Commit | Line | Data |
---|---|---|
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, |
6aba47ca | 4 | 2005, 2006, 2007 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 | 50 | #include "gdb_string.h" |
2c647436 | 51 | #include "gdb_stdint.h" |
c906108c SS |
52 | #include "gdbthread.h" |
53 | #include "gdbcmd.h" | |
54 | #include <sys/param.h> | |
c2d11a7d | 55 | #include <unistd.h> |
4646aa9d | 56 | #include "exec.h" |
3ee6f623 | 57 | #include "solist.h" |
3cb8e7f6 | 58 | #include "solib.h" |
de1b3c3d | 59 | #include "xml-support.h" |
c906108c | 60 | |
6c7de422 MK |
61 | #include "i386-tdep.h" |
62 | #include "i387-tdep.h" | |
63 | ||
de1b3c3d PA |
64 | #include "i386-cygwin-tdep.h" |
65 | ||
3ee6f623 | 66 | static struct target_ops win32_ops; |
3ee6f623 | 67 | |
10325bc5 | 68 | #ifdef __CYGWIN__ |
a244bdca CF |
69 | /* The starting and ending address of the cygwin1.dll text segment. */ |
70 | static bfd_vma cygwin_load_start; | |
71 | static bfd_vma cygwin_load_end; | |
10325bc5 | 72 | #endif |
a244bdca CF |
73 | |
74 | static int have_saved_context; /* True if we've saved context from a cygwin signal. */ | |
75 | static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */ | |
76 | ||
7a292a7a SS |
77 | /* If we're not using the old Cygwin header file set, define the |
78 | following which never should have been in the generic Win32 API | |
79 | headers in the first place since they were our own invention... */ | |
80 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 81 | enum |
8e860359 CF |
82 | { |
83 | FLAG_TRACE_BIT = 0x100, | |
84 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
85 | }; | |
7a292a7a | 86 | #endif |
8e860359 | 87 | #include <psapi.h> |
7a292a7a | 88 | |
fa4ba8da PM |
89 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
90 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 91 | |
fa4ba8da | 92 | static unsigned dr[8]; |
87a45c96 CF |
93 | static int debug_registers_changed; |
94 | static int debug_registers_used; | |
6537bb24 | 95 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 96 | |
c906108c SS |
97 | /* The string sent by cygwin when it processes a signal. |
98 | FIXME: This should be in a cygwin include file. */ | |
3929abe9 CF |
99 | #ifndef _CYGWIN_SIGNAL_STRING |
100 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
101 | #endif | |
c906108c | 102 | |
29fe111d | 103 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 104 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
105 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
106 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
107 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
c906108c | 108 | |
3ee6f623 CF |
109 | static void win32_stop (void); |
110 | static int win32_win32_thread_alive (ptid_t); | |
111 | static void win32_kill_inferior (void); | |
c906108c | 112 | |
7393af7c PM |
113 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
114 | /* Set if a signal was received from the debugged process */ | |
115 | ||
c906108c | 116 | /* Thread information structure used to track information that is |
6537bb24 | 117 | not available in gdb's thread structure. */ |
c906108c | 118 | typedef struct thread_info_struct |
c5aa993b JM |
119 | { |
120 | struct thread_info_struct *next; | |
121 | DWORD id; | |
122 | HANDLE h; | |
123 | char *name; | |
6537bb24 | 124 | int suspended; |
3ade5333 | 125 | int reload_context; |
c5aa993b | 126 | CONTEXT context; |
c2d11a7d | 127 | STACKFRAME sf; |
8e860359 CF |
128 | } |
129 | thread_info; | |
c2d11a7d | 130 | |
29fe111d | 131 | static thread_info thread_head; |
c906108c | 132 | |
c906108c SS |
133 | /* The process and thread handles for the above context. */ |
134 | ||
135 | static DEBUG_EVENT current_event; /* The current debug event from | |
136 | WaitForDebugEvent */ | |
137 | static HANDLE current_process_handle; /* Currently executing process */ | |
138 | static thread_info *current_thread; /* Info on currently selected thread */ | |
349b409f | 139 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
c906108c SS |
140 | |
141 | /* Counts of things. */ | |
142 | static int exception_count = 0; | |
143 | static int event_count = 0; | |
dfe7f3ac | 144 | static int saw_create; |
bf25528d | 145 | static int open_process_used = 0; |
c906108c SS |
146 | |
147 | /* User options. */ | |
148 | static int new_console = 0; | |
10325bc5 | 149 | #ifdef __CYGWIN__ |
09280ddf | 150 | static int cygwin_exceptions = 0; |
10325bc5 | 151 | #endif |
c2d11a7d | 152 | static int new_group = 1; |
dfe7f3ac CF |
153 | static int debug_exec = 0; /* show execution */ |
154 | static int debug_events = 0; /* show events from kernel */ | |
155 | static int debug_memory = 0; /* show target memory accesses */ | |
c906108c | 156 | static int debug_exceptions = 0; /* show target exceptions */ |
dfe7f3ac CF |
157 | static int useshell = 0; /* use shell for subprocesses */ |
158 | ||
c906108c SS |
159 | /* This vector maps GDB's idea of a register's number into an address |
160 | in the win32 exception context vector. | |
161 | ||
162 | It also contains the bit mask needed to load the register in question. | |
163 | ||
164 | One day we could read a reg, we could inspect the context we | |
165 | already have loaded, if it doesn't have the bit set that we need, | |
166 | we read that set of registers in using GetThreadContext. If the | |
167 | context already contains what we need, we just unpack it. Then to | |
168 | write a register, first we have to ensure that the context contains | |
169 | the other regs of the group, and then we copy the info in and set | |
170 | out bit. */ | |
171 | ||
172 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) | |
173 | static const int mappings[] = | |
174 | { | |
c5aa993b JM |
175 | context_offset (Eax), |
176 | context_offset (Ecx), | |
177 | context_offset (Edx), | |
178 | context_offset (Ebx), | |
179 | context_offset (Esp), | |
180 | context_offset (Ebp), | |
181 | context_offset (Esi), | |
182 | context_offset (Edi), | |
183 | context_offset (Eip), | |
184 | context_offset (EFlags), | |
185 | context_offset (SegCs), | |
186 | context_offset (SegSs), | |
187 | context_offset (SegDs), | |
188 | context_offset (SegEs), | |
189 | context_offset (SegFs), | |
190 | context_offset (SegGs), | |
191 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
192 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
193 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
194 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
195 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
196 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
197 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
198 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
c2d11a7d JM |
199 | context_offset (FloatSave.ControlWord), |
200 | context_offset (FloatSave.StatusWord), | |
201 | context_offset (FloatSave.TagWord), | |
202 | context_offset (FloatSave.ErrorSelector), | |
203 | context_offset (FloatSave.ErrorOffset), | |
204 | context_offset (FloatSave.DataSelector), | |
205 | context_offset (FloatSave.DataOffset), | |
ed9a39eb | 206 | context_offset (FloatSave.ErrorSelector) |
97da3b20 | 207 | /* XMM0-7 */ , |
441532d7 PM |
208 | context_offset (ExtendedRegisters[10*16]), |
209 | context_offset (ExtendedRegisters[11*16]), | |
210 | context_offset (ExtendedRegisters[12*16]), | |
211 | context_offset (ExtendedRegisters[13*16]), | |
212 | context_offset (ExtendedRegisters[14*16]), | |
213 | context_offset (ExtendedRegisters[15*16]), | |
214 | context_offset (ExtendedRegisters[16*16]), | |
215 | context_offset (ExtendedRegisters[17*16]), | |
216 | /* MXCSR */ | |
217 | context_offset (ExtendedRegisters[24]) | |
c906108c SS |
218 | }; |
219 | ||
ed9a39eb JM |
220 | #undef context_offset |
221 | ||
c906108c SS |
222 | /* This vector maps the target's idea of an exception (extracted |
223 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
224 | ||
225 | struct xlate_exception | |
226 | { | |
227 | int them; | |
228 | enum target_signal us; | |
229 | }; | |
230 | ||
231 | static const struct xlate_exception | |
232 | xlate[] = | |
233 | { | |
234 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
235 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, | |
236 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, | |
237 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
238 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
7393af7c | 239 | {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE}, |
c906108c SS |
240 | {-1, -1}}; |
241 | ||
fa4ba8da PM |
242 | static void |
243 | check (BOOL ok, const char *file, int line) | |
244 | { | |
245 | if (!ok) | |
dfe7f3ac | 246 | printf_filtered ("error return %s:%d was %lu\n", file, line, |
fa4ba8da PM |
247 | GetLastError ()); |
248 | } | |
249 | ||
6537bb24 PA |
250 | /* Find a thread record given a thread id. If GET_CONTEXT is not 0, |
251 | then also retrieve the context for this thread. If GET_CONTEXT is | |
252 | negative, then don't suspend the thread. */ | |
c906108c SS |
253 | static thread_info * |
254 | thread_rec (DWORD id, int get_context) | |
255 | { | |
256 | thread_info *th; | |
257 | ||
c5aa993b | 258 | for (th = &thread_head; (th = th->next) != NULL;) |
c906108c SS |
259 | if (th->id == id) |
260 | { | |
6537bb24 | 261 | if (!th->suspended && get_context) |
c906108c | 262 | { |
8a892701 | 263 | if (get_context > 0 && id != current_event.dwThreadId) |
6537bb24 PA |
264 | { |
265 | if (SuspendThread (th->h) == (DWORD) -1) | |
266 | { | |
267 | DWORD err = GetLastError (); | |
268 | warning (_("SuspendThread failed. (winerr %d)"), | |
269 | (int) err); | |
270 | return NULL; | |
271 | } | |
272 | th->suspended = 1; | |
273 | } | |
c906108c | 274 | else if (get_context < 0) |
6537bb24 | 275 | th->suspended = -1; |
3ade5333 | 276 | th->reload_context = 1; |
c906108c SS |
277 | } |
278 | return th; | |
279 | } | |
280 | ||
281 | return NULL; | |
282 | } | |
283 | ||
284 | /* Add a thread to the thread list */ | |
285 | static thread_info * | |
3ee6f623 | 286 | win32_add_thread (DWORD id, HANDLE h) |
c906108c SS |
287 | { |
288 | thread_info *th; | |
289 | ||
290 | if ((th = thread_rec (id, FALSE))) | |
291 | return th; | |
292 | ||
3929abe9 | 293 | th = XZALLOC (thread_info); |
c906108c SS |
294 | th->id = id; |
295 | th->h = h; | |
296 | th->next = thread_head.next; | |
297 | thread_head.next = th; | |
39f77062 | 298 | add_thread (pid_to_ptid (id)); |
dfe7f3ac | 299 | /* Set the debug registers for the new thread in they are used. */ |
fa4ba8da PM |
300 | if (debug_registers_used) |
301 | { | |
302 | /* Only change the value of the debug registers. */ | |
303 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
304 | CHECK (GetThreadContext (th->h, &th->context)); | |
305 | th->context.Dr0 = dr[0]; | |
306 | th->context.Dr1 = dr[1]; | |
307 | th->context.Dr2 = dr[2]; | |
308 | th->context.Dr3 = dr[3]; | |
6537bb24 | 309 | th->context.Dr6 = DR6_CLEAR_VALUE; |
fa4ba8da PM |
310 | th->context.Dr7 = dr[7]; |
311 | CHECK (SetThreadContext (th->h, &th->context)); | |
312 | th->context.ContextFlags = 0; | |
313 | } | |
c906108c SS |
314 | return th; |
315 | } | |
316 | ||
317 | /* Clear out any old thread list and reintialize it to a | |
318 | pristine state. */ | |
319 | static void | |
3ee6f623 | 320 | win32_init_thread_list (void) |
c906108c SS |
321 | { |
322 | thread_info *th = &thread_head; | |
323 | ||
3ee6f623 | 324 | DEBUG_EVENTS (("gdb: win32_init_thread_list\n")); |
c906108c SS |
325 | init_thread_list (); |
326 | while (th->next != NULL) | |
327 | { | |
328 | thread_info *here = th->next; | |
329 | th->next = here->next; | |
b8c9b27d | 330 | xfree (here); |
c906108c | 331 | } |
059198c1 | 332 | thread_head.next = NULL; |
c906108c SS |
333 | } |
334 | ||
335 | /* Delete a thread from the list of threads */ | |
336 | static void | |
3ee6f623 | 337 | win32_delete_thread (DWORD id) |
c906108c SS |
338 | { |
339 | thread_info *th; | |
340 | ||
341 | if (info_verbose) | |
39f77062 KB |
342 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
343 | delete_thread (pid_to_ptid (id)); | |
c906108c SS |
344 | |
345 | for (th = &thread_head; | |
346 | th->next != NULL && th->next->id != id; | |
347 | th = th->next) | |
348 | continue; | |
349 | ||
350 | if (th->next != NULL) | |
351 | { | |
352 | thread_info *here = th->next; | |
353 | th->next = here->next; | |
b8c9b27d | 354 | xfree (here); |
c906108c SS |
355 | } |
356 | } | |
357 | ||
c906108c | 358 | static void |
56be3814 | 359 | do_win32_fetch_inferior_registers (struct regcache *regcache, int r) |
c906108c | 360 | { |
c2d11a7d JM |
361 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
362 | long l; | |
6c7de422 | 363 | |
3ade5333 | 364 | if (!current_thread) |
d6dc8049 CF |
365 | return; /* Windows sometimes uses a non-existent thread id in its |
366 | events */ | |
3ade5333 CF |
367 | |
368 | if (current_thread->reload_context) | |
369 | { | |
cb832706 | 370 | #ifdef __COPY_CONTEXT_SIZE |
a244bdca CF |
371 | if (have_saved_context) |
372 | { | |
373 | /* Lie about where the program actually is stopped since cygwin has informed us that | |
374 | we should consider the signal to have occurred at another location which is stored | |
375 | in "saved_context. */ | |
376 | memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE); | |
377 | have_saved_context = 0; | |
378 | } | |
379 | else | |
cb832706 | 380 | #endif |
a244bdca CF |
381 | { |
382 | thread_info *th = current_thread; | |
383 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
384 | GetThreadContext (th->h, &th->context); | |
385 | /* Copy dr values from that thread. */ | |
386 | dr[0] = th->context.Dr0; | |
387 | dr[1] = th->context.Dr1; | |
388 | dr[2] = th->context.Dr2; | |
389 | dr[3] = th->context.Dr3; | |
390 | dr[6] = th->context.Dr6; | |
391 | dr[7] = th->context.Dr7; | |
392 | } | |
3ade5333 CF |
393 | current_thread->reload_context = 0; |
394 | } | |
395 | ||
6c7de422 MK |
396 | #define I387_ST0_REGNUM I386_ST0_REGNUM |
397 | ||
398 | if (r == I387_FISEG_REGNUM) | |
c2d11a7d | 399 | { |
8e860359 | 400 | l = *((long *) context_offset) & 0xffff; |
56be3814 | 401 | regcache_raw_supply (regcache, r, (char *) &l); |
c2d11a7d | 402 | } |
6c7de422 | 403 | else if (r == I387_FOP_REGNUM) |
c2d11a7d | 404 | { |
8e860359 | 405 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
56be3814 | 406 | regcache_raw_supply (regcache, r, (char *) &l); |
c2d11a7d JM |
407 | } |
408 | else if (r >= 0) | |
56be3814 | 409 | regcache_raw_supply (regcache, r, context_offset); |
c906108c SS |
410 | else |
411 | { | |
40a6adc1 | 412 | for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++) |
56be3814 | 413 | do_win32_fetch_inferior_registers (regcache, r); |
c906108c | 414 | } |
6c7de422 MK |
415 | |
416 | #undef I387_ST0_REGNUM | |
c906108c SS |
417 | } |
418 | ||
419 | static void | |
56be3814 | 420 | win32_fetch_inferior_registers (struct regcache *regcache, int r) |
c906108c | 421 | { |
39f77062 | 422 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
d6dc8049 CF |
423 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
424 | thread id in its events */ | |
3ade5333 | 425 | if (current_thread) |
56be3814 | 426 | do_win32_fetch_inferior_registers (regcache, r); |
c906108c SS |
427 | } |
428 | ||
429 | static void | |
56be3814 | 430 | do_win32_store_inferior_registers (const struct regcache *regcache, int r) |
c906108c | 431 | { |
3ade5333 | 432 | if (!current_thread) |
d6dc8049 | 433 | /* Windows sometimes uses a non-existent thread id in its events */; |
3ade5333 | 434 | else if (r >= 0) |
56be3814 | 435 | regcache_raw_collect (regcache, r, |
822c9732 | 436 | ((char *) ¤t_thread->context) + mappings[r]); |
c906108c SS |
437 | else |
438 | { | |
40a6adc1 | 439 | for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++) |
56be3814 | 440 | do_win32_store_inferior_registers (regcache, r); |
c906108c SS |
441 | } |
442 | } | |
443 | ||
444 | /* Store a new register value into the current thread context */ | |
445 | static void | |
56be3814 | 446 | win32_store_inferior_registers (struct regcache *regcache, int r) |
c906108c | 447 | { |
39f77062 | 448 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
d6dc8049 CF |
449 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
450 | thread id in its events */ | |
3ade5333 | 451 | if (current_thread) |
56be3814 | 452 | do_win32_store_inferior_registers (regcache, r); |
c906108c SS |
453 | } |
454 | ||
c2d11a7d JM |
455 | static int psapi_loaded = 0; |
456 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
457 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
458 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
459 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
c2d11a7d | 460 | |
3ee6f623 | 461 | static int |
8e860359 | 462 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
c2d11a7d JM |
463 | { |
464 | DWORD len; | |
465 | MODULEINFO mi; | |
466 | int i; | |
8e860359 CF |
467 | HMODULE dh_buf[1]; |
468 | HMODULE *DllHandle = dh_buf; | |
c2d11a7d JM |
469 | DWORD cbNeeded; |
470 | BOOL ok; | |
471 | ||
472 | if (!psapi_loaded || | |
8e860359 CF |
473 | psapi_EnumProcessModules == NULL || |
474 | psapi_GetModuleInformation == NULL || | |
475 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d | 476 | { |
8e860359 CF |
477 | if (psapi_loaded) |
478 | goto failed; | |
c2d11a7d JM |
479 | psapi_loaded = 1; |
480 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
481 | if (!psapi_module_handle) | |
8e860359 CF |
482 | { |
483 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
484 | goto failed; | |
485 | } | |
486 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
c2d11a7d JM |
487 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
488 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
489 | "GetModuleFileNameExA"); |
490 | if (psapi_EnumProcessModules == NULL || | |
491 | psapi_GetModuleInformation == NULL || | |
492 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d JM |
493 | goto failed; |
494 | } | |
495 | ||
496 | cbNeeded = 0; | |
497 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
498 | DllHandle, |
499 | sizeof (HMODULE), | |
500 | &cbNeeded); | |
c2d11a7d JM |
501 | |
502 | if (!ok || !cbNeeded) | |
503 | goto failed; | |
504 | ||
8e860359 | 505 | DllHandle = (HMODULE *) alloca (cbNeeded); |
c2d11a7d JM |
506 | if (!DllHandle) |
507 | goto failed; | |
508 | ||
509 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
510 | DllHandle, |
511 | cbNeeded, | |
512 | &cbNeeded); | |
c2d11a7d JM |
513 | if (!ok) |
514 | goto failed; | |
515 | ||
29fe111d | 516 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
c2d11a7d JM |
517 | { |
518 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
519 | DllHandle[i], |
520 | &mi, | |
521 | sizeof (mi))) | |
8a3fe4f8 | 522 | error (_("Can't get module info")); |
c2d11a7d JM |
523 | |
524 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
525 | DllHandle[i], |
526 | dll_name_ret, | |
527 | MAX_PATH); | |
c2d11a7d | 528 | if (len == 0) |
8a3fe4f8 | 529 | error (_("Error getting dll name: %u."), (unsigned) GetLastError ()); |
c2d11a7d JM |
530 | |
531 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
532 | return 1; | |
533 | } | |
534 | ||
535 | failed: | |
536 | dll_name_ret[0] = '\0'; | |
537 | return 0; | |
538 | } | |
539 | ||
450005e7 CF |
540 | /* Encapsulate the information required in a call to |
541 | symbol_file_add_args */ | |
8a892701 CF |
542 | struct safe_symbol_file_add_args |
543 | { | |
544 | char *name; | |
545 | int from_tty; | |
546 | struct section_addr_info *addrs; | |
547 | int mainline; | |
548 | int flags; | |
7c5c87c0 | 549 | struct ui_file *err, *out; |
8a892701 CF |
550 | struct objfile *ret; |
551 | }; | |
552 | ||
02e423b9 | 553 | /* Maintain a linked list of "so" information. */ |
3ee6f623 | 554 | struct lm_info |
02e423b9 | 555 | { |
02e423b9 | 556 | DWORD load_addr; |
3ee6f623 CF |
557 | }; |
558 | ||
559 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 560 | |
450005e7 CF |
561 | /* Call symbol_file_add with stderr redirected. We don't care if there |
562 | are errors. */ | |
8a892701 CF |
563 | static int |
564 | safe_symbol_file_add_stub (void *argv) | |
565 | { | |
3ee6f623 CF |
566 | #define p ((struct safe_symbol_file_add_args *) argv) |
567 | struct so_list *so = &solib_start; | |
02e423b9 | 568 | |
8a892701 CF |
569 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
570 | return !!p->ret; | |
571 | #undef p | |
572 | } | |
573 | ||
450005e7 | 574 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 575 | static void |
7c5c87c0 | 576 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 577 | { |
8e860359 | 578 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 579 | gdb_flush (gdb_stderr); |
7c5c87c0 | 580 | gdb_flush (gdb_stdout); |
d3ff4a77 | 581 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 582 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 583 | gdb_stderr = sp->err; |
9d3789f7 | 584 | gdb_stdout = sp->out; |
8e860359 | 585 | #undef sp |
8a892701 CF |
586 | } |
587 | ||
450005e7 | 588 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
589 | static struct objfile * |
590 | safe_symbol_file_add (char *name, int from_tty, | |
591 | struct section_addr_info *addrs, | |
592 | int mainline, int flags) | |
8a892701 CF |
593 | { |
594 | struct safe_symbol_file_add_args p; | |
595 | struct cleanup *cleanup; | |
596 | ||
7c5c87c0 | 597 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 598 | |
7c5c87c0 CF |
599 | p.err = gdb_stderr; |
600 | p.out = gdb_stdout; | |
450005e7 | 601 | gdb_flush (gdb_stderr); |
7c5c87c0 | 602 | gdb_flush (gdb_stdout); |
d3ff4a77 | 603 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 604 | gdb_stdout = ui_file_new (); |
8a892701 CF |
605 | p.name = name; |
606 | p.from_tty = from_tty; | |
607 | p.addrs = addrs; | |
608 | p.mainline = mainline; | |
609 | p.flags = flags; | |
610 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
611 | ||
612 | do_cleanups (cleanup); | |
613 | return p.ret; | |
614 | } | |
615 | ||
de1b3c3d PA |
616 | static struct so_list * |
617 | win32_make_so (const char *name, DWORD load_addr) | |
8e860359 | 618 | { |
3ee6f623 | 619 | struct so_list *so; |
3f8ad85b CF |
620 | char buf[MAX_PATH + 1]; |
621 | char cwd[MAX_PATH + 1]; | |
622 | char *p; | |
623 | WIN32_FIND_DATA w32_fd; | |
624 | HANDLE h = FindFirstFile(name, &w32_fd); | |
5633f842 | 625 | MEMORY_BASIC_INFORMATION m; |
3f8ad85b | 626 | |
6badb179 CF |
627 | if (h == INVALID_HANDLE_VALUE) |
628 | strcpy (buf, name); | |
629 | else | |
3f8ad85b | 630 | { |
c914e0cc CF |
631 | FindClose (h); |
632 | strcpy (buf, name); | |
633 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
634 | { | |
635 | p = strrchr (buf, '\\'); | |
636 | if (p) | |
637 | p[1] = '\0'; | |
638 | SetCurrentDirectory (buf); | |
639 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
640 | SetCurrentDirectory (cwd); | |
641 | } | |
3f8ad85b CF |
642 | } |
643 | ||
3ee6f623 CF |
644 | if (strcasecmp (buf, "ntdll.dll") == 0) |
645 | { | |
646 | GetSystemDirectory (buf, sizeof (buf)); | |
647 | strcat (buf, "\\ntdll.dll"); | |
648 | } | |
3929abe9 | 649 | so = XZALLOC (struct so_list); |
3ee6f623 CF |
650 | so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info)); |
651 | so->lm_info->load_addr = load_addr; | |
de1b3c3d | 652 | strcpy (so->so_original_name, name); |
10325bc5 PA |
653 | #ifndef __CYGWIN__ |
654 | strcpy (so->so_name, buf); | |
655 | #else | |
656 | cygwin_conv_to_posix_path (buf, so->so_name); | |
de1b3c3d PA |
657 | /* Record cygwin1.dll .text start/end. */ |
658 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
659 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
660 | { | |
661 | bfd *abfd; | |
662 | asection *text = NULL; | |
663 | CORE_ADDR text_vma; | |
8e860359 | 664 | |
de1b3c3d | 665 | abfd = bfd_openr (name, "pei-i386"); |
a244bdca | 666 | |
de1b3c3d PA |
667 | if (!abfd) |
668 | return so; | |
669 | ||
670 | if (bfd_check_format (abfd, bfd_object)) | |
671 | text = bfd_get_section_by_name (abfd, ".text"); | |
672 | ||
673 | if (!text) | |
674 | { | |
675 | bfd_close (abfd); | |
676 | return so; | |
677 | } | |
678 | ||
679 | /* The symbols in a dll are offset by 0x1000, which is the the | |
680 | offset from 0 of the first byte in an image - because of the | |
681 | file header and the section alignment. */ | |
682 | cygwin_load_start = load_addr + 0x1000; | |
683 | cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text); | |
684 | ||
685 | bfd_close (abfd); | |
686 | } | |
10325bc5 | 687 | #endif |
de1b3c3d PA |
688 | |
689 | return so; | |
8e860359 CF |
690 | } |
691 | ||
3ee6f623 | 692 | static char * |
dfe7f3ac CF |
693 | get_image_name (HANDLE h, void *address, int unicode) |
694 | { | |
695 | static char buf[(2 * MAX_PATH) + 1]; | |
696 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
697 | char *address_ptr; | |
698 | int len = 0; | |
699 | char b[2]; | |
700 | DWORD done; | |
701 | ||
702 | /* Attempt to read the name of the dll that was detected. | |
703 | This is documented to work only when actively debugging | |
704 | a program. It will not work for attached processes. */ | |
705 | if (address == NULL) | |
706 | return NULL; | |
707 | ||
dfe7f3ac CF |
708 | /* See if we could read the address of a string, and that the |
709 | address isn't null. */ | |
9f476a01 | 710 | if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) |
6f17862b | 711 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
712 | return NULL; |
713 | ||
714 | /* Find the length of the string */ | |
6f17862b CF |
715 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
716 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
717 | continue; | |
dfe7f3ac CF |
718 | |
719 | if (!unicode) | |
720 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
721 | else | |
722 | { | |
723 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
724 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
725 | &done); | |
726 | ||
727 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
728 | } | |
729 | ||
730 | return buf; | |
731 | } | |
732 | ||
c906108c SS |
733 | /* Wait for child to do something. Return pid of child, or -1 in case |
734 | of error; store status through argument pointer OURSTATUS. */ | |
c906108c | 735 | static int |
0a65a603 | 736 | handle_load_dll (void *dummy) |
c906108c | 737 | { |
c5aa993b | 738 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
c906108c | 739 | char dll_buf[MAX_PATH + 1]; |
450005e7 | 740 | char *dll_name = NULL; |
c906108c | 741 | |
c5aa993b | 742 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 743 | |
c2d11a7d | 744 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 745 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 746 | |
c2d11a7d | 747 | dll_name = dll_buf; |
c906108c | 748 | |
dfe7f3ac | 749 | if (*dll_name == '\0') |
de1b3c3d PA |
750 | dll_name = get_image_name (current_process_handle, |
751 | event->lpImageName, event->fUnicode); | |
c906108c SS |
752 | if (!dll_name) |
753 | return 1; | |
754 | ||
de1b3c3d PA |
755 | solib_end->next = win32_make_so (dll_name, (DWORD) event->lpBaseOfDll); |
756 | solib_end = solib_end->next; | |
450005e7 CF |
757 | |
758 | return 1; | |
759 | } | |
760 | ||
3ee6f623 CF |
761 | static void |
762 | win32_free_so (struct so_list *so) | |
763 | { | |
3ee6f623 CF |
764 | if (so->lm_info) |
765 | xfree (so->lm_info); | |
de1b3c3d | 766 | xfree (so); |
3cb8e7f6 CF |
767 | } |
768 | ||
d3ff4a77 | 769 | static int |
0a65a603 | 770 | handle_unload_dll (void *dummy) |
d3ff4a77 | 771 | { |
de1b3c3d | 772 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 773 | struct so_list *so; |
d3ff4a77 CF |
774 | |
775 | for (so = &solib_start; so->next != NULL; so = so->next) | |
3ee6f623 | 776 | if (so->next->lm_info->load_addr == lpBaseOfDll) |
d3ff4a77 | 777 | { |
3ee6f623 | 778 | struct so_list *sodel = so->next; |
d3ff4a77 CF |
779 | so->next = sodel->next; |
780 | if (!so->next) | |
781 | solib_end = so; | |
de1b3c3d | 782 | win32_free_so (sodel); |
3929abe9 | 783 | solib_add (NULL, 0, NULL, auto_solib_add); |
d3ff4a77 CF |
784 | return 1; |
785 | } | |
3929abe9 | 786 | |
8a3fe4f8 | 787 | error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll); |
d3ff4a77 CF |
788 | |
789 | return 0; | |
790 | } | |
791 | ||
450005e7 | 792 | /* Clear list of loaded DLLs. */ |
3ee6f623 CF |
793 | static void |
794 | win32_clear_solib (void) | |
450005e7 | 795 | { |
450005e7 CF |
796 | solib_start.next = NULL; |
797 | solib_end = &solib_start; | |
450005e7 | 798 | } |
295732ea | 799 | |
450005e7 CF |
800 | /* Load DLL symbol info. */ |
801 | void | |
7470a420 | 802 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 803 | { |
8e860359 | 804 | int n; |
450005e7 | 805 | dont_repeat (); |
8e860359 | 806 | |
450005e7 | 807 | if (args == NULL) |
8a3fe4f8 | 808 | error (_("dll-symbols requires a file name")); |
450005e7 | 809 | |
8e860359 CF |
810 | n = strlen (args); |
811 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
812 | { | |
813 | char *newargs = (char *) alloca (n + 4 + 1); | |
814 | strcpy (newargs, args); | |
815 | strcat (newargs, ".dll"); | |
816 | args = newargs; | |
817 | } | |
818 | ||
7470a420 | 819 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 820 | } |
450005e7 | 821 | |
c906108c SS |
822 | /* Handle DEBUG_STRING output from child process. |
823 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
824 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
825 | static int | |
826 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
827 | { | |
a244bdca CF |
828 | char *s = NULL; |
829 | int retval = 0; | |
c906108c SS |
830 | |
831 | if (!target_read_string | |
2c647436 PM |
832 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, |
833 | &s, 1024, 0) | |
c906108c | 834 | || !s || !*s) |
a244bdca CF |
835 | /* nothing to do */; |
836 | else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0) | |
c906108c | 837 | { |
10325bc5 | 838 | #ifdef __CYGWIN__ |
ed9a39eb | 839 | if (strncmp (s, "cYg", 3) != 0) |
10325bc5 | 840 | #endif |
8a3fe4f8 | 841 | warning (("%s"), s); |
c906108c | 842 | } |
cb832706 | 843 | #ifdef __COPY_CONTEXT_SIZE |
ed9a39eb | 844 | else |
c906108c | 845 | { |
a244bdca CF |
846 | /* Got a cygwin signal marker. A cygwin signal is followed by the signal number |
847 | itself and then optionally followed by the thread id and address to saved context | |
848 | within the DLL. If these are supplied, then the given thread is assumed to have | |
849 | issued the signal and the context from the thread is assumed to be stored at the | |
850 | given address in the inferior. Tell gdb to treat this like a real signal. */ | |
c906108c | 851 | char *p; |
3929abe9 | 852 | int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
a244bdca | 853 | int gotasig = target_signal_from_host (sig); |
7a292a7a SS |
854 | ourstatus->value.sig = gotasig; |
855 | if (gotasig) | |
a244bdca CF |
856 | { |
857 | LPCVOID x; | |
858 | DWORD n; | |
859 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
860 | retval = strtoul (p, &p, 0); | |
861 | if (!retval) | |
862 | retval = main_thread_id; | |
863 | else if ((x = (LPCVOID) strtoul (p, &p, 0)) | |
864 | && ReadProcessMemory (current_process_handle, x, | |
865 | &saved_context, __COPY_CONTEXT_SIZE, &n) | |
866 | && n == __COPY_CONTEXT_SIZE) | |
867 | have_saved_context = 1; | |
868 | current_event.dwThreadId = retval; | |
869 | } | |
c906108c | 870 | } |
cb832706 | 871 | #endif |
c906108c | 872 | |
a244bdca CF |
873 | if (s) |
874 | xfree (s); | |
875 | return retval; | |
c906108c SS |
876 | } |
877 | ||
c1748f97 PM |
878 | static int |
879 | display_selector (HANDLE thread, DWORD sel) | |
880 | { | |
881 | LDT_ENTRY info; | |
882 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
883 | { | |
884 | int base, limit; | |
885 | printf_filtered ("0x%03lx: ", sel); | |
886 | if (!info.HighWord.Bits.Pres) | |
baa93fa6 CF |
887 | { |
888 | puts_filtered ("Segment not present\n"); | |
889 | return 0; | |
890 | } | |
c1748f97 PM |
891 | base = (info.HighWord.Bits.BaseHi << 24) + |
892 | (info.HighWord.Bits.BaseMid << 16) | |
893 | + info.BaseLow; | |
894 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
895 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 896 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
897 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
898 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 899 | puts_filtered(" 32-bit "); |
c1748f97 | 900 | else |
baa93fa6 | 901 | puts_filtered(" 16-bit "); |
c1748f97 PM |
902 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
903 | { | |
904 | case 0: | |
baa93fa6 CF |
905 | puts_filtered ("Data (Read-Only, Exp-up"); |
906 | break; | |
c1748f97 | 907 | case 1: |
baa93fa6 CF |
908 | puts_filtered ("Data (Read/Write, Exp-up"); |
909 | break; | |
c1748f97 | 910 | case 2: |
baa93fa6 CF |
911 | puts_filtered ("Unused segment ("); |
912 | break; | |
c1748f97 | 913 | case 3: |
baa93fa6 CF |
914 | puts_filtered ("Data (Read/Write, Exp-down"); |
915 | break; | |
c1748f97 | 916 | case 4: |
baa93fa6 CF |
917 | puts_filtered ("Code (Exec-Only, N.Conf"); |
918 | break; | |
c1748f97 | 919 | case 5: |
baa93fa6 | 920 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
921 | break; |
922 | case 6: | |
baa93fa6 | 923 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
924 | break; |
925 | case 7: | |
baa93fa6 | 926 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
927 | break; |
928 | default: | |
929 | printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); | |
930 | } | |
931 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 932 | puts_filtered(", N.Acc"); |
c1748f97 PM |
933 | puts_filtered (")\n"); |
934 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
935 | puts_filtered("System selector "); | |
936 | printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); | |
937 | if (info.HighWord.Bits.Granularity) | |
baa93fa6 | 938 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
939 | else |
940 | puts_filtered ("Byte granular.\n"); | |
941 | return 1; | |
942 | } | |
943 | else | |
944 | { | |
945 | printf_filtered ("Invalid selector 0x%lx.\n",sel); | |
946 | return 0; | |
947 | } | |
948 | } | |
949 | ||
950 | static void | |
951 | display_selectors (char * args, int from_tty) | |
952 | { | |
953 | if (!current_thread) | |
954 | { | |
955 | puts_filtered ("Impossible to display selectors now.\n"); | |
956 | return; | |
957 | } | |
958 | if (!args) | |
959 | { | |
960 | ||
961 | puts_filtered ("Selector $cs\n"); | |
962 | display_selector (current_thread->h, | |
baa93fa6 | 963 | current_thread->context.SegCs); |
c1748f97 PM |
964 | puts_filtered ("Selector $ds\n"); |
965 | display_selector (current_thread->h, | |
baa93fa6 | 966 | current_thread->context.SegDs); |
c1748f97 PM |
967 | puts_filtered ("Selector $es\n"); |
968 | display_selector (current_thread->h, | |
baa93fa6 | 969 | current_thread->context.SegEs); |
c1748f97 PM |
970 | puts_filtered ("Selector $ss\n"); |
971 | display_selector (current_thread->h, | |
baa93fa6 | 972 | current_thread->context.SegSs); |
c1748f97 PM |
973 | puts_filtered ("Selector $fs\n"); |
974 | display_selector (current_thread->h, | |
975 | current_thread->context.SegFs); | |
976 | puts_filtered ("Selector $gs\n"); | |
977 | display_selector (current_thread->h, | |
baa93fa6 | 978 | current_thread->context.SegGs); |
c1748f97 PM |
979 | } |
980 | else | |
981 | { | |
982 | int sel; | |
983 | sel = parse_and_eval_long (args); | |
984 | printf_filtered ("Selector \"%s\"\n",args); | |
985 | display_selector (current_thread->h, sel); | |
986 | } | |
987 | } | |
988 | ||
989 | static struct cmd_list_element *info_w32_cmdlist = NULL; | |
990 | ||
991 | static void | |
992 | info_w32_command (char *args, int from_tty) | |
993 | { | |
994 | help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); | |
995 | } | |
996 | ||
997 | ||
7393af7c | 998 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
4e52d31c | 999 | printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \ |
7393af7c PM |
1000 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress) |
1001 | ||
c906108c | 1002 | static int |
450005e7 | 1003 | handle_exception (struct target_waitstatus *ourstatus) |
c906108c | 1004 | { |
c906108c | 1005 | thread_info *th; |
29fe111d | 1006 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
c906108c | 1007 | |
29fe111d | 1008 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1009 | |
c906108c SS |
1010 | /* Record the context of the current thread */ |
1011 | th = thread_rec (current_event.dwThreadId, -1); | |
1012 | ||
29fe111d | 1013 | switch (code) |
c906108c SS |
1014 | { |
1015 | case EXCEPTION_ACCESS_VIOLATION: | |
7393af7c PM |
1016 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
1017 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
10325bc5 | 1018 | #ifdef __CYGWIN__ |
8da8e0b3 | 1019 | { |
a244bdca CF |
1020 | /* See if the access violation happened within the cygwin DLL itself. Cygwin uses |
1021 | a kind of exception handling to deal with passed-in invalid addresses. gdb | |
1022 | should not treat these as real SEGVs since they will be silently handled by | |
1023 | cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process | |
1024 | and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up | |
1025 | within the text segment of the DLL itself. */ | |
8da8e0b3 | 1026 | char *fn; |
2c647436 PM |
1027 | bfd_vma addr = (bfd_vma) (uintptr_t) current_event.u.Exception. |
1028 | ExceptionRecord.ExceptionAddress; | |
09280ddf | 1029 | if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end)) |
a244bdca CF |
1030 | || (find_pc_partial_function (addr, &fn, NULL, NULL) |
1031 | && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)) | |
8da8e0b3 CF |
1032 | return 0; |
1033 | } | |
10325bc5 | 1034 | #endif |
7393af7c PM |
1035 | break; |
1036 | case STATUS_STACK_OVERFLOW: | |
1037 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
c906108c | 1038 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
7393af7c PM |
1039 | break; |
1040 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1041 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
1042 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1043 | break; | |
1044 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1045 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
1046 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1047 | break; | |
1048 | case STATUS_FLOAT_INEXACT_RESULT: | |
1049 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
1050 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1051 | break; | |
1052 | case STATUS_FLOAT_INVALID_OPERATION: | |
1053 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
1054 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1055 | break; | |
1056 | case STATUS_FLOAT_OVERFLOW: | |
1057 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
1058 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1059 | break; | |
1060 | case STATUS_FLOAT_STACK_CHECK: | |
1061 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
1062 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
c906108c | 1063 | break; |
0d06e24b | 1064 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c PM |
1065 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
1066 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1067 | break; | |
0d06e24b | 1068 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c PM |
1069 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
1070 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1071 | break; | |
0d06e24b | 1072 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1073 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
0d06e24b | 1074 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
0d06e24b | 1075 | break; |
7393af7c PM |
1076 | case STATUS_INTEGER_OVERFLOW: |
1077 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
1078 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
c906108c SS |
1079 | break; |
1080 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1081 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
c906108c SS |
1082 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1083 | break; | |
1084 | case DBG_CONTROL_C: | |
7393af7c | 1085 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
c906108c | 1086 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
1087 | break; |
1088 | case DBG_CONTROL_BREAK: | |
7393af7c | 1089 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
5b421780 | 1090 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
c906108c SS |
1091 | break; |
1092 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1093 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
c906108c SS |
1094 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1095 | break; | |
8227c82d | 1096 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c PM |
1097 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
1098 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1099 | break; | |
1100 | case EXCEPTION_PRIV_INSTRUCTION: | |
1101 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
1102 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1103 | break; | |
1104 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1105 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
8227c82d CF |
1106 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
1107 | break; | |
c906108c | 1108 | default: |
a244bdca | 1109 | /* Treat unhandled first chance exceptions specially. */ |
02e423b9 | 1110 | if (current_event.u.Exception.dwFirstChance) |
a244bdca | 1111 | return -1; |
29fe111d | 1112 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
c5aa993b | 1113 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 1114 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
c906108c SS |
1115 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1116 | break; | |
1117 | } | |
1118 | exception_count++; | |
7393af7c | 1119 | last_sig = ourstatus->value.sig; |
c906108c SS |
1120 | return 1; |
1121 | } | |
1122 | ||
1123 | /* Resume all artificially suspended threads if we are continuing | |
1124 | execution */ | |
1125 | static BOOL | |
3ee6f623 | 1126 | win32_continue (DWORD continue_status, int id) |
c906108c SS |
1127 | { |
1128 | int i; | |
1129 | thread_info *th; | |
1130 | BOOL res; | |
1131 | ||
7393af7c PM |
1132 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n", |
1133 | current_event.dwProcessId, current_event.dwThreadId, | |
dfe7f3ac | 1134 | continue_status == DBG_CONTINUE ? |
7393af7c | 1135 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
6537bb24 PA |
1136 | |
1137 | for (th = &thread_head; (th = th->next) != NULL;) | |
1138 | if ((id == -1 || id == (int) th->id) | |
1139 | && th->suspended) | |
1140 | { | |
1141 | if (debug_registers_changed) | |
1142 | { | |
1143 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1144 | th->context.Dr0 = dr[0]; | |
1145 | th->context.Dr1 = dr[1]; | |
1146 | th->context.Dr2 = dr[2]; | |
1147 | th->context.Dr3 = dr[3]; | |
1148 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1149 | th->context.Dr7 = dr[7]; | |
1150 | } | |
1151 | if (th->context.ContextFlags) | |
1152 | { | |
1153 | CHECK (SetThreadContext (th->h, &th->context)); | |
1154 | th->context.ContextFlags = 0; | |
1155 | } | |
1156 | if (th->suspended > 0) | |
1157 | (void) ResumeThread (th->h); | |
1158 | th->suspended = 0; | |
1159 | } | |
1160 | ||
7a292a7a SS |
1161 | res = ContinueDebugEvent (current_event.dwProcessId, |
1162 | current_event.dwThreadId, | |
1163 | continue_status); | |
c906108c | 1164 | |
fa4ba8da | 1165 | debug_registers_changed = 0; |
c906108c SS |
1166 | return res; |
1167 | } | |
1168 | ||
d6dc8049 CF |
1169 | /* Called in pathological case where Windows fails to send a |
1170 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1171 | static DWORD |
5439edaa | 1172 | fake_create_process (void) |
3ade5333 CF |
1173 | { |
1174 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1175 | current_event.dwProcessId); | |
bf25528d CF |
1176 | if (current_process_handle != NULL) |
1177 | open_process_used = 1; | |
1178 | else | |
1179 | { | |
1180 | error (_("OpenProcess call failed, GetLastError = %lud\n"), | |
1181 | GetLastError ()); | |
1182 | /* We can not debug anything in that case. */ | |
1183 | } | |
3ade5333 | 1184 | main_thread_id = current_event.dwThreadId; |
3ee6f623 | 1185 | current_thread = win32_add_thread (main_thread_id, |
3ade5333 CF |
1186 | current_event.u.CreateThread.hThread); |
1187 | return main_thread_id; | |
1188 | } | |
1189 | ||
a244bdca CF |
1190 | static void |
1191 | win32_resume (ptid_t ptid, int step, enum target_signal sig) | |
1192 | { | |
1193 | thread_info *th; | |
1194 | DWORD continue_status = DBG_CONTINUE; | |
1195 | ||
1196 | int pid = PIDGET (ptid); | |
1197 | ||
1198 | if (sig != TARGET_SIGNAL_0) | |
1199 | { | |
1200 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1201 | { | |
1202 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1203 | } | |
1204 | else if (sig == last_sig) | |
1205 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1206 | else | |
1207 | #if 0 | |
1208 | /* This code does not seem to work, because | |
1209 | the kernel does probably not consider changes in the ExceptionRecord | |
1210 | structure when passing the exception to the inferior. | |
1211 | Note that this seems possible in the exception handler itself. */ | |
1212 | { | |
1213 | int i; | |
1214 | for (i = 0; xlate[i].them != -1; i++) | |
1215 | if (xlate[i].us == sig) | |
1216 | { | |
1217 | current_event.u.Exception.ExceptionRecord.ExceptionCode = | |
1218 | xlate[i].them; | |
1219 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1220 | break; | |
1221 | } | |
1222 | if (continue_status == DBG_CONTINUE) | |
1223 | { | |
1224 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1225 | } | |
1226 | } | |
1227 | #endif | |
1228 | DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n", | |
1229 | last_sig)); | |
1230 | } | |
1231 | ||
1232 | last_sig = TARGET_SIGNAL_0; | |
1233 | ||
1234 | DEBUG_EXEC (("gdb: win32_resume (pid=%d, step=%d, sig=%d);\n", | |
1235 | pid, step, sig)); | |
1236 | ||
1237 | /* Get context for currently selected thread */ | |
677d7bec | 1238 | th = thread_rec (PIDGET (inferior_ptid), FALSE); |
a244bdca CF |
1239 | if (th) |
1240 | { | |
1241 | if (step) | |
1242 | { | |
1243 | /* Single step by setting t bit */ | |
3e8c568d UW |
1244 | win32_fetch_inferior_registers (get_current_regcache (), |
1245 | gdbarch_ps_regnum (current_gdbarch)); | |
a244bdca CF |
1246 | th->context.EFlags |= FLAG_TRACE_BIT; |
1247 | } | |
1248 | ||
1249 | if (th->context.ContextFlags) | |
1250 | { | |
1251 | if (debug_registers_changed) | |
1252 | { | |
1253 | th->context.Dr0 = dr[0]; | |
1254 | th->context.Dr1 = dr[1]; | |
1255 | th->context.Dr2 = dr[2]; | |
1256 | th->context.Dr3 = dr[3]; | |
6537bb24 | 1257 | th->context.Dr6 = DR6_CLEAR_VALUE; |
a244bdca CF |
1258 | th->context.Dr7 = dr[7]; |
1259 | } | |
1260 | CHECK (SetThreadContext (th->h, &th->context)); | |
1261 | th->context.ContextFlags = 0; | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | /* Allow continuing with the same signal that interrupted us. | |
1266 | Otherwise complain. */ | |
1267 | ||
1268 | win32_continue (continue_status, pid); | |
1269 | } | |
1270 | ||
8a892701 CF |
1271 | /* Get the next event from the child. Return 1 if the event requires |
1272 | handling by WFI (or whatever). | |
1273 | */ | |
c2d11a7d | 1274 | static int |
3ee6f623 | 1275 | get_win32_debug_event (int pid, struct target_waitstatus *ourstatus) |
c2d11a7d JM |
1276 | { |
1277 | BOOL debug_event; | |
8a892701 | 1278 | DWORD continue_status, event_code; |
87a45c96 | 1279 | thread_info *th; |
8a892701 | 1280 | static thread_info dummy_thread_info; |
450005e7 | 1281 | int retval = 0; |
a244bdca | 1282 | ptid_t ptid = {-1}; |
c2d11a7d | 1283 | |
7393af7c | 1284 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 | 1285 | |
8a892701 | 1286 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1287 | goto out; |
c2d11a7d JM |
1288 | |
1289 | event_count++; | |
1290 | continue_status = DBG_CONTINUE; | |
c2d11a7d | 1291 | |
8a892701 | 1292 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1293 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
87a45c96 | 1294 | th = NULL; |
a244bdca | 1295 | have_saved_context = 0; |
8a892701 CF |
1296 | |
1297 | switch (event_code) | |
c2d11a7d JM |
1298 | { |
1299 | case CREATE_THREAD_DEBUG_EVENT: | |
1300 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
1301 | (unsigned) current_event.dwProcessId, |
1302 | (unsigned) current_event.dwThreadId, | |
1303 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac | 1304 | if (saw_create != 1) |
3ade5333 CF |
1305 | { |
1306 | if (!saw_create && attach_flag) | |
1307 | { | |
d6dc8049 CF |
1308 | /* Kludge around a Windows bug where first event is a create |
1309 | thread event. Caused when attached process does not have | |
1310 | a main thread. */ | |
3ade5333 | 1311 | retval = ourstatus->value.related_pid = fake_create_process (); |
bf25528d CF |
1312 | if (retval) |
1313 | saw_create++; | |
3ade5333 CF |
1314 | } |
1315 | break; | |
1316 | } | |
c2d11a7d | 1317 | /* Record the existence of this thread */ |
3ee6f623 | 1318 | th = win32_add_thread (current_event.dwThreadId, |
8a892701 | 1319 | current_event.u.CreateThread.hThread); |
c2d11a7d JM |
1320 | if (info_verbose) |
1321 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
1322 | target_pid_to_str ( |
1323 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 1324 | retval = current_event.dwThreadId; |
c2d11a7d JM |
1325 | break; |
1326 | ||
1327 | case EXIT_THREAD_DEBUG_EVENT: | |
1328 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1329 | (unsigned) current_event.dwProcessId, |
1330 | (unsigned) current_event.dwThreadId, | |
1331 | "EXIT_THREAD_DEBUG_EVENT")); | |
87a45c96 CF |
1332 | if (current_event.dwThreadId != main_thread_id) |
1333 | { | |
3ee6f623 | 1334 | win32_delete_thread (current_event.dwThreadId); |
87a45c96 CF |
1335 | th = &dummy_thread_info; |
1336 | } | |
c2d11a7d JM |
1337 | break; |
1338 | ||
1339 | case CREATE_PROCESS_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 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1344 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1345 | if (++saw_create != 1) |
bf25528d | 1346 | break; |
c2d11a7d | 1347 | |
dfe7f3ac | 1348 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
87a45c96 | 1349 | if (main_thread_id) |
3ee6f623 | 1350 | win32_delete_thread (main_thread_id); |
9d3789f7 | 1351 | main_thread_id = current_event.dwThreadId; |
c2d11a7d | 1352 | /* Add the main thread */ |
3ee6f623 | 1353 | th = win32_add_thread (main_thread_id, |
8a892701 | 1354 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 1355 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
c2d11a7d JM |
1356 | break; |
1357 | ||
1358 | case EXIT_PROCESS_DEBUG_EVENT: | |
1359 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1360 | (unsigned) current_event.dwProcessId, |
1361 | (unsigned) current_event.dwThreadId, | |
1362 | "EXIT_PROCESS_DEBUG_EVENT")); | |
dfe7f3ac CF |
1363 | if (saw_create != 1) |
1364 | break; | |
c2d11a7d JM |
1365 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
1366 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
9d3789f7 | 1367 | retval = main_thread_id; |
8a892701 | 1368 | break; |
c2d11a7d JM |
1369 | |
1370 | case LOAD_DLL_DEBUG_EVENT: | |
1371 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1372 | (unsigned) current_event.dwProcessId, |
1373 | (unsigned) current_event.dwThreadId, | |
1374 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1375 | CloseHandle (current_event.u.LoadDll.hFile); |
dfe7f3ac CF |
1376 | if (saw_create != 1) |
1377 | break; | |
8a892701 | 1378 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
450005e7 CF |
1379 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1380 | ourstatus->value.integer = 0; | |
9d3789f7 | 1381 | retval = main_thread_id; |
c2d11a7d JM |
1382 | break; |
1383 | ||
1384 | case UNLOAD_DLL_DEBUG_EVENT: | |
1385 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1386 | (unsigned) current_event.dwProcessId, |
1387 | (unsigned) current_event.dwThreadId, | |
1388 | "UNLOAD_DLL_DEBUG_EVENT")); | |
dfe7f3ac CF |
1389 | if (saw_create != 1) |
1390 | break; | |
d3ff4a77 | 1391 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
de1b3c3d PA |
1392 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1393 | ourstatus->value.integer = 0; | |
1394 | retval = main_thread_id; | |
d3ff4a77 | 1395 | break; |
c2d11a7d JM |
1396 | |
1397 | case EXCEPTION_DEBUG_EVENT: | |
1398 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1399 | (unsigned) current_event.dwProcessId, |
1400 | (unsigned) current_event.dwThreadId, | |
1401 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1402 | if (saw_create != 1) |
1403 | break; | |
a244bdca CF |
1404 | switch (handle_exception (ourstatus)) |
1405 | { | |
1406 | case 0: | |
1407 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1408 | break; | |
1409 | case 1: | |
1410 | retval = current_event.dwThreadId; | |
1411 | break; | |
1412 | case -1: | |
1413 | last_sig = 1; | |
1414 | continue_status = -1; | |
1415 | break; | |
1416 | } | |
c2d11a7d JM |
1417 | break; |
1418 | ||
8a892701 | 1419 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
c2d11a7d | 1420 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1421 | (unsigned) current_event.dwProcessId, |
1422 | (unsigned) current_event.dwThreadId, | |
1423 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1424 | if (saw_create != 1) |
1425 | break; | |
a244bdca | 1426 | retval = handle_output_debug_string (ourstatus); |
c2d11a7d | 1427 | break; |
9d3789f7 | 1428 | |
c2d11a7d | 1429 | default: |
dfe7f3ac CF |
1430 | if (saw_create != 1) |
1431 | break; | |
29fe111d CF |
1432 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1433 | (DWORD) current_event.dwProcessId, | |
1434 | (DWORD) current_event.dwThreadId); | |
1435 | printf_unfiltered (" unknown event code %ld\n", | |
c2d11a7d JM |
1436 | current_event.dwDebugEventCode); |
1437 | break; | |
1438 | } | |
1439 | ||
dfe7f3ac | 1440 | if (!retval || saw_create != 1) |
a244bdca CF |
1441 | { |
1442 | if (continue_status == -1) | |
1443 | win32_resume (ptid, 0, 1); | |
1444 | else | |
1445 | CHECK (win32_continue (continue_status, -1)); | |
1446 | } | |
450005e7 | 1447 | else |
9d3789f7 | 1448 | { |
39f77062 | 1449 | inferior_ptid = pid_to_ptid (retval); |
3ade5333 | 1450 | current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE); |
9d3789f7 | 1451 | } |
c2d11a7d JM |
1452 | |
1453 | out: | |
450005e7 | 1454 | return retval; |
c2d11a7d JM |
1455 | } |
1456 | ||
c2d11a7d | 1457 | /* Wait for interesting events to occur in the target process. */ |
39f77062 | 1458 | static ptid_t |
3ee6f623 | 1459 | win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus) |
c906108c | 1460 | { |
39f77062 KB |
1461 | int pid = PIDGET (ptid); |
1462 | ||
c44537cf CV |
1463 | target_terminal_ours (); |
1464 | ||
c906108c SS |
1465 | /* We loop when we get a non-standard exception rather than return |
1466 | with a SPURIOUS because resume can try and step or modify things, | |
1467 | which needs a current_thread->h. But some of these exceptions mark | |
1468 | the birth or death of threads, which mean that the current thread | |
1469 | isn't necessarily what you think it is. */ | |
1470 | ||
1471 | while (1) | |
450005e7 | 1472 | { |
3ee6f623 | 1473 | int retval = get_win32_debug_event (pid, ourstatus); |
450005e7 | 1474 | if (retval) |
39f77062 | 1475 | return pid_to_ptid (retval); |
450005e7 CF |
1476 | else |
1477 | { | |
1478 | int detach = 0; | |
c906108c | 1479 | |
98bbd631 AC |
1480 | if (deprecated_ui_loop_hook != NULL) |
1481 | detach = deprecated_ui_loop_hook (0); | |
7a292a7a | 1482 | |
450005e7 | 1483 | if (detach) |
3ee6f623 | 1484 | win32_kill_inferior (); |
450005e7 CF |
1485 | } |
1486 | } | |
c906108c SS |
1487 | } |
1488 | ||
9d3789f7 | 1489 | static void |
3ee6f623 | 1490 | do_initial_win32_stuff (DWORD pid) |
9d3789f7 CF |
1491 | { |
1492 | extern int stop_after_trap; | |
fa4ba8da | 1493 | int i; |
9d3789f7 | 1494 | |
7393af7c | 1495 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 CF |
1496 | event_count = 0; |
1497 | exception_count = 0; | |
bf25528d | 1498 | open_process_used = 0; |
fa4ba8da | 1499 | debug_registers_changed = 0; |
dfe7f3ac | 1500 | debug_registers_used = 0; |
fa4ba8da PM |
1501 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1502 | dr[i] = 0; | |
10325bc5 | 1503 | #ifdef __CYGWIN__ |
de1b3c3d | 1504 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1505 | #endif |
9d3789f7 CF |
1506 | current_event.dwProcessId = pid; |
1507 | memset (¤t_event, 0, sizeof (current_event)); | |
3ee6f623 | 1508 | push_target (&win32_ops); |
cb851954 | 1509 | disable_breakpoints_in_shlibs (); |
3ee6f623 | 1510 | win32_clear_solib (); |
9d3789f7 CF |
1511 | clear_proceed_status (); |
1512 | init_wait_for_inferior (); | |
1513 | ||
c44537cf | 1514 | terminal_init_inferior_with_pgrp (pid); |
9d3789f7 CF |
1515 | target_terminal_inferior (); |
1516 | ||
1517 | while (1) | |
1518 | { | |
1519 | stop_after_trap = 1; | |
1520 | wait_for_inferior (); | |
1521 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1522 | resume (0, stop_signal); | |
1523 | else | |
1524 | break; | |
1525 | } | |
1526 | stop_after_trap = 0; | |
1527 | return; | |
1528 | } | |
1529 | ||
02cc9f49 CV |
1530 | /* Since Windows XP, detaching from a process is supported by Windows. |
1531 | The following code tries loading the appropriate functions dynamically. | |
1532 | If loading these functions succeeds use them to actually detach from | |
1533 | the inferior process, otherwise behave as usual, pretending that | |
1534 | detach has worked. */ | |
1535 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1536 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1537 | ||
1538 | static int | |
5ae5f592 | 1539 | has_detach_ability (void) |
02cc9f49 CV |
1540 | { |
1541 | static HMODULE kernel32 = NULL; | |
1542 | ||
1543 | if (!kernel32) | |
1544 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1545 | if (kernel32) | |
1546 | { | |
1547 | if (!DebugSetProcessKillOnExit) | |
1548 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1549 | "DebugSetProcessKillOnExit"); | |
1550 | if (!DebugActiveProcessStop) | |
1551 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1552 | "DebugActiveProcessStop"); | |
1553 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1554 | return 1; | |
1555 | } | |
1556 | return 0; | |
1557 | } | |
c906108c | 1558 | |
616a9dc4 CV |
1559 | /* Try to set or remove a user privilege to the current process. Return -1 |
1560 | if that fails, the previous setting of that privilege otherwise. | |
1561 | ||
1562 | This code is copied from the Cygwin source code and rearranged to allow | |
1563 | dynamically loading of the needed symbols from advapi32 which is only | |
1564 | available on NT/2K/XP. */ | |
1565 | static int | |
1566 | set_process_privilege (const char *privilege, BOOL enable) | |
1567 | { | |
1568 | static HMODULE advapi32 = NULL; | |
1569 | static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE); | |
1570 | static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID); | |
1571 | static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, | |
1572 | DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
1573 | ||
1574 | HANDLE token_hdl = NULL; | |
1575 | LUID restore_priv; | |
1576 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1577 | int ret = -1; | |
1578 | DWORD size; | |
1579 | ||
1580 | if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */ | |
1581 | return 0; | |
1582 | ||
1583 | if (!advapi32) | |
1584 | { | |
1585 | if (!(advapi32 = LoadLibrary ("advapi32.dll"))) | |
1586 | goto out; | |
1587 | if (!OpenProcessToken) | |
1588 | OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken"); | |
1589 | if (!LookupPrivilegeValue) | |
1590 | LookupPrivilegeValue = GetProcAddress (advapi32, | |
1591 | "LookupPrivilegeValueA"); | |
1592 | if (!AdjustTokenPrivileges) | |
1593 | AdjustTokenPrivileges = GetProcAddress (advapi32, | |
1594 | "AdjustTokenPrivileges"); | |
1595 | if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges) | |
295732ea | 1596 | { |
616a9dc4 CV |
1597 | advapi32 = NULL; |
1598 | goto out; | |
1599 | } | |
1600 | } | |
295732ea | 1601 | |
616a9dc4 CV |
1602 | if (!OpenProcessToken (GetCurrentProcess (), |
1603 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1604 | &token_hdl)) | |
1605 | goto out; | |
1606 | ||
1607 | if (!LookupPrivilegeValue (NULL, privilege, &restore_priv)) | |
1608 | goto out; | |
1609 | ||
1610 | new_priv.PrivilegeCount = 1; | |
1611 | new_priv.Privileges[0].Luid = restore_priv; | |
1612 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1613 | ||
1614 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1615 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1616 | goto out; |
1617 | #if 0 | |
1618 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1619 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
3ee6f623 | 1620 | win32_attach(). */ |
616a9dc4 CV |
1621 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
1622 | be enabled. GetLastError () returns an correct error code, though. */ | |
1623 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) | |
1624 | goto out; | |
1625 | #endif | |
1626 | ||
1627 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1628 | ||
1629 | out: | |
1630 | if (token_hdl) | |
1631 | CloseHandle (token_hdl); | |
1632 | ||
1633 | return ret; | |
1634 | } | |
1635 | ||
02cc9f49 | 1636 | /* Attach to process PID, then initialize for debugging it. */ |
c906108c | 1637 | static void |
3ee6f623 | 1638 | win32_attach (char *args, int from_tty) |
c906108c SS |
1639 | { |
1640 | BOOL ok; | |
559e75c0 | 1641 | DWORD pid; |
c906108c SS |
1642 | |
1643 | if (!args) | |
e2e0b3e5 | 1644 | error_no_arg (_("process-id to attach")); |
c906108c | 1645 | |
616a9dc4 CV |
1646 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1647 | { | |
1648 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
1649 | printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n"); | |
1650 | } | |
1651 | ||
baa93fa6 CF |
1652 | pid = strtoul (args, 0, 0); /* Windows pid */ |
1653 | ||
3ee6f623 | 1654 | win32_init_thread_list (); |
9d3789f7 | 1655 | ok = DebugActiveProcess (pid); |
91a175b3 | 1656 | saw_create = 0; |
c906108c | 1657 | |
10325bc5 | 1658 | #ifdef __CYGWIN__ |
c906108c | 1659 | if (!ok) |
baa93fa6 CF |
1660 | { |
1661 | /* Try fall back to Cygwin pid */ | |
1662 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); | |
1663 | ||
1664 | if (pid > 0) | |
1665 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
1666 | } |
1667 | #endif | |
baa93fa6 | 1668 | |
10325bc5 PA |
1669 | if (!ok) |
1670 | error (_("Can't attach to process.")); | |
c906108c | 1671 | |
02cc9f49 | 1672 | if (has_detach_ability ()) |
3ade5333 CF |
1673 | DebugSetProcessKillOnExit (FALSE); |
1674 | ||
1675 | attach_flag = 1; | |
02cc9f49 | 1676 | |
c906108c SS |
1677 | if (from_tty) |
1678 | { | |
1679 | char *exec_file = (char *) get_exec_file (0); | |
1680 | ||
1681 | if (exec_file) | |
1682 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1683 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1684 | else |
1685 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1686 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1687 | |
1688 | gdb_flush (gdb_stdout); | |
1689 | } | |
1690 | ||
3ee6f623 | 1691 | do_initial_win32_stuff (pid); |
9d3789f7 | 1692 | target_terminal_ours (); |
c906108c SS |
1693 | } |
1694 | ||
1695 | static void | |
3ee6f623 | 1696 | win32_detach (char *args, int from_tty) |
c906108c | 1697 | { |
02cc9f49 CV |
1698 | int detached = 1; |
1699 | ||
1700 | if (has_detach_ability ()) | |
1701 | { | |
96998ce7 PA |
1702 | ptid_t ptid = {-1}; |
1703 | win32_resume (ptid, 0, TARGET_SIGNAL_0); | |
1704 | ||
02cc9f49 | 1705 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
3bccec63 | 1706 | { |
8a3fe4f8 | 1707 | error (_("Can't detach process %lu (error %lu)"), |
02cc9f49 CV |
1708 | current_event.dwProcessId, GetLastError ()); |
1709 | detached = 0; | |
3bccec63 | 1710 | } |
02cc9f49 CV |
1711 | DebugSetProcessKillOnExit (FALSE); |
1712 | } | |
1713 | if (detached && from_tty) | |
c906108c SS |
1714 | { |
1715 | char *exec_file = get_exec_file (0); | |
1716 | if (exec_file == 0) | |
1717 | exec_file = ""; | |
02cc9f49 CV |
1718 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1719 | current_event.dwProcessId); | |
c906108c SS |
1720 | gdb_flush (gdb_stdout); |
1721 | } | |
39f77062 | 1722 | inferior_ptid = null_ptid; |
3ee6f623 | 1723 | unpush_target (&win32_ops); |
c906108c SS |
1724 | } |
1725 | ||
3ee6f623 CF |
1726 | static char * |
1727 | win32_pid_to_exec_file (int pid) | |
47216e51 CV |
1728 | { |
1729 | /* Try to find the process path using the Cygwin internal process list | |
1730 | pid isn't a valid pid, unfortunately. Use current_event.dwProcessId | |
1731 | instead. */ | |
47216e51 CV |
1732 | |
1733 | static char path[MAX_PATH + 1]; | |
1734 | char *path_ptr = NULL; | |
10325bc5 PA |
1735 | |
1736 | #ifdef __CYGWIN__ | |
1737 | /* TODO: Also find native Windows processes using CW_GETPINFO_FULL. */ | |
47216e51 CV |
1738 | int cpid; |
1739 | struct external_pinfo *pinfo; | |
1740 | ||
1741 | cygwin_internal (CW_LOCK_PINFO, 1000); | |
1742 | for (cpid = 0; | |
1743 | (pinfo = (struct external_pinfo *) | |
3cb8e7f6 | 1744 | cygwin_internal (CW_GETPINFO, cpid | CW_NEXTPID)); |
47216e51 CV |
1745 | cpid = pinfo->pid) |
1746 | { | |
1747 | if (pinfo->dwProcessId == current_event.dwProcessId) /* Got it */ | |
1748 | { | |
3cb8e7f6 CF |
1749 | cygwin_conv_to_full_posix_path (pinfo->progname, path); |
1750 | path_ptr = path; | |
1751 | break; | |
47216e51 CV |
1752 | } |
1753 | } | |
1754 | cygwin_internal (CW_UNLOCK_PINFO); | |
10325bc5 PA |
1755 | #endif |
1756 | ||
3cb8e7f6 | 1757 | return path_ptr; |
47216e51 CV |
1758 | } |
1759 | ||
c906108c SS |
1760 | /* Print status information about what we're accessing. */ |
1761 | ||
1762 | static void | |
3ee6f623 | 1763 | win32_files_info (struct target_ops *ignore) |
c906108c SS |
1764 | { |
1765 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1766 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
1767 | } |
1768 | ||
c906108c | 1769 | static void |
3ee6f623 | 1770 | win32_open (char *arg, int from_tty) |
c906108c | 1771 | { |
8a3fe4f8 | 1772 | error (_("Use the \"run\" command to start a Unix child process.")); |
c906108c SS |
1773 | } |
1774 | ||
39f77062 | 1775 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
c906108c SS |
1776 | EXEC_FILE is the file to run. |
1777 | ALLARGS is a string containing the arguments to the program. | |
1778 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1779 | ||
1780 | static void | |
8efc5725 | 1781 | win32_create_inferior (char *exec_file, char *allargs, char **in_env, |
c27cda74 | 1782 | int from_tty) |
c906108c | 1783 | { |
c906108c SS |
1784 | STARTUPINFO si; |
1785 | PROCESS_INFORMATION pi; | |
c906108c SS |
1786 | BOOL ret; |
1787 | DWORD flags; | |
1788 | char *args; | |
dfe7f3ac CF |
1789 | char real_path[MAXPATHLEN]; |
1790 | char *toexec; | |
349b409f CF |
1791 | char shell[MAX_PATH + 1]; /* Path to shell */ |
1792 | const char *sh; | |
2becadee CF |
1793 | int tty; |
1794 | int ostdin, ostdout, ostderr; | |
3cb3b8df | 1795 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
c906108c SS |
1796 | |
1797 | if (!exec_file) | |
8a3fe4f8 | 1798 | error (_("No executable specified, use `target exec'.")); |
c906108c SS |
1799 | |
1800 | memset (&si, 0, sizeof (si)); | |
1801 | si.cb = sizeof (si); | |
1802 | ||
10325bc5 | 1803 | #ifdef __CYGWIN__ |
349b409f | 1804 | if (!useshell) |
dfe7f3ac CF |
1805 | { |
1806 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1807 | cygwin_conv_to_win32_path (exec_file, real_path); | |
1808 | toexec = real_path; | |
1809 | } | |
1810 | else | |
1811 | { | |
349b409f CF |
1812 | char *newallargs; |
1813 | sh = getenv ("SHELL"); | |
1814 | if (!sh) | |
1815 | sh = "/bin/sh"; | |
1816 | cygwin_conv_to_win32_path (sh, shell); | |
1817 | newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file) | |
1818 | + strlen (allargs) + 2); | |
dfe7f3ac CF |
1819 | sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs); |
1820 | allargs = newallargs; | |
1821 | toexec = shell; | |
1822 | flags = DEBUG_PROCESS; | |
1823 | } | |
10325bc5 PA |
1824 | #else |
1825 | toexec = exec_file; | |
1826 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1827 | #endif | |
c906108c | 1828 | |
eeb25b8a PM |
1829 | if (new_group) |
1830 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1831 | ||
1832 | if (new_console) | |
1833 | flags |= CREATE_NEW_CONSOLE; | |
1834 | ||
3ade5333 CF |
1835 | attach_flag = 0; |
1836 | ||
dfe7f3ac CF |
1837 | args = alloca (strlen (toexec) + strlen (allargs) + 2); |
1838 | strcpy (args, toexec); | |
c906108c SS |
1839 | strcat (args, " "); |
1840 | strcat (args, allargs); | |
1841 | ||
10325bc5 | 1842 | #ifdef __CYGWIN__ |
c906108c | 1843 | /* Prepare the environment vars for CreateProcess. */ |
002c07a9 | 1844 | cygwin_internal (CW_SYNC_WINENV); |
c906108c | 1845 | |
2becadee CF |
1846 | if (!inferior_io_terminal) |
1847 | tty = ostdin = ostdout = ostderr = -1; | |
1848 | else | |
1849 | { | |
1850 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
1851 | if (tty < 0) | |
1852 | { | |
1853 | print_sys_errmsg (inferior_io_terminal, errno); | |
1854 | ostdin = ostdout = ostderr = -1; | |
1855 | } | |
1856 | else | |
1857 | { | |
1858 | ostdin = dup (0); | |
1859 | ostdout = dup (1); | |
1860 | ostderr = dup (2); | |
1861 | dup2 (tty, 0); | |
1862 | dup2 (tty, 1); | |
1863 | dup2 (tty, 2); | |
1864 | } | |
1865 | } | |
10325bc5 | 1866 | #endif |
2becadee | 1867 | |
3ee6f623 | 1868 | win32_init_thread_list (); |
c906108c | 1869 | ret = CreateProcess (0, |
c5aa993b | 1870 | args, /* command line */ |
c906108c SS |
1871 | NULL, /* Security */ |
1872 | NULL, /* thread */ | |
1873 | TRUE, /* inherit handles */ | |
1874 | flags, /* start flags */ | |
002c07a9 | 1875 | NULL, /* environment */ |
c906108c SS |
1876 | NULL, /* current directory */ |
1877 | &si, | |
1878 | &pi); | |
10325bc5 PA |
1879 | |
1880 | #ifdef __CYGWIN__ | |
2becadee CF |
1881 | if (tty >= 0) |
1882 | { | |
1883 | close (tty); | |
1884 | dup2 (ostdin, 0); | |
1885 | dup2 (ostdout, 1); | |
1886 | dup2 (ostderr, 2); | |
1887 | close (ostdin); | |
1888 | close (ostdout); | |
1889 | close (ostderr); | |
1890 | } | |
10325bc5 | 1891 | #endif |
2becadee | 1892 | |
c906108c | 1893 | if (!ret) |
8a3fe4f8 AC |
1894 | error (_("Error creating process %s, (error %d)."), |
1895 | exec_file, (unsigned) GetLastError ()); | |
c906108c | 1896 | |
dfe7f3ac CF |
1897 | if (useshell && shell[0] != '\0') |
1898 | saw_create = -1; | |
1899 | else | |
1900 | saw_create = 0; | |
1901 | ||
3ee6f623 | 1902 | do_initial_win32_stuff (pi.dwProcessId); |
ed9a39eb | 1903 | |
3ee6f623 | 1904 | /* win32_continue (DBG_CONTINUE, -1); */ |
c906108c SS |
1905 | } |
1906 | ||
1907 | static void | |
3ee6f623 | 1908 | win32_mourn_inferior (void) |
c906108c | 1909 | { |
3ee6f623 | 1910 | (void) win32_continue (DBG_CONTINUE, -1); |
fa4ba8da | 1911 | i386_cleanup_dregs(); |
bf25528d CF |
1912 | if (open_process_used) |
1913 | { | |
1914 | CHECK (CloseHandle (current_process_handle)); | |
1915 | open_process_used = 0; | |
1916 | } | |
3ee6f623 | 1917 | unpush_target (&win32_ops); |
c906108c SS |
1918 | generic_mourn_inferior (); |
1919 | } | |
1920 | ||
1921 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
1922 | ^C on the controlling terminal. */ | |
1923 | ||
1924 | static void | |
3ee6f623 | 1925 | win32_stop (void) |
c906108c SS |
1926 | { |
1927 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); | |
c2d11a7d | 1928 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
c5aa993b | 1929 | registers_changed (); /* refresh register state */ |
c906108c SS |
1930 | } |
1931 | ||
3ee6f623 CF |
1932 | static int |
1933 | win32_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len, | |
0a65a603 AC |
1934 | int write, struct mem_attrib *mem, |
1935 | struct target_ops *target) | |
c906108c | 1936 | { |
6f17862b | 1937 | DWORD done = 0; |
c906108c SS |
1938 | if (write) |
1939 | { | |
29fe111d | 1940 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
2c647436 PM |
1941 | len, (DWORD) (uintptr_t) memaddr)); |
1942 | if (!WriteProcessMemory (current_process_handle, | |
1943 | (LPVOID) (uintptr_t) memaddr, our, | |
6f17862b CF |
1944 | len, &done)) |
1945 | done = 0; | |
2c647436 PM |
1946 | FlushInstructionCache (current_process_handle, |
1947 | (LPCVOID) (uintptr_t) memaddr, len); | |
c906108c SS |
1948 | } |
1949 | else | |
1950 | { | |
29fe111d | 1951 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
2c647436 PM |
1952 | len, (DWORD) (uintptr_t) memaddr)); |
1953 | if (!ReadProcessMemory (current_process_handle, | |
1954 | (LPCVOID) (uintptr_t) memaddr, our, | |
6f17862b CF |
1955 | len, &done)) |
1956 | done = 0; | |
c906108c SS |
1957 | } |
1958 | return done; | |
1959 | } | |
1960 | ||
3ee6f623 CF |
1961 | static void |
1962 | win32_kill_inferior (void) | |
c906108c SS |
1963 | { |
1964 | CHECK (TerminateProcess (current_process_handle, 0)); | |
1965 | ||
1966 | for (;;) | |
1967 | { | |
3ee6f623 | 1968 | if (!win32_continue (DBG_CONTINUE, -1)) |
c906108c SS |
1969 | break; |
1970 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
1971 | break; | |
1972 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
1973 | break; | |
1974 | } | |
1975 | ||
3ee6f623 | 1976 | target_mourn_inferior (); /* or just win32_mourn_inferior? */ |
c906108c SS |
1977 | } |
1978 | ||
c906108c | 1979 | static void |
316f2060 | 1980 | win32_prepare_to_store (struct regcache *regcache) |
c906108c SS |
1981 | { |
1982 | /* Do nothing, since we can store individual regs */ | |
1983 | } | |
1984 | ||
1985 | static int | |
3ee6f623 | 1986 | win32_can_run (void) |
c906108c SS |
1987 | { |
1988 | return 1; | |
1989 | } | |
1990 | ||
1991 | static void | |
3ee6f623 | 1992 | win32_close (int x) |
c906108c | 1993 | { |
3ee6f623 | 1994 | DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n", |
3bccec63 | 1995 | PIDGET (inferior_ptid))); |
c906108c SS |
1996 | } |
1997 | ||
3ee6f623 CF |
1998 | /* Convert pid to printable format. */ |
1999 | static char * | |
10325bc5 | 2000 | win32_pid_to_str (ptid_t ptid) |
c906108c | 2001 | { |
3ee6f623 CF |
2002 | static char buf[80]; |
2003 | int pid = PIDGET (ptid); | |
2004 | ||
2005 | if ((DWORD) pid == current_event.dwProcessId) | |
2006 | sprintf (buf, "process %d", pid); | |
2007 | else | |
2008 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); | |
2009 | return buf; | |
2010 | } | |
2011 | ||
de1b3c3d PA |
2012 | static LONGEST |
2013 | win32_xfer_shared_libraries (struct target_ops *ops, | |
2014 | enum target_object object, const char *annex, | |
2015 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2016 | ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2017 | { |
de1b3c3d PA |
2018 | struct obstack obstack; |
2019 | const char *buf; | |
2020 | LONGEST len_avail; | |
3cb8e7f6 | 2021 | struct so_list *so; |
3cb8e7f6 | 2022 | |
de1b3c3d PA |
2023 | if (writebuf) |
2024 | return -1; | |
3cb8e7f6 | 2025 | |
de1b3c3d PA |
2026 | obstack_init (&obstack); |
2027 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2028 | for (so = solib_start.next; so; so = so->next) | |
2029 | win32_xfer_shared_library (so->so_name, so->lm_info->load_addr, &obstack); | |
2030 | obstack_grow_str0 (&obstack, "</library-list>\n"); | |
3cb8e7f6 | 2031 | |
de1b3c3d PA |
2032 | buf = obstack_finish (&obstack); |
2033 | len_avail = strlen (buf); | |
2034 | if (offset >= len_avail) | |
2035 | return 0; | |
3cb8e7f6 | 2036 | |
de1b3c3d PA |
2037 | if (len > len_avail - offset) |
2038 | len = len_avail - offset; | |
2039 | memcpy (readbuf, buf + offset, len); | |
3cb8e7f6 | 2040 | |
de1b3c3d PA |
2041 | obstack_free (&obstack, NULL); |
2042 | return len; | |
3cb8e7f6 CF |
2043 | } |
2044 | ||
de1b3c3d PA |
2045 | static LONGEST |
2046 | win32_xfer_partial (struct target_ops *ops, enum target_object object, | |
2047 | const char *annex, gdb_byte *readbuf, | |
2048 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2049 | { |
de1b3c3d | 2050 | switch (object) |
3cb8e7f6 | 2051 | { |
de1b3c3d PA |
2052 | case TARGET_OBJECT_MEMORY: |
2053 | if (readbuf) | |
2054 | return (*ops->deprecated_xfer_memory) (offset, readbuf, | |
2055 | len, 0/*write*/, NULL, ops); | |
2056 | if (writebuf) | |
2057 | return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf, | |
2058 | len, 1/*write*/, NULL, ops); | |
2059 | return -1; | |
2060 | ||
2061 | case TARGET_OBJECT_LIBRARIES: | |
2062 | return win32_xfer_shared_libraries (ops, object, annex, readbuf, | |
2063 | writebuf, offset, len); | |
3929abe9 | 2064 | |
de1b3c3d PA |
2065 | default: |
2066 | if (ops->beneath != NULL) | |
2067 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
2068 | readbuf, writebuf, offset, len); | |
2069 | return -1; | |
3929abe9 | 2070 | } |
02c5aecd CF |
2071 | } |
2072 | ||
3ee6f623 CF |
2073 | static void |
2074 | init_win32_ops (void) | |
2075 | { | |
2076 | win32_ops.to_shortname = "child"; | |
2077 | win32_ops.to_longname = "Win32 child process"; | |
2078 | win32_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
2079 | win32_ops.to_open = win32_open; | |
2080 | win32_ops.to_close = win32_close; | |
2081 | win32_ops.to_attach = win32_attach; | |
2082 | win32_ops.to_detach = win32_detach; | |
2083 | win32_ops.to_resume = win32_resume; | |
2084 | win32_ops.to_wait = win32_wait; | |
2085 | win32_ops.to_fetch_registers = win32_fetch_inferior_registers; | |
2086 | win32_ops.to_store_registers = win32_store_inferior_registers; | |
2087 | win32_ops.to_prepare_to_store = win32_prepare_to_store; | |
2088 | win32_ops.deprecated_xfer_memory = win32_xfer_memory; | |
de1b3c3d | 2089 | win32_ops.to_xfer_partial = win32_xfer_partial; |
3ee6f623 CF |
2090 | win32_ops.to_files_info = win32_files_info; |
2091 | win32_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
2092 | win32_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
2093 | win32_ops.to_terminal_init = terminal_init_inferior; | |
2094 | win32_ops.to_terminal_inferior = terminal_inferior; | |
2095 | win32_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
2096 | win32_ops.to_terminal_ours = terminal_ours; | |
2097 | win32_ops.to_terminal_save_ours = terminal_save_ours; | |
2098 | win32_ops.to_terminal_info = child_terminal_info; | |
2099 | win32_ops.to_kill = win32_kill_inferior; | |
2100 | win32_ops.to_create_inferior = win32_create_inferior; | |
2101 | win32_ops.to_mourn_inferior = win32_mourn_inferior; | |
2102 | win32_ops.to_can_run = win32_can_run; | |
2103 | win32_ops.to_thread_alive = win32_win32_thread_alive; | |
10325bc5 | 2104 | win32_ops.to_pid_to_str = win32_pid_to_str; |
3ee6f623 CF |
2105 | win32_ops.to_stop = win32_stop; |
2106 | win32_ops.to_stratum = process_stratum; | |
2107 | win32_ops.to_has_all_memory = 1; | |
2108 | win32_ops.to_has_memory = 1; | |
2109 | win32_ops.to_has_stack = 1; | |
2110 | win32_ops.to_has_registers = 1; | |
2111 | win32_ops.to_has_execution = 1; | |
2112 | win32_ops.to_magic = OPS_MAGIC; | |
2113 | win32_ops.to_pid_to_exec_file = win32_pid_to_exec_file; | |
c906108c SS |
2114 | } |
2115 | ||
3929abe9 CF |
2116 | static void |
2117 | set_win32_aliases (char *argv0) | |
2118 | { | |
2119 | add_info_alias ("dll", "sharedlibrary", 1); | |
2120 | } | |
2121 | ||
c906108c | 2122 | void |
a6b6b089 | 2123 | _initialize_win32_nat (void) |
c906108c | 2124 | { |
fa58ee11 EZ |
2125 | struct cmd_list_element *c; |
2126 | ||
3ee6f623 | 2127 | init_win32_ops (); |
c906108c | 2128 | |
fa58ee11 | 2129 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1bedd215 | 2130 | _("Load dll library symbols from FILE.")); |
5ba2abeb | 2131 | set_cmd_completer (c, filename_completer); |
450005e7 CF |
2132 | |
2133 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
2134 | ||
10325bc5 | 2135 | #ifdef __CYGWIN__ |
5bf193a2 AC |
2136 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
2137 | Set use of shell to start subprocess."), _("\ | |
2138 | Show use of shell to start subprocess."), NULL, | |
2139 | NULL, | |
2140 | NULL, /* FIXME: i18n: */ | |
2141 | &setlist, &showlist); | |
2142 | ||
09280ddf CF |
2143 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\ |
2144 | Break when an exception is detected in the Cygwin DLL itself."), _("\ | |
2145 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
2146 | NULL, | |
2147 | NULL, /* FIXME: i18n: */ | |
2148 | &setlist, &showlist); | |
10325bc5 | 2149 | #endif |
09280ddf | 2150 | |
5bf193a2 AC |
2151 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
2152 | Set creation of new console when creating child process."), _("\ | |
2153 | Show creation of new console when creating child process."), NULL, | |
2154 | NULL, | |
2155 | NULL, /* FIXME: i18n: */ | |
2156 | &setlist, &showlist); | |
2157 | ||
2158 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
2159 | Set creation of new group when creating child process."), _("\ | |
2160 | Show creation of new group when creating child process."), NULL, | |
2161 | NULL, | |
2162 | NULL, /* FIXME: i18n: */ | |
2163 | &setlist, &showlist); | |
2164 | ||
2165 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
2166 | Set whether to display execution in child process."), _("\ | |
2167 | Show whether to display execution in child process."), NULL, | |
2168 | NULL, | |
2169 | NULL, /* FIXME: i18n: */ | |
2170 | &setlist, &showlist); | |
2171 | ||
2172 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
2173 | Set whether to display kernel events in child process."), _("\ | |
2174 | Show whether to display kernel events in child process."), NULL, | |
2175 | NULL, | |
2176 | NULL, /* FIXME: i18n: */ | |
2177 | &setlist, &showlist); | |
2178 | ||
2179 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
2180 | Set whether to display memory accesses in child process."), _("\ | |
2181 | Show whether to display memory accesses in child process."), NULL, | |
2182 | NULL, | |
2183 | NULL, /* FIXME: i18n: */ | |
2184 | &setlist, &showlist); | |
2185 | ||
2186 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
2187 | &debug_exceptions, _("\ | |
2188 | Set whether to display kernel exceptions in child process."), _("\ | |
2189 | Show whether to display kernel exceptions in child process."), NULL, | |
2190 | NULL, | |
2191 | NULL, /* FIXME: i18n: */ | |
2192 | &setlist, &showlist); | |
c906108c | 2193 | |
c1748f97 | 2194 | add_prefix_cmd ("w32", class_info, info_w32_command, |
1bedd215 | 2195 | _("Print information specific to Win32 debugging."), |
baa93fa6 | 2196 | &info_w32_cmdlist, "info w32 ", 0, &infolist); |
c1748f97 PM |
2197 | |
2198 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 2199 | _("Display selectors infos."), |
c1748f97 | 2200 | &info_w32_cmdlist); |
3ee6f623 | 2201 | add_target (&win32_ops); |
3929abe9 | 2202 | deprecated_init_ui_hook = set_win32_aliases; |
c906108c SS |
2203 | } |
2204 | ||
fa4ba8da PM |
2205 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
2206 | ||
2207 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
2208 | Here we just store the address in dr array, the registers will be | |
3ee6f623 | 2209 | actually set up when win32_continue is called. */ |
fa4ba8da PM |
2210 | void |
2211 | cygwin_set_dr (int i, CORE_ADDR addr) | |
2212 | { | |
2213 | if (i < 0 || i > 3) | |
2214 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2215 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
fa4ba8da PM |
2216 | dr[i] = (unsigned) addr; |
2217 | debug_registers_changed = 1; | |
2218 | debug_registers_used = 1; | |
2219 | } | |
2220 | ||
2221 | /* Pass the value VAL to the inferior in the DR7 debug control | |
2222 | register. Here we just store the address in D_REGS, the watchpoint | |
3ee6f623 | 2223 | will be actually set up in win32_wait. */ |
fa4ba8da PM |
2224 | void |
2225 | cygwin_set_dr7 (unsigned val) | |
2226 | { | |
2227 | dr[7] = val; | |
2228 | debug_registers_changed = 1; | |
2229 | debug_registers_used = 1; | |
2230 | } | |
2231 | ||
2232 | /* Get the value of the DR6 debug status register from the inferior. | |
2233 | Here we just return the value stored in dr[6] | |
2234 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
2235 | unsigned | |
2236 | cygwin_get_dr6 (void) | |
2237 | { | |
2238 | return dr[6]; | |
2239 | } | |
2240 | ||
c906108c SS |
2241 | /* Determine if the thread referenced by "pid" is alive |
2242 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
2243 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
2244 | static int | |
3ee6f623 | 2245 | win32_win32_thread_alive (ptid_t ptid) |
c906108c | 2246 | { |
39f77062 KB |
2247 | int pid = PIDGET (ptid); |
2248 | ||
c5aa993b JM |
2249 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
2250 | FALSE : TRUE; | |
c906108c SS |
2251 | } |
2252 | ||
2a3d5645 CF |
2253 | void |
2254 | _initialize_check_for_gdb_ini (void) | |
2255 | { | |
2256 | char *homedir; | |
2257 | if (inhibit_gdbinit) | |
2258 | return; | |
2259 | ||
2260 | homedir = getenv ("HOME"); | |
2261 | if (homedir) | |
2262 | { | |
2263 | char *p; | |
2264 | char *oldini = (char *) alloca (strlen (homedir) + | |
2265 | sizeof ("/gdb.ini")); | |
2266 | strcpy (oldini, homedir); | |
2267 | p = strchr (oldini, '\0'); | |
2268 | if (p > oldini && p[-1] != '/') | |
2269 | *p++ = '/'; | |
2270 | strcpy (p, "gdb.ini"); | |
2271 | if (access (oldini, 0) == 0) | |
2272 | { | |
2273 | int len = strlen (oldini); | |
2274 | char *newini = alloca (len + 1); | |
dfe7f3ac | 2275 | sprintf (newini, "%.*s.gdbinit", |
58fa08f0 | 2276 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 2277 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
2278 | } |
2279 | } | |
2280 | } |