| /* tc-ia64.h -- Header file for tc-ia64.c. |
| Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
| |
| This file is part of GAS, the GNU Assembler. |
| |
| GAS 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, or (at your option) |
| any later version. |
| |
| GAS 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 GAS; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "opcode/ia64.h" |
| #include "elf/ia64.h" |
| |
| #define TC_IA64 |
| |
| /* Linux is little endian by default. HPUX is big endian by default. */ |
| #ifdef TE_HPUX |
| #define md_number_to_chars number_to_chars_bigendian |
| #define TARGET_BYTES_BIG_ENDIAN 1 |
| #define MD_FLAGS_DEFAULT EF_IA_64_BE |
| #else |
| #define md_number_to_chars number_to_chars_littleendian |
| #define TARGET_BYTES_BIG_ENDIAN 0 |
| #define MD_FLAGS_DEFAULT EF_IA_64_ABI64 |
| #endif /* TE_HPUX */ |
| |
| /* We need to set the default object file format in ia64_init and not in |
| md_begin. This is because parse_args is called before md_begin, and we |
| do not want md_begin to wipe out the flag settings set by options parsed in |
| md_parse_args. */ |
| |
| #define HOST_SPECIAL_INIT ia64_init |
| extern void ia64_init PARAMS ((int, char **)); |
| |
| #define TARGET_FORMAT ia64_target_format() |
| extern const char *ia64_target_format PARAMS ((void)); |
| |
| #define TARGET_ARCH bfd_arch_ia64 |
| #define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */ |
| |
| #define NEED_LITERAL_POOL /* need gp literal pool */ |
| #define RELOC_REQUIRES_SYMBOL |
| #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
| #define NEED_INDEX_OPERATOR /* [ ] is index operator */ |
| |
| #define QUOTES_IN_INSN /* allow `string "foo;bar"' */ |
| #define LEX_AT LEX_NAME /* allow `@' inside name */ |
| #define LEX_QM LEX_NAME /* allow `?' inside name */ |
| #define LEX_HASH LEX_END_NAME /* allow `#' ending a name */ |
| |
| struct ia64_fix |
| { |
| int bigendian; /* byte order at fix location */ |
| enum ia64_opnd opnd; |
| }; |
| |
| extern void ia64_do_align PARAMS((int n)); |
| extern void ia64_end_of_source PARAMS((void)); |
| extern void ia64_start_line PARAMS((void)); |
| extern int ia64_unrecognized_line PARAMS((int ch)); |
| extern void ia64_frob_label PARAMS((struct symbol *sym)); |
| extern void ia64_flush_pending_output PARAMS((void)); |
| extern int ia64_parse_name (char *name, expressionS *e); |
| extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op, |
| expressionS *r)); |
| extern void ia64_cons_align PARAMS((int)); |
| extern void ia64_flush_insns PARAMS((void)); |
| extern int ia64_fix_adjustable PARAMS((struct fix *fix)); |
| extern int ia64_force_relocation PARAMS((struct fix *)); |
| extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes, |
| expressionS *exp)); |
| extern void ia64_validate_fix PARAMS ((struct fix *fix)); |
| extern char * ia64_canonicalize_symbol_name PARAMS ((char *)); |
| extern int ia64_elf_section_letter PARAMS ((int, char **)); |
| extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int)); |
| extern int ia64_elf_section_type PARAMS ((const char *, size_t len)); |
| extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec)); |
| extern void ia64_md_do_align PARAMS ((int, const char *, int, int)); |
| extern void ia64_handle_align PARAMS ((fragS *f)); |
| extern void ia64_after_parse_args PARAMS ((void)); |
| |
| #define md_end() ia64_end_of_source () |
| #define md_start_line_hook() ia64_start_line () |
| #define tc_unrecognized_line(ch) ia64_unrecognized_line (ch) |
| #define tc_frob_label(s) ia64_frob_label (s) |
| #define md_flush_pending_output() ia64_flush_pending_output () |
| #define md_parse_name(s,e,c) ia64_parse_name (s, e) |
| #define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s) |
| #define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r) |
| #define md_cons_align(n) ia64_cons_align (n) |
| #define TC_FORCE_RELOCATION(f) ia64_force_relocation (f) |
| #define tc_fix_adjustable(f) ia64_fix_adjustable (f) |
| #define md_convert_frag(b,s,f) as_fatal ("ia64_convert_frag") |
| #define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump") |
| #define md_create_short_jump(p,f,t,fr,s) \ |
| as_fatal ("ia64_create_short_jump") |
| #define md_estimate_size_before_relax(f,s) \ |
| (as_fatal ("ia64_estimate_size_before_relax"), 1) |
| #define md_elf_section_letter ia64_elf_section_letter |
| #define md_elf_section_flags ia64_elf_section_flags |
| #define TC_FIX_TYPE struct ia64_fix |
| #define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; } |
| #define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e) |
| #define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix) |
| #define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec) |
| #define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m) |
| #define HANDLE_ALIGN(f) ia64_handle_align (f) |
| #define md_elf_section_type(str,len) ia64_elf_section_type (str, len) |
| #define md_after_parse_args() ia64_after_parse_args () |
| |
| #define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16) |
| |
| #define WORKING_DOT_WORD /* don't do broken word processing for now */ |
| |
| #define ELF_TC_SPECIAL_SECTIONS \ |
| { ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \ |
| { ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| |
| #define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */ |
| |
| /* This is the information required for unwind records in an ia64 |
| object file. This is required by GAS and the compiler runtime. */ |
| |
| /* These are the starting point masks for the various types of |
| unwind records. To create a record of type R3 for instance, one |
| starts by using the value UNW_R3 and or-ing in any other required values. |
| These values are also unique (in context), so they can be used to identify |
| the various record types as well. UNW_Bx and some UNW_Px do have the |
| same value, but Px can only occur in a prologue context, and Bx in |
| a body context. */ |
| |
| #define UNW_R1 0x00 |
| #define UNW_R2 0x40 |
| #define UNW_R3 0x60 |
| #define UNW_P1 0x80 |
| #define UNW_P2 0xA0 |
| #define UNW_P3 0xB0 |
| #define UNW_P4 0xB8 |
| #define UNW_P5 0xB9 |
| #define UNW_P6 0xC0 |
| #define UNW_P7 0xE0 |
| #define UNW_P8 0xF0 |
| #define UNW_P9 0xF1 |
| #define UNW_P10 0xFF |
| #define UNW_X1 0xF9 |
| #define UNW_X2 0xFA |
| #define UNW_X3 0xFB |
| #define UNW_X4 0xFC |
| #define UNW_B1 0x80 |
| #define UNW_B2 0xC0 |
| #define UNW_B3 0xE0 |
| #define UNW_B4 0xF0 |
| |
| /* These are all the various types of unwind records. */ |
| |
| typedef enum |
| { |
| prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel, |
| rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel, |
| pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel, |
| fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask, |
| unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel, |
| lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel, |
| priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel, |
| priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when, |
| bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr, |
| rnat_psprel, rnat_sprel, epilogue, label_state, copy_state, |
| spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p, |
| spill_reg_p, unwabi |
| } unw_record_type; |
| |
| /* These structures declare the fields that can be used in each of the |
| 4 record formats, R, P, B and X. */ |
| |
| typedef struct unw_r_record |
| { |
| unsigned long rlen; |
| unsigned short grmask; |
| unsigned short grsave; |
| /* masks to represent the union of save.g, save.f, save.b, and |
| save.gf: */ |
| unsigned long imask_size; |
| struct |
| { |
| unsigned char *i; |
| unsigned long fr_mem; |
| unsigned char gr_mem; |
| unsigned char br_mem; |
| } mask; |
| } unw_r_record; |
| |
| typedef struct unw_p_record |
| { |
| void *imask; |
| unsigned long t; |
| unsigned long size; |
| unsigned long spoff; |
| unsigned long br; |
| unsigned long pspoff; |
| unsigned short gr; |
| unsigned short rmask; |
| unsigned short grmask; |
| unsigned long frmask; |
| unsigned short brmask; |
| unsigned char abi; |
| unsigned char context; |
| } unw_p_record; |
| |
| typedef struct unw_b_record |
| { |
| unsigned long t; |
| unsigned long label; |
| unsigned short ecount; |
| } unw_b_record; |
| |
| typedef struct unw_x_record |
| { |
| unsigned long t; |
| unsigned long spoff; |
| unsigned long pspoff; |
| unsigned short reg; |
| unsigned short treg; |
| unsigned short qp; |
| unsigned short ab; /* Value of the AB field.. */ |
| unsigned short xy; /* Value of the XY field.. */ |
| } unw_x_record; |
| |
| /* This structure is used to determine the specific record type and |
| its fields. */ |
| typedef struct unwind_record |
| { |
| unw_record_type type; |
| union { |
| unw_r_record r; |
| unw_p_record p; |
| unw_b_record b; |
| unw_x_record x; |
| } record; |
| } unwind_record; |
| |
| /* This expression evaluates to false if the relocation is for a local |
| object for which we still want to do the relocation at runtime. |
| True if we are willing to perform this relocation while building |
| the .o file. This is only used for pcrel relocations. */ |
| |
| /* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field |
| which has no external reloc, so we must resolve the value now. */ |
| |
| #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ |
| ((FIX)->fx_addsy == NULL \ |
| || (FIX)->fx_r_type == BFD_RELOC_UNUSED \ |
| || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ |
| && ! S_IS_WEAK ((FIX)->fx_addsy) \ |
| && S_IS_DEFINED ((FIX)->fx_addsy) \ |
| && ! S_IS_COMMON ((FIX)->fx_addsy))) |