Commit | Line | Data |
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24e60978 | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
b5edcb45 | 2 | Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc. |
24e60978 | 3 | Contributed by Cygnus Support. |
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 | |
cad9cd60 GN |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
20 | */ | |
24e60978 SC |
21 | |
22 | /* by Steve Chamberlain, sac@cygnus.com */ | |
23 | ||
e88c49c3 DE |
24 | /* We assume we're being built with and will be used for cygwin32. */ |
25 | ||
24e60978 SC |
26 | #include "defs.h" |
27 | #include "frame.h" /* required by inferior.h */ | |
28 | #include "inferior.h" | |
29 | #include "target.h" | |
30 | #include "wait.h" | |
31 | #include "gdbcore.h" | |
32 | #include "command.h" | |
33 | #include <signal.h> | |
34 | #include <sys/types.h> | |
35 | #include <fcntl.h> | |
cad9cd60 GN |
36 | #include <stdlib.h> |
37 | ||
38 | #ifdef _MSC_VER | |
28444bf3 | 39 | #include "windefs.h" |
cad9cd60 GN |
40 | #else /* other WIN32 compiler */ |
41 | #include <windows.h> | |
42 | #endif | |
43 | ||
24e60978 | 44 | #include "buildsym.h" |
1ef980b9 SC |
45 | #include "symfile.h" |
46 | #include "objfiles.h" | |
24e60978 | 47 | #include "gdb_string.h" |
fdfa3315 | 48 | #include "gdbthread.h" |
24e60978 | 49 | #include "gdbcmd.h" |
1750a5ef | 50 | #include <sys/param.h> |
e88c49c3 | 51 | #include <unistd.h> |
24e60978 | 52 | |
1ef980b9 SC |
53 | #define CHECK(x) check (x, __FILE__,__LINE__) |
54 | #define DEBUG_EXEC(x) if (debug_exec) printf x | |
55 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
56 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
57 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
24e60978 SC |
58 | |
59 | /* Forward declaration */ | |
60 | extern struct target_ops child_ops; | |
61 | ||
b607efe7 FF |
62 | static void child_stop PARAMS ((void)); |
63 | ||
24e60978 SC |
64 | /* The most recently read context. Inspect ContextFlags to see what |
65 | bits are valid. */ | |
66 | ||
67 | static CONTEXT context; | |
68 | ||
69 | /* The process and thread handles for the above context. */ | |
70 | ||
71 | static HANDLE current_process; | |
72 | static HANDLE current_thread; | |
73 | static int current_process_id; | |
74 | static int current_thread_id; | |
75 | ||
76 | /* Counts of things. */ | |
77 | static int exception_count = 0; | |
78 | static int event_count = 0; | |
79 | ||
80 | /* User options. */ | |
81 | static int new_console = 0; | |
82 | static int new_group = 0; | |
1ef980b9 SC |
83 | static int debug_exec = 0; /* show execution */ |
84 | static int debug_events = 0; /* show events from kernel */ | |
85 | static int debug_memory = 0; /* show target memory accesses */ | |
86 | static int debug_exceptions = 0; /* show target exceptions */ | |
24e60978 SC |
87 | |
88 | /* This vector maps GDB's idea of a register's number into an address | |
89 | in the win32 exception context vector. | |
90 | ||
91 | It also contains the bit mask needed to load the register in question. | |
92 | ||
93 | One day we could read a reg, we could inspect the context we | |
94 | already have loaded, if it doesn't have the bit set that we need, | |
95 | we read that set of registers in using GetThreadContext. If the | |
96 | context already contains what we need, we just unpack it. Then to | |
97 | write a register, first we have to ensure that the context contains | |
98 | the other regs of the group, and then we copy the info in and set | |
99 | out bit. */ | |
100 | ||
101 | struct regmappings | |
102 | { | |
103 | char *incontext; | |
104 | int mask; | |
105 | }; | |
106 | ||
454ffae5 | 107 | static const struct regmappings mappings[] = |
24e60978 | 108 | { |
454ffae5 SC |
109 | #ifdef __PPC__ |
110 | {(char *) &context.Gpr0, CONTEXT_INTEGER}, | |
111 | {(char *) &context.Gpr1, CONTEXT_INTEGER}, | |
112 | {(char *) &context.Gpr2, CONTEXT_INTEGER}, | |
113 | {(char *) &context.Gpr3, CONTEXT_INTEGER}, | |
114 | {(char *) &context.Gpr4, CONTEXT_INTEGER}, | |
115 | {(char *) &context.Gpr5, CONTEXT_INTEGER}, | |
116 | {(char *) &context.Gpr6, CONTEXT_INTEGER}, | |
117 | {(char *) &context.Gpr7, CONTEXT_INTEGER}, | |
118 | ||
119 | {(char *) &context.Gpr8, CONTEXT_INTEGER}, | |
120 | {(char *) &context.Gpr9, CONTEXT_INTEGER}, | |
121 | {(char *) &context.Gpr10, CONTEXT_INTEGER}, | |
122 | {(char *) &context.Gpr11, CONTEXT_INTEGER}, | |
123 | {(char *) &context.Gpr12, CONTEXT_INTEGER}, | |
124 | {(char *) &context.Gpr13, CONTEXT_INTEGER}, | |
125 | {(char *) &context.Gpr14, CONTEXT_INTEGER}, | |
126 | {(char *) &context.Gpr15, CONTEXT_INTEGER}, | |
127 | ||
128 | {(char *) &context.Gpr16, CONTEXT_INTEGER}, | |
129 | {(char *) &context.Gpr17, CONTEXT_INTEGER}, | |
130 | {(char *) &context.Gpr18, CONTEXT_INTEGER}, | |
131 | {(char *) &context.Gpr19, CONTEXT_INTEGER}, | |
132 | {(char *) &context.Gpr20, CONTEXT_INTEGER}, | |
133 | {(char *) &context.Gpr21, CONTEXT_INTEGER}, | |
134 | {(char *) &context.Gpr22, CONTEXT_INTEGER}, | |
135 | {(char *) &context.Gpr23, CONTEXT_INTEGER}, | |
136 | ||
137 | {(char *) &context.Gpr24, CONTEXT_INTEGER}, | |
138 | {(char *) &context.Gpr25, CONTEXT_INTEGER}, | |
139 | {(char *) &context.Gpr26, CONTEXT_INTEGER}, | |
140 | {(char *) &context.Gpr27, CONTEXT_INTEGER}, | |
141 | {(char *) &context.Gpr28, CONTEXT_INTEGER}, | |
142 | {(char *) &context.Gpr29, CONTEXT_INTEGER}, | |
143 | {(char *) &context.Gpr30, CONTEXT_INTEGER}, | |
144 | {(char *) &context.Gpr31, CONTEXT_INTEGER}, | |
145 | ||
146 | {(char *) &context.Fpr0, CONTEXT_FLOATING_POINT}, | |
147 | {(char *) &context.Fpr1, CONTEXT_FLOATING_POINT}, | |
148 | {(char *) &context.Fpr2, CONTEXT_FLOATING_POINT}, | |
149 | {(char *) &context.Fpr3, CONTEXT_FLOATING_POINT}, | |
150 | {(char *) &context.Fpr4, CONTEXT_FLOATING_POINT}, | |
151 | {(char *) &context.Fpr5, CONTEXT_FLOATING_POINT}, | |
152 | {(char *) &context.Fpr6, CONTEXT_FLOATING_POINT}, | |
153 | {(char *) &context.Fpr7, CONTEXT_FLOATING_POINT}, | |
154 | ||
155 | {(char *) &context.Fpr8, CONTEXT_FLOATING_POINT}, | |
156 | {(char *) &context.Fpr9, CONTEXT_FLOATING_POINT}, | |
157 | {(char *) &context.Fpr10, CONTEXT_FLOATING_POINT}, | |
158 | {(char *) &context.Fpr11, CONTEXT_FLOATING_POINT}, | |
159 | {(char *) &context.Fpr12, CONTEXT_FLOATING_POINT}, | |
160 | {(char *) &context.Fpr13, CONTEXT_FLOATING_POINT}, | |
161 | {(char *) &context.Fpr14, CONTEXT_FLOATING_POINT}, | |
162 | {(char *) &context.Fpr15, CONTEXT_FLOATING_POINT}, | |
163 | ||
164 | {(char *) &context.Fpr16, CONTEXT_FLOATING_POINT}, | |
165 | {(char *) &context.Fpr17, CONTEXT_FLOATING_POINT}, | |
166 | {(char *) &context.Fpr18, CONTEXT_FLOATING_POINT}, | |
167 | {(char *) &context.Fpr19, CONTEXT_FLOATING_POINT}, | |
168 | {(char *) &context.Fpr20, CONTEXT_FLOATING_POINT}, | |
169 | {(char *) &context.Fpr21, CONTEXT_FLOATING_POINT}, | |
170 | {(char *) &context.Fpr22, CONTEXT_FLOATING_POINT}, | |
171 | {(char *) &context.Fpr23, CONTEXT_FLOATING_POINT}, | |
172 | ||
173 | {(char *) &context.Fpr24, CONTEXT_FLOATING_POINT}, | |
174 | {(char *) &context.Fpr25, CONTEXT_FLOATING_POINT}, | |
175 | {(char *) &context.Fpr26, CONTEXT_FLOATING_POINT}, | |
176 | {(char *) &context.Fpr27, CONTEXT_FLOATING_POINT}, | |
177 | {(char *) &context.Fpr28, CONTEXT_FLOATING_POINT}, | |
178 | {(char *) &context.Fpr29, CONTEXT_FLOATING_POINT}, | |
179 | {(char *) &context.Fpr30, CONTEXT_FLOATING_POINT}, | |
180 | {(char *) &context.Fpr31, CONTEXT_FLOATING_POINT}, | |
181 | ||
454ffae5 SC |
182 | {(char *) &context.Iar, CONTEXT_CONTROL}, |
183 | {(char *) &context.Msr, CONTEXT_CONTROL}, | |
184 | {(char *) &context.Cr, CONTEXT_INTEGER}, | |
185 | {(char *) &context.Lr, CONTEXT_CONTROL}, | |
186 | {(char *) &context.Ctr, CONTEXT_CONTROL}, | |
187 | ||
188 | {(char *) &context.Xer, CONTEXT_INTEGER}, | |
189 | {0,0}, /* MQ, but there isn't one */ | |
190 | #else | |
24e60978 SC |
191 | {(char *) &context.Eax, CONTEXT_INTEGER}, |
192 | {(char *) &context.Ecx, CONTEXT_INTEGER}, | |
193 | {(char *) &context.Edx, CONTEXT_INTEGER}, | |
194 | {(char *) &context.Ebx, CONTEXT_INTEGER}, | |
195 | {(char *) &context.Esp, CONTEXT_CONTROL}, | |
196 | {(char *) &context.Ebp, CONTEXT_CONTROL}, | |
197 | {(char *) &context.Esi, CONTEXT_INTEGER}, | |
198 | {(char *) &context.Edi, CONTEXT_INTEGER}, | |
199 | {(char *) &context.Eip, CONTEXT_CONTROL}, | |
200 | {(char *) &context.EFlags, CONTEXT_CONTROL}, | |
201 | {(char *) &context.SegCs, CONTEXT_SEGMENTS}, | |
202 | {(char *) &context.SegSs, CONTEXT_SEGMENTS}, | |
203 | {(char *) &context.SegDs, CONTEXT_SEGMENTS}, | |
204 | {(char *) &context.SegEs, CONTEXT_SEGMENTS}, | |
205 | {(char *) &context.SegFs, CONTEXT_SEGMENTS}, | |
206 | {(char *) &context.SegGs, CONTEXT_SEGMENTS}, | |
207 | {&context.FloatSave.RegisterArea[0 * 10], CONTEXT_FLOATING_POINT}, | |
208 | {&context.FloatSave.RegisterArea[1 * 10], CONTEXT_FLOATING_POINT}, | |
209 | {&context.FloatSave.RegisterArea[2 * 10], CONTEXT_FLOATING_POINT}, | |
210 | {&context.FloatSave.RegisterArea[3 * 10], CONTEXT_FLOATING_POINT}, | |
211 | {&context.FloatSave.RegisterArea[4 * 10], CONTEXT_FLOATING_POINT}, | |
212 | {&context.FloatSave.RegisterArea[5 * 10], CONTEXT_FLOATING_POINT}, | |
213 | {&context.FloatSave.RegisterArea[6 * 10], CONTEXT_FLOATING_POINT}, | |
214 | {&context.FloatSave.RegisterArea[7 * 10], CONTEXT_FLOATING_POINT}, | |
454ffae5 | 215 | #endif |
24e60978 SC |
216 | }; |
217 | ||
24e60978 SC |
218 | /* This vector maps the target's idea of an exception (extracted |
219 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
220 | ||
221 | struct xlate_exception | |
222 | { | |
223 | int them; | |
224 | enum target_signal us; | |
225 | }; | |
226 | ||
24e60978 SC |
227 | static const struct xlate_exception |
228 | xlate[] = | |
229 | { | |
230 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 231 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
232 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
233 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
234 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
235 | {-1, -1}}; | |
236 | ||
24e60978 SC |
237 | static void |
238 | check (BOOL ok, const char *file, int line) | |
239 | { | |
240 | if (!ok) | |
241 | printf_filtered ("error return %s:%d was %d\n", file, line, GetLastError ()); | |
242 | } | |
243 | ||
244 | static void | |
245 | child_fetch_inferior_registers (int r) | |
246 | { | |
247 | if (r < 0) | |
248 | { | |
249 | for (r = 0; r < NUM_REGS; r++) | |
250 | child_fetch_inferior_registers (r); | |
251 | } | |
252 | else | |
253 | { | |
254 | supply_register (r, mappings[r].incontext); | |
255 | } | |
256 | } | |
257 | ||
258 | static void | |
259 | child_store_inferior_registers (int r) | |
260 | { | |
261 | if (r < 0) | |
262 | { | |
263 | for (r = 0; r < NUM_REGS; r++) | |
264 | child_store_inferior_registers (r); | |
265 | } | |
266 | else | |
267 | { | |
268 | read_register_gen (r, mappings[r].incontext); | |
269 | } | |
270 | } | |
271 | ||
272 | ||
273 | /* Wait for child to do something. Return pid of child, or -1 in case | |
274 | of error; store status through argument pointer OURSTATUS. */ | |
275 | ||
1750a5ef SC |
276 | static int |
277 | handle_load_dll (char *eventp) | |
24e60978 | 278 | { |
1750a5ef | 279 | DEBUG_EVENT * event = (DEBUG_EVENT *)eventp; |
24e60978 SC |
280 | DWORD dll_name_ptr; |
281 | DWORD done; | |
282 | ||
283 | ReadProcessMemory (current_process, | |
284 | (DWORD) event->u.LoadDll.lpImageName, | |
285 | (char *) &dll_name_ptr, | |
286 | sizeof (dll_name_ptr), &done); | |
287 | ||
288 | /* See if we could read the address of a string, and that the | |
289 | address isn't null. */ | |
290 | ||
291 | if (done == sizeof (dll_name_ptr) && dll_name_ptr) | |
292 | { | |
1ef980b9 SC |
293 | char *dll_name, *dll_basename; |
294 | struct objfile *objfile; | |
295 | char unix_dll_name[MAX_PATH]; | |
24e60978 SC |
296 | int size = event->u.LoadDll.fUnicode ? sizeof (WCHAR) : sizeof (char); |
297 | int len = 0; | |
298 | char b[2]; | |
299 | do | |
300 | { | |
301 | ReadProcessMemory (current_process, | |
302 | dll_name_ptr + len * size, | |
303 | &b, | |
304 | size, | |
305 | &done); | |
306 | len++; | |
307 | } | |
308 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
309 | ||
24e60978 SC |
310 | dll_name = alloca (len); |
311 | ||
312 | if (event->u.LoadDll.fUnicode) | |
313 | { | |
314 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
315 | ReadProcessMemory (current_process, | |
316 | dll_name_ptr, | |
317 | unicode_dll_name, | |
318 | len * sizeof (WCHAR), | |
319 | &done); | |
320 | ||
321 | WideCharToMultiByte (CP_ACP, 0, | |
322 | unicode_dll_name, len, | |
323 | dll_name, len, 0, 0); | |
324 | } | |
325 | else | |
326 | { | |
327 | ReadProcessMemory (current_process, | |
328 | dll_name_ptr, | |
329 | dll_name, | |
330 | len, | |
331 | &done); | |
332 | } | |
333 | ||
2dcfc9c7 DE |
334 | /* FIXME: Can we delete this call? */ |
335 | cygwin32_conv_to_posix_path (dll_name, unix_dll_name); | |
1ef980b9 | 336 | |
24e60978 SC |
337 | /* FIXME!! It would be nice to define one symbol which pointed to the |
338 | front of the dll if we can't find any symbols. */ | |
339 | ||
1ef980b9 SC |
340 | if (!(dll_basename = strrchr(dll_name, '\\'))) |
341 | dll_basename = strrchr(dll_name, '/'); | |
342 | ||
343 | ALL_OBJFILES(objfile) | |
344 | { | |
345 | char *objfile_basename; | |
346 | if (!(objfile_basename = strrchr(objfile->name, '\\'))) | |
347 | objfile_basename = strrchr(objfile->name, '/'); | |
348 | ||
349 | if (dll_basename && objfile_basename && | |
350 | strcmp(dll_basename+1, objfile_basename+1) == 0) | |
351 | { | |
352 | printf_unfiltered ("%s (symbols previously loaded)\n", | |
353 | dll_basename + 1); | |
354 | return 1; | |
355 | } | |
356 | } | |
1ef980b9 SC |
357 | |
358 | context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT; | |
24e60978 SC |
359 | GetThreadContext (current_thread, &context); |
360 | ||
1750a5ef SC |
361 | /* The symbols in a dll are offset by 0x1000, which is the |
362 | the offset from 0 of the first byte in an image - because | |
363 | of the file header and the section alignment. | |
364 | ||
365 | FIXME: Is this the real reason that we need the 0x1000 ? */ | |
366 | ||
367 | ||
1ef980b9 | 368 | symbol_file_add (unix_dll_name, 0, |
1750a5ef | 369 | (int) event->u.LoadDll.lpBaseOfDll + 0x1000, 0, 0, 0); |
24e60978 | 370 | |
1ef980b9 SC |
371 | printf_unfiltered ("%x:%s\n", event->u.LoadDll.lpBaseOfDll, |
372 | unix_dll_name); | |
24e60978 | 373 | } |
1750a5ef | 374 | return 1; |
24e60978 SC |
375 | } |
376 | ||
377 | ||
36339ecd | 378 | static int |
24e60978 SC |
379 | handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus) |
380 | { | |
381 | int i; | |
382 | int done = 0; | |
383 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
384 | ||
24e60978 | 385 | |
1ef980b9 | 386 | switch (event->u.Exception.ExceptionRecord.ExceptionCode) |
24e60978 | 387 | { |
1ef980b9 SC |
388 | case EXCEPTION_ACCESS_VIOLATION: |
389 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08x\n", | |
390 | event->u.Exception.ExceptionRecord.ExceptionAddress)); | |
391 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
392 | break; | |
393 | case STATUS_STACK_OVERFLOW: | |
394 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n", | |
395 | event->u.Exception.ExceptionRecord.ExceptionAddress)); | |
396 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
397 | break; | |
398 | case EXCEPTION_BREAKPOINT: | |
399 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08x\n", | |
400 | event->u.Exception.ExceptionRecord.ExceptionAddress)); | |
401 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
402 | break; | |
403 | case DBG_CONTROL_C: | |
404 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08x\n", | |
405 | event->u.Exception.ExceptionRecord.ExceptionAddress)); | |
406 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
407 | break; | |
408 | case EXCEPTION_SINGLE_STEP: | |
409 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08x\n", | |
410 | event->u.Exception.ExceptionRecord.ExceptionAddress)); | |
411 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
412 | break; | |
413 | default: | |
36339ecd ILT |
414 | /* This may be a structured exception handling exception. In |
415 | that case, we want to let the program try to handle it, and | |
416 | only break if we see the exception a second time. */ | |
417 | if (event->u.Exception.dwFirstChance) | |
418 | return 0; | |
419 | ||
1ef980b9 SC |
420 | printf_unfiltered ("gdb: unknown target exception 0x%08x at 0x%08x\n", |
421 | event->u.Exception.ExceptionRecord.ExceptionCode, | |
422 | event->u.Exception.ExceptionRecord.ExceptionAddress); | |
24e60978 | 423 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 424 | break; |
24e60978 | 425 | } |
1ef980b9 | 426 | context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT; |
24e60978 SC |
427 | GetThreadContext (current_thread, &context); |
428 | exception_count++; | |
36339ecd | 429 | return 1; |
24e60978 SC |
430 | } |
431 | ||
432 | static int | |
433 | child_wait (int pid, struct target_waitstatus *ourstatus) | |
434 | { | |
435 | /* We loop when we get a non-standard exception rather than return | |
436 | with a SPURIOUS because resume can try and step or modify things, | |
437 | which needs a current_thread. But some of these exceptions mark | |
438 | the birth or death of threads, which mean that the current thread | |
439 | isn't necessarily what you think it is. */ | |
440 | ||
441 | while (1) | |
442 | { | |
443 | DEBUG_EVENT event; | |
444 | BOOL t = WaitForDebugEvent (&event, INFINITE); | |
1ef980b9 | 445 | char *p; |
36339ecd | 446 | DWORD continue_status; |
24e60978 SC |
447 | |
448 | event_count++; | |
449 | ||
450 | current_thread_id = event.dwThreadId; | |
451 | current_process_id = event.dwProcessId; | |
452 | ||
36339ecd ILT |
453 | continue_status = DBG_CONTINUE; |
454 | ||
24e60978 SC |
455 | switch (event.dwDebugEventCode) |
456 | { | |
457 | case CREATE_THREAD_DEBUG_EVENT: | |
1ef980b9 SC |
458 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
459 | event.dwProcessId, event.dwThreadId, | |
460 | "CREATE_THREAD_DEBUG_EVENT")); | |
461 | break; | |
24e60978 | 462 | case EXIT_THREAD_DEBUG_EVENT: |
1ef980b9 SC |
463 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
464 | event.dwProcessId, event.dwThreadId, | |
465 | "EXIT_THREAD_DEBUG_EVENT")); | |
466 | break; | |
24e60978 | 467 | case CREATE_PROCESS_DEBUG_EVENT: |
1ef980b9 SC |
468 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
469 | event.dwProcessId, event.dwThreadId, | |
470 | "CREATE_PROCESS_DEBUG_EVENT")); | |
24e60978 SC |
471 | break; |
472 | ||
473 | case EXIT_PROCESS_DEBUG_EVENT: | |
1ef980b9 SC |
474 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
475 | event.dwProcessId, event.dwThreadId, | |
476 | "EXIT_PROCESS_DEBUG_EVENT")); | |
24e60978 SC |
477 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
478 | ourstatus->value.integer = event.u.ExitProcess.dwExitCode; | |
479 | CloseHandle (current_process); | |
480 | CloseHandle (current_thread); | |
481 | return current_process_id; | |
482 | break; | |
483 | ||
484 | case LOAD_DLL_DEBUG_EVENT: | |
1ef980b9 SC |
485 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
486 | event.dwProcessId, event.dwThreadId, | |
487 | "LOAD_DLL_DEBUG_EVENT")); | |
488 | catch_errors (handle_load_dll, | |
489 | (char*) &event, | |
490 | "\n[failed reading symbols from DLL]\n", | |
491 | RETURN_MASK_ALL); | |
492 | registers_changed(); /* mark all regs invalid */ | |
24e60978 | 493 | break; |
1ef980b9 SC |
494 | case UNLOAD_DLL_DEBUG_EVENT: |
495 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
496 | event.dwProcessId, event.dwThreadId, | |
497 | "UNLOAD_DLL_DEBUG_EVENT")); | |
498 | break; /* FIXME: don't know what to do here */ | |
499 | case EXCEPTION_DEBUG_EVENT: | |
500 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
501 | event.dwProcessId, event.dwThreadId, | |
502 | "EXCEPTION_DEBUG_EVENT")); | |
36339ecd ILT |
503 | if (handle_exception (&event, ourstatus)) |
504 | return current_process_id; | |
505 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
506 | break; | |
1ef980b9 SC |
507 | |
508 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ | |
509 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
510 | event.dwProcessId, event.dwThreadId, | |
511 | "OUTPUT_DEBUG_STRING_EVENT")); | |
512 | if (target_read_string | |
513 | ((CORE_ADDR) event.u.DebugString.lpDebugStringData, | |
514 | &p, 1024, 0) && p && *p) | |
515 | { | |
516 | warning(p); | |
517 | free(p); | |
518 | } | |
519 | break; | |
24e60978 | 520 | default: |
1ef980b9 SC |
521 | printf_unfiltered ("gdb: kernel event for pid=%d tid=%d\n", |
522 | event.dwProcessId, event.dwThreadId); | |
523 | printf_unfiltered (" unknown event code %d\n", | |
524 | event.dwDebugEventCode); | |
24e60978 SC |
525 | break; |
526 | } | |
1ef980b9 SC |
527 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n", |
528 | current_process_id, current_thread_id)); | |
24e60978 SC |
529 | CHECK (ContinueDebugEvent (current_process_id, |
530 | current_thread_id, | |
36339ecd | 531 | continue_status)); |
24e60978 SC |
532 | } |
533 | } | |
534 | ||
24e60978 SC |
535 | /* Attach to process PID, then initialize for debugging it. */ |
536 | ||
537 | static void | |
538 | child_attach (args, from_tty) | |
539 | char *args; | |
540 | int from_tty; | |
541 | { | |
542 | BOOL ok; | |
543 | ||
544 | if (!args) | |
545 | error_no_arg ("process-id to attach"); | |
546 | ||
547 | current_process_id = strtoul (args, 0, 0); | |
548 | ||
549 | ok = DebugActiveProcess (current_process_id); | |
550 | ||
551 | if (!ok) | |
552 | error ("Can't attach to process."); | |
553 | ||
24e60978 SC |
554 | exception_count = 0; |
555 | event_count = 0; | |
556 | ||
557 | if (from_tty) | |
558 | { | |
559 | char *exec_file = (char *) get_exec_file (0); | |
560 | ||
561 | if (exec_file) | |
562 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
563 | target_pid_to_str (current_process_id)); | |
564 | else | |
565 | printf_unfiltered ("Attaching to %s\n", | |
566 | target_pid_to_str (current_process_id)); | |
567 | ||
568 | gdb_flush (gdb_stdout); | |
569 | } | |
570 | ||
571 | inferior_pid = current_process_id; | |
572 | push_target (&child_ops); | |
573 | } | |
574 | ||
24e60978 SC |
575 | static void |
576 | child_detach (args, from_tty) | |
577 | char *args; | |
578 | int from_tty; | |
579 | { | |
580 | if (from_tty) | |
581 | { | |
582 | char *exec_file = get_exec_file (0); | |
583 | if (exec_file == 0) | |
584 | exec_file = ""; | |
585 | printf_unfiltered ("Detaching from program: %s %s\n", exec_file, | |
586 | target_pid_to_str (inferior_pid)); | |
587 | gdb_flush (gdb_stdout); | |
588 | } | |
589 | inferior_pid = 0; | |
590 | unpush_target (&child_ops); | |
591 | } | |
592 | ||
24e60978 SC |
593 | /* Print status information about what we're accessing. */ |
594 | ||
595 | static void | |
596 | child_files_info (ignore) | |
597 | struct target_ops *ignore; | |
598 | { | |
599 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
600 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid)); | |
601 | } | |
602 | ||
603 | /* ARGSUSED */ | |
604 | static void | |
605 | child_open (arg, from_tty) | |
606 | char *arg; | |
607 | int from_tty; | |
608 | { | |
609 | error ("Use the \"run\" command to start a Unix child process."); | |
610 | } | |
611 | ||
eb708f2e | 612 | /* Start an inferior win32 child process and sets inferior_pid to its pid. |
24e60978 SC |
613 | EXEC_FILE is the file to run. |
614 | ALLARGS is a string containing the arguments to the program. | |
615 | ENV is the environment vector to pass. Errors reported with error(). */ | |
616 | ||
24e60978 SC |
617 | static void |
618 | child_create_inferior (exec_file, allargs, env) | |
619 | char *exec_file; | |
620 | char *allargs; | |
621 | char **env; | |
622 | { | |
1750a5ef SC |
623 | char real_path[MAXPATHLEN]; |
624 | char *winenv; | |
625 | char *temp; | |
626 | int envlen; | |
627 | int i; | |
628 | ||
24e60978 SC |
629 | STARTUPINFO si; |
630 | PROCESS_INFORMATION pi; | |
631 | struct target_waitstatus dummy; | |
632 | BOOL ret; | |
633 | DWORD flags; | |
eb708f2e | 634 | char *args; |
24e60978 SC |
635 | |
636 | if (!exec_file) | |
637 | { | |
638 | error ("No executable specified, use `target exec'.\n"); | |
639 | } | |
640 | ||
641 | memset (&si, 0, sizeof (si)); | |
642 | si.cb = sizeof (si); | |
643 | ||
2dcfc9c7 | 644 | cygwin32_conv_to_win32_path (exec_file, real_path); |
24e60978 | 645 | |
1ef980b9 | 646 | flags = DEBUG_ONLY_THIS_PROCESS; |
24e60978 SC |
647 | |
648 | if (new_group) | |
649 | flags |= CREATE_NEW_PROCESS_GROUP; | |
650 | ||
651 | if (new_console) | |
652 | flags |= CREATE_NEW_CONSOLE; | |
653 | ||
3d78f532 SC |
654 | args = alloca (strlen (real_path) + strlen (allargs) + 2); |
655 | ||
656 | strcpy (args, real_path); | |
eb708f2e | 657 | |
eb708f2e SC |
658 | strcat (args, " "); |
659 | strcat (args, allargs); | |
660 | ||
e88c49c3 DE |
661 | /* Prepare the environment vars for CreateProcess. */ |
662 | { | |
663 | /* This code use to assume all env vars were file names and would | |
664 | translate them all to win32 style. That obviously doesn't work in the | |
2dcfc9c7 DE |
665 | general case. The current rule is that we only translate PATH. |
666 | We need to handle PATH because we're about to call CreateProcess and | |
667 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
668 | in both posix and win32 environments. cygwin.dll will change it back | |
669 | to posix style if necessary. */ | |
e88c49c3 DE |
670 | |
671 | static const char *conv_path_names[] = | |
672 | { | |
673 | "PATH=", | |
674 | 0 | |
675 | }; | |
e88c49c3 DE |
676 | |
677 | /* CreateProcess takes the environment list as a null terminated set of | |
678 | strings (i.e. two nulls terminate the list). */ | |
679 | ||
680 | /* Get total size for env strings. */ | |
681 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
682 | { | |
2dcfc9c7 | 683 | int j, len; |
e88c49c3 | 684 | |
2dcfc9c7 DE |
685 | for (j = 0; conv_path_names[j]; j++) |
686 | { | |
687 | len = strlen (conv_path_names[j]); | |
688 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 689 | { |
2dcfc9c7 DE |
690 | if (cygwin32_posix_path_list_p (env[i] + len)) |
691 | envlen += len | |
692 | + cygwin32_posix_to_win32_path_list_buf_size (env[i] + len); | |
693 | else | |
694 | envlen += strlen (env[i]) + 1; | |
695 | break; | |
e88c49c3 | 696 | } |
e88c49c3 | 697 | } |
2dcfc9c7 | 698 | if (conv_path_names[j] == NULL) |
e88c49c3 DE |
699 | envlen += strlen (env[i]) + 1; |
700 | } | |
701 | ||
702 | winenv = alloca (envlen + 1); | |
703 | ||
704 | /* Copy env strings into new buffer. */ | |
705 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) | |
706 | { | |
2dcfc9c7 | 707 | int j, len; |
e88c49c3 | 708 | |
2dcfc9c7 DE |
709 | for (j = 0; conv_path_names[j]; j++) |
710 | { | |
711 | len = strlen (conv_path_names[j]); | |
712 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 713 | { |
2dcfc9c7 | 714 | if (cygwin32_posix_path_list_p (env[i] + len)) |
e88c49c3 DE |
715 | { |
716 | memcpy (temp, env[i], len); | |
717 | cygwin32_posix_to_win32_path_list (env[i] + len, temp + len); | |
e88c49c3 | 718 | } |
2dcfc9c7 DE |
719 | else |
720 | strcpy (temp, env[i]); | |
721 | break; | |
e88c49c3 | 722 | } |
e88c49c3 | 723 | } |
2dcfc9c7 | 724 | if (conv_path_names[j] == NULL) |
e88c49c3 | 725 | strcpy (temp, env[i]); |
2dcfc9c7 | 726 | |
e88c49c3 DE |
727 | temp += strlen (temp) + 1; |
728 | } | |
729 | ||
730 | /* Final nil string to terminate new env. */ | |
731 | *temp = 0; | |
732 | } | |
1750a5ef | 733 | |
1750a5ef | 734 | ret = CreateProcess (0, |
3d78f532 | 735 | args, /* command line */ |
24e60978 SC |
736 | NULL, /* Security */ |
737 | NULL, /* thread */ | |
738 | TRUE, /* inherit handles */ | |
739 | flags, /* start flags */ | |
1750a5ef | 740 | winenv, |
24e60978 SC |
741 | NULL, /* current directory */ |
742 | &si, | |
743 | &pi); | |
744 | if (!ret) | |
686941a9 | 745 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError()); |
24e60978 SC |
746 | |
747 | exception_count = 0; | |
748 | event_count = 0; | |
749 | ||
750 | inferior_pid = pi.dwProcessId; | |
751 | current_process = pi.hProcess; | |
752 | current_thread = pi.hThread; | |
753 | current_process_id = pi.dwProcessId; | |
754 | current_thread_id = pi.dwThreadId; | |
755 | push_target (&child_ops); | |
756 | init_thread_list (); | |
757 | init_wait_for_inferior (); | |
758 | clear_proceed_status (); | |
759 | target_terminal_init (); | |
760 | target_terminal_inferior (); | |
761 | ||
762 | /* Ignore the first trap */ | |
763 | child_wait (inferior_pid, &dummy); | |
764 | ||
765 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); | |
766 | } | |
767 | ||
768 | static void | |
769 | child_mourn_inferior () | |
770 | { | |
b5edcb45 ILT |
771 | (void) ContinueDebugEvent (current_process_id, |
772 | current_thread_id, | |
773 | DBG_CONTINUE); | |
24e60978 SC |
774 | unpush_target (&child_ops); |
775 | generic_mourn_inferior (); | |
776 | } | |
777 | ||
24e60978 SC |
778 | /* Send a SIGINT to the process group. This acts just like the user typed a |
779 | ^C on the controlling terminal. */ | |
780 | ||
b607efe7 | 781 | static void |
24e60978 SC |
782 | child_stop () |
783 | { | |
1ef980b9 | 784 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
24e60978 | 785 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0)); |
1ef980b9 | 786 | registers_changed(); /* refresh register state */ |
24e60978 SC |
787 | } |
788 | ||
789 | int | |
eb708f2e SC |
790 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, |
791 | int write, struct target_ops *target) | |
24e60978 SC |
792 | { |
793 | DWORD done; | |
794 | if (write) | |
795 | { | |
1ef980b9 SC |
796 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08x\n", |
797 | len, memaddr)); | |
24e60978 SC |
798 | WriteProcessMemory (current_process, memaddr, our, len, &done); |
799 | FlushInstructionCache (current_process, memaddr, len); | |
800 | } | |
801 | else | |
802 | { | |
1ef980b9 SC |
803 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08x\n", |
804 | len, memaddr)); | |
24e60978 SC |
805 | ReadProcessMemory (current_process, memaddr, our, len, &done); |
806 | } | |
807 | return done; | |
808 | } | |
809 | ||
810 | void | |
811 | child_kill_inferior (void) | |
812 | { | |
813 | CHECK (TerminateProcess (current_process, 0)); | |
b5edcb45 ILT |
814 | |
815 | for (;;) | |
816 | { | |
817 | DEBUG_EVENT event; | |
818 | if (!ContinueDebugEvent (current_process_id, | |
819 | current_thread_id, | |
820 | DBG_CONTINUE)) | |
821 | break; | |
822 | if (!WaitForDebugEvent (&event, INFINITE)) | |
823 | break; | |
824 | current_thread_id = event.dwThreadId; | |
825 | current_process_id = event.dwProcessId; | |
826 | if (event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
827 | break; | |
828 | } | |
829 | ||
24e60978 SC |
830 | CHECK (CloseHandle (current_process)); |
831 | CHECK (CloseHandle (current_thread)); | |
1ef980b9 | 832 | target_mourn_inferior(); /* or just child_mourn_inferior? */ |
24e60978 SC |
833 | } |
834 | ||
835 | void | |
836 | child_resume (int pid, int step, enum target_signal signal) | |
837 | { | |
1ef980b9 SC |
838 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, signal=%d);\n", |
839 | pid, step, signal)); | |
24e60978 SC |
840 | |
841 | if (step) | |
842 | { | |
454ffae5 SC |
843 | #ifdef __PPC__ |
844 | warning ("Single stepping not done.\n"); | |
845 | #endif | |
1ef980b9 | 846 | #ifdef i386 |
24e60978 SC |
847 | /* Single step by setting t bit */ |
848 | child_fetch_inferior_registers (PS_REGNUM); | |
849 | context.EFlags |= FLAG_TRACE_BIT; | |
454ffae5 | 850 | #endif |
24e60978 SC |
851 | } |
852 | ||
853 | if (context.ContextFlags) | |
854 | { | |
855 | CHECK (SetThreadContext (current_thread, &context)); | |
856 | context.ContextFlags = 0; | |
857 | } | |
858 | ||
859 | if (signal) | |
860 | { | |
861 | fprintf_unfiltered (gdb_stderr, "Can't send signals to the child.\n"); | |
862 | } | |
863 | ||
1ef980b9 SC |
864 | DEBUG_EVENTS (("gdb: ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n", |
865 | current_process_id, current_thread_id)); | |
24e60978 SC |
866 | CHECK (ContinueDebugEvent (current_process_id, |
867 | current_thread_id, | |
868 | DBG_CONTINUE)); | |
869 | } | |
870 | ||
871 | static void | |
872 | child_prepare_to_store () | |
873 | { | |
874 | /* Do nothing, since we can store individual regs */ | |
875 | } | |
876 | ||
877 | static int | |
878 | child_can_run () | |
879 | { | |
880 | return 1; | |
881 | } | |
882 | ||
883 | static void | |
884 | child_close () | |
885 | { | |
1ef980b9 | 886 | DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid)); |
24e60978 | 887 | } |
1ef980b9 | 888 | |
c719b714 JM |
889 | struct target_ops child_ops ; |
890 | ||
891 | static void init_child_ops(void) | |
24e60978 | 892 | { |
c719b714 JM |
893 | child_ops.to_shortname = "child"; |
894 | child_ops.to_longname = "Win32 child process"; | |
895 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
896 | child_ops.to_open = child_open; | |
897 | child_ops.to_close = child_close; | |
898 | child_ops.to_attach = child_attach; | |
899 | child_ops.to_detach = child_detach; | |
900 | child_ops.to_resume = child_resume; | |
901 | child_ops.to_wait = child_wait; | |
902 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
903 | child_ops.to_store_registers = child_store_inferior_registers; | |
904 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
905 | child_ops.to_xfer_memory = child_xfer_memory; | |
906 | child_ops.to_files_info = child_files_info; | |
907 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
908 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
909 | child_ops.to_terminal_init = terminal_init_inferior; | |
910 | child_ops.to_terminal_inferior = terminal_inferior; | |
911 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
912 | child_ops.to_terminal_ours = terminal_ours; | |
913 | child_ops.to_terminal_info = child_terminal_info; | |
914 | child_ops.to_kill = child_kill_inferior; | |
915 | child_ops.to_load = 0; | |
916 | child_ops.to_lookup_symbol = 0; | |
917 | child_ops.to_create_inferior = child_create_inferior; | |
918 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
919 | child_ops.to_can_run = child_can_run; | |
920 | child_ops.to_notice_signals = 0; | |
921 | child_ops.to_thread_alive = 0; | |
922 | child_ops.to_stop = child_stop; | |
923 | child_ops.to_stratum = process_stratum; | |
924 | child_ops.DONT_USE = 0; | |
925 | child_ops.to_has_all_memory = 1; | |
926 | child_ops.to_has_memory = 1; | |
927 | child_ops.to_has_stack = 1; | |
928 | child_ops.to_has_registers = 1; | |
929 | child_ops.to_has_execution = 1; | |
930 | child_ops.to_sections = 0; | |
931 | child_ops.to_sections_end = 0; | |
932 | child_ops.to_magic = OPS_MAGIC; | |
933 | } | |
24e60978 SC |
934 | |
935 | void | |
936 | _initialize_inftarg () | |
937 | { | |
1ef980b9 | 938 | struct cmd_list_element *c; |
c719b714 | 939 | init_child_ops() ; |
1ef980b9 | 940 | |
24e60978 SC |
941 | add_show_from_set |
942 | (add_set_cmd ("new-console", class_support, var_boolean, | |
943 | (char *) &new_console, | |
944 | "Set creation of new console when creating child process.", | |
945 | &setlist), | |
946 | &showlist); | |
947 | ||
948 | add_show_from_set | |
949 | (add_set_cmd ("new-group", class_support, var_boolean, | |
950 | (char *) &new_group, | |
951 | "Set creation of new group when creating child process.", | |
952 | &setlist), | |
953 | &showlist); | |
954 | ||
1ef980b9 SC |
955 | add_show_from_set |
956 | (add_set_cmd ("debugexec", class_support, var_boolean, | |
957 | (char *) &debug_exec, | |
958 | "Set whether to display execution in child process.", | |
959 | &setlist), | |
960 | &showlist); | |
961 | ||
962 | add_show_from_set | |
963 | (add_set_cmd ("debugevents", class_support, var_boolean, | |
964 | (char *) &debug_events, | |
965 | "Set whether to display kernel events in child process.", | |
966 | &setlist), | |
967 | &showlist); | |
968 | ||
969 | add_show_from_set | |
970 | (add_set_cmd ("debugmemory", class_support, var_boolean, | |
971 | (char *) &debug_memory, | |
972 | "Set whether to display memory accesses in child process.", | |
973 | &setlist), | |
974 | &showlist); | |
975 | ||
976 | add_show_from_set | |
977 | (add_set_cmd ("debugexceptions", class_support, var_boolean, | |
978 | (char *) &debug_exceptions, | |
979 | "Set whether to display kernel exceptions in child process.", | |
980 | &setlist), | |
981 | &showlist); | |
982 | ||
24e60978 SC |
983 | add_target (&child_ops); |
984 | } |