1 /* Low level interface to Windows debugging, for gdbserver.
2 Copyright (C) 2006-2018 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_t (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_t (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_thread (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 ();
562 wchar_t *p
, *wprogram
, *wargs
, *wcwd
= NULL
;
565 wprogram
= alloca ((strlen (program
) + 1) * sizeof (wchar_t));
566 mbstowcs (wprogram
, program
, strlen (program
) + 1);
568 for (p
= wprogram
; *p
; ++p
)
572 argslen
= strlen (args
);
573 wargs
= alloca ((argslen
+ 1) * sizeof (wchar_t));
574 mbstowcs (wargs
, args
, argslen
+ 1);
576 if (inferior_cwd
!= NULL
)
578 std::string expanded_infcwd
= gdb_tilde_expand (inferior_cwd
);
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 /* current directory */
611 (inferior_cwd
== NULL
613 : gdb_tilde_expand (inferior_cwd
).c_str()),
614 &si
, /* start info */
621 /* Start a new process.
622 PROGRAM is the program name.
623 PROGRAM_ARGS is the vector containing the inferior's args.
624 Returns the new PID on success, -1 on failure. Registers the new
625 process with the process list. */
627 win32_create_inferior (const char *program
,
628 const std::vector
<char *> &program_args
)
630 client_state
&cs
= get_client_state ();
632 char real_path
[PATH_MAX
];
633 char *orig_path
, *new_path
, *path_ptr
;
639 PROCESS_INFORMATION pi
;
641 std::string str_program_args
= stringify_argv (program_args
);
642 char *args
= (char *) str_program_args
.c_str ();
644 /* win32_wait needs to know we're not attaching. */
648 error ("No executable specified, specify executable to debug.\n");
650 flags
= DEBUG_PROCESS
| DEBUG_ONLY_THIS_PROCESS
;
654 path_ptr
= getenv ("PATH");
657 int size
= cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, NULL
, 0);
658 orig_path
= (char *) alloca (strlen (path_ptr
) + 1);
659 new_path
= (char *) alloca (size
);
660 strcpy (orig_path
, path_ptr
);
661 cygwin_conv_path_list (CCP_POSIX_TO_WIN_A
, path_ptr
, new_path
, size
);
662 setenv ("PATH", new_path
, 1);
664 cygwin_conv_path (CCP_POSIX_TO_WIN_A
, program
, real_path
, PATH_MAX
);
668 OUTMSG2 (("Command line is \"%s\"\n", args
));
670 #ifdef CREATE_NEW_PROCESS_GROUP
671 flags
|= CREATE_NEW_PROCESS_GROUP
;
674 ret
= create_process (program
, args
, flags
, &pi
);
675 err
= GetLastError ();
676 if (!ret
&& err
== ERROR_FILE_NOT_FOUND
)
678 char *exename
= (char *) alloca (strlen (program
) + 5);
679 strcat (strcpy (exename
, program
), ".exe");
680 ret
= create_process (exename
, args
, flags
, &pi
);
681 err
= GetLastError ();
686 setenv ("PATH", orig_path
, 1);
691 error ("Error creating process \"%s%s\", (error %d): %s\n",
692 program
, args
, (int) err
, strwinerror (err
));
696 OUTMSG2 (("Process created: %s\n", (char *) args
));
700 /* On Windows CE this handle can't be closed. The OS reuses
701 it in the debug events, while the 9x/NT versions of Windows
702 probably use a DuplicateHandle'd one. */
703 CloseHandle (pi
.hThread
);
706 do_initial_child_stuff (pi
.hProcess
, pi
.dwProcessId
, 0);
708 /* Wait till we are at 1st instruction in program, return new pid
709 (assuming success). */
710 cs
.last_ptid
= win32_wait (ptid_t (current_process_id
), &cs
.last_status
, 0);
712 return current_process_id
;
715 /* Attach to a running process.
716 PID is the process ID to attach to, specified by the user
717 or a higher layer. */
719 win32_attach (unsigned long pid
)
722 winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit
= NULL
;
725 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
727 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
729 DebugSetProcessKillOnExit
= GETPROCADDRESS (dll
, DebugSetProcessKillOnExit
);
731 h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, pid
);
734 if (DebugActiveProcess (pid
))
736 if (DebugSetProcessKillOnExit
!= NULL
)
737 DebugSetProcessKillOnExit (FALSE
);
739 /* win32_wait needs to know we're attaching. */
741 do_initial_child_stuff (h
, pid
, 1);
748 err
= GetLastError ();
749 error ("Attach to process failed (error %d): %s\n",
750 (int) err
, strwinerror (err
));
753 /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */
755 handle_output_debug_string (void)
757 #define READ_BUFFER_LEN 1024
759 char s
[READ_BUFFER_LEN
+ 1] = { 0 };
760 DWORD nbytes
= current_event
.u
.DebugString
.nDebugStringLength
;
765 if (nbytes
> READ_BUFFER_LEN
)
766 nbytes
= READ_BUFFER_LEN
;
768 addr
= (CORE_ADDR
) (size_t) current_event
.u
.DebugString
.lpDebugStringData
;
770 if (current_event
.u
.DebugString
.fUnicode
)
772 /* The event tells us how many bytes, not chars, even
774 WCHAR buffer
[(READ_BUFFER_LEN
+ 1) / sizeof (WCHAR
)] = { 0 };
775 if (read_inferior_memory (addr
, (unsigned char *) buffer
, nbytes
) != 0)
777 wcstombs (s
, buffer
, (nbytes
+ 1) / sizeof (WCHAR
));
781 if (read_inferior_memory (addr
, (unsigned char *) s
, nbytes
) != 0)
785 if (!startswith (s
, "cYg"))
795 #undef READ_BUFFER_LEN
799 win32_clear_inferiors (void)
801 if (current_process_handle
!= NULL
)
802 CloseHandle (current_process_handle
);
804 for_each_thread (delete_thread_info
);
808 /* Implementation of target_ops::kill. */
811 win32_kill (process_info
*process
)
813 TerminateProcess (current_process_handle
, 0);
816 if (!child_continue (DBG_CONTINUE
, -1))
818 if (!WaitForDebugEvent (¤t_event
, INFINITE
))
820 if (current_event
.dwDebugEventCode
== EXIT_PROCESS_DEBUG_EVENT
)
822 else if (current_event
.dwDebugEventCode
== OUTPUT_DEBUG_STRING_EVENT
)
823 handle_output_debug_string ();
826 win32_clear_inferiors ();
828 remove_process (process
);
832 /* Implementation of target_ops::detach. */
835 win32_detach (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 remove_process (process
);
865 win32_clear_inferiors ();
870 win32_mourn (struct process_info
*process
)
872 remove_process (process
);
875 /* Implementation of target_ops::join. */
878 win32_join (process_info
*proc
)
880 HANDLE h
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
, proc
->pid
);
883 WaitForSingleObject (h
, INFINITE
);
888 /* Return 1 iff the thread with thread ID TID is alive. */
890 win32_thread_alive (ptid_t ptid
)
892 /* Our thread list is reliable; don't bother to poll target
894 return find_thread_ptid (ptid
) != NULL
;
897 /* Resume the inferior process. RESUME_INFO describes how we want
900 win32_resume (struct thread_resume
*resume_info
, size_t n
)
905 win32_thread_info
*th
;
906 DWORD continue_status
= DBG_CONTINUE
;
909 /* This handles the very limited set of resume packets that GDB can
910 currently produce. */
912 if (n
== 1 && resume_info
[0].thread
== minus_one_ptid
)
917 /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make
918 the Windows resume code do the right thing for thread switching. */
919 tid
= current_event
.dwThreadId
;
921 if (resume_info
[0].thread
!= minus_one_ptid
)
923 sig
= gdb_signal_from_host (resume_info
[0].sig
);
924 step
= resume_info
[0].kind
== resume_step
;
932 if (sig
!= GDB_SIGNAL_0
)
934 if (current_event
.dwDebugEventCode
!= EXCEPTION_DEBUG_EVENT
)
936 OUTMSG (("Cannot continue with signal %s here.\n",
937 gdb_signal_to_string (sig
)));
939 else if (sig
== last_sig
)
940 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
942 OUTMSG (("Can only continue with received signal %s.\n",
943 gdb_signal_to_string (last_sig
)));
946 last_sig
= GDB_SIGNAL_0
;
948 /* Get context for the currently selected thread. */
949 ptid
= debug_event_ptid (¤t_event
);
950 th
= thread_rec (ptid
, FALSE
);
953 win32_prepare_to_resume (th
);
955 if (th
->context
.ContextFlags
)
957 /* Move register values from the inferior into the thread
958 context structure. */
959 regcache_invalidate ();
963 if (the_low_target
.single_step
!= NULL
)
964 (*the_low_target
.single_step
) (th
);
966 error ("Single stepping is not supported "
967 "in this configuration.\n");
970 win32_set_thread_context (th
);
971 th
->context
.ContextFlags
= 0;
975 /* Allow continuing with the same signal that interrupted us.
976 Otherwise complain. */
978 child_continue (continue_status
, tid
);
982 win32_add_one_solib (const char *name
, CORE_ADDR load_addr
)
984 char buf
[MAX_PATH
+ 1];
985 char buf2
[MAX_PATH
+ 1];
988 WIN32_FIND_DATA w32_fd
;
989 WCHAR wname
[MAX_PATH
+ 1];
990 mbstowcs (wname
, name
, MAX_PATH
);
991 HANDLE h
= FindFirstFile (wname
, &w32_fd
);
993 WIN32_FIND_DATAA w32_fd
;
994 HANDLE h
= FindFirstFileA (name
, &w32_fd
);
997 /* The symbols in a dll are offset by 0x1000, which is the
998 offset from 0 of the first byte in an image - because
999 of the file header and the section alignment. */
1000 load_addr
+= 0x1000;
1002 if (h
== INVALID_HANDLE_VALUE
)
1010 char cwd
[MAX_PATH
+ 1];
1012 if (GetCurrentDirectoryA (MAX_PATH
+ 1, cwd
))
1014 p
= strrchr (buf
, '\\');
1017 SetCurrentDirectoryA (buf
);
1018 GetFullPathNameA (w32_fd
.cFileName
, MAX_PATH
, buf
, &p
);
1019 SetCurrentDirectoryA (cwd
);
1026 if (strcasecmp (buf
, "ntdll.dll") == 0)
1028 GetSystemDirectoryA (buf
, sizeof (buf
));
1029 strcat (buf
, "\\ntdll.dll");
1034 cygwin_conv_path (CCP_WIN_A_TO_POSIX
, buf
, buf2
, sizeof (buf2
));
1039 loaded_dll (buf2
, load_addr
);
1043 get_image_name (HANDLE h
, void *address
, int unicode
)
1045 static char buf
[(2 * MAX_PATH
) + 1];
1046 DWORD size
= unicode
? sizeof (WCHAR
) : sizeof (char);
1052 /* Attempt to read the name of the dll that was detected.
1053 This is documented to work only when actively debugging
1054 a program. It will not work for attached processes. */
1055 if (address
== NULL
)
1059 /* Windows CE reports the address of the image name,
1060 instead of an address of a pointer into the image name. */
1061 address_ptr
= address
;
1063 /* See if we could read the address of a string, and that the
1064 address isn't null. */
1065 if (!ReadProcessMemory (h
, address
, &address_ptr
,
1066 sizeof (address_ptr
), &done
)
1067 || done
!= sizeof (address_ptr
)
1072 /* Find the length of the string */
1073 while (ReadProcessMemory (h
, address_ptr
+ len
++ * size
, &b
, size
, &done
)
1074 && (b
[0] != 0 || b
[size
- 1] != 0) && done
== size
)
1078 ReadProcessMemory (h
, address_ptr
, buf
, len
, &done
);
1081 WCHAR
*unicode_address
= XALLOCAVEC (WCHAR
, len
);
1082 ReadProcessMemory (h
, address_ptr
, unicode_address
, len
* sizeof (WCHAR
),
1085 WideCharToMultiByte (CP_ACP
, 0, unicode_address
, len
, buf
, len
, 0, 0);
1091 typedef BOOL (WINAPI
*winapi_EnumProcessModules
) (HANDLE
, HMODULE
*,
1093 typedef BOOL (WINAPI
*winapi_GetModuleInformation
) (HANDLE
, HMODULE
,
1094 LPMODULEINFO
, DWORD
);
1095 typedef DWORD (WINAPI
*winapi_GetModuleFileNameExA
) (HANDLE
, HMODULE
,
1098 static winapi_EnumProcessModules win32_EnumProcessModules
;
1099 static winapi_GetModuleInformation win32_GetModuleInformation
;
1100 static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA
;
1105 static int psapi_loaded
= 0;
1106 static HMODULE dll
= NULL
;
1111 dll
= LoadLibrary (TEXT("psapi.dll"));
1114 win32_EnumProcessModules
=
1115 GETPROCADDRESS (dll
, EnumProcessModules
);
1116 win32_GetModuleInformation
=
1117 GETPROCADDRESS (dll
, GetModuleInformation
);
1118 win32_GetModuleFileNameExA
=
1119 GETPROCADDRESS (dll
, GetModuleFileNameExA
);
1122 return (win32_EnumProcessModules
!= NULL
1123 && win32_GetModuleInformation
!= NULL
1124 && win32_GetModuleFileNameExA
!= NULL
);
1129 /* Iterate over all DLLs currently mapped by our inferior, and
1130 add them to our list of solibs. */
1133 win32_add_all_dlls (void)
1137 HMODULE
*DllHandle
= dh_buf
;
1145 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1150 if (!ok
|| !cbNeeded
)
1153 DllHandle
= (HMODULE
*) alloca (cbNeeded
);
1157 ok
= (*win32_EnumProcessModules
) (current_process_handle
,
1164 for (i
= 1; i
< ((size_t) cbNeeded
/ sizeof (HMODULE
)); i
++)
1167 char dll_name
[MAX_PATH
];
1169 if (!(*win32_GetModuleInformation
) (current_process_handle
,
1174 if ((*win32_GetModuleFileNameExA
) (current_process_handle
,
1179 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) mi
.lpBaseOfDll
);
1184 typedef HANDLE (WINAPI
*winapi_CreateToolhelp32Snapshot
) (DWORD
, DWORD
);
1185 typedef BOOL (WINAPI
*winapi_Module32First
) (HANDLE
, LPMODULEENTRY32
);
1186 typedef BOOL (WINAPI
*winapi_Module32Next
) (HANDLE
, LPMODULEENTRY32
);
1188 /* Handle a DLL load event.
1190 This function assumes that this event did not occur during inferior
1191 initialization, where their event info may be incomplete (see
1192 do_initial_child_stuff and win32_add_all_dlls for more info on
1193 how we handle DLL loading during that phase). */
1196 handle_load_dll (void)
1198 LOAD_DLL_DEBUG_INFO
*event
= ¤t_event
.u
.LoadDll
;
1201 dll_name
= get_image_name (current_process_handle
,
1202 event
->lpImageName
, event
->fUnicode
);
1206 win32_add_one_solib (dll_name
, (CORE_ADDR
) (uintptr_t) event
->lpBaseOfDll
);
1209 /* Handle a DLL unload event.
1211 This function assumes that this event did not occur during inferior
1212 initialization, where their event info may be incomplete (see
1213 do_initial_child_stuff and win32_add_one_solib for more info
1214 on how we handle DLL loading during that phase). */
1217 handle_unload_dll (void)
1219 CORE_ADDR load_addr
=
1220 (CORE_ADDR
) (uintptr_t) current_event
.u
.UnloadDll
.lpBaseOfDll
;
1222 /* The symbols in a dll are offset by 0x1000, which is the
1223 offset from 0 of the first byte in an image - because
1224 of the file header and the section alignment. */
1225 load_addr
+= 0x1000;
1226 unloaded_dll (NULL
, load_addr
);
1230 handle_exception (struct target_waitstatus
*ourstatus
)
1232 DWORD code
= current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
;
1234 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1238 case EXCEPTION_ACCESS_VIOLATION
:
1239 OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION"));
1240 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1242 case STATUS_STACK_OVERFLOW
:
1243 OUTMSG2 (("STATUS_STACK_OVERFLOW"));
1244 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1246 case STATUS_FLOAT_DENORMAL_OPERAND
:
1247 OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND"));
1248 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1250 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED
:
1251 OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"));
1252 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1254 case STATUS_FLOAT_INEXACT_RESULT
:
1255 OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT"));
1256 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1258 case STATUS_FLOAT_INVALID_OPERATION
:
1259 OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION"));
1260 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1262 case STATUS_FLOAT_OVERFLOW
:
1263 OUTMSG2 (("STATUS_FLOAT_OVERFLOW"));
1264 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1266 case STATUS_FLOAT_STACK_CHECK
:
1267 OUTMSG2 (("STATUS_FLOAT_STACK_CHECK"));
1268 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1270 case STATUS_FLOAT_UNDERFLOW
:
1271 OUTMSG2 (("STATUS_FLOAT_UNDERFLOW"));
1272 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1274 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1275 OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO"));
1276 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1278 case STATUS_INTEGER_DIVIDE_BY_ZERO
:
1279 OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO"));
1280 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1282 case STATUS_INTEGER_OVERFLOW
:
1283 OUTMSG2 (("STATUS_INTEGER_OVERFLOW"));
1284 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1286 case EXCEPTION_BREAKPOINT
:
1287 OUTMSG2 (("EXCEPTION_BREAKPOINT"));
1288 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1290 /* Remove the initial breakpoint. */
1291 check_breakpoints ((CORE_ADDR
) (long) current_event
1292 .u
.Exception
.ExceptionRecord
.ExceptionAddress
);
1296 OUTMSG2 (("DBG_CONTROL_C"));
1297 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1299 case DBG_CONTROL_BREAK
:
1300 OUTMSG2 (("DBG_CONTROL_BREAK"));
1301 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1303 case EXCEPTION_SINGLE_STEP
:
1304 OUTMSG2 (("EXCEPTION_SINGLE_STEP"));
1305 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1307 case EXCEPTION_ILLEGAL_INSTRUCTION
:
1308 OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION"));
1309 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1311 case EXCEPTION_PRIV_INSTRUCTION
:
1312 OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION"));
1313 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1315 case EXCEPTION_NONCONTINUABLE_EXCEPTION
:
1316 OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION"));
1317 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1320 if (current_event
.u
.Exception
.dwFirstChance
)
1322 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1325 OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s",
1326 (unsigned) current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
,
1327 phex_nz ((uintptr_t) current_event
.u
.Exception
.ExceptionRecord
.
1328 ExceptionAddress
, sizeof (uintptr_t))));
1329 ourstatus
->value
.sig
= GDB_SIGNAL_UNKNOWN
;
1333 last_sig
= ourstatus
->value
.sig
;
1338 suspend_one_thread (thread_info
*thread
)
1340 win32_thread_info
*th
= (win32_thread_info
*) thread_target_data (thread
);
1344 if (SuspendThread (th
->h
) == (DWORD
) -1)
1346 DWORD err
= GetLastError ();
1347 OUTMSG (("warning: SuspendThread failed in suspend_one_thread, "
1348 "(error %d): %s\n", (int) err
, strwinerror (err
)));
1356 fake_breakpoint_event (void)
1358 OUTMSG2(("fake_breakpoint_event\n"));
1360 faked_breakpoint
= 1;
1362 memset (¤t_event
, 0, sizeof (current_event
));
1363 current_event
.dwThreadId
= main_thread_id
;
1364 current_event
.dwDebugEventCode
= EXCEPTION_DEBUG_EVENT
;
1365 current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
1366 = EXCEPTION_BREAKPOINT
;
1368 for_each_thread (suspend_one_thread
);
1373 auto_delete_breakpoint (CORE_ADDR stop_pc
)
1379 /* Get the next event from the child. */
1382 get_child_debug_event (struct target_waitstatus
*ourstatus
)
1386 last_sig
= GDB_SIGNAL_0
;
1387 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1389 /* Check if GDB sent us an interrupt request. */
1390 check_remote_input_interrupt_request ();
1392 if (soft_interrupt_requested
)
1394 soft_interrupt_requested
= 0;
1395 fake_breakpoint_event ();
1404 /* WinCE doesn't set an initial breakpoint automatically. To
1405 stop the inferior, we flush all currently pending debug
1406 events -- the thread list and the dll list are always
1407 reported immediatelly without delay, then, we suspend all
1408 threads and pretend we saw a trap at the current PC of the
1411 Contrary to desktop Windows, Windows CE *does* report the dll
1412 names on LOAD_DLL_DEBUG_EVENTs resulting from a
1413 DebugActiveProcess call. This limits the way we can detect
1414 if all the dlls have already been reported. If we get a real
1415 debug event before leaving attaching, the worst that will
1416 happen is the user will see a spurious breakpoint. */
1418 current_event
.dwDebugEventCode
= 0;
1419 if (!WaitForDebugEvent (¤t_event
, 0))
1421 OUTMSG2(("no attach events left\n"));
1422 fake_breakpoint_event ();
1426 OUTMSG2(("got attach event\n"));
1431 /* Keep the wait time low enough for confortable remote
1432 interruption, but high enough so gdbserver doesn't become a
1434 if (!WaitForDebugEvent (¤t_event
, 250))
1436 DWORD e
= GetLastError();
1438 if (e
== ERROR_PIPE_NOT_CONNECTED
)
1440 /* This will happen if the loader fails to succesfully
1441 load the application, e.g., if the main executable
1442 tries to pull in a non-existing export from a
1444 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1445 ourstatus
->value
.integer
= 1;
1455 switch (current_event
.dwDebugEventCode
)
1457 case CREATE_THREAD_DEBUG_EVENT
:
1458 OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT "
1459 "for pid=%u tid=%x)\n",
1460 (unsigned) current_event
.dwProcessId
,
1461 (unsigned) current_event
.dwThreadId
));
1463 /* Record the existence of this thread. */
1464 child_add_thread (current_event
.dwProcessId
,
1465 current_event
.dwThreadId
,
1466 current_event
.u
.CreateThread
.hThread
,
1467 current_event
.u
.CreateThread
.lpThreadLocalBase
);
1470 case EXIT_THREAD_DEBUG_EVENT
:
1471 OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT "
1472 "for pid=%u tid=%x\n",
1473 (unsigned) current_event
.dwProcessId
,
1474 (unsigned) current_event
.dwThreadId
));
1475 child_delete_thread (current_event
.dwProcessId
,
1476 current_event
.dwThreadId
);
1478 current_thread
= get_first_thread ();
1481 case CREATE_PROCESS_DEBUG_EVENT
:
1482 OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT "
1483 "for pid=%u tid=%x\n",
1484 (unsigned) current_event
.dwProcessId
,
1485 (unsigned) current_event
.dwThreadId
));
1486 CloseHandle (current_event
.u
.CreateProcessInfo
.hFile
);
1488 current_process_handle
= current_event
.u
.CreateProcessInfo
.hProcess
;
1489 main_thread_id
= current_event
.dwThreadId
;
1491 /* Add the main thread. */
1492 child_add_thread (current_event
.dwProcessId
,
1494 current_event
.u
.CreateProcessInfo
.hThread
,
1495 current_event
.u
.CreateProcessInfo
.lpThreadLocalBase
);
1500 /* Windows CE doesn't set the initial breakpoint
1501 automatically like the desktop versions of Windows do.
1502 We add it explicitly here. It will be removed as soon as
1504 set_breakpoint_at ((CORE_ADDR
) (long) current_event
.u
1505 .CreateProcessInfo
.lpStartAddress
,
1506 auto_delete_breakpoint
);
1511 case EXIT_PROCESS_DEBUG_EVENT
:
1512 OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT "
1513 "for pid=%u tid=%x\n",
1514 (unsigned) current_event
.dwProcessId
,
1515 (unsigned) current_event
.dwThreadId
));
1516 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1517 ourstatus
->value
.integer
= current_event
.u
.ExitProcess
.dwExitCode
;
1518 child_continue (DBG_CONTINUE
, -1);
1519 CloseHandle (current_process_handle
);
1520 current_process_handle
= NULL
;
1523 case LOAD_DLL_DEBUG_EVENT
:
1524 OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT "
1525 "for pid=%u tid=%x\n",
1526 (unsigned) current_event
.dwProcessId
,
1527 (unsigned) current_event
.dwThreadId
));
1528 CloseHandle (current_event
.u
.LoadDll
.hFile
);
1529 if (! child_initialization_done
)
1533 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1534 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1537 case UNLOAD_DLL_DEBUG_EVENT
:
1538 OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT "
1539 "for pid=%u tid=%x\n",
1540 (unsigned) current_event
.dwProcessId
,
1541 (unsigned) current_event
.dwThreadId
));
1542 if (! child_initialization_done
)
1544 handle_unload_dll ();
1545 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1546 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1549 case EXCEPTION_DEBUG_EVENT
:
1550 OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT "
1551 "for pid=%u tid=%x\n",
1552 (unsigned) current_event
.dwProcessId
,
1553 (unsigned) current_event
.dwThreadId
));
1554 handle_exception (ourstatus
);
1557 case OUTPUT_DEBUG_STRING_EVENT
:
1558 /* A message from the kernel (or Cygwin). */
1559 OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT "
1560 "for pid=%u tid=%x\n",
1561 (unsigned) current_event
.dwProcessId
,
1562 (unsigned) current_event
.dwThreadId
));
1563 handle_output_debug_string ();
1567 OUTMSG2 (("gdbserver: kernel event unknown "
1568 "for pid=%u tid=%x code=%x\n",
1569 (unsigned) current_event
.dwProcessId
,
1570 (unsigned) current_event
.dwThreadId
,
1571 (unsigned) current_event
.dwDebugEventCode
));
1575 ptid
= debug_event_ptid (¤t_event
);
1576 current_thread
= find_thread_ptid (ptid
);
1580 /* Wait for the inferior process to change state.
1581 STATUS will be filled in with a response code to send to GDB.
1582 Returns the signal which caused the process to stop. */
1584 win32_wait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
)
1586 struct regcache
*regcache
;
1588 if (cached_status
.kind
!= TARGET_WAITKIND_IGNORE
)
1590 /* The core always does a wait after creating the inferior, and
1591 do_initial_child_stuff already ran the inferior to the
1592 initial breakpoint (or an exit, if creating the process
1593 fails). Report it now. */
1594 *ourstatus
= cached_status
;
1595 cached_status
.kind
= TARGET_WAITKIND_IGNORE
;
1596 return debug_event_ptid (¤t_event
);
1601 if (!get_child_debug_event (ourstatus
))
1604 switch (ourstatus
->kind
)
1606 case TARGET_WAITKIND_EXITED
:
1607 OUTMSG2 (("Child exited with retcode = %x\n",
1608 ourstatus
->value
.integer
));
1609 win32_clear_inferiors ();
1610 return ptid_t (current_event
.dwProcessId
);
1611 case TARGET_WAITKIND_STOPPED
:
1612 case TARGET_WAITKIND_LOADED
:
1613 OUTMSG2 (("Child Stopped with signal = %d \n",
1614 ourstatus
->value
.sig
));
1616 regcache
= get_thread_regcache (current_thread
, 1);
1617 child_fetch_inferior_registers (regcache
, -1);
1618 return debug_event_ptid (¤t_event
);
1620 OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus
->kind
));
1622 case TARGET_WAITKIND_SPURIOUS
:
1623 /* do nothing, just continue */
1624 child_continue (DBG_CONTINUE
, -1);
1630 /* Fetch registers from the inferior process.
1631 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
1633 win32_fetch_inferior_registers (struct regcache
*regcache
, int regno
)
1635 child_fetch_inferior_registers (regcache
, regno
);
1638 /* Store registers to the inferior process.
1639 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
1641 win32_store_inferior_registers (struct regcache
*regcache
, int regno
)
1643 child_store_inferior_registers (regcache
, regno
);
1646 /* Read memory from the inferior process. This should generally be
1647 called through read_inferior_memory, which handles breakpoint shadowing.
1648 Read LEN bytes at MEMADDR into a buffer at MYADDR. */
1650 win32_read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
1652 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 0, 0) != len
;
1655 /* Write memory to the inferior process. This should generally be
1656 called through write_inferior_memory, which handles breakpoint shadowing.
1657 Write LEN bytes from the buffer at MYADDR to MEMADDR.
1658 Returns 0 on success and errno on failure. */
1660 win32_write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
1663 return child_xfer_memory (memaddr
, (char *) myaddr
, len
, 1, 0) != len
;
1666 /* Send an interrupt request to the inferior process. */
1668 win32_request_interrupt (void)
1670 winapi_DebugBreakProcess DebugBreakProcess
;
1671 winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent
;
1674 HMODULE dll
= GetModuleHandle (_T("COREDLL.DLL"));
1676 HMODULE dll
= GetModuleHandle (_T("KERNEL32.DLL"));
1679 GenerateConsoleCtrlEvent
= GETPROCADDRESS (dll
, GenerateConsoleCtrlEvent
);
1681 if (GenerateConsoleCtrlEvent
!= NULL
1682 && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT
, current_process_id
))
1685 /* GenerateConsoleCtrlEvent can fail if process id being debugged is
1686 not a process group id.
1687 Fallback to XP/Vista 'DebugBreakProcess', which generates a
1688 breakpoint exception in the interior process. */
1690 DebugBreakProcess
= GETPROCADDRESS (dll
, DebugBreakProcess
);
1692 if (DebugBreakProcess
!= NULL
1693 && DebugBreakProcess (current_process_handle
))
1696 /* Last resort, suspend all threads manually. */
1697 soft_interrupt_requested
= 1;
1702 win32_error_to_fileio_error (DWORD err
)
1706 case ERROR_BAD_PATHNAME
:
1707 case ERROR_FILE_NOT_FOUND
:
1708 case ERROR_INVALID_NAME
:
1709 case ERROR_PATH_NOT_FOUND
:
1710 return FILEIO_ENOENT
;
1712 case ERROR_IO_DEVICE
:
1713 case ERROR_OPEN_FAILED
:
1715 case ERROR_INVALID_HANDLE
:
1716 return FILEIO_EBADF
;
1717 case ERROR_ACCESS_DENIED
:
1718 case ERROR_SHARING_VIOLATION
:
1719 return FILEIO_EACCES
;
1720 case ERROR_NOACCESS
:
1721 return FILEIO_EFAULT
;
1723 return FILEIO_EBUSY
;
1724 case ERROR_ALREADY_EXISTS
:
1725 case ERROR_FILE_EXISTS
:
1726 return FILEIO_EEXIST
;
1727 case ERROR_BAD_DEVICE
:
1728 return FILEIO_ENODEV
;
1729 case ERROR_DIRECTORY
:
1730 return FILEIO_ENOTDIR
;
1731 case ERROR_FILENAME_EXCED_RANGE
:
1732 case ERROR_INVALID_DATA
:
1733 case ERROR_INVALID_PARAMETER
:
1734 case ERROR_NEGATIVE_SEEK
:
1735 return FILEIO_EINVAL
;
1736 case ERROR_TOO_MANY_OPEN_FILES
:
1737 return FILEIO_EMFILE
;
1738 case ERROR_HANDLE_DISK_FULL
:
1739 case ERROR_DISK_FULL
:
1740 return FILEIO_ENOSPC
;
1741 case ERROR_WRITE_PROTECT
:
1742 return FILEIO_EROFS
;
1743 case ERROR_NOT_SUPPORTED
:
1744 return FILEIO_ENOSYS
;
1747 return FILEIO_EUNKNOWN
;
1751 wince_hostio_last_error (char *buf
)
1753 DWORD winerr
= GetLastError ();
1754 int fileio_err
= win32_error_to_fileio_error (winerr
);
1755 sprintf (buf
, "F-1,%x", fileio_err
);
1759 /* Write Windows OS Thread Information Block address. */
1762 win32_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1764 win32_thread_info
*th
;
1765 th
= thread_rec (ptid
, 0);
1769 *addr
= th
->thread_local_base
;
1773 /* Implementation of the target_ops method "sw_breakpoint_from_kind". */
1775 static const gdb_byte
*
1776 win32_sw_breakpoint_from_kind (int kind
, int *size
)
1778 *size
= the_low_target
.breakpoint_len
;
1779 return the_low_target
.breakpoint
;
1782 static struct target_ops win32_target_ops
= {
1783 win32_create_inferior
,
1784 NULL
, /* post_create_inferior */
1793 win32_fetch_inferior_registers
,
1794 win32_store_inferior_registers
,
1795 NULL
, /* prepare_to_access_memory */
1796 NULL
, /* done_accessing_memory */
1797 win32_read_inferior_memory
,
1798 win32_write_inferior_memory
,
1799 NULL
, /* lookup_symbols */
1800 win32_request_interrupt
,
1801 NULL
, /* read_auxv */
1802 win32_supports_z_point_type
,
1805 NULL
, /* stopped_by_sw_breakpoint */
1806 NULL
, /* supports_stopped_by_sw_breakpoint */
1807 NULL
, /* stopped_by_hw_breakpoint */
1808 NULL
, /* supports_stopped_by_hw_breakpoint */
1809 target_can_do_hardware_single_step
,
1810 win32_stopped_by_watchpoint
,
1811 win32_stopped_data_address
,
1812 NULL
, /* read_offsets */
1813 NULL
, /* get_tls_address */
1814 NULL
, /* qxfer_spu */
1816 wince_hostio_last_error
,
1818 hostio_last_error_from_errno
,
1820 NULL
, /* qxfer_osdata */
1821 NULL
, /* qxfer_siginfo */
1822 NULL
, /* supports_non_stop */
1824 NULL
, /* start_non_stop */
1825 NULL
, /* supports_multi_process */
1826 NULL
, /* supports_fork_events */
1827 NULL
, /* supports_vfork_events */
1828 NULL
, /* supports_exec_events */
1829 NULL
, /* handle_new_gdb_connection */
1830 NULL
, /* handle_monitor_command */
1831 NULL
, /* core_of_thread */
1832 NULL
, /* read_loadmap */
1833 NULL
, /* process_qsupported */
1834 NULL
, /* supports_tracepoints */
1836 NULL
, /* write_pc */
1837 NULL
, /* thread_stopped */
1838 win32_get_tib_address
,
1839 NULL
, /* pause_all */
1840 NULL
, /* unpause_all */
1841 NULL
, /* stabilize_threads */
1842 NULL
, /* install_fast_tracepoint_jump_pad */
1843 NULL
, /* emit_ops */
1844 NULL
, /* supports_disable_randomization */
1845 NULL
, /* get_min_fast_tracepoint_insn_len */
1846 NULL
, /* qxfer_libraries_svr4 */
1847 NULL
, /* support_agent */
1848 NULL
, /* enable_btrace */
1849 NULL
, /* disable_btrace */
1850 NULL
, /* read_btrace */
1851 NULL
, /* read_btrace_conf */
1852 NULL
, /* supports_range_stepping */
1853 NULL
, /* pid_to_exec_file */
1854 NULL
, /* multifs_open */
1855 NULL
, /* multifs_unlink */
1856 NULL
, /* multifs_readlink */
1857 NULL
, /* breakpoint_kind_from_pc */
1858 win32_sw_breakpoint_from_kind
,
1861 /* Initialize the Win32 backend. */
1863 initialize_low (void)
1865 set_target_ops (&win32_target_ops
);
1866 the_low_target
.arch_setup ();