Commit | Line | Data |
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24e60978 | 1 | /* Target-vector operations for controlling win32 child processes, for GDB. |
0a65a603 AC |
2 | |
3 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free | |
4 | Software Foundation, Inc. | |
5 | ||
e6433c28 | 6 | Contributed by Cygnus Solutions, A Red Hat Company. |
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 | 29 | #include "defs.h" |
97da3b20 | 30 | #include "tm.h" /* required for SSE registers */ |
24e60978 SC |
31 | #include "frame.h" /* required by inferior.h */ |
32 | #include "inferior.h" | |
33 | #include "target.h" | |
24e60978 SC |
34 | #include "gdbcore.h" |
35 | #include "command.h" | |
fa58ee11 | 36 | #include "completer.h" |
4e052eda | 37 | #include "regcache.h" |
2a3d5645 | 38 | #include "top.h" |
c25b74ac | 39 | #include "i386-tdep.h" |
24e60978 SC |
40 | #include <signal.h> |
41 | #include <sys/types.h> | |
42 | #include <fcntl.h> | |
cad9cd60 | 43 | #include <stdlib.h> |
cad9cd60 | 44 | #include <windows.h> |
1e37c281 | 45 | #include <imagehlp.h> |
29fe111d | 46 | #include <sys/cygwin.h> |
cad9cd60 | 47 | |
24e60978 | 48 | #include "buildsym.h" |
1ef980b9 SC |
49 | #include "symfile.h" |
50 | #include "objfiles.h" | |
24e60978 | 51 | #include "gdb_string.h" |
fdfa3315 | 52 | #include "gdbthread.h" |
24e60978 | 53 | #include "gdbcmd.h" |
1750a5ef | 54 | #include <sys/param.h> |
1e37c281 | 55 | #include <unistd.h> |
24e60978 | 56 | |
0714f9bf | 57 | /* The ui's event loop. */ |
507f3c78 | 58 | extern int (*ui_loop_hook) (int signo); |
0714f9bf SS |
59 | |
60 | /* If we're not using the old Cygwin header file set, define the | |
61 | following which never should have been in the generic Win32 API | |
62 | headers in the first place since they were our own invention... */ | |
63 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 64 | enum |
8e860359 CF |
65 | { |
66 | FLAG_TRACE_BIT = 0x100, | |
67 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
68 | }; | |
0714f9bf | 69 | #endif |
8e860359 CF |
70 | #include <sys/procfs.h> |
71 | #include <psapi.h> | |
0714f9bf | 72 | |
97da3b20 | 73 | #ifdef HAVE_SSE_REGS |
fa4ba8da PM |
74 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
75 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 76 | #else |
fa4ba8da | 77 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS |
97da3b20 CF |
78 | #endif |
79 | ||
fa4ba8da PM |
80 | static unsigned dr[8]; |
81 | static int debug_registers_changed = 0; | |
82 | static int debug_registers_used = 0; | |
97da3b20 | 83 | |
3cee93ac CF |
84 | /* The string sent by cygwin when it processes a signal. |
85 | FIXME: This should be in a cygwin include file. */ | |
86 | #define CYGWIN_SIGNAL_STRING "cygwin: signal" | |
87 | ||
29fe111d | 88 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 89 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
90 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
91 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
92 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 SC |
93 | |
94 | /* Forward declaration */ | |
95 | extern struct target_ops child_ops; | |
96 | ||
a14ed312 | 97 | static void child_stop (void); |
39f77062 | 98 | static int win32_child_thread_alive (ptid_t); |
a14ed312 | 99 | void child_kill_inferior (void); |
3cee93ac | 100 | |
7393af7c PM |
101 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
102 | /* Set if a signal was received from the debugged process */ | |
103 | ||
3cee93ac CF |
104 | /* Thread information structure used to track information that is |
105 | not available in gdb's thread structure. */ | |
106 | typedef struct thread_info_struct | |
3a4b77d8 JM |
107 | { |
108 | struct thread_info_struct *next; | |
109 | DWORD id; | |
110 | HANDLE h; | |
111 | char *name; | |
112 | int suspend_count; | |
113 | CONTEXT context; | |
1e37c281 | 114 | STACKFRAME sf; |
8e860359 CF |
115 | } |
116 | thread_info; | |
1e37c281 | 117 | |
29fe111d | 118 | static thread_info thread_head; |
24e60978 | 119 | |
24e60978 SC |
120 | /* The process and thread handles for the above context. */ |
121 | ||
3cee93ac CF |
122 | static DEBUG_EVENT current_event; /* The current debug event from |
123 | WaitForDebugEvent */ | |
124 | static HANDLE current_process_handle; /* Currently executing process */ | |
125 | static thread_info *current_thread; /* Info on currently selected thread */ | |
3a4b77d8 | 126 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
127 | |
128 | /* Counts of things. */ | |
129 | static int exception_count = 0; | |
130 | static int event_count = 0; | |
dfe7f3ac | 131 | static int saw_create; |
24e60978 SC |
132 | |
133 | /* User options. */ | |
134 | static int new_console = 0; | |
1e37c281 | 135 | static int new_group = 1; |
dfe7f3ac CF |
136 | static int debug_exec = 0; /* show execution */ |
137 | static int debug_events = 0; /* show events from kernel */ | |
138 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 139 | static int debug_exceptions = 0; /* show target exceptions */ |
dfe7f3ac CF |
140 | static int useshell = 0; /* use shell for subprocesses */ |
141 | ||
142 | /* Path to shell */ | |
143 | static char shell[MAX_PATH + 1]; | |
24e60978 SC |
144 | |
145 | /* This vector maps GDB's idea of a register's number into an address | |
3cee93ac | 146 | in the win32 exception context vector. |
24e60978 | 147 | |
3cee93ac | 148 | It also contains the bit mask needed to load the register in question. |
24e60978 SC |
149 | |
150 | One day we could read a reg, we could inspect the context we | |
151 | already have loaded, if it doesn't have the bit set that we need, | |
152 | we read that set of registers in using GetThreadContext. If the | |
153 | context already contains what we need, we just unpack it. Then to | |
154 | write a register, first we have to ensure that the context contains | |
155 | the other regs of the group, and then we copy the info in and set | |
156 | out bit. */ | |
157 | ||
3cee93ac CF |
158 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) |
159 | static const int mappings[] = | |
24e60978 | 160 | { |
3a4b77d8 JM |
161 | context_offset (Eax), |
162 | context_offset (Ecx), | |
163 | context_offset (Edx), | |
164 | context_offset (Ebx), | |
165 | context_offset (Esp), | |
166 | context_offset (Ebp), | |
167 | context_offset (Esi), | |
168 | context_offset (Edi), | |
169 | context_offset (Eip), | |
170 | context_offset (EFlags), | |
171 | context_offset (SegCs), | |
172 | context_offset (SegSs), | |
173 | context_offset (SegDs), | |
174 | context_offset (SegEs), | |
175 | context_offset (SegFs), | |
176 | context_offset (SegGs), | |
177 | context_offset (FloatSave.RegisterArea[0 * 10]), | |
178 | context_offset (FloatSave.RegisterArea[1 * 10]), | |
179 | context_offset (FloatSave.RegisterArea[2 * 10]), | |
180 | context_offset (FloatSave.RegisterArea[3 * 10]), | |
181 | context_offset (FloatSave.RegisterArea[4 * 10]), | |
182 | context_offset (FloatSave.RegisterArea[5 * 10]), | |
183 | context_offset (FloatSave.RegisterArea[6 * 10]), | |
184 | context_offset (FloatSave.RegisterArea[7 * 10]), | |
1e37c281 JM |
185 | context_offset (FloatSave.ControlWord), |
186 | context_offset (FloatSave.StatusWord), | |
187 | context_offset (FloatSave.TagWord), | |
188 | context_offset (FloatSave.ErrorSelector), | |
189 | context_offset (FloatSave.ErrorOffset), | |
190 | context_offset (FloatSave.DataSelector), | |
191 | context_offset (FloatSave.DataOffset), | |
d3a09475 | 192 | context_offset (FloatSave.ErrorSelector) |
97da3b20 CF |
193 | #ifdef HAVE_SSE_REGS |
194 | /* XMM0-7 */ , | |
441532d7 PM |
195 | context_offset (ExtendedRegisters[10*16]), |
196 | context_offset (ExtendedRegisters[11*16]), | |
197 | context_offset (ExtendedRegisters[12*16]), | |
198 | context_offset (ExtendedRegisters[13*16]), | |
199 | context_offset (ExtendedRegisters[14*16]), | |
200 | context_offset (ExtendedRegisters[15*16]), | |
201 | context_offset (ExtendedRegisters[16*16]), | |
202 | context_offset (ExtendedRegisters[17*16]), | |
203 | /* MXCSR */ | |
204 | context_offset (ExtendedRegisters[24]) | |
97da3b20 | 205 | #endif |
24e60978 SC |
206 | }; |
207 | ||
d3a09475 JM |
208 | #undef context_offset |
209 | ||
24e60978 SC |
210 | /* This vector maps the target's idea of an exception (extracted |
211 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
212 | ||
213 | struct xlate_exception | |
214 | { | |
215 | int them; | |
216 | enum target_signal us; | |
217 | }; | |
218 | ||
24e60978 SC |
219 | static const struct xlate_exception |
220 | xlate[] = | |
221 | { | |
222 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 223 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
224 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
225 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
226 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
7393af7c | 227 | {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE}, |
24e60978 SC |
228 | {-1, -1}}; |
229 | ||
fa4ba8da PM |
230 | static void |
231 | check (BOOL ok, const char *file, int line) | |
232 | { | |
233 | if (!ok) | |
dfe7f3ac | 234 | printf_filtered ("error return %s:%d was %lu\n", file, line, |
fa4ba8da PM |
235 | GetLastError ()); |
236 | } | |
237 | ||
238 | ||
3cee93ac CF |
239 | /* Find a thread record given a thread id. |
240 | If get_context then also retrieve the context for this | |
241 | thread. */ | |
242 | static thread_info * | |
243 | thread_rec (DWORD id, int get_context) | |
24e60978 | 244 | { |
3cee93ac CF |
245 | thread_info *th; |
246 | ||
3a4b77d8 | 247 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
248 | if (th->id == id) |
249 | { | |
250 | if (!th->suspend_count && get_context) | |
251 | { | |
8a892701 | 252 | if (get_context > 0 && id != current_event.dwThreadId) |
3cee93ac CF |
253 | th->suspend_count = SuspendThread (th->h) + 1; |
254 | else if (get_context < 0) | |
255 | th->suspend_count = -1; | |
256 | ||
97da3b20 | 257 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
3cee93ac | 258 | GetThreadContext (th->h, &th->context); |
fa4ba8da PM |
259 | if (id == current_event.dwThreadId) |
260 | { | |
261 | /* Copy dr values from that thread. */ | |
262 | dr[0] = th->context.Dr0; | |
263 | dr[1] = th->context.Dr1; | |
264 | dr[2] = th->context.Dr2; | |
265 | dr[3] = th->context.Dr3; | |
266 | dr[6] = th->context.Dr6; | |
267 | dr[7] = th->context.Dr7; | |
268 | } | |
3cee93ac CF |
269 | } |
270 | return th; | |
271 | } | |
272 | ||
273 | return NULL; | |
274 | } | |
275 | ||
276 | /* Add a thread to the thread list */ | |
277 | static thread_info * | |
3a4b77d8 | 278 | child_add_thread (DWORD id, HANDLE h) |
3cee93ac CF |
279 | { |
280 | thread_info *th; | |
281 | ||
282 | if ((th = thread_rec (id, FALSE))) | |
283 | return th; | |
284 | ||
285 | th = (thread_info *) xmalloc (sizeof (*th)); | |
3a4b77d8 | 286 | memset (th, 0, sizeof (*th)); |
3cee93ac CF |
287 | th->id = id; |
288 | th->h = h; | |
289 | th->next = thread_head.next; | |
290 | thread_head.next = th; | |
39f77062 | 291 | add_thread (pid_to_ptid (id)); |
dfe7f3ac | 292 | /* Set the debug registers for the new thread in they are used. */ |
fa4ba8da PM |
293 | if (debug_registers_used) |
294 | { | |
295 | /* Only change the value of the debug registers. */ | |
296 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
297 | CHECK (GetThreadContext (th->h, &th->context)); | |
298 | th->context.Dr0 = dr[0]; | |
299 | th->context.Dr1 = dr[1]; | |
300 | th->context.Dr2 = dr[2]; | |
301 | th->context.Dr3 = dr[3]; | |
302 | /* th->context.Dr6 = dr[6]; | |
303 | FIXME: should we set dr6 also ?? */ | |
304 | th->context.Dr7 = dr[7]; | |
305 | CHECK (SetThreadContext (th->h, &th->context)); | |
306 | th->context.ContextFlags = 0; | |
307 | } | |
3cee93ac | 308 | return th; |
24e60978 SC |
309 | } |
310 | ||
3cee93ac CF |
311 | /* Clear out any old thread list and reintialize it to a |
312 | pristine state. */ | |
24e60978 | 313 | static void |
fba45db2 | 314 | child_init_thread_list (void) |
24e60978 | 315 | { |
3cee93ac CF |
316 | thread_info *th = &thread_head; |
317 | ||
318 | DEBUG_EVENTS (("gdb: child_init_thread_list\n")); | |
319 | init_thread_list (); | |
320 | while (th->next != NULL) | |
24e60978 | 321 | { |
3cee93ac CF |
322 | thread_info *here = th->next; |
323 | th->next = here->next; | |
324 | (void) CloseHandle (here->h); | |
b8c9b27d | 325 | xfree (here); |
24e60978 | 326 | } |
3cee93ac CF |
327 | } |
328 | ||
329 | /* Delete a thread from the list of threads */ | |
330 | static void | |
331 | child_delete_thread (DWORD id) | |
332 | { | |
333 | thread_info *th; | |
334 | ||
335 | if (info_verbose) | |
39f77062 KB |
336 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id))); |
337 | delete_thread (pid_to_ptid (id)); | |
3cee93ac CF |
338 | |
339 | for (th = &thread_head; | |
340 | th->next != NULL && th->next->id != id; | |
341 | th = th->next) | |
342 | continue; | |
343 | ||
344 | if (th->next != NULL) | |
24e60978 | 345 | { |
3cee93ac CF |
346 | thread_info *here = th->next; |
347 | th->next = here->next; | |
348 | CloseHandle (here->h); | |
b8c9b27d | 349 | xfree (here); |
24e60978 SC |
350 | } |
351 | } | |
352 | ||
3cee93ac CF |
353 | static void |
354 | do_child_fetch_inferior_registers (int r) | |
24e60978 | 355 | { |
1e37c281 JM |
356 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
357 | long l; | |
358 | if (r == FCS_REGNUM) | |
359 | { | |
8e860359 | 360 | l = *((long *) context_offset) & 0xffff; |
1e37c281 JM |
361 | supply_register (r, (char *) &l); |
362 | } | |
363 | else if (r == FOP_REGNUM) | |
364 | { | |
8e860359 | 365 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
1e37c281 JM |
366 | supply_register (r, (char *) &l); |
367 | } | |
368 | else if (r >= 0) | |
d3a09475 | 369 | supply_register (r, context_offset); |
3cee93ac | 370 | else |
24e60978 SC |
371 | { |
372 | for (r = 0; r < NUM_REGS; r++) | |
3cee93ac | 373 | do_child_fetch_inferior_registers (r); |
24e60978 | 374 | } |
3cee93ac CF |
375 | } |
376 | ||
377 | static void | |
378 | child_fetch_inferior_registers (int r) | |
379 | { | |
39f77062 | 380 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
3cee93ac CF |
381 | do_child_fetch_inferior_registers (r); |
382 | } | |
383 | ||
384 | static void | |
385 | do_child_store_inferior_registers (int r) | |
386 | { | |
387 | if (r >= 0) | |
388 | read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]); | |
24e60978 SC |
389 | else |
390 | { | |
3cee93ac CF |
391 | for (r = 0; r < NUM_REGS; r++) |
392 | do_child_store_inferior_registers (r); | |
24e60978 SC |
393 | } |
394 | } | |
395 | ||
3cee93ac CF |
396 | /* Store a new register value into the current thread context */ |
397 | static void | |
398 | child_store_inferior_registers (int r) | |
399 | { | |
39f77062 | 400 | current_thread = thread_rec (PIDGET (inferior_ptid), TRUE); |
3cee93ac CF |
401 | do_child_store_inferior_registers (r); |
402 | } | |
24e60978 | 403 | |
1e37c281 JM |
404 | static int psapi_loaded = 0; |
405 | static HMODULE psapi_module_handle = NULL; | |
8e860359 CF |
406 | static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL; |
407 | static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL; | |
408 | static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL; | |
1e37c281 | 409 | |
3bccec63 | 410 | int |
8e860359 | 411 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
1e37c281 JM |
412 | { |
413 | DWORD len; | |
414 | MODULEINFO mi; | |
415 | int i; | |
8e860359 CF |
416 | HMODULE dh_buf[1]; |
417 | HMODULE *DllHandle = dh_buf; | |
1e37c281 JM |
418 | DWORD cbNeeded; |
419 | BOOL ok; | |
420 | ||
421 | if (!psapi_loaded || | |
8e860359 CF |
422 | psapi_EnumProcessModules == NULL || |
423 | psapi_GetModuleInformation == NULL || | |
424 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 | 425 | { |
8e860359 CF |
426 | if (psapi_loaded) |
427 | goto failed; | |
1e37c281 JM |
428 | psapi_loaded = 1; |
429 | psapi_module_handle = LoadLibrary ("psapi.dll"); | |
430 | if (!psapi_module_handle) | |
8e860359 CF |
431 | { |
432 | /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */ | |
433 | goto failed; | |
434 | } | |
435 | psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules"); | |
1e37c281 JM |
436 | psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation"); |
437 | psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, | |
8e860359 CF |
438 | "GetModuleFileNameExA"); |
439 | if (psapi_EnumProcessModules == NULL || | |
440 | psapi_GetModuleInformation == NULL || | |
441 | psapi_GetModuleFileNameExA == NULL) | |
1e37c281 JM |
442 | goto failed; |
443 | } | |
444 | ||
445 | cbNeeded = 0; | |
446 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
447 | DllHandle, |
448 | sizeof (HMODULE), | |
449 | &cbNeeded); | |
1e37c281 JM |
450 | |
451 | if (!ok || !cbNeeded) | |
452 | goto failed; | |
453 | ||
8e860359 | 454 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
455 | if (!DllHandle) |
456 | goto failed; | |
457 | ||
458 | ok = (*psapi_EnumProcessModules) (current_process_handle, | |
8e860359 CF |
459 | DllHandle, |
460 | cbNeeded, | |
461 | &cbNeeded); | |
1e37c281 JM |
462 | if (!ok) |
463 | goto failed; | |
464 | ||
29fe111d | 465 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 JM |
466 | { |
467 | if (!(*psapi_GetModuleInformation) (current_process_handle, | |
8e860359 CF |
468 | DllHandle[i], |
469 | &mi, | |
470 | sizeof (mi))) | |
1e37c281 JM |
471 | error ("Can't get module info"); |
472 | ||
473 | len = (*psapi_GetModuleFileNameExA) (current_process_handle, | |
8e860359 CF |
474 | DllHandle[i], |
475 | dll_name_ret, | |
476 | MAX_PATH); | |
1e37c281 | 477 | if (len == 0) |
29fe111d | 478 | error ("Error getting dll name: %u\n", GetLastError ()); |
1e37c281 JM |
479 | |
480 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
481 | return 1; | |
482 | } | |
483 | ||
484 | failed: | |
485 | dll_name_ret[0] = '\0'; | |
486 | return 0; | |
487 | } | |
488 | ||
450005e7 CF |
489 | /* Encapsulate the information required in a call to |
490 | symbol_file_add_args */ | |
8a892701 CF |
491 | struct safe_symbol_file_add_args |
492 | { | |
493 | char *name; | |
494 | int from_tty; | |
495 | struct section_addr_info *addrs; | |
496 | int mainline; | |
497 | int flags; | |
7c5c87c0 | 498 | struct ui_file *err, *out; |
8a892701 CF |
499 | struct objfile *ret; |
500 | }; | |
501 | ||
02e423b9 CF |
502 | /* Maintain a linked list of "so" information. */ |
503 | struct so_stuff | |
504 | { | |
d3ff4a77 | 505 | struct so_stuff *next; |
02e423b9 | 506 | DWORD load_addr; |
7470a420 | 507 | int loaded; |
d3ff4a77 | 508 | struct objfile *objfile; |
7470a420 CF |
509 | char name[1]; |
510 | } solib_start, *solib_end; | |
02e423b9 | 511 | |
450005e7 CF |
512 | /* Call symbol_file_add with stderr redirected. We don't care if there |
513 | are errors. */ | |
8a892701 CF |
514 | static int |
515 | safe_symbol_file_add_stub (void *argv) | |
516 | { | |
517 | #define p ((struct safe_symbol_file_add_args *)argv) | |
fefd0a37 | 518 | struct so_stuff *so = &solib_start; |
02e423b9 CF |
519 | |
520 | while ((so = so->next)) | |
7470a420 | 521 | if (so->loaded && strcasecmp (so->name, p->name) == 0) |
02e423b9 | 522 | return 0; |
8a892701 CF |
523 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
524 | return !!p->ret; | |
525 | #undef p | |
526 | } | |
527 | ||
450005e7 | 528 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 529 | static void |
7c5c87c0 | 530 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 531 | { |
8e860359 | 532 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 533 | gdb_flush (gdb_stderr); |
7c5c87c0 | 534 | gdb_flush (gdb_stdout); |
d3ff4a77 | 535 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 536 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 537 | gdb_stderr = sp->err; |
9d3789f7 | 538 | gdb_stdout = sp->out; |
8e860359 | 539 | #undef sp |
8a892701 CF |
540 | } |
541 | ||
450005e7 | 542 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
543 | static struct objfile * |
544 | safe_symbol_file_add (char *name, int from_tty, | |
545 | struct section_addr_info *addrs, | |
546 | int mainline, int flags) | |
8a892701 CF |
547 | { |
548 | struct safe_symbol_file_add_args p; | |
549 | struct cleanup *cleanup; | |
550 | ||
7c5c87c0 | 551 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 552 | |
7c5c87c0 CF |
553 | p.err = gdb_stderr; |
554 | p.out = gdb_stdout; | |
450005e7 | 555 | gdb_flush (gdb_stderr); |
7c5c87c0 | 556 | gdb_flush (gdb_stdout); |
d3ff4a77 | 557 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 558 | gdb_stdout = ui_file_new (); |
8a892701 CF |
559 | p.name = name; |
560 | p.from_tty = from_tty; | |
561 | p.addrs = addrs; | |
562 | p.mainline = mainline; | |
563 | p.flags = flags; | |
564 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
565 | ||
566 | do_cleanups (cleanup); | |
567 | return p.ret; | |
568 | } | |
569 | ||
450005e7 CF |
570 | /* Remember the maximum DLL length for printing in info dll command. */ |
571 | int max_dll_name_len; | |
572 | ||
8e860359 CF |
573 | static void |
574 | register_loaded_dll (const char *name, DWORD load_addr) | |
575 | { | |
576 | struct so_stuff *so; | |
7470a420 | 577 | char ppath[MAX_PATH + 1]; |
3f8ad85b CF |
578 | char buf[MAX_PATH + 1]; |
579 | char cwd[MAX_PATH + 1]; | |
580 | char *p; | |
581 | WIN32_FIND_DATA w32_fd; | |
582 | HANDLE h = FindFirstFile(name, &w32_fd); | |
583 | size_t len; | |
584 | ||
6badb179 CF |
585 | if (h == INVALID_HANDLE_VALUE) |
586 | strcpy (buf, name); | |
587 | else | |
3f8ad85b | 588 | { |
c914e0cc CF |
589 | FindClose (h); |
590 | strcpy (buf, name); | |
591 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
592 | { | |
593 | p = strrchr (buf, '\\'); | |
594 | if (p) | |
595 | p[1] = '\0'; | |
596 | SetCurrentDirectory (buf); | |
597 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
598 | SetCurrentDirectory (cwd); | |
599 | } | |
3f8ad85b CF |
600 | } |
601 | ||
602 | cygwin_conv_to_posix_path (buf, ppath); | |
7470a420 CF |
603 | so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1); |
604 | so->loaded = 0; | |
8e860359 | 605 | so->load_addr = load_addr; |
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 | ||
633 | ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done); | |
634 | ||
635 | /* See if we could read the address of a string, and that the | |
636 | address isn't null. */ | |
637 | ||
638 | if (done != sizeof (address_ptr) || !address_ptr) | |
639 | return NULL; | |
640 | ||
641 | /* Find the length of the string */ | |
642 | do | |
643 | { | |
644 | ReadProcessMemory (h, address_ptr + len * size, &b, size, &done); | |
645 | len++; | |
646 | } | |
647 | while ((b[0] != 0 || b[size - 1] != 0) && done == size); | |
648 | ||
649 | if (!unicode) | |
650 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
651 | else | |
652 | { | |
653 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
654 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
655 | &done); | |
656 | ||
657 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
658 | } | |
659 | ||
660 | return buf; | |
661 | } | |
662 | ||
24e60978 SC |
663 | /* Wait for child to do something. Return pid of child, or -1 in case |
664 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 665 | static int |
0a65a603 | 666 | handle_load_dll (void *dummy) |
24e60978 | 667 | { |
3a4b77d8 | 668 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
3cee93ac | 669 | char dll_buf[MAX_PATH + 1]; |
450005e7 | 670 | char *dll_name = NULL; |
450005e7 | 671 | char *p; |
3cee93ac | 672 | |
3a4b77d8 | 673 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 674 | |
1e37c281 | 675 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) |
8e860359 | 676 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 677 | |
1e37c281 | 678 | dll_name = dll_buf; |
24e60978 | 679 | |
dfe7f3ac CF |
680 | if (*dll_name == '\0') |
681 | dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode); | |
3cee93ac CF |
682 | if (!dll_name) |
683 | return 1; | |
684 | ||
8e860359 | 685 | register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000); |
450005e7 CF |
686 | |
687 | return 1; | |
688 | } | |
689 | ||
d3ff4a77 | 690 | static int |
0a65a603 | 691 | handle_unload_dll (void *dummy) |
d3ff4a77 CF |
692 | { |
693 | DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000; | |
694 | struct so_stuff *so; | |
695 | ||
696 | for (so = &solib_start; so->next != NULL; so = so->next) | |
697 | if (so->next->load_addr == lpBaseOfDll) | |
698 | { | |
699 | struct so_stuff *sodel = so->next; | |
700 | so->next = sodel->next; | |
701 | if (!so->next) | |
702 | solib_end = so; | |
703 | if (sodel->objfile) | |
704 | free_objfile (sodel->objfile); | |
705 | xfree(sodel); | |
706 | return 1; | |
707 | } | |
708 | error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll); | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
450005e7 CF |
713 | /* Return name of last loaded DLL. */ |
714 | char * | |
0a65a603 | 715 | child_solib_loaded_library_pathname (int pid) |
450005e7 | 716 | { |
8e860359 | 717 | return !solib_end || !solib_end->name[0] ? NULL : solib_end->name; |
450005e7 CF |
718 | } |
719 | ||
720 | /* Clear list of loaded DLLs. */ | |
721 | void | |
722 | child_clear_solibs (void) | |
723 | { | |
724 | struct so_stuff *so, *so1 = solib_start.next; | |
725 | ||
726 | while ((so = so1) != NULL) | |
727 | { | |
728 | so1 = so->next; | |
b8c9b27d | 729 | xfree (so); |
450005e7 CF |
730 | } |
731 | ||
732 | solib_start.next = NULL; | |
d3ff4a77 | 733 | solib_start.objfile = NULL; |
450005e7 CF |
734 | solib_end = &solib_start; |
735 | max_dll_name_len = sizeof ("DLL Name") - 1; | |
736 | } | |
737 | ||
738 | /* Add DLL symbol information. */ | |
d3ff4a77 | 739 | static struct objfile * |
02e423b9 | 740 | solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr) |
450005e7 CF |
741 | { |
742 | struct section_addr_info section_addrs; | |
743 | ||
3cee93ac CF |
744 | /* The symbols in a dll are offset by 0x1000, which is the |
745 | the offset from 0 of the first byte in an image - because | |
8a892701 | 746 | of the file header and the section alignment. */ |
3cee93ac | 747 | |
8e860359 | 748 | if (!name || !name[0]) |
d3ff4a77 | 749 | return NULL; |
450005e7 CF |
750 | |
751 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
0aa9cf96 | 752 | section_addrs.other[0].name = ".text"; |
8e860359 | 753 | section_addrs.other[0].addr = load_addr; |
d3ff4a77 | 754 | return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED); |
450005e7 CF |
755 | } |
756 | ||
757 | /* Load DLL symbol info. */ | |
758 | void | |
7470a420 | 759 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 760 | { |
8e860359 | 761 | int n; |
450005e7 | 762 | dont_repeat (); |
8e860359 | 763 | |
450005e7 CF |
764 | if (args == NULL) |
765 | error ("dll-symbols requires a file name"); | |
766 | ||
8e860359 CF |
767 | n = strlen (args); |
768 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
769 | { | |
770 | char *newargs = (char *) alloca (n + 4 + 1); | |
771 | strcpy (newargs, args); | |
772 | strcat (newargs, ".dll"); | |
773 | args = newargs; | |
774 | } | |
775 | ||
7470a420 | 776 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 777 | } |
450005e7 CF |
778 | |
779 | /* List currently loaded DLLs. */ | |
780 | void | |
0a65a603 | 781 | info_dll_command (char *ignore, int from_tty) |
450005e7 CF |
782 | { |
783 | struct so_stuff *so = &solib_start; | |
784 | ||
785 | if (!so->next) | |
786 | return; | |
787 | ||
dfe7f3ac | 788 | printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name"); |
450005e7 | 789 | while ((so = so->next) != NULL) |
7c5c87c0 | 790 | printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr); |
450005e7 CF |
791 | |
792 | return; | |
24e60978 SC |
793 | } |
794 | ||
3cee93ac CF |
795 | /* Handle DEBUG_STRING output from child process. |
796 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
797 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
798 | static int | |
799 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
800 | { | |
801 | char *s; | |
802 | int gotasig = FALSE; | |
803 | ||
804 | if (!target_read_string | |
3a4b77d8 | 805 | ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0) |
3cee93ac CF |
806 | || !s || !*s) |
807 | return gotasig; | |
808 | ||
d3a09475 | 809 | if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0) |
3cee93ac | 810 | { |
d3a09475 | 811 | if (strncmp (s, "cYg", 3) != 0) |
29fe111d | 812 | warning ("%s", s); |
3cee93ac | 813 | } |
d3a09475 | 814 | else |
3cee93ac CF |
815 | { |
816 | char *p; | |
1e37c281 JM |
817 | int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
818 | gotasig = target_signal_from_host (sig); | |
0714f9bf SS |
819 | ourstatus->value.sig = gotasig; |
820 | if (gotasig) | |
3cee93ac CF |
821 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
822 | } | |
823 | ||
b8c9b27d | 824 | xfree (s); |
3cee93ac CF |
825 | return gotasig; |
826 | } | |
24e60978 | 827 | |
c1748f97 PM |
828 | static int |
829 | display_selector (HANDLE thread, DWORD sel) | |
830 | { | |
831 | LDT_ENTRY info; | |
832 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
833 | { | |
834 | int base, limit; | |
835 | printf_filtered ("0x%03lx: ", sel); | |
836 | if (!info.HighWord.Bits.Pres) | |
837 | { | |
838 | puts_filtered ("Segment not present\n"); | |
839 | return 0; | |
840 | } | |
841 | base = (info.HighWord.Bits.BaseHi << 24) + | |
842 | (info.HighWord.Bits.BaseMid << 16) | |
843 | + info.BaseLow; | |
844 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
845 | if (info.HighWord.Bits.Granularity) | |
846 | limit = (limit << 12) | 0xfff; | |
847 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); | |
848 | if (info.HighWord.Bits.Default_Big) | |
849 | puts_filtered(" 32-bit "); | |
850 | else | |
851 | puts_filtered(" 16-bit "); | |
852 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) | |
853 | { | |
854 | case 0: | |
855 | puts_filtered ("Data (Read-Only, Exp-up"); | |
856 | break; | |
857 | case 1: | |
858 | puts_filtered ("Data (Read/Write, Exp-up"); | |
859 | break; | |
860 | case 2: | |
861 | puts_filtered ("Unused segment ("); | |
862 | break; | |
863 | case 3: | |
864 | puts_filtered ("Data (Read/Write, Exp-down"); | |
865 | break; | |
866 | case 4: | |
867 | puts_filtered ("Code (Exec-Only, N.Conf"); | |
868 | break; | |
869 | case 5: | |
870 | puts_filtered ("Code (Exec/Read, N.Conf"); | |
871 | break; | |
872 | case 6: | |
873 | puts_filtered ("Code (Exec-Only, Conf"); | |
874 | break; | |
875 | case 7: | |
876 | puts_filtered ("Code (Exec/Read, Conf"); | |
877 | break; | |
878 | default: | |
879 | printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); | |
880 | } | |
881 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
882 | puts_filtered(", N.Acc"); | |
883 | puts_filtered (")\n"); | |
884 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
885 | puts_filtered("System selector "); | |
886 | printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); | |
887 | if (info.HighWord.Bits.Granularity) | |
888 | puts_filtered ("Page granular.\n"); | |
889 | else | |
890 | puts_filtered ("Byte granular.\n"); | |
891 | return 1; | |
892 | } | |
893 | else | |
894 | { | |
895 | printf_filtered ("Invalid selector 0x%lx.\n",sel); | |
896 | return 0; | |
897 | } | |
898 | } | |
899 | ||
900 | static void | |
901 | display_selectors (char * args, int from_tty) | |
902 | { | |
903 | if (!current_thread) | |
904 | { | |
905 | puts_filtered ("Impossible to display selectors now.\n"); | |
906 | return; | |
907 | } | |
908 | if (!args) | |
909 | { | |
910 | ||
911 | puts_filtered ("Selector $cs\n"); | |
912 | display_selector (current_thread->h, | |
913 | current_thread->context.SegCs); | |
914 | puts_filtered ("Selector $ds\n"); | |
915 | display_selector (current_thread->h, | |
916 | current_thread->context.SegDs); | |
917 | puts_filtered ("Selector $es\n"); | |
918 | display_selector (current_thread->h, | |
919 | current_thread->context.SegEs); | |
920 | puts_filtered ("Selector $ss\n"); | |
921 | display_selector (current_thread->h, | |
922 | current_thread->context.SegSs); | |
923 | puts_filtered ("Selector $fs\n"); | |
924 | display_selector (current_thread->h, | |
925 | current_thread->context.SegFs); | |
926 | puts_filtered ("Selector $gs\n"); | |
927 | display_selector (current_thread->h, | |
928 | current_thread->context.SegGs); | |
929 | } | |
930 | else | |
931 | { | |
932 | int sel; | |
933 | sel = parse_and_eval_long (args); | |
934 | printf_filtered ("Selector \"%s\"\n",args); | |
935 | display_selector (current_thread->h, sel); | |
936 | } | |
937 | } | |
938 | ||
939 | static struct cmd_list_element *info_w32_cmdlist = NULL; | |
940 | ||
941 | static void | |
942 | info_w32_command (char *args, int from_tty) | |
943 | { | |
944 | help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); | |
945 | } | |
946 | ||
947 | ||
7393af7c | 948 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
4e52d31c | 949 | printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \ |
7393af7c PM |
950 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress) |
951 | ||
36339ecd | 952 | static int |
450005e7 | 953 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 954 | { |
3cee93ac | 955 | thread_info *th; |
29fe111d | 956 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 957 | |
29fe111d | 958 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 959 | |
3cee93ac CF |
960 | /* Record the context of the current thread */ |
961 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 962 | |
29fe111d | 963 | switch (code) |
24e60978 | 964 | { |
1ef980b9 | 965 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c PM |
966 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
967 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
968 | break; | |
969 | case STATUS_STACK_OVERFLOW: | |
970 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
1ef980b9 | 971 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
7393af7c PM |
972 | break; |
973 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
974 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
975 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
976 | break; | |
977 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
978 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
979 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
980 | break; | |
981 | case STATUS_FLOAT_INEXACT_RESULT: | |
982 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
983 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
984 | break; | |
985 | case STATUS_FLOAT_INVALID_OPERATION: | |
986 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
987 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
988 | break; | |
989 | case STATUS_FLOAT_OVERFLOW: | |
990 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
991 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
992 | break; | |
993 | case STATUS_FLOAT_STACK_CHECK: | |
994 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
995 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 | 996 | break; |
3b7c8b74 | 997 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c PM |
998 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
999 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1000 | break; | |
3b7c8b74 | 1001 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c PM |
1002 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
1003 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1004 | break; | |
3b7c8b74 | 1005 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1006 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
3b7c8b74 | 1007 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
3b7c8b74 | 1008 | break; |
7393af7c PM |
1009 | case STATUS_INTEGER_OVERFLOW: |
1010 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
1011 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 SC |
1012 | break; |
1013 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1014 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
1ef980b9 SC |
1015 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1016 | break; | |
1017 | case DBG_CONTROL_C: | |
7393af7c | 1018 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
1ef980b9 | 1019 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
1020 | break; |
1021 | case DBG_CONTROL_BREAK: | |
7393af7c | 1022 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
5b421780 | 1023 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
1ef980b9 SC |
1024 | break; |
1025 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1026 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
1ef980b9 SC |
1027 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1028 | break; | |
8227c82d | 1029 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c PM |
1030 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
1031 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1032 | break; | |
1033 | case EXCEPTION_PRIV_INSTRUCTION: | |
1034 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
1035 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1036 | break; | |
1037 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1038 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
8227c82d CF |
1039 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
1040 | break; | |
1ef980b9 | 1041 | default: |
02e423b9 CF |
1042 | if (current_event.u.Exception.dwFirstChance) |
1043 | return 0; | |
29fe111d | 1044 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n", |
3a4b77d8 | 1045 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
8e860359 | 1046 | (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress); |
24e60978 | 1047 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 1048 | break; |
24e60978 | 1049 | } |
24e60978 | 1050 | exception_count++; |
7393af7c | 1051 | last_sig = ourstatus->value.sig; |
36339ecd | 1052 | return 1; |
24e60978 SC |
1053 | } |
1054 | ||
3cee93ac CF |
1055 | /* Resume all artificially suspended threads if we are continuing |
1056 | execution */ | |
1057 | static BOOL | |
8a892701 | 1058 | child_continue (DWORD continue_status, int id) |
3cee93ac CF |
1059 | { |
1060 | int i; | |
1061 | thread_info *th; | |
1062 | BOOL res; | |
1063 | ||
7393af7c PM |
1064 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n", |
1065 | current_event.dwProcessId, current_event.dwThreadId, | |
dfe7f3ac | 1066 | continue_status == DBG_CONTINUE ? |
7393af7c | 1067 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
0714f9bf SS |
1068 | res = ContinueDebugEvent (current_event.dwProcessId, |
1069 | current_event.dwThreadId, | |
1070 | continue_status); | |
1e37c281 | 1071 | continue_status = 0; |
0714f9bf | 1072 | if (res) |
3a4b77d8 | 1073 | for (th = &thread_head; (th = th->next) != NULL;) |
29fe111d | 1074 | if (((id == -1) || (id == (int) th->id)) && th->suspend_count) |
3cee93ac | 1075 | { |
fa4ba8da | 1076 | |
3cee93ac CF |
1077 | for (i = 0; i < th->suspend_count; i++) |
1078 | (void) ResumeThread (th->h); | |
1079 | th->suspend_count = 0; | |
fa4ba8da PM |
1080 | if (debug_registers_changed) |
1081 | { | |
1082 | /* Only change the value of the debug reisters */ | |
1083 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
1084 | th->context.Dr0 = dr[0]; | |
1085 | th->context.Dr1 = dr[1]; | |
1086 | th->context.Dr2 = dr[2]; | |
1087 | th->context.Dr3 = dr[3]; | |
1088 | /* th->context.Dr6 = dr[6]; | |
dfe7f3ac | 1089 | FIXME: should we set dr6 also ?? */ |
fa4ba8da PM |
1090 | th->context.Dr7 = dr[7]; |
1091 | CHECK (SetThreadContext (th->h, &th->context)); | |
1092 | th->context.ContextFlags = 0; | |
1093 | } | |
3cee93ac CF |
1094 | } |
1095 | ||
fa4ba8da | 1096 | debug_registers_changed = 0; |
3cee93ac CF |
1097 | return res; |
1098 | } | |
1099 | ||
8a892701 CF |
1100 | /* Get the next event from the child. Return 1 if the event requires |
1101 | handling by WFI (or whatever). | |
1102 | */ | |
1e37c281 | 1103 | static int |
0a65a603 | 1104 | get_child_debug_event (int pid, struct target_waitstatus *ourstatus) |
1e37c281 JM |
1105 | { |
1106 | BOOL debug_event; | |
8a892701 CF |
1107 | DWORD continue_status, event_code; |
1108 | thread_info *th = NULL; | |
1109 | static thread_info dummy_thread_info; | |
450005e7 | 1110 | int retval = 0; |
1e37c281 | 1111 | |
7393af7c | 1112 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 | 1113 | |
8a892701 | 1114 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1115 | goto out; |
1e37c281 JM |
1116 | |
1117 | event_count++; | |
1118 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1119 | |
8a892701 | 1120 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1121 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8a892701 CF |
1122 | |
1123 | switch (event_code) | |
1e37c281 JM |
1124 | { |
1125 | case CREATE_THREAD_DEBUG_EVENT: | |
1126 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
1127 | (unsigned) current_event.dwProcessId, |
1128 | (unsigned) current_event.dwThreadId, | |
1129 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac CF |
1130 | if (saw_create != 1) |
1131 | break; | |
1e37c281 | 1132 | /* Record the existence of this thread */ |
8a892701 CF |
1133 | th = child_add_thread (current_event.dwThreadId, |
1134 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
1135 | if (info_verbose) |
1136 | printf_unfiltered ("[New %s]\n", | |
39f77062 KB |
1137 | target_pid_to_str ( |
1138 | pid_to_ptid (current_event.dwThreadId))); | |
450005e7 | 1139 | retval = current_event.dwThreadId; |
1e37c281 JM |
1140 | break; |
1141 | ||
1142 | case EXIT_THREAD_DEBUG_EVENT: | |
1143 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1144 | (unsigned) current_event.dwProcessId, |
1145 | (unsigned) current_event.dwThreadId, | |
1146 | "EXIT_THREAD_DEBUG_EVENT")); | |
dfe7f3ac CF |
1147 | if (saw_create != 1) |
1148 | break; | |
1e37c281 | 1149 | child_delete_thread (current_event.dwThreadId); |
8a892701 | 1150 | th = &dummy_thread_info; |
1e37c281 JM |
1151 | break; |
1152 | ||
1153 | case CREATE_PROCESS_DEBUG_EVENT: | |
1154 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1155 | (unsigned) current_event.dwProcessId, |
1156 | (unsigned) current_event.dwThreadId, | |
1157 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1158 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac CF |
1159 | if (++saw_create != 1) |
1160 | { | |
1161 | CloseHandle (current_event.u.CreateProcessInfo.hProcess); | |
1162 | break; | |
1163 | } | |
1e37c281 | 1164 | |
dfe7f3ac | 1165 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
9d3789f7 | 1166 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 1167 | /* Add the main thread */ |
9d3789f7 | 1168 | #if 0 |
450005e7 CF |
1169 | th = child_add_thread (current_event.dwProcessId, |
1170 | current_event.u.CreateProcessInfo.hProcess); | |
9d3789f7 CF |
1171 | #endif |
1172 | th = child_add_thread (main_thread_id, | |
8a892701 | 1173 | current_event.u.CreateProcessInfo.hThread); |
9d3789f7 | 1174 | retval = ourstatus->value.related_pid = current_event.dwThreadId; |
1e37c281 JM |
1175 | break; |
1176 | ||
1177 | case EXIT_PROCESS_DEBUG_EVENT: | |
1178 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1179 | (unsigned) current_event.dwProcessId, |
1180 | (unsigned) current_event.dwThreadId, | |
1181 | "EXIT_PROCESS_DEBUG_EVENT")); | |
dfe7f3ac CF |
1182 | if (saw_create != 1) |
1183 | break; | |
1e37c281 JM |
1184 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
1185 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1186 | CloseHandle (current_process_handle); | |
9d3789f7 | 1187 | retval = main_thread_id; |
8a892701 | 1188 | break; |
1e37c281 JM |
1189 | |
1190 | case LOAD_DLL_DEBUG_EVENT: | |
1191 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1192 | (unsigned) current_event.dwProcessId, |
1193 | (unsigned) current_event.dwThreadId, | |
1194 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1195 | CloseHandle (current_event.u.LoadDll.hFile); |
dfe7f3ac CF |
1196 | if (saw_create != 1) |
1197 | break; | |
8a892701 | 1198 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
1e37c281 | 1199 | registers_changed (); /* mark all regs invalid */ |
450005e7 CF |
1200 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1201 | ourstatus->value.integer = 0; | |
9d3789f7 | 1202 | retval = main_thread_id; |
1e37c281 JM |
1203 | break; |
1204 | ||
1205 | case UNLOAD_DLL_DEBUG_EVENT: | |
1206 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1207 | (unsigned) current_event.dwProcessId, |
1208 | (unsigned) current_event.dwThreadId, | |
1209 | "UNLOAD_DLL_DEBUG_EVENT")); | |
dfe7f3ac CF |
1210 | if (saw_create != 1) |
1211 | break; | |
d3ff4a77 CF |
1212 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
1213 | registers_changed (); /* mark all regs invalid */ | |
1214 | /* ourstatus->kind = TARGET_WAITKIND_UNLOADED; | |
3bccec63 | 1215 | does not exist yet. */ |
d3ff4a77 | 1216 | break; |
1e37c281 JM |
1217 | |
1218 | case EXCEPTION_DEBUG_EVENT: | |
1219 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1220 | (unsigned) current_event.dwProcessId, |
1221 | (unsigned) current_event.dwThreadId, | |
1222 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1223 | if (saw_create != 1) |
1224 | break; | |
02e423b9 CF |
1225 | if (handle_exception (ourstatus)) |
1226 | retval = current_event.dwThreadId; | |
1e37c281 JM |
1227 | break; |
1228 | ||
8a892701 | 1229 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1e37c281 | 1230 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1231 | (unsigned) current_event.dwProcessId, |
1232 | (unsigned) current_event.dwThreadId, | |
1233 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1234 | if (saw_create != 1) |
1235 | break; | |
8e860359 | 1236 | if (handle_output_debug_string (ourstatus)) |
9d3789f7 | 1237 | retval = main_thread_id; |
1e37c281 | 1238 | break; |
9d3789f7 | 1239 | |
1e37c281 | 1240 | default: |
dfe7f3ac CF |
1241 | if (saw_create != 1) |
1242 | break; | |
29fe111d CF |
1243 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1244 | (DWORD) current_event.dwProcessId, | |
1245 | (DWORD) current_event.dwThreadId); | |
1246 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
1247 | current_event.dwDebugEventCode); |
1248 | break; | |
1249 | } | |
1250 | ||
dfe7f3ac | 1251 | if (!retval || saw_create != 1) |
8a892701 | 1252 | CHECK (child_continue (continue_status, -1)); |
450005e7 | 1253 | else |
9d3789f7 | 1254 | { |
8e860359 | 1255 | current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE); |
39f77062 | 1256 | inferior_ptid = pid_to_ptid (retval); |
9d3789f7 | 1257 | } |
1e37c281 JM |
1258 | |
1259 | out: | |
450005e7 | 1260 | return retval; |
1e37c281 JM |
1261 | } |
1262 | ||
1e37c281 | 1263 | /* Wait for interesting events to occur in the target process. */ |
39f77062 KB |
1264 | static ptid_t |
1265 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
24e60978 | 1266 | { |
39f77062 KB |
1267 | int pid = PIDGET (ptid); |
1268 | ||
24e60978 SC |
1269 | /* We loop when we get a non-standard exception rather than return |
1270 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1271 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
1272 | the birth or death of threads, which mean that the current thread |
1273 | isn't necessarily what you think it is. */ | |
1274 | ||
1275 | while (1) | |
450005e7 CF |
1276 | { |
1277 | int retval = get_child_debug_event (pid, ourstatus); | |
1278 | if (retval) | |
39f77062 | 1279 | return pid_to_ptid (retval); |
450005e7 CF |
1280 | else |
1281 | { | |
1282 | int detach = 0; | |
3cee93ac | 1283 | |
450005e7 CF |
1284 | if (ui_loop_hook != NULL) |
1285 | detach = ui_loop_hook (0); | |
0714f9bf | 1286 | |
450005e7 CF |
1287 | if (detach) |
1288 | child_kill_inferior (); | |
1289 | } | |
1290 | } | |
24e60978 SC |
1291 | } |
1292 | ||
9d3789f7 CF |
1293 | static void |
1294 | do_initial_child_stuff (DWORD pid) | |
1295 | { | |
1296 | extern int stop_after_trap; | |
fa4ba8da | 1297 | int i; |
9d3789f7 | 1298 | |
7393af7c | 1299 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 CF |
1300 | event_count = 0; |
1301 | exception_count = 0; | |
fa4ba8da | 1302 | debug_registers_changed = 0; |
dfe7f3ac | 1303 | debug_registers_used = 0; |
fa4ba8da PM |
1304 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1305 | dr[i] = 0; | |
9d3789f7 CF |
1306 | current_event.dwProcessId = pid; |
1307 | memset (¤t_event, 0, sizeof (current_event)); | |
1308 | push_target (&child_ops); | |
1309 | child_init_thread_list (); | |
1310 | child_clear_solibs (); | |
1311 | clear_proceed_status (); | |
1312 | init_wait_for_inferior (); | |
1313 | ||
1314 | target_terminal_init (); | |
1315 | target_terminal_inferior (); | |
1316 | ||
1317 | while (1) | |
1318 | { | |
1319 | stop_after_trap = 1; | |
1320 | wait_for_inferior (); | |
1321 | if (stop_signal != TARGET_SIGNAL_TRAP) | |
1322 | resume (0, stop_signal); | |
1323 | else | |
1324 | break; | |
1325 | } | |
1326 | stop_after_trap = 0; | |
1327 | return; | |
1328 | } | |
1329 | ||
02cc9f49 CV |
1330 | /* Since Windows XP, detaching from a process is supported by Windows. |
1331 | The following code tries loading the appropriate functions dynamically. | |
1332 | If loading these functions succeeds use them to actually detach from | |
1333 | the inferior process, otherwise behave as usual, pretending that | |
1334 | detach has worked. */ | |
1335 | static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL); | |
1336 | static BOOL WINAPI (*DebugActiveProcessStop)(DWORD); | |
1337 | ||
1338 | static int | |
1339 | has_detach_ability () | |
1340 | { | |
1341 | static HMODULE kernel32 = NULL; | |
1342 | ||
1343 | if (!kernel32) | |
1344 | kernel32 = LoadLibrary ("kernel32.dll"); | |
1345 | if (kernel32) | |
1346 | { | |
1347 | if (!DebugSetProcessKillOnExit) | |
1348 | DebugSetProcessKillOnExit = GetProcAddress (kernel32, | |
1349 | "DebugSetProcessKillOnExit"); | |
1350 | if (!DebugActiveProcessStop) | |
1351 | DebugActiveProcessStop = GetProcAddress (kernel32, | |
1352 | "DebugActiveProcessStop"); | |
1353 | if (DebugSetProcessKillOnExit && DebugActiveProcessStop) | |
1354 | return 1; | |
1355 | } | |
1356 | return 0; | |
1357 | } | |
24e60978 | 1358 | |
02cc9f49 | 1359 | /* Attach to process PID, then initialize for debugging it. */ |
24e60978 | 1360 | static void |
fba45db2 | 1361 | child_attach (char *args, int from_tty) |
24e60978 SC |
1362 | { |
1363 | BOOL ok; | |
559e75c0 | 1364 | DWORD pid; |
24e60978 SC |
1365 | |
1366 | if (!args) | |
1367 | error_no_arg ("process-id to attach"); | |
1368 | ||
559e75c0 | 1369 | pid = strtoul (args, 0, 0); |
9d3789f7 | 1370 | ok = DebugActiveProcess (pid); |
24e60978 SC |
1371 | |
1372 | if (!ok) | |
1373 | error ("Can't attach to process."); | |
1374 | ||
02cc9f49 CV |
1375 | if (has_detach_ability ()) |
1376 | { | |
1377 | attach_flag = 1; | |
1378 | DebugSetProcessKillOnExit (FALSE); | |
1379 | } | |
1380 | ||
24e60978 SC |
1381 | if (from_tty) |
1382 | { | |
1383 | char *exec_file = (char *) get_exec_file (0); | |
1384 | ||
1385 | if (exec_file) | |
1386 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1387 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1388 | else |
1389 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1390 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1391 | |
1392 | gdb_flush (gdb_stdout); | |
1393 | } | |
1394 | ||
9d3789f7 CF |
1395 | do_initial_child_stuff (pid); |
1396 | target_terminal_ours (); | |
24e60978 SC |
1397 | } |
1398 | ||
24e60978 | 1399 | static void |
0a65a603 | 1400 | child_detach (char *args, int from_tty) |
24e60978 | 1401 | { |
02cc9f49 CV |
1402 | int detached = 1; |
1403 | ||
1404 | if (has_detach_ability ()) | |
1405 | { | |
1406 | delete_command (NULL, 0); | |
1407 | child_continue (DBG_CONTINUE, -1); | |
1408 | if (!DebugActiveProcessStop (current_event.dwProcessId)) | |
3bccec63 | 1409 | { |
02cc9f49 CV |
1410 | error ("Can't detach process %lu (error %lu)", |
1411 | current_event.dwProcessId, GetLastError ()); | |
1412 | detached = 0; | |
3bccec63 | 1413 | } |
02cc9f49 CV |
1414 | DebugSetProcessKillOnExit (FALSE); |
1415 | } | |
1416 | if (detached && from_tty) | |
24e60978 SC |
1417 | { |
1418 | char *exec_file = get_exec_file (0); | |
1419 | if (exec_file == 0) | |
1420 | exec_file = ""; | |
02cc9f49 CV |
1421 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1422 | current_event.dwProcessId); | |
24e60978 SC |
1423 | gdb_flush (gdb_stdout); |
1424 | } | |
39f77062 | 1425 | inferior_ptid = null_ptid; |
24e60978 SC |
1426 | unpush_target (&child_ops); |
1427 | } | |
1428 | ||
24e60978 SC |
1429 | /* Print status information about what we're accessing. */ |
1430 | ||
1431 | static void | |
0a65a603 | 1432 | child_files_info (struct target_ops *ignore) |
24e60978 SC |
1433 | { |
1434 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 1435 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
24e60978 SC |
1436 | } |
1437 | ||
1438 | /* ARGSUSED */ | |
1439 | static void | |
0a65a603 | 1440 | child_open (char *arg, int from_tty) |
24e60978 SC |
1441 | { |
1442 | error ("Use the \"run\" command to start a Unix child process."); | |
1443 | } | |
1444 | ||
39f77062 | 1445 | /* Start an inferior win32 child process and sets inferior_ptid to its pid. |
24e60978 SC |
1446 | EXEC_FILE is the file to run. |
1447 | ALLARGS is a string containing the arguments to the program. | |
1448 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1449 | ||
24e60978 | 1450 | static void |
fba45db2 | 1451 | child_create_inferior (char *exec_file, char *allargs, char **env) |
24e60978 | 1452 | { |
1750a5ef SC |
1453 | char *winenv; |
1454 | char *temp; | |
3a4b77d8 | 1455 | int envlen; |
1750a5ef | 1456 | int i; |
24e60978 SC |
1457 | STARTUPINFO si; |
1458 | PROCESS_INFORMATION pi; | |
24e60978 SC |
1459 | BOOL ret; |
1460 | DWORD flags; | |
eb708f2e | 1461 | char *args; |
dfe7f3ac CF |
1462 | char real_path[MAXPATHLEN]; |
1463 | char *toexec; | |
24e60978 SC |
1464 | |
1465 | if (!exec_file) | |
450005e7 | 1466 | error ("No executable specified, use `target exec'.\n"); |
24e60978 SC |
1467 | |
1468 | memset (&si, 0, sizeof (si)); | |
1469 | si.cb = sizeof (si); | |
1470 | ||
dfe7f3ac CF |
1471 | if (!useshell || !shell[0]) |
1472 | { | |
1473 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1474 | cygwin_conv_to_win32_path (exec_file, real_path); | |
1475 | toexec = real_path; | |
1476 | } | |
1477 | else | |
1478 | { | |
eeb25b8a PM |
1479 | char *newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file) |
1480 | + strlen (allargs) + 2); | |
dfe7f3ac CF |
1481 | sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs); |
1482 | allargs = newallargs; | |
1483 | toexec = shell; | |
1484 | flags = DEBUG_PROCESS; | |
1485 | } | |
eb708f2e | 1486 | |
eeb25b8a PM |
1487 | if (new_group) |
1488 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1489 | ||
1490 | if (new_console) | |
1491 | flags |= CREATE_NEW_CONSOLE; | |
1492 | ||
dfe7f3ac CF |
1493 | args = alloca (strlen (toexec) + strlen (allargs) + 2); |
1494 | strcpy (args, toexec); | |
eb708f2e SC |
1495 | strcat (args, " "); |
1496 | strcat (args, allargs); | |
1497 | ||
e88c49c3 DE |
1498 | /* Prepare the environment vars for CreateProcess. */ |
1499 | { | |
1500 | /* This code use to assume all env vars were file names and would | |
1501 | translate them all to win32 style. That obviously doesn't work in the | |
2dcfc9c7 DE |
1502 | general case. The current rule is that we only translate PATH. |
1503 | We need to handle PATH because we're about to call CreateProcess and | |
1504 | it uses PATH to find DLL's. Fortunately PATH has a well-defined value | |
1505 | in both posix and win32 environments. cygwin.dll will change it back | |
1506 | to posix style if necessary. */ | |
e88c49c3 DE |
1507 | |
1508 | static const char *conv_path_names[] = | |
3a4b77d8 JM |
1509 | { |
1510 | "PATH=", | |
1511 | 0 | |
1512 | }; | |
e88c49c3 DE |
1513 | |
1514 | /* CreateProcess takes the environment list as a null terminated set of | |
1515 | strings (i.e. two nulls terminate the list). */ | |
1516 | ||
1517 | /* Get total size for env strings. */ | |
1518 | for (envlen = 0, i = 0; env[i] && *env[i]; i++) | |
1519 | { | |
2dcfc9c7 | 1520 | int j, len; |
e88c49c3 | 1521 | |
2dcfc9c7 DE |
1522 | for (j = 0; conv_path_names[j]; j++) |
1523 | { | |
1524 | len = strlen (conv_path_names[j]); | |
1525 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1526 | { |
29fe111d | 1527 | if (cygwin_posix_path_list_p (env[i] + len)) |
2dcfc9c7 | 1528 | envlen += len |
29fe111d | 1529 | + cygwin_posix_to_win32_path_list_buf_size (env[i] + len); |
2dcfc9c7 DE |
1530 | else |
1531 | envlen += strlen (env[i]) + 1; | |
1532 | break; | |
e88c49c3 | 1533 | } |
e88c49c3 | 1534 | } |
2dcfc9c7 | 1535 | if (conv_path_names[j] == NULL) |
e88c49c3 DE |
1536 | envlen += strlen (env[i]) + 1; |
1537 | } | |
1538 | ||
1539 | winenv = alloca (envlen + 1); | |
1540 | ||
1541 | /* Copy env strings into new buffer. */ | |
3cee93ac | 1542 | for (temp = winenv, i = 0; env[i] && *env[i]; i++) |
e88c49c3 | 1543 | { |
2dcfc9c7 | 1544 | int j, len; |
e88c49c3 | 1545 | |
2dcfc9c7 DE |
1546 | for (j = 0; conv_path_names[j]; j++) |
1547 | { | |
1548 | len = strlen (conv_path_names[j]); | |
1549 | if (strncmp (conv_path_names[j], env[i], len) == 0) | |
e88c49c3 | 1550 | { |
29fe111d | 1551 | if (cygwin_posix_path_list_p (env[i] + len)) |
e88c49c3 DE |
1552 | { |
1553 | memcpy (temp, env[i], len); | |
29fe111d | 1554 | cygwin_posix_to_win32_path_list (env[i] + len, temp + len); |
e88c49c3 | 1555 | } |
2dcfc9c7 DE |
1556 | else |
1557 | strcpy (temp, env[i]); | |
1558 | break; | |
e88c49c3 | 1559 | } |
e88c49c3 | 1560 | } |
2dcfc9c7 | 1561 | if (conv_path_names[j] == NULL) |
e88c49c3 | 1562 | strcpy (temp, env[i]); |
2dcfc9c7 | 1563 | |
e88c49c3 DE |
1564 | temp += strlen (temp) + 1; |
1565 | } | |
1566 | ||
1567 | /* Final nil string to terminate new env. */ | |
1568 | *temp = 0; | |
1569 | } | |
1750a5ef | 1570 | |
1750a5ef | 1571 | ret = CreateProcess (0, |
3a4b77d8 | 1572 | args, /* command line */ |
24e60978 SC |
1573 | NULL, /* Security */ |
1574 | NULL, /* thread */ | |
1575 | TRUE, /* inherit handles */ | |
1576 | flags, /* start flags */ | |
1750a5ef | 1577 | winenv, |
24e60978 SC |
1578 | NULL, /* current directory */ |
1579 | &si, | |
1580 | &pi); | |
1581 | if (!ret) | |
3a4b77d8 | 1582 | error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ()); |
24e60978 | 1583 | |
700b351b CF |
1584 | CloseHandle (pi.hThread); |
1585 | CloseHandle (pi.hProcess); | |
dfe7f3ac CF |
1586 | |
1587 | if (useshell && shell[0] != '\0') | |
1588 | saw_create = -1; | |
1589 | else | |
1590 | saw_create = 0; | |
1591 | ||
9d3789f7 | 1592 | do_initial_child_stuff (pi.dwProcessId); |
d3a09475 | 1593 | |
8e860359 | 1594 | /* child_continue (DBG_CONTINUE, -1); */ |
1e37c281 | 1595 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); |
24e60978 SC |
1596 | } |
1597 | ||
1598 | static void | |
fba45db2 | 1599 | child_mourn_inferior (void) |
24e60978 | 1600 | { |
8a892701 | 1601 | (void) child_continue (DBG_CONTINUE, -1); |
fa4ba8da | 1602 | i386_cleanup_dregs(); |
24e60978 SC |
1603 | unpush_target (&child_ops); |
1604 | generic_mourn_inferior (); | |
1605 | } | |
1606 | ||
24e60978 SC |
1607 | /* Send a SIGINT to the process group. This acts just like the user typed a |
1608 | ^C on the controlling terminal. */ | |
1609 | ||
b607efe7 | 1610 | static void |
fba45db2 | 1611 | child_stop (void) |
24e60978 | 1612 | { |
1ef980b9 | 1613 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 1614 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 1615 | registers_changed (); /* refresh register state */ |
24e60978 SC |
1616 | } |
1617 | ||
1618 | int | |
eb708f2e | 1619 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, |
0a65a603 AC |
1620 | int write, struct mem_attrib *mem, |
1621 | struct target_ops *target) | |
24e60978 SC |
1622 | { |
1623 | DWORD done; | |
1624 | if (write) | |
1625 | { | |
29fe111d CF |
1626 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
1627 | len, (DWORD) memaddr)); | |
3cee93ac CF |
1628 | WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, |
1629 | len, &done); | |
1630 | FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); | |
24e60978 SC |
1631 | } |
1632 | else | |
1633 | { | |
29fe111d CF |
1634 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
1635 | len, (DWORD) memaddr)); | |
3cee93ac CF |
1636 | ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, |
1637 | &done); | |
24e60978 SC |
1638 | } |
1639 | return done; | |
1640 | } | |
1641 | ||
1642 | void | |
1643 | child_kill_inferior (void) | |
1644 | { | |
3cee93ac CF |
1645 | CHECK (TerminateProcess (current_process_handle, 0)); |
1646 | ||
b5edcb45 ILT |
1647 | for (;;) |
1648 | { | |
8a892701 | 1649 | if (!child_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 1650 | break; |
3cee93ac | 1651 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 1652 | break; |
3cee93ac | 1653 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
1654 | break; |
1655 | } | |
1656 | ||
3cee93ac CF |
1657 | CHECK (CloseHandle (current_process_handle)); |
1658 | ||
1659 | /* this may fail in an attached process so don't check. */ | |
1660 | (void) CloseHandle (current_thread->h); | |
3a4b77d8 | 1661 | target_mourn_inferior (); /* or just child_mourn_inferior? */ |
24e60978 SC |
1662 | } |
1663 | ||
1664 | void | |
39f77062 | 1665 | child_resume (ptid_t ptid, int step, enum target_signal sig) |
24e60978 | 1666 | { |
3cee93ac | 1667 | thread_info *th; |
7393af7c PM |
1668 | DWORD continue_status = DBG_CONTINUE; |
1669 | ||
39f77062 | 1670 | int pid = PIDGET (ptid); |
8a892701 | 1671 | |
7393af7c PM |
1672 | if (sig != TARGET_SIGNAL_0) |
1673 | { | |
1674 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1675 | { | |
1676 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1677 | } | |
1678 | else if (sig == last_sig) | |
1679 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1680 | else | |
1681 | #if 0 | |
1682 | /* This code does not seem to work, because | |
1683 | the kernel does probably not consider changes in the ExceptionRecord | |
dfe7f3ac | 1684 | structure when passing the exception to the inferior. |
7393af7c PM |
1685 | Note that this seems possible in the exception handler itself. */ |
1686 | { | |
1687 | int i; | |
1688 | for (i = 0; xlate[i].them != -1; i++) | |
1689 | if (xlate[i].us == sig) | |
1690 | { | |
1691 | current_event.u.Exception.ExceptionRecord.ExceptionCode = | |
1692 | xlate[i].them; | |
1693 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1694 | break; | |
1695 | } | |
1696 | if (continue_status == DBG_CONTINUE) | |
1697 | { | |
1698 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1699 | } | |
1700 | } | |
1701 | #endif | |
dfe7f3ac | 1702 | DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n", |
7393af7c PM |
1703 | last_sig)); |
1704 | } | |
1705 | ||
1706 | last_sig = TARGET_SIGNAL_0; | |
24e60978 | 1707 | |
3cee93ac CF |
1708 | DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n", |
1709 | pid, step, sig)); | |
1710 | ||
1711 | /* Get context for currently selected thread */ | |
1712 | th = thread_rec (current_event.dwThreadId, FALSE); | |
450005e7 | 1713 | if (th) |
24e60978 | 1714 | { |
450005e7 CF |
1715 | if (step) |
1716 | { | |
1717 | /* Single step by setting t bit */ | |
1718 | child_fetch_inferior_registers (PS_REGNUM); | |
1719 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1720 | } | |
24e60978 | 1721 | |
450005e7 CF |
1722 | if (th->context.ContextFlags) |
1723 | { | |
fa4ba8da PM |
1724 | if (debug_registers_changed) |
1725 | { | |
dfe7f3ac CF |
1726 | th->context.Dr0 = dr[0]; |
1727 | th->context.Dr1 = dr[1]; | |
1728 | th->context.Dr2 = dr[2]; | |
1729 | th->context.Dr3 = dr[3]; | |
1730 | /* th->context.Dr6 = dr[6]; | |
1731 | FIXME: should we set dr6 also ?? */ | |
1732 | th->context.Dr7 = dr[7]; | |
fa4ba8da | 1733 | } |
450005e7 CF |
1734 | CHECK (SetThreadContext (th->h, &th->context)); |
1735 | th->context.ContextFlags = 0; | |
1736 | } | |
24e60978 SC |
1737 | } |
1738 | ||
3cee93ac CF |
1739 | /* Allow continuing with the same signal that interrupted us. |
1740 | Otherwise complain. */ | |
24e60978 | 1741 | |
8a892701 | 1742 | child_continue (continue_status, pid); |
24e60978 SC |
1743 | } |
1744 | ||
1745 | static void | |
fba45db2 | 1746 | child_prepare_to_store (void) |
24e60978 SC |
1747 | { |
1748 | /* Do nothing, since we can store individual regs */ | |
1749 | } | |
1750 | ||
1751 | static int | |
fba45db2 | 1752 | child_can_run (void) |
24e60978 SC |
1753 | { |
1754 | return 1; | |
1755 | } | |
1756 | ||
1757 | static void | |
0a65a603 | 1758 | child_close (int x) |
24e60978 | 1759 | { |
39f77062 | 1760 | DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n", |
3bccec63 | 1761 | PIDGET (inferior_ptid))); |
24e60978 | 1762 | } |
1ef980b9 | 1763 | |
3a4b77d8 | 1764 | struct target_ops child_ops; |
c719b714 | 1765 | |
3a4b77d8 JM |
1766 | static void |
1767 | init_child_ops (void) | |
24e60978 | 1768 | { |
3a4b77d8 JM |
1769 | child_ops.to_shortname = "child"; |
1770 | child_ops.to_longname = "Win32 child process"; | |
1771 | child_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
1772 | child_ops.to_open = child_open; | |
1773 | child_ops.to_close = child_close; | |
1774 | child_ops.to_attach = child_attach; | |
1775 | child_ops.to_detach = child_detach; | |
1776 | child_ops.to_resume = child_resume; | |
1777 | child_ops.to_wait = child_wait; | |
1778 | child_ops.to_fetch_registers = child_fetch_inferior_registers; | |
1779 | child_ops.to_store_registers = child_store_inferior_registers; | |
1780 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
1781 | child_ops.to_xfer_memory = child_xfer_memory; | |
1782 | child_ops.to_files_info = child_files_info; | |
1783 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1784 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1785 | child_ops.to_terminal_init = terminal_init_inferior; | |
1786 | child_ops.to_terminal_inferior = terminal_inferior; | |
1787 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1788 | child_ops.to_terminal_ours = terminal_ours; | |
1789 | child_ops.to_terminal_info = child_terminal_info; | |
1790 | child_ops.to_kill = child_kill_inferior; | |
1791 | child_ops.to_load = 0; | |
1792 | child_ops.to_lookup_symbol = 0; | |
1793 | child_ops.to_create_inferior = child_create_inferior; | |
1794 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
1795 | child_ops.to_can_run = child_can_run; | |
1796 | child_ops.to_notice_signals = 0; | |
1797 | child_ops.to_thread_alive = win32_child_thread_alive; | |
d3a09475 | 1798 | child_ops.to_pid_to_str = cygwin_pid_to_str; |
3a4b77d8 JM |
1799 | child_ops.to_stop = child_stop; |
1800 | child_ops.to_stratum = process_stratum; | |
1801 | child_ops.DONT_USE = 0; | |
1802 | child_ops.to_has_all_memory = 1; | |
1803 | child_ops.to_has_memory = 1; | |
1804 | child_ops.to_has_stack = 1; | |
1805 | child_ops.to_has_registers = 1; | |
1806 | child_ops.to_has_execution = 1; | |
1807 | child_ops.to_sections = 0; | |
1808 | child_ops.to_sections_end = 0; | |
1809 | child_ops.to_magic = OPS_MAGIC; | |
c719b714 | 1810 | } |
24e60978 SC |
1811 | |
1812 | void | |
fba45db2 | 1813 | _initialize_inftarg (void) |
24e60978 | 1814 | { |
fa58ee11 | 1815 | struct cmd_list_element *c; |
dfe7f3ac | 1816 | const char *sh; |
fa58ee11 | 1817 | |
3a4b77d8 | 1818 | init_child_ops (); |
1ef980b9 | 1819 | |
fa58ee11 EZ |
1820 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1821 | "Load dll library symbols from FILE."); | |
5ba2abeb | 1822 | set_cmd_completer (c, filename_completer); |
450005e7 | 1823 | |
dfe7f3ac CF |
1824 | sh = getenv ("SHELL"); |
1825 | if (!sh) | |
1826 | sh = "/bin/sh"; | |
1827 | if (access (sh, X_OK) != 0) | |
1828 | { | |
1829 | shell[0] = '\0'; | |
1830 | useshell = 0; | |
1831 | } | |
1832 | else | |
1833 | { | |
1834 | cygwin_conv_to_win32_path (sh, shell); | |
1835 | useshell = 1; | |
1836 | } | |
1837 | ||
450005e7 CF |
1838 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); |
1839 | ||
dfe7f3ac CF |
1840 | add_show_from_set (add_set_cmd ("shell", class_support, var_boolean, |
1841 | (char *) &useshell, | |
1842 | "Set use of shell to start subprocess.", | |
1843 | &setlist), | |
1844 | &showlist); | |
1845 | ||
450005e7 | 1846 | add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean, |
8e860359 CF |
1847 | (char *) &new_console, |
1848 | "Set creation of new console when creating child process.", | |
1849 | &setlist), | |
1850 | &showlist); | |
24e60978 | 1851 | |
450005e7 | 1852 | add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean, |
8e860359 CF |
1853 | (char *) &new_group, |
1854 | "Set creation of new group when creating child process.", | |
1855 | &setlist), | |
1856 | &showlist); | |
24e60978 | 1857 | |
450005e7 | 1858 | add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean, |
8e860359 CF |
1859 | (char *) &debug_exec, |
1860 | "Set whether to display execution in child process.", | |
1861 | &setlist), | |
1862 | &showlist); | |
1ef980b9 | 1863 | |
450005e7 | 1864 | add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean, |
8e860359 CF |
1865 | (char *) &debug_events, |
1866 | "Set whether to display kernel events in child process.", | |
1867 | &setlist), | |
1868 | &showlist); | |
1ef980b9 | 1869 | |
450005e7 | 1870 | add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean, |
8e860359 CF |
1871 | (char *) &debug_memory, |
1872 | "Set whether to display memory accesses in child process.", | |
1873 | &setlist), | |
1874 | &showlist); | |
1ef980b9 | 1875 | |
450005e7 | 1876 | add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean, |
8e860359 CF |
1877 | (char *) &debug_exceptions, |
1878 | "Set whether to display kernel exceptions in child process.", | |
1879 | &setlist), | |
1880 | &showlist); | |
1ef980b9 | 1881 | |
450005e7 CF |
1882 | add_info ("dll", info_dll_command, "Status of loaded DLLs."); |
1883 | add_info_alias ("sharedlibrary", "dll", 1); | |
1884 | ||
c1748f97 PM |
1885 | add_prefix_cmd ("w32", class_info, info_w32_command, |
1886 | "Print information specific to Win32 debugging.", | |
1887 | &info_w32_cmdlist, "info w32 ", 0, &infolist); | |
1888 | ||
1889 | add_cmd ("selector", class_info, display_selectors, | |
1890 | "Display selectors infos.", | |
1891 | &info_w32_cmdlist); | |
1892 | ||
24e60978 SC |
1893 | add_target (&child_ops); |
1894 | } | |
3cee93ac | 1895 | |
fa4ba8da PM |
1896 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
1897 | ||
1898 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
1899 | Here we just store the address in dr array, the registers will be | |
1900 | actually set up when child_continue is called. */ | |
1901 | void | |
1902 | cygwin_set_dr (int i, CORE_ADDR addr) | |
1903 | { | |
1904 | if (i < 0 || i > 3) | |
1905 | internal_error (__FILE__, __LINE__, | |
1906 | "Invalid register %d in cygwin_set_dr.\n", i); | |
1907 | dr[i] = (unsigned) addr; | |
1908 | debug_registers_changed = 1; | |
1909 | debug_registers_used = 1; | |
1910 | } | |
1911 | ||
1912 | /* Pass the value VAL to the inferior in the DR7 debug control | |
1913 | register. Here we just store the address in D_REGS, the watchpoint | |
1914 | will be actually set up in child_wait. */ | |
1915 | void | |
1916 | cygwin_set_dr7 (unsigned val) | |
1917 | { | |
1918 | dr[7] = val; | |
1919 | debug_registers_changed = 1; | |
1920 | debug_registers_used = 1; | |
1921 | } | |
1922 | ||
1923 | /* Get the value of the DR6 debug status register from the inferior. | |
1924 | Here we just return the value stored in dr[6] | |
1925 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
1926 | unsigned | |
1927 | cygwin_get_dr6 (void) | |
1928 | { | |
1929 | return dr[6]; | |
1930 | } | |
1931 | ||
1932 | ||
3cee93ac CF |
1933 | /* Determine if the thread referenced by "pid" is alive |
1934 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 | |
1935 | it means that the pid has died. Otherwise it is assumed to be alive. */ | |
1936 | static int | |
39f77062 | 1937 | win32_child_thread_alive (ptid_t ptid) |
3cee93ac | 1938 | { |
39f77062 KB |
1939 | int pid = PIDGET (ptid); |
1940 | ||
3a4b77d8 JM |
1941 | return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
1942 | FALSE : TRUE; | |
3cee93ac CF |
1943 | } |
1944 | ||
1945 | /* Convert pid to printable format. */ | |
1946 | char * | |
39f77062 | 1947 | cygwin_pid_to_str (ptid_t ptid) |
3cee93ac CF |
1948 | { |
1949 | static char buf[80]; | |
39f77062 KB |
1950 | int pid = PIDGET (ptid); |
1951 | ||
29fe111d | 1952 | if ((DWORD) pid == current_event.dwProcessId) |
b69571f5 | 1953 | sprintf (buf, "process %d", pid); |
3cee93ac | 1954 | else |
b69571f5 | 1955 | sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid); |
3cee93ac CF |
1956 | return buf; |
1957 | } | |
8e860359 CF |
1958 | |
1959 | static int | |
1960 | core_dll_symbols_add (char *dll_name, DWORD base_addr) | |
1961 | { | |
1962 | struct objfile *objfile; | |
1963 | char *objfile_basename; | |
1964 | const char *dll_basename; | |
1965 | ||
1966 | if (!(dll_basename = strrchr (dll_name, '/'))) | |
1967 | dll_basename = dll_name; | |
1968 | else | |
1969 | dll_basename++; | |
1970 | ||
1971 | ALL_OBJFILES (objfile) | |
1972 | { | |
1973 | objfile_basename = strrchr (objfile->name, '/'); | |
1974 | ||
1975 | if (objfile_basename && | |
1976 | strcmp (dll_basename, objfile_basename + 1) == 0) | |
1977 | { | |
1978 | printf_unfiltered ("%08lx:%s (symbols previously loaded)\n", | |
1979 | base_addr, dll_name); | |
1980 | goto out; | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | register_loaded_dll (dll_name, base_addr + 0x1000); | |
02e423b9 | 1985 | solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000); |
8e860359 CF |
1986 | |
1987 | out: | |
1988 | return 1; | |
1989 | } | |
1990 | ||
1991 | typedef struct | |
1992 | { | |
1993 | struct target_ops *target; | |
1994 | bfd_vma addr; | |
1995 | } | |
1996 | map_code_section_args; | |
1997 | ||
1998 | static void | |
554cb486 | 1999 | map_single_dll_code_section (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
2000 | { |
2001 | int old; | |
2002 | int update_coreops; | |
2003 | struct section_table *new_target_sect_ptr; | |
2004 | ||
2005 | map_code_section_args *args = (map_code_section_args *) obj; | |
2006 | struct target_ops *target = args->target; | |
2007 | if (sect->flags & SEC_CODE) | |
2008 | { | |
2009 | update_coreops = core_ops.to_sections == target->to_sections; | |
2010 | ||
2011 | if (target->to_sections) | |
2012 | { | |
2013 | old = target->to_sections_end - target->to_sections; | |
2014 | target->to_sections = (struct section_table *) | |
2015 | xrealloc ((char *) target->to_sections, | |
2016 | (sizeof (struct section_table)) * (1 + old)); | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | old = 0; | |
2021 | target->to_sections = (struct section_table *) | |
2022 | xmalloc ((sizeof (struct section_table))); | |
2023 | } | |
2024 | target->to_sections_end = target->to_sections + (1 + old); | |
2025 | ||
2026 | /* Update the to_sections field in the core_ops structure | |
3bccec63 | 2027 | if needed. */ |
8e860359 CF |
2028 | if (update_coreops) |
2029 | { | |
2030 | core_ops.to_sections = target->to_sections; | |
2031 | core_ops.to_sections_end = target->to_sections_end; | |
2032 | } | |
2033 | new_target_sect_ptr = target->to_sections + old; | |
2034 | new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect); | |
2035 | new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) + | |
2036 | bfd_section_size (abfd, sect);; | |
2037 | new_target_sect_ptr->the_bfd_section = sect; | |
2038 | new_target_sect_ptr->bfd = abfd; | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | static int | |
2043 | dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target) | |
2044 | { | |
2045 | bfd *dll_bfd; | |
2046 | map_code_section_args map_args; | |
2047 | asection *lowest_sect; | |
2048 | char *name; | |
2049 | if (dll_name == NULL || target == NULL) | |
2050 | return 0; | |
66ed1d85 | 2051 | name = xstrdup (dll_name); |
8e860359 CF |
2052 | dll_bfd = bfd_openr (name, "pei-i386"); |
2053 | if (dll_bfd == NULL) | |
2054 | return 0; | |
2055 | ||
2056 | if (bfd_check_format (dll_bfd, bfd_object)) | |
2057 | { | |
2058 | lowest_sect = bfd_get_section_by_name (dll_bfd, ".text"); | |
2059 | if (lowest_sect == NULL) | |
2060 | return 0; | |
2061 | map_args.target = target; | |
2062 | map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect); | |
2063 | ||
554cb486 | 2064 | bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args)); |
8e860359 CF |
2065 | } |
2066 | ||
2067 | return 1; | |
2068 | } | |
2069 | ||
2070 | static void | |
554cb486 | 2071 | core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj) |
8e860359 CF |
2072 | { |
2073 | struct target_ops *target = (struct target_ops *) obj; | |
2074 | ||
2075 | DWORD base_addr; | |
2076 | ||
2077 | int dll_name_size; | |
2078 | char *dll_name = NULL; | |
2079 | char *buf = NULL; | |
2080 | struct win32_pstatus *pstatus; | |
2081 | char *p; | |
2082 | ||
2083 | if (strncmp (sect->name, ".module", 7)) | |
2084 | return; | |
2085 | ||
2086 | buf = (char *) xmalloc (sect->_raw_size + 1); | |
2087 | if (!buf) | |
2088 | { | |
2089 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
2090 | goto out; | |
2091 | } | |
2092 | if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size)) | |
2093 | goto out; | |
2094 | ||
2095 | pstatus = (struct win32_pstatus *) buf; | |
2096 | ||
2097 | memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr)); | |
2098 | dll_name_size = pstatus->data.module_info.module_name_size; | |
2099 | if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size) | |
2100 | goto out; | |
2101 | ||
2102 | dll_name = (char *) xmalloc (dll_name_size + 1); | |
2103 | if (!dll_name) | |
2104 | { | |
2105 | printf_unfiltered ("memory allocation failed for %s\n", sect->name); | |
2106 | goto out; | |
2107 | } | |
2108 | strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size); | |
2109 | ||
2110 | while ((p = strchr (dll_name, '\\'))) | |
2111 | *p = '/'; | |
2112 | ||
2113 | if (!core_dll_symbols_add (dll_name, (DWORD) base_addr)) | |
2114 | printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name); | |
2115 | ||
2116 | if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target)) | |
2117 | printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name); | |
2118 | ||
2119 | out: | |
2120 | if (buf) | |
b8c9b27d | 2121 | xfree (buf); |
8e860359 | 2122 | if (dll_name) |
b8c9b27d | 2123 | xfree (dll_name); |
8e860359 CF |
2124 | return; |
2125 | } | |
2126 | ||
2127 | void | |
0a65a603 AC |
2128 | child_solib_add (char *filename, int from_tty, struct target_ops *target, |
2129 | int readsyms) | |
8e860359 | 2130 | { |
990f9fe3 FF |
2131 | if (!readsyms) |
2132 | return; | |
8e860359 CF |
2133 | if (core_bfd) |
2134 | { | |
2135 | child_clear_solibs (); | |
2136 | bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target); | |
2137 | } | |
2138 | else | |
2139 | { | |
2140 | if (solib_end && solib_end->name) | |
d3ff4a77 | 2141 | solib_end->objfile = solib_symbols_add (solib_end->name, from_tty, |
3bccec63 | 2142 | solib_end->load_addr); |
8e860359 CF |
2143 | } |
2144 | } | |
2145 | ||
2146 | static void | |
2147 | fetch_elf_core_registers (char *core_reg_sect, | |
2148 | unsigned core_reg_size, | |
2149 | int which, | |
2150 | CORE_ADDR reg_addr) | |
2151 | { | |
2152 | int r; | |
2153 | if (core_reg_size < sizeof (CONTEXT)) | |
2154 | { | |
2155 | error ("Core file register section too small (%u bytes).", core_reg_size); | |
2156 | return; | |
2157 | } | |
2158 | for (r = 0; r < NUM_REGS; r++) | |
2159 | supply_register (r, core_reg_sect + mappings[r]); | |
2160 | } | |
2161 | ||
2162 | static struct core_fns win32_elf_core_fns = | |
2163 | { | |
2164 | bfd_target_elf_flavour, | |
2165 | default_check_format, | |
2166 | default_core_sniffer, | |
2167 | fetch_elf_core_registers, | |
2168 | NULL | |
2169 | }; | |
2170 | ||
2171 | void | |
0613c401 | 2172 | _initialize_core_win32 (void) |
8e860359 CF |
2173 | { |
2174 | add_core_fns (&win32_elf_core_fns); | |
2175 | } | |
2a3d5645 CF |
2176 | |
2177 | void | |
2178 | _initialize_check_for_gdb_ini (void) | |
2179 | { | |
2180 | char *homedir; | |
2181 | if (inhibit_gdbinit) | |
2182 | return; | |
2183 | ||
2184 | homedir = getenv ("HOME"); | |
2185 | if (homedir) | |
2186 | { | |
2187 | char *p; | |
2188 | char *oldini = (char *) alloca (strlen (homedir) + | |
2189 | sizeof ("/gdb.ini")); | |
2190 | strcpy (oldini, homedir); | |
2191 | p = strchr (oldini, '\0'); | |
2192 | if (p > oldini && p[-1] != '/') | |
2193 | *p++ = '/'; | |
2194 | strcpy (p, "gdb.ini"); | |
2195 | if (access (oldini, 0) == 0) | |
2196 | { | |
2197 | int len = strlen (oldini); | |
2198 | char *newini = alloca (len + 1); | |
dfe7f3ac | 2199 | sprintf (newini, "%.*s.gdbinit", |
58fa08f0 | 2200 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
2a3d5645 CF |
2201 | warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini); |
2202 | } | |
2203 | } | |
2204 | } |