1 /* Low level interface to Windows debugging, for gdbserver.
2 Copyright (C) 2006-2017 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 "gdb_tilde_expand.h"
36 #include "common-inferior.h"
39 #include <sys/cygwin.h>
42 #define OUTMSG(X) do { printf X; fflush (stderr); } while (0)
55 #define _T(x) TEXT (x)
59 #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
63 # define GETPROCADDRESS(DLL, PROC) \
64 ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC)))
66 # define GETPROCADDRESS(DLL, PROC) \
67 ((winapi_ ## PROC) GetProcAddress (DLL, #PROC))
70 int using_threads
= 1;
73 static int attaching
= 0;
74 static HANDLE current_process_handle
= NULL
;
75 static DWORD current_process_id
= 0;
76 static DWORD main_thread_id
= 0;
77 static enum gdb_signal last_sig
= GDB_SIGNAL_0
;
79 /* The current debug event from WaitForDebugEvent. */
80 static DEBUG_EVENT current_event
;
82 /* A status that hasn't been reported to the core yet, and so
83 win32_wait should return it next, instead of fetching the next
84 debug event off the win32 API. */
85 static struct target_waitstatus cached_status
;
87 /* Non zero if an interrupt request is to be satisfied by suspending
89 static int soft_interrupt_requested
= 0;
91 /* Non zero if the inferior is stopped in a simulated breakpoint done
92 by suspending all the threads. */
93 static int faked_breakpoint
= 0;
95 const struct target_desc
*win32_tdesc
;
97 #define NUM_REGS (the_low_target.num_regs)
99 typedef BOOL (WINAPI
*winapi_DebugActiveProcessStop
) (DWORD dwProcessId
);
100 typedef BOOL (WINAPI
*winapi_DebugSetProcessKillOnExit
) (BOOL KillOnExit
);
101 typedef BOOL (WINAPI
*winapi_DebugBreakProcess
) (HANDLE
);
102 typedef BOOL (WINAPI
*winapi_GenerateConsoleCtrlEvent
) (DWORD
, DWORD
);
104 static ptid_t
win32_wait (ptid_t ptid
, struct target_waitstatus
*ourstatus
,
106 static void win32_resume (struct thread_resume
*resume_info
, size_t n
);
108 static void win32_add_all_dlls (void);
111 /* Get the thread ID from the current selected inferior (the current
114 current_thread_ptid (void)
119 /* The current debug event from WaitForDebugEvent. */
121 debug_event_ptid (DEBUG_EVENT
*event
)
123 return ptid_build (event
->dwProcessId
, event
->dwThreadId
, 0);
126 /* Get the thread context of the thread associated with TH. */
129 win32_get_thread_context (win32_thread_info
*th
)
131 memset (&th
->context
, 0, sizeof (CONTEXT
));
132 (*the_low_target
.get_thread_context
) (th
);
134 memcpy (&th
->base_context
, &th
->context
, sizeof (CONTEXT
));
138 /* Set the thread context of the thread associated with TH. */
141 win32_set_thread_context (win32_thread_info
*th
)
144 /* Calling SuspendThread on a thread that is running kernel code
145 will report that the suspending was successful, but in fact, that
146 will often not be true. In those cases, the context returned by
147 GetThreadContext will not be correct by the time the thread
148 stops, hence we can't set that context back into the thread when
149 resuming - it will most likelly crash the inferior.
150 Unfortunately, there is no way to know when the thread will
151 really stop. To work around it, we'll only write the context
152 back to the thread when either the user or GDB explicitly change
153 it between stopping and resuming. */
154 if (memcmp (&th
->context
, &th
->base_context
, sizeof (CONTEXT
)) != 0)
156 SetThreadContext (th
->h
, &th
->context
);
159 /* Set the thread context of the thread associated with TH. */
162 win32_prepare_to_resume (win32_thread_info
*th
)
164 if (the_low_target
.prepare_to_resume
!= NULL
)
165 (*the_low_target
.prepare_to_resume
) (th
);
168 /* See win32-low.h. */
171 win32_require_context (win32_thread_info
*th
)
173 if (th
->context
.ContextFlags
== 0)
177 if (SuspendThread (th
->h
) == (DWORD
) -1)
179 DWORD err
= GetLastError ();
180 OUTMSG (("warning: SuspendThread failed in thread_rec, "
181 "(error %d): %s\n", (int) err
, strwinerror (err
)));
187 win32_get_thread_context (th
);
191 /* Find a thread record given a thread id. If GET_CONTEXT is set then
192 also retrieve the context for this thread. */
193 static win32_thread_info
*
194 thread_rec (ptid_t ptid
, int get_context
)
196 thread_info
*thread
= find_thread_ptid (ptid
);
200 win32_thread_info
*th
= (win32_thread_info
*) thread_target_data (thread
);
202 win32_require_context (th
);
206 /* Add a thread to the thread list. */
207 static win32_thread_info
*
208 child_add_thread (DWORD pid
, DWORD tid
, HANDLE h
, void *tlb
)
210 win32_thread_info
*th
;
211 ptid_t ptid
= ptid_build (pid
, tid
, 0);
213 if ((th
= thread_rec (ptid
, FALSE
)))
216 th
= XCNEW (win32_thread_info
);
219 th
->thread_local_base
= (CORE_ADDR
) (uintptr_t) tlb
;
221 add_thread (ptid
, th
);
223 if (the_low_target
.thread_added
!= NULL
)
224 (*the_low_target
.thread_added
) (th
);
229 /* Delete a thread from the list of threads. */
231 delete_thread_info (thread_info
*thread
)
233 win32_thread_info
*th
= (win32_thread_info
*) thread_target_data (thread
);
235 remove_thread (thread
);
240 /* Delete a thread from the list of threads. */
242 child_delete_thread (DWORD pid
, DWORD tid
)
244 /* If the last thread is exiting, just return. */
245 if (all_threads
.size () == 1)
248 thread_info
*thread
= find_thread_ptid (ptid_t (pid
, tid
));
252 delete_thread_info (thread
);
255 /* These watchpoint related wrapper functions simply pass on the function call
256 if the low target has registered a corresponding function. */
259 win32_supports_z_point_type (char z_type
)
261 return (the_low_target
.supports_z_point_type
!= NULL
262 && the_low_target
.supports_z_point_type (z_type
));
266 win32_insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
267 int size
, struct raw_breakpoint
*bp
)
269 if (the_low_target
.insert_point
!= NULL
)
270 return the_low_target
.insert_point (type
, addr
, size
, bp
);
272 /* Unsupported (see target.h). */
277 win32_remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
278 int size
, struct raw_breakpoint
*bp
)
280 if (the_low_target
.remove_point
!= NULL
)
281 return the_low_target
.remove_point (type
, addr
, size
, bp
);
283 /* Unsupported (see target.h). */
288 win32_stopped_by_watchpoint (void)
290 if (the_low_target
.stopped_by_watchpoint
!= NULL
)
291 return the_low_target
.stopped_by_watchpoint ();
297 win32_stopped_data_address (void)
299 if (the_low_target
.stopped_data_address
!= NULL
)
300 return the_low_target
.stopped_data_address ();
306 /* Transfer memory from/to the debugged process. */
308 child_xfer_memory (CORE_ADDR memaddr
, char *our
, int len
,
309 int write
, struct target_ops
*target
)
314 uintptr_t addr
= (uintptr_t) memaddr
;
318 success
= WriteProcessMemory (current_process_handle
, (LPVOID
) addr
,
319 (LPCVOID
) our
, len
, &done
);
321 lasterror
= GetLastError ();
322 FlushInstructionCache (current_process_handle
, (LPCVOID
) addr
, len
);
326 success
= ReadProcessMemory (current_process_handle
, (LPCVOID
) addr
,
327 (LPVOID
) our
, len
, &done
);
329 lasterror
= GetLastError ();
331 if (!success
&& lasterror
== ERROR_PARTIAL_COPY
&& done
> 0)
334 return success
? done
: -1;
337 /* Clear out any old thread list and reinitialize it to a pristine
340 child_init_thread_list (void)
342 for_each_inferior (&all_threads
, delete_thread_info
);
345 /* Zero during the child initialization phase, and nonzero otherwise. */
347 static int child_initialization_done
= 0;
350 do_initial_child_stuff (HANDLE proch
, DWORD pid
, int attached
)
352 struct process_info
*proc
;
354 last_sig
= GDB_SIGNAL_0
;
356 current_process_handle
= proch
;
357 current_process_id
= pid
;
360 soft_interrupt_requested
= 0;
361 faked_breakpoint
= 0;
363 memset (¤t_event
, 0, sizeof (current_event
));
365 proc
= add_process (pid
, attached
);
366 proc
->tdesc
= win32_tdesc
;
367 child_init_thread_list ();
368 child_initialization_done
= 0;
370 if (the_low_target
.initial_stuff
!= NULL
)
371 (*the_low_target
.initial_stuff
) ();
373 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
375 /* Flush all currently pending debug events (thread and dll list) up
376 to the initial breakpoint. */
379 struct target_waitstatus status
;
381 win32_wait (minus_one_ptid
, &status
, 0);
383 /* Note win32_wait doesn't return thread events. */
384 if (status
.kind
!= TARGET_WAITKIND_LOADED
)
386 cached_status
= status
;
391 struct thread_resume resume
;
393 resume
.thread
= minus_one_ptid
;
394 resume
.kind
= resume_continue
;
397 win32_resume (&resume
, 1);
402 /* Now that the inferior has been started and all DLLs have been mapped,
403 we can iterate over all DLLs and load them in.
405 We avoid doing it any earlier because, on certain versions of Windows,
406 LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
407 we have seen on Windows 8.1 that the ntdll.dll load event does not
408 include the DLL name, preventing us from creating an associated SO.
409 A possible explanation is that ntdll.dll might be mapped before
410 the SO info gets created by the Windows system -- ntdll.dll is
411 the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
412 do not seem to suffer from that problem.
414 Rather than try to work around this sort of issue, it is much
415 simpler to just ignore DLL load/unload events during the startup
416 phase, and then process them all in one batch now. */
417 win32_add_all_dlls ();
420 child_initialization_done
= 1;
423 /* Resume all artificially suspended threads if we are continuing
426 continue_one_thread (thread_info
*thread
, int thread_id
)
428 win32_thread_info
*th
= (win32_thread_info
*) thread_target_data (thread
);
430 if (thread_id
== -1 || thread_id
== th
->tid
)
432 win32_prepare_to_resume (th
);
436 if (th
->context
.ContextFlags
)
438 win32_set_thread_context (th
);
439 th
->context
.ContextFlags
= 0;
442 if (ResumeThread (th
->h
) == (DWORD
) -1)
444 DWORD err
= GetLastError ();
445 OUTMSG (("warning: ResumeThread failed in continue_one_thread, "
446 "(error %d): %s\n", (int) err
, strwinerror (err
)));
454 child_continue (DWORD continue_status
, int thread_id
)
456 /* The inferior will only continue after the ContinueDebugEvent
458 for_each_thread ([&] (thread_info
*thread
)
460 continue_one_thread (thread
, thread_id
);
462 faked_breakpoint
= 0;
464 if (!ContinueDebugEvent (current_event
.dwProcessId
,
465 current_event
.dwThreadId
,
472 /* Fetch register(s) from the current thread context. */
474 child_fetch_inferior_registers (struct regcache
*regcache
, int r
)
477 win32_thread_info
*th
= thread_rec (current_thread_ptid (), TRUE
);
478 if (r
== -1 || r
> NUM_REGS
)
479 child_fetch_inferior_registers (regcache
, NUM_REGS
);
481 for (regno
= 0; regno
< r
; regno
++)
482 (*the_low_target
.fetch_inferior_register
) (regcache
, th
, regno
);
485 /* Store a new register value into the current thread context. We don't
486 change the program's context until later, when we resume it. */
488 child_store_inferior_registers (struct regcache
*regcache
, int r
)
491 win32_thread_info
*th
= thread_rec (current_thread_ptid (), TRUE
);
492 if (r
== -1 || r
== 0 || r
> NUM_REGS
)
493 child_store_inferior_registers (regcache
, NUM_REGS
);
495 for (regno
= 0; regno
< r
; regno
++)
496 (*the_low_target
.store_inferior_register
) (regcache
, th
, regno
);
499 /* Map the Windows error number in ERROR to a locale-dependent error
500 message string and return a pointer to it. Typically, the values
501 for ERROR come from GetLastError.
503 The string pointed to shall not be modified by the application,
504 but may be overwritten by a subsequent call to strwinerror
506 The strwinerror function does not change the current setting
510 strwinerror (DWORD error
)
512 static char buf
[1024];
514 DWORD lasterr
= GetLastError ();
515 DWORD chars
= FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
516 | FORMAT_MESSAGE_ALLOCATE_BUFFER
,
519 0, /* Default language */
525 /* If there is an \r\n appended, zap it. */
527 && msgbuf
[chars
- 2] == '\r'
528 && msgbuf
[chars
- 1] == '\n')
534 if (chars
> ((COUNTOF (buf
)) - 1))
536 chars
= COUNTOF (buf
) - 1;
541 wcstombs (buf
, msgbuf
, chars
+ 1);
543 strncpy (buf
, msgbuf
, chars
+ 1);
548 sprintf (buf
, "unknown win32 error (%u)", (unsigned) error
);
550 SetLastError (lasterr
);
555 create_process (const char *program
, char *args
,
556 DWORD flags
, PROCESS_INFORMATION
*pi
)
558 const char *inferior_cwd
= get_inferior_cwd ();
559 std::string expanded_infcwd
= gdb_tilde_expand (inferior_cwd
);
563 wchar_t *p
, *wprogram
, *wargs
, *wcwd
= NULL
;
566 wprogram
= alloca ((strlen (program
) + 1) * sizeof (wchar_t));
567 mbstowcs (wprogram
, program
, strlen (program
) + 1);
569 for (p
= wprogram
; *p
; ++p
)
573 argslen
= strlen (args
);
574 wargs
= alloca ((argslen
+ 1) * sizeof (wchar_t));
575 mbstowcs (wargs
, args
, argslen
+ 1);
577 if (inferior_cwd
!= NULL
)
579 std::replace (expanded_infcwd
.begin (), expanded_infcwd
.end (),
581 wcwd
= alloca ((expanded_infcwd
.size () + 1) * sizeof (wchar_t));
582 if (mbstowcs (wcwd
, expanded_infcwd
.c_str (),
583 expanded_infcwd
.size () + 1) == NULL
)
586 Could not convert the expanded inferior cwd to wide-char."));
590 ret
= CreateProcessW (wprogram
, /* image name */
591 wargs
, /* command line */
592 NULL
, /* security, not supported */
593 NULL
, /* thread, not supported */
594 FALSE
, /* inherit handles, not supported */
595 flags
, /* start flags */
596 NULL
, /* environment, not supported */
597 wcwd
, /* current directory */
598 NULL
, /* start info, not supported */
601 STARTUPINFOA si
= { sizeof (STARTUPINFOA
) };
603 ret
= CreateProcessA (program
, /* image name */
604 args
, /* command line */
607 TRUE
, /* inherit handles */
608 flags
, /* start flags */
609 NULL
, /* environment */
610 expanded_infcwd
.c_str (), /* current directory */
611 &si
, /* start info */
618 /* Start a new process.
619 PROGRAM is the program name.
620 PROGRAM_ARGS is the vector containing the inferior's args.
621 Returns the new PID on success, -1 on failure. Registers the new
622 process with the process list. */
624 win32_create_inferior (const char *program
,
625 const std::vector
<char *> &program_args
)
628 char real_path
[PATH_MAX
];
629 char *orig_path
, *new_path
, *path_ptr
;
635 PROCESS_INFORMATION pi
;
637 std::string str_program_args
= stringify_argv (program_args
);
638 char *args
= (char *) str_program_args
.c_str ();
640 /* win32_wait needs to know we're not attaching. */
644 error ("No executable specified, specify executable to debug.\n");
646 flags
= DEBUG_PROCESS
| DEBUG_ONLY_THIS_PROCESS
;
650 path_ptr
= getenv ("PATH");
653 int size
= cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, NULL
, 0);
654 orig_path
= (char *) alloca (strlen (path_ptr
) + 1);
655 new_path
= (char *) alloca (size
);
656 strcpy (orig_path
, path_ptr
);
657 cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, new_path
, size
);
658 setenv ("PATH", new_path
, 1);
660 cygwin_conv_path (CCP_POSIX_TO_WIN_A
, program
, real_path
, PATH_MAX
);
664 OUTMSG2 (("Command line is \"%s\"\n", args
));
666 #ifdef CREATE_NEW_PROCESS_GROUP
667 flags
|= CREATE_NEW_PROCESS_GROUP
;
670 ret
= create_process (program
, args
, flags
, &pi
);
671 err
= GetLastError ();
672 if (!ret
&& err
== ERROR_FILE_NOT_FOUND
)
674 char *exename
= (char *) alloca (strlen (program
) + 5);
675 strcat (strcpy (exename
, program
), ".exe");
676 ret
= create_process (exename
, args
, flags
, &pi
);
677 err
= GetLastError ();
682 setenv ("PATH", orig_path
, 1);
687 error ("Error creating process \"%s%s\", (error %d): %s\n",
688 program
, args
, (int) err
, strwinerror (err
));
692 OUTMSG2 (("Process created: %s\n", (char *) args
));
696 /* On Windows CE this handle can't be closed. The OS reuses
697 it in the debug events, while the 9x/NT versions of Windows
698 probably use a DuplicateHandle'd one. */
699 CloseHandle (pi
.hThread
);
702 do_initial_child_stuff (pi
.hProcess
, pi
.dwProcessId
, 0);
704 return current_process_id
;
707 /* Attach to a running process.
708 PID is the process ID to attach to, specified by the user
709 or a higher layer. */
711 win32_attach (unsigned long pid
)
714 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
717 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
719 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
721 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
723 h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
726 if (DebugActiveProcess (pid
))
728 if (DebugSetProcessKillOnExit
!= NULL
)
729 DebugSetProcessKillOnExit (FALSE
);
731 /* win32_wait needs to know we're attaching. */
733 do_initial_child_stuff (h
, pid
, 1);
740 err
= GetLastError ();
741 error ("Attach to process failed (error %d): %s\n",
742 (int) err
, strwinerror (err
));
745 /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */
747 handle_output_debug_string (void)
749 #define READ_BUFFER_LEN 1024
751 char s
[READ_BUFFER_LEN
+ 1] = { 0 };
752 DWORD nbytes
= current_event
.u
.DebugString
.nDebugStringLength
;
757 if (nbytes
> READ_BUFFER_LEN
)
758 nbytes
= READ_BUFFER_LEN
;
760 addr
= (CORE_ADDR
) (size_t) current_event
.u
.DebugString
.lpDebugStringData
;
762 if (current_event
.u
.DebugString
.fUnicode
)
764 /* The event tells us how many bytes, not chars, even
766 WCHAR buffer
[(READ_BUFFER_LEN
+ 1) / sizeof (WCHAR
)] = { 0 };
767 if (read_inferior_memory (addr
, (unsigned char *) buffer
, nbytes
) != 0)
769 wcstombs (s
, buffer
, (nbytes
+ 1) / sizeof (WCHAR
));
773 if (read_inferior_memory (addr
, (unsigned char *) s
, nbytes
) != 0)
777 if (!startswith (s
, "cYg"))
787 #undef READ_BUFFER_LEN
791 win32_clear_inferiors (void)
793 if (current_process_handle
!= NULL
)
794 CloseHandle (current_process_handle
);
796 for_each_inferior (&all_threads
, delete_thread_info
);
800 /* Kill all inferiors. */
804 struct process_info
*process
;
806 if (current_process_handle
== NULL
)
809 TerminateProcess (current_process_handle
, 0);
812 if (!child_continue (DBG_CONTINUE
, -1))
814 if (!WaitForDebugEvent (¤t_event
, INFINITE
))
816 if (current_event
.dwDebugEventCode
== EXIT_PROCESS_DEBUG_EVENT
)
818 else if (current_event
.dwDebugEventCode
== OUTPUT_DEBUG_STRING_EVENT
)
819 handle_output_debug_string ();
822 win32_clear_inferiors ();
824 process
= find_process_pid (pid
);
825 remove_process (process
);
829 /* Detach from inferior PID. */
831 win32_detach (int pid
)
833 struct process_info
*process
;
834 winapi_DebugActiveProcessStop DebugActiveProcessStop
= NULL
;
835 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
837 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
839 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
841 DebugActiveProcessStop
= GETPROCADDRESS (dll
, DebugActiveProcessStop
);
842 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
844 if (DebugSetProcessKillOnExit
== NULL
845 || DebugActiveProcessStop
== NULL
)
849 struct thread_resume resume
;
850 resume
.thread
= minus_one_ptid
;
851 resume
.kind
= resume_continue
;
853 win32_resume (&resume
, 1);
856 if (!DebugActiveProcessStop (current_process_id
))
859 DebugSetProcessKillOnExit (FALSE
);
860 process
= find_process_pid (pid
);
861 remove_process (process
);
863 win32_clear_inferiors ();
868 win32_mourn (struct process_info
*process
)
870 remove_process (process
);
873 /* Wait for inferiors to end. */
877 HANDLE h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
880 WaitForSingleObject (h
, INFINITE
);
885 /* Return 1 iff the thread with thread ID TID is alive. */
887 win32_thread_alive (ptid_t ptid
)
889 /* Our thread list is reliable; don't bother to poll target
891 return find_thread_ptid (ptid
) != NULL
;
894 /* Resume the inferior process. RESUME_INFO describes how we want
897 win32_resume (struct thread_resume
*resume_info
, size_t n
)
902 win32_thread_info
*th
;
903 DWORD continue_status
= DBG_CONTINUE
;
906 /* This handles the very limited set of resume packets that GDB can
907 currently produce. */
909 if (n
== 1 && ptid_equal (resume_info
[0].thread
, minus_one_ptid
))
914 /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make
915 the Windows resume code do the right thing for thread switching. */
916 tid
= current_event
.dwThreadId
;
918 if (!ptid_equal (resume_info
[0].thread
, minus_one_ptid
))
920 sig
= gdb_signal_from_host (resume_info
[0].sig
);
921 step
= resume_info
[0].kind
== resume_step
;
929 if (sig
!= GDB_SIGNAL_0
)
931 if (current_event
.dwDebugEventCode
!= EXCEPTION_DEBUG_EVENT
)
933 OUTMSG (("Cannot continue with signal %s here.\n",
934 gdb_signal_to_string (sig
)));
936 else if (sig
== last_sig
)
937 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
939 OUTMSG (("Can only continue with received signal %s.\n",
940 gdb_signal_to_string (last_sig
)));
943 last_sig
= GDB_SIGNAL_0
;
945 /* Get context for the currently selected thread. */
946 ptid
= debug_event_ptid (¤t_event
);
947 th
= thread_rec (ptid
, FALSE
);
950 win32_prepare_to_resume (th
);
952 if (th
->context
.ContextFlags
)
954 /* Move register values from the inferior into the thread
955 context structure. */
956 regcache_invalidate ();
960 if (the_low_target
.single_step
!= NULL
)
961 (*the_low_target
.single_step
) (th
);
963 error ("Single stepping is not supported "
964 "in this configuration.\n");
967 win32_set_thread_context (th
);
968 th
->context
.ContextFlags
= 0;
972 /* Allow continuing with the same signal that interrupted us.
973 Otherwise complain. */
975 child_continue (continue_status
, tid
);
979 win32_add_one_solib (const char *name
, CORE_ADDR load_addr
)
981 char buf
[MAX_PATH
+ 1];
982 char buf2
[MAX_PATH
+ 1];
985 WIN32_FIND_DATA w32_fd
;
986 WCHAR wname
[MAX_PATH
+ 1];
987 mbstowcs (wname
, name
, MAX_PATH
);
988 HANDLE h
= FindFirstFile (wname
, &w32_fd
);
990 WIN32_FIND_DATAA w32_fd
;
991 HANDLE h
= FindFirstFileA (name
, &w32_fd
);
994 /* The symbols in a dll are offset by 0x1000, which is the
995 offset from 0 of the first byte in an image - because
996 of the file header and the section alignment. */
999 if (h
== INVALID_HANDLE_VALUE
)
1007 char cwd
[MAX_PATH
+ 1];
1009 if (GetCurrentDirectoryA (MAX_PATH
+ 1, cwd
))
1011 p
= strrchr (buf
, '\\');
1014 SetCurrentDirectoryA (buf
);
1015 GetFullPathNameA (w32_fd
.cFileName
, MAX_PATH
, buf
, &p
);
1016 SetCurrentDirectoryA (cwd
);
1023 if (strcasecmp (buf
, "ntdll.dll") == 0)
1025 GetSystemDirectoryA (buf
, sizeof (buf
));
1026 strcat (buf
, "\\ntdll.dll");
1031 cygwin_conv_path (CCP_WIN_A_TO_POSIX
, buf
, buf2
, sizeof (buf2
));
1036 loaded_dll (buf2
, load_addr
);
1040 get_image_name (HANDLE h
, void *address
, int unicode
)
1042 static char buf
[(2 * MAX_PATH
) + 1];
1043 DWORD size
= unicode
? sizeof (WCHAR
) : sizeof (char);
1049 /* Attempt to read the name of the dll that was detected.
1050 This is documented to work only when actively debugging
1051 a program. It will not work for attached processes. */
1052 if (address
== NULL
)
1056 /* Windows CE reports the address of the image name,
1057 instead of an address of a pointer into the image name. */
1058 address_ptr
= address
;
1060 /* See if we could read the address of a string, and that the
1061 address isn't null. */
1062 if (!ReadProcessMemory (h
, address
, &address_ptr
,
1063 sizeof (address_ptr
), &done
)
1064 || done
!= sizeof (address_ptr
)
1069 /* Find the length of the string */
1070 while (ReadProcessMemory (h
, address_ptr
+ len
++ * size
, &b
, size
, &done
)
1071 && (b
[0] != 0 || b
[size
- 1] != 0) && done
== size
)
1075 ReadProcessMemory (h
, address_ptr
, buf
, len
, &done
);
1078 WCHAR
*unicode_address
= XALLOCAVEC (WCHAR
, len
);
1079 ReadProcessMemory (h
, address_ptr
, unicode_address
, len
* sizeof (WCHAR
),
1082 WideCharToMultiByte (CP_ACP
, 0, unicode_address
, len
, buf
, len
, 0, 0);
1088 typedef BOOL (WINAPI
*winapi_EnumProcessModules
) (HANDLE
, HMODULE
*,
1090 typedef BOOL (WINAPI
*winapi_GetModuleInformation
) (HANDLE
, HMODULE
,
1091 LPMODULEINFO
, DWORD
);
1092 typedef DWORD (WINAPI
*winapi_GetModuleFileNameExA
) (HANDLE
, HMODULE
,
1095 static winapi_EnumProcessModules win32_EnumProcessModules
;
1096 static winapi_GetModuleInformation win32_GetModuleInformation
;
1097 static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA
;
1102 static int psapi_loaded
= 0;
1103 static HMODULE dll
= NULL
;
1108 dll
= LoadLibrary (TEXT("psapi.dll"));
1111 win32_EnumProcessModules
=
1112 GETPROCADDRESS (dll
, EnumProcessModules
);
1113 win32_GetModuleInformation
=
1114 GETPROCADDRESS (dll
, GetModuleInformation
);
1115 win32_GetModuleFileNameExA
=
1116 GETPROCADDRESS (dll
, GetModuleFileNameExA
);
1119 return (win32_EnumProcessModules
!= NULL
1120 && win32_GetModuleInformation
!= NULL
1121 && win32_GetModuleFileNameExA
!= NULL
);
1126 /* Iterate over all DLLs currently mapped by our inferior, and
1127 add them to our list of solibs. */
1130 win32_add_all_dlls (void)
1134 HMODULE
*DllHandle
= dh_buf
;
1142 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1147 if (!ok
|| !cbNeeded
)
1150 DllHandle
= (HMODULE
*) alloca (cbNeeded
);
1154 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1161 for (i
= 1; i
< ((size_t) cbNeeded
/ sizeof (HMODULE
)); i
++)
1164 char dll_name
[MAX_PATH
];
1166 if (!(*win32_GetModuleInformation
) (current_process_handle
,
1171 if ((*win32_GetModuleFileNameExA
) (current_process_handle
,
1176 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) mi
.lpBaseOfDll
);
1181 typedef HANDLE (WINAPI
*winapi_CreateToolhelp32Snapshot
) (DWORD
, DWORD
);
1182 typedef BOOL (WINAPI
*winapi_Module32First
) (HANDLE
, LPMODULEENTRY32
);
1183 typedef BOOL (WINAPI
*winapi_Module32Next
) (HANDLE
, LPMODULEENTRY32
);
1185 /* Handle a DLL load event.
1187 This function assumes that this event did not occur during inferior
1188 initialization, where their event info may be incomplete (see
1189 do_initial_child_stuff and win32_add_all_dlls for more info on
1190 how we handle DLL loading during that phase). */
1193 handle_load_dll (void)
1195 LOAD_DLL_DEBUG_INFO
*event
= ¤t_event
.u
.LoadDll
;
1198 dll_name
= get_image_name (current_process_handle
,
1199 event
->lpImageName
, event
->fUnicode
);
1203 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) event
->lpBaseOfDll
);
1206 /* Handle a DLL unload event.
1208 This function assumes that this event did not occur during inferior
1209 initialization, where their event info may be incomplete (see
1210 do_initial_child_stuff and win32_add_one_solib for more info
1211 on how we handle DLL loading during that phase). */
1214 handle_unload_dll (void)
1216 CORE_ADDR load_addr
=
1217 (CORE_ADDR
) (uintptr_t) current_event
.u
.UnloadDll
.lpBaseOfDll
;
1219 /* The symbols in a dll are offset by 0x1000, which is the
1220 offset from 0 of the first byte in an image - because
1221 of the file header and the section alignment. */
1222 load_addr
+= 0x1000;
1223 unloaded_dll (NULL
, load_addr
);
1227 handle_exception (struct target_waitstatus
*ourstatus
)
1229 DWORD code
= current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
;
1231 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1235 case EXCEPTION_ACCESS_VIOLATION
:
1236 OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION"));
1237 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1239 case STATUS_STACK_OVERFLOW
:
1240 OUTMSG2 (("STATUS_STACK_OVERFLOW"));
1241 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1243 case STATUS_FLOAT_DENORMAL_OPERAND
:
1244 OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND"));
1245 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1247 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED
:
1248 OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"));
1249 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1251 case STATUS_FLOAT_INEXACT_RESULT
:
1252 OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT"));
1253 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1255 case STATUS_FLOAT_INVALID_OPERATION
:
1256 OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION"));
1257 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1259 case STATUS_FLOAT_OVERFLOW
:
1260 OUTMSG2 (("STATUS_FLOAT_OVERFLOW"));
1261 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1263 case STATUS_FLOAT_STACK_CHECK
:
1264 OUTMSG2 (("STATUS_FLOAT_STACK_CHECK"));
1265 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1267 case STATUS_FLOAT_UNDERFLOW
:
1268 OUTMSG2 (("STATUS_FLOAT_UNDERFLOW"));
1269 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1271 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1272 OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO"));
1273 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1275 case STATUS_INTEGER_DIVIDE_BY_ZERO
:
1276 OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO"));
1277 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1279 case STATUS_INTEGER_OVERFLOW
:
1280 OUTMSG2 (("STATUS_INTEGER_OVERFLOW"));
1281 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1283 case EXCEPTION_BREAKPOINT
:
1284 OUTMSG2 (("EXCEPTION_BREAKPOINT"));
1285 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1287 /* Remove the initial breakpoint. */
1288 check_breakpoints ((CORE_ADDR
) (long) current_event
1289 .u
.Exception
.ExceptionRecord
.ExceptionAddress
);
1293 OUTMSG2 (("DBG_CONTROL_C"));
1294 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1296 case DBG_CONTROL_BREAK
:
1297 OUTMSG2 (("DBG_CONTROL_BREAK"));
1298 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1300 case EXCEPTION_SINGLE_STEP
:
1301 OUTMSG2 (("EXCEPTION_SINGLE_STEP"));
1302 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1304 case EXCEPTION_ILLEGAL_INSTRUCTION
:
1305 OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION"));
1306 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1308 case EXCEPTION_PRIV_INSTRUCTION
:
1309 OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION"));
1310 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1312 case EXCEPTION_NONCONTINUABLE_EXCEPTION
:
1313 OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION"));
1314 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1317 if (current_event
.u
.Exception
.dwFirstChance
)
1319 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1322 OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s",
1323 (unsigned) current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
,
1324 phex_nz ((uintptr_t) current_event
.u
.Exception
.ExceptionRecord
.
1325 ExceptionAddress
, sizeof (uintptr_t))));
1326 ourstatus
->value
.sig
= GDB_SIGNAL_UNKNOWN
;
1330 last_sig
= ourstatus
->value
.sig
;
1335 suspend_one_thread (thread_info
*thread
)
1337 win32_thread_info
*th
= (win32_thread_info
*) thread_target_data (thread
);
1341 if (SuspendThread (th
->h
) == (DWORD
) -1)
1343 DWORD err
= GetLastError ();
1344 OUTMSG (("warning: SuspendThread failed in suspend_one_thread, "
1345 "(error %d): %s\n", (int) err
, strwinerror (err
)));
1353 fake_breakpoint_event (void)
1355 OUTMSG2(("fake_breakpoint_event\n"));
1357 faked_breakpoint
= 1;
1359 memset (¤t_event
, 0, sizeof (current_event
));
1360 current_event
.dwThreadId
= main_thread_id
;
1361 current_event
.dwDebugEventCode
= EXCEPTION_DEBUG_EVENT
;
1362 current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
1363 = EXCEPTION_BREAKPOINT
;
1365 for_each_inferior (&all_threads
, suspend_one_thread
);
1370 auto_delete_breakpoint (CORE_ADDR stop_pc
)
1376 /* Get the next event from the child. */
1379 get_child_debug_event (struct target_waitstatus
*ourstatus
)
1383 last_sig
= GDB_SIGNAL_0
;
1384 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1386 /* Check if GDB sent us an interrupt request. */
1387 check_remote_input_interrupt_request ();
1389 if (soft_interrupt_requested
)
1391 soft_interrupt_requested
= 0;
1392 fake_breakpoint_event ();
1401 /* WinCE doesn't set an initial breakpoint automatically. To
1402 stop the inferior, we flush all currently pending debug
1403 events -- the thread list and the dll list are always
1404 reported immediatelly without delay, then, we suspend all
1405 threads and pretend we saw a trap at the current PC of the
1408 Contrary to desktop Windows, Windows CE *does* report the dll
1409 names on LOAD_DLL_DEBUG_EVENTs resulting from a
1410 DebugActiveProcess call. This limits the way we can detect
1411 if all the dlls have already been reported. If we get a real
1412 debug event before leaving attaching, the worst that will
1413 happen is the user will see a spurious breakpoint. */
1415 current_event
.dwDebugEventCode
= 0;
1416 if (!WaitForDebugEvent (¤t_event
, 0))
1418 OUTMSG2(("no attach events left\n"));
1419 fake_breakpoint_event ();
1423 OUTMSG2(("got attach event\n"));
1428 /* Keep the wait time low enough for confortable remote
1429 interruption, but high enough so gdbserver doesn't become a
1431 if (!WaitForDebugEvent (¤t_event
, 250))
1433 DWORD e
= GetLastError();
1435 if (e
== ERROR_PIPE_NOT_CONNECTED
)
1437 /* This will happen if the loader fails to succesfully
1438 load the application, e.g., if the main executable
1439 tries to pull in a non-existing export from a
1441 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1442 ourstatus
->value
.integer
= 1;
1452 switch (current_event
.dwDebugEventCode
)
1454 case CREATE_THREAD_DEBUG_EVENT
:
1455 OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT "
1456 "for pid=%u tid=%x)\n",
1457 (unsigned) current_event
.dwProcessId
,
1458 (unsigned) current_event
.dwThreadId
));
1460 /* Record the existence of this thread. */
1461 child_add_thread (current_event
.dwProcessId
,
1462 current_event
.dwThreadId
,
1463 current_event
.u
.CreateThread
.hThread
,
1464 current_event
.u
.CreateThread
.lpThreadLocalBase
);
1467 case EXIT_THREAD_DEBUG_EVENT
:
1468 OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT "
1469 "for pid=%u tid=%x\n",
1470 (unsigned) current_event
.dwProcessId
,
1471 (unsigned) current_event
.dwThreadId
));
1472 child_delete_thread (current_event
.dwProcessId
,
1473 current_event
.dwThreadId
);
1475 current_thread
= get_first_thread ();
1478 case CREATE_PROCESS_DEBUG_EVENT
:
1479 OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT "
1480 "for pid=%u tid=%x\n",
1481 (unsigned) current_event
.dwProcessId
,
1482 (unsigned) current_event
.dwThreadId
));
1483 CloseHandle (current_event
.u
.CreateProcessInfo
.hFile
);
1485 current_process_handle
= current_event
.u
.CreateProcessInfo
.hProcess
;
1486 main_thread_id
= current_event
.dwThreadId
;
1488 /* Add the main thread. */
1489 child_add_thread (current_event
.dwProcessId
,
1491 current_event
.u
.CreateProcessInfo
.hThread
,
1492 current_event
.u
.CreateProcessInfo
.lpThreadLocalBase
);
1497 /* Windows CE doesn't set the initial breakpoint
1498 automatically like the desktop versions of Windows do.
1499 We add it explicitly here. It will be removed as soon as
1501 set_breakpoint_at ((CORE_ADDR
) (long) current_event
.u
1502 .CreateProcessInfo
.lpStartAddress
,
1503 auto_delete_breakpoint
);
1508 case EXIT_PROCESS_DEBUG_EVENT
:
1509 OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT "
1510 "for pid=%u tid=%x\n",
1511 (unsigned) current_event
.dwProcessId
,
1512 (unsigned) current_event
.dwThreadId
));
1513 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1514 ourstatus
->value
.integer
= current_event
.u
.ExitProcess
.dwExitCode
;
1515 child_continue (DBG_CONTINUE
, -1);
1516 CloseHandle (current_process_handle
);
1517 current_process_handle
= NULL
;
1520 case LOAD_DLL_DEBUG_EVENT
:
1521 OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT "
1522 "for pid=%u tid=%x\n",
1523 (unsigned) current_event
.dwProcessId
,
1524 (unsigned) current_event
.dwThreadId
));
1525 CloseHandle (current_event
.u
.LoadDll
.hFile
);
1526 if (! child_initialization_done
)
1530 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1531 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1534 case UNLOAD_DLL_DEBUG_EVENT
:
1535 OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT "
1536 "for pid=%u tid=%x\n",
1537 (unsigned) current_event
.dwProcessId
,
1538 (unsigned) current_event
.dwThreadId
));
1539 if (! child_initialization_done
)
1541 handle_unload_dll ();
1542 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1543 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1546 case EXCEPTION_DEBUG_EVENT
:
1547 OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT "
1548 "for pid=%u tid=%x\n",
1549 (unsigned) current_event
.dwProcessId
,
1550 (unsigned) current_event
.dwThreadId
));
1551 handle_exception (ourstatus
);
1554 case OUTPUT_DEBUG_STRING_EVENT
:
1555 /* A message from the kernel (or Cygwin). */
1556 OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT "
1557 "for pid=%u tid=%x\n",
1558 (unsigned) current_event
.dwProcessId
,
1559 (unsigned) current_event
.dwThreadId
));
1560 handle_output_debug_string ();
1564 OUTMSG2 (("gdbserver: kernel event unknown "
1565 "for pid=%u tid=%x code=%x\n",
1566 (unsigned) current_event
.dwProcessId
,
1567 (unsigned) current_event
.dwThreadId
,
1568 (unsigned) current_event
.dwDebugEventCode
));
1572 ptid
= debug_event_ptid (¤t_event
);
1573 current_thread
= find_thread_ptid (ptid
);
1577 /* Wait for the inferior process to change state.
1578 STATUS will be filled in with a response code to send to GDB.
1579 Returns the signal which caused the process to stop. */
1581 win32_wait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
)
1583 struct regcache
*regcache
;
1585 if (cached_status
.kind
!= TARGET_WAITKIND_IGNORE
)
1587 /* The core always does a wait after creating the inferior, and
1588 do_initial_child_stuff already ran the inferior to the
1589 initial breakpoint (or an exit, if creating the process
1590 fails). Report it now. */
1591 *ourstatus
= cached_status
;
1592 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
1593 return debug_event_ptid (¤t_event
);
1598 if (!get_child_debug_event (ourstatus
))
1601 switch (ourstatus
->kind
)
1603 case TARGET_WAITKIND_EXITED
:
1604 OUTMSG2 (("Child exited with retcode = %x\n",
1605 ourstatus
->value
.integer
));
1606 win32_clear_inferiors ();
1607 return pid_to_ptid (current_event
.dwProcessId
);
1608 case TARGET_WAITKIND_STOPPED
:
1609 case TARGET_WAITKIND_LOADED
:
1610 OUTMSG2 (("Child Stopped with signal = %d \n",
1611 ourstatus
->value
.sig
));
1613 regcache
= get_thread_regcache (current_thread
, 1);
1614 child_fetch_inferior_registers (regcache
, -1);
1615 return debug_event_ptid (¤t_event
);
1617 OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus
->kind
));
1619 case TARGET_WAITKIND_SPURIOUS
:
1620 /* do nothing, just continue */
1621 child_continue (DBG_CONTINUE
, -1);
1627 /* Fetch registers from the inferior process.
1628 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
1630 win32_fetch_inferior_registers (struct regcache
*regcache
, int regno
)
1632 child_fetch_inferior_registers (regcache
, regno
);
1635 /* Store registers to the inferior process.
1636 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
1638 win32_store_inferior_registers (struct regcache
*regcache
, int regno
)
1640 child_store_inferior_registers (regcache
, regno
);
1643 /* Read memory from the inferior process. This should generally be
1644 called through read_inferior_memory, which handles breakpoint shadowing.
1645 Read LEN bytes at MEMADDR into a buffer at MYADDR. */
1647 win32_read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
1649 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 0, 0) != len
;
1652 /* Write memory to the inferior process. This should generally be
1653 called through write_inferior_memory, which handles breakpoint shadowing.
1654 Write LEN bytes from the buffer at MYADDR to MEMADDR.
1655 Returns 0 on success and errno on failure. */
1657 win32_write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
1660 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 1, 0) != len
;
1663 /* Send an interrupt request to the inferior process. */
1665 win32_request_interrupt (void)
1667 winapi_DebugBreakProcess DebugBreakProcess
;
1668 winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent
;
1671 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
1673 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
1676 GenerateConsoleCtrlEvent
= GETPROCADDRESS (dll
, GenerateConsoleCtrlEvent
);
1678 if (GenerateConsoleCtrlEvent
!= NULL
1679 && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT
, current_process_id
))
1682 /* GenerateConsoleCtrlEvent can fail if process id being debugged is
1683 not a process group id.
1684 Fallback to XP/Vista 'DebugBreakProcess', which generates a
1685 breakpoint exception in the interior process. */
1687 DebugBreakProcess
= GETPROCADDRESS (dll
, DebugBreakProcess
);
1689 if (DebugBreakProcess
!= NULL
1690 && DebugBreakProcess (current_process_handle
))
1693 /* Last resort, suspend all threads manually. */
1694 soft_interrupt_requested
= 1;
1699 win32_error_to_fileio_error (DWORD err
)
1703 case ERROR_BAD_PATHNAME
:
1704 case ERROR_FILE_NOT_FOUND
:
1705 case ERROR_INVALID_NAME
:
1706 case ERROR_PATH_NOT_FOUND
:
1707 return FILEIO_ENOENT
;
1709 case ERROR_IO_DEVICE
:
1710 case ERROR_OPEN_FAILED
:
1712 case ERROR_INVALID_HANDLE
:
1713 return FILEIO_EBADF
;
1714 case ERROR_ACCESS_DENIED
:
1715 case ERROR_SHARING_VIOLATION
:
1716 return FILEIO_EACCES
;
1717 case ERROR_NOACCESS
:
1718 return FILEIO_EFAULT
;
1720 return FILEIO_EBUSY
;
1721 case ERROR_ALREADY_EXISTS
:
1722 case ERROR_FILE_EXISTS
:
1723 return FILEIO_EEXIST
;
1724 case ERROR_BAD_DEVICE
:
1725 return FILEIO_ENODEV
;
1726 case ERROR_DIRECTORY
:
1727 return FILEIO_ENOTDIR
;
1728 case ERROR_FILENAME_EXCED_RANGE
:
1729 case ERROR_INVALID_DATA
:
1730 case ERROR_INVALID_PARAMETER
:
1731 case ERROR_NEGATIVE_SEEK
:
1732 return FILEIO_EINVAL
;
1733 case ERROR_TOO_MANY_OPEN_FILES
:
1734 return FILEIO_EMFILE
;
1735 case ERROR_HANDLE_DISK_FULL
:
1736 case ERROR_DISK_FULL
:
1737 return FILEIO_ENOSPC
;
1738 case ERROR_WRITE_PROTECT
:
1739 return FILEIO_EROFS
;
1740 case ERROR_NOT_SUPPORTED
:
1741 return FILEIO_ENOSYS
;
1744 return FILEIO_EUNKNOWN
;
1748 wince_hostio_last_error (char *buf
)
1750 DWORD winerr
= GetLastError ();
1751 int fileio_err
= win32_error_to_fileio_error (winerr
);
1752 sprintf (buf
, "F-1,%x", fileio_err
);
1756 /* Write Windows OS Thread Information Block address. */
1759 win32_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1761 win32_thread_info
*th
;
1762 th
= thread_rec (ptid
, 0);
1766 *addr
= th
->thread_local_base
;
1770 /* Implementation of the target_ops method "sw_breakpoint_from_kind". */
1772 static const gdb_byte
*
1773 win32_sw_breakpoint_from_kind (int kind
, int *size
)
1775 *size
= the_low_target
.breakpoint_len
;
1776 return the_low_target
.breakpoint
;
1779 static struct target_ops win32_target_ops
= {
1780 win32_create_inferior
,
1781 NULL
, /* post_create_inferior */
1790 win32_fetch_inferior_registers
,
1791 win32_store_inferior_registers
,
1792 NULL
, /* prepare_to_access_memory */
1793 NULL
, /* done_accessing_memory */
1794 win32_read_inferior_memory
,
1795 win32_write_inferior_memory
,
1796 NULL
, /* lookup_symbols */
1797 win32_request_interrupt
,
1798 NULL
, /* read_auxv */
1799 win32_supports_z_point_type
,
1802 NULL
, /* stopped_by_sw_breakpoint */
1803 NULL
, /* supports_stopped_by_sw_breakpoint */
1804 NULL
, /* stopped_by_hw_breakpoint */
1805 NULL
, /* supports_stopped_by_hw_breakpoint */
1806 target_can_do_hardware_single_step
,
1807 win32_stopped_by_watchpoint
,
1808 win32_stopped_data_address
,
1809 NULL
, /* read_offsets */
1810 NULL
, /* get_tls_address */
1811 NULL
, /* qxfer_spu */
1813 wince_hostio_last_error
,
1815 hostio_last_error_from_errno
,
1817 NULL
, /* qxfer_osdata */
1818 NULL
, /* qxfer_siginfo */
1819 NULL
, /* supports_non_stop */
1821 NULL
, /* start_non_stop */
1822 NULL
, /* supports_multi_process */
1823 NULL
, /* supports_fork_events */
1824 NULL
, /* supports_vfork_events */
1825 NULL
, /* supports_exec_events */
1826 NULL
, /* handle_new_gdb_connection */
1827 NULL
, /* handle_monitor_command */
1828 NULL
, /* core_of_thread */
1829 NULL
, /* read_loadmap */
1830 NULL
, /* process_qsupported */
1831 NULL
, /* supports_tracepoints */
1833 NULL
, /* write_pc */
1834 NULL
, /* thread_stopped */
1835 win32_get_tib_address
,
1836 NULL
, /* pause_all */
1837 NULL
, /* unpause_all */
1838 NULL
, /* stabilize_threads */
1839 NULL
, /* install_fast_tracepoint_jump_pad */
1840 NULL
, /* emit_ops */
1841 NULL
, /* supports_disable_randomization */
1842 NULL
, /* get_min_fast_tracepoint_insn_len */
1843 NULL
, /* qxfer_libraries_svr4 */
1844 NULL
, /* support_agent */
1845 NULL
, /* support_btrace */
1846 NULL
, /* enable_btrace */
1847 NULL
, /* disable_btrace */
1848 NULL
, /* read_btrace */
1849 NULL
, /* read_btrace_conf */
1850 NULL
, /* supports_range_stepping */
1851 NULL
, /* pid_to_exec_file */
1852 NULL
, /* multifs_open */
1853 NULL
, /* multifs_unlink */
1854 NULL
, /* multifs_readlink */
1855 NULL
, /* breakpoint_kind_from_pc */
1856 win32_sw_breakpoint_from_kind
,
1859 /* Initialize the Win32 backend. */
1861 initialize_low (void)
1863 set_target_ops (&win32_target_ops
);
1864 the_low_target
.arch_setup ();