Commit | Line | Data |
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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" | |
97da3b20 | 28 | #include "tm.h" /* required for SSE registers */ |
c906108c SS |
29 | #include "frame.h" /* required by inferior.h */ |
30 | #include "inferior.h" | |
31 | #include "target.h" | |
c906108c SS |
32 | #include "gdbcore.h" |
33 | #include "command.h" | |
fa58ee11 | 34 | #include "completer.h" |
4e052eda | 35 | #include "regcache.h" |
2a3d5645 | 36 | #include "top.h" |
c25b74ac | 37 | #include "i386-tdep.h" |
c906108c SS |
38 | #include <signal.h> |
39 | #include <sys/types.h> | |
40 | #include <fcntl.h> | |
41 | #include <stdlib.h> | |
c906108c | 42 | #include <windows.h> |
c2d11a7d | 43 | #include <imagehlp.h> |
29fe111d | 44 | #include <sys/cygwin.h> |
c906108c SS |
45 | |
46 | #include "buildsym.h" | |
47 | #include "symfile.h" | |
48 | #include "objfiles.h" | |
49 | #include "gdb_string.h" | |
50 | #include "gdbthread.h" | |
51 | #include "gdbcmd.h" | |
52 | #include <sys/param.h> | |
c2d11a7d | 53 | #include <unistd.h> |
c906108c | 54 | |
7a292a7a | 55 | /* The ui's event loop. */ |
507f3c78 | 56 | extern int (*ui_loop_hook) (int signo); |
7a292a7a SS |
57 | |
58 | /* If we're not using the old Cygwin header file set, define the | |
59 | following which never should have been in the generic Win32 API | |
60 | headers in the first place since they were our own invention... */ | |
61 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 62 | enum |
8e860359 CF |
63 | { |
64 | FLAG_TRACE_BIT = 0x100, | |
65 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
66 | }; | |
7a292a7a | 67 | #endif |
8e860359 CF |
68 | #include <sys/procfs.h> |
69 | #include <psapi.h> | |
7a292a7a | 70 | |
97da3b20 | 71 | #ifdef HAVE_SSE_REGS |
3bccec63 | 72 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_EXTENDED_REGISTERS |
97da3b20 CF |
73 | #else |
74 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | |
75 | #endif | |
76 | ||
77 | ||
c906108c SS |
78 | /* The string sent by cygwin when it processes a signal. |
79 | FIXME: This should be in a cygwin include file. */ | |
80 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
81 | ||
29fe111d | 82 | #define CHECK(x) check (x, __FILE__,__LINE__) |
c906108c SS |
83 | #define DEBUG_EXEC(x) if (debug_exec) printf x |
84 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
85 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
86 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
87 | ||
88 | /* Forward declaration */ | |
89 | extern struct target_ops child_ops; | |
90 | ||
a14ed312 | 91 | static void child_stop (void); |
39f77062 | 92 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 93 | void child_kill_inferior (void); |
c906108c | 94 | |
8a892701 CF |
95 | static int last_sig = 0; /* Set if a signal was received from the |
96 | debugged process */ | |
c906108c SS |
97 | /* Thread information structure used to track information that is |
98 | not available in gdb's thread structure. */ | |
99 | typedef struct thread_info_struct | |
c5aa993b JM |
100 | { |
101 | struct thread_info_struct *next; | |
102 | DWORD id; | |
103 | HANDLE h; | |
104 | char *name; | |
105 | int suspend_count; | |
106 | CONTEXT context; | |
c2d11a7d | 107 | STACKFRAME sf; |
8e860359 CF |
108 | } |
109 | thread_info; | |
c2d11a7d | 110 | |
29fe111d | 111 | static thread_info thread_head; |
c906108c | 112 | |
c906108c SS |
113 | /* The process and thread handles for the above context. */ |
114 | ||
115 | static DEBUG_EVENT current_event; /* The current debug event from | |
116 | WaitForDebugEvent */ | |
117 | static HANDLE current_process_handle; /* Currently executing process */ | |
118 | static thread_info *current_thread; /* Info on currently selected thread */ | |
c5aa993b | 119 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
c906108c SS |
120 | |
121 | /* Counts of things. */ | |
122 | static int exception_count = 0; | |
123 | static int event_count = 0; | |
124 | ||
125 | /* User options. */ | |
126 | static int new_console = 0; | |
c2d11a7d | 127 | static int new_group = 1; |
c5aa993b JM |
128 | static int debug_exec = 0; /* show execution */ |
129 | static int debug_events = 0; /* show events from kernel */ | |
130 | static int debug_memory = 0; /* show target memory accesses */ | |
c906108c SS |
131 | static int debug_exceptions = 0; /* show target exceptions */ |
132 | ||
133 | /* This vector maps GDB's idea of a register's number into an address | |
134 | in the win32 exception context vector. | |
135 | ||
136 | It also contains the bit mask needed to load the register in question. | |
137 | ||
138 | One day we could read a reg, we could inspect the context we | |
139 | already have loaded, if it doesn't have the bit set that we need, | |
140 | we read that set of registers in using GetThreadContext. If the | |
141 | context already contains what we need, we just unpack it. Then to | |
142 | write a register, first we have to ensure that the context contains | |
143 | the other regs of the group, and then we copy the info in and set | |
144 | out bit. */ | |
145 | ||
146 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) | |
147 | static const int mappings[] = | |
148 | { | |
c5aa993b JM |
149 | context_offset (Eax), |
150 | context_offset (Ecx), | |
151 | context_offset (Edx), | |
152 | context_offset (Ebx), | |
153 | context_offset (Esp), | |
154 | context_offset (Ebp), | |
155 | context_offset (Esi), | |
156 | context_offset (Edi), | |
157 | context_offset (Eip), | |
158 | context_offset (EFlags), | |
159 | context_offset (SegCs), | |
160 | context_offset (SegSs), | |
161 | context_offset (SegDs), | |
162 | context_offset (SegEs), | |
163 | context_offset (SegFs), | |
164 | context_offset (SegGs), | |
165 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
166 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
167 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
168 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
169 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
170 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
171 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
172 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
c2d11a7d JM |
173 | context_offset (FloatSave.ControlWord), |
174 | context_offset (FloatSave.StatusWord), | |
175 | context_offset (FloatSave.TagWord), | |
176 | context_offset (FloatSave.ErrorSelector), | |
177 | context_offset (FloatSave.ErrorOffset), | |
178 | context_offset (FloatSave.DataSelector), | |
179 | context_offset (FloatSave.DataOffset), | |
ed9a39eb | 180 | context_offset (FloatSave.ErrorSelector) |
97da3b20 CF |
181 | #ifdef HAVE_SSE_REGS |
182 | /* XMM0-7 */ , | |
441532d7 PM |
183 | context_offset (ExtendedRegisters[10*16]), |
184 | context_offset (ExtendedRegisters[11*16]), | |
185 | context_offset (ExtendedRegisters[12*16]), | |
186 | context_offset (ExtendedRegisters[13*16]), | |
187 | context_offset (ExtendedRegisters[14*16]), | |
188 | context_offset (ExtendedRegisters[15*16]), | |
189 | context_offset (ExtendedRegisters[16*16]), | |
190 | context_offset (ExtendedRegisters[17*16]), | |
191 | /* MXCSR */ | |
192 | context_offset (ExtendedRegisters[24]) | |
97da3b20 | 193 | #endif |
c906108c SS |
194 | }; |
195 | ||
ed9a39eb JM |
196 | #undef context_offset |
197 | ||
c906108c SS |
198 | /* This vector maps the target's idea of an exception (extracted |
199 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
200 | ||
201 | struct xlate_exception | |
202 | { | |
203 | int them; | |
204 | enum target_signal us; | |
205 | }; | |
206 | ||
207 | static const struct xlate_exception | |
208 | xlate[] = | |
209 | { | |
210 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
211 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, | |
212 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, | |
213 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
214 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
215 | {-1, -1}}; | |
216 | ||
217 | /* Find a thread record given a thread id. | |
218 | If get_context then also retrieve the context for this | |
219 | thread. */ | |
220 | static thread_info * | |
221 | thread_rec (DWORD id, int get_context) | |
222 | { | |
223 | thread_info *th; | |
224 | ||
c5aa993b | 225 | for (th = &thread_head; (th = th->next) != NULL;) |
c906108c SS |
226 | if (th->id == id) |
227 | { | |
228 | if (!th->suspend_count && get_context) | |
229 | { | |
8a892701 | 230 | if (get_context > 0 && id != current_event.dwThreadId) |
c906108c SS |
231 | th->suspend_count = SuspendThread (th->h) + 1; |
232 | else if (get_context < 0) | |
233 | th->suspend_count = -1; | |
234 | ||
97da3b20 | 235 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
c906108c SS |
236 | GetThreadContext (th->h, &th->context); |
237 | } | |
238 | return th; | |
239 | } | |
240 | ||
241 | return NULL; | |
242 | } | |
243 | ||
244 | /* Add a thread to the thread list */ | |
245 | static thread_info * | |
c5aa993b | 246 | child_add_thread (DWORD id, HANDLE h) |
c906108c SS |
247 | { |
248 | thread_info *th; | |
249 | ||
250 | if ((th = thread_rec (id, FALSE))) | |
251 | return th; | |
252 | ||
253 | th = (thread_info *) xmalloc (sizeof (*th)); | |
c5aa993b | 254 | memset (th, 0, sizeof (*th)); |
c906108c SS |
255 | th->id = id; |
256 | th->h = h; | |
257 | th->next = thread_head.next; | |
258 | thread_head.next = th; | |
39f77062 | 259 | add_thread (pid_to_ptid (id)); |
c906108c SS |
260 | return th; |
261 | } | |
262 | ||
263 | /* Clear out any old thread list and reintialize it to a | |
264 | pristine state. */ | |
265 | static void | |
fba45db2 | 266 | child_init_thread_list (void) |
c906108c SS |
267 | { |
268 | thread_info *th = &thread_head; | |
269 | ||
270 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
271 | init_thread_list (); | |
272 | while (th->next != NULL) | |
273 | { | |
274 | thread_info *here = th->next; | |
275 | th->next = here->next; | |
276 | (void) CloseHandle (here->h); | |
b8c9b27d | 277 | xfree (here); |
c906108c SS |
278 | } |
279 | } | |
280 | ||
281 | /* Delete a thread from the list of threads */ | |
282 | static void | |
283 | child_delete_thread (DWORD id) | |
284 | { | |
285 | thread_info *th; | |
286 | ||
287 | if (info_verbose) | |
39f77062 KB |
288 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
289 | delete_thread (pid_to_ptid (id)); | |
c906108c SS |
290 | |
291 | for (th = &thread_head; | |
292 | th->next != NULL && th->next->id != id; | |
293 | th = th->next) | |
294 | continue; | |
295 | ||
296 | if (th->next != NULL) | |
297 | { | |
298 | thread_info *here = th->next; | |
299 | th->next = here->next; | |
300 | CloseHandle (here->h); | |
b8c9b27d | 301 | xfree (here); |
c906108c SS |
302 | } |
303 | } | |
304 | ||
305 | static void | |
306 | check (BOOL ok, const char *file, int line) | |
307 | { | |
308 | if (!ok) | |
29fe111d | 309 | printf_filtered ("error return %s:%d was %lu\n", file, line, GetLastError ()); |
c906108c SS |
310 | } |
311 | ||
312 | static void | |
313 | do_child_fetch_inferior_registers (int r) | |
314 | { | |
c2d11a7d JM |
315 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
316 | long l; | |
317 | if (r == FCS_REGNUM) | |
318 | { | |
8e860359 | 319 | l = *((long *) context_offset) & 0xffff; |
c2d11a7d JM |
320 | supply_register (r, (char *) &l); |
321 | } | |
322 | else if (r == FOP_REGNUM) | |
323 | { | |
8e860359 | 324 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
c2d11a7d JM |
325 | supply_register (r, (char *) &l); |
326 | } | |
327 | else if (r >= 0) | |
ed9a39eb | 328 | supply_register (r, context_offset); |
c906108c SS |
329 | else |
330 | { | |
331 | for (r = 0; r < NUM_REGS; r++) | |
332 | do_child_fetch_inferior_registers (r); | |
333 | } | |
334 | } | |
335 | ||
336 | static void | |
337 | child_fetch_inferior_registers (int r) | |
338 | { | |
39f77062 | 339 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
340 | do_child_fetch_inferior_registers (r); |
341 | } | |
342 | ||
343 | static void | |
344 | do_child_store_inferior_registers (int r) | |
345 | { | |
346 | if (r >= 0) | |
347 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
348 | else | |
349 | { | |
350 | for (r = 0; r < NUM_REGS; r++) | |
351 | do_child_store_inferior_registers (r); | |
352 | } | |
353 | } | |
354 | ||
355 | /* Store a new register value into the current thread context */ | |
356 | static void | |
357 | child_store_inferior_registers (int r) | |
358 | { | |
39f77062 | 359 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
360 | do_child_store_inferior_registers (r); |
361 | } | |
362 | ||
c2d11a7d JM |
363 | static int psapi_loaded = 0; |
364 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
365 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
366 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
367 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
c2d11a7d | 368 | |
3bccec63 | 369 | int |
8e860359 | 370 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
c2d11a7d JM |
371 | { |
372 | DWORD len; | |
373 | MODULEINFO mi; | |
374 | int i; | |
8e860359 CF |
375 | HMODULE dh_buf[1]; |
376 | HMODULE *DllHandle = dh_buf; | |
c2d11a7d JM |
377 | DWORD cbNeeded; |
378 | BOOL ok; | |
379 | ||
380 | if (!psapi_loaded || | |
8e860359 CF |
381 | psapi_EnumProcessModules == NULL || |
382 | psapi_GetModuleInformation == NULL || | |
383 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d | 384 | { |
8e860359 CF |
385 | if (psapi_loaded) |
386 | goto failed; | |
c2d11a7d JM |
387 | psapi_loaded = 1; |
388 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
389 | if (!psapi_module_handle) | |
8e860359 CF |
390 | { |
391 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
392 | goto failed; | |
393 | } | |
394 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
c2d11a7d JM |
395 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
396 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
397 | "GetModuleFileNameExA"); |
398 | if (psapi_EnumProcessModules == NULL || | |
399 | psapi_GetModuleInformation == NULL || | |
400 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d JM |
401 | goto failed; |
402 | } | |
403 | ||
404 | cbNeeded = 0; | |
405 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
406 | DllHandle, |
407 | sizeof (HMODULE), | |
408 | &cbNeeded); | |
c2d11a7d JM |
409 | |
410 | if (!ok || !cbNeeded) | |
411 | goto failed; | |
412 | ||
8e860359 | 413 | DllHandle = (HMODULE *) alloca (cbNeeded); |
c2d11a7d JM |
414 | if (!DllHandle) |
415 | goto failed; | |
416 | ||
417 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
418 | DllHandle, |
419 | cbNeeded, | |
420 | &cbNeeded); | |
c2d11a7d JM |
421 | if (!ok) |
422 | goto failed; | |
423 | ||
29fe111d | 424 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
c2d11a7d JM |
425 | { |
426 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
427 | DllHandle[i], |
428 | &mi, | |
429 | sizeof (mi))) | |
c2d11a7d JM |
430 | error ("Can't get module info"); |
431 | ||
432 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
433 | DllHandle[i], |
434 | dll_name_ret, | |
435 | MAX_PATH); | |
c2d11a7d | 436 | if (len == 0) |
29fe111d | 437 | error ("Error getting dll name: %u\n", GetLastError ()); |
c2d11a7d JM |
438 | |
439 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
440 | return 1; | |
441 | } | |
442 | ||
443 | failed: | |
444 | dll_name_ret[0] = '\0'; | |
445 | return 0; | |
446 | } | |
447 | ||
450005e7 CF |
448 | /* Encapsulate the information required in a call to |
449 | symbol_file_add_args */ | |
8a892701 CF |
450 | struct safe_symbol_file_add_args |
451 | { | |
452 | char *name; | |
453 | int from_tty; | |
454 | struct section_addr_info *addrs; | |
455 | int mainline; | |
456 | int flags; | |
7c5c87c0 | 457 | struct ui_file *err, *out; |
8a892701 CF |
458 | struct objfile *ret; |
459 | }; | |
460 | ||
02e423b9 CF |
461 | /* Maintain a linked list of "so" information. */ |
462 | struct so_stuff | |
463 | { | |
d3ff4a77 | 464 | struct so_stuff *next; |
02e423b9 | 465 | DWORD load_addr; |
7470a420 | 466 | int loaded; |
d3ff4a77 | 467 | struct objfile *objfile; |
7470a420 CF |
468 | char name[1]; |
469 | } solib_start, *solib_end; | |
02e423b9 | 470 | |
450005e7 CF |
471 | /* Call symbol_file_add with stderr redirected. We don't care if there |
472 | are errors. */ | |
8a892701 CF |
473 | static int |
474 | safe_symbol_file_add_stub (void *argv) | |
475 | { | |
476 | #define p ((struct safe_symbol_file_add_args *)argv) | |
fefd0a37 | 477 | struct so_stuff *so = &solib_start; |
02e423b9 CF |
478 | |
479 | while ((so = so->next)) | |
7470a420 | 480 | if (so->loaded && strcasecmp (so->name, p->name) == 0) |
02e423b9 | 481 | return 0; |
8a892701 CF |
482 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
483 | return !!p->ret; | |
484 | #undef p | |
485 | } | |
486 | ||
450005e7 | 487 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 488 | static void |
7c5c87c0 | 489 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 490 | { |
8e860359 | 491 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 492 | gdb_flush (gdb_stderr); |
7c5c87c0 | 493 | gdb_flush (gdb_stdout); |
d3ff4a77 | 494 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 495 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 496 | gdb_stderr = sp->err; |
9d3789f7 | 497 | gdb_stdout = sp->out; |
8e860359 | 498 | #undef sp |
8a892701 CF |
499 | } |
500 | ||
450005e7 | 501 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
502 | static struct objfile * |
503 | safe_symbol_file_add (char *name, int from_tty, | |
504 | struct section_addr_info *addrs, | |
505 | int mainline, int flags) | |
8a892701 CF |
506 | { |
507 | struct safe_symbol_file_add_args p; | |
508 | struct cleanup *cleanup; | |
509 | ||
7c5c87c0 | 510 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 511 | |
7c5c87c0 CF |
512 | p.err = gdb_stderr; |
513 | p.out = gdb_stdout; | |
450005e7 | 514 | gdb_flush (gdb_stderr); |
7c5c87c0 | 515 | gdb_flush (gdb_stdout); |
d3ff4a77 | 516 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 517 | gdb_stdout = ui_file_new (); |
8a892701 CF |
518 | p.name = name; |
519 | p.from_tty = from_tty; | |
520 | p.addrs = addrs; | |
521 | p.mainline = mainline; | |
522 | p.flags = flags; | |
523 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
524 | ||
525 | do_cleanups (cleanup); | |
526 | return p.ret; | |
527 | } | |
528 | ||
450005e7 CF |
529 | /* Remember the maximum DLL length for printing in info dll command. */ |
530 | int max_dll_name_len; | |
531 | ||
8e860359 CF |
532 | static void |
533 | register_loaded_dll (const char *name, DWORD load_addr) | |
534 | { | |
535 | struct so_stuff *so; | |
7470a420 | 536 | char ppath[MAX_PATH + 1]; |
3f8ad85b CF |
537 | char buf[MAX_PATH + 1]; |
538 | char cwd[MAX_PATH + 1]; | |
539 | char *p; | |
540 | WIN32_FIND_DATA w32_fd; | |
541 | HANDLE h = FindFirstFile(name, &w32_fd); | |
542 | size_t len; | |
543 | ||
544 | FindClose (h); | |
545 | strcpy (buf, name); | |
546 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
547 | { | |
548 | p = strrchr (buf, '\\'); | |
549 | if (p) | |
550 | p[1] = '\0'; | |
551 | SetCurrentDirectory (buf); | |
552 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
553 | SetCurrentDirectory (cwd); | |
554 | } | |
555 | ||
556 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
557 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
558 | so->loaded = 0; | |
8e860359 | 559 | so->load_addr = load_addr; |
d3ff4a77 CF |
560 | so->next = NULL; |
561 | so->objfile = NULL; | |
7470a420 | 562 | strcpy (so->name, ppath); |
8e860359 CF |
563 | |
564 | solib_end->next = so; | |
565 | solib_end = so; | |
3f8ad85b CF |
566 | len = strlen (ppath); |
567 | if (len > max_dll_name_len) | |
568 | max_dll_name_len = len; | |
8e860359 CF |
569 | } |
570 | ||
c906108c SS |
571 | /* Wait for child to do something. Return pid of child, or -1 in case |
572 | of error; store status through argument pointer OURSTATUS. */ | |
c906108c | 573 | static int |
554cb486 | 574 | handle_load_dll (void *dummy ATTRIBUTE_UNUSED) |
c906108c | 575 | { |
c5aa993b | 576 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
c906108c SS |
577 | DWORD dll_name_ptr; |
578 | DWORD done; | |
579 | char dll_buf[MAX_PATH + 1]; | |
450005e7 | 580 | char *dll_name = NULL; |
450005e7 | 581 | char *p; |
c906108c | 582 | |
c5aa993b | 583 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 584 | |
c2d11a7d | 585 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 586 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 587 | |
c2d11a7d | 588 | dll_name = dll_buf; |
c906108c SS |
589 | |
590 | /* Attempt to read the name of the dll that was detected. | |
591 | This is documented to work only when actively debugging | |
592 | a program. It will not work for attached processes. */ | |
593 | if (dll_name == NULL || *dll_name == '\0') | |
594 | { | |
29fe111d | 595 | DWORD size = event->fUnicode ? sizeof (WCHAR) : sizeof (char); |
c906108c SS |
596 | int len = 0; |
597 | char b[2]; | |
598 | ||
599 | ReadProcessMemory (current_process_handle, | |
600 | (LPCVOID) event->lpImageName, | |
601 | (char *) &dll_name_ptr, | |
602 | sizeof (dll_name_ptr), &done); | |
603 | ||
604 | /* See if we could read the address of a string, and that the | |
3bccec63 | 605 | address isn't null. */ |
c906108c SS |
606 | |
607 | if (done != sizeof (dll_name_ptr) || !dll_name_ptr) | |
608 | return 1; | |
609 | ||
610 | do | |
611 | { | |
612 | ReadProcessMemory (current_process_handle, | |
613 | (LPCVOID) (dll_name_ptr + len * size), | |
614 | &b, | |
615 | size, | |
616 | &done); | |
617 | len++; | |
618 | } | |
619 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
620 | ||
621 | dll_name = alloca (len); | |
622 | ||
623 | if (event->fUnicode) | |
624 | { | |
625 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
626 | ReadProcessMemory (current_process_handle, | |
627 | (LPCVOID) dll_name_ptr, | |
628 | unicode_dll_name, | |
629 | len * sizeof (WCHAR), | |
630 | &done); | |
631 | ||
632 | WideCharToMultiByte (CP_ACP, 0, | |
633 | unicode_dll_name, len, | |
634 | dll_name, len, 0, 0); | |
635 | } | |
636 | else | |
637 | { | |
638 | ReadProcessMemory (current_process_handle, | |
639 | (LPCVOID) dll_name_ptr, | |
640 | dll_name, | |
641 | len, | |
642 | &done); | |
643 | } | |
644 | } | |
645 | ||
646 | if (!dll_name) | |
647 | return 1; | |
648 | ||
8e860359 | 649 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
650 | |
651 | return 1; | |
652 | } | |
653 | ||
d3ff4a77 CF |
654 | static int |
655 | handle_unload_dll (void *dummy ATTRIBUTE_UNUSED) | |
656 | { | |
657 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
658 | struct so_stuff *so; | |
659 | ||
660 | for (so = &solib_start; so->next != NULL; so = so->next) | |
661 | if (so->next->load_addr == lpBaseOfDll) | |
662 | { | |
663 | struct so_stuff *sodel = so->next; | |
664 | so->next = sodel->next; | |
665 | if (!so->next) | |
666 | solib_end = so; | |
667 | if (sodel->objfile) | |
668 | free_objfile (sodel->objfile); | |
669 | xfree(sodel); | |
670 | return 1; | |
671 | } | |
672 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
673 | ||
674 | return 0; | |
675 | } | |
676 | ||
450005e7 CF |
677 | /* Return name of last loaded DLL. */ |
678 | char * | |
9d3789f7 | 679 | child_solib_loaded_library_pathname (int pid ATTRIBUTE_UNUSED) |
450005e7 | 680 | { |
8e860359 | 681 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
682 | } |
683 | ||
684 | /* Clear list of loaded DLLs. */ | |
685 | void | |
686 | child_clear_solibs (void) | |
687 | { | |
688 | struct so_stuff *so, *so1 = solib_start.next; | |
689 | ||
690 | while ((so = so1) != NULL) | |
691 | { | |
692 | so1 = so->next; | |
b8c9b27d | 693 | xfree (so); |
450005e7 CF |
694 | } |
695 | ||
696 | solib_start.next = NULL; | |
d3ff4a77 | 697 | solib_start.objfile = NULL; |
450005e7 CF |
698 | solib_end = &solib_start; |
699 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
700 | } | |
701 | ||
702 | /* Add DLL symbol information. */ | |
d3ff4a77 | 703 | static struct objfile * |
02e423b9 | 704 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 CF |
705 | { |
706 | struct section_addr_info section_addrs; | |
707 | ||
c906108c SS |
708 | /* The symbols in a dll are offset by 0x1000, which is the |
709 | the offset from 0 of the first byte in an image - because | |
8a892701 | 710 | of the file header and the section alignment. */ |
c906108c | 711 | |
8e860359 | 712 | if (!name || !name[0]) |
d3ff4a77 | 713 | return NULL; |
450005e7 CF |
714 | |
715 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 716 | section_addrs.other[0].name = ".text"; |
8e860359 | 717 | section_addrs.other[0].addr = load_addr; |
d3ff4a77 | 718 | return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED); |
450005e7 CF |
719 | } |
720 | ||
721 | /* Load DLL symbol info. */ | |
722 | void | |
7470a420 | 723 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 724 | { |
8e860359 | 725 | int n; |
450005e7 | 726 | dont_repeat (); |
8e860359 | 727 | |
450005e7 CF |
728 | if (args == NULL) |
729 | error ("dll-symbols requires a file name"); | |
730 | ||
8e860359 CF |
731 | n = strlen (args); |
732 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
733 | { | |
734 | char *newargs = (char *) alloca (n + 4 + 1); | |
735 | strcpy (newargs, args); | |
736 | strcat (newargs, ".dll"); | |
737 | args = newargs; | |
738 | } | |
739 | ||
7470a420 | 740 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 741 | } |
450005e7 CF |
742 | |
743 | /* List currently loaded DLLs. */ | |
744 | void | |
9d3789f7 | 745 | info_dll_command (char *ignore ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
450005e7 CF |
746 | { |
747 | struct so_stuff *so = &solib_start; | |
748 | ||
749 | if (!so->next) | |
750 | return; | |
751 | ||
752 | printf ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); | |
753 | while ((so = so->next) != NULL) | |
7c5c87c0 | 754 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
755 | |
756 | return; | |
c906108c SS |
757 | } |
758 | ||
759 | /* Handle DEBUG_STRING output from child process. | |
760 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
761 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
762 | static int | |
763 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
764 | { | |
765 | char *s; | |
766 | int gotasig = FALSE; | |
767 | ||
768 | if (!target_read_string | |
c5aa993b | 769 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
c906108c SS |
770 | || !s || !*s) |
771 | return gotasig; | |
772 | ||
ed9a39eb | 773 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
c906108c | 774 | { |
ed9a39eb | 775 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 776 | warning ("%s", s); |
c906108c | 777 | } |
ed9a39eb | 778 | else |
c906108c SS |
779 | { |
780 | char *p; | |
c2d11a7d JM |
781 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
782 | gotasig = target_signal_from_host (sig); | |
7a292a7a SS |
783 | ourstatus->value.sig = gotasig; |
784 | if (gotasig) | |
c906108c SS |
785 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
786 | } | |
787 | ||
b8c9b27d | 788 | xfree (s); |
c906108c SS |
789 | return gotasig; |
790 | } | |
791 | ||
792 | static int | |
450005e7 | 793 | handle_exception (struct target_waitstatus *ourstatus) |
c906108c | 794 | { |
c906108c | 795 | thread_info *th; |
29fe111d | 796 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
c906108c | 797 | |
29fe111d | 798 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 799 | |
c906108c SS |
800 | /* Record the context of the current thread */ |
801 | th = thread_rec (current_event.dwThreadId, -1); | |
802 | ||
29fe111d | 803 | switch (code) |
c906108c SS |
804 | { |
805 | case EXCEPTION_ACCESS_VIOLATION: | |
29fe111d | 806 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n", |
8e860359 | 807 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 808 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
8a892701 | 809 | last_sig = SIGSEGV; |
c906108c | 810 | break; |
0d06e24b JM |
811 | case STATUS_FLOAT_UNDERFLOW: |
812 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
813 | case STATUS_FLOAT_OVERFLOW: | |
814 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
29fe111d | 815 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 816 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
0d06e24b | 817 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
29fe111d | 818 | last_sig = SIGFPE; |
0d06e24b | 819 | break; |
c906108c | 820 | case STATUS_STACK_OVERFLOW: |
29fe111d | 821 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 822 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
823 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
824 | break; | |
825 | case EXCEPTION_BREAKPOINT: | |
29fe111d | 826 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n", |
8e860359 | 827 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
828 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
829 | break; | |
830 | case DBG_CONTROL_C: | |
29fe111d | 831 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n", |
8e860359 | 832 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 833 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
8a892701 | 834 | last_sig = SIGINT; /* FIXME - should check pass state */ |
c906108c SS |
835 | break; |
836 | case EXCEPTION_SINGLE_STEP: | |
29fe111d | 837 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n", |
8e860359 | 838 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
839 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
840 | break; | |
8227c82d | 841 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
29fe111d | 842 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n", |
8e860359 | 843 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
8227c82d | 844 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
8a892701 | 845 | last_sig = SIGILL; |
8227c82d | 846 | break; |
c906108c | 847 | default: |
02e423b9 CF |
848 | if (current_event.u.Exception.dwFirstChance) |
849 | return 0; | |
29fe111d | 850 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
c5aa993b | 851 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 852 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
c906108c SS |
853 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
854 | break; | |
855 | } | |
856 | exception_count++; | |
857 | return 1; | |
858 | } | |
859 | ||
860 | /* Resume all artificially suspended threads if we are continuing | |
861 | execution */ | |
862 | static BOOL | |
8a892701 | 863 | child_continue (DWORD continue_status, int id) |
c906108c SS |
864 | { |
865 | int i; | |
866 | thread_info *th; | |
867 | BOOL res; | |
868 | ||
29fe111d | 869 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n", |
c906108c | 870 | current_event.dwProcessId, current_event.dwThreadId)); |
7a292a7a SS |
871 | res = ContinueDebugEvent (current_event.dwProcessId, |
872 | current_event.dwThreadId, | |
873 | continue_status); | |
c2d11a7d | 874 | continue_status = 0; |
7a292a7a | 875 | if (res) |
c5aa993b | 876 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 877 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
c906108c SS |
878 | { |
879 | for (i = 0; i < th->suspend_count; i++) | |
880 | (void) ResumeThread (th->h); | |
881 | th->suspend_count = 0; | |
882 | } | |
883 | ||
884 | return res; | |
885 | } | |
886 | ||
8a892701 CF |
887 | /* Get the next event from the child. Return 1 if the event requires |
888 | handling by WFI (or whatever). | |
889 | */ | |
c2d11a7d | 890 | static int |
450005e7 | 891 | get_child_debug_event (int pid ATTRIBUTE_UNUSED, struct target_waitstatus *ourstatus) |
c2d11a7d JM |
892 | { |
893 | BOOL debug_event; | |
8a892701 CF |
894 | DWORD continue_status, event_code; |
895 | thread_info *th = NULL; | |
896 | static thread_info dummy_thread_info; | |
450005e7 | 897 | int retval = 0; |
c2d11a7d | 898 | |
9d3789f7 CF |
899 | last_sig = 0; |
900 | ||
8a892701 | 901 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 902 | goto out; |
c2d11a7d JM |
903 | |
904 | event_count++; | |
905 | continue_status = DBG_CONTINUE; | |
c2d11a7d | 906 | |
8a892701 | 907 | event_code = current_event.dwDebugEventCode; |
450005e7 | 908 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
909 | |
910 | switch (event_code) | |
c2d11a7d JM |
911 | { |
912 | case CREATE_THREAD_DEBUG_EVENT: | |
913 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
914 | (unsigned) current_event.dwProcessId, |
915 | (unsigned) current_event.dwThreadId, | |
916 | "CREATE_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 917 | /* Record the existence of this thread */ |
8a892701 CF |
918 | th = child_add_thread (current_event.dwThreadId, |
919 | current_event.u.CreateThread.hThread); | |
c2d11a7d JM |
920 | if (info_verbose) |
921 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
922 | target_pid_to_str ( |
923 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 924 | retval = current_event.dwThreadId; |
c2d11a7d JM |
925 | break; |
926 | ||
927 | case EXIT_THREAD_DEBUG_EVENT: | |
928 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
929 | (unsigned) current_event.dwProcessId, |
930 | (unsigned) current_event.dwThreadId, | |
931 | "EXIT_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 932 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 933 | th = &dummy_thread_info; |
c2d11a7d JM |
934 | break; |
935 | ||
936 | case CREATE_PROCESS_DEBUG_EVENT: | |
937 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
938 | (unsigned) current_event.dwProcessId, |
939 | (unsigned) current_event.dwThreadId, | |
940 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 941 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
c2d11a7d JM |
942 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
943 | ||
9d3789f7 | 944 | main_thread_id = current_event.dwThreadId; |
c2d11a7d | 945 | /* Add the main thread */ |
9d3789f7 | 946 | #if 0 |
450005e7 CF |
947 | th = child_add_thread (current_event.dwProcessId, |
948 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
949 | #endif |
950 | th = child_add_thread (main_thread_id, | |
8a892701 | 951 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 952 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
c2d11a7d JM |
953 | break; |
954 | ||
955 | case EXIT_PROCESS_DEBUG_EVENT: | |
956 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
957 | (unsigned) current_event.dwProcessId, |
958 | (unsigned) current_event.dwThreadId, | |
959 | "EXIT_PROCESS_DEBUG_EVENT")); | |
c2d11a7d JM |
960 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
961 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
962 | CloseHandle (current_process_handle); | |
9d3789f7 | 963 | retval = main_thread_id; |
8a892701 | 964 | break; |
c2d11a7d JM |
965 | |
966 | case LOAD_DLL_DEBUG_EVENT: | |
967 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
968 | (unsigned) current_event.dwProcessId, |
969 | (unsigned) current_event.dwThreadId, | |
970 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 971 | CloseHandle (current_event.u.LoadDll.hFile); |
8a892701 | 972 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
c2d11a7d | 973 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
974 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
975 | ourstatus->value.integer = 0; | |
9d3789f7 | 976 | retval = main_thread_id; |
c2d11a7d JM |
977 | break; |
978 | ||
979 | case UNLOAD_DLL_DEBUG_EVENT: | |
980 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
981 | (unsigned) current_event.dwProcessId, |
982 | (unsigned) current_event.dwThreadId, | |
983 | "UNLOAD_DLL_DEBUG_EVENT")); | |
d3ff4a77 CF |
984 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
985 | registers_changed (); /* mark all regs invalid */ | |
986 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
3bccec63 | 987 | does not exist yet. */ |
d3ff4a77 | 988 | break; |
c2d11a7d JM |
989 | |
990 | case EXCEPTION_DEBUG_EVENT: | |
991 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
992 | (unsigned) current_event.dwProcessId, |
993 | (unsigned) current_event.dwThreadId, | |
994 | "EXCEPTION_DEBUG_EVENT")); | |
02e423b9 CF |
995 | if (handle_exception (ourstatus)) |
996 | retval = current_event.dwThreadId; | |
c2d11a7d JM |
997 | break; |
998 | ||
8a892701 | 999 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
c2d11a7d | 1000 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1001 | (unsigned) current_event.dwProcessId, |
1002 | (unsigned) current_event.dwThreadId, | |
1003 | "OUTPUT_DEBUG_STRING_EVENT")); | |
8e860359 | 1004 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 1005 | retval = main_thread_id; |
c2d11a7d | 1006 | break; |
9d3789f7 | 1007 | |
c2d11a7d | 1008 | default: |
29fe111d CF |
1009 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1010 | (DWORD) current_event.dwProcessId, | |
1011 | (DWORD) current_event.dwThreadId); | |
1012 | printf_unfiltered (" unknown event code %ld\n", | |
c2d11a7d JM |
1013 | current_event.dwDebugEventCode); |
1014 | break; | |
1015 | } | |
1016 | ||
450005e7 | 1017 | if (!retval) |
8a892701 | 1018 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 1019 | else |
9d3789f7 | 1020 | { |
8e860359 | 1021 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1022 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1023 | } |
c2d11a7d JM |
1024 | |
1025 | out: | |
450005e7 | 1026 | return retval; |
c2d11a7d JM |
1027 | } |
1028 | ||
c2d11a7d | 1029 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1030 | static ptid_t |
1031 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
c906108c | 1032 | { |
39f77062 KB |
1033 | int pid = PIDGET (ptid); |
1034 | ||
c906108c SS |
1035 | /* We loop when we get a non-standard exception rather than return |
1036 | with a SPURIOUS because resume can try and step or modify things, | |
1037 | which needs a current_thread->h. But some of these exceptions mark | |
1038 | the birth or death of threads, which mean that the current thread | |
1039 | isn't necessarily what you think it is. */ | |
1040 | ||
1041 | while (1) | |
450005e7 CF |
1042 | { |
1043 | int retval = get_child_debug_event (pid, ourstatus); | |
1044 | if (retval) | |
39f77062 | 1045 | return pid_to_ptid (retval); |
450005e7 CF |
1046 | else |
1047 | { | |
1048 | int detach = 0; | |
c906108c | 1049 | |
450005e7 CF |
1050 | if (ui_loop_hook != NULL) |
1051 | detach = ui_loop_hook (0); | |
7a292a7a | 1052 | |
450005e7 CF |
1053 | if (detach) |
1054 | child_kill_inferior (); | |
1055 | } | |
1056 | } | |
c906108c SS |
1057 | } |
1058 | ||
9d3789f7 CF |
1059 | static void |
1060 | do_initial_child_stuff (DWORD pid) | |
1061 | { | |
1062 | extern int stop_after_trap; | |
1063 | ||
1064 | last_sig = 0; | |
1065 | event_count = 0; | |
1066 | exception_count = 0; | |
1067 | current_event.dwProcessId = pid; | |
1068 | memset (¤t_event, 0, sizeof (current_event)); | |
1069 | push_target (&child_ops); | |
1070 | child_init_thread_list (); | |
1071 | child_clear_solibs (); | |
1072 | clear_proceed_status (); | |
1073 | init_wait_for_inferior (); | |
1074 | ||
1075 | target_terminal_init (); | |
1076 | target_terminal_inferior (); | |
1077 | ||
1078 | while (1) | |
1079 | { | |
1080 | stop_after_trap = 1; | |
1081 | wait_for_inferior (); | |
1082 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1083 | resume (0, stop_signal); | |
1084 | else | |
1085 | break; | |
1086 | } | |
1087 | stop_after_trap = 0; | |
1088 | return; | |
1089 | } | |
1090 | ||
02cc9f49 CV |
1091 | /* Since Windows XP, detaching from a process is supported by Windows. |
1092 | The following code tries loading the appropriate functions dynamically. | |
1093 | If loading these functions succeeds use them to actually detach from | |
1094 | the inferior process, otherwise behave as usual, pretending that | |
1095 | detach has worked. */ | |
1096 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1097 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1098 | ||
1099 | static int | |
1100 | has_detach_ability () | |
1101 | { | |
1102 | static HMODULE kernel32 = NULL; | |
1103 | ||
1104 | if (!kernel32) | |
1105 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1106 | if (kernel32) | |
1107 | { | |
1108 | if (!DebugSetProcessKillOnExit) | |
1109 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1110 | "DebugSetProcessKillOnExit"); | |
1111 | if (!DebugActiveProcessStop) | |
1112 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1113 | "DebugActiveProcessStop"); | |
1114 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1115 | return 1; | |
1116 | } | |
1117 | return 0; | |
1118 | } | |
c906108c | 1119 | |
02cc9f49 | 1120 | /* Attach to process PID, then initialize for debugging it. */ |
c906108c | 1121 | static void |
fba45db2 | 1122 | child_attach (char *args, int from_tty) |
c906108c SS |
1123 | { |
1124 | BOOL ok; | |
559e75c0 | 1125 | DWORD pid; |
c906108c SS |
1126 | |
1127 | if (!args) | |
1128 | error_no_arg ("process-id to attach"); | |
1129 | ||
559e75c0 | 1130 | pid = strtoul (args, 0, 0); |
9d3789f7 | 1131 | ok = DebugActiveProcess (pid); |
c906108c SS |
1132 | |
1133 | if (!ok) | |
1134 | error ("Can't attach to process."); | |
1135 | ||
02cc9f49 CV |
1136 | if (has_detach_ability ()) |
1137 | { | |
1138 | attach_flag = 1; | |
1139 | DebugSetProcessKillOnExit (FALSE); | |
1140 | } | |
1141 | ||
c906108c SS |
1142 | if (from_tty) |
1143 | { | |
1144 | char *exec_file = (char *) get_exec_file (0); | |
1145 | ||
1146 | if (exec_file) | |
1147 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1148 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1149 | else |
1150 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1151 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1152 | |
1153 | gdb_flush (gdb_stdout); | |
1154 | } | |
1155 | ||
9d3789f7 CF |
1156 | do_initial_child_stuff (pid); |
1157 | target_terminal_ours (); | |
c906108c SS |
1158 | } |
1159 | ||
1160 | static void | |
29fe111d | 1161 | child_detach (char *args ATTRIBUTE_UNUSED, int from_tty) |
c906108c | 1162 | { |
02cc9f49 CV |
1163 | int detached = 1; |
1164 | ||
1165 | if (has_detach_ability ()) | |
1166 | { | |
1167 | delete_command (NULL, 0); | |
1168 | child_continue (DBG_CONTINUE, -1); | |
1169 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
3bccec63 | 1170 | { |
02cc9f49 CV |
1171 | error ("Can't detach process %lu (error %lu)", |
1172 | current_event.dwProcessId, GetLastError ()); | |
1173 | detached = 0; | |
3bccec63 | 1174 | } |
02cc9f49 CV |
1175 | DebugSetProcessKillOnExit (FALSE); |
1176 | } | |
1177 | if (detached && from_tty) | |
c906108c SS |
1178 | { |
1179 | char *exec_file = get_exec_file (0); | |
1180 | if (exec_file == 0) | |
1181 | exec_file = ""; | |
02cc9f49 CV |
1182 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1183 | current_event.dwProcessId); | |
c906108c SS |
1184 | gdb_flush (gdb_stdout); |
1185 | } | |
39f77062 | 1186 | inferior_ptid = null_ptid; |
c906108c SS |
1187 | unpush_target (&child_ops); |
1188 | } | |
1189 | ||
1190 | /* Print status information about what we're accessing. */ | |
1191 | ||
1192 | static void | |
29fe111d | 1193 | child_files_info (struct target_ops *ignore ATTRIBUTE_UNUSED) |
c906108c SS |
1194 | { |
1195 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1196 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
1197 | } |
1198 | ||
1199 | /* ARGSUSED */ | |
1200 | static void | |
29fe111d | 1201 | child_open (char *arg ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
c906108c SS |
1202 | { |
1203 | error ("Use the \"run\" command to start a Unix child process."); | |
1204 | } | |
1205 | ||
39f77062 | 1206 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
c906108c SS |
1207 | EXEC_FILE is the file to run. |
1208 | ALLARGS is a string containing the arguments to the program. | |
1209 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1210 | ||
1211 | static void | |
fba45db2 | 1212 | child_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c SS |
1213 | { |
1214 | char real_path[MAXPATHLEN]; | |
1215 | char *winenv; | |
1216 | char *temp; | |
c5aa993b | 1217 | int envlen; |
c906108c | 1218 | int i; |
c906108c SS |
1219 | STARTUPINFO si; |
1220 | PROCESS_INFORMATION pi; | |
c906108c SS |
1221 | BOOL ret; |
1222 | DWORD flags; | |
1223 | char *args; | |
1224 | ||
1225 | if (!exec_file) | |
450005e7 | 1226 | error ("No executable specified, use `target exec'.\n"); |
c906108c SS |
1227 | |
1228 | memset (&si, 0, sizeof (si)); | |
1229 | si.cb = sizeof (si); | |
1230 | ||
29fe111d | 1231 | cygwin_conv_to_win32_path (exec_file, real_path); |
c906108c SS |
1232 | |
1233 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1234 | ||
1235 | if (new_group) | |
1236 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1237 | ||
1238 | if (new_console) | |
1239 | flags |= CREATE_NEW_CONSOLE; | |
1240 | ||
1241 | args = alloca (strlen (real_path) + strlen (allargs) + 2); | |
1242 | ||
1243 | strcpy (args, real_path); | |
1244 | ||
1245 | strcat (args, " "); | |
1246 | strcat (args, allargs); | |
1247 | ||
1248 | /* Prepare the environment vars for CreateProcess. */ | |
1249 | { | |
1250 | /* This code use to assume all env vars were file names and would | |
1251 | translate them all to win32 style. That obviously doesn't work in the | |
1252 | general case. The current rule is that we only translate PATH. | |
1253 | We need to handle PATH because we're about to call CreateProcess and | |
1254 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1255 | in both posix and win32 environments. cygwin.dll will change it back | |
1256 | to posix style if necessary. */ | |
1257 | ||
1258 | static const char *conv_path_names[] = | |
c5aa993b JM |
1259 | { |
1260 | "PATH=", | |
1261 | 0 | |
1262 | }; | |
c906108c SS |
1263 | |
1264 | /* CreateProcess takes the environment list as a null terminated set of | |
1265 | strings (i.e. two nulls terminate the list). */ | |
1266 | ||
1267 | /* Get total size for env strings. */ | |
1268 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1269 | { | |
1270 | int j, len; | |
1271 | ||
1272 | for (j = 0; conv_path_names[j]; j++) | |
1273 | { | |
1274 | len = strlen (conv_path_names[j]); | |
1275 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1276 | { | |
29fe111d | 1277 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c | 1278 | envlen += len |
29fe111d | 1279 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
c906108c SS |
1280 | else |
1281 | envlen += strlen (env[i]) + 1; | |
1282 | break; | |
1283 | } | |
1284 | } | |
1285 | if (conv_path_names[j] == NULL) | |
1286 | envlen += strlen (env[i]) + 1; | |
1287 | } | |
1288 | ||
1289 | winenv = alloca (envlen + 1); | |
1290 | ||
1291 | /* Copy env strings into new buffer. */ | |
1292 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) | |
1293 | { | |
1294 | int j, len; | |
1295 | ||
1296 | for (j = 0; conv_path_names[j]; j++) | |
1297 | { | |
1298 | len = strlen (conv_path_names[j]); | |
1299 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1300 | { | |
29fe111d | 1301 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c SS |
1302 | { |
1303 | memcpy (temp, env[i], len); | |
29fe111d | 1304 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
c906108c SS |
1305 | } |
1306 | else | |
1307 | strcpy (temp, env[i]); | |
1308 | break; | |
1309 | } | |
1310 | } | |
1311 | if (conv_path_names[j] == NULL) | |
1312 | strcpy (temp, env[i]); | |
1313 | ||
1314 | temp += strlen (temp) + 1; | |
1315 | } | |
1316 | ||
1317 | /* Final nil string to terminate new env. */ | |
1318 | *temp = 0; | |
1319 | } | |
1320 | ||
1321 | ret = CreateProcess (0, | |
c5aa993b | 1322 | args, /* command line */ |
c906108c SS |
1323 | NULL, /* Security */ |
1324 | NULL, /* thread */ | |
1325 | TRUE, /* inherit handles */ | |
1326 | flags, /* start flags */ | |
1327 | winenv, | |
1328 | NULL, /* current directory */ | |
1329 | &si, | |
1330 | &pi); | |
1331 | if (!ret) | |
c5aa993b | 1332 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
c906108c | 1333 | |
700b351b CF |
1334 | CloseHandle (pi.hThread); |
1335 | CloseHandle (pi.hProcess); | |
9d3789f7 | 1336 | do_initial_child_stuff (pi.dwProcessId); |
ed9a39eb | 1337 | |
8e860359 | 1338 | /* child_continue (DBG_CONTINUE, -1); */ |
c2d11a7d | 1339 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
c906108c SS |
1340 | } |
1341 | ||
1342 | static void | |
fba45db2 | 1343 | child_mourn_inferior (void) |
c906108c | 1344 | { |
8a892701 | 1345 | (void) child_continue (DBG_CONTINUE, -1); |
c906108c SS |
1346 | unpush_target (&child_ops); |
1347 | generic_mourn_inferior (); | |
1348 | } | |
1349 | ||
1350 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
1351 | ^C on the controlling terminal. */ | |
1352 | ||
1353 | static void | |
fba45db2 | 1354 | child_stop (void) |
c906108c SS |
1355 | { |
1356 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); | |
c2d11a7d | 1357 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
c5aa993b | 1358 | registers_changed (); /* refresh register state */ |
c906108c SS |
1359 | } |
1360 | ||
1361 | int | |
1362 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
56c40d46 | 1363 | int write, struct mem_attrib *mem ATTRIBUTE_UNUSED, |
aea02b6b | 1364 | struct target_ops *target ATTRIBUTE_UNUSED) |
c906108c SS |
1365 | { |
1366 | DWORD done; | |
1367 | if (write) | |
1368 | { | |
29fe111d CF |
1369 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1370 | len, (DWORD) memaddr)); | |
c906108c SS |
1371 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1372 | len, &done); | |
1373 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
1374 | } | |
1375 | else | |
1376 | { | |
29fe111d CF |
1377 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1378 | len, (DWORD) memaddr)); | |
c906108c SS |
1379 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1380 | &done); | |
1381 | } | |
1382 | return done; | |
1383 | } | |
1384 | ||
1385 | void | |
1386 | child_kill_inferior (void) | |
1387 | { | |
1388 | CHECK (TerminateProcess (current_process_handle, 0)); | |
1389 | ||
1390 | for (;;) | |
1391 | { | |
8a892701 | 1392 | if (!child_continue (DBG_CONTINUE, -1)) |
c906108c SS |
1393 | break; |
1394 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
1395 | break; | |
1396 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
1397 | break; | |
1398 | } | |
1399 | ||
1400 | CHECK (CloseHandle (current_process_handle)); | |
1401 | ||
1402 | /* this may fail in an attached process so don't check. */ | |
1403 | (void) CloseHandle (current_thread->h); | |
c5aa993b | 1404 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
c906108c SS |
1405 | } |
1406 | ||
1407 | void | |
39f77062 | 1408 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c | 1409 | { |
c906108c | 1410 | thread_info *th; |
8a892701 | 1411 | DWORD continue_status = last_sig > 0 && last_sig < NSIG ? |
8e860359 | 1412 | DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE; |
39f77062 | 1413 | int pid = PIDGET (ptid); |
8a892701 CF |
1414 | |
1415 | last_sig = 0; | |
c906108c SS |
1416 | |
1417 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", | |
1418 | pid, step, sig)); | |
1419 | ||
1420 | /* Get context for currently selected thread */ | |
1421 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1422 | if (th) |
c906108c | 1423 | { |
450005e7 CF |
1424 | if (step) |
1425 | { | |
1426 | /* Single step by setting t bit */ | |
1427 | child_fetch_inferior_registers (PS_REGNUM); | |
1428 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1429 | } | |
c906108c | 1430 | |
450005e7 CF |
1431 | if (th->context.ContextFlags) |
1432 | { | |
1433 | CHECK (SetThreadContext (th->h, &th->context)); | |
1434 | th->context.ContextFlags = 0; | |
1435 | } | |
c906108c SS |
1436 | } |
1437 | ||
1438 | /* Allow continuing with the same signal that interrupted us. | |
1439 | Otherwise complain. */ | |
c906108c | 1440 | |
8a892701 | 1441 | child_continue (continue_status, pid); |
c906108c SS |
1442 | } |
1443 | ||
1444 | static void | |
fba45db2 | 1445 | child_prepare_to_store (void) |
c906108c SS |
1446 | { |
1447 | /* Do nothing, since we can store individual regs */ | |
1448 | } | |
1449 | ||
1450 | static int | |
fba45db2 | 1451 | child_can_run (void) |
c906108c SS |
1452 | { |
1453 | return 1; | |
1454 | } | |
1455 | ||
1456 | static void | |
9d3789f7 | 1457 | child_close (int x ATTRIBUTE_UNUSED) |
c906108c | 1458 | { |
39f77062 | 1459 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
3bccec63 | 1460 | PIDGET (inferior_ptid))); |
c906108c SS |
1461 | } |
1462 | ||
c5aa993b | 1463 | struct target_ops child_ops; |
c906108c | 1464 | |
c5aa993b JM |
1465 | static void |
1466 | init_child_ops (void) | |
c906108c | 1467 | { |
c5aa993b JM |
1468 | child_ops.to_shortname = "child"; |
1469 | child_ops.to_longname = "Win32 child process"; | |
1470 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1471 | child_ops.to_open = child_open; | |
1472 | child_ops.to_close = child_close; | |
1473 | child_ops.to_attach = child_attach; | |
1474 | child_ops.to_detach = child_detach; | |
1475 | child_ops.to_resume = child_resume; | |
1476 | child_ops.to_wait = child_wait; | |
1477 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1478 | child_ops.to_store_registers = child_store_inferior_registers; | |
1479 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1480 | child_ops.to_xfer_memory = child_xfer_memory; | |
1481 | child_ops.to_files_info = child_files_info; | |
1482 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1483 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1484 | child_ops.to_terminal_init = terminal_init_inferior; | |
1485 | child_ops.to_terminal_inferior = terminal_inferior; | |
1486 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1487 | child_ops.to_terminal_ours = terminal_ours; | |
1488 | child_ops.to_terminal_info = child_terminal_info; | |
1489 | child_ops.to_kill = child_kill_inferior; | |
1490 | child_ops.to_load = 0; | |
1491 | child_ops.to_lookup_symbol = 0; | |
1492 | child_ops.to_create_inferior = child_create_inferior; | |
1493 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1494 | child_ops.to_can_run = child_can_run; | |
1495 | child_ops.to_notice_signals = 0; | |
1496 | child_ops.to_thread_alive = win32_child_thread_alive; | |
ed9a39eb | 1497 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
c5aa993b JM |
1498 | child_ops.to_stop = child_stop; |
1499 | child_ops.to_stratum = process_stratum; | |
1500 | child_ops.DONT_USE = 0; | |
1501 | child_ops.to_has_all_memory = 1; | |
1502 | child_ops.to_has_memory = 1; | |
1503 | child_ops.to_has_stack = 1; | |
1504 | child_ops.to_has_registers = 1; | |
1505 | child_ops.to_has_execution = 1; | |
1506 | child_ops.to_sections = 0; | |
1507 | child_ops.to_sections_end = 0; | |
1508 | child_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
1509 | } |
1510 | ||
1511 | void | |
fba45db2 | 1512 | _initialize_inftarg (void) |
c906108c | 1513 | { |
fa58ee11 EZ |
1514 | struct cmd_list_element *c; |
1515 | ||
c5aa993b | 1516 | init_child_ops (); |
c906108c | 1517 | |
fa58ee11 EZ |
1518 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1519 | "Load dll library symbols from FILE."); | |
1520 | c->completer = filename_completer; | |
450005e7 CF |
1521 | |
1522 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
1523 | ||
1524 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, | |
8e860359 CF |
1525 | (char *) &new_console, |
1526 | "Set creation of new console when creating child process.", | |
1527 | &setlist), | |
1528 | &showlist); | |
c906108c | 1529 | |
450005e7 | 1530 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1531 | (char *) &new_group, |
1532 | "Set creation of new group when creating child process.", | |
1533 | &setlist), | |
1534 | &showlist); | |
c906108c | 1535 | |
450005e7 | 1536 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1537 | (char *) &debug_exec, |
1538 | "Set whether to display execution in child process.", | |
1539 | &setlist), | |
1540 | &showlist); | |
c906108c | 1541 | |
450005e7 | 1542 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1543 | (char *) &debug_events, |
1544 | "Set whether to display kernel events in child process.", | |
1545 | &setlist), | |
1546 | &showlist); | |
c906108c | 1547 | |
450005e7 | 1548 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1549 | (char *) &debug_memory, |
1550 | "Set whether to display memory accesses in child process.", | |
1551 | &setlist), | |
1552 | &showlist); | |
c906108c | 1553 | |
450005e7 | 1554 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1555 | (char *) &debug_exceptions, |
1556 | "Set whether to display kernel exceptions in child process.", | |
1557 | &setlist), | |
1558 | &showlist); | |
c906108c | 1559 | |
450005e7 CF |
1560 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1561 | add_info_alias ("sharedlibrary", "dll", 1); | |
1562 | ||
c906108c SS |
1563 | add_target (&child_ops); |
1564 | } | |
1565 | ||
1566 | /* Determine if the thread referenced by "pid" is alive | |
1567 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1568 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1569 | static int | |
39f77062 | 1570 | win32_child_thread_alive (ptid_t ptid) |
c906108c | 1571 | { |
39f77062 KB |
1572 | int pid = PIDGET (ptid); |
1573 | ||
c5aa993b JM |
1574 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1575 | FALSE : TRUE; | |
c906108c SS |
1576 | } |
1577 | ||
1578 | /* Convert pid to printable format. */ | |
1579 | char * | |
39f77062 | 1580 | cygwin_pid_to_str (ptid_t ptid) |
c906108c SS |
1581 | { |
1582 | static char buf[80]; | |
39f77062 KB |
1583 | int pid = PIDGET (ptid); |
1584 | ||
29fe111d | 1585 | if ((DWORD) pid == current_event.dwProcessId) |
c906108c SS |
1586 | sprintf (buf, "process %d", pid); |
1587 | else | |
29fe111d | 1588 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
c906108c SS |
1589 | return buf; |
1590 | } | |
8e860359 CF |
1591 | |
1592 | static int | |
1593 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1594 | { | |
1595 | struct objfile *objfile; | |
1596 | char *objfile_basename; | |
1597 | const char *dll_basename; | |
1598 | ||
1599 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1600 | dll_basename = dll_name; | |
1601 | else | |
1602 | dll_basename++; | |
1603 | ||
1604 | ALL_OBJFILES (objfile) | |
1605 | { | |
1606 | objfile_basename = strrchr (objfile->name, '/'); | |
1607 | ||
1608 | if (objfile_basename && | |
1609 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1610 | { | |
1611 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1612 | base_addr, dll_name); | |
1613 | goto out; | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 1618 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
1619 | |
1620 | out: | |
1621 | return 1; | |
1622 | } | |
1623 | ||
1624 | typedef struct | |
1625 | { | |
1626 | struct target_ops *target; | |
1627 | bfd_vma addr; | |
1628 | } | |
1629 | map_code_section_args; | |
1630 | ||
1631 | static void | |
554cb486 | 1632 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1633 | { |
1634 | int old; | |
1635 | int update_coreops; | |
1636 | struct section_table *new_target_sect_ptr; | |
1637 | ||
1638 | map_code_section_args *args = (map_code_section_args *) obj; | |
1639 | struct target_ops *target = args->target; | |
1640 | if (sect->flags & SEC_CODE) | |
1641 | { | |
1642 | update_coreops = core_ops.to_sections == target->to_sections; | |
1643 | ||
1644 | if (target->to_sections) | |
1645 | { | |
1646 | old = target->to_sections_end - target->to_sections; | |
1647 | target->to_sections = (struct section_table *) | |
1648 | xrealloc ((char *) target->to_sections, | |
1649 | (sizeof (struct section_table)) * (1 + old)); | |
1650 | } | |
1651 | else | |
1652 | { | |
1653 | old = 0; | |
1654 | target->to_sections = (struct section_table *) | |
1655 | xmalloc ((sizeof (struct section_table))); | |
1656 | } | |
1657 | target->to_sections_end = target->to_sections + (1 + old); | |
1658 | ||
1659 | /* Update the to_sections field in the core_ops structure | |
3bccec63 | 1660 | if needed. */ |
8e860359 CF |
1661 | if (update_coreops) |
1662 | { | |
1663 | core_ops.to_sections = target->to_sections; | |
1664 | core_ops.to_sections_end = target->to_sections_end; | |
1665 | } | |
1666 | new_target_sect_ptr = target->to_sections + old; | |
1667 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
1668 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
1669 | bfd_section_size (abfd, sect);; | |
1670 | new_target_sect_ptr->the_bfd_section = sect; | |
1671 | new_target_sect_ptr->bfd = abfd; | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | static int | |
1676 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
1677 | { | |
1678 | bfd *dll_bfd; | |
1679 | map_code_section_args map_args; | |
1680 | asection *lowest_sect; | |
1681 | char *name; | |
1682 | if (dll_name == NULL || target == NULL) | |
1683 | return 0; | |
66ed1d85 | 1684 | name = xstrdup (dll_name); |
8e860359 CF |
1685 | dll_bfd = bfd_openr (name, "pei-i386"); |
1686 | if (dll_bfd == NULL) | |
1687 | return 0; | |
1688 | ||
1689 | if (bfd_check_format (dll_bfd, bfd_object)) | |
1690 | { | |
1691 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
1692 | if (lowest_sect == NULL) | |
1693 | return 0; | |
1694 | map_args.target = target; | |
1695 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
1696 | ||
554cb486 | 1697 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
1698 | } |
1699 | ||
1700 | return 1; | |
1701 | } | |
1702 | ||
1703 | static void | |
554cb486 | 1704 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1705 | { |
1706 | struct target_ops *target = (struct target_ops *) obj; | |
1707 | ||
1708 | DWORD base_addr; | |
1709 | ||
1710 | int dll_name_size; | |
1711 | char *dll_name = NULL; | |
1712 | char *buf = NULL; | |
1713 | struct win32_pstatus *pstatus; | |
1714 | char *p; | |
1715 | ||
1716 | if (strncmp (sect->name, ".module", 7)) | |
1717 | return; | |
1718 | ||
1719 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
1720 | if (!buf) | |
1721 | { | |
1722 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1723 | goto out; | |
1724 | } | |
1725 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
1726 | goto out; | |
1727 | ||
1728 | pstatus = (struct win32_pstatus *) buf; | |
1729 | ||
1730 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
1731 | dll_name_size = pstatus->data.module_info.module_name_size; | |
1732 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
1733 | goto out; | |
1734 | ||
1735 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
1736 | if (!dll_name) | |
1737 | { | |
1738 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1739 | goto out; | |
1740 | } | |
1741 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
1742 | ||
1743 | while ((p = strchr (dll_name, '\\'))) | |
1744 | *p = '/'; | |
1745 | ||
1746 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
1747 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
1748 | ||
1749 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
1750 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
1751 | ||
1752 | out: | |
1753 | if (buf) | |
b8c9b27d | 1754 | xfree (buf); |
8e860359 | 1755 | if (dll_name) |
b8c9b27d | 1756 | xfree (dll_name); |
8e860359 CF |
1757 | return; |
1758 | } | |
1759 | ||
1760 | void | |
990f9fe3 | 1761 | child_solib_add (char *filename ATTRIBUTE_UNUSED, int from_tty, struct target_ops *target, int readsyms) |
8e860359 | 1762 | { |
990f9fe3 FF |
1763 | if (!readsyms) |
1764 | return; | |
8e860359 CF |
1765 | if (core_bfd) |
1766 | { | |
1767 | child_clear_solibs (); | |
1768 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
1769 | } | |
1770 | else | |
1771 | { | |
1772 | if (solib_end && solib_end->name) | |
d3ff4a77 | 1773 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
3bccec63 | 1774 | solib_end->load_addr); |
8e860359 CF |
1775 | } |
1776 | } | |
1777 | ||
1778 | static void | |
1779 | fetch_elf_core_registers (char *core_reg_sect, | |
1780 | unsigned core_reg_size, | |
1781 | int which, | |
1782 | CORE_ADDR reg_addr) | |
1783 | { | |
1784 | int r; | |
1785 | if (core_reg_size < sizeof (CONTEXT)) | |
1786 | { | |
1787 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
1788 | return; | |
1789 | } | |
1790 | for (r = 0; r < NUM_REGS; r++) | |
1791 | supply_register (r, core_reg_sect + mappings[r]); | |
1792 | } | |
1793 | ||
1794 | static struct core_fns win32_elf_core_fns = | |
1795 | { | |
1796 | bfd_target_elf_flavour, | |
1797 | default_check_format, | |
1798 | default_core_sniffer, | |
1799 | fetch_elf_core_registers, | |
1800 | NULL | |
1801 | }; | |
1802 | ||
1803 | void | |
0613c401 | 1804 | _initialize_core_win32 (void) |
8e860359 CF |
1805 | { |
1806 | add_core_fns (&win32_elf_core_fns); | |
1807 | } | |
2a3d5645 CF |
1808 | |
1809 | void | |
1810 | _initialize_check_for_gdb_ini (void) | |
1811 | { | |
1812 | char *homedir; | |
1813 | if (inhibit_gdbinit) | |
1814 | return; | |
1815 | ||
1816 | homedir = getenv ("HOME"); | |
1817 | if (homedir) | |
1818 | { | |
1819 | char *p; | |
1820 | char *oldini = (char *) alloca (strlen (homedir) + | |
1821 | sizeof ("/gdb.ini")); | |
1822 | strcpy (oldini, homedir); | |
1823 | p = strchr (oldini, '\0'); | |
1824 | if (p > oldini && p[-1] != '/') | |
1825 | *p++ = '/'; | |
1826 | strcpy (p, "gdb.ini"); | |
1827 | if (access (oldini, 0) == 0) | |
1828 | { | |
1829 | int len = strlen (oldini); | |
1830 | char *newini = alloca (len + 1); | |
1831 | sprintf (newini, "%.*s.gdbinit", len - (sizeof ("gdb.ini") - 1), oldini); | |
1832 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); | |
1833 | } | |
1834 | } | |
1835 | } |