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dc05df57 | 1 | /* Target-vector operations for controlling windows child processes, for GDB. |
0a65a603 | 2 | |
1d506c26 | 3 | Copyright (C) 1995-2024 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" | |
ef0f16cc | 25 | #include "frame.h" |
24e60978 | 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> |
4cb763d6 | 46 | #include <queue> |
cad9cd60 | 47 | |
0ba1096a | 48 | #include "filenames.h" |
1ef980b9 SC |
49 | #include "symfile.h" |
50 | #include "objfiles.h" | |
92107356 | 51 | #include "gdb_bfd.h" |
bf31fd38 | 52 | #include "gdbsupport/gdb_obstack.h" |
fdfa3315 | 53 | #include "gdbthread.h" |
24e60978 | 54 | #include "gdbcmd.h" |
1e37c281 | 55 | #include <unistd.h> |
4646aa9d | 56 | #include "exec.h" |
3ee6f623 | 57 | #include "solist.h" |
3cb8e7f6 | 58 | #include "solib.h" |
de1b3c3d | 59 | #include "xml-support.h" |
463888ab | 60 | #include "inttypes.h" |
24e60978 | 61 | |
6c7de422 MK |
62 | #include "i386-tdep.h" |
63 | #include "i387-tdep.h" | |
64 | ||
31b060a2 CF |
65 | #include "windows-tdep.h" |
66 | #include "windows-nat.h" | |
df7e5265 | 67 | #include "x86-nat.h" |
ecc13e53 | 68 | #include "complaints.h" |
51a9c8c5 | 69 | #include "inf-child.h" |
268a13a5 TT |
70 | #include "gdbsupport/gdb_tilde_expand.h" |
71 | #include "gdbsupport/pathstuff.h" | |
559e7e50 | 72 | #include "gdbsupport/gdb_wait.h" |
ae1f8880 | 73 | #include "nat/windows-nat.h" |
0363df3d | 74 | #include "gdbsupport/symbol.h" |
d08bae3d TT |
75 | #include "ser-event.h" |
76 | #include "inf-loop.h" | |
de1b3c3d | 77 | |
4834dad0 TT |
78 | using namespace windows_nat; |
79 | ||
20489cca TT |
80 | /* Maintain a linked list of "so" information. */ |
81 | struct windows_solib | |
82 | { | |
83 | LPVOID load_addr = 0; | |
84 | CORE_ADDR text_offset = 0; | |
85 | ||
86 | /* Original name. */ | |
87 | std::string original_name; | |
88 | /* Expanded form of the name. */ | |
89 | std::string name; | |
90 | }; | |
91 | ||
92 | struct windows_per_inferior : public windows_process_info | |
93 | { | |
94 | windows_thread_info *thread_rec (ptid_t ptid, | |
95 | thread_disposition_type disposition) override; | |
96 | int handle_output_debug_string (struct target_waitstatus *ourstatus) override; | |
97 | void handle_load_dll (const char *dll_name, LPVOID base) override; | |
98 | void handle_unload_dll () override; | |
99 | bool handle_access_violation (const EXCEPTION_RECORD *rec) override; | |
100 | ||
20489cca TT |
101 | uintptr_t dr[8] {}; |
102 | ||
103 | int windows_initialization_done = 0; | |
104 | ||
105 | std::vector<std::unique_ptr<windows_thread_info>> thread_list; | |
106 | ||
107 | /* Counts of things. */ | |
108 | int saw_create = 0; | |
109 | int open_process_used = 0; | |
110 | #ifdef __x86_64__ | |
111 | void *wow64_dbgbreak = nullptr; | |
112 | #endif | |
113 | ||
114 | /* This vector maps GDB's idea of a register's number into an offset | |
115 | in the windows exception context vector. | |
116 | ||
117 | It also contains the bit mask needed to load the register in question. | |
118 | ||
119 | The contents of this table can only be computed by the units | |
120 | that provide CPU-specific support for Windows native debugging. | |
121 | ||
122 | One day we could read a reg, we could inspect the context we | |
123 | already have loaded, if it doesn't have the bit set that we need, | |
124 | we read that set of registers in using GetThreadContext. If the | |
125 | context already contains what we need, we just unpack it. Then to | |
126 | write a register, first we have to ensure that the context contains | |
127 | the other regs of the group, and then we copy the info in and set | |
128 | out bit. */ | |
129 | ||
130 | const int *mappings = nullptr; | |
131 | ||
132 | /* The function to use in order to determine whether a register is | |
133 | a segment register or not. */ | |
134 | segment_register_p_ftype *segment_register_p = nullptr; | |
135 | ||
136 | std::vector<windows_solib> solibs; | |
137 | ||
138 | #ifdef __CYGWIN__ | |
20489cca TT |
139 | /* The starting and ending address of the cygwin1.dll text segment. */ |
140 | CORE_ADDR cygwin_load_start = 0; | |
141 | CORE_ADDR cygwin_load_end = 0; | |
142 | #endif /* __CYGWIN__ */ | |
143 | }; | |
144 | ||
0578e87f | 145 | /* The current process. */ |
20489cca | 146 | static windows_per_inferior windows_process; |
0578e87f | 147 | |
b3c613f2 | 148 | #undef STARTUPINFO |
b3c613f2 CF |
149 | |
150 | #ifndef __CYGWIN__ | |
151 | # define __PMAX (MAX_PATH + 1) | |
b3c613f2 | 152 | # define STARTUPINFO STARTUPINFOA |
b3c613f2 CF |
153 | #else |
154 | # define __PMAX PATH_MAX | |
b3c613f2 | 155 | # define STARTUPINFO STARTUPINFOW |
10325bc5 | 156 | #endif |
a244bdca | 157 | |
0714f9bf SS |
158 | /* If we're not using the old Cygwin header file set, define the |
159 | following which never should have been in the generic Win32 API | |
581e13c1 | 160 | headers in the first place since they were our own invention... */ |
0714f9bf | 161 | #ifndef _GNU_H_WINDOWS_H |
9d3789f7 | 162 | enum |
8e860359 CF |
163 | { |
164 | FLAG_TRACE_BIT = 0x100, | |
8e860359 | 165 | }; |
0714f9bf SS |
166 | #endif |
167 | ||
5851ab76 JB |
168 | #ifndef CONTEXT_EXTENDED_REGISTERS |
169 | /* This macro is only defined on ia32. It only makes sense on this target, | |
170 | so define it as zero if not already defined. */ | |
171 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
172 | #endif | |
173 | ||
f0666312 | 174 | #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \ |
dda83cd7 SM |
175 | | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \ |
176 | | CONTEXT_EXTENDED_REGISTERS | |
97da3b20 | 177 | |
6537bb24 | 178 | #define DR6_CLEAR_VALUE 0xffff0ff0 |
97da3b20 | 179 | |
3cee93ac | 180 | /* The string sent by cygwin when it processes a signal. |
581e13c1 | 181 | FIXME: This should be in a cygwin include file. */ |
3929abe9 CF |
182 | #ifndef _CYGWIN_SIGNAL_STRING |
183 | #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f" | |
184 | #endif | |
3cee93ac | 185 | |
29fe111d | 186 | #define CHECK(x) check (x, __FILE__,__LINE__) |
4ef367bf TT |
187 | #define DEBUG_EXEC(fmt, ...) \ |
188 | debug_prefixed_printf_cond (debug_exec, "windows exec", fmt, ## __VA_ARGS__) | |
189 | #define DEBUG_EVENTS(fmt, ...) \ | |
190 | debug_prefixed_printf_cond (debug_events, "windows events", fmt, \ | |
191 | ## __VA_ARGS__) | |
192 | #define DEBUG_MEM(fmt, ...) \ | |
193 | debug_prefixed_printf_cond (debug_memory, "windows mem", fmt, \ | |
194 | ## __VA_ARGS__) | |
195 | #define DEBUG_EXCEPT(fmt, ...) \ | |
196 | debug_prefixed_printf_cond (debug_exceptions, "windows except", fmt, \ | |
197 | ## __VA_ARGS__) | |
24e60978 | 198 | |
9bb9e8ad PM |
199 | static void cygwin_set_dr (int i, CORE_ADDR addr); |
200 | static void cygwin_set_dr7 (unsigned long val); | |
a961bc18 | 201 | static CORE_ADDR cygwin_get_dr (int i); |
9bb9e8ad | 202 | static unsigned long cygwin_get_dr6 (void); |
a961bc18 | 203 | static unsigned long cygwin_get_dr7 (void); |
9bb9e8ad | 204 | |
581e13c1 | 205 | /* User options. */ |
491144b5 | 206 | static bool new_console = false; |
10325bc5 | 207 | #ifdef __CYGWIN__ |
491144b5 | 208 | static bool cygwin_exceptions = false; |
10325bc5 | 209 | #endif |
491144b5 CB |
210 | static bool new_group = true; |
211 | static bool debug_exec = false; /* show execution */ | |
212 | static bool debug_events = false; /* show events from kernel */ | |
213 | static bool debug_memory = false; /* show target memory accesses */ | |
214 | static bool debug_exceptions = false; /* show target exceptions */ | |
215 | static bool useshell = false; /* use shell for subprocesses */ | |
dfe7f3ac | 216 | |
73c13fe6 TT |
217 | /* See windows_nat_target::resume to understand why this is commented |
218 | out. */ | |
219 | #if 0 | |
24e60978 | 220 | /* This vector maps the target's idea of an exception (extracted |
581e13c1 | 221 | from the DEBUG_EVENT structure) to GDB's idea. */ |
24e60978 SC |
222 | |
223 | struct xlate_exception | |
224 | { | |
73c13fe6 | 225 | DWORD them; |
2ea28649 | 226 | enum gdb_signal us; |
24e60978 SC |
227 | }; |
228 | ||
73c13fe6 | 229 | static const struct xlate_exception xlate[] = |
24e60978 | 230 | { |
a493e3e2 PA |
231 | {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV}, |
232 | {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV}, | |
233 | {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP}, | |
234 | {DBG_CONTROL_C, GDB_SIGNAL_INT}, | |
235 | {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP}, | |
73c13fe6 TT |
236 | {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE} |
237 | }; | |
24e60978 | 238 | |
73c13fe6 | 239 | #endif /* 0 */ |
f6ac5f3d PA |
240 | |
241 | struct windows_nat_target final : public x86_nat_target<inf_child_target> | |
242 | { | |
4cb763d6 TT |
243 | windows_nat_target (); |
244 | ||
f6ac5f3d PA |
245 | void close () override; |
246 | ||
247 | void attach (const char *, int) override; | |
248 | ||
249 | bool attach_no_wait () override | |
250 | { return true; } | |
251 | ||
252 | void detach (inferior *, int) override; | |
253 | ||
254 | void resume (ptid_t, int , enum gdb_signal) override; | |
255 | ||
b60cea74 | 256 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
257 | |
258 | void fetch_registers (struct regcache *, int) override; | |
259 | void store_registers (struct regcache *, int) override; | |
260 | ||
0a4afda3 TT |
261 | bool stopped_by_sw_breakpoint () override |
262 | { | |
50838d1b | 263 | windows_thread_info *th |
0578e87f | 264 | = windows_process.thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT); |
50838d1b | 265 | return th->stopped_at_software_breakpoint; |
0a4afda3 TT |
266 | } |
267 | ||
268 | bool supports_stopped_by_sw_breakpoint () override | |
269 | { | |
270 | return true; | |
271 | } | |
272 | ||
f6ac5f3d PA |
273 | enum target_xfer_status xfer_partial (enum target_object object, |
274 | const char *annex, | |
275 | gdb_byte *readbuf, | |
276 | const gdb_byte *writebuf, | |
277 | ULONGEST offset, ULONGEST len, | |
278 | ULONGEST *xfered_len) override; | |
279 | ||
280 | void files_info () override; | |
281 | ||
282 | void kill () override; | |
283 | ||
284 | void create_inferior (const char *, const std::string &, | |
285 | char **, int) override; | |
286 | ||
287 | void mourn_inferior () override; | |
288 | ||
57810aa7 | 289 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d | 290 | |
a068643d | 291 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
292 | |
293 | void interrupt () override; | |
c88afe9c | 294 | void pass_ctrlc () override; |
f6ac5f3d | 295 | |
0e90c441 | 296 | const char *pid_to_exec_file (int pid) override; |
f6ac5f3d | 297 | |
c80e29db | 298 | ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override; |
f6ac5f3d | 299 | |
57810aa7 | 300 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
301 | |
302 | const char *thread_name (struct thread_info *) override; | |
5b6d1e4f | 303 | |
4cb763d6 TT |
304 | ptid_t get_windows_debug_event (int pid, struct target_waitstatus *ourstatus, |
305 | target_wait_flags options); | |
50838d1b PA |
306 | |
307 | void do_initial_windows_stuff (DWORD pid, bool attaching); | |
bcb9251f TT |
308 | |
309 | bool supports_disable_randomization () override | |
310 | { | |
311 | return disable_randomization_available (); | |
312 | } | |
55176502 | 313 | |
d08bae3d TT |
314 | bool can_async_p () override |
315 | { | |
316 | return true; | |
317 | } | |
318 | ||
319 | bool is_async_p () override | |
320 | { | |
321 | return m_is_async; | |
322 | } | |
323 | ||
324 | void async (bool enable) override; | |
325 | ||
326 | int async_wait_fd () override | |
327 | { | |
328 | return serial_event_fd (m_wait_event); | |
329 | } | |
330 | ||
55176502 TT |
331 | private: |
332 | ||
333 | windows_thread_info *add_thread (ptid_t ptid, HANDLE h, void *tlb, | |
334 | bool main_thread_p); | |
335 | void delete_thread (ptid_t ptid, DWORD exit_code, bool main_thread_p); | |
336 | DWORD fake_create_process (); | |
4cb763d6 | 337 | |
d08bae3d TT |
338 | BOOL windows_continue (DWORD continue_status, int id, int killed, |
339 | bool last_call = false); | |
4cb763d6 | 340 | |
1d39fec4 HD |
341 | /* Helper function to start process_thread. */ |
342 | static DWORD WINAPI process_thread_starter (LPVOID self); | |
343 | ||
4cb763d6 TT |
344 | /* This function implements the background thread that starts |
345 | inferiors and waits for events. */ | |
346 | void process_thread (); | |
347 | ||
348 | /* Push FUNC onto the queue of requests for process_thread, and wait | |
349 | until it has been called. On Windows, certain debugging | |
350 | functions can only be called by the thread that started (or | |
351 | attached to) the inferior. These are all done in the worker | |
d08bae3d TT |
352 | thread, via calls to this method. If FUNC returns true, |
353 | process_thread will wait for debug events when FUNC returns. */ | |
354 | void do_synchronously (gdb::function_view<bool ()> func); | |
4cb763d6 TT |
355 | |
356 | /* This waits for a debug event, dispatching to the worker thread as | |
357 | needed. */ | |
358 | void wait_for_debug_event_main_thread (DEBUG_EVENT *event); | |
359 | ||
360 | /* Queue used to send requests to process_thread. This is | |
361 | implicitly locked. */ | |
d08bae3d | 362 | std::queue<gdb::function_view<bool ()>> m_queue; |
4cb763d6 TT |
363 | |
364 | /* Event used to signal process_thread that an item has been | |
365 | pushed. */ | |
366 | HANDLE m_pushed_event; | |
367 | /* Event used by process_thread to indicate that it has processed a | |
368 | single function call. */ | |
369 | HANDLE m_response_event; | |
d08bae3d TT |
370 | |
371 | /* Serial event used to communicate wait event availability to the | |
372 | main loop. */ | |
373 | serial_event *m_wait_event; | |
374 | ||
375 | /* The last debug event, when M_WAIT_EVENT has been set. */ | |
376 | DEBUG_EVENT m_last_debug_event {}; | |
377 | /* True if a debug event is pending. */ | |
378 | std::atomic<bool> m_debug_event_pending { false }; | |
379 | ||
380 | /* True if currently in async mode. */ | |
381 | bool m_is_async = false; | |
f6ac5f3d PA |
382 | }; |
383 | ||
fa4ba8da PM |
384 | static void |
385 | check (BOOL ok, const char *file, int line) | |
386 | { | |
387 | if (!ok) | |
02d04eac TT |
388 | { |
389 | unsigned err = (unsigned) GetLastError (); | |
390 | gdb_printf ("error return %s:%d was %u: %s\n", file, line, | |
391 | err, strwinerror (err)); | |
392 | } | |
fa4ba8da PM |
393 | } |
394 | ||
4cb763d6 TT |
395 | windows_nat_target::windows_nat_target () |
396 | : m_pushed_event (CreateEvent (nullptr, false, false, nullptr)), | |
d08bae3d TT |
397 | m_response_event (CreateEvent (nullptr, false, false, nullptr)), |
398 | m_wait_event (make_serial_event ()) | |
4cb763d6 | 399 | { |
1d39fec4 HD |
400 | HANDLE bg_thread = CreateThread (nullptr, 64 * 1024, |
401 | process_thread_starter, this, 0, nullptr); | |
4cb763d6 TT |
402 | CloseHandle (bg_thread); |
403 | } | |
404 | ||
d08bae3d TT |
405 | void |
406 | windows_nat_target::async (bool enable) | |
407 | { | |
408 | if (enable == is_async_p ()) | |
409 | return; | |
410 | ||
411 | if (enable) | |
412 | add_file_handler (async_wait_fd (), | |
413 | [] (int, gdb_client_data) | |
414 | { | |
415 | inferior_event_handler (INF_REG_EVENT); | |
416 | }, | |
417 | nullptr, "windows_nat_target"); | |
418 | else | |
419 | delete_file_handler (async_wait_fd ()); | |
0d146c1c HD |
420 | |
421 | m_is_async = enable; | |
d08bae3d TT |
422 | } |
423 | ||
4cb763d6 TT |
424 | /* A wrapper for WaitForSingleObject that issues a warning if |
425 | something unusual happens. */ | |
426 | static void | |
427 | wait_for_single (HANDLE handle, DWORD howlong) | |
428 | { | |
429 | while (true) | |
430 | { | |
431 | DWORD r = WaitForSingleObject (handle, howlong); | |
432 | if (r == WAIT_OBJECT_0) | |
433 | return; | |
434 | if (r == WAIT_FAILED) | |
435 | { | |
436 | unsigned err = (unsigned) GetLastError (); | |
437 | warning ("WaitForSingleObject failed (code %u): %s", | |
438 | err, strwinerror (err)); | |
439 | } | |
440 | else | |
441 | warning ("unexpected result from WaitForSingleObject: %u", | |
442 | (unsigned) r); | |
443 | } | |
444 | } | |
445 | ||
1d39fec4 HD |
446 | DWORD WINAPI |
447 | windows_nat_target::process_thread_starter (LPVOID self) | |
448 | { | |
449 | ((windows_nat_target *) self)->process_thread (); | |
450 | return 0; | |
451 | } | |
452 | ||
4cb763d6 TT |
453 | void |
454 | windows_nat_target::process_thread () | |
455 | { | |
456 | while (true) | |
457 | { | |
458 | wait_for_single (m_pushed_event, INFINITE); | |
459 | ||
d08bae3d | 460 | gdb::function_view<bool ()> func = std::move (m_queue.front ()); |
4cb763d6 TT |
461 | m_queue.pop (); |
462 | ||
d08bae3d | 463 | bool should_wait = func (); |
4cb763d6 | 464 | SetEvent (m_response_event); |
d08bae3d TT |
465 | |
466 | if (should_wait) | |
467 | { | |
468 | if (!m_debug_event_pending) | |
469 | { | |
470 | wait_for_debug_event (&m_last_debug_event, INFINITE); | |
471 | m_debug_event_pending = true; | |
472 | } | |
473 | serial_event_set (m_wait_event); | |
474 | } | |
4cb763d6 TT |
475 | } |
476 | } | |
477 | ||
478 | void | |
d08bae3d | 479 | windows_nat_target::do_synchronously (gdb::function_view<bool ()> func) |
4cb763d6 TT |
480 | { |
481 | m_queue.emplace (std::move (func)); | |
482 | SetEvent (m_pushed_event); | |
483 | wait_for_single (m_response_event, INFINITE); | |
484 | } | |
485 | ||
486 | void | |
487 | windows_nat_target::wait_for_debug_event_main_thread (DEBUG_EVENT *event) | |
488 | { | |
489 | do_synchronously ([&] () | |
490 | { | |
d08bae3d TT |
491 | if (m_debug_event_pending) |
492 | { | |
493 | *event = m_last_debug_event; | |
494 | m_debug_event_pending = false; | |
495 | serial_event_clear (m_wait_event); | |
496 | } | |
497 | else | |
498 | wait_for_debug_event (event, INFINITE); | |
499 | return false; | |
4cb763d6 TT |
500 | }); |
501 | } | |
502 | ||
28688adf | 503 | /* See nat/windows-nat.h. */ |
8e61ebec | 504 | |
28688adf | 505 | windows_thread_info * |
20489cca | 506 | windows_per_inferior::thread_rec |
0578e87f | 507 | (ptid_t ptid, thread_disposition_type disposition) |
24e60978 | 508 | { |
44c6a410 | 509 | for (auto &th : thread_list) |
28688adf | 510 | if (th->tid == ptid.lwp ()) |
3cee93ac | 511 | { |
8e61ebec | 512 | if (!th->suspended) |
3cee93ac | 513 | { |
8e61ebec TT |
514 | switch (disposition) |
515 | { | |
516 | case DONT_INVALIDATE_CONTEXT: | |
517 | /* Nothing. */ | |
518 | break; | |
519 | case INVALIDATE_CONTEXT: | |
28688adf | 520 | if (ptid.lwp () != current_event.dwThreadId) |
8e61ebec TT |
521 | th->suspend (); |
522 | th->reload_context = true; | |
523 | break; | |
524 | case DONT_SUSPEND: | |
525 | th->reload_context = true; | |
526 | th->suspended = -1; | |
527 | break; | |
528 | } | |
3cee93ac | 529 | } |
44c6a410 | 530 | return th.get (); |
3cee93ac CF |
531 | } |
532 | ||
533 | return NULL; | |
534 | } | |
535 | ||
c559d709 JB |
536 | /* Add a thread to the thread list. |
537 | ||
538 | PTID is the ptid of the thread to be added. | |
539 | H is its Windows handle. | |
540 | TLB is its thread local base. | |
541 | MAIN_THREAD_P should be true if the thread to be added is | |
542 | the main thread, false otherwise. */ | |
543 | ||
55176502 TT |
544 | windows_thread_info * |
545 | windows_nat_target::add_thread (ptid_t ptid, HANDLE h, void *tlb, | |
546 | bool main_thread_p) | |
3cee93ac | 547 | { |
876d1cd7 | 548 | windows_thread_info *th; |
2dc38344 | 549 | |
7c7411bc | 550 | gdb_assert (ptid.lwp () != 0); |
2dc38344 | 551 | |
0578e87f | 552 | if ((th = windows_process.thread_rec (ptid, DONT_INVALIDATE_CONTEXT))) |
3cee93ac CF |
553 | return th; |
554 | ||
e9534bd2 | 555 | CORE_ADDR base = (CORE_ADDR) (uintptr_t) tlb; |
46f9f931 HD |
556 | #ifdef __x86_64__ |
557 | /* For WOW64 processes, this is actually the pointer to the 64bit TIB, | |
558 | and the 32bit TIB is exactly 2 pages after it. */ | |
0578e87f | 559 | if (windows_process.wow64_process) |
e9534bd2 | 560 | base += 0x2000; |
46f9f931 | 561 | #endif |
28688adf | 562 | th = new windows_thread_info (ptid.lwp (), h, base); |
20489cca | 563 | windows_process.thread_list.emplace_back (th); |
c559d709 JB |
564 | |
565 | /* Add this new thread to the list of threads. | |
566 | ||
567 | To be consistent with what's done on other platforms, we add | |
568 | the main thread silently (in reality, this thread is really | |
569 | more of a process to the user than a thread). */ | |
570 | if (main_thread_p) | |
55176502 | 571 | add_thread_silent (this, ptid); |
c559d709 | 572 | else |
55176502 | 573 | ::add_thread (this, ptid); |
c559d709 | 574 | |
296d3d2e TT |
575 | /* It's simplest to always set this and update the debug |
576 | registers. */ | |
577 | th->debug_registers_changed = true; | |
578 | ||
3cee93ac | 579 | return th; |
24e60978 SC |
580 | } |
581 | ||
26c4b26f | 582 | /* Clear out any old thread list and reinitialize it to a |
581e13c1 | 583 | pristine state. */ |
24e60978 | 584 | static void |
dc05df57 | 585 | windows_init_thread_list (void) |
24e60978 | 586 | { |
383228bc | 587 | DEBUG_EVENTS ("called"); |
20489cca | 588 | windows_process.thread_list.clear (); |
3cee93ac CF |
589 | } |
590 | ||
c559d709 JB |
591 | /* Delete a thread from the list of threads. |
592 | ||
593 | PTID is the ptid of the thread to be deleted. | |
594 | EXIT_CODE is the thread's exit code. | |
595 | MAIN_THREAD_P should be true if the thread to be deleted is | |
596 | the main thread, false otherwise. */ | |
597 | ||
55176502 TT |
598 | void |
599 | windows_nat_target::delete_thread (ptid_t ptid, DWORD exit_code, | |
600 | bool main_thread_p) | |
3cee93ac | 601 | { |
2dc38344 PA |
602 | DWORD id; |
603 | ||
7c7411bc | 604 | gdb_assert (ptid.lwp () != 0); |
2dc38344 | 605 | |
7c7411bc | 606 | id = ptid.lwp (); |
3cee93ac | 607 | |
9d7d58e7 PA |
608 | /* Note that no notification was printed when the main thread was |
609 | created, and thus, unless in verbose mode, we should be symmetrical, | |
610 | and avoid an exit notification for the main thread here as well. */ | |
c559d709 | 611 | |
9d7d58e7 PA |
612 | bool silent = (main_thread_p && !info_verbose); |
613 | thread_info *to_del = this->find_thread (ptid); | |
614 | delete_thread_with_exit_code (to_del, exit_code, silent); | |
3cee93ac | 615 | |
20489cca TT |
616 | auto iter = std::find_if (windows_process.thread_list.begin (), |
617 | windows_process.thread_list.end (), | |
23d04cff | 618 | [=] (std::unique_ptr<windows_thread_info> &th) |
93366324 | 619 | { |
55a1e039 | 620 | return th->tid == id; |
93366324 | 621 | }); |
3cee93ac | 622 | |
20489cca TT |
623 | if (iter != windows_process.thread_list.end ()) |
624 | windows_process.thread_list.erase (iter); | |
24e60978 SC |
625 | } |
626 | ||
9a325b7b JB |
627 | /* Fetches register number R from the given windows_thread_info, |
628 | and supplies its value to the given regcache. | |
629 | ||
630 | This function assumes that R is non-negative. A failed assertion | |
631 | is raised if that is not true. | |
632 | ||
633 | This function assumes that TH->RELOAD_CONTEXT is not set, meaning | |
634 | that the windows_thread_info has an up-to-date context. A failed | |
635 | assertion is raised if that assumption is violated. */ | |
636 | ||
3cee93ac | 637 | static void |
9a325b7b JB |
638 | windows_fetch_one_register (struct regcache *regcache, |
639 | windows_thread_info *th, int r) | |
24e60978 | 640 | { |
9a325b7b JB |
641 | gdb_assert (r >= 0); |
642 | gdb_assert (!th->reload_context); | |
643 | ||
46f9f931 HD |
644 | char *context_ptr = (char *) &th->context; |
645 | #ifdef __x86_64__ | |
0578e87f | 646 | if (windows_process.wow64_process) |
46f9f931 HD |
647 | context_ptr = (char *) &th->wow64_context; |
648 | #endif | |
649 | ||
20489cca | 650 | char *context_offset = context_ptr + windows_process.mappings[r]; |
ac7936df | 651 | struct gdbarch *gdbarch = regcache->arch (); |
08106042 | 652 | i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (gdbarch); |
9a325b7b | 653 | |
0a4afda3 TT |
654 | gdb_assert (!gdbarch_read_pc_p (gdbarch)); |
655 | gdb_assert (gdbarch_pc_regnum (gdbarch) >= 0); | |
656 | gdb_assert (!gdbarch_write_pc_p (gdbarch)); | |
657 | ||
a197d5f7 TT |
658 | /* GDB treats some registers as 32-bit, where they are in fact only |
659 | 16 bits long. These cases must be handled specially to avoid | |
660 | reading extraneous bits from the context. */ | |
661 | if (r == I387_FISEG_REGNUM (tdep) || windows_process.segment_register_p (r)) | |
9a325b7b | 662 | { |
a197d5f7 TT |
663 | gdb_byte bytes[4] = {}; |
664 | memcpy (bytes, context_offset, 2); | |
665 | regcache->raw_supply (r, bytes); | |
9a325b7b JB |
666 | } |
667 | else if (r == I387_FOP_REGNUM (tdep)) | |
668 | { | |
669 | long l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1); | |
a197d5f7 | 670 | regcache->raw_supply (r, &l); |
9a325b7b JB |
671 | } |
672 | else | |
0a4afda3 TT |
673 | { |
674 | if (th->stopped_at_software_breakpoint | |
7be2bb4f | 675 | && !th->pc_adjusted |
0a4afda3 TT |
676 | && r == gdbarch_pc_regnum (gdbarch)) |
677 | { | |
678 | int size = register_size (gdbarch, r); | |
679 | if (size == 4) | |
680 | { | |
681 | uint32_t value; | |
682 | memcpy (&value, context_offset, size); | |
683 | value -= gdbarch_decr_pc_after_break (gdbarch); | |
684 | memcpy (context_offset, &value, size); | |
685 | } | |
686 | else | |
687 | { | |
688 | gdb_assert (size == 8); | |
689 | uint64_t value; | |
690 | memcpy (&value, context_offset, size); | |
691 | value -= gdbarch_decr_pc_after_break (gdbarch); | |
692 | memcpy (context_offset, &value, size); | |
693 | } | |
7be2bb4f TT |
694 | /* Make sure we only rewrite the PC a single time. */ |
695 | th->pc_adjusted = true; | |
0a4afda3 TT |
696 | } |
697 | regcache->raw_supply (r, context_offset); | |
698 | } | |
9a325b7b JB |
699 | } |
700 | ||
701 | void | |
702 | windows_nat_target::fetch_registers (struct regcache *regcache, int r) | |
703 | { | |
0578e87f TT |
704 | windows_thread_info *th |
705 | = windows_process.thread_rec (regcache->ptid (), INVALIDATE_CONTEXT); | |
9a325b7b JB |
706 | |
707 | /* Check if TH exists. Windows sometimes uses a non-existent | |
708 | thread id in its events. */ | |
709 | if (th == NULL) | |
710 | return; | |
6c7de422 | 711 | |
3de88e9a | 712 | if (th->reload_context) |
3ade5333 | 713 | { |
46f9f931 | 714 | #ifdef __x86_64__ |
0578e87f | 715 | if (windows_process.wow64_process) |
46f9f931 HD |
716 | { |
717 | th->wow64_context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
718 | CHECK (Wow64GetThreadContext (th->h, &th->wow64_context)); | |
719 | /* Copy dr values from that thread. | |
720 | But only if there were not modified since last stop. | |
721 | PR gdb/2388 */ | |
296d3d2e | 722 | if (!th->debug_registers_changed) |
46f9f931 | 723 | { |
20489cca TT |
724 | windows_process.dr[0] = th->wow64_context.Dr0; |
725 | windows_process.dr[1] = th->wow64_context.Dr1; | |
726 | windows_process.dr[2] = th->wow64_context.Dr2; | |
727 | windows_process.dr[3] = th->wow64_context.Dr3; | |
728 | windows_process.dr[6] = th->wow64_context.Dr6; | |
729 | windows_process.dr[7] = th->wow64_context.Dr7; | |
46f9f931 HD |
730 | } |
731 | } | |
732 | else | |
cb832706 | 733 | #endif |
a244bdca | 734 | { |
a244bdca | 735 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; |
17617f2d | 736 | CHECK (GetThreadContext (th->h, &th->context)); |
2b008701 | 737 | /* Copy dr values from that thread. |
581e13c1 MS |
738 | But only if there were not modified since last stop. |
739 | PR gdb/2388 */ | |
296d3d2e | 740 | if (!th->debug_registers_changed) |
88616312 | 741 | { |
20489cca TT |
742 | windows_process.dr[0] = th->context.Dr0; |
743 | windows_process.dr[1] = th->context.Dr1; | |
744 | windows_process.dr[2] = th->context.Dr2; | |
745 | windows_process.dr[3] = th->context.Dr3; | |
746 | windows_process.dr[6] = th->context.Dr6; | |
747 | windows_process.dr[7] = th->context.Dr7; | |
88616312 | 748 | } |
a244bdca | 749 | } |
62fe396b | 750 | th->reload_context = false; |
3ade5333 CF |
751 | } |
752 | ||
9a325b7b JB |
753 | if (r < 0) |
754 | for (r = 0; r < gdbarch_num_regs (regcache->arch()); r++) | |
755 | windows_fetch_one_register (regcache, th, r); | |
3cee93ac | 756 | else |
9a325b7b | 757 | windows_fetch_one_register (regcache, th, r); |
3cee93ac CF |
758 | } |
759 | ||
9a325b7b JB |
760 | /* Collect the register number R from the given regcache, and store |
761 | its value into the corresponding area of the given thread's context. | |
3de88e9a | 762 | |
9a325b7b JB |
763 | This function assumes that R is non-negative. A failed assertion |
764 | assertion is raised if that is not true. */ | |
3cee93ac CF |
765 | |
766 | static void | |
9a325b7b JB |
767 | windows_store_one_register (const struct regcache *regcache, |
768 | windows_thread_info *th, int r) | |
3cee93ac | 769 | { |
9a325b7b JB |
770 | gdb_assert (r >= 0); |
771 | ||
46f9f931 HD |
772 | char *context_ptr = (char *) &th->context; |
773 | #ifdef __x86_64__ | |
0578e87f | 774 | if (windows_process.wow64_process) |
46f9f931 HD |
775 | context_ptr = (char *) &th->wow64_context; |
776 | #endif | |
777 | ||
a197d5f7 TT |
778 | struct gdbarch *gdbarch = regcache->arch (); |
779 | i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (gdbarch); | |
780 | ||
781 | /* GDB treats some registers as 32-bit, where they are in fact only | |
782 | 16 bits long. These cases must be handled specially to avoid | |
783 | overwriting other registers in the context. */ | |
784 | if (r == I387_FISEG_REGNUM (tdep) || windows_process.segment_register_p (r)) | |
785 | { | |
786 | gdb_byte bytes[4]; | |
787 | regcache->raw_collect (r, bytes); | |
788 | memcpy (context_ptr + windows_process.mappings[r], bytes, 2); | |
789 | } | |
790 | else if (r == I387_FOP_REGNUM (tdep)) | |
791 | { | |
792 | gdb_byte bytes[4]; | |
793 | regcache->raw_collect (r, bytes); | |
794 | /* The value of FOP occupies the top two bytes in the context, | |
795 | so write the two low-order bytes from the cache into the | |
796 | appropriate spot. */ | |
797 | memcpy (context_ptr + windows_process.mappings[r] + 2, bytes, 2); | |
798 | } | |
799 | else | |
800 | regcache->raw_collect (r, context_ptr + windows_process.mappings[r]); | |
24e60978 SC |
801 | } |
802 | ||
3de88e9a SM |
803 | /* Store a new register value into the context of the thread tied to |
804 | REGCACHE. */ | |
f6ac5f3d PA |
805 | |
806 | void | |
807 | windows_nat_target::store_registers (struct regcache *regcache, int r) | |
3cee93ac | 808 | { |
0578e87f TT |
809 | windows_thread_info *th |
810 | = windows_process.thread_rec (regcache->ptid (), INVALIDATE_CONTEXT); | |
3de88e9a SM |
811 | |
812 | /* Check if TH exists. Windows sometimes uses a non-existent | |
581e13c1 | 813 | thread id in its events. */ |
9a325b7b JB |
814 | if (th == NULL) |
815 | return; | |
816 | ||
817 | if (r < 0) | |
818 | for (r = 0; r < gdbarch_num_regs (regcache->arch ()); r++) | |
819 | windows_store_one_register (regcache, th, r); | |
820 | else | |
821 | windows_store_one_register (regcache, th, r); | |
3cee93ac | 822 | } |
24e60978 | 823 | |
85b25bd9 | 824 | /* See nat/windows-nat.h. */ |
02e423b9 | 825 | |
85b25bd9 | 826 | static windows_solib * |
dc05df57 | 827 | windows_make_so (const char *name, LPVOID load_addr) |
8e860359 | 828 | { |
092ff485 PA |
829 | windows_solib *so = &windows_process.solibs.emplace_back (); |
830 | so->load_addr = load_addr; | |
831 | so->original_name = name; | |
832 | ||
d0d0ab16 | 833 | #ifndef __CYGWIN__ |
a115c6d6 | 834 | char *p; |
b3c613f2 CF |
835 | char buf[__PMAX]; |
836 | char cwd[__PMAX]; | |
3f8ad85b CF |
837 | WIN32_FIND_DATA w32_fd; |
838 | HANDLE h = FindFirstFile(name, &w32_fd); | |
3f8ad85b | 839 | |
6badb179 CF |
840 | if (h == INVALID_HANDLE_VALUE) |
841 | strcpy (buf, name); | |
842 | else | |
3f8ad85b | 843 | { |
c914e0cc CF |
844 | FindClose (h); |
845 | strcpy (buf, name); | |
846 | if (GetCurrentDirectory (MAX_PATH + 1, cwd)) | |
847 | { | |
848 | p = strrchr (buf, '\\'); | |
849 | if (p) | |
850 | p[1] = '\0'; | |
851 | SetCurrentDirectory (buf); | |
852 | GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p); | |
853 | SetCurrentDirectory (cwd); | |
854 | } | |
3f8ad85b | 855 | } |
3ee6f623 CF |
856 | if (strcasecmp (buf, "ntdll.dll") == 0) |
857 | { | |
858 | GetSystemDirectory (buf, sizeof (buf)); | |
859 | strcat (buf, "\\ntdll.dll"); | |
860 | } | |
092ff485 PA |
861 | |
862 | so->name = buf; | |
d0d0ab16 | 863 | #else |
7d941aa3 | 864 | wchar_t buf[__PMAX]; |
d0d0ab16 | 865 | |
b3c613f2 | 866 | buf[0] = 0; |
d0d0ab16 CV |
867 | if (access (name, F_OK) != 0) |
868 | { | |
869 | if (strcasecmp (name, "ntdll.dll") == 0) | |
870 | { | |
871 | GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t)); | |
872 | wcscat (buf, L"\\ntdll.dll"); | |
873 | } | |
874 | } | |
d0d0ab16 | 875 | if (buf[0]) |
85b25bd9 | 876 | { |
30512efa PA |
877 | bool ok = false; |
878 | ||
879 | /* Check how big the output buffer has to be. */ | |
880 | ssize_t size = cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, nullptr, 0); | |
881 | if (size > 0) | |
882 | { | |
883 | /* SIZE includes the null terminator. */ | |
884 | so->name.resize (size - 1); | |
885 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->name.data (), | |
886 | size) == 0) | |
887 | ok = true; | |
888 | } | |
889 | if (!ok) | |
890 | so->name = so->original_name; | |
85b25bd9 | 891 | } |
d0d0ab16 CV |
892 | else |
893 | { | |
60c5c021 | 894 | char *rname = realpath (name, NULL); |
30512efa | 895 | if (rname != nullptr) |
d0d0ab16 | 896 | { |
85b25bd9 | 897 | so->name = rname; |
d0d0ab16 CV |
898 | free (rname); |
899 | } | |
900 | else | |
a0e9b532 | 901 | { |
30512efa | 902 | warning (_("dll path for \"%s\" inaccessible"), name); |
85b25bd9 | 903 | so->name = so->original_name; |
a0e9b532 | 904 | } |
d0d0ab16 | 905 | } |
de1b3c3d | 906 | /* Record cygwin1.dll .text start/end. */ |
85b25bd9 TT |
907 | size_t len = sizeof ("/cygwin1.dll") - 1; |
908 | if (so->name.size () >= len | |
909 | && strcasecmp (so->name.c_str () + so->name.size () - len, | |
910 | "/cygwin1.dll") == 0) | |
de1b3c3d | 911 | { |
de1b3c3d | 912 | asection *text = NULL; |
8e860359 | 913 | |
a115c6d6 | 914 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->name.c_str(), "pei-i386")); |
a244bdca | 915 | |
192b62ce | 916 | if (abfd == NULL) |
de1b3c3d PA |
917 | return so; |
918 | ||
192b62ce TT |
919 | if (bfd_check_format (abfd.get (), bfd_object)) |
920 | text = bfd_get_section_by_name (abfd.get (), ".text"); | |
de1b3c3d PA |
921 | |
922 | if (!text) | |
192b62ce | 923 | return so; |
de1b3c3d | 924 | |
7a9dd1b2 | 925 | /* The symbols in a dll are offset by 0x1000, which is the |
de1b3c3d | 926 | offset from 0 of the first byte in an image - because of the |
581e13c1 | 927 | file header and the section alignment. */ |
26f228db JT |
928 | windows_process.cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) |
929 | load_addr + 0x1000); | |
930 | windows_process.cygwin_load_end = windows_process.cygwin_load_start + | |
931 | bfd_section_size (text); | |
de1b3c3d | 932 | } |
10325bc5 | 933 | #endif |
de1b3c3d PA |
934 | |
935 | return so; | |
8e860359 CF |
936 | } |
937 | ||
a816ba18 | 938 | /* See nat/windows-nat.h. */ |
1cd9feab | 939 | |
a816ba18 | 940 | void |
20489cca | 941 | windows_per_inferior::handle_load_dll (const char *dll_name, LPVOID base) |
24e60978 | 942 | { |
85b25bd9 TT |
943 | windows_solib *solib = windows_make_so (dll_name, base); |
944 | DEBUG_EVENTS ("Loading dll \"%s\" at %s.", solib->name.c_str (), | |
945 | host_address_to_string (solib->load_addr)); | |
3cb8e7f6 CF |
946 | } |
947 | ||
a816ba18 | 948 | /* See nat/windows-nat.h. */ |
3be75f87 | 949 | |
a816ba18 | 950 | void |
20489cca | 951 | windows_per_inferior::handle_unload_dll () |
d3ff4a77 | 952 | { |
d3653bf6 | 953 | LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll; |
d3ff4a77 | 954 | |
20489cca TT |
955 | auto iter = std::remove_if (windows_process.solibs.begin (), |
956 | windows_process.solibs.end (), | |
85b25bd9 | 957 | [&] (windows_solib &lib) |
d0e449a1 | 958 | { |
85b25bd9 | 959 | if (lib.load_addr == lpBaseOfDll) |
d0e449a1 | 960 | { |
85b25bd9 TT |
961 | DEBUG_EVENTS ("Unloading dll \"%s\".", lib.name.c_str ()); |
962 | return true; | |
d0e449a1 | 963 | } |
85b25bd9 TT |
964 | return false; |
965 | }); | |
966 | ||
20489cca | 967 | if (iter != windows_process.solibs.end ()) |
85b25bd9 | 968 | { |
20489cca | 969 | windows_process.solibs.erase (iter, windows_process.solibs.end ()); |
85b25bd9 | 970 | return; |
d0e449a1 | 971 | } |
3929abe9 | 972 | |
ecc13e53 JB |
973 | /* We did not find any DLL that was previously loaded at this address, |
974 | so register a complaint. We do not report an error, because we have | |
975 | observed that this may be happening under some circumstances. For | |
976 | instance, running 32bit applications on x64 Windows causes us to receive | |
977 | 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these | |
978 | events are apparently caused by the WOW layer, the interface between | |
979 | 32bit and 64bit worlds). */ | |
b98664d3 | 980 | complaint (_("dll starting at %s not found."), |
ecc13e53 | 981 | host_address_to_string (lpBaseOfDll)); |
bf469271 PA |
982 | } |
983 | ||
581e13c1 | 984 | /* Clear list of loaded DLLs. */ |
3ee6f623 | 985 | static void |
dc05df57 | 986 | windows_clear_solib (void) |
450005e7 | 987 | { |
20489cca | 988 | windows_process.solibs.clear (); |
450005e7 | 989 | } |
295732ea | 990 | |
463888ab | 991 | static void |
0b39b52e | 992 | signal_event_command (const char *args, int from_tty) |
463888ab РИ |
993 | { |
994 | uintptr_t event_id = 0; | |
995 | char *endargs = NULL; | |
996 | ||
997 | if (args == NULL) | |
998 | error (_("signal-event requires an argument (integer event id)")); | |
999 | ||
1000 | event_id = strtoumax (args, &endargs, 10); | |
1001 | ||
1002 | if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) || | |
1003 | ((HANDLE) event_id == INVALID_HANDLE_VALUE)) | |
1004 | error (_("Failed to convert `%s' to event id"), args); | |
1005 | ||
1006 | SetEvent ((HANDLE) event_id); | |
1007 | CloseHandle ((HANDLE) event_id); | |
1008 | } | |
1009 | ||
d41b524f TT |
1010 | /* See nat/windows-nat.h. */ |
1011 | ||
1012 | int | |
20489cca | 1013 | windows_per_inferior::handle_output_debug_string |
0578e87f | 1014 | (struct target_waitstatus *ourstatus) |
3cee93ac | 1015 | { |
a244bdca | 1016 | int retval = 0; |
3cee93ac | 1017 | |
66920317 TT |
1018 | gdb::unique_xmalloc_ptr<char> s |
1019 | = (target_read_string | |
1020 | ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData, | |
1021 | 1024)); | |
1022 | if (s == nullptr || !*(s.get ())) | |
a244bdca | 1023 | /* nothing to do */; |
e83e4e24 | 1024 | else if (!startswith (s.get (), _CYGWIN_SIGNAL_STRING)) |
3cee93ac | 1025 | { |
10325bc5 | 1026 | #ifdef __CYGWIN__ |
e83e4e24 | 1027 | if (!startswith (s.get (), "cYg")) |
10325bc5 | 1028 | #endif |
040ea00b | 1029 | { |
e83e4e24 | 1030 | char *p = strchr (s.get (), '\0'); |
040ea00b | 1031 | |
e83e4e24 | 1032 | if (p > s.get () && *--p == '\n') |
040ea00b | 1033 | *p = '\0'; |
e83e4e24 | 1034 | warning (("%s"), s.get ()); |
040ea00b | 1035 | } |
3cee93ac | 1036 | } |
f20c58f5 | 1037 | #ifdef __CYGWIN__ |
d3a09475 | 1038 | else |
3cee93ac | 1039 | { |
e433bca4 JT |
1040 | /* Got a cygwin signal marker. A cygwin signal marker is |
1041 | followed by the signal number itself, and (since Cygwin 1.7) | |
1042 | the thread id, and the address of a saved context in the | |
1043 | inferior (That context has an IP which is the return address | |
1044 | in "user" code of the cygwin internal signal handling code, | |
1045 | but is not otherwise usable). | |
1046 | ||
1047 | Tell gdb to treat this like the given thread issued a real | |
1048 | signal. */ | |
3cee93ac | 1049 | char *p; |
e83e4e24 | 1050 | int sig = strtol (s.get () + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0); |
0ae534d2 | 1051 | gdb_signal gotasig = gdb_signal_from_host (sig); |
e433bca4 | 1052 | LPCVOID x = 0; |
c62fa0e2 | 1053 | |
0714f9bf | 1054 | if (gotasig) |
a244bdca | 1055 | { |
183be222 | 1056 | ourstatus->set_stopped (gotasig); |
a244bdca CF |
1057 | retval = strtoul (p, &p, 0); |
1058 | if (!retval) | |
ab4ee614 | 1059 | retval = current_event.dwThreadId; |
e433bca4 JT |
1060 | else |
1061 | x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0); | |
a244bdca | 1062 | } |
e433bca4 JT |
1063 | |
1064 | DEBUG_EVENTS ("gdb: cygwin signal %d, thread 0x%x, CONTEXT @ %p", | |
1065 | gotasig, retval, x); | |
3cee93ac | 1066 | } |
cb832706 | 1067 | #endif |
3cee93ac | 1068 | |
a244bdca | 1069 | return retval; |
3cee93ac | 1070 | } |
24e60978 | 1071 | |
c1748f97 PM |
1072 | static int |
1073 | display_selector (HANDLE thread, DWORD sel) | |
1074 | { | |
1075 | LDT_ENTRY info; | |
46f9f931 HD |
1076 | BOOL ret; |
1077 | #ifdef __x86_64__ | |
0578e87f | 1078 | if (windows_process.wow64_process) |
46f9f931 HD |
1079 | ret = Wow64GetThreadSelectorEntry (thread, sel, &info); |
1080 | else | |
1081 | #endif | |
1082 | ret = GetThreadSelectorEntry (thread, sel, &info); | |
1083 | if (ret) | |
c1748f97 PM |
1084 | { |
1085 | int base, limit; | |
6cb06a8c | 1086 | gdb_printf ("0x%03x: ", (unsigned) sel); |
c1748f97 | 1087 | if (!info.HighWord.Bits.Pres) |
baa93fa6 | 1088 | { |
0426ad51 | 1089 | gdb_puts ("Segment not present\n"); |
baa93fa6 CF |
1090 | return 0; |
1091 | } | |
c1748f97 PM |
1092 | base = (info.HighWord.Bits.BaseHi << 24) + |
1093 | (info.HighWord.Bits.BaseMid << 16) | |
1094 | + info.BaseLow; | |
1095 | limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; | |
1096 | if (info.HighWord.Bits.Granularity) | |
caad7706 | 1097 | limit = (limit << 12) | 0xfff; |
6cb06a8c | 1098 | gdb_printf ("base=0x%08x limit=0x%08x", base, limit); |
c1748f97 | 1099 | if (info.HighWord.Bits.Default_Big) |
0426ad51 | 1100 | gdb_puts(" 32-bit "); |
c1748f97 | 1101 | else |
0426ad51 | 1102 | gdb_puts(" 16-bit "); |
c1748f97 PM |
1103 | switch ((info.HighWord.Bits.Type & 0xf) >> 1) |
1104 | { | |
1105 | case 0: | |
0426ad51 | 1106 | gdb_puts ("Data (Read-Only, Exp-up"); |
baa93fa6 | 1107 | break; |
c1748f97 | 1108 | case 1: |
0426ad51 | 1109 | gdb_puts ("Data (Read/Write, Exp-up"); |
baa93fa6 | 1110 | break; |
c1748f97 | 1111 | case 2: |
0426ad51 | 1112 | gdb_puts ("Unused segment ("); |
baa93fa6 | 1113 | break; |
c1748f97 | 1114 | case 3: |
0426ad51 | 1115 | gdb_puts ("Data (Read/Write, Exp-down"); |
baa93fa6 | 1116 | break; |
c1748f97 | 1117 | case 4: |
0426ad51 | 1118 | gdb_puts ("Code (Exec-Only, N.Conf"); |
baa93fa6 | 1119 | break; |
c1748f97 | 1120 | case 5: |
0426ad51 | 1121 | gdb_puts ("Code (Exec/Read, N.Conf"); |
c1748f97 PM |
1122 | break; |
1123 | case 6: | |
0426ad51 | 1124 | gdb_puts ("Code (Exec-Only, Conf"); |
c1748f97 PM |
1125 | break; |
1126 | case 7: | |
0426ad51 | 1127 | gdb_puts ("Code (Exec/Read, Conf"); |
c1748f97 PM |
1128 | break; |
1129 | default: | |
6cb06a8c TT |
1130 | gdb_printf ("Unknown type 0x%lx", |
1131 | (unsigned long) info.HighWord.Bits.Type); | |
c1748f97 PM |
1132 | } |
1133 | if ((info.HighWord.Bits.Type & 0x1) == 0) | |
0426ad51 TT |
1134 | gdb_puts(", N.Acc"); |
1135 | gdb_puts (")\n"); | |
c1748f97 | 1136 | if ((info.HighWord.Bits.Type & 0x10) == 0) |
0426ad51 | 1137 | gdb_puts("System selector "); |
36da255e | 1138 | gdb_printf ("Privilege level = %ld. ", |
6cb06a8c | 1139 | (unsigned long) info.HighWord.Bits.Dpl); |
c1748f97 | 1140 | if (info.HighWord.Bits.Granularity) |
0426ad51 | 1141 | gdb_puts ("Page granular.\n"); |
c1748f97 | 1142 | else |
0426ad51 | 1143 | gdb_puts ("Byte granular.\n"); |
c1748f97 PM |
1144 | return 1; |
1145 | } | |
1146 | else | |
1147 | { | |
5572ce1f PM |
1148 | DWORD err = GetLastError (); |
1149 | if (err == ERROR_NOT_SUPPORTED) | |
6cb06a8c | 1150 | gdb_printf ("Function not supported\n"); |
5572ce1f | 1151 | else |
6cb06a8c | 1152 | gdb_printf ("Invalid selector 0x%x.\n", (unsigned) sel); |
c1748f97 PM |
1153 | return 0; |
1154 | } | |
1155 | } | |
1156 | ||
1157 | static void | |
5fed81ff | 1158 | display_selectors (const char * args, int from_tty) |
c1748f97 | 1159 | { |
50838d1b | 1160 | if (inferior_ptid == null_ptid) |
c1748f97 | 1161 | { |
0426ad51 | 1162 | gdb_puts ("Impossible to display selectors now.\n"); |
c1748f97 PM |
1163 | return; |
1164 | } | |
50838d1b PA |
1165 | |
1166 | windows_thread_info *current_windows_thread | |
0578e87f | 1167 | = windows_process.thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT); |
50838d1b | 1168 | |
c1748f97 PM |
1169 | if (!args) |
1170 | { | |
46f9f931 | 1171 | #ifdef __x86_64__ |
0578e87f | 1172 | if (windows_process.wow64_process) |
46f9f931 | 1173 | { |
0426ad51 | 1174 | gdb_puts ("Selector $cs\n"); |
3c76026d TT |
1175 | display_selector (current_windows_thread->h, |
1176 | current_windows_thread->wow64_context.SegCs); | |
0426ad51 | 1177 | gdb_puts ("Selector $ds\n"); |
3c76026d TT |
1178 | display_selector (current_windows_thread->h, |
1179 | current_windows_thread->wow64_context.SegDs); | |
0426ad51 | 1180 | gdb_puts ("Selector $es\n"); |
3c76026d TT |
1181 | display_selector (current_windows_thread->h, |
1182 | current_windows_thread->wow64_context.SegEs); | |
0426ad51 | 1183 | gdb_puts ("Selector $ss\n"); |
3c76026d TT |
1184 | display_selector (current_windows_thread->h, |
1185 | current_windows_thread->wow64_context.SegSs); | |
0426ad51 | 1186 | gdb_puts ("Selector $fs\n"); |
3c76026d TT |
1187 | display_selector (current_windows_thread->h, |
1188 | current_windows_thread->wow64_context.SegFs); | |
0426ad51 | 1189 | gdb_puts ("Selector $gs\n"); |
3c76026d TT |
1190 | display_selector (current_windows_thread->h, |
1191 | current_windows_thread->wow64_context.SegGs); | |
46f9f931 HD |
1192 | } |
1193 | else | |
1194 | #endif | |
1195 | { | |
0426ad51 | 1196 | gdb_puts ("Selector $cs\n"); |
3c76026d TT |
1197 | display_selector (current_windows_thread->h, |
1198 | current_windows_thread->context.SegCs); | |
0426ad51 | 1199 | gdb_puts ("Selector $ds\n"); |
3c76026d TT |
1200 | display_selector (current_windows_thread->h, |
1201 | current_windows_thread->context.SegDs); | |
0426ad51 | 1202 | gdb_puts ("Selector $es\n"); |
3c76026d TT |
1203 | display_selector (current_windows_thread->h, |
1204 | current_windows_thread->context.SegEs); | |
0426ad51 | 1205 | gdb_puts ("Selector $ss\n"); |
3c76026d TT |
1206 | display_selector (current_windows_thread->h, |
1207 | current_windows_thread->context.SegSs); | |
0426ad51 | 1208 | gdb_puts ("Selector $fs\n"); |
3c76026d TT |
1209 | display_selector (current_windows_thread->h, |
1210 | current_windows_thread->context.SegFs); | |
0426ad51 | 1211 | gdb_puts ("Selector $gs\n"); |
3c76026d TT |
1212 | display_selector (current_windows_thread->h, |
1213 | current_windows_thread->context.SegGs); | |
46f9f931 | 1214 | } |
c1748f97 PM |
1215 | } |
1216 | else | |
1217 | { | |
1218 | int sel; | |
1219 | sel = parse_and_eval_long (args); | |
6cb06a8c | 1220 | gdb_printf ("Selector \"%s\"\n",args); |
3c76026d | 1221 | display_selector (current_windows_thread->h, sel); |
c1748f97 PM |
1222 | } |
1223 | } | |
1224 | ||
8d30e395 | 1225 | /* See nat/windows-nat.h. */ |
7393af7c | 1226 | |
a010605f | 1227 | bool |
20489cca | 1228 | windows_per_inferior::handle_access_violation |
0578e87f | 1229 | (const EXCEPTION_RECORD *rec) |
a010605f TT |
1230 | { |
1231 | #ifdef __CYGWIN__ | |
1232 | /* See if the access violation happened within the cygwin DLL | |
1233 | itself. Cygwin uses a kind of exception handling to deal with | |
1234 | passed-in invalid addresses. gdb should not treat these as real | |
1235 | SEGVs since they will be silently handled by cygwin. A real SEGV | |
1236 | will (theoretically) be caught by cygwin later in the process and | |
1237 | will be sent as a cygwin-specific-signal. So, ignore SEGVs if | |
1238 | they show up within the text segment of the DLL itself. */ | |
1239 | const char *fn; | |
1240 | CORE_ADDR addr = (CORE_ADDR) (uintptr_t) rec->ExceptionAddress; | |
1241 | ||
1242 | if ((!cygwin_exceptions && (addr >= cygwin_load_start | |
1243 | && addr < cygwin_load_end)) | |
1244 | || (find_pc_partial_function (addr, &fn, NULL, NULL) | |
1245 | && startswith (fn, "KERNEL32!IsBad"))) | |
1246 | return true; | |
1247 | #endif | |
1248 | return false; | |
1249 | } | |
1250 | ||
17617f2d EZ |
1251 | /* Resume thread specified by ID, or all artificially suspended |
1252 | threads, if we are continuing execution. KILLED non-zero means we | |
1253 | have killed the inferior, so we should ignore weird errors due to | |
d08bae3d TT |
1254 | threads shutting down. LAST_CALL is true if we expect this to be |
1255 | the last call to continue the inferior -- we are either mourning it | |
1256 | or detaching. */ | |
4cb763d6 | 1257 | BOOL |
d08bae3d TT |
1258 | windows_nat_target::windows_continue (DWORD continue_status, int id, |
1259 | int killed, bool last_call) | |
3cee93ac | 1260 | { |
0578e87f | 1261 | windows_process.desired_stop_thread_id = id; |
0a4afda3 | 1262 | |
0578e87f | 1263 | if (windows_process.matching_pending_stop (debug_events)) |
d08bae3d TT |
1264 | { |
1265 | /* There's no need to really continue, because there's already | |
1266 | another event pending. However, we do need to inform the | |
1267 | event loop of this. */ | |
1268 | serial_event_set (m_wait_event); | |
1269 | return TRUE; | |
1270 | } | |
6537bb24 | 1271 | |
20489cca | 1272 | for (auto &th : windows_process.thread_list) |
0a4afda3 | 1273 | if (id == -1 || id == (int) th->tid) |
6537bb24 | 1274 | { |
46f9f931 | 1275 | #ifdef __x86_64__ |
0578e87f | 1276 | if (windows_process.wow64_process) |
6537bb24 | 1277 | { |
296d3d2e | 1278 | if (th->debug_registers_changed) |
46f9f931 HD |
1279 | { |
1280 | th->wow64_context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; | |
20489cca TT |
1281 | th->wow64_context.Dr0 = windows_process.dr[0]; |
1282 | th->wow64_context.Dr1 = windows_process.dr[1]; | |
1283 | th->wow64_context.Dr2 = windows_process.dr[2]; | |
1284 | th->wow64_context.Dr3 = windows_process.dr[3]; | |
46f9f931 | 1285 | th->wow64_context.Dr6 = DR6_CLEAR_VALUE; |
20489cca | 1286 | th->wow64_context.Dr7 = windows_process.dr[7]; |
296d3d2e | 1287 | th->debug_registers_changed = false; |
46f9f931 HD |
1288 | } |
1289 | if (th->wow64_context.ContextFlags) | |
1290 | { | |
1291 | DWORD ec = 0; | |
1292 | ||
1293 | if (GetExitCodeThread (th->h, &ec) | |
1294 | && ec == STILL_ACTIVE) | |
1295 | { | |
1296 | BOOL status = Wow64SetThreadContext (th->h, | |
1297 | &th->wow64_context); | |
1298 | ||
1299 | if (!killed) | |
1300 | CHECK (status); | |
1301 | } | |
1302 | th->wow64_context.ContextFlags = 0; | |
1303 | } | |
6537bb24 | 1304 | } |
46f9f931 HD |
1305 | else |
1306 | #endif | |
6537bb24 | 1307 | { |
296d3d2e | 1308 | if (th->debug_registers_changed) |
17617f2d | 1309 | { |
46f9f931 | 1310 | th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS; |
20489cca TT |
1311 | th->context.Dr0 = windows_process.dr[0]; |
1312 | th->context.Dr1 = windows_process.dr[1]; | |
1313 | th->context.Dr2 = windows_process.dr[2]; | |
1314 | th->context.Dr3 = windows_process.dr[3]; | |
46f9f931 | 1315 | th->context.Dr6 = DR6_CLEAR_VALUE; |
20489cca | 1316 | th->context.Dr7 = windows_process.dr[7]; |
296d3d2e | 1317 | th->debug_registers_changed = false; |
46f9f931 HD |
1318 | } |
1319 | if (th->context.ContextFlags) | |
1320 | { | |
1321 | DWORD ec = 0; | |
1322 | ||
1323 | if (GetExitCodeThread (th->h, &ec) | |
1324 | && ec == STILL_ACTIVE) | |
1325 | { | |
1326 | BOOL status = SetThreadContext (th->h, &th->context); | |
17617f2d | 1327 | |
46f9f931 HD |
1328 | if (!killed) |
1329 | CHECK (status); | |
1330 | } | |
1331 | th->context.ContextFlags = 0; | |
17617f2d | 1332 | } |
6537bb24 | 1333 | } |
98a03287 | 1334 | th->resume (); |
6537bb24 | 1335 | } |
0a4afda3 TT |
1336 | else |
1337 | { | |
1338 | /* When single-stepping a specific thread, other threads must | |
1339 | be suspended. */ | |
1340 | th->suspend (); | |
1341 | } | |
6537bb24 | 1342 | |
6b09f134 | 1343 | std::optional<unsigned> err; |
4cb763d6 | 1344 | do_synchronously ([&] () |
02d04eac | 1345 | { |
4cb763d6 TT |
1346 | if (!continue_last_debug_event (continue_status, debug_events)) |
1347 | err = (unsigned) GetLastError (); | |
d08bae3d TT |
1348 | /* On the last call, do not block waiting for an event that will |
1349 | never come. */ | |
1350 | return !last_call; | |
4cb763d6 TT |
1351 | }); |
1352 | ||
1353 | if (err.has_value ()) | |
602971b3 TT |
1354 | throw_winerror_with_name (_("Failed to resume program execution" |
1355 | " - ContinueDebugEvent failed"), | |
1356 | *err); | |
68ffc902 | 1357 | |
4cb763d6 | 1358 | return TRUE; |
3cee93ac CF |
1359 | } |
1360 | ||
d6dc8049 CF |
1361 | /* Called in pathological case where Windows fails to send a |
1362 | CREATE_PROCESS_DEBUG_EVENT after an attach. */ | |
55176502 TT |
1363 | DWORD |
1364 | windows_nat_target::fake_create_process () | |
3ade5333 | 1365 | { |
0578e87f TT |
1366 | windows_process.handle |
1367 | = OpenProcess (PROCESS_ALL_ACCESS, FALSE, | |
1368 | windows_process.current_event.dwProcessId); | |
1369 | if (windows_process.handle != NULL) | |
20489cca | 1370 | windows_process.open_process_used = 1; |
bf25528d CF |
1371 | else |
1372 | { | |
02d04eac | 1373 | unsigned err = (unsigned) GetLastError (); |
602971b3 | 1374 | throw_winerror_with_name (_("OpenProcess call failed"), err); |
bf25528d CF |
1375 | /* We can not debug anything in that case. */ |
1376 | } | |
55176502 | 1377 | add_thread (ptid_t (windows_process.current_event.dwProcessId, 0, |
0578e87f TT |
1378 | windows_process.current_event.dwThreadId), |
1379 | windows_process.current_event.u.CreateThread.hThread, | |
1380 | windows_process.current_event.u.CreateThread.lpThreadLocalBase, | |
50838d1b | 1381 | true /* main_thread_p */); |
0578e87f | 1382 | return windows_process.current_event.dwThreadId; |
3ade5333 CF |
1383 | } |
1384 | ||
f6ac5f3d PA |
1385 | void |
1386 | windows_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
a244bdca | 1387 | { |
876d1cd7 | 1388 | windows_thread_info *th; |
a244bdca CF |
1389 | DWORD continue_status = DBG_CONTINUE; |
1390 | ||
2dc38344 | 1391 | /* A specific PTID means `step only this thread id'. */ |
d7e15655 | 1392 | int resume_all = ptid == minus_one_ptid; |
2dc38344 PA |
1393 | |
1394 | /* If we're continuing all threads, it's the current inferior that | |
1395 | should be handled specially. */ | |
1396 | if (resume_all) | |
1397 | ptid = inferior_ptid; | |
a244bdca | 1398 | |
a493e3e2 | 1399 | if (sig != GDB_SIGNAL_0) |
a244bdca | 1400 | { |
0578e87f TT |
1401 | if (windows_process.current_event.dwDebugEventCode |
1402 | != EXCEPTION_DEBUG_EVENT) | |
a244bdca | 1403 | { |
4ef367bf | 1404 | DEBUG_EXCEPT ("Cannot continue with signal %d here.", sig); |
a244bdca | 1405 | } |
0578e87f | 1406 | else if (sig == windows_process.last_sig) |
a244bdca CF |
1407 | continue_status = DBG_EXCEPTION_NOT_HANDLED; |
1408 | else | |
1409 | #if 0 | |
1410 | /* This code does not seem to work, because | |
1411 | the kernel does probably not consider changes in the ExceptionRecord | |
1412 | structure when passing the exception to the inferior. | |
1413 | Note that this seems possible in the exception handler itself. */ | |
1414 | { | |
73c13fe6 TT |
1415 | for (const xlate_exception &x : xlate) |
1416 | if (x.us == sig) | |
a244bdca | 1417 | { |
581e13c1 | 1418 | current_event.u.Exception.ExceptionRecord.ExceptionCode |
73c13fe6 | 1419 | = x.them; |
a244bdca CF |
1420 | continue_status = DBG_EXCEPTION_NOT_HANDLED; |
1421 | break; | |
1422 | } | |
1423 | if (continue_status == DBG_CONTINUE) | |
1424 | { | |
4ef367bf | 1425 | DEBUG_EXCEPT ("Cannot continue with signal %d.", sig); |
a244bdca CF |
1426 | } |
1427 | } | |
1428 | #endif | |
4ef367bf | 1429 | DEBUG_EXCEPT ("Can only continue with received signal %d.", |
0578e87f | 1430 | windows_process.last_sig); |
a244bdca CF |
1431 | } |
1432 | ||
0578e87f | 1433 | windows_process.last_sig = GDB_SIGNAL_0; |
a244bdca | 1434 | |
4ef367bf TT |
1435 | DEBUG_EXEC ("pid=%d, tid=0x%x, step=%d, sig=%d", |
1436 | ptid.pid (), (unsigned) ptid.lwp (), step, sig); | |
a244bdca | 1437 | |
581e13c1 | 1438 | /* Get context for currently selected thread. */ |
0578e87f | 1439 | th = windows_process.thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT); |
a244bdca CF |
1440 | if (th) |
1441 | { | |
46f9f931 | 1442 | #ifdef __x86_64__ |
0578e87f | 1443 | if (windows_process.wow64_process) |
a244bdca | 1444 | { |
46f9f931 HD |
1445 | if (step) |
1446 | { | |
1447 | /* Single step by setting t bit. */ | |
9c742269 | 1448 | regcache *regcache = get_thread_regcache (inferior_thread ()); |
46f9f931 HD |
1449 | struct gdbarch *gdbarch = regcache->arch (); |
1450 | fetch_registers (regcache, gdbarch_ps_regnum (gdbarch)); | |
1451 | th->wow64_context.EFlags |= FLAG_TRACE_BIT; | |
1452 | } | |
a244bdca | 1453 | |
46f9f931 HD |
1454 | if (th->wow64_context.ContextFlags) |
1455 | { | |
296d3d2e | 1456 | if (th->debug_registers_changed) |
46f9f931 | 1457 | { |
20489cca TT |
1458 | th->wow64_context.Dr0 = windows_process.dr[0]; |
1459 | th->wow64_context.Dr1 = windows_process.dr[1]; | |
1460 | th->wow64_context.Dr2 = windows_process.dr[2]; | |
1461 | th->wow64_context.Dr3 = windows_process.dr[3]; | |
46f9f931 | 1462 | th->wow64_context.Dr6 = DR6_CLEAR_VALUE; |
20489cca | 1463 | th->wow64_context.Dr7 = windows_process.dr[7]; |
296d3d2e | 1464 | th->debug_registers_changed = false; |
46f9f931 HD |
1465 | } |
1466 | CHECK (Wow64SetThreadContext (th->h, &th->wow64_context)); | |
1467 | th->wow64_context.ContextFlags = 0; | |
1468 | } | |
1469 | } | |
1470 | else | |
1471 | #endif | |
a244bdca | 1472 | { |
46f9f931 | 1473 | if (step) |
a244bdca | 1474 | { |
46f9f931 | 1475 | /* Single step by setting t bit. */ |
9c742269 | 1476 | regcache *regcache = get_thread_regcache (inferior_thread ()); |
46f9f931 HD |
1477 | struct gdbarch *gdbarch = regcache->arch (); |
1478 | fetch_registers (regcache, gdbarch_ps_regnum (gdbarch)); | |
1479 | th->context.EFlags |= FLAG_TRACE_BIT; | |
1480 | } | |
1481 | ||
1482 | if (th->context.ContextFlags) | |
1483 | { | |
296d3d2e | 1484 | if (th->debug_registers_changed) |
46f9f931 | 1485 | { |
20489cca TT |
1486 | th->context.Dr0 = windows_process.dr[0]; |
1487 | th->context.Dr1 = windows_process.dr[1]; | |
1488 | th->context.Dr2 = windows_process.dr[2]; | |
1489 | th->context.Dr3 = windows_process.dr[3]; | |
46f9f931 | 1490 | th->context.Dr6 = DR6_CLEAR_VALUE; |
20489cca | 1491 | th->context.Dr7 = windows_process.dr[7]; |
296d3d2e | 1492 | th->debug_registers_changed = false; |
46f9f931 HD |
1493 | } |
1494 | CHECK (SetThreadContext (th->h, &th->context)); | |
1495 | th->context.ContextFlags = 0; | |
a244bdca | 1496 | } |
a244bdca CF |
1497 | } |
1498 | } | |
1499 | ||
1500 | /* Allow continuing with the same signal that interrupted us. | |
581e13c1 | 1501 | Otherwise complain. */ |
a244bdca | 1502 | |
2dc38344 | 1503 | if (resume_all) |
17617f2d | 1504 | windows_continue (continue_status, -1, 0); |
2dc38344 | 1505 | else |
7c7411bc | 1506 | windows_continue (continue_status, ptid.lwp (), 0); |
a244bdca CF |
1507 | } |
1508 | ||
c88afe9c | 1509 | /* Interrupt the inferior. */ |
695de547 | 1510 | |
c88afe9c TT |
1511 | void |
1512 | windows_nat_target::interrupt () | |
1513 | { | |
1514 | DEBUG_EVENTS ("interrupt"); | |
0363df3d | 1515 | #ifdef __x86_64__ |
0578e87f | 1516 | if (windows_process.wow64_process) |
0363df3d HD |
1517 | { |
1518 | /* Call DbgUiRemoteBreakin of the 32bit ntdll.dll in the target process. | |
1519 | DebugBreakProcess would call the one of the 64bit ntdll.dll, which | |
1520 | can't be correctly handled by gdb. */ | |
20489cca | 1521 | if (windows_process.wow64_dbgbreak == nullptr) |
0363df3d HD |
1522 | { |
1523 | CORE_ADDR addr; | |
1524 | if (!find_minimal_symbol_address ("ntdll!DbgUiRemoteBreakin", | |
1525 | &addr, 0)) | |
20489cca | 1526 | windows_process.wow64_dbgbreak = (void *) addr; |
0363df3d HD |
1527 | } |
1528 | ||
20489cca | 1529 | if (windows_process.wow64_dbgbreak != nullptr) |
0363df3d | 1530 | { |
0578e87f | 1531 | HANDLE thread = CreateRemoteThread (windows_process.handle, NULL, |
0363df3d | 1532 | 0, (LPTHREAD_START_ROUTINE) |
20489cca TT |
1533 | windows_process.wow64_dbgbreak, |
1534 | NULL, 0, NULL); | |
0363df3d | 1535 | if (thread) |
c88afe9c TT |
1536 | { |
1537 | CloseHandle (thread); | |
1538 | return; | |
1539 | } | |
0363df3d HD |
1540 | } |
1541 | } | |
1542 | else | |
1543 | #endif | |
c88afe9c TT |
1544 | if (DebugBreakProcess (windows_process.handle)) |
1545 | return; | |
1546 | warning (_("Could not interrupt program. " | |
1547 | "Press Ctrl-c in the program console.")); | |
1548 | } | |
695de547 | 1549 | |
c88afe9c TT |
1550 | void |
1551 | windows_nat_target::pass_ctrlc () | |
1552 | { | |
1553 | interrupt (); | |
695de547 CF |
1554 | } |
1555 | ||
4cb763d6 | 1556 | /* Get the next event from the child. Returns the thread ptid. */ |
5b6d1e4f | 1557 | |
4cb763d6 TT |
1558 | ptid_t |
1559 | windows_nat_target::get_windows_debug_event | |
1560 | (int pid, struct target_waitstatus *ourstatus, target_wait_flags options) | |
1e37c281 | 1561 | { |
8a892701 | 1562 | DWORD continue_status, event_code; |
e6ad66bd | 1563 | DWORD thread_id = 0; |
1e37c281 | 1564 | |
0a4afda3 TT |
1565 | /* If there is a relevant pending stop, report it now. See the |
1566 | comment by the definition of "pending_stops" for details on why | |
1567 | this is needed. */ | |
6b09f134 | 1568 | std::optional<pending_stop> stop |
0578e87f | 1569 | = windows_process.fetch_pending_stop (debug_events); |
d2977bc4 | 1570 | if (stop.has_value ()) |
0a4afda3 | 1571 | { |
d2977bc4 TT |
1572 | thread_id = stop->thread_id; |
1573 | *ourstatus = stop->status; | |
0a4afda3 | 1574 | |
0578e87f TT |
1575 | ptid_t ptid (windows_process.current_event.dwProcessId, thread_id); |
1576 | windows_thread_info *th | |
1577 | = windows_process.thread_rec (ptid, INVALIDATE_CONTEXT); | |
e133de49 | 1578 | th->reload_context = true; |
0a4afda3 | 1579 | |
4cb763d6 | 1580 | return ptid; |
0a4afda3 TT |
1581 | } |
1582 | ||
0578e87f TT |
1583 | windows_process.last_sig = GDB_SIGNAL_0; |
1584 | DEBUG_EVENT *current_event = &windows_process.current_event; | |
9d3789f7 | 1585 | |
d08bae3d TT |
1586 | if ((options & TARGET_WNOHANG) != 0 && !m_debug_event_pending) |
1587 | { | |
1588 | ourstatus->set_ignore (); | |
1589 | return minus_one_ptid; | |
1590 | } | |
1591 | ||
4cb763d6 | 1592 | wait_for_debug_event_main_thread (&windows_process.current_event); |
1e37c281 | 1593 | |
1e37c281 | 1594 | continue_status = DBG_CONTINUE; |
1e37c281 | 1595 | |
0578e87f | 1596 | event_code = windows_process.current_event.dwDebugEventCode; |
183be222 | 1597 | ourstatus->set_spurious (); |
8a892701 CF |
1598 | |
1599 | switch (event_code) | |
1e37c281 JM |
1600 | { |
1601 | case CREATE_THREAD_DEBUG_EVENT: | |
4ef367bf | 1602 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1603 | (unsigned) current_event->dwProcessId, |
1604 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1605 | "CREATE_THREAD_DEBUG_EVENT"); |
20489cca | 1606 | if (windows_process.saw_create != 1) |
3ade5333 | 1607 | { |
0578e87f | 1608 | inferior *inf = find_inferior_pid (this, current_event->dwProcessId); |
20489cca | 1609 | if (!windows_process.saw_create && inf->attach_flag) |
3ade5333 | 1610 | { |
d6dc8049 CF |
1611 | /* Kludge around a Windows bug where first event is a create |
1612 | thread event. Caused when attached process does not have | |
581e13c1 | 1613 | a main thread. */ |
e6ad66bd JT |
1614 | thread_id = fake_create_process (); |
1615 | if (thread_id) | |
20489cca | 1616 | windows_process.saw_create++; |
3ade5333 CF |
1617 | } |
1618 | break; | |
1619 | } | |
581e13c1 | 1620 | /* Record the existence of this thread. */ |
0578e87f | 1621 | thread_id = current_event->dwThreadId; |
55176502 | 1622 | add_thread |
0578e87f TT |
1623 | (ptid_t (current_event->dwProcessId, current_event->dwThreadId, 0), |
1624 | current_event->u.CreateThread.hThread, | |
1625 | current_event->u.CreateThread.lpThreadLocalBase, | |
c559d709 | 1626 | false /* main_thread_p */); |
711e434b | 1627 | |
1e37c281 JM |
1628 | break; |
1629 | ||
1630 | case EXIT_THREAD_DEBUG_EVENT: | |
4ef367bf | 1631 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1632 | (unsigned) current_event->dwProcessId, |
1633 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1634 | "EXIT_THREAD_DEBUG_EVENT"); |
55176502 TT |
1635 | delete_thread (ptid_t (current_event->dwProcessId, |
1636 | current_event->dwThreadId, 0), | |
1637 | current_event->u.ExitThread.dwExitCode, | |
1638 | false /* main_thread_p */); | |
1e37c281 JM |
1639 | break; |
1640 | ||
1641 | case CREATE_PROCESS_DEBUG_EVENT: | |
4ef367bf | 1642 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1643 | (unsigned) current_event->dwProcessId, |
1644 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1645 | "CREATE_PROCESS_DEBUG_EVENT"); |
0578e87f | 1646 | CloseHandle (current_event->u.CreateProcessInfo.hFile); |
20489cca | 1647 | if (++windows_process.saw_create != 1) |
bf25528d | 1648 | break; |
1e37c281 | 1649 | |
0578e87f | 1650 | windows_process.handle = current_event->u.CreateProcessInfo.hProcess; |
581e13c1 | 1651 | /* Add the main thread. */ |
55176502 | 1652 | add_thread |
0578e87f TT |
1653 | (ptid_t (current_event->dwProcessId, |
1654 | current_event->dwThreadId, 0), | |
1655 | current_event->u.CreateProcessInfo.hThread, | |
1656 | current_event->u.CreateProcessInfo.lpThreadLocalBase, | |
c559d709 | 1657 | true /* main_thread_p */); |
0578e87f | 1658 | thread_id = current_event->dwThreadId; |
1e37c281 JM |
1659 | break; |
1660 | ||
1661 | case EXIT_PROCESS_DEBUG_EVENT: | |
4ef367bf | 1662 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1663 | (unsigned) current_event->dwProcessId, |
1664 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1665 | "EXIT_PROCESS_DEBUG_EVENT"); |
20489cca | 1666 | if (!windows_process.windows_initialization_done) |
16d905e2 | 1667 | { |
223ffa71 | 1668 | target_terminal::ours (); |
bc1e6c81 | 1669 | target_mourn_inferior (inferior_ptid); |
16d905e2 | 1670 | error (_("During startup program exited with code 0x%x."), |
0578e87f | 1671 | (unsigned int) current_event->u.ExitProcess.dwExitCode); |
16d905e2 | 1672 | } |
20489cca | 1673 | else if (windows_process.saw_create == 1) |
16d905e2 | 1674 | { |
55176502 TT |
1675 | delete_thread (ptid_t (current_event->dwProcessId, |
1676 | current_event->dwThreadId, 0), | |
1677 | 0, true /* main_thread_p */); | |
0578e87f | 1678 | DWORD exit_status = current_event->u.ExitProcess.dwExitCode; |
559e7e50 EZ |
1679 | /* If the exit status looks like a fatal exception, but we |
1680 | don't recognize the exception's code, make the original | |
1681 | exit status value available, to avoid losing | |
1682 | information. */ | |
1683 | int exit_signal | |
1684 | = WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1; | |
1685 | if (exit_signal == -1) | |
183be222 | 1686 | ourstatus->set_exited (exit_status); |
559e7e50 | 1687 | else |
183be222 SM |
1688 | ourstatus->set_signalled (gdb_signal_from_host (exit_signal)); |
1689 | ||
0578e87f | 1690 | thread_id = current_event->dwThreadId; |
16d905e2 | 1691 | } |
8a892701 | 1692 | break; |
1e37c281 JM |
1693 | |
1694 | case LOAD_DLL_DEBUG_EVENT: | |
4ef367bf | 1695 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1696 | (unsigned) current_event->dwProcessId, |
1697 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1698 | "LOAD_DLL_DEBUG_EVENT"); |
0578e87f | 1699 | CloseHandle (current_event->u.LoadDll.hFile); |
20489cca TT |
1700 | if (windows_process.saw_create != 1 |
1701 | || ! windows_process.windows_initialization_done) | |
dfe7f3ac | 1702 | break; |
0578e87f TT |
1703 | try |
1704 | { | |
1705 | windows_process.dll_loaded_event (); | |
1706 | } | |
1707 | catch (const gdb_exception &ex) | |
1708 | { | |
1709 | exception_print (gdb_stderr, ex); | |
1710 | } | |
183be222 | 1711 | ourstatus->set_loaded (); |
0578e87f | 1712 | thread_id = current_event->dwThreadId; |
1e37c281 JM |
1713 | break; |
1714 | ||
1715 | case UNLOAD_DLL_DEBUG_EVENT: | |
4ef367bf | 1716 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1717 | (unsigned) current_event->dwProcessId, |
1718 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1719 | "UNLOAD_DLL_DEBUG_EVENT"); |
20489cca TT |
1720 | if (windows_process.saw_create != 1 |
1721 | || ! windows_process.windows_initialization_done) | |
dfe7f3ac | 1722 | break; |
0578e87f TT |
1723 | try |
1724 | { | |
1725 | windows_process.handle_unload_dll (); | |
1726 | } | |
1727 | catch (const gdb_exception &ex) | |
1728 | { | |
1729 | exception_print (gdb_stderr, ex); | |
1730 | } | |
183be222 | 1731 | ourstatus->set_loaded (); |
0578e87f | 1732 | thread_id = current_event->dwThreadId; |
d3ff4a77 | 1733 | break; |
1e37c281 JM |
1734 | |
1735 | case EXCEPTION_DEBUG_EVENT: | |
4ef367bf | 1736 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1737 | (unsigned) current_event->dwProcessId, |
1738 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1739 | "EXCEPTION_DEBUG_EVENT"); |
20489cca | 1740 | if (windows_process.saw_create != 1) |
dfe7f3ac | 1741 | break; |
0578e87f | 1742 | switch (windows_process.handle_exception (ourstatus, debug_exceptions)) |
24cdb46e РИ |
1743 | { |
1744 | case HANDLE_EXCEPTION_UNHANDLED: | |
1745 | default: | |
1746 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1747 | break; | |
1748 | case HANDLE_EXCEPTION_HANDLED: | |
0578e87f | 1749 | thread_id = current_event->dwThreadId; |
24cdb46e РИ |
1750 | break; |
1751 | case HANDLE_EXCEPTION_IGNORED: | |
1752 | continue_status = DBG_CONTINUE; | |
1753 | break; | |
1754 | } | |
1e37c281 JM |
1755 | break; |
1756 | ||
581e13c1 | 1757 | case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */ |
4ef367bf | 1758 | DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s", |
0578e87f TT |
1759 | (unsigned) current_event->dwProcessId, |
1760 | (unsigned) current_event->dwThreadId, | |
4ef367bf | 1761 | "OUTPUT_DEBUG_STRING_EVENT"); |
20489cca | 1762 | if (windows_process.saw_create != 1) |
dfe7f3ac | 1763 | break; |
0578e87f | 1764 | thread_id = windows_process.handle_output_debug_string (ourstatus); |
1e37c281 | 1765 | break; |
9d3789f7 | 1766 | |
1e37c281 | 1767 | default: |
20489cca | 1768 | if (windows_process.saw_create != 1) |
dfe7f3ac | 1769 | break; |
6cb06a8c | 1770 | gdb_printf ("gdb: kernel event for pid=%u tid=0x%x\n", |
0578e87f TT |
1771 | (unsigned) current_event->dwProcessId, |
1772 | (unsigned) current_event->dwThreadId); | |
6cb06a8c | 1773 | gdb_printf (" unknown event code %u\n", |
0578e87f | 1774 | (unsigned) current_event->dwDebugEventCode); |
1e37c281 JM |
1775 | break; |
1776 | } | |
1777 | ||
20489cca | 1778 | if (!thread_id || windows_process.saw_create != 1) |
a244bdca | 1779 | { |
0578e87f TT |
1780 | CHECK (windows_continue (continue_status, |
1781 | windows_process.desired_stop_thread_id, 0)); | |
0a4afda3 | 1782 | } |
0578e87f TT |
1783 | else if (windows_process.desired_stop_thread_id != -1 |
1784 | && windows_process.desired_stop_thread_id != thread_id) | |
0a4afda3 TT |
1785 | { |
1786 | /* Pending stop. See the comment by the definition of | |
1787 | "pending_stops" for details on why this is needed. */ | |
4ef367bf TT |
1788 | DEBUG_EVENTS ("get_windows_debug_event - " |
1789 | "unexpected stop in 0x%x (expecting 0x%x)", | |
0578e87f | 1790 | thread_id, windows_process.desired_stop_thread_id); |
0a4afda3 | 1791 | |
0578e87f TT |
1792 | if (current_event->dwDebugEventCode == EXCEPTION_DEBUG_EVENT |
1793 | && ((current_event->u.Exception.ExceptionRecord.ExceptionCode | |
13302e95 | 1794 | == EXCEPTION_BREAKPOINT) |
0578e87f | 1795 | || (current_event->u.Exception.ExceptionRecord.ExceptionCode |
13302e95 | 1796 | == STATUS_WX86_BREAKPOINT)) |
20489cca | 1797 | && windows_process.windows_initialization_done) |
0a4afda3 | 1798 | { |
0578e87f TT |
1799 | ptid_t ptid = ptid_t (current_event->dwProcessId, thread_id, 0); |
1800 | windows_thread_info *th | |
1801 | = windows_process.thread_rec (ptid, INVALIDATE_CONTEXT); | |
0a4afda3 | 1802 | th->stopped_at_software_breakpoint = true; |
7be2bb4f | 1803 | th->pc_adjusted = false; |
0a4afda3 | 1804 | } |
0578e87f TT |
1805 | windows_process.pending_stops.push_back |
1806 | ({thread_id, *ourstatus, windows_process.current_event}); | |
0a4afda3 | 1807 | thread_id = 0; |
0578e87f TT |
1808 | CHECK (windows_continue (continue_status, |
1809 | windows_process.desired_stop_thread_id, 0)); | |
a244bdca | 1810 | } |
1e37c281 | 1811 | |
4cb763d6 TT |
1812 | if (thread_id == 0) |
1813 | return null_ptid; | |
1814 | return ptid_t (windows_process.current_event.dwProcessId, thread_id, 0); | |
1e37c281 JM |
1815 | } |
1816 | ||
2dc38344 | 1817 | /* Wait for interesting events to occur in the target process. */ |
f6ac5f3d PA |
1818 | ptid_t |
1819 | windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
b60cea74 | 1820 | target_wait_flags options) |
24e60978 | 1821 | { |
2dc38344 | 1822 | int pid = -1; |
39f77062 | 1823 | |
24e60978 SC |
1824 | /* We loop when we get a non-standard exception rather than return |
1825 | with a SPURIOUS because resume can try and step or modify things, | |
3cee93ac | 1826 | which needs a current_thread->h. But some of these exceptions mark |
24e60978 | 1827 | the birth or death of threads, which mean that the current thread |
581e13c1 | 1828 | isn't necessarily what you think it is. */ |
24e60978 SC |
1829 | |
1830 | while (1) | |
450005e7 | 1831 | { |
4cb763d6 | 1832 | ptid_t result = get_windows_debug_event (pid, ourstatus, options); |
c57918b2 | 1833 | |
4cb763d6 | 1834 | if (result != null_ptid) |
0a4afda3 | 1835 | { |
183be222 SM |
1836 | if (ourstatus->kind () != TARGET_WAITKIND_EXITED |
1837 | && ourstatus->kind () != TARGET_WAITKIND_SIGNALLED) | |
0a4afda3 | 1838 | { |
0578e87f TT |
1839 | windows_thread_info *th |
1840 | = windows_process.thread_rec (result, INVALIDATE_CONTEXT); | |
50838d1b PA |
1841 | |
1842 | if (th != nullptr) | |
7be2bb4f | 1843 | { |
50838d1b | 1844 | th->stopped_at_software_breakpoint = false; |
0578e87f TT |
1845 | if (windows_process.current_event.dwDebugEventCode |
1846 | == EXCEPTION_DEBUG_EVENT | |
1847 | && ((windows_process.current_event.u.Exception.ExceptionRecord.ExceptionCode | |
50838d1b | 1848 | == EXCEPTION_BREAKPOINT) |
0578e87f | 1849 | || (windows_process.current_event.u.Exception.ExceptionRecord.ExceptionCode |
50838d1b | 1850 | == STATUS_WX86_BREAKPOINT)) |
20489cca | 1851 | && windows_process.windows_initialization_done) |
50838d1b PA |
1852 | { |
1853 | th->stopped_at_software_breakpoint = true; | |
1854 | th->pc_adjusted = false; | |
1855 | } | |
7be2bb4f | 1856 | } |
0a4afda3 TT |
1857 | } |
1858 | ||
1859 | return result; | |
1860 | } | |
450005e7 CF |
1861 | else |
1862 | { | |
1863 | int detach = 0; | |
3cee93ac | 1864 | |
98bbd631 AC |
1865 | if (deprecated_ui_loop_hook != NULL) |
1866 | detach = deprecated_ui_loop_hook (0); | |
0714f9bf | 1867 | |
450005e7 | 1868 | if (detach) |
f6ac5f3d | 1869 | kill (); |
450005e7 CF |
1870 | } |
1871 | } | |
24e60978 SC |
1872 | } |
1873 | ||
50838d1b PA |
1874 | void |
1875 | windows_nat_target::do_initial_windows_stuff (DWORD pid, bool attaching) | |
9d3789f7 | 1876 | { |
fa4ba8da | 1877 | int i; |
d6b48e9c | 1878 | struct inferior *inf; |
9d3789f7 | 1879 | |
0578e87f | 1880 | windows_process.last_sig = GDB_SIGNAL_0; |
20489cca TT |
1881 | windows_process.open_process_used = 0; |
1882 | for (i = 0; | |
1883 | i < sizeof (windows_process.dr) / sizeof (windows_process.dr[0]); | |
1884 | i++) | |
1885 | windows_process.dr[i] = 0; | |
10325bc5 | 1886 | #ifdef __CYGWIN__ |
26f228db JT |
1887 | windows_process.cygwin_load_start = 0; |
1888 | windows_process.cygwin_load_end = 0; | |
10325bc5 | 1889 | #endif |
0578e87f TT |
1890 | windows_process.current_event.dwProcessId = pid; |
1891 | memset (&windows_process.current_event, 0, | |
1892 | sizeof (windows_process.current_event)); | |
02980c56 | 1893 | inf = current_inferior (); |
c8fbd44a | 1894 | if (!inf->target_is_pushed (this)) |
02980c56 | 1895 | inf->push_target (this); |
85e8a786 | 1896 | disable_breakpoints_in_shlibs (current_program_space); |
dc05df57 | 1897 | windows_clear_solib (); |
88056fbb | 1898 | clear_proceed_status (0); |
9d3789f7 CF |
1899 | init_wait_for_inferior (); |
1900 | ||
46f9f931 | 1901 | #ifdef __x86_64__ |
0578e87f TT |
1902 | windows_process.ignore_first_breakpoint |
1903 | = !attaching && windows_process.wow64_process; | |
46f9f931 | 1904 | |
0578e87f | 1905 | if (!windows_process.wow64_process) |
46f9f931 | 1906 | { |
20489cca TT |
1907 | windows_process.mappings = amd64_mappings; |
1908 | windows_process.segment_register_p = amd64_windows_segment_register_p; | |
46f9f931 HD |
1909 | } |
1910 | else | |
1911 | #endif | |
1912 | { | |
20489cca TT |
1913 | windows_process.mappings = i386_mappings; |
1914 | windows_process.segment_register_p = i386_windows_segment_register_p; | |
46f9f931 HD |
1915 | } |
1916 | ||
6c95b8df | 1917 | inferior_appeared (inf, pid); |
181e7f93 | 1918 | inf->attach_flag = attaching; |
7f9f62ba | 1919 | |
223ffa71 TT |
1920 | target_terminal::init (); |
1921 | target_terminal::inferior (); | |
9d3789f7 | 1922 | |
20489cca | 1923 | windows_process.windows_initialization_done = 0; |
c72f45d1 | 1924 | |
50838d1b PA |
1925 | ptid_t last_ptid; |
1926 | ||
9d3789f7 CF |
1927 | while (1) |
1928 | { | |
c72f45d1 PA |
1929 | struct target_waitstatus status; |
1930 | ||
50838d1b | 1931 | last_ptid = this->wait (minus_one_ptid, &status, 0); |
c72f45d1 PA |
1932 | |
1933 | /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread | |
1934 | events. */ | |
183be222 SM |
1935 | if (status.kind () != TARGET_WAITKIND_LOADED |
1936 | && status.kind () != TARGET_WAITKIND_SPURIOUS) | |
9d3789f7 | 1937 | break; |
c72f45d1 | 1938 | |
50838d1b | 1939 | this->resume (minus_one_ptid, 0, GDB_SIGNAL_0); |
9d3789f7 | 1940 | } |
eff8332b | 1941 | |
9213a6d7 | 1942 | switch_to_thread (this->find_thread (last_ptid)); |
50838d1b | 1943 | |
ea39ad35 | 1944 | /* Now that the inferior has been started and all DLLs have been mapped, |
3be75f87 JB |
1945 | we can iterate over all DLLs and load them in. |
1946 | ||
1947 | We avoid doing it any earlier because, on certain versions of Windows, | |
1948 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
1949 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
1950 | include the DLL name, preventing us from creating an associated SO. | |
1951 | A possible explanation is that ntdll.dll might be mapped before | |
1952 | the SO info gets created by the Windows system -- ntdll.dll is | |
1953 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
1954 | do not seem to suffer from that problem. | |
1955 | ||
1956 | Rather than try to work around this sort of issue, it is much | |
1957 | simpler to just ignore DLL load/unload events during the startup | |
1958 | phase, and then process them all in one batch now. */ | |
0578e87f | 1959 | windows_process.add_all_dlls (); |
94481b8c | 1960 | |
20489cca | 1961 | windows_process.windows_initialization_done = 1; |
9d3789f7 CF |
1962 | return; |
1963 | } | |
1964 | ||
616a9dc4 CV |
1965 | /* Try to set or remove a user privilege to the current process. Return -1 |
1966 | if that fails, the previous setting of that privilege otherwise. | |
1967 | ||
1968 | This code is copied from the Cygwin source code and rearranged to allow | |
1969 | dynamically loading of the needed symbols from advapi32 which is only | |
581e13c1 | 1970 | available on NT/2K/XP. */ |
616a9dc4 CV |
1971 | static int |
1972 | set_process_privilege (const char *privilege, BOOL enable) | |
1973 | { | |
616a9dc4 CV |
1974 | HANDLE token_hdl = NULL; |
1975 | LUID restore_priv; | |
1976 | TOKEN_PRIVILEGES new_priv, orig_priv; | |
1977 | int ret = -1; | |
1978 | DWORD size; | |
1979 | ||
616a9dc4 CV |
1980 | if (!OpenProcessToken (GetCurrentProcess (), |
1981 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
1982 | &token_hdl)) | |
1983 | goto out; | |
1984 | ||
418c6cb3 | 1985 | if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv)) |
616a9dc4 CV |
1986 | goto out; |
1987 | ||
1988 | new_priv.PrivilegeCount = 1; | |
1989 | new_priv.Privileges[0].Luid = restore_priv; | |
1990 | new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0; | |
1991 | ||
1992 | if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv, | |
295732ea | 1993 | sizeof orig_priv, &orig_priv, &size)) |
616a9dc4 CV |
1994 | goto out; |
1995 | #if 0 | |
1996 | /* Disabled, otherwise every `attach' in an unprivileged user session | |
1997 | would raise the "Failed to get SE_DEBUG_NAME privilege" warning in | |
581e13c1 | 1998 | windows_attach(). */ |
616a9dc4 | 1999 | /* AdjustTokenPrivileges returns TRUE even if the privilege could not |
581e13c1 | 2000 | be enabled. GetLastError () returns an correct error code, though. */ |
616a9dc4 CV |
2001 | if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED) |
2002 | goto out; | |
2003 | #endif | |
2004 | ||
2005 | ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0; | |
2006 | ||
2007 | out: | |
2008 | if (token_hdl) | |
2009 | CloseHandle (token_hdl); | |
2010 | ||
2011 | return ret; | |
2012 | } | |
2013 | ||
02cc9f49 | 2014 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
2015 | |
2016 | void | |
2017 | windows_nat_target::attach (const char *args, int from_tty) | |
24e60978 | 2018 | { |
559e75c0 | 2019 | DWORD pid; |
24e60978 | 2020 | |
74164c56 | 2021 | pid = parse_pid_to_attach (args); |
24e60978 | 2022 | |
616a9dc4 | 2023 | if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0) |
390abcd9 TT |
2024 | warning ("Failed to get SE_DEBUG_NAME privilege\n" |
2025 | "This can cause attach to fail on Windows NT/2K/XP"); | |
616a9dc4 | 2026 | |
dc05df57 | 2027 | windows_init_thread_list (); |
20489cca | 2028 | windows_process.saw_create = 0; |
24e60978 | 2029 | |
6b09f134 | 2030 | std::optional<unsigned> err; |
4cb763d6 | 2031 | do_synchronously ([&] () |
baa93fa6 | 2032 | { |
4cb763d6 | 2033 | BOOL ok = DebugActiveProcess (pid); |
baa93fa6 | 2034 | |
4cb763d6 TT |
2035 | #ifdef __CYGWIN__ |
2036 | if (!ok) | |
2037 | { | |
2038 | /* Try fall back to Cygwin pid. */ | |
2039 | pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); | |
2040 | ||
2041 | if (pid > 0) | |
2042 | ok = DebugActiveProcess (pid); | |
2043 | } | |
10325bc5 | 2044 | #endif |
baa93fa6 | 2045 | |
4cb763d6 TT |
2046 | if (!ok) |
2047 | err = (unsigned) GetLastError (); | |
d08bae3d TT |
2048 | |
2049 | return true; | |
4cb763d6 TT |
2050 | }); |
2051 | ||
2052 | if (err.has_value ()) | |
602971b3 TT |
2053 | { |
2054 | std::string msg = string_printf (_("Can't attach to process %u"), | |
2055 | (unsigned) pid); | |
2056 | throw_winerror_with_name (msg.c_str (), *err); | |
2057 | } | |
24e60978 | 2058 | |
2b008701 | 2059 | DebugSetProcessKillOnExit (FALSE); |
3ade5333 | 2060 | |
bc521517 | 2061 | target_announce_attach (from_tty, pid); |
24e60978 | 2062 | |
46f9f931 HD |
2063 | #ifdef __x86_64__ |
2064 | HANDLE h = OpenProcess (PROCESS_QUERY_INFORMATION, FALSE, pid); | |
2065 | if (h != NULL) | |
2066 | { | |
2067 | BOOL wow64; | |
2068 | if (IsWow64Process (h, &wow64)) | |
0578e87f | 2069 | windows_process.wow64_process = wow64; |
46f9f931 HD |
2070 | CloseHandle (h); |
2071 | } | |
2072 | #endif | |
2073 | ||
50838d1b | 2074 | do_initial_windows_stuff (pid, 1); |
223ffa71 | 2075 | target_terminal::ours (); |
24e60978 SC |
2076 | } |
2077 | ||
f6ac5f3d PA |
2078 | void |
2079 | windows_nat_target::detach (inferior *inf, int from_tty) | |
24e60978 | 2080 | { |
d08bae3d | 2081 | windows_continue (DBG_CONTINUE, -1, 0, true); |
96998ce7 | 2082 | |
6b09f134 | 2083 | std::optional<unsigned> err; |
4cb763d6 | 2084 | do_synchronously ([&] () |
02d04eac | 2085 | { |
4cb763d6 TT |
2086 | if (!DebugActiveProcessStop (windows_process.current_event.dwProcessId)) |
2087 | err = (unsigned) GetLastError (); | |
2088 | else | |
2089 | DebugSetProcessKillOnExit (FALSE); | |
d08bae3d | 2090 | return false; |
4cb763d6 TT |
2091 | }); |
2092 | ||
2093 | if (err.has_value ()) | |
602971b3 TT |
2094 | { |
2095 | std::string msg | |
2096 | = string_printf (_("Can't detach process %u"), | |
2097 | (unsigned) windows_process.current_event.dwProcessId); | |
2098 | throw_winerror_with_name (msg.c_str (), *err); | |
2099 | } | |
2b008701 | 2100 | |
eea2d835 | 2101 | target_announce_detach (from_tty); |
7f9f62ba | 2102 | |
df7e5265 | 2103 | x86_cleanup_dregs (); |
50838d1b | 2104 | switch_to_no_thread (); |
b7a08269 | 2105 | detach_inferior (inf); |
7f9f62ba | 2106 | |
f6ac5f3d | 2107 | maybe_unpush_target (); |
24e60978 SC |
2108 | } |
2109 | ||
47f7ffdb JB |
2110 | /* The pid_to_exec_file target_ops method for this platform. */ |
2111 | ||
0e90c441 | 2112 | const char * |
f6ac5f3d | 2113 | windows_nat_target::pid_to_exec_file (int pid) |
47216e51 | 2114 | { |
fcab5839 | 2115 | return windows_process.pid_to_exec_file (pid); |
47216e51 CV |
2116 | } |
2117 | ||
24e60978 SC |
2118 | /* Print status information about what we're accessing. */ |
2119 | ||
f6ac5f3d PA |
2120 | void |
2121 | windows_nat_target::files_info () | |
24e60978 | 2122 | { |
181e7f93 PA |
2123 | struct inferior *inf = current_inferior (); |
2124 | ||
6cb06a8c TT |
2125 | gdb_printf ("\tUsing the running image of %s %s.\n", |
2126 | inf->attach_flag ? "attached" : "child", | |
fb6d30e0 | 2127 | target_pid_to_str (ptid_t (inf->pid)).c_str ()); |
24e60978 SC |
2128 | } |
2129 | ||
cd44747c PM |
2130 | /* Modify CreateProcess parameters for use of a new separate console. |
2131 | Parameters are: | |
2132 | *FLAGS: DWORD parameter for general process creation flags. | |
2133 | *SI: STARTUPINFO structure, for which the console window size and | |
2134 | console buffer size is filled in if GDB is running in a console. | |
2135 | to create the new console. | |
2136 | The size of the used font is not available on all versions of | |
2137 | Windows OS. Furthermore, the current font might not be the default | |
2138 | font, but this is still better than before. | |
2139 | If the windows and buffer sizes are computed, | |
2140 | SI->DWFLAGS is changed so that this information is used | |
2141 | by CreateProcess function. */ | |
2142 | ||
2143 | static void | |
2144 | windows_set_console_info (STARTUPINFO *si, DWORD *flags) | |
2145 | { | |
2146 | HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE, | |
2147 | FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0); | |
2148 | ||
2149 | if (hconsole != INVALID_HANDLE_VALUE) | |
2150 | { | |
2151 | CONSOLE_SCREEN_BUFFER_INFO sbinfo; | |
2152 | COORD font_size; | |
2153 | CONSOLE_FONT_INFO cfi; | |
2154 | ||
2155 | GetCurrentConsoleFont (hconsole, FALSE, &cfi); | |
2156 | font_size = GetConsoleFontSize (hconsole, cfi.nFont); | |
2157 | GetConsoleScreenBufferInfo(hconsole, &sbinfo); | |
2158 | si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1; | |
2159 | si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1; | |
2160 | if (font_size.X) | |
2161 | si->dwXSize *= font_size.X; | |
2162 | else | |
2163 | si->dwXSize *= 8; | |
2164 | if (font_size.Y) | |
2165 | si->dwYSize *= font_size.Y; | |
2166 | else | |
2167 | si->dwYSize *= 12; | |
2168 | si->dwXCountChars = sbinfo.dwSize.X; | |
2169 | si->dwYCountChars = sbinfo.dwSize.Y; | |
2170 | si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS; | |
2171 | } | |
2172 | *flags |= CREATE_NEW_CONSOLE; | |
2173 | } | |
2174 | ||
c93dbcba EZ |
2175 | #ifndef __CYGWIN__ |
2176 | /* Function called by qsort to sort environment strings. */ | |
2177 | ||
2178 | static int | |
2179 | envvar_cmp (const void *a, const void *b) | |
2180 | { | |
2181 | const char **p = (const char **) a; | |
2182 | const char **q = (const char **) b; | |
2183 | return strcasecmp (*p, *q); | |
2184 | } | |
2185 | #endif | |
2186 | ||
b7ff339d CV |
2187 | #ifdef __CYGWIN__ |
2188 | static void | |
2189 | clear_win32_environment (char **env) | |
2190 | { | |
2191 | int i; | |
2192 | size_t len; | |
2193 | wchar_t *copy = NULL, *equalpos; | |
2194 | ||
2195 | for (i = 0; env[i] && *env[i]; i++) | |
2196 | { | |
2197 | len = mbstowcs (NULL, env[i], 0) + 1; | |
2198 | copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t)); | |
2199 | mbstowcs (copy, env[i], len); | |
2200 | equalpos = wcschr (copy, L'='); | |
2201 | if (equalpos) | |
dda83cd7 | 2202 | *equalpos = L'\0'; |
b7ff339d CV |
2203 | SetEnvironmentVariableW (copy, NULL); |
2204 | } | |
2205 | xfree (copy); | |
2206 | } | |
2207 | #endif | |
2208 | ||
8ba42bc5 EZ |
2209 | #ifndef __CYGWIN__ |
2210 | ||
2211 | /* Redirection of inferior I/O streams for native MS-Windows programs. | |
2212 | Unlike on Unix, where this is handled by invoking the inferior via | |
2213 | the shell, on MS-Windows we need to emulate the cmd.exe shell. | |
2214 | ||
2215 | The official documentation of the cmd.exe redirection features is here: | |
2216 | ||
2217 | http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx | |
2218 | ||
2219 | (That page talks about Windows XP, but there's no newer | |
2220 | documentation, so we assume later versions of cmd.exe didn't change | |
2221 | anything.) | |
2222 | ||
2223 | Caveat: the documentation on that page seems to include a few lies. | |
2224 | For example, it describes strange constructs 1<&2 and 2<&1, which | |
2225 | seem to work only when 1>&2 resp. 2>&1 would make sense, and so I | |
2226 | think the cmd.exe parser of the redirection symbols simply doesn't | |
2227 | care about the < vs > distinction in these cases. Therefore, the | |
2228 | supported features are explicitly documented below. | |
2229 | ||
2230 | The emulation below aims at supporting all the valid use cases | |
2231 | supported by cmd.exe, which include: | |
2232 | ||
2233 | < FILE redirect standard input from FILE | |
2234 | 0< FILE redirect standard input from FILE | |
2235 | <&N redirect standard input from file descriptor N | |
2236 | 0<&N redirect standard input from file descriptor N | |
2237 | > FILE redirect standard output to FILE | |
2238 | >> FILE append standard output to FILE | |
2239 | 1>> FILE append standard output to FILE | |
2240 | >&N redirect standard output to file descriptor N | |
2241 | 1>&N redirect standard output to file descriptor N | |
2242 | >>&N append standard output to file descriptor N | |
2243 | 1>>&N append standard output to file descriptor N | |
2244 | 2> FILE redirect standard error to FILE | |
2245 | 2>> FILE append standard error to FILE | |
2246 | 2>&N redirect standard error to file descriptor N | |
2247 | 2>>&N append standard error to file descriptor N | |
2248 | ||
2249 | Note that using N > 2 in the above construct is supported, but | |
2250 | requires that the corresponding file descriptor be open by some | |
2251 | means elsewhere or outside GDB. Also note that using ">&0" or | |
2252 | "<&2" will generally fail, because the file descriptor redirected | |
2253 | from is normally open in an incompatible mode (e.g., FD 0 is open | |
2254 | for reading only). IOW, use of such tricks is not recommended; | |
2255 | you are on your own. | |
2256 | ||
2257 | We do NOT support redirection of file descriptors above 2, as in | |
2258 | "3>SOME-FILE", because MinGW compiled programs don't (supporting | |
2259 | that needs special handling in the startup code that MinGW | |
2260 | doesn't have). Pipes are also not supported. | |
2261 | ||
2262 | As for invalid use cases, where the redirection contains some | |
2263 | error, the emulation below will detect that and produce some | |
2264 | error and/or failure. But the behavior in those cases is not | |
2265 | bug-for-bug compatible with what cmd.exe does in those cases. | |
2266 | That's because what cmd.exe does then is not well defined, and | |
2267 | seems to be a side effect of the cmd.exe parsing of the command | |
2268 | line more than anything else. For example, try redirecting to an | |
2269 | invalid file name, as in "> foo:bar". | |
2270 | ||
2271 | There are also minor syntactic deviations from what cmd.exe does | |
2272 | in some corner cases. For example, it doesn't support the likes | |
2273 | of "> &foo" to mean redirect to file named literally "&foo"; we | |
2274 | do support that here, because that, too, sounds like some issue | |
2275 | with the cmd.exe parser. Another nicety is that we support | |
2276 | redirection targets that use file names with forward slashes, | |
2277 | something cmd.exe doesn't -- this comes in handy since GDB | |
2278 | file-name completion can be used when typing the command line for | |
2279 | the inferior. */ | |
2280 | ||
2281 | /* Support routines for redirecting standard handles of the inferior. */ | |
2282 | ||
2283 | /* Parse a single redirection spec, open/duplicate the specified | |
2284 | file/fd, and assign the appropriate value to one of the 3 standard | |
2285 | file descriptors. */ | |
2286 | static int | |
2287 | redir_open (const char *redir_string, int *inp, int *out, int *err) | |
2288 | { | |
2289 | int *fd, ref_fd = -2; | |
2290 | int mode; | |
2291 | const char *fname = redir_string + 1; | |
2292 | int rc = *redir_string; | |
2293 | ||
2294 | switch (rc) | |
2295 | { | |
2296 | case '0': | |
2297 | fname++; | |
d182e398 | 2298 | [[fallthrough]]; |
8ba42bc5 EZ |
2299 | case '<': |
2300 | fd = inp; | |
2301 | mode = O_RDONLY; | |
2302 | break; | |
2303 | case '1': case '2': | |
2304 | fname++; | |
d182e398 | 2305 | [[fallthrough]]; |
8ba42bc5 EZ |
2306 | case '>': |
2307 | fd = (rc == '2') ? err : out; | |
2308 | mode = O_WRONLY | O_CREAT; | |
2309 | if (*fname == '>') | |
2310 | { | |
2311 | fname++; | |
2312 | mode |= O_APPEND; | |
2313 | } | |
2314 | else | |
2315 | mode |= O_TRUNC; | |
2316 | break; | |
2317 | default: | |
2318 | return -1; | |
2319 | } | |
2320 | ||
2321 | if (*fname == '&' && '0' <= fname[1] && fname[1] <= '9') | |
2322 | { | |
2323 | /* A reference to a file descriptor. */ | |
2324 | char *fdtail; | |
2325 | ref_fd = (int) strtol (fname + 1, &fdtail, 10); | |
2326 | if (fdtail > fname + 1 && *fdtail == '\0') | |
2327 | { | |
2328 | /* Don't allow redirection when open modes are incompatible. */ | |
2329 | if ((ref_fd == 0 && (fd == out || fd == err)) | |
2330 | || ((ref_fd == 1 || ref_fd == 2) && fd == inp)) | |
2331 | { | |
2332 | errno = EPERM; | |
2333 | return -1; | |
2334 | } | |
2335 | if (ref_fd == 0) | |
2336 | ref_fd = *inp; | |
2337 | else if (ref_fd == 1) | |
2338 | ref_fd = *out; | |
2339 | else if (ref_fd == 2) | |
2340 | ref_fd = *err; | |
2341 | } | |
2342 | else | |
2343 | { | |
2344 | errno = EBADF; | |
2345 | return -1; | |
2346 | } | |
2347 | } | |
2348 | else | |
2349 | fname++; /* skip the separator space */ | |
2350 | /* If the descriptor is already open, close it. This allows | |
2351 | multiple specs of redirections for the same stream, which is | |
2352 | somewhat nonsensical, but still valid and supported by cmd.exe. | |
2353 | (But cmd.exe only opens a single file in this case, the one | |
2354 | specified by the last redirection spec on the command line.) */ | |
2355 | if (*fd >= 0) | |
2356 | _close (*fd); | |
2357 | if (ref_fd == -2) | |
2358 | { | |
2359 | *fd = _open (fname, mode, _S_IREAD | _S_IWRITE); | |
2360 | if (*fd < 0) | |
2361 | return -1; | |
2362 | } | |
2363 | else if (ref_fd == -1) | |
2364 | *fd = -1; /* reset to default destination */ | |
2365 | else | |
2366 | { | |
2367 | *fd = _dup (ref_fd); | |
2368 | if (*fd < 0) | |
2369 | return -1; | |
2370 | } | |
2371 | /* _open just sets a flag for O_APPEND, which won't be passed to the | |
2372 | inferior, so we need to actually move the file pointer. */ | |
2373 | if ((mode & O_APPEND) != 0) | |
2374 | _lseek (*fd, 0L, SEEK_END); | |
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | /* Canonicalize a single redirection spec and set up the corresponding | |
2379 | file descriptor as specified. */ | |
2380 | static int | |
2381 | redir_set_redirection (const char *s, int *inp, int *out, int *err) | |
2382 | { | |
2383 | char buf[__PMAX + 2 + 5]; /* extra space for quotes & redirection string */ | |
2384 | char *d = buf; | |
2385 | const char *start = s; | |
2386 | int quote = 0; | |
2387 | ||
2388 | *d++ = *s++; /* copy the 1st character, < or > or a digit */ | |
2389 | if ((*start == '>' || *start == '1' || *start == '2') | |
2390 | && *s == '>') | |
2391 | { | |
2392 | *d++ = *s++; | |
2393 | if (*s == '>' && *start != '>') | |
2394 | *d++ = *s++; | |
2395 | } | |
2396 | else if (*start == '0' && *s == '<') | |
2397 | *d++ = *s++; | |
2398 | /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */ | |
2399 | if (*s != '&') | |
2400 | { | |
2401 | while (isspace (*s)) /* skip whitespace before file name */ | |
2402 | s++; | |
2403 | *d++ = ' '; /* separate file name with a single space */ | |
2404 | } | |
2405 | ||
2406 | /* Copy the file name. */ | |
2407 | while (*s) | |
2408 | { | |
2409 | /* Remove quoting characters from the file name in buf[]. */ | |
2410 | if (*s == '"') /* could support '..' quoting here */ | |
2411 | { | |
2412 | if (!quote) | |
2413 | quote = *s++; | |
2414 | else if (*s == quote) | |
2415 | { | |
2416 | quote = 0; | |
2417 | s++; | |
2418 | } | |
2419 | else | |
2420 | *d++ = *s++; | |
2421 | } | |
2422 | else if (*s == '\\') | |
2423 | { | |
2424 | if (s[1] == '"') /* could support '..' here */ | |
2425 | s++; | |
2426 | *d++ = *s++; | |
2427 | } | |
2428 | else if (isspace (*s) && !quote) | |
2429 | break; | |
2430 | else | |
2431 | *d++ = *s++; | |
2432 | if (d - buf >= sizeof (buf) - 1) | |
2433 | { | |
2434 | errno = ENAMETOOLONG; | |
2435 | return 0; | |
2436 | } | |
2437 | } | |
2438 | *d = '\0'; | |
2439 | ||
2440 | /* Windows doesn't allow redirection characters in file names, so we | |
2441 | can bail out early if they use them, or if there's no target file | |
2442 | name after the redirection symbol. */ | |
2443 | if (d[-1] == '>' || d[-1] == '<') | |
2444 | { | |
2445 | errno = ENOENT; | |
2446 | return 0; | |
2447 | } | |
2448 | if (redir_open (buf, inp, out, err) == 0) | |
2449 | return s - start; | |
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | /* Parse the command line for redirection specs and prepare the file | |
2454 | descriptors for the 3 standard streams accordingly. */ | |
2455 | static bool | |
2456 | redirect_inferior_handles (const char *cmd_orig, char *cmd, | |
2457 | int *inp, int *out, int *err) | |
2458 | { | |
2459 | const char *s = cmd_orig; | |
2460 | char *d = cmd; | |
2461 | int quote = 0; | |
2462 | bool retval = false; | |
2463 | ||
2464 | while (isspace (*s)) | |
2465 | *d++ = *s++; | |
2466 | ||
2467 | while (*s) | |
2468 | { | |
2469 | if (*s == '"') /* could also support '..' quoting here */ | |
2470 | { | |
2471 | if (!quote) | |
2472 | quote = *s; | |
2473 | else if (*s == quote) | |
2474 | quote = 0; | |
2475 | } | |
2476 | else if (*s == '\\') | |
2477 | { | |
2478 | if (s[1] == '"') /* escaped quote char */ | |
2479 | s++; | |
2480 | } | |
2481 | else if (!quote) | |
2482 | { | |
2483 | /* Process a single redirection candidate. */ | |
2484 | if (*s == '<' || *s == '>' | |
2485 | || ((*s == '1' || *s == '2') && s[1] == '>') | |
2486 | || (*s == '0' && s[1] == '<')) | |
2487 | { | |
2488 | int skip = redir_set_redirection (s, inp, out, err); | |
2489 | ||
2490 | if (skip <= 0) | |
2491 | return false; | |
2492 | retval = true; | |
2493 | s += skip; | |
2494 | } | |
2495 | } | |
2496 | if (*s) | |
2497 | *d++ = *s++; | |
2498 | } | |
2499 | *d = '\0'; | |
2500 | return retval; | |
2501 | } | |
2502 | #endif /* !__CYGWIN__ */ | |
2503 | ||
dc05df57 | 2504 | /* Start an inferior windows child process and sets inferior_ptid to its pid. |
24e60978 SC |
2505 | EXEC_FILE is the file to run. |
2506 | ALLARGS is a string containing the arguments to the program. | |
2507 | ENV is the environment vector to pass. Errors reported with error(). */ | |
2508 | ||
f6ac5f3d PA |
2509 | void |
2510 | windows_nat_target::create_inferior (const char *exec_file, | |
2511 | const std::string &origallargs, | |
2512 | char **in_env, int from_tty) | |
24e60978 | 2513 | { |
b3c613f2 | 2514 | STARTUPINFO si; |
41b4aadc | 2515 | #ifdef __CYGWIN__ |
7d941aa3 JT |
2516 | wchar_t real_path[__PMAX]; |
2517 | wchar_t shell[__PMAX]; /* Path to shell */ | |
2518 | wchar_t infcwd[__PMAX]; | |
d0d0ab16 | 2519 | const char *sh; |
7d941aa3 JT |
2520 | wchar_t *toexec; |
2521 | wchar_t *cygallargs; | |
2522 | wchar_t *args; | |
b7ff339d CV |
2523 | char **old_env = NULL; |
2524 | PWCHAR w32_env; | |
d0d0ab16 | 2525 | size_t len; |
2becadee CF |
2526 | int tty; |
2527 | int ostdin, ostdout, ostderr; | |
8ba42bc5 | 2528 | #else /* !__CYGWIN__ */ |
b3c613f2 | 2529 | char shell[__PMAX]; /* Path to shell */ |
5430098f | 2530 | const char *toexec; |
8ba42bc5 EZ |
2531 | char *args, *allargs_copy; |
2532 | size_t args_len, allargs_len; | |
2533 | int fd_inp = -1, fd_out = -1, fd_err = -1; | |
2534 | HANDLE tty = INVALID_HANDLE_VALUE; | |
8ba42bc5 | 2535 | bool redirected = false; |
c93dbcba EZ |
2536 | char *w32env; |
2537 | char *temp; | |
2538 | size_t envlen; | |
2539 | int i; | |
2540 | size_t envsize; | |
2541 | char **env; | |
8ba42bc5 | 2542 | #endif /* !__CYGWIN__ */ |
096c92dd | 2543 | const char *allargs = origallargs.c_str (); |
d0d0ab16 | 2544 | PROCESS_INFORMATION pi; |
6b09f134 | 2545 | std::optional<unsigned> ret; |
d0d0ab16 | 2546 | DWORD flags = 0; |
0b73bf7f | 2547 | const std::string &inferior_tty = current_inferior ()->tty (); |
24e60978 SC |
2548 | |
2549 | if (!exec_file) | |
8a3fe4f8 | 2550 | error (_("No executable specified, use `target exec'.")); |
24e60978 | 2551 | |
0b73bf7f | 2552 | const char *inferior_cwd = current_inferior ()->cwd ().c_str (); |
d092c5a2 | 2553 | std::string expanded_infcwd; |
0b73bf7f TT |
2554 | if (*inferior_cwd == '\0') |
2555 | inferior_cwd = nullptr; | |
2556 | else | |
d092c5a2 SDJ |
2557 | { |
2558 | expanded_infcwd = gdb_tilde_expand (inferior_cwd); | |
2559 | /* Mirror slashes on inferior's cwd. */ | |
2560 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), | |
2561 | '/', '\\'); | |
2562 | inferior_cwd = expanded_infcwd.c_str (); | |
2563 | } | |
2564 | ||
24e60978 SC |
2565 | memset (&si, 0, sizeof (si)); |
2566 | si.cb = sizeof (si); | |
2567 | ||
d0d0ab16 CV |
2568 | if (new_group) |
2569 | flags |= CREATE_NEW_PROCESS_GROUP; | |
2570 | ||
2571 | if (new_console) | |
cd44747c | 2572 | windows_set_console_info (&si, &flags); |
d0d0ab16 | 2573 | |
10325bc5 | 2574 | #ifdef __CYGWIN__ |
349b409f | 2575 | if (!useshell) |
dfe7f3ac | 2576 | { |
d0d0ab16 CV |
2577 | flags |= DEBUG_ONLY_THIS_PROCESS; |
2578 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path, | |
7d941aa3 | 2579 | __PMAX * sizeof (wchar_t)) < 0) |
d0d0ab16 | 2580 | error (_("Error starting executable: %d"), errno); |
dfe7f3ac | 2581 | toexec = real_path; |
d0d0ab16 CV |
2582 | len = mbstowcs (NULL, allargs, 0) + 1; |
2583 | if (len == (size_t) -1) | |
2584 | error (_("Error starting executable: %d"), errno); | |
2585 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2586 | mbstowcs (cygallargs, allargs, len); | |
dfe7f3ac CF |
2587 | } |
2588 | else | |
2589 | { | |
974e6844 | 2590 | sh = get_shell (); |
b3c613f2 | 2591 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0) |
24b21115 | 2592 | error (_("Error starting executable via shell: %d"), errno); |
d0d0ab16 CV |
2593 | len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0) |
2594 | + mbstowcs (NULL, allargs, 0) + 2; | |
2595 | cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t)); | |
2596 | swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs); | |
dfe7f3ac | 2597 | toexec = shell; |
d0d0ab16 | 2598 | flags |= DEBUG_PROCESS; |
dfe7f3ac | 2599 | } |
b3c613f2 | 2600 | |
d092c5a2 SDJ |
2601 | if (inferior_cwd != NULL |
2602 | && cygwin_conv_path (CCP_POSIX_TO_WIN_W, inferior_cwd, | |
2603 | infcwd, strlen (inferior_cwd)) < 0) | |
2604 | error (_("Error converting inferior cwd: %d"), errno); | |
2605 | ||
7d941aa3 JT |
2606 | args = (wchar_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2) |
2607 | * sizeof (wchar_t)); | |
d0d0ab16 CV |
2608 | wcscpy (args, toexec); |
2609 | wcscat (args, L" "); | |
2610 | wcscat (args, cygallargs); | |
b3c613f2 | 2611 | |
b7ff339d CV |
2612 | #ifdef CW_CVT_ENV_TO_WINENV |
2613 | /* First try to create a direct Win32 copy of the POSIX environment. */ | |
2614 | w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env); | |
2615 | if (w32_env != (PWCHAR) -1) | |
2616 | flags |= CREATE_UNICODE_ENVIRONMENT; | |
2617 | else | |
2618 | /* If that fails, fall back to old method tweaking GDB's environment. */ | |
8ba42bc5 | 2619 | #endif /* CW_CVT_ENV_TO_WINENV */ |
b7ff339d CV |
2620 | { |
2621 | /* Reset all Win32 environment variables to avoid leftover on next run. */ | |
2622 | clear_win32_environment (environ); | |
2623 | /* Prepare the environment vars for CreateProcess. */ | |
2624 | old_env = environ; | |
2625 | environ = in_env; | |
2626 | cygwin_internal (CW_SYNC_WINENV); | |
2627 | w32_env = NULL; | |
2628 | } | |
1750a5ef | 2629 | |
0b73bf7f | 2630 | if (inferior_tty.empty ()) |
2becadee CF |
2631 | tty = ostdin = ostdout = ostderr = -1; |
2632 | else | |
2633 | { | |
0b73bf7f | 2634 | tty = open (inferior_tty.c_str (), O_RDWR | O_NOCTTY); |
2becadee CF |
2635 | if (tty < 0) |
2636 | { | |
3d38b301 | 2637 | warning_filename_and_errno (inferior_tty.c_str (), errno); |
2becadee CF |
2638 | ostdin = ostdout = ostderr = -1; |
2639 | } | |
2640 | else | |
2641 | { | |
2642 | ostdin = dup (0); | |
2643 | ostdout = dup (1); | |
2644 | ostderr = dup (2); | |
2645 | dup2 (tty, 0); | |
2646 | dup2 (tty, 1); | |
2647 | dup2 (tty, 2); | |
2648 | } | |
2649 | } | |
d0d0ab16 CV |
2650 | |
2651 | windows_init_thread_list (); | |
4cb763d6 TT |
2652 | do_synchronously ([&] () |
2653 | { | |
2654 | if (!create_process (nullptr, args, flags, w32_env, | |
2655 | inferior_cwd != nullptr ? infcwd : nullptr, | |
2656 | disable_randomization, | |
2657 | &si, &pi)) | |
2658 | ret = (unsigned) GetLastError (); | |
d08bae3d | 2659 | return true; |
4cb763d6 TT |
2660 | }); |
2661 | ||
b7ff339d CV |
2662 | if (w32_env) |
2663 | /* Just free the Win32 environment, if it could be created. */ | |
2664 | free (w32_env); | |
2665 | else | |
2666 | { | |
2667 | /* Reset all environment variables to avoid leftover on next run. */ | |
2668 | clear_win32_environment (in_env); | |
2669 | /* Restore normal GDB environment variables. */ | |
2670 | environ = old_env; | |
2671 | cygwin_internal (CW_SYNC_WINENV); | |
2672 | } | |
2673 | ||
d0d0ab16 CV |
2674 | if (tty >= 0) |
2675 | { | |
6af79d7b | 2676 | ::close (tty); |
d0d0ab16 CV |
2677 | dup2 (ostdin, 0); |
2678 | dup2 (ostdout, 1); | |
2679 | dup2 (ostderr, 2); | |
6af79d7b JT |
2680 | ::close (ostdin); |
2681 | ::close (ostdout); | |
2682 | ::close (ostderr); | |
d0d0ab16 | 2683 | } |
8ba42bc5 EZ |
2684 | #else /* !__CYGWIN__ */ |
2685 | allargs_len = strlen (allargs); | |
2686 | allargs_copy = strcpy ((char *) alloca (allargs_len + 1), allargs); | |
2687 | if (strpbrk (allargs_copy, "<>") != NULL) | |
2688 | { | |
2689 | int e = errno; | |
2690 | errno = 0; | |
2691 | redirected = | |
2692 | redirect_inferior_handles (allargs, allargs_copy, | |
2693 | &fd_inp, &fd_out, &fd_err); | |
2694 | if (errno) | |
6d91ce9a | 2695 | warning (_("Error in redirection: %s."), safe_strerror (errno)); |
8ba42bc5 EZ |
2696 | else |
2697 | errno = e; | |
2698 | allargs_len = strlen (allargs_copy); | |
2699 | } | |
2700 | /* If not all the standard streams are redirected by the command | |
05779d57 | 2701 | line, use INFERIOR_TTY for those which aren't. */ |
0b73bf7f | 2702 | if (!inferior_tty.empty () |
8ba42bc5 | 2703 | && !(fd_inp >= 0 && fd_out >= 0 && fd_err >= 0)) |
41b4aadc CF |
2704 | { |
2705 | SECURITY_ATTRIBUTES sa; | |
2706 | sa.nLength = sizeof(sa); | |
2707 | sa.lpSecurityDescriptor = 0; | |
2708 | sa.bInheritHandle = TRUE; | |
0b73bf7f | 2709 | tty = CreateFileA (inferior_tty.c_str (), GENERIC_READ | GENERIC_WRITE, |
41b4aadc CF |
2710 | 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); |
2711 | if (tty == INVALID_HANDLE_VALUE) | |
02d04eac TT |
2712 | { |
2713 | unsigned err = (unsigned) GetLastError (); | |
2714 | warning (_("Warning: Failed to open TTY %s, error %#x: %s"), | |
2715 | inferior_tty.c_str (), err, strwinerror (err)); | |
2716 | } | |
8ba42bc5 EZ |
2717 | } |
2718 | if (redirected || tty != INVALID_HANDLE_VALUE) | |
2719 | { | |
2720 | if (fd_inp >= 0) | |
2721 | si.hStdInput = (HANDLE) _get_osfhandle (fd_inp); | |
2722 | else if (tty != INVALID_HANDLE_VALUE) | |
2723 | si.hStdInput = tty; | |
41b4aadc | 2724 | else |
8ba42bc5 EZ |
2725 | si.hStdInput = GetStdHandle (STD_INPUT_HANDLE); |
2726 | if (fd_out >= 0) | |
2727 | si.hStdOutput = (HANDLE) _get_osfhandle (fd_out); | |
2728 | else if (tty != INVALID_HANDLE_VALUE) | |
2729 | si.hStdOutput = tty; | |
2730 | else | |
2731 | si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
2732 | if (fd_err >= 0) | |
2733 | si.hStdError = (HANDLE) _get_osfhandle (fd_err); | |
2734 | else if (tty != INVALID_HANDLE_VALUE) | |
2735 | si.hStdError = tty; | |
2736 | else | |
2737 | si.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
2738 | si.dwFlags |= STARTF_USESTDHANDLES; | |
41b4aadc | 2739 | } |
2becadee | 2740 | |
8ba42bc5 EZ |
2741 | toexec = exec_file; |
2742 | /* Build the command line, a space-separated list of tokens where | |
2743 | the first token is the name of the module to be executed. | |
2744 | To avoid ambiguities introduced by spaces in the module name, | |
2745 | we quote it. */ | |
2746 | args_len = strlen (toexec) + 2 /* quotes */ + allargs_len + 2; | |
2747 | args = (char *) alloca (args_len); | |
2748 | xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs_copy); | |
2749 | ||
2750 | flags |= DEBUG_ONLY_THIS_PROCESS; | |
2751 | ||
c93dbcba EZ |
2752 | /* CreateProcess takes the environment list as a null terminated set of |
2753 | strings (i.e. two nulls terminate the list). */ | |
2754 | ||
2755 | /* Get total size for env strings. */ | |
2756 | for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++) | |
2757 | envlen += strlen (in_env[i]) + 1; | |
2758 | ||
2759 | envsize = sizeof (in_env[0]) * (i + 1); | |
2760 | env = (char **) alloca (envsize); | |
2761 | memcpy (env, in_env, envsize); | |
2762 | /* Windows programs expect the environment block to be sorted. */ | |
2763 | qsort (env, i, sizeof (char *), envvar_cmp); | |
2764 | ||
0ae1c716 | 2765 | w32env = (char *) alloca (envlen + 1); |
c93dbcba EZ |
2766 | |
2767 | /* Copy env strings into new buffer. */ | |
2768 | for (temp = w32env, i = 0; env[i] && *env[i]; i++) | |
2769 | { | |
2770 | strcpy (temp, env[i]); | |
2771 | temp += strlen (temp) + 1; | |
2772 | } | |
2773 | ||
2774 | /* Final nil string to terminate new env. */ | |
2775 | *temp = 0; | |
2776 | ||
dc05df57 | 2777 | windows_init_thread_list (); |
4cb763d6 TT |
2778 | do_synchronously ([&] () |
2779 | { | |
2780 | if (!create_process (nullptr, /* image */ | |
2781 | args, /* command line */ | |
2782 | flags, /* start flags */ | |
2783 | w32env, /* environment */ | |
2784 | inferior_cwd, /* current directory */ | |
2785 | disable_randomization, | |
2786 | &si, | |
2787 | &pi)) | |
2788 | ret = (unsigned) GetLastError (); | |
d08bae3d | 2789 | return true; |
4cb763d6 | 2790 | }); |
41b4aadc CF |
2791 | if (tty != INVALID_HANDLE_VALUE) |
2792 | CloseHandle (tty); | |
8ba42bc5 EZ |
2793 | if (fd_inp >= 0) |
2794 | _close (fd_inp); | |
2795 | if (fd_out >= 0) | |
2796 | _close (fd_out); | |
2797 | if (fd_err >= 0) | |
2798 | _close (fd_err); | |
2799 | #endif /* !__CYGWIN__ */ | |
2becadee | 2800 | |
4cb763d6 | 2801 | if (ret.has_value ()) |
602971b3 TT |
2802 | { |
2803 | std::string msg = _("Error creating process ") + std::string (exec_file); | |
2804 | throw_winerror_with_name (msg.c_str (), *ret); | |
2805 | } | |
24e60978 | 2806 | |
46f9f931 HD |
2807 | #ifdef __x86_64__ |
2808 | BOOL wow64; | |
2809 | if (IsWow64Process (pi.hProcess, &wow64)) | |
0578e87f | 2810 | windows_process.wow64_process = wow64; |
46f9f931 HD |
2811 | #endif |
2812 | ||
c1766e7d PM |
2813 | CloseHandle (pi.hThread); |
2814 | CloseHandle (pi.hProcess); | |
2815 | ||
dfe7f3ac | 2816 | if (useshell && shell[0] != '\0') |
20489cca | 2817 | windows_process.saw_create = -1; |
dfe7f3ac | 2818 | else |
20489cca | 2819 | windows_process.saw_create = 0; |
dfe7f3ac | 2820 | |
50838d1b | 2821 | do_initial_windows_stuff (pi.dwProcessId, 0); |
d3a09475 | 2822 | |
17617f2d | 2823 | /* windows_continue (DBG_CONTINUE, -1, 0); */ |
24e60978 SC |
2824 | } |
2825 | ||
f6ac5f3d PA |
2826 | void |
2827 | windows_nat_target::mourn_inferior () | |
24e60978 | 2828 | { |
d08bae3d | 2829 | (void) windows_continue (DBG_CONTINUE, -1, 0, true); |
df7e5265 | 2830 | x86_cleanup_dregs(); |
20489cca | 2831 | if (windows_process.open_process_used) |
bf25528d | 2832 | { |
0578e87f | 2833 | CHECK (CloseHandle (windows_process.handle)); |
20489cca | 2834 | windows_process.open_process_used = 0; |
bf25528d | 2835 | } |
0578e87f | 2836 | windows_process.siginfo_er.ExceptionCode = 0; |
f6ac5f3d | 2837 | inf_child_target::mourn_inferior (); |
24e60978 SC |
2838 | } |
2839 | ||
44f38867 PA |
2840 | /* Helper for windows_xfer_partial that handles memory transfers. |
2841 | Arguments are like target_xfer_partial. */ | |
2842 | ||
9b409511 | 2843 | static enum target_xfer_status |
44f38867 | 2844 | windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2845 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) |
24e60978 | 2846 | { |
5732a500 | 2847 | SIZE_T done = 0; |
44f38867 | 2848 | BOOL success; |
9e52adf9 | 2849 | DWORD lasterror = 0; |
44f38867 PA |
2850 | |
2851 | if (writebuf != NULL) | |
24e60978 | 2852 | { |
4ef367bf TT |
2853 | DEBUG_MEM ("write target memory, %s bytes at %s", |
2854 | pulongest (len), core_addr_to_string (memaddr)); | |
0578e87f | 2855 | success = WriteProcessMemory (windows_process.handle, |
44f38867 PA |
2856 | (LPVOID) (uintptr_t) memaddr, writebuf, |
2857 | len, &done); | |
9e52adf9 | 2858 | if (!success) |
7126d5c8 | 2859 | lasterror = GetLastError (); |
0578e87f | 2860 | FlushInstructionCache (windows_process.handle, |
2c647436 | 2861 | (LPCVOID) (uintptr_t) memaddr, len); |
24e60978 SC |
2862 | } |
2863 | else | |
2864 | { | |
4ef367bf TT |
2865 | DEBUG_MEM ("read target memory, %s bytes at %s", |
2866 | pulongest (len), core_addr_to_string (memaddr)); | |
0578e87f | 2867 | success = ReadProcessMemory (windows_process.handle, |
44f38867 PA |
2868 | (LPCVOID) (uintptr_t) memaddr, readbuf, |
2869 | len, &done); | |
9e52adf9 | 2870 | if (!success) |
7126d5c8 | 2871 | lasterror = GetLastError (); |
24e60978 | 2872 | } |
9b409511 | 2873 | *xfered_len = (ULONGEST) done; |
9e52adf9 | 2874 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
9b409511 | 2875 | return TARGET_XFER_OK; |
9e52adf9 | 2876 | else |
9b409511 | 2877 | return success ? TARGET_XFER_OK : TARGET_XFER_E_IO; |
24e60978 SC |
2878 | } |
2879 | ||
f6ac5f3d PA |
2880 | void |
2881 | windows_nat_target::kill () | |
24e60978 | 2882 | { |
0578e87f | 2883 | CHECK (TerminateProcess (windows_process.handle, 0)); |
3cee93ac | 2884 | |
b5edcb45 ILT |
2885 | for (;;) |
2886 | { | |
17617f2d | 2887 | if (!windows_continue (DBG_CONTINUE, -1, 1)) |
b5edcb45 | 2888 | break; |
4cb763d6 | 2889 | wait_for_debug_event_main_thread (&windows_process.current_event); |
0578e87f TT |
2890 | if (windows_process.current_event.dwDebugEventCode |
2891 | == EXIT_PROCESS_DEBUG_EVENT) | |
b5edcb45 ILT |
2892 | break; |
2893 | } | |
2894 | ||
9eee20eb | 2895 | target_mourn_inferior (inferior_ptid); /* Or just windows_mourn_inferior? */ |
24e60978 SC |
2896 | } |
2897 | ||
f6ac5f3d PA |
2898 | void |
2899 | windows_nat_target::close () | |
24e60978 | 2900 | { |
4ef367bf | 2901 | DEBUG_EVENTS ("inferior_ptid=%d\n", inferior_ptid.pid ()); |
d08bae3d | 2902 | async (false); |
24e60978 | 2903 | } |
1ef980b9 | 2904 | |
581e13c1 | 2905 | /* Convert pid to printable format. */ |
a068643d | 2906 | std::string |
f6ac5f3d | 2907 | windows_nat_target::pid_to_str (ptid_t ptid) |
24e60978 | 2908 | { |
7c7411bc TT |
2909 | if (ptid.lwp () != 0) |
2910 | return string_printf ("Thread %d.0x%lx", ptid.pid (), ptid.lwp ()); | |
2dc38344 PA |
2911 | |
2912 | return normal_pid_to_str (ptid); | |
3ee6f623 CF |
2913 | } |
2914 | ||
9b409511 | 2915 | static enum target_xfer_status |
dc05df57 | 2916 | windows_xfer_shared_libraries (struct target_ops *ops, |
9b409511 YQ |
2917 | enum target_object object, const char *annex, |
2918 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
2919 | ULONGEST offset, ULONGEST len, | |
2920 | ULONGEST *xfered_len) | |
3cb8e7f6 | 2921 | { |
de1b3c3d | 2922 | if (writebuf) |
2ed4b548 | 2923 | return TARGET_XFER_E_IO; |
3cb8e7f6 | 2924 | |
d6ac292e | 2925 | std::string xml = "<library-list>\n"; |
20489cca | 2926 | for (windows_solib &so : windows_process.solibs) |
85b25bd9 TT |
2927 | windows_xfer_shared_library (so.name.c_str (), |
2928 | (CORE_ADDR) (uintptr_t) so.load_addr, | |
2929 | &so.text_offset, | |
d6ac292e SM |
2930 | current_inferior ()->arch (), xml); |
2931 | xml += "</library-list>\n"; | |
3cb8e7f6 | 2932 | |
d6ac292e | 2933 | ULONGEST len_avail = xml.size (); |
de1b3c3d | 2934 | if (offset >= len_avail) |
d6ac292e | 2935 | len = 0; |
49dc7f4b PM |
2936 | else |
2937 | { | |
2938 | if (len > len_avail - offset) | |
2939 | len = len_avail - offset; | |
d6ac292e | 2940 | memcpy (readbuf, xml.data () + offset, len); |
49dc7f4b | 2941 | } |
3cb8e7f6 | 2942 | |
9b409511 | 2943 | *xfered_len = (ULONGEST) len; |
0837c976 | 2944 | return len != 0 ? TARGET_XFER_OK : TARGET_XFER_EOF; |
3cb8e7f6 CF |
2945 | } |
2946 | ||
7928d571 HD |
2947 | /* Helper for windows_nat_target::xfer_partial that handles signal info. */ |
2948 | ||
2949 | static enum target_xfer_status | |
2950 | windows_xfer_siginfo (gdb_byte *readbuf, ULONGEST offset, ULONGEST len, | |
2951 | ULONGEST *xfered_len) | |
2952 | { | |
0578e87f TT |
2953 | char *buf = (char *) &windows_process.siginfo_er; |
2954 | size_t bufsize = sizeof (windows_process.siginfo_er); | |
46f9f931 HD |
2955 | |
2956 | #ifdef __x86_64__ | |
2957 | EXCEPTION_RECORD32 er32; | |
0578e87f | 2958 | if (windows_process.wow64_process) |
46f9f931 HD |
2959 | { |
2960 | buf = (char *) &er32; | |
2961 | bufsize = sizeof (er32); | |
2962 | ||
0578e87f TT |
2963 | er32.ExceptionCode = windows_process.siginfo_er.ExceptionCode; |
2964 | er32.ExceptionFlags = windows_process.siginfo_er.ExceptionFlags; | |
2965 | er32.ExceptionRecord | |
2966 | = (uintptr_t) windows_process.siginfo_er.ExceptionRecord; | |
2967 | er32.ExceptionAddress | |
2968 | = (uintptr_t) windows_process.siginfo_er.ExceptionAddress; | |
2969 | er32.NumberParameters = windows_process.siginfo_er.NumberParameters; | |
46f9f931 HD |
2970 | int i; |
2971 | for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++) | |
0578e87f TT |
2972 | er32.ExceptionInformation[i] |
2973 | = windows_process.siginfo_er.ExceptionInformation[i]; | |
46f9f931 HD |
2974 | } |
2975 | #endif | |
2976 | ||
0578e87f | 2977 | if (windows_process.siginfo_er.ExceptionCode == 0) |
7928d571 HD |
2978 | return TARGET_XFER_E_IO; |
2979 | ||
2980 | if (readbuf == nullptr) | |
2981 | return TARGET_XFER_E_IO; | |
2982 | ||
46f9f931 | 2983 | if (offset > bufsize) |
7928d571 HD |
2984 | return TARGET_XFER_E_IO; |
2985 | ||
46f9f931 HD |
2986 | if (offset + len > bufsize) |
2987 | len = bufsize - offset; | |
7928d571 | 2988 | |
46f9f931 | 2989 | memcpy (readbuf, buf + offset, len); |
7928d571 HD |
2990 | *xfered_len = len; |
2991 | ||
2992 | return TARGET_XFER_OK; | |
2993 | } | |
2994 | ||
f6ac5f3d PA |
2995 | enum target_xfer_status |
2996 | windows_nat_target::xfer_partial (enum target_object object, | |
2997 | const char *annex, gdb_byte *readbuf, | |
2f4f025f TT |
2998 | const gdb_byte *writebuf, ULONGEST offset, |
2999 | ULONGEST len, ULONGEST *xfered_len) | |
3cb8e7f6 | 3000 | { |
de1b3c3d | 3001 | switch (object) |
3cb8e7f6 | 3002 | { |
de1b3c3d | 3003 | case TARGET_OBJECT_MEMORY: |
9b409511 | 3004 | return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
de1b3c3d PA |
3005 | |
3006 | case TARGET_OBJECT_LIBRARIES: | |
f6ac5f3d | 3007 | return windows_xfer_shared_libraries (this, object, annex, readbuf, |
9b409511 | 3008 | writebuf, offset, len, xfered_len); |
3929abe9 | 3009 | |
7928d571 HD |
3010 | case TARGET_OBJECT_SIGNAL_INFO: |
3011 | return windows_xfer_siginfo (readbuf, offset, len, xfered_len); | |
3012 | ||
de1b3c3d | 3013 | default: |
2f4f025f | 3014 | if (beneath () == NULL) |
178d6a63 JB |
3015 | { |
3016 | /* This can happen when requesting the transfer of unsupported | |
3017 | objects before a program has been started (and therefore | |
3018 | with the current_target having no target beneath). */ | |
3019 | return TARGET_XFER_E_IO; | |
3020 | } | |
2f4f025f TT |
3021 | return beneath ()->xfer_partial (object, annex, |
3022 | readbuf, writebuf, offset, len, | |
3023 | xfered_len); | |
3929abe9 | 3024 | } |
02c5aecd CF |
3025 | } |
3026 | ||
711e434b PM |
3027 | /* Provide thread local base, i.e. Thread Information Block address. |
3028 | Returns 1 if ptid is found and sets *ADDR to thread_local_base. */ | |
3029 | ||
57810aa7 | 3030 | bool |
f6ac5f3d | 3031 | windows_nat_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 3032 | { |
876d1cd7 | 3033 | windows_thread_info *th; |
711e434b | 3034 | |
0578e87f | 3035 | th = windows_process.thread_rec (ptid, DONT_INVALIDATE_CONTEXT); |
711e434b | 3036 | if (th == NULL) |
57810aa7 | 3037 | return false; |
711e434b PM |
3038 | |
3039 | if (addr != NULL) | |
3040 | *addr = th->thread_local_base; | |
3041 | ||
57810aa7 | 3042 | return true; |
711e434b PM |
3043 | } |
3044 | ||
f6ac5f3d | 3045 | ptid_t |
c80e29db | 3046 | windows_nat_target::get_ada_task_ptid (long lwp, ULONGEST thread) |
1e2f1c5c | 3047 | { |
7c7411bc | 3048 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
1e2f1c5c JB |
3049 | } |
3050 | ||
24cdb46e РИ |
3051 | /* Implementation of the to_thread_name method. */ |
3052 | ||
f6ac5f3d PA |
3053 | const char * |
3054 | windows_nat_target::thread_name (struct thread_info *thr) | |
24cdb46e | 3055 | { |
8bbdbd69 TT |
3056 | windows_thread_info *th |
3057 | = windows_process.thread_rec (thr->ptid, | |
3058 | DONT_INVALIDATE_CONTEXT); | |
3059 | return th->thread_name (); | |
24cdb46e РИ |
3060 | } |
3061 | ||
24e60978 | 3062 | |
6c265988 | 3063 | void _initialize_windows_nat (); |
24e60978 | 3064 | void |
6c265988 | 3065 | _initialize_windows_nat () |
24e60978 | 3066 | { |
df7e5265 GB |
3067 | x86_dr_low.set_control = cygwin_set_dr7; |
3068 | x86_dr_low.set_addr = cygwin_set_dr; | |
3069 | x86_dr_low.get_addr = cygwin_get_dr; | |
3070 | x86_dr_low.get_status = cygwin_get_dr6; | |
3071 | x86_dr_low.get_control = cygwin_get_dr7; | |
51a9c8c5 | 3072 | |
df7e5265 GB |
3073 | /* x86_dr_low.debug_register_length field is set by |
3074 | calling x86_set_debug_register_length function | |
51a9c8c5 | 3075 | in processor windows specific native file. */ |
fa58ee11 | 3076 | |
5f8363d9 TT |
3077 | /* The target is not a global specifically to avoid a C++ "static |
3078 | initializer fiasco" situation. */ | |
3079 | add_inf_child_target (new windows_nat_target); | |
1ef980b9 | 3080 | |
d0d0ab16 CV |
3081 | #ifdef __CYGWIN__ |
3082 | cygwin_internal (CW_SET_DOS_FILE_WARNING, 0); | |
3083 | #endif | |
3084 | ||
463888ab РИ |
3085 | add_com ("signal-event", class_run, signal_event_command, _("\ |
3086 | Signal a crashed process with event ID, to allow its debugging.\n\ | |
3087 | This command is needed in support of setting up GDB as JIT debugger on \ | |
3088 | MS-Windows. The command should be invoked from the GDB command line using \ | |
3089 | the '-ex' command-line option. The ID of the event that blocks the \ | |
3090 | crashed process will be supplied by the Windows JIT debugging mechanism.")); | |
3091 | ||
10325bc5 | 3092 | #ifdef __CYGWIN__ |
5bf193a2 AC |
3093 | add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\ |
3094 | Set use of shell to start subprocess."), _("\ | |
3095 | Show use of shell to start subprocess."), NULL, | |
3096 | NULL, | |
3097 | NULL, /* FIXME: i18n: */ | |
3098 | &setlist, &showlist); | |
3099 | ||
581e13c1 MS |
3100 | add_setshow_boolean_cmd ("cygwin-exceptions", class_support, |
3101 | &cygwin_exceptions, _("\ | |
09280ddf CF |
3102 | Break when an exception is detected in the Cygwin DLL itself."), _("\ |
3103 | Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL, | |
3104 | NULL, | |
3105 | NULL, /* FIXME: i18n: */ | |
3106 | &setlist, &showlist); | |
10325bc5 | 3107 | #endif |
09280ddf | 3108 | |
5bf193a2 AC |
3109 | add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\ |
3110 | Set creation of new console when creating child process."), _("\ | |
3111 | Show creation of new console when creating child process."), NULL, | |
3112 | NULL, | |
3113 | NULL, /* FIXME: i18n: */ | |
3114 | &setlist, &showlist); | |
3115 | ||
3116 | add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\ | |
3117 | Set creation of new group when creating child process."), _("\ | |
3118 | Show creation of new group when creating child process."), NULL, | |
3119 | NULL, | |
3120 | NULL, /* FIXME: i18n: */ | |
3121 | &setlist, &showlist); | |
3122 | ||
3123 | add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\ | |
3124 | Set whether to display execution in child process."), _("\ | |
3125 | Show whether to display execution in child process."), NULL, | |
3126 | NULL, | |
3127 | NULL, /* FIXME: i18n: */ | |
3128 | &setlist, &showlist); | |
3129 | ||
3130 | add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\ | |
3131 | Set whether to display kernel events in child process."), _("\ | |
3132 | Show whether to display kernel events in child process."), NULL, | |
3133 | NULL, | |
3134 | NULL, /* FIXME: i18n: */ | |
3135 | &setlist, &showlist); | |
3136 | ||
3137 | add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\ | |
3138 | Set whether to display memory accesses in child process."), _("\ | |
3139 | Show whether to display memory accesses in child process."), NULL, | |
3140 | NULL, | |
3141 | NULL, /* FIXME: i18n: */ | |
3142 | &setlist, &showlist); | |
3143 | ||
3144 | add_setshow_boolean_cmd ("debugexceptions", class_support, | |
3145 | &debug_exceptions, _("\ | |
3146 | Set whether to display kernel exceptions in child process."), _("\ | |
3147 | Show whether to display kernel exceptions in child process."), NULL, | |
3148 | NULL, | |
3149 | NULL, /* FIXME: i18n: */ | |
3150 | &setlist, &showlist); | |
1ef980b9 | 3151 | |
711e434b | 3152 | init_w32_command_list (); |
c1748f97 PM |
3153 | |
3154 | add_cmd ("selector", class_info, display_selectors, | |
1a966eab | 3155 | _("Display selectors infos."), |
c1748f97 | 3156 | &info_w32_cmdlist); |
9e439f00 TT |
3157 | |
3158 | if (!initialize_loadable ()) | |
3159 | { | |
3160 | /* This will probably fail on Windows 9x/Me. Let the user know | |
3161 | that we're missing some functionality. */ | |
3162 | warning(_("\ | |
3163 | cannot automatically find executable file or library to read symbols.\n\ | |
3164 | Use \"file\" or \"dll\" command to load executable/libraries directly.")); | |
3165 | } | |
24e60978 | 3166 | } |
3cee93ac | 3167 | |
fa4ba8da PM |
3168 | /* Hardware watchpoint support, adapted from go32-nat.c code. */ |
3169 | ||
3170 | /* Pass the address ADDR to the inferior in the I'th debug register. | |
3171 | Here we just store the address in dr array, the registers will be | |
dc05df57 | 3172 | actually set up when windows_continue is called. */ |
9bb9e8ad | 3173 | static void |
fa4ba8da PM |
3174 | cygwin_set_dr (int i, CORE_ADDR addr) |
3175 | { | |
3176 | if (i < 0 || i > 3) | |
f34652de | 3177 | internal_error (_("Invalid register %d in cygwin_set_dr.\n"), i); |
20489cca | 3178 | windows_process.dr[i] = addr; |
296d3d2e | 3179 | |
20489cca | 3180 | for (auto &th : windows_process.thread_list) |
296d3d2e | 3181 | th->debug_registers_changed = true; |
fa4ba8da PM |
3182 | } |
3183 | ||
3184 | /* Pass the value VAL to the inferior in the DR7 debug control | |
3185 | register. Here we just store the address in D_REGS, the watchpoint | |
dc05df57 | 3186 | will be actually set up in windows_wait. */ |
9bb9e8ad PM |
3187 | static void |
3188 | cygwin_set_dr7 (unsigned long val) | |
fa4ba8da | 3189 | { |
20489cca | 3190 | windows_process.dr[7] = (CORE_ADDR) val; |
296d3d2e | 3191 | |
20489cca | 3192 | for (auto &th : windows_process.thread_list) |
296d3d2e | 3193 | th->debug_registers_changed = true; |
fa4ba8da PM |
3194 | } |
3195 | ||
7b50312a PA |
3196 | /* Get the value of debug register I from the inferior. */ |
3197 | ||
3198 | static CORE_ADDR | |
3199 | cygwin_get_dr (int i) | |
3200 | { | |
20489cca | 3201 | return windows_process.dr[i]; |
7b50312a PA |
3202 | } |
3203 | ||
fa4ba8da PM |
3204 | /* Get the value of the DR6 debug status register from the inferior. |
3205 | Here we just return the value stored in dr[6] | |
3206 | by the last call to thread_rec for current_event.dwThreadId id. */ | |
9bb9e8ad | 3207 | static unsigned long |
fa4ba8da PM |
3208 | cygwin_get_dr6 (void) |
3209 | { | |
20489cca | 3210 | return (unsigned long) windows_process.dr[6]; |
fa4ba8da PM |
3211 | } |
3212 | ||
7b50312a PA |
3213 | /* Get the value of the DR7 debug status register from the inferior. |
3214 | Here we just return the value stored in dr[7] by the last call to | |
3215 | thread_rec for current_event.dwThreadId id. */ | |
3216 | ||
3217 | static unsigned long | |
3218 | cygwin_get_dr7 (void) | |
3219 | { | |
20489cca | 3220 | return (unsigned long) windows_process.dr[7]; |
7b50312a PA |
3221 | } |
3222 | ||
2dc38344 | 3223 | /* Determine if the thread referenced by "ptid" is alive |
3cee93ac | 3224 | by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0 |
581e13c1 | 3225 | it means that the thread has died. Otherwise it is assumed to be alive. */ |
f6ac5f3d | 3226 | |
57810aa7 | 3227 | bool |
f6ac5f3d | 3228 | windows_nat_target::thread_alive (ptid_t ptid) |
3cee93ac | 3229 | { |
7c7411bc | 3230 | gdb_assert (ptid.lwp () != 0); |
39f77062 | 3231 | |
0578e87f TT |
3232 | windows_thread_info *th |
3233 | = windows_process.thread_rec (ptid, DONT_INVALIDATE_CONTEXT); | |
3234 | return WaitForSingleObject (th->h, 0) != WAIT_OBJECT_0; | |
3cee93ac CF |
3235 | } |
3236 | ||
6c265988 | 3237 | void _initialize_check_for_gdb_ini (); |
2a3d5645 | 3238 | void |
6c265988 | 3239 | _initialize_check_for_gdb_ini () |
2a3d5645 CF |
3240 | { |
3241 | char *homedir; | |
3242 | if (inhibit_gdbinit) | |
3243 | return; | |
3244 | ||
3245 | homedir = getenv ("HOME"); | |
3246 | if (homedir) | |
3247 | { | |
3248 | char *p; | |
3249 | char *oldini = (char *) alloca (strlen (homedir) + | |
1270fac6 | 3250 | sizeof ("gdb.ini") + 1); |
2a3d5645 CF |
3251 | strcpy (oldini, homedir); |
3252 | p = strchr (oldini, '\0'); | |
0ba1096a | 3253 | if (p > oldini && !IS_DIR_SEPARATOR (p[-1])) |
2a3d5645 CF |
3254 | *p++ = '/'; |
3255 | strcpy (p, "gdb.ini"); | |
3256 | if (access (oldini, 0) == 0) | |
3257 | { | |
3258 | int len = strlen (oldini); | |
1270fac6 | 3259 | char *newini = (char *) alloca (len + 2); |
08850b56 | 3260 | |
1270fac6 | 3261 | xsnprintf (newini, len + 2, "%.*s.gdbinit", |
08850b56 | 3262 | (int) (len - (sizeof ("gdb.ini") - 1)), oldini); |
8a3fe4f8 | 3263 | warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini); |
2a3d5645 CF |
3264 | } |
3265 | } | |
3266 | } |