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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" |
c11d79f2 KB |
51 | |
52 | #if 0 | |
53 | #include "coff/internal.h" /* for libcoff.h */ | |
54 | #include "bfd/libcoff.h" /* for xcoff_data */ | |
55 | #endif | |
56 | ||
57 | #include <procinfo.h> | |
58 | #include <sys/types.h> | |
59 | #include <sys/ptrace.h> | |
60 | #include <sys/reg.h> | |
61 | #if 0 | |
62 | #include <pthread.h> | |
63 | #endif | |
64 | #include <sched.h> | |
65 | #include <sys/pthdebug.h> | |
66 | ||
0fe7bf7b | 67 | /* Whether to emit debugging output. */ |
8e2c28d4 | 68 | static int debug_aix_thread; |
c11d79f2 | 69 | |
0fe7bf7b | 70 | /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */ |
c11d79f2 KB |
71 | #ifndef PTHDB_VERSION_3 |
72 | #define pthdb_tid_t tid_t | |
73 | #endif | |
74 | ||
0fe7bf7b | 75 | /* Return whether to treat PID as a debuggable thread id. */ |
c11d79f2 KB |
76 | |
77 | #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0) | |
78 | ||
79 | /* Build a thread ptid. */ | |
80 | #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID) | |
81 | ||
82 | /* Build and lwp ptid. */ | |
83 | #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP) | |
84 | ||
c11d79f2 | 85 | /* pthdb_user_t value that we pass to pthdb functions. 0 causes |
0fe7bf7b | 86 | PTHDB_BAD_USER errors, so use 1. */ |
c11d79f2 KB |
87 | |
88 | #define PD_USER 1 | |
89 | ||
0fe7bf7b | 90 | /* Success and failure values returned by pthdb callbacks. */ |
c11d79f2 KB |
91 | |
92 | #define PDC_SUCCESS PTHDB_SUCCESS | |
93 | #define PDC_FAILURE PTHDB_CALLBACK | |
94 | ||
0fe7bf7b | 95 | /* Private data attached to each element in GDB's thread list. */ |
c11d79f2 KB |
96 | |
97 | struct private_thread_info { | |
0fe7bf7b | 98 | pthdb_pthread_t pdtid; /* thread's libpthdebug id */ |
c11d79f2 KB |
99 | pthdb_tid_t tid; /* kernel thread id */ |
100 | }; | |
101 | ||
0fe7bf7b | 102 | /* Information about a thread of which libpthdebug is aware. */ |
c11d79f2 KB |
103 | |
104 | struct pd_thread { | |
105 | pthdb_pthread_t pdtid; | |
106 | pthread_t pthid; | |
107 | pthdb_tid_t tid; | |
108 | }; | |
109 | ||
0fe7bf7b | 110 | /* This module's target-specific operations, active while pd_able is true. */ |
c11d79f2 KB |
111 | |
112 | static struct target_ops ops; | |
113 | ||
0fe7bf7b MS |
114 | /* Copy of the target over which ops is pushed. |
115 | This is more convenient than a pointer to child_ops or core_ops, | |
116 | because they lack current_target's default callbacks. */ | |
c11d79f2 KB |
117 | |
118 | static struct target_ops base_ops; | |
119 | ||
0fe7bf7b MS |
120 | /* Address of the function that libpthread will call when libpthdebug |
121 | is ready to be initialized. */ | |
c11d79f2 KB |
122 | |
123 | static CORE_ADDR pd_brk_addr; | |
124 | ||
0fe7bf7b | 125 | /* Whether the current application is debuggable by pthdb. */ |
c11d79f2 KB |
126 | |
127 | static int pd_able = 0; | |
128 | ||
0fe7bf7b | 129 | /* Whether a threaded application is being debugged. */ |
c11d79f2 KB |
130 | |
131 | static int pd_active = 0; | |
132 | ||
0fe7bf7b MS |
133 | /* Whether the current architecture is 64-bit. |
134 | Only valid when pd_able is true. */ | |
c11d79f2 KB |
135 | |
136 | static int arch64; | |
137 | ||
0fe7bf7b | 138 | /* Saved pointer to previous owner of target_new_objfile_hook. */ |
c11d79f2 KB |
139 | |
140 | static void (*target_new_objfile_chain)(struct objfile *); | |
141 | ||
0fe7bf7b | 142 | /* Forward declarations for pthdb callbacks. */ |
c11d79f2 KB |
143 | |
144 | static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int); | |
145 | static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t); | |
146 | static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t); | |
147 | static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid, | |
0fe7bf7b MS |
148 | unsigned long long flags, |
149 | pthdb_context_t *context); | |
c11d79f2 | 150 | static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid, |
0fe7bf7b MS |
151 | unsigned long long flags, |
152 | pthdb_context_t *context); | |
c11d79f2 KB |
153 | static int pdc_alloc (pthdb_user_t, size_t, void **); |
154 | static int pdc_realloc (pthdb_user_t, void *, size_t, void **); | |
155 | static int pdc_dealloc (pthdb_user_t, void *); | |
156 | ||
0fe7bf7b | 157 | /* pthdb callbacks. */ |
c11d79f2 KB |
158 | |
159 | static pthdb_callbacks_t pd_callbacks = { | |
160 | pdc_symbol_addrs, | |
161 | pdc_read_data, | |
162 | pdc_write_data, | |
163 | pdc_read_regs, | |
164 | pdc_write_regs, | |
165 | pdc_alloc, | |
166 | pdc_realloc, | |
167 | pdc_dealloc, | |
168 | NULL | |
169 | }; | |
170 | ||
0fe7bf7b | 171 | /* Current pthdb session. */ |
c11d79f2 KB |
172 | |
173 | static pthdb_session_t pd_session; | |
174 | ||
0fe7bf7b MS |
175 | /* Return a printable representation of pthdebug function return |
176 | STATUS. */ | |
c11d79f2 KB |
177 | |
178 | static char * | |
179 | pd_status2str (int status) | |
180 | { | |
181 | switch (status) | |
182 | { | |
183 | case PTHDB_SUCCESS: return "SUCCESS"; | |
184 | case PTHDB_NOSYS: return "NOSYS"; | |
185 | case PTHDB_NOTSUP: return "NOTSUP"; | |
186 | case PTHDB_BAD_VERSION: return "BAD_VERSION"; | |
187 | case PTHDB_BAD_USER: return "BAD_USER"; | |
188 | case PTHDB_BAD_SESSION: return "BAD_SESSION"; | |
189 | case PTHDB_BAD_MODE: return "BAD_MODE"; | |
190 | case PTHDB_BAD_FLAGS: return "BAD_FLAGS"; | |
191 | case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK"; | |
192 | case PTHDB_BAD_POINTER: return "BAD_POINTER"; | |
193 | case PTHDB_BAD_CMD: return "BAD_CMD"; | |
194 | case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD"; | |
195 | case PTHDB_BAD_ATTR: return "BAD_ATTR"; | |
196 | case PTHDB_BAD_MUTEX: return "BAD_MUTEX"; | |
197 | case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR"; | |
198 | case PTHDB_BAD_COND: return "BAD_COND"; | |
199 | case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR"; | |
200 | case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK"; | |
201 | case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR"; | |
202 | case PTHDB_BAD_KEY: return "BAD_KEY"; | |
203 | case PTHDB_BAD_PTID: return "BAD_PTID"; | |
204 | case PTHDB_BAD_TID: return "BAD_TID"; | |
205 | case PTHDB_CALLBACK: return "CALLBACK"; | |
206 | case PTHDB_CONTEXT: return "CONTEXT"; | |
207 | case PTHDB_HELD: return "HELD"; | |
208 | case PTHDB_NOT_HELD: return "NOT_HELD"; | |
209 | case PTHDB_MEMORY: return "MEMORY"; | |
210 | case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED"; | |
211 | case PTHDB_SYMBOL: return "SYMBOL"; | |
212 | case PTHDB_NOT_AVAIL: return "NOT_AVAIL"; | |
213 | case PTHDB_INTERNAL: return "INTERNAL"; | |
214 | default: return "UNKNOWN"; | |
215 | } | |
216 | } | |
217 | ||
0fe7bf7b MS |
218 | /* A call to ptrace(REQ, ID, ...) just returned RET. Check for |
219 | exceptional conditions and either return nonlocally or else return | |
220 | 1 for success and 0 for failure. */ | |
c11d79f2 KB |
221 | |
222 | static int | |
223 | ptrace_check (int req, int id, int ret) | |
224 | { | |
225 | if (ret == 0 && !errno) | |
226 | return 1; | |
227 | ||
0fe7bf7b MS |
228 | /* According to ptrace(2), ptrace may fail with EPERM if "the |
229 | Identifier parameter corresponds to a kernel thread which is | |
230 | stopped in kernel mode and whose computational state cannot be | |
231 | read or written." This happens quite often with register reads. */ | |
c11d79f2 KB |
232 | |
233 | switch (req) | |
234 | { | |
235 | case PTT_READ_GPRS: | |
236 | case PTT_READ_FPRS: | |
237 | case PTT_READ_SPRS: | |
238 | if (ret == -1 && errno == EPERM) | |
42cc437f KB |
239 | { |
240 | if (debug_aix_thread) | |
0fe7bf7b MS |
241 | fprintf_unfiltered (gdb_stdlog, |
242 | "ptrace (%d, %d) = %d (errno = %d)", | |
42cc437f KB |
243 | req, id, ret, errno); |
244 | return ret == -1 ? 0 : 1; | |
245 | } | |
c11d79f2 KB |
246 | break; |
247 | } | |
248 | error ("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)", | |
be006b8b | 249 | req, id, ret, errno, safe_strerror (errno)); |
0fe7bf7b | 250 | return 0; /* Not reached. */ |
c11d79f2 KB |
251 | } |
252 | ||
0fe7bf7b | 253 | /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */ |
c11d79f2 KB |
254 | |
255 | static int | |
256 | ptrace64aix (int req, int id, long long addr, int data, int *buf) | |
257 | { | |
258 | errno = 0; | |
259 | return ptrace_check (req, id, ptracex (req, id, addr, data, buf)); | |
260 | } | |
261 | ||
0fe7bf7b | 262 | /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */ |
c11d79f2 KB |
263 | |
264 | static int | |
265 | ptrace32 (int req, int id, int *addr, int data, int *buf) | |
266 | { | |
267 | errno = 0; | |
0fe7bf7b MS |
268 | return ptrace_check (req, id, |
269 | ptrace (req, id, (int *)addr, data, buf)); | |
c11d79f2 KB |
270 | } |
271 | ||
0fe7bf7b MS |
272 | /* If *PIDP is a composite process/thread id, convert it to a |
273 | process id. */ | |
c11d79f2 KB |
274 | |
275 | static void | |
276 | pid_to_prc (ptid_t *ptidp) | |
277 | { | |
278 | ptid_t ptid; | |
279 | ||
280 | ptid = *ptidp; | |
281 | if (PD_TID (ptid)) | |
282 | *ptidp = pid_to_ptid (PIDGET (ptid)); | |
283 | } | |
284 | ||
0fe7bf7b MS |
285 | /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to |
286 | the address of SYMBOLS[<i>].name. */ | |
c11d79f2 KB |
287 | |
288 | static int | |
289 | pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count) | |
290 | { | |
291 | struct minimal_symbol *ms; | |
292 | int i; | |
293 | char *name; | |
294 | ||
8e2c28d4 KB |
295 | if (debug_aix_thread) |
296 | fprintf_unfiltered (gdb_stdlog, | |
297 | "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)", | |
298 | user, (long) symbols, count); | |
c11d79f2 KB |
299 | |
300 | for (i = 0; i < count; i++) | |
301 | { | |
302 | name = symbols[i].name; | |
8e2c28d4 | 303 | if (debug_aix_thread) |
0fe7bf7b MS |
304 | fprintf_unfiltered (gdb_stdlog, |
305 | " symbols[%d].name = \"%s\"", i, name); | |
c11d79f2 KB |
306 | |
307 | if (!*name) | |
308 | symbols[i].addr = 0; | |
309 | else | |
310 | { | |
311 | if (!(ms = lookup_minimal_symbol (name, NULL, NULL))) | |
312 | { | |
8e2c28d4 KB |
313 | if (debug_aix_thread) |
314 | fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE"); | |
c11d79f2 KB |
315 | return PDC_FAILURE; |
316 | } | |
317 | symbols[i].addr = SYMBOL_VALUE_ADDRESS (ms); | |
318 | } | |
8e2c28d4 KB |
319 | if (debug_aix_thread) |
320 | fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = 0x%llx", | |
321 | i, symbols[i].addr); | |
c11d79f2 | 322 | } |
8e2c28d4 KB |
323 | if (debug_aix_thread) |
324 | fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS"); | |
c11d79f2 KB |
325 | return PDC_SUCCESS; |
326 | } | |
327 | ||
0fe7bf7b MS |
328 | /* Read registers call back function should be able to read the |
329 | context information of a debuggee kernel thread from an active | |
330 | process or from a core file. The information should be formatted | |
331 | in context64 form for both 32-bit and 64-bit process. | |
332 | If successful return 0, else non-zero is returned. */ | |
333 | ||
c11d79f2 KB |
334 | static int |
335 | pdc_read_regs (pthdb_user_t user, | |
336 | pthdb_tid_t tid, | |
337 | unsigned long long flags, | |
338 | pthdb_context_t *context) | |
339 | { | |
0fe7bf7b MS |
340 | /* This function doesn't appear to be used, so we could probably |
341 | just return 0 here. HOWEVER, if it is not defined, the OS will | |
342 | complain and several thread debug functions will fail. In case | |
343 | this is needed, I have implemented what I think it should do, | |
344 | however this code is untested. */ | |
345 | ||
c11d79f2 KB |
346 | uint64_t gprs64[32]; |
347 | uint32_t gprs32[32]; | |
348 | double fprs[32]; | |
349 | struct ptxsprs sprs64; | |
350 | struct ptsprs sprs32; | |
351 | ||
8e2c28d4 KB |
352 | if (debug_aix_thread) |
353 | fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%llx\n", | |
354 | (int)tid, flags); | |
c11d79f2 | 355 | |
0fe7bf7b | 356 | /* General-purpose registers. */ |
c11d79f2 KB |
357 | if (flags & PTHDB_FLAG_GPRS) |
358 | { | |
359 | if (arch64) | |
360 | { | |
0fe7bf7b MS |
361 | if (!ptrace64aix (PTT_READ_GPRS, tid, |
362 | (unsigned long) gprs64, 0, NULL)) | |
c11d79f2 KB |
363 | memset (gprs64, 0, sizeof (gprs64)); |
364 | memcpy (context->gpr, gprs64, sizeof(gprs64)); | |
365 | } | |
366 | else | |
367 | { | |
368 | if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL)) | |
369 | memset (gprs32, 0, sizeof (gprs32)); | |
370 | memcpy (context->gpr, gprs32, sizeof(gprs32)); | |
371 | } | |
372 | } | |
373 | ||
0fe7bf7b | 374 | /* Floating-point registers. */ |
c11d79f2 KB |
375 | if (flags & PTHDB_FLAG_FPRS) |
376 | { | |
377 | if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL)) | |
378 | memset (fprs, 0, sizeof (fprs)); | |
379 | memcpy (context->fpr, fprs, sizeof(fprs)); | |
380 | } | |
381 | ||
0fe7bf7b | 382 | /* Special-purpose registers. */ |
c11d79f2 KB |
383 | if (flags & PTHDB_FLAG_SPRS) |
384 | { | |
385 | if (arch64) | |
386 | { | |
0fe7bf7b MS |
387 | if (!ptrace64aix (PTT_READ_SPRS, tid, |
388 | (unsigned long) &sprs64, 0, NULL)) | |
c11d79f2 KB |
389 | memset (&sprs64, 0, sizeof (sprs64)); |
390 | memcpy (&context->msr, &sprs64, sizeof(sprs64)); | |
391 | } | |
392 | else | |
393 | { | |
394 | if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL)) | |
395 | memset (&sprs32, 0, sizeof (sprs32)); | |
396 | memcpy (&context->msr, &sprs32, sizeof(sprs32)); | |
397 | } | |
398 | } | |
399 | return 0; | |
400 | } | |
401 | ||
0fe7bf7b MS |
402 | /* Write register function should be able to write requested context |
403 | information to specified debuggee's kernel thread id. | |
404 | If successful return 0, else non-zero is returned. */ | |
405 | ||
c11d79f2 KB |
406 | static int |
407 | pdc_write_regs (pthdb_user_t user, | |
408 | pthdb_tid_t tid, | |
409 | unsigned long long flags, | |
410 | pthdb_context_t *context) | |
411 | { | |
0fe7bf7b MS |
412 | /* This function doesn't appear to be used, so we could probably |
413 | just return 0 here. HOWEVER, if it is not defined, the OS will | |
414 | complain and several thread debug functions will fail. In case | |
415 | this is needed, I have implemented what I think it should do, | |
416 | however this code is untested. */ | |
c11d79f2 | 417 | |
8e2c28d4 KB |
418 | if (debug_aix_thread) |
419 | fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%llx\n", | |
420 | (int)tid, flags); | |
c11d79f2 | 421 | |
0fe7bf7b | 422 | /* General-purpose registers. */ |
c11d79f2 KB |
423 | if (flags & PTHDB_FLAG_GPRS) |
424 | { | |
425 | if (arch64) | |
0fe7bf7b MS |
426 | ptrace64aix (PTT_WRITE_GPRS, tid, |
427 | (unsigned long)context->gpr, 0, NULL); | |
c11d79f2 KB |
428 | else |
429 | ptrace32 (PTT_WRITE_GPRS, tid, (int *)context->gpr, 0, NULL); | |
430 | } | |
431 | ||
0fe7bf7b | 432 | /* Floating-point registers. */ |
c11d79f2 KB |
433 | if (flags & PTHDB_FLAG_FPRS) |
434 | { | |
435 | ptrace32 (PTT_WRITE_FPRS, tid, (int *)context->fpr, 0, NULL); | |
436 | } | |
437 | ||
0fe7bf7b | 438 | /* Special-purpose registers. */ |
c11d79f2 KB |
439 | if (flags & PTHDB_FLAG_SPRS) |
440 | { | |
441 | if (arch64) | |
442 | { | |
0fe7bf7b MS |
443 | ptrace64aix (PTT_WRITE_SPRS, tid, |
444 | (unsigned long) &context->msr, 0, NULL); | |
c11d79f2 KB |
445 | } |
446 | else | |
447 | { | |
448 | ptrace32 (PTT_WRITE_SPRS, tid, (int *)&context->msr, 0, NULL); | |
449 | } | |
450 | } | |
451 | return 0; | |
452 | } | |
453 | ||
0fe7bf7b | 454 | /* pthdb callback: read LEN bytes from process ADDR into BUF. */ |
c11d79f2 KB |
455 | |
456 | static int | |
0fe7bf7b MS |
457 | pdc_read_data (pthdb_user_t user, void *buf, |
458 | pthdb_addr_t addr, size_t len) | |
c11d79f2 KB |
459 | { |
460 | int status, ret; | |
461 | ||
8e2c28d4 KB |
462 | if (debug_aix_thread) |
463 | fprintf_unfiltered (gdb_stdlog, | |
464 | "pdc_read_data (user = %ld, buf = 0x%lx, addr = 0x%llx, len = %ld)", | |
465 | user, (long) buf, addr, len); | |
c11d79f2 KB |
466 | |
467 | status = target_read_memory (addr, buf, len); | |
468 | ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE; | |
469 | ||
8e2c28d4 | 470 | if (debug_aix_thread) |
0fe7bf7b MS |
471 | fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s", |
472 | status, pd_status2str (ret)); | |
c11d79f2 KB |
473 | return ret; |
474 | } | |
475 | ||
0fe7bf7b | 476 | /* pthdb callback: write LEN bytes from BUF to process ADDR. */ |
c11d79f2 KB |
477 | |
478 | static int | |
0fe7bf7b MS |
479 | pdc_write_data (pthdb_user_t user, void *buf, |
480 | pthdb_addr_t addr, size_t len) | |
c11d79f2 KB |
481 | { |
482 | int status, ret; | |
483 | ||
8e2c28d4 KB |
484 | if (debug_aix_thread) |
485 | fprintf_unfiltered (gdb_stdlog, | |
486 | "pdc_write_data (user = %ld, buf = 0x%lx, addr = 0x%llx, len = %ld)", | |
487 | user, (long) buf, addr, len); | |
c11d79f2 KB |
488 | |
489 | status = target_write_memory (addr, buf, len); | |
490 | ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE; | |
491 | ||
8e2c28d4 KB |
492 | if (debug_aix_thread) |
493 | fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s", status, | |
494 | pd_status2str (ret)); | |
c11d79f2 KB |
495 | return ret; |
496 | } | |
497 | ||
0fe7bf7b MS |
498 | /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it |
499 | in BUFP. */ | |
c11d79f2 KB |
500 | |
501 | static int | |
502 | pdc_alloc (pthdb_user_t user, size_t len, void **bufp) | |
503 | { | |
8e2c28d4 KB |
504 | if (debug_aix_thread) |
505 | fprintf_unfiltered (gdb_stdlog, | |
506 | "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)", | |
507 | user, len, (long) bufp); | |
c11d79f2 | 508 | *bufp = xmalloc (len); |
8e2c28d4 | 509 | if (debug_aix_thread) |
0fe7bf7b MS |
510 | fprintf_unfiltered (gdb_stdlog, |
511 | " malloc returned 0x%lx", (long) *bufp); | |
512 | ||
513 | /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never | |
514 | be returned. */ | |
515 | ||
c11d79f2 KB |
516 | return *bufp ? PDC_SUCCESS : PDC_FAILURE; |
517 | } | |
518 | ||
0fe7bf7b MS |
519 | /* pthdb callback: reallocate BUF, which was allocated by the alloc or |
520 | realloc callback, so that it contains LEN bytes, and store a | |
521 | pointer to the result in BUFP. */ | |
c11d79f2 KB |
522 | |
523 | static int | |
524 | pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp) | |
525 | { | |
8e2c28d4 KB |
526 | if (debug_aix_thread) |
527 | fprintf_unfiltered (gdb_stdlog, | |
528 | "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)", | |
529 | user, (long) buf, len, (long) bufp); | |
be006b8b | 530 | *bufp = xrealloc (buf, len); |
8e2c28d4 | 531 | if (debug_aix_thread) |
0fe7bf7b MS |
532 | fprintf_unfiltered (gdb_stdlog, |
533 | " realloc returned 0x%lx", (long) *bufp); | |
c11d79f2 KB |
534 | return *bufp ? PDC_SUCCESS : PDC_FAILURE; |
535 | } | |
536 | ||
0fe7bf7b MS |
537 | /* pthdb callback: free BUF, which was allocated by the alloc or |
538 | realloc callback. */ | |
c11d79f2 KB |
539 | |
540 | static int | |
541 | pdc_dealloc (pthdb_user_t user, void *buf) | |
542 | { | |
8e2c28d4 | 543 | if (debug_aix_thread) |
0fe7bf7b MS |
544 | fprintf_unfiltered (gdb_stdlog, |
545 | "pdc_free (user = %ld, buf = 0x%lx)", user, | |
8e2c28d4 | 546 | (long) buf); |
c11d79f2 KB |
547 | xfree (buf); |
548 | return PDC_SUCCESS; | |
549 | } | |
550 | ||
0fe7bf7b | 551 | /* Return a printable representation of pthread STATE. */ |
c11d79f2 KB |
552 | |
553 | static char * | |
554 | state2str (pthdb_state_t state) | |
555 | { | |
556 | switch (state) | |
557 | { | |
558 | case PST_IDLE: return "idle"; /* being created */ | |
559 | case PST_RUN: return "running"; /* running */ | |
560 | case PST_SLEEP: return "sleeping"; /* awaiting an event */ | |
561 | case PST_READY: return "ready"; /* runnable */ | |
562 | case PST_TERM: return "finished"; /* awaiting a join/detach */ | |
563 | default: return "unknown"; | |
564 | } | |
565 | } | |
566 | ||
0fe7bf7b | 567 | /* qsort() comparison function for sorting pd_thread structs by pthid. */ |
c11d79f2 KB |
568 | |
569 | static int | |
570 | pcmp (const void *p1v, const void *p2v) | |
571 | { | |
572 | struct pd_thread *p1 = (struct pd_thread *) p1v; | |
573 | struct pd_thread *p2 = (struct pd_thread *) p2v; | |
574 | return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid; | |
575 | } | |
576 | ||
0fe7bf7b | 577 | /* iterate_over_threads() callback for counting GDB threads. */ |
c11d79f2 KB |
578 | |
579 | static int | |
580 | giter_count (struct thread_info *thread, void *countp) | |
581 | { | |
582 | (*(int *) countp)++; | |
583 | return 0; | |
584 | } | |
585 | ||
0fe7bf7b | 586 | /* iterate_over_threads() callback for accumulating GDB thread pids. */ |
c11d79f2 KB |
587 | |
588 | static int | |
589 | giter_accum (struct thread_info *thread, void *bufp) | |
590 | { | |
591 | **(struct thread_info ***) bufp = thread; | |
592 | (*(struct thread_info ***) bufp)++; | |
593 | return 0; | |
594 | } | |
595 | ||
596 | /* ptid comparison function */ | |
0fe7bf7b | 597 | |
c11d79f2 KB |
598 | static int |
599 | ptid_cmp (ptid_t ptid1, ptid_t ptid2) | |
600 | { | |
601 | int pid1, pid2; | |
602 | ||
603 | if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2)) | |
604 | return -1; | |
605 | else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2)) | |
606 | return 1; | |
607 | else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2)) | |
608 | return -1; | |
609 | else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2)) | |
610 | return 1; | |
611 | else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2)) | |
612 | return -1; | |
613 | else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2)) | |
614 | return 1; | |
615 | else | |
616 | return 0; | |
617 | } | |
618 | ||
0fe7bf7b | 619 | /* qsort() comparison function for sorting thread_info structs by pid. */ |
c11d79f2 KB |
620 | |
621 | static int | |
622 | gcmp (const void *t1v, const void *t2v) | |
623 | { | |
624 | struct thread_info *t1 = *(struct thread_info **) t1v; | |
625 | struct thread_info *t2 = *(struct thread_info **) t2v; | |
626 | return ptid_cmp (t1->ptid, t2->ptid); | |
627 | } | |
628 | ||
629 | /* Synchronize GDB's thread list with libpthdebug's. | |
630 | ||
631 | There are some benefits of doing this every time the inferior stops: | |
632 | ||
0fe7bf7b MS |
633 | - allows users to run thread-specific commands without needing to |
634 | run "info threads" first | |
c11d79f2 KB |
635 | |
636 | - helps pthdb_tid_pthread() work properly (see "libpthdebug | |
637 | peculiarities" at the top of this module) | |
638 | ||
0fe7bf7b MS |
639 | - simplifies the demands placed on libpthdebug, which seems to |
640 | have difficulty with certain call patterns */ | |
c11d79f2 KB |
641 | |
642 | static void | |
643 | sync_threadlists (void) | |
644 | { | |
645 | int cmd, status, infpid; | |
646 | int pcount, psize, pi, gcount, gi; | |
647 | struct pd_thread *pbuf; | |
648 | struct thread_info **gbuf, **g, *thread; | |
649 | pthdb_pthread_t pdtid; | |
650 | pthread_t pthid; | |
651 | pthdb_tid_t tid; | |
c11d79f2 | 652 | |
0fe7bf7b | 653 | /* Accumulate an array of libpthdebug threads sorted by pthread id. */ |
c11d79f2 KB |
654 | |
655 | pcount = 0; | |
656 | psize = 1; | |
657 | pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf); | |
658 | ||
659 | for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT) | |
660 | { | |
661 | status = pthdb_pthread (pd_session, &pdtid, cmd); | |
662 | if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD) | |
663 | break; | |
664 | ||
665 | status = pthdb_pthread_ptid (pd_session, pdtid, &pthid); | |
666 | if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID) | |
667 | continue; | |
668 | ||
669 | if (pcount == psize) | |
670 | { | |
671 | psize *= 2; | |
0fe7bf7b MS |
672 | pbuf = (struct pd_thread *) xrealloc (pbuf, |
673 | psize * sizeof *pbuf); | |
c11d79f2 KB |
674 | } |
675 | pbuf[pcount].pdtid = pdtid; | |
676 | pbuf[pcount].pthid = pthid; | |
677 | pcount++; | |
678 | } | |
679 | ||
680 | for (pi = 0; pi < pcount; pi++) | |
681 | { | |
682 | status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid); | |
683 | if (status != PTHDB_SUCCESS) | |
684 | tid = PTHDB_INVALID_TID; | |
685 | pbuf[pi].tid = tid; | |
686 | } | |
687 | ||
688 | qsort (pbuf, pcount, sizeof *pbuf, pcmp); | |
689 | ||
0fe7bf7b | 690 | /* Accumulate an array of GDB threads sorted by pid. */ |
c11d79f2 KB |
691 | |
692 | gcount = 0; | |
693 | iterate_over_threads (giter_count, &gcount); | |
694 | g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf); | |
695 | iterate_over_threads (giter_accum, &g); | |
696 | qsort (gbuf, gcount, sizeof *gbuf, gcmp); | |
697 | ||
0fe7bf7b | 698 | /* Apply differences between the two arrays to GDB's thread list. */ |
c11d79f2 KB |
699 | |
700 | infpid = PIDGET (inferior_ptid); | |
701 | for (pi = gi = 0; pi < pcount || gi < gcount;) | |
702 | { | |
c11d79f2 | 703 | if (pi == pcount) |
c11d79f2 | 704 | { |
42cc437f | 705 | delete_thread (gbuf[gi]->ptid); |
c11d79f2 KB |
706 | gi++; |
707 | } | |
42cc437f | 708 | else if (gi == gcount) |
c11d79f2 | 709 | { |
42cc437f | 710 | thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid)); |
c11d79f2 | 711 | thread->private = xmalloc (sizeof (struct private_thread_info)); |
42cc437f KB |
712 | thread->private->pdtid = pbuf[pi].pdtid; |
713 | thread->private->tid = pbuf[pi].tid; | |
c11d79f2 KB |
714 | pi++; |
715 | } | |
42cc437f KB |
716 | else |
717 | { | |
718 | ptid_t pptid, gptid; | |
719 | int cmp_result; | |
720 | ||
721 | pptid = BUILD_THREAD (pbuf[pi].pthid, infpid); | |
722 | gptid = gbuf[gi]->ptid; | |
723 | pdtid = pbuf[pi].pdtid; | |
724 | tid = pbuf[pi].tid; | |
c11d79f2 | 725 | |
42cc437f KB |
726 | cmp_result = ptid_cmp (pptid, gptid); |
727 | ||
728 | if (cmp_result == 0) | |
729 | { | |
730 | gbuf[gi]->private->pdtid = pdtid; | |
731 | gbuf[gi]->private->tid = tid; | |
732 | pi++; | |
733 | gi++; | |
734 | } | |
735 | else if (cmp_result > 0) | |
736 | { | |
737 | delete_thread (gptid); | |
738 | gi++; | |
739 | } | |
740 | else | |
741 | { | |
742 | thread = add_thread (pptid); | |
743 | thread->private = xmalloc (sizeof (struct private_thread_info)); | |
744 | thread->private->pdtid = pdtid; | |
745 | thread->private->tid = tid; | |
746 | pi++; | |
747 | } | |
748 | } | |
c11d79f2 KB |
749 | } |
750 | ||
751 | xfree (pbuf); | |
752 | xfree (gbuf); | |
753 | } | |
754 | ||
0fe7bf7b MS |
755 | /* Iterate_over_threads() callback for locating a thread whose kernel |
756 | thread just received a trap signal. */ | |
c11d79f2 KB |
757 | |
758 | static int | |
759 | iter_trap (struct thread_info *thread, void *unused) | |
760 | { | |
761 | struct thrdsinfo64 thrinf; | |
762 | pthdb_tid_t tid; | |
763 | ||
0fe7bf7b MS |
764 | /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */ |
765 | extern int getthrds (pid_t, struct thrdsinfo64 *, | |
766 | int, pthdb_tid_t *, int); | |
c11d79f2 KB |
767 | |
768 | tid = thread->private->tid; | |
769 | if (tid == PTHDB_INVALID_TID) | |
770 | return 0; | |
771 | ||
0fe7bf7b MS |
772 | if (getthrds (PIDGET (inferior_ptid), &thrinf, |
773 | sizeof (thrinf), &tid, 1) != 1) | |
c11d79f2 KB |
774 | return 0; |
775 | ||
776 | return thrinf.ti_cursig == SIGTRAP; | |
777 | } | |
778 | ||
0fe7bf7b MS |
779 | /* Synchronize libpthdebug's state with the inferior and with GDB, |
780 | generate a composite process/thread <pid> for the current thread, | |
781 | set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */ | |
c11d79f2 KB |
782 | |
783 | static ptid_t | |
784 | pd_update (int set_infpid) | |
785 | { | |
786 | int status; | |
787 | ptid_t ptid; | |
788 | struct thread_info *thread; | |
789 | ||
790 | if (!pd_active) | |
791 | return inferior_ptid; | |
792 | ||
793 | status = pthdb_session_update (pd_session); | |
794 | if (status != PTHDB_SUCCESS) | |
795 | return inferior_ptid; | |
796 | ||
797 | sync_threadlists (); | |
798 | ||
0fe7bf7b | 799 | /* Define "current thread" as one that just received a trap signal. */ |
c11d79f2 KB |
800 | |
801 | thread = iterate_over_threads (iter_trap, NULL); | |
802 | if (!thread) | |
803 | ptid = inferior_ptid; | |
804 | else | |
805 | { | |
806 | ptid = thread->ptid; | |
807 | if (set_infpid) | |
808 | inferior_ptid = ptid; | |
809 | } | |
810 | return ptid; | |
811 | } | |
812 | ||
0fe7bf7b MS |
813 | /* Try to start debugging threads in the current process. |
814 | If successful and SET_INFPID, set inferior_ptid to reflect the | |
815 | current thread. */ | |
c11d79f2 KB |
816 | |
817 | static ptid_t | |
818 | pd_activate (int set_infpid) | |
819 | { | |
820 | int status; | |
821 | ||
822 | status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT, | |
0fe7bf7b MS |
823 | PTHDB_FLAG_REGS, &pd_callbacks, |
824 | &pd_session); | |
c11d79f2 KB |
825 | if (status != PTHDB_SUCCESS) |
826 | { | |
827 | return inferior_ptid; | |
828 | } | |
829 | pd_active = 1; | |
830 | return pd_update (set_infpid); | |
831 | } | |
832 | ||
0fe7bf7b | 833 | /* Undo the effects of pd_activate(). */ |
c11d79f2 KB |
834 | |
835 | static void | |
836 | pd_deactivate (void) | |
837 | { | |
838 | if (!pd_active) | |
839 | return; | |
840 | pthdb_session_destroy (pd_session); | |
841 | ||
842 | pid_to_prc (&inferior_ptid); | |
843 | pd_active = 0; | |
844 | } | |
845 | ||
0fe7bf7b MS |
846 | /* An object file has just been loaded. Check whether the current |
847 | application is pthreaded, and if so, prepare for thread debugging. */ | |
c11d79f2 KB |
848 | |
849 | static void | |
850 | pd_enable (void) | |
851 | { | |
852 | int status; | |
853 | char *stub_name; | |
854 | struct minimal_symbol *ms; | |
855 | ||
0fe7bf7b | 856 | /* Don't initialize twice. */ |
c11d79f2 KB |
857 | if (pd_able) |
858 | return; | |
859 | ||
0fe7bf7b | 860 | /* Check application word size. */ |
c11d79f2 KB |
861 | arch64 = REGISTER_RAW_SIZE (0) == 8; |
862 | ||
0fe7bf7b | 863 | /* Check whether the application is pthreaded. */ |
c11d79f2 | 864 | stub_name = NULL; |
0fe7bf7b MS |
865 | status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS, |
866 | &pd_callbacks, &stub_name); | |
867 | if ((status != PTHDB_SUCCESS && | |
868 | status != PTHDB_NOT_PTHREADED) || !stub_name) | |
c11d79f2 KB |
869 | return; |
870 | ||
0fe7bf7b | 871 | /* Set a breakpoint on the returned stub function. */ |
c11d79f2 KB |
872 | if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL))) |
873 | return; | |
874 | pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms); | |
875 | if (!create_thread_event_breakpoint (pd_brk_addr)) | |
876 | return; | |
877 | ||
0fe7bf7b | 878 | /* Prepare for thread debugging. */ |
c11d79f2 KB |
879 | base_ops = current_target; |
880 | push_target (&ops); | |
881 | pd_able = 1; | |
882 | ||
0fe7bf7b MS |
883 | /* If we're debugging a core file or an attached inferior, the |
884 | pthread library may already have been initialized, so try to | |
885 | activate thread debugging. */ | |
c11d79f2 KB |
886 | pd_activate (1); |
887 | } | |
888 | ||
0fe7bf7b | 889 | /* Undo the effects of pd_enable(). */ |
c11d79f2 KB |
890 | |
891 | static void | |
892 | pd_disable (void) | |
893 | { | |
894 | if (!pd_able) | |
895 | return; | |
896 | if (pd_active) | |
897 | pd_deactivate (); | |
898 | pd_able = 0; | |
899 | unpush_target (&ops); | |
900 | } | |
901 | ||
902 | /* target_new_objfile_hook callback. | |
903 | ||
0fe7bf7b MS |
904 | If OBJFILE is non-null, check whether a threaded application is |
905 | being debugged, and if so, prepare for thread debugging. | |
c11d79f2 | 906 | |
0fe7bf7b | 907 | If OBJFILE is null, stop debugging threads. */ |
c11d79f2 KB |
908 | |
909 | static void | |
910 | new_objfile (struct objfile *objfile) | |
911 | { | |
912 | if (objfile) | |
913 | pd_enable (); | |
914 | else | |
915 | pd_disable (); | |
916 | ||
917 | if (target_new_objfile_chain) | |
918 | target_new_objfile_chain (objfile); | |
919 | } | |
920 | ||
0fe7bf7b | 921 | /* Attach to process specified by ARGS. */ |
c11d79f2 KB |
922 | |
923 | static void | |
924 | ops_attach (char *args, int from_tty) | |
925 | { | |
926 | base_ops.to_attach (args, from_tty); | |
927 | pd_activate (1); | |
928 | } | |
929 | ||
0fe7bf7b | 930 | /* Detach from the process attached to by ops_attach(). */ |
c11d79f2 KB |
931 | |
932 | static void | |
933 | ops_detach (char *args, int from_tty) | |
934 | { | |
935 | pd_deactivate (); | |
936 | base_ops.to_detach (args, from_tty); | |
937 | } | |
938 | ||
939 | /* Tell the inferior process to continue running thread PID if != -1 | |
0fe7bf7b | 940 | and all threads otherwise. */ |
c11d79f2 KB |
941 | |
942 | static void | |
943 | ops_resume (ptid_t ptid, int step, enum target_signal sig) | |
944 | { | |
945 | struct thread_info *thread; | |
946 | pthdb_tid_t tid[2]; | |
947 | ||
948 | if (!PD_TID (ptid)) | |
14fa3751 KB |
949 | { |
950 | struct cleanup *cleanup = save_inferior_ptid (); | |
951 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
952 | base_ops.to_resume (ptid, step, sig); | |
953 | do_cleanups (cleanup); | |
954 | } | |
c11d79f2 KB |
955 | else |
956 | { | |
957 | thread = find_thread_pid (ptid); | |
958 | if (!thread) | |
0fe7bf7b MS |
959 | error ("aix-thread resume: unknown pthread %ld", |
960 | TIDGET (ptid)); | |
c11d79f2 KB |
961 | |
962 | tid[0] = thread->private->tid; | |
963 | if (tid[0] == PTHDB_INVALID_TID) | |
0fe7bf7b MS |
964 | error ("aix-thread resume: no tid for pthread %ld", |
965 | TIDGET (ptid)); | |
c11d79f2 KB |
966 | tid[1] = 0; |
967 | ||
968 | if (arch64) | |
0fe7bf7b MS |
969 | ptrace64aix (PTT_CONTINUE, tid[0], 1, |
970 | target_signal_to_host (sig), (int *)tid); | |
c11d79f2 KB |
971 | else |
972 | ptrace32 (PTT_CONTINUE, tid[0], (int *) 1, | |
973 | target_signal_to_host (sig), (int *)tid); | |
974 | } | |
975 | } | |
976 | ||
0fe7bf7b MS |
977 | /* Wait for thread/process ID if != -1 or for any thread otherwise. |
978 | If an error occurs, return -1, else return the pid of the stopped | |
979 | thread. */ | |
c11d79f2 KB |
980 | |
981 | static ptid_t | |
982 | ops_wait (ptid_t ptid, struct target_waitstatus *status) | |
983 | { | |
14fa3751 KB |
984 | struct cleanup *cleanup = save_inferior_ptid (); |
985 | ||
c11d79f2 | 986 | pid_to_prc (&ptid); |
14fa3751 KB |
987 | |
988 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
989 | ptid = base_ops.to_wait (ptid, status); | |
990 | do_cleanups (cleanup); | |
991 | ||
c11d79f2 KB |
992 | if (PIDGET (ptid) == -1) |
993 | return pid_to_ptid (-1); | |
994 | ||
0fe7bf7b | 995 | /* Check whether libpthdebug might be ready to be initialized. */ |
c11d79f2 KB |
996 | if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED && |
997 | status->value.sig == TARGET_SIGNAL_TRAP && | |
998 | read_pc_pid (ptid) - DECR_PC_AFTER_BREAK == pd_brk_addr) | |
999 | return pd_activate (0); | |
1000 | ||
1001 | return pd_update (0); | |
1002 | } | |
1003 | ||
0fe7bf7b | 1004 | /* Record that the 64-bit general-purpose registers contain VALS. */ |
c11d79f2 KB |
1005 | |
1006 | static void | |
1007 | supply_gprs64 (uint64_t *vals) | |
1008 | { | |
1009 | int regno; | |
1010 | ||
1011 | for (regno = 0; regno < 32; regno++) | |
1012 | supply_register (regno, (char *) (vals + regno)); | |
1013 | } | |
1014 | ||
0fe7bf7b | 1015 | /* Record that 32-bit register REGNO contains VAL. */ |
c11d79f2 KB |
1016 | |
1017 | static void | |
1018 | supply_reg32 (int regno, uint32_t val) | |
1019 | { | |
1020 | supply_register (regno, (char *) &val); | |
1021 | } | |
1022 | ||
0fe7bf7b | 1023 | /* Record that the floating-point registers contain VALS. */ |
c11d79f2 KB |
1024 | |
1025 | static void | |
1026 | supply_fprs (double *vals) | |
1027 | { | |
1028 | int regno; | |
1029 | ||
1030 | for (regno = 0; regno < 32; regno++) | |
1031 | supply_register (regno + FP0_REGNUM, (char *) (vals + regno)); | |
1032 | } | |
1033 | ||
0fe7bf7b MS |
1034 | /* Record that the special registers contain the specified 64-bit and |
1035 | 32-bit values. */ | |
c11d79f2 KB |
1036 | |
1037 | static void | |
1038 | supply_sprs64 (uint64_t iar, uint64_t msr, uint32_t cr, | |
1039 | uint64_t lr, uint64_t ctr, uint32_t xer) | |
1040 | { | |
1041 | int regno = FIRST_UISA_SP_REGNUM; | |
61c5da0b KB |
1042 | |
1043 | supply_register (regno, (char *) &iar); | |
c11d79f2 KB |
1044 | supply_register (regno + 1, (char *) &msr); |
1045 | supply_register (regno + 2, (char *) &cr); | |
1046 | supply_register (regno + 3, (char *) &lr); | |
1047 | supply_register (regno + 4, (char *) &ctr); | |
1048 | supply_register (regno + 5, (char *) &xer); | |
1049 | } | |
1050 | ||
0fe7bf7b MS |
1051 | /* Record that the special registers contain the specified 32-bit |
1052 | values. */ | |
c11d79f2 KB |
1053 | |
1054 | static void | |
1055 | supply_sprs32 (uint32_t iar, uint32_t msr, uint32_t cr, | |
1056 | uint32_t lr, uint32_t ctr, uint32_t xer) | |
1057 | { | |
1058 | int regno = FIRST_UISA_SP_REGNUM; | |
61c5da0b KB |
1059 | |
1060 | supply_register (regno, (char *) &iar); | |
c11d79f2 KB |
1061 | supply_register (regno + 1, (char *) &msr); |
1062 | supply_register (regno + 2, (char *) &cr); | |
1063 | supply_register (regno + 3, (char *) &lr); | |
1064 | supply_register (regno + 4, (char *) &ctr); | |
1065 | supply_register (regno + 5, (char *) &xer); | |
1066 | } | |
1067 | ||
1068 | /* Fetch all registers from pthread PDTID, which doesn't have a kernel | |
1069 | thread. | |
1070 | ||
0fe7bf7b MS |
1071 | There's no way to query a single register from a non-kernel |
1072 | pthread, so there's no need for a single-register version of this | |
1073 | function. */ | |
c11d79f2 KB |
1074 | |
1075 | static void | |
1076 | fetch_regs_lib (pthdb_pthread_t pdtid) | |
1077 | { | |
1078 | int status, i; | |
1079 | pthdb_context_t ctx; | |
1080 | ||
8e2c28d4 KB |
1081 | if (debug_aix_thread) |
1082 | fprintf_unfiltered (gdb_stdlog, "fetch_regs_lib %lx\n", (long)pdtid); | |
c11d79f2 KB |
1083 | status = pthdb_pthread_context (pd_session, pdtid, &ctx); |
1084 | if (status != PTHDB_SUCCESS) | |
14fa3751 KB |
1085 | error ("aix-thread: fetch_registers: pthdb_pthread_context returned %s", |
1086 | pd_status2str (status)); | |
c11d79f2 | 1087 | |
0fe7bf7b | 1088 | /* General-purpose registers. */ |
c11d79f2 KB |
1089 | |
1090 | if (arch64) | |
1091 | supply_gprs64 (ctx.gpr); | |
1092 | else | |
1093 | for (i = 0; i < 32; i++) | |
1094 | supply_reg32 (i, ctx.gpr[i]); | |
1095 | ||
0fe7bf7b | 1096 | /* Floating-point registers. */ |
c11d79f2 KB |
1097 | |
1098 | supply_fprs (ctx.fpr); | |
1099 | ||
0fe7bf7b | 1100 | /* Special registers. */ |
c11d79f2 KB |
1101 | |
1102 | if (arch64) | |
1103 | supply_sprs64 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer); | |
1104 | else | |
1105 | supply_sprs32 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer); | |
1106 | } | |
1107 | ||
0fe7bf7b MS |
1108 | /* Fetch register REGNO if != -1 or all registers otherwise from |
1109 | kernel thread TID. | |
c11d79f2 | 1110 | |
0fe7bf7b MS |
1111 | AIX provides a way to query all of a kernel thread's GPRs, FPRs, or |
1112 | SPRs, but there's no way to query individual registers within those | |
1113 | groups. Therefore, if REGNO != -1, this function fetches an entire | |
1114 | group. | |
c11d79f2 | 1115 | |
0fe7bf7b MS |
1116 | Unfortunately, kernel thread register queries often fail with |
1117 | EPERM, indicating that the thread is in kernel space. This breaks | |
1118 | backtraces of threads other than the current one. To make that | |
1119 | breakage obvious without throwing an error to top level (which is | |
1120 | bad e.g. during "info threads" output), zero registers that can't | |
1121 | be retrieved. */ | |
c11d79f2 KB |
1122 | |
1123 | static void | |
1124 | fetch_regs_kern (int regno, pthdb_tid_t tid) | |
1125 | { | |
1126 | uint64_t gprs64[32]; | |
1127 | uint32_t gprs32[32]; | |
1128 | double fprs[32]; | |
1129 | struct ptxsprs sprs64; | |
1130 | struct ptsprs sprs32; | |
1131 | int i; | |
1132 | ||
8e2c28d4 KB |
1133 | if (debug_aix_thread) |
1134 | fprintf_unfiltered (gdb_stdlog, | |
1135 | "fetch_regs_kern tid=%lx regno=%d arch64=%d\n", | |
1136 | (long)tid, regno, arch64); | |
c11d79f2 | 1137 | |
0fe7bf7b | 1138 | /* General-purpose registers. */ |
c11d79f2 KB |
1139 | if (regno == -1 || regno < FP0_REGNUM) |
1140 | { | |
1141 | if (arch64) | |
1142 | { | |
0fe7bf7b MS |
1143 | if (!ptrace64aix (PTT_READ_GPRS, tid, |
1144 | (unsigned long) gprs64, 0, NULL)) | |
c11d79f2 KB |
1145 | memset (gprs64, 0, sizeof (gprs64)); |
1146 | supply_gprs64 (gprs64); | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL)) | |
1151 | memset (gprs32, 0, sizeof (gprs32)); | |
1152 | for (i = 0; i < 32; i++) | |
1153 | supply_reg32 (i, gprs32[i]); | |
1154 | } | |
1155 | } | |
1156 | ||
0fe7bf7b | 1157 | /* Floating-point registers. */ |
c11d79f2 KB |
1158 | |
1159 | if (regno == -1 || (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)) | |
1160 | { | |
1161 | if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL)) | |
1162 | memset (fprs, 0, sizeof (fprs)); | |
1163 | supply_fprs (fprs); | |
1164 | } | |
1165 | ||
0fe7bf7b | 1166 | /* Special-purpose registers. */ |
c11d79f2 | 1167 | |
0fe7bf7b MS |
1168 | if (regno == -1 || |
1169 | (regno > FPLAST_REGNUM && regno <= LAST_UISA_SP_REGNUM)) | |
c11d79f2 KB |
1170 | { |
1171 | if (arch64) | |
1172 | { | |
0fe7bf7b MS |
1173 | if (!ptrace64aix (PTT_READ_SPRS, tid, |
1174 | (unsigned long) &sprs64, 0, NULL)) | |
c11d79f2 KB |
1175 | memset (&sprs64, 0, sizeof (sprs64)); |
1176 | supply_sprs64 (sprs64.pt_iar, sprs64.pt_msr, sprs64.pt_cr, | |
1177 | sprs64.pt_lr, sprs64.pt_ctr, sprs64.pt_xer); | |
1178 | } | |
1179 | else | |
1180 | { | |
1181 | if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL)) | |
1182 | memset (&sprs32, 0, sizeof (sprs32)); | |
1183 | supply_sprs32 (sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr, | |
1184 | sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer); | |
1185 | ||
1186 | if (REGISTER_RAW_SIZE (LAST_UISA_SP_REGNUM)) | |
1187 | supply_register (LAST_UISA_SP_REGNUM, (char *) &sprs32.pt_mq); | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | /* Fetch register REGNO if != -1 or all registers otherwise in the | |
0fe7bf7b | 1193 | thread/process specified by inferior_ptid. */ |
c11d79f2 KB |
1194 | |
1195 | static void | |
1196 | ops_fetch_registers (int regno) | |
1197 | { | |
1198 | struct thread_info *thread; | |
1199 | pthdb_tid_t tid; | |
1200 | ||
1201 | if (!PD_TID (inferior_ptid)) | |
1202 | base_ops.to_fetch_registers (regno); | |
1203 | else | |
1204 | { | |
1205 | thread = find_thread_pid (inferior_ptid); | |
1206 | tid = thread->private->tid; | |
1207 | ||
1208 | if (tid == PTHDB_INVALID_TID) | |
1209 | fetch_regs_lib (thread->private->pdtid); | |
1210 | else | |
1211 | fetch_regs_kern (regno, tid); | |
1212 | } | |
1213 | } | |
1214 | ||
61c5da0b KB |
1215 | /* Store the gp registers into an array of uint32_t or uint64_t. */ |
1216 | ||
1217 | static void | |
1218 | fill_gprs64 (uint64_t *vals) | |
1219 | { | |
1220 | int regno; | |
1221 | ||
1222 | for (regno = 0; regno < FP0_REGNUM; regno++) | |
cbe92db4 KB |
1223 | if (register_cached (regno)) |
1224 | regcache_collect (regno, vals + regno); | |
61c5da0b KB |
1225 | } |
1226 | ||
1227 | static void | |
1228 | fill_gprs32 (uint32_t *vals) | |
1229 | { | |
1230 | int regno; | |
1231 | ||
1232 | for (regno = 0; regno < FP0_REGNUM; regno++) | |
cbe92db4 KB |
1233 | if (register_cached (regno)) |
1234 | regcache_collect (regno, vals + regno); | |
61c5da0b KB |
1235 | } |
1236 | ||
1237 | /* Store the floating point registers into a double array. */ | |
1238 | static void | |
1239 | fill_fprs (double *vals) | |
1240 | { | |
1241 | int regno; | |
1242 | ||
1243 | for (regno = FP0_REGNUM; regno < FPLAST_REGNUM; regno++) | |
cbe92db4 KB |
1244 | if (register_cached (regno)) |
1245 | regcache_collect (regno, vals + regno); | |
61c5da0b KB |
1246 | } |
1247 | ||
c11d79f2 | 1248 | /* Store the special registers into the specified 64-bit and 32-bit |
0fe7bf7b | 1249 | locations. */ |
c11d79f2 KB |
1250 | |
1251 | static void | |
1252 | fill_sprs64 (uint64_t *iar, uint64_t *msr, uint32_t *cr, | |
1253 | uint64_t *lr, uint64_t *ctr, uint32_t *xer) | |
1254 | { | |
1255 | int regno = FIRST_UISA_SP_REGNUM; | |
61c5da0b KB |
1256 | |
1257 | gdb_assert (sizeof (*iar) == REGISTER_RAW_SIZE (regno)); | |
1258 | ||
cbe92db4 KB |
1259 | if (register_cached (regno)) |
1260 | regcache_collect (regno, iar); | |
1261 | if (register_cached (regno + 1)) | |
1262 | regcache_collect (regno + 1, msr); | |
1263 | if (register_cached (regno + 2)) | |
1264 | regcache_collect (regno + 2, cr); | |
1265 | if (register_cached (regno + 3)) | |
1266 | regcache_collect (regno + 3, lr); | |
1267 | if (register_cached (regno + 4)) | |
1268 | regcache_collect (regno + 4, ctr); | |
1269 | if (register_cached (regno + 5)) | |
1270 | regcache_collect (regno + 5, xer); | |
61c5da0b KB |
1271 | } |
1272 | ||
1273 | static void | |
1274 | fill_sprs32 (unsigned long *iar, unsigned long *msr, unsigned long *cr, | |
1275 | unsigned long *lr, unsigned long *ctr, unsigned long *xer) | |
1276 | { | |
1277 | int regno = FIRST_UISA_SP_REGNUM; | |
1278 | ||
1279 | /* If this assert() fails, the most likely reason is that GDB was | |
1280 | built incorrectly. In order to make use of many of the header | |
1281 | files in /usr/include/sys, GDB needs to be configured so that | |
1282 | sizeof (long) == 4). */ | |
1283 | gdb_assert (sizeof (*iar) == REGISTER_RAW_SIZE (regno)); | |
1284 | ||
cbe92db4 KB |
1285 | if (register_cached (regno)) |
1286 | regcache_collect (regno, iar); | |
1287 | if (register_cached (regno + 1)) | |
1288 | regcache_collect (regno + 1, msr); | |
1289 | if (register_cached (regno + 2)) | |
1290 | regcache_collect (regno + 2, cr); | |
1291 | if (register_cached (regno + 3)) | |
1292 | regcache_collect (regno + 3, lr); | |
1293 | if (register_cached (regno + 4)) | |
1294 | regcache_collect (regno + 4, ctr); | |
1295 | if (register_cached (regno + 5)) | |
1296 | regcache_collect (regno + 5, xer); | |
c11d79f2 KB |
1297 | } |
1298 | ||
1299 | /* Store all registers into pthread PDTID, which doesn't have a kernel | |
1300 | thread. | |
1301 | ||
0fe7bf7b MS |
1302 | It's possible to store a single register into a non-kernel pthread, |
1303 | but I doubt it's worth the effort. */ | |
c11d79f2 KB |
1304 | |
1305 | static void | |
1306 | store_regs_lib (pthdb_pthread_t pdtid) | |
1307 | { | |
1308 | int status, i; | |
1309 | pthdb_context_t ctx; | |
61c5da0b KB |
1310 | uint32_t int32; |
1311 | uint64_t int64; | |
1312 | double dbl; | |
c11d79f2 | 1313 | |
8e2c28d4 | 1314 | if (debug_aix_thread) |
0fe7bf7b MS |
1315 | fprintf_unfiltered (gdb_stdlog, |
1316 | "store_regs_lib %lx\n", (long)pdtid); | |
c11d79f2 | 1317 | |
0fe7bf7b MS |
1318 | /* Retrieve the thread's current context for its non-register |
1319 | values. */ | |
c11d79f2 KB |
1320 | status = pthdb_pthread_context (pd_session, pdtid, &ctx); |
1321 | if (status != PTHDB_SUCCESS) | |
14fa3751 KB |
1322 | error ("aix-thread: store_registers: pthdb_pthread_context returned %s", |
1323 | pd_status2str (status)); | |
c11d79f2 | 1324 | |
61c5da0b | 1325 | /* Collect general-purpose register values from the regcache. */ |
c11d79f2 KB |
1326 | |
1327 | for (i = 0; i < 32; i++) | |
cbe92db4 KB |
1328 | if (register_cached (i)) |
1329 | { | |
1330 | if (arch64) | |
1331 | { | |
1332 | regcache_collect (i, (void *) &int64); | |
1333 | ctx.gpr[i] = int64; | |
1334 | } | |
1335 | else | |
1336 | { | |
1337 | regcache_collect (i, (void *) &int32); | |
1338 | ctx.gpr[i] = int32; | |
1339 | } | |
1340 | } | |
c11d79f2 | 1341 | |
61c5da0b KB |
1342 | /* Collect floating-point register values from the regcache. */ |
1343 | fill_fprs (ctx.fpr); | |
c11d79f2 | 1344 | |
61c5da0b KB |
1345 | /* Special registers (always kept in ctx as 64 bits). */ |
1346 | if (arch64) | |
1347 | { | |
1348 | fill_sprs64 (&ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr, &ctx.xer); | |
1349 | } | |
1350 | else | |
1351 | { | |
1352 | /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32. | |
1353 | Solution: use 32-bit temp variables. (The assert() in fill_sprs32() | |
1354 | will fail if the size of an unsigned long is incorrect. If this | |
1355 | happens, GDB needs to be reconfigured so that longs are 32-bits.) */ | |
1356 | unsigned long tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer; | |
1357 | ||
1358 | fill_sprs32 (&tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr, &tmp_xer); | |
cbe92db4 KB |
1359 | if (register_cached (FIRST_UISA_SP_REGNUM)) |
1360 | ctx.iar = tmp_iar; | |
1361 | if (register_cached (FIRST_UISA_SP_REGNUM + 1)) | |
1362 | ctx.msr = tmp_msr; | |
1363 | if (register_cached (FIRST_UISA_SP_REGNUM + 2)) | |
1364 | ctx.cr = tmp_cr; | |
1365 | if (register_cached (FIRST_UISA_SP_REGNUM + 3)) | |
1366 | ctx.lr = tmp_lr; | |
1367 | if (register_cached (FIRST_UISA_SP_REGNUM + 4)) | |
1368 | ctx.ctr = tmp_ctr; | |
1369 | if (register_cached (FIRST_UISA_SP_REGNUM + 5)) | |
1370 | ctx.xer = tmp_xer; | |
61c5da0b | 1371 | } |
c11d79f2 KB |
1372 | |
1373 | status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx); | |
1374 | if (status != PTHDB_SUCCESS) | |
14fa3751 KB |
1375 | error ("aix-thread: store_registers: pthdb_pthread_setcontext returned %s", |
1376 | pd_status2str (status)); | |
c11d79f2 KB |
1377 | } |
1378 | ||
0fe7bf7b MS |
1379 | /* Store register REGNO if != -1 or all registers otherwise into |
1380 | kernel thread TID. | |
c11d79f2 | 1381 | |
0fe7bf7b MS |
1382 | AIX provides a way to set all of a kernel thread's GPRs, FPRs, or |
1383 | SPRs, but there's no way to set individual registers within those | |
1384 | groups. Therefore, if REGNO != -1, this function stores an entire | |
1385 | group. */ | |
c11d79f2 KB |
1386 | |
1387 | static void | |
1388 | store_regs_kern (int regno, pthdb_tid_t tid) | |
1389 | { | |
61c5da0b KB |
1390 | uint64_t gprs64[32]; |
1391 | uint32_t gprs32[32]; | |
1392 | double fprs[32]; | |
c11d79f2 | 1393 | struct ptxsprs sprs64; |
61c5da0b KB |
1394 | struct ptsprs sprs32; |
1395 | int i; | |
c11d79f2 | 1396 | |
8e2c28d4 KB |
1397 | if (debug_aix_thread) |
1398 | fprintf_unfiltered (gdb_stdlog, "store_regs_kern tid=%lx regno=%d\n", | |
1399 | (long)tid, regno); | |
c11d79f2 | 1400 | |
0fe7bf7b | 1401 | /* General-purpose registers. */ |
c11d79f2 KB |
1402 | if (regno == -1 || regno < FP0_REGNUM) |
1403 | { | |
c11d79f2 | 1404 | if (arch64) |
61c5da0b | 1405 | { |
cbe92db4 KB |
1406 | /* Pre-fetch: some regs may not be in the cache. */ |
1407 | ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL); | |
61c5da0b KB |
1408 | fill_gprs64 (gprs64); |
1409 | ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL); | |
1410 | } | |
c11d79f2 | 1411 | else |
61c5da0b | 1412 | { |
cbe92db4 KB |
1413 | /* Pre-fetch: some regs may not be in the cache. */ |
1414 | ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL); | |
61c5da0b KB |
1415 | fill_gprs32 (gprs32); |
1416 | ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL); | |
1417 | } | |
c11d79f2 KB |
1418 | } |
1419 | ||
0fe7bf7b | 1420 | /* Floating-point registers. */ |
c11d79f2 KB |
1421 | |
1422 | if (regno == -1 || (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)) | |
1423 | { | |
cbe92db4 KB |
1424 | /* Pre-fetch: some regs may not be in the cache. */ |
1425 | ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL); | |
61c5da0b KB |
1426 | fill_fprs (fprs); |
1427 | ptrace32 (PTT_WRITE_FPRS, tid, (int *) fprs, 0, NULL); | |
c11d79f2 KB |
1428 | } |
1429 | ||
0fe7bf7b | 1430 | /* Special-purpose registers. */ |
c11d79f2 | 1431 | |
0fe7bf7b MS |
1432 | if (regno == -1 || |
1433 | (regno > FPLAST_REGNUM && regno <= LAST_UISA_SP_REGNUM)) | |
c11d79f2 KB |
1434 | { |
1435 | if (arch64) | |
1436 | { | |
cbe92db4 | 1437 | /* Pre-fetch: some registers won't be in the cache. */ |
0fe7bf7b MS |
1438 | ptrace64aix (PTT_READ_SPRS, tid, |
1439 | (unsigned long) &sprs64, 0, NULL); | |
c11d79f2 | 1440 | fill_sprs64 (&sprs64.pt_iar, &sprs64.pt_msr, &sprs64.pt_cr, |
61c5da0b | 1441 | &sprs64.pt_lr, &sprs64.pt_ctr, &sprs64.pt_xer); |
0fe7bf7b MS |
1442 | ptrace64aix (PTT_WRITE_SPRS, tid, |
1443 | (unsigned long) &sprs64, 0, NULL); | |
c11d79f2 KB |
1444 | } |
1445 | else | |
1446 | { | |
cbe92db4 | 1447 | /* Pre-fetch: some registers won't be in the cache. */ |
c11d79f2 KB |
1448 | ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL); |
1449 | ||
61c5da0b KB |
1450 | fill_sprs32 (&sprs32.pt_iar, &sprs32.pt_msr, &sprs32.pt_cr, |
1451 | &sprs32.pt_lr, &sprs32.pt_ctr, &sprs32.pt_xer); | |
c11d79f2 KB |
1452 | |
1453 | if (REGISTER_RAW_SIZE (LAST_UISA_SP_REGNUM)) | |
cbe92db4 KB |
1454 | if (register_cached (LAST_UISA_SP_REGNUM)) |
1455 | regcache_collect (LAST_UISA_SP_REGNUM, &sprs32.pt_mq); | |
c11d79f2 KB |
1456 | |
1457 | ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL); | |
1458 | } | |
1459 | } | |
1460 | } | |
1461 | ||
0fe7bf7b MS |
1462 | /* Store gdb's current view of the register set into the |
1463 | thread/process specified by inferior_ptid. */ | |
c11d79f2 KB |
1464 | |
1465 | static void | |
1466 | ops_store_registers (int regno) | |
1467 | { | |
1468 | struct thread_info *thread; | |
1469 | pthdb_tid_t tid; | |
1470 | ||
1471 | if (!PD_TID (inferior_ptid)) | |
1472 | base_ops.to_store_registers (regno); | |
1473 | else | |
1474 | { | |
1475 | thread = find_thread_pid (inferior_ptid); | |
1476 | tid = thread->private->tid; | |
1477 | ||
1478 | if (tid == PTHDB_INVALID_TID) | |
1479 | store_regs_lib (thread->private->pdtid); | |
1480 | else | |
1481 | store_regs_kern (regno, tid); | |
1482 | } | |
1483 | } | |
1484 | ||
0fe7bf7b MS |
1485 | /* Transfer LEN bytes of memory from GDB address MYADDR to target |
1486 | address MEMADDR if WRITE and vice versa otherwise. */ | |
c11d79f2 KB |
1487 | |
1488 | static int | |
1489 | ops_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, | |
1490 | struct mem_attrib *attrib, | |
1491 | struct target_ops *target) | |
1492 | { | |
1493 | int n; | |
14fa3751 KB |
1494 | struct cleanup *cleanup = save_inferior_ptid (); |
1495 | ||
1496 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
0fe7bf7b MS |
1497 | n = base_ops.to_xfer_memory (memaddr, myaddr, len, |
1498 | write, attrib, &base_ops); | |
14fa3751 | 1499 | do_cleanups (cleanup); |
c11d79f2 | 1500 | |
c11d79f2 KB |
1501 | return n; |
1502 | } | |
1503 | ||
0fe7bf7b | 1504 | /* Kill and forget about the inferior process. */ |
c11d79f2 KB |
1505 | |
1506 | static void | |
1507 | ops_kill (void) | |
1508 | { | |
14fa3751 KB |
1509 | struct cleanup *cleanup = save_inferior_ptid (); |
1510 | ||
1511 | inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); | |
1512 | base_ops.to_kill (); | |
1513 | do_cleanups (cleanup); | |
c11d79f2 KB |
1514 | } |
1515 | ||
0fe7bf7b | 1516 | /* Clean up after the inferior exits. */ |
c11d79f2 KB |
1517 | |
1518 | static void | |
1519 | ops_mourn_inferior (void) | |
1520 | { | |
1521 | pd_deactivate (); | |
1522 | base_ops.to_mourn_inferior (); | |
1523 | } | |
1524 | ||
0fe7bf7b | 1525 | /* Return whether thread PID is still valid. */ |
c11d79f2 KB |
1526 | |
1527 | static int | |
1528 | ops_thread_alive (ptid_t ptid) | |
1529 | { | |
1530 | if (!PD_TID (ptid)) | |
1531 | return base_ops.to_thread_alive (ptid); | |
1532 | ||
0fe7bf7b MS |
1533 | /* We update the thread list every time the child stops, so all |
1534 | valid threads should be in the thread list. */ | |
c11d79f2 KB |
1535 | return in_thread_list (ptid); |
1536 | } | |
1537 | ||
0fe7bf7b MS |
1538 | /* Return a printable representation of composite PID for use in |
1539 | "info threads" output. */ | |
c11d79f2 KB |
1540 | |
1541 | static char * | |
1542 | ops_pid_to_str (ptid_t ptid) | |
1543 | { | |
1544 | static char *ret = NULL; | |
1545 | ||
1546 | if (!PD_TID (ptid)) | |
1547 | return base_ops.to_pid_to_str (ptid); | |
1548 | ||
1549 | /* Free previous return value; a new one will be allocated by | |
1550 | xasprintf(). */ | |
1551 | xfree (ret); | |
1552 | ||
1553 | xasprintf (&ret, "Thread %ld", ptid_get_tid (ptid)); | |
1554 | return ret; | |
1555 | } | |
1556 | ||
0fe7bf7b MS |
1557 | /* Return a printable representation of extra information about |
1558 | THREAD, for use in "info threads" output. */ | |
c11d79f2 KB |
1559 | |
1560 | static char * | |
1561 | ops_extra_thread_info (struct thread_info *thread) | |
1562 | { | |
1563 | struct ui_file *buf; | |
1564 | int status; | |
1565 | pthdb_pthread_t pdtid; | |
1566 | pthdb_tid_t tid; | |
1567 | pthdb_state_t state; | |
1568 | pthdb_suspendstate_t suspendstate; | |
1569 | pthdb_detachstate_t detachstate; | |
1570 | int cancelpend; | |
1571 | long length; | |
1572 | static char *ret = NULL; | |
1573 | ||
1574 | if (!PD_TID (thread->ptid)) | |
1575 | return NULL; | |
1576 | ||
1577 | buf = mem_fileopen (); | |
1578 | ||
1579 | pdtid = thread->private->pdtid; | |
1580 | tid = thread->private->tid; | |
1581 | ||
1582 | if (tid != PTHDB_INVALID_TID) | |
1583 | fprintf_unfiltered (buf, "tid %d", tid); | |
1584 | ||
1585 | status = pthdb_pthread_state (pd_session, pdtid, &state); | |
1586 | if (status != PTHDB_SUCCESS) | |
1587 | state = PST_NOTSUP; | |
1588 | fprintf_unfiltered (buf, ", %s", state2str (state)); | |
1589 | ||
0fe7bf7b MS |
1590 | status = pthdb_pthread_suspendstate (pd_session, pdtid, |
1591 | &suspendstate); | |
c11d79f2 KB |
1592 | if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED) |
1593 | fprintf_unfiltered (buf, ", suspended"); | |
1594 | ||
0fe7bf7b MS |
1595 | status = pthdb_pthread_detachstate (pd_session, pdtid, |
1596 | &detachstate); | |
c11d79f2 KB |
1597 | if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED) |
1598 | fprintf_unfiltered (buf, ", detached"); | |
1599 | ||
1600 | pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend); | |
1601 | if (status == PTHDB_SUCCESS && cancelpend) | |
1602 | fprintf_unfiltered (buf, ", cancel pending"); | |
1603 | ||
1604 | ui_file_write (buf, "", 1); | |
1605 | ||
1606 | xfree (ret); /* Free old buffer. */ | |
1607 | ||
1608 | ret = ui_file_xstrdup (buf, &length); | |
1609 | ui_file_delete (buf); | |
1610 | ||
1611 | return ret; | |
1612 | } | |
1613 | ||
0fe7bf7b | 1614 | /* Initialize target ops. */ |
c11d79f2 KB |
1615 | |
1616 | static void | |
1617 | init_ops (void) | |
1618 | { | |
1619 | ops.to_shortname = "aix-threads"; | |
1620 | ops.to_longname = "AIX pthread support"; | |
1621 | ops.to_doc = "AIX pthread support"; | |
1622 | ||
1623 | ops.to_attach = ops_attach; | |
1624 | ops.to_detach = ops_detach; | |
1625 | ops.to_resume = ops_resume; | |
1626 | ops.to_wait = ops_wait; | |
1627 | ops.to_fetch_registers = ops_fetch_registers; | |
1628 | ops.to_store_registers = ops_store_registers; | |
c11d79f2 | 1629 | ops.to_xfer_memory = ops_xfer_memory; |
0fe7bf7b MS |
1630 | /* No need for ops.to_create_inferior, because we activate thread |
1631 | debugging when the inferior reaches pd_brk_addr. */ | |
c11d79f2 KB |
1632 | ops.to_kill = ops_kill; |
1633 | ops.to_mourn_inferior = ops_mourn_inferior; | |
1634 | ops.to_thread_alive = ops_thread_alive; | |
1635 | ops.to_pid_to_str = ops_pid_to_str; | |
1636 | ops.to_extra_thread_info = ops_extra_thread_info; | |
1637 | ops.to_stratum = thread_stratum; | |
1638 | ops.to_magic = OPS_MAGIC; | |
1639 | } | |
1640 | ||
1641 | /* Module startup initialization function, automagically called by | |
0fe7bf7b | 1642 | init.c. */ |
c11d79f2 KB |
1643 | |
1644 | void | |
1645 | _initialize_aix_thread (void) | |
1646 | { | |
1647 | init_ops (); | |
1648 | add_target (&ops); | |
1649 | ||
0fe7bf7b | 1650 | /* Notice when object files get loaded and unloaded. */ |
c11d79f2 KB |
1651 | target_new_objfile_chain = target_new_objfile_hook; |
1652 | target_new_objfile_hook = new_objfile; | |
8e2c28d4 KB |
1653 | |
1654 | add_show_from_set (add_set_cmd ("aix-thread", no_class, var_zinteger, | |
1655 | (char *) &debug_aix_thread, | |
1656 | "Set debugging of AIX thread module.\n" | |
1657 | "Enables printf debugging output.\n", | |
1658 | &setdebuglist), | |
1659 | &showdebuglist); | |
c11d79f2 | 1660 | } |