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  1. /* tc-i386.h -- Header file for tc-i386.c
  2.    Copyright (C) 1989-2015 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. #ifndef ELF_TARGET_IAMCU_FORMAT
  94. #define ELF_TARGET_IAMCU_FORMAT "elf32-iamcu"
  95. #endif
  96.  
  97. #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
  98.      || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \
  99.      || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O))
  100. extern const char *i386_target_format (void);
  101. #define TARGET_FORMAT i386_target_format ()
  102. #else
  103. #ifdef TE_GO32
  104. #define TARGET_FORMAT           "coff-go32"
  105. #endif
  106. #ifdef OBJ_AOUT
  107. #define TARGET_FORMAT           AOUT_TARGET_FORMAT
  108. #endif
  109. #endif
  110.  
  111. #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
  112.  
  113. /* '$' may be used as immediate prefix.  */
  114. #undef LOCAL_LABELS_DOLLAR
  115. #define LOCAL_LABELS_DOLLAR 0
  116. #undef LOCAL_LABELS_FB
  117. #define LOCAL_LABELS_FB 1
  118.  
  119. extern const char extra_symbol_chars[];
  120. #define tc_symbol_chars extra_symbol_chars
  121.  
  122. extern const char *i386_comment_chars;
  123. #define tc_comment_chars i386_comment_chars
  124.  
  125. /* The name of the global offset table generated by the compiler. Allow
  126.    this to be overridden if need be.  */
  127. #ifndef GLOBAL_OFFSET_TABLE_NAME
  128. #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
  129. #endif
  130.  
  131. #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
  132. #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
  133. #endif
  134. extern bfd_reloc_code_real_type x86_cons (expressionS *, int);
  135.  
  136. #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC)     \
  137.   x86_cons_fix_new(FRAG, OFF, LEN, EXP, RELOC)
  138. extern void x86_cons_fix_new
  139. (fragS *, unsigned int, unsigned int, expressionS *, bfd_reloc_code_real_type);
  140.  
  141. #define TC_ADDRESS_BYTES x86_address_bytes
  142. extern int x86_address_bytes (void);
  143.  
  144. #define DIFF_EXPR_OK    /* foo-. gets turned into PC relative relocs */
  145.  
  146. #define NO_RELOC BFD_RELOC_NONE
  147.  
  148. void i386_validate_fix (struct fix *);
  149. #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
  150.  
  151. #define tc_fix_adjustable(X)  tc_i386_fix_adjustable(X)
  152. extern int tc_i386_fix_adjustable (struct fix *);
  153.  
  154. /* Values passed to md_apply_fix don't include the symbol value.  */
  155. #define MD_APPLY_SYM_VALUE(FIX) 0
  156.  
  157. /* ELF wants external syms kept, as does PE COFF.  */
  158. #if defined (TE_PE) && defined (STRICT_PE_FORMAT)
  159. #define EXTERN_FORCE_RELOC                              \
  160.   (OUTPUT_FLAVOR == bfd_target_elf_flavour              \
  161.    || OUTPUT_FLAVOR == bfd_target_coff_flavour)
  162. #else
  163. #define EXTERN_FORCE_RELOC                              \
  164.   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
  165. #endif
  166.  
  167. /* This expression evaluates to true if the relocation is for a local
  168.    object for which we still want to do the relocation at runtime.
  169.    False if we are willing to perform this relocation while building
  170.    the .o file.  GOTOFF and GOT32 do not need to be checked here because
  171.    they are not pcrel.  .*/
  172.  
  173. #define TC_FORCE_RELOCATION_LOCAL(FIX)                          \
  174.   (!(FIX)->fx_pcrel                                             \
  175.    || (FIX)->fx_r_type == BFD_RELOC_386_PLT32                   \
  176.    || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC                   \
  177.    || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX            \
  178.    || (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX        \
  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_IAMCU,
  242.   PROCESSOR_K6,
  243.   PROCESSOR_ATHLON,
  244.   PROCESSOR_K8,
  245.   PROCESSOR_GENERIC32,
  246.   PROCESSOR_GENERIC64,
  247.   PROCESSOR_AMDFAM10,
  248.   PROCESSOR_BD,
  249.   PROCESSOR_ZNVER,
  250.   PROCESSOR_BT
  251. };
  252.  
  253. extern enum processor_type cpu_arch_tune;
  254. extern enum processor_type cpu_arch_isa;
  255. extern i386_cpu_flags cpu_arch_isa_flags;
  256.  
  257. struct i386_tc_frag_data
  258. {
  259.   enum processor_type isa;
  260.   i386_cpu_flags isa_flags;
  261.   enum processor_type tune;
  262. };
  263.  
  264. /* We need to emit the right NOP pattern in .align frags.  This is
  265.    done after the text-to-bits assembly pass, so we need to mark it with
  266.    the isa/tune settings at the time the .align was assembled.  */
  267. #define TC_FRAG_TYPE struct i386_tc_frag_data
  268.  
  269. #define TC_FRAG_INIT(FRAGP)                                     \
  270.  do                                                             \
  271.    {                                                            \
  272.      (FRAGP)->tc_frag_data.isa = cpu_arch_isa;                  \
  273.      (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags;      \
  274.      (FRAGP)->tc_frag_data.tune = cpu_arch_tune;                \
  275.    }                                                            \
  276.  while (0)
  277.  
  278. #ifdef SCO_ELF
  279. #define tc_init_after_args() sco_id ()
  280. extern void sco_id (void);
  281. #endif
  282.  
  283. #define WORKING_DOT_WORD 1
  284.  
  285. /* We want .cfi_* pseudo-ops for generating unwind info.  */
  286. #define TARGET_USE_CFIPOP 1
  287.  
  288. extern unsigned int x86_dwarf2_return_column;
  289. #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
  290.  
  291. extern int x86_cie_data_alignment;
  292. #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
  293.  
  294. extern int x86_dwarf2_addr_size (void);
  295. #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size ()
  296.  
  297. #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
  298. extern void tc_x86_parse_to_dw2regnum (expressionS *);
  299.  
  300. #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
  301. extern void tc_x86_frame_initial_instructions (void);
  302.  
  303. #define md_elf_section_type(str,len) i386_elf_section_type (str, len)
  304. extern int i386_elf_section_type (const char *, size_t);
  305.  
  306. #ifdef TE_SOLARIS
  307. #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
  308. extern void i386_solaris_fix_up_eh_frame (segT);
  309. #endif
  310.  
  311. /* Support for SHF_X86_64_LARGE */
  312. extern bfd_vma x86_64_section_word (char *, size_t);
  313. extern bfd_vma x86_64_section_letter (int, char **);
  314. #define md_elf_section_letter(LETTER, PTR_MSG)  x86_64_section_letter (LETTER, PTR_MSG)
  315. #define md_elf_section_word(STR, LEN)           x86_64_section_word (STR, LEN)
  316.  
  317. #ifdef TE_PE
  318.  
  319. #define O_secrel O_md1
  320.  
  321. #define TC_DWARF2_EMIT_OFFSET  tc_pe_dwarf2_emit_offset
  322. void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
  323.  
  324. #endif /* TE_PE */
  325.  
  326. /* X_add_symbol:X_op_symbol (Intel mode only) */
  327. #define O_full_ptr O_md2
  328.  
  329. #ifdef OBJ_MACH_O
  330.  
  331. #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX))
  332.  
  333. #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \
  334.           (obj_mach_o_force_reloc_sub_same (FIX, SEG))
  335.  
  336. #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \
  337.         (obj_mach_o_force_reloc_sub_local (FIX, SEG))
  338.  
  339. #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
  340.  
  341. #endif /* OBJ_MACH_O */
  342.  
  343. #endif /* TC_I386 */
  344.