1 /* tc-i386.h -- Header file for tc-i386.c 2 Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 4 Free Software Foundation, Inc. 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23 #ifndef TC_I386 24 #define TC_I386 1 25 26 #include "opcodes/i386-opc.h" 27 28 struct fix; 29 30 #define TARGET_BYTES_BIG_ENDIAN 0 31 32 #define TARGET_ARCH (i386_arch ()) 33 #define TARGET_MACH (i386_mach ()) 34 extern enum bfd_architecture i386_arch (void); 35 extern unsigned long i386_mach (void); 36 37 #ifdef TE_FreeBSD 38 #define AOUT_TARGET_FORMAT "a.out-i386-freebsd" 39 #endif 40 #ifdef TE_NetBSD 41 #define AOUT_TARGET_FORMAT "a.out-i386-netbsd" 42 #endif 43 #ifdef TE_386BSD 44 #define AOUT_TARGET_FORMAT "a.out-i386-bsd" 45 #endif 46 #ifdef TE_LINUX 47 #define AOUT_TARGET_FORMAT "a.out-i386-linux" 48 #endif 49 #ifdef TE_Mach 50 #define AOUT_TARGET_FORMAT "a.out-mach3" 51 #endif 52 #ifdef TE_DYNIX 53 #define AOUT_TARGET_FORMAT "a.out-i386-dynix" 54 #endif 55 #ifndef AOUT_TARGET_FORMAT 56 #define AOUT_TARGET_FORMAT "a.out-i386" 57 #endif 58 59 #ifdef TE_FreeBSD 60 #define ELF_TARGET_FORMAT "elf32-i386-freebsd" 61 #define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd" 62 #elif defined (TE_VXWORKS) 63 #define ELF_TARGET_FORMAT "elf32-i386-vxworks" 64 #elif defined (TE_NACL) 65 #define ELF_TARGET_FORMAT "elf32-i386-nacl" 66 #define ELF_TARGET_FORMAT32 "elf32-x86-64-nacl" 67 #define ELF_TARGET_FORMAT64 "elf64-x86-64-nacl" 68 #endif 69 70 #ifdef TE_SOLARIS 71 #define ELF_TARGET_FORMAT "elf32-i386-sol2" 72 #define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2" 73 #endif 74 75 #ifndef ELF_TARGET_FORMAT 76 #define ELF_TARGET_FORMAT "elf32-i386" 77 #endif 78 79 #ifndef ELF_TARGET_FORMAT64 80 #define ELF_TARGET_FORMAT64 "elf64-x86-64" 81 #endif 82 83 #ifndef ELF_TARGET_FORMAT32 84 #define ELF_TARGET_FORMAT32 "elf32-x86-64" 85 #endif 86 87 #ifndef ELF_TARGET_L1OM_FORMAT 88 #define ELF_TARGET_L1OM_FORMAT "elf64-l1om" 89 #endif 90 91 #ifndef ELF_TARGET_K1OM_FORMAT 92 #define ELF_TARGET_K1OM_FORMAT "elf64-k1om" 93 #endif 94 95 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ 96 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \ 97 || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O)) 98 extern const char *i386_target_format (void); 99 #define TARGET_FORMAT i386_target_format () 100 #else 101 #ifdef TE_GO32 102 #define TARGET_FORMAT "coff-go32" 103 #endif 104 #ifdef OBJ_AOUT 105 #define TARGET_FORMAT AOUT_TARGET_FORMAT 106 #endif 107 #endif 108 109 #if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)) 110 #define md_end i386_elf_emit_arch_note 111 extern void i386_elf_emit_arch_note (void); 112 #endif 113 114 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 115 116 /* '$' may be used as immediate prefix. */ 117 #undef LOCAL_LABELS_DOLLAR 118 #define LOCAL_LABELS_DOLLAR 0 119 #undef LOCAL_LABELS_FB 120 #define LOCAL_LABELS_FB 1 121 122 extern const char extra_symbol_chars[]; 123 #define tc_symbol_chars extra_symbol_chars 124 125 extern const char *i386_comment_chars; 126 #define tc_comment_chars i386_comment_chars 127 128 /* The name of the global offset table generated by the compiler. Allow 129 this to be overridden if need be. */ 130 #ifndef GLOBAL_OFFSET_TABLE_NAME 131 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" 132 #endif 133 134 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT) 135 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) 136 #endif 137 extern void x86_cons (expressionS *, int); 138 139 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP) 140 extern void x86_cons_fix_new 141 (fragS *, unsigned int, unsigned int, expressionS *); 142 143 #define TC_ADDRESS_BYTES x86_address_bytes 144 extern int x86_address_bytes (void); 145 146 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ 147 148 #define NO_RELOC BFD_RELOC_NONE 149 150 void i386_validate_fix (struct fix *); 151 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX) 152 153 #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) 154 extern int tc_i386_fix_adjustable (struct fix *); 155 156 /* Values passed to md_apply_fix don't include the symbol value. */ 157 #define MD_APPLY_SYM_VALUE(FIX) 0 158 159 /* ELF wants external syms kept, as does PE COFF. */ 160 #if defined (TE_PE) && defined (STRICT_PE_FORMAT) 161 #define EXTERN_FORCE_RELOC \ 162 (OUTPUT_FLAVOR == bfd_target_elf_flavour \ 163 || OUTPUT_FLAVOR == bfd_target_coff_flavour) 164 #else 165 #define EXTERN_FORCE_RELOC \ 166 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 167 #endif 168 169 /* This expression evaluates to true if the relocation is for a local 170 object for which we still want to do the relocation at runtime. 171 False if we are willing to perform this relocation while building 172 the .o file. GOTOFF and GOT32 do not need to be checked here because 173 they are not pcrel. .*/ 174 175 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 176 (!(FIX)->fx_pcrel \ 177 || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \ 178 || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \ 179 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL \ 180 || TC_FORCE_RELOCATION (FIX)) 181 182 extern int i386_parse_name (char *, expressionS *, char *); 183 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) 184 185 extern operatorT i386_operator (const char *name, unsigned int operands, char *); 186 #define md_operator i386_operator 187 188 extern int i386_need_index_operator (void); 189 #define md_need_index_operator i386_need_index_operator 190 191 #define md_register_arithmetic 0 192 193 extern const struct relax_type md_relax_table[]; 194 #define TC_GENERIC_RELAX_TABLE md_relax_table 195 196 extern int optimize_align_code; 197 198 #define md_do_align(n, fill, len, max, around) \ 199 if ((n) \ 200 && !need_pass_2 \ 201 && optimize_align_code \ 202 && (!(fill) \ 203 || ((char)*(fill) == (char)0x90 && (len) == 1)) \ 204 && subseg_text_p (now_seg)) \ 205 { \ 206 frag_align_code ((n), (max)); \ 207 goto around; \ 208 } 209 210 #define MAX_MEM_FOR_RS_ALIGN_CODE 31 211 212 extern void i386_align_code (fragS *, int); 213 214 #define HANDLE_ALIGN(fragP) \ 215 if (fragP->fr_type == rs_align_code) \ 216 i386_align_code (fragP, (fragP->fr_next->fr_address \ 217 - fragP->fr_address \ 218 - fragP->fr_fix)); 219 220 void i386_print_statistics (FILE *); 221 #define tc_print_statistics i386_print_statistics 222 223 extern unsigned int i386_frag_max_var (fragS *); 224 #define md_frag_max_var i386_frag_max_var 225 226 #define md_number_to_chars number_to_chars_littleendian 227 228 enum processor_type 229 { 230 PROCESSOR_UNKNOWN, 231 PROCESSOR_I386, 232 PROCESSOR_I486, 233 PROCESSOR_PENTIUM, 234 PROCESSOR_PENTIUMPRO, 235 PROCESSOR_PENTIUM4, 236 PROCESSOR_NOCONA, 237 PROCESSOR_CORE, 238 PROCESSOR_CORE2, 239 PROCESSOR_COREI7, 240 PROCESSOR_L1OM, 241 PROCESSOR_K1OM, 242 PROCESSOR_K6, 243 PROCESSOR_ATHLON, 244 PROCESSOR_K8, 245 PROCESSOR_GENERIC32, 246 PROCESSOR_GENERIC64, 247 PROCESSOR_AMDFAM10, 248 PROCESSOR_BD, 249 PROCESSOR_BT 250 }; 251 252 extern enum processor_type cpu_arch_tune; 253 extern enum processor_type cpu_arch_isa; 254 extern i386_cpu_flags cpu_arch_isa_flags; 255 256 struct i386_tc_frag_data 257 { 258 enum processor_type isa; 259 i386_cpu_flags isa_flags; 260 enum processor_type tune; 261 }; 262 263 /* We need to emit the right NOP pattern in .align frags. This is 264 done after the text-to-bits assembly pass, so we need to mark it with 265 the isa/tune settings at the time the .align was assembled. */ 266 #define TC_FRAG_TYPE struct i386_tc_frag_data 267 268 #define TC_FRAG_INIT(FRAGP) \ 269 do \ 270 { \ 271 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \ 272 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \ 273 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \ 274 } \ 275 while (0) 276 277 #ifdef SCO_ELF 278 #define tc_init_after_args() sco_id () 279 extern void sco_id (void); 280 #endif 281 282 #define WORKING_DOT_WORD 1 283 284 /* We want .cfi_* pseudo-ops for generating unwind info. */ 285 #define TARGET_USE_CFIPOP 1 286 287 extern unsigned int x86_dwarf2_return_column; 288 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column 289 290 extern int x86_cie_data_alignment; 291 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment 292 293 extern int x86_dwarf2_addr_size (void); 294 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size () 295 296 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum 297 extern void tc_x86_parse_to_dw2regnum (expressionS *); 298 299 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions 300 extern void tc_x86_frame_initial_instructions (void); 301 302 #define md_elf_section_type(str,len) i386_elf_section_type (str, len) 303 extern int i386_elf_section_type (const char *, size_t); 304 305 #ifdef TE_SOLARIS 306 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec) 307 extern void i386_solaris_fix_up_eh_frame (segT); 308 #endif 309 310 /* Support for SHF_X86_64_LARGE */ 311 extern bfd_vma x86_64_section_word (char *, size_t); 312 extern bfd_vma x86_64_section_letter (int, char **); 313 #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) 314 #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) 315 316 #ifdef TE_PE 317 318 #define O_secrel O_md1 319 320 #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset 321 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); 322 323 #endif /* TE_PE */ 324 325 /* X_add_symbol:X_op_symbol (Intel mode only) */ 326 #define O_full_ptr O_md2 327 328 #ifdef OBJ_MACH_O 329 330 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX)) 331 332 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \ 333 (obj_mach_o_force_reloc_sub_same (FIX, SEG)) 334 335 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \ 336 (obj_mach_o_force_reloc_sub_local (FIX, SEG)) 337 338 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 339 340 #endif /* OBJ_MACH_O */ 341 342 #endif /* TC_I386 */ 343