Commit | Line | Data |
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24e60978 | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
0a65a603 | 2 | |
1bac305b | 3 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free |
0a65a603 AC |
4 | Software Foundation, Inc. |
5 | ||
e6433c28 | 6 | Contributed by Cygnus Solutions, A Red Hat Company. |
e88c49c3 | 7 | |
24e60978 SC |
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 | |
3a4b77d8 | 22 | Foundation, Inc., 59 Temple Place - Suite 330, |
4e052eda | 23 | Boston, MA 02111-1307, USA. */ |
24e60978 | 24 | |
dfe7f3ac | 25 | /* Originally by Steve Chamberlain, sac@cygnus.com */ |
24e60978 | 26 | |
3cee93ac | 27 | /* We assume we're being built with and will be used for cygwin. */ |
e88c49c3 | 28 | |
24e60978 SC |
29 | #include "defs.h" |
30 | #include "frame.h" /* required by inferior.h */ | |
31 | #include "inferior.h" | |
32 | #include "target.h" | |
24e60978 SC |
33 | #include "gdbcore.h" |
34 | #include "command.h" | |
fa58ee11 | 35 | #include "completer.h" |
4e052eda | 36 | #include "regcache.h" |
2a3d5645 | 37 | #include "top.h" |
c25b74ac | 38 | #include "i386-tdep.h" |
403d9909 CF |
39 | #include <signal.h> |
40 | #include <sys/types.h> | |
41 | #include <fcntl.h> | |
42 | #include <stdlib.h> | |
43 | #include <windows.h> | |
44 | #include <imagehlp.h> | |
45 | #include <sys/cygwin.h> | |
cad9cd60 | 46 | |
24e60978 | 47 | #include "buildsym.h" |
1ef980b9 SC |
48 | #include "symfile.h" |
49 | #include "objfiles.h" | |
24e60978 | 50 | #include "gdb_string.h" |
fdfa3315 | 51 | #include "gdbthread.h" |
24e60978 | 52 | #include "gdbcmd.h" |
1750a5ef | 53 | #include <sys/param.h> |
1e37c281 | 54 | #include <unistd.h> |
24e60978 | 55 | |
0714f9bf | 56 | /* The ui's event loop. */ |
507f3c78 | 57 | extern int (*ui_loop_hook) (int signo); |
0714f9bf SS |
58 | |
59 | /* If we're not using the old Cygwin header file set, define the | |
60 | following which never should have been in the generic Win32 API | |
61 | headers in the first place since they were our own invention... */ | |
62 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 63 | enum |
8e860359 CF |
64 | { |
65 | FLAG_TRACE_BIT = 0x100, | |
66 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
67 | }; | |
0714f9bf | 68 | #endif |
8e860359 CF |
69 | #include <sys/procfs.h> |
70 | #include <psapi.h> | |
0714f9bf | 71 | |
fa4ba8da PM |
72 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
73 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 74 | |
fa4ba8da PM |
75 | static unsigned dr[8]; |
76 | static int debug_registers_changed = 0; | |
77 | static int debug_registers_used = 0; | |
97da3b20 | 78 | |
3cee93ac CF |
79 | /* The string sent by cygwin when it processes a signal. |
80 | FIXME: This should be in a cygwin include file. */ | |
81 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
82 | ||
29fe111d | 83 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 84 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
85 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
86 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
87 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 SC |
88 | |
89 | /* Forward declaration */ | |
90 | extern struct target_ops child_ops; | |
91 | ||
a14ed312 | 92 | static void child_stop (void); |
39f77062 | 93 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 94 | void child_kill_inferior (void); |
3cee93ac | 95 | |
7393af7c PM |
96 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
97 | /* Set if a signal was received from the debugged process */ | |
98 | ||
3cee93ac CF |
99 | /* Thread information structure used to track information that is |
100 | not available in gdb's thread structure. */ | |
101 | typedef struct thread_info_struct | |
3a4b77d8 JM |
102 | { |
103 | struct thread_info_struct *next; | |
104 | DWORD id; | |
105 | HANDLE h; | |
106 | char *name; | |
107 | int suspend_count; | |
108 | CONTEXT context; | |
1e37c281 | 109 | STACKFRAME sf; |
8e860359 CF |
110 | } |
111 | thread_info; | |
1e37c281 | 112 | |
29fe111d | 113 | static thread_info thread_head; |
24e60978 | 114 | |
24e60978 SC |
115 | /* The process and thread handles for the above context. */ |
116 | ||
3cee93ac CF |
117 | static DEBUG_EVENT current_event; /* The current debug event from |
118 | WaitForDebugEvent */ | |
119 | static HANDLE current_process_handle; /* Currently executing process */ | |
120 | static thread_info *current_thread; /* Info on currently selected thread */ | |
349b409f | 121 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
122 | |
123 | /* Counts of things. */ | |
124 | static int exception_count = 0; | |
125 | static int event_count = 0; | |
dfe7f3ac | 126 | static int saw_create; |
24e60978 SC |
127 | |
128 | /* User options. */ | |
129 | static int new_console = 0; | |
1e37c281 | 130 | static int new_group = 1; |
dfe7f3ac CF |
131 | static int debug_exec = 0; /* show execution */ |
132 | static int debug_events = 0; /* show events from kernel */ | |
133 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 134 | static int debug_exceptions = 0; /* show target exceptions */ |
dfe7f3ac CF |
135 | static int useshell = 0; /* use shell for subprocesses */ |
136 | ||
24e60978 | 137 | /* This vector maps GDB's idea of a register's number into an address |
3cee93ac | 138 | in the win32 exception context vector. |
24e60978 | 139 | |
3cee93ac | 140 | It also contains the bit mask needed to load the register in question. |
24e60978 SC |
141 | |
142 | One day we could read a reg, we could inspect the context we | |
143 | already have loaded, if it doesn't have the bit set that we need, | |
144 | we read that set of registers in using GetThreadContext. If the | |
145 | context already contains what we need, we just unpack it. Then to | |
146 | write a register, first we have to ensure that the context contains | |
147 | the other regs of the group, and then we copy the info in and set | |
148 | out bit. */ | |
149 | ||
3cee93ac CF |
150 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) |
151 | static const int mappings[] = | |
24e60978 | 152 | { |
3a4b77d8 JM |
153 | context_offset (Eax), |
154 | context_offset (Ecx), | |
155 | context_offset (Edx), | |
156 | context_offset (Ebx), | |
157 | context_offset (Esp), | |
158 | context_offset (Ebp), | |
159 | context_offset (Esi), | |
160 | context_offset (Edi), | |
161 | context_offset (Eip), | |
162 | context_offset (EFlags), | |
163 | context_offset (SegCs), | |
164 | context_offset (SegSs), | |
165 | context_offset (SegDs), | |
166 | context_offset (SegEs), | |
167 | context_offset (SegFs), | |
168 | context_offset (SegGs), | |
169 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
170 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
171 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
172 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
173 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
174 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
175 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
176 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
1e37c281 JM |
177 | context_offset (FloatSave.ControlWord), |
178 | context_offset (FloatSave.StatusWord), | |
179 | context_offset (FloatSave.TagWord), | |
180 | context_offset (FloatSave.ErrorSelector), | |
181 | context_offset (FloatSave.ErrorOffset), | |
182 | context_offset (FloatSave.DataSelector), | |
183 | context_offset (FloatSave.DataOffset), | |
d3a09475 | 184 | context_offset (FloatSave.ErrorSelector) |
97da3b20 CF |
185 | #ifdef HAVE_SSE_REGS |
186 | /* XMM0-7 */ , | |
441532d7 PM |
187 | context_offset (ExtendedRegisters[10*16]), |
188 | context_offset (ExtendedRegisters[11*16]), | |
189 | context_offset (ExtendedRegisters[12*16]), | |
190 | context_offset (ExtendedRegisters[13*16]), | |
191 | context_offset (ExtendedRegisters[14*16]), | |
192 | context_offset (ExtendedRegisters[15*16]), | |
193 | context_offset (ExtendedRegisters[16*16]), | |
194 | context_offset (ExtendedRegisters[17*16]), | |
195 | /* MXCSR */ | |
196 | context_offset (ExtendedRegisters[24]) | |
97da3b20 | 197 | #endif |
24e60978 SC |
198 | }; |
199 | ||
d3a09475 JM |
200 | #undef context_offset |
201 | ||
24e60978 SC |
202 | /* This vector maps the target's idea of an exception (extracted |
203 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
204 | ||
205 | struct xlate_exception | |
206 | { | |
207 | int them; | |
208 | enum target_signal us; | |
209 | }; | |
210 | ||
24e60978 SC |
211 | static const struct xlate_exception |
212 | xlate[] = | |
213 | { | |
214 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 215 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
216 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
217 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
218 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
7393af7c | 219 | {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE}, |
24e60978 SC |
220 | {-1, -1}}; |
221 | ||
fa4ba8da PM |
222 | static void |
223 | check (BOOL ok, const char *file, int line) | |
224 | { | |
225 | if (!ok) | |
dfe7f3ac | 226 | printf_filtered ("error return %s:%d was %lu\n", file, line, |
fa4ba8da PM |
227 | GetLastError ()); |
228 | } | |
229 | ||
230 | ||
3cee93ac CF |
231 | /* Find a thread record given a thread id. |
232 | If get_context then also retrieve the context for this | |
233 | thread. */ | |
234 | static thread_info * | |
235 | thread_rec (DWORD id, int get_context) | |
24e60978 | 236 | { |
3cee93ac CF |
237 | thread_info *th; |
238 | ||
3a4b77d8 | 239 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
240 | if (th->id == id) |
241 | { | |
242 | if (!th->suspend_count && get_context) | |
243 | { | |
8a892701 | 244 | if (get_context > 0 && id != current_event.dwThreadId) |
3cee93ac CF |
245 | th->suspend_count = SuspendThread (th->h) + 1; |
246 | else if (get_context < 0) | |
247 | th->suspend_count = -1; | |
248 | ||
97da3b20 | 249 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
3cee93ac | 250 | GetThreadContext (th->h, &th->context); |
fa4ba8da PM |
251 | if (id == current_event.dwThreadId) |
252 | { | |
253 | /* Copy dr values from that thread. */ | |
254 | dr[0] = th->context.Dr0; | |
255 | dr[1] = th->context.Dr1; | |
256 | dr[2] = th->context.Dr2; | |
257 | dr[3] = th->context.Dr3; | |
258 | dr[6] = th->context.Dr6; | |
259 | dr[7] = th->context.Dr7; | |
260 | } | |
3cee93ac CF |
261 | } |
262 | return th; | |
263 | } | |
264 | ||
265 | return NULL; | |
266 | } | |
267 | ||
268 | /* Add a thread to the thread list */ | |
269 | static thread_info * | |
3a4b77d8 | 270 | child_add_thread (DWORD id, HANDLE h) |
3cee93ac CF |
271 | { |
272 | thread_info *th; | |
273 | ||
274 | if ((th = thread_rec (id, FALSE))) | |
275 | return th; | |
276 | ||
277 | th = (thread_info *) xmalloc (sizeof (*th)); | |
3a4b77d8 | 278 | memset (th, 0, sizeof (*th)); |
3cee93ac CF |
279 | th->id = id; |
280 | th->h = h; | |
281 | th->next = thread_head.next; | |
282 | thread_head.next = th; | |
39f77062 | 283 | add_thread (pid_to_ptid (id)); |
dfe7f3ac | 284 | /* Set the debug registers for the new thread in they are used. */ |
fa4ba8da PM |
285 | if (debug_registers_used) |
286 | { | |
287 | /* Only change the value of the debug registers. */ | |
288 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
289 | CHECK (GetThreadContext (th->h, &th->context)); | |
290 | th->context.Dr0 = dr[0]; | |
291 | th->context.Dr1 = dr[1]; | |
292 | th->context.Dr2 = dr[2]; | |
293 | th->context.Dr3 = dr[3]; | |
294 | /* th->context.Dr6 = dr[6]; | |
295 | FIXME: should we set dr6 also ?? */ | |
296 | th->context.Dr7 = dr[7]; | |
297 | CHECK (SetThreadContext (th->h, &th->context)); | |
298 | th->context.ContextFlags = 0; | |
299 | } | |
3cee93ac | 300 | return th; |
24e60978 SC |
301 | } |
302 | ||
3cee93ac CF |
303 | /* Clear out any old thread list and reintialize it to a |
304 | pristine state. */ | |
24e60978 | 305 | static void |
fba45db2 | 306 | child_init_thread_list (void) |
24e60978 | 307 | { |
3cee93ac CF |
308 | thread_info *th = &thread_head; |
309 | ||
310 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
311 | init_thread_list (); | |
312 | while (th->next != NULL) | |
24e60978 | 313 | { |
3cee93ac CF |
314 | thread_info *here = th->next; |
315 | th->next = here->next; | |
316 | (void) CloseHandle (here->h); | |
b8c9b27d | 317 | xfree (here); |
24e60978 | 318 | } |
3cee93ac CF |
319 | } |
320 | ||
321 | /* Delete a thread from the list of threads */ | |
322 | static void | |
323 | child_delete_thread (DWORD id) | |
324 | { | |
325 | thread_info *th; | |
326 | ||
327 | if (info_verbose) | |
39f77062 KB |
328 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
329 | delete_thread (pid_to_ptid (id)); | |
3cee93ac CF |
330 | |
331 | for (th = &thread_head; | |
332 | th->next != NULL && th->next->id != id; | |
333 | th = th->next) | |
334 | continue; | |
335 | ||
336 | if (th->next != NULL) | |
24e60978 | 337 | { |
3cee93ac CF |
338 | thread_info *here = th->next; |
339 | th->next = here->next; | |
340 | CloseHandle (here->h); | |
b8c9b27d | 341 | xfree (here); |
24e60978 SC |
342 | } |
343 | } | |
344 | ||
3cee93ac CF |
345 | static void |
346 | do_child_fetch_inferior_registers (int r) | |
24e60978 | 347 | { |
1e37c281 JM |
348 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
349 | long l; | |
350 | if (r == FCS_REGNUM) | |
351 | { | |
8e860359 | 352 | l = *((long *) context_offset) & 0xffff; |
1e37c281 JM |
353 | supply_register (r, (char *) &l); |
354 | } | |
355 | else if (r == FOP_REGNUM) | |
356 | { | |
8e860359 | 357 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
1e37c281 JM |
358 | supply_register (r, (char *) &l); |
359 | } | |
360 | else if (r >= 0) | |
d3a09475 | 361 | supply_register (r, context_offset); |
3cee93ac | 362 | else |
24e60978 SC |
363 | { |
364 | for (r = 0; r < NUM_REGS; r++) | |
3cee93ac | 365 | do_child_fetch_inferior_registers (r); |
24e60978 | 366 | } |
3cee93ac CF |
367 | } |
368 | ||
369 | static void | |
370 | child_fetch_inferior_registers (int r) | |
371 | { | |
39f77062 | 372 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
3cee93ac CF |
373 | do_child_fetch_inferior_registers (r); |
374 | } | |
375 | ||
376 | static void | |
377 | do_child_store_inferior_registers (int r) | |
378 | { | |
379 | if (r >= 0) | |
baa93fa6 | 380 | regcache_collect (r, ((char *) ¤t_thread->context) + mappings[r]); |
24e60978 SC |
381 | else |
382 | { | |
3cee93ac CF |
383 | for (r = 0; r < NUM_REGS; r++) |
384 | do_child_store_inferior_registers (r); | |
24e60978 SC |
385 | } |
386 | } | |
387 | ||
3cee93ac CF |
388 | /* Store a new register value into the current thread context */ |
389 | static void | |
390 | child_store_inferior_registers (int r) | |
391 | { | |
39f77062 | 392 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
3cee93ac CF |
393 | do_child_store_inferior_registers (r); |
394 | } | |
24e60978 | 395 | |
1e37c281 JM |
396 | static int psapi_loaded = 0; |
397 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
398 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
399 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
400 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
1e37c281 | 401 | |
3bccec63 | 402 | int |
8e860359 | 403 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
1e37c281 JM |
404 | { |
405 | DWORD len; | |
406 | MODULEINFO mi; | |
407 | int i; | |
8e860359 CF |
408 | HMODULE dh_buf[1]; |
409 | HMODULE *DllHandle = dh_buf; | |
1e37c281 JM |
410 | DWORD cbNeeded; |
411 | BOOL ok; | |
412 | ||
413 | if (!psapi_loaded || | |
8e860359 CF |
414 | psapi_EnumProcessModules == NULL || |
415 | psapi_GetModuleInformation == NULL || | |
416 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 | 417 | { |
8e860359 CF |
418 | if (psapi_loaded) |
419 | goto failed; | |
1e37c281 JM |
420 | psapi_loaded = 1; |
421 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
422 | if (!psapi_module_handle) | |
8e860359 CF |
423 | { |
424 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
425 | goto failed; | |
426 | } | |
427 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
1e37c281 JM |
428 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
429 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
430 | "GetModuleFileNameExA"); |
431 | if (psapi_EnumProcessModules == NULL || | |
432 | psapi_GetModuleInformation == NULL || | |
433 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 JM |
434 | goto failed; |
435 | } | |
436 | ||
437 | cbNeeded = 0; | |
438 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
439 | DllHandle, |
440 | sizeof (HMODULE), | |
441 | &cbNeeded); | |
1e37c281 JM |
442 | |
443 | if (!ok || !cbNeeded) | |
444 | goto failed; | |
445 | ||
8e860359 | 446 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
447 | if (!DllHandle) |
448 | goto failed; | |
449 | ||
450 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
451 | DllHandle, |
452 | cbNeeded, | |
453 | &cbNeeded); | |
1e37c281 JM |
454 | if (!ok) |
455 | goto failed; | |
456 | ||
29fe111d | 457 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 JM |
458 | { |
459 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
460 | DllHandle[i], |
461 | &mi, | |
462 | sizeof (mi))) | |
1e37c281 JM |
463 | error ("Can't get module info"); |
464 | ||
465 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
466 | DllHandle[i], |
467 | dll_name_ret, | |
468 | MAX_PATH); | |
1e37c281 | 469 | if (len == 0) |
5633f842 | 470 | error ("Error getting dll name: %u\n", (unsigned) GetLastError ()); |
1e37c281 JM |
471 | |
472 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
473 | return 1; | |
474 | } | |
475 | ||
476 | failed: | |
477 | dll_name_ret[0] = '\0'; | |
478 | return 0; | |
479 | } | |
480 | ||
450005e7 CF |
481 | /* Encapsulate the information required in a call to |
482 | symbol_file_add_args */ | |
8a892701 CF |
483 | struct safe_symbol_file_add_args |
484 | { | |
485 | char *name; | |
486 | int from_tty; | |
487 | struct section_addr_info *addrs; | |
488 | int mainline; | |
489 | int flags; | |
7c5c87c0 | 490 | struct ui_file *err, *out; |
8a892701 CF |
491 | struct objfile *ret; |
492 | }; | |
493 | ||
02e423b9 CF |
494 | /* Maintain a linked list of "so" information. */ |
495 | struct so_stuff | |
496 | { | |
d3ff4a77 | 497 | struct so_stuff *next; |
02e423b9 | 498 | DWORD load_addr; |
5633f842 | 499 | DWORD end_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); | |
5633f842 | 576 | MEMORY_BASIC_INFORMATION m; |
3f8ad85b CF |
577 | size_t len; |
578 | ||
6badb179 CF |
579 | if (h == INVALID_HANDLE_VALUE) |
580 | strcpy (buf, name); | |
581 | else | |
3f8ad85b | 582 | { |
c914e0cc CF |
583 | FindClose (h); |
584 | strcpy (buf, name); | |
585 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
586 | { | |
587 | p = strrchr (buf, '\\'); | |
588 | if (p) | |
589 | p[1] = '\0'; | |
590 | SetCurrentDirectory (buf); | |
591 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
592 | SetCurrentDirectory (cwd); | |
593 | } | |
3f8ad85b CF |
594 | } |
595 | ||
596 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
597 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
598 | so->loaded = 0; | |
8e860359 | 599 | so->load_addr = load_addr; |
e325dcec CF |
600 | if (VirtualQueryEx (current_process_handle, (void *) load_addr, &m, |
601 | sizeof (m))) | |
5633f842 CF |
602 | so->end_addr = (DWORD) m.AllocationBase + m.RegionSize; |
603 | else | |
604 | so->end_addr = load_addr + 0x2000; /* completely arbitrary */ | |
605 | ||
d3ff4a77 CF |
606 | so->next = NULL; |
607 | so->objfile = NULL; | |
7470a420 | 608 | strcpy (so->name, ppath); |
8e860359 CF |
609 | |
610 | solib_end->next = so; | |
611 | solib_end = so; | |
3f8ad85b CF |
612 | len = strlen (ppath); |
613 | if (len > max_dll_name_len) | |
614 | max_dll_name_len = len; | |
8e860359 CF |
615 | } |
616 | ||
dfe7f3ac CF |
617 | char * |
618 | get_image_name (HANDLE h, void *address, int unicode) | |
619 | { | |
620 | static char buf[(2 * MAX_PATH) + 1]; | |
621 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
622 | char *address_ptr; | |
623 | int len = 0; | |
624 | char b[2]; | |
625 | DWORD done; | |
626 | ||
627 | /* Attempt to read the name of the dll that was detected. | |
628 | This is documented to work only when actively debugging | |
629 | a program. It will not work for attached processes. */ | |
630 | if (address == NULL) | |
631 | return NULL; | |
632 | ||
dfe7f3ac CF |
633 | /* See if we could read the address of a string, and that the |
634 | address isn't null. */ | |
9f476a01 | 635 | if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) |
6f17862b | 636 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
637 | return NULL; |
638 | ||
639 | /* Find the length of the string */ | |
6f17862b CF |
640 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
641 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
642 | continue; | |
dfe7f3ac CF |
643 | |
644 | if (!unicode) | |
645 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
646 | else | |
647 | { | |
648 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
649 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
650 | &done); | |
651 | ||
652 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
653 | } | |
654 | ||
655 | return buf; | |
656 | } | |
657 | ||
24e60978 SC |
658 | /* Wait for child to do something. Return pid of child, or -1 in case |
659 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 660 | static int |
0a65a603 | 661 | handle_load_dll (void *dummy) |
24e60978 | 662 | { |
3a4b77d8 | 663 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
3cee93ac | 664 | char dll_buf[MAX_PATH + 1]; |
450005e7 | 665 | char *dll_name = NULL; |
450005e7 | 666 | char *p; |
3cee93ac | 667 | |
3a4b77d8 | 668 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 669 | |
1e37c281 | 670 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 671 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 672 | |
1e37c281 | 673 | dll_name = dll_buf; |
24e60978 | 674 | |
dfe7f3ac CF |
675 | if (*dll_name == '\0') |
676 | dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode); | |
3cee93ac CF |
677 | if (!dll_name) |
678 | return 1; | |
679 | ||
8e860359 | 680 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
681 | |
682 | return 1; | |
683 | } | |
684 | ||
d3ff4a77 | 685 | static int |
0a65a603 | 686 | handle_unload_dll (void *dummy) |
d3ff4a77 CF |
687 | { |
688 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
689 | struct so_stuff *so; | |
690 | ||
691 | for (so = &solib_start; so->next != NULL; so = so->next) | |
692 | if (so->next->load_addr == lpBaseOfDll) | |
693 | { | |
694 | struct so_stuff *sodel = so->next; | |
695 | so->next = sodel->next; | |
696 | if (!so->next) | |
697 | solib_end = so; | |
698 | if (sodel->objfile) | |
699 | free_objfile (sodel->objfile); | |
700 | xfree(sodel); | |
701 | return 1; | |
702 | } | |
703 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
5633f842 CF |
708 | char * |
709 | solib_address (CORE_ADDR address) | |
710 | { | |
711 | struct so_stuff *so; | |
712 | for (so = &solib_start; so->next != NULL; so = so->next) | |
713 | if (address >= so->load_addr && address <= so->end_addr) | |
714 | return so->name; | |
715 | return NULL; | |
716 | } | |
717 | ||
450005e7 CF |
718 | /* Return name of last loaded DLL. */ |
719 | char * | |
0a65a603 | 720 | child_solib_loaded_library_pathname (int pid) |
450005e7 | 721 | { |
8e860359 | 722 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
723 | } |
724 | ||
725 | /* Clear list of loaded DLLs. */ | |
726 | void | |
727 | child_clear_solibs (void) | |
728 | { | |
729 | struct so_stuff *so, *so1 = solib_start.next; | |
730 | ||
731 | while ((so = so1) != NULL) | |
732 | { | |
733 | so1 = so->next; | |
b8c9b27d | 734 | xfree (so); |
450005e7 CF |
735 | } |
736 | ||
737 | solib_start.next = NULL; | |
d3ff4a77 | 738 | solib_start.objfile = NULL; |
450005e7 CF |
739 | solib_end = &solib_start; |
740 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
741 | } | |
295732ea | 742 | |
786b8124 CF |
743 | /* Get the loaded address of all sections, given that .text was loaded |
744 | at text_load. Assumes that all sections are subject to the same | |
745 | relocation offset. Returns NULL if problems occur or if the | |
746 | sections were not relocated. */ | |
747 | ||
748 | static struct section_addr_info * | |
749 | get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load) | |
750 | { | |
751 | struct section_addr_info *result = NULL; | |
752 | int section_count = bfd_count_sections (abfd); | |
753 | asection *text_section = bfd_get_section_by_name (abfd, ".text"); | |
754 | CORE_ADDR text_vma; | |
755 | ||
756 | if (!text_section) | |
757 | { | |
758 | /* Couldn't get the .text section. Weird. */ | |
759 | } | |
760 | ||
761 | else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section))) | |
762 | { | |
763 | /* DLL wasn't relocated. */ | |
764 | } | |
765 | ||
766 | else | |
767 | { | |
768 | /* Figure out all sections' loaded addresses. The offset here is | |
769 | such that taking a bfd_get_section_vma() result and adding | |
770 | offset will give the real load address of the section. */ | |
450005e7 | 771 | |
786b8124 CF |
772 | CORE_ADDR offset = text_load - text_vma; |
773 | ||
774 | struct section_table *table_start = NULL; | |
775 | struct section_table *table_end = NULL; | |
776 | struct section_table *iter = NULL; | |
777 | ||
778 | build_section_table (abfd, &table_start, &table_end); | |
779 | ||
780 | for (iter = table_start; iter < table_end; ++iter) | |
781 | { | |
782 | /* Relocated addresses. */ | |
783 | iter->addr += offset; | |
784 | iter->endaddr += offset; | |
785 | } | |
786 | ||
787 | result = build_section_addr_info_from_section_table (table_start, | |
788 | table_end); | |
789 | ||
790 | xfree (table_start); | |
791 | } | |
792 | ||
793 | return result; | |
794 | } | |
295732ea | 795 | |
450005e7 | 796 | /* Add DLL symbol information. */ |
d3ff4a77 | 797 | static struct objfile * |
02e423b9 | 798 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 | 799 | { |
9f476a01 | 800 | struct section_addr_info *addrs = NULL; |
786b8124 CF |
801 | static struct objfile *result = NULL; |
802 | bfd *abfd = NULL; | |
450005e7 | 803 | |
3cee93ac CF |
804 | /* The symbols in a dll are offset by 0x1000, which is the |
805 | the offset from 0 of the first byte in an image - because | |
8a892701 | 806 | of the file header and the section alignment. */ |
3cee93ac | 807 | |
8e860359 | 808 | if (!name || !name[0]) |
d3ff4a77 | 809 | return NULL; |
450005e7 | 810 | |
786b8124 CF |
811 | abfd = bfd_openr (name, "pei-i386"); |
812 | ||
813 | if (!abfd) | |
814 | { | |
815 | /* pei failed - try pe */ | |
816 | abfd = bfd_openr (name, "pe-i386"); | |
817 | } | |
818 | ||
819 | if (abfd) | |
820 | { | |
821 | if (bfd_check_format (abfd, bfd_object)) | |
822 | { | |
9f476a01 | 823 | addrs = get_relocated_section_addrs (abfd, load_addr); |
786b8124 CF |
824 | } |
825 | ||
826 | bfd_close (abfd); | |
827 | } | |
828 | ||
9f476a01 | 829 | if (addrs) |
786b8124 | 830 | { |
9f476a01 CF |
831 | result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED); |
832 | free_section_addr_info (addrs); | |
786b8124 | 833 | } |
786b8124 CF |
834 | else |
835 | { | |
836 | /* Fallback on handling just the .text section. */ | |
a39a16c4 | 837 | struct cleanup *my_cleanups; |
786b8124 | 838 | |
9f476a01 CF |
839 | addrs = alloc_section_addr_info (1); |
840 | my_cleanups = make_cleanup (xfree, addrs); | |
841 | addrs->other[0].name = ".text"; | |
842 | addrs->other[0].addr = load_addr; | |
786b8124 | 843 | |
9f476a01 | 844 | result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED); |
a39a16c4 | 845 | do_cleanups (my_cleanups); |
786b8124 CF |
846 | } |
847 | ||
848 | return result; | |
450005e7 CF |
849 | } |
850 | ||
851 | /* Load DLL symbol info. */ | |
852 | void | |
7470a420 | 853 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 854 | { |
8e860359 | 855 | int n; |
450005e7 | 856 | dont_repeat (); |
8e860359 | 857 | |
450005e7 CF |
858 | if (args == NULL) |
859 | error ("dll-symbols requires a file name"); | |
860 | ||
8e860359 CF |
861 | n = strlen (args); |
862 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
863 | { | |
864 | char *newargs = (char *) alloca (n + 4 + 1); | |
865 | strcpy (newargs, args); | |
866 | strcat (newargs, ".dll"); | |
867 | args = newargs; | |
868 | } | |
869 | ||
7470a420 | 870 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 871 | } |
450005e7 CF |
872 | |
873 | /* List currently loaded DLLs. */ | |
874 | void | |
0a65a603 | 875 | info_dll_command (char *ignore, int from_tty) |
450005e7 CF |
876 | { |
877 | struct so_stuff *so = &solib_start; | |
878 | ||
879 | if (!so->next) | |
880 | return; | |
881 | ||
dfe7f3ac | 882 | printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); |
450005e7 | 883 | while ((so = so->next) != NULL) |
7c5c87c0 | 884 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
885 | |
886 | return; | |
24e60978 SC |
887 | } |
888 | ||
3cee93ac CF |
889 | /* Handle DEBUG_STRING output from child process. |
890 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
891 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
892 | static int | |
893 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
894 | { | |
895 | char *s; | |
896 | int gotasig = FALSE; | |
897 | ||
898 | if (!target_read_string | |
3a4b77d8 | 899 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
3cee93ac CF |
900 | || !s || !*s) |
901 | return gotasig; | |
902 | ||
d3a09475 | 903 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
3cee93ac | 904 | { |
d3a09475 | 905 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 906 | warning ("%s", s); |
3cee93ac | 907 | } |
d3a09475 | 908 | else |
3cee93ac CF |
909 | { |
910 | char *p; | |
1e37c281 JM |
911 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
912 | gotasig = target_signal_from_host (sig); | |
0714f9bf SS |
913 | ourstatus->value.sig = gotasig; |
914 | if (gotasig) | |
3cee93ac CF |
915 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
916 | } | |
917 | ||
b8c9b27d | 918 | xfree (s); |
3cee93ac CF |
919 | return gotasig; |
920 | } | |
24e60978 | 921 | |
c1748f97 PM |
922 | static int |
923 | display_selector (HANDLE thread, DWORD sel) | |
924 | { | |
925 | LDT_ENTRY info; | |
926 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
927 | { | |
928 | int base, limit; | |
929 | printf_filtered ("0x%03lx: ", sel); | |
930 | if (!info.HighWord.Bits.Pres) | |
baa93fa6 CF |
931 | { |
932 | puts_filtered ("Segment not present\n"); | |
933 | return 0; | |
934 | } | |
c1748f97 PM |
935 | base = (info.HighWord.Bits.BaseHi << 24) + |
936 | (info.HighWord.Bits.BaseMid << 16) | |
937 | + info.BaseLow; | |
938 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
939 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 940 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
941 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
942 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 943 | puts_filtered(" 32-bit "); |
c1748f97 | 944 | else |
baa93fa6 | 945 | puts_filtered(" 16-bit "); |
c1748f97 PM |
946 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
947 | { | |
948 | case 0: | |
baa93fa6 CF |
949 | puts_filtered ("Data (Read-Only, Exp-up"); |
950 | break; | |
c1748f97 | 951 | case 1: |
baa93fa6 CF |
952 | puts_filtered ("Data (Read/Write, Exp-up"); |
953 | break; | |
c1748f97 | 954 | case 2: |
baa93fa6 CF |
955 | puts_filtered ("Unused segment ("); |
956 | break; | |
c1748f97 | 957 | case 3: |
baa93fa6 CF |
958 | puts_filtered ("Data (Read/Write, Exp-down"); |
959 | break; | |
c1748f97 | 960 | case 4: |
baa93fa6 CF |
961 | puts_filtered ("Code (Exec-Only, N.Conf"); |
962 | break; | |
c1748f97 | 963 | case 5: |
baa93fa6 | 964 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
965 | break; |
966 | case 6: | |
baa93fa6 | 967 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
968 | break; |
969 | case 7: | |
baa93fa6 | 970 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
971 | break; |
972 | default: | |
973 | printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); | |
974 | } | |
975 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 976 | puts_filtered(", N.Acc"); |
c1748f97 PM |
977 | puts_filtered (")\n"); |
978 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
979 | puts_filtered("System selector "); | |
980 | printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); | |
981 | if (info.HighWord.Bits.Granularity) | |
baa93fa6 | 982 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
983 | else |
984 | puts_filtered ("Byte granular.\n"); | |
985 | return 1; | |
986 | } | |
987 | else | |
988 | { | |
989 | printf_filtered ("Invalid selector 0x%lx.\n",sel); | |
990 | return 0; | |
991 | } | |
992 | } | |
993 | ||
994 | static void | |
995 | display_selectors (char * args, int from_tty) | |
996 | { | |
997 | if (!current_thread) | |
998 | { | |
999 | puts_filtered ("Impossible to display selectors now.\n"); | |
1000 | return; | |
1001 | } | |
1002 | if (!args) | |
1003 | { | |
1004 | ||
1005 | puts_filtered ("Selector $cs\n"); | |
1006 | display_selector (current_thread->h, | |
baa93fa6 | 1007 | current_thread->context.SegCs); |
c1748f97 PM |
1008 | puts_filtered ("Selector $ds\n"); |
1009 | display_selector (current_thread->h, | |
baa93fa6 | 1010 | current_thread->context.SegDs); |
c1748f97 PM |
1011 | puts_filtered ("Selector $es\n"); |
1012 | display_selector (current_thread->h, | |
baa93fa6 | 1013 | current_thread->context.SegEs); |
c1748f97 PM |
1014 | puts_filtered ("Selector $ss\n"); |
1015 | display_selector (current_thread->h, | |
baa93fa6 | 1016 | current_thread->context.SegSs); |
c1748f97 PM |
1017 | puts_filtered ("Selector $fs\n"); |
1018 | display_selector (current_thread->h, | |
1019 | current_thread->context.SegFs); | |
1020 | puts_filtered ("Selector $gs\n"); | |
1021 | display_selector (current_thread->h, | |
baa93fa6 | 1022 | current_thread->context.SegGs); |
c1748f97 PM |
1023 | } |
1024 | else | |
1025 | { | |
1026 | int sel; | |
1027 | sel = parse_and_eval_long (args); | |
1028 | printf_filtered ("Selector \"%s\"\n",args); | |
1029 | display_selector (current_thread->h, sel); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | static struct cmd_list_element *info_w32_cmdlist = NULL; | |
1034 | ||
1035 | static void | |
1036 | info_w32_command (char *args, int from_tty) | |
1037 | { | |
1038 | help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); | |
1039 | } | |
1040 | ||
1041 | ||
7393af7c | 1042 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
4e52d31c | 1043 | printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \ |
7393af7c PM |
1044 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress) |
1045 | ||
36339ecd | 1046 | static int |
450005e7 | 1047 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 1048 | { |
3cee93ac | 1049 | thread_info *th; |
29fe111d | 1050 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 1051 | |
29fe111d | 1052 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1053 | |
3cee93ac CF |
1054 | /* Record the context of the current thread */ |
1055 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 1056 | |
29fe111d | 1057 | switch (code) |
24e60978 | 1058 | { |
1ef980b9 | 1059 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c PM |
1060 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
1061 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
1062 | break; | |
1063 | case STATUS_STACK_OVERFLOW: | |
1064 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
1ef980b9 | 1065 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
7393af7c PM |
1066 | break; |
1067 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1068 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
1069 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1070 | break; | |
1071 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1072 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
1073 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1074 | break; | |
1075 | case STATUS_FLOAT_INEXACT_RESULT: | |
1076 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
1077 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1078 | break; | |
1079 | case STATUS_FLOAT_INVALID_OPERATION: | |
1080 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
1081 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1082 | break; | |
1083 | case STATUS_FLOAT_OVERFLOW: | |
1084 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
1085 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1086 | break; | |
1087 | case STATUS_FLOAT_STACK_CHECK: | |
1088 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
1089 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 | 1090 | break; |
3b7c8b74 | 1091 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c PM |
1092 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
1093 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1094 | break; | |
3b7c8b74 | 1095 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c PM |
1096 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
1097 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1098 | break; | |
3b7c8b74 | 1099 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1100 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
3b7c8b74 | 1101 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
3b7c8b74 | 1102 | break; |
7393af7c PM |
1103 | case STATUS_INTEGER_OVERFLOW: |
1104 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
1105 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 SC |
1106 | break; |
1107 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1108 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
1ef980b9 SC |
1109 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1110 | break; | |
1111 | case DBG_CONTROL_C: | |
7393af7c | 1112 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
1ef980b9 | 1113 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
1114 | break; |
1115 | case DBG_CONTROL_BREAK: | |
7393af7c | 1116 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
5b421780 | 1117 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
1ef980b9 SC |
1118 | break; |
1119 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1120 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
1ef980b9 SC |
1121 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1122 | break; | |
8227c82d | 1123 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c PM |
1124 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
1125 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1126 | break; | |
1127 | case EXCEPTION_PRIV_INSTRUCTION: | |
1128 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
1129 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1130 | break; | |
1131 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1132 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
8227c82d CF |
1133 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
1134 | break; | |
1ef980b9 | 1135 | default: |
02e423b9 CF |
1136 | if (current_event.u.Exception.dwFirstChance) |
1137 | return 0; | |
29fe111d | 1138 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
3a4b77d8 | 1139 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 1140 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
24e60978 | 1141 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 1142 | break; |
24e60978 | 1143 | } |
24e60978 | 1144 | exception_count++; |
7393af7c | 1145 | last_sig = ourstatus->value.sig; |
36339ecd | 1146 | return 1; |
24e60978 SC |
1147 | } |
1148 | ||
3cee93ac CF |
1149 | /* Resume all artificially suspended threads if we are continuing |
1150 | execution */ | |
1151 | static BOOL | |
8a892701 | 1152 | child_continue (DWORD continue_status, int id) |
3cee93ac CF |
1153 | { |
1154 | int i; | |
1155 | thread_info *th; | |
1156 | BOOL res; | |
1157 | ||
7393af7c PM |
1158 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n", |
1159 | current_event.dwProcessId, current_event.dwThreadId, | |
dfe7f3ac | 1160 | continue_status == DBG_CONTINUE ? |
7393af7c | 1161 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
0714f9bf SS |
1162 | res = ContinueDebugEvent (current_event.dwProcessId, |
1163 | current_event.dwThreadId, | |
1164 | continue_status); | |
1e37c281 | 1165 | continue_status = 0; |
0714f9bf | 1166 | if (res) |
3a4b77d8 | 1167 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 1168 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
3cee93ac | 1169 | { |
fa4ba8da | 1170 | |
3cee93ac CF |
1171 | for (i = 0; i < th->suspend_count; i++) |
1172 | (void) ResumeThread (th->h); | |
1173 | th->suspend_count = 0; | |
fa4ba8da PM |
1174 | if (debug_registers_changed) |
1175 | { | |
1176 | /* Only change the value of the debug reisters */ | |
1177 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
1178 | th->context.Dr0 = dr[0]; | |
1179 | th->context.Dr1 = dr[1]; | |
1180 | th->context.Dr2 = dr[2]; | |
1181 | th->context.Dr3 = dr[3]; | |
1182 | /* th->context.Dr6 = dr[6]; | |
dfe7f3ac | 1183 | FIXME: should we set dr6 also ?? */ |
fa4ba8da PM |
1184 | th->context.Dr7 = dr[7]; |
1185 | CHECK (SetThreadContext (th->h, &th->context)); | |
1186 | th->context.ContextFlags = 0; | |
1187 | } | |
3cee93ac CF |
1188 | } |
1189 | ||
fa4ba8da | 1190 | debug_registers_changed = 0; |
3cee93ac CF |
1191 | return res; |
1192 | } | |
1193 | ||
8a892701 CF |
1194 | /* Get the next event from the child. Return 1 if the event requires |
1195 | handling by WFI (or whatever). | |
1196 | */ | |
1e37c281 | 1197 | static int |
0a65a603 | 1198 | get_child_debug_event (int pid, struct target_waitstatus *ourstatus) |
1e37c281 JM |
1199 | { |
1200 | BOOL debug_event; | |
8a892701 CF |
1201 | DWORD continue_status, event_code; |
1202 | thread_info *th = NULL; | |
1203 | static thread_info dummy_thread_info; | |
450005e7 | 1204 | int retval = 0; |
1e37c281 | 1205 | |
7393af7c | 1206 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 | 1207 | |
8a892701 | 1208 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1209 | goto out; |
1e37c281 JM |
1210 | |
1211 | event_count++; | |
1212 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1213 | |
8a892701 | 1214 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1215 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
1216 | |
1217 | switch (event_code) | |
1e37c281 JM |
1218 | { |
1219 | case CREATE_THREAD_DEBUG_EVENT: | |
1220 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
1221 | (unsigned) current_event.dwProcessId, |
1222 | (unsigned) current_event.dwThreadId, | |
1223 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac CF |
1224 | if (saw_create != 1) |
1225 | break; | |
1e37c281 | 1226 | /* Record the existence of this thread */ |
8a892701 CF |
1227 | th = child_add_thread (current_event.dwThreadId, |
1228 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
1229 | if (info_verbose) |
1230 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
1231 | target_pid_to_str ( |
1232 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 1233 | retval = current_event.dwThreadId; |
1e37c281 JM |
1234 | break; |
1235 | ||
1236 | case EXIT_THREAD_DEBUG_EVENT: | |
1237 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1238 | (unsigned) current_event.dwProcessId, |
1239 | (unsigned) current_event.dwThreadId, | |
1240 | "EXIT_THREAD_DEBUG_EVENT")); | |
dfe7f3ac CF |
1241 | if (saw_create != 1) |
1242 | break; | |
1e37c281 | 1243 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 1244 | th = &dummy_thread_info; |
1e37c281 JM |
1245 | break; |
1246 | ||
1247 | case CREATE_PROCESS_DEBUG_EVENT: | |
1248 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1249 | (unsigned) current_event.dwProcessId, |
1250 | (unsigned) current_event.dwThreadId, | |
1251 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1252 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac CF |
1253 | if (++saw_create != 1) |
1254 | { | |
1255 | CloseHandle (current_event.u.CreateProcessInfo.hProcess); | |
1256 | break; | |
1257 | } | |
1e37c281 | 1258 | |
dfe7f3ac | 1259 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
9d3789f7 | 1260 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 1261 | /* Add the main thread */ |
9d3789f7 | 1262 | #if 0 |
450005e7 CF |
1263 | th = child_add_thread (current_event.dwProcessId, |
1264 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
1265 | #endif |
1266 | th = child_add_thread (main_thread_id, | |
8a892701 | 1267 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 1268 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
1e37c281 JM |
1269 | break; |
1270 | ||
1271 | case EXIT_PROCESS_DEBUG_EVENT: | |
1272 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1273 | (unsigned) current_event.dwProcessId, |
1274 | (unsigned) current_event.dwThreadId, | |
1275 | "EXIT_PROCESS_DEBUG_EVENT")); | |
dfe7f3ac CF |
1276 | if (saw_create != 1) |
1277 | break; | |
1e37c281 JM |
1278 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
1279 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1280 | CloseHandle (current_process_handle); | |
9d3789f7 | 1281 | retval = main_thread_id; |
8a892701 | 1282 | break; |
1e37c281 JM |
1283 | |
1284 | case LOAD_DLL_DEBUG_EVENT: | |
1285 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1286 | (unsigned) current_event.dwProcessId, |
1287 | (unsigned) current_event.dwThreadId, | |
1288 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1289 | CloseHandle (current_event.u.LoadDll.hFile); |
dfe7f3ac CF |
1290 | if (saw_create != 1) |
1291 | break; | |
8a892701 | 1292 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
1e37c281 | 1293 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
1294 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1295 | ourstatus->value.integer = 0; | |
9d3789f7 | 1296 | retval = main_thread_id; |
5633f842 | 1297 | re_enable_breakpoints_in_shlibs (); |
1e37c281 JM |
1298 | break; |
1299 | ||
1300 | case UNLOAD_DLL_DEBUG_EVENT: | |
1301 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1302 | (unsigned) current_event.dwProcessId, |
1303 | (unsigned) current_event.dwThreadId, | |
1304 | "UNLOAD_DLL_DEBUG_EVENT")); | |
dfe7f3ac CF |
1305 | if (saw_create != 1) |
1306 | break; | |
d3ff4a77 CF |
1307 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
1308 | registers_changed (); /* mark all regs invalid */ | |
1309 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
3bccec63 | 1310 | does not exist yet. */ |
d3ff4a77 | 1311 | break; |
1e37c281 JM |
1312 | |
1313 | case EXCEPTION_DEBUG_EVENT: | |
1314 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1315 | (unsigned) current_event.dwProcessId, |
1316 | (unsigned) current_event.dwThreadId, | |
1317 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1318 | if (saw_create != 1) |
1319 | break; | |
02e423b9 CF |
1320 | if (handle_exception (ourstatus)) |
1321 | retval = current_event.dwThreadId; | |
1e37c281 JM |
1322 | break; |
1323 | ||
8a892701 | 1324 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1e37c281 | 1325 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1326 | (unsigned) current_event.dwProcessId, |
1327 | (unsigned) current_event.dwThreadId, | |
1328 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1329 | if (saw_create != 1) |
1330 | break; | |
8e860359 | 1331 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 1332 | retval = main_thread_id; |
1e37c281 | 1333 | break; |
9d3789f7 | 1334 | |
1e37c281 | 1335 | default: |
dfe7f3ac CF |
1336 | if (saw_create != 1) |
1337 | break; | |
29fe111d CF |
1338 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1339 | (DWORD) current_event.dwProcessId, | |
1340 | (DWORD) current_event.dwThreadId); | |
1341 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
1342 | current_event.dwDebugEventCode); |
1343 | break; | |
1344 | } | |
1345 | ||
dfe7f3ac | 1346 | if (!retval || saw_create != 1) |
8a892701 | 1347 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 1348 | else |
9d3789f7 | 1349 | { |
8e860359 | 1350 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1351 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1352 | } |
1e37c281 JM |
1353 | |
1354 | out: | |
450005e7 | 1355 | return retval; |
1e37c281 JM |
1356 | } |
1357 | ||
1e37c281 | 1358 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1359 | static ptid_t |
1360 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
24e60978 | 1361 | { |
39f77062 KB |
1362 | int pid = PIDGET (ptid); |
1363 | ||
24e60978 SC |
1364 | /* We loop when we get a non-standard exception rather than return |
1365 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1366 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
1367 | the birth or death of threads, which mean that the current thread |
1368 | isn't necessarily what you think it is. */ | |
1369 | ||
1370 | while (1) | |
450005e7 CF |
1371 | { |
1372 | int retval = get_child_debug_event (pid, ourstatus); | |
1373 | if (retval) | |
39f77062 | 1374 | return pid_to_ptid (retval); |
450005e7 CF |
1375 | else |
1376 | { | |
1377 | int detach = 0; | |
3cee93ac | 1378 | |
450005e7 CF |
1379 | if (ui_loop_hook != NULL) |
1380 | detach = ui_loop_hook (0); | |
0714f9bf | 1381 | |
450005e7 CF |
1382 | if (detach) |
1383 | child_kill_inferior (); | |
1384 | } | |
1385 | } | |
24e60978 SC |
1386 | } |
1387 | ||
9d3789f7 CF |
1388 | static void |
1389 | do_initial_child_stuff (DWORD pid) | |
1390 | { | |
1391 | extern int stop_after_trap; | |
fa4ba8da | 1392 | int i; |
9d3789f7 | 1393 | |
7393af7c | 1394 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 CF |
1395 | event_count = 0; |
1396 | exception_count = 0; | |
fa4ba8da | 1397 | debug_registers_changed = 0; |
dfe7f3ac | 1398 | debug_registers_used = 0; |
fa4ba8da PM |
1399 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1400 | dr[i] = 0; | |
9d3789f7 CF |
1401 | current_event.dwProcessId = pid; |
1402 | memset (¤t_event, 0, sizeof (current_event)); | |
1403 | push_target (&child_ops); | |
1404 | child_init_thread_list (); | |
5633f842 | 1405 | disable_breakpoints_in_shlibs (1); |
9d3789f7 CF |
1406 | child_clear_solibs (); |
1407 | clear_proceed_status (); | |
1408 | init_wait_for_inferior (); | |
1409 | ||
1410 | target_terminal_init (); | |
1411 | target_terminal_inferior (); | |
1412 | ||
1413 | while (1) | |
1414 | { | |
1415 | stop_after_trap = 1; | |
1416 | wait_for_inferior (); | |
1417 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1418 | resume (0, stop_signal); | |
1419 | else | |
1420 | break; | |
1421 | } | |
1422 | stop_after_trap = 0; | |
1423 | return; | |
1424 | } | |
1425 | ||
02cc9f49 CV |
1426 | /* Since Windows XP, detaching from a process is supported by Windows. |
1427 | The following code tries loading the appropriate functions dynamically. | |
1428 | If loading these functions succeeds use them to actually detach from | |
1429 | the inferior process, otherwise behave as usual, pretending that | |
1430 | detach has worked. */ | |
1431 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1432 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1433 | ||
1434 | static int | |
5ae5f592 | 1435 | has_detach_ability (void) |
02cc9f49 CV |
1436 | { |
1437 | static HMODULE kernel32 = NULL; | |
1438 | ||
1439 | if (!kernel32) | |
1440 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1441 | if (kernel32) | |
1442 | { | |
1443 | if (!DebugSetProcessKillOnExit) | |
1444 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1445 | "DebugSetProcessKillOnExit"); | |
1446 | if (!DebugActiveProcessStop) | |
1447 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1448 | "DebugActiveProcessStop"); | |
1449 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1450 | return 1; | |
1451 | } | |
1452 | return 0; | |
1453 | } | |
24e60978 | 1454 | |
616a9dc4 CV |
1455 | /* Try to set or remove a user privilege to the current process. Return -1 |
1456 | if that fails, the previous setting of that privilege otherwise. | |
1457 | ||
1458 | This code is copied from the Cygwin source code and rearranged to allow | |
1459 | dynamically loading of the needed symbols from advapi32 which is only | |
1460 | available on NT/2K/XP. */ | |
1461 | static int | |
1462 | set_process_privilege (const char *privilege, BOOL enable) | |
1463 | { | |
1464 | static HMODULE advapi32 = NULL; | |
1465 | static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE); | |
1466 | static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID); | |
1467 | static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, | |
1468 | DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
1469 | ||
1470 | HANDLE token_hdl = NULL; | |
1471 | LUID restore_priv; | |
1472 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1473 | int ret = -1; | |
1474 | DWORD size; | |
1475 | ||
1476 | if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */ | |
1477 | return 0; | |
1478 | ||
1479 | if (!advapi32) | |
1480 | { | |
1481 | if (!(advapi32 = LoadLibrary ("advapi32.dll"))) | |
1482 | goto out; | |
1483 | if (!OpenProcessToken) | |
1484 | OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken"); | |
1485 | if (!LookupPrivilegeValue) | |
1486 | LookupPrivilegeValue = GetProcAddress (advapi32, | |
1487 | "LookupPrivilegeValueA"); | |
1488 | if (!AdjustTokenPrivileges) | |
1489 | AdjustTokenPrivileges = GetProcAddress (advapi32, | |
1490 | "AdjustTokenPrivileges"); | |
1491 | if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges) | |
295732ea | 1492 | { |
616a9dc4 CV |
1493 | advapi32 = NULL; |
1494 | goto out; | |
1495 | } | |
1496 | } | |
295732ea | 1497 | |
616a9dc4 CV |
1498 | if (!OpenProcessToken (GetCurrentProcess (), |
1499 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1500 | &token_hdl)) | |
1501 | goto out; | |
1502 | ||
1503 | if (!LookupPrivilegeValue (NULL, privilege, &restore_priv)) | |
1504 | goto out; | |
1505 | ||
1506 | new_priv.PrivilegeCount = 1; | |
1507 | new_priv.Privileges[0].Luid = restore_priv; | |
1508 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1509 | ||
1510 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1511 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1512 | goto out; |
1513 | #if 0 | |
1514 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1515 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
1516 | child_attach(). */ | |
1517 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not | |
1518 | be enabled. GetLastError () returns an correct error code, though. */ | |
1519 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) | |
1520 | goto out; | |
1521 | #endif | |
1522 | ||
1523 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1524 | ||
1525 | out: | |
1526 | if (token_hdl) | |
1527 | CloseHandle (token_hdl); | |
1528 | ||
1529 | return ret; | |
1530 | } | |
1531 | ||
02cc9f49 | 1532 | /* Attach to process PID, then initialize for debugging it. */ |
24e60978 | 1533 | static void |
fba45db2 | 1534 | child_attach (char *args, int from_tty) |
24e60978 SC |
1535 | { |
1536 | BOOL ok; | |
559e75c0 | 1537 | DWORD pid; |
24e60978 SC |
1538 | |
1539 | if (!args) | |
1540 | error_no_arg ("process-id to attach"); | |
1541 | ||
616a9dc4 CV |
1542 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1543 | { | |
1544 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
1545 | printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n"); | |
1546 | } | |
1547 | ||
baa93fa6 CF |
1548 | pid = strtoul (args, 0, 0); /* Windows pid */ |
1549 | ||
9d3789f7 | 1550 | ok = DebugActiveProcess (pid); |
91a175b3 | 1551 | saw_create = 0; |
24e60978 SC |
1552 | |
1553 | if (!ok) | |
baa93fa6 CF |
1554 | { |
1555 | /* Try fall back to Cygwin pid */ | |
1556 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); | |
1557 | ||
1558 | if (pid > 0) | |
1559 | ok = DebugActiveProcess (pid); | |
1560 | ||
1561 | if (!ok) | |
caad7706 | 1562 | error ("Can't attach to process."); |
baa93fa6 | 1563 | } |
24e60978 | 1564 | |
02cc9f49 CV |
1565 | if (has_detach_ability ()) |
1566 | { | |
1567 | attach_flag = 1; | |
1568 | DebugSetProcessKillOnExit (FALSE); | |
1569 | } | |
1570 | ||
24e60978 SC |
1571 | if (from_tty) |
1572 | { | |
1573 | char *exec_file = (char *) get_exec_file (0); | |
1574 | ||
1575 | if (exec_file) | |
1576 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1577 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1578 | else |
1579 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1580 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1581 | |
1582 | gdb_flush (gdb_stdout); | |
1583 | } | |
1584 | ||
9d3789f7 CF |
1585 | do_initial_child_stuff (pid); |
1586 | target_terminal_ours (); | |
24e60978 SC |
1587 | } |
1588 | ||
24e60978 | 1589 | static void |
0a65a603 | 1590 | child_detach (char *args, int from_tty) |
24e60978 | 1591 | { |
02cc9f49 CV |
1592 | int detached = 1; |
1593 | ||
1594 | if (has_detach_ability ()) | |
1595 | { | |
1596 | delete_command (NULL, 0); | |
1597 | child_continue (DBG_CONTINUE, -1); | |
1598 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
3bccec63 | 1599 | { |
02cc9f49 CV |
1600 | error ("Can't detach process %lu (error %lu)", |
1601 | current_event.dwProcessId, GetLastError ()); | |
1602 | detached = 0; | |
3bccec63 | 1603 | } |
02cc9f49 CV |
1604 | DebugSetProcessKillOnExit (FALSE); |
1605 | } | |
1606 | if (detached && from_tty) | |
24e60978 SC |
1607 | { |
1608 | char *exec_file = get_exec_file (0); | |
1609 | if (exec_file == 0) | |
1610 | exec_file = ""; | |
02cc9f49 CV |
1611 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1612 | current_event.dwProcessId); | |
24e60978 SC |
1613 | gdb_flush (gdb_stdout); |
1614 | } | |
39f77062 | 1615 | inferior_ptid = null_ptid; |
24e60978 SC |
1616 | unpush_target (&child_ops); |
1617 | } | |
1618 | ||
24e60978 SC |
1619 | /* Print status information about what we're accessing. */ |
1620 | ||
1621 | static void | |
0a65a603 | 1622 | child_files_info (struct target_ops *ignore) |
24e60978 SC |
1623 | { |
1624 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1625 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
24e60978 SC |
1626 | } |
1627 | ||
1628 | /* ARGSUSED */ | |
1629 | static void | |
0a65a603 | 1630 | child_open (char *arg, int from_tty) |
24e60978 SC |
1631 | { |
1632 | error ("Use the \"run\" command to start a Unix child process."); | |
1633 | } | |
1634 | ||
39f77062 | 1635 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
24e60978 SC |
1636 | EXEC_FILE is the file to run. |
1637 | ALLARGS is a string containing the arguments to the program. | |
1638 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1639 | ||
24e60978 | 1640 | static void |
fba45db2 | 1641 | child_create_inferior (char *exec_file, char *allargs, char **env) |
24e60978 | 1642 | { |
1750a5ef SC |
1643 | char *winenv; |
1644 | char *temp; | |
3a4b77d8 | 1645 | int envlen; |
1750a5ef | 1646 | int i; |
24e60978 SC |
1647 | STARTUPINFO si; |
1648 | PROCESS_INFORMATION pi; | |
24e60978 SC |
1649 | BOOL ret; |
1650 | DWORD flags; | |
eb708f2e | 1651 | char *args; |
dfe7f3ac CF |
1652 | char real_path[MAXPATHLEN]; |
1653 | char *toexec; | |
349b409f CF |
1654 | char shell[MAX_PATH + 1]; /* Path to shell */ |
1655 | const char *sh; | |
2becadee CF |
1656 | int tty; |
1657 | int ostdin, ostdout, ostderr; | |
24e60978 SC |
1658 | |
1659 | if (!exec_file) | |
450005e7 | 1660 | error ("No executable specified, use `target exec'.\n"); |
24e60978 SC |
1661 | |
1662 | memset (&si, 0, sizeof (si)); | |
1663 | si.cb = sizeof (si); | |
1664 | ||
349b409f | 1665 | if (!useshell) |
dfe7f3ac CF |
1666 | { |
1667 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1668 | cygwin_conv_to_win32_path (exec_file, real_path); | |
1669 | toexec = real_path; | |
1670 | } | |
1671 | else | |
1672 | { | |
349b409f CF |
1673 | char *newallargs; |
1674 | sh = getenv ("SHELL"); | |
1675 | if (!sh) | |
1676 | sh = "/bin/sh"; | |
1677 | cygwin_conv_to_win32_path (sh, shell); | |
1678 | newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file) | |
1679 | + strlen (allargs) + 2); | |
dfe7f3ac CF |
1680 | sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs); |
1681 | allargs = newallargs; | |
1682 | toexec = shell; | |
1683 | flags = DEBUG_PROCESS; | |
1684 | } | |
eb708f2e | 1685 | |
eeb25b8a PM |
1686 | if (new_group) |
1687 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1688 | ||
1689 | if (new_console) | |
1690 | flags |= CREATE_NEW_CONSOLE; | |
1691 | ||
dfe7f3ac CF |
1692 | args = alloca (strlen (toexec) + strlen (allargs) + 2); |
1693 | strcpy (args, toexec); | |
eb708f2e SC |
1694 | strcat (args, " "); |
1695 | strcat (args, allargs); | |
1696 | ||
e88c49c3 DE |
1697 | /* Prepare the environment vars for CreateProcess. */ |
1698 | { | |
349b409f | 1699 | /* This code used to assume all env vars were file names and would |
e88c49c3 | 1700 | translate them all to win32 style. That obviously doesn't work in the |
2dcfc9c7 DE |
1701 | general case. The current rule is that we only translate PATH. |
1702 | We need to handle PATH because we're about to call CreateProcess and | |
1703 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1704 | in both posix and win32 environments. cygwin.dll will change it back | |
1705 | to posix style if necessary. */ | |
e88c49c3 DE |
1706 | |
1707 | static const char *conv_path_names[] = | |
3a4b77d8 JM |
1708 | { |
1709 | "PATH=", | |
1710 | 0 | |
1711 | }; | |
e88c49c3 DE |
1712 | |
1713 | /* CreateProcess takes the environment list as a null terminated set of | |
1714 | strings (i.e. two nulls terminate the list). */ | |
1715 | ||
1716 | /* Get total size for env strings. */ | |
1717 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1718 | { | |
2dcfc9c7 | 1719 | int j, len; |
e88c49c3 | 1720 | |
2dcfc9c7 DE |
1721 | for (j = 0; conv_path_names[j]; j++) |
1722 | { | |
1723 | len = strlen (conv_path_names[j]); | |
1724 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1725 | { |
29fe111d | 1726 | if (cygwin_posix_path_list_p (env[i] + len)) |
2dcfc9c7 | 1727 | envlen += len |
29fe111d | 1728 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
2dcfc9c7 DE |
1729 | else |
1730 | envlen += strlen (env[i]) + 1; | |
1731 | break; | |
e88c49c3 | 1732 | } |
e88c49c3 | 1733 | } |
2dcfc9c7 | 1734 | if (conv_path_names[j] == NULL) |
e88c49c3 DE |
1735 | envlen += strlen (env[i]) + 1; |
1736 | } | |
1737 | ||
1738 | winenv = alloca (envlen + 1); | |
1739 | ||
1740 | /* Copy env strings into new buffer. */ | |
3cee93ac | 1741 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) |
e88c49c3 | 1742 | { |
2dcfc9c7 | 1743 | int j, len; |
e88c49c3 | 1744 | |
2dcfc9c7 DE |
1745 | for (j = 0; conv_path_names[j]; j++) |
1746 | { | |
1747 | len = strlen (conv_path_names[j]); | |
1748 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1749 | { |
29fe111d | 1750 | if (cygwin_posix_path_list_p (env[i] + len)) |
e88c49c3 DE |
1751 | { |
1752 | memcpy (temp, env[i], len); | |
29fe111d | 1753 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
e88c49c3 | 1754 | } |
2dcfc9c7 DE |
1755 | else |
1756 | strcpy (temp, env[i]); | |
1757 | break; | |
e88c49c3 | 1758 | } |
e88c49c3 | 1759 | } |
2dcfc9c7 | 1760 | if (conv_path_names[j] == NULL) |
e88c49c3 | 1761 | strcpy (temp, env[i]); |
2dcfc9c7 | 1762 | |
e88c49c3 DE |
1763 | temp += strlen (temp) + 1; |
1764 | } | |
1765 | ||
1766 | /* Final nil string to terminate new env. */ | |
1767 | *temp = 0; | |
1768 | } | |
1750a5ef | 1769 | |
2becadee CF |
1770 | if (!inferior_io_terminal) |
1771 | tty = ostdin = ostdout = ostderr = -1; | |
1772 | else | |
1773 | { | |
1774 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
1775 | if (tty < 0) | |
1776 | { | |
1777 | print_sys_errmsg (inferior_io_terminal, errno); | |
1778 | ostdin = ostdout = ostderr = -1; | |
1779 | } | |
1780 | else | |
1781 | { | |
1782 | ostdin = dup (0); | |
1783 | ostdout = dup (1); | |
1784 | ostderr = dup (2); | |
1785 | dup2 (tty, 0); | |
1786 | dup2 (tty, 1); | |
1787 | dup2 (tty, 2); | |
1788 | } | |
1789 | } | |
1790 | ||
1750a5ef | 1791 | ret = CreateProcess (0, |
3a4b77d8 | 1792 | args, /* command line */ |
24e60978 SC |
1793 | NULL, /* Security */ |
1794 | NULL, /* thread */ | |
1795 | TRUE, /* inherit handles */ | |
1796 | flags, /* start flags */ | |
1750a5ef | 1797 | winenv, |
24e60978 SC |
1798 | NULL, /* current directory */ |
1799 | &si, | |
1800 | &pi); | |
2becadee CF |
1801 | if (tty >= 0) |
1802 | { | |
1803 | close (tty); | |
1804 | dup2 (ostdin, 0); | |
1805 | dup2 (ostdout, 1); | |
1806 | dup2 (ostderr, 2); | |
1807 | close (ostdin); | |
1808 | close (ostdout); | |
1809 | close (ostderr); | |
1810 | } | |
1811 | ||
24e60978 | 1812 | if (!ret) |
5633f842 | 1813 | error ("Error creating process %s, (error %d)\n", exec_file, (unsigned) GetLastError ()); |
24e60978 | 1814 | |
700b351b CF |
1815 | CloseHandle (pi.hThread); |
1816 | CloseHandle (pi.hProcess); | |
dfe7f3ac CF |
1817 | |
1818 | if (useshell && shell[0] != '\0') | |
1819 | saw_create = -1; | |
1820 | else | |
1821 | saw_create = 0; | |
1822 | ||
9d3789f7 | 1823 | do_initial_child_stuff (pi.dwProcessId); |
d3a09475 | 1824 | |
8e860359 | 1825 | /* child_continue (DBG_CONTINUE, -1); */ |
1e37c281 | 1826 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
24e60978 SC |
1827 | } |
1828 | ||
1829 | static void | |
fba45db2 | 1830 | child_mourn_inferior (void) |
24e60978 | 1831 | { |
8a892701 | 1832 | (void) child_continue (DBG_CONTINUE, -1); |
fa4ba8da | 1833 | i386_cleanup_dregs(); |
24e60978 SC |
1834 | unpush_target (&child_ops); |
1835 | generic_mourn_inferior (); | |
1836 | } | |
1837 | ||
24e60978 SC |
1838 | /* Send a SIGINT to the process group. This acts just like the user typed a |
1839 | ^C on the controlling terminal. */ | |
1840 | ||
b607efe7 | 1841 | static void |
fba45db2 | 1842 | child_stop (void) |
24e60978 | 1843 | { |
1ef980b9 | 1844 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 1845 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 1846 | registers_changed (); /* refresh register state */ |
24e60978 SC |
1847 | } |
1848 | ||
1849 | int | |
eb708f2e | 1850 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, |
0a65a603 AC |
1851 | int write, struct mem_attrib *mem, |
1852 | struct target_ops *target) | |
24e60978 | 1853 | { |
6f17862b | 1854 | DWORD done = 0; |
24e60978 SC |
1855 | if (write) |
1856 | { | |
29fe111d CF |
1857 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1858 | len, (DWORD) memaddr)); | |
6f17862b CF |
1859 | if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1860 | len, &done)) | |
1861 | done = 0; | |
3cee93ac | 1862 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); |
24e60978 SC |
1863 | } |
1864 | else | |
1865 | { | |
29fe111d CF |
1866 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1867 | len, (DWORD) memaddr)); | |
6f17862b CF |
1868 | if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, |
1869 | len, &done)) | |
1870 | done = 0; | |
24e60978 SC |
1871 | } |
1872 | return done; | |
1873 | } | |
1874 | ||
1875 | void | |
1876 | child_kill_inferior (void) | |
1877 | { | |
3cee93ac CF |
1878 | CHECK (TerminateProcess (current_process_handle, 0)); |
1879 | ||
b5edcb45 ILT |
1880 | for (;;) |
1881 | { | |
8a892701 | 1882 | if (!child_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 1883 | break; |
3cee93ac | 1884 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 1885 | break; |
3cee93ac | 1886 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
1887 | break; |
1888 | } | |
1889 | ||
3cee93ac CF |
1890 | CHECK (CloseHandle (current_process_handle)); |
1891 | ||
1892 | /* this may fail in an attached process so don't check. */ | |
1893 | (void) CloseHandle (current_thread->h); | |
3a4b77d8 | 1894 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
24e60978 SC |
1895 | } |
1896 | ||
1897 | void | |
39f77062 | 1898 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
24e60978 | 1899 | { |
3cee93ac | 1900 | thread_info *th; |
7393af7c PM |
1901 | DWORD continue_status = DBG_CONTINUE; |
1902 | ||
39f77062 | 1903 | int pid = PIDGET (ptid); |
8a892701 | 1904 | |
7393af7c PM |
1905 | if (sig != TARGET_SIGNAL_0) |
1906 | { | |
1907 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1908 | { | |
1909 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1910 | } | |
1911 | else if (sig == last_sig) | |
1912 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1913 | else | |
1914 | #if 0 | |
1915 | /* This code does not seem to work, because | |
1916 | the kernel does probably not consider changes in the ExceptionRecord | |
dfe7f3ac | 1917 | structure when passing the exception to the inferior. |
7393af7c PM |
1918 | Note that this seems possible in the exception handler itself. */ |
1919 | { | |
1920 | int i; | |
1921 | for (i = 0; xlate[i].them != -1; i++) | |
1922 | if (xlate[i].us == sig) | |
1923 | { | |
1924 | current_event.u.Exception.ExceptionRecord.ExceptionCode = | |
1925 | xlate[i].them; | |
1926 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1927 | break; | |
1928 | } | |
1929 | if (continue_status == DBG_CONTINUE) | |
1930 | { | |
1931 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1932 | } | |
1933 | } | |
1934 | #endif | |
dfe7f3ac | 1935 | DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n", |
7393af7c PM |
1936 | last_sig)); |
1937 | } | |
1938 | ||
1939 | last_sig = TARGET_SIGNAL_0; | |
24e60978 | 1940 | |
3cee93ac CF |
1941 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", |
1942 | pid, step, sig)); | |
1943 | ||
1944 | /* Get context for currently selected thread */ | |
1945 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1946 | if (th) |
24e60978 | 1947 | { |
450005e7 CF |
1948 | if (step) |
1949 | { | |
1950 | /* Single step by setting t bit */ | |
1951 | child_fetch_inferior_registers (PS_REGNUM); | |
1952 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1953 | } | |
24e60978 | 1954 | |
450005e7 CF |
1955 | if (th->context.ContextFlags) |
1956 | { | |
caad7706 CF |
1957 | if (debug_registers_changed) |
1958 | { | |
1959 | th->context.Dr0 = dr[0]; | |
1960 | th->context.Dr1 = dr[1]; | |
1961 | th->context.Dr2 = dr[2]; | |
1962 | th->context.Dr3 = dr[3]; | |
1963 | /* th->context.Dr6 = dr[6]; | |
1964 | FIXME: should we set dr6 also ?? */ | |
1965 | th->context.Dr7 = dr[7]; | |
1966 | } | |
450005e7 CF |
1967 | CHECK (SetThreadContext (th->h, &th->context)); |
1968 | th->context.ContextFlags = 0; | |
1969 | } | |
24e60978 SC |
1970 | } |
1971 | ||
3cee93ac CF |
1972 | /* Allow continuing with the same signal that interrupted us. |
1973 | Otherwise complain. */ | |
24e60978 | 1974 | |
8a892701 | 1975 | child_continue (continue_status, pid); |
24e60978 SC |
1976 | } |
1977 | ||
1978 | static void | |
fba45db2 | 1979 | child_prepare_to_store (void) |
24e60978 SC |
1980 | { |
1981 | /* Do nothing, since we can store individual regs */ | |
1982 | } | |
1983 | ||
1984 | static int | |
fba45db2 | 1985 | child_can_run (void) |
24e60978 SC |
1986 | { |
1987 | return 1; | |
1988 | } | |
1989 | ||
1990 | static void | |
0a65a603 | 1991 | child_close (int x) |
24e60978 | 1992 | { |
39f77062 | 1993 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
3bccec63 | 1994 | PIDGET (inferior_ptid))); |
24e60978 | 1995 | } |
1ef980b9 | 1996 | |
3a4b77d8 | 1997 | struct target_ops child_ops; |
c719b714 | 1998 | |
3a4b77d8 JM |
1999 | static void |
2000 | init_child_ops (void) | |
24e60978 | 2001 | { |
3a4b77d8 JM |
2002 | child_ops.to_shortname = "child"; |
2003 | child_ops.to_longname = "Win32 child process"; | |
2004 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
2005 | child_ops.to_open = child_open; | |
2006 | child_ops.to_close = child_close; | |
2007 | child_ops.to_attach = child_attach; | |
2008 | child_ops.to_detach = child_detach; | |
2009 | child_ops.to_resume = child_resume; | |
2010 | child_ops.to_wait = child_wait; | |
2011 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
2012 | child_ops.to_store_registers = child_store_inferior_registers; | |
2013 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
2014 | child_ops.to_xfer_memory = child_xfer_memory; | |
2015 | child_ops.to_files_info = child_files_info; | |
2016 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
2017 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
2018 | child_ops.to_terminal_init = terminal_init_inferior; | |
2019 | child_ops.to_terminal_inferior = terminal_inferior; | |
2020 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
2021 | child_ops.to_terminal_ours = terminal_ours; | |
a790ad35 | 2022 | child_ops.to_terminal_save_ours = terminal_save_ours; |
3a4b77d8 JM |
2023 | child_ops.to_terminal_info = child_terminal_info; |
2024 | child_ops.to_kill = child_kill_inferior; | |
3a4b77d8 JM |
2025 | child_ops.to_create_inferior = child_create_inferior; |
2026 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
2027 | child_ops.to_can_run = child_can_run; | |
3a4b77d8 | 2028 | child_ops.to_thread_alive = win32_child_thread_alive; |
d3a09475 | 2029 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
3a4b77d8 JM |
2030 | child_ops.to_stop = child_stop; |
2031 | child_ops.to_stratum = process_stratum; | |
3a4b77d8 JM |
2032 | child_ops.to_has_all_memory = 1; |
2033 | child_ops.to_has_memory = 1; | |
2034 | child_ops.to_has_stack = 1; | |
2035 | child_ops.to_has_registers = 1; | |
2036 | child_ops.to_has_execution = 1; | |
3a4b77d8 | 2037 | child_ops.to_magic = OPS_MAGIC; |
c719b714 | 2038 | } |
24e60978 SC |
2039 | |
2040 | void | |
a6b6b089 | 2041 | _initialize_win32_nat (void) |
24e60978 | 2042 | { |
fa58ee11 EZ |
2043 | struct cmd_list_element *c; |
2044 | ||
3a4b77d8 | 2045 | init_child_ops (); |
1ef980b9 | 2046 | |
fa58ee11 EZ |
2047 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
2048 | "Load dll library symbols from FILE."); | |
5ba2abeb | 2049 | set_cmd_completer (c, filename_completer); |
450005e7 CF |
2050 | |
2051 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
2052 | ||
dfe7f3ac CF |
2053 | add_show_from_set (add_set_cmd ("shell", class_support, var_boolean, |
2054 | (char *) &useshell, | |
2055 | "Set use of shell to start subprocess.", | |
2056 | &setlist), | |
2057 | &showlist); | |
2058 | ||
450005e7 | 2059 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, |
8e860359 CF |
2060 | (char *) &new_console, |
2061 | "Set creation of new console when creating child process.", | |
2062 | &setlist), | |
2063 | &showlist); | |
24e60978 | 2064 | |
450005e7 | 2065 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
2066 | (char *) &new_group, |
2067 | "Set creation of new group when creating child process.", | |
2068 | &setlist), | |
2069 | &showlist); | |
24e60978 | 2070 | |
450005e7 | 2071 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
2072 | (char *) &debug_exec, |
2073 | "Set whether to display execution in child process.", | |
2074 | &setlist), | |
2075 | &showlist); | |
1ef980b9 | 2076 | |
450005e7 | 2077 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
2078 | (char *) &debug_events, |
2079 | "Set whether to display kernel events in child process.", | |
2080 | &setlist), | |
2081 | &showlist); | |
1ef980b9 | 2082 | |
450005e7 | 2083 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
2084 | (char *) &debug_memory, |
2085 | "Set whether to display memory accesses in child process.", | |
2086 | &setlist), | |
2087 | &showlist); | |
1ef980b9 | 2088 | |
450005e7 | 2089 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
2090 | (char *) &debug_exceptions, |
2091 | "Set whether to display kernel exceptions in child process.", | |
2092 | &setlist), | |
2093 | &showlist); | |
1ef980b9 | 2094 | |
450005e7 CF |
2095 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
2096 | add_info_alias ("sharedlibrary", "dll", 1); | |
2097 | ||
c1748f97 | 2098 | add_prefix_cmd ("w32", class_info, info_w32_command, |
baa93fa6 CF |
2099 | "Print information specific to Win32 debugging.", |
2100 | &info_w32_cmdlist, "info w32 ", 0, &infolist); | |
c1748f97 PM |
2101 | |
2102 | add_cmd ("selector", class_info, display_selectors, | |
baa93fa6 | 2103 | "Display selectors infos.", |
c1748f97 PM |
2104 | &info_w32_cmdlist); |
2105 | ||
24e60978 SC |
2106 | add_target (&child_ops); |
2107 | } | |
3cee93ac | 2108 | |
fa4ba8da PM |
2109 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
2110 | ||
2111 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
2112 | Here we just store the address in dr array, the registers will be | |
2113 | actually set up when child_continue is called. */ | |
2114 | void | |
2115 | cygwin_set_dr (int i, CORE_ADDR addr) | |
2116 | { | |
2117 | if (i < 0 || i > 3) | |
2118 | internal_error (__FILE__, __LINE__, | |
2119 | "Invalid register %d in cygwin_set_dr.\n", i); | |
2120 | dr[i] = (unsigned) addr; | |
2121 | debug_registers_changed = 1; | |
2122 | debug_registers_used = 1; | |
2123 | } | |
2124 | ||
2125 | /* Pass the value VAL to the inferior in the DR7 debug control | |
2126 | register. Here we just store the address in D_REGS, the watchpoint | |
2127 | will be actually set up in child_wait. */ | |
2128 | void | |
2129 | cygwin_set_dr7 (unsigned val) | |
2130 | { | |
2131 | dr[7] = val; | |
2132 | debug_registers_changed = 1; | |
2133 | debug_registers_used = 1; | |
2134 | } | |
2135 | ||
2136 | /* Get the value of the DR6 debug status register from the inferior. | |
2137 | Here we just return the value stored in dr[6] | |
2138 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
2139 | unsigned | |
2140 | cygwin_get_dr6 (void) | |
2141 | { | |
2142 | return dr[6]; | |
2143 | } | |
2144 | ||
2145 | ||
3cee93ac CF |
2146 | /* Determine if the thread referenced by "pid" is alive |
2147 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
2148 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
2149 | static int | |
39f77062 | 2150 | win32_child_thread_alive (ptid_t ptid) |
3cee93ac | 2151 | { |
39f77062 KB |
2152 | int pid = PIDGET (ptid); |
2153 | ||
3a4b77d8 JM |
2154 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
2155 | FALSE : TRUE; | |
3cee93ac CF |
2156 | } |
2157 | ||
2158 | /* Convert pid to printable format. */ | |
2159 | char * | |
39f77062 | 2160 | cygwin_pid_to_str (ptid_t ptid) |
3cee93ac CF |
2161 | { |
2162 | static char buf[80]; | |
39f77062 KB |
2163 | int pid = PIDGET (ptid); |
2164 | ||
29fe111d | 2165 | if ((DWORD) pid == current_event.dwProcessId) |
b69571f5 | 2166 | sprintf (buf, "process %d", pid); |
3cee93ac | 2167 | else |
b69571f5 | 2168 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
3cee93ac CF |
2169 | return buf; |
2170 | } | |
8e860359 CF |
2171 | |
2172 | static int | |
2173 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
2174 | { | |
2175 | struct objfile *objfile; | |
2176 | char *objfile_basename; | |
2177 | const char *dll_basename; | |
2178 | ||
2179 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
2180 | dll_basename = dll_name; | |
2181 | else | |
2182 | dll_basename++; | |
2183 | ||
2184 | ALL_OBJFILES (objfile) | |
2185 | { | |
2186 | objfile_basename = strrchr (objfile->name, '/'); | |
2187 | ||
2188 | if (objfile_basename && | |
2189 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
2190 | { | |
2191 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
2192 | base_addr, dll_name); | |
2193 | goto out; | |
2194 | } | |
2195 | } | |
2196 | ||
2197 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 2198 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
2199 | |
2200 | out: | |
2201 | return 1; | |
2202 | } | |
2203 | ||
2204 | typedef struct | |
2205 | { | |
2206 | struct target_ops *target; | |
2207 | bfd_vma addr; | |
9f476a01 | 2208 | } map_code_section_args; |
8e860359 CF |
2209 | |
2210 | static void | |
554cb486 | 2211 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
2212 | { |
2213 | int old; | |
2214 | int update_coreops; | |
2215 | struct section_table *new_target_sect_ptr; | |
2216 | ||
2217 | map_code_section_args *args = (map_code_section_args *) obj; | |
2218 | struct target_ops *target = args->target; | |
2219 | if (sect->flags & SEC_CODE) | |
2220 | { | |
2221 | update_coreops = core_ops.to_sections == target->to_sections; | |
2222 | ||
2223 | if (target->to_sections) | |
2224 | { | |
2225 | old = target->to_sections_end - target->to_sections; | |
2226 | target->to_sections = (struct section_table *) | |
2227 | xrealloc ((char *) target->to_sections, | |
2228 | (sizeof (struct section_table)) * (1 + old)); | |
2229 | } | |
2230 | else | |
2231 | { | |
2232 | old = 0; | |
2233 | target->to_sections = (struct section_table *) | |
2234 | xmalloc ((sizeof (struct section_table))); | |
2235 | } | |
2236 | target->to_sections_end = target->to_sections + (1 + old); | |
2237 | ||
2238 | /* Update the to_sections field in the core_ops structure | |
3bccec63 | 2239 | if needed. */ |
8e860359 CF |
2240 | if (update_coreops) |
2241 | { | |
2242 | core_ops.to_sections = target->to_sections; | |
2243 | core_ops.to_sections_end = target->to_sections_end; | |
2244 | } | |
2245 | new_target_sect_ptr = target->to_sections + old; | |
2246 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
2247 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
2248 | bfd_section_size (abfd, sect);; | |
2249 | new_target_sect_ptr->the_bfd_section = sect; | |
2250 | new_target_sect_ptr->bfd = abfd; | |
2251 | } | |
2252 | } | |
2253 | ||
2254 | static int | |
2255 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
2256 | { | |
2257 | bfd *dll_bfd; | |
2258 | map_code_section_args map_args; | |
2259 | asection *lowest_sect; | |
2260 | char *name; | |
2261 | if (dll_name == NULL || target == NULL) | |
2262 | return 0; | |
66ed1d85 | 2263 | name = xstrdup (dll_name); |
8e860359 CF |
2264 | dll_bfd = bfd_openr (name, "pei-i386"); |
2265 | if (dll_bfd == NULL) | |
2266 | return 0; | |
2267 | ||
2268 | if (bfd_check_format (dll_bfd, bfd_object)) | |
2269 | { | |
2270 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
2271 | if (lowest_sect == NULL) | |
2272 | return 0; | |
2273 | map_args.target = target; | |
2274 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
2275 | ||
554cb486 | 2276 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
2277 | } |
2278 | ||
2279 | return 1; | |
2280 | } | |
2281 | ||
2282 | static void | |
554cb486 | 2283 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
2284 | { |
2285 | struct target_ops *target = (struct target_ops *) obj; | |
2286 | ||
2287 | DWORD base_addr; | |
2288 | ||
2289 | int dll_name_size; | |
2290 | char *dll_name = NULL; | |
2291 | char *buf = NULL; | |
2292 | struct win32_pstatus *pstatus; | |
2293 | char *p; | |
2294 | ||
2295 | if (strncmp (sect->name, ".module", 7)) | |
2296 | return; | |
2297 | ||
2298 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
2299 | if (!buf) | |
2300 | { | |
2301 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
2302 | goto out; | |
2303 | } | |
2304 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
2305 | goto out; | |
2306 | ||
2307 | pstatus = (struct win32_pstatus *) buf; | |
2308 | ||
2309 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
2310 | dll_name_size = pstatus->data.module_info.module_name_size; | |
2311 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
2312 | goto out; | |
2313 | ||
2314 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
2315 | if (!dll_name) | |
2316 | { | |
2317 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
2318 | goto out; | |
2319 | } | |
2320 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
2321 | ||
2322 | while ((p = strchr (dll_name, '\\'))) | |
2323 | *p = '/'; | |
2324 | ||
2325 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
2326 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
2327 | ||
2328 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
2329 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
2330 | ||
2331 | out: | |
2332 | if (buf) | |
b8c9b27d | 2333 | xfree (buf); |
8e860359 | 2334 | if (dll_name) |
b8c9b27d | 2335 | xfree (dll_name); |
8e860359 CF |
2336 | return; |
2337 | } | |
2338 | ||
2339 | void | |
0a65a603 AC |
2340 | child_solib_add (char *filename, int from_tty, struct target_ops *target, |
2341 | int readsyms) | |
8e860359 | 2342 | { |
990f9fe3 FF |
2343 | if (!readsyms) |
2344 | return; | |
8e860359 CF |
2345 | if (core_bfd) |
2346 | { | |
2347 | child_clear_solibs (); | |
2348 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
2349 | } | |
2350 | else | |
2351 | { | |
2352 | if (solib_end && solib_end->name) | |
d3ff4a77 | 2353 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
3bccec63 | 2354 | solib_end->load_addr); |
8e860359 CF |
2355 | } |
2356 | } | |
2357 | ||
2358 | static void | |
2359 | fetch_elf_core_registers (char *core_reg_sect, | |
2360 | unsigned core_reg_size, | |
2361 | int which, | |
2362 | CORE_ADDR reg_addr) | |
2363 | { | |
2364 | int r; | |
2365 | if (core_reg_size < sizeof (CONTEXT)) | |
2366 | { | |
2367 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
2368 | return; | |
2369 | } | |
2370 | for (r = 0; r < NUM_REGS; r++) | |
2371 | supply_register (r, core_reg_sect + mappings[r]); | |
2372 | } | |
2373 | ||
2374 | static struct core_fns win32_elf_core_fns = | |
2375 | { | |
2376 | bfd_target_elf_flavour, | |
2377 | default_check_format, | |
2378 | default_core_sniffer, | |
2379 | fetch_elf_core_registers, | |
2380 | NULL | |
2381 | }; | |
2382 | ||
2383 | void | |
0613c401 | 2384 | _initialize_core_win32 (void) |
8e860359 CF |
2385 | { |
2386 | add_core_fns (&win32_elf_core_fns); | |
2387 | } | |
2a3d5645 CF |
2388 | |
2389 | void | |
2390 | _initialize_check_for_gdb_ini (void) | |
2391 | { | |
2392 | char *homedir; | |
2393 | if (inhibit_gdbinit) | |
2394 | return; | |
2395 | ||
2396 | homedir = getenv ("HOME"); | |
2397 | if (homedir) | |
2398 | { | |
2399 | char *p; | |
2400 | char *oldini = (char *) alloca (strlen (homedir) + | |
2401 | sizeof ("/gdb.ini")); | |
2402 | strcpy (oldini, homedir); | |
2403 | p = strchr (oldini, '\0'); | |
2404 | if (p > oldini && p[-1] != '/') | |
2405 | *p++ = '/'; | |
2406 | strcpy (p, "gdb.ini"); | |
2407 | if (access (oldini, 0) == 0) | |
2408 | { | |
2409 | int len = strlen (oldini); | |
2410 | char *newini = alloca (len + 1); | |
dfe7f3ac | 2411 | sprintf (newini, "%.*s.gdbinit", |
58fa08f0 | 2412 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
2a3d5645 CF |
2413 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); |
2414 | } | |
2415 | } | |
2416 | } |