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1 | /* Low level interface for debugging AIX 4.3+ pthreads. |
2 | ||
6aba47ca | 3 | Copyright (C) 1999, 2000, 2002, 2007 Free Software Foundation, Inc. |
c11d79f2 KB |
4 | Written by Nick Duffek <nsd@redhat.com>. |
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 | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
c11d79f2 KB |
22 | |
23 | ||
24 | /* This module uses the libpthdebug.a library provided by AIX 4.3+ for | |
25 | debugging pthread applications. | |
26 | ||
27 | Some name prefix conventions: | |
28 | pthdb_ provided by libpthdebug.a | |
29 | pdc_ callbacks that this module provides to libpthdebug.a | |
30 | pd_ variables or functions interfacing with libpthdebug.a | |
31 | ||
32 | libpthdebug peculiarities: | |
33 | ||
0fe7bf7b MS |
34 | - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but |
35 | it's not documented, and after several calls it stops working | |
36 | and causes other libpthdebug functions to fail. | |
c11d79f2 | 37 | |
0fe7bf7b MS |
38 | - pthdb_tid_pthread() doesn't always work after |
39 | pthdb_session_update(), but it does work after cycling through | |
40 | all threads using pthdb_pthread(). | |
c11d79f2 KB |
41 | |
42 | */ | |
43 | ||
44 | #include "defs.h" | |
61c5da0b | 45 | #include "gdb_assert.h" |
c11d79f2 KB |
46 | #include "gdbthread.h" |
47 | #include "target.h" | |
48 | #include "inferior.h" | |
49 | #include "regcache.h" | |
8e2c28d4 | 50 | #include "gdbcmd.h" |
27bae383 | 51 | #include "ppc-tdep.h" |
0d4d5484 | 52 | #include "gdb_string.h" |
06d3b283 | 53 | #include "observer.h" |
c11d79f2 | 54 | |
c11d79f2 KB |
55 | #include <procinfo.h> |
56 | #include <sys/types.h> | |
57 | #include <sys/ptrace.h> | |
58 | #include <sys/reg.h> | |
c11d79f2 KB |
59 | #include <sched.h> |
60 | #include <sys/pthdebug.h> | |
61 | ||
0fe7bf7b | 62 | /* Whether to emit debugging output. */ |
8e2c28d4 | 63 | static int debug_aix_thread; |
c11d79f2 | 64 | |
0fe7bf7b | 65 | /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */ |
c11d79f2 KB |
66 | #ifndef PTHDB_VERSION_3 |
67 | #define pthdb_tid_t tid_t | |
68 | #endif | |
69 | ||
0fe7bf7b | 70 | /* Return whether to treat PID as a debuggable thread id. */ |
c11d79f2 KB |
71 | |
72 | #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0) | |
73 | ||
74 | /* Build a thread ptid. */ | |
75 | #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID) | |
76 | ||
77 | /* Build and lwp ptid. */ | |
78 | #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP) | |
79 | ||
c11d79f2 | 80 | /* pthdb_user_t value that we pass to pthdb functions. 0 causes |
0fe7bf7b | 81 | PTHDB_BAD_USER errors, so use 1. */ |
c11d79f2 KB |
82 | |
83 | #define PD_USER 1 | |
84 | ||
0fe7bf7b | 85 | /* Success and failure values returned by pthdb callbacks. */ |
c11d79f2 KB |
86 | |
87 | #define PDC_SUCCESS PTHDB_SUCCESS | |
88 | #define PDC_FAILURE PTHDB_CALLBACK | |
89 | ||
0fe7bf7b | 90 | /* Private data attached to each element in GDB's thread list. */ |
c11d79f2 KB |
91 | |
92 | struct private_thread_info { | |
0fe7bf7b | 93 | pthdb_pthread_t pdtid; /* thread's libpthdebug id */ |
c11d79f2 KB |
94 | pthdb_tid_t tid; /* kernel thread id */ |
95 | }; | |
96 | ||
0fe7bf7b | 97 | /* Information about a thread of which libpthdebug is aware. */ |
c11d79f2 KB |
98 | |
99 | struct pd_thread { | |
100 | pthdb_pthread_t pdtid; | |
101 | pthread_t pthid; | |
102 | pthdb_tid_t tid; | |
103 | }; | |
104 | ||
0fe7bf7b | 105 | /* This module's target-specific operations, active while pd_able is true. */ |
c11d79f2 | 106 | |
206d3d3c | 107 | static struct target_ops aix_thread_ops; |
c11d79f2 | 108 | |
1df84f13 AC |
109 | /* Copy of the target over which ops is pushed. This is more |
110 | convenient than a pointer to deprecated_child_ops or core_ops, | |
0fe7bf7b | 111 | because they lack current_target's default callbacks. */ |
c11d79f2 | 112 | |
206d3d3c | 113 | static struct target_ops base_target; |
c11d79f2 | 114 | |
0fe7bf7b MS |
115 | /* Address of the function that libpthread will call when libpthdebug |
116 | is ready to be initialized. */ | |
c11d79f2 KB |
117 | |
118 | static CORE_ADDR pd_brk_addr; | |
119 | ||
0fe7bf7b | 120 | /* Whether the current application is debuggable by pthdb. */ |
c11d79f2 KB |
121 | |
122 | static int pd_able = 0; | |
123 | ||
0fe7bf7b | 124 | /* Whether a threaded application is being debugged. */ |
c11d79f2 KB |
125 | |
126 | static int pd_active = 0; | |
127 | ||
0fe7bf7b MS |
128 | /* Whether the current architecture is 64-bit. |
129 | Only valid when pd_able is true. */ | |
c11d79f2 KB |
130 | |
131 | static int arch64; | |
132 | ||
0fe7bf7b | 133 | /* Forward declarations for pthdb callbacks. */ |
c11d79f2 KB |
134 | |
135 | static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int); | |
136 | static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t); | |
137 | static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t); | |
138 | static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid, | |
0fe7bf7b MS |
139 | unsigned long long flags, |
140 | pthdb_context_t *context); | |
c11d79f2 | 141 | static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid, |
0fe7bf7b MS |
142 | unsigned long long flags, |
143 | pthdb_context_t *context); | |
c11d79f2 KB |
144 | static int pdc_alloc (pthdb_user_t, size_t, void **); |
145 | static int pdc_realloc (pthdb_user_t, void *, size_t, void **); | |
146 | static int pdc_dealloc (pthdb_user_t, void *); | |
147 | ||
0fe7bf7b | 148 | /* pthdb callbacks. */ |
c11d79f2 KB |
149 | |
150 | static pthdb_callbacks_t pd_callbacks = { | |
151 | pdc_symbol_addrs, | |
152 | pdc_read_data, | |
153 | pdc_write_data, | |
154 | pdc_read_regs, | |
155 | pdc_write_regs, | |
156 | pdc_alloc, | |
157 | pdc_realloc, | |
158 | pdc_dealloc, | |
159 | NULL | |
160 | }; | |
161 | ||
0fe7bf7b | 162 | /* Current pthdb session. */ |
c11d79f2 KB |
163 | |
164 | static pthdb_session_t pd_session; | |
165 | ||
0fe7bf7b MS |
166 | /* Return a printable representation of pthdebug function return |
167 | STATUS. */ | |
c11d79f2 KB |
168 | |
169 | static char * | |
170 | pd_status2str (int status) | |
171 | { | |
172 | switch (status) | |
173 | { | |
174 | case PTHDB_SUCCESS: return "SUCCESS"; | |
175 | case PTHDB_NOSYS: return "NOSYS"; | |
176 | case PTHDB_NOTSUP: return "NOTSUP"; | |
177 | case PTHDB_BAD_VERSION: return "BAD_VERSION"; | |
178 | case PTHDB_BAD_USER: return "BAD_USER"; | |
179 | case PTHDB_BAD_SESSION: return "BAD_SESSION"; | |
180 | case PTHDB_BAD_MODE: return "BAD_MODE"; | |
181 | case PTHDB_BAD_FLAGS: return "BAD_FLAGS"; | |
182 | case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK"; | |
183 | case PTHDB_BAD_POINTER: return "BAD_POINTER"; | |
184 | case PTHDB_BAD_CMD: return "BAD_CMD"; | |
185 | case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD"; | |
186 | case PTHDB_BAD_ATTR: return "BAD_ATTR"; | |
187 | case PTHDB_BAD_MUTEX: return "BAD_MUTEX"; | |
188 | case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR"; | |
189 | case PTHDB_BAD_COND: return "BAD_COND"; | |
190 | case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR"; | |
191 | case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK"; | |
192 | case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR"; | |
193 | case PTHDB_BAD_KEY: return "BAD_KEY"; | |
194 | case PTHDB_BAD_PTID: return "BAD_PTID"; | |
195 | case PTHDB_BAD_TID: return "BAD_TID"; | |
196 | case PTHDB_CALLBACK: return "CALLBACK"; | |
197 | case PTHDB_CONTEXT: return "CONTEXT"; | |
198 | case PTHDB_HELD: return "HELD"; | |
199 | case PTHDB_NOT_HELD: return "NOT_HELD"; | |
200 | case PTHDB_MEMORY: return "MEMORY"; | |
201 | case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED"; | |
202 | case PTHDB_SYMBOL: return "SYMBOL"; | |
203 | case PTHDB_NOT_AVAIL: return "NOT_AVAIL"; | |
204 | case PTHDB_INTERNAL: return "INTERNAL"; | |
205 | default: return "UNKNOWN"; | |
206 | } | |
207 | } | |
208 | ||
0fe7bf7b MS |
209 | /* A call to ptrace(REQ, ID, ...) just returned RET. Check for |
210 | exceptional conditions and either return nonlocally or else return | |
211 | 1 for success and 0 for failure. */ | |
c11d79f2 KB |
212 | |
213 | static int | |
214 | ptrace_check (int req, int id, int ret) | |
215 | { | |
216 | if (ret == 0 && !errno) | |
217 | return 1; | |
218 | ||
0fe7bf7b MS |
219 | /* According to ptrace(2), ptrace may fail with EPERM if "the |
220 | Identifier parameter corresponds to a kernel thread which is | |
221 | stopped in kernel mode and whose computational state cannot be | |
222 | read or written." This happens quite often with register reads. */ | |
c11d79f2 KB |
223 | |
224 | switch (req) | |
225 | { | |
226 | case PTT_READ_GPRS: | |
227 | case PTT_READ_FPRS: | |
228 | case PTT_READ_SPRS: | |
229 | if (ret == -1 && errno == EPERM) | |
42cc437f KB |
230 | { |
231 | if (debug_aix_thread) | |
0fe7bf7b | 232 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 233 | "ptrace (%d, %d) = %d (errno = %d)\n", |
42cc437f KB |
234 | req, id, ret, errno); |
235 | return ret == -1 ? 0 : 1; | |
236 | } | |
c11d79f2 KB |
237 | break; |
238 | } | |
edefbb7c | 239 | error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"), |
be006b8b | 240 | req, id, ret, errno, safe_strerror (errno)); |
0fe7bf7b | 241 | return 0; /* Not reached. */ |
c11d79f2 KB |
242 | } |
243 | ||
0fe7bf7b | 244 | /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */ |
c11d79f2 KB |
245 | |
246 | static int | |
247 | ptrace64aix (int req, int id, long long addr, int data, int *buf) | |
248 | { | |
249 | errno = 0; | |
250 | return ptrace_check (req, id, ptracex (req, id, addr, data, buf)); | |
251 | } | |
252 | ||
0fe7bf7b | 253 | /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */ |
c11d79f2 KB |
254 | |
255 | static int | |
256 | ptrace32 (int req, int id, int *addr, int data, int *buf) | |
257 | { | |
258 | errno = 0; | |
0fe7bf7b | 259 | return ptrace_check (req, id, |
206d3d3c | 260 | ptrace (req, id, (int *) addr, data, buf)); |
c11d79f2 KB |
261 | } |
262 | ||
0fe7bf7b MS |
263 | /* If *PIDP is a composite process/thread id, convert it to a |
264 | process id. */ | |
c11d79f2 KB |
265 | |
266 | static void | |
267 | pid_to_prc (ptid_t *ptidp) | |
268 | { | |
269 | ptid_t ptid; | |
270 | ||
271 | ptid = *ptidp; | |
272 | if (PD_TID (ptid)) | |
273 | *ptidp = pid_to_ptid (PIDGET (ptid)); | |
274 | } | |
275 | ||
0fe7bf7b MS |
276 | /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to |
277 | the address of SYMBOLS[<i>].name. */ | |
c11d79f2 KB |
278 | |
279 | static int | |
280 | pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count) | |
281 | { | |
282 | struct minimal_symbol *ms; | |
283 | int i; | |
284 | char *name; | |
285 | ||
8e2c28d4 KB |
286 | if (debug_aix_thread) |
287 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 288 | "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n", |
8e2c28d4 | 289 | user, (long) symbols, count); |
c11d79f2 KB |
290 | |
291 | for (i = 0; i < count; i++) | |
292 | { | |
293 | name = symbols[i].name; | |
8e2c28d4 | 294 | if (debug_aix_thread) |
0fe7bf7b | 295 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 296 | " symbols[%d].name = \"%s\"\n", i, name); |
c11d79f2 KB |
297 | |
298 | if (!*name) | |
299 | symbols[i].addr = 0; | |
300 | else | |
301 | { | |
302 | if (!(ms = lookup_minimal_symbol (name, NULL, NULL))) | |
303 | { | |
8e2c28d4 | 304 | if (debug_aix_thread) |
27bae383 | 305 | fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE\n"); |
c11d79f2 KB |
306 | return PDC_FAILURE; |
307 | } | |
308 | symbols[i].addr = SYMBOL_VALUE_ADDRESS (ms); | |
309 | } | |
8e2c28d4 | 310 | if (debug_aix_thread) |
27bae383 | 311 | fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = %s\n", |
bb599908 | 312 | i, hex_string (symbols[i].addr)); |
c11d79f2 | 313 | } |
8e2c28d4 | 314 | if (debug_aix_thread) |
27bae383 | 315 | fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS\n"); |
c11d79f2 KB |
316 | return PDC_SUCCESS; |
317 | } | |
318 | ||
0fe7bf7b MS |
319 | /* Read registers call back function should be able to read the |
320 | context information of a debuggee kernel thread from an active | |
321 | process or from a core file. The information should be formatted | |
322 | in context64 form for both 32-bit and 64-bit process. | |
323 | If successful return 0, else non-zero is returned. */ | |
324 | ||
c11d79f2 KB |
325 | static int |
326 | pdc_read_regs (pthdb_user_t user, | |
327 | pthdb_tid_t tid, | |
328 | unsigned long long flags, | |
329 | pthdb_context_t *context) | |
330 | { | |
0fe7bf7b MS |
331 | /* This function doesn't appear to be used, so we could probably |
332 | just return 0 here. HOWEVER, if it is not defined, the OS will | |
333 | complain and several thread debug functions will fail. In case | |
334 | this is needed, I have implemented what I think it should do, | |
335 | however this code is untested. */ | |
336 | ||
063715bf JB |
337 | uint64_t gprs64[ppc_num_gprs]; |
338 | uint32_t gprs32[ppc_num_gprs]; | |
339 | double fprs[ppc_num_fprs]; | |
c11d79f2 KB |
340 | struct ptxsprs sprs64; |
341 | struct ptsprs sprs32; | |
342 | ||
8e2c28d4 | 343 | if (debug_aix_thread) |
27bae383 | 344 | fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%s\n", |
bb599908 | 345 | (int) tid, hex_string (flags)); |
c11d79f2 | 346 | |
0fe7bf7b | 347 | /* General-purpose registers. */ |
c11d79f2 KB |
348 | if (flags & PTHDB_FLAG_GPRS) |
349 | { | |
350 | if (arch64) | |
351 | { | |
0fe7bf7b MS |
352 | if (!ptrace64aix (PTT_READ_GPRS, tid, |
353 | (unsigned long) gprs64, 0, NULL)) | |
c11d79f2 KB |
354 | memset (gprs64, 0, sizeof (gprs64)); |
355 | memcpy (context->gpr, gprs64, sizeof(gprs64)); | |
356 | } | |
357 | else | |
358 | { | |
359 | if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL)) | |
360 | memset (gprs32, 0, sizeof (gprs32)); | |
361 | memcpy (context->gpr, gprs32, sizeof(gprs32)); | |
362 | } | |
363 | } | |
364 | ||
0fe7bf7b | 365 | /* Floating-point registers. */ |
c11d79f2 KB |
366 | if (flags & PTHDB_FLAG_FPRS) |
367 | { | |
368 | if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL)) | |
369 | memset (fprs, 0, sizeof (fprs)); | |
370 | memcpy (context->fpr, fprs, sizeof(fprs)); | |
371 | } | |
372 | ||
0fe7bf7b | 373 | /* Special-purpose registers. */ |
c11d79f2 KB |
374 | if (flags & PTHDB_FLAG_SPRS) |
375 | { | |
376 | if (arch64) | |
377 | { | |
0fe7bf7b MS |
378 | if (!ptrace64aix (PTT_READ_SPRS, tid, |
379 | (unsigned long) &sprs64, 0, NULL)) | |
c11d79f2 KB |
380 | memset (&sprs64, 0, sizeof (sprs64)); |
381 | memcpy (&context->msr, &sprs64, sizeof(sprs64)); | |
382 | } | |
383 | else | |
384 | { | |
385 | if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL)) | |
386 | memset (&sprs32, 0, sizeof (sprs32)); | |
387 | memcpy (&context->msr, &sprs32, sizeof(sprs32)); | |
388 | } | |
389 | } | |
390 | return 0; | |
391 | } | |
392 | ||
0fe7bf7b MS |
393 | /* Write register function should be able to write requested context |
394 | information to specified debuggee's kernel thread id. | |
395 | If successful return 0, else non-zero is returned. */ | |
396 | ||
c11d79f2 KB |
397 | static int |
398 | pdc_write_regs (pthdb_user_t user, | |
399 | pthdb_tid_t tid, | |
400 | unsigned long long flags, | |
401 | pthdb_context_t *context) | |
402 | { | |
0fe7bf7b MS |
403 | /* This function doesn't appear to be used, so we could probably |
404 | just return 0 here. HOWEVER, if it is not defined, the OS will | |
405 | complain and several thread debug functions will fail. In case | |
406 | this is needed, I have implemented what I think it should do, | |
407 | however this code is untested. */ | |
c11d79f2 | 408 | |
8e2c28d4 | 409 | if (debug_aix_thread) |
27bae383 | 410 | fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%s\n", |
bb599908 | 411 | (int) tid, hex_string (flags)); |
c11d79f2 | 412 | |
0fe7bf7b | 413 | /* General-purpose registers. */ |
c11d79f2 KB |
414 | if (flags & PTHDB_FLAG_GPRS) |
415 | { | |
416 | if (arch64) | |
0fe7bf7b | 417 | ptrace64aix (PTT_WRITE_GPRS, tid, |
206d3d3c | 418 | (unsigned long) context->gpr, 0, NULL); |
c11d79f2 | 419 | else |
206d3d3c | 420 | ptrace32 (PTT_WRITE_GPRS, tid, (int *) context->gpr, 0, NULL); |
c11d79f2 KB |
421 | } |
422 | ||
0fe7bf7b | 423 | /* Floating-point registers. */ |
c11d79f2 KB |
424 | if (flags & PTHDB_FLAG_FPRS) |
425 | { | |
206d3d3c | 426 | ptrace32 (PTT_WRITE_FPRS, tid, (int *) context->fpr, 0, NULL); |
c11d79f2 KB |
427 | } |
428 | ||
0fe7bf7b | 429 | /* Special-purpose registers. */ |
c11d79f2 KB |
430 | if (flags & PTHDB_FLAG_SPRS) |
431 | { | |
432 | if (arch64) | |
433 | { | |
0fe7bf7b MS |
434 | ptrace64aix (PTT_WRITE_SPRS, tid, |
435 | (unsigned long) &context->msr, 0, NULL); | |
c11d79f2 KB |
436 | } |
437 | else | |
438 | { | |
206d3d3c | 439 | ptrace32 (PTT_WRITE_SPRS, tid, (int *) &context->msr, 0, NULL); |
c11d79f2 KB |
440 | } |
441 | } | |
442 | return 0; | |
443 | } | |
444 | ||
0fe7bf7b | 445 | /* pthdb callback: read LEN bytes from process ADDR into BUF. */ |
c11d79f2 KB |
446 | |
447 | static int | |
0fe7bf7b MS |
448 | pdc_read_data (pthdb_user_t user, void *buf, |
449 | pthdb_addr_t addr, size_t len) | |
c11d79f2 KB |
450 | { |
451 | int status, ret; | |
452 | ||
8e2c28d4 KB |
453 | if (debug_aix_thread) |
454 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 455 | "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n", |
bb599908 | 456 | user, (long) buf, hex_string (addr), len); |
c11d79f2 KB |
457 | |
458 | status = target_read_memory (addr, buf, len); | |
459 | ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE; | |
460 | ||
8e2c28d4 | 461 | if (debug_aix_thread) |
27bae383 | 462 | fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", |
0fe7bf7b | 463 | status, pd_status2str (ret)); |
c11d79f2 KB |
464 | return ret; |
465 | } | |
466 | ||
0fe7bf7b | 467 | /* pthdb callback: write LEN bytes from BUF to process ADDR. */ |
c11d79f2 KB |
468 | |
469 | static int | |
0fe7bf7b MS |
470 | pdc_write_data (pthdb_user_t user, void *buf, |
471 | pthdb_addr_t addr, size_t len) | |
c11d79f2 KB |
472 | { |
473 | int status, ret; | |
474 | ||
8e2c28d4 KB |
475 | if (debug_aix_thread) |
476 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 477 | "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n", |
bb599908 | 478 | user, (long) buf, hex_string (addr), len); |
c11d79f2 KB |
479 | |
480 | status = target_write_memory (addr, buf, len); | |
481 | ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE; | |
482 | ||
8e2c28d4 | 483 | if (debug_aix_thread) |
27bae383 | 484 | fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", status, |
8e2c28d4 | 485 | pd_status2str (ret)); |
c11d79f2 KB |
486 | return ret; |
487 | } | |
488 | ||
0fe7bf7b MS |
489 | /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it |
490 | in BUFP. */ | |
c11d79f2 KB |
491 | |
492 | static int | |
493 | pdc_alloc (pthdb_user_t user, size_t len, void **bufp) | |
494 | { | |
8e2c28d4 KB |
495 | if (debug_aix_thread) |
496 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 497 | "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n", |
8e2c28d4 | 498 | user, len, (long) bufp); |
c11d79f2 | 499 | *bufp = xmalloc (len); |
8e2c28d4 | 500 | if (debug_aix_thread) |
0fe7bf7b | 501 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 502 | " malloc returned 0x%lx\n", (long) *bufp); |
0fe7bf7b MS |
503 | |
504 | /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never | |
505 | be returned. */ | |
506 | ||
c11d79f2 KB |
507 | return *bufp ? PDC_SUCCESS : PDC_FAILURE; |
508 | } | |
509 | ||
0fe7bf7b MS |
510 | /* pthdb callback: reallocate BUF, which was allocated by the alloc or |
511 | realloc callback, so that it contains LEN bytes, and store a | |
512 | pointer to the result in BUFP. */ | |
c11d79f2 KB |
513 | |
514 | static int | |
515 | pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp) | |
516 | { | |
8e2c28d4 KB |
517 | if (debug_aix_thread) |
518 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 519 | "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n", |
8e2c28d4 | 520 | user, (long) buf, len, (long) bufp); |
be006b8b | 521 | *bufp = xrealloc (buf, len); |
8e2c28d4 | 522 | if (debug_aix_thread) |
0fe7bf7b | 523 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 524 | " realloc returned 0x%lx\n", (long) *bufp); |
c11d79f2 KB |
525 | return *bufp ? PDC_SUCCESS : PDC_FAILURE; |
526 | } | |
527 | ||
0fe7bf7b MS |
528 | /* pthdb callback: free BUF, which was allocated by the alloc or |
529 | realloc callback. */ | |
c11d79f2 KB |
530 | |
531 | static int | |
532 | pdc_dealloc (pthdb_user_t user, void *buf) | |
533 | { | |
8e2c28d4 | 534 | if (debug_aix_thread) |
0fe7bf7b | 535 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 536 | "pdc_free (user = %ld, buf = 0x%lx)\n", user, |
8e2c28d4 | 537 | (long) buf); |
c11d79f2 KB |
538 | xfree (buf); |
539 | return PDC_SUCCESS; | |
540 | } | |
541 | ||
0fe7bf7b | 542 | /* Return a printable representation of pthread STATE. */ |
c11d79f2 KB |
543 | |
544 | static char * | |
545 | state2str (pthdb_state_t state) | |
546 | { | |
547 | switch (state) | |
548 | { | |
edefbb7c AC |
549 | case PST_IDLE: |
550 | /* i18n: Like "Thread-Id %d, [state] idle" */ | |
551 | return _("idle"); /* being created */ | |
552 | case PST_RUN: | |
553 | /* i18n: Like "Thread-Id %d, [state] running" */ | |
554 | return _("running"); /* running */ | |
555 | case PST_SLEEP: | |
556 | /* i18n: Like "Thread-Id %d, [state] sleeping" */ | |
557 | return _("sleeping"); /* awaiting an event */ | |
558 | case PST_READY: | |
559 | /* i18n: Like "Thread-Id %d, [state] ready" */ | |
560 | return _("ready"); /* runnable */ | |
561 | case PST_TERM: | |
562 | /* i18n: Like "Thread-Id %d, [state] finished" */ | |
563 | return _("finished"); /* awaiting a join/detach */ | |
564 | default: | |
565 | /* i18n: Like "Thread-Id %d, [state] unknown" */ | |
566 | return _("unknown"); | |
c11d79f2 KB |
567 | } |
568 | } | |
569 | ||
0fe7bf7b | 570 | /* qsort() comparison function for sorting pd_thread structs by pthid. */ |
c11d79f2 KB |
571 | |
572 | static int | |
573 | pcmp (const void *p1v, const void *p2v) | |
574 | { | |
575 | struct pd_thread *p1 = (struct pd_thread *) p1v; | |
576 | struct pd_thread *p2 = (struct pd_thread *) p2v; | |
577 | return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid; | |
578 | } | |
579 | ||
0fe7bf7b | 580 | /* iterate_over_threads() callback for counting GDB threads. */ |
c11d79f2 KB |
581 | |
582 | static int | |
583 | giter_count (struct thread_info *thread, void *countp) | |
584 | { | |
585 | (*(int *) countp)++; | |
586 | return 0; | |
587 | } | |
588 | ||
0fe7bf7b | 589 | /* iterate_over_threads() callback for accumulating GDB thread pids. */ |
c11d79f2 KB |
590 | |
591 | static int | |
592 | giter_accum (struct thread_info *thread, void *bufp) | |
593 | { | |
594 | **(struct thread_info ***) bufp = thread; | |
595 | (*(struct thread_info ***) bufp)++; | |
596 | return 0; | |
597 | } | |
598 | ||
599 | /* ptid comparison function */ | |
0fe7bf7b | 600 | |
c11d79f2 KB |
601 | static int |
602 | ptid_cmp (ptid_t ptid1, ptid_t ptid2) | |
603 | { | |
604 | int pid1, pid2; | |
605 | ||
606 | if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2)) | |
607 | return -1; | |
608 | else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2)) | |
609 | return 1; | |
610 | else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2)) | |
611 | return -1; | |
612 | else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2)) | |
613 | return 1; | |
614 | else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2)) | |
615 | return -1; | |
616 | else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2)) | |
617 | return 1; | |
618 | else | |
619 | return 0; | |
620 | } | |
621 | ||
0fe7bf7b | 622 | /* qsort() comparison function for sorting thread_info structs by pid. */ |
c11d79f2 KB |
623 | |
624 | static int | |
625 | gcmp (const void *t1v, const void *t2v) | |
626 | { | |
627 | struct thread_info *t1 = *(struct thread_info **) t1v; | |
628 | struct thread_info *t2 = *(struct thread_info **) t2v; | |
629 | return ptid_cmp (t1->ptid, t2->ptid); | |
630 | } | |
631 | ||
9ad7bec7 JB |
632 | /* Search through the list of all kernel threads for the thread |
633 | that has stopped on a SIGTRAP signal, and return its TID. | |
634 | Return 0 if none found. */ | |
635 | ||
636 | static pthdb_tid_t | |
637 | get_signaled_thread (void) | |
638 | { | |
639 | struct thrdsinfo64 thrinf; | |
640 | pthdb_tid_t ktid = 0; | |
641 | int result = 0; | |
642 | ||
643 | /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */ | |
644 | extern int getthrds (pid_t, struct thrdsinfo64 *, | |
645 | int, pthdb_tid_t *, int); | |
646 | ||
647 | while (1) | |
648 | { | |
649 | if (getthrds (PIDGET (inferior_ptid), &thrinf, | |
650 | sizeof (thrinf), &ktid, 1) != 1) | |
651 | break; | |
652 | ||
653 | if (thrinf.ti_cursig == SIGTRAP) | |
654 | return thrinf.ti_tid; | |
655 | } | |
656 | ||
657 | /* Didn't find any thread stopped on a SIGTRAP signal. */ | |
658 | return 0; | |
659 | } | |
660 | ||
c11d79f2 KB |
661 | /* Synchronize GDB's thread list with libpthdebug's. |
662 | ||
663 | There are some benefits of doing this every time the inferior stops: | |
664 | ||
0fe7bf7b MS |
665 | - allows users to run thread-specific commands without needing to |
666 | run "info threads" first | |
c11d79f2 KB |
667 | |
668 | - helps pthdb_tid_pthread() work properly (see "libpthdebug | |
669 | peculiarities" at the top of this module) | |
670 | ||
0fe7bf7b MS |
671 | - simplifies the demands placed on libpthdebug, which seems to |
672 | have difficulty with certain call patterns */ | |
c11d79f2 KB |
673 | |
674 | static void | |
675 | sync_threadlists (void) | |
676 | { | |
677 | int cmd, status, infpid; | |
678 | int pcount, psize, pi, gcount, gi; | |
679 | struct pd_thread *pbuf; | |
680 | struct thread_info **gbuf, **g, *thread; | |
681 | pthdb_pthread_t pdtid; | |
682 | pthread_t pthid; | |
683 | pthdb_tid_t tid; | |
c11d79f2 | 684 | |
0fe7bf7b | 685 | /* Accumulate an array of libpthdebug threads sorted by pthread id. */ |
c11d79f2 KB |
686 | |
687 | pcount = 0; | |
688 | psize = 1; | |
689 | pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf); | |
690 | ||
691 | for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT) | |
692 | { | |
693 | status = pthdb_pthread (pd_session, &pdtid, cmd); | |
694 | if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD) | |
695 | break; | |
696 | ||
697 | status = pthdb_pthread_ptid (pd_session, pdtid, &pthid); | |
698 | if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID) | |
699 | continue; | |
700 | ||
701 | if (pcount == psize) | |
702 | { | |
703 | psize *= 2; | |
0fe7bf7b MS |
704 | pbuf = (struct pd_thread *) xrealloc (pbuf, |
705 | psize * sizeof *pbuf); | |
c11d79f2 KB |
706 | } |
707 | pbuf[pcount].pdtid = pdtid; | |
708 | pbuf[pcount].pthid = pthid; | |
709 | pcount++; | |
710 | } | |
711 | ||
712 | for (pi = 0; pi < pcount; pi++) | |
713 | { | |
714 | status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid); | |
715 | if (status != PTHDB_SUCCESS) | |
716 | tid = PTHDB_INVALID_TID; | |
717 | pbuf[pi].tid = tid; | |
718 | } | |
719 | ||
720 | qsort (pbuf, pcount, sizeof *pbuf, pcmp); | |
721 | ||
0fe7bf7b | 722 | /* Accumulate an array of GDB threads sorted by pid. */ |
c11d79f2 KB |
723 | |
724 | gcount = 0; | |
725 | iterate_over_threads (giter_count, &gcount); | |
726 | g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf); | |
727 | iterate_over_threads (giter_accum, &g); | |
728 | qsort (gbuf, gcount, sizeof *gbuf, gcmp); | |
729 | ||
0fe7bf7b | 730 | /* Apply differences between the two arrays to GDB's thread list. */ |
c11d79f2 KB |
731 | |
732 | infpid = PIDGET (inferior_ptid); | |
733 | for (pi = gi = 0; pi < pcount || gi < gcount;) | |
734 | { | |
c11d79f2 | 735 | if (pi == pcount) |
c11d79f2 | 736 | { |
42cc437f | 737 | delete_thread (gbuf[gi]->ptid); |
c11d79f2 KB |
738 | gi++; |
739 | } | |
42cc437f | 740 | else if (gi == gcount) |
c11d79f2 | 741 | { |
42cc437f | 742 | thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid)); |
c11d79f2 | 743 | thread->private = xmalloc (sizeof (struct private_thread_info)); |
42cc437f KB |
744 | thread->private->pdtid = pbuf[pi].pdtid; |
745 | thread->private->tid = pbuf[pi].tid; | |
c11d79f2 KB |
746 | pi++; |
747 | } | |
42cc437f KB |
748 | else |
749 | { | |
750 | ptid_t pptid, gptid; | |
751 | int cmp_result; | |
752 | ||
753 | pptid = BUILD_THREAD (pbuf[pi].pthid, infpid); | |
754 | gptid = gbuf[gi]->ptid; | |
755 | pdtid = pbuf[pi].pdtid; | |
756 | tid = pbuf[pi].tid; | |
c11d79f2 | 757 | |
42cc437f KB |
758 | cmp_result = ptid_cmp (pptid, gptid); |
759 | ||
760 | if (cmp_result == 0) | |
761 | { | |
762 | gbuf[gi]->private->pdtid = pdtid; | |
763 | gbuf[gi]->private->tid = tid; | |
764 | pi++; | |
765 | gi++; | |
766 | } | |
767 | else if (cmp_result > 0) | |
768 | { | |
769 | delete_thread (gptid); | |
770 | gi++; | |
771 | } | |
772 | else | |
773 | { | |
774 | thread = add_thread (pptid); | |
775 | thread->private = xmalloc (sizeof (struct private_thread_info)); | |
776 | thread->private->pdtid = pdtid; | |
777 | thread->private->tid = tid; | |
778 | pi++; | |
779 | } | |
780 | } | |
c11d79f2 KB |
781 | } |
782 | ||
783 | xfree (pbuf); | |
784 | xfree (gbuf); | |
785 | } | |
786 | ||
9ad7bec7 JB |
787 | /* Iterate_over_threads() callback for locating a thread, using |
788 | the TID of its associated kernel thread. */ | |
c11d79f2 KB |
789 | |
790 | static int | |
9ad7bec7 | 791 | iter_tid (struct thread_info *thread, void *tidp) |
c11d79f2 | 792 | { |
9ad7bec7 | 793 | const pthdb_tid_t tid = *(pthdb_tid_t *)tidp; |
c11d79f2 | 794 | |
9ad7bec7 | 795 | return (thread->private->tid == tid); |
c11d79f2 KB |
796 | } |
797 | ||
0fe7bf7b MS |
798 | /* Synchronize libpthdebug's state with the inferior and with GDB, |
799 | generate a composite process/thread <pid> for the current thread, | |
800 | set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */ | |
c11d79f2 KB |
801 | |
802 | static ptid_t | |
803 | pd_update (int set_infpid) | |
804 | { | |
805 | int status; | |
806 | ptid_t ptid; | |
9ad7bec7 JB |
807 | pthdb_tid_t tid; |
808 | struct thread_info *thread = NULL; | |
c11d79f2 KB |
809 | |
810 | if (!pd_active) | |
811 | return inferior_ptid; | |
812 | ||
813 | status = pthdb_session_update (pd_session); | |
814 | if (status != PTHDB_SUCCESS) | |
815 | return inferior_ptid; | |
816 | ||
817 | sync_threadlists (); | |
818 | ||
0fe7bf7b | 819 | /* Define "current thread" as one that just received a trap signal. */ |
c11d79f2 | 820 | |
9ad7bec7 JB |
821 | tid = get_signaled_thread (); |
822 | if (tid != 0) | |
823 | thread = iterate_over_threads (iter_tid, &tid); | |
c11d79f2 KB |
824 | if (!thread) |
825 | ptid = inferior_ptid; | |
826 | else | |
827 | { | |
828 | ptid = thread->ptid; | |
829 | if (set_infpid) | |
830 | inferior_ptid = ptid; | |
831 | } | |
832 | return ptid; | |
833 | } | |
834 | ||
0fe7bf7b MS |
835 | /* Try to start debugging threads in the current process. |
836 | If successful and SET_INFPID, set inferior_ptid to reflect the | |
837 | current thread. */ | |
c11d79f2 KB |
838 | |
839 | static ptid_t | |
840 | pd_activate (int set_infpid) | |
841 | { | |
842 | int status; | |
843 | ||
844 | status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT, | |
0fe7bf7b MS |
845 | PTHDB_FLAG_REGS, &pd_callbacks, |
846 | &pd_session); | |
c11d79f2 KB |
847 | if (status != PTHDB_SUCCESS) |
848 | { | |
849 | return inferior_ptid; | |
850 | } | |
851 | pd_active = 1; | |
852 | return pd_update (set_infpid); | |
853 | } | |
854 | ||
0fe7bf7b | 855 | /* Undo the effects of pd_activate(). */ |
c11d79f2 KB |
856 | |
857 | static void | |
858 | pd_deactivate (void) | |
859 | { | |
860 | if (!pd_active) | |
861 | return; | |
862 | pthdb_session_destroy (pd_session); | |
863 | ||
864 | pid_to_prc (&inferior_ptid); | |
865 | pd_active = 0; | |
866 | } | |
867 | ||
0fe7bf7b MS |
868 | /* An object file has just been loaded. Check whether the current |
869 | application is pthreaded, and if so, prepare for thread debugging. */ | |
c11d79f2 KB |
870 | |
871 | static void | |
872 | pd_enable (void) | |
873 | { | |
874 | int status; | |
875 | char *stub_name; | |
876 | struct minimal_symbol *ms; | |
877 | ||
0fe7bf7b | 878 | /* Don't initialize twice. */ |
c11d79f2 KB |
879 | if (pd_able) |
880 | return; | |
881 | ||
0fe7bf7b | 882 | /* Check application word size. */ |
3acba339 | 883 | arch64 = register_size (current_gdbarch, 0) == 8; |
c11d79f2 | 884 | |
0fe7bf7b | 885 | /* Check whether the application is pthreaded. */ |
c11d79f2 | 886 | stub_name = NULL; |
0fe7bf7b MS |
887 | status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS, |
888 | &pd_callbacks, &stub_name); | |
889 | if ((status != PTHDB_SUCCESS && | |
890 | status != PTHDB_NOT_PTHREADED) || !stub_name) | |
c11d79f2 KB |
891 | return; |
892 | ||
0fe7bf7b | 893 | /* Set a breakpoint on the returned stub function. */ |
c11d79f2 KB |
894 | if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL))) |
895 | return; | |
896 | pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms); | |
897 | if (!create_thread_event_breakpoint (pd_brk_addr)) | |
898 | return; | |
899 | ||
0fe7bf7b | 900 | /* Prepare for thread debugging. */ |
206d3d3c KB |
901 | base_target = current_target; |
902 | push_target (&aix_thread_ops); | |
c11d79f2 KB |
903 | pd_able = 1; |
904 | ||
0fe7bf7b MS |
905 | /* If we're debugging a core file or an attached inferior, the |
906 | pthread library may already have been initialized, so try to | |
907 | activate thread debugging. */ | |
c11d79f2 KB |
908 | pd_activate (1); |
909 | } | |
910 | ||
0fe7bf7b | 911 | /* Undo the effects of pd_enable(). */ |
c11d79f2 KB |
912 | |
913 | static void | |
914 | pd_disable (void) | |
915 | { | |
916 | if (!pd_able) | |
917 | return; | |
918 | if (pd_active) | |
919 | pd_deactivate (); | |
920 | pd_able = 0; | |
206d3d3c | 921 | unpush_target (&aix_thread_ops); |
c11d79f2 KB |
922 | } |
923 | ||
06d3b283 | 924 | /* new_objfile observer callback. |
c11d79f2 | 925 | |
0fe7bf7b MS |
926 | If OBJFILE is non-null, check whether a threaded application is |
927 | being debugged, and if so, prepare for thread debugging. | |
c11d79f2 | 928 | |
0fe7bf7b | 929 | If OBJFILE is null, stop debugging threads. */ |
c11d79f2 KB |
930 | |
931 | static void | |
932 | new_objfile (struct objfile *objfile) | |
933 | { | |
934 | if (objfile) | |
935 | pd_enable (); | |
936 | else | |
937 | pd_disable (); | |
c11d79f2 KB |
938 | } |
939 | ||
0fe7bf7b | 940 | /* Attach to process specified by ARGS. */ |
c11d79f2 KB |
941 | |
942 | static void | |
206d3d3c | 943 | aix_thread_attach (char *args, int from_tty) |
c11d79f2 | 944 | { |
206d3d3c | 945 | base_target.to_attach (args, from_tty); |
c11d79f2 KB |
946 | pd_activate (1); |
947 | } | |
948 | ||
206d3d3c | 949 | /* Detach from the process attached to by aix_thread_attach(). */ |
c11d79f2 KB |
950 | |
951 | static void | |
206d3d3c | 952 | aix_thread_detach (char *args, int from_tty) |
c11d79f2 | 953 | { |
6c0c456d | 954 | pd_disable (); |
206d3d3c | 955 | base_target.to_detach (args, from_tty); |
c11d79f2 KB |
956 | } |
957 | ||
958 | /* Tell the inferior process to continue running thread PID if != -1 | |
0fe7bf7b | 959 | and all threads otherwise. */ |
c11d79f2 KB |
960 | |
961 | static void | |
206d3d3c | 962 | aix_thread_resume (ptid_t ptid, int step, enum target_signal sig) |
c11d79f2 KB |
963 | { |
964 | struct thread_info *thread; | |
965 | pthdb_tid_t tid[2]; | |
966 | ||
967 | if (!PD_TID (ptid)) | |
14fa3751 KB |
968 | { |
969 | struct cleanup *cleanup = save_inferior_ptid (); | |
970 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c | 971 | base_target.to_resume (ptid, step, sig); |
14fa3751 KB |
972 | do_cleanups (cleanup); |
973 | } | |
c11d79f2 KB |
974 | else |
975 | { | |
976 | thread = find_thread_pid (ptid); | |
977 | if (!thread) | |
edefbb7c | 978 | error (_("aix-thread resume: unknown pthread %ld"), |
0fe7bf7b | 979 | TIDGET (ptid)); |
c11d79f2 KB |
980 | |
981 | tid[0] = thread->private->tid; | |
982 | if (tid[0] == PTHDB_INVALID_TID) | |
edefbb7c | 983 | error (_("aix-thread resume: no tid for pthread %ld"), |
0fe7bf7b | 984 | TIDGET (ptid)); |
c11d79f2 KB |
985 | tid[1] = 0; |
986 | ||
987 | if (arch64) | |
0fe7bf7b | 988 | ptrace64aix (PTT_CONTINUE, tid[0], 1, |
206d3d3c | 989 | target_signal_to_host (sig), (int *) tid); |
c11d79f2 KB |
990 | else |
991 | ptrace32 (PTT_CONTINUE, tid[0], (int *) 1, | |
206d3d3c | 992 | target_signal_to_host (sig), (int *) tid); |
c11d79f2 KB |
993 | } |
994 | } | |
995 | ||
0fe7bf7b MS |
996 | /* Wait for thread/process ID if != -1 or for any thread otherwise. |
997 | If an error occurs, return -1, else return the pid of the stopped | |
998 | thread. */ | |
c11d79f2 KB |
999 | |
1000 | static ptid_t | |
206d3d3c | 1001 | aix_thread_wait (ptid_t ptid, struct target_waitstatus *status) |
c11d79f2 | 1002 | { |
14fa3751 KB |
1003 | struct cleanup *cleanup = save_inferior_ptid (); |
1004 | ||
c11d79f2 | 1005 | pid_to_prc (&ptid); |
14fa3751 KB |
1006 | |
1007 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c | 1008 | ptid = base_target.to_wait (ptid, status); |
14fa3751 KB |
1009 | do_cleanups (cleanup); |
1010 | ||
c11d79f2 KB |
1011 | if (PIDGET (ptid) == -1) |
1012 | return pid_to_ptid (-1); | |
1013 | ||
0fe7bf7b | 1014 | /* Check whether libpthdebug might be ready to be initialized. */ |
c11d79f2 KB |
1015 | if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED && |
1016 | status->value.sig == TARGET_SIGNAL_TRAP && | |
1017 | read_pc_pid (ptid) - DECR_PC_AFTER_BREAK == pd_brk_addr) | |
1018 | return pd_activate (0); | |
1019 | ||
1020 | return pd_update (0); | |
1021 | } | |
1022 | ||
0fe7bf7b | 1023 | /* Record that the 64-bit general-purpose registers contain VALS. */ |
c11d79f2 KB |
1024 | |
1025 | static void | |
647478e0 | 1026 | supply_gprs64 (struct regcache *regcache, uint64_t *vals) |
c11d79f2 | 1027 | { |
cdf2c5f5 | 1028 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1029 | int regno; |
1030 | ||
063715bf | 1031 | for (regno = 0; regno < ppc_num_gprs; regno++) |
647478e0 | 1032 | regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + regno, |
23a6d369 | 1033 | (char *) (vals + regno)); |
c11d79f2 KB |
1034 | } |
1035 | ||
0fe7bf7b | 1036 | /* Record that 32-bit register REGNO contains VAL. */ |
c11d79f2 KB |
1037 | |
1038 | static void | |
647478e0 | 1039 | supply_reg32 (struct regcache *regcache, int regno, uint32_t val) |
c11d79f2 | 1040 | { |
647478e0 | 1041 | regcache_raw_supply (regcache, regno, (char *) &val); |
c11d79f2 KB |
1042 | } |
1043 | ||
0fe7bf7b | 1044 | /* Record that the floating-point registers contain VALS. */ |
c11d79f2 KB |
1045 | |
1046 | static void | |
647478e0 | 1047 | supply_fprs (struct regcache *regcache, double *vals) |
c11d79f2 | 1048 | { |
366f009f | 1049 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1050 | int regno; |
1051 | ||
383f0f5b JB |
1052 | /* This function should never be called on architectures without |
1053 | floating-point registers. */ | |
552e377b | 1054 | gdb_assert (ppc_floating_point_unit_p (current_gdbarch)); |
383f0f5b | 1055 | |
063715bf | 1056 | for (regno = 0; regno < ppc_num_fprs; regno++) |
647478e0 | 1057 | regcache_raw_supply (regcache, regno + tdep->ppc_fp0_regnum, |
23a6d369 | 1058 | (char *) (vals + regno)); |
c11d79f2 KB |
1059 | } |
1060 | ||
f1a91342 KB |
1061 | /* Predicate to test whether given register number is a "special" register. */ |
1062 | static int | |
1063 | special_register_p (int regno) | |
1064 | { | |
1065 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); | |
1066 | ||
1067 | return regno == PC_REGNUM | |
1068 | || regno == tdep->ppc_ps_regnum | |
1069 | || regno == tdep->ppc_cr_regnum | |
1070 | || regno == tdep->ppc_lr_regnum | |
1071 | || regno == tdep->ppc_ctr_regnum | |
1072 | || regno == tdep->ppc_xer_regnum | |
383f0f5b | 1073 | || (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_regnum) |
f1a91342 KB |
1074 | || (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum); |
1075 | } | |
1076 | ||
1077 | ||
0fe7bf7b MS |
1078 | /* Record that the special registers contain the specified 64-bit and |
1079 | 32-bit values. */ | |
c11d79f2 KB |
1080 | |
1081 | static void | |
647478e0 UW |
1082 | supply_sprs64 (struct regcache *regcache, |
1083 | uint64_t iar, uint64_t msr, uint32_t cr, | |
0e061eef KB |
1084 | uint64_t lr, uint64_t ctr, uint32_t xer, |
1085 | uint32_t fpscr) | |
c11d79f2 | 1086 | { |
f1a91342 KB |
1087 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1088 | ||
647478e0 UW |
1089 | regcache_raw_supply (regcache, PC_REGNUM, (char *) &iar); |
1090 | regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr); | |
1091 | regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr); | |
1092 | regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr); | |
1093 | regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr); | |
1094 | regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer); | |
383f0f5b | 1095 | if (tdep->ppc_fpscr_regnum >= 0) |
647478e0 | 1096 | regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum, |
23a6d369 | 1097 | (char *) &fpscr); |
c11d79f2 KB |
1098 | } |
1099 | ||
0fe7bf7b MS |
1100 | /* Record that the special registers contain the specified 32-bit |
1101 | values. */ | |
c11d79f2 KB |
1102 | |
1103 | static void | |
647478e0 UW |
1104 | supply_sprs32 (struct regcache *regcache, |
1105 | uint32_t iar, uint32_t msr, uint32_t cr, | |
0e061eef KB |
1106 | uint32_t lr, uint32_t ctr, uint32_t xer, |
1107 | uint32_t fpscr) | |
c11d79f2 | 1108 | { |
f1a91342 KB |
1109 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1110 | ||
647478e0 UW |
1111 | regcache_raw_supply (regcache, PC_REGNUM, (char *) &iar); |
1112 | regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr); | |
1113 | regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr); | |
1114 | regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr); | |
1115 | regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr); | |
1116 | regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer); | |
383f0f5b | 1117 | if (tdep->ppc_fpscr_regnum >= 0) |
647478e0 | 1118 | regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum, |
23a6d369 | 1119 | (char *) &fpscr); |
c11d79f2 KB |
1120 | } |
1121 | ||
1122 | /* Fetch all registers from pthread PDTID, which doesn't have a kernel | |
1123 | thread. | |
1124 | ||
0fe7bf7b MS |
1125 | There's no way to query a single register from a non-kernel |
1126 | pthread, so there's no need for a single-register version of this | |
1127 | function. */ | |
c11d79f2 KB |
1128 | |
1129 | static void | |
647478e0 | 1130 | fetch_regs_user_thread (struct regcache *regcache, pthdb_pthread_t pdtid) |
c11d79f2 | 1131 | { |
cdf2c5f5 | 1132 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1133 | int status, i; |
1134 | pthdb_context_t ctx; | |
1135 | ||
8e2c28d4 | 1136 | if (debug_aix_thread) |
206d3d3c KB |
1137 | fprintf_unfiltered (gdb_stdlog, |
1138 | "fetch_regs_user_thread %lx\n", (long) pdtid); | |
c11d79f2 KB |
1139 | status = pthdb_pthread_context (pd_session, pdtid, &ctx); |
1140 | if (status != PTHDB_SUCCESS) | |
edefbb7c | 1141 | error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"), |
14fa3751 | 1142 | pd_status2str (status)); |
c11d79f2 | 1143 | |
0fe7bf7b | 1144 | /* General-purpose registers. */ |
c11d79f2 KB |
1145 | |
1146 | if (arch64) | |
647478e0 | 1147 | supply_gprs64 (regcache, ctx.gpr); |
c11d79f2 | 1148 | else |
063715bf | 1149 | for (i = 0; i < ppc_num_gprs; i++) |
647478e0 | 1150 | supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, ctx.gpr[i]); |
c11d79f2 | 1151 | |
0fe7bf7b | 1152 | /* Floating-point registers. */ |
c11d79f2 | 1153 | |
552e377b | 1154 | if (ppc_floating_point_unit_p (current_gdbarch)) |
647478e0 | 1155 | supply_fprs (regcache, ctx.fpr); |
c11d79f2 | 1156 | |
0fe7bf7b | 1157 | /* Special registers. */ |
c11d79f2 KB |
1158 | |
1159 | if (arch64) | |
647478e0 UW |
1160 | supply_sprs64 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, |
1161 | ctx.xer, ctx.fpscr); | |
c11d79f2 | 1162 | else |
647478e0 UW |
1163 | supply_sprs32 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, |
1164 | ctx.xer, ctx.fpscr); | |
c11d79f2 KB |
1165 | } |
1166 | ||
0fe7bf7b MS |
1167 | /* Fetch register REGNO if != -1 or all registers otherwise from |
1168 | kernel thread TID. | |
c11d79f2 | 1169 | |
0fe7bf7b MS |
1170 | AIX provides a way to query all of a kernel thread's GPRs, FPRs, or |
1171 | SPRs, but there's no way to query individual registers within those | |
1172 | groups. Therefore, if REGNO != -1, this function fetches an entire | |
1173 | group. | |
c11d79f2 | 1174 | |
0fe7bf7b MS |
1175 | Unfortunately, kernel thread register queries often fail with |
1176 | EPERM, indicating that the thread is in kernel space. This breaks | |
1177 | backtraces of threads other than the current one. To make that | |
1178 | breakage obvious without throwing an error to top level (which is | |
1179 | bad e.g. during "info threads" output), zero registers that can't | |
1180 | be retrieved. */ | |
c11d79f2 KB |
1181 | |
1182 | static void | |
647478e0 UW |
1183 | fetch_regs_kernel_thread (struct regcache *regcache, int regno, |
1184 | pthdb_tid_t tid) | |
c11d79f2 | 1185 | { |
366f009f | 1186 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
063715bf JB |
1187 | uint64_t gprs64[ppc_num_gprs]; |
1188 | uint32_t gprs32[ppc_num_gprs]; | |
1189 | double fprs[ppc_num_fprs]; | |
c11d79f2 KB |
1190 | struct ptxsprs sprs64; |
1191 | struct ptsprs sprs32; | |
1192 | int i; | |
1193 | ||
8e2c28d4 KB |
1194 | if (debug_aix_thread) |
1195 | fprintf_unfiltered (gdb_stdlog, | |
206d3d3c KB |
1196 | "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n", |
1197 | (long) tid, regno, arch64); | |
c11d79f2 | 1198 | |
0fe7bf7b | 1199 | /* General-purpose registers. */ |
daf6dc85 JB |
1200 | if (regno == -1 |
1201 | || (tdep->ppc_gp0_regnum <= regno | |
1202 | && regno < tdep->ppc_gp0_regnum + ppc_num_gprs)) | |
c11d79f2 KB |
1203 | { |
1204 | if (arch64) | |
1205 | { | |
0fe7bf7b MS |
1206 | if (!ptrace64aix (PTT_READ_GPRS, tid, |
1207 | (unsigned long) gprs64, 0, NULL)) | |
c11d79f2 | 1208 | memset (gprs64, 0, sizeof (gprs64)); |
647478e0 | 1209 | supply_gprs64 (regcache, gprs64); |
c11d79f2 KB |
1210 | } |
1211 | else | |
1212 | { | |
1213 | if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL)) | |
1214 | memset (gprs32, 0, sizeof (gprs32)); | |
063715bf | 1215 | for (i = 0; i < ppc_num_gprs; i++) |
647478e0 | 1216 | supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, gprs32[i]); |
c11d79f2 KB |
1217 | } |
1218 | } | |
1219 | ||
0fe7bf7b | 1220 | /* Floating-point registers. */ |
c11d79f2 | 1221 | |
383f0f5b JB |
1222 | if (ppc_floating_point_unit_p (current_gdbarch) |
1223 | && (regno == -1 | |
1224 | || (regno >= tdep->ppc_fp0_regnum | |
1225 | && regno < tdep->ppc_fp0_regnum + ppc_num_fprs))) | |
c11d79f2 KB |
1226 | { |
1227 | if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL)) | |
1228 | memset (fprs, 0, sizeof (fprs)); | |
647478e0 | 1229 | supply_fprs (regcache, fprs); |
c11d79f2 KB |
1230 | } |
1231 | ||
0fe7bf7b | 1232 | /* Special-purpose registers. */ |
c11d79f2 | 1233 | |
f1a91342 | 1234 | if (regno == -1 || special_register_p (regno)) |
c11d79f2 KB |
1235 | { |
1236 | if (arch64) | |
1237 | { | |
0fe7bf7b MS |
1238 | if (!ptrace64aix (PTT_READ_SPRS, tid, |
1239 | (unsigned long) &sprs64, 0, NULL)) | |
c11d79f2 | 1240 | memset (&sprs64, 0, sizeof (sprs64)); |
647478e0 UW |
1241 | supply_sprs64 (regcache, sprs64.pt_iar, sprs64.pt_msr, |
1242 | sprs64.pt_cr, sprs64.pt_lr, sprs64.pt_ctr, | |
1243 | sprs64.pt_xer, sprs64.pt_fpscr); | |
c11d79f2 KB |
1244 | } |
1245 | else | |
1246 | { | |
f1a91342 KB |
1247 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1248 | ||
c11d79f2 KB |
1249 | if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL)) |
1250 | memset (&sprs32, 0, sizeof (sprs32)); | |
647478e0 | 1251 | supply_sprs32 (regcache, sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr, |
0e061eef KB |
1252 | sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer, |
1253 | sprs32.pt_fpscr); | |
c11d79f2 | 1254 | |
f1a91342 | 1255 | if (tdep->ppc_mq_regnum >= 0) |
647478e0 | 1256 | regcache_raw_supply (regcache, tdep->ppc_mq_regnum, |
23a6d369 | 1257 | (char *) &sprs32.pt_mq); |
c11d79f2 KB |
1258 | } |
1259 | } | |
1260 | } | |
1261 | ||
1262 | /* Fetch register REGNO if != -1 or all registers otherwise in the | |
0fe7bf7b | 1263 | thread/process specified by inferior_ptid. */ |
c11d79f2 KB |
1264 | |
1265 | static void | |
56be3814 | 1266 | aix_thread_fetch_registers (struct regcache *regcache, int regno) |
c11d79f2 KB |
1267 | { |
1268 | struct thread_info *thread; | |
1269 | pthdb_tid_t tid; | |
1270 | ||
1271 | if (!PD_TID (inferior_ptid)) | |
56be3814 | 1272 | base_target.to_fetch_registers (regcache, regno); |
c11d79f2 KB |
1273 | else |
1274 | { | |
1275 | thread = find_thread_pid (inferior_ptid); | |
1276 | tid = thread->private->tid; | |
1277 | ||
1278 | if (tid == PTHDB_INVALID_TID) | |
56be3814 | 1279 | fetch_regs_user_thread (regcache, thread->private->pdtid); |
c11d79f2 | 1280 | else |
56be3814 | 1281 | fetch_regs_kernel_thread (regcache, regno, tid); |
c11d79f2 KB |
1282 | } |
1283 | } | |
1284 | ||
61c5da0b KB |
1285 | /* Store the gp registers into an array of uint32_t or uint64_t. */ |
1286 | ||
1287 | static void | |
647478e0 | 1288 | fill_gprs64 (const struct regcache *regcache, uint64_t *vals) |
61c5da0b | 1289 | { |
366f009f | 1290 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
61c5da0b KB |
1291 | int regno; |
1292 | ||
daf6dc85 | 1293 | for (regno = 0; regno < ppc_num_gprs; regno++) |
647478e0 UW |
1294 | if (regcache_valid_p (regcache, tdep->ppc_gp0_regnum + regno)) |
1295 | regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno, | |
822c9732 | 1296 | vals + regno); |
61c5da0b KB |
1297 | } |
1298 | ||
1299 | static void | |
647478e0 | 1300 | fill_gprs32 (const struct regcache *regcache, uint32_t *vals) |
61c5da0b | 1301 | { |
366f009f | 1302 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
61c5da0b KB |
1303 | int regno; |
1304 | ||
daf6dc85 | 1305 | for (regno = 0; regno < ppc_num_gprs; regno++) |
647478e0 UW |
1306 | if (regcache_valid_p (regcache, tdep->ppc_gp0_regnum + regno)) |
1307 | regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno, | |
822c9732 | 1308 | vals + regno); |
61c5da0b KB |
1309 | } |
1310 | ||
1311 | /* Store the floating point registers into a double array. */ | |
1312 | static void | |
647478e0 | 1313 | fill_fprs (const struct regcache *regcache, double *vals) |
61c5da0b | 1314 | { |
366f009f | 1315 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
61c5da0b KB |
1316 | int regno; |
1317 | ||
383f0f5b JB |
1318 | /* This function should never be called on architectures without |
1319 | floating-point registers. */ | |
552e377b | 1320 | gdb_assert (ppc_floating_point_unit_p (current_gdbarch)); |
383f0f5b | 1321 | |
366f009f JB |
1322 | for (regno = tdep->ppc_fp0_regnum; |
1323 | regno < tdep->ppc_fp0_regnum + ppc_num_fprs; | |
1324 | regno++) | |
647478e0 UW |
1325 | if (regcache_valid_p (regcache, regno)) |
1326 | regcache_raw_collect (regcache, regno, vals + regno); | |
61c5da0b KB |
1327 | } |
1328 | ||
c11d79f2 | 1329 | /* Store the special registers into the specified 64-bit and 32-bit |
0fe7bf7b | 1330 | locations. */ |
c11d79f2 KB |
1331 | |
1332 | static void | |
647478e0 UW |
1333 | fill_sprs64 (const struct regcache *regcache, |
1334 | uint64_t *iar, uint64_t *msr, uint32_t *cr, | |
0e061eef KB |
1335 | uint64_t *lr, uint64_t *ctr, uint32_t *xer, |
1336 | uint32_t *fpscr) | |
c11d79f2 | 1337 | { |
f1a91342 KB |
1338 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1339 | ||
1340 | /* Verify that the size of the size of the IAR buffer is the | |
1341 | same as the raw size of the PC (in the register cache). If | |
1342 | they're not, then either GDB has been built incorrectly, or | |
1343 | there's some other kind of internal error. To be really safe, | |
1344 | we should check all of the sizes. */ | |
3acba339 | 1345 | gdb_assert (sizeof (*iar) == register_size (current_gdbarch, PC_REGNUM)); |
f1a91342 | 1346 | |
647478e0 UW |
1347 | if (regcache_valid_p (regcache, PC_REGNUM)) |
1348 | regcache_raw_collect (regcache, PC_REGNUM, iar); | |
1349 | if (regcache_valid_p (regcache, tdep->ppc_ps_regnum)) | |
1350 | regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr); | |
1351 | if (regcache_valid_p (regcache, tdep->ppc_cr_regnum)) | |
1352 | regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr); | |
1353 | if (regcache_valid_p (regcache, tdep->ppc_lr_regnum)) | |
1354 | regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr); | |
1355 | if (regcache_valid_p (regcache, tdep->ppc_ctr_regnum)) | |
1356 | regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr); | |
1357 | if (regcache_valid_p (regcache, tdep->ppc_xer_regnum)) | |
1358 | regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer); | |
383f0f5b | 1359 | if (tdep->ppc_fpscr_regnum >= 0 |
647478e0 UW |
1360 | && regcache_valid_p (regcache, tdep->ppc_fpscr_regnum)) |
1361 | regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr); | |
61c5da0b KB |
1362 | } |
1363 | ||
1364 | static void | |
647478e0 UW |
1365 | fill_sprs32 (const struct regcache *regcache, |
1366 | uint32_t *iar, uint32_t *msr, uint32_t *cr, | |
0d16ee5d UW |
1367 | uint32_t *lr, uint32_t *ctr, uint32_t *xer, |
1368 | uint32_t *fpscr) | |
61c5da0b | 1369 | { |
f1a91342 KB |
1370 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1371 | ||
1372 | /* Verify that the size of the size of the IAR buffer is the | |
1373 | same as the raw size of the PC (in the register cache). If | |
1374 | they're not, then either GDB has been built incorrectly, or | |
1375 | there's some other kind of internal error. To be really safe, | |
0d16ee5d | 1376 | we should check all of the sizes. */ |
3acba339 | 1377 | gdb_assert (sizeof (*iar) == register_size (current_gdbarch, PC_REGNUM)); |
f1a91342 | 1378 | |
647478e0 UW |
1379 | if (regcache_valid_p (regcache, PC_REGNUM)) |
1380 | regcache_raw_collect (regcache, PC_REGNUM, iar); | |
1381 | if (regcache_valid_p (regcache, tdep->ppc_ps_regnum)) | |
1382 | regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr); | |
1383 | if (regcache_valid_p (regcache, tdep->ppc_cr_regnum)) | |
1384 | regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr); | |
1385 | if (regcache_valid_p (regcache, tdep->ppc_lr_regnum)) | |
1386 | regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr); | |
1387 | if (regcache_valid_p (regcache, tdep->ppc_ctr_regnum)) | |
1388 | regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr); | |
1389 | if (regcache_valid_p (regcache, tdep->ppc_xer_regnum)) | |
1390 | regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer); | |
383f0f5b | 1391 | if (tdep->ppc_fpscr_regnum >= 0 |
647478e0 UW |
1392 | && regcache_valid_p (regcache, tdep->ppc_fpscr_regnum)) |
1393 | regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr); | |
c11d79f2 KB |
1394 | } |
1395 | ||
1396 | /* Store all registers into pthread PDTID, which doesn't have a kernel | |
1397 | thread. | |
1398 | ||
0fe7bf7b MS |
1399 | It's possible to store a single register into a non-kernel pthread, |
1400 | but I doubt it's worth the effort. */ | |
c11d79f2 KB |
1401 | |
1402 | static void | |
647478e0 | 1403 | store_regs_user_thread (const struct regcache *regcache, pthdb_pthread_t pdtid) |
c11d79f2 | 1404 | { |
cdf2c5f5 | 1405 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1406 | int status, i; |
1407 | pthdb_context_t ctx; | |
61c5da0b KB |
1408 | uint32_t int32; |
1409 | uint64_t int64; | |
1410 | double dbl; | |
c11d79f2 | 1411 | |
8e2c28d4 | 1412 | if (debug_aix_thread) |
0fe7bf7b | 1413 | fprintf_unfiltered (gdb_stdlog, |
206d3d3c | 1414 | "store_regs_user_thread %lx\n", (long) pdtid); |
c11d79f2 | 1415 | |
0fe7bf7b MS |
1416 | /* Retrieve the thread's current context for its non-register |
1417 | values. */ | |
c11d79f2 KB |
1418 | status = pthdb_pthread_context (pd_session, pdtid, &ctx); |
1419 | if (status != PTHDB_SUCCESS) | |
edefbb7c | 1420 | error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"), |
14fa3751 | 1421 | pd_status2str (status)); |
c11d79f2 | 1422 | |
61c5da0b | 1423 | /* Collect general-purpose register values from the regcache. */ |
c11d79f2 | 1424 | |
063715bf | 1425 | for (i = 0; i < ppc_num_gprs; i++) |
647478e0 | 1426 | if (regcache_valid_p (regcache, tdep->ppc_gp0_regnum + i)) |
cbe92db4 KB |
1427 | { |
1428 | if (arch64) | |
1429 | { | |
647478e0 | 1430 | regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i, |
822c9732 | 1431 | (void *) &int64); |
cbe92db4 KB |
1432 | ctx.gpr[i] = int64; |
1433 | } | |
1434 | else | |
1435 | { | |
647478e0 | 1436 | regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i, |
822c9732 | 1437 | (void *) &int32); |
cbe92db4 KB |
1438 | ctx.gpr[i] = int32; |
1439 | } | |
1440 | } | |
c11d79f2 | 1441 | |
61c5da0b | 1442 | /* Collect floating-point register values from the regcache. */ |
552e377b | 1443 | if (ppc_floating_point_unit_p (current_gdbarch)) |
647478e0 | 1444 | fill_fprs (regcache, ctx.fpr); |
c11d79f2 | 1445 | |
61c5da0b KB |
1446 | /* Special registers (always kept in ctx as 64 bits). */ |
1447 | if (arch64) | |
1448 | { | |
647478e0 UW |
1449 | fill_sprs64 (regcache, &ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr, |
1450 | &ctx.xer, &ctx.fpscr); | |
61c5da0b KB |
1451 | } |
1452 | else | |
1453 | { | |
1454 | /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32. | |
0d16ee5d UW |
1455 | Solution: use 32-bit temp variables. */ |
1456 | uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer, | |
1457 | tmp_fpscr; | |
61c5da0b | 1458 | |
647478e0 UW |
1459 | fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr, |
1460 | &tmp_xer, &tmp_fpscr); | |
1461 | if (regcache_valid_p (regcache, PC_REGNUM)) | |
cbe92db4 | 1462 | ctx.iar = tmp_iar; |
647478e0 | 1463 | if (regcache_valid_p (regcache, tdep->ppc_ps_regnum)) |
cbe92db4 | 1464 | ctx.msr = tmp_msr; |
647478e0 | 1465 | if (regcache_valid_p (regcache, tdep->ppc_cr_regnum)) |
cbe92db4 | 1466 | ctx.cr = tmp_cr; |
647478e0 | 1467 | if (regcache_valid_p (regcache, tdep->ppc_lr_regnum)) |
cbe92db4 | 1468 | ctx.lr = tmp_lr; |
647478e0 | 1469 | if (regcache_valid_p (regcache, tdep->ppc_ctr_regnum)) |
cbe92db4 | 1470 | ctx.ctr = tmp_ctr; |
647478e0 | 1471 | if (regcache_valid_p (regcache, tdep->ppc_xer_regnum)) |
cbe92db4 | 1472 | ctx.xer = tmp_xer; |
647478e0 | 1473 | if (regcache_valid_p (regcache, tdep->ppc_xer_regnum)) |
0e061eef | 1474 | ctx.fpscr = tmp_fpscr; |
61c5da0b | 1475 | } |
c11d79f2 KB |
1476 | |
1477 | status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx); | |
1478 | if (status != PTHDB_SUCCESS) | |
edefbb7c | 1479 | error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"), |
14fa3751 | 1480 | pd_status2str (status)); |
c11d79f2 KB |
1481 | } |
1482 | ||
0fe7bf7b MS |
1483 | /* Store register REGNO if != -1 or all registers otherwise into |
1484 | kernel thread TID. | |
c11d79f2 | 1485 | |
0fe7bf7b MS |
1486 | AIX provides a way to set all of a kernel thread's GPRs, FPRs, or |
1487 | SPRs, but there's no way to set individual registers within those | |
1488 | groups. Therefore, if REGNO != -1, this function stores an entire | |
1489 | group. */ | |
c11d79f2 KB |
1490 | |
1491 | static void | |
647478e0 UW |
1492 | store_regs_kernel_thread (const struct regcache *regcache, int regno, |
1493 | pthdb_tid_t tid) | |
c11d79f2 | 1494 | { |
366f009f | 1495 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
063715bf JB |
1496 | uint64_t gprs64[ppc_num_gprs]; |
1497 | uint32_t gprs32[ppc_num_gprs]; | |
1498 | double fprs[ppc_num_fprs]; | |
c11d79f2 | 1499 | struct ptxsprs sprs64; |
61c5da0b KB |
1500 | struct ptsprs sprs32; |
1501 | int i; | |
c11d79f2 | 1502 | |
8e2c28d4 | 1503 | if (debug_aix_thread) |
206d3d3c KB |
1504 | fprintf_unfiltered (gdb_stdlog, |
1505 | "store_regs_kernel_thread tid=%lx regno=%d\n", | |
1506 | (long) tid, regno); | |
c11d79f2 | 1507 | |
0fe7bf7b | 1508 | /* General-purpose registers. */ |
daf6dc85 JB |
1509 | if (regno == -1 |
1510 | || (tdep->ppc_gp0_regnum <= regno | |
1511 | && regno < tdep->ppc_gp0_regnum + ppc_num_fprs)) | |
c11d79f2 | 1512 | { |
c11d79f2 | 1513 | if (arch64) |
61c5da0b | 1514 | { |
cbe92db4 KB |
1515 | /* Pre-fetch: some regs may not be in the cache. */ |
1516 | ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL); | |
647478e0 | 1517 | fill_gprs64 (regcache, gprs64); |
61c5da0b KB |
1518 | ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL); |
1519 | } | |
c11d79f2 | 1520 | else |
61c5da0b | 1521 | { |
cbe92db4 KB |
1522 | /* Pre-fetch: some regs may not be in the cache. */ |
1523 | ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL); | |
647478e0 | 1524 | fill_gprs32 (regcache, gprs32); |
61c5da0b KB |
1525 | ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL); |
1526 | } | |
c11d79f2 KB |
1527 | } |
1528 | ||
0fe7bf7b | 1529 | /* Floating-point registers. */ |
c11d79f2 | 1530 | |
383f0f5b JB |
1531 | if (ppc_floating_point_unit_p (current_gdbarch) |
1532 | && (regno == -1 | |
1533 | || (regno >= tdep->ppc_fp0_regnum | |
1534 | && regno < tdep->ppc_fp0_regnum + ppc_num_fprs))) | |
c11d79f2 | 1535 | { |
cbe92db4 KB |
1536 | /* Pre-fetch: some regs may not be in the cache. */ |
1537 | ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL); | |
647478e0 | 1538 | fill_fprs (regcache, fprs); |
61c5da0b | 1539 | ptrace32 (PTT_WRITE_FPRS, tid, (int *) fprs, 0, NULL); |
c11d79f2 KB |
1540 | } |
1541 | ||
0fe7bf7b | 1542 | /* Special-purpose registers. */ |
c11d79f2 | 1543 | |
f1a91342 | 1544 | if (regno == -1 || special_register_p (regno)) |
c11d79f2 KB |
1545 | { |
1546 | if (arch64) | |
1547 | { | |
cbe92db4 | 1548 | /* Pre-fetch: some registers won't be in the cache. */ |
0fe7bf7b MS |
1549 | ptrace64aix (PTT_READ_SPRS, tid, |
1550 | (unsigned long) &sprs64, 0, NULL); | |
647478e0 UW |
1551 | fill_sprs64 (regcache, &sprs64.pt_iar, &sprs64.pt_msr, |
1552 | &sprs64.pt_cr, &sprs64.pt_lr, &sprs64.pt_ctr, | |
1553 | &sprs64.pt_xer, &sprs64.pt_fpscr); | |
0fe7bf7b MS |
1554 | ptrace64aix (PTT_WRITE_SPRS, tid, |
1555 | (unsigned long) &sprs64, 0, NULL); | |
c11d79f2 KB |
1556 | } |
1557 | else | |
1558 | { | |
0d16ee5d UW |
1559 | /* The contents of "struct ptspr" were declared as "unsigned |
1560 | long" up to AIX 5.2, but are "unsigned int" since 5.3. | |
1561 | Use temporaries to work around this problem. Also, add an | |
1562 | assert here to make sure we fail if the system header files | |
1563 | use "unsigned long", and the size of that type is not what | |
1564 | the headers expect. */ | |
1565 | uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer, | |
1566 | tmp_fpscr; | |
1567 | ||
1568 | gdb_assert (sizeof (sprs32.pt_iar) == 4); | |
1569 | ||
cbe92db4 | 1570 | /* Pre-fetch: some registers won't be in the cache. */ |
c11d79f2 KB |
1571 | ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL); |
1572 | ||
647478e0 UW |
1573 | fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, |
1574 | &tmp_ctr, &tmp_xer, &tmp_fpscr); | |
0d16ee5d UW |
1575 | |
1576 | sprs32.pt_iar = tmp_iar; | |
1577 | sprs32.pt_msr = tmp_msr; | |
1578 | sprs32.pt_cr = tmp_cr; | |
1579 | sprs32.pt_lr = tmp_lr; | |
1580 | sprs32.pt_ctr = tmp_ctr; | |
1581 | sprs32.pt_xer = tmp_xer; | |
1582 | sprs32.pt_fpscr = tmp_fpscr; | |
c11d79f2 | 1583 | |
f1a91342 | 1584 | if (tdep->ppc_mq_regnum >= 0) |
647478e0 UW |
1585 | if (regcache_valid_p (regcache, tdep->ppc_mq_regnum)) |
1586 | regcache_raw_collect (regcache, tdep->ppc_mq_regnum, | |
822c9732 | 1587 | &sprs32.pt_mq); |
c11d79f2 KB |
1588 | |
1589 | ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL); | |
1590 | } | |
1591 | } | |
1592 | } | |
1593 | ||
0fe7bf7b MS |
1594 | /* Store gdb's current view of the register set into the |
1595 | thread/process specified by inferior_ptid. */ | |
c11d79f2 KB |
1596 | |
1597 | static void | |
56be3814 | 1598 | aix_thread_store_registers (struct regcache *regcache, int regno) |
c11d79f2 KB |
1599 | { |
1600 | struct thread_info *thread; | |
1601 | pthdb_tid_t tid; | |
1602 | ||
1603 | if (!PD_TID (inferior_ptid)) | |
56be3814 | 1604 | base_target.to_store_registers (regcache, regno); |
c11d79f2 KB |
1605 | else |
1606 | { | |
1607 | thread = find_thread_pid (inferior_ptid); | |
1608 | tid = thread->private->tid; | |
1609 | ||
1610 | if (tid == PTHDB_INVALID_TID) | |
56be3814 | 1611 | store_regs_user_thread (regcache, thread->private->pdtid); |
c11d79f2 | 1612 | else |
56be3814 | 1613 | store_regs_kernel_thread (regcache, regno, tid); |
c11d79f2 KB |
1614 | } |
1615 | } | |
1616 | ||
037a727e UW |
1617 | /* Attempt a transfer all LEN bytes starting at OFFSET between the |
1618 | inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer. | |
1619 | Return the number of bytes actually transferred. */ | |
1620 | ||
1621 | static LONGEST | |
1622 | aix_thread_xfer_partial (struct target_ops *ops, enum target_object object, | |
1623 | const char *annex, gdb_byte *readbuf, | |
1624 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c11d79f2 | 1625 | { |
037a727e UW |
1626 | struct cleanup *old_chain = save_inferior_ptid (); |
1627 | LONGEST xfer; | |
14fa3751 KB |
1628 | |
1629 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
037a727e UW |
1630 | xfer = base_target.to_xfer_partial (ops, object, annex, |
1631 | readbuf, writebuf, offset, len); | |
c11d79f2 | 1632 | |
037a727e UW |
1633 | do_cleanups (old_chain); |
1634 | return xfer; | |
c11d79f2 KB |
1635 | } |
1636 | ||
0fe7bf7b | 1637 | /* Kill and forget about the inferior process. */ |
c11d79f2 KB |
1638 | |
1639 | static void | |
206d3d3c | 1640 | aix_thread_kill (void) |
c11d79f2 | 1641 | { |
14fa3751 KB |
1642 | struct cleanup *cleanup = save_inferior_ptid (); |
1643 | ||
1644 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c | 1645 | base_target.to_kill (); |
14fa3751 | 1646 | do_cleanups (cleanup); |
c11d79f2 KB |
1647 | } |
1648 | ||
0fe7bf7b | 1649 | /* Clean up after the inferior exits. */ |
c11d79f2 KB |
1650 | |
1651 | static void | |
206d3d3c | 1652 | aix_thread_mourn_inferior (void) |
c11d79f2 KB |
1653 | { |
1654 | pd_deactivate (); | |
206d3d3c | 1655 | base_target.to_mourn_inferior (); |
c11d79f2 KB |
1656 | } |
1657 | ||
0fe7bf7b | 1658 | /* Return whether thread PID is still valid. */ |
c11d79f2 KB |
1659 | |
1660 | static int | |
206d3d3c | 1661 | aix_thread_thread_alive (ptid_t ptid) |
c11d79f2 KB |
1662 | { |
1663 | if (!PD_TID (ptid)) | |
206d3d3c | 1664 | return base_target.to_thread_alive (ptid); |
c11d79f2 | 1665 | |
0fe7bf7b MS |
1666 | /* We update the thread list every time the child stops, so all |
1667 | valid threads should be in the thread list. */ | |
c11d79f2 KB |
1668 | return in_thread_list (ptid); |
1669 | } | |
1670 | ||
0fe7bf7b MS |
1671 | /* Return a printable representation of composite PID for use in |
1672 | "info threads" output. */ | |
c11d79f2 KB |
1673 | |
1674 | static char * | |
206d3d3c | 1675 | aix_thread_pid_to_str (ptid_t ptid) |
c11d79f2 KB |
1676 | { |
1677 | static char *ret = NULL; | |
1678 | ||
1679 | if (!PD_TID (ptid)) | |
206d3d3c | 1680 | return base_target.to_pid_to_str (ptid); |
c11d79f2 KB |
1681 | |
1682 | /* Free previous return value; a new one will be allocated by | |
b435e160 | 1683 | xstrprintf(). */ |
c11d79f2 KB |
1684 | xfree (ret); |
1685 | ||
edefbb7c | 1686 | ret = xstrprintf (_("Thread %ld"), ptid_get_tid (ptid)); |
c11d79f2 KB |
1687 | return ret; |
1688 | } | |
1689 | ||
0fe7bf7b MS |
1690 | /* Return a printable representation of extra information about |
1691 | THREAD, for use in "info threads" output. */ | |
c11d79f2 KB |
1692 | |
1693 | static char * | |
206d3d3c | 1694 | aix_thread_extra_thread_info (struct thread_info *thread) |
c11d79f2 KB |
1695 | { |
1696 | struct ui_file *buf; | |
1697 | int status; | |
1698 | pthdb_pthread_t pdtid; | |
1699 | pthdb_tid_t tid; | |
1700 | pthdb_state_t state; | |
1701 | pthdb_suspendstate_t suspendstate; | |
1702 | pthdb_detachstate_t detachstate; | |
1703 | int cancelpend; | |
1704 | long length; | |
1705 | static char *ret = NULL; | |
1706 | ||
1707 | if (!PD_TID (thread->ptid)) | |
1708 | return NULL; | |
1709 | ||
1710 | buf = mem_fileopen (); | |
1711 | ||
1712 | pdtid = thread->private->pdtid; | |
1713 | tid = thread->private->tid; | |
1714 | ||
1715 | if (tid != PTHDB_INVALID_TID) | |
edefbb7c | 1716 | /* i18n: Like "thread-identifier %d, [state] running, suspended" */ |
0d16ee5d | 1717 | fprintf_unfiltered (buf, _("tid %d"), (int)tid); |
c11d79f2 KB |
1718 | |
1719 | status = pthdb_pthread_state (pd_session, pdtid, &state); | |
1720 | if (status != PTHDB_SUCCESS) | |
1721 | state = PST_NOTSUP; | |
1722 | fprintf_unfiltered (buf, ", %s", state2str (state)); | |
1723 | ||
0fe7bf7b MS |
1724 | status = pthdb_pthread_suspendstate (pd_session, pdtid, |
1725 | &suspendstate); | |
c11d79f2 | 1726 | if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED) |
edefbb7c AC |
1727 | /* i18n: Like "Thread-Id %d, [state] running, suspended" */ |
1728 | fprintf_unfiltered (buf, _(", suspended")); | |
c11d79f2 | 1729 | |
0fe7bf7b MS |
1730 | status = pthdb_pthread_detachstate (pd_session, pdtid, |
1731 | &detachstate); | |
c11d79f2 | 1732 | if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED) |
edefbb7c AC |
1733 | /* i18n: Like "Thread-Id %d, [state] running, detached" */ |
1734 | fprintf_unfiltered (buf, _(", detached")); | |
c11d79f2 KB |
1735 | |
1736 | pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend); | |
1737 | if (status == PTHDB_SUCCESS && cancelpend) | |
edefbb7c AC |
1738 | /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */ |
1739 | fprintf_unfiltered (buf, _(", cancel pending")); | |
c11d79f2 KB |
1740 | |
1741 | ui_file_write (buf, "", 1); | |
1742 | ||
1743 | xfree (ret); /* Free old buffer. */ | |
1744 | ||
1745 | ret = ui_file_xstrdup (buf, &length); | |
1746 | ui_file_delete (buf); | |
1747 | ||
1748 | return ret; | |
1749 | } | |
1750 | ||
206d3d3c | 1751 | /* Initialize target aix_thread_ops. */ |
c11d79f2 KB |
1752 | |
1753 | static void | |
206d3d3c | 1754 | init_aix_thread_ops (void) |
c11d79f2 | 1755 | { |
206d3d3c | 1756 | aix_thread_ops.to_shortname = "aix-threads"; |
edefbb7c AC |
1757 | aix_thread_ops.to_longname = _("AIX pthread support"); |
1758 | aix_thread_ops.to_doc = _("AIX pthread support"); | |
206d3d3c KB |
1759 | |
1760 | aix_thread_ops.to_attach = aix_thread_attach; | |
1761 | aix_thread_ops.to_detach = aix_thread_detach; | |
1762 | aix_thread_ops.to_resume = aix_thread_resume; | |
1763 | aix_thread_ops.to_wait = aix_thread_wait; | |
1764 | aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers; | |
1765 | aix_thread_ops.to_store_registers = aix_thread_store_registers; | |
037a727e | 1766 | aix_thread_ops.to_xfer_partial = aix_thread_xfer_partial; |
206d3d3c | 1767 | /* No need for aix_thread_ops.to_create_inferior, because we activate thread |
0fe7bf7b | 1768 | debugging when the inferior reaches pd_brk_addr. */ |
206d3d3c KB |
1769 | aix_thread_ops.to_kill = aix_thread_kill; |
1770 | aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior; | |
1771 | aix_thread_ops.to_thread_alive = aix_thread_thread_alive; | |
1772 | aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str; | |
1773 | aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info; | |
1774 | aix_thread_ops.to_stratum = thread_stratum; | |
1775 | aix_thread_ops.to_magic = OPS_MAGIC; | |
c11d79f2 KB |
1776 | } |
1777 | ||
1778 | /* Module startup initialization function, automagically called by | |
0fe7bf7b | 1779 | init.c. */ |
c11d79f2 KB |
1780 | |
1781 | void | |
1782 | _initialize_aix_thread (void) | |
1783 | { | |
206d3d3c KB |
1784 | init_aix_thread_ops (); |
1785 | add_target (&aix_thread_ops); | |
c11d79f2 | 1786 | |
0fe7bf7b | 1787 | /* Notice when object files get loaded and unloaded. */ |
06d3b283 | 1788 | observer_attach_new_objfile (new_objfile); |
8e2c28d4 | 1789 | |
577b7047 | 1790 | add_setshow_boolean_cmd ("aix-thread", class_maintenance, &debug_aix_thread, |
edefbb7c AC |
1791 | _("Set debugging of AIX thread module."), |
1792 | _("Show debugging of AIX thread module."), | |
1793 | _("Enables debugging output (used to debug GDB)."), | |
2c5b56ce AC |
1794 | NULL, NULL, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */ |
1795 | &setdebuglist, &showdebuglist); | |
c11d79f2 | 1796 | } |