Commit | Line | Data |
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dc05df57 | 1 | /* Target-vector operations for controlling windows child processes, for GDB. |
0a65a603 | 2 | |
b811d2c2 | 3 | Copyright (C) 1995-2020 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" | |
559e7e50 | 71 | #include "gdbsupport/gdb_wait.h" |
de1b3c3d | 72 | |
418c6cb3 | 73 | #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges |
2b008701 CF |
74 | #define DebugActiveProcessStop dyn_DebugActiveProcessStop |
75 | #define DebugBreakProcess dyn_DebugBreakProcess | |
76 | #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit | |
77 | #define EnumProcessModules dyn_EnumProcessModules | |
2b008701 | 78 | #define GetModuleInformation dyn_GetModuleInformation |
418c6cb3 CF |
79 | #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA |
80 | #define OpenProcessToken dyn_OpenProcessToken | |
cd44747c PM |
81 | #define GetConsoleFontSize dyn_GetConsoleFontSize |
82 | #define GetCurrentConsoleFont dyn_GetCurrentConsoleFont | |
2b008701 | 83 | |
43499ea3 PA |
84 | typedef BOOL WINAPI (AdjustTokenPrivileges_ftype) (HANDLE, BOOL, |
85 | PTOKEN_PRIVILEGES, | |
86 | DWORD, PTOKEN_PRIVILEGES, | |
87 | PDWORD); | |
88 | static AdjustTokenPrivileges_ftype *AdjustTokenPrivileges; | |
89 | ||
90 | typedef BOOL WINAPI (DebugActiveProcessStop_ftype) (DWORD); | |
91 | static DebugActiveProcessStop_ftype *DebugActiveProcessStop; | |
92 | ||
93 | typedef BOOL WINAPI (DebugBreakProcess_ftype) (HANDLE); | |
94 | static DebugBreakProcess_ftype *DebugBreakProcess; | |
95 | ||
96 | typedef BOOL WINAPI (DebugSetProcessKillOnExit_ftype) (BOOL); | |
97 | static DebugSetProcessKillOnExit_ftype *DebugSetProcessKillOnExit; | |
98 | ||
99 | typedef BOOL WINAPI (EnumProcessModules_ftype) (HANDLE, HMODULE *, DWORD, | |
100 | LPDWORD); | |
101 | static EnumProcessModules_ftype *EnumProcessModules; | |
102 | ||
103 | typedef BOOL WINAPI (GetModuleInformation_ftype) (HANDLE, HMODULE, | |
104 | LPMODULEINFO, DWORD); | |
105 | static GetModuleInformation_ftype *GetModuleInformation; | |
106 | ||
107 | typedef BOOL WINAPI (LookupPrivilegeValueA_ftype) (LPCSTR, LPCSTR, PLUID); | |
108 | static LookupPrivilegeValueA_ftype *LookupPrivilegeValueA; | |
109 | ||
110 | typedef BOOL WINAPI (OpenProcessToken_ftype) (HANDLE, DWORD, PHANDLE); | |
111 | static OpenProcessToken_ftype *OpenProcessToken; | |
112 | ||
113 | typedef BOOL WINAPI (GetCurrentConsoleFont_ftype) (HANDLE, BOOL, | |
114 | CONSOLE_FONT_INFO *); | |
115 | static GetCurrentConsoleFont_ftype *GetCurrentConsoleFont; | |
116 | ||
117 | typedef COORD WINAPI (GetConsoleFontSize_ftype) (HANDLE, DWORD); | |
118 | static GetConsoleFontSize_ftype *GetConsoleFontSize; | |
2b008701 | 119 | |
b3c613f2 CF |
120 | #undef STARTUPINFO |
121 | #undef CreateProcess | |
122 | #undef GetModuleFileNameEx | |
123 | ||
124 | #ifndef __CYGWIN__ | |
125 | # define __PMAX (MAX_PATH + 1) | |
43499ea3 PA |
126 | typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, LPSTR, DWORD); |
127 | static GetModuleFileNameEx_ftype *GetModuleFileNameEx; | |
b3c613f2 CF |
128 | # define STARTUPINFO STARTUPINFOA |
129 | # define CreateProcess CreateProcessA | |
130 | # define GetModuleFileNameEx_name "GetModuleFileNameExA" | |
131 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA | |
132 | #else | |
133 | # define __PMAX PATH_MAX | |
581e13c1 | 134 | /* The starting and ending address of the cygwin1.dll text segment. */ |
b3c613f2 CF |
135 | static CORE_ADDR cygwin_load_start; |
136 | static CORE_ADDR cygwin_load_end; | |
b3c613f2 CF |
137 | # define __USEWIDE |
138 | typedef wchar_t cygwin_buf_t; | |
43499ea3 PA |
139 | typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, |
140 | LPWSTR, DWORD); | |
141 | static GetModuleFileNameEx_ftype *GetModuleFileNameEx; | |
b3c613f2 CF |
142 | # define STARTUPINFO STARTUPINFOW |
143 | # define CreateProcess CreateProcessW | |
144 | # define GetModuleFileNameEx_name "GetModuleFileNameExW" | |
145 | # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW | |
10325bc5 | 146 | #endif |
a244bdca | 147 | |
581e13c1 MS |
148 | static int have_saved_context; /* True if we've saved context from a |
149 | cygwin signal. */ | |
15766370 | 150 | #ifdef __CYGWIN__ |
85102364 | 151 | static CONTEXT saved_context; /* Contains the saved context from a |
581e13c1 | 152 | cygwin signal. */ |
15766370 | 153 | #endif |
a244bdca | 154 | |
0714f9bf SS |
155 | /* If we're not using the old Cygwin header file set, define the |
156 | following which never should have been in the generic Win32 API | |
581e13c1 | 157 | headers in the first place since they were our own invention... */ |
0714f9bf | 158 | #ifndef _GNU_H_WINDOWS_H |
9d3789f7 | 159 | enum |
8e860359 CF |
160 | { |
161 | FLAG_TRACE_BIT = 0x100, | |
8e860359 | 162 | }; |
0714f9bf SS |
163 | #endif |
164 | ||
5851ab76 JB |
165 | #ifndef CONTEXT_EXTENDED_REGISTERS |
166 | /* This macro is only defined on ia32. It only makes sense on this target, | |
167 | so define it as zero if not already defined. */ | |
168 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
169 | #endif | |
170 | ||
f0666312 JT |
171 | #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \ |
172 | | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \ | |
173 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 174 | |
41b4aadc | 175 | static uintptr_t dr[8]; |
87a45c96 CF |
176 | static int debug_registers_changed; |
177 | static int debug_registers_used; | |
16d905e2 CF |
178 | |
179 | static int windows_initialization_done; | |
6537bb24 | 180 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 181 | |
24cdb46e РИ |
182 | /* The exception thrown by a program to tell the debugger the name of |
183 | a thread. The exception record contains an ID of a thread and a | |
184 | name to give it. This exception has no documented name, but MSDN | |
185 | dubs it "MS_VC_EXCEPTION" in one code example. */ | |
186 | #define MS_VC_EXCEPTION 0x406d1388 | |
187 | ||
188 | typedef enum | |
189 | { | |
190 | HANDLE_EXCEPTION_UNHANDLED = 0, | |
191 | HANDLE_EXCEPTION_HANDLED, | |
192 | HANDLE_EXCEPTION_IGNORED | |
193 | } handle_exception_result; | |
194 | ||
3cee93ac | 195 | /* The string sent by cygwin when it processes a signal. |
581e13c1 | 196 | FIXME: This should be in a cygwin include file. */ |
3929abe9 CF |
197 | #ifndef _CYGWIN_SIGNAL_STRING |
198 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
199 | #endif | |
3cee93ac | 200 | |
29fe111d | 201 | #define CHECK(x) check (x, __FILE__,__LINE__) |
dfe7f3ac | 202 | #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x |
4e52d31c PM |
203 | #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x |
204 | #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x | |
205 | #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x | |
24e60978 | 206 | |
9bb9e8ad PM |
207 | static void cygwin_set_dr (int i, CORE_ADDR addr); |
208 | static void cygwin_set_dr7 (unsigned long val); | |
a961bc18 | 209 | static CORE_ADDR cygwin_get_dr (int i); |
9bb9e8ad | 210 | static unsigned long cygwin_get_dr6 (void); |
a961bc18 | 211 | static unsigned long cygwin_get_dr7 (void); |
9bb9e8ad | 212 | |
a493e3e2 | 213 | static enum gdb_signal last_sig = GDB_SIGNAL_0; |
581e13c1 | 214 | /* Set if a signal was received from the debugged process. */ |
7393af7c | 215 | |
3cee93ac | 216 | /* Thread information structure used to track information that is |
6537bb24 | 217 | not available in gdb's thread structure. */ |
876d1cd7 | 218 | typedef struct windows_thread_info_struct |
3a4b77d8 | 219 | { |
876d1cd7 | 220 | struct windows_thread_info_struct *next; |
3a4b77d8 JM |
221 | DWORD id; |
222 | HANDLE h; | |
711e434b | 223 | CORE_ADDR thread_local_base; |
3a4b77d8 | 224 | char *name; |
6537bb24 | 225 | int suspended; |
3ade5333 | 226 | int reload_context; |
3a4b77d8 | 227 | CONTEXT context; |
8e860359 | 228 | } |
876d1cd7 | 229 | windows_thread_info; |
1e37c281 | 230 | |
876d1cd7 | 231 | static windows_thread_info thread_head; |
24e60978 | 232 | |
581e13c1 | 233 | /* The process and thread handles for the above context. */ |
24e60978 | 234 | |
3cee93ac CF |
235 | static DEBUG_EVENT current_event; /* The current debug event from |
236 | WaitForDebugEvent */ | |
237 | static HANDLE current_process_handle; /* Currently executing process */ | |
876d1cd7 | 238 | static windows_thread_info *current_thread; /* Info on currently selected thread */ |
7928d571 | 239 | static EXCEPTION_RECORD siginfo_er; /* Contents of $_siginfo */ |
24e60978 | 240 | |
581e13c1 | 241 | /* Counts of things. */ |
24e60978 SC |
242 | static int exception_count = 0; |
243 | static int event_count = 0; | |
dfe7f3ac | 244 | static int saw_create; |
bf25528d | 245 | static int open_process_used = 0; |
24e60978 | 246 | |
581e13c1 | 247 | /* User options. */ |
491144b5 | 248 | static bool new_console = false; |
10325bc5 | 249 | #ifdef __CYGWIN__ |
491144b5 | 250 | static bool cygwin_exceptions = false; |
10325bc5 | 251 | #endif |
491144b5 CB |
252 | static bool new_group = true; |
253 | static bool debug_exec = false; /* show execution */ | |
254 | static bool debug_events = false; /* show events from kernel */ | |
255 | static bool debug_memory = false; /* show target memory accesses */ | |
256 | static bool debug_exceptions = false; /* show target exceptions */ | |
257 | static bool useshell = false; /* use shell for subprocesses */ | |
dfe7f3ac | 258 | |
7e63b4e4 | 259 | /* This vector maps GDB's idea of a register's number into an offset |
dc05df57 | 260 | in the windows exception context vector. |
24e60978 | 261 | |
3cee93ac | 262 | It also contains the bit mask needed to load the register in question. |
24e60978 | 263 | |
7e63b4e4 JB |
264 | The contents of this table can only be computed by the units |
265 | that provide CPU-specific support for Windows native debugging. | |
266 | These units should set the table by calling | |
dc05df57 | 267 | windows_set_context_register_offsets. |
7e63b4e4 | 268 | |
24e60978 SC |
269 | One day we could read a reg, we could inspect the context we |
270 | already have loaded, if it doesn't have the bit set that we need, | |
271 | we read that set of registers in using GetThreadContext. If the | |
581e13c1 | 272 | context already contains what we need, we just unpack it. Then to |
24e60978 SC |
273 | write a register, first we have to ensure that the context contains |
274 | the other regs of the group, and then we copy the info in and set | |
581e13c1 | 275 | out bit. */ |
24e60978 | 276 | |
7e63b4e4 | 277 | static const int *mappings; |
d3a09475 | 278 | |
d40dc7a8 JB |
279 | /* The function to use in order to determine whether a register is |
280 | a segment register or not. */ | |
281 | static segment_register_p_ftype *segment_register_p; | |
282 | ||
73c13fe6 TT |
283 | /* See windows_nat_target::resume to understand why this is commented |
284 | out. */ | |
285 | #if 0 | |
24e60978 | 286 | /* This vector maps the target's idea of an exception (extracted |
581e13c1 | 287 | from the DEBUG_EVENT structure) to GDB's idea. */ |
24e60978 SC |
288 | |
289 | struct xlate_exception | |
290 | { | |
73c13fe6 | 291 | DWORD them; |
2ea28649 | 292 | enum gdb_signal us; |
24e60978 SC |
293 | }; |
294 | ||
73c13fe6 | 295 | static const struct xlate_exception xlate[] = |
24e60978 | 296 | { |
a493e3e2 PA |
297 | {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV}, |
298 | {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV}, | |
299 | {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP}, | |
300 | {DBG_CONTROL_C, GDB_SIGNAL_INT}, | |
301 | {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP}, | |
73c13fe6 TT |
302 | {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE} |
303 | }; | |
24e60978 | 304 | |
73c13fe6 | 305 | #endif /* 0 */ |
f6ac5f3d PA |
306 | |
307 | struct windows_nat_target final : public x86_nat_target<inf_child_target> | |
308 | { | |
309 | void close () override; | |
310 | ||
311 | void attach (const char *, int) override; | |
312 | ||
313 | bool attach_no_wait () override | |
314 | { return true; } | |
315 | ||
316 | void detach (inferior *, int) override; | |
317 | ||
318 | void resume (ptid_t, int , enum gdb_signal) override; | |
319 | ||
320 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
321 | ||
322 | void fetch_registers (struct regcache *, int) override; | |
323 | void store_registers (struct regcache *, int) override; | |
324 | ||
325 | enum target_xfer_status xfer_partial (enum target_object object, | |
326 | const char *annex, | |
327 | gdb_byte *readbuf, | |
328 | const gdb_byte *writebuf, | |
329 | ULONGEST offset, ULONGEST len, | |
330 | ULONGEST *xfered_len) override; | |
331 | ||
332 | void files_info () override; | |
333 | ||
334 | void kill () override; | |
335 | ||
336 | void create_inferior (const char *, const std::string &, | |
337 | char **, int) override; | |
338 | ||
339 | void mourn_inferior () override; | |
340 | ||
57810aa7 | 341 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d | 342 | |
a068643d | 343 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
344 | |
345 | void interrupt () override; | |
346 | ||
347 | char *pid_to_exec_file (int pid) override; | |
348 | ||
349 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
350 | ||
57810aa7 | 351 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
352 | |
353 | const char *thread_name (struct thread_info *) override; | |
5b6d1e4f PA |
354 | |
355 | int get_windows_debug_event (int pid, struct target_waitstatus *ourstatus); | |
f6ac5f3d PA |
356 | }; |
357 | ||
358 | static windows_nat_target the_windows_nat_target; | |
359 | ||
7e63b4e4 JB |
360 | /* Set the MAPPINGS static global to OFFSETS. |
361 | See the description of MAPPINGS for more details. */ | |
362 | ||
363 | void | |
dc05df57 | 364 | windows_set_context_register_offsets (const int *offsets) |
7e63b4e4 JB |
365 | { |
366 | mappings = offsets; | |
367 | } | |
368 | ||
d40dc7a8 JB |
369 | /* See windows-nat.h. */ |
370 | ||
371 | void | |
372 | windows_set_segment_register_p (segment_register_p_ftype *fun) | |
373 | { | |
374 | segment_register_p = fun; | |
375 | } | |
376 | ||
fa4ba8da PM |
377 | static void |
378 | check (BOOL ok, const char *file, int line) | |
379 | { | |
380 | if (!ok) | |
d50a0ce2 CV |
381 | printf_filtered ("error return %s:%d was %u\n", file, line, |
382 | (unsigned) GetLastError ()); | |
fa4ba8da PM |
383 | } |
384 | ||
6537bb24 PA |
385 | /* Find a thread record given a thread id. If GET_CONTEXT is not 0, |
386 | then also retrieve the context for this thread. If GET_CONTEXT is | |
387 | negative, then don't suspend the thread. */ | |
876d1cd7 | 388 | static windows_thread_info * |
3cee93ac | 389 | thread_rec (DWORD id, int get_context) |
24e60978 | 390 | { |
876d1cd7 | 391 | windows_thread_info *th; |
3cee93ac | 392 | |
3a4b77d8 | 393 | for (th = &thread_head; (th = th->next) != NULL;) |
3cee93ac CF |
394 | if (th->id == id) |
395 | { | |
6537bb24 | 396 | if (!th->suspended && get_context) |
3cee93ac | 397 | { |
8a892701 | 398 | if (get_context > 0 && id != current_event.dwThreadId) |
6537bb24 PA |
399 | { |
400 | if (SuspendThread (th->h) == (DWORD) -1) | |
401 | { | |
402 | DWORD err = GetLastError (); | |
22128028 | 403 | |
17617f2d EZ |
404 | /* We get Access Denied (5) when trying to suspend |
405 | threads that Windows started on behalf of the | |
406 | debuggee, usually when those threads are just | |
5d9c55d3 JT |
407 | about to exit. |
408 | We can get Invalid Handle (6) if the main thread | |
409 | has exited. */ | |
410 | if (err != ERROR_INVALID_HANDLE | |
411 | && err != ERROR_ACCESS_DENIED) | |
17617f2d EZ |
412 | warning (_("SuspendThread (tid=0x%x) failed." |
413 | " (winerr %u)"), | |
414 | (unsigned) id, (unsigned) err); | |
415 | th->suspended = -1; | |
6537bb24 | 416 | } |
17617f2d EZ |
417 | else |
418 | th->suspended = 1; | |
6537bb24 | 419 | } |
3cee93ac | 420 | else if (get_context < 0) |
6537bb24 | 421 | th->suspended = -1; |
3ade5333 | 422 | th->reload_context = 1; |
3cee93ac CF |
423 | } |
424 | return th; | |
425 | } | |
426 | ||
427 | return NULL; | |
428 | } | |
429 | ||
c559d709 JB |
430 | /* Add a thread to the thread list. |
431 | ||
432 | PTID is the ptid of the thread to be added. | |
433 | H is its Windows handle. | |
434 | TLB is its thread local base. | |
435 | MAIN_THREAD_P should be true if the thread to be added is | |
436 | the main thread, false otherwise. */ | |
437 | ||
876d1cd7 | 438 | static windows_thread_info * |
c559d709 | 439 | windows_add_thread (ptid_t ptid, HANDLE h, void *tlb, bool main_thread_p) |
3cee93ac | 440 | { |
876d1cd7 | 441 | windows_thread_info *th; |
2dc38344 PA |
442 | DWORD id; |
443 | ||
cc6bcb54 | 444 | gdb_assert (ptid.tid () != 0); |
2dc38344 | 445 | |
cc6bcb54 | 446 | id = ptid.tid (); |
3cee93ac CF |
447 | |
448 | if ((th = thread_rec (id, FALSE))) | |
449 | return th; | |
450 | ||
876d1cd7 | 451 | th = XCNEW (windows_thread_info); |
3cee93ac CF |
452 | th->id = id; |
453 | th->h = h; | |
711e434b | 454 | th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb; |
3cee93ac CF |
455 | th->next = thread_head.next; |
456 | thread_head.next = th; | |
c559d709 JB |
457 | |
458 | /* Add this new thread to the list of threads. | |
459 | ||
460 | To be consistent with what's done on other platforms, we add | |
461 | the main thread silently (in reality, this thread is really | |
462 | more of a process to the user than a thread). */ | |
463 | if (main_thread_p) | |
5b6d1e4f | 464 | add_thread_silent (&the_windows_nat_target, ptid); |
c559d709 | 465 | else |
5b6d1e4f | 466 | add_thread (&the_windows_nat_target, ptid); |
c559d709 | 467 | |
2dc38344 | 468 | /* Set the debug registers for the new thread if they are used. */ |
fa4ba8da PM |
469 | if (debug_registers_used) |
470 | { | |
471 | /* Only change the value of the debug registers. */ | |
472 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
473 | CHECK (GetThreadContext (th->h, &th->context)); | |
474 | th->context.Dr0 = dr[0]; | |
475 | th->context.Dr1 = dr[1]; | |
476 | th->context.Dr2 = dr[2]; | |
477 | th->context.Dr3 = dr[3]; | |
6537bb24 | 478 | th->context.Dr6 = DR6_CLEAR_VALUE; |
fa4ba8da PM |
479 | th->context.Dr7 = dr[7]; |
480 | CHECK (SetThreadContext (th->h, &th->context)); | |
481 | th->context.ContextFlags = 0; | |
482 | } | |
3cee93ac | 483 | return th; |
24e60978 SC |
484 | } |
485 | ||
26c4b26f | 486 | /* Clear out any old thread list and reinitialize it to a |
581e13c1 | 487 | pristine state. */ |
24e60978 | 488 | static void |
dc05df57 | 489 | windows_init_thread_list (void) |
24e60978 | 490 | { |
876d1cd7 | 491 | windows_thread_info *th = &thread_head; |
3cee93ac | 492 | |
dc05df57 | 493 | DEBUG_EVENTS (("gdb: windows_init_thread_list\n")); |
3cee93ac CF |
494 | init_thread_list (); |
495 | while (th->next != NULL) | |
24e60978 | 496 | { |
876d1cd7 | 497 | windows_thread_info *here = th->next; |
3cee93ac | 498 | th->next = here->next; |
b8c9b27d | 499 | xfree (here); |
24e60978 | 500 | } |
059198c1 | 501 | thread_head.next = NULL; |
3cee93ac CF |
502 | } |
503 | ||
c559d709 JB |
504 | /* Delete a thread from the list of threads. |
505 | ||
506 | PTID is the ptid of the thread to be deleted. | |
507 | EXIT_CODE is the thread's exit code. | |
508 | MAIN_THREAD_P should be true if the thread to be deleted is | |
509 | the main thread, false otherwise. */ | |
510 | ||
3cee93ac | 511 | static void |
c559d709 | 512 | windows_delete_thread (ptid_t ptid, DWORD exit_code, bool main_thread_p) |
3cee93ac | 513 | { |
876d1cd7 | 514 | windows_thread_info *th; |
2dc38344 PA |
515 | DWORD id; |
516 | ||
cc6bcb54 | 517 | gdb_assert (ptid.tid () != 0); |
2dc38344 | 518 | |
cc6bcb54 | 519 | id = ptid.tid (); |
3cee93ac | 520 | |
c559d709 JB |
521 | /* Emit a notification about the thread being deleted. |
522 | ||
523 | Note that no notification was printed when the main thread | |
524 | was created, and thus, unless in verbose mode, we should be | |
85102364 | 525 | symmetrical, and avoid that notification for the main thread |
c559d709 JB |
526 | here as well. */ |
527 | ||
3cee93ac | 528 | if (info_verbose) |
a068643d | 529 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ()); |
c559d709 | 530 | else if (print_thread_events && !main_thread_p) |
e0ea48a0 | 531 | printf_unfiltered (_("[%s exited with code %u]\n"), |
a068643d TT |
532 | target_pid_to_str (ptid).c_str (), |
533 | (unsigned) exit_code); | |
c559d709 | 534 | |
5b6d1e4f | 535 | delete_thread (find_thread_ptid (&the_windows_nat_target, ptid)); |
3cee93ac CF |
536 | |
537 | for (th = &thread_head; | |
538 | th->next != NULL && th->next->id != id; | |
539 | th = th->next) | |
540 | continue; | |
541 | ||
542 | if (th->next != NULL) | |
24e60978 | 543 | { |
876d1cd7 | 544 | windows_thread_info *here = th->next; |
3cee93ac | 545 | th->next = here->next; |
24cdb46e | 546 | xfree (here->name); |
b8c9b27d | 547 | xfree (here); |
24e60978 SC |
548 | } |
549 | } | |
550 | ||
9a325b7b JB |
551 | /* Fetches register number R from the given windows_thread_info, |
552 | and supplies its value to the given regcache. | |
553 | ||
554 | This function assumes that R is non-negative. A failed assertion | |
555 | is raised if that is not true. | |
556 | ||
557 | This function assumes that TH->RELOAD_CONTEXT is not set, meaning | |
558 | that the windows_thread_info has an up-to-date context. A failed | |
559 | assertion is raised if that assumption is violated. */ | |
560 | ||
3cee93ac | 561 | static void |
9a325b7b JB |
562 | windows_fetch_one_register (struct regcache *regcache, |
563 | windows_thread_info *th, int r) | |
24e60978 | 564 | { |
9a325b7b JB |
565 | gdb_assert (r >= 0); |
566 | gdb_assert (!th->reload_context); | |
567 | ||
3de88e9a | 568 | char *context_offset = ((char *) &th->context) + mappings[r]; |
ac7936df | 569 | struct gdbarch *gdbarch = regcache->arch (); |
20a6ec49 | 570 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
9a325b7b JB |
571 | |
572 | if (r == I387_FISEG_REGNUM (tdep)) | |
573 | { | |
574 | long l = *((long *) context_offset) & 0xffff; | |
575 | regcache->raw_supply (r, (char *) &l); | |
576 | } | |
577 | else if (r == I387_FOP_REGNUM (tdep)) | |
578 | { | |
579 | long l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); | |
580 | regcache->raw_supply (r, (char *) &l); | |
581 | } | |
582 | else if (segment_register_p (r)) | |
583 | { | |
584 | /* GDB treats segment registers as 32bit registers, but they are | |
585 | in fact only 16 bits long. Make sure we do not read extra | |
586 | bits from our source buffer. */ | |
587 | long l = *((long *) context_offset) & 0xffff; | |
588 | regcache->raw_supply (r, (char *) &l); | |
589 | } | |
590 | else | |
591 | regcache->raw_supply (r, context_offset); | |
592 | } | |
593 | ||
594 | void | |
595 | windows_nat_target::fetch_registers (struct regcache *regcache, int r) | |
596 | { | |
96b49c5e TT |
597 | DWORD tid = regcache->ptid ().tid (); |
598 | windows_thread_info *th = thread_rec (tid, TRUE); | |
9a325b7b JB |
599 | |
600 | /* Check if TH exists. Windows sometimes uses a non-existent | |
601 | thread id in its events. */ | |
602 | if (th == NULL) | |
603 | return; | |
6c7de422 | 604 | |
3de88e9a | 605 | if (th->reload_context) |
3ade5333 | 606 | { |
f20c58f5 | 607 | #ifdef __CYGWIN__ |
a244bdca CF |
608 | if (have_saved_context) |
609 | { | |
581e13c1 MS |
610 | /* Lie about where the program actually is stopped since |
611 | cygwin has informed us that we should consider the signal | |
612 | to have occurred at another location which is stored in | |
613 | "saved_context. */ | |
3de88e9a | 614 | memcpy (&th->context, &saved_context, |
581e13c1 | 615 | __COPY_CONTEXT_SIZE); |
a244bdca CF |
616 | have_saved_context = 0; |
617 | } | |
618 | else | |
cb832706 | 619 | #endif |
a244bdca | 620 | { |
a244bdca | 621 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
17617f2d | 622 | CHECK (GetThreadContext (th->h, &th->context)); |
2b008701 | 623 | /* Copy dr values from that thread. |
581e13c1 MS |
624 | But only if there were not modified since last stop. |
625 | PR gdb/2388 */ | |
88616312 PM |
626 | if (!debug_registers_changed) |
627 | { | |
628 | dr[0] = th->context.Dr0; | |
629 | dr[1] = th->context.Dr1; | |
630 | dr[2] = th->context.Dr2; | |
631 | dr[3] = th->context.Dr3; | |
632 | dr[6] = th->context.Dr6; | |
633 | dr[7] = th->context.Dr7; | |
634 | } | |
a244bdca | 635 | } |
3de88e9a | 636 | th->reload_context = 0; |
3ade5333 CF |
637 | } |
638 | ||
9a325b7b JB |
639 | if (r < 0) |
640 | for (r = 0; r < gdbarch_num_regs (regcache->arch()); r++) | |
641 | windows_fetch_one_register (regcache, th, r); | |
3cee93ac | 642 | else |
9a325b7b | 643 | windows_fetch_one_register (regcache, th, r); |
3cee93ac CF |
644 | } |
645 | ||
9a325b7b JB |
646 | /* Collect the register number R from the given regcache, and store |
647 | its value into the corresponding area of the given thread's context. | |
3de88e9a | 648 | |
9a325b7b JB |
649 | This function assumes that R is non-negative. A failed assertion |
650 | assertion is raised if that is not true. */ | |
3cee93ac CF |
651 | |
652 | static void | |
9a325b7b JB |
653 | windows_store_one_register (const struct regcache *regcache, |
654 | windows_thread_info *th, int r) | |
3cee93ac | 655 | { |
9a325b7b JB |
656 | gdb_assert (r >= 0); |
657 | ||
658 | regcache->raw_collect (r, ((char *) &th->context) + mappings[r]); | |
24e60978 SC |
659 | } |
660 | ||
3de88e9a SM |
661 | /* Store a new register value into the context of the thread tied to |
662 | REGCACHE. */ | |
f6ac5f3d PA |
663 | |
664 | void | |
665 | windows_nat_target::store_registers (struct regcache *regcache, int r) | |
3cee93ac | 666 | { |
96b49c5e TT |
667 | DWORD tid = regcache->ptid ().tid (); |
668 | windows_thread_info *th = thread_rec (tid, TRUE); | |
3de88e9a SM |
669 | |
670 | /* Check if TH exists. Windows sometimes uses a non-existent | |
581e13c1 | 671 | thread id in its events. */ |
9a325b7b JB |
672 | if (th == NULL) |
673 | return; | |
674 | ||
675 | if (r < 0) | |
676 | for (r = 0; r < gdbarch_num_regs (regcache->arch ()); r++) | |
677 | windows_store_one_register (regcache, th, r); | |
678 | else | |
679 | windows_store_one_register (regcache, th, r); | |
3cee93ac | 680 | } |
24e60978 | 681 | |
581e13c1 | 682 | /* Maintain a linked list of "so" information. */ |
d0e449a1 | 683 | struct lm_info_windows : public lm_info_base |
02e423b9 | 684 | { |
f8fdb78e | 685 | LPVOID load_addr = 0; |
c162ed3e | 686 | CORE_ADDR text_offset = 0; |
3ee6f623 CF |
687 | }; |
688 | ||
689 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 690 | |
de1b3c3d | 691 | static struct so_list * |
dc05df57 | 692 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 693 | { |
3ee6f623 | 694 | struct so_list *so; |
d0d0ab16 CV |
695 | char *p; |
696 | #ifndef __CYGWIN__ | |
b3c613f2 CF |
697 | char buf[__PMAX]; |
698 | char cwd[__PMAX]; | |
3f8ad85b CF |
699 | WIN32_FIND_DATA w32_fd; |
700 | HANDLE h = FindFirstFile(name, &w32_fd); | |
3f8ad85b | 701 | |
6badb179 CF |
702 | if (h == INVALID_HANDLE_VALUE) |
703 | strcpy (buf, name); | |
704 | else | |
3f8ad85b | 705 | { |
c914e0cc CF |
706 | FindClose (h); |
707 | strcpy (buf, name); | |
708 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
709 | { | |
710 | p = strrchr (buf, '\\'); | |
711 | if (p) | |
712 | p[1] = '\0'; | |
713 | SetCurrentDirectory (buf); | |
714 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
715 | SetCurrentDirectory (cwd); | |
716 | } | |
3f8ad85b | 717 | } |
3ee6f623 CF |
718 | if (strcasecmp (buf, "ntdll.dll") == 0) |
719 | { | |
720 | GetSystemDirectory (buf, sizeof (buf)); | |
721 | strcat (buf, "\\ntdll.dll"); | |
722 | } | |
d0d0ab16 | 723 | #else |
b3c613f2 | 724 | cygwin_buf_t buf[__PMAX]; |
d0d0ab16 | 725 | |
b3c613f2 | 726 | buf[0] = 0; |
d0d0ab16 CV |
727 | if (access (name, F_OK) != 0) |
728 | { | |
729 | if (strcasecmp (name, "ntdll.dll") == 0) | |
b3c613f2 | 730 | #ifdef __USEWIDE |
d0d0ab16 CV |
731 | { |
732 | GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t)); | |
733 | wcscat (buf, L"\\ntdll.dll"); | |
734 | } | |
b3c613f2 CF |
735 | #else |
736 | { | |
737 | GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t)); | |
738 | strcat (buf, "\\ntdll.dll"); | |
739 | } | |
740 | #endif | |
d0d0ab16 CV |
741 | } |
742 | #endif | |
41bf6aca | 743 | so = XCNEW (struct so_list); |
f8fdb78e | 744 | lm_info_windows *li = new lm_info_windows; |
d0e449a1 SM |
745 | so->lm_info = li; |
746 | li->load_addr = load_addr; | |
de1b3c3d | 747 | strcpy (so->so_original_name, name); |
10325bc5 PA |
748 | #ifndef __CYGWIN__ |
749 | strcpy (so->so_name, buf); | |
750 | #else | |
d0d0ab16 CV |
751 | if (buf[0]) |
752 | cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name, | |
753 | SO_NAME_MAX_PATH_SIZE); | |
754 | else | |
755 | { | |
60c5c021 | 756 | char *rname = realpath (name, NULL); |
d0d0ab16 CV |
757 | if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE) |
758 | { | |
759 | strcpy (so->so_name, rname); | |
760 | free (rname); | |
761 | } | |
762 | else | |
763 | error (_("dll path too long")); | |
764 | } | |
de1b3c3d PA |
765 | /* Record cygwin1.dll .text start/end. */ |
766 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
767 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
768 | { | |
de1b3c3d | 769 | asection *text = NULL; |
8e860359 | 770 | |
192b62ce | 771 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->so_name, "pei-i386", -1)); |
a244bdca | 772 | |
192b62ce | 773 | if (abfd == NULL) |
de1b3c3d PA |
774 | return so; |
775 | ||
192b62ce TT |
776 | if (bfd_check_format (abfd.get (), bfd_object)) |
777 | text = bfd_get_section_by_name (abfd.get (), ".text"); | |
de1b3c3d PA |
778 | |
779 | if (!text) | |
192b62ce | 780 | return so; |
de1b3c3d | 781 | |
7a9dd1b2 | 782 | /* The symbols in a dll are offset by 0x1000, which is the |
de1b3c3d | 783 | offset from 0 of the first byte in an image - because of the |
581e13c1 MS |
784 | file header and the section alignment. */ |
785 | cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) | |
786 | load_addr + 0x1000); | |
fd361982 | 787 | cygwin_load_end = cygwin_load_start + bfd_section_size (text); |
de1b3c3d | 788 | } |
10325bc5 | 789 | #endif |
de1b3c3d PA |
790 | |
791 | return so; | |
8e860359 CF |
792 | } |
793 | ||
3ee6f623 | 794 | static char * |
dfe7f3ac CF |
795 | get_image_name (HANDLE h, void *address, int unicode) |
796 | { | |
d0d0ab16 | 797 | #ifdef __CYGWIN__ |
b3c613f2 | 798 | static char buf[__PMAX]; |
d0d0ab16 | 799 | #else |
b3c613f2 | 800 | static char buf[(2 * __PMAX) + 1]; |
d0d0ab16 | 801 | #endif |
dfe7f3ac CF |
802 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); |
803 | char *address_ptr; | |
804 | int len = 0; | |
805 | char b[2]; | |
5732a500 | 806 | SIZE_T done; |
dfe7f3ac CF |
807 | |
808 | /* Attempt to read the name of the dll that was detected. | |
809 | This is documented to work only when actively debugging | |
581e13c1 | 810 | a program. It will not work for attached processes. */ |
dfe7f3ac CF |
811 | if (address == NULL) |
812 | return NULL; | |
813 | ||
dfe7f3ac | 814 | /* See if we could read the address of a string, and that the |
581e13c1 MS |
815 | address isn't null. */ |
816 | if (!ReadProcessMemory (h, address, &address_ptr, | |
817 | sizeof (address_ptr), &done) | |
6f17862b | 818 | || done != sizeof (address_ptr) || !address_ptr) |
dfe7f3ac CF |
819 | return NULL; |
820 | ||
581e13c1 | 821 | /* Find the length of the string. */ |
6f17862b CF |
822 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
823 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
824 | continue; | |
dfe7f3ac CF |
825 | |
826 | if (!unicode) | |
827 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
828 | else | |
829 | { | |
830 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
831 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
832 | &done); | |
d0d0ab16 | 833 | #ifdef __CYGWIN__ |
b3c613f2 | 834 | wcstombs (buf, unicode_address, __PMAX); |
d0d0ab16 CV |
835 | #else |
836 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf, | |
837 | 0, 0); | |
838 | #endif | |
dfe7f3ac CF |
839 | } |
840 | ||
841 | return buf; | |
842 | } | |
843 | ||
1cd9feab JB |
844 | /* Handle a DLL load event, and return 1. |
845 | ||
846 | This function assumes that this event did not occur during inferior | |
847 | initialization, where their event info may be incomplete (see | |
848 | do_initial_windows_stuff and windows_add_all_dlls for more info | |
849 | on how we handle DLL loading during that phase). */ | |
850 | ||
bf469271 PA |
851 | static void |
852 | handle_load_dll () | |
24e60978 | 853 | { |
3a4b77d8 | 854 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
1cd9feab | 855 | char *dll_name; |
24e60978 | 856 | |
94481b8c JB |
857 | /* Try getting the DLL name via the lpImageName field of the event. |
858 | Note that Microsoft documents this fields as strictly optional, | |
859 | in the sense that it might be NULL. And the first DLL event in | |
860 | particular is explicitly documented as "likely not pass[ed]" | |
861 | (source: MSDN LOAD_DLL_DEBUG_INFO structure). */ | |
1cd9feab JB |
862 | dll_name = get_image_name (current_process_handle, |
863 | event->lpImageName, event->fUnicode); | |
3cee93ac | 864 | if (!dll_name) |
bf469271 | 865 | return; |
3cee93ac | 866 | |
dc05df57 | 867 | solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll); |
de1b3c3d | 868 | solib_end = solib_end->next; |
450005e7 | 869 | |
d0e449a1 SM |
870 | lm_info_windows *li = (lm_info_windows *) solib_end->lm_info; |
871 | ||
a74ce742 | 872 | DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name, |
d0e449a1 | 873 | host_address_to_string (li->load_addr))); |
450005e7 CF |
874 | } |
875 | ||
3ee6f623 | 876 | static void |
dc05df57 | 877 | windows_free_so (struct so_list *so) |
3ee6f623 | 878 | { |
f8fdb78e SM |
879 | lm_info_windows *li = (lm_info_windows *) so->lm_info; |
880 | ||
881 | delete li; | |
de1b3c3d | 882 | xfree (so); |
3cb8e7f6 CF |
883 | } |
884 | ||
3be75f87 JB |
885 | /* Handle a DLL unload event. |
886 | Return 1 if successful, or zero otherwise. | |
887 | ||
888 | This function assumes that this event did not occur during inferior | |
889 | initialization, where their event info may be incomplete (see | |
890 | do_initial_windows_stuff and windows_add_all_dlls for more info | |
891 | on how we handle DLL loading during that phase). */ | |
892 | ||
bf469271 PA |
893 | static void |
894 | handle_unload_dll () | |
d3ff4a77 | 895 | { |
d3653bf6 | 896 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 897 | struct so_list *so; |
d3ff4a77 CF |
898 | |
899 | for (so = &solib_start; so->next != NULL; so = so->next) | |
d0e449a1 SM |
900 | { |
901 | lm_info_windows *li_next = (lm_info_windows *) so->next->lm_info; | |
a25cd31f | 902 | |
d0e449a1 SM |
903 | if (li_next->load_addr == lpBaseOfDll) |
904 | { | |
905 | struct so_list *sodel = so->next; | |
7488902c | 906 | |
d0e449a1 SM |
907 | so->next = sodel->next; |
908 | if (!so->next) | |
909 | solib_end = so; | |
910 | DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name)); | |
911 | ||
912 | windows_free_so (sodel); | |
bf469271 | 913 | return; |
d0e449a1 SM |
914 | } |
915 | } | |
3929abe9 | 916 | |
ecc13e53 JB |
917 | /* We did not find any DLL that was previously loaded at this address, |
918 | so register a complaint. We do not report an error, because we have | |
919 | observed that this may be happening under some circumstances. For | |
920 | instance, running 32bit applications on x64 Windows causes us to receive | |
921 | 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these | |
922 | events are apparently caused by the WOW layer, the interface between | |
923 | 32bit and 64bit worlds). */ | |
b98664d3 | 924 | complaint (_("dll starting at %s not found."), |
ecc13e53 | 925 | host_address_to_string (lpBaseOfDll)); |
bf469271 PA |
926 | } |
927 | ||
928 | /* Call FUNC wrapped in a TRY/CATCH that swallows all GDB | |
929 | exceptions. */ | |
d3ff4a77 | 930 | |
bf469271 PA |
931 | static void |
932 | catch_errors (void (*func) ()) | |
933 | { | |
a70b8144 | 934 | try |
bf469271 PA |
935 | { |
936 | func (); | |
937 | } | |
230d2906 | 938 | catch (const gdb_exception &ex) |
bf469271 PA |
939 | { |
940 | exception_print (gdb_stderr, ex); | |
941 | } | |
d3ff4a77 CF |
942 | } |
943 | ||
581e13c1 | 944 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 945 | static void |
dc05df57 | 946 | windows_clear_solib (void) |
450005e7 | 947 | { |
25057eb0 HD |
948 | struct so_list *so; |
949 | ||
950 | for (so = solib_start.next; so; so = solib_start.next) | |
951 | { | |
952 | solib_start.next = so->next; | |
953 | windows_free_so (so); | |
954 | } | |
955 | ||
450005e7 | 956 | solib_end = &solib_start; |
450005e7 | 957 | } |
295732ea | 958 | |
463888ab | 959 | static void |
0b39b52e | 960 | signal_event_command (const char *args, int from_tty) |
463888ab РИ |
961 | { |
962 | uintptr_t event_id = 0; | |
963 | char *endargs = NULL; | |
964 | ||
965 | if (args == NULL) | |
966 | error (_("signal-event requires an argument (integer event id)")); | |
967 | ||
968 | event_id = strtoumax (args, &endargs, 10); | |
969 | ||
970 | if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) || | |
971 | ((HANDLE) event_id == INVALID_HANDLE_VALUE)) | |
972 | error (_("Failed to convert `%s' to event id"), args); | |
973 | ||
974 | SetEvent ((HANDLE) event_id); | |
975 | CloseHandle ((HANDLE) event_id); | |
976 | } | |
977 | ||
3cee93ac CF |
978 | /* Handle DEBUG_STRING output from child process. |
979 | Cygwin prepends its messages with a "cygwin:". Interpret this as | |
581e13c1 | 980 | a Cygwin signal. Otherwise just print the string as a warning. */ |
3cee93ac CF |
981 | static int |
982 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
983 | { | |
e83e4e24 | 984 | gdb::unique_xmalloc_ptr<char> s; |
a244bdca | 985 | int retval = 0; |
3cee93ac CF |
986 | |
987 | if (!target_read_string | |
2c647436 | 988 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, |
e83e4e24 TT |
989 | &s, 1024, 0) |
990 | || !s || !*(s.get ())) | |
a244bdca | 991 | /* nothing to do */; |
e83e4e24 | 992 | else if (!startswith (s.get (), _CYGWIN_SIGNAL_STRING)) |
3cee93ac | 993 | { |
10325bc5 | 994 | #ifdef __CYGWIN__ |
e83e4e24 | 995 | if (!startswith (s.get (), "cYg")) |
10325bc5 | 996 | #endif |
040ea00b | 997 | { |
e83e4e24 | 998 | char *p = strchr (s.get (), '\0'); |
040ea00b | 999 | |
e83e4e24 | 1000 | if (p > s.get () && *--p == '\n') |
040ea00b | 1001 | *p = '\0'; |
e83e4e24 | 1002 | warning (("%s"), s.get ()); |
040ea00b | 1003 | } |
3cee93ac | 1004 | } |
f20c58f5 | 1005 | #ifdef __CYGWIN__ |
d3a09475 | 1006 | else |
3cee93ac | 1007 | { |
581e13c1 MS |
1008 | /* Got a cygwin signal marker. A cygwin signal is followed by |
1009 | the signal number itself and then optionally followed by the | |
1010 | thread id and address to saved context within the DLL. If | |
1011 | these are supplied, then the given thread is assumed to have | |
1012 | issued the signal and the context from the thread is assumed | |
1013 | to be stored at the given address in the inferior. Tell gdb | |
1014 | to treat this like a real signal. */ | |
3cee93ac | 1015 | char *p; |
e83e4e24 | 1016 | int sig = strtol (s.get () + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
0ae534d2 | 1017 | gdb_signal gotasig = gdb_signal_from_host (sig); |
c62fa0e2 | 1018 | |
0714f9bf SS |
1019 | ourstatus->value.sig = gotasig; |
1020 | if (gotasig) | |
a244bdca CF |
1021 | { |
1022 | LPCVOID x; | |
2c15ef43 | 1023 | SIZE_T n; |
c62fa0e2 | 1024 | |
a244bdca CF |
1025 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
1026 | retval = strtoul (p, &p, 0); | |
1027 | if (!retval) | |
ab4ee614 | 1028 | retval = current_event.dwThreadId; |
40653b35 | 1029 | else if ((x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0)) |
a244bdca | 1030 | && ReadProcessMemory (current_process_handle, x, |
581e13c1 MS |
1031 | &saved_context, |
1032 | __COPY_CONTEXT_SIZE, &n) | |
a244bdca CF |
1033 | && n == __COPY_CONTEXT_SIZE) |
1034 | have_saved_context = 1; | |
a244bdca | 1035 | } |
3cee93ac | 1036 | } |
cb832706 | 1037 | #endif |
3cee93ac | 1038 | |
a244bdca | 1039 | return retval; |
3cee93ac | 1040 | } |
24e60978 | 1041 | |
c1748f97 PM |
1042 | static int |
1043 | display_selector (HANDLE thread, DWORD sel) | |
1044 | { | |
1045 | LDT_ENTRY info; | |
1046 | if (GetThreadSelectorEntry (thread, sel, &info)) | |
1047 | { | |
1048 | int base, limit; | |
d50a0ce2 | 1049 | printf_filtered ("0x%03x: ", (unsigned) sel); |
c1748f97 | 1050 | if (!info.HighWord.Bits.Pres) |
baa93fa6 CF |
1051 | { |
1052 | puts_filtered ("Segment not present\n"); | |
1053 | return 0; | |
1054 | } | |
c1748f97 PM |
1055 | base = (info.HighWord.Bits.BaseHi << 24) + |
1056 | (info.HighWord.Bits.BaseMid << 16) | |
1057 | + info.BaseLow; | |
1058 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
1059 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 1060 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
1061 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
1062 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 1063 | puts_filtered(" 32-bit "); |
c1748f97 | 1064 | else |
baa93fa6 | 1065 | puts_filtered(" 16-bit "); |
c1748f97 PM |
1066 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
1067 | { | |
1068 | case 0: | |
baa93fa6 CF |
1069 | puts_filtered ("Data (Read-Only, Exp-up"); |
1070 | break; | |
c1748f97 | 1071 | case 1: |
baa93fa6 CF |
1072 | puts_filtered ("Data (Read/Write, Exp-up"); |
1073 | break; | |
c1748f97 | 1074 | case 2: |
baa93fa6 CF |
1075 | puts_filtered ("Unused segment ("); |
1076 | break; | |
c1748f97 | 1077 | case 3: |
baa93fa6 CF |
1078 | puts_filtered ("Data (Read/Write, Exp-down"); |
1079 | break; | |
c1748f97 | 1080 | case 4: |
baa93fa6 CF |
1081 | puts_filtered ("Code (Exec-Only, N.Conf"); |
1082 | break; | |
c1748f97 | 1083 | case 5: |
baa93fa6 | 1084 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
1085 | break; |
1086 | case 6: | |
baa93fa6 | 1087 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
1088 | break; |
1089 | case 7: | |
baa93fa6 | 1090 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
1091 | break; |
1092 | default: | |
e432ccf1 JT |
1093 | printf_filtered ("Unknown type 0x%lx", |
1094 | (unsigned long) info.HighWord.Bits.Type); | |
c1748f97 PM |
1095 | } |
1096 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 1097 | puts_filtered(", N.Acc"); |
c1748f97 PM |
1098 | puts_filtered (")\n"); |
1099 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
1100 | puts_filtered("System selector "); | |
e432ccf1 JT |
1101 | printf_filtered ("Priviledge level = %ld. ", |
1102 | (unsigned long) info.HighWord.Bits.Dpl); | |
c1748f97 | 1103 | if (info.HighWord.Bits.Granularity) |
baa93fa6 | 1104 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
1105 | else |
1106 | puts_filtered ("Byte granular.\n"); | |
1107 | return 1; | |
1108 | } | |
1109 | else | |
1110 | { | |
5572ce1f PM |
1111 | DWORD err = GetLastError (); |
1112 | if (err == ERROR_NOT_SUPPORTED) | |
1113 | printf_filtered ("Function not supported\n"); | |
1114 | else | |
d50a0ce2 | 1115 | printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel); |
c1748f97 PM |
1116 | return 0; |
1117 | } | |
1118 | } | |
1119 | ||
1120 | static void | |
5fed81ff | 1121 | display_selectors (const char * args, int from_tty) |
c1748f97 PM |
1122 | { |
1123 | if (!current_thread) | |
1124 | { | |
1125 | puts_filtered ("Impossible to display selectors now.\n"); | |
1126 | return; | |
1127 | } | |
1128 | if (!args) | |
1129 | { | |
1130 | ||
1131 | puts_filtered ("Selector $cs\n"); | |
1132 | display_selector (current_thread->h, | |
baa93fa6 | 1133 | current_thread->context.SegCs); |
c1748f97 PM |
1134 | puts_filtered ("Selector $ds\n"); |
1135 | display_selector (current_thread->h, | |
baa93fa6 | 1136 | current_thread->context.SegDs); |
c1748f97 PM |
1137 | puts_filtered ("Selector $es\n"); |
1138 | display_selector (current_thread->h, | |
baa93fa6 | 1139 | current_thread->context.SegEs); |
c1748f97 PM |
1140 | puts_filtered ("Selector $ss\n"); |
1141 | display_selector (current_thread->h, | |
baa93fa6 | 1142 | current_thread->context.SegSs); |
c1748f97 PM |
1143 | puts_filtered ("Selector $fs\n"); |
1144 | display_selector (current_thread->h, | |
1145 | current_thread->context.SegFs); | |
1146 | puts_filtered ("Selector $gs\n"); | |
1147 | display_selector (current_thread->h, | |
baa93fa6 | 1148 | current_thread->context.SegGs); |
c1748f97 PM |
1149 | } |
1150 | else | |
1151 | { | |
1152 | int sel; | |
1153 | sel = parse_and_eval_long (args); | |
1154 | printf_filtered ("Selector \"%s\"\n",args); | |
1155 | display_selector (current_thread->h, sel); | |
1156 | } | |
1157 | } | |
1158 | ||
7393af7c | 1159 | #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ |
a74ce742 PM |
1160 | printf_unfiltered ("gdb: Target exception %s at %s\n", x, \ |
1161 | host_address_to_string (\ | |
1162 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)) | |
7393af7c | 1163 | |
24cdb46e | 1164 | static handle_exception_result |
450005e7 | 1165 | handle_exception (struct target_waitstatus *ourstatus) |
24e60978 | 1166 | { |
24cdb46e РИ |
1167 | EXCEPTION_RECORD *rec = ¤t_event.u.Exception.ExceptionRecord; |
1168 | DWORD code = rec->ExceptionCode; | |
1169 | handle_exception_result result = HANDLE_EXCEPTION_HANDLED; | |
3cee93ac | 1170 | |
7928d571 HD |
1171 | memcpy (&siginfo_er, rec, sizeof siginfo_er); |
1172 | ||
29fe111d | 1173 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
8a892701 | 1174 | |
581e13c1 | 1175 | /* Record the context of the current thread. */ |
c25b7cce | 1176 | thread_rec (current_event.dwThreadId, -1); |
24e60978 | 1177 | |
29fe111d | 1178 | switch (code) |
24e60978 | 1179 | { |
1ef980b9 | 1180 | case EXCEPTION_ACCESS_VIOLATION: |
7393af7c | 1181 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION"); |
a493e3e2 | 1182 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
10325bc5 | 1183 | #ifdef __CYGWIN__ |
8da8e0b3 | 1184 | { |
581e13c1 MS |
1185 | /* See if the access violation happened within the cygwin DLL |
1186 | itself. Cygwin uses a kind of exception handling to deal | |
1187 | with passed-in invalid addresses. gdb should not treat | |
1188 | these as real SEGVs since they will be silently handled by | |
1189 | cygwin. A real SEGV will (theoretically) be caught by | |
1190 | cygwin later in the process and will be sent as a | |
1191 | cygwin-specific-signal. So, ignore SEGVs if they show up | |
1192 | within the text segment of the DLL itself. */ | |
2c02bd72 | 1193 | const char *fn; |
24cdb46e | 1194 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) rec->ExceptionAddress; |
581e13c1 MS |
1195 | |
1196 | if ((!cygwin_exceptions && (addr >= cygwin_load_start | |
1197 | && addr < cygwin_load_end)) | |
a244bdca | 1198 | || (find_pc_partial_function (addr, &fn, NULL, NULL) |
61012eef | 1199 | && startswith (fn, "KERNEL32!IsBad"))) |
24cdb46e | 1200 | return HANDLE_EXCEPTION_UNHANDLED; |
8da8e0b3 | 1201 | } |
10325bc5 | 1202 | #endif |
7393af7c PM |
1203 | break; |
1204 | case STATUS_STACK_OVERFLOW: | |
1205 | DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW"); | |
a493e3e2 | 1206 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
7393af7c PM |
1207 | break; |
1208 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1209 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND"); | |
a493e3e2 | 1210 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1211 | break; |
1212 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1213 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); | |
a493e3e2 | 1214 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1215 | break; |
1216 | case STATUS_FLOAT_INEXACT_RESULT: | |
1217 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT"); | |
a493e3e2 | 1218 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1219 | break; |
1220 | case STATUS_FLOAT_INVALID_OPERATION: | |
1221 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION"); | |
a493e3e2 | 1222 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1223 | break; |
1224 | case STATUS_FLOAT_OVERFLOW: | |
1225 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW"); | |
a493e3e2 | 1226 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c PM |
1227 | break; |
1228 | case STATUS_FLOAT_STACK_CHECK: | |
1229 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK"); | |
a493e3e2 | 1230 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
1ef980b9 | 1231 | break; |
3b7c8b74 | 1232 | case STATUS_FLOAT_UNDERFLOW: |
7393af7c | 1233 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW"); |
a493e3e2 | 1234 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c | 1235 | break; |
3b7c8b74 | 1236 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
7393af7c | 1237 | DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO"); |
a493e3e2 | 1238 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
7393af7c | 1239 | break; |
3b7c8b74 | 1240 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
7393af7c | 1241 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO"); |
a493e3e2 | 1242 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
3b7c8b74 | 1243 | break; |
7393af7c PM |
1244 | case STATUS_INTEGER_OVERFLOW: |
1245 | DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW"); | |
a493e3e2 | 1246 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
1ef980b9 SC |
1247 | break; |
1248 | case EXCEPTION_BREAKPOINT: | |
7393af7c | 1249 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); |
a493e3e2 | 1250 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
1ef980b9 SC |
1251 | break; |
1252 | case DBG_CONTROL_C: | |
7393af7c | 1253 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C"); |
a493e3e2 | 1254 | ourstatus->value.sig = GDB_SIGNAL_INT; |
5b421780 PM |
1255 | break; |
1256 | case DBG_CONTROL_BREAK: | |
7393af7c | 1257 | DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK"); |
a493e3e2 | 1258 | ourstatus->value.sig = GDB_SIGNAL_INT; |
1ef980b9 SC |
1259 | break; |
1260 | case EXCEPTION_SINGLE_STEP: | |
7393af7c | 1261 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP"); |
a493e3e2 | 1262 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
1ef980b9 | 1263 | break; |
8227c82d | 1264 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
7393af7c | 1265 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION"); |
a493e3e2 | 1266 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
7393af7c PM |
1267 | break; |
1268 | case EXCEPTION_PRIV_INSTRUCTION: | |
1269 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION"); | |
a493e3e2 | 1270 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
7393af7c PM |
1271 | break; |
1272 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1273 | DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION"); | |
a493e3e2 | 1274 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
8227c82d | 1275 | break; |
24cdb46e РИ |
1276 | case MS_VC_EXCEPTION: |
1277 | if (rec->NumberParameters >= 3 | |
1278 | && (rec->ExceptionInformation[0] & 0xffffffff) == 0x1000) | |
1279 | { | |
1280 | DWORD named_thread_id; | |
1281 | windows_thread_info *named_thread; | |
1282 | CORE_ADDR thread_name_target; | |
1283 | ||
1284 | DEBUG_EXCEPTION_SIMPLE ("MS_VC_EXCEPTION"); | |
1285 | ||
1286 | thread_name_target = rec->ExceptionInformation[1]; | |
1287 | named_thread_id = (DWORD) (0xffffffff & rec->ExceptionInformation[2]); | |
1288 | ||
1289 | if (named_thread_id == (DWORD) -1) | |
1290 | named_thread_id = current_event.dwThreadId; | |
1291 | ||
1292 | named_thread = thread_rec (named_thread_id, 0); | |
1293 | if (named_thread != NULL) | |
1294 | { | |
1295 | int thread_name_len; | |
e83e4e24 | 1296 | gdb::unique_xmalloc_ptr<char> thread_name; |
24cdb46e РИ |
1297 | |
1298 | thread_name_len = target_read_string (thread_name_target, | |
1299 | &thread_name, 1025, NULL); | |
1300 | if (thread_name_len > 0) | |
1301 | { | |
e83e4e24 | 1302 | thread_name.get ()[thread_name_len - 1] = '\0'; |
24cdb46e | 1303 | xfree (named_thread->name); |
e83e4e24 | 1304 | named_thread->name = thread_name.release (); |
24cdb46e | 1305 | } |
24cdb46e РИ |
1306 | } |
1307 | ourstatus->value.sig = GDB_SIGNAL_TRAP; | |
1308 | result = HANDLE_EXCEPTION_IGNORED; | |
1309 | break; | |
1310 | } | |
e7ec8713 TT |
1311 | /* treat improperly formed exception as unknown */ |
1312 | /* FALLTHROUGH */ | |
1ef980b9 | 1313 | default: |
581e13c1 | 1314 | /* Treat unhandled first chance exceptions specially. */ |
02e423b9 | 1315 | if (current_event.u.Exception.dwFirstChance) |
24cdb46e | 1316 | return HANDLE_EXCEPTION_UNHANDLED; |
d50a0ce2 CV |
1317 | printf_unfiltered ("gdb: unknown target exception 0x%08x at %s\n", |
1318 | (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
a74ce742 PM |
1319 | host_address_to_string ( |
1320 | current_event.u.Exception.ExceptionRecord.ExceptionAddress)); | |
a493e3e2 | 1321 | ourstatus->value.sig = GDB_SIGNAL_UNKNOWN; |
1ef980b9 | 1322 | break; |
24e60978 | 1323 | } |
24e60978 | 1324 | exception_count++; |
7393af7c | 1325 | last_sig = ourstatus->value.sig; |
24cdb46e | 1326 | return result; |
24e60978 SC |
1327 | } |
1328 | ||
17617f2d EZ |
1329 | /* Resume thread specified by ID, or all artificially suspended |
1330 | threads, if we are continuing execution. KILLED non-zero means we | |
1331 | have killed the inferior, so we should ignore weird errors due to | |
1332 | threads shutting down. */ | |
3cee93ac | 1333 | static BOOL |
17617f2d | 1334 | windows_continue (DWORD continue_status, int id, int killed) |
3cee93ac | 1335 | { |
876d1cd7 | 1336 | windows_thread_info *th; |
3cee93ac CF |
1337 | BOOL res; |
1338 | ||
0c3d84be | 1339 | DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=0x%x, %s);\n", |
d50a0ce2 CV |
1340 | (unsigned) current_event.dwProcessId, |
1341 | (unsigned) current_event.dwThreadId, | |
dfe7f3ac | 1342 | continue_status == DBG_CONTINUE ? |
7393af7c | 1343 | "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED")); |
6537bb24 PA |
1344 | |
1345 | for (th = &thread_head; (th = th->next) != NULL;) | |
1346 | if ((id == -1 || id == (int) th->id) | |
1347 | && th->suspended) | |
1348 | { | |
1349 | if (debug_registers_changed) | |
1350 | { | |
1351 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1352 | th->context.Dr0 = dr[0]; | |
1353 | th->context.Dr1 = dr[1]; | |
1354 | th->context.Dr2 = dr[2]; | |
1355 | th->context.Dr3 = dr[3]; | |
1356 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1357 | th->context.Dr7 = dr[7]; | |
1358 | } | |
1359 | if (th->context.ContextFlags) | |
1360 | { | |
17617f2d EZ |
1361 | DWORD ec = 0; |
1362 | ||
1363 | if (GetExitCodeThread (th->h, &ec) | |
1364 | && ec == STILL_ACTIVE) | |
1365 | { | |
1366 | BOOL status = SetThreadContext (th->h, &th->context); | |
1367 | ||
1368 | if (!killed) | |
1369 | CHECK (status); | |
1370 | } | |
6537bb24 PA |
1371 | th->context.ContextFlags = 0; |
1372 | } | |
1373 | if (th->suspended > 0) | |
1374 | (void) ResumeThread (th->h); | |
1375 | th->suspended = 0; | |
1376 | } | |
1377 | ||
0714f9bf SS |
1378 | res = ContinueDebugEvent (current_event.dwProcessId, |
1379 | current_event.dwThreadId, | |
1380 | continue_status); | |
3cee93ac | 1381 | |
68ffc902 JT |
1382 | if (!res) |
1383 | error (_("Failed to resume program execution" | |
1384 | " (ContinueDebugEvent failed, error %u)"), | |
1385 | (unsigned int) GetLastError ()); | |
1386 | ||
fa4ba8da | 1387 | debug_registers_changed = 0; |
3cee93ac CF |
1388 | return res; |
1389 | } | |
1390 | ||
d6dc8049 CF |
1391 | /* Called in pathological case where Windows fails to send a |
1392 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1393 | static DWORD |
5439edaa | 1394 | fake_create_process (void) |
3ade5333 CF |
1395 | { |
1396 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1397 | current_event.dwProcessId); | |
bf25528d CF |
1398 | if (current_process_handle != NULL) |
1399 | open_process_used = 1; | |
1400 | else | |
1401 | { | |
d50a0ce2 CV |
1402 | error (_("OpenProcess call failed, GetLastError = %u"), |
1403 | (unsigned) GetLastError ()); | |
bf25528d CF |
1404 | /* We can not debug anything in that case. */ |
1405 | } | |
c559d709 JB |
1406 | current_thread |
1407 | = windows_add_thread (ptid_t (current_event.dwProcessId, 0, | |
1408 | current_event.dwThreadId), | |
1409 | current_event.u.CreateThread.hThread, | |
1410 | current_event.u.CreateThread.lpThreadLocalBase, | |
1411 | true /* main_thread_p */); | |
ab4ee614 | 1412 | return current_event.dwThreadId; |
3ade5333 CF |
1413 | } |
1414 | ||
f6ac5f3d PA |
1415 | void |
1416 | windows_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
a244bdca | 1417 | { |
876d1cd7 | 1418 | windows_thread_info *th; |
a244bdca CF |
1419 | DWORD continue_status = DBG_CONTINUE; |
1420 | ||
2dc38344 | 1421 | /* A specific PTID means `step only this thread id'. */ |
d7e15655 | 1422 | int resume_all = ptid == minus_one_ptid; |
2dc38344 PA |
1423 | |
1424 | /* If we're continuing all threads, it's the current inferior that | |
1425 | should be handled specially. */ | |
1426 | if (resume_all) | |
1427 | ptid = inferior_ptid; | |
a244bdca | 1428 | |
a493e3e2 | 1429 | if (sig != GDB_SIGNAL_0) |
a244bdca CF |
1430 | { |
1431 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1432 | { | |
1433 | DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig)); | |
1434 | } | |
1435 | else if (sig == last_sig) | |
1436 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1437 | else | |
1438 | #if 0 | |
1439 | /* This code does not seem to work, because | |
1440 | the kernel does probably not consider changes in the ExceptionRecord | |
1441 | structure when passing the exception to the inferior. | |
1442 | Note that this seems possible in the exception handler itself. */ | |
1443 | { | |
73c13fe6 TT |
1444 | for (const xlate_exception &x : xlate) |
1445 | if (x.us == sig) | |
a244bdca | 1446 | { |
581e13c1 | 1447 | current_event.u.Exception.ExceptionRecord.ExceptionCode |
73c13fe6 | 1448 | = x.them; |
a244bdca CF |
1449 | continue_status = DBG_EXCEPTION_NOT_HANDLED; |
1450 | break; | |
1451 | } | |
1452 | if (continue_status == DBG_CONTINUE) | |
1453 | { | |
1454 | DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig)); | |
1455 | } | |
1456 | } | |
1457 | #endif | |
23942819 | 1458 | DEBUG_EXCEPT(("Can only continue with received signal %d.\n", |
a244bdca CF |
1459 | last_sig)); |
1460 | } | |
1461 | ||
a493e3e2 | 1462 | last_sig = GDB_SIGNAL_0; |
a244bdca | 1463 | |
55dfc88f TT |
1464 | DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=0x%x, step=%d, sig=%d);\n", |
1465 | ptid.pid (), (unsigned) ptid.tid (), step, sig)); | |
a244bdca | 1466 | |
581e13c1 | 1467 | /* Get context for currently selected thread. */ |
cc6bcb54 | 1468 | th = thread_rec (inferior_ptid.tid (), FALSE); |
a244bdca CF |
1469 | if (th) |
1470 | { | |
1471 | if (step) | |
1472 | { | |
581e13c1 | 1473 | /* Single step by setting t bit. */ |
a97b0ac8 | 1474 | struct regcache *regcache = get_current_regcache (); |
ac7936df | 1475 | struct gdbarch *gdbarch = regcache->arch (); |
f6ac5f3d | 1476 | fetch_registers (regcache, gdbarch_ps_regnum (gdbarch)); |
a244bdca CF |
1477 | th->context.EFlags |= FLAG_TRACE_BIT; |
1478 | } | |
1479 | ||
1480 | if (th->context.ContextFlags) | |
1481 | { | |
1482 | if (debug_registers_changed) | |
1483 | { | |
1484 | th->context.Dr0 = dr[0]; | |
1485 | th->context.Dr1 = dr[1]; | |
1486 | th->context.Dr2 = dr[2]; | |
1487 | th->context.Dr3 = dr[3]; | |
6537bb24 | 1488 | th->context.Dr6 = DR6_CLEAR_VALUE; |
a244bdca CF |
1489 | th->context.Dr7 = dr[7]; |
1490 | } | |
1491 | CHECK (SetThreadContext (th->h, &th->context)); | |
1492 | th->context.ContextFlags = 0; | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | /* Allow continuing with the same signal that interrupted us. | |
581e13c1 | 1497 | Otherwise complain. */ |
a244bdca | 1498 | |
2dc38344 | 1499 | if (resume_all) |
17617f2d | 1500 | windows_continue (continue_status, -1, 0); |
2dc38344 | 1501 | else |
cc6bcb54 | 1502 | windows_continue (continue_status, ptid.tid (), 0); |
a244bdca CF |
1503 | } |
1504 | ||
695de547 CF |
1505 | /* Ctrl-C handler used when the inferior is not run in the same console. The |
1506 | handler is in charge of interrupting the inferior using DebugBreakProcess. | |
1507 | Note that this function is not available prior to Windows XP. In this case | |
1508 | we emit a warning. */ | |
d603d4b3 | 1509 | static BOOL WINAPI |
695de547 CF |
1510 | ctrl_c_handler (DWORD event_type) |
1511 | { | |
1512 | const int attach_flag = current_inferior ()->attach_flag; | |
1513 | ||
bb0613a5 PM |
1514 | /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */ |
1515 | if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT) | |
695de547 CF |
1516 | return FALSE; |
1517 | ||
1518 | /* If the inferior and the debugger share the same console, do nothing as | |
1519 | the inferior has also received the Ctrl-C event. */ | |
1520 | if (!new_console && !attach_flag) | |
1521 | return TRUE; | |
1522 | ||
1523 | if (!DebugBreakProcess (current_process_handle)) | |
581e13c1 MS |
1524 | warning (_("Could not interrupt program. " |
1525 | "Press Ctrl-c in the program console.")); | |
695de547 CF |
1526 | |
1527 | /* Return true to tell that Ctrl-C has been handled. */ | |
1528 | return TRUE; | |
1529 | } | |
1530 | ||
e6ad66bd JT |
1531 | /* Get the next event from the child. Returns a non-zero thread id if the event |
1532 | requires handling by WFI (or whatever). */ | |
5b6d1e4f PA |
1533 | |
1534 | int | |
1535 | windows_nat_target::get_windows_debug_event (int pid, | |
1536 | struct target_waitstatus *ourstatus) | |
1e37c281 JM |
1537 | { |
1538 | BOOL debug_event; | |
8a892701 | 1539 | DWORD continue_status, event_code; |
876d1cd7 YZ |
1540 | windows_thread_info *th; |
1541 | static windows_thread_info dummy_thread_info; | |
e6ad66bd | 1542 | DWORD thread_id = 0; |
1e37c281 | 1543 | |
a493e3e2 | 1544 | last_sig = GDB_SIGNAL_0; |
9d3789f7 | 1545 | |
8a892701 | 1546 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) |
29fe111d | 1547 | goto out; |
1e37c281 JM |
1548 | |
1549 | event_count++; | |
1550 | continue_status = DBG_CONTINUE; | |
1e37c281 | 1551 | |
8a892701 | 1552 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1553 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
87a45c96 | 1554 | th = NULL; |
a244bdca | 1555 | have_saved_context = 0; |
8a892701 CF |
1556 | |
1557 | switch (event_code) | |
1e37c281 JM |
1558 | { |
1559 | case CREATE_THREAD_DEBUG_EVENT: | |
0c3d84be | 1560 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1561 | (unsigned) current_event.dwProcessId, |
1562 | (unsigned) current_event.dwThreadId, | |
1563 | "CREATE_THREAD_DEBUG_EVENT")); | |
dfe7f3ac | 1564 | if (saw_create != 1) |
3ade5333 | 1565 | { |
5b6d1e4f | 1566 | inferior *inf = find_inferior_pid (this, current_event.dwProcessId); |
181e7f93 | 1567 | if (!saw_create && inf->attach_flag) |
3ade5333 | 1568 | { |
d6dc8049 CF |
1569 | /* Kludge around a Windows bug where first event is a create |
1570 | thread event. Caused when attached process does not have | |
581e13c1 | 1571 | a main thread. */ |
e6ad66bd JT |
1572 | thread_id = fake_create_process (); |
1573 | if (thread_id) | |
181e7f93 | 1574 | saw_create++; |
3ade5333 CF |
1575 | } |
1576 | break; | |
1577 | } | |
581e13c1 | 1578 | /* Record the existence of this thread. */ |
e6ad66bd | 1579 | thread_id = current_event.dwThreadId; |
c559d709 JB |
1580 | th = windows_add_thread |
1581 | (ptid_t (current_event.dwProcessId, 0, current_event.dwThreadId), | |
1582 | current_event.u.CreateThread.hThread, | |
1583 | current_event.u.CreateThread.lpThreadLocalBase, | |
1584 | false /* main_thread_p */); | |
711e434b | 1585 | |
1e37c281 JM |
1586 | break; |
1587 | ||
1588 | case EXIT_THREAD_DEBUG_EVENT: | |
0c3d84be | 1589 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1590 | (unsigned) current_event.dwProcessId, |
1591 | (unsigned) current_event.dwThreadId, | |
1592 | "EXIT_THREAD_DEBUG_EVENT")); | |
2eab46b1 JB |
1593 | windows_delete_thread (ptid_t (current_event.dwProcessId, 0, |
1594 | current_event.dwThreadId), | |
c559d709 JB |
1595 | current_event.u.ExitThread.dwExitCode, |
1596 | false /* main_thread_p */); | |
2eab46b1 | 1597 | th = &dummy_thread_info; |
1e37c281 JM |
1598 | break; |
1599 | ||
1600 | case CREATE_PROCESS_DEBUG_EVENT: | |
0c3d84be | 1601 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1602 | (unsigned) current_event.dwProcessId, |
1603 | (unsigned) current_event.dwThreadId, | |
1604 | "CREATE_PROCESS_DEBUG_EVENT")); | |
700b351b | 1605 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1606 | if (++saw_create != 1) |
bf25528d | 1607 | break; |
1e37c281 | 1608 | |
dfe7f3ac | 1609 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
581e13c1 | 1610 | /* Add the main thread. */ |
c559d709 JB |
1611 | th = windows_add_thread |
1612 | (ptid_t (current_event.dwProcessId, 0, | |
1613 | current_event.dwThreadId), | |
1614 | current_event.u.CreateProcessInfo.hThread, | |
1615 | current_event.u.CreateProcessInfo.lpThreadLocalBase, | |
1616 | true /* main_thread_p */); | |
e6ad66bd | 1617 | thread_id = current_event.dwThreadId; |
1e37c281 JM |
1618 | break; |
1619 | ||
1620 | case EXIT_PROCESS_DEBUG_EVENT: | |
0c3d84be | 1621 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1622 | (unsigned) current_event.dwProcessId, |
1623 | (unsigned) current_event.dwThreadId, | |
1624 | "EXIT_PROCESS_DEBUG_EVENT")); | |
16d905e2 CF |
1625 | if (!windows_initialization_done) |
1626 | { | |
223ffa71 | 1627 | target_terminal::ours (); |
bc1e6c81 | 1628 | target_mourn_inferior (inferior_ptid); |
16d905e2 CF |
1629 | error (_("During startup program exited with code 0x%x."), |
1630 | (unsigned int) current_event.u.ExitProcess.dwExitCode); | |
1631 | } | |
1632 | else if (saw_create == 1) | |
1633 | { | |
2eab46b1 | 1634 | windows_delete_thread (ptid_t (current_event.dwProcessId, 0, |
8ed5b76e | 1635 | current_event.dwThreadId), |
c559d709 | 1636 | 0, true /* main_thread_p */); |
559e7e50 EZ |
1637 | DWORD exit_status = current_event.u.ExitProcess.dwExitCode; |
1638 | /* If the exit status looks like a fatal exception, but we | |
1639 | don't recognize the exception's code, make the original | |
1640 | exit status value available, to avoid losing | |
1641 | information. */ | |
1642 | int exit_signal | |
1643 | = WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1; | |
1644 | if (exit_signal == -1) | |
1645 | { | |
1646 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1647 | ourstatus->value.integer = exit_status; | |
1648 | } | |
1649 | else | |
1650 | { | |
1651 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1652 | ourstatus->value.sig = gdb_signal_from_host (exit_signal); | |
1653 | } | |
8ed5b76e | 1654 | thread_id = current_event.dwThreadId; |
16d905e2 | 1655 | } |
8a892701 | 1656 | break; |
1e37c281 JM |
1657 | |
1658 | case LOAD_DLL_DEBUG_EVENT: | |
0c3d84be | 1659 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1660 | (unsigned) current_event.dwProcessId, |
1661 | (unsigned) current_event.dwThreadId, | |
1662 | "LOAD_DLL_DEBUG_EVENT")); | |
700b351b | 1663 | CloseHandle (current_event.u.LoadDll.hFile); |
ea39ad35 | 1664 | if (saw_create != 1 || ! windows_initialization_done) |
dfe7f3ac | 1665 | break; |
bf469271 | 1666 | catch_errors (handle_load_dll); |
450005e7 CF |
1667 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1668 | ourstatus->value.integer = 0; | |
ab4ee614 | 1669 | thread_id = current_event.dwThreadId; |
1e37c281 JM |
1670 | break; |
1671 | ||
1672 | case UNLOAD_DLL_DEBUG_EVENT: | |
0c3d84be | 1673 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1674 | (unsigned) current_event.dwProcessId, |
1675 | (unsigned) current_event.dwThreadId, | |
1676 | "UNLOAD_DLL_DEBUG_EVENT")); | |
ea39ad35 | 1677 | if (saw_create != 1 || ! windows_initialization_done) |
dfe7f3ac | 1678 | break; |
bf469271 | 1679 | catch_errors (handle_unload_dll); |
de1b3c3d PA |
1680 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1681 | ourstatus->value.integer = 0; | |
ab4ee614 | 1682 | thread_id = current_event.dwThreadId; |
d3ff4a77 | 1683 | break; |
1e37c281 JM |
1684 | |
1685 | case EXCEPTION_DEBUG_EVENT: | |
0c3d84be | 1686 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1687 | (unsigned) current_event.dwProcessId, |
1688 | (unsigned) current_event.dwThreadId, | |
1689 | "EXCEPTION_DEBUG_EVENT")); | |
dfe7f3ac CF |
1690 | if (saw_create != 1) |
1691 | break; | |
24cdb46e РИ |
1692 | switch (handle_exception (ourstatus)) |
1693 | { | |
1694 | case HANDLE_EXCEPTION_UNHANDLED: | |
1695 | default: | |
1696 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1697 | break; | |
1698 | case HANDLE_EXCEPTION_HANDLED: | |
1699 | thread_id = current_event.dwThreadId; | |
1700 | break; | |
1701 | case HANDLE_EXCEPTION_IGNORED: | |
1702 | continue_status = DBG_CONTINUE; | |
1703 | break; | |
1704 | } | |
1e37c281 JM |
1705 | break; |
1706 | ||
581e13c1 | 1707 | case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */ |
0c3d84be | 1708 | DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n", |
8a892701 CF |
1709 | (unsigned) current_event.dwProcessId, |
1710 | (unsigned) current_event.dwThreadId, | |
1711 | "OUTPUT_DEBUG_STRING_EVENT")); | |
dfe7f3ac CF |
1712 | if (saw_create != 1) |
1713 | break; | |
e6ad66bd | 1714 | thread_id = handle_output_debug_string (ourstatus); |
1e37c281 | 1715 | break; |
9d3789f7 | 1716 | |
1e37c281 | 1717 | default: |
dfe7f3ac CF |
1718 | if (saw_create != 1) |
1719 | break; | |
0c3d84be | 1720 | printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n", |
d50a0ce2 CV |
1721 | (unsigned) current_event.dwProcessId, |
1722 | (unsigned) current_event.dwThreadId); | |
1723 | printf_unfiltered (" unknown event code %u\n", | |
1724 | (unsigned) current_event.dwDebugEventCode); | |
1e37c281 JM |
1725 | break; |
1726 | } | |
1727 | ||
e6ad66bd | 1728 | if (!thread_id || saw_create != 1) |
a244bdca | 1729 | { |
95824559 | 1730 | CHECK (windows_continue (continue_status, -1, 0)); |
a244bdca | 1731 | } |
450005e7 | 1732 | else |
9d3789f7 | 1733 | { |
fd79271b | 1734 | inferior_ptid = ptid_t (current_event.dwProcessId, 0, thread_id); |
776704b9 JT |
1735 | current_thread = th; |
1736 | if (!current_thread) | |
f16eab5f | 1737 | current_thread = thread_rec (thread_id, TRUE); |
9d3789f7 | 1738 | } |
1e37c281 JM |
1739 | |
1740 | out: | |
e6ad66bd | 1741 | return thread_id; |
1e37c281 JM |
1742 | } |
1743 | ||
2dc38344 | 1744 | /* Wait for interesting events to occur in the target process. */ |
f6ac5f3d PA |
1745 | ptid_t |
1746 | windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
1747 | int options) | |
24e60978 | 1748 | { |
2dc38344 | 1749 | int pid = -1; |
39f77062 | 1750 | |
24e60978 SC |
1751 | /* We loop when we get a non-standard exception rather than return |
1752 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1753 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 | 1754 | the birth or death of threads, which mean that the current thread |
581e13c1 | 1755 | isn't necessarily what you think it is. */ |
24e60978 SC |
1756 | |
1757 | while (1) | |
450005e7 | 1758 | { |
c57918b2 | 1759 | int retval; |
2b008701 | 1760 | |
695de547 CF |
1761 | /* If the user presses Ctrl-c while the debugger is waiting |
1762 | for an event, he expects the debugger to interrupt his program | |
1763 | and to get the prompt back. There are two possible situations: | |
1764 | ||
1765 | - The debugger and the program do not share the console, in | |
1766 | which case the Ctrl-c event only reached the debugger. | |
1767 | In that case, the ctrl_c handler will take care of interrupting | |
581e13c1 MS |
1768 | the inferior. Note that this case is working starting with |
1769 | Windows XP. For Windows 2000, Ctrl-C should be pressed in the | |
695de547 CF |
1770 | inferior console. |
1771 | ||
1772 | - The debugger and the program share the same console, in which | |
1773 | case both debugger and inferior will receive the Ctrl-c event. | |
1774 | In that case the ctrl_c handler will ignore the event, as the | |
1775 | Ctrl-c event generated inside the inferior will trigger the | |
1776 | expected debug event. | |
1777 | ||
1778 | FIXME: brobecker/2008-05-20: If the inferior receives the | |
1779 | signal first and the delay until GDB receives that signal | |
1780 | is sufficiently long, GDB can sometimes receive the SIGINT | |
1781 | after we have unblocked the CTRL+C handler. This would | |
1782 | lead to the debugger stopping prematurely while handling | |
1783 | the new-thread event that comes with the handling of the SIGINT | |
1784 | inside the inferior, and then stop again immediately when | |
1785 | the user tries to resume the execution in the inferior. | |
1786 | This is a classic race that we should try to fix one day. */ | |
1787 | SetConsoleCtrlHandler (&ctrl_c_handler, TRUE); | |
5b6d1e4f | 1788 | retval = get_windows_debug_event (pid, ourstatus); |
695de547 | 1789 | SetConsoleCtrlHandler (&ctrl_c_handler, FALSE); |
c57918b2 | 1790 | |
450005e7 | 1791 | if (retval) |
fd79271b | 1792 | return ptid_t (current_event.dwProcessId, 0, retval); |
450005e7 CF |
1793 | else |
1794 | { | |
1795 | int detach = 0; | |
3cee93ac | 1796 | |
98bbd631 AC |
1797 | if (deprecated_ui_loop_hook != NULL) |
1798 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1799 | |
450005e7 | 1800 | if (detach) |
f6ac5f3d | 1801 | kill (); |
450005e7 CF |
1802 | } |
1803 | } | |
24e60978 SC |
1804 | } |
1805 | ||
ea39ad35 JB |
1806 | /* Iterate over all DLLs currently mapped by our inferior, and |
1807 | add them to our list of solibs. */ | |
94481b8c JB |
1808 | |
1809 | static void | |
ea39ad35 | 1810 | windows_add_all_dlls (void) |
94481b8c | 1811 | { |
94481b8c JB |
1812 | HMODULE dummy_hmodule; |
1813 | DWORD cb_needed; | |
1814 | HMODULE *hmodules; | |
1815 | int i; | |
1816 | ||
94481b8c JB |
1817 | if (EnumProcessModules (current_process_handle, &dummy_hmodule, |
1818 | sizeof (HMODULE), &cb_needed) == 0) | |
1819 | return; | |
1820 | ||
1821 | if (cb_needed < 1) | |
1822 | return; | |
1823 | ||
1824 | hmodules = (HMODULE *) alloca (cb_needed); | |
1825 | if (EnumProcessModules (current_process_handle, hmodules, | |
1826 | cb_needed, &cb_needed) == 0) | |
1827 | return; | |
1828 | ||
ea39ad35 | 1829 | for (i = 1; i < (int) (cb_needed / sizeof (HMODULE)); i++) |
94481b8c JB |
1830 | { |
1831 | MODULEINFO mi; | |
774f74c2 PM |
1832 | #ifdef __USEWIDE |
1833 | wchar_t dll_name[__PMAX]; | |
1834 | char name[__PMAX]; | |
1835 | #else | |
94481b8c | 1836 | char dll_name[__PMAX]; |
774f74c2 PM |
1837 | char *name; |
1838 | #endif | |
94481b8c JB |
1839 | if (GetModuleInformation (current_process_handle, hmodules[i], |
1840 | &mi, sizeof (mi)) == 0) | |
1841 | continue; | |
1842 | if (GetModuleFileNameEx (current_process_handle, hmodules[i], | |
1843 | dll_name, sizeof (dll_name)) == 0) | |
1844 | continue; | |
774f74c2 PM |
1845 | #ifdef __USEWIDE |
1846 | wcstombs (name, dll_name, __PMAX); | |
1847 | #else | |
1848 | name = dll_name; | |
1849 | #endif | |
ea39ad35 JB |
1850 | |
1851 | solib_end->next = windows_make_so (name, mi.lpBaseOfDll); | |
1852 | solib_end = solib_end->next; | |
94481b8c JB |
1853 | } |
1854 | } | |
1855 | ||
9d3789f7 | 1856 | static void |
dc05df57 | 1857 | do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching) |
9d3789f7 | 1858 | { |
fa4ba8da | 1859 | int i; |
d6b48e9c | 1860 | struct inferior *inf; |
9d3789f7 | 1861 | |
a493e3e2 | 1862 | last_sig = GDB_SIGNAL_0; |
9d3789f7 CF |
1863 | event_count = 0; |
1864 | exception_count = 0; | |
bf25528d | 1865 | open_process_used = 0; |
fa4ba8da | 1866 | debug_registers_changed = 0; |
dfe7f3ac | 1867 | debug_registers_used = 0; |
fa4ba8da PM |
1868 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1869 | dr[i] = 0; | |
10325bc5 | 1870 | #ifdef __CYGWIN__ |
de1b3c3d | 1871 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1872 | #endif |
9d3789f7 CF |
1873 | current_event.dwProcessId = pid; |
1874 | memset (¤t_event, 0, sizeof (current_event)); | |
6a3cb8e8 PA |
1875 | if (!target_is_pushed (ops)) |
1876 | push_target (ops); | |
cb851954 | 1877 | disable_breakpoints_in_shlibs (); |
dc05df57 | 1878 | windows_clear_solib (); |
88056fbb | 1879 | clear_proceed_status (0); |
9d3789f7 CF |
1880 | init_wait_for_inferior (); |
1881 | ||
6c95b8df PA |
1882 | inf = current_inferior (); |
1883 | inferior_appeared (inf, pid); | |
181e7f93 | 1884 | inf->attach_flag = attaching; |
7f9f62ba | 1885 | |
9f9d052e PM |
1886 | /* Make the new process the current inferior, so terminal handling |
1887 | can rely on it. When attaching, we don't know about any thread | |
1888 | id here, but that's OK --- nothing should be referencing the | |
dc05df57 | 1889 | current thread until we report an event out of windows_wait. */ |
f2907e49 | 1890 | inferior_ptid = ptid_t (pid); |
9f9d052e | 1891 | |
223ffa71 TT |
1892 | target_terminal::init (); |
1893 | target_terminal::inferior (); | |
9d3789f7 | 1894 | |
16d905e2 | 1895 | windows_initialization_done = 0; |
c72f45d1 | 1896 | |
9d3789f7 CF |
1897 | while (1) |
1898 | { | |
c72f45d1 PA |
1899 | struct target_waitstatus status; |
1900 | ||
f6ac5f3d | 1901 | ops->wait (minus_one_ptid, &status, 0); |
c72f45d1 PA |
1902 | |
1903 | /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread | |
1904 | events. */ | |
1905 | if (status.kind != TARGET_WAITKIND_LOADED | |
1906 | && status.kind != TARGET_WAITKIND_SPURIOUS) | |
9d3789f7 | 1907 | break; |
c72f45d1 | 1908 | |
f6ac5f3d | 1909 | ops->resume (minus_one_ptid, 0, GDB_SIGNAL_0); |
9d3789f7 | 1910 | } |
eff8332b | 1911 | |
ea39ad35 | 1912 | /* Now that the inferior has been started and all DLLs have been mapped, |
3be75f87 JB |
1913 | we can iterate over all DLLs and load them in. |
1914 | ||
1915 | We avoid doing it any earlier because, on certain versions of Windows, | |
1916 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
1917 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
1918 | include the DLL name, preventing us from creating an associated SO. | |
1919 | A possible explanation is that ntdll.dll might be mapped before | |
1920 | the SO info gets created by the Windows system -- ntdll.dll is | |
1921 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
1922 | do not seem to suffer from that problem. | |
1923 | ||
1924 | Rather than try to work around this sort of issue, it is much | |
1925 | simpler to just ignore DLL load/unload events during the startup | |
1926 | phase, and then process them all in one batch now. */ | |
ea39ad35 | 1927 | windows_add_all_dlls (); |
94481b8c | 1928 | |
16d905e2 | 1929 | windows_initialization_done = 1; |
9d3789f7 CF |
1930 | return; |
1931 | } | |
1932 | ||
616a9dc4 CV |
1933 | /* Try to set or remove a user privilege to the current process. Return -1 |
1934 | if that fails, the previous setting of that privilege otherwise. | |
1935 | ||
1936 | This code is copied from the Cygwin source code and rearranged to allow | |
1937 | dynamically loading of the needed symbols from advapi32 which is only | |
581e13c1 | 1938 | available on NT/2K/XP. */ |
616a9dc4 CV |
1939 | static int |
1940 | set_process_privilege (const char *privilege, BOOL enable) | |
1941 | { | |
616a9dc4 CV |
1942 | HANDLE token_hdl = NULL; |
1943 | LUID restore_priv; | |
1944 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1945 | int ret = -1; | |
1946 | DWORD size; | |
1947 | ||
616a9dc4 CV |
1948 | if (!OpenProcessToken (GetCurrentProcess (), |
1949 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1950 | &token_hdl)) | |
1951 | goto out; | |
1952 | ||
418c6cb3 | 1953 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1954 | goto out; |
1955 | ||
1956 | new_priv.PrivilegeCount = 1; | |
1957 | new_priv.Privileges[0].Luid = restore_priv; | |
1958 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1959 | ||
1960 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1961 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1962 | goto out; |
1963 | #if 0 | |
1964 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1965 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
581e13c1 | 1966 | windows_attach(). */ |
616a9dc4 | 1967 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
581e13c1 | 1968 | be enabled. GetLastError () returns an correct error code, though. */ |
616a9dc4 CV |
1969 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) |
1970 | goto out; | |
1971 | #endif | |
1972 | ||
1973 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1974 | ||
1975 | out: | |
1976 | if (token_hdl) | |
1977 | CloseHandle (token_hdl); | |
1978 | ||
1979 | return ret; | |
1980 | } | |
1981 | ||
02cc9f49 | 1982 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
1983 | |
1984 | void | |
1985 | windows_nat_target::attach (const char *args, int from_tty) | |
24e60978 SC |
1986 | { |
1987 | BOOL ok; | |
559e75c0 | 1988 | DWORD pid; |
24e60978 | 1989 | |
74164c56 | 1990 | pid = parse_pid_to_attach (args); |
24e60978 | 1991 | |
616a9dc4 CV |
1992 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1993 | { | |
1994 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
581e13c1 MS |
1995 | printf_unfiltered ("This can cause attach to " |
1996 | "fail on Windows NT/2K/XP\n"); | |
616a9dc4 CV |
1997 | } |
1998 | ||
dc05df57 | 1999 | windows_init_thread_list (); |
9d3789f7 | 2000 | ok = DebugActiveProcess (pid); |
91a175b3 | 2001 | saw_create = 0; |
24e60978 | 2002 | |
10325bc5 | 2003 | #ifdef __CYGWIN__ |
24e60978 | 2004 | if (!ok) |
baa93fa6 | 2005 | { |
581e13c1 | 2006 | /* Try fall back to Cygwin pid. */ |
baa93fa6 CF |
2007 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
2008 | ||
2009 | if (pid > 0) | |
2010 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
2011 | } |
2012 | #endif | |
baa93fa6 | 2013 | |
10325bc5 | 2014 | if (!ok) |
c9739b6a TT |
2015 | error (_("Can't attach to process %u (error %u)"), |
2016 | (unsigned) pid, (unsigned) GetLastError ()); | |
24e60978 | 2017 | |
2b008701 | 2018 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 2019 | |
24e60978 SC |
2020 | if (from_tty) |
2021 | { | |
d9fa87f4 | 2022 | const char *exec_file = get_exec_file (0); |
24e60978 SC |
2023 | |
2024 | if (exec_file) | |
2025 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
a068643d | 2026 | target_pid_to_str (ptid_t (pid)).c_str ()); |
24e60978 SC |
2027 | else |
2028 | printf_unfiltered ("Attaching to %s\n", | |
a068643d | 2029 | target_pid_to_str (ptid_t (pid)).c_str ()); |
24e60978 SC |
2030 | } |
2031 | ||
f6ac5f3d | 2032 | do_initial_windows_stuff (this, pid, 1); |
223ffa71 | 2033 | target_terminal::ours (); |
24e60978 SC |
2034 | } |
2035 | ||
f6ac5f3d PA |
2036 | void |
2037 | windows_nat_target::detach (inferior *inf, int from_tty) | |
24e60978 | 2038 | { |
02cc9f49 CV |
2039 | int detached = 1; |
2040 | ||
8473b447 | 2041 | ptid_t ptid = minus_one_ptid; |
f6ac5f3d | 2042 | resume (ptid, 0, GDB_SIGNAL_0); |
96998ce7 | 2043 | |
2b008701 CF |
2044 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
2045 | { | |
d50a0ce2 CV |
2046 | error (_("Can't detach process %u (error %u)"), |
2047 | (unsigned) current_event.dwProcessId, (unsigned) GetLastError ()); | |
2b008701 | 2048 | detached = 0; |
02cc9f49 | 2049 | } |
2b008701 CF |
2050 | DebugSetProcessKillOnExit (FALSE); |
2051 | ||
02cc9f49 | 2052 | if (detached && from_tty) |
24e60978 | 2053 | { |
a121b7c1 | 2054 | const char *exec_file = get_exec_file (0); |
24e60978 SC |
2055 | if (exec_file == 0) |
2056 | exec_file = ""; | |
d50a0ce2 CV |
2057 | printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file, |
2058 | (unsigned) current_event.dwProcessId); | |
24e60978 | 2059 | } |
7f9f62ba | 2060 | |
df7e5265 | 2061 | x86_cleanup_dregs (); |
39f77062 | 2062 | inferior_ptid = null_ptid; |
b7a08269 | 2063 | detach_inferior (inf); |
7f9f62ba | 2064 | |
f6ac5f3d | 2065 | maybe_unpush_target (); |
24e60978 SC |
2066 | } |
2067 | ||
47f7ffdb JB |
2068 | /* Try to determine the executable filename. |
2069 | ||
2070 | EXE_NAME_RET is a pointer to a buffer whose size is EXE_NAME_MAX_LEN. | |
2071 | ||
2072 | Upon success, the filename is stored inside EXE_NAME_RET, and | |
2073 | this function returns nonzero. | |
2074 | ||
2075 | Otherwise, this function returns zero and the contents of | |
2076 | EXE_NAME_RET is undefined. */ | |
2077 | ||
2078 | static int | |
2079 | windows_get_exec_module_filename (char *exe_name_ret, size_t exe_name_max_len) | |
2080 | { | |
2081 | DWORD len; | |
2082 | HMODULE dh_buf; | |
2083 | DWORD cbNeeded; | |
2084 | ||
2085 | cbNeeded = 0; | |
2086 | if (!EnumProcessModules (current_process_handle, &dh_buf, | |
2087 | sizeof (HMODULE), &cbNeeded) || !cbNeeded) | |
2088 | return 0; | |
2089 | ||
2090 | /* We know the executable is always first in the list of modules, | |
2091 | which we just fetched. So no need to fetch more. */ | |
2092 | ||
2093 | #ifdef __CYGWIN__ | |
2094 | { | |
2095 | /* Cygwin prefers that the path be in /x/y/z format, so extract | |
2096 | the filename into a temporary buffer first, and then convert it | |
2097 | to POSIX format into the destination buffer. */ | |
0ae534d2 | 2098 | cygwin_buf_t *pathbuf = (cygwin_buf_t *) alloca (exe_name_max_len * sizeof (cygwin_buf_t)); |
47f7ffdb JB |
2099 | |
2100 | len = GetModuleFileNameEx (current_process_handle, | |
2101 | dh_buf, pathbuf, exe_name_max_len); | |
2102 | if (len == 0) | |
2103 | error (_("Error getting executable filename: %u."), | |
2104 | (unsigned) GetLastError ()); | |
2105 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, exe_name_ret, | |
2106 | exe_name_max_len) < 0) | |
2107 | error (_("Error converting executable filename to POSIX: %d."), errno); | |
2108 | } | |
2109 | #else | |
2110 | len = GetModuleFileNameEx (current_process_handle, | |
2111 | dh_buf, exe_name_ret, exe_name_max_len); | |
2112 | if (len == 0) | |
2113 | error (_("Error getting executable filename: %u."), | |
2114 | (unsigned) GetLastError ()); | |
2115 | #endif | |
2116 | ||
2117 | return 1; /* success */ | |
2118 | } | |
2119 | ||
2120 | /* The pid_to_exec_file target_ops method for this platform. */ | |
2121 | ||
f6ac5f3d PA |
2122 | char * |
2123 | windows_nat_target::pid_to_exec_file (int pid) | |
47216e51 | 2124 | { |
b3c613f2 | 2125 | static char path[__PMAX]; |
10325bc5 | 2126 | #ifdef __CYGWIN__ |
581e13c1 | 2127 | /* Try to find exe name as symlink target of /proc/<pid>/exe. */ |
33605d39 CF |
2128 | int nchars; |
2129 | char procexe[sizeof ("/proc/4294967295/exe")]; | |
08850b56 PM |
2130 | |
2131 | xsnprintf (procexe, sizeof (procexe), "/proc/%u/exe", pid); | |
33605d39 CF |
2132 | nchars = readlink (procexe, path, sizeof(path)); |
2133 | if (nchars > 0 && nchars < sizeof (path)) | |
47216e51 | 2134 | { |
33605d39 CF |
2135 | path[nchars] = '\0'; /* Got it */ |
2136 | return path; | |
47216e51 | 2137 | } |
10325bc5 PA |
2138 | #endif |
2139 | ||
33605d39 | 2140 | /* If we get here then either Cygwin is hosed, this isn't a Cygwin version |
581e13c1 | 2141 | of gdb, or we're trying to debug a non-Cygwin windows executable. */ |
47f7ffdb | 2142 | if (!windows_get_exec_module_filename (path, sizeof (path))) |
33605d39 CF |
2143 | path[0] = '\0'; |
2144 | ||
2145 | return path; | |
47216e51 CV |
2146 | } |
2147 | ||
24e60978 SC |
2148 | /* Print status information about what we're accessing. */ |
2149 | ||
f6ac5f3d PA |
2150 | void |
2151 | windows_nat_target::files_info () | |
24e60978 | 2152 | { |
181e7f93 PA |
2153 | struct inferior *inf = current_inferior (); |
2154 | ||
24e60978 | 2155 | printf_unfiltered ("\tUsing the running image of %s %s.\n", |
181e7f93 | 2156 | inf->attach_flag ? "attached" : "child", |
a068643d | 2157 | target_pid_to_str (inferior_ptid).c_str ()); |
24e60978 SC |
2158 | } |
2159 | ||
cd44747c PM |
2160 | /* Modify CreateProcess parameters for use of a new separate console. |
2161 | Parameters are: | |
2162 | *FLAGS: DWORD parameter for general process creation flags. | |
2163 | *SI: STARTUPINFO structure, for which the console window size and | |
2164 | console buffer size is filled in if GDB is running in a console. | |
2165 | to create the new console. | |
2166 | The size of the used font is not available on all versions of | |
2167 | Windows OS. Furthermore, the current font might not be the default | |
2168 | font, but this is still better than before. | |
2169 | If the windows and buffer sizes are computed, | |
2170 | SI->DWFLAGS is changed so that this information is used | |
2171 | by CreateProcess function. */ | |
2172 | ||
2173 | static void | |
2174 | windows_set_console_info (STARTUPINFO *si, DWORD *flags) | |
2175 | { | |
2176 | HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE, | |
2177 | FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0); | |
2178 | ||
2179 | if (hconsole != INVALID_HANDLE_VALUE) | |
2180 | { | |
2181 | CONSOLE_SCREEN_BUFFER_INFO sbinfo; | |
2182 | COORD font_size; | |
2183 | CONSOLE_FONT_INFO cfi; | |
2184 | ||
2185 | GetCurrentConsoleFont (hconsole, FALSE, &cfi); | |
2186 | font_size = GetConsoleFontSize (hconsole, cfi.nFont); | |
2187 | GetConsoleScreenBufferInfo(hconsole, &sbinfo); | |
2188 | si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1; | |
2189 | si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1; | |
2190 | if (font_size.X) | |
2191 | si->dwXSize *= font_size.X; | |
2192 | else | |
2193 | si->dwXSize *= 8; | |
2194 | if (font_size.Y) | |
2195 | si->dwYSize *= font_size.Y; | |
2196 | else | |
2197 | si->dwYSize *= 12; | |
2198 | si->dwXCountChars = sbinfo.dwSize.X; | |
2199 | si->dwYCountChars = sbinfo.dwSize.Y; | |
2200 | si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS; | |
2201 | } | |
2202 | *flags |= CREATE_NEW_CONSOLE; | |
2203 | } | |
2204 | ||
c93dbcba EZ |
2205 | #ifndef __CYGWIN__ |
2206 | /* Function called by qsort to sort environment strings. */ | |
2207 | ||
2208 | static int | |
2209 | envvar_cmp (const void *a, const void *b) | |
2210 | { | |
2211 | const char **p = (const char **) a; | |
2212 | const char **q = (const char **) b; | |
2213 | return strcasecmp (*p, *q); | |
2214 | } | |
2215 | #endif | |
2216 | ||
b7ff339d CV |
2217 | #ifdef __CYGWIN__ |
2218 | static void | |
2219 | clear_win32_environment (char **env) | |
2220 | { | |
2221 | int i; | |
2222 | size_t len; | |
2223 | wchar_t *copy = NULL, *equalpos; | |
2224 | ||
2225 | for (i = 0; env[i] && *env[i]; i++) | |
2226 | { | |
2227 | len = mbstowcs (NULL, env[i], 0) + 1; | |
2228 | copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t)); | |
2229 | mbstowcs (copy, env[i], len); | |
2230 | equalpos = wcschr (copy, L'='); | |
2231 | if (equalpos) | |
2232 | *equalpos = L'\0'; | |
2233 | SetEnvironmentVariableW (copy, NULL); | |
2234 | } | |
2235 | xfree (copy); | |
2236 | } | |
2237 | #endif | |
2238 | ||
8ba42bc5 EZ |
2239 | #ifndef __CYGWIN__ |
2240 | ||
2241 | /* Redirection of inferior I/O streams for native MS-Windows programs. | |
2242 | Unlike on Unix, where this is handled by invoking the inferior via | |
2243 | the shell, on MS-Windows we need to emulate the cmd.exe shell. | |
2244 | ||
2245 | The official documentation of the cmd.exe redirection features is here: | |
2246 | ||
2247 | http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx | |
2248 | ||
2249 | (That page talks about Windows XP, but there's no newer | |
2250 | documentation, so we assume later versions of cmd.exe didn't change | |
2251 | anything.) | |
2252 | ||
2253 | Caveat: the documentation on that page seems to include a few lies. | |
2254 | For example, it describes strange constructs 1<&2 and 2<&1, which | |
2255 | seem to work only when 1>&2 resp. 2>&1 would make sense, and so I | |
2256 | think the cmd.exe parser of the redirection symbols simply doesn't | |
2257 | care about the < vs > distinction in these cases. Therefore, the | |
2258 | supported features are explicitly documented below. | |
2259 | ||
2260 | The emulation below aims at supporting all the valid use cases | |
2261 | supported by cmd.exe, which include: | |
2262 | ||
2263 | < FILE redirect standard input from FILE | |
2264 | 0< FILE redirect standard input from FILE | |
2265 | <&N redirect standard input from file descriptor N | |
2266 | 0<&N redirect standard input from file descriptor N | |
2267 | > FILE redirect standard output to FILE | |
2268 | >> FILE append standard output to FILE | |
2269 | 1>> FILE append standard output to FILE | |
2270 | >&N redirect standard output to file descriptor N | |
2271 | 1>&N redirect standard output to file descriptor N | |
2272 | >>&N append standard output to file descriptor N | |
2273 | 1>>&N append standard output to file descriptor N | |
2274 | 2> FILE redirect standard error to FILE | |
2275 | 2>> FILE append standard error to FILE | |
2276 | 2>&N redirect standard error to file descriptor N | |
2277 | 2>>&N append standard error to file descriptor N | |
2278 | ||
2279 | Note that using N > 2 in the above construct is supported, but | |
2280 | requires that the corresponding file descriptor be open by some | |
2281 | means elsewhere or outside GDB. Also note that using ">&0" or | |
2282 | "<&2" will generally fail, because the file descriptor redirected | |
2283 | from is normally open in an incompatible mode (e.g., FD 0 is open | |
2284 | for reading only). IOW, use of such tricks is not recommended; | |
2285 | you are on your own. | |
2286 | ||
2287 | We do NOT support redirection of file descriptors above 2, as in | |
2288 | "3>SOME-FILE", because MinGW compiled programs don't (supporting | |
2289 | that needs special handling in the startup code that MinGW | |
2290 | doesn't have). Pipes are also not supported. | |
2291 | ||
2292 | As for invalid use cases, where the redirection contains some | |
2293 | error, the emulation below will detect that and produce some | |
2294 | error and/or failure. But the behavior in those cases is not | |
2295 | bug-for-bug compatible with what cmd.exe does in those cases. | |
2296 | That's because what cmd.exe does then is not well defined, and | |
2297 | seems to be a side effect of the cmd.exe parsing of the command | |
2298 | line more than anything else. For example, try redirecting to an | |
2299 | invalid file name, as in "> foo:bar". | |
2300 | ||
2301 | There are also minor syntactic deviations from what cmd.exe does | |
2302 | in some corner cases. For example, it doesn't support the likes | |
2303 | of "> &foo" to mean redirect to file named literally "&foo"; we | |
2304 | do support that here, because that, too, sounds like some issue | |
2305 | with the cmd.exe parser. Another nicety is that we support | |
2306 | redirection targets that use file names with forward slashes, | |
2307 | something cmd.exe doesn't -- this comes in handy since GDB | |
2308 | file-name completion can be used when typing the command line for | |
2309 | the inferior. */ | |
2310 | ||
2311 | /* Support routines for redirecting standard handles of the inferior. */ | |
2312 | ||
2313 | /* Parse a single redirection spec, open/duplicate the specified | |
2314 | file/fd, and assign the appropriate value to one of the 3 standard | |
2315 | file descriptors. */ | |
2316 | static int | |
2317 | redir_open (const char *redir_string, int *inp, int *out, int *err) | |
2318 | { | |
2319 | int *fd, ref_fd = -2; | |
2320 | int mode; | |
2321 | const char *fname = redir_string + 1; | |
2322 | int rc = *redir_string; | |
2323 | ||
2324 | switch (rc) | |
2325 | { | |
2326 | case '0': | |
2327 | fname++; | |
2328 | /* FALLTHROUGH */ | |
2329 | case '<': | |
2330 | fd = inp; | |
2331 | mode = O_RDONLY; | |
2332 | break; | |
2333 | case '1': case '2': | |
2334 | fname++; | |
2335 | /* FALLTHROUGH */ | |
2336 | case '>': | |
2337 | fd = (rc == '2') ? err : out; | |
2338 | mode = O_WRONLY | O_CREAT; | |
2339 | if (*fname == '>') | |
2340 | { | |
2341 | fname++; | |
2342 | mode |= O_APPEND; | |
2343 | } | |
2344 | else | |
2345 | mode |= O_TRUNC; | |
2346 | break; | |
2347 | default: | |
2348 | return -1; | |
2349 | } | |
2350 | ||
2351 | if (*fname == '&' && '0' <= fname[1] && fname[1] <= '9') | |
2352 | { | |
2353 | /* A reference to a file descriptor. */ | |
2354 | char *fdtail; | |
2355 | ref_fd = (int) strtol (fname + 1, &fdtail, 10); | |
2356 | if (fdtail > fname + 1 && *fdtail == '\0') | |
2357 | { | |
2358 | /* Don't allow redirection when open modes are incompatible. */ | |
2359 | if ((ref_fd == 0 && (fd == out || fd == err)) | |
2360 | || ((ref_fd == 1 || ref_fd == 2) && fd == inp)) | |
2361 | { | |
2362 | errno = EPERM; | |
2363 | return -1; | |
2364 | } | |
2365 | if (ref_fd == 0) | |
2366 | ref_fd = *inp; | |
2367 | else if (ref_fd == 1) | |
2368 | ref_fd = *out; | |
2369 | else if (ref_fd == 2) | |
2370 | ref_fd = *err; | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | errno = EBADF; | |
2375 | return -1; | |
2376 | } | |
2377 | } | |
2378 | else | |
2379 | fname++; /* skip the separator space */ | |
2380 | /* If the descriptor is already open, close it. This allows | |
2381 | multiple specs of redirections for the same stream, which is | |
2382 | somewhat nonsensical, but still valid and supported by cmd.exe. | |
2383 | (But cmd.exe only opens a single file in this case, the one | |
2384 | specified by the last redirection spec on the command line.) */ | |
2385 | if (*fd >= 0) | |
2386 | _close (*fd); | |
2387 | if (ref_fd == -2) | |
2388 | { | |
2389 | *fd = _open (fname, mode, _S_IREAD | _S_IWRITE); | |
2390 | if (*fd < 0) | |
2391 | return -1; | |
2392 | } | |
2393 | else if (ref_fd == -1) | |
2394 | *fd = -1; /* reset to default destination */ | |
2395 | else | |
2396 | { | |
2397 | *fd = _dup (ref_fd); | |
2398 | if (*fd < 0) | |
2399 | return -1; | |
2400 | } | |
2401 | /* _open just sets a flag for O_APPEND, which won't be passed to the | |
2402 | inferior, so we need to actually move the file pointer. */ | |
2403 | if ((mode & O_APPEND) != 0) | |
2404 | _lseek (*fd, 0L, SEEK_END); | |
2405 | return 0; | |
2406 | } | |
2407 | ||
2408 | /* Canonicalize a single redirection spec and set up the corresponding | |
2409 | file descriptor as specified. */ | |
2410 | static int | |
2411 | redir_set_redirection (const char *s, int *inp, int *out, int *err) | |
2412 | { | |
2413 | char buf[__PMAX + 2 + 5]; /* extra space for quotes & redirection string */ | |
2414 | char *d = buf; | |
2415 | const char *start = s; | |
2416 | int quote = 0; | |
2417 | ||
2418 | *d++ = *s++; /* copy the 1st character, < or > or a digit */ | |
2419 | if ((*start == '>' || *start == '1' || *start == '2') | |
2420 | && *s == '>') | |
2421 | { | |
2422 | *d++ = *s++; | |
2423 | if (*s == '>' && *start != '>') | |
2424 | *d++ = *s++; | |
2425 | } | |
2426 | else if (*start == '0' && *s == '<') | |
2427 | *d++ = *s++; | |
2428 | /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */ | |
2429 | if (*s != '&') | |
2430 | { | |
2431 | while (isspace (*s)) /* skip whitespace before file name */ | |
2432 | s++; | |
2433 | *d++ = ' '; /* separate file name with a single space */ | |
2434 | } | |
2435 | ||
2436 | /* Copy the file name. */ | |
2437 | while (*s) | |
2438 | { | |
2439 | /* Remove quoting characters from the file name in buf[]. */ | |
2440 | if (*s == '"') /* could support '..' quoting here */ | |
2441 | { | |
2442 | if (!quote) | |
2443 | quote = *s++; | |
2444 | else if (*s == quote) | |
2445 | { | |
2446 | quote = 0; | |
2447 | s++; | |
2448 | } | |
2449 | else | |
2450 | *d++ = *s++; | |
2451 | } | |
2452 | else if (*s == '\\') | |
2453 | { | |
2454 | if (s[1] == '"') /* could support '..' here */ | |
2455 | s++; | |
2456 | *d++ = *s++; | |
2457 | } | |
2458 | else if (isspace (*s) && !quote) | |
2459 | break; | |
2460 | else | |
2461 | *d++ = *s++; | |
2462 | if (d - buf >= sizeof (buf) - 1) | |
2463 | { | |
2464 | errno = ENAMETOOLONG; | |
2465 | return 0; | |
2466 | } | |
2467 | } | |
2468 | *d = '\0'; | |
2469 | ||
2470 | /* Windows doesn't allow redirection characters in file names, so we | |
2471 | can bail out early if they use them, or if there's no target file | |
2472 | name after the redirection symbol. */ | |
2473 | if (d[-1] == '>' || d[-1] == '<') | |
2474 | { | |
2475 | errno = ENOENT; | |
2476 | return 0; | |
2477 | } | |
2478 | if (redir_open (buf, inp, out, err) == 0) | |
2479 | return s - start; | |
2480 | return 0; | |
2481 | } | |
2482 | ||
2483 | /* Parse the command line for redirection specs and prepare the file | |
2484 | descriptors for the 3 standard streams accordingly. */ | |
2485 | static bool | |
2486 | redirect_inferior_handles (const char *cmd_orig, char *cmd, | |
2487 | int *inp, int *out, int *err) | |
2488 | { | |
2489 | const char *s = cmd_orig; | |
2490 | char *d = cmd; | |
2491 | int quote = 0; | |
2492 | bool retval = false; | |
2493 | ||
2494 | while (isspace (*s)) | |
2495 | *d++ = *s++; | |
2496 | ||
2497 | while (*s) | |
2498 | { | |
2499 | if (*s == '"') /* could also support '..' quoting here */ | |
2500 | { | |
2501 | if (!quote) | |
2502 | quote = *s; | |
2503 | else if (*s == quote) | |
2504 | quote = 0; | |
2505 | } | |
2506 | else if (*s == '\\') | |
2507 | { | |
2508 | if (s[1] == '"') /* escaped quote char */ | |
2509 | s++; | |
2510 | } | |
2511 | else if (!quote) | |
2512 | { | |
2513 | /* Process a single redirection candidate. */ | |
2514 | if (*s == '<' || *s == '>' | |
2515 | || ((*s == '1' || *s == '2') && s[1] == '>') | |
2516 | || (*s == '0' && s[1] == '<')) | |
2517 | { | |
2518 | int skip = redir_set_redirection (s, inp, out, err); | |
2519 | ||
2520 | if (skip <= 0) | |
2521 | return false; | |
2522 | retval = true; | |
2523 | s += skip; | |
2524 | } | |
2525 | } | |
2526 | if (*s) | |
2527 | *d++ = *s++; | |
2528 | } | |
2529 | *d = '\0'; | |
2530 | return retval; | |
2531 | } | |
2532 | #endif /* !__CYGWIN__ */ | |
2533 | ||
dc05df57 | 2534 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
2535 | EXEC_FILE is the file to run. |
2536 | ALLARGS is a string containing the arguments to the program. | |
2537 | ENV is the environment vector to pass. Errors reported with error(). */ | |
2538 | ||
f6ac5f3d PA |
2539 | void |
2540 | windows_nat_target::create_inferior (const char *exec_file, | |
2541 | const std::string &origallargs, | |
2542 | char **in_env, int from_tty) | |
24e60978 | 2543 | { |
b3c613f2 | 2544 | STARTUPINFO si; |
41b4aadc | 2545 | #ifdef __CYGWIN__ |
b3c613f2 CF |
2546 | cygwin_buf_t real_path[__PMAX]; |
2547 | cygwin_buf_t shell[__PMAX]; /* Path to shell */ | |
d092c5a2 | 2548 | cygwin_buf_t infcwd[__PMAX]; |
d0d0ab16 | 2549 | const char *sh; |
b3c613f2 CF |
2550 | cygwin_buf_t *toexec; |
2551 | cygwin_buf_t *cygallargs; | |
2552 | cygwin_buf_t *args; | |
b7ff339d CV |
2553 | char **old_env = NULL; |
2554 | PWCHAR w32_env; | |
d0d0ab16 | 2555 | size_t len; |
2becadee CF |
2556 | int tty; |
2557 | int ostdin, ostdout, ostderr; | |
8ba42bc5 | 2558 | #else /* !__CYGWIN__ */ |
b3c613f2 | 2559 | char shell[__PMAX]; /* Path to shell */ |
5430098f | 2560 | const char *toexec; |
8ba42bc5 EZ |
2561 | char *args, *allargs_copy; |
2562 | size_t args_len, allargs_len; | |
2563 | int fd_inp = -1, fd_out = -1, fd_err = -1; | |
2564 | HANDLE tty = INVALID_HANDLE_VALUE; | |
8ba42bc5 | 2565 | bool redirected = false; |
c93dbcba EZ |
2566 | char *w32env; |
2567 | char *temp; | |
2568 | size_t envlen; | |
2569 | int i; | |
2570 | size_t envsize; | |
2571 | char **env; | |
8ba42bc5 | 2572 | #endif /* !__CYGWIN__ */ |
096c92dd | 2573 | const char *allargs = origallargs.c_str (); |
d0d0ab16 CV |
2574 | PROCESS_INFORMATION pi; |
2575 | BOOL ret; | |
2576 | DWORD flags = 0; | |
3cb3b8df | 2577 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
24e60978 SC |
2578 | |
2579 | if (!exec_file) | |
8a3fe4f8 | 2580 | error (_("No executable specified, use `target exec'.")); |
24e60978 | 2581 | |
d092c5a2 SDJ |
2582 | const char *inferior_cwd = get_inferior_cwd (); |
2583 | std::string expanded_infcwd; | |
2584 | if (inferior_cwd != NULL) | |
2585 | { | |
2586 | expanded_infcwd = gdb_tilde_expand (inferior_cwd); | |
2587 | /* Mirror slashes on inferior's cwd. */ | |
2588 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), | |
2589 | '/', '\\'); | |
2590 | inferior_cwd = expanded_infcwd.c_str (); | |
2591 | } | |
2592 | ||
24e60978 SC |
2593 | memset (&si, 0, sizeof (si)); |
2594 | si.cb = sizeof (si); | |
2595 | ||
d0d0ab16 CV |
2596 | if (new_group) |
2597 | flags |= CREATE_NEW_PROCESS_GROUP; | |
2598 | ||
2599 | if (new_console) | |
cd44747c | 2600 | windows_set_console_info (&si, &flags); |
d0d0ab16 | 2601 | |
10325bc5 | 2602 | #ifdef __CYGWIN__ |
349b409f | 2603 | if (!useshell) |
dfe7f3ac | 2604 | { |
d0d0ab16 CV |
2605 | flags |= DEBUG_ONLY_THIS_PROCESS; |
2606 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path, | |
b3c613f2 | 2607 | __PMAX * sizeof (cygwin_buf_t)) < 0) |
d0d0ab16 | 2608 | error (_("Error starting executable: %d"), errno); |
dfe7f3ac | 2609 | toexec = real_path; |
b3c613f2 | 2610 | #ifdef __USEWIDE |
d0d0ab16 CV |
2611 | len = mbstowcs (NULL, allargs, 0) + 1; |
2612 | if (len == (size_t) -1) | |
2613 | error (_("Error starting executable: %d"), errno); | |
2614 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2615 | mbstowcs (cygallargs, allargs, len); | |
8ba42bc5 | 2616 | #else /* !__USEWIDE */ |
60c5c021 | 2617 | cygallargs = allargs; |
b3c613f2 | 2618 | #endif |
dfe7f3ac CF |
2619 | } |
2620 | else | |
2621 | { | |
974e6844 | 2622 | sh = get_shell (); |
b3c613f2 | 2623 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0) |
d0d0ab16 | 2624 | error (_("Error starting executable via shell: %d"), errno); |
b3c613f2 | 2625 | #ifdef __USEWIDE |
d0d0ab16 CV |
2626 | len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0) |
2627 | + mbstowcs (NULL, allargs, 0) + 2; | |
2628 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2629 | swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs); | |
8ba42bc5 | 2630 | #else /* !__USEWIDE */ |
08850b56 PM |
2631 | len = (sizeof (" -c 'exec '") + strlen (exec_file) |
2632 | + strlen (allargs) + 2); | |
2633 | cygallargs = (char *) alloca (len); | |
2634 | xsnprintf (cygallargs, len, " -c 'exec %s %s'", exec_file, allargs); | |
8ba42bc5 | 2635 | #endif /* __USEWIDE */ |
dfe7f3ac | 2636 | toexec = shell; |
d0d0ab16 | 2637 | flags |= DEBUG_PROCESS; |
dfe7f3ac | 2638 | } |
b3c613f2 | 2639 | |
d092c5a2 SDJ |
2640 | if (inferior_cwd != NULL |
2641 | && cygwin_conv_path (CCP_POSIX_TO_WIN_W, inferior_cwd, | |
2642 | infcwd, strlen (inferior_cwd)) < 0) | |
2643 | error (_("Error converting inferior cwd: %d"), errno); | |
2644 | ||
b3c613f2 CF |
2645 | #ifdef __USEWIDE |
2646 | args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2) | |
2647 | * sizeof (wchar_t)); | |
d0d0ab16 CV |
2648 | wcscpy (args, toexec); |
2649 | wcscat (args, L" "); | |
2650 | wcscat (args, cygallargs); | |
8ba42bc5 | 2651 | #else /* !__USEWIDE */ |
b3c613f2 CF |
2652 | args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2); |
2653 | strcpy (args, toexec); | |
2654 | strcat (args, " "); | |
2655 | strcat (args, cygallargs); | |
8ba42bc5 | 2656 | #endif /* !__USEWIDE */ |
b3c613f2 | 2657 | |
b7ff339d CV |
2658 | #ifdef CW_CVT_ENV_TO_WINENV |
2659 | /* First try to create a direct Win32 copy of the POSIX environment. */ | |
2660 | w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env); | |
2661 | if (w32_env != (PWCHAR) -1) | |
2662 | flags |= CREATE_UNICODE_ENVIRONMENT; | |
2663 | else | |
2664 | /* If that fails, fall back to old method tweaking GDB's environment. */ | |
8ba42bc5 | 2665 | #endif /* CW_CVT_ENV_TO_WINENV */ |
b7ff339d CV |
2666 | { |
2667 | /* Reset all Win32 environment variables to avoid leftover on next run. */ | |
2668 | clear_win32_environment (environ); | |
2669 | /* Prepare the environment vars for CreateProcess. */ | |
2670 | old_env = environ; | |
2671 | environ = in_env; | |
2672 | cygwin_internal (CW_SYNC_WINENV); | |
2673 | w32_env = NULL; | |
2674 | } | |
1750a5ef | 2675 | |
2becadee CF |
2676 | if (!inferior_io_terminal) |
2677 | tty = ostdin = ostdout = ostderr = -1; | |
2678 | else | |
2679 | { | |
2680 | tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY); | |
2681 | if (tty < 0) | |
2682 | { | |
2683 | print_sys_errmsg (inferior_io_terminal, errno); | |
2684 | ostdin = ostdout = ostderr = -1; | |
2685 | } | |
2686 | else | |
2687 | { | |
2688 | ostdin = dup (0); | |
2689 | ostdout = dup (1); | |
2690 | ostderr = dup (2); | |
2691 | dup2 (tty, 0); | |
2692 | dup2 (tty, 1); | |
2693 | dup2 (tty, 2); | |
2694 | } | |
2695 | } | |
d0d0ab16 CV |
2696 | |
2697 | windows_init_thread_list (); | |
b3c613f2 CF |
2698 | ret = CreateProcess (0, |
2699 | args, /* command line */ | |
2700 | NULL, /* Security */ | |
2701 | NULL, /* thread */ | |
2702 | TRUE, /* inherit handles */ | |
2703 | flags, /* start flags */ | |
b7ff339d | 2704 | w32_env, /* environment */ |
d092c5a2 SDJ |
2705 | inferior_cwd != NULL ? infcwd : NULL, /* current |
2706 | directory */ | |
b3c613f2 CF |
2707 | &si, |
2708 | &pi); | |
b7ff339d CV |
2709 | if (w32_env) |
2710 | /* Just free the Win32 environment, if it could be created. */ | |
2711 | free (w32_env); | |
2712 | else | |
2713 | { | |
2714 | /* Reset all environment variables to avoid leftover on next run. */ | |
2715 | clear_win32_environment (in_env); | |
2716 | /* Restore normal GDB environment variables. */ | |
2717 | environ = old_env; | |
2718 | cygwin_internal (CW_SYNC_WINENV); | |
2719 | } | |
2720 | ||
d0d0ab16 CV |
2721 | if (tty >= 0) |
2722 | { | |
6af79d7b | 2723 | ::close (tty); |
d0d0ab16 CV |
2724 | dup2 (ostdin, 0); |
2725 | dup2 (ostdout, 1); | |
2726 | dup2 (ostderr, 2); | |
6af79d7b JT |
2727 | ::close (ostdin); |
2728 | ::close (ostdout); | |
2729 | ::close (ostderr); | |
d0d0ab16 | 2730 | } |
8ba42bc5 EZ |
2731 | #else /* !__CYGWIN__ */ |
2732 | allargs_len = strlen (allargs); | |
2733 | allargs_copy = strcpy ((char *) alloca (allargs_len + 1), allargs); | |
2734 | if (strpbrk (allargs_copy, "<>") != NULL) | |
2735 | { | |
2736 | int e = errno; | |
2737 | errno = 0; | |
2738 | redirected = | |
2739 | redirect_inferior_handles (allargs, allargs_copy, | |
2740 | &fd_inp, &fd_out, &fd_err); | |
2741 | if (errno) | |
6d91ce9a | 2742 | warning (_("Error in redirection: %s."), safe_strerror (errno)); |
8ba42bc5 EZ |
2743 | else |
2744 | errno = e; | |
2745 | allargs_len = strlen (allargs_copy); | |
2746 | } | |
2747 | /* If not all the standard streams are redirected by the command | |
2748 | line, use inferior_io_terminal for those which aren't. */ | |
2749 | if (inferior_io_terminal | |
2750 | && !(fd_inp >= 0 && fd_out >= 0 && fd_err >= 0)) | |
41b4aadc CF |
2751 | { |
2752 | SECURITY_ATTRIBUTES sa; | |
2753 | sa.nLength = sizeof(sa); | |
2754 | sa.lpSecurityDescriptor = 0; | |
2755 | sa.bInheritHandle = TRUE; | |
2756 | tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE, | |
2757 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
2758 | if (tty == INVALID_HANDLE_VALUE) | |
2759 | warning (_("Warning: Failed to open TTY %s, error %#x."), | |
2760 | inferior_io_terminal, (unsigned) GetLastError ()); | |
8ba42bc5 EZ |
2761 | } |
2762 | if (redirected || tty != INVALID_HANDLE_VALUE) | |
2763 | { | |
2764 | if (fd_inp >= 0) | |
2765 | si.hStdInput = (HANDLE) _get_osfhandle (fd_inp); | |
2766 | else if (tty != INVALID_HANDLE_VALUE) | |
2767 | si.hStdInput = tty; | |
41b4aadc | 2768 | else |
8ba42bc5 EZ |
2769 | si.hStdInput = GetStdHandle (STD_INPUT_HANDLE); |
2770 | if (fd_out >= 0) | |
2771 | si.hStdOutput = (HANDLE) _get_osfhandle (fd_out); | |
2772 | else if (tty != INVALID_HANDLE_VALUE) | |
2773 | si.hStdOutput = tty; | |
2774 | else | |
2775 | si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
2776 | if (fd_err >= 0) | |
2777 | si.hStdError = (HANDLE) _get_osfhandle (fd_err); | |
2778 | else if (tty != INVALID_HANDLE_VALUE) | |
2779 | si.hStdError = tty; | |
2780 | else | |
2781 | si.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
2782 | si.dwFlags |= STARTF_USESTDHANDLES; | |
41b4aadc | 2783 | } |
2becadee | 2784 | |
8ba42bc5 EZ |
2785 | toexec = exec_file; |
2786 | /* Build the command line, a space-separated list of tokens where | |
2787 | the first token is the name of the module to be executed. | |
2788 | To avoid ambiguities introduced by spaces in the module name, | |
2789 | we quote it. */ | |
2790 | args_len = strlen (toexec) + 2 /* quotes */ + allargs_len + 2; | |
2791 | args = (char *) alloca (args_len); | |
2792 | xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs_copy); | |
2793 | ||
2794 | flags |= DEBUG_ONLY_THIS_PROCESS; | |
2795 | ||
c93dbcba EZ |
2796 | /* CreateProcess takes the environment list as a null terminated set of |
2797 | strings (i.e. two nulls terminate the list). */ | |
2798 | ||
2799 | /* Get total size for env strings. */ | |
2800 | for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++) | |
2801 | envlen += strlen (in_env[i]) + 1; | |
2802 | ||
2803 | envsize = sizeof (in_env[0]) * (i + 1); | |
2804 | env = (char **) alloca (envsize); | |
2805 | memcpy (env, in_env, envsize); | |
2806 | /* Windows programs expect the environment block to be sorted. */ | |
2807 | qsort (env, i, sizeof (char *), envvar_cmp); | |
2808 | ||
0ae1c716 | 2809 | w32env = (char *) alloca (envlen + 1); |
c93dbcba EZ |
2810 | |
2811 | /* Copy env strings into new buffer. */ | |
2812 | for (temp = w32env, i = 0; env[i] && *env[i]; i++) | |
2813 | { | |
2814 | strcpy (temp, env[i]); | |
2815 | temp += strlen (temp) + 1; | |
2816 | } | |
2817 | ||
2818 | /* Final nil string to terminate new env. */ | |
2819 | *temp = 0; | |
2820 | ||
dc05df57 | 2821 | windows_init_thread_list (); |
d0d0ab16 CV |
2822 | ret = CreateProcessA (0, |
2823 | args, /* command line */ | |
2824 | NULL, /* Security */ | |
2825 | NULL, /* thread */ | |
2826 | TRUE, /* inherit handles */ | |
2827 | flags, /* start flags */ | |
c93dbcba | 2828 | w32env, /* environment */ |
d092c5a2 | 2829 | inferior_cwd, /* current directory */ |
d0d0ab16 CV |
2830 | &si, |
2831 | &pi); | |
41b4aadc CF |
2832 | if (tty != INVALID_HANDLE_VALUE) |
2833 | CloseHandle (tty); | |
8ba42bc5 EZ |
2834 | if (fd_inp >= 0) |
2835 | _close (fd_inp); | |
2836 | if (fd_out >= 0) | |
2837 | _close (fd_out); | |
2838 | if (fd_err >= 0) | |
2839 | _close (fd_err); | |
2840 | #endif /* !__CYGWIN__ */ | |
2becadee | 2841 | |
24e60978 | 2842 | if (!ret) |
d50a0ce2 | 2843 | error (_("Error creating process %s, (error %u)."), |
8a3fe4f8 | 2844 | exec_file, (unsigned) GetLastError ()); |
24e60978 | 2845 | |
c1766e7d PM |
2846 | CloseHandle (pi.hThread); |
2847 | CloseHandle (pi.hProcess); | |
2848 | ||
dfe7f3ac CF |
2849 | if (useshell && shell[0] != '\0') |
2850 | saw_create = -1; | |
2851 | else | |
2852 | saw_create = 0; | |
2853 | ||
f6ac5f3d | 2854 | do_initial_windows_stuff (this, pi.dwProcessId, 0); |
d3a09475 | 2855 | |
17617f2d | 2856 | /* windows_continue (DBG_CONTINUE, -1, 0); */ |
24e60978 SC |
2857 | } |
2858 | ||
f6ac5f3d PA |
2859 | void |
2860 | windows_nat_target::mourn_inferior () | |
24e60978 | 2861 | { |
17617f2d | 2862 | (void) windows_continue (DBG_CONTINUE, -1, 0); |
df7e5265 | 2863 | x86_cleanup_dregs(); |
bf25528d CF |
2864 | if (open_process_used) |
2865 | { | |
2866 | CHECK (CloseHandle (current_process_handle)); | |
2867 | open_process_used = 0; | |
2868 | } | |
7928d571 | 2869 | siginfo_er.ExceptionCode = 0; |
f6ac5f3d | 2870 | inf_child_target::mourn_inferior (); |
24e60978 SC |
2871 | } |
2872 | ||
24e60978 | 2873 | /* Send a SIGINT to the process group. This acts just like the user typed a |
581e13c1 | 2874 | ^C on the controlling terminal. */ |
24e60978 | 2875 | |
f6ac5f3d PA |
2876 | void |
2877 | windows_nat_target::interrupt () | |
24e60978 | 2878 | { |
1ef980b9 | 2879 | DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n")); |
1e37c281 | 2880 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 2881 | registers_changed (); /* refresh register state */ |
24e60978 SC |
2882 | } |
2883 | ||
44f38867 PA |
2884 | /* Helper for windows_xfer_partial that handles memory transfers. |
2885 | Arguments are like target_xfer_partial. */ | |
2886 | ||
9b409511 | 2887 | static enum target_xfer_status |
44f38867 | 2888 | windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2889 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) |
24e60978 | 2890 | { |
5732a500 | 2891 | SIZE_T done = 0; |
44f38867 | 2892 | BOOL success; |
9e52adf9 | 2893 | DWORD lasterror = 0; |
44f38867 PA |
2894 | |
2895 | if (writebuf != NULL) | |
24e60978 | 2896 | { |
a2388568 | 2897 | DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n", |
b55e14c7 | 2898 | pulongest (len), core_addr_to_string (memaddr))); |
44f38867 PA |
2899 | success = WriteProcessMemory (current_process_handle, |
2900 | (LPVOID) (uintptr_t) memaddr, writebuf, | |
2901 | len, &done); | |
9e52adf9 | 2902 | if (!success) |
7126d5c8 | 2903 | lasterror = GetLastError (); |
2b008701 | 2904 | FlushInstructionCache (current_process_handle, |
2c647436 | 2905 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
2906 | } |
2907 | else | |
2908 | { | |
a2388568 | 2909 | DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n", |
b55e14c7 | 2910 | pulongest (len), core_addr_to_string (memaddr))); |
44f38867 PA |
2911 | success = ReadProcessMemory (current_process_handle, |
2912 | (LPCVOID) (uintptr_t) memaddr, readbuf, | |
2913 | len, &done); | |
9e52adf9 | 2914 | if (!success) |
7126d5c8 | 2915 | lasterror = GetLastError (); |
24e60978 | 2916 | } |
9b409511 | 2917 | *xfered_len = (ULONGEST) done; |
9e52adf9 | 2918 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
9b409511 | 2919 | return TARGET_XFER_OK; |
9e52adf9 | 2920 | else |
9b409511 | 2921 | return success ? TARGET_XFER_OK : TARGET_XFER_E_IO; |
24e60978 SC |
2922 | } |
2923 | ||
f6ac5f3d PA |
2924 | void |
2925 | windows_nat_target::kill () | |
24e60978 | 2926 | { |
3cee93ac CF |
2927 | CHECK (TerminateProcess (current_process_handle, 0)); |
2928 | ||
b5edcb45 ILT |
2929 | for (;;) |
2930 | { | |
17617f2d | 2931 | if (!windows_continue (DBG_CONTINUE, -1, 1)) |
b5edcb45 | 2932 | break; |
3cee93ac | 2933 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
b5edcb45 | 2934 | break; |
3cee93ac | 2935 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
2936 | break; |
2937 | } | |
2938 | ||
9eee20eb | 2939 | target_mourn_inferior (inferior_ptid); /* Or just windows_mourn_inferior? */ |
24e60978 SC |
2940 | } |
2941 | ||
f6ac5f3d PA |
2942 | void |
2943 | windows_nat_target::close () | |
24e60978 | 2944 | { |
dc05df57 | 2945 | DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n", |
e99b03dc | 2946 | inferior_ptid.pid ())); |
24e60978 | 2947 | } |
1ef980b9 | 2948 | |
581e13c1 | 2949 | /* Convert pid to printable format. */ |
a068643d | 2950 | std::string |
f6ac5f3d | 2951 | windows_nat_target::pid_to_str (ptid_t ptid) |
24e60978 | 2952 | { |
cc6bcb54 | 2953 | if (ptid.tid () != 0) |
a068643d | 2954 | return string_printf ("Thread %d.0x%lx", ptid.pid (), ptid.tid ()); |
2dc38344 PA |
2955 | |
2956 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2957 | } |
2958 | ||
9b409511 | 2959 | static enum target_xfer_status |
dc05df57 | 2960 | windows_xfer_shared_libraries (struct target_ops *ops, |
9b409511 YQ |
2961 | enum target_object object, const char *annex, |
2962 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2963 | ULONGEST offset, ULONGEST len, | |
2964 | ULONGEST *xfered_len) | |
3cb8e7f6 | 2965 | { |
de1b3c3d PA |
2966 | struct obstack obstack; |
2967 | const char *buf; | |
2968 | LONGEST len_avail; | |
3cb8e7f6 | 2969 | struct so_list *so; |
3cb8e7f6 | 2970 | |
de1b3c3d | 2971 | if (writebuf) |
2ed4b548 | 2972 | return TARGET_XFER_E_IO; |
3cb8e7f6 | 2973 | |
de1b3c3d PA |
2974 | obstack_init (&obstack); |
2975 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2976 | for (so = solib_start.next; so; so = so->next) | |
d0e449a1 SM |
2977 | { |
2978 | lm_info_windows *li = (lm_info_windows *) so->lm_info; | |
2979 | ||
2980 | windows_xfer_shared_library (so->so_name, (CORE_ADDR) | |
2981 | (uintptr_t) li->load_addr, | |
c162ed3e | 2982 | &li->text_offset, |
d0e449a1 SM |
2983 | target_gdbarch (), &obstack); |
2984 | } | |
de1b3c3d | 2985 | obstack_grow_str0 (&obstack, "</library-list>\n"); |
3cb8e7f6 | 2986 | |
0ae1c716 | 2987 | buf = (const char *) obstack_finish (&obstack); |
de1b3c3d PA |
2988 | len_avail = strlen (buf); |
2989 | if (offset >= len_avail) | |
49dc7f4b PM |
2990 | len= 0; |
2991 | else | |
2992 | { | |
2993 | if (len > len_avail - offset) | |
2994 | len = len_avail - offset; | |
2995 | memcpy (readbuf, buf + offset, len); | |
2996 | } | |
3cb8e7f6 | 2997 | |
de1b3c3d | 2998 | obstack_free (&obstack, NULL); |
9b409511 | 2999 | *xfered_len = (ULONGEST) len; |
0837c976 | 3000 | return len != 0 ? TARGET_XFER_OK : TARGET_XFER_EOF; |
3cb8e7f6 CF |
3001 | } |
3002 | ||
7928d571 HD |
3003 | /* Helper for windows_nat_target::xfer_partial that handles signal info. */ |
3004 | ||
3005 | static enum target_xfer_status | |
3006 | windows_xfer_siginfo (gdb_byte *readbuf, ULONGEST offset, ULONGEST len, | |
3007 | ULONGEST *xfered_len) | |
3008 | { | |
3009 | if (siginfo_er.ExceptionCode == 0) | |
3010 | return TARGET_XFER_E_IO; | |
3011 | ||
3012 | if (readbuf == nullptr) | |
3013 | return TARGET_XFER_E_IO; | |
3014 | ||
3015 | if (offset > sizeof (siginfo_er)) | |
3016 | return TARGET_XFER_E_IO; | |
3017 | ||
3018 | if (offset + len > sizeof (siginfo_er)) | |
3019 | len = sizeof (siginfo_er) - offset; | |
3020 | ||
3021 | memcpy (readbuf, (char *) &siginfo_er + offset, len); | |
3022 | *xfered_len = len; | |
3023 | ||
3024 | return TARGET_XFER_OK; | |
3025 | } | |
3026 | ||
f6ac5f3d PA |
3027 | enum target_xfer_status |
3028 | windows_nat_target::xfer_partial (enum target_object object, | |
3029 | const char *annex, gdb_byte *readbuf, | |
2f4f025f TT |
3030 | const gdb_byte *writebuf, ULONGEST offset, |
3031 | ULONGEST len, ULONGEST *xfered_len) | |
3cb8e7f6 | 3032 | { |
de1b3c3d | 3033 | switch (object) |
3cb8e7f6 | 3034 | { |
de1b3c3d | 3035 | case TARGET_OBJECT_MEMORY: |
9b409511 | 3036 | return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
de1b3c3d PA |
3037 | |
3038 | case TARGET_OBJECT_LIBRARIES: | |
f6ac5f3d | 3039 | return windows_xfer_shared_libraries (this, object, annex, readbuf, |
9b409511 | 3040 | writebuf, offset, len, xfered_len); |
3929abe9 | 3041 | |
7928d571 HD |
3042 | case TARGET_OBJECT_SIGNAL_INFO: |
3043 | return windows_xfer_siginfo (readbuf, offset, len, xfered_len); | |
3044 | ||
de1b3c3d | 3045 | default: |
2f4f025f | 3046 | if (beneath () == NULL) |
178d6a63 JB |
3047 | { |
3048 | /* This can happen when requesting the transfer of unsupported | |
3049 | objects before a program has been started (and therefore | |
3050 | with the current_target having no target beneath). */ | |
3051 | return TARGET_XFER_E_IO; | |
3052 | } | |
2f4f025f TT |
3053 | return beneath ()->xfer_partial (object, annex, |
3054 | readbuf, writebuf, offset, len, | |
3055 | xfered_len); | |
3929abe9 | 3056 | } |
02c5aecd CF |
3057 | } |
3058 | ||
711e434b PM |
3059 | /* Provide thread local base, i.e. Thread Information Block address. |
3060 | Returns 1 if ptid is found and sets *ADDR to thread_local_base. */ | |
3061 | ||
57810aa7 | 3062 | bool |
f6ac5f3d | 3063 | windows_nat_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 3064 | { |
876d1cd7 | 3065 | windows_thread_info *th; |
711e434b | 3066 | |
cc6bcb54 | 3067 | th = thread_rec (ptid.tid (), 0); |
711e434b | 3068 | if (th == NULL) |
57810aa7 | 3069 | return false; |
711e434b PM |
3070 | |
3071 | if (addr != NULL) | |
3072 | *addr = th->thread_local_base; | |
3073 | ||
57810aa7 | 3074 | return true; |
711e434b PM |
3075 | } |
3076 | ||
f6ac5f3d PA |
3077 | ptid_t |
3078 | windows_nat_target::get_ada_task_ptid (long lwp, long thread) | |
1e2f1c5c | 3079 | { |
e99b03dc | 3080 | return ptid_t (inferior_ptid.pid (), 0, lwp); |
1e2f1c5c JB |
3081 | } |
3082 | ||
24cdb46e РИ |
3083 | /* Implementation of the to_thread_name method. */ |
3084 | ||
f6ac5f3d PA |
3085 | const char * |
3086 | windows_nat_target::thread_name (struct thread_info *thr) | |
24cdb46e | 3087 | { |
cc6bcb54 | 3088 | return thread_rec (thr->ptid.tid (), 0)->name; |
24cdb46e РИ |
3089 | } |
3090 | ||
24e60978 | 3091 | |
6c265988 | 3092 | void _initialize_windows_nat (); |
24e60978 | 3093 | void |
6c265988 | 3094 | _initialize_windows_nat () |
24e60978 | 3095 | { |
df7e5265 GB |
3096 | x86_dr_low.set_control = cygwin_set_dr7; |
3097 | x86_dr_low.set_addr = cygwin_set_dr; | |
3098 | x86_dr_low.get_addr = cygwin_get_dr; | |
3099 | x86_dr_low.get_status = cygwin_get_dr6; | |
3100 | x86_dr_low.get_control = cygwin_get_dr7; | |
51a9c8c5 | 3101 | |
df7e5265 GB |
3102 | /* x86_dr_low.debug_register_length field is set by |
3103 | calling x86_set_debug_register_length function | |
51a9c8c5 | 3104 | in processor windows specific native file. */ |
fa58ee11 | 3105 | |
d9f719f1 | 3106 | add_inf_child_target (&the_windows_nat_target); |
1ef980b9 | 3107 | |
d0d0ab16 CV |
3108 | #ifdef __CYGWIN__ |
3109 | cygwin_internal (CW_SET_DOS_FILE_WARNING, 0); | |
3110 | #endif | |
3111 | ||
463888ab РИ |
3112 | add_com ("signal-event", class_run, signal_event_command, _("\ |
3113 | Signal a crashed process with event ID, to allow its debugging.\n\ | |
3114 | This command is needed in support of setting up GDB as JIT debugger on \ | |
3115 | MS-Windows. The command should be invoked from the GDB command line using \ | |
3116 | the '-ex' command-line option. The ID of the event that blocks the \ | |
3117 | crashed process will be supplied by the Windows JIT debugging mechanism.")); | |
3118 | ||
10325bc5 | 3119 | #ifdef __CYGWIN__ |
5bf193a2 AC |
3120 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
3121 | Set use of shell to start subprocess."), _("\ | |
3122 | Show use of shell to start subprocess."), NULL, | |
3123 | NULL, | |
3124 | NULL, /* FIXME: i18n: */ | |
3125 | &setlist, &showlist); | |
3126 | ||
581e13c1 MS |
3127 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, |
3128 | &cygwin_exceptions, _("\ | |
09280ddf CF |
3129 | Break when an exception is detected in the Cygwin DLL itself."), _("\ |
3130 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
3131 | NULL, | |
3132 | NULL, /* FIXME: i18n: */ | |
3133 | &setlist, &showlist); | |
10325bc5 | 3134 | #endif |
09280ddf | 3135 | |
5bf193a2 AC |
3136 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
3137 | Set creation of new console when creating child process."), _("\ | |
3138 | Show creation of new console when creating child process."), NULL, | |
3139 | NULL, | |
3140 | NULL, /* FIXME: i18n: */ | |
3141 | &setlist, &showlist); | |
3142 | ||
3143 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
3144 | Set creation of new group when creating child process."), _("\ | |
3145 | Show creation of new group when creating child process."), NULL, | |
3146 | NULL, | |
3147 | NULL, /* FIXME: i18n: */ | |
3148 | &setlist, &showlist); | |
3149 | ||
3150 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
3151 | Set whether to display execution in child process."), _("\ | |
3152 | Show whether to display execution in child process."), NULL, | |
3153 | NULL, | |
3154 | NULL, /* FIXME: i18n: */ | |
3155 | &setlist, &showlist); | |
3156 | ||
3157 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
3158 | Set whether to display kernel events in child process."), _("\ | |
3159 | Show whether to display kernel events in child process."), NULL, | |
3160 | NULL, | |
3161 | NULL, /* FIXME: i18n: */ | |
3162 | &setlist, &showlist); | |
3163 | ||
3164 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
3165 | Set whether to display memory accesses in child process."), _("\ | |
3166 | Show whether to display memory accesses in child process."), NULL, | |
3167 | NULL, | |
3168 | NULL, /* FIXME: i18n: */ | |
3169 | &setlist, &showlist); | |
3170 | ||
3171 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
3172 | &debug_exceptions, _("\ | |
3173 | Set whether to display kernel exceptions in child process."), _("\ | |
3174 | Show whether to display kernel exceptions in child process."), NULL, | |
3175 | NULL, | |
3176 | NULL, /* FIXME: i18n: */ | |
3177 | &setlist, &showlist); | |
1ef980b9 | 3178 | |
711e434b | 3179 | init_w32_command_list (); |
c1748f97 PM |
3180 | |
3181 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 3182 | _("Display selectors infos."), |
c1748f97 | 3183 | &info_w32_cmdlist); |
24e60978 | 3184 | } |
3cee93ac | 3185 | |
fa4ba8da PM |
3186 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
3187 | ||
3188 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
3189 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 3190 | actually set up when windows_continue is called. */ |
9bb9e8ad | 3191 | static void |
fa4ba8da PM |
3192 | cygwin_set_dr (int i, CORE_ADDR addr) |
3193 | { | |
3194 | if (i < 0 || i > 3) | |
3195 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3196 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
41b4aadc | 3197 | dr[i] = addr; |
fa4ba8da PM |
3198 | debug_registers_changed = 1; |
3199 | debug_registers_used = 1; | |
3200 | } | |
3201 | ||
3202 | /* Pass the value VAL to the inferior in the DR7 debug control | |
3203 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 3204 | will be actually set up in windows_wait. */ |
9bb9e8ad PM |
3205 | static void |
3206 | cygwin_set_dr7 (unsigned long val) | |
fa4ba8da | 3207 | { |
9bb9e8ad | 3208 | dr[7] = (CORE_ADDR) val; |
fa4ba8da PM |
3209 | debug_registers_changed = 1; |
3210 | debug_registers_used = 1; | |
3211 | } | |
3212 | ||
7b50312a PA |
3213 | /* Get the value of debug register I from the inferior. */ |
3214 | ||
3215 | static CORE_ADDR | |
3216 | cygwin_get_dr (int i) | |
3217 | { | |
3218 | return dr[i]; | |
3219 | } | |
3220 | ||
fa4ba8da PM |
3221 | /* Get the value of the DR6 debug status register from the inferior. |
3222 | Here we just return the value stored in dr[6] | |
3223 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
9bb9e8ad | 3224 | static unsigned long |
fa4ba8da PM |
3225 | cygwin_get_dr6 (void) |
3226 | { | |
9bb9e8ad | 3227 | return (unsigned long) dr[6]; |
fa4ba8da PM |
3228 | } |
3229 | ||
7b50312a PA |
3230 | /* Get the value of the DR7 debug status register from the inferior. |
3231 | Here we just return the value stored in dr[7] by the last call to | |
3232 | thread_rec for current_event.dwThreadId id. */ | |
3233 | ||
3234 | static unsigned long | |
3235 | cygwin_get_dr7 (void) | |
3236 | { | |
3237 | return (unsigned long) dr[7]; | |
3238 | } | |
3239 | ||
2dc38344 | 3240 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 3241 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
581e13c1 | 3242 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
f6ac5f3d | 3243 | |
57810aa7 | 3244 | bool |
f6ac5f3d | 3245 | windows_nat_target::thread_alive (ptid_t ptid) |
3cee93ac | 3246 | { |
2dc38344 PA |
3247 | int tid; |
3248 | ||
cc6bcb54 TT |
3249 | gdb_assert (ptid.tid () != 0); |
3250 | tid = ptid.tid (); | |
39f77062 | 3251 | |
57810aa7 | 3252 | return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) != WAIT_OBJECT_0; |
3cee93ac CF |
3253 | } |
3254 | ||
6c265988 | 3255 | void _initialize_check_for_gdb_ini (); |
2a3d5645 | 3256 | void |
6c265988 | 3257 | _initialize_check_for_gdb_ini () |
2a3d5645 CF |
3258 | { |
3259 | char *homedir; | |
3260 | if (inhibit_gdbinit) | |
3261 | return; | |
3262 | ||
3263 | homedir = getenv ("HOME"); | |
3264 | if (homedir) | |
3265 | { | |
3266 | char *p; | |
3267 | char *oldini = (char *) alloca (strlen (homedir) + | |
1270fac6 | 3268 | sizeof ("gdb.ini") + 1); |
2a3d5645 CF |
3269 | strcpy (oldini, homedir); |
3270 | p = strchr (oldini, '\0'); | |
0ba1096a | 3271 | if (p > oldini && !IS_DIR_SEPARATOR (p[-1])) |
2a3d5645 CF |
3272 | *p++ = '/'; |
3273 | strcpy (p, "gdb.ini"); | |
3274 | if (access (oldini, 0) == 0) | |
3275 | { | |
3276 | int len = strlen (oldini); | |
1270fac6 | 3277 | char *newini = (char *) alloca (len + 2); |
08850b56 | 3278 | |
1270fac6 | 3279 | xsnprintf (newini, len + 2, "%.*s.gdbinit", |
08850b56 | 3280 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 3281 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
3282 | } |
3283 | } | |
3284 | } | |
33605d39 | 3285 | |
2b008701 | 3286 | /* Define dummy functions which always return error for the rare cases where |
581e13c1 | 3287 | these functions could not be found. */ |
2b008701 CF |
3288 | static BOOL WINAPI |
3289 | bad_DebugActiveProcessStop (DWORD w) | |
3290 | { | |
3291 | return FALSE; | |
3292 | } | |
3293 | static BOOL WINAPI | |
3294 | bad_DebugBreakProcess (HANDLE w) | |
3295 | { | |
3296 | return FALSE; | |
3297 | } | |
3298 | static BOOL WINAPI | |
3299 | bad_DebugSetProcessKillOnExit (BOOL w) | |
3300 | { | |
3301 | return FALSE; | |
3302 | } | |
3303 | static BOOL WINAPI | |
3304 | bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z) | |
3305 | { | |
3306 | return FALSE; | |
3307 | } | |
b3c613f2 CF |
3308 | |
3309 | #ifdef __USEWIDE | |
2b008701 | 3310 | static DWORD WINAPI |
b3c613f2 | 3311 | bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z) |
2b008701 CF |
3312 | { |
3313 | return 0; | |
3314 | } | |
d0d0ab16 CV |
3315 | #else |
3316 | static DWORD WINAPI | |
b3c613f2 | 3317 | bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z) |
d0d0ab16 CV |
3318 | { |
3319 | return 0; | |
3320 | } | |
3321 | #endif | |
b3c613f2 | 3322 | |
2b008701 CF |
3323 | static BOOL WINAPI |
3324 | bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z) | |
3325 | { | |
3326 | return FALSE; | |
3327 | } | |
3328 | ||
418c6cb3 CF |
3329 | static BOOL WINAPI |
3330 | bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y) | |
3331 | { | |
3332 | return FALSE; | |
3333 | } | |
3334 | ||
cd44747c PM |
3335 | static BOOL WINAPI |
3336 | bad_GetCurrentConsoleFont (HANDLE w, BOOL bMaxWindow, CONSOLE_FONT_INFO *f) | |
3337 | { | |
3338 | f->nFont = 0; | |
3339 | return 1; | |
3340 | } | |
3341 | static COORD WINAPI | |
3342 | bad_GetConsoleFontSize (HANDLE w, DWORD nFont) | |
3343 | { | |
3344 | COORD size; | |
3345 | size.X = 8; | |
3346 | size.Y = 12; | |
3347 | return size; | |
3348 | } | |
3349 | ||
2b008701 | 3350 | /* Load any functions which may not be available in ancient versions |
581e13c1 | 3351 | of Windows. */ |
d603d4b3 | 3352 | |
6c265988 | 3353 | void _initialize_loadable (); |
33605d39 | 3354 | void |
6c265988 | 3355 | _initialize_loadable () |
33605d39 | 3356 | { |
2b008701 CF |
3357 | HMODULE hm = NULL; |
3358 | ||
43499ea3 PA |
3359 | #define GPA(m, func) \ |
3360 | func = (func ## _ftype *) GetProcAddress (m, #func) | |
3361 | ||
2b008701 CF |
3362 | hm = LoadLibrary ("kernel32.dll"); |
3363 | if (hm) | |
33605d39 | 3364 | { |
43499ea3 PA |
3365 | GPA (hm, DebugActiveProcessStop); |
3366 | GPA (hm, DebugBreakProcess); | |
3367 | GPA (hm, DebugSetProcessKillOnExit); | |
3368 | GPA (hm, GetConsoleFontSize); | |
3369 | GPA (hm, DebugActiveProcessStop); | |
3370 | GPA (hm, GetCurrentConsoleFont); | |
2b008701 | 3371 | } |
33605d39 | 3372 | |
2b008701 | 3373 | /* Set variables to dummy versions of these processes if the function |
581e13c1 | 3374 | wasn't found in kernel32.dll. */ |
b3c613f2 CF |
3375 | if (!DebugBreakProcess) |
3376 | DebugBreakProcess = bad_DebugBreakProcess; | |
3377 | if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit) | |
2b008701 | 3378 | { |
b3c613f2 CF |
3379 | DebugActiveProcessStop = bad_DebugActiveProcessStop; |
3380 | DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit; | |
2b008701 | 3381 | } |
cd44747c PM |
3382 | if (!GetConsoleFontSize) |
3383 | GetConsoleFontSize = bad_GetConsoleFontSize; | |
3384 | if (!GetCurrentConsoleFont) | |
3385 | GetCurrentConsoleFont = bad_GetCurrentConsoleFont; | |
33605d39 | 3386 | |
2b008701 | 3387 | /* Load optional functions used for retrieving filename information |
581e13c1 | 3388 | associated with the currently debugged process or its dlls. */ |
2b008701 CF |
3389 | hm = LoadLibrary ("psapi.dll"); |
3390 | if (hm) | |
3391 | { | |
43499ea3 PA |
3392 | GPA (hm, EnumProcessModules); |
3393 | GPA (hm, GetModuleInformation); | |
aec47d1d JB |
3394 | GetModuleFileNameEx = (GetModuleFileNameEx_ftype *) |
3395 | GetProcAddress (hm, GetModuleFileNameEx_name); | |
33605d39 CF |
3396 | } |
3397 | ||
b3c613f2 | 3398 | if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx) |
2b008701 CF |
3399 | { |
3400 | /* Set variables to dummy versions of these processes if the function | |
581e13c1 | 3401 | wasn't found in psapi.dll. */ |
b3c613f2 CF |
3402 | EnumProcessModules = bad_EnumProcessModules; |
3403 | GetModuleInformation = bad_GetModuleInformation; | |
3404 | GetModuleFileNameEx = bad_GetModuleFileNameEx; | |
581e13c1 MS |
3405 | /* This will probably fail on Windows 9x/Me. Let the user know |
3406 | that we're missing some functionality. */ | |
3407 | warning(_("\ | |
3408 | cannot automatically find executable file or library to read symbols.\n\ | |
3409 | Use \"file\" or \"dll\" command to load executable/libraries directly.")); | |
418c6cb3 CF |
3410 | } |
3411 | ||
3412 | hm = LoadLibrary ("advapi32.dll"); | |
3413 | if (hm) | |
3414 | { | |
43499ea3 PA |
3415 | GPA (hm, OpenProcessToken); |
3416 | GPA (hm, LookupPrivilegeValueA); | |
3417 | GPA (hm, AdjustTokenPrivileges); | |
418c6cb3 | 3418 | /* Only need to set one of these since if OpenProcessToken fails nothing |
581e13c1 MS |
3419 | else is needed. */ |
3420 | if (!OpenProcessToken || !LookupPrivilegeValueA | |
3421 | || !AdjustTokenPrivileges) | |
b3c613f2 | 3422 | OpenProcessToken = bad_OpenProcessToken; |
2b008701 | 3423 | } |
43499ea3 PA |
3424 | |
3425 | #undef GPA | |
33605d39 | 3426 | } |