/* tc-ia64.h -- Header file for tc-ia64.c. Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. Contributed by David Mosberger-Tang 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)); extern void ia64_dwarf2_emit_offset PARAMS ((symbolS *, unsigned int)); #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_APPLY_SYM_VALUE(FIX) 0 #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 TC_DWARF2_EMIT_OFFSET ia64_dwarf2_emit_offset #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 true if the relocation is for a local object for which we still want to do the relocation at runtime. False if we are willing to perform this relocation while building the .o file. */ /* 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_FORCE_RELOCATION_LOCAL(FIX) \ ((FIX)->fx_r_type != BFD_RELOC_UNUSED \ && (!(FIX)->fx_pcrel \ || (FIX)->fx_plt \ || TC_FORCE_RELOCATION (FIX)))