| /* BFD backend for SunOS binaries. |
| Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
| Written by Cygnus Support. |
| |
| 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| #define TARGETNAME "a.out-sunos-big" |
| |
| /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
| remove whitespace added here, and thus will fail to concatenate |
| the tokens. */ |
| #define MY(OP) CONCAT2 (sunos_big_,OP) |
| |
| #include "bfd.h" |
| #include "bfdlink.h" |
| #include "libaout.h" |
| |
| /* ??? Where should this go? */ |
| #define MACHTYPE_OK(mtype) \ |
| (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \ |
| || ((mtype) == M_SPARCLET \ |
| && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| || ((mtype) == M_SPARCLITE_LE \ |
| && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \ |
| && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL)) |
| |
| #define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound |
| #define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab |
| #define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab |
| #define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound |
| #define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc |
| #define MY_bfd_link_hash_table_create sunos_link_hash_table_create |
| #define MY_add_dynamic_symbols sunos_add_dynamic_symbols |
| #define MY_add_one_symbol sunos_add_one_symbol |
| #define MY_link_dynamic_object sunos_link_dynamic_object |
| #define MY_write_dynamic_symbol sunos_write_dynamic_symbol |
| #define MY_check_dynamic_reloc sunos_check_dynamic_reloc |
| #define MY_finish_dynamic_link sunos_finish_dynamic_link |
| |
| static bfd_boolean sunos_add_dynamic_symbols (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **); |
| static bfd_boolean sunos_add_one_symbol (struct bfd_link_info *, bfd *, const char *, flagword, asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, struct bfd_link_hash_entry **); |
| static bfd_boolean sunos_link_dynamic_object (struct bfd_link_info *, bfd *); |
| static bfd_boolean sunos_write_dynamic_symbol (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *); |
| static bfd_boolean sunos_check_dynamic_reloc (struct bfd_link_info *, bfd *, asection *, struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, bfd_vma *); |
| static bfd_boolean sunos_finish_dynamic_link (bfd *, struct bfd_link_info *); |
| static struct bfd_link_hash_table *sunos_link_hash_table_create (bfd *); |
| static long sunos_get_dynamic_symtab_upper_bound (bfd *); |
| static long sunos_canonicalize_dynamic_symtab (bfd *, asymbol **); |
| static long sunos_get_dynamic_reloc_upper_bound (bfd *); |
| static long sunos_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **); |
| |
| /* Include the usual a.out support. */ |
| #include "aoutf1.h" |
| |
| /* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */ |
| #undef valid |
| |
| /* SunOS shared library support. We store a pointer to this structure |
| in obj_aout_dynamic_info (abfd). */ |
| |
| struct sunos_dynamic_info |
| { |
| /* Whether we found any dynamic information. */ |
| bfd_boolean valid; |
| /* Dynamic information. */ |
| struct internal_sun4_dynamic_link dyninfo; |
| /* Number of dynamic symbols. */ |
| unsigned long dynsym_count; |
| /* Read in nlists for dynamic symbols. */ |
| struct external_nlist *dynsym; |
| /* asymbol structures for dynamic symbols. */ |
| aout_symbol_type *canonical_dynsym; |
| /* Read in dynamic string table. */ |
| char *dynstr; |
| /* Number of dynamic relocs. */ |
| unsigned long dynrel_count; |
| /* Read in dynamic relocs. This may be reloc_std_external or |
| reloc_ext_external. */ |
| void * dynrel; |
| /* arelent structures for dynamic relocs. */ |
| arelent *canonical_dynrel; |
| }; |
| |
| /* The hash table of dynamic symbols is composed of two word entries. |
| See include/aout/sun4.h for details. */ |
| |
| #define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD) |
| |
| /* Read in the basic dynamic information. This locates the __DYNAMIC |
| structure and uses it to find the dynamic_link structure. It |
| creates and saves a sunos_dynamic_info structure. If it can't find |
| __DYNAMIC, it sets the valid field of the sunos_dynamic_info |
| structure to FALSE to avoid doing this work again. */ |
| |
| static bfd_boolean |
| sunos_read_dynamic_info (bfd *abfd) |
| { |
| struct sunos_dynamic_info *info; |
| asection *dynsec; |
| bfd_vma dynoff; |
| struct external_sun4_dynamic dyninfo; |
| unsigned long dynver; |
| struct external_sun4_dynamic_link linkinfo; |
| bfd_size_type amt; |
| |
| if (obj_aout_dynamic_info (abfd) != NULL) |
| return TRUE; |
| |
| if ((abfd->flags & DYNAMIC) == 0) |
| { |
| bfd_set_error (bfd_error_invalid_operation); |
| return FALSE; |
| } |
| |
| amt = sizeof (struct sunos_dynamic_info); |
| info = bfd_zalloc (abfd, amt); |
| if (!info) |
| return FALSE; |
| info->valid = FALSE; |
| info->dynsym = NULL; |
| info->dynstr = NULL; |
| info->canonical_dynsym = NULL; |
| info->dynrel = NULL; |
| info->canonical_dynrel = NULL; |
| obj_aout_dynamic_info (abfd) = (void *) info; |
| |
| /* This code used to look for the __DYNAMIC symbol to locate the dynamic |
| linking information. |
| However this inhibits recovering the dynamic symbols from a |
| stripped object file, so blindly assume that the dynamic linking |
| information is located at the start of the data section. |
| We could verify this assumption later by looking through the dynamic |
| symbols for the __DYNAMIC symbol. */ |
| if ((abfd->flags & DYNAMIC) == 0) |
| return TRUE; |
| if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo, |
| (file_ptr) 0, |
| (bfd_size_type) sizeof dyninfo)) |
| return TRUE; |
| |
| dynver = GET_WORD (abfd, dyninfo.ld_version); |
| if (dynver != 2 && dynver != 3) |
| return TRUE; |
| |
| dynoff = GET_WORD (abfd, dyninfo.ld); |
| |
| /* dynoff is a virtual address. It is probably always in the .data |
| section, but this code should work even if it moves. */ |
| if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd))) |
| dynsec = obj_textsec (abfd); |
| else |
| dynsec = obj_datasec (abfd); |
| dynoff -= bfd_get_section_vma (abfd, dynsec); |
| if (dynoff > dynsec->size) |
| return TRUE; |
| |
| /* This executable appears to be dynamically linked in a way that we |
| can understand. */ |
| if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo, |
| (file_ptr) dynoff, |
| (bfd_size_type) sizeof linkinfo)) |
| return TRUE; |
| |
| /* Swap in the dynamic link information. */ |
| info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded); |
| info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need); |
| info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules); |
| info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got); |
| info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt); |
| info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel); |
| info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash); |
| info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab); |
| info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash); |
| info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets); |
| info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols); |
| info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size); |
| info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text); |
| info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz); |
| |
| /* Reportedly the addresses need to be offset by the size of the |
| exec header in an NMAGIC file. */ |
| if (adata (abfd).magic == n_magic) |
| { |
| unsigned long exec_bytes_size = adata (abfd).exec_bytes_size; |
| |
| info->dyninfo.ld_need += exec_bytes_size; |
| info->dyninfo.ld_rules += exec_bytes_size; |
| info->dyninfo.ld_rel += exec_bytes_size; |
| info->dyninfo.ld_hash += exec_bytes_size; |
| info->dyninfo.ld_stab += exec_bytes_size; |
| info->dyninfo.ld_symbols += exec_bytes_size; |
| } |
| |
| /* The only way to get the size of the symbol information appears to |
| be to determine the distance between it and the string table. */ |
| info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab) |
| / EXTERNAL_NLIST_SIZE); |
| BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE |
| == (unsigned long) (info->dyninfo.ld_symbols |
| - info->dyninfo.ld_stab)); |
| |
| /* Similarly, the relocs end at the hash table. */ |
| info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel) |
| / obj_reloc_entry_size (abfd)); |
| BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd) |
| == (unsigned long) (info->dyninfo.ld_hash |
| - info->dyninfo.ld_rel)); |
| |
| info->valid = TRUE; |
| |
| return TRUE; |
| } |
| |
| /* Return the amount of memory required for the dynamic symbols. */ |
| |
| static long |
| sunos_get_dynamic_symtab_upper_bound (bfd *abfd) |
| { |
| struct sunos_dynamic_info *info; |
| |
| if (! sunos_read_dynamic_info (abfd)) |
| return -1; |
| |
| info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| if (! info->valid) |
| { |
| bfd_set_error (bfd_error_no_symbols); |
| return -1; |
| } |
| |
| return (info->dynsym_count + 1) * sizeof (asymbol *); |
| } |
| |
| /* Read the external dynamic symbols. */ |
| |
| static bfd_boolean |
| sunos_slurp_dynamic_symtab (bfd *abfd) |
| { |
| struct sunos_dynamic_info *info; |
| bfd_size_type amt; |
| |
| /* Get the general dynamic information. */ |
| if (obj_aout_dynamic_info (abfd) == NULL) |
| { |
| if (! sunos_read_dynamic_info (abfd)) |
| return FALSE; |
| } |
| |
| info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| if (! info->valid) |
| { |
| bfd_set_error (bfd_error_no_symbols); |
| return FALSE; |
| } |
| |
| /* Get the dynamic nlist structures. */ |
| if (info->dynsym == NULL) |
| { |
| amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE; |
| info->dynsym = bfd_alloc (abfd, amt); |
| if (info->dynsym == NULL && info->dynsym_count != 0) |
| return FALSE; |
| if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0 |
| || bfd_bread ((void *) info->dynsym, amt, abfd) != amt) |
| { |
| if (info->dynsym != NULL) |
| { |
| bfd_release (abfd, info->dynsym); |
| info->dynsym = NULL; |
| } |
| return FALSE; |
| } |
| } |
| |
| /* Get the dynamic strings. */ |
| if (info->dynstr == NULL) |
| { |
| amt = info->dyninfo.ld_symb_size; |
| info->dynstr = bfd_alloc (abfd, amt); |
| if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0) |
| return FALSE; |
| if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0 |
| || bfd_bread ((void *) info->dynstr, amt, abfd) != amt) |
| { |
| if (info->dynstr != NULL) |
| { |
| bfd_release (abfd, info->dynstr); |
| info->dynstr = NULL; |
| } |
| return FALSE; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| /* Read in the dynamic symbols. */ |
| |
| static long |
| sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage) |
| { |
| struct sunos_dynamic_info *info; |
| unsigned long i; |
| |
| if (! sunos_slurp_dynamic_symtab (abfd)) |
| return -1; |
| |
| info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| |
| #ifdef CHECK_DYNAMIC_HASH |
| /* Check my understanding of the dynamic hash table by making sure |
| that each symbol can be located in the hash table. */ |
| { |
| bfd_size_type table_size; |
| bfd_byte *table; |
| bfd_size_type i; |
| |
| if (info->dyninfo.ld_buckets > info->dynsym_count) |
| abort (); |
| table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash; |
| table = bfd_malloc (table_size); |
| if (table == NULL && table_size != 0) |
| abort (); |
| if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0 |
| || bfd_bread ((void *) table, table_size, abfd) != table_size) |
| abort (); |
| for (i = 0; i < info->dynsym_count; i++) |
| { |
| unsigned char *name; |
| unsigned long hash; |
| |
| name = ((unsigned char *) info->dynstr |
| + GET_WORD (abfd, info->dynsym[i].e_strx)); |
| hash = 0; |
| while (*name != '\0') |
| hash = (hash << 1) + *name++; |
| hash &= 0x7fffffff; |
| hash %= info->dyninfo.ld_buckets; |
| while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i) |
| { |
| hash = GET_WORD (abfd, |
| table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE) |
| abort (); |
| } |
| } |
| free (table); |
| } |
| #endif /* CHECK_DYNAMIC_HASH */ |
| |
| /* Get the asymbol structures corresponding to the dynamic nlist |
| structures. */ |
| if (info->canonical_dynsym == NULL) |
| { |
| bfd_size_type size; |
| bfd_size_type strsize = info->dyninfo.ld_symb_size; |
| |
| size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type); |
| info->canonical_dynsym = bfd_alloc (abfd, size); |
| if (info->canonical_dynsym == NULL && info->dynsym_count != 0) |
| return -1; |
| |
| if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym, |
| info->dynsym, |
| (bfd_size_type) info->dynsym_count, |
| info->dynstr, strsize, TRUE)) |
| { |
| if (info->canonical_dynsym != NULL) |
| { |
| bfd_release (abfd, info->canonical_dynsym); |
| info->canonical_dynsym = NULL; |
| } |
| return -1; |
| } |
| } |
| |
| /* Return pointers to the dynamic asymbol structures. */ |
| for (i = 0; i < info->dynsym_count; i++) |
| *storage++ = (asymbol *) (info->canonical_dynsym + i); |
| *storage = NULL; |
| |
| return info->dynsym_count; |
| } |
| |
| /* Return the amount of memory required for the dynamic relocs. */ |
| |
| static long |
| sunos_get_dynamic_reloc_upper_bound (bfd *abfd) |
| { |
| struct sunos_dynamic_info *info; |
| |
| if (! sunos_read_dynamic_info (abfd)) |
| return -1; |
| |
| info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| if (! info->valid) |
| { |
| bfd_set_error (bfd_error_no_symbols); |
| return -1; |
| } |
| |
| return (info->dynrel_count + 1) * sizeof (arelent *); |
| } |
| |
| /* Read in the dynamic relocs. */ |
| |
| static long |
| sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms) |
| { |
| struct sunos_dynamic_info *info; |
| unsigned long i; |
| bfd_size_type size; |
| |
| /* Get the general dynamic information. */ |
| if (obj_aout_dynamic_info (abfd) == NULL) |
| { |
| if (! sunos_read_dynamic_info (abfd)) |
| return -1; |
| } |
| |
| info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| if (! info->valid) |
| { |
| bfd_set_error (bfd_error_no_symbols); |
| return -1; |
| } |
| |
| /* Get the dynamic reloc information. */ |
| if (info->dynrel == NULL) |
| { |
| size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd); |
| info->dynrel = bfd_alloc (abfd, size); |
| if (info->dynrel == NULL && size != 0) |
| return -1; |
| if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0 |
| || bfd_bread ((void *) info->dynrel, size, abfd) != size) |
| { |
| if (info->dynrel != NULL) |
| { |
| bfd_release (abfd, info->dynrel); |
| info->dynrel = NULL; |
| } |
| return -1; |
| } |
| } |
| |
| /* Get the arelent structures corresponding to the dynamic reloc |
| information. */ |
| if (info->canonical_dynrel == NULL) |
| { |
| arelent *to; |
| |
| size = (bfd_size_type) info->dynrel_count * sizeof (arelent); |
| info->canonical_dynrel = bfd_alloc (abfd, size); |
| if (info->canonical_dynrel == NULL && info->dynrel_count != 0) |
| return -1; |
| |
| to = info->canonical_dynrel; |
| |
| if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) |
| { |
| struct reloc_ext_external *p; |
| struct reloc_ext_external *pend; |
| |
| p = (struct reloc_ext_external *) info->dynrel; |
| pend = p + info->dynrel_count; |
| for (; p < pend; p++, to++) |
| NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms, |
| (bfd_size_type) info->dynsym_count); |
| } |
| else |
| { |
| struct reloc_std_external *p; |
| struct reloc_std_external *pend; |
| |
| p = (struct reloc_std_external *) info->dynrel; |
| pend = p + info->dynrel_count; |
| for (; p < pend; p++, to++) |
| NAME (aout, swap_std_reloc_in) (abfd, p, to, syms, |
| (bfd_size_type) info->dynsym_count); |
| } |
| } |
| |
| /* Return pointers to the dynamic arelent structures. */ |
| for (i = 0; i < info->dynrel_count; i++) |
| *storage++ = info->canonical_dynrel + i; |
| *storage = NULL; |
| |
| return info->dynrel_count; |
| } |
| |
| /* Code to handle linking of SunOS shared libraries. */ |
| |
| /* A SPARC procedure linkage table entry is 12 bytes. The first entry |
| in the table is a jump which is filled in by the runtime linker. |
| The remaining entries are branches back to the first entry, |
| followed by an index into the relocation table encoded to look like |
| a sethi of %g0. */ |
| |
| #define SPARC_PLT_ENTRY_SIZE (12) |
| |
| static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] = |
| { |
| /* sethi %hi(0),%g1; address filled in by runtime linker. */ |
| 0x3, 0, 0, 0, |
| /* jmp %g1; offset filled in by runtime linker. */ |
| 0x81, 0xc0, 0x60, 0, |
| /* nop */ |
| 0x1, 0, 0, 0 |
| }; |
| |
| /* save %sp, -96, %sp */ |
| #define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0) |
| /* call; address filled in later. */ |
| #define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000) |
| /* sethi; reloc index filled in later. */ |
| #define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000) |
| |
| /* This sequence is used when for the jump table entry to a defined |
| symbol in a complete executable. It is used when linking PIC |
| compiled code which is not being put into a shared library. */ |
| /* sethi <address to be filled in later>, %g1 */ |
| #define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000) |
| /* jmp %g1 + <address to be filled in later> */ |
| #define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000) |
| /* nop */ |
| #define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000) |
| |
| /* An m68k procedure linkage table entry is 8 bytes. The first entry |
| in the table is a jump which is filled in the by the runtime |
| linker. The remaining entries are branches back to the first |
| entry, followed by a two byte index into the relocation table. */ |
| |
| #define M68K_PLT_ENTRY_SIZE (8) |
| |
| static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] = |
| { |
| /* jmps @# */ |
| 0x4e, 0xf9, |
| /* Filled in by runtime linker with a magic address. */ |
| 0, 0, 0, 0, |
| /* Not used? */ |
| 0, 0 |
| }; |
| |
| /* bsrl */ |
| #define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff) |
| /* Remaining words filled in later. */ |
| |
| /* An entry in the SunOS linker hash table. */ |
| |
| struct sunos_link_hash_entry |
| { |
| struct aout_link_hash_entry root; |
| |
| /* If this is a dynamic symbol, this is its index into the dynamic |
| symbol table. This is initialized to -1. As the linker looks at |
| the input files, it changes this to -2 if it will be added to the |
| dynamic symbol table. After all the input files have been seen, |
| the linker will know whether to build a dynamic symbol table; if |
| it does build one, this becomes the index into the table. */ |
| long dynindx; |
| |
| /* If this is a dynamic symbol, this is the index of the name in the |
| dynamic symbol string table. */ |
| long dynstr_index; |
| |
| /* The offset into the global offset table used for this symbol. If |
| the symbol does not require a GOT entry, this is 0. */ |
| bfd_vma got_offset; |
| |
| /* The offset into the procedure linkage table used for this symbol. |
| If the symbol does not require a PLT entry, this is 0. */ |
| bfd_vma plt_offset; |
| |
| /* Some linker flags. */ |
| unsigned char flags; |
| /* Symbol is referenced by a regular object. */ |
| #define SUNOS_REF_REGULAR 01 |
| /* Symbol is defined by a regular object. */ |
| #define SUNOS_DEF_REGULAR 02 |
| /* Symbol is referenced by a dynamic object. */ |
| #define SUNOS_REF_DYNAMIC 04 |
| /* Symbol is defined by a dynamic object. */ |
| #define SUNOS_DEF_DYNAMIC 010 |
| /* Symbol is a constructor symbol in a regular object. */ |
| #define SUNOS_CONSTRUCTOR 020 |
| }; |
| |
| /* The SunOS linker hash table. */ |
| |
| struct sunos_link_hash_table |
| { |
| struct aout_link_hash_table root; |
| |
| /* The object which holds the dynamic sections. */ |
| bfd *dynobj; |
| |
| /* Whether we have created the dynamic sections. */ |
| bfd_boolean dynamic_sections_created; |
| |
| /* Whether we need the dynamic sections. */ |
| bfd_boolean dynamic_sections_needed; |
| |
| /* Whether we need the .got table. */ |
| bfd_boolean got_needed; |
| |
| /* The number of dynamic symbols. */ |
| size_t dynsymcount; |
| |
| /* The number of buckets in the hash table. */ |
| size_t bucketcount; |
| |
| /* The list of dynamic objects needed by dynamic objects included in |
| the link. */ |
| struct bfd_link_needed_list *needed; |
| |
| /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */ |
| bfd_vma got_base; |
| }; |
| |
| /* Routine to create an entry in an SunOS link hash table. */ |
| |
| static struct bfd_hash_entry * |
| sunos_link_hash_newfunc (struct bfd_hash_entry *entry, |
| struct bfd_hash_table *table, |
| const char *string) |
| { |
| struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry; |
| |
| /* Allocate the structure if it has not already been allocated by a |
| subclass. */ |
| if (ret == NULL) |
| ret = bfd_hash_allocate (table, sizeof (* ret)); |
| if (ret == NULL) |
| return NULL; |
| |
| /* Call the allocation method of the superclass. */ |
| ret = ((struct sunos_link_hash_entry *) |
| NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret, |
| table, string)); |
| if (ret != NULL) |
| { |
| /* Set local fields. */ |
| ret->dynindx = -1; |
| ret->dynstr_index = -1; |
| ret->got_offset = 0; |
| ret->plt_offset = 0; |
| ret->flags = 0; |
| } |
| |
| return (struct bfd_hash_entry *) ret; |
| } |
| |
| /* Create a SunOS link hash table. */ |
| |
| static struct bfd_link_hash_table * |
| sunos_link_hash_table_create (bfd *abfd) |
| { |
| struct sunos_link_hash_table *ret; |
| bfd_size_type amt = sizeof (struct sunos_link_hash_table); |
| |
| ret = bfd_malloc (amt); |
| if (ret == NULL) |
| return NULL; |
| if (! NAME (aout, link_hash_table_init) (&ret->root, abfd, |
| sunos_link_hash_newfunc)) |
| { |
| free (ret); |
| return NULL; |
| } |
| |
| ret->dynobj = NULL; |
| ret->dynamic_sections_created = FALSE; |
| ret->dynamic_sections_needed = FALSE; |
| ret->got_needed = FALSE; |
| ret->dynsymcount = 0; |
| ret->bucketcount = 0; |
| ret->needed = NULL; |
| ret->got_base = 0; |
| |
| return &ret->root.root; |
| } |
| |
| /* Look up an entry in an SunOS link hash table. */ |
| |
| #define sunos_link_hash_lookup(table, string, create, copy, follow) \ |
| ((struct sunos_link_hash_entry *) \ |
| aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\ |
| (follow))) |
| |
| /* Traverse a SunOS link hash table. */ |
| |
| #define sunos_link_hash_traverse(table, func, info) \ |
| (aout_link_hash_traverse \ |
| (&(table)->root, \ |
| (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func), \ |
| (info))) |
| |
| /* Get the SunOS link hash table from the info structure. This is |
| just a cast. */ |
| |
| #define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash)) |
| |
| /* Create the dynamic sections needed if we are linking against a |
| dynamic object, or if we are linking PIC compiled code. ABFD is a |
| bfd we can attach the dynamic sections to. The linker script will |
| look for these special sections names and put them in the right |
| place in the output file. See include/aout/sun4.h for more details |
| of the dynamic linking information. */ |
| |
| static bfd_boolean |
| sunos_create_dynamic_sections (bfd *abfd, |
| struct bfd_link_info *info, |
| bfd_boolean needed) |
| { |
| asection *s; |
| |
| if (! sunos_hash_table (info)->dynamic_sections_created) |
| { |
| flagword flags; |
| |
| sunos_hash_table (info)->dynobj = abfd; |
| |
| flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| | SEC_LINKER_CREATED); |
| |
| /* The .dynamic section holds the basic dynamic information: the |
| sun4_dynamic structure, the dynamic debugger information, and |
| the sun4_dynamic_link structure. */ |
| s = bfd_make_section (abfd, ".dynamic"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| /* The .got section holds the global offset table. The address |
| is put in the ld_got field. */ |
| s = bfd_make_section (abfd, ".got"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| /* The .plt section holds the procedure linkage table. The |
| address is put in the ld_plt field. */ |
| s = bfd_make_section (abfd, ".plt"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| /* The .dynrel section holds the dynamic relocs. The address is |
| put in the ld_rel field. */ |
| s = bfd_make_section (abfd, ".dynrel"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| /* The .hash section holds the dynamic hash table. The address |
| is put in the ld_hash field. */ |
| s = bfd_make_section (abfd, ".hash"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| /* The .dynsym section holds the dynamic symbols. The address |
| is put in the ld_stab field. */ |
| s = bfd_make_section (abfd, ".dynsym"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| /* The .dynstr section holds the dynamic symbol string table. |
| The address is put in the ld_symbols field. */ |
| s = bfd_make_section (abfd, ".dynstr"); |
| if (s == NULL |
| || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| || ! bfd_set_section_alignment (abfd, s, 2)) |
| return FALSE; |
| |
| sunos_hash_table (info)->dynamic_sections_created = TRUE; |
| } |
| |
| if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed) |
| || info->shared) |
| { |
| bfd *dynobj; |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| |
| s = bfd_get_section_by_name (dynobj, ".got"); |
| if (s->size == 0) |
| s->size = BYTES_IN_WORD; |
| |
| sunos_hash_table (info)->dynamic_sections_needed = TRUE; |
| sunos_hash_table (info)->got_needed = TRUE; |
| } |
| |
| return TRUE; |
| } |
| |
| /* Add dynamic symbols during a link. This is called by the a.out |
| backend linker for each object it encounters. */ |
| |
| static bfd_boolean |
| sunos_add_dynamic_symbols (bfd *abfd, |
| struct bfd_link_info *info, |
| struct external_nlist **symsp, |
| bfd_size_type *sym_countp, |
| char **stringsp) |
| { |
| bfd *dynobj; |
| struct sunos_dynamic_info *dinfo; |
| unsigned long need; |
| |
| /* Make sure we have all the required sections. */ |
| if (info->hash->creator == abfd->xvec) |
| { |
| if (! sunos_create_dynamic_sections (abfd, info, |
| ((abfd->flags & DYNAMIC) != 0 |
| && !info->relocatable))) |
| return FALSE; |
| } |
| |
| /* There is nothing else to do for a normal object. */ |
| if ((abfd->flags & DYNAMIC) == 0) |
| return TRUE; |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| |
| /* We do not want to include the sections in a dynamic object in the |
| output file. We hack by simply clobbering the list of sections |
| in the BFD. This could be handled more cleanly by, say, a new |
| section flag; the existing SEC_NEVER_LOAD flag is not the one we |
| want, because that one still implies that the section takes up |
| space in the output file. If this is the first object we have |
| seen, we must preserve the dynamic sections we just created. */ |
| if (abfd != dynobj) |
| abfd->sections = NULL; |
| else |
| { |
| asection *s; |
| |
| for (s = abfd->sections; s != NULL; s = s->next) |
| { |
| if ((s->flags & SEC_LINKER_CREATED) == 0) |
| bfd_section_list_remove (abfd, s); |
| } |
| } |
| |
| /* The native linker seems to just ignore dynamic objects when -r is |
| used. */ |
| if (info->relocatable) |
| return TRUE; |
| |
| /* There's no hope of using a dynamic object which does not exactly |
| match the format of the output file. */ |
| if (info->hash->creator != abfd->xvec) |
| { |
| bfd_set_error (bfd_error_invalid_operation); |
| return FALSE; |
| } |
| |
| /* Make sure we have a .need and a .rules sections. These are only |
| needed if there really is a dynamic object in the link, so they |
| are not added by sunos_create_dynamic_sections. */ |
| if (bfd_get_section_by_name (dynobj, ".need") == NULL) |
| { |
| /* The .need section holds the list of names of shared objets |
| which must be included at runtime. The address of this |
| section is put in the ld_need field. */ |
| asection *s = bfd_make_section (dynobj, ".need"); |
| if (s == NULL |
| || ! bfd_set_section_flags (dynobj, s, |
| (SEC_ALLOC |
| | SEC_LOAD |
| | SEC_HAS_CONTENTS |
| | SEC_IN_MEMORY |
| | SEC_READONLY)) |
| || ! bfd_set_section_alignment (dynobj, s, 2)) |
| return FALSE; |
| } |
| |
| if (bfd_get_section_by_name (dynobj, ".rules") == NULL) |
| { |
| /* The .rules section holds the path to search for shared |
| objects. The address of this section is put in the ld_rules |
| field. */ |
| asection *s = bfd_make_section (dynobj, ".rules"); |
| if (s == NULL |
| || ! bfd_set_section_flags (dynobj, s, |
| (SEC_ALLOC |
| | SEC_LOAD |
| | SEC_HAS_CONTENTS |
| | SEC_IN_MEMORY |
| | SEC_READONLY)) |
| || ! bfd_set_section_alignment (dynobj, s, 2)) |
| return FALSE; |
| } |
| |
| /* Pick up the dynamic symbols and return them to the caller. */ |
| if (! sunos_slurp_dynamic_symtab (abfd)) |
| return FALSE; |
| |
| dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| *symsp = dinfo->dynsym; |
| *sym_countp = dinfo->dynsym_count; |
| *stringsp = dinfo->dynstr; |
| |
| /* Record information about any other objects needed by this one. */ |
| need = dinfo->dyninfo.ld_need; |
| while (need != 0) |
| { |
| bfd_byte buf[16]; |
| unsigned long name, flags; |
| unsigned short major_vno, minor_vno; |
| struct bfd_link_needed_list *needed, **pp; |
| char *namebuf, *p; |
| bfd_size_type alc; |
| bfd_byte b; |
| char *namecopy; |
| |
| if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0 |
| || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16) |
| return FALSE; |
| |
| /* For the format of an ld_need entry, see aout/sun4.h. We |
| should probably define structs for this manipulation. */ |
| name = bfd_get_32 (abfd, buf); |
| flags = bfd_get_32 (abfd, buf + 4); |
| major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8); |
| minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10); |
| need = bfd_get_32 (abfd, buf + 12); |
| |
| alc = sizeof (struct bfd_link_needed_list); |
| needed = bfd_alloc (abfd, alc); |
| if (needed == NULL) |
| return FALSE; |
| needed->by = abfd; |
| |
| /* We return the name as [-l]name[.maj][.min]. */ |
| alc = 30; |
| namebuf = bfd_malloc (alc + 1); |
| if (namebuf == NULL) |
| return FALSE; |
| p = namebuf; |
| |
| if ((flags & 0x80000000) != 0) |
| { |
| *p++ = '-'; |
| *p++ = 'l'; |
| } |
| if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0) |
| { |
| free (namebuf); |
| return FALSE; |
| } |
| |
| do |
| { |
| if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1) |
| { |
| free (namebuf); |
| return FALSE; |
| } |
| |
| if ((bfd_size_type) (p - namebuf) >= alc) |
| { |
| char *n; |
| |
| alc *= 2; |
| n = bfd_realloc (namebuf, alc + 1); |
| if (n == NULL) |
| { |
| free (namebuf); |
| return FALSE; |
| } |
| p = n + (p - namebuf); |
| namebuf = n; |
| } |
| |
| *p++ = b; |
| } |
| while (b != '\0'); |
| |
| if (major_vno == 0) |
| *p = '\0'; |
| else |
| { |
| char majbuf[30]; |
| char minbuf[30]; |
| |
| sprintf (majbuf, ".%d", major_vno); |
| if (minor_vno == 0) |
| minbuf[0] = '\0'; |
| else |
| sprintf (minbuf, ".%d", minor_vno); |
| |
| if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc) |
| { |
| char *n; |
| |
| alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf); |
| n = bfd_realloc (namebuf, alc + 1); |
| if (n == NULL) |
| { |
| free (namebuf); |
| return FALSE; |
| } |
| p = n + (p - namebuf); |
| namebuf = n; |
| } |
| |
| strcpy (p, majbuf); |
| strcat (p, minbuf); |
| } |
| |
| namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1); |
| if (namecopy == NULL) |
| { |
| free (namebuf); |
| return FALSE; |
| } |
| strcpy (namecopy, namebuf); |
| free (namebuf); |
| needed->name = namecopy; |
| |
| needed->next = NULL; |
| |
| for (pp = &sunos_hash_table (info)->needed; |
| *pp != NULL; |
| pp = &(*pp)->next) |
| ; |
| *pp = needed; |
| } |
| |
| return TRUE; |
| } |
| |
| /* Function to add a single symbol to the linker hash table. This is |
| a wrapper around _bfd_generic_link_add_one_symbol which handles the |
| tweaking needed for dynamic linking support. */ |
| |
| static bfd_boolean |
| sunos_add_one_symbol (struct bfd_link_info *info, |
| bfd *abfd, |
| const char *name, |
| flagword flags, |
| asection *section, |
| bfd_vma value, |
| const char *string, |
| bfd_boolean copy, |
| bfd_boolean collect, |
| struct bfd_link_hash_entry **hashp) |
| { |
| struct sunos_link_hash_entry *h; |
| int new_flag; |
| |
| if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0 |
| || ! bfd_is_und_section (section)) |
| h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy, |
| FALSE); |
| else |
| h = ((struct sunos_link_hash_entry *) |
| bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE)); |
| if (h == NULL) |
| return FALSE; |
| |
| if (hashp != NULL) |
| *hashp = (struct bfd_link_hash_entry *) h; |
| |
| /* Treat a common symbol in a dynamic object as defined in the .bss |
| section of the dynamic object. We don't want to allocate space |
| for it in our process image. */ |
| if ((abfd->flags & DYNAMIC) != 0 |
| && bfd_is_com_section (section)) |
| section = obj_bsssec (abfd); |
| |
| if (! bfd_is_und_section (section) |
| && h->root.root.type != bfd_link_hash_new |
| && h->root.root.type != bfd_link_hash_undefined |
| && h->root.root.type != bfd_link_hash_defweak) |
| { |
| /* We are defining the symbol, and it is already defined. This |
| is a potential multiple definition error. */ |
| if ((abfd->flags & DYNAMIC) != 0) |
| { |
| /* The definition we are adding is from a dynamic object. |
| We do not want this new definition to override the |
| existing definition, so we pretend it is just a |
| reference. */ |
| section = bfd_und_section_ptr; |
| } |
| else if (h->root.root.type == bfd_link_hash_defined |
| && h->root.root.u.def.section->owner != NULL |
| && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| { |
| /* The existing definition is from a dynamic object. We |
| want to override it with the definition we just found. |
| Clobber the existing definition. */ |
| h->root.root.type = bfd_link_hash_undefined; |
| h->root.root.u.undef.abfd = h->root.root.u.def.section->owner; |
| } |
| else if (h->root.root.type == bfd_link_hash_common |
| && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0) |
| { |
| /* The existing definition is from a dynamic object. We |
| want to override it with the definition we just found. |
| Clobber the existing definition. We can't set it to new, |
| because it is on the undefined list. */ |
| h->root.root.type = bfd_link_hash_undefined; |
| h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner; |
| } |
| } |
| |
| if ((abfd->flags & DYNAMIC) != 0 |
| && abfd->xvec == info->hash->creator |
| && (h->flags & SUNOS_CONSTRUCTOR) != 0) |
| /* The existing symbol is a constructor symbol, and this symbol |
| is from a dynamic object. A constructor symbol is actually a |
| definition, although the type will be bfd_link_hash_undefined |
| at this point. We want to ignore the definition from the |
| dynamic object. */ |
| section = bfd_und_section_ptr; |
| else if ((flags & BSF_CONSTRUCTOR) != 0 |
| && (abfd->flags & DYNAMIC) == 0 |
| && h->root.root.type == bfd_link_hash_defined |
| && h->root.root.u.def.section->owner != NULL |
| && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| /* The existing symbol is defined by a dynamic object, and this |
| is a constructor symbol. As above, we want to force the use |
| of the constructor symbol from the regular object. */ |
| h->root.root.type = bfd_link_hash_new; |
| |
| /* Do the usual procedure for adding a symbol. */ |
| if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, |
| value, string, copy, collect, |
| hashp)) |
| return FALSE; |
| |
| if (abfd->xvec == info->hash->creator) |
| { |
| /* Set a flag in the hash table entry indicating the type of |
| reference or definition we just found. Keep a count of the |
| number of dynamic symbols we find. A dynamic symbol is one |
| which is referenced or defined by both a regular object and a |
| shared object. */ |
| if ((abfd->flags & DYNAMIC) == 0) |
| { |
| if (bfd_is_und_section (section)) |
| new_flag = SUNOS_REF_REGULAR; |
| else |
| new_flag = SUNOS_DEF_REGULAR; |
| } |
| else |
| { |
| if (bfd_is_und_section (section)) |
| new_flag = SUNOS_REF_DYNAMIC; |
| else |
| new_flag = SUNOS_DEF_DYNAMIC; |
| } |
| h->flags |= new_flag; |
| |
| if (h->dynindx == -1 |
| && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| { |
| ++sunos_hash_table (info)->dynsymcount; |
| h->dynindx = -2; |
| } |
| |
| if ((flags & BSF_CONSTRUCTOR) != 0 |
| && (abfd->flags & DYNAMIC) == 0) |
| h->flags |= SUNOS_CONSTRUCTOR; |
| } |
| |
| return TRUE; |
| } |
| |
| extern const bfd_target MY (vec); |
| |
| /* Return the list of objects needed by BFD. */ |
| |
| struct bfd_link_needed_list * |
| bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
| struct bfd_link_info *info) |
| { |
| if (info->hash->creator != &MY (vec)) |
| return NULL; |
| return sunos_hash_table (info)->needed; |
| } |
| |
| /* Record an assignment made to a symbol by a linker script. We need |
| this in case some dynamic object refers to this symbol. */ |
| |
| bfd_boolean |
| bfd_sunos_record_link_assignment (bfd *output_bfd, |
| struct bfd_link_info *info, |
| const char *name) |
| { |
| struct sunos_link_hash_entry *h; |
| |
| if (output_bfd->xvec != &MY(vec)) |
| return TRUE; |
| |
| /* This is called after we have examined all the input objects. If |
| the symbol does not exist, it merely means that no object refers |
| to it, and we can just ignore it at this point. */ |
| h = sunos_link_hash_lookup (sunos_hash_table (info), name, |
| FALSE, FALSE, FALSE); |
| if (h == NULL) |
| return TRUE; |
| |
| /* In a shared library, the __DYNAMIC symbol does not appear in the |
| dynamic symbol table. */ |
| if (! info->shared || strcmp (name, "__DYNAMIC") != 0) |
| { |
| h->flags |= SUNOS_DEF_REGULAR; |
| |
| if (h->dynindx == -1) |
| { |
| ++sunos_hash_table (info)->dynsymcount; |
| h->dynindx = -2; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| /* Scan the relocs for an input section using standard relocs. We |
| need to figure out what to do for each reloc against a dynamic |
| symbol. If the symbol is in the .text section, an entry is made in |
| the procedure linkage table. Note that this will do the wrong |
| thing if the symbol is actually data; I don't think the Sun 3 |
| native linker handles this case correctly either. If the symbol is |
| not in the .text section, we must preserve the reloc as a dynamic |
| reloc. FIXME: We should also handle the PIC relocs here by |
| building global offset table entries. */ |
| |
| static bfd_boolean |
| sunos_scan_std_relocs (struct bfd_link_info *info, |
| bfd *abfd, |
| asection *sec ATTRIBUTE_UNUSED, |
| const struct reloc_std_external *relocs, |
| bfd_size_type rel_size) |
| { |
| bfd *dynobj; |
| asection *splt = NULL; |
| asection *srel = NULL; |
| struct sunos_link_hash_entry **sym_hashes; |
| const struct reloc_std_external *rel, *relend; |
| |
| /* We only know how to handle m68k plt entries. */ |
| if (bfd_get_arch (abfd) != bfd_arch_m68k) |
| { |
| bfd_set_error (bfd_error_invalid_target); |
| return FALSE; |
| } |
| |
| dynobj = NULL; |
| |
| sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| |
| relend = relocs + rel_size / RELOC_STD_SIZE; |
| for (rel = relocs; rel < relend; rel++) |
| { |
| int r_index; |
| struct sunos_link_hash_entry *h; |
| |
| /* We only want relocs against external symbols. */ |
| if (bfd_header_big_endian (abfd)) |
| { |
| if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0) |
| continue; |
| } |
| else |
| { |
| if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0) |
| continue; |
| } |
| |
| /* Get the symbol index. */ |
| if (bfd_header_big_endian (abfd)) |
| r_index = ((rel->r_index[0] << 16) |
| | (rel->r_index[1] << 8) |
| | rel->r_index[2]); |
| else |
| r_index = ((rel->r_index[2] << 16) |
| | (rel->r_index[1] << 8) |
| | rel->r_index[0]); |
| |
| /* Get the hash table entry. */ |
| h = sym_hashes[r_index]; |
| if (h == NULL) |
| /* This should not normally happen, but it will in any case |
| be caught in the relocation phase. */ |
| continue; |
| |
| /* At this point common symbols have already been allocated, so |
| we don't have to worry about them. We need to consider that |
| we may have already seen this symbol and marked it undefined; |
| if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| will be zero. */ |
| if (h->root.root.type != bfd_link_hash_defined |
| && h->root.root.type != bfd_link_hash_defweak |
| && h->root.root.type != bfd_link_hash_undefined) |
| continue; |
| |
| if ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| || (h->flags & SUNOS_DEF_REGULAR) != 0) |
| continue; |
| |
| if (dynobj == NULL) |
| { |
| asection *sgot; |
| |
| if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| return FALSE; |
| dynobj = sunos_hash_table (info)->dynobj; |
| splt = bfd_get_section_by_name (dynobj, ".plt"); |
| srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (splt != NULL && srel != NULL); |
| |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (sgot != NULL); |
| if (sgot->size == 0) |
| sgot->size = BYTES_IN_WORD; |
| sunos_hash_table (info)->got_needed = TRUE; |
| } |
| |
| BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0); |
| BFD_ASSERT (h->plt_offset != 0 |
| || ((h->root.root.type == bfd_link_hash_defined |
| || h->root.root.type == bfd_link_hash_defweak) |
| ? (h->root.root.u.def.section->owner->flags |
| & DYNAMIC) != 0 |
| : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| |
| /* This reloc is against a symbol defined only by a dynamic |
| object. */ |
| if (h->root.root.type == bfd_link_hash_undefined) |
| /* Presumably this symbol was marked as being undefined by |
| an earlier reloc. */ |
| srel->size += RELOC_STD_SIZE; |
| else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| { |
| bfd *sub; |
| |
| /* This reloc is not in the .text section. It must be |
| copied into the dynamic relocs. We mark the symbol as |
| being undefined. */ |
| srel->size += RELOC_STD_SIZE; |
| sub = h->root.root.u.def.section->owner; |
| h->root.root.type = bfd_link_hash_undefined; |
| h->root.root.u.undef.abfd = sub; |
| } |
| else |
| { |
| /* This symbol is in the .text section. We must give it an |
| entry in the procedure linkage table, if we have not |
| already done so. We change the definition of the symbol |
| to the .plt section; this will cause relocs against it to |
| be handled correctly. */ |
| if (h->plt_offset == 0) |
| { |
| if (splt->size == 0) |
| splt->size = M68K_PLT_ENTRY_SIZE; |
| h->plt_offset = splt->size; |
| |
| if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| h->root.root.u.def.section = splt; |
| h->root.root.u.def.value = splt->size; |
| } |
| |
| splt->size += M68K_PLT_ENTRY_SIZE; |
| |
| /* We may also need a dynamic reloc entry. */ |
| if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| srel->size += RELOC_STD_SIZE; |
| } |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| /* Scan the relocs for an input section using extended relocs. We |
| need to figure out what to do for each reloc against a dynamic |
| symbol. If the reloc is a WDISP30, and the symbol is in the .text |
| section, an entry is made in the procedure linkage table. |
| Otherwise, we must preserve the reloc as a dynamic reloc. */ |
| |
| static bfd_boolean |
| sunos_scan_ext_relocs (struct bfd_link_info *info, |
| bfd *abfd, |
| asection *sec ATTRIBUTE_UNUSED, |
| const struct reloc_ext_external *relocs, |
| bfd_size_type rel_size) |
| { |
| bfd *dynobj; |
| struct sunos_link_hash_entry **sym_hashes; |
| const struct reloc_ext_external *rel, *relend; |
| asection *splt = NULL; |
| asection *sgot = NULL; |
| asection *srel = NULL; |
| bfd_size_type amt; |
| |
| /* We only know how to handle SPARC plt entries. */ |
| if (bfd_get_arch (abfd) != bfd_arch_sparc) |
| { |
| bfd_set_error (bfd_error_invalid_target); |
| return FALSE; |
| } |
| |
| dynobj = NULL; |
| |
| sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| |
| relend = relocs + rel_size / RELOC_EXT_SIZE; |
| for (rel = relocs; rel < relend; rel++) |
| { |
| unsigned int r_index; |
| int r_extern; |
| int r_type; |
| struct sunos_link_hash_entry *h = NULL; |
| |
| /* Swap in the reloc information. */ |
| if (bfd_header_big_endian (abfd)) |
| { |
| r_index = ((rel->r_index[0] << 16) |
| | (rel->r_index[1] << 8) |
| | rel->r_index[2]); |
| r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
| r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| } |
| else |
| { |
| r_index = ((rel->r_index[2] << 16) |
| | (rel->r_index[1] << 8) |
| | rel->r_index[0]); |
| r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
| r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| } |
| |
| if (r_extern) |
| { |
| h = sym_hashes[r_index]; |
| if (h == NULL) |
| { |
| /* This should not normally happen, but it will in any |
| case be caught in the relocation phase. */ |
| continue; |
| } |
| } |
| |
| /* If this is a base relative reloc, we need to make an entry in |
| the .got section. */ |
| if (r_type == RELOC_BASE10 |
| || r_type == RELOC_BASE13 |
| || r_type == RELOC_BASE22) |
| { |
| if (dynobj == NULL) |
| { |
| if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| return FALSE; |
| dynobj = sunos_hash_table (info)->dynobj; |
| splt = bfd_get_section_by_name (dynobj, ".plt"); |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| |
| /* Make sure we have an initial entry in the .got table. */ |
| if (sgot->size == 0) |
| sgot->size = BYTES_IN_WORD; |
| sunos_hash_table (info)->got_needed = TRUE; |
| } |
| |
| if (r_extern) |
| { |
| if (h->got_offset != 0) |
| continue; |
| |
| h->got_offset = sgot->size; |
| } |
| else |
| { |
| if (r_index >= bfd_get_symcount (abfd)) |
| /* This is abnormal, but should be caught in the |
| relocation phase. */ |
| continue; |
| |
| if (adata (abfd).local_got_offsets == NULL) |
| { |
| amt = bfd_get_symcount (abfd); |
| amt *= sizeof (bfd_vma); |
| adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt); |
| if (adata (abfd).local_got_offsets == NULL) |
| return FALSE; |
| } |
| |
| if (adata (abfd).local_got_offsets[r_index] != 0) |
| continue; |
| |
| adata (abfd).local_got_offsets[r_index] = sgot->size; |
| } |
| |
| sgot->size += BYTES_IN_WORD; |
| |
| /* If we are making a shared library, or if the symbol is |
| defined by a dynamic object, we will need a dynamic reloc |
| entry. */ |
| if (info->shared |
| || (h != NULL |
| && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| srel->size += RELOC_EXT_SIZE; |
| |
| continue; |
| } |
| |
| /* Otherwise, we are only interested in relocs against symbols |
| defined in dynamic objects but not in regular objects. We |
| only need to consider relocs against external symbols. */ |
| if (! r_extern) |
| { |
| /* But, if we are creating a shared library, we need to |
| generate an absolute reloc. */ |
| if (info->shared) |
| { |
| if (dynobj == NULL) |
| { |
| if (! sunos_create_dynamic_sections (abfd, info, TRUE)) |
| return FALSE; |
| dynobj = sunos_hash_table (info)->dynobj; |
| splt = bfd_get_section_by_name (dynobj, ".plt"); |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| } |
| |
| srel->size += RELOC_EXT_SIZE; |
| } |
| |
| continue; |
| } |
| |
| /* At this point common symbols have already been allocated, so |
| we don't have to worry about them. We need to consider that |
| we may have already seen this symbol and marked it undefined; |
| if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| will be zero. */ |
| if (h->root.root.type != bfd_link_hash_defined |
| && h->root.root.type != bfd_link_hash_defweak |
| && h->root.root.type != bfd_link_hash_undefined) |
| continue; |
| |
| if (r_type != RELOC_JMP_TBL |
| && ! info->shared |
| && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| || (h->flags & SUNOS_DEF_REGULAR) != 0)) |
| continue; |
| |
| if (r_type == RELOC_JMP_TBL |
| && ! info->shared |
| && (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| /* This symbol is apparently undefined. Don't do anything |
| here; just let the relocation routine report an undefined |
| symbol. */ |
| continue; |
| } |
| |
| if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) |
| continue; |
| |
| if (dynobj == NULL) |
| { |
| if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| return FALSE; |
| dynobj = sunos_hash_table (info)->dynobj; |
| splt = bfd_get_section_by_name (dynobj, ".plt"); |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| |
| /* Make sure we have an initial entry in the .got table. */ |
| if (sgot->size == 0) |
| sgot->size = BYTES_IN_WORD; |
| sunos_hash_table (info)->got_needed = TRUE; |
| } |
| |
| BFD_ASSERT (r_type == RELOC_JMP_TBL |
| || info->shared |
| || (h->flags & SUNOS_REF_REGULAR) != 0); |
| BFD_ASSERT (r_type == RELOC_JMP_TBL |
| || info->shared |
| || h->plt_offset != 0 |
| || ((h->root.root.type == bfd_link_hash_defined |
| || h->root.root.type == bfd_link_hash_defweak) |
| ? (h->root.root.u.def.section->owner->flags |
| & DYNAMIC) != 0 |
| : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| |
| /* This reloc is against a symbol defined only by a dynamic |
| object, or it is a jump table reloc from PIC compiled code. */ |
| |
| if (r_type != RELOC_JMP_TBL |
| && h->root.root.type == bfd_link_hash_undefined) |
| /* Presumably this symbol was marked as being undefined by |
| an earlier reloc. */ |
| srel->size += RELOC_EXT_SIZE; |
| |
| else if (r_type != RELOC_JMP_TBL |
| && (h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| { |
| bfd *sub; |
| |
| /* This reloc is not in the .text section. It must be |
| copied into the dynamic relocs. We mark the symbol as |
| being undefined. */ |
| srel->size += RELOC_EXT_SIZE; |
| if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| sub = h->root.root.u.def.section->owner; |
| h->root.root.type = bfd_link_hash_undefined; |
| h->root.root.u.undef.abfd = sub; |
| } |
| } |
| else |
| { |
| /* This symbol is in the .text section. We must give it an |
| entry in the procedure linkage table, if we have not |
| already done so. We change the definition of the symbol |
| to the .plt section; this will cause relocs against it to |
| be handled correctly. */ |
| if (h->plt_offset == 0) |
| { |
| if (splt->size == 0) |
| splt->size = SPARC_PLT_ENTRY_SIZE; |
| h->plt_offset = splt->size; |
| |
| if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| if (h->root.root.type == bfd_link_hash_undefined) |
| h->root.root.type = bfd_link_hash_defined; |
| h->root.root.u.def.section = splt; |
| h->root.root.u.def.value = splt->size; |
| } |
| |
| splt->size += SPARC_PLT_ENTRY_SIZE; |
| |
| /* We will also need a dynamic reloc entry, unless this |
| is a JMP_TBL reloc produced by linking PIC compiled |
| code, and we are not making a shared library. */ |
| if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| srel->size += RELOC_EXT_SIZE; |
| } |
| |
| /* If we are creating a shared library, we need to copy over |
| any reloc other than a jump table reloc. */ |
| if (info->shared && r_type != RELOC_JMP_TBL) |
| srel->size += RELOC_EXT_SIZE; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| /* Scan the relocs for an input section. */ |
| |
| static bfd_boolean |
| sunos_scan_relocs (struct bfd_link_info *info, |
| bfd *abfd, |
| asection *sec, |
| bfd_size_type rel_size) |
| { |
| void * relocs; |
| void * free_relocs = NULL; |
| |
| if (rel_size == 0) |
| return TRUE; |
| |
| if (! info->keep_memory) |
| relocs = free_relocs = bfd_malloc (rel_size); |
| else |
| { |
| struct aout_section_data_struct *n; |
| bfd_size_type amt = sizeof (struct aout_section_data_struct); |
| |
| n = bfd_alloc (abfd, amt); |
| if (n == NULL) |
| relocs = NULL; |
| else |
| { |
| set_aout_section_data (sec, n); |
| relocs = bfd_malloc (rel_size); |
| aout_section_data (sec)->relocs = relocs; |
| } |
| } |
| if (relocs == NULL) |
| return FALSE; |
| |
| if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 |
| || bfd_bread (relocs, rel_size, abfd) != rel_size) |
| goto error_return; |
| |
| if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE) |
| { |
| if (! sunos_scan_std_relocs (info, abfd, sec, |
| (struct reloc_std_external *) relocs, |
| rel_size)) |
| goto error_return; |
| } |
| else |
| { |
| if (! sunos_scan_ext_relocs (info, abfd, sec, |
| (struct reloc_ext_external *) relocs, |
| rel_size)) |
| goto error_return; |
| } |
| |
| if (free_relocs != NULL) |
| free (free_relocs); |
| |
| return TRUE; |
| |
| error_return: |
| if (free_relocs != NULL) |
| free (free_relocs); |
| return FALSE; |
| } |
| |
| /* Build the hash table of dynamic symbols, and to mark as written all |
| symbols from dynamic objects which we do not plan to write out. */ |
| |
| static bfd_boolean |
| sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data) |
| { |
| struct bfd_link_info *info = (struct bfd_link_info *) data; |
| |
| if (h->root.root.type == bfd_link_hash_warning) |
| h = (struct sunos_link_hash_entry *) h->root.root.u.i.link; |
| |
| /* Set the written flag for symbols we do not want to write out as |
| part of the regular symbol table. This is all symbols which are |
| not defined in a regular object file. For some reason symbols |
| which are referenced by a regular object and defined by a dynamic |
| object do not seem to show up in the regular symbol table. It is |
| possible for a symbol to have only SUNOS_REF_REGULAR set here, it |
| is an undefined symbol which was turned into a common symbol |
| because it was found in an archive object which was not included |
| in the link. */ |
| if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| && strcmp (h->root.root.root.string, "__DYNAMIC") != 0) |
| h->root.written = TRUE; |
| |
| /* If this symbol is defined by a dynamic object and referenced by a |
| regular object, see whether we gave it a reasonable value while |
| scanning the relocs. */ |
| if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| && (h->flags & SUNOS_REF_REGULAR) != 0) |
| { |
| if ((h->root.root.type == bfd_link_hash_defined |
| || h->root.root.type == bfd_link_hash_defweak) |
| && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| && h->root.root.u.def.section->output_section == NULL) |
| { |
| bfd *sub; |
| |
| /* This symbol is currently defined in a dynamic section |
| which is not being put into the output file. This |
| implies that there is no reloc against the symbol. I'm |
| not sure why this case would ever occur. In any case, we |
| change the symbol to be undefined. */ |
| sub = h->root.root.u.def.section->owner; |
| h->root.root.type = bfd_link_hash_undefined; |
| h->root.root.u.undef.abfd = sub; |
| } |
| } |
| |
| /* If this symbol is defined or referenced by a regular file, add it |
| to the dynamic symbols. */ |
| if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| { |
| asection *s; |
| size_t len; |
| bfd_byte *contents; |
| unsigned char *name; |
| unsigned long hash; |
| bfd *dynobj; |
| |
| BFD_ASSERT (h->dynindx == -2); |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| |
| h->dynindx = sunos_hash_table (info)->dynsymcount; |
| ++sunos_hash_table (info)->dynsymcount; |
| |
| len = strlen (h->root.root.root.string); |
| |
| /* We don't bother to construct a BFD hash table for the strings |
| which are the names of the dynamic symbols. Using a hash |
| table for the regular symbols is beneficial, because the |
| regular symbols includes the debugging symbols, which have |
| long names and are often duplicated in several object files. |
| There are no debugging symbols in the dynamic symbols. */ |
| s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| BFD_ASSERT (s != NULL); |
| contents = bfd_realloc (s->contents, s->size + len + 1); |
| if (contents == NULL) |
| return FALSE; |
| s->contents = contents; |
| |
| h->dynstr_index = s->size; |
| strcpy ((char *) contents + s->size, h->root.root.root.string); |
| s->size += len + 1; |
| |
| /* Add it to the dynamic hash table. */ |
| name = (unsigned char *) h->root.root.root.string; |
| hash = 0; |
| while (*name != '\0') |
| hash = (hash << 1) + *name++; |
| hash &= 0x7fffffff; |
| hash %= sunos_hash_table (info)->bucketcount; |
| |
| s = bfd_get_section_by_name (dynobj, ".hash"); |
| BFD_ASSERT (s != NULL); |
| |
| if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1) |
| PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE); |
| else |
| { |
| bfd_vma next; |
| |
| next = GET_WORD (dynobj, |
| (s->contents |
| + hash * HASH_ENTRY_SIZE |
| + BYTES_IN_WORD)); |
| PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE, |
| s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| PUT_WORD (dynobj, h->dynindx, s->contents + s->size); |
| PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD); |
| s->size += HASH_ENTRY_SIZE; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| /* Set up the sizes and contents of the dynamic sections created in |
| sunos_add_dynamic_symbols. This is called by the SunOS linker |
| emulation before_allocation routine. We must set the sizes of the |
| sections before the linker sets the addresses of the various |
| sections. This unfortunately requires reading all the relocs so |
| that we can work out which ones need to become dynamic relocs. If |
| info->keep_memory is TRUE, we keep the relocs in memory; otherwise, |
| we discard them, and will read them again later. */ |
| |
| bfd_boolean |
| bfd_sunos_size_dynamic_sections (bfd *output_bfd, |
| struct bfd_link_info *info, |
| asection **sdynptr, |
| asection **sneedptr, |
| asection **srulesptr) |
| { |
| bfd *dynobj; |
| bfd_size_type dynsymcount; |
| struct sunos_link_hash_entry *h; |
| asection *s; |
| size_t bucketcount; |
| bfd_size_type hashalloc; |
| size_t i; |
| bfd *sub; |
| |
| *sdynptr = NULL; |
| *sneedptr = NULL; |
| *srulesptr = NULL; |
| |
| if (info->relocatable) |
| return TRUE; |
| |
| if (output_bfd->xvec != &MY(vec)) |
| return TRUE; |
| |
| /* Look through all the input BFD's and read their relocs. It would |
| be better if we didn't have to do this, but there is no other way |
| to determine the number of dynamic relocs we need, and, more |
| importantly, there is no other way to know which symbols should |
| get an entry in the procedure linkage table. */ |
| for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
| { |
| if ((sub->flags & DYNAMIC) == 0 |
| && sub->xvec == output_bfd->xvec) |
| { |
| if (! sunos_scan_relocs (info, sub, obj_textsec (sub), |
| exec_hdr (sub)->a_trsize) |
| || ! sunos_scan_relocs (info, sub, obj_datasec (sub), |
| exec_hdr (sub)->a_drsize)) |
| return FALSE; |
| } |
| } |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| dynsymcount = sunos_hash_table (info)->dynsymcount; |
| |
| /* If there were no dynamic objects in the link, and we don't need |
| to build a global offset table, there is nothing to do here. */ |
| if (! sunos_hash_table (info)->dynamic_sections_needed |
| && ! sunos_hash_table (info)->got_needed) |
| return TRUE; |
| |
| /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */ |
| h = sunos_link_hash_lookup (sunos_hash_table (info), |
| "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE); |
| if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0) |
| { |
| h->flags |= SUNOS_DEF_REGULAR; |
| if (h->dynindx == -1) |
| { |
| ++sunos_hash_table (info)->dynsymcount; |
| h->dynindx = -2; |
| } |
| h->root.root.type = bfd_link_hash_defined; |
| h->root.root.u.def.section = bfd_get_section_by_name (dynobj, ".got"); |
| |
| /* If the .got section is more than 0x1000 bytes, we set |
| __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section, |
| so that 13 bit relocations have a greater chance of working. */ |
| s = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (s != NULL); |
| if (s->size >= 0x1000) |
| h->root.root.u.def.value = 0x1000; |
| else |
| h->root.root.u.def.value = 0; |
| |
| sunos_hash_table (info)->got_base = h->root.root.u.def.value; |
| } |
| |
| /* If there are any shared objects in the link, then we need to set |
| up the dynamic linking information. */ |
| if (sunos_hash_table (info)->dynamic_sections_needed) |
| { |
| *sdynptr = bfd_get_section_by_name (dynobj, ".dynamic"); |
| |
| /* The .dynamic section is always the same size. */ |
| s = *sdynptr; |
| BFD_ASSERT (s != NULL); |
| s->size = (sizeof (struct external_sun4_dynamic) |
| + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE |
| + sizeof (struct external_sun4_dynamic_link)); |
| |
| /* Set the size of the .dynsym and .hash sections. We counted |
| the number of dynamic symbols as we read the input files. We |
| will build the dynamic symbol table (.dynsym) and the hash |
| table (.hash) when we build the final symbol table, because |
| until then we do not know the correct value to give the |
| symbols. We build the dynamic symbol string table (.dynstr) |
| in a traversal of the symbol table using |
| sunos_scan_dynamic_symbol. */ |
| s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| BFD_ASSERT (s != NULL); |
| s->size = dynsymcount * sizeof (struct external_nlist); |
| s->contents = bfd_alloc (output_bfd, s->size); |
| if (s->contents == NULL && s->size != 0) |
| return FALSE; |
| |
| /* The number of buckets is just the number of symbols divided |
| by four. To compute the final size of the hash table, we |
| must actually compute the hash table. Normally we need |
| exactly as many entries in the hash table as there are |
| dynamic symbols, but if some of the buckets are not used we |
| will need additional entries. In the worst case, every |
| symbol will hash to the same bucket, and we will need |
| BUCKETCOUNT - 1 extra entries. */ |
| if (dynsymcount >= 4) |
| bucketcount = dynsymcount / 4; |
| else if (dynsymcount > 0) |
| bucketcount = dynsymcount; |
| else |
| bucketcount = 1; |
| s = bfd_get_section_by_name (dynobj, ".hash"); |
| BFD_ASSERT (s != NULL); |
| hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE; |
| s->contents = bfd_zalloc (dynobj, hashalloc); |
| if (s->contents == NULL && dynsymcount > 0) |
| return FALSE; |
| for (i = 0; i < bucketcount; i++) |
| PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE); |
| s->size = bucketcount * HASH_ENTRY_SIZE; |
| |
| sunos_hash_table (info)->bucketcount = bucketcount; |
| |
| /* Scan all the symbols, place them in the dynamic symbol table, |
| and build the dynamic hash table. We reuse dynsymcount as a |
| counter for the number of symbols we have added so far. */ |
| sunos_hash_table (info)->dynsymcount = 0; |
| sunos_link_hash_traverse (sunos_hash_table (info), |
| sunos_scan_dynamic_symbol, |
| (void *) info); |
| BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount); |
| |
| /* The SunOS native linker seems to align the total size of the |
| symbol strings to a multiple of 8. I don't know if this is |
| important, but it can't hurt much. */ |
| s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| BFD_ASSERT (s != NULL); |
| if ((s->size & 7) != 0) |
| { |
| bfd_size_type add; |
| bfd_byte *contents; |
| |
| add = 8 - (s->size & 7); |
| contents = bfd_realloc (s->contents, s->size + add); |
| if (contents == NULL) |
| return FALSE; |
| memset (contents + s->size, 0, (size_t) add); |
| s->contents = contents; |
| s->size += add; |
| } |
| } |
| |
| /* Now that we have worked out the sizes of the procedure linkage |
| table and the dynamic relocs, allocate storage for them. */ |
| s = bfd_get_section_by_name (dynobj, ".plt"); |
| BFD_ASSERT (s != NULL); |
| if (s->size != 0) |
| { |
| s->contents = bfd_alloc (dynobj, s->size); |
| if (s->contents == NULL) |
| return FALSE; |
| |
| /* Fill in the first entry in the table. */ |
| switch (bfd_get_arch (dynobj)) |
| { |
| case bfd_arch_sparc: |
| memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE); |
| break; |
| |
| case bfd_arch_m68k: |
| memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE); |
| break; |
| |
| default: |
| abort (); |
| } |
| } |
| |
| s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| if (s->size != 0) |
| { |
| s->contents = bfd_alloc (dynobj, s->size); |
| if (s->contents == NULL) |
| return FALSE; |
| } |
| /* We use the reloc_count field to keep track of how many of the |
| relocs we have output so far. */ |
| s->reloc_count = 0; |
| |
| /* Make space for the global offset table. */ |
| s = bfd_get_section_by_name (dynobj, ".got"); |
| s->contents = bfd_alloc (dynobj, s->size); |
| if (s->contents == NULL) |
| return FALSE; |
| |
| *sneedptr = bfd_get_section_by_name (dynobj, ".need"); |
| *srulesptr = bfd_get_section_by_name (dynobj, ".rules"); |
| |
| return TRUE; |
| } |
| |
| /* Link a dynamic object. We actually don't have anything to do at |
| this point. This entry point exists to prevent the regular linker |
| code from doing anything with the object. */ |
| |
| static bfd_boolean |
| sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| bfd *abfd ATTRIBUTE_UNUSED) |
| { |
| return TRUE; |
| } |
| |
| /* Write out a dynamic symbol. This is called by the final traversal |
| over the symbol table. */ |
| |
| static bfd_boolean |
| sunos_write_dynamic_symbol (bfd *output_bfd, |
| struct bfd_link_info *info, |
| struct aout_link_hash_entry *harg) |
| { |
| struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| int type; |
| bfd_vma val; |
| asection *s; |
| struct external_nlist *outsym; |
| |
| /* If this symbol is in the procedure linkage table, fill in the |
| table entry. */ |
| if (h->plt_offset != 0) |
| { |
| bfd *dynobj; |
| asection *splt; |
| bfd_byte *p; |
| bfd_vma r_address; |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| splt = bfd_get_section_by_name (dynobj, ".plt"); |
| p = splt->contents + h->plt_offset; |
| |
| s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| |
| r_address = (splt->output_section->vma |
| + splt->output_offset |
| + h->plt_offset); |
| |
| switch (bfd_get_arch (output_bfd)) |
| { |
| case bfd_arch_sparc: |
| if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p); |
| bfd_put_32 (output_bfd, |
| (SPARC_PLT_ENTRY_WORD1 |
| + (((- (h->plt_offset + 4) >> 2) |
| & 0x3fffffff))), |
| p + 4); |
| bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count, |
| p + 8); |
| } |
| else |
| { |
| val = (h->root.root.u.def.section->output_section->vma |
| + h->root.root.u.def.section->output_offset |
| + h->root.root.u.def.value); |
| bfd_put_32 (output_bfd, |
| SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff), |
| p); |
| bfd_put_32 (output_bfd, |
| SPARC_PLT_PIC_WORD1 + (val & 0x3ff), |
| p + 4); |
| bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8); |
| } |
| break; |
| |
| case bfd_arch_m68k: |
| if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0) |
| abort (); |
| bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p); |
| bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2); |
| bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6); |
| r_address += 2; |
| break; |
| |
| default: |
| abort (); |
| } |
| |
| /* We also need to add a jump table reloc, unless this is the |
| result of a JMP_TBL reloc from PIC compiled code. */ |
| if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| BFD_ASSERT (h->dynindx >= 0); |
| BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| < s->size); |
| p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd); |
| if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE) |
| { |
| struct reloc_std_external *srel; |
| |
| srel = (struct reloc_std_external *) p; |
| PUT_WORD (output_bfd, r_address, srel->r_address); |
| if (bfd_header_big_endian (output_bfd)) |
| { |
| srel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| srel->r_index[2] = (bfd_byte) (h->dynindx); |
| srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG |
| | RELOC_STD_BITS_JMPTABLE_BIG); |
| } |
| else |
| { |
| srel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| srel->r_index[0] = (bfd_byte)h->dynindx; |
| srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE |
| | RELOC_STD_BITS_JMPTABLE_LITTLE); |
| } |
| } |
| else |
| { |
| struct reloc_ext_external *erel; |
| |
| erel = (struct reloc_ext_external *) p; |
| PUT_WORD (output_bfd, r_address, erel->r_address); |
| if (bfd_header_big_endian (output_bfd)) |
| { |
| erel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| erel->r_index[2] = (bfd_byte)h->dynindx; |
| erel->r_type[0] = |
| (RELOC_EXT_BITS_EXTERN_BIG |
| | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| } |
| else |
| { |
| erel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| erel->r_index[0] = (bfd_byte)h->dynindx; |
| erel->r_type[0] = |
| (RELOC_EXT_BITS_EXTERN_LITTLE |
| | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| } |
| PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend); |
| } |
| |
| ++s->reloc_count; |
| } |
| } |
| |
| /* If this is not a dynamic symbol, we don't have to do anything |
| else. We only check this after handling the PLT entry, because |
| we can have a PLT entry for a nondynamic symbol when linking PIC |
| compiled code from a regular object. */ |
| if (h->dynindx < 0) |
| return TRUE; |
| |
| switch (h->root.root.type) |
| { |
| default: |
| case bfd_link_hash_new: |
| abort (); |
| /* Avoid variable not initialized warnings. */ |
| return TRUE; |
| case bfd_link_hash_undefined: |
| type = N_UNDF | N_EXT; |
| val = 0; |
| break; |
| case bfd_link_hash_defined: |
| case bfd_link_hash_defweak: |
| { |
| asection *sec; |
| asection *output_section; |
| |
| sec = h->root.root.u.def.section; |
| output_section = sec->output_section; |
| BFD_ASSERT (bfd_is_abs_section (output_section) |
| || output_section->owner == output_bfd); |
| if (h->plt_offset != 0 |
| && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| { |
| type = N_UNDF | N_EXT; |
| val = 0; |
| } |
| else |
| { |
| if (output_section == obj_textsec (output_bfd)) |
| type = (h->root.root.type == bfd_link_hash_defined |
| ? N_TEXT |
| : N_WEAKT); |
| else if (output_section == obj_datasec (output_bfd)) |
| type = (h->root.root.type == bfd_link_hash_defined |
| ? N_DATA |
| : N_WEAKD); |
| else if (output_section == obj_bsssec (output_bfd)) |
| type = (h->root.root.type == bfd_link_hash_defined |
| ? N_BSS |
| : N_WEAKB); |
| else |
| type = (h->root.root.type == bfd_link_hash_defined |
| ? N_ABS |
| : N_WEAKA); |
| type |= N_EXT; |
| val = (h->root.root.u.def.value |
| + output_section->vma |
| + sec->output_offset); |
| } |
| } |
| break; |
| case bfd_link_hash_common: |
| type = N_UNDF | N_EXT; |
| val = h->root.root.u.c.size; |
| break; |
| case bfd_link_hash_undefweak: |
| type = N_WEAKU; |
| val = 0; |
| break; |
| case bfd_link_hash_indirect: |
| case bfd_link_hash_warning: |
| /* FIXME: Ignore these for now. The circumstances under which |
| they should be written out are not clear to me. */ |
| return TRUE; |
| } |
| |
| s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym"); |
| BFD_ASSERT (s != NULL); |
| outsym = ((struct external_nlist *) |
| (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE)); |
| |
| H_PUT_8 (output_bfd, type, outsym->e_type); |
| H_PUT_8 (output_bfd, 0, outsym->e_other); |
| |
| /* FIXME: The native linker doesn't use 0 for desc. It seems to use |
| one less than the desc value in the shared library, although that |
| seems unlikely. */ |
| H_PUT_16 (output_bfd, 0, outsym->e_desc); |
| |
| PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx); |
| PUT_WORD (output_bfd, val, outsym->e_value); |
| |
| return TRUE; |
| } |
| |
| /* This is called for each reloc against an external symbol. If this |
| is a reloc which are are going to copy as a dynamic reloc, then |
| copy it over, and tell the caller to not bother processing this |
| reloc. */ |
| |
| static bfd_boolean |
| sunos_check_dynamic_reloc (struct bfd_link_info *info, |
| bfd *input_bfd, |
| asection *input_section, |
| struct aout_link_hash_entry *harg, |
| void * reloc, |
| bfd_byte *contents ATTRIBUTE_UNUSED, |
| bfd_boolean *skip, |
| bfd_vma *relocationp) |
| { |
| struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| bfd *dynobj; |
| bfd_boolean baserel; |
| bfd_boolean jmptbl; |
| bfd_boolean pcrel; |
| asection *s; |
| bfd_byte *p; |
| long indx; |
| |
| *skip = FALSE; |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| |
| if (h != NULL |
| && h->plt_offset != 0 |
| && (info->shared |
| || (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| { |
| asection *splt; |
| |
| /* Redirect the relocation to the PLT entry. */ |
| splt = bfd_get_section_by_name (dynobj, ".plt"); |
| *relocationp = (splt->output_section->vma |
| + splt->output_offset |
| + h->plt_offset); |
| } |
| |
| if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| { |
| struct reloc_std_external *srel; |
| |
| srel = (struct reloc_std_external *) reloc; |
| if (bfd_header_big_endian (input_bfd)) |
| { |
| baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); |
| jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); |
| pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); |
| } |
| else |
| { |
| baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); |
| jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); |
| pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
| } |
| } |
| else |
| { |
| struct reloc_ext_external *erel; |
| int r_type; |
| |
| erel = (struct reloc_ext_external *) reloc; |
| if (bfd_header_big_endian (input_bfd)) |
| r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| else |
| r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| baserel = (r_type == RELOC_BASE10 |
| || r_type == RELOC_BASE13 |
| || r_type == RELOC_BASE22); |
| jmptbl = r_type == RELOC_JMP_TBL; |
| pcrel = (r_type == RELOC_DISP8 |
| || r_type == RELOC_DISP16 |
| || r_type == RELOC_DISP32 |
| || r_type == RELOC_WDISP30 |
| || r_type == RELOC_WDISP22); |
| /* We don't consider the PC10 and PC22 types to be PC relative, |
| because they are pcrel_offset. */ |
| } |
| |
| if (baserel) |
| { |
| bfd_vma *got_offsetp; |
| asection *sgot; |
| |
| if (h != NULL) |
| got_offsetp = &h->got_offset; |
| else if (adata (input_bfd).local_got_offsets == NULL) |
| got_offsetp = NULL; |
| else |
| { |
| struct reloc_std_external *srel; |
| int r_index; |
| |
| srel = (struct reloc_std_external *) reloc; |
| if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| { |
| if (bfd_header_big_endian (input_bfd)) |
| r_index = ((srel->r_index[0] << 16) |
| | (srel->r_index[1] << 8) |
| | srel->r_index[2]); |
| else |
| r_index = ((srel->r_index[2] << 16) |
| | (srel->r_index[1] << 8) |
| | srel->r_index[0]); |
| } |
| else |
| { |
| struct reloc_ext_external *erel; |
| |
| erel = (struct reloc_ext_external *) reloc; |
| if (bfd_header_big_endian (input_bfd)) |
| r_index = ((erel->r_index[0] << 16) |
| | (erel->r_index[1] << 8) |
| | erel->r_index[2]); |
| else |
| r_index = ((erel->r_index[2] << 16) |
| | (erel->r_index[1] << 8) |
| | erel->r_index[0]); |
| } |
| |
| got_offsetp = adata (input_bfd).local_got_offsets + r_index; |
| } |
| |
| BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0); |
| |
| sgot = bfd_get_section_by_name (dynobj, ".got"); |
| |
| /* We set the least significant bit to indicate whether we have |
| already initialized the GOT entry. */ |
| if ((*got_offsetp & 1) == 0) |
| { |
| if (h == NULL |
| || (! info->shared |
| && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| || (h->flags & SUNOS_DEF_REGULAR) != 0))) |
| PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp); |
| else |
| PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp); |
| |
| if (info->shared |
| || (h != NULL |
| && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| { |
| /* We need to create a GLOB_DAT or 32 reloc to tell the |
| dynamic linker to fill in this entry in the table. */ |
| |
| s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (s != NULL); |
| BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| < s->size); |
| |
| p = (s->contents |
| + s->reloc_count * obj_reloc_entry_size (dynobj)); |
| |
| if (h != NULL) |
| indx = h->dynindx; |
| else |
| indx = 0; |
| |
| if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| { |
| struct reloc_std_external *srel; |
| |
| srel = (struct reloc_std_external *) p; |
| PUT_WORD (dynobj, |
| (*got_offsetp |
| + sgot->output_section->vma |
| + sgot->output_offset), |
| srel->r_address); |
| if (bfd_header_big_endian (dynobj)) |
| { |
| srel->r_index[0] = (bfd_byte) (indx >> 16); |
| srel->r_index[1] = (bfd_byte) (indx >> 8); |
| srel->r_index[2] = (bfd_byte)indx; |
| if (h == NULL) |
| srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG; |
| else |
| srel->r_type[0] = |
| (RELOC_STD_BITS_EXTERN_BIG |
| | RELOC_STD_BITS_BASEREL_BIG |
| | RELOC_STD_BITS_RELATIVE_BIG |
| | (2 << RELOC_STD_BITS_LENGTH_SH_BIG)); |
| } |
| else |
| { |
| srel->r_index[2] = (bfd_byte) (indx >> 16); |
| srel->r_index[1] = (bfd_byte) (indx >> 8); |
| srel->r_index[0] = (bfd_byte)indx; |
| if (h == NULL) |
| srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE; |
| else |
| srel->r_type[0] = |
| (RELOC_STD_BITS_EXTERN_LITTLE |
| | RELOC_STD_BITS_BASEREL_LITTLE |
| | RELOC_STD_BITS_RELATIVE_LITTLE |
| | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE)); |
| } |
| } |
| else |
| { |
| struct reloc_ext_external *erel; |
| |
| erel = (struct reloc_ext_external *) p; |
| PUT_WORD (dynobj, |
| (*got_offsetp |
| + sgot->output_section->vma |
| + sgot->output_offset), |
| erel->r_address); |
| if (bfd_header_big_endian (dynobj)) |
| { |
| erel->r_index[0] = (bfd_byte) (indx >> 16); |
| erel->r_index[1] = (bfd_byte) (indx >> 8); |
| erel->r_index[2] = (bfd_byte)indx; |
| if (h == NULL) |
| erel->r_type[0] = |
| RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG; |
| else |
| erel->r_type[0] = |
| (RELOC_EXT_BITS_EXTERN_BIG |
| | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| } |
| else |
| { |
| erel->r_index[2] = (bfd_byte) (indx >> 16); |
| erel->r_index[1] = (bfd_byte) (indx >> 8); |
| erel->r_index[0] = (bfd_byte)indx; |
| if (h == NULL) |
| erel->r_type[0] = |
| RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE; |
| else |
| erel->r_type[0] = |
| (RELOC_EXT_BITS_EXTERN_LITTLE |
| | (RELOC_GLOB_DAT |
| << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| } |
| PUT_WORD (dynobj, 0, erel->r_addend); |
| } |
| |
| ++s->reloc_count; |
| } |
| |
| *got_offsetp |= 1; |
| } |
| |
| *relocationp = (sgot->vma |
| + (*got_offsetp &~ (bfd_vma) 1) |
| - sunos_hash_table (info)->got_base); |
| |
| /* There is nothing else to do for a base relative reloc. */ |
| return TRUE; |
| } |
| |
| if (! sunos_hash_table (info)->dynamic_sections_needed) |
| return TRUE; |
| if (! info->shared) |
| { |
| if (h == NULL |
| || h->dynindx == -1 |
| || h->root.root.type != bfd_link_hash_undefined |
| || (h->flags & SUNOS_DEF_REGULAR) != 0 |
| || (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0) |
| return TRUE; |
| } |
| else |
| { |
| if (h != NULL |
| && (h->dynindx == -1 |
| || jmptbl |
| || strcmp (h->root.root.root.string, |
| "__GLOBAL_OFFSET_TABLE_") == 0)) |
| return TRUE; |
| } |
| |
| /* It looks like this is a reloc we are supposed to copy. */ |
| |
| s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (s != NULL); |
| BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size); |
| |
| p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj); |
| |
| /* Copy the reloc over. */ |
| memcpy (p, reloc, obj_reloc_entry_size (dynobj)); |
| |
| if (h != NULL) |
| indx = h->dynindx; |
| else |
| indx = 0; |
| |
| /* Adjust the address and symbol index. */ |
| if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| { |
| struct reloc_std_external *srel; |
| |
| srel = (struct reloc_std_external *) p; |
| PUT_WORD (dynobj, |
| (GET_WORD (dynobj, srel->r_address) |
| + input_section->output_section->vma |
| + input_section->output_offset), |
| srel->r_address); |
| if (bfd_header_big_endian (dynobj)) |
| { |
| srel->r_index[0] = (bfd_byte) (indx >> 16); |
| srel->r_index[1] = (bfd_byte) (indx >> 8); |
| srel->r_index[2] = (bfd_byte)indx; |
| } |
| else |
| { |
| srel->r_index[2] = (bfd_byte) (indx >> 16); |
| srel->r_index[1] = (bfd_byte) (indx >> 8); |
| srel->r_index[0] = (bfd_byte)indx; |
| } |
| /* FIXME: We may have to change the addend for a PC relative |
| reloc. */ |
| } |
| else |
| { |
| struct reloc_ext_external *erel; |
| |
| erel = (struct reloc_ext_external *) p; |
| PUT_WORD (dynobj, |
| (GET_WORD (dynobj, erel->r_address) |
| + input_section->output_section->vma |
| + input_section->output_offset), |
| erel->r_address); |
| if (bfd_header_big_endian (dynobj)) |
| { |
| erel->r_index[0] = (bfd_byte) (indx >> 16); |
| erel->r_index[1] = (bfd_byte) (indx >> 8); |
| erel->r_index[2] = (bfd_byte)indx; |
| } |
| else |
| { |
| erel->r_index[2] = (bfd_byte) (indx >> 16); |
| erel->r_index[1] = (bfd_byte) (indx >> 8); |
| erel->r_index[0] = (bfd_byte)indx; |
| } |
| if (pcrel && h != NULL) |
| { |
| /* Adjust the addend for the change in address. */ |
| PUT_WORD (dynobj, |
| (GET_WORD (dynobj, erel->r_addend) |
| - (input_section->output_section->vma |
| + input_section->output_offset |
| - input_section->vma)), |
| erel->r_addend); |
| } |
| } |
| |
| ++s->reloc_count; |
| |
| if (h != NULL) |
| *skip = TRUE; |
| |
| return TRUE; |
| } |
| |
| /* Finish up the dynamic linking information. */ |
| |
| static bfd_boolean |
| sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info) |
| { |
| bfd *dynobj; |
| asection *o; |
| asection *s; |
| asection *sdyn; |
| |
| if (! sunos_hash_table (info)->dynamic_sections_needed |
| && ! sunos_hash_table (info)->got_needed) |
| return TRUE; |
| |
| dynobj = sunos_hash_table (info)->dynobj; |
| |
| sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| BFD_ASSERT (sdyn != NULL); |
| |
| /* Finish up the .need section. The linker emulation code filled it |
| in, but with offsets from the start of the section instead of |
| real addresses. Now that we know the section location, we can |
| fill in the final values. */ |
| s = bfd_get_section_by_name (dynobj, ".need"); |
| if (s != NULL && s->size != 0) |
| { |
| file_ptr filepos; |
| bfd_byte *p; |
| |
| filepos = s->output_section->filepos + s->output_offset; |
| p = s->contents; |
| while (1) |
| { |
| bfd_vma val; |
| |
| PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p); |
| val = GET_WORD (dynobj, p + 12); |
| if (val == 0) |
| break; |
| PUT_WORD (dynobj, val + filepos, p + 12); |
| p += 16; |
| } |
| } |
| |
| /* The first entry in the .got section is the address of the |
| dynamic information, unless this is a shared library. */ |
| s = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (s != NULL); |
| if (info->shared || sdyn->size == 0) |
| PUT_WORD (dynobj, 0, s->contents); |
| else |
| PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset, |
| s->contents); |
| |
| for (o = dynobj->sections; o != NULL; o = o->next) |
| { |
| if ((o->flags & SEC_HAS_CONTENTS) != 0 |
| && o->contents != NULL) |
| { |
| BFD_ASSERT (o->output_section != NULL |
| && o->output_section->owner == abfd); |
| if (! bfd_set_section_contents (abfd, o->output_section, |
| o->contents, |
| (file_ptr) o->output_offset, |
| o->size)) |
| return FALSE; |
| } |
| } |
| |
| if (sdyn->size > 0) |
| { |
| struct external_sun4_dynamic esd; |
| struct external_sun4_dynamic_link esdl; |
| file_ptr pos; |
| |
| /* Finish up the dynamic link information. */ |
| PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version); |
| PUT_WORD (dynobj, |
| sdyn->output_section->vma + sdyn->output_offset + sizeof esd, |
| esd.ldd); |
| PUT_WORD (dynobj, |
| (sdyn->output_section->vma |
| + sdyn->output_offset |
| + sizeof esd |
| + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE), |
| esd.ld); |
| |
| if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd, |
| (file_ptr) sdyn->output_offset, |
| (bfd_size_type) sizeof esd)) |
| return FALSE; |
| |
| PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded); |
| |
| s = bfd_get_section_by_name (dynobj, ".need"); |
| if (s == NULL || s->size == 0) |
| PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need); |
| else |
| PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| esdl.ld_need); |
| |
| s = bfd_get_section_by_name (dynobj, ".rules"); |
| if (s == NULL || s->size == 0) |
| PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules); |
| else |
| PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| esdl.ld_rules); |
| |
| s = bfd_get_section_by_name (dynobj, ".got"); |
| BFD_ASSERT (s != NULL); |
| PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| esdl.ld_got); |
| |
| s = bfd_get_section_by_name (dynobj, ".plt"); |
| BFD_ASSERT (s != NULL); |
| PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| esdl.ld_plt); |
| PUT_WORD (dynobj, s->size, esdl.ld_plt_sz); |
| |
| s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| BFD_ASSERT (s != NULL); |
| BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| == s->size); |
| PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| esdl.ld_rel); |
| |
| s = bfd_get_section_by_name (dynobj, ".hash"); |
| BFD_ASSERT (s != NULL); |
| PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| esdl.ld_hash); |
| |
| s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| BFD_ASSERT (s != NULL); |
| PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| esdl.ld_stab); |
| |
| PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash); |
| |
| PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount, |
| esdl.ld_buckets); |
| |
| s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| BFD_ASSERT (s != NULL); |
| PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| esdl.ld_symbols); |
| PUT_WORD (dynobj, s->size, esdl.ld_symb_size); |
| |
| /* The size of the text area is the size of the .text section |
| rounded up to a page boundary. FIXME: Should the page size be |
| conditional on something? */ |
| PUT_WORD (dynobj, |
| BFD_ALIGN (obj_textsec (abfd)->size, 0x2000), |
| esdl.ld_text); |
| |
| pos = sdyn->output_offset; |
| pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE; |
| if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl, |
| pos, (bfd_size_type) sizeof esdl)) |
| return FALSE; |
| |
| abfd->flags |= DYNAMIC; |
| } |
| |
| return TRUE; |
| } |