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53e95fcf | 1 | /* Target-dependent code for the x86-64 for GDB, the GNU debugger. |
ce0eebec AC |
2 | |
3 | Copyright 2001, 2002 Free Software Foundation, Inc. | |
4 | ||
53e95fcf JS |
5 | Contributed by Jiri Smid, SuSE Labs. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | #include "defs.h" | |
25 | #include "inferior.h" | |
26 | #include "gdbcore.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "arch-utils.h" | |
29 | #include "regcache.h" | |
30 | #include "symfile.h" | |
31 | #include "x86-64-tdep.h" | |
32 | #include "dwarf2cfi.h" | |
82dbc5f7 | 33 | #include "gdb_assert.h" |
53e95fcf | 34 | |
53e95fcf JS |
35 | /* Register numbers of various important registers. */ |
36 | #define RAX_REGNUM 0 | |
de220d0f | 37 | #define RDX_REGNUM 3 |
53e95fcf JS |
38 | #define RDI_REGNUM 5 |
39 | #define EFLAGS_REGNUM 17 | |
de220d0f ML |
40 | #define XMM1_REGNUM 39 |
41 | ||
42 | struct register_info | |
43 | { | |
44 | int size; | |
45 | char *name; | |
46 | struct type **type; | |
47 | }; | |
53e95fcf JS |
48 | |
49 | /* x86_64_register_raw_size_table[i] is the number of bytes of storage in | |
50 | GDB's register array occupied by register i. */ | |
de220d0f | 51 | static struct register_info x86_64_register_info_table[] = { |
91fd20f7 ML |
52 | /* 0 */ {8, "rax", &builtin_type_int64}, |
53 | /* 1 */ {8, "rbx", &builtin_type_int64}, | |
54 | /* 2 */ {8, "rcx", &builtin_type_int64}, | |
55 | /* 3 */ {8, "rdx", &builtin_type_int64}, | |
56 | /* 4 */ {8, "rsi", &builtin_type_int64}, | |
57 | /* 5 */ {8, "rdi", &builtin_type_int64}, | |
58 | /* 6 */ {8, "rbp", &builtin_type_void_func_ptr}, | |
59 | /* 7 */ {8, "rsp", &builtin_type_void_func_ptr}, | |
60 | /* 8 */ {8, "r8", &builtin_type_int64}, | |
61 | /* 9 */ {8, "r9", &builtin_type_int64}, | |
62 | /* 10 */ {8, "r10", &builtin_type_int64}, | |
63 | /* 11 */ {8, "r11", &builtin_type_int64}, | |
64 | /* 12 */ {8, "r12", &builtin_type_int64}, | |
65 | /* 13 */ {8, "r13", &builtin_type_int64}, | |
66 | /* 14 */ {8, "r14", &builtin_type_int64}, | |
67 | /* 15 */ {8, "r15", &builtin_type_int64}, | |
68 | /* 16 */ {8, "rip", &builtin_type_void_func_ptr}, | |
69 | /* 17 */ {4, "eflags", &builtin_type_int32}, | |
70 | /* 18 */ {4, "ds", &builtin_type_int32}, | |
71 | /* 19 */ {4, "es", &builtin_type_int32}, | |
72 | /* 20 */ {4, "fs", &builtin_type_int32}, | |
73 | /* 21 */ {4, "gs", &builtin_type_int32}, | |
74 | /* 22 */ {10, "st0", &builtin_type_i387_ext}, | |
75 | /* 23 */ {10, "st1", &builtin_type_i387_ext}, | |
76 | /* 24 */ {10, "st2", &builtin_type_i387_ext}, | |
77 | /* 25 */ {10, "st3", &builtin_type_i387_ext}, | |
78 | /* 26 */ {10, "st4", &builtin_type_i387_ext}, | |
79 | /* 27 */ {10, "st5", &builtin_type_i387_ext}, | |
80 | /* 28 */ {10, "st6", &builtin_type_i387_ext}, | |
81 | /* 29 */ {10, "st7", &builtin_type_i387_ext}, | |
82 | /* 30 */ {4, "fctrl", &builtin_type_int32}, | |
83 | /* 31 */ {4, "fstat", &builtin_type_int32}, | |
84 | /* 32 */ {4, "ftag", &builtin_type_int32}, | |
85 | /* 33 */ {4, "fiseg", &builtin_type_int32}, | |
86 | /* 34 */ {4, "fioff", &builtin_type_int32}, | |
87 | /* 35 */ {4, "foseg", &builtin_type_int32}, | |
88 | /* 36 */ {4, "fooff", &builtin_type_int32}, | |
89 | /* 37 */ {4, "fop", &builtin_type_int32}, | |
90 | /* 38 */ {16, "xmm0", &builtin_type_v4sf}, | |
91 | /* 39 */ {16, "xmm1", &builtin_type_v4sf}, | |
92 | /* 40 */ {16, "xmm2", &builtin_type_v4sf}, | |
93 | /* 41 */ {16, "xmm3", &builtin_type_v4sf}, | |
94 | /* 42 */ {16, "xmm4", &builtin_type_v4sf}, | |
95 | /* 43 */ {16, "xmm5", &builtin_type_v4sf}, | |
96 | /* 44 */ {16, "xmm6", &builtin_type_v4sf}, | |
97 | /* 45 */ {16, "xmm7", &builtin_type_v4sf}, | |
98 | /* 46 */ {16, "xmm8", &builtin_type_v4sf}, | |
99 | /* 47 */ {16, "xmm9", &builtin_type_v4sf}, | |
100 | /* 48 */ {16, "xmm10", &builtin_type_v4sf}, | |
101 | /* 49 */ {16, "xmm11", &builtin_type_v4sf}, | |
102 | /* 50 */ {16, "xmm12", &builtin_type_v4sf}, | |
103 | /* 51 */ {16, "xmm13", &builtin_type_v4sf}, | |
104 | /* 52 */ {16, "xmm14", &builtin_type_v4sf}, | |
105 | /* 53 */ {16, "xmm15", &builtin_type_v4sf}, | |
106 | /* 54 */ {4, "mxcsr", &builtin_type_int32} | |
53e95fcf JS |
107 | }; |
108 | ||
de220d0f ML |
109 | /* Number of all registers */ |
110 | #define X86_64_NUM_REGS (sizeof (x86_64_register_info_table) / \ | |
111 | sizeof (x86_64_register_info_table[0])) | |
112 | ||
113 | /* Number of general registers. */ | |
114 | #define X86_64_NUM_GREGS (22) | |
115 | ||
116 | int x86_64_num_regs = X86_64_NUM_REGS; | |
117 | int x86_64_num_gregs = X86_64_NUM_GREGS; | |
118 | ||
b6779aa2 AC |
119 | /* Did we already print a note about frame pointer? */ |
120 | int omit_fp_note_printed = 0; | |
121 | ||
53e95fcf JS |
122 | /* Number of bytes of storage in the actual machine representation for |
123 | register REGNO. */ | |
124 | int | |
125 | x86_64_register_raw_size (int regno) | |
126 | { | |
de220d0f | 127 | return x86_64_register_info_table[regno].size; |
53e95fcf JS |
128 | } |
129 | ||
130 | /* x86_64_register_byte_table[i] is the offset into the register file of the | |
131 | start of register number i. We initialize this from | |
de220d0f | 132 | x86_64_register_info_table. */ |
53e95fcf JS |
133 | int x86_64_register_byte_table[X86_64_NUM_REGS]; |
134 | ||
135 | /* Index within `registers' of the first byte of the space for register REGNO. */ | |
136 | int | |
137 | x86_64_register_byte (int regno) | |
138 | { | |
139 | return x86_64_register_byte_table[regno]; | |
140 | } | |
141 | ||
142 | /* Return the GDB type object for the "standard" data type of data in | |
143 | register N. */ | |
144 | static struct type * | |
145 | x86_64_register_virtual_type (int regno) | |
146 | { | |
de220d0f | 147 | return *x86_64_register_info_table[regno].type; |
53e95fcf JS |
148 | } |
149 | ||
53e95fcf JS |
150 | /* x86_64_register_convertible is true if register N's virtual format is |
151 | different from its raw format. Note that this definition assumes | |
152 | that the host supports IEEE 32-bit floats, since it doesn't say | |
153 | that SSE registers need conversion. Even if we can't find a | |
154 | counterexample, this is still sloppy. */ | |
155 | int | |
156 | x86_64_register_convertible (int regno) | |
157 | { | |
158 | return IS_FP_REGNUM (regno); | |
159 | } | |
160 | ||
161 | /* Convert data from raw format for register REGNUM in buffer FROM to | |
162 | virtual format with type TYPE in buffer TO. In principle both | |
163 | formats are identical except that the virtual format has two extra | |
164 | bytes appended that aren't used. We set these to zero. */ | |
165 | void | |
166 | x86_64_register_convert_to_virtual (int regnum, struct type *type, | |
167 | char *from, char *to) | |
168 | { | |
82dbc5f7 AC |
169 | char buf[12]; |
170 | DOUBLEST d; | |
171 | /* We only support floating-point values. */ | |
172 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
173 | { | |
174 | warning ("Cannot convert floating-point register value " | |
175 | "to non-floating-point type."); | |
176 | memset (to, 0, TYPE_LENGTH (type)); | |
177 | return; | |
178 | } | |
179 | /* First add the necessary padding. */ | |
180 | memcpy (buf, from, FPU_REG_RAW_SIZE); | |
181 | memset (buf + FPU_REG_RAW_SIZE, 0, sizeof buf - FPU_REG_RAW_SIZE); | |
182 | /* Convert to TYPE. This should be a no-op, if TYPE is equivalent | |
183 | to the extended floating-point format used by the FPU. */ | |
ce0eebec AC |
184 | convert_typed_floating (to, type, buf, |
185 | x86_64_register_virtual_type (regnum)); | |
53e95fcf JS |
186 | } |
187 | ||
188 | /* Convert data from virtual format with type TYPE in buffer FROM to | |
189 | raw format for register REGNUM in buffer TO. Simply omit the two | |
190 | unused bytes. */ | |
191 | ||
192 | void | |
193 | x86_64_register_convert_to_raw (struct type *type, int regnum, | |
194 | char *from, char *to) | |
195 | { | |
ce0eebec | 196 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 12); |
82dbc5f7 | 197 | /* Simply omit the two unused bytes. */ |
53e95fcf JS |
198 | memcpy (to, from, FPU_REG_RAW_SIZE); |
199 | } | |
53e95fcf JS |
200 | |
201 | /* This is the variable that is set with "set disassembly-flavour", and | |
202 | its legitimate values. */ | |
203 | static const char att_flavour[] = "att"; | |
204 | static const char intel_flavour[] = "intel"; | |
205 | static const char *valid_flavours[] = { | |
206 | att_flavour, | |
207 | intel_flavour, | |
208 | NULL | |
209 | }; | |
210 | static const char *disassembly_flavour = att_flavour; | |
211 | ||
212 | static CORE_ADDR | |
213 | x86_64_push_return_address (CORE_ADDR pc, CORE_ADDR sp) | |
214 | { | |
215 | char buf[8]; | |
216 | ||
217 | store_unsigned_integer (buf, 8, CALL_DUMMY_ADDRESS ()); | |
218 | ||
219 | write_memory (sp - 8, buf, 8); | |
220 | return sp - 8; | |
221 | } | |
222 | ||
223 | void | |
224 | x86_64_pop_frame (void) | |
225 | { | |
226 | generic_pop_current_frame (cfi_pop_frame); | |
227 | } | |
228 | \f | |
229 | ||
230 | /* The returning of values is done according to the special algorithm. | |
231 | Some types are returned in registers an some (big structures) in memory. | |
232 | See ABI for details. | |
233 | */ | |
234 | ||
235 | #define MAX_CLASSES 4 | |
236 | ||
237 | enum x86_64_reg_class | |
238 | { | |
239 | X86_64_NO_CLASS, | |
240 | X86_64_INTEGER_CLASS, | |
241 | X86_64_INTEGERSI_CLASS, | |
242 | X86_64_SSE_CLASS, | |
243 | X86_64_SSESF_CLASS, | |
244 | X86_64_SSEDF_CLASS, | |
245 | X86_64_SSEUP_CLASS, | |
246 | X86_64_X87_CLASS, | |
247 | X86_64_X87UP_CLASS, | |
248 | X86_64_MEMORY_CLASS | |
249 | }; | |
250 | ||
251 | /* Return the union class of CLASS1 and CLASS2. | |
252 | See the x86-64 ABI for details. */ | |
253 | ||
254 | static enum x86_64_reg_class | |
255 | merge_classes (enum x86_64_reg_class class1, enum x86_64_reg_class class2) | |
256 | { | |
257 | /* Rule #1: If both classes are equal, this is the resulting class. */ | |
258 | if (class1 == class2) | |
259 | return class1; | |
260 | ||
261 | /* Rule #2: If one of the classes is NO_CLASS, the resulting class is | |
262 | the other class. */ | |
263 | if (class1 == X86_64_NO_CLASS) | |
264 | return class2; | |
265 | if (class2 == X86_64_NO_CLASS) | |
266 | return class1; | |
267 | ||
268 | /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ | |
269 | if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) | |
270 | return X86_64_MEMORY_CLASS; | |
271 | ||
272 | /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ | |
273 | if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) | |
274 | || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) | |
275 | return X86_64_INTEGERSI_CLASS; | |
276 | if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS | |
277 | || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) | |
278 | return X86_64_INTEGER_CLASS; | |
279 | ||
280 | /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ | |
281 | if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS | |
282 | || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) | |
283 | return X86_64_MEMORY_CLASS; | |
284 | ||
285 | /* Rule #6: Otherwise class SSE is used. */ | |
286 | return X86_64_SSE_CLASS; | |
287 | } | |
288 | ||
289 | ||
290 | /* Classify the argument type. | |
291 | CLASSES will be filled by the register class used to pass each word | |
292 | of the operand. The number of words is returned. In case the parameter | |
293 | should be passed in memory, 0 is returned. As a special case for zero | |
294 | sized containers, classes[0] will be NO_CLASS and 1 is returned. | |
295 | ||
296 | See the x86-64 PS ABI for details. | |
297 | */ | |
298 | ||
299 | static int | |
300 | classify_argument (struct type *type, | |
301 | enum x86_64_reg_class classes[MAX_CLASSES], int bit_offset) | |
302 | { | |
303 | int bytes = TYPE_LENGTH (type); | |
304 | int words = (bytes + 8 - 1) / 8; | |
305 | ||
306 | switch (TYPE_CODE (type)) | |
307 | { | |
308 | case TYPE_CODE_ARRAY: | |
309 | case TYPE_CODE_STRUCT: | |
310 | case TYPE_CODE_UNION: | |
311 | { | |
312 | int i; | |
313 | enum x86_64_reg_class subclasses[MAX_CLASSES]; | |
314 | ||
315 | /* On x86-64 we pass structures larger than 16 bytes on the stack. */ | |
316 | if (bytes > 16) | |
317 | return 0; | |
318 | ||
319 | for (i = 0; i < words; i++) | |
320 | classes[i] = X86_64_NO_CLASS; | |
321 | ||
322 | /* Zero sized arrays or structures are NO_CLASS. We return 0 to | |
323 | signalize memory class, so handle it as special case. */ | |
324 | if (!words) | |
325 | { | |
326 | classes[0] = X86_64_NO_CLASS; | |
327 | return 1; | |
328 | } | |
329 | switch (TYPE_CODE (type)) | |
330 | { | |
331 | case TYPE_CODE_STRUCT: | |
332 | { | |
333 | int j; | |
334 | for (j = 0; j < type->nfields; ++j) | |
335 | { | |
336 | int num = classify_argument (type->fields[j].type, | |
337 | subclasses, | |
338 | (type->fields[j].loc.bitpos | |
339 | + bit_offset) % 256); | |
340 | if (!num) | |
341 | return 0; | |
342 | for (i = 0; i < num; i++) | |
343 | { | |
344 | int pos = | |
345 | (type->fields[j].loc.bitpos + bit_offset) / 8 / 8; | |
346 | classes[i + pos] = | |
347 | merge_classes (subclasses[i], classes[i + pos]); | |
348 | } | |
349 | } | |
350 | } | |
351 | break; | |
352 | case TYPE_CODE_ARRAY: | |
353 | { | |
354 | int num; | |
355 | ||
356 | num = classify_argument (type->target_type, | |
357 | subclasses, bit_offset); | |
358 | if (!num) | |
359 | return 0; | |
360 | ||
361 | /* The partial classes are now full classes. */ | |
362 | if (subclasses[0] == X86_64_SSESF_CLASS && bytes != 4) | |
363 | subclasses[0] = X86_64_SSE_CLASS; | |
364 | if (subclasses[0] == X86_64_INTEGERSI_CLASS && bytes != 4) | |
365 | subclasses[0] = X86_64_INTEGER_CLASS; | |
366 | ||
367 | for (i = 0; i < words; i++) | |
368 | classes[i] = subclasses[i % num]; | |
369 | } | |
370 | break; | |
371 | case TYPE_CODE_UNION: | |
372 | { | |
373 | int j; | |
374 | { | |
375 | for (j = 0; j < type->nfields; ++j) | |
376 | { | |
377 | int num; | |
378 | num = classify_argument (type->fields[j].type, | |
379 | subclasses, bit_offset); | |
380 | if (!num) | |
381 | return 0; | |
382 | for (i = 0; i < num; i++) | |
383 | classes[i] = merge_classes (subclasses[i], classes[i]); | |
384 | } | |
385 | } | |
386 | } | |
387 | break; | |
388 | } | |
389 | /* Final merger cleanup. */ | |
390 | for (i = 0; i < words; i++) | |
391 | { | |
392 | /* If one class is MEMORY, everything should be passed in | |
393 | memory. */ | |
394 | if (classes[i] == X86_64_MEMORY_CLASS) | |
395 | return 0; | |
396 | ||
397 | /* The X86_64_SSEUP_CLASS should be always preceeded by | |
398 | X86_64_SSE_CLASS. */ | |
399 | if (classes[i] == X86_64_SSEUP_CLASS | |
400 | && (i == 0 || classes[i - 1] != X86_64_SSE_CLASS)) | |
401 | classes[i] = X86_64_SSE_CLASS; | |
402 | ||
403 | /* X86_64_X87UP_CLASS should be preceeded by X86_64_X87_CLASS. */ | |
404 | if (classes[i] == X86_64_X87UP_CLASS | |
405 | && (i == 0 || classes[i - 1] != X86_64_X87_CLASS)) | |
406 | classes[i] = X86_64_SSE_CLASS; | |
407 | } | |
408 | return words; | |
409 | } | |
410 | break; | |
411 | case TYPE_CODE_FLT: | |
412 | switch (bytes) | |
413 | { | |
414 | case 4: | |
415 | if (!(bit_offset % 64)) | |
416 | classes[0] = X86_64_SSESF_CLASS; | |
417 | else | |
418 | classes[0] = X86_64_SSE_CLASS; | |
419 | return 1; | |
420 | case 8: | |
421 | classes[0] = X86_64_SSEDF_CLASS; | |
422 | return 1; | |
423 | case 16: | |
424 | classes[0] = X86_64_X87_CLASS; | |
425 | classes[1] = X86_64_X87UP_CLASS; | |
426 | return 2; | |
427 | } | |
428 | break; | |
429 | case TYPE_CODE_INT: | |
430 | case TYPE_CODE_PTR: | |
431 | switch (bytes) | |
432 | { | |
433 | case 1: | |
434 | case 2: | |
435 | case 4: | |
436 | case 8: | |
437 | if (bytes * 8 + bit_offset <= 32) | |
438 | classes[0] = X86_64_INTEGERSI_CLASS; | |
439 | else | |
440 | classes[0] = X86_64_INTEGER_CLASS; | |
441 | return 1; | |
442 | case 16: | |
443 | classes[0] = classes[1] = X86_64_INTEGER_CLASS; | |
444 | return 2; | |
445 | default: | |
446 | break; | |
447 | } | |
448 | case TYPE_CODE_VOID: | |
449 | return 0; | |
450 | } | |
ce0eebec AC |
451 | internal_error (__FILE__, __LINE__, |
452 | "classify_argument: unknown argument type"); | |
53e95fcf JS |
453 | } |
454 | ||
455 | /* Examine the argument and return set number of register required in each | |
456 | class. Return 0 ifif parameter should be passed in memory. */ | |
457 | ||
458 | static int | |
459 | examine_argument (enum x86_64_reg_class classes[MAX_CLASSES], | |
460 | int n, int *int_nregs, int *sse_nregs) | |
461 | { | |
462 | *int_nregs = 0; | |
463 | *sse_nregs = 0; | |
464 | if (!n) | |
465 | return 0; | |
466 | for (n--; n >= 0; n--) | |
467 | switch (classes[n]) | |
468 | { | |
469 | case X86_64_INTEGER_CLASS: | |
470 | case X86_64_INTEGERSI_CLASS: | |
471 | (*int_nregs)++; | |
472 | break; | |
473 | case X86_64_SSE_CLASS: | |
474 | case X86_64_SSESF_CLASS: | |
475 | case X86_64_SSEDF_CLASS: | |
476 | (*sse_nregs)++; | |
477 | break; | |
478 | case X86_64_NO_CLASS: | |
479 | case X86_64_SSEUP_CLASS: | |
480 | case X86_64_X87_CLASS: | |
481 | case X86_64_X87UP_CLASS: | |
482 | break; | |
483 | case X86_64_MEMORY_CLASS: | |
ce0eebec AC |
484 | internal_error (__FILE__, __LINE__, |
485 | "examine_argument: unexpected memory class"); | |
53e95fcf JS |
486 | } |
487 | return 1; | |
488 | } | |
489 | ||
490 | #define RET_INT_REGS 2 | |
491 | #define RET_SSE_REGS 2 | |
492 | ||
493 | /* Check if the structure in value_type is returned in registers or in | |
494 | memory. If this function returns 1, gdb will call STORE_STRUCT_RETURN and | |
495 | EXTRACT_STRUCT_VALUE_ADDRESS else STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE | |
496 | will be used. */ | |
497 | int | |
498 | x86_64_use_struct_convention (int gcc_p, struct type *value_type) | |
499 | { | |
500 | enum x86_64_reg_class class[MAX_CLASSES]; | |
501 | int n = classify_argument (value_type, class, 0); | |
502 | int needed_intregs; | |
503 | int needed_sseregs; | |
504 | ||
505 | return (!n || | |
506 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
507 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS); | |
508 | } | |
509 | ||
510 | ||
511 | /* Extract from an array REGBUF containing the (raw) register state, a | |
512 | function return value of TYPE, and copy that, in virtual format, | |
513 | into VALBUF. */ | |
514 | ||
515 | void | |
516 | x86_64_extract_return_value (struct type *type, char *regbuf, char *valbuf) | |
517 | { | |
518 | enum x86_64_reg_class class[MAX_CLASSES]; | |
519 | int n = classify_argument (type, class, 0); | |
520 | int needed_intregs; | |
521 | int needed_sseregs; | |
522 | int intreg = 0; | |
523 | int ssereg = 0; | |
524 | int offset = 0; | |
525 | int ret_int_r[RET_INT_REGS] = { RAX_REGNUM, RDX_REGNUM }; | |
526 | int ret_sse_r[RET_SSE_REGS] = { XMM0_REGNUM, XMM1_REGNUM }; | |
527 | ||
528 | if (!n || | |
529 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
530 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS) | |
531 | { /* memory class */ | |
532 | CORE_ADDR addr; | |
533 | memcpy (&addr, regbuf, REGISTER_RAW_SIZE (RAX_REGNUM)); | |
534 | read_memory (addr, valbuf, TYPE_LENGTH (type)); | |
535 | return; | |
536 | } | |
537 | else | |
538 | { | |
539 | int i; | |
540 | for (i = 0; i < n; i++) | |
541 | { | |
542 | switch (class[i]) | |
543 | { | |
544 | case X86_64_NO_CLASS: | |
545 | break; | |
546 | case X86_64_INTEGER_CLASS: | |
547 | memcpy (valbuf + offset, | |
548 | regbuf + REGISTER_BYTE (ret_int_r[(intreg + 1) / 2]), | |
549 | 8); | |
550 | offset += 8; | |
551 | intreg += 2; | |
552 | break; | |
553 | case X86_64_INTEGERSI_CLASS: | |
554 | memcpy (valbuf + offset, | |
555 | regbuf + REGISTER_BYTE (ret_int_r[intreg / 2]), 4); | |
556 | offset += 8; | |
557 | intreg++; | |
558 | break; | |
559 | case X86_64_SSEDF_CLASS: | |
560 | case X86_64_SSESF_CLASS: | |
561 | case X86_64_SSE_CLASS: | |
562 | memcpy (valbuf + offset, | |
563 | regbuf + REGISTER_BYTE (ret_sse_r[(ssereg + 1) / 2]), | |
564 | 8); | |
565 | offset += 8; | |
566 | ssereg += 2; | |
567 | break; | |
568 | case X86_64_SSEUP_CLASS: | |
569 | memcpy (valbuf + offset + 8, | |
570 | regbuf + REGISTER_BYTE (ret_sse_r[ssereg / 2]), 8); | |
571 | offset += 8; | |
572 | ssereg++; | |
573 | break; | |
574 | case X86_64_X87_CLASS: | |
575 | memcpy (valbuf + offset, regbuf + REGISTER_BYTE (FP0_REGNUM), | |
576 | 8); | |
577 | offset += 8; | |
578 | break; | |
579 | case X86_64_X87UP_CLASS: | |
580 | memcpy (valbuf + offset, | |
581 | regbuf + REGISTER_BYTE (FP0_REGNUM) + 8, 8); | |
582 | offset += 8; | |
583 | break; | |
584 | case X86_64_MEMORY_CLASS: | |
585 | default: | |
586 | internal_error (__FILE__, __LINE__, | |
587 | "Unexpected argument class"); | |
588 | } | |
589 | } | |
590 | } | |
591 | } | |
592 | ||
593 | /* Handled by unwind informations. */ | |
594 | static void | |
595 | x86_64_frame_init_saved_regs (struct frame_info *fi) | |
596 | { | |
597 | } | |
598 | ||
599 | #define INT_REGS 6 | |
600 | #define SSE_REGS 16 | |
601 | ||
53e95fcf | 602 | CORE_ADDR |
d45fc520 | 603 | x86_64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
53e95fcf JS |
604 | int struct_return, CORE_ADDR struct_addr) |
605 | { | |
606 | int intreg = 0; | |
607 | int ssereg = 0; | |
608 | int i; | |
ce0eebec | 609 | static int int_parameter_registers[INT_REGS] = { |
de220d0f ML |
610 | 5 /* RDI */ , 4 /* RSI */ , |
611 | 3 /* RDX */ , 2 /* RCX */ , | |
91fd20f7 | 612 | 8 /* R8 */ , 9 /* R9 */ |
ce0eebec | 613 | }; |
53e95fcf | 614 | /* XMM0 - XMM15 */ |
ce0eebec | 615 | static int sse_parameter_registers[SSE_REGS] = { |
de220d0f ML |
616 | XMM1_REGNUM - 1, XMM1_REGNUM, XMM1_REGNUM + 1, XMM1_REGNUM + 2, |
617 | XMM1_REGNUM + 3, XMM1_REGNUM + 4, XMM1_REGNUM + 5, XMM1_REGNUM + 6, | |
618 | XMM1_REGNUM + 7, XMM1_REGNUM + 8, XMM1_REGNUM + 9, XMM1_REGNUM + 10, | |
619 | XMM1_REGNUM + 11, XMM1_REGNUM + 12, XMM1_REGNUM + 13, XMM1_REGNUM + 14 | |
ce0eebec AC |
620 | }; |
621 | int stack_values_count = 0; | |
82dbc5f7 | 622 | int *stack_values; |
e9f30c21 | 623 | stack_values = alloca (nargs * sizeof (int)); |
53e95fcf JS |
624 | for (i = 0; i < nargs; i++) |
625 | { | |
626 | enum x86_64_reg_class class[MAX_CLASSES]; | |
627 | int n = classify_argument (args[i]->type, class, 0); | |
628 | int needed_intregs; | |
629 | int needed_sseregs; | |
630 | ||
631 | if (!n || | |
632 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) | |
82dbc5f7 AC |
633 | || intreg / 2 + needed_intregs > INT_REGS |
634 | || ssereg / 2 + needed_sseregs > SSE_REGS) | |
ce0eebec AC |
635 | { /* memory class */ |
636 | stack_values[stack_values_count++] = i; | |
53e95fcf JS |
637 | } |
638 | else | |
639 | { | |
640 | int j; | |
641 | for (j = 0; j < n; j++) | |
642 | { | |
643 | int offset = 0; | |
644 | switch (class[j]) | |
645 | { | |
646 | case X86_64_NO_CLASS: | |
647 | break; | |
648 | case X86_64_INTEGER_CLASS: | |
ce0eebec AC |
649 | write_register_gen (int_parameter_registers |
650 | [(intreg + 1) / 2], | |
53e95fcf JS |
651 | VALUE_CONTENTS_ALL (args[i]) + offset); |
652 | offset += 8; | |
653 | intreg += 2; | |
654 | break; | |
655 | case X86_64_INTEGERSI_CLASS: | |
656 | write_register_gen (int_parameter_registers[intreg / 2], | |
657 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
658 | offset += 8; | |
659 | intreg++; | |
660 | break; | |
661 | case X86_64_SSEDF_CLASS: | |
662 | case X86_64_SSESF_CLASS: | |
663 | case X86_64_SSE_CLASS: | |
ce0eebec AC |
664 | write_register_gen (sse_parameter_registers |
665 | [(ssereg + 1) / 2], | |
53e95fcf JS |
666 | VALUE_CONTENTS_ALL (args[i]) + offset); |
667 | offset += 8; | |
668 | ssereg += 2; | |
669 | break; | |
670 | case X86_64_SSEUP_CLASS: | |
671 | write_register_gen (sse_parameter_registers[ssereg / 2], | |
672 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
673 | offset += 8; | |
674 | ssereg++; | |
675 | break; | |
676 | case X86_64_X87_CLASS: | |
53e95fcf | 677 | case X86_64_MEMORY_CLASS: |
ce0eebec | 678 | stack_values[stack_values_count++] = i; |
82dbc5f7 AC |
679 | break; |
680 | case X86_64_X87UP_CLASS: | |
53e95fcf JS |
681 | break; |
682 | default: | |
683 | internal_error (__FILE__, __LINE__, | |
684 | "Unexpected argument class"); | |
685 | } | |
686 | intreg += intreg % 2; | |
687 | ssereg += ssereg % 2; | |
688 | } | |
689 | } | |
690 | } | |
82dbc5f7 AC |
691 | while (--stack_values_count >= 0) |
692 | { | |
e9f30c21 | 693 | struct value *arg = args[stack_values[stack_values_count]]; |
82dbc5f7 AC |
694 | int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg)); |
695 | len += 7; | |
696 | len -= len % 8; | |
697 | sp -= len; | |
698 | write_memory (sp, VALUE_CONTENTS_ALL (arg), len); | |
699 | } | |
53e95fcf JS |
700 | return sp; |
701 | } | |
702 | ||
703 | /* Write into the appropriate registers a function return value stored | |
704 | in VALBUF of type TYPE, given in virtual format. */ | |
705 | void | |
706 | x86_64_store_return_value (struct type *type, char *valbuf) | |
707 | { | |
708 | int len = TYPE_LENGTH (type); | |
709 | ||
710 | if (TYPE_CODE_FLT == TYPE_CODE (type)) | |
711 | { | |
712 | /* Floating-point return values can be found in %st(0). */ | |
713 | if (len == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT | |
714 | && TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext) | |
715 | { | |
716 | /* Copy straight over. */ | |
717 | write_register_bytes (REGISTER_BYTE (FP0_REGNUM), valbuf, | |
718 | FPU_REG_RAW_SIZE); | |
719 | } | |
720 | else | |
721 | { | |
722 | char buf[FPU_REG_RAW_SIZE]; | |
723 | DOUBLEST val; | |
724 | ||
725 | /* Convert the value found in VALBUF to the extended | |
726 | floating point format used by the FPU. This is probably | |
727 | not exactly how it would happen on the target itself, but | |
728 | it is the best we can do. */ | |
729 | val = extract_floating (valbuf, TYPE_LENGTH (type)); | |
730 | floatformat_from_doublest (&floatformat_i387_ext, &val, buf); | |
731 | write_register_bytes (REGISTER_BYTE (FP0_REGNUM), buf, | |
732 | FPU_REG_RAW_SIZE); | |
733 | } | |
734 | } | |
735 | else | |
736 | { | |
737 | int low_size = REGISTER_RAW_SIZE (0); | |
738 | int high_size = REGISTER_RAW_SIZE (1); | |
739 | ||
740 | if (len <= low_size) | |
741 | write_register_bytes (REGISTER_BYTE (0), valbuf, len); | |
742 | else if (len <= (low_size + high_size)) | |
743 | { | |
744 | write_register_bytes (REGISTER_BYTE (0), valbuf, low_size); | |
745 | write_register_bytes (REGISTER_BYTE (1), | |
746 | valbuf + low_size, len - low_size); | |
747 | } | |
748 | else | |
749 | internal_error (__FILE__, __LINE__, | |
750 | "Cannot store return value of %d bytes long.", len); | |
751 | } | |
752 | } | |
753 | \f | |
754 | ||
755 | static char * | |
756 | x86_64_register_name (int reg_nr) | |
757 | { | |
de220d0f | 758 | if (reg_nr < 0 || reg_nr >= X86_64_NUM_REGS) |
53e95fcf | 759 | return NULL; |
de220d0f | 760 | return x86_64_register_info_table[reg_nr].name; |
53e95fcf JS |
761 | } |
762 | \f | |
763 | ||
764 | ||
765 | /* We have two flavours of disassembly. The machinery on this page | |
766 | deals with switching between those. */ | |
767 | ||
768 | static int | |
769 | gdb_print_insn_x86_64 (bfd_vma memaddr, disassemble_info * info) | |
770 | { | |
771 | if (disassembly_flavour == att_flavour) | |
772 | return print_insn_i386_att (memaddr, info); | |
773 | else if (disassembly_flavour == intel_flavour) | |
774 | return print_insn_i386_intel (memaddr, info); | |
775 | /* Never reached -- disassembly_flavour is always either att_flavour | |
776 | or intel_flavour. */ | |
777 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); | |
778 | } | |
779 | \f | |
780 | ||
781 | /* Store the address of the place in which to copy the structure the | |
782 | subroutine will return. This is called from call_function. */ | |
783 | void | |
784 | x86_64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) | |
785 | { | |
786 | write_register (RDI_REGNUM, addr); | |
787 | } | |
788 | ||
789 | int | |
790 | x86_64_frameless_function_invocation (struct frame_info *frame) | |
791 | { | |
792 | return 0; | |
793 | } | |
794 | ||
e76e1718 ML |
795 | /* If a function with debugging information and known beginning |
796 | is detected, we will return pc of the next line in the source | |
797 | code. With this approach we effectively skip the prolog. */ | |
798 | ||
799 | #define PROLOG_BUFSIZE 4 | |
53e95fcf JS |
800 | CORE_ADDR |
801 | x86_64_skip_prologue (CORE_ADDR pc) | |
802 | { | |
e76e1718 ML |
803 | int i, firstline, currline; |
804 | struct symtab_and_line v_sal; | |
805 | struct symbol *v_function; | |
806 | CORE_ADDR salendaddr = 0, endaddr = 0; | |
807 | ||
808 | /* We will handle only functions beginning with: | |
809 | 55 pushq %rbp | |
810 | 48 89 e5 movq %rsp,%rbp | |
811 | */ | |
812 | unsigned char prolog_expect[PROLOG_BUFSIZE] = { 0x55, 0x48, 0x89, 0xe5 }, | |
813 | prolog_buf[PROLOG_BUFSIZE]; | |
814 | ||
815 | read_memory (pc, (char *) prolog_buf, PROLOG_BUFSIZE); | |
816 | ||
b6779aa2 AC |
817 | /* First check, whether pc points to pushq %rbp. If not, |
818 | * print a recommendation to enable frame pointer. */ | |
819 | if (prolog_expect[0] != prolog_buf[0]) | |
820 | { | |
821 | if (!omit_fp_note_printed) | |
822 | { | |
823 | printf_filtered | |
824 | ("NOTE: This function doesn't seem to have a valid prologue.\n" | |
825 | " Try to add -fno-omit-frame-pointer tou your gcc's CFLAGS.\n"); | |
826 | omit_fp_note_printed++; | |
827 | } | |
e76e1718 | 828 | return pc; |
b6779aa2 AC |
829 | } |
830 | /* Valid prolog continues with movq %rsp,%rbp. */ | |
831 | for (i = 1; i < PROLOG_BUFSIZE; i++) | |
832 | if (prolog_expect[i] != prolog_buf[i]) | |
833 | return pc + 1; /* First instruction after pushq %rbp. */ | |
e76e1718 ML |
834 | |
835 | v_function = find_pc_function (pc); | |
836 | v_sal = find_pc_line (pc, 0); | |
837 | ||
838 | /* If pc doesn't point to a function with debuginfo, | |
839 | some of the following may be NULL. */ | |
840 | if (!v_function || !v_function->ginfo.value.block || !v_sal.symtab) | |
841 | return pc; | |
842 | ||
843 | firstline = v_sal.line; | |
844 | currline = firstline; | |
845 | salendaddr = v_sal.end; | |
846 | endaddr = v_function->ginfo.value.block->endaddr; | |
847 | ||
848 | for (i = 0; i < v_sal.symtab->linetable->nitems; i++) | |
849 | if (v_sal.symtab->linetable->item[i].line > firstline | |
850 | && v_sal.symtab->linetable->item[i].pc >= salendaddr | |
851 | && v_sal.symtab->linetable->item[i].pc < endaddr) | |
852 | { | |
853 | pc = v_sal.symtab->linetable->item[i].pc; | |
854 | currline = v_sal.symtab->linetable->item[i].line; | |
855 | break; | |
856 | } | |
857 | ||
53e95fcf JS |
858 | return pc; |
859 | } | |
860 | ||
861 | /* Sequence of bytes for breakpoint instruction. */ | |
862 | static unsigned char * | |
de220d0f | 863 | x86_64_breakpoint_from_pc (CORE_ADDR * pc, int *lenptr) |
53e95fcf JS |
864 | { |
865 | static unsigned char breakpoint[] = { 0xcc }; | |
866 | *lenptr = 1; | |
867 | return breakpoint; | |
868 | } | |
869 | ||
870 | static struct gdbarch * | |
871 | i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
872 | { | |
873 | struct gdbarch *gdbarch; | |
874 | struct gdbarch_tdep *tdep; | |
de220d0f | 875 | int i, sum; |
53e95fcf JS |
876 | |
877 | /* Find a candidate among the list of pre-declared architectures. */ | |
878 | for (arches = gdbarch_list_lookup_by_info (arches, &info); | |
879 | arches != NULL; | |
880 | arches = gdbarch_list_lookup_by_info (arches->next, &info)) | |
881 | { | |
882 | switch (info.bfd_arch_info->mach) | |
883 | { | |
884 | case bfd_mach_x86_64: | |
885 | case bfd_mach_x86_64_intel_syntax: | |
886 | switch (gdbarch_bfd_arch_info (arches->gdbarch)->mach) | |
887 | { | |
888 | case bfd_mach_x86_64: | |
889 | case bfd_mach_x86_64_intel_syntax: | |
890 | return arches->gdbarch; | |
891 | case bfd_mach_i386_i386: | |
892 | case bfd_mach_i386_i8086: | |
893 | case bfd_mach_i386_i386_intel_syntax: | |
894 | break; | |
895 | default: | |
896 | internal_error (__FILE__, __LINE__, | |
897 | "i386_gdbarch_init: unknown machine type"); | |
898 | } | |
899 | break; | |
900 | case bfd_mach_i386_i386: | |
901 | case bfd_mach_i386_i8086: | |
902 | case bfd_mach_i386_i386_intel_syntax: | |
903 | switch (gdbarch_bfd_arch_info (arches->gdbarch)->mach) | |
904 | { | |
905 | case bfd_mach_x86_64: | |
906 | case bfd_mach_x86_64_intel_syntax: | |
907 | break; | |
908 | case bfd_mach_i386_i386: | |
909 | case bfd_mach_i386_i8086: | |
910 | case bfd_mach_i386_i386_intel_syntax: | |
911 | return arches->gdbarch; | |
912 | default: | |
913 | internal_error (__FILE__, __LINE__, | |
914 | "i386_gdbarch_init: unknown machine type"); | |
915 | } | |
916 | break; | |
917 | default: | |
918 | internal_error (__FILE__, __LINE__, | |
919 | "i386_gdbarch_init: unknown machine type"); | |
920 | } | |
921 | } | |
922 | ||
923 | tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep)); | |
924 | gdbarch = gdbarch_alloc (&info, tdep); | |
925 | ||
926 | switch (info.bfd_arch_info->mach) | |
927 | { | |
928 | case bfd_mach_x86_64: | |
929 | case bfd_mach_x86_64_intel_syntax: | |
96297dab | 930 | tdep->num_xmm_regs = 16; |
53e95fcf JS |
931 | break; |
932 | case bfd_mach_i386_i386: | |
933 | case bfd_mach_i386_i8086: | |
934 | case bfd_mach_i386_i386_intel_syntax: | |
935 | /* This is place for definition of i386 target vector. */ | |
936 | break; | |
937 | default: | |
938 | internal_error (__FILE__, __LINE__, | |
939 | "i386_gdbarch_init: unknown machine type"); | |
940 | } | |
941 | ||
942 | set_gdbarch_long_bit (gdbarch, 64); | |
943 | set_gdbarch_long_long_bit (gdbarch, 64); | |
944 | set_gdbarch_ptr_bit (gdbarch, 64); | |
945 | ||
946 | set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext); | |
53e95fcf JS |
947 | |
948 | set_gdbarch_num_regs (gdbarch, X86_64_NUM_REGS); | |
949 | set_gdbarch_register_name (gdbarch, x86_64_register_name); | |
950 | set_gdbarch_register_size (gdbarch, 8); | |
951 | set_gdbarch_register_raw_size (gdbarch, x86_64_register_raw_size); | |
952 | set_gdbarch_max_register_raw_size (gdbarch, 16); | |
953 | set_gdbarch_register_byte (gdbarch, x86_64_register_byte); | |
de220d0f | 954 | |
53e95fcf JS |
955 | /* Total amount of space needed to store our copies of the machine's register |
956 | (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS) */ | |
de220d0f ML |
957 | for (i = 0, sum = 0; i < X86_64_NUM_REGS; i++) |
958 | sum += x86_64_register_info_table[i].size; | |
959 | set_gdbarch_register_bytes (gdbarch, sum); | |
0e7c5946 | 960 | set_gdbarch_register_virtual_size (gdbarch, generic_register_virtual_size); |
53e95fcf JS |
961 | set_gdbarch_max_register_virtual_size (gdbarch, 16); |
962 | ||
963 | set_gdbarch_register_virtual_type (gdbarch, x86_64_register_virtual_type); | |
964 | ||
965 | set_gdbarch_register_convertible (gdbarch, x86_64_register_convertible); | |
966 | set_gdbarch_register_convert_to_virtual (gdbarch, | |
967 | x86_64_register_convert_to_virtual); | |
968 | set_gdbarch_register_convert_to_raw (gdbarch, | |
969 | x86_64_register_convert_to_raw); | |
970 | ||
971 | /* Register numbers of various important registers. */ | |
972 | set_gdbarch_sp_regnum (gdbarch, 7); /* (rsp) Contains address of top of stack. */ | |
973 | set_gdbarch_fp_regnum (gdbarch, 6); /* (rbp) */ | |
974 | set_gdbarch_pc_regnum (gdbarch, 16); /* (rip) Contains program counter. */ | |
975 | ||
de220d0f | 976 | set_gdbarch_fp0_regnum (gdbarch, X86_64_NUM_GREGS); /* First FPU floating-point register. */ |
53e95fcf JS |
977 | |
978 | set_gdbarch_read_fp (gdbarch, cfi_read_fp); | |
53e95fcf JS |
979 | |
980 | /* Discard from the stack the innermost frame, restoring all registers. */ | |
981 | set_gdbarch_pop_frame (gdbarch, x86_64_pop_frame); | |
982 | ||
983 | /* FRAME_CHAIN takes a frame's nominal address and produces the frame's | |
984 | chain-pointer. */ | |
985 | set_gdbarch_frame_chain (gdbarch, cfi_frame_chain); | |
986 | ||
987 | set_gdbarch_frameless_function_invocation (gdbarch, | |
988 | x86_64_frameless_function_invocation); | |
989 | set_gdbarch_frame_saved_pc (gdbarch, x86_64_linux_frame_saved_pc); | |
990 | ||
991 | set_gdbarch_frame_args_address (gdbarch, default_frame_address); | |
992 | set_gdbarch_frame_locals_address (gdbarch, default_frame_address); | |
993 | ||
994 | /* Return number of bytes at start of arglist that are not really args. */ | |
995 | set_gdbarch_frame_args_skip (gdbarch, 8); | |
996 | ||
997 | set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); | |
998 | ||
999 | /* Frame pc initialization is handled by unwind informations. */ | |
1000 | set_gdbarch_init_frame_pc (gdbarch, cfi_init_frame_pc); | |
1001 | ||
1002 | /* Initialization of unwind informations. */ | |
1003 | set_gdbarch_init_extra_frame_info (gdbarch, cfi_init_extra_frame_info); | |
1004 | ||
1005 | /* Getting saved registers is handled by unwind informations. */ | |
1006 | set_gdbarch_get_saved_register (gdbarch, cfi_get_saved_register); | |
1007 | ||
1008 | set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); | |
1009 | ||
1010 | /* Cons up virtual frame pointer for trace */ | |
1011 | set_gdbarch_virtual_frame_pointer (gdbarch, cfi_virtual_frame_pointer); | |
1012 | ||
1013 | ||
1014 | set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); | |
1015 | ||
1016 | set_gdbarch_use_generic_dummy_frames (gdbarch, 1); | |
1017 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); | |
1018 | set_gdbarch_call_dummy_address (gdbarch, entry_point_address); | |
1019 | set_gdbarch_call_dummy_length (gdbarch, 0); | |
1020 | set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); | |
1021 | set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); | |
1022 | set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point); | |
1023 | set_gdbarch_call_dummy_words (gdbarch, 0); | |
1024 | set_gdbarch_sizeof_call_dummy_words (gdbarch, 0); | |
1025 | set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); | |
1026 | set_gdbarch_call_dummy_p (gdbarch, 1); | |
1027 | set_gdbarch_call_dummy_start_offset (gdbarch, 0); | |
1028 | set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); | |
1029 | set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); | |
1030 | set_gdbarch_push_return_address (gdbarch, x86_64_push_return_address); | |
1031 | set_gdbarch_push_arguments (gdbarch, x86_64_push_arguments); | |
1032 | ||
1033 | /* Return number of args passed to a frame, no way to tell. */ | |
1034 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); | |
1035 | /* Don't use default structure extract routine */ | |
1036 | set_gdbarch_extract_struct_value_address (gdbarch, 0); | |
1037 | ||
1038 | /* If USE_STRUCT_CONVENTION retruns 0, then gdb uses STORE_RETURN_VALUE | |
1039 | and EXTRACT_RETURN_VALUE to store/fetch the functions return value. It is | |
1040 | the case when structure is returned in registers. */ | |
1041 | set_gdbarch_use_struct_convention (gdbarch, x86_64_use_struct_convention); | |
1042 | ||
1043 | /* Store the address of the place in which to copy the structure the | |
1044 | subroutine will return. This is called from call_function. */ | |
1045 | set_gdbarch_store_struct_return (gdbarch, x86_64_store_struct_return); | |
1046 | ||
1047 | /* Extract from an array REGBUF containing the (raw) register state | |
1048 | a function return value of type TYPE, and copy that, in virtual format, | |
1049 | into VALBUF. */ | |
1050 | set_gdbarch_extract_return_value (gdbarch, x86_64_extract_return_value); | |
1051 | ||
1052 | ||
1053 | /* Write into the appropriate registers a function return value stored | |
1054 | in VALBUF of type TYPE, given in virtual format. */ | |
1055 | set_gdbarch_store_return_value (gdbarch, x86_64_store_return_value); | |
1056 | \f | |
1057 | ||
1058 | /* Offset from address of function to start of its code. */ | |
1059 | set_gdbarch_function_start_offset (gdbarch, 0); | |
1060 | ||
1061 | set_gdbarch_skip_prologue (gdbarch, x86_64_skip_prologue); | |
1062 | ||
1063 | set_gdbarch_saved_pc_after_call (gdbarch, x86_64_linux_saved_pc_after_call); | |
1064 | ||
1065 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
1066 | ||
91fd20f7 ML |
1067 | set_gdbarch_breakpoint_from_pc (gdbarch, |
1068 | (gdbarch_breakpoint_from_pc_ftype *) | |
1069 | x86_64_breakpoint_from_pc); | |
53e95fcf JS |
1070 | |
1071 | ||
1072 | /* Amount PC must be decremented by after a breakpoint. This is often the | |
1073 | number of bytes in BREAKPOINT but not always. */ | |
1074 | set_gdbarch_decr_pc_after_break (gdbarch, 1); | |
1075 | ||
b6af0555 JS |
1076 | /* Use dwarf2 debug frame informations. */ |
1077 | set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info); | |
53e95fcf JS |
1078 | return gdbarch; |
1079 | } | |
1080 | ||
1081 | void | |
1082 | _initialize_x86_64_tdep (void) | |
1083 | { | |
1084 | register_gdbarch_init (bfd_arch_i386, i386_gdbarch_init); | |
1085 | ||
1086 | /* Initialize the table saying where each register starts in the | |
1087 | register file. */ | |
1088 | { | |
1089 | int i, offset; | |
1090 | ||
1091 | offset = 0; | |
1092 | for (i = 0; i < X86_64_NUM_REGS; i++) | |
1093 | { | |
1094 | x86_64_register_byte_table[i] = offset; | |
de220d0f | 1095 | offset += x86_64_register_info_table[i].size; |
53e95fcf JS |
1096 | } |
1097 | } | |
1098 | ||
1099 | tm_print_insn = gdb_print_insn_x86_64; | |
1100 | tm_print_insn_info.mach = bfd_lookup_arch (bfd_arch_i386, 3)->mach; | |
1101 | ||
1102 | /* Add the variable that controls the disassembly flavour. */ | |
1103 | { | |
1104 | struct cmd_list_element *new_cmd; | |
1105 | ||
1106 | new_cmd = add_set_enum_cmd ("disassembly-flavour", no_class, | |
1107 | valid_flavours, &disassembly_flavour, "\ | |
1108 | Set the disassembly flavour, the valid values are \"att\" and \"intel\", \ | |
1109 | and the default value is \"att\".", &setlist); | |
1110 | add_show_from_set (new_cmd, &showlist); | |
1111 | } | |
1112 | } |