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c906108c 1/* Target-vector operations for controlling win32 child processes, for GDB.
0a65a603 2
281b533b 3 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
33605d39 4 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
0a65a603 5
e6433c28 6 Contributed by Cygnus Solutions, A Red Hat Company.
c906108c
SS		 7
8 This file is part of GDB.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
a9762ec7 12 the Free Software Foundation; either version 3 of the License, or
c906108c
SS		 13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
a9762ec7 16 but WITHOUT ANY WARRANTY; without even the implied warranty of
c906108c
SS		 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
a9762ec7 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
c906108c 22
dfe7f3ac 23/* Originally by Steve Chamberlain, sac@cygnus.com */
c906108c 24
c906108c
SS		 25#include "defs.h"
26#include "frame.h" /* required by inferior.h */
27#include "inferior.h"
28#include "target.h"
60250e8b 29#include "exceptions.h"
c906108c
SS		 30#include "gdbcore.h"
31#include "command.h"
fa58ee11 32#include "completer.h"
4e052eda 33#include "regcache.h"
2a3d5645 34#include "top.h"
403d9909
CF		 35#include <signal.h>
36#include <sys/types.h>
37#include <fcntl.h>
38#include <stdlib.h>
39#include <windows.h>
40#include <imagehlp.h>
10325bc5 41#ifdef __CYGWIN__
403d9909 42#include <sys/cygwin.h>
10325bc5 43#endif
a244bdca 44#include <signal.h>
c906108c
SS		 45
46#include "buildsym.h"
47#include "symfile.h"
48#include "objfiles.h"
de1b3c3d 49#include "gdb_obstack.h"
c906108c
SS		 50#include "gdb_string.h"
51#include "gdbthread.h"
52#include "gdbcmd.h"
53#include <sys/param.h>
c2d11a7d 54#include <unistd.h>
4646aa9d 55#include "exec.h"
3ee6f623 56#include "solist.h"
3cb8e7f6 57#include "solib.h"
de1b3c3d 58#include "xml-support.h"
c906108c 59
6c7de422
MK		 60#include "i386-tdep.h"
61#include "i387-tdep.h"
62
de1b3c3d
PA		 63#include "i386-cygwin-tdep.h"
64
3ee6f623 65static struct target_ops win32_ops;
3ee6f623 66
10325bc5 67#ifdef __CYGWIN__
a244bdca
CF		 68/* The starting and ending address of the cygwin1.dll text segment. */
69static bfd_vma cygwin_load_start;
70static bfd_vma cygwin_load_end;
10325bc5 71#endif
a244bdca
CF		 72
73static int have_saved_context; /* True if we've saved context from a cygwin signal. */
74static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */
75
7a292a7a
SS		 76/* If we're not using the old Cygwin header file set, define the
77 following which never should have been in the generic Win32 API
78 headers in the first place since they were our own invention... */
79#ifndef _GNU_H_WINDOWS_H
9d3789f7 80enum
8e860359
CF		 81 {
82 FLAG_TRACE_BIT = 0x100,
83 CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
84 };
7a292a7a 85#endif
8e860359 86#include <psapi.h>
7a292a7a 87
fa4ba8da
PM		 88#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
89 | CONTEXT_EXTENDED_REGISTERS
97da3b20 90
fa4ba8da 91static unsigned dr[8];
87a45c96
CF		 92static int debug_registers_changed;
93static int debug_registers_used;
6537bb24 94#define DR6_CLEAR_VALUE 0xffff0ff0
97da3b20 95
c906108c
SS		 96/* The string sent by cygwin when it processes a signal.
97 FIXME: This should be in a cygwin include file. */
3929abe9
CF		 98#ifndef _CYGWIN_SIGNAL_STRING
99#define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
100#endif
c906108c 101
29fe111d 102#define CHECK(x) check (x, __FILE__,__LINE__)
dfe7f3ac 103#define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
4e52d31c
PM		 104#define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
105#define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
106#define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
c906108c 107
f9c72d52 108static void win32_stop (ptid_t);
3ee6f623
CF		 109static int win32_win32_thread_alive (ptid_t);
110static void win32_kill_inferior (void);
c906108c 111
7393af7c
PM		 112static enum target_signal last_sig = TARGET_SIGNAL_0;
113/* Set if a signal was received from the debugged process */
114
c906108c 115/* Thread information structure used to track information that is
6537bb24 116 not available in gdb's thread structure. */
c906108c 117typedef struct thread_info_struct
c5aa993b
JM		 118 {
119 struct thread_info_struct *next;
120 DWORD id;
121 HANDLE h;
122 char *name;
6537bb24 123 int suspended;
3ade5333 124 int reload_context;
c5aa993b 125 CONTEXT context;
c2d11a7d 126 STACKFRAME sf;
8e860359
CF		 127 }
128thread_info;
c2d11a7d 129
29fe111d 130static thread_info thread_head;
c906108c 131
c906108c
SS		 132/* The process and thread handles for the above context. */
133
134static DEBUG_EVENT current_event; /* The current debug event from
135 WaitForDebugEvent */
136static HANDLE current_process_handle; /* Currently executing process */
137static thread_info *current_thread; /* Info on currently selected thread */
349b409f 138static DWORD main_thread_id; /* Thread ID of the main thread */
c906108c
SS		 139
140/* Counts of things. */
141static int exception_count = 0;
142static int event_count = 0;
dfe7f3ac 143static int saw_create;
bf25528d 144static int open_process_used = 0;
c906108c
SS		 145
146/* User options. */
147static int new_console = 0;
10325bc5 148#ifdef __CYGWIN__
09280ddf 149static int cygwin_exceptions = 0;
10325bc5 150#endif
c2d11a7d 151static int new_group = 1;
dfe7f3ac
CF		 152static int debug_exec = 0; /* show execution */
153static int debug_events = 0; /* show events from kernel */
154static int debug_memory = 0; /* show target memory accesses */
c906108c 155static int debug_exceptions = 0; /* show target exceptions */
dfe7f3ac
CF		 156static int useshell = 0; /* use shell for subprocesses */
157
c906108c
SS		 158/* This vector maps GDB's idea of a register's number into an address
159 in the win32 exception context vector.
160
161 It also contains the bit mask needed to load the register in question.
162
163 One day we could read a reg, we could inspect the context we
164 already have loaded, if it doesn't have the bit set that we need,
165 we read that set of registers in using GetThreadContext. If the
166 context already contains what we need, we just unpack it. Then to
167 write a register, first we have to ensure that the context contains
168 the other regs of the group, and then we copy the info in and set
169 out bit. */
170
171#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
172static const int mappings[] =
173{
c5aa993b
JM		 174 context_offset (Eax),
175 context_offset (Ecx),
176 context_offset (Edx),
177 context_offset (Ebx),
178 context_offset (Esp),
179 context_offset (Ebp),
180 context_offset (Esi),
181 context_offset (Edi),
182 context_offset (Eip),
183 context_offset (EFlags),
184 context_offset (SegCs),
185 context_offset (SegSs),
186 context_offset (SegDs),
187 context_offset (SegEs),
188 context_offset (SegFs),
189 context_offset (SegGs),
190 context_offset (FloatSave.RegisterArea[0 * 10]),
191 context_offset (FloatSave.RegisterArea[1 * 10]),
192 context_offset (FloatSave.RegisterArea[2 * 10]),
193 context_offset (FloatSave.RegisterArea[3 * 10]),
194 context_offset (FloatSave.RegisterArea[4 * 10]),
195 context_offset (FloatSave.RegisterArea[5 * 10]),
196 context_offset (FloatSave.RegisterArea[6 * 10]),
197 context_offset (FloatSave.RegisterArea[7 * 10]),
c2d11a7d
JM		 198 context_offset (FloatSave.ControlWord),
199 context_offset (FloatSave.StatusWord),
200 context_offset (FloatSave.TagWord),
201 context_offset (FloatSave.ErrorSelector),
202 context_offset (FloatSave.ErrorOffset),
203 context_offset (FloatSave.DataSelector),
204 context_offset (FloatSave.DataOffset),
ed9a39eb 205 context_offset (FloatSave.ErrorSelector)
97da3b20 206 /* XMM0-7 */ ,
441532d7
PM		 207 context_offset (ExtendedRegisters[10*16]),
208 context_offset (ExtendedRegisters[11*16]),
209 context_offset (ExtendedRegisters[12*16]),
210 context_offset (ExtendedRegisters[13*16]),
211 context_offset (ExtendedRegisters[14*16]),
212 context_offset (ExtendedRegisters[15*16]),
213 context_offset (ExtendedRegisters[16*16]),
214 context_offset (ExtendedRegisters[17*16]),
215 /* MXCSR */
216 context_offset (ExtendedRegisters[24])
c906108c
SS		 217};
218
ed9a39eb
JM		 219#undef context_offset
220
c906108c
SS		 221/* This vector maps the target's idea of an exception (extracted
222 from the DEBUG_EVENT structure) to GDB's idea. */
223
224struct xlate_exception
225 {
226 int them;
227 enum target_signal us;
228 };
229
230static const struct xlate_exception
231 xlate[] =
232{
233 {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
234 {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
235 {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
236 {DBG_CONTROL_C, TARGET_SIGNAL_INT},
237 {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
7393af7c 238 {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
c906108c
SS		 239 {-1, -1}};
240
fa4ba8da
PM		 241static void
242check (BOOL ok, const char *file, int line)
243{
244 if (!ok)
dfe7f3ac 245 printf_filtered ("error return %s:%d was %lu\n", file, line,
fa4ba8da
PM		 246 GetLastError ());
247}
248
6537bb24
PA		 249/* Find a thread record given a thread id. If GET_CONTEXT is not 0,
250 then also retrieve the context for this thread. If GET_CONTEXT is
251 negative, then don't suspend the thread. */
c906108c
SS		 252static thread_info *
253thread_rec (DWORD id, int get_context)
254{
255 thread_info *th;
256
c5aa993b 257 for (th = &thread_head; (th = th->next) != NULL;)
c906108c
SS		 258 if (th->id == id)
259 {
6537bb24 260 if (!th->suspended && get_context)
c906108c 261 {
8a892701 262 if (get_context > 0 && id != current_event.dwThreadId)
6537bb24
PA		 263 {
264 if (SuspendThread (th->h) == (DWORD) -1)
265 {
266 DWORD err = GetLastError ();
267 warning (_("SuspendThread failed. (winerr %d)"),
268 (int) err);
269 return NULL;
270 }
271 th->suspended = 1;
272 }
c906108c 273 else if (get_context < 0)
6537bb24 274 th->suspended = -1;
3ade5333 275 th->reload_context = 1;
c906108c
SS		 276 }
277 return th;
278 }
279
280 return NULL;
281}
282
2dc38344 283/* Add a thread to the thread list. */
c906108c 284static thread_info *
2dc38344 285win32_add_thread (ptid_t ptid, HANDLE h)
c906108c
SS		 286{
287 thread_info *th;
2dc38344
PA		 288 DWORD id;
289
290 gdb_assert (ptid_get_tid (ptid) != 0);
291
292 id = ptid_get_tid (ptid);
c906108c
SS		 293
294 if ((th = thread_rec (id, FALSE)))
295 return th;
296
3929abe9 297 th = XZALLOC (thread_info);
c906108c
SS		 298 th->id = id;
299 th->h = h;
300 th->next = thread_head.next;
301 thread_head.next = th;
2dc38344
PA		 302 add_thread (ptid);
303 /* Set the debug registers for the new thread if they are used. */
fa4ba8da
PM		 304 if (debug_registers_used)
305 {
306 /* Only change the value of the debug registers. */
307 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
308 CHECK (GetThreadContext (th->h, &th->context));
309 th->context.Dr0 = dr[0];
310 th->context.Dr1 = dr[1];
311 th->context.Dr2 = dr[2];
312 th->context.Dr3 = dr[3];
6537bb24 313 th->context.Dr6 = DR6_CLEAR_VALUE;
fa4ba8da
PM		 314 th->context.Dr7 = dr[7];
315 CHECK (SetThreadContext (th->h, &th->context));
316 th->context.ContextFlags = 0;
317 }
c906108c
SS		 318 return th;
319}
320
321/* Clear out any old thread list and reintialize it to a
322 pristine state. */
323static void
3ee6f623 324win32_init_thread_list (void)
c906108c
SS		 325{
326 thread_info *th = &thread_head;
327
3ee6f623 328 DEBUG_EVENTS (("gdb: win32_init_thread_list\n"));
c906108c
SS		 329 init_thread_list ();
330 while (th->next != NULL)
331 {
332 thread_info *here = th->next;
333 th->next = here->next;
b8c9b27d 334 xfree (here);
c906108c 335 }
059198c1 336 thread_head.next = NULL;
c906108c
SS		 337}
338
339/* Delete a thread from the list of threads */
340static void
2dc38344 341win32_delete_thread (ptid_t ptid)
c906108c
SS		 342{
343 thread_info *th;
2dc38344
PA		 344 DWORD id;
345
346 gdb_assert (ptid_get_tid (ptid) != 0);
347
348 id = ptid_get_tid (ptid);
c906108c
SS		 349
350 if (info_verbose)
2dc38344
PA		 351 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
352 delete_thread (ptid);
c906108c
SS		 353
354 for (th = &thread_head;
355 th->next != NULL && th->next->id != id;
356 th = th->next)
357 continue;
358
359 if (th->next != NULL)
360 {
361 thread_info *here = th->next;
362 th->next = here->next;
b8c9b27d 363 xfree (here);
c906108c
SS		 364 }
365}
366
c906108c 367static void
56be3814 368do_win32_fetch_inferior_registers (struct regcache *regcache, int r)
c906108c 369{
c2d11a7d 370 char *context_offset = ((char *) &current_thread->context) + mappings[r];
20a6ec49
MD		 371 struct gdbarch *gdbarch = get_regcache_arch (regcache);
372 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
c2d11a7d 373 long l;
6c7de422 374
3ade5333 375 if (!current_thread)
d6dc8049
CF		 376 return; /* Windows sometimes uses a non-existent thread id in its
377 events */
3ade5333
CF		 378
379 if (current_thread->reload_context)
380 {
cb832706 381#ifdef __COPY_CONTEXT_SIZE
a244bdca
CF		 382 if (have_saved_context)
383 {
384 /* Lie about where the program actually is stopped since cygwin has informed us that
385 we should consider the signal to have occurred at another location which is stored
386 in "saved_context. */
387 memcpy (&current_thread->context, &saved_context, __COPY_CONTEXT_SIZE);
388 have_saved_context = 0;
389 }
390 else
cb832706 391#endif
a244bdca
CF		 392 {
393 thread_info *th = current_thread;
394 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
395 GetThreadContext (th->h, &th->context);
88616312
PM		 396 /* Copy dr values from that thread.
397 But only if there were not modified since last stop. PR gdb/2388 */
398 if (!debug_registers_changed)
399 {
400 dr[0] = th->context.Dr0;
401 dr[1] = th->context.Dr1;
402 dr[2] = th->context.Dr2;
403 dr[3] = th->context.Dr3;
404 dr[6] = th->context.Dr6;
405 dr[7] = th->context.Dr7;
406 }
a244bdca 407 }
3ade5333
CF		 408 current_thread->reload_context = 0;
409 }
410
20a6ec49 411 if (r == I387_FISEG_REGNUM (tdep))
c2d11a7d 412 {
8e860359 413 l = *((long *) context_offset) & 0xffff;
56be3814 414 regcache_raw_supply (regcache, r, (char *) &l);
c2d11a7d 415 }
20a6ec49 416 else if (r == I387_FOP_REGNUM (tdep))
c2d11a7d 417 {
8e860359 418 l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
56be3814 419 regcache_raw_supply (regcache, r, (char *) &l);
c2d11a7d
JM		 420 }
421 else if (r >= 0)
56be3814 422 regcache_raw_supply (regcache, r, context_offset);
c906108c
SS		 423 else
424 {
20a6ec49 425 for (r = 0; r < gdbarch_num_regs (gdbarch); r++)
56be3814 426 do_win32_fetch_inferior_registers (regcache, r);
c906108c
SS		 427 }
428}
429
430static void
56be3814 431win32_fetch_inferior_registers (struct regcache *regcache, int r)
c906108c 432{
2dc38344 433 current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
d6dc8049
CF		 434 /* Check if current_thread exists. Windows sometimes uses a non-existent
435 thread id in its events */
3ade5333 436 if (current_thread)
56be3814 437 do_win32_fetch_inferior_registers (regcache, r);
c906108c
SS		 438}
439
440static void
56be3814 441do_win32_store_inferior_registers (const struct regcache *regcache, int r)
c906108c 442{
3ade5333 443 if (!current_thread)
d6dc8049 444 /* Windows sometimes uses a non-existent thread id in its events */;
3ade5333 445 else if (r >= 0)
56be3814 446 regcache_raw_collect (regcache, r,
822c9732 447 ((char *) &current_thread->context) + mappings[r]);
c906108c
SS		 448 else
449 {
40a6adc1 450 for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
56be3814 451 do_win32_store_inferior_registers (regcache, r);
c906108c
SS		 452 }
453}
454
455/* Store a new register value into the current thread context */
456static void
56be3814 457win32_store_inferior_registers (struct regcache *regcache, int r)
c906108c 458{
2dc38344 459 current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
d6dc8049
CF		 460 /* Check if current_thread exists. Windows sometimes uses a non-existent
461 thread id in its events */
3ade5333 462 if (current_thread)
56be3814 463 do_win32_store_inferior_registers (regcache, r);
c906108c
SS		 464}
465
c2d11a7d 466static int psapi_loaded = 0;
33605d39
CF		 467static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD,
468 LPDWORD);
469static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
470 DWORD);
471static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR,
472 DWORD);
473
474/* Get the name of a given module at at given base address. If base_address
475 is zero return the first loaded module (which is always the name of the
476 executable). */
3ee6f623 477static int
33605d39 478get_module_name (DWORD base_address, char *dll_name_ret)
c2d11a7d
JM		 479{
480 DWORD len;
481 MODULEINFO mi;
482 int i;
8e860359 483 HMODULE dh_buf[1];
33605d39 484 HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */
c2d11a7d 485 DWORD cbNeeded;
33605d39
CF		 486#ifdef __CYGWIN__
487 char pathbuf[PATH_MAX + 1]; /* Temporary storage prior to converting to
488 posix form */
489#else
490 char *pathbuf = dll_name_ret; /* Just copy directly to passed-in arg */
491#endif
c2d11a7d 492
33605d39
CF		 493 /* If psapi_loaded < 0 either psapi.dll is not available or it does not contain
494 the needed functions. */
495 if (psapi_loaded <= 0)
496 goto failed;
c2d11a7d
JM		 497
498 cbNeeded = 0;
33605d39
CF		 499 /* Find size of buffer needed to handle list of modules loaded in inferior */
500 if (!psapi_EnumProcessModules (current_process_handle, DllHandle,
501 sizeof (HMODULE), &cbNeeded) || !cbNeeded)
c2d11a7d
JM		 502 goto failed;
503
33605d39 504 /* Allocate correct amount of space for module list */
8e860359 505 DllHandle = (HMODULE *) alloca (cbNeeded);
c2d11a7d
JM		 506 if (!DllHandle)
507 goto failed;
508
33605d39
CF		 509 /* Get the list of modules */
510 if (!psapi_EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
511 &cbNeeded))
c2d11a7d
JM		 512 goto failed;
513
29fe111d 514 for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
c2d11a7d 515 {
33605d39
CF		 516 /* Get information on this module */
517 if (!psapi_GetModuleInformation (current_process_handle, DllHandle[i],
518 &mi, sizeof (mi)))
8a3fe4f8 519 error (_("Can't get module info"));
c2d11a7d 520
33605d39
CF		 521 if (!base_address || (DWORD) (mi.lpBaseOfDll) == base_address)
522 {
523 /* Try to find the name of the given module */
524 len = psapi_GetModuleFileNameExA (current_process_handle,
525 DllHandle[i], pathbuf, MAX_PATH);
526 if (len == 0)
527 error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
528#ifdef __CYGWIN__
529 /* Cygwin prefers that the path be in /x/y/z format */
530 cygwin_conv_to_full_posix_path (pathbuf, dll_name_ret);
531#endif
532 return 1; /* success */
533 }
c2d11a7d
JM		 534 }
535
536failed:
537 dll_name_ret[0] = '\0';
33605d39 538 return 0; /* failure */
c2d11a7d
JM		 539}
540
450005e7
CF		 541/* Encapsulate the information required in a call to
542 symbol_file_add_args */
8a892701
CF		 543struct safe_symbol_file_add_args
544{
545 char *name;
546 int from_tty;
547 struct section_addr_info *addrs;
548 int mainline;
549 int flags;
7c5c87c0 550 struct ui_file *err, *out;
8a892701
CF		 551 struct objfile *ret;
552};
553
02e423b9 554/* Maintain a linked list of "so" information. */
3ee6f623 555struct lm_info
02e423b9 556{
02e423b9 557 DWORD load_addr;
3ee6f623
CF		 558};
559
560static struct so_list solib_start, *solib_end;
02e423b9 561
450005e7
CF		 562/* Call symbol_file_add with stderr redirected. We don't care if there
563 are errors. */
8a892701
CF		 564static int
565safe_symbol_file_add_stub (void *argv)
566{
3ee6f623 567#define p ((struct safe_symbol_file_add_args *) argv)
8a892701
CF		 568 p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
569 return !!p->ret;
570#undef p
571}
572
450005e7 573/* Restore gdb's stderr after calling symbol_file_add */
8a892701 574static void
7c5c87c0 575safe_symbol_file_add_cleanup (void *p)
8a892701 576{
8e860359 577#define sp ((struct safe_symbol_file_add_args *)p)
450005e7 578 gdb_flush (gdb_stderr);
7c5c87c0 579 gdb_flush (gdb_stdout);
d3ff4a77 580 ui_file_delete (gdb_stderr);
7c5c87c0 581 ui_file_delete (gdb_stdout);
d3ff4a77 582 gdb_stderr = sp->err;
9d3789f7 583 gdb_stdout = sp->out;
8e860359 584#undef sp
8a892701
CF		 585}
586
450005e7 587/* symbol_file_add wrapper that prevents errors from being displayed. */
8a892701
CF		 588static struct objfile *
589safe_symbol_file_add (char *name, int from_tty,
590 struct section_addr_info *addrs,
591 int mainline, int flags)
8a892701
CF		 592{
593 struct safe_symbol_file_add_args p;
594 struct cleanup *cleanup;
595
7c5c87c0 596 cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
8a892701 597
7c5c87c0
CF		 598 p.err = gdb_stderr;
599 p.out = gdb_stdout;
450005e7 600 gdb_flush (gdb_stderr);
7c5c87c0 601 gdb_flush (gdb_stdout);
d3ff4a77 602 gdb_stderr = ui_file_new ();
7c5c87c0 603 gdb_stdout = ui_file_new ();
8a892701
CF		 604 p.name = name;
605 p.from_tty = from_tty;
606 p.addrs = addrs;
607 p.mainline = mainline;
608 p.flags = flags;
609 catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
610
611 do_cleanups (cleanup);
612 return p.ret;
613}
614
de1b3c3d
PA		 615static struct so_list *
616win32_make_so (const char *name, DWORD load_addr)
8e860359 617{
3ee6f623 618 struct so_list *so;
3f8ad85b
CF		 619 char buf[MAX_PATH + 1];
620 char cwd[MAX_PATH + 1];
621 char *p;
622 WIN32_FIND_DATA w32_fd;
623 HANDLE h = FindFirstFile(name, &w32_fd);
5633f842 624 MEMORY_BASIC_INFORMATION m;
3f8ad85b 625
6badb179
CF		 626 if (h == INVALID_HANDLE_VALUE)
627 strcpy (buf, name);
628 else
3f8ad85b 629 {
c914e0cc
CF		 630 FindClose (h);
631 strcpy (buf, name);
632 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
633 {
634 p = strrchr (buf, '\\');
635 if (p)
636 p[1] = '\0';
637 SetCurrentDirectory (buf);
638 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
639 SetCurrentDirectory (cwd);
640 }
3f8ad85b
CF		 641 }
642
3ee6f623
CF		 643 if (strcasecmp (buf, "ntdll.dll") == 0)
644 {
645 GetSystemDirectory (buf, sizeof (buf));
646 strcat (buf, "\\ntdll.dll");
647 }
3929abe9 648 so = XZALLOC (struct so_list);
3ee6f623
CF		 649 so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
650 so->lm_info->load_addr = load_addr;
de1b3c3d 651 strcpy (so->so_original_name, name);
10325bc5
PA		 652#ifndef __CYGWIN__
653 strcpy (so->so_name, buf);
654#else
655 cygwin_conv_to_posix_path (buf, so->so_name);
de1b3c3d
PA		 656 /* Record cygwin1.dll .text start/end. */
657 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
658 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
659 {
660 bfd *abfd;
661 asection *text = NULL;
662 CORE_ADDR text_vma;
8e860359 663
610dd7f9 664 abfd = bfd_openr (so->so_name, "pei-i386");
a244bdca 665
de1b3c3d
PA		 666 if (!abfd)
667 return so;
668
669 if (bfd_check_format (abfd, bfd_object))
670 text = bfd_get_section_by_name (abfd, ".text");
671
672 if (!text)
673 {
674 bfd_close (abfd);
675 return so;
676 }
677
678 /* The symbols in a dll are offset by 0x1000, which is the the
679 offset from 0 of the first byte in an image - because of the
680 file header and the section alignment. */
681 cygwin_load_start = load_addr + 0x1000;
682 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
683
684 bfd_close (abfd);
685 }
10325bc5 686#endif
de1b3c3d
PA		 687
688 return so;
8e860359
CF		 689}
690
3ee6f623 691static char *
dfe7f3ac
CF		 692get_image_name (HANDLE h, void *address, int unicode)
693{
694 static char buf[(2 * MAX_PATH) + 1];
695 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
696 char *address_ptr;
697 int len = 0;
698 char b[2];
699 DWORD done;
700
701 /* Attempt to read the name of the dll that was detected.
702 This is documented to work only when actively debugging
703 a program. It will not work for attached processes. */
704 if (address == NULL)
705 return NULL;
706
dfe7f3ac
CF		 707 /* See if we could read the address of a string, and that the
708 address isn't null. */
9f476a01 709 if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
6f17862b 710 || done != sizeof (address_ptr) || !address_ptr)
dfe7f3ac
CF		 711 return NULL;
712
713 /* Find the length of the string */
6f17862b
CF		 714 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
715 && (b[0] != 0 || b[size - 1] != 0) && done == size)
716 continue;
dfe7f3ac
CF		 717
718 if (!unicode)
719 ReadProcessMemory (h, address_ptr, buf, len, &done);
720 else
721 {
722 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
723 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
724 &done);
725
726 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
727 }
728
729 return buf;
730}
731
c906108c
SS		 732/* Wait for child to do something. Return pid of child, or -1 in case
733 of error; store status through argument pointer OURSTATUS. */
c906108c 734static int
0a65a603 735handle_load_dll (void *dummy)
c906108c 736{
c5aa993b 737 LOAD_DLL_DEBUG_INFO *event = &current_event.u.LoadDll;
c906108c 738 char dll_buf[MAX_PATH + 1];
450005e7 739 char *dll_name = NULL;
c906108c 740
c5aa993b 741 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
c906108c 742
33605d39 743 if (!get_module_name ((DWORD) event->lpBaseOfDll, dll_buf))
8e860359 744 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
c906108c 745
c2d11a7d 746 dll_name = dll_buf;
c906108c 747
dfe7f3ac 748 if (*dll_name == '\0')
de1b3c3d
PA		 749 dll_name = get_image_name (current_process_handle,
750 event->lpImageName, event->fUnicode);
c906108c
SS		 751 if (!dll_name)
752 return 1;
753
de1b3c3d
PA		 754 solib_end->next = win32_make_so (dll_name, (DWORD) event->lpBaseOfDll);
755 solib_end = solib_end->next;
450005e7 756
7488902c
PM		 757 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at 0x%lx.\n", solib_end->so_name,
758 (DWORD) solib_end->lm_info->load_addr));
759
450005e7
CF		 760 return 1;
761}
762
3ee6f623
CF		 763static void
764win32_free_so (struct so_list *so)
765{
3ee6f623
CF		 766 if (so->lm_info)
767 xfree (so->lm_info);
de1b3c3d 768 xfree (so);
3cb8e7f6
CF		 769}
770
d3ff4a77 771static int
0a65a603 772handle_unload_dll (void *dummy)
d3ff4a77 773{
de1b3c3d 774 DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll;
3ee6f623 775 struct so_list *so;
d3ff4a77
CF		 776
777 for (so = &solib_start; so->next != NULL; so = so->next)
3ee6f623 778 if (so->next->lm_info->load_addr == lpBaseOfDll)
d3ff4a77 779 {
3ee6f623 780 struct so_list *sodel = so->next;
d3ff4a77
CF		 781 so->next = sodel->next;
782 if (!so->next)
783 solib_end = so;
7488902c
PM		 784 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
785
de1b3c3d 786 win32_free_so (sodel);
3929abe9 787 solib_add (NULL, 0, NULL, auto_solib_add);
d3ff4a77
CF		 788 return 1;
789 }
3929abe9 790
8a3fe4f8 791 error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
d3ff4a77
CF		 792
793 return 0;
794}
795
450005e7 796/* Clear list of loaded DLLs. */
3ee6f623
CF		 797static void
798win32_clear_solib (void)
450005e7 799{
450005e7
CF		 800 solib_start.next = NULL;
801 solib_end = &solib_start;
450005e7 802}
295732ea 803
450005e7
CF		 804/* Load DLL symbol info. */
805void
7470a420 806dll_symbol_command (char *args, int from_tty)
450005e7 807{
8e860359 808 int n;
450005e7 809 dont_repeat ();
8e860359 810
450005e7 811 if (args == NULL)
8a3fe4f8 812 error (_("dll-symbols requires a file name"));
450005e7 813
8e860359
CF		 814 n = strlen (args);
815 if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
816 {
817 char *newargs = (char *) alloca (n + 4 + 1);
818 strcpy (newargs, args);
819 strcat (newargs, ".dll");
820 args = newargs;
821 }
822
7470a420 823 safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
8e860359 824}
450005e7 825
c906108c
SS		 826/* Handle DEBUG_STRING output from child process.
827 Cygwin prepends its messages with a "cygwin:". Interpret this as
828 a Cygwin signal. Otherwise just print the string as a warning. */
829static int
830handle_output_debug_string (struct target_waitstatus *ourstatus)
831{
a244bdca
CF		 832 char *s = NULL;
833 int retval = 0;
c906108c
SS		 834
835 if (!target_read_string
2c647436
PM		 836 ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
837 &s, 1024, 0)
c906108c 838 || !s || !*s)
a244bdca
CF		 839 /* nothing to do */;
840 else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
c906108c 841 {
10325bc5 842#ifdef __CYGWIN__
ed9a39eb 843 if (strncmp (s, "cYg", 3) != 0)
10325bc5 844#endif
8a3fe4f8 845 warning (("%s"), s);
c906108c 846 }
cb832706 847#ifdef __COPY_CONTEXT_SIZE
ed9a39eb 848 else
c906108c 849 {
a244bdca
CF		 850 /* Got a cygwin signal marker. A cygwin signal is followed by the signal number
851 itself and then optionally followed by the thread id and address to saved context
852 within the DLL. If these are supplied, then the given thread is assumed to have
853 issued the signal and the context from the thread is assumed to be stored at the
854 given address in the inferior. Tell gdb to treat this like a real signal. */
c906108c 855 char *p;
3929abe9 856 int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
a244bdca 857 int gotasig = target_signal_from_host (sig);
7a292a7a
SS		 858 ourstatus->value.sig = gotasig;
859 if (gotasig)
a244bdca
CF		 860 {
861 LPCVOID x;
862 DWORD n;
863 ourstatus->kind = TARGET_WAITKIND_STOPPED;
864 retval = strtoul (p, &p, 0);
865 if (!retval)
866 retval = main_thread_id;
867 else if ((x = (LPCVOID) strtoul (p, &p, 0))
868 && ReadProcessMemory (current_process_handle, x,
869 &saved_context, __COPY_CONTEXT_SIZE, &n)
870 && n == __COPY_CONTEXT_SIZE)
871 have_saved_context = 1;
872 current_event.dwThreadId = retval;
873 }
c906108c 874 }
cb832706 875#endif
c906108c 876
a244bdca
CF		 877 if (s)
878 xfree (s);
879 return retval;
c906108c
SS		 880}
881
c1748f97
PM		 882static int
883display_selector (HANDLE thread, DWORD sel)
884{
885 LDT_ENTRY info;
886 if (GetThreadSelectorEntry (thread, sel, &info))
887 {
888 int base, limit;
889 printf_filtered ("0x%03lx: ", sel);
890 if (!info.HighWord.Bits.Pres)
baa93fa6
CF		 891 {
892 puts_filtered ("Segment not present\n");
893 return 0;
894 }
c1748f97
PM		 895 base = (info.HighWord.Bits.BaseHi << 24) +
896 (info.HighWord.Bits.BaseMid << 16)
897 + info.BaseLow;
898 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
899 if (info.HighWord.Bits.Granularity)
caad7706 900 limit = (limit << 12) | 0xfff;
c1748f97
PM		 901 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
902 if (info.HighWord.Bits.Default_Big)
baa93fa6 903 puts_filtered(" 32-bit ");
c1748f97 904 else
baa93fa6 905 puts_filtered(" 16-bit ");
c1748f97
PM		 906 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
907 {
908 case 0:
baa93fa6
CF		 909 puts_filtered ("Data (Read-Only, Exp-up");
910 break;
c1748f97 911 case 1:
baa93fa6
CF		 912 puts_filtered ("Data (Read/Write, Exp-up");
913 break;
c1748f97 914 case 2:
baa93fa6
CF		 915 puts_filtered ("Unused segment (");
916 break;
c1748f97 917 case 3:
baa93fa6
CF		 918 puts_filtered ("Data (Read/Write, Exp-down");
919 break;
c1748f97 920 case 4:
baa93fa6
CF		 921 puts_filtered ("Code (Exec-Only, N.Conf");
922 break;
c1748f97 923 case 5:
baa93fa6 924 puts_filtered ("Code (Exec/Read, N.Conf");
c1748f97
PM		 925 break;
926 case 6:
baa93fa6 927 puts_filtered ("Code (Exec-Only, Conf");
c1748f97
PM		 928 break;
929 case 7:
baa93fa6 930 puts_filtered ("Code (Exec/Read, Conf");
c1748f97
PM		 931 break;
932 default:
933 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
934 }
935 if ((info.HighWord.Bits.Type & 0x1) == 0)
baa93fa6 936 puts_filtered(", N.Acc");
c1748f97
PM		 937 puts_filtered (")\n");
938 if ((info.HighWord.Bits.Type & 0x10) == 0)
939 puts_filtered("System selector ");
940 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
941 if (info.HighWord.Bits.Granularity)
baa93fa6 942 puts_filtered ("Page granular.\n");
c1748f97
PM		 943 else
944 puts_filtered ("Byte granular.\n");
945 return 1;
946 }
947 else
948 {
949 printf_filtered ("Invalid selector 0x%lx.\n",sel);
950 return 0;
951 }
952}
953
954static void
955display_selectors (char * args, int from_tty)
956{
957 if (!current_thread)
958 {
959 puts_filtered ("Impossible to display selectors now.\n");
960 return;
961 }
962 if (!args)
963 {
964
965 puts_filtered ("Selector $cs\n");
966 display_selector (current_thread->h,
baa93fa6 967 current_thread->context.SegCs);
c1748f97
PM		 968 puts_filtered ("Selector $ds\n");
969 display_selector (current_thread->h,
baa93fa6 970 current_thread->context.SegDs);
c1748f97
PM		 971 puts_filtered ("Selector $es\n");
972 display_selector (current_thread->h,
baa93fa6 973 current_thread->context.SegEs);
c1748f97
PM		 974 puts_filtered ("Selector $ss\n");
975 display_selector (current_thread->h,
baa93fa6 976 current_thread->context.SegSs);
c1748f97
PM		 977 puts_filtered ("Selector $fs\n");
978 display_selector (current_thread->h,
979 current_thread->context.SegFs);
980 puts_filtered ("Selector $gs\n");
981 display_selector (current_thread->h,
baa93fa6 982 current_thread->context.SegGs);
c1748f97
PM		 983 }
984 else
985 {
986 int sel;
987 sel = parse_and_eval_long (args);
988 printf_filtered ("Selector \"%s\"\n",args);
989 display_selector (current_thread->h, sel);
990 }
991}
992
993static struct cmd_list_element *info_w32_cmdlist = NULL;
994
995static void
996info_w32_command (char *args, int from_tty)
997{
998 help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
999}
1000
1001
7393af7c 1002#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
4e52d31c 1003 printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
7393af7c
PM		 1004 (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
1005
c906108c 1006static int
450005e7 1007handle_exception (struct target_waitstatus *ourstatus)
c906108c 1008{
c906108c 1009 thread_info *th;
29fe111d 1010 DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
c906108c 1011
29fe111d 1012 ourstatus->kind = TARGET_WAITKIND_STOPPED;
8a892701 1013
c906108c
SS		 1014 /* Record the context of the current thread */
1015 th = thread_rec (current_event.dwThreadId, -1);
1016
29fe111d 1017 switch (code)
c906108c
SS		 1018 {
1019 case EXCEPTION_ACCESS_VIOLATION:
7393af7c
PM		 1020 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1021 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
10325bc5 1022#ifdef __CYGWIN__
8da8e0b3 1023 {
a244bdca
CF		 1024 /* See if the access violation happened within the cygwin DLL itself. Cygwin uses
1025 a kind of exception handling to deal with passed-in invalid addresses. gdb
1026 should not treat these as real SEGVs since they will be silently handled by
1027 cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process
1028 and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up
1029 within the text segment of the DLL itself. */
8da8e0b3 1030 char *fn;
2c647436
PM		 1031 bfd_vma addr = (bfd_vma) (uintptr_t) current_event.u.Exception.
1032 ExceptionRecord.ExceptionAddress;
09280ddf 1033 if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end))
a244bdca
CF		 1034 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1035 && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0))
8da8e0b3
CF		 1036 return 0;
1037 }
10325bc5 1038#endif
7393af7c
PM		 1039 break;
1040 case STATUS_STACK_OVERFLOW:
1041 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
c906108c 1042 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
7393af7c
PM		 1043 break;
1044 case STATUS_FLOAT_DENORMAL_OPERAND:
1045 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1046 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1047 break;
1048 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1049 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1050 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1051 break;
1052 case STATUS_FLOAT_INEXACT_RESULT:
1053 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1054 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1055 break;
1056 case STATUS_FLOAT_INVALID_OPERATION:
1057 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1058 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1059 break;
1060 case STATUS_FLOAT_OVERFLOW:
1061 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1062 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1063 break;
1064 case STATUS_FLOAT_STACK_CHECK:
1065 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1066 ourstatus->value.sig = TARGET_SIGNAL_FPE;
c906108c 1067 break;
0d06e24b 1068 case STATUS_FLOAT_UNDERFLOW:
7393af7c
PM		 1069 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1070 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1071 break;
0d06e24b 1072 case STATUS_FLOAT_DIVIDE_BY_ZERO:
7393af7c
PM		 1073 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1074 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1075 break;
0d06e24b 1076 case STATUS_INTEGER_DIVIDE_BY_ZERO:
7393af7c 1077 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
0d06e24b 1078 ourstatus->value.sig = TARGET_SIGNAL_FPE;
0d06e24b 1079 break;
7393af7c
PM		 1080 case STATUS_INTEGER_OVERFLOW:
1081 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1082 ourstatus->value.sig = TARGET_SIGNAL_FPE;
c906108c
SS		 1083 break;
1084 case EXCEPTION_BREAKPOINT:
7393af7c 1085 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
c906108c
SS		 1086 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1087 break;
1088 case DBG_CONTROL_C:
7393af7c 1089 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
c906108c 1090 ourstatus->value.sig = TARGET_SIGNAL_INT;
5b421780
PM		 1091 break;
1092 case DBG_CONTROL_BREAK:
7393af7c 1093 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
5b421780 1094 ourstatus->value.sig = TARGET_SIGNAL_INT;
c906108c
SS		 1095 break;
1096 case EXCEPTION_SINGLE_STEP:
7393af7c 1097 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
c906108c
SS		 1098 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1099 break;
8227c82d 1100 case EXCEPTION_ILLEGAL_INSTRUCTION:
7393af7c
PM		 1101 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1102 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1103 break;
1104 case EXCEPTION_PRIV_INSTRUCTION:
1105 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1106 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1107 break;
1108 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1109 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
8227c82d
CF		 1110 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1111 break;
c906108c 1112 default:
a244bdca 1113 /* Treat unhandled first chance exceptions specially. */
02e423b9 1114 if (current_event.u.Exception.dwFirstChance)
a244bdca 1115 return -1;
29fe111d 1116 printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
c5aa993b 1117 current_event.u.Exception.ExceptionRecord.ExceptionCode,
8e860359 1118 (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
c906108c
SS		 1119 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
1120 break;
1121 }
1122 exception_count++;
7393af7c 1123 last_sig = ourstatus->value.sig;
c906108c
SS		 1124 return 1;
1125}
1126
1127/* Resume all artificially suspended threads if we are continuing
1128 execution */
1129static BOOL
3ee6f623 1130win32_continue (DWORD continue_status, int id)
c906108c
SS		 1131{
1132 int i;
1133 thread_info *th;
1134 BOOL res;
1135
7393af7c
PM		 1136 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
1137 current_event.dwProcessId, current_event.dwThreadId,
dfe7f3ac 1138 continue_status == DBG_CONTINUE ?
7393af7c 1139 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
6537bb24
PA		 1140
1141 for (th = &thread_head; (th = th->next) != NULL;)
1142 if ((id == -1 || id == (int) th->id)
1143 && th->suspended)
1144 {
1145 if (debug_registers_changed)
1146 {
1147 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1148 th->context.Dr0 = dr[0];
1149 th->context.Dr1 = dr[1];
1150 th->context.Dr2 = dr[2];
1151 th->context.Dr3 = dr[3];
1152 th->context.Dr6 = DR6_CLEAR_VALUE;
1153 th->context.Dr7 = dr[7];
1154 }
1155 if (th->context.ContextFlags)
1156 {
1157 CHECK (SetThreadContext (th->h, &th->context));
1158 th->context.ContextFlags = 0;
1159 }
1160 if (th->suspended > 0)
1161 (void) ResumeThread (th->h);
1162 th->suspended = 0;
1163 }
1164
7a292a7a
SS		 1165 res = ContinueDebugEvent (current_event.dwProcessId,
1166 current_event.dwThreadId,
1167 continue_status);
c906108c 1168
fa4ba8da 1169 debug_registers_changed = 0;
c906108c
SS		 1170 return res;
1171}
1172
d6dc8049
CF		 1173/* Called in pathological case where Windows fails to send a
1174 CREATE_PROCESS_DEBUG_EVENT after an attach. */
3ee6f623 1175static DWORD
5439edaa 1176fake_create_process (void)
3ade5333
CF		 1177{
1178 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1179 current_event.dwProcessId);
bf25528d
CF		 1180 if (current_process_handle != NULL)
1181 open_process_used = 1;
1182 else
1183 {
1184 error (_("OpenProcess call failed, GetLastError = %lud\n"),
1185 GetLastError ());
1186 /* We can not debug anything in that case. */
1187 }
3ade5333 1188 main_thread_id = current_event.dwThreadId;
2dc38344
PA		 1189 current_thread = win32_add_thread (ptid_build (current_event.dwProcessId, 0,
1190 current_event.dwThreadId),
3ade5333
CF		 1191 current_event.u.CreateThread.hThread);
1192 return main_thread_id;
1193}
1194
a244bdca
CF		 1195static void
1196win32_resume (ptid_t ptid, int step, enum target_signal sig)
1197{
1198 thread_info *th;
1199 DWORD continue_status = DBG_CONTINUE;
1200
2dc38344
PA		 1201 /* A specific PTID means `step only this thread id'. */
1202 int resume_all = ptid_equal (ptid, minus_one_ptid);
1203
1204 /* If we're continuing all threads, it's the current inferior that
1205 should be handled specially. */
1206 if (resume_all)
1207 ptid = inferior_ptid;
a244bdca
CF		 1208
1209 if (sig != TARGET_SIGNAL_0)
1210 {
1211 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1212 {
1213 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1214 }
1215 else if (sig == last_sig)
1216 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1217 else
1218#if 0
1219/* This code does not seem to work, because
1220 the kernel does probably not consider changes in the ExceptionRecord
1221 structure when passing the exception to the inferior.
1222 Note that this seems possible in the exception handler itself. */
1223 {
1224 int i;
1225 for (i = 0; xlate[i].them != -1; i++)
1226 if (xlate[i].us == sig)
1227 {
1228 current_event.u.Exception.ExceptionRecord.ExceptionCode =
1229 xlate[i].them;
1230 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1231 break;
1232 }
1233 if (continue_status == DBG_CONTINUE)
1234 {
1235 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1236 }
1237 }
1238#endif
1239 DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
1240 last_sig));
1241 }
1242
1243 last_sig = TARGET_SIGNAL_0;
1244
2dc38344
PA		 1245 DEBUG_EXEC (("gdb: win32_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
1246 ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
a244bdca
CF		 1247
1248 /* Get context for currently selected thread */
2dc38344 1249 th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
a244bdca
CF		 1250 if (th)
1251 {
1252 if (step)
1253 {
1254 /* Single step by setting t bit */
3e8c568d
UW		 1255 win32_fetch_inferior_registers (get_current_regcache (),
1256 gdbarch_ps_regnum (current_gdbarch));
a244bdca
CF		 1257 th->context.EFlags |= FLAG_TRACE_BIT;
1258 }
1259
1260 if (th->context.ContextFlags)
1261 {
1262 if (debug_registers_changed)
1263 {
1264 th->context.Dr0 = dr[0];
1265 th->context.Dr1 = dr[1];
1266 th->context.Dr2 = dr[2];
1267 th->context.Dr3 = dr[3];
6537bb24 1268 th->context.Dr6 = DR6_CLEAR_VALUE;
a244bdca
CF		 1269 th->context.Dr7 = dr[7];
1270 }
1271 CHECK (SetThreadContext (th->h, &th->context));
1272 th->context.ContextFlags = 0;
1273 }
1274 }
1275
1276 /* Allow continuing with the same signal that interrupted us.
1277 Otherwise complain. */
1278
2dc38344
PA		 1279 if (resume_all)
1280 win32_continue (continue_status, -1);
1281 else
1282 win32_continue (continue_status, ptid_get_tid (ptid));
a244bdca
CF		 1283}
1284
8a892701
CF		 1285/* Get the next event from the child. Return 1 if the event requires
1286 handling by WFI (or whatever).
1287 */
c2d11a7d 1288static int
3ee6f623 1289get_win32_debug_event (int pid, struct target_waitstatus *ourstatus)
c2d11a7d
JM		 1290{
1291 BOOL debug_event;
8a892701 1292 DWORD continue_status, event_code;
87a45c96 1293 thread_info *th;
8a892701 1294 static thread_info dummy_thread_info;
450005e7 1295 int retval = 0;
c2d11a7d 1296
7393af7c 1297 last_sig = TARGET_SIGNAL_0;
9d3789f7 1298
8a892701 1299 if (!(debug_event = WaitForDebugEvent (&current_event, 1000)))
29fe111d 1300 goto out;
c2d11a7d
JM		 1301
1302 event_count++;
1303 continue_status = DBG_CONTINUE;
c2d11a7d 1304
8a892701 1305 event_code = current_event.dwDebugEventCode;
450005e7 1306 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
87a45c96 1307 th = NULL;
a244bdca 1308 have_saved_context = 0;
8a892701
CF		 1309
1310 switch (event_code)
c2d11a7d
JM		 1311 {
1312 case CREATE_THREAD_DEBUG_EVENT:
1313 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
8a892701
CF		 1314 (unsigned) current_event.dwProcessId,
1315 (unsigned) current_event.dwThreadId,
1316 "CREATE_THREAD_DEBUG_EVENT"));
dfe7f3ac 1317 if (saw_create != 1)
3ade5333 1318 {
181e7f93
PA		 1319 struct inferior *inf;
1320 inf = find_inferior_pid (current_event.dwProcessId);
1321 if (!saw_create && inf->attach_flag)
3ade5333 1322 {
d6dc8049
CF		 1323 /* Kludge around a Windows bug where first event is a create
1324 thread event. Caused when attached process does not have
1325 a main thread. */
3a3e9ee3 1326 retval = fake_create_process ();
181e7f93
PA		 1327 if (retval)
1328 saw_create++;
3ade5333
CF		 1329 }
1330 break;
1331 }
c2d11a7d 1332 /* Record the existence of this thread */
450005e7 1333 retval = current_event.dwThreadId;
2dc38344
PA		 1334 th = win32_add_thread (ptid_build (current_event.dwProcessId, 0,
1335 current_event.dwThreadId),
1336 current_event.u.CreateThread.hThread);
c2d11a7d
JM		 1337 break;
1338
1339 case EXIT_THREAD_DEBUG_EVENT:
1340 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1341 (unsigned) current_event.dwProcessId,
1342 (unsigned) current_event.dwThreadId,
1343 "EXIT_THREAD_DEBUG_EVENT"));
87a45c96
CF		 1344 if (current_event.dwThreadId != main_thread_id)
1345 {
2dc38344
PA		 1346 win32_delete_thread (ptid_build (current_event.dwProcessId, 0,
1347 current_event.dwThreadId));
87a45c96
CF		 1348 th = &dummy_thread_info;
1349 }
c2d11a7d
JM		 1350 break;
1351
1352 case CREATE_PROCESS_DEBUG_EVENT:
1353 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1354 (unsigned) current_event.dwProcessId,
1355 (unsigned) current_event.dwThreadId,
1356 "CREATE_PROCESS_DEBUG_EVENT"));
700b351b 1357 CloseHandle (current_event.u.CreateProcessInfo.hFile);
dfe7f3ac 1358 if (++saw_create != 1)
bf25528d 1359 break;
c2d11a7d 1360
dfe7f3ac 1361 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
87a45c96 1362 if (main_thread_id)
2dc38344
PA		 1363 win32_delete_thread (ptid_build (current_event.dwProcessId, 0,
1364 main_thread_id));
9d3789f7 1365 main_thread_id = current_event.dwThreadId;
c2d11a7d 1366 /* Add the main thread */
2dc38344
PA		 1367 th = win32_add_thread (ptid_build (current_event.dwProcessId, 0,
1368 current_event.dwThreadId),
8a892701 1369 current_event.u.CreateProcessInfo.hThread);
3a3e9ee3 1370 retval = current_event.dwThreadId;
c2d11a7d
JM		 1371 break;
1372
1373 case EXIT_PROCESS_DEBUG_EVENT:
1374 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1375 (unsigned) current_event.dwProcessId,
1376 (unsigned) current_event.dwThreadId,
1377 "EXIT_PROCESS_DEBUG_EVENT"));
dfe7f3ac
CF		 1378 if (saw_create != 1)
1379 break;
c2d11a7d
JM		 1380 ourstatus->kind = TARGET_WAITKIND_EXITED;
1381 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
9d3789f7 1382 retval = main_thread_id;
8a892701 1383 break;
c2d11a7d
JM		 1384
1385 case LOAD_DLL_DEBUG_EVENT:
1386 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1387 (unsigned) current_event.dwProcessId,
1388 (unsigned) current_event.dwThreadId,
1389 "LOAD_DLL_DEBUG_EVENT"));
700b351b 1390 CloseHandle (current_event.u.LoadDll.hFile);
dfe7f3ac
CF		 1391 if (saw_create != 1)
1392 break;
8a892701 1393 catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
450005e7
CF		 1394 ourstatus->kind = TARGET_WAITKIND_LOADED;
1395 ourstatus->value.integer = 0;
9d3789f7 1396 retval = main_thread_id;
c2d11a7d
JM		 1397 break;
1398
1399 case UNLOAD_DLL_DEBUG_EVENT:
1400 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1401 (unsigned) current_event.dwProcessId,
1402 (unsigned) current_event.dwThreadId,
1403 "UNLOAD_DLL_DEBUG_EVENT"));
dfe7f3ac
CF		 1404 if (saw_create != 1)
1405 break;
d3ff4a77 1406 catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
de1b3c3d
PA		 1407 ourstatus->kind = TARGET_WAITKIND_LOADED;
1408 ourstatus->value.integer = 0;
1409 retval = main_thread_id;
d3ff4a77 1410 break;
c2d11a7d
JM		 1411
1412 case EXCEPTION_DEBUG_EVENT:
1413 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1414 (unsigned) current_event.dwProcessId,
1415 (unsigned) current_event.dwThreadId,
1416 "EXCEPTION_DEBUG_EVENT"));
dfe7f3ac
CF		 1417 if (saw_create != 1)
1418 break;
a244bdca
CF		 1419 switch (handle_exception (ourstatus))
1420 {
1421 case 0:
1422 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1423 break;
1424 case 1:
1425 retval = current_event.dwThreadId;
1426 break;
1427 case -1:
1428 last_sig = 1;
1429 continue_status = -1;
1430 break;
1431 }
c2d11a7d
JM		 1432 break;
1433
8a892701 1434 case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
c2d11a7d 1435 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
8a892701
CF		 1436 (unsigned) current_event.dwProcessId,
1437 (unsigned) current_event.dwThreadId,
1438 "OUTPUT_DEBUG_STRING_EVENT"));
dfe7f3ac
CF		 1439 if (saw_create != 1)
1440 break;
a244bdca 1441 retval = handle_output_debug_string (ourstatus);
c2d11a7d 1442 break;
9d3789f7 1443
c2d11a7d 1444 default:
dfe7f3ac
CF		 1445 if (saw_create != 1)
1446 break;
29fe111d
CF		 1447 printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
1448 (DWORD) current_event.dwProcessId,
1449 (DWORD) current_event.dwThreadId);
1450 printf_unfiltered (" unknown event code %ld\n",
c2d11a7d
JM		 1451 current_event.dwDebugEventCode);
1452 break;
1453 }
1454
dfe7f3ac 1455 if (!retval || saw_create != 1)
a244bdca
CF		 1456 {
1457 if (continue_status == -1)
2dc38344 1458 win32_resume (minus_one_ptid, 0, 1);
a244bdca
CF		 1459 else
1460 CHECK (win32_continue (continue_status, -1));
1461 }
450005e7 1462 else
9d3789f7 1463 {
2dc38344
PA		 1464 inferior_ptid = ptid_build (current_event.dwProcessId, 0,
1465 retval);
3ade5333 1466 current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
9d3789f7 1467 }
c2d11a7d
JM		 1468
1469out:
450005e7 1470 return retval;
c2d11a7d
JM		 1471}
1472
2dc38344 1473/* Wait for interesting events to occur in the target process. */
39f77062 1474static ptid_t
3ee6f623 1475win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
c906108c 1476{
2dc38344 1477 int pid = -1;
39f77062 1478
c44537cf
CV		 1479 target_terminal_ours ();
1480
c906108c
SS		 1481 /* We loop when we get a non-standard exception rather than return
1482 with a SPURIOUS because resume can try and step or modify things,
1483 which needs a current_thread->h. But some of these exceptions mark
1484 the birth or death of threads, which mean that the current thread
1485 isn't necessarily what you think it is. */
1486
1487 while (1)
450005e7 1488 {
c57918b2
JB		 1489 int retval;
1490
1491 /* Ignore CTRL+C signals while waiting for a debug event.
1492 FIXME: brobecker/2008-05-20: When the user presses CTRL+C while
1493 the inferior is running, both the inferior and GDB receive the
1494 associated signal. If the inferior receives the signal first
1495 and the delay until GDB receives that signal is sufficiently long,
1496 GDB can sometimes receive the SIGINT after we have unblocked
1497 the CTRL+C handler. This would lead to the debugger to stop
1498 prematurely while handling the new-thread event that comes
1499 with the handling of the SIGINT inside the inferior, and then
1500 stop again immediately when the user tries to resume the execution
1501 in the inferior. This is a classic race, and it would be nice
1502 to find a better solution to that problem. But in the meantime,
1503 the current approach already greatly mitigate this issue. */
1504 SetConsoleCtrlHandler (NULL, TRUE);
1505 retval = get_win32_debug_event (pid, ourstatus);
1506 SetConsoleCtrlHandler (NULL, FALSE);
1507
450005e7 1508 if (retval)
2dc38344 1509 return ptid_build (current_event.dwProcessId, 0, retval);
450005e7
CF		 1510 else
1511 {
1512 int detach = 0;
c906108c 1513
98bbd631
AC		 1514 if (deprecated_ui_loop_hook != NULL)
1515 detach = deprecated_ui_loop_hook (0);
7a292a7a 1516
450005e7 1517 if (detach)
3ee6f623 1518 win32_kill_inferior ();
450005e7
CF		 1519 }
1520 }
c906108c
SS		 1521}
1522
9d3789f7 1523static void
181e7f93 1524do_initial_win32_stuff (DWORD pid, int attaching)
9d3789f7
CF		 1525{
1526 extern int stop_after_trap;
fa4ba8da 1527 int i;
d6b48e9c 1528 struct inferior *inf;
2020b7ab 1529 struct thread_info *tp;
9d3789f7 1530
7393af7c 1531 last_sig = TARGET_SIGNAL_0;
9d3789f7
CF		 1532 event_count = 0;
1533 exception_count = 0;
bf25528d 1534 open_process_used = 0;
fa4ba8da 1535 debug_registers_changed = 0;
dfe7f3ac 1536 debug_registers_used = 0;
fa4ba8da
PM		 1537 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1538 dr[i] = 0;
10325bc5 1539#ifdef __CYGWIN__
de1b3c3d 1540 cygwin_load_start = cygwin_load_end = 0;
10325bc5 1541#endif
9d3789f7
CF		 1542 current_event.dwProcessId = pid;
1543 memset (&current_event, 0, sizeof (current_event));
3ee6f623 1544 push_target (&win32_ops);
cb851954 1545 disable_breakpoints_in_shlibs ();
3ee6f623 1546 win32_clear_solib ();
9d3789f7
CF		 1547 clear_proceed_status ();
1548 init_wait_for_inferior ();
1549
d6b48e9c 1550 inf = add_inferior (pid);
181e7f93 1551 inf->attach_flag = attaching;
7f9f62ba 1552
9f9d052e
PM		 1553 /* Make the new process the current inferior, so terminal handling
1554 can rely on it. When attaching, we don't know about any thread
1555 id here, but that's OK --- nothing should be referencing the
1556 current thread until we report an event out of win32_wait. */
1557 inferior_ptid = pid_to_ptid (pid);
1558
c44537cf 1559 terminal_init_inferior_with_pgrp (pid);
9d3789f7
CF		 1560 target_terminal_inferior ();
1561
d6b48e9c 1562 inf->stop_soon = STOP_QUIETLY;
9d3789f7
CF		 1563 while (1)
1564 {
1565 stop_after_trap = 1;
ae123ec6 1566 wait_for_inferior (0);
2020b7ab
PA		 1567 tp = inferior_thread ();
1568 if (tp->stop_signal != TARGET_SIGNAL_TRAP)
1569 resume (0, tp->stop_signal);
9d3789f7
CF		 1570 else
1571 break;
1572 }
eff8332b 1573
d6b48e9c 1574 inf->stop_soon = NO_STOP_QUIETLY;
9d3789f7
CF		 1575 stop_after_trap = 0;
1576 return;
1577}
1578
02cc9f49
CV		 1579/* Since Windows XP, detaching from a process is supported by Windows.
1580 The following code tries loading the appropriate functions dynamically.
1581 If loading these functions succeeds use them to actually detach from
1582 the inferior process, otherwise behave as usual, pretending that
1583 detach has worked. */
1584static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
1585static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
1586
1587static int
5ae5f592 1588has_detach_ability (void)
02cc9f49
CV		 1589{
1590 static HMODULE kernel32 = NULL;
1591
1592 if (!kernel32)
1593 kernel32 = LoadLibrary ("kernel32.dll");
1594 if (kernel32)
1595 {
1596 if (!DebugSetProcessKillOnExit)
1597 DebugSetProcessKillOnExit = GetProcAddress (kernel32,
1598 "DebugSetProcessKillOnExit");
1599 if (!DebugActiveProcessStop)
1600 DebugActiveProcessStop = GetProcAddress (kernel32,
1601 "DebugActiveProcessStop");
1602 if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
1603 return 1;
1604 }
1605 return 0;
1606}
c906108c 1607
616a9dc4
CV		 1608/* Try to set or remove a user privilege to the current process. Return -1
1609 if that fails, the previous setting of that privilege otherwise.
1610
1611 This code is copied from the Cygwin source code and rearranged to allow
1612 dynamically loading of the needed symbols from advapi32 which is only
1613 available on NT/2K/XP. */
1614static int
1615set_process_privilege (const char *privilege, BOOL enable)
1616{
1617 static HMODULE advapi32 = NULL;
1618 static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
1619 static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID);
1620 static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
1621 DWORD, PTOKEN_PRIVILEGES, PDWORD);
1622
1623 HANDLE token_hdl = NULL;
1624 LUID restore_priv;
1625 TOKEN_PRIVILEGES new_priv, orig_priv;
1626 int ret = -1;
1627 DWORD size;
1628
1629 if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */
1630 return 0;
1631
1632 if (!advapi32)
1633 {
1634 if (!(advapi32 = LoadLibrary ("advapi32.dll")))
1635 goto out;
1636 if (!OpenProcessToken)
1637 OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
1638 if (!LookupPrivilegeValue)
1639 LookupPrivilegeValue = GetProcAddress (advapi32,
1640 "LookupPrivilegeValueA");
1641 if (!AdjustTokenPrivileges)
1642 AdjustTokenPrivileges = GetProcAddress (advapi32,
1643 "AdjustTokenPrivileges");
1644 if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
295732ea 1645 {
616a9dc4
CV		 1646 advapi32 = NULL;
1647 goto out;
1648 }
1649 }
295732ea 1650
616a9dc4
CV		 1651 if (!OpenProcessToken (GetCurrentProcess (),
1652 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1653 &token_hdl))
1654 goto out;
1655
1656 if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
1657 goto out;
1658
1659 new_priv.PrivilegeCount = 1;
1660 new_priv.Privileges[0].Luid = restore_priv;
1661 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1662
1663 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
295732ea 1664 sizeof orig_priv, &orig_priv, &size))
616a9dc4
CV		 1665 goto out;
1666#if 0
1667 /* Disabled, otherwise every `attach' in an unprivileged user session
1668 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
3ee6f623 1669 win32_attach(). */
616a9dc4
CV		 1670 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1671 be enabled. GetLastError () returns an correct error code, though. */
1672 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1673 goto out;
1674#endif
1675
1676 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1677
1678out:
1679 if (token_hdl)
1680 CloseHandle (token_hdl);
1681
1682 return ret;
1683}
1684
02cc9f49 1685/* Attach to process PID, then initialize for debugging it. */
c906108c 1686static void
3ee6f623 1687win32_attach (char *args, int from_tty)
c906108c
SS		 1688{
1689 BOOL ok;
559e75c0 1690 DWORD pid;
c906108c
SS		 1691
1692 if (!args)
e2e0b3e5 1693 error_no_arg (_("process-id to attach"));
c906108c 1694
616a9dc4
CV		 1695 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1696 {
1697 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1698 printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
1699 }
1700
baa93fa6
CF		 1701 pid = strtoul (args, 0, 0); /* Windows pid */
1702
3ee6f623 1703 win32_init_thread_list ();
9d3789f7 1704 ok = DebugActiveProcess (pid);
91a175b3 1705 saw_create = 0;
c906108c 1706
10325bc5 1707#ifdef __CYGWIN__
c906108c 1708 if (!ok)
baa93fa6
CF		 1709 {
1710 /* Try fall back to Cygwin pid */
1711 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1712
1713 if (pid > 0)
1714 ok = DebugActiveProcess (pid);
10325bc5
PA		 1715 }
1716#endif
baa93fa6 1717
10325bc5
PA		 1718 if (!ok)
1719 error (_("Can't attach to process."));
c906108c 1720
02cc9f49 1721 if (has_detach_ability ())
3ade5333
CF		 1722 DebugSetProcessKillOnExit (FALSE);
1723
c906108c
SS		 1724 if (from_tty)
1725 {
1726 char *exec_file = (char *) get_exec_file (0);
1727
1728 if (exec_file)
1729 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
39f77062 1730 target_pid_to_str (pid_to_ptid (pid)));
c906108c
SS		 1731 else
1732 printf_unfiltered ("Attaching to %s\n",
39f77062 1733 target_pid_to_str (pid_to_ptid (pid)));
c906108c
SS		 1734
1735 gdb_flush (gdb_stdout);
1736 }
1737
181e7f93 1738 do_initial_win32_stuff (pid, 1);
9d3789f7 1739 target_terminal_ours ();
c906108c
SS		 1740}
1741
1742static void
3ee6f623 1743win32_detach (char *args, int from_tty)
c906108c 1744{
02cc9f49
CV		 1745 int detached = 1;
1746
1747 if (has_detach_ability ())
1748 {
96998ce7
PA		 1749 ptid_t ptid = {-1};
1750 win32_resume (ptid, 0, TARGET_SIGNAL_0);
1751
02cc9f49 1752 if (!DebugActiveProcessStop (current_event.dwProcessId))
3bccec63 1753 {
8a3fe4f8 1754 error (_("Can't detach process %lu (error %lu)"),
02cc9f49
CV		 1755 current_event.dwProcessId, GetLastError ());
1756 detached = 0;
3bccec63 1757 }
02cc9f49
CV		 1758 DebugSetProcessKillOnExit (FALSE);
1759 }
1760 if (detached && from_tty)
c906108c
SS		 1761 {
1762 char *exec_file = get_exec_file (0);
1763 if (exec_file == 0)
1764 exec_file = "";
02cc9f49
CV		 1765 printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
1766 current_event.dwProcessId);
c906108c
SS		 1767 gdb_flush (gdb_stdout);
1768 }
7f9f62ba 1769
39f77062 1770 inferior_ptid = null_ptid;
7f9f62ba
PA		 1771 detach_inferior (current_event.dwProcessId);
1772
3ee6f623 1773 unpush_target (&win32_ops);
c906108c
SS		 1774}
1775
3ee6f623
CF		 1776static char *
1777win32_pid_to_exec_file (int pid)
47216e51 1778{
47216e51 1779 static char path[MAX_PATH + 1];
10325bc5
PA		 1780
1781#ifdef __CYGWIN__
33605d39
CF		 1782 /* Try to find exe name as symlink target of /proc/<pid>/exe */
1783 int nchars;
1784 char procexe[sizeof ("/proc/4294967295/exe")];
2dc38344 1785 sprintf (procexe, "/proc/%u/exe", pid);
33605d39
CF		 1786 nchars = readlink (procexe, path, sizeof(path));
1787 if (nchars > 0 && nchars < sizeof (path))
47216e51 1788 {
33605d39
CF		 1789 path[nchars] = '\0'; /* Got it */
1790 return path;
47216e51 1791 }
10325bc5
PA		 1792#endif
1793
33605d39
CF		 1794 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
1795 of gdb, or we're trying to debug a non-Cygwin windows executable. */
1796 if (!get_module_name (0, path))
1797 path[0] = '\0';
1798
1799 return path;
47216e51
CV		 1800}
1801
c906108c
SS		 1802/* Print status information about what we're accessing. */
1803
1804static void
3ee6f623 1805win32_files_info (struct target_ops *ignore)
c906108c 1806{
181e7f93
PA		 1807 struct inferior *inf = current_inferior ();
1808
c906108c 1809 printf_unfiltered ("\tUsing the running image of %s %s.\n",
181e7f93
PA		 1810 inf->attach_flag ? "attached" : "child",
1811 target_pid_to_str (inferior_ptid));
c906108c
SS		 1812}
1813
c906108c 1814static void
3ee6f623 1815win32_open (char *arg, int from_tty)
c906108c 1816{
8a3fe4f8 1817 error (_("Use the \"run\" command to start a Unix child process."));
c906108c
SS		 1818}
1819
39f77062 1820/* Start an inferior win32 child process and sets inferior_ptid to its pid.
c906108c
SS		 1821 EXEC_FILE is the file to run.
1822 ALLARGS is a string containing the arguments to the program.
1823 ENV is the environment vector to pass. Errors reported with error(). */
1824
1825static void
8efc5725 1826win32_create_inferior (char *exec_file, char *allargs, char **in_env,
c27cda74 1827 int from_tty)
c906108c 1828{
c906108c
SS		 1829 STARTUPINFO si;
1830 PROCESS_INFORMATION pi;
c906108c
SS		 1831 BOOL ret;
1832 DWORD flags;
1833 char *args;
dfe7f3ac
CF		 1834 char real_path[MAXPATHLEN];
1835 char *toexec;
349b409f
CF		 1836 char shell[MAX_PATH + 1]; /* Path to shell */
1837 const char *sh;
2becadee
CF		 1838 int tty;
1839 int ostdin, ostdout, ostderr;
3cb3b8df 1840 const char *inferior_io_terminal = get_inferior_io_terminal ();
c906108c
SS		 1841
1842 if (!exec_file)
8a3fe4f8 1843 error (_("No executable specified, use `target exec'."));
c906108c
SS		 1844
1845 memset (&si, 0, sizeof (si));
1846 si.cb = sizeof (si);
1847
10325bc5 1848#ifdef __CYGWIN__
349b409f 1849 if (!useshell)
dfe7f3ac
CF		 1850 {
1851 flags = DEBUG_ONLY_THIS_PROCESS;
1852 cygwin_conv_to_win32_path (exec_file, real_path);
1853 toexec = real_path;
1854 }
1855 else
1856 {
349b409f
CF		 1857 char *newallargs;
1858 sh = getenv ("SHELL");
1859 if (!sh)
1860 sh = "/bin/sh";
1861 cygwin_conv_to_win32_path (sh, shell);
1862 newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
1863 + strlen (allargs) + 2);
dfe7f3ac
CF		 1864 sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
1865 allargs = newallargs;
1866 toexec = shell;
1867 flags = DEBUG_PROCESS;
1868 }
10325bc5
PA		 1869#else
1870 toexec = exec_file;
1871 flags = DEBUG_ONLY_THIS_PROCESS;
1872#endif
c906108c 1873
eeb25b8a
PM		 1874 if (new_group)
1875 flags |= CREATE_NEW_PROCESS_GROUP;
1876
1877 if (new_console)
1878 flags |= CREATE_NEW_CONSOLE;
1879
dfe7f3ac
CF		 1880 args = alloca (strlen (toexec) + strlen (allargs) + 2);
1881 strcpy (args, toexec);
c906108c
SS		 1882 strcat (args, " ");
1883 strcat (args, allargs);
1884
10325bc5 1885#ifdef __CYGWIN__
c906108c 1886 /* Prepare the environment vars for CreateProcess. */
002c07a9 1887 cygwin_internal (CW_SYNC_WINENV);
c906108c 1888
2becadee
CF		 1889 if (!inferior_io_terminal)
1890 tty = ostdin = ostdout = ostderr = -1;
1891 else
1892 {
1893 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
1894 if (tty < 0)
1895 {
1896 print_sys_errmsg (inferior_io_terminal, errno);
1897 ostdin = ostdout = ostderr = -1;
1898 }
1899 else
1900 {
1901 ostdin = dup (0);
1902 ostdout = dup (1);
1903 ostderr = dup (2);
1904 dup2 (tty, 0);
1905 dup2 (tty, 1);
1906 dup2 (tty, 2);
1907 }
1908 }
10325bc5 1909#endif
2becadee 1910
3ee6f623 1911 win32_init_thread_list ();
c906108c 1912 ret = CreateProcess (0,
c5aa993b 1913 args, /* command line */
c906108c
SS		 1914 NULL, /* Security */
1915 NULL, /* thread */
1916 TRUE, /* inherit handles */
1917 flags, /* start flags */
002c07a9 1918 NULL, /* environment */
c906108c
SS		 1919 NULL, /* current directory */
1920 &si,
1921 &pi);
10325bc5
PA		 1922
1923#ifdef __CYGWIN__
2becadee
CF		 1924 if (tty >= 0)
1925 {
1926 close (tty);
1927 dup2 (ostdin, 0);
1928 dup2 (ostdout, 1);
1929 dup2 (ostderr, 2);
1930 close (ostdin);
1931 close (ostdout);
1932 close (ostderr);
1933 }
10325bc5 1934#endif
2becadee 1935
c906108c 1936 if (!ret)
8a3fe4f8
AC		 1937 error (_("Error creating process %s, (error %d)."),
1938 exec_file, (unsigned) GetLastError ());
c906108c 1939
c1766e7d
PM		 1940 CloseHandle (pi.hThread);
1941 CloseHandle (pi.hProcess);
1942
dfe7f3ac
CF		 1943 if (useshell && shell[0] != '\0')
1944 saw_create = -1;
1945 else
1946 saw_create = 0;
1947
181e7f93 1948 do_initial_win32_stuff (pi.dwProcessId, 0);
ed9a39eb 1949
3ee6f623 1950 /* win32_continue (DBG_CONTINUE, -1); */
c906108c
SS		 1951}
1952
1953static void
3ee6f623 1954win32_mourn_inferior (void)
c906108c 1955{
3ee6f623 1956 (void) win32_continue (DBG_CONTINUE, -1);
fa4ba8da 1957 i386_cleanup_dregs();
bf25528d
CF		 1958 if (open_process_used)
1959 {
1960 CHECK (CloseHandle (current_process_handle));
1961 open_process_used = 0;
1962 }
3ee6f623 1963 unpush_target (&win32_ops);
c906108c
SS		 1964 generic_mourn_inferior ();
1965}
1966
1967/* Send a SIGINT to the process group. This acts just like the user typed a
1968 ^C on the controlling terminal. */
1969
1970static void
f9c72d52 1971win32_stop (ptid_t ptid)
c906108c
SS		 1972{
1973 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
c2d11a7d 1974 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
c5aa993b 1975 registers_changed (); /* refresh register state */
c906108c
SS		 1976}
1977
3ee6f623
CF		 1978static int
1979win32_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
0a65a603
AC		 1980 int write, struct mem_attrib *mem,
1981 struct target_ops *target)
c906108c 1982{
6f17862b 1983 DWORD done = 0;
c906108c
SS		 1984 if (write)
1985 {
29fe111d 1986 DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
2c647436
PM		 1987 len, (DWORD) (uintptr_t) memaddr));
1988 if (!WriteProcessMemory (current_process_handle,
1989 (LPVOID) (uintptr_t) memaddr, our,
6f17862b
CF		 1990 len, &done))
1991 done = 0;
2c647436
PM		 1992 FlushInstructionCache (current_process_handle,
1993 (LPCVOID) (uintptr_t) memaddr, len);
c906108c
SS		 1994 }
1995 else
1996 {
29fe111d 1997 DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
2c647436
PM		 1998 len, (DWORD) (uintptr_t) memaddr));
1999 if (!ReadProcessMemory (current_process_handle,
2000 (LPCVOID) (uintptr_t) memaddr, our,
6f17862b
CF		 2001 len, &done))
2002 done = 0;
c906108c
SS		 2003 }
2004 return done;
2005}
2006
3ee6f623
CF		 2007static void
2008win32_kill_inferior (void)
c906108c
SS		 2009{
2010 CHECK (TerminateProcess (current_process_handle, 0));
2011
2012 for (;;)
2013 {
3ee6f623 2014 if (!win32_continue (DBG_CONTINUE, -1))
c906108c
SS		 2015 break;
2016 if (!WaitForDebugEvent (&current_event, INFINITE))
2017 break;
2018 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
2019 break;
2020 }
2021
3ee6f623 2022 target_mourn_inferior (); /* or just win32_mourn_inferior? */
c906108c
SS		 2023}
2024
c906108c 2025static void
316f2060 2026win32_prepare_to_store (struct regcache *regcache)
c906108c
SS		 2027{
2028 /* Do nothing, since we can store individual regs */
2029}
2030
2031static int
3ee6f623 2032win32_can_run (void)
c906108c
SS		 2033{
2034 return 1;
2035}
2036
2037static void
3ee6f623 2038win32_close (int x)
c906108c 2039{
3ee6f623 2040 DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n",
3bccec63 2041 PIDGET (inferior_ptid)));
c906108c
SS		 2042}
2043
3ee6f623
CF		 2044/* Convert pid to printable format. */
2045static char *
10325bc5 2046win32_pid_to_str (ptid_t ptid)
c906108c 2047{
3ee6f623 2048 static char buf[80];
3ee6f623 2049
2dc38344
PA		 2050 if (ptid_get_tid (ptid) != 0)
2051 {
2052 snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
2053 ptid_get_pid (ptid), ptid_get_tid (ptid));
2054 return buf;
2055 }
2056
2057 return normal_pid_to_str (ptid);
3ee6f623
CF		 2058}
2059
de1b3c3d
PA		 2060static LONGEST
2061win32_xfer_shared_libraries (struct target_ops *ops,
2062 enum target_object object, const char *annex,
2063 gdb_byte *readbuf, const gdb_byte *writebuf,
2064 ULONGEST offset, LONGEST len)
3cb8e7f6 2065{
de1b3c3d
PA		 2066 struct obstack obstack;
2067 const char *buf;
2068 LONGEST len_avail;
3cb8e7f6 2069 struct so_list *so;
3cb8e7f6 2070
de1b3c3d
PA		 2071 if (writebuf)
2072 return -1;
3cb8e7f6 2073
de1b3c3d
PA		 2074 obstack_init (&obstack);
2075 obstack_grow_str (&obstack, "<library-list>\n");
2076 for (so = solib_start.next; so; so = so->next)
2077 win32_xfer_shared_library (so->so_name, so->lm_info->load_addr, &obstack);
2078 obstack_grow_str0 (&obstack, "</library-list>\n");
3cb8e7f6 2079
de1b3c3d
PA		 2080 buf = obstack_finish (&obstack);
2081 len_avail = strlen (buf);
2082 if (offset >= len_avail)
2083 return 0;
3cb8e7f6 2084
de1b3c3d
PA		 2085 if (len > len_avail - offset)
2086 len = len_avail - offset;
2087 memcpy (readbuf, buf + offset, len);
3cb8e7f6 2088
de1b3c3d
PA		 2089 obstack_free (&obstack, NULL);
2090 return len;
3cb8e7f6
CF		 2091}
2092
de1b3c3d
PA		 2093static LONGEST
2094win32_xfer_partial (struct target_ops *ops, enum target_object object,
2095 const char *annex, gdb_byte *readbuf,
2096 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
3cb8e7f6 2097{
de1b3c3d 2098 switch (object)
3cb8e7f6 2099 {
de1b3c3d
PA		 2100 case TARGET_OBJECT_MEMORY:
2101 if (readbuf)
2102 return (*ops->deprecated_xfer_memory) (offset, readbuf,
244e85c8 2103 len, 0/*read*/, NULL, ops);
de1b3c3d
PA		 2104 if (writebuf)
2105 return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
2106 len, 1/*write*/, NULL, ops);
2107 return -1;
2108
2109 case TARGET_OBJECT_LIBRARIES:
2110 return win32_xfer_shared_libraries (ops, object, annex, readbuf,
2111 writebuf, offset, len);
3929abe9 2112
de1b3c3d
PA		 2113 default:
2114 if (ops->beneath != NULL)
2115 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
2116 readbuf, writebuf, offset, len);
2117 return -1;
3929abe9 2118 }
02c5aecd
CF		 2119}
2120
3ee6f623
CF		 2121static void
2122init_win32_ops (void)
2123{
2124 win32_ops.to_shortname = "child";
2125 win32_ops.to_longname = "Win32 child process";
2126 win32_ops.to_doc = "Win32 child process (started by the \"run\" command).";
2127 win32_ops.to_open = win32_open;
2128 win32_ops.to_close = win32_close;
2129 win32_ops.to_attach = win32_attach;
dc177b7a 2130 win32_ops.to_attach_no_wait = 1;
3ee6f623
CF		 2131 win32_ops.to_detach = win32_detach;
2132 win32_ops.to_resume = win32_resume;
2133 win32_ops.to_wait = win32_wait;
2134 win32_ops.to_fetch_registers = win32_fetch_inferior_registers;
2135 win32_ops.to_store_registers = win32_store_inferior_registers;
2136 win32_ops.to_prepare_to_store = win32_prepare_to_store;
2137 win32_ops.deprecated_xfer_memory = win32_xfer_memory;
de1b3c3d 2138 win32_ops.to_xfer_partial = win32_xfer_partial;
3ee6f623
CF		 2139 win32_ops.to_files_info = win32_files_info;
2140 win32_ops.to_insert_breakpoint = memory_insert_breakpoint;
2141 win32_ops.to_remove_breakpoint = memory_remove_breakpoint;
2142 win32_ops.to_terminal_init = terminal_init_inferior;
2143 win32_ops.to_terminal_inferior = terminal_inferior;
2144 win32_ops.to_terminal_ours_for_output = terminal_ours_for_output;
2145 win32_ops.to_terminal_ours = terminal_ours;
2146 win32_ops.to_terminal_save_ours = terminal_save_ours;
2147 win32_ops.to_terminal_info = child_terminal_info;
2148 win32_ops.to_kill = win32_kill_inferior;
2149 win32_ops.to_create_inferior = win32_create_inferior;
2150 win32_ops.to_mourn_inferior = win32_mourn_inferior;
2151 win32_ops.to_can_run = win32_can_run;
2152 win32_ops.to_thread_alive = win32_win32_thread_alive;
10325bc5 2153 win32_ops.to_pid_to_str = win32_pid_to_str;
3ee6f623
CF		 2154 win32_ops.to_stop = win32_stop;
2155 win32_ops.to_stratum = process_stratum;
2156 win32_ops.to_has_all_memory = 1;
2157 win32_ops.to_has_memory = 1;
2158 win32_ops.to_has_stack = 1;
2159 win32_ops.to_has_registers = 1;
2160 win32_ops.to_has_execution = 1;
3ee6f623 2161 win32_ops.to_pid_to_exec_file = win32_pid_to_exec_file;
2dc38344 2162 win32_ops.to_magic = OPS_MAGIC;
c906108c
SS		 2163}
2164
3929abe9
CF		 2165static void
2166set_win32_aliases (char *argv0)
2167{
2168 add_info_alias ("dll", "sharedlibrary", 1);
2169}
2170
c906108c 2171void
a6b6b089 2172_initialize_win32_nat (void)
c906108c 2173{
fa58ee11
EZ		 2174 struct cmd_list_element *c;
2175
3ee6f623 2176 init_win32_ops ();
c906108c 2177
fa58ee11 2178 c = add_com ("dll-symbols", class_files, dll_symbol_command,
1bedd215 2179 _("Load dll library symbols from FILE."));
5ba2abeb 2180 set_cmd_completer (c, filename_completer);
450005e7
CF		 2181
2182 add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
2183
10325bc5 2184#ifdef __CYGWIN__
5bf193a2
AC		 2185 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
2186Set use of shell to start subprocess."), _("\
2187Show use of shell to start subprocess."), NULL,
2188 NULL,
2189 NULL, /* FIXME: i18n: */
2190 &setlist, &showlist);
2191
09280ddf
CF		 2192 add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\
2193Break when an exception is detected in the Cygwin DLL itself."), _("\
2194Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
2195 NULL,
2196 NULL, /* FIXME: i18n: */
2197 &setlist, &showlist);
10325bc5 2198#endif
09280ddf 2199
5bf193a2
AC		 2200 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
2201Set creation of new console when creating child process."), _("\
2202Show creation of new console when creating child process."), NULL,
2203 NULL,
2204 NULL, /* FIXME: i18n: */
2205 &setlist, &showlist);
2206
2207 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
2208Set creation of new group when creating child process."), _("\
2209Show creation of new group when creating child process."), NULL,
2210 NULL,
2211 NULL, /* FIXME: i18n: */
2212 &setlist, &showlist);
2213
2214 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
2215Set whether to display execution in child process."), _("\
2216Show whether to display execution in child process."), NULL,
2217 NULL,
2218 NULL, /* FIXME: i18n: */
2219 &setlist, &showlist);
2220
2221 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
2222Set whether to display kernel events in child process."), _("\
2223Show whether to display kernel events in child process."), NULL,
2224 NULL,
2225 NULL, /* FIXME: i18n: */
2226 &setlist, &showlist);
2227
2228 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
2229Set whether to display memory accesses in child process."), _("\
2230Show whether to display memory accesses in child process."), NULL,
2231 NULL,
2232 NULL, /* FIXME: i18n: */
2233 &setlist, &showlist);
2234
2235 add_setshow_boolean_cmd ("debugexceptions", class_support,
2236 &debug_exceptions, _("\
2237Set whether to display kernel exceptions in child process."), _("\
2238Show whether to display kernel exceptions in child process."), NULL,
2239 NULL,
2240 NULL, /* FIXME: i18n: */
2241 &setlist, &showlist);
c906108c 2242
c1748f97 2243 add_prefix_cmd ("w32", class_info, info_w32_command,
1bedd215 2244 _("Print information specific to Win32 debugging."),
baa93fa6 2245 &info_w32_cmdlist, "info w32 ", 0, &infolist);
c1748f97
PM		 2246
2247 add_cmd ("selector", class_info, display_selectors,
1a966eab 2248 _("Display selectors infos."),
c1748f97 2249 &info_w32_cmdlist);
3ee6f623 2250 add_target (&win32_ops);
3929abe9 2251 deprecated_init_ui_hook = set_win32_aliases;
c906108c
SS		 2252}
2253
fa4ba8da
PM		 2254/* Hardware watchpoint support, adapted from go32-nat.c code. */
2255
2256/* Pass the address ADDR to the inferior in the I'th debug register.
2257 Here we just store the address in dr array, the registers will be
3ee6f623 2258 actually set up when win32_continue is called. */
fa4ba8da
PM		 2259void
2260cygwin_set_dr (int i, CORE_ADDR addr)
2261{
2262 if (i < 0 || i > 3)
2263 internal_error (__FILE__, __LINE__,
e2e0b3e5 2264 _("Invalid register %d in cygwin_set_dr.\n"), i);
fa4ba8da
PM		 2265 dr[i] = (unsigned) addr;
2266 debug_registers_changed = 1;
2267 debug_registers_used = 1;
2268}
2269
2270/* Pass the value VAL to the inferior in the DR7 debug control
2271 register. Here we just store the address in D_REGS, the watchpoint
3ee6f623 2272 will be actually set up in win32_wait. */
fa4ba8da
PM		 2273void
2274cygwin_set_dr7 (unsigned val)
2275{
2276 dr[7] = val;
2277 debug_registers_changed = 1;
2278 debug_registers_used = 1;
2279}
2280
2281/* Get the value of the DR6 debug status register from the inferior.
2282 Here we just return the value stored in dr[6]
2283 by the last call to thread_rec for current_event.dwThreadId id. */
2284unsigned
2285cygwin_get_dr6 (void)
2286{
2287 return dr[6];
2288}
2289
2dc38344 2290/* Determine if the thread referenced by "ptid" is alive
c906108c 2291 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
2dc38344 2292 it means that the thread has died. Otherwise it is assumed to be alive. */
c906108c 2293static int
3ee6f623 2294win32_win32_thread_alive (ptid_t ptid)
c906108c 2295{
2dc38344
PA		 2296 int tid;
2297
2298 gdb_assert (ptid_get_tid (ptid) != 0);
2299 tid = ptid_get_tid (ptid);
39f77062 2300
2dc38344 2301 return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
c5aa993b 2302 FALSE : TRUE;
c906108c
SS		 2303}
2304
2a3d5645
CF		 2305void
2306_initialize_check_for_gdb_ini (void)
2307{
2308 char *homedir;
2309 if (inhibit_gdbinit)
2310 return;
2311
2312 homedir = getenv ("HOME");
2313 if (homedir)
2314 {
2315 char *p;
2316 char *oldini = (char *) alloca (strlen (homedir) +
2317 sizeof ("/gdb.ini"));
2318 strcpy (oldini, homedir);
2319 p = strchr (oldini, '\0');
2320 if (p > oldini && p[-1] != '/')
2321 *p++ = '/';
2322 strcpy (p, "gdb.ini");
2323 if (access (oldini, 0) == 0)
2324 {
2325 int len = strlen (oldini);
2326 char *newini = alloca (len + 1);
dfe7f3ac 2327 sprintf (newini, "%.*s.gdbinit",
58fa08f0 2328 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
8a3fe4f8 2329 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
2a3d5645
CF		 2330 }
2331 }
2332}
33605d39
CF		 2333
2334void
2335_initialize_psapi (void)
2336{
2337 /* Load optional functions used for retrieving filename information
2338 associated with the currently debugged process or its dlls. */
2339 if (!psapi_loaded)
2340 {
2341 HMODULE psapi_module_handle;
2342
2343 psapi_loaded = -1;
2344
2345 psapi_module_handle = LoadLibrary ("psapi.dll");
2346 if (psapi_module_handle)
2347 {
2348 psapi_EnumProcessModules = (void *) GetProcAddress (psapi_module_handle, "EnumProcessModules");
2349 psapi_GetModuleInformation = (void *) GetProcAddress (psapi_module_handle, "GetModuleInformation");
2350 psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, "GetModuleFileNameExA");
2351
2352 if (psapi_EnumProcessModules != NULL
2353 && psapi_GetModuleInformation != NULL
2354 && psapi_GetModuleFileNameExA != NULL)
2355 psapi_loaded = 1;
2356 }
2357 }
2358
2359 /* This will probably fail on Windows 9x/Me. Let the user know that we're
2360 missing some functionality. */
2361 if (psapi_loaded < 0)
2362 warning(_("cannot automatically find executable file or library to read symbols. Use \"file\" or \"dll\" command to load executable/libraries directly."));
2363}
GDB Binutils - Deliverables
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