| /* MIPS-specific support for 32-bit ELF |
| Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. |
| |
| Most of the information added by Ian Lance Taylor, Cygnus Support, |
| <ian@cygnus.com>. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly |
| different MIPS ELF from other targets. This matters when linking. |
| This file supports both, switching at runtime. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "bfdlink.h" |
| #include "genlink.h" |
| #include "elf-bfd.h" |
| #include "elf/mips.h" |
| |
| /* Get the ECOFF swapping routines. */ |
| #include "coff/sym.h" |
| #include "coff/symconst.h" |
| #include "coff/internal.h" |
| #include "coff/ecoff.h" |
| #include "coff/mips.h" |
| #define ECOFF_32 |
| #include "ecoffswap.h" |
| |
| static bfd_reloc_status_type mips32_64bit_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup |
| PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| static void mips_info_to_howto_rel |
| PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); |
| static void bfd_mips_elf32_swap_gptab_in |
| PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); |
| static void bfd_mips_elf32_swap_gptab_out |
| PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); |
| static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); |
| static boolean mips_elf32_object_p PARAMS ((bfd *)); |
| static boolean mips_elf_create_procedure_table |
| PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *, |
| struct ecoff_debug_info *)); |
| static int mips_elf_additional_program_headers PARAMS ((bfd *)); |
| static boolean mips_elf_modify_segment_map PARAMS ((bfd *)); |
| static INLINE int elf_mips_isa PARAMS ((flagword)); |
| static INLINE int elf_mips_mach PARAMS ((flagword)); |
| static INLINE char* elf_mips_abi_name PARAMS ((flagword)); |
| static boolean mips_elf32_section_from_shdr |
| PARAMS ((bfd *, Elf32_Internal_Shdr *, char *)); |
| static boolean mips_elf32_section_processing |
| PARAMS ((bfd *, Elf32_Internal_Shdr *)); |
| static boolean mips_elf_is_local_label_name |
| PARAMS ((bfd *, const char *)); |
| static struct bfd_hash_entry *mips_elf_link_hash_newfunc |
| PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| static struct bfd_link_hash_table *mips_elf_link_hash_table_create |
| PARAMS ((bfd *)); |
| static int gptab_compare PARAMS ((const void *, const void *)); |
| static boolean mips_elf_final_link |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static void mips_elf_relocate_hi16 |
| PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, |
| bfd_vma)); |
| static boolean mips_elf_relocate_got_local |
| PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *, |
| Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| static void mips_elf_relocate_global_got |
| PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| static bfd_reloc_status_type mips16_jump_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips16_gprel_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static boolean mips_elf_adjust_dynindx |
| PARAMS ((struct elf_link_hash_entry *, PTR)); |
| static boolean mips_elf_relocate_section |
| PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| static boolean mips_elf_link_output_symbol_hook |
| PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
| asection *)); |
| static boolean mips_elf_create_dynamic_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static boolean mips_elf_create_compact_rel_section |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static boolean mips_elf_create_got_section |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static boolean mips_elf_check_relocs |
| PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| const Elf_Internal_Rela *)); |
| static boolean mips_elf_adjust_dynamic_symbol |
| PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| static boolean mips_elf_always_size_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static boolean mips_elf_size_dynamic_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static boolean mips_elf_finish_dynamic_symbol |
| PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| Elf_Internal_Sym *)); |
| static boolean mips_elf_finish_dynamic_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static boolean mips_elf_add_symbol_hook |
| PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| const char **, flagword *, asection **, bfd_vma *)); |
| static bfd_reloc_status_type mips_elf_final_gp |
| PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); |
| static bfd_byte *elf32_mips_get_relocated_section_contents |
| PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, |
| bfd_byte *, boolean, asymbol **)); |
| |
| /* This is true for Irix 5 executables, false for normal MIPS ELF ABI |
| executables. FIXME: At the moment, we default to always generating |
| Irix 5 executables. */ |
| |
| #define SGI_COMPAT(abfd) (1) |
| |
| /* This structure is used to hold .got information when linking. It |
| is stored in the tdata field of the bfd_elf_section_data structure. */ |
| |
| struct mips_got_info |
| { |
| /* The symbol index of the first global .got symbol. */ |
| unsigned long global_gotsym; |
| /* The number of local .got entries. */ |
| unsigned int local_gotno; |
| /* The number of local .got entries we have used. */ |
| unsigned int assigned_gotno; |
| }; |
| |
| /* The number of local .got entries we reserve. */ |
| #define MIPS_RESERVED_GOTNO (2) |
| |
| /* Instructions which appear in a stub. For some reason the stub is |
| slightly different on an SGI system. */ |
| #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000) |
| #define STUB_LW(abfd) \ |
| (SGI_COMPAT (abfd) \ |
| ? 0x8f998010 /* lw t9,0x8010(gp) */ \ |
| : 0x8f998000) /* lw t9,0x8000(gp) */ |
| #define STUB_MOVE 0x03e07825 /* move t7,ra */ |
| #define STUB_JALR 0x0320f809 /* jal t9 */ |
| #define STUB_LI16 0x34180000 /* ori t8,zero,0 */ |
| #define MIPS_FUNCTION_STUB_SIZE (16) |
| |
| #if 0 |
| /* We no longer try to identify particular sections for the .dynsym |
| section. When we do, we wind up crashing if there are other random |
| sections with relocations. */ |
| |
| /* Names of sections which appear in the .dynsym section in an Irix 5 |
| executable. */ |
| |
| static const char * const mips_elf_dynsym_sec_names[] = |
| { |
| ".text", |
| ".init", |
| ".fini", |
| ".data", |
| ".rodata", |
| ".sdata", |
| ".sbss", |
| ".bss", |
| NULL |
| }; |
| |
| #define SIZEOF_MIPS_DYNSYM_SECNAMES \ |
| (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) |
| |
| /* The number of entries in mips_elf_dynsym_sec_names which go in the |
| text segment. */ |
| |
| #define MIPS_TEXT_DYNSYM_SECNO (3) |
| |
| #endif /* 0 */ |
| |
| /* The names of the runtime procedure table symbols used on Irix 5. */ |
| |
| static const char * const mips_elf_dynsym_rtproc_names[] = |
| { |
| "_procedure_table", |
| "_procedure_string_table", |
| "_procedure_table_size", |
| NULL |
| }; |
| |
| /* These structures are used to generate the .compact_rel section on |
| Irix 5. */ |
| |
| typedef struct |
| { |
| unsigned long id1; /* Always one? */ |
| unsigned long num; /* Number of compact relocation entries. */ |
| unsigned long id2; /* Always two? */ |
| unsigned long offset; /* The file offset of the first relocation. */ |
| unsigned long reserved0; /* Zero? */ |
| unsigned long reserved1; /* Zero? */ |
| } Elf32_compact_rel; |
| |
| typedef struct |
| { |
| bfd_byte id1[4]; |
| bfd_byte num[4]; |
| bfd_byte id2[4]; |
| bfd_byte offset[4]; |
| bfd_byte reserved0[4]; |
| bfd_byte reserved1[4]; |
| } Elf32_External_compact_rel; |
| |
| typedef struct |
| { |
| unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
| unsigned int rtype : 4; /* Relocation types. See below. */ |
| unsigned int dist2to : 8; |
| unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ |
| unsigned long konst; /* KONST field. See below. */ |
| unsigned long vaddr; /* VADDR to be relocated. */ |
| } Elf32_crinfo; |
| |
| typedef struct |
| { |
| unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
| unsigned int rtype : 4; /* Relocation types. See below. */ |
| unsigned int dist2to : 8; |
| unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ |
| unsigned long konst; /* KONST field. See below. */ |
| } Elf32_crinfo2; |
| |
| typedef struct |
| { |
| bfd_byte info[4]; |
| bfd_byte konst[4]; |
| bfd_byte vaddr[4]; |
| } Elf32_External_crinfo; |
| |
| typedef struct |
| { |
| bfd_byte info[4]; |
| bfd_byte konst[4]; |
| } Elf32_External_crinfo2; |
| |
| /* These are the constants used to swap the bitfields in a crinfo. */ |
| |
| #define CRINFO_CTYPE (0x1) |
| #define CRINFO_CTYPE_SH (31) |
| #define CRINFO_RTYPE (0xf) |
| #define CRINFO_RTYPE_SH (27) |
| #define CRINFO_DIST2TO (0xff) |
| #define CRINFO_DIST2TO_SH (19) |
| #define CRINFO_RELVADDR (0x7ffff) |
| #define CRINFO_RELVADDR_SH (0) |
| |
| /* A compact relocation info has long (3 words) or short (2 words) |
| formats. A short format doesn't have VADDR field and relvaddr |
| fields contains ((VADDR - vaddr of the previous entry) >> 2). */ |
| #define CRF_MIPS_LONG 1 |
| #define CRF_MIPS_SHORT 0 |
| |
| /* There are 4 types of compact relocation at least. The value KONST |
| has different meaning for each type: |
| |
| (type) (konst) |
| CT_MIPS_REL32 Address in data |
| CT_MIPS_WORD Address in word (XXX) |
| CT_MIPS_GPHI_LO GP - vaddr |
| CT_MIPS_JMPAD Address to jump |
| */ |
| |
| #define CRT_MIPS_REL32 0xa |
| #define CRT_MIPS_WORD 0xb |
| #define CRT_MIPS_GPHI_LO 0xc |
| #define CRT_MIPS_JMPAD 0xd |
| |
| #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) |
| #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) |
| #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) |
| #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) |
| |
| static void bfd_elf32_swap_compact_rel_out |
| PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *)); |
| static void bfd_elf32_swap_crinfo_out |
| PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *)); |
| |
| #define USE_REL 1 /* MIPS uses REL relocations instead of RELA */ |
| |
| static reloc_howto_type elf_mips_howto_table[] = |
| { |
| /* No relocation. */ |
| HOWTO (R_MIPS_NONE, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_NONE", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 16 bit relocation. */ |
| HOWTO (R_MIPS_16, /* type */ |
| 0, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_16", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 32 bit relocation. */ |
| HOWTO (R_MIPS_32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_32", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 32 bit symbol relative relocation. */ |
| HOWTO (R_MIPS_REL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_REL32", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 26 bit branch address. */ |
| HOWTO (R_MIPS_26, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| /* This needs complex overflow |
| detection, because the upper four |
| bits must match the PC. */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_26", /* name */ |
| true, /* partial_inplace */ |
| 0x3ffffff, /* src_mask */ |
| 0x3ffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* High 16 bits of symbol value. */ |
| HOWTO (R_MIPS_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| _bfd_mips_elf_hi16_reloc, /* special_function */ |
| "R_MIPS_HI16", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Low 16 bits of symbol value. */ |
| HOWTO (R_MIPS_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| _bfd_mips_elf_lo16_reloc, /* special_function */ |
| "R_MIPS_LO16", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* GP relative reference. */ |
| HOWTO (R_MIPS_GPREL16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| _bfd_mips_elf_gprel16_reloc, /* special_function */ |
| "R_MIPS_GPREL16", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Reference to literal section. */ |
| HOWTO (R_MIPS_LITERAL, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| _bfd_mips_elf_gprel16_reloc, /* special_function */ |
| "R_MIPS_LITERAL", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Reference to global offset table. */ |
| HOWTO (R_MIPS_GOT16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| _bfd_mips_elf_got16_reloc, /* special_function */ |
| "R_MIPS_GOT16", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 16 bit PC relative reference. */ |
| HOWTO (R_MIPS_PC16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_PC16", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 16 bit call through global offset table. */ |
| /* FIXME: This is not handled correctly. */ |
| HOWTO (R_MIPS_CALL16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL16", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 32 bit GP relative reference. */ |
| HOWTO (R_MIPS_GPREL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| _bfd_mips_elf_gprel32_reloc, /* special_function */ |
| "R_MIPS_GPREL32", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* The remaining relocs are defined on Irix 5, although they are |
| not defined by the ABI. */ |
| { 13 }, |
| { 14 }, |
| { 15 }, |
| |
| /* A 5 bit shift field. */ |
| HOWTO (R_MIPS_SHIFT5, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 5, /* bitsize */ |
| false, /* pc_relative */ |
| 6, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SHIFT5", /* name */ |
| true, /* partial_inplace */ |
| 0x000007c0, /* src_mask */ |
| 0x000007c0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 6 bit shift field. */ |
| /* FIXME: This is not handled correctly; a special function is |
| needed to put the most significant bit in the right place. */ |
| HOWTO (R_MIPS_SHIFT6, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 6, /* bitsize */ |
| false, /* pc_relative */ |
| 6, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SHIFT6", /* name */ |
| true, /* partial_inplace */ |
| 0x000007c4, /* src_mask */ |
| 0x000007c4, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 64 bit relocation. This is used in 32 bit ELF when addresses |
| are 64 bits long; the upper 32 bits are simply a sign extension. |
| The fields of the howto should be the same as for R_MIPS_32, |
| other than the type, name, and special_function. */ |
| HOWTO (R_MIPS_64, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| mips32_64bit_reloc, /* special_function */ |
| "R_MIPS_64", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Displacement in the global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_GOT_DISP, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_DISP", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Displacement to page pointer in the global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_GOT_PAGE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_PAGE", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Offset from page pointer in the global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_GOT_OFST, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_OFST", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* High 16 bits of displacement in global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_GOT_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_HI16", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Low 16 bits of displacement in global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_GOT_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_LO16", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* 64 bit subtraction. Presumably not used in 32 bit ELF. */ |
| { R_MIPS_SUB }, |
| |
| /* Used to cause the linker to insert and delete instructions? */ |
| { R_MIPS_INSERT_A }, |
| { R_MIPS_INSERT_B }, |
| { R_MIPS_DELETE }, |
| |
| /* Get the higher values of a 64 bit addend. Presumably not used in |
| 32 bit ELF. */ |
| { R_MIPS_HIGHER }, |
| { R_MIPS_HIGHEST }, |
| |
| /* High 16 bits of displacement in global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_CALL_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL_HI16", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Low 16 bits of displacement in global offset table. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_CALL_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL_LO16", /* name */ |
| true, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| { R_MIPS_SCN_DISP }, |
| { R_MIPS_REL16 }, |
| { R_MIPS_ADD_IMMEDIATE }, |
| { R_MIPS_PJUMP }, |
| { R_MIPS_RELGOT } |
| }; |
| |
| /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This |
| is a hack to make the linker think that we need 64 bit values. */ |
| static reloc_howto_type elf_mips_ctor64_howto = |
| HOWTO (R_MIPS_64, /* type */ |
| 0, /* rightshift */ |
| 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips32_64bit_reloc, /* special_function */ |
| "R_MIPS_64", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false); /* pcrel_offset */ |
| |
| /* The reloc used for the mips16 jump instruction. */ |
| static reloc_howto_type elf_mips16_jump_howto = |
| HOWTO (R_MIPS16_26, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| /* This needs complex overflow |
| detection, because the upper four |
| bits must match the PC. */ |
| mips16_jump_reloc, /* special_function */ |
| "R_MIPS16_26", /* name */ |
| true, /* partial_inplace */ |
| 0x3ffffff, /* src_mask */ |
| 0x3ffffff, /* dst_mask */ |
| false); /* pcrel_offset */ |
| |
| /* The reloc used for the mips16 gprel instruction. The src_mask and |
| dsk_mask for this howto do not reflect the actual instruction, in |
| which the value is not contiguous; the masks are for the |
| convenience of the relocate_section routine. */ |
| static reloc_howto_type elf_mips16_gprel_howto = |
| HOWTO (R_MIPS16_GPREL, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips16_gprel_reloc, /* special_function */ |
| "R_MIPS16_GPREL", /* name */ |
| true, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false); /* pcrel_offset */ |
| |
| |
| /* GNU extension to record C++ vtable hierarchy */ |
| static reloc_howto_type elf_mips_gnu_vtinherit_howto = |
| HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| NULL, /* special_function */ |
| "R_MIPS_GNU_VTINHERIT", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false); /* pcrel_offset */ |
| |
| /* GNU extension to record C++ vtable member usage */ |
| static reloc_howto_type elf_mips_gnu_vtentry_howto = |
| HOWTO (R_MIPS_GNU_VTENTRY, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| "R_MIPS_GNU_VTENTRY", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false); /* pcrel_offset */ |
| |
| /* Do a R_MIPS_HI16 relocation. This has to be done in combination |
| with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to |
| the HI16. Here we just save the information we need; we do the |
| actual relocation when we see the LO16. MIPS ELF requires that the |
| LO16 immediately follow the HI16. As a GNU extension, we permit an |
| arbitrary number of HI16 relocs to be associated with a single LO16 |
| reloc. This extension permits gcc to output the HI and LO relocs |
| itself. */ |
| |
| struct mips_hi16 |
| { |
| struct mips_hi16 *next; |
| bfd_byte *addr; |
| bfd_vma addend; |
| }; |
| |
| /* FIXME: This should not be a static variable. */ |
| |
| static struct mips_hi16 *mips_hi16_list; |
| |
| bfd_reloc_status_type |
| _bfd_mips_elf_hi16_reloc (abfd, |
| reloc_entry, |
| symbol, |
| data, |
| input_section, |
| output_bfd, |
| error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| bfd_reloc_status_type ret; |
| bfd_vma relocation; |
| struct mips_hi16 *n; |
| |
| /* If we're relocating, and this an external symbol, we don't want |
| to change anything. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| ret = bfd_reloc_ok; |
| |
| if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
| { |
| boolean relocateable; |
| bfd_vma gp; |
| |
| if (ret == bfd_reloc_undefined) |
| abort (); |
| |
| if (output_bfd != NULL) |
| relocateable = true; |
| else |
| { |
| relocateable = false; |
| output_bfd = symbol->section->output_section->owner; |
| } |
| |
| ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
| error_message, &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| relocation = gp - reloc_entry->address; |
| } |
| else |
| { |
| if (bfd_is_und_section (symbol->section) |
| && output_bfd == (bfd *) NULL) |
| ret = bfd_reloc_undefined; |
| |
| if (bfd_is_com_section (symbol->section)) |
| relocation = 0; |
| else |
| relocation = symbol->value; |
| } |
| |
| relocation += symbol->section->output_section->vma; |
| relocation += symbol->section->output_offset; |
| relocation += reloc_entry->addend; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| /* Save the information, and let LO16 do the actual relocation. */ |
| n = (struct mips_hi16 *) bfd_malloc (sizeof *n); |
| if (n == NULL) |
| return bfd_reloc_outofrange; |
| n->addr = (bfd_byte *) data + reloc_entry->address; |
| n->addend = relocation; |
| n->next = mips_hi16_list; |
| mips_hi16_list = n; |
| |
| if (output_bfd != (bfd *) NULL) |
| reloc_entry->address += input_section->output_offset; |
| |
| return ret; |
| } |
| |
| /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit |
| inplace relocation; this function exists in order to do the |
| R_MIPS_HI16 relocation described above. */ |
| |
| bfd_reloc_status_type |
| _bfd_mips_elf_lo16_reloc (abfd, |
| reloc_entry, |
| symbol, |
| data, |
| input_section, |
| output_bfd, |
| error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| arelent gp_disp_relent; |
| |
| if (mips_hi16_list != NULL) |
| { |
| struct mips_hi16 *l; |
| |
| l = mips_hi16_list; |
| while (l != NULL) |
| { |
| unsigned long insn; |
| unsigned long val; |
| unsigned long vallo; |
| struct mips_hi16 *next; |
| |
| /* Do the HI16 relocation. Note that we actually don't need |
| to know anything about the LO16 itself, except where to |
| find the low 16 bits of the addend needed by the LO16. */ |
| insn = bfd_get_32 (abfd, l->addr); |
| vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address) |
| & 0xffff); |
| val = ((insn & 0xffff) << 16) + vallo; |
| val += l->addend; |
| |
| /* The low order 16 bits are always treated as a signed |
| value. Therefore, a negative value in the low order bits |
| requires an adjustment in the high order bits. We need |
| to make this adjustment in two ways: once for the bits we |
| took from the data, and once for the bits we are putting |
| back in to the data. */ |
| if ((vallo & 0x8000) != 0) |
| val -= 0x10000; |
| if ((val & 0x8000) != 0) |
| val += 0x10000; |
| |
| insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff); |
| bfd_put_32 (abfd, insn, l->addr); |
| |
| if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
| { |
| gp_disp_relent = *reloc_entry; |
| reloc_entry = &gp_disp_relent; |
| reloc_entry->addend = l->addend; |
| } |
| |
| next = l->next; |
| free (l); |
| l = next; |
| } |
| |
| mips_hi16_list = NULL; |
| } |
| else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
| { |
| bfd_reloc_status_type ret; |
| bfd_vma gp, relocation; |
| |
| /* FIXME: Does this case ever occur? */ |
| |
| ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| relocation = gp - reloc_entry->address; |
| relocation += symbol->section->output_section->vma; |
| relocation += symbol->section->output_offset; |
| relocation += reloc_entry->addend; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| gp_disp_relent = *reloc_entry; |
| reloc_entry = &gp_disp_relent; |
| reloc_entry->addend = relocation - 4; |
| } |
| |
| /* Now do the LO16 reloc in the usual way. */ |
| return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message); |
| } |
| |
| /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
| table used for PIC code. If the symbol is an external symbol, the |
| instruction is modified to contain the offset of the appropriate |
| entry in the global offset table. If the symbol is a section |
| symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit |
| addends are combined to form the real addend against the section |
| symbol; the GOT16 is modified to contain the offset of an entry in |
| the global offset table, and the LO16 is modified to offset it |
| appropriately. Thus an offset larger than 16 bits requires a |
| modified value in the global offset table. |
| |
| This implementation suffices for the assembler, but the linker does |
| not yet know how to create global offset tables. */ |
| |
| bfd_reloc_status_type |
| _bfd_mips_elf_got16_reloc (abfd, |
| reloc_entry, |
| symbol, |
| data, |
| input_section, |
| output_bfd, |
| error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| /* If we're relocating, and this an external symbol, we don't want |
| to change anything. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| /* If we're relocating, and this is a local symbol, we can handle it |
| just like HI16. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) != 0) |
| return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message); |
| |
| abort (); |
| } |
| |
| /* We have to figure out the gp value, so that we can adjust the |
| symbol value correctly. We look up the symbol _gp in the output |
| BFD. If we can't find it, we're stuck. We cache it in the ELF |
| target data. We don't need to adjust the symbol value for an |
| external symbol if we are producing relocateable output. */ |
| |
| static bfd_reloc_status_type |
| mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) |
| bfd *output_bfd; |
| asymbol *symbol; |
| boolean relocateable; |
| char **error_message; |
| bfd_vma *pgp; |
| { |
| if (bfd_is_und_section (symbol->section) |
| && ! relocateable) |
| { |
| *pgp = 0; |
| return bfd_reloc_undefined; |
| } |
| |
| *pgp = _bfd_get_gp_value (output_bfd); |
| if (*pgp == 0 |
| && (! relocateable |
| || (symbol->flags & BSF_SECTION_SYM) != 0)) |
| { |
| if (relocateable) |
| { |
| /* Make up a value. */ |
| *pgp = symbol->section->output_section->vma + 0x4000; |
| _bfd_set_gp_value (output_bfd, *pgp); |
| } |
| else |
| { |
| unsigned int count; |
| asymbol **sym; |
| unsigned int i; |
| |
| count = bfd_get_symcount (output_bfd); |
| sym = bfd_get_outsymbols (output_bfd); |
| |
| if (sym == (asymbol **) NULL) |
| i = count; |
| else |
| { |
| for (i = 0; i < count; i++, sym++) |
| { |
| register CONST char *name; |
| |
| name = bfd_asymbol_name (*sym); |
| if (*name == '_' && strcmp (name, "_gp") == 0) |
| { |
| *pgp = bfd_asymbol_value (*sym); |
| _bfd_set_gp_value (output_bfd, *pgp); |
| break; |
| } |
| } |
| } |
| |
| if (i >= count) |
| { |
| /* Only get the error once. */ |
| *pgp = 4; |
| _bfd_set_gp_value (output_bfd, *pgp); |
| *error_message = |
| (char *) _("GP relative relocation when _gp not defined"); |
| return bfd_reloc_dangerous; |
| } |
| } |
| } |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
| become the offset from the gp register. This function also handles |
| R_MIPS_LITERAL relocations, although those can be handled more |
| cleverly because the entries in the .lit8 and .lit4 sections can be |
| merged. */ |
| |
| static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *, |
| arelent *, asection *, |
| boolean, PTR, bfd_vma)); |
| |
| bfd_reloc_status_type |
| _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| |
| /* If we're relocating, and this is an external symbol with no |
| addend, we don't want to change anything. We will only have an |
| addend if this is a newly created reloc, not read from an ELF |
| file. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (output_bfd != (bfd *) NULL) |
| relocateable = true; |
| else |
| { |
| relocateable = false; |
| output_bfd = symbol->section->output_section->owner; |
| } |
| |
| ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
| &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, |
| relocateable, data, gp); |
| } |
| |
| static bfd_reloc_status_type |
| gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, |
| gp) |
| bfd *abfd; |
| asymbol *symbol; |
| arelent *reloc_entry; |
| asection *input_section; |
| boolean relocateable; |
| PTR data; |
| bfd_vma gp; |
| { |
| bfd_vma relocation; |
| unsigned long insn; |
| unsigned long val; |
| |
| if (bfd_is_com_section (symbol->section)) |
| relocation = 0; |
| else |
| relocation = symbol->value; |
| |
| relocation += symbol->section->output_section->vma; |
| relocation += symbol->section->output_offset; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| |
| /* Set val to the offset into the section or symbol. */ |
| if (reloc_entry->howto->src_mask == 0) |
| { |
| /* This case occurs with the 64-bit MIPS ELF ABI. */ |
| val = reloc_entry->addend; |
| } |
| else |
| { |
| val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; |
| if (val & 0x8000) |
| val -= 0x10000; |
| } |
| |
| /* Adjust val for the final section location and GP value. If we |
| are producing relocateable output, we don't want to do this for |
| an external symbol. */ |
| if (! relocateable |
| || (symbol->flags & BSF_SECTION_SYM) != 0) |
| val += relocation - gp; |
| |
| insn = (insn &~ 0xffff) | (val & 0xffff); |
| bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| |
| if (relocateable) |
| reloc_entry->address += input_section->output_offset; |
| |
| /* Make sure it fit in 16 bits. */ |
| if (val >= 0x8000 && val < 0xffff8000) |
| return bfd_reloc_overflow; |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset |
| from the gp register? XXX */ |
| |
| static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, |
| arelent *, asection *, |
| boolean, PTR, bfd_vma)); |
| |
| bfd_reloc_status_type |
| _bfd_mips_elf_gprel32_reloc (abfd, |
| reloc_entry, |
| symbol, |
| data, |
| input_section, |
| output_bfd, |
| error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| |
| /* If we're relocating, and this is an external symbol with no |
| addend, we don't want to change anything. We will only have an |
| addend if this is a newly created reloc, not read from an ELF |
| file. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| *error_message = (char *) |
| _("32bits gp relative relocation occurs for an external symbol"); |
| return bfd_reloc_outofrange; |
| } |
| |
| if (output_bfd != (bfd *) NULL) |
| { |
| relocateable = true; |
| gp = _bfd_get_gp_value (output_bfd); |
| } |
| else |
| { |
| relocateable = false; |
| output_bfd = symbol->section->output_section->owner; |
| |
| ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
| error_message, &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| } |
| |
| return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, |
| relocateable, data, gp); |
| } |
| |
| static bfd_reloc_status_type |
| gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, |
| gp) |
| bfd *abfd; |
| asymbol *symbol; |
| arelent *reloc_entry; |
| asection *input_section; |
| boolean relocateable; |
| PTR data; |
| bfd_vma gp; |
| { |
| bfd_vma relocation; |
| unsigned long val; |
| |
| if (bfd_is_com_section (symbol->section)) |
| relocation = 0; |
| else |
| relocation = symbol->value; |
| |
| relocation += symbol->section->output_section->vma; |
| relocation += symbol->section->output_offset; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| if (reloc_entry->howto->src_mask == 0) |
| { |
| /* This case arises with the 64-bit MIPS ELF ABI. */ |
| val = 0; |
| } |
| else |
| val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| |
| /* Set val to the offset into the section or symbol. */ |
| val += reloc_entry->addend; |
| |
| /* Adjust val for the final section location and GP value. If we |
| are producing relocateable output, we don't want to do this for |
| an external symbol. */ |
| if (! relocateable |
| || (symbol->flags & BSF_SECTION_SYM) != 0) |
| val += relocation - gp; |
| |
| bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); |
| |
| if (relocateable) |
| reloc_entry->address += input_section->output_offset; |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are |
| generated when addreses are 64 bits. The upper 32 bits are a simle |
| sign extension. */ |
| |
| static bfd_reloc_status_type |
| mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| bfd_reloc_status_type r; |
| arelent reloc32; |
| unsigned long val; |
| bfd_size_type addr; |
| |
| r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message); |
| if (r != bfd_reloc_continue) |
| return r; |
| |
| /* Do a normal 32 bit relocation on the lower 32 bits. */ |
| reloc32 = *reloc_entry; |
| if (bfd_big_endian (abfd)) |
| reloc32.address += 4; |
| reloc32.howto = &elf_mips_howto_table[R_MIPS_32]; |
| r = bfd_perform_relocation (abfd, &reloc32, data, input_section, |
| output_bfd, error_message); |
| |
| /* Sign extend into the upper 32 bits. */ |
| val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); |
| if ((val & 0x80000000) != 0) |
| val = 0xffffffff; |
| else |
| val = 0; |
| addr = reloc_entry->address; |
| if (bfd_little_endian (abfd)) |
| addr += 4; |
| bfd_put_32 (abfd, val, (bfd_byte *) data + addr); |
| |
| return r; |
| } |
| |
| /* Handle a mips16 jump. */ |
| |
| static bfd_reloc_status_type |
| mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| /* FIXME. */ |
| { |
| static boolean warned; |
| |
| if (! warned) |
| (*_bfd_error_handler) |
| (_("Linking mips16 objects into %s format is not supported"), |
| bfd_get_target (input_section->output_section->owner)); |
| warned = true; |
| } |
| |
| return bfd_reloc_undefined; |
| } |
| |
| /* Handle a mips16 GP relative reloc. */ |
| |
| static bfd_reloc_status_type |
| mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| unsigned short extend, insn; |
| unsigned long final; |
| |
| /* If we're relocating, and this is an external symbol with no |
| addend, we don't want to change anything. We will only have an |
| addend if this is a newly created reloc, not read from an ELF |
| file. */ |
| if (output_bfd != NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (output_bfd != NULL) |
| relocateable = true; |
| else |
| { |
| relocateable = false; |
| output_bfd = symbol->section->output_section->owner; |
| } |
| |
| ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
| &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| /* Pick up the mips16 extend instruction and the real instruction. */ |
| extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); |
| insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); |
| |
| /* Stuff the current addend back as a 32 bit value, do the usual |
| relocation, and then clean up. */ |
| bfd_put_32 (abfd, |
| (((extend & 0x1f) << 11) |
| | (extend & 0x7e0) |
| | (insn & 0x1f)), |
| (bfd_byte *) data + reloc_entry->address); |
| |
| ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section, |
| relocateable, data, gp); |
| |
| final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| bfd_put_16 (abfd, |
| ((extend & 0xf800) |
| | ((final >> 11) & 0x1f) |
| | (final & 0x7e0)), |
| (bfd_byte *) data + reloc_entry->address); |
| bfd_put_16 (abfd, |
| ((insn & 0xffe0) |
| | (final & 0x1f)), |
| (bfd_byte *) data + reloc_entry->address + 2); |
| |
| return ret; |
| } |
| |
| /* Return the ISA for a MIPS e_flags value. */ |
| |
| static INLINE int |
| elf_mips_isa (flags) |
| flagword flags; |
| { |
| switch (flags & EF_MIPS_ARCH) |
| { |
| case E_MIPS_ARCH_1: |
| return 1; |
| case E_MIPS_ARCH_2: |
| return 2; |
| case E_MIPS_ARCH_3: |
| return 3; |
| case E_MIPS_ARCH_4: |
| return 4; |
| } |
| return 4; |
| } |
| |
| /* Return the MACH for a MIPS e_flags value. */ |
| |
| static INLINE int |
| elf_mips_mach (flags) |
| flagword flags; |
| { |
| switch (flags & EF_MIPS_MACH) |
| { |
| case E_MIPS_MACH_3900: |
| return bfd_mach_mips3900; |
| |
| case E_MIPS_MACH_4010: |
| return bfd_mach_mips4010; |
| |
| case E_MIPS_MACH_4100: |
| return bfd_mach_mips4100; |
| |
| case E_MIPS_MACH_4111: |
| return bfd_mach_mips4111; |
| |
| case E_MIPS_MACH_4650: |
| return bfd_mach_mips4650; |
| |
| default: |
| switch (flags & EF_MIPS_ARCH) |
| { |
| default: |
| case E_MIPS_ARCH_1: |
| return bfd_mach_mips3000; |
| break; |
| |
| case E_MIPS_ARCH_2: |
| return bfd_mach_mips6000; |
| break; |
| |
| case E_MIPS_ARCH_3: |
| return bfd_mach_mips4000; |
| break; |
| |
| case E_MIPS_ARCH_4: |
| return bfd_mach_mips8000; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* Return printable name for ABI from flagword. */ |
| |
| static INLINE char* |
| elf_mips_abi_name (flags) |
| flagword flags; |
| { |
| switch (flags & EF_MIPS_ABI) |
| { |
| case 0: |
| return "none"; |
| case E_MIPS_ABI_O32: |
| return "O32"; |
| case E_MIPS_ABI_O64: |
| return "O64"; |
| case E_MIPS_ABI_EABI32: |
| return "EABI32"; |
| case E_MIPS_ABI_EABI64: |
| return "EABI64"; |
| default: |
| return "unknown abi"; |
| } |
| } |
| |
| /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
| |
| struct elf_reloc_map { |
| bfd_reloc_code_real_type bfd_reloc_val; |
| enum elf_mips_reloc_type elf_reloc_val; |
| }; |
| |
| static CONST struct elf_reloc_map mips_reloc_map[] = |
| { |
| { BFD_RELOC_NONE, R_MIPS_NONE, }, |
| { BFD_RELOC_16, R_MIPS_16 }, |
| { BFD_RELOC_32, R_MIPS_32 }, |
| { BFD_RELOC_64, R_MIPS_64 }, |
| { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, |
| { BFD_RELOC_HI16_S, R_MIPS_HI16 }, |
| { BFD_RELOC_LO16, R_MIPS_LO16 }, |
| { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 }, |
| { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, |
| { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, |
| { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, |
| { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, |
| { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }, |
| { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, |
| { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, |
| { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, |
| { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 } |
| }; |
| |
| /* Given a BFD reloc type, return a howto structure. */ |
| |
| static reloc_howto_type * |
| bfd_elf32_bfd_reloc_type_lookup (abfd, code) |
| bfd *abfd; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int i; |
| |
| for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) |
| { |
| if (mips_reloc_map[i].bfd_reloc_val == code) |
| return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val]; |
| } |
| |
| switch (code) |
| { |
| default: |
| bfd_set_error (bfd_error_bad_value); |
| return NULL; |
| |
| case BFD_RELOC_CTOR: |
| /* We need to handle BFD_RELOC_CTOR specially. |
| Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the |
| size of addresses on this architecture. */ |
| if (bfd_arch_bits_per_address (abfd) == 32) |
| return &elf_mips_howto_table[(int) R_MIPS_32]; |
| else |
| return &elf_mips_ctor64_howto; |
| |
| case BFD_RELOC_MIPS16_JMP: |
| return &elf_mips16_jump_howto; |
| case BFD_RELOC_MIPS16_GPREL: |
| return &elf_mips16_gprel_howto; |
| case BFD_RELOC_VTABLE_INHERIT: |
| return &elf_mips_gnu_vtinherit_howto; |
| case BFD_RELOC_VTABLE_ENTRY: |
| return &elf_mips_gnu_vtentry_howto; |
| } |
| } |
| |
| /* Given a MIPS reloc type, fill in an arelent structure. */ |
| |
| static void |
| mips_info_to_howto_rel (abfd, cache_ptr, dst) |
| bfd *abfd; |
| arelent *cache_ptr; |
| Elf32_Internal_Rel *dst; |
| { |
| unsigned int r_type; |
| |
| r_type = ELF32_R_TYPE (dst->r_info); |
| switch (r_type) |
| { |
| case R_MIPS16_26: |
| cache_ptr->howto = &elf_mips16_jump_howto; |
| break; |
| case R_MIPS16_GPREL: |
| cache_ptr->howto = &elf_mips16_gprel_howto; |
| break; |
| case R_MIPS_GNU_VTINHERIT: |
| cache_ptr->howto = &elf_mips_gnu_vtinherit_howto; |
| break; |
| case R_MIPS_GNU_VTENTRY: |
| cache_ptr->howto = &elf_mips_gnu_vtentry_howto; |
| break; |
| |
| default: |
| BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); |
| cache_ptr->howto = &elf_mips_howto_table[r_type]; |
| break; |
| } |
| |
| /* The addend for a GPREL16 or LITERAL relocation comes from the GP |
| value for the object file. We get the addend now, rather than |
| when we do the relocation, because the symbol manipulations done |
| by the linker may cause us to lose track of the input BFD. */ |
| if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 |
| && (r_type == (unsigned int) R_MIPS_GPREL16 |
| || r_type == (unsigned int) R_MIPS_LITERAL)) |
| cache_ptr->addend = elf_gp (abfd); |
| } |
| |
| /* A .reginfo section holds a single Elf32_RegInfo structure. These |
| routines swap this structure in and out. They are used outside of |
| BFD, so they are globally visible. */ |
| |
| void |
| bfd_mips_elf32_swap_reginfo_in (abfd, ex, in) |
| bfd *abfd; |
| const Elf32_External_RegInfo *ex; |
| Elf32_RegInfo *in; |
| { |
| in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); |
| in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); |
| in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); |
| in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); |
| in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); |
| in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value); |
| } |
| |
| void |
| bfd_mips_elf32_swap_reginfo_out (abfd, in, ex) |
| bfd *abfd; |
| const Elf32_RegInfo *in; |
| Elf32_External_RegInfo *ex; |
| { |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, |
| (bfd_byte *) ex->ri_gprmask); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], |
| (bfd_byte *) ex->ri_cprmask[0]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], |
| (bfd_byte *) ex->ri_cprmask[1]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], |
| (bfd_byte *) ex->ri_cprmask[2]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], |
| (bfd_byte *) ex->ri_cprmask[3]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value, |
| (bfd_byte *) ex->ri_gp_value); |
| } |
| |
| /* In the 64 bit ABI, the .MIPS.options section holds register |
| information in an Elf64_Reginfo structure. These routines swap |
| them in and out. They are globally visible because they are used |
| outside of BFD. These routines are here so that gas can call them |
| without worrying about whether the 64 bit ABI has been included. */ |
| |
| void |
| bfd_mips_elf64_swap_reginfo_in (abfd, ex, in) |
| bfd *abfd; |
| const Elf64_External_RegInfo *ex; |
| Elf64_Internal_RegInfo *in; |
| { |
| in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); |
| in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad); |
| in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); |
| in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); |
| in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); |
| in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); |
| in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value); |
| } |
| |
| void |
| bfd_mips_elf64_swap_reginfo_out (abfd, in, ex) |
| bfd *abfd; |
| const Elf64_Internal_RegInfo *in; |
| Elf64_External_RegInfo *ex; |
| { |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, |
| (bfd_byte *) ex->ri_gprmask); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad, |
| (bfd_byte *) ex->ri_pad); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], |
| (bfd_byte *) ex->ri_cprmask[0]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], |
| (bfd_byte *) ex->ri_cprmask[1]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], |
| (bfd_byte *) ex->ri_cprmask[2]); |
| bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], |
| (bfd_byte *) ex->ri_cprmask[3]); |
| bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value, |
| (bfd_byte *) ex->ri_gp_value); |
| } |
| |
| /* Swap an entry in a .gptab section. Note that these routines rely |
| on the equivalence of the two elements of the union. */ |
| |
| static void |
| bfd_mips_elf32_swap_gptab_in (abfd, ex, in) |
| bfd *abfd; |
| const Elf32_External_gptab *ex; |
| Elf32_gptab *in; |
| { |
| in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value); |
| in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes); |
| } |
| |
| static void |
| bfd_mips_elf32_swap_gptab_out (abfd, in, ex) |
| bfd *abfd; |
| const Elf32_gptab *in; |
| Elf32_External_gptab *ex; |
| { |
| bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, |
| ex->gt_entry.gt_g_value); |
| bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, |
| ex->gt_entry.gt_bytes); |
| } |
| |
| static void |
| bfd_elf32_swap_compact_rel_out (abfd, in, ex) |
| bfd *abfd; |
| const Elf32_compact_rel *in; |
| Elf32_External_compact_rel *ex; |
| { |
| bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1); |
| bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num); |
| bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2); |
| bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset); |
| bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0); |
| bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1); |
| } |
| |
| static void |
| bfd_elf32_swap_crinfo_out (abfd, in, ex) |
| bfd *abfd; |
| const Elf32_crinfo *in; |
| Elf32_External_crinfo *ex; |
| { |
| unsigned long l; |
| |
| l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) |
| | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) |
| | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) |
| | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); |
| bfd_h_put_32 (abfd, (bfd_vma) l, ex->info); |
| bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst); |
| bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr); |
| } |
| |
| /* Swap in an options header. */ |
| |
| void |
| bfd_mips_elf_swap_options_in (abfd, ex, in) |
| bfd *abfd; |
| const Elf_External_Options *ex; |
| Elf_Internal_Options *in; |
| { |
| in->kind = bfd_h_get_8 (abfd, ex->kind); |
| in->size = bfd_h_get_8 (abfd, ex->size); |
| in->section = bfd_h_get_16 (abfd, ex->section); |
| in->info = bfd_h_get_32 (abfd, ex->info); |
| } |
| |
| /* Swap out an options header. */ |
| |
| void |
| bfd_mips_elf_swap_options_out (abfd, in, ex) |
| bfd *abfd; |
| const Elf_Internal_Options *in; |
| Elf_External_Options *ex; |
| { |
| bfd_h_put_8 (abfd, in->kind, ex->kind); |
| bfd_h_put_8 (abfd, in->size, ex->size); |
| bfd_h_put_16 (abfd, in->section, ex->section); |
| bfd_h_put_32 (abfd, in->info, ex->info); |
| } |
| |
| /* Determine whether a symbol is global for the purposes of splitting |
| the symbol table into global symbols and local symbols. At least |
| on Irix 5, this split must be between section symbols and all other |
| symbols. On most ELF targets the split is between static symbols |
| and externally visible symbols. */ |
| |
| /*ARGSUSED*/ |
| static boolean |
| mips_elf_sym_is_global (abfd, sym) |
| bfd *abfd; |
| asymbol *sym; |
| { |
| return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false; |
| } |
| |
| /* Set the right machine number for a MIPS ELF file. This is used for |
| both the 32-bit and the 64-bit ABI. */ |
| |
| boolean |
| _bfd_mips_elf_object_p (abfd) |
| bfd *abfd; |
| { |
| bfd_default_set_arch_mach (abfd, bfd_arch_mips, |
| elf_mips_mach (elf_elfheader (abfd)->e_flags)); |
| return true; |
| } |
| |
| /* Set the right machine number for a 32-bit MIPS ELF file. */ |
| |
| static boolean |
| mips_elf32_object_p (abfd) |
| bfd *abfd; |
| { |
| /* Irix 5 is broken. Object file symbol tables are not always |
| sorted correctly such that local symbols precede global symbols, |
| and the sh_info field in the symbol table is not always right. */ |
| elf_bad_symtab (abfd) = true; |
| |
| return _bfd_mips_elf_object_p (abfd); |
| } |
| |
| /* The final processing done just before writing out a MIPS ELF object |
| file. This gets the MIPS architecture right based on the machine |
| number. This is used by both the 32-bit and the 64-bit ABI. */ |
| |
| /*ARGSUSED*/ |
| void |
| _bfd_mips_elf_final_write_processing (abfd, linker) |
| bfd *abfd; |
| boolean linker; |
| { |
| unsigned long val; |
| unsigned int i; |
| Elf_Internal_Shdr **hdrpp; |
| const char *name; |
| asection *sec; |
| |
| switch (bfd_get_mach (abfd)) |
| { |
| default: |
| case bfd_mach_mips3000: |
| val = E_MIPS_ARCH_1; |
| break; |
| |
| case bfd_mach_mips3900: |
| val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; |
| break; |
| |
| case bfd_mach_mips6000: |
| val = E_MIPS_ARCH_2; |
| break; |
| |
| case bfd_mach_mips4000: |
| case bfd_mach_mips4300: |
| val = E_MIPS_ARCH_3; |
| break; |
| |
| case bfd_mach_mips4010: |
| val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; |
| break; |
| |
| case bfd_mach_mips4100: |
| val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; |
| break; |
| |
| case bfd_mach_mips4111: |
| val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; |
| break; |
| |
| case bfd_mach_mips4650: |
| val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; |
| break; |
| |
| case bfd_mach_mips8000: |
| val = E_MIPS_ARCH_4; |
| break; |
| } |
| |
| elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); |
| elf_elfheader (abfd)->e_flags |= val; |
| |
| /* Set the sh_info field for .gptab sections and other appropriate |
| info for each special section. */ |
| for (i = 1, hdrpp = elf_elfsections (abfd) + 1; |
| i < elf_elfheader (abfd)->e_shnum; |
| i++, hdrpp++) |
| { |
| switch ((*hdrpp)->sh_type) |
| { |
| case SHT_MIPS_LIBLIST: |
| sec = bfd_get_section_by_name (abfd, ".dynstr"); |
| if (sec != NULL) |
| (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; |
| break; |
| |
| case SHT_MIPS_GPTAB: |
| BFD_ASSERT ((*hdrpp)->bfd_section != NULL); |
| name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); |
| BFD_ASSERT (name != NULL |
| && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0); |
| sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
| BFD_ASSERT (sec != NULL); |
| (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; |
| break; |
| |
| case SHT_MIPS_CONTENT: |
| BFD_ASSERT ((*hdrpp)->bfd_section != NULL); |
| name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); |
| BFD_ASSERT (name != NULL |
| && strncmp (name, ".MIPS.content", |
| sizeof ".MIPS.content" - 1) == 0); |
| sec = bfd_get_section_by_name (abfd, |
| name + sizeof ".MIPS.content" - 1); |
| BFD_ASSERT (sec != NULL); |
| (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; |
| break; |
| |
| case SHT_MIPS_SYMBOL_LIB: |
| sec = bfd_get_section_by_name (abfd, ".dynsym"); |
| if (sec != NULL) |
| (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; |
| sec = bfd_get_section_by_name (abfd, ".liblist"); |
| if (sec != NULL) |
| (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; |
| break; |
| |
| case SHT_MIPS_EVENTS: |
| BFD_ASSERT ((*hdrpp)->bfd_section != NULL); |
| name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); |
| BFD_ASSERT (name != NULL); |
| if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0) |
| sec = bfd_get_section_by_name (abfd, |
| name + sizeof ".MIPS.events" - 1); |
| else |
| { |
| BFD_ASSERT (strncmp (name, ".MIPS.post_rel", |
| sizeof ".MIPS.post_rel" - 1) == 0); |
| sec = bfd_get_section_by_name (abfd, |
| (name |
| + sizeof ".MIPS.post_rel" - 1)); |
| } |
| BFD_ASSERT (sec != NULL); |
| (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; |
| break; |
| |
| } |
| } |
| } |
| |
| /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ |
| |
| boolean |
| _bfd_mips_elf_set_private_flags (abfd, flags) |
| bfd *abfd; |
| flagword flags; |
| { |
| BFD_ASSERT (!elf_flags_init (abfd) |
| || elf_elfheader (abfd)->e_flags == flags); |
| |
| elf_elfheader (abfd)->e_flags = flags; |
| elf_flags_init (abfd) = true; |
| return true; |
| } |
| |
| /* Copy backend specific data from one object module to another */ |
| |
| boolean |
| _bfd_mips_elf_copy_private_bfd_data (ibfd, obfd) |
| bfd *ibfd; |
| bfd *obfd; |
| { |
| if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| return true; |
| |
| BFD_ASSERT (!elf_flags_init (obfd) |
| || (elf_elfheader (obfd)->e_flags |
| == elf_elfheader (ibfd)->e_flags)); |
| |
| elf_gp (obfd) = elf_gp (ibfd); |
| elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| elf_flags_init (obfd) = true; |
| return true; |
| } |
| |
| /* Merge backend specific data from an object file to the output |
| object file when linking. */ |
| |
| boolean |
| _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd) |
| bfd *ibfd; |
| bfd *obfd; |
| { |
| flagword old_flags; |
| flagword new_flags; |
| boolean ok; |
| |
| /* Check if we have the same endianess */ |
| if (ibfd->xvec->byteorder != obfd->xvec->byteorder |
| && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
| { |
| const char *msg; |
| |
| if (bfd_big_endian (ibfd)) |
| msg = _("%s: compiled for a big endian system and target is little endian"); |
| else |
| msg = _("%s: compiled for a little endian system and target is big endian"); |
| |
| (*_bfd_error_handler) (msg, bfd_get_filename (ibfd)); |
| |
| bfd_set_error (bfd_error_wrong_format); |
| return false; |
| } |
| |
| if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| return true; |
| |
| new_flags = elf_elfheader (ibfd)->e_flags; |
| elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; |
| old_flags = elf_elfheader (obfd)->e_flags; |
| |
| if (! elf_flags_init (obfd)) |
| { |
| elf_flags_init (obfd) = true; |
| elf_elfheader (obfd)->e_flags = new_flags; |
| |
| if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| && bfd_get_arch_info (obfd)->the_default) |
| { |
| if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| bfd_get_mach (ibfd))) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* Check flag compatibility. */ |
| |
| new_flags &= ~EF_MIPS_NOREORDER; |
| old_flags &= ~EF_MIPS_NOREORDER; |
| |
| if (new_flags == old_flags) |
| return true; |
| |
| ok = true; |
| |
| if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC)) |
| { |
| new_flags &= ~EF_MIPS_PIC; |
| old_flags &= ~EF_MIPS_PIC; |
| (*_bfd_error_handler) |
| (_("%s: linking PIC files with non-PIC files"), |
| bfd_get_filename (ibfd)); |
| ok = false; |
| } |
| |
| if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC)) |
| { |
| new_flags &= ~EF_MIPS_CPIC; |
| old_flags &= ~EF_MIPS_CPIC; |
| (*_bfd_error_handler) |
| (_("%s: linking abicalls files with non-abicalls files"), |
| bfd_get_filename (ibfd)); |
| ok = false; |
| } |
| |
| /* Compare the ISA's. */ |
| if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)) |
| != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))) |
| { |
| int new_mach = new_flags & EF_MIPS_MACH; |
| int old_mach = old_flags & EF_MIPS_MACH; |
| int new_isa = elf_mips_isa (new_flags); |
| int old_isa = elf_mips_isa (old_flags); |
| |
| /* If either has no machine specified, just compare the general isa's. |
| Some combinations of machines are ok, if the isa's match. */ |
| if (! new_mach |
| || ! old_mach |
| || new_mach == old_mach |
| ) |
| { |
| /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3 |
| and -mips4 code. They will normally use the same data sizes and |
| calling conventions. */ |
| |
| if ((new_isa == 1 || new_isa == 2) |
| ? (old_isa != 1 && old_isa != 2) |
| : (old_isa == 1 || old_isa == 2)) |
| { |
| (*_bfd_error_handler) |
| (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"), |
| bfd_get_filename (ibfd), new_isa, old_isa); |
| ok = false; |
| } |
| } |
| |
| else |
| { |
| (*_bfd_error_handler) |
| (_("%s: ISA mismatch (%d) with previous modules (%d)"), |
| bfd_get_filename (ibfd), |
| elf_mips_mach (new_flags), |
| elf_mips_mach (old_flags)); |
| ok = false; |
| } |
| |
| new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); |
| old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); |
| } |
| |
| /* Compare ABI's */ |
| if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)) |
| { |
| /* Only error if both are set (to different values). */ |
| if ((new_flags & EF_MIPS_ABI) |
| && (old_flags & EF_MIPS_ABI)) |
| { |
| (*_bfd_error_handler) |
| (_("%s: ABI mismatch: linking %s module with previous %s modules"), |
| bfd_get_filename (ibfd), |
| elf_mips_abi_name (new_flags), |
| elf_mips_abi_name (old_flags)); |
| ok = false; |
| } |
| new_flags &= ~EF_MIPS_ABI; |
| old_flags &= ~EF_MIPS_ABI; |
| } |
| |
| /* Warn about any other mismatches */ |
| if (new_flags != old_flags) |
| { |
| (*_bfd_error_handler) |
| (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
| bfd_get_filename (ibfd), (unsigned long) new_flags, |
| (unsigned long) old_flags); |
| ok = false; |
| } |
| |
| if (! ok) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static boolean |
| _bfd_mips_elf_print_private_bfd_data (abfd, ptr) |
| bfd *abfd; |
| PTR ptr; |
| { |
| FILE *file = (FILE *) ptr; |
| |
| BFD_ASSERT (abfd != NULL && ptr != NULL); |
| |
| /* Print normal ELF private data. */ |
| _bfd_elf_print_private_bfd_data (abfd, ptr); |
| |
| /* xgettext:c-format */ |
| fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
| |
| if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) |
| fprintf (file, _ (" [abi=O32]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) |
| fprintf (file, _ (" [abi=O64]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) |
| fprintf (file, _ (" [abi=EABI32]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) |
| fprintf (file, _ (" [abi=EABI64]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) |
| fprintf (file, _ (" [abi unknown]")); |
| else |
| fprintf (file, _ (" [no abi set]")); |
| |
| if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) |
| fprintf (file, _ (" [mips1]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
| fprintf (file, _ (" [mips2]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
| fprintf (file, _ (" [mips3]")); |
| else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
| fprintf (file, _ (" [mips4]")); |
| else |
| fprintf (file, _ (" [unknown ISA]")); |
| |
| if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
| fprintf (file, _ (" [32bitmode]")); |
| else |
| fprintf (file, _ (" [not 32bitmode]")); |
| |
| fputc ('\n', file); |
| |
| return true; |
| } |
| |
| /* Handle a MIPS specific section when reading an object file. This |
| is called when elfcode.h finds a section with an unknown type. |
| This routine supports both the 32-bit and 64-bit ELF ABI. |
| |
| FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure |
| how to. */ |
| |
| boolean |
| _bfd_mips_elf_section_from_shdr (abfd, hdr, name) |
| bfd *abfd; |
| Elf_Internal_Shdr *hdr; |
| const char *name; |
| { |
| flagword flags = 0; |
| |
| /* There ought to be a place to keep ELF backend specific flags, but |
| at the moment there isn't one. We just keep track of the |
| sections by their name, instead. Fortunately, the ABI gives |
| suggested names for all the MIPS specific sections, so we will |
| probably get away with this. */ |
| switch (hdr->sh_type) |
| { |
| case SHT_MIPS_LIBLIST: |
| if (strcmp (name, ".liblist") != 0) |
| return false; |
| break; |
| case SHT_MIPS_MSYM: |
| if (strcmp (name, ".msym") != 0) |
| return false; |
| break; |
| case SHT_MIPS_CONFLICT: |
| if (strcmp (name, ".conflict") != 0) |
| return false; |
| break; |
| case SHT_MIPS_GPTAB: |
| if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0) |
| return false; |
| break; |
| case SHT_MIPS_UCODE: |
| if (strcmp (name, ".ucode") != 0) |
| return false; |
| break; |
| case SHT_MIPS_DEBUG: |
| if (strcmp (name, ".mdebug") != 0) |
| return false; |
| flags = SEC_DEBUGGING; |
| break; |
| case SHT_MIPS_REGINFO: |
| if (strcmp (name, ".reginfo") != 0 |
| || hdr->sh_size != sizeof (Elf32_External_RegInfo)) |
| return false; |
| flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
| break; |
| case SHT_MIPS_IFACE: |
| if (strcmp (name, ".MIPS.interfaces") != 0) |
| return false; |
| break; |
| case SHT_MIPS_CONTENT: |
| if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0) |
| return false; |
| break; |
| case SHT_MIPS_OPTIONS: |
| if (strcmp (name, ".options") != 0 |
| && strcmp (name, ".MIPS.options") != 0) |
| return false; |
| break; |
| case SHT_MIPS_DWARF: |
| if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0) |
| return false; |
| break; |
| case SHT_MIPS_SYMBOL_LIB: |
| if (strcmp (name, ".MIPS.symlib") != 0) |
| return false; |
| break; |
| case SHT_MIPS_EVENTS: |
| if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0 |
| && strncmp (name, ".MIPS.post_rel", |
| sizeof ".MIPS.post_rel" - 1) != 0) |
| return false; |
| break; |
| default: |
| return false; |
| } |
| |
| if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) |
| return false; |
| |
| if (flags) |
| { |
| if (! bfd_set_section_flags (abfd, hdr->bfd_section, |
| (bfd_get_section_flags (abfd, |
| hdr->bfd_section) |
| | flags))) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* Handle a 32-bit MIPS ELF specific section. */ |
| |
| static boolean |
| mips_elf32_section_from_shdr (abfd, hdr, name) |
| bfd *abfd; |
| Elf_Internal_Shdr *hdr; |
| char *name; |
| { |
| if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name)) |
| return false; |
| |
| /* FIXME: We should record sh_info for a .gptab section. */ |
| |
| /* For a .reginfo section, set the gp value in the tdata information |
| from the contents of this section. We need the gp value while |
| processing relocs, so we just get it now. The .reginfo section |
| is not used in the 64-bit MIPS ELF ABI. */ |
| if (hdr->sh_type == SHT_MIPS_REGINFO) |
| { |
| Elf32_External_RegInfo ext; |
| Elf32_RegInfo s; |
| |
| if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext, |
| (file_ptr) 0, sizeof ext)) |
| return false; |
| bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
| elf_gp (abfd) = s.ri_gp_value; |
| } |
| |
| /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and |
| set the gp value based on what we find. We may see both |
| SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, |
| they should agree. */ |
| if (hdr->sh_type == SHT_MIPS_OPTIONS) |
| { |
| bfd_byte *contents, *l, *lend; |
| |
| contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
| if (contents == NULL) |
| return false; |
| if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
| (file_ptr) 0, hdr->sh_size)) |
| { |
| free (contents); |
| return false; |
| } |
| l = contents; |
| lend = contents + hdr->sh_size; |
| while (l + sizeof (Elf_External_Options) <= lend) |
| { |
| Elf_Internal_Options intopt; |
| |
| bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, |
| &intopt); |
| if (intopt.kind == ODK_REGINFO) |
| { |
| Elf32_RegInfo intreg; |
| |
| bfd_mips_elf32_swap_reginfo_in |
| (abfd, |
| ((Elf32_External_RegInfo *) |
| (l + sizeof (Elf_External_Options))), |
| &intreg); |
| elf_gp (abfd) = intreg.ri_gp_value; |
| } |
| l += intopt.size; |
| } |
| free (contents); |
| } |
| |
| return true; |
| } |
| |
| /* Set the correct type for a MIPS ELF section. We do this by the |
| section name, which is a hack, but ought to work. This routine is |
| used by both the 32-bit and the 64-bit ABI. */ |
| |
| boolean |
| _bfd_mips_elf_fake_sections (abfd, hdr, sec) |
| bfd *abfd; |
| Elf32_Internal_Shdr *hdr; |
| asection *sec; |
| { |
| register const char *name; |
| |
| name = bfd_get_section_name (abfd, sec); |
| |
| if (strcmp (name, ".liblist") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_LIBLIST; |
| hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib); |
| /* The sh_link field is set in final_write_processing. */ |
| } |
| else if (strcmp (name, ".msym") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_MSYM; |
| hdr->sh_entsize = 8; |
| /* FIXME: Set the sh_info field. */ |
| } |
| else if (strcmp (name, ".conflict") == 0) |
| hdr->sh_type = SHT_MIPS_CONFLICT; |
| else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0) |
| { |
| hdr->sh_type = SHT_MIPS_GPTAB; |
| hdr->sh_entsize = sizeof (Elf32_External_gptab); |
| /* The sh_info field is set in final_write_processing. */ |
| } |
| else if (strcmp (name, ".ucode") == 0) |
| hdr->sh_type = SHT_MIPS_UCODE; |
| else if (strcmp (name, ".mdebug") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_DEBUG; |
| /* In a shared object on Irix 5.3, the .mdebug section has an |
| entsize of 0. FIXME: Does this matter? */ |
| if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) |
| hdr->sh_entsize = 0; |
| else |
| hdr->sh_entsize = 1; |
| } |
| else if (strcmp (name, ".reginfo") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_REGINFO; |
| /* In a shared object on Irix 5.3, the .reginfo section has an |
| entsize of 0x18. FIXME: Does this matter? */ |
| if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) |
| hdr->sh_entsize = sizeof (Elf32_External_RegInfo); |
| else |
| hdr->sh_entsize = 1; |
| } |
| else if (SGI_COMPAT (abfd) |
| && (strcmp (name, ".hash") == 0 |
| || strcmp (name, ".dynamic") == 0 |
| || strcmp (name, ".dynstr") == 0)) |
| { |
| hdr->sh_entsize = 0; |
| #if 0 |
| /* This isn't how the Irix 6 linker behaves. */ |
| hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
| #endif |
| } |
| else if (strcmp (name, ".got") == 0 |
| || strcmp (name, ".sdata") == 0 |
| || strcmp (name, ".sbss") == 0 |
| || strcmp (name, ".lit4") == 0 |
| || strcmp (name, ".lit8") == 0) |
| hdr->sh_flags |= SHF_MIPS_GPREL; |
| else if (strcmp (name, ".MIPS.interfaces") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_IFACE; |
| hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
| } |
| else if (strcmp (name, ".MIPS.content") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_CONTENT; |
| /* The sh_info field is set in final_write_processing. */ |
| } |
| else if (strcmp (name, ".options") == 0 |
| || strcmp (name, ".MIPS.options") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_OPTIONS; |
| hdr->sh_entsize = 1; |
| hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
| } |
| else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0) |
| hdr->sh_type = SHT_MIPS_DWARF; |
| else if (strcmp (name, ".MIPS.symlib") == 0) |
| { |
| hdr->sh_type = SHT_MIPS_SYMBOL_LIB; |
| /* The sh_link and sh_info fields are set in |
| final_write_processing. */ |
| } |
| else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0 |
| || strncmp (name, ".MIPS.post_rel", |
| sizeof ".MIPS.post_rel" - 1) == 0) |
| { |
| hdr->sh_type = SHT_MIPS_EVENTS; |
| hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
| /* The sh_link field is set in final_write_processing. */ |
| } |
| |
| return true; |
| } |
| |
| /* Given a BFD section, try to locate the corresponding ELF section |
| index. This is used by both the 32-bit and the 64-bit ABI. |
| Actually, it's not clear to me that the 64-bit ABI supports these, |
| but for non-PIC objects we will certainly want support for at least |
| the .scommon section. */ |
| |
| boolean |
| _bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval) |
| bfd *abfd; |
| Elf32_Internal_Shdr *hdr; |
| asection *sec; |
| int *retval; |
| { |
| if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) |
| { |
| *retval = SHN_MIPS_SCOMMON; |
| return true; |
| } |
| if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) |
| { |
| *retval = SHN_MIPS_ACOMMON; |
| return true; |
| } |
| return false; |
| } |
| |
| /* When are writing out the .options or .MIPS.options section, |
| remember the bytes we are writing out, so that we can install the |
| GP value in the section_processing routine. */ |
| |
| boolean |
| _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count) |
| bfd *abfd; |
| sec_ptr section; |
| PTR location; |
| file_ptr offset; |
| bfd_size_type count; |
| { |
| if (strcmp (section->name, ".options") == 0 |
| || strcmp (section->name, ".MIPS.options") == 0) |
| { |
| bfd_byte *c; |
| |
| if (elf_section_data (section) == NULL) |
| { |
| section->used_by_bfd = |
| (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); |
| if (elf_section_data (section) == NULL) |
| return false; |
| } |
| c = (bfd_byte *) elf_section_data (section)->tdata; |
| if (c == NULL) |
| { |
| bfd_size_type size; |
| |
| if (section->_cooked_size != 0) |
| size = section->_cooked_size; |
| else |
| size = section->_raw_size; |
| c = (bfd_byte *) bfd_zalloc (abfd, size); |
| if (c == NULL) |
| return false; |
| elf_section_data (section)->tdata = (PTR) c; |
| } |
| |
| memcpy (c + offset, location, count); |
| } |
| |
| return _bfd_elf_set_section_contents (abfd, section, location, offset, |
| count); |
| } |
| |
| /* Work over a section just before writing it out. This routine is |
| used by both the 32-bit and the 64-bit ABI. FIXME: We recognize |
| sections that need the SHF_MIPS_GPREL flag by name; there has to be |
| a better way. */ |
| |
| boolean |
| _bfd_mips_elf_section_processing (abfd, hdr) |
| bfd *abfd; |
| Elf_Internal_Shdr *hdr; |
| { |
| if (hdr->bfd_section != NULL) |
| { |
| const char *name = bfd_get_section_name (abfd, hdr->bfd_section); |
| |
| if (strcmp (name, ".sdata") == 0) |
| { |
| hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
| hdr->sh_type = SHT_PROGBITS; |
| } |
| else if (strcmp (name, ".sbss") == 0) |
| { |
| hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
| hdr->sh_type = SHT_NOBITS; |
| } |
| else if (strcmp (name, ".lit8") == 0 |
| || strcmp (name, ".lit4") == 0) |
| { |
| hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
| hdr->sh_type = SHT_PROGBITS; |
| } |
| else if (strcmp (name, ".compact_rel") == 0) |
| { |
| hdr->sh_flags = 0; |
| hdr->sh_type = SHT_PROGBITS; |
| } |
| else if (strcmp (name, ".rtproc") == 0) |
| { |
| if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) |
| { |
| unsigned int adjust; |
| |
| adjust = hdr->sh_size % hdr->sh_addralign; |
| if (adjust != 0) |
| hdr->sh_size += hdr->sh_addralign - adjust; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Work over a section just before writing it out. We update the GP |
| value in the SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS sections based |
| on the value we are using. */ |
| |
| static boolean |
| mips_elf32_section_processing (abfd, hdr) |
| bfd *abfd; |
| Elf32_Internal_Shdr *hdr; |
| { |
| if (hdr->sh_type == SHT_MIPS_REGINFO) |
| { |
| bfd_byte buf[4]; |
| |
| BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); |
| BFD_ASSERT (hdr->contents == NULL); |
| |
| if (bfd_seek (abfd, |
| hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, |
| SEEK_SET) == -1) |
| return false; |
| bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf); |
| if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4) |
| return false; |
| } |
| |
| if (hdr->sh_type == SHT_MIPS_OPTIONS |
| && hdr->bfd_section != NULL |
| && elf_section_data (hdr->bfd_section) != NULL |
| && elf_section_data (hdr->bfd_section)->tdata != NULL) |
| { |
| bfd_byte *contents, *l, *lend; |
| |
| /* We stored the section contents in the elf_section_data tdata |
| field in the set_section_contents routine. We save the |
| section contents so that we don't have to read them again. |
| At this point we know that elf_gp is set, so we can look |
| through the section contents to see if there is an |
| ODK_REGINFO structure. */ |
| |
| contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata; |
| l = contents; |
| lend = contents + hdr->sh_size; |
| while (l + sizeof (Elf_External_Options) <= lend) |
| { |
| Elf_Internal_Options intopt; |
| |
| bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, |
| &intopt); |
| if (intopt.kind == ODK_REGINFO) |
| { |
| bfd_byte buf[4]; |
| |
| if (bfd_seek (abfd, |
| (hdr->sh_offset |
| + (l - contents) |
| + sizeof (Elf_External_Options) |
| + (sizeof (Elf32_External_RegInfo) - 4)), |
| SEEK_SET) == -1) |
| return false; |
| bfd_h_put_32 (abfd, elf_gp (abfd), buf); |
| if (bfd_write (buf, 1, 4, abfd) != 4) |
| return false; |
| } |
| l += intopt.size; |
| } |
| } |
| |
| return _bfd_mips_elf_section_processing (abfd, hdr); |
| } |
| |
| /* MIPS ELF uses two common sections. One is the usual one, and the |
| other is for small objects. All the small objects are kept |
| together, and then referenced via the gp pointer, which yields |
| faster assembler code. This is what we use for the small common |
| section. This approach is copied from ecoff.c. */ |
| static asection mips_elf_scom_section; |
| static asymbol mips_elf_scom_symbol; |
| static asymbol *mips_elf_scom_symbol_ptr; |
| |
| /* MIPS ELF also uses an acommon section, which represents an |
| allocated common symbol which may be overridden by a |
| definition in a shared library. */ |
| static asection mips_elf_acom_section; |
| static asymbol mips_elf_acom_symbol; |
| static asymbol *mips_elf_acom_symbol_ptr; |
| |
| /* The Irix 5 support uses two virtual sections, which represent |
| text/data symbols defined in dynamic objects. */ |
| static asection mips_elf_text_section; |
| static asection *mips_elf_text_section_ptr; |
| static asymbol mips_elf_text_symbol; |
| static asymbol *mips_elf_text_symbol_ptr; |
| |
| static asection mips_elf_data_section; |
| static asection *mips_elf_data_section_ptr; |
| static asymbol mips_elf_data_symbol; |
| static asymbol *mips_elf_data_symbol_ptr; |
| |
| /* Handle the special MIPS section numbers that a symbol may use. |
| This is used for both the 32-bit and the 64-bit ABI. */ |
| |
| void |
| _bfd_mips_elf_symbol_processing (abfd, asym) |
| bfd *abfd; |
| asymbol *asym; |
| { |
| elf_symbol_type *elfsym; |
| |
| elfsym = (elf_symbol_type *) asym; |
| switch (elfsym->internal_elf_sym.st_shndx) |
| { |
| case SHN_MIPS_ACOMMON: |
| /* This section is used in a dynamically linked executable file. |
| It is an allocated common section. The dynamic linker can |
| either resolve these symbols to something in a shared |
| library, or it can just leave them here. For our purposes, |
| we can consider these symbols to be in a new section. */ |
| if (mips_elf_acom_section.name == NULL) |
| { |
| /* Initialize the acommon section. */ |
| mips_elf_acom_section.name = ".acommon"; |
| mips_elf_acom_section.flags = SEC_ALLOC; |
| mips_elf_acom_section.output_section = &mips_elf_acom_section; |
| mips_elf_acom_section.symbol = &mips_elf_acom_symbol; |
| mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; |
| mips_elf_acom_symbol.name = ".acommon"; |
| mips_elf_acom_symbol.flags = BSF_SECTION_SYM; |
| mips_elf_acom_symbol.section = &mips_elf_acom_section; |
| mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; |
| } |
| asym->section = &mips_elf_acom_section; |
| break; |
| |
| case SHN_COMMON: |
| /* Common symbols less than the GP size are automatically |
| treated as SHN_MIPS_SCOMMON symbols. */ |
| if (asym->value > elf_gp_size (abfd)) |
| break; |
| /* Fall through. */ |
| case SHN_MIPS_SCOMMON: |
| if (mips_elf_scom_section.name == NULL) |
| { |
| /* Initialize the small common section. */ |
| mips_elf_scom_section.name = ".scommon"; |
| mips_elf_scom_section.flags = SEC_IS_COMMON; |
| mips_elf_scom_section.output_section = &mips_elf_scom_section; |
| mips_elf_scom_section.symbol = &mips_elf_scom_symbol; |
| mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; |
| mips_elf_scom_symbol.name = ".scommon"; |
| mips_elf_scom_symbol.flags = BSF_SECTION_SYM; |
| mips_elf_scom_symbol.section = &mips_elf_scom_section; |
| mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; |
| } |
| asym->section = &mips_elf_scom_section; |
| asym->value = elfsym->internal_elf_sym.st_size; |
| break; |
| |
| case SHN_MIPS_SUNDEFINED: |
| asym->section = bfd_und_section_ptr; |
| break; |
| |
| #if 0 /* for SGI_COMPAT */ |
| case SHN_MIPS_TEXT: |
| asym->section = mips_elf_text_section_ptr; |
| break; |
| |
| case SHN_MIPS_DATA: |
| asym->section = mips_elf_data_section_ptr; |
| break; |
| #endif |
| } |
| } |
| |
| /* When creating an Irix 5 executable, we need REGINFO and RTPROC |
| segments. */ |
| |
| static int |
| mips_elf_additional_program_headers (abfd) |
| bfd *abfd; |
| { |
| asection *s; |
| int ret; |
| |
| ret = 0; |
| |
| if (! SGI_COMPAT (abfd)) |
| return ret; |
| |
| s = bfd_get_section_by_name (abfd, ".reginfo"); |
| if (s != NULL && (s->flags & SEC_LOAD) != 0) |
| { |
| /* We need a PT_MIPS_REGINFO segment. */ |
| ++ret; |
| } |
| |
| if (bfd_get_section_by_name (abfd, ".dynamic") != NULL |
| && bfd_get_section_by_name (abfd, ".mdebug") != NULL) |
| { |
| /* We need a PT_MIPS_RTPROC segment. */ |
| ++ret; |
| } |
| |
| return ret; |
| } |
| |
| /* Modify the segment map for an Irix 5 executable. */ |
| |
| static boolean |
| mips_elf_modify_segment_map (abfd) |
| bfd *abfd; |
| { |
| asection *s; |
| struct elf_segment_map *m, **pm; |
| |
| if (! SGI_COMPAT (abfd)) |
| return true; |
| |
| /* If there is a .reginfo section, we need a PT_MIPS_REGINFO |
| segment. */ |
| s = bfd_get_section_by_name (abfd, ".reginfo"); |
| if (s != NULL && (s->flags & SEC_LOAD) != 0) |
| { |
| for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
| if (m->p_type == PT_MIPS_REGINFO) |
| break; |
| if (m == NULL) |
| { |
| m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); |
| if (m == NULL) |
| return false; |
| |
| m->p_type = PT_MIPS_REGINFO; |
| m->count = 1; |
| m->sections[0] = s; |
| |
| /* We want to put it after the PHDR and INTERP segments. */ |
| pm = &elf_tdata (abfd)->segment_map; |
| while (*pm != NULL |
| && ((*pm)->p_type == PT_PHDR |
| || (*pm)->p_type == PT_INTERP)) |
| pm = &(*pm)->next; |
| |
| m->next = *pm; |
| *pm = m; |
| } |
| } |
| |
| /* If there are .dynamic and .mdebug sections, we make a room for |
| the RTPROC header. FIXME: Rewrite without section names. */ |
| if (bfd_get_section_by_name (abfd, ".interp") == NULL |
| && bfd_get_section_by_name (abfd, ".dynamic") != NULL |
| && bfd_get_section_by_name (abfd, ".mdebug") != NULL) |
| { |
| for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
| if (m->p_type == PT_MIPS_RTPROC) |
| break; |
| if (m == NULL) |
| { |
| m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); |
| if (m == NULL) |
| return false; |
| |
| m->p_type = PT_MIPS_RTPROC; |
| |
| s = bfd_get_section_by_name (abfd, ".rtproc"); |
| if (s == NULL) |
| { |
| m->count = 0; |
| m->p_flags = 0; |
| m->p_flags_valid = 1; |
| } |
| else |
| { |
| m->count = 1; |
| m->sections[0] = s; |
| } |
| |
| /* We want to put it after the DYNAMIC segment. */ |
| pm = &elf_tdata (abfd)->segment_map; |
| while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) |
| pm = &(*pm)->next; |
| if (*pm != NULL) |
| pm = &(*pm)->next; |
| |
| m->next = *pm; |
| *pm = m; |
| } |
| } |
| |
| /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, .dynstr, |
| .dynsym, and .hash sections, and everything in between. */ |
| for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) |
| if ((*pm)->p_type == PT_DYNAMIC) |
| break; |
| m = *pm; |
| if (m != NULL |
| && m->count == 1 |
| && strcmp (m->sections[0]->name, ".dynamic") == 0) |
| { |
| static const char *sec_names[] = |
| { ".dynamic", ".dynstr", ".dynsym", ".hash" }; |
| bfd_vma low, high; |
| unsigned int i, c; |
| struct elf_segment_map *n; |
| |
| low = 0xffffffff; |
| high = 0; |
| for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) |
| { |
| s = bfd_get_section_by_name (abfd, sec_names[i]); |
| if (s != NULL && (s->flags & SEC_LOAD) != 0) |
| { |
| bfd_size_type sz; |
| |
| if (low > s->vma) |
| low = s->vma; |
| sz = s->_cooked_size; |
| if (sz == 0) |
| sz = s->_raw_size; |
| if (high < s->vma + sz) |
| high = s->vma + sz; |
| } |
| } |
| |
| c = 0; |
| for (s = abfd->sections; s != NULL; s = s->next) |
| if ((s->flags & SEC_LOAD) != 0 |
| && s->vma >= low |
| && ((s->vma |
| + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) |
| <= high)) |
| ++c; |
| |
| n = ((struct elf_segment_map *) |
| bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *))); |
| if (n == NULL) |
| return false; |
| *n = *m; |
| n->count = c; |
| |
| i = 0; |
| for (s = abfd->sections; s != NULL; s = s->next) |
| { |
| if ((s->flags & SEC_LOAD) != 0 |
| && s->vma >= low |
| && ((s->vma |
| + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) |
| <= high)) |
| { |
| n->sections[i] = s; |
| ++i; |
| } |
| } |
| |
| *pm = n; |
| } |
| |
| return true; |
| } |
| |
| /* The structure of the runtime procedure descriptor created by the |
| loader for use by the static exception system. */ |
| |
| typedef struct runtime_pdr { |
| bfd_vma adr; /* memory address of start of procedure */ |
| long regmask; /* save register mask */ |
| long regoffset; /* save register offset */ |
| long fregmask; /* save floating point register mask */ |
| long fregoffset; /* save floating point register offset */ |
| long frameoffset; /* frame size */ |
| short framereg; /* frame pointer register */ |
| short pcreg; /* offset or reg of return pc */ |
| long irpss; /* index into the runtime string table */ |
| long reserved; |
| struct exception_info *exception_info;/* pointer to exception array */ |
| } RPDR, *pRPDR; |
| #define cbRPDR sizeof(RPDR) |
| #define rpdNil ((pRPDR) 0) |
| |
| /* Swap RPDR (runtime procedure table entry) for output. */ |
| |
| static void ecoff_swap_rpdr_out |
| PARAMS ((bfd *, const RPDR *, struct rpdr_ext *)); |
| |
| static void |
| ecoff_swap_rpdr_out (abfd, in, ex) |
| bfd *abfd; |
| const RPDR *in; |
| struct rpdr_ext *ex; |
| { |
| /* ecoff_put_off was defined in ecoffswap.h. */ |
| ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr); |
| bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask); |
| bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset); |
| bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask); |
| bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset); |
| bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset); |
| |
| bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg); |
| bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg); |
| |
| bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss); |
| #if 0 /* FIXME */ |
| ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info); |
| #endif |
| } |
| |
| /* Read ECOFF debugging information from a .mdebug section into a |
| ecoff_debug_info structure. */ |
| |
| boolean |
| _bfd_mips_elf_read_ecoff_info (abfd, section, debug) |
| bfd *abfd; |
| asection *section; |
| struct ecoff_debug_info *debug; |
| { |
| HDRR *symhdr; |
| const struct ecoff_debug_swap *swap; |
| char *ext_hdr = NULL; |
| |
| swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| memset (debug, 0, sizeof(*debug)); |
| |
| ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); |
| if (ext_hdr == NULL && swap->external_hdr_size != 0) |
| goto error_return; |
| |
| if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
| swap->external_hdr_size) |
| == false) |
| goto error_return; |
| |
| symhdr = &debug->symbolic_header; |
| (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); |
| |
| /* The symbolic header contains absolute file offsets and sizes to |
| read. */ |
| #define READ(ptr, offset, count, size, type) \ |
| if (symhdr->count == 0) \ |
| debug->ptr = NULL; \ |
| else \ |
| { \ |
| debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ |
| if (debug->ptr == NULL) \ |
| goto error_return; \ |
| if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ |
| || (bfd_read (debug->ptr, size, symhdr->count, \ |
| abfd) != size * symhdr->count)) \ |
| goto error_return; \ |
| } |
| |
| READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
| READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); |
| READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); |
| READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); |
| READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); |
| READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
| union aux_ext *); |
| READ (ss, cbSsOffset, issMax, sizeof (char), char *); |
| READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); |
| READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); |
| READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); |
| READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); |
| #undef READ |
| |
| debug->fdr = NULL; |
| debug->adjust = NULL; |
| |
| return true; |
| |
| error_return: |
| if (ext_hdr != NULL) |
| free (ext_hdr); |
| if (debug->line != NULL) |
| free (debug->line); |
| if (debug->external_dnr != NULL) |
| free (debug->external_dnr); |
| if (debug->external_pdr != NULL) |
| free (debug->external_pdr); |
| if (debug->external_sym != NULL) |
| free (debug->external_sym); |
| if (debug->external_opt != NULL) |
| free (debug->external_opt); |
| if (debug->external_aux != NULL) |
| free (debug->external_aux); |
| if (debug->ss != NULL) |
| free (debug->ss); |
| if (debug->ssext != NULL) |
| free (debug->ssext); |
| if (debug->external_fdr != NULL) |
| free (debug->external_fdr); |
| if (debug->external_rfd != NULL) |
| free (debug->external_rfd); |
| if (debug->external_ext != NULL) |
| free (debug->external_ext); |
| return false; |
| } |
| |
| /* MIPS ELF local labels start with '$', not 'L'. */ |
| |
| /*ARGSUSED*/ |
| static boolean |
| mips_elf_is_local_label_name (abfd, name) |
| bfd *abfd; |
| const char *name; |
| { |
| if (name[0] == '$') |
| return true; |
| |
| /* On Irix 6, the labels go back to starting with '.', so we accept |
| the generic ELF local label syntax as well. */ |
| return _bfd_elf_is_local_label_name (abfd, name); |
| } |
| |
| /* MIPS ELF uses a special find_nearest_line routine in order the |
| handle the ECOFF debugging information. */ |
| |
| struct mips_elf_find_line |
| { |
| struct ecoff_debug_info d; |
| struct ecoff_find_line i; |
| }; |
| |
| boolean |
| _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr, |
| functionname_ptr, line_ptr) |
| bfd *abfd; |
| asection *section; |
| asymbol **symbols; |
| bfd_vma offset; |
| const char **filename_ptr; |
| const char **functionname_ptr; |
| unsigned int *line_ptr; |
| { |
| asection *msec; |
| |
| if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, |
| filename_ptr, functionname_ptr, |
| line_ptr)) |
| return true; |
| |
| if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
| filename_ptr, functionname_ptr, |
| line_ptr)) |
| return true; |
| |
| msec = bfd_get_section_by_name (abfd, ".mdebug"); |
| if (msec != NULL) |
| { |
| flagword origflags; |
| struct mips_elf_find_line *fi; |
| const struct ecoff_debug_swap * const swap = |
| get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| |
| /* If we are called during a link, mips_elf_final_link may have |
| cleared the SEC_HAS_CONTENTS field. We force it back on here |
| if appropriate (which it normally will be). */ |
| origflags = msec->flags; |
| if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) |
| msec->flags |= SEC_HAS_CONTENTS; |
| |
| fi = elf_tdata (abfd)->find_line_info; |
| if (fi == NULL) |
| { |
| bfd_size_type external_fdr_size; |
| char *fraw_src; |
| char *fraw_end; |
| struct fdr *fdr_ptr; |
| |
| fi = ((struct mips_elf_find_line *) |
| bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); |
| if (fi == NULL) |
| { |
| msec->flags = origflags; |
| return false; |
| } |
| |
| if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) |
| { |
| msec->flags = origflags; |
| return false; |
| } |
| |
| /* Swap in the FDR information. */ |
| fi->d.fdr = ((struct fdr *) |
| bfd_alloc (abfd, |
| (fi->d.symbolic_header.ifdMax * |
| sizeof (struct fdr)))); |
| if (fi->d.fdr == NULL) |
| { |
| msec->flags = origflags; |
| return false; |
| } |
| external_fdr_size = swap->external_fdr_size; |
| fdr_ptr = fi->d.fdr; |
| fraw_src = (char *) fi->d.external_fdr; |
| fraw_end = (fraw_src |
| + fi->d.symbolic_header.ifdMax * external_fdr_size); |
| for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) |
| (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); |
| |
| elf_tdata (abfd)->find_line_info = fi; |
| |
| /* Note that we don't bother to ever free this information. |
| find_nearest_line is either called all the time, as in |
| objdump -l, so the information should be saved, or it is |
| rarely called, as in ld error messages, so the memory |
| wasted is unimportant. Still, it would probably be a |
| good idea for free_cached_info to throw it away. */ |
| } |
| |
| if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
| &fi->i, filename_ptr, functionname_ptr, |
| line_ptr)) |
| { |
| msec->flags = origflags; |
| return true; |
| } |
| |
| msec->flags = origflags; |
| } |
| |
| /* Fall back on the generic ELF find_nearest_line routine. */ |
| |
| return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
| filename_ptr, functionname_ptr, |
| line_ptr); |
| } |
| |
| /* The mips16 compiler uses a couple of special sections to handle |
| floating point arguments. |
| |
| Section names that look like .mips16.fn.FNNAME contain stubs that |
| copy floating point arguments from the fp regs to the gp regs and |
| then jump to FNNAME. If any 32 bit function calls FNNAME, the |
| call should be redirected to the stub instead. If no 32 bit |
| function calls FNNAME, the stub should be discarded. We need to |
| consider any reference to the function, not just a call, because |
| if the address of the function is taken we will need the stub, |
| since the address might be passed to a 32 bit function. |
| |
| Section names that look like .mips16.call.FNNAME contain stubs |
| that copy floating point arguments from the gp regs to the fp |
| regs and then jump to FNNAME. If FNNAME is a 32 bit function, |
| then any 16 bit function that calls FNNAME should be redirected |
| to the stub instead. If FNNAME is not a 32 bit function, the |
| stub should be discarded. |
| |
| .mips16.call.fp.FNNAME sections are similar, but contain stubs |
| which call FNNAME and then copy the return value from the fp regs |
| to the gp regs. These stubs store the return value in $18 while |
| calling FNNAME; any function which might call one of these stubs |
| must arrange to save $18 around the call. (This case is not |
| needed for 32 bit functions that call 16 bit functions, because |
| 16 bit functions always return floating point values in both |
| $f0/$f1 and $2/$3.) |
| |
| Note that in all cases FNNAME might be defined statically. |
| Therefore, FNNAME is not used literally. Instead, the relocation |
| information will indicate which symbol the section is for. |
| |
| We record any stubs that we find in the symbol table. */ |
| |
| #define FN_STUB ".mips16.fn." |
| #define CALL_STUB ".mips16.call." |
| #define CALL_FP_STUB ".mips16.call.fp." |
| |
| /* The MIPS ELF linker needs additional information for each symbol in |
| the global hash table. */ |
| |
| struct mips_elf_link_hash_entry |
| { |
| struct elf_link_hash_entry root; |
| |
| /* External symbol information. */ |
| EXTR esym; |
| |
| /* Number of MIPS_32 or MIPS_REL32 relocs against this symbol. */ |
| unsigned int mips_32_relocs; |
| |
| /* If there is a stub that 32 bit functions should use to call this |
| 16 bit function, this points to the section containing the stub. */ |
| asection *fn_stub; |
| |
| /* Whether we need the fn_stub; this is set if this symbol appears |
| in any relocs other than a 16 bit call. */ |
| boolean need_fn_stub; |
| |
| /* If there is a stub that 16 bit functions should use to call this |
| 32 bit function, this points to the section containing the stub. */ |
| asection *call_stub; |
| |
| /* This is like the call_stub field, but it is used if the function |
| being called returns a floating point value. */ |
| asection *call_fp_stub; |
| }; |
| |
| /* MIPS ELF linker hash table. */ |
| |
| struct mips_elf_link_hash_table |
| { |
| struct elf_link_hash_table root; |
| #if 0 |
| /* We no longer use this. */ |
| /* String section indices for the dynamic section symbols. */ |
| bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; |
| #endif |
| /* The number of .rtproc entries. */ |
| bfd_size_type procedure_count; |
| /* The size of the .compact_rel section (if SGI_COMPAT). */ |
| bfd_size_type compact_rel_size; |
| /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic |
| entry is set to the address of __rld_obj_head as in Irix 5. */ |
| boolean use_rld_obj_head; |
| /* This is the value of the __rld_map or __rld_obj_head symbol. */ |
| bfd_vma rld_value; |
| /* This is set if we see any mips16 stub sections. */ |
| boolean mips16_stubs_seen; |
| }; |
| |
| /* Look up an entry in a MIPS ELF linker hash table. */ |
| |
| #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ |
| ((struct mips_elf_link_hash_entry *) \ |
| elf_link_hash_lookup (&(table)->root, (string), (create), \ |
| (copy), (follow))) |
| |
| /* Traverse a MIPS ELF linker hash table. */ |
| |
| #define mips_elf_link_hash_traverse(table, func, info) \ |
| (elf_link_hash_traverse \ |
| (&(table)->root, \ |
| (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| (info))) |
| |
| /* Get the MIPS ELF linker hash table from a link_info structure. */ |
| |
| #define mips_elf_hash_table(p) \ |
| ((struct mips_elf_link_hash_table *) ((p)->hash)) |
| |
| static boolean mips_elf_output_extsym |
| PARAMS ((struct mips_elf_link_hash_entry *, PTR)); |
| |
| /* Create an entry in a MIPS ELF linker hash table. */ |
| |
| static struct bfd_hash_entry * |
| mips_elf_link_hash_newfunc (entry, table, string) |
| struct bfd_hash_entry *entry; |
| struct bfd_hash_table *table; |
| const char *string; |
| { |
| struct mips_elf_link_hash_entry *ret = |
| (struct mips_elf_link_hash_entry *) entry; |
| |
| /* Allocate the structure if it has not already been allocated by a |
| subclass. */ |
| if (ret == (struct mips_elf_link_hash_entry *) NULL) |
| ret = ((struct mips_elf_link_hash_entry *) |
| bfd_hash_allocate (table, |
| sizeof (struct mips_elf_link_hash_entry))); |
| if (ret == (struct mips_elf_link_hash_entry *) NULL) |
| return (struct bfd_hash_entry *) ret; |
| |
| /* Call the allocation method of the superclass. */ |
| ret = ((struct mips_elf_link_hash_entry *) |
| _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| table, string)); |
| if (ret != (struct mips_elf_link_hash_entry *) NULL) |
| { |
| /* Set local fields. */ |
| memset (&ret->esym, 0, sizeof (EXTR)); |
| /* We use -2 as a marker to indicate that the information has |
| not been set. -1 means there is no associated ifd. */ |
| ret->esym.ifd = -2; |
| ret->mips_32_relocs = 0; |
| ret->fn_stub = NULL; |
| ret->need_fn_stub = false; |
| ret->call_stub = NULL; |
| ret->call_fp_stub = NULL; |
| } |
| |
| return (struct bfd_hash_entry *) ret; |
| } |
| |
| /* Create a MIPS ELF linker hash table. */ |
| |
| static struct bfd_link_hash_table * |
| mips_elf_link_hash_table_create (abfd) |
| bfd *abfd; |
| { |
| struct mips_elf_link_hash_table *ret; |
| |
| ret = ((struct mips_elf_link_hash_table *) |
| bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table))); |
| if (ret == (struct mips_elf_link_hash_table *) NULL) |
| return NULL; |
| |
| if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| mips_elf_link_hash_newfunc)) |
| { |
| bfd_release (abfd, ret); |
| return NULL; |
| } |
| |
| #if 0 |
| /* We no longer use this. */ |
| for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) |
| ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; |
| #endif |
| ret->procedure_count = 0; |
| ret->compact_rel_size = 0; |
| ret->use_rld_obj_head = false; |
| ret->rld_value = 0; |
| ret->mips16_stubs_seen = false; |
| |
| return &ret->root.root; |
| } |
| |
| /* Hook called by the linker routine which adds symbols from an object |
| file. We must handle the special MIPS section numbers here. */ |
| |
| /*ARGSUSED*/ |
| static boolean |
| mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| const Elf_Internal_Sym *sym; |
| const char **namep; |
| flagword *flagsp; |
| asection **secp; |
| bfd_vma *valp; |
| { |
| if (SGI_COMPAT (abfd) |
| && (abfd->flags & DYNAMIC) != 0 |
| && strcmp (*namep, "_rld_new_interface") == 0) |
| { |
| /* Skip Irix 5 rld entry name. */ |
| *namep = NULL; |
| return true; |
| } |
| |
| switch (sym->st_shndx) |
| { |
| case SHN_COMMON: |
| /* Common symbols less than the GP size are automatically |
| treated as SHN_MIPS_SCOMMON symbols. */ |
| if (sym->st_size > elf_gp_size (abfd)) |
| break; |
| /* Fall through. */ |
| case SHN_MIPS_SCOMMON: |
| *secp = bfd_make_section_old_way (abfd, ".scommon"); |
| (*secp)->flags |= SEC_IS_COMMON; |
| *valp = sym->st_size; |
| break; |
| |
| case SHN_MIPS_TEXT: |
| /* This section is used in a shared object. */ |
| if (mips_elf_text_section_ptr == NULL) |
| { |
| /* Initialize the section. */ |
| mips_elf_text_section.name = ".text"; |
| mips_elf_text_section.flags = SEC_NO_FLAGS; |
| mips_elf_text_section.output_section = NULL; |
| mips_elf_text_section.symbol = &mips_elf_text_symbol; |
| mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr; |
| mips_elf_text_symbol.name = ".text"; |
| mips_elf_text_symbol.flags = BSF_SECTION_SYM; |
| mips_elf_text_symbol.section = &mips_elf_text_section; |
| mips_elf_text_symbol_ptr = &mips_elf_text_symbol; |
| mips_elf_text_section_ptr = &mips_elf_text_section; |
| } |
| /* This code used to do *secp = bfd_und_section_ptr if |
| info->shared. I don't know why, and that doesn't make sense, |
| so I took it out. */ |
| *secp = mips_elf_text_section_ptr; |
| break; |
| |
| case SHN_MIPS_ACOMMON: |
| /* Fall through. XXX Can we treat this as allocated data? */ |
| case SHN_MIPS_DATA: |
| /* This section is used in a shared object. */ |
| if (mips_elf_data_section_ptr == NULL) |
| { |
| /* Initialize the section. */ |
| mips_elf_data_section.name = ".data"; |
| mips_elf_data_section.flags = SEC_NO_FLAGS; |
| mips_elf_data_section.output_section = NULL; |
| mips_elf_data_section.symbol = &mips_elf_data_symbol; |
| mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr; |
| mips_elf_data_symbol.name = ".data"; |
| mips_elf_data_symbol.flags = BSF_SECTION_SYM; |
| mips_elf_data_symbol.section = &mips_elf_data_section; |
| mips_elf_data_symbol_ptr = &mips_elf_data_symbol; |
| mips_elf_data_section_ptr = &mips_elf_data_section; |
| } |
| /* This code used to do *secp = bfd_und_section_ptr if |
| info->shared. I don't know why, and that doesn't make sense, |
| so I took it out. */ |
| *secp = mips_elf_data_section_ptr; |
| break; |
| |
| case SHN_MIPS_SUNDEFINED: |
| *secp = bfd_und_section_ptr; |
| break; |
| } |
| |
| if (SGI_COMPAT (abfd) |
| && ! info->shared |
| && info->hash->creator == abfd->xvec |
| && strcmp (*namep, "__rld_obj_head") == 0) |
| { |
| struct elf_link_hash_entry *h; |
| |
| /* Mark __rld_obj_head as dynamic. */ |
| h = NULL; |
| if (! (_bfd_generic_link_add_one_symbol |
| (info, abfd, *namep, BSF_GLOBAL, *secp, |
| (bfd_vma) *valp, (const char *) NULL, false, |
| get_elf_backend_data (abfd)->collect, |
| (struct bfd_link_hash_entry **) &h))) |
| return false; |
| h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
| h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| h->type = STT_OBJECT; |
| |
| if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| |
| mips_elf_hash_table (info)->use_rld_obj_head = true; |
| } |
| |
| /* If this is a mips16 text symbol, add 1 to the value to make it |
| odd. This will cause something like .word SYM to come up with |
| the right value when it is loaded into the PC. */ |
| if (sym->st_other == STO_MIPS16) |
| ++*valp; |
| |
| return true; |
| } |
| |
| /* Structure used to pass information to mips_elf_output_extsym. */ |
| |
| struct extsym_info |
| { |
| bfd *abfd; |
| struct bfd_link_info *info; |
| struct ecoff_debug_info *debug; |
| const struct ecoff_debug_swap *swap; |
| boolean failed; |
| }; |
| |
| /* This routine is used to write out ECOFF debugging external symbol |
| information. It is called via mips_elf_link_hash_traverse. The |
| ECOFF external symbol information must match the ELF external |
| symbol information. Unfortunately, at this point we don't know |
| whether a symbol is required by reloc information, so the two |
| tables may wind up being different. We must sort out the external |
| symbol information before we can set the final size of the .mdebug |
| section, and we must set the size of the .mdebug section before we |
| can relocate any sections, and we can't know which symbols are |
| required by relocation until we relocate the sections. |
| Fortunately, it is relatively unlikely that any symbol will be |
| stripped but required by a reloc. In particular, it can not happen |
| when generating a final executable. */ |
| |
| static boolean |
| mips_elf_output_extsym (h, data) |
| struct mips_elf_link_hash_entry *h; |
| PTR data; |
| { |
| struct extsym_info *einfo = (struct extsym_info *) data; |
| boolean strip; |
| asection *sec, *output_section; |
| |
| if (h->root.indx == -2) |
| strip = false; |
| else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) |
| && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 |
| && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) |
| strip = true; |
| else if (einfo->info->strip == strip_all |
| || (einfo->info->strip == strip_some |
| && bfd_hash_lookup (einfo->info->keep_hash, |
| h->root.root.root.string, |
| false, false) == NULL)) |
| strip = true; |
| else |
| strip = false; |
| |
| if (strip) |
| return true; |
| |
| if (h->esym.ifd == -2) |
| { |
| h->esym.jmptbl = 0; |
| h->esym.cobol_main = 0; |
| h->esym.weakext = 0; |
| h->esym.reserved = 0; |
| h->esym.ifd = ifdNil; |
| h->esym.asym.value = 0; |
| h->esym.asym.st = stGlobal; |
| |
| if (SGI_COMPAT (einfo->abfd) |
| && (h->root.root.type == bfd_link_hash_undefined |
| || h->root.root.type == bfd_link_hash_undefweak)) |
| { |
| const char *name; |
| |
| /* Use undefined class. Also, set class and type for some |
| special symbols. */ |
| name = h->root.root.root.string; |
| if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 |
| || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) |
| { |
| h->esym.asym.sc = scData; |
| h->esym.asym.st = stLabel; |
| h->esym.asym.value = 0; |
| } |
| else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) |
| { |
| h->esym.asym.sc = scAbs; |
| h->esym.asym.st = stLabel; |
| h->esym.asym.value = |
| mips_elf_hash_table (einfo->info)->procedure_count; |
| } |
| else if (strcmp (name, "_gp_disp") == 0) |
| { |
| h->esym.asym.sc = scAbs; |
| h->esym.asym.st = stLabel; |
| h->esym.asym.value = elf_gp (einfo->abfd); |
| } |
| else |
| h->esym.asym.sc = scUndefined; |
| } |
| else if (h->root.root.type != bfd_link_hash_defined |
| && h->root.root.type != bfd_link_hash_defweak) |
| h->esym.asym.sc = scAbs; |
| else |
| { |
| const char *name; |
| |
| sec = h->root.root.u.def.section; |
| output_section = sec->output_section; |
| |
| /* When making a shared library and symbol h is the one from |
| the another shared library, OUTPUT_SECTION may be null. */ |
| if (output_section == NULL) |
| h->esym.asym.sc = scUndefined; |
| else |
| { |
| name = bfd_section_name (output_section->owner, output_section); |
| |
| if (strcmp (name, ".text") == 0) |
| h->esym.asym.sc = scText; |
| else if (strcmp (name, ".data") == 0) |
| h->esym.asym.sc = scData; |
| else if (strcmp (name, ".sdata") == 0) |
| h->esym.asym.sc = scSData; |
| else if (strcmp (name, ".rodata") == 0 |
| || strcmp (name, ".rdata") == 0) |
| h->esym.asym.sc = scRData; |
| else if (strcmp (name, ".bss") == 0) |
| h->esym.asym.sc = scBss; |
| else if (strcmp (name, ".sbss") == 0) |
| h->esym.asym.sc = scSBss; |
| else if (strcmp (name, ".init") == 0) |
| h->esym.asym.sc = scInit; |
| else if (strcmp (name, ".fini") == 0) |
| h->esym.asym.sc = scFini; |
| else |
| h->esym.asym.sc = scAbs; |
| } |
| } |
| |
| h->esym.asym.reserved = 0; |
| h->esym.asym.index = indexNil; |
| } |
| |
| if (h->root.root.type == bfd_link_hash_common) |
| h->esym.asym.value = h->root.root.u.c.size; |
| else if (h->root.root.type == bfd_link_hash_defined |
| || h->root.root.type == bfd_link_hash_defweak) |
| { |
| if (h->esym.asym.sc == scCommon) |
| h->esym.asym.sc = scBss; |
| else if (h->esym.asym.sc == scSCommon) |
| h->esym.asym.sc = scSBss; |
| |
| sec = h->root.root.u.def.section; |
| output_section = sec->output_section; |
| if (output_section != NULL) |
| h->esym.asym.value = (h->root.root.u.def.value |
| + sec->output_offset |
| + output_section->vma); |
| else |
| h->esym.asym.value = 0; |
| } |
| else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
| { |
| /* Set type and value for a symbol with a function stub. */ |
| h->esym.asym.st = stProc; |
| sec = h->root.root.u.def.section; |
| if (sec == NULL) |
| h->esym.asym.value = 0; |
| else |
| { |
| output_section = sec->output_section; |
| if (output_section != NULL) |
| h->esym.asym.value = (h->root.plt.offset |
| + sec->output_offset |
| + output_section->vma); |
| else |
| h->esym.asym.value = 0; |
| } |
| #if 0 /* FIXME? */ |
| h->esym.ifd = 0; |
| #endif |
| } |
| |
| if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
| h->root.root.root.string, |
| &h->esym)) |
| { |
| einfo->failed = true; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* Create a runtime procedure table from the .mdebug section. */ |
| |
| static boolean |
| mips_elf_create_procedure_table (handle, abfd, info, s, debug) |
| PTR handle; |
| bfd *abfd; |
| struct bfd_link_info *info; |
| asection *s; |
| struct ecoff_debug_info *debug; |
| { |
| const struct ecoff_debug_swap *swap; |
| HDRR *hdr = &debug->symbolic_header; |
| RPDR *rpdr, *rp; |
| struct rpdr_ext *erp; |
| PTR rtproc; |
| struct pdr_ext *epdr; |
| struct sym_ext *esym; |
| char *ss, **sv; |
| char *str; |
| unsigned long size, count; |
| unsigned long sindex; |
| unsigned long i; |
| PDR pdr; |
| SYMR sym; |
| const char *no_name_func = _("static procedure (no name)"); |
| |
| epdr = NULL; |
| rpdr = NULL; |
| esym = NULL; |
| ss = NULL; |
| sv = NULL; |
| |
| swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| |
| sindex = strlen (no_name_func) + 1; |
| count = hdr->ipdMax; |
| if (count > 0) |
| { |
| size = swap->external_pdr_size; |
| |
| epdr = (struct pdr_ext *) bfd_malloc (size * count); |
| if (epdr == NULL) |
| goto error_return; |
| |
| if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr)) |
| goto error_return; |
| |
| size = sizeof (RPDR); |
| rp = rpdr = (RPDR *) bfd_malloc (size * count); |
| if (rpdr == NULL) |
| goto error_return; |
| |
| sv = (char **) bfd_malloc (sizeof (char *) * count); |
| if (sv == NULL) |
| goto error_return; |
| |
| count = hdr->isymMax; |
| size = swap->external_sym_size; |
| esym = (struct sym_ext *) bfd_malloc (size * count); |
| if (esym == NULL) |
| goto error_return; |
| |
| if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym)) |
| goto error_return; |
| |
| count = hdr->issMax; |
| ss = (char *) bfd_malloc (count); |
| if (ss == NULL) |
| goto error_return; |
| if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss)) |
| goto error_return; |
| |
| count = hdr->ipdMax; |
| for (i = 0; i < count; i++, rp++) |
| { |
| (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr); |
| (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym); |
| rp->adr = sym.value; |
| rp->regmask = pdr.regmask; |
| rp->regoffset = pdr.regoffset; |
| rp->fregmask = pdr.fregmask; |
| rp->fregoffset = pdr.fregoffset; |
| rp->frameoffset = pdr.frameoffset; |
| rp->framereg = pdr.framereg; |
| rp->pcreg = pdr.pcreg; |
| rp->irpss = sindex; |
| sv[i] = ss + sym.iss; |
| sindex += strlen (sv[i]) + 1; |
| } |
| } |
| |
| size = sizeof (struct rpdr_ext) * (count + 2) + sindex; |
| size = BFD_ALIGN (size, 16); |
| rtproc = (PTR) bfd_alloc (abfd, size); |
| if (rtproc == NULL) |
| { |
| mips_elf_hash_table (info)->procedure_count = 0; |
| goto error_return; |
| } |
| |
| mips_elf_hash_table (info)->procedure_count = count + 2; |
| |
| erp = (struct rpdr_ext *) rtproc; |
| memset (erp, 0, sizeof (struct rpdr_ext)); |
| erp++; |
| str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); |
| strcpy (str, no_name_func); |
| str += strlen (no_name_func) + 1; |
| for (i = 0; i < count; i++) |
| { |
| ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); |
| strcpy (str, sv[i]); |
| str += strlen (sv[i]) + 1; |
| } |
| ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr); |
| |
| /* Set the size and contents of .rtproc section. */ |
| s->_raw_size = size; |
| s->contents = (bfd_byte *) rtproc; |
| |
| /* Skip this section later on (I don't think this currently |
| matters, but someday it might). */ |
| s->link_order_head = (struct bfd_link_order *) NULL; |
| |
| if (epdr != NULL) |
| free (epdr); |
| if (rpdr != NULL) |
| free (rpdr); |
| if (esym != NULL) |
| free (esym); |
| if (ss != NULL) |
| free (ss); |
| if (sv != NULL) |
| free (sv); |
| |
| return true; |
| |
| error_return: |
| if (epdr != NULL) |
| free (epdr); |
| if (rpdr != NULL) |
| free (rpdr); |
| if (esym != NULL) |
| free (esym); |
| if (ss != NULL) |
| free (ss); |
| if (sv != NULL) |
| free (sv); |
| return false; |
| } |
| |
| /* A comparison routine used to sort .gptab entries. */ |
| |
| static int |
| gptab_compare (p1, p2) |
| const PTR p1; |
| const PTR p2; |
| { |
| const Elf32_gptab *a1 = (const Elf32_gptab *) p1; |
| const Elf32_gptab *a2 = (const Elf32_gptab *) p2; |
| |
| return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; |
| } |
| |
| /* We need to use a special link routine to handle the .reginfo and |
| the .mdebug sections. We need to merge all instances of these |
| sections together, not write them all out sequentially. */ |
| |
| static boolean |
| mips_elf_final_link (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| asection **secpp; |
| asection *o; |
| struct bfd_link_order *p; |
| asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; |
| asection *rtproc_sec; |
| Elf32_RegInfo reginfo; |
| struct ecoff_debug_info debug; |
| const struct ecoff_debug_swap *swap |
| = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| HDRR *symhdr = &debug.symbolic_header; |
| PTR mdebug_handle = NULL; |
| |
| /* Drop the .options section, since it has special semantics which I |
| haven't bothered to figure out. */ |
| for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) |
| { |
| if (strcmp ((*secpp)->name, ".options") == 0) |
| { |
| for (p = (*secpp)->link_order_head; p != NULL; p = p->next) |
| if (p->type == bfd_indirect_link_order) |
| p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; |
| (*secpp)->link_order_head = NULL; |
| *secpp = (*secpp)->next; |
| --abfd->section_count; |
| break; |
| } |
| } |
| |
| /* Get a value for the GP register. */ |
| if (elf_gp (abfd) == 0) |
| { |
| struct bfd_link_hash_entry *h; |
| |
| h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
| if (h != (struct bfd_link_hash_entry *) NULL |
| && h->type == bfd_link_hash_defined) |
| elf_gp (abfd) = (h->u.def.value |
| + h->u.def.section->output_section->vma |
| + h->u.def.section->output_offset); |
| else if (info->relocateable) |
| { |
| bfd_vma lo; |
| |
| /* Make up a value. */ |
| lo = (bfd_vma) -1; |
| for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
| { |
| if (o->vma < lo |
| && (strcmp (o->name, ".sbss") == 0 |
| || strcmp (o->name, ".sdata") == 0 |
| || strcmp (o->name, ".lit4") == 0 |
| || strcmp (o->name, ".lit8") == 0)) |
| lo = o->vma; |
| } |
| elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd); |
| } |
| else |
| { |
| /* If the relocate_section function needs to do a reloc |
| involving the GP value, it should make a reloc_dangerous |
| callback to warn that GP is not defined. */ |
| } |
| } |
| |
| /* Go through the sections and collect the .reginfo and .mdebug |
| information. */ |
| reginfo_sec = NULL; |
| mdebug_sec = NULL; |
| gptab_data_sec = NULL; |
| gptab_bss_sec = NULL; |
| for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
| { |
| if (strcmp (o->name, ".reginfo") == 0) |
| { |
| memset (®info, 0, sizeof reginfo); |
| |
| /* We have found the .reginfo section in the output file. |
| Look through all the link_orders comprising it and merge |
| the information together. */ |
| for (p = o->link_order_head; |
| p != (struct bfd_link_order *) NULL; |
| p = p->next) |
| { |
| asection *input_section; |
| bfd *input_bfd; |
| Elf32_External_RegInfo ext; |
| Elf32_RegInfo sub; |
| |
| if (p->type != bfd_indirect_link_order) |
| { |
| if (p->type == bfd_fill_link_order) |
| continue; |
| abort (); |
| } |
| |
| input_section = p->u.indirect.section; |
| input_bfd = input_section->owner; |
| |
| /* The linker emulation code has probably clobbered the |
| size to be zero bytes. */ |
| if (input_section->_raw_size == 0) |
| input_section->_raw_size = sizeof (Elf32_External_RegInfo); |
| |
| if (! bfd_get_section_contents (input_bfd, input_section, |
| (PTR) &ext, |
| (file_ptr) 0, |
| sizeof ext)) |
| return false; |
| |
| bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); |
| |
| reginfo.ri_gprmask |= sub.ri_gprmask; |
| reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; |
| reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; |
| reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; |
| reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; |
| |
| /* ri_gp_value is set by the function |
| mips_elf32_section_processing when the section is |
| finally written out. */ |
| |
| /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| elf_link_input_bfd ignores this section. */ |
| input_section->flags &=~ SEC_HAS_CONTENTS; |
| } |
| |
| /* Size has been set in mips_elf_always_size_sections */ |
| BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo)); |
| |
| /* Skip this section later on (I don't think this currently |
| matters, but someday it might). */ |
| o->link_order_head = (struct bfd_link_order *) NULL; |
| |
| reginfo_sec = o; |
| } |
| |
| if (strcmp (o->name, ".mdebug") == 0) |
| { |
| struct extsym_info einfo; |
| |
| /* We have found the .mdebug section in the output file. |
| Look through all the link_orders comprising it and merge |
| the information together. */ |
| symhdr->magic = swap->sym_magic; |
| /* FIXME: What should the version stamp be? */ |
| symhdr->vstamp = 0; |
| symhdr->ilineMax = 0; |
| symhdr->cbLine = 0; |
| symhdr->idnMax = 0; |
| symhdr->ipdMax = 0; |
| symhdr->isymMax = 0; |
| symhdr->ioptMax = 0; |
| symhdr->iauxMax = 0; |
| symhdr->issMax = 0; |
| symhdr->issExtMax = 0; |
| symhdr->ifdMax = 0; |
| symhdr->crfd = 0; |
| symhdr->iextMax = 0; |
| |
| /* We accumulate the debugging information itself in the |
| debug_info structure. */ |
| debug.line = NULL; |
| debug.external_dnr = NULL; |
| debug.external_pdr = NULL; |
| debug.external_sym = NULL; |
| debug.external_opt = NULL; |
| debug.external_aux = NULL; |
| debug.ss = NULL; |
| debug.ssext = debug.ssext_end = NULL; |
| debug.external_fdr = NULL; |
| debug.external_rfd = NULL; |
| debug.external_ext = debug.external_ext_end = NULL; |
| |
| mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); |
| if (mdebug_handle == (PTR) NULL) |
| return false; |
| |
| if (SGI_COMPAT (abfd)) |
| { |
| asection *s; |
| EXTR esym; |
| bfd_vma last; |
| unsigned int i; |
| static const char * const name[] = |
| { ".text", ".init", ".fini", ".data", |
| ".rodata", ".sdata", ".sbss", ".bss" }; |
| static const int sc[] = { scText, scInit, scFini, scData, |
| scRData, scSData, scSBss, scBss }; |
| |
| esym.jmptbl = 0; |
| esym.cobol_main = 0; |
| esym.weakext = 0; |
| esym.reserved = 0; |
| esym.ifd = ifdNil; |
| esym.asym.iss = issNil; |
| esym.asym.st = stLocal; |
| esym.asym.reserved = 0; |
| esym.asym.index = indexNil; |
| last = 0; |
| for (i = 0; i < 8; i++) |
| { |
| esym.asym.sc = sc[i]; |
| s = bfd_get_section_by_name (abfd, name[i]); |
| if (s != NULL) |
| { |
| esym.asym.value = s->vma; |
| last = s->vma + s->_raw_size; |
| } |
| else |
| esym.asym.value = last; |
| |
| if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, |
| name[i], &esym)) |
| return false; |
| } |
| } |
| |
| for (p = o->link_order_head; |
| p != (struct bfd_link_order *) NULL; |
| p = p->next) |
| { |
| asection *input_section; |
| bfd *input_bfd; |
| const struct ecoff_debug_swap *input_swap; |
| struct ecoff_debug_info input_debug; |
| char *eraw_src; |
| char *eraw_end; |
| |
| if (p->type != bfd_indirect_link_order) |
| { |
| if (p->type == bfd_fill_link_order) |
| continue; |
| abort (); |
| } |
| |
| input_section = p->u.indirect.section; |
| input_bfd = input_section->owner; |
| |
| if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour |
| || (get_elf_backend_data (input_bfd) |
| ->elf_backend_ecoff_debug_swap) == NULL) |
| { |
| /* I don't know what a non MIPS ELF bfd would be |
| doing with a .mdebug section, but I don't really |
| want to deal with it. */ |
| continue; |
| } |
| |
| input_swap = (get_elf_backend_data (input_bfd) |
| ->elf_backend_ecoff_debug_swap); |
| |
| BFD_ASSERT (p->size == input_section->_raw_size); |
| |
| /* The ECOFF linking code expects that we have already |
| read in the debugging information and set up an |
| ecoff_debug_info structure, so we do that now. */ |
| if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, |
| &input_debug)) |
| return false; |
| |
| if (! (bfd_ecoff_debug_accumulate |
| (mdebug_handle, abfd, &debug, swap, input_bfd, |
| &input_debug, input_swap, info))) |
| return false; |
| |
| /* Loop through the external symbols. For each one with |
| interesting information, try to find the symbol in |
| the linker global hash table and save the information |
| for the output external symbols. */ |
| eraw_src = input_debug.external_ext; |
| eraw_end = (eraw_src |
| + (input_debug.symbolic_header.iextMax |
| * input_swap->external_ext_size)); |
| for (; |
| eraw_src < eraw_end; |
| eraw_src += input_swap->external_ext_size) |
| { |
| EXTR ext; |
| const char *name; |
| struct mips_elf_link_hash_entry *h; |
| |
| (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); |
| if (ext.asym.sc == scNil |
| || ext.asym.sc == scUndefined |
| || ext.asym.sc == scSUndefined) |
| continue; |
| |
| name = input_debug.ssext + ext.asym.iss; |
| h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), |
| name, false, false, true); |
| if (h == NULL || h->esym.ifd != -2) |
| continue; |
| |
| if (ext.ifd != -1) |
| { |
| BFD_ASSERT (ext.ifd |
| < input_debug.symbolic_header.ifdMax); |
| ext.ifd = input_debug.ifdmap[ext.ifd]; |
| } |
| |
| h->esym = ext; |
| } |
| |
| /* Free up the information we just read. */ |
| free (input_debug.line); |
| free (input_debug.external_dnr); |
| free (input_debug.external_pdr); |
| free (input_debug.external_sym); |
| free (input_debug.external_opt); |
| free (input_debug.external_aux); |
| free (input_debug.ss); |
| free (input_debug.ssext); |
| free (input_debug.external_fdr); |
| free (input_debug.external_rfd); |
| free (input_debug.external_ext); |
| |
| /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| elf_link_input_bfd ignores this section. */ |
| input_section->flags &=~ SEC_HAS_CONTENTS; |
| } |
| |
| if (SGI_COMPAT (abfd) && info->shared) |
| { |
| /* Create .rtproc section. */ |
| rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); |
| if (rtproc_sec == NULL) |
| { |
| flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| | SEC_LINKER_CREATED | SEC_READONLY); |
| |
| rtproc_sec = bfd_make_section (abfd, ".rtproc"); |
| if (rtproc_sec == NULL |
| || ! bfd_set_section_flags (abfd, rtproc_sec, flags) |
| || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
| return false; |
| } |
| |
| if (! mips_elf_create_procedure_table (mdebug_handle, abfd, |
| info, rtproc_sec, &debug)) |
| return false; |
| } |
| |
| /* Build the external symbol information. */ |
| einfo.abfd = abfd; |
| einfo.info = info; |
| einfo.debug = &debug; |
| einfo.swap = swap; |
| einfo.failed = false; |
| mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
| mips_elf_output_extsym, |
| (PTR) &einfo); |
| if (einfo.failed) |
| return false; |
| |
| /* Set the size of the .mdebug section. */ |
| o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); |
| |
| /* Skip this section later on (I don't think this currently |
| matters, but someday it might). */ |
| o->link_order_head = (struct bfd_link_order *) NULL; |
| |
| mdebug_sec = o; |
| } |
| |
| if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) |
| { |
| const char *subname; |
| unsigned int c; |
| Elf32_gptab *tab; |
| Elf32_External_gptab *ext_tab; |
| unsigned int i; |
| |
| /* The .gptab.sdata and .gptab.sbss sections hold |
| information describing how the small data area would |
| change depending upon the -G switch. These sections |
| not used in executables files. */ |
| if (! info->relocateable) |
| { |
| asection **secpp; |
| |
| for (p = o->link_order_head; |
| p != (struct bfd_link_order *) NULL; |
| p = p->next) |
| { |
| asection *input_section; |
| |
| if (p->type != bfd_indirect_link_order) |
| { |
| if (p->type == bfd_fill_link_order) |
| continue; |
| abort (); |
| } |
| |
| input_section = p->u.indirect.section; |
| |
| /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| elf_link_input_bfd ignores this section. */ |
| input_section->flags &=~ SEC_HAS_CONTENTS; |
| } |
| |
| /* Skip this section later on (I don't think this |
| currently matters, but someday it might). */ |
| o->link_order_head = (struct bfd_link_order *) NULL; |
| |
| /* Really remove the section. */ |
| for (secpp = &abfd->sections; |
| *secpp != o; |
| secpp = &(*secpp)->next) |
| ; |
| *secpp = (*secpp)->next; |
| --abfd->section_count; |
| |
| continue; |
| } |
| |
| /* There is one gptab for initialized data, and one for |
| uninitialized data. */ |
| if (strcmp (o->name, ".gptab.sdata") == 0) |
| gptab_data_sec = o; |
| else if (strcmp (o->name, ".gptab.sbss") == 0) |
| gptab_bss_sec = o; |
| else |
| { |
| (*_bfd_error_handler) |
| (_("%s: illegal section name `%s'"), |
| bfd_get_filename (abfd), o->name); |
| bfd_set_error (bfd_error_nonrepresentable_section); |
| return false; |
| } |
| |
| /* The linker script always combines .gptab.data and |
| .gptab.sdata into .gptab.sdata, and likewise for |
| .gptab.bss and .gptab.sbss. It is possible that there is |
| no .sdata or .sbss section in the output file, in which |
| case we must change the name of the output section. */ |
| subname = o->name + sizeof ".gptab" - 1; |
| if (bfd_get_section_by_name (abfd, subname) == NULL) |
| { |
| if (o == gptab_data_sec) |
| o->name = ".gptab.data"; |
| else |
| o->name = ".gptab.bss"; |
| subname = o->name + sizeof ".gptab" - 1; |
| BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); |
| } |
| |
| /* Set up the first entry. */ |
| c = 1; |
| tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); |
| if (tab == NULL) |
| return false; |
| tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
| tab[0].gt_header.gt_unused = 0; |
| |
| /* Combine the input sections. */ |
| for (p = o->link_order_head; |
| p != (struct bfd_link_order *) NULL; |
| p = p->next) |
| { |
| asection *input_section; |
| bfd *input_bfd; |
| bfd_size_type size; |
| unsigned long last; |
| bfd_size_type gpentry; |
| |
| if (p->type != bfd_indirect_link_order) |
| { |
| if (p->type == bfd_fill_link_order) |
| continue; |
| abort (); |
| } |
| |
| input_section = p->u.indirect.section; |
| input_bfd = input_section->owner; |
| |
| /* Combine the gptab entries for this input section one |
| by one. We know that the input gptab entries are |
| sorted by ascending -G value. */ |
| size = bfd_section_size (input_bfd, input_section); |
| last = 0; |
| for (gpentry = sizeof (Elf32_External_gptab); |
| gpentry < size; |
| gpentry += sizeof (Elf32_External_gptab)) |
| { |
| Elf32_External_gptab ext_gptab; |
| Elf32_gptab int_gptab; |
| unsigned long val; |
| unsigned long add; |
| boolean exact; |
| unsigned int look; |
| |
| if (! (bfd_get_section_contents |
| (input_bfd, input_section, (PTR) &ext_gptab, |
| gpentry, sizeof (Elf32_External_gptab)))) |
| { |
| free (tab); |
| return false; |
| } |
| |
| bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, |
| &int_gptab); |
| val = int_gptab.gt_entry.gt_g_value; |
| add = int_gptab.gt_entry.gt_bytes - last; |
| |
| exact = false; |
| for (look = 1; look < c; look++) |
| { |
| if (tab[look].gt_entry.gt_g_value >= val) |
| tab[look].gt_entry.gt_bytes += add; |
| |
| if (tab[look].gt_entry.gt_g_value == val) |
| exact = true; |
| } |
| |
| if (! exact) |
| { |
| Elf32_gptab *new_tab; |
| unsigned int max; |
| |
| /* We need a new table entry. */ |
| new_tab = ((Elf32_gptab *) |
| bfd_realloc ((PTR) tab, |
| (c + 1) * sizeof (Elf32_gptab))); |
| if (new_tab == NULL) |
| { |
| free (tab); |
| return false; |
| } |
| tab = new_tab; |
| tab[c].gt_entry.gt_g_value = val; |
| tab[c].gt_entry.gt_bytes = add; |
| |
| /* Merge in the size for the next smallest -G |
| value, since that will be implied by this new |
| value. */ |
| max = 0; |
| for (look = 1; look < c; look++) |
| { |
| if (tab[look].gt_entry.gt_g_value < val |
| && (max == 0 |
| || (tab[look].gt_entry.gt_g_value |
| > tab[max].gt_entry.gt_g_value))) |
| max = look; |
| } |
| if (max != 0) |
| tab[c].gt_entry.gt_bytes += |
| tab[max].gt_entry.gt_bytes; |
| |
| ++c; |
| } |
| |
| last = int_gptab.gt_entry.gt_bytes; |
| } |
| |
| /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| elf_link_input_bfd ignores this section. */ |
| input_section->flags &=~ SEC_HAS_CONTENTS; |
| } |
| |
| /* The table must be sorted by -G value. */ |
| if (c > 2) |
| qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); |
| |
| /* Swap out the table. */ |
| ext_tab = ((Elf32_External_gptab *) |
| bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); |
| if (ext_tab == NULL) |
| { |
| free (tab); |
| return false; |
| } |
| |
| for (i = 0; i < c; i++) |
| bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i); |
| free (tab); |
| |
| o->_raw_size = c * sizeof (Elf32_External_gptab); |
| o->contents = (bfd_byte *) ext_tab; |
| |
| /* Skip this section later on (I don't think this currently |
| matters, but someday it might). */ |
| o->link_order_head = (struct bfd_link_order *) NULL; |
| } |
| } |
| |
| /* Invoke the regular ELF backend linker to do all the work. */ |
| if (! bfd_elf32_bfd_final_link (abfd, info)) |
| return false; |
| |
| /* Now write out the computed sections. */ |
| |
| if (reginfo_sec != (asection *) NULL) |
| { |
| Elf32_External_RegInfo ext; |
| |
| bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); |
| if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, |
| (file_ptr) 0, sizeof ext)) |
| return false; |
| } |
| |
| if (mdebug_sec != (asection *) NULL) |
| { |
| BFD_ASSERT (abfd->output_has_begun); |
| if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, |
| swap, info, |
| mdebug_sec->filepos)) |
| return false; |
| |
| bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); |
| } |
| |
| if (gptab_data_sec != (asection *) NULL) |
| { |
| if (! bfd_set_section_contents (abfd, gptab_data_sec, |
| gptab_data_sec->contents, |
| (file_ptr) 0, |
| gptab_data_sec->_raw_size)) |
| return false; |
| } |
| |
| if (gptab_bss_sec != (asection *) NULL) |
| { |
| if (! bfd_set_section_contents (abfd, gptab_bss_sec, |
| gptab_bss_sec->contents, |
| (file_ptr) 0, |
| gptab_bss_sec->_raw_size)) |
| return false; |
| } |
| |
| if (SGI_COMPAT (abfd)) |
| { |
| rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); |
| if (rtproc_sec != NULL) |
| { |
| if (! bfd_set_section_contents (abfd, rtproc_sec, |
| rtproc_sec->contents, |
| (file_ptr) 0, |
| rtproc_sec->_raw_size)) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Handle a MIPS ELF HI16 reloc. */ |
| |
| static void |
| mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend) |
| bfd *input_bfd; |
| Elf_Internal_Rela *relhi; |
| Elf_Internal_Rela *rello; |
| bfd_byte *contents; |
| bfd_vma addend; |
| { |
| bfd_vma insn; |
| bfd_vma addlo; |
| |
| insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| |
| addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| addlo &= 0xffff; |
| |
| addend += ((insn & 0xffff) << 16) + addlo; |
| |
| if ((addlo & 0x8000) != 0) |
| addend -= 0x10000; |
| if ((addend & 0x8000) != 0) |
| addend += 0x10000; |
| |
| bfd_put_32 (input_bfd, |
| (insn & 0xffff0000) | ((addend >> 16) & 0xffff), |
| contents + relhi->r_offset); |
| } |
| |
| /* Handle a MIPS ELF local GOT16 reloc. */ |
| |
| static boolean |
| mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello, |
| contents, addend) |
| bfd *output_bfd; |
| bfd *input_bfd; |
| asection *sgot; |
| Elf_Internal_Rela *relhi; |
| Elf_Internal_Rela *rello; |
| bfd_byte *contents; |
| bfd_vma addend; |
| { |
| unsigned int assigned_gotno; |
| unsigned int i; |
| bfd_vma insn; |
| bfd_vma addlo; |
| bfd_vma address; |
| bfd_vma hipage; |
| bfd_byte *got_contents; |
| struct mips_got_info *g; |
| |
| insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| |
| addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| addlo &= 0xffff; |
| |
| addend += ((insn & 0xffff) << 16) + addlo; |
| |
| if ((addlo & 0x8000) != 0) |
| addend -= 0x10000; |
| if ((addend & 0x8000) != 0) |
| addend += 0x10000; |
| |
| /* Get a got entry representing requested hipage. */ |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| |
| assigned_gotno = g->assigned_gotno; |
| got_contents = sgot->contents; |
| hipage = addend & 0xffff0000; |
| |
| for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++) |
| { |
| address = bfd_get_32 (input_bfd, got_contents + i * 4); |
| if (hipage == (address & 0xffff0000)) |
| break; |
| } |
| |
| if (i == assigned_gotno) |
| { |
| if (assigned_gotno >= g->local_gotno) |
| { |
| (*_bfd_error_handler) |
| (_("more got entries are needed for hipage relocations")); |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| |
| bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4); |
| ++g->assigned_gotno; |
| } |
| |
| i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4; |
| bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff), |
| contents + relhi->r_offset); |
| |
| return true; |
| } |
| |
| /* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */ |
| |
| static void |
| mips_elf_relocate_global_got (input_bfd, rel, contents, offset) |
| bfd *input_bfd; |
| Elf_Internal_Rela *rel; |
| bfd_byte *contents; |
| bfd_vma offset; |
| { |
| bfd_vma insn; |
| |
| insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| bfd_put_32 (input_bfd, |
| (insn & 0xffff0000) | (offset & 0xffff), |
| contents + rel->r_offset); |
| } |
| |
| /* Relocate a MIPS ELF section. */ |
| |
| static boolean |
| mips_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| contents, relocs, local_syms, local_sections) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| bfd *input_bfd; |
| asection *input_section; |
| bfd_byte *contents; |
| Elf_Internal_Rela *relocs; |
| Elf_Internal_Sym *local_syms; |
| asection **local_sections; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| size_t locsymcount; |
| size_t extsymoff; |
| asection *sgot, *sreloc, *scpt; |
| bfd *dynobj; |
| bfd_vma gp; |
| Elf_Internal_Rela *rel; |
| Elf_Internal_Rela *relend; |
| struct mips_got_info *g; |
| |
| dynobj = elf_hash_table (info)->dynobj; |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| |
| sgot = NULL; |
| sreloc = NULL; |
| if (dynobj == NULL || ! SGI_COMPAT (output_bfd)) |
| scpt = NULL; |
| else |
| scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); |
| g = NULL; |
| |
| if (elf_bad_symtab (input_bfd)) |
| { |
| locsymcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
| extsymoff = 0; |
| } |
| else |
| { |
| locsymcount = symtab_hdr->sh_info; |
| extsymoff = symtab_hdr->sh_info; |
| } |
| |
| gp = _bfd_get_gp_value (output_bfd); |
| |
| rel = relocs; |
| relend = relocs + input_section->reloc_count; |
| for (; rel < relend; rel++) |
| { |
| int r_type; |
| reloc_howto_type *howto; |
| unsigned long r_symndx; |
| bfd_vma addend; |
| struct elf_link_hash_entry *h; |
| asection *sec; |
| Elf_Internal_Sym *sym; |
| struct mips_elf_link_hash_entry *mh; |
| int other; |
| bfd_reloc_status_type r; |
| |
| r_type = ELF32_R_TYPE (rel->r_info); |
| if (r_type == R_MIPS_GNU_VTINHERIT |
| || r_type == R_MIPS_GNU_VTENTRY) |
| continue; |
| if ((r_type < 0 || r_type >= (int) R_MIPS_max) |
| && r_type != R_MIPS16_26 |
| && r_type != R_MIPS16_GPREL) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| if (r_type == R_MIPS16_26) |
| howto = &elf_mips16_jump_howto; |
| else if (r_type == R_MIPS16_GPREL) |
| howto = &elf_mips16_gprel_howto; |
| else |
| howto = elf_mips_howto_table + r_type; |
| |
| if (dynobj != NULL |
| && (r_type == R_MIPS_CALL16 |
| || r_type == R_MIPS_GOT16 |
| || r_type == R_MIPS_CALL_HI16 |
| || r_type == R_MIPS_CALL_LO16 |
| || r_type == R_MIPS_GOT_HI16 |
| || r_type == R_MIPS_GOT_LO16)) |
| { |
| /* We need the .got section. */ |
| if (sgot == NULL) |
| { |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (sgot != NULL); |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| } |
| } |
| |
| r_symndx = ELF32_R_SYM (rel->r_info); |
| |
| /* Mix in the change in GP address for a GP relative reloc. */ |
| if (r_type != R_MIPS_GPREL16 |
| && r_type != R_MIPS_LITERAL |
| && r_type != R_MIPS_GPREL32 |
| && r_type != R_MIPS16_GPREL) |
| addend = 0; |
| else |
| { |
| if (gp == 0) |
| { |
| if (! ((*info->callbacks->reloc_dangerous) |
| (info, |
| _("GP relative relocation when GP not defined"), |
| input_bfd, input_section, |
| rel->r_offset))) |
| return false; |
| /* Only give the error once per link. */ |
| gp = 4; |
| _bfd_set_gp_value (output_bfd, gp); |
| } |
| |
| if (r_symndx < extsymoff |
| || (elf_bad_symtab (input_bfd) |
| && local_sections[r_symndx] != NULL)) |
| { |
| /* This is a relocation against a section. The current |
| addend in the instruction is the difference between |
| INPUT_SECTION->vma and the GP value of INPUT_BFD. We |
| must change this to be the difference between the |
| final definition (which will end up in RELOCATION) |
| and the GP value of OUTPUT_BFD (which is in GP). */ |
| addend = elf_gp (input_bfd) - gp; |
| } |
| else if (! info->relocateable) |
| { |
| /* We are doing a final link. The current addend in the |
| instruction is simply the desired offset into the |
| symbol (normally zero). We want the instruction to |
| hold the difference between the final definition of |
| the symbol (which will end up in RELOCATION) and the |
| GP value of OUTPUT_BFD (which is in GP). */ |
| addend = - gp; |
| } |
| else |
| { |
| /* We are generating relocateable output, and we aren't |
| going to define this symbol, so we just leave the |
| instruction alone. */ |
| addend = 0; |
| } |
| } |
| |
| h = NULL; |
| sym = NULL; |
| sec = NULL; |
| if (info->relocateable) |
| { |
| /* This is a relocateable link. We don't have to change |
| anything, unless the reloc is against a section symbol, |
| in which case we have to adjust according to where the |
| section symbol winds up in the output section. */ |
| if (r_symndx >= locsymcount |
| || (elf_bad_symtab (input_bfd) |
| && local_sections[r_symndx] == NULL)) |
| r = bfd_reloc_ok; |
| else |
| { |
| sym = local_syms + r_symndx; |
| if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| r = bfd_reloc_ok; |
| else |
| { |
| sec = local_sections[r_symndx]; |
| |
| /* It would be logical to add sym->st_value here, |
| but Irix 5 sometimes generates a garbage symbol |
| value. */ |
| addend += sec->output_offset; |
| |
| /* If this is HI16 or GOT16 with an associated LO16, |
| adjust the addend accordingly. Otherwise, just |
| relocate. */ |
| if (r_type == R_MIPS_64 && bfd_big_endian (input_bfd)) |
| r = _bfd_relocate_contents (howto, input_bfd, |
| addend, |
| contents + rel->r_offset + 4); |
| else if (r_type != R_MIPS_HI16 && r_type != R_MIPS_GOT16) |
| r = _bfd_relocate_contents (howto, input_bfd, |
| addend, |
| contents + rel->r_offset); |
| else |
| { |
| Elf_Internal_Rela *lorel; |
| |
| /* As a GNU extension, permit an arbitrary |
| number of R_MIPS_HI16 relocs before the |
| R_MIPS_LO16 reloc. This permits gcc to emit |
| the HI and LO relocs itself. */ |
| if (r_type == R_MIPS_GOT16) |
| lorel = rel + 1; |
| else |
| { |
| for (lorel = rel + 1; |
| (lorel < relend |
| && (ELF32_R_TYPE (lorel->r_info) |
| == R_MIPS_HI16)); |
| lorel++) |
| ; |
| } |
| if (lorel < relend |
| && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) |
| { |
| mips_elf_relocate_hi16 (input_bfd, rel, lorel, |
| contents, addend); |
| r = bfd_reloc_ok; |
| } |
| else |
| r = _bfd_relocate_contents (howto, input_bfd, |
| addend, |
| contents + rel->r_offset); |
| } |
| } |
| } |
| } |
| else |
| { |
| bfd_vma relocation; |
| boolean local; |
| boolean undefined_error; |
| |
| /* This is a final link. */ |
| undefined_error = false; |
| sym = NULL; |
| if (r_symndx < extsymoff |
| || (elf_bad_symtab (input_bfd) |
| && local_sections[r_symndx] != NULL)) |
| { |
| local = true; |
| sym = local_syms + r_symndx; |
| sec = local_sections[r_symndx]; |
| relocation = (sec->output_section->vma |
| + sec->output_offset); |
| |
| /* It would be logical to always add sym->st_value here, |
| but Irix 5 sometimes generates a garbage symbol |
| value. */ |
| if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| relocation += sym->st_value; |
| |
| /* mips16 text labels should be treated as odd. */ |
| if (sym->st_other == STO_MIPS16) |
| ++relocation; |
| } |
| else |
| { |
| long indx; |
| |
| local = false; |
| indx = r_symndx - extsymoff; |
| h = elf_sym_hashes (input_bfd)[indx]; |
| while (h->root.type == bfd_link_hash_indirect |
| || h->root.type == bfd_link_hash_warning) |
| h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| if (strcmp (h->root.root.string, "_gp_disp") == 0) |
| { |
| if (gp == 0) |
| { |
| if (! ((*info->callbacks->reloc_dangerous) |
| (info, |
| _("_gp_disp used when GP not defined"), |
| input_bfd, input_section, |
| rel->r_offset))) |
| return false; |
| /* Only give the error once per link. */ |
| gp = 4; |
| _bfd_set_gp_value (output_bfd, gp); |
| relocation = 0; |
| } |
| else |
| { |
| sec = input_section; |
| if (sec->output_section != NULL) |
| relocation = (gp |
| - (rel->r_offset |
| + sec->output_section->vma |
| + sec->output_offset)); |
| else |
| relocation = gp - rel->r_offset; |
| if (r_type == R_MIPS_LO16) |
| relocation += 4; |
| } |
| } |
| else if (h->root.type == bfd_link_hash_defined |
| || h->root.type == bfd_link_hash_defweak) |
| { |
| sec = h->root.u.def.section; |
| if (sec->output_section == NULL) |
| relocation = 0; |
| else |
| relocation = (h->root.u.def.value |
| + sec->output_section->vma |
| + sec->output_offset); |
| } |
| else if (h->root.type == bfd_link_hash_undefweak) |
| relocation = 0; |
| else if (info->shared && !info->symbolic && !info->no_undefined) |
| relocation = 0; |
| else if (strcmp (h->root.root.string, "_DYNAMIC_LINK") == 0) |
| { |
| /* If this is a dynamic link, we should have created |
| a _DYNAMIC_LINK symbol in |
| mips_elf_create_dynamic_sections. Otherwise, we |
| should define the symbol with a value of 0. |
| FIXME: It should probably get into the symbol |
| table somehow as well. */ |
| BFD_ASSERT (! info->shared); |
| BFD_ASSERT (bfd_get_section_by_name (output_bfd, |
| ".dynamic") == NULL); |
| relocation = 0; |
| } |
| else |
| { |
| if (! ((*info->callbacks->undefined_symbol) |
| (info, h->root.root.string, input_bfd, |
| input_section, rel->r_offset))) |
| return false; |
| undefined_error = true; |
| relocation = 0; |
| } |
| } |
| |
| mh = (struct mips_elf_link_hash_entry *) h; |
| if (h != NULL) |
| other = h->other; |
| else if (sym != NULL) |
| other = sym->st_other; |
| else |
| other = 0; |
| |
| /* If this function has an fn_stub, then it is a mips16 |
| function which needs a stub if it is called by a 32 bit |
| function. If this reloc is anything other than a 16 bit |
| call, redirect the reloc to the stub. We don't redirect |
| relocs from other stub functions. */ |
| if (r_type != R_MIPS16_26 |
| && ((mh != NULL |
| && mh->fn_stub != NULL) |
| || (mh == NULL |
| && elf_tdata (input_bfd)->local_stubs != NULL |
| && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
| && strncmp (bfd_get_section_name (input_bfd, input_section), |
| FN_STUB, sizeof FN_STUB - 1) != 0 |
| && strncmp (bfd_get_section_name (input_bfd, input_section), |
| CALL_STUB, sizeof CALL_STUB - 1) != 0 |
| && strncmp (bfd_get_section_name (input_bfd, input_section), |
| CALL_FP_STUB, sizeof CALL_FP_STUB - 1) != 0) |
| { |
| if (mh != NULL) |
| { |
| BFD_ASSERT (mh->need_fn_stub); |
| relocation = (mh->fn_stub->output_section->vma |
| + mh->fn_stub->output_offset); |
| } |
| else |
| { |
| asection *fn_stub; |
| |
| fn_stub = elf_tdata (input_bfd)->local_stubs[r_symndx]; |
| relocation = (fn_stub->output_section->vma |
| + fn_stub->output_offset); |
| } |
| |
| /* RELOCATION now points to 32 bit code. */ |
| other = 0; |
| } |
| |
| /* If this function has a call_stub, then it is called by a |
| mips16 function; the call needs to go through a stub if |
| this function is a 32 bit function. If this reloc is a |
| 16 bit call, and the symbol is not a 16 bit function, |
| then redirect the reloc to the stub. Note that we don't |
| need to worry about calling the function through a |
| function pointer; such calls are handled by routing |
| through a special mips16 routine. We don't have to check |
| whether this call is from a stub; it can't be, because a |
| stub contains 32 bit code, and hence can not have a 16 |
| bit reloc. */ |
| if (r_type == R_MIPS16_26 |
| && mh != NULL |
| && (mh->call_stub != NULL || mh->call_fp_stub != NULL) |
| && other != STO_MIPS16) |
| { |
| asection *stub; |
| |
| /* If both call_stub and call_fp_stub are defined, we |
| can figure out which one to use by seeing which one |
| appears in the input file. */ |
| if (mh->call_stub != NULL && mh->call_fp_stub != NULL) |
| { |
| asection *o; |
| |
| stub = NULL; |
| for (o = input_bfd->sections; o != NULL; o = o->next) |
| { |
| if (strncmp (bfd_get_section_name (input_bfd, o), |
| CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) |
| { |
| stub = mh->call_fp_stub; |
| break; |
| } |
| } |
| if (stub == NULL) |
| stub = mh->call_stub; |
| } |
| else if (mh->call_stub != NULL) |
| stub = mh->call_stub; |
| else |
| stub = mh->call_fp_stub; |
| |
| BFD_ASSERT (stub->_raw_size > 0); |
| relocation = stub->output_section->vma + stub->output_offset; |
| } |
| |
| if (r_type == R_MIPS_HI16) |
| { |
| Elf_Internal_Rela *lorel; |
| |
| /* As a GNU extension, permit an arbitrary number of |
| R_MIPS_HI16 relocs before the R_MIPS_LO16 reloc. |
| This permits gcc to emit the HI and LO relocs itself. */ |
| for (lorel = rel + 1; |
| (lorel < relend |
| && ELF32_R_TYPE (lorel->r_info) == R_MIPS_HI16); |
| lorel++) |
| ; |
| if (lorel < relend |
| && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) |
| { |
| mips_elf_relocate_hi16 (input_bfd, rel, lorel, |
| contents, relocation + addend); |
| r = bfd_reloc_ok; |
| } |
| else |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, |
| relocation, addend); |
| } |
| else if (r_type == R_MIPS_GOT16 && local) |
| { |
| /* GOT16 must also have an associated LO16 in the local |
| case. In this case, the addend is extracted and the |
| section in which the referenced object is determined. |
| Then the final address of the object is computed and |
| the GOT entry for the hipage (an aligned 64kb chunk) |
| is added to .got section if needed. The offset field |
| of the GOT16-relocated instruction is replaced by the |
| index of this GOT entry for the hipage. */ |
| if ((rel + 1) < relend |
| && ELF32_R_TYPE ((rel + 1)->r_info) == R_MIPS_LO16) |
| { |
| if (! mips_elf_relocate_got_local (output_bfd, input_bfd, |
| sgot, rel, rel + 1, |
| contents, |
| relocation + addend)) |
| return false; |
| r = bfd_reloc_ok; |
| } |
| else |
| r = bfd_reloc_outofrange; |
| } |
| else if (r_type == R_MIPS_CALL16 |
| || r_type == R_MIPS_GOT16 |
| || r_type == R_MIPS_CALL_LO16 |
| || r_type == R_MIPS_GOT_LO16) |
| { |
| bfd_vma offset; |
| |
| /* This symbol must be registered as a global symbol |
| having the corresponding got entry. */ |
| BFD_ASSERT (h->got.offset != (bfd_vma) -1); |
| |
| offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; |
| BFD_ASSERT (g->local_gotno <= offset |
| && offset < sgot->_raw_size); |
| bfd_put_32 (output_bfd, relocation + addend, |
| sgot->contents + offset); |
| offset = (sgot->output_section->vma + sgot->output_offset |
| + offset - gp); |
| mips_elf_relocate_global_got (input_bfd, rel, contents, |
| offset); |
| r = bfd_reloc_ok; |
| } |
| else if (r_type == R_MIPS_CALL_HI16 |
| || r_type == R_MIPS_GOT_HI16) |
| { |
| bfd_vma offset; |
| |
| /* This must be a global symbol with a got entry. The |
| next reloc must be the corresponding LO16 reloc. */ |
| BFD_ASSERT (h != NULL && h->got.offset != (bfd_vma) -1); |
| BFD_ASSERT ((rel + 1) < relend); |
| BFD_ASSERT ((int) ELF32_R_TYPE ((rel + 1)->r_info) |
| == (r_type == R_MIPS_CALL_HI16 |
| ? (int) R_MIPS_CALL_LO16 |
| : (int) R_MIPS_GOT_LO16)); |
| |
| offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; |
| BFD_ASSERT (g->local_gotno <= offset |
| && offset < sgot->_raw_size); |
| bfd_put_32 (output_bfd, relocation + addend, |
| sgot->contents + offset); |
| offset = (sgot->output_section->vma + sgot->output_offset |
| + offset - gp); |
| mips_elf_relocate_hi16 (input_bfd, rel, rel + 1, contents, |
| offset); |
| r = bfd_reloc_ok; |
| } |
| else if (r_type == R_MIPS_REL32 |
| || r_type == R_MIPS_32) |
| { |
| Elf_Internal_Rel outrel; |
| Elf32_crinfo cptrel; |
| bfd_byte *cr; |
| |
| if ((info->shared |
| || (elf_hash_table (info)->dynamic_sections_created |
| && h != NULL |
| && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) |
| == 0))) |
| && (input_section->flags & SEC_ALLOC) != 0) |
| { |
| boolean skip; |
| |
| /* When generating a shared object, these |
| relocations are copied into the output file to be |
| resolved at run time. */ |
| if (sreloc == NULL) |
| { |
| sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); |
| BFD_ASSERT (sreloc != NULL); |
| } |
| |
| skip = false; |
| |
| if (elf_section_data (input_section)->stab_info == NULL) |
| outrel.r_offset = rel->r_offset; |
| else |
| { |
| bfd_vma off; |
| |
| off = (_bfd_stab_section_offset |
| (output_bfd, &elf_hash_table (info)->stab_info, |
| input_section, |
| &elf_section_data (input_section)->stab_info, |
| rel->r_offset)); |
| if (off == (bfd_vma) -1) |
| skip = true; |
| outrel.r_offset = off; |
| } |
| |
| outrel.r_offset += (input_section->output_section->vma |
| + input_section->output_offset); |
| |
| addend = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| |
| if (skip) |
| memset (&outrel, 0, sizeof outrel); |
| else if (h != NULL |
| && (! info->symbolic |
| || (h->elf_link_hash_flags |
| & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| { |
| BFD_ASSERT (h->dynindx != -1); |
| outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_REL32); |
| sec = input_section; |
| } |
| else |
| { |
| long indx; |
| |
| if (h == NULL) |
| sec = local_sections[r_symndx]; |
| else |
| { |
| BFD_ASSERT (h->root.type == bfd_link_hash_defined |
| || (h->root.type |
| == bfd_link_hash_defweak)); |
| sec = h->root.u.def.section; |
| } |
| if (sec != NULL && bfd_is_abs_section (sec)) |
| indx = 0; |
| else if (sec == NULL || sec->owner == NULL) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| else |
| { |
| asection *osec; |
| |
| osec = sec->output_section; |
| indx = elf_section_data (osec)->dynindx; |
| if (indx == 0) |
| abort (); |
| } |
| |
| outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32); |
| addend += relocation; |
| } |
| |
| if (! skip) |
| bfd_put_32 (output_bfd, addend, contents + rel->r_offset); |
| |
| bfd_elf32_swap_reloc_out (output_bfd, &outrel, |
| (((Elf32_External_Rel *) |
| sreloc->contents) |
| + sreloc->reloc_count)); |
| ++sreloc->reloc_count; |
| |
| if (! skip && SGI_COMPAT (output_bfd)) |
| { |
| if (scpt == NULL) |
| continue; |
| |
| /* Make an entry of compact relocation info. */ |
| mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); |
| cptrel.vaddr = (rel->r_offset |
| + input_section->output_section->vma |
| + input_section->output_offset); |
| if (r_type == R_MIPS_REL32) |
| mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); |
| else |
| mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); |
| mips_elf_set_cr_dist2to (cptrel, 0); |
| cptrel.konst = addend; |
| |
| cr = (scpt->contents |
| + sizeof (Elf32_External_compact_rel)); |
| bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
| ((Elf32_External_crinfo *) cr |
| + scpt->reloc_count)); |
| ++scpt->reloc_count; |
| } |
| |
| /* This reloc will be computed at runtime, so |
| there's no need to do anything now. */ |
| continue; |
| } |
| else |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, |
| relocation, addend); |
| } |
| else if (r_type == R_MIPS_64) |
| { |
| bfd_size_type addr; |
| unsigned long val; |
| |
| /* Do a 32 bit relocation, and sign extend to 64 bits. */ |
| addr = rel->r_offset; |
| if (bfd_big_endian (input_bfd)) |
| addr += 4; |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, addr, relocation, |
| addend); |
| val = bfd_get_32 (input_bfd, contents + addr); |
| if ((val & 0x80000000) != 0) |
| val = 0xffffffff; |
| else |
| val = 0; |
| addr = rel->r_offset; |
| if (bfd_little_endian (input_bfd)) |
| addr += 4; |
| bfd_put_32 (input_bfd, val, contents + addr); |
| } |
| else if (r_type == R_MIPS_26 && other == STO_MIPS16) |
| { |
| unsigned long insn; |
| |
| /* This is a jump to a mips16 routine from a mips32 |
| routine. We need to change jal into jalx. */ |
| insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| if (((insn >> 26) & 0x3f) != 0x3 |
| && ((insn >> 26) & 0x3f) != 0x1d) |
| { |
| (*_bfd_error_handler) |
| (_("%s: %s+0x%lx: jump to mips16 routine which is not jal"), |
| bfd_get_filename (input_bfd), |
| input_section->name, |
| (unsigned long) rel->r_offset); |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| insn = (insn & 0x3ffffff) | (0x1d << 26); |
| bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, |
| relocation, addend); |
| } |
| else if (r_type == R_MIPS16_26) |
| { |
| /* It's easiest to do the normal relocation, and then |
| dig out the instruction and swap the first word the |
| way the mips16 expects it. If this is little endian, |
| though, we need to swap the two words first, and then |
| swap them back again later, so that the address looks |
| right. */ |
| |
| if (bfd_little_endian (input_bfd)) |
| { |
| unsigned long insn; |
| |
| insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16); |
| bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| } |
| |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, |
| relocation, addend); |
| if (r == bfd_reloc_ok) |
| { |
| unsigned long insn; |
| |
| if (bfd_little_endian (input_bfd)) |
| { |
| insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16); |
| bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| } |
| |
| insn = bfd_get_16 (input_bfd, contents + rel->r_offset); |
| insn = ((insn & 0xfc00) |
| | ((insn & 0x1f) << 5) |
| | ((insn & 0x3e0) >> 5)); |
| /* If this is a jump to a 32 bit routine, then make |
| it jalx. */ |
| if (other != STO_MIPS16) |
| insn |= 0x400; |
| bfd_put_16 (input_bfd, insn, contents + rel->r_offset); |
| } |
| } |
| else if (r_type == R_MIPS16_GPREL) |
| { |
| unsigned short extend, insn; |
| bfd_byte buf[4]; |
| unsigned long final; |
| |
| /* Extract the addend into buf, run the regular reloc, |
| and stuff the resulting value back into the |
| instructions. */ |
| if (rel->r_offset > input_section->_raw_size) |
| r = bfd_reloc_outofrange; |
| else |
| { |
| extend = bfd_get_16 (input_bfd, contents + rel->r_offset); |
| insn = bfd_get_16 (input_bfd, contents + rel->r_offset + 2); |
| bfd_put_32 (input_bfd, |
| (((extend & 0x1f) << 11) |
| | (extend & 0x7e0) |
| | (insn & 0x1f)), |
| buf); |
| r = _bfd_final_link_relocate (howto, input_bfd, |
| input_section, buf, |
| (bfd_vma) 0, relocation, |
| addend); |
| final = bfd_get_32 (input_bfd, buf); |
| bfd_put_16 (input_bfd, |
| ((extend & 0xf800) |
| | ((final >> 11) & 0x1f) |
| | (final & 0x7e0)), |
| contents + rel->r_offset); |
| bfd_put_16 (input_bfd, |
| ((insn & 0xffe0) |
| | (final & 0x1f)), |
| contents + rel->r_offset + 2); |
| } |
| } |
| else |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, |
| relocation, addend); |
| |
| /* The jal instruction can only jump to an address which is |
| divisible by 4, and it can only jump to an address with |
| the same upper 4 bits as the PC. */ |
| if (r == bfd_reloc_ok |
| && (r_type == R_MIPS16_26 || r_type == R_MIPS_26)) |
| { |
| bfd_vma addr; |
| bfd_vma pc; |
| bfd_vma target; |
| |
| pc = ((input_section->output_section->vma |
| + input_section->output_offset |
| + rel->r_offset) |
| & 0xf0000000); |
| target = bfd_get_32 (input_bfd, contents + rel->r_offset) |
| & (howto->dst_mask); |
| addr = (target << 2) + pc; |
| if (other == STO_MIPS16) |
| addr &= ~ (bfd_vma) 1; |
| if ((addr & 3) != 0 |
| || ((addr & 0xf0000000) |
| != pc)) |
| r = bfd_reloc_overflow; |
| } |
| |
| /* Don't bother to report a relocation overflow for a call |
| to a weak undefined symbol with a value of zero. This |
| permits us to use |
| if (!f) f(); |
| even if we aren't in range to call address zero. */ |
| if (r == bfd_reloc_overflow |
| && (r_type == R_MIPS16_26 || r_type == R_MIPS_26) |
| && relocation + addend == 0 |
| && h != NULL |
| && h->root.type == bfd_link_hash_undefweak) |
| r = bfd_reloc_ok; |
| |
| /* If we've already issued an error for an undefined symbol, |
| don't issue another useless error. */ |
| if (undefined_error |
| && (r == bfd_reloc_undefined || r == bfd_reloc_overflow)) |
| r = bfd_reloc_ok; |
| |
| if (SGI_COMPAT (abfd) |
| && scpt != NULL |
| && (input_section->flags & SEC_ALLOC) != 0) |
| { |
| Elf32_crinfo cptrel; |
| bfd_byte *cr; |
| |
| /* Make an entry of compact relocation info. */ |
| mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); |
| cptrel.vaddr = (rel->r_offset |
| + input_section->output_section->vma |
| + input_section->output_offset); |
| |
| switch (r_type) |
| { |
| case R_MIPS_26: |
| mips_elf_set_cr_type (cptrel, CRT_MIPS_JMPAD); |
| /* XXX How should we set dist2to in this case. */ |
| mips_elf_set_cr_dist2to (cptrel, 8); |
| cptrel.konst = addend + relocation; |
| cr = scpt->contents + sizeof (Elf32_External_compact_rel); |
| bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
| ((Elf32_External_crinfo *) cr |
| + scpt->reloc_count)); |
| ++scpt->reloc_count; |
| break; |
| |
| case R_MIPS_GPREL16: |
| case R_MIPS_LITERAL: |
| case R_MIPS_GPREL32: |
| mips_elf_set_cr_type (cptrel, CRT_MIPS_GPHI_LO); |
| cptrel.konst = gp - cptrel.vaddr; |
| mips_elf_set_cr_dist2to (cptrel, 4); |
| cr = scpt->contents + sizeof (Elf32_External_compact_rel); |
| bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
| ((Elf32_External_crinfo *) cr |
| + scpt->reloc_count)); |
| ++scpt->reloc_count; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| if (r != bfd_reloc_ok) |
| { |
| switch (r) |
| { |
| default: |
| case bfd_reloc_outofrange: |
| abort (); |
| case bfd_reloc_overflow: |
| { |
| const char *name; |
| |
| if (h != NULL) |
| name = h->root.root.string; |
| else |
| { |
| name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| sym->st_name); |
| if (name == NULL) |
| return false; |
| if (*name == '\0') |
| name = bfd_section_name (input_bfd, sec); |
| } |
| if (! ((*info->callbacks->reloc_overflow) |
| (info, name, howto->name, (bfd_vma) 0, |
| input_bfd, input_section, rel->r_offset))) |
| return false; |
| } |
| break; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| /* This hook function is called before the linker writes out a global |
| symbol. We mark symbols as small common if appropriate. This is |
| also where we undo the increment of the value for a mips16 symbol. */ |
| |
| /*ARGSIGNORED*/ |
| static boolean |
| mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| const char *name; |
| Elf_Internal_Sym *sym; |
| asection *input_sec; |
| { |
| /* If we see a common symbol, which implies a relocatable link, then |
| if a symbol was small common in an input file, mark it as small |
| common in the output file. */ |
| if (sym->st_shndx == SHN_COMMON |
| && strcmp (input_sec->name, ".scommon") == 0) |
| sym->st_shndx = SHN_MIPS_SCOMMON; |
| |
| if (sym->st_other == STO_MIPS16 |
| && (sym->st_value & 1) != 0) |
| --sym->st_value; |
| |
| return true; |
| } |
| |
| /* Functions for the dynamic linker. */ |
| |
| /* The name of the dynamic interpreter. This is put in the .interp |
| section. */ |
| |
| #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" |
| |
| /* Create dynamic sections when linking against a dynamic object. */ |
| |
| static boolean |
| mips_elf_create_dynamic_sections (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| struct elf_link_hash_entry *h; |
| flagword flags; |
| register asection *s; |
| const char * const *namep; |
| |
| flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| | SEC_LINKER_CREATED | SEC_READONLY); |
| |
| /* Mips ABI requests the .dynamic section to be read only. */ |
| s = bfd_get_section_by_name (abfd, ".dynamic"); |
| if (s != NULL) |
| { |
| if (! bfd_set_section_flags (abfd, s, flags)) |
| return false; |
| } |
| |
| /* We need to create .got section. */ |
| if (! mips_elf_create_got_section (abfd, info)) |
| return false; |
| |
| /* Create .stub section. */ |
| if (bfd_get_section_by_name (abfd, ".stub") == NULL) |
| { |
| s = bfd_make_section (abfd, ".stub"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return false; |
| } |
| |
| if (SGI_COMPAT (abfd) |
| && !info->shared |
| && bfd_get_section_by_name (abfd, ".rld_map") == NULL) |
| { |
| s = bfd_make_section (abfd, ".rld_map"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return false; |
| } |
| |
| if (SGI_COMPAT (abfd)) |
| { |
| for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) |
| { |
| h = NULL; |
| if (! (_bfd_generic_link_add_one_symbol |
| (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, |
| (bfd_vma) 0, (const char *) NULL, false, |
| get_elf_backend_data (abfd)->collect, |
| (struct bfd_link_hash_entry **) &h))) |
| return false; |
| h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
| h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| h->type = STT_SECTION; |
| |
| if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| } |
| |
| /* We need to create a .compact_rel section. */ |
| if (! mips_elf_create_compact_rel_section (abfd, info)) |
| return false; |
| |
| /* Change aligments of some sections. */ |
| s = bfd_get_section_by_name (abfd, ".hash"); |
| if (s != NULL) |
| bfd_set_section_alignment (abfd, s, 4); |
| s = bfd_get_section_by_name (abfd, ".dynsym"); |
| if (s != NULL) |
| bfd_set_section_alignment (abfd, s, 4); |
| s = bfd_get_section_by_name (abfd, ".dynstr"); |
| if (s != NULL) |
| bfd_set_section_alignment (abfd, s, 4); |
| s = bfd_get_section_by_name (abfd, ".reginfo"); |
| if (s != NULL) |
| bfd_set_section_alignment (abfd, s, 4); |
| s = bfd_get_section_by_name (abfd, ".dynamic"); |
| if (s != NULL) |
| bfd_set_section_alignment (abfd, s, 4); |
| } |
| |
| if (!info->shared) |
| { |
| h = NULL; |
| if (! (_bfd_generic_link_add_one_symbol |
| (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr, |
| (bfd_vma) 0, (const char *) NULL, false, |
| get_elf_backend_data (abfd)->collect, |
| (struct bfd_link_hash_entry **) &h))) |
| return false; |
| h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
| h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| h->type = STT_SECTION; |
| |
| if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| |
| if (! mips_elf_hash_table (info)->use_rld_obj_head) |
| { |
| /* __rld_map is a four byte word located in the .data section |
| and is filled in by the rtld to contain a pointer to |
| the _r_debug structure. Its symbol value will be set in |
| mips_elf_finish_dynamic_symbol. */ |
| s = bfd_get_section_by_name (abfd, ".rld_map"); |
| BFD_ASSERT (s != NULL); |
| |
| h = NULL; |
| if (! (_bfd_generic_link_add_one_symbol |
| (info, abfd, "__rld_map", BSF_GLOBAL, s, |
| (bfd_vma) 0, (const char *) NULL, false, |
| get_elf_backend_data (abfd)->collect, |
| (struct bfd_link_hash_entry **) &h))) |
| return false; |
| h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
| h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| h->type = STT_OBJECT; |
| |
| if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Create the .compact_rel section. */ |
| |
| static boolean |
| mips_elf_create_compact_rel_section (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| flagword flags; |
| register asection *s; |
| |
| if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) |
| { |
| flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED |
| | SEC_READONLY); |
| |
| s = bfd_make_section (abfd, ".compact_rel"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return false; |
| |
| s->_raw_size = sizeof (Elf32_External_compact_rel); |
| } |
| |
| return true; |
| } |
| |
| /* Create the .got section to hold the global offset table. */ |
| |
| static boolean |
| mips_elf_create_got_section (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| flagword flags; |
| register asection *s; |
| struct elf_link_hash_entry *h; |
| struct mips_got_info *g; |
| |
| /* This function may be called more than once. */ |
| if (bfd_get_section_by_name (abfd, ".got") != NULL) |
| return true; |
| |
| flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| | SEC_LINKER_CREATED); |
| |
| s = bfd_make_section (abfd, ".got"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags) |
| || ! bfd_set_section_alignment (abfd, s, 4)) |
| return false; |
| |
| /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the |
| linker script because we don't want to define the symbol if we |
| are not creating a global offset table. */ |
| h = NULL; |
| if (! (_bfd_generic_link_add_one_symbol |
| (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, |
| (bfd_vma) 0, (const char *) NULL, false, |
| get_elf_backend_data (abfd)->collect, |
| (struct bfd_link_hash_entry **) &h))) |
| return false; |
| h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
| h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| h->type = STT_OBJECT; |
| |
| if (info->shared |
| && ! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| |
| /* The first several global offset table entries are reserved. */ |
| s->_raw_size = MIPS_RESERVED_GOTNO * 4; |
| |
| g = (struct mips_got_info *) bfd_alloc (abfd, |
| sizeof (struct mips_got_info)); |
| if (g == NULL) |
| return false; |
| g->global_gotsym = 0; |
| g->local_gotno = MIPS_RESERVED_GOTNO; |
| g->assigned_gotno = MIPS_RESERVED_GOTNO; |
| if (elf_section_data (s) == NULL) |
| { |
| s->used_by_bfd = |
| (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); |
| if (elf_section_data (s) == NULL) |
| return false; |
| } |
| elf_section_data (s)->tdata = (PTR) g; |
| |
| return true; |
| } |
| |
| /* Look through the relocs for a section during the first phase, and |
| allocate space in the global offset table. */ |
| |
| static boolean |
| mips_elf_check_relocs (abfd, info, sec, relocs) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| asection *sec; |
| const Elf_Internal_Rela *relocs; |
| { |
| const char *name; |
| bfd *dynobj; |
| Elf_Internal_Shdr *symtab_hdr; |
| struct elf_link_hash_entry **sym_hashes; |
| struct mips_got_info *g; |
| size_t extsymoff; |
| const Elf_Internal_Rela *rel; |
| const Elf_Internal_Rela *rel_end; |
| asection *sgot; |
| asection *sreloc; |
| |
| if (info->relocateable) |
| return true; |
| |
| dynobj = elf_hash_table (info)->dynobj; |
| symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| sym_hashes = elf_sym_hashes (abfd); |
| extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; |
| |
| /* Check for the mips16 stub sections. */ |
| |
| name = bfd_get_section_name (abfd, sec); |
| if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) |
| { |
| unsigned long r_symndx; |
| |
| /* Look at the relocation information to figure out which symbol |
| this is for. */ |
| |
| r_symndx = ELF32_R_SYM (relocs->r_info); |
| |
| if (r_symndx < extsymoff |
| || sym_hashes[r_symndx - extsymoff] == NULL) |
| { |
| asection *o; |
| |
| /* This stub is for a local symbol. This stub will only be |
| needed if there is some relocation in this BFD, other |
| than a 16 bit function call, which refers to this symbol. */ |
| for (o = abfd->sections; o != NULL; o = o->next) |
| { |
| Elf_Internal_Rela *sec_relocs; |
| const Elf_Internal_Rela *r, *rend; |
| |
| /* We can ignore stub sections when looking for relocs. */ |
| if ((o->flags & SEC_RELOC) == 0 |
| || o->reloc_count == 0 |
| || strncmp (bfd_get_section_name (abfd, o), FN_STUB, |
| sizeof FN_STUB - 1) == 0 |
| || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, |
| sizeof CALL_STUB - 1) == 0 |
| || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, |
| sizeof CALL_FP_STUB - 1) == 0) |
| continue; |
| |
| sec_relocs = (_bfd_elf32_link_read_relocs |
| (abfd, o, (PTR) NULL, |
| (Elf_Internal_Rela *) NULL, |
| info->keep_memory)); |
| if (sec_relocs == NULL) |
| return false; |
| |
| rend = sec_relocs + o->reloc_count; |
| for (r = sec_relocs; r < rend; r++) |
| if (ELF32_R_SYM (r->r_info) == r_symndx |
| && ELF32_R_TYPE (r->r_info) != R_MIPS16_26) |
| break; |
| |
| if (! info->keep_memory) |
| free (sec_relocs); |
| |
| if (r < rend) |
| break; |
| } |
| |
| if (o == NULL) |
| { |
| /* There is no non-call reloc for this stub, so we do |
| not need it. Since this function is called before |
| the linker maps input sections to output sections, we |
| can easily discard it by setting the SEC_EXCLUDE |
| flag. */ |
| sec->flags |= SEC_EXCLUDE; |
| return true; |
| } |
| |
| /* Record this stub in an array of local symbol stubs for |
| this BFD. */ |
| if (elf_tdata (abfd)->local_stubs == NULL) |
| { |
| unsigned long symcount; |
| asection **n; |
| |
| if (elf_bad_symtab (abfd)) |
| symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
| else |
| symcount = symtab_hdr->sh_info; |
| n = (asection **) bfd_zalloc (abfd, |
| symcount * sizeof (asection *)); |
| if (n == NULL) |
| return false; |
| elf_tdata (abfd)->local_stubs = n; |
| } |
| |
| elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
| |
| /* We don't need to set mips16_stubs_seen in this case. |
| That flag is used to see whether we need to look through |
| the global symbol table for stubs. We don't need to set |
| it here, because we just have a local stub. */ |
| } |
| else |
| { |
| struct mips_elf_link_hash_entry *h; |
| |
| h = ((struct mips_elf_link_hash_entry *) |
| sym_hashes[r_symndx - extsymoff]); |
| |
| /* H is the symbol this stub is for. */ |
| |
| h->fn_stub = sec; |
| mips_elf_hash_table (info)->mips16_stubs_seen = true; |
| } |
| } |
| else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 |
| || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) |
| { |
| unsigned long r_symndx; |
| struct mips_elf_link_hash_entry *h; |
| asection **loc; |
| |
| /* Look at the relocation information to figure out which symbol |
| this is for. */ |
| |
| r_symndx = ELF32_R_SYM (relocs->r_info); |
| |
| if (r_symndx < extsymoff |
| || sym_hashes[r_symndx - extsymoff] == NULL) |
| { |
| /* This stub was actually built for a static symbol defined |
| in the same file. We assume that all static symbols in |
| mips16 code are themselves mips16, so we can simply |
| discard this stub. Since this function is called before |
| the linker maps input sections to output sections, we can |
| easily discard it by setting the SEC_EXCLUDE flag. */ |
| sec->flags |= SEC_EXCLUDE; |
| return true; |
| } |
| |
| h = ((struct mips_elf_link_hash_entry *) |
| sym_hashes[r_symndx - extsymoff]); |
| |
| /* H is the symbol this stub is for. */ |
| |
| if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) |
| loc = &h->call_fp_stub; |
| else |
| loc = &h->call_stub; |
| |
| /* If we already have an appropriate stub for this function, we |
| don't need another one, so we can discard this one. Since |
| this function is called before the linker maps input sections |
| to output sections, we can easily discard it by setting the |
| SEC_EXCLUDE flag. We can also discard this section if we |
| happen to already know that this is a mips16 function; it is |
| not necessary to check this here, as it is checked later, but |
| it is slightly faster to check now. */ |
| if (*loc != NULL || h->root.other == STO_MIPS16) |
| { |
| sec->flags |= SEC_EXCLUDE; |
| return true; |
| } |
| |
| *loc = sec; |
| mips_elf_hash_table (info)->mips16_stubs_seen = true; |
| } |
| |
| if (dynobj == NULL) |
| { |
| sgot = NULL; |
| g = NULL; |
| } |
| else |
| { |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| if (sgot == NULL) |
| g = NULL; |
| else |
| { |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| } |
| } |
| |
| sreloc = NULL; |
| |
| rel_end = relocs + sec->reloc_count; |
| for (rel = relocs; rel < rel_end; rel++) |
| { |
| unsigned long r_symndx; |
| struct elf_link_hash_entry *h; |
| |
| r_symndx = ELF32_R_SYM (rel->r_info); |
| |
| if (r_symndx < extsymoff) |
| h = NULL; |
| else |
| { |
| h = sym_hashes[r_symndx - extsymoff]; |
| |
| /* This may be an indirect symbol created because of a version. */ |
| if (h != NULL) |
| { |
| while (h->root.type == bfd_link_hash_indirect) |
| h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| } |
| } |
| |
| /* Some relocs require a global offset table. */ |
| if (dynobj == NULL || sgot == NULL) |
| { |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| case R_MIPS_GOT16: |
| case R_MIPS_CALL16: |
| case R_MIPS_CALL_HI16: |
| case R_MIPS_CALL_LO16: |
| case R_MIPS_GOT_HI16: |
| case R_MIPS_GOT_LO16: |
| if (dynobj == NULL) |
| elf_hash_table (info)->dynobj = dynobj = abfd; |
| if (! mips_elf_create_got_section (dynobj, info)) |
| return false; |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (sgot != NULL); |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| break; |
| |
| case R_MIPS_32: |
| case R_MIPS_REL32: |
| if (dynobj == NULL |
| && (info->shared || h != NULL) |
| && (sec->flags & SEC_ALLOC) != 0) |
| elf_hash_table (info)->dynobj = dynobj = abfd; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| case R_MIPS_CALL16: |
| case R_MIPS_CALL_HI16: |
| case R_MIPS_CALL_LO16: |
| /* This symbol requires a global offset table entry. */ |
| |
| if (h == NULL) |
| { |
| (*_bfd_error_handler) |
| (_("%s: CALL16 reloc at 0x%lx not against global symbol"), |
| bfd_get_filename (abfd), (unsigned long) rel->r_offset); |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| |
| /* Make sure this symbol is output as a dynamic symbol. */ |
| if (h->dynindx == -1) |
| { |
| if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| } |
| |
| if (h->got.offset != (bfd_vma) -1) |
| { |
| /* We have already allocated space in the .got. */ |
| break; |
| } |
| |
| /* Note the index of the first global got symbol in .dynsym. */ |
| if (g->global_gotsym == 0 |
| || g->global_gotsym > (unsigned long) h->dynindx) |
| g->global_gotsym = h->dynindx; |
| |
| /* Make this symbol to have the corresponding got entry. */ |
| h->got.offset = 0; |
| |
| /* We need a stub, not a plt entry for the undefined |
| function. But we record it as if it needs plt. See |
| elf_adjust_dynamic_symbol in elflink.h. */ |
| h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| h->type = STT_FUNC; |
| |
| break; |
| |
| case R_MIPS_GOT16: |
| case R_MIPS_GOT_HI16: |
| case R_MIPS_GOT_LO16: |
| /* This symbol requires a global offset table entry. */ |
| |
| if (h != NULL) |
| { |
| /* Make sure this symbol is output as a dynamic symbol. */ |
| if (h->dynindx == -1) |
| { |
| if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| return false; |
| } |
| |
| if (h->got.offset != (bfd_vma) -1) |
| { |
| /* We have already allocated space in the .got. */ |
| break; |
| } |
| /* Note the index of the first global got symbol in |
| .dynsym. */ |
| if (g->global_gotsym == 0 |
| || g->global_gotsym > (unsigned long) h->dynindx) |
| g->global_gotsym = h->dynindx; |
| |
| /* Make this symbol to be the global got symbol. */ |
| h->got.offset = 0; |
| } |
| |
| break; |
| |
| case R_MIPS_32: |
| case R_MIPS_REL32: |
| if ((info->shared || h != NULL) |
| && (sec->flags & SEC_ALLOC) != 0) |
| { |
| if (sreloc == NULL) |
| { |
| const char *name = ".rel.dyn"; |
| |
| sreloc = bfd_get_section_by_name (dynobj, name); |
| if (sreloc == NULL) |
| { |
| sreloc = bfd_make_section (dynobj, name); |
| if (sreloc == NULL |
| || ! bfd_set_section_flags (dynobj, sreloc, |
| (SEC_ALLOC |
| | SEC_LOAD |
| | SEC_HAS_CONTENTS |
| | SEC_IN_MEMORY |
| | SEC_LINKER_CREATED |
| | SEC_READONLY)) |
| || ! bfd_set_section_alignment (dynobj, sreloc, |
| 4)) |
| return false; |
| } |
| } |
| if (info->shared) |
| { |
| /* When creating a shared object, we must copy these |
| reloc types into the output file as R_MIPS_REL32 |
| relocs. We make room for this reloc in the |
| .rel.dyn reloc section */ |
| if (sreloc->_raw_size == 0) |
| { |
| /* Add a null element. */ |
| sreloc->_raw_size += sizeof (Elf32_External_Rel); |
| ++sreloc->reloc_count; |
| } |
| sreloc->_raw_size += sizeof (Elf32_External_Rel); |
| } |
| else |
| { |
| struct mips_elf_link_hash_entry *hmips; |
| |
| /* We only need to copy this reloc if the symbol is |
| defined in a dynamic object. */ |
| hmips = (struct mips_elf_link_hash_entry *) h; |
| ++hmips->mips_32_relocs; |
| } |
| } |
| |
| if (SGI_COMPAT (abfd)) |
| mips_elf_hash_table (info)->compact_rel_size += |
| sizeof (Elf32_External_crinfo); |
| |
| break; |
| |
| case R_MIPS_26: |
| case R_MIPS_GPREL16: |
| case R_MIPS_LITERAL: |
| case R_MIPS_GPREL32: |
| if (SGI_COMPAT (abfd)) |
| mips_elf_hash_table (info)->compact_rel_size += |
| sizeof (Elf32_External_crinfo); |
| break; |
| |
| /* This relocation describes the C++ object vtable hierarchy. |
| Reconstruct it for later use during GC. */ |
| case R_MIPS_GNU_VTINHERIT: |
| if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| return false; |
| break; |
| |
| /* This relocation describes which C++ vtable entries are actually |
| used. Record for later use during GC. */ |
| case R_MIPS_GNU_VTENTRY: |
| if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
| return false; |
| break; |
| |
| default: |
| break; |
| } |
| |
| /* If this reloc is not a 16 bit call, and it has a global |
| symbol, then we will need the fn_stub if there is one. |
| References from a stub section do not count. */ |
| if (h != NULL |
| && ELF32_R_TYPE (rel->r_info) != R_MIPS16_26 |
| && strncmp (bfd_get_section_name (abfd, sec), FN_STUB, |
| sizeof FN_STUB - 1) != 0 |
| && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB, |
| sizeof CALL_STUB - 1) != 0 |
| && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB, |
| sizeof CALL_FP_STUB - 1) != 0) |
| { |
| struct mips_elf_link_hash_entry *mh; |
| |
| mh = (struct mips_elf_link_hash_entry *) h; |
| mh->need_fn_stub = true; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Return the section that should be marked against GC for a given |
| relocation. */ |
| |
| static asection * |
| mips_elf_gc_mark_hook (abfd, info, rel, h, sym) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| Elf_Internal_Rela *rel; |
| struct elf_link_hash_entry *h; |
| Elf_Internal_Sym *sym; |
| { |
| /* ??? Do mips16 stub sections need to be handled special? */ |
| |
| if (h != NULL) |
| { |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| case R_MIPS_GNU_VTINHERIT: |
| case R_MIPS_GNU_VTENTRY: |
| break; |
| |
| default: |
| switch (h->root.type) |
| { |
| case bfd_link_hash_defined: |
| case bfd_link_hash_defweak: |
| return h->root.u.def.section; |
| |
| case bfd_link_hash_common: |
| return h->root.u.c.p->section; |
| |
| default: |
| break; |
| } |
| } |
| } |
| else |
| { |
| if (!(elf_bad_symtab (abfd) |
| && ELF_ST_BIND (sym->st_info) != STB_LOCAL) |
| && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) |
| && sym->st_shndx != SHN_COMMON)) |
| { |
| return bfd_section_from_elf_index (abfd, sym->st_shndx); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| /* Update the got entry reference counts for the section being removed. */ |
| |
| static boolean |
| mips_elf_gc_sweep_hook (abfd, info, sec, relocs) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| asection *sec; |
| const Elf_Internal_Rela *relocs; |
| { |
| #if 0 |
| Elf_Internal_Shdr *symtab_hdr; |
| struct elf_link_hash_entry **sym_hashes; |
| bfd_signed_vma *local_got_refcounts; |
| const Elf_Internal_Rela *rel, *relend; |
| unsigned long r_symndx; |
| struct elf_link_hash_entry *h; |
| |
| symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| sym_hashes = elf_sym_hashes (abfd); |
| local_got_refcounts = elf_local_got_refcounts (abfd); |
| |
| relend = relocs + sec->reloc_count; |
| for (rel = relocs; rel < relend; rel++) |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| case R_MIPS_GOT16: |
| case R_MIPS_CALL16: |
| case R_MIPS_CALL_HI16: |
| case R_MIPS_CALL_LO16: |
| case R_MIPS_GOT_HI16: |
| case R_MIPS_GOT_LO16: |
| /* ??? It would seem that the existing MIPS code does no sort |
| of reference counting or whatnot on its GOT and PLT entries, |
| so it is not possible to garbage collect them at this time. */ |
| break; |
| |
| default: |
| break; |
| } |
| #endif |
| |
| return true; |
| } |
| |
| |
| /* Adjust a symbol defined by a dynamic object and referenced by a |
| regular object. The current definition is in some section of the |
| dynamic object, but we're not including those sections. We have to |
| change the definition to something the rest of the link can |
| understand. */ |
| |
| static boolean |
| mips_elf_adjust_dynamic_symbol (info, h) |
| struct bfd_link_info *info; |
| struct elf_link_hash_entry *h; |
| { |
| bfd *dynobj; |
| struct mips_elf_link_hash_entry *hmips; |
| asection *s; |
| |
| dynobj = elf_hash_table (info)->dynobj; |
| |
| /* Make sure we know what is going on here. */ |
| BFD_ASSERT (dynobj != NULL |
| && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| || h->weakdef != NULL |
| || ((h->elf_link_hash_flags |
| & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| && (h->elf_link_hash_flags |
| & ELF_LINK_HASH_REF_REGULAR) != 0 |
| && (h->elf_link_hash_flags |
| & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| |
| /* If this symbol is defined in a dynamic object, we need to copy |
| any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output |
| file. */ |
| hmips = (struct mips_elf_link_hash_entry *) h; |
| if (! info->relocateable |
| && hmips->mips_32_relocs != 0 |
| && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| { |
| s = bfd_get_section_by_name (dynobj, ".rel.dyn"); |
| BFD_ASSERT (s != NULL); |
| |
| if (s->_raw_size == 0) |
| { |
| /* Make room for a null element. */ |
| s->_raw_size += sizeof (Elf32_External_Rel); |
| ++s->reloc_count; |
| } |
| s->_raw_size += hmips->mips_32_relocs * sizeof (Elf32_External_Rel); |
| } |
| |
| /* For a function, create a stub, if needed. */ |
| if (h->type == STT_FUNC |
| || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
| { |
| if (! elf_hash_table (info)->dynamic_sections_created) |
| return true; |
| |
| /* If this symbol is not defined in a regular file, then set |
| the symbol to the stub location. This is required to make |
| function pointers compare as equal between the normal |
| executable and the shared library. */ |
| if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| { |
| /* We need .stub section. */ |
| s = bfd_get_section_by_name (dynobj, ".stub"); |
| BFD_ASSERT (s != NULL); |
| |
| h->root.u.def.section = s; |
| h->root.u.def.value = s->_raw_size; |
| |
| /* XXX Write this stub address somewhere. */ |
| h->plt.offset = s->_raw_size; |
| |
| /* Make room for this stub code. */ |
| s->_raw_size += MIPS_FUNCTION_STUB_SIZE; |
| |
| /* The last half word of the stub will be filled with the index |
| of this symbol in .dynsym section. */ |
| return true; |
| } |
| } |
| |
| /* If this is a weak symbol, and there is a real definition, the |
| processor independent code will have arranged for us to see the |
| real definition first, and we can just use the same value. */ |
| if (h->weakdef != NULL) |
| { |
| BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| || h->weakdef->root.type == bfd_link_hash_defweak); |
| h->root.u.def.section = h->weakdef->root.u.def.section; |
| h->root.u.def.value = h->weakdef->root.u.def.value; |
| return true; |
| } |
| |
| /* This is a reference to a symbol defined by a dynamic object which |
| is not a function. */ |
| |
| return true; |
| } |
| |
| /* This function is called after all the input files have been read, |
| and the input sections have been assigned to output sections. We |
| check for any mips16 stub sections that we can discard. */ |
| |
| static boolean mips_elf_check_mips16_stubs |
| PARAMS ((struct mips_elf_link_hash_entry *, PTR)); |
| |
| static boolean |
| mips_elf_always_size_sections (output_bfd, info) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| { |
| asection *ri; |
| |
| /* The .reginfo section has a fixed size. */ |
| ri = bfd_get_section_by_name (output_bfd, ".reginfo"); |
| if (ri != NULL) |
| bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
| |
| if (info->relocateable |
| || ! mips_elf_hash_table (info)->mips16_stubs_seen) |
| return true; |
| |
| mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
| mips_elf_check_mips16_stubs, |
| (PTR) NULL); |
| |
| return true; |
| } |
| |
| /* Check the mips16 stubs for a particular symbol, and see if we can |
| discard them. */ |
| |
| /*ARGSUSED*/ |
| static boolean |
| mips_elf_check_mips16_stubs (h, data) |
| struct mips_elf_link_hash_entry *h; |
| PTR data; |
| { |
| if (h->fn_stub != NULL |
| && ! h->need_fn_stub) |
| { |
| /* We don't need the fn_stub; the only references to this symbol |
| are 16 bit calls. Clobber the size to 0 to prevent it from |
| being included in the link. */ |
| h->fn_stub->_raw_size = 0; |
| h->fn_stub->_cooked_size = 0; |
| h->fn_stub->flags &= ~ SEC_RELOC; |
| h->fn_stub->reloc_count = 0; |
| h->fn_stub->flags |= SEC_EXCLUDE; |
| } |
| |
| if (h->call_stub != NULL |
| && h->root.other == STO_MIPS16) |
| { |
| /* We don't need the call_stub; this is a 16 bit function, so |
| calls from other 16 bit functions are OK. Clobber the size |
| to 0 to prevent it from being included in the link. */ |
| h->call_stub->_raw_size = 0; |
| h->call_stub->_cooked_size = 0; |
| h->call_stub->flags &= ~ SEC_RELOC; |
| h->call_stub->reloc_count = 0; |
| h->call_stub->flags |= SEC_EXCLUDE; |
| } |
| |
| if (h->call_fp_stub != NULL |
| && h->root.other == STO_MIPS16) |
| { |
| /* We don't need the call_stub; this is a 16 bit function, so |
| calls from other 16 bit functions are OK. Clobber the size |
| to 0 to prevent it from being included in the link. */ |
| h->call_fp_stub->_raw_size = 0; |
| h->call_fp_stub->_cooked_size = 0; |
| h->call_fp_stub->flags &= ~ SEC_RELOC; |
| h->call_fp_stub->reloc_count = 0; |
| h->call_fp_stub->flags |= SEC_EXCLUDE; |
| } |
| |
| return true; |
| } |
| |
| /* Set the sizes of the dynamic sections. */ |
| |
| static boolean |
| mips_elf_size_dynamic_sections (output_bfd, info) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| { |
| bfd *dynobj; |
| asection *s; |
| boolean reltext; |
| asection *sgot; |
| struct mips_got_info *g; |
| |
| dynobj = elf_hash_table (info)->dynobj; |
| BFD_ASSERT (dynobj != NULL); |
| |
| if (elf_hash_table (info)->dynamic_sections_created) |
| { |
| /* Set the contents of the .interp section to the interpreter. */ |
| if (! info->shared) |
| { |
| s = bfd_get_section_by_name (dynobj, ".interp"); |
| BFD_ASSERT (s != NULL); |
| s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| } |
| } |
| |
| /* Recompute the size of .got for local entires (reserved and |
| hipages) if needed. To estimate it, get the upper bound of total |
| size of loadable sections. */ |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| |
| if (sgot != NULL) |
| { |
| bfd_size_type loadable_size = 0; |
| bfd_size_type local_gotno; |
| struct _bfd *sub; |
| |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| |
| for (sub = info->input_bfds; sub; sub = sub->link_next) |
| for (s = sub->sections; s != NULL; s = s->next) |
| { |
| if ((s->flags & SEC_ALLOC) == 0) |
| continue; |
| loadable_size += (s->_raw_size + 0xf) & ~0xf; |
| } |
| |
| loadable_size += MIPS_FUNCTION_STUB_SIZE; |
| |
| /* Assume there are two loadable segments consisting of |
| contiguous sections. Is 5 enough? */ |
| local_gotno = (loadable_size >> 16) + 5 + MIPS_RESERVED_GOTNO; |
| g->local_gotno = local_gotno; |
| sgot->_raw_size += local_gotno * 4; |
| } |
| |
| /* The check_relocs and adjust_dynamic_symbol entry points have |
| determined the sizes of the various dynamic sections. Allocate |
| memory for them. */ |
| reltext = false; |
| for (s = dynobj->sections; s != NULL; s = s->next) |
| { |
| const char *name; |
| boolean strip; |
| |
| /* It's OK to base decisions on the section name, because none |
| of the dynobj section names depend upon the input files. */ |
| name = bfd_get_section_name (dynobj, s); |
| |
| if ((s->flags & SEC_LINKER_CREATED) == 0) |
| continue; |
| |
| strip = false; |
| |
| if (strncmp (name, ".rel", 4) == 0) |
| { |
| if (s->_raw_size == 0) |
| { |
| /* We only strip the section if the output section name |
| has the same name. Otherwise, there might be several |
| input sections for this output section. FIXME: This |
| code is probably not needed these days anyhow, since |
| the linker now does not create empty output sections. */ |
| if (s->output_section != NULL |
| && strcmp (name, |
| bfd_get_section_name (s->output_section->owner, |
| s->output_section)) == 0) |
| strip = true; |
| } |
| else |
| { |
| const char *outname; |
| asection *target; |
| |
| /* If this relocation section applies to a read only |
| section, then we probably need a DT_TEXTREL entry. |
| If the relocation section is .rel.dyn, we always |
| assert a DT_TEXTREL entry rather than testing whether |
| there exists a relocation to a read only section or |
| not. */ |
| outname = bfd_get_section_name (output_bfd, |
| s->output_section); |
| target = bfd_get_section_by_name (output_bfd, outname + 4); |
| if ((target != NULL |
| && (target->flags & SEC_READONLY) != 0 |
| && (target->flags & SEC_ALLOC) != 0) |
| || strcmp (outname, ".rel.dyn") == 0) |
| reltext = true; |
| |
| /* We use the reloc_count field as a counter if we need |
| to copy relocs into the output file. */ |
| if (strcmp (name, ".rel.dyn") != 0) |
| s->reloc_count = 0; |
| } |
| } |
| else if (strncmp (name, ".got", 4) == 0) |
| { |
| int i; |
| |
| BFD_ASSERT (elf_section_data (s) != NULL); |
| g = (struct mips_got_info *) elf_section_data (s)->tdata; |
| BFD_ASSERT (g != NULL); |
| |
| /* Fix the size of .got section for the correspondence of |
| global symbols and got entries. This adds some useless |
| got entries. Is this required by ABI really? */ |
| i = elf_hash_table (info)->dynsymcount - g->global_gotsym; |
| s->_raw_size += i * 4; |
| } |
| else if (strncmp (name, ".stub", 5) == 0) |
| { |
| /* Irix rld assumes that the function stub isn't at the end |
| of .text section. So put a dummy. XXX */ |
| s->_raw_size += MIPS_FUNCTION_STUB_SIZE; |
| } |
| else if (! info->shared |
| && ! mips_elf_hash_table (info)->use_rld_obj_head |
| && strncmp (name, ".rld_map", 8) == 0) |
| { |
| /* We add a room for __rld_map. It will be filled in by the |
| rtld to contain a pointer to the _r_debug structure. */ |
| s->_raw_size += 4; |
| } |
| else if (SGI_COMPAT (output_bfd) |
| && strncmp (name, ".compact_rel", 12) == 0) |
| s->_raw_size += mips_elf_hash_table (info)->compact_rel_size; |
| else if (strncmp (name, ".init", 5) != 0) |
| { |
| /* It's not one of our sections, so don't allocate space. */ |
| continue; |
| } |
| |
| if (strip) |
| { |
| _bfd_strip_section_from_output (s); |
| continue; |
| } |
| |
| /* Allocate memory for the section contents. */ |
| s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); |
| if (s->contents == NULL && s->_raw_size != 0) |
| { |
| bfd_set_error (bfd_error_no_memory); |
| return false; |
| } |
| memset (s->contents, 0, s->_raw_size); |
| } |
| |
| if (elf_hash_table (info)->dynamic_sections_created) |
| { |
| /* Add some entries to the .dynamic section. We fill in the |
| values later, in elf_mips_finish_dynamic_sections, but we |
| must add the entries now so that we get the correct size for |
| the .dynamic section. The DT_DEBUG entry is filled in by the |
| dynamic linker and used by the debugger. */ |
| if (! info->shared) |
| { |
| if (SGI_COMPAT (output_bfd)) |
| { |
| /* SGI object has the equivalence of DT_DEBUG in the |
| DT_MIPS_RLD_MAP entry. */ |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) |
| return false; |
| } |
| else |
| if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) |
| return false; |
| } |
| |
| if (reltext) |
| { |
| if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) |
| return false; |
| } |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) |
| return false; |
| |
| if (bfd_get_section_by_name (dynobj, ".rel.dyn")) |
| { |
| if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_RELENT, 0)) |
| return false; |
| } |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) |
| return false; |
| |
| if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) |
| { |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) |
| return false; |
| |
| s = bfd_get_section_by_name (dynobj, ".liblist"); |
| BFD_ASSERT (s != NULL); |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) |
| return false; |
| } |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) |
| return false; |
| |
| #if 0 |
| /* Time stamps in executable files are a bad idea. */ |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) |
| return false; |
| #endif |
| |
| #if 0 /* FIXME */ |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) |
| return false; |
| #endif |
| |
| #if 0 /* FIXME */ |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) |
| return false; |
| #endif |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) |
| return false; |
| |
| if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_HIPAGENO, 0)) |
| return false; |
| |
| #if 0 /* (SGI_COMPAT) */ |
| if (! bfd_get_section_by_name (dynobj, ".init")) |
| if (! bfd_elf32_add_dynamic_entry (info, DT_INIT, 0)) |
| return false; |
| |
| if (! bfd_get_section_by_name (dynobj, ".fini")) |
| if (! bfd_elf32_add_dynamic_entry (info, DT_FINI, 0)) |
| return false; |
| #endif |
| } |
| |
| /* If we use dynamic linking, we generate a section symbol for each |
| output section. These are local symbols, which means that they |
| must come first in the dynamic symbol table. |
| That means we must increment the dynamic symbol index of every |
| other dynamic symbol. */ |
| { |
| unsigned int c, i; |
| struct mips_got_info *g; |
| |
| c = 0; |
| if (elf_hash_table (info)->dynamic_sections_created) |
| { |
| #if 0 |
| /* We no longer try to restrict the set of sections which get |
| dynamic symbol table entries, since it fails if we have |
| other random sections which need dynamic relocations. */ |
| const char * const *namep; |
| bfd_size_type strindex; |
| struct bfd_strtab_hash *dynstr; |
| |
| if (SGI_COMPAT (output_bfd)) |
| { |
| c = SIZEOF_MIPS_DYNSYM_SECNAMES - 1; |
| elf_link_hash_traverse (elf_hash_table (info), |
| mips_elf_adjust_dynindx, |
| (PTR) &c); |
| elf_hash_table (info)->dynsymcount += c; |
| |
| dynstr = elf_hash_table (info)->dynstr; |
| BFD_ASSERT (dynstr != NULL); |
| |
| for (i = 1, namep = mips_elf_dynsym_sec_names; |
| *namep != NULL; |
| i++, namep++) |
| { |
| s = bfd_get_section_by_name (output_bfd, *namep); |
| if (s != NULL) |
| elf_section_data (s)->dynindx = i; |
| |
| strindex = _bfd_stringtab_add (dynstr, *namep, true, false); |
| if (strindex == (bfd_size_type) -1) |
| return false; |
| |
| mips_elf_hash_table (info)->dynsym_sec_strindex[i] = strindex; |
| } |
| } |
| else |
| #endif /* 0 */ |
| { |
| c = bfd_count_sections (output_bfd); |
| elf_link_hash_traverse (elf_hash_table (info), |
| mips_elf_adjust_dynindx, |
| (PTR) &c); |
| elf_hash_table (info)->dynsymcount += c; |
| |
| for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) |
| { |
| elf_section_data (s)->dynindx = i; |
| /* These symbols will have no names, so we don't need to |
| fiddle with dynstr_index. */ |
| } |
| } |
| } |
| |
| if (sgot != NULL) |
| { |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| |
| /* If there are no global got symbols, fake the last symbol so |
| for safety. */ |
| if (g->global_gotsym) |
| g->global_gotsym += c; |
| else |
| g->global_gotsym = elf_hash_table (info)->dynsymcount - 1; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Increment the index of a dynamic symbol by a given amount. Called |
| via elf_link_hash_traverse. */ |
| |
| static boolean |
| mips_elf_adjust_dynindx (h, cparg) |
| struct elf_link_hash_entry *h; |
| PTR cparg; |
| { |
| unsigned int *cp = (unsigned int *) cparg; |
| |
| if (h->dynindx != -1) |
| h->dynindx += *cp; |
| return true; |
| } |
| |
| /* Finish up dynamic symbol handling. We set the contents of various |
| dynamic sections here. */ |
| |
| static boolean |
| mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| struct elf_link_hash_entry *h; |
| Elf_Internal_Sym *sym; |
| { |
| bfd *dynobj; |
| bfd_vma gval; |
| asection *sgot; |
| struct mips_got_info *g; |
| const char *name; |
| |
| dynobj = elf_hash_table (info)->dynobj; |
| gval = sym->st_value; |
| |
| if (h->plt.offset != (bfd_vma) -1) |
| { |
| asection *s; |
| bfd_byte *p; |
| bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; |
| |
| /* This symbol has a stub. Set it up. */ |
| |
| BFD_ASSERT (h->dynindx != -1); |
| |
| s = bfd_get_section_by_name (dynobj, ".stub"); |
| BFD_ASSERT (s != NULL); |
| |
| /* Fill the stub. */ |
| p = stub; |
| bfd_put_32 (output_bfd, STUB_LW(output_bfd), p); |
| p += 4; |
| bfd_put_32 (output_bfd, STUB_MOVE, p); |
| p += 4; |
| |
| /* FIXME: Can h->dynindex be more than 64K? */ |
| if (h->dynindx & 0xffff0000) |
| return false; |
| |
| bfd_put_32 (output_bfd, STUB_JALR, p); |
| p += 4; |
| bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p); |
| |
| BFD_ASSERT (h->plt.offset <= s->_raw_size); |
| memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); |
| |
| /* Mark the symbol as undefined. plt.offset != -1 occurs |
| only for the referenced symbol. */ |
| sym->st_shndx = SHN_UNDEF; |
| |
| /* The run-time linker uses the st_value field of the symbol |
| to reset the global offset table entry for this external |
| to its stub address when unlinking a shared object. */ |
| gval = s->output_section->vma + s->output_offset + h->plt.offset; |
| sym->st_value = gval; |
| } |
| |
| BFD_ASSERT (h->dynindx != -1); |
| |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (sgot != NULL); |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| |
| if ((unsigned long) h->dynindx >= g->global_gotsym) |
| { |
| bfd_size_type offset; |
| |
| /* This symbol has an entry in the global offset table. Set its |
| value to the corresponding got entry, if needed. */ |
| if (h->got.offset == (bfd_vma) -1) |
| { |
| offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; |
| BFD_ASSERT (g->local_gotno * 4 <= offset |
| && offset < sgot->_raw_size); |
| bfd_put_32 (output_bfd, gval, sgot->contents + offset); |
| } |
| } |
| |
| /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
| name = h->root.root.string; |
| if (strcmp (name, "_DYNAMIC") == 0 |
| || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) |
| sym->st_shndx = SHN_ABS; |
| else if (strcmp (name, "_DYNAMIC_LINK") == 0) |
| { |
| sym->st_shndx = SHN_ABS; |
| sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); |
| sym->st_value = 1; |
| } |
| else if (SGI_COMPAT (output_bfd)) |
| { |
| if (strcmp (name, "_gp_disp") == 0) |
| { |
| sym->st_shndx = SHN_ABS; |
| sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); |
| sym->st_value = elf_gp (output_bfd); |
| } |
| else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 |
| || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) |
| { |
| sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); |
| sym->st_other = STO_PROTECTED; |
| sym->st_value = 0; |
| sym->st_shndx = SHN_MIPS_DATA; |
| } |
| else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) |
| { |
| sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); |
| sym->st_other = STO_PROTECTED; |
| sym->st_value = mips_elf_hash_table (info)->procedure_count; |
| sym->st_shndx = SHN_ABS; |
| } |
| else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) |
| { |
| if (h->type == STT_FUNC) |
| sym->st_shndx = SHN_MIPS_TEXT; |
| else if (h->type == STT_OBJECT) |
| sym->st_shndx = SHN_MIPS_DATA; |
| } |
| } |
| |
| if (SGI_COMPAT (output_bfd) |
| && ! info->shared) |
| { |
| if (! mips_elf_hash_table (info)->use_rld_obj_head |
| && strcmp (name, "__rld_map") == 0) |
| { |
| asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); |
| BFD_ASSERT (s != NULL); |
| sym->st_value = s->output_section->vma + s->output_offset; |
| bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents); |
| if (mips_elf_hash_table (info)->rld_value == 0) |
| mips_elf_hash_table (info)->rld_value = sym->st_value; |
| } |
| else if (mips_elf_hash_table (info)->use_rld_obj_head |
| && strcmp (name, "__rld_obj_head") == 0) |
| { |
| asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); |
| BFD_ASSERT (s != NULL); |
| mips_elf_hash_table (info)->rld_value = sym->st_value; |
| } |
| } |
| |
| /* If this is a mips16 symbol, force the value to be even. */ |
| if (sym->st_other == STO_MIPS16 |
| && (sym->st_value & 1) != 0) |
| --sym->st_value; |
| |
| return true; |
| } |
| |
| /* Finish up the dynamic sections. */ |
| |
| static boolean |
| mips_elf_finish_dynamic_sections (output_bfd, info) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| { |
| bfd *dynobj; |
| asection *sdyn; |
| asection *sgot; |
| struct mips_got_info *g; |
| |
| dynobj = elf_hash_table (info)->dynobj; |
| |
| sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| if (sgot == NULL) |
| g = NULL; |
| else |
| { |
| BFD_ASSERT (elf_section_data (sgot) != NULL); |
| g = (struct mips_got_info *) elf_section_data (sgot)->tdata; |
| BFD_ASSERT (g != NULL); |
| } |
| |
| if (elf_hash_table (info)->dynamic_sections_created) |
| { |
| Elf32_External_Dyn *dyncon, *dynconend; |
| |
| BFD_ASSERT (sdyn != NULL); |
| BFD_ASSERT (g != NULL); |
| |
| dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| for (; dyncon < dynconend; dyncon++) |
| { |
| Elf_Internal_Dyn dyn; |
| const char *name; |
| size_t elemsize; |
| asection *s; |
| |
| bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| |
| switch (dyn.d_tag) |
| { |
| default: |
| break; |
| |
| case DT_RELENT: |
| s = bfd_get_section_by_name (dynobj, ".rel.dyn"); |
| BFD_ASSERT (s != NULL); |
| dyn.d_un.d_val = sizeof (Elf32_External_Rel); |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_STRSZ: |
| /* Rewrite DT_STRSZ. */ |
| dyn.d_un.d_val = |
| _bfd_stringtab_size (elf_hash_table (info)->dynstr); |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_PLTGOT: |
| name = ".got"; |
| goto get_vma; |
| case DT_MIPS_CONFLICT: |
| name = ".conflict"; |
| goto get_vma; |
| case DT_MIPS_LIBLIST: |
| name = ".liblist"; |
| get_vma: |
| s = bfd_get_section_by_name (output_bfd, name); |
| BFD_ASSERT (s != NULL); |
| dyn.d_un.d_ptr = s->vma; |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_RLD_VERSION: |
| dyn.d_un.d_val = 1; /* XXX */ |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_FLAGS: |
| dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_CONFLICTNO: |
| name = ".conflict"; |
| elemsize = sizeof (Elf32_Conflict); |
| goto set_elemno; |
| |
| case DT_MIPS_LIBLISTNO: |
| name = ".liblist"; |
| elemsize = sizeof (Elf32_Lib); |
| set_elemno: |
| s = bfd_get_section_by_name (output_bfd, name); |
| if (s != NULL) |
| { |
| if (s->_cooked_size != 0) |
| dyn.d_un.d_val = s->_cooked_size / elemsize; |
| else |
| dyn.d_un.d_val = s->_raw_size / elemsize; |
| } |
| else |
| dyn.d_un.d_val = 0; |
| |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_TIME_STAMP: |
| time ((time_t *) &dyn.d_un.d_val); |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_ICHECKSUM: |
| /* XXX FIXME: */ |
| break; |
| |
| case DT_MIPS_IVERSION: |
| /* XXX FIXME: */ |
| break; |
| |
| case DT_MIPS_BASE_ADDRESS: |
| s = output_bfd->sections; |
| BFD_ASSERT (s != NULL); |
| dyn.d_un.d_ptr = s->vma & ~(0xffff); |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_LOCAL_GOTNO: |
| dyn.d_un.d_val = g->local_gotno; |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_SYMTABNO: |
| name = ".dynsym"; |
| elemsize = sizeof (Elf32_External_Sym); |
| s = bfd_get_section_by_name (output_bfd, name); |
| BFD_ASSERT (s != NULL); |
| |
| if (s->_cooked_size != 0) |
| dyn.d_un.d_val = s->_cooked_size / elemsize; |
| else |
| dyn.d_un.d_val = s->_raw_size / elemsize; |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_UNREFEXTNO: |
| #if 0 |
| dyn.d_un.d_val = SIZEOF_MIPS_DYNSYM_SECNAMES; |
| #else |
| dyn.d_un.d_val = bfd_count_sections (output_bfd); |
| #endif |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_GOTSYM: |
| dyn.d_un.d_val = g->global_gotsym; |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_HIPAGENO: |
| dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| case DT_MIPS_RLD_MAP: |
| dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; |
| bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| break; |
| |
| } |
| } |
| } |
| |
| /* The first entry of the global offset table will be filled at |
| runtime. The second entry will be used by some runtime loaders. |
| This isn't the case of Irix rld. */ |
| if (sgot != NULL && sgot->_raw_size > 0) |
| { |
| bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 4); |
| } |
| |
| if (sgot != NULL) |
| elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| |
| { |
| asection *sdynsym; |
| asection *s; |
| Elf_Internal_Sym sym; |
| Elf32_compact_rel cpt; |
| |
| /* Set up the section symbols for the output sections. SGI sets |
| the STT_NOTYPE attribute for these symbols. Should we do so? */ |
| |
| sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); |
| if (sdynsym != NULL) |
| { |
| #if 0 |
| const char *name; |
| const char * const * namep = mips_elf_dynsym_sec_names; |
| unsigned int i; |
| bfd_vma last; |
| long dindx; |
| |
| /* We no longer try to restrict the set of sections which get |
| dynamic symbol table entries, since it fails if we have |
| other random sections which need dynamic relocations. */ |
| if (SGI_COMPAT (output_bfd)) |
| { |
| sym.st_size = 0; |
| sym.st_name = 0; |
| sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); |
| sym.st_other = 0; |
| |
| i = 0; |
| last = 0; |
| dindx = 0; |
| while ((name = *namep++) != NULL) |
| { |
| s = bfd_get_section_by_name (output_bfd, name); |
| if (s != NULL) |
| { |
| sym.st_value = s->vma; |
| dindx = elf_section_data (s)->dynindx; |
| last = s->vma + s->_raw_size; |
| } |
| else |
| { |
| sym.st_value = last; |
| dindx++; |
| } |
| |
| sym.st_shndx = (i < MIPS_TEXT_DYNSYM_SECNO |
| ? SHN_MIPS_TEXT |
| : SHN_MIPS_DATA); |
| ++i; |
| sym.st_name = |
| mips_elf_hash_table (info)->dynsym_sec_strindex[dindx]; |
| |
| bfd_elf32_swap_symbol_out (output_bfd, &sym, |
| (((Elf32_External_Sym *) |
| sdynsym->contents) |
| + dindx)); |
| } |
| |
| /* Set the sh_info field of the output .dynsym section to |
| the index of the first global symbol. */ |
| elf_section_data (sdynsym->output_section)->this_hdr.sh_info = |
| SIZEOF_MIPS_DYNSYM_SECNAMES; |
| } |
| else |
| #endif /* 0 */ |
| { |
| sym.st_size = 0; |
| sym.st_name = 0; |
| sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); |
| sym.st_other = 0; |
| |
| for (s = output_bfd->sections; s != NULL; s = s->next) |
| { |
| int indx; |
| |
| sym.st_value = s->vma; |
| |
| indx = elf_section_data (s)->this_idx; |
| BFD_ASSERT (indx > 0); |
| sym.st_shndx = indx; |
| |
| bfd_elf32_swap_symbol_out (output_bfd, &sym, |
| (((Elf32_External_Sym *) |
| sdynsym->contents) |
| + elf_section_data (s)->dynindx)); |
| } |
| |
| /* Set the sh_info field of the output .dynsym section to |
| the index of the first global symbol. */ |
| elf_section_data (sdynsym->output_section)->this_hdr.sh_info = |
| bfd_count_sections (output_bfd) + 1; |
| } |
| } |
| |
| if (SGI_COMPAT (output_bfd)) |
| { |
| /* Write .compact_rel section out. */ |
| s = bfd_get_section_by_name (dynobj, ".compact_rel"); |
| if (s != NULL) |
| { |
| cpt.id1 = 1; |
| cpt.num = s->reloc_count; |
| cpt.id2 = 2; |
| cpt.offset = (s->output_section->filepos |
| + sizeof (Elf32_External_compact_rel)); |
| cpt.reserved0 = 0; |
| cpt.reserved1 = 0; |
| bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, |
| ((Elf32_External_compact_rel *) |
| s->contents)); |
| |
| /* Clean up a dummy stub function entry in .text. */ |
| s = bfd_get_section_by_name (dynobj, ".stub"); |
| if (s != NULL) |
| { |
| file_ptr dummy_offset; |
| |
| BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE); |
| dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE; |
| memset (s->contents + dummy_offset, 0, |
| MIPS_FUNCTION_STUB_SIZE); |
| } |
| } |
| } |
| |
| /* Clean up a first relocation in .rel.dyn. */ |
| s = bfd_get_section_by_name (dynobj, ".rel.dyn"); |
| if (s != NULL && s->_raw_size > 0) |
| memset (s->contents, 0, sizeof (Elf32_External_Rel)); |
| } |
| |
| return true; |
| } |
| |
| /* This is almost identical to bfd_generic_get_... except that some |
| MIPS relocations need to be handled specially. Sigh. */ |
| |
| static bfd_byte * |
| elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data, |
| relocateable, symbols) |
| bfd *abfd; |
| struct bfd_link_info *link_info; |
| struct bfd_link_order *link_order; |
| bfd_byte *data; |
| boolean relocateable; |
| asymbol **symbols; |
| { |
| /* Get enough memory to hold the stuff */ |
| bfd *input_bfd = link_order->u.indirect.section->owner; |
| asection *input_section = link_order->u.indirect.section; |
| |
| long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); |
| arelent **reloc_vector = NULL; |
| long reloc_count; |
| |
| if (reloc_size < 0) |
| goto error_return; |
| |
| reloc_vector = (arelent **) bfd_malloc (reloc_size); |
| if (reloc_vector == NULL && reloc_size != 0) |
| goto error_return; |
| |
| /* read in the section */ |
| if (!bfd_get_section_contents (input_bfd, |
| input_section, |
| (PTR) data, |
| 0, |
| input_section->_raw_size)) |
| goto error_return; |
| |
| /* We're not relaxing the section, so just copy the size info */ |
| input_section->_cooked_size = input_section->_raw_size; |
| input_section->reloc_done = true; |
| |
| reloc_count = bfd_canonicalize_reloc (input_bfd, |
| input_section, |
| reloc_vector, |
| symbols); |
| if (reloc_count < 0) |
| goto error_return; |
| |
| if (reloc_count > 0) |
| { |
| arelent **parent; |
| /* for mips */ |
| int gp_found; |
| bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ |
| |
| { |
| struct bfd_hash_entry *h; |
| struct bfd_link_hash_entry *lh; |
| /* Skip all this stuff if we aren't mixing formats. */ |
| if (abfd && input_bfd |
| && abfd->xvec == input_bfd->xvec) |
| lh = 0; |
| else |
| { |
| h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); |
| lh = (struct bfd_link_hash_entry *) h; |
| } |
| lookup: |
| if (lh) |
| { |
| switch (lh->type) |
| { |
| case bfd_link_hash_undefined: |
| case bfd_link_hash_undefweak: |
| case bfd_link_hash_common: |
| gp_found = 0; |
| break; |
| case bfd_link_hash_defined: |
| case bfd_link_hash_defweak: |
| gp_found = 1; |
| gp = lh->u.def.value; |
| break; |
| case bfd_link_hash_indirect: |
| case bfd_link_hash_warning: |
| lh = lh->u.i.link; |
| /* @@FIXME ignoring warning for now */ |
| goto lookup; |
| case bfd_link_hash_new: |
| default: |
| abort (); |
| } |
| } |
| else |
| gp_found = 0; |
| } |
| /* end mips */ |
| for (parent = reloc_vector; *parent != (arelent *) NULL; |
| parent++) |
| { |
| char *error_message = (char *) NULL; |
| bfd_reloc_status_type r; |
| |
| /* Specific to MIPS: Deal with relocation types that require |
| knowing the gp of the output bfd. */ |
| asymbol *sym = *(*parent)->sym_ptr_ptr; |
| if (bfd_is_abs_section (sym->section) && abfd) |
| { |
| /* The special_function wouldn't get called anyways. */ |
| } |
| else if (!gp_found) |
| { |
| /* The gp isn't there; let the special function code |
| fall over on its own. */ |
| } |
| else if ((*parent)->howto->special_function |
| == _bfd_mips_elf_gprel16_reloc) |
| { |
| /* bypass special_function call */ |
| r = gprel16_with_gp (input_bfd, sym, *parent, input_section, |
| relocateable, (PTR) data, gp); |
| goto skip_bfd_perform_relocation; |
| } |
| /* end mips specific stuff */ |
| |
| r = bfd_perform_relocation (input_bfd, |
| *parent, |
| (PTR) data, |
| input_section, |
| relocateable ? abfd : (bfd *) NULL, |
| &error_message); |
| skip_bfd_perform_relocation: |
| |
| if (relocateable) |
| { |
| asection *os = input_section->output_section; |
| |
| /* A partial link, so keep the relocs */ |
| os->orelocation[os->reloc_count] = *parent; |
| os->reloc_count++; |
| } |
| |
| if (r != bfd_reloc_ok) |
| { |
| switch (r) |
| { |
| case bfd_reloc_undefined: |
| if (!((*link_info->callbacks->undefined_symbol) |
| (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), |
| input_bfd, input_section, (*parent)->address))) |
| goto error_return; |
| break; |
| case bfd_reloc_dangerous: |
| BFD_ASSERT (error_message != (char *) NULL); |
| if (!((*link_info->callbacks->reloc_dangerous) |
| (link_info, error_message, input_bfd, input_section, |
| (*parent)->address))) |
| goto error_return; |
| break; |
| case bfd_reloc_overflow: |
| if (!((*link_info->callbacks->reloc_overflow) |
| (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), |
| (*parent)->howto->name, (*parent)->addend, |
| input_bfd, input_section, (*parent)->address))) |
| goto error_return; |
| break; |
| case bfd_reloc_outofrange: |
| default: |
| abort (); |
| break; |
| } |
| |
| } |
| } |
| } |
| if (reloc_vector != NULL) |
| free (reloc_vector); |
| return data; |
| |
| error_return: |
| if (reloc_vector != NULL) |
| free (reloc_vector); |
| return NULL; |
| } |
| #define bfd_elf32_bfd_get_relocated_section_contents \ |
| elf32_mips_get_relocated_section_contents |
| |
| /* ECOFF swapping routines. These are used when dealing with the |
| .mdebug section, which is in the ECOFF debugging format. */ |
| static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = |
| { |
| /* Symbol table magic number. */ |
| magicSym, |
| /* Alignment of debugging information. E.g., 4. */ |
| 4, |
| /* Sizes of external symbolic information. */ |
| sizeof (struct hdr_ext), |
| sizeof (struct dnr_ext), |
| sizeof (struct pdr_ext), |
| sizeof (struct sym_ext), |
| sizeof (struct opt_ext), |
| sizeof (struct fdr_ext), |
| sizeof (struct rfd_ext), |
| sizeof (struct ext_ext), |
| /* Functions to swap in external symbolic data. */ |
| ecoff_swap_hdr_in, |
| ecoff_swap_dnr_in, |
| ecoff_swap_pdr_in, |
| ecoff_swap_sym_in, |
| ecoff_swap_opt_in, |
| ecoff_swap_fdr_in, |
| ecoff_swap_rfd_in, |
| ecoff_swap_ext_in, |
| _bfd_ecoff_swap_tir_in, |
| _bfd_ecoff_swap_rndx_in, |
| /* Functions to swap out external symbolic data. */ |
| ecoff_swap_hdr_out, |
| ecoff_swap_dnr_out, |
| ecoff_swap_pdr_out, |
| ecoff_swap_sym_out, |
| ecoff_swap_opt_out, |
| ecoff_swap_fdr_out, |
| ecoff_swap_rfd_out, |
| ecoff_swap_ext_out, |
| _bfd_ecoff_swap_tir_out, |
| _bfd_ecoff_swap_rndx_out, |
| /* Function to read in symbolic data. */ |
| _bfd_mips_elf_read_ecoff_info |
| }; |
| |
| #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec |
| #define TARGET_LITTLE_NAME "elf32-littlemips" |
| #define TARGET_BIG_SYM bfd_elf32_bigmips_vec |
| #define TARGET_BIG_NAME "elf32-bigmips" |
| #define ELF_ARCH bfd_arch_mips |
| #define ELF_MACHINE_CODE EM_MIPS |
| |
| /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses |
| a value of 0x1000, and we are compatible. */ |
| #define ELF_MAXPAGESIZE 0x1000 |
| |
| #define elf_backend_collect true |
| #define elf_backend_type_change_ok true |
| #define elf_backend_can_gc_sections true |
| #define elf_info_to_howto 0 |
| #define elf_info_to_howto_rel mips_info_to_howto_rel |
| #define elf_backend_sym_is_global mips_elf_sym_is_global |
| #define elf_backend_object_p mips_elf32_object_p |
| #define elf_backend_section_from_shdr mips_elf32_section_from_shdr |
| #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
| #define elf_backend_section_from_bfd_section \ |
| _bfd_mips_elf_section_from_bfd_section |
| #define elf_backend_section_processing mips_elf32_section_processing |
| #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
| #define elf_backend_additional_program_headers \ |
| mips_elf_additional_program_headers |
| #define elf_backend_modify_segment_map mips_elf_modify_segment_map |
| #define elf_backend_final_write_processing \ |
| _bfd_mips_elf_final_write_processing |
| #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap |
| |
| #define bfd_elf32_bfd_is_local_label_name \ |
| mips_elf_is_local_label_name |
| #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line |
| #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents |
| #define bfd_elf32_bfd_link_hash_table_create \ |
| mips_elf_link_hash_table_create |
| #define bfd_elf32_bfd_final_link mips_elf_final_link |
| #define bfd_elf32_bfd_copy_private_bfd_data \ |
| _bfd_mips_elf_copy_private_bfd_data |
| #define bfd_elf32_bfd_merge_private_bfd_data \ |
| _bfd_mips_elf_merge_private_bfd_data |
| #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags |
| #define bfd_elf32_bfd_print_private_bfd_data \ |
| _bfd_mips_elf_print_private_bfd_data |
| #define elf_backend_add_symbol_hook mips_elf_add_symbol_hook |
| #define elf_backend_create_dynamic_sections \ |
| mips_elf_create_dynamic_sections |
| #define elf_backend_check_relocs mips_elf_check_relocs |
| #define elf_backend_adjust_dynamic_symbol \ |
| mips_elf_adjust_dynamic_symbol |
| #define elf_backend_always_size_sections \ |
| mips_elf_always_size_sections |
| #define elf_backend_size_dynamic_sections \ |
| mips_elf_size_dynamic_sections |
| #define elf_backend_relocate_section mips_elf_relocate_section |
| #define elf_backend_link_output_symbol_hook \ |
| mips_elf_link_output_symbol_hook |
| #define elf_backend_finish_dynamic_symbol \ |
| mips_elf_finish_dynamic_symbol |
| #define elf_backend_finish_dynamic_sections \ |
| mips_elf_finish_dynamic_sections |
| #define elf_backend_gc_mark_hook mips_elf_gc_mark_hook |
| #define elf_backend_gc_sweep_hook mips_elf_gc_sweep_hook |
| |
| #define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO) |
| #define elf_backend_plt_header_size 0 |
| |
| #include "elf32-target.h" |