1 /* Target-vector operations for controlling windows child processes, for GDB.
3 Copyright (C) 1995-2020 Free Software Foundation, Inc.
5 Contributed by Cygnus Solutions, A Red Hat Company.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* Originally by Steve Chamberlain, sac@cygnus.com */
25 #include "frame.h" /* required by inferior.h */
31 #include "completer.h"
35 #include <sys/types.h>
42 #include <sys/cygwin.h>
43 #include <cygwin/version.h>
48 #include "filenames.h"
52 #include "gdb_obstack.h"
53 #include "gdbthread.h"
59 #include "xml-support.h"
62 #include "i386-tdep.h"
63 #include "i387-tdep.h"
65 #include "windows-tdep.h"
66 #include "windows-nat.h"
68 #include "complaints.h"
69 #include "inf-child.h"
70 #include "gdbsupport/gdb_tilde_expand.h"
71 #include "gdbsupport/pathstuff.h"
72 #include "gdbsupport/gdb_wait.h"
73 #include "nat/windows-nat.h"
75 #define STATUS_WX86_BREAKPOINT 0x4000001F
76 #define STATUS_WX86_SINGLE_STEP 0x4000001E
78 using namespace windows_nat
;
80 #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
81 #define DebugActiveProcessStop dyn_DebugActiveProcessStop
82 #define DebugBreakProcess dyn_DebugBreakProcess
83 #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
84 #define EnumProcessModules dyn_EnumProcessModules
85 #define EnumProcessModulesEx dyn_EnumProcessModulesEx
86 #define GetModuleInformation dyn_GetModuleInformation
87 #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
88 #define OpenProcessToken dyn_OpenProcessToken
89 #define GetConsoleFontSize dyn_GetConsoleFontSize
90 #define GetCurrentConsoleFont dyn_GetCurrentConsoleFont
91 #define Wow64SuspendThread dyn_Wow64SuspendThread
92 #define Wow64GetThreadContext dyn_Wow64GetThreadContext
93 #define Wow64SetThreadContext dyn_Wow64SetThreadContext
94 #define Wow64GetThreadSelectorEntry dyn_Wow64GetThreadSelectorEntry
96 typedef BOOL
WINAPI (AdjustTokenPrivileges_ftype
) (HANDLE
, BOOL
,
98 DWORD
, PTOKEN_PRIVILEGES
,
100 static AdjustTokenPrivileges_ftype
*AdjustTokenPrivileges
;
102 typedef BOOL
WINAPI (DebugActiveProcessStop_ftype
) (DWORD
);
103 static DebugActiveProcessStop_ftype
*DebugActiveProcessStop
;
105 typedef BOOL
WINAPI (DebugBreakProcess_ftype
) (HANDLE
);
106 static DebugBreakProcess_ftype
*DebugBreakProcess
;
108 typedef BOOL
WINAPI (DebugSetProcessKillOnExit_ftype
) (BOOL
);
109 static DebugSetProcessKillOnExit_ftype
*DebugSetProcessKillOnExit
;
111 typedef BOOL
WINAPI (EnumProcessModules_ftype
) (HANDLE
, HMODULE
*, DWORD
,
113 static EnumProcessModules_ftype
*EnumProcessModules
;
116 typedef BOOL
WINAPI (EnumProcessModulesEx_ftype
) (HANDLE
, HMODULE
*, DWORD
,
118 static EnumProcessModulesEx_ftype
*EnumProcessModulesEx
;
121 typedef BOOL
WINAPI (GetModuleInformation_ftype
) (HANDLE
, HMODULE
,
122 LPMODULEINFO
, DWORD
);
123 static GetModuleInformation_ftype
*GetModuleInformation
;
125 typedef BOOL
WINAPI (LookupPrivilegeValueA_ftype
) (LPCSTR
, LPCSTR
, PLUID
);
126 static LookupPrivilegeValueA_ftype
*LookupPrivilegeValueA
;
128 typedef BOOL
WINAPI (OpenProcessToken_ftype
) (HANDLE
, DWORD
, PHANDLE
);
129 static OpenProcessToken_ftype
*OpenProcessToken
;
131 typedef BOOL
WINAPI (GetCurrentConsoleFont_ftype
) (HANDLE
, BOOL
,
132 CONSOLE_FONT_INFO
*);
133 static GetCurrentConsoleFont_ftype
*GetCurrentConsoleFont
;
135 typedef COORD
WINAPI (GetConsoleFontSize_ftype
) (HANDLE
, DWORD
);
136 static GetConsoleFontSize_ftype
*GetConsoleFontSize
;
139 typedef DWORD
WINAPI (Wow64SuspendThread_ftype
) (HANDLE
);
140 static Wow64SuspendThread_ftype
*Wow64SuspendThread
;
142 typedef BOOL
WINAPI (Wow64GetThreadContext_ftype
) (HANDLE
, PWOW64_CONTEXT
);
143 static Wow64GetThreadContext_ftype
*Wow64GetThreadContext
;
145 typedef BOOL
WINAPI (Wow64SetThreadContext_ftype
) (HANDLE
,
146 const WOW64_CONTEXT
*);
147 static Wow64SetThreadContext_ftype
*Wow64SetThreadContext
;
149 typedef BOOL
WINAPI (Wow64GetThreadSelectorEntry_ftype
) (HANDLE
, DWORD
,
151 static Wow64GetThreadSelectorEntry_ftype
*Wow64GetThreadSelectorEntry
;
156 #undef GetModuleFileNameEx
159 # define __PMAX (MAX_PATH + 1)
160 typedef DWORD
WINAPI (GetModuleFileNameEx_ftype
) (HANDLE
, HMODULE
, LPSTR
, DWORD
);
161 static GetModuleFileNameEx_ftype
*GetModuleFileNameEx
;
162 # define STARTUPINFO STARTUPINFOA
163 # define CreateProcess CreateProcessA
164 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
165 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
167 # define __PMAX PATH_MAX
168 /* The starting and ending address of the cygwin1.dll text segment. */
169 static CORE_ADDR cygwin_load_start
;
170 static CORE_ADDR cygwin_load_end
;
172 typedef wchar_t cygwin_buf_t
;
173 typedef DWORD
WINAPI (GetModuleFileNameEx_ftype
) (HANDLE
, HMODULE
,
175 static GetModuleFileNameEx_ftype
*GetModuleFileNameEx
;
176 # define STARTUPINFO STARTUPINFOW
177 # define CreateProcess CreateProcessW
178 # define GetModuleFileNameEx_name "GetModuleFileNameExW"
179 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW
182 static int have_saved_context
; /* True if we've saved context from a
185 static CONTEXT saved_context
; /* Contains the saved context from a
189 /* If we're not using the old Cygwin header file set, define the
190 following which never should have been in the generic Win32 API
191 headers in the first place since they were our own invention... */
192 #ifndef _GNU_H_WINDOWS_H
195 FLAG_TRACE_BIT
= 0x100,
199 #ifndef CONTEXT_EXTENDED_REGISTERS
200 /* This macro is only defined on ia32. It only makes sense on this target,
201 so define it as zero if not already defined. */
202 #define CONTEXT_EXTENDED_REGISTERS 0
205 #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \
206 | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \
207 | CONTEXT_EXTENDED_REGISTERS
209 static uintptr_t dr
[8];
210 static int debug_registers_changed
;
211 static int debug_registers_used
;
213 static int windows_initialization_done
;
214 #define DR6_CLEAR_VALUE 0xffff0ff0
216 /* The exception thrown by a program to tell the debugger the name of
217 a thread. The exception record contains an ID of a thread and a
218 name to give it. This exception has no documented name, but MSDN
219 dubs it "MS_VC_EXCEPTION" in one code example. */
220 #define MS_VC_EXCEPTION 0x406d1388
224 HANDLE_EXCEPTION_UNHANDLED
= 0,
225 HANDLE_EXCEPTION_HANDLED
,
226 HANDLE_EXCEPTION_IGNORED
227 } handle_exception_result
;
229 /* The string sent by cygwin when it processes a signal.
230 FIXME: This should be in a cygwin include file. */
231 #ifndef _CYGWIN_SIGNAL_STRING
232 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
235 #define CHECK(x) check (x, __FILE__,__LINE__)
236 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
237 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
238 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
239 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
241 static void cygwin_set_dr (int i
, CORE_ADDR addr
);
242 static void cygwin_set_dr7 (unsigned long val
);
243 static CORE_ADDR
cygwin_get_dr (int i
);
244 static unsigned long cygwin_get_dr6 (void);
245 static unsigned long cygwin_get_dr7 (void);
247 static std::vector
<windows_thread_info
*> thread_list
;
249 /* Counts of things. */
250 static int exception_count
= 0;
251 static int event_count
= 0;
252 static int saw_create
;
253 static int open_process_used
= 0;
255 static bool wow64_process
= false;
256 static bool ignore_first_breakpoint
= false;
260 static bool new_console
= false;
262 static bool cygwin_exceptions
= false;
264 static bool new_group
= true;
265 static bool debug_exec
= false; /* show execution */
266 static bool debug_events
= false; /* show events from kernel */
267 static bool debug_memory
= false; /* show target memory accesses */
268 static bool debug_exceptions
= false; /* show target exceptions */
269 static bool useshell
= false; /* use shell for subprocesses */
271 /* This vector maps GDB's idea of a register's number into an offset
272 in the windows exception context vector.
274 It also contains the bit mask needed to load the register in question.
276 The contents of this table can only be computed by the units
277 that provide CPU-specific support for Windows native debugging.
278 These units should set the table by calling
279 windows_set_context_register_offsets.
281 One day we could read a reg, we could inspect the context we
282 already have loaded, if it doesn't have the bit set that we need,
283 we read that set of registers in using GetThreadContext. If the
284 context already contains what we need, we just unpack it. Then to
285 write a register, first we have to ensure that the context contains
286 the other regs of the group, and then we copy the info in and set
289 static const int *mappings
;
291 /* The function to use in order to determine whether a register is
292 a segment register or not. */
293 static segment_register_p_ftype
*segment_register_p
;
295 /* See windows_nat_target::resume to understand why this is commented
298 /* This vector maps the target's idea of an exception (extracted
299 from the DEBUG_EVENT structure) to GDB's idea. */
301 struct xlate_exception
307 static const struct xlate_exception xlate
[] =
309 {EXCEPTION_ACCESS_VIOLATION
, GDB_SIGNAL_SEGV
},
310 {STATUS_STACK_OVERFLOW
, GDB_SIGNAL_SEGV
},
311 {EXCEPTION_BREAKPOINT
, GDB_SIGNAL_TRAP
},
312 {DBG_CONTROL_C
, GDB_SIGNAL_INT
},
313 {EXCEPTION_SINGLE_STEP
, GDB_SIGNAL_TRAP
},
314 {STATUS_FLOAT_DIVIDE_BY_ZERO
, GDB_SIGNAL_FPE
}
319 struct windows_nat_target final
: public x86_nat_target
<inf_child_target
>
321 void close () override
;
323 void attach (const char *, int) override
;
325 bool attach_no_wait () override
328 void detach (inferior
*, int) override
;
330 void resume (ptid_t
, int , enum gdb_signal
) override
;
332 ptid_t
wait (ptid_t
, struct target_waitstatus
*, int) override
;
334 void fetch_registers (struct regcache
*, int) override
;
335 void store_registers (struct regcache
*, int) override
;
337 bool stopped_by_sw_breakpoint () override
339 return current_windows_thread
->stopped_at_software_breakpoint
;
342 bool supports_stopped_by_sw_breakpoint () override
347 enum target_xfer_status
xfer_partial (enum target_object object
,
350 const gdb_byte
*writebuf
,
351 ULONGEST offset
, ULONGEST len
,
352 ULONGEST
*xfered_len
) override
;
354 void files_info () override
;
356 void kill () override
;
358 void create_inferior (const char *, const std::string
&,
359 char **, int) override
;
361 void mourn_inferior () override
;
363 bool thread_alive (ptid_t ptid
) override
;
365 std::string
pid_to_str (ptid_t
) override
;
367 void interrupt () override
;
369 char *pid_to_exec_file (int pid
) override
;
371 ptid_t
get_ada_task_ptid (long lwp
, long thread
) override
;
373 bool get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
) override
;
375 const char *thread_name (struct thread_info
*) override
;
377 int get_windows_debug_event (int pid
, struct target_waitstatus
*ourstatus
);
380 static windows_nat_target the_windows_nat_target
;
382 /* Set the MAPPINGS static global to OFFSETS.
383 See the description of MAPPINGS for more details. */
386 windows_set_context_register_offsets (const int *offsets
)
391 /* Set the function that should be used by this module to determine
392 whether a given register is a segment register or not. */
395 windows_set_segment_register_p (segment_register_p_ftype
*fun
)
397 segment_register_p
= fun
;
401 check (BOOL ok
, const char *file
, int line
)
404 printf_filtered ("error return %s:%d was %u\n", file
, line
,
405 (unsigned) GetLastError ());
408 /* See nat/windows-nat.h. */
410 windows_thread_info
*
411 windows_nat::thread_rec (ptid_t ptid
, thread_disposition_type disposition
)
413 for (windows_thread_info
*th
: thread_list
)
414 if (th
->tid
== ptid
.lwp ())
420 case DONT_INVALIDATE_CONTEXT
:
423 case INVALIDATE_CONTEXT
:
424 if (ptid
.lwp () != current_event
.dwThreadId
)
426 th
->reload_context
= true;
429 th
->reload_context
= true;
440 /* Add a thread to the thread list.
442 PTID is the ptid of the thread to be added.
443 H is its Windows handle.
444 TLB is its thread local base.
445 MAIN_THREAD_P should be true if the thread to be added is
446 the main thread, false otherwise. */
448 static windows_thread_info
*
449 windows_add_thread (ptid_t ptid
, HANDLE h
, void *tlb
, bool main_thread_p
)
451 windows_thread_info
*th
;
453 gdb_assert (ptid
.lwp () != 0);
455 if ((th
= thread_rec (ptid
, DONT_INVALIDATE_CONTEXT
)))
458 CORE_ADDR base
= (CORE_ADDR
) (uintptr_t) tlb
;
460 /* For WOW64 processes, this is actually the pointer to the 64bit TIB,
461 and the 32bit TIB is exactly 2 pages after it. */
465 th
= new windows_thread_info (ptid
.lwp (), h
, base
);
466 thread_list
.push_back (th
);
468 /* Add this new thread to the list of threads.
470 To be consistent with what's done on other platforms, we add
471 the main thread silently (in reality, this thread is really
472 more of a process to the user than a thread). */
474 add_thread_silent (&the_windows_nat_target
, ptid
);
476 add_thread (&the_windows_nat_target
, ptid
);
478 /* Set the debug registers for the new thread if they are used. */
479 if (debug_registers_used
)
484 /* Only change the value of the debug registers. */
485 th
->wow64_context
.ContextFlags
= CONTEXT_DEBUG_REGISTERS
;
486 CHECK (Wow64GetThreadContext (th
->h
, &th
->wow64_context
));
487 th
->wow64_context
.Dr0
= dr
[0];
488 th
->wow64_context
.Dr1
= dr
[1];
489 th
->wow64_context
.Dr2
= dr
[2];
490 th
->wow64_context
.Dr3
= dr
[3];
491 th
->wow64_context
.Dr6
= DR6_CLEAR_VALUE
;
492 th
->wow64_context
.Dr7
= dr
[7];
493 CHECK (Wow64SetThreadContext (th
->h
, &th
->wow64_context
));
494 th
->wow64_context
.ContextFlags
= 0;
499 /* Only change the value of the debug registers. */
500 th
->context
.ContextFlags
= CONTEXT_DEBUG_REGISTERS
;
501 CHECK (GetThreadContext (th
->h
, &th
->context
));
502 th
->context
.Dr0
= dr
[0];
503 th
->context
.Dr1
= dr
[1];
504 th
->context
.Dr2
= dr
[2];
505 th
->context
.Dr3
= dr
[3];
506 th
->context
.Dr6
= DR6_CLEAR_VALUE
;
507 th
->context
.Dr7
= dr
[7];
508 CHECK (SetThreadContext (th
->h
, &th
->context
));
509 th
->context
.ContextFlags
= 0;
515 /* Clear out any old thread list and reinitialize it to a
518 windows_init_thread_list (void)
520 DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
523 for (windows_thread_info
*here
: thread_list
)
526 thread_list
.clear ();
529 /* Delete a thread from the list of threads.
531 PTID is the ptid of the thread to be deleted.
532 EXIT_CODE is the thread's exit code.
533 MAIN_THREAD_P should be true if the thread to be deleted is
534 the main thread, false otherwise. */
537 windows_delete_thread (ptid_t ptid
, DWORD exit_code
, bool main_thread_p
)
541 gdb_assert (ptid
.lwp () != 0);
545 /* Emit a notification about the thread being deleted.
547 Note that no notification was printed when the main thread
548 was created, and thus, unless in verbose mode, we should be
549 symmetrical, and avoid that notification for the main thread
553 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid
).c_str ());
554 else if (print_thread_events
&& !main_thread_p
)
555 printf_unfiltered (_("[%s exited with code %u]\n"),
556 target_pid_to_str (ptid
).c_str (),
557 (unsigned) exit_code
);
559 delete_thread (find_thread_ptid (&the_windows_nat_target
, ptid
));
561 auto iter
= std::find_if (thread_list
.begin (), thread_list
.end (),
562 [=] (windows_thread_info
*th
)
564 return th
->tid
== id
;
567 if (iter
!= thread_list
.end ())
570 thread_list
.erase (iter
);
574 /* Fetches register number R from the given windows_thread_info,
575 and supplies its value to the given regcache.
577 This function assumes that R is non-negative. A failed assertion
578 is raised if that is not true.
580 This function assumes that TH->RELOAD_CONTEXT is not set, meaning
581 that the windows_thread_info has an up-to-date context. A failed
582 assertion is raised if that assumption is violated. */
585 windows_fetch_one_register (struct regcache
*regcache
,
586 windows_thread_info
*th
, int r
)
589 gdb_assert (!th
->reload_context
);
591 char *context_ptr
= (char *) &th
->context
;
594 context_ptr
= (char *) &th
->wow64_context
;
597 char *context_offset
= context_ptr
+ mappings
[r
];
598 struct gdbarch
*gdbarch
= regcache
->arch ();
599 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
601 gdb_assert (!gdbarch_read_pc_p (gdbarch
));
602 gdb_assert (gdbarch_pc_regnum (gdbarch
) >= 0);
603 gdb_assert (!gdbarch_write_pc_p (gdbarch
));
605 if (r
== I387_FISEG_REGNUM (tdep
))
607 long l
= *((long *) context_offset
) & 0xffff;
608 regcache
->raw_supply (r
, (char *) &l
);
610 else if (r
== I387_FOP_REGNUM (tdep
))
612 long l
= (*((long *) context_offset
) >> 16) & ((1 << 11) - 1);
613 regcache
->raw_supply (r
, (char *) &l
);
615 else if (segment_register_p (r
))
617 /* GDB treats segment registers as 32bit registers, but they are
618 in fact only 16 bits long. Make sure we do not read extra
619 bits from our source buffer. */
620 long l
= *((long *) context_offset
) & 0xffff;
621 regcache
->raw_supply (r
, (char *) &l
);
625 if (th
->stopped_at_software_breakpoint
626 && r
== gdbarch_pc_regnum (gdbarch
))
628 int size
= register_size (gdbarch
, r
);
632 memcpy (&value
, context_offset
, size
);
633 value
-= gdbarch_decr_pc_after_break (gdbarch
);
634 memcpy (context_offset
, &value
, size
);
638 gdb_assert (size
== 8);
640 memcpy (&value
, context_offset
, size
);
641 value
-= gdbarch_decr_pc_after_break (gdbarch
);
642 memcpy (context_offset
, &value
, size
);
645 regcache
->raw_supply (r
, context_offset
);
650 windows_nat_target::fetch_registers (struct regcache
*regcache
, int r
)
652 windows_thread_info
*th
= thread_rec (regcache
->ptid (), INVALIDATE_CONTEXT
);
654 /* Check if TH exists. Windows sometimes uses a non-existent
655 thread id in its events. */
659 if (th
->reload_context
)
662 if (have_saved_context
)
664 /* Lie about where the program actually is stopped since
665 cygwin has informed us that we should consider the signal
666 to have occurred at another location which is stored in
668 memcpy (&th
->context
, &saved_context
,
669 __COPY_CONTEXT_SIZE
);
670 have_saved_context
= 0;
677 th
->wow64_context
.ContextFlags
= CONTEXT_DEBUGGER_DR
;
678 CHECK (Wow64GetThreadContext (th
->h
, &th
->wow64_context
));
679 /* Copy dr values from that thread.
680 But only if there were not modified since last stop.
682 if (!debug_registers_changed
)
684 dr
[0] = th
->wow64_context
.Dr0
;
685 dr
[1] = th
->wow64_context
.Dr1
;
686 dr
[2] = th
->wow64_context
.Dr2
;
687 dr
[3] = th
->wow64_context
.Dr3
;
688 dr
[6] = th
->wow64_context
.Dr6
;
689 dr
[7] = th
->wow64_context
.Dr7
;
695 th
->context
.ContextFlags
= CONTEXT_DEBUGGER_DR
;
696 CHECK (GetThreadContext (th
->h
, &th
->context
));
697 /* Copy dr values from that thread.
698 But only if there were not modified since last stop.
700 if (!debug_registers_changed
)
702 dr
[0] = th
->context
.Dr0
;
703 dr
[1] = th
->context
.Dr1
;
704 dr
[2] = th
->context
.Dr2
;
705 dr
[3] = th
->context
.Dr3
;
706 dr
[6] = th
->context
.Dr6
;
707 dr
[7] = th
->context
.Dr7
;
710 th
->reload_context
= false;
714 for (r
= 0; r
< gdbarch_num_regs (regcache
->arch()); r
++)
715 windows_fetch_one_register (regcache
, th
, r
);
717 windows_fetch_one_register (regcache
, th
, r
);
720 /* Collect the register number R from the given regcache, and store
721 its value into the corresponding area of the given thread's context.
723 This function assumes that R is non-negative. A failed assertion
724 assertion is raised if that is not true. */
727 windows_store_one_register (const struct regcache
*regcache
,
728 windows_thread_info
*th
, int r
)
732 char *context_ptr
= (char *) &th
->context
;
735 context_ptr
= (char *) &th
->wow64_context
;
738 regcache
->raw_collect (r
, context_ptr
+ mappings
[r
]);
741 /* Store a new register value into the context of the thread tied to
745 windows_nat_target::store_registers (struct regcache
*regcache
, int r
)
747 windows_thread_info
*th
= thread_rec (regcache
->ptid (), INVALIDATE_CONTEXT
);
749 /* Check if TH exists. Windows sometimes uses a non-existent
750 thread id in its events. */
755 for (r
= 0; r
< gdbarch_num_regs (regcache
->arch ()); r
++)
756 windows_store_one_register (regcache
, th
, r
);
758 windows_store_one_register (regcache
, th
, r
);
761 /* Maintain a linked list of "so" information. */
762 struct lm_info_windows
: public lm_info_base
764 LPVOID load_addr
= 0;
765 CORE_ADDR text_offset
= 0;
768 static struct so_list solib_start
, *solib_end
;
770 static struct so_list
*
771 windows_make_so (const char *name
, LPVOID load_addr
)
778 WIN32_FIND_DATA w32_fd
;
779 HANDLE h
= FindFirstFile(name
, &w32_fd
);
781 if (h
== INVALID_HANDLE_VALUE
)
787 if (GetCurrentDirectory (MAX_PATH
+ 1, cwd
))
789 p
= strrchr (buf
, '\\');
792 SetCurrentDirectory (buf
);
793 GetFullPathName (w32_fd
.cFileName
, MAX_PATH
, buf
, &p
);
794 SetCurrentDirectory (cwd
);
797 if (strcasecmp (buf
, "ntdll.dll") == 0)
799 GetSystemDirectory (buf
, sizeof (buf
));
800 strcat (buf
, "\\ntdll.dll");
803 cygwin_buf_t buf
[__PMAX
];
806 if (access (name
, F_OK
) != 0)
808 if (strcasecmp (name
, "ntdll.dll") == 0)
811 GetSystemDirectoryW (buf
, sizeof (buf
) / sizeof (wchar_t));
812 wcscat (buf
, L
"\\ntdll.dll");
816 GetSystemDirectoryA (buf
, sizeof (buf
) / sizeof (wchar_t));
817 strcat (buf
, "\\ntdll.dll");
822 so
= XCNEW (struct so_list
);
823 lm_info_windows
*li
= new lm_info_windows
;
825 li
->load_addr
= load_addr
;
826 strcpy (so
->so_original_name
, name
);
828 strcpy (so
->so_name
, buf
);
831 cygwin_conv_path (CCP_WIN_W_TO_POSIX
, buf
, so
->so_name
,
832 SO_NAME_MAX_PATH_SIZE
);
835 char *rname
= realpath (name
, NULL
);
836 if (rname
&& strlen (rname
) < SO_NAME_MAX_PATH_SIZE
)
838 strcpy (so
->so_name
, rname
);
842 error (_("dll path too long"));
844 /* Record cygwin1.dll .text start/end. */
845 p
= strchr (so
->so_name
, '\0') - (sizeof ("/cygwin1.dll") - 1);
846 if (p
>= so
->so_name
&& strcasecmp (p
, "/cygwin1.dll") == 0)
848 asection
*text
= NULL
;
850 gdb_bfd_ref_ptr
abfd (gdb_bfd_open (so
->so_name
, "pei-i386", -1));
855 if (bfd_check_format (abfd
.get (), bfd_object
))
856 text
= bfd_get_section_by_name (abfd
.get (), ".text");
861 /* The symbols in a dll are offset by 0x1000, which is the
862 offset from 0 of the first byte in an image - because of the
863 file header and the section alignment. */
864 cygwin_load_start
= (CORE_ADDR
) (uintptr_t) ((char *)
866 cygwin_load_end
= cygwin_load_start
+ bfd_section_size (text
);
873 /* Handle a DLL load event, and return 1.
875 This function assumes that this event did not occur during inferior
876 initialization, where their event info may be incomplete (see
877 do_initial_windows_stuff and windows_add_all_dlls for more info
878 on how we handle DLL loading during that phase). */
883 LOAD_DLL_DEBUG_INFO
*event
= ¤t_event
.u
.LoadDll
;
884 const char *dll_name
;
886 /* Try getting the DLL name via the lpImageName field of the event.
887 Note that Microsoft documents this fields as strictly optional,
888 in the sense that it might be NULL. And the first DLL event in
889 particular is explicitly documented as "likely not pass[ed]"
890 (source: MSDN LOAD_DLL_DEBUG_INFO structure). */
891 dll_name
= get_image_name (current_process_handle
,
892 event
->lpImageName
, event
->fUnicode
);
896 solib_end
->next
= windows_make_so (dll_name
, event
->lpBaseOfDll
);
897 solib_end
= solib_end
->next
;
899 lm_info_windows
*li
= (lm_info_windows
*) solib_end
->lm_info
;
901 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end
->so_name
,
902 host_address_to_string (li
->load_addr
)));
906 windows_free_so (struct so_list
*so
)
908 lm_info_windows
*li
= (lm_info_windows
*) so
->lm_info
;
914 /* Handle a DLL unload event.
915 Return 1 if successful, or zero otherwise.
917 This function assumes that this event did not occur during inferior
918 initialization, where their event info may be incomplete (see
919 do_initial_windows_stuff and windows_add_all_dlls for more info
920 on how we handle DLL loading during that phase). */
925 LPVOID lpBaseOfDll
= current_event
.u
.UnloadDll
.lpBaseOfDll
;
928 for (so
= &solib_start
; so
->next
!= NULL
; so
= so
->next
)
930 lm_info_windows
*li_next
= (lm_info_windows
*) so
->next
->lm_info
;
932 if (li_next
->load_addr
== lpBaseOfDll
)
934 struct so_list
*sodel
= so
->next
;
936 so
->next
= sodel
->next
;
939 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel
->so_name
));
941 windows_free_so (sodel
);
946 /* We did not find any DLL that was previously loaded at this address,
947 so register a complaint. We do not report an error, because we have
948 observed that this may be happening under some circumstances. For
949 instance, running 32bit applications on x64 Windows causes us to receive
950 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these
951 events are apparently caused by the WOW layer, the interface between
952 32bit and 64bit worlds). */
953 complaint (_("dll starting at %s not found."),
954 host_address_to_string (lpBaseOfDll
));
957 /* Call FUNC wrapped in a TRY/CATCH that swallows all GDB
961 catch_errors (void (*func
) ())
967 catch (const gdb_exception
&ex
)
969 exception_print (gdb_stderr
, ex
);
973 /* Clear list of loaded DLLs. */
975 windows_clear_solib (void)
979 for (so
= solib_start
.next
; so
; so
= solib_start
.next
)
981 solib_start
.next
= so
->next
;
982 windows_free_so (so
);
985 solib_end
= &solib_start
;
989 signal_event_command (const char *args
, int from_tty
)
991 uintptr_t event_id
= 0;
992 char *endargs
= NULL
;
995 error (_("signal-event requires an argument (integer event id)"));
997 event_id
= strtoumax (args
, &endargs
, 10);
999 if ((errno
== ERANGE
) || (event_id
== 0) || (event_id
> UINTPTR_MAX
) ||
1000 ((HANDLE
) event_id
== INVALID_HANDLE_VALUE
))
1001 error (_("Failed to convert `%s' to event id"), args
);
1003 SetEvent ((HANDLE
) event_id
);
1004 CloseHandle ((HANDLE
) event_id
);
1007 /* See nat/windows-nat.h. */
1010 windows_nat::handle_output_debug_string (struct target_waitstatus
*ourstatus
)
1012 gdb::unique_xmalloc_ptr
<char> s
;
1015 if (!target_read_string
1016 ((CORE_ADDR
) (uintptr_t) current_event
.u
.DebugString
.lpDebugStringData
,
1018 || !s
|| !*(s
.get ()))
1019 /* nothing to do */;
1020 else if (!startswith (s
.get (), _CYGWIN_SIGNAL_STRING
))
1023 if (!startswith (s
.get (), "cYg"))
1026 char *p
= strchr (s
.get (), '\0');
1028 if (p
> s
.get () && *--p
== '\n')
1030 warning (("%s"), s
.get ());
1036 /* Got a cygwin signal marker. A cygwin signal is followed by
1037 the signal number itself and then optionally followed by the
1038 thread id and address to saved context within the DLL. If
1039 these are supplied, then the given thread is assumed to have
1040 issued the signal and the context from the thread is assumed
1041 to be stored at the given address in the inferior. Tell gdb
1042 to treat this like a real signal. */
1044 int sig
= strtol (s
.get () + sizeof (_CYGWIN_SIGNAL_STRING
) - 1, &p
, 0);
1045 gdb_signal gotasig
= gdb_signal_from_host (sig
);
1047 ourstatus
->value
.sig
= gotasig
;
1053 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1054 retval
= strtoul (p
, &p
, 0);
1056 retval
= current_event
.dwThreadId
;
1057 else if ((x
= (LPCVOID
) (uintptr_t) strtoull (p
, NULL
, 0))
1058 && ReadProcessMemory (current_process_handle
, x
,
1060 __COPY_CONTEXT_SIZE
, &n
)
1061 && n
== __COPY_CONTEXT_SIZE
)
1062 have_saved_context
= 1;
1071 display_selector (HANDLE thread
, DWORD sel
)
1077 ret
= Wow64GetThreadSelectorEntry (thread
, sel
, &info
);
1080 ret
= GetThreadSelectorEntry (thread
, sel
, &info
);
1084 printf_filtered ("0x%03x: ", (unsigned) sel
);
1085 if (!info
.HighWord
.Bits
.Pres
)
1087 puts_filtered ("Segment not present\n");
1090 base
= (info
.HighWord
.Bits
.BaseHi
<< 24) +
1091 (info
.HighWord
.Bits
.BaseMid
<< 16)
1093 limit
= (info
.HighWord
.Bits
.LimitHi
<< 16) + info
.LimitLow
;
1094 if (info
.HighWord
.Bits
.Granularity
)
1095 limit
= (limit
<< 12) | 0xfff;
1096 printf_filtered ("base=0x%08x limit=0x%08x", base
, limit
);
1097 if (info
.HighWord
.Bits
.Default_Big
)
1098 puts_filtered(" 32-bit ");
1100 puts_filtered(" 16-bit ");
1101 switch ((info
.HighWord
.Bits
.Type
& 0xf) >> 1)
1104 puts_filtered ("Data (Read-Only, Exp-up");
1107 puts_filtered ("Data (Read/Write, Exp-up");
1110 puts_filtered ("Unused segment (");
1113 puts_filtered ("Data (Read/Write, Exp-down");
1116 puts_filtered ("Code (Exec-Only, N.Conf");
1119 puts_filtered ("Code (Exec/Read, N.Conf");
1122 puts_filtered ("Code (Exec-Only, Conf");
1125 puts_filtered ("Code (Exec/Read, Conf");
1128 printf_filtered ("Unknown type 0x%lx",
1129 (unsigned long) info
.HighWord
.Bits
.Type
);
1131 if ((info
.HighWord
.Bits
.Type
& 0x1) == 0)
1132 puts_filtered(", N.Acc");
1133 puts_filtered (")\n");
1134 if ((info
.HighWord
.Bits
.Type
& 0x10) == 0)
1135 puts_filtered("System selector ");
1136 printf_filtered ("Priviledge level = %ld. ",
1137 (unsigned long) info
.HighWord
.Bits
.Dpl
);
1138 if (info
.HighWord
.Bits
.Granularity
)
1139 puts_filtered ("Page granular.\n");
1141 puts_filtered ("Byte granular.\n");
1146 DWORD err
= GetLastError ();
1147 if (err
== ERROR_NOT_SUPPORTED
)
1148 printf_filtered ("Function not supported\n");
1150 printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel
);
1156 display_selectors (const char * args
, int from_tty
)
1158 if (!current_windows_thread
)
1160 puts_filtered ("Impossible to display selectors now.\n");
1168 puts_filtered ("Selector $cs\n");
1169 display_selector (current_windows_thread
->h
,
1170 current_windows_thread
->wow64_context
.SegCs
);
1171 puts_filtered ("Selector $ds\n");
1172 display_selector (current_windows_thread
->h
,
1173 current_windows_thread
->wow64_context
.SegDs
);
1174 puts_filtered ("Selector $es\n");
1175 display_selector (current_windows_thread
->h
,
1176 current_windows_thread
->wow64_context
.SegEs
);
1177 puts_filtered ("Selector $ss\n");
1178 display_selector (current_windows_thread
->h
,
1179 current_windows_thread
->wow64_context
.SegSs
);
1180 puts_filtered ("Selector $fs\n");
1181 display_selector (current_windows_thread
->h
,
1182 current_windows_thread
->wow64_context
.SegFs
);
1183 puts_filtered ("Selector $gs\n");
1184 display_selector (current_windows_thread
->h
,
1185 current_windows_thread
->wow64_context
.SegGs
);
1190 puts_filtered ("Selector $cs\n");
1191 display_selector (current_windows_thread
->h
,
1192 current_windows_thread
->context
.SegCs
);
1193 puts_filtered ("Selector $ds\n");
1194 display_selector (current_windows_thread
->h
,
1195 current_windows_thread
->context
.SegDs
);
1196 puts_filtered ("Selector $es\n");
1197 display_selector (current_windows_thread
->h
,
1198 current_windows_thread
->context
.SegEs
);
1199 puts_filtered ("Selector $ss\n");
1200 display_selector (current_windows_thread
->h
,
1201 current_windows_thread
->context
.SegSs
);
1202 puts_filtered ("Selector $fs\n");
1203 display_selector (current_windows_thread
->h
,
1204 current_windows_thread
->context
.SegFs
);
1205 puts_filtered ("Selector $gs\n");
1206 display_selector (current_windows_thread
->h
,
1207 current_windows_thread
->context
.SegGs
);
1213 sel
= parse_and_eval_long (args
);
1214 printf_filtered ("Selector \"%s\"\n",args
);
1215 display_selector (current_windows_thread
->h
, sel
);
1219 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
1220 printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
1221 host_address_to_string (\
1222 current_event.u.Exception.ExceptionRecord.ExceptionAddress))
1224 static handle_exception_result
1225 handle_exception (struct target_waitstatus
*ourstatus
)
1227 EXCEPTION_RECORD
*rec
= ¤t_event
.u
.Exception
.ExceptionRecord
;
1228 DWORD code
= rec
->ExceptionCode
;
1229 handle_exception_result result
= HANDLE_EXCEPTION_HANDLED
;
1231 memcpy (&siginfo_er
, rec
, sizeof siginfo_er
);
1233 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1235 /* Record the context of the current thread. */
1236 thread_rec (ptid_t (current_event
.dwProcessId
, current_event
.dwThreadId
, 0),
1241 case EXCEPTION_ACCESS_VIOLATION
:
1242 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1243 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1246 /* See if the access violation happened within the cygwin DLL
1247 itself. Cygwin uses a kind of exception handling to deal
1248 with passed-in invalid addresses. gdb should not treat
1249 these as real SEGVs since they will be silently handled by
1250 cygwin. A real SEGV will (theoretically) be caught by
1251 cygwin later in the process and will be sent as a
1252 cygwin-specific-signal. So, ignore SEGVs if they show up
1253 within the text segment of the DLL itself. */
1255 CORE_ADDR addr
= (CORE_ADDR
) (uintptr_t) rec
->ExceptionAddress
;
1257 if ((!cygwin_exceptions
&& (addr
>= cygwin_load_start
1258 && addr
< cygwin_load_end
))
1259 || (find_pc_partial_function (addr
, &fn
, NULL
, NULL
)
1260 && startswith (fn
, "KERNEL32!IsBad")))
1261 return HANDLE_EXCEPTION_UNHANDLED
;
1265 case STATUS_STACK_OVERFLOW
:
1266 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1267 ourstatus
->value
.sig
= GDB_SIGNAL_SEGV
;
1269 case STATUS_FLOAT_DENORMAL_OPERAND
:
1270 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1271 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1273 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED
:
1274 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1275 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1277 case STATUS_FLOAT_INEXACT_RESULT
:
1278 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1279 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1281 case STATUS_FLOAT_INVALID_OPERATION
:
1282 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1283 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1285 case STATUS_FLOAT_OVERFLOW
:
1286 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1287 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1289 case STATUS_FLOAT_STACK_CHECK
:
1290 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1291 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1293 case STATUS_FLOAT_UNDERFLOW
:
1294 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1295 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1297 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1298 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1299 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1301 case STATUS_INTEGER_DIVIDE_BY_ZERO
:
1302 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1303 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1305 case STATUS_INTEGER_OVERFLOW
:
1306 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1307 ourstatus
->value
.sig
= GDB_SIGNAL_FPE
;
1309 case EXCEPTION_BREAKPOINT
:
1311 if (ignore_first_breakpoint
)
1313 /* For WOW64 processes, there are always 2 breakpoint exceptions
1314 on startup, first a BREAKPOINT for the 64bit ntdll.dll,
1315 then a WX86_BREAKPOINT for the 32bit ntdll.dll.
1316 Here we only care about the WX86_BREAKPOINT's. */
1317 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1318 ignore_first_breakpoint
= false;
1322 case STATUS_WX86_BREAKPOINT
:
1323 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1324 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1327 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1328 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1330 case DBG_CONTROL_BREAK
:
1331 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1332 ourstatus
->value
.sig
= GDB_SIGNAL_INT
;
1334 case EXCEPTION_SINGLE_STEP
:
1335 case STATUS_WX86_SINGLE_STEP
:
1336 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1337 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1339 case EXCEPTION_ILLEGAL_INSTRUCTION
:
1340 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1341 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1343 case EXCEPTION_PRIV_INSTRUCTION
:
1344 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1345 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1347 case EXCEPTION_NONCONTINUABLE_EXCEPTION
:
1348 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1349 ourstatus
->value
.sig
= GDB_SIGNAL_ILL
;
1351 case MS_VC_EXCEPTION
:
1352 if (rec
->NumberParameters
>= 3
1353 && (rec
->ExceptionInformation
[0] & 0xffffffff) == 0x1000)
1355 DWORD named_thread_id
;
1356 windows_thread_info
*named_thread
;
1357 CORE_ADDR thread_name_target
;
1359 DEBUG_EXCEPTION_SIMPLE ("MS_VC_EXCEPTION");
1361 thread_name_target
= rec
->ExceptionInformation
[1];
1362 named_thread_id
= (DWORD
) (0xffffffff & rec
->ExceptionInformation
[2]);
1364 if (named_thread_id
== (DWORD
) -1)
1365 named_thread_id
= current_event
.dwThreadId
;
1367 named_thread
= thread_rec (ptid_t (current_event
.dwProcessId
,
1368 named_thread_id
, 0),
1369 DONT_INVALIDATE_CONTEXT
);
1370 if (named_thread
!= NULL
)
1372 int thread_name_len
;
1373 gdb::unique_xmalloc_ptr
<char> thread_name
;
1375 thread_name_len
= target_read_string (thread_name_target
,
1376 &thread_name
, 1025, NULL
);
1377 if (thread_name_len
> 0)
1379 thread_name
.get ()[thread_name_len
- 1] = '\0';
1380 named_thread
->name
= std::move (thread_name
);
1383 ourstatus
->value
.sig
= GDB_SIGNAL_TRAP
;
1384 result
= HANDLE_EXCEPTION_IGNORED
;
1387 /* treat improperly formed exception as unknown */
1390 /* Treat unhandled first chance exceptions specially. */
1391 if (current_event
.u
.Exception
.dwFirstChance
)
1392 return HANDLE_EXCEPTION_UNHANDLED
;
1393 printf_unfiltered ("gdb: unknown target exception 0x%08x at %s\n",
1394 (unsigned) current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
,
1395 host_address_to_string (
1396 current_event
.u
.Exception
.ExceptionRecord
.ExceptionAddress
));
1397 ourstatus
->value
.sig
= GDB_SIGNAL_UNKNOWN
;
1401 last_sig
= ourstatus
->value
.sig
;
1405 /* Resume thread specified by ID, or all artificially suspended
1406 threads, if we are continuing execution. KILLED non-zero means we
1407 have killed the inferior, so we should ignore weird errors due to
1408 threads shutting down. */
1410 windows_continue (DWORD continue_status
, int id
, int killed
)
1414 desired_stop_thread_id
= id
;
1416 /* If there are pending stops, and we might plausibly hit one of
1417 them, we don't want to actually continue the inferior -- we just
1418 want to report the stop. In this case, we just pretend to
1419 continue. See the comment by the definition of "pending_stops"
1420 for details on why this is needed. */
1421 for (const auto &item
: pending_stops
)
1423 if (desired_stop_thread_id
== -1
1424 || desired_stop_thread_id
== item
.thread_id
)
1426 DEBUG_EVENTS (("windows_continue - pending stop anticipated, "
1427 "desired=0x%x, item=0x%x\n",
1428 desired_stop_thread_id
, item
.thread_id
));
1433 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=0x%x, %s);\n",
1434 (unsigned) last_wait_event
.dwProcessId
,
1435 (unsigned) last_wait_event
.dwThreadId
,
1436 continue_status
== DBG_CONTINUE
?
1437 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1439 for (windows_thread_info
*th
: thread_list
)
1440 if (id
== -1 || id
== (int) th
->tid
)
1447 if (debug_registers_changed
)
1449 th
->wow64_context
.ContextFlags
|= CONTEXT_DEBUG_REGISTERS
;
1450 th
->wow64_context
.Dr0
= dr
[0];
1451 th
->wow64_context
.Dr1
= dr
[1];
1452 th
->wow64_context
.Dr2
= dr
[2];
1453 th
->wow64_context
.Dr3
= dr
[3];
1454 th
->wow64_context
.Dr6
= DR6_CLEAR_VALUE
;
1455 th
->wow64_context
.Dr7
= dr
[7];
1457 if (th
->wow64_context
.ContextFlags
)
1461 if (GetExitCodeThread (th
->h
, &ec
)
1462 && ec
== STILL_ACTIVE
)
1464 BOOL status
= Wow64SetThreadContext (th
->h
,
1465 &th
->wow64_context
);
1470 th
->wow64_context
.ContextFlags
= 0;
1476 if (debug_registers_changed
)
1478 th
->context
.ContextFlags
|= CONTEXT_DEBUG_REGISTERS
;
1479 th
->context
.Dr0
= dr
[0];
1480 th
->context
.Dr1
= dr
[1];
1481 th
->context
.Dr2
= dr
[2];
1482 th
->context
.Dr3
= dr
[3];
1483 th
->context
.Dr6
= DR6_CLEAR_VALUE
;
1484 th
->context
.Dr7
= dr
[7];
1486 if (th
->context
.ContextFlags
)
1490 if (GetExitCodeThread (th
->h
, &ec
)
1491 && ec
== STILL_ACTIVE
)
1493 BOOL status
= SetThreadContext (th
->h
, &th
->context
);
1498 th
->context
.ContextFlags
= 0;
1505 /* When single-stepping a specific thread, other threads must
1510 res
= ContinueDebugEvent (last_wait_event
.dwProcessId
,
1511 last_wait_event
.dwThreadId
,
1515 error (_("Failed to resume program execution"
1516 " (ContinueDebugEvent failed, error %u)"),
1517 (unsigned int) GetLastError ());
1519 debug_registers_changed
= 0;
1523 /* Called in pathological case where Windows fails to send a
1524 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1526 fake_create_process (void)
1528 current_process_handle
= OpenProcess (PROCESS_ALL_ACCESS
, FALSE
,
1529 current_event
.dwProcessId
);
1530 if (current_process_handle
!= NULL
)
1531 open_process_used
= 1;
1534 error (_("OpenProcess call failed, GetLastError = %u"),
1535 (unsigned) GetLastError ());
1536 /* We can not debug anything in that case. */
1538 current_windows_thread
1539 = windows_add_thread (ptid_t (current_event
.dwProcessId
,
1540 current_event
.dwThreadId
, 0),
1541 current_event
.u
.CreateThread
.hThread
,
1542 current_event
.u
.CreateThread
.lpThreadLocalBase
,
1543 true /* main_thread_p */);
1544 return current_event
.dwThreadId
;
1548 windows_nat_target::resume (ptid_t ptid
, int step
, enum gdb_signal sig
)
1550 windows_thread_info
*th
;
1551 DWORD continue_status
= DBG_CONTINUE
;
1553 /* A specific PTID means `step only this thread id'. */
1554 int resume_all
= ptid
== minus_one_ptid
;
1556 /* If we're continuing all threads, it's the current inferior that
1557 should be handled specially. */
1559 ptid
= inferior_ptid
;
1561 if (sig
!= GDB_SIGNAL_0
)
1563 if (current_event
.dwDebugEventCode
!= EXCEPTION_DEBUG_EVENT
)
1565 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig
));
1567 else if (sig
== last_sig
)
1568 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
1571 /* This code does not seem to work, because
1572 the kernel does probably not consider changes in the ExceptionRecord
1573 structure when passing the exception to the inferior.
1574 Note that this seems possible in the exception handler itself. */
1576 for (const xlate_exception
&x
: xlate
)
1579 current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
1581 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
1584 if (continue_status
== DBG_CONTINUE
)
1586 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig
));
1590 DEBUG_EXCEPT(("Can only continue with received signal %d.\n",
1594 last_sig
= GDB_SIGNAL_0
;
1596 DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=0x%x, step=%d, sig=%d);\n",
1597 ptid
.pid (), (unsigned) ptid
.lwp (), step
, sig
));
1599 /* Get context for currently selected thread. */
1600 th
= thread_rec (inferior_ptid
, DONT_INVALIDATE_CONTEXT
);
1608 /* Single step by setting t bit. */
1609 struct regcache
*regcache
= get_current_regcache ();
1610 struct gdbarch
*gdbarch
= regcache
->arch ();
1611 fetch_registers (regcache
, gdbarch_ps_regnum (gdbarch
));
1612 th
->wow64_context
.EFlags
|= FLAG_TRACE_BIT
;
1615 if (th
->wow64_context
.ContextFlags
)
1617 if (debug_registers_changed
)
1619 th
->wow64_context
.Dr0
= dr
[0];
1620 th
->wow64_context
.Dr1
= dr
[1];
1621 th
->wow64_context
.Dr2
= dr
[2];
1622 th
->wow64_context
.Dr3
= dr
[3];
1623 th
->wow64_context
.Dr6
= DR6_CLEAR_VALUE
;
1624 th
->wow64_context
.Dr7
= dr
[7];
1626 CHECK (Wow64SetThreadContext (th
->h
, &th
->wow64_context
));
1627 th
->wow64_context
.ContextFlags
= 0;
1635 /* Single step by setting t bit. */
1636 struct regcache
*regcache
= get_current_regcache ();
1637 struct gdbarch
*gdbarch
= regcache
->arch ();
1638 fetch_registers (regcache
, gdbarch_ps_regnum (gdbarch
));
1639 th
->context
.EFlags
|= FLAG_TRACE_BIT
;
1642 if (th
->context
.ContextFlags
)
1644 if (debug_registers_changed
)
1646 th
->context
.Dr0
= dr
[0];
1647 th
->context
.Dr1
= dr
[1];
1648 th
->context
.Dr2
= dr
[2];
1649 th
->context
.Dr3
= dr
[3];
1650 th
->context
.Dr6
= DR6_CLEAR_VALUE
;
1651 th
->context
.Dr7
= dr
[7];
1653 CHECK (SetThreadContext (th
->h
, &th
->context
));
1654 th
->context
.ContextFlags
= 0;
1659 /* Allow continuing with the same signal that interrupted us.
1660 Otherwise complain. */
1663 windows_continue (continue_status
, -1, 0);
1665 windows_continue (continue_status
, ptid
.lwp (), 0);
1668 /* Ctrl-C handler used when the inferior is not run in the same console. The
1669 handler is in charge of interrupting the inferior using DebugBreakProcess.
1670 Note that this function is not available prior to Windows XP. In this case
1671 we emit a warning. */
1673 ctrl_c_handler (DWORD event_type
)
1675 const int attach_flag
= current_inferior ()->attach_flag
;
1677 /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
1678 if (event_type
!= CTRL_C_EVENT
&& event_type
!= CTRL_BREAK_EVENT
)
1681 /* If the inferior and the debugger share the same console, do nothing as
1682 the inferior has also received the Ctrl-C event. */
1683 if (!new_console
&& !attach_flag
)
1686 if (!DebugBreakProcess (current_process_handle
))
1687 warning (_("Could not interrupt program. "
1688 "Press Ctrl-c in the program console."));
1690 /* Return true to tell that Ctrl-C has been handled. */
1694 /* A wrapper for WaitForDebugEvent that sets "last_wait_event"
1697 wait_for_debug_event (DEBUG_EVENT
*event
, DWORD timeout
)
1699 BOOL result
= WaitForDebugEvent (event
, timeout
);
1701 last_wait_event
= *event
;
1705 /* Get the next event from the child. Returns a non-zero thread id if the event
1706 requires handling by WFI (or whatever). */
1709 windows_nat_target::get_windows_debug_event (int pid
,
1710 struct target_waitstatus
*ourstatus
)
1713 DWORD continue_status
, event_code
;
1714 windows_thread_info
*th
;
1715 static windows_thread_info
dummy_thread_info (0, 0, 0);
1716 DWORD thread_id
= 0;
1718 /* If there is a relevant pending stop, report it now. See the
1719 comment by the definition of "pending_stops" for details on why
1721 for (auto iter
= pending_stops
.begin ();
1722 iter
!= pending_stops
.end ();
1725 if (desired_stop_thread_id
== -1
1726 || desired_stop_thread_id
== iter
->thread_id
)
1728 thread_id
= iter
->thread_id
;
1729 *ourstatus
= iter
->status
;
1730 current_event
= iter
->event
;
1732 inferior_ptid
= ptid_t (current_event
.dwProcessId
, thread_id
, 0);
1733 current_windows_thread
= thread_rec (inferior_ptid
,
1734 INVALIDATE_CONTEXT
);
1735 current_windows_thread
->reload_context
= 1;
1737 DEBUG_EVENTS (("get_windows_debug_event - "
1738 "pending stop found in 0x%x (desired=0x%x)\n",
1739 thread_id
, desired_stop_thread_id
));
1741 pending_stops
.erase (iter
);
1746 last_sig
= GDB_SIGNAL_0
;
1748 if (!(debug_event
= wait_for_debug_event (¤t_event
, 1000)))
1752 continue_status
= DBG_CONTINUE
;
1754 event_code
= current_event
.dwDebugEventCode
;
1755 ourstatus
->kind
= TARGET_WAITKIND_SPURIOUS
;
1757 have_saved_context
= 0;
1761 case CREATE_THREAD_DEBUG_EVENT
:
1762 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1763 (unsigned) current_event
.dwProcessId
,
1764 (unsigned) current_event
.dwThreadId
,
1765 "CREATE_THREAD_DEBUG_EVENT"));
1766 if (saw_create
!= 1)
1768 inferior
*inf
= find_inferior_pid (this, current_event
.dwProcessId
);
1769 if (!saw_create
&& inf
->attach_flag
)
1771 /* Kludge around a Windows bug where first event is a create
1772 thread event. Caused when attached process does not have
1774 thread_id
= fake_create_process ();
1780 /* Record the existence of this thread. */
1781 thread_id
= current_event
.dwThreadId
;
1782 th
= windows_add_thread
1783 (ptid_t (current_event
.dwProcessId
, current_event
.dwThreadId
, 0),
1784 current_event
.u
.CreateThread
.hThread
,
1785 current_event
.u
.CreateThread
.lpThreadLocalBase
,
1786 false /* main_thread_p */);
1790 case EXIT_THREAD_DEBUG_EVENT
:
1791 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1792 (unsigned) current_event
.dwProcessId
,
1793 (unsigned) current_event
.dwThreadId
,
1794 "EXIT_THREAD_DEBUG_EVENT"));
1795 windows_delete_thread (ptid_t (current_event
.dwProcessId
,
1796 current_event
.dwThreadId
, 0),
1797 current_event
.u
.ExitThread
.dwExitCode
,
1798 false /* main_thread_p */);
1799 th
= &dummy_thread_info
;
1802 case CREATE_PROCESS_DEBUG_EVENT
:
1803 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1804 (unsigned) current_event
.dwProcessId
,
1805 (unsigned) current_event
.dwThreadId
,
1806 "CREATE_PROCESS_DEBUG_EVENT"));
1807 CloseHandle (current_event
.u
.CreateProcessInfo
.hFile
);
1808 if (++saw_create
!= 1)
1811 current_process_handle
= current_event
.u
.CreateProcessInfo
.hProcess
;
1812 /* Add the main thread. */
1813 th
= windows_add_thread
1814 (ptid_t (current_event
.dwProcessId
,
1815 current_event
.dwThreadId
, 0),
1816 current_event
.u
.CreateProcessInfo
.hThread
,
1817 current_event
.u
.CreateProcessInfo
.lpThreadLocalBase
,
1818 true /* main_thread_p */);
1819 thread_id
= current_event
.dwThreadId
;
1822 case EXIT_PROCESS_DEBUG_EVENT
:
1823 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1824 (unsigned) current_event
.dwProcessId
,
1825 (unsigned) current_event
.dwThreadId
,
1826 "EXIT_PROCESS_DEBUG_EVENT"));
1827 if (!windows_initialization_done
)
1829 target_terminal::ours ();
1830 target_mourn_inferior (inferior_ptid
);
1831 error (_("During startup program exited with code 0x%x."),
1832 (unsigned int) current_event
.u
.ExitProcess
.dwExitCode
);
1834 else if (saw_create
== 1)
1836 windows_delete_thread (ptid_t (current_event
.dwProcessId
,
1837 current_event
.dwThreadId
, 0),
1838 0, true /* main_thread_p */);
1839 DWORD exit_status
= current_event
.u
.ExitProcess
.dwExitCode
;
1840 /* If the exit status looks like a fatal exception, but we
1841 don't recognize the exception's code, make the original
1842 exit status value available, to avoid losing
1845 = WIFSIGNALED (exit_status
) ? WTERMSIG (exit_status
) : -1;
1846 if (exit_signal
== -1)
1848 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1849 ourstatus
->value
.integer
= exit_status
;
1853 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
1854 ourstatus
->value
.sig
= gdb_signal_from_host (exit_signal
);
1856 thread_id
= current_event
.dwThreadId
;
1860 case LOAD_DLL_DEBUG_EVENT
:
1861 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1862 (unsigned) current_event
.dwProcessId
,
1863 (unsigned) current_event
.dwThreadId
,
1864 "LOAD_DLL_DEBUG_EVENT"));
1865 CloseHandle (current_event
.u
.LoadDll
.hFile
);
1866 if (saw_create
!= 1 || ! windows_initialization_done
)
1868 catch_errors (handle_load_dll
);
1869 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1870 ourstatus
->value
.integer
= 0;
1871 thread_id
= current_event
.dwThreadId
;
1874 case UNLOAD_DLL_DEBUG_EVENT
:
1875 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1876 (unsigned) current_event
.dwProcessId
,
1877 (unsigned) current_event
.dwThreadId
,
1878 "UNLOAD_DLL_DEBUG_EVENT"));
1879 if (saw_create
!= 1 || ! windows_initialization_done
)
1881 catch_errors (handle_unload_dll
);
1882 ourstatus
->kind
= TARGET_WAITKIND_LOADED
;
1883 ourstatus
->value
.integer
= 0;
1884 thread_id
= current_event
.dwThreadId
;
1887 case EXCEPTION_DEBUG_EVENT
:
1888 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1889 (unsigned) current_event
.dwProcessId
,
1890 (unsigned) current_event
.dwThreadId
,
1891 "EXCEPTION_DEBUG_EVENT"));
1892 if (saw_create
!= 1)
1894 switch (handle_exception (ourstatus
))
1896 case HANDLE_EXCEPTION_UNHANDLED
:
1898 continue_status
= DBG_EXCEPTION_NOT_HANDLED
;
1900 case HANDLE_EXCEPTION_HANDLED
:
1901 thread_id
= current_event
.dwThreadId
;
1903 case HANDLE_EXCEPTION_IGNORED
:
1904 continue_status
= DBG_CONTINUE
;
1909 case OUTPUT_DEBUG_STRING_EVENT
: /* Message from the kernel. */
1910 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1911 (unsigned) current_event
.dwProcessId
,
1912 (unsigned) current_event
.dwThreadId
,
1913 "OUTPUT_DEBUG_STRING_EVENT"));
1914 if (saw_create
!= 1)
1916 thread_id
= handle_output_debug_string (ourstatus
);
1920 if (saw_create
!= 1)
1922 printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n",
1923 (unsigned) current_event
.dwProcessId
,
1924 (unsigned) current_event
.dwThreadId
);
1925 printf_unfiltered (" unknown event code %u\n",
1926 (unsigned) current_event
.dwDebugEventCode
);
1930 if (!thread_id
|| saw_create
!= 1)
1932 CHECK (windows_continue (continue_status
, desired_stop_thread_id
, 0));
1934 else if (desired_stop_thread_id
!= -1 && desired_stop_thread_id
!= thread_id
)
1936 /* Pending stop. See the comment by the definition of
1937 "pending_stops" for details on why this is needed. */
1938 DEBUG_EVENTS (("get_windows_debug_event - "
1939 "unexpected stop in 0x%x (expecting 0x%x)\n",
1940 thread_id
, desired_stop_thread_id
));
1942 if (current_event
.dwDebugEventCode
== EXCEPTION_DEBUG_EVENT
1943 && (current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
1944 == EXCEPTION_BREAKPOINT
)
1945 && windows_initialization_done
)
1947 ptid_t ptid
= ptid_t (current_event
.dwProcessId
, thread_id
, 0);
1948 th
= thread_rec (ptid
, INVALIDATE_CONTEXT
);
1949 th
->stopped_at_software_breakpoint
= true;
1951 pending_stops
.push_back ({thread_id
, *ourstatus
, current_event
});
1953 CHECK (windows_continue (continue_status
, desired_stop_thread_id
, 0));
1957 inferior_ptid
= ptid_t (current_event
.dwProcessId
, thread_id
, 0);
1958 current_windows_thread
= th
;
1959 if (!current_windows_thread
)
1960 current_windows_thread
= thread_rec (inferior_ptid
,
1961 INVALIDATE_CONTEXT
);
1968 /* Wait for interesting events to occur in the target process. */
1970 windows_nat_target::wait (ptid_t ptid
, struct target_waitstatus
*ourstatus
,
1975 /* We loop when we get a non-standard exception rather than return
1976 with a SPURIOUS because resume can try and step or modify things,
1977 which needs a current_thread->h. But some of these exceptions mark
1978 the birth or death of threads, which mean that the current thread
1979 isn't necessarily what you think it is. */
1985 /* If the user presses Ctrl-c while the debugger is waiting
1986 for an event, he expects the debugger to interrupt his program
1987 and to get the prompt back. There are two possible situations:
1989 - The debugger and the program do not share the console, in
1990 which case the Ctrl-c event only reached the debugger.
1991 In that case, the ctrl_c handler will take care of interrupting
1992 the inferior. Note that this case is working starting with
1993 Windows XP. For Windows 2000, Ctrl-C should be pressed in the
1996 - The debugger and the program share the same console, in which
1997 case both debugger and inferior will receive the Ctrl-c event.
1998 In that case the ctrl_c handler will ignore the event, as the
1999 Ctrl-c event generated inside the inferior will trigger the
2000 expected debug event.
2002 FIXME: brobecker/2008-05-20: If the inferior receives the
2003 signal first and the delay until GDB receives that signal
2004 is sufficiently long, GDB can sometimes receive the SIGINT
2005 after we have unblocked the CTRL+C handler. This would
2006 lead to the debugger stopping prematurely while handling
2007 the new-thread event that comes with the handling of the SIGINT
2008 inside the inferior, and then stop again immediately when
2009 the user tries to resume the execution in the inferior.
2010 This is a classic race that we should try to fix one day. */
2011 SetConsoleCtrlHandler (&ctrl_c_handler
, TRUE
);
2012 retval
= get_windows_debug_event (pid
, ourstatus
);
2013 SetConsoleCtrlHandler (&ctrl_c_handler
, FALSE
);
2017 ptid_t result
= ptid_t (current_event
.dwProcessId
, retval
, 0);
2019 if (current_windows_thread
!= nullptr)
2021 current_windows_thread
->stopped_at_software_breakpoint
= false;
2022 if (current_event
.dwDebugEventCode
== EXCEPTION_DEBUG_EVENT
2023 && (current_event
.u
.Exception
.ExceptionRecord
.ExceptionCode
2024 == EXCEPTION_BREAKPOINT
)
2025 && windows_initialization_done
)
2026 current_windows_thread
->stopped_at_software_breakpoint
= true;
2035 if (deprecated_ui_loop_hook
!= NULL
)
2036 detach
= deprecated_ui_loop_hook (0);
2044 /* Iterate over all DLLs currently mapped by our inferior, and
2045 add them to our list of solibs. */
2048 windows_add_all_dlls (void)
2050 HMODULE dummy_hmodule
;
2058 if (EnumProcessModulesEx (current_process_handle
, &dummy_hmodule
,
2059 sizeof (HMODULE
), &cb_needed
,
2060 LIST_MODULES_32BIT
) == 0)
2066 if (EnumProcessModules (current_process_handle
, &dummy_hmodule
,
2067 sizeof (HMODULE
), &cb_needed
) == 0)
2074 hmodules
= (HMODULE
*) alloca (cb_needed
);
2078 if (EnumProcessModulesEx (current_process_handle
, hmodules
,
2079 cb_needed
, &cb_needed
,
2080 LIST_MODULES_32BIT
) == 0)
2086 if (EnumProcessModules (current_process_handle
, hmodules
,
2087 cb_needed
, &cb_needed
) == 0)
2091 char system_dir
[__PMAX
];
2092 char syswow_dir
[__PMAX
];
2093 size_t system_dir_len
= 0;
2094 bool convert_syswow_dir
= false;
2099 /* This fails on 32bit Windows because it has no SysWOW64 directory,
2100 and in this case a path conversion isn't necessary. */
2101 UINT len
= GetSystemWow64DirectoryA (syswow_dir
, sizeof (syswow_dir
));
2104 /* Check that we have passed a large enough buffer. */
2105 gdb_assert (len
< sizeof (syswow_dir
));
2107 len
= GetSystemDirectoryA (system_dir
, sizeof (system_dir
));
2109 gdb_assert (len
!= 0);
2110 /* Check that we have passed a large enough buffer. */
2111 gdb_assert (len
< sizeof (system_dir
));
2113 strcat (system_dir
, "\\");
2114 strcat (syswow_dir
, "\\");
2115 system_dir_len
= strlen (system_dir
);
2117 convert_syswow_dir
= true;
2121 for (i
= 1; i
< (int) (cb_needed
/ sizeof (HMODULE
)); i
++)
2125 wchar_t dll_name
[__PMAX
];
2126 char dll_name_mb
[__PMAX
];
2128 char dll_name
[__PMAX
];
2131 if (GetModuleInformation (current_process_handle
, hmodules
[i
],
2132 &mi
, sizeof (mi
)) == 0)
2134 if (GetModuleFileNameEx (current_process_handle
, hmodules
[i
],
2135 dll_name
, sizeof (dll_name
)) == 0)
2138 wcstombs (dll_name_mb
, dll_name
, __PMAX
);
2143 /* Convert the DLL path of 32bit processes returned by
2144 GetModuleFileNameEx from the 64bit system directory to the
2145 32bit syswow64 directory if necessary. */
2146 std::string syswow_dll_path
;
2147 if (convert_syswow_dir
2148 && strncasecmp (name
, system_dir
, system_dir_len
) == 0
2149 && strchr (name
+ system_dir_len
, '\\') == nullptr)
2151 syswow_dll_path
= syswow_dir
;
2152 syswow_dll_path
+= name
+ system_dir_len
;
2153 name
= syswow_dll_path
.c_str();
2156 solib_end
->next
= windows_make_so (name
, mi
.lpBaseOfDll
);
2157 solib_end
= solib_end
->next
;
2162 do_initial_windows_stuff (struct target_ops
*ops
, DWORD pid
, int attaching
)
2165 struct inferior
*inf
;
2167 last_sig
= GDB_SIGNAL_0
;
2169 exception_count
= 0;
2170 open_process_used
= 0;
2171 debug_registers_changed
= 0;
2172 debug_registers_used
= 0;
2173 for (i
= 0; i
< sizeof (dr
) / sizeof (dr
[0]); i
++)
2176 cygwin_load_start
= cygwin_load_end
= 0;
2178 current_event
.dwProcessId
= pid
;
2179 memset (¤t_event
, 0, sizeof (current_event
));
2180 if (!target_is_pushed (ops
))
2182 disable_breakpoints_in_shlibs ();
2183 windows_clear_solib ();
2184 clear_proceed_status (0);
2185 init_wait_for_inferior ();
2188 ignore_first_breakpoint
= !attaching
&& wow64_process
;
2192 windows_set_context_register_offsets (amd64_mappings
);
2193 windows_set_segment_register_p (amd64_windows_segment_register_p
);
2198 windows_set_context_register_offsets (i386_mappings
);
2199 windows_set_segment_register_p (i386_windows_segment_register_p
);
2202 inf
= current_inferior ();
2203 inferior_appeared (inf
, pid
);
2204 inf
->attach_flag
= attaching
;
2206 /* Make the new process the current inferior, so terminal handling
2207 can rely on it. When attaching, we don't know about any thread
2208 id here, but that's OK --- nothing should be referencing the
2209 current thread until we report an event out of windows_wait. */
2210 inferior_ptid
= ptid_t (pid
);
2212 target_terminal::init ();
2213 target_terminal::inferior ();
2215 windows_initialization_done
= 0;
2219 struct target_waitstatus status
;
2221 ops
->wait (minus_one_ptid
, &status
, 0);
2223 /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread
2225 if (status
.kind
!= TARGET_WAITKIND_LOADED
2226 && status
.kind
!= TARGET_WAITKIND_SPURIOUS
)
2229 ops
->resume (minus_one_ptid
, 0, GDB_SIGNAL_0
);
2232 /* Now that the inferior has been started and all DLLs have been mapped,
2233 we can iterate over all DLLs and load them in.
2235 We avoid doing it any earlier because, on certain versions of Windows,
2236 LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
2237 we have seen on Windows 8.1 that the ntdll.dll load event does not
2238 include the DLL name, preventing us from creating an associated SO.
2239 A possible explanation is that ntdll.dll might be mapped before
2240 the SO info gets created by the Windows system -- ntdll.dll is
2241 the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
2242 do not seem to suffer from that problem.
2244 Rather than try to work around this sort of issue, it is much
2245 simpler to just ignore DLL load/unload events during the startup
2246 phase, and then process them all in one batch now. */
2247 windows_add_all_dlls ();
2249 windows_initialization_done
= 1;
2253 /* Try to set or remove a user privilege to the current process. Return -1
2254 if that fails, the previous setting of that privilege otherwise.
2256 This code is copied from the Cygwin source code and rearranged to allow
2257 dynamically loading of the needed symbols from advapi32 which is only
2258 available on NT/2K/XP. */
2260 set_process_privilege (const char *privilege
, BOOL enable
)
2262 HANDLE token_hdl
= NULL
;
2264 TOKEN_PRIVILEGES new_priv
, orig_priv
;
2268 if (!OpenProcessToken (GetCurrentProcess (),
2269 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
2273 if (!LookupPrivilegeValueA (NULL
, privilege
, &restore_priv
))
2276 new_priv
.PrivilegeCount
= 1;
2277 new_priv
.Privileges
[0].Luid
= restore_priv
;
2278 new_priv
.Privileges
[0].Attributes
= enable
? SE_PRIVILEGE_ENABLED
: 0;
2280 if (!AdjustTokenPrivileges (token_hdl
, FALSE
, &new_priv
,
2281 sizeof orig_priv
, &orig_priv
, &size
))
2284 /* Disabled, otherwise every `attach' in an unprivileged user session
2285 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
2286 windows_attach(). */
2287 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
2288 be enabled. GetLastError () returns an correct error code, though. */
2289 if (enable
&& GetLastError () == ERROR_NOT_ALL_ASSIGNED
)
2293 ret
= orig_priv
.Privileges
[0].Attributes
== SE_PRIVILEGE_ENABLED
? 1 : 0;
2297 CloseHandle (token_hdl
);
2302 /* Attach to process PID, then initialize for debugging it. */
2305 windows_nat_target::attach (const char *args
, int from_tty
)
2310 pid
= parse_pid_to_attach (args
);
2312 if (set_process_privilege (SE_DEBUG_NAME
, TRUE
) < 0)
2314 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
2315 printf_unfiltered ("This can cause attach to "
2316 "fail on Windows NT/2K/XP\n");
2319 windows_init_thread_list ();
2320 ok
= DebugActiveProcess (pid
);
2326 /* Try fall back to Cygwin pid. */
2327 pid
= cygwin_internal (CW_CYGWIN_PID_TO_WINPID
, pid
);
2330 ok
= DebugActiveProcess (pid
);
2335 error (_("Can't attach to process %u (error %u)"),
2336 (unsigned) pid
, (unsigned) GetLastError ());
2338 DebugSetProcessKillOnExit (FALSE
);
2342 const char *exec_file
= get_exec_file (0);
2345 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file
,
2346 target_pid_to_str (ptid_t (pid
)).c_str ());
2348 printf_unfiltered ("Attaching to %s\n",
2349 target_pid_to_str (ptid_t (pid
)).c_str ());
2353 HANDLE h
= OpenProcess (PROCESS_QUERY_INFORMATION
, FALSE
, pid
);
2357 if (IsWow64Process (h
, &wow64
))
2358 wow64_process
= wow64
;
2363 do_initial_windows_stuff (this, pid
, 1);
2364 target_terminal::ours ();
2368 windows_nat_target::detach (inferior
*inf
, int from_tty
)
2372 ptid_t ptid
= minus_one_ptid
;
2373 resume (ptid
, 0, GDB_SIGNAL_0
);
2375 if (!DebugActiveProcessStop (current_event
.dwProcessId
))
2377 error (_("Can't detach process %u (error %u)"),
2378 (unsigned) current_event
.dwProcessId
, (unsigned) GetLastError ());
2381 DebugSetProcessKillOnExit (FALSE
);
2383 if (detached
&& from_tty
)
2385 const char *exec_file
= get_exec_file (0);
2388 printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file
,
2389 (unsigned) current_event
.dwProcessId
);
2392 x86_cleanup_dregs ();
2393 inferior_ptid
= null_ptid
;
2394 detach_inferior (inf
);
2396 maybe_unpush_target ();
2399 /* Try to determine the executable filename.
2401 EXE_NAME_RET is a pointer to a buffer whose size is EXE_NAME_MAX_LEN.
2403 Upon success, the filename is stored inside EXE_NAME_RET, and
2404 this function returns nonzero.
2406 Otherwise, this function returns zero and the contents of
2407 EXE_NAME_RET is undefined. */
2410 windows_get_exec_module_filename (char *exe_name_ret
, size_t exe_name_max_len
)
2420 if (!EnumProcessModulesEx (current_process_handle
, &dh_buf
,
2421 sizeof (HMODULE
), &cbNeeded
,
2422 LIST_MODULES_32BIT
) || !cbNeeded
)
2428 if (!EnumProcessModules (current_process_handle
, &dh_buf
,
2429 sizeof (HMODULE
), &cbNeeded
) || !cbNeeded
)
2433 /* We know the executable is always first in the list of modules,
2434 which we just fetched. So no need to fetch more. */
2438 /* Cygwin prefers that the path be in /x/y/z format, so extract
2439 the filename into a temporary buffer first, and then convert it
2440 to POSIX format into the destination buffer. */
2441 cygwin_buf_t
*pathbuf
= (cygwin_buf_t
*) alloca (exe_name_max_len
* sizeof (cygwin_buf_t
));
2443 len
= GetModuleFileNameEx (current_process_handle
,
2444 dh_buf
, pathbuf
, exe_name_max_len
);
2446 error (_("Error getting executable filename: %u."),
2447 (unsigned) GetLastError ());
2448 if (cygwin_conv_path (CCP_WIN_W_TO_POSIX
, pathbuf
, exe_name_ret
,
2449 exe_name_max_len
) < 0)
2450 error (_("Error converting executable filename to POSIX: %d."), errno
);
2453 len
= GetModuleFileNameEx (current_process_handle
,
2454 dh_buf
, exe_name_ret
, exe_name_max_len
);
2456 error (_("Error getting executable filename: %u."),
2457 (unsigned) GetLastError ());
2460 return 1; /* success */
2463 /* The pid_to_exec_file target_ops method for this platform. */
2466 windows_nat_target::pid_to_exec_file (int pid
)
2468 static char path
[__PMAX
];
2470 /* Try to find exe name as symlink target of /proc/<pid>/exe. */
2472 char procexe
[sizeof ("/proc/4294967295/exe")];
2474 xsnprintf (procexe
, sizeof (procexe
), "/proc/%u/exe", pid
);
2475 nchars
= readlink (procexe
, path
, sizeof(path
));
2476 if (nchars
> 0 && nchars
< sizeof (path
))
2478 path
[nchars
] = '\0'; /* Got it */
2483 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
2484 of gdb, or we're trying to debug a non-Cygwin windows executable. */
2485 if (!windows_get_exec_module_filename (path
, sizeof (path
)))
2491 /* Print status information about what we're accessing. */
2494 windows_nat_target::files_info ()
2496 struct inferior
*inf
= current_inferior ();
2498 printf_unfiltered ("\tUsing the running image of %s %s.\n",
2499 inf
->attach_flag
? "attached" : "child",
2500 target_pid_to_str (inferior_ptid
).c_str ());
2503 /* Modify CreateProcess parameters for use of a new separate console.
2505 *FLAGS: DWORD parameter for general process creation flags.
2506 *SI: STARTUPINFO structure, for which the console window size and
2507 console buffer size is filled in if GDB is running in a console.
2508 to create the new console.
2509 The size of the used font is not available on all versions of
2510 Windows OS. Furthermore, the current font might not be the default
2511 font, but this is still better than before.
2512 If the windows and buffer sizes are computed,
2513 SI->DWFLAGS is changed so that this information is used
2514 by CreateProcess function. */
2517 windows_set_console_info (STARTUPINFO
*si
, DWORD
*flags
)
2519 HANDLE hconsole
= CreateFile ("CONOUT$", GENERIC_READ
| GENERIC_WRITE
,
2520 FILE_SHARE_READ
, NULL
, OPEN_EXISTING
, 0, 0);
2522 if (hconsole
!= INVALID_HANDLE_VALUE
)
2524 CONSOLE_SCREEN_BUFFER_INFO sbinfo
;
2526 CONSOLE_FONT_INFO cfi
;
2528 GetCurrentConsoleFont (hconsole
, FALSE
, &cfi
);
2529 font_size
= GetConsoleFontSize (hconsole
, cfi
.nFont
);
2530 GetConsoleScreenBufferInfo(hconsole
, &sbinfo
);
2531 si
->dwXSize
= sbinfo
.srWindow
.Right
- sbinfo
.srWindow
.Left
+ 1;
2532 si
->dwYSize
= sbinfo
.srWindow
.Bottom
- sbinfo
.srWindow
.Top
+ 1;
2534 si
->dwXSize
*= font_size
.X
;
2538 si
->dwYSize
*= font_size
.Y
;
2541 si
->dwXCountChars
= sbinfo
.dwSize
.X
;
2542 si
->dwYCountChars
= sbinfo
.dwSize
.Y
;
2543 si
->dwFlags
|= STARTF_USESIZE
| STARTF_USECOUNTCHARS
;
2545 *flags
|= CREATE_NEW_CONSOLE
;
2549 /* Function called by qsort to sort environment strings. */
2552 envvar_cmp (const void *a
, const void *b
)
2554 const char **p
= (const char **) a
;
2555 const char **q
= (const char **) b
;
2556 return strcasecmp (*p
, *q
);
2562 clear_win32_environment (char **env
)
2566 wchar_t *copy
= NULL
, *equalpos
;
2568 for (i
= 0; env
[i
] && *env
[i
]; i
++)
2570 len
= mbstowcs (NULL
, env
[i
], 0) + 1;
2571 copy
= (wchar_t *) xrealloc (copy
, len
* sizeof (wchar_t));
2572 mbstowcs (copy
, env
[i
], len
);
2573 equalpos
= wcschr (copy
, L
'=');
2576 SetEnvironmentVariableW (copy
, NULL
);
2584 /* Redirection of inferior I/O streams for native MS-Windows programs.
2585 Unlike on Unix, where this is handled by invoking the inferior via
2586 the shell, on MS-Windows we need to emulate the cmd.exe shell.
2588 The official documentation of the cmd.exe redirection features is here:
2590 http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx
2592 (That page talks about Windows XP, but there's no newer
2593 documentation, so we assume later versions of cmd.exe didn't change
2596 Caveat: the documentation on that page seems to include a few lies.
2597 For example, it describes strange constructs 1<&2 and 2<&1, which
2598 seem to work only when 1>&2 resp. 2>&1 would make sense, and so I
2599 think the cmd.exe parser of the redirection symbols simply doesn't
2600 care about the < vs > distinction in these cases. Therefore, the
2601 supported features are explicitly documented below.
2603 The emulation below aims at supporting all the valid use cases
2604 supported by cmd.exe, which include:
2606 < FILE redirect standard input from FILE
2607 0< FILE redirect standard input from FILE
2608 <&N redirect standard input from file descriptor N
2609 0<&N redirect standard input from file descriptor N
2610 > FILE redirect standard output to FILE
2611 >> FILE append standard output to FILE
2612 1>> FILE append standard output to FILE
2613 >&N redirect standard output to file descriptor N
2614 1>&N redirect standard output to file descriptor N
2615 >>&N append standard output to file descriptor N
2616 1>>&N append standard output to file descriptor N
2617 2> FILE redirect standard error to FILE
2618 2>> FILE append standard error to FILE
2619 2>&N redirect standard error to file descriptor N
2620 2>>&N append standard error to file descriptor N
2622 Note that using N > 2 in the above construct is supported, but
2623 requires that the corresponding file descriptor be open by some
2624 means elsewhere or outside GDB. Also note that using ">&0" or
2625 "<&2" will generally fail, because the file descriptor redirected
2626 from is normally open in an incompatible mode (e.g., FD 0 is open
2627 for reading only). IOW, use of such tricks is not recommended;
2628 you are on your own.
2630 We do NOT support redirection of file descriptors above 2, as in
2631 "3>SOME-FILE", because MinGW compiled programs don't (supporting
2632 that needs special handling in the startup code that MinGW
2633 doesn't have). Pipes are also not supported.
2635 As for invalid use cases, where the redirection contains some
2636 error, the emulation below will detect that and produce some
2637 error and/or failure. But the behavior in those cases is not
2638 bug-for-bug compatible with what cmd.exe does in those cases.
2639 That's because what cmd.exe does then is not well defined, and
2640 seems to be a side effect of the cmd.exe parsing of the command
2641 line more than anything else. For example, try redirecting to an
2642 invalid file name, as in "> foo:bar".
2644 There are also minor syntactic deviations from what cmd.exe does
2645 in some corner cases. For example, it doesn't support the likes
2646 of "> &foo" to mean redirect to file named literally "&foo"; we
2647 do support that here, because that, too, sounds like some issue
2648 with the cmd.exe parser. Another nicety is that we support
2649 redirection targets that use file names with forward slashes,
2650 something cmd.exe doesn't -- this comes in handy since GDB
2651 file-name completion can be used when typing the command line for
2654 /* Support routines for redirecting standard handles of the inferior. */
2656 /* Parse a single redirection spec, open/duplicate the specified
2657 file/fd, and assign the appropriate value to one of the 3 standard
2658 file descriptors. */
2660 redir_open (const char *redir_string
, int *inp
, int *out
, int *err
)
2662 int *fd
, ref_fd
= -2;
2664 const char *fname
= redir_string
+ 1;
2665 int rc
= *redir_string
;
2680 fd
= (rc
== '2') ? err
: out
;
2681 mode
= O_WRONLY
| O_CREAT
;
2694 if (*fname
== '&' && '0' <= fname
[1] && fname
[1] <= '9')
2696 /* A reference to a file descriptor. */
2698 ref_fd
= (int) strtol (fname
+ 1, &fdtail
, 10);
2699 if (fdtail
> fname
+ 1 && *fdtail
== '\0')
2701 /* Don't allow redirection when open modes are incompatible. */
2702 if ((ref_fd
== 0 && (fd
== out
|| fd
== err
))
2703 || ((ref_fd
== 1 || ref_fd
== 2) && fd
== inp
))
2710 else if (ref_fd
== 1)
2712 else if (ref_fd
== 2)
2722 fname
++; /* skip the separator space */
2723 /* If the descriptor is already open, close it. This allows
2724 multiple specs of redirections for the same stream, which is
2725 somewhat nonsensical, but still valid and supported by cmd.exe.
2726 (But cmd.exe only opens a single file in this case, the one
2727 specified by the last redirection spec on the command line.) */
2732 *fd
= _open (fname
, mode
, _S_IREAD
| _S_IWRITE
);
2736 else if (ref_fd
== -1)
2737 *fd
= -1; /* reset to default destination */
2740 *fd
= _dup (ref_fd
);
2744 /* _open just sets a flag for O_APPEND, which won't be passed to the
2745 inferior, so we need to actually move the file pointer. */
2746 if ((mode
& O_APPEND
) != 0)
2747 _lseek (*fd
, 0L, SEEK_END
);
2751 /* Canonicalize a single redirection spec and set up the corresponding
2752 file descriptor as specified. */
2754 redir_set_redirection (const char *s
, int *inp
, int *out
, int *err
)
2756 char buf
[__PMAX
+ 2 + 5]; /* extra space for quotes & redirection string */
2758 const char *start
= s
;
2761 *d
++ = *s
++; /* copy the 1st character, < or > or a digit */
2762 if ((*start
== '>' || *start
== '1' || *start
== '2')
2766 if (*s
== '>' && *start
!= '>')
2769 else if (*start
== '0' && *s
== '<')
2771 /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */
2774 while (isspace (*s
)) /* skip whitespace before file name */
2776 *d
++ = ' '; /* separate file name with a single space */
2779 /* Copy the file name. */
2782 /* Remove quoting characters from the file name in buf[]. */
2783 if (*s
== '"') /* could support '..' quoting here */
2787 else if (*s
== quote
)
2795 else if (*s
== '\\')
2797 if (s
[1] == '"') /* could support '..' here */
2801 else if (isspace (*s
) && !quote
)
2805 if (d
- buf
>= sizeof (buf
) - 1)
2807 errno
= ENAMETOOLONG
;
2813 /* Windows doesn't allow redirection characters in file names, so we
2814 can bail out early if they use them, or if there's no target file
2815 name after the redirection symbol. */
2816 if (d
[-1] == '>' || d
[-1] == '<')
2821 if (redir_open (buf
, inp
, out
, err
) == 0)
2826 /* Parse the command line for redirection specs and prepare the file
2827 descriptors for the 3 standard streams accordingly. */
2829 redirect_inferior_handles (const char *cmd_orig
, char *cmd
,
2830 int *inp
, int *out
, int *err
)
2832 const char *s
= cmd_orig
;
2835 bool retval
= false;
2837 while (isspace (*s
))
2842 if (*s
== '"') /* could also support '..' quoting here */
2846 else if (*s
== quote
)
2849 else if (*s
== '\\')
2851 if (s
[1] == '"') /* escaped quote char */
2856 /* Process a single redirection candidate. */
2857 if (*s
== '<' || *s
== '>'
2858 || ((*s
== '1' || *s
== '2') && s
[1] == '>')
2859 || (*s
== '0' && s
[1] == '<'))
2861 int skip
= redir_set_redirection (s
, inp
, out
, err
);
2875 #endif /* !__CYGWIN__ */
2877 /* Start an inferior windows child process and sets inferior_ptid to its pid.
2878 EXEC_FILE is the file to run.
2879 ALLARGS is a string containing the arguments to the program.
2880 ENV is the environment vector to pass. Errors reported with error(). */
2883 windows_nat_target::create_inferior (const char *exec_file
,
2884 const std::string
&origallargs
,
2885 char **in_env
, int from_tty
)
2889 cygwin_buf_t real_path
[__PMAX
];
2890 cygwin_buf_t shell
[__PMAX
]; /* Path to shell */
2891 cygwin_buf_t infcwd
[__PMAX
];
2893 cygwin_buf_t
*toexec
;
2894 cygwin_buf_t
*cygallargs
;
2896 char **old_env
= NULL
;
2900 int ostdin
, ostdout
, ostderr
;
2901 #else /* !__CYGWIN__ */
2902 char shell
[__PMAX
]; /* Path to shell */
2904 char *args
, *allargs_copy
;
2905 size_t args_len
, allargs_len
;
2906 int fd_inp
= -1, fd_out
= -1, fd_err
= -1;
2907 HANDLE tty
= INVALID_HANDLE_VALUE
;
2908 bool redirected
= false;
2915 #endif /* !__CYGWIN__ */
2916 const char *allargs
= origallargs
.c_str ();
2917 PROCESS_INFORMATION pi
;
2920 const char *inferior_io_terminal
= get_inferior_io_terminal ();
2923 error (_("No executable specified, use `target exec'."));
2925 const char *inferior_cwd
= get_inferior_cwd ();
2926 std::string expanded_infcwd
;
2927 if (inferior_cwd
!= NULL
)
2929 expanded_infcwd
= gdb_tilde_expand (inferior_cwd
);
2930 /* Mirror slashes on inferior's cwd. */
2931 std::replace (expanded_infcwd
.begin (), expanded_infcwd
.end (),
2933 inferior_cwd
= expanded_infcwd
.c_str ();
2936 memset (&si
, 0, sizeof (si
));
2937 si
.cb
= sizeof (si
);
2940 flags
|= CREATE_NEW_PROCESS_GROUP
;
2943 windows_set_console_info (&si
, &flags
);
2948 flags
|= DEBUG_ONLY_THIS_PROCESS
;
2949 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W
, exec_file
, real_path
,
2950 __PMAX
* sizeof (cygwin_buf_t
)) < 0)
2951 error (_("Error starting executable: %d"), errno
);
2954 len
= mbstowcs (NULL
, allargs
, 0) + 1;
2955 if (len
== (size_t) -1)
2956 error (_("Error starting executable: %d"), errno
);
2957 cygallargs
= (wchar_t *) alloca (len
* sizeof (wchar_t));
2958 mbstowcs (cygallargs
, allargs
, len
);
2959 #else /* !__USEWIDE */
2960 cygallargs
= allargs
;
2966 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W
, sh
, shell
, __PMAX
) < 0)
2967 error (_("Error starting executable via shell: %d"), errno
);
2969 len
= sizeof (L
" -c 'exec '") + mbstowcs (NULL
, exec_file
, 0)
2970 + mbstowcs (NULL
, allargs
, 0) + 2;
2971 cygallargs
= (wchar_t *) alloca (len
* sizeof (wchar_t));
2972 swprintf (cygallargs
, len
, L
" -c 'exec %s %s'", exec_file
, allargs
);
2973 #else /* !__USEWIDE */
2974 len
= (sizeof (" -c 'exec '") + strlen (exec_file
)
2975 + strlen (allargs
) + 2);
2976 cygallargs
= (char *) alloca (len
);
2977 xsnprintf (cygallargs
, len
, " -c 'exec %s %s'", exec_file
, allargs
);
2978 #endif /* __USEWIDE */
2980 flags
|= DEBUG_PROCESS
;
2983 if (inferior_cwd
!= NULL
2984 && cygwin_conv_path (CCP_POSIX_TO_WIN_W
, inferior_cwd
,
2985 infcwd
, strlen (inferior_cwd
)) < 0)
2986 error (_("Error converting inferior cwd: %d"), errno
);
2989 args
= (cygwin_buf_t
*) alloca ((wcslen (toexec
) + wcslen (cygallargs
) + 2)
2990 * sizeof (wchar_t));
2991 wcscpy (args
, toexec
);
2992 wcscat (args
, L
" ");
2993 wcscat (args
, cygallargs
);
2994 #else /* !__USEWIDE */
2995 args
= (cygwin_buf_t
*) alloca (strlen (toexec
) + strlen (cygallargs
) + 2);
2996 strcpy (args
, toexec
);
2998 strcat (args
, cygallargs
);
2999 #endif /* !__USEWIDE */
3001 #ifdef CW_CVT_ENV_TO_WINENV
3002 /* First try to create a direct Win32 copy of the POSIX environment. */
3003 w32_env
= (PWCHAR
) cygwin_internal (CW_CVT_ENV_TO_WINENV
, in_env
);
3004 if (w32_env
!= (PWCHAR
) -1)
3005 flags
|= CREATE_UNICODE_ENVIRONMENT
;
3007 /* If that fails, fall back to old method tweaking GDB's environment. */
3008 #endif /* CW_CVT_ENV_TO_WINENV */
3010 /* Reset all Win32 environment variables to avoid leftover on next run. */
3011 clear_win32_environment (environ
);
3012 /* Prepare the environment vars for CreateProcess. */
3015 cygwin_internal (CW_SYNC_WINENV
);
3019 if (!inferior_io_terminal
)
3020 tty
= ostdin
= ostdout
= ostderr
= -1;
3023 tty
= open (inferior_io_terminal
, O_RDWR
| O_NOCTTY
);
3026 print_sys_errmsg (inferior_io_terminal
, errno
);
3027 ostdin
= ostdout
= ostderr
= -1;
3040 windows_init_thread_list ();
3041 ret
= CreateProcess (0,
3042 args
, /* command line */
3043 NULL
, /* Security */
3045 TRUE
, /* inherit handles */
3046 flags
, /* start flags */
3047 w32_env
, /* environment */
3048 inferior_cwd
!= NULL
? infcwd
: NULL
, /* current
3053 /* Just free the Win32 environment, if it could be created. */
3057 /* Reset all environment variables to avoid leftover on next run. */
3058 clear_win32_environment (in_env
);
3059 /* Restore normal GDB environment variables. */
3061 cygwin_internal (CW_SYNC_WINENV
);
3074 #else /* !__CYGWIN__ */
3075 allargs_len
= strlen (allargs
);
3076 allargs_copy
= strcpy ((char *) alloca (allargs_len
+ 1), allargs
);
3077 if (strpbrk (allargs_copy
, "<>") != NULL
)
3082 redirect_inferior_handles (allargs
, allargs_copy
,
3083 &fd_inp
, &fd_out
, &fd_err
);
3085 warning (_("Error in redirection: %s."), safe_strerror (errno
));
3088 allargs_len
= strlen (allargs_copy
);
3090 /* If not all the standard streams are redirected by the command
3091 line, use inferior_io_terminal for those which aren't. */
3092 if (inferior_io_terminal
3093 && !(fd_inp
>= 0 && fd_out
>= 0 && fd_err
>= 0))
3095 SECURITY_ATTRIBUTES sa
;
3096 sa
.nLength
= sizeof(sa
);
3097 sa
.lpSecurityDescriptor
= 0;
3098 sa
.bInheritHandle
= TRUE
;
3099 tty
= CreateFileA (inferior_io_terminal
, GENERIC_READ
| GENERIC_WRITE
,
3100 0, &sa
, OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, 0);
3101 if (tty
== INVALID_HANDLE_VALUE
)
3102 warning (_("Warning: Failed to open TTY %s, error %#x."),
3103 inferior_io_terminal
, (unsigned) GetLastError ());
3105 if (redirected
|| tty
!= INVALID_HANDLE_VALUE
)
3108 si
.hStdInput
= (HANDLE
) _get_osfhandle (fd_inp
);
3109 else if (tty
!= INVALID_HANDLE_VALUE
)
3112 si
.hStdInput
= GetStdHandle (STD_INPUT_HANDLE
);
3114 si
.hStdOutput
= (HANDLE
) _get_osfhandle (fd_out
);
3115 else if (tty
!= INVALID_HANDLE_VALUE
)
3116 si
.hStdOutput
= tty
;
3118 si
.hStdOutput
= GetStdHandle (STD_OUTPUT_HANDLE
);
3120 si
.hStdError
= (HANDLE
) _get_osfhandle (fd_err
);
3121 else if (tty
!= INVALID_HANDLE_VALUE
)
3124 si
.hStdError
= GetStdHandle (STD_ERROR_HANDLE
);
3125 si
.dwFlags
|= STARTF_USESTDHANDLES
;
3129 /* Build the command line, a space-separated list of tokens where
3130 the first token is the name of the module to be executed.
3131 To avoid ambiguities introduced by spaces in the module name,
3133 args_len
= strlen (toexec
) + 2 /* quotes */ + allargs_len
+ 2;
3134 args
= (char *) alloca (args_len
);
3135 xsnprintf (args
, args_len
, "\"%s\" %s", toexec
, allargs_copy
);
3137 flags
|= DEBUG_ONLY_THIS_PROCESS
;
3139 /* CreateProcess takes the environment list as a null terminated set of
3140 strings (i.e. two nulls terminate the list). */
3142 /* Get total size for env strings. */
3143 for (envlen
= 0, i
= 0; in_env
[i
] && *in_env
[i
]; i
++)
3144 envlen
+= strlen (in_env
[i
]) + 1;
3146 envsize
= sizeof (in_env
[0]) * (i
+ 1);
3147 env
= (char **) alloca (envsize
);
3148 memcpy (env
, in_env
, envsize
);
3149 /* Windows programs expect the environment block to be sorted. */
3150 qsort (env
, i
, sizeof (char *), envvar_cmp
);
3152 w32env
= (char *) alloca (envlen
+ 1);
3154 /* Copy env strings into new buffer. */
3155 for (temp
= w32env
, i
= 0; env
[i
] && *env
[i
]; i
++)
3157 strcpy (temp
, env
[i
]);
3158 temp
+= strlen (temp
) + 1;
3161 /* Final nil string to terminate new env. */
3164 windows_init_thread_list ();
3165 ret
= CreateProcessA (0,
3166 args
, /* command line */
3167 NULL
, /* Security */
3169 TRUE
, /* inherit handles */
3170 flags
, /* start flags */
3171 w32env
, /* environment */
3172 inferior_cwd
, /* current directory */
3175 if (tty
!= INVALID_HANDLE_VALUE
)
3183 #endif /* !__CYGWIN__ */
3186 error (_("Error creating process %s, (error %u)."),
3187 exec_file
, (unsigned) GetLastError ());
3191 if (IsWow64Process (pi
.hProcess
, &wow64
))
3192 wow64_process
= wow64
;
3195 CloseHandle (pi
.hThread
);
3196 CloseHandle (pi
.hProcess
);
3198 if (useshell
&& shell
[0] != '\0')
3203 do_initial_windows_stuff (this, pi
.dwProcessId
, 0);
3205 /* windows_continue (DBG_CONTINUE, -1, 0); */
3209 windows_nat_target::mourn_inferior ()
3211 (void) windows_continue (DBG_CONTINUE
, -1, 0);
3212 x86_cleanup_dregs();
3213 if (open_process_used
)
3215 CHECK (CloseHandle (current_process_handle
));
3216 open_process_used
= 0;
3218 siginfo_er
.ExceptionCode
= 0;
3219 inf_child_target::mourn_inferior ();
3222 /* Send a SIGINT to the process group. This acts just like the user typed a
3223 ^C on the controlling terminal. */
3226 windows_nat_target::interrupt ()
3228 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
3229 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT
, current_event
.dwProcessId
));
3230 registers_changed (); /* refresh register state */
3233 /* Helper for windows_xfer_partial that handles memory transfers.
3234 Arguments are like target_xfer_partial. */
3236 static enum target_xfer_status
3237 windows_xfer_memory (gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
3238 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
3242 DWORD lasterror
= 0;
3244 if (writebuf
!= NULL
)
3246 DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n",
3247 pulongest (len
), core_addr_to_string (memaddr
)));
3248 success
= WriteProcessMemory (current_process_handle
,
3249 (LPVOID
) (uintptr_t) memaddr
, writebuf
,
3252 lasterror
= GetLastError ();
3253 FlushInstructionCache (current_process_handle
,
3254 (LPCVOID
) (uintptr_t) memaddr
, len
);
3258 DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n",
3259 pulongest (len
), core_addr_to_string (memaddr
)));
3260 success
= ReadProcessMemory (current_process_handle
,
3261 (LPCVOID
) (uintptr_t) memaddr
, readbuf
,
3264 lasterror
= GetLastError ();
3266 *xfered_len
= (ULONGEST
) done
;
3267 if (!success
&& lasterror
== ERROR_PARTIAL_COPY
&& done
> 0)
3268 return TARGET_XFER_OK
;
3270 return success
? TARGET_XFER_OK
: TARGET_XFER_E_IO
;
3274 windows_nat_target::kill ()
3276 CHECK (TerminateProcess (current_process_handle
, 0));
3280 if (!windows_continue (DBG_CONTINUE
, -1, 1))
3282 if (!wait_for_debug_event (¤t_event
, INFINITE
))
3284 if (current_event
.dwDebugEventCode
== EXIT_PROCESS_DEBUG_EVENT
)
3288 target_mourn_inferior (inferior_ptid
); /* Or just windows_mourn_inferior? */
3292 windows_nat_target::close ()
3294 DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
3295 inferior_ptid
.pid ()));
3298 /* Convert pid to printable format. */
3300 windows_nat_target::pid_to_str (ptid_t ptid
)
3302 if (ptid
.lwp () != 0)
3303 return string_printf ("Thread %d.0x%lx", ptid
.pid (), ptid
.lwp ());
3305 return normal_pid_to_str (ptid
);
3308 static enum target_xfer_status
3309 windows_xfer_shared_libraries (struct target_ops
*ops
,
3310 enum target_object object
, const char *annex
,
3311 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
3312 ULONGEST offset
, ULONGEST len
,
3313 ULONGEST
*xfered_len
)
3315 struct obstack obstack
;
3321 return TARGET_XFER_E_IO
;
3323 obstack_init (&obstack
);
3324 obstack_grow_str (&obstack
, "<library-list>\n");
3325 for (so
= solib_start
.next
; so
; so
= so
->next
)
3327 lm_info_windows
*li
= (lm_info_windows
*) so
->lm_info
;
3329 windows_xfer_shared_library (so
->so_name
, (CORE_ADDR
)
3330 (uintptr_t) li
->load_addr
,
3332 target_gdbarch (), &obstack
);
3334 obstack_grow_str0 (&obstack
, "</library-list>\n");
3336 buf
= (const char *) obstack_finish (&obstack
);
3337 len_avail
= strlen (buf
);
3338 if (offset
>= len_avail
)
3342 if (len
> len_avail
- offset
)
3343 len
= len_avail
- offset
;
3344 memcpy (readbuf
, buf
+ offset
, len
);
3347 obstack_free (&obstack
, NULL
);
3348 *xfered_len
= (ULONGEST
) len
;
3349 return len
!= 0 ? TARGET_XFER_OK
: TARGET_XFER_EOF
;
3352 /* Helper for windows_nat_target::xfer_partial that handles signal info. */
3354 static enum target_xfer_status
3355 windows_xfer_siginfo (gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
,
3356 ULONGEST
*xfered_len
)
3358 char *buf
= (char *) &siginfo_er
;
3359 size_t bufsize
= sizeof (siginfo_er
);
3362 EXCEPTION_RECORD32 er32
;
3365 buf
= (char *) &er32
;
3366 bufsize
= sizeof (er32
);
3368 er32
.ExceptionCode
= siginfo_er
.ExceptionCode
;
3369 er32
.ExceptionFlags
= siginfo_er
.ExceptionFlags
;
3370 er32
.ExceptionRecord
= (uintptr_t) siginfo_er
.ExceptionRecord
;
3371 er32
.ExceptionAddress
= (uintptr_t) siginfo_er
.ExceptionAddress
;
3372 er32
.NumberParameters
= siginfo_er
.NumberParameters
;
3374 for (i
= 0; i
< EXCEPTION_MAXIMUM_PARAMETERS
; i
++)
3375 er32
.ExceptionInformation
[i
] = siginfo_er
.ExceptionInformation
[i
];
3379 if (siginfo_er
.ExceptionCode
== 0)
3380 return TARGET_XFER_E_IO
;
3382 if (readbuf
== nullptr)
3383 return TARGET_XFER_E_IO
;
3385 if (offset
> bufsize
)
3386 return TARGET_XFER_E_IO
;
3388 if (offset
+ len
> bufsize
)
3389 len
= bufsize
- offset
;
3391 memcpy (readbuf
, buf
+ offset
, len
);
3394 return TARGET_XFER_OK
;
3397 enum target_xfer_status
3398 windows_nat_target::xfer_partial (enum target_object object
,
3399 const char *annex
, gdb_byte
*readbuf
,
3400 const gdb_byte
*writebuf
, ULONGEST offset
,
3401 ULONGEST len
, ULONGEST
*xfered_len
)
3405 case TARGET_OBJECT_MEMORY
:
3406 return windows_xfer_memory (readbuf
, writebuf
, offset
, len
, xfered_len
);
3408 case TARGET_OBJECT_LIBRARIES
:
3409 return windows_xfer_shared_libraries (this, object
, annex
, readbuf
,
3410 writebuf
, offset
, len
, xfered_len
);
3412 case TARGET_OBJECT_SIGNAL_INFO
:
3413 return windows_xfer_siginfo (readbuf
, offset
, len
, xfered_len
);
3416 if (beneath () == NULL
)
3418 /* This can happen when requesting the transfer of unsupported
3419 objects before a program has been started (and therefore
3420 with the current_target having no target beneath). */
3421 return TARGET_XFER_E_IO
;
3423 return beneath ()->xfer_partial (object
, annex
,
3424 readbuf
, writebuf
, offset
, len
,
3429 /* Provide thread local base, i.e. Thread Information Block address.
3430 Returns 1 if ptid is found and sets *ADDR to thread_local_base. */
3433 windows_nat_target::get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
3435 windows_thread_info
*th
;
3437 th
= thread_rec (ptid
, DONT_INVALIDATE_CONTEXT
);
3442 *addr
= th
->thread_local_base
;
3448 windows_nat_target::get_ada_task_ptid (long lwp
, long thread
)
3450 return ptid_t (inferior_ptid
.pid (), lwp
, 0);
3453 /* Implementation of the to_thread_name method. */
3456 windows_nat_target::thread_name (struct thread_info
*thr
)
3458 return thread_rec (thr
->ptid
, DONT_INVALIDATE_CONTEXT
)->name
.get ();
3462 void _initialize_windows_nat ();
3464 _initialize_windows_nat ()
3466 x86_dr_low
.set_control
= cygwin_set_dr7
;
3467 x86_dr_low
.set_addr
= cygwin_set_dr
;
3468 x86_dr_low
.get_addr
= cygwin_get_dr
;
3469 x86_dr_low
.get_status
= cygwin_get_dr6
;
3470 x86_dr_low
.get_control
= cygwin_get_dr7
;
3472 /* x86_dr_low.debug_register_length field is set by
3473 calling x86_set_debug_register_length function
3474 in processor windows specific native file. */
3476 add_inf_child_target (&the_windows_nat_target
);
3479 cygwin_internal (CW_SET_DOS_FILE_WARNING
, 0);
3482 add_com ("signal-event", class_run
, signal_event_command
, _("\
3483 Signal a crashed process with event ID, to allow its debugging.\n\
3484 This command is needed in support of setting up GDB as JIT debugger on \
3485 MS-Windows. The command should be invoked from the GDB command line using \
3486 the '-ex' command-line option. The ID of the event that blocks the \
3487 crashed process will be supplied by the Windows JIT debugging mechanism."));
3490 add_setshow_boolean_cmd ("shell", class_support
, &useshell
, _("\
3491 Set use of shell to start subprocess."), _("\
3492 Show use of shell to start subprocess."), NULL
,
3494 NULL
, /* FIXME: i18n: */
3495 &setlist
, &showlist
);
3497 add_setshow_boolean_cmd ("cygwin-exceptions", class_support
,
3498 &cygwin_exceptions
, _("\
3499 Break when an exception is detected in the Cygwin DLL itself."), _("\
3500 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL
,
3502 NULL
, /* FIXME: i18n: */
3503 &setlist
, &showlist
);
3506 add_setshow_boolean_cmd ("new-console", class_support
, &new_console
, _("\
3507 Set creation of new console when creating child process."), _("\
3508 Show creation of new console when creating child process."), NULL
,
3510 NULL
, /* FIXME: i18n: */
3511 &setlist
, &showlist
);
3513 add_setshow_boolean_cmd ("new-group", class_support
, &new_group
, _("\
3514 Set creation of new group when creating child process."), _("\
3515 Show creation of new group when creating child process."), NULL
,
3517 NULL
, /* FIXME: i18n: */
3518 &setlist
, &showlist
);
3520 add_setshow_boolean_cmd ("debugexec", class_support
, &debug_exec
, _("\
3521 Set whether to display execution in child process."), _("\
3522 Show whether to display execution in child process."), NULL
,
3524 NULL
, /* FIXME: i18n: */
3525 &setlist
, &showlist
);
3527 add_setshow_boolean_cmd ("debugevents", class_support
, &debug_events
, _("\
3528 Set whether to display kernel events in child process."), _("\
3529 Show whether to display kernel events in child process."), NULL
,
3531 NULL
, /* FIXME: i18n: */
3532 &setlist
, &showlist
);
3534 add_setshow_boolean_cmd ("debugmemory", class_support
, &debug_memory
, _("\
3535 Set whether to display memory accesses in child process."), _("\
3536 Show whether to display memory accesses in child process."), NULL
,
3538 NULL
, /* FIXME: i18n: */
3539 &setlist
, &showlist
);
3541 add_setshow_boolean_cmd ("debugexceptions", class_support
,
3542 &debug_exceptions
, _("\
3543 Set whether to display kernel exceptions in child process."), _("\
3544 Show whether to display kernel exceptions in child process."), NULL
,
3546 NULL
, /* FIXME: i18n: */
3547 &setlist
, &showlist
);
3549 init_w32_command_list ();
3551 add_cmd ("selector", class_info
, display_selectors
,
3552 _("Display selectors infos."),
3556 /* Hardware watchpoint support, adapted from go32-nat.c code. */
3558 /* Pass the address ADDR to the inferior in the I'th debug register.
3559 Here we just store the address in dr array, the registers will be
3560 actually set up when windows_continue is called. */
3562 cygwin_set_dr (int i
, CORE_ADDR addr
)
3565 internal_error (__FILE__
, __LINE__
,
3566 _("Invalid register %d in cygwin_set_dr.\n"), i
);
3568 debug_registers_changed
= 1;
3569 debug_registers_used
= 1;
3572 /* Pass the value VAL to the inferior in the DR7 debug control
3573 register. Here we just store the address in D_REGS, the watchpoint
3574 will be actually set up in windows_wait. */
3576 cygwin_set_dr7 (unsigned long val
)
3578 dr
[7] = (CORE_ADDR
) val
;
3579 debug_registers_changed
= 1;
3580 debug_registers_used
= 1;
3583 /* Get the value of debug register I from the inferior. */
3586 cygwin_get_dr (int i
)
3591 /* Get the value of the DR6 debug status register from the inferior.
3592 Here we just return the value stored in dr[6]
3593 by the last call to thread_rec for current_event.dwThreadId id. */
3594 static unsigned long
3595 cygwin_get_dr6 (void)
3597 return (unsigned long) dr
[6];
3600 /* Get the value of the DR7 debug status register from the inferior.
3601 Here we just return the value stored in dr[7] by the last call to
3602 thread_rec for current_event.dwThreadId id. */
3604 static unsigned long
3605 cygwin_get_dr7 (void)
3607 return (unsigned long) dr
[7];
3610 /* Determine if the thread referenced by "ptid" is alive
3611 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
3612 it means that the thread has died. Otherwise it is assumed to be alive. */
3615 windows_nat_target::thread_alive (ptid_t ptid
)
3617 gdb_assert (ptid
.lwp () != 0);
3619 return (WaitForSingleObject (thread_rec (ptid
, DONT_INVALIDATE_CONTEXT
)->h
, 0)
3623 void _initialize_check_for_gdb_ini ();
3625 _initialize_check_for_gdb_ini ()
3628 if (inhibit_gdbinit
)
3631 homedir
= getenv ("HOME");
3635 char *oldini
= (char *) alloca (strlen (homedir
) +
3636 sizeof ("gdb.ini") + 1);
3637 strcpy (oldini
, homedir
);
3638 p
= strchr (oldini
, '\0');
3639 if (p
> oldini
&& !IS_DIR_SEPARATOR (p
[-1]))
3641 strcpy (p
, "gdb.ini");
3642 if (access (oldini
, 0) == 0)
3644 int len
= strlen (oldini
);
3645 char *newini
= (char *) alloca (len
+ 2);
3647 xsnprintf (newini
, len
+ 2, "%.*s.gdbinit",
3648 (int) (len
- (sizeof ("gdb.ini") - 1)), oldini
);
3649 warning (_("obsolete '%s' found. Rename to '%s'."), oldini
, newini
);
3654 /* Define dummy functions which always return error for the rare cases where
3655 these functions could not be found. */
3657 bad_DebugActiveProcessStop (DWORD w
)
3662 bad_DebugBreakProcess (HANDLE w
)
3667 bad_DebugSetProcessKillOnExit (BOOL w
)
3672 bad_EnumProcessModules (HANDLE w
, HMODULE
*x
, DWORD y
, LPDWORD z
)
3679 bad_GetModuleFileNameExW (HANDLE w
, HMODULE x
, LPWSTR y
, DWORD z
)
3685 bad_GetModuleFileNameExA (HANDLE w
, HMODULE x
, LPSTR y
, DWORD z
)
3692 bad_GetModuleInformation (HANDLE w
, HMODULE x
, LPMODULEINFO y
, DWORD z
)
3698 bad_OpenProcessToken (HANDLE w
, DWORD x
, PHANDLE y
)
3704 bad_GetCurrentConsoleFont (HANDLE w
, BOOL bMaxWindow
, CONSOLE_FONT_INFO
*f
)
3710 bad_GetConsoleFontSize (HANDLE w
, DWORD nFont
)
3718 /* Load any functions which may not be available in ancient versions
3721 void _initialize_loadable ();
3723 _initialize_loadable ()
3727 #define GPA(m, func) \
3728 func = (func ## _ftype *) GetProcAddress (m, #func)
3730 hm
= LoadLibrary ("kernel32.dll");
3733 GPA (hm
, DebugActiveProcessStop
);
3734 GPA (hm
, DebugBreakProcess
);
3735 GPA (hm
, DebugSetProcessKillOnExit
);
3736 GPA (hm
, GetConsoleFontSize
);
3737 GPA (hm
, DebugActiveProcessStop
);
3738 GPA (hm
, GetCurrentConsoleFont
);
3740 GPA (hm
, Wow64SuspendThread
);
3741 GPA (hm
, Wow64GetThreadContext
);
3742 GPA (hm
, Wow64SetThreadContext
);
3743 GPA (hm
, Wow64GetThreadSelectorEntry
);
3747 /* Set variables to dummy versions of these processes if the function
3748 wasn't found in kernel32.dll. */
3749 if (!DebugBreakProcess
)
3750 DebugBreakProcess
= bad_DebugBreakProcess
;
3751 if (!DebugActiveProcessStop
|| !DebugSetProcessKillOnExit
)
3753 DebugActiveProcessStop
= bad_DebugActiveProcessStop
;
3754 DebugSetProcessKillOnExit
= bad_DebugSetProcessKillOnExit
;
3756 if (!GetConsoleFontSize
)
3757 GetConsoleFontSize
= bad_GetConsoleFontSize
;
3758 if (!GetCurrentConsoleFont
)
3759 GetCurrentConsoleFont
= bad_GetCurrentConsoleFont
;
3761 /* Load optional functions used for retrieving filename information
3762 associated with the currently debugged process or its dlls. */
3763 hm
= LoadLibrary ("psapi.dll");
3766 GPA (hm
, EnumProcessModules
);
3768 GPA (hm
, EnumProcessModulesEx
);
3770 GPA (hm
, GetModuleInformation
);
3771 GetModuleFileNameEx
= (GetModuleFileNameEx_ftype
*)
3772 GetProcAddress (hm
, GetModuleFileNameEx_name
);
3775 if (!EnumProcessModules
|| !GetModuleInformation
|| !GetModuleFileNameEx
)
3777 /* Set variables to dummy versions of these processes if the function
3778 wasn't found in psapi.dll. */
3779 EnumProcessModules
= bad_EnumProcessModules
;
3780 GetModuleInformation
= bad_GetModuleInformation
;
3781 GetModuleFileNameEx
= bad_GetModuleFileNameEx
;
3782 /* This will probably fail on Windows 9x/Me. Let the user know
3783 that we're missing some functionality. */
3785 cannot automatically find executable file or library to read symbols.\n\
3786 Use \"file\" or \"dll\" command to load executable/libraries directly."));
3789 hm
= LoadLibrary ("advapi32.dll");
3792 GPA (hm
, OpenProcessToken
);
3793 GPA (hm
, LookupPrivilegeValueA
);
3794 GPA (hm
, AdjustTokenPrivileges
);
3795 /* Only need to set one of these since if OpenProcessToken fails nothing
3797 if (!OpenProcessToken
|| !LookupPrivilegeValueA
3798 || !AdjustTokenPrivileges
)
3799 OpenProcessToken
= bad_OpenProcessToken
;