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a80b95ba | 1 | /* Darwin support for GDB, the GNU debugger. |
0fb0cc75 | 2 | Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2008, 2009 |
a80b95ba TG |
3 | Free Software Foundation, Inc. |
4 | ||
5 | Contributed by Apple Computer, Inc. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "frame.h" | |
24 | #include "inferior.h" | |
25 | #include "target.h" | |
26 | #include "symfile.h" | |
27 | #include "symtab.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "regcache.h" | |
31 | #include "gdb_assert.h" | |
32 | #include "i386-tdep.h" | |
a80b95ba TG |
33 | #include "i387-tdep.h" |
34 | #include "gdbarch.h" | |
35 | #include "arch-utils.h" | |
acdb24a9 | 36 | #include "gdbcore.h" |
a80b95ba TG |
37 | |
38 | #include "darwin-nat.h" | |
39 | #include "i386-darwin-tdep.h" | |
40 | ||
5cd226f2 TG |
41 | #ifdef BFD64 |
42 | #include "amd64-nat.h" | |
43 | #include "amd64-darwin-tdep.h" | |
44 | #endif | |
45 | ||
a80b95ba TG |
46 | /* Read register values from the inferior process. |
47 | If REGNO is -1, do this for all registers. | |
48 | Otherwise, REGNO specifies which register (so we can save time). */ | |
49 | static void | |
28439f5e PA |
50 | i386_darwin_fetch_inferior_registers (struct target_ops *ops, |
51 | struct regcache *regcache, int regno) | |
a80b95ba TG |
52 | { |
53 | thread_t current_thread = ptid_get_tid (inferior_ptid); | |
54 | int fetched = 0; | |
55 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
56 | ||
5cd226f2 | 57 | #ifdef BFD64 |
a80b95ba TG |
58 | if (gdbarch_ptr_bit (gdbarch) == 64) |
59 | { | |
60 | if (regno == -1 || amd64_native_gregset_supplies_p (gdbarch, regno)) | |
61 | { | |
62 | x86_thread_state_t gp_regs; | |
63 | unsigned int gp_count = x86_THREAD_STATE_COUNT; | |
64 | kern_return_t ret; | |
65 | ||
66 | ret = thread_get_state | |
67 | (current_thread, x86_THREAD_STATE, (thread_state_t) & gp_regs, | |
68 | &gp_count); | |
69 | if (ret != KERN_SUCCESS) | |
70 | { | |
71 | printf_unfiltered (_("Error calling thread_get_state for GP registers for thread 0x%ulx"), current_thread); | |
72 | MACH_CHECK_ERROR (ret); | |
73 | } | |
74 | amd64_supply_native_gregset (regcache, &gp_regs.uts, -1); | |
75 | fetched++; | |
76 | } | |
77 | ||
78 | if (regno == -1 || !amd64_native_gregset_supplies_p (gdbarch, regno)) | |
79 | { | |
80 | x86_float_state_t fp_regs; | |
81 | unsigned int fp_count = x86_FLOAT_STATE_COUNT; | |
82 | kern_return_t ret; | |
83 | ||
84 | ret = thread_get_state | |
85 | (current_thread, x86_FLOAT_STATE, (thread_state_t) & fp_regs, | |
86 | &fp_count); | |
87 | if (ret != KERN_SUCCESS) | |
88 | { | |
89 | printf_unfiltered (_("Error calling thread_get_state for float registers for thread 0x%ulx"), current_thread); | |
90 | MACH_CHECK_ERROR (ret); | |
91 | } | |
92 | i387_supply_fxsave (regcache, -1, &fp_regs.ufs.fs64); | |
93 | fetched++; | |
94 | } | |
95 | } | |
96 | else | |
5cd226f2 | 97 | #endif |
a80b95ba TG |
98 | { |
99 | if (regno == -1 || regno < I386_NUM_GREGS) | |
100 | { | |
101 | i386_thread_state_t gp_regs; | |
102 | unsigned int gp_count = i386_THREAD_STATE_COUNT; | |
103 | kern_return_t ret; | |
104 | int i; | |
105 | ||
106 | ret = thread_get_state | |
107 | (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs, | |
108 | &gp_count); | |
109 | if (ret != KERN_SUCCESS) | |
110 | { | |
111 | printf_unfiltered (_("Error calling thread_get_state for GP registers for thread 0x%ulx"), current_thread); | |
112 | MACH_CHECK_ERROR (ret); | |
113 | } | |
114 | for (i = 0; i < I386_NUM_GREGS; i++) | |
115 | regcache_raw_supply | |
116 | (regcache, i, | |
117 | (char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]); | |
118 | ||
119 | fetched++; | |
120 | } | |
121 | ||
122 | if (regno == -1 | |
123 | || (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS)) | |
124 | { | |
125 | i386_float_state_t fp_regs; | |
126 | unsigned int fp_count = i386_FLOAT_STATE_COUNT; | |
127 | kern_return_t ret; | |
128 | ||
129 | ret = thread_get_state | |
130 | (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs, | |
131 | &fp_count); | |
132 | if (ret != KERN_SUCCESS) | |
133 | { | |
134 | printf_unfiltered (_("Error calling thread_get_state for float registers for thread 0x%ulx"), current_thread); | |
135 | MACH_CHECK_ERROR (ret); | |
136 | } | |
137 | i387_supply_fxsave (regcache, -1, &fp_regs.__fpu_fcw); | |
138 | fetched++; | |
139 | } | |
140 | } | |
141 | ||
142 | if (! fetched) | |
143 | { | |
144 | warning (_("unknown register %d"), regno); | |
145 | regcache_raw_supply (regcache, regno, NULL); | |
146 | } | |
147 | } | |
148 | ||
149 | /* Store our register values back into the inferior. | |
150 | If REGNO is -1, do this for all registers. | |
151 | Otherwise, REGNO specifies which register (so we can save time). */ | |
152 | ||
153 | static void | |
28439f5e PA |
154 | i386_darwin_store_inferior_registers (struct target_ops *ops, |
155 | struct regcache *regcache, int regno) | |
a80b95ba TG |
156 | { |
157 | thread_t current_thread = ptid_get_tid (inferior_ptid); | |
158 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
159 | ||
5cd226f2 | 160 | #ifdef BFD64 |
a80b95ba TG |
161 | if (gdbarch_ptr_bit (gdbarch) == 64) |
162 | { | |
163 | if (regno == -1 || amd64_native_gregset_supplies_p (gdbarch, regno)) | |
164 | { | |
165 | x86_thread_state_t gp_regs; | |
166 | kern_return_t ret; | |
167 | unsigned int gp_count = x86_THREAD_STATE_COUNT; | |
168 | ||
169 | ret = thread_get_state | |
170 | (current_thread, x86_THREAD_STATE, (thread_state_t) &gp_regs, | |
171 | &gp_count); | |
172 | MACH_CHECK_ERROR (ret); | |
173 | gdb_assert (gp_regs.tsh.flavor == x86_THREAD_STATE64); | |
174 | gdb_assert (gp_regs.tsh.count == x86_THREAD_STATE64_COUNT); | |
175 | ||
176 | amd64_collect_native_gregset (regcache, &gp_regs.uts, regno); | |
177 | ||
178 | ret = thread_set_state (current_thread, x86_THREAD_STATE, | |
179 | (thread_state_t) &gp_regs, | |
180 | x86_THREAD_STATE_COUNT); | |
181 | MACH_CHECK_ERROR (ret); | |
182 | } | |
183 | ||
184 | if (regno == -1 || !amd64_native_gregset_supplies_p (gdbarch, regno)) | |
185 | { | |
186 | x86_float_state_t fp_regs; | |
187 | kern_return_t ret; | |
188 | unsigned int fp_count = x86_FLOAT_STATE_COUNT; | |
189 | ||
190 | ret = thread_get_state | |
191 | (current_thread, x86_FLOAT_STATE, (thread_state_t) & fp_regs, | |
192 | &fp_count); | |
193 | MACH_CHECK_ERROR (ret); | |
194 | gdb_assert (fp_regs.fsh.flavor == x86_FLOAT_STATE64); | |
195 | gdb_assert (fp_regs.fsh.count == x86_FLOAT_STATE64_COUNT); | |
196 | ||
197 | i387_collect_fxsave (regcache, regno, &fp_regs.ufs.fs64.__fpu_fcw); | |
198 | ||
199 | ret = thread_set_state (current_thread, x86_FLOAT_STATE, | |
200 | (thread_state_t) & fp_regs, | |
201 | x86_FLOAT_STATE_COUNT); | |
202 | MACH_CHECK_ERROR (ret); | |
203 | } | |
204 | } | |
205 | else | |
5cd226f2 | 206 | #endif |
a80b95ba TG |
207 | { |
208 | if (regno == -1 || regno < I386_NUM_GREGS) | |
209 | { | |
210 | i386_thread_state_t gp_regs; | |
211 | kern_return_t ret; | |
212 | unsigned int gp_count = i386_THREAD_STATE_COUNT; | |
213 | int i; | |
214 | ||
215 | ret = thread_get_state | |
216 | (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs, | |
217 | &gp_count); | |
218 | MACH_CHECK_ERROR (ret); | |
219 | ||
220 | for (i = 0; i < I386_NUM_GREGS; i++) | |
221 | if (regno == -1 || regno == i) | |
222 | regcache_raw_collect | |
223 | (regcache, i, | |
224 | (char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]); | |
225 | ||
226 | ret = thread_set_state (current_thread, i386_THREAD_STATE, | |
227 | (thread_state_t) & gp_regs, | |
228 | i386_THREAD_STATE_COUNT); | |
229 | MACH_CHECK_ERROR (ret); | |
230 | } | |
231 | ||
232 | if (regno == -1 | |
233 | || (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS)) | |
234 | { | |
235 | i386_float_state_t fp_regs; | |
236 | unsigned int fp_count = i386_FLOAT_STATE_COUNT; | |
237 | kern_return_t ret; | |
238 | ||
239 | ret = thread_get_state | |
240 | (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs, | |
241 | &fp_count); | |
242 | MACH_CHECK_ERROR (ret); | |
243 | ||
244 | i387_collect_fxsave (regcache, regno, &fp_regs.__fpu_fcw); | |
245 | ||
246 | ret = thread_set_state (current_thread, i386_FLOAT_STATE, | |
247 | (thread_state_t) & fp_regs, | |
248 | i386_FLOAT_STATE_COUNT); | |
249 | MACH_CHECK_ERROR (ret); | |
250 | } | |
251 | } | |
252 | } | |
253 | ||
254 | ||
255 | /* Support for debug registers, boosted mostly from i386-linux-nat.c. */ | |
256 | ||
257 | #ifndef DR_FIRSTADDR | |
258 | #define DR_FIRSTADDR 0 | |
259 | #endif | |
260 | ||
261 | #ifndef DR_LASTADDR | |
262 | #define DR_LASTADDR 3 | |
263 | #endif | |
264 | ||
265 | #ifndef DR_STATUS | |
266 | #define DR_STATUS 6 | |
267 | #endif | |
268 | ||
269 | #ifndef DR_CONTROL | |
270 | #define DR_CONTROL 7 | |
271 | #endif | |
272 | ||
273 | ||
274 | static void | |
275 | i386_darwin_dr_set (int regnum, uint32_t value) | |
276 | { | |
277 | int current_pid; | |
278 | thread_t current_thread; | |
279 | x86_debug_state_t dr_regs; | |
280 | kern_return_t ret; | |
281 | unsigned int dr_count = x86_DEBUG_STATE_COUNT; | |
282 | ||
283 | gdb_assert (regnum >= 0 && regnum <= DR_CONTROL); | |
284 | ||
285 | current_thread = ptid_get_tid (inferior_ptid); | |
286 | ||
287 | dr_regs.dsh.flavor = x86_DEBUG_STATE32; | |
288 | dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT; | |
289 | dr_count = x86_DEBUG_STATE_COUNT; | |
290 | ret = thread_get_state (current_thread, x86_DEBUG_STATE, | |
291 | (thread_state_t) &dr_regs, &dr_count); | |
292 | ||
293 | if (ret != KERN_SUCCESS) | |
294 | { | |
295 | printf_unfiltered (_("Error reading debug registers thread 0x%x via thread_get_state\n"), (int) current_thread); | |
296 | MACH_CHECK_ERROR (ret); | |
297 | } | |
298 | ||
299 | switch (regnum) | |
300 | { | |
301 | case 0: | |
302 | dr_regs.uds.ds32.__dr0 = value; | |
303 | break; | |
304 | case 1: | |
305 | dr_regs.uds.ds32.__dr1 = value; | |
306 | break; | |
307 | case 2: | |
308 | dr_regs.uds.ds32.__dr2 = value; | |
309 | break; | |
310 | case 3: | |
311 | dr_regs.uds.ds32.__dr3 = value; | |
312 | break; | |
313 | case 4: | |
314 | dr_regs.uds.ds32.__dr4 = value; | |
315 | break; | |
316 | case 5: | |
317 | dr_regs.uds.ds32.__dr5 = value; | |
318 | break; | |
319 | case 6: | |
320 | dr_regs.uds.ds32.__dr6 = value; | |
321 | break; | |
322 | case 7: | |
323 | dr_regs.uds.ds32.__dr7 = value; | |
324 | break; | |
325 | } | |
326 | ||
327 | ret = thread_set_state (current_thread, x86_DEBUG_STATE, | |
328 | (thread_state_t) &dr_regs, dr_count); | |
329 | ||
330 | if (ret != KERN_SUCCESS) | |
331 | { | |
332 | printf_unfiltered (_("Error writing debug registers thread 0x%x via thread_get_state\n"), (int) current_thread); | |
333 | MACH_CHECK_ERROR (ret); | |
334 | } | |
335 | } | |
336 | ||
337 | static uint32_t | |
338 | i386_darwin_dr_get (int regnum) | |
339 | { | |
340 | thread_t current_thread; | |
341 | x86_debug_state_t dr_regs; | |
342 | kern_return_t ret; | |
343 | unsigned int dr_count = x86_DEBUG_STATE_COUNT; | |
344 | ||
345 | gdb_assert (regnum >= 0 && regnum <= DR_CONTROL); | |
346 | ||
347 | current_thread = ptid_get_tid (inferior_ptid); | |
348 | ||
349 | dr_regs.dsh.flavor = x86_DEBUG_STATE32; | |
350 | dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT; | |
351 | dr_count = x86_DEBUG_STATE_COUNT; | |
352 | ret = thread_get_state (current_thread, x86_DEBUG_STATE, | |
353 | (thread_state_t) &dr_regs, &dr_count); | |
354 | ||
355 | if (ret != KERN_SUCCESS) | |
356 | { | |
357 | printf_unfiltered (_("Error reading debug registers thread 0x%x via thread_get_state\n"), (int) current_thread); | |
358 | MACH_CHECK_ERROR (ret); | |
359 | } | |
360 | ||
361 | switch (regnum) | |
362 | { | |
363 | case 0: | |
364 | return dr_regs.uds.ds32.__dr0; | |
365 | case 1: | |
366 | return dr_regs.uds.ds32.__dr1; | |
367 | case 2: | |
368 | return dr_regs.uds.ds32.__dr2; | |
369 | case 3: | |
370 | return dr_regs.uds.ds32.__dr3; | |
371 | case 4: | |
372 | return dr_regs.uds.ds32.__dr4; | |
373 | case 5: | |
374 | return dr_regs.uds.ds32.__dr5; | |
375 | case 6: | |
376 | return dr_regs.uds.ds32.__dr6; | |
377 | case 7: | |
378 | return dr_regs.uds.ds32.__dr7; | |
379 | default: | |
380 | return -1; | |
381 | } | |
382 | } | |
383 | ||
384 | void | |
385 | i386_darwin_dr_set_control (unsigned long control) | |
386 | { | |
387 | i386_darwin_dr_set (DR_CONTROL, control); | |
388 | } | |
389 | ||
390 | void | |
391 | i386_darwin_dr_set_addr (int regnum, CORE_ADDR addr) | |
392 | { | |
393 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); | |
394 | ||
395 | i386_darwin_dr_set (DR_FIRSTADDR + regnum, addr); | |
396 | } | |
397 | ||
398 | void | |
399 | i386_darwin_dr_reset_addr (int regnum) | |
400 | { | |
401 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); | |
402 | ||
403 | i386_darwin_dr_set (DR_FIRSTADDR + regnum, 0L); | |
404 | } | |
405 | ||
406 | unsigned long | |
407 | i386_darwin_dr_get_status (void) | |
408 | { | |
409 | return i386_darwin_dr_get (DR_STATUS); | |
410 | } | |
411 | ||
412 | void | |
413 | darwin_check_osabi (darwin_inferior *inf, thread_t thread) | |
414 | { | |
a97b0ac8 | 415 | if (gdbarch_osabi (target_gdbarch) == GDB_OSABI_UNKNOWN) |
a80b95ba TG |
416 | { |
417 | /* Attaching to a process. Let's figure out what kind it is. */ | |
418 | x86_thread_state_t gp_regs; | |
419 | struct gdbarch_info info; | |
420 | unsigned int gp_count = x86_THREAD_STATE_COUNT; | |
421 | kern_return_t ret; | |
422 | ||
423 | ret = thread_get_state (thread, x86_THREAD_STATE, | |
424 | (thread_state_t) &gp_regs, &gp_count); | |
425 | if (ret != KERN_SUCCESS) | |
426 | { | |
427 | MACH_CHECK_ERROR (ret); | |
428 | return; | |
429 | } | |
430 | ||
431 | gdbarch_info_init (&info); | |
432 | gdbarch_info_fill (&info); | |
a97b0ac8 | 433 | info.byte_order = gdbarch_byte_order (target_gdbarch); |
a80b95ba TG |
434 | info.osabi = GDB_OSABI_DARWIN; |
435 | if (gp_regs.tsh.flavor == x86_THREAD_STATE64) | |
436 | info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386, | |
437 | bfd_mach_x86_64); | |
438 | else | |
439 | info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386, | |
440 | bfd_mach_i386_i386); | |
441 | gdbarch_update_p (info); | |
442 | } | |
443 | } | |
444 | ||
445 | #define X86_EFLAGS_T 0x100UL | |
446 | ||
acdb24a9 TG |
447 | /* Returning from a signal trampoline is done by calling a |
448 | special system call (sigreturn). This system call | |
449 | restores the registers that were saved when the signal was | |
450 | raised, including %eflags/%rflags. That means that single-stepping | |
451 | won't work. Instead, we'll have to modify the signal context | |
452 | that's about to be restored, and set the trace flag there. */ | |
453 | ||
454 | static int | |
455 | i386_darwin_sstep_at_sigreturn (x86_thread_state_t *regs) | |
456 | { | |
e17a4113 | 457 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
acdb24a9 TG |
458 | static const gdb_byte darwin_syscall[] = { 0xcd, 0x80 }; /* int 0x80 */ |
459 | gdb_byte buf[sizeof (darwin_syscall)]; | |
460 | ||
461 | /* Check if PC is at a sigreturn system call. */ | |
462 | if (target_read_memory (regs->uts.ts32.__eip, buf, sizeof (buf)) == 0 | |
463 | && memcmp (buf, darwin_syscall, sizeof (darwin_syscall)) == 0 | |
464 | && regs->uts.ts32.__eax == 0xb8 /* SYS_sigreturn */) | |
465 | { | |
466 | ULONGEST uctx_addr; | |
467 | ULONGEST mctx_addr; | |
468 | ULONGEST flags_addr; | |
469 | unsigned int eflags; | |
470 | ||
e17a4113 UW |
471 | uctx_addr = read_memory_unsigned_integer |
472 | (regs->uts.ts32.__esp + 4, 4, byte_order); | |
473 | mctx_addr = read_memory_unsigned_integer | |
474 | (uctx_addr + 28, 4, byte_order); | |
acdb24a9 TG |
475 | |
476 | flags_addr = mctx_addr + 12 + 9 * 4; | |
477 | read_memory (flags_addr, (gdb_byte *) &eflags, 4); | |
478 | eflags |= X86_EFLAGS_T; | |
479 | write_memory (flags_addr, (gdb_byte *) &eflags, 4); | |
480 | ||
481 | return 1; | |
482 | } | |
483 | return 0; | |
484 | } | |
485 | ||
5cd226f2 | 486 | #ifdef BFD64 |
acdb24a9 TG |
487 | static int |
488 | amd64_darwin_sstep_at_sigreturn (x86_thread_state_t *regs) | |
489 | { | |
e17a4113 | 490 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
acdb24a9 TG |
491 | static const gdb_byte darwin_syscall[] = { 0x0f, 0x05 }; /* syscall */ |
492 | gdb_byte buf[sizeof (darwin_syscall)]; | |
493 | ||
494 | /* Check if PC is at a sigreturn system call. */ | |
495 | if (target_read_memory (regs->uts.ts64.__rip, buf, sizeof (buf)) == 0 | |
496 | && memcmp (buf, darwin_syscall, sizeof (darwin_syscall)) == 0 | |
497 | && (regs->uts.ts64.__rax & 0xffffffff) == 0x20000b8 /* SYS_sigreturn */) | |
498 | { | |
499 | ULONGEST mctx_addr; | |
500 | ULONGEST flags_addr; | |
501 | unsigned int rflags; | |
502 | ||
e17a4113 UW |
503 | mctx_addr = read_memory_unsigned_integer |
504 | (regs->uts.ts64.__rdi + 48, 8, byte_order); | |
acdb24a9 TG |
505 | flags_addr = mctx_addr + 16 + 17 * 8; |
506 | ||
507 | /* AMD64 is little endian. */ | |
508 | read_memory (flags_addr, (gdb_byte *) &rflags, 4); | |
509 | rflags |= X86_EFLAGS_T; | |
510 | write_memory (flags_addr, (gdb_byte *) &rflags, 4); | |
511 | ||
512 | return 1; | |
513 | } | |
514 | return 0; | |
515 | } | |
5cd226f2 | 516 | #endif |
acdb24a9 | 517 | |
a80b95ba TG |
518 | void |
519 | darwin_set_sstep (thread_t thread, int enable) | |
520 | { | |
521 | x86_thread_state_t regs; | |
522 | unsigned int count = x86_THREAD_STATE_COUNT; | |
523 | kern_return_t kret; | |
524 | ||
525 | kret = thread_get_state (thread, x86_THREAD_STATE, | |
526 | (thread_state_t) ®s, &count); | |
527 | if (kret != KERN_SUCCESS) | |
528 | { | |
529 | printf_unfiltered (_("darwin_set_sstep: error %x, thread=%x\n"), | |
530 | kret, thread); | |
531 | return; | |
532 | } | |
acdb24a9 | 533 | |
a80b95ba TG |
534 | switch (regs.tsh.flavor) |
535 | { | |
536 | case x86_THREAD_STATE32: | |
537 | { | |
538 | __uint32_t bit = enable ? X86_EFLAGS_T : 0; | |
539 | ||
acdb24a9 TG |
540 | if (enable && i386_darwin_sstep_at_sigreturn (®s)) |
541 | return; | |
a80b95ba TG |
542 | if ((regs.uts.ts32.__eflags & X86_EFLAGS_T) == bit) |
543 | return; | |
544 | regs.uts.ts32.__eflags = (regs.uts.ts32.__eflags & ~X86_EFLAGS_T) | bit; | |
545 | kret = thread_set_state (thread, x86_THREAD_STATE, | |
546 | (thread_state_t) ®s, count); | |
547 | MACH_CHECK_ERROR (kret); | |
548 | } | |
549 | break; | |
5cd226f2 | 550 | #ifdef BFD64 |
a80b95ba TG |
551 | case x86_THREAD_STATE64: |
552 | { | |
553 | __uint64_t bit = enable ? X86_EFLAGS_T : 0; | |
554 | ||
acdb24a9 TG |
555 | if (enable && amd64_darwin_sstep_at_sigreturn (®s)) |
556 | return; | |
a80b95ba TG |
557 | if ((regs.uts.ts64.__rflags & X86_EFLAGS_T) == bit) |
558 | return; | |
559 | regs.uts.ts64.__rflags = (regs.uts.ts64.__rflags & ~X86_EFLAGS_T) | bit; | |
560 | kret = thread_set_state (thread, x86_THREAD_STATE, | |
561 | (thread_state_t) ®s, count); | |
562 | MACH_CHECK_ERROR (kret); | |
563 | } | |
564 | break; | |
5cd226f2 | 565 | #endif |
a80b95ba TG |
566 | default: |
567 | error (_("darwin_set_sstep: unknown flavour: %d\n"), regs.tsh.flavor); | |
568 | } | |
569 | } | |
570 | ||
571 | void | |
572 | darwin_complete_target (struct target_ops *target) | |
573 | { | |
5cd226f2 | 574 | #ifdef BFD64 |
a80b95ba TG |
575 | amd64_native_gregset64_reg_offset = amd64_darwin_thread_state_reg_offset; |
576 | amd64_native_gregset64_num_regs = amd64_darwin_thread_state_num_regs; | |
577 | amd64_native_gregset32_reg_offset = i386_darwin_thread_state_reg_offset; | |
578 | amd64_native_gregset32_num_regs = i386_darwin_thread_state_num_regs; | |
5cd226f2 | 579 | #endif |
a80b95ba TG |
580 | |
581 | target->to_fetch_registers = i386_darwin_fetch_inferior_registers; | |
582 | target->to_store_registers = i386_darwin_store_inferior_registers; | |
583 | } |