Commit | Line | Data |
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dc05df57 | 1 | /* Target-vector operations for controlling windows child processes, for GDB. |
0a65a603 | 2 | |
281b533b | 3 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
4c38e0a4 | 4 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
0a65a603 | 5 | |
e6433c28 | 6 | Contributed by Cygnus Solutions, A Red Hat Company. |
e88c49c3 | 7 | |
24e60978 SC |
8 | This file is part of GDB. |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
24e60978 SC |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
a9762ec7 | 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
24e60978 SC |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
24e60978 | 22 | |
dfe7f3ac | 23 | /* Originally by Steve Chamberlain, sac@cygnus.com */ |
24e60978 SC |
24 | |
25 | #include "defs.h" | |
26 | #include "frame.h" /* required by inferior.h */ | |
27 | #include "inferior.h" | |
28 | #include "target.h" | |
60250e8b | 29 | #include "exceptions.h" |
24e60978 SC |
30 | #include "gdbcore.h" |
31 | #include "command.h" | |
fa58ee11 | 32 | #include "completer.h" |
4e052eda | 33 | #include "regcache.h" |
2a3d5645 | 34 | #include "top.h" |
403d9909 CF |
35 | #include <signal.h> |
36 | #include <sys/types.h> | |
37 | #include <fcntl.h> | |
38 | #include <stdlib.h> | |
39 | #include <windows.h> | |
40 | #include <imagehlp.h> | |
2b008701 | 41 | #include <psapi.h> |
10325bc5 | 42 | #ifdef __CYGWIN__ |
403d9909 | 43 | #include <sys/cygwin.h> |
b3c613f2 | 44 | #include <cygwin/version.h> |
10325bc5 | 45 | #endif |
a244bdca | 46 | #include <signal.h> |
cad9cd60 | 47 | |
24e60978 | 48 | #include "buildsym.h" |
1ef980b9 SC |
49 | #include "symfile.h" |
50 | #include "objfiles.h" | |
de1b3c3d | 51 | #include "gdb_obstack.h" |
24e60978 | 52 | #include "gdb_string.h" |
fdfa3315 | 53 | #include "gdbthread.h" |
24e60978 | 54 | #include "gdbcmd.h" |
1750a5ef | 55 | #include <sys/param.h> |
1e37c281 | 56 | #include <unistd.h> |
4646aa9d | 57 | #include "exec.h" |
3ee6f623 | 58 | #include "solist.h" |
3cb8e7f6 | 59 | #include "solib.h" |
de1b3c3d | 60 | #include "xml-support.h" |
24e60978 | 61 | |
6c7de422 MK |
62 | #include "i386-tdep.h" |
63 | #include "i387-tdep.h" | |
64 | ||
31b060a2 CF |
65 | #include "windows-tdep.h" |
66 | #include "windows-nat.h" | |
9bb9e8ad | 67 | #include "i386-nat.h" |
ecc13e53 | 68 | #include "complaints.h" |
de1b3c3d | 69 | |
418c6cb3 | 70 | #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges |
2b008701 CF |
71 | #define DebugActiveProcessStop dyn_DebugActiveProcessStop |
72 | #define DebugBreakProcess dyn_DebugBreakProcess | |
73 | #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit | |
74 | #define EnumProcessModules dyn_EnumProcessModules | |
2b008701 | 75 | #define GetModuleInformation dyn_GetModuleInformation |
418c6cb3 CF |
76 | #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA |
77 | #define OpenProcessToken dyn_OpenProcessToken | |
2b008701 | 78 | |
418c6cb3 CF |
79 | static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, |
80 | DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
2b008701 CF |
81 | static BOOL WINAPI (*DebugActiveProcessStop) (DWORD); |
82 | static BOOL WINAPI (*DebugBreakProcess) (HANDLE); | |
83 | static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL); | |
84 | static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD, | |
85 | LPDWORD); | |
2b008701 CF |
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 | |
b3c613f2 CF |
93 | #undef STARTUPINFO |
94 | #undef CreateProcess | |
95 | #undef GetModuleFileNameEx | |
96 | ||
97 | #ifndef __CYGWIN__ | |
98 | # define __PMAX (MAX_PATH + 1) | |
99 | static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD); | |
100 | # define STARTUPINFO STARTUPINFOA | |
101 | # define CreateProcess CreateProcessA | |
102 | # define GetModuleFileNameEx_name "GetModuleFileNameExA" | |
103 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA | |
104 | #else | |
105 | # define __PMAX PATH_MAX | |
a244bdca | 106 | /* The starting and ending address of the cygwin1.dll text segment. */ |
b3c613f2 CF |
107 | static CORE_ADDR cygwin_load_start; |
108 | static CORE_ADDR cygwin_load_end; | |
109 | # if CYGWIN_VERSION_DLL_MAKE_COMBINED(CYGWIN_VERSION_API_MAJOR,CYGWIN_VERSION_API_MINOR) >= 181 | |
110 | # define __USEWIDE | |
111 | typedef wchar_t cygwin_buf_t; | |
112 | static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPWSTR, DWORD); | |
113 | # define STARTUPINFO STARTUPINFOW | |
114 | # define CreateProcess CreateProcessW | |
115 | # define GetModuleFileNameEx_name "GetModuleFileNameExW" | |
116 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW | |
117 | # else | |
60c5c021 CF |
118 | # define CCP_POSIX_TO_WIN_W 1 |
119 | # define CCP_WIN_W_TO_POSIX 3 | |
120 | # define cygwin_conv_path(op, from, to, size) \ | |
121 | (op == CCP_WIN_W_TO_POSIX) ? \ | |
122 | cygwin_conv_to_full_posix_path (from, to) : \ | |
123 | cygwin_conv_to_win32_path (from, to) | |
b3c613f2 CF |
124 | typedef char cygwin_buf_t; |
125 | static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD); | |
126 | # define STARTUPINFO STARTUPINFOA | |
127 | # define CreateProcess CreateProcessA | |
128 | # define GetModuleFileNameEx_name "GetModuleFileNameExA" | |
129 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA | |
60c5c021 | 130 | # define CW_SET_DOS_FILE_WARNING -1 /* no-op this for older Cygwin */ |
b3c613f2 | 131 | # endif |
10325bc5 | 132 | #endif |
a244bdca CF |
133 | |
134 | static int have_saved_context; /* True if we've saved context from a cygwin signal. */ | |
135 | static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */ | |
136 | ||
0714f9bf SS |
137 | /* If we're not using the old Cygwin header file set, define the |
138 | following which never should have been in the generic Win32 API | |
139 | headers in the first place since they were our own invention... */ | |
140 | #ifndef _GNU_H_WINDOWS_H | |
9d3789f7 | 141 | enum |
8e860359 CF |
142 | { |
143 | FLAG_TRACE_BIT = 0x100, | |
144 | CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT) | |
145 | }; | |
0714f9bf SS |
146 | #endif |
147 | ||
5851ab76 JB |
148 | #ifndef CONTEXT_EXTENDED_REGISTERS |
149 | /* This macro is only defined on ia32. It only makes sense on this target, | |
150 | so define it as zero if not already defined. */ | |
151 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
152 | #endif | |
153 | ||
fa4ba8da PM |
154 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ |
155 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 156 | |
41b4aadc | 157 | static uintptr_t dr[8]; |
87a45c96 CF |
158 | static int debug_registers_changed; |
159 | static int debug_registers_used; | |
16d905e2 CF |
160 | |
161 | static int windows_initialization_done; | |
6537bb24 | 162 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 163 | |
3cee93ac CF |
164 | /* The string sent by cygwin when it processes a signal. |
165 | FIXME: This should be in a cygwin include file. */ | |
3929abe9 CF |
166 | #ifndef _CYGWIN_SIGNAL_STRING |
167 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
168 | #endif | |
3cee93ac | 169 | |
29fe111d | 170 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 171 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
172 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
173 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
174 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 | 175 | |
dc05df57 | 176 | static void windows_stop (ptid_t); |
02529b48 | 177 | static int windows_thread_alive (struct target_ops *, ptid_t); |
7d85a9c0 | 178 | static void windows_kill_inferior (struct target_ops *); |
3cee93ac | 179 | |
9bb9e8ad PM |
180 | static void cygwin_set_dr (int i, CORE_ADDR addr); |
181 | static void cygwin_set_dr7 (unsigned long val); | |
182 | static unsigned long cygwin_get_dr6 (void); | |
183 | ||
7393af7c PM |
184 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
185 | /* Set if a signal was received from the debugged process */ | |
186 | ||
3cee93ac | 187 | /* Thread information structure used to track information that is |
6537bb24 | 188 | not available in gdb's thread structure. */ |
3cee93ac | 189 | typedef struct thread_info_struct |
3a4b77d8 JM |
190 | { |
191 | struct thread_info_struct *next; | |
192 | DWORD id; | |
193 | HANDLE h; | |
194 | char *name; | |
6537bb24 | 195 | int suspended; |
3ade5333 | 196 | int reload_context; |
3a4b77d8 | 197 | CONTEXT context; |
1e37c281 | 198 | STACKFRAME sf; |
8e860359 CF |
199 | } |
200 | thread_info; | |
1e37c281 | 201 | |
29fe111d | 202 | static thread_info thread_head; |
24e60978 | 203 | |
24e60978 SC |
204 | /* The process and thread handles for the above context. */ |
205 | ||
3cee93ac CF |
206 | static DEBUG_EVENT current_event; /* The current debug event from |
207 | WaitForDebugEvent */ | |
208 | static HANDLE current_process_handle; /* Currently executing process */ | |
209 | static thread_info *current_thread; /* Info on currently selected thread */ | |
349b409f | 210 | static DWORD main_thread_id; /* Thread ID of the main thread */ |
24e60978 SC |
211 | |
212 | /* Counts of things. */ | |
213 | static int exception_count = 0; | |
214 | static int event_count = 0; | |
dfe7f3ac | 215 | static int saw_create; |
bf25528d | 216 | static int open_process_used = 0; |
24e60978 SC |
217 | |
218 | /* User options. */ | |
219 | static int new_console = 0; | |
10325bc5 | 220 | #ifdef __CYGWIN__ |
09280ddf | 221 | static int cygwin_exceptions = 0; |
10325bc5 | 222 | #endif |
1e37c281 | 223 | static int new_group = 1; |
dfe7f3ac CF |
224 | static int debug_exec = 0; /* show execution */ |
225 | static int debug_events = 0; /* show events from kernel */ | |
226 | static int debug_memory = 0; /* show target memory accesses */ | |
1ef980b9 | 227 | static int debug_exceptions = 0; /* show target exceptions */ |
dfe7f3ac CF |
228 | static int useshell = 0; /* use shell for subprocesses */ |
229 | ||
7e63b4e4 | 230 | /* This vector maps GDB's idea of a register's number into an offset |
dc05df57 | 231 | in the windows exception context vector. |
24e60978 | 232 | |
3cee93ac | 233 | It also contains the bit mask needed to load the register in question. |
24e60978 | 234 | |
7e63b4e4 JB |
235 | The contents of this table can only be computed by the units |
236 | that provide CPU-specific support for Windows native debugging. | |
237 | These units should set the table by calling | |
dc05df57 | 238 | windows_set_context_register_offsets. |
7e63b4e4 | 239 | |
24e60978 SC |
240 | One day we could read a reg, we could inspect the context we |
241 | already have loaded, if it doesn't have the bit set that we need, | |
242 | we read that set of registers in using GetThreadContext. If the | |
243 | context already contains what we need, we just unpack it. Then to | |
244 | write a register, first we have to ensure that the context contains | |
245 | the other regs of the group, and then we copy the info in and set | |
246 | out bit. */ | |
247 | ||
7e63b4e4 | 248 | static const int *mappings; |
d3a09475 | 249 | |
24e60978 SC |
250 | /* This vector maps the target's idea of an exception (extracted |
251 | from the DEBUG_EVENT structure) to GDB's idea. */ | |
252 | ||
253 | struct xlate_exception | |
254 | { | |
255 | int them; | |
256 | enum target_signal us; | |
257 | }; | |
258 | ||
24e60978 SC |
259 | static const struct xlate_exception |
260 | xlate[] = | |
261 | { | |
262 | {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV}, | |
9cbf6c0e | 263 | {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV}, |
24e60978 SC |
264 | {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, |
265 | {DBG_CONTROL_C, TARGET_SIGNAL_INT}, | |
266 | {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, | |
7393af7c | 267 | {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE}, |
24e60978 SC |
268 | {-1, -1}}; |
269 | ||
7e63b4e4 JB |
270 | /* Set the MAPPINGS static global to OFFSETS. |
271 | See the description of MAPPINGS for more details. */ | |
272 | ||
273 | void | |
dc05df57 | 274 | windows_set_context_register_offsets (const int *offsets) |
7e63b4e4 JB |
275 | { |
276 | mappings = offsets; | |
277 | } | |
278 | ||
fa4ba8da PM |
279 | static void |
280 | check (BOOL ok, const char *file, int line) | |
281 | { | |
282 | if (!ok) | |
dfe7f3ac | 283 | printf_filtered ("error return %s:%d was %lu\n", file, line, |
fa4ba8da PM |
284 | GetLastError ()); |
285 | } | |
286 | ||
6537bb24 PA |
287 | /* Find a thread record given a thread id. If GET_CONTEXT is not 0, |
288 | then also retrieve the context for this thread. If GET_CONTEXT is | |
289 | negative, then don't suspend the thread. */ | |
3cee93ac CF |
290 | static thread_info * |
291 | thread_rec (DWORD id, int get_context) | |
24e60978 | 292 | { |
3cee93ac CF |
293 | thread_info *th; |
294 | ||
3a4b77d8 | 295 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
296 | if (th->id == id) |
297 | { | |
6537bb24 | 298 | if (!th->suspended && get_context) |
3cee93ac | 299 | { |
8a892701 | 300 | if (get_context > 0 && id != current_event.dwThreadId) |
6537bb24 PA |
301 | { |
302 | if (SuspendThread (th->h) == (DWORD) -1) | |
303 | { | |
304 | DWORD err = GetLastError (); | |
305 | warning (_("SuspendThread failed. (winerr %d)"), | |
306 | (int) err); | |
307 | return NULL; | |
308 | } | |
309 | th->suspended = 1; | |
310 | } | |
3cee93ac | 311 | else if (get_context < 0) |
6537bb24 | 312 | th->suspended = -1; |
3ade5333 | 313 | th->reload_context = 1; |
3cee93ac CF |
314 | } |
315 | return th; | |
316 | } | |
317 | ||
318 | return NULL; | |
319 | } | |
320 | ||
2dc38344 | 321 | /* Add a thread to the thread list. */ |
3cee93ac | 322 | static thread_info * |
dc05df57 | 323 | windows_add_thread (ptid_t ptid, HANDLE h) |
3cee93ac CF |
324 | { |
325 | thread_info *th; | |
2dc38344 PA |
326 | DWORD id; |
327 | ||
328 | gdb_assert (ptid_get_tid (ptid) != 0); | |
329 | ||
330 | id = ptid_get_tid (ptid); | |
3cee93ac CF |
331 | |
332 | if ((th = thread_rec (id, FALSE))) | |
333 | return th; | |
334 | ||
3929abe9 | 335 | th = XZALLOC (thread_info); |
3cee93ac CF |
336 | th->id = id; |
337 | th->h = h; | |
338 | th->next = thread_head.next; | |
339 | thread_head.next = th; | |
2dc38344 PA |
340 | add_thread (ptid); |
341 | /* Set the debug registers for the new thread if they are used. */ | |
fa4ba8da PM |
342 | if (debug_registers_used) |
343 | { | |
344 | /* Only change the value of the debug registers. */ | |
345 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
346 | CHECK (GetThreadContext (th->h, &th->context)); | |
347 | th->context.Dr0 = dr[0]; | |
348 | th->context.Dr1 = dr[1]; | |
349 | th->context.Dr2 = dr[2]; | |
350 | th->context.Dr3 = dr[3]; | |
6537bb24 | 351 | th->context.Dr6 = DR6_CLEAR_VALUE; |
fa4ba8da PM |
352 | th->context.Dr7 = dr[7]; |
353 | CHECK (SetThreadContext (th->h, &th->context)); | |
354 | th->context.ContextFlags = 0; | |
355 | } | |
3cee93ac | 356 | return th; |
24e60978 SC |
357 | } |
358 | ||
3cee93ac CF |
359 | /* Clear out any old thread list and reintialize it to a |
360 | pristine state. */ | |
24e60978 | 361 | static void |
dc05df57 | 362 | windows_init_thread_list (void) |
24e60978 | 363 | { |
3cee93ac CF |
364 | thread_info *th = &thread_head; |
365 | ||
dc05df57 | 366 | DEBUG_EVENTS (("gdb: windows_init_thread_list\n")); |
3cee93ac CF |
367 | init_thread_list (); |
368 | while (th->next != NULL) | |
24e60978 | 369 | { |
3cee93ac CF |
370 | thread_info *here = th->next; |
371 | th->next = here->next; | |
b8c9b27d | 372 | xfree (here); |
24e60978 | 373 | } |
059198c1 | 374 | thread_head.next = NULL; |
3cee93ac CF |
375 | } |
376 | ||
377 | /* Delete a thread from the list of threads */ | |
378 | static void | |
dc05df57 | 379 | windows_delete_thread (ptid_t ptid) |
3cee93ac CF |
380 | { |
381 | thread_info *th; | |
2dc38344 PA |
382 | DWORD id; |
383 | ||
384 | gdb_assert (ptid_get_tid (ptid) != 0); | |
385 | ||
386 | id = ptid_get_tid (ptid); | |
3cee93ac CF |
387 | |
388 | if (info_verbose) | |
2dc38344 PA |
389 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid)); |
390 | delete_thread (ptid); | |
3cee93ac CF |
391 | |
392 | for (th = &thread_head; | |
393 | th->next != NULL && th->next->id != id; | |
394 | th = th->next) | |
395 | continue; | |
396 | ||
397 | if (th->next != NULL) | |
24e60978 | 398 | { |
3cee93ac CF |
399 | thread_info *here = th->next; |
400 | th->next = here->next; | |
b8c9b27d | 401 | xfree (here); |
24e60978 SC |
402 | } |
403 | } | |
404 | ||
3cee93ac | 405 | static void |
dc05df57 | 406 | do_windows_fetch_inferior_registers (struct regcache *regcache, int r) |
24e60978 | 407 | { |
1e37c281 | 408 | char *context_offset = ((char *) ¤t_thread->context) + mappings[r]; |
20a6ec49 MD |
409 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
410 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
1e37c281 | 411 | long l; |
6c7de422 | 412 | |
3ade5333 | 413 | if (!current_thread) |
d6dc8049 CF |
414 | return; /* Windows sometimes uses a non-existent thread id in its |
415 | events */ | |
3ade5333 CF |
416 | |
417 | if (current_thread->reload_context) | |
418 | { | |
cb832706 | 419 | #ifdef __COPY_CONTEXT_SIZE |
a244bdca CF |
420 | if (have_saved_context) |
421 | { | |
422 | /* Lie about where the program actually is stopped since cygwin has informed us that | |
423 | we should consider the signal to have occurred at another location which is stored | |
424 | in "saved_context. */ | |
425 | memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE); | |
426 | have_saved_context = 0; | |
427 | } | |
428 | else | |
cb832706 | 429 | #endif |
a244bdca CF |
430 | { |
431 | thread_info *th = current_thread; | |
432 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
433 | GetThreadContext (th->h, &th->context); | |
2b008701 | 434 | /* Copy dr values from that thread. |
88616312 PM |
435 | But only if there were not modified since last stop. PR gdb/2388 */ |
436 | if (!debug_registers_changed) | |
437 | { | |
438 | dr[0] = th->context.Dr0; | |
439 | dr[1] = th->context.Dr1; | |
440 | dr[2] = th->context.Dr2; | |
441 | dr[3] = th->context.Dr3; | |
442 | dr[6] = th->context.Dr6; | |
443 | dr[7] = th->context.Dr7; | |
444 | } | |
a244bdca | 445 | } |
3ade5333 CF |
446 | current_thread->reload_context = 0; |
447 | } | |
448 | ||
20a6ec49 | 449 | if (r == I387_FISEG_REGNUM (tdep)) |
1e37c281 | 450 | { |
8e860359 | 451 | l = *((long *) context_offset) & 0xffff; |
56be3814 | 452 | regcache_raw_supply (regcache, r, (char *) &l); |
1e37c281 | 453 | } |
20a6ec49 | 454 | else if (r == I387_FOP_REGNUM (tdep)) |
1e37c281 | 455 | { |
8e860359 | 456 | l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); |
56be3814 | 457 | regcache_raw_supply (regcache, r, (char *) &l); |
1e37c281 JM |
458 | } |
459 | else if (r >= 0) | |
56be3814 | 460 | regcache_raw_supply (regcache, r, context_offset); |
3cee93ac | 461 | else |
24e60978 | 462 | { |
20a6ec49 | 463 | for (r = 0; r < gdbarch_num_regs (gdbarch); r++) |
dc05df57 | 464 | do_windows_fetch_inferior_registers (regcache, r); |
24e60978 | 465 | } |
3cee93ac CF |
466 | } |
467 | ||
468 | static void | |
28439f5e PA |
469 | windows_fetch_inferior_registers (struct target_ops *ops, |
470 | struct regcache *regcache, int r) | |
3cee93ac | 471 | { |
2dc38344 | 472 | current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE); |
d6dc8049 CF |
473 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
474 | thread id in its events */ | |
3ade5333 | 475 | if (current_thread) |
dc05df57 | 476 | do_windows_fetch_inferior_registers (regcache, r); |
3cee93ac CF |
477 | } |
478 | ||
479 | static void | |
dc05df57 | 480 | do_windows_store_inferior_registers (const struct regcache *regcache, int r) |
3cee93ac | 481 | { |
3ade5333 | 482 | if (!current_thread) |
d6dc8049 | 483 | /* Windows sometimes uses a non-existent thread id in its events */; |
3ade5333 | 484 | else if (r >= 0) |
56be3814 | 485 | regcache_raw_collect (regcache, r, |
822c9732 | 486 | ((char *) ¤t_thread->context) + mappings[r]); |
24e60978 SC |
487 | else |
488 | { | |
40a6adc1 | 489 | for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++) |
dc05df57 | 490 | do_windows_store_inferior_registers (regcache, r); |
24e60978 SC |
491 | } |
492 | } | |
493 | ||
3cee93ac CF |
494 | /* Store a new register value into the current thread context */ |
495 | static void | |
28439f5e PA |
496 | windows_store_inferior_registers (struct target_ops *ops, |
497 | struct regcache *regcache, int r) | |
3cee93ac | 498 | { |
2dc38344 | 499 | current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE); |
d6dc8049 CF |
500 | /* Check if current_thread exists. Windows sometimes uses a non-existent |
501 | thread id in its events */ | |
3ade5333 | 502 | if (current_thread) |
dc05df57 | 503 | do_windows_store_inferior_registers (regcache, r); |
3cee93ac | 504 | } |
24e60978 | 505 | |
33605d39 CF |
506 | /* Get the name of a given module at at given base address. If base_address |
507 | is zero return the first loaded module (which is always the name of the | |
508 | executable). */ | |
3ee6f623 | 509 | static int |
d3653bf6 | 510 | get_module_name (LPVOID base_address, char *dll_name_ret) |
1e37c281 JM |
511 | { |
512 | DWORD len; | |
513 | MODULEINFO mi; | |
514 | int i; | |
8e860359 | 515 | HMODULE dh_buf[1]; |
33605d39 | 516 | HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */ |
1e37c281 | 517 | DWORD cbNeeded; |
33605d39 | 518 | #ifdef __CYGWIN__ |
b3c613f2 CF |
519 | cygwin_buf_t pathbuf[__PMAX]; /* Temporary storage prior to converting to |
520 | posix form. __PMAX is always enough | |
d0d0ab16 CV |
521 | as long as SO_NAME_MAX_PATH_SIZE is defined |
522 | as 512. */ | |
33605d39 | 523 | #endif |
1e37c281 | 524 | |
1e37c281 | 525 | cbNeeded = 0; |
33605d39 | 526 | /* Find size of buffer needed to handle list of modules loaded in inferior */ |
2b008701 CF |
527 | if (!EnumProcessModules (current_process_handle, DllHandle, |
528 | sizeof (HMODULE), &cbNeeded) || !cbNeeded) | |
1e37c281 JM |
529 | goto failed; |
530 | ||
33605d39 | 531 | /* Allocate correct amount of space for module list */ |
8e860359 | 532 | DllHandle = (HMODULE *) alloca (cbNeeded); |
1e37c281 JM |
533 | if (!DllHandle) |
534 | goto failed; | |
535 | ||
33605d39 | 536 | /* Get the list of modules */ |
2b008701 | 537 | if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded, |
33605d39 | 538 | &cbNeeded)) |
1e37c281 JM |
539 | goto failed; |
540 | ||
29fe111d | 541 | for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++) |
1e37c281 | 542 | { |
33605d39 | 543 | /* Get information on this module */ |
2b008701 CF |
544 | if (!GetModuleInformation (current_process_handle, DllHandle[i], |
545 | &mi, sizeof (mi))) | |
8a3fe4f8 | 546 | error (_("Can't get module info")); |
1e37c281 | 547 | |
d3653bf6 | 548 | if (!base_address || mi.lpBaseOfDll == base_address) |
33605d39 CF |
549 | { |
550 | /* Try to find the name of the given module */ | |
d0d0ab16 CV |
551 | #ifdef __CYGWIN__ |
552 | /* Cygwin prefers that the path be in /x/y/z format */ | |
b3c613f2 CF |
553 | len = GetModuleFileNameEx (current_process_handle, |
554 | DllHandle[i], pathbuf, __PMAX); | |
d0d0ab16 CV |
555 | if (len == 0) |
556 | error (_("Error getting dll name: %lu."), GetLastError ()); | |
557 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, dll_name_ret, | |
b3c613f2 | 558 | __PMAX) < 0) |
d0d0ab16 CV |
559 | error (_("Error converting dll name to POSIX: %d."), errno); |
560 | #else | |
b3c613f2 CF |
561 | len = GetModuleFileNameEx (current_process_handle, |
562 | DllHandle[i], dll_name_ret, __PMAX); | |
33605d39 CF |
563 | if (len == 0) |
564 | error (_("Error getting dll name: %u."), (unsigned) GetLastError ()); | |
33605d39 CF |
565 | #endif |
566 | return 1; /* success */ | |
567 | } | |
1e37c281 JM |
568 | } |
569 | ||
570 | failed: | |
571 | dll_name_ret[0] = '\0'; | |
33605d39 | 572 | return 0; /* failure */ |
1e37c281 JM |
573 | } |
574 | ||
450005e7 CF |
575 | /* Encapsulate the information required in a call to |
576 | symbol_file_add_args */ | |
8a892701 CF |
577 | struct safe_symbol_file_add_args |
578 | { | |
579 | char *name; | |
580 | int from_tty; | |
581 | struct section_addr_info *addrs; | |
582 | int mainline; | |
583 | int flags; | |
7c5c87c0 | 584 | struct ui_file *err, *out; |
8a892701 CF |
585 | struct objfile *ret; |
586 | }; | |
587 | ||
02e423b9 | 588 | /* Maintain a linked list of "so" information. */ |
3ee6f623 | 589 | struct lm_info |
02e423b9 | 590 | { |
d3653bf6 | 591 | LPVOID load_addr; |
3ee6f623 CF |
592 | }; |
593 | ||
594 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 595 | |
450005e7 CF |
596 | /* Call symbol_file_add with stderr redirected. We don't care if there |
597 | are errors. */ | |
8a892701 CF |
598 | static int |
599 | safe_symbol_file_add_stub (void *argv) | |
600 | { | |
3ee6f623 | 601 | #define p ((struct safe_symbol_file_add_args *) argv) |
7eedccfa PP |
602 | const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0) |
603 | | (p->mainline ? SYMFILE_MAINLINE : 0)); | |
604 | p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags); | |
8a892701 CF |
605 | return !!p->ret; |
606 | #undef p | |
607 | } | |
608 | ||
450005e7 | 609 | /* Restore gdb's stderr after calling symbol_file_add */ |
8a892701 | 610 | static void |
7c5c87c0 | 611 | safe_symbol_file_add_cleanup (void *p) |
8a892701 | 612 | { |
8e860359 | 613 | #define sp ((struct safe_symbol_file_add_args *)p) |
450005e7 | 614 | gdb_flush (gdb_stderr); |
7c5c87c0 | 615 | gdb_flush (gdb_stdout); |
d3ff4a77 | 616 | ui_file_delete (gdb_stderr); |
7c5c87c0 | 617 | ui_file_delete (gdb_stdout); |
d3ff4a77 | 618 | gdb_stderr = sp->err; |
9d3789f7 | 619 | gdb_stdout = sp->out; |
8e860359 | 620 | #undef sp |
8a892701 CF |
621 | } |
622 | ||
450005e7 | 623 | /* symbol_file_add wrapper that prevents errors from being displayed. */ |
8a892701 CF |
624 | static struct objfile * |
625 | safe_symbol_file_add (char *name, int from_tty, | |
626 | struct section_addr_info *addrs, | |
627 | int mainline, int flags) | |
8a892701 CF |
628 | { |
629 | struct safe_symbol_file_add_args p; | |
630 | struct cleanup *cleanup; | |
631 | ||
7c5c87c0 | 632 | cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p); |
8a892701 | 633 | |
7c5c87c0 CF |
634 | p.err = gdb_stderr; |
635 | p.out = gdb_stdout; | |
450005e7 | 636 | gdb_flush (gdb_stderr); |
7c5c87c0 | 637 | gdb_flush (gdb_stdout); |
d3ff4a77 | 638 | gdb_stderr = ui_file_new (); |
7c5c87c0 | 639 | gdb_stdout = ui_file_new (); |
8a892701 CF |
640 | p.name = name; |
641 | p.from_tty = from_tty; | |
642 | p.addrs = addrs; | |
643 | p.mainline = mainline; | |
644 | p.flags = flags; | |
645 | catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR); | |
646 | ||
647 | do_cleanups (cleanup); | |
648 | return p.ret; | |
649 | } | |
650 | ||
de1b3c3d | 651 | static struct so_list * |
dc05df57 | 652 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 653 | { |
3ee6f623 | 654 | struct so_list *so; |
d0d0ab16 CV |
655 | char *p; |
656 | #ifndef __CYGWIN__ | |
b3c613f2 CF |
657 | char buf[__PMAX]; |
658 | char cwd[__PMAX]; | |
3f8ad85b CF |
659 | WIN32_FIND_DATA w32_fd; |
660 | HANDLE h = FindFirstFile(name, &w32_fd); | |
3f8ad85b | 661 | |
6badb179 CF |
662 | if (h == INVALID_HANDLE_VALUE) |
663 | strcpy (buf, name); | |
664 | else | |
3f8ad85b | 665 | { |
c914e0cc CF |
666 | FindClose (h); |
667 | strcpy (buf, name); | |
668 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
669 | { | |
670 | p = strrchr (buf, '\\'); | |
671 | if (p) | |
672 | p[1] = '\0'; | |
673 | SetCurrentDirectory (buf); | |
674 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
675 | SetCurrentDirectory (cwd); | |
676 | } | |
3f8ad85b | 677 | } |
3ee6f623 CF |
678 | if (strcasecmp (buf, "ntdll.dll") == 0) |
679 | { | |
680 | GetSystemDirectory (buf, sizeof (buf)); | |
681 | strcat (buf, "\\ntdll.dll"); | |
682 | } | |
d0d0ab16 | 683 | #else |
b3c613f2 | 684 | cygwin_buf_t buf[__PMAX]; |
d0d0ab16 | 685 | |
b3c613f2 | 686 | buf[0] = 0; |
d0d0ab16 CV |
687 | if (access (name, F_OK) != 0) |
688 | { | |
689 | if (strcasecmp (name, "ntdll.dll") == 0) | |
b3c613f2 | 690 | #ifdef __USEWIDE |
d0d0ab16 CV |
691 | { |
692 | GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t)); | |
693 | wcscat (buf, L"\\ntdll.dll"); | |
694 | } | |
b3c613f2 CF |
695 | #else |
696 | { | |
697 | GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t)); | |
698 | strcat (buf, "\\ntdll.dll"); | |
699 | } | |
700 | #endif | |
d0d0ab16 CV |
701 | } |
702 | #endif | |
3929abe9 | 703 | so = XZALLOC (struct so_list); |
3ee6f623 CF |
704 | so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info)); |
705 | so->lm_info->load_addr = load_addr; | |
de1b3c3d | 706 | strcpy (so->so_original_name, name); |
10325bc5 PA |
707 | #ifndef __CYGWIN__ |
708 | strcpy (so->so_name, buf); | |
709 | #else | |
d0d0ab16 CV |
710 | if (buf[0]) |
711 | cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name, | |
712 | SO_NAME_MAX_PATH_SIZE); | |
713 | else | |
714 | { | |
60c5c021 | 715 | char *rname = realpath (name, NULL); |
d0d0ab16 CV |
716 | if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE) |
717 | { | |
718 | strcpy (so->so_name, rname); | |
719 | free (rname); | |
720 | } | |
721 | else | |
722 | error (_("dll path too long")); | |
723 | } | |
de1b3c3d PA |
724 | /* Record cygwin1.dll .text start/end. */ |
725 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
726 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
727 | { | |
728 | bfd *abfd; | |
729 | asection *text = NULL; | |
730 | CORE_ADDR text_vma; | |
8e860359 | 731 | |
610dd7f9 | 732 | abfd = bfd_openr (so->so_name, "pei-i386"); |
a244bdca | 733 | |
de1b3c3d PA |
734 | if (!abfd) |
735 | return so; | |
736 | ||
737 | if (bfd_check_format (abfd, bfd_object)) | |
738 | text = bfd_get_section_by_name (abfd, ".text"); | |
739 | ||
740 | if (!text) | |
741 | { | |
742 | bfd_close (abfd); | |
743 | return so; | |
744 | } | |
745 | ||
746 | /* The symbols in a dll are offset by 0x1000, which is the the | |
747 | offset from 0 of the first byte in an image - because of the | |
748 | file header and the section alignment. */ | |
dc05df57 CF |
749 | cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) load_addr + 0x1000); |
750 | cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text); | |
de1b3c3d PA |
751 | |
752 | bfd_close (abfd); | |
753 | } | |
10325bc5 | 754 | #endif |
de1b3c3d PA |
755 | |
756 | return so; | |
8e860359 CF |
757 | } |
758 | ||
3ee6f623 | 759 | static char * |
dfe7f3ac CF |
760 | get_image_name (HANDLE h, void *address, int unicode) |
761 | { | |
d0d0ab16 | 762 | #ifdef __CYGWIN__ |
b3c613f2 | 763 | static char buf[__PMAX]; |
d0d0ab16 | 764 | #else |
b3c613f2 | 765 | static char buf[(2 * __PMAX) + 1]; |
d0d0ab16 | 766 | #endif |
dfe7f3ac CF |
767 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); |
768 | char *address_ptr; | |
769 | int len = 0; | |
770 | char b[2]; | |
5732a500 | 771 | SIZE_T done; |
dfe7f3ac CF |
772 | |
773 | /* Attempt to read the name of the dll that was detected. | |
774 | This is documented to work only when actively debugging | |
775 | a program. It will not work for attached processes. */ | |
776 | if (address == NULL) | |
777 | return NULL; | |
778 | ||
dfe7f3ac CF |
779 | /* See if we could read the address of a string, and that the |
780 | address isn't null. */ | |
9f476a01 | 781 | if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) |
6f17862b | 782 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
783 | return NULL; |
784 | ||
785 | /* Find the length of the string */ | |
6f17862b CF |
786 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
787 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
788 | continue; | |
dfe7f3ac CF |
789 | |
790 | if (!unicode) | |
791 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
792 | else | |
793 | { | |
794 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
795 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
796 | &done); | |
d0d0ab16 | 797 | #ifdef __CYGWIN__ |
b3c613f2 | 798 | wcstombs (buf, unicode_address, __PMAX); |
d0d0ab16 CV |
799 | #else |
800 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf, | |
801 | 0, 0); | |
802 | #endif | |
dfe7f3ac CF |
803 | } |
804 | ||
805 | return buf; | |
806 | } | |
807 | ||
24e60978 SC |
808 | /* Wait for child to do something. Return pid of child, or -1 in case |
809 | of error; store status through argument pointer OURSTATUS. */ | |
1750a5ef | 810 | static int |
0a65a603 | 811 | handle_load_dll (void *dummy) |
24e60978 | 812 | { |
3a4b77d8 | 813 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
b3c613f2 | 814 | char dll_buf[__PMAX]; |
450005e7 | 815 | char *dll_name = NULL; |
3cee93ac | 816 | |
3a4b77d8 | 817 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 818 | |
d3653bf6 | 819 | if (!get_module_name (event->lpBaseOfDll, dll_buf)) |
8e860359 | 820 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
3cee93ac | 821 | |
1e37c281 | 822 | dll_name = dll_buf; |
24e60978 | 823 | |
dfe7f3ac | 824 | if (*dll_name == '\0') |
de1b3c3d PA |
825 | dll_name = get_image_name (current_process_handle, |
826 | event->lpImageName, event->fUnicode); | |
3cee93ac CF |
827 | if (!dll_name) |
828 | return 1; | |
829 | ||
dc05df57 | 830 | solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll); |
de1b3c3d | 831 | solib_end = solib_end->next; |
450005e7 | 832 | |
a74ce742 PM |
833 | DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name, |
834 | host_address_to_string (solib_end->lm_info->load_addr))); | |
7488902c | 835 | |
450005e7 CF |
836 | return 1; |
837 | } | |
838 | ||
3ee6f623 | 839 | static void |
dc05df57 | 840 | windows_free_so (struct so_list *so) |
3ee6f623 | 841 | { |
3ee6f623 CF |
842 | if (so->lm_info) |
843 | xfree (so->lm_info); | |
de1b3c3d | 844 | xfree (so); |
3cb8e7f6 CF |
845 | } |
846 | ||
d3ff4a77 | 847 | static int |
0a65a603 | 848 | handle_unload_dll (void *dummy) |
d3ff4a77 | 849 | { |
d3653bf6 | 850 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 851 | struct so_list *so; |
d3ff4a77 CF |
852 | |
853 | for (so = &solib_start; so->next != NULL; so = so->next) | |
3ee6f623 | 854 | if (so->next->lm_info->load_addr == lpBaseOfDll) |
d3ff4a77 | 855 | { |
3ee6f623 | 856 | struct so_list *sodel = so->next; |
d3ff4a77 CF |
857 | so->next = sodel->next; |
858 | if (!so->next) | |
859 | solib_end = so; | |
7488902c PM |
860 | DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name)); |
861 | ||
dc05df57 | 862 | windows_free_so (sodel); |
3929abe9 | 863 | solib_add (NULL, 0, NULL, auto_solib_add); |
d3ff4a77 CF |
864 | return 1; |
865 | } | |
3929abe9 | 866 | |
ecc13e53 JB |
867 | /* We did not find any DLL that was previously loaded at this address, |
868 | so register a complaint. We do not report an error, because we have | |
869 | observed that this may be happening under some circumstances. For | |
870 | instance, running 32bit applications on x64 Windows causes us to receive | |
871 | 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these | |
872 | events are apparently caused by the WOW layer, the interface between | |
873 | 32bit and 64bit worlds). */ | |
874 | complaint (&symfile_complaints, _("dll starting at %s not found."), | |
875 | host_address_to_string (lpBaseOfDll)); | |
d3ff4a77 CF |
876 | |
877 | return 0; | |
878 | } | |
879 | ||
450005e7 | 880 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 881 | static void |
dc05df57 | 882 | windows_clear_solib (void) |
450005e7 | 883 | { |
450005e7 CF |
884 | solib_start.next = NULL; |
885 | solib_end = &solib_start; | |
450005e7 | 886 | } |
295732ea | 887 | |
450005e7 CF |
888 | /* Load DLL symbol info. */ |
889 | void | |
7470a420 | 890 | dll_symbol_command (char *args, int from_tty) |
450005e7 | 891 | { |
8e860359 | 892 | int n; |
450005e7 | 893 | dont_repeat (); |
8e860359 | 894 | |
450005e7 | 895 | if (args == NULL) |
8a3fe4f8 | 896 | error (_("dll-symbols requires a file name")); |
450005e7 | 897 | |
8e860359 CF |
898 | n = strlen (args); |
899 | if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0) | |
900 | { | |
901 | char *newargs = (char *) alloca (n + 4 + 1); | |
902 | strcpy (newargs, args); | |
903 | strcat (newargs, ".dll"); | |
904 | args = newargs; | |
905 | } | |
906 | ||
7470a420 | 907 | safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED); |
8e860359 | 908 | } |
450005e7 | 909 | |
3cee93ac CF |
910 | /* Handle DEBUG_STRING output from child process. |
911 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
912 | a Cygwin signal. Otherwise just print the string as a warning. */ | |
913 | static int | |
914 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
915 | { | |
a244bdca CF |
916 | char *s = NULL; |
917 | int retval = 0; | |
3cee93ac CF |
918 | |
919 | if (!target_read_string | |
2c647436 PM |
920 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, |
921 | &s, 1024, 0) | |
3cee93ac | 922 | || !s || !*s) |
a244bdca CF |
923 | /* nothing to do */; |
924 | else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0) | |
3cee93ac | 925 | { |
10325bc5 | 926 | #ifdef __CYGWIN__ |
d3a09475 | 927 | if (strncmp (s, "cYg", 3) != 0) |
10325bc5 | 928 | #endif |
8a3fe4f8 | 929 | warning (("%s"), s); |
3cee93ac | 930 | } |
cb832706 | 931 | #ifdef __COPY_CONTEXT_SIZE |
d3a09475 | 932 | else |
3cee93ac | 933 | { |
a244bdca CF |
934 | /* Got a cygwin signal marker. A cygwin signal is followed by the signal number |
935 | itself and then optionally followed by the thread id and address to saved context | |
936 | within the DLL. If these are supplied, then the given thread is assumed to have | |
937 | issued the signal and the context from the thread is assumed to be stored at the | |
938 | given address in the inferior. Tell gdb to treat this like a real signal. */ | |
3cee93ac | 939 | char *p; |
3929abe9 | 940 | int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
a244bdca | 941 | int gotasig = target_signal_from_host (sig); |
0714f9bf SS |
942 | ourstatus->value.sig = gotasig; |
943 | if (gotasig) | |
a244bdca CF |
944 | { |
945 | LPCVOID x; | |
946 | DWORD n; | |
947 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
948 | retval = strtoul (p, &p, 0); | |
949 | if (!retval) | |
950 | retval = main_thread_id; | |
951 | else if ((x = (LPCVOID) strtoul (p, &p, 0)) | |
952 | && ReadProcessMemory (current_process_handle, x, | |
953 | &saved_context, __COPY_CONTEXT_SIZE, &n) | |
954 | && n == __COPY_CONTEXT_SIZE) | |
955 | have_saved_context = 1; | |
956 | current_event.dwThreadId = retval; | |
957 | } | |
3cee93ac | 958 | } |
cb832706 | 959 | #endif |
3cee93ac | 960 | |
a244bdca CF |
961 | if (s) |
962 | xfree (s); | |
963 | return retval; | |
3cee93ac | 964 | } |
24e60978 | 965 | |
c1748f97 PM |
966 | static int |
967 | display_selector (HANDLE thread, DWORD sel) | |
968 | { | |
969 | LDT_ENTRY info; | |
970 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
971 | { | |
972 | int base, limit; | |
973 | printf_filtered ("0x%03lx: ", sel); | |
974 | if (!info.HighWord.Bits.Pres) | |
baa93fa6 CF |
975 | { |
976 | puts_filtered ("Segment not present\n"); | |
977 | return 0; | |
978 | } | |
c1748f97 PM |
979 | base = (info.HighWord.Bits.BaseHi << 24) + |
980 | (info.HighWord.Bits.BaseMid << 16) | |
981 | + info.BaseLow; | |
982 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
983 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 984 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
985 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
986 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 987 | puts_filtered(" 32-bit "); |
c1748f97 | 988 | else |
baa93fa6 | 989 | puts_filtered(" 16-bit "); |
c1748f97 PM |
990 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
991 | { | |
992 | case 0: | |
baa93fa6 CF |
993 | puts_filtered ("Data (Read-Only, Exp-up"); |
994 | break; | |
c1748f97 | 995 | case 1: |
baa93fa6 CF |
996 | puts_filtered ("Data (Read/Write, Exp-up"); |
997 | break; | |
c1748f97 | 998 | case 2: |
baa93fa6 CF |
999 | puts_filtered ("Unused segment ("); |
1000 | break; | |
c1748f97 | 1001 | case 3: |
baa93fa6 CF |
1002 | puts_filtered ("Data (Read/Write, Exp-down"); |
1003 | break; | |
c1748f97 | 1004 | case 4: |
baa93fa6 CF |
1005 | puts_filtered ("Code (Exec-Only, N.Conf"); |
1006 | break; | |
c1748f97 | 1007 | case 5: |
baa93fa6 | 1008 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
1009 | break; |
1010 | case 6: | |
baa93fa6 | 1011 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
1012 | break; |
1013 | case 7: | |
baa93fa6 | 1014 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
1015 | break; |
1016 | default: | |
1017 | printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); | |
1018 | } | |
1019 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 1020 | puts_filtered(", N.Acc"); |
c1748f97 PM |
1021 | puts_filtered (")\n"); |
1022 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
1023 | puts_filtered("System selector "); | |
1024 | printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); | |
1025 | if (info.HighWord.Bits.Granularity) | |
baa93fa6 | 1026 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
1027 | else |
1028 | puts_filtered ("Byte granular.\n"); | |
1029 | return 1; | |
1030 | } | |
1031 | else | |
1032 | { | |
1033 | printf_filtered ("Invalid selector 0x%lx.\n",sel); | |
1034 | return 0; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | static void | |
1039 | display_selectors (char * args, int from_tty) | |
1040 | { | |
1041 | if (!current_thread) | |
1042 | { | |
1043 | puts_filtered ("Impossible to display selectors now.\n"); | |
1044 | return; | |
1045 | } | |
1046 | if (!args) | |
1047 | { | |
1048 | ||
1049 | puts_filtered ("Selector $cs\n"); | |
1050 | display_selector (current_thread->h, | |
baa93fa6 | 1051 | current_thread->context.SegCs); |
c1748f97 PM |
1052 | puts_filtered ("Selector $ds\n"); |
1053 | display_selector (current_thread->h, | |
baa93fa6 | 1054 | current_thread->context.SegDs); |
c1748f97 PM |
1055 | puts_filtered ("Selector $es\n"); |
1056 | display_selector (current_thread->h, | |
baa93fa6 | 1057 | current_thread->context.SegEs); |
c1748f97 PM |
1058 | puts_filtered ("Selector $ss\n"); |
1059 | display_selector (current_thread->h, | |
baa93fa6 | 1060 | current_thread->context.SegSs); |
c1748f97 PM |
1061 | puts_filtered ("Selector $fs\n"); |
1062 | display_selector (current_thread->h, | |
1063 | current_thread->context.SegFs); | |
1064 | puts_filtered ("Selector $gs\n"); | |
1065 | display_selector (current_thread->h, | |
baa93fa6 | 1066 | current_thread->context.SegGs); |
c1748f97 PM |
1067 | } |
1068 | else | |
1069 | { | |
1070 | int sel; | |
1071 | sel = parse_and_eval_long (args); | |
1072 | printf_filtered ("Selector \"%s\"\n",args); | |
1073 | display_selector (current_thread->h, sel); | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | static struct cmd_list_element *info_w32_cmdlist = NULL; | |
1078 | ||
1079 | static void | |
1080 | info_w32_command (char *args, int from_tty) | |
1081 | { | |
1082 | help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); | |
1083 | } | |
1084 | ||
1085 | ||
7393af7c | 1086 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
a74ce742 PM |
1087 | printf_unfiltered ("gdb: Target exception %s at %s\n", x, \ |
1088 | host_address_to_string (\ | |
1089 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)) | |
7393af7c | 1090 | |
36339ecd | 1091 | static int |
450005e7 | 1092 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 1093 | { |
3cee93ac | 1094 | thread_info *th; |
29fe111d | 1095 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
3cee93ac | 1096 | |
29fe111d | 1097 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1098 | |
3cee93ac CF |
1099 | /* Record the context of the current thread */ |
1100 | th = thread_rec (current_event.dwThreadId, -1); | |
24e60978 | 1101 | |
29fe111d | 1102 | switch (code) |
24e60978 | 1103 | { |
1ef980b9 | 1104 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c PM |
1105 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
1106 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
10325bc5 | 1107 | #ifdef __CYGWIN__ |
8da8e0b3 | 1108 | { |
a244bdca CF |
1109 | /* See if the access violation happened within the cygwin DLL itself. Cygwin uses |
1110 | a kind of exception handling to deal with passed-in invalid addresses. gdb | |
1111 | should not treat these as real SEGVs since they will be silently handled by | |
1112 | cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process | |
1113 | and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up | |
1114 | within the text segment of the DLL itself. */ | |
8da8e0b3 | 1115 | char *fn; |
dc05df57 | 1116 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) current_event.u.Exception.ExceptionRecord.ExceptionAddress; |
09280ddf | 1117 | if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end)) |
a244bdca CF |
1118 | || (find_pc_partial_function (addr, &fn, NULL, NULL) |
1119 | && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)) | |
8da8e0b3 CF |
1120 | return 0; |
1121 | } | |
10325bc5 | 1122 | #endif |
7393af7c PM |
1123 | break; |
1124 | case STATUS_STACK_OVERFLOW: | |
1125 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
1ef980b9 | 1126 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
7393af7c PM |
1127 | break; |
1128 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1129 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
1130 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1131 | break; | |
1132 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1133 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
1134 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1135 | break; | |
1136 | case STATUS_FLOAT_INEXACT_RESULT: | |
1137 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
1138 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1139 | break; | |
1140 | case STATUS_FLOAT_INVALID_OPERATION: | |
1141 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
1142 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1143 | break; | |
1144 | case STATUS_FLOAT_OVERFLOW: | |
1145 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
1146 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1147 | break; | |
1148 | case STATUS_FLOAT_STACK_CHECK: | |
1149 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
1150 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 | 1151 | break; |
3b7c8b74 | 1152 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c PM |
1153 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
1154 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1155 | break; | |
3b7c8b74 | 1156 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c PM |
1157 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
1158 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1159 | break; | |
3b7c8b74 | 1160 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1161 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
3b7c8b74 | 1162 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
3b7c8b74 | 1163 | break; |
7393af7c PM |
1164 | case STATUS_INTEGER_OVERFLOW: |
1165 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
1166 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1ef980b9 SC |
1167 | break; |
1168 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1169 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
1ef980b9 SC |
1170 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1171 | break; | |
1172 | case DBG_CONTROL_C: | |
7393af7c | 1173 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
1ef980b9 | 1174 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
5b421780 PM |
1175 | break; |
1176 | case DBG_CONTROL_BREAK: | |
7393af7c | 1177 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
5b421780 | 1178 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
1ef980b9 SC |
1179 | break; |
1180 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1181 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
1ef980b9 SC |
1182 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
1183 | break; | |
8227c82d | 1184 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c PM |
1185 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
1186 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1187 | break; | |
1188 | case EXCEPTION_PRIV_INSTRUCTION: | |
1189 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
1190 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1191 | break; | |
1192 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1193 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
8227c82d CF |
1194 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
1195 | break; | |
1ef980b9 | 1196 | default: |
a244bdca | 1197 | /* Treat unhandled first chance exceptions specially. */ |
02e423b9 | 1198 | if (current_event.u.Exception.dwFirstChance) |
a244bdca | 1199 | return -1; |
a74ce742 PM |
1200 | printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n", |
1201 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1202 | host_address_to_string ( | |
1203 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)); | |
24e60978 | 1204 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
1ef980b9 | 1205 | break; |
24e60978 | 1206 | } |
24e60978 | 1207 | exception_count++; |
7393af7c | 1208 | last_sig = ourstatus->value.sig; |
36339ecd | 1209 | return 1; |
24e60978 SC |
1210 | } |
1211 | ||
3cee93ac CF |
1212 | /* Resume all artificially suspended threads if we are continuing |
1213 | execution */ | |
1214 | static BOOL | |
dc05df57 | 1215 | windows_continue (DWORD continue_status, int id) |
3cee93ac CF |
1216 | { |
1217 | int i; | |
1218 | thread_info *th; | |
1219 | BOOL res; | |
1220 | ||
1c1238a5 | 1221 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%lx, %s);\n", |
7393af7c | 1222 | current_event.dwProcessId, current_event.dwThreadId, |
dfe7f3ac | 1223 | continue_status == DBG_CONTINUE ? |
7393af7c | 1224 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
6537bb24 PA |
1225 | |
1226 | for (th = &thread_head; (th = th->next) != NULL;) | |
1227 | if ((id == -1 || id == (int) th->id) | |
1228 | && th->suspended) | |
1229 | { | |
1230 | if (debug_registers_changed) | |
1231 | { | |
1232 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1233 | th->context.Dr0 = dr[0]; | |
1234 | th->context.Dr1 = dr[1]; | |
1235 | th->context.Dr2 = dr[2]; | |
1236 | th->context.Dr3 = dr[3]; | |
1237 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1238 | th->context.Dr7 = dr[7]; | |
1239 | } | |
1240 | if (th->context.ContextFlags) | |
1241 | { | |
1242 | CHECK (SetThreadContext (th->h, &th->context)); | |
1243 | th->context.ContextFlags = 0; | |
1244 | } | |
1245 | if (th->suspended > 0) | |
1246 | (void) ResumeThread (th->h); | |
1247 | th->suspended = 0; | |
1248 | } | |
1249 | ||
0714f9bf SS |
1250 | res = ContinueDebugEvent (current_event.dwProcessId, |
1251 | current_event.dwThreadId, | |
1252 | continue_status); | |
3cee93ac | 1253 | |
fa4ba8da | 1254 | debug_registers_changed = 0; |
3cee93ac CF |
1255 | return res; |
1256 | } | |
1257 | ||
d6dc8049 CF |
1258 | /* Called in pathological case where Windows fails to send a |
1259 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1260 | static DWORD |
5439edaa | 1261 | fake_create_process (void) |
3ade5333 CF |
1262 | { |
1263 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1264 | current_event.dwProcessId); | |
bf25528d CF |
1265 | if (current_process_handle != NULL) |
1266 | open_process_used = 1; | |
1267 | else | |
1268 | { | |
1269 | error (_("OpenProcess call failed, GetLastError = %lud\n"), | |
1270 | GetLastError ()); | |
1271 | /* We can not debug anything in that case. */ | |
1272 | } | |
3ade5333 | 1273 | main_thread_id = current_event.dwThreadId; |
dc05df57 CF |
1274 | current_thread = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
1275 | current_event.dwThreadId), | |
1276 | current_event.u.CreateThread.hThread); | |
3ade5333 CF |
1277 | return main_thread_id; |
1278 | } | |
1279 | ||
a244bdca | 1280 | static void |
28439f5e PA |
1281 | windows_resume (struct target_ops *ops, |
1282 | ptid_t ptid, int step, enum target_signal sig) | |
a244bdca CF |
1283 | { |
1284 | thread_info *th; | |
1285 | DWORD continue_status = DBG_CONTINUE; | |
1286 | ||
2dc38344 PA |
1287 | /* A specific PTID means `step only this thread id'. */ |
1288 | int resume_all = ptid_equal (ptid, minus_one_ptid); | |
1289 | ||
1290 | /* If we're continuing all threads, it's the current inferior that | |
1291 | should be handled specially. */ | |
1292 | if (resume_all) | |
1293 | ptid = inferior_ptid; | |
a244bdca CF |
1294 | |
1295 | if (sig != TARGET_SIGNAL_0) | |
1296 | { | |
1297 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1298 | { | |
1299 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1300 | } | |
1301 | else if (sig == last_sig) | |
1302 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1303 | else | |
1304 | #if 0 | |
1305 | /* This code does not seem to work, because | |
1306 | the kernel does probably not consider changes in the ExceptionRecord | |
1307 | structure when passing the exception to the inferior. | |
1308 | Note that this seems possible in the exception handler itself. */ | |
1309 | { | |
1310 | int i; | |
1311 | for (i = 0; xlate[i].them != -1; i++) | |
1312 | if (xlate[i].us == sig) | |
1313 | { | |
1314 | current_event.u.Exception.ExceptionRecord.ExceptionCode = | |
1315 | xlate[i].them; | |
1316 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1317 | break; | |
1318 | } | |
1319 | if (continue_status == DBG_CONTINUE) | |
1320 | { | |
1321 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1322 | } | |
1323 | } | |
1324 | #endif | |
1325 | DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n", | |
1326 | last_sig)); | |
1327 | } | |
1328 | ||
1329 | last_sig = TARGET_SIGNAL_0; | |
1330 | ||
dc05df57 | 1331 | DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n", |
2dc38344 | 1332 | ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig)); |
a244bdca CF |
1333 | |
1334 | /* Get context for currently selected thread */ | |
2dc38344 | 1335 | th = thread_rec (ptid_get_tid (inferior_ptid), FALSE); |
a244bdca CF |
1336 | if (th) |
1337 | { | |
1338 | if (step) | |
1339 | { | |
1340 | /* Single step by setting t bit */ | |
a97b0ac8 UW |
1341 | struct regcache *regcache = get_current_regcache (); |
1342 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1343 | windows_fetch_inferior_registers (ops, regcache, | |
1344 | gdbarch_ps_regnum (gdbarch)); | |
a244bdca CF |
1345 | th->context.EFlags |= FLAG_TRACE_BIT; |
1346 | } | |
1347 | ||
1348 | if (th->context.ContextFlags) | |
1349 | { | |
1350 | if (debug_registers_changed) | |
1351 | { | |
1352 | th->context.Dr0 = dr[0]; | |
1353 | th->context.Dr1 = dr[1]; | |
1354 | th->context.Dr2 = dr[2]; | |
1355 | th->context.Dr3 = dr[3]; | |
6537bb24 | 1356 | th->context.Dr6 = DR6_CLEAR_VALUE; |
a244bdca CF |
1357 | th->context.Dr7 = dr[7]; |
1358 | } | |
1359 | CHECK (SetThreadContext (th->h, &th->context)); | |
1360 | th->context.ContextFlags = 0; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | /* Allow continuing with the same signal that interrupted us. | |
1365 | Otherwise complain. */ | |
1366 | ||
2dc38344 | 1367 | if (resume_all) |
dc05df57 | 1368 | windows_continue (continue_status, -1); |
2dc38344 | 1369 | else |
dc05df57 | 1370 | windows_continue (continue_status, ptid_get_tid (ptid)); |
a244bdca CF |
1371 | } |
1372 | ||
695de547 CF |
1373 | /* Ctrl-C handler used when the inferior is not run in the same console. The |
1374 | handler is in charge of interrupting the inferior using DebugBreakProcess. | |
1375 | Note that this function is not available prior to Windows XP. In this case | |
1376 | we emit a warning. */ | |
1377 | BOOL WINAPI | |
1378 | ctrl_c_handler (DWORD event_type) | |
1379 | { | |
1380 | const int attach_flag = current_inferior ()->attach_flag; | |
1381 | ||
bb0613a5 PM |
1382 | /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */ |
1383 | if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT) | |
695de547 CF |
1384 | return FALSE; |
1385 | ||
1386 | /* If the inferior and the debugger share the same console, do nothing as | |
1387 | the inferior has also received the Ctrl-C event. */ | |
1388 | if (!new_console && !attach_flag) | |
1389 | return TRUE; | |
1390 | ||
1391 | if (!DebugBreakProcess (current_process_handle)) | |
1392 | warning (_("\ | |
1393 | Could not interrupt program. Press Ctrl-c in the program console.")); | |
1394 | ||
1395 | /* Return true to tell that Ctrl-C has been handled. */ | |
1396 | return TRUE; | |
1397 | } | |
1398 | ||
8a892701 | 1399 | /* Get the next event from the child. Return 1 if the event requires |
695de547 | 1400 | handling by WFI (or whatever). */ |
1e37c281 | 1401 | static int |
28439f5e PA |
1402 | get_windows_debug_event (struct target_ops *ops, |
1403 | int pid, struct target_waitstatus *ourstatus) | |
1e37c281 JM |
1404 | { |
1405 | BOOL debug_event; | |
8a892701 | 1406 | DWORD continue_status, event_code; |
87a45c96 | 1407 | thread_info *th; |
8a892701 | 1408 | static thread_info dummy_thread_info; |
450005e7 | 1409 | int retval = 0; |
1e37c281 | 1410 | |
7393af7c | 1411 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 | 1412 | |
8a892701 | 1413 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1414 | goto out; |
1e37c281 JM |
1415 | |
1416 | event_count++; | |
1417 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1418 | |
8a892701 | 1419 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1420 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
87a45c96 | 1421 | th = NULL; |
a244bdca | 1422 | have_saved_context = 0; |
8a892701 CF |
1423 | |
1424 | switch (event_code) | |
1e37c281 JM |
1425 | { |
1426 | case CREATE_THREAD_DEBUG_EVENT: | |
1427 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", | |
8a892701 CF |
1428 | (unsigned) current_event.dwProcessId, |
1429 | (unsigned) current_event.dwThreadId, | |
1430 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac | 1431 | if (saw_create != 1) |
3ade5333 | 1432 | { |
181e7f93 PA |
1433 | struct inferior *inf; |
1434 | inf = find_inferior_pid (current_event.dwProcessId); | |
1435 | if (!saw_create && inf->attach_flag) | |
3ade5333 | 1436 | { |
d6dc8049 CF |
1437 | /* Kludge around a Windows bug where first event is a create |
1438 | thread event. Caused when attached process does not have | |
1439 | a main thread. */ | |
3a3e9ee3 | 1440 | retval = fake_create_process (); |
181e7f93 PA |
1441 | if (retval) |
1442 | saw_create++; | |
3ade5333 CF |
1443 | } |
1444 | break; | |
1445 | } | |
1e37c281 | 1446 | /* Record the existence of this thread */ |
450005e7 | 1447 | retval = current_event.dwThreadId; |
dc05df57 | 1448 | th = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
2dc38344 PA |
1449 | current_event.dwThreadId), |
1450 | current_event.u.CreateThread.hThread); | |
1e37c281 JM |
1451 | break; |
1452 | ||
1453 | case EXIT_THREAD_DEBUG_EVENT: | |
1c1238a5 | 1454 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1455 | (unsigned) current_event.dwProcessId, |
1456 | (unsigned) current_event.dwThreadId, | |
1457 | "EXIT_THREAD_DEBUG_EVENT")); | |
b3c613f2 | 1458 | |
87a45c96 CF |
1459 | if (current_event.dwThreadId != main_thread_id) |
1460 | { | |
dc05df57 | 1461 | windows_delete_thread (ptid_build (current_event.dwProcessId, 0, |
2dc38344 | 1462 | current_event.dwThreadId)); |
87a45c96 CF |
1463 | th = &dummy_thread_info; |
1464 | } | |
1e37c281 JM |
1465 | break; |
1466 | ||
1467 | case CREATE_PROCESS_DEBUG_EVENT: | |
1c1238a5 | 1468 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1469 | (unsigned) current_event.dwProcessId, |
1470 | (unsigned) current_event.dwThreadId, | |
1471 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1472 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1473 | if (++saw_create != 1) |
bf25528d | 1474 | break; |
1e37c281 | 1475 | |
dfe7f3ac | 1476 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
87a45c96 | 1477 | if (main_thread_id) |
695de547 CF |
1478 | windows_delete_thread (ptid_build (current_event.dwProcessId, 0, |
1479 | main_thread_id)); | |
9d3789f7 | 1480 | main_thread_id = current_event.dwThreadId; |
1e37c281 | 1481 | /* Add the main thread */ |
dc05df57 | 1482 | th = windows_add_thread (ptid_build (current_event.dwProcessId, 0, |
695de547 CF |
1483 | current_event.dwThreadId), |
1484 | current_event.u.CreateProcessInfo.hThread); | |
3a3e9ee3 | 1485 | retval = current_event.dwThreadId; |
1e37c281 JM |
1486 | break; |
1487 | ||
1488 | case EXIT_PROCESS_DEBUG_EVENT: | |
1c1238a5 | 1489 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1490 | (unsigned) current_event.dwProcessId, |
1491 | (unsigned) current_event.dwThreadId, | |
1492 | "EXIT_PROCESS_DEBUG_EVENT")); | |
16d905e2 CF |
1493 | if (!windows_initialization_done) |
1494 | { | |
1495 | target_terminal_ours (); | |
1496 | target_mourn_inferior (); | |
1497 | error (_("During startup program exited with code 0x%x."), | |
1498 | (unsigned int) current_event.u.ExitProcess.dwExitCode); | |
1499 | } | |
1500 | else if (saw_create == 1) | |
1501 | { | |
1502 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1503 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1504 | retval = main_thread_id; | |
1505 | } | |
8a892701 | 1506 | break; |
1e37c281 JM |
1507 | |
1508 | case LOAD_DLL_DEBUG_EVENT: | |
1c1238a5 | 1509 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1510 | (unsigned) current_event.dwProcessId, |
1511 | (unsigned) current_event.dwThreadId, | |
1512 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1513 | CloseHandle (current_event.u.LoadDll.hFile); |
dfe7f3ac CF |
1514 | if (saw_create != 1) |
1515 | break; | |
8a892701 | 1516 | catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL); |
450005e7 CF |
1517 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1518 | ourstatus->value.integer = 0; | |
9d3789f7 | 1519 | retval = main_thread_id; |
1e37c281 JM |
1520 | break; |
1521 | ||
1522 | case UNLOAD_DLL_DEBUG_EVENT: | |
1c1238a5 | 1523 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1524 | (unsigned) current_event.dwProcessId, |
1525 | (unsigned) current_event.dwThreadId, | |
1526 | "UNLOAD_DLL_DEBUG_EVENT")); | |
dfe7f3ac CF |
1527 | if (saw_create != 1) |
1528 | break; | |
d3ff4a77 | 1529 | catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL); |
de1b3c3d PA |
1530 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1531 | ourstatus->value.integer = 0; | |
1532 | retval = main_thread_id; | |
d3ff4a77 | 1533 | break; |
1e37c281 JM |
1534 | |
1535 | case EXCEPTION_DEBUG_EVENT: | |
1c1238a5 | 1536 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1537 | (unsigned) current_event.dwProcessId, |
1538 | (unsigned) current_event.dwThreadId, | |
1539 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1540 | if (saw_create != 1) |
1541 | break; | |
a244bdca CF |
1542 | switch (handle_exception (ourstatus)) |
1543 | { | |
1544 | case 0: | |
1545 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1546 | break; | |
1547 | case 1: | |
1548 | retval = current_event.dwThreadId; | |
1549 | break; | |
1550 | case -1: | |
1551 | last_sig = 1; | |
1552 | continue_status = -1; | |
1553 | break; | |
1554 | } | |
1e37c281 JM |
1555 | break; |
1556 | ||
8a892701 | 1557 | case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */ |
1c1238a5 | 1558 | DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n", |
8a892701 CF |
1559 | (unsigned) current_event.dwProcessId, |
1560 | (unsigned) current_event.dwThreadId, | |
1561 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1562 | if (saw_create != 1) |
1563 | break; | |
a244bdca | 1564 | retval = handle_output_debug_string (ourstatus); |
1e37c281 | 1565 | break; |
9d3789f7 | 1566 | |
1e37c281 | 1567 | default: |
dfe7f3ac CF |
1568 | if (saw_create != 1) |
1569 | break; | |
29fe111d CF |
1570 | printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n", |
1571 | (DWORD) current_event.dwProcessId, | |
1572 | (DWORD) current_event.dwThreadId); | |
1573 | printf_unfiltered (" unknown event code %ld\n", | |
1e37c281 JM |
1574 | current_event.dwDebugEventCode); |
1575 | break; | |
1576 | } | |
1577 | ||
dfe7f3ac | 1578 | if (!retval || saw_create != 1) |
a244bdca CF |
1579 | { |
1580 | if (continue_status == -1) | |
02529b48 | 1581 | windows_resume (ops, minus_one_ptid, 0, 1); |
a244bdca | 1582 | else |
dc05df57 | 1583 | CHECK (windows_continue (continue_status, -1)); |
a244bdca | 1584 | } |
450005e7 | 1585 | else |
9d3789f7 | 1586 | { |
2dc38344 PA |
1587 | inferior_ptid = ptid_build (current_event.dwProcessId, 0, |
1588 | retval); | |
3ade5333 | 1589 | current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE); |
9d3789f7 | 1590 | } |
1e37c281 JM |
1591 | |
1592 | out: | |
450005e7 | 1593 | return retval; |
1e37c281 JM |
1594 | } |
1595 | ||
2dc38344 | 1596 | /* Wait for interesting events to occur in the target process. */ |
39f77062 | 1597 | static ptid_t |
117de6a9 | 1598 | windows_wait (struct target_ops *ops, |
47608cb1 | 1599 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
24e60978 | 1600 | { |
2dc38344 | 1601 | int pid = -1; |
39f77062 | 1602 | |
c44537cf CV |
1603 | target_terminal_ours (); |
1604 | ||
24e60978 SC |
1605 | /* We loop when we get a non-standard exception rather than return |
1606 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1607 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 SC |
1608 | the birth or death of threads, which mean that the current thread |
1609 | isn't necessarily what you think it is. */ | |
1610 | ||
1611 | while (1) | |
450005e7 | 1612 | { |
c57918b2 | 1613 | int retval; |
2b008701 | 1614 | |
695de547 CF |
1615 | /* If the user presses Ctrl-c while the debugger is waiting |
1616 | for an event, he expects the debugger to interrupt his program | |
1617 | and to get the prompt back. There are two possible situations: | |
1618 | ||
1619 | - The debugger and the program do not share the console, in | |
1620 | which case the Ctrl-c event only reached the debugger. | |
1621 | In that case, the ctrl_c handler will take care of interrupting | |
1622 | the inferior. Note that this case is working starting with | |
1623 | Windows XP. For Windows 2000, Ctrl-C should be pressed in the | |
1624 | inferior console. | |
1625 | ||
1626 | - The debugger and the program share the same console, in which | |
1627 | case both debugger and inferior will receive the Ctrl-c event. | |
1628 | In that case the ctrl_c handler will ignore the event, as the | |
1629 | Ctrl-c event generated inside the inferior will trigger the | |
1630 | expected debug event. | |
1631 | ||
1632 | FIXME: brobecker/2008-05-20: If the inferior receives the | |
1633 | signal first and the delay until GDB receives that signal | |
1634 | is sufficiently long, GDB can sometimes receive the SIGINT | |
1635 | after we have unblocked the CTRL+C handler. This would | |
1636 | lead to the debugger stopping prematurely while handling | |
1637 | the new-thread event that comes with the handling of the SIGINT | |
1638 | inside the inferior, and then stop again immediately when | |
1639 | the user tries to resume the execution in the inferior. | |
1640 | This is a classic race that we should try to fix one day. */ | |
1641 | SetConsoleCtrlHandler (&ctrl_c_handler, TRUE); | |
28439f5e | 1642 | retval = get_windows_debug_event (ops, pid, ourstatus); |
695de547 | 1643 | SetConsoleCtrlHandler (&ctrl_c_handler, FALSE); |
c57918b2 | 1644 | |
450005e7 | 1645 | if (retval) |
2dc38344 | 1646 | return ptid_build (current_event.dwProcessId, 0, retval); |
450005e7 CF |
1647 | else |
1648 | { | |
1649 | int detach = 0; | |
3cee93ac | 1650 | |
98bbd631 AC |
1651 | if (deprecated_ui_loop_hook != NULL) |
1652 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1653 | |
450005e7 | 1654 | if (detach) |
7d85a9c0 | 1655 | windows_kill_inferior (ops); |
450005e7 CF |
1656 | } |
1657 | } | |
24e60978 SC |
1658 | } |
1659 | ||
9d3789f7 | 1660 | static void |
dc05df57 | 1661 | do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching) |
9d3789f7 CF |
1662 | { |
1663 | extern int stop_after_trap; | |
fa4ba8da | 1664 | int i; |
d6b48e9c | 1665 | struct inferior *inf; |
2020b7ab | 1666 | struct thread_info *tp; |
9d3789f7 | 1667 | |
7393af7c | 1668 | last_sig = TARGET_SIGNAL_0; |
9d3789f7 CF |
1669 | event_count = 0; |
1670 | exception_count = 0; | |
bf25528d | 1671 | open_process_used = 0; |
fa4ba8da | 1672 | debug_registers_changed = 0; |
dfe7f3ac | 1673 | debug_registers_used = 0; |
fa4ba8da PM |
1674 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1675 | dr[i] = 0; | |
10325bc5 | 1676 | #ifdef __CYGWIN__ |
de1b3c3d | 1677 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1678 | #endif |
9d3789f7 CF |
1679 | current_event.dwProcessId = pid; |
1680 | memset (¤t_event, 0, sizeof (current_event)); | |
0795be10 | 1681 | push_target (ops); |
cb851954 | 1682 | disable_breakpoints_in_shlibs (); |
dc05df57 | 1683 | windows_clear_solib (); |
9d3789f7 CF |
1684 | clear_proceed_status (); |
1685 | init_wait_for_inferior (); | |
1686 | ||
6c95b8df PA |
1687 | inf = current_inferior (); |
1688 | inferior_appeared (inf, pid); | |
181e7f93 | 1689 | inf->attach_flag = attaching; |
7f9f62ba | 1690 | |
9f9d052e PM |
1691 | /* Make the new process the current inferior, so terminal handling |
1692 | can rely on it. When attaching, we don't know about any thread | |
1693 | id here, but that's OK --- nothing should be referencing the | |
dc05df57 | 1694 | current thread until we report an event out of windows_wait. */ |
9f9d052e PM |
1695 | inferior_ptid = pid_to_ptid (pid); |
1696 | ||
c44537cf | 1697 | terminal_init_inferior_with_pgrp (pid); |
9d3789f7 CF |
1698 | target_terminal_inferior (); |
1699 | ||
16d905e2 | 1700 | windows_initialization_done = 0; |
d6b48e9c | 1701 | inf->stop_soon = STOP_QUIETLY; |
9d3789f7 CF |
1702 | while (1) |
1703 | { | |
1704 | stop_after_trap = 1; | |
ae123ec6 | 1705 | wait_for_inferior (0); |
2020b7ab PA |
1706 | tp = inferior_thread (); |
1707 | if (tp->stop_signal != TARGET_SIGNAL_TRAP) | |
1708 | resume (0, tp->stop_signal); | |
9d3789f7 CF |
1709 | else |
1710 | break; | |
1711 | } | |
eff8332b | 1712 | |
16d905e2 | 1713 | windows_initialization_done = 1; |
d6b48e9c | 1714 | inf->stop_soon = NO_STOP_QUIETLY; |
9d3789f7 CF |
1715 | stop_after_trap = 0; |
1716 | return; | |
1717 | } | |
1718 | ||
616a9dc4 CV |
1719 | /* Try to set or remove a user privilege to the current process. Return -1 |
1720 | if that fails, the previous setting of that privilege otherwise. | |
1721 | ||
1722 | This code is copied from the Cygwin source code and rearranged to allow | |
1723 | dynamically loading of the needed symbols from advapi32 which is only | |
1724 | available on NT/2K/XP. */ | |
1725 | static int | |
1726 | set_process_privilege (const char *privilege, BOOL enable) | |
1727 | { | |
616a9dc4 CV |
1728 | HANDLE token_hdl = NULL; |
1729 | LUID restore_priv; | |
1730 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1731 | int ret = -1; | |
1732 | DWORD size; | |
1733 | ||
616a9dc4 CV |
1734 | if (!OpenProcessToken (GetCurrentProcess (), |
1735 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1736 | &token_hdl)) | |
1737 | goto out; | |
1738 | ||
418c6cb3 | 1739 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1740 | goto out; |
1741 | ||
1742 | new_priv.PrivilegeCount = 1; | |
1743 | new_priv.Privileges[0].Luid = restore_priv; | |
1744 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1745 | ||
1746 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1747 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1748 | goto out; |
1749 | #if 0 | |
1750 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1751 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
dc05df57 | 1752 | windows_attach(). */ |
616a9dc4 CV |
1753 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
1754 | be enabled. GetLastError () returns an correct error code, though. */ | |
1755 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) | |
1756 | goto out; | |
1757 | #endif | |
1758 | ||
1759 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1760 | ||
1761 | out: | |
1762 | if (token_hdl) | |
1763 | CloseHandle (token_hdl); | |
1764 | ||
1765 | return ret; | |
1766 | } | |
1767 | ||
02cc9f49 | 1768 | /* Attach to process PID, then initialize for debugging it. */ |
24e60978 | 1769 | static void |
dc05df57 | 1770 | windows_attach (struct target_ops *ops, char *args, int from_tty) |
24e60978 SC |
1771 | { |
1772 | BOOL ok; | |
559e75c0 | 1773 | DWORD pid; |
24e60978 | 1774 | |
74164c56 | 1775 | pid = parse_pid_to_attach (args); |
24e60978 | 1776 | |
616a9dc4 CV |
1777 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1778 | { | |
1779 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
1780 | printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n"); | |
1781 | } | |
1782 | ||
dc05df57 | 1783 | windows_init_thread_list (); |
9d3789f7 | 1784 | ok = DebugActiveProcess (pid); |
91a175b3 | 1785 | saw_create = 0; |
24e60978 | 1786 | |
10325bc5 | 1787 | #ifdef __CYGWIN__ |
24e60978 | 1788 | if (!ok) |
baa93fa6 CF |
1789 | { |
1790 | /* Try fall back to Cygwin pid */ | |
1791 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); | |
1792 | ||
1793 | if (pid > 0) | |
1794 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
1795 | } |
1796 | #endif | |
baa93fa6 | 1797 | |
10325bc5 PA |
1798 | if (!ok) |
1799 | error (_("Can't attach to process.")); | |
24e60978 | 1800 | |
2b008701 | 1801 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 1802 | |
24e60978 SC |
1803 | if (from_tty) |
1804 | { | |
1805 | char *exec_file = (char *) get_exec_file (0); | |
1806 | ||
1807 | if (exec_file) | |
1808 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
39f77062 | 1809 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1810 | else |
1811 | printf_unfiltered ("Attaching to %s\n", | |
39f77062 | 1812 | target_pid_to_str (pid_to_ptid (pid))); |
24e60978 SC |
1813 | |
1814 | gdb_flush (gdb_stdout); | |
1815 | } | |
1816 | ||
dc05df57 | 1817 | do_initial_windows_stuff (ops, pid, 1); |
9d3789f7 | 1818 | target_terminal_ours (); |
24e60978 SC |
1819 | } |
1820 | ||
24e60978 | 1821 | static void |
dc05df57 | 1822 | windows_detach (struct target_ops *ops, char *args, int from_tty) |
24e60978 | 1823 | { |
02cc9f49 CV |
1824 | int detached = 1; |
1825 | ||
2b008701 CF |
1826 | ptid_t ptid = {-1}; |
1827 | windows_resume (ops, ptid, 0, TARGET_SIGNAL_0); | |
96998ce7 | 1828 | |
2b008701 CF |
1829 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
1830 | { | |
1831 | error (_("Can't detach process %lu (error %lu)"), | |
1832 | current_event.dwProcessId, GetLastError ()); | |
1833 | detached = 0; | |
02cc9f49 | 1834 | } |
2b008701 CF |
1835 | DebugSetProcessKillOnExit (FALSE); |
1836 | ||
02cc9f49 | 1837 | if (detached && from_tty) |
24e60978 SC |
1838 | { |
1839 | char *exec_file = get_exec_file (0); | |
1840 | if (exec_file == 0) | |
1841 | exec_file = ""; | |
02cc9f49 CV |
1842 | printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file, |
1843 | current_event.dwProcessId); | |
24e60978 SC |
1844 | gdb_flush (gdb_stdout); |
1845 | } | |
7f9f62ba | 1846 | |
39f77062 | 1847 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1848 | detach_inferior (current_event.dwProcessId); |
1849 | ||
0795be10 | 1850 | unpush_target (ops); |
24e60978 SC |
1851 | } |
1852 | ||
3ee6f623 | 1853 | static char * |
dc05df57 | 1854 | windows_pid_to_exec_file (int pid) |
47216e51 | 1855 | { |
b3c613f2 | 1856 | static char path[__PMAX]; |
10325bc5 | 1857 | #ifdef __CYGWIN__ |
33605d39 CF |
1858 | /* Try to find exe name as symlink target of /proc/<pid>/exe */ |
1859 | int nchars; | |
1860 | char procexe[sizeof ("/proc/4294967295/exe")]; | |
2dc38344 | 1861 | sprintf (procexe, "/proc/%u/exe", pid); |
33605d39 CF |
1862 | nchars = readlink (procexe, path, sizeof(path)); |
1863 | if (nchars > 0 && nchars < sizeof (path)) | |
47216e51 | 1864 | { |
33605d39 CF |
1865 | path[nchars] = '\0'; /* Got it */ |
1866 | return path; | |
47216e51 | 1867 | } |
10325bc5 PA |
1868 | #endif |
1869 | ||
33605d39 CF |
1870 | /* If we get here then either Cygwin is hosed, this isn't a Cygwin version |
1871 | of gdb, or we're trying to debug a non-Cygwin windows executable. */ | |
1872 | if (!get_module_name (0, path)) | |
1873 | path[0] = '\0'; | |
1874 | ||
1875 | return path; | |
47216e51 CV |
1876 | } |
1877 | ||
24e60978 SC |
1878 | /* Print status information about what we're accessing. */ |
1879 | ||
1880 | static void | |
dc05df57 | 1881 | windows_files_info (struct target_ops *ignore) |
24e60978 | 1882 | { |
181e7f93 PA |
1883 | struct inferior *inf = current_inferior (); |
1884 | ||
24e60978 | 1885 | printf_unfiltered ("\tUsing the running image of %s %s.\n", |
181e7f93 PA |
1886 | inf->attach_flag ? "attached" : "child", |
1887 | target_pid_to_str (inferior_ptid)); | |
24e60978 SC |
1888 | } |
1889 | ||
24e60978 | 1890 | static void |
dc05df57 | 1891 | windows_open (char *arg, int from_tty) |
24e60978 | 1892 | { |
8a3fe4f8 | 1893 | error (_("Use the \"run\" command to start a Unix child process.")); |
24e60978 SC |
1894 | } |
1895 | ||
dc05df57 | 1896 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
1897 | EXEC_FILE is the file to run. |
1898 | ALLARGS is a string containing the arguments to the program. | |
1899 | ENV is the environment vector to pass. Errors reported with error(). */ | |
1900 | ||
24e60978 | 1901 | static void |
dc05df57 | 1902 | windows_create_inferior (struct target_ops *ops, char *exec_file, |
136d6dae | 1903 | char *allargs, char **in_env, int from_tty) |
24e60978 | 1904 | { |
b3c613f2 | 1905 | STARTUPINFO si; |
41b4aadc | 1906 | #ifdef __CYGWIN__ |
b3c613f2 CF |
1907 | cygwin_buf_t real_path[__PMAX]; |
1908 | cygwin_buf_t shell[__PMAX]; /* Path to shell */ | |
d0d0ab16 | 1909 | const char *sh; |
b3c613f2 CF |
1910 | cygwin_buf_t *toexec; |
1911 | cygwin_buf_t *cygallargs; | |
1912 | cygwin_buf_t *args; | |
d0d0ab16 | 1913 | size_t len; |
2becadee CF |
1914 | int tty; |
1915 | int ostdin, ostdout, ostderr; | |
41b4aadc | 1916 | #else |
b3c613f2 CF |
1917 | char real_path[__PMAX]; |
1918 | char shell[__PMAX]; /* Path to shell */ | |
d0d0ab16 CV |
1919 | char *toexec; |
1920 | char *args; | |
41b4aadc CF |
1921 | HANDLE tty; |
1922 | #endif | |
d0d0ab16 CV |
1923 | PROCESS_INFORMATION pi; |
1924 | BOOL ret; | |
1925 | DWORD flags = 0; | |
3cb3b8df | 1926 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
24e60978 SC |
1927 | |
1928 | if (!exec_file) | |
8a3fe4f8 | 1929 | error (_("No executable specified, use `target exec'.")); |
24e60978 SC |
1930 | |
1931 | memset (&si, 0, sizeof (si)); | |
1932 | si.cb = sizeof (si); | |
1933 | ||
d0d0ab16 CV |
1934 | if (new_group) |
1935 | flags |= CREATE_NEW_PROCESS_GROUP; | |
1936 | ||
1937 | if (new_console) | |
1938 | flags |= CREATE_NEW_CONSOLE; | |
1939 | ||
10325bc5 | 1940 | #ifdef __CYGWIN__ |
349b409f | 1941 | if (!useshell) |
dfe7f3ac | 1942 | { |
d0d0ab16 CV |
1943 | flags |= DEBUG_ONLY_THIS_PROCESS; |
1944 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path, | |
b3c613f2 | 1945 | __PMAX * sizeof (cygwin_buf_t)) < 0) |
d0d0ab16 | 1946 | error (_("Error starting executable: %d"), errno); |
dfe7f3ac | 1947 | toexec = real_path; |
b3c613f2 | 1948 | #ifdef __USEWIDE |
d0d0ab16 CV |
1949 | len = mbstowcs (NULL, allargs, 0) + 1; |
1950 | if (len == (size_t) -1) | |
1951 | error (_("Error starting executable: %d"), errno); | |
1952 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
1953 | mbstowcs (cygallargs, allargs, len); | |
60c5c021 CF |
1954 | #else |
1955 | cygallargs = allargs; | |
b3c613f2 | 1956 | #endif |
dfe7f3ac CF |
1957 | } |
1958 | else | |
1959 | { | |
349b409f CF |
1960 | sh = getenv ("SHELL"); |
1961 | if (!sh) | |
1962 | sh = "/bin/sh"; | |
b3c613f2 | 1963 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0) |
d0d0ab16 | 1964 | error (_("Error starting executable via shell: %d"), errno); |
b3c613f2 | 1965 | #ifdef __USEWIDE |
d0d0ab16 CV |
1966 | len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0) |
1967 | + mbstowcs (NULL, allargs, 0) + 2; | |
1968 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
1969 | swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs); | |
b3c613f2 CF |
1970 | #else |
1971 | cygallargs = (char *) alloca (sizeof (" -c 'exec '") + strlen (exec_file) | |
1972 | + strlen (allargs) + 2); | |
1973 | sprintf (cygallargs, " -c 'exec %s %s'", exec_file, allargs); | |
1974 | #endif | |
dfe7f3ac | 1975 | toexec = shell; |
d0d0ab16 | 1976 | flags |= DEBUG_PROCESS; |
dfe7f3ac | 1977 | } |
b3c613f2 CF |
1978 | |
1979 | #ifdef __USEWIDE | |
1980 | args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2) | |
1981 | * sizeof (wchar_t)); | |
d0d0ab16 CV |
1982 | wcscpy (args, toexec); |
1983 | wcscat (args, L" "); | |
1984 | wcscat (args, cygallargs); | |
b3c613f2 CF |
1985 | #else |
1986 | args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2); | |
1987 | strcpy (args, toexec); | |
1988 | strcat (args, " "); | |
1989 | strcat (args, cygallargs); | |
1990 | #endif | |
1991 | ||
e88c49c3 | 1992 | /* Prepare the environment vars for CreateProcess. */ |
002c07a9 | 1993 | cygwin_internal (CW_SYNC_WINENV); |
1750a5ef | 1994 | |
2becadee CF |
1995 | if (!inferior_io_terminal) |
1996 | tty = ostdin = ostdout = ostderr = -1; | |
1997 | else | |
1998 | { | |
1999 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
2000 | if (tty < 0) | |
2001 | { | |
2002 | print_sys_errmsg (inferior_io_terminal, errno); | |
2003 | ostdin = ostdout = ostderr = -1; | |
2004 | } | |
2005 | else | |
2006 | { | |
2007 | ostdin = dup (0); | |
2008 | ostdout = dup (1); | |
2009 | ostderr = dup (2); | |
2010 | dup2 (tty, 0); | |
2011 | dup2 (tty, 1); | |
2012 | dup2 (tty, 2); | |
2013 | } | |
2014 | } | |
d0d0ab16 CV |
2015 | |
2016 | windows_init_thread_list (); | |
b3c613f2 CF |
2017 | ret = CreateProcess (0, |
2018 | args, /* command line */ | |
2019 | NULL, /* Security */ | |
2020 | NULL, /* thread */ | |
2021 | TRUE, /* inherit handles */ | |
2022 | flags, /* start flags */ | |
2023 | NULL, /* environment */ | |
2024 | NULL, /* current directory */ | |
2025 | &si, | |
2026 | &pi); | |
d0d0ab16 CV |
2027 | if (tty >= 0) |
2028 | { | |
2029 | close (tty); | |
2030 | dup2 (ostdin, 0); | |
2031 | dup2 (ostdout, 1); | |
2032 | dup2 (ostderr, 2); | |
2033 | close (ostdin); | |
2034 | close (ostdout); | |
2035 | close (ostderr); | |
2036 | } | |
41b4aadc | 2037 | #else |
b3c613f2 | 2038 | toexec = exec_file; |
d0d0ab16 CV |
2039 | args = alloca (strlen (toexec) + strlen (allargs) + 2); |
2040 | strcpy (args, toexec); | |
2041 | strcat (args, " "); | |
2042 | strcat (args, allargs); | |
2043 | ||
d0d0ab16 CV |
2044 | flags |= DEBUG_ONLY_THIS_PROCESS; |
2045 | ||
41b4aadc CF |
2046 | if (!inferior_io_terminal) |
2047 | tty = INVALID_HANDLE_VALUE; | |
2048 | else | |
2049 | { | |
2050 | SECURITY_ATTRIBUTES sa; | |
2051 | sa.nLength = sizeof(sa); | |
2052 | sa.lpSecurityDescriptor = 0; | |
2053 | sa.bInheritHandle = TRUE; | |
2054 | tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE, | |
2055 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
2056 | if (tty == INVALID_HANDLE_VALUE) | |
2057 | warning (_("Warning: Failed to open TTY %s, error %#x."), | |
2058 | inferior_io_terminal, (unsigned) GetLastError ()); | |
2059 | else | |
2060 | { | |
2061 | si.hStdInput = tty; | |
2062 | si.hStdOutput = tty; | |
2063 | si.hStdError = tty; | |
2064 | si.dwFlags |= STARTF_USESTDHANDLES; | |
2065 | } | |
2066 | } | |
2becadee | 2067 | |
dc05df57 | 2068 | windows_init_thread_list (); |
d0d0ab16 CV |
2069 | ret = CreateProcessA (0, |
2070 | args, /* command line */ | |
2071 | NULL, /* Security */ | |
2072 | NULL, /* thread */ | |
2073 | TRUE, /* inherit handles */ | |
2074 | flags, /* start flags */ | |
2075 | NULL, /* environment */ | |
2076 | NULL, /* current directory */ | |
2077 | &si, | |
2078 | &pi); | |
41b4aadc CF |
2079 | if (tty != INVALID_HANDLE_VALUE) |
2080 | CloseHandle (tty); | |
10325bc5 | 2081 | #endif |
2becadee | 2082 | |
24e60978 | 2083 | if (!ret) |
8a3fe4f8 AC |
2084 | error (_("Error creating process %s, (error %d)."), |
2085 | exec_file, (unsigned) GetLastError ()); | |
24e60978 | 2086 | |
c1766e7d PM |
2087 | CloseHandle (pi.hThread); |
2088 | CloseHandle (pi.hProcess); | |
2089 | ||
dfe7f3ac CF |
2090 | if (useshell && shell[0] != '\0') |
2091 | saw_create = -1; | |
2092 | else | |
2093 | saw_create = 0; | |
2094 | ||
dc05df57 | 2095 | do_initial_windows_stuff (ops, pi.dwProcessId, 0); |
d3a09475 | 2096 | |
dc05df57 | 2097 | /* windows_continue (DBG_CONTINUE, -1); */ |
24e60978 SC |
2098 | } |
2099 | ||
2100 | static void | |
dc05df57 | 2101 | windows_mourn_inferior (struct target_ops *ops) |
24e60978 | 2102 | { |
dc05df57 | 2103 | (void) windows_continue (DBG_CONTINUE, -1); |
fa4ba8da | 2104 | i386_cleanup_dregs(); |
bf25528d CF |
2105 | if (open_process_used) |
2106 | { | |
2107 | CHECK (CloseHandle (current_process_handle)); | |
2108 | open_process_used = 0; | |
2109 | } | |
0795be10 | 2110 | unpush_target (ops); |
24e60978 SC |
2111 | generic_mourn_inferior (); |
2112 | } | |
2113 | ||
24e60978 SC |
2114 | /* Send a SIGINT to the process group. This acts just like the user typed a |
2115 | ^C on the controlling terminal. */ | |
2116 | ||
b607efe7 | 2117 | static void |
dc05df57 | 2118 | windows_stop (ptid_t ptid) |
24e60978 | 2119 | { |
1ef980b9 | 2120 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 2121 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 2122 | registers_changed (); /* refresh register state */ |
24e60978 SC |
2123 | } |
2124 | ||
3ee6f623 | 2125 | static int |
dc05df57 | 2126 | windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len, |
0a65a603 AC |
2127 | int write, struct mem_attrib *mem, |
2128 | struct target_ops *target) | |
24e60978 | 2129 | { |
5732a500 | 2130 | SIZE_T done = 0; |
24e60978 SC |
2131 | if (write) |
2132 | { | |
29fe111d | 2133 | DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", |
2c647436 | 2134 | len, (DWORD) (uintptr_t) memaddr)); |
2b008701 | 2135 | if (!WriteProcessMemory (current_process_handle, |
2c647436 | 2136 | (LPVOID) (uintptr_t) memaddr, our, |
6f17862b CF |
2137 | len, &done)) |
2138 | done = 0; | |
2b008701 | 2139 | FlushInstructionCache (current_process_handle, |
2c647436 | 2140 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
2141 | } |
2142 | else | |
2143 | { | |
29fe111d | 2144 | DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", |
2c647436 | 2145 | len, (DWORD) (uintptr_t) memaddr)); |
2b008701 | 2146 | if (!ReadProcessMemory (current_process_handle, |
2c647436 | 2147 | (LPCVOID) (uintptr_t) memaddr, our, |
6f17862b CF |
2148 | len, &done)) |
2149 | done = 0; | |
24e60978 SC |
2150 | } |
2151 | return done; | |
2152 | } | |
2153 | ||
3ee6f623 | 2154 | static void |
7d85a9c0 | 2155 | windows_kill_inferior (struct target_ops *ops) |
24e60978 | 2156 | { |
3cee93ac CF |
2157 | CHECK (TerminateProcess (current_process_handle, 0)); |
2158 | ||
b5edcb45 ILT |
2159 | for (;;) |
2160 | { | |
dc05df57 | 2161 | if (!windows_continue (DBG_CONTINUE, -1)) |
b5edcb45 | 2162 | break; |
3cee93ac | 2163 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 2164 | break; |
3cee93ac | 2165 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
2166 | break; |
2167 | } | |
2168 | ||
dc05df57 | 2169 | target_mourn_inferior (); /* or just windows_mourn_inferior? */ |
24e60978 SC |
2170 | } |
2171 | ||
24e60978 | 2172 | static void |
dc05df57 | 2173 | windows_prepare_to_store (struct regcache *regcache) |
24e60978 SC |
2174 | { |
2175 | /* Do nothing, since we can store individual regs */ | |
2176 | } | |
2177 | ||
2178 | static int | |
dc05df57 | 2179 | windows_can_run (void) |
24e60978 SC |
2180 | { |
2181 | return 1; | |
2182 | } | |
2183 | ||
2184 | static void | |
dc05df57 | 2185 | windows_close (int x) |
24e60978 | 2186 | { |
dc05df57 | 2187 | DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n", |
3bccec63 | 2188 | PIDGET (inferior_ptid))); |
24e60978 | 2189 | } |
1ef980b9 | 2190 | |
3ee6f623 CF |
2191 | /* Convert pid to printable format. */ |
2192 | static char * | |
117de6a9 | 2193 | windows_pid_to_str (struct target_ops *ops, ptid_t ptid) |
24e60978 | 2194 | { |
3ee6f623 | 2195 | static char buf[80]; |
3ee6f623 | 2196 | |
2dc38344 PA |
2197 | if (ptid_get_tid (ptid) != 0) |
2198 | { | |
2199 | snprintf (buf, sizeof (buf), "Thread %d.0x%lx", | |
2200 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
2201 | return buf; | |
2202 | } | |
2203 | ||
2204 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2205 | } |
2206 | ||
de1b3c3d | 2207 | static LONGEST |
dc05df57 | 2208 | windows_xfer_shared_libraries (struct target_ops *ops, |
de1b3c3d PA |
2209 | enum target_object object, const char *annex, |
2210 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2211 | ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2212 | { |
de1b3c3d PA |
2213 | struct obstack obstack; |
2214 | const char *buf; | |
2215 | LONGEST len_avail; | |
3cb8e7f6 | 2216 | struct so_list *so; |
3cb8e7f6 | 2217 | |
de1b3c3d PA |
2218 | if (writebuf) |
2219 | return -1; | |
3cb8e7f6 | 2220 | |
de1b3c3d PA |
2221 | obstack_init (&obstack); |
2222 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2223 | for (so = solib_start.next; so; so = so->next) | |
dc05df57 | 2224 | windows_xfer_shared_library (so->so_name, (CORE_ADDR) (uintptr_t) so->lm_info->load_addr, |
5af949e3 | 2225 | target_gdbarch, &obstack); |
de1b3c3d | 2226 | obstack_grow_str0 (&obstack, "</library-list>\n"); |
3cb8e7f6 | 2227 | |
de1b3c3d PA |
2228 | buf = obstack_finish (&obstack); |
2229 | len_avail = strlen (buf); | |
2230 | if (offset >= len_avail) | |
2231 | return 0; | |
3cb8e7f6 | 2232 | |
de1b3c3d PA |
2233 | if (len > len_avail - offset) |
2234 | len = len_avail - offset; | |
2235 | memcpy (readbuf, buf + offset, len); | |
3cb8e7f6 | 2236 | |
de1b3c3d PA |
2237 | obstack_free (&obstack, NULL); |
2238 | return len; | |
3cb8e7f6 CF |
2239 | } |
2240 | ||
de1b3c3d | 2241 | static LONGEST |
dc05df57 | 2242 | windows_xfer_partial (struct target_ops *ops, enum target_object object, |
de1b3c3d PA |
2243 | const char *annex, gdb_byte *readbuf, |
2244 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
3cb8e7f6 | 2245 | { |
de1b3c3d | 2246 | switch (object) |
3cb8e7f6 | 2247 | { |
de1b3c3d PA |
2248 | case TARGET_OBJECT_MEMORY: |
2249 | if (readbuf) | |
2250 | return (*ops->deprecated_xfer_memory) (offset, readbuf, | |
244e85c8 | 2251 | len, 0/*read*/, NULL, ops); |
de1b3c3d PA |
2252 | if (writebuf) |
2253 | return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf, | |
2254 | len, 1/*write*/, NULL, ops); | |
2255 | return -1; | |
2256 | ||
2257 | case TARGET_OBJECT_LIBRARIES: | |
dc05df57 | 2258 | return windows_xfer_shared_libraries (ops, object, annex, readbuf, |
de1b3c3d | 2259 | writebuf, offset, len); |
3929abe9 | 2260 | |
de1b3c3d PA |
2261 | default: |
2262 | if (ops->beneath != NULL) | |
2263 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
2264 | readbuf, writebuf, offset, len); | |
2265 | return -1; | |
3929abe9 | 2266 | } |
02c5aecd CF |
2267 | } |
2268 | ||
1e2f1c5c JB |
2269 | static ptid_t |
2270 | windows_get_ada_task_ptid (long lwp, long thread) | |
2271 | { | |
2272 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2273 | } | |
2274 | ||
3ee6f623 | 2275 | static void |
dc05df57 | 2276 | init_windows_ops (void) |
3ee6f623 | 2277 | { |
dc05df57 CF |
2278 | windows_ops.to_shortname = "child"; |
2279 | windows_ops.to_longname = "Win32 child process"; | |
2280 | windows_ops.to_doc = "Win32 child process (started by the \"run\" command)."; | |
2281 | windows_ops.to_open = windows_open; | |
2282 | windows_ops.to_close = windows_close; | |
2283 | windows_ops.to_attach = windows_attach; | |
2284 | windows_ops.to_attach_no_wait = 1; | |
2285 | windows_ops.to_detach = windows_detach; | |
2286 | windows_ops.to_resume = windows_resume; | |
2287 | windows_ops.to_wait = windows_wait; | |
2288 | windows_ops.to_fetch_registers = windows_fetch_inferior_registers; | |
2289 | windows_ops.to_store_registers = windows_store_inferior_registers; | |
2290 | windows_ops.to_prepare_to_store = windows_prepare_to_store; | |
2291 | windows_ops.deprecated_xfer_memory = windows_xfer_memory; | |
2292 | windows_ops.to_xfer_partial = windows_xfer_partial; | |
2293 | windows_ops.to_files_info = windows_files_info; | |
2294 | windows_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
2295 | windows_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
2296 | windows_ops.to_terminal_init = terminal_init_inferior; | |
2297 | windows_ops.to_terminal_inferior = terminal_inferior; | |
2298 | windows_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
2299 | windows_ops.to_terminal_ours = terminal_ours; | |
2300 | windows_ops.to_terminal_save_ours = terminal_save_ours; | |
2301 | windows_ops.to_terminal_info = child_terminal_info; | |
2302 | windows_ops.to_kill = windows_kill_inferior; | |
2303 | windows_ops.to_create_inferior = windows_create_inferior; | |
2304 | windows_ops.to_mourn_inferior = windows_mourn_inferior; | |
2305 | windows_ops.to_can_run = windows_can_run; | |
2306 | windows_ops.to_thread_alive = windows_thread_alive; | |
2307 | windows_ops.to_pid_to_str = windows_pid_to_str; | |
2308 | windows_ops.to_stop = windows_stop; | |
2309 | windows_ops.to_stratum = process_stratum; | |
c35b1492 PA |
2310 | windows_ops.to_has_all_memory = default_child_has_all_memory; |
2311 | windows_ops.to_has_memory = default_child_has_memory; | |
2312 | windows_ops.to_has_stack = default_child_has_stack; | |
2313 | windows_ops.to_has_registers = default_child_has_registers; | |
2314 | windows_ops.to_has_execution = default_child_has_execution; | |
dc05df57 | 2315 | windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file; |
1e2f1c5c | 2316 | windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid; |
9bb9e8ad | 2317 | |
5aca5a82 PM |
2318 | i386_use_watchpoints (&windows_ops); |
2319 | ||
9bb9e8ad PM |
2320 | i386_dr_low.set_control = cygwin_set_dr7; |
2321 | i386_dr_low.set_addr = cygwin_set_dr; | |
2322 | i386_dr_low.reset_addr = NULL; | |
2323 | i386_dr_low.get_status = cygwin_get_dr6; | |
2324 | ||
2325 | /* i386_dr_low.debug_register_length field is set by | |
2326 | calling i386_set_debug_register_length function | |
2327 | in processor windows specific native file. */ | |
2328 | ||
dc05df57 | 2329 | windows_ops.to_magic = OPS_MAGIC; |
c719b714 | 2330 | } |
24e60978 | 2331 | |
3929abe9 | 2332 | static void |
dc05df57 | 2333 | set_windows_aliases (char *argv0) |
3929abe9 CF |
2334 | { |
2335 | add_info_alias ("dll", "sharedlibrary", 1); | |
2336 | } | |
2337 | ||
24e60978 | 2338 | void |
dc05df57 | 2339 | _initialize_windows_nat (void) |
24e60978 | 2340 | { |
fa58ee11 EZ |
2341 | struct cmd_list_element *c; |
2342 | ||
dc05df57 | 2343 | init_windows_ops (); |
1ef980b9 | 2344 | |
d0d0ab16 CV |
2345 | #ifdef __CYGWIN__ |
2346 | cygwin_internal (CW_SET_DOS_FILE_WARNING, 0); | |
2347 | #endif | |
2348 | ||
fa58ee11 | 2349 | c = add_com ("dll-symbols", class_files, dll_symbol_command, |
1bedd215 | 2350 | _("Load dll library symbols from FILE.")); |
5ba2abeb | 2351 | set_cmd_completer (c, filename_completer); |
450005e7 CF |
2352 | |
2353 | add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1); | |
2354 | ||
70992597 PM |
2355 | add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1); |
2356 | ||
2357 | add_com_alias ("assf", "dll-symbols", class_alias, 1); | |
2358 | ||
10325bc5 | 2359 | #ifdef __CYGWIN__ |
5bf193a2 AC |
2360 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
2361 | Set use of shell to start subprocess."), _("\ | |
2362 | Show use of shell to start subprocess."), NULL, | |
2363 | NULL, | |
2364 | NULL, /* FIXME: i18n: */ | |
2365 | &setlist, &showlist); | |
2366 | ||
09280ddf CF |
2367 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\ |
2368 | Break when an exception is detected in the Cygwin DLL itself."), _("\ | |
2369 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
2370 | NULL, | |
2371 | NULL, /* FIXME: i18n: */ | |
2372 | &setlist, &showlist); | |
10325bc5 | 2373 | #endif |
09280ddf | 2374 | |
5bf193a2 AC |
2375 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
2376 | Set creation of new console when creating child process."), _("\ | |
2377 | Show creation of new console when creating child process."), NULL, | |
2378 | NULL, | |
2379 | NULL, /* FIXME: i18n: */ | |
2380 | &setlist, &showlist); | |
2381 | ||
2382 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
2383 | Set creation of new group when creating child process."), _("\ | |
2384 | Show creation of new group when creating child process."), NULL, | |
2385 | NULL, | |
2386 | NULL, /* FIXME: i18n: */ | |
2387 | &setlist, &showlist); | |
2388 | ||
2389 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
2390 | Set whether to display execution in child process."), _("\ | |
2391 | Show whether to display execution in child process."), NULL, | |
2392 | NULL, | |
2393 | NULL, /* FIXME: i18n: */ | |
2394 | &setlist, &showlist); | |
2395 | ||
2396 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
2397 | Set whether to display kernel events in child process."), _("\ | |
2398 | Show whether to display kernel events in child process."), NULL, | |
2399 | NULL, | |
2400 | NULL, /* FIXME: i18n: */ | |
2401 | &setlist, &showlist); | |
2402 | ||
2403 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
2404 | Set whether to display memory accesses in child process."), _("\ | |
2405 | Show whether to display memory accesses in child process."), NULL, | |
2406 | NULL, | |
2407 | NULL, /* FIXME: i18n: */ | |
2408 | &setlist, &showlist); | |
2409 | ||
2410 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
2411 | &debug_exceptions, _("\ | |
2412 | Set whether to display kernel exceptions in child process."), _("\ | |
2413 | Show whether to display kernel exceptions in child process."), NULL, | |
2414 | NULL, | |
2415 | NULL, /* FIXME: i18n: */ | |
2416 | &setlist, &showlist); | |
1ef980b9 | 2417 | |
c1748f97 | 2418 | add_prefix_cmd ("w32", class_info, info_w32_command, |
1bedd215 | 2419 | _("Print information specific to Win32 debugging."), |
baa93fa6 | 2420 | &info_w32_cmdlist, "info w32 ", 0, &infolist); |
c1748f97 PM |
2421 | |
2422 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 2423 | _("Display selectors infos."), |
c1748f97 | 2424 | &info_w32_cmdlist); |
dc05df57 CF |
2425 | add_target (&windows_ops); |
2426 | deprecated_init_ui_hook = set_windows_aliases; | |
24e60978 | 2427 | } |
3cee93ac | 2428 | |
fa4ba8da PM |
2429 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
2430 | ||
2431 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
2432 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 2433 | actually set up when windows_continue is called. */ |
9bb9e8ad | 2434 | static void |
fa4ba8da PM |
2435 | cygwin_set_dr (int i, CORE_ADDR addr) |
2436 | { | |
2437 | if (i < 0 || i > 3) | |
2438 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2439 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
41b4aadc | 2440 | dr[i] = addr; |
fa4ba8da PM |
2441 | debug_registers_changed = 1; |
2442 | debug_registers_used = 1; | |
2443 | } | |
2444 | ||
2445 | /* Pass the value VAL to the inferior in the DR7 debug control | |
2446 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 2447 | will be actually set up in windows_wait. */ |
9bb9e8ad PM |
2448 | static void |
2449 | cygwin_set_dr7 (unsigned long val) | |
fa4ba8da | 2450 | { |
9bb9e8ad | 2451 | dr[7] = (CORE_ADDR) val; |
fa4ba8da PM |
2452 | debug_registers_changed = 1; |
2453 | debug_registers_used = 1; | |
2454 | } | |
2455 | ||
2456 | /* Get the value of the DR6 debug status register from the inferior. | |
2457 | Here we just return the value stored in dr[6] | |
2458 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
9bb9e8ad | 2459 | static unsigned long |
fa4ba8da PM |
2460 | cygwin_get_dr6 (void) |
2461 | { | |
9bb9e8ad | 2462 | return (unsigned long) dr[6]; |
fa4ba8da PM |
2463 | } |
2464 | ||
2dc38344 | 2465 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 2466 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
2dc38344 | 2467 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
3cee93ac | 2468 | static int |
28439f5e | 2469 | windows_thread_alive (struct target_ops *ops, ptid_t ptid) |
3cee93ac | 2470 | { |
2dc38344 PA |
2471 | int tid; |
2472 | ||
2473 | gdb_assert (ptid_get_tid (ptid) != 0); | |
2474 | tid = ptid_get_tid (ptid); | |
39f77062 | 2475 | |
2dc38344 | 2476 | return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ? |
3a4b77d8 | 2477 | FALSE : TRUE; |
3cee93ac CF |
2478 | } |
2479 | ||
2a3d5645 CF |
2480 | void |
2481 | _initialize_check_for_gdb_ini (void) | |
2482 | { | |
2483 | char *homedir; | |
2484 | if (inhibit_gdbinit) | |
2485 | return; | |
2486 | ||
2487 | homedir = getenv ("HOME"); | |
2488 | if (homedir) | |
2489 | { | |
2490 | char *p; | |
2491 | char *oldini = (char *) alloca (strlen (homedir) + | |
2492 | sizeof ("/gdb.ini")); | |
2493 | strcpy (oldini, homedir); | |
2494 | p = strchr (oldini, '\0'); | |
2495 | if (p > oldini && p[-1] != '/') | |
2496 | *p++ = '/'; | |
2497 | strcpy (p, "gdb.ini"); | |
2498 | if (access (oldini, 0) == 0) | |
2499 | { | |
2500 | int len = strlen (oldini); | |
2501 | char *newini = alloca (len + 1); | |
dfe7f3ac | 2502 | sprintf (newini, "%.*s.gdbinit", |
58fa08f0 | 2503 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 2504 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
2505 | } |
2506 | } | |
2507 | } | |
33605d39 | 2508 | |
2b008701 CF |
2509 | /* Define dummy functions which always return error for the rare cases where |
2510 | these functions could not be found. */ | |
2511 | static BOOL WINAPI | |
2512 | bad_DebugActiveProcessStop (DWORD w) | |
2513 | { | |
2514 | return FALSE; | |
2515 | } | |
2516 | static BOOL WINAPI | |
2517 | bad_DebugBreakProcess (HANDLE w) | |
2518 | { | |
2519 | return FALSE; | |
2520 | } | |
2521 | static BOOL WINAPI | |
2522 | bad_DebugSetProcessKillOnExit (BOOL w) | |
2523 | { | |
2524 | return FALSE; | |
2525 | } | |
2526 | static BOOL WINAPI | |
2527 | bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z) | |
2528 | { | |
2529 | return FALSE; | |
2530 | } | |
b3c613f2 CF |
2531 | |
2532 | #ifdef __USEWIDE | |
2b008701 | 2533 | static DWORD WINAPI |
b3c613f2 | 2534 | bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z) |
2b008701 CF |
2535 | { |
2536 | return 0; | |
2537 | } | |
d0d0ab16 CV |
2538 | #else |
2539 | static DWORD WINAPI | |
b3c613f2 | 2540 | bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z) |
d0d0ab16 CV |
2541 | { |
2542 | return 0; | |
2543 | } | |
2544 | #endif | |
b3c613f2 | 2545 | |
2b008701 CF |
2546 | static BOOL WINAPI |
2547 | bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z) | |
2548 | { | |
2549 | return FALSE; | |
2550 | } | |
2551 | ||
418c6cb3 CF |
2552 | static BOOL WINAPI |
2553 | bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y) | |
2554 | { | |
2555 | return FALSE; | |
2556 | } | |
2557 | ||
2b008701 CF |
2558 | /* Load any functions which may not be available in ancient versions |
2559 | of Windows. */ | |
33605d39 | 2560 | void |
2b008701 | 2561 | _initialize_loadable (void) |
33605d39 | 2562 | { |
2b008701 CF |
2563 | HMODULE hm = NULL; |
2564 | ||
2565 | hm = LoadLibrary ("kernel32.dll"); | |
2566 | if (hm) | |
33605d39 | 2567 | { |
b3c613f2 | 2568 | DebugActiveProcessStop = (void *) |
2b008701 | 2569 | GetProcAddress (hm, "DebugActiveProcessStop"); |
b3c613f2 | 2570 | DebugBreakProcess = (void *) |
2b008701 | 2571 | GetProcAddress (hm, "DebugBreakProcess"); |
b3c613f2 | 2572 | DebugSetProcessKillOnExit = (void *) |
2b008701 CF |
2573 | GetProcAddress (hm, "DebugSetProcessKillOnExit"); |
2574 | } | |
33605d39 | 2575 | |
2b008701 CF |
2576 | /* Set variables to dummy versions of these processes if the function |
2577 | wasn't found in kernel32.dll. */ | |
b3c613f2 CF |
2578 | if (!DebugBreakProcess) |
2579 | DebugBreakProcess = bad_DebugBreakProcess; | |
2580 | if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit) | |
2b008701 | 2581 | { |
b3c613f2 CF |
2582 | DebugActiveProcessStop = bad_DebugActiveProcessStop; |
2583 | DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit; | |
2b008701 | 2584 | } |
33605d39 | 2585 | |
2b008701 CF |
2586 | /* Load optional functions used for retrieving filename information |
2587 | associated with the currently debugged process or its dlls. */ | |
2588 | hm = LoadLibrary ("psapi.dll"); | |
2589 | if (hm) | |
2590 | { | |
b3c613f2 | 2591 | EnumProcessModules = (void *) |
2b008701 | 2592 | GetProcAddress (hm, "EnumProcessModules"); |
b3c613f2 | 2593 | GetModuleInformation = (void *) |
2b008701 | 2594 | GetProcAddress (hm, "GetModuleInformation"); |
b3c613f2 CF |
2595 | GetModuleFileNameEx = (void *) |
2596 | GetProcAddress (hm, GetModuleFileNameEx_name); | |
33605d39 CF |
2597 | } |
2598 | ||
b3c613f2 | 2599 | if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx) |
2b008701 CF |
2600 | { |
2601 | /* Set variables to dummy versions of these processes if the function | |
2602 | wasn't found in psapi.dll. */ | |
b3c613f2 CF |
2603 | EnumProcessModules = bad_EnumProcessModules; |
2604 | GetModuleInformation = bad_GetModuleInformation; | |
2605 | GetModuleFileNameEx = bad_GetModuleFileNameEx; | |
2b008701 CF |
2606 | /* This will probably fail on Windows 9x/Me. Let the user know that we're |
2607 | missing some functionality. */ | |
418c6cb3 CF |
2608 | warning(_("cannot automatically find executable file or library to read symbols.\nUse \"file\" or \"dll\" command to load executable/libraries directly.")); |
2609 | } | |
2610 | ||
2611 | hm = LoadLibrary ("advapi32.dll"); | |
2612 | if (hm) | |
2613 | { | |
b3c613f2 CF |
2614 | OpenProcessToken = (void *) GetProcAddress (hm, "OpenProcessToken"); |
2615 | LookupPrivilegeValueA = (void *) | |
418c6cb3 | 2616 | GetProcAddress (hm, "LookupPrivilegeValueA"); |
b3c613f2 | 2617 | AdjustTokenPrivileges = (void *) |
418c6cb3 CF |
2618 | GetProcAddress (hm, "AdjustTokenPrivileges"); |
2619 | /* Only need to set one of these since if OpenProcessToken fails nothing | |
2620 | else is needed. */ | |
b3c613f2 CF |
2621 | if (!OpenProcessToken || !LookupPrivilegeValueA || !AdjustTokenPrivileges) |
2622 | OpenProcessToken = bad_OpenProcessToken; | |
2b008701 | 2623 | } |
33605d39 | 2624 | } |