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dc05df57 | 1 | /* Target-vector operations for controlling windows child processes, for GDB. |
0a65a603 | 2 | |
3666a048 | 3 | Copyright (C) 1995-2021 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> | |
10325bc5 | 39 | #ifdef __CYGWIN__ |
b7ff339d | 40 | #include <wchar.h> |
403d9909 | 41 | #include <sys/cygwin.h> |
b7ff339d | 42 | #include <cygwin/version.h> |
10325bc5 | 43 | #endif |
a1b85d28 | 44 | #include <algorithm> |
93366324 | 45 | #include <vector> |
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" |
ae1f8880 | 72 | #include "nat/windows-nat.h" |
0363df3d | 73 | #include "gdbsupport/symbol.h" |
de1b3c3d | 74 | |
4834dad0 TT |
75 | using namespace windows_nat; |
76 | ||
b3c613f2 CF |
77 | #undef STARTUPINFO |
78 | #undef CreateProcess | |
79 | #undef GetModuleFileNameEx | |
80 | ||
81 | #ifndef __CYGWIN__ | |
82 | # define __PMAX (MAX_PATH + 1) | |
9e439f00 | 83 | # define GetModuleFileNameEx GetModuleFileNameExA |
b3c613f2 CF |
84 | # define STARTUPINFO STARTUPINFOA |
85 | # define CreateProcess CreateProcessA | |
b3c613f2 CF |
86 | #else |
87 | # define __PMAX PATH_MAX | |
581e13c1 | 88 | /* The starting and ending address of the cygwin1.dll text segment. */ |
b3c613f2 CF |
89 | static CORE_ADDR cygwin_load_start; |
90 | static CORE_ADDR cygwin_load_end; | |
b3c613f2 CF |
91 | # define __USEWIDE |
92 | typedef wchar_t cygwin_buf_t; | |
9e439f00 | 93 | # define GetModuleFileNameEx GetModuleFileNameExW |
b3c613f2 CF |
94 | # define STARTUPINFO STARTUPINFOW |
95 | # define CreateProcess CreateProcessW | |
10325bc5 | 96 | #endif |
a244bdca | 97 | |
581e13c1 MS |
98 | static int have_saved_context; /* True if we've saved context from a |
99 | cygwin signal. */ | |
15766370 | 100 | #ifdef __CYGWIN__ |
85102364 | 101 | static CONTEXT saved_context; /* Contains the saved context from a |
581e13c1 | 102 | cygwin signal. */ |
15766370 | 103 | #endif |
a244bdca | 104 | |
0714f9bf SS |
105 | /* If we're not using the old Cygwin header file set, define the |
106 | following which never should have been in the generic Win32 API | |
581e13c1 | 107 | headers in the first place since they were our own invention... */ |
0714f9bf | 108 | #ifndef _GNU_H_WINDOWS_H |
9d3789f7 | 109 | enum |
8e860359 CF |
110 | { |
111 | FLAG_TRACE_BIT = 0x100, | |
8e860359 | 112 | }; |
0714f9bf SS |
113 | #endif |
114 | ||
5851ab76 JB |
115 | #ifndef CONTEXT_EXTENDED_REGISTERS |
116 | /* This macro is only defined on ia32. It only makes sense on this target, | |
117 | so define it as zero if not already defined. */ | |
118 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
119 | #endif | |
120 | ||
f0666312 | 121 | #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \ |
dda83cd7 SM |
122 | | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \ |
123 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 124 | |
41b4aadc | 125 | static uintptr_t dr[8]; |
87a45c96 CF |
126 | static int debug_registers_changed; |
127 | static int debug_registers_used; | |
16d905e2 CF |
128 | |
129 | static int windows_initialization_done; | |
6537bb24 | 130 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 131 | |
3cee93ac | 132 | /* The string sent by cygwin when it processes a signal. |
581e13c1 | 133 | FIXME: This should be in a cygwin include file. */ |
3929abe9 CF |
134 | #ifndef _CYGWIN_SIGNAL_STRING |
135 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
136 | #endif | |
3cee93ac | 137 | |
29fe111d | 138 | #define CHECK(x) check (x, __FILE__,__LINE__) |
4ef367bf TT |
139 | #define DEBUG_EXEC(fmt, ...) \ |
140 | debug_prefixed_printf_cond (debug_exec, "windows exec", fmt, ## __VA_ARGS__) | |
141 | #define DEBUG_EVENTS(fmt, ...) \ | |
142 | debug_prefixed_printf_cond (debug_events, "windows events", fmt, \ | |
143 | ## __VA_ARGS__) | |
144 | #define DEBUG_MEM(fmt, ...) \ | |
145 | debug_prefixed_printf_cond (debug_memory, "windows mem", fmt, \ | |
146 | ## __VA_ARGS__) | |
147 | #define DEBUG_EXCEPT(fmt, ...) \ | |
148 | debug_prefixed_printf_cond (debug_exceptions, "windows except", fmt, \ | |
149 | ## __VA_ARGS__) | |
24e60978 | 150 | |
9bb9e8ad PM |
151 | static void cygwin_set_dr (int i, CORE_ADDR addr); |
152 | static void cygwin_set_dr7 (unsigned long val); | |
a961bc18 | 153 | static CORE_ADDR cygwin_get_dr (int i); |
9bb9e8ad | 154 | static unsigned long cygwin_get_dr6 (void); |
a961bc18 | 155 | static unsigned long cygwin_get_dr7 (void); |
9bb9e8ad | 156 | |
93366324 | 157 | static std::vector<windows_thread_info *> thread_list; |
24e60978 | 158 | |
581e13c1 | 159 | /* Counts of things. */ |
dfe7f3ac | 160 | static int saw_create; |
bf25528d | 161 | static int open_process_used = 0; |
46f9f931 | 162 | #ifdef __x86_64__ |
0363df3d | 163 | static void *wow64_dbgbreak; |
46f9f931 | 164 | #endif |
24e60978 | 165 | |
581e13c1 | 166 | /* User options. */ |
491144b5 | 167 | static bool new_console = false; |
10325bc5 | 168 | #ifdef __CYGWIN__ |
491144b5 | 169 | static bool cygwin_exceptions = false; |
10325bc5 | 170 | #endif |
491144b5 CB |
171 | static bool new_group = true; |
172 | static bool debug_exec = false; /* show execution */ | |
173 | static bool debug_events = false; /* show events from kernel */ | |
174 | static bool debug_memory = false; /* show target memory accesses */ | |
175 | static bool debug_exceptions = false; /* show target exceptions */ | |
176 | static bool useshell = false; /* use shell for subprocesses */ | |
dfe7f3ac | 177 | |
7e63b4e4 | 178 | /* This vector maps GDB's idea of a register's number into an offset |
dc05df57 | 179 | in the windows exception context vector. |
24e60978 | 180 | |
3cee93ac | 181 | It also contains the bit mask needed to load the register in question. |
24e60978 | 182 | |
7e63b4e4 JB |
183 | The contents of this table can only be computed by the units |
184 | that provide CPU-specific support for Windows native debugging. | |
185 | These units should set the table by calling | |
dc05df57 | 186 | windows_set_context_register_offsets. |
7e63b4e4 | 187 | |
24e60978 SC |
188 | One day we could read a reg, we could inspect the context we |
189 | already have loaded, if it doesn't have the bit set that we need, | |
190 | we read that set of registers in using GetThreadContext. If the | |
581e13c1 | 191 | context already contains what we need, we just unpack it. Then to |
24e60978 SC |
192 | write a register, first we have to ensure that the context contains |
193 | the other regs of the group, and then we copy the info in and set | |
581e13c1 | 194 | out bit. */ |
24e60978 | 195 | |
7e63b4e4 | 196 | static const int *mappings; |
d3a09475 | 197 | |
d40dc7a8 JB |
198 | /* The function to use in order to determine whether a register is |
199 | a segment register or not. */ | |
200 | static segment_register_p_ftype *segment_register_p; | |
201 | ||
73c13fe6 TT |
202 | /* See windows_nat_target::resume to understand why this is commented |
203 | out. */ | |
204 | #if 0 | |
24e60978 | 205 | /* This vector maps the target's idea of an exception (extracted |
581e13c1 | 206 | from the DEBUG_EVENT structure) to GDB's idea. */ |
24e60978 SC |
207 | |
208 | struct xlate_exception | |
209 | { | |
73c13fe6 | 210 | DWORD them; |
2ea28649 | 211 | enum gdb_signal us; |
24e60978 SC |
212 | }; |
213 | ||
73c13fe6 | 214 | static const struct xlate_exception xlate[] = |
24e60978 | 215 | { |
a493e3e2 PA |
216 | {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV}, |
217 | {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV}, | |
218 | {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP}, | |
219 | {DBG_CONTROL_C, GDB_SIGNAL_INT}, | |
220 | {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP}, | |
73c13fe6 TT |
221 | {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE} |
222 | }; | |
24e60978 | 223 | |
73c13fe6 | 224 | #endif /* 0 */ |
f6ac5f3d PA |
225 | |
226 | struct windows_nat_target final : public x86_nat_target<inf_child_target> | |
227 | { | |
228 | void close () override; | |
229 | ||
230 | void attach (const char *, int) override; | |
231 | ||
232 | bool attach_no_wait () override | |
233 | { return true; } | |
234 | ||
235 | void detach (inferior *, int) override; | |
236 | ||
237 | void resume (ptid_t, int , enum gdb_signal) override; | |
238 | ||
b60cea74 | 239 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
240 | |
241 | void fetch_registers (struct regcache *, int) override; | |
242 | void store_registers (struct regcache *, int) override; | |
243 | ||
0a4afda3 TT |
244 | bool stopped_by_sw_breakpoint () override |
245 | { | |
50838d1b PA |
246 | windows_thread_info *th |
247 | = thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT); | |
248 | return th->stopped_at_software_breakpoint; | |
0a4afda3 TT |
249 | } |
250 | ||
251 | bool supports_stopped_by_sw_breakpoint () override | |
252 | { | |
253 | return true; | |
254 | } | |
255 | ||
f6ac5f3d PA |
256 | enum target_xfer_status xfer_partial (enum target_object object, |
257 | const char *annex, | |
258 | gdb_byte *readbuf, | |
259 | const gdb_byte *writebuf, | |
260 | ULONGEST offset, ULONGEST len, | |
261 | ULONGEST *xfered_len) override; | |
262 | ||
263 | void files_info () override; | |
264 | ||
265 | void kill () override; | |
266 | ||
267 | void create_inferior (const char *, const std::string &, | |
268 | char **, int) override; | |
269 | ||
270 | void mourn_inferior () override; | |
271 | ||
57810aa7 | 272 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d | 273 | |
a068643d | 274 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
275 | |
276 | void interrupt () override; | |
277 | ||
278 | char *pid_to_exec_file (int pid) override; | |
279 | ||
280 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
281 | ||
57810aa7 | 282 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
283 | |
284 | const char *thread_name (struct thread_info *) override; | |
5b6d1e4f PA |
285 | |
286 | int get_windows_debug_event (int pid, struct target_waitstatus *ourstatus); | |
50838d1b PA |
287 | |
288 | void do_initial_windows_stuff (DWORD pid, bool attaching); | |
f6ac5f3d PA |
289 | }; |
290 | ||
291 | static windows_nat_target the_windows_nat_target; | |
292 | ||
7e63b4e4 JB |
293 | /* Set the MAPPINGS static global to OFFSETS. |
294 | See the description of MAPPINGS for more details. */ | |
295 | ||
46f9f931 | 296 | static void |
dc05df57 | 297 | windows_set_context_register_offsets (const int *offsets) |
7e63b4e4 JB |
298 | { |
299 | mappings = offsets; | |
300 | } | |
301 | ||
46f9f931 HD |
302 | /* Set the function that should be used by this module to determine |
303 | whether a given register is a segment register or not. */ | |
d40dc7a8 | 304 | |
46f9f931 | 305 | static void |
d40dc7a8 JB |
306 | windows_set_segment_register_p (segment_register_p_ftype *fun) |
307 | { | |
308 | segment_register_p = fun; | |
309 | } | |
310 | ||
fa4ba8da PM |
311 | static void |
312 | check (BOOL ok, const char *file, int line) | |
313 | { | |
314 | if (!ok) | |
d50a0ce2 CV |
315 | printf_filtered ("error return %s:%d was %u\n", file, line, |
316 | (unsigned) GetLastError ()); | |
fa4ba8da PM |
317 | } |
318 | ||
28688adf | 319 | /* See nat/windows-nat.h. */ |
8e61ebec | 320 | |
28688adf TT |
321 | windows_thread_info * |
322 | windows_nat::thread_rec (ptid_t ptid, thread_disposition_type disposition) | |
24e60978 | 323 | { |
93366324 | 324 | for (windows_thread_info *th : thread_list) |
28688adf | 325 | if (th->tid == ptid.lwp ()) |
3cee93ac | 326 | { |
8e61ebec | 327 | if (!th->suspended) |
3cee93ac | 328 | { |
8e61ebec TT |
329 | switch (disposition) |
330 | { | |
331 | case DONT_INVALIDATE_CONTEXT: | |
332 | /* Nothing. */ | |
333 | break; | |
334 | case INVALIDATE_CONTEXT: | |
28688adf | 335 | if (ptid.lwp () != current_event.dwThreadId) |
8e61ebec TT |
336 | th->suspend (); |
337 | th->reload_context = true; | |
338 | break; | |
339 | case DONT_SUSPEND: | |
340 | th->reload_context = true; | |
341 | th->suspended = -1; | |
342 | break; | |
343 | } | |
3cee93ac CF |
344 | } |
345 | return th; | |
346 | } | |
347 | ||
348 | return NULL; | |
349 | } | |
350 | ||
c559d709 JB |
351 | /* Add a thread to the thread list. |
352 | ||
353 | PTID is the ptid of the thread to be added. | |
354 | H is its Windows handle. | |
355 | TLB is its thread local base. | |
356 | MAIN_THREAD_P should be true if the thread to be added is | |
357 | the main thread, false otherwise. */ | |
358 | ||
876d1cd7 | 359 | static windows_thread_info * |
c559d709 | 360 | windows_add_thread (ptid_t ptid, HANDLE h, void *tlb, bool main_thread_p) |
3cee93ac | 361 | { |
876d1cd7 | 362 | windows_thread_info *th; |
2dc38344 | 363 | |
7c7411bc | 364 | gdb_assert (ptid.lwp () != 0); |
2dc38344 | 365 | |
28688adf | 366 | if ((th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT))) |
3cee93ac CF |
367 | return th; |
368 | ||
e9534bd2 | 369 | CORE_ADDR base = (CORE_ADDR) (uintptr_t) tlb; |
46f9f931 HD |
370 | #ifdef __x86_64__ |
371 | /* For WOW64 processes, this is actually the pointer to the 64bit TIB, | |
372 | and the 32bit TIB is exactly 2 pages after it. */ | |
373 | if (wow64_process) | |
e9534bd2 | 374 | base += 0x2000; |
46f9f931 | 375 | #endif |
28688adf | 376 | th = new windows_thread_info (ptid.lwp (), h, base); |
93366324 | 377 | thread_list.push_back (th); |
c559d709 JB |
378 | |
379 | /* Add this new thread to the list of threads. | |
380 | ||
381 | To be consistent with what's done on other platforms, we add | |
382 | the main thread silently (in reality, this thread is really | |
383 | more of a process to the user than a thread). */ | |
384 | if (main_thread_p) | |
5b6d1e4f | 385 | add_thread_silent (&the_windows_nat_target, ptid); |
c559d709 | 386 | else |
5b6d1e4f | 387 | add_thread (&the_windows_nat_target, ptid); |
c559d709 | 388 | |
2dc38344 | 389 | /* Set the debug registers for the new thread if they are used. */ |
fa4ba8da PM |
390 | if (debug_registers_used) |
391 | { | |
46f9f931 HD |
392 | #ifdef __x86_64__ |
393 | if (wow64_process) | |
394 | { | |
395 | /* Only change the value of the debug registers. */ | |
396 | th->wow64_context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
397 | CHECK (Wow64GetThreadContext (th->h, &th->wow64_context)); | |
398 | th->wow64_context.Dr0 = dr[0]; | |
399 | th->wow64_context.Dr1 = dr[1]; | |
400 | th->wow64_context.Dr2 = dr[2]; | |
401 | th->wow64_context.Dr3 = dr[3]; | |
402 | th->wow64_context.Dr6 = DR6_CLEAR_VALUE; | |
403 | th->wow64_context.Dr7 = dr[7]; | |
404 | CHECK (Wow64SetThreadContext (th->h, &th->wow64_context)); | |
405 | th->wow64_context.ContextFlags = 0; | |
406 | } | |
407 | else | |
408 | #endif | |
409 | { | |
410 | /* Only change the value of the debug registers. */ | |
411 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
412 | CHECK (GetThreadContext (th->h, &th->context)); | |
413 | th->context.Dr0 = dr[0]; | |
414 | th->context.Dr1 = dr[1]; | |
415 | th->context.Dr2 = dr[2]; | |
416 | th->context.Dr3 = dr[3]; | |
417 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
418 | th->context.Dr7 = dr[7]; | |
419 | CHECK (SetThreadContext (th->h, &th->context)); | |
420 | th->context.ContextFlags = 0; | |
421 | } | |
fa4ba8da | 422 | } |
3cee93ac | 423 | return th; |
24e60978 SC |
424 | } |
425 | ||
26c4b26f | 426 | /* Clear out any old thread list and reinitialize it to a |
581e13c1 | 427 | pristine state. */ |
24e60978 | 428 | static void |
dc05df57 | 429 | windows_init_thread_list (void) |
24e60978 | 430 | { |
383228bc | 431 | DEBUG_EVENTS ("called"); |
3cee93ac | 432 | init_thread_list (); |
93366324 TT |
433 | |
434 | for (windows_thread_info *here : thread_list) | |
e9534bd2 | 435 | delete here; |
93366324 TT |
436 | |
437 | thread_list.clear (); | |
3cee93ac CF |
438 | } |
439 | ||
c559d709 JB |
440 | /* Delete a thread from the list of threads. |
441 | ||
442 | PTID is the ptid of the thread to be deleted. | |
443 | EXIT_CODE is the thread's exit code. | |
444 | MAIN_THREAD_P should be true if the thread to be deleted is | |
445 | the main thread, false otherwise. */ | |
446 | ||
3cee93ac | 447 | static void |
c559d709 | 448 | windows_delete_thread (ptid_t ptid, DWORD exit_code, bool main_thread_p) |
3cee93ac | 449 | { |
2dc38344 PA |
450 | DWORD id; |
451 | ||
7c7411bc | 452 | gdb_assert (ptid.lwp () != 0); |
2dc38344 | 453 | |
7c7411bc | 454 | id = ptid.lwp (); |
3cee93ac | 455 | |
c559d709 JB |
456 | /* Emit a notification about the thread being deleted. |
457 | ||
458 | Note that no notification was printed when the main thread | |
459 | was created, and thus, unless in verbose mode, we should be | |
85102364 | 460 | symmetrical, and avoid that notification for the main thread |
c559d709 JB |
461 | here as well. */ |
462 | ||
3cee93ac | 463 | if (info_verbose) |
a068643d | 464 | printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ()); |
c559d709 | 465 | else if (print_thread_events && !main_thread_p) |
e0ea48a0 | 466 | printf_unfiltered (_("[%s exited with code %u]\n"), |
a068643d TT |
467 | target_pid_to_str (ptid).c_str (), |
468 | (unsigned) exit_code); | |
c559d709 | 469 | |
5b6d1e4f | 470 | delete_thread (find_thread_ptid (&the_windows_nat_target, ptid)); |
3cee93ac | 471 | |
93366324 TT |
472 | auto iter = std::find_if (thread_list.begin (), thread_list.end (), |
473 | [=] (windows_thread_info *th) | |
474 | { | |
55a1e039 | 475 | return th->tid == id; |
93366324 | 476 | }); |
3cee93ac | 477 | |
93366324 | 478 | if (iter != thread_list.end ()) |
24e60978 | 479 | { |
e9534bd2 | 480 | delete *iter; |
93366324 | 481 | thread_list.erase (iter); |
24e60978 SC |
482 | } |
483 | } | |
484 | ||
9a325b7b JB |
485 | /* Fetches register number R from the given windows_thread_info, |
486 | and supplies its value to the given regcache. | |
487 | ||
488 | This function assumes that R is non-negative. A failed assertion | |
489 | is raised if that is not true. | |
490 | ||
491 | This function assumes that TH->RELOAD_CONTEXT is not set, meaning | |
492 | that the windows_thread_info has an up-to-date context. A failed | |
493 | assertion is raised if that assumption is violated. */ | |
494 | ||
3cee93ac | 495 | static void |
9a325b7b JB |
496 | windows_fetch_one_register (struct regcache *regcache, |
497 | windows_thread_info *th, int r) | |
24e60978 | 498 | { |
9a325b7b JB |
499 | gdb_assert (r >= 0); |
500 | gdb_assert (!th->reload_context); | |
501 | ||
46f9f931 HD |
502 | char *context_ptr = (char *) &th->context; |
503 | #ifdef __x86_64__ | |
504 | if (wow64_process) | |
505 | context_ptr = (char *) &th->wow64_context; | |
506 | #endif | |
507 | ||
508 | char *context_offset = context_ptr + mappings[r]; | |
ac7936df | 509 | struct gdbarch *gdbarch = regcache->arch (); |
20a6ec49 | 510 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
9a325b7b | 511 | |
0a4afda3 TT |
512 | gdb_assert (!gdbarch_read_pc_p (gdbarch)); |
513 | gdb_assert (gdbarch_pc_regnum (gdbarch) >= 0); | |
514 | gdb_assert (!gdbarch_write_pc_p (gdbarch)); | |
515 | ||
9a325b7b JB |
516 | if (r == I387_FISEG_REGNUM (tdep)) |
517 | { | |
518 | long l = *((long *) context_offset) & 0xffff; | |
519 | regcache->raw_supply (r, (char *) &l); | |
520 | } | |
521 | else if (r == I387_FOP_REGNUM (tdep)) | |
522 | { | |
523 | long l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); | |
524 | regcache->raw_supply (r, (char *) &l); | |
525 | } | |
526 | else if (segment_register_p (r)) | |
527 | { | |
528 | /* GDB treats segment registers as 32bit registers, but they are | |
529 | in fact only 16 bits long. Make sure we do not read extra | |
530 | bits from our source buffer. */ | |
531 | long l = *((long *) context_offset) & 0xffff; | |
532 | regcache->raw_supply (r, (char *) &l); | |
533 | } | |
534 | else | |
0a4afda3 TT |
535 | { |
536 | if (th->stopped_at_software_breakpoint | |
7be2bb4f | 537 | && !th->pc_adjusted |
0a4afda3 TT |
538 | && r == gdbarch_pc_regnum (gdbarch)) |
539 | { | |
540 | int size = register_size (gdbarch, r); | |
541 | if (size == 4) | |
542 | { | |
543 | uint32_t value; | |
544 | memcpy (&value, context_offset, size); | |
545 | value -= gdbarch_decr_pc_after_break (gdbarch); | |
546 | memcpy (context_offset, &value, size); | |
547 | } | |
548 | else | |
549 | { | |
550 | gdb_assert (size == 8); | |
551 | uint64_t value; | |
552 | memcpy (&value, context_offset, size); | |
553 | value -= gdbarch_decr_pc_after_break (gdbarch); | |
554 | memcpy (context_offset, &value, size); | |
555 | } | |
7be2bb4f TT |
556 | /* Make sure we only rewrite the PC a single time. */ |
557 | th->pc_adjusted = true; | |
0a4afda3 TT |
558 | } |
559 | regcache->raw_supply (r, context_offset); | |
560 | } | |
9a325b7b JB |
561 | } |
562 | ||
563 | void | |
564 | windows_nat_target::fetch_registers (struct regcache *regcache, int r) | |
565 | { | |
28688adf | 566 | windows_thread_info *th = thread_rec (regcache->ptid (), INVALIDATE_CONTEXT); |
9a325b7b JB |
567 | |
568 | /* Check if TH exists. Windows sometimes uses a non-existent | |
569 | thread id in its events. */ | |
570 | if (th == NULL) | |
571 | return; | |
6c7de422 | 572 | |
3de88e9a | 573 | if (th->reload_context) |
3ade5333 | 574 | { |
f20c58f5 | 575 | #ifdef __CYGWIN__ |
a244bdca CF |
576 | if (have_saved_context) |
577 | { | |
581e13c1 MS |
578 | /* Lie about where the program actually is stopped since |
579 | cygwin has informed us that we should consider the signal | |
580 | to have occurred at another location which is stored in | |
581 | "saved_context. */ | |
3de88e9a | 582 | memcpy (&th->context, &saved_context, |
581e13c1 | 583 | __COPY_CONTEXT_SIZE); |
a244bdca CF |
584 | have_saved_context = 0; |
585 | } | |
586 | else | |
46f9f931 HD |
587 | #endif |
588 | #ifdef __x86_64__ | |
589 | if (wow64_process) | |
590 | { | |
591 | th->wow64_context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
592 | CHECK (Wow64GetThreadContext (th->h, &th->wow64_context)); | |
593 | /* Copy dr values from that thread. | |
594 | But only if there were not modified since last stop. | |
595 | PR gdb/2388 */ | |
596 | if (!debug_registers_changed) | |
597 | { | |
598 | dr[0] = th->wow64_context.Dr0; | |
599 | dr[1] = th->wow64_context.Dr1; | |
600 | dr[2] = th->wow64_context.Dr2; | |
601 | dr[3] = th->wow64_context.Dr3; | |
602 | dr[6] = th->wow64_context.Dr6; | |
603 | dr[7] = th->wow64_context.Dr7; | |
604 | } | |
605 | } | |
606 | else | |
cb832706 | 607 | #endif |
a244bdca | 608 | { |
a244bdca | 609 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
17617f2d | 610 | CHECK (GetThreadContext (th->h, &th->context)); |
2b008701 | 611 | /* Copy dr values from that thread. |
581e13c1 MS |
612 | But only if there were not modified since last stop. |
613 | PR gdb/2388 */ | |
88616312 PM |
614 | if (!debug_registers_changed) |
615 | { | |
616 | dr[0] = th->context.Dr0; | |
617 | dr[1] = th->context.Dr1; | |
618 | dr[2] = th->context.Dr2; | |
619 | dr[3] = th->context.Dr3; | |
620 | dr[6] = th->context.Dr6; | |
621 | dr[7] = th->context.Dr7; | |
622 | } | |
a244bdca | 623 | } |
62fe396b | 624 | th->reload_context = false; |
3ade5333 CF |
625 | } |
626 | ||
9a325b7b JB |
627 | if (r < 0) |
628 | for (r = 0; r < gdbarch_num_regs (regcache->arch()); r++) | |
629 | windows_fetch_one_register (regcache, th, r); | |
3cee93ac | 630 | else |
9a325b7b | 631 | windows_fetch_one_register (regcache, th, r); |
3cee93ac CF |
632 | } |
633 | ||
9a325b7b JB |
634 | /* Collect the register number R from the given regcache, and store |
635 | its value into the corresponding area of the given thread's context. | |
3de88e9a | 636 | |
9a325b7b JB |
637 | This function assumes that R is non-negative. A failed assertion |
638 | assertion is raised if that is not true. */ | |
3cee93ac CF |
639 | |
640 | static void | |
9a325b7b JB |
641 | windows_store_one_register (const struct regcache *regcache, |
642 | windows_thread_info *th, int r) | |
3cee93ac | 643 | { |
9a325b7b JB |
644 | gdb_assert (r >= 0); |
645 | ||
46f9f931 HD |
646 | char *context_ptr = (char *) &th->context; |
647 | #ifdef __x86_64__ | |
648 | if (wow64_process) | |
649 | context_ptr = (char *) &th->wow64_context; | |
650 | #endif | |
651 | ||
652 | regcache->raw_collect (r, context_ptr + mappings[r]); | |
24e60978 SC |
653 | } |
654 | ||
3de88e9a SM |
655 | /* Store a new register value into the context of the thread tied to |
656 | REGCACHE. */ | |
f6ac5f3d PA |
657 | |
658 | void | |
659 | windows_nat_target::store_registers (struct regcache *regcache, int r) | |
3cee93ac | 660 | { |
28688adf | 661 | windows_thread_info *th = thread_rec (regcache->ptid (), INVALIDATE_CONTEXT); |
3de88e9a SM |
662 | |
663 | /* Check if TH exists. Windows sometimes uses a non-existent | |
581e13c1 | 664 | thread id in its events. */ |
9a325b7b JB |
665 | if (th == NULL) |
666 | return; | |
667 | ||
668 | if (r < 0) | |
669 | for (r = 0; r < gdbarch_num_regs (regcache->arch ()); r++) | |
670 | windows_store_one_register (regcache, th, r); | |
671 | else | |
672 | windows_store_one_register (regcache, th, r); | |
3cee93ac | 673 | } |
24e60978 | 674 | |
581e13c1 | 675 | /* Maintain a linked list of "so" information. */ |
d0e449a1 | 676 | struct lm_info_windows : public lm_info_base |
02e423b9 | 677 | { |
f8fdb78e | 678 | LPVOID load_addr = 0; |
c162ed3e | 679 | CORE_ADDR text_offset = 0; |
3ee6f623 CF |
680 | }; |
681 | ||
682 | static struct so_list solib_start, *solib_end; | |
02e423b9 | 683 | |
de1b3c3d | 684 | static struct so_list * |
dc05df57 | 685 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 686 | { |
3ee6f623 | 687 | struct so_list *so; |
d0d0ab16 CV |
688 | char *p; |
689 | #ifndef __CYGWIN__ | |
b3c613f2 CF |
690 | char buf[__PMAX]; |
691 | char cwd[__PMAX]; | |
3f8ad85b CF |
692 | WIN32_FIND_DATA w32_fd; |
693 | HANDLE h = FindFirstFile(name, &w32_fd); | |
3f8ad85b | 694 | |
6badb179 CF |
695 | if (h == INVALID_HANDLE_VALUE) |
696 | strcpy (buf, name); | |
697 | else | |
3f8ad85b | 698 | { |
c914e0cc CF |
699 | FindClose (h); |
700 | strcpy (buf, name); | |
701 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
702 | { | |
703 | p = strrchr (buf, '\\'); | |
704 | if (p) | |
705 | p[1] = '\0'; | |
706 | SetCurrentDirectory (buf); | |
707 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
708 | SetCurrentDirectory (cwd); | |
709 | } | |
3f8ad85b | 710 | } |
3ee6f623 CF |
711 | if (strcasecmp (buf, "ntdll.dll") == 0) |
712 | { | |
713 | GetSystemDirectory (buf, sizeof (buf)); | |
714 | strcat (buf, "\\ntdll.dll"); | |
715 | } | |
d0d0ab16 | 716 | #else |
b3c613f2 | 717 | cygwin_buf_t buf[__PMAX]; |
d0d0ab16 | 718 | |
b3c613f2 | 719 | buf[0] = 0; |
d0d0ab16 CV |
720 | if (access (name, F_OK) != 0) |
721 | { | |
722 | if (strcasecmp (name, "ntdll.dll") == 0) | |
b3c613f2 | 723 | #ifdef __USEWIDE |
d0d0ab16 CV |
724 | { |
725 | GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t)); | |
726 | wcscat (buf, L"\\ntdll.dll"); | |
727 | } | |
b3c613f2 CF |
728 | #else |
729 | { | |
730 | GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t)); | |
731 | strcat (buf, "\\ntdll.dll"); | |
732 | } | |
733 | #endif | |
d0d0ab16 CV |
734 | } |
735 | #endif | |
41bf6aca | 736 | so = XCNEW (struct so_list); |
f8fdb78e | 737 | lm_info_windows *li = new lm_info_windows; |
d0e449a1 SM |
738 | so->lm_info = li; |
739 | li->load_addr = load_addr; | |
de1b3c3d | 740 | strcpy (so->so_original_name, name); |
10325bc5 PA |
741 | #ifndef __CYGWIN__ |
742 | strcpy (so->so_name, buf); | |
743 | #else | |
d0d0ab16 CV |
744 | if (buf[0]) |
745 | cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name, | |
746 | SO_NAME_MAX_PATH_SIZE); | |
747 | else | |
748 | { | |
60c5c021 | 749 | char *rname = realpath (name, NULL); |
d0d0ab16 CV |
750 | if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE) |
751 | { | |
752 | strcpy (so->so_name, rname); | |
753 | free (rname); | |
754 | } | |
755 | else | |
a0e9b532 JT |
756 | { |
757 | warning (_("dll path for \"%s\" too long or inaccessible"), name); | |
758 | strcpy (so->so_name, so->so_original_name); | |
759 | } | |
d0d0ab16 | 760 | } |
de1b3c3d PA |
761 | /* Record cygwin1.dll .text start/end. */ |
762 | p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1); | |
763 | if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0) | |
764 | { | |
de1b3c3d | 765 | asection *text = NULL; |
8e860359 | 766 | |
ad80db5b | 767 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->so_name, "pei-i386")); |
a244bdca | 768 | |
192b62ce | 769 | if (abfd == NULL) |
de1b3c3d PA |
770 | return so; |
771 | ||
192b62ce TT |
772 | if (bfd_check_format (abfd.get (), bfd_object)) |
773 | text = bfd_get_section_by_name (abfd.get (), ".text"); | |
de1b3c3d PA |
774 | |
775 | if (!text) | |
192b62ce | 776 | return so; |
de1b3c3d | 777 | |
7a9dd1b2 | 778 | /* The symbols in a dll are offset by 0x1000, which is the |
de1b3c3d | 779 | offset from 0 of the first byte in an image - because of the |
581e13c1 MS |
780 | file header and the section alignment. */ |
781 | cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) | |
782 | load_addr + 0x1000); | |
fd361982 | 783 | cygwin_load_end = cygwin_load_start + bfd_section_size (text); |
de1b3c3d | 784 | } |
10325bc5 | 785 | #endif |
de1b3c3d PA |
786 | |
787 | return so; | |
8e860359 CF |
788 | } |
789 | ||
a816ba18 | 790 | /* See nat/windows-nat.h. */ |
1cd9feab | 791 | |
a816ba18 | 792 | void |
e228ef97 | 793 | windows_nat::handle_load_dll (const char *dll_name, LPVOID base) |
24e60978 | 794 | { |
e228ef97 TT |
795 | solib_end->next = windows_make_so (dll_name, base); |
796 | solib_end = solib_end->next; | |
450005e7 | 797 | |
d0e449a1 SM |
798 | lm_info_windows *li = (lm_info_windows *) solib_end->lm_info; |
799 | ||
4ef367bf TT |
800 | DEBUG_EVENTS ("Loading dll \"%s\" at %s.", solib_end->so_name, |
801 | host_address_to_string (li->load_addr)); | |
450005e7 CF |
802 | } |
803 | ||
3ee6f623 | 804 | static void |
dc05df57 | 805 | windows_free_so (struct so_list *so) |
3ee6f623 | 806 | { |
f8fdb78e SM |
807 | lm_info_windows *li = (lm_info_windows *) so->lm_info; |
808 | ||
809 | delete li; | |
de1b3c3d | 810 | xfree (so); |
3cb8e7f6 CF |
811 | } |
812 | ||
a816ba18 | 813 | /* See nat/windows-nat.h. */ |
3be75f87 | 814 | |
a816ba18 TT |
815 | void |
816 | windows_nat::handle_unload_dll () | |
d3ff4a77 | 817 | { |
d3653bf6 | 818 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
3ee6f623 | 819 | struct so_list *so; |
d3ff4a77 CF |
820 | |
821 | for (so = &solib_start; so->next != NULL; so = so->next) | |
d0e449a1 SM |
822 | { |
823 | lm_info_windows *li_next = (lm_info_windows *) so->next->lm_info; | |
a25cd31f | 824 | |
d0e449a1 SM |
825 | if (li_next->load_addr == lpBaseOfDll) |
826 | { | |
827 | struct so_list *sodel = so->next; | |
7488902c | 828 | |
d0e449a1 SM |
829 | so->next = sodel->next; |
830 | if (!so->next) | |
831 | solib_end = so; | |
4ef367bf | 832 | DEBUG_EVENTS ("Unloading dll \"%s\".", sodel->so_name); |
d0e449a1 SM |
833 | |
834 | windows_free_so (sodel); | |
bf469271 | 835 | return; |
d0e449a1 SM |
836 | } |
837 | } | |
3929abe9 | 838 | |
ecc13e53 JB |
839 | /* We did not find any DLL that was previously loaded at this address, |
840 | so register a complaint. We do not report an error, because we have | |
841 | observed that this may be happening under some circumstances. For | |
842 | instance, running 32bit applications on x64 Windows causes us to receive | |
843 | 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these | |
844 | events are apparently caused by the WOW layer, the interface between | |
845 | 32bit and 64bit worlds). */ | |
b98664d3 | 846 | complaint (_("dll starting at %s not found."), |
ecc13e53 | 847 | host_address_to_string (lpBaseOfDll)); |
bf469271 PA |
848 | } |
849 | ||
850 | /* Call FUNC wrapped in a TRY/CATCH that swallows all GDB | |
851 | exceptions. */ | |
d3ff4a77 | 852 | |
bf469271 PA |
853 | static void |
854 | catch_errors (void (*func) ()) | |
855 | { | |
a70b8144 | 856 | try |
bf469271 PA |
857 | { |
858 | func (); | |
859 | } | |
230d2906 | 860 | catch (const gdb_exception &ex) |
bf469271 PA |
861 | { |
862 | exception_print (gdb_stderr, ex); | |
863 | } | |
d3ff4a77 CF |
864 | } |
865 | ||
581e13c1 | 866 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 867 | static void |
dc05df57 | 868 | windows_clear_solib (void) |
450005e7 | 869 | { |
25057eb0 HD |
870 | struct so_list *so; |
871 | ||
872 | for (so = solib_start.next; so; so = solib_start.next) | |
873 | { | |
874 | solib_start.next = so->next; | |
875 | windows_free_so (so); | |
876 | } | |
877 | ||
450005e7 | 878 | solib_end = &solib_start; |
450005e7 | 879 | } |
295732ea | 880 | |
463888ab | 881 | static void |
0b39b52e | 882 | signal_event_command (const char *args, int from_tty) |
463888ab РИ |
883 | { |
884 | uintptr_t event_id = 0; | |
885 | char *endargs = NULL; | |
886 | ||
887 | if (args == NULL) | |
888 | error (_("signal-event requires an argument (integer event id)")); | |
889 | ||
890 | event_id = strtoumax (args, &endargs, 10); | |
891 | ||
892 | if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) || | |
893 | ((HANDLE) event_id == INVALID_HANDLE_VALUE)) | |
894 | error (_("Failed to convert `%s' to event id"), args); | |
895 | ||
896 | SetEvent ((HANDLE) event_id); | |
897 | CloseHandle ((HANDLE) event_id); | |
898 | } | |
899 | ||
d41b524f TT |
900 | /* See nat/windows-nat.h. */ |
901 | ||
902 | int | |
903 | windows_nat::handle_output_debug_string (struct target_waitstatus *ourstatus) | |
3cee93ac | 904 | { |
a244bdca | 905 | int retval = 0; |
3cee93ac | 906 | |
66920317 TT |
907 | gdb::unique_xmalloc_ptr<char> s |
908 | = (target_read_string | |
909 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, | |
910 | 1024)); | |
911 | if (s == nullptr || !*(s.get ())) | |
a244bdca | 912 | /* nothing to do */; |
e83e4e24 | 913 | else if (!startswith (s.get (), _CYGWIN_SIGNAL_STRING)) |
3cee93ac | 914 | { |
10325bc5 | 915 | #ifdef __CYGWIN__ |
e83e4e24 | 916 | if (!startswith (s.get (), "cYg")) |
10325bc5 | 917 | #endif |
040ea00b | 918 | { |
e83e4e24 | 919 | char *p = strchr (s.get (), '\0'); |
040ea00b | 920 | |
e83e4e24 | 921 | if (p > s.get () && *--p == '\n') |
040ea00b | 922 | *p = '\0'; |
e83e4e24 | 923 | warning (("%s"), s.get ()); |
040ea00b | 924 | } |
3cee93ac | 925 | } |
f20c58f5 | 926 | #ifdef __CYGWIN__ |
d3a09475 | 927 | else |
3cee93ac | 928 | { |
581e13c1 MS |
929 | /* Got a cygwin signal marker. A cygwin signal is followed by |
930 | the signal number itself and then optionally followed by the | |
931 | thread id and address to saved context within the DLL. If | |
932 | these are supplied, then the given thread is assumed to have | |
933 | issued the signal and the context from the thread is assumed | |
934 | to be stored at the given address in the inferior. Tell gdb | |
935 | to treat this like a real signal. */ | |
3cee93ac | 936 | char *p; |
e83e4e24 | 937 | int sig = strtol (s.get () + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
0ae534d2 | 938 | gdb_signal gotasig = gdb_signal_from_host (sig); |
c62fa0e2 | 939 | |
0714f9bf SS |
940 | ourstatus->value.sig = gotasig; |
941 | if (gotasig) | |
a244bdca CF |
942 | { |
943 | LPCVOID x; | |
2c15ef43 | 944 | SIZE_T n; |
c62fa0e2 | 945 | |
a244bdca CF |
946 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
947 | retval = strtoul (p, &p, 0); | |
948 | if (!retval) | |
ab4ee614 | 949 | retval = current_event.dwThreadId; |
40653b35 | 950 | else if ((x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0)) |
a244bdca | 951 | && ReadProcessMemory (current_process_handle, x, |
581e13c1 MS |
952 | &saved_context, |
953 | __COPY_CONTEXT_SIZE, &n) | |
a244bdca CF |
954 | && n == __COPY_CONTEXT_SIZE) |
955 | have_saved_context = 1; | |
a244bdca | 956 | } |
3cee93ac | 957 | } |
cb832706 | 958 | #endif |
3cee93ac | 959 | |
a244bdca | 960 | return retval; |
3cee93ac | 961 | } |
24e60978 | 962 | |
c1748f97 PM |
963 | static int |
964 | display_selector (HANDLE thread, DWORD sel) | |
965 | { | |
966 | LDT_ENTRY info; | |
46f9f931 HD |
967 | BOOL ret; |
968 | #ifdef __x86_64__ | |
969 | if (wow64_process) | |
970 | ret = Wow64GetThreadSelectorEntry (thread, sel, &info); | |
971 | else | |
972 | #endif | |
973 | ret = GetThreadSelectorEntry (thread, sel, &info); | |
974 | if (ret) | |
c1748f97 PM |
975 | { |
976 | int base, limit; | |
d50a0ce2 | 977 | printf_filtered ("0x%03x: ", (unsigned) sel); |
c1748f97 | 978 | if (!info.HighWord.Bits.Pres) |
baa93fa6 CF |
979 | { |
980 | puts_filtered ("Segment not present\n"); | |
981 | return 0; | |
982 | } | |
c1748f97 PM |
983 | base = (info.HighWord.Bits.BaseHi << 24) + |
984 | (info.HighWord.Bits.BaseMid << 16) | |
985 | + info.BaseLow; | |
986 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
987 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 988 | limit = (limit << 12) | 0xfff; |
c1748f97 PM |
989 | printf_filtered ("base=0x%08x limit=0x%08x", base, limit); |
990 | if (info.HighWord.Bits.Default_Big) | |
baa93fa6 | 991 | puts_filtered(" 32-bit "); |
c1748f97 | 992 | else |
baa93fa6 | 993 | puts_filtered(" 16-bit "); |
c1748f97 PM |
994 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
995 | { | |
996 | case 0: | |
baa93fa6 CF |
997 | puts_filtered ("Data (Read-Only, Exp-up"); |
998 | break; | |
c1748f97 | 999 | case 1: |
baa93fa6 CF |
1000 | puts_filtered ("Data (Read/Write, Exp-up"); |
1001 | break; | |
c1748f97 | 1002 | case 2: |
baa93fa6 CF |
1003 | puts_filtered ("Unused segment ("); |
1004 | break; | |
c1748f97 | 1005 | case 3: |
baa93fa6 CF |
1006 | puts_filtered ("Data (Read/Write, Exp-down"); |
1007 | break; | |
c1748f97 | 1008 | case 4: |
baa93fa6 CF |
1009 | puts_filtered ("Code (Exec-Only, N.Conf"); |
1010 | break; | |
c1748f97 | 1011 | case 5: |
baa93fa6 | 1012 | puts_filtered ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
1013 | break; |
1014 | case 6: | |
baa93fa6 | 1015 | puts_filtered ("Code (Exec-Only, Conf"); |
c1748f97 PM |
1016 | break; |
1017 | case 7: | |
baa93fa6 | 1018 | puts_filtered ("Code (Exec/Read, Conf"); |
c1748f97 PM |
1019 | break; |
1020 | default: | |
e432ccf1 JT |
1021 | printf_filtered ("Unknown type 0x%lx", |
1022 | (unsigned long) info.HighWord.Bits.Type); | |
c1748f97 PM |
1023 | } |
1024 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
baa93fa6 | 1025 | puts_filtered(", N.Acc"); |
c1748f97 PM |
1026 | puts_filtered (")\n"); |
1027 | if ((info.HighWord.Bits.Type & 0x10) == 0) | |
1028 | puts_filtered("System selector "); | |
e432ccf1 JT |
1029 | printf_filtered ("Priviledge level = %ld. ", |
1030 | (unsigned long) info.HighWord.Bits.Dpl); | |
c1748f97 | 1031 | if (info.HighWord.Bits.Granularity) |
baa93fa6 | 1032 | puts_filtered ("Page granular.\n"); |
c1748f97 PM |
1033 | else |
1034 | puts_filtered ("Byte granular.\n"); | |
1035 | return 1; | |
1036 | } | |
1037 | else | |
1038 | { | |
5572ce1f PM |
1039 | DWORD err = GetLastError (); |
1040 | if (err == ERROR_NOT_SUPPORTED) | |
1041 | printf_filtered ("Function not supported\n"); | |
1042 | else | |
d50a0ce2 | 1043 | printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel); |
c1748f97 PM |
1044 | return 0; |
1045 | } | |
1046 | } | |
1047 | ||
1048 | static void | |
5fed81ff | 1049 | display_selectors (const char * args, int from_tty) |
c1748f97 | 1050 | { |
50838d1b | 1051 | if (inferior_ptid == null_ptid) |
c1748f97 PM |
1052 | { |
1053 | puts_filtered ("Impossible to display selectors now.\n"); | |
1054 | return; | |
1055 | } | |
50838d1b PA |
1056 | |
1057 | windows_thread_info *current_windows_thread | |
1058 | = thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT); | |
1059 | ||
c1748f97 PM |
1060 | if (!args) |
1061 | { | |
46f9f931 HD |
1062 | #ifdef __x86_64__ |
1063 | if (wow64_process) | |
1064 | { | |
1065 | puts_filtered ("Selector $cs\n"); | |
3c76026d TT |
1066 | display_selector (current_windows_thread->h, |
1067 | current_windows_thread->wow64_context.SegCs); | |
46f9f931 | 1068 | puts_filtered ("Selector $ds\n"); |
3c76026d TT |
1069 | display_selector (current_windows_thread->h, |
1070 | current_windows_thread->wow64_context.SegDs); | |
46f9f931 | 1071 | puts_filtered ("Selector $es\n"); |
3c76026d TT |
1072 | display_selector (current_windows_thread->h, |
1073 | current_windows_thread->wow64_context.SegEs); | |
46f9f931 | 1074 | puts_filtered ("Selector $ss\n"); |
3c76026d TT |
1075 | display_selector (current_windows_thread->h, |
1076 | current_windows_thread->wow64_context.SegSs); | |
46f9f931 | 1077 | puts_filtered ("Selector $fs\n"); |
3c76026d TT |
1078 | display_selector (current_windows_thread->h, |
1079 | current_windows_thread->wow64_context.SegFs); | |
46f9f931 | 1080 | puts_filtered ("Selector $gs\n"); |
3c76026d TT |
1081 | display_selector (current_windows_thread->h, |
1082 | current_windows_thread->wow64_context.SegGs); | |
46f9f931 HD |
1083 | } |
1084 | else | |
1085 | #endif | |
1086 | { | |
1087 | puts_filtered ("Selector $cs\n"); | |
3c76026d TT |
1088 | display_selector (current_windows_thread->h, |
1089 | current_windows_thread->context.SegCs); | |
46f9f931 | 1090 | puts_filtered ("Selector $ds\n"); |
3c76026d TT |
1091 | display_selector (current_windows_thread->h, |
1092 | current_windows_thread->context.SegDs); | |
46f9f931 | 1093 | puts_filtered ("Selector $es\n"); |
3c76026d TT |
1094 | display_selector (current_windows_thread->h, |
1095 | current_windows_thread->context.SegEs); | |
46f9f931 | 1096 | puts_filtered ("Selector $ss\n"); |
3c76026d TT |
1097 | display_selector (current_windows_thread->h, |
1098 | current_windows_thread->context.SegSs); | |
46f9f931 | 1099 | puts_filtered ("Selector $fs\n"); |
3c76026d TT |
1100 | display_selector (current_windows_thread->h, |
1101 | current_windows_thread->context.SegFs); | |
46f9f931 | 1102 | puts_filtered ("Selector $gs\n"); |
3c76026d TT |
1103 | display_selector (current_windows_thread->h, |
1104 | current_windows_thread->context.SegGs); | |
46f9f931 | 1105 | } |
c1748f97 PM |
1106 | } |
1107 | else | |
1108 | { | |
1109 | int sel; | |
1110 | sel = parse_and_eval_long (args); | |
1111 | printf_filtered ("Selector \"%s\"\n",args); | |
3c76026d | 1112 | display_selector (current_windows_thread->h, sel); |
c1748f97 PM |
1113 | } |
1114 | } | |
1115 | ||
8d30e395 | 1116 | /* See nat/windows-nat.h. */ |
7393af7c | 1117 | |
8d30e395 TT |
1118 | bool |
1119 | windows_nat::handle_ms_vc_exception (const EXCEPTION_RECORD *rec) | |
24e60978 | 1120 | { |
8d30e395 TT |
1121 | if (rec->NumberParameters >= 3 |
1122 | && (rec->ExceptionInformation[0] & 0xffffffff) == 0x1000) | |
24e60978 | 1123 | { |
8d30e395 TT |
1124 | DWORD named_thread_id; |
1125 | windows_thread_info *named_thread; | |
1126 | CORE_ADDR thread_name_target; | |
24cdb46e | 1127 | |
8d30e395 TT |
1128 | thread_name_target = rec->ExceptionInformation[1]; |
1129 | named_thread_id = (DWORD) (0xffffffff & rec->ExceptionInformation[2]); | |
24cdb46e | 1130 | |
8d30e395 TT |
1131 | if (named_thread_id == (DWORD) -1) |
1132 | named_thread_id = current_event.dwThreadId; | |
24cdb46e | 1133 | |
8d30e395 TT |
1134 | named_thread = thread_rec (ptid_t (current_event.dwProcessId, |
1135 | named_thread_id, 0), | |
1136 | DONT_INVALIDATE_CONTEXT); | |
1137 | if (named_thread != NULL) | |
1138 | { | |
1139 | int thread_name_len; | |
66920317 TT |
1140 | gdb::unique_xmalloc_ptr<char> thread_name |
1141 | = target_read_string (thread_name_target, 1025, &thread_name_len); | |
8d30e395 | 1142 | if (thread_name_len > 0) |
24cdb46e | 1143 | { |
8d30e395 TT |
1144 | thread_name.get ()[thread_name_len - 1] = '\0'; |
1145 | named_thread->name = std::move (thread_name); | |
24cdb46e | 1146 | } |
24cdb46e | 1147 | } |
8d30e395 TT |
1148 | |
1149 | return true; | |
24e60978 | 1150 | } |
8d30e395 TT |
1151 | |
1152 | return false; | |
24e60978 SC |
1153 | } |
1154 | ||
a010605f TT |
1155 | /* See nat/windows-nat.h. */ |
1156 | ||
1157 | bool | |
1158 | windows_nat::handle_access_violation (const EXCEPTION_RECORD *rec) | |
1159 | { | |
1160 | #ifdef __CYGWIN__ | |
1161 | /* See if the access violation happened within the cygwin DLL | |
1162 | itself. Cygwin uses a kind of exception handling to deal with | |
1163 | passed-in invalid addresses. gdb should not treat these as real | |
1164 | SEGVs since they will be silently handled by cygwin. A real SEGV | |
1165 | will (theoretically) be caught by cygwin later in the process and | |
1166 | will be sent as a cygwin-specific-signal. So, ignore SEGVs if | |
1167 | they show up within the text segment of the DLL itself. */ | |
1168 | const char *fn; | |
1169 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) rec->ExceptionAddress; | |
1170 | ||
1171 | if ((!cygwin_exceptions && (addr >= cygwin_load_start | |
1172 | && addr < cygwin_load_end)) | |
1173 | || (find_pc_partial_function (addr, &fn, NULL, NULL) | |
1174 | && startswith (fn, "KERNEL32!IsBad"))) | |
1175 | return true; | |
1176 | #endif | |
1177 | return false; | |
1178 | } | |
1179 | ||
17617f2d EZ |
1180 | /* Resume thread specified by ID, or all artificially suspended |
1181 | threads, if we are continuing execution. KILLED non-zero means we | |
1182 | have killed the inferior, so we should ignore weird errors due to | |
1183 | threads shutting down. */ | |
3cee93ac | 1184 | static BOOL |
17617f2d | 1185 | windows_continue (DWORD continue_status, int id, int killed) |
3cee93ac | 1186 | { |
3cee93ac CF |
1187 | BOOL res; |
1188 | ||
0a4afda3 TT |
1189 | desired_stop_thread_id = id; |
1190 | ||
e758e19c TT |
1191 | if (matching_pending_stop (debug_events)) |
1192 | return TRUE; | |
6537bb24 | 1193 | |
93366324 | 1194 | for (windows_thread_info *th : thread_list) |
0a4afda3 | 1195 | if (id == -1 || id == (int) th->tid) |
6537bb24 | 1196 | { |
0a4afda3 TT |
1197 | if (!th->suspended) |
1198 | continue; | |
46f9f931 HD |
1199 | #ifdef __x86_64__ |
1200 | if (wow64_process) | |
6537bb24 | 1201 | { |
46f9f931 HD |
1202 | if (debug_registers_changed) |
1203 | { | |
1204 | th->wow64_context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
1205 | th->wow64_context.Dr0 = dr[0]; | |
1206 | th->wow64_context.Dr1 = dr[1]; | |
1207 | th->wow64_context.Dr2 = dr[2]; | |
1208 | th->wow64_context.Dr3 = dr[3]; | |
1209 | th->wow64_context.Dr6 = DR6_CLEAR_VALUE; | |
1210 | th->wow64_context.Dr7 = dr[7]; | |
1211 | } | |
1212 | if (th->wow64_context.ContextFlags) | |
1213 | { | |
1214 | DWORD ec = 0; | |
1215 | ||
1216 | if (GetExitCodeThread (th->h, &ec) | |
1217 | && ec == STILL_ACTIVE) | |
1218 | { | |
1219 | BOOL status = Wow64SetThreadContext (th->h, | |
1220 | &th->wow64_context); | |
1221 | ||
1222 | if (!killed) | |
1223 | CHECK (status); | |
1224 | } | |
1225 | th->wow64_context.ContextFlags = 0; | |
1226 | } | |
6537bb24 | 1227 | } |
46f9f931 HD |
1228 | else |
1229 | #endif | |
6537bb24 | 1230 | { |
46f9f931 | 1231 | if (debug_registers_changed) |
17617f2d | 1232 | { |
46f9f931 HD |
1233 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; |
1234 | th->context.Dr0 = dr[0]; | |
1235 | th->context.Dr1 = dr[1]; | |
1236 | th->context.Dr2 = dr[2]; | |
1237 | th->context.Dr3 = dr[3]; | |
1238 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1239 | th->context.Dr7 = dr[7]; | |
1240 | } | |
1241 | if (th->context.ContextFlags) | |
1242 | { | |
1243 | DWORD ec = 0; | |
1244 | ||
1245 | if (GetExitCodeThread (th->h, &ec) | |
1246 | && ec == STILL_ACTIVE) | |
1247 | { | |
1248 | BOOL status = SetThreadContext (th->h, &th->context); | |
17617f2d | 1249 | |
46f9f931 HD |
1250 | if (!killed) |
1251 | CHECK (status); | |
1252 | } | |
1253 | th->context.ContextFlags = 0; | |
17617f2d | 1254 | } |
6537bb24 | 1255 | } |
98a03287 | 1256 | th->resume (); |
6537bb24 | 1257 | } |
0a4afda3 TT |
1258 | else |
1259 | { | |
1260 | /* When single-stepping a specific thread, other threads must | |
1261 | be suspended. */ | |
1262 | th->suspend (); | |
1263 | } | |
6537bb24 | 1264 | |
e758e19c | 1265 | res = continue_last_debug_event (continue_status, debug_events); |
3cee93ac | 1266 | |
68ffc902 JT |
1267 | if (!res) |
1268 | error (_("Failed to resume program execution" | |
1269 | " (ContinueDebugEvent failed, error %u)"), | |
1270 | (unsigned int) GetLastError ()); | |
1271 | ||
fa4ba8da | 1272 | debug_registers_changed = 0; |
3cee93ac CF |
1273 | return res; |
1274 | } | |
1275 | ||
d6dc8049 CF |
1276 | /* Called in pathological case where Windows fails to send a |
1277 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
3ee6f623 | 1278 | static DWORD |
5439edaa | 1279 | fake_create_process (void) |
3ade5333 CF |
1280 | { |
1281 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1282 | current_event.dwProcessId); | |
bf25528d CF |
1283 | if (current_process_handle != NULL) |
1284 | open_process_used = 1; | |
1285 | else | |
1286 | { | |
d50a0ce2 CV |
1287 | error (_("OpenProcess call failed, GetLastError = %u"), |
1288 | (unsigned) GetLastError ()); | |
bf25528d CF |
1289 | /* We can not debug anything in that case. */ |
1290 | } | |
50838d1b PA |
1291 | windows_add_thread (ptid_t (current_event.dwProcessId, 0, |
1292 | current_event.dwThreadId), | |
1293 | current_event.u.CreateThread.hThread, | |
1294 | current_event.u.CreateThread.lpThreadLocalBase, | |
1295 | true /* main_thread_p */); | |
ab4ee614 | 1296 | return current_event.dwThreadId; |
3ade5333 CF |
1297 | } |
1298 | ||
f6ac5f3d PA |
1299 | void |
1300 | windows_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
a244bdca | 1301 | { |
876d1cd7 | 1302 | windows_thread_info *th; |
a244bdca CF |
1303 | DWORD continue_status = DBG_CONTINUE; |
1304 | ||
2dc38344 | 1305 | /* A specific PTID means `step only this thread id'. */ |
d7e15655 | 1306 | int resume_all = ptid == minus_one_ptid; |
2dc38344 PA |
1307 | |
1308 | /* If we're continuing all threads, it's the current inferior that | |
1309 | should be handled specially. */ | |
1310 | if (resume_all) | |
1311 | ptid = inferior_ptid; | |
a244bdca | 1312 | |
a493e3e2 | 1313 | if (sig != GDB_SIGNAL_0) |
a244bdca CF |
1314 | { |
1315 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1316 | { | |
4ef367bf | 1317 | DEBUG_EXCEPT ("Cannot continue with signal %d here.", sig); |
a244bdca CF |
1318 | } |
1319 | else if (sig == last_sig) | |
1320 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1321 | else | |
1322 | #if 0 | |
1323 | /* This code does not seem to work, because | |
1324 | the kernel does probably not consider changes in the ExceptionRecord | |
1325 | structure when passing the exception to the inferior. | |
1326 | Note that this seems possible in the exception handler itself. */ | |
1327 | { | |
73c13fe6 TT |
1328 | for (const xlate_exception &x : xlate) |
1329 | if (x.us == sig) | |
a244bdca | 1330 | { |
581e13c1 | 1331 | current_event.u.Exception.ExceptionRecord.ExceptionCode |
73c13fe6 | 1332 | = x.them; |
a244bdca CF |
1333 | continue_status = DBG_EXCEPTION_NOT_HANDLED; |
1334 | break; | |
1335 | } | |
1336 | if (continue_status == DBG_CONTINUE) | |
1337 | { | |
4ef367bf | 1338 | DEBUG_EXCEPT ("Cannot continue with signal %d.", sig); |
a244bdca CF |
1339 | } |
1340 | } | |
1341 | #endif | |
4ef367bf TT |
1342 | DEBUG_EXCEPT ("Can only continue with received signal %d.", |
1343 | last_sig); | |
a244bdca CF |
1344 | } |
1345 | ||
a493e3e2 | 1346 | last_sig = GDB_SIGNAL_0; |
a244bdca | 1347 | |
4ef367bf TT |
1348 | DEBUG_EXEC ("pid=%d, tid=0x%x, step=%d, sig=%d", |
1349 | ptid.pid (), (unsigned) ptid.lwp (), step, sig); | |
a244bdca | 1350 | |
581e13c1 | 1351 | /* Get context for currently selected thread. */ |
28688adf | 1352 | th = thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT); |
a244bdca CF |
1353 | if (th) |
1354 | { | |
46f9f931 HD |
1355 | #ifdef __x86_64__ |
1356 | if (wow64_process) | |
a244bdca | 1357 | { |
46f9f931 HD |
1358 | if (step) |
1359 | { | |
1360 | /* Single step by setting t bit. */ | |
1361 | struct regcache *regcache = get_current_regcache (); | |
1362 | struct gdbarch *gdbarch = regcache->arch (); | |
1363 | fetch_registers (regcache, gdbarch_ps_regnum (gdbarch)); | |
1364 | th->wow64_context.EFlags |= FLAG_TRACE_BIT; | |
1365 | } | |
a244bdca | 1366 | |
46f9f931 HD |
1367 | if (th->wow64_context.ContextFlags) |
1368 | { | |
1369 | if (debug_registers_changed) | |
1370 | { | |
1371 | th->wow64_context.Dr0 = dr[0]; | |
1372 | th->wow64_context.Dr1 = dr[1]; | |
1373 | th->wow64_context.Dr2 = dr[2]; | |
1374 | th->wow64_context.Dr3 = dr[3]; | |
1375 | th->wow64_context.Dr6 = DR6_CLEAR_VALUE; | |
1376 | th->wow64_context.Dr7 = dr[7]; | |
1377 | } | |
1378 | CHECK (Wow64SetThreadContext (th->h, &th->wow64_context)); | |
1379 | th->wow64_context.ContextFlags = 0; | |
1380 | } | |
1381 | } | |
1382 | else | |
1383 | #endif | |
a244bdca | 1384 | { |
46f9f931 | 1385 | if (step) |
a244bdca | 1386 | { |
46f9f931 HD |
1387 | /* Single step by setting t bit. */ |
1388 | struct regcache *regcache = get_current_regcache (); | |
1389 | struct gdbarch *gdbarch = regcache->arch (); | |
1390 | fetch_registers (regcache, gdbarch_ps_regnum (gdbarch)); | |
1391 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1392 | } | |
1393 | ||
1394 | if (th->context.ContextFlags) | |
1395 | { | |
1396 | if (debug_registers_changed) | |
1397 | { | |
1398 | th->context.Dr0 = dr[0]; | |
1399 | th->context.Dr1 = dr[1]; | |
1400 | th->context.Dr2 = dr[2]; | |
1401 | th->context.Dr3 = dr[3]; | |
1402 | th->context.Dr6 = DR6_CLEAR_VALUE; | |
1403 | th->context.Dr7 = dr[7]; | |
1404 | } | |
1405 | CHECK (SetThreadContext (th->h, &th->context)); | |
1406 | th->context.ContextFlags = 0; | |
a244bdca | 1407 | } |
a244bdca CF |
1408 | } |
1409 | } | |
1410 | ||
1411 | /* Allow continuing with the same signal that interrupted us. | |
581e13c1 | 1412 | Otherwise complain. */ |
a244bdca | 1413 | |
2dc38344 | 1414 | if (resume_all) |
17617f2d | 1415 | windows_continue (continue_status, -1, 0); |
2dc38344 | 1416 | else |
7c7411bc | 1417 | windows_continue (continue_status, ptid.lwp (), 0); |
a244bdca CF |
1418 | } |
1419 | ||
695de547 CF |
1420 | /* Ctrl-C handler used when the inferior is not run in the same console. The |
1421 | handler is in charge of interrupting the inferior using DebugBreakProcess. | |
1422 | Note that this function is not available prior to Windows XP. In this case | |
1423 | we emit a warning. */ | |
d603d4b3 | 1424 | static BOOL WINAPI |
695de547 CF |
1425 | ctrl_c_handler (DWORD event_type) |
1426 | { | |
1427 | const int attach_flag = current_inferior ()->attach_flag; | |
1428 | ||
bb0613a5 PM |
1429 | /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */ |
1430 | if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT) | |
695de547 CF |
1431 | return FALSE; |
1432 | ||
1433 | /* If the inferior and the debugger share the same console, do nothing as | |
1434 | the inferior has also received the Ctrl-C event. */ | |
1435 | if (!new_console && !attach_flag) | |
1436 | return TRUE; | |
1437 | ||
0363df3d HD |
1438 | #ifdef __x86_64__ |
1439 | if (wow64_process) | |
1440 | { | |
1441 | /* Call DbgUiRemoteBreakin of the 32bit ntdll.dll in the target process. | |
1442 | DebugBreakProcess would call the one of the 64bit ntdll.dll, which | |
1443 | can't be correctly handled by gdb. */ | |
1444 | if (wow64_dbgbreak == nullptr) | |
1445 | { | |
1446 | CORE_ADDR addr; | |
1447 | if (!find_minimal_symbol_address ("ntdll!DbgUiRemoteBreakin", | |
1448 | &addr, 0)) | |
1449 | wow64_dbgbreak = (void *) addr; | |
1450 | } | |
1451 | ||
1452 | if (wow64_dbgbreak != nullptr) | |
1453 | { | |
1454 | HANDLE thread = CreateRemoteThread (current_process_handle, NULL, | |
1455 | 0, (LPTHREAD_START_ROUTINE) | |
1456 | wow64_dbgbreak, NULL, 0, NULL); | |
1457 | if (thread) | |
1458 | CloseHandle (thread); | |
1459 | } | |
1460 | } | |
1461 | else | |
1462 | #endif | |
1463 | { | |
1464 | if (!DebugBreakProcess (current_process_handle)) | |
1465 | warning (_("Could not interrupt program. " | |
1466 | "Press Ctrl-c in the program console.")); | |
1467 | } | |
695de547 CF |
1468 | |
1469 | /* Return true to tell that Ctrl-C has been handled. */ | |
1470 | return TRUE; | |
1471 | } | |
1472 | ||
e6ad66bd JT |
1473 | /* Get the next event from the child. Returns a non-zero thread id if the event |
1474 | requires handling by WFI (or whatever). */ | |
5b6d1e4f PA |
1475 | |
1476 | int | |
1477 | windows_nat_target::get_windows_debug_event (int pid, | |
1478 | struct target_waitstatus *ourstatus) | |
1e37c281 JM |
1479 | { |
1480 | BOOL debug_event; | |
8a892701 | 1481 | DWORD continue_status, event_code; |
e6ad66bd | 1482 | DWORD thread_id = 0; |
1e37c281 | 1483 | |
0a4afda3 TT |
1484 | /* If there is a relevant pending stop, report it now. See the |
1485 | comment by the definition of "pending_stops" for details on why | |
1486 | this is needed. */ | |
d2977bc4 TT |
1487 | gdb::optional<pending_stop> stop = fetch_pending_stop (debug_events); |
1488 | if (stop.has_value ()) | |
0a4afda3 | 1489 | { |
d2977bc4 TT |
1490 | thread_id = stop->thread_id; |
1491 | *ourstatus = stop->status; | |
0a4afda3 | 1492 | |
50838d1b PA |
1493 | ptid_t ptid (current_event.dwProcessId, thread_id); |
1494 | windows_thread_info *th = thread_rec (ptid, INVALIDATE_CONTEXT); | |
1495 | th->reload_context = 1; | |
0a4afda3 | 1496 | |
d2977bc4 | 1497 | return thread_id; |
0a4afda3 TT |
1498 | } |
1499 | ||
a493e3e2 | 1500 | last_sig = GDB_SIGNAL_0; |
9d3789f7 | 1501 | |
0a4afda3 | 1502 | if (!(debug_event = wait_for_debug_event (¤t_event, 1000))) |
29fe111d | 1503 | goto out; |
1e37c281 | 1504 | |
1e37c281 | 1505 | continue_status = DBG_CONTINUE; |
1e37c281 | 1506 | |
8a892701 | 1507 | event_code = current_event.dwDebugEventCode; |
450005e7 | 1508 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
a244bdca | 1509 | have_saved_context = 0; |
8a892701 CF |
1510 | |
1511 | switch (event_code) | |
1e37c281 JM |
1512 | { |
1513 | case CREATE_THREAD_DEBUG_EVENT: | |
4ef367bf TT |
1514 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1515 | (unsigned) current_event.dwProcessId, | |
1516 | (unsigned) current_event.dwThreadId, | |
1517 | "CREATE_THREAD_DEBUG_EVENT"); | |
dfe7f3ac | 1518 | if (saw_create != 1) |
3ade5333 | 1519 | { |
5b6d1e4f | 1520 | inferior *inf = find_inferior_pid (this, current_event.dwProcessId); |
181e7f93 | 1521 | if (!saw_create && inf->attach_flag) |
3ade5333 | 1522 | { |
d6dc8049 CF |
1523 | /* Kludge around a Windows bug where first event is a create |
1524 | thread event. Caused when attached process does not have | |
581e13c1 | 1525 | a main thread. */ |
e6ad66bd JT |
1526 | thread_id = fake_create_process (); |
1527 | if (thread_id) | |
181e7f93 | 1528 | saw_create++; |
3ade5333 CF |
1529 | } |
1530 | break; | |
1531 | } | |
581e13c1 | 1532 | /* Record the existence of this thread. */ |
e6ad66bd | 1533 | thread_id = current_event.dwThreadId; |
50838d1b | 1534 | windows_add_thread |
dda83cd7 | 1535 | (ptid_t (current_event.dwProcessId, current_event.dwThreadId, 0), |
c559d709 JB |
1536 | current_event.u.CreateThread.hThread, |
1537 | current_event.u.CreateThread.lpThreadLocalBase, | |
1538 | false /* main_thread_p */); | |
711e434b | 1539 | |
1e37c281 JM |
1540 | break; |
1541 | ||
1542 | case EXIT_THREAD_DEBUG_EVENT: | |
4ef367bf TT |
1543 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1544 | (unsigned) current_event.dwProcessId, | |
1545 | (unsigned) current_event.dwThreadId, | |
1546 | "EXIT_THREAD_DEBUG_EVENT"); | |
7c7411bc TT |
1547 | windows_delete_thread (ptid_t (current_event.dwProcessId, |
1548 | current_event.dwThreadId, 0), | |
c559d709 JB |
1549 | current_event.u.ExitThread.dwExitCode, |
1550 | false /* main_thread_p */); | |
1e37c281 JM |
1551 | break; |
1552 | ||
1553 | case CREATE_PROCESS_DEBUG_EVENT: | |
4ef367bf TT |
1554 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1555 | (unsigned) current_event.dwProcessId, | |
1556 | (unsigned) current_event.dwThreadId, | |
1557 | "CREATE_PROCESS_DEBUG_EVENT"); | |
700b351b | 1558 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
dfe7f3ac | 1559 | if (++saw_create != 1) |
bf25528d | 1560 | break; |
1e37c281 | 1561 | |
dfe7f3ac | 1562 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
581e13c1 | 1563 | /* Add the main thread. */ |
50838d1b | 1564 | windows_add_thread |
dda83cd7 | 1565 | (ptid_t (current_event.dwProcessId, |
7c7411bc | 1566 | current_event.dwThreadId, 0), |
c559d709 JB |
1567 | current_event.u.CreateProcessInfo.hThread, |
1568 | current_event.u.CreateProcessInfo.lpThreadLocalBase, | |
1569 | true /* main_thread_p */); | |
e6ad66bd | 1570 | thread_id = current_event.dwThreadId; |
1e37c281 JM |
1571 | break; |
1572 | ||
1573 | case EXIT_PROCESS_DEBUG_EVENT: | |
4ef367bf TT |
1574 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1575 | (unsigned) current_event.dwProcessId, | |
1576 | (unsigned) current_event.dwThreadId, | |
1577 | "EXIT_PROCESS_DEBUG_EVENT"); | |
16d905e2 CF |
1578 | if (!windows_initialization_done) |
1579 | { | |
223ffa71 | 1580 | target_terminal::ours (); |
bc1e6c81 | 1581 | target_mourn_inferior (inferior_ptid); |
16d905e2 CF |
1582 | error (_("During startup program exited with code 0x%x."), |
1583 | (unsigned int) current_event.u.ExitProcess.dwExitCode); | |
1584 | } | |
1585 | else if (saw_create == 1) | |
1586 | { | |
7c7411bc TT |
1587 | windows_delete_thread (ptid_t (current_event.dwProcessId, |
1588 | current_event.dwThreadId, 0), | |
c559d709 | 1589 | 0, true /* main_thread_p */); |
559e7e50 EZ |
1590 | DWORD exit_status = current_event.u.ExitProcess.dwExitCode; |
1591 | /* If the exit status looks like a fatal exception, but we | |
1592 | don't recognize the exception's code, make the original | |
1593 | exit status value available, to avoid losing | |
1594 | information. */ | |
1595 | int exit_signal | |
1596 | = WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1; | |
1597 | if (exit_signal == -1) | |
1598 | { | |
1599 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1600 | ourstatus->value.integer = exit_status; | |
1601 | } | |
1602 | else | |
1603 | { | |
1604 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1605 | ourstatus->value.sig = gdb_signal_from_host (exit_signal); | |
1606 | } | |
8ed5b76e | 1607 | thread_id = current_event.dwThreadId; |
16d905e2 | 1608 | } |
8a892701 | 1609 | break; |
1e37c281 JM |
1610 | |
1611 | case LOAD_DLL_DEBUG_EVENT: | |
4ef367bf TT |
1612 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1613 | (unsigned) current_event.dwProcessId, | |
1614 | (unsigned) current_event.dwThreadId, | |
1615 | "LOAD_DLL_DEBUG_EVENT"); | |
700b351b | 1616 | CloseHandle (current_event.u.LoadDll.hFile); |
ea39ad35 | 1617 | if (saw_create != 1 || ! windows_initialization_done) |
dfe7f3ac | 1618 | break; |
e228ef97 | 1619 | catch_errors (dll_loaded_event); |
450005e7 CF |
1620 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1621 | ourstatus->value.integer = 0; | |
ab4ee614 | 1622 | thread_id = current_event.dwThreadId; |
1e37c281 JM |
1623 | break; |
1624 | ||
1625 | case UNLOAD_DLL_DEBUG_EVENT: | |
4ef367bf TT |
1626 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1627 | (unsigned) current_event.dwProcessId, | |
1628 | (unsigned) current_event.dwThreadId, | |
1629 | "UNLOAD_DLL_DEBUG_EVENT"); | |
ea39ad35 | 1630 | if (saw_create != 1 || ! windows_initialization_done) |
dfe7f3ac | 1631 | break; |
bf469271 | 1632 | catch_errors (handle_unload_dll); |
de1b3c3d PA |
1633 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
1634 | ourstatus->value.integer = 0; | |
ab4ee614 | 1635 | thread_id = current_event.dwThreadId; |
d3ff4a77 | 1636 | break; |
1e37c281 JM |
1637 | |
1638 | case EXCEPTION_DEBUG_EVENT: | |
4ef367bf TT |
1639 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1640 | (unsigned) current_event.dwProcessId, | |
1641 | (unsigned) current_event.dwThreadId, | |
1642 | "EXCEPTION_DEBUG_EVENT"); | |
dfe7f3ac CF |
1643 | if (saw_create != 1) |
1644 | break; | |
8d30e395 | 1645 | switch (handle_exception (ourstatus, debug_exceptions)) |
24cdb46e РИ |
1646 | { |
1647 | case HANDLE_EXCEPTION_UNHANDLED: | |
1648 | default: | |
1649 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1650 | break; | |
1651 | case HANDLE_EXCEPTION_HANDLED: | |
1652 | thread_id = current_event.dwThreadId; | |
1653 | break; | |
1654 | case HANDLE_EXCEPTION_IGNORED: | |
1655 | continue_status = DBG_CONTINUE; | |
1656 | break; | |
1657 | } | |
1e37c281 JM |
1658 | break; |
1659 | ||
581e13c1 | 1660 | case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */ |
4ef367bf TT |
1661 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
1662 | (unsigned) current_event.dwProcessId, | |
1663 | (unsigned) current_event.dwThreadId, | |
1664 | "OUTPUT_DEBUG_STRING_EVENT"); | |
dfe7f3ac CF |
1665 | if (saw_create != 1) |
1666 | break; | |
e6ad66bd | 1667 | thread_id = handle_output_debug_string (ourstatus); |
1e37c281 | 1668 | break; |
9d3789f7 | 1669 | |
1e37c281 | 1670 | default: |
dfe7f3ac CF |
1671 | if (saw_create != 1) |
1672 | break; | |
0c3d84be | 1673 | printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n", |
d50a0ce2 CV |
1674 | (unsigned) current_event.dwProcessId, |
1675 | (unsigned) current_event.dwThreadId); | |
1676 | printf_unfiltered (" unknown event code %u\n", | |
1677 | (unsigned) current_event.dwDebugEventCode); | |
1e37c281 JM |
1678 | break; |
1679 | } | |
1680 | ||
e6ad66bd | 1681 | if (!thread_id || saw_create != 1) |
a244bdca | 1682 | { |
0a4afda3 TT |
1683 | CHECK (windows_continue (continue_status, desired_stop_thread_id, 0)); |
1684 | } | |
1685 | else if (desired_stop_thread_id != -1 && desired_stop_thread_id != thread_id) | |
1686 | { | |
1687 | /* Pending stop. See the comment by the definition of | |
1688 | "pending_stops" for details on why this is needed. */ | |
4ef367bf TT |
1689 | DEBUG_EVENTS ("get_windows_debug_event - " |
1690 | "unexpected stop in 0x%x (expecting 0x%x)", | |
1691 | thread_id, desired_stop_thread_id); | |
0a4afda3 TT |
1692 | |
1693 | if (current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT | |
13302e95 HD |
1694 | && ((current_event.u.Exception.ExceptionRecord.ExceptionCode |
1695 | == EXCEPTION_BREAKPOINT) | |
1696 | || (current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1697 | == STATUS_WX86_BREAKPOINT)) | |
0a4afda3 TT |
1698 | && windows_initialization_done) |
1699 | { | |
28688adf | 1700 | ptid_t ptid = ptid_t (current_event.dwProcessId, thread_id, 0); |
50838d1b | 1701 | windows_thread_info *th = thread_rec (ptid, INVALIDATE_CONTEXT); |
0a4afda3 | 1702 | th->stopped_at_software_breakpoint = true; |
7be2bb4f | 1703 | th->pc_adjusted = false; |
0a4afda3 TT |
1704 | } |
1705 | pending_stops.push_back ({thread_id, *ourstatus, current_event}); | |
1706 | thread_id = 0; | |
1707 | CHECK (windows_continue (continue_status, desired_stop_thread_id, 0)); | |
a244bdca | 1708 | } |
1e37c281 JM |
1709 | |
1710 | out: | |
e6ad66bd | 1711 | return thread_id; |
1e37c281 JM |
1712 | } |
1713 | ||
2dc38344 | 1714 | /* Wait for interesting events to occur in the target process. */ |
f6ac5f3d PA |
1715 | ptid_t |
1716 | windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
b60cea74 | 1717 | target_wait_flags options) |
24e60978 | 1718 | { |
2dc38344 | 1719 | int pid = -1; |
39f77062 | 1720 | |
24e60978 SC |
1721 | /* We loop when we get a non-standard exception rather than return |
1722 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1723 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 | 1724 | the birth or death of threads, which mean that the current thread |
581e13c1 | 1725 | isn't necessarily what you think it is. */ |
24e60978 SC |
1726 | |
1727 | while (1) | |
450005e7 | 1728 | { |
c57918b2 | 1729 | int retval; |
2b008701 | 1730 | |
695de547 CF |
1731 | /* If the user presses Ctrl-c while the debugger is waiting |
1732 | for an event, he expects the debugger to interrupt his program | |
1733 | and to get the prompt back. There are two possible situations: | |
1734 | ||
1735 | - The debugger and the program do not share the console, in | |
1736 | which case the Ctrl-c event only reached the debugger. | |
1737 | In that case, the ctrl_c handler will take care of interrupting | |
581e13c1 MS |
1738 | the inferior. Note that this case is working starting with |
1739 | Windows XP. For Windows 2000, Ctrl-C should be pressed in the | |
695de547 CF |
1740 | inferior console. |
1741 | ||
1742 | - The debugger and the program share the same console, in which | |
1743 | case both debugger and inferior will receive the Ctrl-c event. | |
1744 | In that case the ctrl_c handler will ignore the event, as the | |
1745 | Ctrl-c event generated inside the inferior will trigger the | |
1746 | expected debug event. | |
1747 | ||
1748 | FIXME: brobecker/2008-05-20: If the inferior receives the | |
1749 | signal first and the delay until GDB receives that signal | |
1750 | is sufficiently long, GDB can sometimes receive the SIGINT | |
1751 | after we have unblocked the CTRL+C handler. This would | |
1752 | lead to the debugger stopping prematurely while handling | |
1753 | the new-thread event that comes with the handling of the SIGINT | |
1754 | inside the inferior, and then stop again immediately when | |
1755 | the user tries to resume the execution in the inferior. | |
1756 | This is a classic race that we should try to fix one day. */ | |
1757 | SetConsoleCtrlHandler (&ctrl_c_handler, TRUE); | |
5b6d1e4f | 1758 | retval = get_windows_debug_event (pid, ourstatus); |
695de547 | 1759 | SetConsoleCtrlHandler (&ctrl_c_handler, FALSE); |
c57918b2 | 1760 | |
450005e7 | 1761 | if (retval) |
0a4afda3 TT |
1762 | { |
1763 | ptid_t result = ptid_t (current_event.dwProcessId, retval, 0); | |
1764 | ||
50838d1b PA |
1765 | if (ourstatus->kind != TARGET_WAITKIND_EXITED |
1766 | && ourstatus->kind != TARGET_WAITKIND_SIGNALLED) | |
0a4afda3 | 1767 | { |
50838d1b PA |
1768 | windows_thread_info *th = thread_rec (result, INVALIDATE_CONTEXT); |
1769 | ||
1770 | if (th != nullptr) | |
7be2bb4f | 1771 | { |
50838d1b PA |
1772 | th->stopped_at_software_breakpoint = false; |
1773 | if (current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT | |
1774 | && ((current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1775 | == EXCEPTION_BREAKPOINT) | |
1776 | || (current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1777 | == STATUS_WX86_BREAKPOINT)) | |
1778 | && windows_initialization_done) | |
1779 | { | |
1780 | th->stopped_at_software_breakpoint = true; | |
1781 | th->pc_adjusted = false; | |
1782 | } | |
7be2bb4f | 1783 | } |
0a4afda3 TT |
1784 | } |
1785 | ||
1786 | return result; | |
1787 | } | |
450005e7 CF |
1788 | else |
1789 | { | |
1790 | int detach = 0; | |
3cee93ac | 1791 | |
98bbd631 AC |
1792 | if (deprecated_ui_loop_hook != NULL) |
1793 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1794 | |
450005e7 | 1795 | if (detach) |
f6ac5f3d | 1796 | kill (); |
450005e7 CF |
1797 | } |
1798 | } | |
24e60978 SC |
1799 | } |
1800 | ||
50838d1b PA |
1801 | void |
1802 | windows_nat_target::do_initial_windows_stuff (DWORD pid, bool attaching) | |
9d3789f7 | 1803 | { |
fa4ba8da | 1804 | int i; |
d6b48e9c | 1805 | struct inferior *inf; |
9d3789f7 | 1806 | |
a493e3e2 | 1807 | last_sig = GDB_SIGNAL_0; |
bf25528d | 1808 | open_process_used = 0; |
fa4ba8da | 1809 | debug_registers_changed = 0; |
dfe7f3ac | 1810 | debug_registers_used = 0; |
fa4ba8da PM |
1811 | for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++) |
1812 | dr[i] = 0; | |
10325bc5 | 1813 | #ifdef __CYGWIN__ |
de1b3c3d | 1814 | cygwin_load_start = cygwin_load_end = 0; |
10325bc5 | 1815 | #endif |
9d3789f7 CF |
1816 | current_event.dwProcessId = pid; |
1817 | memset (¤t_event, 0, sizeof (current_event)); | |
02980c56 | 1818 | inf = current_inferior (); |
c8fbd44a | 1819 | if (!inf->target_is_pushed (this)) |
02980c56 | 1820 | inf->push_target (this); |
cb851954 | 1821 | disable_breakpoints_in_shlibs (); |
dc05df57 | 1822 | windows_clear_solib (); |
88056fbb | 1823 | clear_proceed_status (0); |
9d3789f7 CF |
1824 | init_wait_for_inferior (); |
1825 | ||
46f9f931 HD |
1826 | #ifdef __x86_64__ |
1827 | ignore_first_breakpoint = !attaching && wow64_process; | |
1828 | ||
1829 | if (!wow64_process) | |
1830 | { | |
1831 | windows_set_context_register_offsets (amd64_mappings); | |
1832 | windows_set_segment_register_p (amd64_windows_segment_register_p); | |
1833 | } | |
1834 | else | |
1835 | #endif | |
1836 | { | |
1837 | windows_set_context_register_offsets (i386_mappings); | |
1838 | windows_set_segment_register_p (i386_windows_segment_register_p); | |
1839 | } | |
1840 | ||
6c95b8df | 1841 | inferior_appeared (inf, pid); |
181e7f93 | 1842 | inf->attach_flag = attaching; |
7f9f62ba | 1843 | |
223ffa71 TT |
1844 | target_terminal::init (); |
1845 | target_terminal::inferior (); | |
9d3789f7 | 1846 | |
16d905e2 | 1847 | windows_initialization_done = 0; |
c72f45d1 | 1848 | |
50838d1b PA |
1849 | ptid_t last_ptid; |
1850 | ||
9d3789f7 CF |
1851 | while (1) |
1852 | { | |
c72f45d1 PA |
1853 | struct target_waitstatus status; |
1854 | ||
50838d1b | 1855 | last_ptid = this->wait (minus_one_ptid, &status, 0); |
c72f45d1 PA |
1856 | |
1857 | /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread | |
1858 | events. */ | |
1859 | if (status.kind != TARGET_WAITKIND_LOADED | |
1860 | && status.kind != TARGET_WAITKIND_SPURIOUS) | |
9d3789f7 | 1861 | break; |
c72f45d1 | 1862 | |
50838d1b | 1863 | this->resume (minus_one_ptid, 0, GDB_SIGNAL_0); |
9d3789f7 | 1864 | } |
eff8332b | 1865 | |
50838d1b PA |
1866 | switch_to_thread (find_thread_ptid (this, last_ptid)); |
1867 | ||
ea39ad35 | 1868 | /* Now that the inferior has been started and all DLLs have been mapped, |
3be75f87 JB |
1869 | we can iterate over all DLLs and load them in. |
1870 | ||
1871 | We avoid doing it any earlier because, on certain versions of Windows, | |
1872 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
1873 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
1874 | include the DLL name, preventing us from creating an associated SO. | |
1875 | A possible explanation is that ntdll.dll might be mapped before | |
1876 | the SO info gets created by the Windows system -- ntdll.dll is | |
1877 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
1878 | do not seem to suffer from that problem. | |
1879 | ||
1880 | Rather than try to work around this sort of issue, it is much | |
1881 | simpler to just ignore DLL load/unload events during the startup | |
1882 | phase, and then process them all in one batch now. */ | |
ea39ad35 | 1883 | windows_add_all_dlls (); |
94481b8c | 1884 | |
16d905e2 | 1885 | windows_initialization_done = 1; |
9d3789f7 CF |
1886 | return; |
1887 | } | |
1888 | ||
616a9dc4 CV |
1889 | /* Try to set or remove a user privilege to the current process. Return -1 |
1890 | if that fails, the previous setting of that privilege otherwise. | |
1891 | ||
1892 | This code is copied from the Cygwin source code and rearranged to allow | |
1893 | dynamically loading of the needed symbols from advapi32 which is only | |
581e13c1 | 1894 | available on NT/2K/XP. */ |
616a9dc4 CV |
1895 | static int |
1896 | set_process_privilege (const char *privilege, BOOL enable) | |
1897 | { | |
616a9dc4 CV |
1898 | HANDLE token_hdl = NULL; |
1899 | LUID restore_priv; | |
1900 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1901 | int ret = -1; | |
1902 | DWORD size; | |
1903 | ||
616a9dc4 CV |
1904 | if (!OpenProcessToken (GetCurrentProcess (), |
1905 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1906 | &token_hdl)) | |
1907 | goto out; | |
1908 | ||
418c6cb3 | 1909 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1910 | goto out; |
1911 | ||
1912 | new_priv.PrivilegeCount = 1; | |
1913 | new_priv.Privileges[0].Luid = restore_priv; | |
1914 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1915 | ||
1916 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1917 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1918 | goto out; |
1919 | #if 0 | |
1920 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1921 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
581e13c1 | 1922 | windows_attach(). */ |
616a9dc4 | 1923 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
581e13c1 | 1924 | be enabled. GetLastError () returns an correct error code, though. */ |
616a9dc4 CV |
1925 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) |
1926 | goto out; | |
1927 | #endif | |
1928 | ||
1929 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
1930 | ||
1931 | out: | |
1932 | if (token_hdl) | |
1933 | CloseHandle (token_hdl); | |
1934 | ||
1935 | return ret; | |
1936 | } | |
1937 | ||
02cc9f49 | 1938 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
1939 | |
1940 | void | |
1941 | windows_nat_target::attach (const char *args, int from_tty) | |
24e60978 SC |
1942 | { |
1943 | BOOL ok; | |
559e75c0 | 1944 | DWORD pid; |
24e60978 | 1945 | |
74164c56 | 1946 | pid = parse_pid_to_attach (args); |
24e60978 | 1947 | |
616a9dc4 CV |
1948 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
1949 | { | |
1950 | printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n"); | |
581e13c1 MS |
1951 | printf_unfiltered ("This can cause attach to " |
1952 | "fail on Windows NT/2K/XP\n"); | |
616a9dc4 CV |
1953 | } |
1954 | ||
dc05df57 | 1955 | windows_init_thread_list (); |
9d3789f7 | 1956 | ok = DebugActiveProcess (pid); |
91a175b3 | 1957 | saw_create = 0; |
24e60978 | 1958 | |
10325bc5 | 1959 | #ifdef __CYGWIN__ |
24e60978 | 1960 | if (!ok) |
baa93fa6 | 1961 | { |
581e13c1 | 1962 | /* Try fall back to Cygwin pid. */ |
baa93fa6 CF |
1963 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
1964 | ||
1965 | if (pid > 0) | |
1966 | ok = DebugActiveProcess (pid); | |
10325bc5 PA |
1967 | } |
1968 | #endif | |
baa93fa6 | 1969 | |
10325bc5 | 1970 | if (!ok) |
c9739b6a TT |
1971 | error (_("Can't attach to process %u (error %u)"), |
1972 | (unsigned) pid, (unsigned) GetLastError ()); | |
24e60978 | 1973 | |
2b008701 | 1974 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 1975 | |
24e60978 SC |
1976 | if (from_tty) |
1977 | { | |
d9fa87f4 | 1978 | const char *exec_file = get_exec_file (0); |
24e60978 SC |
1979 | |
1980 | if (exec_file) | |
1981 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
a068643d | 1982 | target_pid_to_str (ptid_t (pid)).c_str ()); |
24e60978 SC |
1983 | else |
1984 | printf_unfiltered ("Attaching to %s\n", | |
a068643d | 1985 | target_pid_to_str (ptid_t (pid)).c_str ()); |
24e60978 SC |
1986 | } |
1987 | ||
46f9f931 HD |
1988 | #ifdef __x86_64__ |
1989 | HANDLE h = OpenProcess (PROCESS_QUERY_INFORMATION, FALSE, pid); | |
1990 | if (h != NULL) | |
1991 | { | |
1992 | BOOL wow64; | |
1993 | if (IsWow64Process (h, &wow64)) | |
1994 | wow64_process = wow64; | |
1995 | CloseHandle (h); | |
1996 | } | |
1997 | #endif | |
1998 | ||
50838d1b | 1999 | do_initial_windows_stuff (pid, 1); |
223ffa71 | 2000 | target_terminal::ours (); |
24e60978 SC |
2001 | } |
2002 | ||
f6ac5f3d PA |
2003 | void |
2004 | windows_nat_target::detach (inferior *inf, int from_tty) | |
24e60978 | 2005 | { |
02cc9f49 CV |
2006 | int detached = 1; |
2007 | ||
8473b447 | 2008 | ptid_t ptid = minus_one_ptid; |
f6ac5f3d | 2009 | resume (ptid, 0, GDB_SIGNAL_0); |
96998ce7 | 2010 | |
2b008701 CF |
2011 | if (!DebugActiveProcessStop (current_event.dwProcessId)) |
2012 | { | |
d50a0ce2 CV |
2013 | error (_("Can't detach process %u (error %u)"), |
2014 | (unsigned) current_event.dwProcessId, (unsigned) GetLastError ()); | |
2b008701 | 2015 | detached = 0; |
02cc9f49 | 2016 | } |
2b008701 CF |
2017 | DebugSetProcessKillOnExit (FALSE); |
2018 | ||
02cc9f49 | 2019 | if (detached && from_tty) |
24e60978 | 2020 | { |
a121b7c1 | 2021 | const char *exec_file = get_exec_file (0); |
24e60978 SC |
2022 | if (exec_file == 0) |
2023 | exec_file = ""; | |
d50a0ce2 CV |
2024 | printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file, |
2025 | (unsigned) current_event.dwProcessId); | |
24e60978 | 2026 | } |
7f9f62ba | 2027 | |
df7e5265 | 2028 | x86_cleanup_dregs (); |
50838d1b | 2029 | switch_to_no_thread (); |
b7a08269 | 2030 | detach_inferior (inf); |
7f9f62ba | 2031 | |
f6ac5f3d | 2032 | maybe_unpush_target (); |
24e60978 SC |
2033 | } |
2034 | ||
47f7ffdb JB |
2035 | /* Try to determine the executable filename. |
2036 | ||
2037 | EXE_NAME_RET is a pointer to a buffer whose size is EXE_NAME_MAX_LEN. | |
2038 | ||
2039 | Upon success, the filename is stored inside EXE_NAME_RET, and | |
2040 | this function returns nonzero. | |
2041 | ||
2042 | Otherwise, this function returns zero and the contents of | |
2043 | EXE_NAME_RET is undefined. */ | |
2044 | ||
2045 | static int | |
2046 | windows_get_exec_module_filename (char *exe_name_ret, size_t exe_name_max_len) | |
2047 | { | |
2048 | DWORD len; | |
2049 | HMODULE dh_buf; | |
2050 | DWORD cbNeeded; | |
2051 | ||
2052 | cbNeeded = 0; | |
46f9f931 HD |
2053 | #ifdef __x86_64__ |
2054 | if (wow64_process) | |
2055 | { | |
2056 | if (!EnumProcessModulesEx (current_process_handle, &dh_buf, | |
2057 | sizeof (HMODULE), &cbNeeded, | |
2058 | LIST_MODULES_32BIT) || !cbNeeded) | |
2059 | return 0; | |
2060 | } | |
2061 | else | |
2062 | #endif | |
2063 | { | |
2064 | if (!EnumProcessModules (current_process_handle, &dh_buf, | |
2065 | sizeof (HMODULE), &cbNeeded) || !cbNeeded) | |
2066 | return 0; | |
2067 | } | |
47f7ffdb JB |
2068 | |
2069 | /* We know the executable is always first in the list of modules, | |
2070 | which we just fetched. So no need to fetch more. */ | |
2071 | ||
2072 | #ifdef __CYGWIN__ | |
2073 | { | |
2074 | /* Cygwin prefers that the path be in /x/y/z format, so extract | |
2075 | the filename into a temporary buffer first, and then convert it | |
2076 | to POSIX format into the destination buffer. */ | |
0ae534d2 | 2077 | cygwin_buf_t *pathbuf = (cygwin_buf_t *) alloca (exe_name_max_len * sizeof (cygwin_buf_t)); |
47f7ffdb JB |
2078 | |
2079 | len = GetModuleFileNameEx (current_process_handle, | |
2080 | dh_buf, pathbuf, exe_name_max_len); | |
2081 | if (len == 0) | |
2082 | error (_("Error getting executable filename: %u."), | |
2083 | (unsigned) GetLastError ()); | |
2084 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, exe_name_ret, | |
2085 | exe_name_max_len) < 0) | |
2086 | error (_("Error converting executable filename to POSIX: %d."), errno); | |
2087 | } | |
2088 | #else | |
2089 | len = GetModuleFileNameEx (current_process_handle, | |
2090 | dh_buf, exe_name_ret, exe_name_max_len); | |
2091 | if (len == 0) | |
2092 | error (_("Error getting executable filename: %u."), | |
2093 | (unsigned) GetLastError ()); | |
2094 | #endif | |
2095 | ||
2096 | return 1; /* success */ | |
2097 | } | |
2098 | ||
2099 | /* The pid_to_exec_file target_ops method for this platform. */ | |
2100 | ||
f6ac5f3d PA |
2101 | char * |
2102 | windows_nat_target::pid_to_exec_file (int pid) | |
47216e51 | 2103 | { |
b3c613f2 | 2104 | static char path[__PMAX]; |
10325bc5 | 2105 | #ifdef __CYGWIN__ |
581e13c1 | 2106 | /* Try to find exe name as symlink target of /proc/<pid>/exe. */ |
33605d39 CF |
2107 | int nchars; |
2108 | char procexe[sizeof ("/proc/4294967295/exe")]; | |
08850b56 PM |
2109 | |
2110 | xsnprintf (procexe, sizeof (procexe), "/proc/%u/exe", pid); | |
33605d39 CF |
2111 | nchars = readlink (procexe, path, sizeof(path)); |
2112 | if (nchars > 0 && nchars < sizeof (path)) | |
47216e51 | 2113 | { |
33605d39 CF |
2114 | path[nchars] = '\0'; /* Got it */ |
2115 | return path; | |
47216e51 | 2116 | } |
10325bc5 PA |
2117 | #endif |
2118 | ||
33605d39 | 2119 | /* If we get here then either Cygwin is hosed, this isn't a Cygwin version |
581e13c1 | 2120 | of gdb, or we're trying to debug a non-Cygwin windows executable. */ |
47f7ffdb | 2121 | if (!windows_get_exec_module_filename (path, sizeof (path))) |
33605d39 CF |
2122 | path[0] = '\0'; |
2123 | ||
2124 | return path; | |
47216e51 CV |
2125 | } |
2126 | ||
24e60978 SC |
2127 | /* Print status information about what we're accessing. */ |
2128 | ||
f6ac5f3d PA |
2129 | void |
2130 | windows_nat_target::files_info () | |
24e60978 | 2131 | { |
181e7f93 PA |
2132 | struct inferior *inf = current_inferior (); |
2133 | ||
24e60978 | 2134 | printf_unfiltered ("\tUsing the running image of %s %s.\n", |
181e7f93 | 2135 | inf->attach_flag ? "attached" : "child", |
a068643d | 2136 | target_pid_to_str (inferior_ptid).c_str ()); |
24e60978 SC |
2137 | } |
2138 | ||
cd44747c PM |
2139 | /* Modify CreateProcess parameters for use of a new separate console. |
2140 | Parameters are: | |
2141 | *FLAGS: DWORD parameter for general process creation flags. | |
2142 | *SI: STARTUPINFO structure, for which the console window size and | |
2143 | console buffer size is filled in if GDB is running in a console. | |
2144 | to create the new console. | |
2145 | The size of the used font is not available on all versions of | |
2146 | Windows OS. Furthermore, the current font might not be the default | |
2147 | font, but this is still better than before. | |
2148 | If the windows and buffer sizes are computed, | |
2149 | SI->DWFLAGS is changed so that this information is used | |
2150 | by CreateProcess function. */ | |
2151 | ||
2152 | static void | |
2153 | windows_set_console_info (STARTUPINFO *si, DWORD *flags) | |
2154 | { | |
2155 | HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE, | |
2156 | FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0); | |
2157 | ||
2158 | if (hconsole != INVALID_HANDLE_VALUE) | |
2159 | { | |
2160 | CONSOLE_SCREEN_BUFFER_INFO sbinfo; | |
2161 | COORD font_size; | |
2162 | CONSOLE_FONT_INFO cfi; | |
2163 | ||
2164 | GetCurrentConsoleFont (hconsole, FALSE, &cfi); | |
2165 | font_size = GetConsoleFontSize (hconsole, cfi.nFont); | |
2166 | GetConsoleScreenBufferInfo(hconsole, &sbinfo); | |
2167 | si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1; | |
2168 | si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1; | |
2169 | if (font_size.X) | |
2170 | si->dwXSize *= font_size.X; | |
2171 | else | |
2172 | si->dwXSize *= 8; | |
2173 | if (font_size.Y) | |
2174 | si->dwYSize *= font_size.Y; | |
2175 | else | |
2176 | si->dwYSize *= 12; | |
2177 | si->dwXCountChars = sbinfo.dwSize.X; | |
2178 | si->dwYCountChars = sbinfo.dwSize.Y; | |
2179 | si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS; | |
2180 | } | |
2181 | *flags |= CREATE_NEW_CONSOLE; | |
2182 | } | |
2183 | ||
c93dbcba EZ |
2184 | #ifndef __CYGWIN__ |
2185 | /* Function called by qsort to sort environment strings. */ | |
2186 | ||
2187 | static int | |
2188 | envvar_cmp (const void *a, const void *b) | |
2189 | { | |
2190 | const char **p = (const char **) a; | |
2191 | const char **q = (const char **) b; | |
2192 | return strcasecmp (*p, *q); | |
2193 | } | |
2194 | #endif | |
2195 | ||
b7ff339d CV |
2196 | #ifdef __CYGWIN__ |
2197 | static void | |
2198 | clear_win32_environment (char **env) | |
2199 | { | |
2200 | int i; | |
2201 | size_t len; | |
2202 | wchar_t *copy = NULL, *equalpos; | |
2203 | ||
2204 | for (i = 0; env[i] && *env[i]; i++) | |
2205 | { | |
2206 | len = mbstowcs (NULL, env[i], 0) + 1; | |
2207 | copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t)); | |
2208 | mbstowcs (copy, env[i], len); | |
2209 | equalpos = wcschr (copy, L'='); | |
2210 | if (equalpos) | |
dda83cd7 | 2211 | *equalpos = L'\0'; |
b7ff339d CV |
2212 | SetEnvironmentVariableW (copy, NULL); |
2213 | } | |
2214 | xfree (copy); | |
2215 | } | |
2216 | #endif | |
2217 | ||
8ba42bc5 EZ |
2218 | #ifndef __CYGWIN__ |
2219 | ||
2220 | /* Redirection of inferior I/O streams for native MS-Windows programs. | |
2221 | Unlike on Unix, where this is handled by invoking the inferior via | |
2222 | the shell, on MS-Windows we need to emulate the cmd.exe shell. | |
2223 | ||
2224 | The official documentation of the cmd.exe redirection features is here: | |
2225 | ||
2226 | http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx | |
2227 | ||
2228 | (That page talks about Windows XP, but there's no newer | |
2229 | documentation, so we assume later versions of cmd.exe didn't change | |
2230 | anything.) | |
2231 | ||
2232 | Caveat: the documentation on that page seems to include a few lies. | |
2233 | For example, it describes strange constructs 1<&2 and 2<&1, which | |
2234 | seem to work only when 1>&2 resp. 2>&1 would make sense, and so I | |
2235 | think the cmd.exe parser of the redirection symbols simply doesn't | |
2236 | care about the < vs > distinction in these cases. Therefore, the | |
2237 | supported features are explicitly documented below. | |
2238 | ||
2239 | The emulation below aims at supporting all the valid use cases | |
2240 | supported by cmd.exe, which include: | |
2241 | ||
2242 | < FILE redirect standard input from FILE | |
2243 | 0< FILE redirect standard input from FILE | |
2244 | <&N redirect standard input from file descriptor N | |
2245 | 0<&N redirect standard input from file descriptor N | |
2246 | > FILE redirect standard output to FILE | |
2247 | >> FILE append standard output to FILE | |
2248 | 1>> FILE append standard output to FILE | |
2249 | >&N redirect standard output to file descriptor N | |
2250 | 1>&N redirect standard output to file descriptor N | |
2251 | >>&N append standard output to file descriptor N | |
2252 | 1>>&N append standard output to file descriptor N | |
2253 | 2> FILE redirect standard error to FILE | |
2254 | 2>> FILE append standard error to FILE | |
2255 | 2>&N redirect standard error to file descriptor N | |
2256 | 2>>&N append standard error to file descriptor N | |
2257 | ||
2258 | Note that using N > 2 in the above construct is supported, but | |
2259 | requires that the corresponding file descriptor be open by some | |
2260 | means elsewhere or outside GDB. Also note that using ">&0" or | |
2261 | "<&2" will generally fail, because the file descriptor redirected | |
2262 | from is normally open in an incompatible mode (e.g., FD 0 is open | |
2263 | for reading only). IOW, use of such tricks is not recommended; | |
2264 | you are on your own. | |
2265 | ||
2266 | We do NOT support redirection of file descriptors above 2, as in | |
2267 | "3>SOME-FILE", because MinGW compiled programs don't (supporting | |
2268 | that needs special handling in the startup code that MinGW | |
2269 | doesn't have). Pipes are also not supported. | |
2270 | ||
2271 | As for invalid use cases, where the redirection contains some | |
2272 | error, the emulation below will detect that and produce some | |
2273 | error and/or failure. But the behavior in those cases is not | |
2274 | bug-for-bug compatible with what cmd.exe does in those cases. | |
2275 | That's because what cmd.exe does then is not well defined, and | |
2276 | seems to be a side effect of the cmd.exe parsing of the command | |
2277 | line more than anything else. For example, try redirecting to an | |
2278 | invalid file name, as in "> foo:bar". | |
2279 | ||
2280 | There are also minor syntactic deviations from what cmd.exe does | |
2281 | in some corner cases. For example, it doesn't support the likes | |
2282 | of "> &foo" to mean redirect to file named literally "&foo"; we | |
2283 | do support that here, because that, too, sounds like some issue | |
2284 | with the cmd.exe parser. Another nicety is that we support | |
2285 | redirection targets that use file names with forward slashes, | |
2286 | something cmd.exe doesn't -- this comes in handy since GDB | |
2287 | file-name completion can be used when typing the command line for | |
2288 | the inferior. */ | |
2289 | ||
2290 | /* Support routines for redirecting standard handles of the inferior. */ | |
2291 | ||
2292 | /* Parse a single redirection spec, open/duplicate the specified | |
2293 | file/fd, and assign the appropriate value to one of the 3 standard | |
2294 | file descriptors. */ | |
2295 | static int | |
2296 | redir_open (const char *redir_string, int *inp, int *out, int *err) | |
2297 | { | |
2298 | int *fd, ref_fd = -2; | |
2299 | int mode; | |
2300 | const char *fname = redir_string + 1; | |
2301 | int rc = *redir_string; | |
2302 | ||
2303 | switch (rc) | |
2304 | { | |
2305 | case '0': | |
2306 | fname++; | |
2307 | /* FALLTHROUGH */ | |
2308 | case '<': | |
2309 | fd = inp; | |
2310 | mode = O_RDONLY; | |
2311 | break; | |
2312 | case '1': case '2': | |
2313 | fname++; | |
2314 | /* FALLTHROUGH */ | |
2315 | case '>': | |
2316 | fd = (rc == '2') ? err : out; | |
2317 | mode = O_WRONLY | O_CREAT; | |
2318 | if (*fname == '>') | |
2319 | { | |
2320 | fname++; | |
2321 | mode |= O_APPEND; | |
2322 | } | |
2323 | else | |
2324 | mode |= O_TRUNC; | |
2325 | break; | |
2326 | default: | |
2327 | return -1; | |
2328 | } | |
2329 | ||
2330 | if (*fname == '&' && '0' <= fname[1] && fname[1] <= '9') | |
2331 | { | |
2332 | /* A reference to a file descriptor. */ | |
2333 | char *fdtail; | |
2334 | ref_fd = (int) strtol (fname + 1, &fdtail, 10); | |
2335 | if (fdtail > fname + 1 && *fdtail == '\0') | |
2336 | { | |
2337 | /* Don't allow redirection when open modes are incompatible. */ | |
2338 | if ((ref_fd == 0 && (fd == out || fd == err)) | |
2339 | || ((ref_fd == 1 || ref_fd == 2) && fd == inp)) | |
2340 | { | |
2341 | errno = EPERM; | |
2342 | return -1; | |
2343 | } | |
2344 | if (ref_fd == 0) | |
2345 | ref_fd = *inp; | |
2346 | else if (ref_fd == 1) | |
2347 | ref_fd = *out; | |
2348 | else if (ref_fd == 2) | |
2349 | ref_fd = *err; | |
2350 | } | |
2351 | else | |
2352 | { | |
2353 | errno = EBADF; | |
2354 | return -1; | |
2355 | } | |
2356 | } | |
2357 | else | |
2358 | fname++; /* skip the separator space */ | |
2359 | /* If the descriptor is already open, close it. This allows | |
2360 | multiple specs of redirections for the same stream, which is | |
2361 | somewhat nonsensical, but still valid and supported by cmd.exe. | |
2362 | (But cmd.exe only opens a single file in this case, the one | |
2363 | specified by the last redirection spec on the command line.) */ | |
2364 | if (*fd >= 0) | |
2365 | _close (*fd); | |
2366 | if (ref_fd == -2) | |
2367 | { | |
2368 | *fd = _open (fname, mode, _S_IREAD | _S_IWRITE); | |
2369 | if (*fd < 0) | |
2370 | return -1; | |
2371 | } | |
2372 | else if (ref_fd == -1) | |
2373 | *fd = -1; /* reset to default destination */ | |
2374 | else | |
2375 | { | |
2376 | *fd = _dup (ref_fd); | |
2377 | if (*fd < 0) | |
2378 | return -1; | |
2379 | } | |
2380 | /* _open just sets a flag for O_APPEND, which won't be passed to the | |
2381 | inferior, so we need to actually move the file pointer. */ | |
2382 | if ((mode & O_APPEND) != 0) | |
2383 | _lseek (*fd, 0L, SEEK_END); | |
2384 | return 0; | |
2385 | } | |
2386 | ||
2387 | /* Canonicalize a single redirection spec and set up the corresponding | |
2388 | file descriptor as specified. */ | |
2389 | static int | |
2390 | redir_set_redirection (const char *s, int *inp, int *out, int *err) | |
2391 | { | |
2392 | char buf[__PMAX + 2 + 5]; /* extra space for quotes & redirection string */ | |
2393 | char *d = buf; | |
2394 | const char *start = s; | |
2395 | int quote = 0; | |
2396 | ||
2397 | *d++ = *s++; /* copy the 1st character, < or > or a digit */ | |
2398 | if ((*start == '>' || *start == '1' || *start == '2') | |
2399 | && *s == '>') | |
2400 | { | |
2401 | *d++ = *s++; | |
2402 | if (*s == '>' && *start != '>') | |
2403 | *d++ = *s++; | |
2404 | } | |
2405 | else if (*start == '0' && *s == '<') | |
2406 | *d++ = *s++; | |
2407 | /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */ | |
2408 | if (*s != '&') | |
2409 | { | |
2410 | while (isspace (*s)) /* skip whitespace before file name */ | |
2411 | s++; | |
2412 | *d++ = ' '; /* separate file name with a single space */ | |
2413 | } | |
2414 | ||
2415 | /* Copy the file name. */ | |
2416 | while (*s) | |
2417 | { | |
2418 | /* Remove quoting characters from the file name in buf[]. */ | |
2419 | if (*s == '"') /* could support '..' quoting here */ | |
2420 | { | |
2421 | if (!quote) | |
2422 | quote = *s++; | |
2423 | else if (*s == quote) | |
2424 | { | |
2425 | quote = 0; | |
2426 | s++; | |
2427 | } | |
2428 | else | |
2429 | *d++ = *s++; | |
2430 | } | |
2431 | else if (*s == '\\') | |
2432 | { | |
2433 | if (s[1] == '"') /* could support '..' here */ | |
2434 | s++; | |
2435 | *d++ = *s++; | |
2436 | } | |
2437 | else if (isspace (*s) && !quote) | |
2438 | break; | |
2439 | else | |
2440 | *d++ = *s++; | |
2441 | if (d - buf >= sizeof (buf) - 1) | |
2442 | { | |
2443 | errno = ENAMETOOLONG; | |
2444 | return 0; | |
2445 | } | |
2446 | } | |
2447 | *d = '\0'; | |
2448 | ||
2449 | /* Windows doesn't allow redirection characters in file names, so we | |
2450 | can bail out early if they use them, or if there's no target file | |
2451 | name after the redirection symbol. */ | |
2452 | if (d[-1] == '>' || d[-1] == '<') | |
2453 | { | |
2454 | errno = ENOENT; | |
2455 | return 0; | |
2456 | } | |
2457 | if (redir_open (buf, inp, out, err) == 0) | |
2458 | return s - start; | |
2459 | return 0; | |
2460 | } | |
2461 | ||
2462 | /* Parse the command line for redirection specs and prepare the file | |
2463 | descriptors for the 3 standard streams accordingly. */ | |
2464 | static bool | |
2465 | redirect_inferior_handles (const char *cmd_orig, char *cmd, | |
2466 | int *inp, int *out, int *err) | |
2467 | { | |
2468 | const char *s = cmd_orig; | |
2469 | char *d = cmd; | |
2470 | int quote = 0; | |
2471 | bool retval = false; | |
2472 | ||
2473 | while (isspace (*s)) | |
2474 | *d++ = *s++; | |
2475 | ||
2476 | while (*s) | |
2477 | { | |
2478 | if (*s == '"') /* could also support '..' quoting here */ | |
2479 | { | |
2480 | if (!quote) | |
2481 | quote = *s; | |
2482 | else if (*s == quote) | |
2483 | quote = 0; | |
2484 | } | |
2485 | else if (*s == '\\') | |
2486 | { | |
2487 | if (s[1] == '"') /* escaped quote char */ | |
2488 | s++; | |
2489 | } | |
2490 | else if (!quote) | |
2491 | { | |
2492 | /* Process a single redirection candidate. */ | |
2493 | if (*s == '<' || *s == '>' | |
2494 | || ((*s == '1' || *s == '2') && s[1] == '>') | |
2495 | || (*s == '0' && s[1] == '<')) | |
2496 | { | |
2497 | int skip = redir_set_redirection (s, inp, out, err); | |
2498 | ||
2499 | if (skip <= 0) | |
2500 | return false; | |
2501 | retval = true; | |
2502 | s += skip; | |
2503 | } | |
2504 | } | |
2505 | if (*s) | |
2506 | *d++ = *s++; | |
2507 | } | |
2508 | *d = '\0'; | |
2509 | return retval; | |
2510 | } | |
2511 | #endif /* !__CYGWIN__ */ | |
2512 | ||
dc05df57 | 2513 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
2514 | EXEC_FILE is the file to run. |
2515 | ALLARGS is a string containing the arguments to the program. | |
2516 | ENV is the environment vector to pass. Errors reported with error(). */ | |
2517 | ||
f6ac5f3d PA |
2518 | void |
2519 | windows_nat_target::create_inferior (const char *exec_file, | |
2520 | const std::string &origallargs, | |
2521 | char **in_env, int from_tty) | |
24e60978 | 2522 | { |
b3c613f2 | 2523 | STARTUPINFO si; |
41b4aadc | 2524 | #ifdef __CYGWIN__ |
b3c613f2 CF |
2525 | cygwin_buf_t real_path[__PMAX]; |
2526 | cygwin_buf_t shell[__PMAX]; /* Path to shell */ | |
d092c5a2 | 2527 | cygwin_buf_t infcwd[__PMAX]; |
d0d0ab16 | 2528 | const char *sh; |
b3c613f2 CF |
2529 | cygwin_buf_t *toexec; |
2530 | cygwin_buf_t *cygallargs; | |
2531 | cygwin_buf_t *args; | |
b7ff339d CV |
2532 | char **old_env = NULL; |
2533 | PWCHAR w32_env; | |
d0d0ab16 | 2534 | size_t len; |
2becadee CF |
2535 | int tty; |
2536 | int ostdin, ostdout, ostderr; | |
8ba42bc5 | 2537 | #else /* !__CYGWIN__ */ |
b3c613f2 | 2538 | char shell[__PMAX]; /* Path to shell */ |
5430098f | 2539 | const char *toexec; |
8ba42bc5 EZ |
2540 | char *args, *allargs_copy; |
2541 | size_t args_len, allargs_len; | |
2542 | int fd_inp = -1, fd_out = -1, fd_err = -1; | |
2543 | HANDLE tty = INVALID_HANDLE_VALUE; | |
8ba42bc5 | 2544 | bool redirected = false; |
c93dbcba EZ |
2545 | char *w32env; |
2546 | char *temp; | |
2547 | size_t envlen; | |
2548 | int i; | |
2549 | size_t envsize; | |
2550 | char **env; | |
8ba42bc5 | 2551 | #endif /* !__CYGWIN__ */ |
096c92dd | 2552 | const char *allargs = origallargs.c_str (); |
d0d0ab16 CV |
2553 | PROCESS_INFORMATION pi; |
2554 | BOOL ret; | |
2555 | DWORD flags = 0; | |
05779d57 | 2556 | const char *inferior_tty = current_inferior ()->tty (); |
24e60978 SC |
2557 | |
2558 | if (!exec_file) | |
8a3fe4f8 | 2559 | error (_("No executable specified, use `target exec'.")); |
24e60978 | 2560 | |
d092c5a2 SDJ |
2561 | const char *inferior_cwd = get_inferior_cwd (); |
2562 | std::string expanded_infcwd; | |
2563 | if (inferior_cwd != NULL) | |
2564 | { | |
2565 | expanded_infcwd = gdb_tilde_expand (inferior_cwd); | |
2566 | /* Mirror slashes on inferior's cwd. */ | |
2567 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), | |
2568 | '/', '\\'); | |
2569 | inferior_cwd = expanded_infcwd.c_str (); | |
2570 | } | |
2571 | ||
24e60978 SC |
2572 | memset (&si, 0, sizeof (si)); |
2573 | si.cb = sizeof (si); | |
2574 | ||
d0d0ab16 CV |
2575 | if (new_group) |
2576 | flags |= CREATE_NEW_PROCESS_GROUP; | |
2577 | ||
2578 | if (new_console) | |
cd44747c | 2579 | windows_set_console_info (&si, &flags); |
d0d0ab16 | 2580 | |
10325bc5 | 2581 | #ifdef __CYGWIN__ |
349b409f | 2582 | if (!useshell) |
dfe7f3ac | 2583 | { |
d0d0ab16 CV |
2584 | flags |= DEBUG_ONLY_THIS_PROCESS; |
2585 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path, | |
b3c613f2 | 2586 | __PMAX * sizeof (cygwin_buf_t)) < 0) |
d0d0ab16 | 2587 | error (_("Error starting executable: %d"), errno); |
dfe7f3ac | 2588 | toexec = real_path; |
b3c613f2 | 2589 | #ifdef __USEWIDE |
d0d0ab16 CV |
2590 | len = mbstowcs (NULL, allargs, 0) + 1; |
2591 | if (len == (size_t) -1) | |
2592 | error (_("Error starting executable: %d"), errno); | |
2593 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2594 | mbstowcs (cygallargs, allargs, len); | |
8ba42bc5 | 2595 | #else /* !__USEWIDE */ |
60c5c021 | 2596 | cygallargs = allargs; |
b3c613f2 | 2597 | #endif |
dfe7f3ac CF |
2598 | } |
2599 | else | |
2600 | { | |
974e6844 | 2601 | sh = get_shell (); |
b3c613f2 | 2602 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0) |
24b21115 | 2603 | error (_("Error starting executable via shell: %d"), errno); |
b3c613f2 | 2604 | #ifdef __USEWIDE |
d0d0ab16 CV |
2605 | len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0) |
2606 | + mbstowcs (NULL, allargs, 0) + 2; | |
2607 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2608 | swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs); | |
8ba42bc5 | 2609 | #else /* !__USEWIDE */ |
08850b56 PM |
2610 | len = (sizeof (" -c 'exec '") + strlen (exec_file) |
2611 | + strlen (allargs) + 2); | |
2612 | cygallargs = (char *) alloca (len); | |
2613 | xsnprintf (cygallargs, len, " -c 'exec %s %s'", exec_file, allargs); | |
8ba42bc5 | 2614 | #endif /* __USEWIDE */ |
dfe7f3ac | 2615 | toexec = shell; |
d0d0ab16 | 2616 | flags |= DEBUG_PROCESS; |
dfe7f3ac | 2617 | } |
b3c613f2 | 2618 | |
d092c5a2 SDJ |
2619 | if (inferior_cwd != NULL |
2620 | && cygwin_conv_path (CCP_POSIX_TO_WIN_W, inferior_cwd, | |
2621 | infcwd, strlen (inferior_cwd)) < 0) | |
2622 | error (_("Error converting inferior cwd: %d"), errno); | |
2623 | ||
b3c613f2 CF |
2624 | #ifdef __USEWIDE |
2625 | args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2) | |
2626 | * sizeof (wchar_t)); | |
d0d0ab16 CV |
2627 | wcscpy (args, toexec); |
2628 | wcscat (args, L" "); | |
2629 | wcscat (args, cygallargs); | |
8ba42bc5 | 2630 | #else /* !__USEWIDE */ |
b3c613f2 CF |
2631 | args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2); |
2632 | strcpy (args, toexec); | |
2633 | strcat (args, " "); | |
2634 | strcat (args, cygallargs); | |
8ba42bc5 | 2635 | #endif /* !__USEWIDE */ |
b3c613f2 | 2636 | |
b7ff339d CV |
2637 | #ifdef CW_CVT_ENV_TO_WINENV |
2638 | /* First try to create a direct Win32 copy of the POSIX environment. */ | |
2639 | w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env); | |
2640 | if (w32_env != (PWCHAR) -1) | |
2641 | flags |= CREATE_UNICODE_ENVIRONMENT; | |
2642 | else | |
2643 | /* If that fails, fall back to old method tweaking GDB's environment. */ | |
8ba42bc5 | 2644 | #endif /* CW_CVT_ENV_TO_WINENV */ |
b7ff339d CV |
2645 | { |
2646 | /* Reset all Win32 environment variables to avoid leftover on next run. */ | |
2647 | clear_win32_environment (environ); | |
2648 | /* Prepare the environment vars for CreateProcess. */ | |
2649 | old_env = environ; | |
2650 | environ = in_env; | |
2651 | cygwin_internal (CW_SYNC_WINENV); | |
2652 | w32_env = NULL; | |
2653 | } | |
1750a5ef | 2654 | |
05779d57 | 2655 | if (inferior_tty == nullptr) |
2becadee CF |
2656 | tty = ostdin = ostdout = ostderr = -1; |
2657 | else | |
2658 | { | |
05779d57 | 2659 | tty = open (inferior_tty, O_RDWR | O_NOCTTY); |
2becadee CF |
2660 | if (tty < 0) |
2661 | { | |
05779d57 | 2662 | print_sys_errmsg (inferior_tty, errno); |
2becadee CF |
2663 | ostdin = ostdout = ostderr = -1; |
2664 | } | |
2665 | else | |
2666 | { | |
2667 | ostdin = dup (0); | |
2668 | ostdout = dup (1); | |
2669 | ostderr = dup (2); | |
2670 | dup2 (tty, 0); | |
2671 | dup2 (tty, 1); | |
2672 | dup2 (tty, 2); | |
2673 | } | |
2674 | } | |
d0d0ab16 CV |
2675 | |
2676 | windows_init_thread_list (); | |
b3c613f2 CF |
2677 | ret = CreateProcess (0, |
2678 | args, /* command line */ | |
2679 | NULL, /* Security */ | |
2680 | NULL, /* thread */ | |
2681 | TRUE, /* inherit handles */ | |
2682 | flags, /* start flags */ | |
b7ff339d | 2683 | w32_env, /* environment */ |
d092c5a2 SDJ |
2684 | inferior_cwd != NULL ? infcwd : NULL, /* current |
2685 | directory */ | |
b3c613f2 CF |
2686 | &si, |
2687 | &pi); | |
b7ff339d CV |
2688 | if (w32_env) |
2689 | /* Just free the Win32 environment, if it could be created. */ | |
2690 | free (w32_env); | |
2691 | else | |
2692 | { | |
2693 | /* Reset all environment variables to avoid leftover on next run. */ | |
2694 | clear_win32_environment (in_env); | |
2695 | /* Restore normal GDB environment variables. */ | |
2696 | environ = old_env; | |
2697 | cygwin_internal (CW_SYNC_WINENV); | |
2698 | } | |
2699 | ||
d0d0ab16 CV |
2700 | if (tty >= 0) |
2701 | { | |
6af79d7b | 2702 | ::close (tty); |
d0d0ab16 CV |
2703 | dup2 (ostdin, 0); |
2704 | dup2 (ostdout, 1); | |
2705 | dup2 (ostderr, 2); | |
6af79d7b JT |
2706 | ::close (ostdin); |
2707 | ::close (ostdout); | |
2708 | ::close (ostderr); | |
d0d0ab16 | 2709 | } |
8ba42bc5 EZ |
2710 | #else /* !__CYGWIN__ */ |
2711 | allargs_len = strlen (allargs); | |
2712 | allargs_copy = strcpy ((char *) alloca (allargs_len + 1), allargs); | |
2713 | if (strpbrk (allargs_copy, "<>") != NULL) | |
2714 | { | |
2715 | int e = errno; | |
2716 | errno = 0; | |
2717 | redirected = | |
2718 | redirect_inferior_handles (allargs, allargs_copy, | |
2719 | &fd_inp, &fd_out, &fd_err); | |
2720 | if (errno) | |
6d91ce9a | 2721 | warning (_("Error in redirection: %s."), safe_strerror (errno)); |
8ba42bc5 EZ |
2722 | else |
2723 | errno = e; | |
2724 | allargs_len = strlen (allargs_copy); | |
2725 | } | |
2726 | /* If not all the standard streams are redirected by the command | |
05779d57 PA |
2727 | line, use INFERIOR_TTY for those which aren't. */ |
2728 | if (inferior_tty != nullptr | |
8ba42bc5 | 2729 | && !(fd_inp >= 0 && fd_out >= 0 && fd_err >= 0)) |
41b4aadc CF |
2730 | { |
2731 | SECURITY_ATTRIBUTES sa; | |
2732 | sa.nLength = sizeof(sa); | |
2733 | sa.lpSecurityDescriptor = 0; | |
2734 | sa.bInheritHandle = TRUE; | |
05779d57 | 2735 | tty = CreateFileA (inferior_tty, GENERIC_READ | GENERIC_WRITE, |
41b4aadc CF |
2736 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); |
2737 | if (tty == INVALID_HANDLE_VALUE) | |
2738 | warning (_("Warning: Failed to open TTY %s, error %#x."), | |
05779d57 | 2739 | inferior_tty, (unsigned) GetLastError ()); |
8ba42bc5 EZ |
2740 | } |
2741 | if (redirected || tty != INVALID_HANDLE_VALUE) | |
2742 | { | |
2743 | if (fd_inp >= 0) | |
2744 | si.hStdInput = (HANDLE) _get_osfhandle (fd_inp); | |
2745 | else if (tty != INVALID_HANDLE_VALUE) | |
2746 | si.hStdInput = tty; | |
41b4aadc | 2747 | else |
8ba42bc5 EZ |
2748 | si.hStdInput = GetStdHandle (STD_INPUT_HANDLE); |
2749 | if (fd_out >= 0) | |
2750 | si.hStdOutput = (HANDLE) _get_osfhandle (fd_out); | |
2751 | else if (tty != INVALID_HANDLE_VALUE) | |
2752 | si.hStdOutput = tty; | |
2753 | else | |
2754 | si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
2755 | if (fd_err >= 0) | |
2756 | si.hStdError = (HANDLE) _get_osfhandle (fd_err); | |
2757 | else if (tty != INVALID_HANDLE_VALUE) | |
2758 | si.hStdError = tty; | |
2759 | else | |
2760 | si.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
2761 | si.dwFlags |= STARTF_USESTDHANDLES; | |
41b4aadc | 2762 | } |
2becadee | 2763 | |
8ba42bc5 EZ |
2764 | toexec = exec_file; |
2765 | /* Build the command line, a space-separated list of tokens where | |
2766 | the first token is the name of the module to be executed. | |
2767 | To avoid ambiguities introduced by spaces in the module name, | |
2768 | we quote it. */ | |
2769 | args_len = strlen (toexec) + 2 /* quotes */ + allargs_len + 2; | |
2770 | args = (char *) alloca (args_len); | |
2771 | xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs_copy); | |
2772 | ||
2773 | flags |= DEBUG_ONLY_THIS_PROCESS; | |
2774 | ||
c93dbcba EZ |
2775 | /* CreateProcess takes the environment list as a null terminated set of |
2776 | strings (i.e. two nulls terminate the list). */ | |
2777 | ||
2778 | /* Get total size for env strings. */ | |
2779 | for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++) | |
2780 | envlen += strlen (in_env[i]) + 1; | |
2781 | ||
2782 | envsize = sizeof (in_env[0]) * (i + 1); | |
2783 | env = (char **) alloca (envsize); | |
2784 | memcpy (env, in_env, envsize); | |
2785 | /* Windows programs expect the environment block to be sorted. */ | |
2786 | qsort (env, i, sizeof (char *), envvar_cmp); | |
2787 | ||
0ae1c716 | 2788 | w32env = (char *) alloca (envlen + 1); |
c93dbcba EZ |
2789 | |
2790 | /* Copy env strings into new buffer. */ | |
2791 | for (temp = w32env, i = 0; env[i] && *env[i]; i++) | |
2792 | { | |
2793 | strcpy (temp, env[i]); | |
2794 | temp += strlen (temp) + 1; | |
2795 | } | |
2796 | ||
2797 | /* Final nil string to terminate new env. */ | |
2798 | *temp = 0; | |
2799 | ||
dc05df57 | 2800 | windows_init_thread_list (); |
d0d0ab16 CV |
2801 | ret = CreateProcessA (0, |
2802 | args, /* command line */ | |
2803 | NULL, /* Security */ | |
2804 | NULL, /* thread */ | |
2805 | TRUE, /* inherit handles */ | |
2806 | flags, /* start flags */ | |
c93dbcba | 2807 | w32env, /* environment */ |
d092c5a2 | 2808 | inferior_cwd, /* current directory */ |
d0d0ab16 CV |
2809 | &si, |
2810 | &pi); | |
41b4aadc CF |
2811 | if (tty != INVALID_HANDLE_VALUE) |
2812 | CloseHandle (tty); | |
8ba42bc5 EZ |
2813 | if (fd_inp >= 0) |
2814 | _close (fd_inp); | |
2815 | if (fd_out >= 0) | |
2816 | _close (fd_out); | |
2817 | if (fd_err >= 0) | |
2818 | _close (fd_err); | |
2819 | #endif /* !__CYGWIN__ */ | |
2becadee | 2820 | |
24e60978 | 2821 | if (!ret) |
d50a0ce2 | 2822 | error (_("Error creating process %s, (error %u)."), |
8a3fe4f8 | 2823 | exec_file, (unsigned) GetLastError ()); |
24e60978 | 2824 | |
46f9f931 HD |
2825 | #ifdef __x86_64__ |
2826 | BOOL wow64; | |
2827 | if (IsWow64Process (pi.hProcess, &wow64)) | |
2828 | wow64_process = wow64; | |
2829 | #endif | |
2830 | ||
c1766e7d PM |
2831 | CloseHandle (pi.hThread); |
2832 | CloseHandle (pi.hProcess); | |
2833 | ||
dfe7f3ac CF |
2834 | if (useshell && shell[0] != '\0') |
2835 | saw_create = -1; | |
2836 | else | |
2837 | saw_create = 0; | |
2838 | ||
50838d1b | 2839 | do_initial_windows_stuff (pi.dwProcessId, 0); |
d3a09475 | 2840 | |
17617f2d | 2841 | /* windows_continue (DBG_CONTINUE, -1, 0); */ |
24e60978 SC |
2842 | } |
2843 | ||
f6ac5f3d PA |
2844 | void |
2845 | windows_nat_target::mourn_inferior () | |
24e60978 | 2846 | { |
17617f2d | 2847 | (void) windows_continue (DBG_CONTINUE, -1, 0); |
df7e5265 | 2848 | x86_cleanup_dregs(); |
bf25528d CF |
2849 | if (open_process_used) |
2850 | { | |
2851 | CHECK (CloseHandle (current_process_handle)); | |
2852 | open_process_used = 0; | |
2853 | } | |
7928d571 | 2854 | siginfo_er.ExceptionCode = 0; |
f6ac5f3d | 2855 | inf_child_target::mourn_inferior (); |
24e60978 SC |
2856 | } |
2857 | ||
24e60978 | 2858 | /* Send a SIGINT to the process group. This acts just like the user typed a |
581e13c1 | 2859 | ^C on the controlling terminal. */ |
24e60978 | 2860 | |
f6ac5f3d PA |
2861 | void |
2862 | windows_nat_target::interrupt () | |
24e60978 | 2863 | { |
4ef367bf | 2864 | DEBUG_EVENTS ("GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)"); |
1e37c281 | 2865 | CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId)); |
3a4b77d8 | 2866 | registers_changed (); /* refresh register state */ |
24e60978 SC |
2867 | } |
2868 | ||
44f38867 PA |
2869 | /* Helper for windows_xfer_partial that handles memory transfers. |
2870 | Arguments are like target_xfer_partial. */ | |
2871 | ||
9b409511 | 2872 | static enum target_xfer_status |
44f38867 | 2873 | windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2874 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) |
24e60978 | 2875 | { |
5732a500 | 2876 | SIZE_T done = 0; |
44f38867 | 2877 | BOOL success; |
9e52adf9 | 2878 | DWORD lasterror = 0; |
44f38867 PA |
2879 | |
2880 | if (writebuf != NULL) | |
24e60978 | 2881 | { |
4ef367bf TT |
2882 | DEBUG_MEM ("write target memory, %s bytes at %s", |
2883 | pulongest (len), core_addr_to_string (memaddr)); | |
44f38867 PA |
2884 | success = WriteProcessMemory (current_process_handle, |
2885 | (LPVOID) (uintptr_t) memaddr, writebuf, | |
2886 | len, &done); | |
9e52adf9 | 2887 | if (!success) |
7126d5c8 | 2888 | lasterror = GetLastError (); |
2b008701 | 2889 | FlushInstructionCache (current_process_handle, |
2c647436 | 2890 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
2891 | } |
2892 | else | |
2893 | { | |
4ef367bf TT |
2894 | DEBUG_MEM ("read target memory, %s bytes at %s", |
2895 | pulongest (len), core_addr_to_string (memaddr)); | |
44f38867 PA |
2896 | success = ReadProcessMemory (current_process_handle, |
2897 | (LPCVOID) (uintptr_t) memaddr, readbuf, | |
2898 | len, &done); | |
9e52adf9 | 2899 | if (!success) |
7126d5c8 | 2900 | lasterror = GetLastError (); |
24e60978 | 2901 | } |
9b409511 | 2902 | *xfered_len = (ULONGEST) done; |
9e52adf9 | 2903 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
9b409511 | 2904 | return TARGET_XFER_OK; |
9e52adf9 | 2905 | else |
9b409511 | 2906 | return success ? TARGET_XFER_OK : TARGET_XFER_E_IO; |
24e60978 SC |
2907 | } |
2908 | ||
f6ac5f3d PA |
2909 | void |
2910 | windows_nat_target::kill () | |
24e60978 | 2911 | { |
3cee93ac CF |
2912 | CHECK (TerminateProcess (current_process_handle, 0)); |
2913 | ||
b5edcb45 ILT |
2914 | for (;;) |
2915 | { | |
17617f2d | 2916 | if (!windows_continue (DBG_CONTINUE, -1, 1)) |
b5edcb45 | 2917 | break; |
0a4afda3 | 2918 | if (!wait_for_debug_event (¤t_event, INFINITE)) |
b5edcb45 | 2919 | break; |
3cee93ac | 2920 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
b5edcb45 ILT |
2921 | break; |
2922 | } | |
2923 | ||
9eee20eb | 2924 | target_mourn_inferior (inferior_ptid); /* Or just windows_mourn_inferior? */ |
24e60978 SC |
2925 | } |
2926 | ||
f6ac5f3d PA |
2927 | void |
2928 | windows_nat_target::close () | |
24e60978 | 2929 | { |
4ef367bf | 2930 | DEBUG_EVENTS ("inferior_ptid=%d\n", inferior_ptid.pid ()); |
24e60978 | 2931 | } |
1ef980b9 | 2932 | |
581e13c1 | 2933 | /* Convert pid to printable format. */ |
a068643d | 2934 | std::string |
f6ac5f3d | 2935 | windows_nat_target::pid_to_str (ptid_t ptid) |
24e60978 | 2936 | { |
7c7411bc TT |
2937 | if (ptid.lwp () != 0) |
2938 | return string_printf ("Thread %d.0x%lx", ptid.pid (), ptid.lwp ()); | |
2dc38344 PA |
2939 | |
2940 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2941 | } |
2942 | ||
9b409511 | 2943 | static enum target_xfer_status |
dc05df57 | 2944 | windows_xfer_shared_libraries (struct target_ops *ops, |
9b409511 YQ |
2945 | enum target_object object, const char *annex, |
2946 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2947 | ULONGEST offset, ULONGEST len, | |
2948 | ULONGEST *xfered_len) | |
3cb8e7f6 | 2949 | { |
de1b3c3d PA |
2950 | struct obstack obstack; |
2951 | const char *buf; | |
2952 | LONGEST len_avail; | |
3cb8e7f6 | 2953 | struct so_list *so; |
3cb8e7f6 | 2954 | |
de1b3c3d | 2955 | if (writebuf) |
2ed4b548 | 2956 | return TARGET_XFER_E_IO; |
3cb8e7f6 | 2957 | |
de1b3c3d PA |
2958 | obstack_init (&obstack); |
2959 | obstack_grow_str (&obstack, "<library-list>\n"); | |
2960 | for (so = solib_start.next; so; so = so->next) | |
d0e449a1 SM |
2961 | { |
2962 | lm_info_windows *li = (lm_info_windows *) so->lm_info; | |
2963 | ||
2964 | windows_xfer_shared_library (so->so_name, (CORE_ADDR) | |
2965 | (uintptr_t) li->load_addr, | |
c162ed3e | 2966 | &li->text_offset, |
d0e449a1 SM |
2967 | target_gdbarch (), &obstack); |
2968 | } | |
de1b3c3d | 2969 | obstack_grow_str0 (&obstack, "</library-list>\n"); |
3cb8e7f6 | 2970 | |
0ae1c716 | 2971 | buf = (const char *) obstack_finish (&obstack); |
de1b3c3d PA |
2972 | len_avail = strlen (buf); |
2973 | if (offset >= len_avail) | |
49dc7f4b PM |
2974 | len= 0; |
2975 | else | |
2976 | { | |
2977 | if (len > len_avail - offset) | |
2978 | len = len_avail - offset; | |
2979 | memcpy (readbuf, buf + offset, len); | |
2980 | } | |
3cb8e7f6 | 2981 | |
de1b3c3d | 2982 | obstack_free (&obstack, NULL); |
9b409511 | 2983 | *xfered_len = (ULONGEST) len; |
0837c976 | 2984 | return len != 0 ? TARGET_XFER_OK : TARGET_XFER_EOF; |
3cb8e7f6 CF |
2985 | } |
2986 | ||
7928d571 HD |
2987 | /* Helper for windows_nat_target::xfer_partial that handles signal info. */ |
2988 | ||
2989 | static enum target_xfer_status | |
2990 | windows_xfer_siginfo (gdb_byte *readbuf, ULONGEST offset, ULONGEST len, | |
2991 | ULONGEST *xfered_len) | |
2992 | { | |
46f9f931 HD |
2993 | char *buf = (char *) &siginfo_er; |
2994 | size_t bufsize = sizeof (siginfo_er); | |
2995 | ||
2996 | #ifdef __x86_64__ | |
2997 | EXCEPTION_RECORD32 er32; | |
2998 | if (wow64_process) | |
2999 | { | |
3000 | buf = (char *) &er32; | |
3001 | bufsize = sizeof (er32); | |
3002 | ||
3003 | er32.ExceptionCode = siginfo_er.ExceptionCode; | |
3004 | er32.ExceptionFlags = siginfo_er.ExceptionFlags; | |
3005 | er32.ExceptionRecord = (uintptr_t) siginfo_er.ExceptionRecord; | |
3006 | er32.ExceptionAddress = (uintptr_t) siginfo_er.ExceptionAddress; | |
3007 | er32.NumberParameters = siginfo_er.NumberParameters; | |
3008 | int i; | |
3009 | for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++) | |
3010 | er32.ExceptionInformation[i] = siginfo_er.ExceptionInformation[i]; | |
3011 | } | |
3012 | #endif | |
3013 | ||
7928d571 HD |
3014 | if (siginfo_er.ExceptionCode == 0) |
3015 | return TARGET_XFER_E_IO; | |
3016 | ||
3017 | if (readbuf == nullptr) | |
3018 | return TARGET_XFER_E_IO; | |
3019 | ||
46f9f931 | 3020 | if (offset > bufsize) |
7928d571 HD |
3021 | return TARGET_XFER_E_IO; |
3022 | ||
46f9f931 HD |
3023 | if (offset + len > bufsize) |
3024 | len = bufsize - offset; | |
7928d571 | 3025 | |
46f9f931 | 3026 | memcpy (readbuf, buf + offset, len); |
7928d571 HD |
3027 | *xfered_len = len; |
3028 | ||
3029 | return TARGET_XFER_OK; | |
3030 | } | |
3031 | ||
f6ac5f3d PA |
3032 | enum target_xfer_status |
3033 | windows_nat_target::xfer_partial (enum target_object object, | |
3034 | const char *annex, gdb_byte *readbuf, | |
2f4f025f TT |
3035 | const gdb_byte *writebuf, ULONGEST offset, |
3036 | ULONGEST len, ULONGEST *xfered_len) | |
3cb8e7f6 | 3037 | { |
de1b3c3d | 3038 | switch (object) |
3cb8e7f6 | 3039 | { |
de1b3c3d | 3040 | case TARGET_OBJECT_MEMORY: |
9b409511 | 3041 | return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
de1b3c3d PA |
3042 | |
3043 | case TARGET_OBJECT_LIBRARIES: | |
f6ac5f3d | 3044 | return windows_xfer_shared_libraries (this, object, annex, readbuf, |
9b409511 | 3045 | writebuf, offset, len, xfered_len); |
3929abe9 | 3046 | |
7928d571 HD |
3047 | case TARGET_OBJECT_SIGNAL_INFO: |
3048 | return windows_xfer_siginfo (readbuf, offset, len, xfered_len); | |
3049 | ||
de1b3c3d | 3050 | default: |
2f4f025f | 3051 | if (beneath () == NULL) |
178d6a63 JB |
3052 | { |
3053 | /* This can happen when requesting the transfer of unsupported | |
3054 | objects before a program has been started (and therefore | |
3055 | with the current_target having no target beneath). */ | |
3056 | return TARGET_XFER_E_IO; | |
3057 | } | |
2f4f025f TT |
3058 | return beneath ()->xfer_partial (object, annex, |
3059 | readbuf, writebuf, offset, len, | |
3060 | xfered_len); | |
3929abe9 | 3061 | } |
02c5aecd CF |
3062 | } |
3063 | ||
711e434b PM |
3064 | /* Provide thread local base, i.e. Thread Information Block address. |
3065 | Returns 1 if ptid is found and sets *ADDR to thread_local_base. */ | |
3066 | ||
57810aa7 | 3067 | bool |
f6ac5f3d | 3068 | windows_nat_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 3069 | { |
876d1cd7 | 3070 | windows_thread_info *th; |
711e434b | 3071 | |
28688adf | 3072 | th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT); |
711e434b | 3073 | if (th == NULL) |
57810aa7 | 3074 | return false; |
711e434b PM |
3075 | |
3076 | if (addr != NULL) | |
3077 | *addr = th->thread_local_base; | |
3078 | ||
57810aa7 | 3079 | return true; |
711e434b PM |
3080 | } |
3081 | ||
f6ac5f3d PA |
3082 | ptid_t |
3083 | windows_nat_target::get_ada_task_ptid (long lwp, long thread) | |
1e2f1c5c | 3084 | { |
7c7411bc | 3085 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
1e2f1c5c JB |
3086 | } |
3087 | ||
24cdb46e РИ |
3088 | /* Implementation of the to_thread_name method. */ |
3089 | ||
f6ac5f3d PA |
3090 | const char * |
3091 | windows_nat_target::thread_name (struct thread_info *thr) | |
24cdb46e | 3092 | { |
28688adf | 3093 | return thread_rec (thr->ptid, DONT_INVALIDATE_CONTEXT)->name.get (); |
24cdb46e РИ |
3094 | } |
3095 | ||
24e60978 | 3096 | |
6c265988 | 3097 | void _initialize_windows_nat (); |
24e60978 | 3098 | void |
6c265988 | 3099 | _initialize_windows_nat () |
24e60978 | 3100 | { |
df7e5265 GB |
3101 | x86_dr_low.set_control = cygwin_set_dr7; |
3102 | x86_dr_low.set_addr = cygwin_set_dr; | |
3103 | x86_dr_low.get_addr = cygwin_get_dr; | |
3104 | x86_dr_low.get_status = cygwin_get_dr6; | |
3105 | x86_dr_low.get_control = cygwin_get_dr7; | |
51a9c8c5 | 3106 | |
df7e5265 GB |
3107 | /* x86_dr_low.debug_register_length field is set by |
3108 | calling x86_set_debug_register_length function | |
51a9c8c5 | 3109 | in processor windows specific native file. */ |
fa58ee11 | 3110 | |
d9f719f1 | 3111 | add_inf_child_target (&the_windows_nat_target); |
1ef980b9 | 3112 | |
d0d0ab16 CV |
3113 | #ifdef __CYGWIN__ |
3114 | cygwin_internal (CW_SET_DOS_FILE_WARNING, 0); | |
3115 | #endif | |
3116 | ||
463888ab РИ |
3117 | add_com ("signal-event", class_run, signal_event_command, _("\ |
3118 | Signal a crashed process with event ID, to allow its debugging.\n\ | |
3119 | This command is needed in support of setting up GDB as JIT debugger on \ | |
3120 | MS-Windows. The command should be invoked from the GDB command line using \ | |
3121 | the '-ex' command-line option. The ID of the event that blocks the \ | |
3122 | crashed process will be supplied by the Windows JIT debugging mechanism.")); | |
3123 | ||
10325bc5 | 3124 | #ifdef __CYGWIN__ |
5bf193a2 AC |
3125 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
3126 | Set use of shell to start subprocess."), _("\ | |
3127 | Show use of shell to start subprocess."), NULL, | |
3128 | NULL, | |
3129 | NULL, /* FIXME: i18n: */ | |
3130 | &setlist, &showlist); | |
3131 | ||
581e13c1 MS |
3132 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, |
3133 | &cygwin_exceptions, _("\ | |
09280ddf CF |
3134 | Break when an exception is detected in the Cygwin DLL itself."), _("\ |
3135 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
3136 | NULL, | |
3137 | NULL, /* FIXME: i18n: */ | |
3138 | &setlist, &showlist); | |
10325bc5 | 3139 | #endif |
09280ddf | 3140 | |
5bf193a2 AC |
3141 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
3142 | Set creation of new console when creating child process."), _("\ | |
3143 | Show creation of new console when creating child process."), NULL, | |
3144 | NULL, | |
3145 | NULL, /* FIXME: i18n: */ | |
3146 | &setlist, &showlist); | |
3147 | ||
3148 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
3149 | Set creation of new group when creating child process."), _("\ | |
3150 | Show creation of new group when creating child process."), NULL, | |
3151 | NULL, | |
3152 | NULL, /* FIXME: i18n: */ | |
3153 | &setlist, &showlist); | |
3154 | ||
3155 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
3156 | Set whether to display execution in child process."), _("\ | |
3157 | Show whether to display execution in child process."), NULL, | |
3158 | NULL, | |
3159 | NULL, /* FIXME: i18n: */ | |
3160 | &setlist, &showlist); | |
3161 | ||
3162 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
3163 | Set whether to display kernel events in child process."), _("\ | |
3164 | Show whether to display kernel events in child process."), NULL, | |
3165 | NULL, | |
3166 | NULL, /* FIXME: i18n: */ | |
3167 | &setlist, &showlist); | |
3168 | ||
3169 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
3170 | Set whether to display memory accesses in child process."), _("\ | |
3171 | Show whether to display memory accesses in child process."), NULL, | |
3172 | NULL, | |
3173 | NULL, /* FIXME: i18n: */ | |
3174 | &setlist, &showlist); | |
3175 | ||
3176 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
3177 | &debug_exceptions, _("\ | |
3178 | Set whether to display kernel exceptions in child process."), _("\ | |
3179 | Show whether to display kernel exceptions in child process."), NULL, | |
3180 | NULL, | |
3181 | NULL, /* FIXME: i18n: */ | |
3182 | &setlist, &showlist); | |
1ef980b9 | 3183 | |
711e434b | 3184 | init_w32_command_list (); |
c1748f97 PM |
3185 | |
3186 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 3187 | _("Display selectors infos."), |
c1748f97 | 3188 | &info_w32_cmdlist); |
9e439f00 TT |
3189 | |
3190 | if (!initialize_loadable ()) | |
3191 | { | |
3192 | /* This will probably fail on Windows 9x/Me. Let the user know | |
3193 | that we're missing some functionality. */ | |
3194 | warning(_("\ | |
3195 | cannot automatically find executable file or library to read symbols.\n\ | |
3196 | Use \"file\" or \"dll\" command to load executable/libraries directly.")); | |
3197 | } | |
24e60978 | 3198 | } |
3cee93ac | 3199 | |
fa4ba8da PM |
3200 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
3201 | ||
3202 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
3203 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 3204 | actually set up when windows_continue is called. */ |
9bb9e8ad | 3205 | static void |
fa4ba8da PM |
3206 | cygwin_set_dr (int i, CORE_ADDR addr) |
3207 | { | |
3208 | if (i < 0 || i > 3) | |
3209 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3210 | _("Invalid register %d in cygwin_set_dr.\n"), i); |
41b4aadc | 3211 | dr[i] = addr; |
fa4ba8da PM |
3212 | debug_registers_changed = 1; |
3213 | debug_registers_used = 1; | |
3214 | } | |
3215 | ||
3216 | /* Pass the value VAL to the inferior in the DR7 debug control | |
3217 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 3218 | will be actually set up in windows_wait. */ |
9bb9e8ad PM |
3219 | static void |
3220 | cygwin_set_dr7 (unsigned long val) | |
fa4ba8da | 3221 | { |
9bb9e8ad | 3222 | dr[7] = (CORE_ADDR) val; |
fa4ba8da PM |
3223 | debug_registers_changed = 1; |
3224 | debug_registers_used = 1; | |
3225 | } | |
3226 | ||
7b50312a PA |
3227 | /* Get the value of debug register I from the inferior. */ |
3228 | ||
3229 | static CORE_ADDR | |
3230 | cygwin_get_dr (int i) | |
3231 | { | |
3232 | return dr[i]; | |
3233 | } | |
3234 | ||
fa4ba8da PM |
3235 | /* Get the value of the DR6 debug status register from the inferior. |
3236 | Here we just return the value stored in dr[6] | |
3237 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
9bb9e8ad | 3238 | static unsigned long |
fa4ba8da PM |
3239 | cygwin_get_dr6 (void) |
3240 | { | |
9bb9e8ad | 3241 | return (unsigned long) dr[6]; |
fa4ba8da PM |
3242 | } |
3243 | ||
7b50312a PA |
3244 | /* Get the value of the DR7 debug status register from the inferior. |
3245 | Here we just return the value stored in dr[7] by the last call to | |
3246 | thread_rec for current_event.dwThreadId id. */ | |
3247 | ||
3248 | static unsigned long | |
3249 | cygwin_get_dr7 (void) | |
3250 | { | |
3251 | return (unsigned long) dr[7]; | |
3252 | } | |
3253 | ||
2dc38344 | 3254 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 3255 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
581e13c1 | 3256 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
f6ac5f3d | 3257 | |
57810aa7 | 3258 | bool |
f6ac5f3d | 3259 | windows_nat_target::thread_alive (ptid_t ptid) |
3cee93ac | 3260 | { |
7c7411bc | 3261 | gdb_assert (ptid.lwp () != 0); |
39f77062 | 3262 | |
28688adf | 3263 | return (WaitForSingleObject (thread_rec (ptid, DONT_INVALIDATE_CONTEXT)->h, 0) |
8e61ebec | 3264 | != WAIT_OBJECT_0); |
3cee93ac CF |
3265 | } |
3266 | ||
6c265988 | 3267 | void _initialize_check_for_gdb_ini (); |
2a3d5645 | 3268 | void |
6c265988 | 3269 | _initialize_check_for_gdb_ini () |
2a3d5645 CF |
3270 | { |
3271 | char *homedir; | |
3272 | if (inhibit_gdbinit) | |
3273 | return; | |
3274 | ||
3275 | homedir = getenv ("HOME"); | |
3276 | if (homedir) | |
3277 | { | |
3278 | char *p; | |
3279 | char *oldini = (char *) alloca (strlen (homedir) + | |
1270fac6 | 3280 | sizeof ("gdb.ini") + 1); |
2a3d5645 CF |
3281 | strcpy (oldini, homedir); |
3282 | p = strchr (oldini, '\0'); | |
0ba1096a | 3283 | if (p > oldini && !IS_DIR_SEPARATOR (p[-1])) |
2a3d5645 CF |
3284 | *p++ = '/'; |
3285 | strcpy (p, "gdb.ini"); | |
3286 | if (access (oldini, 0) == 0) | |
3287 | { | |
3288 | int len = strlen (oldini); | |
1270fac6 | 3289 | char *newini = (char *) alloca (len + 2); |
08850b56 | 3290 | |
1270fac6 | 3291 | xsnprintf (newini, len + 2, "%.*s.gdbinit", |
08850b56 | 3292 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 3293 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
3294 | } |
3295 | } | |
3296 | } |