Commit | Line | Data |
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24e60978 | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
b6ba6518 KB |
2 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
e6433c28 | 4 | Contributed by Cygnus Solutions, A Red Hat Company. |
e88c49c3 | 5 | |
24e60978 SC |
6 | This file is part of GDB. |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without eve nthe implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
3a4b77d8 | 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
4e052eda | 21 | Boston, MA 02111-1307, USA. */ |
24e60978 SC |
22 | |
23 | /* by Steve Chamberlain, sac@cygnus.com */ | |
24 | ||
3cee93ac | 25 | /* We assume we're being built with and will be used for cygwin. */ |
e88c49c3 | 26 | |
24e60978 | 27 | #include "defs.h" |
97da3b20 | 28 | #include "tm.h" /* required for SSE registers */ |
24e60978 SC |
29 | #include "frame.h" /* required by inferior.h */ |
30 | #include "inferior.h" | |
31 | #include "target.h" | |
24e60978 SC |
32 | #include "gdbcore.h" |
33 | #include "command.h" | |
fa58ee11 | 34 | #include "completer.h" |
4e052eda | 35 | #include "regcache.h" |
2a3d5645 | 36 | #include "top.h" |
24e60978 SC |
37 | #include <signal.h> |
38 | #include <sys/types.h> | |
39 | #include <fcntl.h> | |
cad9cd60 | 40 | #include <stdlib.h> |
cad9cd60 | 41 | #include <windows.h> |
1e37c281 | 42 | #include <imagehlp.h> |
29fe111d | 43 | #include <sys/cygwin.h> |
cad9cd60 | 44 | |
24e60978 | 45 | #include "buildsym.h" |
1ef980b9 SC |
46 | #include "symfile.h" |
47 | #include "objfiles.h" | |
24e60978 | 48 | #include "gdb_string.h" |
fdfa3315 | 49 | #include "gdbthread.h" |
24e60978 | 50 | #include "gdbcmd.h" |
1750a5ef | 51 | #include <sys/param.h> |
1e37c281 | 52 | #include <unistd.h> |
24e60978 | 53 | |
0714f9bf | 54 | /* The ui's event loop. */ |
507f3c78 | 55 | extern int (*ui_loop_hook) (int signo); |
0714f9bf SS |
56 | |
57 | /* If we're not using the old Cygwin header file set, define the | |
58 | following which never should have been in the generic Win32 API | |
59 | headers in the first place since they were our own invention... */ | |
60 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 61 | enum |
8e860359 CF |
62 | { |
63 | FLAG_TRACE_BIT = 0x100, | |
64 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
65 | }; | |
0714f9bf | 66 | #endif |
8e860359 CF |
67 | #include <sys/procfs.h> |
68 | #include <psapi.h> | |
0714f9bf | 69 | |
97da3b20 | 70 | #ifdef HAVE_SSE_REGS |
3bccec63 | 71 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_EXTENDED_REGISTERS |
97da3b20 CF |
72 | #else |
73 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | |
74 | #endif | |
75 | ||
76 | ||
3cee93ac CF |
77 | /* The string sent by cygwin when it processes a signal. |
78 | FIXME: This should be in a cygwin include file. */ | |
79 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
80 | ||
29fe111d | 81 | #define CHECK(x) check (x, __FILE__,__LINE__) |
1ef980b9 SC |
82 | #define DEBUG_EXEC(x) if (debug_exec) printf x |
83 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
84 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
85 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
24e60978 SC |
86 | |
87 | /* Forward declaration */ | |
88 | extern struct target_ops child_ops; | |
89 | ||
a14ed312 | 90 | static void child_stop (void); |
39f77062 | 91 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 92 | void child_kill_inferior (void); |
3cee93ac | 93 | |
8a892701 CF |
94 | static int last_sig = 0; /* Set if a signal was received from the |
95 | debugged process */ | |
3cee93ac CF |
96 | /* Thread information structure used to track information that is |
97 | not available in gdb's thread structure. */ | |
98 | typedef struct thread_info_struct | |
3a4b77d8 JM |
99 | { |
100 | struct thread_info_struct *next; | |
101 | DWORD id; | |
102 | HANDLE h; | |
103 | char *name; | |
104 | int suspend_count; | |
105 | CONTEXT context; | |
1e37c281 | 106 | STACKFRAME sf; |
8e860359 CF |
107 | } |
108 | thread_info; | |
1e37c281 | 109 | |
29fe111d | 110 | static thread_info thread_head; |
24e60978 | 111 | |
24e60978 SC |
112 | /* The process and thread handles for the above context. */ |
113 | ||
3cee93ac CF |
114 | static DEBUG_EVENT current_event; /* The current debug event from |
115 | WaitForDebugEvent */ | |
116 | static HANDLE current_process_handle; /* Currently executing process */ | |
117 | static thread_info *current_thread; /* Info on currently selected thread */ | |
3a4b77d8 | 118 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
119 | |
120 | /* Counts of things. */ | |
121 | static int exception_count = 0; | |
122 | static int event_count = 0; | |
123 | ||
124 | /* User options. */ | |
125 | static int new_console = 0; | |
1e37c281 | 126 | static int new_group = 1; |
3a4b77d8 JM |
127 | static int debug_exec = 0; /* show execution */ |
128 | static int debug_events = 0; /* show events from kernel */ | |
129 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 130 | static int debug_exceptions = 0; /* show target exceptions */ |
24e60978 SC |
131 | |
132 | /* This vector maps GDB's idea of a register's number into an address | |
3cee93ac | 133 | in the win32 exception context vector. |
24e60978 | 134 | |
3cee93ac | 135 | It also contains the bit mask needed to load the register in question. |
24e60978 SC |
136 | |
137 | One day we could read a reg, we could inspect the context we | |
138 | already have loaded, if it doesn't have the bit set that we need, | |
139 | we read that set of registers in using GetThreadContext. If the | |
140 | context already contains what we need, we just unpack it. Then to | |
141 | write a register, first we have to ensure that the context contains | |
142 | the other regs of the group, and then we copy the info in and set | |
143 | out bit. */ | |
144 | ||
3cee93ac CF |
145 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) |
146 | static const int mappings[] = | |
24e60978 | 147 | { |
3a4b77d8 JM |
148 | context_offset (Eax), |
149 | context_offset (Ecx), | |
150 | context_offset (Edx), | |
151 | context_offset (Ebx), | |
152 | context_offset (Esp), | |
153 | context_offset (Ebp), | |
154 | context_offset (Esi), | |
155 | context_offset (Edi), | |
156 | context_offset (Eip), | |
157 | context_offset (EFlags), | |
158 | context_offset (SegCs), | |
159 | context_offset (SegSs), | |
160 | context_offset (SegDs), | |
161 | context_offset (SegEs), | |
162 | context_offset (SegFs), | |
163 | context_offset (SegGs), | |
164 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
165 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
166 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
167 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
168 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
169 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
170 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
171 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
1e37c281 JM |
172 | context_offset (FloatSave.ControlWord), |
173 | context_offset (FloatSave.StatusWord), | |
174 | context_offset (FloatSave.TagWord), | |
175 | context_offset (FloatSave.ErrorSelector), | |
176 | context_offset (FloatSave.ErrorOffset), | |
177 | context_offset (FloatSave.DataSelector), | |
178 | context_offset (FloatSave.DataOffset), | |
d3a09475 | 179 | context_offset (FloatSave.ErrorSelector) |
97da3b20 CF |
180 | #ifdef HAVE_SSE_REGS |
181 | /* XMM0-7 */ , | |
441532d7 PM |
182 | context_offset (ExtendedRegisters[10*16]), |
183 | context_offset (ExtendedRegisters[11*16]), | |
184 | context_offset (ExtendedRegisters[12*16]), | |
185 | context_offset (ExtendedRegisters[13*16]), | |
186 | context_offset (ExtendedRegisters[14*16]), | |
187 | context_offset (ExtendedRegisters[15*16]), | |
188 | context_offset (ExtendedRegisters[16*16]), | |
189 | context_offset (ExtendedRegisters[17*16]), | |
190 | /* MXCSR */ | |
191 | context_offset (ExtendedRegisters[24]) | |
97da3b20 | 192 | #endif |
24e60978 SC |
193 | }; |
194 | ||
d3a09475 JM |
195 | #undef context_offset |
196 | ||
24e60978 SC |
197 | /* This vector maps the target's idea of an exception (extracted |
198 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
199 | ||
200 | struct xlate_exception | |
201 | { | |
202 | int them; | |
203 | enum target_signal us; | |
204 | }; | |
205 | ||
24e60978 SC |
206 | static const struct xlate_exception |
207 | xlate[] = | |
208 | { | |
209 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 210 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
211 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
212 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
213 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
214 | {-1, -1}}; | |
215 | ||
3cee93ac CF |
216 | /* Find a thread record given a thread id. |
217 | If get_context then also retrieve the context for this | |
218 | thread. */ | |
219 | static thread_info * | |
220 | thread_rec (DWORD id, int get_context) | |
24e60978 | 221 | { |
3cee93ac CF |
222 | thread_info *th; |
223 | ||
3a4b77d8 | 224 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
225 | if (th->id == id) |
226 | { | |
227 | if (!th->suspend_count && get_context) | |
228 | { | |
8a892701 | 229 | if (get_context > 0 && id != current_event.dwThreadId) |
3cee93ac CF |
230 | th->suspend_count = SuspendThread (th->h) + 1; |
231 | else if (get_context < 0) | |
232 | th->suspend_count = -1; | |
233 | ||
97da3b20 | 234 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
3cee93ac CF |
235 | GetThreadContext (th->h, &th->context); |
236 | } | |
237 | return th; | |
238 | } | |
239 | ||
240 | return NULL; | |
241 | } | |
242 | ||
243 | /* Add a thread to the thread list */ | |
244 | static thread_info * | |
3a4b77d8 | 245 | child_add_thread (DWORD id, HANDLE h) |
3cee93ac CF |
246 | { |
247 | thread_info *th; | |
248 | ||
249 | if ((th = thread_rec (id, FALSE))) | |
250 | return th; | |
251 | ||
252 | th = (thread_info *) xmalloc (sizeof (*th)); | |
3a4b77d8 | 253 | memset (th, 0, sizeof (*th)); |
3cee93ac CF |
254 | th->id = id; |
255 | th->h = h; | |
256 | th->next = thread_head.next; | |
257 | thread_head.next = th; | |
39f77062 | 258 | add_thread (pid_to_ptid (id)); |
3cee93ac | 259 | return th; |
24e60978 SC |
260 | } |
261 | ||
3cee93ac CF |
262 | /* Clear out any old thread list and reintialize it to a |
263 | pristine state. */ | |
24e60978 | 264 | static void |
fba45db2 | 265 | child_init_thread_list (void) |
24e60978 | 266 | { |
3cee93ac CF |
267 | thread_info *th = &thread_head; |
268 | ||
269 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
270 | init_thread_list (); | |
271 | while (th->next != NULL) | |
24e60978 | 272 | { |
3cee93ac CF |
273 | thread_info *here = th->next; |
274 | th->next = here->next; | |
275 | (void) CloseHandle (here->h); | |
b8c9b27d | 276 | xfree (here); |
24e60978 | 277 | } |
3cee93ac CF |
278 | } |
279 | ||
280 | /* Delete a thread from the list of threads */ | |
281 | static void | |
282 | child_delete_thread (DWORD id) | |
283 | { | |
284 | thread_info *th; | |
285 | ||
286 | if (info_verbose) | |
39f77062 KB |
287 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
288 | delete_thread (pid_to_ptid (id)); | |
3cee93ac CF |
289 | |
290 | for (th = &thread_head; | |
291 | th->next != NULL && th->next->id != id; | |
292 | th = th->next) | |
293 | continue; | |
294 | ||
295 | if (th->next != NULL) | |
24e60978 | 296 | { |
3cee93ac CF |
297 | thread_info *here = th->next; |
298 | th->next = here->next; | |
299 | CloseHandle (here->h); | |
b8c9b27d | 300 | xfree (here); |
24e60978 SC |
301 | } |
302 | } | |
303 | ||
304 | static void | |
3cee93ac CF |
305 | check (BOOL ok, const char *file, int line) |
306 | { | |
307 | if (!ok) | |
29fe111d | 308 | printf_filtered ("error return %s:%d was %lu\n", file, line, GetLastError ()); |
3cee93ac CF |
309 | } |
310 | ||
311 | static void | |
312 | do_child_fetch_inferior_registers (int r) | |
24e60978 | 313 | { |
1e37c281 JM |
314 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
315 | long l; | |
316 | if (r == FCS_REGNUM) | |
317 | { | |
8e860359 | 318 | l = *((long *) context_offset) & 0xffff; |
1e37c281 JM |
319 | supply_register (r, (char *) &l); |
320 | } | |
321 | else if (r == FOP_REGNUM) | |
322 | { | |
8e860359 | 323 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
1e37c281 JM |
324 | supply_register (r, (char *) &l); |
325 | } | |
326 | else if (r >= 0) | |
d3a09475 | 327 | supply_register (r, context_offset); |
3cee93ac | 328 | else |
24e60978 SC |
329 | { |
330 | for (r = 0; r < NUM_REGS; r++) | |
3cee93ac | 331 | do_child_fetch_inferior_registers (r); |
24e60978 | 332 | } |
3cee93ac CF |
333 | } |
334 | ||
335 | static void | |
336 | child_fetch_inferior_registers (int r) | |
337 | { | |
39f77062 | 338 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
3cee93ac CF |
339 | do_child_fetch_inferior_registers (r); |
340 | } | |
341 | ||
342 | static void | |
343 | do_child_store_inferior_registers (int r) | |
344 | { | |
345 | if (r >= 0) | |
346 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
24e60978 SC |
347 | else |
348 | { | |
3cee93ac CF |
349 | for (r = 0; r < NUM_REGS; r++) |
350 | do_child_store_inferior_registers (r); | |
24e60978 SC |
351 | } |
352 | } | |
353 | ||
3cee93ac CF |
354 | /* Store a new register value into the current thread context */ |
355 | static void | |
356 | child_store_inferior_registers (int r) | |
357 | { | |
39f77062 | 358 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
3cee93ac CF |
359 | do_child_store_inferior_registers (r); |
360 | } | |
24e60978 | 361 | |
1e37c281 JM |
362 | static int psapi_loaded = 0; |
363 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
364 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
365 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
366 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
1e37c281 | 367 | |
3bccec63 | 368 | int |
8e860359 | 369 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
1e37c281 JM |
370 | { |
371 | DWORD len; | |
372 | MODULEINFO mi; | |
373 | int i; | |
8e860359 CF |
374 | HMODULE dh_buf[1]; |
375 | HMODULE *DllHandle = dh_buf; | |
1e37c281 JM |
376 | DWORD cbNeeded; |
377 | BOOL ok; | |
378 | ||
379 | if (!psapi_loaded || | |
8e860359 CF |
380 | psapi_EnumProcessModules == NULL || |
381 | psapi_GetModuleInformation == NULL || | |
382 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 | 383 | { |
8e860359 CF |
384 | if (psapi_loaded) |
385 | goto failed; | |
1e37c281 JM |
386 | psapi_loaded = 1; |
387 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
388 | if (!psapi_module_handle) | |
8e860359 CF |
389 | { |
390 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
391 | goto failed; | |
392 | } | |
393 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
1e37c281 JM |
394 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
395 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
396 | "GetModuleFileNameExA"); |
397 | if (psapi_EnumProcessModules == NULL || | |
398 | psapi_GetModuleInformation == NULL || | |
399 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 JM |
400 | goto failed; |
401 | } | |
402 | ||
403 | cbNeeded = 0; | |
404 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
405 | DllHandle, |
406 | sizeof (HMODULE), | |
407 | &cbNeeded); | |
1e37c281 JM |
408 | |
409 | if (!ok || !cbNeeded) | |
410 | goto failed; | |
411 | ||
8e860359 | 412 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
413 | if (!DllHandle) |
414 | goto failed; | |
415 | ||
416 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
417 | DllHandle, |
418 | cbNeeded, | |
419 | &cbNeeded); | |
1e37c281 JM |
420 | if (!ok) |
421 | goto failed; | |
422 | ||
29fe111d | 423 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 JM |
424 | { |
425 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
426 | DllHandle[i], |
427 | &mi, | |
428 | sizeof (mi))) | |
1e37c281 JM |
429 | error ("Can't get module info"); |
430 | ||
431 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
432 | DllHandle[i], |
433 | dll_name_ret, | |
434 | MAX_PATH); | |
1e37c281 | 435 | if (len == 0) |
29fe111d | 436 | error ("Error getting dll name: %u\n", GetLastError ()); |
1e37c281 JM |
437 | |
438 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
439 | return 1; | |
440 | } | |
441 | ||
442 | failed: | |
443 | dll_name_ret[0] = '\0'; | |
444 | return 0; | |
445 | } | |
446 | ||
450005e7 CF |
447 | /* Encapsulate the information required in a call to |
448 | symbol_file_add_args */ | |
8a892701 CF |
449 | struct safe_symbol_file_add_args |
450 | { | |
451 | char *name; | |
452 | int from_tty; | |
453 | struct section_addr_info *addrs; | |
454 | int mainline; | |
455 | int flags; | |
7c5c87c0 | 456 | struct ui_file *err, *out; |
8a892701 CF |
457 | struct objfile *ret; |
458 | }; | |
459 | ||
02e423b9 CF |
460 | /* Maintain a linked list of "so" information. */ |
461 | struct so_stuff | |
462 | { | |
d3ff4a77 | 463 | struct so_stuff *next; |
02e423b9 | 464 | DWORD load_addr; |
7470a420 | 465 | int loaded; |
d3ff4a77 | 466 | struct objfile *objfile; |
7470a420 CF |
467 | char name[1]; |
468 | } solib_start, *solib_end; | |
02e423b9 | 469 | |
450005e7 CF |
470 | /* Call symbol_file_add with stderr redirected. We don't care if there |
471 | are errors. */ | |
8a892701 CF |
472 | static int |
473 | safe_symbol_file_add_stub (void *argv) | |
474 | { | |
475 | #define p ((struct safe_symbol_file_add_args *)argv) | |
fefd0a37 | 476 | struct so_stuff *so = &solib_start; |
02e423b9 CF |
477 | |
478 | while ((so = so->next)) | |
7470a420 | 479 | if (so->loaded && strcasecmp (so->name, p->name) == 0) |
02e423b9 | 480 | return 0; |
8a892701 CF |
481 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
482 | return !!p->ret; | |
483 | #undef p | |
484 | } | |
485 | ||
450005e7 | 486 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 487 | static void |
7c5c87c0 | 488 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 489 | { |
8e860359 | 490 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 491 | gdb_flush (gdb_stderr); |
7c5c87c0 | 492 | gdb_flush (gdb_stdout); |
d3ff4a77 | 493 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 494 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 495 | gdb_stderr = sp->err; |
9d3789f7 | 496 | gdb_stdout = sp->out; |
8e860359 | 497 | #undef sp |
8a892701 CF |
498 | } |
499 | ||
450005e7 | 500 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
501 | static struct objfile * |
502 | safe_symbol_file_add (char *name, int from_tty, | |
503 | struct section_addr_info *addrs, | |
504 | int mainline, int flags) | |
8a892701 CF |
505 | { |
506 | struct safe_symbol_file_add_args p; | |
507 | struct cleanup *cleanup; | |
508 | ||
7c5c87c0 | 509 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 510 | |
7c5c87c0 CF |
511 | p.err = gdb_stderr; |
512 | p.out = gdb_stdout; | |
450005e7 | 513 | gdb_flush (gdb_stderr); |
7c5c87c0 | 514 | gdb_flush (gdb_stdout); |
d3ff4a77 | 515 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 516 | gdb_stdout = ui_file_new (); |
8a892701 CF |
517 | p.name = name; |
518 | p.from_tty = from_tty; | |
519 | p.addrs = addrs; | |
520 | p.mainline = mainline; | |
521 | p.flags = flags; | |
522 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
523 | ||
524 | do_cleanups (cleanup); | |
525 | return p.ret; | |
526 | } | |
527 | ||
450005e7 CF |
528 | /* Remember the maximum DLL length for printing in info dll command. */ |
529 | int max_dll_name_len; | |
530 | ||
8e860359 CF |
531 | static void |
532 | register_loaded_dll (const char *name, DWORD load_addr) | |
533 | { | |
534 | struct so_stuff *so; | |
7470a420 | 535 | char ppath[MAX_PATH + 1]; |
3f8ad85b CF |
536 | char buf[MAX_PATH + 1]; |
537 | char cwd[MAX_PATH + 1]; | |
538 | char *p; | |
539 | WIN32_FIND_DATA w32_fd; | |
540 | HANDLE h = FindFirstFile(name, &w32_fd); | |
541 | size_t len; | |
542 | ||
543 | FindClose (h); | |
544 | strcpy (buf, name); | |
545 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
546 | { | |
547 | p = strrchr (buf, '\\'); | |
548 | if (p) | |
549 | p[1] = '\0'; | |
550 | SetCurrentDirectory (buf); | |
551 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
552 | SetCurrentDirectory (cwd); | |
553 | } | |
554 | ||
555 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
556 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
557 | so->loaded = 0; | |
8e860359 | 558 | so->load_addr = load_addr; |
d3ff4a77 CF |
559 | so->next = NULL; |
560 | so->objfile = NULL; | |
7470a420 | 561 | strcpy (so->name, ppath); |
8e860359 CF |
562 | |
563 | solib_end->next = so; | |
564 | solib_end = so; | |
3f8ad85b CF |
565 | len = strlen (ppath); |
566 | if (len > max_dll_name_len) | |
567 | max_dll_name_len = len; | |
8e860359 CF |
568 | } |
569 | ||
24e60978 SC |
570 | /* Wait for child to do something. Return pid of child, or -1 in case |
571 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 572 | static int |
554cb486 | 573 | handle_load_dll (void *dummy ATTRIBUTE_UNUSED) |
24e60978 | 574 | { |
3a4b77d8 | 575 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
24e60978 SC |
576 | DWORD dll_name_ptr; |
577 | DWORD done; | |
3cee93ac | 578 | char dll_buf[MAX_PATH + 1]; |
450005e7 | 579 | char *dll_name = NULL; |
450005e7 | 580 | char *p; |
3cee93ac | 581 | |
3a4b77d8 | 582 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 583 | |
1e37c281 | 584 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 585 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 586 | |
1e37c281 | 587 | dll_name = dll_buf; |
24e60978 | 588 | |
3cee93ac CF |
589 | /* Attempt to read the name of the dll that was detected. |
590 | This is documented to work only when actively debugging | |
591 | a program. It will not work for attached processes. */ | |
592 | if (dll_name == NULL || *dll_name == '\0') | |
24e60978 | 593 | { |
29fe111d | 594 | DWORD size = event->fUnicode ? sizeof (WCHAR) : sizeof (char); |
24e60978 SC |
595 | int len = 0; |
596 | char b[2]; | |
3cee93ac CF |
597 | |
598 | ReadProcessMemory (current_process_handle, | |
599 | (LPCVOID) event->lpImageName, | |
600 | (char *) &dll_name_ptr, | |
601 | sizeof (dll_name_ptr), &done); | |
602 | ||
603 | /* See if we could read the address of a string, and that the | |
3bccec63 | 604 | address isn't null. */ |
3cee93ac CF |
605 | |
606 | if (done != sizeof (dll_name_ptr) || !dll_name_ptr) | |
607 | return 1; | |
608 | ||
24e60978 SC |
609 | do |
610 | { | |
3cee93ac CF |
611 | ReadProcessMemory (current_process_handle, |
612 | (LPCVOID) (dll_name_ptr + len * size), | |
24e60978 SC |
613 | &b, |
614 | size, | |
615 | &done); | |
616 | len++; | |
617 | } | |
618 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
619 | ||
24e60978 SC |
620 | dll_name = alloca (len); |
621 | ||
3cee93ac | 622 | if (event->fUnicode) |
24e60978 SC |
623 | { |
624 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
3cee93ac CF |
625 | ReadProcessMemory (current_process_handle, |
626 | (LPCVOID) dll_name_ptr, | |
24e60978 SC |
627 | unicode_dll_name, |
628 | len * sizeof (WCHAR), | |
629 | &done); | |
630 | ||
631 | WideCharToMultiByte (CP_ACP, 0, | |
632 | unicode_dll_name, len, | |
633 | dll_name, len, 0, 0); | |
634 | } | |
635 | else | |
636 | { | |
3cee93ac CF |
637 | ReadProcessMemory (current_process_handle, |
638 | (LPCVOID) dll_name_ptr, | |
24e60978 SC |
639 | dll_name, |
640 | len, | |
641 | &done); | |
642 | } | |
24e60978 | 643 | } |
3cee93ac CF |
644 | |
645 | if (!dll_name) | |
646 | return 1; | |
647 | ||
8e860359 | 648 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
649 | |
650 | return 1; | |
651 | } | |
652 | ||
d3ff4a77 CF |
653 | static int |
654 | handle_unload_dll (void *dummy ATTRIBUTE_UNUSED) | |
655 | { | |
656 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
657 | struct so_stuff *so; | |
658 | ||
659 | for (so = &solib_start; so->next != NULL; so = so->next) | |
660 | if (so->next->load_addr == lpBaseOfDll) | |
661 | { | |
662 | struct so_stuff *sodel = so->next; | |
663 | so->next = sodel->next; | |
664 | if (!so->next) | |
665 | solib_end = so; | |
666 | if (sodel->objfile) | |
667 | free_objfile (sodel->objfile); | |
668 | xfree(sodel); | |
669 | return 1; | |
670 | } | |
671 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
450005e7 CF |
676 | /* Return name of last loaded DLL. */ |
677 | char * | |
9d3789f7 | 678 | child_solib_loaded_library_pathname (int pid ATTRIBUTE_UNUSED) |
450005e7 | 679 | { |
8e860359 | 680 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
681 | } |
682 | ||
683 | /* Clear list of loaded DLLs. */ | |
684 | void | |
685 | child_clear_solibs (void) | |
686 | { | |
687 | struct so_stuff *so, *so1 = solib_start.next; | |
688 | ||
689 | while ((so = so1) != NULL) | |
690 | { | |
691 | so1 = so->next; | |
b8c9b27d | 692 | xfree (so); |
450005e7 CF |
693 | } |
694 | ||
695 | solib_start.next = NULL; | |
d3ff4a77 | 696 | solib_start.objfile = NULL; |
450005e7 CF |
697 | solib_end = &solib_start; |
698 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
699 | } | |
700 | ||
701 | /* Add DLL symbol information. */ | |
d3ff4a77 | 702 | static struct objfile * |
02e423b9 | 703 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 CF |
704 | { |
705 | struct section_addr_info section_addrs; | |
706 | ||
3cee93ac CF |
707 | /* The symbols in a dll are offset by 0x1000, which is the |
708 | the offset from 0 of the first byte in an image - because | |
8a892701 | 709 | of the file header and the section alignment. */ |
3cee93ac | 710 | |
8e860359 | 711 | if (!name || !name[0]) |
d3ff4a77 | 712 | return NULL; |
450005e7 CF |
713 | |
714 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 715 | section_addrs.other[0].name = ".text"; |
8e860359 | 716 | section_addrs.other[0].addr = load_addr; |
d3ff4a77 | 717 | return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED); |
450005e7 CF |
718 | } |
719 | ||
720 | /* Load DLL symbol info. */ | |
721 | void | |
7470a420 | 722 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 723 | { |
8e860359 | 724 | int n; |
450005e7 | 725 | dont_repeat (); |
8e860359 | 726 | |
450005e7 CF |
727 | if (args == NULL) |
728 | error ("dll-symbols requires a file name"); | |
729 | ||
8e860359 CF |
730 | n = strlen (args); |
731 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
732 | { | |
733 | char *newargs = (char *) alloca (n + 4 + 1); | |
734 | strcpy (newargs, args); | |
735 | strcat (newargs, ".dll"); | |
736 | args = newargs; | |
737 | } | |
738 | ||
7470a420 | 739 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 740 | } |
450005e7 CF |
741 | |
742 | /* List currently loaded DLLs. */ | |
743 | void | |
9d3789f7 | 744 | info_dll_command (char *ignore ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
450005e7 CF |
745 | { |
746 | struct so_stuff *so = &solib_start; | |
747 | ||
748 | if (!so->next) | |
749 | return; | |
750 | ||
751 | printf ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); | |
752 | while ((so = so->next) != NULL) | |
7c5c87c0 | 753 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
754 | |
755 | return; | |
24e60978 SC |
756 | } |
757 | ||
3cee93ac CF |
758 | /* Handle DEBUG_STRING output from child process. |
759 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
760 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
761 | static int | |
762 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
763 | { | |
764 | char *s; | |
765 | int gotasig = FALSE; | |
766 | ||
767 | if (!target_read_string | |
3a4b77d8 | 768 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
3cee93ac CF |
769 | || !s || !*s) |
770 | return gotasig; | |
771 | ||
d3a09475 | 772 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
3cee93ac | 773 | { |
d3a09475 | 774 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 775 | warning ("%s", s); |
3cee93ac | 776 | } |
d3a09475 | 777 | else |
3cee93ac CF |
778 | { |
779 | char *p; | |
1e37c281 JM |
780 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
781 | gotasig = target_signal_from_host (sig); | |
0714f9bf SS |
782 | ourstatus->value.sig = gotasig; |
783 | if (gotasig) | |
3cee93ac CF |
784 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
785 | } | |
786 | ||
b8c9b27d | 787 | xfree (s); |
3cee93ac CF |
788 | return gotasig; |
789 | } | |
24e60978 | 790 | |
36339ecd | 791 | static int |
450005e7 | 792 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 793 | { |
3cee93ac | 794 | thread_info *th; |
29fe111d | 795 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 796 | |
29fe111d | 797 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 798 | |
3cee93ac CF |
799 | /* Record the context of the current thread */ |
800 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 801 | |
29fe111d | 802 | switch (code) |
24e60978 | 803 | { |
1ef980b9 | 804 | case EXCEPTION_ACCESS_VIOLATION: |
29fe111d | 805 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n", |
8e860359 | 806 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 | 807 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
8a892701 | 808 | last_sig = SIGSEGV; |
1ef980b9 | 809 | break; |
3b7c8b74 JM |
810 | case STATUS_FLOAT_UNDERFLOW: |
811 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
812 | case STATUS_FLOAT_OVERFLOW: | |
813 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
29fe111d | 814 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 815 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
3b7c8b74 | 816 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
29fe111d | 817 | last_sig = SIGFPE; |
3b7c8b74 | 818 | break; |
1ef980b9 | 819 | case STATUS_STACK_OVERFLOW: |
29fe111d | 820 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 821 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 SC |
822 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
823 | break; | |
824 | case EXCEPTION_BREAKPOINT: | |
29fe111d | 825 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n", |
8e860359 | 826 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 SC |
827 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
828 | break; | |
829 | case DBG_CONTROL_C: | |
29fe111d | 830 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n", |
8e860359 | 831 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 | 832 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
8a892701 | 833 | last_sig = SIGINT; /* FIXME - should check pass state */ |
1ef980b9 SC |
834 | break; |
835 | case EXCEPTION_SINGLE_STEP: | |
29fe111d | 836 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n", |
8e860359 | 837 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 SC |
838 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
839 | break; | |
8227c82d | 840 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
29fe111d | 841 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n", |
8e860359 | 842 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
8227c82d | 843 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
8a892701 | 844 | last_sig = SIGILL; |
8227c82d | 845 | break; |
1ef980b9 | 846 | default: |
02e423b9 CF |
847 | if (current_event.u.Exception.dwFirstChance) |
848 | return 0; | |
29fe111d | 849 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
3a4b77d8 | 850 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 851 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
24e60978 | 852 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 853 | break; |
24e60978 | 854 | } |
24e60978 | 855 | exception_count++; |
36339ecd | 856 | return 1; |
24e60978 SC |
857 | } |
858 | ||
3cee93ac CF |
859 | /* Resume all artificially suspended threads if we are continuing |
860 | execution */ | |
861 | static BOOL | |
8a892701 | 862 | child_continue (DWORD continue_status, int id) |
3cee93ac CF |
863 | { |
864 | int i; | |
865 | thread_info *th; | |
866 | BOOL res; | |
867 | ||
29fe111d | 868 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n", |
3cee93ac | 869 | current_event.dwProcessId, current_event.dwThreadId)); |
0714f9bf SS |
870 | res = ContinueDebugEvent (current_event.dwProcessId, |
871 | current_event.dwThreadId, | |
872 | continue_status); | |
1e37c281 | 873 | continue_status = 0; |
0714f9bf | 874 | if (res) |
3a4b77d8 | 875 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 876 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
3cee93ac CF |
877 | { |
878 | for (i = 0; i < th->suspend_count; i++) | |
879 | (void) ResumeThread (th->h); | |
880 | th->suspend_count = 0; | |
881 | } | |
882 | ||
883 | return res; | |
884 | } | |
885 | ||
8a892701 CF |
886 | /* Get the next event from the child. Return 1 if the event requires |
887 | handling by WFI (or whatever). | |
888 | */ | |
1e37c281 | 889 | static int |
450005e7 | 890 | get_child_debug_event (int pid ATTRIBUTE_UNUSED, struct target_waitstatus *ourstatus) |
1e37c281 JM |
891 | { |
892 | BOOL debug_event; | |
8a892701 CF |
893 | DWORD continue_status, event_code; |
894 | thread_info *th = NULL; | |
895 | static thread_info dummy_thread_info; | |
450005e7 | 896 | int retval = 0; |
1e37c281 | 897 | |
9d3789f7 CF |
898 | last_sig = 0; |
899 | ||
8a892701 | 900 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 901 | goto out; |
1e37c281 JM |
902 | |
903 | event_count++; | |
904 | continue_status = DBG_CONTINUE; | |
1e37c281 | 905 | |
8a892701 | 906 | event_code = current_event.dwDebugEventCode; |
450005e7 | 907 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
908 | |
909 | switch (event_code) | |
1e37c281 JM |
910 | { |
911 | case CREATE_THREAD_DEBUG_EVENT: | |
912 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
913 | (unsigned) current_event.dwProcessId, |
914 | (unsigned) current_event.dwThreadId, | |
915 | "CREATE_THREAD_DEBUG_EVENT")); | |
1e37c281 | 916 | /* Record the existence of this thread */ |
8a892701 CF |
917 | th = child_add_thread (current_event.dwThreadId, |
918 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
919 | if (info_verbose) |
920 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
921 | target_pid_to_str ( |
922 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 923 | retval = current_event.dwThreadId; |
1e37c281 JM |
924 | break; |
925 | ||
926 | case EXIT_THREAD_DEBUG_EVENT: | |
927 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
928 | (unsigned) current_event.dwProcessId, |
929 | (unsigned) current_event.dwThreadId, | |
930 | "EXIT_THREAD_DEBUG_EVENT")); | |
1e37c281 | 931 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 932 | th = &dummy_thread_info; |
1e37c281 JM |
933 | break; |
934 | ||
935 | case CREATE_PROCESS_DEBUG_EVENT: | |
936 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
937 | (unsigned) current_event.dwProcessId, |
938 | (unsigned) current_event.dwThreadId, | |
939 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 940 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
1e37c281 JM |
941 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
942 | ||
9d3789f7 | 943 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 944 | /* Add the main thread */ |
9d3789f7 | 945 | #if 0 |
450005e7 CF |
946 | th = child_add_thread (current_event.dwProcessId, |
947 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
948 | #endif |
949 | th = child_add_thread (main_thread_id, | |
8a892701 | 950 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 951 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
1e37c281 JM |
952 | break; |
953 | ||
954 | case EXIT_PROCESS_DEBUG_EVENT: | |
955 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
956 | (unsigned) current_event.dwProcessId, |
957 | (unsigned) current_event.dwThreadId, | |
958 | "EXIT_PROCESS_DEBUG_EVENT")); | |
1e37c281 JM |
959 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
960 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
961 | CloseHandle (current_process_handle); | |
9d3789f7 | 962 | retval = main_thread_id; |
8a892701 | 963 | break; |
1e37c281 JM |
964 | |
965 | case LOAD_DLL_DEBUG_EVENT: | |
966 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
967 | (unsigned) current_event.dwProcessId, |
968 | (unsigned) current_event.dwThreadId, | |
969 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 970 | CloseHandle (current_event.u.LoadDll.hFile); |
8a892701 | 971 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
1e37c281 | 972 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
973 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
974 | ourstatus->value.integer = 0; | |
9d3789f7 | 975 | retval = main_thread_id; |
1e37c281 JM |
976 | break; |
977 | ||
978 | case UNLOAD_DLL_DEBUG_EVENT: | |
979 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
980 | (unsigned) current_event.dwProcessId, |
981 | (unsigned) current_event.dwThreadId, | |
982 | "UNLOAD_DLL_DEBUG_EVENT")); | |
d3ff4a77 CF |
983 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
984 | registers_changed (); /* mark all regs invalid */ | |
985 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
3bccec63 | 986 | does not exist yet. */ |
d3ff4a77 | 987 | break; |
1e37c281 JM |
988 | |
989 | case EXCEPTION_DEBUG_EVENT: | |
990 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
991 | (unsigned) current_event.dwProcessId, |
992 | (unsigned) current_event.dwThreadId, | |
993 | "EXCEPTION_DEBUG_EVENT")); | |
02e423b9 CF |
994 | if (handle_exception (ourstatus)) |
995 | retval = current_event.dwThreadId; | |
1e37c281 JM |
996 | break; |
997 | ||
8a892701 | 998 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1e37c281 | 999 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1000 | (unsigned) current_event.dwProcessId, |
1001 | (unsigned) current_event.dwThreadId, | |
1002 | "OUTPUT_DEBUG_STRING_EVENT")); | |
8e860359 | 1003 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 1004 | retval = main_thread_id; |
1e37c281 | 1005 | break; |
9d3789f7 | 1006 | |
1e37c281 | 1007 | default: |
29fe111d CF |
1008 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1009 | (DWORD) current_event.dwProcessId, | |
1010 | (DWORD) current_event.dwThreadId); | |
1011 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
1012 | current_event.dwDebugEventCode); |
1013 | break; | |
1014 | } | |
1015 | ||
450005e7 | 1016 | if (!retval) |
8a892701 | 1017 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 1018 | else |
9d3789f7 | 1019 | { |
8e860359 | 1020 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1021 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1022 | } |
1e37c281 JM |
1023 | |
1024 | out: | |
450005e7 | 1025 | return retval; |
1e37c281 JM |
1026 | } |
1027 | ||
1e37c281 | 1028 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1029 | static ptid_t |
1030 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
24e60978 | 1031 | { |
39f77062 KB |
1032 | int pid = PIDGET (ptid); |
1033 | ||
24e60978 SC |
1034 | /* We loop when we get a non-standard exception rather than return |
1035 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1036 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
1037 | the birth or death of threads, which mean that the current thread |
1038 | isn't necessarily what you think it is. */ | |
1039 | ||
1040 | while (1) | |
450005e7 CF |
1041 | { |
1042 | int retval = get_child_debug_event (pid, ourstatus); | |
1043 | if (retval) | |
39f77062 | 1044 | return pid_to_ptid (retval); |
450005e7 CF |
1045 | else |
1046 | { | |
1047 | int detach = 0; | |
3cee93ac | 1048 | |
450005e7 CF |
1049 | if (ui_loop_hook != NULL) |
1050 | detach = ui_loop_hook (0); | |
0714f9bf | 1051 | |
450005e7 CF |
1052 | if (detach) |
1053 | child_kill_inferior (); | |
1054 | } | |
1055 | } | |
24e60978 SC |
1056 | } |
1057 | ||
9d3789f7 CF |
1058 | static void |
1059 | do_initial_child_stuff (DWORD pid) | |
1060 | { | |
1061 | extern int stop_after_trap; | |
1062 | ||
1063 | last_sig = 0; | |
1064 | event_count = 0; | |
1065 | exception_count = 0; | |
1066 | current_event.dwProcessId = pid; | |
1067 | memset (¤t_event, 0, sizeof (current_event)); | |
1068 | push_target (&child_ops); | |
1069 | child_init_thread_list (); | |
1070 | child_clear_solibs (); | |
1071 | clear_proceed_status (); | |
1072 | init_wait_for_inferior (); | |
1073 | ||
1074 | target_terminal_init (); | |
1075 | target_terminal_inferior (); | |
1076 | ||
1077 | while (1) | |
1078 | { | |
1079 | stop_after_trap = 1; | |
1080 | wait_for_inferior (); | |
1081 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1082 | resume (0, stop_signal); | |
1083 | else | |
1084 | break; | |
1085 | } | |
1086 | stop_after_trap = 0; | |
1087 | return; | |
1088 | } | |
1089 | ||
02cc9f49 CV |
1090 | /* Since Windows XP, detaching from a process is supported by Windows. |
1091 | The following code tries loading the appropriate functions dynamically. | |
1092 | If loading these functions succeeds use them to actually detach from | |
1093 | the inferior process, otherwise behave as usual, pretending that | |
1094 | detach has worked. */ | |
1095 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1096 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1097 | ||
1098 | static int | |
1099 | has_detach_ability () | |
1100 | { | |
1101 | static HMODULE kernel32 = NULL; | |
1102 | ||
1103 | if (!kernel32) | |
1104 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1105 | if (kernel32) | |
1106 | { | |
1107 | if (!DebugSetProcessKillOnExit) | |
1108 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1109 | "DebugSetProcessKillOnExit"); | |
1110 | if (!DebugActiveProcessStop) | |
1111 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1112 | "DebugActiveProcessStop"); | |
1113 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1114 | return 1; | |
1115 | } | |
1116 | return 0; | |
1117 | } | |
24e60978 | 1118 | |
02cc9f49 | 1119 | /* Attach to process PID, then initialize for debugging it. */ |
24e60978 | 1120 | static void |
fba45db2 | 1121 | child_attach (char *args, int from_tty) |
24e60978 SC |
1122 | { |
1123 | BOOL ok; | |
559e75c0 | 1124 | DWORD pid; |
24e60978 SC |
1125 | |
1126 | if (!args) | |
1127 | error_no_arg ("process-id to attach"); | |
1128 | ||
559e75c0 | 1129 | pid = strtoul (args, 0, 0); |
9d3789f7 | 1130 | ok = DebugActiveProcess (pid); |
24e60978 SC |
1131 | |
1132 | if (!ok) | |
1133 | error ("Can't attach to process."); | |
1134 | ||
02cc9f49 CV |
1135 | if (has_detach_ability ()) |
1136 | { | |
1137 | attach_flag = 1; | |
1138 | DebugSetProcessKillOnExit (FALSE); | |
1139 | } | |
1140 | ||
24e60978 SC |
1141 | if (from_tty) |
1142 | { | |
1143 | char *exec_file = (char *) get_exec_file (0); | |
1144 | ||
1145 | if (exec_file) | |
1146 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1147 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1148 | else |
1149 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1150 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1151 | |
1152 | gdb_flush (gdb_stdout); | |
1153 | } | |
1154 | ||
9d3789f7 CF |
1155 | do_initial_child_stuff (pid); |
1156 | target_terminal_ours (); | |
24e60978 SC |
1157 | } |
1158 | ||
24e60978 | 1159 | static void |
29fe111d | 1160 | child_detach (char *args ATTRIBUTE_UNUSED, int from_tty) |
24e60978 | 1161 | { |
02cc9f49 CV |
1162 | int detached = 1; |
1163 | ||
1164 | if (has_detach_ability ()) | |
1165 | { | |
1166 | delete_command (NULL, 0); | |
1167 | child_continue (DBG_CONTINUE, -1); | |
1168 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
3bccec63 | 1169 | { |
02cc9f49 CV |
1170 | error ("Can't detach process %lu (error %lu)", |
1171 | current_event.dwProcessId, GetLastError ()); | |
1172 | detached = 0; | |
3bccec63 | 1173 | } |
02cc9f49 CV |
1174 | DebugSetProcessKillOnExit (FALSE); |
1175 | } | |
1176 | if (detached && from_tty) | |
24e60978 SC |
1177 | { |
1178 | char *exec_file = get_exec_file (0); | |
1179 | if (exec_file == 0) | |
1180 | exec_file = ""; | |
02cc9f49 CV |
1181 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1182 | current_event.dwProcessId); | |
24e60978 SC |
1183 | gdb_flush (gdb_stdout); |
1184 | } | |
39f77062 | 1185 | inferior_ptid = null_ptid; |
24e60978 SC |
1186 | unpush_target (&child_ops); |
1187 | } | |
1188 | ||
24e60978 SC |
1189 | /* Print status information about what we're accessing. */ |
1190 | ||
1191 | static void | |
29fe111d | 1192 | child_files_info (struct target_ops *ignore ATTRIBUTE_UNUSED) |
24e60978 SC |
1193 | { |
1194 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1195 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
24e60978 SC |
1196 | } |
1197 | ||
1198 | /* ARGSUSED */ | |
1199 | static void | |
29fe111d | 1200 | child_open (char *arg ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
24e60978 SC |
1201 | { |
1202 | error ("Use the \"run\" command to start a Unix child process."); | |
1203 | } | |
1204 | ||
39f77062 | 1205 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
24e60978 SC |
1206 | EXEC_FILE is the file to run. |
1207 | ALLARGS is a string containing the arguments to the program. | |
1208 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1209 | ||
24e60978 | 1210 | static void |
fba45db2 | 1211 | child_create_inferior (char *exec_file, char *allargs, char **env) |
24e60978 | 1212 | { |
1750a5ef SC |
1213 | char real_path[MAXPATHLEN]; |
1214 | char *winenv; | |
1215 | char *temp; | |
3a4b77d8 | 1216 | int envlen; |
1750a5ef | 1217 | int i; |
24e60978 SC |
1218 | STARTUPINFO si; |
1219 | PROCESS_INFORMATION pi; | |
24e60978 SC |
1220 | BOOL ret; |
1221 | DWORD flags; | |
eb708f2e | 1222 | char *args; |
24e60978 SC |
1223 | |
1224 | if (!exec_file) | |
450005e7 | 1225 | error ("No executable specified, use `target exec'.\n"); |
24e60978 SC |
1226 | |
1227 | memset (&si, 0, sizeof (si)); | |
1228 | si.cb = sizeof (si); | |
1229 | ||
29fe111d | 1230 | cygwin_conv_to_win32_path (exec_file, real_path); |
24e60978 | 1231 | |
3cee93ac | 1232 | flags = DEBUG_ONLY_THIS_PROCESS; |
24e60978 SC |
1233 | |
1234 | if (new_group) | |
1235 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1236 | ||
1237 | if (new_console) | |
1238 | flags |= CREATE_NEW_CONSOLE; | |
1239 | ||
3d78f532 SC |
1240 | args = alloca (strlen (real_path) + strlen (allargs) + 2); |
1241 | ||
1242 | strcpy (args, real_path); | |
eb708f2e | 1243 | |
eb708f2e SC |
1244 | strcat (args, " "); |
1245 | strcat (args, allargs); | |
1246 | ||
e88c49c3 DE |
1247 | /* Prepare the environment vars for CreateProcess. */ |
1248 | { | |
1249 | /* This code use to assume all env vars were file names and would | |
1250 | translate them all to win32 style. That obviously doesn't work in the | |
2dcfc9c7 DE |
1251 | general case. The current rule is that we only translate PATH. |
1252 | We need to handle PATH because we're about to call CreateProcess and | |
1253 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1254 | in both posix and win32 environments. cygwin.dll will change it back | |
1255 | to posix style if necessary. */ | |
e88c49c3 DE |
1256 | |
1257 | static const char *conv_path_names[] = | |
3a4b77d8 JM |
1258 | { |
1259 | "PATH=", | |
1260 | 0 | |
1261 | }; | |
e88c49c3 DE |
1262 | |
1263 | /* CreateProcess takes the environment list as a null terminated set of | |
1264 | strings (i.e. two nulls terminate the list). */ | |
1265 | ||
1266 | /* Get total size for env strings. */ | |
1267 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1268 | { | |
2dcfc9c7 | 1269 | int j, len; |
e88c49c3 | 1270 | |
2dcfc9c7 DE |
1271 | for (j = 0; conv_path_names[j]; j++) |
1272 | { | |
1273 | len = strlen (conv_path_names[j]); | |
1274 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1275 | { |
29fe111d | 1276 | if (cygwin_posix_path_list_p (env[i] + len)) |
2dcfc9c7 | 1277 | envlen += len |
29fe111d | 1278 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
2dcfc9c7 DE |
1279 | else |
1280 | envlen += strlen (env[i]) + 1; | |
1281 | break; | |
e88c49c3 | 1282 | } |
e88c49c3 | 1283 | } |
2dcfc9c7 | 1284 | if (conv_path_names[j] == NULL) |
e88c49c3 DE |
1285 | envlen += strlen (env[i]) + 1; |
1286 | } | |
1287 | ||
1288 | winenv = alloca (envlen + 1); | |
1289 | ||
1290 | /* Copy env strings into new buffer. */ | |
3cee93ac | 1291 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) |
e88c49c3 | 1292 | { |
2dcfc9c7 | 1293 | int j, len; |
e88c49c3 | 1294 | |
2dcfc9c7 DE |
1295 | for (j = 0; conv_path_names[j]; j++) |
1296 | { | |
1297 | len = strlen (conv_path_names[j]); | |
1298 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1299 | { |
29fe111d | 1300 | if (cygwin_posix_path_list_p (env[i] + len)) |
e88c49c3 DE |
1301 | { |
1302 | memcpy (temp, env[i], len); | |
29fe111d | 1303 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
e88c49c3 | 1304 | } |
2dcfc9c7 DE |
1305 | else |
1306 | strcpy (temp, env[i]); | |
1307 | break; | |
e88c49c3 | 1308 | } |
e88c49c3 | 1309 | } |
2dcfc9c7 | 1310 | if (conv_path_names[j] == NULL) |
e88c49c3 | 1311 | strcpy (temp, env[i]); |
2dcfc9c7 | 1312 | |
e88c49c3 DE |
1313 | temp += strlen (temp) + 1; |
1314 | } | |
1315 | ||
1316 | /* Final nil string to terminate new env. */ | |
1317 | *temp = 0; | |
1318 | } | |
1750a5ef | 1319 | |
1750a5ef | 1320 | ret = CreateProcess (0, |
3a4b77d8 | 1321 | args, /* command line */ |
24e60978 SC |
1322 | NULL, /* Security */ |
1323 | NULL, /* thread */ | |
1324 | TRUE, /* inherit handles */ | |
1325 | flags, /* start flags */ | |
1750a5ef | 1326 | winenv, |
24e60978 SC |
1327 | NULL, /* current directory */ |
1328 | &si, | |
1329 | &pi); | |
1330 | if (!ret) | |
3a4b77d8 | 1331 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
24e60978 | 1332 | |
700b351b CF |
1333 | CloseHandle (pi.hThread); |
1334 | CloseHandle (pi.hProcess); | |
9d3789f7 | 1335 | do_initial_child_stuff (pi.dwProcessId); |
d3a09475 | 1336 | |
8e860359 | 1337 | /* child_continue (DBG_CONTINUE, -1); */ |
1e37c281 | 1338 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
24e60978 SC |
1339 | } |
1340 | ||
1341 | static void | |
fba45db2 | 1342 | child_mourn_inferior (void) |
24e60978 | 1343 | { |
8a892701 | 1344 | (void) child_continue (DBG_CONTINUE, -1); |
24e60978 SC |
1345 | unpush_target (&child_ops); |
1346 | generic_mourn_inferior (); | |
1347 | } | |
1348 | ||
24e60978 SC |
1349 | /* Send a SIGINT to the process group. This acts just like the user typed a |
1350 | ^C on the controlling terminal. */ | |
1351 | ||
b607efe7 | 1352 | static void |
fba45db2 | 1353 | child_stop (void) |
24e60978 | 1354 | { |
1ef980b9 | 1355 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 1356 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 1357 | registers_changed (); /* refresh register state */ |
24e60978 SC |
1358 | } |
1359 | ||
1360 | int | |
eb708f2e | 1361 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, |
56c40d46 | 1362 | int write, struct mem_attrib *mem ATTRIBUTE_UNUSED, |
aea02b6b | 1363 | struct target_ops *target ATTRIBUTE_UNUSED) |
24e60978 SC |
1364 | { |
1365 | DWORD done; | |
1366 | if (write) | |
1367 | { | |
29fe111d CF |
1368 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1369 | len, (DWORD) memaddr)); | |
3cee93ac CF |
1370 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1371 | len, &done); | |
1372 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
24e60978 SC |
1373 | } |
1374 | else | |
1375 | { | |
29fe111d CF |
1376 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1377 | len, (DWORD) memaddr)); | |
3cee93ac CF |
1378 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1379 | &done); | |
24e60978 SC |
1380 | } |
1381 | return done; | |
1382 | } | |
1383 | ||
1384 | void | |
1385 | child_kill_inferior (void) | |
1386 | { | |
3cee93ac CF |
1387 | CHECK (TerminateProcess (current_process_handle, 0)); |
1388 | ||
b5edcb45 ILT |
1389 | for (;;) |
1390 | { | |
8a892701 | 1391 | if (!child_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 1392 | break; |
3cee93ac | 1393 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 1394 | break; |
3cee93ac | 1395 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
1396 | break; |
1397 | } | |
1398 | ||
3cee93ac CF |
1399 | CHECK (CloseHandle (current_process_handle)); |
1400 | ||
1401 | /* this may fail in an attached process so don't check. */ | |
1402 | (void) CloseHandle (current_thread->h); | |
3a4b77d8 | 1403 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
24e60978 SC |
1404 | } |
1405 | ||
1406 | void | |
39f77062 | 1407 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
24e60978 | 1408 | { |
3cee93ac | 1409 | thread_info *th; |
8a892701 | 1410 | DWORD continue_status = last_sig > 0 && last_sig < NSIG ? |
8e860359 | 1411 | DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE; |
39f77062 | 1412 | int pid = PIDGET (ptid); |
8a892701 CF |
1413 | |
1414 | last_sig = 0; | |
24e60978 | 1415 | |
3cee93ac CF |
1416 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", |
1417 | pid, step, sig)); | |
1418 | ||
1419 | /* Get context for currently selected thread */ | |
1420 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1421 | if (th) |
24e60978 | 1422 | { |
450005e7 CF |
1423 | if (step) |
1424 | { | |
1425 | /* Single step by setting t bit */ | |
1426 | child_fetch_inferior_registers (PS_REGNUM); | |
1427 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1428 | } | |
24e60978 | 1429 | |
450005e7 CF |
1430 | if (th->context.ContextFlags) |
1431 | { | |
1432 | CHECK (SetThreadContext (th->h, &th->context)); | |
1433 | th->context.ContextFlags = 0; | |
1434 | } | |
24e60978 SC |
1435 | } |
1436 | ||
3cee93ac CF |
1437 | /* Allow continuing with the same signal that interrupted us. |
1438 | Otherwise complain. */ | |
24e60978 | 1439 | |
8a892701 | 1440 | child_continue (continue_status, pid); |
24e60978 SC |
1441 | } |
1442 | ||
1443 | static void | |
fba45db2 | 1444 | child_prepare_to_store (void) |
24e60978 SC |
1445 | { |
1446 | /* Do nothing, since we can store individual regs */ | |
1447 | } | |
1448 | ||
1449 | static int | |
fba45db2 | 1450 | child_can_run (void) |
24e60978 SC |
1451 | { |
1452 | return 1; | |
1453 | } | |
1454 | ||
1455 | static void | |
9d3789f7 | 1456 | child_close (int x ATTRIBUTE_UNUSED) |
24e60978 | 1457 | { |
39f77062 | 1458 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
3bccec63 | 1459 | PIDGET (inferior_ptid))); |
24e60978 | 1460 | } |
1ef980b9 | 1461 | |
3a4b77d8 | 1462 | struct target_ops child_ops; |
c719b714 | 1463 | |
3a4b77d8 JM |
1464 | static void |
1465 | init_child_ops (void) | |
24e60978 | 1466 | { |
3a4b77d8 JM |
1467 | child_ops.to_shortname = "child"; |
1468 | child_ops.to_longname = "Win32 child process"; | |
1469 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1470 | child_ops.to_open = child_open; | |
1471 | child_ops.to_close = child_close; | |
1472 | child_ops.to_attach = child_attach; | |
1473 | child_ops.to_detach = child_detach; | |
1474 | child_ops.to_resume = child_resume; | |
1475 | child_ops.to_wait = child_wait; | |
1476 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1477 | child_ops.to_store_registers = child_store_inferior_registers; | |
1478 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1479 | child_ops.to_xfer_memory = child_xfer_memory; | |
1480 | child_ops.to_files_info = child_files_info; | |
1481 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1482 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1483 | child_ops.to_terminal_init = terminal_init_inferior; | |
1484 | child_ops.to_terminal_inferior = terminal_inferior; | |
1485 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1486 | child_ops.to_terminal_ours = terminal_ours; | |
1487 | child_ops.to_terminal_info = child_terminal_info; | |
1488 | child_ops.to_kill = child_kill_inferior; | |
1489 | child_ops.to_load = 0; | |
1490 | child_ops.to_lookup_symbol = 0; | |
1491 | child_ops.to_create_inferior = child_create_inferior; | |
1492 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1493 | child_ops.to_can_run = child_can_run; | |
1494 | child_ops.to_notice_signals = 0; | |
1495 | child_ops.to_thread_alive = win32_child_thread_alive; | |
d3a09475 | 1496 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
3a4b77d8 JM |
1497 | child_ops.to_stop = child_stop; |
1498 | child_ops.to_stratum = process_stratum; | |
1499 | child_ops.DONT_USE = 0; | |
1500 | child_ops.to_has_all_memory = 1; | |
1501 | child_ops.to_has_memory = 1; | |
1502 | child_ops.to_has_stack = 1; | |
1503 | child_ops.to_has_registers = 1; | |
1504 | child_ops.to_has_execution = 1; | |
1505 | child_ops.to_sections = 0; | |
1506 | child_ops.to_sections_end = 0; | |
1507 | child_ops.to_magic = OPS_MAGIC; | |
c719b714 | 1508 | } |
24e60978 SC |
1509 | |
1510 | void | |
fba45db2 | 1511 | _initialize_inftarg (void) |
24e60978 | 1512 | { |
fa58ee11 EZ |
1513 | struct cmd_list_element *c; |
1514 | ||
3a4b77d8 | 1515 | init_child_ops (); |
1ef980b9 | 1516 | |
fa58ee11 EZ |
1517 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1518 | "Load dll library symbols from FILE."); | |
1519 | c->completer = filename_completer; | |
450005e7 CF |
1520 | |
1521 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
1522 | ||
1523 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, | |
8e860359 CF |
1524 | (char *) &new_console, |
1525 | "Set creation of new console when creating child process.", | |
1526 | &setlist), | |
1527 | &showlist); | |
24e60978 | 1528 | |
450005e7 | 1529 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1530 | (char *) &new_group, |
1531 | "Set creation of new group when creating child process.", | |
1532 | &setlist), | |
1533 | &showlist); | |
24e60978 | 1534 | |
450005e7 | 1535 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1536 | (char *) &debug_exec, |
1537 | "Set whether to display execution in child process.", | |
1538 | &setlist), | |
1539 | &showlist); | |
1ef980b9 | 1540 | |
450005e7 | 1541 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1542 | (char *) &debug_events, |
1543 | "Set whether to display kernel events in child process.", | |
1544 | &setlist), | |
1545 | &showlist); | |
1ef980b9 | 1546 | |
450005e7 | 1547 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1548 | (char *) &debug_memory, |
1549 | "Set whether to display memory accesses in child process.", | |
1550 | &setlist), | |
1551 | &showlist); | |
1ef980b9 | 1552 | |
450005e7 | 1553 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1554 | (char *) &debug_exceptions, |
1555 | "Set whether to display kernel exceptions in child process.", | |
1556 | &setlist), | |
1557 | &showlist); | |
1ef980b9 | 1558 | |
450005e7 CF |
1559 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1560 | add_info_alias ("sharedlibrary", "dll", 1); | |
1561 | ||
24e60978 SC |
1562 | add_target (&child_ops); |
1563 | } | |
3cee93ac CF |
1564 | |
1565 | /* Determine if the thread referenced by "pid" is alive | |
1566 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1567 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1568 | static int | |
39f77062 | 1569 | win32_child_thread_alive (ptid_t ptid) |
3cee93ac | 1570 | { |
39f77062 KB |
1571 | int pid = PIDGET (ptid); |
1572 | ||
3a4b77d8 JM |
1573 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1574 | FALSE : TRUE; | |
3cee93ac CF |
1575 | } |
1576 | ||
1577 | /* Convert pid to printable format. */ | |
1578 | char * | |
39f77062 | 1579 | cygwin_pid_to_str (ptid_t ptid) |
3cee93ac CF |
1580 | { |
1581 | static char buf[80]; | |
39f77062 KB |
1582 | int pid = PIDGET (ptid); |
1583 | ||
29fe111d | 1584 | if ((DWORD) pid == current_event.dwProcessId) |
3cee93ac CF |
1585 | sprintf (buf, "process %d", pid); |
1586 | else | |
29fe111d | 1587 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
3cee93ac CF |
1588 | return buf; |
1589 | } | |
8e860359 CF |
1590 | |
1591 | static int | |
1592 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1593 | { | |
1594 | struct objfile *objfile; | |
1595 | char *objfile_basename; | |
1596 | const char *dll_basename; | |
1597 | ||
1598 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1599 | dll_basename = dll_name; | |
1600 | else | |
1601 | dll_basename++; | |
1602 | ||
1603 | ALL_OBJFILES (objfile) | |
1604 | { | |
1605 | objfile_basename = strrchr (objfile->name, '/'); | |
1606 | ||
1607 | if (objfile_basename && | |
1608 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1609 | { | |
1610 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1611 | base_addr, dll_name); | |
1612 | goto out; | |
1613 | } | |
1614 | } | |
1615 | ||
1616 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 1617 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
1618 | |
1619 | out: | |
1620 | return 1; | |
1621 | } | |
1622 | ||
1623 | typedef struct | |
1624 | { | |
1625 | struct target_ops *target; | |
1626 | bfd_vma addr; | |
1627 | } | |
1628 | map_code_section_args; | |
1629 | ||
1630 | static void | |
554cb486 | 1631 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1632 | { |
1633 | int old; | |
1634 | int update_coreops; | |
1635 | struct section_table *new_target_sect_ptr; | |
1636 | ||
1637 | map_code_section_args *args = (map_code_section_args *) obj; | |
1638 | struct target_ops *target = args->target; | |
1639 | if (sect->flags & SEC_CODE) | |
1640 | { | |
1641 | update_coreops = core_ops.to_sections == target->to_sections; | |
1642 | ||
1643 | if (target->to_sections) | |
1644 | { | |
1645 | old = target->to_sections_end - target->to_sections; | |
1646 | target->to_sections = (struct section_table *) | |
1647 | xrealloc ((char *) target->to_sections, | |
1648 | (sizeof (struct section_table)) * (1 + old)); | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | old = 0; | |
1653 | target->to_sections = (struct section_table *) | |
1654 | xmalloc ((sizeof (struct section_table))); | |
1655 | } | |
1656 | target->to_sections_end = target->to_sections + (1 + old); | |
1657 | ||
1658 | /* Update the to_sections field in the core_ops structure | |
3bccec63 | 1659 | if needed. */ |
8e860359 CF |
1660 | if (update_coreops) |
1661 | { | |
1662 | core_ops.to_sections = target->to_sections; | |
1663 | core_ops.to_sections_end = target->to_sections_end; | |
1664 | } | |
1665 | new_target_sect_ptr = target->to_sections + old; | |
1666 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
1667 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
1668 | bfd_section_size (abfd, sect);; | |
1669 | new_target_sect_ptr->the_bfd_section = sect; | |
1670 | new_target_sect_ptr->bfd = abfd; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | static int | |
1675 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
1676 | { | |
1677 | bfd *dll_bfd; | |
1678 | map_code_section_args map_args; | |
1679 | asection *lowest_sect; | |
1680 | char *name; | |
1681 | if (dll_name == NULL || target == NULL) | |
1682 | return 0; | |
66ed1d85 | 1683 | name = xstrdup (dll_name); |
8e860359 CF |
1684 | dll_bfd = bfd_openr (name, "pei-i386"); |
1685 | if (dll_bfd == NULL) | |
1686 | return 0; | |
1687 | ||
1688 | if (bfd_check_format (dll_bfd, bfd_object)) | |
1689 | { | |
1690 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
1691 | if (lowest_sect == NULL) | |
1692 | return 0; | |
1693 | map_args.target = target; | |
1694 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
1695 | ||
554cb486 | 1696 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
1697 | } |
1698 | ||
1699 | return 1; | |
1700 | } | |
1701 | ||
1702 | static void | |
554cb486 | 1703 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1704 | { |
1705 | struct target_ops *target = (struct target_ops *) obj; | |
1706 | ||
1707 | DWORD base_addr; | |
1708 | ||
1709 | int dll_name_size; | |
1710 | char *dll_name = NULL; | |
1711 | char *buf = NULL; | |
1712 | struct win32_pstatus *pstatus; | |
1713 | char *p; | |
1714 | ||
1715 | if (strncmp (sect->name, ".module", 7)) | |
1716 | return; | |
1717 | ||
1718 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
1719 | if (!buf) | |
1720 | { | |
1721 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1722 | goto out; | |
1723 | } | |
1724 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
1725 | goto out; | |
1726 | ||
1727 | pstatus = (struct win32_pstatus *) buf; | |
1728 | ||
1729 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
1730 | dll_name_size = pstatus->data.module_info.module_name_size; | |
1731 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
1732 | goto out; | |
1733 | ||
1734 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
1735 | if (!dll_name) | |
1736 | { | |
1737 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1738 | goto out; | |
1739 | } | |
1740 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
1741 | ||
1742 | while ((p = strchr (dll_name, '\\'))) | |
1743 | *p = '/'; | |
1744 | ||
1745 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
1746 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
1747 | ||
1748 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
1749 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
1750 | ||
1751 | out: | |
1752 | if (buf) | |
b8c9b27d | 1753 | xfree (buf); |
8e860359 | 1754 | if (dll_name) |
b8c9b27d | 1755 | xfree (dll_name); |
8e860359 CF |
1756 | return; |
1757 | } | |
1758 | ||
1759 | void | |
990f9fe3 | 1760 | child_solib_add (char *filename ATTRIBUTE_UNUSED, int from_tty, struct target_ops *target, int readsyms) |
8e860359 | 1761 | { |
990f9fe3 FF |
1762 | if (!readsyms) |
1763 | return; | |
8e860359 CF |
1764 | if (core_bfd) |
1765 | { | |
1766 | child_clear_solibs (); | |
1767 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
1768 | } | |
1769 | else | |
1770 | { | |
1771 | if (solib_end && solib_end->name) | |
d3ff4a77 | 1772 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
3bccec63 | 1773 | solib_end->load_addr); |
8e860359 CF |
1774 | } |
1775 | } | |
1776 | ||
1777 | static void | |
1778 | fetch_elf_core_registers (char *core_reg_sect, | |
1779 | unsigned core_reg_size, | |
1780 | int which, | |
1781 | CORE_ADDR reg_addr) | |
1782 | { | |
1783 | int r; | |
1784 | if (core_reg_size < sizeof (CONTEXT)) | |
1785 | { | |
1786 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
1787 | return; | |
1788 | } | |
1789 | for (r = 0; r < NUM_REGS; r++) | |
1790 | supply_register (r, core_reg_sect + mappings[r]); | |
1791 | } | |
1792 | ||
1793 | static struct core_fns win32_elf_core_fns = | |
1794 | { | |
1795 | bfd_target_elf_flavour, | |
1796 | default_check_format, | |
1797 | default_core_sniffer, | |
1798 | fetch_elf_core_registers, | |
1799 | NULL | |
1800 | }; | |
1801 | ||
1802 | void | |
0613c401 | 1803 | _initialize_core_win32 (void) |
8e860359 CF |
1804 | { |
1805 | add_core_fns (&win32_elf_core_fns); | |
1806 | } | |
2a3d5645 CF |
1807 | |
1808 | void | |
1809 | _initialize_check_for_gdb_ini (void) | |
1810 | { | |
1811 | char *homedir; | |
1812 | if (inhibit_gdbinit) | |
1813 | return; | |
1814 | ||
1815 | homedir = getenv ("HOME"); | |
1816 | if (homedir) | |
1817 | { | |
1818 | char *p; | |
1819 | char *oldini = (char *) alloca (strlen (homedir) + | |
1820 | sizeof ("/gdb.ini")); | |
1821 | strcpy (oldini, homedir); | |
1822 | p = strchr (oldini, '\0'); | |
1823 | if (p > oldini && p[-1] != '/') | |
1824 | *p++ = '/'; | |
1825 | strcpy (p, "gdb.ini"); | |
1826 | if (access (oldini, 0) == 0) | |
1827 | { | |
1828 | int len = strlen (oldini); | |
1829 | char *newini = alloca (len + 1); | |
1830 | sprintf (newini, "%.*s.gdbinit", len - (sizeof ("gdb.ini") - 1), oldini); | |
1831 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); | |
1832 | } | |
1833 | } | |
1834 | } |