Commit | Line | Data |
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b534c6d3 | 1 | /* tc-i386.c -- Assemble code for the Intel 80386 |
f7e42eb4 | 2 | Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4dc85607 | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
47926f60 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
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 2, 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 | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
47926f60 KH |
23 | /* Intel 80386 machine specific gas. |
24 | Written by Eliot Dresselhaus (eliot@mgm.mit.edu). | |
3e73aa7c | 25 | x86_64 support by Jan Hubicka (jh@suse.cz) |
0f10071e | 26 | VIA PadLock support by Michal Ludvig (mludvig@suse.cz) |
47926f60 KH |
27 | Bugs & suggestions are completely welcome. This is free software. |
28 | Please help us make it better. */ | |
252b5132 | 29 | |
252b5132 | 30 | #include "as.h" |
3882b010 | 31 | #include "safe-ctype.h" |
252b5132 | 32 | #include "subsegs.h" |
316e2c05 | 33 | #include "dwarf2dbg.h" |
54cfded0 | 34 | #include "dw2gencfi.h" |
d2b2c203 | 35 | #include "elf/x86-64.h" |
252b5132 | 36 | |
252b5132 RH |
37 | #ifndef REGISTER_WARNINGS |
38 | #define REGISTER_WARNINGS 1 | |
39 | #endif | |
40 | ||
c3332e24 | 41 | #ifndef INFER_ADDR_PREFIX |
eecb386c | 42 | #define INFER_ADDR_PREFIX 1 |
c3332e24 AM |
43 | #endif |
44 | ||
252b5132 RH |
45 | #ifndef SCALE1_WHEN_NO_INDEX |
46 | /* Specifying a scale factor besides 1 when there is no index is | |
47 | futile. eg. `mov (%ebx,2),%al' does exactly the same as | |
48 | `mov (%ebx),%al'. To slavishly follow what the programmer | |
49 | specified, set SCALE1_WHEN_NO_INDEX to 0. */ | |
50 | #define SCALE1_WHEN_NO_INDEX 1 | |
51 | #endif | |
52 | ||
29b0f896 AM |
53 | #ifndef DEFAULT_ARCH |
54 | #define DEFAULT_ARCH "i386" | |
246fcdee | 55 | #endif |
252b5132 | 56 | |
edde18a5 AM |
57 | #ifndef INLINE |
58 | #if __GNUC__ >= 2 | |
59 | #define INLINE __inline__ | |
60 | #else | |
61 | #define INLINE | |
62 | #endif | |
63 | #endif | |
64 | ||
e3bb37b5 L |
65 | static void set_code_flag (int); |
66 | static void set_16bit_gcc_code_flag (int); | |
67 | static void set_intel_syntax (int); | |
68 | static void set_cpu_arch (int); | |
6482c264 | 69 | #ifdef TE_PE |
e3bb37b5 | 70 | static void pe_directive_secrel (int); |
6482c264 | 71 | #endif |
e3bb37b5 L |
72 | static void signed_cons (int); |
73 | static char *output_invalid (int c); | |
74 | static int i386_operand (char *); | |
75 | static int i386_intel_operand (char *, int); | |
76 | static const reg_entry *parse_register (char *, char **); | |
77 | static char *parse_insn (char *, char *); | |
78 | static char *parse_operands (char *, const char *); | |
79 | static void swap_operands (void); | |
4d456e3d | 80 | static void swap_2_operands (int, int); |
e3bb37b5 L |
81 | static void optimize_imm (void); |
82 | static void optimize_disp (void); | |
83 | static int match_template (void); | |
84 | static int check_string (void); | |
85 | static int process_suffix (void); | |
86 | static int check_byte_reg (void); | |
87 | static int check_long_reg (void); | |
88 | static int check_qword_reg (void); | |
89 | static int check_word_reg (void); | |
90 | static int finalize_imm (void); | |
91 | static int process_operands (void); | |
92 | static const seg_entry *build_modrm_byte (void); | |
93 | static void output_insn (void); | |
94 | static void output_imm (fragS *, offsetT); | |
95 | static void output_disp (fragS *, offsetT); | |
29b0f896 | 96 | #ifndef I386COFF |
e3bb37b5 | 97 | static void s_bss (int); |
252b5132 | 98 | #endif |
17d4e2a2 L |
99 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
100 | static void handle_large_common (int small ATTRIBUTE_UNUSED); | |
101 | #endif | |
252b5132 | 102 | |
a847613f | 103 | static const char *default_arch = DEFAULT_ARCH; |
3e73aa7c | 104 | |
252b5132 | 105 | /* 'md_assemble ()' gathers together information and puts it into a |
47926f60 | 106 | i386_insn. */ |
252b5132 | 107 | |
520dc8e8 AM |
108 | union i386_op |
109 | { | |
110 | expressionS *disps; | |
111 | expressionS *imms; | |
112 | const reg_entry *regs; | |
113 | }; | |
114 | ||
252b5132 RH |
115 | struct _i386_insn |
116 | { | |
47926f60 | 117 | /* TM holds the template for the insn were currently assembling. */ |
252b5132 RH |
118 | template tm; |
119 | ||
120 | /* SUFFIX holds the instruction mnemonic suffix if given. | |
121 | (e.g. 'l' for 'movl') */ | |
122 | char suffix; | |
123 | ||
47926f60 | 124 | /* OPERANDS gives the number of given operands. */ |
252b5132 RH |
125 | unsigned int operands; |
126 | ||
127 | /* REG_OPERANDS, DISP_OPERANDS, MEM_OPERANDS, IMM_OPERANDS give the number | |
128 | of given register, displacement, memory operands and immediate | |
47926f60 | 129 | operands. */ |
252b5132 RH |
130 | unsigned int reg_operands, disp_operands, mem_operands, imm_operands; |
131 | ||
132 | /* TYPES [i] is the type (see above #defines) which tells us how to | |
520dc8e8 | 133 | use OP[i] for the corresponding operand. */ |
252b5132 RH |
134 | unsigned int types[MAX_OPERANDS]; |
135 | ||
520dc8e8 AM |
136 | /* Displacement expression, immediate expression, or register for each |
137 | operand. */ | |
138 | union i386_op op[MAX_OPERANDS]; | |
252b5132 | 139 | |
3e73aa7c JH |
140 | /* Flags for operands. */ |
141 | unsigned int flags[MAX_OPERANDS]; | |
142 | #define Operand_PCrel 1 | |
143 | ||
252b5132 | 144 | /* Relocation type for operand */ |
f86103b7 | 145 | enum bfd_reloc_code_real reloc[MAX_OPERANDS]; |
252b5132 | 146 | |
252b5132 RH |
147 | /* BASE_REG, INDEX_REG, and LOG2_SCALE_FACTOR are used to encode |
148 | the base index byte below. */ | |
149 | const reg_entry *base_reg; | |
150 | const reg_entry *index_reg; | |
151 | unsigned int log2_scale_factor; | |
152 | ||
153 | /* SEG gives the seg_entries of this insn. They are zero unless | |
47926f60 | 154 | explicit segment overrides are given. */ |
ce8a8b2f | 155 | const seg_entry *seg[2]; |
252b5132 RH |
156 | |
157 | /* PREFIX holds all the given prefix opcodes (usually null). | |
158 | PREFIXES is the number of prefix opcodes. */ | |
159 | unsigned int prefixes; | |
160 | unsigned char prefix[MAX_PREFIXES]; | |
161 | ||
162 | /* RM and SIB are the modrm byte and the sib byte where the | |
163 | addressing modes of this insn are encoded. */ | |
164 | ||
165 | modrm_byte rm; | |
3e73aa7c | 166 | rex_byte rex; |
252b5132 RH |
167 | sib_byte sib; |
168 | }; | |
169 | ||
170 | typedef struct _i386_insn i386_insn; | |
171 | ||
172 | /* List of chars besides those in app.c:symbol_chars that can start an | |
173 | operand. Used to prevent the scrubber eating vital white-space. */ | |
32137342 | 174 | const char extra_symbol_chars[] = "*%-([" |
252b5132 | 175 | #ifdef LEX_AT |
32137342 NC |
176 | "@" |
177 | #endif | |
178 | #ifdef LEX_QM | |
179 | "?" | |
252b5132 | 180 | #endif |
32137342 | 181 | ; |
252b5132 | 182 | |
29b0f896 AM |
183 | #if (defined (TE_I386AIX) \ |
184 | || ((defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) \ | |
3896cfd5 | 185 | && !defined (TE_GNU) \ |
29b0f896 | 186 | && !defined (TE_LINUX) \ |
32137342 | 187 | && !defined (TE_NETWARE) \ |
29b0f896 AM |
188 | && !defined (TE_FreeBSD) \ |
189 | && !defined (TE_NetBSD))) | |
252b5132 | 190 | /* This array holds the chars that always start a comment. If the |
b3b91714 AM |
191 | pre-processor is disabled, these aren't very useful. The option |
192 | --divide will remove '/' from this list. */ | |
193 | const char *i386_comment_chars = "#/"; | |
194 | #define SVR4_COMMENT_CHARS 1 | |
252b5132 | 195 | #define PREFIX_SEPARATOR '\\' |
252b5132 | 196 | |
b3b91714 AM |
197 | #else |
198 | const char *i386_comment_chars = "#"; | |
199 | #define PREFIX_SEPARATOR '/' | |
200 | #endif | |
201 | ||
252b5132 RH |
202 | /* This array holds the chars that only start a comment at the beginning of |
203 | a line. If the line seems to have the form '# 123 filename' | |
ce8a8b2f AM |
204 | .line and .file directives will appear in the pre-processed output. |
205 | Note that input_file.c hand checks for '#' at the beginning of the | |
252b5132 | 206 | first line of the input file. This is because the compiler outputs |
ce8a8b2f AM |
207 | #NO_APP at the beginning of its output. |
208 | Also note that comments started like this one will always work if | |
252b5132 | 209 | '/' isn't otherwise defined. */ |
b3b91714 | 210 | const char line_comment_chars[] = "#/"; |
252b5132 | 211 | |
63a0b638 | 212 | const char line_separator_chars[] = ";"; |
252b5132 | 213 | |
ce8a8b2f AM |
214 | /* Chars that can be used to separate mant from exp in floating point |
215 | nums. */ | |
252b5132 RH |
216 | const char EXP_CHARS[] = "eE"; |
217 | ||
ce8a8b2f AM |
218 | /* Chars that mean this number is a floating point constant |
219 | As in 0f12.456 | |
220 | or 0d1.2345e12. */ | |
252b5132 RH |
221 | const char FLT_CHARS[] = "fFdDxX"; |
222 | ||
ce8a8b2f | 223 | /* Tables for lexical analysis. */ |
252b5132 RH |
224 | static char mnemonic_chars[256]; |
225 | static char register_chars[256]; | |
226 | static char operand_chars[256]; | |
227 | static char identifier_chars[256]; | |
228 | static char digit_chars[256]; | |
229 | ||
ce8a8b2f | 230 | /* Lexical macros. */ |
252b5132 RH |
231 | #define is_mnemonic_char(x) (mnemonic_chars[(unsigned char) x]) |
232 | #define is_operand_char(x) (operand_chars[(unsigned char) x]) | |
233 | #define is_register_char(x) (register_chars[(unsigned char) x]) | |
234 | #define is_space_char(x) ((x) == ' ') | |
235 | #define is_identifier_char(x) (identifier_chars[(unsigned char) x]) | |
236 | #define is_digit_char(x) (digit_chars[(unsigned char) x]) | |
237 | ||
0234cb7c | 238 | /* All non-digit non-letter characters that may occur in an operand. */ |
252b5132 RH |
239 | static char operand_special_chars[] = "%$-+(,)*._~/<>|&^!:[@]"; |
240 | ||
241 | /* md_assemble() always leaves the strings it's passed unaltered. To | |
242 | effect this we maintain a stack of saved characters that we've smashed | |
243 | with '\0's (indicating end of strings for various sub-fields of the | |
47926f60 | 244 | assembler instruction). */ |
252b5132 | 245 | static char save_stack[32]; |
ce8a8b2f | 246 | static char *save_stack_p; |
252b5132 RH |
247 | #define END_STRING_AND_SAVE(s) \ |
248 | do { *save_stack_p++ = *(s); *(s) = '\0'; } while (0) | |
249 | #define RESTORE_END_STRING(s) \ | |
250 | do { *(s) = *--save_stack_p; } while (0) | |
251 | ||
47926f60 | 252 | /* The instruction we're assembling. */ |
252b5132 RH |
253 | static i386_insn i; |
254 | ||
255 | /* Possible templates for current insn. */ | |
256 | static const templates *current_templates; | |
257 | ||
31b2323c L |
258 | /* Per instruction expressionS buffers: max displacements & immediates. */ |
259 | static expressionS disp_expressions[MAX_MEMORY_OPERANDS]; | |
260 | static expressionS im_expressions[MAX_IMMEDIATE_OPERANDS]; | |
252b5132 | 261 | |
47926f60 KH |
262 | /* Current operand we are working on. */ |
263 | static int this_operand; | |
252b5132 | 264 | |
3e73aa7c JH |
265 | /* We support four different modes. FLAG_CODE variable is used to distinguish |
266 | these. */ | |
267 | ||
268 | enum flag_code { | |
269 | CODE_32BIT, | |
270 | CODE_16BIT, | |
271 | CODE_64BIT }; | |
f3c180ae | 272 | #define NUM_FLAG_CODE ((int) CODE_64BIT + 1) |
3e73aa7c JH |
273 | |
274 | static enum flag_code flag_code; | |
4fa24527 | 275 | static unsigned int object_64bit; |
3e73aa7c JH |
276 | static int use_rela_relocations = 0; |
277 | ||
278 | /* The names used to print error messages. */ | |
b77a7acd | 279 | static const char *flag_code_names[] = |
3e73aa7c JH |
280 | { |
281 | "32", | |
282 | "16", | |
283 | "64" | |
284 | }; | |
252b5132 | 285 | |
47926f60 KH |
286 | /* 1 for intel syntax, |
287 | 0 if att syntax. */ | |
288 | static int intel_syntax = 0; | |
252b5132 | 289 | |
47926f60 KH |
290 | /* 1 if register prefix % not required. */ |
291 | static int allow_naked_reg = 0; | |
252b5132 | 292 | |
2ca3ace5 L |
293 | /* Register prefix used for error message. */ |
294 | static const char *register_prefix = "%"; | |
295 | ||
47926f60 KH |
296 | /* Used in 16 bit gcc mode to add an l suffix to call, ret, enter, |
297 | leave, push, and pop instructions so that gcc has the same stack | |
298 | frame as in 32 bit mode. */ | |
299 | static char stackop_size = '\0'; | |
eecb386c | 300 | |
12b55ccc L |
301 | /* Non-zero to optimize code alignment. */ |
302 | int optimize_align_code = 1; | |
303 | ||
47926f60 KH |
304 | /* Non-zero to quieten some warnings. */ |
305 | static int quiet_warnings = 0; | |
a38cf1db | 306 | |
47926f60 KH |
307 | /* CPU name. */ |
308 | static const char *cpu_arch_name = NULL; | |
5c6af06e | 309 | static const char *cpu_sub_arch_name = NULL; |
a38cf1db | 310 | |
47926f60 | 311 | /* CPU feature flags. */ |
29b0f896 | 312 | static unsigned int cpu_arch_flags = CpuUnknownFlags | CpuNo64; |
a38cf1db | 313 | |
ccc9c027 L |
314 | /* If we have selected a cpu we are generating instructions for. */ |
315 | static int cpu_arch_tune_set = 0; | |
316 | ||
9103f4f4 L |
317 | /* Cpu we are generating instructions for. */ |
318 | static enum processor_type cpu_arch_tune = PROCESSOR_UNKNOWN; | |
319 | ||
320 | /* CPU feature flags of cpu we are generating instructions for. */ | |
321 | static unsigned int cpu_arch_tune_flags = 0; | |
322 | ||
ccc9c027 L |
323 | /* CPU instruction set architecture used. */ |
324 | static enum processor_type cpu_arch_isa = PROCESSOR_UNKNOWN; | |
325 | ||
9103f4f4 L |
326 | /* CPU feature flags of instruction set architecture used. */ |
327 | static unsigned int cpu_arch_isa_flags = 0; | |
328 | ||
fddf5b5b AM |
329 | /* If set, conditional jumps are not automatically promoted to handle |
330 | larger than a byte offset. */ | |
331 | static unsigned int no_cond_jump_promotion = 0; | |
332 | ||
29b0f896 | 333 | /* Pre-defined "_GLOBAL_OFFSET_TABLE_". */ |
87c245cc | 334 | static symbolS *GOT_symbol; |
29b0f896 | 335 | |
a4447b93 RH |
336 | /* The dwarf2 return column, adjusted for 32 or 64 bit. */ |
337 | unsigned int x86_dwarf2_return_column; | |
338 | ||
339 | /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ | |
340 | int x86_cie_data_alignment; | |
341 | ||
252b5132 | 342 | /* Interface to relax_segment. |
fddf5b5b AM |
343 | There are 3 major relax states for 386 jump insns because the |
344 | different types of jumps add different sizes to frags when we're | |
345 | figuring out what sort of jump to choose to reach a given label. */ | |
252b5132 | 346 | |
47926f60 | 347 | /* Types. */ |
93c2a809 AM |
348 | #define UNCOND_JUMP 0 |
349 | #define COND_JUMP 1 | |
350 | #define COND_JUMP86 2 | |
fddf5b5b | 351 | |
47926f60 | 352 | /* Sizes. */ |
252b5132 RH |
353 | #define CODE16 1 |
354 | #define SMALL 0 | |
29b0f896 | 355 | #define SMALL16 (SMALL | CODE16) |
252b5132 | 356 | #define BIG 2 |
29b0f896 | 357 | #define BIG16 (BIG | CODE16) |
252b5132 RH |
358 | |
359 | #ifndef INLINE | |
360 | #ifdef __GNUC__ | |
361 | #define INLINE __inline__ | |
362 | #else | |
363 | #define INLINE | |
364 | #endif | |
365 | #endif | |
366 | ||
fddf5b5b AM |
367 | #define ENCODE_RELAX_STATE(type, size) \ |
368 | ((relax_substateT) (((type) << 2) | (size))) | |
369 | #define TYPE_FROM_RELAX_STATE(s) \ | |
370 | ((s) >> 2) | |
371 | #define DISP_SIZE_FROM_RELAX_STATE(s) \ | |
372 | ((((s) & 3) == BIG ? 4 : (((s) & 3) == BIG16 ? 2 : 1))) | |
252b5132 RH |
373 | |
374 | /* This table is used by relax_frag to promote short jumps to long | |
375 | ones where necessary. SMALL (short) jumps may be promoted to BIG | |
376 | (32 bit long) ones, and SMALL16 jumps to BIG16 (16 bit long). We | |
377 | don't allow a short jump in a 32 bit code segment to be promoted to | |
378 | a 16 bit offset jump because it's slower (requires data size | |
379 | prefix), and doesn't work, unless the destination is in the bottom | |
380 | 64k of the code segment (The top 16 bits of eip are zeroed). */ | |
381 | ||
382 | const relax_typeS md_relax_table[] = | |
383 | { | |
24eab124 AM |
384 | /* The fields are: |
385 | 1) most positive reach of this state, | |
386 | 2) most negative reach of this state, | |
93c2a809 | 387 | 3) how many bytes this mode will have in the variable part of the frag |
ce8a8b2f | 388 | 4) which index into the table to try if we can't fit into this one. */ |
252b5132 | 389 | |
fddf5b5b | 390 | /* UNCOND_JUMP states. */ |
93c2a809 AM |
391 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (UNCOND_JUMP, BIG)}, |
392 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (UNCOND_JUMP, BIG16)}, | |
393 | /* dword jmp adds 4 bytes to frag: | |
394 | 0 extra opcode bytes, 4 displacement bytes. */ | |
252b5132 | 395 | {0, 0, 4, 0}, |
93c2a809 AM |
396 | /* word jmp adds 2 byte2 to frag: |
397 | 0 extra opcode bytes, 2 displacement bytes. */ | |
252b5132 RH |
398 | {0, 0, 2, 0}, |
399 | ||
93c2a809 AM |
400 | /* COND_JUMP states. */ |
401 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP, BIG)}, | |
402 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP, BIG16)}, | |
403 | /* dword conditionals adds 5 bytes to frag: | |
404 | 1 extra opcode byte, 4 displacement bytes. */ | |
405 | {0, 0, 5, 0}, | |
fddf5b5b | 406 | /* word conditionals add 3 bytes to frag: |
93c2a809 AM |
407 | 1 extra opcode byte, 2 displacement bytes. */ |
408 | {0, 0, 3, 0}, | |
409 | ||
410 | /* COND_JUMP86 states. */ | |
411 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP86, BIG)}, | |
412 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP86, BIG16)}, | |
413 | /* dword conditionals adds 5 bytes to frag: | |
414 | 1 extra opcode byte, 4 displacement bytes. */ | |
415 | {0, 0, 5, 0}, | |
416 | /* word conditionals add 4 bytes to frag: | |
417 | 1 displacement byte and a 3 byte long branch insn. */ | |
418 | {0, 0, 4, 0} | |
252b5132 RH |
419 | }; |
420 | ||
9103f4f4 L |
421 | static const arch_entry cpu_arch[] = |
422 | { | |
423 | {"generic32", PROCESSOR_GENERIC32, | |
d32cad65 | 424 | Cpu186|Cpu286|Cpu386}, |
9103f4f4 | 425 | {"generic64", PROCESSOR_GENERIC64, |
d32cad65 | 426 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX |
9103f4f4 L |
427 | |CpuMMX2|CpuSSE|CpuSSE2}, |
428 | {"i8086", PROCESSOR_UNKNOWN, | |
d32cad65 | 429 | 0}, |
9103f4f4 | 430 | {"i186", PROCESSOR_UNKNOWN, |
d32cad65 | 431 | Cpu186}, |
9103f4f4 | 432 | {"i286", PROCESSOR_UNKNOWN, |
d32cad65 | 433 | Cpu186|Cpu286}, |
9103f4f4 | 434 | {"i386", PROCESSOR_GENERIC32, |
d32cad65 | 435 | Cpu186|Cpu286|Cpu386}, |
9103f4f4 | 436 | {"i486", PROCESSOR_I486, |
d32cad65 | 437 | Cpu186|Cpu286|Cpu386|Cpu486}, |
9103f4f4 | 438 | {"i586", PROCESSOR_PENTIUM, |
d32cad65 | 439 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586}, |
9103f4f4 | 440 | {"i686", PROCESSOR_PENTIUMPRO, |
d32cad65 | 441 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686}, |
9103f4f4 | 442 | {"pentium", PROCESSOR_PENTIUM, |
d32cad65 | 443 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586}, |
9103f4f4 | 444 | {"pentiumpro",PROCESSOR_PENTIUMPRO, |
d32cad65 | 445 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686}, |
9103f4f4 | 446 | {"pentiumii", PROCESSOR_PENTIUMPRO, |
d32cad65 | 447 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuMMX}, |
9103f4f4 | 448 | {"pentiumiii",PROCESSOR_PENTIUMPRO, |
d32cad65 | 449 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuMMX|CpuMMX2|CpuSSE}, |
9103f4f4 | 450 | {"pentium4", PROCESSOR_PENTIUM4, |
d32cad65 | 451 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX |
9103f4f4 L |
452 | |CpuMMX2|CpuSSE|CpuSSE2}, |
453 | {"prescott", PROCESSOR_NOCONA, | |
d32cad65 | 454 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX |
9103f4f4 L |
455 | |CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3}, |
456 | {"nocona", PROCESSOR_NOCONA, | |
d32cad65 | 457 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX |
9103f4f4 | 458 | |CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3}, |
ef05d495 | 459 | {"yonah", PROCESSOR_CORE, |
d32cad65 | 460 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX |
9103f4f4 | 461 | |CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3}, |
ef05d495 | 462 | {"core", PROCESSOR_CORE, |
d32cad65 | 463 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX |
ef05d495 L |
464 | |CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3}, |
465 | {"merom", PROCESSOR_CORE2, | |
466 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX | |
467 | |CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3}, | |
468 | {"core2", PROCESSOR_CORE2, | |
469 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX | |
470 | |CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3}, | |
9103f4f4 | 471 | {"k6", PROCESSOR_K6, |
d32cad65 | 472 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuK6|CpuMMX}, |
9103f4f4 | 473 | {"k6_2", PROCESSOR_K6, |
d32cad65 | 474 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuK6|CpuMMX|Cpu3dnow}, |
9103f4f4 | 475 | {"athlon", PROCESSOR_ATHLON, |
d32cad65 | 476 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6 |
9103f4f4 L |
477 | |CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA}, |
478 | {"sledgehammer", PROCESSOR_K8, | |
d32cad65 | 479 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6 |
9103f4f4 L |
480 | |CpuSledgehammer|CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2}, |
481 | {"opteron", PROCESSOR_K8, | |
d32cad65 | 482 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6 |
9103f4f4 L |
483 | |CpuSledgehammer|CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2}, |
484 | {"k8", PROCESSOR_K8, | |
d32cad65 | 485 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6 |
9103f4f4 | 486 | |CpuSledgehammer|CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2}, |
050dfa73 | 487 | {"amdfam10", PROCESSOR_AMDFAM10, |
d32cad65 L |
488 | Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6|CpuSledgehammer |
489 | |CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuSSE3|CpuSSE4a | |
490 | |CpuABM}, | |
9103f4f4 L |
491 | {".mmx", PROCESSOR_UNKNOWN, |
492 | CpuMMX}, | |
493 | {".sse", PROCESSOR_UNKNOWN, | |
494 | CpuMMX|CpuMMX2|CpuSSE}, | |
495 | {".sse2", PROCESSOR_UNKNOWN, | |
496 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2}, | |
497 | {".sse3", PROCESSOR_UNKNOWN, | |
498 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3}, | |
ef05d495 L |
499 | {".ssse3", PROCESSOR_UNKNOWN, |
500 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3}, | |
42903f7f L |
501 | {".sse4.1", PROCESSOR_UNKNOWN, |
502 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuSSE4_1}, | |
381d071f L |
503 | {".sse4.2", PROCESSOR_UNKNOWN, |
504 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuSSE4}, | |
505 | {".sse4", PROCESSOR_UNKNOWN, | |
506 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuSSE4}, | |
9103f4f4 L |
507 | {".3dnow", PROCESSOR_UNKNOWN, |
508 | CpuMMX|Cpu3dnow}, | |
509 | {".3dnowa", PROCESSOR_UNKNOWN, | |
510 | CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA}, | |
511 | {".padlock", PROCESSOR_UNKNOWN, | |
512 | CpuPadLock}, | |
513 | {".pacifica", PROCESSOR_UNKNOWN, | |
514 | CpuSVME}, | |
515 | {".svme", PROCESSOR_UNKNOWN, | |
050dfa73 MM |
516 | CpuSVME}, |
517 | {".sse4a", PROCESSOR_UNKNOWN, | |
518 | CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuSSE4a}, | |
519 | {".abm", PROCESSOR_UNKNOWN, | |
520 | CpuABM} | |
e413e4e9 AM |
521 | }; |
522 | ||
29b0f896 AM |
523 | const pseudo_typeS md_pseudo_table[] = |
524 | { | |
525 | #if !defined(OBJ_AOUT) && !defined(USE_ALIGN_PTWO) | |
526 | {"align", s_align_bytes, 0}, | |
527 | #else | |
528 | {"align", s_align_ptwo, 0}, | |
529 | #endif | |
530 | {"arch", set_cpu_arch, 0}, | |
531 | #ifndef I386COFF | |
532 | {"bss", s_bss, 0}, | |
533 | #endif | |
534 | {"ffloat", float_cons, 'f'}, | |
535 | {"dfloat", float_cons, 'd'}, | |
536 | {"tfloat", float_cons, 'x'}, | |
537 | {"value", cons, 2}, | |
d182319b | 538 | {"slong", signed_cons, 4}, |
29b0f896 AM |
539 | {"noopt", s_ignore, 0}, |
540 | {"optim", s_ignore, 0}, | |
541 | {"code16gcc", set_16bit_gcc_code_flag, CODE_16BIT}, | |
542 | {"code16", set_code_flag, CODE_16BIT}, | |
543 | {"code32", set_code_flag, CODE_32BIT}, | |
544 | {"code64", set_code_flag, CODE_64BIT}, | |
545 | {"intel_syntax", set_intel_syntax, 1}, | |
546 | {"att_syntax", set_intel_syntax, 0}, | |
3b22753a L |
547 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
548 | {"largecomm", handle_large_common, 0}, | |
07a53e5c | 549 | #else |
e3bb37b5 | 550 | {"file", (void (*) (int)) dwarf2_directive_file, 0}, |
07a53e5c RH |
551 | {"loc", dwarf2_directive_loc, 0}, |
552 | {"loc_mark_labels", dwarf2_directive_loc_mark_labels, 0}, | |
3b22753a | 553 | #endif |
6482c264 NC |
554 | #ifdef TE_PE |
555 | {"secrel32", pe_directive_secrel, 0}, | |
556 | #endif | |
29b0f896 AM |
557 | {0, 0, 0} |
558 | }; | |
559 | ||
560 | /* For interface with expression (). */ | |
561 | extern char *input_line_pointer; | |
562 | ||
563 | /* Hash table for instruction mnemonic lookup. */ | |
564 | static struct hash_control *op_hash; | |
565 | ||
566 | /* Hash table for register lookup. */ | |
567 | static struct hash_control *reg_hash; | |
568 | \f | |
252b5132 | 569 | void |
e3bb37b5 | 570 | i386_align_code (fragS *fragP, int count) |
252b5132 | 571 | { |
ce8a8b2f AM |
572 | /* Various efficient no-op patterns for aligning code labels. |
573 | Note: Don't try to assemble the instructions in the comments. | |
574 | 0L and 0w are not legal. */ | |
252b5132 RH |
575 | static const char f32_1[] = |
576 | {0x90}; /* nop */ | |
577 | static const char f32_2[] = | |
ccc9c027 | 578 | {0x66,0x90}; /* xchg %ax,%ax */ |
252b5132 RH |
579 | static const char f32_3[] = |
580 | {0x8d,0x76,0x00}; /* leal 0(%esi),%esi */ | |
581 | static const char f32_4[] = | |
582 | {0x8d,0x74,0x26,0x00}; /* leal 0(%esi,1),%esi */ | |
583 | static const char f32_5[] = | |
584 | {0x90, /* nop */ | |
585 | 0x8d,0x74,0x26,0x00}; /* leal 0(%esi,1),%esi */ | |
586 | static const char f32_6[] = | |
587 | {0x8d,0xb6,0x00,0x00,0x00,0x00}; /* leal 0L(%esi),%esi */ | |
588 | static const char f32_7[] = | |
589 | {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00}; /* leal 0L(%esi,1),%esi */ | |
590 | static const char f32_8[] = | |
591 | {0x90, /* nop */ | |
592 | 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00}; /* leal 0L(%esi,1),%esi */ | |
593 | static const char f32_9[] = | |
594 | {0x89,0xf6, /* movl %esi,%esi */ | |
595 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
596 | static const char f32_10[] = | |
597 | {0x8d,0x76,0x00, /* leal 0(%esi),%esi */ | |
598 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
599 | static const char f32_11[] = | |
600 | {0x8d,0x74,0x26,0x00, /* leal 0(%esi,1),%esi */ | |
601 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
602 | static const char f32_12[] = | |
603 | {0x8d,0xb6,0x00,0x00,0x00,0x00, /* leal 0L(%esi),%esi */ | |
604 | 0x8d,0xbf,0x00,0x00,0x00,0x00}; /* leal 0L(%edi),%edi */ | |
605 | static const char f32_13[] = | |
606 | {0x8d,0xb6,0x00,0x00,0x00,0x00, /* leal 0L(%esi),%esi */ | |
607 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
608 | static const char f32_14[] = | |
609 | {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00, /* leal 0L(%esi,1),%esi */ | |
610 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
611 | static const char f32_15[] = | |
612 | {0xeb,0x0d,0x90,0x90,0x90,0x90,0x90, /* jmp .+15; lotsa nops */ | |
613 | 0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90}; | |
c3332e24 AM |
614 | static const char f16_3[] = |
615 | {0x8d,0x74,0x00}; /* lea 0(%esi),%esi */ | |
252b5132 RH |
616 | static const char f16_4[] = |
617 | {0x8d,0xb4,0x00,0x00}; /* lea 0w(%si),%si */ | |
618 | static const char f16_5[] = | |
619 | {0x90, /* nop */ | |
620 | 0x8d,0xb4,0x00,0x00}; /* lea 0w(%si),%si */ | |
621 | static const char f16_6[] = | |
622 | {0x89,0xf6, /* mov %si,%si */ | |
623 | 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */ | |
624 | static const char f16_7[] = | |
625 | {0x8d,0x74,0x00, /* lea 0(%si),%si */ | |
626 | 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */ | |
627 | static const char f16_8[] = | |
628 | {0x8d,0xb4,0x00,0x00, /* lea 0w(%si),%si */ | |
629 | 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */ | |
630 | static const char *const f32_patt[] = { | |
631 | f32_1, f32_2, f32_3, f32_4, f32_5, f32_6, f32_7, f32_8, | |
632 | f32_9, f32_10, f32_11, f32_12, f32_13, f32_14, f32_15 | |
633 | }; | |
634 | static const char *const f16_patt[] = { | |
c3332e24 | 635 | f32_1, f32_2, f16_3, f16_4, f16_5, f16_6, f16_7, f16_8, |
252b5132 RH |
636 | f32_15, f32_15, f32_15, f32_15, f32_15, f32_15, f32_15 |
637 | }; | |
ccc9c027 L |
638 | /* nopl (%[re]ax) */ |
639 | static const char alt_3[] = | |
640 | {0x0f,0x1f,0x00}; | |
641 | /* nopl 0(%[re]ax) */ | |
642 | static const char alt_4[] = | |
643 | {0x0f,0x1f,0x40,0x00}; | |
644 | /* nopl 0(%[re]ax,%[re]ax,1) */ | |
645 | static const char alt_5[] = | |
646 | {0x0f,0x1f,0x44,0x00,0x00}; | |
647 | /* nopw 0(%[re]ax,%[re]ax,1) */ | |
648 | static const char alt_6[] = | |
649 | {0x66,0x0f,0x1f,0x44,0x00,0x00}; | |
650 | /* nopl 0L(%[re]ax) */ | |
651 | static const char alt_7[] = | |
652 | {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00}; | |
653 | /* nopl 0L(%[re]ax,%[re]ax,1) */ | |
654 | static const char alt_8[] = | |
655 | {0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
656 | /* nopw 0L(%[re]ax,%[re]ax,1) */ | |
657 | static const char alt_9[] = | |
658 | {0x66,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
659 | /* nopw %cs:0L(%[re]ax,%[re]ax,1) */ | |
660 | static const char alt_10[] = | |
661 | {0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
662 | /* data16 | |
663 | nopw %cs:0L(%[re]ax,%[re]ax,1) */ | |
664 | static const char alt_long_11[] = | |
665 | {0x66, | |
666 | 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
667 | /* data16 | |
668 | data16 | |
669 | nopw %cs:0L(%[re]ax,%[re]ax,1) */ | |
670 | static const char alt_long_12[] = | |
671 | {0x66, | |
672 | 0x66, | |
673 | 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
674 | /* data16 | |
675 | data16 | |
676 | data16 | |
677 | nopw %cs:0L(%[re]ax,%[re]ax,1) */ | |
678 | static const char alt_long_13[] = | |
679 | {0x66, | |
680 | 0x66, | |
681 | 0x66, | |
682 | 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
683 | /* data16 | |
684 | data16 | |
685 | data16 | |
686 | data16 | |
687 | nopw %cs:0L(%[re]ax,%[re]ax,1) */ | |
688 | static const char alt_long_14[] = | |
689 | {0x66, | |
690 | 0x66, | |
691 | 0x66, | |
692 | 0x66, | |
693 | 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
694 | /* data16 | |
695 | data16 | |
696 | data16 | |
697 | data16 | |
698 | data16 | |
699 | nopw %cs:0L(%[re]ax,%[re]ax,1) */ | |
700 | static const char alt_long_15[] = | |
701 | {0x66, | |
702 | 0x66, | |
703 | 0x66, | |
704 | 0x66, | |
705 | 0x66, | |
706 | 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
707 | /* nopl 0(%[re]ax,%[re]ax,1) | |
708 | nopw 0(%[re]ax,%[re]ax,1) */ | |
709 | static const char alt_short_11[] = | |
710 | {0x0f,0x1f,0x44,0x00,0x00, | |
711 | 0x66,0x0f,0x1f,0x44,0x00,0x00}; | |
712 | /* nopw 0(%[re]ax,%[re]ax,1) | |
713 | nopw 0(%[re]ax,%[re]ax,1) */ | |
714 | static const char alt_short_12[] = | |
715 | {0x66,0x0f,0x1f,0x44,0x00,0x00, | |
716 | 0x66,0x0f,0x1f,0x44,0x00,0x00}; | |
717 | /* nopw 0(%[re]ax,%[re]ax,1) | |
718 | nopl 0L(%[re]ax) */ | |
719 | static const char alt_short_13[] = | |
720 | {0x66,0x0f,0x1f,0x44,0x00,0x00, | |
721 | 0x0f,0x1f,0x80,0x00,0x00,0x00,0x00}; | |
722 | /* nopl 0L(%[re]ax) | |
723 | nopl 0L(%[re]ax) */ | |
724 | static const char alt_short_14[] = | |
725 | {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00, | |
726 | 0x0f,0x1f,0x80,0x00,0x00,0x00,0x00}; | |
727 | /* nopl 0L(%[re]ax) | |
728 | nopl 0L(%[re]ax,%[re]ax,1) */ | |
729 | static const char alt_short_15[] = | |
730 | {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00, | |
731 | 0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00}; | |
732 | static const char *const alt_short_patt[] = { | |
733 | f32_1, f32_2, alt_3, alt_4, alt_5, alt_6, alt_7, alt_8, | |
734 | alt_9, alt_10, alt_short_11, alt_short_12, alt_short_13, | |
735 | alt_short_14, alt_short_15 | |
736 | }; | |
737 | static const char *const alt_long_patt[] = { | |
738 | f32_1, f32_2, alt_3, alt_4, alt_5, alt_6, alt_7, alt_8, | |
739 | alt_9, alt_10, alt_long_11, alt_long_12, alt_long_13, | |
740 | alt_long_14, alt_long_15 | |
741 | }; | |
252b5132 | 742 | |
33fef721 JH |
743 | if (count <= 0 || count > 15) |
744 | return; | |
3e73aa7c | 745 | |
ccc9c027 L |
746 | /* We need to decide which NOP sequence to use for 32bit and |
747 | 64bit. When -mtune= is used: | |
4eed87de | 748 | |
ccc9c027 L |
749 | 1. For PROCESSOR_I486, PROCESSOR_PENTIUM and PROCESSOR_GENERIC32, |
750 | f32_patt will be used. | |
4eed87de AM |
751 | 2. For PROCESSOR_K8 and PROCESSOR_AMDFAM10 in 64bit, NOPs with |
752 | 0x66 prefix will be used. | |
ef05d495 | 753 | 3. For PROCESSOR_CORE2, alt_long_patt will be used. |
ccc9c027 | 754 | 4. For PROCESSOR_PENTIUMPRO, PROCESSOR_PENTIUM4, PROCESSOR_NOCONA, |
ef05d495 | 755 | PROCESSOR_CORE, PROCESSOR_CORE2, PROCESSOR_K6, PROCESSOR_ATHLON |
ccc9c027 L |
756 | and PROCESSOR_GENERIC64, alt_short_patt will be used. |
757 | ||
758 | When -mtune= isn't used, alt_short_patt will be used if | |
759 | cpu_arch_isa_flags has Cpu686. Otherwise, f32_patt will be used. | |
760 | ||
761 | When -march= or .arch is used, we can't use anything beyond | |
762 | cpu_arch_isa_flags. */ | |
763 | ||
764 | if (flag_code == CODE_16BIT) | |
765 | { | |
766 | memcpy (fragP->fr_literal + fragP->fr_fix, | |
767 | f16_patt[count - 1], count); | |
768 | if (count > 8) | |
769 | /* Adjust jump offset. */ | |
770 | fragP->fr_literal[fragP->fr_fix + 1] = count - 2; | |
771 | } | |
772 | else if (flag_code == CODE_64BIT && cpu_arch_tune == PROCESSOR_K8) | |
252b5132 | 773 | { |
33fef721 JH |
774 | int i; |
775 | int nnops = (count + 3) / 4; | |
776 | int len = count / nnops; | |
777 | int remains = count - nnops * len; | |
778 | int pos = 0; | |
779 | ||
ccc9c027 | 780 | /* The recommended way to pad 64bit code is to use NOPs preceded |
4eed87de | 781 | by maximally four 0x66 prefixes. Balance the size of nops. */ |
33fef721 | 782 | for (i = 0; i < remains; i++) |
252b5132 | 783 | { |
33fef721 JH |
784 | memset (fragP->fr_literal + fragP->fr_fix + pos, 0x66, len); |
785 | fragP->fr_literal[fragP->fr_fix + pos + len] = 0x90; | |
786 | pos += len + 1; | |
787 | } | |
788 | for (; i < nnops; i++) | |
789 | { | |
790 | memset (fragP->fr_literal + fragP->fr_fix + pos, 0x66, len - 1); | |
791 | fragP->fr_literal[fragP->fr_fix + pos + len - 1] = 0x90; | |
792 | pos += len; | |
252b5132 | 793 | } |
252b5132 | 794 | } |
33fef721 | 795 | else |
ccc9c027 L |
796 | { |
797 | const char *const *patt = NULL; | |
798 | ||
799 | if (cpu_arch_isa == PROCESSOR_UNKNOWN) | |
800 | { | |
801 | /* PROCESSOR_UNKNOWN means that all ISAs may be used. */ | |
802 | switch (cpu_arch_tune) | |
803 | { | |
804 | case PROCESSOR_UNKNOWN: | |
805 | /* We use cpu_arch_isa_flags to check if we SHOULD | |
806 | optimize for Cpu686. */ | |
807 | if ((cpu_arch_isa_flags & Cpu686) != 0) | |
808 | patt = alt_short_patt; | |
809 | else | |
810 | patt = f32_patt; | |
811 | break; | |
ef05d495 | 812 | case PROCESSOR_CORE2: |
ccc9c027 L |
813 | patt = alt_long_patt; |
814 | break; | |
815 | case PROCESSOR_PENTIUMPRO: | |
816 | case PROCESSOR_PENTIUM4: | |
817 | case PROCESSOR_NOCONA: | |
ef05d495 | 818 | case PROCESSOR_CORE: |
ccc9c027 L |
819 | case PROCESSOR_K6: |
820 | case PROCESSOR_ATHLON: | |
821 | case PROCESSOR_K8: | |
822 | case PROCESSOR_GENERIC64: | |
4eed87de | 823 | case PROCESSOR_AMDFAM10: |
ccc9c027 L |
824 | patt = alt_short_patt; |
825 | break; | |
826 | case PROCESSOR_I486: | |
827 | case PROCESSOR_PENTIUM: | |
828 | case PROCESSOR_GENERIC32: | |
829 | patt = f32_patt; | |
830 | break; | |
4eed87de | 831 | } |
ccc9c027 L |
832 | } |
833 | else | |
834 | { | |
835 | switch (cpu_arch_tune) | |
836 | { | |
837 | case PROCESSOR_UNKNOWN: | |
838 | /* When cpu_arch_isa is net, cpu_arch_tune shouldn't be | |
839 | PROCESSOR_UNKNOWN. */ | |
840 | abort (); | |
841 | break; | |
842 | ||
843 | case PROCESSOR_I486: | |
844 | case PROCESSOR_PENTIUM: | |
845 | case PROCESSOR_PENTIUMPRO: | |
846 | case PROCESSOR_PENTIUM4: | |
847 | case PROCESSOR_NOCONA: | |
ef05d495 | 848 | case PROCESSOR_CORE: |
ccc9c027 L |
849 | case PROCESSOR_K6: |
850 | case PROCESSOR_ATHLON: | |
851 | case PROCESSOR_K8: | |
4eed87de | 852 | case PROCESSOR_AMDFAM10: |
ccc9c027 L |
853 | case PROCESSOR_GENERIC32: |
854 | /* We use cpu_arch_isa_flags to check if we CAN optimize | |
855 | for Cpu686. */ | |
856 | if ((cpu_arch_isa_flags & Cpu686) != 0) | |
857 | patt = alt_short_patt; | |
858 | else | |
859 | patt = f32_patt; | |
860 | break; | |
ef05d495 | 861 | case PROCESSOR_CORE2: |
ccc9c027 L |
862 | if ((cpu_arch_isa_flags & Cpu686) != 0) |
863 | patt = alt_long_patt; | |
864 | else | |
865 | patt = f32_patt; | |
866 | break; | |
867 | case PROCESSOR_GENERIC64: | |
868 | patt = alt_short_patt; | |
869 | break; | |
4eed87de | 870 | } |
ccc9c027 L |
871 | } |
872 | ||
33fef721 | 873 | memcpy (fragP->fr_literal + fragP->fr_fix, |
ccc9c027 L |
874 | patt[count - 1], count); |
875 | } | |
33fef721 | 876 | fragP->fr_var = count; |
252b5132 RH |
877 | } |
878 | ||
252b5132 | 879 | static INLINE unsigned int |
e3bb37b5 | 880 | mode_from_disp_size (unsigned int t) |
252b5132 | 881 | { |
3e73aa7c | 882 | return (t & Disp8) ? 1 : (t & (Disp16 | Disp32 | Disp32S)) ? 2 : 0; |
252b5132 RH |
883 | } |
884 | ||
885 | static INLINE int | |
e3bb37b5 | 886 | fits_in_signed_byte (offsetT num) |
252b5132 RH |
887 | { |
888 | return (num >= -128) && (num <= 127); | |
47926f60 | 889 | } |
252b5132 RH |
890 | |
891 | static INLINE int | |
e3bb37b5 | 892 | fits_in_unsigned_byte (offsetT num) |
252b5132 RH |
893 | { |
894 | return (num & 0xff) == num; | |
47926f60 | 895 | } |
252b5132 RH |
896 | |
897 | static INLINE int | |
e3bb37b5 | 898 | fits_in_unsigned_word (offsetT num) |
252b5132 RH |
899 | { |
900 | return (num & 0xffff) == num; | |
47926f60 | 901 | } |
252b5132 RH |
902 | |
903 | static INLINE int | |
e3bb37b5 | 904 | fits_in_signed_word (offsetT num) |
252b5132 RH |
905 | { |
906 | return (-32768 <= num) && (num <= 32767); | |
47926f60 | 907 | } |
2a962e6d | 908 | |
3e73aa7c | 909 | static INLINE int |
e3bb37b5 | 910 | fits_in_signed_long (offsetT num ATTRIBUTE_UNUSED) |
3e73aa7c JH |
911 | { |
912 | #ifndef BFD64 | |
913 | return 1; | |
914 | #else | |
915 | return (!(((offsetT) -1 << 31) & num) | |
916 | || (((offsetT) -1 << 31) & num) == ((offsetT) -1 << 31)); | |
917 | #endif | |
918 | } /* fits_in_signed_long() */ | |
2a962e6d | 919 | |
3e73aa7c | 920 | static INLINE int |
e3bb37b5 | 921 | fits_in_unsigned_long (offsetT num ATTRIBUTE_UNUSED) |
3e73aa7c JH |
922 | { |
923 | #ifndef BFD64 | |
924 | return 1; | |
925 | #else | |
926 | return (num & (((offsetT) 2 << 31) - 1)) == num; | |
927 | #endif | |
928 | } /* fits_in_unsigned_long() */ | |
252b5132 | 929 | |
1509aa9a | 930 | static unsigned int |
e3bb37b5 | 931 | smallest_imm_type (offsetT num) |
252b5132 | 932 | { |
d32cad65 | 933 | if (cpu_arch_flags != (Cpu186 | Cpu286 | Cpu386 | Cpu486 | CpuNo64)) |
e413e4e9 AM |
934 | { |
935 | /* This code is disabled on the 486 because all the Imm1 forms | |
936 | in the opcode table are slower on the i486. They're the | |
937 | versions with the implicitly specified single-position | |
938 | displacement, which has another syntax if you really want to | |
939 | use that form. */ | |
940 | if (num == 1) | |
3e73aa7c | 941 | return Imm1 | Imm8 | Imm8S | Imm16 | Imm32 | Imm32S | Imm64; |
e413e4e9 | 942 | } |
252b5132 | 943 | return (fits_in_signed_byte (num) |
3e73aa7c | 944 | ? (Imm8S | Imm8 | Imm16 | Imm32 | Imm32S | Imm64) |
252b5132 | 945 | : fits_in_unsigned_byte (num) |
3e73aa7c | 946 | ? (Imm8 | Imm16 | Imm32 | Imm32S | Imm64) |
252b5132 | 947 | : (fits_in_signed_word (num) || fits_in_unsigned_word (num)) |
3e73aa7c JH |
948 | ? (Imm16 | Imm32 | Imm32S | Imm64) |
949 | : fits_in_signed_long (num) | |
950 | ? (Imm32 | Imm32S | Imm64) | |
951 | : fits_in_unsigned_long (num) | |
952 | ? (Imm32 | Imm64) | |
953 | : Imm64); | |
47926f60 | 954 | } |
252b5132 | 955 | |
847f7ad4 | 956 | static offsetT |
e3bb37b5 | 957 | offset_in_range (offsetT val, int size) |
847f7ad4 | 958 | { |
508866be | 959 | addressT mask; |
ba2adb93 | 960 | |
847f7ad4 AM |
961 | switch (size) |
962 | { | |
508866be L |
963 | case 1: mask = ((addressT) 1 << 8) - 1; break; |
964 | case 2: mask = ((addressT) 1 << 16) - 1; break; | |
3b0ec529 | 965 | case 4: mask = ((addressT) 2 << 31) - 1; break; |
3e73aa7c JH |
966 | #ifdef BFD64 |
967 | case 8: mask = ((addressT) 2 << 63) - 1; break; | |
968 | #endif | |
47926f60 | 969 | default: abort (); |
847f7ad4 AM |
970 | } |
971 | ||
ba2adb93 | 972 | /* If BFD64, sign extend val. */ |
3e73aa7c JH |
973 | if (!use_rela_relocations) |
974 | if ((val & ~(((addressT) 2 << 31) - 1)) == 0) | |
975 | val = (val ^ ((addressT) 1 << 31)) - ((addressT) 1 << 31); | |
ba2adb93 | 976 | |
47926f60 | 977 | if ((val & ~mask) != 0 && (val & ~mask) != ~mask) |
847f7ad4 AM |
978 | { |
979 | char buf1[40], buf2[40]; | |
980 | ||
981 | sprint_value (buf1, val); | |
982 | sprint_value (buf2, val & mask); | |
983 | as_warn (_("%s shortened to %s"), buf1, buf2); | |
984 | } | |
985 | return val & mask; | |
986 | } | |
987 | ||
252b5132 RH |
988 | /* Returns 0 if attempting to add a prefix where one from the same |
989 | class already exists, 1 if non rep/repne added, 2 if rep/repne | |
990 | added. */ | |
991 | static int | |
e3bb37b5 | 992 | add_prefix (unsigned int prefix) |
252b5132 RH |
993 | { |
994 | int ret = 1; | |
b1905489 | 995 | unsigned int q; |
252b5132 | 996 | |
29b0f896 AM |
997 | if (prefix >= REX_OPCODE && prefix < REX_OPCODE + 16 |
998 | && flag_code == CODE_64BIT) | |
b1905489 | 999 | { |
161a04f6 L |
1000 | if ((i.prefix[REX_PREFIX] & prefix & REX_W) |
1001 | || ((i.prefix[REX_PREFIX] & (REX_R | REX_X | REX_B)) | |
1002 | && (prefix & (REX_R | REX_X | REX_B)))) | |
b1905489 JB |
1003 | ret = 0; |
1004 | q = REX_PREFIX; | |
1005 | } | |
3e73aa7c | 1006 | else |
b1905489 JB |
1007 | { |
1008 | switch (prefix) | |
1009 | { | |
1010 | default: | |
1011 | abort (); | |
1012 | ||
1013 | case CS_PREFIX_OPCODE: | |
1014 | case DS_PREFIX_OPCODE: | |
1015 | case ES_PREFIX_OPCODE: | |
1016 | case FS_PREFIX_OPCODE: | |
1017 | case GS_PREFIX_OPCODE: | |
1018 | case SS_PREFIX_OPCODE: | |
1019 | q = SEG_PREFIX; | |
1020 | break; | |
1021 | ||
1022 | case REPNE_PREFIX_OPCODE: | |
1023 | case REPE_PREFIX_OPCODE: | |
1024 | ret = 2; | |
1025 | /* fall thru */ | |
1026 | case LOCK_PREFIX_OPCODE: | |
1027 | q = LOCKREP_PREFIX; | |
1028 | break; | |
1029 | ||
1030 | case FWAIT_OPCODE: | |
1031 | q = WAIT_PREFIX; | |
1032 | break; | |
1033 | ||
1034 | case ADDR_PREFIX_OPCODE: | |
1035 | q = ADDR_PREFIX; | |
1036 | break; | |
1037 | ||
1038 | case DATA_PREFIX_OPCODE: | |
1039 | q = DATA_PREFIX; | |
1040 | break; | |
1041 | } | |
1042 | if (i.prefix[q] != 0) | |
1043 | ret = 0; | |
1044 | } | |
252b5132 | 1045 | |
b1905489 | 1046 | if (ret) |
252b5132 | 1047 | { |
b1905489 JB |
1048 | if (!i.prefix[q]) |
1049 | ++i.prefixes; | |
1050 | i.prefix[q] |= prefix; | |
252b5132 | 1051 | } |
b1905489 JB |
1052 | else |
1053 | as_bad (_("same type of prefix used twice")); | |
252b5132 | 1054 | |
252b5132 RH |
1055 | return ret; |
1056 | } | |
1057 | ||
1058 | static void | |
e3bb37b5 | 1059 | set_code_flag (int value) |
eecb386c | 1060 | { |
3e73aa7c JH |
1061 | flag_code = value; |
1062 | cpu_arch_flags &= ~(Cpu64 | CpuNo64); | |
1063 | cpu_arch_flags |= (flag_code == CODE_64BIT ? Cpu64 : CpuNo64); | |
1064 | if (value == CODE_64BIT && !(cpu_arch_flags & CpuSledgehammer)) | |
1065 | { | |
1066 | as_bad (_("64bit mode not supported on this CPU.")); | |
1067 | } | |
1068 | if (value == CODE_32BIT && !(cpu_arch_flags & Cpu386)) | |
1069 | { | |
1070 | as_bad (_("32bit mode not supported on this CPU.")); | |
1071 | } | |
eecb386c AM |
1072 | stackop_size = '\0'; |
1073 | } | |
1074 | ||
1075 | static void | |
e3bb37b5 | 1076 | set_16bit_gcc_code_flag (int new_code_flag) |
252b5132 | 1077 | { |
3e73aa7c JH |
1078 | flag_code = new_code_flag; |
1079 | cpu_arch_flags &= ~(Cpu64 | CpuNo64); | |
1080 | cpu_arch_flags |= (flag_code == CODE_64BIT ? Cpu64 : CpuNo64); | |
9306ca4a | 1081 | stackop_size = LONG_MNEM_SUFFIX; |
252b5132 RH |
1082 | } |
1083 | ||
1084 | static void | |
e3bb37b5 | 1085 | set_intel_syntax (int syntax_flag) |
252b5132 RH |
1086 | { |
1087 | /* Find out if register prefixing is specified. */ | |
1088 | int ask_naked_reg = 0; | |
1089 | ||
1090 | SKIP_WHITESPACE (); | |
29b0f896 | 1091 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1092 | { |
1093 | char *string = input_line_pointer; | |
1094 | int e = get_symbol_end (); | |
1095 | ||
47926f60 | 1096 | if (strcmp (string, "prefix") == 0) |
252b5132 | 1097 | ask_naked_reg = 1; |
47926f60 | 1098 | else if (strcmp (string, "noprefix") == 0) |
252b5132 RH |
1099 | ask_naked_reg = -1; |
1100 | else | |
d0b47220 | 1101 | as_bad (_("bad argument to syntax directive.")); |
252b5132 RH |
1102 | *input_line_pointer = e; |
1103 | } | |
1104 | demand_empty_rest_of_line (); | |
c3332e24 | 1105 | |
252b5132 RH |
1106 | intel_syntax = syntax_flag; |
1107 | ||
1108 | if (ask_naked_reg == 0) | |
f86103b7 AM |
1109 | allow_naked_reg = (intel_syntax |
1110 | && (bfd_get_symbol_leading_char (stdoutput) != '\0')); | |
252b5132 RH |
1111 | else |
1112 | allow_naked_reg = (ask_naked_reg < 0); | |
9306ca4a | 1113 | |
e4a3b5a4 | 1114 | identifier_chars['%'] = intel_syntax && allow_naked_reg ? '%' : 0; |
9306ca4a | 1115 | identifier_chars['$'] = intel_syntax ? '$' : 0; |
e4a3b5a4 | 1116 | register_prefix = allow_naked_reg ? "" : "%"; |
252b5132 RH |
1117 | } |
1118 | ||
e413e4e9 | 1119 | static void |
e3bb37b5 | 1120 | set_cpu_arch (int dummy ATTRIBUTE_UNUSED) |
e413e4e9 | 1121 | { |
47926f60 | 1122 | SKIP_WHITESPACE (); |
e413e4e9 | 1123 | |
29b0f896 | 1124 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
e413e4e9 AM |
1125 | { |
1126 | char *string = input_line_pointer; | |
1127 | int e = get_symbol_end (); | |
9103f4f4 | 1128 | unsigned int i; |
e413e4e9 | 1129 | |
9103f4f4 | 1130 | for (i = 0; i < ARRAY_SIZE (cpu_arch); i++) |
e413e4e9 AM |
1131 | { |
1132 | if (strcmp (string, cpu_arch[i].name) == 0) | |
1133 | { | |
5c6af06e JB |
1134 | if (*string != '.') |
1135 | { | |
1136 | cpu_arch_name = cpu_arch[i].name; | |
1137 | cpu_sub_arch_name = NULL; | |
1138 | cpu_arch_flags = (cpu_arch[i].flags | |
4eed87de AM |
1139 | | (flag_code == CODE_64BIT |
1140 | ? Cpu64 : CpuNo64)); | |
ccc9c027 | 1141 | cpu_arch_isa = cpu_arch[i].type; |
9103f4f4 | 1142 | cpu_arch_isa_flags = cpu_arch[i].flags; |
ccc9c027 L |
1143 | if (!cpu_arch_tune_set) |
1144 | { | |
1145 | cpu_arch_tune = cpu_arch_isa; | |
1146 | cpu_arch_tune_flags = cpu_arch_isa_flags; | |
1147 | } | |
5c6af06e JB |
1148 | break; |
1149 | } | |
1150 | if ((cpu_arch_flags | cpu_arch[i].flags) != cpu_arch_flags) | |
1151 | { | |
1152 | cpu_sub_arch_name = cpu_arch[i].name; | |
1153 | cpu_arch_flags |= cpu_arch[i].flags; | |
1154 | } | |
1155 | *input_line_pointer = e; | |
1156 | demand_empty_rest_of_line (); | |
1157 | return; | |
e413e4e9 AM |
1158 | } |
1159 | } | |
9103f4f4 | 1160 | if (i >= ARRAY_SIZE (cpu_arch)) |
e413e4e9 AM |
1161 | as_bad (_("no such architecture: `%s'"), string); |
1162 | ||
1163 | *input_line_pointer = e; | |
1164 | } | |
1165 | else | |
1166 | as_bad (_("missing cpu architecture")); | |
1167 | ||
fddf5b5b AM |
1168 | no_cond_jump_promotion = 0; |
1169 | if (*input_line_pointer == ',' | |
29b0f896 | 1170 | && !is_end_of_line[(unsigned char) input_line_pointer[1]]) |
fddf5b5b AM |
1171 | { |
1172 | char *string = ++input_line_pointer; | |
1173 | int e = get_symbol_end (); | |
1174 | ||
1175 | if (strcmp (string, "nojumps") == 0) | |
1176 | no_cond_jump_promotion = 1; | |
1177 | else if (strcmp (string, "jumps") == 0) | |
1178 | ; | |
1179 | else | |
1180 | as_bad (_("no such architecture modifier: `%s'"), string); | |
1181 | ||
1182 | *input_line_pointer = e; | |
1183 | } | |
1184 | ||
e413e4e9 AM |
1185 | demand_empty_rest_of_line (); |
1186 | } | |
1187 | ||
b9d79e03 JH |
1188 | unsigned long |
1189 | i386_mach () | |
1190 | { | |
1191 | if (!strcmp (default_arch, "x86_64")) | |
1192 | return bfd_mach_x86_64; | |
1193 | else if (!strcmp (default_arch, "i386")) | |
1194 | return bfd_mach_i386_i386; | |
1195 | else | |
1196 | as_fatal (_("Unknown architecture")); | |
1197 | } | |
b9d79e03 | 1198 | \f |
252b5132 RH |
1199 | void |
1200 | md_begin () | |
1201 | { | |
1202 | const char *hash_err; | |
1203 | ||
47926f60 | 1204 | /* Initialize op_hash hash table. */ |
252b5132 RH |
1205 | op_hash = hash_new (); |
1206 | ||
1207 | { | |
29b0f896 AM |
1208 | const template *optab; |
1209 | templates *core_optab; | |
252b5132 | 1210 | |
47926f60 KH |
1211 | /* Setup for loop. */ |
1212 | optab = i386_optab; | |
252b5132 RH |
1213 | core_optab = (templates *) xmalloc (sizeof (templates)); |
1214 | core_optab->start = optab; | |
1215 | ||
1216 | while (1) | |
1217 | { | |
1218 | ++optab; | |
1219 | if (optab->name == NULL | |
1220 | || strcmp (optab->name, (optab - 1)->name) != 0) | |
1221 | { | |
1222 | /* different name --> ship out current template list; | |
47926f60 | 1223 | add to hash table; & begin anew. */ |
252b5132 RH |
1224 | core_optab->end = optab; |
1225 | hash_err = hash_insert (op_hash, | |
1226 | (optab - 1)->name, | |
1227 | (PTR) core_optab); | |
1228 | if (hash_err) | |
1229 | { | |
252b5132 RH |
1230 | as_fatal (_("Internal Error: Can't hash %s: %s"), |
1231 | (optab - 1)->name, | |
1232 | hash_err); | |
1233 | } | |
1234 | if (optab->name == NULL) | |
1235 | break; | |
1236 | core_optab = (templates *) xmalloc (sizeof (templates)); | |
1237 | core_optab->start = optab; | |
1238 | } | |
1239 | } | |
1240 | } | |
1241 | ||
47926f60 | 1242 | /* Initialize reg_hash hash table. */ |
252b5132 RH |
1243 | reg_hash = hash_new (); |
1244 | { | |
29b0f896 | 1245 | const reg_entry *regtab; |
c3fe08fa | 1246 | unsigned int regtab_size = i386_regtab_size; |
252b5132 | 1247 | |
c3fe08fa | 1248 | for (regtab = i386_regtab; regtab_size--; regtab++) |
252b5132 RH |
1249 | { |
1250 | hash_err = hash_insert (reg_hash, regtab->reg_name, (PTR) regtab); | |
1251 | if (hash_err) | |
3e73aa7c JH |
1252 | as_fatal (_("Internal Error: Can't hash %s: %s"), |
1253 | regtab->reg_name, | |
1254 | hash_err); | |
252b5132 RH |
1255 | } |
1256 | } | |
1257 | ||
47926f60 | 1258 | /* Fill in lexical tables: mnemonic_chars, operand_chars. */ |
252b5132 | 1259 | { |
29b0f896 AM |
1260 | int c; |
1261 | char *p; | |
252b5132 RH |
1262 | |
1263 | for (c = 0; c < 256; c++) | |
1264 | { | |
3882b010 | 1265 | if (ISDIGIT (c)) |
252b5132 RH |
1266 | { |
1267 | digit_chars[c] = c; | |
1268 | mnemonic_chars[c] = c; | |
1269 | register_chars[c] = c; | |
1270 | operand_chars[c] = c; | |
1271 | } | |
3882b010 | 1272 | else if (ISLOWER (c)) |
252b5132 RH |
1273 | { |
1274 | mnemonic_chars[c] = c; | |
1275 | register_chars[c] = c; | |
1276 | operand_chars[c] = c; | |
1277 | } | |
3882b010 | 1278 | else if (ISUPPER (c)) |
252b5132 | 1279 | { |
3882b010 | 1280 | mnemonic_chars[c] = TOLOWER (c); |
252b5132 RH |
1281 | register_chars[c] = mnemonic_chars[c]; |
1282 | operand_chars[c] = c; | |
1283 | } | |
1284 | ||
3882b010 | 1285 | if (ISALPHA (c) || ISDIGIT (c)) |
252b5132 RH |
1286 | identifier_chars[c] = c; |
1287 | else if (c >= 128) | |
1288 | { | |
1289 | identifier_chars[c] = c; | |
1290 | operand_chars[c] = c; | |
1291 | } | |
1292 | } | |
1293 | ||
1294 | #ifdef LEX_AT | |
1295 | identifier_chars['@'] = '@'; | |
32137342 NC |
1296 | #endif |
1297 | #ifdef LEX_QM | |
1298 | identifier_chars['?'] = '?'; | |
1299 | operand_chars['?'] = '?'; | |
252b5132 | 1300 | #endif |
252b5132 | 1301 | digit_chars['-'] = '-'; |
791fe849 | 1302 | mnemonic_chars['-'] = '-'; |
0003779b | 1303 | mnemonic_chars['.'] = '.'; |
252b5132 RH |
1304 | identifier_chars['_'] = '_'; |
1305 | identifier_chars['.'] = '.'; | |
1306 | ||
1307 | for (p = operand_special_chars; *p != '\0'; p++) | |
1308 | operand_chars[(unsigned char) *p] = *p; | |
1309 | } | |
1310 | ||
1311 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
718ddfc0 | 1312 | if (IS_ELF) |
252b5132 RH |
1313 | { |
1314 | record_alignment (text_section, 2); | |
1315 | record_alignment (data_section, 2); | |
1316 | record_alignment (bss_section, 2); | |
1317 | } | |
1318 | #endif | |
a4447b93 RH |
1319 | |
1320 | if (flag_code == CODE_64BIT) | |
1321 | { | |
1322 | x86_dwarf2_return_column = 16; | |
1323 | x86_cie_data_alignment = -8; | |
1324 | } | |
1325 | else | |
1326 | { | |
1327 | x86_dwarf2_return_column = 8; | |
1328 | x86_cie_data_alignment = -4; | |
1329 | } | |
252b5132 RH |
1330 | } |
1331 | ||
1332 | void | |
e3bb37b5 | 1333 | i386_print_statistics (FILE *file) |
252b5132 RH |
1334 | { |
1335 | hash_print_statistics (file, "i386 opcode", op_hash); | |
1336 | hash_print_statistics (file, "i386 register", reg_hash); | |
1337 | } | |
1338 | \f | |
252b5132 RH |
1339 | #ifdef DEBUG386 |
1340 | ||
ce8a8b2f | 1341 | /* Debugging routines for md_assemble. */ |
e3bb37b5 L |
1342 | static void pte (template *); |
1343 | static void pt (unsigned int); | |
1344 | static void pe (expressionS *); | |
1345 | static void ps (symbolS *); | |
252b5132 RH |
1346 | |
1347 | static void | |
e3bb37b5 | 1348 | pi (char *line, i386_insn *x) |
252b5132 | 1349 | { |
09f131f2 | 1350 | unsigned int i; |
252b5132 RH |
1351 | |
1352 | fprintf (stdout, "%s: template ", line); | |
1353 | pte (&x->tm); | |
09f131f2 JH |
1354 | fprintf (stdout, " address: base %s index %s scale %x\n", |
1355 | x->base_reg ? x->base_reg->reg_name : "none", | |
1356 | x->index_reg ? x->index_reg->reg_name : "none", | |
1357 | x->log2_scale_factor); | |
1358 | fprintf (stdout, " modrm: mode %x reg %x reg/mem %x\n", | |
252b5132 | 1359 | x->rm.mode, x->rm.reg, x->rm.regmem); |
09f131f2 JH |
1360 | fprintf (stdout, " sib: base %x index %x scale %x\n", |
1361 | x->sib.base, x->sib.index, x->sib.scale); | |
1362 | fprintf (stdout, " rex: 64bit %x extX %x extY %x extZ %x\n", | |
161a04f6 L |
1363 | (x->rex & REX_W) != 0, |
1364 | (x->rex & REX_R) != 0, | |
1365 | (x->rex & REX_X) != 0, | |
1366 | (x->rex & REX_B) != 0); | |
252b5132 RH |
1367 | for (i = 0; i < x->operands; i++) |
1368 | { | |
1369 | fprintf (stdout, " #%d: ", i + 1); | |
1370 | pt (x->types[i]); | |
1371 | fprintf (stdout, "\n"); | |
1372 | if (x->types[i] | |
3f4438ab | 1373 | & (Reg | SReg2 | SReg3 | Control | Debug | Test | RegMMX | RegXMM)) |
520dc8e8 | 1374 | fprintf (stdout, "%s\n", x->op[i].regs->reg_name); |
252b5132 | 1375 | if (x->types[i] & Imm) |
520dc8e8 | 1376 | pe (x->op[i].imms); |
252b5132 | 1377 | if (x->types[i] & Disp) |
520dc8e8 | 1378 | pe (x->op[i].disps); |
252b5132 RH |
1379 | } |
1380 | } | |
1381 | ||
1382 | static void | |
e3bb37b5 | 1383 | pte (template *t) |
252b5132 | 1384 | { |
09f131f2 | 1385 | unsigned int i; |
252b5132 | 1386 | fprintf (stdout, " %d operands ", t->operands); |
47926f60 | 1387 | fprintf (stdout, "opcode %x ", t->base_opcode); |
252b5132 RH |
1388 | if (t->extension_opcode != None) |
1389 | fprintf (stdout, "ext %x ", t->extension_opcode); | |
1390 | if (t->opcode_modifier & D) | |
1391 | fprintf (stdout, "D"); | |
1392 | if (t->opcode_modifier & W) | |
1393 | fprintf (stdout, "W"); | |
1394 | fprintf (stdout, "\n"); | |
1395 | for (i = 0; i < t->operands; i++) | |
1396 | { | |
1397 | fprintf (stdout, " #%d type ", i + 1); | |
1398 | pt (t->operand_types[i]); | |
1399 | fprintf (stdout, "\n"); | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | static void | |
e3bb37b5 | 1404 | pe (expressionS *e) |
252b5132 | 1405 | { |
24eab124 | 1406 | fprintf (stdout, " operation %d\n", e->X_op); |
b77ad1d4 AM |
1407 | fprintf (stdout, " add_number %ld (%lx)\n", |
1408 | (long) e->X_add_number, (long) e->X_add_number); | |
252b5132 RH |
1409 | if (e->X_add_symbol) |
1410 | { | |
1411 | fprintf (stdout, " add_symbol "); | |
1412 | ps (e->X_add_symbol); | |
1413 | fprintf (stdout, "\n"); | |
1414 | } | |
1415 | if (e->X_op_symbol) | |
1416 | { | |
1417 | fprintf (stdout, " op_symbol "); | |
1418 | ps (e->X_op_symbol); | |
1419 | fprintf (stdout, "\n"); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | static void | |
e3bb37b5 | 1424 | ps (symbolS *s) |
252b5132 RH |
1425 | { |
1426 | fprintf (stdout, "%s type %s%s", | |
1427 | S_GET_NAME (s), | |
1428 | S_IS_EXTERNAL (s) ? "EXTERNAL " : "", | |
1429 | segment_name (S_GET_SEGMENT (s))); | |
1430 | } | |
1431 | ||
7b81dfbb | 1432 | static struct type_name |
252b5132 RH |
1433 | { |
1434 | unsigned int mask; | |
1435 | char *tname; | |
1436 | } | |
7b81dfbb | 1437 | const type_names[] = |
252b5132 RH |
1438 | { |
1439 | { Reg8, "r8" }, | |
1440 | { Reg16, "r16" }, | |
1441 | { Reg32, "r32" }, | |
09f131f2 | 1442 | { Reg64, "r64" }, |
252b5132 RH |
1443 | { Imm8, "i8" }, |
1444 | { Imm8S, "i8s" }, | |
1445 | { Imm16, "i16" }, | |
1446 | { Imm32, "i32" }, | |
09f131f2 JH |
1447 | { Imm32S, "i32s" }, |
1448 | { Imm64, "i64" }, | |
252b5132 RH |
1449 | { Imm1, "i1" }, |
1450 | { BaseIndex, "BaseIndex" }, | |
1451 | { Disp8, "d8" }, | |
1452 | { Disp16, "d16" }, | |
1453 | { Disp32, "d32" }, | |
09f131f2 JH |
1454 | { Disp32S, "d32s" }, |
1455 | { Disp64, "d64" }, | |
252b5132 RH |
1456 | { InOutPortReg, "InOutPortReg" }, |
1457 | { ShiftCount, "ShiftCount" }, | |
1458 | { Control, "control reg" }, | |
1459 | { Test, "test reg" }, | |
1460 | { Debug, "debug reg" }, | |
1461 | { FloatReg, "FReg" }, | |
1462 | { FloatAcc, "FAcc" }, | |
1463 | { SReg2, "SReg2" }, | |
1464 | { SReg3, "SReg3" }, | |
1465 | { Acc, "Acc" }, | |
1466 | { JumpAbsolute, "Jump Absolute" }, | |
1467 | { RegMMX, "rMMX" }, | |
3f4438ab | 1468 | { RegXMM, "rXMM" }, |
252b5132 RH |
1469 | { EsSeg, "es" }, |
1470 | { 0, "" } | |
1471 | }; | |
1472 | ||
1473 | static void | |
1474 | pt (t) | |
1475 | unsigned int t; | |
1476 | { | |
29b0f896 | 1477 | const struct type_name *ty; |
252b5132 | 1478 | |
09f131f2 JH |
1479 | for (ty = type_names; ty->mask; ty++) |
1480 | if (t & ty->mask) | |
1481 | fprintf (stdout, "%s, ", ty->tname); | |
252b5132 RH |
1482 | fflush (stdout); |
1483 | } | |
1484 | ||
1485 | #endif /* DEBUG386 */ | |
1486 | \f | |
252b5132 | 1487 | static bfd_reloc_code_real_type |
3956db08 | 1488 | reloc (unsigned int size, |
64e74474 AM |
1489 | int pcrel, |
1490 | int sign, | |
1491 | bfd_reloc_code_real_type other) | |
252b5132 | 1492 | { |
47926f60 | 1493 | if (other != NO_RELOC) |
3956db08 JB |
1494 | { |
1495 | reloc_howto_type *reloc; | |
1496 | ||
1497 | if (size == 8) | |
1498 | switch (other) | |
1499 | { | |
64e74474 AM |
1500 | case BFD_RELOC_X86_64_GOT32: |
1501 | return BFD_RELOC_X86_64_GOT64; | |
1502 | break; | |
1503 | case BFD_RELOC_X86_64_PLTOFF64: | |
1504 | return BFD_RELOC_X86_64_PLTOFF64; | |
1505 | break; | |
1506 | case BFD_RELOC_X86_64_GOTPC32: | |
1507 | other = BFD_RELOC_X86_64_GOTPC64; | |
1508 | break; | |
1509 | case BFD_RELOC_X86_64_GOTPCREL: | |
1510 | other = BFD_RELOC_X86_64_GOTPCREL64; | |
1511 | break; | |
1512 | case BFD_RELOC_X86_64_TPOFF32: | |
1513 | other = BFD_RELOC_X86_64_TPOFF64; | |
1514 | break; | |
1515 | case BFD_RELOC_X86_64_DTPOFF32: | |
1516 | other = BFD_RELOC_X86_64_DTPOFF64; | |
1517 | break; | |
1518 | default: | |
1519 | break; | |
3956db08 | 1520 | } |
e05278af JB |
1521 | |
1522 | /* Sign-checking 4-byte relocations in 16-/32-bit code is pointless. */ | |
1523 | if (size == 4 && flag_code != CODE_64BIT) | |
1524 | sign = -1; | |
1525 | ||
3956db08 JB |
1526 | reloc = bfd_reloc_type_lookup (stdoutput, other); |
1527 | if (!reloc) | |
1528 | as_bad (_("unknown relocation (%u)"), other); | |
1529 | else if (size != bfd_get_reloc_size (reloc)) | |
1530 | as_bad (_("%u-byte relocation cannot be applied to %u-byte field"), | |
1531 | bfd_get_reloc_size (reloc), | |
1532 | size); | |
1533 | else if (pcrel && !reloc->pc_relative) | |
1534 | as_bad (_("non-pc-relative relocation for pc-relative field")); | |
1535 | else if ((reloc->complain_on_overflow == complain_overflow_signed | |
1536 | && !sign) | |
1537 | || (reloc->complain_on_overflow == complain_overflow_unsigned | |
64e74474 | 1538 | && sign > 0)) |
3956db08 JB |
1539 | as_bad (_("relocated field and relocation type differ in signedness")); |
1540 | else | |
1541 | return other; | |
1542 | return NO_RELOC; | |
1543 | } | |
252b5132 RH |
1544 | |
1545 | if (pcrel) | |
1546 | { | |
3e73aa7c | 1547 | if (!sign) |
3956db08 | 1548 | as_bad (_("there are no unsigned pc-relative relocations")); |
252b5132 RH |
1549 | switch (size) |
1550 | { | |
1551 | case 1: return BFD_RELOC_8_PCREL; | |
1552 | case 2: return BFD_RELOC_16_PCREL; | |
1553 | case 4: return BFD_RELOC_32_PCREL; | |
d6ab8113 | 1554 | case 8: return BFD_RELOC_64_PCREL; |
252b5132 | 1555 | } |
3956db08 | 1556 | as_bad (_("cannot do %u byte pc-relative relocation"), size); |
252b5132 RH |
1557 | } |
1558 | else | |
1559 | { | |
3956db08 | 1560 | if (sign > 0) |
e5cb08ac | 1561 | switch (size) |
3e73aa7c JH |
1562 | { |
1563 | case 4: return BFD_RELOC_X86_64_32S; | |
1564 | } | |
1565 | else | |
1566 | switch (size) | |
1567 | { | |
1568 | case 1: return BFD_RELOC_8; | |
1569 | case 2: return BFD_RELOC_16; | |
1570 | case 4: return BFD_RELOC_32; | |
1571 | case 8: return BFD_RELOC_64; | |
1572 | } | |
3956db08 JB |
1573 | as_bad (_("cannot do %s %u byte relocation"), |
1574 | sign > 0 ? "signed" : "unsigned", size); | |
252b5132 RH |
1575 | } |
1576 | ||
bfb32b52 | 1577 | abort (); |
252b5132 RH |
1578 | return BFD_RELOC_NONE; |
1579 | } | |
1580 | ||
47926f60 KH |
1581 | /* Here we decide which fixups can be adjusted to make them relative to |
1582 | the beginning of the section instead of the symbol. Basically we need | |
1583 | to make sure that the dynamic relocations are done correctly, so in | |
1584 | some cases we force the original symbol to be used. */ | |
1585 | ||
252b5132 | 1586 | int |
e3bb37b5 | 1587 | tc_i386_fix_adjustable (fixS *fixP ATTRIBUTE_UNUSED) |
252b5132 | 1588 | { |
6d249963 | 1589 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
718ddfc0 | 1590 | if (!IS_ELF) |
31312f95 AM |
1591 | return 1; |
1592 | ||
a161fe53 AM |
1593 | /* Don't adjust pc-relative references to merge sections in 64-bit |
1594 | mode. */ | |
1595 | if (use_rela_relocations | |
1596 | && (S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE) != 0 | |
1597 | && fixP->fx_pcrel) | |
252b5132 | 1598 | return 0; |
31312f95 | 1599 | |
8d01d9a9 AJ |
1600 | /* The x86_64 GOTPCREL are represented as 32bit PCrel relocations |
1601 | and changed later by validate_fix. */ | |
1602 | if (GOT_symbol && fixP->fx_subsy == GOT_symbol | |
1603 | && fixP->fx_r_type == BFD_RELOC_32_PCREL) | |
1604 | return 0; | |
1605 | ||
ce8a8b2f | 1606 | /* adjust_reloc_syms doesn't know about the GOT. */ |
252b5132 RH |
1607 | if (fixP->fx_r_type == BFD_RELOC_386_GOTOFF |
1608 | || fixP->fx_r_type == BFD_RELOC_386_PLT32 | |
1609 | || fixP->fx_r_type == BFD_RELOC_386_GOT32 | |
13ae64f3 JJ |
1610 | || fixP->fx_r_type == BFD_RELOC_386_TLS_GD |
1611 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LDM | |
1612 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LDO_32 | |
1613 | || fixP->fx_r_type == BFD_RELOC_386_TLS_IE_32 | |
37e55690 JJ |
1614 | || fixP->fx_r_type == BFD_RELOC_386_TLS_IE |
1615 | || fixP->fx_r_type == BFD_RELOC_386_TLS_GOTIE | |
13ae64f3 JJ |
1616 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LE_32 |
1617 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LE | |
67a4f2b7 AO |
1618 | || fixP->fx_r_type == BFD_RELOC_386_TLS_GOTDESC |
1619 | || fixP->fx_r_type == BFD_RELOC_386_TLS_DESC_CALL | |
3e73aa7c JH |
1620 | || fixP->fx_r_type == BFD_RELOC_X86_64_PLT32 |
1621 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOT32 | |
80b3ee89 | 1622 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOTPCREL |
bffbf940 JJ |
1623 | || fixP->fx_r_type == BFD_RELOC_X86_64_TLSGD |
1624 | || fixP->fx_r_type == BFD_RELOC_X86_64_TLSLD | |
1625 | || fixP->fx_r_type == BFD_RELOC_X86_64_DTPOFF32 | |
d6ab8113 | 1626 | || fixP->fx_r_type == BFD_RELOC_X86_64_DTPOFF64 |
bffbf940 JJ |
1627 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOTTPOFF |
1628 | || fixP->fx_r_type == BFD_RELOC_X86_64_TPOFF32 | |
d6ab8113 JB |
1629 | || fixP->fx_r_type == BFD_RELOC_X86_64_TPOFF64 |
1630 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOTOFF64 | |
67a4f2b7 AO |
1631 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOTPC32_TLSDESC |
1632 | || fixP->fx_r_type == BFD_RELOC_X86_64_TLSDESC_CALL | |
252b5132 RH |
1633 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
1634 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
1635 | return 0; | |
31312f95 | 1636 | #endif |
252b5132 RH |
1637 | return 1; |
1638 | } | |
252b5132 | 1639 | |
b4cac588 | 1640 | static int |
e3bb37b5 | 1641 | intel_float_operand (const char *mnemonic) |
252b5132 | 1642 | { |
9306ca4a JB |
1643 | /* Note that the value returned is meaningful only for opcodes with (memory) |
1644 | operands, hence the code here is free to improperly handle opcodes that | |
1645 | have no operands (for better performance and smaller code). */ | |
1646 | ||
1647 | if (mnemonic[0] != 'f') | |
1648 | return 0; /* non-math */ | |
1649 | ||
1650 | switch (mnemonic[1]) | |
1651 | { | |
1652 | /* fclex, fdecstp, fdisi, femms, feni, fincstp, finit, fsetpm, and | |
1653 | the fs segment override prefix not currently handled because no | |
1654 | call path can make opcodes without operands get here */ | |
1655 | case 'i': | |
1656 | return 2 /* integer op */; | |
1657 | case 'l': | |
1658 | if (mnemonic[2] == 'd' && (mnemonic[3] == 'c' || mnemonic[3] == 'e')) | |
1659 | return 3; /* fldcw/fldenv */ | |
1660 | break; | |
1661 | case 'n': | |
1662 | if (mnemonic[2] != 'o' /* fnop */) | |
1663 | return 3; /* non-waiting control op */ | |
1664 | break; | |
1665 | case 'r': | |
1666 | if (mnemonic[2] == 's') | |
1667 | return 3; /* frstor/frstpm */ | |
1668 | break; | |
1669 | case 's': | |
1670 | if (mnemonic[2] == 'a') | |
1671 | return 3; /* fsave */ | |
1672 | if (mnemonic[2] == 't') | |
1673 | { | |
1674 | switch (mnemonic[3]) | |
1675 | { | |
1676 | case 'c': /* fstcw */ | |
1677 | case 'd': /* fstdw */ | |
1678 | case 'e': /* fstenv */ | |
1679 | case 's': /* fsts[gw] */ | |
1680 | return 3; | |
1681 | } | |
1682 | } | |
1683 | break; | |
1684 | case 'x': | |
1685 | if (mnemonic[2] == 'r' || mnemonic[2] == 's') | |
1686 | return 0; /* fxsave/fxrstor are not really math ops */ | |
1687 | break; | |
1688 | } | |
252b5132 | 1689 | |
9306ca4a | 1690 | return 1; |
252b5132 RH |
1691 | } |
1692 | ||
1693 | /* This is the guts of the machine-dependent assembler. LINE points to a | |
1694 | machine dependent instruction. This function is supposed to emit | |
1695 | the frags/bytes it assembles to. */ | |
1696 | ||
1697 | void | |
1698 | md_assemble (line) | |
1699 | char *line; | |
1700 | { | |
252b5132 | 1701 | int j; |
252b5132 RH |
1702 | char mnemonic[MAX_MNEM_SIZE]; |
1703 | ||
47926f60 | 1704 | /* Initialize globals. */ |
252b5132 RH |
1705 | memset (&i, '\0', sizeof (i)); |
1706 | for (j = 0; j < MAX_OPERANDS; j++) | |
1ae12ab7 | 1707 | i.reloc[j] = NO_RELOC; |
252b5132 RH |
1708 | memset (disp_expressions, '\0', sizeof (disp_expressions)); |
1709 | memset (im_expressions, '\0', sizeof (im_expressions)); | |
ce8a8b2f | 1710 | save_stack_p = save_stack; |
252b5132 RH |
1711 | |
1712 | /* First parse an instruction mnemonic & call i386_operand for the operands. | |
1713 | We assume that the scrubber has arranged it so that line[0] is the valid | |
47926f60 | 1714 | start of a (possibly prefixed) mnemonic. */ |
252b5132 | 1715 | |
29b0f896 AM |
1716 | line = parse_insn (line, mnemonic); |
1717 | if (line == NULL) | |
1718 | return; | |
252b5132 | 1719 | |
29b0f896 AM |
1720 | line = parse_operands (line, mnemonic); |
1721 | if (line == NULL) | |
1722 | return; | |
252b5132 | 1723 | |
4eed87de | 1724 | /* The order of the immediates should be reversed |
050dfa73 | 1725 | for 2 immediates extrq and insertq instructions */ |
4d456e3d L |
1726 | if ((i.imm_operands == 2) |
1727 | && ((strcmp (mnemonic, "extrq") == 0) | |
1728 | || (strcmp (mnemonic, "insertq") == 0))) | |
050dfa73 | 1729 | { |
4eed87de AM |
1730 | swap_2_operands (0, 1); |
1731 | /* "extrq" and insertq" are the only two instructions whose operands | |
050dfa73 MM |
1732 | have to be reversed even though they have two immediate operands. |
1733 | */ | |
1734 | if (intel_syntax) | |
1735 | swap_operands (); | |
1736 | } | |
1737 | ||
29b0f896 AM |
1738 | /* Now we've parsed the mnemonic into a set of templates, and have the |
1739 | operands at hand. */ | |
1740 | ||
1741 | /* All intel opcodes have reversed operands except for "bound" and | |
1742 | "enter". We also don't reverse intersegment "jmp" and "call" | |
1743 | instructions with 2 immediate operands so that the immediate segment | |
050dfa73 | 1744 | precedes the offset, as it does when in AT&T mode. */ |
4d456e3d L |
1745 | if (intel_syntax |
1746 | && i.operands > 1 | |
29b0f896 | 1747 | && (strcmp (mnemonic, "bound") != 0) |
30123838 | 1748 | && (strcmp (mnemonic, "invlpga") != 0) |
29b0f896 AM |
1749 | && !((i.types[0] & Imm) && (i.types[1] & Imm))) |
1750 | swap_operands (); | |
1751 | ||
1752 | if (i.imm_operands) | |
1753 | optimize_imm (); | |
1754 | ||
b300c311 L |
1755 | /* Don't optimize displacement for movabs since it only takes 64bit |
1756 | displacement. */ | |
1757 | if (i.disp_operands | |
1758 | && (flag_code != CODE_64BIT | |
1759 | || strcmp (mnemonic, "movabs") != 0)) | |
29b0f896 AM |
1760 | optimize_disp (); |
1761 | ||
1762 | /* Next, we find a template that matches the given insn, | |
1763 | making sure the overlap of the given operands types is consistent | |
1764 | with the template operand types. */ | |
252b5132 | 1765 | |
29b0f896 AM |
1766 | if (!match_template ()) |
1767 | return; | |
252b5132 | 1768 | |
cd61ebfe AM |
1769 | if (intel_syntax) |
1770 | { | |
1771 | /* Undo SYSV386_COMPAT brokenness when in Intel mode. See i386.h */ | |
1772 | if (SYSV386_COMPAT | |
1773 | && (i.tm.base_opcode & 0xfffffde0) == 0xdce0) | |
8a2ed489 | 1774 | i.tm.base_opcode ^= Opcode_FloatR; |
cd61ebfe AM |
1775 | |
1776 | /* Zap movzx and movsx suffix. The suffix may have been set from | |
1777 | "word ptr" or "byte ptr" on the source operand, but we'll use | |
1778 | the suffix later to choose the destination register. */ | |
1779 | if ((i.tm.base_opcode & ~9) == 0x0fb6) | |
9306ca4a JB |
1780 | { |
1781 | if (i.reg_operands < 2 | |
1782 | && !i.suffix | |
1783 | && (~i.tm.opcode_modifier | |
1784 | & (No_bSuf | |
1785 | | No_wSuf | |
1786 | | No_lSuf | |
1787 | | No_sSuf | |
1788 | | No_xSuf | |
1789 | | No_qSuf))) | |
1790 | as_bad (_("ambiguous operand size for `%s'"), i.tm.name); | |
1791 | ||
1792 | i.suffix = 0; | |
1793 | } | |
cd61ebfe | 1794 | } |
24eab124 | 1795 | |
29b0f896 AM |
1796 | if (i.tm.opcode_modifier & FWait) |
1797 | if (!add_prefix (FWAIT_OPCODE)) | |
1798 | return; | |
252b5132 | 1799 | |
29b0f896 AM |
1800 | /* Check string instruction segment overrides. */ |
1801 | if ((i.tm.opcode_modifier & IsString) != 0 && i.mem_operands != 0) | |
1802 | { | |
1803 | if (!check_string ()) | |
5dd0794d | 1804 | return; |
29b0f896 | 1805 | } |
5dd0794d | 1806 | |
29b0f896 AM |
1807 | if (!process_suffix ()) |
1808 | return; | |
e413e4e9 | 1809 | |
29b0f896 AM |
1810 | /* Make still unresolved immediate matches conform to size of immediate |
1811 | given in i.suffix. */ | |
1812 | if (!finalize_imm ()) | |
1813 | return; | |
252b5132 | 1814 | |
29b0f896 AM |
1815 | if (i.types[0] & Imm1) |
1816 | i.imm_operands = 0; /* kludge for shift insns. */ | |
1817 | if (i.types[0] & ImplicitRegister) | |
1818 | i.reg_operands--; | |
1819 | if (i.types[1] & ImplicitRegister) | |
1820 | i.reg_operands--; | |
1821 | if (i.types[2] & ImplicitRegister) | |
1822 | i.reg_operands--; | |
252b5132 | 1823 | |
29b0f896 AM |
1824 | if (i.tm.opcode_modifier & ImmExt) |
1825 | { | |
02fc3089 L |
1826 | expressionS *exp; |
1827 | ||
b7d9ef37 | 1828 | if ((i.tm.cpu_flags & CpuSSE3) && i.operands > 0) |
ca164297 | 1829 | { |
b7d9ef37 | 1830 | /* Streaming SIMD extensions 3 Instructions have the fixed |
ca164297 L |
1831 | operands with an opcode suffix which is coded in the same |
1832 | place as an 8-bit immediate field would be. Here we check | |
1833 | those operands and remove them afterwards. */ | |
1834 | unsigned int x; | |
1835 | ||
a4622f40 | 1836 | for (x = 0; x < i.operands; x++) |
ca164297 | 1837 | if (i.op[x].regs->reg_num != x) |
a540244d L |
1838 | as_bad (_("can't use register '%s%s' as operand %d in '%s'."), |
1839 | register_prefix, | |
1840 | i.op[x].regs->reg_name, | |
1841 | x + 1, | |
1842 | i.tm.name); | |
ca164297 L |
1843 | i.operands = 0; |
1844 | } | |
1845 | ||
29b0f896 AM |
1846 | /* These AMD 3DNow! and Intel Katmai New Instructions have an |
1847 | opcode suffix which is coded in the same place as an 8-bit | |
1848 | immediate field would be. Here we fake an 8-bit immediate | |
1849 | operand from the opcode suffix stored in tm.extension_opcode. */ | |
252b5132 | 1850 | |
29b0f896 | 1851 | assert (i.imm_operands == 0 && i.operands <= 2 && 2 < MAX_OPERANDS); |
252b5132 | 1852 | |
29b0f896 AM |
1853 | exp = &im_expressions[i.imm_operands++]; |
1854 | i.op[i.operands].imms = exp; | |
1855 | i.types[i.operands++] = Imm8; | |
1856 | exp->X_op = O_constant; | |
1857 | exp->X_add_number = i.tm.extension_opcode; | |
1858 | i.tm.extension_opcode = None; | |
1859 | } | |
252b5132 | 1860 | |
29b0f896 AM |
1861 | /* For insns with operands there are more diddles to do to the opcode. */ |
1862 | if (i.operands) | |
1863 | { | |
1864 | if (!process_operands ()) | |
1865 | return; | |
1866 | } | |
1867 | else if (!quiet_warnings && (i.tm.opcode_modifier & Ugh) != 0) | |
1868 | { | |
1869 | /* UnixWare fsub no args is alias for fsubp, fadd -> faddp, etc. */ | |
1870 | as_warn (_("translating to `%sp'"), i.tm.name); | |
1871 | } | |
252b5132 | 1872 | |
29b0f896 AM |
1873 | /* Handle conversion of 'int $3' --> special int3 insn. */ |
1874 | if (i.tm.base_opcode == INT_OPCODE && i.op[0].imms->X_add_number == 3) | |
1875 | { | |
1876 | i.tm.base_opcode = INT3_OPCODE; | |
1877 | i.imm_operands = 0; | |
1878 | } | |
252b5132 | 1879 | |
29b0f896 AM |
1880 | if ((i.tm.opcode_modifier & (Jump | JumpByte | JumpDword)) |
1881 | && i.op[0].disps->X_op == O_constant) | |
1882 | { | |
1883 | /* Convert "jmp constant" (and "call constant") to a jump (call) to | |
1884 | the absolute address given by the constant. Since ix86 jumps and | |
1885 | calls are pc relative, we need to generate a reloc. */ | |
1886 | i.op[0].disps->X_add_symbol = &abs_symbol; | |
1887 | i.op[0].disps->X_op = O_symbol; | |
1888 | } | |
252b5132 | 1889 | |
29b0f896 | 1890 | if ((i.tm.opcode_modifier & Rex64) != 0) |
161a04f6 | 1891 | i.rex |= REX_W; |
252b5132 | 1892 | |
29b0f896 AM |
1893 | /* For 8 bit registers we need an empty rex prefix. Also if the |
1894 | instruction already has a prefix, we need to convert old | |
1895 | registers to new ones. */ | |
773f551c | 1896 | |
29b0f896 AM |
1897 | if (((i.types[0] & Reg8) != 0 |
1898 | && (i.op[0].regs->reg_flags & RegRex64) != 0) | |
1899 | || ((i.types[1] & Reg8) != 0 | |
1900 | && (i.op[1].regs->reg_flags & RegRex64) != 0) | |
1901 | || (((i.types[0] & Reg8) != 0 || (i.types[1] & Reg8) != 0) | |
1902 | && i.rex != 0)) | |
1903 | { | |
1904 | int x; | |
726c5dcd | 1905 | |
29b0f896 AM |
1906 | i.rex |= REX_OPCODE; |
1907 | for (x = 0; x < 2; x++) | |
1908 | { | |
1909 | /* Look for 8 bit operand that uses old registers. */ | |
1910 | if ((i.types[x] & Reg8) != 0 | |
1911 | && (i.op[x].regs->reg_flags & RegRex64) == 0) | |
773f551c | 1912 | { |
29b0f896 AM |
1913 | /* In case it is "hi" register, give up. */ |
1914 | if (i.op[x].regs->reg_num > 3) | |
a540244d | 1915 | as_bad (_("can't encode register '%s%s' in an " |
4eed87de | 1916 | "instruction requiring REX prefix."), |
a540244d | 1917 | register_prefix, i.op[x].regs->reg_name); |
773f551c | 1918 | |
29b0f896 AM |
1919 | /* Otherwise it is equivalent to the extended register. |
1920 | Since the encoding doesn't change this is merely | |
1921 | cosmetic cleanup for debug output. */ | |
1922 | ||
1923 | i.op[x].regs = i.op[x].regs + 8; | |
773f551c | 1924 | } |
29b0f896 AM |
1925 | } |
1926 | } | |
773f551c | 1927 | |
29b0f896 AM |
1928 | if (i.rex != 0) |
1929 | add_prefix (REX_OPCODE | i.rex); | |
1930 | ||
1931 | /* We are ready to output the insn. */ | |
1932 | output_insn (); | |
1933 | } | |
1934 | ||
1935 | static char * | |
e3bb37b5 | 1936 | parse_insn (char *line, char *mnemonic) |
29b0f896 AM |
1937 | { |
1938 | char *l = line; | |
1939 | char *token_start = l; | |
1940 | char *mnem_p; | |
5c6af06e JB |
1941 | int supported; |
1942 | const template *t; | |
29b0f896 AM |
1943 | |
1944 | /* Non-zero if we found a prefix only acceptable with string insns. */ | |
1945 | const char *expecting_string_instruction = NULL; | |
45288df1 | 1946 | |
29b0f896 AM |
1947 | while (1) |
1948 | { | |
1949 | mnem_p = mnemonic; | |
1950 | while ((*mnem_p = mnemonic_chars[(unsigned char) *l]) != 0) | |
1951 | { | |
1952 | mnem_p++; | |
1953 | if (mnem_p >= mnemonic + MAX_MNEM_SIZE) | |
45288df1 | 1954 | { |
29b0f896 AM |
1955 | as_bad (_("no such instruction: `%s'"), token_start); |
1956 | return NULL; | |
1957 | } | |
1958 | l++; | |
1959 | } | |
1960 | if (!is_space_char (*l) | |
1961 | && *l != END_OF_INSN | |
e44823cf JB |
1962 | && (intel_syntax |
1963 | || (*l != PREFIX_SEPARATOR | |
1964 | && *l != ','))) | |
29b0f896 AM |
1965 | { |
1966 | as_bad (_("invalid character %s in mnemonic"), | |
1967 | output_invalid (*l)); | |
1968 | return NULL; | |
1969 | } | |
1970 | if (token_start == l) | |
1971 | { | |
e44823cf | 1972 | if (!intel_syntax && *l == PREFIX_SEPARATOR) |
29b0f896 AM |
1973 | as_bad (_("expecting prefix; got nothing")); |
1974 | else | |
1975 | as_bad (_("expecting mnemonic; got nothing")); | |
1976 | return NULL; | |
1977 | } | |
45288df1 | 1978 | |
29b0f896 AM |
1979 | /* Look up instruction (or prefix) via hash table. */ |
1980 | current_templates = hash_find (op_hash, mnemonic); | |
47926f60 | 1981 | |
29b0f896 AM |
1982 | if (*l != END_OF_INSN |
1983 | && (!is_space_char (*l) || l[1] != END_OF_INSN) | |
1984 | && current_templates | |
1985 | && (current_templates->start->opcode_modifier & IsPrefix)) | |
1986 | { | |
2dd88dca JB |
1987 | if (current_templates->start->cpu_flags |
1988 | & (flag_code != CODE_64BIT ? Cpu64 : CpuNo64)) | |
1989 | { | |
1990 | as_bad ((flag_code != CODE_64BIT | |
1991 | ? _("`%s' is only supported in 64-bit mode") | |
1992 | : _("`%s' is not supported in 64-bit mode")), | |
1993 | current_templates->start->name); | |
1994 | return NULL; | |
1995 | } | |
29b0f896 AM |
1996 | /* If we are in 16-bit mode, do not allow addr16 or data16. |
1997 | Similarly, in 32-bit mode, do not allow addr32 or data32. */ | |
1998 | if ((current_templates->start->opcode_modifier & (Size16 | Size32)) | |
1999 | && flag_code != CODE_64BIT | |
2000 | && (((current_templates->start->opcode_modifier & Size32) != 0) | |
2001 | ^ (flag_code == CODE_16BIT))) | |
2002 | { | |
2003 | as_bad (_("redundant %s prefix"), | |
2004 | current_templates->start->name); | |
2005 | return NULL; | |
45288df1 | 2006 | } |
29b0f896 AM |
2007 | /* Add prefix, checking for repeated prefixes. */ |
2008 | switch (add_prefix (current_templates->start->base_opcode)) | |
2009 | { | |
2010 | case 0: | |
2011 | return NULL; | |
2012 | case 2: | |
2013 | expecting_string_instruction = current_templates->start->name; | |
2014 | break; | |
2015 | } | |
2016 | /* Skip past PREFIX_SEPARATOR and reset token_start. */ | |
2017 | token_start = ++l; | |
2018 | } | |
2019 | else | |
2020 | break; | |
2021 | } | |
45288df1 | 2022 | |
29b0f896 AM |
2023 | if (!current_templates) |
2024 | { | |
2025 | /* See if we can get a match by trimming off a suffix. */ | |
2026 | switch (mnem_p[-1]) | |
2027 | { | |
2028 | case WORD_MNEM_SUFFIX: | |
9306ca4a JB |
2029 | if (intel_syntax && (intel_float_operand (mnemonic) & 2)) |
2030 | i.suffix = SHORT_MNEM_SUFFIX; | |
2031 | else | |
29b0f896 AM |
2032 | case BYTE_MNEM_SUFFIX: |
2033 | case QWORD_MNEM_SUFFIX: | |
2034 | i.suffix = mnem_p[-1]; | |
2035 | mnem_p[-1] = '\0'; | |
2036 | current_templates = hash_find (op_hash, mnemonic); | |
2037 | break; | |
2038 | case SHORT_MNEM_SUFFIX: | |
2039 | case LONG_MNEM_SUFFIX: | |
2040 | if (!intel_syntax) | |
2041 | { | |
2042 | i.suffix = mnem_p[-1]; | |
2043 | mnem_p[-1] = '\0'; | |
2044 | current_templates = hash_find (op_hash, mnemonic); | |
2045 | } | |
2046 | break; | |
252b5132 | 2047 | |
29b0f896 AM |
2048 | /* Intel Syntax. */ |
2049 | case 'd': | |
2050 | if (intel_syntax) | |
2051 | { | |
9306ca4a | 2052 | if (intel_float_operand (mnemonic) == 1) |
29b0f896 AM |
2053 | i.suffix = SHORT_MNEM_SUFFIX; |
2054 | else | |
2055 | i.suffix = LONG_MNEM_SUFFIX; | |
2056 | mnem_p[-1] = '\0'; | |
2057 | current_templates = hash_find (op_hash, mnemonic); | |
2058 | } | |
2059 | break; | |
2060 | } | |
2061 | if (!current_templates) | |
2062 | { | |
2063 | as_bad (_("no such instruction: `%s'"), token_start); | |
2064 | return NULL; | |
2065 | } | |
2066 | } | |
252b5132 | 2067 | |
29b0f896 AM |
2068 | if (current_templates->start->opcode_modifier & (Jump | JumpByte)) |
2069 | { | |
2070 | /* Check for a branch hint. We allow ",pt" and ",pn" for | |
2071 | predict taken and predict not taken respectively. | |
2072 | I'm not sure that branch hints actually do anything on loop | |
2073 | and jcxz insns (JumpByte) for current Pentium4 chips. They | |
2074 | may work in the future and it doesn't hurt to accept them | |
2075 | now. */ | |
2076 | if (l[0] == ',' && l[1] == 'p') | |
2077 | { | |
2078 | if (l[2] == 't') | |
2079 | { | |
2080 | if (!add_prefix (DS_PREFIX_OPCODE)) | |
2081 | return NULL; | |
2082 | l += 3; | |
2083 | } | |
2084 | else if (l[2] == 'n') | |
2085 | { | |
2086 | if (!add_prefix (CS_PREFIX_OPCODE)) | |
2087 | return NULL; | |
2088 | l += 3; | |
2089 | } | |
2090 | } | |
2091 | } | |
2092 | /* Any other comma loses. */ | |
2093 | if (*l == ',') | |
2094 | { | |
2095 | as_bad (_("invalid character %s in mnemonic"), | |
2096 | output_invalid (*l)); | |
2097 | return NULL; | |
2098 | } | |
252b5132 | 2099 | |
29b0f896 | 2100 | /* Check if instruction is supported on specified architecture. */ |
5c6af06e JB |
2101 | supported = 0; |
2102 | for (t = current_templates->start; t < current_templates->end; ++t) | |
2103 | { | |
2104 | if (!((t->cpu_flags & ~(Cpu64 | CpuNo64)) | |
2105 | & ~(cpu_arch_flags & ~(Cpu64 | CpuNo64)))) | |
64e74474 | 2106 | supported |= 1; |
5c6af06e | 2107 | if (!(t->cpu_flags & (flag_code == CODE_64BIT ? CpuNo64 : Cpu64))) |
64e74474 | 2108 | supported |= 2; |
5c6af06e JB |
2109 | } |
2110 | if (!(supported & 2)) | |
2111 | { | |
2112 | as_bad (flag_code == CODE_64BIT | |
2113 | ? _("`%s' is not supported in 64-bit mode") | |
2114 | : _("`%s' is only supported in 64-bit mode"), | |
2115 | current_templates->start->name); | |
2116 | return NULL; | |
2117 | } | |
2118 | if (!(supported & 1)) | |
29b0f896 | 2119 | { |
5c6af06e JB |
2120 | as_warn (_("`%s' is not supported on `%s%s'"), |
2121 | current_templates->start->name, | |
2122 | cpu_arch_name, | |
2123 | cpu_sub_arch_name ? cpu_sub_arch_name : ""); | |
29b0f896 AM |
2124 | } |
2125 | else if ((Cpu386 & ~cpu_arch_flags) && (flag_code != CODE_16BIT)) | |
2126 | { | |
2127 | as_warn (_("use .code16 to ensure correct addressing mode")); | |
2128 | } | |
252b5132 | 2129 | |
29b0f896 | 2130 | /* Check for rep/repne without a string instruction. */ |
f41bbced | 2131 | if (expecting_string_instruction) |
29b0f896 | 2132 | { |
f41bbced JB |
2133 | static templates override; |
2134 | ||
2135 | for (t = current_templates->start; t < current_templates->end; ++t) | |
2136 | if (t->opcode_modifier & IsString) | |
2137 | break; | |
2138 | if (t >= current_templates->end) | |
2139 | { | |
2140 | as_bad (_("expecting string instruction after `%s'"), | |
64e74474 | 2141 | expecting_string_instruction); |
f41bbced JB |
2142 | return NULL; |
2143 | } | |
2144 | for (override.start = t; t < current_templates->end; ++t) | |
2145 | if (!(t->opcode_modifier & IsString)) | |
2146 | break; | |
2147 | override.end = t; | |
2148 | current_templates = &override; | |
29b0f896 | 2149 | } |
252b5132 | 2150 | |
29b0f896 AM |
2151 | return l; |
2152 | } | |
252b5132 | 2153 | |
29b0f896 | 2154 | static char * |
e3bb37b5 | 2155 | parse_operands (char *l, const char *mnemonic) |
29b0f896 AM |
2156 | { |
2157 | char *token_start; | |
3138f287 | 2158 | |
29b0f896 AM |
2159 | /* 1 if operand is pending after ','. */ |
2160 | unsigned int expecting_operand = 0; | |
252b5132 | 2161 | |
29b0f896 AM |
2162 | /* Non-zero if operand parens not balanced. */ |
2163 | unsigned int paren_not_balanced; | |
2164 | ||
2165 | while (*l != END_OF_INSN) | |
2166 | { | |
2167 | /* Skip optional white space before operand. */ | |
2168 | if (is_space_char (*l)) | |
2169 | ++l; | |
2170 | if (!is_operand_char (*l) && *l != END_OF_INSN) | |
2171 | { | |
2172 | as_bad (_("invalid character %s before operand %d"), | |
2173 | output_invalid (*l), | |
2174 | i.operands + 1); | |
2175 | return NULL; | |
2176 | } | |
2177 | token_start = l; /* after white space */ | |
2178 | paren_not_balanced = 0; | |
2179 | while (paren_not_balanced || *l != ',') | |
2180 | { | |
2181 | if (*l == END_OF_INSN) | |
2182 | { | |
2183 | if (paren_not_balanced) | |
2184 | { | |
2185 | if (!intel_syntax) | |
2186 | as_bad (_("unbalanced parenthesis in operand %d."), | |
2187 | i.operands + 1); | |
2188 | else | |
2189 | as_bad (_("unbalanced brackets in operand %d."), | |
2190 | i.operands + 1); | |
2191 | return NULL; | |
2192 | } | |
2193 | else | |
2194 | break; /* we are done */ | |
2195 | } | |
2196 | else if (!is_operand_char (*l) && !is_space_char (*l)) | |
2197 | { | |
2198 | as_bad (_("invalid character %s in operand %d"), | |
2199 | output_invalid (*l), | |
2200 | i.operands + 1); | |
2201 | return NULL; | |
2202 | } | |
2203 | if (!intel_syntax) | |
2204 | { | |
2205 | if (*l == '(') | |
2206 | ++paren_not_balanced; | |
2207 | if (*l == ')') | |
2208 | --paren_not_balanced; | |
2209 | } | |
2210 | else | |
2211 | { | |
2212 | if (*l == '[') | |
2213 | ++paren_not_balanced; | |
2214 | if (*l == ']') | |
2215 | --paren_not_balanced; | |
2216 | } | |
2217 | l++; | |
2218 | } | |
2219 | if (l != token_start) | |
2220 | { /* Yes, we've read in another operand. */ | |
2221 | unsigned int operand_ok; | |
2222 | this_operand = i.operands++; | |
2223 | if (i.operands > MAX_OPERANDS) | |
2224 | { | |
2225 | as_bad (_("spurious operands; (%d operands/instruction max)"), | |
2226 | MAX_OPERANDS); | |
2227 | return NULL; | |
2228 | } | |
2229 | /* Now parse operand adding info to 'i' as we go along. */ | |
2230 | END_STRING_AND_SAVE (l); | |
2231 | ||
2232 | if (intel_syntax) | |
2233 | operand_ok = | |
2234 | i386_intel_operand (token_start, | |
2235 | intel_float_operand (mnemonic)); | |
2236 | else | |
2237 | operand_ok = i386_operand (token_start); | |
2238 | ||
2239 | RESTORE_END_STRING (l); | |
2240 | if (!operand_ok) | |
2241 | return NULL; | |
2242 | } | |
2243 | else | |
2244 | { | |
2245 | if (expecting_operand) | |
2246 | { | |
2247 | expecting_operand_after_comma: | |
2248 | as_bad (_("expecting operand after ','; got nothing")); | |
2249 | return NULL; | |
2250 | } | |
2251 | if (*l == ',') | |
2252 | { | |
2253 | as_bad (_("expecting operand before ','; got nothing")); | |
2254 | return NULL; | |
2255 | } | |
2256 | } | |
7f3f1ea2 | 2257 | |
29b0f896 AM |
2258 | /* Now *l must be either ',' or END_OF_INSN. */ |
2259 | if (*l == ',') | |
2260 | { | |
2261 | if (*++l == END_OF_INSN) | |
2262 | { | |
2263 | /* Just skip it, if it's \n complain. */ | |
2264 | goto expecting_operand_after_comma; | |
2265 | } | |
2266 | expecting_operand = 1; | |
2267 | } | |
2268 | } | |
2269 | return l; | |
2270 | } | |
7f3f1ea2 | 2271 | |
050dfa73 | 2272 | static void |
4d456e3d | 2273 | swap_2_operands (int xchg1, int xchg2) |
050dfa73 MM |
2274 | { |
2275 | union i386_op temp_op; | |
2276 | unsigned int temp_type; | |
2277 | enum bfd_reloc_code_real temp_reloc; | |
4eed87de | 2278 | |
050dfa73 MM |
2279 | temp_type = i.types[xchg2]; |
2280 | i.types[xchg2] = i.types[xchg1]; | |
2281 | i.types[xchg1] = temp_type; | |
2282 | temp_op = i.op[xchg2]; | |
2283 | i.op[xchg2] = i.op[xchg1]; | |
2284 | i.op[xchg1] = temp_op; | |
2285 | temp_reloc = i.reloc[xchg2]; | |
2286 | i.reloc[xchg2] = i.reloc[xchg1]; | |
2287 | i.reloc[xchg1] = temp_reloc; | |
2288 | } | |
2289 | ||
29b0f896 | 2290 | static void |
e3bb37b5 | 2291 | swap_operands (void) |
29b0f896 | 2292 | { |
b7c61d9a | 2293 | switch (i.operands) |
050dfa73 | 2294 | { |
b7c61d9a | 2295 | case 4: |
4d456e3d | 2296 | swap_2_operands (1, i.operands - 2); |
b7c61d9a L |
2297 | case 3: |
2298 | case 2: | |
4d456e3d | 2299 | swap_2_operands (0, i.operands - 1); |
b7c61d9a L |
2300 | break; |
2301 | default: | |
2302 | abort (); | |
29b0f896 | 2303 | } |
29b0f896 AM |
2304 | |
2305 | if (i.mem_operands == 2) | |
2306 | { | |
2307 | const seg_entry *temp_seg; | |
2308 | temp_seg = i.seg[0]; | |
2309 | i.seg[0] = i.seg[1]; | |
2310 | i.seg[1] = temp_seg; | |
2311 | } | |
2312 | } | |
252b5132 | 2313 | |
29b0f896 AM |
2314 | /* Try to ensure constant immediates are represented in the smallest |
2315 | opcode possible. */ | |
2316 | static void | |
e3bb37b5 | 2317 | optimize_imm (void) |
29b0f896 AM |
2318 | { |
2319 | char guess_suffix = 0; | |
2320 | int op; | |
252b5132 | 2321 | |
29b0f896 AM |
2322 | if (i.suffix) |
2323 | guess_suffix = i.suffix; | |
2324 | else if (i.reg_operands) | |
2325 | { | |
2326 | /* Figure out a suffix from the last register operand specified. | |
2327 | We can't do this properly yet, ie. excluding InOutPortReg, | |
2328 | but the following works for instructions with immediates. | |
2329 | In any case, we can't set i.suffix yet. */ | |
2330 | for (op = i.operands; --op >= 0;) | |
2331 | if (i.types[op] & Reg) | |
252b5132 | 2332 | { |
29b0f896 AM |
2333 | if (i.types[op] & Reg8) |
2334 | guess_suffix = BYTE_MNEM_SUFFIX; | |
2335 | else if (i.types[op] & Reg16) | |
2336 | guess_suffix = WORD_MNEM_SUFFIX; | |
2337 | else if (i.types[op] & Reg32) | |
2338 | guess_suffix = LONG_MNEM_SUFFIX; | |
2339 | else if (i.types[op] & Reg64) | |
2340 | guess_suffix = QWORD_MNEM_SUFFIX; | |
2341 | break; | |
252b5132 | 2342 | } |
29b0f896 AM |
2343 | } |
2344 | else if ((flag_code == CODE_16BIT) ^ (i.prefix[DATA_PREFIX] != 0)) | |
2345 | guess_suffix = WORD_MNEM_SUFFIX; | |
2346 | ||
2347 | for (op = i.operands; --op >= 0;) | |
2348 | if (i.types[op] & Imm) | |
2349 | { | |
2350 | switch (i.op[op].imms->X_op) | |
252b5132 | 2351 | { |
29b0f896 AM |
2352 | case O_constant: |
2353 | /* If a suffix is given, this operand may be shortened. */ | |
2354 | switch (guess_suffix) | |
252b5132 | 2355 | { |
29b0f896 AM |
2356 | case LONG_MNEM_SUFFIX: |
2357 | i.types[op] |= Imm32 | Imm64; | |
2358 | break; | |
2359 | case WORD_MNEM_SUFFIX: | |
2360 | i.types[op] |= Imm16 | Imm32S | Imm32 | Imm64; | |
2361 | break; | |
2362 | case BYTE_MNEM_SUFFIX: | |
2363 | i.types[op] |= Imm16 | Imm8 | Imm8S | Imm32S | Imm32 | Imm64; | |
2364 | break; | |
252b5132 | 2365 | } |
252b5132 | 2366 | |
29b0f896 AM |
2367 | /* If this operand is at most 16 bits, convert it |
2368 | to a signed 16 bit number before trying to see | |
2369 | whether it will fit in an even smaller size. | |
2370 | This allows a 16-bit operand such as $0xffe0 to | |
2371 | be recognised as within Imm8S range. */ | |
2372 | if ((i.types[op] & Imm16) | |
2373 | && (i.op[op].imms->X_add_number & ~(offsetT) 0xffff) == 0) | |
252b5132 | 2374 | { |
29b0f896 AM |
2375 | i.op[op].imms->X_add_number = |
2376 | (((i.op[op].imms->X_add_number & 0xffff) ^ 0x8000) - 0x8000); | |
2377 | } | |
2378 | if ((i.types[op] & Imm32) | |
2379 | && ((i.op[op].imms->X_add_number & ~(((offsetT) 2 << 31) - 1)) | |
2380 | == 0)) | |
2381 | { | |
2382 | i.op[op].imms->X_add_number = ((i.op[op].imms->X_add_number | |
2383 | ^ ((offsetT) 1 << 31)) | |
2384 | - ((offsetT) 1 << 31)); | |
2385 | } | |
2386 | i.types[op] |= smallest_imm_type (i.op[op].imms->X_add_number); | |
252b5132 | 2387 | |
29b0f896 AM |
2388 | /* We must avoid matching of Imm32 templates when 64bit |
2389 | only immediate is available. */ | |
2390 | if (guess_suffix == QWORD_MNEM_SUFFIX) | |
2391 | i.types[op] &= ~Imm32; | |
2392 | break; | |
252b5132 | 2393 | |
29b0f896 AM |
2394 | case O_absent: |
2395 | case O_register: | |
2396 | abort (); | |
2397 | ||
2398 | /* Symbols and expressions. */ | |
2399 | default: | |
9cd96992 JB |
2400 | /* Convert symbolic operand to proper sizes for matching, but don't |
2401 | prevent matching a set of insns that only supports sizes other | |
2402 | than those matching the insn suffix. */ | |
2403 | { | |
2404 | unsigned int mask, allowed = 0; | |
2405 | const template *t; | |
2406 | ||
4eed87de AM |
2407 | for (t = current_templates->start; |
2408 | t < current_templates->end; | |
2409 | ++t) | |
2410 | allowed |= t->operand_types[op]; | |
9cd96992 JB |
2411 | switch (guess_suffix) |
2412 | { | |
2413 | case QWORD_MNEM_SUFFIX: | |
2414 | mask = Imm64 | Imm32S; | |
2415 | break; | |
2416 | case LONG_MNEM_SUFFIX: | |
2417 | mask = Imm32; | |
2418 | break; | |
2419 | case WORD_MNEM_SUFFIX: | |
2420 | mask = Imm16; | |
2421 | break; | |
2422 | case BYTE_MNEM_SUFFIX: | |
2423 | mask = Imm8; | |
2424 | break; | |
2425 | default: | |
2426 | mask = 0; | |
2427 | break; | |
2428 | } | |
64e74474 AM |
2429 | if (mask & allowed) |
2430 | i.types[op] &= mask; | |
9cd96992 | 2431 | } |
29b0f896 | 2432 | break; |
252b5132 | 2433 | } |
29b0f896 AM |
2434 | } |
2435 | } | |
47926f60 | 2436 | |
29b0f896 AM |
2437 | /* Try to use the smallest displacement type too. */ |
2438 | static void | |
e3bb37b5 | 2439 | optimize_disp (void) |
29b0f896 AM |
2440 | { |
2441 | int op; | |
3e73aa7c | 2442 | |
29b0f896 | 2443 | for (op = i.operands; --op >= 0;) |
b300c311 | 2444 | if (i.types[op] & Disp) |
252b5132 | 2445 | { |
b300c311 | 2446 | if (i.op[op].disps->X_op == O_constant) |
252b5132 | 2447 | { |
b300c311 | 2448 | offsetT disp = i.op[op].disps->X_add_number; |
29b0f896 | 2449 | |
b300c311 L |
2450 | if ((i.types[op] & Disp16) |
2451 | && (disp & ~(offsetT) 0xffff) == 0) | |
2452 | { | |
2453 | /* If this operand is at most 16 bits, convert | |
2454 | to a signed 16 bit number and don't use 64bit | |
2455 | displacement. */ | |
2456 | disp = (((disp & 0xffff) ^ 0x8000) - 0x8000); | |
2457 | i.types[op] &= ~Disp64; | |
2458 | } | |
2459 | if ((i.types[op] & Disp32) | |
2460 | && (disp & ~(((offsetT) 2 << 31) - 1)) == 0) | |
2461 | { | |
2462 | /* If this operand is at most 32 bits, convert | |
2463 | to a signed 32 bit number and don't use 64bit | |
2464 | displacement. */ | |
2465 | disp &= (((offsetT) 2 << 31) - 1); | |
2466 | disp = (disp ^ ((offsetT) 1 << 31)) - ((addressT) 1 << 31); | |
2467 | i.types[op] &= ~Disp64; | |
2468 | } | |
2469 | if (!disp && (i.types[op] & BaseIndex)) | |
2470 | { | |
2471 | i.types[op] &= ~Disp; | |
2472 | i.op[op].disps = 0; | |
2473 | i.disp_operands--; | |
2474 | } | |
2475 | else if (flag_code == CODE_64BIT) | |
2476 | { | |
2477 | if (fits_in_signed_long (disp)) | |
28a9d8f5 L |
2478 | { |
2479 | i.types[op] &= ~Disp64; | |
2480 | i.types[op] |= Disp32S; | |
2481 | } | |
b300c311 L |
2482 | if (fits_in_unsigned_long (disp)) |
2483 | i.types[op] |= Disp32; | |
2484 | } | |
2485 | if ((i.types[op] & (Disp32 | Disp32S | Disp16)) | |
2486 | && fits_in_signed_byte (disp)) | |
2487 | i.types[op] |= Disp8; | |
252b5132 | 2488 | } |
67a4f2b7 AO |
2489 | else if (i.reloc[op] == BFD_RELOC_386_TLS_DESC_CALL |
2490 | || i.reloc[op] == BFD_RELOC_X86_64_TLSDESC_CALL) | |
2491 | { | |
2492 | fix_new_exp (frag_now, frag_more (0) - frag_now->fr_literal, 0, | |
2493 | i.op[op].disps, 0, i.reloc[op]); | |
2494 | i.types[op] &= ~Disp; | |
2495 | } | |
2496 | else | |
b300c311 L |
2497 | /* We only support 64bit displacement on constants. */ |
2498 | i.types[op] &= ~Disp64; | |
252b5132 | 2499 | } |
29b0f896 AM |
2500 | } |
2501 | ||
2502 | static int | |
e3bb37b5 | 2503 | match_template (void) |
29b0f896 AM |
2504 | { |
2505 | /* Points to template once we've found it. */ | |
2506 | const template *t; | |
f48ff2ae | 2507 | unsigned int overlap0, overlap1, overlap2, overlap3; |
29b0f896 AM |
2508 | unsigned int found_reverse_match; |
2509 | int suffix_check; | |
f48ff2ae | 2510 | unsigned int operand_types [MAX_OPERANDS]; |
539e75ad | 2511 | int addr_prefix_disp; |
a5c311ca | 2512 | unsigned int j; |
29b0f896 | 2513 | |
f48ff2ae L |
2514 | #if MAX_OPERANDS != 4 |
2515 | # error "MAX_OPERANDS must be 4." | |
2516 | #endif | |
2517 | ||
29b0f896 AM |
2518 | #define MATCH(overlap, given, template) \ |
2519 | ((overlap & ~JumpAbsolute) \ | |
2520 | && (((given) & (BaseIndex | JumpAbsolute)) \ | |
2521 | == ((overlap) & (BaseIndex | JumpAbsolute)))) | |
2522 | ||
2523 | /* If given types r0 and r1 are registers they must be of the same type | |
2524 | unless the expected operand type register overlap is null. | |
2525 | Note that Acc in a template matches every size of reg. */ | |
2526 | #define CONSISTENT_REGISTER_MATCH(m0, g0, t0, m1, g1, t1) \ | |
2527 | (((g0) & Reg) == 0 || ((g1) & Reg) == 0 \ | |
2528 | || ((g0) & Reg) == ((g1) & Reg) \ | |
2529 | || ((((m0) & Acc) ? Reg : (t0)) & (((m1) & Acc) ? Reg : (t1)) & Reg) == 0 ) | |
2530 | ||
2531 | overlap0 = 0; | |
2532 | overlap1 = 0; | |
2533 | overlap2 = 0; | |
f48ff2ae | 2534 | overlap3 = 0; |
29b0f896 | 2535 | found_reverse_match = 0; |
a5c311ca L |
2536 | for (j = 0; j < MAX_OPERANDS; j++) |
2537 | operand_types [j] = 0; | |
539e75ad | 2538 | addr_prefix_disp = -1; |
29b0f896 AM |
2539 | suffix_check = (i.suffix == BYTE_MNEM_SUFFIX |
2540 | ? No_bSuf | |
2541 | : (i.suffix == WORD_MNEM_SUFFIX | |
2542 | ? No_wSuf | |
2543 | : (i.suffix == SHORT_MNEM_SUFFIX | |
2544 | ? No_sSuf | |
2545 | : (i.suffix == LONG_MNEM_SUFFIX | |
2546 | ? No_lSuf | |
2547 | : (i.suffix == QWORD_MNEM_SUFFIX | |
2548 | ? No_qSuf | |
2549 | : (i.suffix == LONG_DOUBLE_MNEM_SUFFIX | |
2550 | ? No_xSuf : 0)))))); | |
2551 | ||
45aa61fe | 2552 | for (t = current_templates->start; t < current_templates->end; t++) |
29b0f896 | 2553 | { |
539e75ad L |
2554 | addr_prefix_disp = -1; |
2555 | ||
29b0f896 AM |
2556 | /* Must have right number of operands. */ |
2557 | if (i.operands != t->operands) | |
2558 | continue; | |
2559 | ||
20592a94 | 2560 | /* Check the suffix, except for some instructions in intel mode. */ |
29b0f896 AM |
2561 | if ((t->opcode_modifier & suffix_check) |
2562 | && !(intel_syntax | |
9306ca4a | 2563 | && (t->opcode_modifier & IgnoreSize))) |
29b0f896 AM |
2564 | continue; |
2565 | ||
a5c311ca L |
2566 | for (j = 0; j < MAX_OPERANDS; j++) |
2567 | operand_types [j] = t->operand_types [j]; | |
539e75ad | 2568 | |
45aa61fe AM |
2569 | /* In general, don't allow 64-bit operands in 32-bit mode. */ |
2570 | if (i.suffix == QWORD_MNEM_SUFFIX | |
2571 | && flag_code != CODE_64BIT | |
2572 | && (intel_syntax | |
2573 | ? (!(t->opcode_modifier & IgnoreSize) | |
2574 | && !intel_float_operand (t->name)) | |
2575 | : intel_float_operand (t->name) != 2) | |
539e75ad L |
2576 | && (!(operand_types[0] & (RegMMX | RegXMM)) |
2577 | || !(operand_types[t->operands > 1] & (RegMMX | RegXMM))) | |
45aa61fe AM |
2578 | && (t->base_opcode != 0x0fc7 |
2579 | || t->extension_opcode != 1 /* cmpxchg8b */)) | |
2580 | continue; | |
2581 | ||
29b0f896 AM |
2582 | /* Do not verify operands when there are none. */ |
2583 | else if (!t->operands) | |
2584 | { | |
2585 | if (t->cpu_flags & ~cpu_arch_flags) | |
2586 | continue; | |
2587 | /* We've found a match; break out of loop. */ | |
2588 | break; | |
2589 | } | |
252b5132 | 2590 | |
539e75ad L |
2591 | /* Address size prefix will turn Disp64/Disp32/Disp16 operand |
2592 | into Disp32/Disp16/Disp32 operand. */ | |
2593 | if (i.prefix[ADDR_PREFIX] != 0) | |
2594 | { | |
a5c311ca | 2595 | unsigned int DispOn = 0, DispOff = 0; |
539e75ad L |
2596 | |
2597 | switch (flag_code) | |
2598 | { | |
2599 | case CODE_16BIT: | |
2600 | DispOn = Disp32; | |
2601 | DispOff = Disp16; | |
2602 | break; | |
2603 | case CODE_32BIT: | |
2604 | DispOn = Disp16; | |
2605 | DispOff = Disp32; | |
2606 | break; | |
2607 | case CODE_64BIT: | |
2608 | DispOn = Disp32; | |
2609 | DispOff = Disp64; | |
2610 | break; | |
2611 | } | |
2612 | ||
f48ff2ae | 2613 | for (j = 0; j < MAX_OPERANDS; j++) |
539e75ad L |
2614 | { |
2615 | /* There should be only one Disp operand. */ | |
2616 | if ((operand_types[j] & DispOff)) | |
2617 | { | |
2618 | addr_prefix_disp = j; | |
2619 | operand_types[j] |= DispOn; | |
2620 | operand_types[j] &= ~DispOff; | |
2621 | break; | |
2622 | } | |
2623 | } | |
2624 | } | |
2625 | ||
2626 | overlap0 = i.types[0] & operand_types[0]; | |
29b0f896 AM |
2627 | switch (t->operands) |
2628 | { | |
2629 | case 1: | |
539e75ad | 2630 | if (!MATCH (overlap0, i.types[0], operand_types[0])) |
29b0f896 AM |
2631 | continue; |
2632 | break; | |
2633 | case 2: | |
8b38ad71 L |
2634 | /* xchg %eax, %eax is a special case. It is an aliase for nop |
2635 | only in 32bit mode and we can use opcode 0x90. In 64bit | |
2636 | mode, we can't use 0x90 for xchg %eax, %eax since it should | |
2637 | zero-extend %eax to %rax. */ | |
2638 | if (flag_code == CODE_64BIT | |
2639 | && t->base_opcode == 0x90 | |
2640 | && i.types [0] == (Acc | Reg32) | |
2641 | && i.types [1] == (Acc | Reg32)) | |
2642 | continue; | |
29b0f896 | 2643 | case 3: |
f48ff2ae | 2644 | case 4: |
539e75ad L |
2645 | overlap1 = i.types[1] & operand_types[1]; |
2646 | if (!MATCH (overlap0, i.types[0], operand_types[0]) | |
2647 | || !MATCH (overlap1, i.types[1], operand_types[1]) | |
cb712a9e | 2648 | /* monitor in SSE3 is a very special case. The first |
708587a4 | 2649 | register and the second register may have different |
381d071f | 2650 | sizes. The same applies to crc32 in SSE4.2. */ |
cb712a9e L |
2651 | || !((t->base_opcode == 0x0f01 |
2652 | && t->extension_opcode == 0xc8) | |
381d071f | 2653 | || t->base_opcode == 0xf20f38f1 |
cb712a9e | 2654 | || CONSISTENT_REGISTER_MATCH (overlap0, i.types[0], |
539e75ad | 2655 | operand_types[0], |
cb712a9e | 2656 | overlap1, i.types[1], |
539e75ad | 2657 | operand_types[1]))) |
29b0f896 AM |
2658 | { |
2659 | /* Check if other direction is valid ... */ | |
2660 | if ((t->opcode_modifier & (D | FloatD)) == 0) | |
2661 | continue; | |
2662 | ||
2663 | /* Try reversing direction of operands. */ | |
539e75ad L |
2664 | overlap0 = i.types[0] & operand_types[1]; |
2665 | overlap1 = i.types[1] & operand_types[0]; | |
2666 | if (!MATCH (overlap0, i.types[0], operand_types[1]) | |
2667 | || !MATCH (overlap1, i.types[1], operand_types[0]) | |
29b0f896 | 2668 | || !CONSISTENT_REGISTER_MATCH (overlap0, i.types[0], |
539e75ad | 2669 | operand_types[1], |
29b0f896 | 2670 | overlap1, i.types[1], |
539e75ad | 2671 | operand_types[0])) |
29b0f896 AM |
2672 | { |
2673 | /* Does not match either direction. */ | |
2674 | continue; | |
2675 | } | |
2676 | /* found_reverse_match holds which of D or FloatDR | |
2677 | we've found. */ | |
8a2ed489 L |
2678 | if ((t->opcode_modifier & D)) |
2679 | found_reverse_match = Opcode_D; | |
2680 | else if ((t->opcode_modifier & FloatD)) | |
2681 | found_reverse_match = Opcode_FloatD; | |
2682 | else | |
2683 | found_reverse_match = 0; | |
2684 | if ((t->opcode_modifier & FloatR)) | |
2685 | found_reverse_match |= Opcode_FloatR; | |
29b0f896 | 2686 | } |
f48ff2ae | 2687 | else |
29b0f896 | 2688 | { |
f48ff2ae | 2689 | /* Found a forward 2 operand match here. */ |
d1cbb4db L |
2690 | switch (t->operands) |
2691 | { | |
2692 | case 4: | |
2693 | overlap3 = i.types[3] & operand_types[3]; | |
2694 | case 3: | |
2695 | overlap2 = i.types[2] & operand_types[2]; | |
2696 | break; | |
2697 | } | |
29b0f896 | 2698 | |
f48ff2ae L |
2699 | switch (t->operands) |
2700 | { | |
2701 | case 4: | |
2702 | if (!MATCH (overlap3, i.types[3], operand_types[3]) | |
2703 | || !CONSISTENT_REGISTER_MATCH (overlap2, | |
2704 | i.types[2], | |
2705 | operand_types[2], | |
2706 | overlap3, | |
2707 | i.types[3], | |
2708 | operand_types[3])) | |
2709 | continue; | |
2710 | case 3: | |
2711 | /* Here we make use of the fact that there are no | |
2712 | reverse match 3 operand instructions, and all 3 | |
2713 | operand instructions only need to be checked for | |
2714 | register consistency between operands 2 and 3. */ | |
2715 | if (!MATCH (overlap2, i.types[2], operand_types[2]) | |
2716 | || !CONSISTENT_REGISTER_MATCH (overlap1, | |
2717 | i.types[1], | |
2718 | operand_types[1], | |
2719 | overlap2, | |
2720 | i.types[2], | |
2721 | operand_types[2])) | |
2722 | continue; | |
2723 | break; | |
2724 | } | |
29b0f896 | 2725 | } |
f48ff2ae | 2726 | /* Found either forward/reverse 2, 3 or 4 operand match here: |
29b0f896 AM |
2727 | slip through to break. */ |
2728 | } | |
2729 | if (t->cpu_flags & ~cpu_arch_flags) | |
2730 | { | |
2731 | found_reverse_match = 0; | |
2732 | continue; | |
2733 | } | |
2734 | /* We've found a match; break out of loop. */ | |
2735 | break; | |
2736 | } | |
2737 | ||
2738 | if (t == current_templates->end) | |
2739 | { | |
2740 | /* We found no match. */ | |
2741 | as_bad (_("suffix or operands invalid for `%s'"), | |
2742 | current_templates->start->name); | |
2743 | return 0; | |
2744 | } | |
252b5132 | 2745 | |
29b0f896 AM |
2746 | if (!quiet_warnings) |
2747 | { | |
2748 | if (!intel_syntax | |
2749 | && ((i.types[0] & JumpAbsolute) | |
539e75ad | 2750 | != (operand_types[0] & JumpAbsolute))) |
29b0f896 AM |
2751 | { |
2752 | as_warn (_("indirect %s without `*'"), t->name); | |
2753 | } | |
2754 | ||
2755 | if ((t->opcode_modifier & (IsPrefix | IgnoreSize)) | |
2756 | == (IsPrefix | IgnoreSize)) | |
2757 | { | |
2758 | /* Warn them that a data or address size prefix doesn't | |
2759 | affect assembly of the next line of code. */ | |
2760 | as_warn (_("stand-alone `%s' prefix"), t->name); | |
2761 | } | |
2762 | } | |
2763 | ||
2764 | /* Copy the template we found. */ | |
2765 | i.tm = *t; | |
539e75ad L |
2766 | |
2767 | if (addr_prefix_disp != -1) | |
2768 | i.tm.operand_types[addr_prefix_disp] | |
2769 | = operand_types[addr_prefix_disp]; | |
2770 | ||
29b0f896 AM |
2771 | if (found_reverse_match) |
2772 | { | |
2773 | /* If we found a reverse match we must alter the opcode | |
2774 | direction bit. found_reverse_match holds bits to change | |
2775 | (different for int & float insns). */ | |
2776 | ||
2777 | i.tm.base_opcode ^= found_reverse_match; | |
2778 | ||
539e75ad L |
2779 | i.tm.operand_types[0] = operand_types[1]; |
2780 | i.tm.operand_types[1] = operand_types[0]; | |
29b0f896 AM |
2781 | } |
2782 | ||
2783 | return 1; | |
2784 | } | |
2785 | ||
2786 | static int | |
e3bb37b5 | 2787 | check_string (void) |
29b0f896 AM |
2788 | { |
2789 | int mem_op = (i.types[0] & AnyMem) ? 0 : 1; | |
2790 | if ((i.tm.operand_types[mem_op] & EsSeg) != 0) | |
2791 | { | |
2792 | if (i.seg[0] != NULL && i.seg[0] != &es) | |
2793 | { | |
2794 | as_bad (_("`%s' operand %d must use `%%es' segment"), | |
2795 | i.tm.name, | |
2796 | mem_op + 1); | |
2797 | return 0; | |
2798 | } | |
2799 | /* There's only ever one segment override allowed per instruction. | |
2800 | This instruction possibly has a legal segment override on the | |
2801 | second operand, so copy the segment to where non-string | |
2802 | instructions store it, allowing common code. */ | |
2803 | i.seg[0] = i.seg[1]; | |
2804 | } | |
2805 | else if ((i.tm.operand_types[mem_op + 1] & EsSeg) != 0) | |
2806 | { | |
2807 | if (i.seg[1] != NULL && i.seg[1] != &es) | |
2808 | { | |
2809 | as_bad (_("`%s' operand %d must use `%%es' segment"), | |
2810 | i.tm.name, | |
2811 | mem_op + 2); | |
2812 | return 0; | |
2813 | } | |
2814 | } | |
2815 | return 1; | |
2816 | } | |
2817 | ||
2818 | static int | |
543613e9 | 2819 | process_suffix (void) |
29b0f896 AM |
2820 | { |
2821 | /* If matched instruction specifies an explicit instruction mnemonic | |
2822 | suffix, use it. */ | |
2823 | if (i.tm.opcode_modifier & (Size16 | Size32 | Size64)) | |
2824 | { | |
2825 | if (i.tm.opcode_modifier & Size16) | |
2826 | i.suffix = WORD_MNEM_SUFFIX; | |
2827 | else if (i.tm.opcode_modifier & Size64) | |
2828 | i.suffix = QWORD_MNEM_SUFFIX; | |
2829 | else | |
2830 | i.suffix = LONG_MNEM_SUFFIX; | |
2831 | } | |
2832 | else if (i.reg_operands) | |
2833 | { | |
2834 | /* If there's no instruction mnemonic suffix we try to invent one | |
2835 | based on register operands. */ | |
2836 | if (!i.suffix) | |
2837 | { | |
2838 | /* We take i.suffix from the last register operand specified, | |
2839 | Destination register type is more significant than source | |
381d071f L |
2840 | register type. crc32 in SSE4.2 prefers source register |
2841 | type. */ | |
2842 | if (i.tm.base_opcode == 0xf20f38f1) | |
2843 | { | |
2844 | if ((i.types[0] & Reg)) | |
2845 | i.suffix = ((i.types[0] & Reg16) ? WORD_MNEM_SUFFIX : | |
29b0f896 | 2846 | LONG_MNEM_SUFFIX); |
381d071f | 2847 | } |
9344ff29 | 2848 | else if (i.tm.base_opcode == 0xf20f38f0) |
20592a94 L |
2849 | { |
2850 | if ((i.types[0] & Reg8)) | |
2851 | i.suffix = BYTE_MNEM_SUFFIX; | |
2852 | } | |
381d071f L |
2853 | |
2854 | if (!i.suffix) | |
2855 | { | |
2856 | int op; | |
2857 | ||
20592a94 L |
2858 | if (i.tm.base_opcode == 0xf20f38f1 |
2859 | || i.tm.base_opcode == 0xf20f38f0) | |
2860 | { | |
2861 | /* We have to know the operand size for crc32. */ | |
2862 | as_bad (_("ambiguous memory operand size for `%s`"), | |
2863 | i.tm.name); | |
2864 | return 0; | |
2865 | } | |
2866 | ||
381d071f L |
2867 | for (op = i.operands; --op >= 0;) |
2868 | if ((i.types[op] & Reg) | |
2869 | && !(i.tm.operand_types[op] & InOutPortReg)) | |
2870 | { | |
2871 | i.suffix = ((i.types[op] & Reg8) ? BYTE_MNEM_SUFFIX : | |
2872 | (i.types[op] & Reg16) ? WORD_MNEM_SUFFIX : | |
2873 | (i.types[op] & Reg64) ? QWORD_MNEM_SUFFIX : | |
2874 | LONG_MNEM_SUFFIX); | |
2875 | break; | |
2876 | } | |
2877 | } | |
29b0f896 AM |
2878 | } |
2879 | else if (i.suffix == BYTE_MNEM_SUFFIX) | |
2880 | { | |
2881 | if (!check_byte_reg ()) | |
2882 | return 0; | |
2883 | } | |
2884 | else if (i.suffix == LONG_MNEM_SUFFIX) | |
2885 | { | |
2886 | if (!check_long_reg ()) | |
2887 | return 0; | |
2888 | } | |
2889 | else if (i.suffix == QWORD_MNEM_SUFFIX) | |
2890 | { | |
2891 | if (!check_qword_reg ()) | |
2892 | return 0; | |
2893 | } | |
2894 | else if (i.suffix == WORD_MNEM_SUFFIX) | |
2895 | { | |
2896 | if (!check_word_reg ()) | |
2897 | return 0; | |
2898 | } | |
2899 | else if (intel_syntax && (i.tm.opcode_modifier & IgnoreSize)) | |
2900 | /* Do nothing if the instruction is going to ignore the prefix. */ | |
2901 | ; | |
2902 | else | |
2903 | abort (); | |
2904 | } | |
9306ca4a JB |
2905 | else if ((i.tm.opcode_modifier & DefaultSize) |
2906 | && !i.suffix | |
2907 | /* exclude fldenv/frstor/fsave/fstenv */ | |
2908 | && (i.tm.opcode_modifier & No_sSuf)) | |
29b0f896 AM |
2909 | { |
2910 | i.suffix = stackop_size; | |
2911 | } | |
9306ca4a JB |
2912 | else if (intel_syntax |
2913 | && !i.suffix | |
2914 | && ((i.tm.operand_types[0] & JumpAbsolute) | |
64e74474 AM |
2915 | || (i.tm.opcode_modifier & (JumpByte|JumpInterSegment)) |
2916 | || (i.tm.base_opcode == 0x0f01 /* [ls][gi]dt */ | |
2917 | && i.tm.extension_opcode <= 3))) | |
9306ca4a JB |
2918 | { |
2919 | switch (flag_code) | |
2920 | { | |
2921 | case CODE_64BIT: | |
2922 | if (!(i.tm.opcode_modifier & No_qSuf)) | |
2923 | { | |
2924 | i.suffix = QWORD_MNEM_SUFFIX; | |
2925 | break; | |
2926 | } | |
2927 | case CODE_32BIT: | |
2928 | if (!(i.tm.opcode_modifier & No_lSuf)) | |
2929 | i.suffix = LONG_MNEM_SUFFIX; | |
2930 | break; | |
2931 | case CODE_16BIT: | |
2932 | if (!(i.tm.opcode_modifier & No_wSuf)) | |
2933 | i.suffix = WORD_MNEM_SUFFIX; | |
2934 | break; | |
2935 | } | |
2936 | } | |
252b5132 | 2937 | |
9306ca4a | 2938 | if (!i.suffix) |
29b0f896 | 2939 | { |
9306ca4a JB |
2940 | if (!intel_syntax) |
2941 | { | |
2942 | if (i.tm.opcode_modifier & W) | |
2943 | { | |
4eed87de AM |
2944 | as_bad (_("no instruction mnemonic suffix given and " |
2945 | "no register operands; can't size instruction")); | |
9306ca4a JB |
2946 | return 0; |
2947 | } | |
2948 | } | |
2949 | else | |
2950 | { | |
64e74474 AM |
2951 | unsigned int suffixes = (~i.tm.opcode_modifier |
2952 | & (No_bSuf | |
2953 | | No_wSuf | |
2954 | | No_lSuf | |
2955 | | No_sSuf | |
2956 | | No_xSuf | |
2957 | | No_qSuf)); | |
9306ca4a JB |
2958 | |
2959 | if ((i.tm.opcode_modifier & W) | |
2960 | || ((suffixes & (suffixes - 1)) | |
2961 | && !(i.tm.opcode_modifier & (DefaultSize | IgnoreSize)))) | |
2962 | { | |
2963 | as_bad (_("ambiguous operand size for `%s'"), i.tm.name); | |
2964 | return 0; | |
2965 | } | |
2966 | } | |
29b0f896 | 2967 | } |
252b5132 | 2968 | |
9306ca4a JB |
2969 | /* Change the opcode based on the operand size given by i.suffix; |
2970 | We don't need to change things for byte insns. */ | |
2971 | ||
29b0f896 AM |
2972 | if (i.suffix && i.suffix != BYTE_MNEM_SUFFIX) |
2973 | { | |
2974 | /* It's not a byte, select word/dword operation. */ | |
2975 | if (i.tm.opcode_modifier & W) | |
2976 | { | |
2977 | if (i.tm.opcode_modifier & ShortForm) | |
2978 | i.tm.base_opcode |= 8; | |
2979 | else | |
2980 | i.tm.base_opcode |= 1; | |
2981 | } | |
0f3f3d8b | 2982 | |
29b0f896 AM |
2983 | /* Now select between word & dword operations via the operand |
2984 | size prefix, except for instructions that will ignore this | |
2985 | prefix anyway. */ | |
cb712a9e L |
2986 | if (i.tm.base_opcode == 0x0f01 && i.tm.extension_opcode == 0xc8) |
2987 | { | |
2988 | /* monitor in SSE3 is a very special case. The default size | |
2989 | of AX is the size of mode. The address size override | |
2990 | prefix will change the size of AX. */ | |
2991 | if (i.op->regs[0].reg_type & | |
2992 | (flag_code == CODE_32BIT ? Reg16 : Reg32)) | |
2993 | if (!add_prefix (ADDR_PREFIX_OPCODE)) | |
2994 | return 0; | |
2995 | } | |
2996 | else if (i.suffix != QWORD_MNEM_SUFFIX | |
2997 | && i.suffix != LONG_DOUBLE_MNEM_SUFFIX | |
2998 | && !(i.tm.opcode_modifier & (IgnoreSize | FloatMF)) | |
2999 | && ((i.suffix == LONG_MNEM_SUFFIX) == (flag_code == CODE_16BIT) | |
3000 | || (flag_code == CODE_64BIT | |
3001 | && (i.tm.opcode_modifier & JumpByte)))) | |
24eab124 AM |
3002 | { |
3003 | unsigned int prefix = DATA_PREFIX_OPCODE; | |
543613e9 | 3004 | |
29b0f896 AM |
3005 | if (i.tm.opcode_modifier & JumpByte) /* jcxz, loop */ |
3006 | prefix = ADDR_PREFIX_OPCODE; | |
252b5132 | 3007 | |
29b0f896 AM |
3008 | if (!add_prefix (prefix)) |
3009 | return 0; | |
24eab124 | 3010 | } |
252b5132 | 3011 | |
29b0f896 AM |
3012 | /* Set mode64 for an operand. */ |
3013 | if (i.suffix == QWORD_MNEM_SUFFIX | |
9146926a | 3014 | && flag_code == CODE_64BIT |
29b0f896 | 3015 | && (i.tm.opcode_modifier & NoRex64) == 0) |
46e883c5 L |
3016 | { |
3017 | /* Special case for xchg %rax,%rax. It is NOP and doesn't | |
3018 | need rex64. */ | |
3019 | if (i.operands != 2 | |
3020 | || i.types [0] != (Acc | Reg64) | |
3021 | || i.types [1] != (Acc | Reg64) | |
13a1e313 | 3022 | || i.tm.base_opcode != 0x90) |
f6bee062 | 3023 | i.rex |= REX_W; |
46e883c5 | 3024 | } |
3e73aa7c | 3025 | |
29b0f896 AM |
3026 | /* Size floating point instruction. */ |
3027 | if (i.suffix == LONG_MNEM_SUFFIX) | |
543613e9 NC |
3028 | if (i.tm.opcode_modifier & FloatMF) |
3029 | i.tm.base_opcode ^= 4; | |
29b0f896 | 3030 | } |
7ecd2f8b | 3031 | |
29b0f896 AM |
3032 | return 1; |
3033 | } | |
3e73aa7c | 3034 | |
29b0f896 | 3035 | static int |
543613e9 | 3036 | check_byte_reg (void) |
29b0f896 AM |
3037 | { |
3038 | int op; | |
543613e9 | 3039 | |
29b0f896 AM |
3040 | for (op = i.operands; --op >= 0;) |
3041 | { | |
3042 | /* If this is an eight bit register, it's OK. If it's the 16 or | |
3043 | 32 bit version of an eight bit register, we will just use the | |
3044 | low portion, and that's OK too. */ | |
3045 | if (i.types[op] & Reg8) | |
3046 | continue; | |
3047 | ||
3048 | /* movzx and movsx should not generate this warning. */ | |
3049 | if (intel_syntax | |
3050 | && (i.tm.base_opcode == 0xfb7 | |
3051 | || i.tm.base_opcode == 0xfb6 | |
3052 | || i.tm.base_opcode == 0x63 | |
3053 | || i.tm.base_opcode == 0xfbe | |
3054 | || i.tm.base_opcode == 0xfbf)) | |
3055 | continue; | |
3056 | ||
9344ff29 L |
3057 | /* crc32 doesn't generate this warning. */ |
3058 | if (i.tm.base_opcode == 0xf20f38f0) | |
3059 | continue; | |
3060 | ||
65ec77d2 | 3061 | if ((i.types[op] & WordReg) && i.op[op].regs->reg_num < 4) |
29b0f896 AM |
3062 | { |
3063 | /* Prohibit these changes in the 64bit mode, since the | |
3064 | lowering is more complicated. */ | |
3065 | if (flag_code == CODE_64BIT | |
3066 | && (i.tm.operand_types[op] & InOutPortReg) == 0) | |
3067 | { | |
2ca3ace5 L |
3068 | as_bad (_("Incorrect register `%s%s' used with `%c' suffix"), |
3069 | register_prefix, i.op[op].regs->reg_name, | |
29b0f896 AM |
3070 | i.suffix); |
3071 | return 0; | |
3072 | } | |
3073 | #if REGISTER_WARNINGS | |
3074 | if (!quiet_warnings | |
3075 | && (i.tm.operand_types[op] & InOutPortReg) == 0) | |
a540244d L |
3076 | as_warn (_("using `%s%s' instead of `%s%s' due to `%c' suffix"), |
3077 | register_prefix, | |
29b0f896 AM |
3078 | (i.op[op].regs + (i.types[op] & Reg16 |
3079 | ? REGNAM_AL - REGNAM_AX | |
3080 | : REGNAM_AL - REGNAM_EAX))->reg_name, | |
a540244d | 3081 | register_prefix, |
29b0f896 AM |
3082 | i.op[op].regs->reg_name, |
3083 | i.suffix); | |
3084 | #endif | |
3085 | continue; | |
3086 | } | |
3087 | /* Any other register is bad. */ | |
3088 | if (i.types[op] & (Reg | RegMMX | RegXMM | |
3089 | | SReg2 | SReg3 | |
3090 | | Control | Debug | Test | |
3091 | | FloatReg | FloatAcc)) | |
3092 | { | |
a540244d L |
3093 | as_bad (_("`%s%s' not allowed with `%s%c'"), |
3094 | register_prefix, | |
29b0f896 AM |
3095 | i.op[op].regs->reg_name, |
3096 | i.tm.name, | |
3097 | i.suffix); | |
3098 | return 0; | |
3099 | } | |
3100 | } | |
3101 | return 1; | |
3102 | } | |
3103 | ||
3104 | static int | |
e3bb37b5 | 3105 | check_long_reg (void) |
29b0f896 AM |
3106 | { |
3107 | int op; | |
3108 | ||
3109 | for (op = i.operands; --op >= 0;) | |
3110 | /* Reject eight bit registers, except where the template requires | |
3111 | them. (eg. movzb) */ | |
3112 | if ((i.types[op] & Reg8) != 0 | |
3113 | && (i.tm.operand_types[op] & (Reg16 | Reg32 | Acc)) != 0) | |
3114 | { | |
a540244d L |
3115 | as_bad (_("`%s%s' not allowed with `%s%c'"), |
3116 | register_prefix, | |
29b0f896 AM |
3117 | i.op[op].regs->reg_name, |
3118 | i.tm.name, | |
3119 | i.suffix); | |
3120 | return 0; | |
3121 | } | |
3122 | /* Warn if the e prefix on a general reg is missing. */ | |
3123 | else if ((!quiet_warnings || flag_code == CODE_64BIT) | |
3124 | && (i.types[op] & Reg16) != 0 | |
3125 | && (i.tm.operand_types[op] & (Reg32 | Acc)) != 0) | |
3126 | { | |
3127 | /* Prohibit these changes in the 64bit mode, since the | |
3128 | lowering is more complicated. */ | |
3129 | if (flag_code == CODE_64BIT) | |
252b5132 | 3130 | { |
2ca3ace5 L |
3131 | as_bad (_("Incorrect register `%s%s' used with `%c' suffix"), |
3132 | register_prefix, i.op[op].regs->reg_name, | |
29b0f896 AM |
3133 | i.suffix); |
3134 | return 0; | |
252b5132 | 3135 | } |
29b0f896 AM |
3136 | #if REGISTER_WARNINGS |
3137 | else | |
a540244d L |
3138 | as_warn (_("using `%s%s' instead of `%s%s' due to `%c' suffix"), |
3139 | register_prefix, | |
29b0f896 | 3140 | (i.op[op].regs + REGNAM_EAX - REGNAM_AX)->reg_name, |
a540244d | 3141 | register_prefix, |
29b0f896 AM |
3142 | i.op[op].regs->reg_name, |
3143 | i.suffix); | |
3144 | #endif | |
252b5132 | 3145 | } |
29b0f896 AM |
3146 | /* Warn if the r prefix on a general reg is missing. */ |
3147 | else if ((i.types[op] & Reg64) != 0 | |
3148 | && (i.tm.operand_types[op] & (Reg32 | Acc)) != 0) | |
252b5132 | 3149 | { |
2ca3ace5 L |
3150 | as_bad (_("Incorrect register `%s%s' used with `%c' suffix"), |
3151 | register_prefix, i.op[op].regs->reg_name, | |
29b0f896 AM |
3152 | i.suffix); |
3153 | return 0; | |
3154 | } | |
3155 | return 1; | |
3156 | } | |
252b5132 | 3157 | |
29b0f896 | 3158 | static int |
e3bb37b5 | 3159 | check_qword_reg (void) |
29b0f896 AM |
3160 | { |
3161 | int op; | |
252b5132 | 3162 | |
29b0f896 AM |
3163 | for (op = i.operands; --op >= 0; ) |
3164 | /* Reject eight bit registers, except where the template requires | |
3165 | them. (eg. movzb) */ | |
3166 | if ((i.types[op] & Reg8) != 0 | |
3167 | && (i.tm.operand_types[op] & (Reg16 | Reg32 | Acc)) != 0) | |
3168 | { | |
a540244d L |
3169 | as_bad (_("`%s%s' not allowed with `%s%c'"), |
3170 | register_prefix, | |
29b0f896 AM |
3171 | i.op[op].regs->reg_name, |
3172 | i.tm.name, | |
3173 | i.suffix); | |
3174 | return 0; | |
3175 | } | |
3176 | /* Warn if the e prefix on a general reg is missing. */ | |
3177 | else if (((i.types[op] & Reg16) != 0 | |
3178 | || (i.types[op] & Reg32) != 0) | |
3179 | && (i.tm.operand_types[op] & (Reg32 | Acc)) != 0) | |
3180 | { | |
3181 | /* Prohibit these changes in the 64bit mode, since the | |
3182 | lowering is more complicated. */ | |
2ca3ace5 L |
3183 | as_bad (_("Incorrect register `%s%s' used with `%c' suffix"), |
3184 | register_prefix, i.op[op].regs->reg_name, | |
29b0f896 AM |
3185 | i.suffix); |
3186 | return 0; | |
252b5132 | 3187 | } |
29b0f896 AM |
3188 | return 1; |
3189 | } | |
252b5132 | 3190 | |
29b0f896 | 3191 | static int |
e3bb37b5 | 3192 | check_word_reg (void) |
29b0f896 AM |
3193 | { |
3194 | int op; | |
3195 | for (op = i.operands; --op >= 0;) | |
3196 | /* Reject eight bit registers, except where the template requires | |
3197 | them. (eg. movzb) */ | |
3198 | if ((i.types[op] & Reg8) != 0 | |
3199 | && (i.tm.operand_types[op] & (Reg16 | Reg32 | Acc)) != 0) | |
3200 | { | |
a540244d L |
3201 | as_bad (_("`%s%s' not allowed with `%s%c'"), |
3202 | register_prefix, | |
29b0f896 AM |
3203 | i.op[op].regs->reg_name, |
3204 | i.tm.name, | |
3205 | i.suffix); | |
3206 | return 0; | |
3207 | } | |
3208 | /* Warn if the e prefix on a general reg is present. */ | |
3209 | else if ((!quiet_warnings || flag_code == CODE_64BIT) | |
3210 | && (i.types[op] & Reg32) != 0 | |
3211 | && (i.tm.operand_types[op] & (Reg16 | Acc)) != 0) | |
252b5132 | 3212 | { |
29b0f896 AM |
3213 | /* Prohibit these changes in the 64bit mode, since the |
3214 | lowering is more complicated. */ | |
3215 | if (flag_code == CODE_64BIT) | |
252b5132 | 3216 | { |
2ca3ace5 L |
3217 | as_bad (_("Incorrect register `%s%s' used with `%c' suffix"), |
3218 | register_prefix, i.op[op].regs->reg_name, | |
29b0f896 AM |
3219 | i.suffix); |
3220 | return 0; | |
252b5132 | 3221 | } |
29b0f896 AM |
3222 | else |
3223 | #if REGISTER_WARNINGS | |
a540244d L |
3224 | as_warn (_("using `%s%s' instead of `%s%s' due to `%c' suffix"), |
3225 | register_prefix, | |
29b0f896 | 3226 | (i.op[op].regs + REGNAM_AX - REGNAM_EAX)->reg_name, |
a540244d | 3227 | register_prefix, |
29b0f896 AM |
3228 | i.op[op].regs->reg_name, |
3229 | i.suffix); | |
3230 | #endif | |
3231 | } | |
3232 | return 1; | |
3233 | } | |
252b5132 | 3234 | |
29b0f896 | 3235 | static int |
e3bb37b5 | 3236 | finalize_imm (void) |
29b0f896 AM |
3237 | { |
3238 | unsigned int overlap0, overlap1, overlap2; | |
3239 | ||
3240 | overlap0 = i.types[0] & i.tm.operand_types[0]; | |
20f0a1fc | 3241 | if ((overlap0 & (Imm8 | Imm8S | Imm16 | Imm32 | Imm32S | Imm64)) |
29b0f896 AM |
3242 | && overlap0 != Imm8 && overlap0 != Imm8S |
3243 | && overlap0 != Imm16 && overlap0 != Imm32S | |
3244 | && overlap0 != Imm32 && overlap0 != Imm64) | |
3245 | { | |
3246 | if (i.suffix) | |
3247 | { | |
3248 | overlap0 &= (i.suffix == BYTE_MNEM_SUFFIX | |
3249 | ? Imm8 | Imm8S | |
3250 | : (i.suffix == WORD_MNEM_SUFFIX | |
3251 | ? Imm16 | |
3252 | : (i.suffix == QWORD_MNEM_SUFFIX | |
3253 | ? Imm64 | Imm32S | |
3254 | : Imm32))); | |
3255 | } | |
3256 | else if (overlap0 == (Imm16 | Imm32S | Imm32) | |
3257 | || overlap0 == (Imm16 | Imm32) | |
3258 | || overlap0 == (Imm16 | Imm32S)) | |
3259 | { | |
3260 | overlap0 = ((flag_code == CODE_16BIT) ^ (i.prefix[DATA_PREFIX] != 0) | |
3261 | ? Imm16 : Imm32S); | |
3262 | } | |
3263 | if (overlap0 != Imm8 && overlap0 != Imm8S | |
3264 | && overlap0 != Imm16 && overlap0 != Imm32S | |
3265 | && overlap0 != Imm32 && overlap0 != Imm64) | |
3266 | { | |
4eed87de AM |
3267 | as_bad (_("no instruction mnemonic suffix given; " |
3268 | "can't determine immediate size")); | |
29b0f896 AM |
3269 | return 0; |
3270 | } | |
3271 | } | |
3272 | i.types[0] = overlap0; | |
3273 | ||
3274 | overlap1 = i.types[1] & i.tm.operand_types[1]; | |
37edbb65 | 3275 | if ((overlap1 & (Imm8 | Imm8S | Imm16 | Imm32S | Imm32 | Imm64)) |
29b0f896 AM |
3276 | && overlap1 != Imm8 && overlap1 != Imm8S |
3277 | && overlap1 != Imm16 && overlap1 != Imm32S | |
3278 | && overlap1 != Imm32 && overlap1 != Imm64) | |
3279 | { | |
3280 | if (i.suffix) | |
3281 | { | |
3282 | overlap1 &= (i.suffix == BYTE_MNEM_SUFFIX | |
3283 | ? Imm8 | Imm8S | |
3284 | : (i.suffix == WORD_MNEM_SUFFIX | |
3285 | ? Imm16 | |
3286 | : (i.suffix == QWORD_MNEM_SUFFIX | |
3287 | ? Imm64 | Imm32S | |
3288 | : Imm32))); | |
3289 | } | |
3290 | else if (overlap1 == (Imm16 | Imm32 | Imm32S) | |
3291 | || overlap1 == (Imm16 | Imm32) | |
3292 | || overlap1 == (Imm16 | Imm32S)) | |
3293 | { | |
3294 | overlap1 = ((flag_code == CODE_16BIT) ^ (i.prefix[DATA_PREFIX] != 0) | |
3295 | ? Imm16 : Imm32S); | |
3296 | } | |
3297 | if (overlap1 != Imm8 && overlap1 != Imm8S | |
3298 | && overlap1 != Imm16 && overlap1 != Imm32S | |
3299 | && overlap1 != Imm32 && overlap1 != Imm64) | |
3300 | { | |
4eed87de AM |
3301 | as_bad (_("no instruction mnemonic suffix given; " |
3302 | "can't determine immediate size %x %c"), | |
3303 | overlap1, i.suffix); | |
29b0f896 AM |
3304 | return 0; |
3305 | } | |
3306 | } | |
3307 | i.types[1] = overlap1; | |
3308 | ||
3309 | overlap2 = i.types[2] & i.tm.operand_types[2]; | |
3310 | assert ((overlap2 & Imm) == 0); | |
3311 | i.types[2] = overlap2; | |
3312 | ||
3313 | return 1; | |
3314 | } | |
3315 | ||
3316 | static int | |
e3bb37b5 | 3317 | process_operands (void) |
29b0f896 AM |
3318 | { |
3319 | /* Default segment register this instruction will use for memory | |
3320 | accesses. 0 means unknown. This is only for optimizing out | |
3321 | unnecessary segment overrides. */ | |
3322 | const seg_entry *default_seg = 0; | |
3323 | ||
3324 | /* The imul $imm, %reg instruction is converted into | |
3325 | imul $imm, %reg, %reg, and the clr %reg instruction | |
3326 | is converted into xor %reg, %reg. */ | |
3327 | if (i.tm.opcode_modifier & regKludge) | |
3328 | { | |
42903f7f L |
3329 | if ((i.tm.cpu_flags & CpuSSE4_1)) |
3330 | { | |
3331 | /* The first operand in instruction blendvpd, blendvps and | |
3332 | pblendvb in SSE4.1 is implicit and must be xmm0. */ | |
3333 | assert (i.operands == 3 | |
3334 | && i.reg_operands >= 2 | |
3335 | && i.types[0] == RegXMM); | |
3336 | if (i.op[0].regs->reg_num != 0) | |
3337 | { | |
3338 | if (intel_syntax) | |
3339 | as_bad (_("the last operand of `%s' must be `%sxmm0'"), | |
3340 | i.tm.name, register_prefix); | |
3341 | else | |
3342 | as_bad (_("the first operand of `%s' must be `%sxmm0'"), | |
3343 | i.tm.name, register_prefix); | |
3344 | return 0; | |
3345 | } | |
3346 | i.op[0] = i.op[1]; | |
3347 | i.op[1] = i.op[2]; | |
3348 | i.types[0] = i.types[1]; | |
3349 | i.types[1] = i.types[2]; | |
3350 | i.operands--; | |
3351 | i.reg_operands--; | |
3352 | ||
3353 | /* We need to adjust fields in i.tm since they are used by | |
3354 | build_modrm_byte. */ | |
3355 | i.tm.operand_types [0] = i.tm.operand_types [1]; | |
3356 | i.tm.operand_types [1] = i.tm.operand_types [2]; | |
3357 | i.tm.operands--; | |
3358 | } | |
3359 | else | |
3360 | { | |
3361 | unsigned int first_reg_op = (i.types[0] & Reg) ? 0 : 1; | |
3362 | /* Pretend we saw the extra register operand. */ | |
3363 | assert (i.reg_operands == 1 | |
3364 | && i.op[first_reg_op + 1].regs == 0); | |
3365 | i.op[first_reg_op + 1].regs = i.op[first_reg_op].regs; | |
3366 | i.types[first_reg_op + 1] = i.types[first_reg_op]; | |
3367 | i.operands++; | |
3368 | i.reg_operands++; | |
3369 | } | |
29b0f896 AM |
3370 | } |
3371 | ||
3372 | if (i.tm.opcode_modifier & ShortForm) | |
3373 | { | |
4eed87de | 3374 | if (i.types[0] & (SReg2 | SReg3)) |
29b0f896 | 3375 | { |
4eed87de AM |
3376 | if (i.tm.base_opcode == POP_SEG_SHORT |
3377 | && i.op[0].regs->reg_num == 1) | |
29b0f896 | 3378 | { |
4eed87de AM |
3379 | as_bad (_("you can't `pop %%cs'")); |
3380 | return 0; | |
29b0f896 | 3381 | } |
4eed87de AM |
3382 | i.tm.base_opcode |= (i.op[0].regs->reg_num << 3); |
3383 | if ((i.op[0].regs->reg_flags & RegRex) != 0) | |
161a04f6 | 3384 | i.rex |= REX_B; |
4eed87de AM |
3385 | } |
3386 | else | |
3387 | { | |
3388 | /* The register or float register operand is in operand 0 or 1. */ | |
3389 | unsigned int op = (i.types[0] & (Reg | FloatReg)) ? 0 : 1; | |
3390 | /* Register goes in low 3 bits of opcode. */ | |
3391 | i.tm.base_opcode |= i.op[op].regs->reg_num; | |
3392 | if ((i.op[op].regs->reg_flags & RegRex) != 0) | |
161a04f6 | 3393 | i.rex |= REX_B; |
4eed87de | 3394 | if (!quiet_warnings && (i.tm.opcode_modifier & Ugh) != 0) |
29b0f896 | 3395 | { |
4eed87de AM |
3396 | /* Warn about some common errors, but press on regardless. |
3397 | The first case can be generated by gcc (<= 2.8.1). */ | |
3398 | if (i.operands == 2) | |
3399 | { | |
3400 | /* Reversed arguments on faddp, fsubp, etc. */ | |
a540244d L |
3401 | as_warn (_("translating to `%s %s%s,%s%s'"), i.tm.name, |
3402 | register_prefix, i.op[1].regs->reg_name, | |
3403 | register_prefix, i.op[0].regs->reg_name); | |
4eed87de AM |
3404 | } |
3405 | else | |
3406 | { | |
3407 | /* Extraneous `l' suffix on fp insn. */ | |
a540244d L |
3408 | as_warn (_("translating to `%s %s%s'"), i.tm.name, |
3409 | register_prefix, i.op[0].regs->reg_name); | |
4eed87de | 3410 | } |
29b0f896 AM |
3411 | } |
3412 | } | |
3413 | } | |
3414 | else if (i.tm.opcode_modifier & Modrm) | |
3415 | { | |
3416 | /* The opcode is completed (modulo i.tm.extension_opcode which | |
52271982 AM |
3417 | must be put into the modrm byte). Now, we make the modrm and |
3418 | index base bytes based on all the info we've collected. */ | |
29b0f896 AM |
3419 | |
3420 | default_seg = build_modrm_byte (); | |
3421 | } | |
8a2ed489 | 3422 | else if ((i.tm.base_opcode & ~0x3) == MOV_AX_DISP32) |
29b0f896 AM |
3423 | { |
3424 | default_seg = &ds; | |
3425 | } | |
3426 | else if ((i.tm.opcode_modifier & IsString) != 0) | |
3427 | { | |
3428 | /* For the string instructions that allow a segment override | |
3429 | on one of their operands, the default segment is ds. */ | |
3430 | default_seg = &ds; | |
3431 | } | |
3432 | ||
30123838 JB |
3433 | if ((i.tm.base_opcode == 0x8d /* lea */ |
3434 | || (i.tm.cpu_flags & CpuSVME)) | |
3435 | && i.seg[0] && !quiet_warnings) | |
3436 | as_warn (_("segment override on `%s' is ineffectual"), i.tm.name); | |
52271982 AM |
3437 | |
3438 | /* If a segment was explicitly specified, and the specified segment | |
3439 | is not the default, use an opcode prefix to select it. If we | |
3440 | never figured out what the default segment is, then default_seg | |
3441 | will be zero at this point, and the specified segment prefix will | |
3442 | always be used. */ | |
29b0f896 AM |
3443 | if ((i.seg[0]) && (i.seg[0] != default_seg)) |
3444 | { | |
3445 | if (!add_prefix (i.seg[0]->seg_prefix)) | |
3446 | return 0; | |
3447 | } | |
3448 | return 1; | |
3449 | } | |
3450 | ||
3451 | static const seg_entry * | |
e3bb37b5 | 3452 | build_modrm_byte (void) |
29b0f896 AM |
3453 | { |
3454 | const seg_entry *default_seg = 0; | |
3455 | ||
3456 | /* i.reg_operands MUST be the number of real register operands; | |
3457 | implicit registers do not count. */ | |
3458 | if (i.reg_operands == 2) | |
3459 | { | |
3460 | unsigned int source, dest; | |
cab737b9 L |
3461 | |
3462 | switch (i.operands) | |
3463 | { | |
3464 | case 2: | |
3465 | source = 0; | |
3466 | break; | |
3467 | case 3: | |
c81128dc L |
3468 | /* When there are 3 operands, one of them may be immediate, |
3469 | which may be the first or the last operand. Otherwise, | |
3470 | the first operand must be shift count register (cl). */ | |
3471 | assert (i.imm_operands == 1 | |
3472 | || (i.imm_operands == 0 | |
3473 | && (i.types[0] & ShiftCount))); | |
3474 | source = (i.types[0] & (Imm | ShiftCount)) ? 1 : 0; | |
cab737b9 L |
3475 | break; |
3476 | case 4: | |
3477 | /* When there are 4 operands, the first two must be immediate | |
3478 | operands. The source operand will be the 3rd one. */ | |
3479 | assert (i.imm_operands == 2 | |
3480 | && (i.types[0] & Imm) | |
3481 | && (i.types[1] & Imm)); | |
3482 | source = 2; | |
3483 | break; | |
3484 | default: | |
3485 | abort (); | |
3486 | } | |
3487 | ||
29b0f896 AM |
3488 | dest = source + 1; |
3489 | ||
3490 | i.rm.mode = 3; | |
3491 | /* One of the register operands will be encoded in the i.tm.reg | |
3492 | field, the other in the combined i.tm.mode and i.tm.regmem | |
3493 | fields. If no form of this instruction supports a memory | |
3494 | destination operand, then we assume the source operand may | |
3495 | sometimes be a memory operand and so we need to store the | |
3496 | destination in the i.rm.reg field. */ | |
e72cf3ec | 3497 | if ((i.tm.operand_types[dest] & (AnyMem | RegMem)) == 0) |
29b0f896 AM |
3498 | { |
3499 | i.rm.reg = i.op[dest].regs->reg_num; | |
3500 | i.rm.regmem = i.op[source].regs->reg_num; | |
3501 | if ((i.op[dest].regs->reg_flags & RegRex) != 0) | |
161a04f6 | 3502 | i.rex |= REX_R; |
29b0f896 | 3503 | if ((i.op[source].regs->reg_flags & RegRex) != 0) |
161a04f6 | 3504 | i.rex |= REX_B; |
29b0f896 AM |
3505 | } |
3506 | else | |
3507 | { | |
3508 | i.rm.reg = i.op[source].regs->reg_num; | |
3509 | i.rm.regmem = i.op[dest].regs->reg_num; | |
3510 | if ((i.op[dest].regs->reg_flags & RegRex) != 0) | |
161a04f6 | 3511 | i.rex |= REX_B; |
29b0f896 | 3512 | if ((i.op[source].regs->reg_flags & RegRex) != 0) |
161a04f6 | 3513 | i.rex |= REX_R; |
29b0f896 | 3514 | } |
161a04f6 | 3515 | if (flag_code != CODE_64BIT && (i.rex & (REX_R | REX_B))) |
c4a530c5 JB |
3516 | { |
3517 | if (!((i.types[0] | i.types[1]) & Control)) | |
3518 | abort (); | |
161a04f6 | 3519 | i.rex &= ~(REX_R | REX_B); |
c4a530c5 JB |
3520 | add_prefix (LOCK_PREFIX_OPCODE); |
3521 | } | |
29b0f896 AM |
3522 | } |
3523 | else | |
3524 | { /* If it's not 2 reg operands... */ | |
3525 | if (i.mem_operands) | |
3526 | { | |
3527 | unsigned int fake_zero_displacement = 0; | |
99018f42 | 3528 | unsigned int op; |
4eed87de | 3529 | |
99018f42 L |
3530 | for (op = 0; op < i.operands; op++) |
3531 | if ((i.types[op] & AnyMem)) | |
3532 | break; | |
3533 | assert (op < i.operands); | |
29b0f896 AM |
3534 | |
3535 | default_seg = &ds; | |
3536 | ||
3537 | if (i.base_reg == 0) | |
3538 | { | |
3539 | i.rm.mode = 0; | |
3540 | if (!i.disp_operands) | |
3541 | fake_zero_displacement = 1; | |
3542 | if (i.index_reg == 0) | |
3543 | { | |
3544 | /* Operand is just <disp> */ | |
20f0a1fc | 3545 | if (flag_code == CODE_64BIT) |
29b0f896 AM |
3546 | { |
3547 | /* 64bit mode overwrites the 32bit absolute | |
3548 | addressing by RIP relative addressing and | |
3549 | absolute addressing is encoded by one of the | |
3550 | redundant SIB forms. */ | |
3551 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
3552 | i.sib.base = NO_BASE_REGISTER; | |
3553 | i.sib.index = NO_INDEX_REGISTER; | |
fc225355 L |
3554 | i.types[op] = ((i.prefix[ADDR_PREFIX] == 0) |
3555 | ? Disp32S : Disp32); | |
20f0a1fc | 3556 | } |
fc225355 L |
3557 | else if ((flag_code == CODE_16BIT) |
3558 | ^ (i.prefix[ADDR_PREFIX] != 0)) | |
20f0a1fc NC |
3559 | { |
3560 | i.rm.regmem = NO_BASE_REGISTER_16; | |
3561 | i.types[op] = Disp16; | |
3562 | } | |
3563 | else | |
3564 | { | |
3565 | i.rm.regmem = NO_BASE_REGISTER; | |
3566 | i.types[op] = Disp32; | |
29b0f896 AM |
3567 | } |
3568 | } | |
3569 | else /* !i.base_reg && i.index_reg */ | |
3570 | { | |
3571 | i.sib.index = i.index_reg->reg_num; | |
3572 | i.sib.base = NO_BASE_REGISTER; | |
3573 | i.sib.scale = i.log2_scale_factor; | |
3574 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
3575 | i.types[op] &= ~Disp; | |
3576 | if (flag_code != CODE_64BIT) | |
3577 | i.types[op] |= Disp32; /* Must be 32 bit */ | |
3578 | else | |
3579 | i.types[op] |= Disp32S; | |
3580 | if ((i.index_reg->reg_flags & RegRex) != 0) | |
161a04f6 | 3581 | i.rex |= REX_X; |
29b0f896 AM |
3582 | } |
3583 | } | |
3584 | /* RIP addressing for 64bit mode. */ | |
3585 | else if (i.base_reg->reg_type == BaseIndex) | |
3586 | { | |
3587 | i.rm.regmem = NO_BASE_REGISTER; | |
20f0a1fc | 3588 | i.types[op] &= ~ Disp; |
29b0f896 | 3589 | i.types[op] |= Disp32S; |
71903a11 | 3590 | i.flags[op] |= Operand_PCrel; |
20f0a1fc NC |
3591 | if (! i.disp_operands) |
3592 | fake_zero_displacement = 1; | |
29b0f896 AM |
3593 | } |
3594 | else if (i.base_reg->reg_type & Reg16) | |
3595 | { | |
3596 | switch (i.base_reg->reg_num) | |
3597 | { | |
3598 | case 3: /* (%bx) */ | |
3599 | if (i.index_reg == 0) | |
3600 | i.rm.regmem = 7; | |
3601 | else /* (%bx,%si) -> 0, or (%bx,%di) -> 1 */ | |
3602 | i.rm.regmem = i.index_reg->reg_num - 6; | |
3603 | break; | |
3604 | case 5: /* (%bp) */ | |
3605 | default_seg = &ss; | |
3606 | if (i.index_reg == 0) | |
3607 | { | |
3608 | i.rm.regmem = 6; | |
3609 | if ((i.types[op] & Disp) == 0) | |
3610 | { | |
3611 | /* fake (%bp) into 0(%bp) */ | |
3612 | i.types[op] |= Disp8; | |
252b5132 | 3613 | fake_zero_displacement = 1; |
29b0f896 AM |
3614 | } |
3615 | } | |
3616 | else /* (%bp,%si) -> 2, or (%bp,%di) -> 3 */ | |
3617 | i.rm.regmem = i.index_reg->reg_num - 6 + 2; | |
3618 | break; | |
3619 | default: /* (%si) -> 4 or (%di) -> 5 */ | |
3620 | i.rm.regmem = i.base_reg->reg_num - 6 + 4; | |
3621 | } | |
3622 | i.rm.mode = mode_from_disp_size (i.types[op]); | |
3623 | } | |
3624 | else /* i.base_reg and 32/64 bit mode */ | |
3625 | { | |
3626 | if (flag_code == CODE_64BIT | |
3627 | && (i.types[op] & Disp)) | |
fc225355 L |
3628 | i.types[op] = ((i.types[op] & Disp8) |
3629 | | (i.prefix[ADDR_PREFIX] == 0 | |
3630 | ? Disp32S : Disp32)); | |
20f0a1fc | 3631 | |
29b0f896 AM |
3632 | i.rm.regmem = i.base_reg->reg_num; |
3633 | if ((i.base_reg->reg_flags & RegRex) != 0) | |
161a04f6 | 3634 | i.rex |= REX_B; |
29b0f896 AM |
3635 | i.sib.base = i.base_reg->reg_num; |
3636 | /* x86-64 ignores REX prefix bit here to avoid decoder | |
3637 | complications. */ | |
3638 | if ((i.base_reg->reg_num & 7) == EBP_REG_NUM) | |
3639 | { | |
3640 | default_seg = &ss; | |
3641 | if (i.disp_operands == 0) | |
3642 | { | |
3643 | fake_zero_displacement = 1; | |
3644 | i.types[op] |= Disp8; | |
3645 | } | |
3646 | } | |
3647 | else if (i.base_reg->reg_num == ESP_REG_NUM) | |
3648 | { | |
3649 | default_seg = &ss; | |
3650 | } | |
3651 | i.sib.scale = i.log2_scale_factor; | |
3652 | if (i.index_reg == 0) | |
3653 | { | |
3654 | /* <disp>(%esp) becomes two byte modrm with no index | |
3655 | register. We've already stored the code for esp | |
3656 | in i.rm.regmem ie. ESCAPE_TO_TWO_BYTE_ADDRESSING. | |
3657 | Any base register besides %esp will not use the | |
3658 | extra modrm byte. */ | |
3659 | i.sib.index = NO_INDEX_REGISTER; | |
3660 | #if !SCALE1_WHEN_NO_INDEX | |
3661 | /* Another case where we force the second modrm byte. */ | |
3662 | if (i.log2_scale_factor) | |
3663 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
252b5132 | 3664 | #endif |
29b0f896 AM |
3665 | } |
3666 | else | |
3667 | { | |
3668 | i.sib.index = i.index_reg->reg_num; | |
3669 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
3670 | if ((i.index_reg->reg_flags & RegRex) != 0) | |
161a04f6 | 3671 | i.rex |= REX_X; |
29b0f896 | 3672 | } |
67a4f2b7 AO |
3673 | |
3674 | if (i.disp_operands | |
3675 | && (i.reloc[op] == BFD_RELOC_386_TLS_DESC_CALL | |
3676 | || i.reloc[op] == BFD_RELOC_X86_64_TLSDESC_CALL)) | |
3677 | i.rm.mode = 0; | |
3678 | else | |
3679 | i.rm.mode = mode_from_disp_size (i.types[op]); | |
29b0f896 | 3680 | } |
252b5132 | 3681 | |
29b0f896 AM |
3682 | if (fake_zero_displacement) |
3683 | { | |
3684 | /* Fakes a zero displacement assuming that i.types[op] | |
3685 | holds the correct displacement size. */ | |
3686 | expressionS *exp; | |
3687 | ||
3688 | assert (i.op[op].disps == 0); | |
3689 | exp = &disp_expressions[i.disp_operands++]; | |
3690 | i.op[op].disps = exp; | |
3691 | exp->X_op = O_constant; | |
3692 | exp->X_add_number = 0; | |
3693 | exp->X_add_symbol = (symbolS *) 0; | |
3694 | exp->X_op_symbol = (symbolS *) 0; | |
3695 | } | |
3696 | } | |
252b5132 | 3697 | |
29b0f896 AM |
3698 | /* Fill in i.rm.reg or i.rm.regmem field with register operand |
3699 | (if any) based on i.tm.extension_opcode. Again, we must be | |
3700 | careful to make sure that segment/control/debug/test/MMX | |
3701 | registers are coded into the i.rm.reg field. */ | |
3702 | if (i.reg_operands) | |
3703 | { | |
99018f42 L |
3704 | unsigned int op; |
3705 | ||
3706 | for (op = 0; op < i.operands; op++) | |
3707 | if ((i.types[op] & (Reg | RegMMX | RegXMM | |
3708 | | SReg2 | SReg3 | |
3709 | | Control | Debug | Test))) | |
3710 | break; | |
3711 | assert (op < i.operands); | |
3712 | ||
29b0f896 AM |
3713 | /* If there is an extension opcode to put here, the register |
3714 | number must be put into the regmem field. */ | |
3715 | if (i.tm.extension_opcode != None) | |
3716 | { | |
3717 | i.rm.regmem = i.op[op].regs->reg_num; | |
3718 | if ((i.op[op].regs->reg_flags & RegRex) != 0) | |
161a04f6 | 3719 | i.rex |= REX_B; |
29b0f896 AM |
3720 | } |
3721 | else | |
3722 | { | |
3723 | i.rm.reg = i.op[op].regs->reg_num; | |
3724 | if ((i.op[op].regs->reg_flags & RegRex) != 0) | |
161a04f6 | 3725 | i.rex |= REX_R; |
29b0f896 | 3726 | } |
252b5132 | 3727 | |
29b0f896 AM |
3728 | /* Now, if no memory operand has set i.rm.mode = 0, 1, 2 we |
3729 | must set it to 3 to indicate this is a register operand | |
3730 | in the regmem field. */ | |
3731 | if (!i.mem_operands) | |
3732 | i.rm.mode = 3; | |
3733 | } | |
252b5132 | 3734 | |
29b0f896 AM |
3735 | /* Fill in i.rm.reg field with extension opcode (if any). */ |
3736 | if (i.tm.extension_opcode != None) | |
3737 | i.rm.reg = i.tm.extension_opcode; | |
3738 | } | |
3739 | return default_seg; | |
3740 | } | |
252b5132 | 3741 | |
29b0f896 | 3742 | static void |
e3bb37b5 | 3743 | output_branch (void) |
29b0f896 AM |
3744 | { |
3745 | char *p; | |
3746 | int code16; | |
3747 | int prefix; | |
3748 | relax_substateT subtype; | |
3749 | symbolS *sym; | |
3750 | offsetT off; | |
3751 | ||
3752 | code16 = 0; | |
3753 | if (flag_code == CODE_16BIT) | |
3754 | code16 = CODE16; | |
3755 | ||
3756 | prefix = 0; | |
3757 | if (i.prefix[DATA_PREFIX] != 0) | |
252b5132 | 3758 | { |
29b0f896 AM |
3759 | prefix = 1; |
3760 | i.prefixes -= 1; | |
3761 | code16 ^= CODE16; | |
252b5132 | 3762 | } |
29b0f896 AM |
3763 | /* Pentium4 branch hints. */ |
3764 | if (i.prefix[SEG_PREFIX] == CS_PREFIX_OPCODE /* not taken */ | |
3765 | || i.prefix[SEG_PREFIX] == DS_PREFIX_OPCODE /* taken */) | |
2f66722d | 3766 | { |
29b0f896 AM |
3767 | prefix++; |
3768 | i.prefixes--; | |
3769 | } | |
3770 | if (i.prefix[REX_PREFIX] != 0) | |
3771 | { | |
3772 | prefix++; | |
3773 | i.prefixes--; | |
2f66722d AM |
3774 | } |
3775 | ||
29b0f896 AM |
3776 | if (i.prefixes != 0 && !intel_syntax) |
3777 | as_warn (_("skipping prefixes on this instruction")); | |
3778 | ||
3779 | /* It's always a symbol; End frag & setup for relax. | |
3780 | Make sure there is enough room in this frag for the largest | |
3781 | instruction we may generate in md_convert_frag. This is 2 | |
3782 | bytes for the opcode and room for the prefix and largest | |
3783 | displacement. */ | |
3784 | frag_grow (prefix + 2 + 4); | |
3785 | /* Prefix and 1 opcode byte go in fr_fix. */ | |
3786 | p = frag_more (prefix + 1); | |
3787 | if (i.prefix[DATA_PREFIX] != 0) | |
3788 | *p++ = DATA_PREFIX_OPCODE; | |
3789 | if (i.prefix[SEG_PREFIX] == CS_PREFIX_OPCODE | |
3790 | || i.prefix[SEG_PREFIX] == DS_PREFIX_OPCODE) | |
3791 | *p++ = i.prefix[SEG_PREFIX]; | |
3792 | if (i.prefix[REX_PREFIX] != 0) | |
3793 | *p++ = i.prefix[REX_PREFIX]; | |
3794 | *p = i.tm.base_opcode; | |
3795 | ||
3796 | if ((unsigned char) *p == JUMP_PC_RELATIVE) | |
3797 | subtype = ENCODE_RELAX_STATE (UNCOND_JUMP, SMALL); | |
3798 | else if ((cpu_arch_flags & Cpu386) != 0) | |
3799 | subtype = ENCODE_RELAX_STATE (COND_JUMP, SMALL); | |
3800 | else | |
3801 | subtype = ENCODE_RELAX_STATE (COND_JUMP86, SMALL); | |
3802 | subtype |= code16; | |
3e73aa7c | 3803 | |
29b0f896 AM |
3804 | sym = i.op[0].disps->X_add_symbol; |
3805 | off = i.op[0].disps->X_add_number; | |
3e73aa7c | 3806 | |
29b0f896 AM |
3807 | if (i.op[0].disps->X_op != O_constant |
3808 | && i.op[0].disps->X_op != O_symbol) | |
3e73aa7c | 3809 | { |
29b0f896 AM |
3810 | /* Handle complex expressions. */ |
3811 | sym = make_expr_symbol (i.op[0].disps); | |
3812 | off = 0; | |
3813 | } | |
3e73aa7c | 3814 | |
29b0f896 AM |
3815 | /* 1 possible extra opcode + 4 byte displacement go in var part. |
3816 | Pass reloc in fr_var. */ | |
3817 | frag_var (rs_machine_dependent, 5, i.reloc[0], subtype, sym, off, p); | |
3818 | } | |
3e73aa7c | 3819 | |
29b0f896 | 3820 | static void |
e3bb37b5 | 3821 | output_jump (void) |
29b0f896 AM |
3822 | { |
3823 | char *p; | |
3824 | int size; | |
3e02c1cc | 3825 | fixS *fixP; |
29b0f896 AM |
3826 | |
3827 | if (i.tm.opcode_modifier & JumpByte) | |
3828 | { | |
3829 | /* This is a loop or jecxz type instruction. */ | |
3830 | size = 1; | |
3831 | if (i.prefix[ADDR_PREFIX] != 0) | |
3832 | { | |
3833 | FRAG_APPEND_1_CHAR (ADDR_PREFIX_OPCODE); | |
3834 | i.prefixes -= 1; | |
3835 | } | |
3836 | /* Pentium4 branch hints. */ | |
3837 | if (i.prefix[SEG_PREFIX] == CS_PREFIX_OPCODE /* not taken */ | |
3838 | || i.prefix[SEG_PREFIX] == DS_PREFIX_OPCODE /* taken */) | |
3839 | { | |
3840 | FRAG_APPEND_1_CHAR (i.prefix[SEG_PREFIX]); | |
3841 | i.prefixes--; | |
3e73aa7c JH |
3842 | } |
3843 | } | |
29b0f896 AM |
3844 | else |
3845 | { | |
3846 | int code16; | |
3e73aa7c | 3847 | |
29b0f896 AM |
3848 | code16 = 0; |
3849 | if (flag_code == CODE_16BIT) | |
3850 | code16 = CODE16; | |
3e73aa7c | 3851 | |
29b0f896 AM |
3852 | if (i.prefix[DATA_PREFIX] != 0) |
3853 | { | |
3854 | FRAG_APPEND_1_CHAR (DATA_PREFIX_OPCODE); | |
3855 | i.prefixes -= 1; | |
3856 | code16 ^= CODE16; | |
3857 | } | |
252b5132 | 3858 | |
29b0f896 AM |
3859 | size = 4; |
3860 | if (code16) | |
3861 | size = 2; | |
3862 | } | |
9fcc94b6 | 3863 | |
29b0f896 AM |
3864 | if (i.prefix[REX_PREFIX] != 0) |
3865 | { | |
3866 | FRAG_APPEND_1_CHAR (i.prefix[REX_PREFIX]); | |
3867 | i.prefixes -= 1; | |
3868 | } | |
252b5132 | 3869 | |
29b0f896 AM |
3870 | if (i.prefixes != 0 && !intel_syntax) |
3871 | as_warn (_("skipping prefixes on this instruction")); | |
e0890092 | 3872 | |
29b0f896 AM |
3873 | p = frag_more (1 + size); |
3874 | *p++ = i.tm.base_opcode; | |
e0890092 | 3875 | |
3e02c1cc AM |
3876 | fixP = fix_new_exp (frag_now, p - frag_now->fr_literal, size, |
3877 | i.op[0].disps, 1, reloc (size, 1, 1, i.reloc[0])); | |
3878 | ||
3879 | /* All jumps handled here are signed, but don't use a signed limit | |
3880 | check for 32 and 16 bit jumps as we want to allow wrap around at | |
3881 | 4G and 64k respectively. */ | |
3882 | if (size == 1) | |
3883 | fixP->fx_signed = 1; | |
29b0f896 | 3884 | } |
e0890092 | 3885 | |
29b0f896 | 3886 | static void |
e3bb37b5 | 3887 | output_interseg_jump (void) |
29b0f896 AM |
3888 | { |
3889 | char *p; | |
3890 | int size; | |
3891 | int prefix; | |
3892 | int code16; | |
252b5132 | 3893 | |
29b0f896 AM |
3894 | code16 = 0; |
3895 | if (flag_code == CODE_16BIT) | |
3896 | code16 = CODE16; | |
a217f122 | 3897 | |
29b0f896 AM |
3898 | prefix = 0; |
3899 | if (i.prefix[DATA_PREFIX] != 0) | |
3900 | { | |
3901 | prefix = 1; | |
3902 | i.prefixes -= 1; | |
3903 | code16 ^= CODE16; | |
3904 | } | |
3905 | if (i.prefix[REX_PREFIX] != 0) | |
3906 | { | |
3907 | prefix++; | |
3908 | i.prefixes -= 1; | |
3909 | } | |
252b5132 | 3910 | |
29b0f896 AM |
3911 | size = 4; |
3912 | if (code16) | |
3913 | size = 2; | |
252b5132 | 3914 | |
29b0f896 AM |
3915 | if (i.prefixes != 0 && !intel_syntax) |
3916 | as_warn (_("skipping prefixes on this instruction")); | |
252b5132 | 3917 | |
29b0f896 AM |
3918 | /* 1 opcode; 2 segment; offset */ |
3919 | p = frag_more (prefix + 1 + 2 + size); | |
3e73aa7c | 3920 | |
29b0f896 AM |
3921 | if (i.prefix[DATA_PREFIX] != 0) |
3922 | *p++ = DATA_PREFIX_OPCODE; | |
252b5132 | 3923 | |
29b0f896 AM |
3924 | if (i.prefix[REX_PREFIX] != 0) |
3925 | *p++ = i.prefix[REX_PREFIX]; | |
252b5132 | 3926 | |
29b0f896 AM |
3927 | *p++ = i.tm.base_opcode; |
3928 | if (i.op[1].imms->X_op == O_constant) | |
3929 | { | |
3930 | offsetT n = i.op[1].imms->X_add_number; | |
252b5132 | 3931 | |
29b0f896 AM |
3932 | if (size == 2 |
3933 | && !fits_in_unsigned_word (n) | |
3934 | && !fits_in_signed_word (n)) | |
3935 | { | |
3936 | as_bad (_("16-bit jump out of range")); | |
3937 | return; | |
3938 | } | |
3939 | md_number_to_chars (p, n, size); | |
3940 | } | |
3941 | else | |
3942 | fix_new_exp (frag_now, p - frag_now->fr_literal, size, | |
3943 | i.op[1].imms, 0, reloc (size, 0, 0, i.reloc[1])); | |
3944 | if (i.op[0].imms->X_op != O_constant) | |
3945 | as_bad (_("can't handle non absolute segment in `%s'"), | |
3946 | i.tm.name); | |
3947 | md_number_to_chars (p + size, (valueT) i.op[0].imms->X_add_number, 2); | |
3948 | } | |
a217f122 | 3949 | |
29b0f896 | 3950 | static void |
e3bb37b5 | 3951 | output_insn (void) |
29b0f896 | 3952 | { |
2bbd9c25 JJ |
3953 | fragS *insn_start_frag; |
3954 | offsetT insn_start_off; | |
3955 | ||
29b0f896 AM |
3956 | /* Tie dwarf2 debug info to the address at the start of the insn. |
3957 | We can't do this after the insn has been output as the current | |
3958 | frag may have been closed off. eg. by frag_var. */ | |
3959 | dwarf2_emit_insn (0); | |
3960 | ||
2bbd9c25 JJ |
3961 | insn_start_frag = frag_now; |
3962 | insn_start_off = frag_now_fix (); | |
3963 | ||
29b0f896 AM |
3964 | /* Output jumps. */ |
3965 | if (i.tm.opcode_modifier & Jump) | |
3966 | output_branch (); | |
3967 | else if (i.tm.opcode_modifier & (JumpByte | JumpDword)) | |
3968 | output_jump (); | |
3969 | else if (i.tm.opcode_modifier & JumpInterSegment) | |
3970 | output_interseg_jump (); | |
3971 | else | |
3972 | { | |
3973 | /* Output normal instructions here. */ | |
3974 | char *p; | |
3975 | unsigned char *q; | |
331d2d0d | 3976 | unsigned int prefix; |
252b5132 | 3977 | |
42903f7f | 3978 | /* All opcodes on i386 have either 1 or 2 bytes. SSSE3 and |
381d071f L |
3979 | SSE4 instructions have 3 bytes. We may use one more higher |
3980 | byte to specify a prefix the instruction requires. Exclude | |
3981 | instructions which are in both SSE4 and ABM. */ | |
3982 | if ((i.tm.cpu_flags & (CpuSSSE3 | CpuSSE4)) != 0 | |
3983 | && (i.tm.cpu_flags & CpuABM) == 0) | |
bc4bd9ab | 3984 | { |
331d2d0d L |
3985 | if (i.tm.base_opcode & 0xff000000) |
3986 | { | |
3987 | prefix = (i.tm.base_opcode >> 24) & 0xff; | |
3988 | goto check_prefix; | |
3989 | } | |
3990 | } | |
3991 | else if ((i.tm.base_opcode & 0xff0000) != 0) | |
3992 | { | |
3993 | prefix = (i.tm.base_opcode >> 16) & 0xff; | |
bc4bd9ab MK |
3994 | if ((i.tm.cpu_flags & CpuPadLock) != 0) |
3995 | { | |
64e74474 | 3996 | check_prefix: |
bc4bd9ab MK |
3997 | if (prefix != REPE_PREFIX_OPCODE |
3998 | || i.prefix[LOCKREP_PREFIX] != REPE_PREFIX_OPCODE) | |
3999 | add_prefix (prefix); | |
4000 | } | |
4001 | else | |
331d2d0d | 4002 | add_prefix (prefix); |
0f10071e | 4003 | } |
252b5132 | 4004 | |
29b0f896 AM |
4005 | /* The prefix bytes. */ |
4006 | for (q = i.prefix; | |
4007 | q < i.prefix + sizeof (i.prefix) / sizeof (i.prefix[0]); | |
4008 | q++) | |
4009 | { | |
4010 | if (*q) | |
4011 | { | |
4012 | p = frag_more (1); | |
4013 | md_number_to_chars (p, (valueT) *q, 1); | |
4014 | } | |
4015 | } | |
252b5132 | 4016 | |
29b0f896 AM |
4017 | /* Now the opcode; be careful about word order here! */ |
4018 | if (fits_in_unsigned_byte (i.tm.base_opcode)) | |
4019 | { | |
4020 | FRAG_APPEND_1_CHAR (i.tm.base_opcode); | |
4021 | } | |
4022 | else | |
4023 | { | |
381d071f L |
4024 | if ((i.tm.cpu_flags & (CpuSSSE3 | CpuSSE4)) != 0 |
4025 | && (i.tm.cpu_flags & CpuABM) == 0) | |
331d2d0d L |
4026 | { |
4027 | p = frag_more (3); | |
4028 | *p++ = (i.tm.base_opcode >> 16) & 0xff; | |
4029 | } | |
4030 | else | |
4031 | p = frag_more (2); | |
0f10071e | 4032 | |
29b0f896 AM |
4033 | /* Put out high byte first: can't use md_number_to_chars! */ |
4034 | *p++ = (i.tm.base_opcode >> 8) & 0xff; | |
4035 | *p = i.tm.base_opcode & 0xff; | |
4036 | } | |
3e73aa7c | 4037 | |
29b0f896 AM |
4038 | /* Now the modrm byte and sib byte (if present). */ |
4039 | if (i.tm.opcode_modifier & Modrm) | |
4040 | { | |
4041 | p = frag_more (1); | |
4042 | md_number_to_chars (p, | |
4043 | (valueT) (i.rm.regmem << 0 | |
4044 | | i.rm.reg << 3 | |
4045 | | i.rm.mode << 6), | |
4046 | 1); | |
4047 | /* If i.rm.regmem == ESP (4) | |
4048 | && i.rm.mode != (Register mode) | |
4049 | && not 16 bit | |
4050 | ==> need second modrm byte. */ | |
4051 | if (i.rm.regmem == ESCAPE_TO_TWO_BYTE_ADDRESSING | |
4052 | && i.rm.mode != 3 | |
4053 | && !(i.base_reg && (i.base_reg->reg_type & Reg16) != 0)) | |
4054 | { | |
4055 | p = frag_more (1); | |
4056 | md_number_to_chars (p, | |
4057 | (valueT) (i.sib.base << 0 | |
4058 | | i.sib.index << 3 | |
4059 | | i.sib.scale << 6), | |
4060 | 1); | |
4061 | } | |
4062 | } | |
3e73aa7c | 4063 | |
29b0f896 | 4064 | if (i.disp_operands) |
2bbd9c25 | 4065 | output_disp (insn_start_frag, insn_start_off); |
3e73aa7c | 4066 | |
29b0f896 | 4067 | if (i.imm_operands) |
2bbd9c25 | 4068 | output_imm (insn_start_frag, insn_start_off); |
29b0f896 | 4069 | } |
252b5132 | 4070 | |
29b0f896 AM |
4071 | #ifdef DEBUG386 |
4072 | if (flag_debug) | |
4073 | { | |
7b81dfbb | 4074 | pi ("" /*line*/, &i); |
29b0f896 AM |
4075 | } |
4076 | #endif /* DEBUG386 */ | |
4077 | } | |
252b5132 | 4078 | |
29b0f896 | 4079 | static void |
64e74474 | 4080 | output_disp (fragS *insn_start_frag, offsetT insn_start_off) |
29b0f896 AM |
4081 | { |
4082 | char *p; | |
4083 | unsigned int n; | |
252b5132 | 4084 | |
29b0f896 AM |
4085 | for (n = 0; n < i.operands; n++) |
4086 | { | |
4087 | if (i.types[n] & Disp) | |
4088 | { | |
4089 | if (i.op[n].disps->X_op == O_constant) | |
4090 | { | |
4091 | int size; | |
4092 | offsetT val; | |
252b5132 | 4093 | |
29b0f896 AM |
4094 | size = 4; |
4095 | if (i.types[n] & (Disp8 | Disp16 | Disp64)) | |
4096 | { | |
4097 | size = 2; | |
4098 | if (i.types[n] & Disp8) | |
4099 | size = 1; | |
4100 | if (i.types[n] & Disp64) | |
4101 | size = 8; | |
4102 | } | |
4103 | val = offset_in_range (i.op[n].disps->X_add_number, | |
4104 | size); | |
4105 | p = frag_more (size); | |
4106 | md_number_to_chars (p, val, size); | |
4107 | } | |
4108 | else | |
4109 | { | |
f86103b7 | 4110 | enum bfd_reloc_code_real reloc_type; |
29b0f896 AM |
4111 | int size = 4; |
4112 | int sign = 0; | |
4113 | int pcrel = (i.flags[n] & Operand_PCrel) != 0; | |
4114 | ||
4115 | /* The PC relative address is computed relative | |
4116 | to the instruction boundary, so in case immediate | |
4117 | fields follows, we need to adjust the value. */ | |
4118 | if (pcrel && i.imm_operands) | |
4119 | { | |
4120 | int imm_size = 4; | |
4121 | unsigned int n1; | |
252b5132 | 4122 | |
29b0f896 AM |
4123 | for (n1 = 0; n1 < i.operands; n1++) |
4124 | if (i.types[n1] & Imm) | |
252b5132 | 4125 | { |
29b0f896 | 4126 | if (i.types[n1] & (Imm8 | Imm8S | Imm16 | Imm64)) |
252b5132 | 4127 | { |
29b0f896 AM |
4128 | imm_size = 2; |
4129 | if (i.types[n1] & (Imm8 | Imm8S)) | |
4130 | imm_size = 1; | |
4131 | if (i.types[n1] & Imm64) | |
4132 | imm_size = 8; | |
252b5132 | 4133 | } |
29b0f896 | 4134 | break; |
252b5132 | 4135 | } |
29b0f896 AM |
4136 | /* We should find the immediate. */ |
4137 | if (n1 == i.operands) | |
4138 | abort (); | |
4139 | i.op[n].disps->X_add_number -= imm_size; | |
4140 | } | |
520dc8e8 | 4141 | |
29b0f896 AM |
4142 | if (i.types[n] & Disp32S) |
4143 | sign = 1; | |
3e73aa7c | 4144 | |
29b0f896 AM |
4145 | if (i.types[n] & (Disp16 | Disp64)) |
4146 | { | |
4147 | size = 2; | |
4148 | if (i.types[n] & Disp64) | |
4149 | size = 8; | |
4150 | } | |
520dc8e8 | 4151 | |
29b0f896 | 4152 | p = frag_more (size); |
2bbd9c25 | 4153 | reloc_type = reloc (size, pcrel, sign, i.reloc[n]); |
d6ab8113 | 4154 | if (GOT_symbol |
2bbd9c25 | 4155 | && GOT_symbol == i.op[n].disps->X_add_symbol |
d6ab8113 | 4156 | && (((reloc_type == BFD_RELOC_32 |
7b81dfbb AJ |
4157 | || reloc_type == BFD_RELOC_X86_64_32S |
4158 | || (reloc_type == BFD_RELOC_64 | |
4159 | && object_64bit)) | |
d6ab8113 JB |
4160 | && (i.op[n].disps->X_op == O_symbol |
4161 | || (i.op[n].disps->X_op == O_add | |
4162 | && ((symbol_get_value_expression | |
4163 | (i.op[n].disps->X_op_symbol)->X_op) | |
4164 | == O_subtract)))) | |
4165 | || reloc_type == BFD_RELOC_32_PCREL)) | |
2bbd9c25 JJ |
4166 | { |
4167 | offsetT add; | |
4168 | ||
4169 | if (insn_start_frag == frag_now) | |
4170 | add = (p - frag_now->fr_literal) - insn_start_off; | |
4171 | else | |
4172 | { | |
4173 | fragS *fr; | |
4174 | ||
4175 | add = insn_start_frag->fr_fix - insn_start_off; | |
4176 | for (fr = insn_start_frag->fr_next; | |
4177 | fr && fr != frag_now; fr = fr->fr_next) | |
4178 | add += fr->fr_fix; | |
4179 | add += p - frag_now->fr_literal; | |
4180 | } | |
4181 | ||
4fa24527 | 4182 | if (!object_64bit) |
7b81dfbb AJ |
4183 | { |
4184 | reloc_type = BFD_RELOC_386_GOTPC; | |
4185 | i.op[n].imms->X_add_number += add; | |
4186 | } | |
4187 | else if (reloc_type == BFD_RELOC_64) | |
4188 | reloc_type = BFD_RELOC_X86_64_GOTPC64; | |
d6ab8113 | 4189 | else |
7b81dfbb AJ |
4190 | /* Don't do the adjustment for x86-64, as there |
4191 | the pcrel addressing is relative to the _next_ | |
4192 | insn, and that is taken care of in other code. */ | |
d6ab8113 | 4193 | reloc_type = BFD_RELOC_X86_64_GOTPC32; |
2bbd9c25 | 4194 | } |
062cd5e7 | 4195 | fix_new_exp (frag_now, p - frag_now->fr_literal, size, |
2bbd9c25 | 4196 | i.op[n].disps, pcrel, reloc_type); |
29b0f896 AM |
4197 | } |
4198 | } | |
4199 | } | |
4200 | } | |
252b5132 | 4201 | |
29b0f896 | 4202 | static void |
64e74474 | 4203 | output_imm (fragS *insn_start_frag, offsetT insn_start_off) |
29b0f896 AM |
4204 | { |
4205 | char *p; | |
4206 | unsigned int n; | |
252b5132 | 4207 | |
29b0f896 AM |
4208 | for (n = 0; n < i.operands; n++) |
4209 | { | |
4210 | if (i.types[n] & Imm) | |
4211 | { | |
4212 | if (i.op[n].imms->X_op == O_constant) | |
4213 | { | |
4214 | int size; | |
4215 | offsetT val; | |
b4cac588 | 4216 | |
29b0f896 AM |
4217 | size = 4; |
4218 | if (i.types[n] & (Imm8 | Imm8S | Imm16 | Imm64)) | |
4219 | { | |
4220 | size = 2; | |
4221 | if (i.types[n] & (Imm8 | Imm8S)) | |
4222 | size = 1; | |
4223 | else if (i.types[n] & Imm64) | |
4224 | size = 8; | |
4225 | } | |
4226 | val = offset_in_range (i.op[n].imms->X_add_number, | |
4227 | size); | |
4228 | p = frag_more (size); | |
4229 | md_number_to_chars (p, val, size); | |
4230 | } | |
4231 | else | |
4232 | { | |
4233 | /* Not absolute_section. | |
4234 | Need a 32-bit fixup (don't support 8bit | |
4235 | non-absolute imms). Try to support other | |
4236 | sizes ... */ | |
f86103b7 | 4237 | enum bfd_reloc_code_real reloc_type; |
29b0f896 AM |
4238 | int size = 4; |
4239 | int sign = 0; | |
4240 | ||
4241 | if ((i.types[n] & (Imm32S)) | |
a7d61044 JB |
4242 | && (i.suffix == QWORD_MNEM_SUFFIX |
4243 | || (!i.suffix && (i.tm.opcode_modifier & No_lSuf)))) | |
29b0f896 AM |
4244 | sign = 1; |
4245 | if (i.types[n] & (Imm8 | Imm8S | Imm16 | Imm64)) | |
4246 | { | |
4247 | size = 2; | |
4248 | if (i.types[n] & (Imm8 | Imm8S)) | |
4249 | size = 1; | |
4250 | if (i.types[n] & Imm64) | |
4251 | size = 8; | |
4252 | } | |
520dc8e8 | 4253 | |
29b0f896 AM |
4254 | p = frag_more (size); |
4255 | reloc_type = reloc (size, 0, sign, i.reloc[n]); | |
f86103b7 | 4256 | |
2bbd9c25 JJ |
4257 | /* This is tough to explain. We end up with this one if we |
4258 | * have operands that look like | |
4259 | * "_GLOBAL_OFFSET_TABLE_+[.-.L284]". The goal here is to | |
4260 | * obtain the absolute address of the GOT, and it is strongly | |
4261 | * preferable from a performance point of view to avoid using | |
4262 | * a runtime relocation for this. The actual sequence of | |
4263 | * instructions often look something like: | |
4264 | * | |
4265 | * call .L66 | |
4266 | * .L66: | |
4267 | * popl %ebx | |
4268 | * addl $_GLOBAL_OFFSET_TABLE_+[.-.L66],%ebx | |
4269 | * | |
4270 | * The call and pop essentially return the absolute address | |
4271 | * of the label .L66 and store it in %ebx. The linker itself | |
4272 | * will ultimately change the first operand of the addl so | |
4273 | * that %ebx points to the GOT, but to keep things simple, the | |
4274 | * .o file must have this operand set so that it generates not | |
4275 | * the absolute address of .L66, but the absolute address of | |
4276 | * itself. This allows the linker itself simply treat a GOTPC | |
4277 | * relocation as asking for a pcrel offset to the GOT to be | |
4278 | * added in, and the addend of the relocation is stored in the | |
4279 | * operand field for the instruction itself. | |
4280 | * | |
4281 | * Our job here is to fix the operand so that it would add | |
4282 | * the correct offset so that %ebx would point to itself. The | |
4283 | * thing that is tricky is that .-.L66 will point to the | |
4284 | * beginning of the instruction, so we need to further modify | |
4285 | * the operand so that it will point to itself. There are | |
4286 | * other cases where you have something like: | |
4287 | * | |
4288 | * .long $_GLOBAL_OFFSET_TABLE_+[.-.L66] | |
4289 | * | |
4290 | * and here no correction would be required. Internally in | |
4291 | * the assembler we treat operands of this form as not being | |
4292 | * pcrel since the '.' is explicitly mentioned, and I wonder | |
4293 | * whether it would simplify matters to do it this way. Who | |
4294 | * knows. In earlier versions of the PIC patches, the | |
4295 | * pcrel_adjust field was used to store the correction, but | |
4296 | * since the expression is not pcrel, I felt it would be | |
4297 | * confusing to do it this way. */ | |
4298 | ||
d6ab8113 | 4299 | if ((reloc_type == BFD_RELOC_32 |
7b81dfbb AJ |
4300 | || reloc_type == BFD_RELOC_X86_64_32S |
4301 | || reloc_type == BFD_RELOC_64) | |
29b0f896 AM |
4302 | && GOT_symbol |
4303 | && GOT_symbol == i.op[n].imms->X_add_symbol | |
4304 | && (i.op[n].imms->X_op == O_symbol | |
4305 | || (i.op[n].imms->X_op == O_add | |
4306 | && ((symbol_get_value_expression | |
4307 | (i.op[n].imms->X_op_symbol)->X_op) | |
4308 | == O_subtract)))) | |
4309 | { | |
2bbd9c25 JJ |
4310 | offsetT add; |
4311 | ||
4312 | if (insn_start_frag == frag_now) | |
4313 | add = (p - frag_now->fr_literal) - insn_start_off; | |
4314 | else | |
4315 | { | |
4316 | fragS *fr; | |
4317 | ||
4318 | add = insn_start_frag->fr_fix - insn_start_off; | |
4319 | for (fr = insn_start_frag->fr_next; | |
4320 | fr && fr != frag_now; fr = fr->fr_next) | |
4321 | add += fr->fr_fix; | |
4322 | add += p - frag_now->fr_literal; | |
4323 | } | |
4324 | ||
4fa24527 | 4325 | if (!object_64bit) |
d6ab8113 | 4326 | reloc_type = BFD_RELOC_386_GOTPC; |
7b81dfbb | 4327 | else if (size == 4) |
d6ab8113 | 4328 | reloc_type = BFD_RELOC_X86_64_GOTPC32; |
7b81dfbb AJ |
4329 | else if (size == 8) |
4330 | reloc_type = BFD_RELOC_X86_64_GOTPC64; | |
2bbd9c25 | 4331 | i.op[n].imms->X_add_number += add; |
29b0f896 | 4332 | } |
29b0f896 AM |
4333 | fix_new_exp (frag_now, p - frag_now->fr_literal, size, |
4334 | i.op[n].imms, 0, reloc_type); | |
4335 | } | |
4336 | } | |
4337 | } | |
252b5132 RH |
4338 | } |
4339 | \f | |
d182319b JB |
4340 | /* x86_cons_fix_new is called via the expression parsing code when a |
4341 | reloc is needed. We use this hook to get the correct .got reloc. */ | |
4342 | static enum bfd_reloc_code_real got_reloc = NO_RELOC; | |
4343 | static int cons_sign = -1; | |
4344 | ||
4345 | void | |
e3bb37b5 | 4346 | x86_cons_fix_new (fragS *frag, unsigned int off, unsigned int len, |
64e74474 | 4347 | expressionS *exp) |
d182319b JB |
4348 | { |
4349 | enum bfd_reloc_code_real r = reloc (len, 0, cons_sign, got_reloc); | |
4350 | ||
4351 | got_reloc = NO_RELOC; | |
4352 | ||
4353 | #ifdef TE_PE | |
4354 | if (exp->X_op == O_secrel) | |
4355 | { | |
4356 | exp->X_op = O_symbol; | |
4357 | r = BFD_RELOC_32_SECREL; | |
4358 | } | |
4359 | #endif | |
4360 | ||
4361 | fix_new_exp (frag, off, len, exp, 0, r); | |
4362 | } | |
4363 | ||
718ddfc0 JB |
4364 | #if (!defined (OBJ_ELF) && !defined (OBJ_MAYBE_ELF)) || defined (LEX_AT) |
4365 | # define lex_got(reloc, adjust, types) NULL | |
4366 | #else | |
f3c180ae AM |
4367 | /* Parse operands of the form |
4368 | <symbol>@GOTOFF+<nnn> | |
4369 | and similar .plt or .got references. | |
4370 | ||
4371 | If we find one, set up the correct relocation in RELOC and copy the | |
4372 | input string, minus the `@GOTOFF' into a malloc'd buffer for | |
4373 | parsing by the calling routine. Return this buffer, and if ADJUST | |
4374 | is non-null set it to the length of the string we removed from the | |
4375 | input line. Otherwise return NULL. */ | |
4376 | static char * | |
3956db08 | 4377 | lex_got (enum bfd_reloc_code_real *reloc, |
64e74474 AM |
4378 | int *adjust, |
4379 | unsigned int *types) | |
f3c180ae | 4380 | { |
7b81dfbb AJ |
4381 | /* Some of the relocations depend on the size of what field is to |
4382 | be relocated. But in our callers i386_immediate and i386_displacement | |
4383 | we don't yet know the operand size (this will be set by insn | |
4384 | matching). Hence we record the word32 relocation here, | |
4385 | and adjust the reloc according to the real size in reloc(). */ | |
f3c180ae AM |
4386 | static const struct { |
4387 | const char *str; | |
4fa24527 | 4388 | const enum bfd_reloc_code_real rel[2]; |
3956db08 | 4389 | const unsigned int types64; |
f3c180ae | 4390 | } gotrel[] = { |
4eed87de AM |
4391 | { "PLTOFF", { 0, |
4392 | BFD_RELOC_X86_64_PLTOFF64 }, | |
4393 | Imm64 }, | |
4394 | { "PLT", { BFD_RELOC_386_PLT32, | |
4395 | BFD_RELOC_X86_64_PLT32 }, | |
4396 | Imm32 | Imm32S | Disp32 }, | |
4397 | { "GOTPLT", { 0, | |
4398 | BFD_RELOC_X86_64_GOTPLT64 }, | |
4399 | Imm64 | Disp64 }, | |
4400 | { "GOTOFF", { BFD_RELOC_386_GOTOFF, | |
4401 | BFD_RELOC_X86_64_GOTOFF64 }, | |
4402 | Imm64 | Disp64 }, | |
4403 | { "GOTPCREL", { 0, | |
4404 | BFD_RELOC_X86_64_GOTPCREL }, | |
4405 | Imm32 | Imm32S | Disp32 }, | |
4406 | { "TLSGD", { BFD_RELOC_386_TLS_GD, | |
4407 | BFD_RELOC_X86_64_TLSGD }, | |
4408 | Imm32 | Imm32S | Disp32 }, | |
4409 | { "TLSLDM", { BFD_RELOC_386_TLS_LDM, | |
4410 | 0 }, | |
4411 | 0 }, | |
4412 | { "TLSLD", { 0, | |
4413 | BFD_RELOC_X86_64_TLSLD }, | |
4414 | Imm32 | Imm32S | Disp32 }, | |
4415 | { "GOTTPOFF", { BFD_RELOC_386_TLS_IE_32, | |
4416 | BFD_RELOC_X86_64_GOTTPOFF }, | |
4417 | Imm32 | Imm32S | Disp32 }, | |
4418 | { "TPOFF", { BFD_RELOC_386_TLS_LE_32, | |
4419 | BFD_RELOC_X86_64_TPOFF32 }, | |
4420 | Imm32 | Imm32S | Imm64 | Disp32 | Disp64 }, | |
4421 | { "NTPOFF", { BFD_RELOC_386_TLS_LE, | |
4422 | 0 }, | |
4423 | 0 }, | |
4424 | { "DTPOFF", { BFD_RELOC_386_TLS_LDO_32, | |
4425 | BFD_RELOC_X86_64_DTPOFF32 }, | |
4426 | Imm32 | Imm32S | Imm64 | Disp32 | Disp64 }, | |
4427 | { "GOTNTPOFF",{ BFD_RELOC_386_TLS_GOTIE, | |
4428 | 0 }, | |
4429 | 0 }, | |
4430 | { "INDNTPOFF",{ BFD_RELOC_386_TLS_IE, | |
4431 | 0 }, | |
4432 | 0 }, | |
4433 | { "GOT", { BFD_RELOC_386_GOT32, | |
4434 | BFD_RELOC_X86_64_GOT32 }, | |
4435 | Imm32 | Imm32S | Disp32 | Imm64 }, | |
4436 | { "TLSDESC", { BFD_RELOC_386_TLS_GOTDESC, | |
4437 | BFD_RELOC_X86_64_GOTPC32_TLSDESC }, | |
4438 | Imm32 | Imm32S | Disp32 }, | |
4439 | { "TLSCALL", { BFD_RELOC_386_TLS_DESC_CALL, | |
4440 | BFD_RELOC_X86_64_TLSDESC_CALL }, | |
4441 | Imm32 | Imm32S | Disp32 } | |
f3c180ae AM |
4442 | }; |
4443 | char *cp; | |
4444 | unsigned int j; | |
4445 | ||
718ddfc0 JB |
4446 | if (!IS_ELF) |
4447 | return NULL; | |
4448 | ||
f3c180ae AM |
4449 | for (cp = input_line_pointer; *cp != '@'; cp++) |
4450 | if (is_end_of_line[(unsigned char) *cp]) | |
4451 | return NULL; | |
4452 | ||
4453 | for (j = 0; j < sizeof (gotrel) / sizeof (gotrel[0]); j++) | |
4454 | { | |
4455 | int len; | |
4456 | ||
4457 | len = strlen (gotrel[j].str); | |
28f81592 | 4458 | if (strncasecmp (cp + 1, gotrel[j].str, len) == 0) |
f3c180ae | 4459 | { |
4fa24527 | 4460 | if (gotrel[j].rel[object_64bit] != 0) |
f3c180ae | 4461 | { |
28f81592 AM |
4462 | int first, second; |
4463 | char *tmpbuf, *past_reloc; | |
f3c180ae | 4464 | |
4fa24527 | 4465 | *reloc = gotrel[j].rel[object_64bit]; |
28f81592 AM |
4466 | if (adjust) |
4467 | *adjust = len; | |
f3c180ae | 4468 | |
3956db08 JB |
4469 | if (types) |
4470 | { | |
4471 | if (flag_code != CODE_64BIT) | |
4eed87de | 4472 | *types = Imm32 | Disp32; |
3956db08 JB |
4473 | else |
4474 | *types = gotrel[j].types64; | |
4475 | } | |
4476 | ||
f3c180ae AM |
4477 | if (GOT_symbol == NULL) |
4478 | GOT_symbol = symbol_find_or_make (GLOBAL_OFFSET_TABLE_NAME); | |
4479 | ||
28f81592 | 4480 | /* The length of the first part of our input line. */ |
f3c180ae | 4481 | first = cp - input_line_pointer; |
28f81592 AM |
4482 | |
4483 | /* The second part goes from after the reloc token until | |
4484 | (and including) an end_of_line char. Don't use strlen | |
4485 | here as the end_of_line char may not be a NUL. */ | |
4486 | past_reloc = cp + 1 + len; | |
4487 | for (cp = past_reloc; !is_end_of_line[(unsigned char) *cp++]; ) | |
4488 | ; | |
4489 | second = cp - past_reloc; | |
4490 | ||
4491 | /* Allocate and copy string. The trailing NUL shouldn't | |
4492 | be necessary, but be safe. */ | |
4493 | tmpbuf = xmalloc (first + second + 2); | |
f3c180ae | 4494 | memcpy (tmpbuf, input_line_pointer, first); |
0787a12d AM |
4495 | if (second != 0 && *past_reloc != ' ') |
4496 | /* Replace the relocation token with ' ', so that | |
4497 | errors like foo@GOTOFF1 will be detected. */ | |
4498 | tmpbuf[first++] = ' '; | |
4499 | memcpy (tmpbuf + first, past_reloc, second); | |
4500 | tmpbuf[first + second] = '\0'; | |
f3c180ae AM |
4501 | return tmpbuf; |
4502 | } | |
4503 | ||
4fa24527 JB |
4504 | as_bad (_("@%s reloc is not supported with %d-bit output format"), |
4505 | gotrel[j].str, 1 << (5 + object_64bit)); | |
f3c180ae AM |
4506 | return NULL; |
4507 | } | |
4508 | } | |
4509 | ||
4510 | /* Might be a symbol version string. Don't as_bad here. */ | |
4511 | return NULL; | |
4512 | } | |
4513 | ||
f3c180ae | 4514 | void |
e3bb37b5 | 4515 | x86_cons (expressionS *exp, int size) |
f3c180ae | 4516 | { |
4fa24527 | 4517 | if (size == 4 || (object_64bit && size == 8)) |
f3c180ae AM |
4518 | { |
4519 | /* Handle @GOTOFF and the like in an expression. */ | |
4520 | char *save; | |
4521 | char *gotfree_input_line; | |
4522 | int adjust; | |
4523 | ||
4524 | save = input_line_pointer; | |
3956db08 | 4525 | gotfree_input_line = lex_got (&got_reloc, &adjust, NULL); |
f3c180ae AM |
4526 | if (gotfree_input_line) |
4527 | input_line_pointer = gotfree_input_line; | |
4528 | ||
4529 | expression (exp); | |
4530 | ||
4531 | if (gotfree_input_line) | |
4532 | { | |
4533 | /* expression () has merrily parsed up to the end of line, | |
4534 | or a comma - in the wrong buffer. Transfer how far | |
4535 | input_line_pointer has moved to the right buffer. */ | |
4536 | input_line_pointer = (save | |
4537 | + (input_line_pointer - gotfree_input_line) | |
4538 | + adjust); | |
4539 | free (gotfree_input_line); | |
4540 | } | |
4541 | } | |
4542 | else | |
4543 | expression (exp); | |
4544 | } | |
4545 | #endif | |
4546 | ||
d182319b | 4547 | static void signed_cons (int size) |
6482c264 | 4548 | { |
d182319b JB |
4549 | if (flag_code == CODE_64BIT) |
4550 | cons_sign = 1; | |
4551 | cons (size); | |
4552 | cons_sign = -1; | |
6482c264 NC |
4553 | } |
4554 | ||
d182319b | 4555 | #ifdef TE_PE |
6482c264 NC |
4556 | static void |
4557 | pe_directive_secrel (dummy) | |
4558 | int dummy ATTRIBUTE_UNUSED; | |
4559 | { | |
4560 | expressionS exp; | |
4561 | ||
4562 | do | |
4563 | { | |
4564 | expression (&exp); | |
4565 | if (exp.X_op == O_symbol) | |
4566 | exp.X_op = O_secrel; | |
4567 | ||
4568 | emit_expr (&exp, 4); | |
4569 | } | |
4570 | while (*input_line_pointer++ == ','); | |
4571 | ||
4572 | input_line_pointer--; | |
4573 | demand_empty_rest_of_line (); | |
4574 | } | |
6482c264 NC |
4575 | #endif |
4576 | ||
252b5132 | 4577 | static int |
70e41ade | 4578 | i386_immediate (char *imm_start) |
252b5132 RH |
4579 | { |
4580 | char *save_input_line_pointer; | |
f3c180ae | 4581 | char *gotfree_input_line; |
252b5132 | 4582 | segT exp_seg = 0; |
47926f60 | 4583 | expressionS *exp; |
3956db08 | 4584 | unsigned int types = ~0U; |
252b5132 RH |
4585 | |
4586 | if (i.imm_operands == MAX_IMMEDIATE_OPERANDS) | |
4587 | { | |
31b2323c L |
4588 | as_bad (_("at most %d immediate operands are allowed"), |
4589 | MAX_IMMEDIATE_OPERANDS); | |
252b5132 RH |
4590 | return 0; |
4591 | } | |
4592 | ||
4593 | exp = &im_expressions[i.imm_operands++]; | |
520dc8e8 | 4594 | i.op[this_operand].imms = exp; |
252b5132 RH |
4595 | |
4596 | if (is_space_char (*imm_start)) | |
4597 | ++imm_start; | |
4598 | ||
4599 | save_input_line_pointer = input_line_pointer; | |
4600 | input_line_pointer = imm_start; | |
4601 | ||
3956db08 | 4602 | gotfree_input_line = lex_got (&i.reloc[this_operand], NULL, &types); |
f3c180ae AM |
4603 | if (gotfree_input_line) |
4604 | input_line_pointer = gotfree_input_line; | |
252b5132 RH |
4605 | |
4606 | exp_seg = expression (exp); | |
4607 | ||
83183c0c | 4608 | SKIP_WHITESPACE (); |
252b5132 | 4609 | if (*input_line_pointer) |
f3c180ae | 4610 | as_bad (_("junk `%s' after expression"), input_line_pointer); |
252b5132 RH |
4611 | |
4612 | input_line_pointer = save_input_line_pointer; | |
f3c180ae AM |
4613 | if (gotfree_input_line) |
4614 | free (gotfree_input_line); | |
252b5132 | 4615 | |
2daf4fd8 | 4616 | if (exp->X_op == O_absent || exp->X_op == O_big) |
252b5132 | 4617 | { |
47926f60 | 4618 | /* Missing or bad expr becomes absolute 0. */ |
d0b47220 | 4619 | as_bad (_("missing or invalid immediate expression `%s' taken as 0"), |
24eab124 | 4620 | imm_start); |
252b5132 RH |
4621 | exp->X_op = O_constant; |
4622 | exp->X_add_number = 0; | |
4623 | exp->X_add_symbol = (symbolS *) 0; | |
4624 | exp->X_op_symbol = (symbolS *) 0; | |
252b5132 | 4625 | } |
3e73aa7c | 4626 | else if (exp->X_op == O_constant) |
252b5132 | 4627 | { |
47926f60 | 4628 | /* Size it properly later. */ |
3e73aa7c JH |
4629 | i.types[this_operand] |= Imm64; |
4630 | /* If BFD64, sign extend val. */ | |
4eed87de AM |
4631 | if (!use_rela_relocations |
4632 | && (exp->X_add_number & ~(((addressT) 2 << 31) - 1)) == 0) | |
4633 | exp->X_add_number | |
4634 | = (exp->X_add_number ^ ((addressT) 1 << 31)) - ((addressT) 1 << 31); | |
252b5132 | 4635 | } |
4c63da97 | 4636 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)) |
f86103b7 | 4637 | else if (OUTPUT_FLAVOR == bfd_target_aout_flavour |
31312f95 | 4638 | && exp_seg != absolute_section |
47926f60 | 4639 | && exp_seg != text_section |
24eab124 AM |
4640 | && exp_seg != data_section |
4641 | && exp_seg != bss_section | |
4642 | && exp_seg != undefined_section | |
f86103b7 | 4643 | && !bfd_is_com_section (exp_seg)) |
252b5132 | 4644 | { |
d0b47220 | 4645 | as_bad (_("unimplemented segment %s in operand"), exp_seg->name); |
252b5132 RH |
4646 | return 0; |
4647 | } | |
4648 | #endif | |
bb8f5920 L |
4649 | else if (!intel_syntax && exp->X_op == O_register) |
4650 | { | |
4651 | as_bad (_("illegal immediate register operand %s"), imm_start); | |
4652 | return 0; | |
4653 | } | |
252b5132 RH |
4654 | else |
4655 | { | |
4656 | /* This is an address. The size of the address will be | |
24eab124 | 4657 | determined later, depending on destination register, |
3e73aa7c JH |
4658 | suffix, or the default for the section. */ |
4659 | i.types[this_operand] |= Imm8 | Imm16 | Imm32 | Imm32S | Imm64; | |
3956db08 | 4660 | i.types[this_operand] &= types; |
252b5132 RH |
4661 | } |
4662 | ||
4663 | return 1; | |
4664 | } | |
4665 | ||
551c1ca1 | 4666 | static char * |
e3bb37b5 | 4667 | i386_scale (char *scale) |
252b5132 | 4668 | { |
551c1ca1 AM |
4669 | offsetT val; |
4670 | char *save = input_line_pointer; | |
252b5132 | 4671 | |
551c1ca1 AM |
4672 | input_line_pointer = scale; |
4673 | val = get_absolute_expression (); | |
4674 | ||
4675 | switch (val) | |
252b5132 | 4676 | { |
551c1ca1 | 4677 | case 1: |
252b5132 RH |
4678 | i.log2_scale_factor = 0; |
4679 | break; | |
551c1ca1 | 4680 | case 2: |
252b5132 RH |
4681 | i.log2_scale_factor = 1; |
4682 | break; | |
551c1ca1 | 4683 | case 4: |
252b5132 RH |
4684 | i.log2_scale_factor = 2; |
4685 | break; | |
551c1ca1 | 4686 | case 8: |
252b5132 RH |
4687 | i.log2_scale_factor = 3; |
4688 | break; | |
4689 | default: | |
a724f0f4 JB |
4690 | { |
4691 | char sep = *input_line_pointer; | |
4692 | ||
4693 | *input_line_pointer = '\0'; | |
4694 | as_bad (_("expecting scale factor of 1, 2, 4, or 8: got `%s'"), | |
4695 | scale); | |
4696 | *input_line_pointer = sep; | |
4697 | input_line_pointer = save; | |
4698 | return NULL; | |
4699 | } | |
252b5132 | 4700 | } |
29b0f896 | 4701 | if (i.log2_scale_factor != 0 && i.index_reg == 0) |
252b5132 RH |
4702 | { |
4703 | as_warn (_("scale factor of %d without an index register"), | |
24eab124 | 4704 | 1 << i.log2_scale_factor); |
252b5132 RH |
4705 | #if SCALE1_WHEN_NO_INDEX |
4706 | i.log2_scale_factor = 0; | |
4707 | #endif | |
4708 | } | |
551c1ca1 AM |
4709 | scale = input_line_pointer; |
4710 | input_line_pointer = save; | |
4711 | return scale; | |
252b5132 RH |
4712 | } |
4713 | ||
252b5132 | 4714 | static int |
e3bb37b5 | 4715 | i386_displacement (char *disp_start, char *disp_end) |
252b5132 | 4716 | { |
29b0f896 | 4717 | expressionS *exp; |
252b5132 RH |
4718 | segT exp_seg = 0; |
4719 | char *save_input_line_pointer; | |
f3c180ae | 4720 | char *gotfree_input_line; |
e05278af | 4721 | int bigdisp, override; |
3956db08 | 4722 | unsigned int types = Disp; |
252b5132 | 4723 | |
31b2323c L |
4724 | if (i.disp_operands == MAX_MEMORY_OPERANDS) |
4725 | { | |
4726 | as_bad (_("at most %d displacement operands are allowed"), | |
4727 | MAX_MEMORY_OPERANDS); | |
4728 | return 0; | |
4729 | } | |
4730 | ||
e05278af JB |
4731 | if ((i.types[this_operand] & JumpAbsolute) |
4732 | || !(current_templates->start->opcode_modifier & (Jump | JumpDword))) | |
4733 | { | |
4734 | bigdisp = Disp32; | |
4735 | override = (i.prefix[ADDR_PREFIX] != 0); | |
4736 | } | |
4737 | else | |
4738 | { | |
4739 | /* For PC-relative branches, the width of the displacement | |
4740 | is dependent upon data size, not address size. */ | |
4741 | bigdisp = 0; | |
4742 | override = (i.prefix[DATA_PREFIX] != 0); | |
4743 | } | |
3e73aa7c | 4744 | if (flag_code == CODE_64BIT) |
7ecd2f8b | 4745 | { |
e05278af | 4746 | if (!bigdisp) |
64e74474 AM |
4747 | bigdisp = ((override || i.suffix == WORD_MNEM_SUFFIX) |
4748 | ? Disp16 | |
4749 | : Disp32S | Disp32); | |
e05278af | 4750 | else if (!override) |
3956db08 | 4751 | bigdisp = Disp64 | Disp32S | Disp32; |
7ecd2f8b | 4752 | } |
e05278af JB |
4753 | else |
4754 | { | |
4755 | if (!bigdisp) | |
4756 | { | |
4757 | if (!override) | |
4758 | override = (i.suffix == (flag_code != CODE_16BIT | |
4759 | ? WORD_MNEM_SUFFIX | |
4760 | : LONG_MNEM_SUFFIX)); | |
4761 | bigdisp = Disp32; | |
4762 | } | |
4763 | if ((flag_code == CODE_16BIT) ^ override) | |
4764 | bigdisp = Disp16; | |
4765 | } | |
252b5132 RH |
4766 | i.types[this_operand] |= bigdisp; |
4767 | ||
4768 | exp = &disp_expressions[i.disp_operands]; | |
520dc8e8 | 4769 | i.op[this_operand].disps = exp; |
252b5132 RH |
4770 | i.disp_operands++; |
4771 | save_input_line_pointer = input_line_pointer; | |
4772 | input_line_pointer = disp_start; | |
4773 | END_STRING_AND_SAVE (disp_end); | |
4774 | ||
4775 | #ifndef GCC_ASM_O_HACK | |
4776 | #define GCC_ASM_O_HACK 0 | |
4777 | #endif | |
4778 | #if GCC_ASM_O_HACK | |
4779 | END_STRING_AND_SAVE (disp_end + 1); | |
4780 | if ((i.types[this_operand] & BaseIndex) != 0 | |
24eab124 | 4781 | && displacement_string_end[-1] == '+') |
252b5132 RH |
4782 | { |
4783 | /* This hack is to avoid a warning when using the "o" | |
24eab124 AM |
4784 | constraint within gcc asm statements. |
4785 | For instance: | |
4786 | ||
4787 | #define _set_tssldt_desc(n,addr,limit,type) \ | |
4788 | __asm__ __volatile__ ( \ | |
4789 | "movw %w2,%0\n\t" \ | |
4790 | "movw %w1,2+%0\n\t" \ | |
4791 | "rorl $16,%1\n\t" \ | |
4792 | "movb %b1,4+%0\n\t" \ | |
4793 | "movb %4,5+%0\n\t" \ | |
4794 | "movb $0,6+%0\n\t" \ | |
4795 | "movb %h1,7+%0\n\t" \ | |
4796 | "rorl $16,%1" \ | |
4797 | : "=o"(*(n)) : "q" (addr), "ri"(limit), "i"(type)) | |
4798 | ||
4799 | This works great except that the output assembler ends | |
4800 | up looking a bit weird if it turns out that there is | |
4801 | no offset. You end up producing code that looks like: | |
4802 | ||
4803 | #APP | |
4804 | movw $235,(%eax) | |
4805 | movw %dx,2+(%eax) | |
4806 | rorl $16,%edx | |
4807 | movb %dl,4+(%eax) | |
4808 | movb $137,5+(%eax) | |
4809 | movb $0,6+(%eax) | |
4810 | movb %dh,7+(%eax) | |
4811 | rorl $16,%edx | |
4812 | #NO_APP | |
4813 | ||
47926f60 | 4814 | So here we provide the missing zero. */ |
24eab124 AM |
4815 | |
4816 | *displacement_string_end = '0'; | |
252b5132 RH |
4817 | } |
4818 | #endif | |
3956db08 | 4819 | gotfree_input_line = lex_got (&i.reloc[this_operand], NULL, &types); |
f3c180ae AM |
4820 | if (gotfree_input_line) |
4821 | input_line_pointer = gotfree_input_line; | |
252b5132 | 4822 | |
24eab124 | 4823 | exp_seg = expression (exp); |
252b5132 | 4824 | |
636c26b0 AM |
4825 | SKIP_WHITESPACE (); |
4826 | if (*input_line_pointer) | |
4827 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
4828 | #if GCC_ASM_O_HACK | |
4829 | RESTORE_END_STRING (disp_end + 1); | |
4830 | #endif | |
4831 | RESTORE_END_STRING (disp_end); | |
4832 | input_line_pointer = save_input_line_pointer; | |
636c26b0 AM |
4833 | if (gotfree_input_line) |
4834 | free (gotfree_input_line); | |
636c26b0 | 4835 | |
24eab124 AM |
4836 | /* We do this to make sure that the section symbol is in |
4837 | the symbol table. We will ultimately change the relocation | |
47926f60 | 4838 | to be relative to the beginning of the section. */ |
1ae12ab7 | 4839 | if (i.reloc[this_operand] == BFD_RELOC_386_GOTOFF |
d6ab8113 JB |
4840 | || i.reloc[this_operand] == BFD_RELOC_X86_64_GOTPCREL |
4841 | || i.reloc[this_operand] == BFD_RELOC_X86_64_GOTOFF64) | |
24eab124 | 4842 | { |
636c26b0 AM |
4843 | if (exp->X_op != O_symbol) |
4844 | { | |
4845 | as_bad (_("bad expression used with @%s"), | |
4846 | (i.reloc[this_operand] == BFD_RELOC_X86_64_GOTPCREL | |
4847 | ? "GOTPCREL" | |
4848 | : "GOTOFF")); | |
4849 | return 0; | |
4850 | } | |
4851 | ||
e5cb08ac | 4852 | if (S_IS_LOCAL (exp->X_add_symbol) |
24eab124 AM |
4853 | && S_GET_SEGMENT (exp->X_add_symbol) != undefined_section) |
4854 | section_symbol (S_GET_SEGMENT (exp->X_add_symbol)); | |
24eab124 AM |
4855 | exp->X_op = O_subtract; |
4856 | exp->X_op_symbol = GOT_symbol; | |
1ae12ab7 | 4857 | if (i.reloc[this_operand] == BFD_RELOC_X86_64_GOTPCREL) |
29b0f896 | 4858 | i.reloc[this_operand] = BFD_RELOC_32_PCREL; |
d6ab8113 JB |
4859 | else if (i.reloc[this_operand] == BFD_RELOC_X86_64_GOTOFF64) |
4860 | i.reloc[this_operand] = BFD_RELOC_64; | |
23df1078 | 4861 | else |
29b0f896 | 4862 | i.reloc[this_operand] = BFD_RELOC_32; |
24eab124 | 4863 | } |
252b5132 | 4864 | |
2daf4fd8 AM |
4865 | if (exp->X_op == O_absent || exp->X_op == O_big) |
4866 | { | |
47926f60 | 4867 | /* Missing or bad expr becomes absolute 0. */ |
d0b47220 | 4868 | as_bad (_("missing or invalid displacement expression `%s' taken as 0"), |
2daf4fd8 AM |
4869 | disp_start); |
4870 | exp->X_op = O_constant; | |
4871 | exp->X_add_number = 0; | |
4872 | exp->X_add_symbol = (symbolS *) 0; | |
4873 | exp->X_op_symbol = (symbolS *) 0; | |
4874 | } | |
4875 | ||
4c63da97 | 4876 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)) |
45288df1 | 4877 | if (exp->X_op != O_constant |
45288df1 | 4878 | && OUTPUT_FLAVOR == bfd_target_aout_flavour |
31312f95 | 4879 | && exp_seg != absolute_section |
45288df1 AM |
4880 | && exp_seg != text_section |
4881 | && exp_seg != data_section | |
4882 | && exp_seg != bss_section | |
31312f95 | 4883 | && exp_seg != undefined_section |
f86103b7 | 4884 | && !bfd_is_com_section (exp_seg)) |
24eab124 | 4885 | { |
d0b47220 | 4886 | as_bad (_("unimplemented segment %s in operand"), exp_seg->name); |
24eab124 AM |
4887 | return 0; |
4888 | } | |
252b5132 | 4889 | #endif |
3956db08 JB |
4890 | |
4891 | if (!(i.types[this_operand] & ~Disp)) | |
4892 | i.types[this_operand] &= types; | |
4893 | ||
252b5132 RH |
4894 | return 1; |
4895 | } | |
4896 | ||
eecb386c | 4897 | /* Make sure the memory operand we've been dealt is valid. |
47926f60 KH |
4898 | Return 1 on success, 0 on a failure. */ |
4899 | ||
252b5132 | 4900 | static int |
e3bb37b5 | 4901 | i386_index_check (const char *operand_string) |
252b5132 | 4902 | { |
3e73aa7c | 4903 | int ok; |
24eab124 | 4904 | #if INFER_ADDR_PREFIX |
eecb386c AM |
4905 | int fudged = 0; |
4906 | ||
24eab124 AM |
4907 | tryprefix: |
4908 | #endif | |
3e73aa7c | 4909 | ok = 1; |
30123838 JB |
4910 | if ((current_templates->start->cpu_flags & CpuSVME) |
4911 | && current_templates->end[-1].operand_types[0] == AnyMem) | |
4912 | { | |
4913 | /* Memory operands of SVME insns are special in that they only allow | |
4914 | rAX as their memory address and ignore any segment override. */ | |
4915 | unsigned RegXX; | |
4916 | ||
4917 | /* SKINIT is even more restrictive: it always requires EAX. */ | |
4918 | if (strcmp (current_templates->start->name, "skinit") == 0) | |
4919 | RegXX = Reg32; | |
4920 | else if (flag_code == CODE_64BIT) | |
4921 | RegXX = i.prefix[ADDR_PREFIX] == 0 ? Reg64 : Reg32; | |
4922 | else | |
64e74474 AM |
4923 | RegXX = ((flag_code == CODE_16BIT) ^ (i.prefix[ADDR_PREFIX] != 0) |
4924 | ? Reg16 | |
4925 | : Reg32); | |
30123838 JB |
4926 | if (!i.base_reg |
4927 | || !(i.base_reg->reg_type & Acc) | |
4928 | || !(i.base_reg->reg_type & RegXX) | |
4929 | || i.index_reg | |
4930 | || (i.types[0] & Disp)) | |
4931 | ok = 0; | |
4932 | } | |
4933 | else if (flag_code == CODE_64BIT) | |
64e74474 AM |
4934 | { |
4935 | unsigned RegXX = (i.prefix[ADDR_PREFIX] == 0 ? Reg64 : Reg32); | |
4936 | ||
4937 | if ((i.base_reg | |
4938 | && ((i.base_reg->reg_type & RegXX) == 0) | |
4939 | && (i.base_reg->reg_type != BaseIndex | |
4940 | || i.index_reg)) | |
4941 | || (i.index_reg | |
4942 | && ((i.index_reg->reg_type & (RegXX | BaseIndex)) | |
4943 | != (RegXX | BaseIndex)))) | |
4944 | ok = 0; | |
3e73aa7c JH |
4945 | } |
4946 | else | |
4947 | { | |
4948 | if ((flag_code == CODE_16BIT) ^ (i.prefix[ADDR_PREFIX] != 0)) | |
4949 | { | |
4950 | /* 16bit checks. */ | |
4951 | if ((i.base_reg | |
29b0f896 AM |
4952 | && ((i.base_reg->reg_type & (Reg16 | BaseIndex | RegRex)) |
4953 | != (Reg16 | BaseIndex))) | |
3e73aa7c | 4954 | || (i.index_reg |
29b0f896 AM |
4955 | && (((i.index_reg->reg_type & (Reg16 | BaseIndex)) |
4956 | != (Reg16 | BaseIndex)) | |
4957 | || !(i.base_reg | |
4958 | && i.base_reg->reg_num < 6 | |
4959 | && i.index_reg->reg_num >= 6 | |
4960 | && i.log2_scale_factor == 0)))) | |
3e73aa7c JH |
4961 | ok = 0; |
4962 | } | |
4963 | else | |
e5cb08ac | 4964 | { |
3e73aa7c JH |
4965 | /* 32bit checks. */ |
4966 | if ((i.base_reg | |
4967 | && (i.base_reg->reg_type & (Reg32 | RegRex)) != Reg32) | |
4968 | || (i.index_reg | |
29b0f896 AM |
4969 | && ((i.index_reg->reg_type & (Reg32 | BaseIndex | RegRex)) |
4970 | != (Reg32 | BaseIndex)))) | |
e5cb08ac | 4971 | ok = 0; |
3e73aa7c JH |
4972 | } |
4973 | } | |
4974 | if (!ok) | |
24eab124 AM |
4975 | { |
4976 | #if INFER_ADDR_PREFIX | |
20f0a1fc | 4977 | if (i.prefix[ADDR_PREFIX] == 0) |
24eab124 AM |
4978 | { |
4979 | i.prefix[ADDR_PREFIX] = ADDR_PREFIX_OPCODE; | |
4980 | i.prefixes += 1; | |
b23bac36 AM |
4981 | /* Change the size of any displacement too. At most one of |
4982 | Disp16 or Disp32 is set. | |
4983 | FIXME. There doesn't seem to be any real need for separate | |
4984 | Disp16 and Disp32 flags. The same goes for Imm16 and Imm32. | |
47926f60 | 4985 | Removing them would probably clean up the code quite a lot. */ |
4eed87de AM |
4986 | if (flag_code != CODE_64BIT |
4987 | && (i.types[this_operand] & (Disp16 | Disp32))) | |
64e74474 | 4988 | i.types[this_operand] ^= (Disp16 | Disp32); |
eecb386c | 4989 | fudged = 1; |
24eab124 AM |
4990 | goto tryprefix; |
4991 | } | |
eecb386c AM |
4992 | if (fudged) |
4993 | as_bad (_("`%s' is not a valid base/index expression"), | |
4994 | operand_string); | |
4995 | else | |
c388dee8 | 4996 | #endif |
eecb386c AM |
4997 | as_bad (_("`%s' is not a valid %s bit base/index expression"), |
4998 | operand_string, | |
3e73aa7c | 4999 | flag_code_names[flag_code]); |
24eab124 | 5000 | } |
20f0a1fc | 5001 | return ok; |
24eab124 | 5002 | } |
252b5132 | 5003 | |
252b5132 | 5004 | /* Parse OPERAND_STRING into the i386_insn structure I. Returns non-zero |
47926f60 | 5005 | on error. */ |
252b5132 | 5006 | |
252b5132 | 5007 | static int |
e3bb37b5 | 5008 | i386_operand (char *operand_string) |
252b5132 | 5009 | { |
af6bdddf AM |
5010 | const reg_entry *r; |
5011 | char *end_op; | |
24eab124 | 5012 | char *op_string = operand_string; |
252b5132 | 5013 | |
24eab124 | 5014 | if (is_space_char (*op_string)) |
252b5132 RH |
5015 | ++op_string; |
5016 | ||
24eab124 | 5017 | /* We check for an absolute prefix (differentiating, |
47926f60 | 5018 | for example, 'jmp pc_relative_label' from 'jmp *absolute_label'. */ |
24eab124 AM |
5019 | if (*op_string == ABSOLUTE_PREFIX) |
5020 | { | |
5021 | ++op_string; | |
5022 | if (is_space_char (*op_string)) | |
5023 | ++op_string; | |
5024 | i.types[this_operand] |= JumpAbsolute; | |
5025 | } | |
252b5132 | 5026 | |
47926f60 | 5027 | /* Check if operand is a register. */ |
4d1bb795 | 5028 | if ((r = parse_register (op_string, &end_op)) != NULL) |
24eab124 | 5029 | { |
24eab124 AM |
5030 | /* Check for a segment override by searching for ':' after a |
5031 | segment register. */ | |
5032 | op_string = end_op; | |
5033 | if (is_space_char (*op_string)) | |
5034 | ++op_string; | |
5035 | if (*op_string == ':' && (r->reg_type & (SReg2 | SReg3))) | |
5036 | { | |
5037 | switch (r->reg_num) | |
5038 | { | |
5039 | case 0: | |
5040 | i.seg[i.mem_operands] = &es; | |
5041 | break; | |
5042 | case 1: | |
5043 | i.seg[i.mem_operands] = &cs; | |
5044 | break; | |
5045 | case 2: | |
5046 | i.seg[i.mem_operands] = &ss; | |
5047 | break; | |
5048 | case 3: | |
5049 | i.seg[i.mem_operands] = &ds; | |
5050 | break; | |
5051 | case 4: | |
5052 | i.seg[i.mem_operands] = &fs; | |
5053 | break; | |
5054 | case 5: | |
5055 | i.seg[i.mem_operands] = &gs; | |
5056 | break; | |
5057 | } | |
252b5132 | 5058 | |
24eab124 | 5059 | /* Skip the ':' and whitespace. */ |
252b5132 RH |
5060 | ++op_string; |
5061 | if (is_space_char (*op_string)) | |
24eab124 | 5062 | ++op_string; |
252b5132 | 5063 | |
24eab124 AM |
5064 | if (!is_digit_char (*op_string) |
5065 | && !is_identifier_char (*op_string) | |
5066 | && *op_string != '(' | |
5067 | && *op_string != ABSOLUTE_PREFIX) | |
5068 | { | |
5069 | as_bad (_("bad memory operand `%s'"), op_string); | |
5070 | return 0; | |
5071 | } | |
47926f60 | 5072 | /* Handle case of %es:*foo. */ |
24eab124 AM |
5073 | if (*op_string == ABSOLUTE_PREFIX) |
5074 | { | |
5075 | ++op_string; | |
5076 | if (is_space_char (*op_string)) | |
5077 | ++op_string; | |
5078 | i.types[this_operand] |= JumpAbsolute; | |
5079 | } | |
5080 | goto do_memory_reference; | |
5081 | } | |
5082 | if (*op_string) | |
5083 | { | |
d0b47220 | 5084 | as_bad (_("junk `%s' after register"), op_string); |
24eab124 AM |
5085 | return 0; |
5086 | } | |
5087 | i.types[this_operand] |= r->reg_type & ~BaseIndex; | |
520dc8e8 | 5088 | i.op[this_operand].regs = r; |
24eab124 AM |
5089 | i.reg_operands++; |
5090 | } | |
af6bdddf AM |
5091 | else if (*op_string == REGISTER_PREFIX) |
5092 | { | |
5093 | as_bad (_("bad register name `%s'"), op_string); | |
5094 | return 0; | |
5095 | } | |
24eab124 | 5096 | else if (*op_string == IMMEDIATE_PREFIX) |
ce8a8b2f | 5097 | { |
24eab124 AM |
5098 | ++op_string; |
5099 | if (i.types[this_operand] & JumpAbsolute) | |
5100 | { | |
d0b47220 | 5101 | as_bad (_("immediate operand illegal with absolute jump")); |
24eab124 AM |
5102 | return 0; |
5103 | } | |
5104 | if (!i386_immediate (op_string)) | |
5105 | return 0; | |
5106 | } | |
5107 | else if (is_digit_char (*op_string) | |
5108 | || is_identifier_char (*op_string) | |
e5cb08ac | 5109 | || *op_string == '(') |
24eab124 | 5110 | { |
47926f60 | 5111 | /* This is a memory reference of some sort. */ |
af6bdddf | 5112 | char *base_string; |
252b5132 | 5113 | |
47926f60 | 5114 | /* Start and end of displacement string expression (if found). */ |
eecb386c AM |
5115 | char *displacement_string_start; |
5116 | char *displacement_string_end; | |
252b5132 | 5117 | |
24eab124 | 5118 | do_memory_reference: |
24eab124 AM |
5119 | if ((i.mem_operands == 1 |
5120 | && (current_templates->start->opcode_modifier & IsString) == 0) | |
5121 | || i.mem_operands == 2) | |
5122 | { | |
5123 | as_bad (_("too many memory references for `%s'"), | |
5124 | current_templates->start->name); | |
5125 | return 0; | |
5126 | } | |
252b5132 | 5127 | |
24eab124 AM |
5128 | /* Check for base index form. We detect the base index form by |
5129 | looking for an ')' at the end of the operand, searching | |
5130 | for the '(' matching it, and finding a REGISTER_PREFIX or ',' | |
5131 | after the '('. */ | |
af6bdddf | 5132 | base_string = op_string + strlen (op_string); |
c3332e24 | 5133 | |
af6bdddf AM |
5134 | --base_string; |
5135 | if (is_space_char (*base_string)) | |
5136 | --base_string; | |
252b5132 | 5137 | |
47926f60 | 5138 | /* If we only have a displacement, set-up for it to be parsed later. */ |
af6bdddf AM |
5139 | displacement_string_start = op_string; |
5140 | displacement_string_end = base_string + 1; | |
252b5132 | 5141 | |
24eab124 AM |
5142 | if (*base_string == ')') |
5143 | { | |
af6bdddf | 5144 | char *temp_string; |
24eab124 AM |
5145 | unsigned int parens_balanced = 1; |
5146 | /* We've already checked that the number of left & right ()'s are | |
47926f60 | 5147 | equal, so this loop will not be infinite. */ |
24eab124 AM |
5148 | do |
5149 | { | |
5150 | base_string--; | |
5151 | if (*base_string == ')') | |
5152 | parens_balanced++; | |
5153 | if (*base_string == '(') | |
5154 | parens_balanced--; | |
5155 | } | |
5156 | while (parens_balanced); | |
c3332e24 | 5157 | |
af6bdddf | 5158 | temp_string = base_string; |
c3332e24 | 5159 | |
24eab124 | 5160 | /* Skip past '(' and whitespace. */ |
252b5132 RH |
5161 | ++base_string; |
5162 | if (is_space_char (*base_string)) | |
24eab124 | 5163 | ++base_string; |
252b5132 | 5164 | |
af6bdddf | 5165 | if (*base_string == ',' |
4eed87de AM |
5166 | || ((i.base_reg = parse_register (base_string, &end_op)) |
5167 | != NULL)) | |
252b5132 | 5168 | { |
af6bdddf | 5169 | displacement_string_end = temp_string; |
252b5132 | 5170 | |
af6bdddf | 5171 | i.types[this_operand] |= BaseIndex; |
252b5132 | 5172 | |
af6bdddf | 5173 | if (i.base_reg) |
24eab124 | 5174 | { |
24eab124 AM |
5175 | base_string = end_op; |
5176 | if (is_space_char (*base_string)) | |
5177 | ++base_string; | |
af6bdddf AM |
5178 | } |
5179 | ||
5180 | /* There may be an index reg or scale factor here. */ | |
5181 | if (*base_string == ',') | |
5182 | { | |
5183 | ++base_string; | |
5184 | if (is_space_char (*base_string)) | |
5185 | ++base_string; | |
5186 | ||
4eed87de AM |
5187 | if ((i.index_reg = parse_register (base_string, &end_op)) |
5188 | != NULL) | |
24eab124 | 5189 | { |
af6bdddf | 5190 | base_string = end_op; |
24eab124 AM |
5191 | if (is_space_char (*base_string)) |
5192 | ++base_string; | |
af6bdddf AM |
5193 | if (*base_string == ',') |
5194 | { | |
5195 | ++base_string; | |
5196 | if (is_space_char (*base_string)) | |
5197 | ++base_string; | |
5198 | } | |
e5cb08ac | 5199 | else if (*base_string != ')') |
af6bdddf | 5200 | { |
4eed87de AM |
5201 | as_bad (_("expecting `,' or `)' " |
5202 | "after index register in `%s'"), | |
af6bdddf AM |
5203 | operand_string); |
5204 | return 0; | |
5205 | } | |
24eab124 | 5206 | } |
af6bdddf | 5207 | else if (*base_string == REGISTER_PREFIX) |
24eab124 | 5208 | { |
af6bdddf | 5209 | as_bad (_("bad register name `%s'"), base_string); |
24eab124 AM |
5210 | return 0; |
5211 | } | |
252b5132 | 5212 | |
47926f60 | 5213 | /* Check for scale factor. */ |
551c1ca1 | 5214 | if (*base_string != ')') |
af6bdddf | 5215 | { |
551c1ca1 AM |
5216 | char *end_scale = i386_scale (base_string); |
5217 | ||
5218 | if (!end_scale) | |
af6bdddf | 5219 | return 0; |
24eab124 | 5220 | |
551c1ca1 | 5221 | base_string = end_scale; |
af6bdddf AM |
5222 | if (is_space_char (*base_string)) |
5223 | ++base_string; | |
5224 | if (*base_string != ')') | |
5225 | { | |
4eed87de AM |
5226 | as_bad (_("expecting `)' " |
5227 | "after scale factor in `%s'"), | |
af6bdddf AM |
5228 | operand_string); |
5229 | return 0; | |
5230 | } | |
5231 | } | |
5232 | else if (!i.index_reg) | |
24eab124 | 5233 | { |
4eed87de AM |
5234 | as_bad (_("expecting index register or scale factor " |
5235 | "after `,'; got '%c'"), | |
af6bdddf | 5236 | *base_string); |
24eab124 AM |
5237 | return 0; |
5238 | } | |
5239 | } | |
af6bdddf | 5240 | else if (*base_string != ')') |
24eab124 | 5241 | { |
4eed87de AM |
5242 | as_bad (_("expecting `,' or `)' " |
5243 | "after base register in `%s'"), | |
af6bdddf | 5244 | operand_string); |
24eab124 AM |
5245 | return 0; |
5246 | } | |
c3332e24 | 5247 | } |
af6bdddf | 5248 | else if (*base_string == REGISTER_PREFIX) |
c3332e24 | 5249 | { |
af6bdddf | 5250 | as_bad (_("bad register name `%s'"), base_string); |
24eab124 | 5251 | return 0; |
c3332e24 | 5252 | } |
24eab124 AM |
5253 | } |
5254 | ||
5255 | /* If there's an expression beginning the operand, parse it, | |
5256 | assuming displacement_string_start and | |
5257 | displacement_string_end are meaningful. */ | |
5258 | if (displacement_string_start != displacement_string_end) | |
5259 | { | |
5260 | if (!i386_displacement (displacement_string_start, | |
5261 | displacement_string_end)) | |
5262 | return 0; | |
5263 | } | |
5264 | ||
5265 | /* Special case for (%dx) while doing input/output op. */ | |
5266 | if (i.base_reg | |
5267 | && i.base_reg->reg_type == (Reg16 | InOutPortReg) | |
5268 | && i.index_reg == 0 | |
5269 | && i.log2_scale_factor == 0 | |
5270 | && i.seg[i.mem_operands] == 0 | |
5271 | && (i.types[this_operand] & Disp) == 0) | |
5272 | { | |
5273 | i.types[this_operand] = InOutPortReg; | |
5274 | return 1; | |
5275 | } | |
5276 | ||
eecb386c AM |
5277 | if (i386_index_check (operand_string) == 0) |
5278 | return 0; | |
24eab124 AM |
5279 | i.mem_operands++; |
5280 | } | |
5281 | else | |
ce8a8b2f AM |
5282 | { |
5283 | /* It's not a memory operand; argh! */ | |
24eab124 AM |
5284 | as_bad (_("invalid char %s beginning operand %d `%s'"), |
5285 | output_invalid (*op_string), | |
5286 | this_operand + 1, | |
5287 | op_string); | |
5288 | return 0; | |
5289 | } | |
47926f60 | 5290 | return 1; /* Normal return. */ |
252b5132 RH |
5291 | } |
5292 | \f | |
ee7fcc42 AM |
5293 | /* md_estimate_size_before_relax() |
5294 | ||
5295 | Called just before relax() for rs_machine_dependent frags. The x86 | |
5296 | assembler uses these frags to handle variable size jump | |
5297 | instructions. | |
5298 | ||
5299 | Any symbol that is now undefined will not become defined. | |
5300 | Return the correct fr_subtype in the frag. | |
5301 | Return the initial "guess for variable size of frag" to caller. | |
5302 | The guess is actually the growth beyond the fixed part. Whatever | |
5303 | we do to grow the fixed or variable part contributes to our | |
5304 | returned value. */ | |
5305 | ||
252b5132 RH |
5306 | int |
5307 | md_estimate_size_before_relax (fragP, segment) | |
29b0f896 AM |
5308 | fragS *fragP; |
5309 | segT segment; | |
252b5132 | 5310 | { |
252b5132 | 5311 | /* We've already got fragP->fr_subtype right; all we have to do is |
b98ef147 AM |
5312 | check for un-relaxable symbols. On an ELF system, we can't relax |
5313 | an externally visible symbol, because it may be overridden by a | |
5314 | shared library. */ | |
5315 | if (S_GET_SEGMENT (fragP->fr_symbol) != segment | |
6d249963 | 5316 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
718ddfc0 | 5317 | || (IS_ELF |
31312f95 AM |
5318 | && (S_IS_EXTERNAL (fragP->fr_symbol) |
5319 | || S_IS_WEAK (fragP->fr_symbol))) | |
b98ef147 AM |
5320 | #endif |
5321 | ) | |
252b5132 | 5322 | { |
b98ef147 AM |
5323 | /* Symbol is undefined in this segment, or we need to keep a |
5324 | reloc so that weak symbols can be overridden. */ | |
5325 | int size = (fragP->fr_subtype & CODE16) ? 2 : 4; | |
f86103b7 | 5326 | enum bfd_reloc_code_real reloc_type; |
ee7fcc42 AM |
5327 | unsigned char *opcode; |
5328 | int old_fr_fix; | |
f6af82bd | 5329 | |
ee7fcc42 AM |
5330 | if (fragP->fr_var != NO_RELOC) |
5331 | reloc_type = fragP->fr_var; | |
b98ef147 | 5332 | else if (size == 2) |
f6af82bd AM |
5333 | reloc_type = BFD_RELOC_16_PCREL; |
5334 | else | |
5335 | reloc_type = BFD_RELOC_32_PCREL; | |
252b5132 | 5336 | |
ee7fcc42 AM |
5337 | old_fr_fix = fragP->fr_fix; |
5338 | opcode = (unsigned char *) fragP->fr_opcode; | |
5339 | ||
fddf5b5b | 5340 | switch (TYPE_FROM_RELAX_STATE (fragP->fr_subtype)) |
252b5132 | 5341 | { |
fddf5b5b AM |
5342 | case UNCOND_JUMP: |
5343 | /* Make jmp (0xeb) a (d)word displacement jump. */ | |
47926f60 | 5344 | opcode[0] = 0xe9; |
252b5132 | 5345 | fragP->fr_fix += size; |
062cd5e7 AS |
5346 | fix_new (fragP, old_fr_fix, size, |
5347 | fragP->fr_symbol, | |
5348 | fragP->fr_offset, 1, | |
5349 | reloc_type); | |
252b5132 RH |
5350 | break; |
5351 | ||
fddf5b5b | 5352 | case COND_JUMP86: |
412167cb AM |
5353 | if (size == 2 |
5354 | && (!no_cond_jump_promotion || fragP->fr_var != NO_RELOC)) | |
fddf5b5b AM |
5355 | { |
5356 | /* Negate the condition, and branch past an | |
5357 | unconditional jump. */ | |
5358 | opcode[0] ^= 1; | |
5359 | opcode[1] = 3; | |
5360 | /* Insert an unconditional jump. */ | |
5361 | opcode[2] = 0xe9; | |
5362 | /* We added two extra opcode bytes, and have a two byte | |
5363 | offset. */ | |
5364 | fragP->fr_fix += 2 + 2; | |
062cd5e7 AS |
5365 | fix_new (fragP, old_fr_fix + 2, 2, |
5366 | fragP->fr_symbol, | |
5367 | fragP->fr_offset, 1, | |
5368 | reloc_type); | |
fddf5b5b AM |
5369 | break; |
5370 | } | |
5371 | /* Fall through. */ | |
5372 | ||
5373 | case COND_JUMP: | |
412167cb AM |
5374 | if (no_cond_jump_promotion && fragP->fr_var == NO_RELOC) |
5375 | { | |
3e02c1cc AM |
5376 | fixS *fixP; |
5377 | ||
412167cb | 5378 | fragP->fr_fix += 1; |
3e02c1cc AM |
5379 | fixP = fix_new (fragP, old_fr_fix, 1, |
5380 | fragP->fr_symbol, | |
5381 | fragP->fr_offset, 1, | |
5382 | BFD_RELOC_8_PCREL); | |
5383 | fixP->fx_signed = 1; | |
412167cb AM |
5384 | break; |
5385 | } | |
93c2a809 | 5386 | |
24eab124 | 5387 | /* This changes the byte-displacement jump 0x7N |
fddf5b5b | 5388 | to the (d)word-displacement jump 0x0f,0x8N. */ |
252b5132 | 5389 | opcode[1] = opcode[0] + 0x10; |
f6af82bd | 5390 | opcode[0] = TWO_BYTE_OPCODE_ESCAPE; |
47926f60 KH |
5391 | /* We've added an opcode byte. */ |
5392 | fragP->fr_fix += 1 + size; | |
062cd5e7 AS |
5393 | fix_new (fragP, old_fr_fix + 1, size, |
5394 | fragP->fr_symbol, | |
5395 | fragP->fr_offset, 1, | |
5396 | reloc_type); | |
252b5132 | 5397 | break; |
fddf5b5b AM |
5398 | |
5399 | default: | |
5400 | BAD_CASE (fragP->fr_subtype); | |
5401 | break; | |
252b5132 RH |
5402 | } |
5403 | frag_wane (fragP); | |
ee7fcc42 | 5404 | return fragP->fr_fix - old_fr_fix; |
252b5132 | 5405 | } |
93c2a809 | 5406 | |
93c2a809 AM |
5407 | /* Guess size depending on current relax state. Initially the relax |
5408 | state will correspond to a short jump and we return 1, because | |
5409 | the variable part of the frag (the branch offset) is one byte | |
5410 | long. However, we can relax a section more than once and in that | |
5411 | case we must either set fr_subtype back to the unrelaxed state, | |
5412 | or return the value for the appropriate branch. */ | |
5413 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
ee7fcc42 AM |
5414 | } |
5415 | ||
47926f60 KH |
5416 | /* Called after relax() is finished. |
5417 | ||
5418 | In: Address of frag. | |
5419 | fr_type == rs_machine_dependent. | |
5420 | fr_subtype is what the address relaxed to. | |
5421 | ||
5422 | Out: Any fixSs and constants are set up. | |
5423 | Caller will turn frag into a ".space 0". */ | |
5424 | ||
252b5132 RH |
5425 | void |
5426 | md_convert_frag (abfd, sec, fragP) | |
ab9da554 ILT |
5427 | bfd *abfd ATTRIBUTE_UNUSED; |
5428 | segT sec ATTRIBUTE_UNUSED; | |
29b0f896 | 5429 | fragS *fragP; |
252b5132 | 5430 | { |
29b0f896 | 5431 | unsigned char *opcode; |
252b5132 | 5432 | unsigned char *where_to_put_displacement = NULL; |
847f7ad4 AM |
5433 | offsetT target_address; |
5434 | offsetT opcode_address; | |
252b5132 | 5435 | unsigned int extension = 0; |
847f7ad4 | 5436 | offsetT displacement_from_opcode_start; |
252b5132 RH |
5437 | |
5438 | opcode = (unsigned char *) fragP->fr_opcode; | |
5439 | ||
47926f60 | 5440 | /* Address we want to reach in file space. */ |
252b5132 | 5441 | target_address = S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset; |
252b5132 | 5442 | |
47926f60 | 5443 | /* Address opcode resides at in file space. */ |
252b5132 RH |
5444 | opcode_address = fragP->fr_address + fragP->fr_fix; |
5445 | ||
47926f60 | 5446 | /* Displacement from opcode start to fill into instruction. */ |
252b5132 RH |
5447 | displacement_from_opcode_start = target_address - opcode_address; |
5448 | ||
fddf5b5b | 5449 | if ((fragP->fr_subtype & BIG) == 0) |
252b5132 | 5450 | { |
47926f60 KH |
5451 | /* Don't have to change opcode. */ |
5452 | extension = 1; /* 1 opcode + 1 displacement */ | |
252b5132 | 5453 | where_to_put_displacement = &opcode[1]; |
fddf5b5b AM |
5454 | } |
5455 | else | |
5456 | { | |
5457 | if (no_cond_jump_promotion | |
5458 | && TYPE_FROM_RELAX_STATE (fragP->fr_subtype) != UNCOND_JUMP) | |
4eed87de AM |
5459 | as_warn_where (fragP->fr_file, fragP->fr_line, |
5460 | _("long jump required")); | |
252b5132 | 5461 | |
fddf5b5b AM |
5462 | switch (fragP->fr_subtype) |
5463 | { | |
5464 | case ENCODE_RELAX_STATE (UNCOND_JUMP, BIG): | |
5465 | extension = 4; /* 1 opcode + 4 displacement */ | |
5466 | opcode[0] = 0xe9; | |
5467 | where_to_put_displacement = &opcode[1]; | |
5468 | break; | |
252b5132 | 5469 | |
fddf5b5b AM |
5470 | case ENCODE_RELAX_STATE (UNCOND_JUMP, BIG16): |
5471 | extension = 2; /* 1 opcode + 2 displacement */ | |
5472 | opcode[0] = 0xe9; | |
5473 | where_to_put_displacement = &opcode[1]; | |
5474 | break; | |
252b5132 | 5475 | |
fddf5b5b AM |
5476 | case ENCODE_RELAX_STATE (COND_JUMP, BIG): |
5477 | case ENCODE_RELAX_STATE (COND_JUMP86, BIG): | |
5478 | extension = 5; /* 2 opcode + 4 displacement */ | |
5479 | opcode[1] = opcode[0] + 0x10; | |
5480 | opcode[0] = TWO_BYTE_OPCODE_ESCAPE; | |
5481 | where_to_put_displacement = &opcode[2]; | |
5482 | break; | |
252b5132 | 5483 | |
fddf5b5b AM |
5484 | case ENCODE_RELAX_STATE (COND_JUMP, BIG16): |
5485 | extension = 3; /* 2 opcode + 2 displacement */ | |
5486 | opcode[1] = opcode[0] + 0x10; | |
5487 | opcode[0] = TWO_BYTE_OPCODE_ESCAPE; | |
5488 | where_to_put_displacement = &opcode[2]; | |
5489 | break; | |
252b5132 | 5490 | |
fddf5b5b AM |
5491 | case ENCODE_RELAX_STATE (COND_JUMP86, BIG16): |
5492 | extension = 4; | |
5493 | opcode[0] ^= 1; | |
5494 | opcode[1] = 3; | |
5495 | opcode[2] = 0xe9; | |
5496 | where_to_put_displacement = &opcode[3]; | |
5497 | break; | |
5498 | ||
5499 | default: | |
5500 | BAD_CASE (fragP->fr_subtype); | |
5501 | break; | |
5502 | } | |
252b5132 | 5503 | } |
fddf5b5b | 5504 | |
7b81dfbb AJ |
5505 | /* If size if less then four we are sure that the operand fits, |
5506 | but if it's 4, then it could be that the displacement is larger | |
5507 | then -/+ 2GB. */ | |
5508 | if (DISP_SIZE_FROM_RELAX_STATE (fragP->fr_subtype) == 4 | |
5509 | && object_64bit | |
5510 | && ((addressT) (displacement_from_opcode_start - extension | |
4eed87de AM |
5511 | + ((addressT) 1 << 31)) |
5512 | > (((addressT) 2 << 31) - 1))) | |
7b81dfbb AJ |
5513 | { |
5514 | as_bad_where (fragP->fr_file, fragP->fr_line, | |
5515 | _("jump target out of range")); | |
5516 | /* Make us emit 0. */ | |
5517 | displacement_from_opcode_start = extension; | |
5518 | } | |
47926f60 | 5519 | /* Now put displacement after opcode. */ |
252b5132 RH |
5520 | md_number_to_chars ((char *) where_to_put_displacement, |
5521 | (valueT) (displacement_from_opcode_start - extension), | |
fddf5b5b | 5522 | DISP_SIZE_FROM_RELAX_STATE (fragP->fr_subtype)); |
252b5132 RH |
5523 | fragP->fr_fix += extension; |
5524 | } | |
5525 | \f | |
47926f60 KH |
5526 | /* Size of byte displacement jmp. */ |
5527 | int md_short_jump_size = 2; | |
5528 | ||
5529 | /* Size of dword displacement jmp. */ | |
5530 | int md_long_jump_size = 5; | |
252b5132 | 5531 | |
252b5132 RH |
5532 | void |
5533 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
5534 | char *ptr; | |
5535 | addressT from_addr, to_addr; | |
ab9da554 ILT |
5536 | fragS *frag ATTRIBUTE_UNUSED; |
5537 | symbolS *to_symbol ATTRIBUTE_UNUSED; | |
252b5132 | 5538 | { |
847f7ad4 | 5539 | offsetT offset; |
252b5132 RH |
5540 | |
5541 | offset = to_addr - (from_addr + 2); | |
47926f60 KH |
5542 | /* Opcode for byte-disp jump. */ |
5543 | md_number_to_chars (ptr, (valueT) 0xeb, 1); | |
252b5132 RH |
5544 | md_number_to_chars (ptr + 1, (valueT) offset, 1); |
5545 | } | |
5546 | ||
5547 | void | |
5548 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
5549 | char *ptr; | |
5550 | addressT from_addr, to_addr; | |
a38cf1db AM |
5551 | fragS *frag ATTRIBUTE_UNUSED; |
5552 | symbolS *to_symbol ATTRIBUTE_UNUSED; | |
252b5132 | 5553 | { |
847f7ad4 | 5554 | offsetT offset; |
252b5132 | 5555 | |
a38cf1db AM |
5556 | offset = to_addr - (from_addr + 5); |
5557 | md_number_to_chars (ptr, (valueT) 0xe9, 1); | |
5558 | md_number_to_chars (ptr + 1, (valueT) offset, 4); | |
252b5132 RH |
5559 | } |
5560 | \f | |
5561 | /* Apply a fixup (fixS) to segment data, once it has been determined | |
5562 | by our caller that we have all the info we need to fix it up. | |
5563 | ||
5564 | On the 386, immediates, displacements, and data pointers are all in | |
5565 | the same (little-endian) format, so we don't need to care about which | |
5566 | we are handling. */ | |
5567 | ||
94f592af | 5568 | void |
55cf6793 | 5569 | md_apply_fix (fixP, valP, seg) |
47926f60 KH |
5570 | /* The fix we're to put in. */ |
5571 | fixS *fixP; | |
47926f60 | 5572 | /* Pointer to the value of the bits. */ |
c6682705 | 5573 | valueT *valP; |
47926f60 KH |
5574 | /* Segment fix is from. */ |
5575 | segT seg ATTRIBUTE_UNUSED; | |
252b5132 | 5576 | { |
94f592af | 5577 | char *p = fixP->fx_where + fixP->fx_frag->fr_literal; |
c6682705 | 5578 | valueT value = *valP; |
252b5132 | 5579 | |
f86103b7 | 5580 | #if !defined (TE_Mach) |
93382f6d AM |
5581 | if (fixP->fx_pcrel) |
5582 | { | |
5583 | switch (fixP->fx_r_type) | |
5584 | { | |
5865bb77 ILT |
5585 | default: |
5586 | break; | |
5587 | ||
d6ab8113 JB |
5588 | case BFD_RELOC_64: |
5589 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
5590 | break; | |
93382f6d | 5591 | case BFD_RELOC_32: |
ae8887b5 | 5592 | case BFD_RELOC_X86_64_32S: |
93382f6d AM |
5593 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
5594 | break; | |
5595 | case BFD_RELOC_16: | |
5596 | fixP->fx_r_type = BFD_RELOC_16_PCREL; | |
5597 | break; | |
5598 | case BFD_RELOC_8: | |
5599 | fixP->fx_r_type = BFD_RELOC_8_PCREL; | |
5600 | break; | |
5601 | } | |
5602 | } | |
252b5132 | 5603 | |
a161fe53 | 5604 | if (fixP->fx_addsy != NULL |
31312f95 | 5605 | && (fixP->fx_r_type == BFD_RELOC_32_PCREL |
d6ab8113 | 5606 | || fixP->fx_r_type == BFD_RELOC_64_PCREL |
31312f95 AM |
5607 | || fixP->fx_r_type == BFD_RELOC_16_PCREL |
5608 | || fixP->fx_r_type == BFD_RELOC_8_PCREL) | |
5609 | && !use_rela_relocations) | |
252b5132 | 5610 | { |
31312f95 AM |
5611 | /* This is a hack. There should be a better way to handle this. |
5612 | This covers for the fact that bfd_install_relocation will | |
5613 | subtract the current location (for partial_inplace, PC relative | |
5614 | relocations); see more below. */ | |
252b5132 | 5615 | #ifndef OBJ_AOUT |
718ddfc0 | 5616 | if (IS_ELF |
252b5132 RH |
5617 | #ifdef TE_PE |
5618 | || OUTPUT_FLAVOR == bfd_target_coff_flavour | |
5619 | #endif | |
5620 | ) | |
5621 | value += fixP->fx_where + fixP->fx_frag->fr_address; | |
5622 | #endif | |
5623 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
718ddfc0 | 5624 | if (IS_ELF) |
252b5132 | 5625 | { |
6539b54b | 5626 | segT sym_seg = S_GET_SEGMENT (fixP->fx_addsy); |
2f66722d | 5627 | |
6539b54b | 5628 | if ((sym_seg == seg |
2f66722d | 5629 | || (symbol_section_p (fixP->fx_addsy) |
6539b54b | 5630 | && sym_seg != absolute_section)) |
ae6063d4 | 5631 | && !generic_force_reloc (fixP)) |
2f66722d AM |
5632 | { |
5633 | /* Yes, we add the values in twice. This is because | |
6539b54b AM |
5634 | bfd_install_relocation subtracts them out again. I think |
5635 | bfd_install_relocation is broken, but I don't dare change | |
2f66722d AM |
5636 | it. FIXME. */ |
5637 | value += fixP->fx_where + fixP->fx_frag->fr_address; | |
5638 | } | |
252b5132 RH |
5639 | } |
5640 | #endif | |
5641 | #if defined (OBJ_COFF) && defined (TE_PE) | |
977cdf5a NC |
5642 | /* For some reason, the PE format does not store a |
5643 | section address offset for a PC relative symbol. */ | |
5644 | if (S_GET_SEGMENT (fixP->fx_addsy) != seg | |
7be1c489 | 5645 | || S_IS_WEAK (fixP->fx_addsy)) |
252b5132 RH |
5646 | value += md_pcrel_from (fixP); |
5647 | #endif | |
5648 | } | |
5649 | ||
5650 | /* Fix a few things - the dynamic linker expects certain values here, | |
0234cb7c | 5651 | and we must not disappoint it. */ |
252b5132 | 5652 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
718ddfc0 | 5653 | if (IS_ELF && fixP->fx_addsy) |
47926f60 KH |
5654 | switch (fixP->fx_r_type) |
5655 | { | |
5656 | case BFD_RELOC_386_PLT32: | |
3e73aa7c | 5657 | case BFD_RELOC_X86_64_PLT32: |
47926f60 KH |
5658 | /* Make the jump instruction point to the address of the operand. At |
5659 | runtime we merely add the offset to the actual PLT entry. */ | |
5660 | value = -4; | |
5661 | break; | |
31312f95 | 5662 | |
13ae64f3 JJ |
5663 | case BFD_RELOC_386_TLS_GD: |
5664 | case BFD_RELOC_386_TLS_LDM: | |
13ae64f3 | 5665 | case BFD_RELOC_386_TLS_IE_32: |
37e55690 JJ |
5666 | case BFD_RELOC_386_TLS_IE: |
5667 | case BFD_RELOC_386_TLS_GOTIE: | |
67a4f2b7 | 5668 | case BFD_RELOC_386_TLS_GOTDESC: |
bffbf940 JJ |
5669 | case BFD_RELOC_X86_64_TLSGD: |
5670 | case BFD_RELOC_X86_64_TLSLD: | |
5671 | case BFD_RELOC_X86_64_GOTTPOFF: | |
67a4f2b7 | 5672 | case BFD_RELOC_X86_64_GOTPC32_TLSDESC: |
00f7efb6 JJ |
5673 | value = 0; /* Fully resolved at runtime. No addend. */ |
5674 | /* Fallthrough */ | |
5675 | case BFD_RELOC_386_TLS_LE: | |
5676 | case BFD_RELOC_386_TLS_LDO_32: | |
5677 | case BFD_RELOC_386_TLS_LE_32: | |
5678 | case BFD_RELOC_X86_64_DTPOFF32: | |
d6ab8113 | 5679 | case BFD_RELOC_X86_64_DTPOFF64: |
00f7efb6 | 5680 | case BFD_RELOC_X86_64_TPOFF32: |
d6ab8113 | 5681 | case BFD_RELOC_X86_64_TPOFF64: |
00f7efb6 JJ |
5682 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
5683 | break; | |
5684 | ||
67a4f2b7 AO |
5685 | case BFD_RELOC_386_TLS_DESC_CALL: |
5686 | case BFD_RELOC_X86_64_TLSDESC_CALL: | |
5687 | value = 0; /* Fully resolved at runtime. No addend. */ | |
5688 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
5689 | fixP->fx_done = 0; | |
5690 | return; | |
5691 | ||
00f7efb6 JJ |
5692 | case BFD_RELOC_386_GOT32: |
5693 | case BFD_RELOC_X86_64_GOT32: | |
47926f60 KH |
5694 | value = 0; /* Fully resolved at runtime. No addend. */ |
5695 | break; | |
47926f60 KH |
5696 | |
5697 | case BFD_RELOC_VTABLE_INHERIT: | |
5698 | case BFD_RELOC_VTABLE_ENTRY: | |
5699 | fixP->fx_done = 0; | |
94f592af | 5700 | return; |
47926f60 KH |
5701 | |
5702 | default: | |
5703 | break; | |
5704 | } | |
5705 | #endif /* defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) */ | |
c6682705 | 5706 | *valP = value; |
f86103b7 | 5707 | #endif /* !defined (TE_Mach) */ |
3e73aa7c | 5708 | |
3e73aa7c | 5709 | /* Are we finished with this relocation now? */ |
c6682705 | 5710 | if (fixP->fx_addsy == NULL) |
3e73aa7c JH |
5711 | fixP->fx_done = 1; |
5712 | else if (use_rela_relocations) | |
5713 | { | |
5714 | fixP->fx_no_overflow = 1; | |
062cd5e7 AS |
5715 | /* Remember value for tc_gen_reloc. */ |
5716 | fixP->fx_addnumber = value; | |
3e73aa7c JH |
5717 | value = 0; |
5718 | } | |
f86103b7 | 5719 | |
94f592af | 5720 | md_number_to_chars (p, value, fixP->fx_size); |
252b5132 | 5721 | } |
252b5132 | 5722 | \f |
252b5132 RH |
5723 | #define MAX_LITTLENUMS 6 |
5724 | ||
47926f60 KH |
5725 | /* Turn the string pointed to by litP into a floating point constant |
5726 | of type TYPE, and emit the appropriate bytes. The number of | |
5727 | LITTLENUMS emitted is stored in *SIZEP. An error message is | |
5728 | returned, or NULL on OK. */ | |
5729 | ||
252b5132 RH |
5730 | char * |
5731 | md_atof (type, litP, sizeP) | |
2ab9b79e | 5732 | int type; |
252b5132 RH |
5733 | char *litP; |
5734 | int *sizeP; | |
5735 | { | |
5736 | int prec; | |
5737 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
5738 | LITTLENUM_TYPE *wordP; | |
5739 | char *t; | |
5740 | ||
5741 | switch (type) | |
5742 | { | |
5743 | case 'f': | |
5744 | case 'F': | |
5745 | prec = 2; | |
5746 | break; | |
5747 | ||
5748 | case 'd': | |
5749 | case 'D': | |
5750 | prec = 4; | |
5751 | break; | |
5752 | ||
5753 | case 'x': | |
5754 | case 'X': | |
5755 | prec = 5; | |
5756 | break; | |
5757 | ||
5758 | default: | |
5759 | *sizeP = 0; | |
5760 | return _("Bad call to md_atof ()"); | |
5761 | } | |
5762 | t = atof_ieee (input_line_pointer, type, words); | |
5763 | if (t) | |
5764 | input_line_pointer = t; | |
5765 | ||
5766 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
5767 | /* This loops outputs the LITTLENUMs in REVERSE order; in accord with | |
5768 | the bigendian 386. */ | |
5769 | for (wordP = words + prec - 1; prec--;) | |
5770 | { | |
5771 | md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE)); | |
5772 | litP += sizeof (LITTLENUM_TYPE); | |
5773 | } | |
5774 | return 0; | |
5775 | } | |
5776 | \f | |
2d545b82 | 5777 | static char output_invalid_buf[sizeof (unsigned char) * 2 + 6]; |
252b5132 | 5778 | |
252b5132 | 5779 | static char * |
e3bb37b5 | 5780 | output_invalid (int c) |
252b5132 | 5781 | { |
3882b010 | 5782 | if (ISPRINT (c)) |
f9f21a03 L |
5783 | snprintf (output_invalid_buf, sizeof (output_invalid_buf), |
5784 | "'%c'", c); | |
252b5132 | 5785 | else |
f9f21a03 | 5786 | snprintf (output_invalid_buf, sizeof (output_invalid_buf), |
2d545b82 | 5787 | "(0x%x)", (unsigned char) c); |
252b5132 RH |
5788 | return output_invalid_buf; |
5789 | } | |
5790 | ||
af6bdddf | 5791 | /* REG_STRING starts *before* REGISTER_PREFIX. */ |
252b5132 RH |
5792 | |
5793 | static const reg_entry * | |
4d1bb795 | 5794 | parse_real_register (char *reg_string, char **end_op) |
252b5132 | 5795 | { |
af6bdddf AM |
5796 | char *s = reg_string; |
5797 | char *p; | |
252b5132 RH |
5798 | char reg_name_given[MAX_REG_NAME_SIZE + 1]; |
5799 | const reg_entry *r; | |
5800 | ||
5801 | /* Skip possible REGISTER_PREFIX and possible whitespace. */ | |
5802 | if (*s == REGISTER_PREFIX) | |
5803 | ++s; | |
5804 | ||
5805 | if (is_space_char (*s)) | |
5806 | ++s; | |
5807 | ||
5808 | p = reg_name_given; | |
af6bdddf | 5809 | while ((*p++ = register_chars[(unsigned char) *s]) != '\0') |
252b5132 RH |
5810 | { |
5811 | if (p >= reg_name_given + MAX_REG_NAME_SIZE) | |
af6bdddf AM |
5812 | return (const reg_entry *) NULL; |
5813 | s++; | |
252b5132 RH |
5814 | } |
5815 | ||
6588847e DN |
5816 | /* For naked regs, make sure that we are not dealing with an identifier. |
5817 | This prevents confusing an identifier like `eax_var' with register | |
5818 | `eax'. */ | |
5819 | if (allow_naked_reg && identifier_chars[(unsigned char) *s]) | |
5820 | return (const reg_entry *) NULL; | |
5821 | ||
af6bdddf | 5822 | *end_op = s; |
252b5132 RH |
5823 | |
5824 | r = (const reg_entry *) hash_find (reg_hash, reg_name_given); | |
5825 | ||
5f47d35b | 5826 | /* Handle floating point regs, allowing spaces in the (i) part. */ |
47926f60 | 5827 | if (r == i386_regtab /* %st is first entry of table */) |
5f47d35b | 5828 | { |
5f47d35b AM |
5829 | if (is_space_char (*s)) |
5830 | ++s; | |
5831 | if (*s == '(') | |
5832 | { | |
af6bdddf | 5833 | ++s; |
5f47d35b AM |
5834 | if (is_space_char (*s)) |
5835 | ++s; | |
5836 | if (*s >= '0' && *s <= '7') | |
5837 | { | |
db557034 | 5838 | int fpr = *s - '0'; |
af6bdddf | 5839 | ++s; |
5f47d35b AM |
5840 | if (is_space_char (*s)) |
5841 | ++s; | |
5842 | if (*s == ')') | |
5843 | { | |
5844 | *end_op = s + 1; | |
db557034 AM |
5845 | r = hash_find (reg_hash, "st(0)"); |
5846 | know (r); | |
5847 | return r + fpr; | |
5f47d35b | 5848 | } |
5f47d35b | 5849 | } |
47926f60 | 5850 | /* We have "%st(" then garbage. */ |
5f47d35b AM |
5851 | return (const reg_entry *) NULL; |
5852 | } | |
5853 | } | |
5854 | ||
1ae00879 | 5855 | if (r != NULL |
20f0a1fc | 5856 | && ((r->reg_flags & (RegRex64 | RegRex)) | (r->reg_type & Reg64)) != 0 |
c4a530c5 | 5857 | && (r->reg_type != Control || !(cpu_arch_flags & CpuSledgehammer)) |
1ae00879 | 5858 | && flag_code != CODE_64BIT) |
20f0a1fc | 5859 | return (const reg_entry *) NULL; |
1ae00879 | 5860 | |
252b5132 RH |
5861 | return r; |
5862 | } | |
4d1bb795 JB |
5863 | |
5864 | /* REG_STRING starts *before* REGISTER_PREFIX. */ | |
5865 | ||
5866 | static const reg_entry * | |
5867 | parse_register (char *reg_string, char **end_op) | |
5868 | { | |
5869 | const reg_entry *r; | |
5870 | ||
5871 | if (*reg_string == REGISTER_PREFIX || allow_naked_reg) | |
5872 | r = parse_real_register (reg_string, end_op); | |
5873 | else | |
5874 | r = NULL; | |
5875 | if (!r) | |
5876 | { | |
5877 | char *save = input_line_pointer; | |
5878 | char c; | |
5879 | symbolS *symbolP; | |
5880 | ||
5881 | input_line_pointer = reg_string; | |
5882 | c = get_symbol_end (); | |
5883 | symbolP = symbol_find (reg_string); | |
5884 | if (symbolP && S_GET_SEGMENT (symbolP) == reg_section) | |
5885 | { | |
5886 | const expressionS *e = symbol_get_value_expression (symbolP); | |
5887 | ||
5888 | know (e->X_op == O_register); | |
4eed87de | 5889 | know (e->X_add_number >= 0 |
c3fe08fa | 5890 | && (valueT) e->X_add_number < i386_regtab_size); |
4d1bb795 JB |
5891 | r = i386_regtab + e->X_add_number; |
5892 | *end_op = input_line_pointer; | |
5893 | } | |
5894 | *input_line_pointer = c; | |
5895 | input_line_pointer = save; | |
5896 | } | |
5897 | return r; | |
5898 | } | |
5899 | ||
5900 | int | |
5901 | i386_parse_name (char *name, expressionS *e, char *nextcharP) | |
5902 | { | |
5903 | const reg_entry *r; | |
5904 | char *end = input_line_pointer; | |
5905 | ||
5906 | *end = *nextcharP; | |
5907 | r = parse_register (name, &input_line_pointer); | |
5908 | if (r && end <= input_line_pointer) | |
5909 | { | |
5910 | *nextcharP = *input_line_pointer; | |
5911 | *input_line_pointer = 0; | |
5912 | e->X_op = O_register; | |
5913 | e->X_add_number = r - i386_regtab; | |
5914 | return 1; | |
5915 | } | |
5916 | input_line_pointer = end; | |
5917 | *end = 0; | |
5918 | return 0; | |
5919 | } | |
5920 | ||
5921 | void | |
5922 | md_operand (expressionS *e) | |
5923 | { | |
5924 | if (*input_line_pointer == REGISTER_PREFIX) | |
5925 | { | |
5926 | char *end; | |
5927 | const reg_entry *r = parse_real_register (input_line_pointer, &end); | |
5928 | ||
5929 | if (r) | |
5930 | { | |
5931 | e->X_op = O_register; | |
5932 | e->X_add_number = r - i386_regtab; | |
5933 | input_line_pointer = end; | |
5934 | } | |
5935 | } | |
5936 | } | |
5937 | ||
252b5132 | 5938 | \f |
4cc782b5 | 5939 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
12b55ccc | 5940 | const char *md_shortopts = "kVQ:sqn"; |
252b5132 | 5941 | #else |
12b55ccc | 5942 | const char *md_shortopts = "qn"; |
252b5132 | 5943 | #endif |
6e0b89ee | 5944 | |
3e73aa7c | 5945 | #define OPTION_32 (OPTION_MD_BASE + 0) |
b3b91714 AM |
5946 | #define OPTION_64 (OPTION_MD_BASE + 1) |
5947 | #define OPTION_DIVIDE (OPTION_MD_BASE + 2) | |
9103f4f4 L |
5948 | #define OPTION_MARCH (OPTION_MD_BASE + 3) |
5949 | #define OPTION_MTUNE (OPTION_MD_BASE + 4) | |
b3b91714 | 5950 | |
99ad8390 NC |
5951 | struct option md_longopts[] = |
5952 | { | |
3e73aa7c | 5953 | {"32", no_argument, NULL, OPTION_32}, |
99ad8390 | 5954 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined(TE_PEP) |
3e73aa7c | 5955 | {"64", no_argument, NULL, OPTION_64}, |
6e0b89ee | 5956 | #endif |
b3b91714 | 5957 | {"divide", no_argument, NULL, OPTION_DIVIDE}, |
9103f4f4 L |
5958 | {"march", required_argument, NULL, OPTION_MARCH}, |
5959 | {"mtune", required_argument, NULL, OPTION_MTUNE}, | |
252b5132 RH |
5960 | {NULL, no_argument, NULL, 0} |
5961 | }; | |
5962 | size_t md_longopts_size = sizeof (md_longopts); | |
5963 | ||
5964 | int | |
9103f4f4 | 5965 | md_parse_option (int c, char *arg) |
252b5132 | 5966 | { |
9103f4f4 L |
5967 | unsigned int i; |
5968 | ||
252b5132 RH |
5969 | switch (c) |
5970 | { | |
12b55ccc L |
5971 | case 'n': |
5972 | optimize_align_code = 0; | |
5973 | break; | |
5974 | ||
a38cf1db AM |
5975 | case 'q': |
5976 | quiet_warnings = 1; | |
252b5132 RH |
5977 | break; |
5978 | ||
5979 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
a38cf1db AM |
5980 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
5981 | should be emitted or not. FIXME: Not implemented. */ | |
5982 | case 'Q': | |
252b5132 RH |
5983 | break; |
5984 | ||
5985 | /* -V: SVR4 argument to print version ID. */ | |
5986 | case 'V': | |
5987 | print_version_id (); | |
5988 | break; | |
5989 | ||
a38cf1db AM |
5990 | /* -k: Ignore for FreeBSD compatibility. */ |
5991 | case 'k': | |
252b5132 | 5992 | break; |
4cc782b5 ILT |
5993 | |
5994 | case 's': | |
5995 | /* -s: On i386 Solaris, this tells the native assembler to use | |
29b0f896 | 5996 | .stab instead of .stab.excl. We always use .stab anyhow. */ |
4cc782b5 | 5997 | break; |
99ad8390 NC |
5998 | #endif |
5999 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined(TE_PEP) | |
3e73aa7c JH |
6000 | case OPTION_64: |
6001 | { | |
6002 | const char **list, **l; | |
6003 | ||
3e73aa7c JH |
6004 | list = bfd_target_list (); |
6005 | for (l = list; *l != NULL; l++) | |
8620418b | 6006 | if (CONST_STRNEQ (*l, "elf64-x86-64") |
99ad8390 NC |
6007 | || strcmp (*l, "coff-x86-64") == 0 |
6008 | || strcmp (*l, "pe-x86-64") == 0 | |
6009 | || strcmp (*l, "pei-x86-64") == 0) | |
6e0b89ee AM |
6010 | { |
6011 | default_arch = "x86_64"; | |
6012 | break; | |
6013 | } | |
3e73aa7c | 6014 | if (*l == NULL) |
6e0b89ee | 6015 | as_fatal (_("No compiled in support for x86_64")); |
3e73aa7c JH |
6016 | free (list); |
6017 | } | |
6018 | break; | |
6019 | #endif | |
252b5132 | 6020 | |
6e0b89ee AM |
6021 | case OPTION_32: |
6022 | default_arch = "i386"; | |
6023 | break; | |
6024 | ||
b3b91714 AM |
6025 | case OPTION_DIVIDE: |
6026 | #ifdef SVR4_COMMENT_CHARS | |
6027 | { | |
6028 | char *n, *t; | |
6029 | const char *s; | |
6030 | ||
6031 | n = (char *) xmalloc (strlen (i386_comment_chars) + 1); | |
6032 | t = n; | |
6033 | for (s = i386_comment_chars; *s != '\0'; s++) | |
6034 | if (*s != '/') | |
6035 | *t++ = *s; | |
6036 | *t = '\0'; | |
6037 | i386_comment_chars = n; | |
6038 | } | |
6039 | #endif | |
6040 | break; | |
6041 | ||
9103f4f4 L |
6042 | case OPTION_MARCH: |
6043 | if (*arg == '.') | |
6044 | as_fatal (_("Invalid -march= option: `%s'"), arg); | |
6045 | for (i = 0; i < ARRAY_SIZE (cpu_arch); i++) | |
6046 | { | |
6047 | if (strcmp (arg, cpu_arch [i].name) == 0) | |
6048 | { | |
ccc9c027 | 6049 | cpu_arch_isa = cpu_arch[i].type; |
9103f4f4 | 6050 | cpu_arch_isa_flags = cpu_arch[i].flags; |
ccc9c027 L |
6051 | if (!cpu_arch_tune_set) |
6052 | { | |
6053 | cpu_arch_tune = cpu_arch_isa; | |
6054 | cpu_arch_tune_flags = cpu_arch_isa_flags; | |
6055 | } | |
9103f4f4 L |
6056 | break; |
6057 | } | |
6058 | } | |
6059 | if (i >= ARRAY_SIZE (cpu_arch)) | |
6060 | as_fatal (_("Invalid -march= option: `%s'"), arg); | |
6061 | break; | |
6062 | ||
6063 | case OPTION_MTUNE: | |
6064 | if (*arg == '.') | |
6065 | as_fatal (_("Invalid -mtune= option: `%s'"), arg); | |
6066 | for (i = 0; i < ARRAY_SIZE (cpu_arch); i++) | |
6067 | { | |
6068 | if (strcmp (arg, cpu_arch [i].name) == 0) | |
6069 | { | |
ccc9c027 | 6070 | cpu_arch_tune_set = 1; |
9103f4f4 L |
6071 | cpu_arch_tune = cpu_arch [i].type; |
6072 | cpu_arch_tune_flags = cpu_arch[i].flags; | |
6073 | break; | |
6074 | } | |
6075 | } | |
6076 | if (i >= ARRAY_SIZE (cpu_arch)) | |
6077 | as_fatal (_("Invalid -mtune= option: `%s'"), arg); | |
6078 | break; | |
6079 | ||
252b5132 RH |
6080 | default: |
6081 | return 0; | |
6082 | } | |
6083 | return 1; | |
6084 | } | |
6085 | ||
6086 | void | |
6087 | md_show_usage (stream) | |
6088 | FILE *stream; | |
6089 | { | |
4cc782b5 ILT |
6090 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
6091 | fprintf (stream, _("\ | |
a38cf1db AM |
6092 | -Q ignored\n\ |
6093 | -V print assembler version number\n\ | |
b3b91714 AM |
6094 | -k ignored\n")); |
6095 | #endif | |
6096 | fprintf (stream, _("\ | |
12b55ccc | 6097 | -n Do not optimize code alignment\n\ |
b3b91714 AM |
6098 | -q quieten some warnings\n")); |
6099 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
6100 | fprintf (stream, _("\ | |
a38cf1db | 6101 | -s ignored\n")); |
b3b91714 | 6102 | #endif |
751d281c L |
6103 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined(TE_PEP) |
6104 | fprintf (stream, _("\ | |
6105 | --32/--64 generate 32bit/64bit code\n")); | |
6106 | #endif | |
b3b91714 AM |
6107 | #ifdef SVR4_COMMENT_CHARS |
6108 | fprintf (stream, _("\ | |
6109 | --divide do not treat `/' as a comment character\n")); | |
a38cf1db AM |
6110 | #else |
6111 | fprintf (stream, _("\ | |
b3b91714 | 6112 | --divide ignored\n")); |
4cc782b5 | 6113 | #endif |
9103f4f4 L |
6114 | fprintf (stream, _("\ |
6115 | -march=CPU/-mtune=CPU generate code/optimize for CPU, where CPU is one of:\n\ | |
6116 | i386, i486, pentium, pentiumpro, pentium4, nocona,\n\ | |
4eed87de | 6117 | core, core2, k6, athlon, k8, generic32, generic64\n")); |
9103f4f4 | 6118 | |
252b5132 RH |
6119 | } |
6120 | ||
99ad8390 NC |
6121 | #if defined(TE_PEP) |
6122 | const char * | |
6123 | x86_64_target_format (void) | |
6124 | { | |
6125 | if (strcmp (default_arch, "x86_64") == 0) | |
6126 | { | |
6127 | set_code_flag (CODE_64BIT); | |
6128 | return COFF_TARGET_FORMAT; | |
6129 | } | |
6130 | else if (strcmp (default_arch, "i386") == 0) | |
6131 | { | |
6132 | set_code_flag (CODE_32BIT); | |
6133 | return "coff-i386"; | |
6134 | } | |
6135 | ||
6136 | as_fatal (_("Unknown architecture")); | |
6137 | return NULL; | |
6138 | } | |
6139 | #endif | |
6140 | ||
3e73aa7c JH |
6141 | #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ |
6142 | || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) | |
252b5132 RH |
6143 | |
6144 | /* Pick the target format to use. */ | |
6145 | ||
47926f60 | 6146 | const char * |
e3bb37b5 | 6147 | i386_target_format (void) |
252b5132 | 6148 | { |
3e73aa7c | 6149 | if (!strcmp (default_arch, "x86_64")) |
9103f4f4 L |
6150 | { |
6151 | set_code_flag (CODE_64BIT); | |
6152 | if (cpu_arch_isa_flags == 0) | |
d32cad65 | 6153 | cpu_arch_isa_flags = Cpu186|Cpu286|Cpu386|Cpu486 |
9103f4f4 L |
6154 | |Cpu586|Cpu686|CpuP4|CpuMMX|CpuMMX2 |
6155 | |CpuSSE|CpuSSE2; | |
ccc9c027 | 6156 | if (cpu_arch_tune_flags == 0) |
d32cad65 | 6157 | cpu_arch_tune_flags = Cpu186|Cpu286|Cpu386|Cpu486 |
ccc9c027 L |
6158 | |Cpu586|Cpu686|CpuP4|CpuMMX|CpuMMX2 |
6159 | |CpuSSE|CpuSSE2; | |
9103f4f4 | 6160 | } |
3e73aa7c | 6161 | else if (!strcmp (default_arch, "i386")) |
9103f4f4 L |
6162 | { |
6163 | set_code_flag (CODE_32BIT); | |
6164 | if (cpu_arch_isa_flags == 0) | |
d32cad65 | 6165 | cpu_arch_isa_flags = Cpu186|Cpu286|Cpu386; |
ccc9c027 | 6166 | if (cpu_arch_tune_flags == 0) |
d32cad65 | 6167 | cpu_arch_tune_flags = Cpu186|Cpu286|Cpu386; |
9103f4f4 | 6168 | } |
3e73aa7c JH |
6169 | else |
6170 | as_fatal (_("Unknown architecture")); | |
252b5132 RH |
6171 | switch (OUTPUT_FLAVOR) |
6172 | { | |
4c63da97 AM |
6173 | #ifdef OBJ_MAYBE_AOUT |
6174 | case bfd_target_aout_flavour: | |
47926f60 | 6175 | return AOUT_TARGET_FORMAT; |
4c63da97 AM |
6176 | #endif |
6177 | #ifdef OBJ_MAYBE_COFF | |
252b5132 RH |
6178 | case bfd_target_coff_flavour: |
6179 | return "coff-i386"; | |
4c63da97 | 6180 | #endif |
3e73aa7c | 6181 | #if defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF) |
252b5132 | 6182 | case bfd_target_elf_flavour: |
3e73aa7c | 6183 | { |
e5cb08ac | 6184 | if (flag_code == CODE_64BIT) |
4fa24527 JB |
6185 | { |
6186 | object_64bit = 1; | |
6187 | use_rela_relocations = 1; | |
6188 | } | |
9d7cbccd | 6189 | return flag_code == CODE_64BIT ? ELF_TARGET_FORMAT64 : ELF_TARGET_FORMAT; |
3e73aa7c | 6190 | } |
4c63da97 | 6191 | #endif |
252b5132 RH |
6192 | default: |
6193 | abort (); | |
6194 | return NULL; | |
6195 | } | |
6196 | } | |
6197 | ||
47926f60 | 6198 | #endif /* OBJ_MAYBE_ more than one */ |
a847613f AM |
6199 | |
6200 | #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) | |
e3bb37b5 L |
6201 | void |
6202 | i386_elf_emit_arch_note (void) | |
a847613f | 6203 | { |
718ddfc0 | 6204 | if (IS_ELF && cpu_arch_name != NULL) |
a847613f AM |
6205 | { |
6206 | char *p; | |
6207 | asection *seg = now_seg; | |
6208 | subsegT subseg = now_subseg; | |
6209 | Elf_Internal_Note i_note; | |
6210 | Elf_External_Note e_note; | |
6211 | asection *note_secp; | |
6212 | int len; | |
6213 | ||
6214 | /* Create the .note section. */ | |
6215 | note_secp = subseg_new (".note", 0); | |
6216 | bfd_set_section_flags (stdoutput, | |
6217 | note_secp, | |
6218 | SEC_HAS_CONTENTS | SEC_READONLY); | |
6219 | ||
6220 | /* Process the arch string. */ | |
6221 | len = strlen (cpu_arch_name); | |
6222 | ||
6223 | i_note.namesz = len + 1; | |
6224 | i_note.descsz = 0; | |
6225 | i_note.type = NT_ARCH; | |
6226 | p = frag_more (sizeof (e_note.namesz)); | |
6227 | md_number_to_chars (p, (valueT) i_note.namesz, sizeof (e_note.namesz)); | |
6228 | p = frag_more (sizeof (e_note.descsz)); | |
6229 | md_number_to_chars (p, (valueT) i_note.descsz, sizeof (e_note.descsz)); | |
6230 | p = frag_more (sizeof (e_note.type)); | |
6231 | md_number_to_chars (p, (valueT) i_note.type, sizeof (e_note.type)); | |
6232 | p = frag_more (len + 1); | |
6233 | strcpy (p, cpu_arch_name); | |
6234 | ||
6235 | frag_align (2, 0, 0); | |
6236 | ||
6237 | subseg_set (seg, subseg); | |
6238 | } | |
6239 | } | |
6240 | #endif | |
252b5132 | 6241 | \f |
252b5132 RH |
6242 | symbolS * |
6243 | md_undefined_symbol (name) | |
6244 | char *name; | |
6245 | { | |
18dc2407 ILT |
6246 | if (name[0] == GLOBAL_OFFSET_TABLE_NAME[0] |
6247 | && name[1] == GLOBAL_OFFSET_TABLE_NAME[1] | |
6248 | && name[2] == GLOBAL_OFFSET_TABLE_NAME[2] | |
6249 | && strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0) | |
24eab124 AM |
6250 | { |
6251 | if (!GOT_symbol) | |
6252 | { | |
6253 | if (symbol_find (name)) | |
6254 | as_bad (_("GOT already in symbol table")); | |
6255 | GOT_symbol = symbol_new (name, undefined_section, | |
6256 | (valueT) 0, &zero_address_frag); | |
6257 | }; | |
6258 | return GOT_symbol; | |
6259 | } | |
252b5132 RH |
6260 | return 0; |
6261 | } | |
6262 | ||
6263 | /* Round up a section size to the appropriate boundary. */ | |
47926f60 | 6264 | |
252b5132 RH |
6265 | valueT |
6266 | md_section_align (segment, size) | |
ab9da554 | 6267 | segT segment ATTRIBUTE_UNUSED; |
252b5132 RH |
6268 | valueT size; |
6269 | { | |
4c63da97 AM |
6270 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)) |
6271 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
6272 | { | |
6273 | /* For a.out, force the section size to be aligned. If we don't do | |
6274 | this, BFD will align it for us, but it will not write out the | |
6275 | final bytes of the section. This may be a bug in BFD, but it is | |
6276 | easier to fix it here since that is how the other a.out targets | |
6277 | work. */ | |
6278 | int align; | |
6279 | ||
6280 | align = bfd_get_section_alignment (stdoutput, segment); | |
6281 | size = ((size + (1 << align) - 1) & ((valueT) -1 << align)); | |
6282 | } | |
252b5132 RH |
6283 | #endif |
6284 | ||
6285 | return size; | |
6286 | } | |
6287 | ||
6288 | /* On the i386, PC-relative offsets are relative to the start of the | |
6289 | next instruction. That is, the address of the offset, plus its | |
6290 | size, since the offset is always the last part of the insn. */ | |
6291 | ||
6292 | long | |
e3bb37b5 | 6293 | md_pcrel_from (fixS *fixP) |
252b5132 RH |
6294 | { |
6295 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; | |
6296 | } | |
6297 | ||
6298 | #ifndef I386COFF | |
6299 | ||
6300 | static void | |
e3bb37b5 | 6301 | s_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 6302 | { |
29b0f896 | 6303 | int temp; |
252b5132 | 6304 | |
8a75718c JB |
6305 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
6306 | if (IS_ELF) | |
6307 | obj_elf_section_change_hook (); | |
6308 | #endif | |
252b5132 RH |
6309 | temp = get_absolute_expression (); |
6310 | subseg_set (bss_section, (subsegT) temp); | |
6311 | demand_empty_rest_of_line (); | |
6312 | } | |
6313 | ||
6314 | #endif | |
6315 | ||
252b5132 | 6316 | void |
e3bb37b5 | 6317 | i386_validate_fix (fixS *fixp) |
252b5132 RH |
6318 | { |
6319 | if (fixp->fx_subsy && fixp->fx_subsy == GOT_symbol) | |
6320 | { | |
23df1078 JH |
6321 | if (fixp->fx_r_type == BFD_RELOC_32_PCREL) |
6322 | { | |
4fa24527 | 6323 | if (!object_64bit) |
23df1078 JH |
6324 | abort (); |
6325 | fixp->fx_r_type = BFD_RELOC_X86_64_GOTPCREL; | |
6326 | } | |
6327 | else | |
6328 | { | |
4fa24527 | 6329 | if (!object_64bit) |
d6ab8113 JB |
6330 | fixp->fx_r_type = BFD_RELOC_386_GOTOFF; |
6331 | else | |
6332 | fixp->fx_r_type = BFD_RELOC_X86_64_GOTOFF64; | |
23df1078 | 6333 | } |
252b5132 RH |
6334 | fixp->fx_subsy = 0; |
6335 | } | |
6336 | } | |
6337 | ||
252b5132 RH |
6338 | arelent * |
6339 | tc_gen_reloc (section, fixp) | |
ab9da554 | 6340 | asection *section ATTRIBUTE_UNUSED; |
252b5132 RH |
6341 | fixS *fixp; |
6342 | { | |
6343 | arelent *rel; | |
6344 | bfd_reloc_code_real_type code; | |
6345 | ||
6346 | switch (fixp->fx_r_type) | |
6347 | { | |
3e73aa7c JH |
6348 | case BFD_RELOC_X86_64_PLT32: |
6349 | case BFD_RELOC_X86_64_GOT32: | |
6350 | case BFD_RELOC_X86_64_GOTPCREL: | |
252b5132 RH |
6351 | case BFD_RELOC_386_PLT32: |
6352 | case BFD_RELOC_386_GOT32: | |
6353 | case BFD_RELOC_386_GOTOFF: | |
6354 | case BFD_RELOC_386_GOTPC: | |
13ae64f3 JJ |
6355 | case BFD_RELOC_386_TLS_GD: |
6356 | case BFD_RELOC_386_TLS_LDM: | |
6357 | case BFD_RELOC_386_TLS_LDO_32: | |
6358 | case BFD_RELOC_386_TLS_IE_32: | |
37e55690 JJ |
6359 | case BFD_RELOC_386_TLS_IE: |
6360 | case BFD_RELOC_386_TLS_GOTIE: | |
13ae64f3 JJ |
6361 | case BFD_RELOC_386_TLS_LE_32: |
6362 | case BFD_RELOC_386_TLS_LE: | |
67a4f2b7 AO |
6363 | case BFD_RELOC_386_TLS_GOTDESC: |
6364 | case BFD_RELOC_386_TLS_DESC_CALL: | |
bffbf940 JJ |
6365 | case BFD_RELOC_X86_64_TLSGD: |
6366 | case BFD_RELOC_X86_64_TLSLD: | |
6367 | case BFD_RELOC_X86_64_DTPOFF32: | |
d6ab8113 | 6368 | case BFD_RELOC_X86_64_DTPOFF64: |
bffbf940 JJ |
6369 | case BFD_RELOC_X86_64_GOTTPOFF: |
6370 | case BFD_RELOC_X86_64_TPOFF32: | |
d6ab8113 JB |
6371 | case BFD_RELOC_X86_64_TPOFF64: |
6372 | case BFD_RELOC_X86_64_GOTOFF64: | |
6373 | case BFD_RELOC_X86_64_GOTPC32: | |
7b81dfbb AJ |
6374 | case BFD_RELOC_X86_64_GOT64: |
6375 | case BFD_RELOC_X86_64_GOTPCREL64: | |
6376 | case BFD_RELOC_X86_64_GOTPC64: | |
6377 | case BFD_RELOC_X86_64_GOTPLT64: | |
6378 | case BFD_RELOC_X86_64_PLTOFF64: | |
67a4f2b7 AO |
6379 | case BFD_RELOC_X86_64_GOTPC32_TLSDESC: |
6380 | case BFD_RELOC_X86_64_TLSDESC_CALL: | |
252b5132 RH |
6381 | case BFD_RELOC_RVA: |
6382 | case BFD_RELOC_VTABLE_ENTRY: | |
6383 | case BFD_RELOC_VTABLE_INHERIT: | |
6482c264 NC |
6384 | #ifdef TE_PE |
6385 | case BFD_RELOC_32_SECREL: | |
6386 | #endif | |
252b5132 RH |
6387 | code = fixp->fx_r_type; |
6388 | break; | |
dbbaec26 L |
6389 | case BFD_RELOC_X86_64_32S: |
6390 | if (!fixp->fx_pcrel) | |
6391 | { | |
6392 | /* Don't turn BFD_RELOC_X86_64_32S into BFD_RELOC_32. */ | |
6393 | code = fixp->fx_r_type; | |
6394 | break; | |
6395 | } | |
252b5132 | 6396 | default: |
93382f6d | 6397 | if (fixp->fx_pcrel) |
252b5132 | 6398 | { |
93382f6d AM |
6399 | switch (fixp->fx_size) |
6400 | { | |
6401 | default: | |
b091f402 AM |
6402 | as_bad_where (fixp->fx_file, fixp->fx_line, |
6403 | _("can not do %d byte pc-relative relocation"), | |
6404 | fixp->fx_size); | |
93382f6d AM |
6405 | code = BFD_RELOC_32_PCREL; |
6406 | break; | |
6407 | case 1: code = BFD_RELOC_8_PCREL; break; | |
6408 | case 2: code = BFD_RELOC_16_PCREL; break; | |
6409 | case 4: code = BFD_RELOC_32_PCREL; break; | |
d6ab8113 JB |
6410 | #ifdef BFD64 |
6411 | case 8: code = BFD_RELOC_64_PCREL; break; | |
6412 | #endif | |
93382f6d AM |
6413 | } |
6414 | } | |
6415 | else | |
6416 | { | |
6417 | switch (fixp->fx_size) | |
6418 | { | |
6419 | default: | |
b091f402 AM |
6420 | as_bad_where (fixp->fx_file, fixp->fx_line, |
6421 | _("can not do %d byte relocation"), | |
6422 | fixp->fx_size); | |
93382f6d AM |
6423 | code = BFD_RELOC_32; |
6424 | break; | |
6425 | case 1: code = BFD_RELOC_8; break; | |
6426 | case 2: code = BFD_RELOC_16; break; | |
6427 | case 4: code = BFD_RELOC_32; break; | |
937149dd | 6428 | #ifdef BFD64 |
3e73aa7c | 6429 | case 8: code = BFD_RELOC_64; break; |
937149dd | 6430 | #endif |
93382f6d | 6431 | } |
252b5132 RH |
6432 | } |
6433 | break; | |
6434 | } | |
252b5132 | 6435 | |
d182319b JB |
6436 | if ((code == BFD_RELOC_32 |
6437 | || code == BFD_RELOC_32_PCREL | |
6438 | || code == BFD_RELOC_X86_64_32S) | |
252b5132 RH |
6439 | && GOT_symbol |
6440 | && fixp->fx_addsy == GOT_symbol) | |
3e73aa7c | 6441 | { |
4fa24527 | 6442 | if (!object_64bit) |
d6ab8113 JB |
6443 | code = BFD_RELOC_386_GOTPC; |
6444 | else | |
6445 | code = BFD_RELOC_X86_64_GOTPC32; | |
3e73aa7c | 6446 | } |
7b81dfbb AJ |
6447 | if ((code == BFD_RELOC_64 || code == BFD_RELOC_64_PCREL) |
6448 | && GOT_symbol | |
6449 | && fixp->fx_addsy == GOT_symbol) | |
6450 | { | |
6451 | code = BFD_RELOC_X86_64_GOTPC64; | |
6452 | } | |
252b5132 RH |
6453 | |
6454 | rel = (arelent *) xmalloc (sizeof (arelent)); | |
49309057 ILT |
6455 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
6456 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
6457 | |
6458 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
c87db184 | 6459 | |
3e73aa7c JH |
6460 | if (!use_rela_relocations) |
6461 | { | |
6462 | /* HACK: Since i386 ELF uses Rel instead of Rela, encode the | |
6463 | vtable entry to be used in the relocation's section offset. */ | |
6464 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
6465 | rel->address = fixp->fx_offset; | |
252b5132 | 6466 | |
c6682705 | 6467 | rel->addend = 0; |
3e73aa7c JH |
6468 | } |
6469 | /* Use the rela in 64bit mode. */ | |
252b5132 | 6470 | else |
3e73aa7c | 6471 | { |
062cd5e7 AS |
6472 | if (!fixp->fx_pcrel) |
6473 | rel->addend = fixp->fx_offset; | |
6474 | else | |
6475 | switch (code) | |
6476 | { | |
6477 | case BFD_RELOC_X86_64_PLT32: | |
6478 | case BFD_RELOC_X86_64_GOT32: | |
6479 | case BFD_RELOC_X86_64_GOTPCREL: | |
bffbf940 JJ |
6480 | case BFD_RELOC_X86_64_TLSGD: |
6481 | case BFD_RELOC_X86_64_TLSLD: | |
6482 | case BFD_RELOC_X86_64_GOTTPOFF: | |
67a4f2b7 AO |
6483 | case BFD_RELOC_X86_64_GOTPC32_TLSDESC: |
6484 | case BFD_RELOC_X86_64_TLSDESC_CALL: | |
062cd5e7 AS |
6485 | rel->addend = fixp->fx_offset - fixp->fx_size; |
6486 | break; | |
6487 | default: | |
6488 | rel->addend = (section->vma | |
6489 | - fixp->fx_size | |
6490 | + fixp->fx_addnumber | |
6491 | + md_pcrel_from (fixp)); | |
6492 | break; | |
6493 | } | |
3e73aa7c JH |
6494 | } |
6495 | ||
252b5132 RH |
6496 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); |
6497 | if (rel->howto == NULL) | |
6498 | { | |
6499 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
d0b47220 | 6500 | _("cannot represent relocation type %s"), |
252b5132 RH |
6501 | bfd_get_reloc_code_name (code)); |
6502 | /* Set howto to a garbage value so that we can keep going. */ | |
6503 | rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); | |
6504 | assert (rel->howto != NULL); | |
6505 | } | |
6506 | ||
6507 | return rel; | |
6508 | } | |
6509 | ||
64a0c779 DN |
6510 | \f |
6511 | /* Parse operands using Intel syntax. This implements a recursive descent | |
6512 | parser based on the BNF grammar published in Appendix B of the MASM 6.1 | |
6513 | Programmer's Guide. | |
6514 | ||
6515 | FIXME: We do not recognize the full operand grammar defined in the MASM | |
6516 | documentation. In particular, all the structure/union and | |
6517 | high-level macro operands are missing. | |
6518 | ||
6519 | Uppercase words are terminals, lower case words are non-terminals. | |
6520 | Objects surrounded by double brackets '[[' ']]' are optional. Vertical | |
6521 | bars '|' denote choices. Most grammar productions are implemented in | |
6522 | functions called 'intel_<production>'. | |
6523 | ||
6524 | Initial production is 'expr'. | |
6525 | ||
9306ca4a | 6526 | addOp + | - |
64a0c779 DN |
6527 | |
6528 | alpha [a-zA-Z] | |
6529 | ||
9306ca4a JB |
6530 | binOp & | AND | \| | OR | ^ | XOR |
6531 | ||
64a0c779 DN |
6532 | byteRegister AL | AH | BL | BH | CL | CH | DL | DH |
6533 | ||
6534 | constant digits [[ radixOverride ]] | |
6535 | ||
9306ca4a | 6536 | dataType BYTE | WORD | DWORD | FWORD | QWORD | TBYTE | OWORD | XMMWORD |
64a0c779 DN |
6537 | |
6538 | digits decdigit | |
b77a7acd AJ |
6539 | | digits decdigit |
6540 | | digits hexdigit | |
64a0c779 DN |
6541 | |
6542 | decdigit [0-9] | |
6543 | ||
9306ca4a JB |
6544 | e04 e04 addOp e05 |
6545 | | e05 | |
6546 | ||
6547 | e05 e05 binOp e06 | |
b77a7acd | 6548 | | e06 |
64a0c779 DN |
6549 | |
6550 | e06 e06 mulOp e09 | |
b77a7acd | 6551 | | e09 |
64a0c779 DN |
6552 | |
6553 | e09 OFFSET e10 | |
a724f0f4 JB |
6554 | | SHORT e10 |
6555 | | + e10 | |
6556 | | - e10 | |
9306ca4a JB |
6557 | | ~ e10 |
6558 | | NOT e10 | |
64a0c779 DN |
6559 | | e09 PTR e10 |
6560 | | e09 : e10 | |
6561 | | e10 | |
6562 | ||
6563 | e10 e10 [ expr ] | |
b77a7acd | 6564 | | e11 |
64a0c779 DN |
6565 | |
6566 | e11 ( expr ) | |
b77a7acd | 6567 | | [ expr ] |
64a0c779 DN |
6568 | | constant |
6569 | | dataType | |
6570 | | id | |
6571 | | $ | |
6572 | | register | |
6573 | ||
a724f0f4 | 6574 | => expr expr cmpOp e04 |
9306ca4a | 6575 | | e04 |
64a0c779 DN |
6576 | |
6577 | gpRegister AX | EAX | BX | EBX | CX | ECX | DX | EDX | |
b77a7acd | 6578 | | BP | EBP | SP | ESP | DI | EDI | SI | ESI |
64a0c779 DN |
6579 | |
6580 | hexdigit a | b | c | d | e | f | |
b77a7acd | 6581 | | A | B | C | D | E | F |
64a0c779 DN |
6582 | |
6583 | id alpha | |
b77a7acd | 6584 | | id alpha |
64a0c779 DN |
6585 | | id decdigit |
6586 | ||
9306ca4a | 6587 | mulOp * | / | % | MOD | << | SHL | >> | SHR |
64a0c779 DN |
6588 | |
6589 | quote " | ' | |
6590 | ||
6591 | register specialRegister | |
b77a7acd | 6592 | | gpRegister |
64a0c779 DN |
6593 | | byteRegister |
6594 | ||
6595 | segmentRegister CS | DS | ES | FS | GS | SS | |
6596 | ||
9306ca4a | 6597 | specialRegister CR0 | CR2 | CR3 | CR4 |
b77a7acd | 6598 | | DR0 | DR1 | DR2 | DR3 | DR6 | DR7 |
64a0c779 DN |
6599 | | TR3 | TR4 | TR5 | TR6 | TR7 |
6600 | ||
64a0c779 DN |
6601 | We simplify the grammar in obvious places (e.g., register parsing is |
6602 | done by calling parse_register) and eliminate immediate left recursion | |
6603 | to implement a recursive-descent parser. | |
6604 | ||
a724f0f4 JB |
6605 | expr e04 expr' |
6606 | ||
6607 | expr' cmpOp e04 expr' | |
6608 | | Empty | |
9306ca4a JB |
6609 | |
6610 | e04 e05 e04' | |
6611 | ||
6612 | e04' addOp e05 e04' | |
6613 | | Empty | |
64a0c779 DN |
6614 | |
6615 | e05 e06 e05' | |
6616 | ||
9306ca4a | 6617 | e05' binOp e06 e05' |
b77a7acd | 6618 | | Empty |
64a0c779 DN |
6619 | |
6620 | e06 e09 e06' | |
6621 | ||
6622 | e06' mulOp e09 e06' | |
b77a7acd | 6623 | | Empty |
64a0c779 DN |
6624 | |
6625 | e09 OFFSET e10 e09' | |
a724f0f4 JB |
6626 | | SHORT e10' |
6627 | | + e10' | |
6628 | | - e10' | |
6629 | | ~ e10' | |
6630 | | NOT e10' | |
b77a7acd | 6631 | | e10 e09' |
64a0c779 DN |
6632 | |
6633 | e09' PTR e10 e09' | |
b77a7acd | 6634 | | : e10 e09' |
64a0c779 DN |
6635 | | Empty |
6636 | ||
6637 | e10 e11 e10' | |
6638 | ||
6639 | e10' [ expr ] e10' | |
b77a7acd | 6640 | | Empty |
64a0c779 DN |
6641 | |
6642 | e11 ( expr ) | |
b77a7acd | 6643 | | [ expr ] |
64a0c779 DN |
6644 | | BYTE |
6645 | | WORD | |
6646 | | DWORD | |
9306ca4a | 6647 | | FWORD |
64a0c779 | 6648 | | QWORD |
9306ca4a JB |
6649 | | TBYTE |
6650 | | OWORD | |
6651 | | XMMWORD | |
64a0c779 DN |
6652 | | . |
6653 | | $ | |
6654 | | register | |
6655 | | id | |
6656 | | constant */ | |
6657 | ||
6658 | /* Parsing structure for the intel syntax parser. Used to implement the | |
6659 | semantic actions for the operand grammar. */ | |
6660 | struct intel_parser_s | |
6661 | { | |
6662 | char *op_string; /* The string being parsed. */ | |
6663 | int got_a_float; /* Whether the operand is a float. */ | |
4a1805b1 | 6664 | int op_modifier; /* Operand modifier. */ |
64a0c779 | 6665 | int is_mem; /* 1 if operand is memory reference. */ |
4eed87de AM |
6666 | int in_offset; /* >=1 if parsing operand of offset. */ |
6667 | int in_bracket; /* >=1 if parsing operand in brackets. */ | |
64a0c779 DN |
6668 | const reg_entry *reg; /* Last register reference found. */ |
6669 | char *disp; /* Displacement string being built. */ | |
a724f0f4 | 6670 | char *next_operand; /* Resume point when splitting operands. */ |
64a0c779 DN |
6671 | }; |
6672 | ||
6673 | static struct intel_parser_s intel_parser; | |
6674 | ||
6675 | /* Token structure for parsing intel syntax. */ | |
6676 | struct intel_token | |
6677 | { | |
6678 | int code; /* Token code. */ | |
6679 | const reg_entry *reg; /* Register entry for register tokens. */ | |
6680 | char *str; /* String representation. */ | |
6681 | }; | |
6682 | ||
6683 | static struct intel_token cur_token, prev_token; | |
6684 | ||
50705ef4 AM |
6685 | /* Token codes for the intel parser. Since T_SHORT is already used |
6686 | by COFF, undefine it first to prevent a warning. */ | |
64a0c779 DN |
6687 | #define T_NIL -1 |
6688 | #define T_CONST 1 | |
6689 | #define T_REG 2 | |
6690 | #define T_BYTE 3 | |
6691 | #define T_WORD 4 | |
9306ca4a JB |
6692 | #define T_DWORD 5 |
6693 | #define T_FWORD 6 | |
6694 | #define T_QWORD 7 | |
6695 | #define T_TBYTE 8 | |
6696 | #define T_XMMWORD 9 | |
50705ef4 | 6697 | #undef T_SHORT |
9306ca4a JB |
6698 | #define T_SHORT 10 |
6699 | #define T_OFFSET 11 | |
6700 | #define T_PTR 12 | |
6701 | #define T_ID 13 | |
6702 | #define T_SHL 14 | |
6703 | #define T_SHR 15 | |
64a0c779 DN |
6704 | |
6705 | /* Prototypes for intel parser functions. */ | |
e3bb37b5 L |
6706 | static int intel_match_token (int); |
6707 | static void intel_putback_token (void); | |
6708 | static void intel_get_token (void); | |
6709 | static int intel_expr (void); | |
6710 | static int intel_e04 (void); | |
6711 | static int intel_e05 (void); | |
6712 | static int intel_e06 (void); | |
6713 | static int intel_e09 (void); | |
6714 | static int intel_e10 (void); | |
6715 | static int intel_e11 (void); | |
64a0c779 | 6716 | |
64a0c779 | 6717 | static int |
e3bb37b5 | 6718 | i386_intel_operand (char *operand_string, int got_a_float) |
64a0c779 DN |
6719 | { |
6720 | int ret; | |
6721 | char *p; | |
6722 | ||
a724f0f4 JB |
6723 | p = intel_parser.op_string = xstrdup (operand_string); |
6724 | intel_parser.disp = (char *) xmalloc (strlen (operand_string) + 1); | |
6725 | ||
6726 | for (;;) | |
64a0c779 | 6727 | { |
a724f0f4 JB |
6728 | /* Initialize token holders. */ |
6729 | cur_token.code = prev_token.code = T_NIL; | |
6730 | cur_token.reg = prev_token.reg = NULL; | |
6731 | cur_token.str = prev_token.str = NULL; | |
6732 | ||
6733 | /* Initialize parser structure. */ | |
6734 | intel_parser.got_a_float = got_a_float; | |
6735 | intel_parser.op_modifier = 0; | |
6736 | intel_parser.is_mem = 0; | |
6737 | intel_parser.in_offset = 0; | |
6738 | intel_parser.in_bracket = 0; | |
6739 | intel_parser.reg = NULL; | |
6740 | intel_parser.disp[0] = '\0'; | |
6741 | intel_parser.next_operand = NULL; | |
6742 | ||
6743 | /* Read the first token and start the parser. */ | |
6744 | intel_get_token (); | |
6745 | ret = intel_expr (); | |
6746 | ||
6747 | if (!ret) | |
6748 | break; | |
6749 | ||
9306ca4a JB |
6750 | if (cur_token.code != T_NIL) |
6751 | { | |
6752 | as_bad (_("invalid operand for '%s' ('%s' unexpected)"), | |
6753 | current_templates->start->name, cur_token.str); | |
6754 | ret = 0; | |
6755 | } | |
64a0c779 DN |
6756 | /* If we found a memory reference, hand it over to i386_displacement |
6757 | to fill in the rest of the operand fields. */ | |
9306ca4a | 6758 | else if (intel_parser.is_mem) |
64a0c779 DN |
6759 | { |
6760 | if ((i.mem_operands == 1 | |
6761 | && (current_templates->start->opcode_modifier & IsString) == 0) | |
6762 | || i.mem_operands == 2) | |
6763 | { | |
6764 | as_bad (_("too many memory references for '%s'"), | |
6765 | current_templates->start->name); | |
6766 | ret = 0; | |
6767 | } | |
6768 | else | |
6769 | { | |
6770 | char *s = intel_parser.disp; | |
6771 | i.mem_operands++; | |
6772 | ||
a724f0f4 JB |
6773 | if (!quiet_warnings && intel_parser.is_mem < 0) |
6774 | /* See the comments in intel_bracket_expr. */ | |
6775 | as_warn (_("Treating `%s' as memory reference"), operand_string); | |
6776 | ||
64a0c779 DN |
6777 | /* Add the displacement expression. */ |
6778 | if (*s != '\0') | |
a4622f40 AM |
6779 | ret = i386_displacement (s, s + strlen (s)); |
6780 | if (ret) | |
a724f0f4 JB |
6781 | { |
6782 | /* Swap base and index in 16-bit memory operands like | |
6783 | [si+bx]. Since i386_index_check is also used in AT&T | |
6784 | mode we have to do that here. */ | |
6785 | if (i.base_reg | |
6786 | && i.index_reg | |
6787 | && (i.base_reg->reg_type & Reg16) | |
6788 | && (i.index_reg->reg_type & Reg16) | |
6789 | && i.base_reg->reg_num >= 6 | |
6790 | && i.index_reg->reg_num < 6) | |
6791 | { | |
6792 | const reg_entry *base = i.index_reg; | |
6793 | ||
6794 | i.index_reg = i.base_reg; | |
6795 | i.base_reg = base; | |
6796 | } | |
6797 | ret = i386_index_check (operand_string); | |
6798 | } | |
64a0c779 DN |
6799 | } |
6800 | } | |
6801 | ||
6802 | /* Constant and OFFSET expressions are handled by i386_immediate. */ | |
a724f0f4 | 6803 | else if ((intel_parser.op_modifier & (1 << T_OFFSET)) |
64a0c779 DN |
6804 | || intel_parser.reg == NULL) |
6805 | ret = i386_immediate (intel_parser.disp); | |
a724f0f4 JB |
6806 | |
6807 | if (intel_parser.next_operand && this_operand >= MAX_OPERANDS - 1) | |
4eed87de | 6808 | ret = 0; |
a724f0f4 JB |
6809 | if (!ret || !intel_parser.next_operand) |
6810 | break; | |
6811 | intel_parser.op_string = intel_parser.next_operand; | |
6812 | this_operand = i.operands++; | |
64a0c779 DN |
6813 | } |
6814 | ||
6815 | free (p); | |
6816 | free (intel_parser.disp); | |
6817 | ||
6818 | return ret; | |
6819 | } | |
6820 | ||
a724f0f4 JB |
6821 | #define NUM_ADDRESS_REGS (!!i.base_reg + !!i.index_reg) |
6822 | ||
6823 | /* expr e04 expr' | |
6824 | ||
6825 | expr' cmpOp e04 expr' | |
6826 | | Empty */ | |
64a0c779 | 6827 | static int |
e3bb37b5 | 6828 | intel_expr (void) |
64a0c779 | 6829 | { |
a724f0f4 JB |
6830 | /* XXX Implement the comparison operators. */ |
6831 | return intel_e04 (); | |
9306ca4a JB |
6832 | } |
6833 | ||
a724f0f4 | 6834 | /* e04 e05 e04' |
9306ca4a | 6835 | |
a724f0f4 | 6836 | e04' addOp e05 e04' |
9306ca4a JB |
6837 | | Empty */ |
6838 | static int | |
e3bb37b5 | 6839 | intel_e04 (void) |
9306ca4a | 6840 | { |
a724f0f4 | 6841 | int nregs = -1; |
9306ca4a | 6842 | |
a724f0f4 | 6843 | for (;;) |
9306ca4a | 6844 | { |
a724f0f4 JB |
6845 | if (!intel_e05()) |
6846 | return 0; | |
9306ca4a | 6847 | |
a724f0f4 JB |
6848 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
6849 | i.base_reg = i386_regtab + REGNAM_AL; /* al is invalid as base */ | |
9306ca4a | 6850 | |
a724f0f4 JB |
6851 | if (cur_token.code == '+') |
6852 | nregs = -1; | |
6853 | else if (cur_token.code == '-') | |
6854 | nregs = NUM_ADDRESS_REGS; | |
6855 | else | |
6856 | return 1; | |
64a0c779 | 6857 | |
a724f0f4 JB |
6858 | strcat (intel_parser.disp, cur_token.str); |
6859 | intel_match_token (cur_token.code); | |
6860 | } | |
64a0c779 DN |
6861 | } |
6862 | ||
64a0c779 DN |
6863 | /* e05 e06 e05' |
6864 | ||
9306ca4a | 6865 | e05' binOp e06 e05' |
64a0c779 DN |
6866 | | Empty */ |
6867 | static int | |
e3bb37b5 | 6868 | intel_e05 (void) |
64a0c779 | 6869 | { |
a724f0f4 | 6870 | int nregs = ~NUM_ADDRESS_REGS; |
64a0c779 | 6871 | |
a724f0f4 | 6872 | for (;;) |
64a0c779 | 6873 | { |
a724f0f4 JB |
6874 | if (!intel_e06()) |
6875 | return 0; | |
6876 | ||
4eed87de AM |
6877 | if (cur_token.code == '&' |
6878 | || cur_token.code == '|' | |
6879 | || cur_token.code == '^') | |
a724f0f4 JB |
6880 | { |
6881 | char str[2]; | |
6882 | ||
6883 | str[0] = cur_token.code; | |
6884 | str[1] = 0; | |
6885 | strcat (intel_parser.disp, str); | |
6886 | } | |
6887 | else | |
6888 | break; | |
9306ca4a | 6889 | |
64a0c779 DN |
6890 | intel_match_token (cur_token.code); |
6891 | ||
a724f0f4 JB |
6892 | if (nregs < 0) |
6893 | nregs = ~nregs; | |
64a0c779 | 6894 | } |
a724f0f4 JB |
6895 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
6896 | i.base_reg = i386_regtab + REGNAM_AL + 1; /* cl is invalid as base */ | |
6897 | return 1; | |
4a1805b1 | 6898 | } |
64a0c779 DN |
6899 | |
6900 | /* e06 e09 e06' | |
6901 | ||
6902 | e06' mulOp e09 e06' | |
b77a7acd | 6903 | | Empty */ |
64a0c779 | 6904 | static int |
e3bb37b5 | 6905 | intel_e06 (void) |
64a0c779 | 6906 | { |
a724f0f4 | 6907 | int nregs = ~NUM_ADDRESS_REGS; |
64a0c779 | 6908 | |
a724f0f4 | 6909 | for (;;) |
64a0c779 | 6910 | { |
a724f0f4 JB |
6911 | if (!intel_e09()) |
6912 | return 0; | |
9306ca4a | 6913 | |
4eed87de AM |
6914 | if (cur_token.code == '*' |
6915 | || cur_token.code == '/' | |
6916 | || cur_token.code == '%') | |
a724f0f4 JB |
6917 | { |
6918 | char str[2]; | |
9306ca4a | 6919 | |
a724f0f4 JB |
6920 | str[0] = cur_token.code; |
6921 | str[1] = 0; | |
6922 | strcat (intel_parser.disp, str); | |
6923 | } | |
6924 | else if (cur_token.code == T_SHL) | |
6925 | strcat (intel_parser.disp, "<<"); | |
6926 | else if (cur_token.code == T_SHR) | |
6927 | strcat (intel_parser.disp, ">>"); | |
6928 | else | |
6929 | break; | |
9306ca4a | 6930 | |
64e74474 | 6931 | intel_match_token (cur_token.code); |
64a0c779 | 6932 | |
a724f0f4 JB |
6933 | if (nregs < 0) |
6934 | nregs = ~nregs; | |
64a0c779 | 6935 | } |
a724f0f4 JB |
6936 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
6937 | i.base_reg = i386_regtab + REGNAM_AL + 2; /* dl is invalid as base */ | |
6938 | return 1; | |
64a0c779 DN |
6939 | } |
6940 | ||
a724f0f4 JB |
6941 | /* e09 OFFSET e09 |
6942 | | SHORT e09 | |
6943 | | + e09 | |
6944 | | - e09 | |
6945 | | ~ e09 | |
6946 | | NOT e09 | |
9306ca4a JB |
6947 | | e10 e09' |
6948 | ||
64a0c779 | 6949 | e09' PTR e10 e09' |
b77a7acd | 6950 | | : e10 e09' |
64a0c779 DN |
6951 | | Empty */ |
6952 | static int | |
e3bb37b5 | 6953 | intel_e09 (void) |
64a0c779 | 6954 | { |
a724f0f4 JB |
6955 | int nregs = ~NUM_ADDRESS_REGS; |
6956 | int in_offset = 0; | |
6957 | ||
6958 | for (;;) | |
64a0c779 | 6959 | { |
a724f0f4 JB |
6960 | /* Don't consume constants here. */ |
6961 | if (cur_token.code == '+' || cur_token.code == '-') | |
6962 | { | |
6963 | /* Need to look one token ahead - if the next token | |
6964 | is a constant, the current token is its sign. */ | |
6965 | int next_code; | |
6966 | ||
6967 | intel_match_token (cur_token.code); | |
6968 | next_code = cur_token.code; | |
6969 | intel_putback_token (); | |
6970 | if (next_code == T_CONST) | |
6971 | break; | |
6972 | } | |
6973 | ||
6974 | /* e09 OFFSET e09 */ | |
6975 | if (cur_token.code == T_OFFSET) | |
6976 | { | |
6977 | if (!in_offset++) | |
6978 | ++intel_parser.in_offset; | |
6979 | } | |
6980 | ||
6981 | /* e09 SHORT e09 */ | |
6982 | else if (cur_token.code == T_SHORT) | |
6983 | intel_parser.op_modifier |= 1 << T_SHORT; | |
6984 | ||
6985 | /* e09 + e09 */ | |
6986 | else if (cur_token.code == '+') | |
6987 | strcat (intel_parser.disp, "+"); | |
6988 | ||
6989 | /* e09 - e09 | |
6990 | | ~ e09 | |
6991 | | NOT e09 */ | |
6992 | else if (cur_token.code == '-' || cur_token.code == '~') | |
6993 | { | |
6994 | char str[2]; | |
64a0c779 | 6995 | |
a724f0f4 JB |
6996 | if (nregs < 0) |
6997 | nregs = ~nregs; | |
6998 | str[0] = cur_token.code; | |
6999 | str[1] = 0; | |
7000 | strcat (intel_parser.disp, str); | |
7001 | } | |
7002 | ||
7003 | /* e09 e10 e09' */ | |
7004 | else | |
7005 | break; | |
7006 | ||
7007 | intel_match_token (cur_token.code); | |
64a0c779 DN |
7008 | } |
7009 | ||
a724f0f4 | 7010 | for (;;) |
9306ca4a | 7011 | { |
a724f0f4 JB |
7012 | if (!intel_e10 ()) |
7013 | return 0; | |
9306ca4a | 7014 | |
a724f0f4 JB |
7015 | /* e09' PTR e10 e09' */ |
7016 | if (cur_token.code == T_PTR) | |
7017 | { | |
7018 | char suffix; | |
9306ca4a | 7019 | |
a724f0f4 JB |
7020 | if (prev_token.code == T_BYTE) |
7021 | suffix = BYTE_MNEM_SUFFIX; | |
9306ca4a | 7022 | |
a724f0f4 JB |
7023 | else if (prev_token.code == T_WORD) |
7024 | { | |
7025 | if (current_templates->start->name[0] == 'l' | |
7026 | && current_templates->start->name[2] == 's' | |
7027 | && current_templates->start->name[3] == 0) | |
7028 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
7029 | else if (intel_parser.got_a_float == 2) /* "fi..." */ | |
7030 | suffix = SHORT_MNEM_SUFFIX; | |
7031 | else | |
7032 | suffix = WORD_MNEM_SUFFIX; | |
7033 | } | |
64a0c779 | 7034 | |
a724f0f4 JB |
7035 | else if (prev_token.code == T_DWORD) |
7036 | { | |
7037 | if (current_templates->start->name[0] == 'l' | |
7038 | && current_templates->start->name[2] == 's' | |
7039 | && current_templates->start->name[3] == 0) | |
7040 | suffix = WORD_MNEM_SUFFIX; | |
7041 | else if (flag_code == CODE_16BIT | |
7042 | && (current_templates->start->opcode_modifier | |
435acd52 | 7043 | & (Jump | JumpDword))) |
a724f0f4 JB |
7044 | suffix = LONG_DOUBLE_MNEM_SUFFIX; |
7045 | else if (intel_parser.got_a_float == 1) /* "f..." */ | |
7046 | suffix = SHORT_MNEM_SUFFIX; | |
7047 | else | |
7048 | suffix = LONG_MNEM_SUFFIX; | |
7049 | } | |
9306ca4a | 7050 | |
a724f0f4 JB |
7051 | else if (prev_token.code == T_FWORD) |
7052 | { | |
7053 | if (current_templates->start->name[0] == 'l' | |
7054 | && current_templates->start->name[2] == 's' | |
7055 | && current_templates->start->name[3] == 0) | |
7056 | suffix = LONG_MNEM_SUFFIX; | |
7057 | else if (!intel_parser.got_a_float) | |
7058 | { | |
7059 | if (flag_code == CODE_16BIT) | |
7060 | add_prefix (DATA_PREFIX_OPCODE); | |
7061 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
7062 | } | |
7063 | else | |
7064 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
7065 | } | |
64a0c779 | 7066 | |
a724f0f4 JB |
7067 | else if (prev_token.code == T_QWORD) |
7068 | { | |
7069 | if (intel_parser.got_a_float == 1) /* "f..." */ | |
7070 | suffix = LONG_MNEM_SUFFIX; | |
7071 | else | |
7072 | suffix = QWORD_MNEM_SUFFIX; | |
7073 | } | |
64a0c779 | 7074 | |
a724f0f4 JB |
7075 | else if (prev_token.code == T_TBYTE) |
7076 | { | |
7077 | if (intel_parser.got_a_float == 1) | |
7078 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
7079 | else | |
7080 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
7081 | } | |
9306ca4a | 7082 | |
a724f0f4 | 7083 | else if (prev_token.code == T_XMMWORD) |
9306ca4a | 7084 | { |
a724f0f4 JB |
7085 | /* XXX ignored for now, but accepted since gcc uses it */ |
7086 | suffix = 0; | |
9306ca4a | 7087 | } |
64a0c779 | 7088 | |
f16b83df | 7089 | else |
a724f0f4 JB |
7090 | { |
7091 | as_bad (_("Unknown operand modifier `%s'"), prev_token.str); | |
7092 | return 0; | |
7093 | } | |
7094 | ||
435acd52 JB |
7095 | /* Operands for jump/call using 'ptr' notation denote absolute |
7096 | addresses. */ | |
7097 | if (current_templates->start->opcode_modifier & (Jump | JumpDword)) | |
7098 | i.types[this_operand] |= JumpAbsolute; | |
7099 | ||
a724f0f4 JB |
7100 | if (current_templates->start->base_opcode == 0x8d /* lea */) |
7101 | ; | |
7102 | else if (!i.suffix) | |
7103 | i.suffix = suffix; | |
7104 | else if (i.suffix != suffix) | |
7105 | { | |
7106 | as_bad (_("Conflicting operand modifiers")); | |
7107 | return 0; | |
7108 | } | |
64a0c779 | 7109 | |
9306ca4a JB |
7110 | } |
7111 | ||
a724f0f4 JB |
7112 | /* e09' : e10 e09' */ |
7113 | else if (cur_token.code == ':') | |
9306ca4a | 7114 | { |
a724f0f4 JB |
7115 | if (prev_token.code != T_REG) |
7116 | { | |
7117 | /* While {call,jmp} SSSS:OOOO is MASM syntax only when SSSS is a | |
7118 | segment/group identifier (which we don't have), using comma | |
7119 | as the operand separator there is even less consistent, since | |
7120 | there all branches only have a single operand. */ | |
7121 | if (this_operand != 0 | |
7122 | || intel_parser.in_offset | |
7123 | || intel_parser.in_bracket | |
7124 | || (!(current_templates->start->opcode_modifier | |
7125 | & (Jump|JumpDword|JumpInterSegment)) | |
7126 | && !(current_templates->start->operand_types[0] | |
7127 | & JumpAbsolute))) | |
7128 | return intel_match_token (T_NIL); | |
7129 | /* Remember the start of the 2nd operand and terminate 1st | |
7130 | operand here. | |
7131 | XXX This isn't right, yet (when SSSS:OOOO is right operand of | |
7132 | another expression), but it gets at least the simplest case | |
7133 | (a plain number or symbol on the left side) right. */ | |
7134 | intel_parser.next_operand = intel_parser.op_string; | |
7135 | *--intel_parser.op_string = '\0'; | |
7136 | return intel_match_token (':'); | |
7137 | } | |
9306ca4a | 7138 | } |
64a0c779 | 7139 | |
a724f0f4 | 7140 | /* e09' Empty */ |
64a0c779 | 7141 | else |
a724f0f4 | 7142 | break; |
64a0c779 | 7143 | |
a724f0f4 JB |
7144 | intel_match_token (cur_token.code); |
7145 | ||
7146 | } | |
7147 | ||
7148 | if (in_offset) | |
7149 | { | |
7150 | --intel_parser.in_offset; | |
7151 | if (nregs < 0) | |
7152 | nregs = ~nregs; | |
7153 | if (NUM_ADDRESS_REGS > nregs) | |
9306ca4a | 7154 | { |
a724f0f4 | 7155 | as_bad (_("Invalid operand to `OFFSET'")); |
9306ca4a JB |
7156 | return 0; |
7157 | } | |
a724f0f4 JB |
7158 | intel_parser.op_modifier |= 1 << T_OFFSET; |
7159 | } | |
9306ca4a | 7160 | |
a724f0f4 JB |
7161 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
7162 | i.base_reg = i386_regtab + REGNAM_AL + 3; /* bl is invalid as base */ | |
7163 | return 1; | |
7164 | } | |
64a0c779 | 7165 | |
a724f0f4 | 7166 | static int |
e3bb37b5 | 7167 | intel_bracket_expr (void) |
a724f0f4 JB |
7168 | { |
7169 | int was_offset = intel_parser.op_modifier & (1 << T_OFFSET); | |
7170 | const char *start = intel_parser.op_string; | |
7171 | int len; | |
7172 | ||
7173 | if (i.op[this_operand].regs) | |
7174 | return intel_match_token (T_NIL); | |
7175 | ||
7176 | intel_match_token ('['); | |
7177 | ||
7178 | /* Mark as a memory operand only if it's not already known to be an | |
7179 | offset expression. If it's an offset expression, we need to keep | |
7180 | the brace in. */ | |
7181 | if (!intel_parser.in_offset) | |
7182 | { | |
7183 | ++intel_parser.in_bracket; | |
435acd52 JB |
7184 | |
7185 | /* Operands for jump/call inside brackets denote absolute addresses. */ | |
7186 | if (current_templates->start->opcode_modifier & (Jump | JumpDword)) | |
7187 | i.types[this_operand] |= JumpAbsolute; | |
7188 | ||
a724f0f4 JB |
7189 | /* Unfortunately gas always diverged from MASM in a respect that can't |
7190 | be easily fixed without risking to break code sequences likely to be | |
7191 | encountered (the testsuite even check for this): MASM doesn't consider | |
7192 | an expression inside brackets unconditionally as a memory reference. | |
7193 | When that is e.g. a constant, an offset expression, or the sum of the | |
7194 | two, this is still taken as a constant load. gas, however, always | |
7195 | treated these as memory references. As a compromise, we'll try to make | |
7196 | offset expressions inside brackets work the MASM way (since that's | |
7197 | less likely to be found in real world code), but make constants alone | |
7198 | continue to work the traditional gas way. In either case, issue a | |
7199 | warning. */ | |
7200 | intel_parser.op_modifier &= ~was_offset; | |
64a0c779 | 7201 | } |
a724f0f4 | 7202 | else |
64e74474 | 7203 | strcat (intel_parser.disp, "["); |
a724f0f4 JB |
7204 | |
7205 | /* Add a '+' to the displacement string if necessary. */ | |
7206 | if (*intel_parser.disp != '\0' | |
7207 | && *(intel_parser.disp + strlen (intel_parser.disp) - 1) != '+') | |
7208 | strcat (intel_parser.disp, "+"); | |
64a0c779 | 7209 | |
a724f0f4 JB |
7210 | if (intel_expr () |
7211 | && (len = intel_parser.op_string - start - 1, | |
7212 | intel_match_token (']'))) | |
64a0c779 | 7213 | { |
a724f0f4 JB |
7214 | /* Preserve brackets when the operand is an offset expression. */ |
7215 | if (intel_parser.in_offset) | |
7216 | strcat (intel_parser.disp, "]"); | |
7217 | else | |
7218 | { | |
7219 | --intel_parser.in_bracket; | |
7220 | if (i.base_reg || i.index_reg) | |
7221 | intel_parser.is_mem = 1; | |
7222 | if (!intel_parser.is_mem) | |
7223 | { | |
7224 | if (!(intel_parser.op_modifier & (1 << T_OFFSET))) | |
7225 | /* Defer the warning until all of the operand was parsed. */ | |
7226 | intel_parser.is_mem = -1; | |
7227 | else if (!quiet_warnings) | |
4eed87de AM |
7228 | as_warn (_("`[%.*s]' taken to mean just `%.*s'"), |
7229 | len, start, len, start); | |
a724f0f4 JB |
7230 | } |
7231 | } | |
7232 | intel_parser.op_modifier |= was_offset; | |
64a0c779 | 7233 | |
a724f0f4 | 7234 | return 1; |
64a0c779 | 7235 | } |
a724f0f4 | 7236 | return 0; |
64a0c779 DN |
7237 | } |
7238 | ||
7239 | /* e10 e11 e10' | |
7240 | ||
7241 | e10' [ expr ] e10' | |
b77a7acd | 7242 | | Empty */ |
64a0c779 | 7243 | static int |
e3bb37b5 | 7244 | intel_e10 (void) |
64a0c779 | 7245 | { |
a724f0f4 JB |
7246 | if (!intel_e11 ()) |
7247 | return 0; | |
64a0c779 | 7248 | |
a724f0f4 | 7249 | while (cur_token.code == '[') |
64a0c779 | 7250 | { |
a724f0f4 | 7251 | if (!intel_bracket_expr ()) |
21d6c4af | 7252 | return 0; |
64a0c779 DN |
7253 | } |
7254 | ||
a724f0f4 | 7255 | return 1; |
64a0c779 DN |
7256 | } |
7257 | ||
64a0c779 | 7258 | /* e11 ( expr ) |
b77a7acd | 7259 | | [ expr ] |
64a0c779 DN |
7260 | | BYTE |
7261 | | WORD | |
7262 | | DWORD | |
9306ca4a | 7263 | | FWORD |
64a0c779 | 7264 | | QWORD |
9306ca4a JB |
7265 | | TBYTE |
7266 | | OWORD | |
7267 | | XMMWORD | |
4a1805b1 | 7268 | | $ |
64a0c779 DN |
7269 | | . |
7270 | | register | |
7271 | | id | |
7272 | | constant */ | |
7273 | static int | |
e3bb37b5 | 7274 | intel_e11 (void) |
64a0c779 | 7275 | { |
a724f0f4 | 7276 | switch (cur_token.code) |
64a0c779 | 7277 | { |
a724f0f4 JB |
7278 | /* e11 ( expr ) */ |
7279 | case '(': | |
64a0c779 DN |
7280 | intel_match_token ('('); |
7281 | strcat (intel_parser.disp, "("); | |
7282 | ||
7283 | if (intel_expr () && intel_match_token (')')) | |
e5cb08ac KH |
7284 | { |
7285 | strcat (intel_parser.disp, ")"); | |
7286 | return 1; | |
7287 | } | |
a724f0f4 | 7288 | return 0; |
4a1805b1 | 7289 | |
a724f0f4 JB |
7290 | /* e11 [ expr ] */ |
7291 | case '[': | |
a724f0f4 | 7292 | return intel_bracket_expr (); |
64a0c779 | 7293 | |
a724f0f4 JB |
7294 | /* e11 $ |
7295 | | . */ | |
7296 | case '.': | |
64a0c779 DN |
7297 | strcat (intel_parser.disp, cur_token.str); |
7298 | intel_match_token (cur_token.code); | |
21d6c4af DN |
7299 | |
7300 | /* Mark as a memory operand only if it's not already known to be an | |
7301 | offset expression. */ | |
a724f0f4 | 7302 | if (!intel_parser.in_offset) |
21d6c4af | 7303 | intel_parser.is_mem = 1; |
64a0c779 DN |
7304 | |
7305 | return 1; | |
64a0c779 | 7306 | |
a724f0f4 JB |
7307 | /* e11 register */ |
7308 | case T_REG: | |
7309 | { | |
7310 | const reg_entry *reg = intel_parser.reg = cur_token.reg; | |
64a0c779 | 7311 | |
a724f0f4 | 7312 | intel_match_token (T_REG); |
64a0c779 | 7313 | |
a724f0f4 JB |
7314 | /* Check for segment change. */ |
7315 | if (cur_token.code == ':') | |
7316 | { | |
7317 | if (!(reg->reg_type & (SReg2 | SReg3))) | |
7318 | { | |
4eed87de AM |
7319 | as_bad (_("`%s' is not a valid segment register"), |
7320 | reg->reg_name); | |
a724f0f4 JB |
7321 | return 0; |
7322 | } | |
7323 | else if (i.seg[i.mem_operands]) | |
7324 | as_warn (_("Extra segment override ignored")); | |
7325 | else | |
7326 | { | |
7327 | if (!intel_parser.in_offset) | |
7328 | intel_parser.is_mem = 1; | |
7329 | switch (reg->reg_num) | |
7330 | { | |
7331 | case 0: | |
7332 | i.seg[i.mem_operands] = &es; | |
7333 | break; | |
7334 | case 1: | |
7335 | i.seg[i.mem_operands] = &cs; | |
7336 | break; | |
7337 | case 2: | |
7338 | i.seg[i.mem_operands] = &ss; | |
7339 | break; | |
7340 | case 3: | |
7341 | i.seg[i.mem_operands] = &ds; | |
7342 | break; | |
7343 | case 4: | |
7344 | i.seg[i.mem_operands] = &fs; | |
7345 | break; | |
7346 | case 5: | |
7347 | i.seg[i.mem_operands] = &gs; | |
7348 | break; | |
7349 | } | |
7350 | } | |
7351 | } | |
64a0c779 | 7352 | |
a724f0f4 JB |
7353 | /* Not a segment register. Check for register scaling. */ |
7354 | else if (cur_token.code == '*') | |
7355 | { | |
7356 | if (!intel_parser.in_bracket) | |
7357 | { | |
7358 | as_bad (_("Register scaling only allowed in memory operands")); | |
7359 | return 0; | |
7360 | } | |
64a0c779 | 7361 | |
a724f0f4 JB |
7362 | if (reg->reg_type & Reg16) /* Disallow things like [si*1]. */ |
7363 | reg = i386_regtab + REGNAM_AX + 4; /* sp is invalid as index */ | |
7364 | else if (i.index_reg) | |
7365 | reg = i386_regtab + REGNAM_EAX + 4; /* esp is invalid as index */ | |
64a0c779 | 7366 | |
a724f0f4 JB |
7367 | /* What follows must be a valid scale. */ |
7368 | intel_match_token ('*'); | |
7369 | i.index_reg = reg; | |
7370 | i.types[this_operand] |= BaseIndex; | |
64a0c779 | 7371 | |
a724f0f4 JB |
7372 | /* Set the scale after setting the register (otherwise, |
7373 | i386_scale will complain) */ | |
7374 | if (cur_token.code == '+' || cur_token.code == '-') | |
7375 | { | |
7376 | char *str, sign = cur_token.code; | |
7377 | intel_match_token (cur_token.code); | |
7378 | if (cur_token.code != T_CONST) | |
7379 | { | |
7380 | as_bad (_("Syntax error: Expecting a constant, got `%s'"), | |
7381 | cur_token.str); | |
7382 | return 0; | |
7383 | } | |
7384 | str = (char *) xmalloc (strlen (cur_token.str) + 2); | |
7385 | strcpy (str + 1, cur_token.str); | |
7386 | *str = sign; | |
7387 | if (!i386_scale (str)) | |
7388 | return 0; | |
7389 | free (str); | |
7390 | } | |
7391 | else if (!i386_scale (cur_token.str)) | |
64a0c779 | 7392 | return 0; |
a724f0f4 JB |
7393 | intel_match_token (cur_token.code); |
7394 | } | |
64a0c779 | 7395 | |
a724f0f4 JB |
7396 | /* No scaling. If this is a memory operand, the register is either a |
7397 | base register (first occurrence) or an index register (second | |
7398 | occurrence). */ | |
7b0441f6 | 7399 | else if (intel_parser.in_bracket) |
a724f0f4 | 7400 | { |
64a0c779 | 7401 | |
a724f0f4 JB |
7402 | if (!i.base_reg) |
7403 | i.base_reg = reg; | |
7404 | else if (!i.index_reg) | |
7405 | i.index_reg = reg; | |
7406 | else | |
7407 | { | |
7408 | as_bad (_("Too many register references in memory operand")); | |
7409 | return 0; | |
7410 | } | |
64a0c779 | 7411 | |
a724f0f4 JB |
7412 | i.types[this_operand] |= BaseIndex; |
7413 | } | |
4a1805b1 | 7414 | |
4d1bb795 JB |
7415 | /* It's neither base nor index. */ |
7416 | else if (!intel_parser.in_offset && !intel_parser.is_mem) | |
a724f0f4 JB |
7417 | { |
7418 | i.types[this_operand] |= reg->reg_type & ~BaseIndex; | |
7419 | i.op[this_operand].regs = reg; | |
7420 | i.reg_operands++; | |
7421 | } | |
7422 | else | |
7423 | { | |
7424 | as_bad (_("Invalid use of register")); | |
7425 | return 0; | |
7426 | } | |
64a0c779 | 7427 | |
a724f0f4 JB |
7428 | /* Since registers are not part of the displacement string (except |
7429 | when we're parsing offset operands), we may need to remove any | |
7430 | preceding '+' from the displacement string. */ | |
7431 | if (*intel_parser.disp != '\0' | |
7432 | && !intel_parser.in_offset) | |
7433 | { | |
7434 | char *s = intel_parser.disp; | |
7435 | s += strlen (s) - 1; | |
7436 | if (*s == '+') | |
7437 | *s = '\0'; | |
7438 | } | |
4a1805b1 | 7439 | |
a724f0f4 JB |
7440 | return 1; |
7441 | } | |
7442 | ||
7443 | /* e11 BYTE | |
7444 | | WORD | |
7445 | | DWORD | |
7446 | | FWORD | |
7447 | | QWORD | |
7448 | | TBYTE | |
7449 | | OWORD | |
7450 | | XMMWORD */ | |
7451 | case T_BYTE: | |
7452 | case T_WORD: | |
7453 | case T_DWORD: | |
7454 | case T_FWORD: | |
7455 | case T_QWORD: | |
7456 | case T_TBYTE: | |
7457 | case T_XMMWORD: | |
7458 | intel_match_token (cur_token.code); | |
64a0c779 | 7459 | |
a724f0f4 JB |
7460 | if (cur_token.code == T_PTR) |
7461 | return 1; | |
7462 | ||
7463 | /* It must have been an identifier. */ | |
7464 | intel_putback_token (); | |
7465 | cur_token.code = T_ID; | |
7466 | /* FALLTHRU */ | |
7467 | ||
7468 | /* e11 id | |
7469 | | constant */ | |
7470 | case T_ID: | |
7471 | if (!intel_parser.in_offset && intel_parser.is_mem <= 0) | |
9306ca4a JB |
7472 | { |
7473 | symbolS *symbolP; | |
7474 | ||
a724f0f4 JB |
7475 | /* The identifier represents a memory reference only if it's not |
7476 | preceded by an offset modifier and if it's not an equate. */ | |
9306ca4a JB |
7477 | symbolP = symbol_find(cur_token.str); |
7478 | if (!symbolP || S_GET_SEGMENT(symbolP) != absolute_section) | |
7479 | intel_parser.is_mem = 1; | |
7480 | } | |
a724f0f4 | 7481 | /* FALLTHRU */ |
64a0c779 | 7482 | |
a724f0f4 JB |
7483 | case T_CONST: |
7484 | case '-': | |
7485 | case '+': | |
7486 | { | |
7487 | char *save_str, sign = 0; | |
64a0c779 | 7488 | |
a724f0f4 JB |
7489 | /* Allow constants that start with `+' or `-'. */ |
7490 | if (cur_token.code == '-' || cur_token.code == '+') | |
7491 | { | |
7492 | sign = cur_token.code; | |
7493 | intel_match_token (cur_token.code); | |
7494 | if (cur_token.code != T_CONST) | |
7495 | { | |
7496 | as_bad (_("Syntax error: Expecting a constant, got `%s'"), | |
7497 | cur_token.str); | |
7498 | return 0; | |
7499 | } | |
7500 | } | |
64a0c779 | 7501 | |
a724f0f4 JB |
7502 | save_str = (char *) xmalloc (strlen (cur_token.str) + 2); |
7503 | strcpy (save_str + !!sign, cur_token.str); | |
7504 | if (sign) | |
7505 | *save_str = sign; | |
64a0c779 | 7506 | |
a724f0f4 JB |
7507 | /* Get the next token to check for register scaling. */ |
7508 | intel_match_token (cur_token.code); | |
64a0c779 | 7509 | |
4eed87de AM |
7510 | /* Check if this constant is a scaling factor for an |
7511 | index register. */ | |
a724f0f4 JB |
7512 | if (cur_token.code == '*') |
7513 | { | |
7514 | if (intel_match_token ('*') && cur_token.code == T_REG) | |
7515 | { | |
7516 | const reg_entry *reg = cur_token.reg; | |
7517 | ||
7518 | if (!intel_parser.in_bracket) | |
7519 | { | |
4eed87de AM |
7520 | as_bad (_("Register scaling only allowed " |
7521 | "in memory operands")); | |
a724f0f4 JB |
7522 | return 0; |
7523 | } | |
7524 | ||
4eed87de AM |
7525 | /* Disallow things like [1*si]. |
7526 | sp and esp are invalid as index. */ | |
7527 | if (reg->reg_type & Reg16) | |
7528 | reg = i386_regtab + REGNAM_AX + 4; | |
a724f0f4 | 7529 | else if (i.index_reg) |
4eed87de | 7530 | reg = i386_regtab + REGNAM_EAX + 4; |
a724f0f4 JB |
7531 | |
7532 | /* The constant is followed by `* reg', so it must be | |
7533 | a valid scale. */ | |
7534 | i.index_reg = reg; | |
7535 | i.types[this_operand] |= BaseIndex; | |
7536 | ||
7537 | /* Set the scale after setting the register (otherwise, | |
7538 | i386_scale will complain) */ | |
7539 | if (!i386_scale (save_str)) | |
64a0c779 | 7540 | return 0; |
a724f0f4 JB |
7541 | intel_match_token (T_REG); |
7542 | ||
7543 | /* Since registers are not part of the displacement | |
7544 | string, we may need to remove any preceding '+' from | |
7545 | the displacement string. */ | |
7546 | if (*intel_parser.disp != '\0') | |
7547 | { | |
7548 | char *s = intel_parser.disp; | |
7549 | s += strlen (s) - 1; | |
7550 | if (*s == '+') | |
7551 | *s = '\0'; | |
7552 | } | |
7553 | ||
7554 | free (save_str); | |
7555 | ||
7556 | return 1; | |
7557 | } | |
64a0c779 | 7558 | |
a724f0f4 JB |
7559 | /* The constant was not used for register scaling. Since we have |
7560 | already consumed the token following `*' we now need to put it | |
7561 | back in the stream. */ | |
64a0c779 | 7562 | intel_putback_token (); |
a724f0f4 | 7563 | } |
64a0c779 | 7564 | |
a724f0f4 JB |
7565 | /* Add the constant to the displacement string. */ |
7566 | strcat (intel_parser.disp, save_str); | |
7567 | free (save_str); | |
64a0c779 | 7568 | |
a724f0f4 JB |
7569 | return 1; |
7570 | } | |
64a0c779 DN |
7571 | } |
7572 | ||
64a0c779 DN |
7573 | as_bad (_("Unrecognized token '%s'"), cur_token.str); |
7574 | return 0; | |
7575 | } | |
7576 | ||
64a0c779 DN |
7577 | /* Match the given token against cur_token. If they match, read the next |
7578 | token from the operand string. */ | |
7579 | static int | |
e3bb37b5 | 7580 | intel_match_token (int code) |
64a0c779 DN |
7581 | { |
7582 | if (cur_token.code == code) | |
7583 | { | |
7584 | intel_get_token (); | |
7585 | return 1; | |
7586 | } | |
7587 | else | |
7588 | { | |
0477af35 | 7589 | as_bad (_("Unexpected token `%s'"), cur_token.str); |
64a0c779 DN |
7590 | return 0; |
7591 | } | |
7592 | } | |
7593 | ||
64a0c779 DN |
7594 | /* Read a new token from intel_parser.op_string and store it in cur_token. */ |
7595 | static void | |
e3bb37b5 | 7596 | intel_get_token (void) |
64a0c779 DN |
7597 | { |
7598 | char *end_op; | |
7599 | const reg_entry *reg; | |
7600 | struct intel_token new_token; | |
7601 | ||
7602 | new_token.code = T_NIL; | |
7603 | new_token.reg = NULL; | |
7604 | new_token.str = NULL; | |
7605 | ||
4a1805b1 | 7606 | /* Free the memory allocated to the previous token and move |
64a0c779 DN |
7607 | cur_token to prev_token. */ |
7608 | if (prev_token.str) | |
7609 | free (prev_token.str); | |
7610 | ||
7611 | prev_token = cur_token; | |
7612 | ||
7613 | /* Skip whitespace. */ | |
7614 | while (is_space_char (*intel_parser.op_string)) | |
7615 | intel_parser.op_string++; | |
7616 | ||
7617 | /* Return an empty token if we find nothing else on the line. */ | |
7618 | if (*intel_parser.op_string == '\0') | |
7619 | { | |
7620 | cur_token = new_token; | |
7621 | return; | |
7622 | } | |
7623 | ||
7624 | /* The new token cannot be larger than the remainder of the operand | |
7625 | string. */ | |
a724f0f4 | 7626 | new_token.str = (char *) xmalloc (strlen (intel_parser.op_string) + 1); |
64a0c779 DN |
7627 | new_token.str[0] = '\0'; |
7628 | ||
7629 | if (strchr ("0123456789", *intel_parser.op_string)) | |
7630 | { | |
7631 | char *p = new_token.str; | |
7632 | char *q = intel_parser.op_string; | |
7633 | new_token.code = T_CONST; | |
7634 | ||
7635 | /* Allow any kind of identifier char to encompass floating point and | |
7636 | hexadecimal numbers. */ | |
7637 | while (is_identifier_char (*q)) | |
7638 | *p++ = *q++; | |
7639 | *p = '\0'; | |
7640 | ||
7641 | /* Recognize special symbol names [0-9][bf]. */ | |
7642 | if (strlen (intel_parser.op_string) == 2 | |
4a1805b1 | 7643 | && (intel_parser.op_string[1] == 'b' |
64a0c779 DN |
7644 | || intel_parser.op_string[1] == 'f')) |
7645 | new_token.code = T_ID; | |
7646 | } | |
7647 | ||
4d1bb795 | 7648 | else if ((reg = parse_register (intel_parser.op_string, &end_op)) != NULL) |
64a0c779 | 7649 | { |
4d1bb795 JB |
7650 | size_t len = end_op - intel_parser.op_string; |
7651 | ||
64a0c779 DN |
7652 | new_token.code = T_REG; |
7653 | new_token.reg = reg; | |
7654 | ||
4d1bb795 JB |
7655 | memcpy (new_token.str, intel_parser.op_string, len); |
7656 | new_token.str[len] = '\0'; | |
64a0c779 DN |
7657 | } |
7658 | ||
7659 | else if (is_identifier_char (*intel_parser.op_string)) | |
7660 | { | |
7661 | char *p = new_token.str; | |
7662 | char *q = intel_parser.op_string; | |
7663 | ||
7664 | /* A '.' or '$' followed by an identifier char is an identifier. | |
7665 | Otherwise, it's operator '.' followed by an expression. */ | |
7666 | if ((*q == '.' || *q == '$') && !is_identifier_char (*(q + 1))) | |
7667 | { | |
9306ca4a JB |
7668 | new_token.code = '.'; |
7669 | new_token.str[0] = '.'; | |
64a0c779 DN |
7670 | new_token.str[1] = '\0'; |
7671 | } | |
7672 | else | |
7673 | { | |
7674 | while (is_identifier_char (*q) || *q == '@') | |
7675 | *p++ = *q++; | |
7676 | *p = '\0'; | |
7677 | ||
9306ca4a JB |
7678 | if (strcasecmp (new_token.str, "NOT") == 0) |
7679 | new_token.code = '~'; | |
7680 | ||
7681 | else if (strcasecmp (new_token.str, "MOD") == 0) | |
7682 | new_token.code = '%'; | |
7683 | ||
7684 | else if (strcasecmp (new_token.str, "AND") == 0) | |
7685 | new_token.code = '&'; | |
7686 | ||
7687 | else if (strcasecmp (new_token.str, "OR") == 0) | |
7688 | new_token.code = '|'; | |
7689 | ||
7690 | else if (strcasecmp (new_token.str, "XOR") == 0) | |
7691 | new_token.code = '^'; | |
7692 | ||
7693 | else if (strcasecmp (new_token.str, "SHL") == 0) | |
7694 | new_token.code = T_SHL; | |
7695 | ||
7696 | else if (strcasecmp (new_token.str, "SHR") == 0) | |
7697 | new_token.code = T_SHR; | |
7698 | ||
7699 | else if (strcasecmp (new_token.str, "BYTE") == 0) | |
64a0c779 DN |
7700 | new_token.code = T_BYTE; |
7701 | ||
7702 | else if (strcasecmp (new_token.str, "WORD") == 0) | |
7703 | new_token.code = T_WORD; | |
7704 | ||
7705 | else if (strcasecmp (new_token.str, "DWORD") == 0) | |
7706 | new_token.code = T_DWORD; | |
7707 | ||
9306ca4a JB |
7708 | else if (strcasecmp (new_token.str, "FWORD") == 0) |
7709 | new_token.code = T_FWORD; | |
7710 | ||
64a0c779 DN |
7711 | else if (strcasecmp (new_token.str, "QWORD") == 0) |
7712 | new_token.code = T_QWORD; | |
7713 | ||
9306ca4a JB |
7714 | else if (strcasecmp (new_token.str, "TBYTE") == 0 |
7715 | /* XXX remove (gcc still uses it) */ | |
7716 | || strcasecmp (new_token.str, "XWORD") == 0) | |
7717 | new_token.code = T_TBYTE; | |
7718 | ||
7719 | else if (strcasecmp (new_token.str, "XMMWORD") == 0 | |
7720 | || strcasecmp (new_token.str, "OWORD") == 0) | |
7721 | new_token.code = T_XMMWORD; | |
64a0c779 DN |
7722 | |
7723 | else if (strcasecmp (new_token.str, "PTR") == 0) | |
7724 | new_token.code = T_PTR; | |
7725 | ||
7726 | else if (strcasecmp (new_token.str, "SHORT") == 0) | |
7727 | new_token.code = T_SHORT; | |
7728 | ||
7729 | else if (strcasecmp (new_token.str, "OFFSET") == 0) | |
7730 | { | |
7731 | new_token.code = T_OFFSET; | |
7732 | ||
7733 | /* ??? This is not mentioned in the MASM grammar but gcc | |
7734 | makes use of it with -mintel-syntax. OFFSET may be | |
7735 | followed by FLAT: */ | |
7736 | if (strncasecmp (q, " FLAT:", 6) == 0) | |
7737 | strcat (new_token.str, " FLAT:"); | |
7738 | } | |
7739 | ||
7740 | /* ??? This is not mentioned in the MASM grammar. */ | |
7741 | else if (strcasecmp (new_token.str, "FLAT") == 0) | |
a724f0f4 JB |
7742 | { |
7743 | new_token.code = T_OFFSET; | |
7744 | if (*q == ':') | |
7745 | strcat (new_token.str, ":"); | |
7746 | else | |
7747 | as_bad (_("`:' expected")); | |
7748 | } | |
64a0c779 DN |
7749 | |
7750 | else | |
7751 | new_token.code = T_ID; | |
7752 | } | |
7753 | } | |
7754 | ||
9306ca4a JB |
7755 | else if (strchr ("+-/*%|&^:[]()~", *intel_parser.op_string)) |
7756 | { | |
7757 | new_token.code = *intel_parser.op_string; | |
7758 | new_token.str[0] = *intel_parser.op_string; | |
7759 | new_token.str[1] = '\0'; | |
7760 | } | |
7761 | ||
7762 | else if (strchr ("<>", *intel_parser.op_string) | |
7763 | && *intel_parser.op_string == *(intel_parser.op_string + 1)) | |
7764 | { | |
7765 | new_token.code = *intel_parser.op_string == '<' ? T_SHL : T_SHR; | |
7766 | new_token.str[0] = *intel_parser.op_string; | |
7767 | new_token.str[1] = *intel_parser.op_string; | |
7768 | new_token.str[2] = '\0'; | |
7769 | } | |
7770 | ||
64a0c779 | 7771 | else |
0477af35 | 7772 | as_bad (_("Unrecognized token `%s'"), intel_parser.op_string); |
64a0c779 DN |
7773 | |
7774 | intel_parser.op_string += strlen (new_token.str); | |
7775 | cur_token = new_token; | |
7776 | } | |
7777 | ||
64a0c779 DN |
7778 | /* Put cur_token back into the token stream and make cur_token point to |
7779 | prev_token. */ | |
7780 | static void | |
e3bb37b5 | 7781 | intel_putback_token (void) |
64a0c779 | 7782 | { |
a724f0f4 JB |
7783 | if (cur_token.code != T_NIL) |
7784 | { | |
7785 | intel_parser.op_string -= strlen (cur_token.str); | |
7786 | free (cur_token.str); | |
7787 | } | |
64a0c779 | 7788 | cur_token = prev_token; |
4a1805b1 | 7789 | |
64a0c779 DN |
7790 | /* Forget prev_token. */ |
7791 | prev_token.code = T_NIL; | |
7792 | prev_token.reg = NULL; | |
7793 | prev_token.str = NULL; | |
7794 | } | |
54cfded0 | 7795 | |
a4447b93 | 7796 | int |
1df69f4f | 7797 | tc_x86_regname_to_dw2regnum (char *regname) |
54cfded0 AM |
7798 | { |
7799 | unsigned int regnum; | |
7800 | unsigned int regnames_count; | |
089dfecd | 7801 | static const char *const regnames_32[] = |
54cfded0 | 7802 | { |
a4447b93 RH |
7803 | "eax", "ecx", "edx", "ebx", |
7804 | "esp", "ebp", "esi", "edi", | |
089dfecd JB |
7805 | "eip", "eflags", NULL, |
7806 | "st0", "st1", "st2", "st3", | |
7807 | "st4", "st5", "st6", "st7", | |
7808 | NULL, NULL, | |
7809 | "xmm0", "xmm1", "xmm2", "xmm3", | |
7810 | "xmm4", "xmm5", "xmm6", "xmm7", | |
7811 | "mm0", "mm1", "mm2", "mm3", | |
43fd16e4 JB |
7812 | "mm4", "mm5", "mm6", "mm7", |
7813 | "fcw", "fsw", "mxcsr", | |
7814 | "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, | |
7815 | "tr", "ldtr" | |
54cfded0 | 7816 | }; |
089dfecd | 7817 | static const char *const regnames_64[] = |
54cfded0 | 7818 | { |
089dfecd JB |
7819 | "rax", "rdx", "rcx", "rbx", |
7820 | "rsi", "rdi", "rbp", "rsp", | |
7821 | "r8", "r9", "r10", "r11", | |
54cfded0 | 7822 | "r12", "r13", "r14", "r15", |
089dfecd JB |
7823 | "rip", |
7824 | "xmm0", "xmm1", "xmm2", "xmm3", | |
7825 | "xmm4", "xmm5", "xmm6", "xmm7", | |
7826 | "xmm8", "xmm9", "xmm10", "xmm11", | |
7827 | "xmm12", "xmm13", "xmm14", "xmm15", | |
7828 | "st0", "st1", "st2", "st3", | |
7829 | "st4", "st5", "st6", "st7", | |
7830 | "mm0", "mm1", "mm2", "mm3", | |
43fd16e4 JB |
7831 | "mm4", "mm5", "mm6", "mm7", |
7832 | "rflags", | |
7833 | "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, | |
7834 | "fs.base", "gs.base", NULL, NULL, | |
7835 | "tr", "ldtr", | |
7836 | "mxcsr", "fcw", "fsw" | |
54cfded0 | 7837 | }; |
089dfecd | 7838 | const char *const *regnames; |
54cfded0 AM |
7839 | |
7840 | if (flag_code == CODE_64BIT) | |
7841 | { | |
7842 | regnames = regnames_64; | |
0cea6190 | 7843 | regnames_count = ARRAY_SIZE (regnames_64); |
54cfded0 AM |
7844 | } |
7845 | else | |
7846 | { | |
7847 | regnames = regnames_32; | |
0cea6190 | 7848 | regnames_count = ARRAY_SIZE (regnames_32); |
54cfded0 AM |
7849 | } |
7850 | ||
7851 | for (regnum = 0; regnum < regnames_count; regnum++) | |
089dfecd JB |
7852 | if (regnames[regnum] != NULL |
7853 | && strcmp (regname, regnames[regnum]) == 0) | |
54cfded0 AM |
7854 | return regnum; |
7855 | ||
54cfded0 AM |
7856 | return -1; |
7857 | } | |
7858 | ||
7859 | void | |
7860 | tc_x86_frame_initial_instructions (void) | |
7861 | { | |
a4447b93 RH |
7862 | static unsigned int sp_regno; |
7863 | ||
7864 | if (!sp_regno) | |
7865 | sp_regno = tc_x86_regname_to_dw2regnum (flag_code == CODE_64BIT | |
7866 | ? "rsp" : "esp"); | |
7867 | ||
7868 | cfi_add_CFA_def_cfa (sp_regno, -x86_cie_data_alignment); | |
7869 | cfi_add_CFA_offset (x86_dwarf2_return_column, x86_cie_data_alignment); | |
54cfded0 | 7870 | } |
d2b2c203 DJ |
7871 | |
7872 | int | |
7873 | i386_elf_section_type (const char *str, size_t len) | |
7874 | { | |
7875 | if (flag_code == CODE_64BIT | |
7876 | && len == sizeof ("unwind") - 1 | |
7877 | && strncmp (str, "unwind", 6) == 0) | |
7878 | return SHT_X86_64_UNWIND; | |
7879 | ||
7880 | return -1; | |
7881 | } | |
bb41ade5 AM |
7882 | |
7883 | #ifdef TE_PE | |
7884 | void | |
7885 | tc_pe_dwarf2_emit_offset (symbolS *symbol, unsigned int size) | |
7886 | { | |
7887 | expressionS expr; | |
7888 | ||
7889 | expr.X_op = O_secrel; | |
7890 | expr.X_add_symbol = symbol; | |
7891 | expr.X_add_number = 0; | |
7892 | emit_expr (&expr, size); | |
7893 | } | |
7894 | #endif | |
3b22753a L |
7895 | |
7896 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
7897 | /* For ELF on x86-64, add support for SHF_X86_64_LARGE. */ | |
7898 | ||
7899 | int | |
7900 | x86_64_section_letter (int letter, char **ptr_msg) | |
7901 | { | |
7902 | if (flag_code == CODE_64BIT) | |
7903 | { | |
7904 | if (letter == 'l') | |
7905 | return SHF_X86_64_LARGE; | |
7906 | ||
7907 | *ptr_msg = _("Bad .section directive: want a,l,w,x,M,S,G,T in string"); | |
64e74474 | 7908 | } |
3b22753a | 7909 | else |
64e74474 | 7910 | *ptr_msg = _("Bad .section directive: want a,w,x,M,S,G,T in string"); |
3b22753a L |
7911 | return -1; |
7912 | } | |
7913 | ||
7914 | int | |
7915 | x86_64_section_word (char *str, size_t len) | |
7916 | { | |
8620418b | 7917 | if (len == 5 && flag_code == CODE_64BIT && CONST_STRNEQ (str, "large")) |
3b22753a L |
7918 | return SHF_X86_64_LARGE; |
7919 | ||
7920 | return -1; | |
7921 | } | |
7922 | ||
7923 | static void | |
7924 | handle_large_common (int small ATTRIBUTE_UNUSED) | |
7925 | { | |
7926 | if (flag_code != CODE_64BIT) | |
7927 | { | |
7928 | s_comm_internal (0, elf_common_parse); | |
7929 | as_warn (_(".largecomm supported only in 64bit mode, producing .comm")); | |
7930 | } | |
7931 | else | |
7932 | { | |
7933 | static segT lbss_section; | |
7934 | asection *saved_com_section_ptr = elf_com_section_ptr; | |
7935 | asection *saved_bss_section = bss_section; | |
7936 | ||
7937 | if (lbss_section == NULL) | |
7938 | { | |
7939 | flagword applicable; | |
7940 | segT seg = now_seg; | |
7941 | subsegT subseg = now_subseg; | |
7942 | ||
7943 | /* The .lbss section is for local .largecomm symbols. */ | |
7944 | lbss_section = subseg_new (".lbss", 0); | |
7945 | applicable = bfd_applicable_section_flags (stdoutput); | |
7946 | bfd_set_section_flags (stdoutput, lbss_section, | |
7947 | applicable & SEC_ALLOC); | |
7948 | seg_info (lbss_section)->bss = 1; | |
7949 | ||
7950 | subseg_set (seg, subseg); | |
7951 | } | |
7952 | ||
7953 | elf_com_section_ptr = &_bfd_elf_large_com_section; | |
7954 | bss_section = lbss_section; | |
7955 | ||
7956 | s_comm_internal (0, elf_common_parse); | |
7957 | ||
7958 | elf_com_section_ptr = saved_com_section_ptr; | |
7959 | bss_section = saved_bss_section; | |
7960 | } | |
7961 | } | |
7962 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ |