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  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.