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c906108c | 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. |
c906108c SS |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without 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 | |
c5aa993b | 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
4e052eda | 21 | Boston, MA 02111-1307, USA. */ |
c906108c SS |
22 | |
23 | /* by Steve Chamberlain, sac@cygnus.com */ | |
24 | ||
25 | /* We assume we're being built with and will be used for cygwin. */ | |
26 | ||
27 | #include "defs.h" | |
28 | #include "frame.h" /* required by inferior.h */ | |
29 | #include "inferior.h" | |
30 | #include "target.h" | |
c906108c SS |
31 | #include "gdbcore.h" |
32 | #include "command.h" | |
fa58ee11 | 33 | #include "completer.h" |
4e052eda | 34 | #include "regcache.h" |
2a3d5645 | 35 | #include "top.h" |
c906108c SS |
36 | #include <signal.h> |
37 | #include <sys/types.h> | |
38 | #include <fcntl.h> | |
39 | #include <stdlib.h> | |
c906108c | 40 | #include <windows.h> |
c2d11a7d | 41 | #include <imagehlp.h> |
29fe111d | 42 | #include <sys/cygwin.h> |
c906108c SS |
43 | |
44 | #include "buildsym.h" | |
45 | #include "symfile.h" | |
46 | #include "objfiles.h" | |
47 | #include "gdb_string.h" | |
48 | #include "gdbthread.h" | |
49 | #include "gdbcmd.h" | |
50 | #include <sys/param.h> | |
c2d11a7d | 51 | #include <unistd.h> |
c906108c | 52 | |
7a292a7a | 53 | /* The ui's event loop. */ |
507f3c78 | 54 | extern int (*ui_loop_hook) (int signo); |
7a292a7a SS |
55 | |
56 | /* If we're not using the old Cygwin header file set, define the | |
57 | following which never should have been in the generic Win32 API | |
58 | headers in the first place since they were our own invention... */ | |
59 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 60 | enum |
8e860359 CF |
61 | { |
62 | FLAG_TRACE_BIT = 0x100, | |
63 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
64 | }; | |
7a292a7a | 65 | #endif |
8e860359 CF |
66 | #include <sys/procfs.h> |
67 | #include <psapi.h> | |
7a292a7a | 68 | |
c906108c SS |
69 | /* The string sent by cygwin when it processes a signal. |
70 | FIXME: This should be in a cygwin include file. */ | |
71 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
72 | ||
29fe111d | 73 | #define CHECK(x) check (x, __FILE__,__LINE__) |
c906108c SS |
74 | #define DEBUG_EXEC(x) if (debug_exec) printf x |
75 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
76 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
77 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
78 | ||
79 | /* Forward declaration */ | |
80 | extern struct target_ops child_ops; | |
81 | ||
a14ed312 | 82 | static void child_stop (void); |
39f77062 | 83 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 84 | void child_kill_inferior (void); |
c906108c | 85 | |
8a892701 CF |
86 | static int last_sig = 0; /* Set if a signal was received from the |
87 | debugged process */ | |
c906108c SS |
88 | /* Thread information structure used to track information that is |
89 | not available in gdb's thread structure. */ | |
90 | typedef struct thread_info_struct | |
c5aa993b JM |
91 | { |
92 | struct thread_info_struct *next; | |
93 | DWORD id; | |
94 | HANDLE h; | |
95 | char *name; | |
96 | int suspend_count; | |
97 | CONTEXT context; | |
c2d11a7d | 98 | STACKFRAME sf; |
8e860359 CF |
99 | } |
100 | thread_info; | |
c2d11a7d | 101 | |
29fe111d | 102 | static thread_info thread_head; |
c906108c | 103 | |
c906108c SS |
104 | /* The process and thread handles for the above context. */ |
105 | ||
106 | static DEBUG_EVENT current_event; /* The current debug event from | |
107 | WaitForDebugEvent */ | |
108 | static HANDLE current_process_handle; /* Currently executing process */ | |
109 | static thread_info *current_thread; /* Info on currently selected thread */ | |
c5aa993b | 110 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
c906108c SS |
111 | |
112 | /* Counts of things. */ | |
113 | static int exception_count = 0; | |
114 | static int event_count = 0; | |
115 | ||
116 | /* User options. */ | |
117 | static int new_console = 0; | |
c2d11a7d | 118 | static int new_group = 1; |
c5aa993b JM |
119 | static int debug_exec = 0; /* show execution */ |
120 | static int debug_events = 0; /* show events from kernel */ | |
121 | static int debug_memory = 0; /* show target memory accesses */ | |
c906108c SS |
122 | static int debug_exceptions = 0; /* show target exceptions */ |
123 | ||
124 | /* This vector maps GDB's idea of a register's number into an address | |
125 | in the win32 exception context vector. | |
126 | ||
127 | It also contains the bit mask needed to load the register in question. | |
128 | ||
129 | One day we could read a reg, we could inspect the context we | |
130 | already have loaded, if it doesn't have the bit set that we need, | |
131 | we read that set of registers in using GetThreadContext. If the | |
132 | context already contains what we need, we just unpack it. Then to | |
133 | write a register, first we have to ensure that the context contains | |
134 | the other regs of the group, and then we copy the info in and set | |
135 | out bit. */ | |
136 | ||
137 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) | |
138 | static const int mappings[] = | |
139 | { | |
c5aa993b JM |
140 | context_offset (Eax), |
141 | context_offset (Ecx), | |
142 | context_offset (Edx), | |
143 | context_offset (Ebx), | |
144 | context_offset (Esp), | |
145 | context_offset (Ebp), | |
146 | context_offset (Esi), | |
147 | context_offset (Edi), | |
148 | context_offset (Eip), | |
149 | context_offset (EFlags), | |
150 | context_offset (SegCs), | |
151 | context_offset (SegSs), | |
152 | context_offset (SegDs), | |
153 | context_offset (SegEs), | |
154 | context_offset (SegFs), | |
155 | context_offset (SegGs), | |
156 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
157 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
158 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
159 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
160 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
161 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
162 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
163 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
c2d11a7d JM |
164 | context_offset (FloatSave.ControlWord), |
165 | context_offset (FloatSave.StatusWord), | |
166 | context_offset (FloatSave.TagWord), | |
167 | context_offset (FloatSave.ErrorSelector), | |
168 | context_offset (FloatSave.ErrorOffset), | |
169 | context_offset (FloatSave.DataSelector), | |
170 | context_offset (FloatSave.DataOffset), | |
ed9a39eb | 171 | context_offset (FloatSave.ErrorSelector) |
c906108c SS |
172 | }; |
173 | ||
ed9a39eb JM |
174 | #undef context_offset |
175 | ||
c906108c SS |
176 | /* This vector maps the target's idea of an exception (extracted |
177 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
178 | ||
179 | struct xlate_exception | |
180 | { | |
181 | int them; | |
182 | enum target_signal us; | |
183 | }; | |
184 | ||
185 | static const struct xlate_exception | |
186 | xlate[] = | |
187 | { | |
188 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
189 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, | |
190 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, | |
191 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
192 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
193 | {-1, -1}}; | |
194 | ||
195 | /* Find a thread record given a thread id. | |
196 | If get_context then also retrieve the context for this | |
197 | thread. */ | |
198 | static thread_info * | |
199 | thread_rec (DWORD id, int get_context) | |
200 | { | |
201 | thread_info *th; | |
202 | ||
c5aa993b | 203 | for (th = &thread_head; (th = th->next) != NULL;) |
c906108c SS |
204 | if (th->id == id) |
205 | { | |
206 | if (!th->suspend_count && get_context) | |
207 | { | |
8a892701 | 208 | if (get_context > 0 && id != current_event.dwThreadId) |
c906108c SS |
209 | th->suspend_count = SuspendThread (th->h) + 1; |
210 | else if (get_context < 0) | |
211 | th->suspend_count = -1; | |
212 | ||
213 | th->context.ContextFlags = CONTEXT_DEBUGGER; | |
214 | GetThreadContext (th->h, &th->context); | |
215 | } | |
216 | return th; | |
217 | } | |
218 | ||
219 | return NULL; | |
220 | } | |
221 | ||
222 | /* Add a thread to the thread list */ | |
223 | static thread_info * | |
c5aa993b | 224 | child_add_thread (DWORD id, HANDLE h) |
c906108c SS |
225 | { |
226 | thread_info *th; | |
227 | ||
228 | if ((th = thread_rec (id, FALSE))) | |
229 | return th; | |
230 | ||
231 | th = (thread_info *) xmalloc (sizeof (*th)); | |
c5aa993b | 232 | memset (th, 0, sizeof (*th)); |
c906108c SS |
233 | th->id = id; |
234 | th->h = h; | |
235 | th->next = thread_head.next; | |
236 | thread_head.next = th; | |
39f77062 | 237 | add_thread (pid_to_ptid (id)); |
c906108c SS |
238 | return th; |
239 | } | |
240 | ||
241 | /* Clear out any old thread list and reintialize it to a | |
242 | pristine state. */ | |
243 | static void | |
fba45db2 | 244 | child_init_thread_list (void) |
c906108c SS |
245 | { |
246 | thread_info *th = &thread_head; | |
247 | ||
248 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
249 | init_thread_list (); | |
250 | while (th->next != NULL) | |
251 | { | |
252 | thread_info *here = th->next; | |
253 | th->next = here->next; | |
254 | (void) CloseHandle (here->h); | |
b8c9b27d | 255 | xfree (here); |
c906108c SS |
256 | } |
257 | } | |
258 | ||
259 | /* Delete a thread from the list of threads */ | |
260 | static void | |
261 | child_delete_thread (DWORD id) | |
262 | { | |
263 | thread_info *th; | |
264 | ||
265 | if (info_verbose) | |
39f77062 KB |
266 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
267 | delete_thread (pid_to_ptid (id)); | |
c906108c SS |
268 | |
269 | for (th = &thread_head; | |
270 | th->next != NULL && th->next->id != id; | |
271 | th = th->next) | |
272 | continue; | |
273 | ||
274 | if (th->next != NULL) | |
275 | { | |
276 | thread_info *here = th->next; | |
277 | th->next = here->next; | |
278 | CloseHandle (here->h); | |
b8c9b27d | 279 | xfree (here); |
c906108c SS |
280 | } |
281 | } | |
282 | ||
283 | static void | |
284 | check (BOOL ok, const char *file, int line) | |
285 | { | |
286 | if (!ok) | |
29fe111d | 287 | printf_filtered ("error return %s:%d was %lu\n", file, line, GetLastError ()); |
c906108c SS |
288 | } |
289 | ||
290 | static void | |
291 | do_child_fetch_inferior_registers (int r) | |
292 | { | |
c2d11a7d JM |
293 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
294 | long l; | |
295 | if (r == FCS_REGNUM) | |
296 | { | |
8e860359 | 297 | l = *((long *) context_offset) & 0xffff; |
c2d11a7d JM |
298 | supply_register (r, (char *) &l); |
299 | } | |
300 | else if (r == FOP_REGNUM) | |
301 | { | |
8e860359 | 302 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
c2d11a7d JM |
303 | supply_register (r, (char *) &l); |
304 | } | |
305 | else if (r >= 0) | |
ed9a39eb | 306 | supply_register (r, context_offset); |
c906108c SS |
307 | else |
308 | { | |
309 | for (r = 0; r < NUM_REGS; r++) | |
310 | do_child_fetch_inferior_registers (r); | |
311 | } | |
312 | } | |
313 | ||
314 | static void | |
315 | child_fetch_inferior_registers (int r) | |
316 | { | |
39f77062 | 317 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
318 | do_child_fetch_inferior_registers (r); |
319 | } | |
320 | ||
321 | static void | |
322 | do_child_store_inferior_registers (int r) | |
323 | { | |
324 | if (r >= 0) | |
325 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
326 | else | |
327 | { | |
328 | for (r = 0; r < NUM_REGS; r++) | |
329 | do_child_store_inferior_registers (r); | |
330 | } | |
331 | } | |
332 | ||
333 | /* Store a new register value into the current thread context */ | |
334 | static void | |
335 | child_store_inferior_registers (int r) | |
336 | { | |
39f77062 | 337 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
338 | do_child_store_inferior_registers (r); |
339 | } | |
340 | ||
c2d11a7d JM |
341 | static int psapi_loaded = 0; |
342 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
343 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
344 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
345 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
c2d11a7d | 346 | |
8e860359 CF |
347 | int |
348 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) | |
c2d11a7d JM |
349 | { |
350 | DWORD len; | |
351 | MODULEINFO mi; | |
352 | int i; | |
8e860359 CF |
353 | HMODULE dh_buf[1]; |
354 | HMODULE *DllHandle = dh_buf; | |
c2d11a7d JM |
355 | DWORD cbNeeded; |
356 | BOOL ok; | |
357 | ||
358 | if (!psapi_loaded || | |
8e860359 CF |
359 | psapi_EnumProcessModules == NULL || |
360 | psapi_GetModuleInformation == NULL || | |
361 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d | 362 | { |
8e860359 CF |
363 | if (psapi_loaded) |
364 | goto failed; | |
c2d11a7d JM |
365 | psapi_loaded = 1; |
366 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
367 | if (!psapi_module_handle) | |
8e860359 CF |
368 | { |
369 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
370 | goto failed; | |
371 | } | |
372 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
c2d11a7d JM |
373 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
374 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
375 | "GetModuleFileNameExA"); |
376 | if (psapi_EnumProcessModules == NULL || | |
377 | psapi_GetModuleInformation == NULL || | |
378 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d JM |
379 | goto failed; |
380 | } | |
381 | ||
382 | cbNeeded = 0; | |
383 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
384 | DllHandle, |
385 | sizeof (HMODULE), | |
386 | &cbNeeded); | |
c2d11a7d JM |
387 | |
388 | if (!ok || !cbNeeded) | |
389 | goto failed; | |
390 | ||
8e860359 | 391 | DllHandle = (HMODULE *) alloca (cbNeeded); |
c2d11a7d JM |
392 | if (!DllHandle) |
393 | goto failed; | |
394 | ||
395 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
396 | DllHandle, |
397 | cbNeeded, | |
398 | &cbNeeded); | |
c2d11a7d JM |
399 | if (!ok) |
400 | goto failed; | |
401 | ||
29fe111d | 402 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
c2d11a7d JM |
403 | { |
404 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
405 | DllHandle[i], |
406 | &mi, | |
407 | sizeof (mi))) | |
c2d11a7d JM |
408 | error ("Can't get module info"); |
409 | ||
410 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
411 | DllHandle[i], |
412 | dll_name_ret, | |
413 | MAX_PATH); | |
c2d11a7d | 414 | if (len == 0) |
29fe111d | 415 | error ("Error getting dll name: %u\n", GetLastError ()); |
c2d11a7d JM |
416 | |
417 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
418 | return 1; | |
419 | } | |
420 | ||
421 | failed: | |
422 | dll_name_ret[0] = '\0'; | |
423 | return 0; | |
424 | } | |
425 | ||
450005e7 CF |
426 | /* Encapsulate the information required in a call to |
427 | symbol_file_add_args */ | |
8a892701 CF |
428 | struct safe_symbol_file_add_args |
429 | { | |
430 | char *name; | |
431 | int from_tty; | |
432 | struct section_addr_info *addrs; | |
433 | int mainline; | |
434 | int flags; | |
7c5c87c0 | 435 | struct ui_file *err, *out; |
8a892701 CF |
436 | struct objfile *ret; |
437 | }; | |
438 | ||
02e423b9 CF |
439 | /* Maintain a linked list of "so" information. */ |
440 | struct so_stuff | |
441 | { | |
d3ff4a77 | 442 | struct so_stuff *next; |
02e423b9 | 443 | DWORD load_addr; |
7470a420 | 444 | int loaded; |
d3ff4a77 | 445 | struct objfile *objfile; |
7470a420 CF |
446 | char name[1]; |
447 | } solib_start, *solib_end; | |
02e423b9 | 448 | |
450005e7 CF |
449 | /* Call symbol_file_add with stderr redirected. We don't care if there |
450 | are errors. */ | |
8a892701 CF |
451 | static int |
452 | safe_symbol_file_add_stub (void *argv) | |
453 | { | |
454 | #define p ((struct safe_symbol_file_add_args *)argv) | |
fefd0a37 | 455 | struct so_stuff *so = &solib_start; |
02e423b9 CF |
456 | |
457 | while ((so = so->next)) | |
7470a420 | 458 | if (so->loaded && strcasecmp (so->name, p->name) == 0) |
02e423b9 | 459 | return 0; |
8a892701 CF |
460 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
461 | return !!p->ret; | |
462 | #undef p | |
463 | } | |
464 | ||
450005e7 | 465 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 466 | static void |
7c5c87c0 | 467 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 468 | { |
8e860359 | 469 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 470 | gdb_flush (gdb_stderr); |
7c5c87c0 | 471 | gdb_flush (gdb_stdout); |
d3ff4a77 | 472 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 473 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 474 | gdb_stderr = sp->err; |
9d3789f7 | 475 | gdb_stdout = sp->out; |
8e860359 | 476 | #undef sp |
8a892701 CF |
477 | } |
478 | ||
450005e7 | 479 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
480 | static struct objfile * |
481 | safe_symbol_file_add (char *name, int from_tty, | |
482 | struct section_addr_info *addrs, | |
483 | int mainline, int flags) | |
8a892701 CF |
484 | { |
485 | struct safe_symbol_file_add_args p; | |
486 | struct cleanup *cleanup; | |
487 | ||
7c5c87c0 | 488 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 489 | |
7c5c87c0 CF |
490 | p.err = gdb_stderr; |
491 | p.out = gdb_stdout; | |
450005e7 | 492 | gdb_flush (gdb_stderr); |
7c5c87c0 | 493 | gdb_flush (gdb_stdout); |
d3ff4a77 | 494 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 495 | gdb_stdout = ui_file_new (); |
8a892701 CF |
496 | p.name = name; |
497 | p.from_tty = from_tty; | |
498 | p.addrs = addrs; | |
499 | p.mainline = mainline; | |
500 | p.flags = flags; | |
501 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
502 | ||
503 | do_cleanups (cleanup); | |
504 | return p.ret; | |
505 | } | |
506 | ||
450005e7 CF |
507 | /* Remember the maximum DLL length for printing in info dll command. */ |
508 | int max_dll_name_len; | |
509 | ||
8e860359 CF |
510 | static void |
511 | register_loaded_dll (const char *name, DWORD load_addr) | |
512 | { | |
513 | struct so_stuff *so; | |
7470a420 | 514 | char ppath[MAX_PATH + 1]; |
3f8ad85b CF |
515 | char buf[MAX_PATH + 1]; |
516 | char cwd[MAX_PATH + 1]; | |
517 | char *p; | |
518 | WIN32_FIND_DATA w32_fd; | |
519 | HANDLE h = FindFirstFile(name, &w32_fd); | |
520 | size_t len; | |
521 | ||
522 | FindClose (h); | |
523 | strcpy (buf, name); | |
524 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
525 | { | |
526 | p = strrchr (buf, '\\'); | |
527 | if (p) | |
528 | p[1] = '\0'; | |
529 | SetCurrentDirectory (buf); | |
530 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
531 | SetCurrentDirectory (cwd); | |
532 | } | |
533 | ||
534 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
535 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
536 | so->loaded = 0; | |
8e860359 | 537 | so->load_addr = load_addr; |
d3ff4a77 CF |
538 | so->next = NULL; |
539 | so->objfile = NULL; | |
7470a420 | 540 | strcpy (so->name, ppath); |
8e860359 CF |
541 | |
542 | solib_end->next = so; | |
543 | solib_end = so; | |
3f8ad85b CF |
544 | len = strlen (ppath); |
545 | if (len > max_dll_name_len) | |
546 | max_dll_name_len = len; | |
8e860359 CF |
547 | } |
548 | ||
c906108c SS |
549 | /* Wait for child to do something. Return pid of child, or -1 in case |
550 | of error; store status through argument pointer OURSTATUS. */ | |
c906108c | 551 | static int |
554cb486 | 552 | handle_load_dll (void *dummy ATTRIBUTE_UNUSED) |
c906108c | 553 | { |
c5aa993b | 554 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
c906108c SS |
555 | DWORD dll_name_ptr; |
556 | DWORD done; | |
557 | char dll_buf[MAX_PATH + 1]; | |
450005e7 | 558 | char *dll_name = NULL; |
450005e7 | 559 | char *p; |
c906108c | 560 | |
c5aa993b | 561 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 562 | |
c2d11a7d | 563 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 564 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 565 | |
c2d11a7d | 566 | dll_name = dll_buf; |
c906108c SS |
567 | |
568 | /* Attempt to read the name of the dll that was detected. | |
569 | This is documented to work only when actively debugging | |
570 | a program. It will not work for attached processes. */ | |
571 | if (dll_name == NULL || *dll_name == '\0') | |
572 | { | |
29fe111d | 573 | DWORD size = event->fUnicode ? sizeof (WCHAR) : sizeof (char); |
c906108c SS |
574 | int len = 0; |
575 | char b[2]; | |
576 | ||
577 | ReadProcessMemory (current_process_handle, | |
578 | (LPCVOID) event->lpImageName, | |
579 | (char *) &dll_name_ptr, | |
580 | sizeof (dll_name_ptr), &done); | |
581 | ||
582 | /* See if we could read the address of a string, and that the | |
c5aa993b | 583 | address isn't null. */ |
c906108c SS |
584 | |
585 | if (done != sizeof (dll_name_ptr) || !dll_name_ptr) | |
586 | return 1; | |
587 | ||
588 | do | |
589 | { | |
590 | ReadProcessMemory (current_process_handle, | |
591 | (LPCVOID) (dll_name_ptr + len * size), | |
592 | &b, | |
593 | size, | |
594 | &done); | |
595 | len++; | |
596 | } | |
597 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
598 | ||
599 | dll_name = alloca (len); | |
600 | ||
601 | if (event->fUnicode) | |
602 | { | |
603 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
604 | ReadProcessMemory (current_process_handle, | |
605 | (LPCVOID) dll_name_ptr, | |
606 | unicode_dll_name, | |
607 | len * sizeof (WCHAR), | |
608 | &done); | |
609 | ||
610 | WideCharToMultiByte (CP_ACP, 0, | |
611 | unicode_dll_name, len, | |
612 | dll_name, len, 0, 0); | |
613 | } | |
614 | else | |
615 | { | |
616 | ReadProcessMemory (current_process_handle, | |
617 | (LPCVOID) dll_name_ptr, | |
618 | dll_name, | |
619 | len, | |
620 | &done); | |
621 | } | |
622 | } | |
623 | ||
624 | if (!dll_name) | |
625 | return 1; | |
626 | ||
8e860359 | 627 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
628 | |
629 | return 1; | |
630 | } | |
631 | ||
d3ff4a77 CF |
632 | static int |
633 | handle_unload_dll (void *dummy ATTRIBUTE_UNUSED) | |
634 | { | |
635 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
636 | struct so_stuff *so; | |
637 | ||
638 | for (so = &solib_start; so->next != NULL; so = so->next) | |
639 | if (so->next->load_addr == lpBaseOfDll) | |
640 | { | |
641 | struct so_stuff *sodel = so->next; | |
642 | so->next = sodel->next; | |
643 | if (!so->next) | |
644 | solib_end = so; | |
645 | if (sodel->objfile) | |
646 | free_objfile (sodel->objfile); | |
647 | xfree(sodel); | |
648 | return 1; | |
649 | } | |
650 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
651 | ||
652 | return 0; | |
653 | } | |
654 | ||
450005e7 CF |
655 | /* Return name of last loaded DLL. */ |
656 | char * | |
9d3789f7 | 657 | child_solib_loaded_library_pathname (int pid ATTRIBUTE_UNUSED) |
450005e7 | 658 | { |
8e860359 | 659 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
660 | } |
661 | ||
662 | /* Clear list of loaded DLLs. */ | |
663 | void | |
664 | child_clear_solibs (void) | |
665 | { | |
666 | struct so_stuff *so, *so1 = solib_start.next; | |
667 | ||
668 | while ((so = so1) != NULL) | |
669 | { | |
670 | so1 = so->next; | |
b8c9b27d | 671 | xfree (so); |
450005e7 CF |
672 | } |
673 | ||
674 | solib_start.next = NULL; | |
d3ff4a77 | 675 | solib_start.objfile = NULL; |
450005e7 CF |
676 | solib_end = &solib_start; |
677 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
678 | } | |
679 | ||
680 | /* Add DLL symbol information. */ | |
d3ff4a77 | 681 | static struct objfile * |
02e423b9 | 682 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 CF |
683 | { |
684 | struct section_addr_info section_addrs; | |
685 | ||
c906108c SS |
686 | /* The symbols in a dll are offset by 0x1000, which is the |
687 | the offset from 0 of the first byte in an image - because | |
8a892701 | 688 | of the file header and the section alignment. */ |
c906108c | 689 | |
8e860359 | 690 | if (!name || !name[0]) |
d3ff4a77 | 691 | return NULL; |
450005e7 CF |
692 | |
693 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 694 | section_addrs.other[0].name = ".text"; |
8e860359 | 695 | section_addrs.other[0].addr = load_addr; |
d3ff4a77 | 696 | return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED); |
450005e7 CF |
697 | } |
698 | ||
699 | /* Load DLL symbol info. */ | |
700 | void | |
7470a420 | 701 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 702 | { |
8e860359 | 703 | int n; |
450005e7 | 704 | dont_repeat (); |
8e860359 | 705 | |
450005e7 CF |
706 | if (args == NULL) |
707 | error ("dll-symbols requires a file name"); | |
708 | ||
8e860359 CF |
709 | n = strlen (args); |
710 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
711 | { | |
712 | char *newargs = (char *) alloca (n + 4 + 1); | |
713 | strcpy (newargs, args); | |
714 | strcat (newargs, ".dll"); | |
715 | args = newargs; | |
716 | } | |
717 | ||
7470a420 | 718 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 719 | } |
450005e7 CF |
720 | |
721 | /* List currently loaded DLLs. */ | |
722 | void | |
9d3789f7 | 723 | info_dll_command (char *ignore ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
450005e7 CF |
724 | { |
725 | struct so_stuff *so = &solib_start; | |
726 | ||
727 | if (!so->next) | |
728 | return; | |
729 | ||
730 | printf ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); | |
731 | while ((so = so->next) != NULL) | |
7c5c87c0 | 732 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
733 | |
734 | return; | |
c906108c SS |
735 | } |
736 | ||
737 | /* Handle DEBUG_STRING output from child process. | |
738 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
739 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
740 | static int | |
741 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
742 | { | |
743 | char *s; | |
744 | int gotasig = FALSE; | |
745 | ||
746 | if (!target_read_string | |
c5aa993b | 747 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
c906108c SS |
748 | || !s || !*s) |
749 | return gotasig; | |
750 | ||
ed9a39eb | 751 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
c906108c | 752 | { |
ed9a39eb | 753 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 754 | warning ("%s", s); |
c906108c | 755 | } |
ed9a39eb | 756 | else |
c906108c SS |
757 | { |
758 | char *p; | |
c2d11a7d JM |
759 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
760 | gotasig = target_signal_from_host (sig); | |
7a292a7a SS |
761 | ourstatus->value.sig = gotasig; |
762 | if (gotasig) | |
c906108c SS |
763 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
764 | } | |
765 | ||
b8c9b27d | 766 | xfree (s); |
c906108c SS |
767 | return gotasig; |
768 | } | |
769 | ||
770 | static int | |
450005e7 | 771 | handle_exception (struct target_waitstatus *ourstatus) |
c906108c | 772 | { |
c906108c | 773 | thread_info *th; |
29fe111d | 774 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
c906108c | 775 | |
29fe111d | 776 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 777 | |
c906108c SS |
778 | /* Record the context of the current thread */ |
779 | th = thread_rec (current_event.dwThreadId, -1); | |
780 | ||
29fe111d | 781 | switch (code) |
c906108c SS |
782 | { |
783 | case EXCEPTION_ACCESS_VIOLATION: | |
29fe111d | 784 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n", |
8e860359 | 785 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 786 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
8a892701 | 787 | last_sig = SIGSEGV; |
c906108c | 788 | break; |
0d06e24b JM |
789 | case STATUS_FLOAT_UNDERFLOW: |
790 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
791 | case STATUS_FLOAT_OVERFLOW: | |
792 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
29fe111d | 793 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 794 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
0d06e24b | 795 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
29fe111d | 796 | last_sig = SIGFPE; |
0d06e24b | 797 | break; |
c906108c | 798 | case STATUS_STACK_OVERFLOW: |
29fe111d | 799 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 800 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
801 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
802 | break; | |
803 | case EXCEPTION_BREAKPOINT: | |
29fe111d | 804 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n", |
8e860359 | 805 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
806 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
807 | break; | |
808 | case DBG_CONTROL_C: | |
29fe111d | 809 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n", |
8e860359 | 810 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 811 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
8a892701 | 812 | last_sig = SIGINT; /* FIXME - should check pass state */ |
c906108c SS |
813 | break; |
814 | case EXCEPTION_SINGLE_STEP: | |
29fe111d | 815 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n", |
8e860359 | 816 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
817 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
818 | break; | |
8227c82d | 819 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
29fe111d | 820 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n", |
8e860359 | 821 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
8227c82d | 822 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
8a892701 | 823 | last_sig = SIGILL; |
8227c82d | 824 | break; |
c906108c | 825 | default: |
02e423b9 CF |
826 | if (current_event.u.Exception.dwFirstChance) |
827 | return 0; | |
29fe111d | 828 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
c5aa993b | 829 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 830 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
c906108c SS |
831 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
832 | break; | |
833 | } | |
834 | exception_count++; | |
835 | return 1; | |
836 | } | |
837 | ||
838 | /* Resume all artificially suspended threads if we are continuing | |
839 | execution */ | |
840 | static BOOL | |
8a892701 | 841 | child_continue (DWORD continue_status, int id) |
c906108c SS |
842 | { |
843 | int i; | |
844 | thread_info *th; | |
845 | BOOL res; | |
846 | ||
29fe111d | 847 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n", |
c906108c | 848 | current_event.dwProcessId, current_event.dwThreadId)); |
7a292a7a SS |
849 | res = ContinueDebugEvent (current_event.dwProcessId, |
850 | current_event.dwThreadId, | |
851 | continue_status); | |
c2d11a7d | 852 | continue_status = 0; |
7a292a7a | 853 | if (res) |
c5aa993b | 854 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 855 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
c906108c SS |
856 | { |
857 | for (i = 0; i < th->suspend_count; i++) | |
858 | (void) ResumeThread (th->h); | |
859 | th->suspend_count = 0; | |
860 | } | |
861 | ||
862 | return res; | |
863 | } | |
864 | ||
8a892701 CF |
865 | /* Get the next event from the child. Return 1 if the event requires |
866 | handling by WFI (or whatever). | |
867 | */ | |
c2d11a7d | 868 | static int |
450005e7 | 869 | get_child_debug_event (int pid ATTRIBUTE_UNUSED, struct target_waitstatus *ourstatus) |
c2d11a7d JM |
870 | { |
871 | BOOL debug_event; | |
8a892701 CF |
872 | DWORD continue_status, event_code; |
873 | thread_info *th = NULL; | |
874 | static thread_info dummy_thread_info; | |
450005e7 | 875 | int retval = 0; |
c2d11a7d | 876 | |
9d3789f7 CF |
877 | last_sig = 0; |
878 | ||
8a892701 | 879 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 880 | goto out; |
c2d11a7d JM |
881 | |
882 | event_count++; | |
883 | continue_status = DBG_CONTINUE; | |
c2d11a7d | 884 | |
8a892701 | 885 | event_code = current_event.dwDebugEventCode; |
450005e7 | 886 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
887 | |
888 | switch (event_code) | |
c2d11a7d JM |
889 | { |
890 | case CREATE_THREAD_DEBUG_EVENT: | |
891 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
892 | (unsigned) current_event.dwProcessId, |
893 | (unsigned) current_event.dwThreadId, | |
894 | "CREATE_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 895 | /* Record the existence of this thread */ |
8a892701 CF |
896 | th = child_add_thread (current_event.dwThreadId, |
897 | current_event.u.CreateThread.hThread); | |
c2d11a7d JM |
898 | if (info_verbose) |
899 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
900 | target_pid_to_str ( |
901 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 902 | retval = current_event.dwThreadId; |
c2d11a7d JM |
903 | break; |
904 | ||
905 | case EXIT_THREAD_DEBUG_EVENT: | |
906 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
907 | (unsigned) current_event.dwProcessId, |
908 | (unsigned) current_event.dwThreadId, | |
909 | "EXIT_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 910 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 911 | th = &dummy_thread_info; |
c2d11a7d JM |
912 | break; |
913 | ||
914 | case CREATE_PROCESS_DEBUG_EVENT: | |
915 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
916 | (unsigned) current_event.dwProcessId, |
917 | (unsigned) current_event.dwThreadId, | |
918 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 919 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
c2d11a7d JM |
920 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
921 | ||
9d3789f7 | 922 | main_thread_id = current_event.dwThreadId; |
c2d11a7d | 923 | /* Add the main thread */ |
9d3789f7 | 924 | #if 0 |
450005e7 CF |
925 | th = child_add_thread (current_event.dwProcessId, |
926 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
927 | #endif |
928 | th = child_add_thread (main_thread_id, | |
8a892701 | 929 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 930 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
c2d11a7d JM |
931 | break; |
932 | ||
933 | case EXIT_PROCESS_DEBUG_EVENT: | |
934 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
935 | (unsigned) current_event.dwProcessId, |
936 | (unsigned) current_event.dwThreadId, | |
937 | "EXIT_PROCESS_DEBUG_EVENT")); | |
c2d11a7d JM |
938 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
939 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
940 | CloseHandle (current_process_handle); | |
9d3789f7 | 941 | retval = main_thread_id; |
8a892701 | 942 | break; |
c2d11a7d JM |
943 | |
944 | case LOAD_DLL_DEBUG_EVENT: | |
945 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
946 | (unsigned) current_event.dwProcessId, |
947 | (unsigned) current_event.dwThreadId, | |
948 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 949 | CloseHandle (current_event.u.LoadDll.hFile); |
8a892701 | 950 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
c2d11a7d | 951 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
952 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
953 | ourstatus->value.integer = 0; | |
9d3789f7 | 954 | retval = main_thread_id; |
c2d11a7d JM |
955 | break; |
956 | ||
957 | case UNLOAD_DLL_DEBUG_EVENT: | |
958 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
959 | (unsigned) current_event.dwProcessId, |
960 | (unsigned) current_event.dwThreadId, | |
961 | "UNLOAD_DLL_DEBUG_EVENT")); | |
d3ff4a77 CF |
962 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
963 | registers_changed (); /* mark all regs invalid */ | |
964 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
965 | does not exist yet. */ | |
966 | break; | |
c2d11a7d JM |
967 | |
968 | case EXCEPTION_DEBUG_EVENT: | |
969 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
970 | (unsigned) current_event.dwProcessId, |
971 | (unsigned) current_event.dwThreadId, | |
972 | "EXCEPTION_DEBUG_EVENT")); | |
02e423b9 CF |
973 | if (handle_exception (ourstatus)) |
974 | retval = current_event.dwThreadId; | |
c2d11a7d JM |
975 | break; |
976 | ||
8a892701 | 977 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
c2d11a7d | 978 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
979 | (unsigned) current_event.dwProcessId, |
980 | (unsigned) current_event.dwThreadId, | |
981 | "OUTPUT_DEBUG_STRING_EVENT")); | |
8e860359 | 982 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 983 | retval = main_thread_id; |
c2d11a7d | 984 | break; |
9d3789f7 | 985 | |
c2d11a7d | 986 | default: |
29fe111d CF |
987 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
988 | (DWORD) current_event.dwProcessId, | |
989 | (DWORD) current_event.dwThreadId); | |
990 | printf_unfiltered (" unknown event code %ld\n", | |
c2d11a7d JM |
991 | current_event.dwDebugEventCode); |
992 | break; | |
993 | } | |
994 | ||
450005e7 | 995 | if (!retval) |
8a892701 | 996 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 997 | else |
9d3789f7 | 998 | { |
8e860359 | 999 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1000 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1001 | } |
c2d11a7d JM |
1002 | |
1003 | out: | |
450005e7 | 1004 | return retval; |
c2d11a7d JM |
1005 | } |
1006 | ||
c2d11a7d | 1007 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1008 | static ptid_t |
1009 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
c906108c | 1010 | { |
39f77062 KB |
1011 | int pid = PIDGET (ptid); |
1012 | ||
c906108c SS |
1013 | /* We loop when we get a non-standard exception rather than return |
1014 | with a SPURIOUS because resume can try and step or modify things, | |
1015 | which needs a current_thread->h. But some of these exceptions mark | |
1016 | the birth or death of threads, which mean that the current thread | |
1017 | isn't necessarily what you think it is. */ | |
1018 | ||
1019 | while (1) | |
450005e7 CF |
1020 | { |
1021 | int retval = get_child_debug_event (pid, ourstatus); | |
1022 | if (retval) | |
39f77062 | 1023 | return pid_to_ptid (retval); |
450005e7 CF |
1024 | else |
1025 | { | |
1026 | int detach = 0; | |
c906108c | 1027 | |
450005e7 CF |
1028 | if (ui_loop_hook != NULL) |
1029 | detach = ui_loop_hook (0); | |
7a292a7a | 1030 | |
450005e7 CF |
1031 | if (detach) |
1032 | child_kill_inferior (); | |
1033 | } | |
1034 | } | |
c906108c SS |
1035 | } |
1036 | ||
9d3789f7 CF |
1037 | static void |
1038 | do_initial_child_stuff (DWORD pid) | |
1039 | { | |
1040 | extern int stop_after_trap; | |
1041 | ||
1042 | last_sig = 0; | |
1043 | event_count = 0; | |
1044 | exception_count = 0; | |
1045 | current_event.dwProcessId = pid; | |
1046 | memset (¤t_event, 0, sizeof (current_event)); | |
1047 | push_target (&child_ops); | |
1048 | child_init_thread_list (); | |
1049 | child_clear_solibs (); | |
1050 | clear_proceed_status (); | |
1051 | init_wait_for_inferior (); | |
1052 | ||
1053 | target_terminal_init (); | |
1054 | target_terminal_inferior (); | |
1055 | ||
1056 | while (1) | |
1057 | { | |
1058 | stop_after_trap = 1; | |
1059 | wait_for_inferior (); | |
1060 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1061 | resume (0, stop_signal); | |
1062 | else | |
1063 | break; | |
1064 | } | |
1065 | stop_after_trap = 0; | |
1066 | return; | |
1067 | } | |
1068 | ||
02cc9f49 CV |
1069 | /* Since Windows XP, detaching from a process is supported by Windows. |
1070 | The following code tries loading the appropriate functions dynamically. | |
1071 | If loading these functions succeeds use them to actually detach from | |
1072 | the inferior process, otherwise behave as usual, pretending that | |
1073 | detach has worked. */ | |
1074 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1075 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1076 | ||
1077 | static int | |
1078 | has_detach_ability () | |
1079 | { | |
1080 | static HMODULE kernel32 = NULL; | |
1081 | ||
1082 | if (!kernel32) | |
1083 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1084 | if (kernel32) | |
1085 | { | |
1086 | if (!DebugSetProcessKillOnExit) | |
1087 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1088 | "DebugSetProcessKillOnExit"); | |
1089 | if (!DebugActiveProcessStop) | |
1090 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1091 | "DebugActiveProcessStop"); | |
1092 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1093 | return 1; | |
1094 | } | |
1095 | return 0; | |
1096 | } | |
c906108c | 1097 | |
02cc9f49 | 1098 | /* Attach to process PID, then initialize for debugging it. */ |
c906108c | 1099 | static void |
fba45db2 | 1100 | child_attach (char *args, int from_tty) |
c906108c SS |
1101 | { |
1102 | BOOL ok; | |
559e75c0 | 1103 | DWORD pid; |
c906108c SS |
1104 | |
1105 | if (!args) | |
1106 | error_no_arg ("process-id to attach"); | |
1107 | ||
559e75c0 | 1108 | pid = strtoul (args, 0, 0); |
9d3789f7 | 1109 | ok = DebugActiveProcess (pid); |
c906108c SS |
1110 | |
1111 | if (!ok) | |
1112 | error ("Can't attach to process."); | |
1113 | ||
02cc9f49 CV |
1114 | if (has_detach_ability ()) |
1115 | { | |
1116 | attach_flag = 1; | |
1117 | DebugSetProcessKillOnExit (FALSE); | |
1118 | } | |
1119 | ||
c906108c SS |
1120 | if (from_tty) |
1121 | { | |
1122 | char *exec_file = (char *) get_exec_file (0); | |
1123 | ||
1124 | if (exec_file) | |
1125 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1126 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1127 | else |
1128 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1129 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1130 | |
1131 | gdb_flush (gdb_stdout); | |
1132 | } | |
1133 | ||
9d3789f7 CF |
1134 | do_initial_child_stuff (pid); |
1135 | target_terminal_ours (); | |
c906108c SS |
1136 | } |
1137 | ||
1138 | static void | |
29fe111d | 1139 | child_detach (char *args ATTRIBUTE_UNUSED, int from_tty) |
c906108c | 1140 | { |
02cc9f49 CV |
1141 | int detached = 1; |
1142 | ||
1143 | if (has_detach_ability ()) | |
1144 | { | |
1145 | delete_command (NULL, 0); | |
1146 | child_continue (DBG_CONTINUE, -1); | |
1147 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
1148 | { | |
1149 | error ("Can't detach process %lu (error %lu)", | |
1150 | current_event.dwProcessId, GetLastError ()); | |
1151 | detached = 0; | |
1152 | } | |
1153 | DebugSetProcessKillOnExit (FALSE); | |
1154 | } | |
1155 | if (detached && from_tty) | |
c906108c SS |
1156 | { |
1157 | char *exec_file = get_exec_file (0); | |
1158 | if (exec_file == 0) | |
1159 | exec_file = ""; | |
02cc9f49 CV |
1160 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1161 | current_event.dwProcessId); | |
c906108c SS |
1162 | gdb_flush (gdb_stdout); |
1163 | } | |
39f77062 | 1164 | inferior_ptid = null_ptid; |
c906108c SS |
1165 | unpush_target (&child_ops); |
1166 | } | |
1167 | ||
1168 | /* Print status information about what we're accessing. */ | |
1169 | ||
1170 | static void | |
29fe111d | 1171 | child_files_info (struct target_ops *ignore ATTRIBUTE_UNUSED) |
c906108c SS |
1172 | { |
1173 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1174 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
1175 | } |
1176 | ||
1177 | /* ARGSUSED */ | |
1178 | static void | |
29fe111d | 1179 | child_open (char *arg ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
c906108c SS |
1180 | { |
1181 | error ("Use the \"run\" command to start a Unix child process."); | |
1182 | } | |
1183 | ||
39f77062 | 1184 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
c906108c SS |
1185 | EXEC_FILE is the file to run. |
1186 | ALLARGS is a string containing the arguments to the program. | |
1187 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1188 | ||
1189 | static void | |
fba45db2 | 1190 | child_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c SS |
1191 | { |
1192 | char real_path[MAXPATHLEN]; | |
1193 | char *winenv; | |
1194 | char *temp; | |
c5aa993b | 1195 | int envlen; |
c906108c | 1196 | int i; |
c906108c SS |
1197 | STARTUPINFO si; |
1198 | PROCESS_INFORMATION pi; | |
c906108c SS |
1199 | BOOL ret; |
1200 | DWORD flags; | |
1201 | char *args; | |
1202 | ||
1203 | if (!exec_file) | |
450005e7 | 1204 | error ("No executable specified, use `target exec'.\n"); |
c906108c SS |
1205 | |
1206 | memset (&si, 0, sizeof (si)); | |
1207 | si.cb = sizeof (si); | |
1208 | ||
29fe111d | 1209 | cygwin_conv_to_win32_path (exec_file, real_path); |
c906108c SS |
1210 | |
1211 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1212 | ||
1213 | if (new_group) | |
1214 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1215 | ||
1216 | if (new_console) | |
1217 | flags |= CREATE_NEW_CONSOLE; | |
1218 | ||
1219 | args = alloca (strlen (real_path) + strlen (allargs) + 2); | |
1220 | ||
1221 | strcpy (args, real_path); | |
1222 | ||
1223 | strcat (args, " "); | |
1224 | strcat (args, allargs); | |
1225 | ||
1226 | /* Prepare the environment vars for CreateProcess. */ | |
1227 | { | |
1228 | /* This code use to assume all env vars were file names and would | |
1229 | translate them all to win32 style. That obviously doesn't work in the | |
1230 | general case. The current rule is that we only translate PATH. | |
1231 | We need to handle PATH because we're about to call CreateProcess and | |
1232 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1233 | in both posix and win32 environments. cygwin.dll will change it back | |
1234 | to posix style if necessary. */ | |
1235 | ||
1236 | static const char *conv_path_names[] = | |
c5aa993b JM |
1237 | { |
1238 | "PATH=", | |
1239 | 0 | |
1240 | }; | |
c906108c SS |
1241 | |
1242 | /* CreateProcess takes the environment list as a null terminated set of | |
1243 | strings (i.e. two nulls terminate the list). */ | |
1244 | ||
1245 | /* Get total size for env strings. */ | |
1246 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1247 | { | |
1248 | int j, len; | |
1249 | ||
1250 | for (j = 0; conv_path_names[j]; j++) | |
1251 | { | |
1252 | len = strlen (conv_path_names[j]); | |
1253 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1254 | { | |
29fe111d | 1255 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c | 1256 | envlen += len |
29fe111d | 1257 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
c906108c SS |
1258 | else |
1259 | envlen += strlen (env[i]) + 1; | |
1260 | break; | |
1261 | } | |
1262 | } | |
1263 | if (conv_path_names[j] == NULL) | |
1264 | envlen += strlen (env[i]) + 1; | |
1265 | } | |
1266 | ||
1267 | winenv = alloca (envlen + 1); | |
1268 | ||
1269 | /* Copy env strings into new buffer. */ | |
1270 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) | |
1271 | { | |
1272 | int j, len; | |
1273 | ||
1274 | for (j = 0; conv_path_names[j]; j++) | |
1275 | { | |
1276 | len = strlen (conv_path_names[j]); | |
1277 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1278 | { | |
29fe111d | 1279 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c SS |
1280 | { |
1281 | memcpy (temp, env[i], len); | |
29fe111d | 1282 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
c906108c SS |
1283 | } |
1284 | else | |
1285 | strcpy (temp, env[i]); | |
1286 | break; | |
1287 | } | |
1288 | } | |
1289 | if (conv_path_names[j] == NULL) | |
1290 | strcpy (temp, env[i]); | |
1291 | ||
1292 | temp += strlen (temp) + 1; | |
1293 | } | |
1294 | ||
1295 | /* Final nil string to terminate new env. */ | |
1296 | *temp = 0; | |
1297 | } | |
1298 | ||
1299 | ret = CreateProcess (0, | |
c5aa993b | 1300 | args, /* command line */ |
c906108c SS |
1301 | NULL, /* Security */ |
1302 | NULL, /* thread */ | |
1303 | TRUE, /* inherit handles */ | |
1304 | flags, /* start flags */ | |
1305 | winenv, | |
1306 | NULL, /* current directory */ | |
1307 | &si, | |
1308 | &pi); | |
1309 | if (!ret) | |
c5aa993b | 1310 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
c906108c | 1311 | |
700b351b CF |
1312 | CloseHandle (pi.hThread); |
1313 | CloseHandle (pi.hProcess); | |
9d3789f7 | 1314 | do_initial_child_stuff (pi.dwProcessId); |
ed9a39eb | 1315 | |
8e860359 | 1316 | /* child_continue (DBG_CONTINUE, -1); */ |
c2d11a7d | 1317 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
c906108c SS |
1318 | } |
1319 | ||
1320 | static void | |
fba45db2 | 1321 | child_mourn_inferior (void) |
c906108c | 1322 | { |
8a892701 | 1323 | (void) child_continue (DBG_CONTINUE, -1); |
c906108c SS |
1324 | unpush_target (&child_ops); |
1325 | generic_mourn_inferior (); | |
1326 | } | |
1327 | ||
1328 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
1329 | ^C on the controlling terminal. */ | |
1330 | ||
1331 | static void | |
fba45db2 | 1332 | child_stop (void) |
c906108c SS |
1333 | { |
1334 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); | |
c2d11a7d | 1335 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
c5aa993b | 1336 | registers_changed (); /* refresh register state */ |
c906108c SS |
1337 | } |
1338 | ||
1339 | int | |
1340 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
56c40d46 | 1341 | int write, struct mem_attrib *mem ATTRIBUTE_UNUSED, |
aea02b6b | 1342 | struct target_ops *target ATTRIBUTE_UNUSED) |
c906108c SS |
1343 | { |
1344 | DWORD done; | |
1345 | if (write) | |
1346 | { | |
29fe111d CF |
1347 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1348 | len, (DWORD) memaddr)); | |
c906108c SS |
1349 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1350 | len, &done); | |
1351 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
1352 | } | |
1353 | else | |
1354 | { | |
29fe111d CF |
1355 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1356 | len, (DWORD) memaddr)); | |
c906108c SS |
1357 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1358 | &done); | |
1359 | } | |
1360 | return done; | |
1361 | } | |
1362 | ||
1363 | void | |
1364 | child_kill_inferior (void) | |
1365 | { | |
1366 | CHECK (TerminateProcess (current_process_handle, 0)); | |
1367 | ||
1368 | for (;;) | |
1369 | { | |
8a892701 | 1370 | if (!child_continue (DBG_CONTINUE, -1)) |
c906108c SS |
1371 | break; |
1372 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
1373 | break; | |
1374 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
1375 | break; | |
1376 | } | |
1377 | ||
1378 | CHECK (CloseHandle (current_process_handle)); | |
1379 | ||
1380 | /* this may fail in an attached process so don't check. */ | |
1381 | (void) CloseHandle (current_thread->h); | |
c5aa993b | 1382 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
c906108c SS |
1383 | } |
1384 | ||
1385 | void | |
39f77062 | 1386 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c | 1387 | { |
c906108c | 1388 | thread_info *th; |
8a892701 | 1389 | DWORD continue_status = last_sig > 0 && last_sig < NSIG ? |
8e860359 | 1390 | DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE; |
39f77062 | 1391 | int pid = PIDGET (ptid); |
8a892701 CF |
1392 | |
1393 | last_sig = 0; | |
c906108c SS |
1394 | |
1395 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", | |
1396 | pid, step, sig)); | |
1397 | ||
1398 | /* Get context for currently selected thread */ | |
1399 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1400 | if (th) |
c906108c | 1401 | { |
450005e7 CF |
1402 | if (step) |
1403 | { | |
1404 | /* Single step by setting t bit */ | |
1405 | child_fetch_inferior_registers (PS_REGNUM); | |
1406 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1407 | } | |
c906108c | 1408 | |
450005e7 CF |
1409 | if (th->context.ContextFlags) |
1410 | { | |
1411 | CHECK (SetThreadContext (th->h, &th->context)); | |
1412 | th->context.ContextFlags = 0; | |
1413 | } | |
c906108c SS |
1414 | } |
1415 | ||
1416 | /* Allow continuing with the same signal that interrupted us. | |
1417 | Otherwise complain. */ | |
c906108c | 1418 | |
8a892701 | 1419 | child_continue (continue_status, pid); |
c906108c SS |
1420 | } |
1421 | ||
1422 | static void | |
fba45db2 | 1423 | child_prepare_to_store (void) |
c906108c SS |
1424 | { |
1425 | /* Do nothing, since we can store individual regs */ | |
1426 | } | |
1427 | ||
1428 | static int | |
fba45db2 | 1429 | child_can_run (void) |
c906108c SS |
1430 | { |
1431 | return 1; | |
1432 | } | |
1433 | ||
1434 | static void | |
9d3789f7 | 1435 | child_close (int x ATTRIBUTE_UNUSED) |
c906108c | 1436 | { |
39f77062 KB |
1437 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
1438 | PIDGET (inferior_ptid))); | |
c906108c SS |
1439 | } |
1440 | ||
c5aa993b | 1441 | struct target_ops child_ops; |
c906108c | 1442 | |
c5aa993b JM |
1443 | static void |
1444 | init_child_ops (void) | |
c906108c | 1445 | { |
c5aa993b JM |
1446 | child_ops.to_shortname = "child"; |
1447 | child_ops.to_longname = "Win32 child process"; | |
1448 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1449 | child_ops.to_open = child_open; | |
1450 | child_ops.to_close = child_close; | |
1451 | child_ops.to_attach = child_attach; | |
1452 | child_ops.to_detach = child_detach; | |
1453 | child_ops.to_resume = child_resume; | |
1454 | child_ops.to_wait = child_wait; | |
1455 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1456 | child_ops.to_store_registers = child_store_inferior_registers; | |
1457 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1458 | child_ops.to_xfer_memory = child_xfer_memory; | |
1459 | child_ops.to_files_info = child_files_info; | |
1460 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1461 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1462 | child_ops.to_terminal_init = terminal_init_inferior; | |
1463 | child_ops.to_terminal_inferior = terminal_inferior; | |
1464 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1465 | child_ops.to_terminal_ours = terminal_ours; | |
1466 | child_ops.to_terminal_info = child_terminal_info; | |
1467 | child_ops.to_kill = child_kill_inferior; | |
1468 | child_ops.to_load = 0; | |
1469 | child_ops.to_lookup_symbol = 0; | |
1470 | child_ops.to_create_inferior = child_create_inferior; | |
1471 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1472 | child_ops.to_can_run = child_can_run; | |
1473 | child_ops.to_notice_signals = 0; | |
1474 | child_ops.to_thread_alive = win32_child_thread_alive; | |
ed9a39eb | 1475 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
c5aa993b JM |
1476 | child_ops.to_stop = child_stop; |
1477 | child_ops.to_stratum = process_stratum; | |
1478 | child_ops.DONT_USE = 0; | |
1479 | child_ops.to_has_all_memory = 1; | |
1480 | child_ops.to_has_memory = 1; | |
1481 | child_ops.to_has_stack = 1; | |
1482 | child_ops.to_has_registers = 1; | |
1483 | child_ops.to_has_execution = 1; | |
1484 | child_ops.to_sections = 0; | |
1485 | child_ops.to_sections_end = 0; | |
1486 | child_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
1487 | } |
1488 | ||
1489 | void | |
fba45db2 | 1490 | _initialize_inftarg (void) |
c906108c | 1491 | { |
fa58ee11 EZ |
1492 | struct cmd_list_element *c; |
1493 | ||
c5aa993b | 1494 | init_child_ops (); |
c906108c | 1495 | |
fa58ee11 EZ |
1496 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1497 | "Load dll library symbols from FILE."); | |
1498 | c->completer = filename_completer; | |
450005e7 CF |
1499 | |
1500 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
1501 | ||
1502 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, | |
8e860359 CF |
1503 | (char *) &new_console, |
1504 | "Set creation of new console when creating child process.", | |
1505 | &setlist), | |
1506 | &showlist); | |
c906108c | 1507 | |
450005e7 | 1508 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1509 | (char *) &new_group, |
1510 | "Set creation of new group when creating child process.", | |
1511 | &setlist), | |
1512 | &showlist); | |
c906108c | 1513 | |
450005e7 | 1514 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1515 | (char *) &debug_exec, |
1516 | "Set whether to display execution in child process.", | |
1517 | &setlist), | |
1518 | &showlist); | |
c906108c | 1519 | |
450005e7 | 1520 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1521 | (char *) &debug_events, |
1522 | "Set whether to display kernel events in child process.", | |
1523 | &setlist), | |
1524 | &showlist); | |
c906108c | 1525 | |
450005e7 | 1526 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1527 | (char *) &debug_memory, |
1528 | "Set whether to display memory accesses in child process.", | |
1529 | &setlist), | |
1530 | &showlist); | |
c906108c | 1531 | |
450005e7 | 1532 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1533 | (char *) &debug_exceptions, |
1534 | "Set whether to display kernel exceptions in child process.", | |
1535 | &setlist), | |
1536 | &showlist); | |
c906108c | 1537 | |
450005e7 CF |
1538 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1539 | add_info_alias ("sharedlibrary", "dll", 1); | |
1540 | ||
c906108c SS |
1541 | add_target (&child_ops); |
1542 | } | |
1543 | ||
1544 | /* Determine if the thread referenced by "pid" is alive | |
1545 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1546 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1547 | static int | |
39f77062 | 1548 | win32_child_thread_alive (ptid_t ptid) |
c906108c | 1549 | { |
39f77062 KB |
1550 | int pid = PIDGET (ptid); |
1551 | ||
c5aa993b JM |
1552 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1553 | FALSE : TRUE; | |
c906108c SS |
1554 | } |
1555 | ||
1556 | /* Convert pid to printable format. */ | |
1557 | char * | |
39f77062 | 1558 | cygwin_pid_to_str (ptid_t ptid) |
c906108c SS |
1559 | { |
1560 | static char buf[80]; | |
39f77062 KB |
1561 | int pid = PIDGET (ptid); |
1562 | ||
29fe111d | 1563 | if ((DWORD) pid == current_event.dwProcessId) |
c906108c SS |
1564 | sprintf (buf, "process %d", pid); |
1565 | else | |
29fe111d | 1566 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
c906108c SS |
1567 | return buf; |
1568 | } | |
8e860359 CF |
1569 | |
1570 | static int | |
1571 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1572 | { | |
1573 | struct objfile *objfile; | |
1574 | char *objfile_basename; | |
1575 | const char *dll_basename; | |
1576 | ||
1577 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1578 | dll_basename = dll_name; | |
1579 | else | |
1580 | dll_basename++; | |
1581 | ||
1582 | ALL_OBJFILES (objfile) | |
1583 | { | |
1584 | objfile_basename = strrchr (objfile->name, '/'); | |
1585 | ||
1586 | if (objfile_basename && | |
1587 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1588 | { | |
1589 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1590 | base_addr, dll_name); | |
1591 | goto out; | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 1596 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
1597 | |
1598 | out: | |
1599 | return 1; | |
1600 | } | |
1601 | ||
1602 | typedef struct | |
1603 | { | |
1604 | struct target_ops *target; | |
1605 | bfd_vma addr; | |
1606 | } | |
1607 | map_code_section_args; | |
1608 | ||
1609 | static void | |
554cb486 | 1610 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1611 | { |
1612 | int old; | |
1613 | int update_coreops; | |
1614 | struct section_table *new_target_sect_ptr; | |
1615 | ||
1616 | map_code_section_args *args = (map_code_section_args *) obj; | |
1617 | struct target_ops *target = args->target; | |
1618 | if (sect->flags & SEC_CODE) | |
1619 | { | |
1620 | update_coreops = core_ops.to_sections == target->to_sections; | |
1621 | ||
1622 | if (target->to_sections) | |
1623 | { | |
1624 | old = target->to_sections_end - target->to_sections; | |
1625 | target->to_sections = (struct section_table *) | |
1626 | xrealloc ((char *) target->to_sections, | |
1627 | (sizeof (struct section_table)) * (1 + old)); | |
1628 | } | |
1629 | else | |
1630 | { | |
1631 | old = 0; | |
1632 | target->to_sections = (struct section_table *) | |
1633 | xmalloc ((sizeof (struct section_table))); | |
1634 | } | |
1635 | target->to_sections_end = target->to_sections + (1 + old); | |
1636 | ||
1637 | /* Update the to_sections field in the core_ops structure | |
1638 | if needed. */ | |
1639 | if (update_coreops) | |
1640 | { | |
1641 | core_ops.to_sections = target->to_sections; | |
1642 | core_ops.to_sections_end = target->to_sections_end; | |
1643 | } | |
1644 | new_target_sect_ptr = target->to_sections + old; | |
1645 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
1646 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
1647 | bfd_section_size (abfd, sect);; | |
1648 | new_target_sect_ptr->the_bfd_section = sect; | |
1649 | new_target_sect_ptr->bfd = abfd; | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | static int | |
1654 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
1655 | { | |
1656 | bfd *dll_bfd; | |
1657 | map_code_section_args map_args; | |
1658 | asection *lowest_sect; | |
1659 | char *name; | |
1660 | if (dll_name == NULL || target == NULL) | |
1661 | return 0; | |
66ed1d85 | 1662 | name = xstrdup (dll_name); |
8e860359 CF |
1663 | dll_bfd = bfd_openr (name, "pei-i386"); |
1664 | if (dll_bfd == NULL) | |
1665 | return 0; | |
1666 | ||
1667 | if (bfd_check_format (dll_bfd, bfd_object)) | |
1668 | { | |
1669 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
1670 | if (lowest_sect == NULL) | |
1671 | return 0; | |
1672 | map_args.target = target; | |
1673 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
1674 | ||
554cb486 | 1675 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
1676 | } |
1677 | ||
1678 | return 1; | |
1679 | } | |
1680 | ||
1681 | static void | |
554cb486 | 1682 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1683 | { |
1684 | struct target_ops *target = (struct target_ops *) obj; | |
1685 | ||
1686 | DWORD base_addr; | |
1687 | ||
1688 | int dll_name_size; | |
1689 | char *dll_name = NULL; | |
1690 | char *buf = NULL; | |
1691 | struct win32_pstatus *pstatus; | |
1692 | char *p; | |
1693 | ||
1694 | if (strncmp (sect->name, ".module", 7)) | |
1695 | return; | |
1696 | ||
1697 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
1698 | if (!buf) | |
1699 | { | |
1700 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1701 | goto out; | |
1702 | } | |
1703 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
1704 | goto out; | |
1705 | ||
1706 | pstatus = (struct win32_pstatus *) buf; | |
1707 | ||
1708 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
1709 | dll_name_size = pstatus->data.module_info.module_name_size; | |
1710 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
1711 | goto out; | |
1712 | ||
1713 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
1714 | if (!dll_name) | |
1715 | { | |
1716 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1717 | goto out; | |
1718 | } | |
1719 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
1720 | ||
1721 | while ((p = strchr (dll_name, '\\'))) | |
1722 | *p = '/'; | |
1723 | ||
1724 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
1725 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
1726 | ||
1727 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
1728 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
1729 | ||
1730 | out: | |
1731 | if (buf) | |
b8c9b27d | 1732 | xfree (buf); |
8e860359 | 1733 | if (dll_name) |
b8c9b27d | 1734 | xfree (dll_name); |
8e860359 CF |
1735 | return; |
1736 | } | |
1737 | ||
1738 | void | |
990f9fe3 | 1739 | child_solib_add (char *filename ATTRIBUTE_UNUSED, int from_tty, struct target_ops *target, int readsyms) |
8e860359 | 1740 | { |
990f9fe3 FF |
1741 | if (!readsyms) |
1742 | return; | |
8e860359 CF |
1743 | if (core_bfd) |
1744 | { | |
1745 | child_clear_solibs (); | |
1746 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
1747 | } | |
1748 | else | |
1749 | { | |
1750 | if (solib_end && solib_end->name) | |
d3ff4a77 CF |
1751 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
1752 | solib_end->load_addr); | |
8e860359 CF |
1753 | } |
1754 | } | |
1755 | ||
1756 | static void | |
1757 | fetch_elf_core_registers (char *core_reg_sect, | |
1758 | unsigned core_reg_size, | |
1759 | int which, | |
1760 | CORE_ADDR reg_addr) | |
1761 | { | |
1762 | int r; | |
1763 | if (core_reg_size < sizeof (CONTEXT)) | |
1764 | { | |
1765 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
1766 | return; | |
1767 | } | |
1768 | for (r = 0; r < NUM_REGS; r++) | |
1769 | supply_register (r, core_reg_sect + mappings[r]); | |
1770 | } | |
1771 | ||
1772 | static struct core_fns win32_elf_core_fns = | |
1773 | { | |
1774 | bfd_target_elf_flavour, | |
1775 | default_check_format, | |
1776 | default_core_sniffer, | |
1777 | fetch_elf_core_registers, | |
1778 | NULL | |
1779 | }; | |
1780 | ||
1781 | void | |
0613c401 | 1782 | _initialize_core_win32 (void) |
8e860359 CF |
1783 | { |
1784 | add_core_fns (&win32_elf_core_fns); | |
1785 | } | |
2a3d5645 CF |
1786 | |
1787 | void | |
1788 | _initialize_check_for_gdb_ini (void) | |
1789 | { | |
1790 | char *homedir; | |
1791 | if (inhibit_gdbinit) | |
1792 | return; | |
1793 | ||
1794 | homedir = getenv ("HOME"); | |
1795 | if (homedir) | |
1796 | { | |
1797 | char *p; | |
1798 | char *oldini = (char *) alloca (strlen (homedir) + | |
1799 | sizeof ("/gdb.ini")); | |
1800 | strcpy (oldini, homedir); | |
1801 | p = strchr (oldini, '\0'); | |
1802 | if (p > oldini && p[-1] != '/') | |
1803 | *p++ = '/'; | |
1804 | strcpy (p, "gdb.ini"); | |
1805 | if (access (oldini, 0) == 0) | |
1806 | { | |
1807 | int len = strlen (oldini); | |
1808 | char *newini = alloca (len + 1); | |
1809 | sprintf (newini, "%.*s.gdbinit", len - (sizeof ("gdb.ini") - 1), oldini); | |
1810 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); | |
1811 | } | |
1812 | } | |
1813 | } |