Commit | Line | Data |
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c906108c | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
0a65a603 AC |
2 | |
3 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free | |
4 | Software Foundation, Inc. | |
5 | ||
e6433c28 | 6 | Contributed by Cygnus Solutions, A Red Hat Company. |
c906108c SS |
7 | |
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without eve nthe implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
c5aa993b | 22 | Foundation, Inc., 59 Temple Place - Suite 330, |
4e052eda | 23 | Boston, MA 02111-1307, USA. */ |
c906108c SS |
24 | |
25 | /* by Steve Chamberlain, sac@cygnus.com */ | |
26 | ||
27 | /* We assume we're being built with and will be used for cygwin. */ | |
28 | ||
29 | #include "defs.h" | |
97da3b20 | 30 | #include "tm.h" /* required for SSE registers */ |
c906108c SS |
31 | #include "frame.h" /* required by inferior.h */ |
32 | #include "inferior.h" | |
33 | #include "target.h" | |
c906108c SS |
34 | #include "gdbcore.h" |
35 | #include "command.h" | |
fa58ee11 | 36 | #include "completer.h" |
4e052eda | 37 | #include "regcache.h" |
2a3d5645 | 38 | #include "top.h" |
c25b74ac | 39 | #include "i386-tdep.h" |
c906108c SS |
40 | #include <signal.h> |
41 | #include <sys/types.h> | |
42 | #include <fcntl.h> | |
43 | #include <stdlib.h> | |
c906108c | 44 | #include <windows.h> |
c2d11a7d | 45 | #include <imagehlp.h> |
29fe111d | 46 | #include <sys/cygwin.h> |
c906108c SS |
47 | |
48 | #include "buildsym.h" | |
49 | #include "symfile.h" | |
50 | #include "objfiles.h" | |
51 | #include "gdb_string.h" | |
52 | #include "gdbthread.h" | |
53 | #include "gdbcmd.h" | |
54 | #include <sys/param.h> | |
c2d11a7d | 55 | #include <unistd.h> |
c906108c | 56 | |
7a292a7a | 57 | /* The ui's event loop. */ |
507f3c78 | 58 | extern int (*ui_loop_hook) (int signo); |
7a292a7a SS |
59 | |
60 | /* If we're not using the old Cygwin header file set, define the | |
61 | following which never should have been in the generic Win32 API | |
62 | headers in the first place since they were our own invention... */ | |
63 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 64 | enum |
8e860359 CF |
65 | { |
66 | FLAG_TRACE_BIT = 0x100, | |
67 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
68 | }; | |
7a292a7a | 69 | #endif |
8e860359 CF |
70 | #include <sys/procfs.h> |
71 | #include <psapi.h> | |
7a292a7a | 72 | |
97da3b20 | 73 | #ifdef HAVE_SSE_REGS |
fa4ba8da PM |
74 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
75 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 76 | #else |
fa4ba8da | 77 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS |
97da3b20 CF |
78 | #endif |
79 | ||
fa4ba8da PM |
80 | static unsigned dr[8]; |
81 | static int debug_registers_changed = 0; | |
82 | static int debug_registers_used = 0; | |
97da3b20 | 83 | |
c906108c SS |
84 | /* The string sent by cygwin when it processes a signal. |
85 | FIXME: This should be in a cygwin include file. */ | |
86 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
87 | ||
29fe111d | 88 | #define CHECK(x) check (x, __FILE__,__LINE__) |
c906108c SS |
89 | #define DEBUG_EXEC(x) if (debug_exec) printf x |
90 | #define DEBUG_EVENTS(x) if (debug_events) printf x | |
91 | #define DEBUG_MEM(x) if (debug_memory) printf x | |
92 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf x | |
93 | ||
94 | /* Forward declaration */ | |
95 | extern struct target_ops child_ops; | |
96 | ||
a14ed312 | 97 | static void child_stop (void); |
39f77062 | 98 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 99 | void child_kill_inferior (void); |
c906108c | 100 | |
8a892701 CF |
101 | static int last_sig = 0; /* Set if a signal was received from the |
102 | debugged process */ | |
c906108c SS |
103 | /* Thread information structure used to track information that is |
104 | not available in gdb's thread structure. */ | |
105 | typedef struct thread_info_struct | |
c5aa993b JM |
106 | { |
107 | struct thread_info_struct *next; | |
108 | DWORD id; | |
109 | HANDLE h; | |
110 | char *name; | |
111 | int suspend_count; | |
112 | CONTEXT context; | |
c2d11a7d | 113 | STACKFRAME sf; |
8e860359 CF |
114 | } |
115 | thread_info; | |
c2d11a7d | 116 | |
29fe111d | 117 | static thread_info thread_head; |
c906108c | 118 | |
c906108c SS |
119 | /* The process and thread handles for the above context. */ |
120 | ||
121 | static DEBUG_EVENT current_event; /* The current debug event from | |
122 | WaitForDebugEvent */ | |
123 | static HANDLE current_process_handle; /* Currently executing process */ | |
124 | static thread_info *current_thread; /* Info on currently selected thread */ | |
c5aa993b | 125 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
c906108c SS |
126 | |
127 | /* Counts of things. */ | |
128 | static int exception_count = 0; | |
129 | static int event_count = 0; | |
130 | ||
131 | /* User options. */ | |
132 | static int new_console = 0; | |
c2d11a7d | 133 | static int new_group = 1; |
c5aa993b JM |
134 | static int debug_exec = 0; /* show execution */ |
135 | static int debug_events = 0; /* show events from kernel */ | |
136 | static int debug_memory = 0; /* show target memory accesses */ | |
c906108c SS |
137 | static int debug_exceptions = 0; /* show target exceptions */ |
138 | ||
139 | /* This vector maps GDB's idea of a register's number into an address | |
140 | in the win32 exception context vector. | |
141 | ||
142 | It also contains the bit mask needed to load the register in question. | |
143 | ||
144 | One day we could read a reg, we could inspect the context we | |
145 | already have loaded, if it doesn't have the bit set that we need, | |
146 | we read that set of registers in using GetThreadContext. If the | |
147 | context already contains what we need, we just unpack it. Then to | |
148 | write a register, first we have to ensure that the context contains | |
149 | the other regs of the group, and then we copy the info in and set | |
150 | out bit. */ | |
151 | ||
152 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) | |
153 | static const int mappings[] = | |
154 | { | |
c5aa993b JM |
155 | context_offset (Eax), |
156 | context_offset (Ecx), | |
157 | context_offset (Edx), | |
158 | context_offset (Ebx), | |
159 | context_offset (Esp), | |
160 | context_offset (Ebp), | |
161 | context_offset (Esi), | |
162 | context_offset (Edi), | |
163 | context_offset (Eip), | |
164 | context_offset (EFlags), | |
165 | context_offset (SegCs), | |
166 | context_offset (SegSs), | |
167 | context_offset (SegDs), | |
168 | context_offset (SegEs), | |
169 | context_offset (SegFs), | |
170 | context_offset (SegGs), | |
171 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
172 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
173 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
174 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
175 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
176 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
177 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
178 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
c2d11a7d JM |
179 | context_offset (FloatSave.ControlWord), |
180 | context_offset (FloatSave.StatusWord), | |
181 | context_offset (FloatSave.TagWord), | |
182 | context_offset (FloatSave.ErrorSelector), | |
183 | context_offset (FloatSave.ErrorOffset), | |
184 | context_offset (FloatSave.DataSelector), | |
185 | context_offset (FloatSave.DataOffset), | |
ed9a39eb | 186 | context_offset (FloatSave.ErrorSelector) |
97da3b20 CF |
187 | #ifdef HAVE_SSE_REGS |
188 | /* XMM0-7 */ , | |
441532d7 PM |
189 | context_offset (ExtendedRegisters[10*16]), |
190 | context_offset (ExtendedRegisters[11*16]), | |
191 | context_offset (ExtendedRegisters[12*16]), | |
192 | context_offset (ExtendedRegisters[13*16]), | |
193 | context_offset (ExtendedRegisters[14*16]), | |
194 | context_offset (ExtendedRegisters[15*16]), | |
195 | context_offset (ExtendedRegisters[16*16]), | |
196 | context_offset (ExtendedRegisters[17*16]), | |
197 | /* MXCSR */ | |
198 | context_offset (ExtendedRegisters[24]) | |
97da3b20 | 199 | #endif |
c906108c SS |
200 | }; |
201 | ||
ed9a39eb JM |
202 | #undef context_offset |
203 | ||
c906108c SS |
204 | /* This vector maps the target's idea of an exception (extracted |
205 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
206 | ||
207 | struct xlate_exception | |
208 | { | |
209 | int them; | |
210 | enum target_signal us; | |
211 | }; | |
212 | ||
213 | static const struct xlate_exception | |
214 | xlate[] = | |
215 | { | |
216 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
217 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, | |
218 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, | |
219 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
220 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
221 | {-1, -1}}; | |
222 | ||
fa4ba8da PM |
223 | static void |
224 | check (BOOL ok, const char *file, int line) | |
225 | { | |
226 | if (!ok) | |
227 | printf_filtered ("error return %s:%d was %lu\n", file, line, | |
228 | GetLastError ()); | |
229 | } | |
230 | ||
231 | ||
c906108c SS |
232 | /* Find a thread record given a thread id. |
233 | If get_context then also retrieve the context for this | |
234 | thread. */ | |
235 | static thread_info * | |
236 | thread_rec (DWORD id, int get_context) | |
237 | { | |
238 | thread_info *th; | |
239 | ||
c5aa993b | 240 | for (th = &thread_head; (th = th->next) != NULL;) |
c906108c SS |
241 | if (th->id == id) |
242 | { | |
243 | if (!th->suspend_count && get_context) | |
244 | { | |
8a892701 | 245 | if (get_context > 0 && id != current_event.dwThreadId) |
c906108c SS |
246 | th->suspend_count = SuspendThread (th->h) + 1; |
247 | else if (get_context < 0) | |
248 | th->suspend_count = -1; | |
249 | ||
97da3b20 | 250 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
c906108c | 251 | GetThreadContext (th->h, &th->context); |
fa4ba8da PM |
252 | if (id == current_event.dwThreadId) |
253 | { | |
254 | /* Copy dr values from that thread. */ | |
255 | dr[0] = th->context.Dr0; | |
256 | dr[1] = th->context.Dr1; | |
257 | dr[2] = th->context.Dr2; | |
258 | dr[3] = th->context.Dr3; | |
259 | dr[6] = th->context.Dr6; | |
260 | dr[7] = th->context.Dr7; | |
261 | } | |
c906108c SS |
262 | } |
263 | return th; | |
264 | } | |
265 | ||
266 | return NULL; | |
267 | } | |
268 | ||
269 | /* Add a thread to the thread list */ | |
270 | static thread_info * | |
c5aa993b | 271 | child_add_thread (DWORD id, HANDLE h) |
c906108c SS |
272 | { |
273 | thread_info *th; | |
274 | ||
275 | if ((th = thread_rec (id, FALSE))) | |
276 | return th; | |
277 | ||
278 | th = (thread_info *) xmalloc (sizeof (*th)); | |
c5aa993b | 279 | memset (th, 0, sizeof (*th)); |
c906108c SS |
280 | th->id = id; |
281 | th->h = h; | |
282 | th->next = thread_head.next; | |
283 | thread_head.next = th; | |
39f77062 | 284 | add_thread (pid_to_ptid (id)); |
fa4ba8da PM |
285 | /* Set the debug registers for the new thread in they are used. */ |
286 | if (debug_registers_used) | |
287 | { | |
288 | /* Only change the value of the debug registers. */ | |
289 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
290 | CHECK (GetThreadContext (th->h, &th->context)); | |
291 | th->context.Dr0 = dr[0]; | |
292 | th->context.Dr1 = dr[1]; | |
293 | th->context.Dr2 = dr[2]; | |
294 | th->context.Dr3 = dr[3]; | |
295 | /* th->context.Dr6 = dr[6]; | |
296 | FIXME: should we set dr6 also ?? */ | |
297 | th->context.Dr7 = dr[7]; | |
298 | CHECK (SetThreadContext (th->h, &th->context)); | |
299 | th->context.ContextFlags = 0; | |
300 | } | |
c906108c SS |
301 | return th; |
302 | } | |
303 | ||
304 | /* Clear out any old thread list and reintialize it to a | |
305 | pristine state. */ | |
306 | static void | |
fba45db2 | 307 | child_init_thread_list (void) |
c906108c SS |
308 | { |
309 | thread_info *th = &thread_head; | |
310 | ||
311 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
312 | init_thread_list (); | |
313 | while (th->next != NULL) | |
314 | { | |
315 | thread_info *here = th->next; | |
316 | th->next = here->next; | |
317 | (void) CloseHandle (here->h); | |
b8c9b27d | 318 | xfree (here); |
c906108c SS |
319 | } |
320 | } | |
321 | ||
322 | /* Delete a thread from the list of threads */ | |
323 | static void | |
324 | child_delete_thread (DWORD id) | |
325 | { | |
326 | thread_info *th; | |
327 | ||
328 | if (info_verbose) | |
39f77062 KB |
329 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
330 | delete_thread (pid_to_ptid (id)); | |
c906108c SS |
331 | |
332 | for (th = &thread_head; | |
333 | th->next != NULL && th->next->id != id; | |
334 | th = th->next) | |
335 | continue; | |
336 | ||
337 | if (th->next != NULL) | |
338 | { | |
339 | thread_info *here = th->next; | |
340 | th->next = here->next; | |
341 | CloseHandle (here->h); | |
b8c9b27d | 342 | xfree (here); |
c906108c SS |
343 | } |
344 | } | |
345 | ||
c906108c SS |
346 | static void |
347 | do_child_fetch_inferior_registers (int r) | |
348 | { | |
c2d11a7d JM |
349 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
350 | long l; | |
351 | if (r == FCS_REGNUM) | |
352 | { | |
8e860359 | 353 | l = *((long *) context_offset) & 0xffff; |
c2d11a7d JM |
354 | supply_register (r, (char *) &l); |
355 | } | |
356 | else if (r == FOP_REGNUM) | |
357 | { | |
8e860359 | 358 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
c2d11a7d JM |
359 | supply_register (r, (char *) &l); |
360 | } | |
361 | else if (r >= 0) | |
ed9a39eb | 362 | supply_register (r, context_offset); |
c906108c SS |
363 | else |
364 | { | |
365 | for (r = 0; r < NUM_REGS; r++) | |
366 | do_child_fetch_inferior_registers (r); | |
367 | } | |
368 | } | |
369 | ||
370 | static void | |
371 | child_fetch_inferior_registers (int r) | |
372 | { | |
39f77062 | 373 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
374 | do_child_fetch_inferior_registers (r); |
375 | } | |
376 | ||
377 | static void | |
378 | do_child_store_inferior_registers (int r) | |
379 | { | |
380 | if (r >= 0) | |
381 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
382 | else | |
383 | { | |
384 | for (r = 0; r < NUM_REGS; r++) | |
385 | do_child_store_inferior_registers (r); | |
386 | } | |
387 | } | |
388 | ||
389 | /* Store a new register value into the current thread context */ | |
390 | static void | |
391 | child_store_inferior_registers (int r) | |
392 | { | |
39f77062 | 393 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
c906108c SS |
394 | do_child_store_inferior_registers (r); |
395 | } | |
396 | ||
c2d11a7d JM |
397 | static int psapi_loaded = 0; |
398 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
399 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
400 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
401 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
c2d11a7d | 402 | |
3bccec63 | 403 | int |
8e860359 | 404 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
c2d11a7d JM |
405 | { |
406 | DWORD len; | |
407 | MODULEINFO mi; | |
408 | int i; | |
8e860359 CF |
409 | HMODULE dh_buf[1]; |
410 | HMODULE *DllHandle = dh_buf; | |
c2d11a7d JM |
411 | DWORD cbNeeded; |
412 | BOOL ok; | |
413 | ||
414 | if (!psapi_loaded || | |
8e860359 CF |
415 | psapi_EnumProcessModules == NULL || |
416 | psapi_GetModuleInformation == NULL || | |
417 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d | 418 | { |
8e860359 CF |
419 | if (psapi_loaded) |
420 | goto failed; | |
c2d11a7d JM |
421 | psapi_loaded = 1; |
422 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
423 | if (!psapi_module_handle) | |
8e860359 CF |
424 | { |
425 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
426 | goto failed; | |
427 | } | |
428 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
c2d11a7d JM |
429 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
430 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
431 | "GetModuleFileNameExA"); |
432 | if (psapi_EnumProcessModules == NULL || | |
433 | psapi_GetModuleInformation == NULL || | |
434 | psapi_GetModuleFileNameExA == NULL) | |
c2d11a7d JM |
435 | goto failed; |
436 | } | |
437 | ||
438 | cbNeeded = 0; | |
439 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
440 | DllHandle, |
441 | sizeof (HMODULE), | |
442 | &cbNeeded); | |
c2d11a7d JM |
443 | |
444 | if (!ok || !cbNeeded) | |
445 | goto failed; | |
446 | ||
8e860359 | 447 | DllHandle = (HMODULE *) alloca (cbNeeded); |
c2d11a7d JM |
448 | if (!DllHandle) |
449 | goto failed; | |
450 | ||
451 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
452 | DllHandle, |
453 | cbNeeded, | |
454 | &cbNeeded); | |
c2d11a7d JM |
455 | if (!ok) |
456 | goto failed; | |
457 | ||
29fe111d | 458 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
c2d11a7d JM |
459 | { |
460 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
461 | DllHandle[i], |
462 | &mi, | |
463 | sizeof (mi))) | |
c2d11a7d JM |
464 | error ("Can't get module info"); |
465 | ||
466 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
467 | DllHandle[i], |
468 | dll_name_ret, | |
469 | MAX_PATH); | |
c2d11a7d | 470 | if (len == 0) |
29fe111d | 471 | error ("Error getting dll name: %u\n", GetLastError ()); |
c2d11a7d JM |
472 | |
473 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
474 | return 1; | |
475 | } | |
476 | ||
477 | failed: | |
478 | dll_name_ret[0] = '\0'; | |
479 | return 0; | |
480 | } | |
481 | ||
450005e7 CF |
482 | /* Encapsulate the information required in a call to |
483 | symbol_file_add_args */ | |
8a892701 CF |
484 | struct safe_symbol_file_add_args |
485 | { | |
486 | char *name; | |
487 | int from_tty; | |
488 | struct section_addr_info *addrs; | |
489 | int mainline; | |
490 | int flags; | |
7c5c87c0 | 491 | struct ui_file *err, *out; |
8a892701 CF |
492 | struct objfile *ret; |
493 | }; | |
494 | ||
02e423b9 CF |
495 | /* Maintain a linked list of "so" information. */ |
496 | struct so_stuff | |
497 | { | |
d3ff4a77 | 498 | struct so_stuff *next; |
02e423b9 | 499 | DWORD load_addr; |
7470a420 | 500 | int loaded; |
d3ff4a77 | 501 | struct objfile *objfile; |
7470a420 CF |
502 | char name[1]; |
503 | } solib_start, *solib_end; | |
02e423b9 | 504 | |
450005e7 CF |
505 | /* Call symbol_file_add with stderr redirected. We don't care if there |
506 | are errors. */ | |
8a892701 CF |
507 | static int |
508 | safe_symbol_file_add_stub (void *argv) | |
509 | { | |
510 | #define p ((struct safe_symbol_file_add_args *)argv) | |
fefd0a37 | 511 | struct so_stuff *so = &solib_start; |
02e423b9 CF |
512 | |
513 | while ((so = so->next)) | |
7470a420 | 514 | if (so->loaded && strcasecmp (so->name, p->name) == 0) |
02e423b9 | 515 | return 0; |
8a892701 CF |
516 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
517 | return !!p->ret; | |
518 | #undef p | |
519 | } | |
520 | ||
450005e7 | 521 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 522 | static void |
7c5c87c0 | 523 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 524 | { |
8e860359 | 525 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 526 | gdb_flush (gdb_stderr); |
7c5c87c0 | 527 | gdb_flush (gdb_stdout); |
d3ff4a77 | 528 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 529 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 530 | gdb_stderr = sp->err; |
9d3789f7 | 531 | gdb_stdout = sp->out; |
8e860359 | 532 | #undef sp |
8a892701 CF |
533 | } |
534 | ||
450005e7 | 535 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
536 | static struct objfile * |
537 | safe_symbol_file_add (char *name, int from_tty, | |
538 | struct section_addr_info *addrs, | |
539 | int mainline, int flags) | |
8a892701 CF |
540 | { |
541 | struct safe_symbol_file_add_args p; | |
542 | struct cleanup *cleanup; | |
543 | ||
7c5c87c0 | 544 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 545 | |
7c5c87c0 CF |
546 | p.err = gdb_stderr; |
547 | p.out = gdb_stdout; | |
450005e7 | 548 | gdb_flush (gdb_stderr); |
7c5c87c0 | 549 | gdb_flush (gdb_stdout); |
d3ff4a77 | 550 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 551 | gdb_stdout = ui_file_new (); |
8a892701 CF |
552 | p.name = name; |
553 | p.from_tty = from_tty; | |
554 | p.addrs = addrs; | |
555 | p.mainline = mainline; | |
556 | p.flags = flags; | |
557 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
558 | ||
559 | do_cleanups (cleanup); | |
560 | return p.ret; | |
561 | } | |
562 | ||
450005e7 CF |
563 | /* Remember the maximum DLL length for printing in info dll command. */ |
564 | int max_dll_name_len; | |
565 | ||
8e860359 CF |
566 | static void |
567 | register_loaded_dll (const char *name, DWORD load_addr) | |
568 | { | |
569 | struct so_stuff *so; | |
7470a420 | 570 | char ppath[MAX_PATH + 1]; |
3f8ad85b CF |
571 | char buf[MAX_PATH + 1]; |
572 | char cwd[MAX_PATH + 1]; | |
573 | char *p; | |
574 | WIN32_FIND_DATA w32_fd; | |
575 | HANDLE h = FindFirstFile(name, &w32_fd); | |
576 | size_t len; | |
577 | ||
578 | FindClose (h); | |
579 | strcpy (buf, name); | |
580 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
581 | { | |
582 | p = strrchr (buf, '\\'); | |
583 | if (p) | |
584 | p[1] = '\0'; | |
585 | SetCurrentDirectory (buf); | |
586 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
587 | SetCurrentDirectory (cwd); | |
588 | } | |
589 | ||
590 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
591 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
592 | so->loaded = 0; | |
8e860359 | 593 | so->load_addr = load_addr; |
d3ff4a77 CF |
594 | so->next = NULL; |
595 | so->objfile = NULL; | |
7470a420 | 596 | strcpy (so->name, ppath); |
8e860359 CF |
597 | |
598 | solib_end->next = so; | |
599 | solib_end = so; | |
3f8ad85b CF |
600 | len = strlen (ppath); |
601 | if (len > max_dll_name_len) | |
602 | max_dll_name_len = len; | |
8e860359 CF |
603 | } |
604 | ||
c906108c SS |
605 | /* Wait for child to do something. Return pid of child, or -1 in case |
606 | of error; store status through argument pointer OURSTATUS. */ | |
c906108c | 607 | static int |
0a65a603 | 608 | handle_load_dll (void *dummy) |
c906108c | 609 | { |
c5aa993b | 610 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
c906108c SS |
611 | DWORD dll_name_ptr; |
612 | DWORD done; | |
613 | char dll_buf[MAX_PATH + 1]; | |
450005e7 | 614 | char *dll_name = NULL; |
450005e7 | 615 | char *p; |
c906108c | 616 | |
c5aa993b | 617 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 618 | |
c2d11a7d | 619 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 620 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
c906108c | 621 | |
c2d11a7d | 622 | dll_name = dll_buf; |
c906108c SS |
623 | |
624 | /* Attempt to read the name of the dll that was detected. | |
625 | This is documented to work only when actively debugging | |
626 | a program. It will not work for attached processes. */ | |
627 | if (dll_name == NULL || *dll_name == '\0') | |
628 | { | |
29fe111d | 629 | DWORD size = event->fUnicode ? sizeof (WCHAR) : sizeof (char); |
c906108c SS |
630 | int len = 0; |
631 | char b[2]; | |
632 | ||
633 | ReadProcessMemory (current_process_handle, | |
634 | (LPCVOID) event->lpImageName, | |
635 | (char *) &dll_name_ptr, | |
636 | sizeof (dll_name_ptr), &done); | |
637 | ||
638 | /* See if we could read the address of a string, and that the | |
3bccec63 | 639 | address isn't null. */ |
c906108c SS |
640 | |
641 | if (done != sizeof (dll_name_ptr) || !dll_name_ptr) | |
642 | return 1; | |
643 | ||
644 | do | |
645 | { | |
646 | ReadProcessMemory (current_process_handle, | |
647 | (LPCVOID) (dll_name_ptr + len * size), | |
648 | &b, | |
649 | size, | |
650 | &done); | |
651 | len++; | |
652 | } | |
653 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
654 | ||
655 | dll_name = alloca (len); | |
656 | ||
657 | if (event->fUnicode) | |
658 | { | |
659 | WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
660 | ReadProcessMemory (current_process_handle, | |
661 | (LPCVOID) dll_name_ptr, | |
662 | unicode_dll_name, | |
663 | len * sizeof (WCHAR), | |
664 | &done); | |
665 | ||
666 | WideCharToMultiByte (CP_ACP, 0, | |
667 | unicode_dll_name, len, | |
668 | dll_name, len, 0, 0); | |
669 | } | |
670 | else | |
671 | { | |
672 | ReadProcessMemory (current_process_handle, | |
673 | (LPCVOID) dll_name_ptr, | |
674 | dll_name, | |
675 | len, | |
676 | &done); | |
677 | } | |
678 | } | |
679 | ||
680 | if (!dll_name) | |
681 | return 1; | |
682 | ||
8e860359 | 683 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
684 | |
685 | return 1; | |
686 | } | |
687 | ||
d3ff4a77 | 688 | static int |
0a65a603 | 689 | handle_unload_dll (void *dummy) |
d3ff4a77 CF |
690 | { |
691 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
692 | struct so_stuff *so; | |
693 | ||
694 | for (so = &solib_start; so->next != NULL; so = so->next) | |
695 | if (so->next->load_addr == lpBaseOfDll) | |
696 | { | |
697 | struct so_stuff *sodel = so->next; | |
698 | so->next = sodel->next; | |
699 | if (!so->next) | |
700 | solib_end = so; | |
701 | if (sodel->objfile) | |
702 | free_objfile (sodel->objfile); | |
703 | xfree(sodel); | |
704 | return 1; | |
705 | } | |
706 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
450005e7 CF |
711 | /* Return name of last loaded DLL. */ |
712 | char * | |
0a65a603 | 713 | child_solib_loaded_library_pathname (int pid) |
450005e7 | 714 | { |
8e860359 | 715 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
716 | } |
717 | ||
718 | /* Clear list of loaded DLLs. */ | |
719 | void | |
720 | child_clear_solibs (void) | |
721 | { | |
722 | struct so_stuff *so, *so1 = solib_start.next; | |
723 | ||
724 | while ((so = so1) != NULL) | |
725 | { | |
726 | so1 = so->next; | |
b8c9b27d | 727 | xfree (so); |
450005e7 CF |
728 | } |
729 | ||
730 | solib_start.next = NULL; | |
d3ff4a77 | 731 | solib_start.objfile = NULL; |
450005e7 CF |
732 | solib_end = &solib_start; |
733 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
734 | } | |
735 | ||
736 | /* Add DLL symbol information. */ | |
d3ff4a77 | 737 | static struct objfile * |
02e423b9 | 738 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 CF |
739 | { |
740 | struct section_addr_info section_addrs; | |
741 | ||
c906108c SS |
742 | /* The symbols in a dll are offset by 0x1000, which is the |
743 | the offset from 0 of the first byte in an image - because | |
8a892701 | 744 | of the file header and the section alignment. */ |
c906108c | 745 | |
8e860359 | 746 | if (!name || !name[0]) |
d3ff4a77 | 747 | return NULL; |
450005e7 CF |
748 | |
749 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 750 | section_addrs.other[0].name = ".text"; |
8e860359 | 751 | section_addrs.other[0].addr = load_addr; |
d3ff4a77 | 752 | return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED); |
450005e7 CF |
753 | } |
754 | ||
755 | /* Load DLL symbol info. */ | |
756 | void | |
7470a420 | 757 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 758 | { |
8e860359 | 759 | int n; |
450005e7 | 760 | dont_repeat (); |
8e860359 | 761 | |
450005e7 CF |
762 | if (args == NULL) |
763 | error ("dll-symbols requires a file name"); | |
764 | ||
8e860359 CF |
765 | n = strlen (args); |
766 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
767 | { | |
768 | char *newargs = (char *) alloca (n + 4 + 1); | |
769 | strcpy (newargs, args); | |
770 | strcat (newargs, ".dll"); | |
771 | args = newargs; | |
772 | } | |
773 | ||
7470a420 | 774 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 775 | } |
450005e7 CF |
776 | |
777 | /* List currently loaded DLLs. */ | |
778 | void | |
0a65a603 | 779 | info_dll_command (char *ignore, int from_tty) |
450005e7 CF |
780 | { |
781 | struct so_stuff *so = &solib_start; | |
782 | ||
783 | if (!so->next) | |
784 | return; | |
785 | ||
786 | printf ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); | |
787 | while ((so = so->next) != NULL) | |
7c5c87c0 | 788 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
789 | |
790 | return; | |
c906108c SS |
791 | } |
792 | ||
793 | /* Handle DEBUG_STRING output from child process. | |
794 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
795 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
796 | static int | |
797 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
798 | { | |
799 | char *s; | |
800 | int gotasig = FALSE; | |
801 | ||
802 | if (!target_read_string | |
c5aa993b | 803 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
c906108c SS |
804 | || !s || !*s) |
805 | return gotasig; | |
806 | ||
ed9a39eb | 807 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
c906108c | 808 | { |
ed9a39eb | 809 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 810 | warning ("%s", s); |
c906108c | 811 | } |
ed9a39eb | 812 | else |
c906108c SS |
813 | { |
814 | char *p; | |
c2d11a7d JM |
815 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
816 | gotasig = target_signal_from_host (sig); | |
7a292a7a SS |
817 | ourstatus->value.sig = gotasig; |
818 | if (gotasig) | |
c906108c SS |
819 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
820 | } | |
821 | ||
b8c9b27d | 822 | xfree (s); |
c906108c SS |
823 | return gotasig; |
824 | } | |
825 | ||
826 | static int | |
450005e7 | 827 | handle_exception (struct target_waitstatus *ourstatus) |
c906108c | 828 | { |
c906108c | 829 | thread_info *th; |
29fe111d | 830 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
c906108c | 831 | |
29fe111d | 832 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 833 | |
c906108c SS |
834 | /* Record the context of the current thread */ |
835 | th = thread_rec (current_event.dwThreadId, -1); | |
836 | ||
29fe111d | 837 | switch (code) |
c906108c SS |
838 | { |
839 | case EXCEPTION_ACCESS_VIOLATION: | |
29fe111d | 840 | DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n", |
8e860359 | 841 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 842 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
8a892701 | 843 | last_sig = SIGSEGV; |
c906108c | 844 | break; |
0d06e24b JM |
845 | case STATUS_FLOAT_UNDERFLOW: |
846 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
847 | case STATUS_FLOAT_OVERFLOW: | |
848 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
29fe111d | 849 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 850 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
0d06e24b | 851 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
29fe111d | 852 | last_sig = SIGFPE; |
0d06e24b | 853 | break; |
c906108c | 854 | case STATUS_STACK_OVERFLOW: |
29fe111d | 855 | DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n", |
8e860359 | 856 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
857 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
858 | break; | |
859 | case EXCEPTION_BREAKPOINT: | |
29fe111d | 860 | DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n", |
8e860359 | 861 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
862 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
863 | break; | |
864 | case DBG_CONTROL_C: | |
29fe111d | 865 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n", |
8e860359 | 866 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c | 867 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
868 | last_sig = SIGINT; /* FIXME - should check pass state */ |
869 | break; | |
870 | case DBG_CONTROL_BREAK: | |
871 | DEBUG_EXCEPT (("gdb: Target exception CONTROL_BREAK at 0x%08lx\n", | |
872 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); | |
873 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
8a892701 | 874 | last_sig = SIGINT; /* FIXME - should check pass state */ |
c906108c SS |
875 | break; |
876 | case EXCEPTION_SINGLE_STEP: | |
29fe111d | 877 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n", |
8e860359 | 878 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
c906108c SS |
879 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
880 | break; | |
8227c82d | 881 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
29fe111d | 882 | DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n", |
8e860359 | 883 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)); |
8227c82d | 884 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
8a892701 | 885 | last_sig = SIGILL; |
8227c82d | 886 | break; |
c906108c | 887 | default: |
02e423b9 CF |
888 | if (current_event.u.Exception.dwFirstChance) |
889 | return 0; | |
29fe111d | 890 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
c5aa993b | 891 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 892 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
c906108c SS |
893 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
894 | break; | |
895 | } | |
896 | exception_count++; | |
897 | return 1; | |
898 | } | |
899 | ||
900 | /* Resume all artificially suspended threads if we are continuing | |
901 | execution */ | |
902 | static BOOL | |
8a892701 | 903 | child_continue (DWORD continue_status, int id) |
c906108c SS |
904 | { |
905 | int i; | |
906 | thread_info *th; | |
907 | BOOL res; | |
908 | ||
29fe111d | 909 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n", |
c906108c | 910 | current_event.dwProcessId, current_event.dwThreadId)); |
7a292a7a SS |
911 | res = ContinueDebugEvent (current_event.dwProcessId, |
912 | current_event.dwThreadId, | |
913 | continue_status); | |
c2d11a7d | 914 | continue_status = 0; |
7a292a7a | 915 | if (res) |
c5aa993b | 916 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 917 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
c906108c | 918 | { |
fa4ba8da | 919 | |
c906108c SS |
920 | for (i = 0; i < th->suspend_count; i++) |
921 | (void) ResumeThread (th->h); | |
922 | th->suspend_count = 0; | |
fa4ba8da PM |
923 | if (debug_registers_changed) |
924 | { | |
925 | /* Only change the value of the debug reisters */ | |
926 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
927 | th->context.Dr0 = dr[0]; | |
928 | th->context.Dr1 = dr[1]; | |
929 | th->context.Dr2 = dr[2]; | |
930 | th->context.Dr3 = dr[3]; | |
931 | /* th->context.Dr6 = dr[6]; | |
932 | FIXME: should we set dr6 also ?? */ | |
933 | th->context.Dr7 = dr[7]; | |
934 | CHECK (SetThreadContext (th->h, &th->context)); | |
935 | th->context.ContextFlags = 0; | |
936 | } | |
c906108c SS |
937 | } |
938 | ||
fa4ba8da | 939 | debug_registers_changed = 0; |
c906108c SS |
940 | return res; |
941 | } | |
942 | ||
8a892701 CF |
943 | /* Get the next event from the child. Return 1 if the event requires |
944 | handling by WFI (or whatever). | |
945 | */ | |
c2d11a7d | 946 | static int |
0a65a603 | 947 | get_child_debug_event (int pid, struct target_waitstatus *ourstatus) |
c2d11a7d JM |
948 | { |
949 | BOOL debug_event; | |
8a892701 CF |
950 | DWORD continue_status, event_code; |
951 | thread_info *th = NULL; | |
952 | static thread_info dummy_thread_info; | |
450005e7 | 953 | int retval = 0; |
c2d11a7d | 954 | |
9d3789f7 CF |
955 | last_sig = 0; |
956 | ||
8a892701 | 957 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 958 | goto out; |
c2d11a7d JM |
959 | |
960 | event_count++; | |
961 | continue_status = DBG_CONTINUE; | |
c2d11a7d | 962 | |
8a892701 | 963 | event_code = current_event.dwDebugEventCode; |
450005e7 | 964 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
965 | |
966 | switch (event_code) | |
c2d11a7d JM |
967 | { |
968 | case CREATE_THREAD_DEBUG_EVENT: | |
969 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
970 | (unsigned) current_event.dwProcessId, |
971 | (unsigned) current_event.dwThreadId, | |
972 | "CREATE_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 973 | /* Record the existence of this thread */ |
8a892701 CF |
974 | th = child_add_thread (current_event.dwThreadId, |
975 | current_event.u.CreateThread.hThread); | |
c2d11a7d JM |
976 | if (info_verbose) |
977 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
978 | target_pid_to_str ( |
979 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 980 | retval = current_event.dwThreadId; |
c2d11a7d JM |
981 | break; |
982 | ||
983 | case EXIT_THREAD_DEBUG_EVENT: | |
984 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
985 | (unsigned) current_event.dwProcessId, |
986 | (unsigned) current_event.dwThreadId, | |
987 | "EXIT_THREAD_DEBUG_EVENT")); | |
c2d11a7d | 988 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 989 | th = &dummy_thread_info; |
c2d11a7d JM |
990 | break; |
991 | ||
992 | case CREATE_PROCESS_DEBUG_EVENT: | |
993 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
994 | (unsigned) current_event.dwProcessId, |
995 | (unsigned) current_event.dwThreadId, | |
996 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 997 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
c2d11a7d JM |
998 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
999 | ||
9d3789f7 | 1000 | main_thread_id = current_event.dwThreadId; |
c2d11a7d | 1001 | /* Add the main thread */ |
9d3789f7 | 1002 | #if 0 |
450005e7 CF |
1003 | th = child_add_thread (current_event.dwProcessId, |
1004 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
1005 | #endif |
1006 | th = child_add_thread (main_thread_id, | |
8a892701 | 1007 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 1008 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
c2d11a7d JM |
1009 | break; |
1010 | ||
1011 | case EXIT_PROCESS_DEBUG_EVENT: | |
1012 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1013 | (unsigned) current_event.dwProcessId, |
1014 | (unsigned) current_event.dwThreadId, | |
1015 | "EXIT_PROCESS_DEBUG_EVENT")); | |
c2d11a7d JM |
1016 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
1017 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1018 | CloseHandle (current_process_handle); | |
9d3789f7 | 1019 | retval = main_thread_id; |
8a892701 | 1020 | break; |
c2d11a7d JM |
1021 | |
1022 | case LOAD_DLL_DEBUG_EVENT: | |
1023 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1024 | (unsigned) current_event.dwProcessId, |
1025 | (unsigned) current_event.dwThreadId, | |
1026 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1027 | CloseHandle (current_event.u.LoadDll.hFile); |
8a892701 | 1028 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
c2d11a7d | 1029 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
1030 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1031 | ourstatus->value.integer = 0; | |
9d3789f7 | 1032 | retval = main_thread_id; |
c2d11a7d JM |
1033 | break; |
1034 | ||
1035 | case UNLOAD_DLL_DEBUG_EVENT: | |
1036 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1037 | (unsigned) current_event.dwProcessId, |
1038 | (unsigned) current_event.dwThreadId, | |
1039 | "UNLOAD_DLL_DEBUG_EVENT")); | |
d3ff4a77 CF |
1040 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
1041 | registers_changed (); /* mark all regs invalid */ | |
1042 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
3bccec63 | 1043 | does not exist yet. */ |
d3ff4a77 | 1044 | break; |
c2d11a7d JM |
1045 | |
1046 | case EXCEPTION_DEBUG_EVENT: | |
1047 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1048 | (unsigned) current_event.dwProcessId, |
1049 | (unsigned) current_event.dwThreadId, | |
1050 | "EXCEPTION_DEBUG_EVENT")); | |
02e423b9 CF |
1051 | if (handle_exception (ourstatus)) |
1052 | retval = current_event.dwThreadId; | |
c2d11a7d JM |
1053 | break; |
1054 | ||
8a892701 | 1055 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
c2d11a7d | 1056 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1057 | (unsigned) current_event.dwProcessId, |
1058 | (unsigned) current_event.dwThreadId, | |
1059 | "OUTPUT_DEBUG_STRING_EVENT")); | |
8e860359 | 1060 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 1061 | retval = main_thread_id; |
c2d11a7d | 1062 | break; |
9d3789f7 | 1063 | |
c2d11a7d | 1064 | default: |
29fe111d CF |
1065 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1066 | (DWORD) current_event.dwProcessId, | |
1067 | (DWORD) current_event.dwThreadId); | |
1068 | printf_unfiltered (" unknown event code %ld\n", | |
c2d11a7d JM |
1069 | current_event.dwDebugEventCode); |
1070 | break; | |
1071 | } | |
1072 | ||
450005e7 | 1073 | if (!retval) |
8a892701 | 1074 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 1075 | else |
9d3789f7 | 1076 | { |
8e860359 | 1077 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1078 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1079 | } |
c2d11a7d JM |
1080 | |
1081 | out: | |
450005e7 | 1082 | return retval; |
c2d11a7d JM |
1083 | } |
1084 | ||
c2d11a7d | 1085 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1086 | static ptid_t |
1087 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
c906108c | 1088 | { |
39f77062 KB |
1089 | int pid = PIDGET (ptid); |
1090 | ||
c906108c SS |
1091 | /* We loop when we get a non-standard exception rather than return |
1092 | with a SPURIOUS because resume can try and step or modify things, | |
1093 | which needs a current_thread->h. But some of these exceptions mark | |
1094 | the birth or death of threads, which mean that the current thread | |
1095 | isn't necessarily what you think it is. */ | |
1096 | ||
1097 | while (1) | |
450005e7 CF |
1098 | { |
1099 | int retval = get_child_debug_event (pid, ourstatus); | |
1100 | if (retval) | |
39f77062 | 1101 | return pid_to_ptid (retval); |
450005e7 CF |
1102 | else |
1103 | { | |
1104 | int detach = 0; | |
c906108c | 1105 | |
450005e7 CF |
1106 | if (ui_loop_hook != NULL) |
1107 | detach = ui_loop_hook (0); | |
7a292a7a | 1108 | |
450005e7 CF |
1109 | if (detach) |
1110 | child_kill_inferior (); | |
1111 | } | |
1112 | } | |
c906108c SS |
1113 | } |
1114 | ||
9d3789f7 CF |
1115 | static void |
1116 | do_initial_child_stuff (DWORD pid) | |
1117 | { | |
1118 | extern int stop_after_trap; | |
fa4ba8da | 1119 | int i; |
9d3789f7 CF |
1120 | |
1121 | last_sig = 0; | |
1122 | event_count = 0; | |
1123 | exception_count = 0; | |
fa4ba8da PM |
1124 | debug_registers_changed = 0; |
1125 | debug_registers_used = 0; | |
1126 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) | |
1127 | dr[i] = 0; | |
9d3789f7 CF |
1128 | current_event.dwProcessId = pid; |
1129 | memset (¤t_event, 0, sizeof (current_event)); | |
1130 | push_target (&child_ops); | |
1131 | child_init_thread_list (); | |
1132 | child_clear_solibs (); | |
1133 | clear_proceed_status (); | |
1134 | init_wait_for_inferior (); | |
1135 | ||
1136 | target_terminal_init (); | |
1137 | target_terminal_inferior (); | |
1138 | ||
1139 | while (1) | |
1140 | { | |
1141 | stop_after_trap = 1; | |
1142 | wait_for_inferior (); | |
1143 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1144 | resume (0, stop_signal); | |
1145 | else | |
1146 | break; | |
1147 | } | |
1148 | stop_after_trap = 0; | |
1149 | return; | |
1150 | } | |
1151 | ||
02cc9f49 CV |
1152 | /* Since Windows XP, detaching from a process is supported by Windows. |
1153 | The following code tries loading the appropriate functions dynamically. | |
1154 | If loading these functions succeeds use them to actually detach from | |
1155 | the inferior process, otherwise behave as usual, pretending that | |
1156 | detach has worked. */ | |
1157 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1158 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1159 | ||
1160 | static int | |
1161 | has_detach_ability () | |
1162 | { | |
1163 | static HMODULE kernel32 = NULL; | |
1164 | ||
1165 | if (!kernel32) | |
1166 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1167 | if (kernel32) | |
1168 | { | |
1169 | if (!DebugSetProcessKillOnExit) | |
1170 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1171 | "DebugSetProcessKillOnExit"); | |
1172 | if (!DebugActiveProcessStop) | |
1173 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1174 | "DebugActiveProcessStop"); | |
1175 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1176 | return 1; | |
1177 | } | |
1178 | return 0; | |
1179 | } | |
c906108c | 1180 | |
02cc9f49 | 1181 | /* Attach to process PID, then initialize for debugging it. */ |
c906108c | 1182 | static void |
fba45db2 | 1183 | child_attach (char *args, int from_tty) |
c906108c SS |
1184 | { |
1185 | BOOL ok; | |
559e75c0 | 1186 | DWORD pid; |
c906108c SS |
1187 | |
1188 | if (!args) | |
1189 | error_no_arg ("process-id to attach"); | |
1190 | ||
559e75c0 | 1191 | pid = strtoul (args, 0, 0); |
9d3789f7 | 1192 | ok = DebugActiveProcess (pid); |
c906108c SS |
1193 | |
1194 | if (!ok) | |
1195 | error ("Can't attach to process."); | |
1196 | ||
02cc9f49 CV |
1197 | if (has_detach_ability ()) |
1198 | { | |
1199 | attach_flag = 1; | |
1200 | DebugSetProcessKillOnExit (FALSE); | |
1201 | } | |
1202 | ||
c906108c SS |
1203 | if (from_tty) |
1204 | { | |
1205 | char *exec_file = (char *) get_exec_file (0); | |
1206 | ||
1207 | if (exec_file) | |
1208 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1209 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1210 | else |
1211 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1212 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
1213 | |
1214 | gdb_flush (gdb_stdout); | |
1215 | } | |
1216 | ||
9d3789f7 CF |
1217 | do_initial_child_stuff (pid); |
1218 | target_terminal_ours (); | |
c906108c SS |
1219 | } |
1220 | ||
1221 | static void | |
0a65a603 | 1222 | child_detach (char *args, int from_tty) |
c906108c | 1223 | { |
02cc9f49 CV |
1224 | int detached = 1; |
1225 | ||
1226 | if (has_detach_ability ()) | |
1227 | { | |
1228 | delete_command (NULL, 0); | |
1229 | child_continue (DBG_CONTINUE, -1); | |
1230 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
3bccec63 | 1231 | { |
02cc9f49 CV |
1232 | error ("Can't detach process %lu (error %lu)", |
1233 | current_event.dwProcessId, GetLastError ()); | |
1234 | detached = 0; | |
3bccec63 | 1235 | } |
02cc9f49 CV |
1236 | DebugSetProcessKillOnExit (FALSE); |
1237 | } | |
1238 | if (detached && from_tty) | |
c906108c SS |
1239 | { |
1240 | char *exec_file = get_exec_file (0); | |
1241 | if (exec_file == 0) | |
1242 | exec_file = ""; | |
02cc9f49 CV |
1243 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1244 | current_event.dwProcessId); | |
c906108c SS |
1245 | gdb_flush (gdb_stdout); |
1246 | } | |
39f77062 | 1247 | inferior_ptid = null_ptid; |
c906108c SS |
1248 | unpush_target (&child_ops); |
1249 | } | |
1250 | ||
1251 | /* Print status information about what we're accessing. */ | |
1252 | ||
1253 | static void | |
0a65a603 | 1254 | child_files_info (struct target_ops *ignore) |
c906108c SS |
1255 | { |
1256 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1257 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
1258 | } |
1259 | ||
1260 | /* ARGSUSED */ | |
1261 | static void | |
0a65a603 | 1262 | child_open (char *arg, int from_tty) |
c906108c SS |
1263 | { |
1264 | error ("Use the \"run\" command to start a Unix child process."); | |
1265 | } | |
1266 | ||
39f77062 | 1267 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
c906108c SS |
1268 | EXEC_FILE is the file to run. |
1269 | ALLARGS is a string containing the arguments to the program. | |
1270 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1271 | ||
1272 | static void | |
fba45db2 | 1273 | child_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c SS |
1274 | { |
1275 | char real_path[MAXPATHLEN]; | |
1276 | char *winenv; | |
1277 | char *temp; | |
c5aa993b | 1278 | int envlen; |
c906108c | 1279 | int i; |
c906108c SS |
1280 | STARTUPINFO si; |
1281 | PROCESS_INFORMATION pi; | |
c906108c SS |
1282 | BOOL ret; |
1283 | DWORD flags; | |
1284 | char *args; | |
1285 | ||
1286 | if (!exec_file) | |
450005e7 | 1287 | error ("No executable specified, use `target exec'.\n"); |
c906108c SS |
1288 | |
1289 | memset (&si, 0, sizeof (si)); | |
1290 | si.cb = sizeof (si); | |
1291 | ||
29fe111d | 1292 | cygwin_conv_to_win32_path (exec_file, real_path); |
c906108c SS |
1293 | |
1294 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1295 | ||
1296 | if (new_group) | |
1297 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1298 | ||
1299 | if (new_console) | |
1300 | flags |= CREATE_NEW_CONSOLE; | |
1301 | ||
1302 | args = alloca (strlen (real_path) + strlen (allargs) + 2); | |
1303 | ||
1304 | strcpy (args, real_path); | |
1305 | ||
1306 | strcat (args, " "); | |
1307 | strcat (args, allargs); | |
1308 | ||
1309 | /* Prepare the environment vars for CreateProcess. */ | |
1310 | { | |
1311 | /* This code use to assume all env vars were file names and would | |
1312 | translate them all to win32 style. That obviously doesn't work in the | |
1313 | general case. The current rule is that we only translate PATH. | |
1314 | We need to handle PATH because we're about to call CreateProcess and | |
1315 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1316 | in both posix and win32 environments. cygwin.dll will change it back | |
1317 | to posix style if necessary. */ | |
1318 | ||
1319 | static const char *conv_path_names[] = | |
c5aa993b JM |
1320 | { |
1321 | "PATH=", | |
1322 | 0 | |
1323 | }; | |
c906108c SS |
1324 | |
1325 | /* CreateProcess takes the environment list as a null terminated set of | |
1326 | strings (i.e. two nulls terminate the list). */ | |
1327 | ||
1328 | /* Get total size for env strings. */ | |
1329 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1330 | { | |
1331 | int j, len; | |
1332 | ||
1333 | for (j = 0; conv_path_names[j]; j++) | |
1334 | { | |
1335 | len = strlen (conv_path_names[j]); | |
1336 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1337 | { | |
29fe111d | 1338 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c | 1339 | envlen += len |
29fe111d | 1340 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
c906108c SS |
1341 | else |
1342 | envlen += strlen (env[i]) + 1; | |
1343 | break; | |
1344 | } | |
1345 | } | |
1346 | if (conv_path_names[j] == NULL) | |
1347 | envlen += strlen (env[i]) + 1; | |
1348 | } | |
1349 | ||
1350 | winenv = alloca (envlen + 1); | |
1351 | ||
1352 | /* Copy env strings into new buffer. */ | |
1353 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) | |
1354 | { | |
1355 | int j, len; | |
1356 | ||
1357 | for (j = 0; conv_path_names[j]; j++) | |
1358 | { | |
1359 | len = strlen (conv_path_names[j]); | |
1360 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
1361 | { | |
29fe111d | 1362 | if (cygwin_posix_path_list_p (env[i] + len)) |
c906108c SS |
1363 | { |
1364 | memcpy (temp, env[i], len); | |
29fe111d | 1365 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
c906108c SS |
1366 | } |
1367 | else | |
1368 | strcpy (temp, env[i]); | |
1369 | break; | |
1370 | } | |
1371 | } | |
1372 | if (conv_path_names[j] == NULL) | |
1373 | strcpy (temp, env[i]); | |
1374 | ||
1375 | temp += strlen (temp) + 1; | |
1376 | } | |
1377 | ||
1378 | /* Final nil string to terminate new env. */ | |
1379 | *temp = 0; | |
1380 | } | |
1381 | ||
1382 | ret = CreateProcess (0, | |
c5aa993b | 1383 | args, /* command line */ |
c906108c SS |
1384 | NULL, /* Security */ |
1385 | NULL, /* thread */ | |
1386 | TRUE, /* inherit handles */ | |
1387 | flags, /* start flags */ | |
1388 | winenv, | |
1389 | NULL, /* current directory */ | |
1390 | &si, | |
1391 | &pi); | |
1392 | if (!ret) | |
c5aa993b | 1393 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
c906108c | 1394 | |
700b351b CF |
1395 | CloseHandle (pi.hThread); |
1396 | CloseHandle (pi.hProcess); | |
9d3789f7 | 1397 | do_initial_child_stuff (pi.dwProcessId); |
ed9a39eb | 1398 | |
8e860359 | 1399 | /* child_continue (DBG_CONTINUE, -1); */ |
c2d11a7d | 1400 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
c906108c SS |
1401 | } |
1402 | ||
1403 | static void | |
fba45db2 | 1404 | child_mourn_inferior (void) |
c906108c | 1405 | { |
8a892701 | 1406 | (void) child_continue (DBG_CONTINUE, -1); |
fa4ba8da | 1407 | i386_cleanup_dregs(); |
c906108c SS |
1408 | unpush_target (&child_ops); |
1409 | generic_mourn_inferior (); | |
1410 | } | |
1411 | ||
1412 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
1413 | ^C on the controlling terminal. */ | |
1414 | ||
1415 | static void | |
fba45db2 | 1416 | child_stop (void) |
c906108c SS |
1417 | { |
1418 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); | |
c2d11a7d | 1419 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
c5aa993b | 1420 | registers_changed (); /* refresh register state */ |
c906108c SS |
1421 | } |
1422 | ||
1423 | int | |
1424 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
0a65a603 AC |
1425 | int write, struct mem_attrib *mem, |
1426 | struct target_ops *target) | |
c906108c SS |
1427 | { |
1428 | DWORD done; | |
1429 | if (write) | |
1430 | { | |
29fe111d CF |
1431 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1432 | len, (DWORD) memaddr)); | |
c906108c SS |
1433 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1434 | len, &done); | |
1435 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
1436 | } | |
1437 | else | |
1438 | { | |
29fe111d CF |
1439 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1440 | len, (DWORD) memaddr)); | |
c906108c SS |
1441 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1442 | &done); | |
1443 | } | |
1444 | return done; | |
1445 | } | |
1446 | ||
1447 | void | |
1448 | child_kill_inferior (void) | |
1449 | { | |
1450 | CHECK (TerminateProcess (current_process_handle, 0)); | |
1451 | ||
1452 | for (;;) | |
1453 | { | |
8a892701 | 1454 | if (!child_continue (DBG_CONTINUE, -1)) |
c906108c SS |
1455 | break; |
1456 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
1457 | break; | |
1458 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
1459 | break; | |
1460 | } | |
1461 | ||
1462 | CHECK (CloseHandle (current_process_handle)); | |
1463 | ||
1464 | /* this may fail in an attached process so don't check. */ | |
1465 | (void) CloseHandle (current_thread->h); | |
c5aa993b | 1466 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
c906108c SS |
1467 | } |
1468 | ||
1469 | void | |
39f77062 | 1470 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c | 1471 | { |
c906108c | 1472 | thread_info *th; |
8a892701 | 1473 | DWORD continue_status = last_sig > 0 && last_sig < NSIG ? |
8e860359 | 1474 | DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE; |
39f77062 | 1475 | int pid = PIDGET (ptid); |
8a892701 CF |
1476 | |
1477 | last_sig = 0; | |
c906108c SS |
1478 | |
1479 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", | |
1480 | pid, step, sig)); | |
1481 | ||
1482 | /* Get context for currently selected thread */ | |
1483 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1484 | if (th) |
c906108c | 1485 | { |
450005e7 CF |
1486 | if (step) |
1487 | { | |
1488 | /* Single step by setting t bit */ | |
1489 | child_fetch_inferior_registers (PS_REGNUM); | |
1490 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1491 | } | |
c906108c | 1492 | |
450005e7 CF |
1493 | if (th->context.ContextFlags) |
1494 | { | |
fa4ba8da PM |
1495 | if (debug_registers_changed) |
1496 | { | |
1497 | th->context.Dr0 = dr[0]; | |
1498 | th->context.Dr1 = dr[1]; | |
1499 | th->context.Dr2 = dr[2]; | |
1500 | th->context.Dr3 = dr[3]; | |
1501 | /* th->context.Dr6 = dr[6]; | |
1502 | FIXME: should we set dr6 also ?? */ | |
1503 | th->context.Dr7 = dr[7]; | |
1504 | } | |
450005e7 CF |
1505 | CHECK (SetThreadContext (th->h, &th->context)); |
1506 | th->context.ContextFlags = 0; | |
1507 | } | |
c906108c SS |
1508 | } |
1509 | ||
1510 | /* Allow continuing with the same signal that interrupted us. | |
1511 | Otherwise complain. */ | |
c906108c | 1512 | |
8a892701 | 1513 | child_continue (continue_status, pid); |
c906108c SS |
1514 | } |
1515 | ||
1516 | static void | |
fba45db2 | 1517 | child_prepare_to_store (void) |
c906108c SS |
1518 | { |
1519 | /* Do nothing, since we can store individual regs */ | |
1520 | } | |
1521 | ||
1522 | static int | |
fba45db2 | 1523 | child_can_run (void) |
c906108c SS |
1524 | { |
1525 | return 1; | |
1526 | } | |
1527 | ||
1528 | static void | |
0a65a603 | 1529 | child_close (int x) |
c906108c | 1530 | { |
39f77062 | 1531 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
3bccec63 | 1532 | PIDGET (inferior_ptid))); |
c906108c SS |
1533 | } |
1534 | ||
c5aa993b | 1535 | struct target_ops child_ops; |
c906108c | 1536 | |
c5aa993b JM |
1537 | static void |
1538 | init_child_ops (void) | |
c906108c | 1539 | { |
c5aa993b JM |
1540 | child_ops.to_shortname = "child"; |
1541 | child_ops.to_longname = "Win32 child process"; | |
1542 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1543 | child_ops.to_open = child_open; | |
1544 | child_ops.to_close = child_close; | |
1545 | child_ops.to_attach = child_attach; | |
1546 | child_ops.to_detach = child_detach; | |
1547 | child_ops.to_resume = child_resume; | |
1548 | child_ops.to_wait = child_wait; | |
1549 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1550 | child_ops.to_store_registers = child_store_inferior_registers; | |
1551 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1552 | child_ops.to_xfer_memory = child_xfer_memory; | |
1553 | child_ops.to_files_info = child_files_info; | |
1554 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1555 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1556 | child_ops.to_terminal_init = terminal_init_inferior; | |
1557 | child_ops.to_terminal_inferior = terminal_inferior; | |
1558 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1559 | child_ops.to_terminal_ours = terminal_ours; | |
1560 | child_ops.to_terminal_info = child_terminal_info; | |
1561 | child_ops.to_kill = child_kill_inferior; | |
1562 | child_ops.to_load = 0; | |
1563 | child_ops.to_lookup_symbol = 0; | |
1564 | child_ops.to_create_inferior = child_create_inferior; | |
1565 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1566 | child_ops.to_can_run = child_can_run; | |
1567 | child_ops.to_notice_signals = 0; | |
1568 | child_ops.to_thread_alive = win32_child_thread_alive; | |
ed9a39eb | 1569 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
c5aa993b JM |
1570 | child_ops.to_stop = child_stop; |
1571 | child_ops.to_stratum = process_stratum; | |
1572 | child_ops.DONT_USE = 0; | |
1573 | child_ops.to_has_all_memory = 1; | |
1574 | child_ops.to_has_memory = 1; | |
1575 | child_ops.to_has_stack = 1; | |
1576 | child_ops.to_has_registers = 1; | |
1577 | child_ops.to_has_execution = 1; | |
1578 | child_ops.to_sections = 0; | |
1579 | child_ops.to_sections_end = 0; | |
1580 | child_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
1581 | } |
1582 | ||
1583 | void | |
fba45db2 | 1584 | _initialize_inftarg (void) |
c906108c | 1585 | { |
fa58ee11 EZ |
1586 | struct cmd_list_element *c; |
1587 | ||
c5aa993b | 1588 | init_child_ops (); |
c906108c | 1589 | |
fa58ee11 EZ |
1590 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1591 | "Load dll library symbols from FILE."); | |
1592 | c->completer = filename_completer; | |
450005e7 CF |
1593 | |
1594 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
1595 | ||
1596 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, | |
8e860359 CF |
1597 | (char *) &new_console, |
1598 | "Set creation of new console when creating child process.", | |
1599 | &setlist), | |
1600 | &showlist); | |
c906108c | 1601 | |
450005e7 | 1602 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1603 | (char *) &new_group, |
1604 | "Set creation of new group when creating child process.", | |
1605 | &setlist), | |
1606 | &showlist); | |
c906108c | 1607 | |
450005e7 | 1608 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1609 | (char *) &debug_exec, |
1610 | "Set whether to display execution in child process.", | |
1611 | &setlist), | |
1612 | &showlist); | |
c906108c | 1613 | |
450005e7 | 1614 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1615 | (char *) &debug_events, |
1616 | "Set whether to display kernel events in child process.", | |
1617 | &setlist), | |
1618 | &showlist); | |
c906108c | 1619 | |
450005e7 | 1620 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1621 | (char *) &debug_memory, |
1622 | "Set whether to display memory accesses in child process.", | |
1623 | &setlist), | |
1624 | &showlist); | |
c906108c | 1625 | |
450005e7 | 1626 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1627 | (char *) &debug_exceptions, |
1628 | "Set whether to display kernel exceptions in child process.", | |
1629 | &setlist), | |
1630 | &showlist); | |
c906108c | 1631 | |
450005e7 CF |
1632 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1633 | add_info_alias ("sharedlibrary", "dll", 1); | |
1634 | ||
c906108c SS |
1635 | add_target (&child_ops); |
1636 | } | |
1637 | ||
fa4ba8da PM |
1638 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
1639 | ||
1640 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
1641 | Here we just store the address in dr array, the registers will be | |
1642 | actually set up when child_continue is called. */ | |
1643 | void | |
1644 | cygwin_set_dr (int i, CORE_ADDR addr) | |
1645 | { | |
1646 | if (i < 0 || i > 3) | |
1647 | internal_error (__FILE__, __LINE__, | |
1648 | "Invalid register %d in cygwin_set_dr.\n", i); | |
1649 | dr[i] = (unsigned) addr; | |
1650 | debug_registers_changed = 1; | |
1651 | debug_registers_used = 1; | |
1652 | } | |
1653 | ||
1654 | /* Pass the value VAL to the inferior in the DR7 debug control | |
1655 | register. Here we just store the address in D_REGS, the watchpoint | |
1656 | will be actually set up in child_wait. */ | |
1657 | void | |
1658 | cygwin_set_dr7 (unsigned val) | |
1659 | { | |
1660 | dr[7] = val; | |
1661 | debug_registers_changed = 1; | |
1662 | debug_registers_used = 1; | |
1663 | } | |
1664 | ||
1665 | /* Get the value of the DR6 debug status register from the inferior. | |
1666 | Here we just return the value stored in dr[6] | |
1667 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
1668 | unsigned | |
1669 | cygwin_get_dr6 (void) | |
1670 | { | |
1671 | return dr[6]; | |
1672 | } | |
1673 | ||
1674 | ||
c906108c SS |
1675 | /* Determine if the thread referenced by "pid" is alive |
1676 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1677 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1678 | static int | |
39f77062 | 1679 | win32_child_thread_alive (ptid_t ptid) |
c906108c | 1680 | { |
39f77062 KB |
1681 | int pid = PIDGET (ptid); |
1682 | ||
c5aa993b JM |
1683 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1684 | FALSE : TRUE; | |
c906108c SS |
1685 | } |
1686 | ||
1687 | /* Convert pid to printable format. */ | |
1688 | char * | |
39f77062 | 1689 | cygwin_pid_to_str (ptid_t ptid) |
c906108c SS |
1690 | { |
1691 | static char buf[80]; | |
39f77062 KB |
1692 | int pid = PIDGET (ptid); |
1693 | ||
29fe111d | 1694 | if ((DWORD) pid == current_event.dwProcessId) |
c906108c SS |
1695 | sprintf (buf, "process %d", pid); |
1696 | else | |
29fe111d | 1697 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
c906108c SS |
1698 | return buf; |
1699 | } | |
8e860359 CF |
1700 | |
1701 | static int | |
1702 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1703 | { | |
1704 | struct objfile *objfile; | |
1705 | char *objfile_basename; | |
1706 | const char *dll_basename; | |
1707 | ||
1708 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1709 | dll_basename = dll_name; | |
1710 | else | |
1711 | dll_basename++; | |
1712 | ||
1713 | ALL_OBJFILES (objfile) | |
1714 | { | |
1715 | objfile_basename = strrchr (objfile->name, '/'); | |
1716 | ||
1717 | if (objfile_basename && | |
1718 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1719 | { | |
1720 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1721 | base_addr, dll_name); | |
1722 | goto out; | |
1723 | } | |
1724 | } | |
1725 | ||
1726 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 1727 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
1728 | |
1729 | out: | |
1730 | return 1; | |
1731 | } | |
1732 | ||
1733 | typedef struct | |
1734 | { | |
1735 | struct target_ops *target; | |
1736 | bfd_vma addr; | |
1737 | } | |
1738 | map_code_section_args; | |
1739 | ||
1740 | static void | |
554cb486 | 1741 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1742 | { |
1743 | int old; | |
1744 | int update_coreops; | |
1745 | struct section_table *new_target_sect_ptr; | |
1746 | ||
1747 | map_code_section_args *args = (map_code_section_args *) obj; | |
1748 | struct target_ops *target = args->target; | |
1749 | if (sect->flags & SEC_CODE) | |
1750 | { | |
1751 | update_coreops = core_ops.to_sections == target->to_sections; | |
1752 | ||
1753 | if (target->to_sections) | |
1754 | { | |
1755 | old = target->to_sections_end - target->to_sections; | |
1756 | target->to_sections = (struct section_table *) | |
1757 | xrealloc ((char *) target->to_sections, | |
1758 | (sizeof (struct section_table)) * (1 + old)); | |
1759 | } | |
1760 | else | |
1761 | { | |
1762 | old = 0; | |
1763 | target->to_sections = (struct section_table *) | |
1764 | xmalloc ((sizeof (struct section_table))); | |
1765 | } | |
1766 | target->to_sections_end = target->to_sections + (1 + old); | |
1767 | ||
1768 | /* Update the to_sections field in the core_ops structure | |
3bccec63 | 1769 | if needed. */ |
8e860359 CF |
1770 | if (update_coreops) |
1771 | { | |
1772 | core_ops.to_sections = target->to_sections; | |
1773 | core_ops.to_sections_end = target->to_sections_end; | |
1774 | } | |
1775 | new_target_sect_ptr = target->to_sections + old; | |
1776 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
1777 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
1778 | bfd_section_size (abfd, sect);; | |
1779 | new_target_sect_ptr->the_bfd_section = sect; | |
1780 | new_target_sect_ptr->bfd = abfd; | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | static int | |
1785 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
1786 | { | |
1787 | bfd *dll_bfd; | |
1788 | map_code_section_args map_args; | |
1789 | asection *lowest_sect; | |
1790 | char *name; | |
1791 | if (dll_name == NULL || target == NULL) | |
1792 | return 0; | |
66ed1d85 | 1793 | name = xstrdup (dll_name); |
8e860359 CF |
1794 | dll_bfd = bfd_openr (name, "pei-i386"); |
1795 | if (dll_bfd == NULL) | |
1796 | return 0; | |
1797 | ||
1798 | if (bfd_check_format (dll_bfd, bfd_object)) | |
1799 | { | |
1800 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
1801 | if (lowest_sect == NULL) | |
1802 | return 0; | |
1803 | map_args.target = target; | |
1804 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
1805 | ||
554cb486 | 1806 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
1807 | } |
1808 | ||
1809 | return 1; | |
1810 | } | |
1811 | ||
1812 | static void | |
554cb486 | 1813 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
1814 | { |
1815 | struct target_ops *target = (struct target_ops *) obj; | |
1816 | ||
1817 | DWORD base_addr; | |
1818 | ||
1819 | int dll_name_size; | |
1820 | char *dll_name = NULL; | |
1821 | char *buf = NULL; | |
1822 | struct win32_pstatus *pstatus; | |
1823 | char *p; | |
1824 | ||
1825 | if (strncmp (sect->name, ".module", 7)) | |
1826 | return; | |
1827 | ||
1828 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
1829 | if (!buf) | |
1830 | { | |
1831 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1832 | goto out; | |
1833 | } | |
1834 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
1835 | goto out; | |
1836 | ||
1837 | pstatus = (struct win32_pstatus *) buf; | |
1838 | ||
1839 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
1840 | dll_name_size = pstatus->data.module_info.module_name_size; | |
1841 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
1842 | goto out; | |
1843 | ||
1844 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
1845 | if (!dll_name) | |
1846 | { | |
1847 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
1848 | goto out; | |
1849 | } | |
1850 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
1851 | ||
1852 | while ((p = strchr (dll_name, '\\'))) | |
1853 | *p = '/'; | |
1854 | ||
1855 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
1856 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
1857 | ||
1858 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
1859 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
1860 | ||
1861 | out: | |
1862 | if (buf) | |
b8c9b27d | 1863 | xfree (buf); |
8e860359 | 1864 | if (dll_name) |
b8c9b27d | 1865 | xfree (dll_name); |
8e860359 CF |
1866 | return; |
1867 | } | |
1868 | ||
1869 | void | |
0a65a603 AC |
1870 | child_solib_add (char *filename, int from_tty, struct target_ops *target, |
1871 | int readsyms) | |
8e860359 | 1872 | { |
990f9fe3 FF |
1873 | if (!readsyms) |
1874 | return; | |
8e860359 CF |
1875 | if (core_bfd) |
1876 | { | |
1877 | child_clear_solibs (); | |
1878 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
1879 | } | |
1880 | else | |
1881 | { | |
1882 | if (solib_end && solib_end->name) | |
d3ff4a77 | 1883 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
3bccec63 | 1884 | solib_end->load_addr); |
8e860359 CF |
1885 | } |
1886 | } | |
1887 | ||
1888 | static void | |
1889 | fetch_elf_core_registers (char *core_reg_sect, | |
1890 | unsigned core_reg_size, | |
1891 | int which, | |
1892 | CORE_ADDR reg_addr) | |
1893 | { | |
1894 | int r; | |
1895 | if (core_reg_size < sizeof (CONTEXT)) | |
1896 | { | |
1897 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
1898 | return; | |
1899 | } | |
1900 | for (r = 0; r < NUM_REGS; r++) | |
1901 | supply_register (r, core_reg_sect + mappings[r]); | |
1902 | } | |
1903 | ||
1904 | static struct core_fns win32_elf_core_fns = | |
1905 | { | |
1906 | bfd_target_elf_flavour, | |
1907 | default_check_format, | |
1908 | default_core_sniffer, | |
1909 | fetch_elf_core_registers, | |
1910 | NULL | |
1911 | }; | |
1912 | ||
1913 | void | |
0613c401 | 1914 | _initialize_core_win32 (void) |
8e860359 CF |
1915 | { |
1916 | add_core_fns (&win32_elf_core_fns); | |
1917 | } | |
2a3d5645 CF |
1918 | |
1919 | void | |
1920 | _initialize_check_for_gdb_ini (void) | |
1921 | { | |
1922 | char *homedir; | |
1923 | if (inhibit_gdbinit) | |
1924 | return; | |
1925 | ||
1926 | homedir = getenv ("HOME"); | |
1927 | if (homedir) | |
1928 | { | |
1929 | char *p; | |
1930 | char *oldini = (char *) alloca (strlen (homedir) + | |
1931 | sizeof ("/gdb.ini")); | |
1932 | strcpy (oldini, homedir); | |
1933 | p = strchr (oldini, '\0'); | |
1934 | if (p > oldini && p[-1] != '/') | |
1935 | *p++ = '/'; | |
1936 | strcpy (p, "gdb.ini"); | |
1937 | if (access (oldini, 0) == 0) | |
1938 | { | |
1939 | int len = strlen (oldini); | |
1940 | char *newini = alloca (len + 1); | |
1941 | sprintf (newini, "%.*s.gdbinit", len - (sizeof ("gdb.ini") - 1), oldini); | |
1942 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); | |
1943 | } | |
1944 | } | |
1945 | } |