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>
44 #include <cygwin/version.h>
51 #include "gdb_obstack.h"
52 #include "gdb_string.h"
53 #include "gdbthread.h"
55 #include <sys/param.h>
60 #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"
70 #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
71 #define DebugActiveProcessStop dyn_DebugActiveProcessStop
72 #define DebugBreakProcess dyn_DebugBreakProcess
73 #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
74 #define EnumProcessModules dyn_EnumProcessModules
75 #define GetModuleInformation dyn_GetModuleInformation
76 #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
77 #define OpenProcessToken dyn_OpenProcessToken
79 static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
80 DWORD, PTOKEN_PRIVILEGES, PDWORD);
81 static BOOL WINAPI (*DebugActiveProcessStop) (DWORD);
82 static BOOL WINAPI (*DebugBreakProcess) (HANDLE);
83 static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL);
84 static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD,
86 static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
88 static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID);
89 static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
91 static struct target_ops windows_ops;
95 #undef GetModuleFileNameEx
98 # define __PMAX (MAX_PATH + 1)
99 static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD);
100 # define STARTUPINFO STARTUPINFOA
101 # define CreateProcess CreateProcessA
102 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
103 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
105 # define __PMAX PATH_MAX
106 /* The starting and ending address of the cygwin1.dll text segment. */
107 static CORE_ADDR cygwin_load_start;
108 static CORE_ADDR cygwin_load_end;
109 # if CYGWIN_VERSION_DLL_MAKE_COMBINED(CYGWIN_VERSION_API_MAJOR,CYGWIN_VERSION_API_MINOR) >= 181
111 typedef wchar_t cygwin_buf_t;
112 static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPWSTR, DWORD);
113 # define STARTUPINFO STARTUPINFOW
114 # define CreateProcess CreateProcessW
115 # define GetModuleFileNameEx_name "GetModuleFileNameExW"
116 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW
118 # define CCP_POSIX_TO_WIN_W 1
119 # define CCP_WIN_W_TO_POSIX 3
120 # define cygwin_conv_path(op, from, to, size) \
121 (op == CCP_WIN_W_TO_POSIX) ? \
122 cygwin_conv_to_full_posix_path (from, to) : \
123 cygwin_conv_to_win32_path (from, to)
124 typedef char cygwin_buf_t;
125 static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD);
126 # define STARTUPINFO STARTUPINFOA
127 # define CreateProcess CreateProcessA
128 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
129 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
130 # define CW_SET_DOS_FILE_WARNING -1 /* no-op this for older Cygwin */
134 static int have_saved_context; /* True if we've saved context from a cygwin signal. */
135 static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */
137 /* If we're not using the old Cygwin header file set, define the
138 following which never should have been in the generic Win32 API
139 headers in the first place since they were our own invention... */
140 #ifndef _GNU_H_WINDOWS_H
143 FLAG_TRACE_BIT = 0x100,
144 CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
148 #ifndef CONTEXT_EXTENDED_REGISTERS
149 /* This macro is only defined on ia32. It only makes sense on this target,
150 so define it as zero if not already defined. */
151 #define CONTEXT_EXTENDED_REGISTERS 0
154 #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
155 | CONTEXT_EXTENDED_REGISTERS
157 static uintptr_t dr[8];
158 static int debug_registers_changed;
159 static int debug_registers_used;
161 static int windows_initialization_done;
162 #define DR6_CLEAR_VALUE 0xffff0ff0
164 /* The string sent by cygwin when it processes a signal.
165 FIXME: This should be in a cygwin include file. */
166 #ifndef _CYGWIN_SIGNAL_STRING
167 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
170 #define CHECK(x) check (x, __FILE__,__LINE__)
171 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
172 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
173 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
174 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
176 static void windows_stop (ptid_t);
177 static int windows_thread_alive (struct target_ops *, ptid_t);
178 static void windows_kill_inferior (struct target_ops *);
180 static void cygwin_set_dr (int i, CORE_ADDR addr);
181 static void cygwin_set_dr7 (unsigned long val);
182 static unsigned long cygwin_get_dr6 (void);
184 static enum target_signal last_sig = TARGET_SIGNAL_0;
185 /* Set if a signal was received from the debugged process */
187 /* Thread information structure used to track information that is
188 not available in gdb's thread structure. */
189 typedef struct thread_info_struct
191 struct thread_info_struct *next;
202 static thread_info thread_head;
204 /* The process and thread handles for the above context. */
206 static DEBUG_EVENT current_event; /* The current debug event from
208 static HANDLE current_process_handle; /* Currently executing process */
209 static thread_info *current_thread; /* Info on currently selected thread */
210 static DWORD main_thread_id; /* Thread ID of the main thread */
212 /* Counts of things. */
213 static int exception_count = 0;
214 static int event_count = 0;
215 static int saw_create;
216 static int open_process_used = 0;
219 static int new_console = 0;
221 static int cygwin_exceptions = 0;
223 static int new_group = 1;
224 static int debug_exec = 0; /* show execution */
225 static int debug_events = 0; /* show events from kernel */
226 static int debug_memory = 0; /* show target memory accesses */
227 static int debug_exceptions = 0; /* show target exceptions */
228 static int useshell = 0; /* use shell for subprocesses */
230 /* This vector maps GDB's idea of a register's number into an offset
231 in the windows exception context vector.
233 It also contains the bit mask needed to load the register in question.
235 The contents of this table can only be computed by the units
236 that provide CPU-specific support for Windows native debugging.
237 These units should set the table by calling
238 windows_set_context_register_offsets.
240 One day we could read a reg, we could inspect the context we
241 already have loaded, if it doesn't have the bit set that we need,
242 we read that set of registers in using GetThreadContext. If the
243 context already contains what we need, we just unpack it. Then to
244 write a register, first we have to ensure that the context contains
245 the other regs of the group, and then we copy the info in and set
248 static const int *mappings;
250 /* This vector maps the target's idea of an exception (extracted
251 from the DEBUG_EVENT structure) to GDB's idea. */
253 struct xlate_exception
256 enum target_signal us;
259 static const struct xlate_exception
262 {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
263 {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
264 {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
265 {DBG_CONTROL_C, TARGET_SIGNAL_INT},
266 {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
267 {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
270 /* Set the MAPPINGS static global to OFFSETS.
271 See the description of MAPPINGS for more details. */
274 windows_set_context_register_offsets (const int *offsets)
280 check (BOOL ok, const char *file, int line)
283 printf_filtered ("error return %s:%d was %lu\n", file, line,
287 /* Find a thread record given a thread id. If GET_CONTEXT is not 0,
288 then also retrieve the context for this thread. If GET_CONTEXT is
289 negative, then don't suspend the thread. */
291 thread_rec (DWORD id, int get_context)
295 for (th = &thread_head; (th = th->next) != NULL;)
298 if (!th->suspended && get_context)
300 if (get_context > 0 && id != current_event.dwThreadId)
302 if (SuspendThread (th->h) == (DWORD) -1)
304 DWORD err = GetLastError ();
305 warning (_("SuspendThread failed. (winerr %d)"),
311 else if (get_context < 0)
313 th->reload_context = 1;
321 /* Add a thread to the thread list. */
323 windows_add_thread (ptid_t ptid, HANDLE h)
328 gdb_assert (ptid_get_tid (ptid) != 0);
330 id = ptid_get_tid (ptid);
332 if ((th = thread_rec (id, FALSE)))
335 th = XZALLOC (thread_info);
338 th->next = thread_head.next;
339 thread_head.next = th;
341 /* Set the debug registers for the new thread if they are used. */
342 if (debug_registers_used)
344 /* Only change the value of the debug registers. */
345 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
346 CHECK (GetThreadContext (th->h, &th->context));
347 th->context.Dr0 = dr[0];
348 th->context.Dr1 = dr[1];
349 th->context.Dr2 = dr[2];
350 th->context.Dr3 = dr[3];
351 th->context.Dr6 = DR6_CLEAR_VALUE;
352 th->context.Dr7 = dr[7];
353 CHECK (SetThreadContext (th->h, &th->context));
354 th->context.ContextFlags = 0;
359 /* Clear out any old thread list and reintialize it to a
362 windows_init_thread_list (void)
364 thread_info *th = &thread_head;
366 DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
368 while (th->next != NULL)
370 thread_info *here = th->next;
371 th->next = here->next;
374 thread_head.next = NULL;
377 /* Delete a thread from the list of threads */
379 windows_delete_thread (ptid_t ptid)
384 gdb_assert (ptid_get_tid (ptid) != 0);
386 id = ptid_get_tid (ptid);
389 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
390 delete_thread (ptid);
392 for (th = &thread_head;
393 th->next != NULL && th->next->id != id;
397 if (th->next != NULL)
399 thread_info *here = th->next;
400 th->next = here->next;
406 do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
408 char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
409 struct gdbarch *gdbarch = get_regcache_arch (regcache);
410 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
414 return; /* Windows sometimes uses a non-existent thread id in its
417 if (current_thread->reload_context)
419 #ifdef __COPY_CONTEXT_SIZE
420 if (have_saved_context)
422 /* Lie about where the program actually is stopped since cygwin has informed us that
423 we should consider the signal to have occurred at another location which is stored
424 in "saved_context. */
425 memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE);
426 have_saved_context = 0;
431 thread_info *th = current_thread;
432 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
433 GetThreadContext (th->h, &th->context);
434 /* Copy dr values from that thread.
435 But only if there were not modified since last stop. PR gdb/2388 */
436 if (!debug_registers_changed)
438 dr[0] = th->context.Dr0;
439 dr[1] = th->context.Dr1;
440 dr[2] = th->context.Dr2;
441 dr[3] = th->context.Dr3;
442 dr[6] = th->context.Dr6;
443 dr[7] = th->context.Dr7;
446 current_thread->reload_context = 0;
449 if (r == I387_FISEG_REGNUM (tdep))
451 l = *((long *) context_offset) & 0xffff;
452 regcache_raw_supply (regcache, r, (char *) &l);
454 else if (r == I387_FOP_REGNUM (tdep))
456 l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
457 regcache_raw_supply (regcache, r, (char *) &l);
460 regcache_raw_supply (regcache, r, context_offset);
463 for (r = 0; r < gdbarch_num_regs (gdbarch); r++)
464 do_windows_fetch_inferior_registers (regcache, r);
469 windows_fetch_inferior_registers (struct target_ops *ops,
470 struct regcache *regcache, int r)
472 current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
473 /* Check if current_thread exists. Windows sometimes uses a non-existent
474 thread id in its events */
476 do_windows_fetch_inferior_registers (regcache, r);
480 do_windows_store_inferior_registers (const struct regcache *regcache, int r)
483 /* Windows sometimes uses a non-existent thread id in its events */;
485 regcache_raw_collect (regcache, r,
486 ((char *) ¤t_thread->context) + mappings[r]);
489 for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
490 do_windows_store_inferior_registers (regcache, r);
494 /* Store a new register value into the current thread context */
496 windows_store_inferior_registers (struct target_ops *ops,
497 struct regcache *regcache, int r)
499 current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
500 /* Check if current_thread exists. Windows sometimes uses a non-existent
501 thread id in its events */
503 do_windows_store_inferior_registers (regcache, r);
506 /* Get the name of a given module at at given base address. If base_address
507 is zero return the first loaded module (which is always the name of the
510 get_module_name (LPVOID base_address, char *dll_name_ret)
516 HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */
519 cygwin_buf_t pathbuf[__PMAX]; /* Temporary storage prior to converting to
520 posix form. __PMAX is always enough
521 as long as SO_NAME_MAX_PATH_SIZE is defined
526 /* Find size of buffer needed to handle list of modules loaded in inferior */
527 if (!EnumProcessModules (current_process_handle, DllHandle,
528 sizeof (HMODULE), &cbNeeded) || !cbNeeded)
531 /* Allocate correct amount of space for module list */
532 DllHandle = (HMODULE *) alloca (cbNeeded);
536 /* Get the list of modules */
537 if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
541 for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
543 /* Get information on this module */
544 if (!GetModuleInformation (current_process_handle, DllHandle[i],
546 error (_("Can't get module info"));
548 if (!base_address || mi.lpBaseOfDll == base_address)
550 /* Try to find the name of the given module */
552 /* Cygwin prefers that the path be in /x/y/z format */
553 len = GetModuleFileNameEx (current_process_handle,
554 DllHandle[i], pathbuf, __PMAX);
556 error (_("Error getting dll name: %lu."), GetLastError ());
557 if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, dll_name_ret,
559 error (_("Error converting dll name to POSIX: %d."), errno);
561 len = GetModuleFileNameEx (current_process_handle,
562 DllHandle[i], dll_name_ret, __PMAX);
564 error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
566 return 1; /* success */
571 dll_name_ret[0] = '\0';
572 return 0; /* failure */
575 /* Encapsulate the information required in a call to
576 symbol_file_add_args */
577 struct safe_symbol_file_add_args
581 struct section_addr_info *addrs;
584 struct ui_file *err, *out;
588 /* Maintain a linked list of "so" information. */
594 static struct so_list solib_start, *solib_end;
596 /* Call symbol_file_add with stderr redirected. We don't care if there
599 safe_symbol_file_add_stub (void *argv)
601 #define p ((struct safe_symbol_file_add_args *) argv)
602 const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0)
603 | (p->mainline ? SYMFILE_MAINLINE : 0));
604 p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags);
609 /* Restore gdb's stderr after calling symbol_file_add */
611 safe_symbol_file_add_cleanup (void *p)
613 #define sp ((struct safe_symbol_file_add_args *)p)
614 gdb_flush (gdb_stderr);
615 gdb_flush (gdb_stdout);
616 ui_file_delete (gdb_stderr);
617 ui_file_delete (gdb_stdout);
618 gdb_stderr = sp->err;
619 gdb_stdout = sp->out;
623 /* symbol_file_add wrapper that prevents errors from being displayed. */
624 static struct objfile *
625 safe_symbol_file_add (char *name, int from_tty,
626 struct section_addr_info *addrs,
627 int mainline, int flags)
629 struct safe_symbol_file_add_args p;
630 struct cleanup *cleanup;
632 cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
636 gdb_flush (gdb_stderr);
637 gdb_flush (gdb_stdout);
638 gdb_stderr = ui_file_new ();
639 gdb_stdout = ui_file_new ();
641 p.from_tty = from_tty;
643 p.mainline = mainline;
645 catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
647 do_cleanups (cleanup);
651 static struct so_list *
652 windows_make_so (const char *name, LPVOID load_addr)
659 WIN32_FIND_DATA w32_fd;
660 HANDLE h = FindFirstFile(name, &w32_fd);
662 if (h == INVALID_HANDLE_VALUE)
668 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
670 p = strrchr (buf, '\\');
673 SetCurrentDirectory (buf);
674 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
675 SetCurrentDirectory (cwd);
678 if (strcasecmp (buf, "ntdll.dll") == 0)
680 GetSystemDirectory (buf, sizeof (buf));
681 strcat (buf, "\\ntdll.dll");
684 cygwin_buf_t buf[__PMAX];
687 if (access (name, F_OK) != 0)
689 if (strcasecmp (name, "ntdll.dll") == 0)
692 GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t));
693 wcscat (buf, L"\\ntdll.dll");
697 GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t));
698 strcat (buf, "\\ntdll.dll");
703 so = XZALLOC (struct so_list);
704 so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
705 so->lm_info->load_addr = load_addr;
706 strcpy (so->so_original_name, name);
708 strcpy (so->so_name, buf);
711 cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name,
712 SO_NAME_MAX_PATH_SIZE);
715 char *rname = realpath (name, NULL);
716 if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE)
718 strcpy (so->so_name, rname);
722 error (_("dll path too long"));
724 /* Record cygwin1.dll .text start/end. */
725 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
726 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
729 asection *text = NULL;
732 abfd = bfd_openr (so->so_name, "pei-i386");
737 if (bfd_check_format (abfd, bfd_object))
738 text = bfd_get_section_by_name (abfd, ".text");
746 /* The symbols in a dll are offset by 0x1000, which is the the
747 offset from 0 of the first byte in an image - because of the
748 file header and the section alignment. */
749 cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *) load_addr + 0x1000);
750 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
760 get_image_name (HANDLE h, void *address, int unicode)
763 static char buf[__PMAX];
765 static char buf[(2 * __PMAX) + 1];
767 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
773 /* Attempt to read the name of the dll that was detected.
774 This is documented to work only when actively debugging
775 a program. It will not work for attached processes. */
779 /* See if we could read the address of a string, and that the
780 address isn't null. */
781 if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
782 || done != sizeof (address_ptr) || !address_ptr)
785 /* Find the length of the string */
786 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
787 && (b[0] != 0 || b[size - 1] != 0) && done == size)
791 ReadProcessMemory (h, address_ptr, buf, len, &done);
794 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
795 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
798 wcstombs (buf, unicode_address, __PMAX);
800 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf,
808 /* Wait for child to do something. Return pid of child, or -1 in case
809 of error; store status through argument pointer OURSTATUS. */
811 handle_load_dll (void *dummy)
813 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
814 char dll_buf[__PMAX];
815 char *dll_name = NULL;
817 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
819 if (!get_module_name (event->lpBaseOfDll, dll_buf))
820 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
824 if (*dll_name == '\0')
825 dll_name = get_image_name (current_process_handle,
826 event->lpImageName, event->fUnicode);
830 solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
831 solib_end = solib_end->next;
833 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
834 host_address_to_string (solib_end->lm_info->load_addr)));
840 windows_free_so (struct so_list *so)
848 handle_unload_dll (void *dummy)
850 LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
853 for (so = &solib_start; so->next != NULL; so = so->next)
854 if (so->next->lm_info->load_addr == lpBaseOfDll)
856 struct so_list *sodel = so->next;
857 so->next = sodel->next;
860 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
862 windows_free_so (sodel);
863 solib_add (NULL, 0, NULL, auto_solib_add);
867 /* We did not find any DLL that was previously loaded at this address,
868 so register a complaint. We do not report an error, because we have
869 observed that this may be happening under some circumstances. For
870 instance, running 32bit applications on x64 Windows causes us to receive
871 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these
872 events are apparently caused by the WOW layer, the interface between
873 32bit and 64bit worlds). */
874 complaint (&symfile_complaints, _("dll starting at %s not found."),
875 host_address_to_string (lpBaseOfDll));
880 /* Clear list of loaded DLLs. */
882 windows_clear_solib (void)
884 solib_start.next = NULL;
885 solib_end = &solib_start;
888 /* Load DLL symbol info. */
890 dll_symbol_command (char *args, int from_tty)
896 error (_("dll-symbols requires a file name"));
899 if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
901 char *newargs = (char *) alloca (n + 4 + 1);
902 strcpy (newargs, args);
903 strcat (newargs, ".dll");
907 safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
910 /* Handle DEBUG_STRING output from child process.
911 Cygwin prepends its messages with a "cygwin:". Interpret this as
912 a Cygwin signal. Otherwise just print the string as a warning. */
914 handle_output_debug_string (struct target_waitstatus *ourstatus)
919 if (!target_read_string
920 ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
924 else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
927 if (strncmp (s, "cYg", 3) != 0)
931 #ifdef __COPY_CONTEXT_SIZE
934 /* Got a cygwin signal marker. A cygwin signal is followed by the signal number
935 itself and then optionally followed by the thread id and address to saved context
936 within the DLL. If these are supplied, then the given thread is assumed to have
937 issued the signal and the context from the thread is assumed to be stored at the
938 given address in the inferior. Tell gdb to treat this like a real signal. */
940 int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
941 int gotasig = target_signal_from_host (sig);
942 ourstatus->value.sig = gotasig;
947 ourstatus->kind = TARGET_WAITKIND_STOPPED;
948 retval = strtoul (p, &p, 0);
950 retval = main_thread_id;
951 else if ((x = (LPCVOID) strtoul (p, &p, 0))
952 && ReadProcessMemory (current_process_handle, x,
953 &saved_context, __COPY_CONTEXT_SIZE, &n)
954 && n == __COPY_CONTEXT_SIZE)
955 have_saved_context = 1;
956 current_event.dwThreadId = retval;
967 display_selector (HANDLE thread, DWORD sel)
970 if (GetThreadSelectorEntry (thread, sel, &info))
973 printf_filtered ("0x%03lx: ", sel);
974 if (!info.HighWord.Bits.Pres)
976 puts_filtered ("Segment not present\n");
979 base = (info.HighWord.Bits.BaseHi << 24) +
980 (info.HighWord.Bits.BaseMid << 16)
982 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
983 if (info.HighWord.Bits.Granularity)
984 limit = (limit << 12) | 0xfff;
985 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
986 if (info.HighWord.Bits.Default_Big)
987 puts_filtered(" 32-bit ");
989 puts_filtered(" 16-bit ");
990 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
993 puts_filtered ("Data (Read-Only, Exp-up");
996 puts_filtered ("Data (Read/Write, Exp-up");
999 puts_filtered ("Unused segment (");
1002 puts_filtered ("Data (Read/Write, Exp-down");
1005 puts_filtered ("Code (Exec-Only, N.Conf");
1008 puts_filtered ("Code (Exec/Read, N.Conf");
1011 puts_filtered ("Code (Exec-Only, Conf");
1014 puts_filtered ("Code (Exec/Read, Conf");
1017 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
1019 if ((info.HighWord.Bits.Type & 0x1) == 0)
1020 puts_filtered(", N.Acc");
1021 puts_filtered (")\n");
1022 if ((info.HighWord.Bits.Type & 0x10) == 0)
1023 puts_filtered("System selector ");
1024 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
1025 if (info.HighWord.Bits.Granularity)
1026 puts_filtered ("Page granular.\n");
1028 puts_filtered ("Byte granular.\n");
1033 printf_filtered ("Invalid selector 0x%lx.\n",sel);
1039 display_selectors (char * args, int from_tty)
1041 if (!current_thread)
1043 puts_filtered ("Impossible to display selectors now.\n");
1049 puts_filtered ("Selector $cs\n");
1050 display_selector (current_thread->h,
1051 current_thread->context.SegCs);
1052 puts_filtered ("Selector $ds\n");
1053 display_selector (current_thread->h,
1054 current_thread->context.SegDs);
1055 puts_filtered ("Selector $es\n");
1056 display_selector (current_thread->h,
1057 current_thread->context.SegEs);
1058 puts_filtered ("Selector $ss\n");
1059 display_selector (current_thread->h,
1060 current_thread->context.SegSs);
1061 puts_filtered ("Selector $fs\n");
1062 display_selector (current_thread->h,
1063 current_thread->context.SegFs);
1064 puts_filtered ("Selector $gs\n");
1065 display_selector (current_thread->h,
1066 current_thread->context.SegGs);
1071 sel = parse_and_eval_long (args);
1072 printf_filtered ("Selector \"%s\"\n",args);
1073 display_selector (current_thread->h, sel);
1077 static struct cmd_list_element *info_w32_cmdlist = NULL;
1080 info_w32_command (char *args, int from_tty)
1082 help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
1086 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
1087 printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
1088 host_address_to_string (\
1089 current_event.u.Exception.ExceptionRecord.ExceptionAddress))
1092 handle_exception (struct target_waitstatus *ourstatus)
1095 DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
1097 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1099 /* Record the context of the current thread */
1100 th = thread_rec (current_event.dwThreadId, -1);
1104 case EXCEPTION_ACCESS_VIOLATION:
1105 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1106 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1109 /* See if the access violation happened within the cygwin DLL itself. Cygwin uses
1110 a kind of exception handling to deal with passed-in invalid addresses. gdb
1111 should not treat these as real SEGVs since they will be silently handled by
1112 cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process
1113 and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up
1114 within the text segment of the DLL itself. */
1116 CORE_ADDR addr = (CORE_ADDR) (uintptr_t) current_event.u.Exception.ExceptionRecord.ExceptionAddress;
1117 if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end))
1118 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1119 && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0))
1124 case STATUS_STACK_OVERFLOW:
1125 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1126 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1128 case STATUS_FLOAT_DENORMAL_OPERAND:
1129 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1130 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1132 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1133 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1134 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1136 case STATUS_FLOAT_INEXACT_RESULT:
1137 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1138 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1140 case STATUS_FLOAT_INVALID_OPERATION:
1141 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1142 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1144 case STATUS_FLOAT_OVERFLOW:
1145 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1146 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1148 case STATUS_FLOAT_STACK_CHECK:
1149 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1150 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1152 case STATUS_FLOAT_UNDERFLOW:
1153 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1154 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1156 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1157 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1158 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1160 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1161 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1162 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1164 case STATUS_INTEGER_OVERFLOW:
1165 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1166 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1168 case EXCEPTION_BREAKPOINT:
1169 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1170 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1173 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1174 ourstatus->value.sig = TARGET_SIGNAL_INT;
1176 case DBG_CONTROL_BREAK:
1177 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1178 ourstatus->value.sig = TARGET_SIGNAL_INT;
1180 case EXCEPTION_SINGLE_STEP:
1181 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1182 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1184 case EXCEPTION_ILLEGAL_INSTRUCTION:
1185 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1186 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1188 case EXCEPTION_PRIV_INSTRUCTION:
1189 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1190 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1192 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1193 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1194 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1197 /* Treat unhandled first chance exceptions specially. */
1198 if (current_event.u.Exception.dwFirstChance)
1200 printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n",
1201 current_event.u.Exception.ExceptionRecord.ExceptionCode,
1202 host_address_to_string (
1203 current_event.u.Exception.ExceptionRecord.ExceptionAddress));
1204 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
1208 last_sig = ourstatus->value.sig;
1212 /* Resume all artificially suspended threads if we are continuing
1215 windows_continue (DWORD continue_status, int id)
1221 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%lx, %s);\n",
1222 current_event.dwProcessId, current_event.dwThreadId,
1223 continue_status == DBG_CONTINUE ?
1224 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1226 for (th = &thread_head; (th = th->next) != NULL;)
1227 if ((id == -1 || id == (int) th->id)
1230 if (debug_registers_changed)
1232 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1233 th->context.Dr0 = dr[0];
1234 th->context.Dr1 = dr[1];
1235 th->context.Dr2 = dr[2];
1236 th->context.Dr3 = dr[3];
1237 th->context.Dr6 = DR6_CLEAR_VALUE;
1238 th->context.Dr7 = dr[7];
1240 if (th->context.ContextFlags)
1242 CHECK (SetThreadContext (th->h, &th->context));
1243 th->context.ContextFlags = 0;
1245 if (th->suspended > 0)
1246 (void) ResumeThread (th->h);
1250 res = ContinueDebugEvent (current_event.dwProcessId,
1251 current_event.dwThreadId,
1254 debug_registers_changed = 0;
1258 /* Called in pathological case where Windows fails to send a
1259 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1261 fake_create_process (void)
1263 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1264 current_event.dwProcessId);
1265 if (current_process_handle != NULL)
1266 open_process_used = 1;
1269 error (_("OpenProcess call failed, GetLastError = %lud\n"),
1271 /* We can not debug anything in that case. */
1273 main_thread_id = current_event.dwThreadId;
1274 current_thread = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1275 current_event.dwThreadId),
1276 current_event.u.CreateThread.hThread);
1277 return main_thread_id;
1281 windows_resume (struct target_ops *ops,
1282 ptid_t ptid, int step, enum target_signal sig)
1285 DWORD continue_status = DBG_CONTINUE;
1287 /* A specific PTID means `step only this thread id'. */
1288 int resume_all = ptid_equal (ptid, minus_one_ptid);
1290 /* If we're continuing all threads, it's the current inferior that
1291 should be handled specially. */
1293 ptid = inferior_ptid;
1295 if (sig != TARGET_SIGNAL_0)
1297 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1299 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1301 else if (sig == last_sig)
1302 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1305 /* This code does not seem to work, because
1306 the kernel does probably not consider changes in the ExceptionRecord
1307 structure when passing the exception to the inferior.
1308 Note that this seems possible in the exception handler itself. */
1311 for (i = 0; xlate[i].them != -1; i++)
1312 if (xlate[i].us == sig)
1314 current_event.u.Exception.ExceptionRecord.ExceptionCode =
1316 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1319 if (continue_status == DBG_CONTINUE)
1321 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1325 DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
1329 last_sig = TARGET_SIGNAL_0;
1331 DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
1332 ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
1334 /* Get context for currently selected thread */
1335 th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
1340 /* Single step by setting t bit */
1341 struct regcache *regcache = get_current_regcache ();
1342 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1343 windows_fetch_inferior_registers (ops, regcache,
1344 gdbarch_ps_regnum (gdbarch));
1345 th->context.EFlags |= FLAG_TRACE_BIT;
1348 if (th->context.ContextFlags)
1350 if (debug_registers_changed)
1352 th->context.Dr0 = dr[0];
1353 th->context.Dr1 = dr[1];
1354 th->context.Dr2 = dr[2];
1355 th->context.Dr3 = dr[3];
1356 th->context.Dr6 = DR6_CLEAR_VALUE;
1357 th->context.Dr7 = dr[7];
1359 CHECK (SetThreadContext (th->h, &th->context));
1360 th->context.ContextFlags = 0;
1364 /* Allow continuing with the same signal that interrupted us.
1365 Otherwise complain. */
1368 windows_continue (continue_status, -1);
1370 windows_continue (continue_status, ptid_get_tid (ptid));
1373 /* Ctrl-C handler used when the inferior is not run in the same console. The
1374 handler is in charge of interrupting the inferior using DebugBreakProcess.
1375 Note that this function is not available prior to Windows XP. In this case
1376 we emit a warning. */
1378 ctrl_c_handler (DWORD event_type)
1380 const int attach_flag = current_inferior ()->attach_flag;
1382 /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
1383 if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
1386 /* If the inferior and the debugger share the same console, do nothing as
1387 the inferior has also received the Ctrl-C event. */
1388 if (!new_console && !attach_flag)
1391 if (!DebugBreakProcess (current_process_handle))
1393 Could not interrupt program. Press Ctrl-c in the program console."));
1395 /* Return true to tell that Ctrl-C has been handled. */
1399 /* Get the next event from the child. Return 1 if the event requires
1400 handling by WFI (or whatever). */
1402 get_windows_debug_event (struct target_ops *ops,
1403 int pid, struct target_waitstatus *ourstatus)
1406 DWORD continue_status, event_code;
1408 static thread_info dummy_thread_info;
1411 last_sig = TARGET_SIGNAL_0;
1413 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1417 continue_status = DBG_CONTINUE;
1419 event_code = current_event.dwDebugEventCode;
1420 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1422 have_saved_context = 0;
1426 case CREATE_THREAD_DEBUG_EVENT:
1427 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1428 (unsigned) current_event.dwProcessId,
1429 (unsigned) current_event.dwThreadId,
1430 "CREATE_THREAD_DEBUG_EVENT"));
1431 if (saw_create != 1)
1433 struct inferior *inf;
1434 inf = find_inferior_pid (current_event.dwProcessId);
1435 if (!saw_create && inf->attach_flag)
1437 /* Kludge around a Windows bug where first event is a create
1438 thread event. Caused when attached process does not have
1440 retval = fake_create_process ();
1446 /* Record the existence of this thread */
1447 retval = current_event.dwThreadId;
1448 th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1449 current_event.dwThreadId),
1450 current_event.u.CreateThread.hThread);
1453 case EXIT_THREAD_DEBUG_EVENT:
1454 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1455 (unsigned) current_event.dwProcessId,
1456 (unsigned) current_event.dwThreadId,
1457 "EXIT_THREAD_DEBUG_EVENT"));
1459 if (current_event.dwThreadId != main_thread_id)
1461 windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
1462 current_event.dwThreadId));
1463 th = &dummy_thread_info;
1467 case CREATE_PROCESS_DEBUG_EVENT:
1468 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1469 (unsigned) current_event.dwProcessId,
1470 (unsigned) current_event.dwThreadId,
1471 "CREATE_PROCESS_DEBUG_EVENT"));
1472 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1473 if (++saw_create != 1)
1476 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1478 windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
1480 main_thread_id = current_event.dwThreadId;
1481 /* Add the main thread */
1482 th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1483 current_event.dwThreadId),
1484 current_event.u.CreateProcessInfo.hThread);
1485 retval = current_event.dwThreadId;
1488 case EXIT_PROCESS_DEBUG_EVENT:
1489 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1490 (unsigned) current_event.dwProcessId,
1491 (unsigned) current_event.dwThreadId,
1492 "EXIT_PROCESS_DEBUG_EVENT"));
1493 if (!windows_initialization_done)
1495 target_terminal_ours ();
1496 target_mourn_inferior ();
1497 error (_("During startup program exited with code 0x%x."),
1498 (unsigned int) current_event.u.ExitProcess.dwExitCode);
1500 else if (saw_create == 1)
1502 ourstatus->kind = TARGET_WAITKIND_EXITED;
1503 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1504 retval = main_thread_id;
1508 case LOAD_DLL_DEBUG_EVENT:
1509 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1510 (unsigned) current_event.dwProcessId,
1511 (unsigned) current_event.dwThreadId,
1512 "LOAD_DLL_DEBUG_EVENT"));
1513 CloseHandle (current_event.u.LoadDll.hFile);
1514 if (saw_create != 1)
1516 catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
1517 ourstatus->kind = TARGET_WAITKIND_LOADED;
1518 ourstatus->value.integer = 0;
1519 retval = main_thread_id;
1522 case UNLOAD_DLL_DEBUG_EVENT:
1523 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1524 (unsigned) current_event.dwProcessId,
1525 (unsigned) current_event.dwThreadId,
1526 "UNLOAD_DLL_DEBUG_EVENT"));
1527 if (saw_create != 1)
1529 catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
1530 ourstatus->kind = TARGET_WAITKIND_LOADED;
1531 ourstatus->value.integer = 0;
1532 retval = main_thread_id;
1535 case EXCEPTION_DEBUG_EVENT:
1536 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1537 (unsigned) current_event.dwProcessId,
1538 (unsigned) current_event.dwThreadId,
1539 "EXCEPTION_DEBUG_EVENT"));
1540 if (saw_create != 1)
1542 switch (handle_exception (ourstatus))
1545 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1548 retval = current_event.dwThreadId;
1552 continue_status = -1;
1557 case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
1558 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1559 (unsigned) current_event.dwProcessId,
1560 (unsigned) current_event.dwThreadId,
1561 "OUTPUT_DEBUG_STRING_EVENT"));
1562 if (saw_create != 1)
1564 retval = handle_output_debug_string (ourstatus);
1568 if (saw_create != 1)
1570 printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
1571 (DWORD) current_event.dwProcessId,
1572 (DWORD) current_event.dwThreadId);
1573 printf_unfiltered (" unknown event code %ld\n",
1574 current_event.dwDebugEventCode);
1578 if (!retval || saw_create != 1)
1580 if (continue_status == -1)
1581 windows_resume (ops, minus_one_ptid, 0, 1);
1583 CHECK (windows_continue (continue_status, -1));
1587 inferior_ptid = ptid_build (current_event.dwProcessId, 0,
1589 current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
1596 /* Wait for interesting events to occur in the target process. */
1598 windows_wait (struct target_ops *ops,
1599 ptid_t ptid, struct target_waitstatus *ourstatus, int options)
1603 target_terminal_ours ();
1605 /* We loop when we get a non-standard exception rather than return
1606 with a SPURIOUS because resume can try and step or modify things,
1607 which needs a current_thread->h. But some of these exceptions mark
1608 the birth or death of threads, which mean that the current thread
1609 isn't necessarily what you think it is. */
1615 /* If the user presses Ctrl-c while the debugger is waiting
1616 for an event, he expects the debugger to interrupt his program
1617 and to get the prompt back. There are two possible situations:
1619 - The debugger and the program do not share the console, in
1620 which case the Ctrl-c event only reached the debugger.
1621 In that case, the ctrl_c handler will take care of interrupting
1622 the inferior. Note that this case is working starting with
1623 Windows XP. For Windows 2000, Ctrl-C should be pressed in the
1626 - The debugger and the program share the same console, in which
1627 case both debugger and inferior will receive the Ctrl-c event.
1628 In that case the ctrl_c handler will ignore the event, as the
1629 Ctrl-c event generated inside the inferior will trigger the
1630 expected debug event.
1632 FIXME: brobecker/2008-05-20: If the inferior receives the
1633 signal first and the delay until GDB receives that signal
1634 is sufficiently long, GDB can sometimes receive the SIGINT
1635 after we have unblocked the CTRL+C handler. This would
1636 lead to the debugger stopping prematurely while handling
1637 the new-thread event that comes with the handling of the SIGINT
1638 inside the inferior, and then stop again immediately when
1639 the user tries to resume the execution in the inferior.
1640 This is a classic race that we should try to fix one day. */
1641 SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
1642 retval = get_windows_debug_event (ops, pid, ourstatus);
1643 SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
1646 return ptid_build (current_event.dwProcessId, 0, retval);
1651 if (deprecated_ui_loop_hook != NULL)
1652 detach = deprecated_ui_loop_hook (0);
1655 windows_kill_inferior (ops);
1661 do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
1663 extern int stop_after_trap;
1665 struct inferior *inf;
1666 struct thread_info *tp;
1668 last_sig = TARGET_SIGNAL_0;
1670 exception_count = 0;
1671 open_process_used = 0;
1672 debug_registers_changed = 0;
1673 debug_registers_used = 0;
1674 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1677 cygwin_load_start = cygwin_load_end = 0;
1679 current_event.dwProcessId = pid;
1680 memset (¤t_event, 0, sizeof (current_event));
1682 disable_breakpoints_in_shlibs ();
1683 windows_clear_solib ();
1684 clear_proceed_status ();
1685 init_wait_for_inferior ();
1687 inf = current_inferior ();
1688 inferior_appeared (inf, pid);
1689 inf->attach_flag = attaching;
1691 /* Make the new process the current inferior, so terminal handling
1692 can rely on it. When attaching, we don't know about any thread
1693 id here, but that's OK --- nothing should be referencing the
1694 current thread until we report an event out of windows_wait. */
1695 inferior_ptid = pid_to_ptid (pid);
1697 terminal_init_inferior_with_pgrp (pid);
1698 target_terminal_inferior ();
1700 windows_initialization_done = 0;
1701 inf->stop_soon = STOP_QUIETLY;
1704 stop_after_trap = 1;
1705 wait_for_inferior (0);
1706 tp = inferior_thread ();
1707 if (tp->stop_signal != TARGET_SIGNAL_TRAP)
1708 resume (0, tp->stop_signal);
1713 windows_initialization_done = 1;
1714 inf->stop_soon = NO_STOP_QUIETLY;
1715 stop_after_trap = 0;
1719 /* Try to set or remove a user privilege to the current process. Return -1
1720 if that fails, the previous setting of that privilege otherwise.
1722 This code is copied from the Cygwin source code and rearranged to allow
1723 dynamically loading of the needed symbols from advapi32 which is only
1724 available on NT/2K/XP. */
1726 set_process_privilege (const char *privilege, BOOL enable)
1728 HANDLE token_hdl = NULL;
1730 TOKEN_PRIVILEGES new_priv, orig_priv;
1734 if (!OpenProcessToken (GetCurrentProcess (),
1735 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1739 if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
1742 new_priv.PrivilegeCount = 1;
1743 new_priv.Privileges[0].Luid = restore_priv;
1744 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1746 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1747 sizeof orig_priv, &orig_priv, &size))
1750 /* Disabled, otherwise every `attach' in an unprivileged user session
1751 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1752 windows_attach(). */
1753 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1754 be enabled. GetLastError () returns an correct error code, though. */
1755 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1759 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1763 CloseHandle (token_hdl);
1768 /* Attach to process PID, then initialize for debugging it. */
1770 windows_attach (struct target_ops *ops, char *args, int from_tty)
1775 pid = parse_pid_to_attach (args);
1777 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1779 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1780 printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
1783 windows_init_thread_list ();
1784 ok = DebugActiveProcess (pid);
1790 /* Try fall back to Cygwin pid */
1791 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1794 ok = DebugActiveProcess (pid);
1799 error (_("Can't attach to process."));
1801 DebugSetProcessKillOnExit (FALSE);
1805 char *exec_file = (char *) get_exec_file (0);
1808 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1809 target_pid_to_str (pid_to_ptid (pid)));
1811 printf_unfiltered ("Attaching to %s\n",
1812 target_pid_to_str (pid_to_ptid (pid)));
1814 gdb_flush (gdb_stdout);
1817 do_initial_windows_stuff (ops, pid, 1);
1818 target_terminal_ours ();
1822 windows_detach (struct target_ops *ops, char *args, int from_tty)
1827 windows_resume (ops, ptid, 0, TARGET_SIGNAL_0);
1829 if (!DebugActiveProcessStop (current_event.dwProcessId))
1831 error (_("Can't detach process %lu (error %lu)"),
1832 current_event.dwProcessId, GetLastError ());
1835 DebugSetProcessKillOnExit (FALSE);
1837 if (detached && from_tty)
1839 char *exec_file = get_exec_file (0);
1842 printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
1843 current_event.dwProcessId);
1844 gdb_flush (gdb_stdout);
1847 inferior_ptid = null_ptid;
1848 detach_inferior (current_event.dwProcessId);
1850 unpush_target (ops);
1854 windows_pid_to_exec_file (int pid)
1856 static char path[__PMAX];
1858 /* Try to find exe name as symlink target of /proc/<pid>/exe */
1860 char procexe[sizeof ("/proc/4294967295/exe")];
1861 sprintf (procexe, "/proc/%u/exe", pid);
1862 nchars = readlink (procexe, path, sizeof(path));
1863 if (nchars > 0 && nchars < sizeof (path))
1865 path[nchars] = '\0'; /* Got it */
1870 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
1871 of gdb, or we're trying to debug a non-Cygwin windows executable. */
1872 if (!get_module_name (0, path))
1878 /* Print status information about what we're accessing. */
1881 windows_files_info (struct target_ops *ignore)
1883 struct inferior *inf = current_inferior ();
1885 printf_unfiltered ("\tUsing the running image of %s %s.\n",
1886 inf->attach_flag ? "attached" : "child",
1887 target_pid_to_str (inferior_ptid));
1891 windows_open (char *arg, int from_tty)
1893 error (_("Use the \"run\" command to start a Unix child process."));
1896 /* Start an inferior windows child process and sets inferior_ptid to its pid.
1897 EXEC_FILE is the file to run.
1898 ALLARGS is a string containing the arguments to the program.
1899 ENV is the environment vector to pass. Errors reported with error(). */
1902 windows_create_inferior (struct target_ops *ops, char *exec_file,
1903 char *allargs, char **in_env, int from_tty)
1907 cygwin_buf_t real_path[__PMAX];
1908 cygwin_buf_t shell[__PMAX]; /* Path to shell */
1910 cygwin_buf_t *toexec;
1911 cygwin_buf_t *cygallargs;
1915 int ostdin, ostdout, ostderr;
1917 char real_path[__PMAX];
1918 char shell[__PMAX]; /* Path to shell */
1923 PROCESS_INFORMATION pi;
1926 const char *inferior_io_terminal = get_inferior_io_terminal ();
1929 error (_("No executable specified, use `target exec'."));
1931 memset (&si, 0, sizeof (si));
1932 si.cb = sizeof (si);
1935 flags |= CREATE_NEW_PROCESS_GROUP;
1938 flags |= CREATE_NEW_CONSOLE;
1943 flags |= DEBUG_ONLY_THIS_PROCESS;
1944 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path,
1945 __PMAX * sizeof (cygwin_buf_t)) < 0)
1946 error (_("Error starting executable: %d"), errno);
1949 len = mbstowcs (NULL, allargs, 0) + 1;
1950 if (len == (size_t) -1)
1951 error (_("Error starting executable: %d"), errno);
1952 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
1953 mbstowcs (cygallargs, allargs, len);
1955 cygallargs = allargs;
1960 sh = getenv ("SHELL");
1963 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0)
1964 error (_("Error starting executable via shell: %d"), errno);
1966 len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0)
1967 + mbstowcs (NULL, allargs, 0) + 2;
1968 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
1969 swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs);
1971 cygallargs = (char *) alloca (sizeof (" -c 'exec '") + strlen (exec_file)
1972 + strlen (allargs) + 2);
1973 sprintf (cygallargs, " -c 'exec %s %s'", exec_file, allargs);
1976 flags |= DEBUG_PROCESS;
1980 args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2)
1981 * sizeof (wchar_t));
1982 wcscpy (args, toexec);
1983 wcscat (args, L" ");
1984 wcscat (args, cygallargs);
1986 args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2);
1987 strcpy (args, toexec);
1989 strcat (args, cygallargs);
1992 /* Prepare the environment vars for CreateProcess. */
1993 cygwin_internal (CW_SYNC_WINENV);
1995 if (!inferior_io_terminal)
1996 tty = ostdin = ostdout = ostderr = -1;
1999 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
2002 print_sys_errmsg (inferior_io_terminal, errno);
2003 ostdin = ostdout = ostderr = -1;
2016 windows_init_thread_list ();
2017 ret = CreateProcess (0,
2018 args, /* command line */
2019 NULL, /* Security */
2021 TRUE, /* inherit handles */
2022 flags, /* start flags */
2023 NULL, /* environment */
2024 NULL, /* current directory */
2039 args = alloca (strlen (toexec) + strlen (allargs) + 2);
2040 strcpy (args, toexec);
2042 strcat (args, allargs);
2044 flags |= DEBUG_ONLY_THIS_PROCESS;
2046 if (!inferior_io_terminal)
2047 tty = INVALID_HANDLE_VALUE;
2050 SECURITY_ATTRIBUTES sa;
2051 sa.nLength = sizeof(sa);
2052 sa.lpSecurityDescriptor = 0;
2053 sa.bInheritHandle = TRUE;
2054 tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
2055 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
2056 if (tty == INVALID_HANDLE_VALUE)
2057 warning (_("Warning: Failed to open TTY %s, error %#x."),
2058 inferior_io_terminal, (unsigned) GetLastError ());
2062 si.hStdOutput = tty;
2064 si.dwFlags |= STARTF_USESTDHANDLES;
2068 windows_init_thread_list ();
2069 ret = CreateProcessA (0,
2070 args, /* command line */
2071 NULL, /* Security */
2073 TRUE, /* inherit handles */
2074 flags, /* start flags */
2075 NULL, /* environment */
2076 NULL, /* current directory */
2079 if (tty != INVALID_HANDLE_VALUE)
2084 error (_("Error creating process %s, (error %d)."),
2085 exec_file, (unsigned) GetLastError ());
2087 CloseHandle (pi.hThread);
2088 CloseHandle (pi.hProcess);
2090 if (useshell && shell[0] != '\0')
2095 do_initial_windows_stuff (ops, pi.dwProcessId, 0);
2097 /* windows_continue (DBG_CONTINUE, -1); */
2101 windows_mourn_inferior (struct target_ops *ops)
2103 (void) windows_continue (DBG_CONTINUE, -1);
2104 i386_cleanup_dregs();
2105 if (open_process_used)
2107 CHECK (CloseHandle (current_process_handle));
2108 open_process_used = 0;
2110 unpush_target (ops);
2111 generic_mourn_inferior ();
2114 /* Send a SIGINT to the process group. This acts just like the user typed a
2115 ^C on the controlling terminal. */
2118 windows_stop (ptid_t ptid)
2120 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
2121 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
2122 registers_changed (); /* refresh register state */
2126 windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
2127 int write, struct mem_attrib *mem,
2128 struct target_ops *target)
2133 DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
2134 len, (DWORD) (uintptr_t) memaddr));
2135 if (!WriteProcessMemory (current_process_handle,
2136 (LPVOID) (uintptr_t) memaddr, our,
2139 FlushInstructionCache (current_process_handle,
2140 (LPCVOID) (uintptr_t) memaddr, len);
2144 DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
2145 len, (DWORD) (uintptr_t) memaddr));
2146 if (!ReadProcessMemory (current_process_handle,
2147 (LPCVOID) (uintptr_t) memaddr, our,
2155 windows_kill_inferior (struct target_ops *ops)
2157 CHECK (TerminateProcess (current_process_handle, 0));
2161 if (!windows_continue (DBG_CONTINUE, -1))
2163 if (!WaitForDebugEvent (¤t_event, INFINITE))
2165 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
2169 target_mourn_inferior (); /* or just windows_mourn_inferior? */
2173 windows_prepare_to_store (struct regcache *regcache)
2175 /* Do nothing, since we can store individual regs */
2179 windows_can_run (void)
2185 windows_close (int x)
2187 DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
2188 PIDGET (inferior_ptid)));
2191 /* Convert pid to printable format. */
2193 windows_pid_to_str (struct target_ops *ops, ptid_t ptid)
2195 static char buf[80];
2197 if (ptid_get_tid (ptid) != 0)
2199 snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
2200 ptid_get_pid (ptid), ptid_get_tid (ptid));
2204 return normal_pid_to_str (ptid);
2208 windows_xfer_shared_libraries (struct target_ops *ops,
2209 enum target_object object, const char *annex,
2210 gdb_byte *readbuf, const gdb_byte *writebuf,
2211 ULONGEST offset, LONGEST len)
2213 struct obstack obstack;
2221 obstack_init (&obstack);
2222 obstack_grow_str (&obstack, "<library-list>\n");
2223 for (so = solib_start.next; so; so = so->next)
2224 windows_xfer_shared_library (so->so_name, (CORE_ADDR) (uintptr_t) so->lm_info->load_addr,
2225 target_gdbarch, &obstack);
2226 obstack_grow_str0 (&obstack, "</library-list>\n");
2228 buf = obstack_finish (&obstack);
2229 len_avail = strlen (buf);
2230 if (offset >= len_avail)
2233 if (len > len_avail - offset)
2234 len = len_avail - offset;
2235 memcpy (readbuf, buf + offset, len);
2237 obstack_free (&obstack, NULL);
2242 windows_xfer_partial (struct target_ops *ops, enum target_object object,
2243 const char *annex, gdb_byte *readbuf,
2244 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
2248 case TARGET_OBJECT_MEMORY:
2250 return (*ops->deprecated_xfer_memory) (offset, readbuf,
2251 len, 0/*read*/, NULL, ops);
2253 return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
2254 len, 1/*write*/, NULL, ops);
2257 case TARGET_OBJECT_LIBRARIES:
2258 return windows_xfer_shared_libraries (ops, object, annex, readbuf,
2259 writebuf, offset, len);
2262 if (ops->beneath != NULL)
2263 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
2264 readbuf, writebuf, offset, len);
2270 windows_get_ada_task_ptid (long lwp, long thread)
2272 return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
2276 init_windows_ops (void)
2278 windows_ops.to_shortname = "child";
2279 windows_ops.to_longname = "Win32 child process";
2280 windows_ops.to_doc = "Win32 child process (started by the \"run\" command).";
2281 windows_ops.to_open = windows_open;
2282 windows_ops.to_close = windows_close;
2283 windows_ops.to_attach = windows_attach;
2284 windows_ops.to_attach_no_wait = 1;
2285 windows_ops.to_detach = windows_detach;
2286 windows_ops.to_resume = windows_resume;
2287 windows_ops.to_wait = windows_wait;
2288 windows_ops.to_fetch_registers = windows_fetch_inferior_registers;
2289 windows_ops.to_store_registers = windows_store_inferior_registers;
2290 windows_ops.to_prepare_to_store = windows_prepare_to_store;
2291 windows_ops.deprecated_xfer_memory = windows_xfer_memory;
2292 windows_ops.to_xfer_partial = windows_xfer_partial;
2293 windows_ops.to_files_info = windows_files_info;
2294 windows_ops.to_insert_breakpoint = memory_insert_breakpoint;
2295 windows_ops.to_remove_breakpoint = memory_remove_breakpoint;
2296 windows_ops.to_terminal_init = terminal_init_inferior;
2297 windows_ops.to_terminal_inferior = terminal_inferior;
2298 windows_ops.to_terminal_ours_for_output = terminal_ours_for_output;
2299 windows_ops.to_terminal_ours = terminal_ours;
2300 windows_ops.to_terminal_save_ours = terminal_save_ours;
2301 windows_ops.to_terminal_info = child_terminal_info;
2302 windows_ops.to_kill = windows_kill_inferior;
2303 windows_ops.to_create_inferior = windows_create_inferior;
2304 windows_ops.to_mourn_inferior = windows_mourn_inferior;
2305 windows_ops.to_can_run = windows_can_run;
2306 windows_ops.to_thread_alive = windows_thread_alive;
2307 windows_ops.to_pid_to_str = windows_pid_to_str;
2308 windows_ops.to_stop = windows_stop;
2309 windows_ops.to_stratum = process_stratum;
2310 windows_ops.to_has_all_memory = default_child_has_all_memory;
2311 windows_ops.to_has_memory = default_child_has_memory;
2312 windows_ops.to_has_stack = default_child_has_stack;
2313 windows_ops.to_has_registers = default_child_has_registers;
2314 windows_ops.to_has_execution = default_child_has_execution;
2315 windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file;
2316 windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid;
2318 i386_use_watchpoints (&windows_ops);
2320 i386_dr_low.set_control = cygwin_set_dr7;
2321 i386_dr_low.set_addr = cygwin_set_dr;
2322 i386_dr_low.reset_addr = NULL;
2323 i386_dr_low.get_status = cygwin_get_dr6;
2325 /* i386_dr_low.debug_register_length field is set by
2326 calling i386_set_debug_register_length function
2327 in processor windows specific native file. */
2329 windows_ops.to_magic = OPS_MAGIC;
2333 set_windows_aliases (char *argv0)
2335 add_info_alias ("dll", "sharedlibrary", 1);
2339 _initialize_windows_nat (void)
2341 struct cmd_list_element *c;
2343 init_windows_ops ();
2346 cygwin_internal (CW_SET_DOS_FILE_WARNING, 0);
2349 c = add_com ("dll-symbols", class_files, dll_symbol_command,
2350 _("Load dll library symbols from FILE."));
2351 set_cmd_completer (c, filename_completer);
2353 add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
2355 add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1);
2357 add_com_alias ("assf", "dll-symbols", class_alias, 1);
2360 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
2361 Set use of shell to start subprocess."), _("\
2362 Show use of shell to start subprocess."), NULL,
2364 NULL, /* FIXME: i18n: */
2365 &setlist, &showlist);
2367 add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\
2368 Break when an exception is detected in the Cygwin DLL itself."), _("\
2369 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
2371 NULL, /* FIXME: i18n: */
2372 &setlist, &showlist);
2375 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
2376 Set creation of new console when creating child process."), _("\
2377 Show creation of new console when creating child process."), NULL,
2379 NULL, /* FIXME: i18n: */
2380 &setlist, &showlist);
2382 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
2383 Set creation of new group when creating child process."), _("\
2384 Show creation of new group when creating child process."), NULL,
2386 NULL, /* FIXME: i18n: */
2387 &setlist, &showlist);
2389 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
2390 Set whether to display execution in child process."), _("\
2391 Show whether to display execution in child process."), NULL,
2393 NULL, /* FIXME: i18n: */
2394 &setlist, &showlist);
2396 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
2397 Set whether to display kernel events in child process."), _("\
2398 Show whether to display kernel events in child process."), NULL,
2400 NULL, /* FIXME: i18n: */
2401 &setlist, &showlist);
2403 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
2404 Set whether to display memory accesses in child process."), _("\
2405 Show whether to display memory accesses in child process."), NULL,
2407 NULL, /* FIXME: i18n: */
2408 &setlist, &showlist);
2410 add_setshow_boolean_cmd ("debugexceptions", class_support,
2411 &debug_exceptions, _("\
2412 Set whether to display kernel exceptions in child process."), _("\
2413 Show whether to display kernel exceptions in child process."), NULL,
2415 NULL, /* FIXME: i18n: */
2416 &setlist, &showlist);
2418 add_prefix_cmd ("w32", class_info, info_w32_command,
2419 _("Print information specific to Win32 debugging."),
2420 &info_w32_cmdlist, "info w32 ", 0, &infolist);
2422 add_cmd ("selector", class_info, display_selectors,
2423 _("Display selectors infos."),
2425 add_target (&windows_ops);
2426 deprecated_init_ui_hook = set_windows_aliases;
2429 /* Hardware watchpoint support, adapted from go32-nat.c code. */
2431 /* Pass the address ADDR to the inferior in the I'th debug register.
2432 Here we just store the address in dr array, the registers will be
2433 actually set up when windows_continue is called. */
2435 cygwin_set_dr (int i, CORE_ADDR addr)
2438 internal_error (__FILE__, __LINE__,
2439 _("Invalid register %d in cygwin_set_dr.\n"), i);
2441 debug_registers_changed = 1;
2442 debug_registers_used = 1;
2445 /* Pass the value VAL to the inferior in the DR7 debug control
2446 register. Here we just store the address in D_REGS, the watchpoint
2447 will be actually set up in windows_wait. */
2449 cygwin_set_dr7 (unsigned long val)
2451 dr[7] = (CORE_ADDR) val;
2452 debug_registers_changed = 1;
2453 debug_registers_used = 1;
2456 /* Get the value of the DR6 debug status register from the inferior.
2457 Here we just return the value stored in dr[6]
2458 by the last call to thread_rec for current_event.dwThreadId id. */
2459 static unsigned long
2460 cygwin_get_dr6 (void)
2462 return (unsigned long) dr[6];
2465 /* Determine if the thread referenced by "ptid" is alive
2466 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
2467 it means that the thread has died. Otherwise it is assumed to be alive. */
2469 windows_thread_alive (struct target_ops *ops, ptid_t ptid)
2473 gdb_assert (ptid_get_tid (ptid) != 0);
2474 tid = ptid_get_tid (ptid);
2476 return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
2481 _initialize_check_for_gdb_ini (void)
2484 if (inhibit_gdbinit)
2487 homedir = getenv ("HOME");
2491 char *oldini = (char *) alloca (strlen (homedir) +
2492 sizeof ("/gdb.ini"));
2493 strcpy (oldini, homedir);
2494 p = strchr (oldini, '\0');
2495 if (p > oldini && p[-1] != '/')
2497 strcpy (p, "gdb.ini");
2498 if (access (oldini, 0) == 0)
2500 int len = strlen (oldini);
2501 char *newini = alloca (len + 1);
2502 sprintf (newini, "%.*s.gdbinit",
2503 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
2504 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
2509 /* Define dummy functions which always return error for the rare cases where
2510 these functions could not be found. */
2512 bad_DebugActiveProcessStop (DWORD w)
2517 bad_DebugBreakProcess (HANDLE w)
2522 bad_DebugSetProcessKillOnExit (BOOL w)
2527 bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
2534 bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z)
2540 bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
2547 bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
2553 bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
2558 /* Load any functions which may not be available in ancient versions
2561 _initialize_loadable (void)
2565 hm = LoadLibrary ("kernel32.dll");
2568 DebugActiveProcessStop = (void *)
2569 GetProcAddress (hm, "DebugActiveProcessStop");
2570 DebugBreakProcess = (void *)
2571 GetProcAddress (hm, "DebugBreakProcess");
2572 DebugSetProcessKillOnExit = (void *)
2573 GetProcAddress (hm, "DebugSetProcessKillOnExit");
2576 /* Set variables to dummy versions of these processes if the function
2577 wasn't found in kernel32.dll. */
2578 if (!DebugBreakProcess)
2579 DebugBreakProcess = bad_DebugBreakProcess;
2580 if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit)
2582 DebugActiveProcessStop = bad_DebugActiveProcessStop;
2583 DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
2586 /* Load optional functions used for retrieving filename information
2587 associated with the currently debugged process or its dlls. */
2588 hm = LoadLibrary ("psapi.dll");
2591 EnumProcessModules = (void *)
2592 GetProcAddress (hm, "EnumProcessModules");
2593 GetModuleInformation = (void *)
2594 GetProcAddress (hm, "GetModuleInformation");
2595 GetModuleFileNameEx = (void *)
2596 GetProcAddress (hm, GetModuleFileNameEx_name);
2599 if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
2601 /* Set variables to dummy versions of these processes if the function
2602 wasn't found in psapi.dll. */
2603 EnumProcessModules = bad_EnumProcessModules;
2604 GetModuleInformation = bad_GetModuleInformation;
2605 GetModuleFileNameEx = bad_GetModuleFileNameEx;
2606 /* This will probably fail on Windows 9x/Me. Let the user know that we're
2607 missing some functionality. */
2608 warning(_("cannot automatically find executable file or library to read symbols.\nUse \"file\" or \"dll\" command to load executable/libraries directly."));
2611 hm = LoadLibrary ("advapi32.dll");
2614 OpenProcessToken = (void *) GetProcAddress (hm, "OpenProcessToken");
2615 LookupPrivilegeValueA = (void *)
2616 GetProcAddress (hm, "LookupPrivilegeValueA");
2617 AdjustTokenPrivileges = (void *)
2618 GetProcAddress (hm, "AdjustTokenPrivileges");
2619 /* Only need to set one of these since if OpenProcessToken fails nothing
2621 if (!OpenProcessToken || !LookupPrivilegeValueA || !AdjustTokenPrivileges)
2622 OpenProcessToken = bad_OpenProcessToken;