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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" | |
46187dff | 43 | #include "amd64-tdep.h" |
5cd226f2 TG |
44 | #include "amd64-darwin-tdep.h" |
45 | #endif | |
46 | ||
a80b95ba TG |
47 | /* Read register values from the inferior process. |
48 | If REGNO is -1, do this for all registers. | |
49 | Otherwise, REGNO specifies which register (so we can save time). */ | |
50 | static void | |
28439f5e PA |
51 | i386_darwin_fetch_inferior_registers (struct target_ops *ops, |
52 | struct regcache *regcache, int regno) | |
a80b95ba TG |
53 | { |
54 | thread_t current_thread = ptid_get_tid (inferior_ptid); | |
55 | int fetched = 0; | |
56 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
57 | ||
5cd226f2 | 58 | #ifdef BFD64 |
a80b95ba TG |
59 | if (gdbarch_ptr_bit (gdbarch) == 64) |
60 | { | |
61 | if (regno == -1 || amd64_native_gregset_supplies_p (gdbarch, regno)) | |
62 | { | |
63 | x86_thread_state_t gp_regs; | |
64 | unsigned int gp_count = x86_THREAD_STATE_COUNT; | |
65 | kern_return_t ret; | |
66 | ||
67 | ret = thread_get_state | |
68 | (current_thread, x86_THREAD_STATE, (thread_state_t) & gp_regs, | |
69 | &gp_count); | |
70 | if (ret != KERN_SUCCESS) | |
71 | { | |
72 | printf_unfiltered (_("Error calling thread_get_state for GP registers for thread 0x%ulx"), current_thread); | |
73 | MACH_CHECK_ERROR (ret); | |
74 | } | |
75 | amd64_supply_native_gregset (regcache, &gp_regs.uts, -1); | |
76 | fetched++; | |
77 | } | |
78 | ||
79 | if (regno == -1 || !amd64_native_gregset_supplies_p (gdbarch, regno)) | |
80 | { | |
81 | x86_float_state_t fp_regs; | |
82 | unsigned int fp_count = x86_FLOAT_STATE_COUNT; | |
83 | kern_return_t ret; | |
84 | ||
85 | ret = thread_get_state | |
86 | (current_thread, x86_FLOAT_STATE, (thread_state_t) & fp_regs, | |
87 | &fp_count); | |
88 | if (ret != KERN_SUCCESS) | |
89 | { | |
90 | printf_unfiltered (_("Error calling thread_get_state for float registers for thread 0x%ulx"), current_thread); | |
91 | MACH_CHECK_ERROR (ret); | |
92 | } | |
46187dff | 93 | amd64_supply_fxsave (regcache, -1, &fp_regs.ufs.fs64.__fpu_fcw); |
a80b95ba TG |
94 | fetched++; |
95 | } | |
96 | } | |
97 | else | |
5cd226f2 | 98 | #endif |
a80b95ba TG |
99 | { |
100 | if (regno == -1 || regno < I386_NUM_GREGS) | |
101 | { | |
102 | i386_thread_state_t gp_regs; | |
103 | unsigned int gp_count = i386_THREAD_STATE_COUNT; | |
104 | kern_return_t ret; | |
105 | int i; | |
106 | ||
107 | ret = thread_get_state | |
108 | (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs, | |
109 | &gp_count); | |
110 | if (ret != KERN_SUCCESS) | |
111 | { | |
112 | printf_unfiltered (_("Error calling thread_get_state for GP registers for thread 0x%ulx"), current_thread); | |
113 | MACH_CHECK_ERROR (ret); | |
114 | } | |
115 | for (i = 0; i < I386_NUM_GREGS; i++) | |
116 | regcache_raw_supply | |
117 | (regcache, i, | |
118 | (char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]); | |
119 | ||
120 | fetched++; | |
121 | } | |
122 | ||
123 | if (regno == -1 | |
124 | || (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS)) | |
125 | { | |
126 | i386_float_state_t fp_regs; | |
127 | unsigned int fp_count = i386_FLOAT_STATE_COUNT; | |
128 | kern_return_t ret; | |
129 | ||
130 | ret = thread_get_state | |
131 | (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs, | |
132 | &fp_count); | |
133 | if (ret != KERN_SUCCESS) | |
134 | { | |
135 | printf_unfiltered (_("Error calling thread_get_state for float registers for thread 0x%ulx"), current_thread); | |
136 | MACH_CHECK_ERROR (ret); | |
137 | } | |
138 | i387_supply_fxsave (regcache, -1, &fp_regs.__fpu_fcw); | |
139 | fetched++; | |
140 | } | |
141 | } | |
142 | ||
143 | if (! fetched) | |
144 | { | |
145 | warning (_("unknown register %d"), regno); | |
146 | regcache_raw_supply (regcache, regno, NULL); | |
147 | } | |
148 | } | |
149 | ||
150 | /* Store our register values back into the inferior. | |
151 | If REGNO is -1, do this for all registers. | |
152 | Otherwise, REGNO specifies which register (so we can save time). */ | |
153 | ||
154 | static void | |
28439f5e PA |
155 | i386_darwin_store_inferior_registers (struct target_ops *ops, |
156 | struct regcache *regcache, int regno) | |
a80b95ba TG |
157 | { |
158 | thread_t current_thread = ptid_get_tid (inferior_ptid); | |
159 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
160 | ||
5cd226f2 | 161 | #ifdef BFD64 |
a80b95ba TG |
162 | if (gdbarch_ptr_bit (gdbarch) == 64) |
163 | { | |
164 | if (regno == -1 || amd64_native_gregset_supplies_p (gdbarch, regno)) | |
165 | { | |
166 | x86_thread_state_t gp_regs; | |
167 | kern_return_t ret; | |
168 | unsigned int gp_count = x86_THREAD_STATE_COUNT; | |
169 | ||
170 | ret = thread_get_state | |
171 | (current_thread, x86_THREAD_STATE, (thread_state_t) &gp_regs, | |
172 | &gp_count); | |
173 | MACH_CHECK_ERROR (ret); | |
174 | gdb_assert (gp_regs.tsh.flavor == x86_THREAD_STATE64); | |
175 | gdb_assert (gp_regs.tsh.count == x86_THREAD_STATE64_COUNT); | |
176 | ||
177 | amd64_collect_native_gregset (regcache, &gp_regs.uts, regno); | |
178 | ||
179 | ret = thread_set_state (current_thread, x86_THREAD_STATE, | |
180 | (thread_state_t) &gp_regs, | |
181 | x86_THREAD_STATE_COUNT); | |
182 | MACH_CHECK_ERROR (ret); | |
183 | } | |
184 | ||
185 | if (regno == -1 || !amd64_native_gregset_supplies_p (gdbarch, regno)) | |
186 | { | |
187 | x86_float_state_t fp_regs; | |
188 | kern_return_t ret; | |
189 | unsigned int fp_count = x86_FLOAT_STATE_COUNT; | |
190 | ||
191 | ret = thread_get_state | |
192 | (current_thread, x86_FLOAT_STATE, (thread_state_t) & fp_regs, | |
193 | &fp_count); | |
194 | MACH_CHECK_ERROR (ret); | |
195 | gdb_assert (fp_regs.fsh.flavor == x86_FLOAT_STATE64); | |
196 | gdb_assert (fp_regs.fsh.count == x86_FLOAT_STATE64_COUNT); | |
197 | ||
46187dff | 198 | amd64_collect_fxsave (regcache, regno, &fp_regs.ufs.fs64.__fpu_fcw); |
a80b95ba TG |
199 | |
200 | ret = thread_set_state (current_thread, x86_FLOAT_STATE, | |
201 | (thread_state_t) & fp_regs, | |
202 | x86_FLOAT_STATE_COUNT); | |
203 | MACH_CHECK_ERROR (ret); | |
204 | } | |
205 | } | |
206 | else | |
5cd226f2 | 207 | #endif |
a80b95ba TG |
208 | { |
209 | if (regno == -1 || regno < I386_NUM_GREGS) | |
210 | { | |
211 | i386_thread_state_t gp_regs; | |
212 | kern_return_t ret; | |
213 | unsigned int gp_count = i386_THREAD_STATE_COUNT; | |
214 | int i; | |
215 | ||
216 | ret = thread_get_state | |
217 | (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs, | |
218 | &gp_count); | |
219 | MACH_CHECK_ERROR (ret); | |
220 | ||
221 | for (i = 0; i < I386_NUM_GREGS; i++) | |
222 | if (regno == -1 || regno == i) | |
223 | regcache_raw_collect | |
224 | (regcache, i, | |
225 | (char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]); | |
226 | ||
227 | ret = thread_set_state (current_thread, i386_THREAD_STATE, | |
228 | (thread_state_t) & gp_regs, | |
229 | i386_THREAD_STATE_COUNT); | |
230 | MACH_CHECK_ERROR (ret); | |
231 | } | |
232 | ||
233 | if (regno == -1 | |
234 | || (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS)) | |
235 | { | |
236 | i386_float_state_t fp_regs; | |
237 | unsigned int fp_count = i386_FLOAT_STATE_COUNT; | |
238 | kern_return_t ret; | |
239 | ||
240 | ret = thread_get_state | |
241 | (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs, | |
242 | &fp_count); | |
243 | MACH_CHECK_ERROR (ret); | |
244 | ||
245 | i387_collect_fxsave (regcache, regno, &fp_regs.__fpu_fcw); | |
246 | ||
247 | ret = thread_set_state (current_thread, i386_FLOAT_STATE, | |
248 | (thread_state_t) & fp_regs, | |
249 | i386_FLOAT_STATE_COUNT); | |
250 | MACH_CHECK_ERROR (ret); | |
251 | } | |
252 | } | |
253 | } | |
254 | ||
255 | ||
256 | /* Support for debug registers, boosted mostly from i386-linux-nat.c. */ | |
257 | ||
258 | #ifndef DR_FIRSTADDR | |
259 | #define DR_FIRSTADDR 0 | |
260 | #endif | |
261 | ||
262 | #ifndef DR_LASTADDR | |
263 | #define DR_LASTADDR 3 | |
264 | #endif | |
265 | ||
266 | #ifndef DR_STATUS | |
267 | #define DR_STATUS 6 | |
268 | #endif | |
269 | ||
270 | #ifndef DR_CONTROL | |
271 | #define DR_CONTROL 7 | |
272 | #endif | |
273 | ||
274 | ||
275 | static void | |
276 | i386_darwin_dr_set (int regnum, uint32_t value) | |
277 | { | |
278 | int current_pid; | |
279 | thread_t current_thread; | |
280 | x86_debug_state_t dr_regs; | |
281 | kern_return_t ret; | |
282 | unsigned int dr_count = x86_DEBUG_STATE_COUNT; | |
283 | ||
284 | gdb_assert (regnum >= 0 && regnum <= DR_CONTROL); | |
285 | ||
286 | current_thread = ptid_get_tid (inferior_ptid); | |
287 | ||
288 | dr_regs.dsh.flavor = x86_DEBUG_STATE32; | |
289 | dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT; | |
290 | dr_count = x86_DEBUG_STATE_COUNT; | |
291 | ret = thread_get_state (current_thread, x86_DEBUG_STATE, | |
292 | (thread_state_t) &dr_regs, &dr_count); | |
293 | ||
294 | if (ret != KERN_SUCCESS) | |
295 | { | |
296 | printf_unfiltered (_("Error reading debug registers thread 0x%x via thread_get_state\n"), (int) current_thread); | |
297 | MACH_CHECK_ERROR (ret); | |
298 | } | |
299 | ||
300 | switch (regnum) | |
301 | { | |
302 | case 0: | |
303 | dr_regs.uds.ds32.__dr0 = value; | |
304 | break; | |
305 | case 1: | |
306 | dr_regs.uds.ds32.__dr1 = value; | |
307 | break; | |
308 | case 2: | |
309 | dr_regs.uds.ds32.__dr2 = value; | |
310 | break; | |
311 | case 3: | |
312 | dr_regs.uds.ds32.__dr3 = value; | |
313 | break; | |
314 | case 4: | |
315 | dr_regs.uds.ds32.__dr4 = value; | |
316 | break; | |
317 | case 5: | |
318 | dr_regs.uds.ds32.__dr5 = value; | |
319 | break; | |
320 | case 6: | |
321 | dr_regs.uds.ds32.__dr6 = value; | |
322 | break; | |
323 | case 7: | |
324 | dr_regs.uds.ds32.__dr7 = value; | |
325 | break; | |
326 | } | |
327 | ||
328 | ret = thread_set_state (current_thread, x86_DEBUG_STATE, | |
329 | (thread_state_t) &dr_regs, dr_count); | |
330 | ||
331 | if (ret != KERN_SUCCESS) | |
332 | { | |
333 | printf_unfiltered (_("Error writing debug registers thread 0x%x via thread_get_state\n"), (int) current_thread); | |
334 | MACH_CHECK_ERROR (ret); | |
335 | } | |
336 | } | |
337 | ||
338 | static uint32_t | |
339 | i386_darwin_dr_get (int regnum) | |
340 | { | |
341 | thread_t current_thread; | |
342 | x86_debug_state_t dr_regs; | |
343 | kern_return_t ret; | |
344 | unsigned int dr_count = x86_DEBUG_STATE_COUNT; | |
345 | ||
346 | gdb_assert (regnum >= 0 && regnum <= DR_CONTROL); | |
347 | ||
348 | current_thread = ptid_get_tid (inferior_ptid); | |
349 | ||
350 | dr_regs.dsh.flavor = x86_DEBUG_STATE32; | |
351 | dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT; | |
352 | dr_count = x86_DEBUG_STATE_COUNT; | |
353 | ret = thread_get_state (current_thread, x86_DEBUG_STATE, | |
354 | (thread_state_t) &dr_regs, &dr_count); | |
355 | ||
356 | if (ret != KERN_SUCCESS) | |
357 | { | |
358 | printf_unfiltered (_("Error reading debug registers thread 0x%x via thread_get_state\n"), (int) current_thread); | |
359 | MACH_CHECK_ERROR (ret); | |
360 | } | |
361 | ||
362 | switch (regnum) | |
363 | { | |
364 | case 0: | |
365 | return dr_regs.uds.ds32.__dr0; | |
366 | case 1: | |
367 | return dr_regs.uds.ds32.__dr1; | |
368 | case 2: | |
369 | return dr_regs.uds.ds32.__dr2; | |
370 | case 3: | |
371 | return dr_regs.uds.ds32.__dr3; | |
372 | case 4: | |
373 | return dr_regs.uds.ds32.__dr4; | |
374 | case 5: | |
375 | return dr_regs.uds.ds32.__dr5; | |
376 | case 6: | |
377 | return dr_regs.uds.ds32.__dr6; | |
378 | case 7: | |
379 | return dr_regs.uds.ds32.__dr7; | |
380 | default: | |
381 | return -1; | |
382 | } | |
383 | } | |
384 | ||
385 | void | |
386 | i386_darwin_dr_set_control (unsigned long control) | |
387 | { | |
388 | i386_darwin_dr_set (DR_CONTROL, control); | |
389 | } | |
390 | ||
391 | void | |
392 | i386_darwin_dr_set_addr (int regnum, CORE_ADDR addr) | |
393 | { | |
394 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); | |
395 | ||
396 | i386_darwin_dr_set (DR_FIRSTADDR + regnum, addr); | |
397 | } | |
398 | ||
399 | void | |
400 | i386_darwin_dr_reset_addr (int regnum) | |
401 | { | |
402 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); | |
403 | ||
404 | i386_darwin_dr_set (DR_FIRSTADDR + regnum, 0L); | |
405 | } | |
406 | ||
407 | unsigned long | |
408 | i386_darwin_dr_get_status (void) | |
409 | { | |
410 | return i386_darwin_dr_get (DR_STATUS); | |
411 | } | |
412 | ||
413 | void | |
414 | darwin_check_osabi (darwin_inferior *inf, thread_t thread) | |
415 | { | |
a97b0ac8 | 416 | if (gdbarch_osabi (target_gdbarch) == GDB_OSABI_UNKNOWN) |
a80b95ba TG |
417 | { |
418 | /* Attaching to a process. Let's figure out what kind it is. */ | |
419 | x86_thread_state_t gp_regs; | |
420 | struct gdbarch_info info; | |
421 | unsigned int gp_count = x86_THREAD_STATE_COUNT; | |
422 | kern_return_t ret; | |
423 | ||
424 | ret = thread_get_state (thread, x86_THREAD_STATE, | |
425 | (thread_state_t) &gp_regs, &gp_count); | |
426 | if (ret != KERN_SUCCESS) | |
427 | { | |
428 | MACH_CHECK_ERROR (ret); | |
429 | return; | |
430 | } | |
431 | ||
432 | gdbarch_info_init (&info); | |
433 | gdbarch_info_fill (&info); | |
a97b0ac8 | 434 | info.byte_order = gdbarch_byte_order (target_gdbarch); |
a80b95ba TG |
435 | info.osabi = GDB_OSABI_DARWIN; |
436 | if (gp_regs.tsh.flavor == x86_THREAD_STATE64) | |
437 | info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386, | |
438 | bfd_mach_x86_64); | |
439 | else | |
440 | info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386, | |
441 | bfd_mach_i386_i386); | |
442 | gdbarch_update_p (info); | |
443 | } | |
444 | } | |
445 | ||
446 | #define X86_EFLAGS_T 0x100UL | |
447 | ||
acdb24a9 TG |
448 | /* Returning from a signal trampoline is done by calling a |
449 | special system call (sigreturn). This system call | |
450 | restores the registers that were saved when the signal was | |
451 | raised, including %eflags/%rflags. That means that single-stepping | |
452 | won't work. Instead, we'll have to modify the signal context | |
453 | that's about to be restored, and set the trace flag there. */ | |
454 | ||
455 | static int | |
456 | i386_darwin_sstep_at_sigreturn (x86_thread_state_t *regs) | |
457 | { | |
e17a4113 | 458 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
acdb24a9 TG |
459 | static const gdb_byte darwin_syscall[] = { 0xcd, 0x80 }; /* int 0x80 */ |
460 | gdb_byte buf[sizeof (darwin_syscall)]; | |
461 | ||
462 | /* Check if PC is at a sigreturn system call. */ | |
463 | if (target_read_memory (regs->uts.ts32.__eip, buf, sizeof (buf)) == 0 | |
464 | && memcmp (buf, darwin_syscall, sizeof (darwin_syscall)) == 0 | |
465 | && regs->uts.ts32.__eax == 0xb8 /* SYS_sigreturn */) | |
466 | { | |
467 | ULONGEST uctx_addr; | |
468 | ULONGEST mctx_addr; | |
469 | ULONGEST flags_addr; | |
470 | unsigned int eflags; | |
471 | ||
e17a4113 UW |
472 | uctx_addr = read_memory_unsigned_integer |
473 | (regs->uts.ts32.__esp + 4, 4, byte_order); | |
474 | mctx_addr = read_memory_unsigned_integer | |
475 | (uctx_addr + 28, 4, byte_order); | |
acdb24a9 TG |
476 | |
477 | flags_addr = mctx_addr + 12 + 9 * 4; | |
478 | read_memory (flags_addr, (gdb_byte *) &eflags, 4); | |
479 | eflags |= X86_EFLAGS_T; | |
480 | write_memory (flags_addr, (gdb_byte *) &eflags, 4); | |
481 | ||
482 | return 1; | |
483 | } | |
484 | return 0; | |
485 | } | |
486 | ||
5cd226f2 | 487 | #ifdef BFD64 |
acdb24a9 TG |
488 | static int |
489 | amd64_darwin_sstep_at_sigreturn (x86_thread_state_t *regs) | |
490 | { | |
e17a4113 | 491 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
acdb24a9 TG |
492 | static const gdb_byte darwin_syscall[] = { 0x0f, 0x05 }; /* syscall */ |
493 | gdb_byte buf[sizeof (darwin_syscall)]; | |
494 | ||
495 | /* Check if PC is at a sigreturn system call. */ | |
496 | if (target_read_memory (regs->uts.ts64.__rip, buf, sizeof (buf)) == 0 | |
497 | && memcmp (buf, darwin_syscall, sizeof (darwin_syscall)) == 0 | |
498 | && (regs->uts.ts64.__rax & 0xffffffff) == 0x20000b8 /* SYS_sigreturn */) | |
499 | { | |
500 | ULONGEST mctx_addr; | |
501 | ULONGEST flags_addr; | |
502 | unsigned int rflags; | |
503 | ||
e17a4113 UW |
504 | mctx_addr = read_memory_unsigned_integer |
505 | (regs->uts.ts64.__rdi + 48, 8, byte_order); | |
acdb24a9 TG |
506 | flags_addr = mctx_addr + 16 + 17 * 8; |
507 | ||
508 | /* AMD64 is little endian. */ | |
509 | read_memory (flags_addr, (gdb_byte *) &rflags, 4); | |
510 | rflags |= X86_EFLAGS_T; | |
511 | write_memory (flags_addr, (gdb_byte *) &rflags, 4); | |
512 | ||
513 | return 1; | |
514 | } | |
515 | return 0; | |
516 | } | |
5cd226f2 | 517 | #endif |
acdb24a9 | 518 | |
a80b95ba TG |
519 | void |
520 | darwin_set_sstep (thread_t thread, int enable) | |
521 | { | |
522 | x86_thread_state_t regs; | |
523 | unsigned int count = x86_THREAD_STATE_COUNT; | |
524 | kern_return_t kret; | |
525 | ||
526 | kret = thread_get_state (thread, x86_THREAD_STATE, | |
527 | (thread_state_t) ®s, &count); | |
528 | if (kret != KERN_SUCCESS) | |
529 | { | |
530 | printf_unfiltered (_("darwin_set_sstep: error %x, thread=%x\n"), | |
531 | kret, thread); | |
532 | return; | |
533 | } | |
acdb24a9 | 534 | |
a80b95ba TG |
535 | switch (regs.tsh.flavor) |
536 | { | |
537 | case x86_THREAD_STATE32: | |
538 | { | |
539 | __uint32_t bit = enable ? X86_EFLAGS_T : 0; | |
540 | ||
acdb24a9 TG |
541 | if (enable && i386_darwin_sstep_at_sigreturn (®s)) |
542 | return; | |
a80b95ba TG |
543 | if ((regs.uts.ts32.__eflags & X86_EFLAGS_T) == bit) |
544 | return; | |
545 | regs.uts.ts32.__eflags = (regs.uts.ts32.__eflags & ~X86_EFLAGS_T) | bit; | |
546 | kret = thread_set_state (thread, x86_THREAD_STATE, | |
547 | (thread_state_t) ®s, count); | |
548 | MACH_CHECK_ERROR (kret); | |
549 | } | |
550 | break; | |
5cd226f2 | 551 | #ifdef BFD64 |
a80b95ba TG |
552 | case x86_THREAD_STATE64: |
553 | { | |
554 | __uint64_t bit = enable ? X86_EFLAGS_T : 0; | |
555 | ||
acdb24a9 TG |
556 | if (enable && amd64_darwin_sstep_at_sigreturn (®s)) |
557 | return; | |
a80b95ba TG |
558 | if ((regs.uts.ts64.__rflags & X86_EFLAGS_T) == bit) |
559 | return; | |
560 | regs.uts.ts64.__rflags = (regs.uts.ts64.__rflags & ~X86_EFLAGS_T) | bit; | |
561 | kret = thread_set_state (thread, x86_THREAD_STATE, | |
562 | (thread_state_t) ®s, count); | |
563 | MACH_CHECK_ERROR (kret); | |
564 | } | |
565 | break; | |
5cd226f2 | 566 | #endif |
a80b95ba TG |
567 | default: |
568 | error (_("darwin_set_sstep: unknown flavour: %d\n"), regs.tsh.flavor); | |
569 | } | |
570 | } | |
571 | ||
572 | void | |
573 | darwin_complete_target (struct target_ops *target) | |
574 | { | |
5cd226f2 | 575 | #ifdef BFD64 |
a80b95ba TG |
576 | amd64_native_gregset64_reg_offset = amd64_darwin_thread_state_reg_offset; |
577 | amd64_native_gregset64_num_regs = amd64_darwin_thread_state_num_regs; | |
578 | amd64_native_gregset32_reg_offset = i386_darwin_thread_state_reg_offset; | |
579 | amd64_native_gregset32_num_regs = i386_darwin_thread_state_num_regs; | |
5cd226f2 | 580 | #endif |
a80b95ba TG |
581 | |
582 | target->to_fetch_registers = i386_darwin_fetch_inferior_registers; | |
583 | target->to_store_registers = i386_darwin_store_inferior_registers; | |
584 | } |