tc-ia64.h revision 130562
1/* tc-ia64.h -- Header file for tc-ia64.c. 2 Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. 3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com> 4 5 This file is part of GAS, the GNU Assembler. 6 7 GAS is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GAS is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GAS; see the file COPYING. If not, write to 19 the Free Software Foundation, 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22#include "opcode/ia64.h" 23#include "elf/ia64.h" 24 25#define TC_IA64 26 27/* Linux is little endian by default. HPUX is big endian by default. */ 28#ifdef TE_HPUX 29#define TARGET_BYTES_BIG_ENDIAN 1 30#define MD_FLAGS_DEFAULT EF_IA_64_BE 31#else 32#define TARGET_BYTES_BIG_ENDIAN 0 33#define MD_FLAGS_DEFAULT EF_IA_64_ABI64 34#endif /* TE_HPUX */ 35 36extern void (*ia64_number_to_chars) PARAMS ((char *, valueT, int)); 37#define md_number_to_chars (*ia64_number_to_chars) 38 39extern void ia64_elf_section_change_hook PARAMS ((void)); 40#define md_elf_section_change_hook ia64_elf_section_change_hook 41 42/* We record the endian for this section. 0 means default, 1 means 43 big endian and 2 means little endian. */ 44struct ia64_segment_info_type 45{ 46 unsigned int endian : 2; 47}; 48 49#define TC_SEGMENT_INFO_TYPE struct ia64_segment_info_type 50 51extern void ia64_adjust_symtab PARAMS ((void)); 52#define tc_adjust_symtab() ia64_adjust_symtab () 53 54extern void ia64_frob_file PARAMS ((void)); 55#define tc_frob_file() ia64_frob_file () 56 57/* We need to set the default object file format in ia64_init and not in 58 md_begin. This is because parse_args is called before md_begin, and we 59 do not want md_begin to wipe out the flag settings set by options parsed in 60 md_parse_args. */ 61 62#define HOST_SPECIAL_INIT ia64_init 63extern void ia64_init PARAMS ((int, char **)); 64 65#define TARGET_FORMAT ia64_target_format() 66extern const char *ia64_target_format PARAMS ((void)); 67 68#define TARGET_ARCH bfd_arch_ia64 69#define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */ 70 71#define NEED_LITERAL_POOL /* need gp literal pool */ 72#define RELOC_REQUIRES_SYMBOL 73#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ 74#define NEED_INDEX_OPERATOR /* [ ] is index operator */ 75 76#define QUOTES_IN_INSN /* allow `string "foo;bar"' */ 77#define LEX_AT LEX_NAME /* allow `@' inside name */ 78#define LEX_QM LEX_NAME /* allow `?' inside name */ 79#define LEX_HASH LEX_END_NAME /* allow `#' ending a name */ 80 81#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 82 83struct ia64_fix 84 { 85 int bigendian; /* byte order at fix location */ 86 enum ia64_opnd opnd; 87 }; 88 89extern void ia64_end_of_source PARAMS((void)); 90extern void ia64_start_line PARAMS((void)); 91extern int ia64_unrecognized_line PARAMS((int ch)); 92extern void ia64_frob_label PARAMS((struct symbol *sym)); 93#ifdef TE_HPUX 94extern int ia64_frob_symbol PARAMS((struct symbol *sym)); 95#endif 96extern void ia64_flush_pending_output PARAMS((void)); 97extern int ia64_parse_name (char *name, expressionS *e); 98extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op, 99 expressionS *r)); 100extern void ia64_cons_align PARAMS((int)); 101extern void ia64_flush_insns PARAMS((void)); 102extern int ia64_fix_adjustable PARAMS((struct fix *fix)); 103extern int ia64_force_relocation PARAMS((struct fix *)); 104extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes, 105 expressionS *exp)); 106extern void ia64_validate_fix PARAMS ((struct fix *fix)); 107extern char * ia64_canonicalize_symbol_name PARAMS ((char *)); 108extern int ia64_elf_section_letter PARAMS ((int, char **)); 109extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int)); 110extern int ia64_elf_section_type PARAMS ((const char *, size_t len)); 111extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec)); 112extern void ia64_md_do_align PARAMS ((int, const char *, int, int)); 113extern void ia64_handle_align PARAMS ((fragS *f)); 114extern void ia64_after_parse_args PARAMS ((void)); 115extern void ia64_dwarf2_emit_offset PARAMS ((symbolS *, unsigned int)); 116extern void ia64_check_label PARAMS ((symbolS *)); 117extern int ia64_estimate_size_before_relax (fragS *, asection *); 118extern void ia64_convert_frag (fragS *); 119 120#define md_end() ia64_end_of_source () 121#define md_start_line_hook() ia64_start_line () 122#define tc_unrecognized_line(ch) ia64_unrecognized_line (ch) 123#define tc_frob_label(s) ia64_frob_label (s) 124#ifdef TE_HPUX 125#define tc_frob_symbol(s,p) p |= ia64_frob_symbol (s) 126#endif /* TE_HPUX */ 127#define md_flush_pending_output() ia64_flush_pending_output () 128#define md_parse_name(s,e,c) ia64_parse_name (s, e) 129#define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s) 130#define tc_canonicalize_section_name(s) ia64_canonicalize_symbol_name (s) 131#define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r) 132#define md_cons_align(n) ia64_cons_align (n) 133#define TC_FORCE_RELOCATION(f) ia64_force_relocation (f) 134#define tc_fix_adjustable(f) ia64_fix_adjustable (f) 135#define MD_APPLY_SYM_VALUE(FIX) 0 136#define md_convert_frag(b,s,f) ia64_convert_frag (f) 137#define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump") 138#define md_create_short_jump(p,f,t,fr,s) \ 139 as_fatal ("ia64_create_short_jump") 140#define md_estimate_size_before_relax(f,s) \ 141 ia64_estimate_size_before_relax(f,s) 142#define md_elf_section_letter ia64_elf_section_letter 143#define md_elf_section_flags ia64_elf_section_flags 144#define TC_FIX_TYPE struct ia64_fix 145#define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; } 146#define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e) 147#define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix) 148#define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec) 149#define md_section_align(seg,size) (size) 150#define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m) 151#define HANDLE_ALIGN(f) ia64_handle_align (f) 152#define md_elf_section_type(str,len) ia64_elf_section_type (str, len) 153#define md_after_parse_args() ia64_after_parse_args () 154#define TC_DWARF2_EMIT_OFFSET ia64_dwarf2_emit_offset 155#define tc_check_label(l) ia64_check_label (l) 156 157/* Record if an alignment frag should end with a stop bit. */ 158#define TC_FRAG_TYPE int 159#define TC_FRAG_INIT(FRAGP) do {(FRAGP)->tc_frag_data = 0;}while (0) 160 161#define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16) 162 163#define WORKING_DOT_WORD /* don't do broken word processing for now */ 164 165#define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */ 166 167/* This is the information required for unwind records in an ia64 168 object file. This is required by GAS and the compiler runtime. */ 169 170/* These are the starting point masks for the various types of 171 unwind records. To create a record of type R3 for instance, one 172 starts by using the value UNW_R3 and or-ing in any other required values. 173 These values are also unique (in context), so they can be used to identify 174 the various record types as well. UNW_Bx and some UNW_Px do have the 175 same value, but Px can only occur in a prologue context, and Bx in 176 a body context. */ 177 178#define UNW_R1 0x00 179#define UNW_R2 0x40 180#define UNW_R3 0x60 181#define UNW_P1 0x80 182#define UNW_P2 0xA0 183#define UNW_P3 0xB0 184#define UNW_P4 0xB8 185#define UNW_P5 0xB9 186#define UNW_P6 0xC0 187#define UNW_P7 0xE0 188#define UNW_P8 0xF0 189#define UNW_P9 0xF1 190#define UNW_P10 0xFF 191#define UNW_X1 0xF9 192#define UNW_X2 0xFA 193#define UNW_X3 0xFB 194#define UNW_X4 0xFC 195#define UNW_B1 0x80 196#define UNW_B2 0xC0 197#define UNW_B3 0xE0 198#define UNW_B4 0xF0 199 200/* These are all the various types of unwind records. */ 201 202typedef enum 203{ 204 prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel, 205 rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel, 206 pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel, 207 fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask, 208 unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel, 209 lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel, 210 priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel, 211 priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when, 212 bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr, 213 rnat_psprel, rnat_sprel, epilogue, label_state, copy_state, 214 spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p, 215 spill_reg_p, unwabi, endp 216} unw_record_type; 217 218/* These structures declare the fields that can be used in each of the 219 4 record formats, R, P, B and X. */ 220 221typedef struct unw_r_record 222{ 223 unsigned long rlen; 224 unsigned short grmask; 225 unsigned short grsave; 226 /* masks to represent the union of save.g, save.f, save.b, and 227 save.gf: */ 228 unsigned long imask_size; 229 struct 230 { 231 unsigned char *i; 232 unsigned long fr_mem; 233 unsigned char gr_mem; 234 unsigned char br_mem; 235 } mask; 236} unw_r_record; 237 238typedef struct unw_p_record 239{ 240 void *imask; 241 unsigned long t; 242 unsigned long size; 243 unsigned long spoff; 244 unsigned long br; 245 unsigned long pspoff; 246 unsigned short gr; 247 unsigned short rmask; 248 unsigned short grmask; 249 unsigned long frmask; 250 unsigned short brmask; 251 unsigned char abi; 252 unsigned char context; 253} unw_p_record; 254 255typedef struct unw_b_record 256{ 257 unsigned long t; 258 unsigned long label; 259 unsigned short ecount; 260} unw_b_record; 261 262typedef struct unw_x_record 263{ 264 unsigned long t; 265 unsigned long spoff; 266 unsigned long pspoff; 267 unsigned short reg; 268 unsigned short treg; 269 unsigned short qp; 270 unsigned short ab; /* Value of the AB field.. */ 271 unsigned short xy; /* Value of the XY field.. */ 272} unw_x_record; 273 274/* This structure is used to determine the specific record type and 275 its fields. */ 276typedef struct unwind_record 277{ 278 unw_record_type type; 279 union { 280 unw_r_record r; 281 unw_p_record p; 282 unw_b_record b; 283 unw_x_record x; 284 } record; 285} unwind_record; 286 287/* This expression evaluates to true if the relocation is for a local 288 object for which we still want to do the relocation at runtime. 289 False if we are willing to perform this relocation while building 290 the .o file. */ 291 292/* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field 293 which has no external reloc, so we must resolve the value now. */ 294 295#define TC_FORCE_RELOCATION_LOCAL(FIX) \ 296 ((FIX)->fx_r_type != BFD_RELOC_UNUSED \ 297 && (!(FIX)->fx_pcrel \ 298 || (FIX)->fx_plt \ 299 || TC_FORCE_RELOCATION (FIX))) 300