Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
0a65a603 AC |
2 | |
3 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free | |
4 | Software Foundation, Inc. | |
5 | ||
e6433c28 | 6 | Contributed by Cygnus Solutions, A Red Hat Company. |
c906108c SS |
7 | |
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without eve nthe implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
c5aa993b | 22 | Foundation, Inc., 59 Temple Place - Suite 330, |
4e052eda | 23 | Boston, MA 02111-1307, USA. */ |
c906108c SS |
24 | |
25 | /* by Steve Chamberlain, sac@cygnus.com */ | |
26 | ||
27 | /* We assume we're being built with and will be used for cygwin. */ | |
28 | ||
29 | #include "defs.h" | |
97da3b20 | 30 | #include "tm.h" /* required for SSE registers */ |
c906108c SS |
31 | #include "frame.h" /* required by inferior.h */ |
32 | #include "inferior.h" | |
33 | #include "target.h" | |
c906108c SS |
34 | #include "gdbcore.h" |
35 | #include "command.h" | |
fa58ee11 | 36 | #include "completer.h" |
4e052eda | 37 | #include "regcache.h" |
2a3d5645 | 38 | #include "top.h" |
c25b74ac | 39 | #include "i386-tdep.h" |
c906108c SS |
40 | #include <signal.h> |
41 | #include <sys/types.h> | |
42 | #include <fcntl.h> | |
43 | #include <stdlib.h> | |
c906108c | 44 | #include <windows.h> |
c2d11a7d | 45 | #include <imagehlp.h> |
29fe111d | 46 | #include <sys/cygwin.h> |
c906108c SS |
47 | |
48 | #include "buildsym.h" | |
49 | #include "symfile.h" | |
50 | #include "objfiles.h" | |
51 | #include "gdb_string.h" | |
52 | #include "gdbthread.h" | |
53 | #include "gdbcmd.h" | |
54 | #include <sys/param.h> | |
c2d11a7d | 55 | #include <unistd.h> |
c906108c | 56 | |
7a292a7a | 57 | /* The ui's event loop. */ |
507f3c78 | 58 | extern int (*ui_loop_hook) (int signo); |
7a292a7a SS |
59 | |
60 | /* If we're not using the old Cygwin header file set, define the | |
61 | following which never should have been in the generic Win32 API | |
62 | headers in the first place since they were our own invention... */ | |
63 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 64 | enum |
8e860359 CF |
65 | { |
66 | FLAG_TRACE_BIT = 0x100, | |
67 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
68 | }; | |
7a292a7a | 69 | #endif |
8e860359 CF |
70 | #include <sys/procfs.h> |
71 | #include <psapi.h> | |
7a292a7a | 72 | |
97da3b20 | 73 | #ifdef HAVE_SSE_REGS |
3bccec63 | 74 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_EXTENDED_REGISTERS |
97da3b20 CF |
75 | #else |
76 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | |
77 | #endif | |
78 | ||
79 | ||
c906108c SS |
80 | /* The string sent by cygwin when it processes a signal. |
81 | FIXME: This should be in a cygwin include file. */ | |
82 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
83 | ||
29fe111d | 84 | #define CHECK(x) check (x, __FILE__,__LINE__) |
c906108c SS |
85 | #define DEBUG_EXEC(x) if (debug_exec) printf x |
86 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
87 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
88 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
89 | ||
90 | /* Forward declaration */ | |
91 | extern struct target_ops child_ops; | |
92 | ||
a14ed312 | 93 | static void child_stop (void); |
39f77062 | 94 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 95 | void child_kill_inferior (void); |
c906108c | 96 | |
8a892701 CF |
97 | static int last_sig = 0; /* Set if a signal was received from the |
98 | debugged process */ | |
c906108c SS |
99 | /* Thread information structure used to track information that is |
100 | not available in gdb's thread structure. */ | |
101 | typedef struct thread_info_struct | |
c5aa993b JM |
102 | { |
103 | struct thread_info_struct *next; | |
104 | DWORD id; | |
105 | HANDLE h; | |
106 | char *name; | |
107 | int suspend_count; | |
108 | CONTEXT context; | |
c2d11a7d | 109 | STACKFRAME sf; |
8e860359 CF |
110 | } |
111 | thread_info; | |
c2d11a7d | 112 | |
29fe111d | 113 | static thread_info thread_head; |
c906108c | 114 | |
c906108c SS |
115 | /* The process and thread handles for the above context. */ |
116 | ||
117 | static DEBUG_EVENT current_event; /* The current debug event from | |
118 | WaitForDebugEvent */ | |
119 | static HANDLE current_process_handle; /* Currently executing process */ | |
120 | static thread_info *current_thread; /* Info on currently selected thread */ | |
c5aa993b | 121 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
c906108c SS |
122 | |
123 | /* Counts of things. */ | |
124 | static int exception_count = 0; | |
125 | static int event_count = 0; | |
126 | ||
127 | /* User options. */ | |
128 | static int new_console = 0; | |
c2d11a7d | 129 | static int new_group = 1; |
c5aa993b JM |
130 | static int debug_exec = 0; /* show execution */ |
131 | static int debug_events = 0; /* show events from kernel */ | |
132 | static int debug_memory = 0; /* show target memory accesses */ | |
c906108c SS |
133 | static int debug_exceptions = 0; /* show target exceptions */ |
134 | ||
135 | /* This vector maps GDB's idea of a register's number into an address | |
136 | in the win32 exception context vector. | |
137 | ||
138 | It also contains the bit mask needed to load the register in question. | |
139 | ||
140 | One day we could read a reg, we could inspect the context we | |
141 | already have loaded, if it doesn't have the bit set that we need, | |
142 | we read that set of registers in using GetThreadContext. If the | |
143 | context already contains what we need, we just unpack it. Then to | |
144 | write a register, first we have to ensure that the context contains | |
145 | the other regs of the group, and then we copy the info in and set | |
146 | out bit. */ | |
147 | ||
148 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) | |
149 | static const int mappings[] = | |
150 | { | |
c5aa993b JM |
151 | context_offset (Eax), |
152 | context_offset (Ecx), | |
153 | context_offset (Edx), | |
154 | context_offset (Ebx), | |
155 | context_offset (Esp), | |
156 | context_offset (Ebp), | |
157 | context_offset (Esi), | |
158 | context_offset (Edi), | |
159 | context_offset (Eip), | |
160 | context_offset (EFlags), | |
161 | context_offset (SegCs), | |
162 | context_offset (SegSs), | |
163 | context_offset (SegDs), | |
164 | context_offset (SegEs), | |
165 | context_offset (SegFs), | |
166 | context_offset (SegGs), | |
167 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
168 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
169 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
170 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
171 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
172 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
173 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
174 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
c2d11a7d JM |
175 | context_offset (FloatSave.ControlWord), |
176 | context_offset (FloatSave.StatusWord), | |
177 | context_offset (FloatSave.TagWord), | |
178 | context_offset (FloatSave.ErrorSelector), | |
179 | context_offset (FloatSave.ErrorOffset), | |
180 | context_offset (FloatSave.DataSelector), | |
181 | context_offset (FloatSave.DataOffset), | |
ed9a39eb | 182 | context_offset (FloatSave.ErrorSelector) |
97da3b20 CF |
183 | #ifdef HAVE_SSE_REGS |
184 | /* XMM0-7 */ , | |
441532d7 PM |
185 | context_offset (ExtendedRegisters[10*16]), |
186 | context_offset (ExtendedRegisters[11*16]), | |
187 | context_offset (ExtendedRegisters[12*16]), | |
188 | context_offset (ExtendedRegisters[13*16]), | |
189 | context_offset (ExtendedRegisters[14*16]), | |
190 | context_offset (ExtendedRegisters[15*16]), | |
191 | context_offset (ExtendedRegisters[16*16]), | |
192 | context_offset (ExtendedRegisters[17*16]), | |
193 | /* MXCSR */ | |
194 | context_offset (ExtendedRegisters[24]) | |
97da3b20 | 195 | #endif |
c906108c SS |
196 | }; |
197 | ||
ed9a39eb JM |
198 | #undef context_offset |
199 | ||
c906108c SS |
200 | /* This vector maps the target's idea of an exception (extracted |
201 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
202 | ||
203 | struct xlate_exception | |
204 | { | |
205 | int them; | |
206 | enum target_signal us; | |
207 | }; | |
208 | ||
209 | static const struct xlate_exception | |
210 | xlate[] = | |
211 | { | |
212 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
213 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, | |
214 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, | |
215 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
216 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
217 | {-1, -1}}; | |
218 | ||
219 | /* Find a thread record given a thread id. | |
220 | If get_context then also retrieve the context for this | |
221 | thread. */ | |
222 | static thread_info * | |
223 | thread_rec (DWORD id, int get_context) | |
224 | { | |
225 | thread_info *th; | |
226 | ||
c5aa993b | 227 | for (th = &thread_head; (th = th->next) != NULL;) |
c906108c SS |
228 | if (th->id == id) |
229 | { | |
230 | if (!th->suspend_count && get_context) | |
231 | { | |
8a892701 | 232 | if (get_context > 0 && id != current_event.dwThreadId) |
c906108c SS |
233 | th->suspend_count = SuspendThread (th->h) + 1; |
234 | else if (get_context < 0) | |
235 | th->suspend_count = -1; | |
236 | ||
97da3b20 | 237 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
c906108c SS |
238 | GetThreadContext (th->h, &th->context); |
239 | } | |
240 | return th; | |
241 | } | |
242 | ||
243 | return NULL; | |
244 | } | |
245 | ||
246 | /* Add a thread to the thread list */ | |
247 | static thread_info * | |
c5aa993b | 248 | child_add_thread (DWORD id, HANDLE h) |
c906108c SS |
249 | { |
250 | thread_info *th; | |
251 | ||
252 | if ((th = thread_rec (id, FALSE))) | |
253 | return th; | |
254 | ||
255 | th = (thread_info *) xmalloc (sizeof (*th)); | |
c5aa993b | 256 | memset (th, 0, sizeof (*th)); |
c906108c SS |
257 | th->id = id; |
258 | th->h = h; | |
259 | th->next = thread_head.next; | |
260 | thread_head.next = th; | |
39f77062 | 261 | add_thread (pid_to_ptid (id)); |
c906108c SS |
262 | return th; |
263 | } | |
264 | ||
265 | /* Clear out any old thread list and reintialize it to a | |
266 | pristine state. */ | |
267 | static void | |
fba45db2 | 268 | child_init_thread_list (void) |
c906108c SS |
269 | { |
270 | thread_info *th = &thread_head; | |
271 | ||
272 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
273 | init_thread_list (); | |
274 | while (th->next != NULL) | |
275 | { | |
276 | thread_info *here = th->next; | |
277 | th->next = here->next; | |
278 | (void) CloseHandle (here->h); | |
b8c9b27d | 279 | xfree (here); |
c906108c SS |
280 | } |
281 | } | |
282 | ||
283 | /* Delete a thread from the list of threads */ | |
284 | static void | |
285 | child_delete_thread (DWORD id) | |
286 | { | |
287 | thread_info *th; | |
288 | ||
289 | if (info_verbose) | |
39f77062 KB |
290 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
291 | delete_thread (pid_to_ptid (id)); | |
c906108c SS |
292 | |
293 | for (th = &thread_head; | |
294 | th->next != NULL && th->next->id != id; | |
295 | th = th->next) | |
296 | continue; | |
297 | ||
298 | if (th->next != NULL) | |
299 | { | |
300 | thread_info *here = th->next; | |
301 | th->next = here->next; | |
302 | CloseHandle (here->h); | |
b8c9b27d | 303 | xfree (here); |
c906108c SS |
304 | } |
305 | } | |
306 | ||
307 | static void | |
308 | check (BOOL ok, const char *file, int line) | |
309 | { | |
310 | if (!ok) | |
29fe111d | 311 | printf_filtered ("error return %s:%d was %lu\n", file, line, GetLastError ()); |
c906108c SS |
312 | } |
313 | ||
314 | static void | |
315 | do_child_fetch_inferior_registers (int r) | |
316 | { | |
c2d11a7d JM |
317 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
318 | long l; | |
319 | if (r == FCS_REGNUM) | |
320 | { | |
8e860359 | 321 | l = *((long *) context_offset) & 0xffff; |
c2d11a7d JM |
322 | supply_register (r, (char *) &l); |
323 | } | |
324 | else if (r == FOP_REGNUM) | |
325 | { | |
8e860359 | 326 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
c2d11a7d JM |
327 | supply_register (r, (char *) &l); |
328 | } | |
329 | else if (r >= 0) | |
ed9a39eb | 330 | supply_register (r, context_offset); |
c906108c SS |
331 | else |
332 | { | |
333 | for (r = 0; r < NUM_REGS; r++) | |
334 | do_child_fetch_inferior_registers (r); | |
335 | } | |
336 | } | |
337 | ||
338 | static void | |
339 | child_fetch_inferior_registers (int r) | |
340 | { | |
39f77062 | 341 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
342 | do_child_fetch_inferior_registers (r); |
343 | } | |
344 | ||
345 | static void | |
346 | do_child_store_inferior_registers (int r) | |
347 | { | |
348 | if (r >= 0) | |
349 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
350 | else | |
351 | { | |
352 | for (r = 0; r < NUM_REGS; r++) | |
353 | do_child_store_inferior_registers (r); | |
354 | } | |
355 | } | |
356 | ||
357 | /* Store a new register value into the current thread context */ | |
358 | static void | |
359 | child_store_inferior_registers (int r) | |
360 | { | |
39f77062 | 361 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
362 | do_child_store_inferior_registers (r); |
363 | } | |
364 | ||
c2d11a7d JM |
365 | static int psapi_loaded = 0; |
366 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
367 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
368 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
369 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
c2d11a7d | 370 | |
3bccec63 | 371 | int |
8e860359 | 372 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
c2d11a7d JM |
373 | { |
374 | DWORD len; | |
375 | MODULEINFO mi; | |
376 | int i; | |
8e860359 CF |
377 | HMODULE dh_buf[1]; |
378 | HMODULE *DllHandle = dh_buf; | |
c2d11a7d JM |
379 | DWORD cbNeeded; |
380 | BOOL ok; | |
381 | ||
382 | if (!psapi_loaded || | |
8e860359 CF |
383 | psapi_EnumProcessModules == NULL || |
384 | psapi_GetModuleInformation == NULL || | |
385 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d | 386 | { |
8e860359 CF |
387 | if (psapi_loaded) |
388 | goto failed; | |
c2d11a7d JM |
389 | psapi_loaded = 1; |
390 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
391 | if (!psapi_module_handle) | |
8e860359 CF |
392 | { |
393 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
394 | goto failed; | |
395 | } | |
396 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
c2d11a7d JM |
397 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
398 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
399 | "GetModuleFileNameExA"); |
400 | if (psapi_EnumProcessModules == NULL || | |
401 | psapi_GetModuleInformation == NULL || | |
402 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d JM |
403 | goto failed; |
404 | } | |
405 | ||
406 | cbNeeded = 0; | |
407 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
408 | DllHandle, |
409 | sizeof (HMODULE), | |
410 | &cbNeeded); | |
c2d11a7d JM |
411 | |
412 | if (!ok || !cbNeeded) | |
413 | goto failed; | |
414 | ||
8e860359 | 415 | DllHandle = (HMODULE *) alloca (cbNeeded); |
c2d11a7d JM |
416 | if (!DllHandle) |
417 | goto failed; | |
418 | ||
419 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
420 | DllHandle, |
421 | cbNeeded, | |
422 | &cbNeeded); | |
c2d11a7d JM |
423 | if (!ok) |
424 | goto failed; | |
425 | ||
29fe111d | 426 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
c2d11a7d JM |
427 | { |
428 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
429 | DllHandle[i], |
430 | &mi, | |
431 | sizeof (mi))) | |
c2d11a7d JM |
432 | error ("Can't get module info"); |
433 | ||
434 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
435 | DllHandle[i], |
436 | dll_name_ret, | |
437 | MAX_PATH); | |
c2d11a7d | 438 | if (len == 0) |
29fe111d | 439 | error ("Error getting dll name: %u\n", GetLastError ()); |
c2d11a7d JM |
440 | |
441 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
442 | return 1; | |
443 | } | |
444 | ||
445 | failed: | |
446 | dll_name_ret[0] = '\0'; | |
447 | return 0; | |
448 | } | |
449 | ||
450005e7 CF |
450 | /* Encapsulate the information required in a call to |
451 | symbol_file_add_args */ | |
8a892701 CF |
452 | struct safe_symbol_file_add_args |
453 | { | |
454 | char *name; | |
455 | int from_tty; | |
456 | struct section_addr_info *addrs; | |
457 | int mainline; | |
458 | int flags; | |
7c5c87c0 | 459 | struct ui_file *err, *out; |
8a892701 CF |
460 | struct objfile *ret; |
461 | }; | |
462 | ||
02e423b9 CF |
463 | /* Maintain a linked list of "so" information. */ |
464 | struct so_stuff | |
465 | { | |
d3ff4a77 | 466 | struct so_stuff *next; |
02e423b9 | 467 | DWORD load_addr; |
7470a420 | 468 | int loaded; |
d3ff4a77 | 469 | struct objfile *objfile; |
7470a420 CF |
470 | char name[1]; |
471 | } solib_start, *solib_end; | |
02e423b9 | 472 | |
450005e7 CF |
473 | /* Call symbol_file_add with stderr redirected. We don't care if there |
474 | are errors. */ | |
8a892701 CF |
475 | static int |
476 | safe_symbol_file_add_stub (void *argv) | |
477 | { | |
478 | #define p ((struct safe_symbol_file_add_args *)argv) | |
fefd0a37 | 479 | struct so_stuff *so = &solib_start; |
02e423b9 CF |
480 | |
481 | while ((so = so->next)) | |
7470a420 | 482 | if (so->loaded && strcasecmp (so->name, p->name) == 0) |
02e423b9 | 483 | return 0; |
8a892701 CF |
484 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
485 | return !!p->ret; | |
486 | #undef p | |
487 | } | |
488 | ||
450005e7 | 489 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 490 | static void |
7c5c87c0 | 491 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 492 | { |
8e860359 | 493 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 494 | gdb_flush (gdb_stderr); |
7c5c87c0 | 495 | gdb_flush (gdb_stdout); |
d3ff4a77 | 496 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 497 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 498 | gdb_stderr = sp->err; |
9d3789f7 | 499 | gdb_stdout = sp->out; |
8e860359 | 500 | #undef sp |
8a892701 CF |
501 | } |
502 | ||
450005e7 | 503 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
504 | static struct objfile * |
505 | safe_symbol_file_add (char *name, int from_tty, | |
506 | struct section_addr_info *addrs, | |
507 | int mainline, int flags) | |
8a892701 CF |
508 | { |
509 | struct safe_symbol_file_add_args p; | |
510 | struct cleanup *cleanup; | |
511 | ||
7c5c87c0 | 512 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 513 | |
7c5c87c0 CF |
514 | p.err = gdb_stderr; |
515 | p.out = gdb_stdout; | |
450005e7 | 516 | gdb_flush (gdb_stderr); |
7c5c87c0 | 517 | gdb_flush (gdb_stdout); |
d3ff4a77 | 518 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 519 | gdb_stdout = ui_file_new (); |
8a892701 CF |
520 | p.name = name; |
521 | p.from_tty = from_tty; | |
522 | p.addrs = addrs; | |
523 | p.mainline = mainline; | |
524 | p.flags = flags; | |
525 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
526 | ||
527 | do_cleanups (cleanup); | |
528 | return p.ret; | |
529 | } | |
530 | ||
450005e7 CF |
531 | /* Remember the maximum DLL length for printing in info dll command. */ |
532 | int max_dll_name_len; | |
533 | ||
8e860359 CF |
534 | static void |
535 | register_loaded_dll (const char *name, DWORD load_addr) | |
536 | { | |
537 | struct so_stuff *so; | |
7470a420 | 538 | char ppath[MAX_PATH + 1]; |
3f8ad85b CF |
539 | char buf[MAX_PATH + 1]; |
540 | char cwd[MAX_PATH + 1]; | |
541 | char *p; | |
542 | WIN32_FIND_DATA w32_fd; | |
543 | HANDLE h = FindFirstFile(name, &w32_fd); | |
544 | size_t len; | |
545 | ||
546 | FindClose (h); | |
547 | strcpy (buf, name); | |
548 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
549 | { | |
550 | p = strrchr (buf, '\\'); | |
551 | if (p) | |
552 | p[1] = '\0'; | |
553 | SetCurrentDirectory (buf); | |
554 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
555 | SetCurrentDirectory (cwd); | |
556 | } | |
557 | ||
558 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
559 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
560 | so->loaded = 0; | |
8e860359 | 561 | so->load_addr = load_addr; |
d3ff4a77 CF |
562 | so->next = NULL; |
563 | so->objfile = NULL; | |
7470a420 | 564 | strcpy (so->name, ppath); |
8e860359 CF |
565 | |
566 | solib_end->next = so; | |
567 | solib_end = so; | |
3f8ad85b CF |
568 | len = strlen (ppath); |
569 | if (len > max_dll_name_len) | |
570 | max_dll_name_len = len; | |
8e860359 CF |
571 | } |
572 | ||
c906108c SS |
573 | /* Wait for child to do something. Return pid of child, or -1 in case |
574 | of error; store status through argument pointer OURSTATUS. */ | |
c906108c | 575 | static int |
0a65a603 | 576 | handle_load_dll (void *dummy) |
c906108c | 577 | { |
c5aa993b | 578 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
c906108c SS |
579 | DWORD dll_name_ptr; |
580 | DWORD done; | |
581 | char dll_buf[MAX_PATH + 1]; | |
450005e7 | 582 | char *dll_name = NULL; |
450005e7 | 583 | char *p; |
c906108c | 584 | |
c5aa993b | 585 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 586 | |
c2d11a7d | 587 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 588 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 589 | |
c2d11a7d | 590 | dll_name = dll_buf; |
c906108c SS |
591 | |
592 | /* Attempt to read the name of the dll that was detected. | |
593 | This is documented to work only when actively debugging | |
594 | a program. It will not work for attached processes. */ | |
595 | if (dll_name == NULL || *dll_name == '\0') | |
596 | { | |
29fe111d | 597 | DWORD size = event->fUnicode ? sizeof (WCHAR) : sizeof (char); |
c906108c SS |
598 | int len = 0; |
599 | char b[2]; | |
600 | ||
601 | ReadProcessMemory (current_process_handle, | |
602 | (LPCVOID) event->lpImageName, | |
603 | (char *) &dll_name_ptr, | |
604 | sizeof (dll_name_ptr), &done); | |
605 | ||
606 | /* See if we could read the address of a string, and that the | |
3bccec63 | 607 | address isn't null. */ |
c906108c SS |
608 | |
609 | if (done != sizeof (dll_name_ptr) || !dll_name_ptr) | |
610 | return 1; | |
611 | ||
612 | do | |
613 | { | |
614 | ReadProcessMemory (current_process_handle, | |
615 | (LPCVOID) (dll_name_ptr + len * size), | |
616 | &b, | |
617 | size, | |
618 | &done); | |
619 | len++; | |
620 | } | |
621 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
622 | ||
623 | dll_name = alloca (len); | |
624 | ||
625 | if (event->fUnicode) | |
626 | { | |
627 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
628 | ReadProcessMemory (current_process_handle, | |
629 | (LPCVOID) dll_name_ptr, | |
630 | unicode_dll_name, | |
631 | len * sizeof (WCHAR), | |
632 | &done); | |
633 | ||
634 | WideCharToMultiByte (CP_ACP, 0, | |
635 | unicode_dll_name, len, | |
636 | dll_name, len, 0, 0); | |
637 | } | |
638 | else | |
639 | { | |
640 | ReadProcessMemory (current_process_handle, | |
641 | (LPCVOID) dll_name_ptr, | |
642 | dll_name, | |
643 | len, | |
644 | &done); | |
645 | } | |
646 | } | |
647 | ||
648 | if (!dll_name) | |
649 | return 1; | |
650 | ||
8e860359 | 651 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
652 | |
653 | return 1; | |
654 | } | |
655 | ||
d3ff4a77 | 656 | static int |
0a65a603 | 657 | handle_unload_dll (void *dummy) |
d3ff4a77 CF |
658 | { |
659 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
660 | struct so_stuff *so; | |
661 | ||
662 | for (so = &solib_start; so->next != NULL; so = so->next) | |
663 | if (so->next->load_addr == lpBaseOfDll) | |
664 | { | |
665 | struct so_stuff *sodel = so->next; | |
666 | so->next = sodel->next; | |
667 | if (!so->next) | |
668 | solib_end = so; | |
669 | if (sodel->objfile) | |
670 | free_objfile (sodel->objfile); | |
671 | xfree(sodel); | |
672 | return 1; | |
673 | } | |
674 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
450005e7 CF |
679 | /* Return name of last loaded DLL. */ |
680 | char * | |
0a65a603 | 681 | child_solib_loaded_library_pathname (int pid) |
450005e7 | 682 | { |
8e860359 | 683 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
684 | } |
685 | ||
686 | /* Clear list of loaded DLLs. */ | |
687 | void | |
688 | child_clear_solibs (void) | |
689 | { | |
690 | struct so_stuff *so, *so1 = solib_start.next; | |
691 | ||
692 | while ((so = so1) != NULL) | |
693 | { | |
694 | so1 = so->next; | |
b8c9b27d | 695 | xfree (so); |
450005e7 CF |
696 | } |
697 | ||
698 | solib_start.next = NULL; | |
d3ff4a77 | 699 | solib_start.objfile = NULL; |
450005e7 CF |
700 | solib_end = &solib_start; |
701 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
702 | } | |
703 | ||
704 | /* Add DLL symbol information. */ | |
d3ff4a77 | 705 | static struct objfile * |
02e423b9 | 706 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 CF |
707 | { |
708 | struct section_addr_info section_addrs; | |
709 | ||
c906108c SS |
710 | /* The symbols in a dll are offset by 0x1000, which is the |
711 | the offset from 0 of the first byte in an image - because | |
8a892701 | 712 | of the file header and the section alignment. */ |
c906108c | 713 | |
8e860359 | 714 | if (!name || !name[0]) |
d3ff4a77 | 715 | return NULL; |
450005e7 CF |
716 | |
717 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 718 | section_addrs.other[0].name = ".text"; |
8e860359 | 719 | section_addrs.other[0].addr = load_addr; |
d3ff4a77 | 720 | return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED); |
450005e7 CF |
721 | } |
722 | ||
723 | /* Load DLL symbol info. */ | |
724 | void | |
7470a420 | 725 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 726 | { |
8e860359 | 727 | int n; |
450005e7 | 728 | dont_repeat (); |
8e860359 | 729 | |
450005e7 CF |
730 | if (args == NULL) |
731 | error ("dll-symbols requires a file name"); | |
732 | ||
8e860359 CF |
733 | n = strlen (args); |
734 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
735 | { | |
736 | char *newargs = (char *) alloca (n + 4 + 1); | |
737 | strcpy (newargs, args); | |
738 | strcat (newargs, ".dll"); | |
739 | args = newargs; | |
740 | } | |
741 | ||
7470a420 | 742 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 743 | } |
450005e7 CF |
744 | |
745 | /* List currently loaded DLLs. */ | |
746 | void | |
0a65a603 | 747 | info_dll_command (char *ignore, int from_tty) |
450005e7 CF |
748 | { |
749 | struct so_stuff *so = &solib_start; | |
750 | ||
751 | if (!so->next) | |
752 | return; | |
753 | ||
754 | printf ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); | |
755 | while ((so = so->next) != NULL) | |
7c5c87c0 | 756 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
757 | |
758 | return; | |
c906108c SS |
759 | } |
760 | ||
761 | /* Handle DEBUG_STRING output from child process. | |
762 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
763 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
764 | static int | |
765 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
766 | { | |
767 | char *s; | |
768 | int gotasig = FALSE; | |
769 | ||
770 | if (!target_read_string | |
c5aa993b | 771 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
c906108c SS |
772 | || !s || !*s) |
773 | return gotasig; | |
774 | ||
ed9a39eb | 775 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
c906108c | 776 | { |
ed9a39eb | 777 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 778 | warning ("%s", s); |
c906108c | 779 | } |
ed9a39eb | 780 | else |
c906108c SS |
781 | { |
782 | char *p; | |
c2d11a7d JM |
783 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
784 | gotasig = target_signal_from_host (sig); | |
7a292a7a SS |
785 | ourstatus->value.sig = gotasig; |
786 | if (gotasig) | |
c906108c SS |
787 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
788 | } | |
789 | ||
b8c9b27d | 790 | xfree (s); |
c906108c SS |
791 | return gotasig; |
792 | } | |
793 | ||
794 | static int | |
450005e7 | 795 | handle_exception (struct target_waitstatus *ourstatus) |
c906108c | 796 | { |
c906108c | 797 | thread_info *th; |
29fe111d | 798 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
c906108c | 799 | |
29fe111d | 800 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 801 | |
c906108c SS |
802 | /* Record the context of the current thread */ |
803 | th = thread_rec (current_event.dwThreadId, -1); | |
804 | ||
29fe111d | 805 | switch (code) |
c906108c SS |
806 | { |
807 | case EXCEPTION_ACCESS_VIOLATION: | |
29fe111d | 808 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n", |
8e860359 | 809 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 810 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
8a892701 | 811 | last_sig = SIGSEGV; |
c906108c | 812 | break; |
0d06e24b JM |
813 | case STATUS_FLOAT_UNDERFLOW: |
814 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
815 | case STATUS_FLOAT_OVERFLOW: | |
816 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
29fe111d | 817 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 818 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
0d06e24b | 819 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
29fe111d | 820 | last_sig = SIGFPE; |
0d06e24b | 821 | break; |
c906108c | 822 | case STATUS_STACK_OVERFLOW: |
29fe111d | 823 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 824 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
825 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
826 | break; | |
827 | case EXCEPTION_BREAKPOINT: | |
29fe111d | 828 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n", |
8e860359 | 829 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
830 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
831 | break; | |
832 | case DBG_CONTROL_C: | |
29fe111d | 833 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n", |
8e860359 | 834 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 835 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
8a892701 | 836 | last_sig = SIGINT; /* FIXME - should check pass state */ |
c906108c SS |
837 | break; |
838 | case EXCEPTION_SINGLE_STEP: | |
29fe111d | 839 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n", |
8e860359 | 840 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
841 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
842 | break; | |
8227c82d | 843 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
29fe111d | 844 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n", |
8e860359 | 845 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
8227c82d | 846 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
8a892701 | 847 | last_sig = SIGILL; |
8227c82d | 848 | break; |
c906108c | 849 | default: |
02e423b9 CF |
850 | if (current_event.u.Exception.dwFirstChance) |
851 | return 0; | |
29fe111d | 852 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
c5aa993b | 853 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 854 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
c906108c SS |
855 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
856 | break; | |
857 | } | |
858 | exception_count++; | |
859 | return 1; | |
860 | } | |
861 | ||
862 | /* Resume all artificially suspended threads if we are continuing | |
863 | execution */ | |
864 | static BOOL | |
8a892701 | 865 | child_continue (DWORD continue_status, int id) |
c906108c SS |
866 | { |
867 | int i; | |
868 | thread_info *th; | |
869 | BOOL res; | |
870 | ||
29fe111d | 871 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n", |
c906108c | 872 | current_event.dwProcessId, current_event.dwThreadId)); |
7a292a7a SS |
873 | res = ContinueDebugEvent (current_event.dwProcessId, |
874 | current_event.dwThreadId, | |
875 | continue_status); | |
c2d11a7d | 876 | continue_status = 0; |
7a292a7a | 877 | if (res) |
c5aa993b | 878 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 879 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
c906108c SS |
880 | { |
881 | for (i = 0; i < th->suspend_count; i++) | |
882 | (void) ResumeThread (th->h); | |
883 | th->suspend_count = 0; | |
884 | } | |
885 | ||
886 | return res; | |
887 | } | |
888 | ||
8a892701 CF |
889 | /* Get the next event from the child. Return 1 if the event requires |
890 | handling by WFI (or whatever). | |
891 | */ | |
c2d11a7d | 892 | static int |
0a65a603 | 893 | get_child_debug_event (int pid, struct target_waitstatus *ourstatus) |
c2d11a7d JM |
894 | { |
895 | BOOL debug_event; | |
8a892701 CF |
896 | DWORD continue_status, event_code; |
897 | thread_info *th = NULL; | |
898 | static thread_info dummy_thread_info; | |
450005e7 | 899 | int retval = 0; |
c2d11a7d | 900 | |
9d3789f7 CF |
901 | last_sig = 0; |
902 | ||
8a892701 | 903 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 904 | goto out; |
c2d11a7d JM |
905 | |
906 | event_count++; | |
907 | continue_status = DBG_CONTINUE; | |
c2d11a7d | 908 | |
8a892701 | 909 | event_code = current_event.dwDebugEventCode; |
450005e7 | 910 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
911 | |
912 | switch (event_code) | |
c2d11a7d JM |
913 | { |
914 | case CREATE_THREAD_DEBUG_EVENT: | |
915 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
916 | (unsigned) current_event.dwProcessId, |
917 | (unsigned) current_event.dwThreadId, | |
918 | "CREATE_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 919 | /* Record the existence of this thread */ |
8a892701 CF |
920 | th = child_add_thread (current_event.dwThreadId, |
921 | current_event.u.CreateThread.hThread); | |
c2d11a7d JM |
922 | if (info_verbose) |
923 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
924 | target_pid_to_str ( |
925 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 926 | retval = current_event.dwThreadId; |
c2d11a7d JM |
927 | break; |
928 | ||
929 | case EXIT_THREAD_DEBUG_EVENT: | |
930 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
931 | (unsigned) current_event.dwProcessId, |
932 | (unsigned) current_event.dwThreadId, | |
933 | "EXIT_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 934 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 935 | th = &dummy_thread_info; |
c2d11a7d JM |
936 | break; |
937 | ||
938 | case CREATE_PROCESS_DEBUG_EVENT: | |
939 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
940 | (unsigned) current_event.dwProcessId, |
941 | (unsigned) current_event.dwThreadId, | |
942 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 943 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
c2d11a7d JM |
944 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
945 | ||
9d3789f7 | 946 | main_thread_id = current_event.dwThreadId; |
c2d11a7d | 947 | /* Add the main thread */ |
9d3789f7 | 948 | #if 0 |
450005e7 CF |
949 | th = child_add_thread (current_event.dwProcessId, |
950 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
951 | #endif |
952 | th = child_add_thread (main_thread_id, | |
8a892701 | 953 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 954 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
c2d11a7d JM |
955 | break; |
956 | ||
957 | case EXIT_PROCESS_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 | "EXIT_PROCESS_DEBUG_EVENT")); | |
c2d11a7d JM |
962 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
963 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
964 | CloseHandle (current_process_handle); | |
9d3789f7 | 965 | retval = main_thread_id; |
8a892701 | 966 | break; |
c2d11a7d JM |
967 | |
968 | case LOAD_DLL_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 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 973 | CloseHandle (current_event.u.LoadDll.hFile); |
8a892701 | 974 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
c2d11a7d | 975 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
976 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
977 | ourstatus->value.integer = 0; | |
9d3789f7 | 978 | retval = main_thread_id; |
c2d11a7d JM |
979 | break; |
980 | ||
981 | case UNLOAD_DLL_DEBUG_EVENT: | |
982 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
983 | (unsigned) current_event.dwProcessId, |
984 | (unsigned) current_event.dwThreadId, | |
985 | "UNLOAD_DLL_DEBUG_EVENT")); | |
d3ff4a77 CF |
986 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
987 | registers_changed (); /* mark all regs invalid */ | |
988 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
3bccec63 | 989 | does not exist yet. */ |
d3ff4a77 | 990 | break; |
c2d11a7d JM |
991 | |
992 | case EXCEPTION_DEBUG_EVENT: | |
993 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
994 | (unsigned) current_event.dwProcessId, |
995 | (unsigned) current_event.dwThreadId, | |
996 | "EXCEPTION_DEBUG_EVENT")); | |
02e423b9 CF |
997 | if (handle_exception (ourstatus)) |
998 | retval = current_event.dwThreadId; | |
c2d11a7d JM |
999 | break; |
1000 | ||
8a892701 | 1001 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
c2d11a7d | 1002 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1003 | (unsigned) current_event.dwProcessId, |
1004 | (unsigned) current_event.dwThreadId, | |
1005 | "OUTPUT_DEBUG_STRING_EVENT")); | |
8e860359 | 1006 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 1007 | retval = main_thread_id; |
c2d11a7d | 1008 | break; |
9d3789f7 | 1009 | |
c2d11a7d | 1010 | default: |
29fe111d CF |
1011 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1012 | (DWORD) current_event.dwProcessId, | |
1013 | (DWORD) current_event.dwThreadId); | |
1014 | printf_unfiltered (" unknown event code %ld\n", | |
c2d11a7d JM |
1015 | current_event.dwDebugEventCode); |
1016 | break; | |
1017 | } | |
1018 | ||
450005e7 | 1019 | if (!retval) |
8a892701 | 1020 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 1021 | else |
9d3789f7 | 1022 | { |
8e860359 | 1023 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1024 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1025 | } |
c2d11a7d JM |
1026 | |
1027 | out: | |
450005e7 | 1028 | return retval; |
c2d11a7d JM |
1029 | } |
1030 | ||
c2d11a7d | 1031 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1032 | static ptid_t |
1033 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
c906108c | 1034 | { |
39f77062 KB |
1035 | int pid = PIDGET (ptid); |
1036 | ||
c906108c SS |
1037 | /* We loop when we get a non-standard exception rather than return |
1038 | with a SPURIOUS because resume can try and step or modify things, | |
1039 | which needs a current_thread->h. But some of these exceptions mark | |
1040 | the birth or death of threads, which mean that the current thread | |
1041 | isn't necessarily what you think it is. */ | |
1042 | ||
1043 | while (1) | |
450005e7 CF |
1044 | { |
1045 | int retval = get_child_debug_event (pid, ourstatus); | |
1046 | if (retval) | |
39f77062 | 1047 | return pid_to_ptid (retval); |
450005e7 CF |
1048 | else |
1049 | { | |
1050 | int detach = 0; | |
c906108c | 1051 | |
450005e7 CF |
1052 | if (ui_loop_hook != NULL) |
1053 | detach = ui_loop_hook (0); | |
7a292a7a | 1054 | |
450005e7 CF |
1055 | if (detach) |
1056 | child_kill_inferior (); | |
1057 | } | |
1058 | } | |
c906108c SS |
1059 | } |
1060 | ||
9d3789f7 CF |
1061 | static void |
1062 | do_initial_child_stuff (DWORD pid) | |
1063 | { | |
1064 | extern int stop_after_trap; | |
1065 | ||
1066 | last_sig = 0; | |
1067 | event_count = 0; | |
1068 | exception_count = 0; | |
1069 | current_event.dwProcessId = pid; | |
1070 | memset (¤t_event, 0, sizeof (current_event)); | |
1071 | push_target (&child_ops); | |
1072 | child_init_thread_list (); | |
1073 | child_clear_solibs (); | |
1074 | clear_proceed_status (); | |
1075 | init_wait_for_inferior (); | |
1076 | ||
1077 | target_terminal_init (); | |
1078 | target_terminal_inferior (); | |
1079 | ||
1080 | while (1) | |
1081 | { | |
1082 | stop_after_trap = 1; | |
1083 | wait_for_inferior (); | |
1084 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1085 | resume (0, stop_signal); | |
1086 | else | |
1087 | break; | |
1088 | } | |
1089 | stop_after_trap = 0; | |
1090 | return; | |
1091 | } | |
1092 | ||
02cc9f49 CV |
1093 | /* Since Windows XP, detaching from a process is supported by Windows. |
1094 | The following code tries loading the appropriate functions dynamically. | |
1095 | If loading these functions succeeds use them to actually detach from | |
1096 | the inferior process, otherwise behave as usual, pretending that | |
1097 | detach has worked. */ | |
1098 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1099 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1100 | ||
1101 | static int | |
1102 | has_detach_ability () | |
1103 | { | |
1104 | static HMODULE kernel32 = NULL; | |
1105 | ||
1106 | if (!kernel32) | |
1107 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1108 | if (kernel32) | |
1109 | { | |
1110 | if (!DebugSetProcessKillOnExit) | |
1111 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1112 | "DebugSetProcessKillOnExit"); | |
1113 | if (!DebugActiveProcessStop) | |
1114 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1115 | "DebugActiveProcessStop"); | |
1116 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1117 | return 1; | |
1118 | } | |
1119 | return 0; | |
1120 | } | |
c906108c | 1121 | |
02cc9f49 | 1122 | /* Attach to process PID, then initialize for debugging it. */ |
c906108c | 1123 | static void |
fba45db2 | 1124 | child_attach (char *args, int from_tty) |
c906108c SS |
1125 | { |
1126 | BOOL ok; | |
559e75c0 | 1127 | DWORD pid; |
c906108c SS |
1128 | |
1129 | if (!args) | |
1130 | error_no_arg ("process-id to attach"); | |
1131 | ||
559e75c0 | 1132 | pid = strtoul (args, 0, 0); |
9d3789f7 | 1133 | ok = DebugActiveProcess (pid); |
c906108c SS |
1134 | |
1135 | if (!ok) | |
1136 | error ("Can't attach to process."); | |
1137 | ||
02cc9f49 CV |
1138 | if (has_detach_ability ()) |
1139 | { | |
1140 | attach_flag = 1; | |
1141 | DebugSetProcessKillOnExit (FALSE); | |
1142 | } | |
1143 | ||
c906108c SS |
1144 | if (from_tty) |
1145 | { | |
1146 | char *exec_file = (char *) get_exec_file (0); | |
1147 | ||
1148 | if (exec_file) | |
1149 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1150 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1151 | else |
1152 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1153 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1154 | |
1155 | gdb_flush (gdb_stdout); | |
1156 | } | |
1157 | ||
9d3789f7 CF |
1158 | do_initial_child_stuff (pid); |
1159 | target_terminal_ours (); | |
c906108c SS |
1160 | } |
1161 | ||
1162 | static void | |
0a65a603 | 1163 | child_detach (char *args, int from_tty) |
c906108c | 1164 | { |
02cc9f49 CV |
1165 | int detached = 1; |
1166 | ||
1167 | if (has_detach_ability ()) | |
1168 | { | |
1169 | delete_command (NULL, 0); | |
1170 | child_continue (DBG_CONTINUE, -1); | |
1171 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
3bccec63 | 1172 | { |
02cc9f49 CV |
1173 | error ("Can't detach process %lu (error %lu)", |
1174 | current_event.dwProcessId, GetLastError ()); | |
1175 | detached = 0; | |
3bccec63 | 1176 | } |
02cc9f49 CV |
1177 | DebugSetProcessKillOnExit (FALSE); |
1178 | } | |
1179 | if (detached && from_tty) | |
c906108c SS |
1180 | { |
1181 | char *exec_file = get_exec_file (0); | |
1182 | if (exec_file == 0) | |
1183 | exec_file = ""; | |
02cc9f49 CV |
1184 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1185 | current_event.dwProcessId); | |
c906108c SS |
1186 | gdb_flush (gdb_stdout); |
1187 | } | |
39f77062 | 1188 | inferior_ptid = null_ptid; |
c906108c SS |
1189 | unpush_target (&child_ops); |
1190 | } | |
1191 | ||
1192 | /* Print status information about what we're accessing. */ | |
1193 | ||
1194 | static void | |
0a65a603 | 1195 | child_files_info (struct target_ops *ignore) |
c906108c SS |
1196 | { |
1197 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1198 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
1199 | } |
1200 | ||
1201 | /* ARGSUSED */ | |
1202 | static void | |
0a65a603 | 1203 | child_open (char *arg, int from_tty) |
c906108c SS |
1204 | { |
1205 | error ("Use the \"run\" command to start a Unix child process."); | |
1206 | } | |
1207 | ||
39f77062 | 1208 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
c906108c SS |
1209 | EXEC_FILE is the file to run. |
1210 | ALLARGS is a string containing the arguments to the program. | |
1211 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1212 | ||
1213 | static void | |
fba45db2 | 1214 | child_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c SS |
1215 | { |
1216 | char real_path[MAXPATHLEN]; | |
1217 | char *winenv; | |
1218 | char *temp; | |
c5aa993b | 1219 | int envlen; |
c906108c | 1220 | int i; |
c906108c SS |
1221 | STARTUPINFO si; |
1222 | PROCESS_INFORMATION pi; | |
c906108c SS |
1223 | BOOL ret; |
1224 | DWORD flags; | |
1225 | char *args; | |
1226 | ||
1227 | if (!exec_file) | |
450005e7 | 1228 | error ("No executable specified, use `target exec'.\n"); |
c906108c SS |
1229 | |
1230 | memset (&si, 0, sizeof (si)); | |
1231 | si.cb = sizeof (si); | |
1232 | ||
29fe111d | 1233 | cygwin_conv_to_win32_path (exec_file, real_path); |
c906108c SS |
1234 | |
1235 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1236 | ||
1237 | if (new_group) | |
1238 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1239 | ||
1240 | if (new_console) | |
1241 | flags |= CREATE_NEW_CONSOLE; | |
1242 | ||
1243 | args = alloca (strlen (real_path) + strlen (allargs) + 2); | |
1244 | ||
1245 | strcpy (args, real_path); | |
1246 | ||
1247 | strcat (args, " "); | |
1248 | strcat (args, allargs); | |
1249 | ||
1250 | /* Prepare the environment vars for CreateProcess. */ | |
1251 | { | |
1252 | /* This code use to assume all env vars were file names and would | |
1253 | translate them all to win32 style. That obviously doesn't work in the | |
1254 | general case. The current rule is that we only translate PATH. | |
1255 | We need to handle PATH because we're about to call CreateProcess and | |
1256 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1257 | in both posix and win32 environments. cygwin.dll will change it back | |
1258 | to posix style if necessary. */ | |
1259 | ||
1260 | static const char *conv_path_names[] = | |
c5aa993b JM |
1261 | { |
1262 | "PATH=", | |
1263 | 0 | |
1264 | }; | |
c906108c SS |
1265 | |
1266 | /* CreateProcess takes the environment list as a null terminated set of | |
1267 | strings (i.e. two nulls terminate the list). */ | |
1268 | ||
1269 | /* Get total size for env strings. */ | |
1270 | for (envlen = 0, 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 | 1280 | envlen += len |
29fe111d | 1281 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
c906108c SS |
1282 | else |
1283 | envlen += strlen (env[i]) + 1; | |
1284 | break; | |
1285 | } | |
1286 | } | |
1287 | if (conv_path_names[j] == NULL) | |
1288 | envlen += strlen (env[i]) + 1; | |
1289 | } | |
1290 | ||
1291 | winenv = alloca (envlen + 1); | |
1292 | ||
1293 | /* Copy env strings into new buffer. */ | |
1294 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) | |
1295 | { | |
1296 | int j, len; | |
1297 | ||
1298 | for (j = 0; conv_path_names[j]; j++) | |
1299 | { | |
1300 | len = strlen (conv_path_names[j]); | |
1301 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1302 | { | |
29fe111d | 1303 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c SS |
1304 | { |
1305 | memcpy (temp, env[i], len); | |
29fe111d | 1306 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
c906108c SS |
1307 | } |
1308 | else | |
1309 | strcpy (temp, env[i]); | |
1310 | break; | |
1311 | } | |
1312 | } | |
1313 | if (conv_path_names[j] == NULL) | |
1314 | strcpy (temp, env[i]); | |
1315 | ||
1316 | temp += strlen (temp) + 1; | |
1317 | } | |
1318 | ||
1319 | /* Final nil string to terminate new env. */ | |
1320 | *temp = 0; | |
1321 | } | |
1322 | ||
1323 | ret = CreateProcess (0, | |
c5aa993b | 1324 | args, /* command line */ |
c906108c SS |
1325 | NULL, /* Security */ |
1326 | NULL, /* thread */ | |
1327 | TRUE, /* inherit handles */ | |
1328 | flags, /* start flags */ | |
1329 | winenv, | |
1330 | NULL, /* current directory */ | |
1331 | &si, | |
1332 | &pi); | |
1333 | if (!ret) | |
c5aa993b | 1334 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
c906108c | 1335 | |
700b351b CF |
1336 | CloseHandle (pi.hThread); |
1337 | CloseHandle (pi.hProcess); | |
9d3789f7 | 1338 | do_initial_child_stuff (pi.dwProcessId); |
ed9a39eb | 1339 | |
8e860359 | 1340 | /* child_continue (DBG_CONTINUE, -1); */ |
c2d11a7d | 1341 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
c906108c SS |
1342 | } |
1343 | ||
1344 | static void | |
fba45db2 | 1345 | child_mourn_inferior (void) |
c906108c | 1346 | { |
8a892701 | 1347 | (void) child_continue (DBG_CONTINUE, -1); |
c906108c SS |
1348 | unpush_target (&child_ops); |
1349 | generic_mourn_inferior (); | |
1350 | } | |
1351 | ||
1352 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
1353 | ^C on the controlling terminal. */ | |
1354 | ||
1355 | static void | |
fba45db2 | 1356 | child_stop (void) |
c906108c SS |
1357 | { |
1358 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); | |
c2d11a7d | 1359 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
c5aa993b | 1360 | registers_changed (); /* refresh register state */ |
c906108c SS |
1361 | } |
1362 | ||
1363 | int | |
1364 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
0a65a603 AC |
1365 | int write, struct mem_attrib *mem, |
1366 | struct target_ops *target) | |
c906108c SS |
1367 | { |
1368 | DWORD done; | |
1369 | if (write) | |
1370 | { | |
29fe111d CF |
1371 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1372 | len, (DWORD) memaddr)); | |
c906108c SS |
1373 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1374 | len, &done); | |
1375 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
1376 | } | |
1377 | else | |
1378 | { | |
29fe111d CF |
1379 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1380 | len, (DWORD) memaddr)); | |
c906108c SS |
1381 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1382 | &done); | |
1383 | } | |
1384 | return done; | |
1385 | } | |
1386 | ||
1387 | void | |
1388 | child_kill_inferior (void) | |
1389 | { | |
1390 | CHECK (TerminateProcess (current_process_handle, 0)); | |
1391 | ||
1392 | for (;;) | |
1393 | { | |
8a892701 | 1394 | if (!child_continue (DBG_CONTINUE, -1)) |
c906108c SS |
1395 | break; |
1396 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
1397 | break; | |
1398 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
1399 | break; | |
1400 | } | |
1401 | ||
1402 | CHECK (CloseHandle (current_process_handle)); | |
1403 | ||
1404 | /* this may fail in an attached process so don't check. */ | |
1405 | (void) CloseHandle (current_thread->h); | |
c5aa993b | 1406 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
c906108c SS |
1407 | } |
1408 | ||
1409 | void | |
39f77062 | 1410 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c | 1411 | { |
c906108c | 1412 | thread_info *th; |
8a892701 | 1413 | DWORD continue_status = last_sig > 0 && last_sig < NSIG ? |
8e860359 | 1414 | DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE; |
39f77062 | 1415 | int pid = PIDGET (ptid); |
8a892701 CF |
1416 | |
1417 | last_sig = 0; | |
c906108c SS |
1418 | |
1419 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", | |
1420 | pid, step, sig)); | |
1421 | ||
1422 | /* Get context for currently selected thread */ | |
1423 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1424 | if (th) |
c906108c | 1425 | { |
450005e7 CF |
1426 | if (step) |
1427 | { | |
1428 | /* Single step by setting t bit */ | |
1429 | child_fetch_inferior_registers (PS_REGNUM); | |
1430 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1431 | } | |
c906108c | 1432 | |
450005e7 CF |
1433 | if (th->context.ContextFlags) |
1434 | { | |
1435 | CHECK (SetThreadContext (th->h, &th->context)); | |
1436 | th->context.ContextFlags = 0; | |
1437 | } | |
c906108c SS |
1438 | } |
1439 | ||
1440 | /* Allow continuing with the same signal that interrupted us. | |
1441 | Otherwise complain. */ | |
c906108c | 1442 | |
8a892701 | 1443 | child_continue (continue_status, pid); |
c906108c SS |
1444 | } |
1445 | ||
1446 | static void | |
fba45db2 | 1447 | child_prepare_to_store (void) |
c906108c SS |
1448 | { |
1449 | /* Do nothing, since we can store individual regs */ | |
1450 | } | |
1451 | ||
1452 | static int | |
fba45db2 | 1453 | child_can_run (void) |
c906108c SS |
1454 | { |
1455 | return 1; | |
1456 | } | |
1457 | ||
1458 | static void | |
0a65a603 | 1459 | child_close (int x) |
c906108c | 1460 | { |
39f77062 | 1461 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
3bccec63 | 1462 | PIDGET (inferior_ptid))); |
c906108c SS |
1463 | } |
1464 | ||
c5aa993b | 1465 | struct target_ops child_ops; |
c906108c | 1466 | |
c5aa993b JM |
1467 | static void |
1468 | init_child_ops (void) | |
c906108c | 1469 | { |
c5aa993b JM |
1470 | child_ops.to_shortname = "child"; |
1471 | child_ops.to_longname = "Win32 child process"; | |
1472 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1473 | child_ops.to_open = child_open; | |
1474 | child_ops.to_close = child_close; | |
1475 | child_ops.to_attach = child_attach; | |
1476 | child_ops.to_detach = child_detach; | |
1477 | child_ops.to_resume = child_resume; | |
1478 | child_ops.to_wait = child_wait; | |
1479 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1480 | child_ops.to_store_registers = child_store_inferior_registers; | |
1481 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1482 | child_ops.to_xfer_memory = child_xfer_memory; | |
1483 | child_ops.to_files_info = child_files_info; | |
1484 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1485 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1486 | child_ops.to_terminal_init = terminal_init_inferior; | |
1487 | child_ops.to_terminal_inferior = terminal_inferior; | |
1488 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1489 | child_ops.to_terminal_ours = terminal_ours; | |
1490 | child_ops.to_terminal_info = child_terminal_info; | |
1491 | child_ops.to_kill = child_kill_inferior; | |
1492 | child_ops.to_load = 0; | |
1493 | child_ops.to_lookup_symbol = 0; | |
1494 | child_ops.to_create_inferior = child_create_inferior; | |
1495 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1496 | child_ops.to_can_run = child_can_run; | |
1497 | child_ops.to_notice_signals = 0; | |
1498 | child_ops.to_thread_alive = win32_child_thread_alive; | |
ed9a39eb | 1499 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
c5aa993b JM |
1500 | child_ops.to_stop = child_stop; |
1501 | child_ops.to_stratum = process_stratum; | |
1502 | child_ops.DONT_USE = 0; | |
1503 | child_ops.to_has_all_memory = 1; | |
1504 | child_ops.to_has_memory = 1; | |
1505 | child_ops.to_has_stack = 1; | |
1506 | child_ops.to_has_registers = 1; | |
1507 | child_ops.to_has_execution = 1; | |
1508 | child_ops.to_sections = 0; | |
1509 | child_ops.to_sections_end = 0; | |
1510 | child_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
1511 | } |
1512 | ||
1513 | void | |
fba45db2 | 1514 | _initialize_inftarg (void) |
c906108c | 1515 | { |
fa58ee11 EZ |
1516 | struct cmd_list_element *c; |
1517 | ||
c5aa993b | 1518 | init_child_ops (); |
c906108c | 1519 | |
fa58ee11 EZ |
1520 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1521 | "Load dll library symbols from FILE."); | |
1522 | c->completer = filename_completer; | |
450005e7 CF |
1523 | |
1524 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
1525 | ||
1526 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, | |
8e860359 CF |
1527 | (char *) &new_console, |
1528 | "Set creation of new console when creating child process.", | |
1529 | &setlist), | |
1530 | &showlist); | |
c906108c | 1531 | |
450005e7 | 1532 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1533 | (char *) &new_group, |
1534 | "Set creation of new group when creating child process.", | |
1535 | &setlist), | |
1536 | &showlist); | |
c906108c | 1537 | |
450005e7 | 1538 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1539 | (char *) &debug_exec, |
1540 | "Set whether to display execution in child process.", | |
1541 | &setlist), | |
1542 | &showlist); | |
c906108c | 1543 | |
450005e7 | 1544 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1545 | (char *) &debug_events, |
1546 | "Set whether to display kernel events in child process.", | |
1547 | &setlist), | |
1548 | &showlist); | |
c906108c | 1549 | |
450005e7 | 1550 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1551 | (char *) &debug_memory, |
1552 | "Set whether to display memory accesses in child process.", | |
1553 | &setlist), | |
1554 | &showlist); | |
c906108c | 1555 | |
450005e7 | 1556 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1557 | (char *) &debug_exceptions, |
1558 | "Set whether to display kernel exceptions in child process.", | |
1559 | &setlist), | |
1560 | &showlist); | |
c906108c | 1561 | |
450005e7 CF |
1562 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1563 | add_info_alias ("sharedlibrary", "dll", 1); | |
1564 | ||
c906108c SS |
1565 | add_target (&child_ops); |
1566 | } | |
1567 | ||
1568 | /* Determine if the thread referenced by "pid" is alive | |
1569 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1570 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1571 | static int | |
39f77062 | 1572 | win32_child_thread_alive (ptid_t ptid) |
c906108c | 1573 | { |
39f77062 KB |
1574 | int pid = PIDGET (ptid); |
1575 | ||
c5aa993b JM |
1576 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1577 | FALSE : TRUE; | |
c906108c SS |
1578 | } |
1579 | ||
1580 | /* Convert pid to printable format. */ | |
1581 | char * | |
39f77062 | 1582 | cygwin_pid_to_str (ptid_t ptid) |
c906108c SS |
1583 | { |
1584 | static char buf[80]; | |
39f77062 KB |
1585 | int pid = PIDGET (ptid); |
1586 | ||
29fe111d | 1587 | if ((DWORD) pid == current_event.dwProcessId) |
c906108c SS |
1588 | sprintf (buf, "process %d", pid); |
1589 | else | |
29fe111d | 1590 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
c906108c SS |
1591 | return buf; |
1592 | } | |
8e860359 CF |
1593 | |
1594 | static int | |
1595 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1596 | { | |
1597 | struct objfile *objfile; | |
1598 | char *objfile_basename; | |
1599 | const char *dll_basename; | |
1600 | ||
1601 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1602 | dll_basename = dll_name; | |
1603 | else | |
1604 | dll_basename++; | |
1605 | ||
1606 | ALL_OBJFILES (objfile) | |
1607 | { | |
1608 | objfile_basename = strrchr (objfile->name, '/'); | |
1609 | ||
1610 | if (objfile_basename && | |
1611 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1612 | { | |
1613 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1614 | base_addr, dll_name); | |
1615 | goto out; | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 1620 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
1621 | |
1622 | out: | |
1623 | return 1; | |
1624 | } | |
1625 | ||
1626 | typedef struct | |
1627 | { | |
1628 | struct target_ops *target; | |
1629 | bfd_vma addr; | |
1630 | } | |
1631 | map_code_section_args; | |
1632 | ||
1633 | static void | |
554cb486 | 1634 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1635 | { |
1636 | int old; | |
1637 | int update_coreops; | |
1638 | struct section_table *new_target_sect_ptr; | |
1639 | ||
1640 | map_code_section_args *args = (map_code_section_args *) obj; | |
1641 | struct target_ops *target = args->target; | |
1642 | if (sect->flags & SEC_CODE) | |
1643 | { | |
1644 | update_coreops = core_ops.to_sections == target->to_sections; | |
1645 | ||
1646 | if (target->to_sections) | |
1647 | { | |
1648 | old = target->to_sections_end - target->to_sections; | |
1649 | target->to_sections = (struct section_table *) | |
1650 | xrealloc ((char *) target->to_sections, | |
1651 | (sizeof (struct section_table)) * (1 + old)); | |
1652 | } | |
1653 | else | |
1654 | { | |
1655 | old = 0; | |
1656 | target->to_sections = (struct section_table *) | |
1657 | xmalloc ((sizeof (struct section_table))); | |
1658 | } | |
1659 | target->to_sections_end = target->to_sections + (1 + old); | |
1660 | ||
1661 | /* Update the to_sections field in the core_ops structure | |
3bccec63 | 1662 | if needed. */ |
8e860359 CF |
1663 | if (update_coreops) |
1664 | { | |
1665 | core_ops.to_sections = target->to_sections; | |
1666 | core_ops.to_sections_end = target->to_sections_end; | |
1667 | } | |
1668 | new_target_sect_ptr = target->to_sections + old; | |
1669 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
1670 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
1671 | bfd_section_size (abfd, sect);; | |
1672 | new_target_sect_ptr->the_bfd_section = sect; | |
1673 | new_target_sect_ptr->bfd = abfd; | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | static int | |
1678 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
1679 | { | |
1680 | bfd *dll_bfd; | |
1681 | map_code_section_args map_args; | |
1682 | asection *lowest_sect; | |
1683 | char *name; | |
1684 | if (dll_name == NULL || target == NULL) | |
1685 | return 0; | |
66ed1d85 | 1686 | name = xstrdup (dll_name); |
8e860359 CF |
1687 | dll_bfd = bfd_openr (name, "pei-i386"); |
1688 | if (dll_bfd == NULL) | |
1689 | return 0; | |
1690 | ||
1691 | if (bfd_check_format (dll_bfd, bfd_object)) | |
1692 | { | |
1693 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
1694 | if (lowest_sect == NULL) | |
1695 | return 0; | |
1696 | map_args.target = target; | |
1697 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
1698 | ||
554cb486 | 1699 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
1700 | } |
1701 | ||
1702 | return 1; | |
1703 | } | |
1704 | ||
1705 | static void | |
554cb486 | 1706 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1707 | { |
1708 | struct target_ops *target = (struct target_ops *) obj; | |
1709 | ||
1710 | DWORD base_addr; | |
1711 | ||
1712 | int dll_name_size; | |
1713 | char *dll_name = NULL; | |
1714 | char *buf = NULL; | |
1715 | struct win32_pstatus *pstatus; | |
1716 | char *p; | |
1717 | ||
1718 | if (strncmp (sect->name, ".module", 7)) | |
1719 | return; | |
1720 | ||
1721 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
1722 | if (!buf) | |
1723 | { | |
1724 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1725 | goto out; | |
1726 | } | |
1727 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
1728 | goto out; | |
1729 | ||
1730 | pstatus = (struct win32_pstatus *) buf; | |
1731 | ||
1732 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
1733 | dll_name_size = pstatus->data.module_info.module_name_size; | |
1734 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
1735 | goto out; | |
1736 | ||
1737 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
1738 | if (!dll_name) | |
1739 | { | |
1740 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1741 | goto out; | |
1742 | } | |
1743 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
1744 | ||
1745 | while ((p = strchr (dll_name, '\\'))) | |
1746 | *p = '/'; | |
1747 | ||
1748 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
1749 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
1750 | ||
1751 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
1752 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
1753 | ||
1754 | out: | |
1755 | if (buf) | |
b8c9b27d | 1756 | xfree (buf); |
8e860359 | 1757 | if (dll_name) |
b8c9b27d | 1758 | xfree (dll_name); |
8e860359 CF |
1759 | return; |
1760 | } | |
1761 | ||
1762 | void | |
0a65a603 AC |
1763 | child_solib_add (char *filename, int from_tty, struct target_ops *target, |
1764 | int readsyms) | |
8e860359 | 1765 | { |
990f9fe3 FF |
1766 | if (!readsyms) |
1767 | return; | |
8e860359 CF |
1768 | if (core_bfd) |
1769 | { | |
1770 | child_clear_solibs (); | |
1771 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
1772 | } | |
1773 | else | |
1774 | { | |
1775 | if (solib_end && solib_end->name) | |
d3ff4a77 | 1776 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
3bccec63 | 1777 | solib_end->load_addr); |
8e860359 CF |
1778 | } |
1779 | } | |
1780 | ||
1781 | static void | |
1782 | fetch_elf_core_registers (char *core_reg_sect, | |
1783 | unsigned core_reg_size, | |
1784 | int which, | |
1785 | CORE_ADDR reg_addr) | |
1786 | { | |
1787 | int r; | |
1788 | if (core_reg_size < sizeof (CONTEXT)) | |
1789 | { | |
1790 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
1791 | return; | |
1792 | } | |
1793 | for (r = 0; r < NUM_REGS; r++) | |
1794 | supply_register (r, core_reg_sect + mappings[r]); | |
1795 | } | |
1796 | ||
1797 | static struct core_fns win32_elf_core_fns = | |
1798 | { | |
1799 | bfd_target_elf_flavour, | |
1800 | default_check_format, | |
1801 | default_core_sniffer, | |
1802 | fetch_elf_core_registers, | |
1803 | NULL | |
1804 | }; | |
1805 | ||
1806 | void | |
0613c401 | 1807 | _initialize_core_win32 (void) |
8e860359 CF |
1808 | { |
1809 | add_core_fns (&win32_elf_core_fns); | |
1810 | } | |
2a3d5645 CF |
1811 | |
1812 | void | |
1813 | _initialize_check_for_gdb_ini (void) | |
1814 | { | |
1815 | char *homedir; | |
1816 | if (inhibit_gdbinit) | |
1817 | return; | |
1818 | ||
1819 | homedir = getenv ("HOME"); | |
1820 | if (homedir) | |
1821 | { | |
1822 | char *p; | |
1823 | char *oldini = (char *) alloca (strlen (homedir) + | |
1824 | sizeof ("/gdb.ini")); | |
1825 | strcpy (oldini, homedir); | |
1826 | p = strchr (oldini, '\0'); | |
1827 | if (p > oldini && p[-1] != '/') | |
1828 | *p++ = '/'; | |
1829 | strcpy (p, "gdb.ini"); | |
1830 | if (access (oldini, 0) == 0) | |
1831 | { | |
1832 | int len = strlen (oldini); | |
1833 | char *newini = alloca (len + 1); | |
1834 | sprintf (newini, "%.*s.gdbinit", len - (sizeof ("gdb.ini") - 1), oldini); | |
1835 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); | |
1836 | } | |
1837 | } | |
1838 | } |