Add missing prototypes for build in ppx-aix.
[deliverable/binutils-gdb.git] / gdb / aix-thread.c
CommitLineData
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1/* Low level interface for debugging AIX 4.3+ pthreads.
2
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JB
3 Copyright (C) 1999-2000, 2002, 2007-2012 Free Software Foundation,
4 Inc.
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5 Written by Nick Duffek <nsd@redhat.com>.
6
7 This file is part of GDB.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
a9762ec7 11 the Free Software Foundation; either version 3 of the License, or
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12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
a9762ec7 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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21
22
23/* This module uses the libpthdebug.a library provided by AIX 4.3+ for
24 debugging pthread applications.
25
26 Some name prefix conventions:
27 pthdb_ provided by libpthdebug.a
28 pdc_ callbacks that this module provides to libpthdebug.a
29 pd_ variables or functions interfacing with libpthdebug.a
30
31 libpthdebug peculiarities:
32
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MS
33 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
34 it's not documented, and after several calls it stops working
35 and causes other libpthdebug functions to fail.
c11d79f2 36
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37 - pthdb_tid_pthread() doesn't always work after
38 pthdb_session_update(), but it does work after cycling through
39 all threads using pthdb_pthread().
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40
41 */
42
43#include "defs.h"
61c5da0b 44#include "gdb_assert.h"
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45#include "gdbthread.h"
46#include "target.h"
47#include "inferior.h"
48#include "regcache.h"
8e2c28d4 49#include "gdbcmd.h"
27bae383 50#include "ppc-tdep.h"
0d4d5484 51#include "gdb_string.h"
06d3b283 52#include "observer.h"
c11d79f2 53
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54#include <procinfo.h>
55#include <sys/types.h>
56#include <sys/ptrace.h>
57#include <sys/reg.h>
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58#include <sched.h>
59#include <sys/pthdebug.h>
60
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61#if !HAVE_DECL_GETTHRDS
62extern int getthrds (pid_t, struct thrdsinfo64 *, int, pthdb_tid_t *, int);
63#endif
64
0fe7bf7b 65/* Whether to emit debugging output. */
8e2c28d4 66static int debug_aix_thread;
c11d79f2 67
0fe7bf7b 68/* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
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69#ifndef PTHDB_VERSION_3
70#define pthdb_tid_t tid_t
71#endif
72
0fe7bf7b 73/* Return whether to treat PID as a debuggable thread id. */
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74
75#define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
76
77/* Build a thread ptid. */
78#define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
79
80/* Build and lwp ptid. */
81#define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
82
c11d79f2 83/* pthdb_user_t value that we pass to pthdb functions. 0 causes
0fe7bf7b 84 PTHDB_BAD_USER errors, so use 1. */
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85
86#define PD_USER 1
87
0fe7bf7b 88/* Success and failure values returned by pthdb callbacks. */
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89
90#define PDC_SUCCESS PTHDB_SUCCESS
91#define PDC_FAILURE PTHDB_CALLBACK
92
0fe7bf7b 93/* Private data attached to each element in GDB's thread list. */
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94
95struct private_thread_info {
0fe7bf7b 96 pthdb_pthread_t pdtid; /* thread's libpthdebug id */
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97 pthdb_tid_t tid; /* kernel thread id */
98};
99
0fe7bf7b 100/* Information about a thread of which libpthdebug is aware. */
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101
102struct pd_thread {
103 pthdb_pthread_t pdtid;
104 pthread_t pthid;
105 pthdb_tid_t tid;
106};
107
0fe7bf7b 108/* This module's target-specific operations, active while pd_able is true. */
c11d79f2 109
206d3d3c 110static struct target_ops aix_thread_ops;
c11d79f2 111
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112/* Address of the function that libpthread will call when libpthdebug
113 is ready to be initialized. */
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114
115static CORE_ADDR pd_brk_addr;
116
0fe7bf7b 117/* Whether the current application is debuggable by pthdb. */
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118
119static int pd_able = 0;
120
0fe7bf7b 121/* Whether a threaded application is being debugged. */
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122
123static int pd_active = 0;
124
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125/* Whether the current architecture is 64-bit.
126 Only valid when pd_able is true. */
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127
128static int arch64;
129
0fe7bf7b 130/* Forward declarations for pthdb callbacks. */
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131
132static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int);
133static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
134static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
135static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid,
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136 unsigned long long flags,
137 pthdb_context_t *context);
c11d79f2 138static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid,
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139 unsigned long long flags,
140 pthdb_context_t *context);
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141static int pdc_alloc (pthdb_user_t, size_t, void **);
142static int pdc_realloc (pthdb_user_t, void *, size_t, void **);
143static int pdc_dealloc (pthdb_user_t, void *);
144
0fe7bf7b 145/* pthdb callbacks. */
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146
147static pthdb_callbacks_t pd_callbacks = {
148 pdc_symbol_addrs,
149 pdc_read_data,
150 pdc_write_data,
151 pdc_read_regs,
152 pdc_write_regs,
153 pdc_alloc,
154 pdc_realloc,
155 pdc_dealloc,
156 NULL
157};
158
0fe7bf7b 159/* Current pthdb session. */
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160
161static pthdb_session_t pd_session;
162
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163/* Return a printable representation of pthdebug function return
164 STATUS. */
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165
166static char *
167pd_status2str (int status)
168{
169 switch (status)
170 {
171 case PTHDB_SUCCESS: return "SUCCESS";
172 case PTHDB_NOSYS: return "NOSYS";
173 case PTHDB_NOTSUP: return "NOTSUP";
174 case PTHDB_BAD_VERSION: return "BAD_VERSION";
175 case PTHDB_BAD_USER: return "BAD_USER";
176 case PTHDB_BAD_SESSION: return "BAD_SESSION";
177 case PTHDB_BAD_MODE: return "BAD_MODE";
178 case PTHDB_BAD_FLAGS: return "BAD_FLAGS";
179 case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK";
180 case PTHDB_BAD_POINTER: return "BAD_POINTER";
181 case PTHDB_BAD_CMD: return "BAD_CMD";
182 case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD";
183 case PTHDB_BAD_ATTR: return "BAD_ATTR";
184 case PTHDB_BAD_MUTEX: return "BAD_MUTEX";
185 case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR";
186 case PTHDB_BAD_COND: return "BAD_COND";
187 case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR";
188 case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK";
189 case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR";
190 case PTHDB_BAD_KEY: return "BAD_KEY";
191 case PTHDB_BAD_PTID: return "BAD_PTID";
192 case PTHDB_BAD_TID: return "BAD_TID";
193 case PTHDB_CALLBACK: return "CALLBACK";
194 case PTHDB_CONTEXT: return "CONTEXT";
195 case PTHDB_HELD: return "HELD";
196 case PTHDB_NOT_HELD: return "NOT_HELD";
197 case PTHDB_MEMORY: return "MEMORY";
198 case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED";
199 case PTHDB_SYMBOL: return "SYMBOL";
200 case PTHDB_NOT_AVAIL: return "NOT_AVAIL";
201 case PTHDB_INTERNAL: return "INTERNAL";
202 default: return "UNKNOWN";
203 }
204}
205
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206/* A call to ptrace(REQ, ID, ...) just returned RET. Check for
207 exceptional conditions and either return nonlocally or else return
208 1 for success and 0 for failure. */
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209
210static int
211ptrace_check (int req, int id, int ret)
212{
213 if (ret == 0 && !errno)
214 return 1;
215
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216 /* According to ptrace(2), ptrace may fail with EPERM if "the
217 Identifier parameter corresponds to a kernel thread which is
218 stopped in kernel mode and whose computational state cannot be
219 read or written." This happens quite often with register reads. */
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220
221 switch (req)
222 {
223 case PTT_READ_GPRS:
224 case PTT_READ_FPRS:
225 case PTT_READ_SPRS:
226 if (ret == -1 && errno == EPERM)
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227 {
228 if (debug_aix_thread)
0fe7bf7b 229 fprintf_unfiltered (gdb_stdlog,
27bae383 230 "ptrace (%d, %d) = %d (errno = %d)\n",
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231 req, id, ret, errno);
232 return ret == -1 ? 0 : 1;
233 }
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234 break;
235 }
edefbb7c 236 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
be006b8b 237 req, id, ret, errno, safe_strerror (errno));
0fe7bf7b 238 return 0; /* Not reached. */
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239}
240
0fe7bf7b 241/* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
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242
243static int
244ptrace64aix (int req, int id, long long addr, int data, int *buf)
245{
246 errno = 0;
247 return ptrace_check (req, id, ptracex (req, id, addr, data, buf));
248}
249
0fe7bf7b 250/* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
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251
252static int
253ptrace32 (int req, int id, int *addr, int data, int *buf)
254{
255 errno = 0;
0fe7bf7b 256 return ptrace_check (req, id,
206d3d3c 257 ptrace (req, id, (int *) addr, data, buf));
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258}
259
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260/* If *PIDP is a composite process/thread id, convert it to a
261 process id. */
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262
263static void
264pid_to_prc (ptid_t *ptidp)
265{
266 ptid_t ptid;
267
268 ptid = *ptidp;
269 if (PD_TID (ptid))
270 *ptidp = pid_to_ptid (PIDGET (ptid));
271}
272
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273/* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
274 the address of SYMBOLS[<i>].name. */
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275
276static int
277pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count)
278{
279 struct minimal_symbol *ms;
280 int i;
281 char *name;
282
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283 if (debug_aix_thread)
284 fprintf_unfiltered (gdb_stdlog,
27bae383 285 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
8e2c28d4 286 user, (long) symbols, count);
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287
288 for (i = 0; i < count; i++)
289 {
290 name = symbols[i].name;
8e2c28d4 291 if (debug_aix_thread)
0fe7bf7b 292 fprintf_unfiltered (gdb_stdlog,
27bae383 293 " symbols[%d].name = \"%s\"\n", i, name);
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294
295 if (!*name)
296 symbols[i].addr = 0;
297 else
298 {
299 if (!(ms = lookup_minimal_symbol (name, NULL, NULL)))
300 {
8e2c28d4 301 if (debug_aix_thread)
27bae383 302 fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE\n");
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303 return PDC_FAILURE;
304 }
305 symbols[i].addr = SYMBOL_VALUE_ADDRESS (ms);
306 }
8e2c28d4 307 if (debug_aix_thread)
27bae383 308 fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = %s\n",
bb599908 309 i, hex_string (symbols[i].addr));
c11d79f2 310 }
8e2c28d4 311 if (debug_aix_thread)
27bae383 312 fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS\n");
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313 return PDC_SUCCESS;
314}
315
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316/* Read registers call back function should be able to read the
317 context information of a debuggee kernel thread from an active
318 process or from a core file. The information should be formatted
319 in context64 form for both 32-bit and 64-bit process.
320 If successful return 0, else non-zero is returned. */
321
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322static int
323pdc_read_regs (pthdb_user_t user,
324 pthdb_tid_t tid,
325 unsigned long long flags,
326 pthdb_context_t *context)
327{
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328 /* This function doesn't appear to be used, so we could probably
329 just return 0 here. HOWEVER, if it is not defined, the OS will
330 complain and several thread debug functions will fail. In case
331 this is needed, I have implemented what I think it should do,
332 however this code is untested. */
333
063715bf
JB
334 uint64_t gprs64[ppc_num_gprs];
335 uint32_t gprs32[ppc_num_gprs];
336 double fprs[ppc_num_fprs];
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337 struct ptxsprs sprs64;
338 struct ptsprs sprs32;
339
8e2c28d4 340 if (debug_aix_thread)
27bae383 341 fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%s\n",
bb599908 342 (int) tid, hex_string (flags));
c11d79f2 343
0fe7bf7b 344 /* General-purpose registers. */
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345 if (flags & PTHDB_FLAG_GPRS)
346 {
347 if (arch64)
348 {
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MS
349 if (!ptrace64aix (PTT_READ_GPRS, tid,
350 (unsigned long) gprs64, 0, NULL))
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351 memset (gprs64, 0, sizeof (gprs64));
352 memcpy (context->gpr, gprs64, sizeof(gprs64));
353 }
354 else
355 {
356 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
357 memset (gprs32, 0, sizeof (gprs32));
358 memcpy (context->gpr, gprs32, sizeof(gprs32));
359 }
360 }
361
0fe7bf7b 362 /* Floating-point registers. */
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363 if (flags & PTHDB_FLAG_FPRS)
364 {
ed1bd5f5 365 if (!ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL))
c11d79f2 366 memset (fprs, 0, sizeof (fprs));
46bba1ef 367 memcpy (context->fpr, fprs, sizeof(fprs));
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368 }
369
0fe7bf7b 370 /* Special-purpose registers. */
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371 if (flags & PTHDB_FLAG_SPRS)
372 {
373 if (arch64)
374 {
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375 if (!ptrace64aix (PTT_READ_SPRS, tid,
376 (unsigned long) &sprs64, 0, NULL))
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377 memset (&sprs64, 0, sizeof (sprs64));
378 memcpy (&context->msr, &sprs64, sizeof(sprs64));
379 }
380 else
381 {
382 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
383 memset (&sprs32, 0, sizeof (sprs32));
384 memcpy (&context->msr, &sprs32, sizeof(sprs32));
385 }
386 }
387 return 0;
388}
389
0fe7bf7b 390/* Write register function should be able to write requested context
0963b4bd 391 information to specified debuggee's kernel thread id.
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MS
392 If successful return 0, else non-zero is returned. */
393
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394static int
395pdc_write_regs (pthdb_user_t user,
396 pthdb_tid_t tid,
397 unsigned long long flags,
398 pthdb_context_t *context)
399{
0fe7bf7b
MS
400 /* This function doesn't appear to be used, so we could probably
401 just return 0 here. HOWEVER, if it is not defined, the OS will
402 complain and several thread debug functions will fail. In case
403 this is needed, I have implemented what I think it should do,
404 however this code is untested. */
c11d79f2 405
8e2c28d4 406 if (debug_aix_thread)
27bae383 407 fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%s\n",
bb599908 408 (int) tid, hex_string (flags));
c11d79f2 409
0fe7bf7b 410 /* General-purpose registers. */
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411 if (flags & PTHDB_FLAG_GPRS)
412 {
413 if (arch64)
0fe7bf7b 414 ptrace64aix (PTT_WRITE_GPRS, tid,
206d3d3c 415 (unsigned long) context->gpr, 0, NULL);
c11d79f2 416 else
206d3d3c 417 ptrace32 (PTT_WRITE_GPRS, tid, (int *) context->gpr, 0, NULL);
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418 }
419
0fe7bf7b 420 /* Floating-point registers. */
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421 if (flags & PTHDB_FLAG_FPRS)
422 {
206d3d3c 423 ptrace32 (PTT_WRITE_FPRS, tid, (int *) context->fpr, 0, NULL);
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424 }
425
0fe7bf7b 426 /* Special-purpose registers. */
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427 if (flags & PTHDB_FLAG_SPRS)
428 {
429 if (arch64)
430 {
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431 ptrace64aix (PTT_WRITE_SPRS, tid,
432 (unsigned long) &context->msr, 0, NULL);
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433 }
434 else
435 {
ed1bd5f5 436 ptrace32 (PTT_WRITE_SPRS, tid, (void *) &context->msr, 0, NULL);
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437 }
438 }
439 return 0;
440}
441
0fe7bf7b 442/* pthdb callback: read LEN bytes from process ADDR into BUF. */
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443
444static int
0fe7bf7b
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445pdc_read_data (pthdb_user_t user, void *buf,
446 pthdb_addr_t addr, size_t len)
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447{
448 int status, ret;
449
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450 if (debug_aix_thread)
451 fprintf_unfiltered (gdb_stdlog,
27bae383 452 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
bb599908 453 user, (long) buf, hex_string (addr), len);
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454
455 status = target_read_memory (addr, buf, len);
456 ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
457
8e2c28d4 458 if (debug_aix_thread)
27bae383 459 fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n",
0fe7bf7b 460 status, pd_status2str (ret));
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461 return ret;
462}
463
0fe7bf7b 464/* pthdb callback: write LEN bytes from BUF to process ADDR. */
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465
466static int
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MS
467pdc_write_data (pthdb_user_t user, void *buf,
468 pthdb_addr_t addr, size_t len)
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469{
470 int status, ret;
471
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472 if (debug_aix_thread)
473 fprintf_unfiltered (gdb_stdlog,
27bae383 474 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
bb599908 475 user, (long) buf, hex_string (addr), len);
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476
477 status = target_write_memory (addr, buf, len);
478 ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
479
8e2c28d4 480 if (debug_aix_thread)
27bae383 481 fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", status,
8e2c28d4 482 pd_status2str (ret));
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483 return ret;
484}
485
0fe7bf7b
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486/* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
487 in BUFP. */
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488
489static int
490pdc_alloc (pthdb_user_t user, size_t len, void **bufp)
491{
8e2c28d4
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492 if (debug_aix_thread)
493 fprintf_unfiltered (gdb_stdlog,
27bae383 494 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
8e2c28d4 495 user, len, (long) bufp);
c11d79f2 496 *bufp = xmalloc (len);
8e2c28d4 497 if (debug_aix_thread)
0fe7bf7b 498 fprintf_unfiltered (gdb_stdlog,
27bae383 499 " malloc returned 0x%lx\n", (long) *bufp);
0fe7bf7b
MS
500
501 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
502 be returned. */
503
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504 return *bufp ? PDC_SUCCESS : PDC_FAILURE;
505}
506
0fe7bf7b
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507/* pthdb callback: reallocate BUF, which was allocated by the alloc or
508 realloc callback, so that it contains LEN bytes, and store a
509 pointer to the result in BUFP. */
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510
511static int
512pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp)
513{
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514 if (debug_aix_thread)
515 fprintf_unfiltered (gdb_stdlog,
27bae383 516 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
8e2c28d4 517 user, (long) buf, len, (long) bufp);
be006b8b 518 *bufp = xrealloc (buf, len);
8e2c28d4 519 if (debug_aix_thread)
0fe7bf7b 520 fprintf_unfiltered (gdb_stdlog,
27bae383 521 " realloc returned 0x%lx\n", (long) *bufp);
c11d79f2
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522 return *bufp ? PDC_SUCCESS : PDC_FAILURE;
523}
524
0fe7bf7b
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525/* pthdb callback: free BUF, which was allocated by the alloc or
526 realloc callback. */
c11d79f2
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527
528static int
529pdc_dealloc (pthdb_user_t user, void *buf)
530{
8e2c28d4 531 if (debug_aix_thread)
0fe7bf7b 532 fprintf_unfiltered (gdb_stdlog,
27bae383 533 "pdc_free (user = %ld, buf = 0x%lx)\n", user,
8e2c28d4 534 (long) buf);
c11d79f2
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535 xfree (buf);
536 return PDC_SUCCESS;
537}
538
0fe7bf7b 539/* Return a printable representation of pthread STATE. */
c11d79f2
KB
540
541static char *
542state2str (pthdb_state_t state)
543{
544 switch (state)
545 {
edefbb7c
AC
546 case PST_IDLE:
547 /* i18n: Like "Thread-Id %d, [state] idle" */
548 return _("idle"); /* being created */
549 case PST_RUN:
550 /* i18n: Like "Thread-Id %d, [state] running" */
551 return _("running"); /* running */
552 case PST_SLEEP:
553 /* i18n: Like "Thread-Id %d, [state] sleeping" */
554 return _("sleeping"); /* awaiting an event */
555 case PST_READY:
556 /* i18n: Like "Thread-Id %d, [state] ready" */
557 return _("ready"); /* runnable */
558 case PST_TERM:
559 /* i18n: Like "Thread-Id %d, [state] finished" */
560 return _("finished"); /* awaiting a join/detach */
561 default:
562 /* i18n: Like "Thread-Id %d, [state] unknown" */
563 return _("unknown");
c11d79f2
KB
564 }
565}
566
0fe7bf7b 567/* qsort() comparison function for sorting pd_thread structs by pthid. */
c11d79f2
KB
568
569static int
570pcmp (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
77f0be4e
JB
577/* iterate_over_threads() callback for counting GDB threads.
578
579 Do not count the main thread (whose tid is zero). This matches
580 the list of threads provided by the pthreaddebug library, which
581 does not include that main thread either, and thus allows us
582 to compare the two lists. */
c11d79f2
KB
583
584static int
585giter_count (struct thread_info *thread, void *countp)
586{
77f0be4e
JB
587 if (PD_TID (thread->ptid))
588 (*(int *) countp)++;
c11d79f2
KB
589 return 0;
590}
591
77f0be4e
JB
592/* iterate_over_threads() callback for accumulating GDB thread pids.
593
594 Do not include the main thread (whose tid is zero). This matches
595 the list of threads provided by the pthreaddebug library, which
596 does not include that main thread either, and thus allows us
597 to compare the two lists. */
c11d79f2
KB
598
599static int
600giter_accum (struct thread_info *thread, void *bufp)
601{
77f0be4e
JB
602 if (PD_TID (thread->ptid))
603 {
604 **(struct thread_info ***) bufp = thread;
605 (*(struct thread_info ***) bufp)++;
606 }
c11d79f2
KB
607 return 0;
608}
609
610/* ptid comparison function */
0fe7bf7b 611
c11d79f2
KB
612static int
613ptid_cmp (ptid_t ptid1, ptid_t ptid2)
614{
615 int pid1, pid2;
616
617 if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2))
618 return -1;
619 else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2))
620 return 1;
621 else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2))
622 return -1;
623 else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2))
624 return 1;
625 else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2))
626 return -1;
627 else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2))
628 return 1;
629 else
630 return 0;
631}
632
0fe7bf7b 633/* qsort() comparison function for sorting thread_info structs by pid. */
c11d79f2
KB
634
635static int
636gcmp (const void *t1v, const void *t2v)
637{
638 struct thread_info *t1 = *(struct thread_info **) t1v;
639 struct thread_info *t2 = *(struct thread_info **) t2v;
640 return ptid_cmp (t1->ptid, t2->ptid);
641}
642
9ad7bec7
JB
643/* Search through the list of all kernel threads for the thread
644 that has stopped on a SIGTRAP signal, and return its TID.
645 Return 0 if none found. */
646
647static pthdb_tid_t
648get_signaled_thread (void)
649{
650 struct thrdsinfo64 thrinf;
651 pthdb_tid_t ktid = 0;
652 int result = 0;
653
9ad7bec7
JB
654 while (1)
655 {
656 if (getthrds (PIDGET (inferior_ptid), &thrinf,
657 sizeof (thrinf), &ktid, 1) != 1)
658 break;
659
660 if (thrinf.ti_cursig == SIGTRAP)
661 return thrinf.ti_tid;
662 }
663
664 /* Didn't find any thread stopped on a SIGTRAP signal. */
665 return 0;
666}
667
c11d79f2
KB
668/* Synchronize GDB's thread list with libpthdebug's.
669
670 There are some benefits of doing this every time the inferior stops:
671
0fe7bf7b
MS
672 - allows users to run thread-specific commands without needing to
673 run "info threads" first
c11d79f2
KB
674
675 - helps pthdb_tid_pthread() work properly (see "libpthdebug
676 peculiarities" at the top of this module)
677
0fe7bf7b
MS
678 - simplifies the demands placed on libpthdebug, which seems to
679 have difficulty with certain call patterns */
c11d79f2
KB
680
681static void
682sync_threadlists (void)
683{
684 int cmd, status, infpid;
685 int pcount, psize, pi, gcount, gi;
686 struct pd_thread *pbuf;
687 struct thread_info **gbuf, **g, *thread;
688 pthdb_pthread_t pdtid;
689 pthread_t pthid;
690 pthdb_tid_t tid;
c11d79f2 691
0fe7bf7b 692 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
c11d79f2
KB
693
694 pcount = 0;
695 psize = 1;
696 pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf);
697
698 for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT)
699 {
700 status = pthdb_pthread (pd_session, &pdtid, cmd);
701 if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD)
702 break;
703
704 status = pthdb_pthread_ptid (pd_session, pdtid, &pthid);
705 if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID)
706 continue;
707
708 if (pcount == psize)
709 {
710 psize *= 2;
0fe7bf7b
MS
711 pbuf = (struct pd_thread *) xrealloc (pbuf,
712 psize * sizeof *pbuf);
c11d79f2
KB
713 }
714 pbuf[pcount].pdtid = pdtid;
715 pbuf[pcount].pthid = pthid;
716 pcount++;
717 }
718
719 for (pi = 0; pi < pcount; pi++)
720 {
721 status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid);
722 if (status != PTHDB_SUCCESS)
723 tid = PTHDB_INVALID_TID;
724 pbuf[pi].tid = tid;
725 }
726
727 qsort (pbuf, pcount, sizeof *pbuf, pcmp);
728
0fe7bf7b 729 /* Accumulate an array of GDB threads sorted by pid. */
c11d79f2
KB
730
731 gcount = 0;
732 iterate_over_threads (giter_count, &gcount);
733 g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf);
734 iterate_over_threads (giter_accum, &g);
735 qsort (gbuf, gcount, sizeof *gbuf, gcmp);
736
0fe7bf7b 737 /* Apply differences between the two arrays to GDB's thread list. */
c11d79f2
KB
738
739 infpid = PIDGET (inferior_ptid);
740 for (pi = gi = 0; pi < pcount || gi < gcount;)
741 {
c11d79f2 742 if (pi == pcount)
c11d79f2 743 {
42cc437f 744 delete_thread (gbuf[gi]->ptid);
c11d79f2
KB
745 gi++;
746 }
42cc437f 747 else if (gi == gcount)
c11d79f2 748 {
42cc437f 749 thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid));
c11d79f2 750 thread->private = xmalloc (sizeof (struct private_thread_info));
42cc437f
KB
751 thread->private->pdtid = pbuf[pi].pdtid;
752 thread->private->tid = pbuf[pi].tid;
c11d79f2
KB
753 pi++;
754 }
42cc437f
KB
755 else
756 {
757 ptid_t pptid, gptid;
758 int cmp_result;
759
760 pptid = BUILD_THREAD (pbuf[pi].pthid, infpid);
761 gptid = gbuf[gi]->ptid;
762 pdtid = pbuf[pi].pdtid;
763 tid = pbuf[pi].tid;
c11d79f2 764
42cc437f
KB
765 cmp_result = ptid_cmp (pptid, gptid);
766
767 if (cmp_result == 0)
768 {
769 gbuf[gi]->private->pdtid = pdtid;
770 gbuf[gi]->private->tid = tid;
771 pi++;
772 gi++;
773 }
774 else if (cmp_result > 0)
775 {
776 delete_thread (gptid);
777 gi++;
778 }
779 else
780 {
781 thread = add_thread (pptid);
782 thread->private = xmalloc (sizeof (struct private_thread_info));
783 thread->private->pdtid = pdtid;
784 thread->private->tid = tid;
785 pi++;
786 }
787 }
c11d79f2
KB
788 }
789
790 xfree (pbuf);
791 xfree (gbuf);
792}
793
9ad7bec7
JB
794/* Iterate_over_threads() callback for locating a thread, using
795 the TID of its associated kernel thread. */
c11d79f2
KB
796
797static int
9ad7bec7 798iter_tid (struct thread_info *thread, void *tidp)
c11d79f2 799{
9ad7bec7 800 const pthdb_tid_t tid = *(pthdb_tid_t *)tidp;
c11d79f2 801
9ad7bec7 802 return (thread->private->tid == tid);
c11d79f2
KB
803}
804
0fe7bf7b
MS
805/* Synchronize libpthdebug's state with the inferior and with GDB,
806 generate a composite process/thread <pid> for the current thread,
807 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
c11d79f2
KB
808
809static ptid_t
810pd_update (int set_infpid)
811{
812 int status;
813 ptid_t ptid;
9ad7bec7
JB
814 pthdb_tid_t tid;
815 struct thread_info *thread = NULL;
c11d79f2
KB
816
817 if (!pd_active)
818 return inferior_ptid;
819
820 status = pthdb_session_update (pd_session);
821 if (status != PTHDB_SUCCESS)
822 return inferior_ptid;
823
824 sync_threadlists ();
825
0fe7bf7b 826 /* Define "current thread" as one that just received a trap signal. */
c11d79f2 827
9ad7bec7
JB
828 tid = get_signaled_thread ();
829 if (tid != 0)
830 thread = iterate_over_threads (iter_tid, &tid);
c11d79f2
KB
831 if (!thread)
832 ptid = inferior_ptid;
833 else
834 {
835 ptid = thread->ptid;
836 if (set_infpid)
837 inferior_ptid = ptid;
838 }
839 return ptid;
840}
841
0963b4bd 842/* Try to start debugging threads in the current process.
0fe7bf7b
MS
843 If successful and SET_INFPID, set inferior_ptid to reflect the
844 current thread. */
c11d79f2
KB
845
846static ptid_t
847pd_activate (int set_infpid)
848{
849 int status;
850
851 status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT,
0fe7bf7b
MS
852 PTHDB_FLAG_REGS, &pd_callbacks,
853 &pd_session);
c11d79f2
KB
854 if (status != PTHDB_SUCCESS)
855 {
856 return inferior_ptid;
857 }
858 pd_active = 1;
859 return pd_update (set_infpid);
860}
861
0fe7bf7b 862/* Undo the effects of pd_activate(). */
c11d79f2
KB
863
864static void
865pd_deactivate (void)
866{
867 if (!pd_active)
868 return;
869 pthdb_session_destroy (pd_session);
870
871 pid_to_prc (&inferior_ptid);
872 pd_active = 0;
873}
874
0fe7bf7b
MS
875/* An object file has just been loaded. Check whether the current
876 application is pthreaded, and if so, prepare for thread debugging. */
c11d79f2
KB
877
878static void
879pd_enable (void)
880{
881 int status;
882 char *stub_name;
883 struct minimal_symbol *ms;
884
0fe7bf7b 885 /* Don't initialize twice. */
c11d79f2
KB
886 if (pd_able)
887 return;
888
0fe7bf7b 889 /* Check application word size. */
a97b0ac8 890 arch64 = register_size (target_gdbarch, 0) == 8;
c11d79f2 891
0fe7bf7b 892 /* Check whether the application is pthreaded. */
c11d79f2 893 stub_name = NULL;
0fe7bf7b
MS
894 status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS,
895 &pd_callbacks, &stub_name);
f8bf5763
PM
896 if ((status != PTHDB_SUCCESS
897 && status != PTHDB_NOT_PTHREADED) || !stub_name)
c11d79f2
KB
898 return;
899
0fe7bf7b 900 /* Set a breakpoint on the returned stub function. */
c11d79f2
KB
901 if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL)))
902 return;
903 pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms);
a6d9a66e 904 if (!create_thread_event_breakpoint (target_gdbarch, pd_brk_addr))
c11d79f2
KB
905 return;
906
0fe7bf7b 907 /* Prepare for thread debugging. */
206d3d3c 908 push_target (&aix_thread_ops);
c11d79f2
KB
909 pd_able = 1;
910
0fe7bf7b
MS
911 /* If we're debugging a core file or an attached inferior, the
912 pthread library may already have been initialized, so try to
913 activate thread debugging. */
c11d79f2
KB
914 pd_activate (1);
915}
916
0fe7bf7b 917/* Undo the effects of pd_enable(). */
c11d79f2
KB
918
919static void
920pd_disable (void)
921{
922 if (!pd_able)
923 return;
924 if (pd_active)
925 pd_deactivate ();
926 pd_able = 0;
206d3d3c 927 unpush_target (&aix_thread_ops);
c11d79f2
KB
928}
929
06d3b283 930/* new_objfile observer callback.
c11d79f2 931
0fe7bf7b
MS
932 If OBJFILE is non-null, check whether a threaded application is
933 being debugged, and if so, prepare for thread debugging.
c11d79f2 934
0fe7bf7b 935 If OBJFILE is null, stop debugging threads. */
c11d79f2
KB
936
937static void
938new_objfile (struct objfile *objfile)
939{
940 if (objfile)
941 pd_enable ();
942 else
943 pd_disable ();
c11d79f2
KB
944}
945
0fe7bf7b 946/* Attach to process specified by ARGS. */
c11d79f2
KB
947
948static void
136d6dae 949aix_thread_attach (struct target_ops *ops, char *args, int from_tty)
c11d79f2 950{
d30acaa7
JB
951 struct target_ops *beneath = find_target_beneath (ops);
952
953 beneath->to_attach (beneath, args, from_tty);
c11d79f2
KB
954 pd_activate (1);
955}
956
206d3d3c 957/* Detach from the process attached to by aix_thread_attach(). */
c11d79f2
KB
958
959static void
136d6dae 960aix_thread_detach (struct target_ops *ops, char *args, int from_tty)
c11d79f2 961{
d30acaa7
JB
962 struct target_ops *beneath = find_target_beneath (ops);
963
6c0c456d 964 pd_disable ();
d30acaa7 965 beneath->to_detach (beneath, args, from_tty);
c11d79f2
KB
966}
967
968/* Tell the inferior process to continue running thread PID if != -1
0fe7bf7b 969 and all threads otherwise. */
c11d79f2
KB
970
971static void
c7660128
JB
972aix_thread_resume (struct target_ops *ops,
973 ptid_t ptid, int step, enum target_signal sig)
c11d79f2
KB
974{
975 struct thread_info *thread;
976 pthdb_tid_t tid[2];
977
978 if (!PD_TID (ptid))
14fa3751
KB
979 {
980 struct cleanup *cleanup = save_inferior_ptid ();
d30acaa7
JB
981 struct target_ops *beneath = find_target_beneath (ops);
982
14fa3751 983 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
d30acaa7 984 beneath->to_resume (beneath, ptid, step, sig);
14fa3751
KB
985 do_cleanups (cleanup);
986 }
c11d79f2
KB
987 else
988 {
e09875d4 989 thread = find_thread_ptid (ptid);
c11d79f2 990 if (!thread)
edefbb7c 991 error (_("aix-thread resume: unknown pthread %ld"),
0fe7bf7b 992 TIDGET (ptid));
c11d79f2
KB
993
994 tid[0] = thread->private->tid;
995 if (tid[0] == PTHDB_INVALID_TID)
edefbb7c 996 error (_("aix-thread resume: no tid for pthread %ld"),
0fe7bf7b 997 TIDGET (ptid));
c11d79f2
KB
998 tid[1] = 0;
999
1000 if (arch64)
0fe7bf7b 1001 ptrace64aix (PTT_CONTINUE, tid[0], 1,
ed1bd5f5 1002 target_signal_to_host (sig), (void *) tid);
c11d79f2
KB
1003 else
1004 ptrace32 (PTT_CONTINUE, tid[0], (int *) 1,
ed1bd5f5 1005 target_signal_to_host (sig), (void *) tid);
c11d79f2
KB
1006 }
1007}
1008
0fe7bf7b
MS
1009/* Wait for thread/process ID if != -1 or for any thread otherwise.
1010 If an error occurs, return -1, else return the pid of the stopped
1011 thread. */
c11d79f2
KB
1012
1013static ptid_t
117de6a9 1014aix_thread_wait (struct target_ops *ops,
8914d83b 1015 ptid_t ptid, struct target_waitstatus *status, int options)
c11d79f2 1016{
14fa3751 1017 struct cleanup *cleanup = save_inferior_ptid ();
d30acaa7 1018 struct target_ops *beneath = find_target_beneath (ops);
14fa3751 1019
c11d79f2 1020 pid_to_prc (&ptid);
14fa3751
KB
1021
1022 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
8914d83b 1023 ptid = beneath->to_wait (beneath, ptid, status, options);
14fa3751
KB
1024 do_cleanups (cleanup);
1025
c11d79f2
KB
1026 if (PIDGET (ptid) == -1)
1027 return pid_to_ptid (-1);
1028
0fe7bf7b 1029 /* Check whether libpthdebug might be ready to be initialized. */
515630c5
UW
1030 if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED
1031 && status->value.sig == TARGET_SIGNAL_TRAP)
1032 {
1033 struct regcache *regcache = get_thread_regcache (ptid);
1034 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1035
1036 if (regcache_read_pc (regcache)
1037 - gdbarch_decr_pc_after_break (gdbarch) == pd_brk_addr)
1038 return pd_activate (0);
1039 }
c11d79f2
KB
1040
1041 return pd_update (0);
1042}
1043
0fe7bf7b 1044/* Record that the 64-bit general-purpose registers contain VALS. */
c11d79f2
KB
1045
1046static void
647478e0 1047supply_gprs64 (struct regcache *regcache, uint64_t *vals)
c11d79f2 1048{
c7f30c7a 1049 struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
c11d79f2
KB
1050 int regno;
1051
063715bf 1052 for (regno = 0; regno < ppc_num_gprs; regno++)
647478e0 1053 regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + regno,
23a6d369 1054 (char *) (vals + regno));
c11d79f2
KB
1055}
1056
0fe7bf7b 1057/* Record that 32-bit register REGNO contains VAL. */
c11d79f2
KB
1058
1059static void
647478e0 1060supply_reg32 (struct regcache *regcache, int regno, uint32_t val)
c11d79f2 1061{
647478e0 1062 regcache_raw_supply (regcache, regno, (char *) &val);
c11d79f2
KB
1063}
1064
0fe7bf7b 1065/* Record that the floating-point registers contain VALS. */
c11d79f2
KB
1066
1067static void
647478e0 1068supply_fprs (struct regcache *regcache, double *vals)
c11d79f2 1069{
c7f30c7a
UW
1070 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1071 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
c11d79f2
KB
1072 int regno;
1073
383f0f5b
JB
1074 /* This function should never be called on architectures without
1075 floating-point registers. */
c7f30c7a 1076 gdb_assert (ppc_floating_point_unit_p (gdbarch));
383f0f5b 1077
063715bf 1078 for (regno = 0; regno < ppc_num_fprs; regno++)
647478e0 1079 regcache_raw_supply (regcache, regno + tdep->ppc_fp0_regnum,
23a6d369 1080 (char *) (vals + regno));
c11d79f2
KB
1081}
1082
f1a91342
KB
1083/* Predicate to test whether given register number is a "special" register. */
1084static int
9970f04b 1085special_register_p (struct gdbarch *gdbarch, int regno)
f1a91342 1086{
9970f04b 1087 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
f1a91342 1088
9970f04b 1089 return regno == gdbarch_pc_regnum (gdbarch)
f1a91342
KB
1090 || regno == tdep->ppc_ps_regnum
1091 || regno == tdep->ppc_cr_regnum
1092 || regno == tdep->ppc_lr_regnum
1093 || regno == tdep->ppc_ctr_regnum
1094 || regno == tdep->ppc_xer_regnum
383f0f5b 1095 || (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_regnum)
f1a91342
KB
1096 || (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum);
1097}
1098
1099
0fe7bf7b
MS
1100/* Record that the special registers contain the specified 64-bit and
1101 32-bit values. */
c11d79f2
KB
1102
1103static void
647478e0
UW
1104supply_sprs64 (struct regcache *regcache,
1105 uint64_t iar, uint64_t msr, uint32_t cr,
0e061eef
KB
1106 uint64_t lr, uint64_t ctr, uint32_t xer,
1107 uint32_t fpscr)
c11d79f2 1108{
c7f30c7a
UW
1109 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1110 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
f1a91342 1111
c7f30c7a 1112 regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
3e8c568d 1113 (char *) &iar);
647478e0
UW
1114 regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr);
1115 regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr);
1116 regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr);
1117 regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
1118 regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer);
383f0f5b 1119 if (tdep->ppc_fpscr_regnum >= 0)
647478e0 1120 regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum,
23a6d369 1121 (char *) &fpscr);
c11d79f2
KB
1122}
1123
0fe7bf7b
MS
1124/* Record that the special registers contain the specified 32-bit
1125 values. */
c11d79f2
KB
1126
1127static void
647478e0
UW
1128supply_sprs32 (struct regcache *regcache,
1129 uint32_t iar, uint32_t msr, uint32_t cr,
0e061eef
KB
1130 uint32_t lr, uint32_t ctr, uint32_t xer,
1131 uint32_t fpscr)
c11d79f2 1132{
c7f30c7a
UW
1133 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1134 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
f1a91342 1135
c7f30c7a 1136 regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
3e8c568d 1137 (char *) &iar);
647478e0
UW
1138 regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr);
1139 regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr);
1140 regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr);
1141 regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
1142 regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer);
383f0f5b 1143 if (tdep->ppc_fpscr_regnum >= 0)
647478e0 1144 regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum,
23a6d369 1145 (char *) &fpscr);
c11d79f2
KB
1146}
1147
1148/* Fetch all registers from pthread PDTID, which doesn't have a kernel
1149 thread.
1150
0fe7bf7b
MS
1151 There's no way to query a single register from a non-kernel
1152 pthread, so there's no need for a single-register version of this
1153 function. */
c11d79f2
KB
1154
1155static void
647478e0 1156fetch_regs_user_thread (struct regcache *regcache, pthdb_pthread_t pdtid)
c11d79f2 1157{
c7f30c7a
UW
1158 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1159 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
c11d79f2
KB
1160 int status, i;
1161 pthdb_context_t ctx;
1162
8e2c28d4 1163 if (debug_aix_thread)
206d3d3c
KB
1164 fprintf_unfiltered (gdb_stdlog,
1165 "fetch_regs_user_thread %lx\n", (long) pdtid);
c11d79f2
KB
1166 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1167 if (status != PTHDB_SUCCESS)
edefbb7c 1168 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
14fa3751 1169 pd_status2str (status));
c11d79f2 1170
0fe7bf7b 1171 /* General-purpose registers. */
c11d79f2
KB
1172
1173 if (arch64)
647478e0 1174 supply_gprs64 (regcache, ctx.gpr);
c11d79f2 1175 else
063715bf 1176 for (i = 0; i < ppc_num_gprs; i++)
647478e0 1177 supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, ctx.gpr[i]);
c11d79f2 1178
0fe7bf7b 1179 /* Floating-point registers. */
c11d79f2 1180
c7f30c7a 1181 if (ppc_floating_point_unit_p (gdbarch))
647478e0 1182 supply_fprs (regcache, ctx.fpr);
c11d79f2 1183
0fe7bf7b 1184 /* Special registers. */
c11d79f2
KB
1185
1186 if (arch64)
647478e0
UW
1187 supply_sprs64 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr,
1188 ctx.xer, ctx.fpscr);
c11d79f2 1189 else
647478e0
UW
1190 supply_sprs32 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr,
1191 ctx.xer, ctx.fpscr);
c11d79f2
KB
1192}
1193
0fe7bf7b
MS
1194/* Fetch register REGNO if != -1 or all registers otherwise from
1195 kernel thread TID.
c11d79f2 1196
0fe7bf7b
MS
1197 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1198 SPRs, but there's no way to query individual registers within those
1199 groups. Therefore, if REGNO != -1, this function fetches an entire
1200 group.
c11d79f2 1201
0fe7bf7b
MS
1202 Unfortunately, kernel thread register queries often fail with
1203 EPERM, indicating that the thread is in kernel space. This breaks
1204 backtraces of threads other than the current one. To make that
1205 breakage obvious without throwing an error to top level (which is
1206 bad e.g. during "info threads" output), zero registers that can't
1207 be retrieved. */
c11d79f2
KB
1208
1209static void
647478e0
UW
1210fetch_regs_kernel_thread (struct regcache *regcache, int regno,
1211 pthdb_tid_t tid)
c11d79f2 1212{
c7f30c7a
UW
1213 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1214 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
063715bf
JB
1215 uint64_t gprs64[ppc_num_gprs];
1216 uint32_t gprs32[ppc_num_gprs];
1217 double fprs[ppc_num_fprs];
c11d79f2
KB
1218 struct ptxsprs sprs64;
1219 struct ptsprs sprs32;
1220 int i;
1221
8e2c28d4
KB
1222 if (debug_aix_thread)
1223 fprintf_unfiltered (gdb_stdlog,
206d3d3c
KB
1224 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1225 (long) tid, regno, arch64);
c11d79f2 1226
0fe7bf7b 1227 /* General-purpose registers. */
daf6dc85
JB
1228 if (regno == -1
1229 || (tdep->ppc_gp0_regnum <= regno
1230 && regno < tdep->ppc_gp0_regnum + ppc_num_gprs))
c11d79f2
KB
1231 {
1232 if (arch64)
1233 {
0fe7bf7b
MS
1234 if (!ptrace64aix (PTT_READ_GPRS, tid,
1235 (unsigned long) gprs64, 0, NULL))
c11d79f2 1236 memset (gprs64, 0, sizeof (gprs64));
647478e0 1237 supply_gprs64 (regcache, gprs64);
c11d79f2
KB
1238 }
1239 else
1240 {
1241 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
1242 memset (gprs32, 0, sizeof (gprs32));
063715bf 1243 for (i = 0; i < ppc_num_gprs; i++)
647478e0 1244 supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, gprs32[i]);
c11d79f2
KB
1245 }
1246 }
1247
0fe7bf7b 1248 /* Floating-point registers. */
c11d79f2 1249
c7f30c7a 1250 if (ppc_floating_point_unit_p (gdbarch)
383f0f5b
JB
1251 && (regno == -1
1252 || (regno >= tdep->ppc_fp0_regnum
1253 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
c11d79f2 1254 {
ed1bd5f5 1255 if (!ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL))
c11d79f2 1256 memset (fprs, 0, sizeof (fprs));
647478e0 1257 supply_fprs (regcache, fprs);
c11d79f2
KB
1258 }
1259
0fe7bf7b 1260 /* Special-purpose registers. */
c11d79f2 1261
9970f04b 1262 if (regno == -1 || special_register_p (gdbarch, regno))
c11d79f2
KB
1263 {
1264 if (arch64)
1265 {
0fe7bf7b
MS
1266 if (!ptrace64aix (PTT_READ_SPRS, tid,
1267 (unsigned long) &sprs64, 0, NULL))
c11d79f2 1268 memset (&sprs64, 0, sizeof (sprs64));
647478e0
UW
1269 supply_sprs64 (regcache, sprs64.pt_iar, sprs64.pt_msr,
1270 sprs64.pt_cr, sprs64.pt_lr, sprs64.pt_ctr,
1271 sprs64.pt_xer, sprs64.pt_fpscr);
c11d79f2
KB
1272 }
1273 else
1274 {
c7f30c7a 1275 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
f1a91342 1276
c11d79f2
KB
1277 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
1278 memset (&sprs32, 0, sizeof (sprs32));
647478e0 1279 supply_sprs32 (regcache, sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
0e061eef
KB
1280 sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer,
1281 sprs32.pt_fpscr);
c11d79f2 1282
f1a91342 1283 if (tdep->ppc_mq_regnum >= 0)
647478e0 1284 regcache_raw_supply (regcache, tdep->ppc_mq_regnum,
23a6d369 1285 (char *) &sprs32.pt_mq);
c11d79f2
KB
1286 }
1287 }
1288}
1289
1290/* Fetch register REGNO if != -1 or all registers otherwise in the
0fe7bf7b 1291 thread/process specified by inferior_ptid. */
c11d79f2
KB
1292
1293static void
c7660128
JB
1294aix_thread_fetch_registers (struct target_ops *ops,
1295 struct regcache *regcache, int regno)
c11d79f2
KB
1296{
1297 struct thread_info *thread;
1298 pthdb_tid_t tid;
d30acaa7 1299 struct target_ops *beneath = find_target_beneath (ops);
c11d79f2
KB
1300
1301 if (!PD_TID (inferior_ptid))
d30acaa7 1302 beneath->to_fetch_registers (beneath, regcache, regno);
c11d79f2
KB
1303 else
1304 {
e09875d4 1305 thread = find_thread_ptid (inferior_ptid);
c11d79f2
KB
1306 tid = thread->private->tid;
1307
1308 if (tid == PTHDB_INVALID_TID)
56be3814 1309 fetch_regs_user_thread (regcache, thread->private->pdtid);
c11d79f2 1310 else
56be3814 1311 fetch_regs_kernel_thread (regcache, regno, tid);
c11d79f2
KB
1312 }
1313}
1314
61c5da0b
KB
1315/* Store the gp registers into an array of uint32_t or uint64_t. */
1316
1317static void
647478e0 1318fill_gprs64 (const struct regcache *regcache, uint64_t *vals)
61c5da0b 1319{
c7f30c7a 1320 struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
61c5da0b
KB
1321 int regno;
1322
daf6dc85 1323 for (regno = 0; regno < ppc_num_gprs; regno++)
672c9795
YQ
1324 if (REG_VALID == regcache_register_status (regcache,
1325 tdep->ppc_gp0_regnum + regno))
647478e0 1326 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno,
822c9732 1327 vals + regno);
61c5da0b
KB
1328}
1329
1330static void
647478e0 1331fill_gprs32 (const struct regcache *regcache, uint32_t *vals)
61c5da0b 1332{
c7f30c7a 1333 struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
61c5da0b
KB
1334 int regno;
1335
daf6dc85 1336 for (regno = 0; regno < ppc_num_gprs; regno++)
672c9795
YQ
1337 if (REG_VALID == regcache_register_status (regcache,
1338 tdep->ppc_gp0_regnum + regno))
647478e0 1339 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno,
822c9732 1340 vals + regno);
61c5da0b
KB
1341}
1342
1343/* Store the floating point registers into a double array. */
1344static void
647478e0 1345fill_fprs (const struct regcache *regcache, double *vals)
61c5da0b 1346{
c7f30c7a
UW
1347 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1348 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
61c5da0b
KB
1349 int regno;
1350
383f0f5b
JB
1351 /* This function should never be called on architectures without
1352 floating-point registers. */
c7f30c7a 1353 gdb_assert (ppc_floating_point_unit_p (gdbarch));
383f0f5b 1354
366f009f
JB
1355 for (regno = tdep->ppc_fp0_regnum;
1356 regno < tdep->ppc_fp0_regnum + ppc_num_fprs;
1357 regno++)
672c9795 1358 if (REG_VALID == regcache_register_status (regcache, regno))
647478e0 1359 regcache_raw_collect (regcache, regno, vals + regno);
61c5da0b
KB
1360}
1361
c11d79f2 1362/* Store the special registers into the specified 64-bit and 32-bit
0fe7bf7b 1363 locations. */
c11d79f2
KB
1364
1365static void
647478e0
UW
1366fill_sprs64 (const struct regcache *regcache,
1367 uint64_t *iar, uint64_t *msr, uint32_t *cr,
0e061eef
KB
1368 uint64_t *lr, uint64_t *ctr, uint32_t *xer,
1369 uint32_t *fpscr)
c11d79f2 1370{
c7f30c7a
UW
1371 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1372 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
f1a91342
KB
1373
1374 /* Verify that the size of the size of the IAR buffer is the
1375 same as the raw size of the PC (in the register cache). If
1376 they're not, then either GDB has been built incorrectly, or
1377 there's some other kind of internal error. To be really safe,
1378 we should check all of the sizes. */
3e8c568d 1379 gdb_assert (sizeof (*iar) == register_size
c7f30c7a 1380 (gdbarch, gdbarch_pc_regnum (gdbarch)));
f1a91342 1381
672c9795
YQ
1382 if (REG_VALID == regcache_register_status (regcache,
1383 gdbarch_pc_regnum (gdbarch)))
c7f30c7a 1384 regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), iar);
672c9795 1385 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ps_regnum))
647478e0 1386 regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr);
672c9795 1387 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_cr_regnum))
647478e0 1388 regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr);
672c9795 1389 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_lr_regnum))
647478e0 1390 regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr);
672c9795 1391 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ctr_regnum))
647478e0 1392 regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr);
672c9795 1393 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_xer_regnum))
647478e0 1394 regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer);
383f0f5b 1395 if (tdep->ppc_fpscr_regnum >= 0
672c9795
YQ
1396 && REG_VALID == regcache_register_status (regcache,
1397 tdep->ppc_fpscr_regnum))
647478e0 1398 regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr);
61c5da0b
KB
1399}
1400
1401static void
647478e0
UW
1402fill_sprs32 (const struct regcache *regcache,
1403 uint32_t *iar, uint32_t *msr, uint32_t *cr,
0d16ee5d
UW
1404 uint32_t *lr, uint32_t *ctr, uint32_t *xer,
1405 uint32_t *fpscr)
61c5da0b 1406{
c7f30c7a
UW
1407 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1408 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
f1a91342
KB
1409
1410 /* Verify that the size of the size of the IAR buffer is the
1411 same as the raw size of the PC (in the register cache). If
1412 they're not, then either GDB has been built incorrectly, or
1413 there's some other kind of internal error. To be really safe,
0d16ee5d 1414 we should check all of the sizes. */
c7f30c7a
UW
1415 gdb_assert (sizeof (*iar) == register_size (gdbarch,
1416 gdbarch_pc_regnum (gdbarch)));
f1a91342 1417
672c9795
YQ
1418 if (REG_VALID == regcache_register_status (regcache,
1419 gdbarch_pc_regnum (gdbarch)))
c7f30c7a 1420 regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), iar);
672c9795 1421 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ps_regnum))
647478e0 1422 regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr);
672c9795 1423 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_cr_regnum))
647478e0 1424 regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr);
672c9795 1425 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_lr_regnum))
647478e0 1426 regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr);
672c9795 1427 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ctr_regnum))
647478e0 1428 regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr);
672c9795 1429 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_xer_regnum))
647478e0 1430 regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer);
383f0f5b 1431 if (tdep->ppc_fpscr_regnum >= 0
672c9795 1432 && REG_VALID == regcache_register_status (regcache, tdep->ppc_fpscr_regnum))
647478e0 1433 regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr);
c11d79f2
KB
1434}
1435
1436/* Store all registers into pthread PDTID, which doesn't have a kernel
1437 thread.
1438
0fe7bf7b
MS
1439 It's possible to store a single register into a non-kernel pthread,
1440 but I doubt it's worth the effort. */
c11d79f2
KB
1441
1442static void
647478e0 1443store_regs_user_thread (const struct regcache *regcache, pthdb_pthread_t pdtid)
c11d79f2 1444{
c7f30c7a
UW
1445 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1446 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
c11d79f2
KB
1447 int status, i;
1448 pthdb_context_t ctx;
61c5da0b
KB
1449 uint32_t int32;
1450 uint64_t int64;
1451 double dbl;
c11d79f2 1452
8e2c28d4 1453 if (debug_aix_thread)
0fe7bf7b 1454 fprintf_unfiltered (gdb_stdlog,
206d3d3c 1455 "store_regs_user_thread %lx\n", (long) pdtid);
c11d79f2 1456
0fe7bf7b
MS
1457 /* Retrieve the thread's current context for its non-register
1458 values. */
c11d79f2
KB
1459 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1460 if (status != PTHDB_SUCCESS)
edefbb7c 1461 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
14fa3751 1462 pd_status2str (status));
c11d79f2 1463
61c5da0b 1464 /* Collect general-purpose register values from the regcache. */
c11d79f2 1465
063715bf 1466 for (i = 0; i < ppc_num_gprs; i++)
672c9795
YQ
1467 if (REG_VALID == regcache_register_status (regcache,
1468 tdep->ppc_gp0_regnum + i))
cbe92db4
KB
1469 {
1470 if (arch64)
1471 {
647478e0 1472 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i,
822c9732 1473 (void *) &int64);
cbe92db4
KB
1474 ctx.gpr[i] = int64;
1475 }
1476 else
1477 {
647478e0 1478 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i,
822c9732 1479 (void *) &int32);
cbe92db4
KB
1480 ctx.gpr[i] = int32;
1481 }
1482 }
c11d79f2 1483
61c5da0b 1484 /* Collect floating-point register values from the regcache. */
c7f30c7a 1485 if (ppc_floating_point_unit_p (gdbarch))
647478e0 1486 fill_fprs (regcache, ctx.fpr);
c11d79f2 1487
61c5da0b
KB
1488 /* Special registers (always kept in ctx as 64 bits). */
1489 if (arch64)
1490 {
647478e0
UW
1491 fill_sprs64 (regcache, &ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr,
1492 &ctx.xer, &ctx.fpscr);
61c5da0b
KB
1493 }
1494 else
1495 {
1496 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
0d16ee5d
UW
1497 Solution: use 32-bit temp variables. */
1498 uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
1499 tmp_fpscr;
61c5da0b 1500
647478e0
UW
1501 fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr,
1502 &tmp_xer, &tmp_fpscr);
672c9795
YQ
1503 if (REG_VALID == regcache_register_status (regcache,
1504 gdbarch_pc_regnum (gdbarch)))
cbe92db4 1505 ctx.iar = tmp_iar;
672c9795 1506 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ps_regnum))
cbe92db4 1507 ctx.msr = tmp_msr;
672c9795 1508 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_cr_regnum))
cbe92db4 1509 ctx.cr = tmp_cr;
672c9795 1510 if (REG_VALID == regcache_register_status (regcache, tdep->ppc_lr_regnum))
cbe92db4 1511 ctx.lr = tmp_lr;
672c9795
YQ
1512 if (REG_VALID == regcache_register_status (regcache,
1513 tdep->ppc_ctr_regnum))
cbe92db4 1514 ctx.ctr = tmp_ctr;
672c9795
YQ
1515 if (REG_VALID == regcache_register_status (regcache,
1516 tdep->ppc_xer_regnum))
cbe92db4 1517 ctx.xer = tmp_xer;
672c9795
YQ
1518 if (REG_VALID == regcache_register_status (regcache,
1519 tdep->ppc_xer_regnum))
0e061eef 1520 ctx.fpscr = tmp_fpscr;
61c5da0b 1521 }
c11d79f2
KB
1522
1523 status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx);
1524 if (status != PTHDB_SUCCESS)
0963b4bd
MS
1525 error (_("aix-thread: store_registers: "
1526 "pthdb_pthread_setcontext returned %s"),
14fa3751 1527 pd_status2str (status));
c11d79f2
KB
1528}
1529
0fe7bf7b
MS
1530/* Store register REGNO if != -1 or all registers otherwise into
1531 kernel thread TID.
c11d79f2 1532
0fe7bf7b
MS
1533 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1534 SPRs, but there's no way to set individual registers within those
1535 groups. Therefore, if REGNO != -1, this function stores an entire
1536 group. */
c11d79f2
KB
1537
1538static void
647478e0
UW
1539store_regs_kernel_thread (const struct regcache *regcache, int regno,
1540 pthdb_tid_t tid)
c11d79f2 1541{
c7f30c7a
UW
1542 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1543 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
063715bf
JB
1544 uint64_t gprs64[ppc_num_gprs];
1545 uint32_t gprs32[ppc_num_gprs];
1546 double fprs[ppc_num_fprs];
c11d79f2 1547 struct ptxsprs sprs64;
61c5da0b
KB
1548 struct ptsprs sprs32;
1549 int i;
c11d79f2 1550
8e2c28d4 1551 if (debug_aix_thread)
206d3d3c
KB
1552 fprintf_unfiltered (gdb_stdlog,
1553 "store_regs_kernel_thread tid=%lx regno=%d\n",
1554 (long) tid, regno);
c11d79f2 1555
0fe7bf7b 1556 /* General-purpose registers. */
daf6dc85
JB
1557 if (regno == -1
1558 || (tdep->ppc_gp0_regnum <= regno
1559 && regno < tdep->ppc_gp0_regnum + ppc_num_fprs))
c11d79f2 1560 {
c11d79f2 1561 if (arch64)
61c5da0b 1562 {
cbe92db4
KB
1563 /* Pre-fetch: some regs may not be in the cache. */
1564 ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL);
647478e0 1565 fill_gprs64 (regcache, gprs64);
61c5da0b
KB
1566 ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1567 }
c11d79f2 1568 else
61c5da0b 1569 {
cbe92db4
KB
1570 /* Pre-fetch: some regs may not be in the cache. */
1571 ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL);
647478e0 1572 fill_gprs32 (regcache, gprs32);
61c5da0b
KB
1573 ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL);
1574 }
c11d79f2
KB
1575 }
1576
0fe7bf7b 1577 /* Floating-point registers. */
c11d79f2 1578
c7f30c7a 1579 if (ppc_floating_point_unit_p (gdbarch)
383f0f5b
JB
1580 && (regno == -1
1581 || (regno >= tdep->ppc_fp0_regnum
1582 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
c11d79f2 1583 {
cbe92db4 1584 /* Pre-fetch: some regs may not be in the cache. */
ed1bd5f5 1585 ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL);
647478e0 1586 fill_fprs (regcache, fprs);
ed1bd5f5 1587 ptrace32 (PTT_WRITE_FPRS, tid, (void *) fprs, 0, NULL);
c11d79f2
KB
1588 }
1589
0fe7bf7b 1590 /* Special-purpose registers. */
c11d79f2 1591
9970f04b 1592 if (regno == -1 || special_register_p (gdbarch, regno))
c11d79f2
KB
1593 {
1594 if (arch64)
1595 {
cbe92db4 1596 /* Pre-fetch: some registers won't be in the cache. */
0fe7bf7b
MS
1597 ptrace64aix (PTT_READ_SPRS, tid,
1598 (unsigned long) &sprs64, 0, NULL);
647478e0
UW
1599 fill_sprs64 (regcache, &sprs64.pt_iar, &sprs64.pt_msr,
1600 &sprs64.pt_cr, &sprs64.pt_lr, &sprs64.pt_ctr,
1601 &sprs64.pt_xer, &sprs64.pt_fpscr);
0fe7bf7b
MS
1602 ptrace64aix (PTT_WRITE_SPRS, tid,
1603 (unsigned long) &sprs64, 0, NULL);
c11d79f2
KB
1604 }
1605 else
1606 {
0d16ee5d
UW
1607 /* The contents of "struct ptspr" were declared as "unsigned
1608 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1609 Use temporaries to work around this problem. Also, add an
1610 assert here to make sure we fail if the system header files
1611 use "unsigned long", and the size of that type is not what
1612 the headers expect. */
1613 uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
1614 tmp_fpscr;
1615
1616 gdb_assert (sizeof (sprs32.pt_iar) == 4);
1617
cbe92db4 1618 /* Pre-fetch: some registers won't be in the cache. */
c11d79f2
KB
1619 ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL);
1620
647478e0
UW
1621 fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr,
1622 &tmp_ctr, &tmp_xer, &tmp_fpscr);
0d16ee5d
UW
1623
1624 sprs32.pt_iar = tmp_iar;
1625 sprs32.pt_msr = tmp_msr;
1626 sprs32.pt_cr = tmp_cr;
1627 sprs32.pt_lr = tmp_lr;
1628 sprs32.pt_ctr = tmp_ctr;
1629 sprs32.pt_xer = tmp_xer;
1630 sprs32.pt_fpscr = tmp_fpscr;
c11d79f2 1631
f1a91342 1632 if (tdep->ppc_mq_regnum >= 0)
672c9795
YQ
1633 if (REG_VALID == regcache_register_status (regcache,
1634 tdep->ppc_mq_regnum))
647478e0 1635 regcache_raw_collect (regcache, tdep->ppc_mq_regnum,
822c9732 1636 &sprs32.pt_mq);
c11d79f2
KB
1637
1638 ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL);
1639 }
1640 }
1641}
1642
0fe7bf7b
MS
1643/* Store gdb's current view of the register set into the
1644 thread/process specified by inferior_ptid. */
c11d79f2
KB
1645
1646static void
c7660128
JB
1647aix_thread_store_registers (struct target_ops *ops,
1648 struct regcache *regcache, int regno)
c11d79f2
KB
1649{
1650 struct thread_info *thread;
1651 pthdb_tid_t tid;
d30acaa7 1652 struct target_ops *beneath = find_target_beneath (ops);
c11d79f2
KB
1653
1654 if (!PD_TID (inferior_ptid))
d30acaa7 1655 beneath->to_store_registers (beneath, regcache, regno);
c11d79f2
KB
1656 else
1657 {
e09875d4 1658 thread = find_thread_ptid (inferior_ptid);
c11d79f2
KB
1659 tid = thread->private->tid;
1660
1661 if (tid == PTHDB_INVALID_TID)
56be3814 1662 store_regs_user_thread (regcache, thread->private->pdtid);
c11d79f2 1663 else
56be3814 1664 store_regs_kernel_thread (regcache, regno, tid);
c11d79f2
KB
1665 }
1666}
1667
037a727e
UW
1668/* Attempt a transfer all LEN bytes starting at OFFSET between the
1669 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1670 Return the number of bytes actually transferred. */
1671
1672static LONGEST
1673aix_thread_xfer_partial (struct target_ops *ops, enum target_object object,
1674 const char *annex, gdb_byte *readbuf,
0963b4bd
MS
1675 const gdb_byte *writebuf,
1676 ULONGEST offset, LONGEST len)
c11d79f2 1677{
037a727e
UW
1678 struct cleanup *old_chain = save_inferior_ptid ();
1679 LONGEST xfer;
d30acaa7 1680 struct target_ops *beneath = find_target_beneath (ops);
14fa3751
KB
1681
1682 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
d30acaa7
JB
1683 xfer = beneath->to_xfer_partial (beneath, object, annex,
1684 readbuf, writebuf, offset, len);
c11d79f2 1685
037a727e
UW
1686 do_cleanups (old_chain);
1687 return xfer;
c11d79f2
KB
1688}
1689
0fe7bf7b 1690/* Clean up after the inferior exits. */
c11d79f2
KB
1691
1692static void
136d6dae 1693aix_thread_mourn_inferior (struct target_ops *ops)
c11d79f2 1694{
d30acaa7
JB
1695 struct target_ops *beneath = find_target_beneath (ops);
1696
c11d79f2 1697 pd_deactivate ();
d30acaa7 1698 beneath->to_mourn_inferior (beneath);
c11d79f2
KB
1699}
1700
0fe7bf7b 1701/* Return whether thread PID is still valid. */
c11d79f2
KB
1702
1703static int
c7660128 1704aix_thread_thread_alive (struct target_ops *ops, ptid_t ptid)
c11d79f2 1705{
7fc0c7b5 1706 struct target_ops *beneath = find_target_beneath (ops);
d30acaa7 1707
c11d79f2 1708 if (!PD_TID (ptid))
d30acaa7 1709 return beneath->to_thread_alive (beneath, ptid);
c11d79f2 1710
0fe7bf7b
MS
1711 /* We update the thread list every time the child stops, so all
1712 valid threads should be in the thread list. */
c11d79f2
KB
1713 return in_thread_list (ptid);
1714}
1715
0fe7bf7b
MS
1716/* Return a printable representation of composite PID for use in
1717 "info threads" output. */
c11d79f2
KB
1718
1719static char *
117de6a9 1720aix_thread_pid_to_str (struct target_ops *ops, ptid_t ptid)
c11d79f2
KB
1721{
1722 static char *ret = NULL;
7fc0c7b5 1723 struct target_ops *beneath = find_target_beneath (ops);
c11d79f2
KB
1724
1725 if (!PD_TID (ptid))
d30acaa7 1726 return beneath->to_pid_to_str (beneath, ptid);
c11d79f2
KB
1727
1728 /* Free previous return value; a new one will be allocated by
b435e160 1729 xstrprintf(). */
c11d79f2
KB
1730 xfree (ret);
1731
edefbb7c 1732 ret = xstrprintf (_("Thread %ld"), ptid_get_tid (ptid));
c11d79f2
KB
1733 return ret;
1734}
1735
0fe7bf7b
MS
1736/* Return a printable representation of extra information about
1737 THREAD, for use in "info threads" output. */
c11d79f2
KB
1738
1739static char *
206d3d3c 1740aix_thread_extra_thread_info (struct thread_info *thread)
c11d79f2
KB
1741{
1742 struct ui_file *buf;
1743 int status;
1744 pthdb_pthread_t pdtid;
1745 pthdb_tid_t tid;
1746 pthdb_state_t state;
1747 pthdb_suspendstate_t suspendstate;
1748 pthdb_detachstate_t detachstate;
1749 int cancelpend;
c11d79f2
KB
1750 static char *ret = NULL;
1751
1752 if (!PD_TID (thread->ptid))
1753 return NULL;
1754
1755 buf = mem_fileopen ();
1756
1757 pdtid = thread->private->pdtid;
1758 tid = thread->private->tid;
1759
1760 if (tid != PTHDB_INVALID_TID)
edefbb7c 1761 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
0d16ee5d 1762 fprintf_unfiltered (buf, _("tid %d"), (int)tid);
c11d79f2
KB
1763
1764 status = pthdb_pthread_state (pd_session, pdtid, &state);
1765 if (status != PTHDB_SUCCESS)
1766 state = PST_NOTSUP;
1767 fprintf_unfiltered (buf, ", %s", state2str (state));
1768
0fe7bf7b
MS
1769 status = pthdb_pthread_suspendstate (pd_session, pdtid,
1770 &suspendstate);
c11d79f2 1771 if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED)
edefbb7c
AC
1772 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1773 fprintf_unfiltered (buf, _(", suspended"));
c11d79f2 1774
0fe7bf7b
MS
1775 status = pthdb_pthread_detachstate (pd_session, pdtid,
1776 &detachstate);
c11d79f2 1777 if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED)
edefbb7c
AC
1778 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1779 fprintf_unfiltered (buf, _(", detached"));
c11d79f2
KB
1780
1781 pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend);
1782 if (status == PTHDB_SUCCESS && cancelpend)
edefbb7c
AC
1783 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1784 fprintf_unfiltered (buf, _(", cancel pending"));
c11d79f2
KB
1785
1786 ui_file_write (buf, "", 1);
1787
1788 xfree (ret); /* Free old buffer. */
1789
759ef836 1790 ret = ui_file_xstrdup (buf, NULL);
c11d79f2
KB
1791 ui_file_delete (buf);
1792
1793 return ret;
1794}
1795
c7660128
JB
1796static ptid_t
1797aix_thread_get_ada_task_ptid (long lwp, long thread)
1798{
1799 return ptid_build (ptid_get_pid (inferior_ptid), 0, thread);
1800}
1801
206d3d3c 1802/* Initialize target aix_thread_ops. */
c11d79f2
KB
1803
1804static void
206d3d3c 1805init_aix_thread_ops (void)
c11d79f2 1806{
783425fc
PA
1807 aix_thread_ops.to_shortname = "aix-threads";
1808 aix_thread_ops.to_longname = _("AIX pthread support");
1809 aix_thread_ops.to_doc = _("AIX pthread support");
1810
1811 aix_thread_ops.to_attach = aix_thread_attach;
1812 aix_thread_ops.to_detach = aix_thread_detach;
1813 aix_thread_ops.to_resume = aix_thread_resume;
1814 aix_thread_ops.to_wait = aix_thread_wait;
1815 aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers;
1816 aix_thread_ops.to_store_registers = aix_thread_store_registers;
1817 aix_thread_ops.to_xfer_partial = aix_thread_xfer_partial;
206d3d3c 1818 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
0fe7bf7b 1819 debugging when the inferior reaches pd_brk_addr. */
783425fc
PA
1820 aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior;
1821 aix_thread_ops.to_thread_alive = aix_thread_thread_alive;
1822 aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str;
1823 aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info;
1824 aix_thread_ops.to_get_ada_task_ptid = aix_thread_get_ada_task_ptid;
1825 aix_thread_ops.to_stratum = thread_stratum;
1826 aix_thread_ops.to_magic = OPS_MAGIC;
c11d79f2
KB
1827}
1828
1829/* Module startup initialization function, automagically called by
0fe7bf7b 1830 init.c. */
c11d79f2 1831
e1aca11e
JB
1832void _initialize_aix_thread (void);
1833
c11d79f2
KB
1834void
1835_initialize_aix_thread (void)
1836{
206d3d3c
KB
1837 init_aix_thread_ops ();
1838 add_target (&aix_thread_ops);
c11d79f2 1839
0fe7bf7b 1840 /* Notice when object files get loaded and unloaded. */
06d3b283 1841 observer_attach_new_objfile (new_objfile);
8e2c28d4 1842
577b7047 1843 add_setshow_boolean_cmd ("aix-thread", class_maintenance, &debug_aix_thread,
0963b4bd
MS
1844 _("Set debugging of AIX thread module."),
1845 _("Show debugging of AIX thread module."),
1846 _("Enables debugging output (used to debug GDB)."),
1847 NULL, NULL,
1848 /* FIXME: i18n: Debugging of AIX thread
1849 module is \"%d\". */
1850 &setdebuglist, &showdebuglist);
c11d79f2 1851}
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