1 /* tc-i386.h -- Header file for tc-i386.c
2 Copyright (C) 1989-2020 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
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)
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.
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
24 #include "opcodes/i386-opc.h"
28 #define TARGET_BYTES_BIG_ENDIAN 0
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);
36 #define AOUT_TARGET_FORMAT "a.out-i386-freebsd"
39 #define AOUT_TARGET_FORMAT "a.out-i386-netbsd"
42 #define AOUT_TARGET_FORMAT "a.out-i386-bsd"
45 #define AOUT_TARGET_FORMAT "a.out-i386-linux"
48 #define AOUT_TARGET_FORMAT "a.out-mach3"
51 #define AOUT_TARGET_FORMAT "a.out-i386-dynix"
53 #ifndef AOUT_TARGET_FORMAT
54 #define AOUT_TARGET_FORMAT "a.out-i386"
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 #elif defined TE_CLOUDABI
67 #define ELF_TARGET_FORMAT64 "elf64-x86-64-cloudabi"
71 #define ELF_TARGET_FORMAT "elf32-i386-sol2"
72 #define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2"
75 #ifndef ELF_TARGET_FORMAT
76 #define ELF_TARGET_FORMAT "elf32-i386"
79 #ifndef ELF_TARGET_FORMAT64
80 #define ELF_TARGET_FORMAT64 "elf64-x86-64"
83 #ifndef ELF_TARGET_FORMAT32
84 #define ELF_TARGET_FORMAT32 "elf32-x86-64"
87 #ifndef ELF_TARGET_L1OM_FORMAT
88 #define ELF_TARGET_L1OM_FORMAT "elf64-l1om"
91 #ifndef ELF_TARGET_K1OM_FORMAT
92 #define ELF_TARGET_K1OM_FORMAT "elf64-k1om"
95 #ifndef ELF_TARGET_IAMCU_FORMAT
96 #define ELF_TARGET_IAMCU_FORMAT "elf32-iamcu"
99 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
100 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \
101 || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O))
102 extern const char *i386_target_format (void);
103 #define TARGET_FORMAT i386_target_format ()
106 #define TARGET_FORMAT "coff-go32"
109 #define TARGET_FORMAT AOUT_TARGET_FORMAT
113 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
115 /* '$' may be used as immediate prefix. */
116 #undef LOCAL_LABELS_DOLLAR
117 #define LOCAL_LABELS_DOLLAR 0
118 #undef LOCAL_LABELS_FB
119 #define LOCAL_LABELS_FB 1
121 extern const char extra_symbol_chars
[];
122 #define tc_symbol_chars extra_symbol_chars
124 extern const char *i386_comment_chars
;
125 #define tc_comment_chars i386_comment_chars
127 /* The name of the global offset table generated by the compiler. Allow
128 this to be overridden if need be. */
129 #ifndef GLOBAL_OFFSET_TABLE_NAME
130 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
133 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
134 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
136 extern bfd_reloc_code_real_type
x86_cons (expressionS
*, int);
138 #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \
139 x86_cons_fix_new(FRAG, OFF, LEN, EXP, RELOC)
140 extern void x86_cons_fix_new
141 (fragS
*, unsigned int, unsigned int, expressionS
*, bfd_reloc_code_real_type
);
143 #define TC_ADDRESS_BYTES x86_address_bytes
144 extern int x86_address_bytes (void);
146 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
148 #define NO_RELOC BFD_RELOC_NONE
150 void i386_validate_fix (struct fix
*);
151 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
153 #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X)
154 extern int tc_i386_fix_adjustable (struct fix
*);
156 /* Values passed to md_apply_fix don't include the symbol value. */
157 #define MD_APPLY_SYM_VALUE(FIX) 0
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)
165 #define EXTERN_FORCE_RELOC \
166 (OUTPUT_FLAVOR == bfd_target_elf_flavour)
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. .*/
175 #define TC_FORCE_RELOCATION_LOCAL(FIX) \
176 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
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 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX \
181 || (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX)
183 extern int i386_parse_name (char *, expressionS
*, char *);
184 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
186 extern operatorT
i386_operator (const char *name
, unsigned int operands
, char *);
187 #define md_operator i386_operator
189 extern int i386_need_index_operator (void);
190 #define md_need_index_operator i386_need_index_operator
192 #define md_register_arithmetic 0
194 extern const struct relax_type md_relax_table
[];
195 #define TC_GENERIC_RELAX_TABLE md_relax_table
197 extern int optimize_align_code
;
199 #define md_do_align(n, fill, len, max, around) \
202 && optimize_align_code \
204 || ((char)*(fill) == (char)0x90 && (len) == 1)) \
205 && subseg_text_p (now_seg)) \
207 frag_align_code ((n), (max)); \
211 #define MAX_MEM_FOR_RS_ALIGN_CODE (alignment ? ((1 << alignment) - 1) : 1)
213 extern void i386_cons_align (int);
214 #define md_cons_align(nbytes) i386_cons_align (nbytes)
216 void i386_print_statistics (FILE *);
217 #define tc_print_statistics i386_print_statistics
219 extern unsigned int i386_frag_max_var (fragS
*);
220 #define md_frag_max_var i386_frag_max_var
222 extern long i386_generic_table_relax_frag (segT
, fragS
*, long);
223 #define md_generic_table_relax_frag(segment, fragP, stretch) \
224 i386_generic_table_relax_frag (segment, fragP, stretch)
226 #define md_number_to_chars number_to_chars_littleendian
234 PROCESSOR_PENTIUMPRO
,
254 extern enum processor_type cpu_arch_tune
;
255 extern enum processor_type cpu_arch_isa
;
256 extern i386_cpu_flags cpu_arch_isa_flags
;
258 struct i386_tc_frag_data
262 fragS
*padding_fragP
;
265 addressT padding_address
;
266 enum processor_type isa
;
267 i386_cpu_flags isa_flags
;
268 enum processor_type tune
;
269 unsigned int max_bytes
;
270 unsigned char length
;
271 unsigned char last_length
;
272 unsigned char max_prefix_length
;
273 unsigned char prefix_length
;
274 unsigned char default_prefix
;
275 unsigned char cmp_size
;
276 unsigned int classified
: 1;
277 unsigned int branch_type
: 3;
280 /* We need to emit the right NOP pattern in .align frags. This is
281 done after the text-to-bits assembly pass, so we need to mark it with
282 the isa/tune settings at the time the .align was assembled. */
283 #define TC_FRAG_TYPE struct i386_tc_frag_data
285 #define TC_FRAG_INIT(FRAGP, MAX_BYTES) \
288 (FRAGP)->tc_frag_data.u.padding_fragP = NULL; \
289 (FRAGP)->tc_frag_data.padding_address = 0; \
290 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \
291 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \
292 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \
293 (FRAGP)->tc_frag_data.max_bytes = (MAX_BYTES); \
294 (FRAGP)->tc_frag_data.length = 0; \
295 (FRAGP)->tc_frag_data.last_length = 0; \
296 (FRAGP)->tc_frag_data.max_prefix_length = 0; \
297 (FRAGP)->tc_frag_data.prefix_length = 0; \
298 (FRAGP)->tc_frag_data.default_prefix = 0; \
299 (FRAGP)->tc_frag_data.cmp_size = 0; \
300 (FRAGP)->tc_frag_data.classified = 0; \
301 (FRAGP)->tc_frag_data.branch_type = 0; \
305 #define WORKING_DOT_WORD 1
307 /* How to generate NOPs for .nop direct directive. */
308 extern void i386_generate_nops (fragS
*, char *, offsetT
, int);
309 #define md_generate_nops(frag, where, amount, control) \
310 i386_generate_nops ((frag), (where), (amount), (control))
312 #define HANDLE_ALIGN(fragP) \
313 if (fragP->fr_type == rs_align_code) \
315 offsetT __count = (fragP->fr_next->fr_address \
316 - fragP->fr_address \
319 && (unsigned int) __count <= fragP->tc_frag_data.max_bytes) \
320 md_generate_nops (fragP, fragP->fr_literal + fragP->fr_fix, \
324 /* We want .cfi_* pseudo-ops for generating unwind info. */
325 #define TARGET_USE_CFIPOP 1
327 extern unsigned int x86_dwarf2_return_column
;
328 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
330 extern int x86_cie_data_alignment
;
331 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
333 extern int x86_dwarf2_addr_size (void);
334 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size ()
336 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
337 extern void tc_x86_parse_to_dw2regnum (expressionS
*);
339 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
340 extern void tc_x86_frame_initial_instructions (void);
342 #define md_elf_section_type(str,len) i386_elf_section_type (str, len)
343 extern int i386_elf_section_type (const char *, size_t);
346 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
347 extern void i386_solaris_fix_up_eh_frame (segT
);
350 /* Support for SHF_X86_64_LARGE */
351 extern bfd_vma
x86_64_section_word (char *, size_t);
352 extern bfd_vma
x86_64_section_letter (int, const char **);
353 #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG)
354 #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN)
356 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
357 extern void x86_cleanup (void);
358 #define md_cleanup() x86_cleanup ()
363 #define O_secrel O_md1
365 #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
366 void tc_pe_dwarf2_emit_offset (symbolS
*, unsigned int);
370 /* X_add_symbol:X_op_symbol (Intel mode only) */
371 #define O_full_ptr O_md2
375 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX))
377 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \
378 (obj_mach_o_force_reloc_sub_same (FIX, SEG))
380 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \
381 (obj_mach_o_force_reloc_sub_local (FIX, SEG))
383 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
385 #endif /* OBJ_MACH_O */