Commit | Line | Data |
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dc05df57 | 1 | /* Target-vector operations for controlling windows child processes, for GDB. |
0a65a603 | 2 | |
42a4f53d | 3 | Copyright (C) 1995-2019 Free Software Foundation, Inc. |
0a65a603 | 4 | |
e6433c28 | 5 | Contributed by Cygnus Solutions, A Red Hat Company. |
e88c49c3 | 6 | |
24e60978 SC |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
24e60978 SC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
a9762ec7 | 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
24e60978 SC |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
24e60978 | 21 | |
dfe7f3ac | 22 | /* Originally by Steve Chamberlain, sac@cygnus.com */ |
24e60978 SC |
23 | |
24 | #include "defs.h" | |
25 | #include "frame.h" /* required by inferior.h */ | |
26 | #include "inferior.h" | |
45741a9c | 27 | #include "infrun.h" |
24e60978 | 28 | #include "target.h" |
24e60978 SC |
29 | #include "gdbcore.h" |
30 | #include "command.h" | |
fa58ee11 | 31 | #include "completer.h" |
4e052eda | 32 | #include "regcache.h" |
2a3d5645 | 33 | #include "top.h" |
403d9909 CF |
34 | #include <signal.h> |
35 | #include <sys/types.h> | |
36 | #include <fcntl.h> | |
403d9909 CF |
37 | #include <windows.h> |
38 | #include <imagehlp.h> | |
2b008701 | 39 | #include <psapi.h> |
10325bc5 | 40 | #ifdef __CYGWIN__ |
b7ff339d | 41 | #include <wchar.h> |
403d9909 | 42 | #include <sys/cygwin.h> |
b7ff339d | 43 | #include <cygwin/version.h> |
10325bc5 | 44 | #endif |
a1b85d28 | 45 | #include <algorithm> |
cad9cd60 | 46 | |
0ba1096a | 47 | #include "filenames.h" |
1ef980b9 SC |
48 | #include "symfile.h" |
49 | #include "objfiles.h" | |
92107356 | 50 | #include "gdb_bfd.h" |
de1b3c3d | 51 | #include "gdb_obstack.h" |
fdfa3315 | 52 | #include "gdbthread.h" |
24e60978 | 53 | #include "gdbcmd.h" |
1e37c281 | 54 | #include <unistd.h> |
4646aa9d | 55 | #include "exec.h" |
3ee6f623 | 56 | #include "solist.h" |
3cb8e7f6 | 57 | #include "solib.h" |
de1b3c3d | 58 | #include "xml-support.h" |
463888ab | 59 | #include "inttypes.h" |
24e60978 | 60 | |
6c7de422 MK |
61 | #include "i386-tdep.h" |
62 | #include "i387-tdep.h" | |
63 | ||
31b060a2 CF |
64 | #include "windows-tdep.h" |
65 | #include "windows-nat.h" | |
df7e5265 | 66 | #include "x86-nat.h" |
ecc13e53 | 67 | #include "complaints.h" |
51a9c8c5 | 68 | #include "inf-child.h" |
268a13a5 TT |
69 | #include "gdbsupport/gdb_tilde_expand.h" |
70 | #include "gdbsupport/pathstuff.h" | |
de1b3c3d | 71 | |
418c6cb3 | 72 | #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges |
2b008701 CF |
73 | #define DebugActiveProcessStop dyn_DebugActiveProcessStop |
74 | #define DebugBreakProcess dyn_DebugBreakProcess | |
75 | #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit | |
76 | #define EnumProcessModules dyn_EnumProcessModules | |
2b008701 | 77 | #define GetModuleInformation dyn_GetModuleInformation |
418c6cb3 CF |
78 | #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA |
79 | #define OpenProcessToken dyn_OpenProcessToken | |
cd44747c PM |
80 | #define GetConsoleFontSize dyn_GetConsoleFontSize |
81 | #define GetCurrentConsoleFont dyn_GetCurrentConsoleFont | |
2b008701 | 82 | |
43499ea3 PA |
83 | typedef BOOL WINAPI (AdjustTokenPrivileges_ftype) (HANDLE, BOOL, |
84 | PTOKEN_PRIVILEGES, | |
85 | DWORD, PTOKEN_PRIVILEGES, | |
86 | PDWORD); | |
87 | static AdjustTokenPrivileges_ftype *AdjustTokenPrivileges; | |
88 | ||
89 | typedef BOOL WINAPI (DebugActiveProcessStop_ftype) (DWORD); | |
90 | static DebugActiveProcessStop_ftype *DebugActiveProcessStop; | |
91 | ||
92 | typedef BOOL WINAPI (DebugBreakProcess_ftype) (HANDLE); | |
93 | static DebugBreakProcess_ftype *DebugBreakProcess; | |
94 | ||
95 | typedef BOOL WINAPI (DebugSetProcessKillOnExit_ftype) (BOOL); | |
96 | static DebugSetProcessKillOnExit_ftype *DebugSetProcessKillOnExit; | |
97 | ||
98 | typedef BOOL WINAPI (EnumProcessModules_ftype) (HANDLE, HMODULE *, DWORD, | |
99 | LPDWORD); | |
100 | static EnumProcessModules_ftype *EnumProcessModules; | |
101 | ||
102 | typedef BOOL WINAPI (GetModuleInformation_ftype) (HANDLE, HMODULE, | |
103 | LPMODULEINFO, DWORD); | |
104 | static GetModuleInformation_ftype *GetModuleInformation; | |
105 | ||
106 | typedef BOOL WINAPI (LookupPrivilegeValueA_ftype) (LPCSTR, LPCSTR, PLUID); | |
107 | static LookupPrivilegeValueA_ftype *LookupPrivilegeValueA; | |
108 | ||
109 | typedef BOOL WINAPI (OpenProcessToken_ftype) (HANDLE, DWORD, PHANDLE); | |
110 | static OpenProcessToken_ftype *OpenProcessToken; | |
111 | ||
112 | typedef BOOL WINAPI (GetCurrentConsoleFont_ftype) (HANDLE, BOOL, | |
113 | CONSOLE_FONT_INFO *); | |
114 | static GetCurrentConsoleFont_ftype *GetCurrentConsoleFont; | |
115 | ||
116 | typedef COORD WINAPI (GetConsoleFontSize_ftype) (HANDLE, DWORD); | |
117 | static GetConsoleFontSize_ftype *GetConsoleFontSize; | |
2b008701 | 118 | |
b3c613f2 CF |
119 | #undef STARTUPINFO |
120 | #undef CreateProcess | |
121 | #undef GetModuleFileNameEx | |
122 | ||
123 | #ifndef __CYGWIN__ | |
124 | # define __PMAX (MAX_PATH + 1) | |
43499ea3 PA |
125 | typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, LPSTR, DWORD); |
126 | static GetModuleFileNameEx_ftype *GetModuleFileNameEx; | |
b3c613f2 CF |
127 | # define STARTUPINFO STARTUPINFOA |
128 | # define CreateProcess CreateProcessA | |
129 | # define GetModuleFileNameEx_name "GetModuleFileNameExA" | |
130 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA | |
131 | #else | |
132 | # define __PMAX PATH_MAX | |
581e13c1 | 133 | /* The starting and ending address of the cygwin1.dll text segment. */ |
b3c613f2 CF |
134 | static CORE_ADDR cygwin_load_start; |
135 | static CORE_ADDR cygwin_load_end; | |
b3c613f2 CF |
136 | # define __USEWIDE |
137 | typedef wchar_t cygwin_buf_t; | |
43499ea3 PA |
138 | typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, |
139 | LPWSTR, DWORD); | |
140 | static GetModuleFileNameEx_ftype *GetModuleFileNameEx; | |
b3c613f2 CF |
141 | # define STARTUPINFO STARTUPINFOW |
142 | # define CreateProcess CreateProcessW | |
143 | # define GetModuleFileNameEx_name "GetModuleFileNameExW" | |
144 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW | |
10325bc5 | 145 | #endif |
a244bdca | 146 | |
581e13c1 MS |
147 | static int have_saved_context; /* True if we've saved context from a |
148 | cygwin signal. */ | |
15766370 | 149 | #ifdef __CYGWIN__ |
85102364 | 150 | static CONTEXT saved_context; /* Contains the saved context from a |
581e13c1 | 151 | cygwin signal. */ |
15766370 | 152 | #endif |
a244bdca | 153 | |
0714f9bf SS |
154 | /* If we're not using the old Cygwin header file set, define the |
155 | following which never should have been in the generic Win32 API | |
581e13c1 | 156 | headers in the first place since they were our own invention... */ |
0714f9bf | 157 | #ifndef _GNU_H_WINDOWS_H |
9d3789f7 | 158 | enum |
8e860359 CF |
159 | { |
160 | FLAG_TRACE_BIT = 0x100, | |
8e860359 | 161 | }; |
0714f9bf SS |
162 | #endif |
163 | ||
5851ab76 JB |
164 | #ifndef CONTEXT_EXTENDED_REGISTERS |
165 | /* This macro is only defined on ia32. It only makes sense on this target, | |
166 | so define it as zero if not already defined. */ | |
167 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
168 | #endif | |
169 | ||
f0666312 JT |
170 | #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \ |
171 | | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \ | |
172 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 173 | |
41b4aadc | 174 | static uintptr_t dr[8]; |
87a45c96 CF |
175 | static int debug_registers_changed; |
176 | static int debug_registers_used; | |
16d905e2 CF |
177 | |
178 | static int windows_initialization_done; | |
6537bb24 | 179 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 180 | |
24cdb46e РИ |
181 | /* The exception thrown by a program to tell the debugger the name of |
182 | a thread. The exception record contains an ID of a thread and a | |
183 | name to give it. This exception has no documented name, but MSDN | |
184 | dubs it "MS_VC_EXCEPTION" in one code example. */ | |
185 | #define MS_VC_EXCEPTION 0x406d1388 | |
186 | ||
187 | typedef enum | |
188 | { | |
189 | HANDLE_EXCEPTION_UNHANDLED = 0, | |
190 | HANDLE_EXCEPTION_HANDLED, | |
191 | HANDLE_EXCEPTION_IGNORED | |
192 | } handle_exception_result; | |
193 | ||
3cee93ac | 194 | /* The string sent by cygwin when it processes a signal. |
581e13c1 | 195 | FIXME: This should be in a cygwin include file. */ |
3929abe9 CF |
196 | #ifndef _CYGWIN_SIGNAL_STRING |
197 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
198 | #endif | |
3cee93ac | 199 | |
29fe111d | 200 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 201 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
202 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
203 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
204 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 | 205 | |
9bb9e8ad PM |
206 | static void cygwin_set_dr (int i, CORE_ADDR addr); |
207 | static void cygwin_set_dr7 (unsigned long val); | |
a961bc18 | 208 | static CORE_ADDR cygwin_get_dr (int i); |
9bb9e8ad | 209 | static unsigned long cygwin_get_dr6 (void); |
a961bc18 | 210 | static unsigned long cygwin_get_dr7 (void); |
9bb9e8ad | 211 | |
a493e3e2 | 212 | static enum gdb_signal last_sig = GDB_SIGNAL_0; |
581e13c1 | 213 | /* Set if a signal was received from the debugged process. */ |
7393af7c | 214 | |
3cee93ac | 215 | /* Thread information structure used to track information that is |
6537bb24 | 216 | not available in gdb's thread structure. */ |
876d1cd7 | 217 | typedef struct windows_thread_info_struct |
3a4b77d8 | 218 | { |
876d1cd7 | 219 | struct windows_thread_info_struct *next; |
3a4b77d8 JM |
220 | DWORD id; |
221 | HANDLE h; | |
711e434b | 222 | CORE_ADDR thread_local_base; |
3a4b77d8 | 223 | char *name; |
6537bb24 | 224 | int suspended; |
3ade5333 | 225 | int reload_context; |
3a4b77d8 | 226 | CONTEXT context; |
8e860359 | 227 | } |
876d1cd7 | 228 | windows_thread_info; |
1e37c281 | 229 | |
876d1cd7 | 230 | static windows_thread_info thread_head; |
24e60978 | 231 | |
581e13c1 | 232 | /* The process and thread handles for the above context. */ |
24e60978 | 233 | |
3cee93ac CF |
234 | static DEBUG_EVENT current_event; /* The current debug event from |
235 | WaitForDebugEvent */ | |
236 | static HANDLE current_process_handle; /* Currently executing process */ | |
876d1cd7 | 237 | static windows_thread_info *current_thread; /* Info on currently selected thread */ |
24e60978 | 238 | |
581e13c1 | 239 | /* Counts of things. */ |
24e60978 SC |
240 | static int exception_count = 0; |
241 | static int event_count = 0; | |
dfe7f3ac | 242 | static int saw_create; |
bf25528d | 243 | static int open_process_used = 0; |
24e60978 | 244 | |
581e13c1 | 245 | /* User options. */ |
491144b5 | 246 | static bool new_console = false; |
10325bc5 | 247 | #ifdef __CYGWIN__ |
491144b5 | 248 | static bool cygwin_exceptions = false; |
10325bc5 | 249 | #endif |
491144b5 CB |
250 | static bool new_group = true; |
251 | static bool debug_exec = false; /* show execution */ | |
252 | static bool debug_events = false; /* show events from kernel */ | |
253 | static bool debug_memory = false; /* show target memory accesses */ | |
254 | static bool debug_exceptions = false; /* show target exceptions */ | |
255 | static bool useshell = false; /* use shell for subprocesses */ | |
dfe7f3ac | 256 | |
7e63b4e4 | 257 | /* This vector maps GDB's idea of a register's number into an offset |
dc05df57 | 258 | in the windows exception context vector. |
24e60978 | 259 | |
3cee93ac | 260 | It also contains the bit mask needed to load the register in question. |
24e60978 | 261 | |
7e63b4e4 JB |
262 | The contents of this table can only be computed by the units |
263 | that provide CPU-specific support for Windows native debugging. | |
264 | These units should set the table by calling | |
dc05df57 | 265 | windows_set_context_register_offsets. |
7e63b4e4 | 266 | |
24e60978 SC |
267 | One day we could read a reg, we could inspect the context we |
268 | already have loaded, if it doesn't have the bit set that we need, | |
269 | we read that set of registers in using GetThreadContext. If the | |
581e13c1 | 270 | context already contains what we need, we just unpack it. Then to |
24e60978 SC |
271 | write a register, first we have to ensure that the context contains |
272 | the other regs of the group, and then we copy the info in and set | |
581e13c1 | 273 | out bit. */ |
24e60978 | 274 | |
7e63b4e4 | 275 | static const int *mappings; |
d3a09475 | 276 | |
d40dc7a8 JB |
277 | /* The function to use in order to determine whether a register is |
278 | a segment register or not. */ | |
279 | static segment_register_p_ftype *segment_register_p; | |
280 | ||
73c13fe6 TT |
281 | /* See windows_nat_target::resume to understand why this is commented |
282 | out. */ | |
283 | #if 0 | |
24e60978 | 284 | /* This vector maps the target's idea of an exception (extracted |
581e13c1 | 285 | from the DEBUG_EVENT structure) to GDB's idea. */ |
24e60978 SC |
286 | |
287 | struct xlate_exception | |
288 | { | |
73c13fe6 | 289 | DWORD them; |
2ea28649 | 290 | enum gdb_signal us; |
24e60978 SC |
291 | }; |
292 | ||
73c13fe6 | 293 | static const struct xlate_exception xlate[] = |
24e60978 | 294 | { |
a493e3e2 PA |
295 | {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV}, |
296 | {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV}, | |
297 | {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP}, | |
298 | {DBG_CONTROL_C, GDB_SIGNAL_INT}, | |
299 | {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP}, | |
73c13fe6 TT |
300 | {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE} |
301 | }; | |
24e60978 | 302 | |
73c13fe6 | 303 | #endif /* 0 */ |
f6ac5f3d PA |
304 | |
305 | struct windows_nat_target final : public x86_nat_target<inf_child_target> | |
306 | { | |
307 | void close () override; | |
308 | ||
309 | void attach (const char *, int) override; | |
310 | ||
311 | bool attach_no_wait () override | |
312 | { return true; } | |
313 | ||
314 | void detach (inferior *, int) override; | |
315 | ||
316 | void resume (ptid_t, int , enum gdb_signal) override; | |
317 | ||
318 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
319 | ||
320 | void fetch_registers (struct regcache *, int) override; | |
321 | void store_registers (struct regcache *, int) override; | |
322 | ||
323 | enum target_xfer_status xfer_partial (enum target_object object, | |
324 | const char *annex, | |
325 | gdb_byte *readbuf, | |
326 | const gdb_byte *writebuf, | |
327 | ULONGEST offset, ULONGEST len, | |
328 | ULONGEST *xfered_len) override; | |
329 | ||
330 | void files_info () override; | |
331 | ||
332 | void kill () override; | |
333 | ||
334 | void create_inferior (const char *, const std::string &, | |
335 | char **, int) override; | |
336 | ||
337 | void mourn_inferior () override; | |
338 | ||
57810aa7 | 339 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d | 340 | |
a068643d | 341 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
342 | |
343 | void interrupt () override; | |
344 | ||
345 | char *pid_to_exec_file (int pid) override; | |
346 | ||
347 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
348 | ||
57810aa7 | 349 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
350 | |
351 | const char *thread_name (struct thread_info *) override; | |
352 | }; | |
353 | ||
354 | static windows_nat_target the_windows_nat_target; | |
355 | ||
7e63b4e4 JB |
356 | /* Set the MAPPINGS static global to OFFSETS. |
357 | See the description of MAPPINGS for more details. */ | |
358 | ||
359 | void | |
dc05df57 | 360 | windows_set_context_register_offsets (const int *offsets) |
7e63b4e4 JB |
361 | { |
362 | mappings = offsets; | |
363 | } | |
364 | ||
d40dc7a8 JB |
365 | /* See windows-nat.h. */ |
366 | ||
367 | void | |
368 | windows_set_segment_register_p (segment_register_p_ftype *fun) | |
369 | { | |
370 | segment_register_p = fun; | |
371 | } | |
372 | ||
fa4ba8da PM |
373 | static void |
374 | check (BOOL ok, const char *file, int line) | |
375 | { | |
376 | if (!ok) | |
d50a0ce2 CV |
377 | printf_filtered ("error return %s:%d was %u\n", file, line, |
378 | (unsigned) GetLastError ()); | |
fa4ba8da PM |
379 | } |
380 | ||
6537bb24 PA |
381 | /* Find a thread record given a thread id. If GET_CONTEXT is not 0, |
382 | then also retrieve the context for this thread. If GET_CONTEXT is | |
383 | negative, then don't suspend the thread. */ | |
876d1cd7 | 384 | static windows_thread_info * |
3cee93ac | 385 | thread_rec (DWORD id, int get_context) |
24e60978 | 386 | { |
876d1cd7 | 387 | windows_thread_info *th; |
3cee93ac | 388 | |
3a4b77d8 | 389 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
390 | if (th->id == id) |
391 | { | |
6537bb24 | 392 | if (!th->suspended && get_context) |
3cee93ac | 393 | { |
8a892701 | 394 | if (get_context > 0 && id != current_event.dwThreadId) |
6537bb24 PA |
395 | { |
396 | if (SuspendThread (th->h) == (DWORD) -1) | |
397 | { | |
398 | DWORD err = GetLastError (); | |
22128028 | 399 | |
17617f2d EZ |
400 | /* We get Access Denied (5) when trying to suspend |
401 | threads that Windows started on behalf of the | |
402 | debuggee, usually when those threads are just | |
5d9c55d3 JT |
403 | about to exit. |
404 | We can get Invalid Handle (6) if the main thread | |
405 | has exited. */ | |
406 | if (err != ERROR_INVALID_HANDLE | |
407 | && err != ERROR_ACCESS_DENIED) | |
17617f2d EZ |
408 | warning (_("SuspendThread (tid=0x%x) failed." |
409 | " (winerr %u)"), | |
410 | (unsigned) id, (unsigned) err); | |
411 | th->suspended = -1; | |
6537bb24 | 412 | } |
17617f2d EZ |
413 | else |
414 | th->suspended = 1; | |
6537bb24 | 415 | } |
3cee93ac | 416 | else if (get_context < 0) |
6537bb24 | 417 | th->suspended = -1; |
3ade5333 | 418 | th->reload_context = 1; |
3cee93ac CF |
419 | } |
420 | return th; | |
421 | } | |
422 | ||
423 | return NULL; | |
424 | } | |
425 | ||
c559d709 JB |
426 | /* Add a thread to the thread list. |
427 | ||
428 | PTID is the ptid of the thread to be added. | |
429 | H is its Windows handle. | |
430 | TLB is its thread local base. | |
431 | MAIN_THREAD_P should be true if the thread to be added is | |
432 | the main thread, false otherwise. */ | |
433 | ||
876d1cd7 | 434 | static windows_thread_info * |
c559d709 | 435 | windows_add_thread (ptid_t ptid, HANDLE h, void *tlb, bool main_thread_p) |
3cee93ac | 436 | { |
876d1cd7 | 437 | windows_thread_info *th; |
2dc38344 PA |
438 | DWORD id; |
439 | ||
cc6bcb54 | 440 | gdb_assert (ptid.tid () != 0); |
2dc38344 | 441 | |
cc6bcb54 | 442 | id = ptid.tid (); |
3cee93ac CF |
443 | |
444 | if ((th = thread_rec (id, FALSE))) | |
445 | return th; | |
446 | ||
876d1cd7 | 447 | th = XCNEW (windows_thread_info); |
3cee93ac CF |
448 | th->id = id; |
449 | th->h = h; | |
711e434b | 450 | th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb; |
3cee93ac CF |
451 | th->next = thread_head.next; |
452 | thread_head.next = th; | |
c559d709 JB |
453 | |
454 | /* Add this new thread to the list of threads. | |
455 | ||
456 | To be consistent with what's done on other platforms, we add | |
457 | the main thread silently (in reality, this thread is really | |
458 | more of a process to the user than a thread). */ | |
459 | if (main_thread_p) | |
460 | add_thread_silent (ptid); | |
461 | else | |
462 | add_thread (ptid); | |
463 | ||
2dc38344 | 464 | /* Set the debug registers for the new thread if they are used. */ |
fa4ba8da PM |
465 | if (debug_registers_used) |
466 | { | |
467 | /* Only change the value of the debug registers. */ | |
468 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
469 | CHECK (GetThreadContext (th->h, &th->context)); | |
470 | th->context.Dr0 = dr[0]; | |
471 | th->context.Dr1 = dr[1]; | |
472 | th->context.Dr2 = dr[2]; | |
473 | th->context.Dr3 = dr[3]; | |
6537bb24 | 474 | th->context.Dr6 = DR6_CLEAR_VALUE; |
fa4ba8da PM |
475 | th->context.Dr7 = dr[7]; |
476 | CHECK (SetThreadContext (th->h, &th->context)); | |
477 | th->context.ContextFlags = 0; | |
478 | } | |
3cee93ac | 479 | return th; |
24e60978 SC |
480 | } |
481 | ||
26c4b26f | 482 | /* Clear out any old thread list and reinitialize it to a |
581e13c1 | 483 | pristine state. */ |
24e60978 | 484 | static void |
dc05df57 | 485 | windows_init_thread_list (void) |
24e60978 | 486 | { |
876d1cd7 | 487 | windows_thread_info *th = &thread_head; |
3cee93ac | 488 | |
dc05df57 | 489 | DEBUG_EVENTS (("gdb: windows_init_thread_list\n")); |
3cee93ac CF |
490 | init_thread_list (); |
491 | while (th->next != NULL) | |
24e60978 | 492 | { |
876d1cd7 | 493 | windows_thread_info *here = th->next; |
3cee93ac | 494 | th->next = here->next; |
b8c9b27d | 495 | xfree (here); |
24e60978 | 496 | } |
059198c1 | 497 | thread_head.next = NULL; |
3cee93ac CF |
498 | } |
499 | ||
c559d709 JB |
500 | /* Delete a thread from the list of threads. |
501 | ||
502 | PTID is the ptid of the thread to be deleted. | |
503 | EXIT_CODE is the thread's exit code. | |
504 | MAIN_THREAD_P should be true if the thread to be deleted is | |
505 | the main thread, false otherwise. */ | |
506 | ||
3cee93ac | 507 | static void |
c559d709 | 508 | windows_delete_thread (ptid_t ptid, DWORD exit_code, bool main_thread_p) |
3cee93ac | 509 | { |
876d1cd7 | 510 | windows_thread_info *th; |
2dc38344 PA |
511 | DWORD id; |
512 | ||
cc6bcb54 | 513 | gdb_assert (ptid.tid () != 0); |
2dc38344 | 514 | |
cc6bcb54 | 515 | id = ptid.tid (); |
3cee93ac | 516 | |
c559d709 JB |
517 | /* Emit a notification about the thread being deleted. |
518 | ||
519 | Note that no notification was printed when the main thread | |
520 | was created, and thus, unless in verbose mode, we should be | |
85102364 | 521 | symmetrical, and avoid that notification for the main thread |
c559d709 JB |
522 | here as well. */ |
523 | ||
3cee93ac | 524 | if (info_verbose) |
a068643d | 525 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ()); |
c559d709 | 526 | else if (print_thread_events && !main_thread_p) |
e0ea48a0 | 527 | printf_unfiltered (_("[%s exited with code %u]\n"), |
a068643d TT |
528 | target_pid_to_str (ptid).c_str (), |
529 | (unsigned) exit_code); | |
c559d709 | 530 | |
b7a08269 | 531 | delete_thread (find_thread_ptid (ptid)); |
3cee93ac CF |
532 | |
533 | for (th = &thread_head; | |
534 | th->next != NULL && th->next->id != id; | |
535 | th = th->next) | |
536 | continue; | |
537 | ||
538 | if (th->next != NULL) | |
24e60978 | 539 | { |
876d1cd7 | 540 | windows_thread_info *here = th->next; |
3cee93ac | 541 | th->next = here->next; |
24cdb46e | 542 | xfree (here->name); |
b8c9b27d | 543 | xfree (here); |
24e60978 SC |
544 | } |
545 | } | |
546 | ||
9a325b7b JB |
547 | /* Fetches register number R from the given windows_thread_info, |
548 | and supplies its value to the given regcache. | |
549 | ||
550 | This function assumes that R is non-negative. A failed assertion | |
551 | is raised if that is not true. | |
552 | ||
553 | This function assumes that TH->RELOAD_CONTEXT is not set, meaning | |
554 | that the windows_thread_info has an up-to-date context. A failed | |
555 | assertion is raised if that assumption is violated. */ | |
556 | ||
3cee93ac | 557 | static void |
9a325b7b JB |
558 | windows_fetch_one_register (struct regcache *regcache, |
559 | windows_thread_info *th, int r) | |
24e60978 | 560 | { |
9a325b7b JB |
561 | gdb_assert (r >= 0); |
562 | gdb_assert (!th->reload_context); | |
563 | ||
3de88e9a | 564 | char *context_offset = ((char *) &th->context) + mappings[r]; |
ac7936df | 565 | struct gdbarch *gdbarch = regcache->arch (); |
20a6ec49 | 566 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
9a325b7b JB |
567 | |
568 | if (r == I387_FISEG_REGNUM (tdep)) | |
569 | { | |
570 | long l = *((long *) context_offset) & 0xffff; | |
571 | regcache->raw_supply (r, (char *) &l); | |
572 | } | |
573 | else if (r == I387_FOP_REGNUM (tdep)) | |
574 | { | |
575 | long l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); | |
576 | regcache->raw_supply (r, (char *) &l); | |
577 | } | |
578 | else if (segment_register_p (r)) | |
579 | { | |
580 | /* GDB treats segment registers as 32bit registers, but they are | |
581 | in fact only 16 bits long. Make sure we do not read extra | |
582 | bits from our source buffer. */ | |
583 | long l = *((long *) context_offset) & 0xffff; | |
584 | regcache->raw_supply (r, (char *) &l); | |
585 | } | |
586 | else | |
587 | regcache->raw_supply (r, context_offset); | |
588 | } | |
589 | ||
590 | void | |
591 | windows_nat_target::fetch_registers (struct regcache *regcache, int r) | |
592 | { | |
96b49c5e TT |
593 | DWORD tid = regcache->ptid ().tid (); |
594 | windows_thread_info *th = thread_rec (tid, TRUE); | |
9a325b7b JB |
595 | |
596 | /* Check if TH exists. Windows sometimes uses a non-existent | |
597 | thread id in its events. */ | |
598 | if (th == NULL) | |
599 | return; | |
6c7de422 | 600 | |
3de88e9a | 601 | if (th->reload_context) |
3ade5333 | 602 | { |
f20c58f5 | 603 | #ifdef __CYGWIN__ |
a244bdca CF |
604 | if (have_saved_context) |
605 | { | |
581e13c1 MS |
606 | /* Lie about where the program actually is stopped since |
607 | cygwin has informed us that we should consider the signal | |
608 | to have occurred at another location which is stored in | |
609 | "saved_context. */ | |
3de88e9a | 610 | memcpy (&th->context, &saved_context, |
581e13c1 | 611 | __COPY_CONTEXT_SIZE); |
a244bdca CF |
612 | have_saved_context = 0; |
613 | } | |
614 | else | |
cb832706 | 615 | #endif |
a244bdca | 616 | { |
a244bdca | 617 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
17617f2d | 618 | CHECK (GetThreadContext (th->h, &th->context)); |
2b008701 | 619 | /* Copy dr values from that thread. |
581e13c1 MS |
620 | But only if there were not modified since last stop. |
621 | PR gdb/2388 */ | |
88616312 PM |
622 | if (!debug_registers_changed) |
623 | { | |
624 | dr[0] = th->context.Dr0; | |
625 | dr[1] = th->context.Dr1; | |
626 | dr[2] = th->context.Dr2; | |
627 | dr[3] = th->context.Dr3; | |
628 | dr[6] = th->context.Dr6; | |
629 | dr[7] = th->context.Dr7; | |
630 | } | |
a244bdca | 631 | } |
3de88e9a | 632 | th->reload_context = 0; |
3ade5333 CF |
633 | } |
634 | ||
9a325b7b JB |
635 | if (r < 0) |
636 | for (r = 0; r < gdbarch_num_regs (regcache->arch()); r++) | |
637 | windows_fetch_one_register (regcache, th, r); | |
3cee93ac | 638 | else |
9a325b7b | 639 | windows_fetch_one_register (regcache, th, r); |
3cee93ac CF |
640 | } |
641 | ||
9a325b7b JB |
642 | /* Collect the register number R from the given regcache, and store |
643 | its value into the corresponding area of the given thread's context. | |
3de88e9a | 644 | |
9a325b7b JB |
645 | This function assumes that R is non-negative. A failed assertion |
646 | assertion is raised if that is not true. */ | |
3cee93ac CF |
647 | |
648 | static void | |
9a325b7b JB |
649 | windows_store_one_register (const struct regcache *regcache, |
650 | windows_thread_info *th, int r) | |
3cee93ac | 651 | { |
9a325b7b JB |
652 | gdb_assert (r >= 0); |
653 | ||
654 | regcache->raw_collect (r, ((char *) &th->context) + mappings[r]); | |
24e60978 SC |
655 | } |
656 | ||
3de88e9a SM |
657 | /* Store a new register value into the context of the thread tied to |
658 | REGCACHE. */ | |
f6ac5f3d PA |
659 | |
660 | void | |
661 | windows_nat_target::store_registers (struct regcache *regcache, int r) | |
3cee93ac | 662 | { |
96b49c5e TT |
663 | DWORD tid = regcache->ptid ().tid (); |
664 | windows_thread_info *th = thread_rec (tid, TRUE); | |
3de88e9a SM |
665 | |
666 | /* Check if TH exists. Windows sometimes uses a non-existent | |
581e13c1 | 667 | thread id in its events. */ |
9a325b7b JB |
668 | if (th == NULL) |
669 | return; | |
670 | ||
671 | if (r < 0) | |
672 | for (r = 0; r < gdbarch_num_regs (regcache->arch ()); r++) | |
673 | windows_store_one_register (regcache, th, r); | |
674 | else | |
675 | windows_store_one_register (regcache, th, r); | |
3cee93ac | 676 | } |
24e60978 | 677 | |
581e13c1 | 678 | /* Maintain a linked list of "so" information. */ |
d0e449a1 | 679 | struct lm_info_windows : public lm_info_base |
02e423b9 | 680 | { |
f8fdb78e | 681 | LPVOID load_addr = 0; |
3ee6f623 CF |
682 | }; |
683 | ||
684 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 685 | |
de1b3c3d | 686 | static struct so_list * |
dc05df57 | 687 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 688 | { |
3ee6f623 | 689 | struct so_list *so; |
d0d0ab16 CV |
690 | char *p; |
691 | #ifndef __CYGWIN__ | |
b3c613f2 CF |
692 | char buf[__PMAX]; |
693 | char cwd[__PMAX]; | |
3f8ad85b CF |
694 | WIN32_FIND_DATA w32_fd; |
695 | HANDLE h = FindFirstFile(name, &w32_fd); | |
3f8ad85b | 696 | |
6badb179 CF |
697 | if (h == INVALID_HANDLE_VALUE) |
698 | strcpy (buf, name); | |
699 | else | |
3f8ad85b | 700 | { |
c914e0cc CF |
701 | FindClose (h); |
702 | strcpy (buf, name); | |
703 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
704 | { | |
705 | p = strrchr (buf, '\\'); | |
706 | if (p) | |
707 | p[1] = '\0'; | |
708 | SetCurrentDirectory (buf); | |
709 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
710 | SetCurrentDirectory (cwd); | |
711 | } | |
3f8ad85b | 712 | } |
3ee6f623 CF |
713 | if (strcasecmp (buf, "ntdll.dll") == 0) |
714 | { | |
715 | GetSystemDirectory (buf, sizeof (buf)); | |
716 | strcat (buf, "\\ntdll.dll"); | |
717 | } | |
d0d0ab16 | 718 | #else |
b3c613f2 | 719 | cygwin_buf_t buf[__PMAX]; |
d0d0ab16 | 720 | |
b3c613f2 | 721 | buf[0] = 0; |
d0d0ab16 CV |
722 | if (access (name, F_OK) != 0) |
723 | { | |
724 | if (strcasecmp (name, "ntdll.dll") == 0) | |
b3c613f2 | 725 | #ifdef __USEWIDE |
d0d0ab16 CV |
726 | { |
727 | GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t)); | |
728 | wcscat (buf, L"\\ntdll.dll"); | |
729 | } | |
b3c613f2 CF |
730 | #else |
731 | { | |
732 | GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t)); | |
733 | strcat (buf, "\\ntdll.dll"); | |
734 | } | |
735 | #endif | |
d0d0ab16 CV |
736 | } |
737 | #endif | |
41bf6aca | 738 | so = XCNEW (struct so_list); |
f8fdb78e | 739 | lm_info_windows *li = new lm_info_windows; |
d0e449a1 SM |
740 | so->lm_info = li; |
741 | li->load_addr = load_addr; | |
de1b3c3d | 742 | strcpy (so->so_original_name, name); |
10325bc5 PA |
743 | #ifndef __CYGWIN__ |
744 | strcpy (so->so_name, buf); | |
745 | #else | |
d0d0ab16 CV |
746 | if (buf[0]) |
747 | cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name, | |
748 | SO_NAME_MAX_PATH_SIZE); | |
749 | else | |
750 | { | |
60c5c021 | 751 | char *rname = realpath (name, NULL); |
d0d0ab16 CV |
752 | if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE) |
753 | { | |
754 | strcpy (so->so_name, rname); | |
755 | free (rname); | |
756 | } | |
757 | else | |
758 | error (_("dll path too long")); | |
759 | } | |
de1b3c3d PA |
760 | /* Record cygwin1.dll .text start/end. */ |
761 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
762 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
763 | { | |
de1b3c3d | 764 | asection *text = NULL; |
8e860359 | 765 | |
192b62ce | 766 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->so_name, "pei-i386", -1)); |
a244bdca | 767 | |
192b62ce | 768 | if (abfd == NULL) |
de1b3c3d PA |
769 | return so; |
770 | ||
192b62ce TT |
771 | if (bfd_check_format (abfd.get (), bfd_object)) |
772 | text = bfd_get_section_by_name (abfd.get (), ".text"); | |
de1b3c3d PA |
773 | |
774 | if (!text) | |
192b62ce | 775 | return so; |
de1b3c3d | 776 | |
7a9dd1b2 | 777 | /* The symbols in a dll are offset by 0x1000, which is the |
de1b3c3d | 778 | offset from 0 of the first byte in an image - because of the |
581e13c1 MS |
779 | file header and the section alignment. */ |
780 | cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) | |
781 | load_addr + 0x1000); | |
fd361982 | 782 | cygwin_load_end = cygwin_load_start + bfd_section_size (text); |
de1b3c3d | 783 | } |
10325bc5 | 784 | #endif |
de1b3c3d PA |
785 | |
786 | return so; | |
8e860359 CF |
787 | } |
788 | ||
3ee6f623 | 789 | static char * |
dfe7f3ac CF |
790 | get_image_name (HANDLE h, void *address, int unicode) |
791 | { | |
d0d0ab16 | 792 | #ifdef __CYGWIN__ |
b3c613f2 | 793 | static char buf[__PMAX]; |
d0d0ab16 | 794 | #else |
b3c613f2 | 795 | static char buf[(2 * __PMAX) + 1]; |
d0d0ab16 | 796 | #endif |
dfe7f3ac CF |
797 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); |
798 | char *address_ptr; | |
799 | int len = 0; | |
800 | char b[2]; | |
5732a500 | 801 | SIZE_T done; |
dfe7f3ac CF |
802 | |
803 | /* Attempt to read the name of the dll that was detected. | |
804 | This is documented to work only when actively debugging | |
581e13c1 | 805 | a program. It will not work for attached processes. */ |
dfe7f3ac CF |
806 | if (address == NULL) |
807 | return NULL; | |
808 | ||
dfe7f3ac | 809 | /* See if we could read the address of a string, and that the |
581e13c1 MS |
810 | address isn't null. */ |
811 | if (!ReadProcessMemory (h, address, &address_ptr, | |
812 | sizeof (address_ptr), &done) | |
6f17862b | 813 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
814 | return NULL; |
815 | ||
581e13c1 | 816 | /* Find the length of the string. */ |
6f17862b CF |
817 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
818 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
819 | continue; | |
dfe7f3ac CF |
820 | |
821 | if (!unicode) | |
822 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
823 | else | |
824 | { | |
825 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
826 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
827 | &done); | |
d0d0ab16 | 828 | #ifdef __CYGWIN__ |
b3c613f2 | 829 | wcstombs (buf, unicode_address, __PMAX); |
d0d0ab16 CV |
830 | #else |
831 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf, | |
832 | 0, 0); | |
833 | #endif | |
dfe7f3ac CF |
834 | } |
835 | ||
836 | return buf; | |
837 | } | |
838 | ||
1cd9feab JB |
839 | /* Handle a DLL load event, and return 1. |
840 | ||
841 | This function assumes that this event did not occur during inferior | |
842 | initialization, where their event info may be incomplete (see | |
843 | do_initial_windows_stuff and windows_add_all_dlls for more info | |
844 | on how we handle DLL loading during that phase). */ | |
845 | ||
bf469271 PA |
846 | static void |
847 | handle_load_dll () | |
24e60978 | 848 | { |
3a4b77d8 | 849 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
1cd9feab | 850 | char *dll_name; |
24e60978 | 851 | |
94481b8c JB |
852 | /* Try getting the DLL name via the lpImageName field of the event. |
853 | Note that Microsoft documents this fields as strictly optional, | |
854 | in the sense that it might be NULL. And the first DLL event in | |
855 | particular is explicitly documented as "likely not pass[ed]" | |
856 | (source: MSDN LOAD_DLL_DEBUG_INFO structure). */ | |
1cd9feab JB |
857 | dll_name = get_image_name (current_process_handle, |
858 | event->lpImageName, event->fUnicode); | |
3cee93ac | 859 | if (!dll_name) |
bf469271 | 860 | return; |
3cee93ac | 861 | |
dc05df57 | 862 | solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll); |
de1b3c3d | 863 | solib_end = solib_end->next; |
450005e7 | 864 | |
d0e449a1 SM |
865 | lm_info_windows *li = (lm_info_windows *) solib_end->lm_info; |
866 | ||
a74ce742 | 867 | DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name, |
d0e449a1 | 868 | host_address_to_string (li->load_addr))); |
450005e7 CF |
869 | } |
870 | ||
3ee6f623 | 871 | static void |
dc05df57 | 872 | windows_free_so (struct so_list *so) |
3ee6f623 | 873 | { |
f8fdb78e SM |
874 | lm_info_windows *li = (lm_info_windows *) so->lm_info; |
875 | ||
876 | delete li; | |
de1b3c3d | 877 | xfree (so); |
3cb8e7f6 CF |
878 | } |
879 | ||
3be75f87 JB |
880 | /* Handle a DLL unload event. |
881 | Return 1 if successful, or zero otherwise. | |
882 | ||
883 | This function assumes that this event did not occur during inferior | |
884 | initialization, where their event info may be incomplete (see | |
885 | do_initial_windows_stuff and windows_add_all_dlls for more info | |
886 | on how we handle DLL loading during that phase). */ | |
887 | ||
bf469271 PA |
888 | static void |
889 | handle_unload_dll () | |
d3ff4a77 | 890 | { |
d3653bf6 | 891 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 892 | struct so_list *so; |
d3ff4a77 CF |
893 | |
894 | for (so = &solib_start; so->next != NULL; so = so->next) | |
d0e449a1 SM |
895 | { |
896 | lm_info_windows *li_next = (lm_info_windows *) so->next->lm_info; | |
a25cd31f | 897 | |
d0e449a1 SM |
898 | if (li_next->load_addr == lpBaseOfDll) |
899 | { | |
900 | struct so_list *sodel = so->next; | |
7488902c | 901 | |
d0e449a1 SM |
902 | so->next = sodel->next; |
903 | if (!so->next) | |
904 | solib_end = so; | |
905 | DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name)); | |
906 | ||
907 | windows_free_so (sodel); | |
bf469271 | 908 | return; |
d0e449a1 SM |
909 | } |
910 | } | |
3929abe9 | 911 | |
ecc13e53 JB |
912 | /* We did not find any DLL that was previously loaded at this address, |
913 | so register a complaint. We do not report an error, because we have | |
914 | observed that this may be happening under some circumstances. For | |
915 | instance, running 32bit applications on x64 Windows causes us to receive | |
916 | 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these | |
917 | events are apparently caused by the WOW layer, the interface between | |
918 | 32bit and 64bit worlds). */ | |
b98664d3 | 919 | complaint (_("dll starting at %s not found."), |
ecc13e53 | 920 | host_address_to_string (lpBaseOfDll)); |
bf469271 PA |
921 | } |
922 | ||
923 | /* Call FUNC wrapped in a TRY/CATCH that swallows all GDB | |
924 | exceptions. */ | |
d3ff4a77 | 925 | |
bf469271 PA |
926 | static void |
927 | catch_errors (void (*func) ()) | |
928 | { | |
a70b8144 | 929 | try |
bf469271 PA |
930 | { |
931 | func (); | |
932 | } | |
230d2906 | 933 | catch (const gdb_exception &ex) |
bf469271 PA |
934 | { |
935 | exception_print (gdb_stderr, ex); | |
936 | } | |
d3ff4a77 CF |
937 | } |
938 | ||
581e13c1 | 939 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 940 | static void |
dc05df57 | 941 | windows_clear_solib (void) |
450005e7 | 942 | { |
450005e7 CF |
943 | solib_start.next = NULL; |
944 | solib_end = &solib_start; | |
450005e7 | 945 | } |
295732ea | 946 | |
463888ab | 947 | static void |
0b39b52e | 948 | signal_event_command (const char *args, int from_tty) |
463888ab РИ |
949 | { |
950 | uintptr_t event_id = 0; | |
951 | char *endargs = NULL; | |
952 | ||
953 | if (args == NULL) | |
954 | error (_("signal-event requires an argument (integer event id)")); | |
955 | ||
956 | event_id = strtoumax (args, &endargs, 10); | |
957 | ||
958 | if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) || | |
959 | ((HANDLE) event_id == INVALID_HANDLE_VALUE)) | |
960 | error (_("Failed to convert `%s' to event id"), args); | |
961 | ||
962 | SetEvent ((HANDLE) event_id); | |
963 | CloseHandle ((HANDLE) event_id); | |
964 | } | |
965 | ||
3cee93ac CF |
966 | /* Handle DEBUG_STRING output from child process. |
967 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
581e13c1 | 968 | a Cygwin signal. Otherwise just print the string as a warning. */ |
3cee93ac CF |
969 | static int |
970 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
971 | { | |
e83e4e24 | 972 | gdb::unique_xmalloc_ptr<char> s; |
a244bdca | 973 | int retval = 0; |
3cee93ac CF |
974 | |
975 | if (!target_read_string | |
2c647436 | 976 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, |
e83e4e24 TT |
977 | &s, 1024, 0) |
978 | || !s || !*(s.get ())) | |
a244bdca | 979 | /* nothing to do */; |
e83e4e24 | 980 | else if (!startswith (s.get (), _CYGWIN_SIGNAL_STRING)) |
3cee93ac | 981 | { |
10325bc5 | 982 | #ifdef __CYGWIN__ |
e83e4e24 | 983 | if (!startswith (s.get (), "cYg")) |
10325bc5 | 984 | #endif |
040ea00b | 985 | { |
e83e4e24 | 986 | char *p = strchr (s.get (), '\0'); |
040ea00b | 987 | |
e83e4e24 | 988 | if (p > s.get () && *--p == '\n') |
040ea00b | 989 | *p = '\0'; |
e83e4e24 | 990 | warning (("%s"), s.get ()); |
040ea00b | 991 | } |
3cee93ac | 992 | } |
f20c58f5 | 993 | #ifdef __CYGWIN__ |
d3a09475 | 994 | else |
3cee93ac | 995 | { |
581e13c1 MS |
996 | /* Got a cygwin signal marker. A cygwin signal is followed by |
997 | the signal number itself and then optionally followed by the | |
998 | thread id and address to saved context within the DLL. If | |
999 | these are supplied, then the given thread is assumed to have | |
1000 | issued the signal and the context from the thread is assumed | |
1001 | to be stored at the given address in the inferior. Tell gdb | |
1002 | to treat this like a real signal. */ | |
3cee93ac | 1003 | char *p; |
e83e4e24 | 1004 | int sig = strtol (s.get () + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
0ae534d2 | 1005 | gdb_signal gotasig = gdb_signal_from_host (sig); |
c62fa0e2 | 1006 | |
0714f9bf SS |
1007 | ourstatus->value.sig = gotasig; |
1008 | if (gotasig) | |
a244bdca CF |
1009 | { |
1010 | LPCVOID x; | |
2c15ef43 | 1011 | SIZE_T n; |
c62fa0e2 | 1012 | |
a244bdca CF |
1013 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
1014 | retval = strtoul (p, &p, 0); | |
1015 | if (!retval) | |
ab4ee614 | 1016 | retval = current_event.dwThreadId; |
40653b35 | 1017 | else if ((x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0)) |
a244bdca | 1018 | && ReadProcessMemory (current_process_handle, x, |
581e13c1 MS |
1019 | &saved_context, |
1020 | __COPY_CONTEXT_SIZE, &n) | |
a244bdca CF |
1021 | && n == __COPY_CONTEXT_SIZE) |
1022 | have_saved_context = 1; | |
a244bdca | 1023 | } |
3cee93ac | 1024 | } |
cb832706 | 1025 | #endif |
3cee93ac | 1026 | |
a244bdca | 1027 | return retval; |
3cee93ac | 1028 | } |
24e60978 | 1029 | |
c1748f97 PM |
1030 | static int |
1031 | display_selector (HANDLE thread, DWORD sel) | |
1032 | { | |
1033 | LDT_ENTRY info; | |
1034 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
1035 | { | |
1036 | int base, limit; | |
d50a0ce2 | 1037 | printf_filtered ("0x%03x: ", (unsigned) sel); |
c1748f97 | 1038 | if (!info.HighWord.Bits.Pres) |
baa93fa6 CF |
1039 | { |
1040 | puts_filtered ("Segment not present\n"); | |
1041 | return 0; | |
1042 | } | |
c1748f97 PM |
1043 | base = (info.HighWord.Bits.BaseHi << 24) + |
1044 | (info.HighWord.Bits.BaseMid << 16) | |
1045 | + info.BaseLow; | |
1046 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
1047 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 1048 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
1049 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
1050 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 1051 | puts_filtered(" 32-bit "); |
c1748f97 | 1052 | else |
baa93fa6 | 1053 | puts_filtered(" 16-bit "); |
c1748f97 PM |
1054 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
1055 | { | |
1056 | case 0: | |
baa93fa6 CF |
1057 | puts_filtered ("Data (Read-Only, Exp-up"); |
1058 | break; | |
c1748f97 | 1059 | case 1: |
baa93fa6 CF |
1060 | puts_filtered ("Data (Read/Write, Exp-up"); |
1061 | break; | |
c1748f97 | 1062 | case 2: |
baa93fa6 CF |
1063 | puts_filtered ("Unused segment ("); |
1064 | break; | |
c1748f97 | 1065 | case 3: |
baa93fa6 CF |
1066 | puts_filtered ("Data (Read/Write, Exp-down"); |
1067 | break; | |
c1748f97 | 1068 | case 4: |
baa93fa6 CF |
1069 | puts_filtered ("Code (Exec-Only, N.Conf"); |
1070 | break; | |
c1748f97 | 1071 | case 5: |
baa93fa6 | 1072 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
1073 | break; |
1074 | case 6: | |
baa93fa6 | 1075 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
1076 | break; |
1077 | case 7: | |
baa93fa6 | 1078 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
1079 | break; |
1080 | default: | |
e432ccf1 JT |
1081 | printf_filtered ("Unknown type 0x%lx", |
1082 | (unsigned long) info.HighWord.Bits.Type); | |
c1748f97 PM |
1083 | } |
1084 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 1085 | puts_filtered(", N.Acc"); |
c1748f97 PM |
1086 | puts_filtered (")\n"); |
1087 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
1088 | puts_filtered("System selector "); | |
e432ccf1 JT |
1089 | printf_filtered ("Priviledge level = %ld. ", |
1090 | (unsigned long) info.HighWord.Bits.Dpl); | |
c1748f97 | 1091 | if (info.HighWord.Bits.Granularity) |
baa93fa6 | 1092 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
1093 | else |
1094 | puts_filtered ("Byte granular.\n"); | |
1095 | return 1; | |
1096 | } | |
1097 | else | |
1098 | { | |
5572ce1f PM |
1099 | DWORD err = GetLastError (); |
1100 | if (err == ERROR_NOT_SUPPORTED) | |
1101 | printf_filtered ("Function not supported\n"); | |
1102 | else | |
d50a0ce2 | 1103 | printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel); |
c1748f97 PM |
1104 | return 0; |
1105 | } | |
1106 | } | |
1107 | ||
1108 | static void | |
5fed81ff | 1109 | display_selectors (const char * args, int from_tty) |
c1748f97 PM |
1110 | { |
1111 | if (!current_thread) | |
1112 | { | |
1113 | puts_filtered ("Impossible to display selectors now.\n"); | |
1114 | return; | |
1115 | } | |
1116 | if (!args) | |
1117 | { | |
1118 | ||
1119 | puts_filtered ("Selector $cs\n"); | |
1120 | display_selector (current_thread->h, | |
baa93fa6 | 1121 | current_thread->context.SegCs); |
c1748f97 PM |
1122 | puts_filtered ("Selector $ds\n"); |
1123 | display_selector (current_thread->h, | |
baa93fa6 | 1124 | current_thread->context.SegDs); |
c1748f97 PM |
1125 | puts_filtered ("Selector $es\n"); |
1126 | display_selector (current_thread->h, | |
baa93fa6 | 1127 | current_thread->context.SegEs); |
c1748f97 PM |
1128 | puts_filtered ("Selector $ss\n"); |
1129 | display_selector (current_thread->h, | |
baa93fa6 | 1130 | current_thread->context.SegSs); |
c1748f97 PM |
1131 | puts_filtered ("Selector $fs\n"); |
1132 | display_selector (current_thread->h, | |
1133 | current_thread->context.SegFs); | |
1134 | puts_filtered ("Selector $gs\n"); | |
1135 | display_selector (current_thread->h, | |
baa93fa6 | 1136 | current_thread->context.SegGs); |
c1748f97 PM |
1137 | } |
1138 | else | |
1139 | { | |
1140 | int sel; | |
1141 | sel = parse_and_eval_long (args); | |
1142 | printf_filtered ("Selector \"%s\"\n",args); | |
1143 | display_selector (current_thread->h, sel); | |
1144 | } | |
1145 | } | |
1146 | ||
7393af7c | 1147 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
a74ce742 PM |
1148 | printf_unfiltered ("gdb: Target exception %s at %s\n", x, \ |
1149 | host_address_to_string (\ | |
1150 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)) | |
7393af7c | 1151 | |
24cdb46e | 1152 | static handle_exception_result |
450005e7 | 1153 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 1154 | { |
24cdb46e РИ |
1155 | EXCEPTION_RECORD *rec = ¤t_event.u.Exception.ExceptionRecord; |
1156 | DWORD code = rec->ExceptionCode; | |
1157 | handle_exception_result result = HANDLE_EXCEPTION_HANDLED; | |
3cee93ac | 1158 | |
29fe111d | 1159 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1160 | |
581e13c1 | 1161 | /* Record the context of the current thread. */ |
c25b7cce | 1162 | thread_rec (current_event.dwThreadId, -1); |
24e60978 | 1163 | |
29fe111d | 1164 | switch (code) |
24e60978 | 1165 | { |
1ef980b9 | 1166 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c | 1167 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
a493e3e2 | 1168 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
10325bc5 | 1169 | #ifdef __CYGWIN__ |
8da8e0b3 | 1170 | { |
581e13c1 MS |
1171 | /* See if the access violation happened within the cygwin DLL |
1172 | itself. Cygwin uses a kind of exception handling to deal | |
1173 | with passed-in invalid addresses. gdb should not treat | |
1174 | these as real SEGVs since they will be silently handled by | |
1175 | cygwin. A real SEGV will (theoretically) be caught by | |
1176 | cygwin later in the process and will be sent as a | |
1177 | cygwin-specific-signal. So, ignore SEGVs if they show up | |
1178 | within the text segment of the DLL itself. */ | |
2c02bd72 | 1179 | const char *fn; |
24cdb46e | 1180 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) rec->ExceptionAddress; |
581e13c1 MS |
1181 | |
1182 | if ((!cygwin_exceptions && (addr >= cygwin_load_start | |
1183 | && addr < cygwin_load_end)) | |
a244bdca | 1184 | || (find_pc_partial_function (addr, &fn, NULL, NULL) |
61012eef | 1185 | && startswith (fn, "KERNEL32!IsBad"))) |
24cdb46e | 1186 | return HANDLE_EXCEPTION_UNHANDLED; |
8da8e0b3 | 1187 | } |
10325bc5 | 1188 | #endif |
7393af7c PM |
1189 | break; |
1190 | case STATUS_STACK_OVERFLOW: | |
1191 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
a493e3e2 | 1192 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
7393af7c PM |
1193 | break; |
1194 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1195 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
a493e3e2 | 1196 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1197 | break; |
1198 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1199 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
a493e3e2 | 1200 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1201 | break; |
1202 | case STATUS_FLOAT_INEXACT_RESULT: | |
1203 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
a493e3e2 | 1204 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1205 | break; |
1206 | case STATUS_FLOAT_INVALID_OPERATION: | |
1207 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
a493e3e2 | 1208 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1209 | break; |
1210 | case STATUS_FLOAT_OVERFLOW: | |
1211 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
a493e3e2 | 1212 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1213 | break; |
1214 | case STATUS_FLOAT_STACK_CHECK: | |
1215 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
a493e3e2 | 1216 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
1ef980b9 | 1217 | break; |
3b7c8b74 | 1218 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c | 1219 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
a493e3e2 | 1220 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c | 1221 | break; |
3b7c8b74 | 1222 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c | 1223 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
a493e3e2 | 1224 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c | 1225 | break; |
3b7c8b74 | 1226 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1227 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
a493e3e2 | 1228 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
3b7c8b74 | 1229 | break; |
7393af7c PM |
1230 | case STATUS_INTEGER_OVERFLOW: |
1231 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
a493e3e2 | 1232 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
1ef980b9 SC |
1233 | break; |
1234 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1235 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
a493e3e2 | 1236 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
1ef980b9 SC |
1237 | break; |
1238 | case DBG_CONTROL_C: | |
7393af7c | 1239 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
a493e3e2 | 1240 | ourstatus->value.sig = GDB_SIGNAL_INT; |
5b421780 PM |
1241 | break; |
1242 | case DBG_CONTROL_BREAK: | |
7393af7c | 1243 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
a493e3e2 | 1244 | ourstatus->value.sig = GDB_SIGNAL_INT; |
1ef980b9 SC |
1245 | break; |
1246 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1247 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
a493e3e2 | 1248 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
1ef980b9 | 1249 | break; |
8227c82d | 1250 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c | 1251 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
a493e3e2 | 1252 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
7393af7c PM |
1253 | break; |
1254 | case EXCEPTION_PRIV_INSTRUCTION: | |
1255 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
a493e3e2 | 1256 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
7393af7c PM |
1257 | break; |
1258 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1259 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
a493e3e2 | 1260 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
8227c82d | 1261 | break; |
24cdb46e РИ |
1262 | case MS_VC_EXCEPTION: |
1263 | if (rec->NumberParameters >= 3 | |
1264 | && (rec->ExceptionInformation[0] & 0xffffffff) == 0x1000) | |
1265 | { | |
1266 | DWORD named_thread_id; | |
1267 | windows_thread_info *named_thread; | |
1268 | CORE_ADDR thread_name_target; | |
1269 | ||
1270 | DEBUG_EXCEPTION_SIMPLE ("MS_VC_EXCEPTION"); | |
1271 | ||
1272 | thread_name_target = rec->ExceptionInformation[1]; | |
1273 | named_thread_id = (DWORD) (0xffffffff & rec->ExceptionInformation[2]); | |
1274 | ||
1275 | if (named_thread_id == (DWORD) -1) | |
1276 | named_thread_id = current_event.dwThreadId; | |
1277 | ||
1278 | named_thread = thread_rec (named_thread_id, 0); | |
1279 | if (named_thread != NULL) | |
1280 | { | |
1281 | int thread_name_len; | |
e83e4e24 | 1282 | gdb::unique_xmalloc_ptr<char> thread_name; |
24cdb46e РИ |
1283 | |
1284 | thread_name_len = target_read_string (thread_name_target, | |
1285 | &thread_name, 1025, NULL); | |
1286 | if (thread_name_len > 0) | |
1287 | { | |
e83e4e24 | 1288 | thread_name.get ()[thread_name_len - 1] = '\0'; |
24cdb46e | 1289 | xfree (named_thread->name); |
e83e4e24 | 1290 | named_thread->name = thread_name.release (); |
24cdb46e | 1291 | } |
24cdb46e РИ |
1292 | } |
1293 | ourstatus->value.sig = GDB_SIGNAL_TRAP; | |
1294 | result = HANDLE_EXCEPTION_IGNORED; | |
1295 | break; | |
1296 | } | |
e7ec8713 TT |
1297 | /* treat improperly formed exception as unknown */ |
1298 | /* FALLTHROUGH */ | |
1ef980b9 | 1299 | default: |
581e13c1 | 1300 | /* Treat unhandled first chance exceptions specially. */ |
02e423b9 | 1301 | if (current_event.u.Exception.dwFirstChance) |
24cdb46e | 1302 | return HANDLE_EXCEPTION_UNHANDLED; |
d50a0ce2 CV |
1303 | printf_unfiltered ("gdb: unknown target exception 0x%08x at %s\n", |
1304 | (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
a74ce742 PM |
1305 | host_address_to_string ( |
1306 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)); | |
a493e3e2 | 1307 | ourstatus->value.sig = GDB_SIGNAL_UNKNOWN; |
1ef980b9 | 1308 | break; |
24e60978 | 1309 | } |
24e60978 | 1310 | exception_count++; |
7393af7c | 1311 | last_sig = ourstatus->value.sig; |
24cdb46e | 1312 | return result; |
24e60978 SC |
1313 | } |
1314 | ||
17617f2d EZ |
1315 | /* Resume thread specified by ID, or all artificially suspended |
1316 | threads, if we are continuing execution. KILLED non-zero means we | |
1317 | have killed the inferior, so we should ignore weird errors due to | |
1318 | threads shutting down. */ | |
3cee93ac | 1319 | static BOOL |
17617f2d | 1320 | windows_continue (DWORD continue_status, int id, int killed) |
3cee93ac | 1321 | { |
876d1cd7 | 1322 | windows_thread_info *th; |
3cee93ac CF |
1323 | BOOL res; |
1324 | ||
0c3d84be | 1325 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=0x%x, %s);\n", |
d50a0ce2 CV |
1326 | (unsigned) current_event.dwProcessId, |
1327 | (unsigned) current_event.dwThreadId, | |
dfe7f3ac | 1328 | continue_status == DBG_CONTINUE ? |
7393af7c | 1329 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
6537bb24 PA |
1330 | |
1331 | for (th = &thread_head; (th = th->next) != NULL;) | |
1332 | if ((id == -1 || id == (int) th->id) | |
1333 | && th->suspended) | |
1334 | { | |
1335 | if (debug_registers_changed) | |
1336 | { | |
1337 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1338 | th->context.Dr0 = dr[0]; | |
1339 | th->context.Dr1 = dr[1]; | |
1340 | th->context.Dr2 = dr[2]; | |
1341 | th->context.Dr3 = dr[3]; | |
1342 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1343 | th->context.Dr7 = dr[7]; | |
1344 | } | |
1345 | if (th->context.ContextFlags) | |
1346 | { | |
17617f2d EZ |
1347 | DWORD ec = 0; |
1348 | ||
1349 | if (GetExitCodeThread (th->h, &ec) | |
1350 | && ec == STILL_ACTIVE) | |
1351 | { | |
1352 | BOOL status = SetThreadContext (th->h, &th->context); | |
1353 | ||
1354 | if (!killed) | |
1355 | CHECK (status); | |
1356 | } | |
6537bb24 PA |
1357 | th->context.ContextFlags = 0; |
1358 | } | |
1359 | if (th->suspended > 0) | |
1360 | (void) ResumeThread (th->h); | |
1361 | th->suspended = 0; | |
1362 | } | |
1363 | ||
0714f9bf SS |
1364 | res = ContinueDebugEvent (current_event.dwProcessId, |
1365 | current_event.dwThreadId, | |
1366 | continue_status); | |
3cee93ac | 1367 | |
68ffc902 JT |
1368 | if (!res) |
1369 | error (_("Failed to resume program execution" | |
1370 | " (ContinueDebugEvent failed, error %u)"), | |
1371 | (unsigned int) GetLastError ()); | |
1372 | ||
fa4ba8da | 1373 | debug_registers_changed = 0; |
3cee93ac CF |
1374 | return res; |
1375 | } | |
1376 | ||
d6dc8049 CF |
1377 | /* Called in pathological case where Windows fails to send a |
1378 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1379 | static DWORD |
5439edaa | 1380 | fake_create_process (void) |
3ade5333 CF |
1381 | { |
1382 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1383 | current_event.dwProcessId); | |
bf25528d CF |
1384 | if (current_process_handle != NULL) |
1385 | open_process_used = 1; | |
1386 | else | |
1387 | { | |
d50a0ce2 CV |
1388 | error (_("OpenProcess call failed, GetLastError = %u"), |
1389 | (unsigned) GetLastError ()); | |
bf25528d CF |
1390 | /* We can not debug anything in that case. */ |
1391 | } | |
c559d709 JB |
1392 | current_thread |
1393 | = windows_add_thread (ptid_t (current_event.dwProcessId, 0, | |
1394 | current_event.dwThreadId), | |
1395 | current_event.u.CreateThread.hThread, | |
1396 | current_event.u.CreateThread.lpThreadLocalBase, | |
1397 | true /* main_thread_p */); | |
ab4ee614 | 1398 | return current_event.dwThreadId; |
3ade5333 CF |
1399 | } |
1400 | ||
f6ac5f3d PA |
1401 | void |
1402 | windows_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
a244bdca | 1403 | { |
876d1cd7 | 1404 | windows_thread_info *th; |
a244bdca CF |
1405 | DWORD continue_status = DBG_CONTINUE; |
1406 | ||
2dc38344 | 1407 | /* A specific PTID means `step only this thread id'. */ |
d7e15655 | 1408 | int resume_all = ptid == minus_one_ptid; |
2dc38344 PA |
1409 | |
1410 | /* If we're continuing all threads, it's the current inferior that | |
1411 | should be handled specially. */ | |
1412 | if (resume_all) | |
1413 | ptid = inferior_ptid; | |
a244bdca | 1414 | |
a493e3e2 | 1415 | if (sig != GDB_SIGNAL_0) |
a244bdca CF |
1416 | { |
1417 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1418 | { | |
1419 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1420 | } | |
1421 | else if (sig == last_sig) | |
1422 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1423 | else | |
1424 | #if 0 | |
1425 | /* This code does not seem to work, because | |
1426 | the kernel does probably not consider changes in the ExceptionRecord | |
1427 | structure when passing the exception to the inferior. | |
1428 | Note that this seems possible in the exception handler itself. */ | |
1429 | { | |
73c13fe6 TT |
1430 | for (const xlate_exception &x : xlate) |
1431 | if (x.us == sig) | |
a244bdca | 1432 | { |
581e13c1 | 1433 | current_event.u.Exception.ExceptionRecord.ExceptionCode |
73c13fe6 | 1434 | = x.them; |
a244bdca CF |
1435 | continue_status = DBG_EXCEPTION_NOT_HANDLED; |
1436 | break; | |
1437 | } | |
1438 | if (continue_status == DBG_CONTINUE) | |
1439 | { | |
1440 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1441 | } | |
1442 | } | |
1443 | #endif | |
23942819 | 1444 | DEBUG_EXCEPT(("Can only continue with received signal %d.\n", |
a244bdca CF |
1445 | last_sig)); |
1446 | } | |
1447 | ||
a493e3e2 | 1448 | last_sig = GDB_SIGNAL_0; |
a244bdca | 1449 | |
55dfc88f TT |
1450 | DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=0x%x, step=%d, sig=%d);\n", |
1451 | ptid.pid (), (unsigned) ptid.tid (), step, sig)); | |
a244bdca | 1452 | |
581e13c1 | 1453 | /* Get context for currently selected thread. */ |
cc6bcb54 | 1454 | th = thread_rec (inferior_ptid.tid (), FALSE); |
a244bdca CF |
1455 | if (th) |
1456 | { | |
1457 | if (step) | |
1458 | { | |
581e13c1 | 1459 | /* Single step by setting t bit. */ |
a97b0ac8 | 1460 | struct regcache *regcache = get_current_regcache (); |
ac7936df | 1461 | struct gdbarch *gdbarch = regcache->arch (); |
f6ac5f3d | 1462 | fetch_registers (regcache, gdbarch_ps_regnum (gdbarch)); |
a244bdca CF |
1463 | th->context.EFlags |= FLAG_TRACE_BIT; |
1464 | } | |
1465 | ||
1466 | if (th->context.ContextFlags) | |
1467 | { | |
1468 | if (debug_registers_changed) | |
1469 | { | |
1470 | th->context.Dr0 = dr[0]; | |
1471 | th->context.Dr1 = dr[1]; | |
1472 | th->context.Dr2 = dr[2]; | |
1473 | th->context.Dr3 = dr[3]; | |
6537bb24 | 1474 | th->context.Dr6 = DR6_CLEAR_VALUE; |
a244bdca CF |
1475 | th->context.Dr7 = dr[7]; |
1476 | } | |
1477 | CHECK (SetThreadContext (th->h, &th->context)); | |
1478 | th->context.ContextFlags = 0; | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | /* Allow continuing with the same signal that interrupted us. | |
581e13c1 | 1483 | Otherwise complain. */ |
a244bdca | 1484 | |
2dc38344 | 1485 | if (resume_all) |
17617f2d | 1486 | windows_continue (continue_status, -1, 0); |
2dc38344 | 1487 | else |
cc6bcb54 | 1488 | windows_continue (continue_status, ptid.tid (), 0); |
a244bdca CF |
1489 | } |
1490 | ||
695de547 CF |
1491 | /* Ctrl-C handler used when the inferior is not run in the same console. The |
1492 | handler is in charge of interrupting the inferior using DebugBreakProcess. | |
1493 | Note that this function is not available prior to Windows XP. In this case | |
1494 | we emit a warning. */ | |
d603d4b3 | 1495 | static BOOL WINAPI |
695de547 CF |
1496 | ctrl_c_handler (DWORD event_type) |
1497 | { | |
1498 | const int attach_flag = current_inferior ()->attach_flag; | |
1499 | ||
bb0613a5 PM |
1500 | /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */ |
1501 | if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT) | |
695de547 CF |
1502 | return FALSE; |
1503 | ||
1504 | /* If the inferior and the debugger share the same console, do nothing as | |
1505 | the inferior has also received the Ctrl-C event. */ | |
1506 | if (!new_console && !attach_flag) | |
1507 | return TRUE; | |
1508 | ||
1509 | if (!DebugBreakProcess (current_process_handle)) | |
581e13c1 MS |
1510 | warning (_("Could not interrupt program. " |
1511 | "Press Ctrl-c in the program console.")); | |
695de547 CF |
1512 | |
1513 | /* Return true to tell that Ctrl-C has been handled. */ | |
1514 | return TRUE; | |
1515 | } | |
1516 | ||
e6ad66bd JT |
1517 | /* Get the next event from the child. Returns a non-zero thread id if the event |
1518 | requires handling by WFI (or whatever). */ | |
1e37c281 | 1519 | static int |
28439f5e PA |
1520 | get_windows_debug_event (struct target_ops *ops, |
1521 | int pid, struct target_waitstatus *ourstatus) | |
1e37c281 JM |
1522 | { |
1523 | BOOL debug_event; | |
8a892701 | 1524 | DWORD continue_status, event_code; |
876d1cd7 YZ |
1525 | windows_thread_info *th; |
1526 | static windows_thread_info dummy_thread_info; | |
e6ad66bd | 1527 | DWORD thread_id = 0; |
1e37c281 | 1528 | |
a493e3e2 | 1529 | last_sig = GDB_SIGNAL_0; |
9d3789f7 | 1530 | |
8a892701 | 1531 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1532 | goto out; |
1e37c281 JM |
1533 | |
1534 | event_count++; | |
1535 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1536 | |
8a892701 | 1537 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1538 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
87a45c96 | 1539 | th = NULL; |
a244bdca | 1540 | have_saved_context = 0; |
8a892701 CF |
1541 | |
1542 | switch (event_code) | |
1e37c281 JM |
1543 | { |
1544 | case CREATE_THREAD_DEBUG_EVENT: | |
0c3d84be | 1545 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1546 | (unsigned) current_event.dwProcessId, |
1547 | (unsigned) current_event.dwThreadId, | |
1548 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac | 1549 | if (saw_create != 1) |
3ade5333 | 1550 | { |
181e7f93 PA |
1551 | struct inferior *inf; |
1552 | inf = find_inferior_pid (current_event.dwProcessId); | |
1553 | if (!saw_create && inf->attach_flag) | |
3ade5333 | 1554 | { |
d6dc8049 CF |
1555 | /* Kludge around a Windows bug where first event is a create |
1556 | thread event. Caused when attached process does not have | |
581e13c1 | 1557 | a main thread. */ |
e6ad66bd JT |
1558 | thread_id = fake_create_process (); |
1559 | if (thread_id) | |
181e7f93 | 1560 | saw_create++; |
3ade5333 CF |
1561 | } |
1562 | break; | |
1563 | } | |
581e13c1 | 1564 | /* Record the existence of this thread. */ |
e6ad66bd | 1565 | thread_id = current_event.dwThreadId; |
c559d709 JB |
1566 | th = windows_add_thread |
1567 | (ptid_t (current_event.dwProcessId, 0, current_event.dwThreadId), | |
1568 | current_event.u.CreateThread.hThread, | |
1569 | current_event.u.CreateThread.lpThreadLocalBase, | |
1570 | false /* main_thread_p */); | |
711e434b | 1571 | |
1e37c281 JM |
1572 | break; |
1573 | ||
1574 | case EXIT_THREAD_DEBUG_EVENT: | |
0c3d84be | 1575 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1576 | (unsigned) current_event.dwProcessId, |
1577 | (unsigned) current_event.dwThreadId, | |
1578 | "EXIT_THREAD_DEBUG_EVENT")); | |
2eab46b1 JB |
1579 | windows_delete_thread (ptid_t (current_event.dwProcessId, 0, |
1580 | current_event.dwThreadId), | |
c559d709 JB |
1581 | current_event.u.ExitThread.dwExitCode, |
1582 | false /* main_thread_p */); | |
2eab46b1 | 1583 | th = &dummy_thread_info; |
1e37c281 JM |
1584 | break; |
1585 | ||
1586 | case CREATE_PROCESS_DEBUG_EVENT: | |
0c3d84be | 1587 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1588 | (unsigned) current_event.dwProcessId, |
1589 | (unsigned) current_event.dwThreadId, | |
1590 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1591 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1592 | if (++saw_create != 1) |
bf25528d | 1593 | break; |
1e37c281 | 1594 | |
dfe7f3ac | 1595 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
581e13c1 | 1596 | /* Add the main thread. */ |
c559d709 JB |
1597 | th = windows_add_thread |
1598 | (ptid_t (current_event.dwProcessId, 0, | |
1599 | current_event.dwThreadId), | |
1600 | current_event.u.CreateProcessInfo.hThread, | |
1601 | current_event.u.CreateProcessInfo.lpThreadLocalBase, | |
1602 | true /* main_thread_p */); | |
e6ad66bd | 1603 | thread_id = current_event.dwThreadId; |
1e37c281 JM |
1604 | break; |
1605 | ||
1606 | case EXIT_PROCESS_DEBUG_EVENT: | |
0c3d84be | 1607 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1608 | (unsigned) current_event.dwProcessId, |
1609 | (unsigned) current_event.dwThreadId, | |
1610 | "EXIT_PROCESS_DEBUG_EVENT")); | |
16d905e2 CF |
1611 | if (!windows_initialization_done) |
1612 | { | |
223ffa71 | 1613 | target_terminal::ours (); |
bc1e6c81 | 1614 | target_mourn_inferior (inferior_ptid); |
16d905e2 CF |
1615 | error (_("During startup program exited with code 0x%x."), |
1616 | (unsigned int) current_event.u.ExitProcess.dwExitCode); | |
1617 | } | |
1618 | else if (saw_create == 1) | |
1619 | { | |
2eab46b1 | 1620 | windows_delete_thread (ptid_t (current_event.dwProcessId, 0, |
8ed5b76e | 1621 | current_event.dwThreadId), |
c559d709 | 1622 | 0, true /* main_thread_p */); |
16d905e2 CF |
1623 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
1624 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
8ed5b76e | 1625 | thread_id = current_event.dwThreadId; |
16d905e2 | 1626 | } |
8a892701 | 1627 | break; |
1e37c281 JM |
1628 | |
1629 | case LOAD_DLL_DEBUG_EVENT: | |
0c3d84be | 1630 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1631 | (unsigned) current_event.dwProcessId, |
1632 | (unsigned) current_event.dwThreadId, | |
1633 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1634 | CloseHandle (current_event.u.LoadDll.hFile); |
ea39ad35 | 1635 | if (saw_create != 1 || ! windows_initialization_done) |
dfe7f3ac | 1636 | break; |
bf469271 | 1637 | catch_errors (handle_load_dll); |
450005e7 CF |
1638 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1639 | ourstatus->value.integer = 0; | |
ab4ee614 | 1640 | thread_id = current_event.dwThreadId; |
1e37c281 JM |
1641 | break; |
1642 | ||
1643 | case UNLOAD_DLL_DEBUG_EVENT: | |
0c3d84be | 1644 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1645 | (unsigned) current_event.dwProcessId, |
1646 | (unsigned) current_event.dwThreadId, | |
1647 | "UNLOAD_DLL_DEBUG_EVENT")); | |
ea39ad35 | 1648 | if (saw_create != 1 || ! windows_initialization_done) |
dfe7f3ac | 1649 | break; |
bf469271 | 1650 | catch_errors (handle_unload_dll); |
de1b3c3d PA |
1651 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1652 | ourstatus->value.integer = 0; | |
ab4ee614 | 1653 | thread_id = current_event.dwThreadId; |
d3ff4a77 | 1654 | break; |
1e37c281 JM |
1655 | |
1656 | case EXCEPTION_DEBUG_EVENT: | |
0c3d84be | 1657 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1658 | (unsigned) current_event.dwProcessId, |
1659 | (unsigned) current_event.dwThreadId, | |
1660 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1661 | if (saw_create != 1) |
1662 | break; | |
24cdb46e РИ |
1663 | switch (handle_exception (ourstatus)) |
1664 | { | |
1665 | case HANDLE_EXCEPTION_UNHANDLED: | |
1666 | default: | |
1667 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1668 | break; | |
1669 | case HANDLE_EXCEPTION_HANDLED: | |
1670 | thread_id = current_event.dwThreadId; | |
1671 | break; | |
1672 | case HANDLE_EXCEPTION_IGNORED: | |
1673 | continue_status = DBG_CONTINUE; | |
1674 | break; | |
1675 | } | |
1e37c281 JM |
1676 | break; |
1677 | ||
581e13c1 | 1678 | case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */ |
0c3d84be | 1679 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1680 | (unsigned) current_event.dwProcessId, |
1681 | (unsigned) current_event.dwThreadId, | |
1682 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1683 | if (saw_create != 1) |
1684 | break; | |
e6ad66bd | 1685 | thread_id = handle_output_debug_string (ourstatus); |
1e37c281 | 1686 | break; |
9d3789f7 | 1687 | |
1e37c281 | 1688 | default: |
dfe7f3ac CF |
1689 | if (saw_create != 1) |
1690 | break; | |
0c3d84be | 1691 | printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n", |
d50a0ce2 CV |
1692 | (unsigned) current_event.dwProcessId, |
1693 | (unsigned) current_event.dwThreadId); | |
1694 | printf_unfiltered (" unknown event code %u\n", | |
1695 | (unsigned) current_event.dwDebugEventCode); | |
1e37c281 JM |
1696 | break; |
1697 | } | |
1698 | ||
e6ad66bd | 1699 | if (!thread_id || saw_create != 1) |
a244bdca | 1700 | { |
95824559 | 1701 | CHECK (windows_continue (continue_status, -1, 0)); |
a244bdca | 1702 | } |
450005e7 | 1703 | else |
9d3789f7 | 1704 | { |
fd79271b | 1705 | inferior_ptid = ptid_t (current_event.dwProcessId, 0, thread_id); |
776704b9 JT |
1706 | current_thread = th; |
1707 | if (!current_thread) | |
f16eab5f | 1708 | current_thread = thread_rec (thread_id, TRUE); |
9d3789f7 | 1709 | } |
1e37c281 JM |
1710 | |
1711 | out: | |
e6ad66bd | 1712 | return thread_id; |
1e37c281 JM |
1713 | } |
1714 | ||
2dc38344 | 1715 | /* Wait for interesting events to occur in the target process. */ |
f6ac5f3d PA |
1716 | ptid_t |
1717 | windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
1718 | int options) | |
24e60978 | 1719 | { |
2dc38344 | 1720 | int pid = -1; |
39f77062 | 1721 | |
24e60978 SC |
1722 | /* We loop when we get a non-standard exception rather than return |
1723 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1724 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 | 1725 | the birth or death of threads, which mean that the current thread |
581e13c1 | 1726 | isn't necessarily what you think it is. */ |
24e60978 SC |
1727 | |
1728 | while (1) | |
450005e7 | 1729 | { |
c57918b2 | 1730 | int retval; |
2b008701 | 1731 | |
695de547 CF |
1732 | /* If the user presses Ctrl-c while the debugger is waiting |
1733 | for an event, he expects the debugger to interrupt his program | |
1734 | and to get the prompt back. There are two possible situations: | |
1735 | ||
1736 | - The debugger and the program do not share the console, in | |
1737 | which case the Ctrl-c event only reached the debugger. | |
1738 | In that case, the ctrl_c handler will take care of interrupting | |
581e13c1 MS |
1739 | the inferior. Note that this case is working starting with |
1740 | Windows XP. For Windows 2000, Ctrl-C should be pressed in the | |
695de547 CF |
1741 | inferior console. |
1742 | ||
1743 | - The debugger and the program share the same console, in which | |
1744 | case both debugger and inferior will receive the Ctrl-c event. | |
1745 | In that case the ctrl_c handler will ignore the event, as the | |
1746 | Ctrl-c event generated inside the inferior will trigger the | |
1747 | expected debug event. | |
1748 | ||
1749 | FIXME: brobecker/2008-05-20: If the inferior receives the | |
1750 | signal first and the delay until GDB receives that signal | |
1751 | is sufficiently long, GDB can sometimes receive the SIGINT | |
1752 | after we have unblocked the CTRL+C handler. This would | |
1753 | lead to the debugger stopping prematurely while handling | |
1754 | the new-thread event that comes with the handling of the SIGINT | |
1755 | inside the inferior, and then stop again immediately when | |
1756 | the user tries to resume the execution in the inferior. | |
1757 | This is a classic race that we should try to fix one day. */ | |
1758 | SetConsoleCtrlHandler (&ctrl_c_handler, TRUE); | |
f6ac5f3d | 1759 | retval = get_windows_debug_event (this, pid, ourstatus); |
695de547 | 1760 | SetConsoleCtrlHandler (&ctrl_c_handler, FALSE); |
c57918b2 | 1761 | |
450005e7 | 1762 | if (retval) |
fd79271b | 1763 | return ptid_t (current_event.dwProcessId, 0, retval); |
450005e7 CF |
1764 | else |
1765 | { | |
1766 | int detach = 0; | |
3cee93ac | 1767 | |
98bbd631 AC |
1768 | if (deprecated_ui_loop_hook != NULL) |
1769 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1770 | |
450005e7 | 1771 | if (detach) |
f6ac5f3d | 1772 | kill (); |
450005e7 CF |
1773 | } |
1774 | } | |
24e60978 SC |
1775 | } |
1776 | ||
ea39ad35 JB |
1777 | /* Iterate over all DLLs currently mapped by our inferior, and |
1778 | add them to our list of solibs. */ | |
94481b8c JB |
1779 | |
1780 | static void | |
ea39ad35 | 1781 | windows_add_all_dlls (void) |
94481b8c | 1782 | { |
94481b8c JB |
1783 | HMODULE dummy_hmodule; |
1784 | DWORD cb_needed; | |
1785 | HMODULE *hmodules; | |
1786 | int i; | |
1787 | ||
94481b8c JB |
1788 | if (EnumProcessModules (current_process_handle, &dummy_hmodule, |
1789 | sizeof (HMODULE), &cb_needed) == 0) | |
1790 | return; | |
1791 | ||
1792 | if (cb_needed < 1) | |
1793 | return; | |
1794 | ||
1795 | hmodules = (HMODULE *) alloca (cb_needed); | |
1796 | if (EnumProcessModules (current_process_handle, hmodules, | |
1797 | cb_needed, &cb_needed) == 0) | |
1798 | return; | |
1799 | ||
ea39ad35 | 1800 | for (i = 1; i < (int) (cb_needed / sizeof (HMODULE)); i++) |
94481b8c JB |
1801 | { |
1802 | MODULEINFO mi; | |
774f74c2 PM |
1803 | #ifdef __USEWIDE |
1804 | wchar_t dll_name[__PMAX]; | |
1805 | char name[__PMAX]; | |
1806 | #else | |
94481b8c | 1807 | char dll_name[__PMAX]; |
774f74c2 PM |
1808 | char *name; |
1809 | #endif | |
94481b8c JB |
1810 | if (GetModuleInformation (current_process_handle, hmodules[i], |
1811 | &mi, sizeof (mi)) == 0) | |
1812 | continue; | |
1813 | if (GetModuleFileNameEx (current_process_handle, hmodules[i], | |
1814 | dll_name, sizeof (dll_name)) == 0) | |
1815 | continue; | |
774f74c2 PM |
1816 | #ifdef __USEWIDE |
1817 | wcstombs (name, dll_name, __PMAX); | |
1818 | #else | |
1819 | name = dll_name; | |
1820 | #endif | |
ea39ad35 JB |
1821 | |
1822 | solib_end->next = windows_make_so (name, mi.lpBaseOfDll); | |
1823 | solib_end = solib_end->next; | |
94481b8c JB |
1824 | } |
1825 | } | |
1826 | ||
9d3789f7 | 1827 | static void |
dc05df57 | 1828 | do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching) |
9d3789f7 | 1829 | { |
fa4ba8da | 1830 | int i; |
d6b48e9c | 1831 | struct inferior *inf; |
9d3789f7 | 1832 | |
a493e3e2 | 1833 | last_sig = GDB_SIGNAL_0; |
9d3789f7 CF |
1834 | event_count = 0; |
1835 | exception_count = 0; | |
bf25528d | 1836 | open_process_used = 0; |
fa4ba8da | 1837 | debug_registers_changed = 0; |
dfe7f3ac | 1838 | debug_registers_used = 0; |
fa4ba8da PM |
1839 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1840 | dr[i] = 0; | |
10325bc5 | 1841 | #ifdef __CYGWIN__ |
de1b3c3d | 1842 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1843 | #endif |
9d3789f7 CF |
1844 | current_event.dwProcessId = pid; |
1845 | memset (¤t_event, 0, sizeof (current_event)); | |
6a3cb8e8 PA |
1846 | if (!target_is_pushed (ops)) |
1847 | push_target (ops); | |
cb851954 | 1848 | disable_breakpoints_in_shlibs (); |
dc05df57 | 1849 | windows_clear_solib (); |
88056fbb | 1850 | clear_proceed_status (0); |
9d3789f7 CF |
1851 | init_wait_for_inferior (); |
1852 | ||
6c95b8df PA |
1853 | inf = current_inferior (); |
1854 | inferior_appeared (inf, pid); | |
181e7f93 | 1855 | inf->attach_flag = attaching; |
7f9f62ba | 1856 | |
9f9d052e PM |
1857 | /* Make the new process the current inferior, so terminal handling |
1858 | can rely on it. When attaching, we don't know about any thread | |
1859 | id here, but that's OK --- nothing should be referencing the | |
dc05df57 | 1860 | current thread until we report an event out of windows_wait. */ |
f2907e49 | 1861 | inferior_ptid = ptid_t (pid); |
9f9d052e | 1862 | |
223ffa71 TT |
1863 | target_terminal::init (); |
1864 | target_terminal::inferior (); | |
9d3789f7 | 1865 | |
16d905e2 | 1866 | windows_initialization_done = 0; |
c72f45d1 | 1867 | |
9d3789f7 CF |
1868 | while (1) |
1869 | { | |
c72f45d1 PA |
1870 | struct target_waitstatus status; |
1871 | ||
f6ac5f3d | 1872 | ops->wait (minus_one_ptid, &status, 0); |
c72f45d1 PA |
1873 | |
1874 | /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread | |
1875 | events. */ | |
1876 | if (status.kind != TARGET_WAITKIND_LOADED | |
1877 | && status.kind != TARGET_WAITKIND_SPURIOUS) | |
9d3789f7 | 1878 | break; |
c72f45d1 | 1879 | |
f6ac5f3d | 1880 | ops->resume (minus_one_ptid, 0, GDB_SIGNAL_0); |
9d3789f7 | 1881 | } |
eff8332b | 1882 | |
ea39ad35 | 1883 | /* Now that the inferior has been started and all DLLs have been mapped, |
3be75f87 JB |
1884 | we can iterate over all DLLs and load them in. |
1885 | ||
1886 | We avoid doing it any earlier because, on certain versions of Windows, | |
1887 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
1888 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
1889 | include the DLL name, preventing us from creating an associated SO. | |
1890 | A possible explanation is that ntdll.dll might be mapped before | |
1891 | the SO info gets created by the Windows system -- ntdll.dll is | |
1892 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
1893 | do not seem to suffer from that problem. | |
1894 | ||
1895 | Rather than try to work around this sort of issue, it is much | |
1896 | simpler to just ignore DLL load/unload events during the startup | |
1897 | phase, and then process them all in one batch now. */ | |
ea39ad35 | 1898 | windows_add_all_dlls (); |
94481b8c | 1899 | |
16d905e2 | 1900 | windows_initialization_done = 1; |
9d3789f7 CF |
1901 | return; |
1902 | } | |
1903 | ||
616a9dc4 CV |
1904 | /* Try to set or remove a user privilege to the current process. Return -1 |
1905 | if that fails, the previous setting of that privilege otherwise. | |
1906 | ||
1907 | This code is copied from the Cygwin source code and rearranged to allow | |
1908 | dynamically loading of the needed symbols from advapi32 which is only | |
581e13c1 | 1909 | available on NT/2K/XP. */ |
616a9dc4 CV |
1910 | static int |
1911 | set_process_privilege (const char *privilege, BOOL enable) | |
1912 | { | |
616a9dc4 CV |
1913 | HANDLE token_hdl = NULL; |
1914 | LUID restore_priv; | |
1915 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1916 | int ret = -1; | |
1917 | DWORD size; | |
1918 | ||
616a9dc4 CV |
1919 | if (!OpenProcessToken (GetCurrentProcess (), |
1920 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1921 | &token_hdl)) | |
1922 | goto out; | |
1923 | ||
418c6cb3 | 1924 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1925 | goto out; |
1926 | ||
1927 | new_priv.PrivilegeCount = 1; | |
1928 | new_priv.Privileges[0].Luid = restore_priv; | |
1929 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1930 | ||
1931 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1932 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1933 | goto out; |
1934 | #if 0 | |
1935 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1936 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
581e13c1 | 1937 | windows_attach(). */ |
616a9dc4 | 1938 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
581e13c1 | 1939 | be enabled. GetLastError () returns an correct error code, though. */ |
616a9dc4 CV |
1940 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) |
1941 | goto out; | |
1942 | #endif | |
1943 | ||
1944 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1945 | ||
1946 | out: | |
1947 | if (token_hdl) | |
1948 | CloseHandle (token_hdl); | |
1949 | ||
1950 | return ret; | |
1951 | } | |
1952 | ||
02cc9f49 | 1953 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
1954 | |
1955 | void | |
1956 | windows_nat_target::attach (const char *args, int from_tty) | |
24e60978 SC |
1957 | { |
1958 | BOOL ok; | |
559e75c0 | 1959 | DWORD pid; |
24e60978 | 1960 | |
74164c56 | 1961 | pid = parse_pid_to_attach (args); |
24e60978 | 1962 | |
616a9dc4 CV |
1963 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1964 | { | |
1965 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
581e13c1 MS |
1966 | printf_unfiltered ("This can cause attach to " |
1967 | "fail on Windows NT/2K/XP\n"); | |
616a9dc4 CV |
1968 | } |
1969 | ||
dc05df57 | 1970 | windows_init_thread_list (); |
9d3789f7 | 1971 | ok = DebugActiveProcess (pid); |
91a175b3 | 1972 | saw_create = 0; |
24e60978 | 1973 | |
10325bc5 | 1974 | #ifdef __CYGWIN__ |
24e60978 | 1975 | if (!ok) |
baa93fa6 | 1976 | { |
581e13c1 | 1977 | /* Try fall back to Cygwin pid. */ |
baa93fa6 CF |
1978 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
1979 | ||
1980 | if (pid > 0) | |
1981 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
1982 | } |
1983 | #endif | |
baa93fa6 | 1984 | |
10325bc5 PA |
1985 | if (!ok) |
1986 | error (_("Can't attach to process.")); | |
24e60978 | 1987 | |
2b008701 | 1988 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 1989 | |
24e60978 SC |
1990 | if (from_tty) |
1991 | { | |
1992 | char *exec_file = (char *) get_exec_file (0); | |
1993 | ||
1994 | if (exec_file) | |
1995 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
a068643d | 1996 | target_pid_to_str (ptid_t (pid)).c_str ()); |
24e60978 SC |
1997 | else |
1998 | printf_unfiltered ("Attaching to %s\n", | |
a068643d | 1999 | target_pid_to_str (ptid_t (pid)).c_str ()); |
24e60978 SC |
2000 | } |
2001 | ||
f6ac5f3d | 2002 | do_initial_windows_stuff (this, pid, 1); |
223ffa71 | 2003 | target_terminal::ours (); |
24e60978 SC |
2004 | } |
2005 | ||
f6ac5f3d PA |
2006 | void |
2007 | windows_nat_target::detach (inferior *inf, int from_tty) | |
24e60978 | 2008 | { |
02cc9f49 CV |
2009 | int detached = 1; |
2010 | ||
8473b447 | 2011 | ptid_t ptid = minus_one_ptid; |
f6ac5f3d | 2012 | resume (ptid, 0, GDB_SIGNAL_0); |
96998ce7 | 2013 | |
2b008701 CF |
2014 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
2015 | { | |
d50a0ce2 CV |
2016 | error (_("Can't detach process %u (error %u)"), |
2017 | (unsigned) current_event.dwProcessId, (unsigned) GetLastError ()); | |
2b008701 | 2018 | detached = 0; |
02cc9f49 | 2019 | } |
2b008701 CF |
2020 | DebugSetProcessKillOnExit (FALSE); |
2021 | ||
02cc9f49 | 2022 | if (detached && from_tty) |
24e60978 | 2023 | { |
a121b7c1 | 2024 | const char *exec_file = get_exec_file (0); |
24e60978 SC |
2025 | if (exec_file == 0) |
2026 | exec_file = ""; | |
d50a0ce2 CV |
2027 | printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file, |
2028 | (unsigned) current_event.dwProcessId); | |
24e60978 | 2029 | } |
7f9f62ba | 2030 | |
df7e5265 | 2031 | x86_cleanup_dregs (); |
39f77062 | 2032 | inferior_ptid = null_ptid; |
b7a08269 | 2033 | detach_inferior (inf); |
7f9f62ba | 2034 | |
f6ac5f3d | 2035 | maybe_unpush_target (); |
24e60978 SC |
2036 | } |
2037 | ||
47f7ffdb JB |
2038 | /* Try to determine the executable filename. |
2039 | ||
2040 | EXE_NAME_RET is a pointer to a buffer whose size is EXE_NAME_MAX_LEN. | |
2041 | ||
2042 | Upon success, the filename is stored inside EXE_NAME_RET, and | |
2043 | this function returns nonzero. | |
2044 | ||
2045 | Otherwise, this function returns zero and the contents of | |
2046 | EXE_NAME_RET is undefined. */ | |
2047 | ||
2048 | static int | |
2049 | windows_get_exec_module_filename (char *exe_name_ret, size_t exe_name_max_len) | |
2050 | { | |
2051 | DWORD len; | |
2052 | HMODULE dh_buf; | |
2053 | DWORD cbNeeded; | |
2054 | ||
2055 | cbNeeded = 0; | |
2056 | if (!EnumProcessModules (current_process_handle, &dh_buf, | |
2057 | sizeof (HMODULE), &cbNeeded) || !cbNeeded) | |
2058 | return 0; | |
2059 | ||
2060 | /* We know the executable is always first in the list of modules, | |
2061 | which we just fetched. So no need to fetch more. */ | |
2062 | ||
2063 | #ifdef __CYGWIN__ | |
2064 | { | |
2065 | /* Cygwin prefers that the path be in /x/y/z format, so extract | |
2066 | the filename into a temporary buffer first, and then convert it | |
2067 | to POSIX format into the destination buffer. */ | |
0ae534d2 | 2068 | cygwin_buf_t *pathbuf = (cygwin_buf_t *) alloca (exe_name_max_len * sizeof (cygwin_buf_t)); |
47f7ffdb JB |
2069 | |
2070 | len = GetModuleFileNameEx (current_process_handle, | |
2071 | dh_buf, pathbuf, exe_name_max_len); | |
2072 | if (len == 0) | |
2073 | error (_("Error getting executable filename: %u."), | |
2074 | (unsigned) GetLastError ()); | |
2075 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, exe_name_ret, | |
2076 | exe_name_max_len) < 0) | |
2077 | error (_("Error converting executable filename to POSIX: %d."), errno); | |
2078 | } | |
2079 | #else | |
2080 | len = GetModuleFileNameEx (current_process_handle, | |
2081 | dh_buf, exe_name_ret, exe_name_max_len); | |
2082 | if (len == 0) | |
2083 | error (_("Error getting executable filename: %u."), | |
2084 | (unsigned) GetLastError ()); | |
2085 | #endif | |
2086 | ||
2087 | return 1; /* success */ | |
2088 | } | |
2089 | ||
2090 | /* The pid_to_exec_file target_ops method for this platform. */ | |
2091 | ||
f6ac5f3d PA |
2092 | char * |
2093 | windows_nat_target::pid_to_exec_file (int pid) | |
47216e51 | 2094 | { |
b3c613f2 | 2095 | static char path[__PMAX]; |
10325bc5 | 2096 | #ifdef __CYGWIN__ |
581e13c1 | 2097 | /* Try to find exe name as symlink target of /proc/<pid>/exe. */ |
33605d39 CF |
2098 | int nchars; |
2099 | char procexe[sizeof ("/proc/4294967295/exe")]; | |
08850b56 PM |
2100 | |
2101 | xsnprintf (procexe, sizeof (procexe), "/proc/%u/exe", pid); | |
33605d39 CF |
2102 | nchars = readlink (procexe, path, sizeof(path)); |
2103 | if (nchars > 0 && nchars < sizeof (path)) | |
47216e51 | 2104 | { |
33605d39 CF |
2105 | path[nchars] = '\0'; /* Got it */ |
2106 | return path; | |
47216e51 | 2107 | } |
10325bc5 PA |
2108 | #endif |
2109 | ||
33605d39 | 2110 | /* If we get here then either Cygwin is hosed, this isn't a Cygwin version |
581e13c1 | 2111 | of gdb, or we're trying to debug a non-Cygwin windows executable. */ |
47f7ffdb | 2112 | if (!windows_get_exec_module_filename (path, sizeof (path))) |
33605d39 CF |
2113 | path[0] = '\0'; |
2114 | ||
2115 | return path; | |
47216e51 CV |
2116 | } |
2117 | ||
24e60978 SC |
2118 | /* Print status information about what we're accessing. */ |
2119 | ||
f6ac5f3d PA |
2120 | void |
2121 | windows_nat_target::files_info () | |
24e60978 | 2122 | { |
181e7f93 PA |
2123 | struct inferior *inf = current_inferior (); |
2124 | ||
24e60978 | 2125 | printf_unfiltered ("\tUsing the running image of %s %s.\n", |
181e7f93 | 2126 | inf->attach_flag ? "attached" : "child", |
a068643d | 2127 | target_pid_to_str (inferior_ptid).c_str ()); |
24e60978 SC |
2128 | } |
2129 | ||
cd44747c PM |
2130 | /* Modify CreateProcess parameters for use of a new separate console. |
2131 | Parameters are: | |
2132 | *FLAGS: DWORD parameter for general process creation flags. | |
2133 | *SI: STARTUPINFO structure, for which the console window size and | |
2134 | console buffer size is filled in if GDB is running in a console. | |
2135 | to create the new console. | |
2136 | The size of the used font is not available on all versions of | |
2137 | Windows OS. Furthermore, the current font might not be the default | |
2138 | font, but this is still better than before. | |
2139 | If the windows and buffer sizes are computed, | |
2140 | SI->DWFLAGS is changed so that this information is used | |
2141 | by CreateProcess function. */ | |
2142 | ||
2143 | static void | |
2144 | windows_set_console_info (STARTUPINFO *si, DWORD *flags) | |
2145 | { | |
2146 | HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE, | |
2147 | FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0); | |
2148 | ||
2149 | if (hconsole != INVALID_HANDLE_VALUE) | |
2150 | { | |
2151 | CONSOLE_SCREEN_BUFFER_INFO sbinfo; | |
2152 | COORD font_size; | |
2153 | CONSOLE_FONT_INFO cfi; | |
2154 | ||
2155 | GetCurrentConsoleFont (hconsole, FALSE, &cfi); | |
2156 | font_size = GetConsoleFontSize (hconsole, cfi.nFont); | |
2157 | GetConsoleScreenBufferInfo(hconsole, &sbinfo); | |
2158 | si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1; | |
2159 | si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1; | |
2160 | if (font_size.X) | |
2161 | si->dwXSize *= font_size.X; | |
2162 | else | |
2163 | si->dwXSize *= 8; | |
2164 | if (font_size.Y) | |
2165 | si->dwYSize *= font_size.Y; | |
2166 | else | |
2167 | si->dwYSize *= 12; | |
2168 | si->dwXCountChars = sbinfo.dwSize.X; | |
2169 | si->dwYCountChars = sbinfo.dwSize.Y; | |
2170 | si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS; | |
2171 | } | |
2172 | *flags |= CREATE_NEW_CONSOLE; | |
2173 | } | |
2174 | ||
c93dbcba EZ |
2175 | #ifndef __CYGWIN__ |
2176 | /* Function called by qsort to sort environment strings. */ | |
2177 | ||
2178 | static int | |
2179 | envvar_cmp (const void *a, const void *b) | |
2180 | { | |
2181 | const char **p = (const char **) a; | |
2182 | const char **q = (const char **) b; | |
2183 | return strcasecmp (*p, *q); | |
2184 | } | |
2185 | #endif | |
2186 | ||
b7ff339d CV |
2187 | #ifdef __CYGWIN__ |
2188 | static void | |
2189 | clear_win32_environment (char **env) | |
2190 | { | |
2191 | int i; | |
2192 | size_t len; | |
2193 | wchar_t *copy = NULL, *equalpos; | |
2194 | ||
2195 | for (i = 0; env[i] && *env[i]; i++) | |
2196 | { | |
2197 | len = mbstowcs (NULL, env[i], 0) + 1; | |
2198 | copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t)); | |
2199 | mbstowcs (copy, env[i], len); | |
2200 | equalpos = wcschr (copy, L'='); | |
2201 | if (equalpos) | |
2202 | *equalpos = L'\0'; | |
2203 | SetEnvironmentVariableW (copy, NULL); | |
2204 | } | |
2205 | xfree (copy); | |
2206 | } | |
2207 | #endif | |
2208 | ||
8ba42bc5 EZ |
2209 | #ifndef __CYGWIN__ |
2210 | ||
2211 | /* Redirection of inferior I/O streams for native MS-Windows programs. | |
2212 | Unlike on Unix, where this is handled by invoking the inferior via | |
2213 | the shell, on MS-Windows we need to emulate the cmd.exe shell. | |
2214 | ||
2215 | The official documentation of the cmd.exe redirection features is here: | |
2216 | ||
2217 | http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx | |
2218 | ||
2219 | (That page talks about Windows XP, but there's no newer | |
2220 | documentation, so we assume later versions of cmd.exe didn't change | |
2221 | anything.) | |
2222 | ||
2223 | Caveat: the documentation on that page seems to include a few lies. | |
2224 | For example, it describes strange constructs 1<&2 and 2<&1, which | |
2225 | seem to work only when 1>&2 resp. 2>&1 would make sense, and so I | |
2226 | think the cmd.exe parser of the redirection symbols simply doesn't | |
2227 | care about the < vs > distinction in these cases. Therefore, the | |
2228 | supported features are explicitly documented below. | |
2229 | ||
2230 | The emulation below aims at supporting all the valid use cases | |
2231 | supported by cmd.exe, which include: | |
2232 | ||
2233 | < FILE redirect standard input from FILE | |
2234 | 0< FILE redirect standard input from FILE | |
2235 | <&N redirect standard input from file descriptor N | |
2236 | 0<&N redirect standard input from file descriptor N | |
2237 | > FILE redirect standard output to FILE | |
2238 | >> FILE append standard output to FILE | |
2239 | 1>> FILE append standard output to FILE | |
2240 | >&N redirect standard output to file descriptor N | |
2241 | 1>&N redirect standard output to file descriptor N | |
2242 | >>&N append standard output to file descriptor N | |
2243 | 1>>&N append standard output to file descriptor N | |
2244 | 2> FILE redirect standard error to FILE | |
2245 | 2>> FILE append standard error to FILE | |
2246 | 2>&N redirect standard error to file descriptor N | |
2247 | 2>>&N append standard error to file descriptor N | |
2248 | ||
2249 | Note that using N > 2 in the above construct is supported, but | |
2250 | requires that the corresponding file descriptor be open by some | |
2251 | means elsewhere or outside GDB. Also note that using ">&0" or | |
2252 | "<&2" will generally fail, because the file descriptor redirected | |
2253 | from is normally open in an incompatible mode (e.g., FD 0 is open | |
2254 | for reading only). IOW, use of such tricks is not recommended; | |
2255 | you are on your own. | |
2256 | ||
2257 | We do NOT support redirection of file descriptors above 2, as in | |
2258 | "3>SOME-FILE", because MinGW compiled programs don't (supporting | |
2259 | that needs special handling in the startup code that MinGW | |
2260 | doesn't have). Pipes are also not supported. | |
2261 | ||
2262 | As for invalid use cases, where the redirection contains some | |
2263 | error, the emulation below will detect that and produce some | |
2264 | error and/or failure. But the behavior in those cases is not | |
2265 | bug-for-bug compatible with what cmd.exe does in those cases. | |
2266 | That's because what cmd.exe does then is not well defined, and | |
2267 | seems to be a side effect of the cmd.exe parsing of the command | |
2268 | line more than anything else. For example, try redirecting to an | |
2269 | invalid file name, as in "> foo:bar". | |
2270 | ||
2271 | There are also minor syntactic deviations from what cmd.exe does | |
2272 | in some corner cases. For example, it doesn't support the likes | |
2273 | of "> &foo" to mean redirect to file named literally "&foo"; we | |
2274 | do support that here, because that, too, sounds like some issue | |
2275 | with the cmd.exe parser. Another nicety is that we support | |
2276 | redirection targets that use file names with forward slashes, | |
2277 | something cmd.exe doesn't -- this comes in handy since GDB | |
2278 | file-name completion can be used when typing the command line for | |
2279 | the inferior. */ | |
2280 | ||
2281 | /* Support routines for redirecting standard handles of the inferior. */ | |
2282 | ||
2283 | /* Parse a single redirection spec, open/duplicate the specified | |
2284 | file/fd, and assign the appropriate value to one of the 3 standard | |
2285 | file descriptors. */ | |
2286 | static int | |
2287 | redir_open (const char *redir_string, int *inp, int *out, int *err) | |
2288 | { | |
2289 | int *fd, ref_fd = -2; | |
2290 | int mode; | |
2291 | const char *fname = redir_string + 1; | |
2292 | int rc = *redir_string; | |
2293 | ||
2294 | switch (rc) | |
2295 | { | |
2296 | case '0': | |
2297 | fname++; | |
2298 | /* FALLTHROUGH */ | |
2299 | case '<': | |
2300 | fd = inp; | |
2301 | mode = O_RDONLY; | |
2302 | break; | |
2303 | case '1': case '2': | |
2304 | fname++; | |
2305 | /* FALLTHROUGH */ | |
2306 | case '>': | |
2307 | fd = (rc == '2') ? err : out; | |
2308 | mode = O_WRONLY | O_CREAT; | |
2309 | if (*fname == '>') | |
2310 | { | |
2311 | fname++; | |
2312 | mode |= O_APPEND; | |
2313 | } | |
2314 | else | |
2315 | mode |= O_TRUNC; | |
2316 | break; | |
2317 | default: | |
2318 | return -1; | |
2319 | } | |
2320 | ||
2321 | if (*fname == '&' && '0' <= fname[1] && fname[1] <= '9') | |
2322 | { | |
2323 | /* A reference to a file descriptor. */ | |
2324 | char *fdtail; | |
2325 | ref_fd = (int) strtol (fname + 1, &fdtail, 10); | |
2326 | if (fdtail > fname + 1 && *fdtail == '\0') | |
2327 | { | |
2328 | /* Don't allow redirection when open modes are incompatible. */ | |
2329 | if ((ref_fd == 0 && (fd == out || fd == err)) | |
2330 | || ((ref_fd == 1 || ref_fd == 2) && fd == inp)) | |
2331 | { | |
2332 | errno = EPERM; | |
2333 | return -1; | |
2334 | } | |
2335 | if (ref_fd == 0) | |
2336 | ref_fd = *inp; | |
2337 | else if (ref_fd == 1) | |
2338 | ref_fd = *out; | |
2339 | else if (ref_fd == 2) | |
2340 | ref_fd = *err; | |
2341 | } | |
2342 | else | |
2343 | { | |
2344 | errno = EBADF; | |
2345 | return -1; | |
2346 | } | |
2347 | } | |
2348 | else | |
2349 | fname++; /* skip the separator space */ | |
2350 | /* If the descriptor is already open, close it. This allows | |
2351 | multiple specs of redirections for the same stream, which is | |
2352 | somewhat nonsensical, but still valid and supported by cmd.exe. | |
2353 | (But cmd.exe only opens a single file in this case, the one | |
2354 | specified by the last redirection spec on the command line.) */ | |
2355 | if (*fd >= 0) | |
2356 | _close (*fd); | |
2357 | if (ref_fd == -2) | |
2358 | { | |
2359 | *fd = _open (fname, mode, _S_IREAD | _S_IWRITE); | |
2360 | if (*fd < 0) | |
2361 | return -1; | |
2362 | } | |
2363 | else if (ref_fd == -1) | |
2364 | *fd = -1; /* reset to default destination */ | |
2365 | else | |
2366 | { | |
2367 | *fd = _dup (ref_fd); | |
2368 | if (*fd < 0) | |
2369 | return -1; | |
2370 | } | |
2371 | /* _open just sets a flag for O_APPEND, which won't be passed to the | |
2372 | inferior, so we need to actually move the file pointer. */ | |
2373 | if ((mode & O_APPEND) != 0) | |
2374 | _lseek (*fd, 0L, SEEK_END); | |
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | /* Canonicalize a single redirection spec and set up the corresponding | |
2379 | file descriptor as specified. */ | |
2380 | static int | |
2381 | redir_set_redirection (const char *s, int *inp, int *out, int *err) | |
2382 | { | |
2383 | char buf[__PMAX + 2 + 5]; /* extra space for quotes & redirection string */ | |
2384 | char *d = buf; | |
2385 | const char *start = s; | |
2386 | int quote = 0; | |
2387 | ||
2388 | *d++ = *s++; /* copy the 1st character, < or > or a digit */ | |
2389 | if ((*start == '>' || *start == '1' || *start == '2') | |
2390 | && *s == '>') | |
2391 | { | |
2392 | *d++ = *s++; | |
2393 | if (*s == '>' && *start != '>') | |
2394 | *d++ = *s++; | |
2395 | } | |
2396 | else if (*start == '0' && *s == '<') | |
2397 | *d++ = *s++; | |
2398 | /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */ | |
2399 | if (*s != '&') | |
2400 | { | |
2401 | while (isspace (*s)) /* skip whitespace before file name */ | |
2402 | s++; | |
2403 | *d++ = ' '; /* separate file name with a single space */ | |
2404 | } | |
2405 | ||
2406 | /* Copy the file name. */ | |
2407 | while (*s) | |
2408 | { | |
2409 | /* Remove quoting characters from the file name in buf[]. */ | |
2410 | if (*s == '"') /* could support '..' quoting here */ | |
2411 | { | |
2412 | if (!quote) | |
2413 | quote = *s++; | |
2414 | else if (*s == quote) | |
2415 | { | |
2416 | quote = 0; | |
2417 | s++; | |
2418 | } | |
2419 | else | |
2420 | *d++ = *s++; | |
2421 | } | |
2422 | else if (*s == '\\') | |
2423 | { | |
2424 | if (s[1] == '"') /* could support '..' here */ | |
2425 | s++; | |
2426 | *d++ = *s++; | |
2427 | } | |
2428 | else if (isspace (*s) && !quote) | |
2429 | break; | |
2430 | else | |
2431 | *d++ = *s++; | |
2432 | if (d - buf >= sizeof (buf) - 1) | |
2433 | { | |
2434 | errno = ENAMETOOLONG; | |
2435 | return 0; | |
2436 | } | |
2437 | } | |
2438 | *d = '\0'; | |
2439 | ||
2440 | /* Windows doesn't allow redirection characters in file names, so we | |
2441 | can bail out early if they use them, or if there's no target file | |
2442 | name after the redirection symbol. */ | |
2443 | if (d[-1] == '>' || d[-1] == '<') | |
2444 | { | |
2445 | errno = ENOENT; | |
2446 | return 0; | |
2447 | } | |
2448 | if (redir_open (buf, inp, out, err) == 0) | |
2449 | return s - start; | |
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | /* Parse the command line for redirection specs and prepare the file | |
2454 | descriptors for the 3 standard streams accordingly. */ | |
2455 | static bool | |
2456 | redirect_inferior_handles (const char *cmd_orig, char *cmd, | |
2457 | int *inp, int *out, int *err) | |
2458 | { | |
2459 | const char *s = cmd_orig; | |
2460 | char *d = cmd; | |
2461 | int quote = 0; | |
2462 | bool retval = false; | |
2463 | ||
2464 | while (isspace (*s)) | |
2465 | *d++ = *s++; | |
2466 | ||
2467 | while (*s) | |
2468 | { | |
2469 | if (*s == '"') /* could also support '..' quoting here */ | |
2470 | { | |
2471 | if (!quote) | |
2472 | quote = *s; | |
2473 | else if (*s == quote) | |
2474 | quote = 0; | |
2475 | } | |
2476 | else if (*s == '\\') | |
2477 | { | |
2478 | if (s[1] == '"') /* escaped quote char */ | |
2479 | s++; | |
2480 | } | |
2481 | else if (!quote) | |
2482 | { | |
2483 | /* Process a single redirection candidate. */ | |
2484 | if (*s == '<' || *s == '>' | |
2485 | || ((*s == '1' || *s == '2') && s[1] == '>') | |
2486 | || (*s == '0' && s[1] == '<')) | |
2487 | { | |
2488 | int skip = redir_set_redirection (s, inp, out, err); | |
2489 | ||
2490 | if (skip <= 0) | |
2491 | return false; | |
2492 | retval = true; | |
2493 | s += skip; | |
2494 | } | |
2495 | } | |
2496 | if (*s) | |
2497 | *d++ = *s++; | |
2498 | } | |
2499 | *d = '\0'; | |
2500 | return retval; | |
2501 | } | |
2502 | #endif /* !__CYGWIN__ */ | |
2503 | ||
dc05df57 | 2504 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
2505 | EXEC_FILE is the file to run. |
2506 | ALLARGS is a string containing the arguments to the program. | |
2507 | ENV is the environment vector to pass. Errors reported with error(). */ | |
2508 | ||
f6ac5f3d PA |
2509 | void |
2510 | windows_nat_target::create_inferior (const char *exec_file, | |
2511 | const std::string &origallargs, | |
2512 | char **in_env, int from_tty) | |
24e60978 | 2513 | { |
b3c613f2 | 2514 | STARTUPINFO si; |
41b4aadc | 2515 | #ifdef __CYGWIN__ |
b3c613f2 CF |
2516 | cygwin_buf_t real_path[__PMAX]; |
2517 | cygwin_buf_t shell[__PMAX]; /* Path to shell */ | |
d092c5a2 | 2518 | cygwin_buf_t infcwd[__PMAX]; |
d0d0ab16 | 2519 | const char *sh; |
b3c613f2 CF |
2520 | cygwin_buf_t *toexec; |
2521 | cygwin_buf_t *cygallargs; | |
2522 | cygwin_buf_t *args; | |
b7ff339d CV |
2523 | char **old_env = NULL; |
2524 | PWCHAR w32_env; | |
d0d0ab16 | 2525 | size_t len; |
2becadee CF |
2526 | int tty; |
2527 | int ostdin, ostdout, ostderr; | |
8ba42bc5 | 2528 | #else /* !__CYGWIN__ */ |
b3c613f2 | 2529 | char shell[__PMAX]; /* Path to shell */ |
5430098f | 2530 | const char *toexec; |
8ba42bc5 EZ |
2531 | char *args, *allargs_copy; |
2532 | size_t args_len, allargs_len; | |
2533 | int fd_inp = -1, fd_out = -1, fd_err = -1; | |
2534 | HANDLE tty = INVALID_HANDLE_VALUE; | |
8ba42bc5 | 2535 | bool redirected = false; |
c93dbcba EZ |
2536 | char *w32env; |
2537 | char *temp; | |
2538 | size_t envlen; | |
2539 | int i; | |
2540 | size_t envsize; | |
2541 | char **env; | |
8ba42bc5 | 2542 | #endif /* !__CYGWIN__ */ |
096c92dd | 2543 | const char *allargs = origallargs.c_str (); |
d0d0ab16 CV |
2544 | PROCESS_INFORMATION pi; |
2545 | BOOL ret; | |
2546 | DWORD flags = 0; | |
3cb3b8df | 2547 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
24e60978 SC |
2548 | |
2549 | if (!exec_file) | |
8a3fe4f8 | 2550 | error (_("No executable specified, use `target exec'.")); |
24e60978 | 2551 | |
d092c5a2 SDJ |
2552 | const char *inferior_cwd = get_inferior_cwd (); |
2553 | std::string expanded_infcwd; | |
2554 | if (inferior_cwd != NULL) | |
2555 | { | |
2556 | expanded_infcwd = gdb_tilde_expand (inferior_cwd); | |
2557 | /* Mirror slashes on inferior's cwd. */ | |
2558 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), | |
2559 | '/', '\\'); | |
2560 | inferior_cwd = expanded_infcwd.c_str (); | |
2561 | } | |
2562 | ||
24e60978 SC |
2563 | memset (&si, 0, sizeof (si)); |
2564 | si.cb = sizeof (si); | |
2565 | ||
d0d0ab16 CV |
2566 | if (new_group) |
2567 | flags |= CREATE_NEW_PROCESS_GROUP; | |
2568 | ||
2569 | if (new_console) | |
cd44747c | 2570 | windows_set_console_info (&si, &flags); |
d0d0ab16 | 2571 | |
10325bc5 | 2572 | #ifdef __CYGWIN__ |
349b409f | 2573 | if (!useshell) |
dfe7f3ac | 2574 | { |
d0d0ab16 CV |
2575 | flags |= DEBUG_ONLY_THIS_PROCESS; |
2576 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path, | |
b3c613f2 | 2577 | __PMAX * sizeof (cygwin_buf_t)) < 0) |
d0d0ab16 | 2578 | error (_("Error starting executable: %d"), errno); |
dfe7f3ac | 2579 | toexec = real_path; |
b3c613f2 | 2580 | #ifdef __USEWIDE |
d0d0ab16 CV |
2581 | len = mbstowcs (NULL, allargs, 0) + 1; |
2582 | if (len == (size_t) -1) | |
2583 | error (_("Error starting executable: %d"), errno); | |
2584 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2585 | mbstowcs (cygallargs, allargs, len); | |
8ba42bc5 | 2586 | #else /* !__USEWIDE */ |
60c5c021 | 2587 | cygallargs = allargs; |
b3c613f2 | 2588 | #endif |
dfe7f3ac CF |
2589 | } |
2590 | else | |
2591 | { | |
974e6844 | 2592 | sh = get_shell (); |
b3c613f2 | 2593 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0) |
d0d0ab16 | 2594 | error (_("Error starting executable via shell: %d"), errno); |
b3c613f2 | 2595 | #ifdef __USEWIDE |
d0d0ab16 CV |
2596 | len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0) |
2597 | + mbstowcs (NULL, allargs, 0) + 2; | |
2598 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2599 | swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs); | |
8ba42bc5 | 2600 | #else /* !__USEWIDE */ |
08850b56 PM |
2601 | len = (sizeof (" -c 'exec '") + strlen (exec_file) |
2602 | + strlen (allargs) + 2); | |
2603 | cygallargs = (char *) alloca (len); | |
2604 | xsnprintf (cygallargs, len, " -c 'exec %s %s'", exec_file, allargs); | |
8ba42bc5 | 2605 | #endif /* __USEWIDE */ |
dfe7f3ac | 2606 | toexec = shell; |
d0d0ab16 | 2607 | flags |= DEBUG_PROCESS; |
dfe7f3ac | 2608 | } |
b3c613f2 | 2609 | |
d092c5a2 SDJ |
2610 | if (inferior_cwd != NULL |
2611 | && cygwin_conv_path (CCP_POSIX_TO_WIN_W, inferior_cwd, | |
2612 | infcwd, strlen (inferior_cwd)) < 0) | |
2613 | error (_("Error converting inferior cwd: %d"), errno); | |
2614 | ||
b3c613f2 CF |
2615 | #ifdef __USEWIDE |
2616 | args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2) | |
2617 | * sizeof (wchar_t)); | |
d0d0ab16 CV |
2618 | wcscpy (args, toexec); |
2619 | wcscat (args, L" "); | |
2620 | wcscat (args, cygallargs); | |
8ba42bc5 | 2621 | #else /* !__USEWIDE */ |
b3c613f2 CF |
2622 | args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2); |
2623 | strcpy (args, toexec); | |
2624 | strcat (args, " "); | |
2625 | strcat (args, cygallargs); | |
8ba42bc5 | 2626 | #endif /* !__USEWIDE */ |
b3c613f2 | 2627 | |
b7ff339d CV |
2628 | #ifdef CW_CVT_ENV_TO_WINENV |
2629 | /* First try to create a direct Win32 copy of the POSIX environment. */ | |
2630 | w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env); | |
2631 | if (w32_env != (PWCHAR) -1) | |
2632 | flags |= CREATE_UNICODE_ENVIRONMENT; | |
2633 | else | |
2634 | /* If that fails, fall back to old method tweaking GDB's environment. */ | |
8ba42bc5 | 2635 | #endif /* CW_CVT_ENV_TO_WINENV */ |
b7ff339d CV |
2636 | { |
2637 | /* Reset all Win32 environment variables to avoid leftover on next run. */ | |
2638 | clear_win32_environment (environ); | |
2639 | /* Prepare the environment vars for CreateProcess. */ | |
2640 | old_env = environ; | |
2641 | environ = in_env; | |
2642 | cygwin_internal (CW_SYNC_WINENV); | |
2643 | w32_env = NULL; | |
2644 | } | |
1750a5ef | 2645 | |
2becadee CF |
2646 | if (!inferior_io_terminal) |
2647 | tty = ostdin = ostdout = ostderr = -1; | |
2648 | else | |
2649 | { | |
2650 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
2651 | if (tty < 0) | |
2652 | { | |
2653 | print_sys_errmsg (inferior_io_terminal, errno); | |
2654 | ostdin = ostdout = ostderr = -1; | |
2655 | } | |
2656 | else | |
2657 | { | |
2658 | ostdin = dup (0); | |
2659 | ostdout = dup (1); | |
2660 | ostderr = dup (2); | |
2661 | dup2 (tty, 0); | |
2662 | dup2 (tty, 1); | |
2663 | dup2 (tty, 2); | |
2664 | } | |
2665 | } | |
d0d0ab16 CV |
2666 | |
2667 | windows_init_thread_list (); | |
b3c613f2 CF |
2668 | ret = CreateProcess (0, |
2669 | args, /* command line */ | |
2670 | NULL, /* Security */ | |
2671 | NULL, /* thread */ | |
2672 | TRUE, /* inherit handles */ | |
2673 | flags, /* start flags */ | |
b7ff339d | 2674 | w32_env, /* environment */ |
d092c5a2 SDJ |
2675 | inferior_cwd != NULL ? infcwd : NULL, /* current |
2676 | directory */ | |
b3c613f2 CF |
2677 | &si, |
2678 | &pi); | |
b7ff339d CV |
2679 | if (w32_env) |
2680 | /* Just free the Win32 environment, if it could be created. */ | |
2681 | free (w32_env); | |
2682 | else | |
2683 | { | |
2684 | /* Reset all environment variables to avoid leftover on next run. */ | |
2685 | clear_win32_environment (in_env); | |
2686 | /* Restore normal GDB environment variables. */ | |
2687 | environ = old_env; | |
2688 | cygwin_internal (CW_SYNC_WINENV); | |
2689 | } | |
2690 | ||
d0d0ab16 CV |
2691 | if (tty >= 0) |
2692 | { | |
6af79d7b | 2693 | ::close (tty); |
d0d0ab16 CV |
2694 | dup2 (ostdin, 0); |
2695 | dup2 (ostdout, 1); | |
2696 | dup2 (ostderr, 2); | |
6af79d7b JT |
2697 | ::close (ostdin); |
2698 | ::close (ostdout); | |
2699 | ::close (ostderr); | |
d0d0ab16 | 2700 | } |
8ba42bc5 EZ |
2701 | #else /* !__CYGWIN__ */ |
2702 | allargs_len = strlen (allargs); | |
2703 | allargs_copy = strcpy ((char *) alloca (allargs_len + 1), allargs); | |
2704 | if (strpbrk (allargs_copy, "<>") != NULL) | |
2705 | { | |
2706 | int e = errno; | |
2707 | errno = 0; | |
2708 | redirected = | |
2709 | redirect_inferior_handles (allargs, allargs_copy, | |
2710 | &fd_inp, &fd_out, &fd_err); | |
2711 | if (errno) | |
2712 | warning (_("Error in redirection: %s."), strerror (errno)); | |
2713 | else | |
2714 | errno = e; | |
2715 | allargs_len = strlen (allargs_copy); | |
2716 | } | |
2717 | /* If not all the standard streams are redirected by the command | |
2718 | line, use inferior_io_terminal for those which aren't. */ | |
2719 | if (inferior_io_terminal | |
2720 | && !(fd_inp >= 0 && fd_out >= 0 && fd_err >= 0)) | |
41b4aadc CF |
2721 | { |
2722 | SECURITY_ATTRIBUTES sa; | |
2723 | sa.nLength = sizeof(sa); | |
2724 | sa.lpSecurityDescriptor = 0; | |
2725 | sa.bInheritHandle = TRUE; | |
2726 | tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE, | |
2727 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
2728 | if (tty == INVALID_HANDLE_VALUE) | |
2729 | warning (_("Warning: Failed to open TTY %s, error %#x."), | |
2730 | inferior_io_terminal, (unsigned) GetLastError ()); | |
8ba42bc5 EZ |
2731 | } |
2732 | if (redirected || tty != INVALID_HANDLE_VALUE) | |
2733 | { | |
2734 | if (fd_inp >= 0) | |
2735 | si.hStdInput = (HANDLE) _get_osfhandle (fd_inp); | |
2736 | else if (tty != INVALID_HANDLE_VALUE) | |
2737 | si.hStdInput = tty; | |
41b4aadc | 2738 | else |
8ba42bc5 EZ |
2739 | si.hStdInput = GetStdHandle (STD_INPUT_HANDLE); |
2740 | if (fd_out >= 0) | |
2741 | si.hStdOutput = (HANDLE) _get_osfhandle (fd_out); | |
2742 | else if (tty != INVALID_HANDLE_VALUE) | |
2743 | si.hStdOutput = tty; | |
2744 | else | |
2745 | si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
2746 | if (fd_err >= 0) | |
2747 | si.hStdError = (HANDLE) _get_osfhandle (fd_err); | |
2748 | else if (tty != INVALID_HANDLE_VALUE) | |
2749 | si.hStdError = tty; | |
2750 | else | |
2751 | si.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
2752 | si.dwFlags |= STARTF_USESTDHANDLES; | |
41b4aadc | 2753 | } |
2becadee | 2754 | |
8ba42bc5 EZ |
2755 | toexec = exec_file; |
2756 | /* Build the command line, a space-separated list of tokens where | |
2757 | the first token is the name of the module to be executed. | |
2758 | To avoid ambiguities introduced by spaces in the module name, | |
2759 | we quote it. */ | |
2760 | args_len = strlen (toexec) + 2 /* quotes */ + allargs_len + 2; | |
2761 | args = (char *) alloca (args_len); | |
2762 | xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs_copy); | |
2763 | ||
2764 | flags |= DEBUG_ONLY_THIS_PROCESS; | |
2765 | ||
c93dbcba EZ |
2766 | /* CreateProcess takes the environment list as a null terminated set of |
2767 | strings (i.e. two nulls terminate the list). */ | |
2768 | ||
2769 | /* Get total size for env strings. */ | |
2770 | for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++) | |
2771 | envlen += strlen (in_env[i]) + 1; | |
2772 | ||
2773 | envsize = sizeof (in_env[0]) * (i + 1); | |
2774 | env = (char **) alloca (envsize); | |
2775 | memcpy (env, in_env, envsize); | |
2776 | /* Windows programs expect the environment block to be sorted. */ | |
2777 | qsort (env, i, sizeof (char *), envvar_cmp); | |
2778 | ||
0ae1c716 | 2779 | w32env = (char *) alloca (envlen + 1); |
c93dbcba EZ |
2780 | |
2781 | /* Copy env strings into new buffer. */ | |
2782 | for (temp = w32env, i = 0; env[i] && *env[i]; i++) | |
2783 | { | |
2784 | strcpy (temp, env[i]); | |
2785 | temp += strlen (temp) + 1; | |
2786 | } | |
2787 | ||
2788 | /* Final nil string to terminate new env. */ | |
2789 | *temp = 0; | |
2790 | ||
dc05df57 | 2791 | windows_init_thread_list (); |
d0d0ab16 CV |
2792 | ret = CreateProcessA (0, |
2793 | args, /* command line */ | |
2794 | NULL, /* Security */ | |
2795 | NULL, /* thread */ | |
2796 | TRUE, /* inherit handles */ | |
2797 | flags, /* start flags */ | |
c93dbcba | 2798 | w32env, /* environment */ |
d092c5a2 | 2799 | inferior_cwd, /* current directory */ |
d0d0ab16 CV |
2800 | &si, |
2801 | &pi); | |
41b4aadc CF |
2802 | if (tty != INVALID_HANDLE_VALUE) |
2803 | CloseHandle (tty); | |
8ba42bc5 EZ |
2804 | if (fd_inp >= 0) |
2805 | _close (fd_inp); | |
2806 | if (fd_out >= 0) | |
2807 | _close (fd_out); | |
2808 | if (fd_err >= 0) | |
2809 | _close (fd_err); | |
2810 | #endif /* !__CYGWIN__ */ | |
2becadee | 2811 | |
24e60978 | 2812 | if (!ret) |
d50a0ce2 | 2813 | error (_("Error creating process %s, (error %u)."), |
8a3fe4f8 | 2814 | exec_file, (unsigned) GetLastError ()); |
24e60978 | 2815 | |
c1766e7d PM |
2816 | CloseHandle (pi.hThread); |
2817 | CloseHandle (pi.hProcess); | |
2818 | ||
dfe7f3ac CF |
2819 | if (useshell && shell[0] != '\0') |
2820 | saw_create = -1; | |
2821 | else | |
2822 | saw_create = 0; | |
2823 | ||
f6ac5f3d | 2824 | do_initial_windows_stuff (this, pi.dwProcessId, 0); |
d3a09475 | 2825 | |
17617f2d | 2826 | /* windows_continue (DBG_CONTINUE, -1, 0); */ |
24e60978 SC |
2827 | } |
2828 | ||
f6ac5f3d PA |
2829 | void |
2830 | windows_nat_target::mourn_inferior () | |
24e60978 | 2831 | { |
17617f2d | 2832 | (void) windows_continue (DBG_CONTINUE, -1, 0); |
df7e5265 | 2833 | x86_cleanup_dregs(); |
bf25528d CF |
2834 | if (open_process_used) |
2835 | { | |
2836 | CHECK (CloseHandle (current_process_handle)); | |
2837 | open_process_used = 0; | |
2838 | } | |
f6ac5f3d | 2839 | inf_child_target::mourn_inferior (); |
24e60978 SC |
2840 | } |
2841 | ||
24e60978 | 2842 | /* Send a SIGINT to the process group. This acts just like the user typed a |
581e13c1 | 2843 | ^C on the controlling terminal. */ |
24e60978 | 2844 | |
f6ac5f3d PA |
2845 | void |
2846 | windows_nat_target::interrupt () | |
24e60978 | 2847 | { |
1ef980b9 | 2848 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 2849 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 2850 | registers_changed (); /* refresh register state */ |
24e60978 SC |
2851 | } |
2852 | ||
44f38867 PA |
2853 | /* Helper for windows_xfer_partial that handles memory transfers. |
2854 | Arguments are like target_xfer_partial. */ | |
2855 | ||
9b409511 | 2856 | static enum target_xfer_status |
44f38867 | 2857 | windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2858 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) |
24e60978 | 2859 | { |
5732a500 | 2860 | SIZE_T done = 0; |
44f38867 | 2861 | BOOL success; |
9e52adf9 | 2862 | DWORD lasterror = 0; |
44f38867 PA |
2863 | |
2864 | if (writebuf != NULL) | |
24e60978 | 2865 | { |
a2388568 | 2866 | DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n", |
b55e14c7 | 2867 | pulongest (len), core_addr_to_string (memaddr))); |
44f38867 PA |
2868 | success = WriteProcessMemory (current_process_handle, |
2869 | (LPVOID) (uintptr_t) memaddr, writebuf, | |
2870 | len, &done); | |
9e52adf9 | 2871 | if (!success) |
7126d5c8 | 2872 | lasterror = GetLastError (); |
2b008701 | 2873 | FlushInstructionCache (current_process_handle, |
2c647436 | 2874 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
2875 | } |
2876 | else | |
2877 | { | |
a2388568 | 2878 | DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n", |
b55e14c7 | 2879 | pulongest (len), core_addr_to_string (memaddr))); |
44f38867 PA |
2880 | success = ReadProcessMemory (current_process_handle, |
2881 | (LPCVOID) (uintptr_t) memaddr, readbuf, | |
2882 | len, &done); | |
9e52adf9 | 2883 | if (!success) |
7126d5c8 | 2884 | lasterror = GetLastError (); |
24e60978 | 2885 | } |
9b409511 | 2886 | *xfered_len = (ULONGEST) done; |
9e52adf9 | 2887 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
9b409511 | 2888 | return TARGET_XFER_OK; |
9e52adf9 | 2889 | else |
9b409511 | 2890 | return success ? TARGET_XFER_OK : TARGET_XFER_E_IO; |
24e60978 SC |
2891 | } |
2892 | ||
f6ac5f3d PA |
2893 | void |
2894 | windows_nat_target::kill () | |
24e60978 | 2895 | { |
3cee93ac CF |
2896 | CHECK (TerminateProcess (current_process_handle, 0)); |
2897 | ||
b5edcb45 ILT |
2898 | for (;;) |
2899 | { | |
17617f2d | 2900 | if (!windows_continue (DBG_CONTINUE, -1, 1)) |
b5edcb45 | 2901 | break; |
3cee93ac | 2902 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 2903 | break; |
3cee93ac | 2904 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
2905 | break; |
2906 | } | |
2907 | ||
9eee20eb | 2908 | target_mourn_inferior (inferior_ptid); /* Or just windows_mourn_inferior? */ |
24e60978 SC |
2909 | } |
2910 | ||
f6ac5f3d PA |
2911 | void |
2912 | windows_nat_target::close () | |
24e60978 | 2913 | { |
dc05df57 | 2914 | DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n", |
e99b03dc | 2915 | inferior_ptid.pid ())); |
24e60978 | 2916 | } |
1ef980b9 | 2917 | |
581e13c1 | 2918 | /* Convert pid to printable format. */ |
a068643d | 2919 | std::string |
f6ac5f3d | 2920 | windows_nat_target::pid_to_str (ptid_t ptid) |
24e60978 | 2921 | { |
cc6bcb54 | 2922 | if (ptid.tid () != 0) |
a068643d | 2923 | return string_printf ("Thread %d.0x%lx", ptid.pid (), ptid.tid ()); |
2dc38344 PA |
2924 | |
2925 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2926 | } |
2927 | ||
9b409511 | 2928 | static enum target_xfer_status |
dc05df57 | 2929 | windows_xfer_shared_libraries (struct target_ops *ops, |
9b409511 YQ |
2930 | enum target_object object, const char *annex, |
2931 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2932 | ULONGEST offset, ULONGEST len, | |
2933 | ULONGEST *xfered_len) | |
3cb8e7f6 | 2934 | { |
de1b3c3d PA |
2935 | struct obstack obstack; |
2936 | const char *buf; | |
2937 | LONGEST len_avail; | |
3cb8e7f6 | 2938 | struct so_list *so; |
3cb8e7f6 | 2939 | |
de1b3c3d | 2940 | if (writebuf) |
2ed4b548 | 2941 | return TARGET_XFER_E_IO; |
3cb8e7f6 | 2942 | |
de1b3c3d PA |
2943 | obstack_init (&obstack); |
2944 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2945 | for (so = solib_start.next; so; so = so->next) | |
d0e449a1 SM |
2946 | { |
2947 | lm_info_windows *li = (lm_info_windows *) so->lm_info; | |
2948 | ||
2949 | windows_xfer_shared_library (so->so_name, (CORE_ADDR) | |
2950 | (uintptr_t) li->load_addr, | |
2951 | target_gdbarch (), &obstack); | |
2952 | } | |
de1b3c3d | 2953 | obstack_grow_str0 (&obstack, "</library-list>\n"); |
3cb8e7f6 | 2954 | |
0ae1c716 | 2955 | buf = (const char *) obstack_finish (&obstack); |
de1b3c3d PA |
2956 | len_avail = strlen (buf); |
2957 | if (offset >= len_avail) | |
49dc7f4b PM |
2958 | len= 0; |
2959 | else | |
2960 | { | |
2961 | if (len > len_avail - offset) | |
2962 | len = len_avail - offset; | |
2963 | memcpy (readbuf, buf + offset, len); | |
2964 | } | |
3cb8e7f6 | 2965 | |
de1b3c3d | 2966 | obstack_free (&obstack, NULL); |
9b409511 | 2967 | *xfered_len = (ULONGEST) len; |
0837c976 | 2968 | return len != 0 ? TARGET_XFER_OK : TARGET_XFER_EOF; |
3cb8e7f6 CF |
2969 | } |
2970 | ||
f6ac5f3d PA |
2971 | enum target_xfer_status |
2972 | windows_nat_target::xfer_partial (enum target_object object, | |
2973 | const char *annex, gdb_byte *readbuf, | |
2f4f025f TT |
2974 | const gdb_byte *writebuf, ULONGEST offset, |
2975 | ULONGEST len, ULONGEST *xfered_len) | |
3cb8e7f6 | 2976 | { |
de1b3c3d | 2977 | switch (object) |
3cb8e7f6 | 2978 | { |
de1b3c3d | 2979 | case TARGET_OBJECT_MEMORY: |
9b409511 | 2980 | return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
de1b3c3d PA |
2981 | |
2982 | case TARGET_OBJECT_LIBRARIES: | |
f6ac5f3d | 2983 | return windows_xfer_shared_libraries (this, object, annex, readbuf, |
9b409511 | 2984 | writebuf, offset, len, xfered_len); |
3929abe9 | 2985 | |
de1b3c3d | 2986 | default: |
2f4f025f | 2987 | if (beneath () == NULL) |
178d6a63 JB |
2988 | { |
2989 | /* This can happen when requesting the transfer of unsupported | |
2990 | objects before a program has been started (and therefore | |
2991 | with the current_target having no target beneath). */ | |
2992 | return TARGET_XFER_E_IO; | |
2993 | } | |
2f4f025f TT |
2994 | return beneath ()->xfer_partial (object, annex, |
2995 | readbuf, writebuf, offset, len, | |
2996 | xfered_len); | |
3929abe9 | 2997 | } |
02c5aecd CF |
2998 | } |
2999 | ||
711e434b PM |
3000 | /* Provide thread local base, i.e. Thread Information Block address. |
3001 | Returns 1 if ptid is found and sets *ADDR to thread_local_base. */ | |
3002 | ||
57810aa7 | 3003 | bool |
f6ac5f3d | 3004 | windows_nat_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 3005 | { |
876d1cd7 | 3006 | windows_thread_info *th; |
711e434b | 3007 | |
cc6bcb54 | 3008 | th = thread_rec (ptid.tid (), 0); |
711e434b | 3009 | if (th == NULL) |
57810aa7 | 3010 | return false; |
711e434b PM |
3011 | |
3012 | if (addr != NULL) | |
3013 | *addr = th->thread_local_base; | |
3014 | ||
57810aa7 | 3015 | return true; |
711e434b PM |
3016 | } |
3017 | ||
f6ac5f3d PA |
3018 | ptid_t |
3019 | windows_nat_target::get_ada_task_ptid (long lwp, long thread) | |
1e2f1c5c | 3020 | { |
e99b03dc | 3021 | return ptid_t (inferior_ptid.pid (), 0, lwp); |
1e2f1c5c JB |
3022 | } |
3023 | ||
24cdb46e РИ |
3024 | /* Implementation of the to_thread_name method. */ |
3025 | ||
f6ac5f3d PA |
3026 | const char * |
3027 | windows_nat_target::thread_name (struct thread_info *thr) | |
24cdb46e | 3028 | { |
cc6bcb54 | 3029 | return thread_rec (thr->ptid.tid (), 0)->name; |
24cdb46e РИ |
3030 | } |
3031 | ||
24e60978 SC |
3032 | |
3033 | void | |
dc05df57 | 3034 | _initialize_windows_nat (void) |
24e60978 | 3035 | { |
df7e5265 GB |
3036 | x86_dr_low.set_control = cygwin_set_dr7; |
3037 | x86_dr_low.set_addr = cygwin_set_dr; | |
3038 | x86_dr_low.get_addr = cygwin_get_dr; | |
3039 | x86_dr_low.get_status = cygwin_get_dr6; | |
3040 | x86_dr_low.get_control = cygwin_get_dr7; | |
51a9c8c5 | 3041 | |
df7e5265 GB |
3042 | /* x86_dr_low.debug_register_length field is set by |
3043 | calling x86_set_debug_register_length function | |
51a9c8c5 | 3044 | in processor windows specific native file. */ |
fa58ee11 | 3045 | |
d9f719f1 | 3046 | add_inf_child_target (&the_windows_nat_target); |
1ef980b9 | 3047 | |
d0d0ab16 CV |
3048 | #ifdef __CYGWIN__ |
3049 | cygwin_internal (CW_SET_DOS_FILE_WARNING, 0); | |
3050 | #endif | |
3051 | ||
463888ab РИ |
3052 | add_com ("signal-event", class_run, signal_event_command, _("\ |
3053 | Signal a crashed process with event ID, to allow its debugging.\n\ | |
3054 | This command is needed in support of setting up GDB as JIT debugger on \ | |
3055 | MS-Windows. The command should be invoked from the GDB command line using \ | |
3056 | the '-ex' command-line option. The ID of the event that blocks the \ | |
3057 | crashed process will be supplied by the Windows JIT debugging mechanism.")); | |
3058 | ||
10325bc5 | 3059 | #ifdef __CYGWIN__ |
5bf193a2 AC |
3060 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
3061 | Set use of shell to start subprocess."), _("\ | |
3062 | Show use of shell to start subprocess."), NULL, | |
3063 | NULL, | |
3064 | NULL, /* FIXME: i18n: */ | |
3065 | &setlist, &showlist); | |
3066 | ||
581e13c1 MS |
3067 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, |
3068 | &cygwin_exceptions, _("\ | |
09280ddf CF |
3069 | Break when an exception is detected in the Cygwin DLL itself."), _("\ |
3070 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
3071 | NULL, | |
3072 | NULL, /* FIXME: i18n: */ | |
3073 | &setlist, &showlist); | |
10325bc5 | 3074 | #endif |
09280ddf | 3075 | |
5bf193a2 AC |
3076 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
3077 | Set creation of new console when creating child process."), _("\ | |
3078 | Show creation of new console when creating child process."), NULL, | |
3079 | NULL, | |
3080 | NULL, /* FIXME: i18n: */ | |
3081 | &setlist, &showlist); | |
3082 | ||
3083 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
3084 | Set creation of new group when creating child process."), _("\ | |
3085 | Show creation of new group when creating child process."), NULL, | |
3086 | NULL, | |
3087 | NULL, /* FIXME: i18n: */ | |
3088 | &setlist, &showlist); | |
3089 | ||
3090 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
3091 | Set whether to display execution in child process."), _("\ | |
3092 | Show whether to display execution in child process."), NULL, | |
3093 | NULL, | |
3094 | NULL, /* FIXME: i18n: */ | |
3095 | &setlist, &showlist); | |
3096 | ||
3097 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
3098 | Set whether to display kernel events in child process."), _("\ | |
3099 | Show whether to display kernel events in child process."), NULL, | |
3100 | NULL, | |
3101 | NULL, /* FIXME: i18n: */ | |
3102 | &setlist, &showlist); | |
3103 | ||
3104 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
3105 | Set whether to display memory accesses in child process."), _("\ | |
3106 | Show whether to display memory accesses in child process."), NULL, | |
3107 | NULL, | |
3108 | NULL, /* FIXME: i18n: */ | |
3109 | &setlist, &showlist); | |
3110 | ||
3111 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
3112 | &debug_exceptions, _("\ | |
3113 | Set whether to display kernel exceptions in child process."), _("\ | |
3114 | Show whether to display kernel exceptions in child process."), NULL, | |
3115 | NULL, | |
3116 | NULL, /* FIXME: i18n: */ | |
3117 | &setlist, &showlist); | |
1ef980b9 | 3118 | |
711e434b | 3119 | init_w32_command_list (); |
c1748f97 PM |
3120 | |
3121 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 3122 | _("Display selectors infos."), |
c1748f97 | 3123 | &info_w32_cmdlist); |
24e60978 | 3124 | } |
3cee93ac | 3125 | |
fa4ba8da PM |
3126 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
3127 | ||
3128 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
3129 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 3130 | actually set up when windows_continue is called. */ |
9bb9e8ad | 3131 | static void |
fa4ba8da PM |
3132 | cygwin_set_dr (int i, CORE_ADDR addr) |
3133 | { | |
3134 | if (i < 0 || i > 3) | |
3135 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3136 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
41b4aadc | 3137 | dr[i] = addr; |
fa4ba8da PM |
3138 | debug_registers_changed = 1; |
3139 | debug_registers_used = 1; | |
3140 | } | |
3141 | ||
3142 | /* Pass the value VAL to the inferior in the DR7 debug control | |
3143 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 3144 | will be actually set up in windows_wait. */ |
9bb9e8ad PM |
3145 | static void |
3146 | cygwin_set_dr7 (unsigned long val) | |
fa4ba8da | 3147 | { |
9bb9e8ad | 3148 | dr[7] = (CORE_ADDR) val; |
fa4ba8da PM |
3149 | debug_registers_changed = 1; |
3150 | debug_registers_used = 1; | |
3151 | } | |
3152 | ||
7b50312a PA |
3153 | /* Get the value of debug register I from the inferior. */ |
3154 | ||
3155 | static CORE_ADDR | |
3156 | cygwin_get_dr (int i) | |
3157 | { | |
3158 | return dr[i]; | |
3159 | } | |
3160 | ||
fa4ba8da PM |
3161 | /* Get the value of the DR6 debug status register from the inferior. |
3162 | Here we just return the value stored in dr[6] | |
3163 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
9bb9e8ad | 3164 | static unsigned long |
fa4ba8da PM |
3165 | cygwin_get_dr6 (void) |
3166 | { | |
9bb9e8ad | 3167 | return (unsigned long) dr[6]; |
fa4ba8da PM |
3168 | } |
3169 | ||
7b50312a PA |
3170 | /* Get the value of the DR7 debug status register from the inferior. |
3171 | Here we just return the value stored in dr[7] by the last call to | |
3172 | thread_rec for current_event.dwThreadId id. */ | |
3173 | ||
3174 | static unsigned long | |
3175 | cygwin_get_dr7 (void) | |
3176 | { | |
3177 | return (unsigned long) dr[7]; | |
3178 | } | |
3179 | ||
2dc38344 | 3180 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 3181 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
581e13c1 | 3182 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
f6ac5f3d | 3183 | |
57810aa7 | 3184 | bool |
f6ac5f3d | 3185 | windows_nat_target::thread_alive (ptid_t ptid) |
3cee93ac | 3186 | { |
2dc38344 PA |
3187 | int tid; |
3188 | ||
cc6bcb54 TT |
3189 | gdb_assert (ptid.tid () != 0); |
3190 | tid = ptid.tid (); | |
39f77062 | 3191 | |
57810aa7 | 3192 | return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) != WAIT_OBJECT_0; |
3cee93ac CF |
3193 | } |
3194 | ||
2a3d5645 CF |
3195 | void |
3196 | _initialize_check_for_gdb_ini (void) | |
3197 | { | |
3198 | char *homedir; | |
3199 | if (inhibit_gdbinit) | |
3200 | return; | |
3201 | ||
3202 | homedir = getenv ("HOME"); | |
3203 | if (homedir) | |
3204 | { | |
3205 | char *p; | |
3206 | char *oldini = (char *) alloca (strlen (homedir) + | |
1270fac6 | 3207 | sizeof ("gdb.ini") + 1); |
2a3d5645 CF |
3208 | strcpy (oldini, homedir); |
3209 | p = strchr (oldini, '\0'); | |
0ba1096a | 3210 | if (p > oldini && !IS_DIR_SEPARATOR (p[-1])) |
2a3d5645 CF |
3211 | *p++ = '/'; |
3212 | strcpy (p, "gdb.ini"); | |
3213 | if (access (oldini, 0) == 0) | |
3214 | { | |
3215 | int len = strlen (oldini); | |
1270fac6 | 3216 | char *newini = (char *) alloca (len + 2); |
08850b56 | 3217 | |
1270fac6 | 3218 | xsnprintf (newini, len + 2, "%.*s.gdbinit", |
08850b56 | 3219 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 3220 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
3221 | } |
3222 | } | |
3223 | } | |
33605d39 | 3224 | |
2b008701 | 3225 | /* Define dummy functions which always return error for the rare cases where |
581e13c1 | 3226 | these functions could not be found. */ |
2b008701 CF |
3227 | static BOOL WINAPI |
3228 | bad_DebugActiveProcessStop (DWORD w) | |
3229 | { | |
3230 | return FALSE; | |
3231 | } | |
3232 | static BOOL WINAPI | |
3233 | bad_DebugBreakProcess (HANDLE w) | |
3234 | { | |
3235 | return FALSE; | |
3236 | } | |
3237 | static BOOL WINAPI | |
3238 | bad_DebugSetProcessKillOnExit (BOOL w) | |
3239 | { | |
3240 | return FALSE; | |
3241 | } | |
3242 | static BOOL WINAPI | |
3243 | bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z) | |
3244 | { | |
3245 | return FALSE; | |
3246 | } | |
b3c613f2 CF |
3247 | |
3248 | #ifdef __USEWIDE | |
2b008701 | 3249 | static DWORD WINAPI |
b3c613f2 | 3250 | bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z) |
2b008701 CF |
3251 | { |
3252 | return 0; | |
3253 | } | |
d0d0ab16 CV |
3254 | #else |
3255 | static DWORD WINAPI | |
b3c613f2 | 3256 | bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z) |
d0d0ab16 CV |
3257 | { |
3258 | return 0; | |
3259 | } | |
3260 | #endif | |
b3c613f2 | 3261 | |
2b008701 CF |
3262 | static BOOL WINAPI |
3263 | bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z) | |
3264 | { | |
3265 | return FALSE; | |
3266 | } | |
3267 | ||
418c6cb3 CF |
3268 | static BOOL WINAPI |
3269 | bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y) | |
3270 | { | |
3271 | return FALSE; | |
3272 | } | |
3273 | ||
cd44747c PM |
3274 | static BOOL WINAPI |
3275 | bad_GetCurrentConsoleFont (HANDLE w, BOOL bMaxWindow, CONSOLE_FONT_INFO *f) | |
3276 | { | |
3277 | f->nFont = 0; | |
3278 | return 1; | |
3279 | } | |
3280 | static COORD WINAPI | |
3281 | bad_GetConsoleFontSize (HANDLE w, DWORD nFont) | |
3282 | { | |
3283 | COORD size; | |
3284 | size.X = 8; | |
3285 | size.Y = 12; | |
3286 | return size; | |
3287 | } | |
3288 | ||
2b008701 | 3289 | /* Load any functions which may not be available in ancient versions |
581e13c1 | 3290 | of Windows. */ |
d603d4b3 | 3291 | |
33605d39 | 3292 | void |
2b008701 | 3293 | _initialize_loadable (void) |
33605d39 | 3294 | { |
2b008701 CF |
3295 | HMODULE hm = NULL; |
3296 | ||
43499ea3 PA |
3297 | #define GPA(m, func) \ |
3298 | func = (func ## _ftype *) GetProcAddress (m, #func) | |
3299 | ||
2b008701 CF |
3300 | hm = LoadLibrary ("kernel32.dll"); |
3301 | if (hm) | |
33605d39 | 3302 | { |
43499ea3 PA |
3303 | GPA (hm, DebugActiveProcessStop); |
3304 | GPA (hm, DebugBreakProcess); | |
3305 | GPA (hm, DebugSetProcessKillOnExit); | |
3306 | GPA (hm, GetConsoleFontSize); | |
3307 | GPA (hm, DebugActiveProcessStop); | |
3308 | GPA (hm, GetCurrentConsoleFont); | |
2b008701 | 3309 | } |
33605d39 | 3310 | |
2b008701 | 3311 | /* Set variables to dummy versions of these processes if the function |
581e13c1 | 3312 | wasn't found in kernel32.dll. */ |
b3c613f2 CF |
3313 | if (!DebugBreakProcess) |
3314 | DebugBreakProcess = bad_DebugBreakProcess; | |
3315 | if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit) | |
2b008701 | 3316 | { |
b3c613f2 CF |
3317 | DebugActiveProcessStop = bad_DebugActiveProcessStop; |
3318 | DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit; | |
2b008701 | 3319 | } |
cd44747c PM |
3320 | if (!GetConsoleFontSize) |
3321 | GetConsoleFontSize = bad_GetConsoleFontSize; | |
3322 | if (!GetCurrentConsoleFont) | |
3323 | GetCurrentConsoleFont = bad_GetCurrentConsoleFont; | |
33605d39 | 3324 | |
2b008701 | 3325 | /* Load optional functions used for retrieving filename information |
581e13c1 | 3326 | associated with the currently debugged process or its dlls. */ |
2b008701 CF |
3327 | hm = LoadLibrary ("psapi.dll"); |
3328 | if (hm) | |
3329 | { | |
43499ea3 PA |
3330 | GPA (hm, EnumProcessModules); |
3331 | GPA (hm, GetModuleInformation); | |
aec47d1d JB |
3332 | GetModuleFileNameEx = (GetModuleFileNameEx_ftype *) |
3333 | GetProcAddress (hm, GetModuleFileNameEx_name); | |
33605d39 CF |
3334 | } |
3335 | ||
b3c613f2 | 3336 | if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx) |
2b008701 CF |
3337 | { |
3338 | /* Set variables to dummy versions of these processes if the function | |
581e13c1 | 3339 | wasn't found in psapi.dll. */ |
b3c613f2 CF |
3340 | EnumProcessModules = bad_EnumProcessModules; |
3341 | GetModuleInformation = bad_GetModuleInformation; | |
3342 | GetModuleFileNameEx = bad_GetModuleFileNameEx; | |
581e13c1 MS |
3343 | /* This will probably fail on Windows 9x/Me. Let the user know |
3344 | that we're missing some functionality. */ | |
3345 | warning(_("\ | |
3346 | cannot automatically find executable file or library to read symbols.\n\ | |
3347 | Use \"file\" or \"dll\" command to load executable/libraries directly.")); | |
418c6cb3 CF |
3348 | } |
3349 | ||
3350 | hm = LoadLibrary ("advapi32.dll"); | |
3351 | if (hm) | |
3352 | { | |
43499ea3 PA |
3353 | GPA (hm, OpenProcessToken); |
3354 | GPA (hm, LookupPrivilegeValueA); | |
3355 | GPA (hm, AdjustTokenPrivileges); | |
418c6cb3 | 3356 | /* Only need to set one of these since if OpenProcessToken fails nothing |
581e13c1 MS |
3357 | else is needed. */ |
3358 | if (!OpenProcessToken || !LookupPrivilegeValueA | |
3359 | || !AdjustTokenPrivileges) | |
b3c613f2 | 3360 | OpenProcessToken = bad_OpenProcessToken; |
2b008701 | 3361 | } |
43499ea3 PA |
3362 | |
3363 | #undef GPA | |
33605d39 | 3364 | } |