Commit | Line | Data |
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dc05df57 | 1 | /* Target-vector operations for controlling windows child processes, for GDB. |
0a65a603 | 2 | |
281b533b | 3 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
4c38e0a4 | 4 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
0a65a603 | 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 | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
24e60978 SC |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
a9762ec7 | 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
24e60978 SC |
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 | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
24e60978 | 22 | |
dfe7f3ac | 23 | /* Originally by Steve Chamberlain, sac@cygnus.com */ |
24e60978 SC |
24 | |
25 | #include "defs.h" | |
26 | #include "frame.h" /* required by inferior.h */ | |
27 | #include "inferior.h" | |
28 | #include "target.h" | |
60250e8b | 29 | #include "exceptions.h" |
24e60978 SC |
30 | #include "gdbcore.h" |
31 | #include "command.h" | |
fa58ee11 | 32 | #include "completer.h" |
4e052eda | 33 | #include "regcache.h" |
2a3d5645 | 34 | #include "top.h" |
403d9909 CF |
35 | #include <signal.h> |
36 | #include <sys/types.h> | |
37 | #include <fcntl.h> | |
38 | #include <stdlib.h> | |
39 | #include <windows.h> | |
40 | #include <imagehlp.h> | |
2b008701 | 41 | #include <psapi.h> |
10325bc5 | 42 | #ifdef __CYGWIN__ |
403d9909 | 43 | #include <sys/cygwin.h> |
10325bc5 | 44 | #endif |
a244bdca | 45 | #include <signal.h> |
cad9cd60 | 46 | |
24e60978 | 47 | #include "buildsym.h" |
1ef980b9 SC |
48 | #include "symfile.h" |
49 | #include "objfiles.h" | |
de1b3c3d | 50 | #include "gdb_obstack.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> |
4646aa9d | 56 | #include "exec.h" |
3ee6f623 | 57 | #include "solist.h" |
3cb8e7f6 | 58 | #include "solib.h" |
de1b3c3d | 59 | #include "xml-support.h" |
24e60978 | 60 | |
6c7de422 MK |
61 | #include "i386-tdep.h" |
62 | #include "i387-tdep.h" | |
63 | ||
31b060a2 CF |
64 | #include "windows-tdep.h" |
65 | #include "windows-nat.h" | |
9bb9e8ad | 66 | #include "i386-nat.h" |
ecc13e53 | 67 | #include "complaints.h" |
de1b3c3d | 68 | |
418c6cb3 | 69 | #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges |
2b008701 CF |
70 | #define DebugActiveProcessStop dyn_DebugActiveProcessStop |
71 | #define DebugBreakProcess dyn_DebugBreakProcess | |
72 | #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit | |
73 | #define EnumProcessModules dyn_EnumProcessModules | |
d0d0ab16 | 74 | #ifndef __CYGWIN__ |
2b008701 | 75 | #define GetModuleFileNameExA dyn_GetModuleFileNameExA |
d0d0ab16 CV |
76 | #else |
77 | #define GetModuleFileNameExW dyn_GetModuleFileNameExW | |
78 | #endif | |
2b008701 | 79 | #define GetModuleInformation dyn_GetModuleInformation |
418c6cb3 CF |
80 | #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA |
81 | #define OpenProcessToken dyn_OpenProcessToken | |
2b008701 | 82 | |
418c6cb3 CF |
83 | static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, |
84 | DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
2b008701 CF |
85 | static BOOL WINAPI (*DebugActiveProcessStop) (DWORD); |
86 | static BOOL WINAPI (*DebugBreakProcess) (HANDLE); | |
87 | static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL); | |
88 | static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD, | |
89 | LPDWORD); | |
d0d0ab16 | 90 | #ifndef __CYGWIN__ |
2b008701 CF |
91 | static DWORD WINAPI (*GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, |
92 | DWORD); | |
d0d0ab16 CV |
93 | #else |
94 | static DWORD WINAPI (*GetModuleFileNameExW) (HANDLE, HMODULE, LPWSTR, | |
95 | DWORD); | |
96 | #endif | |
2b008701 CF |
97 | static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, |
98 | DWORD); | |
418c6cb3 CF |
99 | static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID); |
100 | static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE); | |
2b008701 | 101 | |
dc05df57 | 102 | static struct target_ops windows_ops; |
3ee6f623 | 103 | |
10325bc5 | 104 | #ifdef __CYGWIN__ |
a244bdca | 105 | /* The starting and ending address of the cygwin1.dll text segment. */ |
dc05df57 CF |
106 | static CORE_ADDR cygwin_load_start; |
107 | static CORE_ADDR cygwin_load_end; | |
10325bc5 | 108 | #endif |
a244bdca CF |
109 | |
110 | static int have_saved_context; /* True if we've saved context from a cygwin signal. */ | |
111 | static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */ | |
112 | ||
0714f9bf SS |
113 | /* If we're not using the old Cygwin header file set, define the |
114 | following which never should have been in the generic Win32 API | |
115 | headers in the first place since they were our own invention... */ | |
116 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 117 | enum |
8e860359 CF |
118 | { |
119 | FLAG_TRACE_BIT = 0x100, | |
120 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
121 | }; | |
0714f9bf SS |
122 | #endif |
123 | ||
5851ab76 JB |
124 | #ifndef CONTEXT_EXTENDED_REGISTERS |
125 | /* This macro is only defined on ia32. It only makes sense on this target, | |
126 | so define it as zero if not already defined. */ | |
127 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
128 | #endif | |
129 | ||
fa4ba8da PM |
130 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
131 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 132 | |
41b4aadc | 133 | static uintptr_t dr[8]; |
87a45c96 CF |
134 | static int debug_registers_changed; |
135 | static int debug_registers_used; | |
16d905e2 CF |
136 | |
137 | static int windows_initialization_done; | |
6537bb24 | 138 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 139 | |
3cee93ac CF |
140 | /* The string sent by cygwin when it processes a signal. |
141 | FIXME: This should be in a cygwin include file. */ | |
3929abe9 CF |
142 | #ifndef _CYGWIN_SIGNAL_STRING |
143 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
144 | #endif | |
3cee93ac | 145 | |
29fe111d | 146 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 147 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
148 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
149 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
150 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 | 151 | |
dc05df57 | 152 | static void windows_stop (ptid_t); |
02529b48 | 153 | static int windows_thread_alive (struct target_ops *, ptid_t); |
7d85a9c0 | 154 | static void windows_kill_inferior (struct target_ops *); |
3cee93ac | 155 | |
9bb9e8ad PM |
156 | static void cygwin_set_dr (int i, CORE_ADDR addr); |
157 | static void cygwin_set_dr7 (unsigned long val); | |
158 | static unsigned long cygwin_get_dr6 (void); | |
159 | ||
7393af7c PM |
160 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
161 | /* Set if a signal was received from the debugged process */ | |
162 | ||
3cee93ac | 163 | /* Thread information structure used to track information that is |
6537bb24 | 164 | not available in gdb's thread structure. */ |
3cee93ac | 165 | typedef struct thread_info_struct |
3a4b77d8 JM |
166 | { |
167 | struct thread_info_struct *next; | |
168 | DWORD id; | |
169 | HANDLE h; | |
170 | char *name; | |
6537bb24 | 171 | int suspended; |
3ade5333 | 172 | int reload_context; |
3a4b77d8 | 173 | CONTEXT context; |
1e37c281 | 174 | STACKFRAME sf; |
8e860359 CF |
175 | } |
176 | thread_info; | |
1e37c281 | 177 | |
29fe111d | 178 | static thread_info thread_head; |
24e60978 | 179 | |
24e60978 SC |
180 | /* The process and thread handles for the above context. */ |
181 | ||
3cee93ac CF |
182 | static DEBUG_EVENT current_event; /* The current debug event from |
183 | WaitForDebugEvent */ | |
184 | static HANDLE current_process_handle; /* Currently executing process */ | |
185 | static thread_info *current_thread; /* Info on currently selected thread */ | |
349b409f | 186 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
187 | |
188 | /* Counts of things. */ | |
189 | static int exception_count = 0; | |
190 | static int event_count = 0; | |
dfe7f3ac | 191 | static int saw_create; |
bf25528d | 192 | static int open_process_used = 0; |
24e60978 SC |
193 | |
194 | /* User options. */ | |
195 | static int new_console = 0; | |
10325bc5 | 196 | #ifdef __CYGWIN__ |
09280ddf | 197 | static int cygwin_exceptions = 0; |
10325bc5 | 198 | #endif |
1e37c281 | 199 | static int new_group = 1; |
dfe7f3ac CF |
200 | static int debug_exec = 0; /* show execution */ |
201 | static int debug_events = 0; /* show events from kernel */ | |
202 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 203 | static int debug_exceptions = 0; /* show target exceptions */ |
dfe7f3ac CF |
204 | static int useshell = 0; /* use shell for subprocesses */ |
205 | ||
7e63b4e4 | 206 | /* This vector maps GDB's idea of a register's number into an offset |
dc05df57 | 207 | in the windows exception context vector. |
24e60978 | 208 | |
3cee93ac | 209 | It also contains the bit mask needed to load the register in question. |
24e60978 | 210 | |
7e63b4e4 JB |
211 | The contents of this table can only be computed by the units |
212 | that provide CPU-specific support for Windows native debugging. | |
213 | These units should set the table by calling | |
dc05df57 | 214 | windows_set_context_register_offsets. |
7e63b4e4 | 215 | |
24e60978 SC |
216 | One day we could read a reg, we could inspect the context we |
217 | already have loaded, if it doesn't have the bit set that we need, | |
218 | we read that set of registers in using GetThreadContext. If the | |
219 | context already contains what we need, we just unpack it. Then to | |
220 | write a register, first we have to ensure that the context contains | |
221 | the other regs of the group, and then we copy the info in and set | |
222 | out bit. */ | |
223 | ||
7e63b4e4 | 224 | static const int *mappings; |
d3a09475 | 225 | |
24e60978 SC |
226 | /* This vector maps the target's idea of an exception (extracted |
227 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
228 | ||
229 | struct xlate_exception | |
230 | { | |
231 | int them; | |
232 | enum target_signal us; | |
233 | }; | |
234 | ||
24e60978 SC |
235 | static const struct xlate_exception |
236 | xlate[] = | |
237 | { | |
238 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 239 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
240 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
241 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
242 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
7393af7c | 243 | {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE}, |
24e60978 SC |
244 | {-1, -1}}; |
245 | ||
7e63b4e4 JB |
246 | /* Set the MAPPINGS static global to OFFSETS. |
247 | See the description of MAPPINGS for more details. */ | |
248 | ||
249 | void | |
dc05df57 | 250 | windows_set_context_register_offsets (const int *offsets) |
7e63b4e4 JB |
251 | { |
252 | mappings = offsets; | |
253 | } | |
254 | ||
fa4ba8da PM |
255 | static void |
256 | check (BOOL ok, const char *file, int line) | |
257 | { | |
258 | if (!ok) | |
dfe7f3ac | 259 | printf_filtered ("error return %s:%d was %lu\n", file, line, |
fa4ba8da PM |
260 | GetLastError ()); |
261 | } | |
262 | ||
6537bb24 PA |
263 | /* Find a thread record given a thread id. If GET_CONTEXT is not 0, |
264 | then also retrieve the context for this thread. If GET_CONTEXT is | |
265 | negative, then don't suspend the thread. */ | |
3cee93ac CF |
266 | static thread_info * |
267 | thread_rec (DWORD id, int get_context) | |
24e60978 | 268 | { |
3cee93ac CF |
269 | thread_info *th; |
270 | ||
3a4b77d8 | 271 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
272 | if (th->id == id) |
273 | { | |
6537bb24 | 274 | if (!th->suspended && get_context) |
3cee93ac | 275 | { |
8a892701 | 276 | if (get_context > 0 && id != current_event.dwThreadId) |
6537bb24 PA |
277 | { |
278 | if (SuspendThread (th->h) == (DWORD) -1) | |
279 | { | |
280 | DWORD err = GetLastError (); | |
281 | warning (_("SuspendThread failed. (winerr %d)"), | |
282 | (int) err); | |
283 | return NULL; | |
284 | } | |
285 | th->suspended = 1; | |
286 | } | |
3cee93ac | 287 | else if (get_context < 0) |
6537bb24 | 288 | th->suspended = -1; |
3ade5333 | 289 | th->reload_context = 1; |
3cee93ac CF |
290 | } |
291 | return th; | |
292 | } | |
293 | ||
294 | return NULL; | |
295 | } | |
296 | ||
2dc38344 | 297 | /* Add a thread to the thread list. */ |
3cee93ac | 298 | static thread_info * |
dc05df57 | 299 | windows_add_thread (ptid_t ptid, HANDLE h) |
3cee93ac CF |
300 | { |
301 | thread_info *th; | |
2dc38344 PA |
302 | DWORD id; |
303 | ||
304 | gdb_assert (ptid_get_tid (ptid) != 0); | |
305 | ||
306 | id = ptid_get_tid (ptid); | |
3cee93ac CF |
307 | |
308 | if ((th = thread_rec (id, FALSE))) | |
309 | return th; | |
310 | ||
3929abe9 | 311 | th = XZALLOC (thread_info); |
3cee93ac CF |
312 | th->id = id; |
313 | th->h = h; | |
314 | th->next = thread_head.next; | |
315 | thread_head.next = th; | |
2dc38344 PA |
316 | add_thread (ptid); |
317 | /* Set the debug registers for the new thread if they are used. */ | |
fa4ba8da PM |
318 | if (debug_registers_used) |
319 | { | |
320 | /* Only change the value of the debug registers. */ | |
321 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
322 | CHECK (GetThreadContext (th->h, &th->context)); | |
323 | th->context.Dr0 = dr[0]; | |
324 | th->context.Dr1 = dr[1]; | |
325 | th->context.Dr2 = dr[2]; | |
326 | th->context.Dr3 = dr[3]; | |
6537bb24 | 327 | th->context.Dr6 = DR6_CLEAR_VALUE; |
fa4ba8da PM |
328 | th->context.Dr7 = dr[7]; |
329 | CHECK (SetThreadContext (th->h, &th->context)); | |
330 | th->context.ContextFlags = 0; | |
331 | } | |
3cee93ac | 332 | return th; |
24e60978 SC |
333 | } |
334 | ||
3cee93ac CF |
335 | /* Clear out any old thread list and reintialize it to a |
336 | pristine state. */ | |
24e60978 | 337 | static void |
dc05df57 | 338 | windows_init_thread_list (void) |
24e60978 | 339 | { |
3cee93ac CF |
340 | thread_info *th = &thread_head; |
341 | ||
dc05df57 | 342 | DEBUG_EVENTS (("gdb: windows_init_thread_list\n")); |
3cee93ac CF |
343 | init_thread_list (); |
344 | while (th->next != NULL) | |
24e60978 | 345 | { |
3cee93ac CF |
346 | thread_info *here = th->next; |
347 | th->next = here->next; | |
b8c9b27d | 348 | xfree (here); |
24e60978 | 349 | } |
059198c1 | 350 | thread_head.next = NULL; |
3cee93ac CF |
351 | } |
352 | ||
353 | /* Delete a thread from the list of threads */ | |
354 | static void | |
dc05df57 | 355 | windows_delete_thread (ptid_t ptid) |
3cee93ac CF |
356 | { |
357 | thread_info *th; | |
2dc38344 PA |
358 | DWORD id; |
359 | ||
360 | gdb_assert (ptid_get_tid (ptid) != 0); | |
361 | ||
362 | id = ptid_get_tid (ptid); | |
3cee93ac CF |
363 | |
364 | if (info_verbose) | |
2dc38344 PA |
365 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid)); |
366 | delete_thread (ptid); | |
3cee93ac CF |
367 | |
368 | for (th = &thread_head; | |
369 | th->next != NULL && th->next->id != id; | |
370 | th = th->next) | |
371 | continue; | |
372 | ||
373 | if (th->next != NULL) | |
24e60978 | 374 | { |
3cee93ac CF |
375 | thread_info *here = th->next; |
376 | th->next = here->next; | |
b8c9b27d | 377 | xfree (here); |
24e60978 SC |
378 | } |
379 | } | |
380 | ||
3cee93ac | 381 | static void |
dc05df57 | 382 | do_windows_fetch_inferior_registers (struct regcache *regcache, int r) |
24e60978 | 383 | { |
1e37c281 | 384 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
20a6ec49 MD |
385 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
386 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
1e37c281 | 387 | long l; |
6c7de422 | 388 | |
3ade5333 | 389 | if (!current_thread) |
d6dc8049 CF |
390 | return; /* Windows sometimes uses a non-existent thread id in its |
391 | events */ | |
3ade5333 CF |
392 | |
393 | if (current_thread->reload_context) | |
394 | { | |
cb832706 | 395 | #ifdef __COPY_CONTEXT_SIZE |
a244bdca CF |
396 | if (have_saved_context) |
397 | { | |
398 | /* Lie about where the program actually is stopped since cygwin has informed us that | |
399 | we should consider the signal to have occurred at another location which is stored | |
400 | in "saved_context. */ | |
401 | memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE); | |
402 | have_saved_context = 0; | |
403 | } | |
404 | else | |
cb832706 | 405 | #endif |
a244bdca CF |
406 | { |
407 | thread_info *th = current_thread; | |
408 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
409 | GetThreadContext (th->h, &th->context); | |
2b008701 | 410 | /* Copy dr values from that thread. |
88616312 PM |
411 | But only if there were not modified since last stop. PR gdb/2388 */ |
412 | if (!debug_registers_changed) | |
413 | { | |
414 | dr[0] = th->context.Dr0; | |
415 | dr[1] = th->context.Dr1; | |
416 | dr[2] = th->context.Dr2; | |
417 | dr[3] = th->context.Dr3; | |
418 | dr[6] = th->context.Dr6; | |
419 | dr[7] = th->context.Dr7; | |
420 | } | |
a244bdca | 421 | } |
3ade5333 CF |
422 | current_thread->reload_context = 0; |
423 | } | |
424 | ||
20a6ec49 | 425 | if (r == I387_FISEG_REGNUM (tdep)) |
1e37c281 | 426 | { |
8e860359 | 427 | l = *((long *) context_offset) & 0xffff; |
56be3814 | 428 | regcache_raw_supply (regcache, r, (char *) &l); |
1e37c281 | 429 | } |
20a6ec49 | 430 | else if (r == I387_FOP_REGNUM (tdep)) |
1e37c281 | 431 | { |
8e860359 | 432 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
56be3814 | 433 | regcache_raw_supply (regcache, r, (char *) &l); |
1e37c281 JM |
434 | } |
435 | else if (r >= 0) | |
56be3814 | 436 | regcache_raw_supply (regcache, r, context_offset); |
3cee93ac | 437 | else |
24e60978 | 438 | { |
20a6ec49 | 439 | for (r = 0; r < gdbarch_num_regs (gdbarch); r++) |
dc05df57 | 440 | do_windows_fetch_inferior_registers (regcache, r); |
24e60978 | 441 | } |
3cee93ac CF |
442 | } |
443 | ||
444 | static void | |
28439f5e PA |
445 | windows_fetch_inferior_registers (struct target_ops *ops, |
446 | struct regcache *regcache, int r) | |
3cee93ac | 447 | { |
2dc38344 | 448 | current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE); |
d6dc8049 CF |
449 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
450 | thread id in its events */ | |
3ade5333 | 451 | if (current_thread) |
dc05df57 | 452 | do_windows_fetch_inferior_registers (regcache, r); |
3cee93ac CF |
453 | } |
454 | ||
455 | static void | |
dc05df57 | 456 | do_windows_store_inferior_registers (const struct regcache *regcache, int r) |
3cee93ac | 457 | { |
3ade5333 | 458 | if (!current_thread) |
d6dc8049 | 459 | /* Windows sometimes uses a non-existent thread id in its events */; |
3ade5333 | 460 | else if (r >= 0) |
56be3814 | 461 | regcache_raw_collect (regcache, r, |
822c9732 | 462 | ((char *) ¤t_thread->context) + mappings[r]); |
24e60978 SC |
463 | else |
464 | { | |
40a6adc1 | 465 | for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++) |
dc05df57 | 466 | do_windows_store_inferior_registers (regcache, r); |
24e60978 SC |
467 | } |
468 | } | |
469 | ||
3cee93ac CF |
470 | /* Store a new register value into the current thread context */ |
471 | static void | |
28439f5e PA |
472 | windows_store_inferior_registers (struct target_ops *ops, |
473 | struct regcache *regcache, int r) | |
3cee93ac | 474 | { |
2dc38344 | 475 | current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE); |
d6dc8049 CF |
476 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
477 | thread id in its events */ | |
3ade5333 | 478 | if (current_thread) |
dc05df57 | 479 | do_windows_store_inferior_registers (regcache, r); |
3cee93ac | 480 | } |
24e60978 | 481 | |
33605d39 CF |
482 | /* Get the name of a given module at at given base address. If base_address |
483 | is zero return the first loaded module (which is always the name of the | |
484 | executable). */ | |
3ee6f623 | 485 | static int |
d3653bf6 | 486 | get_module_name (LPVOID base_address, char *dll_name_ret) |
1e37c281 JM |
487 | { |
488 | DWORD len; | |
489 | MODULEINFO mi; | |
490 | int i; | |
8e860359 | 491 | HMODULE dh_buf[1]; |
33605d39 | 492 | HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */ |
1e37c281 | 493 | DWORD cbNeeded; |
33605d39 | 494 | #ifdef __CYGWIN__ |
d0d0ab16 CV |
495 | wchar_t pathbuf[PATH_MAX]; /* Temporary storage prior to converting to |
496 | posix form. PATH_MAX is always enough | |
497 | as long as SO_NAME_MAX_PATH_SIZE is defined | |
498 | as 512. */ | |
33605d39 | 499 | #endif |
1e37c281 | 500 | |
1e37c281 | 501 | cbNeeded = 0; |
33605d39 | 502 | /* Find size of buffer needed to handle list of modules loaded in inferior */ |
2b008701 CF |
503 | if (!EnumProcessModules (current_process_handle, DllHandle, |
504 | sizeof (HMODULE), &cbNeeded) || !cbNeeded) | |
1e37c281 JM |
505 | goto failed; |
506 | ||
33605d39 | 507 | /* Allocate correct amount of space for module list */ |
8e860359 | 508 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
509 | if (!DllHandle) |
510 | goto failed; | |
511 | ||
33605d39 | 512 | /* Get the list of modules */ |
2b008701 | 513 | if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded, |
33605d39 | 514 | &cbNeeded)) |
1e37c281 JM |
515 | goto failed; |
516 | ||
29fe111d | 517 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 | 518 | { |
33605d39 | 519 | /* Get information on this module */ |
2b008701 CF |
520 | if (!GetModuleInformation (current_process_handle, DllHandle[i], |
521 | &mi, sizeof (mi))) | |
8a3fe4f8 | 522 | error (_("Can't get module info")); |
1e37c281 | 523 | |
d3653bf6 | 524 | if (!base_address || mi.lpBaseOfDll == base_address) |
33605d39 CF |
525 | { |
526 | /* Try to find the name of the given module */ | |
d0d0ab16 CV |
527 | #ifdef __CYGWIN__ |
528 | /* Cygwin prefers that the path be in /x/y/z format */ | |
529 | len = GetModuleFileNameExW (current_process_handle, | |
530 | DllHandle[i], pathbuf, PATH_MAX); | |
531 | if (len == 0) | |
532 | error (_("Error getting dll name: %lu."), GetLastError ()); | |
533 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, dll_name_ret, | |
534 | PATH_MAX) < 0) | |
535 | error (_("Error converting dll name to POSIX: %d."), errno); | |
536 | #else | |
2b008701 | 537 | len = GetModuleFileNameExA (current_process_handle, |
d0d0ab16 | 538 | DllHandle[i], dll_name_ret, MAX_PATH); |
33605d39 CF |
539 | if (len == 0) |
540 | error (_("Error getting dll name: %u."), (unsigned) GetLastError ()); | |
33605d39 CF |
541 | #endif |
542 | return 1; /* success */ | |
543 | } | |
1e37c281 JM |
544 | } |
545 | ||
546 | failed: | |
547 | dll_name_ret[0] = '\0'; | |
33605d39 | 548 | return 0; /* failure */ |
1e37c281 JM |
549 | } |
550 | ||
450005e7 CF |
551 | /* Encapsulate the information required in a call to |
552 | symbol_file_add_args */ | |
8a892701 CF |
553 | struct safe_symbol_file_add_args |
554 | { | |
555 | char *name; | |
556 | int from_tty; | |
557 | struct section_addr_info *addrs; | |
558 | int mainline; | |
559 | int flags; | |
7c5c87c0 | 560 | struct ui_file *err, *out; |
8a892701 CF |
561 | struct objfile *ret; |
562 | }; | |
563 | ||
02e423b9 | 564 | /* Maintain a linked list of "so" information. */ |
3ee6f623 | 565 | struct lm_info |
02e423b9 | 566 | { |
d3653bf6 | 567 | LPVOID load_addr; |
3ee6f623 CF |
568 | }; |
569 | ||
570 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 571 | |
450005e7 CF |
572 | /* Call symbol_file_add with stderr redirected. We don't care if there |
573 | are errors. */ | |
8a892701 CF |
574 | static int |
575 | safe_symbol_file_add_stub (void *argv) | |
576 | { | |
3ee6f623 | 577 | #define p ((struct safe_symbol_file_add_args *) argv) |
7eedccfa PP |
578 | const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0) |
579 | | (p->mainline ? SYMFILE_MAINLINE : 0)); | |
580 | p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags); | |
8a892701 CF |
581 | return !!p->ret; |
582 | #undef p | |
583 | } | |
584 | ||
450005e7 | 585 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 586 | static void |
7c5c87c0 | 587 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 588 | { |
8e860359 | 589 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 590 | gdb_flush (gdb_stderr); |
7c5c87c0 | 591 | gdb_flush (gdb_stdout); |
d3ff4a77 | 592 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 593 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 594 | gdb_stderr = sp->err; |
9d3789f7 | 595 | gdb_stdout = sp->out; |
8e860359 | 596 | #undef sp |
8a892701 CF |
597 | } |
598 | ||
450005e7 | 599 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
600 | static struct objfile * |
601 | safe_symbol_file_add (char *name, int from_tty, | |
602 | struct section_addr_info *addrs, | |
603 | int mainline, int flags) | |
8a892701 CF |
604 | { |
605 | struct safe_symbol_file_add_args p; | |
606 | struct cleanup *cleanup; | |
607 | ||
7c5c87c0 | 608 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 609 | |
7c5c87c0 CF |
610 | p.err = gdb_stderr; |
611 | p.out = gdb_stdout; | |
450005e7 | 612 | gdb_flush (gdb_stderr); |
7c5c87c0 | 613 | gdb_flush (gdb_stdout); |
d3ff4a77 | 614 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 615 | gdb_stdout = ui_file_new (); |
8a892701 CF |
616 | p.name = name; |
617 | p.from_tty = from_tty; | |
618 | p.addrs = addrs; | |
619 | p.mainline = mainline; | |
620 | p.flags = flags; | |
621 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
622 | ||
623 | do_cleanups (cleanup); | |
624 | return p.ret; | |
625 | } | |
626 | ||
de1b3c3d | 627 | static struct so_list * |
dc05df57 | 628 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 629 | { |
3ee6f623 | 630 | struct so_list *so; |
d0d0ab16 CV |
631 | char *p; |
632 | #ifndef __CYGWIN__ | |
3f8ad85b CF |
633 | char buf[MAX_PATH + 1]; |
634 | char cwd[MAX_PATH + 1]; | |
3f8ad85b CF |
635 | WIN32_FIND_DATA w32_fd; |
636 | HANDLE h = FindFirstFile(name, &w32_fd); | |
3f8ad85b | 637 | |
6badb179 CF |
638 | if (h == INVALID_HANDLE_VALUE) |
639 | strcpy (buf, name); | |
640 | else | |
3f8ad85b | 641 | { |
c914e0cc CF |
642 | FindClose (h); |
643 | strcpy (buf, name); | |
644 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
645 | { | |
646 | p = strrchr (buf, '\\'); | |
647 | if (p) | |
648 | p[1] = '\0'; | |
649 | SetCurrentDirectory (buf); | |
650 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
651 | SetCurrentDirectory (cwd); | |
652 | } | |
3f8ad85b | 653 | } |
3ee6f623 CF |
654 | if (strcasecmp (buf, "ntdll.dll") == 0) |
655 | { | |
656 | GetSystemDirectory (buf, sizeof (buf)); | |
657 | strcat (buf, "\\ntdll.dll"); | |
658 | } | |
d0d0ab16 CV |
659 | #else |
660 | wchar_t buf[PATH_MAX]; | |
661 | ||
662 | buf[0] = L'\0'; | |
663 | if (access (name, F_OK) != 0) | |
664 | { | |
665 | if (strcasecmp (name, "ntdll.dll") == 0) | |
666 | { | |
667 | GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t)); | |
668 | wcscat (buf, L"\\ntdll.dll"); | |
669 | } | |
670 | } | |
671 | #endif | |
3929abe9 | 672 | so = XZALLOC (struct so_list); |
3ee6f623 CF |
673 | so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info)); |
674 | so->lm_info->load_addr = load_addr; | |
de1b3c3d | 675 | strcpy (so->so_original_name, name); |
10325bc5 PA |
676 | #ifndef __CYGWIN__ |
677 | strcpy (so->so_name, buf); | |
678 | #else | |
d0d0ab16 CV |
679 | if (buf[0]) |
680 | cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name, | |
681 | SO_NAME_MAX_PATH_SIZE); | |
682 | else | |
683 | { | |
684 | char *rname = canonicalize_file_name (name); | |
685 | if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE) | |
686 | { | |
687 | strcpy (so->so_name, rname); | |
688 | free (rname); | |
689 | } | |
690 | else | |
691 | error (_("dll path too long")); | |
692 | } | |
de1b3c3d PA |
693 | /* Record cygwin1.dll .text start/end. */ |
694 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
695 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
696 | { | |
697 | bfd *abfd; | |
698 | asection *text = NULL; | |
699 | CORE_ADDR text_vma; | |
8e860359 | 700 | |
610dd7f9 | 701 | abfd = bfd_openr (so->so_name, "pei-i386"); |
a244bdca | 702 | |
de1b3c3d PA |
703 | if (!abfd) |
704 | return so; | |
705 | ||
706 | if (bfd_check_format (abfd, bfd_object)) | |
707 | text = bfd_get_section_by_name (abfd, ".text"); | |
708 | ||
709 | if (!text) | |
710 | { | |
711 | bfd_close (abfd); | |
712 | return so; | |
713 | } | |
714 | ||
715 | /* The symbols in a dll are offset by 0x1000, which is the the | |
716 | offset from 0 of the first byte in an image - because of the | |
717 | file header and the section alignment. */ | |
dc05df57 CF |
718 | cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) load_addr + 0x1000); |
719 | cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text); | |
de1b3c3d PA |
720 | |
721 | bfd_close (abfd); | |
722 | } | |
10325bc5 | 723 | #endif |
de1b3c3d PA |
724 | |
725 | return so; | |
8e860359 CF |
726 | } |
727 | ||
3ee6f623 | 728 | static char * |
dfe7f3ac CF |
729 | get_image_name (HANDLE h, void *address, int unicode) |
730 | { | |
d0d0ab16 CV |
731 | #ifdef __CYGWIN__ |
732 | static char buf[PATH_MAX]; | |
733 | #else | |
dfe7f3ac | 734 | static char buf[(2 * MAX_PATH) + 1]; |
d0d0ab16 | 735 | #endif |
dfe7f3ac CF |
736 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); |
737 | char *address_ptr; | |
738 | int len = 0; | |
739 | char b[2]; | |
5732a500 | 740 | SIZE_T done; |
dfe7f3ac CF |
741 | |
742 | /* Attempt to read the name of the dll that was detected. | |
743 | This is documented to work only when actively debugging | |
744 | a program. It will not work for attached processes. */ | |
745 | if (address == NULL) | |
746 | return NULL; | |
747 | ||
dfe7f3ac CF |
748 | /* See if we could read the address of a string, and that the |
749 | address isn't null. */ | |
9f476a01 | 750 | if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) |
6f17862b | 751 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
752 | return NULL; |
753 | ||
754 | /* Find the length of the string */ | |
6f17862b CF |
755 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
756 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
757 | continue; | |
dfe7f3ac CF |
758 | |
759 | if (!unicode) | |
760 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
761 | else | |
762 | { | |
763 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
764 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
765 | &done); | |
d0d0ab16 CV |
766 | #ifdef __CYGWIN__ |
767 | wcstombs (buf, unicode_address, PATH_MAX); | |
768 | #else | |
769 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf, | |
770 | 0, 0); | |
771 | #endif | |
dfe7f3ac CF |
772 | } |
773 | ||
774 | return buf; | |
775 | } | |
776 | ||
24e60978 SC |
777 | /* Wait for child to do something. Return pid of child, or -1 in case |
778 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 779 | static int |
0a65a603 | 780 | handle_load_dll (void *dummy) |
24e60978 | 781 | { |
3a4b77d8 | 782 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
d0d0ab16 CV |
783 | #ifdef __CYGWIN__ |
784 | char dll_buf[PATH_MAX]; | |
785 | #else | |
3cee93ac | 786 | char dll_buf[MAX_PATH + 1]; |
d0d0ab16 | 787 | #endif |
450005e7 | 788 | char *dll_name = NULL; |
3cee93ac | 789 | |
3a4b77d8 | 790 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 791 | |
d3653bf6 | 792 | if (!get_module_name (event->lpBaseOfDll, dll_buf)) |
8e860359 | 793 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 794 | |
1e37c281 | 795 | dll_name = dll_buf; |
24e60978 | 796 | |
dfe7f3ac | 797 | if (*dll_name == '\0') |
de1b3c3d PA |
798 | dll_name = get_image_name (current_process_handle, |
799 | event->lpImageName, event->fUnicode); | |
3cee93ac CF |
800 | if (!dll_name) |
801 | return 1; | |
802 | ||
dc05df57 | 803 | solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll); |
de1b3c3d | 804 | solib_end = solib_end->next; |
450005e7 | 805 | |
a74ce742 PM |
806 | DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name, |
807 | host_address_to_string (solib_end->lm_info->load_addr))); | |
7488902c | 808 | |
450005e7 CF |
809 | return 1; |
810 | } | |
811 | ||
3ee6f623 | 812 | static void |
dc05df57 | 813 | windows_free_so (struct so_list *so) |
3ee6f623 | 814 | { |
3ee6f623 CF |
815 | if (so->lm_info) |
816 | xfree (so->lm_info); | |
de1b3c3d | 817 | xfree (so); |
3cb8e7f6 CF |
818 | } |
819 | ||
d3ff4a77 | 820 | static int |
0a65a603 | 821 | handle_unload_dll (void *dummy) |
d3ff4a77 | 822 | { |
d3653bf6 | 823 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 824 | struct so_list *so; |
d3ff4a77 CF |
825 | |
826 | for (so = &solib_start; so->next != NULL; so = so->next) | |
3ee6f623 | 827 | if (so->next->lm_info->load_addr == lpBaseOfDll) |
d3ff4a77 | 828 | { |
3ee6f623 | 829 | struct so_list *sodel = so->next; |
d3ff4a77 CF |
830 | so->next = sodel->next; |
831 | if (!so->next) | |
832 | solib_end = so; | |
7488902c PM |
833 | DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name)); |
834 | ||
dc05df57 | 835 | windows_free_so (sodel); |
3929abe9 | 836 | solib_add (NULL, 0, NULL, auto_solib_add); |
d3ff4a77 CF |
837 | return 1; |
838 | } | |
3929abe9 | 839 | |
ecc13e53 JB |
840 | /* We did not find any DLL that was previously loaded at this address, |
841 | so register a complaint. We do not report an error, because we have | |
842 | observed that this may be happening under some circumstances. For | |
843 | instance, running 32bit applications on x64 Windows causes us to receive | |
844 | 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these | |
845 | events are apparently caused by the WOW layer, the interface between | |
846 | 32bit and 64bit worlds). */ | |
847 | complaint (&symfile_complaints, _("dll starting at %s not found."), | |
848 | host_address_to_string (lpBaseOfDll)); | |
d3ff4a77 CF |
849 | |
850 | return 0; | |
851 | } | |
852 | ||
450005e7 | 853 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 854 | static void |
dc05df57 | 855 | windows_clear_solib (void) |
450005e7 | 856 | { |
450005e7 CF |
857 | solib_start.next = NULL; |
858 | solib_end = &solib_start; | |
450005e7 | 859 | } |
295732ea | 860 | |
450005e7 CF |
861 | /* Load DLL symbol info. */ |
862 | void | |
7470a420 | 863 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 864 | { |
8e860359 | 865 | int n; |
450005e7 | 866 | dont_repeat (); |
8e860359 | 867 | |
450005e7 | 868 | if (args == NULL) |
8a3fe4f8 | 869 | error (_("dll-symbols requires a file name")); |
450005e7 | 870 | |
8e860359 CF |
871 | n = strlen (args); |
872 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
873 | { | |
874 | char *newargs = (char *) alloca (n + 4 + 1); | |
875 | strcpy (newargs, args); | |
876 | strcat (newargs, ".dll"); | |
877 | args = newargs; | |
878 | } | |
879 | ||
7470a420 | 880 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 881 | } |
450005e7 | 882 | |
3cee93ac CF |
883 | /* Handle DEBUG_STRING output from child process. |
884 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
885 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
886 | static int | |
887 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
888 | { | |
a244bdca CF |
889 | char *s = NULL; |
890 | int retval = 0; | |
3cee93ac CF |
891 | |
892 | if (!target_read_string | |
2c647436 PM |
893 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, |
894 | &s, 1024, 0) | |
3cee93ac | 895 | || !s || !*s) |
a244bdca CF |
896 | /* nothing to do */; |
897 | else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0) | |
3cee93ac | 898 | { |
10325bc5 | 899 | #ifdef __CYGWIN__ |
d3a09475 | 900 | if (strncmp (s, "cYg", 3) != 0) |
10325bc5 | 901 | #endif |
8a3fe4f8 | 902 | warning (("%s"), s); |
3cee93ac | 903 | } |
cb832706 | 904 | #ifdef __COPY_CONTEXT_SIZE |
d3a09475 | 905 | else |
3cee93ac | 906 | { |
a244bdca CF |
907 | /* Got a cygwin signal marker. A cygwin signal is followed by the signal number |
908 | itself and then optionally followed by the thread id and address to saved context | |
909 | within the DLL. If these are supplied, then the given thread is assumed to have | |
910 | issued the signal and the context from the thread is assumed to be stored at the | |
911 | given address in the inferior. Tell gdb to treat this like a real signal. */ | |
3cee93ac | 912 | char *p; |
3929abe9 | 913 | int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
a244bdca | 914 | int gotasig = target_signal_from_host (sig); |
0714f9bf SS |
915 | ourstatus->value.sig = gotasig; |
916 | if (gotasig) | |
a244bdca CF |
917 | { |
918 | LPCVOID x; | |
919 | DWORD n; | |
920 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
921 | retval = strtoul (p, &p, 0); | |
922 | if (!retval) | |
923 | retval = main_thread_id; | |
924 | else if ((x = (LPCVOID) strtoul (p, &p, 0)) | |
925 | && ReadProcessMemory (current_process_handle, x, | |
926 | &saved_context, __COPY_CONTEXT_SIZE, &n) | |
927 | && n == __COPY_CONTEXT_SIZE) | |
928 | have_saved_context = 1; | |
929 | current_event.dwThreadId = retval; | |
930 | } | |
3cee93ac | 931 | } |
cb832706 | 932 | #endif |
3cee93ac | 933 | |
a244bdca CF |
934 | if (s) |
935 | xfree (s); | |
936 | return retval; | |
3cee93ac | 937 | } |
24e60978 | 938 | |
c1748f97 PM |
939 | static int |
940 | display_selector (HANDLE thread, DWORD sel) | |
941 | { | |
942 | LDT_ENTRY info; | |
943 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
944 | { | |
945 | int base, limit; | |
946 | printf_filtered ("0x%03lx: ", sel); | |
947 | if (!info.HighWord.Bits.Pres) | |
baa93fa6 CF |
948 | { |
949 | puts_filtered ("Segment not present\n"); | |
950 | return 0; | |
951 | } | |
c1748f97 PM |
952 | base = (info.HighWord.Bits.BaseHi << 24) + |
953 | (info.HighWord.Bits.BaseMid << 16) | |
954 | + info.BaseLow; | |
955 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
956 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 957 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
958 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
959 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 960 | puts_filtered(" 32-bit "); |
c1748f97 | 961 | else |
baa93fa6 | 962 | puts_filtered(" 16-bit "); |
c1748f97 PM |
963 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
964 | { | |
965 | case 0: | |
baa93fa6 CF |
966 | puts_filtered ("Data (Read-Only, Exp-up"); |
967 | break; | |
c1748f97 | 968 | case 1: |
baa93fa6 CF |
969 | puts_filtered ("Data (Read/Write, Exp-up"); |
970 | break; | |
c1748f97 | 971 | case 2: |
baa93fa6 CF |
972 | puts_filtered ("Unused segment ("); |
973 | break; | |
c1748f97 | 974 | case 3: |
baa93fa6 CF |
975 | puts_filtered ("Data (Read/Write, Exp-down"); |
976 | break; | |
c1748f97 | 977 | case 4: |
baa93fa6 CF |
978 | puts_filtered ("Code (Exec-Only, N.Conf"); |
979 | break; | |
c1748f97 | 980 | case 5: |
baa93fa6 | 981 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
982 | break; |
983 | case 6: | |
baa93fa6 | 984 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
985 | break; |
986 | case 7: | |
baa93fa6 | 987 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
988 | break; |
989 | default: | |
990 | printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); | |
991 | } | |
992 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 993 | puts_filtered(", N.Acc"); |
c1748f97 PM |
994 | puts_filtered (")\n"); |
995 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
996 | puts_filtered("System selector "); | |
997 | printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); | |
998 | if (info.HighWord.Bits.Granularity) | |
baa93fa6 | 999 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
1000 | else |
1001 | puts_filtered ("Byte granular.\n"); | |
1002 | return 1; | |
1003 | } | |
1004 | else | |
1005 | { | |
1006 | printf_filtered ("Invalid selector 0x%lx.\n",sel); | |
1007 | return 0; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | static void | |
1012 | display_selectors (char * args, int from_tty) | |
1013 | { | |
1014 | if (!current_thread) | |
1015 | { | |
1016 | puts_filtered ("Impossible to display selectors now.\n"); | |
1017 | return; | |
1018 | } | |
1019 | if (!args) | |
1020 | { | |
1021 | ||
1022 | puts_filtered ("Selector $cs\n"); | |
1023 | display_selector (current_thread->h, | |
baa93fa6 | 1024 | current_thread->context.SegCs); |
c1748f97 PM |
1025 | puts_filtered ("Selector $ds\n"); |
1026 | display_selector (current_thread->h, | |
baa93fa6 | 1027 | current_thread->context.SegDs); |
c1748f97 PM |
1028 | puts_filtered ("Selector $es\n"); |
1029 | display_selector (current_thread->h, | |
baa93fa6 | 1030 | current_thread->context.SegEs); |
c1748f97 PM |
1031 | puts_filtered ("Selector $ss\n"); |
1032 | display_selector (current_thread->h, | |
baa93fa6 | 1033 | current_thread->context.SegSs); |
c1748f97 PM |
1034 | puts_filtered ("Selector $fs\n"); |
1035 | display_selector (current_thread->h, | |
1036 | current_thread->context.SegFs); | |
1037 | puts_filtered ("Selector $gs\n"); | |
1038 | display_selector (current_thread->h, | |
baa93fa6 | 1039 | current_thread->context.SegGs); |
c1748f97 PM |
1040 | } |
1041 | else | |
1042 | { | |
1043 | int sel; | |
1044 | sel = parse_and_eval_long (args); | |
1045 | printf_filtered ("Selector \"%s\"\n",args); | |
1046 | display_selector (current_thread->h, sel); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | static struct cmd_list_element *info_w32_cmdlist = NULL; | |
1051 | ||
1052 | static void | |
1053 | info_w32_command (char *args, int from_tty) | |
1054 | { | |
1055 | help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); | |
1056 | } | |
1057 | ||
1058 | ||
7393af7c | 1059 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
a74ce742 PM |
1060 | printf_unfiltered ("gdb: Target exception %s at %s\n", x, \ |
1061 | host_address_to_string (\ | |
1062 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)) | |
7393af7c | 1063 | |
36339ecd | 1064 | static int |
450005e7 | 1065 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 1066 | { |
3cee93ac | 1067 | thread_info *th; |
29fe111d | 1068 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 1069 | |
29fe111d | 1070 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1071 | |
3cee93ac CF |
1072 | /* Record the context of the current thread */ |
1073 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 1074 | |
29fe111d | 1075 | switch (code) |
24e60978 | 1076 | { |
1ef980b9 | 1077 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c PM |
1078 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
1079 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
10325bc5 | 1080 | #ifdef __CYGWIN__ |
8da8e0b3 | 1081 | { |
a244bdca CF |
1082 | /* See if the access violation happened within the cygwin DLL itself. Cygwin uses |
1083 | a kind of exception handling to deal with passed-in invalid addresses. gdb | |
1084 | should not treat these as real SEGVs since they will be silently handled by | |
1085 | cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process | |
1086 | and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up | |
1087 | within the text segment of the DLL itself. */ | |
8da8e0b3 | 1088 | char *fn; |
dc05df57 | 1089 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) current_event.u.Exception.ExceptionRecord.ExceptionAddress; |
09280ddf | 1090 | if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end)) |
a244bdca CF |
1091 | || (find_pc_partial_function (addr, &fn, NULL, NULL) |
1092 | && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)) | |
8da8e0b3 CF |
1093 | return 0; |
1094 | } | |
10325bc5 | 1095 | #endif |
7393af7c PM |
1096 | break; |
1097 | case STATUS_STACK_OVERFLOW: | |
1098 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
1ef980b9 | 1099 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
7393af7c PM |
1100 | break; |
1101 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1102 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
1103 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1104 | break; | |
1105 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1106 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
1107 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1108 | break; | |
1109 | case STATUS_FLOAT_INEXACT_RESULT: | |
1110 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
1111 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1112 | break; | |
1113 | case STATUS_FLOAT_INVALID_OPERATION: | |
1114 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
1115 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1116 | break; | |
1117 | case STATUS_FLOAT_OVERFLOW: | |
1118 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
1119 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1120 | break; | |
1121 | case STATUS_FLOAT_STACK_CHECK: | |
1122 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
1123 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 | 1124 | break; |
3b7c8b74 | 1125 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c PM |
1126 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
1127 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1128 | break; | |
3b7c8b74 | 1129 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c PM |
1130 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
1131 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1132 | break; | |
3b7c8b74 | 1133 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1134 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
3b7c8b74 | 1135 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
3b7c8b74 | 1136 | break; |
7393af7c PM |
1137 | case STATUS_INTEGER_OVERFLOW: |
1138 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
1139 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 SC |
1140 | break; |
1141 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1142 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
1ef980b9 SC |
1143 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1144 | break; | |
1145 | case DBG_CONTROL_C: | |
7393af7c | 1146 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
1ef980b9 | 1147 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
1148 | break; |
1149 | case DBG_CONTROL_BREAK: | |
7393af7c | 1150 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
5b421780 | 1151 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
1ef980b9 SC |
1152 | break; |
1153 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1154 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
1ef980b9 SC |
1155 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1156 | break; | |
8227c82d | 1157 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c PM |
1158 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
1159 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1160 | break; | |
1161 | case EXCEPTION_PRIV_INSTRUCTION: | |
1162 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
1163 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1164 | break; | |
1165 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1166 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
8227c82d CF |
1167 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
1168 | break; | |
1ef980b9 | 1169 | default: |
a244bdca | 1170 | /* Treat unhandled first chance exceptions specially. */ |
02e423b9 | 1171 | if (current_event.u.Exception.dwFirstChance) |
a244bdca | 1172 | return -1; |
a74ce742 PM |
1173 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n", |
1174 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1175 | host_address_to_string ( | |
1176 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)); | |
24e60978 | 1177 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 1178 | break; |
24e60978 | 1179 | } |
24e60978 | 1180 | exception_count++; |
7393af7c | 1181 | last_sig = ourstatus->value.sig; |
36339ecd | 1182 | return 1; |
24e60978 SC |
1183 | } |
1184 | ||
3cee93ac CF |
1185 | /* Resume all artificially suspended threads if we are continuing |
1186 | execution */ | |
1187 | static BOOL | |
dc05df57 | 1188 | windows_continue (DWORD continue_status, int id) |
3cee93ac CF |
1189 | { |
1190 | int i; | |
1191 | thread_info *th; | |
1192 | BOOL res; | |
1193 | ||
1c1238a5 | 1194 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%lx, %s);\n", |
7393af7c | 1195 | current_event.dwProcessId, current_event.dwThreadId, |
dfe7f3ac | 1196 | continue_status == DBG_CONTINUE ? |
7393af7c | 1197 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
6537bb24 PA |
1198 | |
1199 | for (th = &thread_head; (th = th->next) != NULL;) | |
1200 | if ((id == -1 || id == (int) th->id) | |
1201 | && th->suspended) | |
1202 | { | |
1203 | if (debug_registers_changed) | |
1204 | { | |
1205 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1206 | th->context.Dr0 = dr[0]; | |
1207 | th->context.Dr1 = dr[1]; | |
1208 | th->context.Dr2 = dr[2]; | |
1209 | th->context.Dr3 = dr[3]; | |
1210 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1211 | th->context.Dr7 = dr[7]; | |
1212 | } | |
1213 | if (th->context.ContextFlags) | |
1214 | { | |
1215 | CHECK (SetThreadContext (th->h, &th->context)); | |
1216 | th->context.ContextFlags = 0; | |
1217 | } | |
1218 | if (th->suspended > 0) | |
1219 | (void) ResumeThread (th->h); | |
1220 | th->suspended = 0; | |
1221 | } | |
1222 | ||
0714f9bf SS |
1223 | res = ContinueDebugEvent (current_event.dwProcessId, |
1224 | current_event.dwThreadId, | |
1225 | continue_status); | |
3cee93ac | 1226 | |
fa4ba8da | 1227 | debug_registers_changed = 0; |
3cee93ac CF |
1228 | return res; |
1229 | } | |
1230 | ||
d6dc8049 CF |
1231 | /* Called in pathological case where Windows fails to send a |
1232 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1233 | static DWORD |
5439edaa | 1234 | fake_create_process (void) |
3ade5333 CF |
1235 | { |
1236 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1237 | current_event.dwProcessId); | |
bf25528d CF |
1238 | if (current_process_handle != NULL) |
1239 | open_process_used = 1; | |
1240 | else | |
1241 | { | |
1242 | error (_("OpenProcess call failed, GetLastError = %lud\n"), | |
1243 | GetLastError ()); | |
1244 | /* We can not debug anything in that case. */ | |
1245 | } | |
3ade5333 | 1246 | main_thread_id = current_event.dwThreadId; |
dc05df57 CF |
1247 | current_thread = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
1248 | current_event.dwThreadId), | |
1249 | current_event.u.CreateThread.hThread); | |
3ade5333 CF |
1250 | return main_thread_id; |
1251 | } | |
1252 | ||
a244bdca | 1253 | static void |
28439f5e PA |
1254 | windows_resume (struct target_ops *ops, |
1255 | ptid_t ptid, int step, enum target_signal sig) | |
a244bdca CF |
1256 | { |
1257 | thread_info *th; | |
1258 | DWORD continue_status = DBG_CONTINUE; | |
1259 | ||
2dc38344 PA |
1260 | /* A specific PTID means `step only this thread id'. */ |
1261 | int resume_all = ptid_equal (ptid, minus_one_ptid); | |
1262 | ||
1263 | /* If we're continuing all threads, it's the current inferior that | |
1264 | should be handled specially. */ | |
1265 | if (resume_all) | |
1266 | ptid = inferior_ptid; | |
a244bdca CF |
1267 | |
1268 | if (sig != TARGET_SIGNAL_0) | |
1269 | { | |
1270 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1271 | { | |
1272 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1273 | } | |
1274 | else if (sig == last_sig) | |
1275 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1276 | else | |
1277 | #if 0 | |
1278 | /* This code does not seem to work, because | |
1279 | the kernel does probably not consider changes in the ExceptionRecord | |
1280 | structure when passing the exception to the inferior. | |
1281 | Note that this seems possible in the exception handler itself. */ | |
1282 | { | |
1283 | int i; | |
1284 | for (i = 0; xlate[i].them != -1; i++) | |
1285 | if (xlate[i].us == sig) | |
1286 | { | |
1287 | current_event.u.Exception.ExceptionRecord.ExceptionCode = | |
1288 | xlate[i].them; | |
1289 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1290 | break; | |
1291 | } | |
1292 | if (continue_status == DBG_CONTINUE) | |
1293 | { | |
1294 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1295 | } | |
1296 | } | |
1297 | #endif | |
1298 | DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n", | |
1299 | last_sig)); | |
1300 | } | |
1301 | ||
1302 | last_sig = TARGET_SIGNAL_0; | |
1303 | ||
dc05df57 | 1304 | DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n", |
2dc38344 | 1305 | ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig)); |
a244bdca CF |
1306 | |
1307 | /* Get context for currently selected thread */ | |
2dc38344 | 1308 | th = thread_rec (ptid_get_tid (inferior_ptid), FALSE); |
a244bdca CF |
1309 | if (th) |
1310 | { | |
1311 | if (step) | |
1312 | { | |
1313 | /* Single step by setting t bit */ | |
a97b0ac8 UW |
1314 | struct regcache *regcache = get_current_regcache (); |
1315 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1316 | windows_fetch_inferior_registers (ops, regcache, | |
1317 | gdbarch_ps_regnum (gdbarch)); | |
a244bdca CF |
1318 | th->context.EFlags |= FLAG_TRACE_BIT; |
1319 | } | |
1320 | ||
1321 | if (th->context.ContextFlags) | |
1322 | { | |
1323 | if (debug_registers_changed) | |
1324 | { | |
1325 | th->context.Dr0 = dr[0]; | |
1326 | th->context.Dr1 = dr[1]; | |
1327 | th->context.Dr2 = dr[2]; | |
1328 | th->context.Dr3 = dr[3]; | |
6537bb24 | 1329 | th->context.Dr6 = DR6_CLEAR_VALUE; |
a244bdca CF |
1330 | th->context.Dr7 = dr[7]; |
1331 | } | |
1332 | CHECK (SetThreadContext (th->h, &th->context)); | |
1333 | th->context.ContextFlags = 0; | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | /* Allow continuing with the same signal that interrupted us. | |
1338 | Otherwise complain. */ | |
1339 | ||
2dc38344 | 1340 | if (resume_all) |
dc05df57 | 1341 | windows_continue (continue_status, -1); |
2dc38344 | 1342 | else |
dc05df57 | 1343 | windows_continue (continue_status, ptid_get_tid (ptid)); |
a244bdca CF |
1344 | } |
1345 | ||
695de547 CF |
1346 | /* Ctrl-C handler used when the inferior is not run in the same console. The |
1347 | handler is in charge of interrupting the inferior using DebugBreakProcess. | |
1348 | Note that this function is not available prior to Windows XP. In this case | |
1349 | we emit a warning. */ | |
1350 | BOOL WINAPI | |
1351 | ctrl_c_handler (DWORD event_type) | |
1352 | { | |
1353 | const int attach_flag = current_inferior ()->attach_flag; | |
1354 | ||
bb0613a5 PM |
1355 | /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */ |
1356 | if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT) | |
695de547 CF |
1357 | return FALSE; |
1358 | ||
1359 | /* If the inferior and the debugger share the same console, do nothing as | |
1360 | the inferior has also received the Ctrl-C event. */ | |
1361 | if (!new_console && !attach_flag) | |
1362 | return TRUE; | |
1363 | ||
1364 | if (!DebugBreakProcess (current_process_handle)) | |
1365 | warning (_("\ | |
1366 | Could not interrupt program. Press Ctrl-c in the program console.")); | |
1367 | ||
1368 | /* Return true to tell that Ctrl-C has been handled. */ | |
1369 | return TRUE; | |
1370 | } | |
1371 | ||
8a892701 | 1372 | /* Get the next event from the child. Return 1 if the event requires |
695de547 | 1373 | handling by WFI (or whatever). */ |
1e37c281 | 1374 | static int |
28439f5e PA |
1375 | get_windows_debug_event (struct target_ops *ops, |
1376 | int pid, struct target_waitstatus *ourstatus) | |
1e37c281 JM |
1377 | { |
1378 | BOOL debug_event; | |
8a892701 | 1379 | DWORD continue_status, event_code; |
87a45c96 | 1380 | thread_info *th; |
8a892701 | 1381 | static thread_info dummy_thread_info; |
450005e7 | 1382 | int retval = 0; |
1e37c281 | 1383 | |
7393af7c | 1384 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 | 1385 | |
8a892701 | 1386 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1387 | goto out; |
1e37c281 JM |
1388 | |
1389 | event_count++; | |
1390 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1391 | |
8a892701 | 1392 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1393 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
87a45c96 | 1394 | th = NULL; |
a244bdca | 1395 | have_saved_context = 0; |
8a892701 CF |
1396 | |
1397 | switch (event_code) | |
1e37c281 JM |
1398 | { |
1399 | case CREATE_THREAD_DEBUG_EVENT: | |
1400 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
1401 | (unsigned) current_event.dwProcessId, |
1402 | (unsigned) current_event.dwThreadId, | |
1403 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac | 1404 | if (saw_create != 1) |
3ade5333 | 1405 | { |
181e7f93 PA |
1406 | struct inferior *inf; |
1407 | inf = find_inferior_pid (current_event.dwProcessId); | |
1408 | if (!saw_create && inf->attach_flag) | |
3ade5333 | 1409 | { |
d6dc8049 CF |
1410 | /* Kludge around a Windows bug where first event is a create |
1411 | thread event. Caused when attached process does not have | |
1412 | a main thread. */ | |
3a3e9ee3 | 1413 | retval = fake_create_process (); |
181e7f93 PA |
1414 | if (retval) |
1415 | saw_create++; | |
3ade5333 CF |
1416 | } |
1417 | break; | |
1418 | } | |
1e37c281 | 1419 | /* Record the existence of this thread */ |
450005e7 | 1420 | retval = current_event.dwThreadId; |
dc05df57 | 1421 | th = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
2dc38344 PA |
1422 | current_event.dwThreadId), |
1423 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
1424 | break; |
1425 | ||
1426 | case EXIT_THREAD_DEBUG_EVENT: | |
1c1238a5 | 1427 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1428 | (unsigned) current_event.dwProcessId, |
1429 | (unsigned) current_event.dwThreadId, | |
1430 | "EXIT_THREAD_DEBUG_EVENT")); | |
87a45c96 CF |
1431 | if (current_event.dwThreadId != main_thread_id) |
1432 | { | |
dc05df57 | 1433 | windows_delete_thread (ptid_build (current_event.dwProcessId, 0, |
2dc38344 | 1434 | current_event.dwThreadId)); |
87a45c96 CF |
1435 | th = &dummy_thread_info; |
1436 | } | |
1e37c281 JM |
1437 | break; |
1438 | ||
1439 | case CREATE_PROCESS_DEBUG_EVENT: | |
1c1238a5 | 1440 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1441 | (unsigned) current_event.dwProcessId, |
1442 | (unsigned) current_event.dwThreadId, | |
1443 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1444 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1445 | if (++saw_create != 1) |
bf25528d | 1446 | break; |
1e37c281 | 1447 | |
dfe7f3ac | 1448 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
87a45c96 | 1449 | if (main_thread_id) |
695de547 CF |
1450 | windows_delete_thread (ptid_build (current_event.dwProcessId, 0, |
1451 | main_thread_id)); | |
9d3789f7 | 1452 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 1453 | /* Add the main thread */ |
dc05df57 | 1454 | th = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
695de547 CF |
1455 | current_event.dwThreadId), |
1456 | current_event.u.CreateProcessInfo.hThread); | |
3a3e9ee3 | 1457 | retval = current_event.dwThreadId; |
1e37c281 JM |
1458 | break; |
1459 | ||
1460 | case EXIT_PROCESS_DEBUG_EVENT: | |
1c1238a5 | 1461 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1462 | (unsigned) current_event.dwProcessId, |
1463 | (unsigned) current_event.dwThreadId, | |
1464 | "EXIT_PROCESS_DEBUG_EVENT")); | |
16d905e2 CF |
1465 | if (!windows_initialization_done) |
1466 | { | |
1467 | target_terminal_ours (); | |
1468 | target_mourn_inferior (); | |
1469 | error (_("During startup program exited with code 0x%x."), | |
1470 | (unsigned int) current_event.u.ExitProcess.dwExitCode); | |
1471 | } | |
1472 | else if (saw_create == 1) | |
1473 | { | |
1474 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1475 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1476 | retval = main_thread_id; | |
1477 | } | |
8a892701 | 1478 | break; |
1e37c281 JM |
1479 | |
1480 | case LOAD_DLL_DEBUG_EVENT: | |
1c1238a5 | 1481 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1482 | (unsigned) current_event.dwProcessId, |
1483 | (unsigned) current_event.dwThreadId, | |
1484 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1485 | CloseHandle (current_event.u.LoadDll.hFile); |
dfe7f3ac CF |
1486 | if (saw_create != 1) |
1487 | break; | |
8a892701 | 1488 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
450005e7 CF |
1489 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1490 | ourstatus->value.integer = 0; | |
9d3789f7 | 1491 | retval = main_thread_id; |
1e37c281 JM |
1492 | break; |
1493 | ||
1494 | case UNLOAD_DLL_DEBUG_EVENT: | |
1c1238a5 | 1495 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1496 | (unsigned) current_event.dwProcessId, |
1497 | (unsigned) current_event.dwThreadId, | |
1498 | "UNLOAD_DLL_DEBUG_EVENT")); | |
dfe7f3ac CF |
1499 | if (saw_create != 1) |
1500 | break; | |
d3ff4a77 | 1501 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
de1b3c3d PA |
1502 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1503 | ourstatus->value.integer = 0; | |
1504 | retval = main_thread_id; | |
d3ff4a77 | 1505 | break; |
1e37c281 JM |
1506 | |
1507 | case EXCEPTION_DEBUG_EVENT: | |
1c1238a5 | 1508 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1509 | (unsigned) current_event.dwProcessId, |
1510 | (unsigned) current_event.dwThreadId, | |
1511 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1512 | if (saw_create != 1) |
1513 | break; | |
a244bdca CF |
1514 | switch (handle_exception (ourstatus)) |
1515 | { | |
1516 | case 0: | |
1517 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1518 | break; | |
1519 | case 1: | |
1520 | retval = current_event.dwThreadId; | |
1521 | break; | |
1522 | case -1: | |
1523 | last_sig = 1; | |
1524 | continue_status = -1; | |
1525 | break; | |
1526 | } | |
1e37c281 JM |
1527 | break; |
1528 | ||
8a892701 | 1529 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1c1238a5 | 1530 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1531 | (unsigned) current_event.dwProcessId, |
1532 | (unsigned) current_event.dwThreadId, | |
1533 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1534 | if (saw_create != 1) |
1535 | break; | |
a244bdca | 1536 | retval = handle_output_debug_string (ourstatus); |
1e37c281 | 1537 | break; |
9d3789f7 | 1538 | |
1e37c281 | 1539 | default: |
dfe7f3ac CF |
1540 | if (saw_create != 1) |
1541 | break; | |
29fe111d CF |
1542 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1543 | (DWORD) current_event.dwProcessId, | |
1544 | (DWORD) current_event.dwThreadId); | |
1545 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
1546 | current_event.dwDebugEventCode); |
1547 | break; | |
1548 | } | |
1549 | ||
dfe7f3ac | 1550 | if (!retval || saw_create != 1) |
a244bdca CF |
1551 | { |
1552 | if (continue_status == -1) | |
02529b48 | 1553 | windows_resume (ops, minus_one_ptid, 0, 1); |
a244bdca | 1554 | else |
dc05df57 | 1555 | CHECK (windows_continue (continue_status, -1)); |
a244bdca | 1556 | } |
450005e7 | 1557 | else |
9d3789f7 | 1558 | { |
2dc38344 PA |
1559 | inferior_ptid = ptid_build (current_event.dwProcessId, 0, |
1560 | retval); | |
3ade5333 | 1561 | current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE); |
9d3789f7 | 1562 | } |
1e37c281 JM |
1563 | |
1564 | out: | |
450005e7 | 1565 | return retval; |
1e37c281 JM |
1566 | } |
1567 | ||
2dc38344 | 1568 | /* Wait for interesting events to occur in the target process. */ |
39f77062 | 1569 | static ptid_t |
117de6a9 | 1570 | windows_wait (struct target_ops *ops, |
47608cb1 | 1571 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
24e60978 | 1572 | { |
2dc38344 | 1573 | int pid = -1; |
39f77062 | 1574 | |
c44537cf CV |
1575 | target_terminal_ours (); |
1576 | ||
24e60978 SC |
1577 | /* We loop when we get a non-standard exception rather than return |
1578 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1579 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
1580 | the birth or death of threads, which mean that the current thread |
1581 | isn't necessarily what you think it is. */ | |
1582 | ||
1583 | while (1) | |
450005e7 | 1584 | { |
c57918b2 | 1585 | int retval; |
2b008701 | 1586 | |
695de547 CF |
1587 | /* If the user presses Ctrl-c while the debugger is waiting |
1588 | for an event, he expects the debugger to interrupt his program | |
1589 | and to get the prompt back. There are two possible situations: | |
1590 | ||
1591 | - The debugger and the program do not share the console, in | |
1592 | which case the Ctrl-c event only reached the debugger. | |
1593 | In that case, the ctrl_c handler will take care of interrupting | |
1594 | the inferior. Note that this case is working starting with | |
1595 | Windows XP. For Windows 2000, Ctrl-C should be pressed in the | |
1596 | inferior console. | |
1597 | ||
1598 | - The debugger and the program share the same console, in which | |
1599 | case both debugger and inferior will receive the Ctrl-c event. | |
1600 | In that case the ctrl_c handler will ignore the event, as the | |
1601 | Ctrl-c event generated inside the inferior will trigger the | |
1602 | expected debug event. | |
1603 | ||
1604 | FIXME: brobecker/2008-05-20: If the inferior receives the | |
1605 | signal first and the delay until GDB receives that signal | |
1606 | is sufficiently long, GDB can sometimes receive the SIGINT | |
1607 | after we have unblocked the CTRL+C handler. This would | |
1608 | lead to the debugger stopping prematurely while handling | |
1609 | the new-thread event that comes with the handling of the SIGINT | |
1610 | inside the inferior, and then stop again immediately when | |
1611 | the user tries to resume the execution in the inferior. | |
1612 | This is a classic race that we should try to fix one day. */ | |
1613 | SetConsoleCtrlHandler (&ctrl_c_handler, TRUE); | |
28439f5e | 1614 | retval = get_windows_debug_event (ops, pid, ourstatus); |
695de547 | 1615 | SetConsoleCtrlHandler (&ctrl_c_handler, FALSE); |
c57918b2 | 1616 | |
450005e7 | 1617 | if (retval) |
2dc38344 | 1618 | return ptid_build (current_event.dwProcessId, 0, retval); |
450005e7 CF |
1619 | else |
1620 | { | |
1621 | int detach = 0; | |
3cee93ac | 1622 | |
98bbd631 AC |
1623 | if (deprecated_ui_loop_hook != NULL) |
1624 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1625 | |
450005e7 | 1626 | if (detach) |
7d85a9c0 | 1627 | windows_kill_inferior (ops); |
450005e7 CF |
1628 | } |
1629 | } | |
24e60978 SC |
1630 | } |
1631 | ||
9d3789f7 | 1632 | static void |
dc05df57 | 1633 | do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching) |
9d3789f7 CF |
1634 | { |
1635 | extern int stop_after_trap; | |
fa4ba8da | 1636 | int i; |
d6b48e9c | 1637 | struct inferior *inf; |
2020b7ab | 1638 | struct thread_info *tp; |
9d3789f7 | 1639 | |
7393af7c | 1640 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 CF |
1641 | event_count = 0; |
1642 | exception_count = 0; | |
bf25528d | 1643 | open_process_used = 0; |
fa4ba8da | 1644 | debug_registers_changed = 0; |
dfe7f3ac | 1645 | debug_registers_used = 0; |
fa4ba8da PM |
1646 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1647 | dr[i] = 0; | |
10325bc5 | 1648 | #ifdef __CYGWIN__ |
de1b3c3d | 1649 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1650 | #endif |
9d3789f7 CF |
1651 | current_event.dwProcessId = pid; |
1652 | memset (¤t_event, 0, sizeof (current_event)); | |
0795be10 | 1653 | push_target (ops); |
cb851954 | 1654 | disable_breakpoints_in_shlibs (); |
dc05df57 | 1655 | windows_clear_solib (); |
9d3789f7 CF |
1656 | clear_proceed_status (); |
1657 | init_wait_for_inferior (); | |
1658 | ||
6c95b8df PA |
1659 | inf = current_inferior (); |
1660 | inferior_appeared (inf, pid); | |
181e7f93 | 1661 | inf->attach_flag = attaching; |
7f9f62ba | 1662 | |
9f9d052e PM |
1663 | /* Make the new process the current inferior, so terminal handling |
1664 | can rely on it. When attaching, we don't know about any thread | |
1665 | id here, but that's OK --- nothing should be referencing the | |
dc05df57 | 1666 | current thread until we report an event out of windows_wait. */ |
9f9d052e PM |
1667 | inferior_ptid = pid_to_ptid (pid); |
1668 | ||
c44537cf | 1669 | terminal_init_inferior_with_pgrp (pid); |
9d3789f7 CF |
1670 | target_terminal_inferior (); |
1671 | ||
16d905e2 | 1672 | windows_initialization_done = 0; |
d6b48e9c | 1673 | inf->stop_soon = STOP_QUIETLY; |
9d3789f7 CF |
1674 | while (1) |
1675 | { | |
1676 | stop_after_trap = 1; | |
ae123ec6 | 1677 | wait_for_inferior (0); |
2020b7ab PA |
1678 | tp = inferior_thread (); |
1679 | if (tp->stop_signal != TARGET_SIGNAL_TRAP) | |
1680 | resume (0, tp->stop_signal); | |
9d3789f7 CF |
1681 | else |
1682 | break; | |
1683 | } | |
eff8332b | 1684 | |
16d905e2 | 1685 | windows_initialization_done = 1; |
d6b48e9c | 1686 | inf->stop_soon = NO_STOP_QUIETLY; |
9d3789f7 CF |
1687 | stop_after_trap = 0; |
1688 | return; | |
1689 | } | |
1690 | ||
616a9dc4 CV |
1691 | /* Try to set or remove a user privilege to the current process. Return -1 |
1692 | if that fails, the previous setting of that privilege otherwise. | |
1693 | ||
1694 | This code is copied from the Cygwin source code and rearranged to allow | |
1695 | dynamically loading of the needed symbols from advapi32 which is only | |
1696 | available on NT/2K/XP. */ | |
1697 | static int | |
1698 | set_process_privilege (const char *privilege, BOOL enable) | |
1699 | { | |
616a9dc4 CV |
1700 | HANDLE token_hdl = NULL; |
1701 | LUID restore_priv; | |
1702 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1703 | int ret = -1; | |
1704 | DWORD size; | |
1705 | ||
616a9dc4 CV |
1706 | if (!OpenProcessToken (GetCurrentProcess (), |
1707 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1708 | &token_hdl)) | |
1709 | goto out; | |
1710 | ||
418c6cb3 | 1711 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1712 | goto out; |
1713 | ||
1714 | new_priv.PrivilegeCount = 1; | |
1715 | new_priv.Privileges[0].Luid = restore_priv; | |
1716 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1717 | ||
1718 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1719 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1720 | goto out; |
1721 | #if 0 | |
1722 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1723 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
dc05df57 | 1724 | windows_attach(). */ |
616a9dc4 CV |
1725 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
1726 | be enabled. GetLastError () returns an correct error code, though. */ | |
1727 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) | |
1728 | goto out; | |
1729 | #endif | |
1730 | ||
1731 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1732 | ||
1733 | out: | |
1734 | if (token_hdl) | |
1735 | CloseHandle (token_hdl); | |
1736 | ||
1737 | return ret; | |
1738 | } | |
1739 | ||
02cc9f49 | 1740 | /* Attach to process PID, then initialize for debugging it. */ |
24e60978 | 1741 | static void |
dc05df57 | 1742 | windows_attach (struct target_ops *ops, char *args, int from_tty) |
24e60978 SC |
1743 | { |
1744 | BOOL ok; | |
559e75c0 | 1745 | DWORD pid; |
24e60978 | 1746 | |
74164c56 | 1747 | pid = parse_pid_to_attach (args); |
24e60978 | 1748 | |
616a9dc4 CV |
1749 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1750 | { | |
1751 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
1752 | printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n"); | |
1753 | } | |
1754 | ||
dc05df57 | 1755 | windows_init_thread_list (); |
9d3789f7 | 1756 | ok = DebugActiveProcess (pid); |
91a175b3 | 1757 | saw_create = 0; |
24e60978 | 1758 | |
10325bc5 | 1759 | #ifdef __CYGWIN__ |
24e60978 | 1760 | if (!ok) |
baa93fa6 CF |
1761 | { |
1762 | /* Try fall back to Cygwin pid */ | |
1763 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); | |
1764 | ||
1765 | if (pid > 0) | |
1766 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
1767 | } |
1768 | #endif | |
baa93fa6 | 1769 | |
10325bc5 PA |
1770 | if (!ok) |
1771 | error (_("Can't attach to process.")); | |
24e60978 | 1772 | |
2b008701 | 1773 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 1774 | |
24e60978 SC |
1775 | if (from_tty) |
1776 | { | |
1777 | char *exec_file = (char *) get_exec_file (0); | |
1778 | ||
1779 | if (exec_file) | |
1780 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1781 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1782 | else |
1783 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1784 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1785 | |
1786 | gdb_flush (gdb_stdout); | |
1787 | } | |
1788 | ||
dc05df57 | 1789 | do_initial_windows_stuff (ops, pid, 1); |
9d3789f7 | 1790 | target_terminal_ours (); |
24e60978 SC |
1791 | } |
1792 | ||
24e60978 | 1793 | static void |
dc05df57 | 1794 | windows_detach (struct target_ops *ops, char *args, int from_tty) |
24e60978 | 1795 | { |
02cc9f49 CV |
1796 | int detached = 1; |
1797 | ||
2b008701 CF |
1798 | ptid_t ptid = {-1}; |
1799 | windows_resume (ops, ptid, 0, TARGET_SIGNAL_0); | |
96998ce7 | 1800 | |
2b008701 CF |
1801 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
1802 | { | |
1803 | error (_("Can't detach process %lu (error %lu)"), | |
1804 | current_event.dwProcessId, GetLastError ()); | |
1805 | detached = 0; | |
02cc9f49 | 1806 | } |
2b008701 CF |
1807 | DebugSetProcessKillOnExit (FALSE); |
1808 | ||
02cc9f49 | 1809 | if (detached && from_tty) |
24e60978 SC |
1810 | { |
1811 | char *exec_file = get_exec_file (0); | |
1812 | if (exec_file == 0) | |
1813 | exec_file = ""; | |
02cc9f49 CV |
1814 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1815 | current_event.dwProcessId); | |
24e60978 SC |
1816 | gdb_flush (gdb_stdout); |
1817 | } | |
7f9f62ba | 1818 | |
39f77062 | 1819 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1820 | detach_inferior (current_event.dwProcessId); |
1821 | ||
0795be10 | 1822 | unpush_target (ops); |
24e60978 SC |
1823 | } |
1824 | ||
3ee6f623 | 1825 | static char * |
dc05df57 | 1826 | windows_pid_to_exec_file (int pid) |
47216e51 | 1827 | { |
10325bc5 | 1828 | #ifdef __CYGWIN__ |
d0d0ab16 CV |
1829 | static char path[PATH_MAX]; |
1830 | ||
33605d39 CF |
1831 | /* Try to find exe name as symlink target of /proc/<pid>/exe */ |
1832 | int nchars; | |
1833 | char procexe[sizeof ("/proc/4294967295/exe")]; | |
2dc38344 | 1834 | sprintf (procexe, "/proc/%u/exe", pid); |
33605d39 CF |
1835 | nchars = readlink (procexe, path, sizeof(path)); |
1836 | if (nchars > 0 && nchars < sizeof (path)) | |
47216e51 | 1837 | { |
33605d39 CF |
1838 | path[nchars] = '\0'; /* Got it */ |
1839 | return path; | |
47216e51 | 1840 | } |
d0d0ab16 CV |
1841 | #else |
1842 | static char path[MAX_PATH + 1]; | |
10325bc5 PA |
1843 | #endif |
1844 | ||
33605d39 CF |
1845 | /* If we get here then either Cygwin is hosed, this isn't a Cygwin version |
1846 | of gdb, or we're trying to debug a non-Cygwin windows executable. */ | |
1847 | if (!get_module_name (0, path)) | |
1848 | path[0] = '\0'; | |
1849 | ||
1850 | return path; | |
47216e51 CV |
1851 | } |
1852 | ||
24e60978 SC |
1853 | /* Print status information about what we're accessing. */ |
1854 | ||
1855 | static void | |
dc05df57 | 1856 | windows_files_info (struct target_ops *ignore) |
24e60978 | 1857 | { |
181e7f93 PA |
1858 | struct inferior *inf = current_inferior (); |
1859 | ||
24e60978 | 1860 | printf_unfiltered ("\tUsing the running image of %s %s.\n", |
181e7f93 PA |
1861 | inf->attach_flag ? "attached" : "child", |
1862 | target_pid_to_str (inferior_ptid)); | |
24e60978 SC |
1863 | } |
1864 | ||
24e60978 | 1865 | static void |
dc05df57 | 1866 | windows_open (char *arg, int from_tty) |
24e60978 | 1867 | { |
8a3fe4f8 | 1868 | error (_("Use the \"run\" command to start a Unix child process.")); |
24e60978 SC |
1869 | } |
1870 | ||
dc05df57 | 1871 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
1872 | EXEC_FILE is the file to run. |
1873 | ALLARGS is a string containing the arguments to the program. | |
1874 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1875 | ||
24e60978 | 1876 | static void |
dc05df57 | 1877 | windows_create_inferior (struct target_ops *ops, char *exec_file, |
136d6dae | 1878 | char *allargs, char **in_env, int from_tty) |
24e60978 | 1879 | { |
41b4aadc | 1880 | #ifdef __CYGWIN__ |
d0d0ab16 CV |
1881 | STARTUPINFOW si; |
1882 | wchar_t real_path[PATH_MAX]; | |
1883 | wchar_t shell[PATH_MAX]; /* Path to shell */ | |
1884 | const char *sh; | |
1885 | wchar_t *toexec; | |
1886 | wchar_t *cygallargs; | |
1887 | wchar_t *args; | |
1888 | size_t len; | |
2becadee CF |
1889 | int tty; |
1890 | int ostdin, ostdout, ostderr; | |
41b4aadc | 1891 | #else |
d0d0ab16 CV |
1892 | STARTUPINFOA si; |
1893 | char real_path[PATH_MAX]; | |
1894 | char shell[MAX_PATH + 1]; /* Path to shell */ | |
1895 | char *toexec; | |
1896 | char *args; | |
41b4aadc CF |
1897 | HANDLE tty; |
1898 | #endif | |
d0d0ab16 CV |
1899 | PROCESS_INFORMATION pi; |
1900 | BOOL ret; | |
1901 | DWORD flags = 0; | |
3cb3b8df | 1902 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
24e60978 SC |
1903 | |
1904 | if (!exec_file) | |
8a3fe4f8 | 1905 | error (_("No executable specified, use `target exec'.")); |
24e60978 SC |
1906 | |
1907 | memset (&si, 0, sizeof (si)); | |
1908 | si.cb = sizeof (si); | |
1909 | ||
d0d0ab16 CV |
1910 | if (new_group) |
1911 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1912 | ||
1913 | if (new_console) | |
1914 | flags |= CREATE_NEW_CONSOLE; | |
1915 | ||
10325bc5 | 1916 | #ifdef __CYGWIN__ |
349b409f | 1917 | if (!useshell) |
dfe7f3ac | 1918 | { |
d0d0ab16 CV |
1919 | flags |= DEBUG_ONLY_THIS_PROCESS; |
1920 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path, | |
1921 | PATH_MAX * sizeof (wchar_t)) < 0) | |
1922 | error (_("Error starting executable: %d"), errno); | |
dfe7f3ac | 1923 | toexec = real_path; |
d0d0ab16 CV |
1924 | len = mbstowcs (NULL, allargs, 0) + 1; |
1925 | if (len == (size_t) -1) | |
1926 | error (_("Error starting executable: %d"), errno); | |
1927 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
1928 | mbstowcs (cygallargs, allargs, len); | |
dfe7f3ac CF |
1929 | } |
1930 | else | |
1931 | { | |
349b409f CF |
1932 | sh = getenv ("SHELL"); |
1933 | if (!sh) | |
1934 | sh = "/bin/sh"; | |
d0d0ab16 CV |
1935 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, PATH_MAX) < 0) |
1936 | error (_("Error starting executable via shell: %d"), errno); | |
1937 | len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0) | |
1938 | + mbstowcs (NULL, allargs, 0) + 2; | |
1939 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
1940 | swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs); | |
dfe7f3ac | 1941 | toexec = shell; |
d0d0ab16 | 1942 | flags |= DEBUG_PROCESS; |
dfe7f3ac | 1943 | } |
d0d0ab16 CV |
1944 | args = (wchar_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2) |
1945 | * sizeof (wchar_t)); | |
1946 | wcscpy (args, toexec); | |
1947 | wcscat (args, L" "); | |
1948 | wcscat (args, cygallargs); | |
e88c49c3 | 1949 | /* Prepare the environment vars for CreateProcess. */ |
002c07a9 | 1950 | cygwin_internal (CW_SYNC_WINENV); |
1750a5ef | 1951 | |
2becadee CF |
1952 | if (!inferior_io_terminal) |
1953 | tty = ostdin = ostdout = ostderr = -1; | |
1954 | else | |
1955 | { | |
1956 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
1957 | if (tty < 0) | |
1958 | { | |
1959 | print_sys_errmsg (inferior_io_terminal, errno); | |
1960 | ostdin = ostdout = ostderr = -1; | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | ostdin = dup (0); | |
1965 | ostdout = dup (1); | |
1966 | ostderr = dup (2); | |
1967 | dup2 (tty, 0); | |
1968 | dup2 (tty, 1); | |
1969 | dup2 (tty, 2); | |
1970 | } | |
1971 | } | |
d0d0ab16 CV |
1972 | |
1973 | windows_init_thread_list (); | |
1974 | ret = CreateProcessW (0, | |
1975 | args, /* command line */ | |
1976 | NULL, /* Security */ | |
1977 | NULL, /* thread */ | |
1978 | TRUE, /* inherit handles */ | |
1979 | flags, /* start flags */ | |
1980 | NULL, /* environment */ | |
1981 | NULL, /* current directory */ | |
1982 | &si, | |
1983 | &pi); | |
1984 | if (tty >= 0) | |
1985 | { | |
1986 | close (tty); | |
1987 | dup2 (ostdin, 0); | |
1988 | dup2 (ostdout, 1); | |
1989 | dup2 (ostderr, 2); | |
1990 | close (ostdin); | |
1991 | close (ostdout); | |
1992 | close (ostderr); | |
1993 | } | |
41b4aadc | 1994 | #else |
d0d0ab16 CV |
1995 | args = alloca (strlen (toexec) + strlen (allargs) + 2); |
1996 | strcpy (args, toexec); | |
1997 | strcat (args, " "); | |
1998 | strcat (args, allargs); | |
1999 | ||
2000 | toexec = exec_file; | |
2001 | flags |= DEBUG_ONLY_THIS_PROCESS; | |
2002 | ||
41b4aadc CF |
2003 | if (!inferior_io_terminal) |
2004 | tty = INVALID_HANDLE_VALUE; | |
2005 | else | |
2006 | { | |
2007 | SECURITY_ATTRIBUTES sa; | |
2008 | sa.nLength = sizeof(sa); | |
2009 | sa.lpSecurityDescriptor = 0; | |
2010 | sa.bInheritHandle = TRUE; | |
2011 | tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE, | |
2012 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
2013 | if (tty == INVALID_HANDLE_VALUE) | |
2014 | warning (_("Warning: Failed to open TTY %s, error %#x."), | |
2015 | inferior_io_terminal, (unsigned) GetLastError ()); | |
2016 | else | |
2017 | { | |
2018 | si.hStdInput = tty; | |
2019 | si.hStdOutput = tty; | |
2020 | si.hStdError = tty; | |
2021 | si.dwFlags |= STARTF_USESTDHANDLES; | |
2022 | } | |
2023 | } | |
2becadee | 2024 | |
dc05df57 | 2025 | windows_init_thread_list (); |
d0d0ab16 CV |
2026 | ret = CreateProcessA (0, |
2027 | args, /* command line */ | |
2028 | NULL, /* Security */ | |
2029 | NULL, /* thread */ | |
2030 | TRUE, /* inherit handles */ | |
2031 | flags, /* start flags */ | |
2032 | NULL, /* environment */ | |
2033 | NULL, /* current directory */ | |
2034 | &si, | |
2035 | &pi); | |
41b4aadc CF |
2036 | if (tty != INVALID_HANDLE_VALUE) |
2037 | CloseHandle (tty); | |
10325bc5 | 2038 | #endif |
2becadee | 2039 | |
24e60978 | 2040 | if (!ret) |
8a3fe4f8 AC |
2041 | error (_("Error creating process %s, (error %d)."), |
2042 | exec_file, (unsigned) GetLastError ()); | |
24e60978 | 2043 | |
c1766e7d PM |
2044 | CloseHandle (pi.hThread); |
2045 | CloseHandle (pi.hProcess); | |
2046 | ||
dfe7f3ac CF |
2047 | if (useshell && shell[0] != '\0') |
2048 | saw_create = -1; | |
2049 | else | |
2050 | saw_create = 0; | |
2051 | ||
dc05df57 | 2052 | do_initial_windows_stuff (ops, pi.dwProcessId, 0); |
d3a09475 | 2053 | |
dc05df57 | 2054 | /* windows_continue (DBG_CONTINUE, -1); */ |
24e60978 SC |
2055 | } |
2056 | ||
2057 | static void | |
dc05df57 | 2058 | windows_mourn_inferior (struct target_ops *ops) |
24e60978 | 2059 | { |
dc05df57 | 2060 | (void) windows_continue (DBG_CONTINUE, -1); |
fa4ba8da | 2061 | i386_cleanup_dregs(); |
bf25528d CF |
2062 | if (open_process_used) |
2063 | { | |
2064 | CHECK (CloseHandle (current_process_handle)); | |
2065 | open_process_used = 0; | |
2066 | } | |
0795be10 | 2067 | unpush_target (ops); |
24e60978 SC |
2068 | generic_mourn_inferior (); |
2069 | } | |
2070 | ||
24e60978 SC |
2071 | /* Send a SIGINT to the process group. This acts just like the user typed a |
2072 | ^C on the controlling terminal. */ | |
2073 | ||
b607efe7 | 2074 | static void |
dc05df57 | 2075 | windows_stop (ptid_t ptid) |
24e60978 | 2076 | { |
1ef980b9 | 2077 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 2078 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 2079 | registers_changed (); /* refresh register state */ |
24e60978 SC |
2080 | } |
2081 | ||
3ee6f623 | 2082 | static int |
dc05df57 | 2083 | windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len, |
0a65a603 AC |
2084 | int write, struct mem_attrib *mem, |
2085 | struct target_ops *target) | |
24e60978 | 2086 | { |
5732a500 | 2087 | SIZE_T done = 0; |
24e60978 SC |
2088 | if (write) |
2089 | { | |
29fe111d | 2090 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
2c647436 | 2091 | len, (DWORD) (uintptr_t) memaddr)); |
2b008701 | 2092 | if (!WriteProcessMemory (current_process_handle, |
2c647436 | 2093 | (LPVOID) (uintptr_t) memaddr, our, |
6f17862b CF |
2094 | len, &done)) |
2095 | done = 0; | |
2b008701 | 2096 | FlushInstructionCache (current_process_handle, |
2c647436 | 2097 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
2098 | } |
2099 | else | |
2100 | { | |
29fe111d | 2101 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
2c647436 | 2102 | len, (DWORD) (uintptr_t) memaddr)); |
2b008701 | 2103 | if (!ReadProcessMemory (current_process_handle, |
2c647436 | 2104 | (LPCVOID) (uintptr_t) memaddr, our, |
6f17862b CF |
2105 | len, &done)) |
2106 | done = 0; | |
24e60978 SC |
2107 | } |
2108 | return done; | |
2109 | } | |
2110 | ||
3ee6f623 | 2111 | static void |
7d85a9c0 | 2112 | windows_kill_inferior (struct target_ops *ops) |
24e60978 | 2113 | { |
3cee93ac CF |
2114 | CHECK (TerminateProcess (current_process_handle, 0)); |
2115 | ||
b5edcb45 ILT |
2116 | for (;;) |
2117 | { | |
dc05df57 | 2118 | if (!windows_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 2119 | break; |
3cee93ac | 2120 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 2121 | break; |
3cee93ac | 2122 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
2123 | break; |
2124 | } | |
2125 | ||
dc05df57 | 2126 | target_mourn_inferior (); /* or just windows_mourn_inferior? */ |
24e60978 SC |
2127 | } |
2128 | ||
24e60978 | 2129 | static void |
dc05df57 | 2130 | windows_prepare_to_store (struct regcache *regcache) |
24e60978 SC |
2131 | { |
2132 | /* Do nothing, since we can store individual regs */ | |
2133 | } | |
2134 | ||
2135 | static int | |
dc05df57 | 2136 | windows_can_run (void) |
24e60978 SC |
2137 | { |
2138 | return 1; | |
2139 | } | |
2140 | ||
2141 | static void | |
dc05df57 | 2142 | windows_close (int x) |
24e60978 | 2143 | { |
dc05df57 | 2144 | DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n", |
3bccec63 | 2145 | PIDGET (inferior_ptid))); |
24e60978 | 2146 | } |
1ef980b9 | 2147 | |
3ee6f623 CF |
2148 | /* Convert pid to printable format. */ |
2149 | static char * | |
117de6a9 | 2150 | windows_pid_to_str (struct target_ops *ops, ptid_t ptid) |
24e60978 | 2151 | { |
3ee6f623 | 2152 | static char buf[80]; |
3ee6f623 | 2153 | |
2dc38344 PA |
2154 | if (ptid_get_tid (ptid) != 0) |
2155 | { | |
2156 | snprintf (buf, sizeof (buf), "Thread %d.0x%lx", | |
2157 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
2158 | return buf; | |
2159 | } | |
2160 | ||
2161 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2162 | } |
2163 | ||
de1b3c3d | 2164 | static LONGEST |
dc05df57 | 2165 | windows_xfer_shared_libraries (struct target_ops *ops, |
de1b3c3d PA |
2166 | enum target_object object, const char *annex, |
2167 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2168 | ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2169 | { |
de1b3c3d PA |
2170 | struct obstack obstack; |
2171 | const char *buf; | |
2172 | LONGEST len_avail; | |
3cb8e7f6 | 2173 | struct so_list *so; |
3cb8e7f6 | 2174 | |
de1b3c3d PA |
2175 | if (writebuf) |
2176 | return -1; | |
3cb8e7f6 | 2177 | |
de1b3c3d PA |
2178 | obstack_init (&obstack); |
2179 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2180 | for (so = solib_start.next; so; so = so->next) | |
dc05df57 | 2181 | windows_xfer_shared_library (so->so_name, (CORE_ADDR) (uintptr_t) so->lm_info->load_addr, |
5af949e3 | 2182 | target_gdbarch, &obstack); |
de1b3c3d | 2183 | obstack_grow_str0 (&obstack, "</library-list>\n"); |
3cb8e7f6 | 2184 | |
de1b3c3d PA |
2185 | buf = obstack_finish (&obstack); |
2186 | len_avail = strlen (buf); | |
2187 | if (offset >= len_avail) | |
2188 | return 0; | |
3cb8e7f6 | 2189 | |
de1b3c3d PA |
2190 | if (len > len_avail - offset) |
2191 | len = len_avail - offset; | |
2192 | memcpy (readbuf, buf + offset, len); | |
3cb8e7f6 | 2193 | |
de1b3c3d PA |
2194 | obstack_free (&obstack, NULL); |
2195 | return len; | |
3cb8e7f6 CF |
2196 | } |
2197 | ||
de1b3c3d | 2198 | static LONGEST |
dc05df57 | 2199 | windows_xfer_partial (struct target_ops *ops, enum target_object object, |
de1b3c3d PA |
2200 | const char *annex, gdb_byte *readbuf, |
2201 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2202 | { |
de1b3c3d | 2203 | switch (object) |
3cb8e7f6 | 2204 | { |
de1b3c3d PA |
2205 | case TARGET_OBJECT_MEMORY: |
2206 | if (readbuf) | |
2207 | return (*ops->deprecated_xfer_memory) (offset, readbuf, | |
244e85c8 | 2208 | len, 0/*read*/, NULL, ops); |
de1b3c3d PA |
2209 | if (writebuf) |
2210 | return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf, | |
2211 | len, 1/*write*/, NULL, ops); | |
2212 | return -1; | |
2213 | ||
2214 | case TARGET_OBJECT_LIBRARIES: | |
dc05df57 | 2215 | return windows_xfer_shared_libraries (ops, object, annex, readbuf, |
de1b3c3d | 2216 | writebuf, offset, len); |
3929abe9 | 2217 | |
de1b3c3d PA |
2218 | default: |
2219 | if (ops->beneath != NULL) | |
2220 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
2221 | readbuf, writebuf, offset, len); | |
2222 | return -1; | |
3929abe9 | 2223 | } |
02c5aecd CF |
2224 | } |
2225 | ||
1e2f1c5c JB |
2226 | static ptid_t |
2227 | windows_get_ada_task_ptid (long lwp, long thread) | |
2228 | { | |
2229 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2230 | } | |
2231 | ||
3ee6f623 | 2232 | static void |
dc05df57 | 2233 | init_windows_ops (void) |
3ee6f623 | 2234 | { |
dc05df57 CF |
2235 | windows_ops.to_shortname = "child"; |
2236 | windows_ops.to_longname = "Win32 child process"; | |
2237 | windows_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
2238 | windows_ops.to_open = windows_open; | |
2239 | windows_ops.to_close = windows_close; | |
2240 | windows_ops.to_attach = windows_attach; | |
2241 | windows_ops.to_attach_no_wait = 1; | |
2242 | windows_ops.to_detach = windows_detach; | |
2243 | windows_ops.to_resume = windows_resume; | |
2244 | windows_ops.to_wait = windows_wait; | |
2245 | windows_ops.to_fetch_registers = windows_fetch_inferior_registers; | |
2246 | windows_ops.to_store_registers = windows_store_inferior_registers; | |
2247 | windows_ops.to_prepare_to_store = windows_prepare_to_store; | |
2248 | windows_ops.deprecated_xfer_memory = windows_xfer_memory; | |
2249 | windows_ops.to_xfer_partial = windows_xfer_partial; | |
2250 | windows_ops.to_files_info = windows_files_info; | |
2251 | windows_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
2252 | windows_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
2253 | windows_ops.to_terminal_init = terminal_init_inferior; | |
2254 | windows_ops.to_terminal_inferior = terminal_inferior; | |
2255 | windows_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
2256 | windows_ops.to_terminal_ours = terminal_ours; | |
2257 | windows_ops.to_terminal_save_ours = terminal_save_ours; | |
2258 | windows_ops.to_terminal_info = child_terminal_info; | |
2259 | windows_ops.to_kill = windows_kill_inferior; | |
2260 | windows_ops.to_create_inferior = windows_create_inferior; | |
2261 | windows_ops.to_mourn_inferior = windows_mourn_inferior; | |
2262 | windows_ops.to_can_run = windows_can_run; | |
2263 | windows_ops.to_thread_alive = windows_thread_alive; | |
2264 | windows_ops.to_pid_to_str = windows_pid_to_str; | |
2265 | windows_ops.to_stop = windows_stop; | |
2266 | windows_ops.to_stratum = process_stratum; | |
c35b1492 PA |
2267 | windows_ops.to_has_all_memory = default_child_has_all_memory; |
2268 | windows_ops.to_has_memory = default_child_has_memory; | |
2269 | windows_ops.to_has_stack = default_child_has_stack; | |
2270 | windows_ops.to_has_registers = default_child_has_registers; | |
2271 | windows_ops.to_has_execution = default_child_has_execution; | |
dc05df57 | 2272 | windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file; |
1e2f1c5c | 2273 | windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid; |
9bb9e8ad | 2274 | |
5aca5a82 PM |
2275 | i386_use_watchpoints (&windows_ops); |
2276 | ||
9bb9e8ad PM |
2277 | i386_dr_low.set_control = cygwin_set_dr7; |
2278 | i386_dr_low.set_addr = cygwin_set_dr; | |
2279 | i386_dr_low.reset_addr = NULL; | |
2280 | i386_dr_low.get_status = cygwin_get_dr6; | |
2281 | ||
2282 | /* i386_dr_low.debug_register_length field is set by | |
2283 | calling i386_set_debug_register_length function | |
2284 | in processor windows specific native file. */ | |
2285 | ||
dc05df57 | 2286 | windows_ops.to_magic = OPS_MAGIC; |
c719b714 | 2287 | } |
24e60978 | 2288 | |
3929abe9 | 2289 | static void |
dc05df57 | 2290 | set_windows_aliases (char *argv0) |
3929abe9 CF |
2291 | { |
2292 | add_info_alias ("dll", "sharedlibrary", 1); | |
2293 | } | |
2294 | ||
24e60978 | 2295 | void |
dc05df57 | 2296 | _initialize_windows_nat (void) |
24e60978 | 2297 | { |
fa58ee11 EZ |
2298 | struct cmd_list_element *c; |
2299 | ||
dc05df57 | 2300 | init_windows_ops (); |
1ef980b9 | 2301 | |
d0d0ab16 CV |
2302 | #ifdef __CYGWIN__ |
2303 | cygwin_internal (CW_SET_DOS_FILE_WARNING, 0); | |
2304 | #endif | |
2305 | ||
fa58ee11 | 2306 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1bedd215 | 2307 | _("Load dll library symbols from FILE.")); |
5ba2abeb | 2308 | set_cmd_completer (c, filename_completer); |
450005e7 CF |
2309 | |
2310 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
2311 | ||
70992597 PM |
2312 | add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1); |
2313 | ||
2314 | add_com_alias ("assf", "dll-symbols", class_alias, 1); | |
2315 | ||
10325bc5 | 2316 | #ifdef __CYGWIN__ |
5bf193a2 AC |
2317 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
2318 | Set use of shell to start subprocess."), _("\ | |
2319 | Show use of shell to start subprocess."), NULL, | |
2320 | NULL, | |
2321 | NULL, /* FIXME: i18n: */ | |
2322 | &setlist, &showlist); | |
2323 | ||
09280ddf CF |
2324 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\ |
2325 | Break when an exception is detected in the Cygwin DLL itself."), _("\ | |
2326 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
2327 | NULL, | |
2328 | NULL, /* FIXME: i18n: */ | |
2329 | &setlist, &showlist); | |
10325bc5 | 2330 | #endif |
09280ddf | 2331 | |
5bf193a2 AC |
2332 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
2333 | Set creation of new console when creating child process."), _("\ | |
2334 | Show creation of new console when creating child process."), NULL, | |
2335 | NULL, | |
2336 | NULL, /* FIXME: i18n: */ | |
2337 | &setlist, &showlist); | |
2338 | ||
2339 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
2340 | Set creation of new group when creating child process."), _("\ | |
2341 | Show creation of new group when creating child process."), NULL, | |
2342 | NULL, | |
2343 | NULL, /* FIXME: i18n: */ | |
2344 | &setlist, &showlist); | |
2345 | ||
2346 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
2347 | Set whether to display execution in child process."), _("\ | |
2348 | Show whether to display execution in child process."), NULL, | |
2349 | NULL, | |
2350 | NULL, /* FIXME: i18n: */ | |
2351 | &setlist, &showlist); | |
2352 | ||
2353 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
2354 | Set whether to display kernel events in child process."), _("\ | |
2355 | Show whether to display kernel events in child process."), NULL, | |
2356 | NULL, | |
2357 | NULL, /* FIXME: i18n: */ | |
2358 | &setlist, &showlist); | |
2359 | ||
2360 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
2361 | Set whether to display memory accesses in child process."), _("\ | |
2362 | Show whether to display memory accesses in child process."), NULL, | |
2363 | NULL, | |
2364 | NULL, /* FIXME: i18n: */ | |
2365 | &setlist, &showlist); | |
2366 | ||
2367 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
2368 | &debug_exceptions, _("\ | |
2369 | Set whether to display kernel exceptions in child process."), _("\ | |
2370 | Show whether to display kernel exceptions in child process."), NULL, | |
2371 | NULL, | |
2372 | NULL, /* FIXME: i18n: */ | |
2373 | &setlist, &showlist); | |
1ef980b9 | 2374 | |
c1748f97 | 2375 | add_prefix_cmd ("w32", class_info, info_w32_command, |
1bedd215 | 2376 | _("Print information specific to Win32 debugging."), |
baa93fa6 | 2377 | &info_w32_cmdlist, "info w32 ", 0, &infolist); |
c1748f97 PM |
2378 | |
2379 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 2380 | _("Display selectors infos."), |
c1748f97 | 2381 | &info_w32_cmdlist); |
dc05df57 CF |
2382 | add_target (&windows_ops); |
2383 | deprecated_init_ui_hook = set_windows_aliases; | |
24e60978 | 2384 | } |
3cee93ac | 2385 | |
fa4ba8da PM |
2386 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
2387 | ||
2388 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
2389 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 2390 | actually set up when windows_continue is called. */ |
9bb9e8ad | 2391 | static void |
fa4ba8da PM |
2392 | cygwin_set_dr (int i, CORE_ADDR addr) |
2393 | { | |
2394 | if (i < 0 || i > 3) | |
2395 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2396 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
41b4aadc | 2397 | dr[i] = addr; |
fa4ba8da PM |
2398 | debug_registers_changed = 1; |
2399 | debug_registers_used = 1; | |
2400 | } | |
2401 | ||
2402 | /* Pass the value VAL to the inferior in the DR7 debug control | |
2403 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 2404 | will be actually set up in windows_wait. */ |
9bb9e8ad PM |
2405 | static void |
2406 | cygwin_set_dr7 (unsigned long val) | |
fa4ba8da | 2407 | { |
9bb9e8ad | 2408 | dr[7] = (CORE_ADDR) val; |
fa4ba8da PM |
2409 | debug_registers_changed = 1; |
2410 | debug_registers_used = 1; | |
2411 | } | |
2412 | ||
2413 | /* Get the value of the DR6 debug status register from the inferior. | |
2414 | Here we just return the value stored in dr[6] | |
2415 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
9bb9e8ad | 2416 | static unsigned long |
fa4ba8da PM |
2417 | cygwin_get_dr6 (void) |
2418 | { | |
9bb9e8ad | 2419 | return (unsigned long) dr[6]; |
fa4ba8da PM |
2420 | } |
2421 | ||
2dc38344 | 2422 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 2423 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
2dc38344 | 2424 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
3cee93ac | 2425 | static int |
28439f5e | 2426 | windows_thread_alive (struct target_ops *ops, ptid_t ptid) |
3cee93ac | 2427 | { |
2dc38344 PA |
2428 | int tid; |
2429 | ||
2430 | gdb_assert (ptid_get_tid (ptid) != 0); | |
2431 | tid = ptid_get_tid (ptid); | |
39f77062 | 2432 | |
2dc38344 | 2433 | return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
3a4b77d8 | 2434 | FALSE : TRUE; |
3cee93ac CF |
2435 | } |
2436 | ||
2a3d5645 CF |
2437 | void |
2438 | _initialize_check_for_gdb_ini (void) | |
2439 | { | |
2440 | char *homedir; | |
2441 | if (inhibit_gdbinit) | |
2442 | return; | |
2443 | ||
2444 | homedir = getenv ("HOME"); | |
2445 | if (homedir) | |
2446 | { | |
2447 | char *p; | |
2448 | char *oldini = (char *) alloca (strlen (homedir) + | |
2449 | sizeof ("/gdb.ini")); | |
2450 | strcpy (oldini, homedir); | |
2451 | p = strchr (oldini, '\0'); | |
2452 | if (p > oldini && p[-1] != '/') | |
2453 | *p++ = '/'; | |
2454 | strcpy (p, "gdb.ini"); | |
2455 | if (access (oldini, 0) == 0) | |
2456 | { | |
2457 | int len = strlen (oldini); | |
2458 | char *newini = alloca (len + 1); | |
dfe7f3ac | 2459 | sprintf (newini, "%.*s.gdbinit", |
58fa08f0 | 2460 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 2461 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
2462 | } |
2463 | } | |
2464 | } | |
33605d39 | 2465 | |
2b008701 CF |
2466 | /* Define dummy functions which always return error for the rare cases where |
2467 | these functions could not be found. */ | |
2468 | static BOOL WINAPI | |
2469 | bad_DebugActiveProcessStop (DWORD w) | |
2470 | { | |
2471 | return FALSE; | |
2472 | } | |
2473 | static BOOL WINAPI | |
2474 | bad_DebugBreakProcess (HANDLE w) | |
2475 | { | |
2476 | return FALSE; | |
2477 | } | |
2478 | static BOOL WINAPI | |
2479 | bad_DebugSetProcessKillOnExit (BOOL w) | |
2480 | { | |
2481 | return FALSE; | |
2482 | } | |
2483 | static BOOL WINAPI | |
2484 | bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z) | |
2485 | { | |
2486 | return FALSE; | |
2487 | } | |
d0d0ab16 | 2488 | #ifndef __CYGWIN__ |
2b008701 CF |
2489 | static DWORD WINAPI |
2490 | bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z) | |
2491 | { | |
2492 | return 0; | |
2493 | } | |
d0d0ab16 CV |
2494 | #else |
2495 | static DWORD WINAPI | |
2496 | bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z) | |
2497 | { | |
2498 | return 0; | |
2499 | } | |
2500 | #endif | |
2b008701 CF |
2501 | static BOOL WINAPI |
2502 | bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z) | |
2503 | { | |
2504 | return FALSE; | |
2505 | } | |
2506 | ||
418c6cb3 CF |
2507 | static BOOL WINAPI |
2508 | bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y) | |
2509 | { | |
2510 | return FALSE; | |
2511 | } | |
2512 | ||
2b008701 CF |
2513 | /* Load any functions which may not be available in ancient versions |
2514 | of Windows. */ | |
33605d39 | 2515 | void |
2b008701 | 2516 | _initialize_loadable (void) |
33605d39 | 2517 | { |
2b008701 CF |
2518 | HMODULE hm = NULL; |
2519 | ||
2520 | hm = LoadLibrary ("kernel32.dll"); | |
2521 | if (hm) | |
33605d39 | 2522 | { |
2b008701 CF |
2523 | dyn_DebugActiveProcessStop = (void *) |
2524 | GetProcAddress (hm, "DebugActiveProcessStop"); | |
2525 | dyn_DebugBreakProcess = (void *) | |
2526 | GetProcAddress (hm, "DebugBreakProcess"); | |
2527 | dyn_DebugSetProcessKillOnExit = (void *) | |
2528 | GetProcAddress (hm, "DebugSetProcessKillOnExit"); | |
2529 | } | |
33605d39 | 2530 | |
2b008701 CF |
2531 | /* Set variables to dummy versions of these processes if the function |
2532 | wasn't found in kernel32.dll. */ | |
2533 | if (!dyn_DebugBreakProcess) | |
2534 | dyn_DebugBreakProcess = bad_DebugBreakProcess; | |
2535 | if (!dyn_DebugActiveProcessStop || !dyn_DebugSetProcessKillOnExit) | |
2536 | { | |
2537 | dyn_DebugActiveProcessStop = bad_DebugActiveProcessStop; | |
2538 | dyn_DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit; | |
2539 | } | |
33605d39 | 2540 | |
2b008701 CF |
2541 | /* Load optional functions used for retrieving filename information |
2542 | associated with the currently debugged process or its dlls. */ | |
2543 | hm = LoadLibrary ("psapi.dll"); | |
2544 | if (hm) | |
2545 | { | |
2546 | dyn_EnumProcessModules = (void *) | |
2547 | GetProcAddress (hm, "EnumProcessModules"); | |
2548 | dyn_GetModuleInformation = (void *) | |
2549 | GetProcAddress (hm, "GetModuleInformation"); | |
d0d0ab16 | 2550 | #ifndef __CYGWIN__ |
2b008701 CF |
2551 | dyn_GetModuleFileNameExA = (void *) |
2552 | GetProcAddress (hm, "GetModuleFileNameExA"); | |
d0d0ab16 CV |
2553 | #else |
2554 | dyn_GetModuleFileNameExW = (void *) | |
2555 | GetProcAddress (hm, "GetModuleFileNameExW"); | |
2556 | #endif | |
33605d39 CF |
2557 | } |
2558 | ||
d0d0ab16 CV |
2559 | if (!dyn_EnumProcessModules || !dyn_GetModuleInformation |
2560 | #ifndef __CYGWIN__ | |
2561 | || !dyn_GetModuleFileNameExA | |
2562 | #else | |
2563 | || !dyn_GetModuleFileNameExW | |
2564 | #endif | |
2565 | ) | |
2b008701 CF |
2566 | { |
2567 | /* Set variables to dummy versions of these processes if the function | |
2568 | wasn't found in psapi.dll. */ | |
2569 | dyn_EnumProcessModules = bad_EnumProcessModules; | |
2570 | dyn_GetModuleInformation = bad_GetModuleInformation; | |
d0d0ab16 | 2571 | #ifndef __CYGWIN__ |
2b008701 | 2572 | dyn_GetModuleFileNameExA = bad_GetModuleFileNameExA; |
d0d0ab16 CV |
2573 | #else |
2574 | dyn_GetModuleFileNameExW = bad_GetModuleFileNameExW; | |
2575 | #endif | |
2b008701 CF |
2576 | /* This will probably fail on Windows 9x/Me. Let the user know that we're |
2577 | missing some functionality. */ | |
418c6cb3 CF |
2578 | warning(_("cannot automatically find executable file or library to read symbols.\nUse \"file\" or \"dll\" command to load executable/libraries directly.")); |
2579 | } | |
2580 | ||
2581 | hm = LoadLibrary ("advapi32.dll"); | |
2582 | if (hm) | |
2583 | { | |
2584 | dyn_OpenProcessToken = (void *) | |
2585 | GetProcAddress (hm, "OpenProcessToken"); | |
2586 | dyn_LookupPrivilegeValueA = (void *) | |
2587 | GetProcAddress (hm, "LookupPrivilegeValueA"); | |
2588 | dyn_AdjustTokenPrivileges = (void *) | |
2589 | GetProcAddress (hm, "AdjustTokenPrivileges"); | |
2590 | /* Only need to set one of these since if OpenProcessToken fails nothing | |
2591 | else is needed. */ | |
2592 | if (!dyn_OpenProcessToken || !dyn_LookupPrivilegeValueA || !dyn_AdjustTokenPrivileges) | |
2593 | dyn_OpenProcessToken = bad_OpenProcessToken; | |
2b008701 | 2594 | } |
33605d39 | 2595 | } |