1 /* Target-vector operations for controlling windows child processes, for GDB.
3 Copyright (C) 1995-2018 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 "gdb_tilde_expand.h"
72 #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
73 #define DebugActiveProcessStop dyn_DebugActiveProcessStop
74 #define DebugBreakProcess dyn_DebugBreakProcess
75 #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
76 #define EnumProcessModules dyn_EnumProcessModules
77 #define GetModuleInformation dyn_GetModuleInformation
78 #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
79 #define OpenProcessToken dyn_OpenProcessToken
80 #define GetConsoleFontSize dyn_GetConsoleFontSize
81 #define GetCurrentConsoleFont dyn_GetCurrentConsoleFont
83 typedef BOOL WINAPI (AdjustTokenPrivileges_ftype) (HANDLE, BOOL,
85 DWORD, PTOKEN_PRIVILEGES,
87 static AdjustTokenPrivileges_ftype *AdjustTokenPrivileges;
89 typedef BOOL WINAPI (DebugActiveProcessStop_ftype) (DWORD);
90 static DebugActiveProcessStop_ftype *DebugActiveProcessStop;
92 typedef BOOL WINAPI (DebugBreakProcess_ftype) (HANDLE);
93 static DebugBreakProcess_ftype *DebugBreakProcess;
95 typedef BOOL WINAPI (DebugSetProcessKillOnExit_ftype) (BOOL);
96 static DebugSetProcessKillOnExit_ftype *DebugSetProcessKillOnExit;
98 typedef BOOL WINAPI (EnumProcessModules_ftype) (HANDLE, HMODULE *, DWORD,
100 static EnumProcessModules_ftype *EnumProcessModules;
102 typedef BOOL WINAPI (GetModuleInformation_ftype) (HANDLE, HMODULE,
103 LPMODULEINFO, DWORD);
104 static GetModuleInformation_ftype *GetModuleInformation;
106 typedef BOOL WINAPI (LookupPrivilegeValueA_ftype) (LPCSTR, LPCSTR, PLUID);
107 static LookupPrivilegeValueA_ftype *LookupPrivilegeValueA;
109 typedef BOOL WINAPI (OpenProcessToken_ftype) (HANDLE, DWORD, PHANDLE);
110 static OpenProcessToken_ftype *OpenProcessToken;
112 typedef BOOL WINAPI (GetCurrentConsoleFont_ftype) (HANDLE, BOOL,
113 CONSOLE_FONT_INFO *);
114 static GetCurrentConsoleFont_ftype *GetCurrentConsoleFont;
116 typedef COORD WINAPI (GetConsoleFontSize_ftype) (HANDLE, DWORD);
117 static GetConsoleFontSize_ftype *GetConsoleFontSize;
121 #undef GetModuleFileNameEx
124 # define __PMAX (MAX_PATH + 1)
125 typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, LPSTR, DWORD);
126 static GetModuleFileNameEx_ftype *GetModuleFileNameEx;
127 # define STARTUPINFO STARTUPINFOA
128 # define CreateProcess CreateProcessA
129 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
130 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
132 # define __PMAX PATH_MAX
133 /* The starting and ending address of the cygwin1.dll text segment. */
134 static CORE_ADDR cygwin_load_start;
135 static CORE_ADDR cygwin_load_end;
137 typedef wchar_t cygwin_buf_t;
138 typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE,
140 static GetModuleFileNameEx_ftype *GetModuleFileNameEx;
141 # define STARTUPINFO STARTUPINFOW
142 # define CreateProcess CreateProcessW
143 # define GetModuleFileNameEx_name "GetModuleFileNameExW"
144 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW
147 static int have_saved_context; /* True if we've saved context from a
149 static CONTEXT saved_context; /* Containes the saved context from a
152 /* If we're not using the old Cygwin header file set, define the
153 following which never should have been in the generic Win32 API
154 headers in the first place since they were our own invention... */
155 #ifndef _GNU_H_WINDOWS_H
158 FLAG_TRACE_BIT = 0x100,
162 #ifndef CONTEXT_EXTENDED_REGISTERS
163 /* This macro is only defined on ia32. It only makes sense on this target,
164 so define it as zero if not already defined. */
165 #define CONTEXT_EXTENDED_REGISTERS 0
168 #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \
169 | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \
170 | CONTEXT_EXTENDED_REGISTERS
172 static uintptr_t dr[8];
173 static int debug_registers_changed;
174 static int debug_registers_used;
176 static int windows_initialization_done;
177 #define DR6_CLEAR_VALUE 0xffff0ff0
179 /* The exception thrown by a program to tell the debugger the name of
180 a thread. The exception record contains an ID of a thread and a
181 name to give it. This exception has no documented name, but MSDN
182 dubs it "MS_VC_EXCEPTION" in one code example. */
183 #define MS_VC_EXCEPTION 0x406d1388
187 HANDLE_EXCEPTION_UNHANDLED = 0,
188 HANDLE_EXCEPTION_HANDLED,
189 HANDLE_EXCEPTION_IGNORED
190 } handle_exception_result;
192 /* The string sent by cygwin when it processes a signal.
193 FIXME: This should be in a cygwin include file. */
194 #ifndef _CYGWIN_SIGNAL_STRING
195 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
198 #define CHECK(x) check (x, __FILE__,__LINE__)
199 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
200 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
201 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
202 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
204 static void cygwin_set_dr (int i, CORE_ADDR addr);
205 static void cygwin_set_dr7 (unsigned long val);
206 static CORE_ADDR cygwin_get_dr (int i);
207 static unsigned long cygwin_get_dr6 (void);
208 static unsigned long cygwin_get_dr7 (void);
210 static enum gdb_signal last_sig = GDB_SIGNAL_0;
211 /* Set if a signal was received from the debugged process. */
213 /* Thread information structure used to track information that is
214 not available in gdb's thread structure. */
215 typedef struct windows_thread_info_struct
217 struct windows_thread_info_struct *next;
220 CORE_ADDR thread_local_base;
229 static windows_thread_info thread_head;
231 /* The process and thread handles for the above context. */
233 static DEBUG_EVENT current_event; /* The current debug event from
235 static HANDLE current_process_handle; /* Currently executing process */
236 static windows_thread_info *current_thread; /* Info on currently selected thread */
237 static DWORD main_thread_id; /* Thread ID of the main thread */
239 /* Counts of things. */
240 static int exception_count = 0;
241 static int event_count = 0;
242 static int saw_create;
243 static int open_process_used = 0;
246 static int new_console = 0;
248 static int cygwin_exceptions = 0;
250 static int new_group = 1;
251 static int debug_exec = 0; /* show execution */
252 static int debug_events = 0; /* show events from kernel */
253 static int debug_memory = 0; /* show target memory accesses */
254 static int debug_exceptions = 0; /* show target exceptions */
255 static int useshell = 0; /* use shell for subprocesses */
257 /* This vector maps GDB's idea of a register's number into an offset
258 in the windows exception context vector.
260 It also contains the bit mask needed to load the register in question.
262 The contents of this table can only be computed by the units
263 that provide CPU-specific support for Windows native debugging.
264 These units should set the table by calling
265 windows_set_context_register_offsets.
267 One day we could read a reg, we could inspect the context we
268 already have loaded, if it doesn't have the bit set that we need,
269 we read that set of registers in using GetThreadContext. If the
270 context already contains what we need, we just unpack it. Then to
271 write a register, first we have to ensure that the context contains
272 the other regs of the group, and then we copy the info in and set
275 static const int *mappings;
277 /* The function to use in order to determine whether a register is
278 a segment register or not. */
279 static segment_register_p_ftype *segment_register_p;
281 /* This vector maps the target's idea of an exception (extracted
282 from the DEBUG_EVENT structure) to GDB's idea. */
284 struct xlate_exception
290 static const struct xlate_exception
293 {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV},
294 {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV},
295 {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP},
296 {DBG_CONTROL_C, GDB_SIGNAL_INT},
297 {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP},
298 {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE},
299 {-1, GDB_SIGNAL_UNKNOWN}};
302 struct windows_nat_target final : public x86_nat_target<inf_child_target>
304 void close () override;
306 void attach (const char *, int) override;
308 bool attach_no_wait () override
311 void detach (inferior *, int) override;
313 void resume (ptid_t, int , enum gdb_signal) override;
315 ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
317 void fetch_registers (struct regcache *, int) override;
318 void store_registers (struct regcache *, int) override;
320 enum target_xfer_status xfer_partial (enum target_object object,
323 const gdb_byte *writebuf,
324 ULONGEST offset, ULONGEST len,
325 ULONGEST *xfered_len) override;
327 void files_info () override;
329 void kill () override;
331 void create_inferior (const char *, const std::string &,
332 char **, int) override;
334 void mourn_inferior () override;
336 bool thread_alive (ptid_t ptid) override;
338 const char *pid_to_str (ptid_t) override;
340 void interrupt () override;
342 char *pid_to_exec_file (int pid) override;
344 ptid_t get_ada_task_ptid (long lwp, long thread) override;
346 bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override;
348 const char *thread_name (struct thread_info *) override;
351 static windows_nat_target the_windows_nat_target;
353 /* Set the MAPPINGS static global to OFFSETS.
354 See the description of MAPPINGS for more details. */
357 windows_set_context_register_offsets (const int *offsets)
362 /* See windows-nat.h. */
365 windows_set_segment_register_p (segment_register_p_ftype *fun)
367 segment_register_p = fun;
371 check (BOOL ok, const char *file, int line)
374 printf_filtered ("error return %s:%d was %u\n", file, line,
375 (unsigned) GetLastError ());
378 /* Find a thread record given a thread id. If GET_CONTEXT is not 0,
379 then also retrieve the context for this thread. If GET_CONTEXT is
380 negative, then don't suspend the thread. */
381 static windows_thread_info *
382 thread_rec (DWORD id, int get_context)
384 windows_thread_info *th;
386 for (th = &thread_head; (th = th->next) != NULL;)
389 if (!th->suspended && get_context)
391 if (get_context > 0 && id != current_event.dwThreadId)
393 if (SuspendThread (th->h) == (DWORD) -1)
395 DWORD err = GetLastError ();
397 /* We get Access Denied (5) when trying to suspend
398 threads that Windows started on behalf of the
399 debuggee, usually when those threads are just
401 We can get Invalid Handle (6) if the main thread
403 if (err != ERROR_INVALID_HANDLE
404 && err != ERROR_ACCESS_DENIED)
405 warning (_("SuspendThread (tid=0x%x) failed."
407 (unsigned) id, (unsigned) err);
413 else if (get_context < 0)
415 th->reload_context = 1;
423 /* Add a thread to the thread list. */
424 static windows_thread_info *
425 windows_add_thread (ptid_t ptid, HANDLE h, void *tlb)
427 windows_thread_info *th;
430 gdb_assert (ptid.tid () != 0);
434 if ((th = thread_rec (id, FALSE)))
437 th = XCNEW (windows_thread_info);
440 th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
441 th->next = thread_head.next;
442 thread_head.next = th;
444 /* Set the debug registers for the new thread if they are used. */
445 if (debug_registers_used)
447 /* Only change the value of the debug registers. */
448 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
449 CHECK (GetThreadContext (th->h, &th->context));
450 th->context.Dr0 = dr[0];
451 th->context.Dr1 = dr[1];
452 th->context.Dr2 = dr[2];
453 th->context.Dr3 = dr[3];
454 th->context.Dr6 = DR6_CLEAR_VALUE;
455 th->context.Dr7 = dr[7];
456 CHECK (SetThreadContext (th->h, &th->context));
457 th->context.ContextFlags = 0;
462 /* Clear out any old thread list and reinitialize it to a
465 windows_init_thread_list (void)
467 windows_thread_info *th = &thread_head;
469 DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
471 while (th->next != NULL)
473 windows_thread_info *here = th->next;
474 th->next = here->next;
477 thread_head.next = NULL;
480 /* Delete a thread from the list of threads. */
482 windows_delete_thread (ptid_t ptid, DWORD exit_code)
484 windows_thread_info *th;
487 gdb_assert (ptid.tid () != 0);
492 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
493 else if (print_thread_events && id != main_thread_id)
494 printf_unfiltered (_("[%s exited with code %u]\n"),
495 target_pid_to_str (ptid), (unsigned) exit_code);
496 delete_thread (find_thread_ptid (ptid));
498 for (th = &thread_head;
499 th->next != NULL && th->next->id != id;
503 if (th->next != NULL)
505 windows_thread_info *here = th->next;
506 th->next = here->next;
512 /* Fetches register number R from the given windows_thread_info,
513 and supplies its value to the given regcache.
515 This function assumes that R is non-negative. A failed assertion
516 is raised if that is not true.
518 This function assumes that TH->RELOAD_CONTEXT is not set, meaning
519 that the windows_thread_info has an up-to-date context. A failed
520 assertion is raised if that assumption is violated. */
523 windows_fetch_one_register (struct regcache *regcache,
524 windows_thread_info *th, int r)
527 gdb_assert (!th->reload_context);
529 char *context_offset = ((char *) &th->context) + mappings[r];
530 struct gdbarch *gdbarch = regcache->arch ();
531 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
533 if (r == I387_FISEG_REGNUM (tdep))
535 long l = *((long *) context_offset) & 0xffff;
536 regcache->raw_supply (r, (char *) &l);
538 else if (r == I387_FOP_REGNUM (tdep))
540 long l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
541 regcache->raw_supply (r, (char *) &l);
543 else if (segment_register_p (r))
545 /* GDB treats segment registers as 32bit registers, but they are
546 in fact only 16 bits long. Make sure we do not read extra
547 bits from our source buffer. */
548 long l = *((long *) context_offset) & 0xffff;
549 regcache->raw_supply (r, (char *) &l);
552 regcache->raw_supply (r, context_offset);
556 windows_nat_target::fetch_registers (struct regcache *regcache, int r)
558 DWORD pid = regcache->ptid ().tid ();
559 windows_thread_info *th = thread_rec (pid, TRUE);
561 /* Check if TH exists. Windows sometimes uses a non-existent
562 thread id in its events. */
566 if (th->reload_context)
569 if (have_saved_context)
571 /* Lie about where the program actually is stopped since
572 cygwin has informed us that we should consider the signal
573 to have occurred at another location which is stored in
575 memcpy (&th->context, &saved_context,
576 __COPY_CONTEXT_SIZE);
577 have_saved_context = 0;
582 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
583 CHECK (GetThreadContext (th->h, &th->context));
584 /* Copy dr values from that thread.
585 But only if there were not modified since last stop.
587 if (!debug_registers_changed)
589 dr[0] = th->context.Dr0;
590 dr[1] = th->context.Dr1;
591 dr[2] = th->context.Dr2;
592 dr[3] = th->context.Dr3;
593 dr[6] = th->context.Dr6;
594 dr[7] = th->context.Dr7;
597 th->reload_context = 0;
601 for (r = 0; r < gdbarch_num_regs (regcache->arch()); r++)
602 windows_fetch_one_register (regcache, th, r);
604 windows_fetch_one_register (regcache, th, r);
607 /* Collect the register number R from the given regcache, and store
608 its value into the corresponding area of the given thread's context.
610 This function assumes that R is non-negative. A failed assertion
611 assertion is raised if that is not true. */
614 windows_store_one_register (const struct regcache *regcache,
615 windows_thread_info *th, int r)
619 regcache->raw_collect (r, ((char *) &th->context) + mappings[r]);
622 /* Store a new register value into the context of the thread tied to
626 windows_nat_target::store_registers (struct regcache *regcache, int r)
628 DWORD pid = regcache->ptid ().tid ();
629 windows_thread_info *th = thread_rec (pid, TRUE);
631 /* Check if TH exists. Windows sometimes uses a non-existent
632 thread id in its events. */
637 for (r = 0; r < gdbarch_num_regs (regcache->arch ()); r++)
638 windows_store_one_register (regcache, th, r);
640 windows_store_one_register (regcache, th, r);
643 /* Encapsulate the information required in a call to
644 symbol_file_add_args. */
645 struct safe_symbol_file_add_args
649 section_addr_info *addrs;
652 struct ui_file *err, *out;
656 /* Maintain a linked list of "so" information. */
657 struct lm_info_windows : public lm_info_base
659 LPVOID load_addr = 0;
662 static struct so_list solib_start, *solib_end;
664 static struct so_list *
665 windows_make_so (const char *name, LPVOID load_addr)
672 WIN32_FIND_DATA w32_fd;
673 HANDLE h = FindFirstFile(name, &w32_fd);
675 if (h == INVALID_HANDLE_VALUE)
681 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
683 p = strrchr (buf, '\\');
686 SetCurrentDirectory (buf);
687 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
688 SetCurrentDirectory (cwd);
691 if (strcasecmp (buf, "ntdll.dll") == 0)
693 GetSystemDirectory (buf, sizeof (buf));
694 strcat (buf, "\\ntdll.dll");
697 cygwin_buf_t buf[__PMAX];
700 if (access (name, F_OK) != 0)
702 if (strcasecmp (name, "ntdll.dll") == 0)
705 GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t));
706 wcscat (buf, L"\\ntdll.dll");
710 GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t));
711 strcat (buf, "\\ntdll.dll");
716 so = XCNEW (struct so_list);
717 lm_info_windows *li = new lm_info_windows;
719 li->load_addr = load_addr;
720 strcpy (so->so_original_name, name);
722 strcpy (so->so_name, buf);
725 cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name,
726 SO_NAME_MAX_PATH_SIZE);
729 char *rname = realpath (name, NULL);
730 if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE)
732 strcpy (so->so_name, rname);
736 error (_("dll path too long"));
738 /* Record cygwin1.dll .text start/end. */
739 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
740 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
742 asection *text = NULL;
745 gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->so_name, "pei-i386", -1));
750 if (bfd_check_format (abfd.get (), bfd_object))
751 text = bfd_get_section_by_name (abfd.get (), ".text");
756 /* The symbols in a dll are offset by 0x1000, which is the
757 offset from 0 of the first byte in an image - because of the
758 file header and the section alignment. */
759 cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *)
761 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd.get (),
770 get_image_name (HANDLE h, void *address, int unicode)
773 static char buf[__PMAX];
775 static char buf[(2 * __PMAX) + 1];
777 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
783 /* Attempt to read the name of the dll that was detected.
784 This is documented to work only when actively debugging
785 a program. It will not work for attached processes. */
789 /* See if we could read the address of a string, and that the
790 address isn't null. */
791 if (!ReadProcessMemory (h, address, &address_ptr,
792 sizeof (address_ptr), &done)
793 || done != sizeof (address_ptr) || !address_ptr)
796 /* Find the length of the string. */
797 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
798 && (b[0] != 0 || b[size - 1] != 0) && done == size)
802 ReadProcessMemory (h, address_ptr, buf, len, &done);
805 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
806 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
809 wcstombs (buf, unicode_address, __PMAX);
811 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf,
819 /* Handle a DLL load event, and return 1.
821 This function assumes that this event did not occur during inferior
822 initialization, where their event info may be incomplete (see
823 do_initial_windows_stuff and windows_add_all_dlls for more info
824 on how we handle DLL loading during that phase). */
829 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
832 /* Try getting the DLL name via the lpImageName field of the event.
833 Note that Microsoft documents this fields as strictly optional,
834 in the sense that it might be NULL. And the first DLL event in
835 particular is explicitly documented as "likely not pass[ed]"
836 (source: MSDN LOAD_DLL_DEBUG_INFO structure). */
837 dll_name = get_image_name (current_process_handle,
838 event->lpImageName, event->fUnicode);
842 solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
843 solib_end = solib_end->next;
845 lm_info_windows *li = (lm_info_windows *) solib_end->lm_info;
847 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
848 host_address_to_string (li->load_addr)));
852 windows_free_so (struct so_list *so)
854 lm_info_windows *li = (lm_info_windows *) so->lm_info;
860 /* Handle a DLL unload event.
861 Return 1 if successful, or zero otherwise.
863 This function assumes that this event did not occur during inferior
864 initialization, where their event info may be incomplete (see
865 do_initial_windows_stuff and windows_add_all_dlls for more info
866 on how we handle DLL loading during that phase). */
871 LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
874 for (so = &solib_start; so->next != NULL; so = so->next)
876 lm_info_windows *li_next = (lm_info_windows *) so->next->lm_info;
878 if (li_next->load_addr == lpBaseOfDll)
880 struct so_list *sodel = so->next;
882 so->next = sodel->next;
885 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
887 windows_free_so (sodel);
892 /* We did not find any DLL that was previously loaded at this address,
893 so register a complaint. We do not report an error, because we have
894 observed that this may be happening under some circumstances. For
895 instance, running 32bit applications on x64 Windows causes us to receive
896 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these
897 events are apparently caused by the WOW layer, the interface between
898 32bit and 64bit worlds). */
899 complaint (_("dll starting at %s not found."),
900 host_address_to_string (lpBaseOfDll));
903 /* Call FUNC wrapped in a TRY/CATCH that swallows all GDB
907 catch_errors (void (*func) ())
913 CATCH (ex, RETURN_MASK_ALL)
915 exception_print (gdb_stderr, ex);
920 /* Clear list of loaded DLLs. */
922 windows_clear_solib (void)
924 solib_start.next = NULL;
925 solib_end = &solib_start;
929 signal_event_command (const char *args, int from_tty)
931 uintptr_t event_id = 0;
932 char *endargs = NULL;
935 error (_("signal-event requires an argument (integer event id)"));
937 event_id = strtoumax (args, &endargs, 10);
939 if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) ||
940 ((HANDLE) event_id == INVALID_HANDLE_VALUE))
941 error (_("Failed to convert `%s' to event id"), args);
943 SetEvent ((HANDLE) event_id);
944 CloseHandle ((HANDLE) event_id);
947 /* Handle DEBUG_STRING output from child process.
948 Cygwin prepends its messages with a "cygwin:". Interpret this as
949 a Cygwin signal. Otherwise just print the string as a warning. */
951 handle_output_debug_string (struct target_waitstatus *ourstatus)
953 gdb::unique_xmalloc_ptr<char> s;
956 if (!target_read_string
957 ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
959 || !s || !*(s.get ()))
961 else if (!startswith (s.get (), _CYGWIN_SIGNAL_STRING))
964 if (!startswith (s.get (), "cYg"))
967 char *p = strchr (s.get (), '\0');
969 if (p > s.get () && *--p == '\n')
971 warning (("%s"), s.get ());
977 /* Got a cygwin signal marker. A cygwin signal is followed by
978 the signal number itself and then optionally followed by the
979 thread id and address to saved context within the DLL. If
980 these are supplied, then the given thread is assumed to have
981 issued the signal and the context from the thread is assumed
982 to be stored at the given address in the inferior. Tell gdb
983 to treat this like a real signal. */
985 int sig = strtol (s.get () + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
986 gdb_signal gotasig = gdb_signal_from_host (sig);
988 ourstatus->value.sig = gotasig;
994 ourstatus->kind = TARGET_WAITKIND_STOPPED;
995 retval = strtoul (p, &p, 0);
997 retval = main_thread_id;
998 else if ((x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0))
999 && ReadProcessMemory (current_process_handle, x,
1001 __COPY_CONTEXT_SIZE, &n)
1002 && n == __COPY_CONTEXT_SIZE)
1003 have_saved_context = 1;
1012 display_selector (HANDLE thread, DWORD sel)
1015 if (GetThreadSelectorEntry (thread, sel, &info))
1018 printf_filtered ("0x%03x: ", (unsigned) sel);
1019 if (!info.HighWord.Bits.Pres)
1021 puts_filtered ("Segment not present\n");
1024 base = (info.HighWord.Bits.BaseHi << 24) +
1025 (info.HighWord.Bits.BaseMid << 16)
1027 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
1028 if (info.HighWord.Bits.Granularity)
1029 limit = (limit << 12) | 0xfff;
1030 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
1031 if (info.HighWord.Bits.Default_Big)
1032 puts_filtered(" 32-bit ");
1034 puts_filtered(" 16-bit ");
1035 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
1038 puts_filtered ("Data (Read-Only, Exp-up");
1041 puts_filtered ("Data (Read/Write, Exp-up");
1044 puts_filtered ("Unused segment (");
1047 puts_filtered ("Data (Read/Write, Exp-down");
1050 puts_filtered ("Code (Exec-Only, N.Conf");
1053 puts_filtered ("Code (Exec/Read, N.Conf");
1056 puts_filtered ("Code (Exec-Only, Conf");
1059 puts_filtered ("Code (Exec/Read, Conf");
1062 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
1064 if ((info.HighWord.Bits.Type & 0x1) == 0)
1065 puts_filtered(", N.Acc");
1066 puts_filtered (")\n");
1067 if ((info.HighWord.Bits.Type & 0x10) == 0)
1068 puts_filtered("System selector ");
1069 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
1070 if (info.HighWord.Bits.Granularity)
1071 puts_filtered ("Page granular.\n");
1073 puts_filtered ("Byte granular.\n");
1078 DWORD err = GetLastError ();
1079 if (err == ERROR_NOT_SUPPORTED)
1080 printf_filtered ("Function not supported\n");
1082 printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel);
1088 display_selectors (const char * args, int from_tty)
1090 if (!current_thread)
1092 puts_filtered ("Impossible to display selectors now.\n");
1098 puts_filtered ("Selector $cs\n");
1099 display_selector (current_thread->h,
1100 current_thread->context.SegCs);
1101 puts_filtered ("Selector $ds\n");
1102 display_selector (current_thread->h,
1103 current_thread->context.SegDs);
1104 puts_filtered ("Selector $es\n");
1105 display_selector (current_thread->h,
1106 current_thread->context.SegEs);
1107 puts_filtered ("Selector $ss\n");
1108 display_selector (current_thread->h,
1109 current_thread->context.SegSs);
1110 puts_filtered ("Selector $fs\n");
1111 display_selector (current_thread->h,
1112 current_thread->context.SegFs);
1113 puts_filtered ("Selector $gs\n");
1114 display_selector (current_thread->h,
1115 current_thread->context.SegGs);
1120 sel = parse_and_eval_long (args);
1121 printf_filtered ("Selector \"%s\"\n",args);
1122 display_selector (current_thread->h, sel);
1126 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
1127 printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
1128 host_address_to_string (\
1129 current_event.u.Exception.ExceptionRecord.ExceptionAddress))
1131 static handle_exception_result
1132 handle_exception (struct target_waitstatus *ourstatus)
1134 EXCEPTION_RECORD *rec = ¤t_event.u.Exception.ExceptionRecord;
1135 DWORD code = rec->ExceptionCode;
1136 handle_exception_result result = HANDLE_EXCEPTION_HANDLED;
1138 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1140 /* Record the context of the current thread. */
1141 thread_rec (current_event.dwThreadId, -1);
1145 case EXCEPTION_ACCESS_VIOLATION:
1146 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1147 ourstatus->value.sig = GDB_SIGNAL_SEGV;
1150 /* See if the access violation happened within the cygwin DLL
1151 itself. Cygwin uses a kind of exception handling to deal
1152 with passed-in invalid addresses. gdb should not treat
1153 these as real SEGVs since they will be silently handled by
1154 cygwin. A real SEGV will (theoretically) be caught by
1155 cygwin later in the process and will be sent as a
1156 cygwin-specific-signal. So, ignore SEGVs if they show up
1157 within the text segment of the DLL itself. */
1159 CORE_ADDR addr = (CORE_ADDR) (uintptr_t) rec->ExceptionAddress;
1161 if ((!cygwin_exceptions && (addr >= cygwin_load_start
1162 && addr < cygwin_load_end))
1163 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1164 && startswith (fn, "KERNEL32!IsBad")))
1165 return HANDLE_EXCEPTION_UNHANDLED;
1169 case STATUS_STACK_OVERFLOW:
1170 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1171 ourstatus->value.sig = GDB_SIGNAL_SEGV;
1173 case STATUS_FLOAT_DENORMAL_OPERAND:
1174 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1175 ourstatus->value.sig = GDB_SIGNAL_FPE;
1177 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1178 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1179 ourstatus->value.sig = GDB_SIGNAL_FPE;
1181 case STATUS_FLOAT_INEXACT_RESULT:
1182 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1183 ourstatus->value.sig = GDB_SIGNAL_FPE;
1185 case STATUS_FLOAT_INVALID_OPERATION:
1186 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1187 ourstatus->value.sig = GDB_SIGNAL_FPE;
1189 case STATUS_FLOAT_OVERFLOW:
1190 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1191 ourstatus->value.sig = GDB_SIGNAL_FPE;
1193 case STATUS_FLOAT_STACK_CHECK:
1194 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1195 ourstatus->value.sig = GDB_SIGNAL_FPE;
1197 case STATUS_FLOAT_UNDERFLOW:
1198 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1199 ourstatus->value.sig = GDB_SIGNAL_FPE;
1201 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1202 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1203 ourstatus->value.sig = GDB_SIGNAL_FPE;
1205 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1206 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1207 ourstatus->value.sig = GDB_SIGNAL_FPE;
1209 case STATUS_INTEGER_OVERFLOW:
1210 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1211 ourstatus->value.sig = GDB_SIGNAL_FPE;
1213 case EXCEPTION_BREAKPOINT:
1214 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1215 ourstatus->value.sig = GDB_SIGNAL_TRAP;
1218 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1219 ourstatus->value.sig = GDB_SIGNAL_INT;
1221 case DBG_CONTROL_BREAK:
1222 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1223 ourstatus->value.sig = GDB_SIGNAL_INT;
1225 case EXCEPTION_SINGLE_STEP:
1226 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1227 ourstatus->value.sig = GDB_SIGNAL_TRAP;
1229 case EXCEPTION_ILLEGAL_INSTRUCTION:
1230 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1231 ourstatus->value.sig = GDB_SIGNAL_ILL;
1233 case EXCEPTION_PRIV_INSTRUCTION:
1234 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1235 ourstatus->value.sig = GDB_SIGNAL_ILL;
1237 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1238 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1239 ourstatus->value.sig = GDB_SIGNAL_ILL;
1241 case MS_VC_EXCEPTION:
1242 if (rec->NumberParameters >= 3
1243 && (rec->ExceptionInformation[0] & 0xffffffff) == 0x1000)
1245 DWORD named_thread_id;
1246 windows_thread_info *named_thread;
1247 CORE_ADDR thread_name_target;
1249 DEBUG_EXCEPTION_SIMPLE ("MS_VC_EXCEPTION");
1251 thread_name_target = rec->ExceptionInformation[1];
1252 named_thread_id = (DWORD) (0xffffffff & rec->ExceptionInformation[2]);
1254 if (named_thread_id == (DWORD) -1)
1255 named_thread_id = current_event.dwThreadId;
1257 named_thread = thread_rec (named_thread_id, 0);
1258 if (named_thread != NULL)
1260 int thread_name_len;
1261 gdb::unique_xmalloc_ptr<char> thread_name;
1263 thread_name_len = target_read_string (thread_name_target,
1264 &thread_name, 1025, NULL);
1265 if (thread_name_len > 0)
1267 thread_name.get ()[thread_name_len - 1] = '\0';
1268 xfree (named_thread->name);
1269 named_thread->name = thread_name.release ();
1272 ourstatus->value.sig = GDB_SIGNAL_TRAP;
1273 result = HANDLE_EXCEPTION_IGNORED;
1276 /* treat improperly formed exception as unknown */
1279 /* Treat unhandled first chance exceptions specially. */
1280 if (current_event.u.Exception.dwFirstChance)
1281 return HANDLE_EXCEPTION_UNHANDLED;
1282 printf_unfiltered ("gdb: unknown target exception 0x%08x at %s\n",
1283 (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode,
1284 host_address_to_string (
1285 current_event.u.Exception.ExceptionRecord.ExceptionAddress));
1286 ourstatus->value.sig = GDB_SIGNAL_UNKNOWN;
1290 last_sig = ourstatus->value.sig;
1294 /* Resume thread specified by ID, or all artificially suspended
1295 threads, if we are continuing execution. KILLED non-zero means we
1296 have killed the inferior, so we should ignore weird errors due to
1297 threads shutting down. */
1299 windows_continue (DWORD continue_status, int id, int killed)
1302 windows_thread_info *th;
1305 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=0x%x, %s);\n",
1306 (unsigned) current_event.dwProcessId,
1307 (unsigned) current_event.dwThreadId,
1308 continue_status == DBG_CONTINUE ?
1309 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1311 for (th = &thread_head; (th = th->next) != NULL;)
1312 if ((id == -1 || id == (int) th->id)
1315 if (debug_registers_changed)
1317 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1318 th->context.Dr0 = dr[0];
1319 th->context.Dr1 = dr[1];
1320 th->context.Dr2 = dr[2];
1321 th->context.Dr3 = dr[3];
1322 th->context.Dr6 = DR6_CLEAR_VALUE;
1323 th->context.Dr7 = dr[7];
1325 if (th->context.ContextFlags)
1329 if (GetExitCodeThread (th->h, &ec)
1330 && ec == STILL_ACTIVE)
1332 BOOL status = SetThreadContext (th->h, &th->context);
1337 th->context.ContextFlags = 0;
1339 if (th->suspended > 0)
1340 (void) ResumeThread (th->h);
1344 res = ContinueDebugEvent (current_event.dwProcessId,
1345 current_event.dwThreadId,
1349 error (_("Failed to resume program execution"
1350 " (ContinueDebugEvent failed, error %u)"),
1351 (unsigned int) GetLastError ());
1353 debug_registers_changed = 0;
1357 /* Called in pathological case where Windows fails to send a
1358 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1360 fake_create_process (void)
1362 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1363 current_event.dwProcessId);
1364 if (current_process_handle != NULL)
1365 open_process_used = 1;
1368 error (_("OpenProcess call failed, GetLastError = %u"),
1369 (unsigned) GetLastError ());
1370 /* We can not debug anything in that case. */
1372 main_thread_id = current_event.dwThreadId;
1373 current_thread = windows_add_thread (
1374 ptid_t (current_event.dwProcessId, 0,
1375 current_event.dwThreadId),
1376 current_event.u.CreateThread.hThread,
1377 current_event.u.CreateThread.lpThreadLocalBase);
1378 return main_thread_id;
1382 windows_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig)
1384 windows_thread_info *th;
1385 DWORD continue_status = DBG_CONTINUE;
1387 /* A specific PTID means `step only this thread id'. */
1388 int resume_all = ptid == minus_one_ptid;
1390 /* If we're continuing all threads, it's the current inferior that
1391 should be handled specially. */
1393 ptid = inferior_ptid;
1395 if (sig != GDB_SIGNAL_0)
1397 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1399 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1401 else if (sig == last_sig)
1402 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1405 /* This code does not seem to work, because
1406 the kernel does probably not consider changes in the ExceptionRecord
1407 structure when passing the exception to the inferior.
1408 Note that this seems possible in the exception handler itself. */
1411 for (i = 0; xlate[i].them != -1; i++)
1412 if (xlate[i].us == sig)
1414 current_event.u.Exception.ExceptionRecord.ExceptionCode
1416 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1419 if (continue_status == DBG_CONTINUE)
1421 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1425 DEBUG_EXCEPT(("Can only continue with received signal %d.\n",
1429 last_sig = GDB_SIGNAL_0;
1431 DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
1432 ptid.pid (), ptid.tid (), step, sig));
1434 /* Get context for currently selected thread. */
1435 th = thread_rec (inferior_ptid.tid (), FALSE);
1440 /* Single step by setting t bit. */
1441 struct regcache *regcache = get_current_regcache ();
1442 struct gdbarch *gdbarch = regcache->arch ();
1443 fetch_registers (regcache, gdbarch_ps_regnum (gdbarch));
1444 th->context.EFlags |= FLAG_TRACE_BIT;
1447 if (th->context.ContextFlags)
1449 if (debug_registers_changed)
1451 th->context.Dr0 = dr[0];
1452 th->context.Dr1 = dr[1];
1453 th->context.Dr2 = dr[2];
1454 th->context.Dr3 = dr[3];
1455 th->context.Dr6 = DR6_CLEAR_VALUE;
1456 th->context.Dr7 = dr[7];
1458 CHECK (SetThreadContext (th->h, &th->context));
1459 th->context.ContextFlags = 0;
1463 /* Allow continuing with the same signal that interrupted us.
1464 Otherwise complain. */
1467 windows_continue (continue_status, -1, 0);
1469 windows_continue (continue_status, ptid.tid (), 0);
1472 /* Ctrl-C handler used when the inferior is not run in the same console. The
1473 handler is in charge of interrupting the inferior using DebugBreakProcess.
1474 Note that this function is not available prior to Windows XP. In this case
1475 we emit a warning. */
1477 ctrl_c_handler (DWORD event_type)
1479 const int attach_flag = current_inferior ()->attach_flag;
1481 /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
1482 if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
1485 /* If the inferior and the debugger share the same console, do nothing as
1486 the inferior has also received the Ctrl-C event. */
1487 if (!new_console && !attach_flag)
1490 if (!DebugBreakProcess (current_process_handle))
1491 warning (_("Could not interrupt program. "
1492 "Press Ctrl-c in the program console."));
1494 /* Return true to tell that Ctrl-C has been handled. */
1498 /* Get the next event from the child. Returns a non-zero thread id if the event
1499 requires handling by WFI (or whatever). */
1501 get_windows_debug_event (struct target_ops *ops,
1502 int pid, struct target_waitstatus *ourstatus)
1505 DWORD continue_status, event_code;
1506 windows_thread_info *th;
1507 static windows_thread_info dummy_thread_info;
1508 DWORD thread_id = 0;
1510 last_sig = GDB_SIGNAL_0;
1512 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1516 continue_status = DBG_CONTINUE;
1518 event_code = current_event.dwDebugEventCode;
1519 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1521 have_saved_context = 0;
1525 case CREATE_THREAD_DEBUG_EVENT:
1526 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1527 (unsigned) current_event.dwProcessId,
1528 (unsigned) current_event.dwThreadId,
1529 "CREATE_THREAD_DEBUG_EVENT"));
1530 if (saw_create != 1)
1532 struct inferior *inf;
1533 inf = find_inferior_pid (current_event.dwProcessId);
1534 if (!saw_create && inf->attach_flag)
1536 /* Kludge around a Windows bug where first event is a create
1537 thread event. Caused when attached process does not have
1539 thread_id = fake_create_process ();
1545 /* Record the existence of this thread. */
1546 thread_id = current_event.dwThreadId;
1547 th = windows_add_thread (ptid_t (current_event.dwProcessId, 0,
1548 current_event.dwThreadId),
1549 current_event.u.CreateThread.hThread,
1550 current_event.u.CreateThread.lpThreadLocalBase);
1554 case EXIT_THREAD_DEBUG_EVENT:
1555 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1556 (unsigned) current_event.dwProcessId,
1557 (unsigned) current_event.dwThreadId,
1558 "EXIT_THREAD_DEBUG_EVENT"));
1560 if (current_event.dwThreadId != main_thread_id)
1562 windows_delete_thread (ptid_t (current_event.dwProcessId, 0,
1563 current_event.dwThreadId),
1564 current_event.u.ExitThread.dwExitCode);
1565 th = &dummy_thread_info;
1569 case CREATE_PROCESS_DEBUG_EVENT:
1570 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1571 (unsigned) current_event.dwProcessId,
1572 (unsigned) current_event.dwThreadId,
1573 "CREATE_PROCESS_DEBUG_EVENT"));
1574 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1575 if (++saw_create != 1)
1578 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1580 windows_delete_thread (ptid_t (current_event.dwProcessId, 0,
1583 main_thread_id = current_event.dwThreadId;
1584 /* Add the main thread. */
1585 th = windows_add_thread (ptid_t (current_event.dwProcessId, 0,
1586 current_event.dwThreadId),
1587 current_event.u.CreateProcessInfo.hThread,
1588 current_event.u.CreateProcessInfo.lpThreadLocalBase);
1589 thread_id = current_event.dwThreadId;
1592 case EXIT_PROCESS_DEBUG_EVENT:
1593 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1594 (unsigned) current_event.dwProcessId,
1595 (unsigned) current_event.dwThreadId,
1596 "EXIT_PROCESS_DEBUG_EVENT"));
1597 if (!windows_initialization_done)
1599 target_terminal::ours ();
1600 target_mourn_inferior (inferior_ptid);
1601 error (_("During startup program exited with code 0x%x."),
1602 (unsigned int) current_event.u.ExitProcess.dwExitCode);
1604 else if (saw_create == 1)
1606 ourstatus->kind = TARGET_WAITKIND_EXITED;
1607 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1608 thread_id = main_thread_id;
1612 case LOAD_DLL_DEBUG_EVENT:
1613 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1614 (unsigned) current_event.dwProcessId,
1615 (unsigned) current_event.dwThreadId,
1616 "LOAD_DLL_DEBUG_EVENT"));
1617 CloseHandle (current_event.u.LoadDll.hFile);
1618 if (saw_create != 1 || ! windows_initialization_done)
1620 catch_errors (handle_load_dll);
1621 ourstatus->kind = TARGET_WAITKIND_LOADED;
1622 ourstatus->value.integer = 0;
1623 thread_id = main_thread_id;
1626 case UNLOAD_DLL_DEBUG_EVENT:
1627 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1628 (unsigned) current_event.dwProcessId,
1629 (unsigned) current_event.dwThreadId,
1630 "UNLOAD_DLL_DEBUG_EVENT"));
1631 if (saw_create != 1 || ! windows_initialization_done)
1633 catch_errors (handle_unload_dll);
1634 ourstatus->kind = TARGET_WAITKIND_LOADED;
1635 ourstatus->value.integer = 0;
1636 thread_id = main_thread_id;
1639 case EXCEPTION_DEBUG_EVENT:
1640 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1641 (unsigned) current_event.dwProcessId,
1642 (unsigned) current_event.dwThreadId,
1643 "EXCEPTION_DEBUG_EVENT"));
1644 if (saw_create != 1)
1646 switch (handle_exception (ourstatus))
1648 case HANDLE_EXCEPTION_UNHANDLED:
1650 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1652 case HANDLE_EXCEPTION_HANDLED:
1653 thread_id = current_event.dwThreadId;
1655 case HANDLE_EXCEPTION_IGNORED:
1656 continue_status = DBG_CONTINUE;
1661 case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */
1662 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1663 (unsigned) current_event.dwProcessId,
1664 (unsigned) current_event.dwThreadId,
1665 "OUTPUT_DEBUG_STRING_EVENT"));
1666 if (saw_create != 1)
1668 thread_id = handle_output_debug_string (ourstatus);
1672 if (saw_create != 1)
1674 printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n",
1675 (unsigned) current_event.dwProcessId,
1676 (unsigned) current_event.dwThreadId);
1677 printf_unfiltered (" unknown event code %u\n",
1678 (unsigned) current_event.dwDebugEventCode);
1682 if (!thread_id || saw_create != 1)
1684 CHECK (windows_continue (continue_status, -1, 0));
1688 inferior_ptid = ptid_t (current_event.dwProcessId, 0, thread_id);
1689 current_thread = th;
1690 if (!current_thread)
1691 current_thread = thread_rec (thread_id, TRUE);
1698 /* Wait for interesting events to occur in the target process. */
1700 windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
1705 target_terminal::ours ();
1707 /* We loop when we get a non-standard exception rather than return
1708 with a SPURIOUS because resume can try and step or modify things,
1709 which needs a current_thread->h. But some of these exceptions mark
1710 the birth or death of threads, which mean that the current thread
1711 isn't necessarily what you think it is. */
1717 /* If the user presses Ctrl-c while the debugger is waiting
1718 for an event, he expects the debugger to interrupt his program
1719 and to get the prompt back. There are two possible situations:
1721 - The debugger and the program do not share the console, in
1722 which case the Ctrl-c event only reached the debugger.
1723 In that case, the ctrl_c handler will take care of interrupting
1724 the inferior. Note that this case is working starting with
1725 Windows XP. For Windows 2000, Ctrl-C should be pressed in the
1728 - The debugger and the program share the same console, in which
1729 case both debugger and inferior will receive the Ctrl-c event.
1730 In that case the ctrl_c handler will ignore the event, as the
1731 Ctrl-c event generated inside the inferior will trigger the
1732 expected debug event.
1734 FIXME: brobecker/2008-05-20: If the inferior receives the
1735 signal first and the delay until GDB receives that signal
1736 is sufficiently long, GDB can sometimes receive the SIGINT
1737 after we have unblocked the CTRL+C handler. This would
1738 lead to the debugger stopping prematurely while handling
1739 the new-thread event that comes with the handling of the SIGINT
1740 inside the inferior, and then stop again immediately when
1741 the user tries to resume the execution in the inferior.
1742 This is a classic race that we should try to fix one day. */
1743 SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
1744 retval = get_windows_debug_event (this, pid, ourstatus);
1745 SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
1748 return ptid_t (current_event.dwProcessId, 0, retval);
1753 if (deprecated_ui_loop_hook != NULL)
1754 detach = deprecated_ui_loop_hook (0);
1762 /* Iterate over all DLLs currently mapped by our inferior, and
1763 add them to our list of solibs. */
1766 windows_add_all_dlls (void)
1769 HMODULE dummy_hmodule;
1774 if (EnumProcessModules (current_process_handle, &dummy_hmodule,
1775 sizeof (HMODULE), &cb_needed) == 0)
1781 hmodules = (HMODULE *) alloca (cb_needed);
1782 if (EnumProcessModules (current_process_handle, hmodules,
1783 cb_needed, &cb_needed) == 0)
1786 for (i = 1; i < (int) (cb_needed / sizeof (HMODULE)); i++)
1790 wchar_t dll_name[__PMAX];
1793 char dll_name[__PMAX];
1796 if (GetModuleInformation (current_process_handle, hmodules[i],
1797 &mi, sizeof (mi)) == 0)
1799 if (GetModuleFileNameEx (current_process_handle, hmodules[i],
1800 dll_name, sizeof (dll_name)) == 0)
1803 wcstombs (name, dll_name, __PMAX);
1808 solib_end->next = windows_make_so (name, mi.lpBaseOfDll);
1809 solib_end = solib_end->next;
1814 do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
1817 struct inferior *inf;
1818 struct thread_info *tp;
1820 last_sig = GDB_SIGNAL_0;
1822 exception_count = 0;
1823 open_process_used = 0;
1824 debug_registers_changed = 0;
1825 debug_registers_used = 0;
1826 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1829 cygwin_load_start = cygwin_load_end = 0;
1831 current_event.dwProcessId = pid;
1832 memset (¤t_event, 0, sizeof (current_event));
1833 if (!target_is_pushed (ops))
1835 disable_breakpoints_in_shlibs ();
1836 windows_clear_solib ();
1837 clear_proceed_status (0);
1838 init_wait_for_inferior ();
1840 inf = current_inferior ();
1841 inferior_appeared (inf, pid);
1842 inf->attach_flag = attaching;
1844 /* Make the new process the current inferior, so terminal handling
1845 can rely on it. When attaching, we don't know about any thread
1846 id here, but that's OK --- nothing should be referencing the
1847 current thread until we report an event out of windows_wait. */
1848 inferior_ptid = ptid_t (pid);
1850 target_terminal::init ();
1851 target_terminal::inferior ();
1853 windows_initialization_done = 0;
1857 struct target_waitstatus status;
1859 ops->wait (minus_one_ptid, &status, 0);
1861 /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread
1863 if (status.kind != TARGET_WAITKIND_LOADED
1864 && status.kind != TARGET_WAITKIND_SPURIOUS)
1867 ops->resume (minus_one_ptid, 0, GDB_SIGNAL_0);
1870 /* Now that the inferior has been started and all DLLs have been mapped,
1871 we can iterate over all DLLs and load them in.
1873 We avoid doing it any earlier because, on certain versions of Windows,
1874 LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
1875 we have seen on Windows 8.1 that the ntdll.dll load event does not
1876 include the DLL name, preventing us from creating an associated SO.
1877 A possible explanation is that ntdll.dll might be mapped before
1878 the SO info gets created by the Windows system -- ntdll.dll is
1879 the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
1880 do not seem to suffer from that problem.
1882 Rather than try to work around this sort of issue, it is much
1883 simpler to just ignore DLL load/unload events during the startup
1884 phase, and then process them all in one batch now. */
1885 windows_add_all_dlls ();
1887 windows_initialization_done = 1;
1891 /* Try to set or remove a user privilege to the current process. Return -1
1892 if that fails, the previous setting of that privilege otherwise.
1894 This code is copied from the Cygwin source code and rearranged to allow
1895 dynamically loading of the needed symbols from advapi32 which is only
1896 available on NT/2K/XP. */
1898 set_process_privilege (const char *privilege, BOOL enable)
1900 HANDLE token_hdl = NULL;
1902 TOKEN_PRIVILEGES new_priv, orig_priv;
1906 if (!OpenProcessToken (GetCurrentProcess (),
1907 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1911 if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
1914 new_priv.PrivilegeCount = 1;
1915 new_priv.Privileges[0].Luid = restore_priv;
1916 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1918 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1919 sizeof orig_priv, &orig_priv, &size))
1922 /* Disabled, otherwise every `attach' in an unprivileged user session
1923 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1924 windows_attach(). */
1925 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1926 be enabled. GetLastError () returns an correct error code, though. */
1927 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1931 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1935 CloseHandle (token_hdl);
1940 /* Attach to process PID, then initialize for debugging it. */
1943 windows_nat_target::attach (const char *args, int from_tty)
1948 pid = parse_pid_to_attach (args);
1950 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1952 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1953 printf_unfiltered ("This can cause attach to "
1954 "fail on Windows NT/2K/XP\n");
1957 windows_init_thread_list ();
1958 ok = DebugActiveProcess (pid);
1964 /* Try fall back to Cygwin pid. */
1965 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1968 ok = DebugActiveProcess (pid);
1973 error (_("Can't attach to process."));
1975 DebugSetProcessKillOnExit (FALSE);
1979 char *exec_file = (char *) get_exec_file (0);
1982 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1983 target_pid_to_str (ptid_t (pid)));
1985 printf_unfiltered ("Attaching to %s\n",
1986 target_pid_to_str (ptid_t (pid)));
1988 gdb_flush (gdb_stdout);
1991 do_initial_windows_stuff (this, pid, 1);
1992 target_terminal::ours ();
1996 windows_nat_target::detach (inferior *inf, int from_tty)
2000 ptid_t ptid = minus_one_ptid;
2001 resume (ptid, 0, GDB_SIGNAL_0);
2003 if (!DebugActiveProcessStop (current_event.dwProcessId))
2005 error (_("Can't detach process %u (error %u)"),
2006 (unsigned) current_event.dwProcessId, (unsigned) GetLastError ());
2009 DebugSetProcessKillOnExit (FALSE);
2011 if (detached && from_tty)
2013 const char *exec_file = get_exec_file (0);
2016 printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file,
2017 (unsigned) current_event.dwProcessId);
2018 gdb_flush (gdb_stdout);
2021 x86_cleanup_dregs ();
2022 inferior_ptid = null_ptid;
2023 detach_inferior (inf);
2025 maybe_unpush_target ();
2028 /* Try to determine the executable filename.
2030 EXE_NAME_RET is a pointer to a buffer whose size is EXE_NAME_MAX_LEN.
2032 Upon success, the filename is stored inside EXE_NAME_RET, and
2033 this function returns nonzero.
2035 Otherwise, this function returns zero and the contents of
2036 EXE_NAME_RET is undefined. */
2039 windows_get_exec_module_filename (char *exe_name_ret, size_t exe_name_max_len)
2046 if (!EnumProcessModules (current_process_handle, &dh_buf,
2047 sizeof (HMODULE), &cbNeeded) || !cbNeeded)
2050 /* We know the executable is always first in the list of modules,
2051 which we just fetched. So no need to fetch more. */
2055 /* Cygwin prefers that the path be in /x/y/z format, so extract
2056 the filename into a temporary buffer first, and then convert it
2057 to POSIX format into the destination buffer. */
2058 cygwin_buf_t *pathbuf = (cygwin_buf_t *) alloca (exe_name_max_len * sizeof (cygwin_buf_t));
2060 len = GetModuleFileNameEx (current_process_handle,
2061 dh_buf, pathbuf, exe_name_max_len);
2063 error (_("Error getting executable filename: %u."),
2064 (unsigned) GetLastError ());
2065 if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, exe_name_ret,
2066 exe_name_max_len) < 0)
2067 error (_("Error converting executable filename to POSIX: %d."), errno);
2070 len = GetModuleFileNameEx (current_process_handle,
2071 dh_buf, exe_name_ret, exe_name_max_len);
2073 error (_("Error getting executable filename: %u."),
2074 (unsigned) GetLastError ());
2077 return 1; /* success */
2080 /* The pid_to_exec_file target_ops method for this platform. */
2083 windows_nat_target::pid_to_exec_file (int pid)
2085 static char path[__PMAX];
2087 /* Try to find exe name as symlink target of /proc/<pid>/exe. */
2089 char procexe[sizeof ("/proc/4294967295/exe")];
2091 xsnprintf (procexe, sizeof (procexe), "/proc/%u/exe", pid);
2092 nchars = readlink (procexe, path, sizeof(path));
2093 if (nchars > 0 && nchars < sizeof (path))
2095 path[nchars] = '\0'; /* Got it */
2100 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
2101 of gdb, or we're trying to debug a non-Cygwin windows executable. */
2102 if (!windows_get_exec_module_filename (path, sizeof (path)))
2108 /* Print status information about what we're accessing. */
2111 windows_nat_target::files_info ()
2113 struct inferior *inf = current_inferior ();
2115 printf_unfiltered ("\tUsing the running image of %s %s.\n",
2116 inf->attach_flag ? "attached" : "child",
2117 target_pid_to_str (inferior_ptid));
2120 /* Modify CreateProcess parameters for use of a new separate console.
2122 *FLAGS: DWORD parameter for general process creation flags.
2123 *SI: STARTUPINFO structure, for which the console window size and
2124 console buffer size is filled in if GDB is running in a console.
2125 to create the new console.
2126 The size of the used font is not available on all versions of
2127 Windows OS. Furthermore, the current font might not be the default
2128 font, but this is still better than before.
2129 If the windows and buffer sizes are computed,
2130 SI->DWFLAGS is changed so that this information is used
2131 by CreateProcess function. */
2134 windows_set_console_info (STARTUPINFO *si, DWORD *flags)
2136 HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE,
2137 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
2139 if (hconsole != INVALID_HANDLE_VALUE)
2141 CONSOLE_SCREEN_BUFFER_INFO sbinfo;
2143 CONSOLE_FONT_INFO cfi;
2145 GetCurrentConsoleFont (hconsole, FALSE, &cfi);
2146 font_size = GetConsoleFontSize (hconsole, cfi.nFont);
2147 GetConsoleScreenBufferInfo(hconsole, &sbinfo);
2148 si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1;
2149 si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1;
2151 si->dwXSize *= font_size.X;
2155 si->dwYSize *= font_size.Y;
2158 si->dwXCountChars = sbinfo.dwSize.X;
2159 si->dwYCountChars = sbinfo.dwSize.Y;
2160 si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS;
2162 *flags |= CREATE_NEW_CONSOLE;
2166 /* Function called by qsort to sort environment strings. */
2169 envvar_cmp (const void *a, const void *b)
2171 const char **p = (const char **) a;
2172 const char **q = (const char **) b;
2173 return strcasecmp (*p, *q);
2179 clear_win32_environment (char **env)
2183 wchar_t *copy = NULL, *equalpos;
2185 for (i = 0; env[i] && *env[i]; i++)
2187 len = mbstowcs (NULL, env[i], 0) + 1;
2188 copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t));
2189 mbstowcs (copy, env[i], len);
2190 equalpos = wcschr (copy, L'=');
2193 SetEnvironmentVariableW (copy, NULL);
2201 /* Redirection of inferior I/O streams for native MS-Windows programs.
2202 Unlike on Unix, where this is handled by invoking the inferior via
2203 the shell, on MS-Windows we need to emulate the cmd.exe shell.
2205 The official documentation of the cmd.exe redirection features is here:
2207 http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx
2209 (That page talks about Windows XP, but there's no newer
2210 documentation, so we assume later versions of cmd.exe didn't change
2213 Caveat: the documentation on that page seems to include a few lies.
2214 For example, it describes strange constructs 1<&2 and 2<&1, which
2215 seem to work only when 1>&2 resp. 2>&1 would make sense, and so I
2216 think the cmd.exe parser of the redirection symbols simply doesn't
2217 care about the < vs > distinction in these cases. Therefore, the
2218 supported features are explicitly documented below.
2220 The emulation below aims at supporting all the valid use cases
2221 supported by cmd.exe, which include:
2223 < FILE redirect standard input from FILE
2224 0< FILE redirect standard input from FILE
2225 <&N redirect standard input from file descriptor N
2226 0<&N redirect standard input from file descriptor N
2227 > FILE redirect standard output to FILE
2228 >> FILE append standard output to FILE
2229 1>> FILE append standard output to FILE
2230 >&N redirect standard output to file descriptor N
2231 1>&N redirect standard output to file descriptor N
2232 >>&N append standard output to file descriptor N
2233 1>>&N append standard output to file descriptor N
2234 2> FILE redirect standard error to FILE
2235 2>> FILE append standard error to FILE
2236 2>&N redirect standard error to file descriptor N
2237 2>>&N append standard error to file descriptor N
2239 Note that using N > 2 in the above construct is supported, but
2240 requires that the corresponding file descriptor be open by some
2241 means elsewhere or outside GDB. Also note that using ">&0" or
2242 "<&2" will generally fail, because the file descriptor redirected
2243 from is normally open in an incompatible mode (e.g., FD 0 is open
2244 for reading only). IOW, use of such tricks is not recommended;
2245 you are on your own.
2247 We do NOT support redirection of file descriptors above 2, as in
2248 "3>SOME-FILE", because MinGW compiled programs don't (supporting
2249 that needs special handling in the startup code that MinGW
2250 doesn't have). Pipes are also not supported.
2252 As for invalid use cases, where the redirection contains some
2253 error, the emulation below will detect that and produce some
2254 error and/or failure. But the behavior in those cases is not
2255 bug-for-bug compatible with what cmd.exe does in those cases.
2256 That's because what cmd.exe does then is not well defined, and
2257 seems to be a side effect of the cmd.exe parsing of the command
2258 line more than anything else. For example, try redirecting to an
2259 invalid file name, as in "> foo:bar".
2261 There are also minor syntactic deviations from what cmd.exe does
2262 in some corner cases. For example, it doesn't support the likes
2263 of "> &foo" to mean redirect to file named literally "&foo"; we
2264 do support that here, because that, too, sounds like some issue
2265 with the cmd.exe parser. Another nicety is that we support
2266 redirection targets that use file names with forward slashes,
2267 something cmd.exe doesn't -- this comes in handy since GDB
2268 file-name completion can be used when typing the command line for
2271 /* Support routines for redirecting standard handles of the inferior. */
2273 /* Parse a single redirection spec, open/duplicate the specified
2274 file/fd, and assign the appropriate value to one of the 3 standard
2275 file descriptors. */
2277 redir_open (const char *redir_string, int *inp, int *out, int *err)
2279 int *fd, ref_fd = -2;
2281 const char *fname = redir_string + 1;
2282 int rc = *redir_string;
2297 fd = (rc == '2') ? err : out;
2298 mode = O_WRONLY | O_CREAT;
2311 if (*fname == '&' && '0' <= fname[1] && fname[1] <= '9')
2313 /* A reference to a file descriptor. */
2315 ref_fd = (int) strtol (fname + 1, &fdtail, 10);
2316 if (fdtail > fname + 1 && *fdtail == '\0')
2318 /* Don't allow redirection when open modes are incompatible. */
2319 if ((ref_fd == 0 && (fd == out || fd == err))
2320 || ((ref_fd == 1 || ref_fd == 2) && fd == inp))
2327 else if (ref_fd == 1)
2329 else if (ref_fd == 2)
2339 fname++; /* skip the separator space */
2340 /* If the descriptor is already open, close it. This allows
2341 multiple specs of redirections for the same stream, which is
2342 somewhat nonsensical, but still valid and supported by cmd.exe.
2343 (But cmd.exe only opens a single file in this case, the one
2344 specified by the last redirection spec on the command line.) */
2349 *fd = _open (fname, mode, _S_IREAD | _S_IWRITE);
2353 else if (ref_fd == -1)
2354 *fd = -1; /* reset to default destination */
2357 *fd = _dup (ref_fd);
2361 /* _open just sets a flag for O_APPEND, which won't be passed to the
2362 inferior, so we need to actually move the file pointer. */
2363 if ((mode & O_APPEND) != 0)
2364 _lseek (*fd, 0L, SEEK_END);
2368 /* Canonicalize a single redirection spec and set up the corresponding
2369 file descriptor as specified. */
2371 redir_set_redirection (const char *s, int *inp, int *out, int *err)
2373 char buf[__PMAX + 2 + 5]; /* extra space for quotes & redirection string */
2375 const char *start = s;
2378 *d++ = *s++; /* copy the 1st character, < or > or a digit */
2379 if ((*start == '>' || *start == '1' || *start == '2')
2383 if (*s == '>' && *start != '>')
2386 else if (*start == '0' && *s == '<')
2388 /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */
2391 while (isspace (*s)) /* skip whitespace before file name */
2393 *d++ = ' '; /* separate file name with a single space */
2396 /* Copy the file name. */
2399 /* Remove quoting characters from the file name in buf[]. */
2400 if (*s == '"') /* could support '..' quoting here */
2404 else if (*s == quote)
2412 else if (*s == '\\')
2414 if (s[1] == '"') /* could support '..' here */
2418 else if (isspace (*s) && !quote)
2422 if (d - buf >= sizeof (buf) - 1)
2424 errno = ENAMETOOLONG;
2430 /* Windows doesn't allow redirection characters in file names, so we
2431 can bail out early if they use them, or if there's no target file
2432 name after the redirection symbol. */
2433 if (d[-1] == '>' || d[-1] == '<')
2438 if (redir_open (buf, inp, out, err) == 0)
2443 /* Parse the command line for redirection specs and prepare the file
2444 descriptors for the 3 standard streams accordingly. */
2446 redirect_inferior_handles (const char *cmd_orig, char *cmd,
2447 int *inp, int *out, int *err)
2449 const char *s = cmd_orig;
2452 bool retval = false;
2454 while (isspace (*s))
2459 if (*s == '"') /* could also support '..' quoting here */
2463 else if (*s == quote)
2466 else if (*s == '\\')
2468 if (s[1] == '"') /* escaped quote char */
2473 /* Process a single redirection candidate. */
2474 if (*s == '<' || *s == '>'
2475 || ((*s == '1' || *s == '2') && s[1] == '>')
2476 || (*s == '0' && s[1] == '<'))
2478 int skip = redir_set_redirection (s, inp, out, err);
2492 #endif /* !__CYGWIN__ */
2494 /* Start an inferior windows child process and sets inferior_ptid to its pid.
2495 EXEC_FILE is the file to run.
2496 ALLARGS is a string containing the arguments to the program.
2497 ENV is the environment vector to pass. Errors reported with error(). */
2500 windows_nat_target::create_inferior (const char *exec_file,
2501 const std::string &origallargs,
2502 char **in_env, int from_tty)
2506 cygwin_buf_t real_path[__PMAX];
2507 cygwin_buf_t shell[__PMAX]; /* Path to shell */
2508 cygwin_buf_t infcwd[__PMAX];
2510 cygwin_buf_t *toexec;
2511 cygwin_buf_t *cygallargs;
2513 char **old_env = NULL;
2517 int ostdin, ostdout, ostderr;
2518 #else /* !__CYGWIN__ */
2519 char real_path[__PMAX];
2520 char shell[__PMAX]; /* Path to shell */
2522 char *args, *allargs_copy;
2523 size_t args_len, allargs_len;
2524 int fd_inp = -1, fd_out = -1, fd_err = -1;
2525 HANDLE tty = INVALID_HANDLE_VALUE;
2526 HANDLE inf_stdin = INVALID_HANDLE_VALUE;
2527 HANDLE inf_stdout = INVALID_HANDLE_VALUE;
2528 HANDLE inf_stderr = INVALID_HANDLE_VALUE;
2529 bool redirected = false;
2536 #endif /* !__CYGWIN__ */
2537 const char *allargs = origallargs.c_str ();
2538 PROCESS_INFORMATION pi;
2541 const char *inferior_io_terminal = get_inferior_io_terminal ();
2544 error (_("No executable specified, use `target exec'."));
2546 const char *inferior_cwd = get_inferior_cwd ();
2547 std::string expanded_infcwd;
2548 if (inferior_cwd != NULL)
2550 expanded_infcwd = gdb_tilde_expand (inferior_cwd);
2551 /* Mirror slashes on inferior's cwd. */
2552 std::replace (expanded_infcwd.begin (), expanded_infcwd.end (),
2554 inferior_cwd = expanded_infcwd.c_str ();
2557 memset (&si, 0, sizeof (si));
2558 si.cb = sizeof (si);
2561 flags |= CREATE_NEW_PROCESS_GROUP;
2564 windows_set_console_info (&si, &flags);
2569 flags |= DEBUG_ONLY_THIS_PROCESS;
2570 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path,
2571 __PMAX * sizeof (cygwin_buf_t)) < 0)
2572 error (_("Error starting executable: %d"), errno);
2575 len = mbstowcs (NULL, allargs, 0) + 1;
2576 if (len == (size_t) -1)
2577 error (_("Error starting executable: %d"), errno);
2578 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
2579 mbstowcs (cygallargs, allargs, len);
2580 #else /* !__USEWIDE */
2581 cygallargs = allargs;
2586 sh = getenv ("SHELL");
2589 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0)
2590 error (_("Error starting executable via shell: %d"), errno);
2592 len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0)
2593 + mbstowcs (NULL, allargs, 0) + 2;
2594 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
2595 swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs);
2596 #else /* !__USEWIDE */
2597 len = (sizeof (" -c 'exec '") + strlen (exec_file)
2598 + strlen (allargs) + 2);
2599 cygallargs = (char *) alloca (len);
2600 xsnprintf (cygallargs, len, " -c 'exec %s %s'", exec_file, allargs);
2601 #endif /* __USEWIDE */
2603 flags |= DEBUG_PROCESS;
2606 if (inferior_cwd != NULL
2607 && cygwin_conv_path (CCP_POSIX_TO_WIN_W, inferior_cwd,
2608 infcwd, strlen (inferior_cwd)) < 0)
2609 error (_("Error converting inferior cwd: %d"), errno);
2612 args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2)
2613 * sizeof (wchar_t));
2614 wcscpy (args, toexec);
2615 wcscat (args, L" ");
2616 wcscat (args, cygallargs);
2617 #else /* !__USEWIDE */
2618 args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2);
2619 strcpy (args, toexec);
2621 strcat (args, cygallargs);
2622 #endif /* !__USEWIDE */
2624 #ifdef CW_CVT_ENV_TO_WINENV
2625 /* First try to create a direct Win32 copy of the POSIX environment. */
2626 w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env);
2627 if (w32_env != (PWCHAR) -1)
2628 flags |= CREATE_UNICODE_ENVIRONMENT;
2630 /* If that fails, fall back to old method tweaking GDB's environment. */
2631 #endif /* CW_CVT_ENV_TO_WINENV */
2633 /* Reset all Win32 environment variables to avoid leftover on next run. */
2634 clear_win32_environment (environ);
2635 /* Prepare the environment vars for CreateProcess. */
2638 cygwin_internal (CW_SYNC_WINENV);
2642 if (!inferior_io_terminal)
2643 tty = ostdin = ostdout = ostderr = -1;
2646 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
2649 print_sys_errmsg (inferior_io_terminal, errno);
2650 ostdin = ostdout = ostderr = -1;
2663 windows_init_thread_list ();
2664 ret = CreateProcess (0,
2665 args, /* command line */
2666 NULL, /* Security */
2668 TRUE, /* inherit handles */
2669 flags, /* start flags */
2670 w32_env, /* environment */
2671 inferior_cwd != NULL ? infcwd : NULL, /* current
2676 /* Just free the Win32 environment, if it could be created. */
2680 /* Reset all environment variables to avoid leftover on next run. */
2681 clear_win32_environment (in_env);
2682 /* Restore normal GDB environment variables. */
2684 cygwin_internal (CW_SYNC_WINENV);
2697 #else /* !__CYGWIN__ */
2698 allargs_len = strlen (allargs);
2699 allargs_copy = strcpy ((char *) alloca (allargs_len + 1), allargs);
2700 if (strpbrk (allargs_copy, "<>") != NULL)
2705 redirect_inferior_handles (allargs, allargs_copy,
2706 &fd_inp, &fd_out, &fd_err);
2708 warning (_("Error in redirection: %s."), strerror (errno));
2711 allargs_len = strlen (allargs_copy);
2713 /* If not all the standard streams are redirected by the command
2714 line, use inferior_io_terminal for those which aren't. */
2715 if (inferior_io_terminal
2716 && !(fd_inp >= 0 && fd_out >= 0 && fd_err >= 0))
2718 SECURITY_ATTRIBUTES sa;
2719 sa.nLength = sizeof(sa);
2720 sa.lpSecurityDescriptor = 0;
2721 sa.bInheritHandle = TRUE;
2722 tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
2723 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
2724 if (tty == INVALID_HANDLE_VALUE)
2725 warning (_("Warning: Failed to open TTY %s, error %#x."),
2726 inferior_io_terminal, (unsigned) GetLastError ());
2728 if (redirected || tty != INVALID_HANDLE_VALUE)
2731 si.hStdInput = (HANDLE) _get_osfhandle (fd_inp);
2732 else if (tty != INVALID_HANDLE_VALUE)
2735 si.hStdInput = GetStdHandle (STD_INPUT_HANDLE);
2737 si.hStdOutput = (HANDLE) _get_osfhandle (fd_out);
2738 else if (tty != INVALID_HANDLE_VALUE)
2739 si.hStdOutput = tty;
2741 si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
2743 si.hStdError = (HANDLE) _get_osfhandle (fd_err);
2744 else if (tty != INVALID_HANDLE_VALUE)
2747 si.hStdError = GetStdHandle (STD_ERROR_HANDLE);
2748 si.dwFlags |= STARTF_USESTDHANDLES;
2752 /* Build the command line, a space-separated list of tokens where
2753 the first token is the name of the module to be executed.
2754 To avoid ambiguities introduced by spaces in the module name,
2756 args_len = strlen (toexec) + 2 /* quotes */ + allargs_len + 2;
2757 args = (char *) alloca (args_len);
2758 xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs_copy);
2760 flags |= DEBUG_ONLY_THIS_PROCESS;
2762 /* CreateProcess takes the environment list as a null terminated set of
2763 strings (i.e. two nulls terminate the list). */
2765 /* Get total size for env strings. */
2766 for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++)
2767 envlen += strlen (in_env[i]) + 1;
2769 envsize = sizeof (in_env[0]) * (i + 1);
2770 env = (char **) alloca (envsize);
2771 memcpy (env, in_env, envsize);
2772 /* Windows programs expect the environment block to be sorted. */
2773 qsort (env, i, sizeof (char *), envvar_cmp);
2775 w32env = (char *) alloca (envlen + 1);
2777 /* Copy env strings into new buffer. */
2778 for (temp = w32env, i = 0; env[i] && *env[i]; i++)
2780 strcpy (temp, env[i]);
2781 temp += strlen (temp) + 1;
2784 /* Final nil string to terminate new env. */
2787 windows_init_thread_list ();
2788 ret = CreateProcessA (0,
2789 args, /* command line */
2790 NULL, /* Security */
2792 TRUE, /* inherit handles */
2793 flags, /* start flags */
2794 w32env, /* environment */
2795 inferior_cwd, /* current directory */
2798 if (tty != INVALID_HANDLE_VALUE)
2806 #endif /* !__CYGWIN__ */
2809 error (_("Error creating process %s, (error %u)."),
2810 exec_file, (unsigned) GetLastError ());
2812 CloseHandle (pi.hThread);
2813 CloseHandle (pi.hProcess);
2815 if (useshell && shell[0] != '\0')
2820 do_initial_windows_stuff (this, pi.dwProcessId, 0);
2822 /* windows_continue (DBG_CONTINUE, -1, 0); */
2826 windows_nat_target::mourn_inferior ()
2828 (void) windows_continue (DBG_CONTINUE, -1, 0);
2829 x86_cleanup_dregs();
2830 if (open_process_used)
2832 CHECK (CloseHandle (current_process_handle));
2833 open_process_used = 0;
2835 inf_child_target::mourn_inferior ();
2838 /* Send a SIGINT to the process group. This acts just like the user typed a
2839 ^C on the controlling terminal. */
2842 windows_nat_target::interrupt ()
2844 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
2845 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
2846 registers_changed (); /* refresh register state */
2849 /* Helper for windows_xfer_partial that handles memory transfers.
2850 Arguments are like target_xfer_partial. */
2852 static enum target_xfer_status
2853 windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
2854 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
2858 DWORD lasterror = 0;
2860 if (writebuf != NULL)
2862 DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n",
2863 pulongest (len), core_addr_to_string (memaddr)));
2864 success = WriteProcessMemory (current_process_handle,
2865 (LPVOID) (uintptr_t) memaddr, writebuf,
2868 lasterror = GetLastError ();
2869 FlushInstructionCache (current_process_handle,
2870 (LPCVOID) (uintptr_t) memaddr, len);
2874 DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n",
2875 pulongest (len), core_addr_to_string (memaddr)));
2876 success = ReadProcessMemory (current_process_handle,
2877 (LPCVOID) (uintptr_t) memaddr, readbuf,
2880 lasterror = GetLastError ();
2882 *xfered_len = (ULONGEST) done;
2883 if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0)
2884 return TARGET_XFER_OK;
2886 return success ? TARGET_XFER_OK : TARGET_XFER_E_IO;
2890 windows_nat_target::kill ()
2892 CHECK (TerminateProcess (current_process_handle, 0));
2896 if (!windows_continue (DBG_CONTINUE, -1, 1))
2898 if (!WaitForDebugEvent (¤t_event, INFINITE))
2900 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
2904 target_mourn_inferior (inferior_ptid); /* Or just windows_mourn_inferior? */
2908 windows_nat_target::close ()
2910 DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
2911 inferior_ptid.pid ()));
2914 /* Convert pid to printable format. */
2916 windows_nat_target::pid_to_str (ptid_t ptid)
2918 static char buf[80];
2920 if (ptid.tid () != 0)
2922 snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
2923 ptid.pid (), ptid.tid ());
2927 return normal_pid_to_str (ptid);
2930 static enum target_xfer_status
2931 windows_xfer_shared_libraries (struct target_ops *ops,
2932 enum target_object object, const char *annex,
2933 gdb_byte *readbuf, const gdb_byte *writebuf,
2934 ULONGEST offset, ULONGEST len,
2935 ULONGEST *xfered_len)
2937 struct obstack obstack;
2943 return TARGET_XFER_E_IO;
2945 obstack_init (&obstack);
2946 obstack_grow_str (&obstack, "<library-list>\n");
2947 for (so = solib_start.next; so; so = so->next)
2949 lm_info_windows *li = (lm_info_windows *) so->lm_info;
2951 windows_xfer_shared_library (so->so_name, (CORE_ADDR)
2952 (uintptr_t) li->load_addr,
2953 target_gdbarch (), &obstack);
2955 obstack_grow_str0 (&obstack, "</library-list>\n");
2957 buf = (const char *) obstack_finish (&obstack);
2958 len_avail = strlen (buf);
2959 if (offset >= len_avail)
2963 if (len > len_avail - offset)
2964 len = len_avail - offset;
2965 memcpy (readbuf, buf + offset, len);
2968 obstack_free (&obstack, NULL);
2969 *xfered_len = (ULONGEST) len;
2970 return len != 0 ? TARGET_XFER_OK : TARGET_XFER_EOF;
2973 enum target_xfer_status
2974 windows_nat_target::xfer_partial (enum target_object object,
2975 const char *annex, gdb_byte *readbuf,
2976 const gdb_byte *writebuf, ULONGEST offset,
2977 ULONGEST len, ULONGEST *xfered_len)
2981 case TARGET_OBJECT_MEMORY:
2982 return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
2984 case TARGET_OBJECT_LIBRARIES:
2985 return windows_xfer_shared_libraries (this, object, annex, readbuf,
2986 writebuf, offset, len, xfered_len);
2989 if (beneath () == NULL)
2991 /* This can happen when requesting the transfer of unsupported
2992 objects before a program has been started (and therefore
2993 with the current_target having no target beneath). */
2994 return TARGET_XFER_E_IO;
2996 return beneath ()->xfer_partial (object, annex,
2997 readbuf, writebuf, offset, len,
3002 /* Provide thread local base, i.e. Thread Information Block address.
3003 Returns 1 if ptid is found and sets *ADDR to thread_local_base. */
3006 windows_nat_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr)
3008 windows_thread_info *th;
3010 th = thread_rec (ptid.tid (), 0);
3015 *addr = th->thread_local_base;
3021 windows_nat_target::get_ada_task_ptid (long lwp, long thread)
3023 return ptid_t (inferior_ptid.pid (), 0, lwp);
3026 /* Implementation of the to_thread_name method. */
3029 windows_nat_target::thread_name (struct thread_info *thr)
3031 return thread_rec (thr->ptid.tid (), 0)->name;
3036 _initialize_windows_nat (void)
3038 x86_dr_low.set_control = cygwin_set_dr7;
3039 x86_dr_low.set_addr = cygwin_set_dr;
3040 x86_dr_low.get_addr = cygwin_get_dr;
3041 x86_dr_low.get_status = cygwin_get_dr6;
3042 x86_dr_low.get_control = cygwin_get_dr7;
3044 /* x86_dr_low.debug_register_length field is set by
3045 calling x86_set_debug_register_length function
3046 in processor windows specific native file. */
3048 add_inf_child_target (&the_windows_nat_target);
3051 cygwin_internal (CW_SET_DOS_FILE_WARNING, 0);
3054 add_com ("signal-event", class_run, signal_event_command, _("\
3055 Signal a crashed process with event ID, to allow its debugging.\n\
3056 This command is needed in support of setting up GDB as JIT debugger on \
3057 MS-Windows. The command should be invoked from the GDB command line using \
3058 the '-ex' command-line option. The ID of the event that blocks the \
3059 crashed process will be supplied by the Windows JIT debugging mechanism."));
3062 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
3063 Set use of shell to start subprocess."), _("\
3064 Show use of shell to start subprocess."), NULL,
3066 NULL, /* FIXME: i18n: */
3067 &setlist, &showlist);
3069 add_setshow_boolean_cmd ("cygwin-exceptions", class_support,
3070 &cygwin_exceptions, _("\
3071 Break when an exception is detected in the Cygwin DLL itself."), _("\
3072 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
3074 NULL, /* FIXME: i18n: */
3075 &setlist, &showlist);
3078 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
3079 Set creation of new console when creating child process."), _("\
3080 Show creation of new console when creating child process."), NULL,
3082 NULL, /* FIXME: i18n: */
3083 &setlist, &showlist);
3085 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
3086 Set creation of new group when creating child process."), _("\
3087 Show creation of new group when creating child process."), NULL,
3089 NULL, /* FIXME: i18n: */
3090 &setlist, &showlist);
3092 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
3093 Set whether to display execution in child process."), _("\
3094 Show whether to display execution in child process."), NULL,
3096 NULL, /* FIXME: i18n: */
3097 &setlist, &showlist);
3099 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
3100 Set whether to display kernel events in child process."), _("\
3101 Show whether to display kernel events in child process."), NULL,
3103 NULL, /* FIXME: i18n: */
3104 &setlist, &showlist);
3106 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
3107 Set whether to display memory accesses in child process."), _("\
3108 Show whether to display memory accesses in child process."), NULL,
3110 NULL, /* FIXME: i18n: */
3111 &setlist, &showlist);
3113 add_setshow_boolean_cmd ("debugexceptions", class_support,
3114 &debug_exceptions, _("\
3115 Set whether to display kernel exceptions in child process."), _("\
3116 Show whether to display kernel exceptions in child process."), NULL,
3118 NULL, /* FIXME: i18n: */
3119 &setlist, &showlist);
3121 init_w32_command_list ();
3123 add_cmd ("selector", class_info, display_selectors,
3124 _("Display selectors infos."),
3128 /* Hardware watchpoint support, adapted from go32-nat.c code. */
3130 /* Pass the address ADDR to the inferior in the I'th debug register.
3131 Here we just store the address in dr array, the registers will be
3132 actually set up when windows_continue is called. */
3134 cygwin_set_dr (int i, CORE_ADDR addr)
3137 internal_error (__FILE__, __LINE__,
3138 _("Invalid register %d in cygwin_set_dr.\n"), i);
3140 debug_registers_changed = 1;
3141 debug_registers_used = 1;
3144 /* Pass the value VAL to the inferior in the DR7 debug control
3145 register. Here we just store the address in D_REGS, the watchpoint
3146 will be actually set up in windows_wait. */
3148 cygwin_set_dr7 (unsigned long val)
3150 dr[7] = (CORE_ADDR) val;
3151 debug_registers_changed = 1;
3152 debug_registers_used = 1;
3155 /* Get the value of debug register I from the inferior. */
3158 cygwin_get_dr (int i)
3163 /* Get the value of the DR6 debug status register from the inferior.
3164 Here we just return the value stored in dr[6]
3165 by the last call to thread_rec for current_event.dwThreadId id. */
3166 static unsigned long
3167 cygwin_get_dr6 (void)
3169 return (unsigned long) dr[6];
3172 /* Get the value of the DR7 debug status register from the inferior.
3173 Here we just return the value stored in dr[7] by the last call to
3174 thread_rec for current_event.dwThreadId id. */
3176 static unsigned long
3177 cygwin_get_dr7 (void)
3179 return (unsigned long) dr[7];
3182 /* Determine if the thread referenced by "ptid" is alive
3183 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
3184 it means that the thread has died. Otherwise it is assumed to be alive. */
3187 windows_nat_target::thread_alive (ptid_t ptid)
3191 gdb_assert (ptid.tid () != 0);
3194 return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) != WAIT_OBJECT_0;
3198 _initialize_check_for_gdb_ini (void)
3201 if (inhibit_gdbinit)
3204 homedir = getenv ("HOME");
3208 char *oldini = (char *) alloca (strlen (homedir) +
3209 sizeof ("gdb.ini") + 1);
3210 strcpy (oldini, homedir);
3211 p = strchr (oldini, '\0');
3212 if (p > oldini && !IS_DIR_SEPARATOR (p[-1]))
3214 strcpy (p, "gdb.ini");
3215 if (access (oldini, 0) == 0)
3217 int len = strlen (oldini);
3218 char *newini = (char *) alloca (len + 2);
3220 xsnprintf (newini, len + 2, "%.*s.gdbinit",
3221 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
3222 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
3227 /* Define dummy functions which always return error for the rare cases where
3228 these functions could not be found. */
3230 bad_DebugActiveProcessStop (DWORD w)
3235 bad_DebugBreakProcess (HANDLE w)
3240 bad_DebugSetProcessKillOnExit (BOOL w)
3245 bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
3252 bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z)
3258 bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
3265 bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
3271 bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
3277 bad_GetCurrentConsoleFont (HANDLE w, BOOL bMaxWindow, CONSOLE_FONT_INFO *f)
3283 bad_GetConsoleFontSize (HANDLE w, DWORD nFont)
3291 /* Load any functions which may not be available in ancient versions
3295 _initialize_loadable (void)
3299 #define GPA(m, func) \
3300 func = (func ## _ftype *) GetProcAddress (m, #func)
3302 hm = LoadLibrary ("kernel32.dll");
3305 GPA (hm, DebugActiveProcessStop);
3306 GPA (hm, DebugBreakProcess);
3307 GPA (hm, DebugSetProcessKillOnExit);
3308 GPA (hm, GetConsoleFontSize);
3309 GPA (hm, DebugActiveProcessStop);
3310 GPA (hm, GetCurrentConsoleFont);
3313 /* Set variables to dummy versions of these processes if the function
3314 wasn't found in kernel32.dll. */
3315 if (!DebugBreakProcess)
3316 DebugBreakProcess = bad_DebugBreakProcess;
3317 if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit)
3319 DebugActiveProcessStop = bad_DebugActiveProcessStop;
3320 DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
3322 if (!GetConsoleFontSize)
3323 GetConsoleFontSize = bad_GetConsoleFontSize;
3324 if (!GetCurrentConsoleFont)
3325 GetCurrentConsoleFont = bad_GetCurrentConsoleFont;
3327 /* Load optional functions used for retrieving filename information
3328 associated with the currently debugged process or its dlls. */
3329 hm = LoadLibrary ("psapi.dll");
3332 GPA (hm, EnumProcessModules);
3333 GPA (hm, GetModuleInformation);
3334 GetModuleFileNameEx = (GetModuleFileNameEx_ftype *)
3335 GetProcAddress (hm, GetModuleFileNameEx_name);
3338 if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
3340 /* Set variables to dummy versions of these processes if the function
3341 wasn't found in psapi.dll. */
3342 EnumProcessModules = bad_EnumProcessModules;
3343 GetModuleInformation = bad_GetModuleInformation;
3344 GetModuleFileNameEx = bad_GetModuleFileNameEx;
3345 /* This will probably fail on Windows 9x/Me. Let the user know
3346 that we're missing some functionality. */
3348 cannot automatically find executable file or library to read symbols.\n\
3349 Use \"file\" or \"dll\" command to load executable/libraries directly."));
3352 hm = LoadLibrary ("advapi32.dll");
3355 GPA (hm, OpenProcessToken);
3356 GPA (hm, LookupPrivilegeValueA);
3357 GPA (hm, AdjustTokenPrivileges);
3358 /* Only need to set one of these since if OpenProcessToken fails nothing
3360 if (!OpenProcessToken || !LookupPrivilegeValueA
3361 || !AdjustTokenPrivileges)
3362 OpenProcessToken = bad_OpenProcessToken;