1 /* Target-vector operations for controlling windows child processes, for GDB.
3 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 Contributed by Cygnus Solutions, A Red Hat Company.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 /* Originally by Steve Chamberlain, sac@cygnus.com */
26 #include "frame.h" /* required by inferior.h */
29 #include "exceptions.h"
32 #include "completer.h"
36 #include <sys/types.h>
43 #include <sys/cygwin.h>
50 #include "gdb_obstack.h"
51 #include "gdb_string.h"
52 #include "gdbthread.h"
54 #include <sys/param.h>
59 #include "xml-support.h"
61 #include "i386-tdep.h"
62 #include "i387-tdep.h"
64 #include "windows-tdep.h"
65 #include "windows-nat.h"
68 #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
69 #define DebugActiveProcessStop dyn_DebugActiveProcessStop
70 #define DebugBreakProcess dyn_DebugBreakProcess
71 #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
72 #define EnumProcessModules dyn_EnumProcessModules
73 #define GetModuleFileNameExA dyn_GetModuleFileNameExA
74 #define GetModuleInformation dyn_GetModuleInformation
75 #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
76 #define OpenProcessToken dyn_OpenProcessToken
78 static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
79 DWORD, PTOKEN_PRIVILEGES, PDWORD);
80 static BOOL WINAPI (*DebugActiveProcessStop) (DWORD);
81 static BOOL WINAPI (*DebugBreakProcess) (HANDLE);
82 static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL);
83 static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD,
85 static DWORD WINAPI (*GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR,
87 static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
89 static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID);
90 static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
92 static struct target_ops windows_ops;
95 /* The starting and ending address of the cygwin1.dll text segment. */
96 static CORE_ADDR cygwin_load_start;
97 static CORE_ADDR cygwin_load_end;
100 static int have_saved_context; /* True if we've saved context from a cygwin signal. */
101 static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */
103 /* If we're not using the old Cygwin header file set, define the
104 following which never should have been in the generic Win32 API
105 headers in the first place since they were our own invention... */
106 #ifndef _GNU_H_WINDOWS_H
109 FLAG_TRACE_BIT = 0x100,
110 CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
114 #ifndef CONTEXT_EXTENDED_REGISTERS
115 /* This macro is only defined on ia32. It only makes sense on this target,
116 so define it as zero if not already defined. */
117 #define CONTEXT_EXTENDED_REGISTERS 0
120 #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
121 | CONTEXT_EXTENDED_REGISTERS
123 static uintptr_t dr[8];
124 static int debug_registers_changed;
125 static int debug_registers_used;
126 #define DR6_CLEAR_VALUE 0xffff0ff0
128 /* The string sent by cygwin when it processes a signal.
129 FIXME: This should be in a cygwin include file. */
130 #ifndef _CYGWIN_SIGNAL_STRING
131 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
134 #define CHECK(x) check (x, __FILE__,__LINE__)
135 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
136 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
137 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
138 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
140 static void windows_stop (ptid_t);
141 static int windows_thread_alive (struct target_ops *, ptid_t);
142 static void windows_kill_inferior (struct target_ops *);
144 static void cygwin_set_dr (int i, CORE_ADDR addr);
145 static void cygwin_set_dr7 (unsigned long val);
146 static unsigned long cygwin_get_dr6 (void);
148 static enum target_signal last_sig = TARGET_SIGNAL_0;
149 /* Set if a signal was received from the debugged process */
151 /* Thread information structure used to track information that is
152 not available in gdb's thread structure. */
153 typedef struct thread_info_struct
155 struct thread_info_struct *next;
166 static thread_info thread_head;
168 /* The process and thread handles for the above context. */
170 static DEBUG_EVENT current_event; /* The current debug event from
172 static HANDLE current_process_handle; /* Currently executing process */
173 static thread_info *current_thread; /* Info on currently selected thread */
174 static DWORD main_thread_id; /* Thread ID of the main thread */
176 /* Counts of things. */
177 static int exception_count = 0;
178 static int event_count = 0;
179 static int saw_create;
180 static int open_process_used = 0;
183 static int new_console = 0;
185 static int cygwin_exceptions = 0;
187 static int new_group = 1;
188 static int debug_exec = 0; /* show execution */
189 static int debug_events = 0; /* show events from kernel */
190 static int debug_memory = 0; /* show target memory accesses */
191 static int debug_exceptions = 0; /* show target exceptions */
192 static int useshell = 0; /* use shell for subprocesses */
194 /* This vector maps GDB's idea of a register's number into an offset
195 in the windows exception context vector.
197 It also contains the bit mask needed to load the register in question.
199 The contents of this table can only be computed by the units
200 that provide CPU-specific support for Windows native debugging.
201 These units should set the table by calling
202 windows_set_context_register_offsets.
204 One day we could read a reg, we could inspect the context we
205 already have loaded, if it doesn't have the bit set that we need,
206 we read that set of registers in using GetThreadContext. If the
207 context already contains what we need, we just unpack it. Then to
208 write a register, first we have to ensure that the context contains
209 the other regs of the group, and then we copy the info in and set
212 static const int *mappings;
214 /* This vector maps the target's idea of an exception (extracted
215 from the DEBUG_EVENT structure) to GDB's idea. */
217 struct xlate_exception
220 enum target_signal us;
223 static const struct xlate_exception
226 {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
227 {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
228 {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
229 {DBG_CONTROL_C, TARGET_SIGNAL_INT},
230 {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
231 {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
234 /* Set the MAPPINGS static global to OFFSETS.
235 See the description of MAPPINGS for more details. */
238 windows_set_context_register_offsets (const int *offsets)
244 check (BOOL ok, const char *file, int line)
247 printf_filtered ("error return %s:%d was %lu\n", file, line,
251 /* Find a thread record given a thread id. If GET_CONTEXT is not 0,
252 then also retrieve the context for this thread. If GET_CONTEXT is
253 negative, then don't suspend the thread. */
255 thread_rec (DWORD id, int get_context)
259 for (th = &thread_head; (th = th->next) != NULL;)
262 if (!th->suspended && get_context)
264 if (get_context > 0 && id != current_event.dwThreadId)
266 if (SuspendThread (th->h) == (DWORD) -1)
268 DWORD err = GetLastError ();
269 warning (_("SuspendThread failed. (winerr %d)"),
275 else if (get_context < 0)
277 th->reload_context = 1;
285 /* Add a thread to the thread list. */
287 windows_add_thread (ptid_t ptid, HANDLE h)
292 gdb_assert (ptid_get_tid (ptid) != 0);
294 id = ptid_get_tid (ptid);
296 if ((th = thread_rec (id, FALSE)))
299 th = XZALLOC (thread_info);
302 th->next = thread_head.next;
303 thread_head.next = th;
305 /* Set the debug registers for the new thread if they are used. */
306 if (debug_registers_used)
308 /* Only change the value of the debug registers. */
309 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
310 CHECK (GetThreadContext (th->h, &th->context));
311 th->context.Dr0 = dr[0];
312 th->context.Dr1 = dr[1];
313 th->context.Dr2 = dr[2];
314 th->context.Dr3 = dr[3];
315 th->context.Dr6 = DR6_CLEAR_VALUE;
316 th->context.Dr7 = dr[7];
317 CHECK (SetThreadContext (th->h, &th->context));
318 th->context.ContextFlags = 0;
323 /* Clear out any old thread list and reintialize it to a
326 windows_init_thread_list (void)
328 thread_info *th = &thread_head;
330 DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
332 while (th->next != NULL)
334 thread_info *here = th->next;
335 th->next = here->next;
338 thread_head.next = NULL;
341 /* Delete a thread from the list of threads */
343 windows_delete_thread (ptid_t ptid)
348 gdb_assert (ptid_get_tid (ptid) != 0);
350 id = ptid_get_tid (ptid);
353 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
354 delete_thread (ptid);
356 for (th = &thread_head;
357 th->next != NULL && th->next->id != id;
361 if (th->next != NULL)
363 thread_info *here = th->next;
364 th->next = here->next;
370 do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
372 char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
373 struct gdbarch *gdbarch = get_regcache_arch (regcache);
374 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
378 return; /* Windows sometimes uses a non-existent thread id in its
381 if (current_thread->reload_context)
383 #ifdef __COPY_CONTEXT_SIZE
384 if (have_saved_context)
386 /* Lie about where the program actually is stopped since cygwin has informed us that
387 we should consider the signal to have occurred at another location which is stored
388 in "saved_context. */
389 memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE);
390 have_saved_context = 0;
395 thread_info *th = current_thread;
396 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
397 GetThreadContext (th->h, &th->context);
398 /* Copy dr values from that thread.
399 But only if there were not modified since last stop. PR gdb/2388 */
400 if (!debug_registers_changed)
402 dr[0] = th->context.Dr0;
403 dr[1] = th->context.Dr1;
404 dr[2] = th->context.Dr2;
405 dr[3] = th->context.Dr3;
406 dr[6] = th->context.Dr6;
407 dr[7] = th->context.Dr7;
410 current_thread->reload_context = 0;
413 if (r == I387_FISEG_REGNUM (tdep))
415 l = *((long *) context_offset) & 0xffff;
416 regcache_raw_supply (regcache, r, (char *) &l);
418 else if (r == I387_FOP_REGNUM (tdep))
420 l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
421 regcache_raw_supply (regcache, r, (char *) &l);
424 regcache_raw_supply (regcache, r, context_offset);
427 for (r = 0; r < gdbarch_num_regs (gdbarch); r++)
428 do_windows_fetch_inferior_registers (regcache, r);
433 windows_fetch_inferior_registers (struct target_ops *ops,
434 struct regcache *regcache, int r)
436 current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
437 /* Check if current_thread exists. Windows sometimes uses a non-existent
438 thread id in its events */
440 do_windows_fetch_inferior_registers (regcache, r);
444 do_windows_store_inferior_registers (const struct regcache *regcache, int r)
447 /* Windows sometimes uses a non-existent thread id in its events */;
449 regcache_raw_collect (regcache, r,
450 ((char *) ¤t_thread->context) + mappings[r]);
453 for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
454 do_windows_store_inferior_registers (regcache, r);
458 /* Store a new register value into the current thread context */
460 windows_store_inferior_registers (struct target_ops *ops,
461 struct regcache *regcache, int r)
463 current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
464 /* Check if current_thread exists. Windows sometimes uses a non-existent
465 thread id in its events */
467 do_windows_store_inferior_registers (regcache, r);
470 /* Get the name of a given module at at given base address. If base_address
471 is zero return the first loaded module (which is always the name of the
474 get_module_name (LPVOID base_address, char *dll_name_ret)
480 HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */
483 char pathbuf[PATH_MAX + 1]; /* Temporary storage prior to converting to
486 char *pathbuf = dll_name_ret; /* Just copy directly to passed-in arg */
490 /* Find size of buffer needed to handle list of modules loaded in inferior */
491 if (!EnumProcessModules (current_process_handle, DllHandle,
492 sizeof (HMODULE), &cbNeeded) || !cbNeeded)
495 /* Allocate correct amount of space for module list */
496 DllHandle = (HMODULE *) alloca (cbNeeded);
500 /* Get the list of modules */
501 if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
505 for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
507 /* Get information on this module */
508 if (!GetModuleInformation (current_process_handle, DllHandle[i],
510 error (_("Can't get module info"));
512 if (!base_address || mi.lpBaseOfDll == base_address)
514 /* Try to find the name of the given module */
515 len = GetModuleFileNameExA (current_process_handle,
516 DllHandle[i], pathbuf, MAX_PATH);
518 error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
520 /* Cygwin prefers that the path be in /x/y/z format */
521 cygwin_conv_to_full_posix_path (pathbuf, dll_name_ret);
523 return 1; /* success */
528 dll_name_ret[0] = '\0';
529 return 0; /* failure */
532 /* Encapsulate the information required in a call to
533 symbol_file_add_args */
534 struct safe_symbol_file_add_args
538 struct section_addr_info *addrs;
541 struct ui_file *err, *out;
545 /* Maintain a linked list of "so" information. */
551 static struct so_list solib_start, *solib_end;
553 /* Call symbol_file_add with stderr redirected. We don't care if there
556 safe_symbol_file_add_stub (void *argv)
558 #define p ((struct safe_symbol_file_add_args *) argv)
559 const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0)
560 | (p->mainline ? SYMFILE_MAINLINE : 0));
561 p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags);
566 /* Restore gdb's stderr after calling symbol_file_add */
568 safe_symbol_file_add_cleanup (void *p)
570 #define sp ((struct safe_symbol_file_add_args *)p)
571 gdb_flush (gdb_stderr);
572 gdb_flush (gdb_stdout);
573 ui_file_delete (gdb_stderr);
574 ui_file_delete (gdb_stdout);
575 gdb_stderr = sp->err;
576 gdb_stdout = sp->out;
580 /* symbol_file_add wrapper that prevents errors from being displayed. */
581 static struct objfile *
582 safe_symbol_file_add (char *name, int from_tty,
583 struct section_addr_info *addrs,
584 int mainline, int flags)
586 struct safe_symbol_file_add_args p;
587 struct cleanup *cleanup;
589 cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
593 gdb_flush (gdb_stderr);
594 gdb_flush (gdb_stdout);
595 gdb_stderr = ui_file_new ();
596 gdb_stdout = ui_file_new ();
598 p.from_tty = from_tty;
600 p.mainline = mainline;
602 catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
604 do_cleanups (cleanup);
608 static struct so_list *
609 windows_make_so (const char *name, LPVOID load_addr)
612 char buf[MAX_PATH + 1];
613 char cwd[MAX_PATH + 1];
615 WIN32_FIND_DATA w32_fd;
616 HANDLE h = FindFirstFile(name, &w32_fd);
617 MEMORY_BASIC_INFORMATION m;
619 if (h == INVALID_HANDLE_VALUE)
625 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
627 p = strrchr (buf, '\\');
630 SetCurrentDirectory (buf);
631 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
632 SetCurrentDirectory (cwd);
636 if (strcasecmp (buf, "ntdll.dll") == 0)
638 GetSystemDirectory (buf, sizeof (buf));
639 strcat (buf, "\\ntdll.dll");
641 so = XZALLOC (struct so_list);
642 so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
643 so->lm_info->load_addr = load_addr;
644 strcpy (so->so_original_name, name);
646 strcpy (so->so_name, buf);
648 cygwin_conv_to_posix_path (buf, so->so_name);
649 /* Record cygwin1.dll .text start/end. */
650 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
651 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
654 asection *text = NULL;
657 abfd = bfd_openr (so->so_name, "pei-i386");
662 if (bfd_check_format (abfd, bfd_object))
663 text = bfd_get_section_by_name (abfd, ".text");
671 /* The symbols in a dll are offset by 0x1000, which is the the
672 offset from 0 of the first byte in an image - because of the
673 file header and the section alignment. */
674 cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) load_addr + 0x1000);
675 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
685 get_image_name (HANDLE h, void *address, int unicode)
687 static char buf[(2 * MAX_PATH) + 1];
688 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
694 /* Attempt to read the name of the dll that was detected.
695 This is documented to work only when actively debugging
696 a program. It will not work for attached processes. */
700 /* See if we could read the address of a string, and that the
701 address isn't null. */
702 if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
703 || done != sizeof (address_ptr) || !address_ptr)
706 /* Find the length of the string */
707 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
708 && (b[0] != 0 || b[size - 1] != 0) && done == size)
712 ReadProcessMemory (h, address_ptr, buf, len, &done);
715 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
716 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
719 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
725 /* Wait for child to do something. Return pid of child, or -1 in case
726 of error; store status through argument pointer OURSTATUS. */
728 handle_load_dll (void *dummy)
730 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
731 char dll_buf[MAX_PATH + 1];
732 char *dll_name = NULL;
734 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
736 if (!get_module_name (event->lpBaseOfDll, dll_buf))
737 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
741 if (*dll_name == '\0')
742 dll_name = get_image_name (current_process_handle,
743 event->lpImageName, event->fUnicode);
747 solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
748 solib_end = solib_end->next;
750 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
751 host_address_to_string (solib_end->lm_info->load_addr)));
757 windows_free_so (struct so_list *so)
765 handle_unload_dll (void *dummy)
767 LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
770 for (so = &solib_start; so->next != NULL; so = so->next)
771 if (so->next->lm_info->load_addr == lpBaseOfDll)
773 struct so_list *sodel = so->next;
774 so->next = sodel->next;
777 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
779 windows_free_so (sodel);
780 solib_add (NULL, 0, NULL, auto_solib_add);
784 error (_("Error: dll starting at %s not found."),
785 host_address_to_string (lpBaseOfDll));
790 /* Clear list of loaded DLLs. */
792 windows_clear_solib (void)
794 solib_start.next = NULL;
795 solib_end = &solib_start;
798 /* Load DLL symbol info. */
800 dll_symbol_command (char *args, int from_tty)
806 error (_("dll-symbols requires a file name"));
809 if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
811 char *newargs = (char *) alloca (n + 4 + 1);
812 strcpy (newargs, args);
813 strcat (newargs, ".dll");
817 safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
820 /* Handle DEBUG_STRING output from child process.
821 Cygwin prepends its messages with a "cygwin:". Interpret this as
822 a Cygwin signal. Otherwise just print the string as a warning. */
824 handle_output_debug_string (struct target_waitstatus *ourstatus)
829 if (!target_read_string
830 ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
834 else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
837 if (strncmp (s, "cYg", 3) != 0)
841 #ifdef __COPY_CONTEXT_SIZE
844 /* Got a cygwin signal marker. A cygwin signal is followed by the signal number
845 itself and then optionally followed by the thread id and address to saved context
846 within the DLL. If these are supplied, then the given thread is assumed to have
847 issued the signal and the context from the thread is assumed to be stored at the
848 given address in the inferior. Tell gdb to treat this like a real signal. */
850 int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
851 int gotasig = target_signal_from_host (sig);
852 ourstatus->value.sig = gotasig;
857 ourstatus->kind = TARGET_WAITKIND_STOPPED;
858 retval = strtoul (p, &p, 0);
860 retval = main_thread_id;
861 else if ((x = (LPCVOID) strtoul (p, &p, 0))
862 && ReadProcessMemory (current_process_handle, x,
863 &saved_context, __COPY_CONTEXT_SIZE, &n)
864 && n == __COPY_CONTEXT_SIZE)
865 have_saved_context = 1;
866 current_event.dwThreadId = retval;
877 display_selector (HANDLE thread, DWORD sel)
880 if (GetThreadSelectorEntry (thread, sel, &info))
883 printf_filtered ("0x%03lx: ", sel);
884 if (!info.HighWord.Bits.Pres)
886 puts_filtered ("Segment not present\n");
889 base = (info.HighWord.Bits.BaseHi << 24) +
890 (info.HighWord.Bits.BaseMid << 16)
892 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
893 if (info.HighWord.Bits.Granularity)
894 limit = (limit << 12) | 0xfff;
895 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
896 if (info.HighWord.Bits.Default_Big)
897 puts_filtered(" 32-bit ");
899 puts_filtered(" 16-bit ");
900 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
903 puts_filtered ("Data (Read-Only, Exp-up");
906 puts_filtered ("Data (Read/Write, Exp-up");
909 puts_filtered ("Unused segment (");
912 puts_filtered ("Data (Read/Write, Exp-down");
915 puts_filtered ("Code (Exec-Only, N.Conf");
918 puts_filtered ("Code (Exec/Read, N.Conf");
921 puts_filtered ("Code (Exec-Only, Conf");
924 puts_filtered ("Code (Exec/Read, Conf");
927 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
929 if ((info.HighWord.Bits.Type & 0x1) == 0)
930 puts_filtered(", N.Acc");
931 puts_filtered (")\n");
932 if ((info.HighWord.Bits.Type & 0x10) == 0)
933 puts_filtered("System selector ");
934 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
935 if (info.HighWord.Bits.Granularity)
936 puts_filtered ("Page granular.\n");
938 puts_filtered ("Byte granular.\n");
943 printf_filtered ("Invalid selector 0x%lx.\n",sel);
949 display_selectors (char * args, int from_tty)
953 puts_filtered ("Impossible to display selectors now.\n");
959 puts_filtered ("Selector $cs\n");
960 display_selector (current_thread->h,
961 current_thread->context.SegCs);
962 puts_filtered ("Selector $ds\n");
963 display_selector (current_thread->h,
964 current_thread->context.SegDs);
965 puts_filtered ("Selector $es\n");
966 display_selector (current_thread->h,
967 current_thread->context.SegEs);
968 puts_filtered ("Selector $ss\n");
969 display_selector (current_thread->h,
970 current_thread->context.SegSs);
971 puts_filtered ("Selector $fs\n");
972 display_selector (current_thread->h,
973 current_thread->context.SegFs);
974 puts_filtered ("Selector $gs\n");
975 display_selector (current_thread->h,
976 current_thread->context.SegGs);
981 sel = parse_and_eval_long (args);
982 printf_filtered ("Selector \"%s\"\n",args);
983 display_selector (current_thread->h, sel);
987 static struct cmd_list_element *info_w32_cmdlist = NULL;
990 info_w32_command (char *args, int from_tty)
992 help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
996 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
997 printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
998 host_address_to_string (\
999 current_event.u.Exception.ExceptionRecord.ExceptionAddress))
1002 handle_exception (struct target_waitstatus *ourstatus)
1005 DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
1007 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1009 /* Record the context of the current thread */
1010 th = thread_rec (current_event.dwThreadId, -1);
1014 case EXCEPTION_ACCESS_VIOLATION:
1015 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1016 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1019 /* See if the access violation happened within the cygwin DLL itself. Cygwin uses
1020 a kind of exception handling to deal with passed-in invalid addresses. gdb
1021 should not treat these as real SEGVs since they will be silently handled by
1022 cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process
1023 and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up
1024 within the text segment of the DLL itself. */
1026 CORE_ADDR addr = (CORE_ADDR) (uintptr_t) current_event.u.Exception.ExceptionRecord.ExceptionAddress;
1027 if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end))
1028 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1029 && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0))
1034 case STATUS_STACK_OVERFLOW:
1035 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1036 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1038 case STATUS_FLOAT_DENORMAL_OPERAND:
1039 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1040 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1042 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1043 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1044 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1046 case STATUS_FLOAT_INEXACT_RESULT:
1047 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1048 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1050 case STATUS_FLOAT_INVALID_OPERATION:
1051 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1052 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1054 case STATUS_FLOAT_OVERFLOW:
1055 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1056 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1058 case STATUS_FLOAT_STACK_CHECK:
1059 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1060 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1062 case STATUS_FLOAT_UNDERFLOW:
1063 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1064 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1066 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1067 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1068 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1070 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1071 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1072 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1074 case STATUS_INTEGER_OVERFLOW:
1075 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1076 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1078 case EXCEPTION_BREAKPOINT:
1079 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1080 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1083 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1084 ourstatus->value.sig = TARGET_SIGNAL_INT;
1086 case DBG_CONTROL_BREAK:
1087 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1088 ourstatus->value.sig = TARGET_SIGNAL_INT;
1090 case EXCEPTION_SINGLE_STEP:
1091 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1092 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1094 case EXCEPTION_ILLEGAL_INSTRUCTION:
1095 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1096 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1098 case EXCEPTION_PRIV_INSTRUCTION:
1099 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1100 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1102 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1103 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1104 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1107 /* Treat unhandled first chance exceptions specially. */
1108 if (current_event.u.Exception.dwFirstChance)
1110 printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n",
1111 current_event.u.Exception.ExceptionRecord.ExceptionCode,
1112 host_address_to_string (
1113 current_event.u.Exception.ExceptionRecord.ExceptionAddress));
1114 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
1118 last_sig = ourstatus->value.sig;
1122 /* Resume all artificially suspended threads if we are continuing
1125 windows_continue (DWORD continue_status, int id)
1131 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
1132 current_event.dwProcessId, current_event.dwThreadId,
1133 continue_status == DBG_CONTINUE ?
1134 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1136 for (th = &thread_head; (th = th->next) != NULL;)
1137 if ((id == -1 || id == (int) th->id)
1140 if (debug_registers_changed)
1142 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1143 th->context.Dr0 = dr[0];
1144 th->context.Dr1 = dr[1];
1145 th->context.Dr2 = dr[2];
1146 th->context.Dr3 = dr[3];
1147 th->context.Dr6 = DR6_CLEAR_VALUE;
1148 th->context.Dr7 = dr[7];
1150 if (th->context.ContextFlags)
1152 CHECK (SetThreadContext (th->h, &th->context));
1153 th->context.ContextFlags = 0;
1155 if (th->suspended > 0)
1156 (void) ResumeThread (th->h);
1160 res = ContinueDebugEvent (current_event.dwProcessId,
1161 current_event.dwThreadId,
1164 debug_registers_changed = 0;
1168 /* Called in pathological case where Windows fails to send a
1169 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1171 fake_create_process (void)
1173 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1174 current_event.dwProcessId);
1175 if (current_process_handle != NULL)
1176 open_process_used = 1;
1179 error (_("OpenProcess call failed, GetLastError = %lud\n"),
1181 /* We can not debug anything in that case. */
1183 main_thread_id = current_event.dwThreadId;
1184 current_thread = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1185 current_event.dwThreadId),
1186 current_event.u.CreateThread.hThread);
1187 return main_thread_id;
1191 windows_resume (struct target_ops *ops,
1192 ptid_t ptid, int step, enum target_signal sig)
1195 DWORD continue_status = DBG_CONTINUE;
1197 /* A specific PTID means `step only this thread id'. */
1198 int resume_all = ptid_equal (ptid, minus_one_ptid);
1200 /* If we're continuing all threads, it's the current inferior that
1201 should be handled specially. */
1203 ptid = inferior_ptid;
1205 if (sig != TARGET_SIGNAL_0)
1207 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1209 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1211 else if (sig == last_sig)
1212 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1215 /* This code does not seem to work, because
1216 the kernel does probably not consider changes in the ExceptionRecord
1217 structure when passing the exception to the inferior.
1218 Note that this seems possible in the exception handler itself. */
1221 for (i = 0; xlate[i].them != -1; i++)
1222 if (xlate[i].us == sig)
1224 current_event.u.Exception.ExceptionRecord.ExceptionCode =
1226 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1229 if (continue_status == DBG_CONTINUE)
1231 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1235 DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
1239 last_sig = TARGET_SIGNAL_0;
1241 DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
1242 ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
1244 /* Get context for currently selected thread */
1245 th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
1250 /* Single step by setting t bit */
1251 struct regcache *regcache = get_current_regcache ();
1252 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1253 windows_fetch_inferior_registers (ops, regcache,
1254 gdbarch_ps_regnum (gdbarch));
1255 th->context.EFlags |= FLAG_TRACE_BIT;
1258 if (th->context.ContextFlags)
1260 if (debug_registers_changed)
1262 th->context.Dr0 = dr[0];
1263 th->context.Dr1 = dr[1];
1264 th->context.Dr2 = dr[2];
1265 th->context.Dr3 = dr[3];
1266 th->context.Dr6 = DR6_CLEAR_VALUE;
1267 th->context.Dr7 = dr[7];
1269 CHECK (SetThreadContext (th->h, &th->context));
1270 th->context.ContextFlags = 0;
1274 /* Allow continuing with the same signal that interrupted us.
1275 Otherwise complain. */
1278 windows_continue (continue_status, -1);
1280 windows_continue (continue_status, ptid_get_tid (ptid));
1283 /* Ctrl-C handler used when the inferior is not run in the same console. The
1284 handler is in charge of interrupting the inferior using DebugBreakProcess.
1285 Note that this function is not available prior to Windows XP. In this case
1286 we emit a warning. */
1288 ctrl_c_handler (DWORD event_type)
1290 const int attach_flag = current_inferior ()->attach_flag;
1292 /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
1293 if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
1296 /* If the inferior and the debugger share the same console, do nothing as
1297 the inferior has also received the Ctrl-C event. */
1298 if (!new_console && !attach_flag)
1301 if (!DebugBreakProcess (current_process_handle))
1303 Could not interrupt program. Press Ctrl-c in the program console."));
1305 /* Return true to tell that Ctrl-C has been handled. */
1309 /* Get the next event from the child. Return 1 if the event requires
1310 handling by WFI (or whatever). */
1312 get_windows_debug_event (struct target_ops *ops,
1313 int pid, struct target_waitstatus *ourstatus)
1316 DWORD continue_status, event_code;
1318 static thread_info dummy_thread_info;
1321 last_sig = TARGET_SIGNAL_0;
1323 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1327 continue_status = DBG_CONTINUE;
1329 event_code = current_event.dwDebugEventCode;
1330 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1332 have_saved_context = 0;
1336 case CREATE_THREAD_DEBUG_EVENT:
1337 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1338 (unsigned) current_event.dwProcessId,
1339 (unsigned) current_event.dwThreadId,
1340 "CREATE_THREAD_DEBUG_EVENT"));
1341 if (saw_create != 1)
1343 struct inferior *inf;
1344 inf = find_inferior_pid (current_event.dwProcessId);
1345 if (!saw_create && inf->attach_flag)
1347 /* Kludge around a Windows bug where first event is a create
1348 thread event. Caused when attached process does not have
1350 retval = fake_create_process ();
1356 /* Record the existence of this thread */
1357 retval = current_event.dwThreadId;
1358 th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1359 current_event.dwThreadId),
1360 current_event.u.CreateThread.hThread);
1363 case EXIT_THREAD_DEBUG_EVENT:
1364 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1365 (unsigned) current_event.dwProcessId,
1366 (unsigned) current_event.dwThreadId,
1367 "EXIT_THREAD_DEBUG_EVENT"));
1368 if (current_event.dwThreadId != main_thread_id)
1370 windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
1371 current_event.dwThreadId));
1372 th = &dummy_thread_info;
1376 case CREATE_PROCESS_DEBUG_EVENT:
1377 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1378 (unsigned) current_event.dwProcessId,
1379 (unsigned) current_event.dwThreadId,
1380 "CREATE_PROCESS_DEBUG_EVENT"));
1381 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1382 if (++saw_create != 1)
1385 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1387 windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
1389 main_thread_id = current_event.dwThreadId;
1390 /* Add the main thread */
1391 th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1392 current_event.dwThreadId),
1393 current_event.u.CreateProcessInfo.hThread);
1394 retval = current_event.dwThreadId;
1397 case EXIT_PROCESS_DEBUG_EVENT:
1398 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1399 (unsigned) current_event.dwProcessId,
1400 (unsigned) current_event.dwThreadId,
1401 "EXIT_PROCESS_DEBUG_EVENT"));
1402 if (saw_create != 1)
1404 ourstatus->kind = TARGET_WAITKIND_EXITED;
1405 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1406 retval = main_thread_id;
1409 case LOAD_DLL_DEBUG_EVENT:
1410 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1411 (unsigned) current_event.dwProcessId,
1412 (unsigned) current_event.dwThreadId,
1413 "LOAD_DLL_DEBUG_EVENT"));
1414 CloseHandle (current_event.u.LoadDll.hFile);
1415 if (saw_create != 1)
1417 catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
1418 ourstatus->kind = TARGET_WAITKIND_LOADED;
1419 ourstatus->value.integer = 0;
1420 retval = main_thread_id;
1423 case UNLOAD_DLL_DEBUG_EVENT:
1424 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1425 (unsigned) current_event.dwProcessId,
1426 (unsigned) current_event.dwThreadId,
1427 "UNLOAD_DLL_DEBUG_EVENT"));
1428 if (saw_create != 1)
1430 catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
1431 ourstatus->kind = TARGET_WAITKIND_LOADED;
1432 ourstatus->value.integer = 0;
1433 retval = main_thread_id;
1436 case EXCEPTION_DEBUG_EVENT:
1437 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1438 (unsigned) current_event.dwProcessId,
1439 (unsigned) current_event.dwThreadId,
1440 "EXCEPTION_DEBUG_EVENT"));
1441 if (saw_create != 1)
1443 switch (handle_exception (ourstatus))
1446 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1449 retval = current_event.dwThreadId;
1453 continue_status = -1;
1458 case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
1459 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1460 (unsigned) current_event.dwProcessId,
1461 (unsigned) current_event.dwThreadId,
1462 "OUTPUT_DEBUG_STRING_EVENT"));
1463 if (saw_create != 1)
1465 retval = handle_output_debug_string (ourstatus);
1469 if (saw_create != 1)
1471 printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
1472 (DWORD) current_event.dwProcessId,
1473 (DWORD) current_event.dwThreadId);
1474 printf_unfiltered (" unknown event code %ld\n",
1475 current_event.dwDebugEventCode);
1479 if (!retval || saw_create != 1)
1481 if (continue_status == -1)
1482 windows_resume (ops, minus_one_ptid, 0, 1);
1484 CHECK (windows_continue (continue_status, -1));
1488 inferior_ptid = ptid_build (current_event.dwProcessId, 0,
1490 current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
1497 /* Wait for interesting events to occur in the target process. */
1499 windows_wait (struct target_ops *ops,
1500 ptid_t ptid, struct target_waitstatus *ourstatus, int options)
1504 target_terminal_ours ();
1506 /* We loop when we get a non-standard exception rather than return
1507 with a SPURIOUS because resume can try and step or modify things,
1508 which needs a current_thread->h. But some of these exceptions mark
1509 the birth or death of threads, which mean that the current thread
1510 isn't necessarily what you think it is. */
1516 /* If the user presses Ctrl-c while the debugger is waiting
1517 for an event, he expects the debugger to interrupt his program
1518 and to get the prompt back. There are two possible situations:
1520 - The debugger and the program do not share the console, in
1521 which case the Ctrl-c event only reached the debugger.
1522 In that case, the ctrl_c handler will take care of interrupting
1523 the inferior. Note that this case is working starting with
1524 Windows XP. For Windows 2000, Ctrl-C should be pressed in the
1527 - The debugger and the program share the same console, in which
1528 case both debugger and inferior will receive the Ctrl-c event.
1529 In that case the ctrl_c handler will ignore the event, as the
1530 Ctrl-c event generated inside the inferior will trigger the
1531 expected debug event.
1533 FIXME: brobecker/2008-05-20: If the inferior receives the
1534 signal first and the delay until GDB receives that signal
1535 is sufficiently long, GDB can sometimes receive the SIGINT
1536 after we have unblocked the CTRL+C handler. This would
1537 lead to the debugger stopping prematurely while handling
1538 the new-thread event that comes with the handling of the SIGINT
1539 inside the inferior, and then stop again immediately when
1540 the user tries to resume the execution in the inferior.
1541 This is a classic race that we should try to fix one day. */
1542 SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
1543 retval = get_windows_debug_event (ops, pid, ourstatus);
1544 SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
1547 return ptid_build (current_event.dwProcessId, 0, retval);
1552 if (deprecated_ui_loop_hook != NULL)
1553 detach = deprecated_ui_loop_hook (0);
1556 windows_kill_inferior (ops);
1562 do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
1564 extern int stop_after_trap;
1566 struct inferior *inf;
1567 struct thread_info *tp;
1569 last_sig = TARGET_SIGNAL_0;
1571 exception_count = 0;
1572 open_process_used = 0;
1573 debug_registers_changed = 0;
1574 debug_registers_used = 0;
1575 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1578 cygwin_load_start = cygwin_load_end = 0;
1580 current_event.dwProcessId = pid;
1581 memset (¤t_event, 0, sizeof (current_event));
1583 disable_breakpoints_in_shlibs ();
1584 windows_clear_solib ();
1585 clear_proceed_status ();
1586 init_wait_for_inferior ();
1588 inf = current_inferior ();
1589 inferior_appeared (inf, pid);
1590 inf->attach_flag = attaching;
1592 /* Make the new process the current inferior, so terminal handling
1593 can rely on it. When attaching, we don't know about any thread
1594 id here, but that's OK --- nothing should be referencing the
1595 current thread until we report an event out of windows_wait. */
1596 inferior_ptid = pid_to_ptid (pid);
1598 terminal_init_inferior_with_pgrp (pid);
1599 target_terminal_inferior ();
1601 inf->stop_soon = STOP_QUIETLY;
1604 stop_after_trap = 1;
1605 wait_for_inferior (0);
1606 tp = inferior_thread ();
1607 if (tp->stop_signal != TARGET_SIGNAL_TRAP)
1608 resume (0, tp->stop_signal);
1613 inf->stop_soon = NO_STOP_QUIETLY;
1614 stop_after_trap = 0;
1618 /* Try to set or remove a user privilege to the current process. Return -1
1619 if that fails, the previous setting of that privilege otherwise.
1621 This code is copied from the Cygwin source code and rearranged to allow
1622 dynamically loading of the needed symbols from advapi32 which is only
1623 available on NT/2K/XP. */
1625 set_process_privilege (const char *privilege, BOOL enable)
1627 HANDLE token_hdl = NULL;
1629 TOKEN_PRIVILEGES new_priv, orig_priv;
1633 if (!OpenProcessToken (GetCurrentProcess (),
1634 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1638 if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
1641 new_priv.PrivilegeCount = 1;
1642 new_priv.Privileges[0].Luid = restore_priv;
1643 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1645 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1646 sizeof orig_priv, &orig_priv, &size))
1649 /* Disabled, otherwise every `attach' in an unprivileged user session
1650 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1651 windows_attach(). */
1652 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1653 be enabled. GetLastError () returns an correct error code, though. */
1654 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1658 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1662 CloseHandle (token_hdl);
1667 /* Attach to process PID, then initialize for debugging it. */
1669 windows_attach (struct target_ops *ops, char *args, int from_tty)
1675 error_no_arg (_("process-id to attach"));
1677 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1679 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1680 printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
1683 pid = strtoul (args, 0, 0); /* Windows pid */
1685 windows_init_thread_list ();
1686 ok = DebugActiveProcess (pid);
1692 /* Try fall back to Cygwin pid */
1693 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1696 ok = DebugActiveProcess (pid);
1701 error (_("Can't attach to process."));
1703 DebugSetProcessKillOnExit (FALSE);
1707 char *exec_file = (char *) get_exec_file (0);
1710 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1711 target_pid_to_str (pid_to_ptid (pid)));
1713 printf_unfiltered ("Attaching to %s\n",
1714 target_pid_to_str (pid_to_ptid (pid)));
1716 gdb_flush (gdb_stdout);
1719 do_initial_windows_stuff (ops, pid, 1);
1720 target_terminal_ours ();
1724 windows_detach (struct target_ops *ops, char *args, int from_tty)
1729 windows_resume (ops, ptid, 0, TARGET_SIGNAL_0);
1731 if (!DebugActiveProcessStop (current_event.dwProcessId))
1733 error (_("Can't detach process %lu (error %lu)"),
1734 current_event.dwProcessId, GetLastError ());
1737 DebugSetProcessKillOnExit (FALSE);
1739 if (detached && from_tty)
1741 char *exec_file = get_exec_file (0);
1744 printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
1745 current_event.dwProcessId);
1746 gdb_flush (gdb_stdout);
1749 inferior_ptid = null_ptid;
1750 detach_inferior (current_event.dwProcessId);
1752 unpush_target (ops);
1756 windows_pid_to_exec_file (int pid)
1758 static char path[MAX_PATH + 1];
1761 /* Try to find exe name as symlink target of /proc/<pid>/exe */
1763 char procexe[sizeof ("/proc/4294967295/exe")];
1764 sprintf (procexe, "/proc/%u/exe", pid);
1765 nchars = readlink (procexe, path, sizeof(path));
1766 if (nchars > 0 && nchars < sizeof (path))
1768 path[nchars] = '\0'; /* Got it */
1773 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
1774 of gdb, or we're trying to debug a non-Cygwin windows executable. */
1775 if (!get_module_name (0, path))
1781 /* Print status information about what we're accessing. */
1784 windows_files_info (struct target_ops *ignore)
1786 struct inferior *inf = current_inferior ();
1788 printf_unfiltered ("\tUsing the running image of %s %s.\n",
1789 inf->attach_flag ? "attached" : "child",
1790 target_pid_to_str (inferior_ptid));
1794 windows_open (char *arg, int from_tty)
1796 error (_("Use the \"run\" command to start a Unix child process."));
1799 /* Start an inferior windows child process and sets inferior_ptid to its pid.
1800 EXEC_FILE is the file to run.
1801 ALLARGS is a string containing the arguments to the program.
1802 ENV is the environment vector to pass. Errors reported with error(). */
1805 windows_create_inferior (struct target_ops *ops, char *exec_file,
1806 char *allargs, char **in_env, int from_tty)
1809 PROCESS_INFORMATION pi;
1813 char real_path[MAXPATHLEN];
1815 char shell[MAX_PATH + 1]; /* Path to shell */
1819 int ostdin, ostdout, ostderr;
1823 const char *inferior_io_terminal = get_inferior_io_terminal ();
1826 error (_("No executable specified, use `target exec'."));
1828 memset (&si, 0, sizeof (si));
1829 si.cb = sizeof (si);
1834 flags = DEBUG_ONLY_THIS_PROCESS;
1835 cygwin_conv_to_win32_path (exec_file, real_path);
1841 sh = getenv ("SHELL");
1844 cygwin_conv_to_win32_path (sh, shell);
1845 newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
1846 + strlen (allargs) + 2);
1847 sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
1848 allargs = newallargs;
1850 flags = DEBUG_PROCESS;
1854 flags = DEBUG_ONLY_THIS_PROCESS;
1858 flags |= CREATE_NEW_PROCESS_GROUP;
1861 flags |= CREATE_NEW_CONSOLE;
1863 args = alloca (strlen (toexec) + strlen (allargs) + 2);
1864 strcpy (args, toexec);
1866 strcat (args, allargs);
1869 /* Prepare the environment vars for CreateProcess. */
1870 cygwin_internal (CW_SYNC_WINENV);
1872 if (!inferior_io_terminal)
1873 tty = ostdin = ostdout = ostderr = -1;
1876 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
1879 print_sys_errmsg (inferior_io_terminal, errno);
1880 ostdin = ostdout = ostderr = -1;
1893 if (!inferior_io_terminal)
1894 tty = INVALID_HANDLE_VALUE;
1897 SECURITY_ATTRIBUTES sa;
1898 sa.nLength = sizeof(sa);
1899 sa.lpSecurityDescriptor = 0;
1900 sa.bInheritHandle = TRUE;
1901 tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
1902 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
1903 if (tty == INVALID_HANDLE_VALUE)
1904 warning (_("Warning: Failed to open TTY %s, error %#x."),
1905 inferior_io_terminal, (unsigned) GetLastError ());
1909 si.hStdOutput = tty;
1911 si.dwFlags |= STARTF_USESTDHANDLES;
1916 windows_init_thread_list ();
1917 ret = CreateProcess (0,
1918 args, /* command line */
1919 NULL, /* Security */
1921 TRUE, /* inherit handles */
1922 flags, /* start flags */
1923 NULL, /* environment */
1924 NULL, /* current directory */
1940 if (tty != INVALID_HANDLE_VALUE)
1945 error (_("Error creating process %s, (error %d)."),
1946 exec_file, (unsigned) GetLastError ());
1948 CloseHandle (pi.hThread);
1949 CloseHandle (pi.hProcess);
1951 if (useshell && shell[0] != '\0')
1956 do_initial_windows_stuff (ops, pi.dwProcessId, 0);
1958 /* windows_continue (DBG_CONTINUE, -1); */
1962 windows_mourn_inferior (struct target_ops *ops)
1964 (void) windows_continue (DBG_CONTINUE, -1);
1965 i386_cleanup_dregs();
1966 if (open_process_used)
1968 CHECK (CloseHandle (current_process_handle));
1969 open_process_used = 0;
1971 unpush_target (ops);
1972 generic_mourn_inferior ();
1975 /* Send a SIGINT to the process group. This acts just like the user typed a
1976 ^C on the controlling terminal. */
1979 windows_stop (ptid_t ptid)
1981 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
1982 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
1983 registers_changed (); /* refresh register state */
1987 windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
1988 int write, struct mem_attrib *mem,
1989 struct target_ops *target)
1994 DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
1995 len, (DWORD) (uintptr_t) memaddr));
1996 if (!WriteProcessMemory (current_process_handle,
1997 (LPVOID) (uintptr_t) memaddr, our,
2000 FlushInstructionCache (current_process_handle,
2001 (LPCVOID) (uintptr_t) memaddr, len);
2005 DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
2006 len, (DWORD) (uintptr_t) memaddr));
2007 if (!ReadProcessMemory (current_process_handle,
2008 (LPCVOID) (uintptr_t) memaddr, our,
2016 windows_kill_inferior (struct target_ops *ops)
2018 CHECK (TerminateProcess (current_process_handle, 0));
2022 if (!windows_continue (DBG_CONTINUE, -1))
2024 if (!WaitForDebugEvent (¤t_event, INFINITE))
2026 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
2030 target_mourn_inferior (); /* or just windows_mourn_inferior? */
2034 windows_prepare_to_store (struct regcache *regcache)
2036 /* Do nothing, since we can store individual regs */
2040 windows_can_run (void)
2046 windows_close (int x)
2048 DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
2049 PIDGET (inferior_ptid)));
2052 /* Convert pid to printable format. */
2054 windows_pid_to_str (struct target_ops *ops, ptid_t ptid)
2056 static char buf[80];
2058 if (ptid_get_tid (ptid) != 0)
2060 snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
2061 ptid_get_pid (ptid), ptid_get_tid (ptid));
2065 return normal_pid_to_str (ptid);
2069 windows_xfer_shared_libraries (struct target_ops *ops,
2070 enum target_object object, const char *annex,
2071 gdb_byte *readbuf, const gdb_byte *writebuf,
2072 ULONGEST offset, LONGEST len)
2074 struct obstack obstack;
2082 obstack_init (&obstack);
2083 obstack_grow_str (&obstack, "<library-list>\n");
2084 for (so = solib_start.next; so; so = so->next)
2085 windows_xfer_shared_library (so->so_name, (CORE_ADDR) (uintptr_t) so->lm_info->load_addr,
2086 target_gdbarch, &obstack);
2087 obstack_grow_str0 (&obstack, "</library-list>\n");
2089 buf = obstack_finish (&obstack);
2090 len_avail = strlen (buf);
2091 if (offset >= len_avail)
2094 if (len > len_avail - offset)
2095 len = len_avail - offset;
2096 memcpy (readbuf, buf + offset, len);
2098 obstack_free (&obstack, NULL);
2103 windows_xfer_partial (struct target_ops *ops, enum target_object object,
2104 const char *annex, gdb_byte *readbuf,
2105 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
2109 case TARGET_OBJECT_MEMORY:
2111 return (*ops->deprecated_xfer_memory) (offset, readbuf,
2112 len, 0/*read*/, NULL, ops);
2114 return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
2115 len, 1/*write*/, NULL, ops);
2118 case TARGET_OBJECT_LIBRARIES:
2119 return windows_xfer_shared_libraries (ops, object, annex, readbuf,
2120 writebuf, offset, len);
2123 if (ops->beneath != NULL)
2124 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
2125 readbuf, writebuf, offset, len);
2131 windows_get_ada_task_ptid (long lwp, long thread)
2133 return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
2137 init_windows_ops (void)
2139 windows_ops.to_shortname = "child";
2140 windows_ops.to_longname = "Win32 child process";
2141 windows_ops.to_doc = "Win32 child process (started by the \"run\" command).";
2142 windows_ops.to_open = windows_open;
2143 windows_ops.to_close = windows_close;
2144 windows_ops.to_attach = windows_attach;
2145 windows_ops.to_attach_no_wait = 1;
2146 windows_ops.to_detach = windows_detach;
2147 windows_ops.to_resume = windows_resume;
2148 windows_ops.to_wait = windows_wait;
2149 windows_ops.to_fetch_registers = windows_fetch_inferior_registers;
2150 windows_ops.to_store_registers = windows_store_inferior_registers;
2151 windows_ops.to_prepare_to_store = windows_prepare_to_store;
2152 windows_ops.deprecated_xfer_memory = windows_xfer_memory;
2153 windows_ops.to_xfer_partial = windows_xfer_partial;
2154 windows_ops.to_files_info = windows_files_info;
2155 windows_ops.to_insert_breakpoint = memory_insert_breakpoint;
2156 windows_ops.to_remove_breakpoint = memory_remove_breakpoint;
2157 windows_ops.to_terminal_init = terminal_init_inferior;
2158 windows_ops.to_terminal_inferior = terminal_inferior;
2159 windows_ops.to_terminal_ours_for_output = terminal_ours_for_output;
2160 windows_ops.to_terminal_ours = terminal_ours;
2161 windows_ops.to_terminal_save_ours = terminal_save_ours;
2162 windows_ops.to_terminal_info = child_terminal_info;
2163 windows_ops.to_kill = windows_kill_inferior;
2164 windows_ops.to_create_inferior = windows_create_inferior;
2165 windows_ops.to_mourn_inferior = windows_mourn_inferior;
2166 windows_ops.to_can_run = windows_can_run;
2167 windows_ops.to_thread_alive = windows_thread_alive;
2168 windows_ops.to_pid_to_str = windows_pid_to_str;
2169 windows_ops.to_stop = windows_stop;
2170 windows_ops.to_stratum = process_stratum;
2171 windows_ops.to_has_all_memory = default_child_has_all_memory;
2172 windows_ops.to_has_memory = default_child_has_memory;
2173 windows_ops.to_has_stack = default_child_has_stack;
2174 windows_ops.to_has_registers = default_child_has_registers;
2175 windows_ops.to_has_execution = default_child_has_execution;
2176 windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file;
2177 windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid;
2179 i386_use_watchpoints (&windows_ops);
2181 i386_dr_low.set_control = cygwin_set_dr7;
2182 i386_dr_low.set_addr = cygwin_set_dr;
2183 i386_dr_low.reset_addr = NULL;
2184 i386_dr_low.get_status = cygwin_get_dr6;
2186 /* i386_dr_low.debug_register_length field is set by
2187 calling i386_set_debug_register_length function
2188 in processor windows specific native file. */
2190 windows_ops.to_magic = OPS_MAGIC;
2194 set_windows_aliases (char *argv0)
2196 add_info_alias ("dll", "sharedlibrary", 1);
2200 _initialize_windows_nat (void)
2202 struct cmd_list_element *c;
2204 init_windows_ops ();
2206 c = add_com ("dll-symbols", class_files, dll_symbol_command,
2207 _("Load dll library symbols from FILE."));
2208 set_cmd_completer (c, filename_completer);
2210 add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
2212 add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1);
2214 add_com_alias ("assf", "dll-symbols", class_alias, 1);
2217 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
2218 Set use of shell to start subprocess."), _("\
2219 Show use of shell to start subprocess."), NULL,
2221 NULL, /* FIXME: i18n: */
2222 &setlist, &showlist);
2224 add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\
2225 Break when an exception is detected in the Cygwin DLL itself."), _("\
2226 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
2228 NULL, /* FIXME: i18n: */
2229 &setlist, &showlist);
2232 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
2233 Set creation of new console when creating child process."), _("\
2234 Show creation of new console when creating child process."), NULL,
2236 NULL, /* FIXME: i18n: */
2237 &setlist, &showlist);
2239 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
2240 Set creation of new group when creating child process."), _("\
2241 Show creation of new group when creating child process."), NULL,
2243 NULL, /* FIXME: i18n: */
2244 &setlist, &showlist);
2246 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
2247 Set whether to display execution in child process."), _("\
2248 Show whether to display execution in child process."), NULL,
2250 NULL, /* FIXME: i18n: */
2251 &setlist, &showlist);
2253 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
2254 Set whether to display kernel events in child process."), _("\
2255 Show whether to display kernel events in child process."), NULL,
2257 NULL, /* FIXME: i18n: */
2258 &setlist, &showlist);
2260 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
2261 Set whether to display memory accesses in child process."), _("\
2262 Show whether to display memory accesses in child process."), NULL,
2264 NULL, /* FIXME: i18n: */
2265 &setlist, &showlist);
2267 add_setshow_boolean_cmd ("debugexceptions", class_support,
2268 &debug_exceptions, _("\
2269 Set whether to display kernel exceptions in child process."), _("\
2270 Show whether to display kernel exceptions in child process."), NULL,
2272 NULL, /* FIXME: i18n: */
2273 &setlist, &showlist);
2275 add_prefix_cmd ("w32", class_info, info_w32_command,
2276 _("Print information specific to Win32 debugging."),
2277 &info_w32_cmdlist, "info w32 ", 0, &infolist);
2279 add_cmd ("selector", class_info, display_selectors,
2280 _("Display selectors infos."),
2282 add_target (&windows_ops);
2283 deprecated_init_ui_hook = set_windows_aliases;
2286 /* Hardware watchpoint support, adapted from go32-nat.c code. */
2288 /* Pass the address ADDR to the inferior in the I'th debug register.
2289 Here we just store the address in dr array, the registers will be
2290 actually set up when windows_continue is called. */
2292 cygwin_set_dr (int i, CORE_ADDR addr)
2295 internal_error (__FILE__, __LINE__,
2296 _("Invalid register %d in cygwin_set_dr.\n"), i);
2298 debug_registers_changed = 1;
2299 debug_registers_used = 1;
2302 /* Pass the value VAL to the inferior in the DR7 debug control
2303 register. Here we just store the address in D_REGS, the watchpoint
2304 will be actually set up in windows_wait. */
2306 cygwin_set_dr7 (unsigned long val)
2308 dr[7] = (CORE_ADDR) val;
2309 debug_registers_changed = 1;
2310 debug_registers_used = 1;
2313 /* Get the value of the DR6 debug status register from the inferior.
2314 Here we just return the value stored in dr[6]
2315 by the last call to thread_rec for current_event.dwThreadId id. */
2316 static unsigned long
2317 cygwin_get_dr6 (void)
2319 return (unsigned long) dr[6];
2322 /* Determine if the thread referenced by "ptid" is alive
2323 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
2324 it means that the thread has died. Otherwise it is assumed to be alive. */
2326 windows_thread_alive (struct target_ops *ops, ptid_t ptid)
2330 gdb_assert (ptid_get_tid (ptid) != 0);
2331 tid = ptid_get_tid (ptid);
2333 return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
2338 _initialize_check_for_gdb_ini (void)
2341 if (inhibit_gdbinit)
2344 homedir = getenv ("HOME");
2348 char *oldini = (char *) alloca (strlen (homedir) +
2349 sizeof ("/gdb.ini"));
2350 strcpy (oldini, homedir);
2351 p = strchr (oldini, '\0');
2352 if (p > oldini && p[-1] != '/')
2354 strcpy (p, "gdb.ini");
2355 if (access (oldini, 0) == 0)
2357 int len = strlen (oldini);
2358 char *newini = alloca (len + 1);
2359 sprintf (newini, "%.*s.gdbinit",
2360 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
2361 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
2366 /* Define dummy functions which always return error for the rare cases where
2367 these functions could not be found. */
2369 bad_DebugActiveProcessStop (DWORD w)
2374 bad_DebugBreakProcess (HANDLE w)
2379 bad_DebugSetProcessKillOnExit (BOOL w)
2384 bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
2389 bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
2394 bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
2400 bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
2405 /* Load any functions which may not be available in ancient versions
2408 _initialize_loadable (void)
2412 hm = LoadLibrary ("kernel32.dll");
2415 dyn_DebugActiveProcessStop = (void *)
2416 GetProcAddress (hm, "DebugActiveProcessStop");
2417 dyn_DebugBreakProcess = (void *)
2418 GetProcAddress (hm, "DebugBreakProcess");
2419 dyn_DebugSetProcessKillOnExit = (void *)
2420 GetProcAddress (hm, "DebugSetProcessKillOnExit");
2423 /* Set variables to dummy versions of these processes if the function
2424 wasn't found in kernel32.dll. */
2425 if (!dyn_DebugBreakProcess)
2426 dyn_DebugBreakProcess = bad_DebugBreakProcess;
2427 if (!dyn_DebugActiveProcessStop || !dyn_DebugSetProcessKillOnExit)
2429 dyn_DebugActiveProcessStop = bad_DebugActiveProcessStop;
2430 dyn_DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
2433 /* Load optional functions used for retrieving filename information
2434 associated with the currently debugged process or its dlls. */
2435 hm = LoadLibrary ("psapi.dll");
2438 dyn_EnumProcessModules = (void *)
2439 GetProcAddress (hm, "EnumProcessModules");
2440 dyn_GetModuleInformation = (void *)
2441 GetProcAddress (hm, "GetModuleInformation");
2442 dyn_GetModuleFileNameExA = (void *)
2443 GetProcAddress (hm, "GetModuleFileNameExA");
2446 if (!dyn_EnumProcessModules || !dyn_GetModuleInformation || !dyn_GetModuleFileNameExA)
2448 /* Set variables to dummy versions of these processes if the function
2449 wasn't found in psapi.dll. */
2450 dyn_EnumProcessModules = bad_EnumProcessModules;
2451 dyn_GetModuleInformation = bad_GetModuleInformation;
2452 dyn_GetModuleFileNameExA = bad_GetModuleFileNameExA;
2453 /* This will probably fail on Windows 9x/Me. Let the user know that we're
2454 missing some functionality. */
2455 warning(_("cannot automatically find executable file or library to read symbols.\nUse \"file\" or \"dll\" command to load executable/libraries directly."));
2458 hm = LoadLibrary ("advapi32.dll");
2461 dyn_OpenProcessToken = (void *)
2462 GetProcAddress (hm, "OpenProcessToken");
2463 dyn_LookupPrivilegeValueA = (void *)
2464 GetProcAddress (hm, "LookupPrivilegeValueA");
2465 dyn_AdjustTokenPrivileges = (void *)
2466 GetProcAddress (hm, "AdjustTokenPrivileges");
2467 /* Only need to set one of these since if OpenProcessToken fails nothing
2469 if (!dyn_OpenProcessToken || !dyn_LookupPrivilegeValueA || !dyn_AdjustTokenPrivileges)
2470 dyn_OpenProcessToken = bad_OpenProcessToken;