gas/config/tc-i386.h

   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 #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 void x86_cons (expressionS *, int);
 136
 137 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP)
 138 extern void x86_cons_fix_new
 139   (fragS *, unsigned int, unsigned int, expressionS *);
 140
 141 #define DIFF_EXPR_OK    /* foo-. gets turned into PC relative relocs */
 142
 143 #define NO_RELOC BFD_RELOC_NONE
 144
 145 void i386_validate_fix (struct fix *);
 146 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
 147
 148 #define tc_fix_adjustable(X)  tc_i386_fix_adjustable(X)
 149 extern int tc_i386_fix_adjustable (struct fix *);
 150
 151 /* Values passed to md_apply_fix don't include the symbol value.  */
 152 #define MD_APPLY_SYM_VALUE(FIX) 0
 153
 154 /* ELF wants external syms kept, as does PE COFF.  */
 155 #if defined (TE_PE) && defined (STRICT_PE_FORMAT)
 156 #define EXTERN_FORCE_RELOC                              \
 157   (OUTPUT_FLAVOR == bfd_target_elf_flavour              \
 158    || OUTPUT_FLAVOR == bfd_target_coff_flavour)
 159 #else
 160 #define EXTERN_FORCE_RELOC                              \
 161   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
 162 #endif
 163
 164 /* This expression evaluates to true if the relocation is for a local
 165    object for which we still want to do the relocation at runtime.
 166    False if we are willing to perform this relocation while building
 167    the .o file.  GOTOFF and GOT32 do not need to be checked here because
 168    they are not pcrel.  .*/
 169
 170 #define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
 171   (!(FIX)->fx_pcrel                                     \
 172    || (FIX)->fx_r_type == BFD_RELOC_386_PLT32           \
 173    || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC           \
 174    || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL     \
 175    || TC_FORCE_RELOCATION (FIX))
 176
 177 extern int i386_parse_name (char *, expressionS *, char *);
 178 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
 179
 180 extern operatorT i386_operator (const char *name, unsigned int operands, char *);
 181 #define md_operator i386_operator
 182
 183 extern int i386_need_index_operator (void);
 184 #define md_need_index_operator i386_need_index_operator
 185
 186 #define md_register_arithmetic 0
 187
 188 extern const struct relax_type md_relax_table[];
 189 #define TC_GENERIC_RELAX_TABLE md_relax_table
 190
 191 extern int optimize_align_code;
 192
 193 #define md_do_align(n, fill, len, max, around)                          \
 194 if ((n)                                                                 \
 195     && !need_pass_2                                                     \
 196     && optimize_align_code                                              \
 197     && (!(fill)                                                         \
 198         || ((char)*(fill) == (char)0x90 && (len) == 1))                 \
 199     && subseg_text_p (now_seg))                                         \
 200   {                                                                     \
 201     frag_align_code ((n), (max));                                       \
 202     goto around;                                                        \
 203   }
 204
 205 #define MAX_MEM_FOR_RS_ALIGN_CODE  31
 206
 207 extern void i386_align_code (fragS *, int);
 208
 209 #define HANDLE_ALIGN(fragP)                                             \
 210 if (fragP->fr_type == rs_align_code)                                    \
 211   i386_align_code (fragP, (fragP->fr_next->fr_address                   \
 212                            - fragP->fr_address                          \
 213                            - fragP->fr_fix));
 214
 215 void i386_print_statistics (FILE *);
 216 #define tc_print_statistics i386_print_statistics
 217
 218 #define md_number_to_chars number_to_chars_littleendian
 219
 220 enum processor_type
 221 {
 222   PROCESSOR_UNKNOWN,
 223   PROCESSOR_I386,
 224   PROCESSOR_I486,
 225   PROCESSOR_PENTIUM,
 226   PROCESSOR_PENTIUMPRO,
 227   PROCESSOR_PENTIUM4,
 228   PROCESSOR_NOCONA,
 229   PROCESSOR_CORE,
 230   PROCESSOR_CORE2,
 231   PROCESSOR_COREI7,
 232   PROCESSOR_L1OM,
 233   PROCESSOR_K1OM,
 234   PROCESSOR_K6,
 235   PROCESSOR_ATHLON,
 236   PROCESSOR_K8,
 237   PROCESSOR_GENERIC32,
 238   PROCESSOR_GENERIC64,
 239   PROCESSOR_AMDFAM10,
 240   PROCESSOR_BD
 241 };
 242
 243 extern enum processor_type cpu_arch_tune;
 244 extern enum processor_type cpu_arch_isa;
 245 extern i386_cpu_flags cpu_arch_isa_flags;
 246
 247 struct i386_tc_frag_data
 248 {
 249   enum processor_type isa;
 250   i386_cpu_flags isa_flags;
 251   enum processor_type tune;
 252 };
 253
 254 /* We need to emit the right NOP pattern in .align frags.  This is
 255    done after the text-to-bits assembly pass, so we need to mark it with
 256    the isa/tune settings at the time the .align was assembled.  */
 257 #define TC_FRAG_TYPE struct i386_tc_frag_data
 258
 259 #define TC_FRAG_INIT(FRAGP)                                     \
 260  do                                                             \
 261    {                                                            \
 262      (FRAGP)->tc_frag_data.isa = cpu_arch_isa;                  \
 263      (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags;      \
 264      (FRAGP)->tc_frag_data.tune = cpu_arch_tune;                \
 265    }                                                            \
 266  while (0)
 267
 268 #ifdef SCO_ELF
 269 #define tc_init_after_args() sco_id ()
 270 extern void sco_id (void);
 271 #endif
 272
 273 #define WORKING_DOT_WORD 1
 274
 275 /* We want .cfi_* pseudo-ops for generating unwind info.  */
 276 #define TARGET_USE_CFIPOP 1
 277
 278 extern unsigned int x86_dwarf2_return_column;
 279 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
 280
 281 extern int x86_cie_data_alignment;
 282 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
 283
 284 extern int x86_dwarf2_addr_size (void);
 285 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size ()
 286
 287 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
 288 extern void tc_x86_parse_to_dw2regnum (expressionS *);
 289
 290 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
 291 extern void tc_x86_frame_initial_instructions (void);
 292
 293 #define md_elf_section_type(str,len) i386_elf_section_type (str, len)
 294 extern int i386_elf_section_type (const char *, size_t);
 295
 296 #ifdef TE_SOLARIS
 297 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
 298 extern void i386_solaris_fix_up_eh_frame (segT);
 299 #endif
 300
 301 /* Support for SHF_X86_64_LARGE */
 302 extern bfd_vma x86_64_section_word (char *, size_t);
 303 extern bfd_vma x86_64_section_letter (int, char **);
 304 #define md_elf_section_letter(LETTER, PTR_MSG)  x86_64_section_letter (LETTER, PTR_MSG)
 305 #define md_elf_section_word(STR, LEN)           x86_64_section_word (STR, LEN)
 306
 307 #ifdef TE_PE
 308
 309 #define O_secrel O_md1
 310
 311 #define TC_DWARF2_EMIT_OFFSET  tc_pe_dwarf2_emit_offset
 312 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
 313
 314 #endif /* TE_PE */
 315
 316 /* X_add_symbol:X_op_symbol (Intel mode only) */
 317 #define O_full_ptr O_md2
 318
 319 #ifdef OBJ_MACH_O
 320
 321 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX))
 322
 323 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \
 324           (obj_mach_o_force_reloc_sub_same (FIX, SEG))
 325
 326 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \
 327         (obj_mach_o_force_reloc_sub_local (FIX, SEG))
 328
 329 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
 330
 331 #endif /* OBJ_MACH_O */
 332
 333 #endif /* TC_I386 */