1 /* Low level interface to Windows debugging, for gdbserver.
2 Copyright (C) 2006-2020 Free Software Foundation, Inc.
4 Contributed by Leo Zayas. Based on "win32-nat.c" from GDB.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb/fileio.h"
24 #include "mem-break.h"
25 #include "win32-low.h"
26 #include "gdbthread.h"
35 #include "gdbsupport/gdb_tilde_expand.h"
36 #include "gdbsupport/common-inferior.h"
37 #include "gdbsupport/gdb_wait.h"
39 using namespace windows_nat
;
42 #include <sys/cygwin.h>
45 #define OUTMSG(X) do { printf X; fflush (stderr); } while (0)
58 #define _T(x) TEXT (x)
62 #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
66 # define GETPROCADDRESS(DLL, PROC) \
67 ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC)))
69 # define GETPROCADDRESS(DLL, PROC) \
70 ((winapi_ ## PROC) GetProcAddress (DLL, #PROC))
73 int using_threads
= 1;
76 static int attaching
= 0;
77 static HANDLE current_process_handle
= NULL
;
78 static DWORD current_process_id
= 0;
79 static DWORD main_thread_id
= 0;
80 static EXCEPTION_RECORD siginfo_er
; /* Contents of $_siginfo */
81 static enum gdb_signal last_sig
= GDB_SIGNAL_0
;
83 /* The current debug event from WaitForDebugEvent. */
84 static DEBUG_EVENT current_event
;
86 /* A status that hasn't been reported to the core yet, and so
87 win32_wait should return it next, instead of fetching the next
88 debug event off the win32 API. */
89 static struct target_waitstatus cached_status
;
91 /* Non zero if an interrupt request is to be satisfied by suspending
93 static int soft_interrupt_requested
= 0;
95 /* Non zero if the inferior is stopped in a simulated breakpoint done
96 by suspending all the threads. */
97 static int faked_breakpoint
= 0;
99 const struct target_desc
*win32_tdesc
;
101 #define NUM_REGS (the_low_target.num_regs)
103 typedef BOOL (WINAPI
*winapi_DebugActiveProcessStop
) (DWORD dwProcessId
);
104 typedef BOOL (WINAPI
*winapi_DebugSetProcessKillOnExit
) (BOOL KillOnExit
);
105 typedef BOOL (WINAPI
*winapi_DebugBreakProcess
) (HANDLE
);
106 typedef BOOL (WINAPI
*winapi_GenerateConsoleCtrlEvent
) (DWORD
, DWORD
);
109 static void win32_add_all_dlls (void);
112 /* Get the thread ID from the current selected inferior (the current
115 current_thread_ptid (void)
120 /* The current debug event from WaitForDebugEvent. */
122 debug_event_ptid (DEBUG_EVENT
*event
)
124 return ptid_t (event
->dwProcessId
, event
->dwThreadId
, 0);
127 /* Get the thread context of the thread associated with TH. */
130 win32_get_thread_context (windows_thread_info
*th
)
132 memset (&th
->context
, 0, sizeof (CONTEXT
));
133 (*the_low_target
.get_thread_context
) (th
);
135 memcpy (&th
->base_context
, &th
->context
, sizeof (CONTEXT
));
139 /* Set the thread context of the thread associated with TH. */
142 win32_set_thread_context (windows_thread_info
*th
)
145 /* Calling SuspendThread on a thread that is running kernel code
146 will report that the suspending was successful, but in fact, that
147 will often not be true. In those cases, the context returned by
148 GetThreadContext will not be correct by the time the thread
149 stops, hence we can't set that context back into the thread when
150 resuming - it will most likely crash the inferior.
151 Unfortunately, there is no way to know when the thread will
152 really stop. To work around it, we'll only write the context
153 back to the thread when either the user or GDB explicitly change
154 it between stopping and resuming. */
155 if (memcmp (&th
->context
, &th
->base_context
, sizeof (CONTEXT
)) != 0)
157 SetThreadContext (th
->h
, &th
->context
);
160 /* Set the thread context of the thread associated with TH. */
163 win32_prepare_to_resume (windows_thread_info
*th
)
165 if (the_low_target
.prepare_to_resume
!= NULL
)
166 (*the_low_target
.prepare_to_resume
) (th
);
169 /* See win32-low.h. */
172 win32_require_context (windows_thread_info
*th
)
174 if (th
->context
.ContextFlags
== 0)
177 win32_get_thread_context (th
);
181 /* See nat/windows-nat.h. */
183 windows_thread_info
*
184 windows_nat::thread_rec (ptid_t ptid
, thread_disposition_type disposition
)
186 thread_info
*thread
= find_thread_ptid (ptid
);
190 windows_thread_info
*th
= (windows_thread_info
*) thread_target_data (thread
);
191 if (disposition
!= DONT_INVALIDATE_CONTEXT
)
192 win32_require_context (th
);
196 /* Add a thread to the thread list. */
197 static windows_thread_info
*
198 child_add_thread (DWORD pid
, DWORD tid
, HANDLE h
, void *tlb
)
200 windows_thread_info
*th
;
201 ptid_t ptid
= ptid_t (pid
, tid
, 0);
203 if ((th
= thread_rec (ptid
, DONT_INVALIDATE_CONTEXT
)))
206 th
= new windows_thread_info (tid
, h
, (CORE_ADDR
) (uintptr_t) tlb
);
208 add_thread (ptid
, th
);
210 if (the_low_target
.thread_added
!= NULL
)
211 (*the_low_target
.thread_added
) (th
);
216 /* Delete a thread from the list of threads. */
218 delete_thread_info (thread_info
*thread
)
220 windows_thread_info
*th
= (windows_thread_info
*) thread_target_data (thread
);
222 remove_thread (thread
);
226 /* Delete a thread from the list of threads. */
228 child_delete_thread (DWORD pid
, DWORD tid
)
230 /* If the last thread is exiting, just return. */
231 if (all_threads
.size () == 1)
234 thread_info
*thread
= find_thread_ptid (ptid_t (pid
, tid
));
238 delete_thread_info (thread
);
241 /* These watchpoint related wrapper functions simply pass on the function call
242 if the low target has registered a corresponding function. */
245 win32_process_target::supports_z_point_type (char z_type
)
247 return (the_low_target
.supports_z_point_type
!= NULL
248 && the_low_target
.supports_z_point_type (z_type
));
252 win32_process_target::insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
253 int size
, raw_breakpoint
*bp
)
255 if (the_low_target
.insert_point
!= NULL
)
256 return the_low_target
.insert_point (type
, addr
, size
, bp
);
258 /* Unsupported (see target.h). */
263 win32_process_target::remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
264 int size
, raw_breakpoint
*bp
)
266 if (the_low_target
.remove_point
!= NULL
)
267 return the_low_target
.remove_point (type
, addr
, size
, bp
);
269 /* Unsupported (see target.h). */
274 win32_process_target::stopped_by_watchpoint ()
276 if (the_low_target
.stopped_by_watchpoint
!= NULL
)
277 return the_low_target
.stopped_by_watchpoint ();
283 win32_process_target::stopped_data_address ()
285 if (the_low_target
.stopped_data_address
!= NULL
)
286 return the_low_target
.stopped_data_address ();
292 /* Transfer memory from/to the debugged process. */
294 child_xfer_memory (CORE_ADDR memaddr
, char *our
, int len
,
295 int write
, process_stratum_target
*target
)
300 uintptr_t addr
= (uintptr_t) memaddr
;
304 success
= WriteProcessMemory (current_process_handle
, (LPVOID
) addr
,
305 (LPCVOID
) our
, len
, &done
);
307 lasterror
= GetLastError ();
308 FlushInstructionCache (current_process_handle
, (LPCVOID
) addr
, len
);
312 success
= ReadProcessMemory (current_process_handle
, (LPCVOID
) addr
,
313 (LPVOID
) our
, len
, &done
);
315 lasterror
= GetLastError ();
317 if (!success
&& lasterror
== ERROR_PARTIAL_COPY
&& done
> 0)
320 return success
? done
: -1;
323 /* Clear out any old thread list and reinitialize it to a pristine
326 child_init_thread_list (void)
328 for_each_thread (delete_thread_info
);
331 /* Zero during the child initialization phase, and nonzero otherwise. */
333 static int child_initialization_done
= 0;
336 do_initial_child_stuff (HANDLE proch
, DWORD pid
, int attached
)
338 struct process_info
*proc
;
340 last_sig
= GDB_SIGNAL_0
;
342 current_process_handle
= proch
;
343 current_process_id
= pid
;
346 soft_interrupt_requested
= 0;
347 faked_breakpoint
= 0;
349 memset (¤t_event
, 0, sizeof (current_event
));
351 proc
= add_process (pid
, attached
);
352 proc
->tdesc
= win32_tdesc
;
353 child_init_thread_list ();
354 child_initialization_done
= 0;
356 if (the_low_target
.initial_stuff
!= NULL
)
357 (*the_low_target
.initial_stuff
) ();
359 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
361 /* Flush all currently pending debug events (thread and dll list) up
362 to the initial breakpoint. */
365 struct target_waitstatus status
;
367 the_target
->wait (minus_one_ptid
, &status
, 0);
369 /* Note win32_wait doesn't return thread events. */
370 if (status
.kind
!= TARGET_WAITKIND_LOADED
)
372 cached_status
= status
;
377 struct thread_resume resume
;
379 resume
.thread
= minus_one_ptid
;
380 resume
.kind
= resume_continue
;
383 the_target
->resume (&resume
, 1);
388 /* Now that the inferior has been started and all DLLs have been mapped,
389 we can iterate over all DLLs and load them in.
391 We avoid doing it any earlier because, on certain versions of Windows,
392 LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
393 we have seen on Windows 8.1 that the ntdll.dll load event does not
394 include the DLL name, preventing us from creating an associated SO.
395 A possible explanation is that ntdll.dll might be mapped before
396 the SO info gets created by the Windows system -- ntdll.dll is
397 the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
398 do not seem to suffer from that problem.
400 Rather than try to work around this sort of issue, it is much
401 simpler to just ignore DLL load/unload events during the startup
402 phase, and then process them all in one batch now. */
403 win32_add_all_dlls ();
406 child_initialization_done
= 1;
409 /* Resume all artificially suspended threads if we are continuing
412 continue_one_thread (thread_info
*thread
, int thread_id
)
414 windows_thread_info
*th
= (windows_thread_info
*) thread_target_data (thread
);
416 if (thread_id
== -1 || thread_id
== th
->tid
)
418 win32_prepare_to_resume (th
);
422 if (th
->context
.ContextFlags
)
424 win32_set_thread_context (th
);
425 th
->context
.ContextFlags
= 0;
434 child_continue (DWORD continue_status
, int thread_id
)
436 /* The inferior will only continue after the ContinueDebugEvent
438 for_each_thread ([&] (thread_info
*thread
)
440 continue_one_thread (thread
, thread_id
);
442 faked_breakpoint
= 0;
444 if (!ContinueDebugEvent (current_event
.dwProcessId
,
445 current_event
.dwThreadId
,
452 /* Fetch register(s) from the current thread context. */
454 child_fetch_inferior_registers (struct regcache
*regcache
, int r
)
457 windows_thread_info
*th
= thread_rec (current_thread_ptid (),
459 if (r
== -1 || r
> NUM_REGS
)
460 child_fetch_inferior_registers (regcache
, NUM_REGS
);
462 for (regno
= 0; regno
< r
; regno
++)
463 (*the_low_target
.fetch_inferior_register
) (regcache
, th
, regno
);
466 /* Store a new register value into the current thread context. We don't
467 change the program's context until later, when we resume it. */
469 child_store_inferior_registers (struct regcache
*regcache
, int r
)
472 windows_thread_info
*th
= thread_rec (current_thread_ptid (),
474 if (r
== -1 || r
== 0 || r
> NUM_REGS
)
475 child_store_inferior_registers (regcache
, NUM_REGS
);
477 for (regno
= 0; regno
< r
; regno
++)
478 (*the_low_target
.store_inferior_register
) (regcache
, th
, regno
);
481 /* Map the Windows error number in ERROR to a locale-dependent error
482 message string and return a pointer to it. Typically, the values
483 for ERROR come from GetLastError.
485 The string pointed to shall not be modified by the application,
486 but may be overwritten by a subsequent call to strwinerror
488 The strwinerror function does not change the current setting
492 strwinerror (DWORD error
)
494 static char buf
[1024];
496 DWORD lasterr
= GetLastError ();
497 DWORD chars
= FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
498 | FORMAT_MESSAGE_ALLOCATE_BUFFER
,
501 0, /* Default language */
507 /* If there is an \r\n appended, zap it. */
509 && msgbuf
[chars
- 2] == '\r'
510 && msgbuf
[chars
- 1] == '\n')
516 if (chars
> ((COUNTOF (buf
)) - 1))
518 chars
= COUNTOF (buf
) - 1;
523 wcstombs (buf
, msgbuf
, chars
+ 1);
525 strncpy (buf
, msgbuf
, chars
+ 1);
530 sprintf (buf
, "unknown win32 error (%u)", (unsigned) error
);
532 SetLastError (lasterr
);
537 create_process (const char *program
, char *args
,
538 DWORD flags
, PROCESS_INFORMATION
*pi
)
540 const char *inferior_cwd
= get_inferior_cwd ();
542 size_t argslen
, proglen
;
544 proglen
= strlen (program
) + 1;
545 argslen
= strlen (args
) + proglen
;
548 wchar_t *p
, *wprogram
, *wargs
, *wcwd
= NULL
;
550 wprogram
= (wchar_t *) alloca (proglen
* sizeof (wchar_t));
551 mbstowcs (wprogram
, program
, proglen
);
553 for (p
= wprogram
; *p
; ++p
)
557 wargs
= alloca ((argslen
+ 1) * sizeof (wchar_t));
558 wcscpy (wargs
, wprogram
);
559 wcscat (wargs
, L
" ");
560 mbstowcs (wargs
+ proglen
, args
, argslen
+ 1 - proglen
);
562 if (inferior_cwd
!= NULL
)
564 std::string expanded_infcwd
= gdb_tilde_expand (inferior_cwd
);
565 std::replace (expanded_infcwd
.begin (), expanded_infcwd
.end (),
567 wcwd
= alloca ((expanded_infcwd
.size () + 1) * sizeof (wchar_t));
568 if (mbstowcs (wcwd
, expanded_infcwd
.c_str (),
569 expanded_infcwd
.size () + 1) == NULL
)
572 Could not convert the expanded inferior cwd to wide-char."));
576 ret
= CreateProcessW (wprogram
, /* image name */
577 wargs
, /* command line */
578 NULL
, /* security, not supported */
579 NULL
, /* thread, not supported */
580 FALSE
, /* inherit handles, not supported */
581 flags
, /* start flags */
582 NULL
, /* environment, not supported */
583 wcwd
, /* current directory */
584 NULL
, /* start info, not supported */
587 STARTUPINFOA si
= { sizeof (STARTUPINFOA
) };
588 char *program_and_args
= (char *) alloca (argslen
+ 1);
590 strcpy (program_and_args
, program
);
591 strcat (program_and_args
, " ");
592 strcat (program_and_args
, args
);
593 ret
= CreateProcessA (program
, /* image name */
594 program_and_args
, /* command line */
597 TRUE
, /* inherit handles */
598 flags
, /* start flags */
599 NULL
, /* environment */
600 /* current directory */
601 (inferior_cwd
== NULL
603 : gdb_tilde_expand (inferior_cwd
).c_str()),
604 &si
, /* start info */
611 /* Start a new process.
612 PROGRAM is the program name.
613 PROGRAM_ARGS is the vector containing the inferior's args.
614 Returns the new PID on success, -1 on failure. Registers the new
615 process with the process list. */
617 win32_process_target::create_inferior (const char *program
,
618 const std::vector
<char *> &program_args
)
620 client_state
&cs
= get_client_state ();
622 char real_path
[PATH_MAX
];
623 char *orig_path
, *new_path
, *path_ptr
;
627 PROCESS_INFORMATION pi
;
629 std::string str_program_args
= stringify_argv (program_args
);
630 char *args
= (char *) str_program_args
.c_str ();
632 /* win32_wait needs to know we're not attaching. */
636 error ("No executable specified, specify executable to debug.\n");
638 flags
= DEBUG_PROCESS
| DEBUG_ONLY_THIS_PROCESS
;
642 path_ptr
= getenv ("PATH");
645 int size
= cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, NULL
, 0);
646 orig_path
= (char *) alloca (strlen (path_ptr
) + 1);
647 new_path
= (char *) alloca (size
);
648 strcpy (orig_path
, path_ptr
);
649 cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, new_path
, size
);
650 setenv ("PATH", new_path
, 1);
652 cygwin_conv_path (CCP_POSIX_TO_WIN_A
, program
, real_path
, PATH_MAX
);
656 OUTMSG2 (("Command line is \"%s %s\"\n", program
, args
));
658 #ifdef CREATE_NEW_PROCESS_GROUP
659 flags
|= CREATE_NEW_PROCESS_GROUP
;
662 ret
= create_process (program
, args
, flags
, &pi
);
663 err
= GetLastError ();
664 if (!ret
&& err
== ERROR_FILE_NOT_FOUND
)
666 char *exename
= (char *) alloca (strlen (program
) + 5);
667 strcat (strcpy (exename
, program
), ".exe");
668 ret
= create_process (exename
, args
, flags
, &pi
);
669 err
= GetLastError ();
674 setenv ("PATH", orig_path
, 1);
679 error ("Error creating process \"%s %s\", (error %d): %s\n",
680 program
, args
, (int) err
, strwinerror (err
));
684 OUTMSG2 (("Process created: %s %s\n", program
, (char *) args
));
688 /* On Windows CE this handle can't be closed. The OS reuses
689 it in the debug events, while the 9x/NT versions of Windows
690 probably use a DuplicateHandle'd one. */
691 CloseHandle (pi
.hThread
);
694 do_initial_child_stuff (pi
.hProcess
, pi
.dwProcessId
, 0);
696 /* Wait till we are at 1st instruction in program, return new pid
697 (assuming success). */
698 cs
.last_ptid
= wait (ptid_t (current_process_id
), &cs
.last_status
, 0);
700 /* Necessary for handle_v_kill. */
701 signal_pid
= current_process_id
;
703 return current_process_id
;
706 /* Attach to a running process.
707 PID is the process ID to attach to, specified by the user
708 or a higher layer. */
710 win32_process_target::attach (unsigned long pid
)
713 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
716 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
718 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
720 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
722 h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
725 if (DebugActiveProcess (pid
))
727 if (DebugSetProcessKillOnExit
!= NULL
)
728 DebugSetProcessKillOnExit (FALSE
);
730 /* win32_wait needs to know we're attaching. */
732 do_initial_child_stuff (h
, pid
, 1);
739 err
= GetLastError ();
740 error ("Attach to process failed (error %d): %s\n",
741 (int) err
, strwinerror (err
));
744 /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */
746 handle_output_debug_string (void)
748 #define READ_BUFFER_LEN 1024
750 char s
[READ_BUFFER_LEN
+ 1] = { 0 };
751 DWORD nbytes
= current_event
.u
.DebugString
.nDebugStringLength
;
756 if (nbytes
> READ_BUFFER_LEN
)
757 nbytes
= READ_BUFFER_LEN
;
759 addr
= (CORE_ADDR
) (size_t) current_event
.u
.DebugString
.lpDebugStringData
;
761 if (current_event
.u
.DebugString
.fUnicode
)
763 /* The event tells us how many bytes, not chars, even
765 WCHAR buffer
[(READ_BUFFER_LEN
+ 1) / sizeof (WCHAR
)] = { 0 };
766 if (read_inferior_memory (addr
, (unsigned char *) buffer
, nbytes
) != 0)
768 wcstombs (s
, buffer
, (nbytes
+ 1) / sizeof (WCHAR
));
772 if (read_inferior_memory (addr
, (unsigned char *) s
, nbytes
) != 0)
776 if (!startswith (s
, "cYg"))
786 #undef READ_BUFFER_LEN
790 win32_clear_inferiors (void)
792 if (current_process_handle
!= NULL
)
793 CloseHandle (current_process_handle
);
795 for_each_thread (delete_thread_info
);
796 siginfo_er
.ExceptionCode
= 0;
800 /* Implementation of target_ops::kill. */
803 win32_process_target::kill (process_info
*process
)
805 TerminateProcess (current_process_handle
, 0);
808 if (!child_continue (DBG_CONTINUE
, -1))
810 if (!WaitForDebugEvent (¤t_event
, INFINITE
))
812 if (current_event
.dwDebugEventCode
== EXIT_PROCESS_DEBUG_EVENT
)
814 else if (current_event
.dwDebugEventCode
== OUTPUT_DEBUG_STRING_EVENT
)
815 handle_output_debug_string ();
818 win32_clear_inferiors ();
820 remove_process (process
);
824 /* Implementation of target_ops::detach. */
827 win32_process_target::detach (process_info
*process
)
829 winapi_DebugActiveProcessStop DebugActiveProcessStop
= NULL
;
830 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
832 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
834 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
836 DebugActiveProcessStop
= GETPROCADDRESS (dll
, DebugActiveProcessStop
);
837 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
839 if (DebugSetProcessKillOnExit
== NULL
840 || DebugActiveProcessStop
== NULL
)
844 struct thread_resume resume
;
845 resume
.thread
= minus_one_ptid
;
846 resume
.kind
= resume_continue
;
848 this->resume (&resume
, 1);
851 if (!DebugActiveProcessStop (current_process_id
))
854 DebugSetProcessKillOnExit (FALSE
);
855 remove_process (process
);
857 win32_clear_inferiors ();
862 win32_process_target::mourn (struct process_info
*process
)
864 remove_process (process
);
867 /* Implementation of target_ops::join. */
870 win32_process_target::join (int pid
)
872 HANDLE h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
875 WaitForSingleObject (h
, INFINITE
);
880 /* Return true iff the thread with thread ID TID is alive. */
882 win32_process_target::thread_alive (ptid_t ptid
)
884 /* Our thread list is reliable; don't bother to poll target
886 return find_thread_ptid (ptid
) != NULL
;
889 /* Resume the inferior process. RESUME_INFO describes how we want
892 win32_process_target::resume (thread_resume
*resume_info
, size_t n
)
897 windows_thread_info
*th
;
898 DWORD continue_status
= DBG_CONTINUE
;
901 /* This handles the very limited set of resume packets that GDB can
902 currently produce. */
904 if (n
== 1 && resume_info
[0].thread
== minus_one_ptid
)
909 /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make
910 the Windows resume code do the right thing for thread switching. */
911 tid
= current_event
.dwThreadId
;
913 if (resume_info
[0].thread
!= minus_one_ptid
)
915 sig
= gdb_signal_from_host (resume_info
[0].sig
);
916 step
= resume_info
[0].kind
== resume_step
;
924 if (sig
!= GDB_SIGNAL_0
)
926 if (current_event
.dwDebugEventCode
!= EXCEPTION_DEBUG_EVENT
)
928 OUTMSG (("Cannot continue with signal %s here.\n",
929 gdb_signal_to_string (sig
)));
931 else if (sig
== last_sig
)
932 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
934 OUTMSG (("Can only continue with received signal %s.\n",
935 gdb_signal_to_string (last_sig
)));
938 last_sig
= GDB_SIGNAL_0
;
940 /* Get context for the currently selected thread. */
941 ptid
= debug_event_ptid (¤t_event
);
942 th
= thread_rec (ptid
, DONT_INVALIDATE_CONTEXT
);
945 win32_prepare_to_resume (th
);
947 if (th
->context
.ContextFlags
)
949 /* Move register values from the inferior into the thread
950 context structure. */
951 regcache_invalidate ();
955 if (the_low_target
.single_step
!= NULL
)
956 (*the_low_target
.single_step
) (th
);
958 error ("Single stepping is not supported "
959 "in this configuration.\n");
962 win32_set_thread_context (th
);
963 th
->context
.ContextFlags
= 0;
967 /* Allow continuing with the same signal that interrupted us.
968 Otherwise complain. */
970 child_continue (continue_status
, tid
);
974 win32_add_one_solib (const char *name
, CORE_ADDR load_addr
)
976 char buf
[MAX_PATH
+ 1];
977 char buf2
[MAX_PATH
+ 1];
980 WIN32_FIND_DATA w32_fd
;
981 WCHAR wname
[MAX_PATH
+ 1];
982 mbstowcs (wname
, name
, MAX_PATH
);
983 HANDLE h
= FindFirstFile (wname
, &w32_fd
);
985 WIN32_FIND_DATAA w32_fd
;
986 HANDLE h
= FindFirstFileA (name
, &w32_fd
);
989 /* The symbols in a dll are offset by 0x1000, which is the
990 offset from 0 of the first byte in an image - because
991 of the file header and the section alignment. */
994 if (h
== INVALID_HANDLE_VALUE
)
1002 char cwd
[MAX_PATH
+ 1];
1004 if (GetCurrentDirectoryA (MAX_PATH
+ 1, cwd
))
1006 p
= strrchr (buf
, '\\');
1009 SetCurrentDirectoryA (buf
);
1010 GetFullPathNameA (w32_fd
.cFileName
, MAX_PATH
, buf
, &p
);
1011 SetCurrentDirectoryA (cwd
);
1018 if (strcasecmp (buf
, "ntdll.dll") == 0)
1020 GetSystemDirectoryA (buf
, sizeof (buf
));
1021 strcat (buf
, "\\ntdll.dll");
1026 cygwin_conv_path (CCP_WIN_A_TO_POSIX
, buf
, buf2
, sizeof (buf2
));
1031 loaded_dll (buf2
, load_addr
);
1034 typedef BOOL (WINAPI
*winapi_EnumProcessModules
) (HANDLE
, HMODULE
*,
1036 typedef BOOL (WINAPI
*winapi_GetModuleInformation
) (HANDLE
, HMODULE
,
1037 LPMODULEINFO
, DWORD
);
1038 typedef DWORD (WINAPI
*winapi_GetModuleFileNameExA
) (HANDLE
, HMODULE
,
1041 static winapi_EnumProcessModules win32_EnumProcessModules
;
1042 static winapi_GetModuleInformation win32_GetModuleInformation
;
1043 static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA
;
1048 static int psapi_loaded
= 0;
1049 static HMODULE dll
= NULL
;
1054 dll
= LoadLibrary (TEXT("psapi.dll"));
1057 win32_EnumProcessModules
=
1058 GETPROCADDRESS (dll
, EnumProcessModules
);
1059 win32_GetModuleInformation
=
1060 GETPROCADDRESS (dll
, GetModuleInformation
);
1061 win32_GetModuleFileNameExA
=
1062 GETPROCADDRESS (dll
, GetModuleFileNameExA
);
1065 return (win32_EnumProcessModules
!= NULL
1066 && win32_GetModuleInformation
!= NULL
1067 && win32_GetModuleFileNameExA
!= NULL
);
1072 /* Iterate over all DLLs currently mapped by our inferior, and
1073 add them to our list of solibs. */
1076 win32_add_all_dlls (void)
1080 HMODULE
*DllHandle
= dh_buf
;
1088 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1093 if (!ok
|| !cbNeeded
)
1096 DllHandle
= (HMODULE
*) alloca (cbNeeded
);
1100 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1107 for (i
= 1; i
< ((size_t) cbNeeded
/ sizeof (HMODULE
)); i
++)
1110 char dll_name
[MAX_PATH
];
1112 if (!(*win32_GetModuleInformation
) (current_process_handle
,
1117 if ((*win32_GetModuleFileNameExA
) (current_process_handle
,
1122 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) mi
.lpBaseOfDll
);
1127 typedef HANDLE (WINAPI
*winapi_CreateToolhelp32Snapshot
) (DWORD
, DWORD
);
1128 typedef BOOL (WINAPI
*winapi_Module32First
) (HANDLE
, LPMODULEENTRY32
);
1129 typedef BOOL (WINAPI
*winapi_Module32Next
) (HANDLE
, LPMODULEENTRY32
);
1131 /* Handle a DLL load event.
1133 This function assumes that this event did not occur during inferior
1134 initialization, where their event info may be incomplete (see
1135 do_initial_child_stuff and win32_add_all_dlls for more info on
1136 how we handle DLL loading during that phase). */
1139 handle_load_dll (void)
1141 LOAD_DLL_DEBUG_INFO
*event
= ¤t_event
.u
.LoadDll
;
1142 const char *dll_name
;
1144 dll_name
= get_image_name (current_process_handle
,
1145 event
->lpImageName
, event
->fUnicode
);
1149 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) event
->lpBaseOfDll
);
1152 /* Handle a DLL unload event.
1154 This function assumes that this event did not occur during inferior
1155 initialization, where their event info may be incomplete (see
1156 do_initial_child_stuff and win32_add_one_solib for more info
1157 on how we handle DLL loading during that phase). */
1160 handle_unload_dll (void)
1162 CORE_ADDR load_addr
=
1163 (CORE_ADDR
) (uintptr_t) current_event
.u
.UnloadDll
.lpBaseOfDll
;
1165 /* The symbols in a dll are offset by 0x1000, which is the
1166 offset from 0 of the first byte in an image - because
1167 of the file header and the section alignment. */
1168 load_addr
+= 0x1000;
1169 unloaded_dll (NULL
, load_addr
);
1173 handle_exception (struct target_waitstatus
*ourstatus
)
1175 DWORD code
= current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
;
1177 memcpy (&siginfo_er
, ¤t_event
.u
.Exception
.ExceptionRecord
,
1180 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1184 case EXCEPTION_ACCESS_VIOLATION
:
1185 OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION"));
1186 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1188 case STATUS_STACK_OVERFLOW
:
1189 OUTMSG2 (("STATUS_STACK_OVERFLOW"));
1190 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1192 case STATUS_FLOAT_DENORMAL_OPERAND
:
1193 OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND"));
1194 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1196 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED
:
1197 OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"));
1198 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1200 case STATUS_FLOAT_INEXACT_RESULT
:
1201 OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT"));
1202 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1204 case STATUS_FLOAT_INVALID_OPERATION
:
1205 OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION"));
1206 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1208 case STATUS_FLOAT_OVERFLOW
:
1209 OUTMSG2 (("STATUS_FLOAT_OVERFLOW"));
1210 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1212 case STATUS_FLOAT_STACK_CHECK
:
1213 OUTMSG2 (("STATUS_FLOAT_STACK_CHECK"));
1214 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1216 case STATUS_FLOAT_UNDERFLOW
:
1217 OUTMSG2 (("STATUS_FLOAT_UNDERFLOW"));
1218 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1220 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1221 OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO"));
1222 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1224 case STATUS_INTEGER_DIVIDE_BY_ZERO
:
1225 OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO"));
1226 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1228 case STATUS_INTEGER_OVERFLOW
:
1229 OUTMSG2 (("STATUS_INTEGER_OVERFLOW"));
1230 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1232 case EXCEPTION_BREAKPOINT
:
1233 OUTMSG2 (("EXCEPTION_BREAKPOINT"));
1234 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1236 /* Remove the initial breakpoint. */
1237 check_breakpoints ((CORE_ADDR
) (long) current_event
1238 .u
.Exception
.ExceptionRecord
.ExceptionAddress
);
1242 OUTMSG2 (("DBG_CONTROL_C"));
1243 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1245 case DBG_CONTROL_BREAK
:
1246 OUTMSG2 (("DBG_CONTROL_BREAK"));
1247 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1249 case EXCEPTION_SINGLE_STEP
:
1250 OUTMSG2 (("EXCEPTION_SINGLE_STEP"));
1251 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1253 case EXCEPTION_ILLEGAL_INSTRUCTION
:
1254 OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION"));
1255 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1257 case EXCEPTION_PRIV_INSTRUCTION
:
1258 OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION"));
1259 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1261 case EXCEPTION_NONCONTINUABLE_EXCEPTION
:
1262 OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION"));
1263 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1266 if (current_event
.u
.Exception
.dwFirstChance
)
1268 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1271 OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s",
1272 (unsigned) current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
,
1273 phex_nz ((uintptr_t) current_event
.u
.Exception
.ExceptionRecord
.
1274 ExceptionAddress
, sizeof (uintptr_t))));
1275 ourstatus
->value
.sig
= GDB_SIGNAL_UNKNOWN
;
1279 last_sig
= ourstatus
->value
.sig
;
1284 suspend_one_thread (thread_info
*thread
)
1286 windows_thread_info
*th
= (windows_thread_info
*) thread_target_data (thread
);
1292 fake_breakpoint_event (void)
1294 OUTMSG2(("fake_breakpoint_event\n"));
1296 faked_breakpoint
= 1;
1298 memset (¤t_event
, 0, sizeof (current_event
));
1299 current_event
.dwThreadId
= main_thread_id
;
1300 current_event
.dwDebugEventCode
= EXCEPTION_DEBUG_EVENT
;
1301 current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
1302 = EXCEPTION_BREAKPOINT
;
1304 for_each_thread (suspend_one_thread
);
1309 auto_delete_breakpoint (CORE_ADDR stop_pc
)
1315 /* Get the next event from the child. */
1318 get_child_debug_event (struct target_waitstatus
*ourstatus
)
1322 last_sig
= GDB_SIGNAL_0
;
1323 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1325 /* Check if GDB sent us an interrupt request. */
1326 check_remote_input_interrupt_request ();
1328 if (soft_interrupt_requested
)
1330 soft_interrupt_requested
= 0;
1331 fake_breakpoint_event ();
1340 /* WinCE doesn't set an initial breakpoint automatically. To
1341 stop the inferior, we flush all currently pending debug
1342 events -- the thread list and the dll list are always
1343 reported immediatelly without delay, then, we suspend all
1344 threads and pretend we saw a trap at the current PC of the
1347 Contrary to desktop Windows, Windows CE *does* report the dll
1348 names on LOAD_DLL_DEBUG_EVENTs resulting from a
1349 DebugActiveProcess call. This limits the way we can detect
1350 if all the dlls have already been reported. If we get a real
1351 debug event before leaving attaching, the worst that will
1352 happen is the user will see a spurious breakpoint. */
1354 current_event
.dwDebugEventCode
= 0;
1355 if (!WaitForDebugEvent (¤t_event
, 0))
1357 OUTMSG2(("no attach events left\n"));
1358 fake_breakpoint_event ();
1362 OUTMSG2(("got attach event\n"));
1367 /* Keep the wait time low enough for comfortable remote
1368 interruption, but high enough so gdbserver doesn't become a
1370 if (!WaitForDebugEvent (¤t_event
, 250))
1372 DWORD e
= GetLastError();
1374 if (e
== ERROR_PIPE_NOT_CONNECTED
)
1376 /* This will happen if the loader fails to succesfully
1377 load the application, e.g., if the main executable
1378 tries to pull in a non-existing export from a
1380 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1381 ourstatus
->value
.integer
= 1;
1391 switch (current_event
.dwDebugEventCode
)
1393 case CREATE_THREAD_DEBUG_EVENT
:
1394 OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT "
1395 "for pid=%u tid=%x)\n",
1396 (unsigned) current_event
.dwProcessId
,
1397 (unsigned) current_event
.dwThreadId
));
1399 /* Record the existence of this thread. */
1400 child_add_thread (current_event
.dwProcessId
,
1401 current_event
.dwThreadId
,
1402 current_event
.u
.CreateThread
.hThread
,
1403 current_event
.u
.CreateThread
.lpThreadLocalBase
);
1406 case EXIT_THREAD_DEBUG_EVENT
:
1407 OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT "
1408 "for pid=%u tid=%x\n",
1409 (unsigned) current_event
.dwProcessId
,
1410 (unsigned) current_event
.dwThreadId
));
1411 child_delete_thread (current_event
.dwProcessId
,
1412 current_event
.dwThreadId
);
1414 current_thread
= get_first_thread ();
1417 case CREATE_PROCESS_DEBUG_EVENT
:
1418 OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT "
1419 "for pid=%u tid=%x\n",
1420 (unsigned) current_event
.dwProcessId
,
1421 (unsigned) current_event
.dwThreadId
));
1422 CloseHandle (current_event
.u
.CreateProcessInfo
.hFile
);
1424 current_process_handle
= current_event
.u
.CreateProcessInfo
.hProcess
;
1425 main_thread_id
= current_event
.dwThreadId
;
1427 /* Add the main thread. */
1428 child_add_thread (current_event
.dwProcessId
,
1430 current_event
.u
.CreateProcessInfo
.hThread
,
1431 current_event
.u
.CreateProcessInfo
.lpThreadLocalBase
);
1436 /* Windows CE doesn't set the initial breakpoint
1437 automatically like the desktop versions of Windows do.
1438 We add it explicitly here. It will be removed as soon as
1440 set_breakpoint_at ((CORE_ADDR
) (long) current_event
.u
1441 .CreateProcessInfo
.lpStartAddress
,
1442 auto_delete_breakpoint
);
1447 case EXIT_PROCESS_DEBUG_EVENT
:
1448 OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT "
1449 "for pid=%u tid=%x\n",
1450 (unsigned) current_event
.dwProcessId
,
1451 (unsigned) current_event
.dwThreadId
));
1453 DWORD exit_status
= current_event
.u
.ExitProcess
.dwExitCode
;
1454 /* If the exit status looks like a fatal exception, but we
1455 don't recognize the exception's code, make the original
1456 exit status value available, to avoid losing information. */
1458 = WIFSIGNALED (exit_status
) ? WTERMSIG (exit_status
) : -1;
1459 if (exit_signal
== -1)
1461 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1462 ourstatus
->value
.integer
= exit_status
;
1466 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
1467 ourstatus
->value
.sig
= gdb_signal_from_host (exit_signal
);
1470 child_continue (DBG_CONTINUE
, -1);
1471 CloseHandle (current_process_handle
);
1472 current_process_handle
= NULL
;
1475 case LOAD_DLL_DEBUG_EVENT
:
1476 OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT "
1477 "for pid=%u tid=%x\n",
1478 (unsigned) current_event
.dwProcessId
,
1479 (unsigned) current_event
.dwThreadId
));
1480 CloseHandle (current_event
.u
.LoadDll
.hFile
);
1481 if (! child_initialization_done
)
1485 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1486 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1489 case UNLOAD_DLL_DEBUG_EVENT
:
1490 OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT "
1491 "for pid=%u tid=%x\n",
1492 (unsigned) current_event
.dwProcessId
,
1493 (unsigned) current_event
.dwThreadId
));
1494 if (! child_initialization_done
)
1496 handle_unload_dll ();
1497 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1498 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1501 case EXCEPTION_DEBUG_EVENT
:
1502 OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT "
1503 "for pid=%u tid=%x\n",
1504 (unsigned) current_event
.dwProcessId
,
1505 (unsigned) current_event
.dwThreadId
));
1506 handle_exception (ourstatus
);
1509 case OUTPUT_DEBUG_STRING_EVENT
:
1510 /* A message from the kernel (or Cygwin). */
1511 OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT "
1512 "for pid=%u tid=%x\n",
1513 (unsigned) current_event
.dwProcessId
,
1514 (unsigned) current_event
.dwThreadId
));
1515 handle_output_debug_string ();
1519 OUTMSG2 (("gdbserver: kernel event unknown "
1520 "for pid=%u tid=%x code=%x\n",
1521 (unsigned) current_event
.dwProcessId
,
1522 (unsigned) current_event
.dwThreadId
,
1523 (unsigned) current_event
.dwDebugEventCode
));
1527 ptid
= debug_event_ptid (¤t_event
);
1528 current_thread
= find_thread_ptid (ptid
);
1532 /* Wait for the inferior process to change state.
1533 STATUS will be filled in with a response code to send to GDB.
1534 Returns the signal which caused the process to stop. */
1536 win32_process_target::wait (ptid_t ptid
, target_waitstatus
*ourstatus
,
1539 struct regcache
*regcache
;
1541 if (cached_status
.kind
!= TARGET_WAITKIND_IGNORE
)
1543 /* The core always does a wait after creating the inferior, and
1544 do_initial_child_stuff already ran the inferior to the
1545 initial breakpoint (or an exit, if creating the process
1546 fails). Report it now. */
1547 *ourstatus
= cached_status
;
1548 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
1549 return debug_event_ptid (¤t_event
);
1554 if (!get_child_debug_event (ourstatus
))
1557 switch (ourstatus
->kind
)
1559 case TARGET_WAITKIND_EXITED
:
1560 OUTMSG2 (("Child exited with retcode = %x\n",
1561 ourstatus
->value
.integer
));
1562 win32_clear_inferiors ();
1563 return ptid_t (current_event
.dwProcessId
);
1564 case TARGET_WAITKIND_STOPPED
:
1565 case TARGET_WAITKIND_SIGNALLED
:
1566 case TARGET_WAITKIND_LOADED
:
1567 OUTMSG2 (("Child Stopped with signal = %d \n",
1568 ourstatus
->value
.sig
));
1570 regcache
= get_thread_regcache (current_thread
, 1);
1571 child_fetch_inferior_registers (regcache
, -1);
1572 return debug_event_ptid (¤t_event
);
1574 OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus
->kind
));
1576 case TARGET_WAITKIND_SPURIOUS
:
1577 /* do nothing, just continue */
1578 child_continue (DBG_CONTINUE
, -1);
1584 /* Fetch registers from the inferior process.
1585 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
1587 win32_process_target::fetch_registers (regcache
*regcache
, int regno
)
1589 child_fetch_inferior_registers (regcache
, regno
);
1592 /* Store registers to the inferior process.
1593 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
1595 win32_process_target::store_registers (regcache
*regcache
, int regno
)
1597 child_store_inferior_registers (regcache
, regno
);
1600 /* Read memory from the inferior process. This should generally be
1601 called through read_inferior_memory, which handles breakpoint shadowing.
1602 Read LEN bytes at MEMADDR into a buffer at MYADDR. */
1604 win32_process_target::read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
,
1607 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 0, 0) != len
;
1610 /* Write memory to the inferior process. This should generally be
1611 called through write_inferior_memory, which handles breakpoint shadowing.
1612 Write LEN bytes from the buffer at MYADDR to MEMADDR.
1613 Returns 0 on success and errno on failure. */
1615 win32_process_target::write_memory (CORE_ADDR memaddr
,
1616 const unsigned char *myaddr
, int len
)
1618 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 1, 0) != len
;
1621 /* Send an interrupt request to the inferior process. */
1623 win32_process_target::request_interrupt ()
1625 winapi_DebugBreakProcess DebugBreakProcess
;
1626 winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent
;
1629 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
1631 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
1634 GenerateConsoleCtrlEvent
= GETPROCADDRESS (dll
, GenerateConsoleCtrlEvent
);
1636 if (GenerateConsoleCtrlEvent
!= NULL
1637 && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT
, current_process_id
))
1640 /* GenerateConsoleCtrlEvent can fail if process id being debugged is
1641 not a process group id.
1642 Fallback to XP/Vista 'DebugBreakProcess', which generates a
1643 breakpoint exception in the interior process. */
1645 DebugBreakProcess
= GETPROCADDRESS (dll
, DebugBreakProcess
);
1647 if (DebugBreakProcess
!= NULL
1648 && DebugBreakProcess (current_process_handle
))
1651 /* Last resort, suspend all threads manually. */
1652 soft_interrupt_requested
= 1;
1656 win32_process_target::supports_hardware_single_step ()
1663 win32_error_to_fileio_error (DWORD err
)
1667 case ERROR_BAD_PATHNAME
:
1668 case ERROR_FILE_NOT_FOUND
:
1669 case ERROR_INVALID_NAME
:
1670 case ERROR_PATH_NOT_FOUND
:
1671 return FILEIO_ENOENT
;
1673 case ERROR_IO_DEVICE
:
1674 case ERROR_OPEN_FAILED
:
1676 case ERROR_INVALID_HANDLE
:
1677 return FILEIO_EBADF
;
1678 case ERROR_ACCESS_DENIED
:
1679 case ERROR_SHARING_VIOLATION
:
1680 return FILEIO_EACCES
;
1681 case ERROR_NOACCESS
:
1682 return FILEIO_EFAULT
;
1684 return FILEIO_EBUSY
;
1685 case ERROR_ALREADY_EXISTS
:
1686 case ERROR_FILE_EXISTS
:
1687 return FILEIO_EEXIST
;
1688 case ERROR_BAD_DEVICE
:
1689 return FILEIO_ENODEV
;
1690 case ERROR_DIRECTORY
:
1691 return FILEIO_ENOTDIR
;
1692 case ERROR_FILENAME_EXCED_RANGE
:
1693 case ERROR_INVALID_DATA
:
1694 case ERROR_INVALID_PARAMETER
:
1695 case ERROR_NEGATIVE_SEEK
:
1696 return FILEIO_EINVAL
;
1697 case ERROR_TOO_MANY_OPEN_FILES
:
1698 return FILEIO_EMFILE
;
1699 case ERROR_HANDLE_DISK_FULL
:
1700 case ERROR_DISK_FULL
:
1701 return FILEIO_ENOSPC
;
1702 case ERROR_WRITE_PROTECT
:
1703 return FILEIO_EROFS
;
1704 case ERROR_NOT_SUPPORTED
:
1705 return FILEIO_ENOSYS
;
1708 return FILEIO_EUNKNOWN
;
1712 win32_process_target::hostio_last_error (char *buf
)
1714 DWORD winerr
= GetLastError ();
1715 int fileio_err
= win32_error_to_fileio_error (winerr
);
1716 sprintf (buf
, "F-1,%x", fileio_err
);
1721 win32_process_target::supports_qxfer_siginfo ()
1726 /* Write Windows signal info. */
1729 win32_process_target::qxfer_siginfo (const char *annex
,
1730 unsigned char *readbuf
,
1731 unsigned const char *writebuf
,
1732 CORE_ADDR offset
, int len
)
1734 if (siginfo_er
.ExceptionCode
== 0)
1737 if (readbuf
== nullptr)
1740 if (offset
> sizeof (siginfo_er
))
1743 if (offset
+ len
> sizeof (siginfo_er
))
1744 len
= sizeof (siginfo_er
) - offset
;
1746 memcpy (readbuf
, (char *) &siginfo_er
+ offset
, len
);
1752 win32_process_target::supports_get_tib_address ()
1757 /* Write Windows OS Thread Information Block address. */
1760 win32_process_target::get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1762 windows_thread_info
*th
;
1763 th
= thread_rec (ptid
, DONT_INVALIDATE_CONTEXT
);
1767 *addr
= th
->thread_local_base
;
1771 /* Implementation of the target_ops method "sw_breakpoint_from_kind". */
1774 win32_process_target::sw_breakpoint_from_kind (int kind
, int *size
)
1776 *size
= the_low_target
.breakpoint_len
;
1777 return the_low_target
.breakpoint
;
1780 /* The win32 target ops object. */
1782 static win32_process_target the_win32_target
;
1784 /* Initialize the Win32 backend. */
1786 initialize_low (void)
1788 set_target_ops (&the_win32_target
);
1789 the_low_target
.arch_setup ();