1 /* Low level interface to Windows debugging, for gdbserver.
2 Copyright (C) 2006-2015 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"
37 #include <sys/cygwin.h>
40 #define OUTMSG(X) do { printf X; fflush (stderr); } while (0)
53 #define _T(x) TEXT (x)
57 #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
61 # define GETPROCADDRESS(DLL, PROC) \
62 ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC)))
64 # define GETPROCADDRESS(DLL, PROC) \
65 ((winapi_ ## PROC) GetProcAddress (DLL, #PROC))
68 int using_threads
= 1;
71 static int attaching
= 0;
72 static HANDLE current_process_handle
= NULL
;
73 static DWORD current_process_id
= 0;
74 static DWORD main_thread_id
= 0;
75 static enum gdb_signal last_sig
= GDB_SIGNAL_0
;
77 /* The current debug event from WaitForDebugEvent. */
78 static DEBUG_EVENT current_event
;
80 /* A status that hasn't been reported to the core yet, and so
81 win32_wait should return it next, instead of fetching the next
82 debug event off the win32 API. */
83 static struct target_waitstatus cached_status
;
85 /* Non zero if an interrupt request is to be satisfied by suspending
87 static int soft_interrupt_requested
= 0;
89 /* Non zero if the inferior is stopped in a simulated breakpoint done
90 by suspending all the threads. */
91 static int faked_breakpoint
= 0;
93 const struct target_desc
*win32_tdesc
;
95 #define NUM_REGS (the_low_target.num_regs)
97 typedef BOOL (WINAPI
*winapi_DebugActiveProcessStop
) (DWORD dwProcessId
);
98 typedef BOOL (WINAPI
*winapi_DebugSetProcessKillOnExit
) (BOOL KillOnExit
);
99 typedef BOOL (WINAPI
*winapi_DebugBreakProcess
) (HANDLE
);
100 typedef BOOL (WINAPI
*winapi_GenerateConsoleCtrlEvent
) (DWORD
, DWORD
);
102 static ptid_t
win32_wait (ptid_t ptid
, struct target_waitstatus
*ourstatus
,
104 static void win32_resume (struct thread_resume
*resume_info
, size_t n
);
106 static void win32_add_all_dlls (void);
109 /* Get the thread ID from the current selected inferior (the current
112 current_thread_ptid (void)
117 /* The current debug event from WaitForDebugEvent. */
119 debug_event_ptid (DEBUG_EVENT
*event
)
121 return ptid_build (event
->dwProcessId
, event
->dwThreadId
, 0);
124 /* Get the thread context of the thread associated with TH. */
127 win32_get_thread_context (win32_thread_info
*th
)
129 memset (&th
->context
, 0, sizeof (CONTEXT
));
130 (*the_low_target
.get_thread_context
) (th
);
132 memcpy (&th
->base_context
, &th
->context
, sizeof (CONTEXT
));
136 /* Set the thread context of the thread associated with TH. */
139 win32_set_thread_context (win32_thread_info
*th
)
142 /* Calling SuspendThread on a thread that is running kernel code
143 will report that the suspending was successful, but in fact, that
144 will often not be true. In those cases, the context returned by
145 GetThreadContext will not be correct by the time the thread
146 stops, hence we can't set that context back into the thread when
147 resuming - it will most likelly crash the inferior.
148 Unfortunately, there is no way to know when the thread will
149 really stop. To work around it, we'll only write the context
150 back to the thread when either the user or GDB explicitly change
151 it between stopping and resuming. */
152 if (memcmp (&th
->context
, &th
->base_context
, sizeof (CONTEXT
)) != 0)
154 SetThreadContext (th
->h
, &th
->context
);
157 /* Set the thread context of the thread associated with TH. */
160 win32_prepare_to_resume (win32_thread_info
*th
)
162 if (the_low_target
.prepare_to_resume
!= NULL
)
163 (*the_low_target
.prepare_to_resume
) (th
);
166 /* See win32-low.h. */
169 win32_require_context (win32_thread_info
*th
)
171 if (th
->context
.ContextFlags
== 0)
175 if (SuspendThread (th
->h
) == (DWORD
) -1)
177 DWORD err
= GetLastError ();
178 OUTMSG (("warning: SuspendThread failed in thread_rec, "
179 "(error %d): %s\n", (int) err
, strwinerror (err
)));
185 win32_get_thread_context (th
);
189 /* Find a thread record given a thread id. If GET_CONTEXT is set then
190 also retrieve the context for this thread. */
191 static win32_thread_info
*
192 thread_rec (ptid_t ptid
, int get_context
)
194 struct thread_info
*thread
;
195 win32_thread_info
*th
;
197 thread
= (struct thread_info
*) find_inferior_id (&all_threads
, ptid
);
201 th
= (win32_thread_info
*) inferior_target_data (thread
);
203 win32_require_context (th
);
207 /* Add a thread to the thread list. */
208 static win32_thread_info
*
209 child_add_thread (DWORD pid
, DWORD tid
, HANDLE h
, void *tlb
)
211 win32_thread_info
*th
;
212 ptid_t ptid
= ptid_build (pid
, tid
, 0);
214 if ((th
= thread_rec (ptid
, FALSE
)))
217 th
= XCNEW (win32_thread_info
);
220 th
->thread_local_base
= (CORE_ADDR
) (uintptr_t) tlb
;
222 add_thread (ptid
, th
);
224 if (the_low_target
.thread_added
!= NULL
)
225 (*the_low_target
.thread_added
) (th
);
230 /* Delete a thread from the list of threads. */
232 delete_thread_info (struct inferior_list_entry
*entry
)
234 struct thread_info
*thread
= (struct thread_info
*) entry
;
235 win32_thread_info
*th
= (win32_thread_info
*) inferior_target_data (thread
);
237 remove_thread (thread
);
242 /* Delete a thread from the list of threads. */
244 child_delete_thread (DWORD pid
, DWORD tid
)
246 struct inferior_list_entry
*thread
;
249 /* If the last thread is exiting, just return. */
250 if (one_inferior_p (&all_threads
))
253 ptid
= ptid_build (pid
, tid
, 0);
254 thread
= find_inferior_id (&all_threads
, ptid
);
258 delete_thread_info (thread
);
261 /* These watchpoint related wrapper functions simply pass on the function call
262 if the low target has registered a corresponding function. */
265 win32_supports_z_point_type (char z_type
)
267 return (the_low_target
.supports_z_point_type
!= NULL
268 && the_low_target
.supports_z_point_type (z_type
));
272 win32_insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
273 int size
, struct raw_breakpoint
*bp
)
275 if (the_low_target
.insert_point
!= NULL
)
276 return the_low_target
.insert_point (type
, addr
, size
, bp
);
278 /* Unsupported (see target.h). */
283 win32_remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
284 int size
, struct raw_breakpoint
*bp
)
286 if (the_low_target
.remove_point
!= NULL
)
287 return the_low_target
.remove_point (type
, addr
, size
, bp
);
289 /* Unsupported (see target.h). */
294 win32_stopped_by_watchpoint (void)
296 if (the_low_target
.stopped_by_watchpoint
!= NULL
)
297 return the_low_target
.stopped_by_watchpoint ();
303 win32_stopped_data_address (void)
305 if (the_low_target
.stopped_data_address
!= NULL
)
306 return the_low_target
.stopped_data_address ();
312 /* Transfer memory from/to the debugged process. */
314 child_xfer_memory (CORE_ADDR memaddr
, char *our
, int len
,
315 int write
, struct target_ops
*target
)
320 uintptr_t addr
= (uintptr_t) memaddr
;
324 success
= WriteProcessMemory (current_process_handle
, (LPVOID
) addr
,
325 (LPCVOID
) our
, len
, &done
);
327 lasterror
= GetLastError ();
328 FlushInstructionCache (current_process_handle
, (LPCVOID
) addr
, len
);
332 success
= ReadProcessMemory (current_process_handle
, (LPCVOID
) addr
,
333 (LPVOID
) our
, len
, &done
);
335 lasterror
= GetLastError ();
337 if (!success
&& lasterror
== ERROR_PARTIAL_COPY
&& done
> 0)
340 return success
? done
: -1;
343 /* Clear out any old thread list and reinitialize it to a pristine
346 child_init_thread_list (void)
348 for_each_inferior (&all_threads
, delete_thread_info
);
351 /* Zero during the child initialization phase, and nonzero otherwise. */
353 static int child_initialization_done
= 0;
356 do_initial_child_stuff (HANDLE proch
, DWORD pid
, int attached
)
358 struct process_info
*proc
;
360 last_sig
= GDB_SIGNAL_0
;
362 current_process_handle
= proch
;
363 current_process_id
= pid
;
366 soft_interrupt_requested
= 0;
367 faked_breakpoint
= 0;
369 memset (¤t_event
, 0, sizeof (current_event
));
371 proc
= add_process (pid
, attached
);
372 proc
->tdesc
= win32_tdesc
;
373 child_init_thread_list ();
374 child_initialization_done
= 0;
376 if (the_low_target
.initial_stuff
!= NULL
)
377 (*the_low_target
.initial_stuff
) ();
379 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
381 /* Flush all currently pending debug events (thread and dll list) up
382 to the initial breakpoint. */
385 struct target_waitstatus status
;
387 win32_wait (minus_one_ptid
, &status
, 0);
389 /* Note win32_wait doesn't return thread events. */
390 if (status
.kind
!= TARGET_WAITKIND_LOADED
)
392 cached_status
= status
;
397 struct thread_resume resume
;
399 resume
.thread
= minus_one_ptid
;
400 resume
.kind
= resume_continue
;
403 win32_resume (&resume
, 1);
408 /* Now that the inferior has been started and all DLLs have been mapped,
409 we can iterate over all DLLs and load them in.
411 We avoid doing it any earlier because, on certain versions of Windows,
412 LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
413 we have seen on Windows 8.1 that the ntdll.dll load event does not
414 include the DLL name, preventing us from creating an associated SO.
415 A possible explanation is that ntdll.dll might be mapped before
416 the SO info gets created by the Windows system -- ntdll.dll is
417 the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
418 do not seem to suffer from that problem.
420 Rather than try to work around this sort of issue, it is much
421 simpler to just ignore DLL load/unload events during the startup
422 phase, and then process them all in one batch now. */
423 win32_add_all_dlls ();
426 child_initialization_done
= 1;
429 /* Resume all artificially suspended threads if we are continuing
432 continue_one_thread (struct inferior_list_entry
*this_thread
, void *id_ptr
)
434 struct thread_info
*thread
= (struct thread_info
*) this_thread
;
435 int thread_id
= * (int *) id_ptr
;
436 win32_thread_info
*th
= (win32_thread_info
*) inferior_target_data (thread
);
438 if (thread_id
== -1 || thread_id
== th
->tid
)
440 win32_prepare_to_resume (th
);
444 if (th
->context
.ContextFlags
)
446 win32_set_thread_context (th
);
447 th
->context
.ContextFlags
= 0;
450 if (ResumeThread (th
->h
) == (DWORD
) -1)
452 DWORD err
= GetLastError ();
453 OUTMSG (("warning: ResumeThread failed in continue_one_thread, "
454 "(error %d): %s\n", (int) err
, strwinerror (err
)));
464 child_continue (DWORD continue_status
, int thread_id
)
466 /* The inferior will only continue after the ContinueDebugEvent
468 find_inferior (&all_threads
, continue_one_thread
, &thread_id
);
469 faked_breakpoint
= 0;
471 if (!ContinueDebugEvent (current_event
.dwProcessId
,
472 current_event
.dwThreadId
,
479 /* Fetch register(s) from the current thread context. */
481 child_fetch_inferior_registers (struct regcache
*regcache
, int r
)
484 win32_thread_info
*th
= thread_rec (current_thread_ptid (), TRUE
);
485 if (r
== -1 || r
> NUM_REGS
)
486 child_fetch_inferior_registers (regcache
, NUM_REGS
);
488 for (regno
= 0; regno
< r
; regno
++)
489 (*the_low_target
.fetch_inferior_register
) (regcache
, th
, regno
);
492 /* Store a new register value into the current thread context. We don't
493 change the program's context until later, when we resume it. */
495 child_store_inferior_registers (struct regcache
*regcache
, int r
)
498 win32_thread_info
*th
= thread_rec (current_thread_ptid (), TRUE
);
499 if (r
== -1 || r
== 0 || r
> NUM_REGS
)
500 child_store_inferior_registers (regcache
, NUM_REGS
);
502 for (regno
= 0; regno
< r
; regno
++)
503 (*the_low_target
.store_inferior_register
) (regcache
, th
, regno
);
506 /* Map the Windows error number in ERROR to a locale-dependent error
507 message string and return a pointer to it. Typically, the values
508 for ERROR come from GetLastError.
510 The string pointed to shall not be modified by the application,
511 but may be overwritten by a subsequent call to strwinerror
513 The strwinerror function does not change the current setting
517 strwinerror (DWORD error
)
519 static char buf
[1024];
521 DWORD lasterr
= GetLastError ();
522 DWORD chars
= FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
523 | FORMAT_MESSAGE_ALLOCATE_BUFFER
,
526 0, /* Default language */
532 /* If there is an \r\n appended, zap it. */
534 && msgbuf
[chars
- 2] == '\r'
535 && msgbuf
[chars
- 1] == '\n')
541 if (chars
> ((COUNTOF (buf
)) - 1))
543 chars
= COUNTOF (buf
) - 1;
548 wcstombs (buf
, msgbuf
, chars
+ 1);
550 strncpy (buf
, msgbuf
, chars
+ 1);
555 sprintf (buf
, "unknown win32 error (%u)", (unsigned) error
);
557 SetLastError (lasterr
);
562 create_process (const char *program
, char *args
,
563 DWORD flags
, PROCESS_INFORMATION
*pi
)
568 wchar_t *p
, *wprogram
, *wargs
;
571 wprogram
= alloca ((strlen (program
) + 1) * sizeof (wchar_t));
572 mbstowcs (wprogram
, program
, strlen (program
) + 1);
574 for (p
= wprogram
; *p
; ++p
)
578 argslen
= strlen (args
);
579 wargs
= alloca ((argslen
+ 1) * sizeof (wchar_t));
580 mbstowcs (wargs
, args
, argslen
+ 1);
582 ret
= CreateProcessW (wprogram
, /* image name */
583 wargs
, /* command line */
584 NULL
, /* security, not supported */
585 NULL
, /* thread, not supported */
586 FALSE
, /* inherit handles, not supported */
587 flags
, /* start flags */
588 NULL
, /* environment, not supported */
589 NULL
, /* current directory, not supported */
590 NULL
, /* start info, not supported */
593 STARTUPINFOA si
= { sizeof (STARTUPINFOA
) };
595 ret
= CreateProcessA (program
, /* image name */
596 args
, /* command line */
599 TRUE
, /* inherit handles */
600 flags
, /* start flags */
601 NULL
, /* environment */
602 NULL
, /* current directory */
603 &si
, /* start info */
610 /* Start a new process.
611 PROGRAM is a path to the program to execute.
612 ARGS is a standard NULL-terminated array of arguments,
613 to be passed to the inferior as ``argv''.
614 Returns the new PID on success, -1 on failure. Registers the new
615 process with the process list. */
617 win32_create_inferior (char *program
, char **program_args
)
620 char real_path
[PATH_MAX
];
621 char *orig_path
, *new_path
, *path_ptr
;
628 PROCESS_INFORMATION pi
;
631 /* win32_wait needs to know we're not attaching. */
635 error ("No executable specified, specify executable to debug.\n");
637 flags
= DEBUG_PROCESS
| DEBUG_ONLY_THIS_PROCESS
;
641 path_ptr
= getenv ("PATH");
644 int size
= cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, NULL
, 0);
645 orig_path
= alloca (strlen (path_ptr
) + 1);
646 new_path
= alloca (size
);
647 strcpy (orig_path
, path_ptr
);
648 cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, new_path
, size
);
649 setenv ("PATH", new_path
, 1);
651 cygwin_conv_path (CCP_POSIX_TO_WIN_A
, program
, real_path
, PATH_MAX
);
656 for (argc
= 1; program_args
[argc
]; argc
++)
657 argslen
+= strlen (program_args
[argc
]) + 1;
658 args
= (char *) alloca (argslen
);
660 for (argc
= 1; program_args
[argc
]; argc
++)
662 /* FIXME: Can we do better about quoting? How does Cygwin
665 strcat (args
, program_args
[argc
]);
667 OUTMSG2 (("Command line is \"%s\"\n", args
));
669 #ifdef CREATE_NEW_PROCESS_GROUP
670 flags
|= CREATE_NEW_PROCESS_GROUP
;
673 ret
= create_process (program
, args
, flags
, &pi
);
674 err
= GetLastError ();
675 if (!ret
&& err
== ERROR_FILE_NOT_FOUND
)
677 char *exename
= (char *) alloca (strlen (program
) + 5);
678 strcat (strcpy (exename
, program
), ".exe");
679 ret
= create_process (exename
, args
, flags
, &pi
);
680 err
= GetLastError ();
685 setenv ("PATH", orig_path
, 1);
690 error ("Error creating process \"%s%s\", (error %d): %s\n",
691 program
, args
, (int) err
, strwinerror (err
));
695 OUTMSG2 (("Process created: %s\n", (char *) args
));
699 /* On Windows CE this handle can't be closed. The OS reuses
700 it in the debug events, while the 9x/NT versions of Windows
701 probably use a DuplicateHandle'd one. */
702 CloseHandle (pi
.hThread
);
705 do_initial_child_stuff (pi
.hProcess
, pi
.dwProcessId
, 0);
707 return current_process_id
;
710 /* Attach to a running process.
711 PID is the process ID to attach to, specified by the user
712 or a higher layer. */
714 win32_attach (unsigned long pid
)
717 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
720 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
722 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
724 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
726 h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
729 if (DebugActiveProcess (pid
))
731 if (DebugSetProcessKillOnExit
!= NULL
)
732 DebugSetProcessKillOnExit (FALSE
);
734 /* win32_wait needs to know we're attaching. */
736 do_initial_child_stuff (h
, pid
, 1);
743 err
= GetLastError ();
744 error ("Attach to process failed (error %d): %s\n",
745 (int) err
, strwinerror (err
));
748 /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */
750 handle_output_debug_string (void)
752 #define READ_BUFFER_LEN 1024
754 char s
[READ_BUFFER_LEN
+ 1] = { 0 };
755 DWORD nbytes
= current_event
.u
.DebugString
.nDebugStringLength
;
760 if (nbytes
> READ_BUFFER_LEN
)
761 nbytes
= READ_BUFFER_LEN
;
763 addr
= (CORE_ADDR
) (size_t) current_event
.u
.DebugString
.lpDebugStringData
;
765 if (current_event
.u
.DebugString
.fUnicode
)
767 /* The event tells us how many bytes, not chars, even
769 WCHAR buffer
[(READ_BUFFER_LEN
+ 1) / sizeof (WCHAR
)] = { 0 };
770 if (read_inferior_memory (addr
, (unsigned char *) buffer
, nbytes
) != 0)
772 wcstombs (s
, buffer
, (nbytes
+ 1) / sizeof (WCHAR
));
776 if (read_inferior_memory (addr
, (unsigned char *) s
, nbytes
) != 0)
780 if (!startswith (s
, "cYg"))
790 #undef READ_BUFFER_LEN
794 win32_clear_inferiors (void)
796 if (current_process_handle
!= NULL
)
797 CloseHandle (current_process_handle
);
799 for_each_inferior (&all_threads
, delete_thread_info
);
803 /* Kill all inferiors. */
807 struct process_info
*process
;
809 if (current_process_handle
== NULL
)
812 TerminateProcess (current_process_handle
, 0);
815 if (!child_continue (DBG_CONTINUE
, -1))
817 if (!WaitForDebugEvent (¤t_event
, INFINITE
))
819 if (current_event
.dwDebugEventCode
== EXIT_PROCESS_DEBUG_EVENT
)
821 else if (current_event
.dwDebugEventCode
== OUTPUT_DEBUG_STRING_EVENT
)
822 handle_output_debug_string ();
825 win32_clear_inferiors ();
827 process
= find_process_pid (pid
);
828 remove_process (process
);
832 /* Detach from inferior PID. */
834 win32_detach (int pid
)
836 struct process_info
*process
;
837 winapi_DebugActiveProcessStop DebugActiveProcessStop
= NULL
;
838 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
840 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
842 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
844 DebugActiveProcessStop
= GETPROCADDRESS (dll
, DebugActiveProcessStop
);
845 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
847 if (DebugSetProcessKillOnExit
== NULL
848 || DebugActiveProcessStop
== NULL
)
852 struct thread_resume resume
;
853 resume
.thread
= minus_one_ptid
;
854 resume
.kind
= resume_continue
;
856 win32_resume (&resume
, 1);
859 if (!DebugActiveProcessStop (current_process_id
))
862 DebugSetProcessKillOnExit (FALSE
);
863 process
= find_process_pid (pid
);
864 remove_process (process
);
866 win32_clear_inferiors ();
871 win32_mourn (struct process_info
*process
)
873 remove_process (process
);
876 /* Wait for inferiors to end. */
880 HANDLE h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
883 WaitForSingleObject (h
, INFINITE
);
888 /* Return 1 iff the thread with thread ID TID is alive. */
890 win32_thread_alive (ptid_t ptid
)
894 /* Our thread list is reliable; don't bother to poll target
896 if (find_inferior_id (&all_threads
, ptid
) != NULL
)
903 /* Resume the inferior process. RESUME_INFO describes how we want
906 win32_resume (struct thread_resume
*resume_info
, size_t n
)
911 win32_thread_info
*th
;
912 DWORD continue_status
= DBG_CONTINUE
;
915 /* This handles the very limited set of resume packets that GDB can
916 currently produce. */
918 if (n
== 1 && ptid_equal (resume_info
[0].thread
, minus_one_ptid
))
923 /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make
924 the Windows resume code do the right thing for thread switching. */
925 tid
= current_event
.dwThreadId
;
927 if (!ptid_equal (resume_info
[0].thread
, minus_one_ptid
))
929 sig
= resume_info
[0].sig
;
930 step
= resume_info
[0].kind
== resume_step
;
938 if (sig
!= GDB_SIGNAL_0
)
940 if (current_event
.dwDebugEventCode
!= EXCEPTION_DEBUG_EVENT
)
942 OUTMSG (("Cannot continue with signal %d here.\n", sig
));
944 else if (sig
== last_sig
)
945 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
947 OUTMSG (("Can only continue with recieved signal %d.\n", last_sig
));
950 last_sig
= GDB_SIGNAL_0
;
952 /* Get context for the currently selected thread. */
953 ptid
= debug_event_ptid (¤t_event
);
954 th
= thread_rec (ptid
, FALSE
);
957 win32_prepare_to_resume (th
);
959 if (th
->context
.ContextFlags
)
961 /* Move register values from the inferior into the thread
962 context structure. */
963 regcache_invalidate ();
967 if (the_low_target
.single_step
!= NULL
)
968 (*the_low_target
.single_step
) (th
);
970 error ("Single stepping is not supported "
971 "in this configuration.\n");
974 win32_set_thread_context (th
);
975 th
->context
.ContextFlags
= 0;
979 /* Allow continuing with the same signal that interrupted us.
980 Otherwise complain. */
982 child_continue (continue_status
, tid
);
986 win32_add_one_solib (const char *name
, CORE_ADDR load_addr
)
988 char buf
[MAX_PATH
+ 1];
989 char buf2
[MAX_PATH
+ 1];
992 WIN32_FIND_DATA w32_fd
;
993 WCHAR wname
[MAX_PATH
+ 1];
994 mbstowcs (wname
, name
, MAX_PATH
);
995 HANDLE h
= FindFirstFile (wname
, &w32_fd
);
997 WIN32_FIND_DATAA w32_fd
;
998 HANDLE h
= FindFirstFileA (name
, &w32_fd
);
1001 /* The symbols in a dll are offset by 0x1000, which is the
1002 offset from 0 of the first byte in an image - because
1003 of the file header and the section alignment. */
1004 load_addr
+= 0x1000;
1006 if (h
== INVALID_HANDLE_VALUE
)
1014 char cwd
[MAX_PATH
+ 1];
1016 if (GetCurrentDirectoryA (MAX_PATH
+ 1, cwd
))
1018 p
= strrchr (buf
, '\\');
1021 SetCurrentDirectoryA (buf
);
1022 GetFullPathNameA (w32_fd
.cFileName
, MAX_PATH
, buf
, &p
);
1023 SetCurrentDirectoryA (cwd
);
1030 if (strcasecmp (buf
, "ntdll.dll") == 0)
1032 GetSystemDirectoryA (buf
, sizeof (buf
));
1033 strcat (buf
, "\\ntdll.dll");
1038 cygwin_conv_path (CCP_WIN_A_TO_POSIX
, buf
, buf2
, sizeof (buf2
));
1043 loaded_dll (buf2
, load_addr
);
1047 get_image_name (HANDLE h
, void *address
, int unicode
)
1049 static char buf
[(2 * MAX_PATH
) + 1];
1050 DWORD size
= unicode
? sizeof (WCHAR
) : sizeof (char);
1056 /* Attempt to read the name of the dll that was detected.
1057 This is documented to work only when actively debugging
1058 a program. It will not work for attached processes. */
1059 if (address
== NULL
)
1063 /* Windows CE reports the address of the image name,
1064 instead of an address of a pointer into the image name. */
1065 address_ptr
= address
;
1067 /* See if we could read the address of a string, and that the
1068 address isn't null. */
1069 if (!ReadProcessMemory (h
, address
, &address_ptr
,
1070 sizeof (address_ptr
), &done
)
1071 || done
!= sizeof (address_ptr
)
1076 /* Find the length of the string */
1077 while (ReadProcessMemory (h
, address_ptr
+ len
++ * size
, &b
, size
, &done
)
1078 && (b
[0] != 0 || b
[size
- 1] != 0) && done
== size
)
1082 ReadProcessMemory (h
, address_ptr
, buf
, len
, &done
);
1085 WCHAR
*unicode_address
= XALLOCAVEC (WCHAR
, len
);
1086 ReadProcessMemory (h
, address_ptr
, unicode_address
, len
* sizeof (WCHAR
),
1089 WideCharToMultiByte (CP_ACP
, 0, unicode_address
, len
, buf
, len
, 0, 0);
1095 typedef BOOL (WINAPI
*winapi_EnumProcessModules
) (HANDLE
, HMODULE
*,
1097 typedef BOOL (WINAPI
*winapi_GetModuleInformation
) (HANDLE
, HMODULE
,
1098 LPMODULEINFO
, DWORD
);
1099 typedef DWORD (WINAPI
*winapi_GetModuleFileNameExA
) (HANDLE
, HMODULE
,
1102 static winapi_EnumProcessModules win32_EnumProcessModules
;
1103 static winapi_GetModuleInformation win32_GetModuleInformation
;
1104 static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA
;
1109 static int psapi_loaded
= 0;
1110 static HMODULE dll
= NULL
;
1115 dll
= LoadLibrary (TEXT("psapi.dll"));
1118 win32_EnumProcessModules
=
1119 GETPROCADDRESS (dll
, EnumProcessModules
);
1120 win32_GetModuleInformation
=
1121 GETPROCADDRESS (dll
, GetModuleInformation
);
1122 win32_GetModuleFileNameExA
=
1123 GETPROCADDRESS (dll
, GetModuleFileNameExA
);
1126 return (win32_EnumProcessModules
!= NULL
1127 && win32_GetModuleInformation
!= NULL
1128 && win32_GetModuleFileNameExA
!= NULL
);
1133 /* Iterate over all DLLs currently mapped by our inferior, and
1134 add them to our list of solibs. */
1137 win32_add_all_dlls (void)
1141 HMODULE
*DllHandle
= dh_buf
;
1149 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1154 if (!ok
|| !cbNeeded
)
1157 DllHandle
= (HMODULE
*) alloca (cbNeeded
);
1161 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1168 for (i
= 1; i
< ((size_t) cbNeeded
/ sizeof (HMODULE
)); i
++)
1171 char dll_name
[MAX_PATH
];
1173 if (!(*win32_GetModuleInformation
) (current_process_handle
,
1178 if ((*win32_GetModuleFileNameExA
) (current_process_handle
,
1183 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) mi
.lpBaseOfDll
);
1188 typedef HANDLE (WINAPI
*winapi_CreateToolhelp32Snapshot
) (DWORD
, DWORD
);
1189 typedef BOOL (WINAPI
*winapi_Module32First
) (HANDLE
, LPMODULEENTRY32
);
1190 typedef BOOL (WINAPI
*winapi_Module32Next
) (HANDLE
, LPMODULEENTRY32
);
1192 /* Handle a DLL load event.
1194 This function assumes that this event did not occur during inferior
1195 initialization, where their event info may be incomplete (see
1196 do_initial_child_stuff and win32_add_all_dlls for more info on
1197 how we handle DLL loading during that phase). */
1200 handle_load_dll (void)
1202 LOAD_DLL_DEBUG_INFO
*event
= ¤t_event
.u
.LoadDll
;
1205 dll_name
= get_image_name (current_process_handle
,
1206 event
->lpImageName
, event
->fUnicode
);
1210 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) event
->lpBaseOfDll
);
1213 /* Handle a DLL unload event.
1215 This function assumes that this event did not occur during inferior
1216 initialization, where their event info may be incomplete (see
1217 do_initial_child_stuff and win32_add_one_solib for more info
1218 on how we handle DLL loading during that phase). */
1221 handle_unload_dll (void)
1223 CORE_ADDR load_addr
=
1224 (CORE_ADDR
) (uintptr_t) current_event
.u
.UnloadDll
.lpBaseOfDll
;
1226 /* The symbols in a dll are offset by 0x1000, which is the
1227 offset from 0 of the first byte in an image - because
1228 of the file header and the section alignment. */
1229 load_addr
+= 0x1000;
1230 unloaded_dll (NULL
, load_addr
);
1234 handle_exception (struct target_waitstatus
*ourstatus
)
1236 DWORD code
= current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
;
1238 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1242 case EXCEPTION_ACCESS_VIOLATION
:
1243 OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION"));
1244 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1246 case STATUS_STACK_OVERFLOW
:
1247 OUTMSG2 (("STATUS_STACK_OVERFLOW"));
1248 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1250 case STATUS_FLOAT_DENORMAL_OPERAND
:
1251 OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND"));
1252 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1254 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED
:
1255 OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"));
1256 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1258 case STATUS_FLOAT_INEXACT_RESULT
:
1259 OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT"));
1260 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1262 case STATUS_FLOAT_INVALID_OPERATION
:
1263 OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION"));
1264 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1266 case STATUS_FLOAT_OVERFLOW
:
1267 OUTMSG2 (("STATUS_FLOAT_OVERFLOW"));
1268 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1270 case STATUS_FLOAT_STACK_CHECK
:
1271 OUTMSG2 (("STATUS_FLOAT_STACK_CHECK"));
1272 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1274 case STATUS_FLOAT_UNDERFLOW
:
1275 OUTMSG2 (("STATUS_FLOAT_UNDERFLOW"));
1276 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1278 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1279 OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO"));
1280 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1282 case STATUS_INTEGER_DIVIDE_BY_ZERO
:
1283 OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO"));
1284 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1286 case STATUS_INTEGER_OVERFLOW
:
1287 OUTMSG2 (("STATUS_INTEGER_OVERFLOW"));
1288 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1290 case EXCEPTION_BREAKPOINT
:
1291 OUTMSG2 (("EXCEPTION_BREAKPOINT"));
1292 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1294 /* Remove the initial breakpoint. */
1295 check_breakpoints ((CORE_ADDR
) (long) current_event
1296 .u
.Exception
.ExceptionRecord
.ExceptionAddress
);
1300 OUTMSG2 (("DBG_CONTROL_C"));
1301 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1303 case DBG_CONTROL_BREAK
:
1304 OUTMSG2 (("DBG_CONTROL_BREAK"));
1305 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1307 case EXCEPTION_SINGLE_STEP
:
1308 OUTMSG2 (("EXCEPTION_SINGLE_STEP"));
1309 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1311 case EXCEPTION_ILLEGAL_INSTRUCTION
:
1312 OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION"));
1313 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1315 case EXCEPTION_PRIV_INSTRUCTION
:
1316 OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION"));
1317 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1319 case EXCEPTION_NONCONTINUABLE_EXCEPTION
:
1320 OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION"));
1321 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1324 if (current_event
.u
.Exception
.dwFirstChance
)
1326 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1329 OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s",
1330 (unsigned) current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
,
1331 phex_nz ((uintptr_t) current_event
.u
.Exception
.ExceptionRecord
.
1332 ExceptionAddress
, sizeof (uintptr_t))));
1333 ourstatus
->value
.sig
= GDB_SIGNAL_UNKNOWN
;
1337 last_sig
= ourstatus
->value
.sig
;
1342 suspend_one_thread (struct inferior_list_entry
*entry
)
1344 struct thread_info
*thread
= (struct thread_info
*) entry
;
1345 win32_thread_info
*th
= (win32_thread_info
*) inferior_target_data (thread
);
1349 if (SuspendThread (th
->h
) == (DWORD
) -1)
1351 DWORD err
= GetLastError ();
1352 OUTMSG (("warning: SuspendThread failed in suspend_one_thread, "
1353 "(error %d): %s\n", (int) err
, strwinerror (err
)));
1361 fake_breakpoint_event (void)
1363 OUTMSG2(("fake_breakpoint_event\n"));
1365 faked_breakpoint
= 1;
1367 memset (¤t_event
, 0, sizeof (current_event
));
1368 current_event
.dwThreadId
= main_thread_id
;
1369 current_event
.dwDebugEventCode
= EXCEPTION_DEBUG_EVENT
;
1370 current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
1371 = EXCEPTION_BREAKPOINT
;
1373 for_each_inferior (&all_threads
, suspend_one_thread
);
1378 auto_delete_breakpoint (CORE_ADDR stop_pc
)
1384 /* Get the next event from the child. */
1387 get_child_debug_event (struct target_waitstatus
*ourstatus
)
1391 last_sig
= GDB_SIGNAL_0
;
1392 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1394 /* Check if GDB sent us an interrupt request. */
1395 check_remote_input_interrupt_request ();
1397 if (soft_interrupt_requested
)
1399 soft_interrupt_requested
= 0;
1400 fake_breakpoint_event ();
1409 /* WinCE doesn't set an initial breakpoint automatically. To
1410 stop the inferior, we flush all currently pending debug
1411 events -- the thread list and the dll list are always
1412 reported immediatelly without delay, then, we suspend all
1413 threads and pretend we saw a trap at the current PC of the
1416 Contrary to desktop Windows, Windows CE *does* report the dll
1417 names on LOAD_DLL_DEBUG_EVENTs resulting from a
1418 DebugActiveProcess call. This limits the way we can detect
1419 if all the dlls have already been reported. If we get a real
1420 debug event before leaving attaching, the worst that will
1421 happen is the user will see a spurious breakpoint. */
1423 current_event
.dwDebugEventCode
= 0;
1424 if (!WaitForDebugEvent (¤t_event
, 0))
1426 OUTMSG2(("no attach events left\n"));
1427 fake_breakpoint_event ();
1431 OUTMSG2(("got attach event\n"));
1436 /* Keep the wait time low enough for confortable remote
1437 interruption, but high enough so gdbserver doesn't become a
1439 if (!WaitForDebugEvent (¤t_event
, 250))
1441 DWORD e
= GetLastError();
1443 if (e
== ERROR_PIPE_NOT_CONNECTED
)
1445 /* This will happen if the loader fails to succesfully
1446 load the application, e.g., if the main executable
1447 tries to pull in a non-existing export from a
1449 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1450 ourstatus
->value
.integer
= 1;
1460 switch (current_event
.dwDebugEventCode
)
1462 case CREATE_THREAD_DEBUG_EVENT
:
1463 OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT "
1464 "for pid=%u tid=%x)\n",
1465 (unsigned) current_event
.dwProcessId
,
1466 (unsigned) current_event
.dwThreadId
));
1468 /* Record the existence of this thread. */
1469 child_add_thread (current_event
.dwProcessId
,
1470 current_event
.dwThreadId
,
1471 current_event
.u
.CreateThread
.hThread
,
1472 current_event
.u
.CreateThread
.lpThreadLocalBase
);
1475 case EXIT_THREAD_DEBUG_EVENT
:
1476 OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT "
1477 "for pid=%u tid=%x\n",
1478 (unsigned) current_event
.dwProcessId
,
1479 (unsigned) current_event
.dwThreadId
));
1480 child_delete_thread (current_event
.dwProcessId
,
1481 current_event
.dwThreadId
);
1483 current_thread
= (struct thread_info
*) all_threads
.head
;
1486 case CREATE_PROCESS_DEBUG_EVENT
:
1487 OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT "
1488 "for pid=%u tid=%x\n",
1489 (unsigned) current_event
.dwProcessId
,
1490 (unsigned) current_event
.dwThreadId
));
1491 CloseHandle (current_event
.u
.CreateProcessInfo
.hFile
);
1493 current_process_handle
= current_event
.u
.CreateProcessInfo
.hProcess
;
1494 main_thread_id
= current_event
.dwThreadId
;
1496 ourstatus
->kind
= TARGET_WAITKIND_EXECD
;
1497 ourstatus
->value
.execd_pathname
= "Main executable";
1499 /* Add the main thread. */
1500 child_add_thread (current_event
.dwProcessId
,
1502 current_event
.u
.CreateProcessInfo
.hThread
,
1503 current_event
.u
.CreateProcessInfo
.lpThreadLocalBase
);
1505 ourstatus
->value
.related_pid
= debug_event_ptid (¤t_event
);
1509 /* Windows CE doesn't set the initial breakpoint
1510 automatically like the desktop versions of Windows do.
1511 We add it explicitly here. It will be removed as soon as
1513 set_breakpoint_at ((CORE_ADDR
) (long) current_event
.u
1514 .CreateProcessInfo
.lpStartAddress
,
1515 auto_delete_breakpoint
);
1520 case EXIT_PROCESS_DEBUG_EVENT
:
1521 OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT "
1522 "for pid=%u tid=%x\n",
1523 (unsigned) current_event
.dwProcessId
,
1524 (unsigned) current_event
.dwThreadId
));
1525 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1526 ourstatus
->value
.integer
= current_event
.u
.ExitProcess
.dwExitCode
;
1527 child_continue (DBG_CONTINUE
, -1);
1528 CloseHandle (current_process_handle
);
1529 current_process_handle
= NULL
;
1532 case LOAD_DLL_DEBUG_EVENT
:
1533 OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT "
1534 "for pid=%u tid=%x\n",
1535 (unsigned) current_event
.dwProcessId
,
1536 (unsigned) current_event
.dwThreadId
));
1537 CloseHandle (current_event
.u
.LoadDll
.hFile
);
1538 if (! child_initialization_done
)
1542 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1543 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1546 case UNLOAD_DLL_DEBUG_EVENT
:
1547 OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT "
1548 "for pid=%u tid=%x\n",
1549 (unsigned) current_event
.dwProcessId
,
1550 (unsigned) current_event
.dwThreadId
));
1551 if (! child_initialization_done
)
1553 handle_unload_dll ();
1554 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1555 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1558 case EXCEPTION_DEBUG_EVENT
:
1559 OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT "
1560 "for pid=%u tid=%x\n",
1561 (unsigned) current_event
.dwProcessId
,
1562 (unsigned) current_event
.dwThreadId
));
1563 handle_exception (ourstatus
);
1566 case OUTPUT_DEBUG_STRING_EVENT
:
1567 /* A message from the kernel (or Cygwin). */
1568 OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT "
1569 "for pid=%u tid=%x\n",
1570 (unsigned) current_event
.dwProcessId
,
1571 (unsigned) current_event
.dwThreadId
));
1572 handle_output_debug_string ();
1576 OUTMSG2 (("gdbserver: kernel event unknown "
1577 "for pid=%u tid=%x code=%x\n",
1578 (unsigned) current_event
.dwProcessId
,
1579 (unsigned) current_event
.dwThreadId
,
1580 (unsigned) current_event
.dwDebugEventCode
));
1584 ptid
= debug_event_ptid (¤t_event
);
1586 (struct thread_info
*) find_inferior_id (&all_threads
, ptid
);
1590 /* Wait for the inferior process to change state.
1591 STATUS will be filled in with a response code to send to GDB.
1592 Returns the signal which caused the process to stop. */
1594 win32_wait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
)
1596 struct regcache
*regcache
;
1598 if (cached_status
.kind
!= TARGET_WAITKIND_IGNORE
)
1600 /* The core always does a wait after creating the inferior, and
1601 do_initial_child_stuff already ran the inferior to the
1602 initial breakpoint (or an exit, if creating the process
1603 fails). Report it now. */
1604 *ourstatus
= cached_status
;
1605 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
1606 return debug_event_ptid (¤t_event
);
1611 if (!get_child_debug_event (ourstatus
))
1614 switch (ourstatus
->kind
)
1616 case TARGET_WAITKIND_EXITED
:
1617 OUTMSG2 (("Child exited with retcode = %x\n",
1618 ourstatus
->value
.integer
));
1619 win32_clear_inferiors ();
1620 return pid_to_ptid (current_event
.dwProcessId
);
1621 case TARGET_WAITKIND_STOPPED
:
1622 case TARGET_WAITKIND_LOADED
:
1623 OUTMSG2 (("Child Stopped with signal = %d \n",
1624 ourstatus
->value
.sig
));
1626 regcache
= get_thread_regcache (current_thread
, 1);
1627 child_fetch_inferior_registers (regcache
, -1);
1628 return debug_event_ptid (¤t_event
);
1630 OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus
->kind
));
1632 case TARGET_WAITKIND_SPURIOUS
:
1633 case TARGET_WAITKIND_EXECD
:
1634 /* do nothing, just continue */
1635 child_continue (DBG_CONTINUE
, -1);
1641 /* Fetch registers from the inferior process.
1642 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
1644 win32_fetch_inferior_registers (struct regcache
*regcache
, int regno
)
1646 child_fetch_inferior_registers (regcache
, regno
);
1649 /* Store registers to the inferior process.
1650 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
1652 win32_store_inferior_registers (struct regcache
*regcache
, int regno
)
1654 child_store_inferior_registers (regcache
, regno
);
1657 /* Read memory from the inferior process. This should generally be
1658 called through read_inferior_memory, which handles breakpoint shadowing.
1659 Read LEN bytes at MEMADDR into a buffer at MYADDR. */
1661 win32_read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
1663 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 0, 0) != len
;
1666 /* Write memory to the inferior process. This should generally be
1667 called through write_inferior_memory, which handles breakpoint shadowing.
1668 Write LEN bytes from the buffer at MYADDR to MEMADDR.
1669 Returns 0 on success and errno on failure. */
1671 win32_write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
1674 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 1, 0) != len
;
1677 /* Send an interrupt request to the inferior process. */
1679 win32_request_interrupt (void)
1681 winapi_DebugBreakProcess DebugBreakProcess
;
1682 winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent
;
1685 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
1687 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
1690 GenerateConsoleCtrlEvent
= GETPROCADDRESS (dll
, GenerateConsoleCtrlEvent
);
1692 if (GenerateConsoleCtrlEvent
!= NULL
1693 && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT
, current_process_id
))
1696 /* GenerateConsoleCtrlEvent can fail if process id being debugged is
1697 not a process group id.
1698 Fallback to XP/Vista 'DebugBreakProcess', which generates a
1699 breakpoint exception in the interior process. */
1701 DebugBreakProcess
= GETPROCADDRESS (dll
, DebugBreakProcess
);
1703 if (DebugBreakProcess
!= NULL
1704 && DebugBreakProcess (current_process_handle
))
1707 /* Last resort, suspend all threads manually. */
1708 soft_interrupt_requested
= 1;
1713 win32_error_to_fileio_error (DWORD err
)
1717 case ERROR_BAD_PATHNAME
:
1718 case ERROR_FILE_NOT_FOUND
:
1719 case ERROR_INVALID_NAME
:
1720 case ERROR_PATH_NOT_FOUND
:
1721 return FILEIO_ENOENT
;
1723 case ERROR_IO_DEVICE
:
1724 case ERROR_OPEN_FAILED
:
1726 case ERROR_INVALID_HANDLE
:
1727 return FILEIO_EBADF
;
1728 case ERROR_ACCESS_DENIED
:
1729 case ERROR_SHARING_VIOLATION
:
1730 return FILEIO_EACCES
;
1731 case ERROR_NOACCESS
:
1732 return FILEIO_EFAULT
;
1734 return FILEIO_EBUSY
;
1735 case ERROR_ALREADY_EXISTS
:
1736 case ERROR_FILE_EXISTS
:
1737 return FILEIO_EEXIST
;
1738 case ERROR_BAD_DEVICE
:
1739 return FILEIO_ENODEV
;
1740 case ERROR_DIRECTORY
:
1741 return FILEIO_ENOTDIR
;
1742 case ERROR_FILENAME_EXCED_RANGE
:
1743 case ERROR_INVALID_DATA
:
1744 case ERROR_INVALID_PARAMETER
:
1745 case ERROR_NEGATIVE_SEEK
:
1746 return FILEIO_EINVAL
;
1747 case ERROR_TOO_MANY_OPEN_FILES
:
1748 return FILEIO_EMFILE
;
1749 case ERROR_HANDLE_DISK_FULL
:
1750 case ERROR_DISK_FULL
:
1751 return FILEIO_ENOSPC
;
1752 case ERROR_WRITE_PROTECT
:
1753 return FILEIO_EROFS
;
1754 case ERROR_NOT_SUPPORTED
:
1755 return FILEIO_ENOSYS
;
1758 return FILEIO_EUNKNOWN
;
1762 wince_hostio_last_error (char *buf
)
1764 DWORD winerr
= GetLastError ();
1765 int fileio_err
= win32_error_to_fileio_error (winerr
);
1766 sprintf (buf
, "F-1,%x", fileio_err
);
1770 /* Write Windows OS Thread Information Block address. */
1773 win32_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1775 win32_thread_info
*th
;
1776 th
= thread_rec (ptid
, 0);
1780 *addr
= th
->thread_local_base
;
1784 /* Implementation of the target_ops method "sw_breakpoint_from_kind". */
1786 static const gdb_byte
*
1787 win32_sw_breakpoint_from_kind (int kind
, int *size
)
1789 *size
= the_low_target
.breakpoint_len
;
1790 return the_low_target
.breakpoint
;
1793 static struct target_ops win32_target_ops
= {
1794 win32_create_inferior
,
1795 NULL
, /* arch_setup */
1804 win32_fetch_inferior_registers
,
1805 win32_store_inferior_registers
,
1806 NULL
, /* prepare_to_access_memory */
1807 NULL
, /* done_accessing_memory */
1808 win32_read_inferior_memory
,
1809 win32_write_inferior_memory
,
1810 NULL
, /* lookup_symbols */
1811 win32_request_interrupt
,
1812 NULL
, /* read_auxv */
1813 win32_supports_z_point_type
,
1816 NULL
, /* stopped_by_sw_breakpoint */
1817 NULL
, /* supports_stopped_by_sw_breakpoint */
1818 NULL
, /* stopped_by_hw_breakpoint */
1819 NULL
, /* supports_stopped_by_hw_breakpoint */
1820 target_can_do_hardware_single_step
,
1821 win32_stopped_by_watchpoint
,
1822 win32_stopped_data_address
,
1823 NULL
, /* read_offsets */
1824 NULL
, /* get_tls_address */
1825 NULL
, /* qxfer_spu */
1827 wince_hostio_last_error
,
1829 hostio_last_error_from_errno
,
1831 NULL
, /* qxfer_osdata */
1832 NULL
, /* qxfer_siginfo */
1833 NULL
, /* supports_non_stop */
1835 NULL
, /* start_non_stop */
1836 NULL
, /* supports_multi_process */
1837 NULL
, /* supports_fork_events */
1838 NULL
, /* supports_vfork_events */
1839 NULL
, /* supports_exec_events */
1840 NULL
, /* handle_new_gdb_connection */
1841 NULL
, /* handle_monitor_command */
1842 NULL
, /* core_of_thread */
1843 NULL
, /* read_loadmap */
1844 NULL
, /* process_qsupported */
1845 NULL
, /* supports_tracepoints */
1847 NULL
, /* write_pc */
1848 NULL
, /* thread_stopped */
1849 win32_get_tib_address
,
1850 NULL
, /* pause_all */
1851 NULL
, /* unpause_all */
1852 NULL
, /* stabilize_threads */
1853 NULL
, /* install_fast_tracepoint_jump_pad */
1854 NULL
, /* emit_ops */
1855 NULL
, /* supports_disable_randomization */
1856 NULL
, /* get_min_fast_tracepoint_insn_len */
1857 NULL
, /* qxfer_libraries_svr4 */
1858 NULL
, /* support_agent */
1859 NULL
, /* support_btrace */
1860 NULL
, /* enable_btrace */
1861 NULL
, /* disable_btrace */
1862 NULL
, /* read_btrace */
1863 NULL
, /* read_btrace_conf */
1864 NULL
, /* supports_range_stepping */
1865 NULL
, /* pid_to_exec_file */
1866 NULL
, /* multifs_open */
1867 NULL
, /* multifs_unlink */
1868 NULL
, /* multifs_readlink */
1869 NULL
, /* breakpoint_kind_from_pc */
1870 win32_sw_breakpoint_from_kind
,
1873 /* Initialize the Win32 backend. */
1875 initialize_low (void)
1877 set_target_ops (&win32_target_ops
);
1878 the_low_target
.arch_setup ();