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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. | |
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 | ||
e6f181f5 AC |
178 | /* FIXME: cagney/2002-11-11: Once the i386 and x86-64 targets are |
179 | merged, this function can go away. */ | |
180 | int | |
181 | i386_fp_regnum_p (int regnum) | |
182 | { | |
183 | return (regnum < NUM_REGS | |
184 | && (FP0_REGNUM && FP0_REGNUM <= (regnum) && (regnum) < FPC_REGNUM)); | |
185 | } | |
186 | ||
53e95fcf JS |
187 | /* x86_64_register_convertible is true if register N's virtual format is |
188 | different from its raw format. Note that this definition assumes | |
189 | that the host supports IEEE 32-bit floats, since it doesn't say | |
190 | that SSE registers need conversion. Even if we can't find a | |
191 | counterexample, this is still sloppy. */ | |
192 | int | |
193 | x86_64_register_convertible (int regno) | |
194 | { | |
195 | return IS_FP_REGNUM (regno); | |
196 | } | |
197 | ||
198 | /* Convert data from raw format for register REGNUM in buffer FROM to | |
199 | virtual format with type TYPE in buffer TO. In principle both | |
200 | formats are identical except that the virtual format has two extra | |
201 | bytes appended that aren't used. We set these to zero. */ | |
202 | void | |
203 | x86_64_register_convert_to_virtual (int regnum, struct type *type, | |
204 | char *from, char *to) | |
205 | { | |
82dbc5f7 | 206 | char buf[12]; |
4657573b | 207 | |
82dbc5f7 AC |
208 | /* We only support floating-point values. */ |
209 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
210 | { | |
211 | warning ("Cannot convert floating-point register value " | |
212 | "to non-floating-point type."); | |
213 | memset (to, 0, TYPE_LENGTH (type)); | |
214 | return; | |
215 | } | |
216 | /* First add the necessary padding. */ | |
217 | memcpy (buf, from, FPU_REG_RAW_SIZE); | |
218 | memset (buf + FPU_REG_RAW_SIZE, 0, sizeof buf - FPU_REG_RAW_SIZE); | |
219 | /* Convert to TYPE. This should be a no-op, if TYPE is equivalent | |
220 | to the extended floating-point format used by the FPU. */ | |
ce0eebec AC |
221 | convert_typed_floating (to, type, buf, |
222 | x86_64_register_virtual_type (regnum)); | |
53e95fcf JS |
223 | } |
224 | ||
225 | /* Convert data from virtual format with type TYPE in buffer FROM to | |
226 | raw format for register REGNUM in buffer TO. Simply omit the two | |
227 | unused bytes. */ | |
228 | ||
229 | void | |
230 | x86_64_register_convert_to_raw (struct type *type, int regnum, | |
231 | char *from, char *to) | |
232 | { | |
ce0eebec | 233 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 12); |
82dbc5f7 | 234 | /* Simply omit the two unused bytes. */ |
53e95fcf JS |
235 | memcpy (to, from, FPU_REG_RAW_SIZE); |
236 | } | |
53e95fcf | 237 | |
0e04a514 ML |
238 | /* Dwarf-2 <-> GDB register numbers mapping. */ |
239 | int | |
240 | x86_64_dwarf2_reg_to_regnum (int dw_reg) | |
241 | { | |
242 | if (dw_reg < 0 || dw_reg > x86_64_dwarf2gdb_regno_map_length) | |
243 | { | |
244 | warning ("Dwarf-2 uses unmapped register #%d\n", dw_reg); | |
245 | return dw_reg; | |
246 | } | |
247 | ||
248 | return x86_64_dwarf2gdb_regno_map[dw_reg]; | |
249 | } | |
250 | ||
53e95fcf JS |
251 | /* This is the variable that is set with "set disassembly-flavour", and |
252 | its legitimate values. */ | |
253 | static const char att_flavour[] = "att"; | |
254 | static const char intel_flavour[] = "intel"; | |
255 | static const char *valid_flavours[] = { | |
256 | att_flavour, | |
257 | intel_flavour, | |
258 | NULL | |
259 | }; | |
260 | static const char *disassembly_flavour = att_flavour; | |
261 | ||
26abbdc4 MK |
262 | /* Push the return address (pointing to the call dummy) onto the stack |
263 | and return the new value for the stack pointer. */ | |
264 | ||
53e95fcf JS |
265 | static CORE_ADDR |
266 | x86_64_push_return_address (CORE_ADDR pc, CORE_ADDR sp) | |
267 | { | |
268 | char buf[8]; | |
269 | ||
270 | store_unsigned_integer (buf, 8, CALL_DUMMY_ADDRESS ()); | |
53e95fcf JS |
271 | write_memory (sp - 8, buf, 8); |
272 | return sp - 8; | |
273 | } | |
274 | ||
26abbdc4 | 275 | static void |
53e95fcf JS |
276 | x86_64_pop_frame (void) |
277 | { | |
278 | generic_pop_current_frame (cfi_pop_frame); | |
279 | } | |
280 | \f | |
281 | ||
282 | /* The returning of values is done according to the special algorithm. | |
283 | Some types are returned in registers an some (big structures) in memory. | |
284 | See ABI for details. | |
285 | */ | |
286 | ||
287 | #define MAX_CLASSES 4 | |
288 | ||
289 | enum x86_64_reg_class | |
290 | { | |
291 | X86_64_NO_CLASS, | |
292 | X86_64_INTEGER_CLASS, | |
293 | X86_64_INTEGERSI_CLASS, | |
294 | X86_64_SSE_CLASS, | |
295 | X86_64_SSESF_CLASS, | |
296 | X86_64_SSEDF_CLASS, | |
297 | X86_64_SSEUP_CLASS, | |
298 | X86_64_X87_CLASS, | |
299 | X86_64_X87UP_CLASS, | |
300 | X86_64_MEMORY_CLASS | |
301 | }; | |
302 | ||
303 | /* Return the union class of CLASS1 and CLASS2. | |
304 | See the x86-64 ABI for details. */ | |
305 | ||
306 | static enum x86_64_reg_class | |
307 | merge_classes (enum x86_64_reg_class class1, enum x86_64_reg_class class2) | |
308 | { | |
309 | /* Rule #1: If both classes are equal, this is the resulting class. */ | |
310 | if (class1 == class2) | |
311 | return class1; | |
312 | ||
26abbdc4 MK |
313 | /* Rule #2: If one of the classes is NO_CLASS, the resulting class |
314 | is the other class. */ | |
53e95fcf JS |
315 | if (class1 == X86_64_NO_CLASS) |
316 | return class2; | |
317 | if (class2 == X86_64_NO_CLASS) | |
318 | return class1; | |
319 | ||
320 | /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ | |
321 | if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) | |
322 | return X86_64_MEMORY_CLASS; | |
323 | ||
324 | /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ | |
325 | if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) | |
326 | || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) | |
327 | return X86_64_INTEGERSI_CLASS; | |
328 | if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS | |
329 | || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) | |
330 | return X86_64_INTEGER_CLASS; | |
331 | ||
332 | /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ | |
333 | if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS | |
334 | || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) | |
335 | return X86_64_MEMORY_CLASS; | |
336 | ||
337 | /* Rule #6: Otherwise class SSE is used. */ | |
338 | return X86_64_SSE_CLASS; | |
339 | } | |
340 | ||
26abbdc4 MK |
341 | /* Classify the argument type. CLASSES will be filled by the register |
342 | class used to pass each word of the operand. The number of words | |
343 | is returned. In case the parameter should be passed in memory, 0 | |
344 | is returned. As a special case for zero sized containers, | |
345 | classes[0] will be NO_CLASS and 1 is returned. | |
53e95fcf | 346 | |
26abbdc4 | 347 | See the x86-64 psABI for details. */ |
53e95fcf JS |
348 | |
349 | static int | |
350 | classify_argument (struct type *type, | |
351 | enum x86_64_reg_class classes[MAX_CLASSES], int bit_offset) | |
352 | { | |
353 | int bytes = TYPE_LENGTH (type); | |
354 | int words = (bytes + 8 - 1) / 8; | |
355 | ||
356 | switch (TYPE_CODE (type)) | |
357 | { | |
358 | case TYPE_CODE_ARRAY: | |
359 | case TYPE_CODE_STRUCT: | |
360 | case TYPE_CODE_UNION: | |
361 | { | |
362 | int i; | |
363 | enum x86_64_reg_class subclasses[MAX_CLASSES]; | |
364 | ||
365 | /* On x86-64 we pass structures larger than 16 bytes on the stack. */ | |
366 | if (bytes > 16) | |
367 | return 0; | |
368 | ||
369 | for (i = 0; i < words; i++) | |
370 | classes[i] = X86_64_NO_CLASS; | |
371 | ||
26abbdc4 MK |
372 | /* Zero sized arrays or structures are NO_CLASS. We return 0 |
373 | to signalize memory class, so handle it as special case. */ | |
53e95fcf JS |
374 | if (!words) |
375 | { | |
376 | classes[0] = X86_64_NO_CLASS; | |
377 | return 1; | |
378 | } | |
379 | switch (TYPE_CODE (type)) | |
380 | { | |
381 | case TYPE_CODE_STRUCT: | |
382 | { | |
383 | int j; | |
0004e5a2 | 384 | for (j = 0; j < TYPE_NFIELDS (type); ++j) |
53e95fcf | 385 | { |
0004e5a2 | 386 | int num = classify_argument (TYPE_FIELDS (type)[j].type, |
53e95fcf | 387 | subclasses, |
8dda9770 ML |
388 | (TYPE_FIELDS (type)[j].loc. |
389 | bitpos + bit_offset) % 256); | |
53e95fcf JS |
390 | if (!num) |
391 | return 0; | |
392 | for (i = 0; i < num; i++) | |
393 | { | |
394 | int pos = | |
8dda9770 ML |
395 | (TYPE_FIELDS (type)[j].loc.bitpos + |
396 | bit_offset) / 8 / 8; | |
53e95fcf JS |
397 | classes[i + pos] = |
398 | merge_classes (subclasses[i], classes[i + pos]); | |
399 | } | |
400 | } | |
401 | } | |
402 | break; | |
403 | case TYPE_CODE_ARRAY: | |
404 | { | |
405 | int num; | |
406 | ||
0004e5a2 | 407 | num = classify_argument (TYPE_TARGET_TYPE (type), |
53e95fcf JS |
408 | subclasses, bit_offset); |
409 | if (!num) | |
410 | return 0; | |
411 | ||
412 | /* The partial classes are now full classes. */ | |
413 | if (subclasses[0] == X86_64_SSESF_CLASS && bytes != 4) | |
414 | subclasses[0] = X86_64_SSE_CLASS; | |
415 | if (subclasses[0] == X86_64_INTEGERSI_CLASS && bytes != 4) | |
416 | subclasses[0] = X86_64_INTEGER_CLASS; | |
417 | ||
418 | for (i = 0; i < words; i++) | |
419 | classes[i] = subclasses[i % num]; | |
420 | } | |
421 | break; | |
422 | case TYPE_CODE_UNION: | |
423 | { | |
424 | int j; | |
425 | { | |
0004e5a2 | 426 | for (j = 0; j < TYPE_NFIELDS (type); ++j) |
53e95fcf JS |
427 | { |
428 | int num; | |
0004e5a2 | 429 | num = classify_argument (TYPE_FIELDS (type)[j].type, |
53e95fcf JS |
430 | subclasses, bit_offset); |
431 | if (!num) | |
432 | return 0; | |
433 | for (i = 0; i < num; i++) | |
434 | classes[i] = merge_classes (subclasses[i], classes[i]); | |
435 | } | |
436 | } | |
437 | } | |
438 | break; | |
4657573b ML |
439 | default: |
440 | break; | |
53e95fcf JS |
441 | } |
442 | /* Final merger cleanup. */ | |
443 | for (i = 0; i < words; i++) | |
444 | { | |
445 | /* If one class is MEMORY, everything should be passed in | |
446 | memory. */ | |
447 | if (classes[i] == X86_64_MEMORY_CLASS) | |
448 | return 0; | |
449 | ||
450 | /* The X86_64_SSEUP_CLASS should be always preceeded by | |
451 | X86_64_SSE_CLASS. */ | |
452 | if (classes[i] == X86_64_SSEUP_CLASS | |
453 | && (i == 0 || classes[i - 1] != X86_64_SSE_CLASS)) | |
454 | classes[i] = X86_64_SSE_CLASS; | |
455 | ||
26abbdc4 | 456 | /* X86_64_X87UP_CLASS should be preceeded by X86_64_X87_CLASS. */ |
53e95fcf JS |
457 | if (classes[i] == X86_64_X87UP_CLASS |
458 | && (i == 0 || classes[i - 1] != X86_64_X87_CLASS)) | |
459 | classes[i] = X86_64_SSE_CLASS; | |
460 | } | |
461 | return words; | |
462 | } | |
463 | break; | |
464 | case TYPE_CODE_FLT: | |
465 | switch (bytes) | |
466 | { | |
467 | case 4: | |
468 | if (!(bit_offset % 64)) | |
469 | classes[0] = X86_64_SSESF_CLASS; | |
470 | else | |
471 | classes[0] = X86_64_SSE_CLASS; | |
472 | return 1; | |
473 | case 8: | |
474 | classes[0] = X86_64_SSEDF_CLASS; | |
475 | return 1; | |
476 | case 16: | |
477 | classes[0] = X86_64_X87_CLASS; | |
478 | classes[1] = X86_64_X87UP_CLASS; | |
479 | return 2; | |
480 | } | |
481 | break; | |
482 | case TYPE_CODE_INT: | |
483 | case TYPE_CODE_PTR: | |
484 | switch (bytes) | |
485 | { | |
486 | case 1: | |
487 | case 2: | |
488 | case 4: | |
489 | case 8: | |
490 | if (bytes * 8 + bit_offset <= 32) | |
491 | classes[0] = X86_64_INTEGERSI_CLASS; | |
492 | else | |
493 | classes[0] = X86_64_INTEGER_CLASS; | |
494 | return 1; | |
495 | case 16: | |
496 | classes[0] = classes[1] = X86_64_INTEGER_CLASS; | |
497 | return 2; | |
498 | default: | |
499 | break; | |
500 | } | |
501 | case TYPE_CODE_VOID: | |
502 | return 0; | |
8dda9770 | 503 | default: /* Avoid warning. */ |
4657573b | 504 | break; |
53e95fcf | 505 | } |
ce0eebec AC |
506 | internal_error (__FILE__, __LINE__, |
507 | "classify_argument: unknown argument type"); | |
53e95fcf JS |
508 | } |
509 | ||
26abbdc4 MK |
510 | /* Examine the argument and set *INT_NREGS and *SSE_NREGS to the |
511 | number of registers required based on the information passed in | |
512 | CLASSES. Return 0 if parameter should be passed in memory. */ | |
53e95fcf JS |
513 | |
514 | static int | |
515 | examine_argument (enum x86_64_reg_class classes[MAX_CLASSES], | |
516 | int n, int *int_nregs, int *sse_nregs) | |
517 | { | |
518 | *int_nregs = 0; | |
519 | *sse_nregs = 0; | |
520 | if (!n) | |
521 | return 0; | |
522 | for (n--; n >= 0; n--) | |
523 | switch (classes[n]) | |
524 | { | |
525 | case X86_64_INTEGER_CLASS: | |
526 | case X86_64_INTEGERSI_CLASS: | |
527 | (*int_nregs)++; | |
528 | break; | |
529 | case X86_64_SSE_CLASS: | |
530 | case X86_64_SSESF_CLASS: | |
531 | case X86_64_SSEDF_CLASS: | |
532 | (*sse_nregs)++; | |
533 | break; | |
534 | case X86_64_NO_CLASS: | |
535 | case X86_64_SSEUP_CLASS: | |
536 | case X86_64_X87_CLASS: | |
537 | case X86_64_X87UP_CLASS: | |
538 | break; | |
539 | case X86_64_MEMORY_CLASS: | |
ce0eebec AC |
540 | internal_error (__FILE__, __LINE__, |
541 | "examine_argument: unexpected memory class"); | |
53e95fcf JS |
542 | } |
543 | return 1; | |
544 | } | |
545 | ||
546 | #define RET_INT_REGS 2 | |
547 | #define RET_SSE_REGS 2 | |
548 | ||
549 | /* Check if the structure in value_type is returned in registers or in | |
26abbdc4 MK |
550 | memory. If this function returns 1, GDB will call |
551 | STORE_STRUCT_RETURN and EXTRACT_STRUCT_VALUE_ADDRESS else | |
552 | STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE will be used. */ | |
53e95fcf JS |
553 | int |
554 | x86_64_use_struct_convention (int gcc_p, struct type *value_type) | |
555 | { | |
556 | enum x86_64_reg_class class[MAX_CLASSES]; | |
557 | int n = classify_argument (value_type, class, 0); | |
558 | int needed_intregs; | |
559 | int needed_sseregs; | |
560 | ||
561 | return (!n || | |
562 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
563 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS); | |
564 | } | |
565 | ||
53e95fcf JS |
566 | /* Extract from an array REGBUF containing the (raw) register state, a |
567 | function return value of TYPE, and copy that, in virtual format, | |
568 | into VALBUF. */ | |
569 | ||
570 | void | |
571 | x86_64_extract_return_value (struct type *type, char *regbuf, char *valbuf) | |
572 | { | |
573 | enum x86_64_reg_class class[MAX_CLASSES]; | |
574 | int n = classify_argument (type, class, 0); | |
575 | int needed_intregs; | |
576 | int needed_sseregs; | |
577 | int intreg = 0; | |
578 | int ssereg = 0; | |
579 | int offset = 0; | |
580 | int ret_int_r[RET_INT_REGS] = { RAX_REGNUM, RDX_REGNUM }; | |
581 | int ret_sse_r[RET_SSE_REGS] = { XMM0_REGNUM, XMM1_REGNUM }; | |
582 | ||
583 | if (!n || | |
584 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) || | |
585 | needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS) | |
586 | { /* memory class */ | |
587 | CORE_ADDR addr; | |
588 | memcpy (&addr, regbuf, REGISTER_RAW_SIZE (RAX_REGNUM)); | |
589 | read_memory (addr, valbuf, TYPE_LENGTH (type)); | |
590 | return; | |
591 | } | |
592 | else | |
593 | { | |
594 | int i; | |
595 | for (i = 0; i < n; i++) | |
596 | { | |
597 | switch (class[i]) | |
598 | { | |
599 | case X86_64_NO_CLASS: | |
600 | break; | |
601 | case X86_64_INTEGER_CLASS: | |
602 | memcpy (valbuf + offset, | |
603 | regbuf + REGISTER_BYTE (ret_int_r[(intreg + 1) / 2]), | |
604 | 8); | |
605 | offset += 8; | |
606 | intreg += 2; | |
607 | break; | |
608 | case X86_64_INTEGERSI_CLASS: | |
609 | memcpy (valbuf + offset, | |
610 | regbuf + REGISTER_BYTE (ret_int_r[intreg / 2]), 4); | |
611 | offset += 8; | |
612 | intreg++; | |
613 | break; | |
614 | case X86_64_SSEDF_CLASS: | |
615 | case X86_64_SSESF_CLASS: | |
616 | case X86_64_SSE_CLASS: | |
617 | memcpy (valbuf + offset, | |
618 | regbuf + REGISTER_BYTE (ret_sse_r[(ssereg + 1) / 2]), | |
619 | 8); | |
620 | offset += 8; | |
621 | ssereg += 2; | |
622 | break; | |
623 | case X86_64_SSEUP_CLASS: | |
624 | memcpy (valbuf + offset + 8, | |
625 | regbuf + REGISTER_BYTE (ret_sse_r[ssereg / 2]), 8); | |
626 | offset += 8; | |
627 | ssereg++; | |
628 | break; | |
629 | case X86_64_X87_CLASS: | |
630 | memcpy (valbuf + offset, regbuf + REGISTER_BYTE (FP0_REGNUM), | |
631 | 8); | |
632 | offset += 8; | |
633 | break; | |
634 | case X86_64_X87UP_CLASS: | |
635 | memcpy (valbuf + offset, | |
636 | regbuf + REGISTER_BYTE (FP0_REGNUM) + 8, 8); | |
637 | offset += 8; | |
638 | break; | |
639 | case X86_64_MEMORY_CLASS: | |
640 | default: | |
641 | internal_error (__FILE__, __LINE__, | |
642 | "Unexpected argument class"); | |
643 | } | |
644 | } | |
645 | } | |
646 | } | |
647 | ||
53e95fcf JS |
648 | static void |
649 | x86_64_frame_init_saved_regs (struct frame_info *fi) | |
650 | { | |
26abbdc4 | 651 | /* Do nothing. Everything is handled by the stack unwinding code. */ |
53e95fcf JS |
652 | } |
653 | ||
654 | #define INT_REGS 6 | |
655 | #define SSE_REGS 16 | |
656 | ||
53e95fcf | 657 | CORE_ADDR |
d45fc520 | 658 | x86_64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
53e95fcf JS |
659 | int struct_return, CORE_ADDR struct_addr) |
660 | { | |
661 | int intreg = 0; | |
662 | int ssereg = 0; | |
663 | int i; | |
ce0eebec | 664 | static int int_parameter_registers[INT_REGS] = { |
de220d0f ML |
665 | 5 /* RDI */ , 4 /* RSI */ , |
666 | 3 /* RDX */ , 2 /* RCX */ , | |
91fd20f7 | 667 | 8 /* R8 */ , 9 /* R9 */ |
ce0eebec | 668 | }; |
53e95fcf | 669 | /* XMM0 - XMM15 */ |
ce0eebec | 670 | static int sse_parameter_registers[SSE_REGS] = { |
de220d0f ML |
671 | XMM1_REGNUM - 1, XMM1_REGNUM, XMM1_REGNUM + 1, XMM1_REGNUM + 2, |
672 | XMM1_REGNUM + 3, XMM1_REGNUM + 4, XMM1_REGNUM + 5, XMM1_REGNUM + 6, | |
673 | XMM1_REGNUM + 7, XMM1_REGNUM + 8, XMM1_REGNUM + 9, XMM1_REGNUM + 10, | |
674 | XMM1_REGNUM + 11, XMM1_REGNUM + 12, XMM1_REGNUM + 13, XMM1_REGNUM + 14 | |
ce0eebec AC |
675 | }; |
676 | int stack_values_count = 0; | |
82dbc5f7 | 677 | int *stack_values; |
e9f30c21 | 678 | stack_values = alloca (nargs * sizeof (int)); |
53e95fcf JS |
679 | for (i = 0; i < nargs; i++) |
680 | { | |
681 | enum x86_64_reg_class class[MAX_CLASSES]; | |
682 | int n = classify_argument (args[i]->type, class, 0); | |
683 | int needed_intregs; | |
684 | int needed_sseregs; | |
685 | ||
686 | if (!n || | |
687 | !examine_argument (class, n, &needed_intregs, &needed_sseregs) | |
82dbc5f7 AC |
688 | || intreg / 2 + needed_intregs > INT_REGS |
689 | || ssereg / 2 + needed_sseregs > SSE_REGS) | |
ce0eebec AC |
690 | { /* memory class */ |
691 | stack_values[stack_values_count++] = i; | |
53e95fcf JS |
692 | } |
693 | else | |
694 | { | |
695 | int j; | |
696 | for (j = 0; j < n; j++) | |
697 | { | |
698 | int offset = 0; | |
699 | switch (class[j]) | |
700 | { | |
701 | case X86_64_NO_CLASS: | |
702 | break; | |
703 | case X86_64_INTEGER_CLASS: | |
4caf0990 AC |
704 | deprecated_write_register_gen (int_parameter_registers |
705 | [(intreg + 1) / 2], | |
706 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
707 | offset += 8; |
708 | intreg += 2; | |
709 | break; | |
710 | case X86_64_INTEGERSI_CLASS: | |
4caf0990 AC |
711 | deprecated_write_register_gen (int_parameter_registers[intreg / 2], |
712 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
713 | offset += 8; |
714 | intreg++; | |
715 | break; | |
716 | case X86_64_SSEDF_CLASS: | |
717 | case X86_64_SSESF_CLASS: | |
718 | case X86_64_SSE_CLASS: | |
4caf0990 AC |
719 | deprecated_write_register_gen (sse_parameter_registers |
720 | [(ssereg + 1) / 2], | |
721 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
722 | offset += 8; |
723 | ssereg += 2; | |
724 | break; | |
725 | case X86_64_SSEUP_CLASS: | |
4caf0990 AC |
726 | deprecated_write_register_gen (sse_parameter_registers[ssereg / 2], |
727 | VALUE_CONTENTS_ALL (args[i]) + offset); | |
53e95fcf JS |
728 | offset += 8; |
729 | ssereg++; | |
730 | break; | |
731 | case X86_64_X87_CLASS: | |
53e95fcf | 732 | case X86_64_MEMORY_CLASS: |
ce0eebec | 733 | stack_values[stack_values_count++] = i; |
82dbc5f7 AC |
734 | break; |
735 | case X86_64_X87UP_CLASS: | |
53e95fcf JS |
736 | break; |
737 | default: | |
738 | internal_error (__FILE__, __LINE__, | |
739 | "Unexpected argument class"); | |
740 | } | |
741 | intreg += intreg % 2; | |
742 | ssereg += ssereg % 2; | |
743 | } | |
744 | } | |
745 | } | |
82dbc5f7 AC |
746 | while (--stack_values_count >= 0) |
747 | { | |
e9f30c21 | 748 | struct value *arg = args[stack_values[stack_values_count]]; |
82dbc5f7 AC |
749 | int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg)); |
750 | len += 7; | |
751 | len -= len % 8; | |
752 | sp -= len; | |
753 | write_memory (sp, VALUE_CONTENTS_ALL (arg), len); | |
754 | } | |
53e95fcf JS |
755 | return sp; |
756 | } | |
757 | ||
758 | /* Write into the appropriate registers a function return value stored | |
759 | in VALBUF of type TYPE, given in virtual format. */ | |
760 | void | |
761 | x86_64_store_return_value (struct type *type, char *valbuf) | |
762 | { | |
763 | int len = TYPE_LENGTH (type); | |
764 | ||
765 | if (TYPE_CODE_FLT == TYPE_CODE (type)) | |
766 | { | |
767 | /* Floating-point return values can be found in %st(0). */ | |
768 | if (len == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT | |
769 | && TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext) | |
770 | { | |
771 | /* Copy straight over. */ | |
73937e03 AC |
772 | deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM), valbuf, |
773 | FPU_REG_RAW_SIZE); | |
53e95fcf JS |
774 | } |
775 | else | |
776 | { | |
777 | char buf[FPU_REG_RAW_SIZE]; | |
778 | DOUBLEST val; | |
779 | ||
780 | /* Convert the value found in VALBUF to the extended | |
781 | floating point format used by the FPU. This is probably | |
782 | not exactly how it would happen on the target itself, but | |
783 | it is the best we can do. */ | |
784 | val = extract_floating (valbuf, TYPE_LENGTH (type)); | |
785 | floatformat_from_doublest (&floatformat_i387_ext, &val, buf); | |
73937e03 AC |
786 | deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM), buf, |
787 | FPU_REG_RAW_SIZE); | |
53e95fcf JS |
788 | } |
789 | } | |
790 | else | |
791 | { | |
792 | int low_size = REGISTER_RAW_SIZE (0); | |
793 | int high_size = REGISTER_RAW_SIZE (1); | |
794 | ||
795 | if (len <= low_size) | |
73937e03 | 796 | deprecated_write_register_bytes (REGISTER_BYTE (0), valbuf, len); |
53e95fcf JS |
797 | else if (len <= (low_size + high_size)) |
798 | { | |
73937e03 AC |
799 | deprecated_write_register_bytes (REGISTER_BYTE (0), valbuf, |
800 | low_size); | |
801 | deprecated_write_register_bytes (REGISTER_BYTE (1), | |
802 | valbuf + low_size, len - low_size); | |
53e95fcf JS |
803 | } |
804 | else | |
805 | internal_error (__FILE__, __LINE__, | |
806 | "Cannot store return value of %d bytes long.", len); | |
807 | } | |
808 | } | |
809 | \f | |
810 | ||
1cf877ad ML |
811 | const char * |
812 | x86_64_register_name (int reg_nr) | |
53e95fcf | 813 | { |
de220d0f | 814 | if (reg_nr < 0 || reg_nr >= X86_64_NUM_REGS) |
53e95fcf | 815 | return NULL; |
de220d0f | 816 | return x86_64_register_info_table[reg_nr].name; |
53e95fcf | 817 | } |
8dda9770 ML |
818 | |
819 | int | |
1cf877ad | 820 | x86_64_register_number (const char *name) |
8dda9770 ML |
821 | { |
822 | int reg_nr; | |
823 | ||
824 | for (reg_nr = 0; reg_nr < X86_64_NUM_REGS; reg_nr++) | |
825 | if (strcmp (name, x86_64_register_info_table[reg_nr].name) == 0) | |
826 | return reg_nr; | |
827 | return -1; | |
828 | } | |
53e95fcf JS |
829 | \f |
830 | ||
831 | ||
832 | /* We have two flavours of disassembly. The machinery on this page | |
833 | deals with switching between those. */ | |
834 | ||
835 | static int | |
836 | gdb_print_insn_x86_64 (bfd_vma memaddr, disassemble_info * info) | |
837 | { | |
838 | if (disassembly_flavour == att_flavour) | |
839 | return print_insn_i386_att (memaddr, info); | |
840 | else if (disassembly_flavour == intel_flavour) | |
841 | return print_insn_i386_intel (memaddr, info); | |
842 | /* Never reached -- disassembly_flavour is always either att_flavour | |
843 | or intel_flavour. */ | |
844 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); | |
845 | } | |
846 | \f | |
847 | ||
848 | /* Store the address of the place in which to copy the structure the | |
849 | subroutine will return. This is called from call_function. */ | |
850 | void | |
851 | x86_64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) | |
852 | { | |
853 | write_register (RDI_REGNUM, addr); | |
854 | } | |
855 | ||
856 | int | |
857 | x86_64_frameless_function_invocation (struct frame_info *frame) | |
858 | { | |
859 | return 0; | |
860 | } | |
861 | ||
e76e1718 ML |
862 | /* If a function with debugging information and known beginning |
863 | is detected, we will return pc of the next line in the source | |
864 | code. With this approach we effectively skip the prolog. */ | |
865 | ||
866 | #define PROLOG_BUFSIZE 4 | |
53e95fcf JS |
867 | CORE_ADDR |
868 | x86_64_skip_prologue (CORE_ADDR pc) | |
869 | { | |
482a4d06 | 870 | int i; |
e76e1718 ML |
871 | struct symtab_and_line v_sal; |
872 | struct symbol *v_function; | |
482a4d06 | 873 | CORE_ADDR endaddr; |
26abbdc4 | 874 | unsigned char prolog_buf[PROLOG_BUFSIZE]; |
e76e1718 | 875 | |
26abbdc4 MK |
876 | /* We will handle only functions starting with: */ |
877 | static unsigned char prolog_expect[PROLOG_BUFSIZE] = | |
878 | { | |
879 | 0x55, /* pushq %rbp */ | |
880 | 0x48, 0x89, 0xe5 /* movq %rsp, %rbp */ | |
881 | }; | |
e76e1718 ML |
882 | |
883 | read_memory (pc, (char *) prolog_buf, PROLOG_BUFSIZE); | |
884 | ||
26abbdc4 | 885 | /* First check, whether pc points to pushq %rbp, movq %rsp, %rbp. */ |
b1ab997b | 886 | for (i = 0; i < PROLOG_BUFSIZE; i++) |
b6779aa2 | 887 | if (prolog_expect[i] != prolog_buf[i]) |
26abbdc4 | 888 | return pc; /* ... no, it doesn't. Nothing to skip. */ |
b1ab997b | 889 | |
26abbdc4 | 890 | /* OK, we have found the prologue and want PC of the first |
b1ab997b ML |
891 | non-prologue instruction. */ |
892 | pc += PROLOG_BUFSIZE; | |
e76e1718 ML |
893 | |
894 | v_function = find_pc_function (pc); | |
895 | v_sal = find_pc_line (pc, 0); | |
896 | ||
26abbdc4 MK |
897 | /* If pc doesn't point to a function with debuginfo, some of the |
898 | following may be NULL. */ | |
e76e1718 ML |
899 | if (!v_function || !v_function->ginfo.value.block || !v_sal.symtab) |
900 | return pc; | |
901 | ||
8da065d5 | 902 | endaddr = BLOCK_END (SYMBOL_BLOCK_VALUE (v_function)); |
e76e1718 ML |
903 | |
904 | for (i = 0; i < v_sal.symtab->linetable->nitems; i++) | |
482a4d06 | 905 | if (v_sal.symtab->linetable->item[i].pc >= pc |
e76e1718 ML |
906 | && v_sal.symtab->linetable->item[i].pc < endaddr) |
907 | { | |
908 | pc = v_sal.symtab->linetable->item[i].pc; | |
e76e1718 ML |
909 | break; |
910 | } | |
911 | ||
53e95fcf JS |
912 | return pc; |
913 | } | |
914 | ||
915 | /* Sequence of bytes for breakpoint instruction. */ | |
ab91194c | 916 | static const unsigned char * |
b64bbf8c | 917 | x86_64_breakpoint_from_pc (CORE_ADDR *pc, int *lenptr) |
53e95fcf JS |
918 | { |
919 | static unsigned char breakpoint[] = { 0xcc }; | |
920 | *lenptr = 1; | |
921 | return breakpoint; | |
922 | } | |
923 | ||
0c1a73d6 MK |
924 | static void |
925 | x86_64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
53e95fcf | 926 | { |
0c1a73d6 | 927 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
de220d0f | 928 | int i, sum; |
53e95fcf | 929 | |
b83b026c | 930 | /* The x86-64 has 16 SSE registers. */ |
0c1a73d6 | 931 | tdep->num_xmm_regs = 16; |
53e95fcf | 932 | |
0c1a73d6 | 933 | /* This is what all the fuss is about. */ |
53e95fcf JS |
934 | set_gdbarch_long_bit (gdbarch, 64); |
935 | set_gdbarch_long_long_bit (gdbarch, 64); | |
936 | set_gdbarch_ptr_bit (gdbarch, 64); | |
937 | ||
b83b026c MK |
938 | /* In contrast to the i386, on the x86-64 a `long double' actually |
939 | takes up 128 bits, even though it's still based on the i387 | |
940 | extended floating-point format which has only 80 significant bits. */ | |
941 | set_gdbarch_long_double_bit (gdbarch, 128); | |
942 | ||
53e95fcf | 943 | set_gdbarch_num_regs (gdbarch, X86_64_NUM_REGS); |
b83b026c MK |
944 | |
945 | /* Register numbers of various important registers. */ | |
946 | set_gdbarch_sp_regnum (gdbarch, 7); /* %rsp */ | |
947 | set_gdbarch_fp_regnum (gdbarch, 6); /* %rbp */ | |
948 | set_gdbarch_pc_regnum (gdbarch, 16); /* %rip */ | |
949 | set_gdbarch_ps_regnum (gdbarch, 17); /* %eflags */ | |
950 | set_gdbarch_fp0_regnum (gdbarch, X86_64_NUM_GREGS); /* %st(0) */ | |
951 | ||
952 | /* The "default" register numbering scheme for the x86-64 is | |
953 | referred to as the "DWARF register number mapping" in the psABI. | |
954 | The preferred debugging format for all known x86-64 targets is | |
955 | actually DWARF2, and GCC doesn't seem to support DWARF (that is | |
956 | DWARF-1), but we provide the same mapping just in case. This | |
957 | mapping is also used for stabs, which GCC does support. */ | |
958 | set_gdbarch_stab_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
959 | set_gdbarch_dwarf_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
960 | set_gdbarch_dwarf2_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); | |
961 | ||
962 | /* We don't override SDB_REG_RO_REGNUM, sice COFF doesn't seem to be | |
963 | in use on any of the supported x86-64 targets. */ | |
964 | ||
1cf877ad | 965 | set_gdbarch_register_name (gdbarch, x86_64_register_name); |
53e95fcf | 966 | set_gdbarch_register_size (gdbarch, 8); |
de220d0f | 967 | |
0c1a73d6 MK |
968 | /* Total amount of space needed to store our copies of the machine's |
969 | register (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + | |
970 | SIZEOF_SSE_REGS) */ | |
de220d0f ML |
971 | for (i = 0, sum = 0; i < X86_64_NUM_REGS; i++) |
972 | sum += x86_64_register_info_table[i].size; | |
973 | set_gdbarch_register_bytes (gdbarch, sum); | |
53e95fcf | 974 | |
b83b026c MK |
975 | set_gdbarch_register_raw_size (gdbarch, x86_64_register_raw_size); |
976 | set_gdbarch_register_byte (gdbarch, x86_64_register_byte); | |
53e95fcf JS |
977 | set_gdbarch_register_virtual_type (gdbarch, x86_64_register_virtual_type); |
978 | ||
b83b026c MK |
979 | /* FIXME: kettenis/20021026: As long as we don't support longjmp, |
980 | that is, as long as we have `tdep->jb_pc_offset == -1', using | |
981 | i386_get_longjmp_target is fine. */ | |
982 | ||
53e95fcf JS |
983 | set_gdbarch_register_convertible (gdbarch, x86_64_register_convertible); |
984 | set_gdbarch_register_convert_to_virtual (gdbarch, | |
985 | x86_64_register_convert_to_virtual); | |
986 | set_gdbarch_register_convert_to_raw (gdbarch, | |
987 | x86_64_register_convert_to_raw); | |
988 | ||
b83b026c MK |
989 | /* Getting saved registers is handled by unwind information. */ |
990 | set_gdbarch_get_saved_register (gdbarch, cfi_get_saved_register); | |
53e95fcf | 991 | |
b83b026c | 992 | /* FIXME: kettenis/20021026: Should we set parm_boundary to 64 here? */ |
53e95fcf | 993 | set_gdbarch_read_fp (gdbarch, cfi_read_fp); |
53e95fcf | 994 | |
b83b026c MK |
995 | /* FIXME: kettenis/20021026: Should be undeprecated. */ |
996 | set_gdbarch_extract_return_value (gdbarch, NULL); | |
997 | set_gdbarch_deprecated_extract_return_value (gdbarch, | |
998 | x86_64_extract_return_value); | |
999 | set_gdbarch_push_arguments (gdbarch, x86_64_push_arguments); | |
1000 | set_gdbarch_push_return_address (gdbarch, x86_64_push_return_address); | |
53e95fcf | 1001 | set_gdbarch_pop_frame (gdbarch, x86_64_pop_frame); |
b83b026c MK |
1002 | set_gdbarch_store_struct_return (gdbarch, x86_64_store_struct_return); |
1003 | /* FIXME: kettenis/20021026: Should be undeprecated. */ | |
1004 | set_gdbarch_store_return_value (gdbarch, NULL); | |
1005 | set_gdbarch_deprecated_store_return_value (gdbarch, | |
1006 | x86_64_store_return_value); | |
1007 | /* Override, since this is handled by x86_64_extract_return_value. */ | |
1008 | set_gdbarch_extract_struct_value_address (gdbarch, NULL); | |
1009 | set_gdbarch_use_struct_convention (gdbarch, x86_64_use_struct_convention); | |
53e95fcf JS |
1010 | |
1011 | set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); | |
b83b026c | 1012 | set_gdbarch_skip_prologue (gdbarch, x86_64_skip_prologue); |
53e95fcf | 1013 | |
b83b026c MK |
1014 | set_gdbarch_frame_chain (gdbarch, x86_64_linux_frame_chain); |
1015 | set_gdbarch_frameless_function_invocation (gdbarch, | |
1016 | x86_64_frameless_function_invocation); | |
ab91194c MK |
1017 | /* FIXME: kettenis/20021025: Shouldn't this be set to |
1018 | generic_file_frame_chain_valid? */ | |
baed091b | 1019 | set_gdbarch_frame_chain_valid (gdbarch, file_frame_chain_valid); |
b83b026c MK |
1020 | /* FIXME: kettenis/20021026: These two are GNU/Linux-specific and |
1021 | should be moved elsewhere. */ | |
1022 | set_gdbarch_frame_saved_pc (gdbarch, x86_64_linux_frame_saved_pc); | |
1023 | set_gdbarch_saved_pc_after_call (gdbarch, x86_64_linux_saved_pc_after_call); | |
53e95fcf | 1024 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); |
b83b026c MK |
1025 | /* FIXME: kettenis/20021026: This one is GNU/Linux-specific too. */ |
1026 | set_gdbarch_pc_in_sigtramp (gdbarch, x86_64_linux_in_sigtramp); | |
53e95fcf | 1027 | |
b83b026c MK |
1028 | /* Build call frame information (CFI) from DWARF2 frame debug info. */ |
1029 | set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info); | |
53e95fcf | 1030 | |
b83b026c | 1031 | /* Initialization of per-frame CFI. */ |
e3033f15 | 1032 | set_gdbarch_init_extra_frame_info (gdbarch, cfi_init_extra_frame_info); |
53e95fcf | 1033 | |
b83b026c MK |
1034 | /* Frame PC initialization is handled by using CFI. */ |
1035 | set_gdbarch_init_frame_pc (gdbarch, x86_64_init_frame_pc); | |
53e95fcf | 1036 | |
b83b026c MK |
1037 | /* Cons up virtual frame pointer for trace. */ |
1038 | set_gdbarch_virtual_frame_pointer (gdbarch, cfi_virtual_frame_pointer); | |
53e95fcf | 1039 | |
b83b026c MK |
1040 | /* FIXME: kettenis/20021026: This is ELF-specific. Fine for now, |
1041 | since all supported x86-64 targets are ELF, but that might change | |
1042 | in the future. */ | |
8a8ab2b9 | 1043 | set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section); |
0c1a73d6 MK |
1044 | } |
1045 | ||
1046 | static struct gdbarch * | |
1047 | x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
1048 | { | |
1049 | struct gdbarch_tdep *tdep; | |
1050 | struct gdbarch *gdbarch; | |
1051 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; | |
1052 | ||
1053 | /* Try to determine the OS ABI of the object we're loading. */ | |
1054 | if (info.abfd != NULL) | |
1055 | osabi = gdbarch_lookup_osabi (info.abfd); | |
1056 | ||
1057 | /* Find a candidate among extant architectures. */ | |
1058 | for (arches = gdbarch_list_lookup_by_info (arches, &info); | |
1059 | arches != NULL; | |
1060 | arches = gdbarch_list_lookup_by_info (arches->next, &info)) | |
1061 | { | |
1062 | /* Make sure the OS ABI selection matches. */ | |
1063 | tdep = gdbarch_tdep (arches->gdbarch); | |
1064 | if (tdep && tdep->osabi == osabi) | |
1065 | return arches->gdbarch; | |
1066 | } | |
1067 | ||
1068 | /* Allocate space for the new architecture. */ | |
1069 | tdep = XMALLOC (struct gdbarch_tdep); | |
1070 | gdbarch = gdbarch_alloc (&info, tdep); | |
1071 | ||
1072 | tdep->osabi = osabi; | |
1073 | ||
ab91194c MK |
1074 | /* FIXME: kettenis/20021025: The following calls are going to |
1075 | disappear when we integrate the x86_64 target into the i386 | |
1076 | target. */ | |
1077 | ||
1078 | set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext); | |
1079 | ||
1080 | set_gdbarch_max_register_raw_size (gdbarch, 16); | |
1081 | set_gdbarch_max_register_virtual_size (gdbarch, 16); | |
1082 | ||
1083 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
1084 | ||
1085 | set_gdbarch_breakpoint_from_pc (gdbarch, x86_64_breakpoint_from_pc); | |
1086 | set_gdbarch_decr_pc_after_break (gdbarch, 1); | |
1087 | set_gdbarch_function_start_offset (gdbarch, 0); | |
1088 | ||
1089 | set_gdbarch_frame_args_skip (gdbarch, 8); | |
1090 | set_gdbarch_frame_args_address (gdbarch, default_frame_address); | |
1091 | set_gdbarch_frame_locals_address (gdbarch, default_frame_address); | |
1092 | ||
1093 | set_gdbarch_use_generic_dummy_frames (gdbarch, 1); | |
1094 | ||
1095 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); | |
1096 | set_gdbarch_call_dummy_address (gdbarch, entry_point_address); | |
1097 | set_gdbarch_call_dummy_start_offset (gdbarch, 0); | |
1098 | set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); | |
1099 | set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); | |
1100 | set_gdbarch_call_dummy_length (gdbarch, 0); | |
1101 | set_gdbarch_call_dummy_p (gdbarch, 1); | |
1102 | set_gdbarch_call_dummy_words (gdbarch, NULL); | |
1103 | set_gdbarch_sizeof_call_dummy_words (gdbarch, 0); | |
1104 | set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); | |
1105 | set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); | |
1106 | ||
1107 | set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point); | |
1108 | ||
1109 | set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); | |
1110 | ||
1111 | /* FIXME: kettenis/20021025: These already are the default. */ | |
1112 | ||
1113 | set_gdbarch_register_virtual_size (gdbarch, generic_register_size); | |
1114 | set_gdbarch_deprecated_extract_struct_value_address (gdbarch, 0); | |
1115 | ||
0c1a73d6 | 1116 | x86_64_init_abi (info, gdbarch); |
baed091b | 1117 | |
53e95fcf JS |
1118 | return gdbarch; |
1119 | } | |
1120 | ||
1121 | void | |
1122 | _initialize_x86_64_tdep (void) | |
1123 | { | |
0e04a514 | 1124 | register_gdbarch_init (bfd_arch_i386, x86_64_gdbarch_init); |
53e95fcf JS |
1125 | |
1126 | /* Initialize the table saying where each register starts in the | |
1127 | register file. */ | |
1128 | { | |
1129 | int i, offset; | |
1130 | ||
1131 | offset = 0; | |
1132 | for (i = 0; i < X86_64_NUM_REGS; i++) | |
1133 | { | |
1134 | x86_64_register_byte_table[i] = offset; | |
de220d0f | 1135 | offset += x86_64_register_info_table[i].size; |
53e95fcf JS |
1136 | } |
1137 | } | |
1138 | ||
1139 | tm_print_insn = gdb_print_insn_x86_64; | |
ecd1107e | 1140 | tm_print_insn_info.mach = bfd_mach_x86_64; |
53e95fcf JS |
1141 | |
1142 | /* Add the variable that controls the disassembly flavour. */ | |
1143 | { | |
1144 | struct cmd_list_element *new_cmd; | |
1145 | ||
1146 | new_cmd = add_set_enum_cmd ("disassembly-flavour", no_class, | |
1147 | valid_flavours, &disassembly_flavour, "\ | |
1148 | Set the disassembly flavour, the valid values are \"att\" and \"intel\", \ | |
1149 | and the default value is \"att\".", &setlist); | |
1150 | add_show_from_set (new_cmd, &showlist); | |
1151 | } | |
1152 | } |