1 /* tc-i386.h -- Header file for tc-i386.c 2 Copyright (C) 1989-2014 Free Software Foundation, Inc. 3 4 This file is part of GAS, the GNU Assembler. 5 6 GAS is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GAS is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GAS; see the file COPYING. If not, write to the Free 18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 19 02110-1301, USA. */ 20 21 #ifndef TC_I386 22 #define TC_I386 1 23 24 #include "opcodes/i386-opc.h" 25 26 struct fix; 27 28 #define TARGET_BYTES_BIG_ENDIAN 0 29 30 #define TARGET_ARCH (i386_arch ()) 31 #define TARGET_MACH (i386_mach ()) 32 extern enum bfd_architecture i386_arch (void); 33 extern unsigned long i386_mach (void); 34 35 #ifdef TE_FreeBSD 36 #define AOUT_TARGET_FORMAT "a.out-i386-freebsd" 37 #endif 38 #ifdef TE_NetBSD 39 #define AOUT_TARGET_FORMAT "a.out-i386-netbsd" 40 #endif 41 #ifdef TE_386BSD 42 #define AOUT_TARGET_FORMAT "a.out-i386-bsd" 43 #endif 44 #ifdef TE_LINUX 45 #define AOUT_TARGET_FORMAT "a.out-i386-linux" 46 #endif 47 #ifdef TE_Mach 48 #define AOUT_TARGET_FORMAT "a.out-mach3" 49 #endif 50 #ifdef TE_DYNIX 51 #define AOUT_TARGET_FORMAT "a.out-i386-dynix" 52 #endif 53 #ifndef AOUT_TARGET_FORMAT 54 #define AOUT_TARGET_FORMAT "a.out-i386" 55 #endif 56 57 #ifdef TE_FreeBSD 58 #define ELF_TARGET_FORMAT "elf32-i386-freebsd" 59 #define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd" 60 #elif defined (TE_VXWORKS) 61 #define ELF_TARGET_FORMAT "elf32-i386-vxworks" 62 #elif defined (TE_NACL) 63 #define ELF_TARGET_FORMAT "elf32-i386-nacl" 64 #define ELF_TARGET_FORMAT32 "elf32-x86-64-nacl" 65 #define ELF_TARGET_FORMAT64 "elf64-x86-64-nacl" 66 #endif 67 68 #ifdef TE_SOLARIS 69 #define ELF_TARGET_FORMAT "elf32-i386-sol2" 70 #define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2" 71 #endif 72 73 #ifndef ELF_TARGET_FORMAT 74 #define ELF_TARGET_FORMAT "elf32-i386" 75 #endif 76 77 #ifndef ELF_TARGET_FORMAT64 78 #define ELF_TARGET_FORMAT64 "elf64-x86-64" 79 #endif 80 81 #ifndef ELF_TARGET_FORMAT32 82 #define ELF_TARGET_FORMAT32 "elf32-x86-64" 83 #endif 84 85 #ifndef ELF_TARGET_L1OM_FORMAT 86 #define ELF_TARGET_L1OM_FORMAT "elf64-l1om" 87 #endif 88 89 #ifndef ELF_TARGET_K1OM_FORMAT 90 #define ELF_TARGET_K1OM_FORMAT "elf64-k1om" 91 #endif 92 93 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ 94 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \ 95 || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O)) 96 extern const char *i386_target_format (void); 97 #define TARGET_FORMAT i386_target_format () 98 #else 99 #ifdef TE_GO32 100 #define TARGET_FORMAT "coff-go32" 101 #endif 102 #ifdef OBJ_AOUT 103 #define TARGET_FORMAT AOUT_TARGET_FORMAT 104 #endif 105 #endif 106 107 #if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)) 108 #define md_end i386_elf_emit_arch_note 109 extern void i386_elf_emit_arch_note (void); 110 #endif 111 112 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 113 114 /* '$' may be used as immediate prefix. */ 115 #undef LOCAL_LABELS_DOLLAR 116 #define LOCAL_LABELS_DOLLAR 0 117 #undef LOCAL_LABELS_FB 118 #define LOCAL_LABELS_FB 1 119 120 extern const char extra_symbol_chars[]; 121 #define tc_symbol_chars extra_symbol_chars 122 123 extern const char *i386_comment_chars; 124 #define tc_comment_chars i386_comment_chars 125 126 /* The name of the global offset table generated by the compiler. Allow 127 this to be overridden if need be. */ 128 #ifndef GLOBAL_OFFSET_TABLE_NAME 129 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" 130 #endif 131 132 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT) 133 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) 134 #endif 135 extern bfd_reloc_code_real_type x86_cons (expressionS *, int); 136 137 #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \ 138 x86_cons_fix_new(FRAG, OFF, LEN, EXP, RELOC) 139 extern void x86_cons_fix_new 140 (fragS *, unsigned int, unsigned int, expressionS *, bfd_reloc_code_real_type); 141 142 #define TC_ADDRESS_BYTES x86_address_bytes 143 extern int x86_address_bytes (void); 144 145 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ 146 147 #define NO_RELOC BFD_RELOC_NONE 148 149 void i386_validate_fix (struct fix *); 150 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX) 151 152 #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) 153 extern int tc_i386_fix_adjustable (struct fix *); 154 155 /* Values passed to md_apply_fix don't include the symbol value. */ 156 #define MD_APPLY_SYM_VALUE(FIX) 0 157 158 /* ELF wants external syms kept, as does PE COFF. */ 159 #if defined (TE_PE) && defined (STRICT_PE_FORMAT) 160 #define EXTERN_FORCE_RELOC \ 161 (OUTPUT_FLAVOR == bfd_target_elf_flavour \ 162 || OUTPUT_FLAVOR == bfd_target_coff_flavour) 163 #else 164 #define EXTERN_FORCE_RELOC \ 165 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 166 #endif 167 168 /* This expression evaluates to true if the relocation is for a local 169 object for which we still want to do the relocation at runtime. 170 False if we are willing to perform this relocation while building 171 the .o file. GOTOFF and GOT32 do not need to be checked here because 172 they are not pcrel. .*/ 173 174 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 175 (!(FIX)->fx_pcrel \ 176 || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \ 177 || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \ 178 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL \ 179 || TC_FORCE_RELOCATION (FIX)) 180 181 extern int i386_parse_name (char *, expressionS *, char *); 182 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) 183 184 extern operatorT i386_operator (const char *name, unsigned int operands, char *); 185 #define md_operator i386_operator 186 187 extern int i386_need_index_operator (void); 188 #define md_need_index_operator i386_need_index_operator 189 190 #define md_register_arithmetic 0 191 192 extern const struct relax_type md_relax_table[]; 193 #define TC_GENERIC_RELAX_TABLE md_relax_table 194 195 extern int optimize_align_code; 196 197 #define md_do_align(n, fill, len, max, around) \ 198 if ((n) \ 199 && !need_pass_2 \ 200 && optimize_align_code \ 201 && (!(fill) \ 202 || ((char)*(fill) == (char)0x90 && (len) == 1)) \ 203 && subseg_text_p (now_seg)) \ 204 { \ 205 frag_align_code ((n), (max)); \ 206 goto around; \ 207 } 208 209 #define MAX_MEM_FOR_RS_ALIGN_CODE 31 210 211 extern void i386_align_code (fragS *, int); 212 213 #define HANDLE_ALIGN(fragP) \ 214 if (fragP->fr_type == rs_align_code) \ 215 i386_align_code (fragP, (fragP->fr_next->fr_address \ 216 - fragP->fr_address \ 217 - fragP->fr_fix)); 218 219 void i386_print_statistics (FILE *); 220 #define tc_print_statistics i386_print_statistics 221 222 extern unsigned int i386_frag_max_var (fragS *); 223 #define md_frag_max_var i386_frag_max_var 224 225 #define md_number_to_chars number_to_chars_littleendian 226 227 enum processor_type 228 { 229 PROCESSOR_UNKNOWN, 230 PROCESSOR_I386, 231 PROCESSOR_I486, 232 PROCESSOR_PENTIUM, 233 PROCESSOR_PENTIUMPRO, 234 PROCESSOR_PENTIUM4, 235 PROCESSOR_NOCONA, 236 PROCESSOR_CORE, 237 PROCESSOR_CORE2, 238 PROCESSOR_COREI7, 239 PROCESSOR_L1OM, 240 PROCESSOR_K1OM, 241 PROCESSOR_K6, 242 PROCESSOR_ATHLON, 243 PROCESSOR_K8, 244 PROCESSOR_GENERIC32, 245 PROCESSOR_GENERIC64, 246 PROCESSOR_AMDFAM10, 247 PROCESSOR_BD, 248 PROCESSOR_BT 249 }; 250 251 extern enum processor_type cpu_arch_tune; 252 extern enum processor_type cpu_arch_isa; 253 extern i386_cpu_flags cpu_arch_isa_flags; 254 255 struct i386_tc_frag_data 256 { 257 enum processor_type isa; 258 i386_cpu_flags isa_flags; 259 enum processor_type tune; 260 }; 261 262 /* We need to emit the right NOP pattern in .align frags. This is 263 done after the text-to-bits assembly pass, so we need to mark it with 264 the isa/tune settings at the time the .align was assembled. */ 265 #define TC_FRAG_TYPE struct i386_tc_frag_data 266 267 #define TC_FRAG_INIT(FRAGP) \ 268 do \ 269 { \ 270 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \ 271 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \ 272 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \ 273 } \ 274 while (0) 275 276 #ifdef SCO_ELF 277 #define tc_init_after_args() sco_id () 278 extern void sco_id (void); 279 #endif 280 281 #define WORKING_DOT_WORD 1 282 283 /* We want .cfi_* pseudo-ops for generating unwind info. */ 284 #define TARGET_USE_CFIPOP 1 285 286 extern unsigned int x86_dwarf2_return_column; 287 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column 288 289 extern int x86_cie_data_alignment; 290 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment 291 292 extern int x86_dwarf2_addr_size (void); 293 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size () 294 295 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum 296 extern void tc_x86_parse_to_dw2regnum (expressionS *); 297 298 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions 299 extern void tc_x86_frame_initial_instructions (void); 300 301 #define md_elf_section_type(str,len) i386_elf_section_type (str, len) 302 extern int i386_elf_section_type (const char *, size_t); 303 304 #ifdef TE_SOLARIS 305 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec) 306 extern void i386_solaris_fix_up_eh_frame (segT); 307 #endif 308 309 /* Support for SHF_X86_64_LARGE */ 310 extern bfd_vma x86_64_section_word (char *, size_t); 311 extern bfd_vma x86_64_section_letter (int, char **); 312 #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) 313 #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) 314 315 #ifdef TE_PE 316 317 #define O_secrel O_md1 318 319 #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset 320 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); 321 322 #endif /* TE_PE */ 323 324 /* X_add_symbol:X_op_symbol (Intel mode only) */ 325 #define O_full_ptr O_md2 326 327 #ifdef OBJ_MACH_O 328 329 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX)) 330 331 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \ 332 (obj_mach_o_force_reloc_sub_same (FIX, SEG)) 333 334 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \ 335 (obj_mach_o_force_reloc_sub_local (FIX, SEG)) 336 337 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 338 339 #endif /* OBJ_MACH_O */ 340 341 #endif /* TC_I386 */ 342