Commit | Line | Data |
---|---|---|
c11d79f2 KB |
1 | /* Low level interface for debugging AIX 4.3+ pthreads. |
2 | ||
3 | Copyright 1999, 2000, 2002 Free Software Foundation, Inc. | |
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 | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
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 KB |
51 | #include "language.h" /* for local_hex_string() */ |
52 | #include "ppc-tdep.h" | |
0d4d5484 | 53 | #include "gdb_string.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 | |
0fe7bf7b MS |
109 | /* Copy of the target over which ops is pushed. |
110 | This is more convenient than a pointer to child_ops or core_ops, | |
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 | ||
9a4105ab AC |
133 | /* Saved pointer to previous owner of |
134 | deprecated_target_new_objfile_hook. */ | |
c11d79f2 KB |
135 | |
136 | static void (*target_new_objfile_chain)(struct objfile *); | |
137 | ||
0fe7bf7b | 138 | /* Forward declarations for pthdb callbacks. */ |
c11d79f2 KB |
139 | |
140 | static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int); | |
141 | static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t); | |
142 | static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t); | |
143 | static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid, | |
0fe7bf7b MS |
144 | unsigned long long flags, |
145 | pthdb_context_t *context); | |
c11d79f2 | 146 | static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid, |
0fe7bf7b MS |
147 | unsigned long long flags, |
148 | pthdb_context_t *context); | |
c11d79f2 KB |
149 | static int pdc_alloc (pthdb_user_t, size_t, void **); |
150 | static int pdc_realloc (pthdb_user_t, void *, size_t, void **); | |
151 | static int pdc_dealloc (pthdb_user_t, void *); | |
152 | ||
0fe7bf7b | 153 | /* pthdb callbacks. */ |
c11d79f2 KB |
154 | |
155 | static pthdb_callbacks_t pd_callbacks = { | |
156 | pdc_symbol_addrs, | |
157 | pdc_read_data, | |
158 | pdc_write_data, | |
159 | pdc_read_regs, | |
160 | pdc_write_regs, | |
161 | pdc_alloc, | |
162 | pdc_realloc, | |
163 | pdc_dealloc, | |
164 | NULL | |
165 | }; | |
166 | ||
0fe7bf7b | 167 | /* Current pthdb session. */ |
c11d79f2 KB |
168 | |
169 | static pthdb_session_t pd_session; | |
170 | ||
0fe7bf7b MS |
171 | /* Return a printable representation of pthdebug function return |
172 | STATUS. */ | |
c11d79f2 KB |
173 | |
174 | static char * | |
175 | pd_status2str (int status) | |
176 | { | |
177 | switch (status) | |
178 | { | |
179 | case PTHDB_SUCCESS: return "SUCCESS"; | |
180 | case PTHDB_NOSYS: return "NOSYS"; | |
181 | case PTHDB_NOTSUP: return "NOTSUP"; | |
182 | case PTHDB_BAD_VERSION: return "BAD_VERSION"; | |
183 | case PTHDB_BAD_USER: return "BAD_USER"; | |
184 | case PTHDB_BAD_SESSION: return "BAD_SESSION"; | |
185 | case PTHDB_BAD_MODE: return "BAD_MODE"; | |
186 | case PTHDB_BAD_FLAGS: return "BAD_FLAGS"; | |
187 | case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK"; | |
188 | case PTHDB_BAD_POINTER: return "BAD_POINTER"; | |
189 | case PTHDB_BAD_CMD: return "BAD_CMD"; | |
190 | case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD"; | |
191 | case PTHDB_BAD_ATTR: return "BAD_ATTR"; | |
192 | case PTHDB_BAD_MUTEX: return "BAD_MUTEX"; | |
193 | case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR"; | |
194 | case PTHDB_BAD_COND: return "BAD_COND"; | |
195 | case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR"; | |
196 | case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK"; | |
197 | case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR"; | |
198 | case PTHDB_BAD_KEY: return "BAD_KEY"; | |
199 | case PTHDB_BAD_PTID: return "BAD_PTID"; | |
200 | case PTHDB_BAD_TID: return "BAD_TID"; | |
201 | case PTHDB_CALLBACK: return "CALLBACK"; | |
202 | case PTHDB_CONTEXT: return "CONTEXT"; | |
203 | case PTHDB_HELD: return "HELD"; | |
204 | case PTHDB_NOT_HELD: return "NOT_HELD"; | |
205 | case PTHDB_MEMORY: return "MEMORY"; | |
206 | case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED"; | |
207 | case PTHDB_SYMBOL: return "SYMBOL"; | |
208 | case PTHDB_NOT_AVAIL: return "NOT_AVAIL"; | |
209 | case PTHDB_INTERNAL: return "INTERNAL"; | |
210 | default: return "UNKNOWN"; | |
211 | } | |
212 | } | |
213 | ||
0fe7bf7b MS |
214 | /* A call to ptrace(REQ, ID, ...) just returned RET. Check for |
215 | exceptional conditions and either return nonlocally or else return | |
216 | 1 for success and 0 for failure. */ | |
c11d79f2 KB |
217 | |
218 | static int | |
219 | ptrace_check (int req, int id, int ret) | |
220 | { | |
221 | if (ret == 0 && !errno) | |
222 | return 1; | |
223 | ||
0fe7bf7b MS |
224 | /* According to ptrace(2), ptrace may fail with EPERM if "the |
225 | Identifier parameter corresponds to a kernel thread which is | |
226 | stopped in kernel mode and whose computational state cannot be | |
227 | read or written." This happens quite often with register reads. */ | |
c11d79f2 KB |
228 | |
229 | switch (req) | |
230 | { | |
231 | case PTT_READ_GPRS: | |
232 | case PTT_READ_FPRS: | |
233 | case PTT_READ_SPRS: | |
234 | if (ret == -1 && errno == EPERM) | |
42cc437f KB |
235 | { |
236 | if (debug_aix_thread) | |
0fe7bf7b | 237 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 238 | "ptrace (%d, %d) = %d (errno = %d)\n", |
42cc437f KB |
239 | req, id, ret, errno); |
240 | return ret == -1 ? 0 : 1; | |
241 | } | |
c11d79f2 KB |
242 | break; |
243 | } | |
244 | error ("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)", | |
be006b8b | 245 | req, id, ret, errno, safe_strerror (errno)); |
0fe7bf7b | 246 | return 0; /* Not reached. */ |
c11d79f2 KB |
247 | } |
248 | ||
0fe7bf7b | 249 | /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */ |
c11d79f2 KB |
250 | |
251 | static int | |
252 | ptrace64aix (int req, int id, long long addr, int data, int *buf) | |
253 | { | |
254 | errno = 0; | |
255 | return ptrace_check (req, id, ptracex (req, id, addr, data, buf)); | |
256 | } | |
257 | ||
0fe7bf7b | 258 | /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */ |
c11d79f2 KB |
259 | |
260 | static int | |
261 | ptrace32 (int req, int id, int *addr, int data, int *buf) | |
262 | { | |
263 | errno = 0; | |
0fe7bf7b | 264 | return ptrace_check (req, id, |
206d3d3c | 265 | ptrace (req, id, (int *) addr, data, buf)); |
c11d79f2 KB |
266 | } |
267 | ||
0fe7bf7b MS |
268 | /* If *PIDP is a composite process/thread id, convert it to a |
269 | process id. */ | |
c11d79f2 KB |
270 | |
271 | static void | |
272 | pid_to_prc (ptid_t *ptidp) | |
273 | { | |
274 | ptid_t ptid; | |
275 | ||
276 | ptid = *ptidp; | |
277 | if (PD_TID (ptid)) | |
278 | *ptidp = pid_to_ptid (PIDGET (ptid)); | |
279 | } | |
280 | ||
0fe7bf7b MS |
281 | /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to |
282 | the address of SYMBOLS[<i>].name. */ | |
c11d79f2 KB |
283 | |
284 | static int | |
285 | pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count) | |
286 | { | |
287 | struct minimal_symbol *ms; | |
288 | int i; | |
289 | char *name; | |
290 | ||
8e2c28d4 KB |
291 | if (debug_aix_thread) |
292 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 293 | "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n", |
8e2c28d4 | 294 | user, (long) symbols, count); |
c11d79f2 KB |
295 | |
296 | for (i = 0; i < count; i++) | |
297 | { | |
298 | name = symbols[i].name; | |
8e2c28d4 | 299 | if (debug_aix_thread) |
0fe7bf7b | 300 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 301 | " symbols[%d].name = \"%s\"\n", i, name); |
c11d79f2 KB |
302 | |
303 | if (!*name) | |
304 | symbols[i].addr = 0; | |
305 | else | |
306 | { | |
307 | if (!(ms = lookup_minimal_symbol (name, NULL, NULL))) | |
308 | { | |
8e2c28d4 | 309 | if (debug_aix_thread) |
27bae383 | 310 | fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE\n"); |
c11d79f2 KB |
311 | return PDC_FAILURE; |
312 | } | |
313 | symbols[i].addr = SYMBOL_VALUE_ADDRESS (ms); | |
314 | } | |
8e2c28d4 | 315 | if (debug_aix_thread) |
27bae383 KB |
316 | fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = %s\n", |
317 | i, local_hex_string (symbols[i].addr)); | |
c11d79f2 | 318 | } |
8e2c28d4 | 319 | if (debug_aix_thread) |
27bae383 | 320 | fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS\n"); |
c11d79f2 KB |
321 | return PDC_SUCCESS; |
322 | } | |
323 | ||
0fe7bf7b MS |
324 | /* Read registers call back function should be able to read the |
325 | context information of a debuggee kernel thread from an active | |
326 | process or from a core file. The information should be formatted | |
327 | in context64 form for both 32-bit and 64-bit process. | |
328 | If successful return 0, else non-zero is returned. */ | |
329 | ||
c11d79f2 KB |
330 | static int |
331 | pdc_read_regs (pthdb_user_t user, | |
332 | pthdb_tid_t tid, | |
333 | unsigned long long flags, | |
334 | pthdb_context_t *context) | |
335 | { | |
0fe7bf7b MS |
336 | /* This function doesn't appear to be used, so we could probably |
337 | just return 0 here. HOWEVER, if it is not defined, the OS will | |
338 | complain and several thread debug functions will fail. In case | |
339 | this is needed, I have implemented what I think it should do, | |
340 | however this code is untested. */ | |
341 | ||
063715bf JB |
342 | uint64_t gprs64[ppc_num_gprs]; |
343 | uint32_t gprs32[ppc_num_gprs]; | |
344 | double fprs[ppc_num_fprs]; | |
c11d79f2 KB |
345 | struct ptxsprs sprs64; |
346 | struct ptsprs sprs32; | |
347 | ||
8e2c28d4 | 348 | if (debug_aix_thread) |
27bae383 KB |
349 | fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%s\n", |
350 | (int) tid, local_hex_string (flags)); | |
c11d79f2 | 351 | |
0fe7bf7b | 352 | /* General-purpose registers. */ |
c11d79f2 KB |
353 | if (flags & PTHDB_FLAG_GPRS) |
354 | { | |
355 | if (arch64) | |
356 | { | |
0fe7bf7b MS |
357 | if (!ptrace64aix (PTT_READ_GPRS, tid, |
358 | (unsigned long) gprs64, 0, NULL)) | |
c11d79f2 KB |
359 | memset (gprs64, 0, sizeof (gprs64)); |
360 | memcpy (context->gpr, gprs64, sizeof(gprs64)); | |
361 | } | |
362 | else | |
363 | { | |
364 | if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL)) | |
365 | memset (gprs32, 0, sizeof (gprs32)); | |
366 | memcpy (context->gpr, gprs32, sizeof(gprs32)); | |
367 | } | |
368 | } | |
369 | ||
0fe7bf7b | 370 | /* Floating-point registers. */ |
c11d79f2 KB |
371 | if (flags & PTHDB_FLAG_FPRS) |
372 | { | |
373 | if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL)) | |
374 | memset (fprs, 0, sizeof (fprs)); | |
375 | memcpy (context->fpr, fprs, sizeof(fprs)); | |
376 | } | |
377 | ||
0fe7bf7b | 378 | /* Special-purpose registers. */ |
c11d79f2 KB |
379 | if (flags & PTHDB_FLAG_SPRS) |
380 | { | |
381 | if (arch64) | |
382 | { | |
0fe7bf7b MS |
383 | if (!ptrace64aix (PTT_READ_SPRS, tid, |
384 | (unsigned long) &sprs64, 0, NULL)) | |
c11d79f2 KB |
385 | memset (&sprs64, 0, sizeof (sprs64)); |
386 | memcpy (&context->msr, &sprs64, sizeof(sprs64)); | |
387 | } | |
388 | else | |
389 | { | |
390 | if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL)) | |
391 | memset (&sprs32, 0, sizeof (sprs32)); | |
392 | memcpy (&context->msr, &sprs32, sizeof(sprs32)); | |
393 | } | |
394 | } | |
395 | return 0; | |
396 | } | |
397 | ||
0fe7bf7b MS |
398 | /* Write register function should be able to write requested context |
399 | information to specified debuggee's kernel thread id. | |
400 | If successful return 0, else non-zero is returned. */ | |
401 | ||
c11d79f2 KB |
402 | static int |
403 | pdc_write_regs (pthdb_user_t user, | |
404 | pthdb_tid_t tid, | |
405 | unsigned long long flags, | |
406 | pthdb_context_t *context) | |
407 | { | |
0fe7bf7b MS |
408 | /* This function doesn't appear to be used, so we could probably |
409 | just return 0 here. HOWEVER, if it is not defined, the OS will | |
410 | complain and several thread debug functions will fail. In case | |
411 | this is needed, I have implemented what I think it should do, | |
412 | however this code is untested. */ | |
c11d79f2 | 413 | |
8e2c28d4 | 414 | if (debug_aix_thread) |
27bae383 KB |
415 | fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%s\n", |
416 | (int) tid, local_hex_string (flags)); | |
c11d79f2 | 417 | |
0fe7bf7b | 418 | /* General-purpose registers. */ |
c11d79f2 KB |
419 | if (flags & PTHDB_FLAG_GPRS) |
420 | { | |
421 | if (arch64) | |
0fe7bf7b | 422 | ptrace64aix (PTT_WRITE_GPRS, tid, |
206d3d3c | 423 | (unsigned long) context->gpr, 0, NULL); |
c11d79f2 | 424 | else |
206d3d3c | 425 | ptrace32 (PTT_WRITE_GPRS, tid, (int *) context->gpr, 0, NULL); |
c11d79f2 KB |
426 | } |
427 | ||
0fe7bf7b | 428 | /* Floating-point registers. */ |
c11d79f2 KB |
429 | if (flags & PTHDB_FLAG_FPRS) |
430 | { | |
206d3d3c | 431 | ptrace32 (PTT_WRITE_FPRS, tid, (int *) context->fpr, 0, NULL); |
c11d79f2 KB |
432 | } |
433 | ||
0fe7bf7b | 434 | /* Special-purpose registers. */ |
c11d79f2 KB |
435 | if (flags & PTHDB_FLAG_SPRS) |
436 | { | |
437 | if (arch64) | |
438 | { | |
0fe7bf7b MS |
439 | ptrace64aix (PTT_WRITE_SPRS, tid, |
440 | (unsigned long) &context->msr, 0, NULL); | |
c11d79f2 KB |
441 | } |
442 | else | |
443 | { | |
206d3d3c | 444 | ptrace32 (PTT_WRITE_SPRS, tid, (int *) &context->msr, 0, NULL); |
c11d79f2 KB |
445 | } |
446 | } | |
447 | return 0; | |
448 | } | |
449 | ||
0fe7bf7b | 450 | /* pthdb callback: read LEN bytes from process ADDR into BUF. */ |
c11d79f2 KB |
451 | |
452 | static int | |
0fe7bf7b MS |
453 | pdc_read_data (pthdb_user_t user, void *buf, |
454 | pthdb_addr_t addr, size_t len) | |
c11d79f2 KB |
455 | { |
456 | int status, ret; | |
457 | ||
8e2c28d4 KB |
458 | if (debug_aix_thread) |
459 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 KB |
460 | "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n", |
461 | user, (long) buf, local_hex_string (addr), len); | |
c11d79f2 KB |
462 | |
463 | status = target_read_memory (addr, buf, len); | |
464 | ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE; | |
465 | ||
8e2c28d4 | 466 | if (debug_aix_thread) |
27bae383 | 467 | fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", |
0fe7bf7b | 468 | status, pd_status2str (ret)); |
c11d79f2 KB |
469 | return ret; |
470 | } | |
471 | ||
0fe7bf7b | 472 | /* pthdb callback: write LEN bytes from BUF to process ADDR. */ |
c11d79f2 KB |
473 | |
474 | static int | |
0fe7bf7b MS |
475 | pdc_write_data (pthdb_user_t user, void *buf, |
476 | pthdb_addr_t addr, size_t len) | |
c11d79f2 KB |
477 | { |
478 | int status, ret; | |
479 | ||
8e2c28d4 KB |
480 | if (debug_aix_thread) |
481 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 KB |
482 | "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n", |
483 | user, (long) buf, local_hex_string (addr), len); | |
c11d79f2 KB |
484 | |
485 | status = target_write_memory (addr, buf, len); | |
486 | ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE; | |
487 | ||
8e2c28d4 | 488 | if (debug_aix_thread) |
27bae383 | 489 | fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", status, |
8e2c28d4 | 490 | pd_status2str (ret)); |
c11d79f2 KB |
491 | return ret; |
492 | } | |
493 | ||
0fe7bf7b MS |
494 | /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it |
495 | in BUFP. */ | |
c11d79f2 KB |
496 | |
497 | static int | |
498 | pdc_alloc (pthdb_user_t user, size_t len, void **bufp) | |
499 | { | |
8e2c28d4 KB |
500 | if (debug_aix_thread) |
501 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 502 | "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n", |
8e2c28d4 | 503 | user, len, (long) bufp); |
c11d79f2 | 504 | *bufp = xmalloc (len); |
8e2c28d4 | 505 | if (debug_aix_thread) |
0fe7bf7b | 506 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 507 | " malloc returned 0x%lx\n", (long) *bufp); |
0fe7bf7b MS |
508 | |
509 | /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never | |
510 | be returned. */ | |
511 | ||
c11d79f2 KB |
512 | return *bufp ? PDC_SUCCESS : PDC_FAILURE; |
513 | } | |
514 | ||
0fe7bf7b MS |
515 | /* pthdb callback: reallocate BUF, which was allocated by the alloc or |
516 | realloc callback, so that it contains LEN bytes, and store a | |
517 | pointer to the result in BUFP. */ | |
c11d79f2 KB |
518 | |
519 | static int | |
520 | pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp) | |
521 | { | |
8e2c28d4 KB |
522 | if (debug_aix_thread) |
523 | fprintf_unfiltered (gdb_stdlog, | |
27bae383 | 524 | "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n", |
8e2c28d4 | 525 | user, (long) buf, len, (long) bufp); |
be006b8b | 526 | *bufp = xrealloc (buf, len); |
8e2c28d4 | 527 | if (debug_aix_thread) |
0fe7bf7b | 528 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 529 | " realloc returned 0x%lx\n", (long) *bufp); |
c11d79f2 KB |
530 | return *bufp ? PDC_SUCCESS : PDC_FAILURE; |
531 | } | |
532 | ||
0fe7bf7b MS |
533 | /* pthdb callback: free BUF, which was allocated by the alloc or |
534 | realloc callback. */ | |
c11d79f2 KB |
535 | |
536 | static int | |
537 | pdc_dealloc (pthdb_user_t user, void *buf) | |
538 | { | |
8e2c28d4 | 539 | if (debug_aix_thread) |
0fe7bf7b | 540 | fprintf_unfiltered (gdb_stdlog, |
27bae383 | 541 | "pdc_free (user = %ld, buf = 0x%lx)\n", user, |
8e2c28d4 | 542 | (long) buf); |
c11d79f2 KB |
543 | xfree (buf); |
544 | return PDC_SUCCESS; | |
545 | } | |
546 | ||
0fe7bf7b | 547 | /* Return a printable representation of pthread STATE. */ |
c11d79f2 KB |
548 | |
549 | static char * | |
550 | state2str (pthdb_state_t state) | |
551 | { | |
552 | switch (state) | |
553 | { | |
554 | case PST_IDLE: return "idle"; /* being created */ | |
555 | case PST_RUN: return "running"; /* running */ | |
556 | case PST_SLEEP: return "sleeping"; /* awaiting an event */ | |
557 | case PST_READY: return "ready"; /* runnable */ | |
558 | case PST_TERM: return "finished"; /* awaiting a join/detach */ | |
559 | default: return "unknown"; | |
560 | } | |
561 | } | |
562 | ||
0fe7bf7b | 563 | /* qsort() comparison function for sorting pd_thread structs by pthid. */ |
c11d79f2 KB |
564 | |
565 | static int | |
566 | pcmp (const void *p1v, const void *p2v) | |
567 | { | |
568 | struct pd_thread *p1 = (struct pd_thread *) p1v; | |
569 | struct pd_thread *p2 = (struct pd_thread *) p2v; | |
570 | return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid; | |
571 | } | |
572 | ||
0fe7bf7b | 573 | /* iterate_over_threads() callback for counting GDB threads. */ |
c11d79f2 KB |
574 | |
575 | static int | |
576 | giter_count (struct thread_info *thread, void *countp) | |
577 | { | |
578 | (*(int *) countp)++; | |
579 | return 0; | |
580 | } | |
581 | ||
0fe7bf7b | 582 | /* iterate_over_threads() callback for accumulating GDB thread pids. */ |
c11d79f2 KB |
583 | |
584 | static int | |
585 | giter_accum (struct thread_info *thread, void *bufp) | |
586 | { | |
587 | **(struct thread_info ***) bufp = thread; | |
588 | (*(struct thread_info ***) bufp)++; | |
589 | return 0; | |
590 | } | |
591 | ||
592 | /* ptid comparison function */ | |
0fe7bf7b | 593 | |
c11d79f2 KB |
594 | static int |
595 | ptid_cmp (ptid_t ptid1, ptid_t ptid2) | |
596 | { | |
597 | int pid1, pid2; | |
598 | ||
599 | if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2)) | |
600 | return -1; | |
601 | else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2)) | |
602 | return 1; | |
603 | else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2)) | |
604 | return -1; | |
605 | else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2)) | |
606 | return 1; | |
607 | else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2)) | |
608 | return -1; | |
609 | else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2)) | |
610 | return 1; | |
611 | else | |
612 | return 0; | |
613 | } | |
614 | ||
0fe7bf7b | 615 | /* qsort() comparison function for sorting thread_info structs by pid. */ |
c11d79f2 KB |
616 | |
617 | static int | |
618 | gcmp (const void *t1v, const void *t2v) | |
619 | { | |
620 | struct thread_info *t1 = *(struct thread_info **) t1v; | |
621 | struct thread_info *t2 = *(struct thread_info **) t2v; | |
622 | return ptid_cmp (t1->ptid, t2->ptid); | |
623 | } | |
624 | ||
625 | /* Synchronize GDB's thread list with libpthdebug's. | |
626 | ||
627 | There are some benefits of doing this every time the inferior stops: | |
628 | ||
0fe7bf7b MS |
629 | - allows users to run thread-specific commands without needing to |
630 | run "info threads" first | |
c11d79f2 KB |
631 | |
632 | - helps pthdb_tid_pthread() work properly (see "libpthdebug | |
633 | peculiarities" at the top of this module) | |
634 | ||
0fe7bf7b MS |
635 | - simplifies the demands placed on libpthdebug, which seems to |
636 | have difficulty with certain call patterns */ | |
c11d79f2 KB |
637 | |
638 | static void | |
639 | sync_threadlists (void) | |
640 | { | |
641 | int cmd, status, infpid; | |
642 | int pcount, psize, pi, gcount, gi; | |
643 | struct pd_thread *pbuf; | |
644 | struct thread_info **gbuf, **g, *thread; | |
645 | pthdb_pthread_t pdtid; | |
646 | pthread_t pthid; | |
647 | pthdb_tid_t tid; | |
c11d79f2 | 648 | |
0fe7bf7b | 649 | /* Accumulate an array of libpthdebug threads sorted by pthread id. */ |
c11d79f2 KB |
650 | |
651 | pcount = 0; | |
652 | psize = 1; | |
653 | pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf); | |
654 | ||
655 | for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT) | |
656 | { | |
657 | status = pthdb_pthread (pd_session, &pdtid, cmd); | |
658 | if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD) | |
659 | break; | |
660 | ||
661 | status = pthdb_pthread_ptid (pd_session, pdtid, &pthid); | |
662 | if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID) | |
663 | continue; | |
664 | ||
665 | if (pcount == psize) | |
666 | { | |
667 | psize *= 2; | |
0fe7bf7b MS |
668 | pbuf = (struct pd_thread *) xrealloc (pbuf, |
669 | psize * sizeof *pbuf); | |
c11d79f2 KB |
670 | } |
671 | pbuf[pcount].pdtid = pdtid; | |
672 | pbuf[pcount].pthid = pthid; | |
673 | pcount++; | |
674 | } | |
675 | ||
676 | for (pi = 0; pi < pcount; pi++) | |
677 | { | |
678 | status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid); | |
679 | if (status != PTHDB_SUCCESS) | |
680 | tid = PTHDB_INVALID_TID; | |
681 | pbuf[pi].tid = tid; | |
682 | } | |
683 | ||
684 | qsort (pbuf, pcount, sizeof *pbuf, pcmp); | |
685 | ||
0fe7bf7b | 686 | /* Accumulate an array of GDB threads sorted by pid. */ |
c11d79f2 KB |
687 | |
688 | gcount = 0; | |
689 | iterate_over_threads (giter_count, &gcount); | |
690 | g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf); | |
691 | iterate_over_threads (giter_accum, &g); | |
692 | qsort (gbuf, gcount, sizeof *gbuf, gcmp); | |
693 | ||
0fe7bf7b | 694 | /* Apply differences between the two arrays to GDB's thread list. */ |
c11d79f2 KB |
695 | |
696 | infpid = PIDGET (inferior_ptid); | |
697 | for (pi = gi = 0; pi < pcount || gi < gcount;) | |
698 | { | |
c11d79f2 | 699 | if (pi == pcount) |
c11d79f2 | 700 | { |
42cc437f | 701 | delete_thread (gbuf[gi]->ptid); |
c11d79f2 KB |
702 | gi++; |
703 | } | |
42cc437f | 704 | else if (gi == gcount) |
c11d79f2 | 705 | { |
42cc437f | 706 | thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid)); |
c11d79f2 | 707 | thread->private = xmalloc (sizeof (struct private_thread_info)); |
42cc437f KB |
708 | thread->private->pdtid = pbuf[pi].pdtid; |
709 | thread->private->tid = pbuf[pi].tid; | |
c11d79f2 KB |
710 | pi++; |
711 | } | |
42cc437f KB |
712 | else |
713 | { | |
714 | ptid_t pptid, gptid; | |
715 | int cmp_result; | |
716 | ||
717 | pptid = BUILD_THREAD (pbuf[pi].pthid, infpid); | |
718 | gptid = gbuf[gi]->ptid; | |
719 | pdtid = pbuf[pi].pdtid; | |
720 | tid = pbuf[pi].tid; | |
c11d79f2 | 721 | |
42cc437f KB |
722 | cmp_result = ptid_cmp (pptid, gptid); |
723 | ||
724 | if (cmp_result == 0) | |
725 | { | |
726 | gbuf[gi]->private->pdtid = pdtid; | |
727 | gbuf[gi]->private->tid = tid; | |
728 | pi++; | |
729 | gi++; | |
730 | } | |
731 | else if (cmp_result > 0) | |
732 | { | |
733 | delete_thread (gptid); | |
734 | gi++; | |
735 | } | |
736 | else | |
737 | { | |
738 | thread = add_thread (pptid); | |
739 | thread->private = xmalloc (sizeof (struct private_thread_info)); | |
740 | thread->private->pdtid = pdtid; | |
741 | thread->private->tid = tid; | |
742 | pi++; | |
743 | } | |
744 | } | |
c11d79f2 KB |
745 | } |
746 | ||
747 | xfree (pbuf); | |
748 | xfree (gbuf); | |
749 | } | |
750 | ||
0fe7bf7b MS |
751 | /* Iterate_over_threads() callback for locating a thread whose kernel |
752 | thread just received a trap signal. */ | |
c11d79f2 KB |
753 | |
754 | static int | |
755 | iter_trap (struct thread_info *thread, void *unused) | |
756 | { | |
757 | struct thrdsinfo64 thrinf; | |
758 | pthdb_tid_t tid; | |
759 | ||
0fe7bf7b MS |
760 | /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */ |
761 | extern int getthrds (pid_t, struct thrdsinfo64 *, | |
762 | int, pthdb_tid_t *, int); | |
c11d79f2 KB |
763 | |
764 | tid = thread->private->tid; | |
765 | if (tid == PTHDB_INVALID_TID) | |
766 | return 0; | |
767 | ||
0fe7bf7b MS |
768 | if (getthrds (PIDGET (inferior_ptid), &thrinf, |
769 | sizeof (thrinf), &tid, 1) != 1) | |
c11d79f2 KB |
770 | return 0; |
771 | ||
772 | return thrinf.ti_cursig == SIGTRAP; | |
773 | } | |
774 | ||
0fe7bf7b MS |
775 | /* Synchronize libpthdebug's state with the inferior and with GDB, |
776 | generate a composite process/thread <pid> for the current thread, | |
777 | set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */ | |
c11d79f2 KB |
778 | |
779 | static ptid_t | |
780 | pd_update (int set_infpid) | |
781 | { | |
782 | int status; | |
783 | ptid_t ptid; | |
784 | struct thread_info *thread; | |
785 | ||
786 | if (!pd_active) | |
787 | return inferior_ptid; | |
788 | ||
789 | status = pthdb_session_update (pd_session); | |
790 | if (status != PTHDB_SUCCESS) | |
791 | return inferior_ptid; | |
792 | ||
793 | sync_threadlists (); | |
794 | ||
0fe7bf7b | 795 | /* Define "current thread" as one that just received a trap signal. */ |
c11d79f2 KB |
796 | |
797 | thread = iterate_over_threads (iter_trap, NULL); | |
798 | if (!thread) | |
799 | ptid = inferior_ptid; | |
800 | else | |
801 | { | |
802 | ptid = thread->ptid; | |
803 | if (set_infpid) | |
804 | inferior_ptid = ptid; | |
805 | } | |
806 | return ptid; | |
807 | } | |
808 | ||
0fe7bf7b MS |
809 | /* Try to start debugging threads in the current process. |
810 | If successful and SET_INFPID, set inferior_ptid to reflect the | |
811 | current thread. */ | |
c11d79f2 KB |
812 | |
813 | static ptid_t | |
814 | pd_activate (int set_infpid) | |
815 | { | |
816 | int status; | |
817 | ||
818 | status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT, | |
0fe7bf7b MS |
819 | PTHDB_FLAG_REGS, &pd_callbacks, |
820 | &pd_session); | |
c11d79f2 KB |
821 | if (status != PTHDB_SUCCESS) |
822 | { | |
823 | return inferior_ptid; | |
824 | } | |
825 | pd_active = 1; | |
826 | return pd_update (set_infpid); | |
827 | } | |
828 | ||
0fe7bf7b | 829 | /* Undo the effects of pd_activate(). */ |
c11d79f2 KB |
830 | |
831 | static void | |
832 | pd_deactivate (void) | |
833 | { | |
834 | if (!pd_active) | |
835 | return; | |
836 | pthdb_session_destroy (pd_session); | |
837 | ||
838 | pid_to_prc (&inferior_ptid); | |
839 | pd_active = 0; | |
840 | } | |
841 | ||
0fe7bf7b MS |
842 | /* An object file has just been loaded. Check whether the current |
843 | application is pthreaded, and if so, prepare for thread debugging. */ | |
c11d79f2 KB |
844 | |
845 | static void | |
846 | pd_enable (void) | |
847 | { | |
848 | int status; | |
849 | char *stub_name; | |
850 | struct minimal_symbol *ms; | |
851 | ||
0fe7bf7b | 852 | /* Don't initialize twice. */ |
c11d79f2 KB |
853 | if (pd_able) |
854 | return; | |
855 | ||
0fe7bf7b | 856 | /* Check application word size. */ |
12c266ea | 857 | arch64 = DEPRECATED_REGISTER_RAW_SIZE (0) == 8; |
c11d79f2 | 858 | |
0fe7bf7b | 859 | /* Check whether the application is pthreaded. */ |
c11d79f2 | 860 | stub_name = NULL; |
0fe7bf7b MS |
861 | status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS, |
862 | &pd_callbacks, &stub_name); | |
863 | if ((status != PTHDB_SUCCESS && | |
864 | status != PTHDB_NOT_PTHREADED) || !stub_name) | |
c11d79f2 KB |
865 | return; |
866 | ||
0fe7bf7b | 867 | /* Set a breakpoint on the returned stub function. */ |
c11d79f2 KB |
868 | if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL))) |
869 | return; | |
870 | pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms); | |
871 | if (!create_thread_event_breakpoint (pd_brk_addr)) | |
872 | return; | |
873 | ||
0fe7bf7b | 874 | /* Prepare for thread debugging. */ |
206d3d3c KB |
875 | base_target = current_target; |
876 | push_target (&aix_thread_ops); | |
c11d79f2 KB |
877 | pd_able = 1; |
878 | ||
0fe7bf7b MS |
879 | /* If we're debugging a core file or an attached inferior, the |
880 | pthread library may already have been initialized, so try to | |
881 | activate thread debugging. */ | |
c11d79f2 KB |
882 | pd_activate (1); |
883 | } | |
884 | ||
0fe7bf7b | 885 | /* Undo the effects of pd_enable(). */ |
c11d79f2 KB |
886 | |
887 | static void | |
888 | pd_disable (void) | |
889 | { | |
890 | if (!pd_able) | |
891 | return; | |
892 | if (pd_active) | |
893 | pd_deactivate (); | |
894 | pd_able = 0; | |
206d3d3c | 895 | unpush_target (&aix_thread_ops); |
c11d79f2 KB |
896 | } |
897 | ||
9a4105ab | 898 | /* deprecated_target_new_objfile_hook callback. |
c11d79f2 | 899 | |
0fe7bf7b MS |
900 | If OBJFILE is non-null, check whether a threaded application is |
901 | being debugged, and if so, prepare for thread debugging. | |
c11d79f2 | 902 | |
0fe7bf7b | 903 | If OBJFILE is null, stop debugging threads. */ |
c11d79f2 KB |
904 | |
905 | static void | |
906 | new_objfile (struct objfile *objfile) | |
907 | { | |
908 | if (objfile) | |
909 | pd_enable (); | |
910 | else | |
911 | pd_disable (); | |
912 | ||
913 | if (target_new_objfile_chain) | |
914 | target_new_objfile_chain (objfile); | |
915 | } | |
916 | ||
0fe7bf7b | 917 | /* Attach to process specified by ARGS. */ |
c11d79f2 KB |
918 | |
919 | static void | |
206d3d3c | 920 | aix_thread_attach (char *args, int from_tty) |
c11d79f2 | 921 | { |
206d3d3c | 922 | base_target.to_attach (args, from_tty); |
c11d79f2 KB |
923 | pd_activate (1); |
924 | } | |
925 | ||
206d3d3c | 926 | /* Detach from the process attached to by aix_thread_attach(). */ |
c11d79f2 KB |
927 | |
928 | static void | |
206d3d3c | 929 | aix_thread_detach (char *args, int from_tty) |
c11d79f2 | 930 | { |
6c0c456d | 931 | pd_disable (); |
206d3d3c | 932 | base_target.to_detach (args, from_tty); |
c11d79f2 KB |
933 | } |
934 | ||
935 | /* Tell the inferior process to continue running thread PID if != -1 | |
0fe7bf7b | 936 | and all threads otherwise. */ |
c11d79f2 KB |
937 | |
938 | static void | |
206d3d3c | 939 | aix_thread_resume (ptid_t ptid, int step, enum target_signal sig) |
c11d79f2 KB |
940 | { |
941 | struct thread_info *thread; | |
942 | pthdb_tid_t tid[2]; | |
943 | ||
944 | if (!PD_TID (ptid)) | |
14fa3751 KB |
945 | { |
946 | struct cleanup *cleanup = save_inferior_ptid (); | |
947 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c | 948 | base_target.to_resume (ptid, step, sig); |
14fa3751 KB |
949 | do_cleanups (cleanup); |
950 | } | |
c11d79f2 KB |
951 | else |
952 | { | |
953 | thread = find_thread_pid (ptid); | |
954 | if (!thread) | |
0fe7bf7b MS |
955 | error ("aix-thread resume: unknown pthread %ld", |
956 | TIDGET (ptid)); | |
c11d79f2 KB |
957 | |
958 | tid[0] = thread->private->tid; | |
959 | if (tid[0] == PTHDB_INVALID_TID) | |
0fe7bf7b MS |
960 | error ("aix-thread resume: no tid for pthread %ld", |
961 | TIDGET (ptid)); | |
c11d79f2 KB |
962 | tid[1] = 0; |
963 | ||
964 | if (arch64) | |
0fe7bf7b | 965 | ptrace64aix (PTT_CONTINUE, tid[0], 1, |
206d3d3c | 966 | target_signal_to_host (sig), (int *) tid); |
c11d79f2 KB |
967 | else |
968 | ptrace32 (PTT_CONTINUE, tid[0], (int *) 1, | |
206d3d3c | 969 | target_signal_to_host (sig), (int *) tid); |
c11d79f2 KB |
970 | } |
971 | } | |
972 | ||
0fe7bf7b MS |
973 | /* Wait for thread/process ID if != -1 or for any thread otherwise. |
974 | If an error occurs, return -1, else return the pid of the stopped | |
975 | thread. */ | |
c11d79f2 KB |
976 | |
977 | static ptid_t | |
206d3d3c | 978 | aix_thread_wait (ptid_t ptid, struct target_waitstatus *status) |
c11d79f2 | 979 | { |
14fa3751 KB |
980 | struct cleanup *cleanup = save_inferior_ptid (); |
981 | ||
c11d79f2 | 982 | pid_to_prc (&ptid); |
14fa3751 KB |
983 | |
984 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c | 985 | ptid = base_target.to_wait (ptid, status); |
14fa3751 KB |
986 | do_cleanups (cleanup); |
987 | ||
c11d79f2 KB |
988 | if (PIDGET (ptid) == -1) |
989 | return pid_to_ptid (-1); | |
990 | ||
0fe7bf7b | 991 | /* Check whether libpthdebug might be ready to be initialized. */ |
c11d79f2 KB |
992 | if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED && |
993 | status->value.sig == TARGET_SIGNAL_TRAP && | |
994 | read_pc_pid (ptid) - DECR_PC_AFTER_BREAK == pd_brk_addr) | |
995 | return pd_activate (0); | |
996 | ||
997 | return pd_update (0); | |
998 | } | |
999 | ||
0fe7bf7b | 1000 | /* Record that the 64-bit general-purpose registers contain VALS. */ |
c11d79f2 KB |
1001 | |
1002 | static void | |
1003 | supply_gprs64 (uint64_t *vals) | |
1004 | { | |
cdf2c5f5 | 1005 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1006 | int regno; |
1007 | ||
063715bf | 1008 | for (regno = 0; regno < ppc_num_gprs; regno++) |
cdf2c5f5 | 1009 | supply_register (tdep->ppc_gp0_regnum + regno, (char *) (vals + regno)); |
c11d79f2 KB |
1010 | } |
1011 | ||
0fe7bf7b | 1012 | /* Record that 32-bit register REGNO contains VAL. */ |
c11d79f2 KB |
1013 | |
1014 | static void | |
1015 | supply_reg32 (int regno, uint32_t val) | |
1016 | { | |
1017 | supply_register (regno, (char *) &val); | |
1018 | } | |
1019 | ||
0fe7bf7b | 1020 | /* Record that the floating-point registers contain VALS. */ |
c11d79f2 KB |
1021 | |
1022 | static void | |
1023 | supply_fprs (double *vals) | |
1024 | { | |
366f009f | 1025 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1026 | int regno; |
1027 | ||
383f0f5b JB |
1028 | /* This function should never be called on architectures without |
1029 | floating-point registers. */ | |
552e377b | 1030 | gdb_assert (ppc_floating_point_unit_p (current_gdbarch)); |
383f0f5b | 1031 | |
063715bf | 1032 | for (regno = 0; regno < ppc_num_fprs; regno++) |
366f009f | 1033 | supply_register (regno + tdep->ppc_fp0_regnum, (char *) (vals + regno)); |
c11d79f2 KB |
1034 | } |
1035 | ||
f1a91342 KB |
1036 | /* Predicate to test whether given register number is a "special" register. */ |
1037 | static int | |
1038 | special_register_p (int regno) | |
1039 | { | |
1040 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); | |
1041 | ||
1042 | return regno == PC_REGNUM | |
1043 | || regno == tdep->ppc_ps_regnum | |
1044 | || regno == tdep->ppc_cr_regnum | |
1045 | || regno == tdep->ppc_lr_regnum | |
1046 | || regno == tdep->ppc_ctr_regnum | |
1047 | || regno == tdep->ppc_xer_regnum | |
383f0f5b | 1048 | || (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_regnum) |
f1a91342 KB |
1049 | || (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum); |
1050 | } | |
1051 | ||
1052 | ||
0fe7bf7b MS |
1053 | /* Record that the special registers contain the specified 64-bit and |
1054 | 32-bit values. */ | |
c11d79f2 KB |
1055 | |
1056 | static void | |
1057 | supply_sprs64 (uint64_t iar, uint64_t msr, uint32_t cr, | |
0e061eef KB |
1058 | uint64_t lr, uint64_t ctr, uint32_t xer, |
1059 | uint32_t fpscr) | |
c11d79f2 | 1060 | { |
f1a91342 KB |
1061 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1062 | ||
1063 | supply_register (PC_REGNUM, (char *) &iar); | |
1064 | supply_register (tdep->ppc_ps_regnum, (char *) &msr); | |
1065 | supply_register (tdep->ppc_cr_regnum, (char *) &cr); | |
1066 | supply_register (tdep->ppc_lr_regnum, (char *) &lr); | |
1067 | supply_register (tdep->ppc_ctr_regnum, (char *) &ctr); | |
1068 | supply_register (tdep->ppc_xer_regnum, (char *) &xer); | |
383f0f5b JB |
1069 | if (tdep->ppc_fpscr_regnum >= 0) |
1070 | supply_register (tdep->ppc_fpscr_regnum, (char *) &fpscr); | |
c11d79f2 KB |
1071 | } |
1072 | ||
0fe7bf7b MS |
1073 | /* Record that the special registers contain the specified 32-bit |
1074 | values. */ | |
c11d79f2 KB |
1075 | |
1076 | static void | |
1077 | supply_sprs32 (uint32_t iar, uint32_t msr, uint32_t cr, | |
0e061eef KB |
1078 | uint32_t lr, uint32_t ctr, uint32_t xer, |
1079 | uint32_t fpscr) | |
c11d79f2 | 1080 | { |
f1a91342 KB |
1081 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1082 | ||
1083 | supply_register (PC_REGNUM, (char *) &iar); | |
1084 | supply_register (tdep->ppc_ps_regnum, (char *) &msr); | |
1085 | supply_register (tdep->ppc_cr_regnum, (char *) &cr); | |
1086 | supply_register (tdep->ppc_lr_regnum, (char *) &lr); | |
1087 | supply_register (tdep->ppc_ctr_regnum, (char *) &ctr); | |
1088 | supply_register (tdep->ppc_xer_regnum, (char *) &xer); | |
383f0f5b JB |
1089 | if (tdep->ppc_fpscr_regnum >= 0) |
1090 | supply_register (tdep->ppc_fpscr_regnum, (char *) &fpscr); | |
c11d79f2 KB |
1091 | } |
1092 | ||
1093 | /* Fetch all registers from pthread PDTID, which doesn't have a kernel | |
1094 | thread. | |
1095 | ||
0fe7bf7b MS |
1096 | There's no way to query a single register from a non-kernel |
1097 | pthread, so there's no need for a single-register version of this | |
1098 | function. */ | |
c11d79f2 KB |
1099 | |
1100 | static void | |
206d3d3c | 1101 | fetch_regs_user_thread (pthdb_pthread_t pdtid) |
c11d79f2 | 1102 | { |
cdf2c5f5 | 1103 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1104 | int status, i; |
1105 | pthdb_context_t ctx; | |
1106 | ||
8e2c28d4 | 1107 | if (debug_aix_thread) |
206d3d3c KB |
1108 | fprintf_unfiltered (gdb_stdlog, |
1109 | "fetch_regs_user_thread %lx\n", (long) pdtid); | |
c11d79f2 KB |
1110 | status = pthdb_pthread_context (pd_session, pdtid, &ctx); |
1111 | if (status != PTHDB_SUCCESS) | |
14fa3751 KB |
1112 | error ("aix-thread: fetch_registers: pthdb_pthread_context returned %s", |
1113 | pd_status2str (status)); | |
c11d79f2 | 1114 | |
0fe7bf7b | 1115 | /* General-purpose registers. */ |
c11d79f2 KB |
1116 | |
1117 | if (arch64) | |
1118 | supply_gprs64 (ctx.gpr); | |
1119 | else | |
063715bf | 1120 | for (i = 0; i < ppc_num_gprs; i++) |
cdf2c5f5 | 1121 | supply_reg32 (tdep->ppc_gp0_regnum + i, ctx.gpr[i]); |
c11d79f2 | 1122 | |
0fe7bf7b | 1123 | /* Floating-point registers. */ |
c11d79f2 | 1124 | |
552e377b | 1125 | if (ppc_floating_point_unit_p (current_gdbarch)) |
383f0f5b | 1126 | supply_fprs (ctx.fpr); |
c11d79f2 | 1127 | |
0fe7bf7b | 1128 | /* Special registers. */ |
c11d79f2 KB |
1129 | |
1130 | if (arch64) | |
0e061eef KB |
1131 | supply_sprs64 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer, |
1132 | ctx.fpscr); | |
c11d79f2 | 1133 | else |
0e061eef KB |
1134 | supply_sprs32 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer, |
1135 | ctx.fpscr); | |
c11d79f2 KB |
1136 | } |
1137 | ||
0fe7bf7b MS |
1138 | /* Fetch register REGNO if != -1 or all registers otherwise from |
1139 | kernel thread TID. | |
c11d79f2 | 1140 | |
0fe7bf7b MS |
1141 | AIX provides a way to query all of a kernel thread's GPRs, FPRs, or |
1142 | SPRs, but there's no way to query individual registers within those | |
1143 | groups. Therefore, if REGNO != -1, this function fetches an entire | |
1144 | group. | |
c11d79f2 | 1145 | |
0fe7bf7b MS |
1146 | Unfortunately, kernel thread register queries often fail with |
1147 | EPERM, indicating that the thread is in kernel space. This breaks | |
1148 | backtraces of threads other than the current one. To make that | |
1149 | breakage obvious without throwing an error to top level (which is | |
1150 | bad e.g. during "info threads" output), zero registers that can't | |
1151 | be retrieved. */ | |
c11d79f2 KB |
1152 | |
1153 | static void | |
206d3d3c | 1154 | fetch_regs_kernel_thread (int regno, pthdb_tid_t tid) |
c11d79f2 | 1155 | { |
366f009f | 1156 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
063715bf JB |
1157 | uint64_t gprs64[ppc_num_gprs]; |
1158 | uint32_t gprs32[ppc_num_gprs]; | |
1159 | double fprs[ppc_num_fprs]; | |
c11d79f2 KB |
1160 | struct ptxsprs sprs64; |
1161 | struct ptsprs sprs32; | |
1162 | int i; | |
1163 | ||
8e2c28d4 KB |
1164 | if (debug_aix_thread) |
1165 | fprintf_unfiltered (gdb_stdlog, | |
206d3d3c KB |
1166 | "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n", |
1167 | (long) tid, regno, arch64); | |
c11d79f2 | 1168 | |
0fe7bf7b | 1169 | /* General-purpose registers. */ |
daf6dc85 JB |
1170 | if (regno == -1 |
1171 | || (tdep->ppc_gp0_regnum <= regno | |
1172 | && regno < tdep->ppc_gp0_regnum + ppc_num_gprs)) | |
c11d79f2 KB |
1173 | { |
1174 | if (arch64) | |
1175 | { | |
0fe7bf7b MS |
1176 | if (!ptrace64aix (PTT_READ_GPRS, tid, |
1177 | (unsigned long) gprs64, 0, NULL)) | |
c11d79f2 KB |
1178 | memset (gprs64, 0, sizeof (gprs64)); |
1179 | supply_gprs64 (gprs64); | |
1180 | } | |
1181 | else | |
1182 | { | |
1183 | if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL)) | |
1184 | memset (gprs32, 0, sizeof (gprs32)); | |
063715bf | 1185 | for (i = 0; i < ppc_num_gprs; i++) |
cdf2c5f5 | 1186 | supply_reg32 (tdep->ppc_gp0_regnum + i, gprs32[i]); |
c11d79f2 KB |
1187 | } |
1188 | } | |
1189 | ||
0fe7bf7b | 1190 | /* Floating-point registers. */ |
c11d79f2 | 1191 | |
383f0f5b JB |
1192 | if (ppc_floating_point_unit_p (current_gdbarch) |
1193 | && (regno == -1 | |
1194 | || (regno >= tdep->ppc_fp0_regnum | |
1195 | && regno < tdep->ppc_fp0_regnum + ppc_num_fprs))) | |
c11d79f2 KB |
1196 | { |
1197 | if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL)) | |
1198 | memset (fprs, 0, sizeof (fprs)); | |
1199 | supply_fprs (fprs); | |
1200 | } | |
1201 | ||
0fe7bf7b | 1202 | /* Special-purpose registers. */ |
c11d79f2 | 1203 | |
f1a91342 | 1204 | if (regno == -1 || special_register_p (regno)) |
c11d79f2 KB |
1205 | { |
1206 | if (arch64) | |
1207 | { | |
0fe7bf7b MS |
1208 | if (!ptrace64aix (PTT_READ_SPRS, tid, |
1209 | (unsigned long) &sprs64, 0, NULL)) | |
c11d79f2 KB |
1210 | memset (&sprs64, 0, sizeof (sprs64)); |
1211 | supply_sprs64 (sprs64.pt_iar, sprs64.pt_msr, sprs64.pt_cr, | |
0e061eef KB |
1212 | sprs64.pt_lr, sprs64.pt_ctr, sprs64.pt_xer, |
1213 | sprs64.pt_fpscr); | |
c11d79f2 KB |
1214 | } |
1215 | else | |
1216 | { | |
f1a91342 KB |
1217 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1218 | ||
c11d79f2 KB |
1219 | if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL)) |
1220 | memset (&sprs32, 0, sizeof (sprs32)); | |
1221 | supply_sprs32 (sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr, | |
0e061eef KB |
1222 | sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer, |
1223 | sprs32.pt_fpscr); | |
c11d79f2 | 1224 | |
f1a91342 KB |
1225 | if (tdep->ppc_mq_regnum >= 0) |
1226 | supply_register (tdep->ppc_mq_regnum, (char *) &sprs32.pt_mq); | |
c11d79f2 KB |
1227 | } |
1228 | } | |
1229 | } | |
1230 | ||
1231 | /* Fetch register REGNO if != -1 or all registers otherwise in the | |
0fe7bf7b | 1232 | thread/process specified by inferior_ptid. */ |
c11d79f2 KB |
1233 | |
1234 | static void | |
206d3d3c | 1235 | aix_thread_fetch_registers (int regno) |
c11d79f2 KB |
1236 | { |
1237 | struct thread_info *thread; | |
1238 | pthdb_tid_t tid; | |
1239 | ||
1240 | if (!PD_TID (inferior_ptid)) | |
206d3d3c | 1241 | base_target.to_fetch_registers (regno); |
c11d79f2 KB |
1242 | else |
1243 | { | |
1244 | thread = find_thread_pid (inferior_ptid); | |
1245 | tid = thread->private->tid; | |
1246 | ||
1247 | if (tid == PTHDB_INVALID_TID) | |
206d3d3c | 1248 | fetch_regs_user_thread (thread->private->pdtid); |
c11d79f2 | 1249 | else |
206d3d3c | 1250 | fetch_regs_kernel_thread (regno, tid); |
c11d79f2 KB |
1251 | } |
1252 | } | |
1253 | ||
61c5da0b KB |
1254 | /* Store the gp registers into an array of uint32_t or uint64_t. */ |
1255 | ||
1256 | static void | |
1257 | fill_gprs64 (uint64_t *vals) | |
1258 | { | |
366f009f | 1259 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
61c5da0b KB |
1260 | int regno; |
1261 | ||
daf6dc85 JB |
1262 | for (regno = 0; regno < ppc_num_gprs; regno++) |
1263 | if (register_cached (tdep->ppc_gp0_regnum + regno)) | |
1264 | regcache_collect (tdep->ppc_gp0_regnum + regno, vals + regno); | |
61c5da0b KB |
1265 | } |
1266 | ||
1267 | static void | |
1268 | fill_gprs32 (uint32_t *vals) | |
1269 | { | |
366f009f | 1270 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
61c5da0b KB |
1271 | int regno; |
1272 | ||
daf6dc85 JB |
1273 | for (regno = 0; regno < ppc_num_gprs; regno++) |
1274 | if (register_cached (tdep->ppc_gp0_regnum + regno)) | |
1275 | regcache_collect (tdep->ppc_gp0_regnum + regno, vals + regno); | |
61c5da0b KB |
1276 | } |
1277 | ||
1278 | /* Store the floating point registers into a double array. */ | |
1279 | static void | |
1280 | fill_fprs (double *vals) | |
1281 | { | |
366f009f | 1282 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
61c5da0b KB |
1283 | int regno; |
1284 | ||
383f0f5b JB |
1285 | /* This function should never be called on architectures without |
1286 | floating-point registers. */ | |
552e377b | 1287 | gdb_assert (ppc_floating_point_unit_p (current_gdbarch)); |
383f0f5b | 1288 | |
366f009f JB |
1289 | for (regno = tdep->ppc_fp0_regnum; |
1290 | regno < tdep->ppc_fp0_regnum + ppc_num_fprs; | |
1291 | regno++) | |
cbe92db4 KB |
1292 | if (register_cached (regno)) |
1293 | regcache_collect (regno, vals + regno); | |
61c5da0b KB |
1294 | } |
1295 | ||
c11d79f2 | 1296 | /* Store the special registers into the specified 64-bit and 32-bit |
0fe7bf7b | 1297 | locations. */ |
c11d79f2 KB |
1298 | |
1299 | static void | |
1300 | fill_sprs64 (uint64_t *iar, uint64_t *msr, uint32_t *cr, | |
0e061eef KB |
1301 | uint64_t *lr, uint64_t *ctr, uint32_t *xer, |
1302 | uint32_t *fpscr) | |
c11d79f2 | 1303 | { |
f1a91342 KB |
1304 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1305 | ||
1306 | /* Verify that the size of the size of the IAR buffer is the | |
1307 | same as the raw size of the PC (in the register cache). If | |
1308 | they're not, then either GDB has been built incorrectly, or | |
1309 | there's some other kind of internal error. To be really safe, | |
1310 | we should check all of the sizes. */ | |
12c266ea | 1311 | gdb_assert (sizeof (*iar) == DEPRECATED_REGISTER_RAW_SIZE (PC_REGNUM)); |
f1a91342 KB |
1312 | |
1313 | if (register_cached (PC_REGNUM)) | |
1314 | regcache_collect (PC_REGNUM, iar); | |
1315 | if (register_cached (tdep->ppc_ps_regnum)) | |
1316 | regcache_collect (tdep->ppc_ps_regnum, msr); | |
1317 | if (register_cached (tdep->ppc_cr_regnum)) | |
1318 | regcache_collect (tdep->ppc_cr_regnum, cr); | |
1319 | if (register_cached (tdep->ppc_lr_regnum)) | |
1320 | regcache_collect (tdep->ppc_lr_regnum, lr); | |
1321 | if (register_cached (tdep->ppc_ctr_regnum)) | |
1322 | regcache_collect (tdep->ppc_ctr_regnum, ctr); | |
1323 | if (register_cached (tdep->ppc_xer_regnum)) | |
1324 | regcache_collect (tdep->ppc_xer_regnum, xer); | |
383f0f5b JB |
1325 | if (tdep->ppc_fpscr_regnum >= 0 |
1326 | && register_cached (tdep->ppc_fpscr_regnum)) | |
0e061eef | 1327 | regcache_collect (tdep->ppc_fpscr_regnum, fpscr); |
61c5da0b KB |
1328 | } |
1329 | ||
1330 | static void | |
1331 | fill_sprs32 (unsigned long *iar, unsigned long *msr, unsigned long *cr, | |
0e061eef KB |
1332 | unsigned long *lr, unsigned long *ctr, unsigned long *xer, |
1333 | unsigned long *fpscr) | |
61c5da0b | 1334 | { |
f1a91342 KB |
1335 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
1336 | ||
1337 | /* Verify that the size of the size of the IAR buffer is the | |
1338 | same as the raw size of the PC (in the register cache). If | |
1339 | they're not, then either GDB has been built incorrectly, or | |
1340 | there's some other kind of internal error. To be really safe, | |
1341 | we should check all of the sizes. | |
61c5da0b | 1342 | |
f1a91342 | 1343 | If this assert() fails, the most likely reason is that GDB was |
61c5da0b KB |
1344 | built incorrectly. In order to make use of many of the header |
1345 | files in /usr/include/sys, GDB needs to be configured so that | |
1346 | sizeof (long) == 4). */ | |
12c266ea | 1347 | gdb_assert (sizeof (*iar) == DEPRECATED_REGISTER_RAW_SIZE (PC_REGNUM)); |
f1a91342 KB |
1348 | |
1349 | if (register_cached (PC_REGNUM)) | |
1350 | regcache_collect (PC_REGNUM, iar); | |
1351 | if (register_cached (tdep->ppc_ps_regnum)) | |
1352 | regcache_collect (tdep->ppc_ps_regnum, msr); | |
1353 | if (register_cached (tdep->ppc_cr_regnum)) | |
1354 | regcache_collect (tdep->ppc_cr_regnum, cr); | |
1355 | if (register_cached (tdep->ppc_lr_regnum)) | |
1356 | regcache_collect (tdep->ppc_lr_regnum, lr); | |
1357 | if (register_cached (tdep->ppc_ctr_regnum)) | |
1358 | regcache_collect (tdep->ppc_ctr_regnum, ctr); | |
1359 | if (register_cached (tdep->ppc_xer_regnum)) | |
1360 | regcache_collect (tdep->ppc_xer_regnum, xer); | |
383f0f5b JB |
1361 | if (tdep->ppc_fpscr_regnum >= 0 |
1362 | && register_cached (tdep->ppc_fpscr_regnum)) | |
0e061eef | 1363 | regcache_collect (tdep->ppc_fpscr_regnum, fpscr); |
c11d79f2 KB |
1364 | } |
1365 | ||
1366 | /* Store all registers into pthread PDTID, which doesn't have a kernel | |
1367 | thread. | |
1368 | ||
0fe7bf7b MS |
1369 | It's possible to store a single register into a non-kernel pthread, |
1370 | but I doubt it's worth the effort. */ | |
c11d79f2 KB |
1371 | |
1372 | static void | |
206d3d3c | 1373 | store_regs_user_thread (pthdb_pthread_t pdtid) |
c11d79f2 | 1374 | { |
cdf2c5f5 | 1375 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
c11d79f2 KB |
1376 | int status, i; |
1377 | pthdb_context_t ctx; | |
61c5da0b KB |
1378 | uint32_t int32; |
1379 | uint64_t int64; | |
1380 | double dbl; | |
c11d79f2 | 1381 | |
8e2c28d4 | 1382 | if (debug_aix_thread) |
0fe7bf7b | 1383 | fprintf_unfiltered (gdb_stdlog, |
206d3d3c | 1384 | "store_regs_user_thread %lx\n", (long) pdtid); |
c11d79f2 | 1385 | |
0fe7bf7b MS |
1386 | /* Retrieve the thread's current context for its non-register |
1387 | values. */ | |
c11d79f2 KB |
1388 | status = pthdb_pthread_context (pd_session, pdtid, &ctx); |
1389 | if (status != PTHDB_SUCCESS) | |
14fa3751 KB |
1390 | error ("aix-thread: store_registers: pthdb_pthread_context returned %s", |
1391 | pd_status2str (status)); | |
c11d79f2 | 1392 | |
61c5da0b | 1393 | /* Collect general-purpose register values from the regcache. */ |
c11d79f2 | 1394 | |
063715bf | 1395 | for (i = 0; i < ppc_num_gprs; i++) |
cdf2c5f5 | 1396 | if (register_cached (tdep->ppc_gp0_regnum + i)) |
cbe92db4 KB |
1397 | { |
1398 | if (arch64) | |
1399 | { | |
cdf2c5f5 | 1400 | regcache_collect (tdep->ppc_gp0_regnum + i, (void *) &int64); |
cbe92db4 KB |
1401 | ctx.gpr[i] = int64; |
1402 | } | |
1403 | else | |
1404 | { | |
cdf2c5f5 | 1405 | regcache_collect (tdep->ppc_gp0_regnum + i, (void *) &int32); |
cbe92db4 KB |
1406 | ctx.gpr[i] = int32; |
1407 | } | |
1408 | } | |
c11d79f2 | 1409 | |
61c5da0b | 1410 | /* Collect floating-point register values from the regcache. */ |
552e377b | 1411 | if (ppc_floating_point_unit_p (current_gdbarch)) |
383f0f5b | 1412 | fill_fprs (ctx.fpr); |
c11d79f2 | 1413 | |
61c5da0b KB |
1414 | /* Special registers (always kept in ctx as 64 bits). */ |
1415 | if (arch64) | |
1416 | { | |
0e061eef KB |
1417 | fill_sprs64 (&ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr, &ctx.xer, |
1418 | &ctx.fpscr); | |
61c5da0b KB |
1419 | } |
1420 | else | |
1421 | { | |
1422 | /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32. | |
1423 | Solution: use 32-bit temp variables. (The assert() in fill_sprs32() | |
1424 | will fail if the size of an unsigned long is incorrect. If this | |
1425 | happens, GDB needs to be reconfigured so that longs are 32-bits.) */ | |
0e061eef KB |
1426 | unsigned long tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer, |
1427 | tmp_fpscr; | |
61c5da0b | 1428 | |
0e061eef KB |
1429 | fill_sprs32 (&tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr, &tmp_xer, |
1430 | &tmp_fpscr); | |
f1a91342 | 1431 | if (register_cached (PC_REGNUM)) |
cbe92db4 | 1432 | ctx.iar = tmp_iar; |
f1a91342 | 1433 | if (register_cached (tdep->ppc_ps_regnum)) |
cbe92db4 | 1434 | ctx.msr = tmp_msr; |
f1a91342 | 1435 | if (register_cached (tdep->ppc_cr_regnum)) |
cbe92db4 | 1436 | ctx.cr = tmp_cr; |
f1a91342 | 1437 | if (register_cached (tdep->ppc_lr_regnum)) |
cbe92db4 | 1438 | ctx.lr = tmp_lr; |
f1a91342 | 1439 | if (register_cached (tdep->ppc_ctr_regnum)) |
cbe92db4 | 1440 | ctx.ctr = tmp_ctr; |
f1a91342 | 1441 | if (register_cached (tdep->ppc_xer_regnum)) |
cbe92db4 | 1442 | ctx.xer = tmp_xer; |
0e061eef KB |
1443 | if (register_cached (tdep->ppc_xer_regnum)) |
1444 | ctx.fpscr = tmp_fpscr; | |
61c5da0b | 1445 | } |
c11d79f2 KB |
1446 | |
1447 | status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx); | |
1448 | if (status != PTHDB_SUCCESS) | |
14fa3751 KB |
1449 | error ("aix-thread: store_registers: pthdb_pthread_setcontext returned %s", |
1450 | pd_status2str (status)); | |
c11d79f2 KB |
1451 | } |
1452 | ||
0fe7bf7b MS |
1453 | /* Store register REGNO if != -1 or all registers otherwise into |
1454 | kernel thread TID. | |
c11d79f2 | 1455 | |
0fe7bf7b MS |
1456 | AIX provides a way to set all of a kernel thread's GPRs, FPRs, or |
1457 | SPRs, but there's no way to set individual registers within those | |
1458 | groups. Therefore, if REGNO != -1, this function stores an entire | |
1459 | group. */ | |
c11d79f2 KB |
1460 | |
1461 | static void | |
206d3d3c | 1462 | store_regs_kernel_thread (int regno, pthdb_tid_t tid) |
c11d79f2 | 1463 | { |
366f009f | 1464 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
063715bf JB |
1465 | uint64_t gprs64[ppc_num_gprs]; |
1466 | uint32_t gprs32[ppc_num_gprs]; | |
1467 | double fprs[ppc_num_fprs]; | |
c11d79f2 | 1468 | struct ptxsprs sprs64; |
61c5da0b KB |
1469 | struct ptsprs sprs32; |
1470 | int i; | |
c11d79f2 | 1471 | |
8e2c28d4 | 1472 | if (debug_aix_thread) |
206d3d3c KB |
1473 | fprintf_unfiltered (gdb_stdlog, |
1474 | "store_regs_kernel_thread tid=%lx regno=%d\n", | |
1475 | (long) tid, regno); | |
c11d79f2 | 1476 | |
0fe7bf7b | 1477 | /* General-purpose registers. */ |
daf6dc85 JB |
1478 | if (regno == -1 |
1479 | || (tdep->ppc_gp0_regnum <= regno | |
1480 | && regno < tdep->ppc_gp0_regnum + ppc_num_fprs)) | |
c11d79f2 | 1481 | { |
c11d79f2 | 1482 | if (arch64) |
61c5da0b | 1483 | { |
cbe92db4 KB |
1484 | /* Pre-fetch: some regs may not be in the cache. */ |
1485 | ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL); | |
61c5da0b KB |
1486 | fill_gprs64 (gprs64); |
1487 | ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL); | |
1488 | } | |
c11d79f2 | 1489 | else |
61c5da0b | 1490 | { |
cbe92db4 KB |
1491 | /* Pre-fetch: some regs may not be in the cache. */ |
1492 | ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL); | |
61c5da0b KB |
1493 | fill_gprs32 (gprs32); |
1494 | ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL); | |
1495 | } | |
c11d79f2 KB |
1496 | } |
1497 | ||
0fe7bf7b | 1498 | /* Floating-point registers. */ |
c11d79f2 | 1499 | |
383f0f5b JB |
1500 | if (ppc_floating_point_unit_p (current_gdbarch) |
1501 | && (regno == -1 | |
1502 | || (regno >= tdep->ppc_fp0_regnum | |
1503 | && regno < tdep->ppc_fp0_regnum + ppc_num_fprs))) | |
c11d79f2 | 1504 | { |
cbe92db4 KB |
1505 | /* Pre-fetch: some regs may not be in the cache. */ |
1506 | ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL); | |
61c5da0b KB |
1507 | fill_fprs (fprs); |
1508 | ptrace32 (PTT_WRITE_FPRS, tid, (int *) fprs, 0, NULL); | |
c11d79f2 KB |
1509 | } |
1510 | ||
0fe7bf7b | 1511 | /* Special-purpose registers. */ |
c11d79f2 | 1512 | |
f1a91342 | 1513 | if (regno == -1 || special_register_p (regno)) |
c11d79f2 KB |
1514 | { |
1515 | if (arch64) | |
1516 | { | |
cbe92db4 | 1517 | /* Pre-fetch: some registers won't be in the cache. */ |
0fe7bf7b MS |
1518 | ptrace64aix (PTT_READ_SPRS, tid, |
1519 | (unsigned long) &sprs64, 0, NULL); | |
c11d79f2 | 1520 | fill_sprs64 (&sprs64.pt_iar, &sprs64.pt_msr, &sprs64.pt_cr, |
0e061eef KB |
1521 | &sprs64.pt_lr, &sprs64.pt_ctr, &sprs64.pt_xer, |
1522 | &sprs64.pt_fpscr); | |
0fe7bf7b MS |
1523 | ptrace64aix (PTT_WRITE_SPRS, tid, |
1524 | (unsigned long) &sprs64, 0, NULL); | |
c11d79f2 KB |
1525 | } |
1526 | else | |
1527 | { | |
cbe92db4 | 1528 | /* Pre-fetch: some registers won't be in the cache. */ |
c11d79f2 KB |
1529 | ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL); |
1530 | ||
61c5da0b | 1531 | fill_sprs32 (&sprs32.pt_iar, &sprs32.pt_msr, &sprs32.pt_cr, |
0e061eef KB |
1532 | &sprs32.pt_lr, &sprs32.pt_ctr, &sprs32.pt_xer, |
1533 | &sprs32.pt_fpscr); | |
c11d79f2 | 1534 | |
f1a91342 KB |
1535 | if (tdep->ppc_mq_regnum >= 0) |
1536 | if (register_cached (tdep->ppc_mq_regnum)) | |
1537 | regcache_collect (tdep->ppc_mq_regnum, &sprs32.pt_mq); | |
c11d79f2 KB |
1538 | |
1539 | ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL); | |
1540 | } | |
1541 | } | |
1542 | } | |
1543 | ||
0fe7bf7b MS |
1544 | /* Store gdb's current view of the register set into the |
1545 | thread/process specified by inferior_ptid. */ | |
c11d79f2 KB |
1546 | |
1547 | static void | |
206d3d3c | 1548 | aix_thread_store_registers (int regno) |
c11d79f2 KB |
1549 | { |
1550 | struct thread_info *thread; | |
1551 | pthdb_tid_t tid; | |
1552 | ||
1553 | if (!PD_TID (inferior_ptid)) | |
206d3d3c | 1554 | base_target.to_store_registers (regno); |
c11d79f2 KB |
1555 | else |
1556 | { | |
1557 | thread = find_thread_pid (inferior_ptid); | |
1558 | tid = thread->private->tid; | |
1559 | ||
1560 | if (tid == PTHDB_INVALID_TID) | |
206d3d3c | 1561 | store_regs_user_thread (thread->private->pdtid); |
c11d79f2 | 1562 | else |
206d3d3c | 1563 | store_regs_kernel_thread (regno, tid); |
c11d79f2 KB |
1564 | } |
1565 | } | |
1566 | ||
0fe7bf7b MS |
1567 | /* Transfer LEN bytes of memory from GDB address MYADDR to target |
1568 | address MEMADDR if WRITE and vice versa otherwise. */ | |
c11d79f2 KB |
1569 | |
1570 | static int | |
206d3d3c KB |
1571 | aix_thread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
1572 | struct mem_attrib *attrib, | |
1573 | struct target_ops *target) | |
c11d79f2 KB |
1574 | { |
1575 | int n; | |
14fa3751 KB |
1576 | struct cleanup *cleanup = save_inferior_ptid (); |
1577 | ||
1578 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c KB |
1579 | n = base_target.to_xfer_memory (memaddr, myaddr, len, |
1580 | write, attrib, &base_target); | |
14fa3751 | 1581 | do_cleanups (cleanup); |
c11d79f2 | 1582 | |
c11d79f2 KB |
1583 | return n; |
1584 | } | |
1585 | ||
0fe7bf7b | 1586 | /* Kill and forget about the inferior process. */ |
c11d79f2 KB |
1587 | |
1588 | static void | |
206d3d3c | 1589 | aix_thread_kill (void) |
c11d79f2 | 1590 | { |
14fa3751 KB |
1591 | struct cleanup *cleanup = save_inferior_ptid (); |
1592 | ||
1593 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
206d3d3c | 1594 | base_target.to_kill (); |
14fa3751 | 1595 | do_cleanups (cleanup); |
c11d79f2 KB |
1596 | } |
1597 | ||
0fe7bf7b | 1598 | /* Clean up after the inferior exits. */ |
c11d79f2 KB |
1599 | |
1600 | static void | |
206d3d3c | 1601 | aix_thread_mourn_inferior (void) |
c11d79f2 KB |
1602 | { |
1603 | pd_deactivate (); | |
206d3d3c | 1604 | base_target.to_mourn_inferior (); |
c11d79f2 KB |
1605 | } |
1606 | ||
0fe7bf7b | 1607 | /* Return whether thread PID is still valid. */ |
c11d79f2 KB |
1608 | |
1609 | static int | |
206d3d3c | 1610 | aix_thread_thread_alive (ptid_t ptid) |
c11d79f2 KB |
1611 | { |
1612 | if (!PD_TID (ptid)) | |
206d3d3c | 1613 | return base_target.to_thread_alive (ptid); |
c11d79f2 | 1614 | |
0fe7bf7b MS |
1615 | /* We update the thread list every time the child stops, so all |
1616 | valid threads should be in the thread list. */ | |
c11d79f2 KB |
1617 | return in_thread_list (ptid); |
1618 | } | |
1619 | ||
0fe7bf7b MS |
1620 | /* Return a printable representation of composite PID for use in |
1621 | "info threads" output. */ | |
c11d79f2 KB |
1622 | |
1623 | static char * | |
206d3d3c | 1624 | aix_thread_pid_to_str (ptid_t ptid) |
c11d79f2 KB |
1625 | { |
1626 | static char *ret = NULL; | |
1627 | ||
1628 | if (!PD_TID (ptid)) | |
206d3d3c | 1629 | return base_target.to_pid_to_str (ptid); |
c11d79f2 KB |
1630 | |
1631 | /* Free previous return value; a new one will be allocated by | |
1632 | xasprintf(). */ | |
1633 | xfree (ret); | |
1634 | ||
1635 | xasprintf (&ret, "Thread %ld", ptid_get_tid (ptid)); | |
1636 | return ret; | |
1637 | } | |
1638 | ||
0fe7bf7b MS |
1639 | /* Return a printable representation of extra information about |
1640 | THREAD, for use in "info threads" output. */ | |
c11d79f2 KB |
1641 | |
1642 | static char * | |
206d3d3c | 1643 | aix_thread_extra_thread_info (struct thread_info *thread) |
c11d79f2 KB |
1644 | { |
1645 | struct ui_file *buf; | |
1646 | int status; | |
1647 | pthdb_pthread_t pdtid; | |
1648 | pthdb_tid_t tid; | |
1649 | pthdb_state_t state; | |
1650 | pthdb_suspendstate_t suspendstate; | |
1651 | pthdb_detachstate_t detachstate; | |
1652 | int cancelpend; | |
1653 | long length; | |
1654 | static char *ret = NULL; | |
1655 | ||
1656 | if (!PD_TID (thread->ptid)) | |
1657 | return NULL; | |
1658 | ||
1659 | buf = mem_fileopen (); | |
1660 | ||
1661 | pdtid = thread->private->pdtid; | |
1662 | tid = thread->private->tid; | |
1663 | ||
1664 | if (tid != PTHDB_INVALID_TID) | |
1665 | fprintf_unfiltered (buf, "tid %d", tid); | |
1666 | ||
1667 | status = pthdb_pthread_state (pd_session, pdtid, &state); | |
1668 | if (status != PTHDB_SUCCESS) | |
1669 | state = PST_NOTSUP; | |
1670 | fprintf_unfiltered (buf, ", %s", state2str (state)); | |
1671 | ||
0fe7bf7b MS |
1672 | status = pthdb_pthread_suspendstate (pd_session, pdtid, |
1673 | &suspendstate); | |
c11d79f2 KB |
1674 | if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED) |
1675 | fprintf_unfiltered (buf, ", suspended"); | |
1676 | ||
0fe7bf7b MS |
1677 | status = pthdb_pthread_detachstate (pd_session, pdtid, |
1678 | &detachstate); | |
c11d79f2 KB |
1679 | if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED) |
1680 | fprintf_unfiltered (buf, ", detached"); | |
1681 | ||
1682 | pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend); | |
1683 | if (status == PTHDB_SUCCESS && cancelpend) | |
1684 | fprintf_unfiltered (buf, ", cancel pending"); | |
1685 | ||
1686 | ui_file_write (buf, "", 1); | |
1687 | ||
1688 | xfree (ret); /* Free old buffer. */ | |
1689 | ||
1690 | ret = ui_file_xstrdup (buf, &length); | |
1691 | ui_file_delete (buf); | |
1692 | ||
1693 | return ret; | |
1694 | } | |
1695 | ||
206d3d3c | 1696 | /* Initialize target aix_thread_ops. */ |
c11d79f2 KB |
1697 | |
1698 | static void | |
206d3d3c | 1699 | init_aix_thread_ops (void) |
c11d79f2 | 1700 | { |
206d3d3c KB |
1701 | aix_thread_ops.to_shortname = "aix-threads"; |
1702 | aix_thread_ops.to_longname = "AIX pthread support"; | |
1703 | aix_thread_ops.to_doc = "AIX pthread support"; | |
1704 | ||
1705 | aix_thread_ops.to_attach = aix_thread_attach; | |
1706 | aix_thread_ops.to_detach = aix_thread_detach; | |
1707 | aix_thread_ops.to_resume = aix_thread_resume; | |
1708 | aix_thread_ops.to_wait = aix_thread_wait; | |
1709 | aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers; | |
1710 | aix_thread_ops.to_store_registers = aix_thread_store_registers; | |
1711 | aix_thread_ops.to_xfer_memory = aix_thread_xfer_memory; | |
1712 | /* No need for aix_thread_ops.to_create_inferior, because we activate thread | |
0fe7bf7b | 1713 | debugging when the inferior reaches pd_brk_addr. */ |
206d3d3c KB |
1714 | aix_thread_ops.to_kill = aix_thread_kill; |
1715 | aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior; | |
1716 | aix_thread_ops.to_thread_alive = aix_thread_thread_alive; | |
1717 | aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str; | |
1718 | aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info; | |
1719 | aix_thread_ops.to_stratum = thread_stratum; | |
1720 | aix_thread_ops.to_magic = OPS_MAGIC; | |
c11d79f2 KB |
1721 | } |
1722 | ||
1723 | /* Module startup initialization function, automagically called by | |
0fe7bf7b | 1724 | init.c. */ |
c11d79f2 KB |
1725 | |
1726 | void | |
1727 | _initialize_aix_thread (void) | |
1728 | { | |
206d3d3c KB |
1729 | init_aix_thread_ops (); |
1730 | add_target (&aix_thread_ops); | |
c11d79f2 | 1731 | |
0fe7bf7b | 1732 | /* Notice when object files get loaded and unloaded. */ |
9a4105ab AC |
1733 | target_new_objfile_chain = deprecated_target_new_objfile_hook; |
1734 | deprecated_target_new_objfile_hook = new_objfile; | |
8e2c28d4 KB |
1735 | |
1736 | add_show_from_set (add_set_cmd ("aix-thread", no_class, var_zinteger, | |
1737 | (char *) &debug_aix_thread, | |
1738 | "Set debugging of AIX thread module.\n" | |
1739 | "Enables printf debugging output.\n", | |
1740 | &setdebuglist), | |
1741 | &showdebuglist); | |
c11d79f2 | 1742 | } |