Commit | Line | Data |
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24e60978 | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
e6433c28 CF |
2 | Copyright 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
3 | Contributed by Cygnus Solutions, A Red Hat Company. | |
e88c49c3 | 4 | |
24e60978 SC |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without eve nthe implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
3a4b77d8 JM |
19 | Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. | |
21 | */ | |
24e60978 SC |
22 | |
23 | /* by Steve Chamberlain, sac@cygnus.com */ | |
24 | ||
3cee93ac | 25 | /* We assume we're being built with and will be used for cygwin. */ |
e88c49c3 | 26 | |
24e60978 SC |
27 | #include "defs.h" |
28 | #include "frame.h" /* required by inferior.h */ | |
29 | #include "inferior.h" | |
30 | #include "target.h" | |
24e60978 SC |
31 | #include "gdbcore.h" |
32 | #include "command.h" | |
33 | #include <signal.h> | |
34 | #include <sys/types.h> | |
35 | #include <fcntl.h> | |
cad9cd60 | 36 | #include <stdlib.h> |
cad9cd60 | 37 | #include <windows.h> |
1e37c281 | 38 | #include <imagehlp.h> |
29fe111d | 39 | #include <sys/cygwin.h> |
cad9cd60 | 40 | |
24e60978 | 41 | #include "buildsym.h" |
1ef980b9 SC |
42 | #include "symfile.h" |
43 | #include "objfiles.h" | |
24e60978 | 44 | #include "gdb_string.h" |
fdfa3315 | 45 | #include "gdbthread.h" |
24e60978 | 46 | #include "gdbcmd.h" |
1750a5ef | 47 | #include <sys/param.h> |
1e37c281 | 48 | #include <unistd.h> |
24e60978 | 49 | |
0714f9bf | 50 | /* The ui's event loop. */ |
507f3c78 | 51 | extern int (*ui_loop_hook) (int signo); |
0714f9bf SS |
52 | |
53 | /* If we're not using the old Cygwin header file set, define the | |
54 | following which never should have been in the generic Win32 API | |
55 | headers in the first place since they were our own invention... */ | |
56 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 57 | enum |
8e860359 CF |
58 | { |
59 | FLAG_TRACE_BIT = 0x100, | |
60 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
61 | }; | |
0714f9bf | 62 | #endif |
8e860359 CF |
63 | #include <sys/procfs.h> |
64 | #include <psapi.h> | |
0714f9bf | 65 | |
3cee93ac CF |
66 | /* The string sent by cygwin when it processes a signal. |
67 | FIXME: This should be in a cygwin include file. */ | |
68 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
69 | ||
29fe111d | 70 | #define CHECK(x) check (x, __FILE__,__LINE__) |
1ef980b9 SC |
71 | #define DEBUG_EXEC(x) if (debug_exec) printf x |
72 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
73 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
74 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
24e60978 SC |
75 | |
76 | /* Forward declaration */ | |
77 | extern struct target_ops child_ops; | |
78 | ||
a14ed312 KB |
79 | static void child_stop (void); |
80 | static int win32_child_thread_alive (int); | |
81 | void child_kill_inferior (void); | |
3cee93ac | 82 | |
8a892701 CF |
83 | static int last_sig = 0; /* Set if a signal was received from the |
84 | debugged process */ | |
3cee93ac CF |
85 | /* Thread information structure used to track information that is |
86 | not available in gdb's thread structure. */ | |
87 | typedef struct thread_info_struct | |
3a4b77d8 JM |
88 | { |
89 | struct thread_info_struct *next; | |
90 | DWORD id; | |
91 | HANDLE h; | |
92 | char *name; | |
93 | int suspend_count; | |
94 | CONTEXT context; | |
1e37c281 | 95 | STACKFRAME sf; |
8e860359 CF |
96 | } |
97 | thread_info; | |
1e37c281 | 98 | |
29fe111d | 99 | static thread_info thread_head; |
24e60978 | 100 | |
24e60978 SC |
101 | /* The process and thread handles for the above context. */ |
102 | ||
3cee93ac CF |
103 | static DEBUG_EVENT current_event; /* The current debug event from |
104 | WaitForDebugEvent */ | |
105 | static HANDLE current_process_handle; /* Currently executing process */ | |
106 | static thread_info *current_thread; /* Info on currently selected thread */ | |
3a4b77d8 | 107 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
108 | |
109 | /* Counts of things. */ | |
110 | static int exception_count = 0; | |
111 | static int event_count = 0; | |
112 | ||
113 | /* User options. */ | |
114 | static int new_console = 0; | |
1e37c281 | 115 | static int new_group = 1; |
3a4b77d8 JM |
116 | static int debug_exec = 0; /* show execution */ |
117 | static int debug_events = 0; /* show events from kernel */ | |
118 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 119 | static int debug_exceptions = 0; /* show target exceptions */ |
24e60978 SC |
120 | |
121 | /* This vector maps GDB's idea of a register's number into an address | |
3cee93ac | 122 | in the win32 exception context vector. |
24e60978 | 123 | |
3cee93ac | 124 | It also contains the bit mask needed to load the register in question. |
24e60978 SC |
125 | |
126 | One day we could read a reg, we could inspect the context we | |
127 | already have loaded, if it doesn't have the bit set that we need, | |
128 | we read that set of registers in using GetThreadContext. If the | |
129 | context already contains what we need, we just unpack it. Then to | |
130 | write a register, first we have to ensure that the context contains | |
131 | the other regs of the group, and then we copy the info in and set | |
132 | out bit. */ | |
133 | ||
3cee93ac CF |
134 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) |
135 | static const int mappings[] = | |
24e60978 | 136 | { |
3a4b77d8 JM |
137 | context_offset (Eax), |
138 | context_offset (Ecx), | |
139 | context_offset (Edx), | |
140 | context_offset (Ebx), | |
141 | context_offset (Esp), | |
142 | context_offset (Ebp), | |
143 | context_offset (Esi), | |
144 | context_offset (Edi), | |
145 | context_offset (Eip), | |
146 | context_offset (EFlags), | |
147 | context_offset (SegCs), | |
148 | context_offset (SegSs), | |
149 | context_offset (SegDs), | |
150 | context_offset (SegEs), | |
151 | context_offset (SegFs), | |
152 | context_offset (SegGs), | |
153 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
154 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
155 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
156 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
157 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
158 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
159 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
160 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
1e37c281 JM |
161 | context_offset (FloatSave.ControlWord), |
162 | context_offset (FloatSave.StatusWord), | |
163 | context_offset (FloatSave.TagWord), | |
164 | context_offset (FloatSave.ErrorSelector), | |
165 | context_offset (FloatSave.ErrorOffset), | |
166 | context_offset (FloatSave.DataSelector), | |
167 | context_offset (FloatSave.DataOffset), | |
d3a09475 | 168 | context_offset (FloatSave.ErrorSelector) |
24e60978 SC |
169 | }; |
170 | ||
d3a09475 JM |
171 | #undef context_offset |
172 | ||
24e60978 SC |
173 | /* This vector maps the target's idea of an exception (extracted |
174 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
175 | ||
176 | struct xlate_exception | |
177 | { | |
178 | int them; | |
179 | enum target_signal us; | |
180 | }; | |
181 | ||
24e60978 SC |
182 | static const struct xlate_exception |
183 | xlate[] = | |
184 | { | |
185 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 186 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
187 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
188 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
189 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
190 | {-1, -1}}; | |
191 | ||
3cee93ac CF |
192 | /* Find a thread record given a thread id. |
193 | If get_context then also retrieve the context for this | |
194 | thread. */ | |
195 | static thread_info * | |
196 | thread_rec (DWORD id, int get_context) | |
24e60978 | 197 | { |
3cee93ac CF |
198 | thread_info *th; |
199 | ||
3a4b77d8 | 200 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
201 | if (th->id == id) |
202 | { | |
203 | if (!th->suspend_count && get_context) | |
204 | { | |
8a892701 | 205 | if (get_context > 0 && id != current_event.dwThreadId) |
3cee93ac CF |
206 | th->suspend_count = SuspendThread (th->h) + 1; |
207 | else if (get_context < 0) | |
208 | th->suspend_count = -1; | |
209 | ||
210 | th->context.ContextFlags = CONTEXT_DEBUGGER; | |
211 | GetThreadContext (th->h, &th->context); | |
212 | } | |
213 | return th; | |
214 | } | |
215 | ||
216 | return NULL; | |
217 | } | |
218 | ||
219 | /* Add a thread to the thread list */ | |
220 | static thread_info * | |
3a4b77d8 | 221 | child_add_thread (DWORD id, HANDLE h) |
3cee93ac CF |
222 | { |
223 | thread_info *th; | |
224 | ||
225 | if ((th = thread_rec (id, FALSE))) | |
226 | return th; | |
227 | ||
228 | th = (thread_info *) xmalloc (sizeof (*th)); | |
3a4b77d8 | 229 | memset (th, 0, sizeof (*th)); |
3cee93ac CF |
230 | th->id = id; |
231 | th->h = h; | |
232 | th->next = thread_head.next; | |
233 | thread_head.next = th; | |
234 | add_thread (id); | |
235 | return th; | |
24e60978 SC |
236 | } |
237 | ||
3cee93ac CF |
238 | /* Clear out any old thread list and reintialize it to a |
239 | pristine state. */ | |
24e60978 | 240 | static void |
fba45db2 | 241 | child_init_thread_list (void) |
24e60978 | 242 | { |
3cee93ac CF |
243 | thread_info *th = &thread_head; |
244 | ||
245 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
246 | init_thread_list (); | |
247 | while (th->next != NULL) | |
24e60978 | 248 | { |
3cee93ac CF |
249 | thread_info *here = th->next; |
250 | th->next = here->next; | |
251 | (void) CloseHandle (here->h); | |
252 | free (here); | |
24e60978 | 253 | } |
3cee93ac CF |
254 | } |
255 | ||
256 | /* Delete a thread from the list of threads */ | |
257 | static void | |
258 | child_delete_thread (DWORD id) | |
259 | { | |
260 | thread_info *th; | |
261 | ||
262 | if (info_verbose) | |
263 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (id)); | |
264 | delete_thread (id); | |
265 | ||
266 | for (th = &thread_head; | |
267 | th->next != NULL && th->next->id != id; | |
268 | th = th->next) | |
269 | continue; | |
270 | ||
271 | if (th->next != NULL) | |
24e60978 | 272 | { |
3cee93ac CF |
273 | thread_info *here = th->next; |
274 | th->next = here->next; | |
275 | CloseHandle (here->h); | |
276 | free (here); | |
24e60978 SC |
277 | } |
278 | } | |
279 | ||
280 | static void | |
3cee93ac CF |
281 | check (BOOL ok, const char *file, int line) |
282 | { | |
283 | if (!ok) | |
29fe111d | 284 | printf_filtered ("error return %s:%d was %lu\n", file, line, GetLastError ()); |
3cee93ac CF |
285 | } |
286 | ||
287 | static void | |
288 | do_child_fetch_inferior_registers (int r) | |
24e60978 | 289 | { |
1e37c281 JM |
290 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
291 | long l; | |
292 | if (r == FCS_REGNUM) | |
293 | { | |
8e860359 | 294 | l = *((long *) context_offset) & 0xffff; |
1e37c281 JM |
295 | supply_register (r, (char *) &l); |
296 | } | |
297 | else if (r == FOP_REGNUM) | |
298 | { | |
8e860359 | 299 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
1e37c281 JM |
300 | supply_register (r, (char *) &l); |
301 | } | |
302 | else if (r >= 0) | |
d3a09475 | 303 | supply_register (r, context_offset); |
3cee93ac | 304 | else |
24e60978 SC |
305 | { |
306 | for (r = 0; r < NUM_REGS; r++) | |
3cee93ac | 307 | do_child_fetch_inferior_registers (r); |
24e60978 | 308 | } |
3cee93ac CF |
309 | } |
310 | ||
311 | static void | |
312 | child_fetch_inferior_registers (int r) | |
313 | { | |
314 | current_thread = thread_rec (inferior_pid, TRUE); | |
315 | do_child_fetch_inferior_registers (r); | |
316 | } | |
317 | ||
318 | static void | |
319 | do_child_store_inferior_registers (int r) | |
320 | { | |
321 | if (r >= 0) | |
322 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
24e60978 SC |
323 | else |
324 | { | |
3cee93ac CF |
325 | for (r = 0; r < NUM_REGS; r++) |
326 | do_child_store_inferior_registers (r); | |
24e60978 SC |
327 | } |
328 | } | |
329 | ||
3cee93ac CF |
330 | /* Store a new register value into the current thread context */ |
331 | static void | |
332 | child_store_inferior_registers (int r) | |
333 | { | |
334 | current_thread = thread_rec (inferior_pid, TRUE); | |
335 | do_child_store_inferior_registers (r); | |
336 | } | |
24e60978 | 337 | |
1e37c281 JM |
338 | static int psapi_loaded = 0; |
339 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
340 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
341 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
342 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
1e37c281 | 343 | |
8e860359 CF |
344 | int |
345 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) | |
1e37c281 JM |
346 | { |
347 | DWORD len; | |
348 | MODULEINFO mi; | |
349 | int i; | |
8e860359 CF |
350 | HMODULE dh_buf[1]; |
351 | HMODULE *DllHandle = dh_buf; | |
1e37c281 JM |
352 | DWORD cbNeeded; |
353 | BOOL ok; | |
354 | ||
355 | if (!psapi_loaded || | |
8e860359 CF |
356 | psapi_EnumProcessModules == NULL || |
357 | psapi_GetModuleInformation == NULL || | |
358 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 | 359 | { |
8e860359 CF |
360 | if (psapi_loaded) |
361 | goto failed; | |
1e37c281 JM |
362 | psapi_loaded = 1; |
363 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
364 | if (!psapi_module_handle) | |
8e860359 CF |
365 | { |
366 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
367 | goto failed; | |
368 | } | |
369 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
1e37c281 JM |
370 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
371 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
372 | "GetModuleFileNameExA"); |
373 | if (psapi_EnumProcessModules == NULL || | |
374 | psapi_GetModuleInformation == NULL || | |
375 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 JM |
376 | goto failed; |
377 | } | |
378 | ||
379 | cbNeeded = 0; | |
380 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
381 | DllHandle, |
382 | sizeof (HMODULE), | |
383 | &cbNeeded); | |
1e37c281 JM |
384 | |
385 | if (!ok || !cbNeeded) | |
386 | goto failed; | |
387 | ||
8e860359 | 388 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
389 | if (!DllHandle) |
390 | goto failed; | |
391 | ||
392 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
393 | DllHandle, |
394 | cbNeeded, | |
395 | &cbNeeded); | |
1e37c281 JM |
396 | if (!ok) |
397 | goto failed; | |
398 | ||
29fe111d | 399 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 JM |
400 | { |
401 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
402 | DllHandle[i], |
403 | &mi, | |
404 | sizeof (mi))) | |
1e37c281 JM |
405 | error ("Can't get module info"); |
406 | ||
407 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
408 | DllHandle[i], |
409 | dll_name_ret, | |
410 | MAX_PATH); | |
1e37c281 | 411 | if (len == 0) |
29fe111d | 412 | error ("Error getting dll name: %u\n", GetLastError ()); |
1e37c281 JM |
413 | |
414 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
415 | return 1; | |
416 | } | |
417 | ||
418 | failed: | |
419 | dll_name_ret[0] = '\0'; | |
420 | return 0; | |
421 | } | |
422 | ||
450005e7 CF |
423 | /* Encapsulate the information required in a call to |
424 | symbol_file_add_args */ | |
8a892701 CF |
425 | struct safe_symbol_file_add_args |
426 | { | |
427 | char *name; | |
428 | int from_tty; | |
429 | struct section_addr_info *addrs; | |
430 | int mainline; | |
431 | int flags; | |
7c5c87c0 | 432 | struct ui_file *err, *out; |
8a892701 CF |
433 | struct objfile *ret; |
434 | }; | |
435 | ||
450005e7 CF |
436 | /* Call symbol_file_add with stderr redirected. We don't care if there |
437 | are errors. */ | |
8a892701 CF |
438 | static int |
439 | safe_symbol_file_add_stub (void *argv) | |
440 | { | |
441 | #define p ((struct safe_symbol_file_add_args *)argv) | |
442 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); | |
443 | return !!p->ret; | |
444 | #undef p | |
445 | } | |
446 | ||
450005e7 | 447 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 448 | static void |
7c5c87c0 | 449 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 450 | { |
8e860359 | 451 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 452 | gdb_flush (gdb_stderr); |
7c5c87c0 | 453 | gdb_flush (gdb_stdout); |
8a892701 | 454 | ui_file_delete (gdb_stderr); |
7c5c87c0 CF |
455 | ui_file_delete (gdb_stdout); |
456 | gdb_stderr = sp->err; | |
9d3789f7 | 457 | gdb_stdout = sp->out; |
8e860359 | 458 | #undef sp |
8a892701 CF |
459 | } |
460 | ||
450005e7 | 461 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
462 | static struct objfile * |
463 | safe_symbol_file_add (char *name, int from_tty, | |
464 | struct section_addr_info *addrs, | |
465 | int mainline, int flags) | |
8a892701 CF |
466 | { |
467 | struct safe_symbol_file_add_args p; | |
468 | struct cleanup *cleanup; | |
469 | ||
7c5c87c0 | 470 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 471 | |
7c5c87c0 CF |
472 | p.err = gdb_stderr; |
473 | p.out = gdb_stdout; | |
450005e7 | 474 | gdb_flush (gdb_stderr); |
7c5c87c0 | 475 | gdb_flush (gdb_stdout); |
8a892701 | 476 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 477 | gdb_stdout = ui_file_new (); |
8a892701 CF |
478 | p.name = name; |
479 | p.from_tty = from_tty; | |
480 | p.addrs = addrs; | |
481 | p.mainline = mainline; | |
482 | p.flags = flags; | |
483 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
484 | ||
485 | do_cleanups (cleanup); | |
486 | return p.ret; | |
487 | } | |
488 | ||
450005e7 CF |
489 | /* Maintain a linked list of "so" information. */ |
490 | struct so_stuff | |
491 | { | |
492 | struct so_stuff *next, **last; | |
493 | DWORD load_addr; | |
494 | char name[0]; | |
8e860359 CF |
495 | } |
496 | solib_start, *solib_end; | |
450005e7 CF |
497 | |
498 | /* Remember the maximum DLL length for printing in info dll command. */ | |
499 | int max_dll_name_len; | |
500 | ||
8e860359 CF |
501 | static void |
502 | register_loaded_dll (const char *name, DWORD load_addr) | |
503 | { | |
504 | struct so_stuff *so; | |
505 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (name) + 8 + 2); | |
506 | so->load_addr = load_addr; | |
507 | strcpy (so->name, name); | |
508 | ||
509 | solib_end->next = so; | |
510 | solib_end = so; | |
511 | so->next = NULL; | |
512 | } | |
513 | ||
24e60978 SC |
514 | /* Wait for child to do something. Return pid of child, or -1 in case |
515 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 516 | static int |
29fe111d | 517 | handle_load_dll (PTR dummy ATTRIBUTE_UNUSED) |
24e60978 | 518 | { |
3a4b77d8 | 519 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
24e60978 SC |
520 | DWORD dll_name_ptr; |
521 | DWORD done; | |
3cee93ac | 522 | char dll_buf[MAX_PATH + 1]; |
450005e7 | 523 | char *dll_name = NULL; |
450005e7 CF |
524 | int len; |
525 | char *p; | |
3cee93ac | 526 | |
3a4b77d8 | 527 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 528 | |
1e37c281 | 529 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 530 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 531 | |
1e37c281 | 532 | dll_name = dll_buf; |
24e60978 | 533 | |
3cee93ac CF |
534 | /* Attempt to read the name of the dll that was detected. |
535 | This is documented to work only when actively debugging | |
536 | a program. It will not work for attached processes. */ | |
537 | if (dll_name == NULL || *dll_name == '\0') | |
24e60978 | 538 | { |
29fe111d | 539 | DWORD size = event->fUnicode ? sizeof (WCHAR) : sizeof (char); |
24e60978 SC |
540 | int len = 0; |
541 | char b[2]; | |
3cee93ac CF |
542 | |
543 | ReadProcessMemory (current_process_handle, | |
544 | (LPCVOID) event->lpImageName, | |
545 | (char *) &dll_name_ptr, | |
546 | sizeof (dll_name_ptr), &done); | |
547 | ||
548 | /* See if we could read the address of a string, and that the | |
3a4b77d8 | 549 | address isn't null. */ |
3cee93ac CF |
550 | |
551 | if (done != sizeof (dll_name_ptr) || !dll_name_ptr) | |
552 | return 1; | |
553 | ||
24e60978 SC |
554 | do |
555 | { | |
3cee93ac CF |
556 | ReadProcessMemory (current_process_handle, |
557 | (LPCVOID) (dll_name_ptr + len * size), | |
24e60978 SC |
558 | &b, |
559 | size, | |
560 | &done); | |
561 | len++; | |
562 | } | |
563 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
564 | ||
24e60978 SC |
565 | dll_name = alloca (len); |
566 | ||
3cee93ac | 567 | if (event->fUnicode) |
24e60978 SC |
568 | { |
569 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
3cee93ac CF |
570 | ReadProcessMemory (current_process_handle, |
571 | (LPCVOID) dll_name_ptr, | |
24e60978 SC |
572 | unicode_dll_name, |
573 | len * sizeof (WCHAR), | |
574 | &done); | |
575 | ||
576 | WideCharToMultiByte (CP_ACP, 0, | |
577 | unicode_dll_name, len, | |
578 | dll_name, len, 0, 0); | |
579 | } | |
580 | else | |
581 | { | |
3cee93ac CF |
582 | ReadProcessMemory (current_process_handle, |
583 | (LPCVOID) dll_name_ptr, | |
24e60978 SC |
584 | dll_name, |
585 | len, | |
586 | &done); | |
587 | } | |
24e60978 | 588 | } |
3cee93ac CF |
589 | |
590 | if (!dll_name) | |
591 | return 1; | |
592 | ||
29fe111d CF |
593 | (void) strlwr (dll_name); |
594 | ||
3cee93ac CF |
595 | while ((p = strchr (dll_name, '\\'))) |
596 | *p = '/'; | |
597 | ||
8e860359 | 598 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
599 | len = strlen (dll_name); |
600 | if (len > max_dll_name_len) | |
601 | max_dll_name_len = len; | |
602 | ||
603 | return 1; | |
604 | } | |
605 | ||
606 | /* Return name of last loaded DLL. */ | |
607 | char * | |
9d3789f7 | 608 | child_solib_loaded_library_pathname (int pid ATTRIBUTE_UNUSED) |
450005e7 | 609 | { |
8e860359 | 610 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
611 | } |
612 | ||
613 | /* Clear list of loaded DLLs. */ | |
614 | void | |
615 | child_clear_solibs (void) | |
616 | { | |
617 | struct so_stuff *so, *so1 = solib_start.next; | |
618 | ||
619 | while ((so = so1) != NULL) | |
620 | { | |
621 | so1 = so->next; | |
622 | free (so); | |
623 | } | |
624 | ||
625 | solib_start.next = NULL; | |
626 | solib_end = &solib_start; | |
627 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
628 | } | |
629 | ||
630 | /* Add DLL symbol information. */ | |
631 | void | |
8e860359 | 632 | solib_symbols_add (char *name, CORE_ADDR load_addr) |
450005e7 CF |
633 | { |
634 | struct section_addr_info section_addrs; | |
635 | ||
3cee93ac CF |
636 | /* The symbols in a dll are offset by 0x1000, which is the |
637 | the offset from 0 of the first byte in an image - because | |
8a892701 | 638 | of the file header and the section alignment. */ |
3cee93ac | 639 | |
8e860359 | 640 | if (!name || !name[0]) |
450005e7 CF |
641 | return; |
642 | ||
643 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 644 | section_addrs.other[0].name = ".text"; |
8e860359 CF |
645 | section_addrs.other[0].addr = load_addr; |
646 | safe_symbol_file_add (name, 0, §ion_addrs, 0, OBJF_SHARED); | |
3cee93ac | 647 | |
450005e7 CF |
648 | return; |
649 | } | |
650 | ||
651 | /* Load DLL symbol info. */ | |
652 | void | |
9d3789f7 | 653 | dll_symbol_command (char *args, int from_tty ATTRIBUTE_UNUSED) |
450005e7 | 654 | { |
8e860359 | 655 | int n; |
450005e7 | 656 | dont_repeat (); |
8e860359 | 657 | |
450005e7 CF |
658 | if (args == NULL) |
659 | error ("dll-symbols requires a file name"); | |
660 | ||
8e860359 CF |
661 | n = strlen (args); |
662 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
663 | { | |
664 | char *newargs = (char *) alloca (n + 4 + 1); | |
665 | strcpy (newargs, args); | |
666 | strcat (newargs, ".dll"); | |
667 | args = newargs; | |
668 | } | |
669 | ||
9d3789f7 | 670 | safe_symbol_file_add (args, 0, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 671 | } |
450005e7 CF |
672 | |
673 | /* List currently loaded DLLs. */ | |
674 | void | |
9d3789f7 | 675 | info_dll_command (char *ignore ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
450005e7 CF |
676 | { |
677 | struct so_stuff *so = &solib_start; | |
678 | ||
679 | if (!so->next) | |
680 | return; | |
681 | ||
682 | printf ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); | |
683 | while ((so = so->next) != NULL) | |
7c5c87c0 | 684 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
685 | |
686 | return; | |
24e60978 SC |
687 | } |
688 | ||
3cee93ac CF |
689 | /* Handle DEBUG_STRING output from child process. |
690 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
691 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
692 | static int | |
693 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
694 | { | |
695 | char *s; | |
696 | int gotasig = FALSE; | |
697 | ||
698 | if (!target_read_string | |
3a4b77d8 | 699 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
3cee93ac CF |
700 | || !s || !*s) |
701 | return gotasig; | |
702 | ||
d3a09475 | 703 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
3cee93ac | 704 | { |
d3a09475 | 705 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 706 | warning ("%s", s); |
3cee93ac | 707 | } |
d3a09475 | 708 | else |
3cee93ac CF |
709 | { |
710 | char *p; | |
1e37c281 JM |
711 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
712 | gotasig = target_signal_from_host (sig); | |
0714f9bf SS |
713 | ourstatus->value.sig = gotasig; |
714 | if (gotasig) | |
3cee93ac CF |
715 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
716 | } | |
717 | ||
718 | free (s); | |
719 | return gotasig; | |
720 | } | |
24e60978 | 721 | |
36339ecd | 722 | static int |
450005e7 | 723 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 724 | { |
3cee93ac | 725 | thread_info *th; |
29fe111d | 726 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 727 | |
29fe111d | 728 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 729 | |
3cee93ac CF |
730 | /* Record the context of the current thread */ |
731 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 732 | |
29fe111d | 733 | switch (code) |
24e60978 | 734 | { |
1ef980b9 | 735 | case EXCEPTION_ACCESS_VIOLATION: |
29fe111d | 736 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n", |
8e860359 | 737 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 | 738 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
8a892701 | 739 | last_sig = SIGSEGV; |
1ef980b9 | 740 | break; |
3b7c8b74 JM |
741 | case STATUS_FLOAT_UNDERFLOW: |
742 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
743 | case STATUS_FLOAT_OVERFLOW: | |
744 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
29fe111d | 745 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 746 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
3b7c8b74 | 747 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
29fe111d | 748 | last_sig = SIGFPE; |
3b7c8b74 | 749 | break; |
1ef980b9 | 750 | case STATUS_STACK_OVERFLOW: |
29fe111d | 751 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 752 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 SC |
753 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
754 | break; | |
755 | case EXCEPTION_BREAKPOINT: | |
29fe111d | 756 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n", |
8e860359 | 757 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 SC |
758 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
759 | break; | |
760 | case DBG_CONTROL_C: | |
29fe111d | 761 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n", |
8e860359 | 762 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 | 763 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
8a892701 | 764 | last_sig = SIGINT; /* FIXME - should check pass state */ |
1ef980b9 SC |
765 | break; |
766 | case EXCEPTION_SINGLE_STEP: | |
29fe111d | 767 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n", |
8e860359 | 768 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
1ef980b9 SC |
769 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
770 | break; | |
8227c82d | 771 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
29fe111d | 772 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n", |
8e860359 | 773 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
8227c82d | 774 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
8a892701 | 775 | last_sig = SIGILL; |
8227c82d | 776 | break; |
1ef980b9 | 777 | default: |
29fe111d | 778 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
3a4b77d8 | 779 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 780 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
24e60978 | 781 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 782 | break; |
24e60978 | 783 | } |
24e60978 | 784 | exception_count++; |
36339ecd | 785 | return 1; |
24e60978 SC |
786 | } |
787 | ||
3cee93ac CF |
788 | /* Resume all artificially suspended threads if we are continuing |
789 | execution */ | |
790 | static BOOL | |
8a892701 | 791 | child_continue (DWORD continue_status, int id) |
3cee93ac CF |
792 | { |
793 | int i; | |
794 | thread_info *th; | |
795 | BOOL res; | |
796 | ||
29fe111d | 797 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n", |
3cee93ac | 798 | current_event.dwProcessId, current_event.dwThreadId)); |
0714f9bf SS |
799 | res = ContinueDebugEvent (current_event.dwProcessId, |
800 | current_event.dwThreadId, | |
801 | continue_status); | |
1e37c281 | 802 | continue_status = 0; |
0714f9bf | 803 | if (res) |
3a4b77d8 | 804 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 805 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
3cee93ac CF |
806 | { |
807 | for (i = 0; i < th->suspend_count; i++) | |
808 | (void) ResumeThread (th->h); | |
809 | th->suspend_count = 0; | |
810 | } | |
811 | ||
812 | return res; | |
813 | } | |
814 | ||
8a892701 CF |
815 | /* Get the next event from the child. Return 1 if the event requires |
816 | handling by WFI (or whatever). | |
817 | */ | |
1e37c281 | 818 | static int |
450005e7 | 819 | get_child_debug_event (int pid ATTRIBUTE_UNUSED, struct target_waitstatus *ourstatus) |
1e37c281 JM |
820 | { |
821 | BOOL debug_event; | |
8a892701 CF |
822 | DWORD continue_status, event_code; |
823 | thread_info *th = NULL; | |
824 | static thread_info dummy_thread_info; | |
450005e7 | 825 | int retval = 0; |
1e37c281 | 826 | |
9d3789f7 CF |
827 | last_sig = 0; |
828 | ||
8a892701 | 829 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 830 | goto out; |
1e37c281 JM |
831 | |
832 | event_count++; | |
833 | continue_status = DBG_CONTINUE; | |
1e37c281 | 834 | |
8a892701 | 835 | event_code = current_event.dwDebugEventCode; |
450005e7 | 836 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
837 | |
838 | switch (event_code) | |
1e37c281 JM |
839 | { |
840 | case CREATE_THREAD_DEBUG_EVENT: | |
841 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
842 | (unsigned) current_event.dwProcessId, |
843 | (unsigned) current_event.dwThreadId, | |
844 | "CREATE_THREAD_DEBUG_EVENT")); | |
1e37c281 | 845 | /* Record the existence of this thread */ |
8a892701 CF |
846 | th = child_add_thread (current_event.dwThreadId, |
847 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
848 | if (info_verbose) |
849 | printf_unfiltered ("[New %s]\n", | |
8a892701 | 850 | target_pid_to_str (current_event.dwThreadId)); |
450005e7 | 851 | retval = current_event.dwThreadId; |
1e37c281 JM |
852 | break; |
853 | ||
854 | case EXIT_THREAD_DEBUG_EVENT: | |
855 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
856 | (unsigned) current_event.dwProcessId, |
857 | (unsigned) current_event.dwThreadId, | |
858 | "EXIT_THREAD_DEBUG_EVENT")); | |
1e37c281 | 859 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 860 | th = &dummy_thread_info; |
1e37c281 JM |
861 | break; |
862 | ||
863 | case CREATE_PROCESS_DEBUG_EVENT: | |
864 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
865 | (unsigned) current_event.dwProcessId, |
866 | (unsigned) current_event.dwThreadId, | |
867 | "CREATE_PROCESS_DEBUG_EVENT")); | |
1e37c281 JM |
868 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
869 | ||
9d3789f7 | 870 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 871 | /* Add the main thread */ |
9d3789f7 | 872 | #if 0 |
450005e7 CF |
873 | th = child_add_thread (current_event.dwProcessId, |
874 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
875 | #endif |
876 | th = child_add_thread (main_thread_id, | |
8a892701 | 877 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 878 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
1e37c281 JM |
879 | break; |
880 | ||
881 | case EXIT_PROCESS_DEBUG_EVENT: | |
882 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
883 | (unsigned) current_event.dwProcessId, |
884 | (unsigned) current_event.dwThreadId, | |
885 | "EXIT_PROCESS_DEBUG_EVENT")); | |
1e37c281 JM |
886 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
887 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
888 | CloseHandle (current_process_handle); | |
9d3789f7 | 889 | retval = main_thread_id; |
8a892701 | 890 | break; |
1e37c281 JM |
891 | |
892 | case LOAD_DLL_DEBUG_EVENT: | |
893 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
894 | (unsigned) current_event.dwProcessId, |
895 | (unsigned) current_event.dwThreadId, | |
896 | "LOAD_DLL_DEBUG_EVENT")); | |
897 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); | |
1e37c281 | 898 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
899 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
900 | ourstatus->value.integer = 0; | |
9d3789f7 | 901 | retval = main_thread_id; |
1e37c281 JM |
902 | break; |
903 | ||
904 | case UNLOAD_DLL_DEBUG_EVENT: | |
905 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
906 | (unsigned) current_event.dwProcessId, |
907 | (unsigned) current_event.dwThreadId, | |
908 | "UNLOAD_DLL_DEBUG_EVENT")); | |
909 | break; /* FIXME: don't know what to do here */ | |
1e37c281 JM |
910 | |
911 | case EXCEPTION_DEBUG_EVENT: | |
912 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
913 | (unsigned) current_event.dwProcessId, |
914 | (unsigned) current_event.dwThreadId, | |
915 | "EXCEPTION_DEBUG_EVENT")); | |
450005e7 CF |
916 | handle_exception (ourstatus); |
917 | retval = current_event.dwThreadId; | |
1e37c281 JM |
918 | break; |
919 | ||
8a892701 | 920 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1e37c281 | 921 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
922 | (unsigned) current_event.dwProcessId, |
923 | (unsigned) current_event.dwThreadId, | |
924 | "OUTPUT_DEBUG_STRING_EVENT")); | |
8e860359 | 925 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 926 | retval = main_thread_id; |
1e37c281 | 927 | break; |
9d3789f7 | 928 | |
1e37c281 | 929 | default: |
29fe111d CF |
930 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
931 | (DWORD) current_event.dwProcessId, | |
932 | (DWORD) current_event.dwThreadId); | |
933 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
934 | current_event.dwDebugEventCode); |
935 | break; | |
936 | } | |
937 | ||
450005e7 | 938 | if (!retval) |
8a892701 | 939 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 940 | else |
9d3789f7 | 941 | { |
8e860359 | 942 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
9d3789f7 CF |
943 | inferior_pid = retval; |
944 | } | |
1e37c281 JM |
945 | |
946 | out: | |
450005e7 | 947 | return retval; |
1e37c281 JM |
948 | } |
949 | ||
1e37c281 | 950 | /* Wait for interesting events to occur in the target process. */ |
24e60978 SC |
951 | static int |
952 | child_wait (int pid, struct target_waitstatus *ourstatus) | |
953 | { | |
954 | /* We loop when we get a non-standard exception rather than return | |
955 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 956 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
957 | the birth or death of threads, which mean that the current thread |
958 | isn't necessarily what you think it is. */ | |
959 | ||
960 | while (1) | |
450005e7 CF |
961 | { |
962 | int retval = get_child_debug_event (pid, ourstatus); | |
963 | if (retval) | |
964 | return retval; | |
965 | else | |
966 | { | |
967 | int detach = 0; | |
3cee93ac | 968 | |
450005e7 CF |
969 | if (ui_loop_hook != NULL) |
970 | detach = ui_loop_hook (0); | |
0714f9bf | 971 | |
450005e7 CF |
972 | if (detach) |
973 | child_kill_inferior (); | |
974 | } | |
975 | } | |
24e60978 SC |
976 | } |
977 | ||
9d3789f7 CF |
978 | static void |
979 | do_initial_child_stuff (DWORD pid) | |
980 | { | |
981 | extern int stop_after_trap; | |
982 | ||
983 | last_sig = 0; | |
984 | event_count = 0; | |
985 | exception_count = 0; | |
986 | current_event.dwProcessId = pid; | |
987 | memset (¤t_event, 0, sizeof (current_event)); | |
988 | push_target (&child_ops); | |
989 | child_init_thread_list (); | |
990 | child_clear_solibs (); | |
991 | clear_proceed_status (); | |
992 | init_wait_for_inferior (); | |
993 | ||
994 | target_terminal_init (); | |
995 | target_terminal_inferior (); | |
996 | ||
997 | while (1) | |
998 | { | |
999 | stop_after_trap = 1; | |
1000 | wait_for_inferior (); | |
1001 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1002 | resume (0, stop_signal); | |
1003 | else | |
1004 | break; | |
1005 | } | |
1006 | stop_after_trap = 0; | |
1007 | return; | |
1008 | } | |
1009 | ||
24e60978 SC |
1010 | /* Attach to process PID, then initialize for debugging it. */ |
1011 | ||
1012 | static void | |
fba45db2 | 1013 | child_attach (char *args, int from_tty) |
24e60978 SC |
1014 | { |
1015 | BOOL ok; | |
9d3789f7 | 1016 | DWORD pid = strtoul (args, 0, 0); |
24e60978 SC |
1017 | |
1018 | if (!args) | |
1019 | error_no_arg ("process-id to attach"); | |
1020 | ||
9d3789f7 | 1021 | ok = DebugActiveProcess (pid); |
24e60978 SC |
1022 | |
1023 | if (!ok) | |
1024 | error ("Can't attach to process."); | |
1025 | ||
24e60978 SC |
1026 | if (from_tty) |
1027 | { | |
1028 | char *exec_file = (char *) get_exec_file (0); | |
1029 | ||
1030 | if (exec_file) | |
1031 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
9d3789f7 | 1032 | target_pid_to_str (pid)); |
24e60978 SC |
1033 | else |
1034 | printf_unfiltered ("Attaching to %s\n", | |
9d3789f7 | 1035 | target_pid_to_str (pid)); |
24e60978 SC |
1036 | |
1037 | gdb_flush (gdb_stdout); | |
1038 | } | |
1039 | ||
9d3789f7 CF |
1040 | do_initial_child_stuff (pid); |
1041 | target_terminal_ours (); | |
24e60978 SC |
1042 | } |
1043 | ||
24e60978 | 1044 | static void |
29fe111d | 1045 | child_detach (char *args ATTRIBUTE_UNUSED, int from_tty) |
24e60978 SC |
1046 | { |
1047 | if (from_tty) | |
1048 | { | |
1049 | char *exec_file = get_exec_file (0); | |
1050 | if (exec_file == 0) | |
1051 | exec_file = ""; | |
1052 | printf_unfiltered ("Detaching from program: %s %s\n", exec_file, | |
1053 | target_pid_to_str (inferior_pid)); | |
1054 | gdb_flush (gdb_stdout); | |
1055 | } | |
1056 | inferior_pid = 0; | |
1057 | unpush_target (&child_ops); | |
1058 | } | |
1059 | ||
24e60978 SC |
1060 | /* Print status information about what we're accessing. */ |
1061 | ||
1062 | static void | |
29fe111d | 1063 | child_files_info (struct target_ops *ignore ATTRIBUTE_UNUSED) |
24e60978 SC |
1064 | { |
1065 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
1066 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid)); | |
1067 | } | |
1068 | ||
1069 | /* ARGSUSED */ | |
1070 | static void | |
29fe111d | 1071 | child_open (char *arg ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED) |
24e60978 SC |
1072 | { |
1073 | error ("Use the \"run\" command to start a Unix child process."); | |
1074 | } | |
1075 | ||
eb708f2e | 1076 | /* Start an inferior win32 child process and sets inferior_pid to its pid. |
24e60978 SC |
1077 | EXEC_FILE is the file to run. |
1078 | ALLARGS is a string containing the arguments to the program. | |
1079 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1080 | ||
24e60978 | 1081 | static void |
fba45db2 | 1082 | child_create_inferior (char *exec_file, char *allargs, char **env) |
24e60978 | 1083 | { |
1750a5ef SC |
1084 | char real_path[MAXPATHLEN]; |
1085 | char *winenv; | |
1086 | char *temp; | |
3a4b77d8 | 1087 | int envlen; |
1750a5ef | 1088 | int i; |
24e60978 SC |
1089 | STARTUPINFO si; |
1090 | PROCESS_INFORMATION pi; | |
24e60978 SC |
1091 | BOOL ret; |
1092 | DWORD flags; | |
eb708f2e | 1093 | char *args; |
24e60978 SC |
1094 | |
1095 | if (!exec_file) | |
450005e7 | 1096 | error ("No executable specified, use `target exec'.\n"); |
24e60978 SC |
1097 | |
1098 | memset (&si, 0, sizeof (si)); | |
1099 | si.cb = sizeof (si); | |
1100 | ||
29fe111d | 1101 | cygwin_conv_to_win32_path (exec_file, real_path); |
24e60978 | 1102 | |
3cee93ac | 1103 | flags = DEBUG_ONLY_THIS_PROCESS; |
24e60978 SC |
1104 | |
1105 | if (new_group) | |
1106 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1107 | ||
1108 | if (new_console) | |
1109 | flags |= CREATE_NEW_CONSOLE; | |
1110 | ||
3d78f532 SC |
1111 | args = alloca (strlen (real_path) + strlen (allargs) + 2); |
1112 | ||
1113 | strcpy (args, real_path); | |
eb708f2e | 1114 | |
eb708f2e SC |
1115 | strcat (args, " "); |
1116 | strcat (args, allargs); | |
1117 | ||
e88c49c3 DE |
1118 | /* Prepare the environment vars for CreateProcess. */ |
1119 | { | |
1120 | /* This code use to assume all env vars were file names and would | |
1121 | translate them all to win32 style. That obviously doesn't work in the | |
2dcfc9c7 DE |
1122 | general case. The current rule is that we only translate PATH. |
1123 | We need to handle PATH because we're about to call CreateProcess and | |
1124 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1125 | in both posix and win32 environments. cygwin.dll will change it back | |
1126 | to posix style if necessary. */ | |
e88c49c3 DE |
1127 | |
1128 | static const char *conv_path_names[] = | |
3a4b77d8 JM |
1129 | { |
1130 | "PATH=", | |
1131 | 0 | |
1132 | }; | |
e88c49c3 DE |
1133 | |
1134 | /* CreateProcess takes the environment list as a null terminated set of | |
1135 | strings (i.e. two nulls terminate the list). */ | |
1136 | ||
1137 | /* Get total size for env strings. */ | |
1138 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1139 | { | |
2dcfc9c7 | 1140 | int j, len; |
e88c49c3 | 1141 | |
2dcfc9c7 DE |
1142 | for (j = 0; conv_path_names[j]; j++) |
1143 | { | |
1144 | len = strlen (conv_path_names[j]); | |
1145 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1146 | { |
29fe111d | 1147 | if (cygwin_posix_path_list_p (env[i] + len)) |
2dcfc9c7 | 1148 | envlen += len |
29fe111d | 1149 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
2dcfc9c7 DE |
1150 | else |
1151 | envlen += strlen (env[i]) + 1; | |
1152 | break; | |
e88c49c3 | 1153 | } |
e88c49c3 | 1154 | } |
2dcfc9c7 | 1155 | if (conv_path_names[j] == NULL) |
e88c49c3 DE |
1156 | envlen += strlen (env[i]) + 1; |
1157 | } | |
1158 | ||
1159 | winenv = alloca (envlen + 1); | |
1160 | ||
1161 | /* Copy env strings into new buffer. */ | |
3cee93ac | 1162 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) |
e88c49c3 | 1163 | { |
2dcfc9c7 | 1164 | int j, len; |
e88c49c3 | 1165 | |
2dcfc9c7 DE |
1166 | for (j = 0; conv_path_names[j]; j++) |
1167 | { | |
1168 | len = strlen (conv_path_names[j]); | |
1169 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1170 | { |
29fe111d | 1171 | if (cygwin_posix_path_list_p (env[i] + len)) |
e88c49c3 DE |
1172 | { |
1173 | memcpy (temp, env[i], len); | |
29fe111d | 1174 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
e88c49c3 | 1175 | } |
2dcfc9c7 DE |
1176 | else |
1177 | strcpy (temp, env[i]); | |
1178 | break; | |
e88c49c3 | 1179 | } |
e88c49c3 | 1180 | } |
2dcfc9c7 | 1181 | if (conv_path_names[j] == NULL) |
e88c49c3 | 1182 | strcpy (temp, env[i]); |
2dcfc9c7 | 1183 | |
e88c49c3 DE |
1184 | temp += strlen (temp) + 1; |
1185 | } | |
1186 | ||
1187 | /* Final nil string to terminate new env. */ | |
1188 | *temp = 0; | |
1189 | } | |
1750a5ef | 1190 | |
1750a5ef | 1191 | ret = CreateProcess (0, |
3a4b77d8 | 1192 | args, /* command line */ |
24e60978 SC |
1193 | NULL, /* Security */ |
1194 | NULL, /* thread */ | |
1195 | TRUE, /* inherit handles */ | |
1196 | flags, /* start flags */ | |
1750a5ef | 1197 | winenv, |
24e60978 SC |
1198 | NULL, /* current directory */ |
1199 | &si, | |
1200 | &pi); | |
1201 | if (!ret) | |
3a4b77d8 | 1202 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
24e60978 | 1203 | |
9d3789f7 | 1204 | do_initial_child_stuff (pi.dwProcessId); |
d3a09475 | 1205 | |
8e860359 | 1206 | /* child_continue (DBG_CONTINUE, -1); */ |
1e37c281 | 1207 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
24e60978 SC |
1208 | } |
1209 | ||
1210 | static void | |
fba45db2 | 1211 | child_mourn_inferior (void) |
24e60978 | 1212 | { |
8a892701 | 1213 | (void) child_continue (DBG_CONTINUE, -1); |
24e60978 SC |
1214 | unpush_target (&child_ops); |
1215 | generic_mourn_inferior (); | |
1216 | } | |
1217 | ||
24e60978 SC |
1218 | /* Send a SIGINT to the process group. This acts just like the user typed a |
1219 | ^C on the controlling terminal. */ | |
1220 | ||
b607efe7 | 1221 | static void |
fba45db2 | 1222 | child_stop (void) |
24e60978 | 1223 | { |
1ef980b9 | 1224 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 1225 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 1226 | registers_changed (); /* refresh register state */ |
24e60978 SC |
1227 | } |
1228 | ||
1229 | int | |
eb708f2e | 1230 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, |
29fe111d | 1231 | int write, struct target_ops *target ATTRIBUTE_UNUSED) |
24e60978 SC |
1232 | { |
1233 | DWORD done; | |
1234 | if (write) | |
1235 | { | |
29fe111d CF |
1236 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1237 | len, (DWORD) memaddr)); | |
3cee93ac CF |
1238 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1239 | len, &done); | |
1240 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
24e60978 SC |
1241 | } |
1242 | else | |
1243 | { | |
29fe111d CF |
1244 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1245 | len, (DWORD) memaddr)); | |
3cee93ac CF |
1246 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1247 | &done); | |
24e60978 SC |
1248 | } |
1249 | return done; | |
1250 | } | |
1251 | ||
1252 | void | |
1253 | child_kill_inferior (void) | |
1254 | { | |
3cee93ac CF |
1255 | CHECK (TerminateProcess (current_process_handle, 0)); |
1256 | ||
b5edcb45 ILT |
1257 | for (;;) |
1258 | { | |
8a892701 | 1259 | if (!child_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 1260 | break; |
3cee93ac | 1261 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 1262 | break; |
3cee93ac | 1263 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
1264 | break; |
1265 | } | |
1266 | ||
3cee93ac CF |
1267 | CHECK (CloseHandle (current_process_handle)); |
1268 | ||
1269 | /* this may fail in an attached process so don't check. */ | |
1270 | (void) CloseHandle (current_thread->h); | |
3a4b77d8 | 1271 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
24e60978 SC |
1272 | } |
1273 | ||
1274 | void | |
3cee93ac | 1275 | child_resume (int pid, int step, enum target_signal sig) |
24e60978 | 1276 | { |
3cee93ac | 1277 | thread_info *th; |
8a892701 | 1278 | DWORD continue_status = last_sig > 0 && last_sig < NSIG ? |
8e860359 | 1279 | DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE; |
8a892701 CF |
1280 | |
1281 | last_sig = 0; | |
24e60978 | 1282 | |
3cee93ac CF |
1283 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", |
1284 | pid, step, sig)); | |
1285 | ||
1286 | /* Get context for currently selected thread */ | |
1287 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1288 | if (th) |
24e60978 | 1289 | { |
450005e7 CF |
1290 | if (step) |
1291 | { | |
1292 | /* Single step by setting t bit */ | |
1293 | child_fetch_inferior_registers (PS_REGNUM); | |
1294 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1295 | } | |
24e60978 | 1296 | |
450005e7 CF |
1297 | if (th->context.ContextFlags) |
1298 | { | |
1299 | CHECK (SetThreadContext (th->h, &th->context)); | |
1300 | th->context.ContextFlags = 0; | |
1301 | } | |
24e60978 SC |
1302 | } |
1303 | ||
3cee93ac CF |
1304 | /* Allow continuing with the same signal that interrupted us. |
1305 | Otherwise complain. */ | |
24e60978 | 1306 | |
8a892701 | 1307 | child_continue (continue_status, pid); |
24e60978 SC |
1308 | } |
1309 | ||
1310 | static void | |
fba45db2 | 1311 | child_prepare_to_store (void) |
24e60978 SC |
1312 | { |
1313 | /* Do nothing, since we can store individual regs */ | |
1314 | } | |
1315 | ||
1316 | static int | |
fba45db2 | 1317 | child_can_run (void) |
24e60978 SC |
1318 | { |
1319 | return 1; | |
1320 | } | |
1321 | ||
1322 | static void | |
9d3789f7 | 1323 | child_close (int x ATTRIBUTE_UNUSED) |
24e60978 | 1324 | { |
1ef980b9 | 1325 | DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid)); |
24e60978 | 1326 | } |
1ef980b9 | 1327 | |
3a4b77d8 | 1328 | struct target_ops child_ops; |
c719b714 | 1329 | |
3a4b77d8 JM |
1330 | static void |
1331 | init_child_ops (void) | |
24e60978 | 1332 | { |
3a4b77d8 JM |
1333 | child_ops.to_shortname = "child"; |
1334 | child_ops.to_longname = "Win32 child process"; | |
1335 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1336 | child_ops.to_open = child_open; | |
1337 | child_ops.to_close = child_close; | |
1338 | child_ops.to_attach = child_attach; | |
1339 | child_ops.to_detach = child_detach; | |
1340 | child_ops.to_resume = child_resume; | |
1341 | child_ops.to_wait = child_wait; | |
1342 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1343 | child_ops.to_store_registers = child_store_inferior_registers; | |
1344 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1345 | child_ops.to_xfer_memory = child_xfer_memory; | |
1346 | child_ops.to_files_info = child_files_info; | |
1347 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1348 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1349 | child_ops.to_terminal_init = terminal_init_inferior; | |
1350 | child_ops.to_terminal_inferior = terminal_inferior; | |
1351 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1352 | child_ops.to_terminal_ours = terminal_ours; | |
1353 | child_ops.to_terminal_info = child_terminal_info; | |
1354 | child_ops.to_kill = child_kill_inferior; | |
1355 | child_ops.to_load = 0; | |
1356 | child_ops.to_lookup_symbol = 0; | |
1357 | child_ops.to_create_inferior = child_create_inferior; | |
1358 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1359 | child_ops.to_can_run = child_can_run; | |
1360 | child_ops.to_notice_signals = 0; | |
1361 | child_ops.to_thread_alive = win32_child_thread_alive; | |
d3a09475 | 1362 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
3a4b77d8 JM |
1363 | child_ops.to_stop = child_stop; |
1364 | child_ops.to_stratum = process_stratum; | |
1365 | child_ops.DONT_USE = 0; | |
1366 | child_ops.to_has_all_memory = 1; | |
1367 | child_ops.to_has_memory = 1; | |
1368 | child_ops.to_has_stack = 1; | |
1369 | child_ops.to_has_registers = 1; | |
1370 | child_ops.to_has_execution = 1; | |
1371 | child_ops.to_sections = 0; | |
1372 | child_ops.to_sections_end = 0; | |
1373 | child_ops.to_magic = OPS_MAGIC; | |
c719b714 | 1374 | } |
24e60978 SC |
1375 | |
1376 | void | |
fba45db2 | 1377 | _initialize_inftarg (void) |
24e60978 | 1378 | { |
3a4b77d8 | 1379 | init_child_ops (); |
1ef980b9 | 1380 | |
450005e7 | 1381 | add_com ("dll-symbols", class_files, dll_symbol_command, |
8e860359 | 1382 | "Load dll library symbols from FILE."); |
450005e7 | 1383 | |
8e860359 | 1384 | auto_solib_add = 1; |
450005e7 CF |
1385 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); |
1386 | ||
1387 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, | |
8e860359 CF |
1388 | (char *) &new_console, |
1389 | "Set creation of new console when creating child process.", | |
1390 | &setlist), | |
1391 | &showlist); | |
24e60978 | 1392 | |
450005e7 | 1393 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1394 | (char *) &new_group, |
1395 | "Set creation of new group when creating child process.", | |
1396 | &setlist), | |
1397 | &showlist); | |
24e60978 | 1398 | |
450005e7 | 1399 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1400 | (char *) &debug_exec, |
1401 | "Set whether to display execution in child process.", | |
1402 | &setlist), | |
1403 | &showlist); | |
1ef980b9 | 1404 | |
450005e7 | 1405 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1406 | (char *) &debug_events, |
1407 | "Set whether to display kernel events in child process.", | |
1408 | &setlist), | |
1409 | &showlist); | |
1ef980b9 | 1410 | |
450005e7 | 1411 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1412 | (char *) &debug_memory, |
1413 | "Set whether to display memory accesses in child process.", | |
1414 | &setlist), | |
1415 | &showlist); | |
1ef980b9 | 1416 | |
450005e7 | 1417 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1418 | (char *) &debug_exceptions, |
1419 | "Set whether to display kernel exceptions in child process.", | |
1420 | &setlist), | |
1421 | &showlist); | |
1ef980b9 | 1422 | |
450005e7 CF |
1423 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1424 | add_info_alias ("sharedlibrary", "dll", 1); | |
1425 | ||
24e60978 SC |
1426 | add_target (&child_ops); |
1427 | } | |
3cee93ac CF |
1428 | |
1429 | /* Determine if the thread referenced by "pid" is alive | |
1430 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1431 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1432 | static int | |
bc8bd256 | 1433 | win32_child_thread_alive (int pid) |
3cee93ac | 1434 | { |
3a4b77d8 JM |
1435 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1436 | FALSE : TRUE; | |
3cee93ac CF |
1437 | } |
1438 | ||
1439 | /* Convert pid to printable format. */ | |
1440 | char * | |
1441 | cygwin_pid_to_str (int pid) | |
1442 | { | |
1443 | static char buf[80]; | |
29fe111d | 1444 | if ((DWORD) pid == current_event.dwProcessId) |
3cee93ac CF |
1445 | sprintf (buf, "process %d", pid); |
1446 | else | |
29fe111d | 1447 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
3cee93ac CF |
1448 | return buf; |
1449 | } | |
8e860359 CF |
1450 | |
1451 | static int | |
1452 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1453 | { | |
1454 | struct objfile *objfile; | |
1455 | char *objfile_basename; | |
1456 | const char *dll_basename; | |
1457 | ||
1458 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1459 | dll_basename = dll_name; | |
1460 | else | |
1461 | dll_basename++; | |
1462 | ||
1463 | ALL_OBJFILES (objfile) | |
1464 | { | |
1465 | objfile_basename = strrchr (objfile->name, '/'); | |
1466 | ||
1467 | if (objfile_basename && | |
1468 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1469 | { | |
1470 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1471 | base_addr, dll_name); | |
1472 | goto out; | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
1477 | solib_symbols_add (dll_name, (CORE_ADDR) base_addr + 0x1000); | |
1478 | ||
1479 | out: | |
1480 | return 1; | |
1481 | } | |
1482 | ||
1483 | typedef struct | |
1484 | { | |
1485 | struct target_ops *target; | |
1486 | bfd_vma addr; | |
1487 | } | |
1488 | map_code_section_args; | |
1489 | ||
1490 | static void | |
1491 | map_single_dll_code_section (bfd * abfd, asection * sect, PTR obj) | |
1492 | { | |
1493 | int old; | |
1494 | int update_coreops; | |
1495 | struct section_table *new_target_sect_ptr; | |
1496 | ||
1497 | map_code_section_args *args = (map_code_section_args *) obj; | |
1498 | struct target_ops *target = args->target; | |
1499 | if (sect->flags & SEC_CODE) | |
1500 | { | |
1501 | update_coreops = core_ops.to_sections == target->to_sections; | |
1502 | ||
1503 | if (target->to_sections) | |
1504 | { | |
1505 | old = target->to_sections_end - target->to_sections; | |
1506 | target->to_sections = (struct section_table *) | |
1507 | xrealloc ((char *) target->to_sections, | |
1508 | (sizeof (struct section_table)) * (1 + old)); | |
1509 | } | |
1510 | else | |
1511 | { | |
1512 | old = 0; | |
1513 | target->to_sections = (struct section_table *) | |
1514 | xmalloc ((sizeof (struct section_table))); | |
1515 | } | |
1516 | target->to_sections_end = target->to_sections + (1 + old); | |
1517 | ||
1518 | /* Update the to_sections field in the core_ops structure | |
1519 | if needed. */ | |
1520 | if (update_coreops) | |
1521 | { | |
1522 | core_ops.to_sections = target->to_sections; | |
1523 | core_ops.to_sections_end = target->to_sections_end; | |
1524 | } | |
1525 | new_target_sect_ptr = target->to_sections + old; | |
1526 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
1527 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
1528 | bfd_section_size (abfd, sect);; | |
1529 | new_target_sect_ptr->the_bfd_section = sect; | |
1530 | new_target_sect_ptr->bfd = abfd; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | static int | |
1535 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
1536 | { | |
1537 | bfd *dll_bfd; | |
1538 | map_code_section_args map_args; | |
1539 | asection *lowest_sect; | |
1540 | char *name; | |
1541 | if (dll_name == NULL || target == NULL) | |
1542 | return 0; | |
1543 | name = strdup (dll_name); | |
1544 | dll_bfd = bfd_openr (name, "pei-i386"); | |
1545 | if (dll_bfd == NULL) | |
1546 | return 0; | |
1547 | ||
1548 | if (bfd_check_format (dll_bfd, bfd_object)) | |
1549 | { | |
1550 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
1551 | if (lowest_sect == NULL) | |
1552 | return 0; | |
1553 | map_args.target = target; | |
1554 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
1555 | ||
1556 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (PTR) (&map_args)); | |
1557 | } | |
1558 | ||
1559 | return 1; | |
1560 | } | |
1561 | ||
1562 | static void | |
1563 | core_section_load_dll_symbols (bfd * abfd, asection * sect, PTR obj) | |
1564 | { | |
1565 | struct target_ops *target = (struct target_ops *) obj; | |
1566 | ||
1567 | DWORD base_addr; | |
1568 | ||
1569 | int dll_name_size; | |
1570 | char *dll_name = NULL; | |
1571 | char *buf = NULL; | |
1572 | struct win32_pstatus *pstatus; | |
1573 | char *p; | |
1574 | ||
1575 | if (strncmp (sect->name, ".module", 7)) | |
1576 | return; | |
1577 | ||
1578 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
1579 | if (!buf) | |
1580 | { | |
1581 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1582 | goto out; | |
1583 | } | |
1584 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
1585 | goto out; | |
1586 | ||
1587 | pstatus = (struct win32_pstatus *) buf; | |
1588 | ||
1589 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
1590 | dll_name_size = pstatus->data.module_info.module_name_size; | |
1591 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
1592 | goto out; | |
1593 | ||
1594 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
1595 | if (!dll_name) | |
1596 | { | |
1597 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1598 | goto out; | |
1599 | } | |
1600 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
1601 | ||
1602 | while ((p = strchr (dll_name, '\\'))) | |
1603 | *p = '/'; | |
1604 | ||
1605 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
1606 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
1607 | ||
1608 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
1609 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
1610 | ||
1611 | out: | |
1612 | if (buf) | |
1613 | free (buf); | |
1614 | if (dll_name) | |
1615 | free (dll_name); | |
1616 | return; | |
1617 | } | |
1618 | ||
1619 | void | |
1620 | child_solib_add (char *filename ATTRIBUTE_UNUSED, int from_tty ATTRIBUTE_UNUSED, struct target_ops *target) | |
1621 | { | |
1622 | if (core_bfd) | |
1623 | { | |
1624 | child_clear_solibs (); | |
1625 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
1626 | } | |
1627 | else | |
1628 | { | |
1629 | if (solib_end && solib_end->name) | |
1630 | solib_symbols_add (solib_end->name, solib_end->load_addr); | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | static void | |
1635 | fetch_elf_core_registers (char *core_reg_sect, | |
1636 | unsigned core_reg_size, | |
1637 | int which, | |
1638 | CORE_ADDR reg_addr) | |
1639 | { | |
1640 | int r; | |
1641 | if (core_reg_size < sizeof (CONTEXT)) | |
1642 | { | |
1643 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
1644 | return; | |
1645 | } | |
1646 | for (r = 0; r < NUM_REGS; r++) | |
1647 | supply_register (r, core_reg_sect + mappings[r]); | |
1648 | } | |
1649 | ||
1650 | static struct core_fns win32_elf_core_fns = | |
1651 | { | |
1652 | bfd_target_elf_flavour, | |
1653 | default_check_format, | |
1654 | default_core_sniffer, | |
1655 | fetch_elf_core_registers, | |
1656 | NULL | |
1657 | }; | |
1658 | ||
1659 | void | |
1660 | _initialize_core_win32 () | |
1661 | { | |
1662 | add_core_fns (&win32_elf_core_fns); | |
1663 | } |