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, |
0fb0cc75 | 4 | 2005, 2006, 2007, 2008, 2009 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" | |
de1b3c3d | 66 | |
418c6cb3 | 67 | #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges |
2b008701 CF |
68 | #define DebugActiveProcessStop dyn_DebugActiveProcessStop |
69 | #define DebugBreakProcess dyn_DebugBreakProcess | |
70 | #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit | |
71 | #define EnumProcessModules dyn_EnumProcessModules | |
72 | #define GetModuleFileNameExA dyn_GetModuleFileNameExA | |
73 | #define GetModuleInformation dyn_GetModuleInformation | |
418c6cb3 CF |
74 | #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA |
75 | #define OpenProcessToken dyn_OpenProcessToken | |
2b008701 | 76 | |
418c6cb3 CF |
77 | static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, |
78 | DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
2b008701 CF |
79 | static BOOL WINAPI (*DebugActiveProcessStop) (DWORD); |
80 | static BOOL WINAPI (*DebugBreakProcess) (HANDLE); | |
81 | static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL); | |
82 | static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD, | |
83 | LPDWORD); | |
84 | static DWORD WINAPI (*GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, | |
85 | DWORD); | |
86 | static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, | |
87 | DWORD); | |
418c6cb3 CF |
88 | static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID); |
89 | static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE); | |
2b008701 | 90 | |
dc05df57 | 91 | static struct target_ops windows_ops; |
3ee6f623 | 92 | |
10325bc5 | 93 | #ifdef __CYGWIN__ |
a244bdca | 94 | /* The starting and ending address of the cygwin1.dll text segment. */ |
dc05df57 CF |
95 | static CORE_ADDR cygwin_load_start; |
96 | static CORE_ADDR cygwin_load_end; | |
10325bc5 | 97 | #endif |
a244bdca CF |
98 | |
99 | static int have_saved_context; /* True if we've saved context from a cygwin signal. */ | |
100 | static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */ | |
101 | ||
0714f9bf SS |
102 | /* If we're not using the old Cygwin header file set, define the |
103 | following which never should have been in the generic Win32 API | |
104 | headers in the first place since they were our own invention... */ | |
105 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 106 | enum |
8e860359 CF |
107 | { |
108 | FLAG_TRACE_BIT = 0x100, | |
109 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
110 | }; | |
0714f9bf SS |
111 | #endif |
112 | ||
5851ab76 JB |
113 | #ifndef CONTEXT_EXTENDED_REGISTERS |
114 | /* This macro is only defined on ia32. It only makes sense on this target, | |
115 | so define it as zero if not already defined. */ | |
116 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
117 | #endif | |
118 | ||
fa4ba8da PM |
119 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
120 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 121 | |
41b4aadc | 122 | static uintptr_t dr[8]; |
87a45c96 CF |
123 | static int debug_registers_changed; |
124 | static int debug_registers_used; | |
6537bb24 | 125 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 126 | |
3cee93ac CF |
127 | /* The string sent by cygwin when it processes a signal. |
128 | FIXME: This should be in a cygwin include file. */ | |
3929abe9 CF |
129 | #ifndef _CYGWIN_SIGNAL_STRING |
130 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
131 | #endif | |
3cee93ac | 132 | |
29fe111d | 133 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 134 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
135 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
136 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
137 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 | 138 | |
dc05df57 | 139 | static void windows_stop (ptid_t); |
02529b48 | 140 | static int windows_thread_alive (struct target_ops *, ptid_t); |
7d85a9c0 | 141 | static void windows_kill_inferior (struct target_ops *); |
3cee93ac | 142 | |
7393af7c PM |
143 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
144 | /* Set if a signal was received from the debugged process */ | |
145 | ||
3cee93ac | 146 | /* Thread information structure used to track information that is |
6537bb24 | 147 | not available in gdb's thread structure. */ |
3cee93ac | 148 | typedef struct thread_info_struct |
3a4b77d8 JM |
149 | { |
150 | struct thread_info_struct *next; | |
151 | DWORD id; | |
152 | HANDLE h; | |
153 | char *name; | |
6537bb24 | 154 | int suspended; |
3ade5333 | 155 | int reload_context; |
3a4b77d8 | 156 | CONTEXT context; |
1e37c281 | 157 | STACKFRAME sf; |
8e860359 CF |
158 | } |
159 | thread_info; | |
1e37c281 | 160 | |
29fe111d | 161 | static thread_info thread_head; |
24e60978 | 162 | |
24e60978 SC |
163 | /* The process and thread handles for the above context. */ |
164 | ||
3cee93ac CF |
165 | static DEBUG_EVENT current_event; /* The current debug event from |
166 | WaitForDebugEvent */ | |
167 | static HANDLE current_process_handle; /* Currently executing process */ | |
168 | static thread_info *current_thread; /* Info on currently selected thread */ | |
349b409f | 169 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
170 | |
171 | /* Counts of things. */ | |
172 | static int exception_count = 0; | |
173 | static int event_count = 0; | |
dfe7f3ac | 174 | static int saw_create; |
bf25528d | 175 | static int open_process_used = 0; |
24e60978 SC |
176 | |
177 | /* User options. */ | |
178 | static int new_console = 0; | |
10325bc5 | 179 | #ifdef __CYGWIN__ |
09280ddf | 180 | static int cygwin_exceptions = 0; |
10325bc5 | 181 | #endif |
1e37c281 | 182 | static int new_group = 1; |
dfe7f3ac CF |
183 | static int debug_exec = 0; /* show execution */ |
184 | static int debug_events = 0; /* show events from kernel */ | |
185 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 186 | static int debug_exceptions = 0; /* show target exceptions */ |
dfe7f3ac CF |
187 | static int useshell = 0; /* use shell for subprocesses */ |
188 | ||
7e63b4e4 | 189 | /* This vector maps GDB's idea of a register's number into an offset |
dc05df57 | 190 | in the windows exception context vector. |
24e60978 | 191 | |
3cee93ac | 192 | It also contains the bit mask needed to load the register in question. |
24e60978 | 193 | |
7e63b4e4 JB |
194 | The contents of this table can only be computed by the units |
195 | that provide CPU-specific support for Windows native debugging. | |
196 | These units should set the table by calling | |
dc05df57 | 197 | windows_set_context_register_offsets. |
7e63b4e4 | 198 | |
24e60978 SC |
199 | One day we could read a reg, we could inspect the context we |
200 | already have loaded, if it doesn't have the bit set that we need, | |
201 | we read that set of registers in using GetThreadContext. If the | |
202 | context already contains what we need, we just unpack it. Then to | |
203 | write a register, first we have to ensure that the context contains | |
204 | the other regs of the group, and then we copy the info in and set | |
205 | out bit. */ | |
206 | ||
7e63b4e4 | 207 | static const int *mappings; |
d3a09475 | 208 | |
24e60978 SC |
209 | /* This vector maps the target's idea of an exception (extracted |
210 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
211 | ||
212 | struct xlate_exception | |
213 | { | |
214 | int them; | |
215 | enum target_signal us; | |
216 | }; | |
217 | ||
24e60978 SC |
218 | static const struct xlate_exception |
219 | xlate[] = | |
220 | { | |
221 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 222 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
223 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
224 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
225 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
7393af7c | 226 | {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE}, |
24e60978 SC |
227 | {-1, -1}}; |
228 | ||
7e63b4e4 JB |
229 | /* Set the MAPPINGS static global to OFFSETS. |
230 | See the description of MAPPINGS for more details. */ | |
231 | ||
232 | void | |
dc05df57 | 233 | windows_set_context_register_offsets (const int *offsets) |
7e63b4e4 JB |
234 | { |
235 | mappings = offsets; | |
236 | } | |
237 | ||
fa4ba8da PM |
238 | static void |
239 | check (BOOL ok, const char *file, int line) | |
240 | { | |
241 | if (!ok) | |
dfe7f3ac | 242 | printf_filtered ("error return %s:%d was %lu\n", file, line, |
fa4ba8da PM |
243 | GetLastError ()); |
244 | } | |
245 | ||
6537bb24 PA |
246 | /* Find a thread record given a thread id. If GET_CONTEXT is not 0, |
247 | then also retrieve the context for this thread. If GET_CONTEXT is | |
248 | negative, then don't suspend the thread. */ | |
3cee93ac CF |
249 | static thread_info * |
250 | thread_rec (DWORD id, int get_context) | |
24e60978 | 251 | { |
3cee93ac CF |
252 | thread_info *th; |
253 | ||
3a4b77d8 | 254 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
255 | if (th->id == id) |
256 | { | |
6537bb24 | 257 | if (!th->suspended && get_context) |
3cee93ac | 258 | { |
8a892701 | 259 | if (get_context > 0 && id != current_event.dwThreadId) |
6537bb24 PA |
260 | { |
261 | if (SuspendThread (th->h) == (DWORD) -1) | |
262 | { | |
263 | DWORD err = GetLastError (); | |
264 | warning (_("SuspendThread failed. (winerr %d)"), | |
265 | (int) err); | |
266 | return NULL; | |
267 | } | |
268 | th->suspended = 1; | |
269 | } | |
3cee93ac | 270 | else if (get_context < 0) |
6537bb24 | 271 | th->suspended = -1; |
3ade5333 | 272 | th->reload_context = 1; |
3cee93ac CF |
273 | } |
274 | return th; | |
275 | } | |
276 | ||
277 | return NULL; | |
278 | } | |
279 | ||
2dc38344 | 280 | /* Add a thread to the thread list. */ |
3cee93ac | 281 | static thread_info * |
dc05df57 | 282 | windows_add_thread (ptid_t ptid, HANDLE h) |
3cee93ac CF |
283 | { |
284 | thread_info *th; | |
2dc38344 PA |
285 | DWORD id; |
286 | ||
287 | gdb_assert (ptid_get_tid (ptid) != 0); | |
288 | ||
289 | id = ptid_get_tid (ptid); | |
3cee93ac CF |
290 | |
291 | if ((th = thread_rec (id, FALSE))) | |
292 | return th; | |
293 | ||
3929abe9 | 294 | th = XZALLOC (thread_info); |
3cee93ac CF |
295 | th->id = id; |
296 | th->h = h; | |
297 | th->next = thread_head.next; | |
298 | thread_head.next = th; | |
2dc38344 PA |
299 | add_thread (ptid); |
300 | /* Set the debug registers for the new thread if they are used. */ | |
fa4ba8da PM |
301 | if (debug_registers_used) |
302 | { | |
303 | /* Only change the value of the debug registers. */ | |
304 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
305 | CHECK (GetThreadContext (th->h, &th->context)); | |
306 | th->context.Dr0 = dr[0]; | |
307 | th->context.Dr1 = dr[1]; | |
308 | th->context.Dr2 = dr[2]; | |
309 | th->context.Dr3 = dr[3]; | |
6537bb24 | 310 | th->context.Dr6 = DR6_CLEAR_VALUE; |
fa4ba8da PM |
311 | th->context.Dr7 = dr[7]; |
312 | CHECK (SetThreadContext (th->h, &th->context)); | |
313 | th->context.ContextFlags = 0; | |
314 | } | |
3cee93ac | 315 | return th; |
24e60978 SC |
316 | } |
317 | ||
3cee93ac CF |
318 | /* Clear out any old thread list and reintialize it to a |
319 | pristine state. */ | |
24e60978 | 320 | static void |
dc05df57 | 321 | windows_init_thread_list (void) |
24e60978 | 322 | { |
3cee93ac CF |
323 | thread_info *th = &thread_head; |
324 | ||
dc05df57 | 325 | DEBUG_EVENTS (("gdb: windows_init_thread_list\n")); |
3cee93ac CF |
326 | init_thread_list (); |
327 | while (th->next != NULL) | |
24e60978 | 328 | { |
3cee93ac CF |
329 | thread_info *here = th->next; |
330 | th->next = here->next; | |
b8c9b27d | 331 | xfree (here); |
24e60978 | 332 | } |
059198c1 | 333 | thread_head.next = NULL; |
3cee93ac CF |
334 | } |
335 | ||
336 | /* Delete a thread from the list of threads */ | |
337 | static void | |
dc05df57 | 338 | windows_delete_thread (ptid_t ptid) |
3cee93ac CF |
339 | { |
340 | thread_info *th; | |
2dc38344 PA |
341 | DWORD id; |
342 | ||
343 | gdb_assert (ptid_get_tid (ptid) != 0); | |
344 | ||
345 | id = ptid_get_tid (ptid); | |
3cee93ac CF |
346 | |
347 | if (info_verbose) | |
2dc38344 PA |
348 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid)); |
349 | delete_thread (ptid); | |
3cee93ac CF |
350 | |
351 | for (th = &thread_head; | |
352 | th->next != NULL && th->next->id != id; | |
353 | th = th->next) | |
354 | continue; | |
355 | ||
356 | if (th->next != NULL) | |
24e60978 | 357 | { |
3cee93ac CF |
358 | thread_info *here = th->next; |
359 | th->next = here->next; | |
b8c9b27d | 360 | xfree (here); |
24e60978 SC |
361 | } |
362 | } | |
363 | ||
3cee93ac | 364 | static void |
dc05df57 | 365 | do_windows_fetch_inferior_registers (struct regcache *regcache, int r) |
24e60978 | 366 | { |
1e37c281 | 367 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
20a6ec49 MD |
368 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
369 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
1e37c281 | 370 | long l; |
6c7de422 | 371 | |
3ade5333 | 372 | if (!current_thread) |
d6dc8049 CF |
373 | return; /* Windows sometimes uses a non-existent thread id in its |
374 | events */ | |
3ade5333 CF |
375 | |
376 | if (current_thread->reload_context) | |
377 | { | |
cb832706 | 378 | #ifdef __COPY_CONTEXT_SIZE |
a244bdca CF |
379 | if (have_saved_context) |
380 | { | |
381 | /* Lie about where the program actually is stopped since cygwin has informed us that | |
382 | we should consider the signal to have occurred at another location which is stored | |
383 | in "saved_context. */ | |
384 | memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE); | |
385 | have_saved_context = 0; | |
386 | } | |
387 | else | |
cb832706 | 388 | #endif |
a244bdca CF |
389 | { |
390 | thread_info *th = current_thread; | |
391 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
392 | GetThreadContext (th->h, &th->context); | |
2b008701 | 393 | /* Copy dr values from that thread. |
88616312 PM |
394 | But only if there were not modified since last stop. PR gdb/2388 */ |
395 | if (!debug_registers_changed) | |
396 | { | |
397 | dr[0] = th->context.Dr0; | |
398 | dr[1] = th->context.Dr1; | |
399 | dr[2] = th->context.Dr2; | |
400 | dr[3] = th->context.Dr3; | |
401 | dr[6] = th->context.Dr6; | |
402 | dr[7] = th->context.Dr7; | |
403 | } | |
a244bdca | 404 | } |
3ade5333 CF |
405 | current_thread->reload_context = 0; |
406 | } | |
407 | ||
20a6ec49 | 408 | if (r == I387_FISEG_REGNUM (tdep)) |
1e37c281 | 409 | { |
8e860359 | 410 | l = *((long *) context_offset) & 0xffff; |
56be3814 | 411 | regcache_raw_supply (regcache, r, (char *) &l); |
1e37c281 | 412 | } |
20a6ec49 | 413 | else if (r == I387_FOP_REGNUM (tdep)) |
1e37c281 | 414 | { |
8e860359 | 415 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
56be3814 | 416 | regcache_raw_supply (regcache, r, (char *) &l); |
1e37c281 JM |
417 | } |
418 | else if (r >= 0) | |
56be3814 | 419 | regcache_raw_supply (regcache, r, context_offset); |
3cee93ac | 420 | else |
24e60978 | 421 | { |
20a6ec49 | 422 | for (r = 0; r < gdbarch_num_regs (gdbarch); r++) |
dc05df57 | 423 | do_windows_fetch_inferior_registers (regcache, r); |
24e60978 | 424 | } |
3cee93ac CF |
425 | } |
426 | ||
427 | static void | |
28439f5e PA |
428 | windows_fetch_inferior_registers (struct target_ops *ops, |
429 | struct regcache *regcache, int r) | |
3cee93ac | 430 | { |
2dc38344 | 431 | current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE); |
d6dc8049 CF |
432 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
433 | thread id in its events */ | |
3ade5333 | 434 | if (current_thread) |
dc05df57 | 435 | do_windows_fetch_inferior_registers (regcache, r); |
3cee93ac CF |
436 | } |
437 | ||
438 | static void | |
dc05df57 | 439 | do_windows_store_inferior_registers (const struct regcache *regcache, int r) |
3cee93ac | 440 | { |
3ade5333 | 441 | if (!current_thread) |
d6dc8049 | 442 | /* Windows sometimes uses a non-existent thread id in its events */; |
3ade5333 | 443 | else if (r >= 0) |
56be3814 | 444 | regcache_raw_collect (regcache, r, |
822c9732 | 445 | ((char *) ¤t_thread->context) + mappings[r]); |
24e60978 SC |
446 | else |
447 | { | |
40a6adc1 | 448 | for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++) |
dc05df57 | 449 | do_windows_store_inferior_registers (regcache, r); |
24e60978 SC |
450 | } |
451 | } | |
452 | ||
3cee93ac CF |
453 | /* Store a new register value into the current thread context */ |
454 | static void | |
28439f5e PA |
455 | windows_store_inferior_registers (struct target_ops *ops, |
456 | struct regcache *regcache, int r) | |
3cee93ac | 457 | { |
2dc38344 | 458 | current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE); |
d6dc8049 CF |
459 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
460 | thread id in its events */ | |
3ade5333 | 461 | if (current_thread) |
dc05df57 | 462 | do_windows_store_inferior_registers (regcache, r); |
3cee93ac | 463 | } |
24e60978 | 464 | |
33605d39 CF |
465 | /* Get the name of a given module at at given base address. If base_address |
466 | is zero return the first loaded module (which is always the name of the | |
467 | executable). */ | |
3ee6f623 | 468 | static int |
d3653bf6 | 469 | get_module_name (LPVOID base_address, char *dll_name_ret) |
1e37c281 JM |
470 | { |
471 | DWORD len; | |
472 | MODULEINFO mi; | |
473 | int i; | |
8e860359 | 474 | HMODULE dh_buf[1]; |
33605d39 | 475 | HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */ |
1e37c281 | 476 | DWORD cbNeeded; |
33605d39 CF |
477 | #ifdef __CYGWIN__ |
478 | char pathbuf[PATH_MAX + 1]; /* Temporary storage prior to converting to | |
479 | posix form */ | |
480 | #else | |
481 | char *pathbuf = dll_name_ret; /* Just copy directly to passed-in arg */ | |
482 | #endif | |
1e37c281 | 483 | |
1e37c281 | 484 | cbNeeded = 0; |
33605d39 | 485 | /* Find size of buffer needed to handle list of modules loaded in inferior */ |
2b008701 CF |
486 | if (!EnumProcessModules (current_process_handle, DllHandle, |
487 | sizeof (HMODULE), &cbNeeded) || !cbNeeded) | |
1e37c281 JM |
488 | goto failed; |
489 | ||
33605d39 | 490 | /* Allocate correct amount of space for module list */ |
8e860359 | 491 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
492 | if (!DllHandle) |
493 | goto failed; | |
494 | ||
33605d39 | 495 | /* Get the list of modules */ |
2b008701 | 496 | if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded, |
33605d39 | 497 | &cbNeeded)) |
1e37c281 JM |
498 | goto failed; |
499 | ||
29fe111d | 500 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 | 501 | { |
33605d39 | 502 | /* Get information on this module */ |
2b008701 CF |
503 | if (!GetModuleInformation (current_process_handle, DllHandle[i], |
504 | &mi, sizeof (mi))) | |
8a3fe4f8 | 505 | error (_("Can't get module info")); |
1e37c281 | 506 | |
d3653bf6 | 507 | if (!base_address || mi.lpBaseOfDll == base_address) |
33605d39 CF |
508 | { |
509 | /* Try to find the name of the given module */ | |
2b008701 CF |
510 | len = GetModuleFileNameExA (current_process_handle, |
511 | DllHandle[i], pathbuf, MAX_PATH); | |
33605d39 CF |
512 | if (len == 0) |
513 | error (_("Error getting dll name: %u."), (unsigned) GetLastError ()); | |
514 | #ifdef __CYGWIN__ | |
515 | /* Cygwin prefers that the path be in /x/y/z format */ | |
516 | cygwin_conv_to_full_posix_path (pathbuf, dll_name_ret); | |
517 | #endif | |
518 | return 1; /* success */ | |
519 | } | |
1e37c281 JM |
520 | } |
521 | ||
522 | failed: | |
523 | dll_name_ret[0] = '\0'; | |
33605d39 | 524 | return 0; /* failure */ |
1e37c281 JM |
525 | } |
526 | ||
450005e7 CF |
527 | /* Encapsulate the information required in a call to |
528 | symbol_file_add_args */ | |
8a892701 CF |
529 | struct safe_symbol_file_add_args |
530 | { | |
531 | char *name; | |
532 | int from_tty; | |
533 | struct section_addr_info *addrs; | |
534 | int mainline; | |
535 | int flags; | |
7c5c87c0 | 536 | struct ui_file *err, *out; |
8a892701 CF |
537 | struct objfile *ret; |
538 | }; | |
539 | ||
02e423b9 | 540 | /* Maintain a linked list of "so" information. */ |
3ee6f623 | 541 | struct lm_info |
02e423b9 | 542 | { |
d3653bf6 | 543 | LPVOID load_addr; |
3ee6f623 CF |
544 | }; |
545 | ||
546 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 547 | |
450005e7 CF |
548 | /* Call symbol_file_add with stderr redirected. We don't care if there |
549 | are errors. */ | |
8a892701 CF |
550 | static int |
551 | safe_symbol_file_add_stub (void *argv) | |
552 | { | |
3ee6f623 | 553 | #define p ((struct safe_symbol_file_add_args *) argv) |
8a892701 CF |
554 | p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags); |
555 | return !!p->ret; | |
556 | #undef p | |
557 | } | |
558 | ||
450005e7 | 559 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 560 | static void |
7c5c87c0 | 561 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 562 | { |
8e860359 | 563 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 564 | gdb_flush (gdb_stderr); |
7c5c87c0 | 565 | gdb_flush (gdb_stdout); |
d3ff4a77 | 566 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 567 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 568 | gdb_stderr = sp->err; |
9d3789f7 | 569 | gdb_stdout = sp->out; |
8e860359 | 570 | #undef sp |
8a892701 CF |
571 | } |
572 | ||
450005e7 | 573 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
574 | static struct objfile * |
575 | safe_symbol_file_add (char *name, int from_tty, | |
576 | struct section_addr_info *addrs, | |
577 | int mainline, int flags) | |
8a892701 CF |
578 | { |
579 | struct safe_symbol_file_add_args p; | |
580 | struct cleanup *cleanup; | |
581 | ||
7c5c87c0 | 582 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 583 | |
7c5c87c0 CF |
584 | p.err = gdb_stderr; |
585 | p.out = gdb_stdout; | |
450005e7 | 586 | gdb_flush (gdb_stderr); |
7c5c87c0 | 587 | gdb_flush (gdb_stdout); |
d3ff4a77 | 588 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 589 | gdb_stdout = ui_file_new (); |
8a892701 CF |
590 | p.name = name; |
591 | p.from_tty = from_tty; | |
592 | p.addrs = addrs; | |
593 | p.mainline = mainline; | |
594 | p.flags = flags; | |
595 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
596 | ||
597 | do_cleanups (cleanup); | |
598 | return p.ret; | |
599 | } | |
600 | ||
de1b3c3d | 601 | static struct so_list * |
dc05df57 | 602 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 603 | { |
3ee6f623 | 604 | struct so_list *so; |
3f8ad85b CF |
605 | char buf[MAX_PATH + 1]; |
606 | char cwd[MAX_PATH + 1]; | |
607 | char *p; | |
608 | WIN32_FIND_DATA w32_fd; | |
609 | HANDLE h = FindFirstFile(name, &w32_fd); | |
5633f842 | 610 | MEMORY_BASIC_INFORMATION m; |
3f8ad85b | 611 | |
6badb179 CF |
612 | if (h == INVALID_HANDLE_VALUE) |
613 | strcpy (buf, name); | |
614 | else | |
3f8ad85b | 615 | { |
c914e0cc CF |
616 | FindClose (h); |
617 | strcpy (buf, name); | |
618 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
619 | { | |
620 | p = strrchr (buf, '\\'); | |
621 | if (p) | |
622 | p[1] = '\0'; | |
623 | SetCurrentDirectory (buf); | |
624 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
625 | SetCurrentDirectory (cwd); | |
626 | } | |
3f8ad85b CF |
627 | } |
628 | ||
3ee6f623 CF |
629 | if (strcasecmp (buf, "ntdll.dll") == 0) |
630 | { | |
631 | GetSystemDirectory (buf, sizeof (buf)); | |
632 | strcat (buf, "\\ntdll.dll"); | |
633 | } | |
3929abe9 | 634 | so = XZALLOC (struct so_list); |
3ee6f623 CF |
635 | so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info)); |
636 | so->lm_info->load_addr = load_addr; | |
de1b3c3d | 637 | strcpy (so->so_original_name, name); |
10325bc5 PA |
638 | #ifndef __CYGWIN__ |
639 | strcpy (so->so_name, buf); | |
640 | #else | |
641 | cygwin_conv_to_posix_path (buf, so->so_name); | |
de1b3c3d PA |
642 | /* Record cygwin1.dll .text start/end. */ |
643 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
644 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
645 | { | |
646 | bfd *abfd; | |
647 | asection *text = NULL; | |
648 | CORE_ADDR text_vma; | |
8e860359 | 649 | |
610dd7f9 | 650 | abfd = bfd_openr (so->so_name, "pei-i386"); |
a244bdca | 651 | |
de1b3c3d PA |
652 | if (!abfd) |
653 | return so; | |
654 | ||
655 | if (bfd_check_format (abfd, bfd_object)) | |
656 | text = bfd_get_section_by_name (abfd, ".text"); | |
657 | ||
658 | if (!text) | |
659 | { | |
660 | bfd_close (abfd); | |
661 | return so; | |
662 | } | |
663 | ||
664 | /* The symbols in a dll are offset by 0x1000, which is the the | |
665 | offset from 0 of the first byte in an image - because of the | |
666 | file header and the section alignment. */ | |
dc05df57 CF |
667 | cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) load_addr + 0x1000); |
668 | cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text); | |
de1b3c3d PA |
669 | |
670 | bfd_close (abfd); | |
671 | } | |
10325bc5 | 672 | #endif |
de1b3c3d PA |
673 | |
674 | return so; | |
8e860359 CF |
675 | } |
676 | ||
3ee6f623 | 677 | static char * |
dfe7f3ac CF |
678 | get_image_name (HANDLE h, void *address, int unicode) |
679 | { | |
680 | static char buf[(2 * MAX_PATH) + 1]; | |
681 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
682 | char *address_ptr; | |
683 | int len = 0; | |
684 | char b[2]; | |
5732a500 | 685 | SIZE_T done; |
dfe7f3ac CF |
686 | |
687 | /* Attempt to read the name of the dll that was detected. | |
688 | This is documented to work only when actively debugging | |
689 | a program. It will not work for attached processes. */ | |
690 | if (address == NULL) | |
691 | return NULL; | |
692 | ||
dfe7f3ac CF |
693 | /* See if we could read the address of a string, and that the |
694 | address isn't null. */ | |
9f476a01 | 695 | if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) |
6f17862b | 696 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
697 | return NULL; |
698 | ||
699 | /* Find the length of the string */ | |
6f17862b CF |
700 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
701 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
702 | continue; | |
dfe7f3ac CF |
703 | |
704 | if (!unicode) | |
705 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
706 | else | |
707 | { | |
708 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
709 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
710 | &done); | |
711 | ||
712 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
713 | } | |
714 | ||
715 | return buf; | |
716 | } | |
717 | ||
24e60978 SC |
718 | /* Wait for child to do something. Return pid of child, or -1 in case |
719 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 720 | static int |
0a65a603 | 721 | handle_load_dll (void *dummy) |
24e60978 | 722 | { |
3a4b77d8 | 723 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
3cee93ac | 724 | char dll_buf[MAX_PATH + 1]; |
450005e7 | 725 | char *dll_name = NULL; |
3cee93ac | 726 | |
3a4b77d8 | 727 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 728 | |
d3653bf6 | 729 | if (!get_module_name (event->lpBaseOfDll, dll_buf)) |
8e860359 | 730 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 731 | |
1e37c281 | 732 | dll_name = dll_buf; |
24e60978 | 733 | |
dfe7f3ac | 734 | if (*dll_name == '\0') |
de1b3c3d PA |
735 | dll_name = get_image_name (current_process_handle, |
736 | event->lpImageName, event->fUnicode); | |
3cee93ac CF |
737 | if (!dll_name) |
738 | return 1; | |
739 | ||
dc05df57 | 740 | solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll); |
de1b3c3d | 741 | solib_end = solib_end->next; |
450005e7 | 742 | |
a74ce742 PM |
743 | DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name, |
744 | host_address_to_string (solib_end->lm_info->load_addr))); | |
7488902c | 745 | |
450005e7 CF |
746 | return 1; |
747 | } | |
748 | ||
3ee6f623 | 749 | static void |
dc05df57 | 750 | windows_free_so (struct so_list *so) |
3ee6f623 | 751 | { |
3ee6f623 CF |
752 | if (so->lm_info) |
753 | xfree (so->lm_info); | |
de1b3c3d | 754 | xfree (so); |
3cb8e7f6 CF |
755 | } |
756 | ||
d3ff4a77 | 757 | static int |
0a65a603 | 758 | handle_unload_dll (void *dummy) |
d3ff4a77 | 759 | { |
d3653bf6 | 760 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 761 | struct so_list *so; |
d3ff4a77 CF |
762 | |
763 | for (so = &solib_start; so->next != NULL; so = so->next) | |
3ee6f623 | 764 | if (so->next->lm_info->load_addr == lpBaseOfDll) |
d3ff4a77 | 765 | { |
3ee6f623 | 766 | struct so_list *sodel = so->next; |
d3ff4a77 CF |
767 | so->next = sodel->next; |
768 | if (!so->next) | |
769 | solib_end = so; | |
7488902c PM |
770 | DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name)); |
771 | ||
dc05df57 | 772 | windows_free_so (sodel); |
3929abe9 | 773 | solib_add (NULL, 0, NULL, auto_solib_add); |
d3ff4a77 CF |
774 | return 1; |
775 | } | |
3929abe9 | 776 | |
a74ce742 PM |
777 | error (_("Error: dll starting at %s not found."), |
778 | host_address_to_string (lpBaseOfDll)); | |
d3ff4a77 CF |
779 | |
780 | return 0; | |
781 | } | |
782 | ||
450005e7 | 783 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 784 | static void |
dc05df57 | 785 | windows_clear_solib (void) |
450005e7 | 786 | { |
450005e7 CF |
787 | solib_start.next = NULL; |
788 | solib_end = &solib_start; | |
450005e7 | 789 | } |
295732ea | 790 | |
450005e7 CF |
791 | /* Load DLL symbol info. */ |
792 | void | |
7470a420 | 793 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 794 | { |
8e860359 | 795 | int n; |
450005e7 | 796 | dont_repeat (); |
8e860359 | 797 | |
450005e7 | 798 | if (args == NULL) |
8a3fe4f8 | 799 | error (_("dll-symbols requires a file name")); |
450005e7 | 800 | |
8e860359 CF |
801 | n = strlen (args); |
802 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
803 | { | |
804 | char *newargs = (char *) alloca (n + 4 + 1); | |
805 | strcpy (newargs, args); | |
806 | strcat (newargs, ".dll"); | |
807 | args = newargs; | |
808 | } | |
809 | ||
7470a420 | 810 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 811 | } |
450005e7 | 812 | |
3cee93ac CF |
813 | /* Handle DEBUG_STRING output from child process. |
814 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
815 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
816 | static int | |
817 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
818 | { | |
a244bdca CF |
819 | char *s = NULL; |
820 | int retval = 0; | |
3cee93ac CF |
821 | |
822 | if (!target_read_string | |
2c647436 PM |
823 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, |
824 | &s, 1024, 0) | |
3cee93ac | 825 | || !s || !*s) |
a244bdca CF |
826 | /* nothing to do */; |
827 | else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0) | |
3cee93ac | 828 | { |
10325bc5 | 829 | #ifdef __CYGWIN__ |
d3a09475 | 830 | if (strncmp (s, "cYg", 3) != 0) |
10325bc5 | 831 | #endif |
8a3fe4f8 | 832 | warning (("%s"), s); |
3cee93ac | 833 | } |
cb832706 | 834 | #ifdef __COPY_CONTEXT_SIZE |
d3a09475 | 835 | else |
3cee93ac | 836 | { |
a244bdca CF |
837 | /* Got a cygwin signal marker. A cygwin signal is followed by the signal number |
838 | itself and then optionally followed by the thread id and address to saved context | |
839 | within the DLL. If these are supplied, then the given thread is assumed to have | |
840 | issued the signal and the context from the thread is assumed to be stored at the | |
841 | given address in the inferior. Tell gdb to treat this like a real signal. */ | |
3cee93ac | 842 | char *p; |
3929abe9 | 843 | int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
a244bdca | 844 | int gotasig = target_signal_from_host (sig); |
0714f9bf SS |
845 | ourstatus->value.sig = gotasig; |
846 | if (gotasig) | |
a244bdca CF |
847 | { |
848 | LPCVOID x; | |
849 | DWORD n; | |
850 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
851 | retval = strtoul (p, &p, 0); | |
852 | if (!retval) | |
853 | retval = main_thread_id; | |
854 | else if ((x = (LPCVOID) strtoul (p, &p, 0)) | |
855 | && ReadProcessMemory (current_process_handle, x, | |
856 | &saved_context, __COPY_CONTEXT_SIZE, &n) | |
857 | && n == __COPY_CONTEXT_SIZE) | |
858 | have_saved_context = 1; | |
859 | current_event.dwThreadId = retval; | |
860 | } | |
3cee93ac | 861 | } |
cb832706 | 862 | #endif |
3cee93ac | 863 | |
a244bdca CF |
864 | if (s) |
865 | xfree (s); | |
866 | return retval; | |
3cee93ac | 867 | } |
24e60978 | 868 | |
c1748f97 PM |
869 | static int |
870 | display_selector (HANDLE thread, DWORD sel) | |
871 | { | |
872 | LDT_ENTRY info; | |
873 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
874 | { | |
875 | int base, limit; | |
876 | printf_filtered ("0x%03lx: ", sel); | |
877 | if (!info.HighWord.Bits.Pres) | |
baa93fa6 CF |
878 | { |
879 | puts_filtered ("Segment not present\n"); | |
880 | return 0; | |
881 | } | |
c1748f97 PM |
882 | base = (info.HighWord.Bits.BaseHi << 24) + |
883 | (info.HighWord.Bits.BaseMid << 16) | |
884 | + info.BaseLow; | |
885 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
886 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 887 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
888 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
889 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 890 | puts_filtered(" 32-bit "); |
c1748f97 | 891 | else |
baa93fa6 | 892 | puts_filtered(" 16-bit "); |
c1748f97 PM |
893 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
894 | { | |
895 | case 0: | |
baa93fa6 CF |
896 | puts_filtered ("Data (Read-Only, Exp-up"); |
897 | break; | |
c1748f97 | 898 | case 1: |
baa93fa6 CF |
899 | puts_filtered ("Data (Read/Write, Exp-up"); |
900 | break; | |
c1748f97 | 901 | case 2: |
baa93fa6 CF |
902 | puts_filtered ("Unused segment ("); |
903 | break; | |
c1748f97 | 904 | case 3: |
baa93fa6 CF |
905 | puts_filtered ("Data (Read/Write, Exp-down"); |
906 | break; | |
c1748f97 | 907 | case 4: |
baa93fa6 CF |
908 | puts_filtered ("Code (Exec-Only, N.Conf"); |
909 | break; | |
c1748f97 | 910 | case 5: |
baa93fa6 | 911 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
912 | break; |
913 | case 6: | |
baa93fa6 | 914 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
915 | break; |
916 | case 7: | |
baa93fa6 | 917 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
918 | break; |
919 | default: | |
920 | printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); | |
921 | } | |
922 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 923 | puts_filtered(", N.Acc"); |
c1748f97 PM |
924 | puts_filtered (")\n"); |
925 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
926 | puts_filtered("System selector "); | |
927 | printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); | |
928 | if (info.HighWord.Bits.Granularity) | |
baa93fa6 | 929 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
930 | else |
931 | puts_filtered ("Byte granular.\n"); | |
932 | return 1; | |
933 | } | |
934 | else | |
935 | { | |
936 | printf_filtered ("Invalid selector 0x%lx.\n",sel); | |
937 | return 0; | |
938 | } | |
939 | } | |
940 | ||
941 | static void | |
942 | display_selectors (char * args, int from_tty) | |
943 | { | |
944 | if (!current_thread) | |
945 | { | |
946 | puts_filtered ("Impossible to display selectors now.\n"); | |
947 | return; | |
948 | } | |
949 | if (!args) | |
950 | { | |
951 | ||
952 | puts_filtered ("Selector $cs\n"); | |
953 | display_selector (current_thread->h, | |
baa93fa6 | 954 | current_thread->context.SegCs); |
c1748f97 PM |
955 | puts_filtered ("Selector $ds\n"); |
956 | display_selector (current_thread->h, | |
baa93fa6 | 957 | current_thread->context.SegDs); |
c1748f97 PM |
958 | puts_filtered ("Selector $es\n"); |
959 | display_selector (current_thread->h, | |
baa93fa6 | 960 | current_thread->context.SegEs); |
c1748f97 PM |
961 | puts_filtered ("Selector $ss\n"); |
962 | display_selector (current_thread->h, | |
baa93fa6 | 963 | current_thread->context.SegSs); |
c1748f97 PM |
964 | puts_filtered ("Selector $fs\n"); |
965 | display_selector (current_thread->h, | |
966 | current_thread->context.SegFs); | |
967 | puts_filtered ("Selector $gs\n"); | |
968 | display_selector (current_thread->h, | |
baa93fa6 | 969 | current_thread->context.SegGs); |
c1748f97 PM |
970 | } |
971 | else | |
972 | { | |
973 | int sel; | |
974 | sel = parse_and_eval_long (args); | |
975 | printf_filtered ("Selector \"%s\"\n",args); | |
976 | display_selector (current_thread->h, sel); | |
977 | } | |
978 | } | |
979 | ||
980 | static struct cmd_list_element *info_w32_cmdlist = NULL; | |
981 | ||
982 | static void | |
983 | info_w32_command (char *args, int from_tty) | |
984 | { | |
985 | help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); | |
986 | } | |
987 | ||
988 | ||
7393af7c | 989 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
a74ce742 PM |
990 | printf_unfiltered ("gdb: Target exception %s at %s\n", x, \ |
991 | host_address_to_string (\ | |
992 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)) | |
7393af7c | 993 | |
36339ecd | 994 | static int |
450005e7 | 995 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 996 | { |
3cee93ac | 997 | thread_info *th; |
29fe111d | 998 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 999 | |
29fe111d | 1000 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1001 | |
3cee93ac CF |
1002 | /* Record the context of the current thread */ |
1003 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 1004 | |
29fe111d | 1005 | switch (code) |
24e60978 | 1006 | { |
1ef980b9 | 1007 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c PM |
1008 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
1009 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
10325bc5 | 1010 | #ifdef __CYGWIN__ |
8da8e0b3 | 1011 | { |
a244bdca CF |
1012 | /* See if the access violation happened within the cygwin DLL itself. Cygwin uses |
1013 | a kind of exception handling to deal with passed-in invalid addresses. gdb | |
1014 | should not treat these as real SEGVs since they will be silently handled by | |
1015 | cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process | |
1016 | and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up | |
1017 | within the text segment of the DLL itself. */ | |
8da8e0b3 | 1018 | char *fn; |
dc05df57 | 1019 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) current_event.u.Exception.ExceptionRecord.ExceptionAddress; |
09280ddf | 1020 | if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end)) |
a244bdca CF |
1021 | || (find_pc_partial_function (addr, &fn, NULL, NULL) |
1022 | && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)) | |
8da8e0b3 CF |
1023 | return 0; |
1024 | } | |
10325bc5 | 1025 | #endif |
7393af7c PM |
1026 | break; |
1027 | case STATUS_STACK_OVERFLOW: | |
1028 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
1ef980b9 | 1029 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
7393af7c PM |
1030 | break; |
1031 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1032 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
1033 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1034 | break; | |
1035 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1036 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
1037 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1038 | break; | |
1039 | case STATUS_FLOAT_INEXACT_RESULT: | |
1040 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
1041 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1042 | break; | |
1043 | case STATUS_FLOAT_INVALID_OPERATION: | |
1044 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
1045 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1046 | break; | |
1047 | case STATUS_FLOAT_OVERFLOW: | |
1048 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
1049 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1050 | break; | |
1051 | case STATUS_FLOAT_STACK_CHECK: | |
1052 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
1053 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 | 1054 | break; |
3b7c8b74 | 1055 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c PM |
1056 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
1057 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1058 | break; | |
3b7c8b74 | 1059 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c PM |
1060 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
1061 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1062 | break; | |
3b7c8b74 | 1063 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1064 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
3b7c8b74 | 1065 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
3b7c8b74 | 1066 | break; |
7393af7c PM |
1067 | case STATUS_INTEGER_OVERFLOW: |
1068 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
1069 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 SC |
1070 | break; |
1071 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1072 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
1ef980b9 SC |
1073 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1074 | break; | |
1075 | case DBG_CONTROL_C: | |
7393af7c | 1076 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
1ef980b9 | 1077 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
1078 | break; |
1079 | case DBG_CONTROL_BREAK: | |
7393af7c | 1080 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
5b421780 | 1081 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
1ef980b9 SC |
1082 | break; |
1083 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1084 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
1ef980b9 SC |
1085 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1086 | break; | |
8227c82d | 1087 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c PM |
1088 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
1089 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1090 | break; | |
1091 | case EXCEPTION_PRIV_INSTRUCTION: | |
1092 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
1093 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1094 | break; | |
1095 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1096 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
8227c82d CF |
1097 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
1098 | break; | |
1ef980b9 | 1099 | default: |
a244bdca | 1100 | /* Treat unhandled first chance exceptions specially. */ |
02e423b9 | 1101 | if (current_event.u.Exception.dwFirstChance) |
a244bdca | 1102 | return -1; |
a74ce742 PM |
1103 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n", |
1104 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1105 | host_address_to_string ( | |
1106 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)); | |
24e60978 | 1107 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 1108 | break; |
24e60978 | 1109 | } |
24e60978 | 1110 | exception_count++; |
7393af7c | 1111 | last_sig = ourstatus->value.sig; |
36339ecd | 1112 | return 1; |
24e60978 SC |
1113 | } |
1114 | ||
3cee93ac CF |
1115 | /* Resume all artificially suspended threads if we are continuing |
1116 | execution */ | |
1117 | static BOOL | |
dc05df57 | 1118 | windows_continue (DWORD continue_status, int id) |
3cee93ac CF |
1119 | { |
1120 | int i; | |
1121 | thread_info *th; | |
1122 | BOOL res; | |
1123 | ||
7393af7c PM |
1124 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n", |
1125 | current_event.dwProcessId, current_event.dwThreadId, | |
dfe7f3ac | 1126 | continue_status == DBG_CONTINUE ? |
7393af7c | 1127 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
6537bb24 PA |
1128 | |
1129 | for (th = &thread_head; (th = th->next) != NULL;) | |
1130 | if ((id == -1 || id == (int) th->id) | |
1131 | && th->suspended) | |
1132 | { | |
1133 | if (debug_registers_changed) | |
1134 | { | |
1135 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1136 | th->context.Dr0 = dr[0]; | |
1137 | th->context.Dr1 = dr[1]; | |
1138 | th->context.Dr2 = dr[2]; | |
1139 | th->context.Dr3 = dr[3]; | |
1140 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1141 | th->context.Dr7 = dr[7]; | |
1142 | } | |
1143 | if (th->context.ContextFlags) | |
1144 | { | |
1145 | CHECK (SetThreadContext (th->h, &th->context)); | |
1146 | th->context.ContextFlags = 0; | |
1147 | } | |
1148 | if (th->suspended > 0) | |
1149 | (void) ResumeThread (th->h); | |
1150 | th->suspended = 0; | |
1151 | } | |
1152 | ||
0714f9bf SS |
1153 | res = ContinueDebugEvent (current_event.dwProcessId, |
1154 | current_event.dwThreadId, | |
1155 | continue_status); | |
3cee93ac | 1156 | |
fa4ba8da | 1157 | debug_registers_changed = 0; |
3cee93ac CF |
1158 | return res; |
1159 | } | |
1160 | ||
d6dc8049 CF |
1161 | /* Called in pathological case where Windows fails to send a |
1162 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1163 | static DWORD |
5439edaa | 1164 | fake_create_process (void) |
3ade5333 CF |
1165 | { |
1166 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1167 | current_event.dwProcessId); | |
bf25528d CF |
1168 | if (current_process_handle != NULL) |
1169 | open_process_used = 1; | |
1170 | else | |
1171 | { | |
1172 | error (_("OpenProcess call failed, GetLastError = %lud\n"), | |
1173 | GetLastError ()); | |
1174 | /* We can not debug anything in that case. */ | |
1175 | } | |
3ade5333 | 1176 | main_thread_id = current_event.dwThreadId; |
dc05df57 CF |
1177 | current_thread = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
1178 | current_event.dwThreadId), | |
1179 | current_event.u.CreateThread.hThread); | |
3ade5333 CF |
1180 | return main_thread_id; |
1181 | } | |
1182 | ||
a244bdca | 1183 | static void |
28439f5e PA |
1184 | windows_resume (struct target_ops *ops, |
1185 | ptid_t ptid, int step, enum target_signal sig) | |
a244bdca CF |
1186 | { |
1187 | thread_info *th; | |
1188 | DWORD continue_status = DBG_CONTINUE; | |
1189 | ||
2dc38344 PA |
1190 | /* A specific PTID means `step only this thread id'. */ |
1191 | int resume_all = ptid_equal (ptid, minus_one_ptid); | |
1192 | ||
1193 | /* If we're continuing all threads, it's the current inferior that | |
1194 | should be handled specially. */ | |
1195 | if (resume_all) | |
1196 | ptid = inferior_ptid; | |
a244bdca CF |
1197 | |
1198 | if (sig != TARGET_SIGNAL_0) | |
1199 | { | |
1200 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1201 | { | |
1202 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1203 | } | |
1204 | else if (sig == last_sig) | |
1205 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1206 | else | |
1207 | #if 0 | |
1208 | /* This code does not seem to work, because | |
1209 | the kernel does probably not consider changes in the ExceptionRecord | |
1210 | structure when passing the exception to the inferior. | |
1211 | Note that this seems possible in the exception handler itself. */ | |
1212 | { | |
1213 | int i; | |
1214 | for (i = 0; xlate[i].them != -1; i++) | |
1215 | if (xlate[i].us == sig) | |
1216 | { | |
1217 | current_event.u.Exception.ExceptionRecord.ExceptionCode = | |
1218 | xlate[i].them; | |
1219 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1220 | break; | |
1221 | } | |
1222 | if (continue_status == DBG_CONTINUE) | |
1223 | { | |
1224 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1225 | } | |
1226 | } | |
1227 | #endif | |
1228 | DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n", | |
1229 | last_sig)); | |
1230 | } | |
1231 | ||
1232 | last_sig = TARGET_SIGNAL_0; | |
1233 | ||
dc05df57 | 1234 | DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n", |
2dc38344 | 1235 | ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig)); |
a244bdca CF |
1236 | |
1237 | /* Get context for currently selected thread */ | |
2dc38344 | 1238 | th = thread_rec (ptid_get_tid (inferior_ptid), FALSE); |
a244bdca CF |
1239 | if (th) |
1240 | { | |
1241 | if (step) | |
1242 | { | |
1243 | /* Single step by setting t bit */ | |
28439f5e PA |
1244 | windows_fetch_inferior_registers (ops, |
1245 | get_current_regcache (), | |
1246 | gdbarch_ps_regnum (current_gdbarch)); | |
a244bdca CF |
1247 | th->context.EFlags |= FLAG_TRACE_BIT; |
1248 | } | |
1249 | ||
1250 | if (th->context.ContextFlags) | |
1251 | { | |
1252 | if (debug_registers_changed) | |
1253 | { | |
1254 | th->context.Dr0 = dr[0]; | |
1255 | th->context.Dr1 = dr[1]; | |
1256 | th->context.Dr2 = dr[2]; | |
1257 | th->context.Dr3 = dr[3]; | |
6537bb24 | 1258 | th->context.Dr6 = DR6_CLEAR_VALUE; |
a244bdca CF |
1259 | th->context.Dr7 = dr[7]; |
1260 | } | |
1261 | CHECK (SetThreadContext (th->h, &th->context)); | |
1262 | th->context.ContextFlags = 0; | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | /* Allow continuing with the same signal that interrupted us. | |
1267 | Otherwise complain. */ | |
1268 | ||
2dc38344 | 1269 | if (resume_all) |
dc05df57 | 1270 | windows_continue (continue_status, -1); |
2dc38344 | 1271 | else |
dc05df57 | 1272 | windows_continue (continue_status, ptid_get_tid (ptid)); |
a244bdca CF |
1273 | } |
1274 | ||
695de547 CF |
1275 | /* Ctrl-C handler used when the inferior is not run in the same console. The |
1276 | handler is in charge of interrupting the inferior using DebugBreakProcess. | |
1277 | Note that this function is not available prior to Windows XP. In this case | |
1278 | we emit a warning. */ | |
1279 | BOOL WINAPI | |
1280 | ctrl_c_handler (DWORD event_type) | |
1281 | { | |
1282 | const int attach_flag = current_inferior ()->attach_flag; | |
1283 | ||
1284 | /* Only handle Ctrl-C event. Ignore others. */ | |
1285 | if (event_type != CTRL_C_EVENT) | |
1286 | return FALSE; | |
1287 | ||
1288 | /* If the inferior and the debugger share the same console, do nothing as | |
1289 | the inferior has also received the Ctrl-C event. */ | |
1290 | if (!new_console && !attach_flag) | |
1291 | return TRUE; | |
1292 | ||
1293 | if (!DebugBreakProcess (current_process_handle)) | |
1294 | warning (_("\ | |
1295 | Could not interrupt program. Press Ctrl-c in the program console.")); | |
1296 | ||
1297 | /* Return true to tell that Ctrl-C has been handled. */ | |
1298 | return TRUE; | |
1299 | } | |
1300 | ||
8a892701 | 1301 | /* Get the next event from the child. Return 1 if the event requires |
695de547 | 1302 | handling by WFI (or whatever). */ |
1e37c281 | 1303 | static int |
28439f5e PA |
1304 | get_windows_debug_event (struct target_ops *ops, |
1305 | int pid, struct target_waitstatus *ourstatus) | |
1e37c281 JM |
1306 | { |
1307 | BOOL debug_event; | |
8a892701 | 1308 | DWORD continue_status, event_code; |
87a45c96 | 1309 | thread_info *th; |
8a892701 | 1310 | static thread_info dummy_thread_info; |
450005e7 | 1311 | int retval = 0; |
1e37c281 | 1312 | |
7393af7c | 1313 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 | 1314 | |
8a892701 | 1315 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1316 | goto out; |
1e37c281 JM |
1317 | |
1318 | event_count++; | |
1319 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1320 | |
8a892701 | 1321 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1322 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
87a45c96 | 1323 | th = NULL; |
a244bdca | 1324 | have_saved_context = 0; |
8a892701 CF |
1325 | |
1326 | switch (event_code) | |
1e37c281 JM |
1327 | { |
1328 | case CREATE_THREAD_DEBUG_EVENT: | |
1329 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
1330 | (unsigned) current_event.dwProcessId, |
1331 | (unsigned) current_event.dwThreadId, | |
1332 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac | 1333 | if (saw_create != 1) |
3ade5333 | 1334 | { |
181e7f93 PA |
1335 | struct inferior *inf; |
1336 | inf = find_inferior_pid (current_event.dwProcessId); | |
1337 | if (!saw_create && inf->attach_flag) | |
3ade5333 | 1338 | { |
d6dc8049 CF |
1339 | /* Kludge around a Windows bug where first event is a create |
1340 | thread event. Caused when attached process does not have | |
1341 | a main thread. */ | |
3a3e9ee3 | 1342 | retval = fake_create_process (); |
181e7f93 PA |
1343 | if (retval) |
1344 | saw_create++; | |
3ade5333 CF |
1345 | } |
1346 | break; | |
1347 | } | |
1e37c281 | 1348 | /* Record the existence of this thread */ |
450005e7 | 1349 | retval = current_event.dwThreadId; |
dc05df57 | 1350 | th = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
2dc38344 PA |
1351 | current_event.dwThreadId), |
1352 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
1353 | break; |
1354 | ||
1355 | case EXIT_THREAD_DEBUG_EVENT: | |
1356 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1357 | (unsigned) current_event.dwProcessId, |
1358 | (unsigned) current_event.dwThreadId, | |
1359 | "EXIT_THREAD_DEBUG_EVENT")); | |
87a45c96 CF |
1360 | if (current_event.dwThreadId != main_thread_id) |
1361 | { | |
dc05df57 | 1362 | windows_delete_thread (ptid_build (current_event.dwProcessId, 0, |
2dc38344 | 1363 | current_event.dwThreadId)); |
87a45c96 CF |
1364 | th = &dummy_thread_info; |
1365 | } | |
1e37c281 JM |
1366 | break; |
1367 | ||
1368 | case CREATE_PROCESS_DEBUG_EVENT: | |
1369 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1370 | (unsigned) current_event.dwProcessId, |
1371 | (unsigned) current_event.dwThreadId, | |
1372 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1373 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1374 | if (++saw_create != 1) |
bf25528d | 1375 | break; |
1e37c281 | 1376 | |
dfe7f3ac | 1377 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
87a45c96 | 1378 | if (main_thread_id) |
695de547 CF |
1379 | windows_delete_thread (ptid_build (current_event.dwProcessId, 0, |
1380 | main_thread_id)); | |
9d3789f7 | 1381 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 1382 | /* Add the main thread */ |
dc05df57 | 1383 | th = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
695de547 CF |
1384 | current_event.dwThreadId), |
1385 | current_event.u.CreateProcessInfo.hThread); | |
3a3e9ee3 | 1386 | retval = current_event.dwThreadId; |
1e37c281 JM |
1387 | break; |
1388 | ||
1389 | case EXIT_PROCESS_DEBUG_EVENT: | |
1390 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1391 | (unsigned) current_event.dwProcessId, |
1392 | (unsigned) current_event.dwThreadId, | |
1393 | "EXIT_PROCESS_DEBUG_EVENT")); | |
dfe7f3ac CF |
1394 | if (saw_create != 1) |
1395 | break; | |
1e37c281 JM |
1396 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
1397 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
9d3789f7 | 1398 | retval = main_thread_id; |
8a892701 | 1399 | break; |
1e37c281 JM |
1400 | |
1401 | case LOAD_DLL_DEBUG_EVENT: | |
1402 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1403 | (unsigned) current_event.dwProcessId, |
1404 | (unsigned) current_event.dwThreadId, | |
1405 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1406 | CloseHandle (current_event.u.LoadDll.hFile); |
dfe7f3ac CF |
1407 | if (saw_create != 1) |
1408 | break; | |
8a892701 | 1409 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
450005e7 CF |
1410 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1411 | ourstatus->value.integer = 0; | |
9d3789f7 | 1412 | retval = main_thread_id; |
1e37c281 JM |
1413 | break; |
1414 | ||
1415 | case UNLOAD_DLL_DEBUG_EVENT: | |
1416 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1417 | (unsigned) current_event.dwProcessId, |
1418 | (unsigned) current_event.dwThreadId, | |
1419 | "UNLOAD_DLL_DEBUG_EVENT")); | |
dfe7f3ac CF |
1420 | if (saw_create != 1) |
1421 | break; | |
d3ff4a77 | 1422 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
de1b3c3d PA |
1423 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1424 | ourstatus->value.integer = 0; | |
1425 | retval = main_thread_id; | |
d3ff4a77 | 1426 | break; |
1e37c281 JM |
1427 | |
1428 | case EXCEPTION_DEBUG_EVENT: | |
1429 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", | |
8a892701 CF |
1430 | (unsigned) current_event.dwProcessId, |
1431 | (unsigned) current_event.dwThreadId, | |
1432 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1433 | if (saw_create != 1) |
1434 | break; | |
a244bdca CF |
1435 | switch (handle_exception (ourstatus)) |
1436 | { | |
1437 | case 0: | |
1438 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1439 | break; | |
1440 | case 1: | |
1441 | retval = current_event.dwThreadId; | |
1442 | break; | |
1443 | case -1: | |
1444 | last_sig = 1; | |
1445 | continue_status = -1; | |
1446 | break; | |
1447 | } | |
1e37c281 JM |
1448 | break; |
1449 | ||
8a892701 | 1450 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1e37c281 | 1451 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n", |
8a892701 CF |
1452 | (unsigned) current_event.dwProcessId, |
1453 | (unsigned) current_event.dwThreadId, | |
1454 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1455 | if (saw_create != 1) |
1456 | break; | |
a244bdca | 1457 | retval = handle_output_debug_string (ourstatus); |
1e37c281 | 1458 | break; |
9d3789f7 | 1459 | |
1e37c281 | 1460 | default: |
dfe7f3ac CF |
1461 | if (saw_create != 1) |
1462 | break; | |
29fe111d CF |
1463 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1464 | (DWORD) current_event.dwProcessId, | |
1465 | (DWORD) current_event.dwThreadId); | |
1466 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
1467 | current_event.dwDebugEventCode); |
1468 | break; | |
1469 | } | |
1470 | ||
dfe7f3ac | 1471 | if (!retval || saw_create != 1) |
a244bdca CF |
1472 | { |
1473 | if (continue_status == -1) | |
02529b48 | 1474 | windows_resume (ops, minus_one_ptid, 0, 1); |
a244bdca | 1475 | else |
dc05df57 | 1476 | CHECK (windows_continue (continue_status, -1)); |
a244bdca | 1477 | } |
450005e7 | 1478 | else |
9d3789f7 | 1479 | { |
2dc38344 PA |
1480 | inferior_ptid = ptid_build (current_event.dwProcessId, 0, |
1481 | retval); | |
3ade5333 | 1482 | current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE); |
9d3789f7 | 1483 | } |
1e37c281 JM |
1484 | |
1485 | out: | |
450005e7 | 1486 | return retval; |
1e37c281 JM |
1487 | } |
1488 | ||
2dc38344 | 1489 | /* Wait for interesting events to occur in the target process. */ |
39f77062 | 1490 | static ptid_t |
117de6a9 PA |
1491 | windows_wait (struct target_ops *ops, |
1492 | ptid_t ptid, struct target_waitstatus *ourstatus) | |
24e60978 | 1493 | { |
2dc38344 | 1494 | int pid = -1; |
39f77062 | 1495 | |
c44537cf CV |
1496 | target_terminal_ours (); |
1497 | ||
24e60978 SC |
1498 | /* We loop when we get a non-standard exception rather than return |
1499 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1500 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
1501 | the birth or death of threads, which mean that the current thread |
1502 | isn't necessarily what you think it is. */ | |
1503 | ||
1504 | while (1) | |
450005e7 | 1505 | { |
c57918b2 | 1506 | int retval; |
2b008701 | 1507 | |
695de547 CF |
1508 | /* If the user presses Ctrl-c while the debugger is waiting |
1509 | for an event, he expects the debugger to interrupt his program | |
1510 | and to get the prompt back. There are two possible situations: | |
1511 | ||
1512 | - The debugger and the program do not share the console, in | |
1513 | which case the Ctrl-c event only reached the debugger. | |
1514 | In that case, the ctrl_c handler will take care of interrupting | |
1515 | the inferior. Note that this case is working starting with | |
1516 | Windows XP. For Windows 2000, Ctrl-C should be pressed in the | |
1517 | inferior console. | |
1518 | ||
1519 | - The debugger and the program share the same console, in which | |
1520 | case both debugger and inferior will receive the Ctrl-c event. | |
1521 | In that case the ctrl_c handler will ignore the event, as the | |
1522 | Ctrl-c event generated inside the inferior will trigger the | |
1523 | expected debug event. | |
1524 | ||
1525 | FIXME: brobecker/2008-05-20: If the inferior receives the | |
1526 | signal first and the delay until GDB receives that signal | |
1527 | is sufficiently long, GDB can sometimes receive the SIGINT | |
1528 | after we have unblocked the CTRL+C handler. This would | |
1529 | lead to the debugger stopping prematurely while handling | |
1530 | the new-thread event that comes with the handling of the SIGINT | |
1531 | inside the inferior, and then stop again immediately when | |
1532 | the user tries to resume the execution in the inferior. | |
1533 | This is a classic race that we should try to fix one day. */ | |
1534 | SetConsoleCtrlHandler (&ctrl_c_handler, TRUE); | |
28439f5e | 1535 | retval = get_windows_debug_event (ops, pid, ourstatus); |
695de547 | 1536 | SetConsoleCtrlHandler (&ctrl_c_handler, FALSE); |
c57918b2 | 1537 | |
450005e7 | 1538 | if (retval) |
2dc38344 | 1539 | return ptid_build (current_event.dwProcessId, 0, retval); |
450005e7 CF |
1540 | else |
1541 | { | |
1542 | int detach = 0; | |
3cee93ac | 1543 | |
98bbd631 AC |
1544 | if (deprecated_ui_loop_hook != NULL) |
1545 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1546 | |
450005e7 | 1547 | if (detach) |
7d85a9c0 | 1548 | windows_kill_inferior (ops); |
450005e7 CF |
1549 | } |
1550 | } | |
24e60978 SC |
1551 | } |
1552 | ||
9d3789f7 | 1553 | static void |
dc05df57 | 1554 | do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching) |
9d3789f7 CF |
1555 | { |
1556 | extern int stop_after_trap; | |
fa4ba8da | 1557 | int i; |
d6b48e9c | 1558 | struct inferior *inf; |
2020b7ab | 1559 | struct thread_info *tp; |
9d3789f7 | 1560 | |
7393af7c | 1561 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 CF |
1562 | event_count = 0; |
1563 | exception_count = 0; | |
bf25528d | 1564 | open_process_used = 0; |
fa4ba8da | 1565 | debug_registers_changed = 0; |
dfe7f3ac | 1566 | debug_registers_used = 0; |
fa4ba8da PM |
1567 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1568 | dr[i] = 0; | |
10325bc5 | 1569 | #ifdef __CYGWIN__ |
de1b3c3d | 1570 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1571 | #endif |
9d3789f7 CF |
1572 | current_event.dwProcessId = pid; |
1573 | memset (¤t_event, 0, sizeof (current_event)); | |
0795be10 | 1574 | push_target (ops); |
cb851954 | 1575 | disable_breakpoints_in_shlibs (); |
dc05df57 | 1576 | windows_clear_solib (); |
9d3789f7 CF |
1577 | clear_proceed_status (); |
1578 | init_wait_for_inferior (); | |
1579 | ||
d6b48e9c | 1580 | inf = add_inferior (pid); |
181e7f93 | 1581 | inf->attach_flag = attaching; |
7f9f62ba | 1582 | |
9f9d052e PM |
1583 | /* Make the new process the current inferior, so terminal handling |
1584 | can rely on it. When attaching, we don't know about any thread | |
1585 | id here, but that's OK --- nothing should be referencing the | |
dc05df57 | 1586 | current thread until we report an event out of windows_wait. */ |
9f9d052e PM |
1587 | inferior_ptid = pid_to_ptid (pid); |
1588 | ||
c44537cf | 1589 | terminal_init_inferior_with_pgrp (pid); |
9d3789f7 CF |
1590 | target_terminal_inferior (); |
1591 | ||
d6b48e9c | 1592 | inf->stop_soon = STOP_QUIETLY; |
9d3789f7 CF |
1593 | while (1) |
1594 | { | |
1595 | stop_after_trap = 1; | |
ae123ec6 | 1596 | wait_for_inferior (0); |
2020b7ab PA |
1597 | tp = inferior_thread (); |
1598 | if (tp->stop_signal != TARGET_SIGNAL_TRAP) | |
1599 | resume (0, tp->stop_signal); | |
9d3789f7 CF |
1600 | else |
1601 | break; | |
1602 | } | |
eff8332b | 1603 | |
d6b48e9c | 1604 | inf->stop_soon = NO_STOP_QUIETLY; |
9d3789f7 CF |
1605 | stop_after_trap = 0; |
1606 | return; | |
1607 | } | |
1608 | ||
616a9dc4 CV |
1609 | /* Try to set or remove a user privilege to the current process. Return -1 |
1610 | if that fails, the previous setting of that privilege otherwise. | |
1611 | ||
1612 | This code is copied from the Cygwin source code and rearranged to allow | |
1613 | dynamically loading of the needed symbols from advapi32 which is only | |
1614 | available on NT/2K/XP. */ | |
1615 | static int | |
1616 | set_process_privilege (const char *privilege, BOOL enable) | |
1617 | { | |
616a9dc4 CV |
1618 | HANDLE token_hdl = NULL; |
1619 | LUID restore_priv; | |
1620 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1621 | int ret = -1; | |
1622 | DWORD size; | |
1623 | ||
616a9dc4 CV |
1624 | if (!OpenProcessToken (GetCurrentProcess (), |
1625 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1626 | &token_hdl)) | |
1627 | goto out; | |
1628 | ||
418c6cb3 | 1629 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1630 | goto out; |
1631 | ||
1632 | new_priv.PrivilegeCount = 1; | |
1633 | new_priv.Privileges[0].Luid = restore_priv; | |
1634 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1635 | ||
1636 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1637 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1638 | goto out; |
1639 | #if 0 | |
1640 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1641 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
dc05df57 | 1642 | windows_attach(). */ |
616a9dc4 CV |
1643 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
1644 | be enabled. GetLastError () returns an correct error code, though. */ | |
1645 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) | |
1646 | goto out; | |
1647 | #endif | |
1648 | ||
1649 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1650 | ||
1651 | out: | |
1652 | if (token_hdl) | |
1653 | CloseHandle (token_hdl); | |
1654 | ||
1655 | return ret; | |
1656 | } | |
1657 | ||
02cc9f49 | 1658 | /* Attach to process PID, then initialize for debugging it. */ |
24e60978 | 1659 | static void |
dc05df57 | 1660 | windows_attach (struct target_ops *ops, char *args, int from_tty) |
24e60978 SC |
1661 | { |
1662 | BOOL ok; | |
559e75c0 | 1663 | DWORD pid; |
24e60978 SC |
1664 | |
1665 | if (!args) | |
e2e0b3e5 | 1666 | error_no_arg (_("process-id to attach")); |
24e60978 | 1667 | |
616a9dc4 CV |
1668 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1669 | { | |
1670 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
1671 | printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n"); | |
1672 | } | |
1673 | ||
baa93fa6 CF |
1674 | pid = strtoul (args, 0, 0); /* Windows pid */ |
1675 | ||
dc05df57 | 1676 | windows_init_thread_list (); |
9d3789f7 | 1677 | ok = DebugActiveProcess (pid); |
91a175b3 | 1678 | saw_create = 0; |
24e60978 | 1679 | |
10325bc5 | 1680 | #ifdef __CYGWIN__ |
24e60978 | 1681 | if (!ok) |
baa93fa6 CF |
1682 | { |
1683 | /* Try fall back to Cygwin pid */ | |
1684 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); | |
1685 | ||
1686 | if (pid > 0) | |
1687 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
1688 | } |
1689 | #endif | |
baa93fa6 | 1690 | |
10325bc5 PA |
1691 | if (!ok) |
1692 | error (_("Can't attach to process.")); | |
24e60978 | 1693 | |
2b008701 | 1694 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 1695 | |
24e60978 SC |
1696 | if (from_tty) |
1697 | { | |
1698 | char *exec_file = (char *) get_exec_file (0); | |
1699 | ||
1700 | if (exec_file) | |
1701 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1702 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1703 | else |
1704 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1705 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1706 | |
1707 | gdb_flush (gdb_stdout); | |
1708 | } | |
1709 | ||
dc05df57 | 1710 | do_initial_windows_stuff (ops, pid, 1); |
9d3789f7 | 1711 | target_terminal_ours (); |
24e60978 SC |
1712 | } |
1713 | ||
24e60978 | 1714 | static void |
dc05df57 | 1715 | windows_detach (struct target_ops *ops, char *args, int from_tty) |
24e60978 | 1716 | { |
02cc9f49 CV |
1717 | int detached = 1; |
1718 | ||
2b008701 CF |
1719 | ptid_t ptid = {-1}; |
1720 | windows_resume (ops, ptid, 0, TARGET_SIGNAL_0); | |
96998ce7 | 1721 | |
2b008701 CF |
1722 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
1723 | { | |
1724 | error (_("Can't detach process %lu (error %lu)"), | |
1725 | current_event.dwProcessId, GetLastError ()); | |
1726 | detached = 0; | |
02cc9f49 | 1727 | } |
2b008701 CF |
1728 | DebugSetProcessKillOnExit (FALSE); |
1729 | ||
02cc9f49 | 1730 | if (detached && from_tty) |
24e60978 SC |
1731 | { |
1732 | char *exec_file = get_exec_file (0); | |
1733 | if (exec_file == 0) | |
1734 | exec_file = ""; | |
02cc9f49 CV |
1735 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1736 | current_event.dwProcessId); | |
24e60978 SC |
1737 | gdb_flush (gdb_stdout); |
1738 | } | |
7f9f62ba | 1739 | |
39f77062 | 1740 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1741 | detach_inferior (current_event.dwProcessId); |
1742 | ||
0795be10 | 1743 | unpush_target (ops); |
24e60978 SC |
1744 | } |
1745 | ||
3ee6f623 | 1746 | static char * |
dc05df57 | 1747 | windows_pid_to_exec_file (int pid) |
47216e51 | 1748 | { |
47216e51 | 1749 | static char path[MAX_PATH + 1]; |
10325bc5 PA |
1750 | |
1751 | #ifdef __CYGWIN__ | |
33605d39 CF |
1752 | /* Try to find exe name as symlink target of /proc/<pid>/exe */ |
1753 | int nchars; | |
1754 | char procexe[sizeof ("/proc/4294967295/exe")]; | |
2dc38344 | 1755 | sprintf (procexe, "/proc/%u/exe", pid); |
33605d39 CF |
1756 | nchars = readlink (procexe, path, sizeof(path)); |
1757 | if (nchars > 0 && nchars < sizeof (path)) | |
47216e51 | 1758 | { |
33605d39 CF |
1759 | path[nchars] = '\0'; /* Got it */ |
1760 | return path; | |
47216e51 | 1761 | } |
10325bc5 PA |
1762 | #endif |
1763 | ||
33605d39 CF |
1764 | /* If we get here then either Cygwin is hosed, this isn't a Cygwin version |
1765 | of gdb, or we're trying to debug a non-Cygwin windows executable. */ | |
1766 | if (!get_module_name (0, path)) | |
1767 | path[0] = '\0'; | |
1768 | ||
1769 | return path; | |
47216e51 CV |
1770 | } |
1771 | ||
24e60978 SC |
1772 | /* Print status information about what we're accessing. */ |
1773 | ||
1774 | static void | |
dc05df57 | 1775 | windows_files_info (struct target_ops *ignore) |
24e60978 | 1776 | { |
181e7f93 PA |
1777 | struct inferior *inf = current_inferior (); |
1778 | ||
24e60978 | 1779 | printf_unfiltered ("\tUsing the running image of %s %s.\n", |
181e7f93 PA |
1780 | inf->attach_flag ? "attached" : "child", |
1781 | target_pid_to_str (inferior_ptid)); | |
24e60978 SC |
1782 | } |
1783 | ||
24e60978 | 1784 | static void |
dc05df57 | 1785 | windows_open (char *arg, int from_tty) |
24e60978 | 1786 | { |
8a3fe4f8 | 1787 | error (_("Use the \"run\" command to start a Unix child process.")); |
24e60978 SC |
1788 | } |
1789 | ||
dc05df57 | 1790 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
1791 | EXEC_FILE is the file to run. |
1792 | ALLARGS is a string containing the arguments to the program. | |
1793 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1794 | ||
24e60978 | 1795 | static void |
dc05df57 | 1796 | windows_create_inferior (struct target_ops *ops, char *exec_file, |
136d6dae | 1797 | char *allargs, char **in_env, int from_tty) |
24e60978 | 1798 | { |
24e60978 SC |
1799 | STARTUPINFO si; |
1800 | PROCESS_INFORMATION pi; | |
24e60978 SC |
1801 | BOOL ret; |
1802 | DWORD flags; | |
eb708f2e | 1803 | char *args; |
dfe7f3ac CF |
1804 | char real_path[MAXPATHLEN]; |
1805 | char *toexec; | |
349b409f CF |
1806 | char shell[MAX_PATH + 1]; /* Path to shell */ |
1807 | const char *sh; | |
41b4aadc | 1808 | #ifdef __CYGWIN__ |
2becadee CF |
1809 | int tty; |
1810 | int ostdin, ostdout, ostderr; | |
41b4aadc CF |
1811 | #else |
1812 | HANDLE tty; | |
1813 | #endif | |
3cb3b8df | 1814 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
24e60978 SC |
1815 | |
1816 | if (!exec_file) | |
8a3fe4f8 | 1817 | error (_("No executable specified, use `target exec'.")); |
24e60978 SC |
1818 | |
1819 | memset (&si, 0, sizeof (si)); | |
1820 | si.cb = sizeof (si); | |
1821 | ||
10325bc5 | 1822 | #ifdef __CYGWIN__ |
349b409f | 1823 | if (!useshell) |
dfe7f3ac CF |
1824 | { |
1825 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1826 | cygwin_conv_to_win32_path (exec_file, real_path); | |
1827 | toexec = real_path; | |
1828 | } | |
1829 | else | |
1830 | { | |
349b409f CF |
1831 | char *newallargs; |
1832 | sh = getenv ("SHELL"); | |
1833 | if (!sh) | |
1834 | sh = "/bin/sh"; | |
1835 | cygwin_conv_to_win32_path (sh, shell); | |
1836 | newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file) | |
1837 | + strlen (allargs) + 2); | |
dfe7f3ac CF |
1838 | sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs); |
1839 | allargs = newallargs; | |
1840 | toexec = shell; | |
1841 | flags = DEBUG_PROCESS; | |
1842 | } | |
10325bc5 PA |
1843 | #else |
1844 | toexec = exec_file; | |
1845 | flags = DEBUG_ONLY_THIS_PROCESS; | |
1846 | #endif | |
eb708f2e | 1847 | |
eeb25b8a PM |
1848 | if (new_group) |
1849 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1850 | ||
1851 | if (new_console) | |
1852 | flags |= CREATE_NEW_CONSOLE; | |
1853 | ||
dfe7f3ac CF |
1854 | args = alloca (strlen (toexec) + strlen (allargs) + 2); |
1855 | strcpy (args, toexec); | |
eb708f2e SC |
1856 | strcat (args, " "); |
1857 | strcat (args, allargs); | |
1858 | ||
10325bc5 | 1859 | #ifdef __CYGWIN__ |
e88c49c3 | 1860 | /* Prepare the environment vars for CreateProcess. */ |
002c07a9 | 1861 | cygwin_internal (CW_SYNC_WINENV); |
1750a5ef | 1862 | |
2becadee CF |
1863 | if (!inferior_io_terminal) |
1864 | tty = ostdin = ostdout = ostderr = -1; | |
1865 | else | |
1866 | { | |
1867 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
1868 | if (tty < 0) | |
1869 | { | |
1870 | print_sys_errmsg (inferior_io_terminal, errno); | |
1871 | ostdin = ostdout = ostderr = -1; | |
1872 | } | |
1873 | else | |
1874 | { | |
1875 | ostdin = dup (0); | |
1876 | ostdout = dup (1); | |
1877 | ostderr = dup (2); | |
1878 | dup2 (tty, 0); | |
1879 | dup2 (tty, 1); | |
1880 | dup2 (tty, 2); | |
1881 | } | |
1882 | } | |
41b4aadc CF |
1883 | #else |
1884 | if (!inferior_io_terminal) | |
1885 | tty = INVALID_HANDLE_VALUE; | |
1886 | else | |
1887 | { | |
1888 | SECURITY_ATTRIBUTES sa; | |
1889 | sa.nLength = sizeof(sa); | |
1890 | sa.lpSecurityDescriptor = 0; | |
1891 | sa.bInheritHandle = TRUE; | |
1892 | tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE, | |
1893 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
1894 | if (tty == INVALID_HANDLE_VALUE) | |
1895 | warning (_("Warning: Failed to open TTY %s, error %#x."), | |
1896 | inferior_io_terminal, (unsigned) GetLastError ()); | |
1897 | else | |
1898 | { | |
1899 | si.hStdInput = tty; | |
1900 | si.hStdOutput = tty; | |
1901 | si.hStdError = tty; | |
1902 | si.dwFlags |= STARTF_USESTDHANDLES; | |
1903 | } | |
1904 | } | |
10325bc5 | 1905 | #endif |
2becadee | 1906 | |
dc05df57 | 1907 | windows_init_thread_list (); |
1750a5ef | 1908 | ret = CreateProcess (0, |
3a4b77d8 | 1909 | args, /* command line */ |
24e60978 SC |
1910 | NULL, /* Security */ |
1911 | NULL, /* thread */ | |
1912 | TRUE, /* inherit handles */ | |
1913 | flags, /* start flags */ | |
002c07a9 | 1914 | NULL, /* environment */ |
24e60978 SC |
1915 | NULL, /* current directory */ |
1916 | &si, | |
1917 | &pi); | |
10325bc5 PA |
1918 | |
1919 | #ifdef __CYGWIN__ | |
2becadee CF |
1920 | if (tty >= 0) |
1921 | { | |
1922 | close (tty); | |
1923 | dup2 (ostdin, 0); | |
1924 | dup2 (ostdout, 1); | |
1925 | dup2 (ostderr, 2); | |
1926 | close (ostdin); | |
1927 | close (ostdout); | |
1928 | close (ostderr); | |
1929 | } | |
41b4aadc CF |
1930 | #else |
1931 | if (tty != INVALID_HANDLE_VALUE) | |
1932 | CloseHandle (tty); | |
10325bc5 | 1933 | #endif |
2becadee | 1934 | |
24e60978 | 1935 | if (!ret) |
8a3fe4f8 AC |
1936 | error (_("Error creating process %s, (error %d)."), |
1937 | exec_file, (unsigned) GetLastError ()); | |
24e60978 | 1938 | |
c1766e7d PM |
1939 | CloseHandle (pi.hThread); |
1940 | CloseHandle (pi.hProcess); | |
1941 | ||
dfe7f3ac CF |
1942 | if (useshell && shell[0] != '\0') |
1943 | saw_create = -1; | |
1944 | else | |
1945 | saw_create = 0; | |
1946 | ||
dc05df57 | 1947 | do_initial_windows_stuff (ops, pi.dwProcessId, 0); |
d3a09475 | 1948 | |
dc05df57 | 1949 | /* windows_continue (DBG_CONTINUE, -1); */ |
24e60978 SC |
1950 | } |
1951 | ||
1952 | static void | |
dc05df57 | 1953 | windows_mourn_inferior (struct target_ops *ops) |
24e60978 | 1954 | { |
dc05df57 | 1955 | (void) windows_continue (DBG_CONTINUE, -1); |
fa4ba8da | 1956 | i386_cleanup_dregs(); |
bf25528d CF |
1957 | if (open_process_used) |
1958 | { | |
1959 | CHECK (CloseHandle (current_process_handle)); | |
1960 | open_process_used = 0; | |
1961 | } | |
0795be10 | 1962 | unpush_target (ops); |
24e60978 SC |
1963 | generic_mourn_inferior (); |
1964 | } | |
1965 | ||
24e60978 SC |
1966 | /* Send a SIGINT to the process group. This acts just like the user typed a |
1967 | ^C on the controlling terminal. */ | |
1968 | ||
b607efe7 | 1969 | static void |
dc05df57 | 1970 | windows_stop (ptid_t ptid) |
24e60978 | 1971 | { |
1ef980b9 | 1972 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 1973 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 1974 | registers_changed (); /* refresh register state */ |
24e60978 SC |
1975 | } |
1976 | ||
3ee6f623 | 1977 | static int |
dc05df57 | 1978 | windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len, |
0a65a603 AC |
1979 | int write, struct mem_attrib *mem, |
1980 | struct target_ops *target) | |
24e60978 | 1981 | { |
5732a500 | 1982 | SIZE_T done = 0; |
24e60978 SC |
1983 | if (write) |
1984 | { | |
29fe111d | 1985 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
2c647436 | 1986 | len, (DWORD) (uintptr_t) memaddr)); |
2b008701 | 1987 | if (!WriteProcessMemory (current_process_handle, |
2c647436 | 1988 | (LPVOID) (uintptr_t) memaddr, our, |
6f17862b CF |
1989 | len, &done)) |
1990 | done = 0; | |
2b008701 | 1991 | FlushInstructionCache (current_process_handle, |
2c647436 | 1992 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
1993 | } |
1994 | else | |
1995 | { | |
29fe111d | 1996 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
2c647436 | 1997 | len, (DWORD) (uintptr_t) memaddr)); |
2b008701 | 1998 | if (!ReadProcessMemory (current_process_handle, |
2c647436 | 1999 | (LPCVOID) (uintptr_t) memaddr, our, |
6f17862b CF |
2000 | len, &done)) |
2001 | done = 0; | |
24e60978 SC |
2002 | } |
2003 | return done; | |
2004 | } | |
2005 | ||
3ee6f623 | 2006 | static void |
7d85a9c0 | 2007 | windows_kill_inferior (struct target_ops *ops) |
24e60978 | 2008 | { |
3cee93ac CF |
2009 | CHECK (TerminateProcess (current_process_handle, 0)); |
2010 | ||
b5edcb45 ILT |
2011 | for (;;) |
2012 | { | |
dc05df57 | 2013 | if (!windows_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 2014 | break; |
3cee93ac | 2015 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 2016 | break; |
3cee93ac | 2017 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
2018 | break; |
2019 | } | |
2020 | ||
dc05df57 | 2021 | target_mourn_inferior (); /* or just windows_mourn_inferior? */ |
24e60978 SC |
2022 | } |
2023 | ||
24e60978 | 2024 | static void |
dc05df57 | 2025 | windows_prepare_to_store (struct regcache *regcache) |
24e60978 SC |
2026 | { |
2027 | /* Do nothing, since we can store individual regs */ | |
2028 | } | |
2029 | ||
2030 | static int | |
dc05df57 | 2031 | windows_can_run (void) |
24e60978 SC |
2032 | { |
2033 | return 1; | |
2034 | } | |
2035 | ||
2036 | static void | |
dc05df57 | 2037 | windows_close (int x) |
24e60978 | 2038 | { |
dc05df57 | 2039 | DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n", |
3bccec63 | 2040 | PIDGET (inferior_ptid))); |
24e60978 | 2041 | } |
1ef980b9 | 2042 | |
3ee6f623 CF |
2043 | /* Convert pid to printable format. */ |
2044 | static char * | |
117de6a9 | 2045 | windows_pid_to_str (struct target_ops *ops, ptid_t ptid) |
24e60978 | 2046 | { |
3ee6f623 | 2047 | static char buf[80]; |
3ee6f623 | 2048 | |
2dc38344 PA |
2049 | if (ptid_get_tid (ptid) != 0) |
2050 | { | |
2051 | snprintf (buf, sizeof (buf), "Thread %d.0x%lx", | |
2052 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
2053 | return buf; | |
2054 | } | |
2055 | ||
2056 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2057 | } |
2058 | ||
de1b3c3d | 2059 | static LONGEST |
dc05df57 | 2060 | windows_xfer_shared_libraries (struct target_ops *ops, |
de1b3c3d PA |
2061 | enum target_object object, const char *annex, |
2062 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2063 | ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2064 | { |
de1b3c3d PA |
2065 | struct obstack obstack; |
2066 | const char *buf; | |
2067 | LONGEST len_avail; | |
3cb8e7f6 | 2068 | struct so_list *so; |
3cb8e7f6 | 2069 | |
de1b3c3d PA |
2070 | if (writebuf) |
2071 | return -1; | |
3cb8e7f6 | 2072 | |
de1b3c3d PA |
2073 | obstack_init (&obstack); |
2074 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2075 | for (so = solib_start.next; so; so = so->next) | |
dc05df57 CF |
2076 | windows_xfer_shared_library (so->so_name, (CORE_ADDR) (uintptr_t) so->lm_info->load_addr, |
2077 | &obstack); | |
de1b3c3d | 2078 | obstack_grow_str0 (&obstack, "</library-list>\n"); |
3cb8e7f6 | 2079 | |
de1b3c3d PA |
2080 | buf = obstack_finish (&obstack); |
2081 | len_avail = strlen (buf); | |
2082 | if (offset >= len_avail) | |
2083 | return 0; | |
3cb8e7f6 | 2084 | |
de1b3c3d PA |
2085 | if (len > len_avail - offset) |
2086 | len = len_avail - offset; | |
2087 | memcpy (readbuf, buf + offset, len); | |
3cb8e7f6 | 2088 | |
de1b3c3d PA |
2089 | obstack_free (&obstack, NULL); |
2090 | return len; | |
3cb8e7f6 CF |
2091 | } |
2092 | ||
de1b3c3d | 2093 | static LONGEST |
dc05df57 | 2094 | windows_xfer_partial (struct target_ops *ops, enum target_object object, |
de1b3c3d PA |
2095 | const char *annex, gdb_byte *readbuf, |
2096 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2097 | { |
de1b3c3d | 2098 | switch (object) |
3cb8e7f6 | 2099 | { |
de1b3c3d PA |
2100 | case TARGET_OBJECT_MEMORY: |
2101 | if (readbuf) | |
2102 | return (*ops->deprecated_xfer_memory) (offset, readbuf, | |
244e85c8 | 2103 | len, 0/*read*/, NULL, ops); |
de1b3c3d PA |
2104 | if (writebuf) |
2105 | return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf, | |
2106 | len, 1/*write*/, NULL, ops); | |
2107 | return -1; | |
2108 | ||
2109 | case TARGET_OBJECT_LIBRARIES: | |
dc05df57 | 2110 | return windows_xfer_shared_libraries (ops, object, annex, readbuf, |
de1b3c3d | 2111 | writebuf, offset, len); |
3929abe9 | 2112 | |
de1b3c3d PA |
2113 | default: |
2114 | if (ops->beneath != NULL) | |
2115 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
2116 | readbuf, writebuf, offset, len); | |
2117 | return -1; | |
3929abe9 | 2118 | } |
02c5aecd CF |
2119 | } |
2120 | ||
1e2f1c5c JB |
2121 | static ptid_t |
2122 | windows_get_ada_task_ptid (long lwp, long thread) | |
2123 | { | |
2124 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2125 | } | |
2126 | ||
3ee6f623 | 2127 | static void |
dc05df57 | 2128 | init_windows_ops (void) |
3ee6f623 | 2129 | { |
dc05df57 CF |
2130 | windows_ops.to_shortname = "child"; |
2131 | windows_ops.to_longname = "Win32 child process"; | |
2132 | windows_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
2133 | windows_ops.to_open = windows_open; | |
2134 | windows_ops.to_close = windows_close; | |
2135 | windows_ops.to_attach = windows_attach; | |
2136 | windows_ops.to_attach_no_wait = 1; | |
2137 | windows_ops.to_detach = windows_detach; | |
2138 | windows_ops.to_resume = windows_resume; | |
2139 | windows_ops.to_wait = windows_wait; | |
2140 | windows_ops.to_fetch_registers = windows_fetch_inferior_registers; | |
2141 | windows_ops.to_store_registers = windows_store_inferior_registers; | |
2142 | windows_ops.to_prepare_to_store = windows_prepare_to_store; | |
2143 | windows_ops.deprecated_xfer_memory = windows_xfer_memory; | |
2144 | windows_ops.to_xfer_partial = windows_xfer_partial; | |
2145 | windows_ops.to_files_info = windows_files_info; | |
2146 | windows_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
2147 | windows_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
2148 | windows_ops.to_terminal_init = terminal_init_inferior; | |
2149 | windows_ops.to_terminal_inferior = terminal_inferior; | |
2150 | windows_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
2151 | windows_ops.to_terminal_ours = terminal_ours; | |
2152 | windows_ops.to_terminal_save_ours = terminal_save_ours; | |
2153 | windows_ops.to_terminal_info = child_terminal_info; | |
2154 | windows_ops.to_kill = windows_kill_inferior; | |
2155 | windows_ops.to_create_inferior = windows_create_inferior; | |
2156 | windows_ops.to_mourn_inferior = windows_mourn_inferior; | |
2157 | windows_ops.to_can_run = windows_can_run; | |
2158 | windows_ops.to_thread_alive = windows_thread_alive; | |
2159 | windows_ops.to_pid_to_str = windows_pid_to_str; | |
2160 | windows_ops.to_stop = windows_stop; | |
2161 | windows_ops.to_stratum = process_stratum; | |
2162 | windows_ops.to_has_all_memory = 1; | |
2163 | windows_ops.to_has_memory = 1; | |
2164 | windows_ops.to_has_stack = 1; | |
2165 | windows_ops.to_has_registers = 1; | |
2166 | windows_ops.to_has_execution = 1; | |
2167 | windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file; | |
1e2f1c5c | 2168 | windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid; |
5aca5a82 PM |
2169 | i386_use_watchpoints (&windows_ops); |
2170 | ||
dc05df57 | 2171 | windows_ops.to_magic = OPS_MAGIC; |
c719b714 | 2172 | } |
24e60978 | 2173 | |
3929abe9 | 2174 | static void |
dc05df57 | 2175 | set_windows_aliases (char *argv0) |
3929abe9 CF |
2176 | { |
2177 | add_info_alias ("dll", "sharedlibrary", 1); | |
2178 | } | |
2179 | ||
24e60978 | 2180 | void |
dc05df57 | 2181 | _initialize_windows_nat (void) |
24e60978 | 2182 | { |
fa58ee11 EZ |
2183 | struct cmd_list_element *c; |
2184 | ||
dc05df57 | 2185 | init_windows_ops (); |
1ef980b9 | 2186 | |
fa58ee11 | 2187 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1bedd215 | 2188 | _("Load dll library symbols from FILE.")); |
5ba2abeb | 2189 | set_cmd_completer (c, filename_completer); |
450005e7 CF |
2190 | |
2191 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
2192 | ||
10325bc5 | 2193 | #ifdef __CYGWIN__ |
5bf193a2 AC |
2194 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
2195 | Set use of shell to start subprocess."), _("\ | |
2196 | Show use of shell to start subprocess."), NULL, | |
2197 | NULL, | |
2198 | NULL, /* FIXME: i18n: */ | |
2199 | &setlist, &showlist); | |
2200 | ||
09280ddf CF |
2201 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\ |
2202 | Break when an exception is detected in the Cygwin DLL itself."), _("\ | |
2203 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
2204 | NULL, | |
2205 | NULL, /* FIXME: i18n: */ | |
2206 | &setlist, &showlist); | |
10325bc5 | 2207 | #endif |
09280ddf | 2208 | |
5bf193a2 AC |
2209 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
2210 | Set creation of new console when creating child process."), _("\ | |
2211 | Show creation of new console when creating child process."), NULL, | |
2212 | NULL, | |
2213 | NULL, /* FIXME: i18n: */ | |
2214 | &setlist, &showlist); | |
2215 | ||
2216 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
2217 | Set creation of new group when creating child process."), _("\ | |
2218 | Show creation of new group when creating child process."), NULL, | |
2219 | NULL, | |
2220 | NULL, /* FIXME: i18n: */ | |
2221 | &setlist, &showlist); | |
2222 | ||
2223 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
2224 | Set whether to display execution in child process."), _("\ | |
2225 | Show whether to display execution in child process."), NULL, | |
2226 | NULL, | |
2227 | NULL, /* FIXME: i18n: */ | |
2228 | &setlist, &showlist); | |
2229 | ||
2230 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
2231 | Set whether to display kernel events in child process."), _("\ | |
2232 | Show whether to display kernel events in child process."), NULL, | |
2233 | NULL, | |
2234 | NULL, /* FIXME: i18n: */ | |
2235 | &setlist, &showlist); | |
2236 | ||
2237 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
2238 | Set whether to display memory accesses in child process."), _("\ | |
2239 | Show whether to display memory accesses in child process."), NULL, | |
2240 | NULL, | |
2241 | NULL, /* FIXME: i18n: */ | |
2242 | &setlist, &showlist); | |
2243 | ||
2244 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
2245 | &debug_exceptions, _("\ | |
2246 | Set whether to display kernel exceptions in child process."), _("\ | |
2247 | Show whether to display kernel exceptions in child process."), NULL, | |
2248 | NULL, | |
2249 | NULL, /* FIXME: i18n: */ | |
2250 | &setlist, &showlist); | |
1ef980b9 | 2251 | |
c1748f97 | 2252 | add_prefix_cmd ("w32", class_info, info_w32_command, |
1bedd215 | 2253 | _("Print information specific to Win32 debugging."), |
baa93fa6 | 2254 | &info_w32_cmdlist, "info w32 ", 0, &infolist); |
c1748f97 PM |
2255 | |
2256 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 2257 | _("Display selectors infos."), |
c1748f97 | 2258 | &info_w32_cmdlist); |
dc05df57 CF |
2259 | add_target (&windows_ops); |
2260 | deprecated_init_ui_hook = set_windows_aliases; | |
24e60978 | 2261 | } |
3cee93ac | 2262 | |
fa4ba8da PM |
2263 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
2264 | ||
2265 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
2266 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 2267 | actually set up when windows_continue is called. */ |
fa4ba8da PM |
2268 | void |
2269 | cygwin_set_dr (int i, CORE_ADDR addr) | |
2270 | { | |
2271 | if (i < 0 || i > 3) | |
2272 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2273 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
41b4aadc | 2274 | dr[i] = addr; |
fa4ba8da PM |
2275 | debug_registers_changed = 1; |
2276 | debug_registers_used = 1; | |
2277 | } | |
2278 | ||
2279 | /* Pass the value VAL to the inferior in the DR7 debug control | |
2280 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 2281 | will be actually set up in windows_wait. */ |
fa4ba8da PM |
2282 | void |
2283 | cygwin_set_dr7 (unsigned val) | |
2284 | { | |
2285 | dr[7] = val; | |
2286 | debug_registers_changed = 1; | |
2287 | debug_registers_used = 1; | |
2288 | } | |
2289 | ||
2290 | /* Get the value of the DR6 debug status register from the inferior. | |
2291 | Here we just return the value stored in dr[6] | |
2292 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
2293 | unsigned | |
2294 | cygwin_get_dr6 (void) | |
2295 | { | |
2296 | return dr[6]; | |
2297 | } | |
2298 | ||
2dc38344 | 2299 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 2300 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
2dc38344 | 2301 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
3cee93ac | 2302 | static int |
28439f5e | 2303 | windows_thread_alive (struct target_ops *ops, ptid_t ptid) |
3cee93ac | 2304 | { |
2dc38344 PA |
2305 | int tid; |
2306 | ||
2307 | gdb_assert (ptid_get_tid (ptid) != 0); | |
2308 | tid = ptid_get_tid (ptid); | |
39f77062 | 2309 | |
2dc38344 | 2310 | return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
3a4b77d8 | 2311 | FALSE : TRUE; |
3cee93ac CF |
2312 | } |
2313 | ||
2a3d5645 CF |
2314 | void |
2315 | _initialize_check_for_gdb_ini (void) | |
2316 | { | |
2317 | char *homedir; | |
2318 | if (inhibit_gdbinit) | |
2319 | return; | |
2320 | ||
2321 | homedir = getenv ("HOME"); | |
2322 | if (homedir) | |
2323 | { | |
2324 | char *p; | |
2325 | char *oldini = (char *) alloca (strlen (homedir) + | |
2326 | sizeof ("/gdb.ini")); | |
2327 | strcpy (oldini, homedir); | |
2328 | p = strchr (oldini, '\0'); | |
2329 | if (p > oldini && p[-1] != '/') | |
2330 | *p++ = '/'; | |
2331 | strcpy (p, "gdb.ini"); | |
2332 | if (access (oldini, 0) == 0) | |
2333 | { | |
2334 | int len = strlen (oldini); | |
2335 | char *newini = alloca (len + 1); | |
dfe7f3ac | 2336 | sprintf (newini, "%.*s.gdbinit", |
58fa08f0 | 2337 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 2338 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
2339 | } |
2340 | } | |
2341 | } | |
33605d39 | 2342 | |
2b008701 CF |
2343 | /* Define dummy functions which always return error for the rare cases where |
2344 | these functions could not be found. */ | |
2345 | static BOOL WINAPI | |
2346 | bad_DebugActiveProcessStop (DWORD w) | |
2347 | { | |
2348 | return FALSE; | |
2349 | } | |
2350 | static BOOL WINAPI | |
2351 | bad_DebugBreakProcess (HANDLE w) | |
2352 | { | |
2353 | return FALSE; | |
2354 | } | |
2355 | static BOOL WINAPI | |
2356 | bad_DebugSetProcessKillOnExit (BOOL w) | |
2357 | { | |
2358 | return FALSE; | |
2359 | } | |
2360 | static BOOL WINAPI | |
2361 | bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z) | |
2362 | { | |
2363 | return FALSE; | |
2364 | } | |
2365 | static DWORD WINAPI | |
2366 | bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z) | |
2367 | { | |
2368 | return 0; | |
2369 | } | |
2370 | static BOOL WINAPI | |
2371 | bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z) | |
2372 | { | |
2373 | return FALSE; | |
2374 | } | |
2375 | ||
418c6cb3 CF |
2376 | static BOOL WINAPI |
2377 | bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y) | |
2378 | { | |
2379 | return FALSE; | |
2380 | } | |
2381 | ||
2b008701 CF |
2382 | /* Load any functions which may not be available in ancient versions |
2383 | of Windows. */ | |
33605d39 | 2384 | void |
2b008701 | 2385 | _initialize_loadable (void) |
33605d39 | 2386 | { |
2b008701 CF |
2387 | HMODULE hm = NULL; |
2388 | ||
2389 | hm = LoadLibrary ("kernel32.dll"); | |
2390 | if (hm) | |
33605d39 | 2391 | { |
2b008701 CF |
2392 | dyn_DebugActiveProcessStop = (void *) |
2393 | GetProcAddress (hm, "DebugActiveProcessStop"); | |
2394 | dyn_DebugBreakProcess = (void *) | |
2395 | GetProcAddress (hm, "DebugBreakProcess"); | |
2396 | dyn_DebugSetProcessKillOnExit = (void *) | |
2397 | GetProcAddress (hm, "DebugSetProcessKillOnExit"); | |
2398 | } | |
33605d39 | 2399 | |
2b008701 CF |
2400 | /* Set variables to dummy versions of these processes if the function |
2401 | wasn't found in kernel32.dll. */ | |
2402 | if (!dyn_DebugBreakProcess) | |
2403 | dyn_DebugBreakProcess = bad_DebugBreakProcess; | |
2404 | if (!dyn_DebugActiveProcessStop || !dyn_DebugSetProcessKillOnExit) | |
2405 | { | |
2406 | dyn_DebugActiveProcessStop = bad_DebugActiveProcessStop; | |
2407 | dyn_DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit; | |
2408 | } | |
33605d39 | 2409 | |
2b008701 CF |
2410 | /* Load optional functions used for retrieving filename information |
2411 | associated with the currently debugged process or its dlls. */ | |
2412 | hm = LoadLibrary ("psapi.dll"); | |
2413 | if (hm) | |
2414 | { | |
2415 | dyn_EnumProcessModules = (void *) | |
2416 | GetProcAddress (hm, "EnumProcessModules"); | |
2417 | dyn_GetModuleInformation = (void *) | |
2418 | GetProcAddress (hm, "GetModuleInformation"); | |
2419 | dyn_GetModuleFileNameExA = (void *) | |
2420 | GetProcAddress (hm, "GetModuleFileNameExA"); | |
33605d39 CF |
2421 | } |
2422 | ||
2b008701 CF |
2423 | if (!dyn_EnumProcessModules || !dyn_GetModuleInformation || !dyn_GetModuleFileNameExA) |
2424 | { | |
2425 | /* Set variables to dummy versions of these processes if the function | |
2426 | wasn't found in psapi.dll. */ | |
2427 | dyn_EnumProcessModules = bad_EnumProcessModules; | |
2428 | dyn_GetModuleInformation = bad_GetModuleInformation; | |
2429 | dyn_GetModuleFileNameExA = bad_GetModuleFileNameExA; | |
2430 | /* This will probably fail on Windows 9x/Me. Let the user know that we're | |
2431 | missing some functionality. */ | |
418c6cb3 CF |
2432 | warning(_("cannot automatically find executable file or library to read symbols.\nUse \"file\" or \"dll\" command to load executable/libraries directly.")); |
2433 | } | |
2434 | ||
2435 | hm = LoadLibrary ("advapi32.dll"); | |
2436 | if (hm) | |
2437 | { | |
2438 | dyn_OpenProcessToken = (void *) | |
2439 | GetProcAddress (hm, "OpenProcessToken"); | |
2440 | dyn_LookupPrivilegeValueA = (void *) | |
2441 | GetProcAddress (hm, "LookupPrivilegeValueA"); | |
2442 | dyn_AdjustTokenPrivileges = (void *) | |
2443 | GetProcAddress (hm, "AdjustTokenPrivileges"); | |
2444 | /* Only need to set one of these since if OpenProcessToken fails nothing | |
2445 | else is needed. */ | |
2446 | if (!dyn_OpenProcessToken || !dyn_LookupPrivilegeValueA || !dyn_AdjustTokenPrivileges) | |
2447 | dyn_OpenProcessToken = bad_OpenProcessToken; | |
2b008701 | 2448 | } |
33605d39 | 2449 | } |