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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" |
fe898f56 | 34 | #include "block.h" |
53e95fcf | 35 | |
53e95fcf JS |
36 | /* Register numbers of various important registers. */ |
37 | #define RAX_REGNUM 0 | |
de220d0f | 38 | #define RDX_REGNUM 3 |
53e95fcf JS |
39 | #define RDI_REGNUM 5 |
40 | #define EFLAGS_REGNUM 17 | |
0e04a514 | 41 | #define ST0_REGNUM 22 |
de220d0f ML |
42 | #define XMM1_REGNUM 39 |
43 | ||
44 | struct register_info | |
45 | { | |
46 | int size; | |
47 | char *name; | |
48 | struct type **type; | |
49 | }; | |
53e95fcf JS |
50 | |
51 | /* x86_64_register_raw_size_table[i] is the number of bytes of storage in | |
52 | GDB's register array occupied by register i. */ | |
de220d0f | 53 | static struct register_info x86_64_register_info_table[] = { |
91fd20f7 ML |
54 | /* 0 */ {8, "rax", &builtin_type_int64}, |
55 | /* 1 */ {8, "rbx", &builtin_type_int64}, | |
56 | /* 2 */ {8, "rcx", &builtin_type_int64}, | |
57 | /* 3 */ {8, "rdx", &builtin_type_int64}, | |
58 | /* 4 */ {8, "rsi", &builtin_type_int64}, | |
59 | /* 5 */ {8, "rdi", &builtin_type_int64}, | |
60 | /* 6 */ {8, "rbp", &builtin_type_void_func_ptr}, | |
61 | /* 7 */ {8, "rsp", &builtin_type_void_func_ptr}, | |
62 | /* 8 */ {8, "r8", &builtin_type_int64}, | |
63 | /* 9 */ {8, "r9", &builtin_type_int64}, | |
64 | /* 10 */ {8, "r10", &builtin_type_int64}, | |
65 | /* 11 */ {8, "r11", &builtin_type_int64}, | |
66 | /* 12 */ {8, "r12", &builtin_type_int64}, | |
67 | /* 13 */ {8, "r13", &builtin_type_int64}, | |
68 | /* 14 */ {8, "r14", &builtin_type_int64}, | |
69 | /* 15 */ {8, "r15", &builtin_type_int64}, | |
70 | /* 16 */ {8, "rip", &builtin_type_void_func_ptr}, | |
71 | /* 17 */ {4, "eflags", &builtin_type_int32}, | |
72 | /* 18 */ {4, "ds", &builtin_type_int32}, | |
73 | /* 19 */ {4, "es", &builtin_type_int32}, | |
74 | /* 20 */ {4, "fs", &builtin_type_int32}, | |
75 | /* 21 */ {4, "gs", &builtin_type_int32}, | |
76 | /* 22 */ {10, "st0", &builtin_type_i387_ext}, | |
77 | /* 23 */ {10, "st1", &builtin_type_i387_ext}, | |
78 | /* 24 */ {10, "st2", &builtin_type_i387_ext}, | |
79 | /* 25 */ {10, "st3", &builtin_type_i387_ext}, | |
80 | /* 26 */ {10, "st4", &builtin_type_i387_ext}, | |
81 | /* 27 */ {10, "st5", &builtin_type_i387_ext}, | |
82 | /* 28 */ {10, "st6", &builtin_type_i387_ext}, | |
83 | /* 29 */ {10, "st7", &builtin_type_i387_ext}, | |
84 | /* 30 */ {4, "fctrl", &builtin_type_int32}, | |
85 | /* 31 */ {4, "fstat", &builtin_type_int32}, | |
86 | /* 32 */ {4, "ftag", &builtin_type_int32}, | |
87 | /* 33 */ {4, "fiseg", &builtin_type_int32}, | |
88 | /* 34 */ {4, "fioff", &builtin_type_int32}, | |
89 | /* 35 */ {4, "foseg", &builtin_type_int32}, | |
90 | /* 36 */ {4, "fooff", &builtin_type_int32}, | |
91 | /* 37 */ {4, "fop", &builtin_type_int32}, | |
92 | /* 38 */ {16, "xmm0", &builtin_type_v4sf}, | |
93 | /* 39 */ {16, "xmm1", &builtin_type_v4sf}, | |
94 | /* 40 */ {16, "xmm2", &builtin_type_v4sf}, | |
95 | /* 41 */ {16, "xmm3", &builtin_type_v4sf}, | |
96 | /* 42 */ {16, "xmm4", &builtin_type_v4sf}, | |
97 | /* 43 */ {16, "xmm5", &builtin_type_v4sf}, | |
98 | /* 44 */ {16, "xmm6", &builtin_type_v4sf}, | |
99 | /* 45 */ {16, "xmm7", &builtin_type_v4sf}, | |
100 | /* 46 */ {16, "xmm8", &builtin_type_v4sf}, | |
101 | /* 47 */ {16, "xmm9", &builtin_type_v4sf}, | |
102 | /* 48 */ {16, "xmm10", &builtin_type_v4sf}, | |
103 | /* 49 */ {16, "xmm11", &builtin_type_v4sf}, | |
104 | /* 50 */ {16, "xmm12", &builtin_type_v4sf}, | |
105 | /* 51 */ {16, "xmm13", &builtin_type_v4sf}, | |
106 | /* 52 */ {16, "xmm14", &builtin_type_v4sf}, | |
107 | /* 53 */ {16, "xmm15", &builtin_type_v4sf}, | |
108 | /* 54 */ {4, "mxcsr", &builtin_type_int32} | |
53e95fcf JS |
109 | }; |
110 | ||
0e04a514 ML |
111 | /* This array is a mapping from Dwarf-2 register |
112 | numbering to GDB's one. Dwarf-2 numbering is | |
113 | defined in x86-64 ABI, section 3.6. */ | |
114 | static int x86_64_dwarf2gdb_regno_map[] = { | |
115 | 0, 1, 2, 3, /* RAX - RDX */ | |
116 | 4, 5, 6, 7, /* RSI, RDI, RBP, RSP */ | |
117 | 8, 9, 10, 11, /* R8 - R11 */ | |
118 | 12, 13, 14, 15, /* R12 - R15 */ | |
119 | -1, /* RA - not mapped */ | |
120 | XMM1_REGNUM - 1, XMM1_REGNUM, /* XMM0 ... */ | |
121 | XMM1_REGNUM + 1, XMM1_REGNUM + 2, | |
122 | XMM1_REGNUM + 3, XMM1_REGNUM + 4, | |
123 | XMM1_REGNUM + 5, XMM1_REGNUM + 6, | |
124 | XMM1_REGNUM + 7, XMM1_REGNUM + 8, | |
125 | XMM1_REGNUM + 9, XMM1_REGNUM + 10, | |
126 | XMM1_REGNUM + 11, XMM1_REGNUM + 12, | |
127 | XMM1_REGNUM + 13, XMM1_REGNUM + 14, /* ... XMM15 */ | |
128 | ST0_REGNUM + 0, ST0_REGNUM + 1, /* ST0 ... */ | |
129 | ST0_REGNUM + 2, ST0_REGNUM + 3, | |
130 | ST0_REGNUM + 4, ST0_REGNUM + 5, | |
131 | ST0_REGNUM + 6, ST0_REGNUM + 7 /* ... ST7 */ | |
132 | }; | |
133 | ||
134 | static int x86_64_dwarf2gdb_regno_map_length = | |
135 | sizeof (x86_64_dwarf2gdb_regno_map) / | |
136 | sizeof (x86_64_dwarf2gdb_regno_map[0]); | |
137 | ||
de220d0f ML |
138 | /* Number of all registers */ |
139 | #define X86_64_NUM_REGS (sizeof (x86_64_register_info_table) / \ | |
140 | sizeof (x86_64_register_info_table[0])) | |
141 | ||
142 | /* Number of general registers. */ | |
143 | #define X86_64_NUM_GREGS (22) | |
144 | ||
145 | int x86_64_num_regs = X86_64_NUM_REGS; | |
146 | int x86_64_num_gregs = X86_64_NUM_GREGS; | |
147 | ||
b6779aa2 AC |
148 | /* Did we already print a note about frame pointer? */ |
149 | int omit_fp_note_printed = 0; | |
150 | ||
53e95fcf JS |
151 | /* Number of bytes of storage in the actual machine representation for |
152 | register REGNO. */ | |
153 | int | |
154 | x86_64_register_raw_size (int regno) | |
155 | { | |
de220d0f | 156 | return x86_64_register_info_table[regno].size; |
53e95fcf JS |
157 | } |
158 | ||
159 | /* x86_64_register_byte_table[i] is the offset into the register file of the | |
160 | start of register number i. We initialize this from | |
de220d0f | 161 | x86_64_register_info_table. */ |
53e95fcf JS |
162 | int x86_64_register_byte_table[X86_64_NUM_REGS]; |
163 | ||
164 | /* Index within `registers' of the first byte of the space for register REGNO. */ | |
165 | int | |
166 | x86_64_register_byte (int regno) | |
167 | { | |
168 | return x86_64_register_byte_table[regno]; | |
169 | } | |
170 | ||
171 | /* Return the GDB type object for the "standard" data type of data in | |
172 | register N. */ | |
173 | static struct type * | |
174 | x86_64_register_virtual_type (int regno) | |
175 | { | |
de220d0f | 176 | return *x86_64_register_info_table[regno].type; |
53e95fcf JS |
177 | } |
178 | ||
53e95fcf JS |
179 | /* x86_64_register_convertible is true if register N's virtual format is |
180 | different from its raw format. Note that this definition assumes | |
181 | that the host supports IEEE 32-bit floats, since it doesn't say | |
182 | that SSE registers need conversion. Even if we can't find a | |
183 | counterexample, this is still sloppy. */ | |
184 | int | |
185 | x86_64_register_convertible (int regno) | |
186 | { | |
187 | return IS_FP_REGNUM (regno); | |
188 | } | |
189 | ||
190 | /* Convert data from raw format for register REGNUM in buffer FROM to | |
191 | virtual format with type TYPE in buffer TO. In principle both | |
192 | formats are identical except that the virtual format has two extra | |
193 | bytes appended that aren't used. We set these to zero. */ | |
194 | void | |
195 | x86_64_register_convert_to_virtual (int regnum, struct type *type, | |
196 | char *from, char *to) | |
197 | { | |
82dbc5f7 | 198 | char buf[12]; |
4657573b | 199 | |
82dbc5f7 AC |
200 | /* We only support floating-point values. */ |
201 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
202 | { | |
203 | warning ("Cannot convert floating-point register value " | |
204 | "to non-floating-point type."); | |
205 | memset (to, 0, TYPE_LENGTH (type)); | |
206 | return; | |
207 | } | |
208 | /* First add the necessary padding. */ | |
209 | memcpy (buf, from, FPU_REG_RAW_SIZE); | |
210 | memset (buf + FPU_REG_RAW_SIZE, 0, sizeof buf - FPU_REG_RAW_SIZE); | |
211 | /* Convert to TYPE. This should be a no-op, if TYPE is equivalent | |
212 | to the extended floating-point format used by the FPU. */ | |
ce0eebec AC |
213 | convert_typed_floating (to, type, buf, |
214 | x86_64_register_virtual_type (regnum)); | |
53e95fcf JS |
215 | } |
216 | ||
217 | /* Convert data from virtual format with type TYPE in buffer FROM to | |
218 | raw format for register REGNUM in buffer TO. Simply omit the two | |
219 | unused bytes. */ | |
220 | ||
221 | void | |
222 | x86_64_register_convert_to_raw (struct type *type, int regnum, | |
223 | char *from, char *to) | |
224 | { | |
ce0eebec | 225 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 12); |
82dbc5f7 | 226 | /* Simply omit the two unused bytes. */ |
53e95fcf JS |
227 | memcpy (to, from, FPU_REG_RAW_SIZE); |
228 | } | |
53e95fcf | 229 | |
0e04a514 ML |
230 | /* Dwarf-2 <-> GDB register numbers mapping. */ |
231 | int | |
232 | x86_64_dwarf2_reg_to_regnum (int dw_reg) | |
233 | { | |
234 | if (dw_reg < 0 || dw_reg > x86_64_dwarf2gdb_regno_map_length) | |
235 | { | |
236 | warning ("Dwarf-2 uses unmapped register #%d\n", dw_reg); | |
237 | return dw_reg; | |
238 | } | |
239 | ||
240 | return x86_64_dwarf2gdb_regno_map[dw_reg]; | |
241 | } | |
242 | ||
53e95fcf JS |
243 | /* This is the variable that is set with "set disassembly-flavour", and |
244 | its legitimate values. */ | |
245 | static const char att_flavour[] = "att"; | |
246 | static const char intel_flavour[] = "intel"; | |
247 | static const char *valid_flavours[] = { | |
248 | att_flavour, | |
249 | intel_flavour, | |
250 | NULL | |
251 | }; | |
252 | static const char *disassembly_flavour = att_flavour; | |
253 | ||
26abbdc4 MK |
254 | /* Push the return address (pointing to the call dummy) onto the stack |
255 | and return the new value for the stack pointer. */ | |
256 | ||
53e95fcf JS |
257 | static CORE_ADDR |
258 | x86_64_push_return_address (CORE_ADDR pc, CORE_ADDR sp) | |
259 | { | |
260 | char buf[8]; | |
261 | ||
262 | store_unsigned_integer (buf, 8, CALL_DUMMY_ADDRESS ()); | |
53e95fcf JS |
263 | write_memory (sp - 8, buf, 8); |
264 | return sp - 8; | |
265 | } | |
266 | ||
26abbdc4 | 267 | static void |
53e95fcf JS |
268 | x86_64_pop_frame (void) |
269 | { | |
270 | generic_pop_current_frame (cfi_pop_frame); | |
271 | } | |
272 | \f | |
273 | ||
274 | /* The returning of values is done according to the special algorithm. | |
275 | Some types are returned in registers an some (big structures) in memory. | |
276 | See ABI for details. | |
277 | */ | |
278 | ||
279 | #define MAX_CLASSES 4 | |
280 | ||
281 | enum x86_64_reg_class | |
282 | { | |
283 | X86_64_NO_CLASS, | |
284 | X86_64_INTEGER_CLASS, | |
285 | X86_64_INTEGERSI_CLASS, | |
286 | X86_64_SSE_CLASS, | |
287 | X86_64_SSESF_CLASS, | |
288 | X86_64_SSEDF_CLASS, | |
289 | X86_64_SSEUP_CLASS, | |
290 | X86_64_X87_CLASS, | |
291 | X86_64_X87UP_CLASS, | |
292 | X86_64_MEMORY_CLASS | |
293 | }; | |
294 | ||
295 | /* Return the union class of CLASS1 and CLASS2. | |
296 | See the x86-64 ABI for details. */ | |
297 | ||
298 | static enum x86_64_reg_class | |
299 | merge_classes (enum x86_64_reg_class class1, enum x86_64_reg_class class2) | |
300 | { | |
301 | /* Rule #1: If both classes are equal, this is the resulting class. */ | |
302 | if (class1 == class2) | |
303 | return class1; | |
304 | ||
26abbdc4 MK |
305 | /* Rule #2: If one of the classes is NO_CLASS, the resulting class |
306 | is the other class. */ | |
53e95fcf JS |
307 | if (class1 == X86_64_NO_CLASS) |
308 | return class2; | |
309 | if (class2 == X86_64_NO_CLASS) | |
310 | return class1; | |
311 | ||
312 | /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ | |
313 | if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) | |
314 | return X86_64_MEMORY_CLASS; | |
315 | ||
316 | /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ | |
317 | if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) | |
318 | || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) | |
319 | return X86_64_INTEGERSI_CLASS; | |
320 | if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS | |
321 | || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) | |
322 | return X86_64_INTEGER_CLASS; | |
323 | ||
324 | /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ | |
325 | if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS | |
326 | || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) | |
327 | return X86_64_MEMORY_CLASS; | |
328 | ||
329 | /* Rule #6: Otherwise class SSE is used. */ | |
330 | return X86_64_SSE_CLASS; | |
331 | } | |
332 | ||
26abbdc4 MK |
333 | /* Classify the argument type. CLASSES will be filled by the register |
334 | class used to pass each word of the operand. The number of words | |
335 | is returned. In case the parameter should be passed in memory, 0 | |
336 | is returned. As a special case for zero sized containers, | |
337 | classes[0] will be NO_CLASS and 1 is returned. | |
53e95fcf | 338 | |
26abbdc4 | 339 | See the x86-64 psABI for details. */ |
53e95fcf JS |
340 | |
341 | static int | |
342 | classify_argument (struct type *type, | |
343 | enum x86_64_reg_class classes[MAX_CLASSES], int bit_offset) | |
344 | { | |
345 | int bytes = TYPE_LENGTH (type); | |
346 | int words = (bytes + 8 - 1) / 8; | |
347 | ||
348 | switch (TYPE_CODE (type)) | |
349 | { | |
350 | case TYPE_CODE_ARRAY: | |
351 | case TYPE_CODE_STRUCT: | |
352 | case TYPE_CODE_UNION: | |
353 | { | |
354 | int i; | |
355 | enum x86_64_reg_class subclasses[MAX_CLASSES]; | |
356 | ||
357 | /* On x86-64 we pass structures larger than 16 bytes on the stack. */ | |
358 | if (bytes > 16) | |
359 | return 0; | |
360 | ||
361 | for (i = 0; i < words; i++) | |
362 | classes[i] = X86_64_NO_CLASS; | |
363 | ||
26abbdc4 MK |
364 | /* Zero sized arrays or structures are NO_CLASS. We return 0 |
365 | to signalize memory class, so handle it as special case. */ | |
53e95fcf JS |
366 | if (!words) |
367 | { | |
368 | classes[0] = X86_64_NO_CLASS; | |
369 | return 1; | |
370 | } | |
371 | switch (TYPE_CODE (type)) | |
372 | { | |
373 | case TYPE_CODE_STRUCT: | |
374 | { | |
375 | int j; | |
0004e5a2 | 376 | for (j = 0; j < TYPE_NFIELDS (type); ++j) |
53e95fcf | 377 | { |
0004e5a2 | 378 | int num = classify_argument (TYPE_FIELDS (type)[j].type, |
53e95fcf | 379 | subclasses, |
8dda9770 ML |
380 | (TYPE_FIELDS (type)[j].loc. |
381 | bitpos + bit_offset) % 256); | |
53e95fcf JS |
382 | if (!num) |
383 | return 0; | |
384 | for (i = 0; i < num; i++) | |
385 | { | |
386 | int pos = | |
8dda9770 ML |
387 | (TYPE_FIELDS (type)[j].loc.bitpos + |
388 | bit_offset) / 8 / 8; | |
53e95fcf JS |
389 | classes[i + pos] = |
390 | merge_classes (subclasses[i], classes[i + pos]); | |
391 | } | |
392 | } | |
393 | } | |
394 | break; | |
395 | case TYPE_CODE_ARRAY: | |
396 | { | |
397 | int num; | |
398 | ||
0004e5a2 | 399 | num = classify_argument (TYPE_TARGET_TYPE (type), |
53e95fcf JS |
400 | subclasses, bit_offset); |
401 | if (!num) | |
402 | return 0; | |
403 | ||
404 | /* The partial classes are now full classes. */ | |
405 | if (subclasses[0] == X86_64_SSESF_CLASS && bytes != 4) | |
406 | subclasses[0] = X86_64_SSE_CLASS; | |
407 | if (subclasses[0] == X86_64_INTEGERSI_CLASS && bytes != 4) | |
408 | subclasses[0] = X86_64_INTEGER_CLASS; | |
409 | ||
410 | for (i = 0; i < words; i++) | |
411 | classes[i] = subclasses[i % num]; | |
412 | } | |
413 | break; | |
414 | case TYPE_CODE_UNION: | |
415 | { | |
416 | int j; | |
417 | { | |
0004e5a2 | 418 | for (j = 0; j < TYPE_NFIELDS (type); ++j) |
53e95fcf JS |
419 | { |
420 | int num; | |
0004e5a2 | 421 | num = classify_argument (TYPE_FIELDS (type)[j].type, |
53e95fcf JS |
422 | subclasses, bit_offset); |
423 | if (!num) | |
424 | return 0; | |
425 | for (i = 0; i < num; i++) | |
426 | classes[i] = merge_classes (subclasses[i], classes[i]); | |
427 | } | |
428 | } | |
429 | } | |
430 | break; | |
4657573b ML |
431 | default: |
432 | break; | |
53e95fcf JS |
433 | } |
434 | /* Final merger cleanup. */ | |
435 | for (i = 0; i < words; i++) | |
436 | { | |
437 | /* If one class is MEMORY, everything should be passed in | |
438 | memory. */ | |
439 | if (classes[i] == X86_64_MEMORY_CLASS) | |
440 | return 0; | |
441 | ||
442 | /* The X86_64_SSEUP_CLASS should be always preceeded by | |
443 | X86_64_SSE_CLASS. */ | |
444 | if (classes[i] == X86_64_SSEUP_CLASS | |
445 | && (i == 0 || classes[i - 1] != X86_64_SSE_CLASS)) | |
446 | classes[i] = X86_64_SSE_CLASS; | |
447 | ||
26abbdc4 | 448 | /* X86_64_X87UP_CLASS should be preceeded by X86_64_X87_CLASS. */ |
53e95fcf JS |
449 | if (classes[i] == X86_64_X87UP_CLASS |
450 | && (i == 0 || classes[i - 1] != X86_64_X87_CLASS)) | |
451 | classes[i] = X86_64_SSE_CLASS; | |
452 | } | |
453 | return words; | |
454 | } | |
455 | break; | |
456 | case TYPE_CODE_FLT: | |
457 | switch (bytes) | |
458 | { | |
459 | case 4: | |
460 | if (!(bit_offset % 64)) | |
461 | classes[0] = X86_64_SSESF_CLASS; | |
462 | else | |
463 | classes[0] = X86_64_SSE_CLASS; | |
464 | return 1; | |
465 | case 8: | |
466 | classes[0] = X86_64_SSEDF_CLASS; | |
467 | return 1; | |
468 | case 16: | |
469 | classes[0] = X86_64_X87_CLASS; | |
470 | classes[1] = X86_64_X87UP_CLASS; | |
471 | return 2; | |
472 | } | |
473 | break; | |
474 | case TYPE_CODE_INT: | |
475 | case TYPE_CODE_PTR: | |
476 | switch (bytes) | |
477 | { | |
478 | case 1: | |
479 | case 2: | |
480 | case 4: | |
481 | case 8: | |
482 | if (bytes * 8 + bit_offset <= 32) | |
483 | classes[0] = X86_64_INTEGERSI_CLASS; | |
484 | else | |
485 | classes[0] = X86_64_INTEGER_CLASS; | |
486 | return 1; | |
487 | case 16: | |
488 | classes[0] = classes[1] = X86_64_INTEGER_CLASS; | |
489 | return 2; | |
490 | default: | |
491 | break; | |
492 | } | |
493 | case TYPE_CODE_VOID: | |
494 | return 0; | |
8dda9770 | 495 | default: /* Avoid warning. */ |
4657573b | 496 | break; |
53e95fcf | 497 | } |
ce0eebec AC |
498 | internal_error (__FILE__, __LINE__, |
499 | "classify_argument: unknown argument type"); | |
53e95fcf JS |
500 | } |
501 | ||
26abbdc4 MK |
502 | /* Examine the argument and set *INT_NREGS and *SSE_NREGS to the |
503 | number of registers required based on the information passed in | |
504 | CLASSES. Return 0 if parameter should be passed in memory. */ | |
53e95fcf JS |
505 | |
506 | static int | |
507 | examine_argument (enum x86_64_reg_class classes[MAX_CLASSES], | |
508 | int n, int *int_nregs, int *sse_nregs) | |
509 | { | |
510 | *int_nregs = 0; | |
511 | *sse_nregs = 0; | |
512 | if (!n) | |
513 | return 0; | |
514 | for (n--; n >= 0; n--) | |
515 | switch (classes[n]) | |
516 | { | |
517 | case X86_64_INTEGER_CLASS: | |
518 | case X86_64_INTEGERSI_CLASS: | |
519 | (*int_nregs)++; | |
520 | break; | |
521 | case X86_64_SSE_CLASS: | |
522 | case X86_64_SSESF_CLASS: | |
523 | case X86_64_SSEDF_CLASS: | |
524 | (*sse_nregs)++; | |
525 | break; | |
526 | case X86_64_NO_CLASS: | |
527 | case X86_64_SSEUP_CLASS: | |
528 | case X86_64_X87_CLASS: | |
529 | case X86_64_X87UP_CLASS: | |
530 | break; | |
531 | case X86_64_MEMORY_CLASS: | |
ce0eebec AC |
532 | internal_error (__FILE__, __LINE__, |
533 | "examine_argument: unexpected memory class"); | |
53e95fcf JS |
534 | } |
535 | return 1; | |
536 | } | |
537 | ||
538 | #define RET_INT_REGS 2 | |
539 | #define RET_SSE_REGS 2 | |
540 | ||
541 | /* Check if the structure in value_type is returned in registers or in | |
26abbdc4 MK |
542 | memory. If this function returns 1, GDB will call |
543 | STORE_STRUCT_RETURN and EXTRACT_STRUCT_VALUE_ADDRESS else | |
544 | STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE will be used. */ | |
53e95fcf JS |
545 | int |
546 | x86_64_use_struct_convention (int gcc_p, struct type *value_type) | |
547 | { | |
548 | enum x86_64_reg_class class[MAX_CLASSES]; | |
549 | int n = classify_argument (value_type, class, 0); | |
550 | int needed_intregs; | |
551 | int needed_sseregs; | |
552 | ||
553 | return (!n || | |
554 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
555 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS); | |
556 | } | |
557 | ||
53e95fcf JS |
558 | /* Extract from an array REGBUF containing the (raw) register state, a |
559 | function return value of TYPE, and copy that, in virtual format, | |
560 | into VALBUF. */ | |
561 | ||
562 | void | |
48037ead ML |
563 | x86_64_extract_return_value (struct type *type, struct regcache *regcache, |
564 | void *valbuf) | |
53e95fcf JS |
565 | { |
566 | enum x86_64_reg_class class[MAX_CLASSES]; | |
567 | int n = classify_argument (type, class, 0); | |
568 | int needed_intregs; | |
569 | int needed_sseregs; | |
570 | int intreg = 0; | |
571 | int ssereg = 0; | |
572 | int offset = 0; | |
573 | int ret_int_r[RET_INT_REGS] = { RAX_REGNUM, RDX_REGNUM }; | |
574 | int ret_sse_r[RET_SSE_REGS] = { XMM0_REGNUM, XMM1_REGNUM }; | |
575 | ||
576 | if (!n || | |
577 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
578 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS) | |
579 | { /* memory class */ | |
580 | CORE_ADDR addr; | |
48037ead | 581 | regcache_cooked_read (regcache, RAX_REGNUM, &addr); |
53e95fcf JS |
582 | read_memory (addr, valbuf, TYPE_LENGTH (type)); |
583 | return; | |
584 | } | |
585 | else | |
586 | { | |
587 | int i; | |
588 | for (i = 0; i < n; i++) | |
589 | { | |
590 | switch (class[i]) | |
591 | { | |
592 | case X86_64_NO_CLASS: | |
593 | break; | |
594 | case X86_64_INTEGER_CLASS: | |
48037ead ML |
595 | regcache_cooked_read (regcache, ret_int_r[(intreg + 1) / 2], |
596 | (char *) valbuf + offset); | |
53e95fcf JS |
597 | offset += 8; |
598 | intreg += 2; | |
599 | break; | |
600 | case X86_64_INTEGERSI_CLASS: | |
48037ead ML |
601 | regcache_cooked_read_part (regcache, ret_int_r[intreg / 2], |
602 | 0, 4, (char *) valbuf + offset); | |
53e95fcf JS |
603 | offset += 8; |
604 | intreg++; | |
605 | break; | |
606 | case X86_64_SSEDF_CLASS: | |
607 | case X86_64_SSESF_CLASS: | |
608 | case X86_64_SSE_CLASS: | |
48037ead ML |
609 | regcache_cooked_read_part (regcache, |
610 | ret_sse_r[(ssereg + 1) / 2], 0, 8, | |
611 | (char *) valbuf + offset); | |
53e95fcf JS |
612 | offset += 8; |
613 | ssereg += 2; | |
614 | break; | |
615 | case X86_64_SSEUP_CLASS: | |
48037ead ML |
616 | regcache_cooked_read_part (regcache, ret_sse_r[ssereg / 2], |
617 | 0, 8, (char *) valbuf + offset); | |
53e95fcf JS |
618 | offset += 8; |
619 | ssereg++; | |
620 | break; | |
621 | case X86_64_X87_CLASS: | |
48037ead ML |
622 | regcache_cooked_read_part (regcache, FP0_REGNUM, |
623 | 0, 8, (char *) valbuf + offset); | |
53e95fcf JS |
624 | offset += 8; |
625 | break; | |
626 | case X86_64_X87UP_CLASS: | |
48037ead ML |
627 | regcache_cooked_read_part (regcache, FP0_REGNUM, |
628 | 8, 2, (char *) valbuf + offset); | |
53e95fcf JS |
629 | offset += 8; |
630 | break; | |
631 | case X86_64_MEMORY_CLASS: | |
632 | default: | |
633 | internal_error (__FILE__, __LINE__, | |
634 | "Unexpected argument class"); | |
635 | } | |
636 | } | |
637 | } | |
638 | } | |
639 | ||
53e95fcf JS |
640 | static void |
641 | x86_64_frame_init_saved_regs (struct frame_info *fi) | |
642 | { | |
26abbdc4 | 643 | /* Do nothing. Everything is handled by the stack unwinding code. */ |
53e95fcf JS |
644 | } |
645 | ||
646 | #define INT_REGS 6 | |
647 | #define SSE_REGS 16 | |
648 | ||
53e95fcf | 649 | CORE_ADDR |
d45fc520 | 650 | x86_64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
53e95fcf JS |
651 | int struct_return, CORE_ADDR struct_addr) |
652 | { | |
653 | int intreg = 0; | |
654 | int ssereg = 0; | |
655 | int i; | |
ce0eebec | 656 | static int int_parameter_registers[INT_REGS] = { |
de220d0f ML |
657 | 5 /* RDI */ , 4 /* RSI */ , |
658 | 3 /* RDX */ , 2 /* RCX */ , | |
91fd20f7 | 659 | 8 /* R8 */ , 9 /* R9 */ |
ce0eebec | 660 | }; |
53e95fcf | 661 | /* XMM0 - XMM15 */ |
ce0eebec | 662 | static int sse_parameter_registers[SSE_REGS] = { |
de220d0f ML |
663 | XMM1_REGNUM - 1, XMM1_REGNUM, XMM1_REGNUM + 1, XMM1_REGNUM + 2, |
664 | XMM1_REGNUM + 3, XMM1_REGNUM + 4, XMM1_REGNUM + 5, XMM1_REGNUM + 6, | |
665 | XMM1_REGNUM + 7, XMM1_REGNUM + 8, XMM1_REGNUM + 9, XMM1_REGNUM + 10, | |
666 | XMM1_REGNUM + 11, XMM1_REGNUM + 12, XMM1_REGNUM + 13, XMM1_REGNUM + 14 | |
ce0eebec AC |
667 | }; |
668 | int stack_values_count = 0; | |
82dbc5f7 | 669 | int *stack_values; |
e9f30c21 | 670 | stack_values = alloca (nargs * sizeof (int)); |
53e95fcf JS |
671 | for (i = 0; i < nargs; i++) |
672 | { | |
673 | enum x86_64_reg_class class[MAX_CLASSES]; | |
674 | int n = classify_argument (args[i]->type, class, 0); | |
675 | int needed_intregs; | |
676 | int needed_sseregs; | |
677 | ||
678 | if (!n || | |
679 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) | |
82dbc5f7 AC |
680 | || intreg / 2 + needed_intregs > INT_REGS |
681 | || ssereg / 2 + needed_sseregs > SSE_REGS) | |
ce0eebec AC |
682 | { /* memory class */ |
683 | stack_values[stack_values_count++] = i; | |
53e95fcf JS |
684 | } |
685 | else | |
686 | { | |
687 | int j; | |
688 | for (j = 0; j < n; j++) | |
689 | { | |
690 | int offset = 0; | |
691 | switch (class[j]) | |
692 | { | |
693 | case X86_64_NO_CLASS: | |
694 | break; | |
695 | case X86_64_INTEGER_CLASS: | |
4caf0990 AC |
696 | deprecated_write_register_gen (int_parameter_registers |
697 | [(intreg + 1) / 2], | |
698 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
699 | offset += 8; |
700 | intreg += 2; | |
701 | break; | |
702 | case X86_64_INTEGERSI_CLASS: | |
4caf0990 AC |
703 | deprecated_write_register_gen (int_parameter_registers[intreg / 2], |
704 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
705 | offset += 8; |
706 | intreg++; | |
707 | break; | |
708 | case X86_64_SSEDF_CLASS: | |
709 | case X86_64_SSESF_CLASS: | |
710 | case X86_64_SSE_CLASS: | |
4caf0990 AC |
711 | deprecated_write_register_gen (sse_parameter_registers |
712 | [(ssereg + 1) / 2], | |
713 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
714 | offset += 8; |
715 | ssereg += 2; | |
716 | break; | |
717 | case X86_64_SSEUP_CLASS: | |
4caf0990 AC |
718 | deprecated_write_register_gen (sse_parameter_registers[ssereg / 2], |
719 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
720 | offset += 8; |
721 | ssereg++; | |
722 | break; | |
723 | case X86_64_X87_CLASS: | |
53e95fcf | 724 | case X86_64_MEMORY_CLASS: |
ce0eebec | 725 | stack_values[stack_values_count++] = i; |
82dbc5f7 AC |
726 | break; |
727 | case X86_64_X87UP_CLASS: | |
53e95fcf JS |
728 | break; |
729 | default: | |
730 | internal_error (__FILE__, __LINE__, | |
731 | "Unexpected argument class"); | |
732 | } | |
733 | intreg += intreg % 2; | |
734 | ssereg += ssereg % 2; | |
735 | } | |
736 | } | |
737 | } | |
82dbc5f7 AC |
738 | while (--stack_values_count >= 0) |
739 | { | |
e9f30c21 | 740 | struct value *arg = args[stack_values[stack_values_count]]; |
82dbc5f7 AC |
741 | int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg)); |
742 | len += 7; | |
743 | len -= len % 8; | |
744 | sp -= len; | |
745 | write_memory (sp, VALUE_CONTENTS_ALL (arg), len); | |
746 | } | |
53e95fcf JS |
747 | return sp; |
748 | } | |
749 | ||
750 | /* Write into the appropriate registers a function return value stored | |
751 | in VALBUF of type TYPE, given in virtual format. */ | |
752 | void | |
48037ead ML |
753 | x86_64_store_return_value (struct type *type, struct regcache *regcache, |
754 | const void *valbuf) | |
53e95fcf JS |
755 | { |
756 | int len = TYPE_LENGTH (type); | |
757 | ||
758 | if (TYPE_CODE_FLT == TYPE_CODE (type)) | |
759 | { | |
760 | /* Floating-point return values can be found in %st(0). */ | |
761 | if (len == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT | |
762 | && TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext) | |
763 | { | |
764 | /* Copy straight over. */ | |
48037ead | 765 | regcache_cooked_write (regcache, FP0_REGNUM, valbuf); |
53e95fcf JS |
766 | } |
767 | else | |
768 | { | |
769 | char buf[FPU_REG_RAW_SIZE]; | |
770 | DOUBLEST val; | |
771 | ||
772 | /* Convert the value found in VALBUF to the extended | |
773 | floating point format used by the FPU. This is probably | |
774 | not exactly how it would happen on the target itself, but | |
775 | it is the best we can do. */ | |
776 | val = extract_floating (valbuf, TYPE_LENGTH (type)); | |
777 | floatformat_from_doublest (&floatformat_i387_ext, &val, buf); | |
48037ead ML |
778 | regcache_cooked_write_part (regcache, FP0_REGNUM, |
779 | 0, FPU_REG_RAW_SIZE, buf); | |
53e95fcf JS |
780 | } |
781 | } | |
782 | else | |
783 | { | |
784 | int low_size = REGISTER_RAW_SIZE (0); | |
785 | int high_size = REGISTER_RAW_SIZE (1); | |
786 | ||
787 | if (len <= low_size) | |
48037ead | 788 | regcache_cooked_write_part (regcache, 0, 0, len, valbuf); |
53e95fcf JS |
789 | else if (len <= (low_size + high_size)) |
790 | { | |
48037ead ML |
791 | regcache_cooked_write_part (regcache, 0, 0, low_size, valbuf); |
792 | regcache_cooked_write_part (regcache, 1, 0, | |
793 | len - low_size, | |
794 | (const char *) valbuf + low_size); | |
53e95fcf JS |
795 | } |
796 | else | |
797 | internal_error (__FILE__, __LINE__, | |
798 | "Cannot store return value of %d bytes long.", len); | |
799 | } | |
800 | } | |
801 | \f | |
802 | ||
1cf877ad ML |
803 | const char * |
804 | x86_64_register_name (int reg_nr) | |
53e95fcf | 805 | { |
de220d0f | 806 | if (reg_nr < 0 || reg_nr >= X86_64_NUM_REGS) |
53e95fcf | 807 | return NULL; |
de220d0f | 808 | return x86_64_register_info_table[reg_nr].name; |
53e95fcf | 809 | } |
8dda9770 ML |
810 | |
811 | int | |
1cf877ad | 812 | x86_64_register_number (const char *name) |
8dda9770 ML |
813 | { |
814 | int reg_nr; | |
815 | ||
816 | for (reg_nr = 0; reg_nr < X86_64_NUM_REGS; reg_nr++) | |
817 | if (strcmp (name, x86_64_register_info_table[reg_nr].name) == 0) | |
818 | return reg_nr; | |
819 | return -1; | |
820 | } | |
53e95fcf JS |
821 | \f |
822 | ||
823 | ||
824 | /* We have two flavours of disassembly. The machinery on this page | |
825 | deals with switching between those. */ | |
826 | ||
827 | static int | |
828 | gdb_print_insn_x86_64 (bfd_vma memaddr, disassemble_info * info) | |
829 | { | |
830 | if (disassembly_flavour == att_flavour) | |
831 | return print_insn_i386_att (memaddr, info); | |
832 | else if (disassembly_flavour == intel_flavour) | |
833 | return print_insn_i386_intel (memaddr, info); | |
834 | /* Never reached -- disassembly_flavour is always either att_flavour | |
835 | or intel_flavour. */ | |
836 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); | |
837 | } | |
838 | \f | |
839 | ||
840 | /* Store the address of the place in which to copy the structure the | |
841 | subroutine will return. This is called from call_function. */ | |
842 | void | |
843 | x86_64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) | |
844 | { | |
845 | write_register (RDI_REGNUM, addr); | |
846 | } | |
847 | ||
848 | int | |
849 | x86_64_frameless_function_invocation (struct frame_info *frame) | |
850 | { | |
851 | return 0; | |
852 | } | |
853 | ||
6d686a84 ML |
854 | /* We will handle only functions beginning with: |
855 | 55 pushq %rbp | |
856 | 48 89 e5 movq %rsp,%rbp | |
857 | Any function that doesn't start with this sequence | |
858 | will be assumed to have no prologue and thus no valid | |
859 | frame pointer in %rbp. */ | |
860 | #define PROLOG_BUFSIZE 4 | |
861 | int | |
862 | x86_64_function_has_prologue (CORE_ADDR pc) | |
863 | { | |
864 | int i; | |
865 | unsigned char prolog_expect[PROLOG_BUFSIZE] = { 0x55, 0x48, 0x89, 0xe5 }, | |
866 | prolog_buf[PROLOG_BUFSIZE]; | |
867 | ||
868 | read_memory (pc, (char *) prolog_buf, PROLOG_BUFSIZE); | |
869 | ||
870 | /* First check, whether pc points to pushq %rbp, movq %rsp,%rbp. */ | |
871 | for (i = 0; i < PROLOG_BUFSIZE; i++) | |
872 | if (prolog_expect[i] != prolog_buf[i]) | |
873 | return 0; /* ... no, it doesn't. Nothing to skip. */ | |
874 | ||
875 | return 1; | |
876 | } | |
877 | ||
e76e1718 ML |
878 | /* If a function with debugging information and known beginning |
879 | is detected, we will return pc of the next line in the source | |
880 | code. With this approach we effectively skip the prolog. */ | |
881 | ||
53e95fcf JS |
882 | CORE_ADDR |
883 | x86_64_skip_prologue (CORE_ADDR pc) | |
884 | { | |
482a4d06 | 885 | int i; |
e76e1718 ML |
886 | struct symtab_and_line v_sal; |
887 | struct symbol *v_function; | |
482a4d06 | 888 | CORE_ADDR endaddr; |
e76e1718 | 889 | |
6d686a84 ML |
890 | if (! x86_64_function_has_prologue (pc)) |
891 | return pc; | |
b1ab997b | 892 | |
26abbdc4 | 893 | /* OK, we have found the prologue and want PC of the first |
b1ab997b ML |
894 | non-prologue instruction. */ |
895 | pc += PROLOG_BUFSIZE; | |
e76e1718 ML |
896 | |
897 | v_function = find_pc_function (pc); | |
898 | v_sal = find_pc_line (pc, 0); | |
899 | ||
26abbdc4 MK |
900 | /* If pc doesn't point to a function with debuginfo, some of the |
901 | following may be NULL. */ | |
e76e1718 ML |
902 | if (!v_function || !v_function->ginfo.value.block || !v_sal.symtab) |
903 | return pc; | |
904 | ||
8da065d5 | 905 | endaddr = BLOCK_END (SYMBOL_BLOCK_VALUE (v_function)); |
e76e1718 ML |
906 | |
907 | for (i = 0; i < v_sal.symtab->linetable->nitems; i++) | |
482a4d06 | 908 | if (v_sal.symtab->linetable->item[i].pc >= pc |
e76e1718 ML |
909 | && v_sal.symtab->linetable->item[i].pc < endaddr) |
910 | { | |
911 | pc = v_sal.symtab->linetable->item[i].pc; | |
e76e1718 ML |
912 | break; |
913 | } | |
914 | ||
53e95fcf JS |
915 | return pc; |
916 | } | |
917 | ||
918 | /* Sequence of bytes for breakpoint instruction. */ | |
ab91194c | 919 | static const unsigned char * |
b64bbf8c | 920 | x86_64_breakpoint_from_pc (CORE_ADDR *pc, int *lenptr) |
53e95fcf JS |
921 | { |
922 | static unsigned char breakpoint[] = { 0xcc }; | |
923 | *lenptr = 1; | |
924 | return breakpoint; | |
925 | } | |
926 | ||
166f4c7b ML |
927 | static void |
928 | x86_64_save_dummy_frame_tos (CORE_ADDR sp) | |
929 | { | |
930 | /* We must add the size of the return address that is already | |
931 | put on the stack. */ | |
932 | generic_save_dummy_frame_tos (sp + | |
933 | TYPE_LENGTH (builtin_type_void_func_ptr)); | |
934 | } | |
935 | ||
936 | static struct frame_id | |
937 | x86_64_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *frame) | |
938 | { | |
939 | struct frame_id id; | |
940 | ||
941 | id.pc = frame_pc_unwind (frame); | |
942 | frame_unwind_unsigned_register (frame, SP_REGNUM, &id.base); | |
943 | ||
944 | return id; | |
945 | } | |
946 | ||
2213a65d | 947 | void |
0c1a73d6 | 948 | x86_64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
53e95fcf | 949 | { |
0c1a73d6 | 950 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
de220d0f | 951 | int i, sum; |
53e95fcf | 952 | |
b83b026c | 953 | /* The x86-64 has 16 SSE registers. */ |
0c1a73d6 | 954 | tdep->num_xmm_regs = 16; |
53e95fcf | 955 | |
0c1a73d6 | 956 | /* This is what all the fuss is about. */ |
53e95fcf JS |
957 | set_gdbarch_long_bit (gdbarch, 64); |
958 | set_gdbarch_long_long_bit (gdbarch, 64); | |
959 | set_gdbarch_ptr_bit (gdbarch, 64); | |
960 | ||
b83b026c MK |
961 | /* In contrast to the i386, on the x86-64 a `long double' actually |
962 | takes up 128 bits, even though it's still based on the i387 | |
963 | extended floating-point format which has only 80 significant bits. */ | |
964 | set_gdbarch_long_double_bit (gdbarch, 128); | |
965 | ||
53e95fcf | 966 | set_gdbarch_num_regs (gdbarch, X86_64_NUM_REGS); |
b83b026c MK |
967 | |
968 | /* Register numbers of various important registers. */ | |
969 | set_gdbarch_sp_regnum (gdbarch, 7); /* %rsp */ | |
970 | set_gdbarch_fp_regnum (gdbarch, 6); /* %rbp */ | |
971 | set_gdbarch_pc_regnum (gdbarch, 16); /* %rip */ | |
972 | set_gdbarch_ps_regnum (gdbarch, 17); /* %eflags */ | |
973 | set_gdbarch_fp0_regnum (gdbarch, X86_64_NUM_GREGS); /* %st(0) */ | |
974 | ||
975 | /* The "default" register numbering scheme for the x86-64 is | |
976 | referred to as the "DWARF register number mapping" in the psABI. | |
977 | The preferred debugging format for all known x86-64 targets is | |
978 | actually DWARF2, and GCC doesn't seem to support DWARF (that is | |
979 | DWARF-1), but we provide the same mapping just in case. This | |
980 | mapping is also used for stabs, which GCC does support. */ | |
981 | set_gdbarch_stab_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
982 | set_gdbarch_dwarf_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
983 | set_gdbarch_dwarf2_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
984 | ||
985 | /* We don't override SDB_REG_RO_REGNUM, sice COFF doesn't seem to be | |
986 | in use on any of the supported x86-64 targets. */ | |
987 | ||
1cf877ad | 988 | set_gdbarch_register_name (gdbarch, x86_64_register_name); |
53e95fcf | 989 | set_gdbarch_register_size (gdbarch, 8); |
de220d0f | 990 | |
0c1a73d6 MK |
991 | /* Total amount of space needed to store our copies of the machine's |
992 | register (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + | |
993 | SIZEOF_SSE_REGS) */ | |
de220d0f ML |
994 | for (i = 0, sum = 0; i < X86_64_NUM_REGS; i++) |
995 | sum += x86_64_register_info_table[i].size; | |
996 | set_gdbarch_register_bytes (gdbarch, sum); | |
53e95fcf | 997 | |
b83b026c MK |
998 | set_gdbarch_register_raw_size (gdbarch, x86_64_register_raw_size); |
999 | set_gdbarch_register_byte (gdbarch, x86_64_register_byte); | |
53e95fcf JS |
1000 | set_gdbarch_register_virtual_type (gdbarch, x86_64_register_virtual_type); |
1001 | ||
1002 | set_gdbarch_register_convertible (gdbarch, x86_64_register_convertible); | |
1003 | set_gdbarch_register_convert_to_virtual (gdbarch, | |
1004 | x86_64_register_convert_to_virtual); | |
1005 | set_gdbarch_register_convert_to_raw (gdbarch, | |
1006 | x86_64_register_convert_to_raw); | |
1007 | ||
b83b026c | 1008 | /* Getting saved registers is handled by unwind information. */ |
129c1cd6 | 1009 | set_gdbarch_deprecated_get_saved_register (gdbarch, cfi_get_saved_register); |
53e95fcf | 1010 | |
b83b026c | 1011 | /* FIXME: kettenis/20021026: Should we set parm_boundary to 64 here? */ |
53e95fcf | 1012 | set_gdbarch_read_fp (gdbarch, cfi_read_fp); |
53e95fcf | 1013 | |
48037ead ML |
1014 | set_gdbarch_extract_return_value (gdbarch, x86_64_extract_return_value); |
1015 | ||
b83b026c MK |
1016 | set_gdbarch_push_arguments (gdbarch, x86_64_push_arguments); |
1017 | set_gdbarch_push_return_address (gdbarch, x86_64_push_return_address); | |
749b82f6 | 1018 | set_gdbarch_deprecated_pop_frame (gdbarch, x86_64_pop_frame); |
4183d812 | 1019 | set_gdbarch_deprecated_store_struct_return (gdbarch, x86_64_store_struct_return); |
48037ead | 1020 | set_gdbarch_store_return_value (gdbarch, x86_64_store_return_value); |
b83b026c MK |
1021 | /* Override, since this is handled by x86_64_extract_return_value. */ |
1022 | set_gdbarch_extract_struct_value_address (gdbarch, NULL); | |
1023 | set_gdbarch_use_struct_convention (gdbarch, x86_64_use_struct_convention); | |
53e95fcf | 1024 | |
f30ee0bc | 1025 | set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); |
b83b026c | 1026 | set_gdbarch_skip_prologue (gdbarch, x86_64_skip_prologue); |
53e95fcf | 1027 | |
618ce49f | 1028 | set_gdbarch_deprecated_frame_chain (gdbarch, x86_64_linux_frame_chain); |
b83b026c MK |
1029 | set_gdbarch_frameless_function_invocation (gdbarch, |
1030 | x86_64_frameless_function_invocation); | |
b83b026c MK |
1031 | /* FIXME: kettenis/20021026: These two are GNU/Linux-specific and |
1032 | should be moved elsewhere. */ | |
8bedc050 | 1033 | set_gdbarch_deprecated_frame_saved_pc (gdbarch, x86_64_linux_frame_saved_pc); |
b83b026c | 1034 | set_gdbarch_saved_pc_after_call (gdbarch, x86_64_linux_saved_pc_after_call); |
53e95fcf | 1035 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); |
b83b026c MK |
1036 | /* FIXME: kettenis/20021026: This one is GNU/Linux-specific too. */ |
1037 | set_gdbarch_pc_in_sigtramp (gdbarch, x86_64_linux_in_sigtramp); | |
53e95fcf | 1038 | |
2213a65d MK |
1039 | set_gdbarch_num_pseudo_regs (gdbarch, 0); |
1040 | ||
b83b026c MK |
1041 | /* Build call frame information (CFI) from DWARF2 frame debug info. */ |
1042 | set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info); | |
53e95fcf | 1043 | |
b83b026c | 1044 | /* Initialization of per-frame CFI. */ |
e9582e71 | 1045 | set_gdbarch_deprecated_init_extra_frame_info (gdbarch, cfi_init_extra_frame_info); |
53e95fcf | 1046 | |
b83b026c | 1047 | /* Frame PC initialization is handled by using CFI. */ |
a5afb99f | 1048 | set_gdbarch_deprecated_init_frame_pc (gdbarch, x86_64_init_frame_pc); |
53e95fcf | 1049 | |
b83b026c MK |
1050 | /* Cons up virtual frame pointer for trace. */ |
1051 | set_gdbarch_virtual_frame_pointer (gdbarch, cfi_virtual_frame_pointer); | |
53e95fcf | 1052 | |
b83b026c MK |
1053 | /* FIXME: kettenis/20021026: This is ELF-specific. Fine for now, |
1054 | since all supported x86-64 targets are ELF, but that might change | |
1055 | in the future. */ | |
8a8ab2b9 | 1056 | set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section); |
166f4c7b ML |
1057 | |
1058 | /* Dummy frame helper functions. */ | |
1059 | set_gdbarch_save_dummy_frame_tos (gdbarch, x86_64_save_dummy_frame_tos); | |
1060 | set_gdbarch_unwind_dummy_id (gdbarch, x86_64_unwind_dummy_id); | |
0c1a73d6 MK |
1061 | } |
1062 | ||
53e95fcf JS |
1063 | void |
1064 | _initialize_x86_64_tdep (void) | |
1065 | { | |
53e95fcf JS |
1066 | /* Initialize the table saying where each register starts in the |
1067 | register file. */ | |
1068 | { | |
1069 | int i, offset; | |
1070 | ||
1071 | offset = 0; | |
1072 | for (i = 0; i < X86_64_NUM_REGS; i++) | |
1073 | { | |
1074 | x86_64_register_byte_table[i] = offset; | |
de220d0f | 1075 | offset += x86_64_register_info_table[i].size; |
53e95fcf JS |
1076 | } |
1077 | } | |
53e95fcf | 1078 | } |