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53e95fcf | 1 | /* Target-dependent code for the x86-64 for GDB, the GNU debugger. |
ce0eebec | 2 | |
51603483 | 3 | Copyright 2001, 2002, 2003 Free Software Foundation, Inc. |
53e95fcf JS |
4 | Contributed by Jiri Smid, SuSE Labs. |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program 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 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program 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 this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "inferior.h" | |
25 | #include "gdbcore.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "arch-utils.h" | |
28 | #include "regcache.h" | |
29 | #include "symfile.h" | |
8a8ab2b9 | 30 | #include "objfiles.h" |
53e95fcf JS |
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 | |
0e04a514 | 40 | #define ST0_REGNUM 22 |
de220d0f ML |
41 | #define XMM1_REGNUM 39 |
42 | ||
43 | struct register_info | |
44 | { | |
45 | int size; | |
46 | char *name; | |
47 | struct type **type; | |
48 | }; | |
53e95fcf JS |
49 | |
50 | /* x86_64_register_raw_size_table[i] is the number of bytes of storage in | |
51 | GDB's register array occupied by register i. */ | |
de220d0f | 52 | static struct register_info x86_64_register_info_table[] = { |
91fd20f7 ML |
53 | /* 0 */ {8, "rax", &builtin_type_int64}, |
54 | /* 1 */ {8, "rbx", &builtin_type_int64}, | |
55 | /* 2 */ {8, "rcx", &builtin_type_int64}, | |
56 | /* 3 */ {8, "rdx", &builtin_type_int64}, | |
57 | /* 4 */ {8, "rsi", &builtin_type_int64}, | |
58 | /* 5 */ {8, "rdi", &builtin_type_int64}, | |
59 | /* 6 */ {8, "rbp", &builtin_type_void_func_ptr}, | |
60 | /* 7 */ {8, "rsp", &builtin_type_void_func_ptr}, | |
61 | /* 8 */ {8, "r8", &builtin_type_int64}, | |
62 | /* 9 */ {8, "r9", &builtin_type_int64}, | |
63 | /* 10 */ {8, "r10", &builtin_type_int64}, | |
64 | /* 11 */ {8, "r11", &builtin_type_int64}, | |
65 | /* 12 */ {8, "r12", &builtin_type_int64}, | |
66 | /* 13 */ {8, "r13", &builtin_type_int64}, | |
67 | /* 14 */ {8, "r14", &builtin_type_int64}, | |
68 | /* 15 */ {8, "r15", &builtin_type_int64}, | |
69 | /* 16 */ {8, "rip", &builtin_type_void_func_ptr}, | |
70 | /* 17 */ {4, "eflags", &builtin_type_int32}, | |
71 | /* 18 */ {4, "ds", &builtin_type_int32}, | |
72 | /* 19 */ {4, "es", &builtin_type_int32}, | |
73 | /* 20 */ {4, "fs", &builtin_type_int32}, | |
74 | /* 21 */ {4, "gs", &builtin_type_int32}, | |
75 | /* 22 */ {10, "st0", &builtin_type_i387_ext}, | |
76 | /* 23 */ {10, "st1", &builtin_type_i387_ext}, | |
77 | /* 24 */ {10, "st2", &builtin_type_i387_ext}, | |
78 | /* 25 */ {10, "st3", &builtin_type_i387_ext}, | |
79 | /* 26 */ {10, "st4", &builtin_type_i387_ext}, | |
80 | /* 27 */ {10, "st5", &builtin_type_i387_ext}, | |
81 | /* 28 */ {10, "st6", &builtin_type_i387_ext}, | |
82 | /* 29 */ {10, "st7", &builtin_type_i387_ext}, | |
83 | /* 30 */ {4, "fctrl", &builtin_type_int32}, | |
84 | /* 31 */ {4, "fstat", &builtin_type_int32}, | |
85 | /* 32 */ {4, "ftag", &builtin_type_int32}, | |
86 | /* 33 */ {4, "fiseg", &builtin_type_int32}, | |
87 | /* 34 */ {4, "fioff", &builtin_type_int32}, | |
88 | /* 35 */ {4, "foseg", &builtin_type_int32}, | |
89 | /* 36 */ {4, "fooff", &builtin_type_int32}, | |
90 | /* 37 */ {4, "fop", &builtin_type_int32}, | |
91 | /* 38 */ {16, "xmm0", &builtin_type_v4sf}, | |
92 | /* 39 */ {16, "xmm1", &builtin_type_v4sf}, | |
93 | /* 40 */ {16, "xmm2", &builtin_type_v4sf}, | |
94 | /* 41 */ {16, "xmm3", &builtin_type_v4sf}, | |
95 | /* 42 */ {16, "xmm4", &builtin_type_v4sf}, | |
96 | /* 43 */ {16, "xmm5", &builtin_type_v4sf}, | |
97 | /* 44 */ {16, "xmm6", &builtin_type_v4sf}, | |
98 | /* 45 */ {16, "xmm7", &builtin_type_v4sf}, | |
99 | /* 46 */ {16, "xmm8", &builtin_type_v4sf}, | |
100 | /* 47 */ {16, "xmm9", &builtin_type_v4sf}, | |
101 | /* 48 */ {16, "xmm10", &builtin_type_v4sf}, | |
102 | /* 49 */ {16, "xmm11", &builtin_type_v4sf}, | |
103 | /* 50 */ {16, "xmm12", &builtin_type_v4sf}, | |
104 | /* 51 */ {16, "xmm13", &builtin_type_v4sf}, | |
105 | /* 52 */ {16, "xmm14", &builtin_type_v4sf}, | |
106 | /* 53 */ {16, "xmm15", &builtin_type_v4sf}, | |
107 | /* 54 */ {4, "mxcsr", &builtin_type_int32} | |
53e95fcf JS |
108 | }; |
109 | ||
0e04a514 ML |
110 | /* This array is a mapping from Dwarf-2 register |
111 | numbering to GDB's one. Dwarf-2 numbering is | |
112 | defined in x86-64 ABI, section 3.6. */ | |
113 | static int x86_64_dwarf2gdb_regno_map[] = { | |
114 | 0, 1, 2, 3, /* RAX - RDX */ | |
115 | 4, 5, 6, 7, /* RSI, RDI, RBP, RSP */ | |
116 | 8, 9, 10, 11, /* R8 - R11 */ | |
117 | 12, 13, 14, 15, /* R12 - R15 */ | |
118 | -1, /* RA - not mapped */ | |
119 | XMM1_REGNUM - 1, XMM1_REGNUM, /* XMM0 ... */ | |
120 | XMM1_REGNUM + 1, XMM1_REGNUM + 2, | |
121 | XMM1_REGNUM + 3, XMM1_REGNUM + 4, | |
122 | XMM1_REGNUM + 5, XMM1_REGNUM + 6, | |
123 | XMM1_REGNUM + 7, XMM1_REGNUM + 8, | |
124 | XMM1_REGNUM + 9, XMM1_REGNUM + 10, | |
125 | XMM1_REGNUM + 11, XMM1_REGNUM + 12, | |
126 | XMM1_REGNUM + 13, XMM1_REGNUM + 14, /* ... XMM15 */ | |
127 | ST0_REGNUM + 0, ST0_REGNUM + 1, /* ST0 ... */ | |
128 | ST0_REGNUM + 2, ST0_REGNUM + 3, | |
129 | ST0_REGNUM + 4, ST0_REGNUM + 5, | |
130 | ST0_REGNUM + 6, ST0_REGNUM + 7 /* ... ST7 */ | |
131 | }; | |
132 | ||
133 | static int x86_64_dwarf2gdb_regno_map_length = | |
134 | sizeof (x86_64_dwarf2gdb_regno_map) / | |
135 | sizeof (x86_64_dwarf2gdb_regno_map[0]); | |
136 | ||
de220d0f ML |
137 | /* Number of all registers */ |
138 | #define X86_64_NUM_REGS (sizeof (x86_64_register_info_table) / \ | |
139 | sizeof (x86_64_register_info_table[0])) | |
140 | ||
141 | /* Number of general registers. */ | |
142 | #define X86_64_NUM_GREGS (22) | |
143 | ||
144 | int x86_64_num_regs = X86_64_NUM_REGS; | |
145 | int x86_64_num_gregs = X86_64_NUM_GREGS; | |
146 | ||
b6779aa2 AC |
147 | /* Did we already print a note about frame pointer? */ |
148 | int omit_fp_note_printed = 0; | |
149 | ||
53e95fcf JS |
150 | /* Number of bytes of storage in the actual machine representation for |
151 | register REGNO. */ | |
152 | int | |
153 | x86_64_register_raw_size (int regno) | |
154 | { | |
de220d0f | 155 | return x86_64_register_info_table[regno].size; |
53e95fcf JS |
156 | } |
157 | ||
158 | /* x86_64_register_byte_table[i] is the offset into the register file of the | |
159 | start of register number i. We initialize this from | |
de220d0f | 160 | x86_64_register_info_table. */ |
53e95fcf JS |
161 | int x86_64_register_byte_table[X86_64_NUM_REGS]; |
162 | ||
163 | /* Index within `registers' of the first byte of the space for register REGNO. */ | |
164 | int | |
165 | x86_64_register_byte (int regno) | |
166 | { | |
167 | return x86_64_register_byte_table[regno]; | |
168 | } | |
169 | ||
170 | /* Return the GDB type object for the "standard" data type of data in | |
171 | register N. */ | |
172 | static struct type * | |
173 | x86_64_register_virtual_type (int regno) | |
174 | { | |
de220d0f | 175 | return *x86_64_register_info_table[regno].type; |
53e95fcf JS |
176 | } |
177 | ||
53e95fcf JS |
178 | /* x86_64_register_convertible is true if register N's virtual format is |
179 | different from its raw format. Note that this definition assumes | |
180 | that the host supports IEEE 32-bit floats, since it doesn't say | |
181 | that SSE registers need conversion. Even if we can't find a | |
182 | counterexample, this is still sloppy. */ | |
183 | int | |
184 | x86_64_register_convertible (int regno) | |
185 | { | |
186 | return IS_FP_REGNUM (regno); | |
187 | } | |
188 | ||
189 | /* Convert data from raw format for register REGNUM in buffer FROM to | |
190 | virtual format with type TYPE in buffer TO. In principle both | |
191 | formats are identical except that the virtual format has two extra | |
192 | bytes appended that aren't used. We set these to zero. */ | |
193 | void | |
194 | x86_64_register_convert_to_virtual (int regnum, struct type *type, | |
195 | char *from, char *to) | |
196 | { | |
82dbc5f7 | 197 | char buf[12]; |
4657573b | 198 | |
82dbc5f7 AC |
199 | /* We only support floating-point values. */ |
200 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
201 | { | |
202 | warning ("Cannot convert floating-point register value " | |
203 | "to non-floating-point type."); | |
204 | memset (to, 0, TYPE_LENGTH (type)); | |
205 | return; | |
206 | } | |
207 | /* First add the necessary padding. */ | |
208 | memcpy (buf, from, FPU_REG_RAW_SIZE); | |
209 | memset (buf + FPU_REG_RAW_SIZE, 0, sizeof buf - FPU_REG_RAW_SIZE); | |
210 | /* Convert to TYPE. This should be a no-op, if TYPE is equivalent | |
211 | to the extended floating-point format used by the FPU. */ | |
ce0eebec AC |
212 | convert_typed_floating (to, type, buf, |
213 | x86_64_register_virtual_type (regnum)); | |
53e95fcf JS |
214 | } |
215 | ||
216 | /* Convert data from virtual format with type TYPE in buffer FROM to | |
217 | raw format for register REGNUM in buffer TO. Simply omit the two | |
218 | unused bytes. */ | |
219 | ||
220 | void | |
221 | x86_64_register_convert_to_raw (struct type *type, int regnum, | |
222 | char *from, char *to) | |
223 | { | |
ce0eebec | 224 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 12); |
82dbc5f7 | 225 | /* Simply omit the two unused bytes. */ |
53e95fcf JS |
226 | memcpy (to, from, FPU_REG_RAW_SIZE); |
227 | } | |
53e95fcf | 228 | |
0e04a514 ML |
229 | /* Dwarf-2 <-> GDB register numbers mapping. */ |
230 | int | |
231 | x86_64_dwarf2_reg_to_regnum (int dw_reg) | |
232 | { | |
233 | if (dw_reg < 0 || dw_reg > x86_64_dwarf2gdb_regno_map_length) | |
234 | { | |
235 | warning ("Dwarf-2 uses unmapped register #%d\n", dw_reg); | |
236 | return dw_reg; | |
237 | } | |
238 | ||
239 | return x86_64_dwarf2gdb_regno_map[dw_reg]; | |
240 | } | |
241 | ||
53e95fcf JS |
242 | /* This is the variable that is set with "set disassembly-flavour", and |
243 | its legitimate values. */ | |
244 | static const char att_flavour[] = "att"; | |
245 | static const char intel_flavour[] = "intel"; | |
246 | static const char *valid_flavours[] = { | |
247 | att_flavour, | |
248 | intel_flavour, | |
249 | NULL | |
250 | }; | |
251 | static const char *disassembly_flavour = att_flavour; | |
252 | ||
26abbdc4 MK |
253 | /* Push the return address (pointing to the call dummy) onto the stack |
254 | and return the new value for the stack pointer. */ | |
255 | ||
53e95fcf JS |
256 | static CORE_ADDR |
257 | x86_64_push_return_address (CORE_ADDR pc, CORE_ADDR sp) | |
258 | { | |
259 | char buf[8]; | |
260 | ||
261 | store_unsigned_integer (buf, 8, CALL_DUMMY_ADDRESS ()); | |
53e95fcf JS |
262 | write_memory (sp - 8, buf, 8); |
263 | return sp - 8; | |
264 | } | |
265 | ||
26abbdc4 | 266 | static void |
53e95fcf JS |
267 | x86_64_pop_frame (void) |
268 | { | |
269 | generic_pop_current_frame (cfi_pop_frame); | |
270 | } | |
271 | \f | |
272 | ||
273 | /* The returning of values is done according to the special algorithm. | |
274 | Some types are returned in registers an some (big structures) in memory. | |
275 | See ABI for details. | |
276 | */ | |
277 | ||
278 | #define MAX_CLASSES 4 | |
279 | ||
280 | enum x86_64_reg_class | |
281 | { | |
282 | X86_64_NO_CLASS, | |
283 | X86_64_INTEGER_CLASS, | |
284 | X86_64_INTEGERSI_CLASS, | |
285 | X86_64_SSE_CLASS, | |
286 | X86_64_SSESF_CLASS, | |
287 | X86_64_SSEDF_CLASS, | |
288 | X86_64_SSEUP_CLASS, | |
289 | X86_64_X87_CLASS, | |
290 | X86_64_X87UP_CLASS, | |
291 | X86_64_MEMORY_CLASS | |
292 | }; | |
293 | ||
294 | /* Return the union class of CLASS1 and CLASS2. | |
295 | See the x86-64 ABI for details. */ | |
296 | ||
297 | static enum x86_64_reg_class | |
298 | merge_classes (enum x86_64_reg_class class1, enum x86_64_reg_class class2) | |
299 | { | |
300 | /* Rule #1: If both classes are equal, this is the resulting class. */ | |
301 | if (class1 == class2) | |
302 | return class1; | |
303 | ||
26abbdc4 MK |
304 | /* Rule #2: If one of the classes is NO_CLASS, the resulting class |
305 | is the other class. */ | |
53e95fcf JS |
306 | if (class1 == X86_64_NO_CLASS) |
307 | return class2; | |
308 | if (class2 == X86_64_NO_CLASS) | |
309 | return class1; | |
310 | ||
311 | /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ | |
312 | if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) | |
313 | return X86_64_MEMORY_CLASS; | |
314 | ||
315 | /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ | |
316 | if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) | |
317 | || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) | |
318 | return X86_64_INTEGERSI_CLASS; | |
319 | if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS | |
320 | || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) | |
321 | return X86_64_INTEGER_CLASS; | |
322 | ||
323 | /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ | |
324 | if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS | |
325 | || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) | |
326 | return X86_64_MEMORY_CLASS; | |
327 | ||
328 | /* Rule #6: Otherwise class SSE is used. */ | |
329 | return X86_64_SSE_CLASS; | |
330 | } | |
331 | ||
26abbdc4 MK |
332 | /* Classify the argument type. CLASSES will be filled by the register |
333 | class used to pass each word of the operand. The number of words | |
334 | is returned. In case the parameter should be passed in memory, 0 | |
335 | is returned. As a special case for zero sized containers, | |
336 | classes[0] will be NO_CLASS and 1 is returned. | |
53e95fcf | 337 | |
26abbdc4 | 338 | See the x86-64 psABI for details. */ |
53e95fcf JS |
339 | |
340 | static int | |
341 | classify_argument (struct type *type, | |
342 | enum x86_64_reg_class classes[MAX_CLASSES], int bit_offset) | |
343 | { | |
344 | int bytes = TYPE_LENGTH (type); | |
345 | int words = (bytes + 8 - 1) / 8; | |
346 | ||
347 | switch (TYPE_CODE (type)) | |
348 | { | |
349 | case TYPE_CODE_ARRAY: | |
350 | case TYPE_CODE_STRUCT: | |
351 | case TYPE_CODE_UNION: | |
352 | { | |
353 | int i; | |
354 | enum x86_64_reg_class subclasses[MAX_CLASSES]; | |
355 | ||
356 | /* On x86-64 we pass structures larger than 16 bytes on the stack. */ | |
357 | if (bytes > 16) | |
358 | return 0; | |
359 | ||
360 | for (i = 0; i < words; i++) | |
361 | classes[i] = X86_64_NO_CLASS; | |
362 | ||
26abbdc4 MK |
363 | /* Zero sized arrays or structures are NO_CLASS. We return 0 |
364 | to signalize memory class, so handle it as special case. */ | |
53e95fcf JS |
365 | if (!words) |
366 | { | |
367 | classes[0] = X86_64_NO_CLASS; | |
368 | return 1; | |
369 | } | |
370 | switch (TYPE_CODE (type)) | |
371 | { | |
372 | case TYPE_CODE_STRUCT: | |
373 | { | |
374 | int j; | |
0004e5a2 | 375 | for (j = 0; j < TYPE_NFIELDS (type); ++j) |
53e95fcf | 376 | { |
0004e5a2 | 377 | int num = classify_argument (TYPE_FIELDS (type)[j].type, |
53e95fcf | 378 | subclasses, |
8dda9770 ML |
379 | (TYPE_FIELDS (type)[j].loc. |
380 | bitpos + bit_offset) % 256); | |
53e95fcf JS |
381 | if (!num) |
382 | return 0; | |
383 | for (i = 0; i < num; i++) | |
384 | { | |
385 | int pos = | |
8dda9770 ML |
386 | (TYPE_FIELDS (type)[j].loc.bitpos + |
387 | bit_offset) / 8 / 8; | |
53e95fcf JS |
388 | classes[i + pos] = |
389 | merge_classes (subclasses[i], classes[i + pos]); | |
390 | } | |
391 | } | |
392 | } | |
393 | break; | |
394 | case TYPE_CODE_ARRAY: | |
395 | { | |
396 | int num; | |
397 | ||
0004e5a2 | 398 | num = classify_argument (TYPE_TARGET_TYPE (type), |
53e95fcf JS |
399 | subclasses, bit_offset); |
400 | if (!num) | |
401 | return 0; | |
402 | ||
403 | /* The partial classes are now full classes. */ | |
404 | if (subclasses[0] == X86_64_SSESF_CLASS && bytes != 4) | |
405 | subclasses[0] = X86_64_SSE_CLASS; | |
406 | if (subclasses[0] == X86_64_INTEGERSI_CLASS && bytes != 4) | |
407 | subclasses[0] = X86_64_INTEGER_CLASS; | |
408 | ||
409 | for (i = 0; i < words; i++) | |
410 | classes[i] = subclasses[i % num]; | |
411 | } | |
412 | break; | |
413 | case TYPE_CODE_UNION: | |
414 | { | |
415 | int j; | |
416 | { | |
0004e5a2 | 417 | for (j = 0; j < TYPE_NFIELDS (type); ++j) |
53e95fcf JS |
418 | { |
419 | int num; | |
0004e5a2 | 420 | num = classify_argument (TYPE_FIELDS (type)[j].type, |
53e95fcf JS |
421 | subclasses, bit_offset); |
422 | if (!num) | |
423 | return 0; | |
424 | for (i = 0; i < num; i++) | |
425 | classes[i] = merge_classes (subclasses[i], classes[i]); | |
426 | } | |
427 | } | |
428 | } | |
429 | break; | |
4657573b ML |
430 | default: |
431 | break; | |
53e95fcf JS |
432 | } |
433 | /* Final merger cleanup. */ | |
434 | for (i = 0; i < words; i++) | |
435 | { | |
436 | /* If one class is MEMORY, everything should be passed in | |
437 | memory. */ | |
438 | if (classes[i] == X86_64_MEMORY_CLASS) | |
439 | return 0; | |
440 | ||
441 | /* The X86_64_SSEUP_CLASS should be always preceeded by | |
442 | X86_64_SSE_CLASS. */ | |
443 | if (classes[i] == X86_64_SSEUP_CLASS | |
444 | && (i == 0 || classes[i - 1] != X86_64_SSE_CLASS)) | |
445 | classes[i] = X86_64_SSE_CLASS; | |
446 | ||
26abbdc4 | 447 | /* X86_64_X87UP_CLASS should be preceeded by X86_64_X87_CLASS. */ |
53e95fcf JS |
448 | if (classes[i] == X86_64_X87UP_CLASS |
449 | && (i == 0 || classes[i - 1] != X86_64_X87_CLASS)) | |
450 | classes[i] = X86_64_SSE_CLASS; | |
451 | } | |
452 | return words; | |
453 | } | |
454 | break; | |
455 | case TYPE_CODE_FLT: | |
456 | switch (bytes) | |
457 | { | |
458 | case 4: | |
459 | if (!(bit_offset % 64)) | |
460 | classes[0] = X86_64_SSESF_CLASS; | |
461 | else | |
462 | classes[0] = X86_64_SSE_CLASS; | |
463 | return 1; | |
464 | case 8: | |
465 | classes[0] = X86_64_SSEDF_CLASS; | |
466 | return 1; | |
467 | case 16: | |
468 | classes[0] = X86_64_X87_CLASS; | |
469 | classes[1] = X86_64_X87UP_CLASS; | |
470 | return 2; | |
471 | } | |
472 | break; | |
473 | case TYPE_CODE_INT: | |
474 | case TYPE_CODE_PTR: | |
475 | switch (bytes) | |
476 | { | |
477 | case 1: | |
478 | case 2: | |
479 | case 4: | |
480 | case 8: | |
481 | if (bytes * 8 + bit_offset <= 32) | |
482 | classes[0] = X86_64_INTEGERSI_CLASS; | |
483 | else | |
484 | classes[0] = X86_64_INTEGER_CLASS; | |
485 | return 1; | |
486 | case 16: | |
487 | classes[0] = classes[1] = X86_64_INTEGER_CLASS; | |
488 | return 2; | |
489 | default: | |
490 | break; | |
491 | } | |
492 | case TYPE_CODE_VOID: | |
493 | return 0; | |
8dda9770 | 494 | default: /* Avoid warning. */ |
4657573b | 495 | break; |
53e95fcf | 496 | } |
ce0eebec AC |
497 | internal_error (__FILE__, __LINE__, |
498 | "classify_argument: unknown argument type"); | |
53e95fcf JS |
499 | } |
500 | ||
26abbdc4 MK |
501 | /* Examine the argument and set *INT_NREGS and *SSE_NREGS to the |
502 | number of registers required based on the information passed in | |
503 | CLASSES. Return 0 if parameter should be passed in memory. */ | |
53e95fcf JS |
504 | |
505 | static int | |
506 | examine_argument (enum x86_64_reg_class classes[MAX_CLASSES], | |
507 | int n, int *int_nregs, int *sse_nregs) | |
508 | { | |
509 | *int_nregs = 0; | |
510 | *sse_nregs = 0; | |
511 | if (!n) | |
512 | return 0; | |
513 | for (n--; n >= 0; n--) | |
514 | switch (classes[n]) | |
515 | { | |
516 | case X86_64_INTEGER_CLASS: | |
517 | case X86_64_INTEGERSI_CLASS: | |
518 | (*int_nregs)++; | |
519 | break; | |
520 | case X86_64_SSE_CLASS: | |
521 | case X86_64_SSESF_CLASS: | |
522 | case X86_64_SSEDF_CLASS: | |
523 | (*sse_nregs)++; | |
524 | break; | |
525 | case X86_64_NO_CLASS: | |
526 | case X86_64_SSEUP_CLASS: | |
527 | case X86_64_X87_CLASS: | |
528 | case X86_64_X87UP_CLASS: | |
529 | break; | |
530 | case X86_64_MEMORY_CLASS: | |
ce0eebec AC |
531 | internal_error (__FILE__, __LINE__, |
532 | "examine_argument: unexpected memory class"); | |
53e95fcf JS |
533 | } |
534 | return 1; | |
535 | } | |
536 | ||
537 | #define RET_INT_REGS 2 | |
538 | #define RET_SSE_REGS 2 | |
539 | ||
540 | /* Check if the structure in value_type is returned in registers or in | |
26abbdc4 MK |
541 | memory. If this function returns 1, GDB will call |
542 | STORE_STRUCT_RETURN and EXTRACT_STRUCT_VALUE_ADDRESS else | |
543 | STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE will be used. */ | |
53e95fcf JS |
544 | int |
545 | x86_64_use_struct_convention (int gcc_p, struct type *value_type) | |
546 | { | |
547 | enum x86_64_reg_class class[MAX_CLASSES]; | |
548 | int n = classify_argument (value_type, class, 0); | |
549 | int needed_intregs; | |
550 | int needed_sseregs; | |
551 | ||
552 | return (!n || | |
553 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
554 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS); | |
555 | } | |
556 | ||
53e95fcf JS |
557 | /* Extract from an array REGBUF containing the (raw) register state, a |
558 | function return value of TYPE, and copy that, in virtual format, | |
559 | into VALBUF. */ | |
560 | ||
561 | void | |
48037ead ML |
562 | x86_64_extract_return_value (struct type *type, struct regcache *regcache, |
563 | void *valbuf) | |
53e95fcf JS |
564 | { |
565 | enum x86_64_reg_class class[MAX_CLASSES]; | |
566 | int n = classify_argument (type, class, 0); | |
567 | int needed_intregs; | |
568 | int needed_sseregs; | |
569 | int intreg = 0; | |
570 | int ssereg = 0; | |
571 | int offset = 0; | |
572 | int ret_int_r[RET_INT_REGS] = { RAX_REGNUM, RDX_REGNUM }; | |
573 | int ret_sse_r[RET_SSE_REGS] = { XMM0_REGNUM, XMM1_REGNUM }; | |
574 | ||
575 | if (!n || | |
576 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
577 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS) | |
578 | { /* memory class */ | |
579 | CORE_ADDR addr; | |
48037ead | 580 | regcache_cooked_read (regcache, RAX_REGNUM, &addr); |
53e95fcf JS |
581 | read_memory (addr, valbuf, TYPE_LENGTH (type)); |
582 | return; | |
583 | } | |
584 | else | |
585 | { | |
586 | int i; | |
587 | for (i = 0; i < n; i++) | |
588 | { | |
589 | switch (class[i]) | |
590 | { | |
591 | case X86_64_NO_CLASS: | |
592 | break; | |
593 | case X86_64_INTEGER_CLASS: | |
48037ead ML |
594 | regcache_cooked_read (regcache, ret_int_r[(intreg + 1) / 2], |
595 | (char *) valbuf + offset); | |
53e95fcf JS |
596 | offset += 8; |
597 | intreg += 2; | |
598 | break; | |
599 | case X86_64_INTEGERSI_CLASS: | |
48037ead ML |
600 | regcache_cooked_read_part (regcache, ret_int_r[intreg / 2], |
601 | 0, 4, (char *) valbuf + offset); | |
53e95fcf JS |
602 | offset += 8; |
603 | intreg++; | |
604 | break; | |
605 | case X86_64_SSEDF_CLASS: | |
606 | case X86_64_SSESF_CLASS: | |
607 | case X86_64_SSE_CLASS: | |
48037ead ML |
608 | regcache_cooked_read_part (regcache, |
609 | ret_sse_r[(ssereg + 1) / 2], 0, 8, | |
610 | (char *) valbuf + offset); | |
53e95fcf JS |
611 | offset += 8; |
612 | ssereg += 2; | |
613 | break; | |
614 | case X86_64_SSEUP_CLASS: | |
48037ead ML |
615 | regcache_cooked_read_part (regcache, ret_sse_r[ssereg / 2], |
616 | 0, 8, (char *) valbuf + offset); | |
53e95fcf JS |
617 | offset += 8; |
618 | ssereg++; | |
619 | break; | |
620 | case X86_64_X87_CLASS: | |
48037ead ML |
621 | regcache_cooked_read_part (regcache, FP0_REGNUM, |
622 | 0, 8, (char *) valbuf + offset); | |
53e95fcf JS |
623 | offset += 8; |
624 | break; | |
625 | case X86_64_X87UP_CLASS: | |
48037ead ML |
626 | regcache_cooked_read_part (regcache, FP0_REGNUM, |
627 | 8, 2, (char *) valbuf + offset); | |
53e95fcf JS |
628 | offset += 8; |
629 | break; | |
630 | case X86_64_MEMORY_CLASS: | |
631 | default: | |
632 | internal_error (__FILE__, __LINE__, | |
633 | "Unexpected argument class"); | |
634 | } | |
635 | } | |
636 | } | |
637 | } | |
638 | ||
53e95fcf JS |
639 | static void |
640 | x86_64_frame_init_saved_regs (struct frame_info *fi) | |
641 | { | |
26abbdc4 | 642 | /* Do nothing. Everything is handled by the stack unwinding code. */ |
53e95fcf JS |
643 | } |
644 | ||
645 | #define INT_REGS 6 | |
646 | #define SSE_REGS 16 | |
647 | ||
53e95fcf | 648 | CORE_ADDR |
d45fc520 | 649 | x86_64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
53e95fcf JS |
650 | int struct_return, CORE_ADDR struct_addr) |
651 | { | |
652 | int intreg = 0; | |
653 | int ssereg = 0; | |
654 | int i; | |
ce0eebec | 655 | static int int_parameter_registers[INT_REGS] = { |
de220d0f ML |
656 | 5 /* RDI */ , 4 /* RSI */ , |
657 | 3 /* RDX */ , 2 /* RCX */ , | |
91fd20f7 | 658 | 8 /* R8 */ , 9 /* R9 */ |
ce0eebec | 659 | }; |
53e95fcf | 660 | /* XMM0 - XMM15 */ |
ce0eebec | 661 | static int sse_parameter_registers[SSE_REGS] = { |
de220d0f ML |
662 | XMM1_REGNUM - 1, XMM1_REGNUM, XMM1_REGNUM + 1, XMM1_REGNUM + 2, |
663 | XMM1_REGNUM + 3, XMM1_REGNUM + 4, XMM1_REGNUM + 5, XMM1_REGNUM + 6, | |
664 | XMM1_REGNUM + 7, XMM1_REGNUM + 8, XMM1_REGNUM + 9, XMM1_REGNUM + 10, | |
665 | XMM1_REGNUM + 11, XMM1_REGNUM + 12, XMM1_REGNUM + 13, XMM1_REGNUM + 14 | |
ce0eebec AC |
666 | }; |
667 | int stack_values_count = 0; | |
82dbc5f7 | 668 | int *stack_values; |
e9f30c21 | 669 | stack_values = alloca (nargs * sizeof (int)); |
53e95fcf JS |
670 | for (i = 0; i < nargs; i++) |
671 | { | |
672 | enum x86_64_reg_class class[MAX_CLASSES]; | |
673 | int n = classify_argument (args[i]->type, class, 0); | |
674 | int needed_intregs; | |
675 | int needed_sseregs; | |
676 | ||
677 | if (!n || | |
678 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) | |
82dbc5f7 AC |
679 | || intreg / 2 + needed_intregs > INT_REGS |
680 | || ssereg / 2 + needed_sseregs > SSE_REGS) | |
ce0eebec AC |
681 | { /* memory class */ |
682 | stack_values[stack_values_count++] = i; | |
53e95fcf JS |
683 | } |
684 | else | |
685 | { | |
686 | int j; | |
687 | for (j = 0; j < n; j++) | |
688 | { | |
689 | int offset = 0; | |
690 | switch (class[j]) | |
691 | { | |
692 | case X86_64_NO_CLASS: | |
693 | break; | |
694 | case X86_64_INTEGER_CLASS: | |
4caf0990 AC |
695 | deprecated_write_register_gen (int_parameter_registers |
696 | [(intreg + 1) / 2], | |
697 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
698 | offset += 8; |
699 | intreg += 2; | |
700 | break; | |
701 | case X86_64_INTEGERSI_CLASS: | |
4caf0990 AC |
702 | deprecated_write_register_gen (int_parameter_registers[intreg / 2], |
703 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
704 | offset += 8; |
705 | intreg++; | |
706 | break; | |
707 | case X86_64_SSEDF_CLASS: | |
708 | case X86_64_SSESF_CLASS: | |
709 | case X86_64_SSE_CLASS: | |
4caf0990 AC |
710 | deprecated_write_register_gen (sse_parameter_registers |
711 | [(ssereg + 1) / 2], | |
712 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
713 | offset += 8; |
714 | ssereg += 2; | |
715 | break; | |
716 | case X86_64_SSEUP_CLASS: | |
4caf0990 AC |
717 | deprecated_write_register_gen (sse_parameter_registers[ssereg / 2], |
718 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
719 | offset += 8; |
720 | ssereg++; | |
721 | break; | |
722 | case X86_64_X87_CLASS: | |
53e95fcf | 723 | case X86_64_MEMORY_CLASS: |
ce0eebec | 724 | stack_values[stack_values_count++] = i; |
82dbc5f7 AC |
725 | break; |
726 | case X86_64_X87UP_CLASS: | |
53e95fcf JS |
727 | break; |
728 | default: | |
729 | internal_error (__FILE__, __LINE__, | |
730 | "Unexpected argument class"); | |
731 | } | |
732 | intreg += intreg % 2; | |
733 | ssereg += ssereg % 2; | |
734 | } | |
735 | } | |
736 | } | |
82dbc5f7 AC |
737 | while (--stack_values_count >= 0) |
738 | { | |
e9f30c21 | 739 | struct value *arg = args[stack_values[stack_values_count]]; |
82dbc5f7 AC |
740 | int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg)); |
741 | len += 7; | |
742 | len -= len % 8; | |
743 | sp -= len; | |
744 | write_memory (sp, VALUE_CONTENTS_ALL (arg), len); | |
745 | } | |
53e95fcf JS |
746 | return sp; |
747 | } | |
748 | ||
749 | /* Write into the appropriate registers a function return value stored | |
750 | in VALBUF of type TYPE, given in virtual format. */ | |
751 | void | |
48037ead ML |
752 | x86_64_store_return_value (struct type *type, struct regcache *regcache, |
753 | const void *valbuf) | |
53e95fcf JS |
754 | { |
755 | int len = TYPE_LENGTH (type); | |
756 | ||
757 | if (TYPE_CODE_FLT == TYPE_CODE (type)) | |
758 | { | |
759 | /* Floating-point return values can be found in %st(0). */ | |
760 | if (len == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT | |
761 | && TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext) | |
762 | { | |
763 | /* Copy straight over. */ | |
48037ead | 764 | regcache_cooked_write (regcache, FP0_REGNUM, valbuf); |
53e95fcf JS |
765 | } |
766 | else | |
767 | { | |
768 | char buf[FPU_REG_RAW_SIZE]; | |
769 | DOUBLEST val; | |
770 | ||
771 | /* Convert the value found in VALBUF to the extended | |
772 | floating point format used by the FPU. This is probably | |
773 | not exactly how it would happen on the target itself, but | |
774 | it is the best we can do. */ | |
775 | val = extract_floating (valbuf, TYPE_LENGTH (type)); | |
776 | floatformat_from_doublest (&floatformat_i387_ext, &val, buf); | |
48037ead ML |
777 | regcache_cooked_write_part (regcache, FP0_REGNUM, |
778 | 0, FPU_REG_RAW_SIZE, buf); | |
53e95fcf JS |
779 | } |
780 | } | |
781 | else | |
782 | { | |
783 | int low_size = REGISTER_RAW_SIZE (0); | |
784 | int high_size = REGISTER_RAW_SIZE (1); | |
785 | ||
786 | if (len <= low_size) | |
48037ead | 787 | regcache_cooked_write_part (regcache, 0, 0, len, valbuf); |
53e95fcf JS |
788 | else if (len <= (low_size + high_size)) |
789 | { | |
48037ead ML |
790 | regcache_cooked_write_part (regcache, 0, 0, low_size, valbuf); |
791 | regcache_cooked_write_part (regcache, 1, 0, | |
792 | len - low_size, | |
793 | (const char *) valbuf + low_size); | |
53e95fcf JS |
794 | } |
795 | else | |
796 | internal_error (__FILE__, __LINE__, | |
797 | "Cannot store return value of %d bytes long.", len); | |
798 | } | |
799 | } | |
800 | \f | |
801 | ||
1cf877ad ML |
802 | const char * |
803 | x86_64_register_name (int reg_nr) | |
53e95fcf | 804 | { |
de220d0f | 805 | if (reg_nr < 0 || reg_nr >= X86_64_NUM_REGS) |
53e95fcf | 806 | return NULL; |
de220d0f | 807 | return x86_64_register_info_table[reg_nr].name; |
53e95fcf | 808 | } |
8dda9770 ML |
809 | |
810 | int | |
1cf877ad | 811 | x86_64_register_number (const char *name) |
8dda9770 ML |
812 | { |
813 | int reg_nr; | |
814 | ||
815 | for (reg_nr = 0; reg_nr < X86_64_NUM_REGS; reg_nr++) | |
816 | if (strcmp (name, x86_64_register_info_table[reg_nr].name) == 0) | |
817 | return reg_nr; | |
818 | return -1; | |
819 | } | |
53e95fcf JS |
820 | \f |
821 | ||
822 | ||
823 | /* We have two flavours of disassembly. The machinery on this page | |
824 | deals with switching between those. */ | |
825 | ||
826 | static int | |
827 | gdb_print_insn_x86_64 (bfd_vma memaddr, disassemble_info * info) | |
828 | { | |
829 | if (disassembly_flavour == att_flavour) | |
830 | return print_insn_i386_att (memaddr, info); | |
831 | else if (disassembly_flavour == intel_flavour) | |
832 | return print_insn_i386_intel (memaddr, info); | |
833 | /* Never reached -- disassembly_flavour is always either att_flavour | |
834 | or intel_flavour. */ | |
835 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); | |
836 | } | |
837 | \f | |
838 | ||
839 | /* Store the address of the place in which to copy the structure the | |
840 | subroutine will return. This is called from call_function. */ | |
841 | void | |
842 | x86_64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) | |
843 | { | |
844 | write_register (RDI_REGNUM, addr); | |
845 | } | |
846 | ||
847 | int | |
848 | x86_64_frameless_function_invocation (struct frame_info *frame) | |
849 | { | |
850 | return 0; | |
851 | } | |
852 | ||
e76e1718 ML |
853 | /* If a function with debugging information and known beginning |
854 | is detected, we will return pc of the next line in the source | |
855 | code. With this approach we effectively skip the prolog. */ | |
856 | ||
857 | #define PROLOG_BUFSIZE 4 | |
53e95fcf JS |
858 | CORE_ADDR |
859 | x86_64_skip_prologue (CORE_ADDR pc) | |
860 | { | |
482a4d06 | 861 | int i; |
e76e1718 ML |
862 | struct symtab_and_line v_sal; |
863 | struct symbol *v_function; | |
482a4d06 | 864 | CORE_ADDR endaddr; |
26abbdc4 | 865 | unsigned char prolog_buf[PROLOG_BUFSIZE]; |
e76e1718 | 866 | |
26abbdc4 MK |
867 | /* We will handle only functions starting with: */ |
868 | static unsigned char prolog_expect[PROLOG_BUFSIZE] = | |
869 | { | |
870 | 0x55, /* pushq %rbp */ | |
871 | 0x48, 0x89, 0xe5 /* movq %rsp, %rbp */ | |
872 | }; | |
e76e1718 ML |
873 | |
874 | read_memory (pc, (char *) prolog_buf, PROLOG_BUFSIZE); | |
875 | ||
26abbdc4 | 876 | /* First check, whether pc points to pushq %rbp, movq %rsp, %rbp. */ |
b1ab997b | 877 | for (i = 0; i < PROLOG_BUFSIZE; i++) |
b6779aa2 | 878 | if (prolog_expect[i] != prolog_buf[i]) |
26abbdc4 | 879 | return pc; /* ... no, it doesn't. Nothing to skip. */ |
b1ab997b | 880 | |
26abbdc4 | 881 | /* OK, we have found the prologue and want PC of the first |
b1ab997b ML |
882 | non-prologue instruction. */ |
883 | pc += PROLOG_BUFSIZE; | |
e76e1718 ML |
884 | |
885 | v_function = find_pc_function (pc); | |
886 | v_sal = find_pc_line (pc, 0); | |
887 | ||
26abbdc4 MK |
888 | /* If pc doesn't point to a function with debuginfo, some of the |
889 | following may be NULL. */ | |
e76e1718 ML |
890 | if (!v_function || !v_function->ginfo.value.block || !v_sal.symtab) |
891 | return pc; | |
892 | ||
8da065d5 | 893 | endaddr = BLOCK_END (SYMBOL_BLOCK_VALUE (v_function)); |
e76e1718 ML |
894 | |
895 | for (i = 0; i < v_sal.symtab->linetable->nitems; i++) | |
482a4d06 | 896 | if (v_sal.symtab->linetable->item[i].pc >= pc |
e76e1718 ML |
897 | && v_sal.symtab->linetable->item[i].pc < endaddr) |
898 | { | |
899 | pc = v_sal.symtab->linetable->item[i].pc; | |
e76e1718 ML |
900 | break; |
901 | } | |
902 | ||
53e95fcf JS |
903 | return pc; |
904 | } | |
905 | ||
906 | /* Sequence of bytes for breakpoint instruction. */ | |
ab91194c | 907 | static const unsigned char * |
b64bbf8c | 908 | x86_64_breakpoint_from_pc (CORE_ADDR *pc, int *lenptr) |
53e95fcf JS |
909 | { |
910 | static unsigned char breakpoint[] = { 0xcc }; | |
911 | *lenptr = 1; | |
912 | return breakpoint; | |
913 | } | |
914 | ||
2213a65d | 915 | void |
0c1a73d6 | 916 | x86_64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
53e95fcf | 917 | { |
0c1a73d6 | 918 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
de220d0f | 919 | int i, sum; |
53e95fcf | 920 | |
b83b026c | 921 | /* The x86-64 has 16 SSE registers. */ |
0c1a73d6 | 922 | tdep->num_xmm_regs = 16; |
53e95fcf | 923 | |
0c1a73d6 | 924 | /* This is what all the fuss is about. */ |
53e95fcf JS |
925 | set_gdbarch_long_bit (gdbarch, 64); |
926 | set_gdbarch_long_long_bit (gdbarch, 64); | |
927 | set_gdbarch_ptr_bit (gdbarch, 64); | |
928 | ||
b83b026c MK |
929 | /* In contrast to the i386, on the x86-64 a `long double' actually |
930 | takes up 128 bits, even though it's still based on the i387 | |
931 | extended floating-point format which has only 80 significant bits. */ | |
932 | set_gdbarch_long_double_bit (gdbarch, 128); | |
933 | ||
53e95fcf | 934 | set_gdbarch_num_regs (gdbarch, X86_64_NUM_REGS); |
b83b026c MK |
935 | |
936 | /* Register numbers of various important registers. */ | |
937 | set_gdbarch_sp_regnum (gdbarch, 7); /* %rsp */ | |
938 | set_gdbarch_fp_regnum (gdbarch, 6); /* %rbp */ | |
939 | set_gdbarch_pc_regnum (gdbarch, 16); /* %rip */ | |
940 | set_gdbarch_ps_regnum (gdbarch, 17); /* %eflags */ | |
941 | set_gdbarch_fp0_regnum (gdbarch, X86_64_NUM_GREGS); /* %st(0) */ | |
942 | ||
943 | /* The "default" register numbering scheme for the x86-64 is | |
944 | referred to as the "DWARF register number mapping" in the psABI. | |
945 | The preferred debugging format for all known x86-64 targets is | |
946 | actually DWARF2, and GCC doesn't seem to support DWARF (that is | |
947 | DWARF-1), but we provide the same mapping just in case. This | |
948 | mapping is also used for stabs, which GCC does support. */ | |
949 | set_gdbarch_stab_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
950 | set_gdbarch_dwarf_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
951 | set_gdbarch_dwarf2_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
952 | ||
953 | /* We don't override SDB_REG_RO_REGNUM, sice COFF doesn't seem to be | |
954 | in use on any of the supported x86-64 targets. */ | |
955 | ||
1cf877ad | 956 | set_gdbarch_register_name (gdbarch, x86_64_register_name); |
53e95fcf | 957 | set_gdbarch_register_size (gdbarch, 8); |
de220d0f | 958 | |
0c1a73d6 MK |
959 | /* Total amount of space needed to store our copies of the machine's |
960 | register (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + | |
961 | SIZEOF_SSE_REGS) */ | |
de220d0f ML |
962 | for (i = 0, sum = 0; i < X86_64_NUM_REGS; i++) |
963 | sum += x86_64_register_info_table[i].size; | |
964 | set_gdbarch_register_bytes (gdbarch, sum); | |
53e95fcf | 965 | |
b83b026c MK |
966 | set_gdbarch_register_raw_size (gdbarch, x86_64_register_raw_size); |
967 | set_gdbarch_register_byte (gdbarch, x86_64_register_byte); | |
53e95fcf JS |
968 | set_gdbarch_register_virtual_type (gdbarch, x86_64_register_virtual_type); |
969 | ||
970 | set_gdbarch_register_convertible (gdbarch, x86_64_register_convertible); | |
971 | set_gdbarch_register_convert_to_virtual (gdbarch, | |
972 | x86_64_register_convert_to_virtual); | |
973 | set_gdbarch_register_convert_to_raw (gdbarch, | |
974 | x86_64_register_convert_to_raw); | |
975 | ||
b83b026c MK |
976 | /* Getting saved registers is handled by unwind information. */ |
977 | set_gdbarch_get_saved_register (gdbarch, cfi_get_saved_register); | |
53e95fcf | 978 | |
b83b026c | 979 | /* FIXME: kettenis/20021026: Should we set parm_boundary to 64 here? */ |
53e95fcf | 980 | set_gdbarch_read_fp (gdbarch, cfi_read_fp); |
53e95fcf | 981 | |
48037ead ML |
982 | set_gdbarch_extract_return_value (gdbarch, x86_64_extract_return_value); |
983 | ||
b83b026c MK |
984 | set_gdbarch_push_arguments (gdbarch, x86_64_push_arguments); |
985 | set_gdbarch_push_return_address (gdbarch, x86_64_push_return_address); | |
53e95fcf | 986 | set_gdbarch_pop_frame (gdbarch, x86_64_pop_frame); |
b83b026c | 987 | set_gdbarch_store_struct_return (gdbarch, x86_64_store_struct_return); |
48037ead | 988 | set_gdbarch_store_return_value (gdbarch, x86_64_store_return_value); |
b83b026c MK |
989 | /* Override, since this is handled by x86_64_extract_return_value. */ |
990 | set_gdbarch_extract_struct_value_address (gdbarch, NULL); | |
991 | set_gdbarch_use_struct_convention (gdbarch, x86_64_use_struct_convention); | |
53e95fcf JS |
992 | |
993 | set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); | |
b83b026c | 994 | set_gdbarch_skip_prologue (gdbarch, x86_64_skip_prologue); |
53e95fcf | 995 | |
b83b026c MK |
996 | set_gdbarch_frame_chain (gdbarch, x86_64_linux_frame_chain); |
997 | set_gdbarch_frameless_function_invocation (gdbarch, | |
998 | x86_64_frameless_function_invocation); | |
b83b026c MK |
999 | /* FIXME: kettenis/20021026: These two are GNU/Linux-specific and |
1000 | should be moved elsewhere. */ | |
1001 | set_gdbarch_frame_saved_pc (gdbarch, x86_64_linux_frame_saved_pc); | |
1002 | set_gdbarch_saved_pc_after_call (gdbarch, x86_64_linux_saved_pc_after_call); | |
53e95fcf | 1003 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); |
b83b026c MK |
1004 | /* FIXME: kettenis/20021026: This one is GNU/Linux-specific too. */ |
1005 | set_gdbarch_pc_in_sigtramp (gdbarch, x86_64_linux_in_sigtramp); | |
53e95fcf | 1006 | |
2213a65d MK |
1007 | set_gdbarch_num_pseudo_regs (gdbarch, 0); |
1008 | ||
b83b026c MK |
1009 | /* Build call frame information (CFI) from DWARF2 frame debug info. */ |
1010 | set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info); | |
53e95fcf | 1011 | |
b83b026c | 1012 | /* Initialization of per-frame CFI. */ |
e3033f15 | 1013 | set_gdbarch_init_extra_frame_info (gdbarch, cfi_init_extra_frame_info); |
53e95fcf | 1014 | |
b83b026c | 1015 | /* Frame PC initialization is handled by using CFI. */ |
a5afb99f | 1016 | set_gdbarch_deprecated_init_frame_pc (gdbarch, x86_64_init_frame_pc); |
53e95fcf | 1017 | |
b83b026c MK |
1018 | /* Cons up virtual frame pointer for trace. */ |
1019 | set_gdbarch_virtual_frame_pointer (gdbarch, cfi_virtual_frame_pointer); | |
53e95fcf | 1020 | |
b83b026c MK |
1021 | /* FIXME: kettenis/20021026: This is ELF-specific. Fine for now, |
1022 | since all supported x86-64 targets are ELF, but that might change | |
1023 | in the future. */ | |
8a8ab2b9 | 1024 | set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section); |
0c1a73d6 MK |
1025 | } |
1026 | ||
53e95fcf JS |
1027 | void |
1028 | _initialize_x86_64_tdep (void) | |
1029 | { | |
53e95fcf JS |
1030 | /* Initialize the table saying where each register starts in the |
1031 | register file. */ | |
1032 | { | |
1033 | int i, offset; | |
1034 | ||
1035 | offset = 0; | |
1036 | for (i = 0; i < X86_64_NUM_REGS; i++) | |
1037 | { | |
1038 | x86_64_register_byte_table[i] = offset; | |
de220d0f | 1039 | offset += x86_64_register_info_table[i].size; |
53e95fcf JS |
1040 | } |
1041 | } | |
53e95fcf | 1042 | } |