1 /* Target-vector operations for controlling windows child processes, for GDB.
3 Copyright (C) 1995-2012 Free Software Foundation, Inc.
5 Contributed by Cygnus Solutions, A Red Hat Company.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* Originally by Steve Chamberlain, sac@cygnus.com */
25 #include "frame.h" /* required by inferior.h */
28 #include "exceptions.h"
31 #include "completer.h"
35 #include <sys/types.h>
43 #include <sys/cygwin.h>
44 #include <cygwin/version.h>
49 #include "filenames.h"
52 #include "gdb_obstack.h"
53 #include "gdb_string.h"
54 #include "gdbthread.h"
56 #include <sys/param.h>
61 #include "xml-support.h"
63 #include "i386-tdep.h"
64 #include "i387-tdep.h"
66 #include "windows-tdep.h"
67 #include "windows-nat.h"
69 #include "complaints.h"
71 #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
72 #define DebugActiveProcessStop dyn_DebugActiveProcessStop
73 #define DebugBreakProcess dyn_DebugBreakProcess
74 #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
75 #define EnumProcessModules dyn_EnumProcessModules
76 #define GetModuleInformation dyn_GetModuleInformation
77 #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
78 #define OpenProcessToken dyn_OpenProcessToken
79 #define GetConsoleFontSize dyn_GetConsoleFontSize
80 #define GetCurrentConsoleFont dyn_GetCurrentConsoleFont
82 static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
83 DWORD, PTOKEN_PRIVILEGES, PDWORD);
84 static BOOL WINAPI (*DebugActiveProcessStop) (DWORD);
85 static BOOL WINAPI (*DebugBreakProcess) (HANDLE);
86 static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL);
87 static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD,
89 static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
91 static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID);
92 static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
93 static BOOL WINAPI (*GetCurrentConsoleFont) (HANDLE, BOOL,
95 static COORD WINAPI (*GetConsoleFontSize) (HANDLE, DWORD);
97 static struct target_ops windows_ops;
101 #undef GetModuleFileNameEx
104 # define __PMAX (MAX_PATH + 1)
105 static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD);
106 # define STARTUPINFO STARTUPINFOA
107 # define CreateProcess CreateProcessA
108 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
109 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
111 # define __PMAX PATH_MAX
112 /* The starting and ending address of the cygwin1.dll text segment. */
113 static CORE_ADDR cygwin_load_start;
114 static CORE_ADDR cygwin_load_end;
116 typedef wchar_t cygwin_buf_t;
117 static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE,
119 # define STARTUPINFO STARTUPINFOW
120 # define CreateProcess CreateProcessW
121 # define GetModuleFileNameEx_name "GetModuleFileNameExW"
122 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW
125 static int have_saved_context; /* True if we've saved context from a
127 static CONTEXT saved_context; /* Containes the saved context from a
130 /* If we're not using the old Cygwin header file set, define the
131 following which never should have been in the generic Win32 API
132 headers in the first place since they were our own invention... */
133 #ifndef _GNU_H_WINDOWS_H
136 FLAG_TRACE_BIT = 0x100,
137 CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
141 #ifndef CONTEXT_EXTENDED_REGISTERS
142 /* This macro is only defined on ia32. It only makes sense on this target,
143 so define it as zero if not already defined. */
144 #define CONTEXT_EXTENDED_REGISTERS 0
147 #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
148 | CONTEXT_EXTENDED_REGISTERS
150 static uintptr_t dr[8];
151 static int debug_registers_changed;
152 static int debug_registers_used;
154 static int windows_initialization_done;
155 #define DR6_CLEAR_VALUE 0xffff0ff0
157 /* The string sent by cygwin when it processes a signal.
158 FIXME: This should be in a cygwin include file. */
159 #ifndef _CYGWIN_SIGNAL_STRING
160 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
163 #define CHECK(x) check (x, __FILE__,__LINE__)
164 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
165 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
166 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
167 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
169 static void windows_stop (ptid_t);
170 static int windows_thread_alive (struct target_ops *, ptid_t);
171 static void windows_kill_inferior (struct target_ops *);
173 static void cygwin_set_dr (int i, CORE_ADDR addr);
174 static void cygwin_set_dr7 (unsigned long val);
175 static CORE_ADDR cygwin_get_dr (int i);
176 static unsigned long cygwin_get_dr6 (void);
177 static unsigned long cygwin_get_dr7 (void);
179 static enum target_signal last_sig = TARGET_SIGNAL_0;
180 /* Set if a signal was received from the debugged process. */
182 /* Thread information structure used to track information that is
183 not available in gdb's thread structure. */
184 typedef struct thread_info_struct
186 struct thread_info_struct *next;
189 CORE_ADDR thread_local_base;
198 static thread_info thread_head;
200 /* The process and thread handles for the above context. */
202 static DEBUG_EVENT current_event; /* The current debug event from
204 static HANDLE current_process_handle; /* Currently executing process */
205 static thread_info *current_thread; /* Info on currently selected thread */
206 static DWORD main_thread_id; /* Thread ID of the main thread */
208 /* Counts of things. */
209 static int exception_count = 0;
210 static int event_count = 0;
211 static int saw_create;
212 static int open_process_used = 0;
215 static int new_console = 0;
217 static int cygwin_exceptions = 0;
219 static int new_group = 1;
220 static int debug_exec = 0; /* show execution */
221 static int debug_events = 0; /* show events from kernel */
222 static int debug_memory = 0; /* show target memory accesses */
223 static int debug_exceptions = 0; /* show target exceptions */
224 static int useshell = 0; /* use shell for subprocesses */
226 /* This vector maps GDB's idea of a register's number into an offset
227 in the windows exception context vector.
229 It also contains the bit mask needed to load the register in question.
231 The contents of this table can only be computed by the units
232 that provide CPU-specific support for Windows native debugging.
233 These units should set the table by calling
234 windows_set_context_register_offsets.
236 One day we could read a reg, we could inspect the context we
237 already have loaded, if it doesn't have the bit set that we need,
238 we read that set of registers in using GetThreadContext. If the
239 context already contains what we need, we just unpack it. Then to
240 write a register, first we have to ensure that the context contains
241 the other regs of the group, and then we copy the info in and set
244 static const int *mappings;
246 /* This vector maps the target's idea of an exception (extracted
247 from the DEBUG_EVENT structure) to GDB's idea. */
249 struct xlate_exception
252 enum target_signal us;
255 static const struct xlate_exception
258 {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
259 {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
260 {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
261 {DBG_CONTROL_C, TARGET_SIGNAL_INT},
262 {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
263 {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
266 /* Set the MAPPINGS static global to OFFSETS.
267 See the description of MAPPINGS for more details. */
270 windows_set_context_register_offsets (const int *offsets)
276 check (BOOL ok, const char *file, int line)
279 printf_filtered ("error return %s:%d was %lu\n", file, line,
283 /* Find a thread record given a thread id. If GET_CONTEXT is not 0,
284 then also retrieve the context for this thread. If GET_CONTEXT is
285 negative, then don't suspend the thread. */
287 thread_rec (DWORD id, int get_context)
291 for (th = &thread_head; (th = th->next) != NULL;)
294 if (!th->suspended && get_context)
296 if (get_context > 0 && id != current_event.dwThreadId)
298 if (SuspendThread (th->h) == (DWORD) -1)
300 DWORD err = GetLastError ();
301 warning (_("SuspendThread failed. (winerr %d)"),
307 else if (get_context < 0)
309 th->reload_context = 1;
317 /* Add a thread to the thread list. */
319 windows_add_thread (ptid_t ptid, HANDLE h, void *tlb)
324 gdb_assert (ptid_get_tid (ptid) != 0);
326 id = ptid_get_tid (ptid);
328 if ((th = thread_rec (id, FALSE)))
331 th = XZALLOC (thread_info);
334 th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
335 th->next = thread_head.next;
336 thread_head.next = th;
338 /* Set the debug registers for the new thread if they are used. */
339 if (debug_registers_used)
341 /* Only change the value of the debug registers. */
342 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
343 CHECK (GetThreadContext (th->h, &th->context));
344 th->context.Dr0 = dr[0];
345 th->context.Dr1 = dr[1];
346 th->context.Dr2 = dr[2];
347 th->context.Dr3 = dr[3];
348 th->context.Dr6 = DR6_CLEAR_VALUE;
349 th->context.Dr7 = dr[7];
350 CHECK (SetThreadContext (th->h, &th->context));
351 th->context.ContextFlags = 0;
356 /* Clear out any old thread list and reintialize it to a
359 windows_init_thread_list (void)
361 thread_info *th = &thread_head;
363 DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
365 while (th->next != NULL)
367 thread_info *here = th->next;
368 th->next = here->next;
371 thread_head.next = NULL;
374 /* Delete a thread from the list of threads. */
376 windows_delete_thread (ptid_t ptid)
381 gdb_assert (ptid_get_tid (ptid) != 0);
383 id = ptid_get_tid (ptid);
386 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
387 delete_thread (ptid);
389 for (th = &thread_head;
390 th->next != NULL && th->next->id != id;
394 if (th->next != NULL)
396 thread_info *here = th->next;
397 th->next = here->next;
403 do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
405 char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
406 struct gdbarch *gdbarch = get_regcache_arch (regcache);
407 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
411 return; /* Windows sometimes uses a non-existent thread id in its
414 if (current_thread->reload_context)
416 #ifdef __COPY_CONTEXT_SIZE
417 if (have_saved_context)
419 /* Lie about where the program actually is stopped since
420 cygwin has informed us that we should consider the signal
421 to have occurred at another location which is stored in
423 memcpy (¤t_thread->context, &saved_context,
424 __COPY_CONTEXT_SIZE);
425 have_saved_context = 0;
430 thread_info *th = current_thread;
431 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
432 GetThreadContext (th->h, &th->context);
433 /* Copy dr values from that thread.
434 But only if there were not modified since last stop.
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 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
520 cygwin_buf_t pathbuf[__PMAX]; /* Temporary storage prior to converting to
521 posix form. __PMAX is always enough
522 as long as SO_NAME_MAX_PATH_SIZE is defined
527 /* Find size of buffer needed to handle list of modules loaded in
529 if (!EnumProcessModules (current_process_handle, DllHandle,
530 sizeof (HMODULE), &cbNeeded) || !cbNeeded)
533 /* Allocate correct amount of space for module list. */
534 DllHandle = (HMODULE *) alloca (cbNeeded);
538 /* Get the list of modules. */
539 if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
543 for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
545 /* Get information on this module. */
546 if (!GetModuleInformation (current_process_handle, DllHandle[i],
548 error (_("Can't get module info"));
550 if (!base_address || mi.lpBaseOfDll == base_address)
552 /* Try to find the name of the given module. */
554 /* Cygwin prefers that the path be in /x/y/z format. */
555 len = GetModuleFileNameEx (current_process_handle,
556 DllHandle[i], pathbuf, __PMAX);
558 error (_("Error getting dll name: %lu."), GetLastError ());
559 if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, dll_name_ret,
561 error (_("Error converting dll name to POSIX: %d."), errno);
563 len = GetModuleFileNameEx (current_process_handle,
564 DllHandle[i], dll_name_ret, __PMAX);
566 error (_("Error getting dll name: %u."),
567 (unsigned) GetLastError ());
569 return 1; /* success */
574 dll_name_ret[0] = '\0';
575 return 0; /* failure */
578 /* Encapsulate the information required in a call to
579 symbol_file_add_args. */
580 struct safe_symbol_file_add_args
584 struct section_addr_info *addrs;
587 struct ui_file *err, *out;
591 /* Maintain a linked list of "so" information. */
597 static struct so_list solib_start, *solib_end;
599 /* Call symbol_file_add with stderr redirected. We don't care if there
602 safe_symbol_file_add_stub (void *argv)
604 #define p ((struct safe_symbol_file_add_args *) argv)
605 const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0)
606 | (p->mainline ? SYMFILE_MAINLINE : 0));
607 p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags);
612 /* Restore gdb's stderr after calling symbol_file_add. */
614 safe_symbol_file_add_cleanup (void *p)
616 #define sp ((struct safe_symbol_file_add_args *)p)
617 gdb_flush (gdb_stderr);
618 gdb_flush (gdb_stdout);
619 ui_file_delete (gdb_stderr);
620 ui_file_delete (gdb_stdout);
621 gdb_stderr = sp->err;
622 gdb_stdout = sp->out;
626 /* symbol_file_add wrapper that prevents errors from being displayed. */
627 static struct objfile *
628 safe_symbol_file_add (char *name, int from_tty,
629 struct section_addr_info *addrs,
630 int mainline, int flags)
632 struct safe_symbol_file_add_args p;
633 struct cleanup *cleanup;
635 cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
639 gdb_flush (gdb_stderr);
640 gdb_flush (gdb_stdout);
641 gdb_stderr = ui_file_new ();
642 gdb_stdout = ui_file_new ();
644 p.from_tty = from_tty;
646 p.mainline = mainline;
648 catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
650 do_cleanups (cleanup);
654 static struct so_list *
655 windows_make_so (const char *name, LPVOID load_addr)
662 WIN32_FIND_DATA w32_fd;
663 HANDLE h = FindFirstFile(name, &w32_fd);
665 if (h == INVALID_HANDLE_VALUE)
671 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
673 p = strrchr (buf, '\\');
676 SetCurrentDirectory (buf);
677 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
678 SetCurrentDirectory (cwd);
681 if (strcasecmp (buf, "ntdll.dll") == 0)
683 GetSystemDirectory (buf, sizeof (buf));
684 strcat (buf, "\\ntdll.dll");
687 cygwin_buf_t buf[__PMAX];
690 if (access (name, F_OK) != 0)
692 if (strcasecmp (name, "ntdll.dll") == 0)
695 GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t));
696 wcscat (buf, L"\\ntdll.dll");
700 GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t));
701 strcat (buf, "\\ntdll.dll");
706 so = XZALLOC (struct so_list);
707 so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
708 so->lm_info->load_addr = load_addr;
709 strcpy (so->so_original_name, name);
711 strcpy (so->so_name, buf);
714 cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name,
715 SO_NAME_MAX_PATH_SIZE);
718 char *rname = realpath (name, NULL);
719 if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE)
721 strcpy (so->so_name, rname);
725 error (_("dll path too long"));
727 /* Record cygwin1.dll .text start/end. */
728 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
729 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
732 asection *text = NULL;
735 abfd = bfd_openr (so->so_name, "pei-i386");
740 if (bfd_check_format (abfd, bfd_object))
741 text = bfd_get_section_by_name (abfd, ".text");
749 /* The symbols in a dll are offset by 0x1000, which is the
750 offset from 0 of the first byte in an image - because of the
751 file header and the section alignment. */
752 cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *)
754 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
764 get_image_name (HANDLE h, void *address, int unicode)
767 static char buf[__PMAX];
769 static char buf[(2 * __PMAX) + 1];
771 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
777 /* Attempt to read the name of the dll that was detected.
778 This is documented to work only when actively debugging
779 a program. It will not work for attached processes. */
783 /* See if we could read the address of a string, and that the
784 address isn't null. */
785 if (!ReadProcessMemory (h, address, &address_ptr,
786 sizeof (address_ptr), &done)
787 || done != sizeof (address_ptr) || !address_ptr)
790 /* Find the length of the string. */
791 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
792 && (b[0] != 0 || b[size - 1] != 0) && done == size)
796 ReadProcessMemory (h, address_ptr, buf, len, &done);
799 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
800 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
803 wcstombs (buf, unicode_address, __PMAX);
805 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf,
813 /* Wait for child to do something. Return pid of child, or -1 in case
814 of error; store status through argument pointer OURSTATUS. */
816 handle_load_dll (void *dummy)
818 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
819 char dll_buf[__PMAX];
820 char *dll_name = NULL;
822 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
824 if (!get_module_name (event->lpBaseOfDll, dll_buf))
825 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
829 if (*dll_name == '\0')
830 dll_name = get_image_name (current_process_handle,
831 event->lpImageName, event->fUnicode);
835 solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
836 solib_end = solib_end->next;
838 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
839 host_address_to_string (solib_end->lm_info->load_addr)));
845 windows_free_so (struct so_list *so)
853 handle_unload_dll (void *dummy)
855 LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
858 for (so = &solib_start; so->next != NULL; so = so->next)
859 if (so->next->lm_info->load_addr == lpBaseOfDll)
861 struct so_list *sodel = so->next;
862 so->next = sodel->next;
865 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
867 windows_free_so (sodel);
868 solib_add (NULL, 0, NULL, auto_solib_add);
872 /* We did not find any DLL that was previously loaded at this address,
873 so register a complaint. We do not report an error, because we have
874 observed that this may be happening under some circumstances. For
875 instance, running 32bit applications on x64 Windows causes us to receive
876 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these
877 events are apparently caused by the WOW layer, the interface between
878 32bit and 64bit worlds). */
879 complaint (&symfile_complaints, _("dll starting at %s not found."),
880 host_address_to_string (lpBaseOfDll));
885 /* Clear list of loaded DLLs. */
887 windows_clear_solib (void)
889 solib_start.next = NULL;
890 solib_end = &solib_start;
893 /* Load DLL symbol info. */
895 dll_symbol_command (char *args, int from_tty)
901 error (_("dll-symbols requires a file name"));
904 if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
906 char *newargs = (char *) alloca (n + 4 + 1);
907 strcpy (newargs, args);
908 strcat (newargs, ".dll");
912 safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
915 /* Handle DEBUG_STRING output from child process.
916 Cygwin prepends its messages with a "cygwin:". Interpret this as
917 a Cygwin signal. Otherwise just print the string as a warning. */
919 handle_output_debug_string (struct target_waitstatus *ourstatus)
924 if (!target_read_string
925 ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
929 else if (strncmp (s, _CYGWIN_SIGNAL_STRING,
930 sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
933 if (strncmp (s, "cYg", 3) != 0)
937 #ifdef __COPY_CONTEXT_SIZE
940 /* Got a cygwin signal marker. A cygwin signal is followed by
941 the signal number itself and then optionally followed by the
942 thread id and address to saved context within the DLL. If
943 these are supplied, then the given thread is assumed to have
944 issued the signal and the context from the thread is assumed
945 to be stored at the given address in the inferior. Tell gdb
946 to treat this like a real signal. */
948 int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
949 int gotasig = target_signal_from_host (sig);
950 ourstatus->value.sig = gotasig;
955 ourstatus->kind = TARGET_WAITKIND_STOPPED;
956 retval = strtoul (p, &p, 0);
958 retval = main_thread_id;
959 else if ((x = (LPCVOID) strtoul (p, &p, 0))
960 && ReadProcessMemory (current_process_handle, x,
962 __COPY_CONTEXT_SIZE, &n)
963 && n == __COPY_CONTEXT_SIZE)
964 have_saved_context = 1;
965 current_event.dwThreadId = retval;
976 display_selector (HANDLE thread, DWORD sel)
979 if (GetThreadSelectorEntry (thread, sel, &info))
982 printf_filtered ("0x%03lx: ", sel);
983 if (!info.HighWord.Bits.Pres)
985 puts_filtered ("Segment not present\n");
988 base = (info.HighWord.Bits.BaseHi << 24) +
989 (info.HighWord.Bits.BaseMid << 16)
991 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
992 if (info.HighWord.Bits.Granularity)
993 limit = (limit << 12) | 0xfff;
994 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
995 if (info.HighWord.Bits.Default_Big)
996 puts_filtered(" 32-bit ");
998 puts_filtered(" 16-bit ");
999 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
1002 puts_filtered ("Data (Read-Only, Exp-up");
1005 puts_filtered ("Data (Read/Write, Exp-up");
1008 puts_filtered ("Unused segment (");
1011 puts_filtered ("Data (Read/Write, Exp-down");
1014 puts_filtered ("Code (Exec-Only, N.Conf");
1017 puts_filtered ("Code (Exec/Read, N.Conf");
1020 puts_filtered ("Code (Exec-Only, Conf");
1023 puts_filtered ("Code (Exec/Read, Conf");
1026 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
1028 if ((info.HighWord.Bits.Type & 0x1) == 0)
1029 puts_filtered(", N.Acc");
1030 puts_filtered (")\n");
1031 if ((info.HighWord.Bits.Type & 0x10) == 0)
1032 puts_filtered("System selector ");
1033 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
1034 if (info.HighWord.Bits.Granularity)
1035 puts_filtered ("Page granular.\n");
1037 puts_filtered ("Byte granular.\n");
1042 DWORD err = GetLastError ();
1043 if (err == ERROR_NOT_SUPPORTED)
1044 printf_filtered ("Function not supported\n");
1046 printf_filtered ("Invalid selector 0x%lx.\n",sel);
1052 display_selectors (char * args, int from_tty)
1054 if (!current_thread)
1056 puts_filtered ("Impossible to display selectors now.\n");
1062 puts_filtered ("Selector $cs\n");
1063 display_selector (current_thread->h,
1064 current_thread->context.SegCs);
1065 puts_filtered ("Selector $ds\n");
1066 display_selector (current_thread->h,
1067 current_thread->context.SegDs);
1068 puts_filtered ("Selector $es\n");
1069 display_selector (current_thread->h,
1070 current_thread->context.SegEs);
1071 puts_filtered ("Selector $ss\n");
1072 display_selector (current_thread->h,
1073 current_thread->context.SegSs);
1074 puts_filtered ("Selector $fs\n");
1075 display_selector (current_thread->h,
1076 current_thread->context.SegFs);
1077 puts_filtered ("Selector $gs\n");
1078 display_selector (current_thread->h,
1079 current_thread->context.SegGs);
1084 sel = parse_and_eval_long (args);
1085 printf_filtered ("Selector \"%s\"\n",args);
1086 display_selector (current_thread->h, sel);
1090 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
1091 printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
1092 host_address_to_string (\
1093 current_event.u.Exception.ExceptionRecord.ExceptionAddress))
1096 handle_exception (struct target_waitstatus *ourstatus)
1099 DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
1101 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1103 /* Record the context of the current thread. */
1104 th = thread_rec (current_event.dwThreadId, -1);
1108 case EXCEPTION_ACCESS_VIOLATION:
1109 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1110 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1113 /* See if the access violation happened within the cygwin DLL
1114 itself. Cygwin uses a kind of exception handling to deal
1115 with passed-in invalid addresses. gdb should not treat
1116 these as real SEGVs since they will be silently handled by
1117 cygwin. A real SEGV will (theoretically) be caught by
1118 cygwin later in the process and will be sent as a
1119 cygwin-specific-signal. So, ignore SEGVs if they show up
1120 within the text segment of the DLL itself. */
1122 CORE_ADDR addr = (CORE_ADDR) (uintptr_t)
1123 current_event.u.Exception.ExceptionRecord.ExceptionAddress;
1125 if ((!cygwin_exceptions && (addr >= cygwin_load_start
1126 && addr < cygwin_load_end))
1127 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1128 && strncmp (fn, "KERNEL32!IsBad",
1129 strlen ("KERNEL32!IsBad")) == 0))
1134 case STATUS_STACK_OVERFLOW:
1135 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1136 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1138 case STATUS_FLOAT_DENORMAL_OPERAND:
1139 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1140 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1142 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1143 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1144 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1146 case STATUS_FLOAT_INEXACT_RESULT:
1147 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1148 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1150 case STATUS_FLOAT_INVALID_OPERATION:
1151 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1152 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1154 case STATUS_FLOAT_OVERFLOW:
1155 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1156 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1158 case STATUS_FLOAT_STACK_CHECK:
1159 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1160 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1162 case STATUS_FLOAT_UNDERFLOW:
1163 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1164 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1166 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1167 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1168 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1170 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1171 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1172 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1174 case STATUS_INTEGER_OVERFLOW:
1175 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1176 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1178 case EXCEPTION_BREAKPOINT:
1179 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1180 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1183 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1184 ourstatus->value.sig = TARGET_SIGNAL_INT;
1186 case DBG_CONTROL_BREAK:
1187 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1188 ourstatus->value.sig = TARGET_SIGNAL_INT;
1190 case EXCEPTION_SINGLE_STEP:
1191 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1192 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1194 case EXCEPTION_ILLEGAL_INSTRUCTION:
1195 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1196 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1198 case EXCEPTION_PRIV_INSTRUCTION:
1199 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1200 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1202 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1203 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1204 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1207 /* Treat unhandled first chance exceptions specially. */
1208 if (current_event.u.Exception.dwFirstChance)
1210 printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n",
1211 current_event.u.Exception.ExceptionRecord.ExceptionCode,
1212 host_address_to_string (
1213 current_event.u.Exception.ExceptionRecord.ExceptionAddress));
1214 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
1218 last_sig = ourstatus->value.sig;
1222 /* Resume all artificially suspended threads if we are continuing
1225 windows_continue (DWORD continue_status, int id)
1231 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%lx, %s);\n",
1232 current_event.dwProcessId, current_event.dwThreadId,
1233 continue_status == DBG_CONTINUE ?
1234 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1236 for (th = &thread_head; (th = th->next) != NULL;)
1237 if ((id == -1 || id == (int) th->id)
1240 if (debug_registers_changed)
1242 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1243 th->context.Dr0 = dr[0];
1244 th->context.Dr1 = dr[1];
1245 th->context.Dr2 = dr[2];
1246 th->context.Dr3 = dr[3];
1247 th->context.Dr6 = DR6_CLEAR_VALUE;
1248 th->context.Dr7 = dr[7];
1250 if (th->context.ContextFlags)
1252 CHECK (SetThreadContext (th->h, &th->context));
1253 th->context.ContextFlags = 0;
1255 if (th->suspended > 0)
1256 (void) ResumeThread (th->h);
1260 res = ContinueDebugEvent (current_event.dwProcessId,
1261 current_event.dwThreadId,
1264 debug_registers_changed = 0;
1268 /* Called in pathological case where Windows fails to send a
1269 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1271 fake_create_process (void)
1273 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1274 current_event.dwProcessId);
1275 if (current_process_handle != NULL)
1276 open_process_used = 1;
1279 error (_("OpenProcess call failed, GetLastError = %lud"),
1281 /* We can not debug anything in that case. */
1283 main_thread_id = current_event.dwThreadId;
1284 current_thread = windows_add_thread (
1285 ptid_build (current_event.dwProcessId, 0,
1286 current_event.dwThreadId),
1287 current_event.u.CreateThread.hThread,
1288 current_event.u.CreateThread.lpThreadLocalBase);
1289 return main_thread_id;
1293 windows_resume (struct target_ops *ops,
1294 ptid_t ptid, int step, enum target_signal sig)
1297 DWORD continue_status = DBG_CONTINUE;
1299 /* A specific PTID means `step only this thread id'. */
1300 int resume_all = ptid_equal (ptid, minus_one_ptid);
1302 /* If we're continuing all threads, it's the current inferior that
1303 should be handled specially. */
1305 ptid = inferior_ptid;
1307 if (sig != TARGET_SIGNAL_0)
1309 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1311 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1313 else if (sig == last_sig)
1314 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1317 /* This code does not seem to work, because
1318 the kernel does probably not consider changes in the ExceptionRecord
1319 structure when passing the exception to the inferior.
1320 Note that this seems possible in the exception handler itself. */
1323 for (i = 0; xlate[i].them != -1; i++)
1324 if (xlate[i].us == sig)
1326 current_event.u.Exception.ExceptionRecord.ExceptionCode
1328 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1331 if (continue_status == DBG_CONTINUE)
1333 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1337 DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
1341 last_sig = TARGET_SIGNAL_0;
1343 DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
1344 ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
1346 /* Get context for currently selected thread. */
1347 th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
1352 /* Single step by setting t bit. */
1353 struct regcache *regcache = get_current_regcache ();
1354 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1355 windows_fetch_inferior_registers (ops, regcache,
1356 gdbarch_ps_regnum (gdbarch));
1357 th->context.EFlags |= FLAG_TRACE_BIT;
1360 if (th->context.ContextFlags)
1362 if (debug_registers_changed)
1364 th->context.Dr0 = dr[0];
1365 th->context.Dr1 = dr[1];
1366 th->context.Dr2 = dr[2];
1367 th->context.Dr3 = dr[3];
1368 th->context.Dr6 = DR6_CLEAR_VALUE;
1369 th->context.Dr7 = dr[7];
1371 CHECK (SetThreadContext (th->h, &th->context));
1372 th->context.ContextFlags = 0;
1376 /* Allow continuing with the same signal that interrupted us.
1377 Otherwise complain. */
1380 windows_continue (continue_status, -1);
1382 windows_continue (continue_status, ptid_get_tid (ptid));
1385 /* Ctrl-C handler used when the inferior is not run in the same console. The
1386 handler is in charge of interrupting the inferior using DebugBreakProcess.
1387 Note that this function is not available prior to Windows XP. In this case
1388 we emit a warning. */
1390 ctrl_c_handler (DWORD event_type)
1392 const int attach_flag = current_inferior ()->attach_flag;
1394 /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
1395 if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
1398 /* If the inferior and the debugger share the same console, do nothing as
1399 the inferior has also received the Ctrl-C event. */
1400 if (!new_console && !attach_flag)
1403 if (!DebugBreakProcess (current_process_handle))
1404 warning (_("Could not interrupt program. "
1405 "Press Ctrl-c in the program console."));
1407 /* Return true to tell that Ctrl-C has been handled. */
1411 /* Get the next event from the child. Return 1 if the event requires
1412 handling by WFI (or whatever). */
1414 get_windows_debug_event (struct target_ops *ops,
1415 int pid, struct target_waitstatus *ourstatus)
1418 DWORD continue_status, event_code;
1420 static thread_info dummy_thread_info;
1423 last_sig = TARGET_SIGNAL_0;
1425 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1429 continue_status = DBG_CONTINUE;
1431 event_code = current_event.dwDebugEventCode;
1432 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1434 have_saved_context = 0;
1438 case CREATE_THREAD_DEBUG_EVENT:
1439 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1440 (unsigned) current_event.dwProcessId,
1441 (unsigned) current_event.dwThreadId,
1442 "CREATE_THREAD_DEBUG_EVENT"));
1443 if (saw_create != 1)
1445 struct inferior *inf;
1446 inf = find_inferior_pid (current_event.dwProcessId);
1447 if (!saw_create && inf->attach_flag)
1449 /* Kludge around a Windows bug where first event is a create
1450 thread event. Caused when attached process does not have
1452 retval = fake_create_process ();
1458 /* Record the existence of this thread. */
1459 retval = current_event.dwThreadId;
1460 th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1461 current_event.dwThreadId),
1462 current_event.u.CreateThread.hThread,
1463 current_event.u.CreateThread.lpThreadLocalBase);
1467 case EXIT_THREAD_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 "EXIT_THREAD_DEBUG_EVENT"));
1473 if (current_event.dwThreadId != main_thread_id)
1475 windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
1476 current_event.dwThreadId));
1477 th = &dummy_thread_info;
1481 case CREATE_PROCESS_DEBUG_EVENT:
1482 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1483 (unsigned) current_event.dwProcessId,
1484 (unsigned) current_event.dwThreadId,
1485 "CREATE_PROCESS_DEBUG_EVENT"));
1486 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1487 if (++saw_create != 1)
1490 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1492 windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
1494 main_thread_id = current_event.dwThreadId;
1495 /* Add the main thread. */
1496 th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
1497 current_event.dwThreadId),
1498 current_event.u.CreateProcessInfo.hThread,
1499 current_event.u.CreateProcessInfo.lpThreadLocalBase);
1500 retval = current_event.dwThreadId;
1503 case EXIT_PROCESS_DEBUG_EVENT:
1504 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1505 (unsigned) current_event.dwProcessId,
1506 (unsigned) current_event.dwThreadId,
1507 "EXIT_PROCESS_DEBUG_EVENT"));
1508 if (!windows_initialization_done)
1510 target_terminal_ours ();
1511 target_mourn_inferior ();
1512 error (_("During startup program exited with code 0x%x."),
1513 (unsigned int) current_event.u.ExitProcess.dwExitCode);
1515 else if (saw_create == 1)
1517 ourstatus->kind = TARGET_WAITKIND_EXITED;
1518 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1519 retval = main_thread_id;
1523 case LOAD_DLL_DEBUG_EVENT:
1524 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1525 (unsigned) current_event.dwProcessId,
1526 (unsigned) current_event.dwThreadId,
1527 "LOAD_DLL_DEBUG_EVENT"));
1528 CloseHandle (current_event.u.LoadDll.hFile);
1529 if (saw_create != 1)
1531 catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
1532 ourstatus->kind = TARGET_WAITKIND_LOADED;
1533 ourstatus->value.integer = 0;
1534 retval = main_thread_id;
1537 case UNLOAD_DLL_DEBUG_EVENT:
1538 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1539 (unsigned) current_event.dwProcessId,
1540 (unsigned) current_event.dwThreadId,
1541 "UNLOAD_DLL_DEBUG_EVENT"));
1542 if (saw_create != 1)
1544 catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
1545 ourstatus->kind = TARGET_WAITKIND_LOADED;
1546 ourstatus->value.integer = 0;
1547 retval = main_thread_id;
1550 case EXCEPTION_DEBUG_EVENT:
1551 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1552 (unsigned) current_event.dwProcessId,
1553 (unsigned) current_event.dwThreadId,
1554 "EXCEPTION_DEBUG_EVENT"));
1555 if (saw_create != 1)
1557 switch (handle_exception (ourstatus))
1560 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1563 retval = current_event.dwThreadId;
1567 continue_status = -1;
1572 case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */
1573 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1574 (unsigned) current_event.dwProcessId,
1575 (unsigned) current_event.dwThreadId,
1576 "OUTPUT_DEBUG_STRING_EVENT"));
1577 if (saw_create != 1)
1579 retval = handle_output_debug_string (ourstatus);
1583 if (saw_create != 1)
1585 printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
1586 (DWORD) current_event.dwProcessId,
1587 (DWORD) current_event.dwThreadId);
1588 printf_unfiltered (" unknown event code %ld\n",
1589 current_event.dwDebugEventCode);
1593 if (!retval || saw_create != 1)
1595 if (continue_status == -1)
1596 windows_resume (ops, minus_one_ptid, 0, 1);
1598 CHECK (windows_continue (continue_status, -1));
1602 inferior_ptid = ptid_build (current_event.dwProcessId, 0,
1604 current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
1611 /* Wait for interesting events to occur in the target process. */
1613 windows_wait (struct target_ops *ops,
1614 ptid_t ptid, struct target_waitstatus *ourstatus, int options)
1618 target_terminal_ours ();
1620 /* We loop when we get a non-standard exception rather than return
1621 with a SPURIOUS because resume can try and step or modify things,
1622 which needs a current_thread->h. But some of these exceptions mark
1623 the birth or death of threads, which mean that the current thread
1624 isn't necessarily what you think it is. */
1630 /* If the user presses Ctrl-c while the debugger is waiting
1631 for an event, he expects the debugger to interrupt his program
1632 and to get the prompt back. There are two possible situations:
1634 - The debugger and the program do not share the console, in
1635 which case the Ctrl-c event only reached the debugger.
1636 In that case, the ctrl_c handler will take care of interrupting
1637 the inferior. Note that this case is working starting with
1638 Windows XP. For Windows 2000, Ctrl-C should be pressed in the
1641 - The debugger and the program share the same console, in which
1642 case both debugger and inferior will receive the Ctrl-c event.
1643 In that case the ctrl_c handler will ignore the event, as the
1644 Ctrl-c event generated inside the inferior will trigger the
1645 expected debug event.
1647 FIXME: brobecker/2008-05-20: If the inferior receives the
1648 signal first and the delay until GDB receives that signal
1649 is sufficiently long, GDB can sometimes receive the SIGINT
1650 after we have unblocked the CTRL+C handler. This would
1651 lead to the debugger stopping prematurely while handling
1652 the new-thread event that comes with the handling of the SIGINT
1653 inside the inferior, and then stop again immediately when
1654 the user tries to resume the execution in the inferior.
1655 This is a classic race that we should try to fix one day. */
1656 SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
1657 retval = get_windows_debug_event (ops, pid, ourstatus);
1658 SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
1661 return ptid_build (current_event.dwProcessId, 0, retval);
1666 if (deprecated_ui_loop_hook != NULL)
1667 detach = deprecated_ui_loop_hook (0);
1670 windows_kill_inferior (ops);
1676 do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
1678 extern int stop_after_trap;
1680 struct inferior *inf;
1681 struct thread_info *tp;
1683 last_sig = TARGET_SIGNAL_0;
1685 exception_count = 0;
1686 open_process_used = 0;
1687 debug_registers_changed = 0;
1688 debug_registers_used = 0;
1689 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1692 cygwin_load_start = cygwin_load_end = 0;
1694 current_event.dwProcessId = pid;
1695 memset (¤t_event, 0, sizeof (current_event));
1697 disable_breakpoints_in_shlibs ();
1698 windows_clear_solib ();
1699 clear_proceed_status ();
1700 init_wait_for_inferior ();
1702 inf = current_inferior ();
1703 inferior_appeared (inf, pid);
1704 inf->attach_flag = attaching;
1706 /* Make the new process the current inferior, so terminal handling
1707 can rely on it. When attaching, we don't know about any thread
1708 id here, but that's OK --- nothing should be referencing the
1709 current thread until we report an event out of windows_wait. */
1710 inferior_ptid = pid_to_ptid (pid);
1712 terminal_init_inferior_with_pgrp (pid);
1713 target_terminal_inferior ();
1715 windows_initialization_done = 0;
1716 inf->control.stop_soon = STOP_QUIETLY;
1719 stop_after_trap = 1;
1720 wait_for_inferior ();
1721 tp = inferior_thread ();
1722 if (tp->suspend.stop_signal != TARGET_SIGNAL_TRAP)
1723 resume (0, tp->suspend.stop_signal);
1728 windows_initialization_done = 1;
1729 inf->control.stop_soon = NO_STOP_QUIETLY;
1730 stop_after_trap = 0;
1734 /* Try to set or remove a user privilege to the current process. Return -1
1735 if that fails, the previous setting of that privilege otherwise.
1737 This code is copied from the Cygwin source code and rearranged to allow
1738 dynamically loading of the needed symbols from advapi32 which is only
1739 available on NT/2K/XP. */
1741 set_process_privilege (const char *privilege, BOOL enable)
1743 HANDLE token_hdl = NULL;
1745 TOKEN_PRIVILEGES new_priv, orig_priv;
1749 if (!OpenProcessToken (GetCurrentProcess (),
1750 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1754 if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
1757 new_priv.PrivilegeCount = 1;
1758 new_priv.Privileges[0].Luid = restore_priv;
1759 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1761 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1762 sizeof orig_priv, &orig_priv, &size))
1765 /* Disabled, otherwise every `attach' in an unprivileged user session
1766 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1767 windows_attach(). */
1768 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1769 be enabled. GetLastError () returns an correct error code, though. */
1770 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1774 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1778 CloseHandle (token_hdl);
1783 /* Attach to process PID, then initialize for debugging it. */
1785 windows_attach (struct target_ops *ops, char *args, int from_tty)
1790 pid = parse_pid_to_attach (args);
1792 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1794 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1795 printf_unfiltered ("This can cause attach to "
1796 "fail on Windows NT/2K/XP\n");
1799 windows_init_thread_list ();
1800 ok = DebugActiveProcess (pid);
1806 /* Try fall back to Cygwin pid. */
1807 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1810 ok = DebugActiveProcess (pid);
1815 error (_("Can't attach to process."));
1817 DebugSetProcessKillOnExit (FALSE);
1821 char *exec_file = (char *) get_exec_file (0);
1824 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1825 target_pid_to_str (pid_to_ptid (pid)));
1827 printf_unfiltered ("Attaching to %s\n",
1828 target_pid_to_str (pid_to_ptid (pid)));
1830 gdb_flush (gdb_stdout);
1833 do_initial_windows_stuff (ops, pid, 1);
1834 target_terminal_ours ();
1838 windows_detach (struct target_ops *ops, char *args, int from_tty)
1843 windows_resume (ops, ptid, 0, TARGET_SIGNAL_0);
1845 if (!DebugActiveProcessStop (current_event.dwProcessId))
1847 error (_("Can't detach process %lu (error %lu)"),
1848 current_event.dwProcessId, GetLastError ());
1851 DebugSetProcessKillOnExit (FALSE);
1853 if (detached && from_tty)
1855 char *exec_file = get_exec_file (0);
1858 printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
1859 current_event.dwProcessId);
1860 gdb_flush (gdb_stdout);
1863 inferior_ptid = null_ptid;
1864 detach_inferior (current_event.dwProcessId);
1866 unpush_target (ops);
1870 windows_pid_to_exec_file (int pid)
1872 static char path[__PMAX];
1874 /* Try to find exe name as symlink target of /proc/<pid>/exe. */
1876 char procexe[sizeof ("/proc/4294967295/exe")];
1877 sprintf (procexe, "/proc/%u/exe", pid);
1878 nchars = readlink (procexe, path, sizeof(path));
1879 if (nchars > 0 && nchars < sizeof (path))
1881 path[nchars] = '\0'; /* Got it */
1886 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
1887 of gdb, or we're trying to debug a non-Cygwin windows executable. */
1888 if (!get_module_name (0, path))
1894 /* Print status information about what we're accessing. */
1897 windows_files_info (struct target_ops *ignore)
1899 struct inferior *inf = current_inferior ();
1901 printf_unfiltered ("\tUsing the running image of %s %s.\n",
1902 inf->attach_flag ? "attached" : "child",
1903 target_pid_to_str (inferior_ptid));
1907 windows_open (char *arg, int from_tty)
1909 error (_("Use the \"run\" command to start a Unix child process."));
1912 /* Modify CreateProcess parameters for use of a new separate console.
1914 *FLAGS: DWORD parameter for general process creation flags.
1915 *SI: STARTUPINFO structure, for which the console window size and
1916 console buffer size is filled in if GDB is running in a console.
1917 to create the new console.
1918 The size of the used font is not available on all versions of
1919 Windows OS. Furthermore, the current font might not be the default
1920 font, but this is still better than before.
1921 If the windows and buffer sizes are computed,
1922 SI->DWFLAGS is changed so that this information is used
1923 by CreateProcess function. */
1926 windows_set_console_info (STARTUPINFO *si, DWORD *flags)
1928 HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE,
1929 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
1931 if (hconsole != INVALID_HANDLE_VALUE)
1933 CONSOLE_SCREEN_BUFFER_INFO sbinfo;
1935 CONSOLE_FONT_INFO cfi;
1937 GetCurrentConsoleFont (hconsole, FALSE, &cfi);
1938 font_size = GetConsoleFontSize (hconsole, cfi.nFont);
1939 GetConsoleScreenBufferInfo(hconsole, &sbinfo);
1940 si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1;
1941 si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1;
1943 si->dwXSize *= font_size.X;
1947 si->dwYSize *= font_size.Y;
1950 si->dwXCountChars = sbinfo.dwSize.X;
1951 si->dwYCountChars = sbinfo.dwSize.Y;
1952 si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS;
1954 *flags |= CREATE_NEW_CONSOLE;
1958 /* Function called by qsort to sort environment strings. */
1961 envvar_cmp (const void *a, const void *b)
1963 const char **p = (const char **) a;
1964 const char **q = (const char **) b;
1965 return strcasecmp (*p, *q);
1971 clear_win32_environment (char **env)
1975 wchar_t *copy = NULL, *equalpos;
1977 for (i = 0; env[i] && *env[i]; i++)
1979 len = mbstowcs (NULL, env[i], 0) + 1;
1980 copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t));
1981 mbstowcs (copy, env[i], len);
1982 equalpos = wcschr (copy, L'=');
1985 SetEnvironmentVariableW (copy, NULL);
1991 /* Start an inferior windows child process and sets inferior_ptid to its pid.
1992 EXEC_FILE is the file to run.
1993 ALLARGS is a string containing the arguments to the program.
1994 ENV is the environment vector to pass. Errors reported with error(). */
1997 windows_create_inferior (struct target_ops *ops, char *exec_file,
1998 char *allargs, char **in_env, int from_tty)
2002 cygwin_buf_t real_path[__PMAX];
2003 cygwin_buf_t shell[__PMAX]; /* Path to shell */
2005 cygwin_buf_t *toexec;
2006 cygwin_buf_t *cygallargs;
2008 char **old_env = NULL;
2012 int ostdin, ostdout, ostderr;
2014 char real_path[__PMAX];
2015 char shell[__PMAX]; /* Path to shell */
2026 PROCESS_INFORMATION pi;
2029 const char *inferior_io_terminal = get_inferior_io_terminal ();
2032 error (_("No executable specified, use `target exec'."));
2034 memset (&si, 0, sizeof (si));
2035 si.cb = sizeof (si);
2038 flags |= CREATE_NEW_PROCESS_GROUP;
2041 windows_set_console_info (&si, &flags);
2046 flags |= DEBUG_ONLY_THIS_PROCESS;
2047 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path,
2048 __PMAX * sizeof (cygwin_buf_t)) < 0)
2049 error (_("Error starting executable: %d"), errno);
2052 len = mbstowcs (NULL, allargs, 0) + 1;
2053 if (len == (size_t) -1)
2054 error (_("Error starting executable: %d"), errno);
2055 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
2056 mbstowcs (cygallargs, allargs, len);
2058 cygallargs = allargs;
2063 sh = getenv ("SHELL");
2066 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0)
2067 error (_("Error starting executable via shell: %d"), errno);
2069 len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0)
2070 + mbstowcs (NULL, allargs, 0) + 2;
2071 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
2072 swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs);
2074 cygallargs = (char *)
2075 alloca (sizeof (" -c 'exec '") + strlen (exec_file)
2076 + strlen (allargs) + 2);
2077 sprintf (cygallargs, " -c 'exec %s %s'", exec_file, allargs);
2080 flags |= DEBUG_PROCESS;
2084 args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2)
2085 * sizeof (wchar_t));
2086 wcscpy (args, toexec);
2087 wcscat (args, L" ");
2088 wcscat (args, cygallargs);
2090 args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2);
2091 strcpy (args, toexec);
2093 strcat (args, cygallargs);
2096 #ifdef CW_CVT_ENV_TO_WINENV
2097 /* First try to create a direct Win32 copy of the POSIX environment. */
2098 w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env);
2099 if (w32_env != (PWCHAR) -1)
2100 flags |= CREATE_UNICODE_ENVIRONMENT;
2102 /* If that fails, fall back to old method tweaking GDB's environment. */
2105 /* Reset all Win32 environment variables to avoid leftover on next run. */
2106 clear_win32_environment (environ);
2107 /* Prepare the environment vars for CreateProcess. */
2110 cygwin_internal (CW_SYNC_WINENV);
2114 if (!inferior_io_terminal)
2115 tty = ostdin = ostdout = ostderr = -1;
2118 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
2121 print_sys_errmsg (inferior_io_terminal, errno);
2122 ostdin = ostdout = ostderr = -1;
2135 windows_init_thread_list ();
2136 ret = CreateProcess (0,
2137 args, /* command line */
2138 NULL, /* Security */
2140 TRUE, /* inherit handles */
2141 flags, /* start flags */
2142 w32_env, /* environment */
2143 NULL, /* current directory */
2147 /* Just free the Win32 environment, if it could be created. */
2151 /* Reset all environment variables to avoid leftover on next run. */
2152 clear_win32_environment (in_env);
2153 /* Restore normal GDB environment variables. */
2155 cygwin_internal (CW_SYNC_WINENV);
2170 args = alloca (strlen (toexec) + strlen (allargs) + 2);
2171 strcpy (args, toexec);
2173 strcat (args, allargs);
2175 flags |= DEBUG_ONLY_THIS_PROCESS;
2177 if (!inferior_io_terminal)
2178 tty = INVALID_HANDLE_VALUE;
2181 SECURITY_ATTRIBUTES sa;
2182 sa.nLength = sizeof(sa);
2183 sa.lpSecurityDescriptor = 0;
2184 sa.bInheritHandle = TRUE;
2185 tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
2186 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
2187 if (tty == INVALID_HANDLE_VALUE)
2188 warning (_("Warning: Failed to open TTY %s, error %#x."),
2189 inferior_io_terminal, (unsigned) GetLastError ());
2193 si.hStdOutput = tty;
2195 si.dwFlags |= STARTF_USESTDHANDLES;
2199 /* CreateProcess takes the environment list as a null terminated set of
2200 strings (i.e. two nulls terminate the list). */
2202 /* Get total size for env strings. */
2203 for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++)
2204 envlen += strlen (in_env[i]) + 1;
2206 envsize = sizeof (in_env[0]) * (i + 1);
2207 env = (char **) alloca (envsize);
2208 memcpy (env, in_env, envsize);
2209 /* Windows programs expect the environment block to be sorted. */
2210 qsort (env, i, sizeof (char *), envvar_cmp);
2212 w32env = alloca (envlen + 1);
2214 /* Copy env strings into new buffer. */
2215 for (temp = w32env, i = 0; env[i] && *env[i]; i++)
2217 strcpy (temp, env[i]);
2218 temp += strlen (temp) + 1;
2221 /* Final nil string to terminate new env. */
2224 windows_init_thread_list ();
2225 ret = CreateProcessA (0,
2226 args, /* command line */
2227 NULL, /* Security */
2229 TRUE, /* inherit handles */
2230 flags, /* start flags */
2231 w32env, /* environment */
2232 NULL, /* current directory */
2235 if (tty != INVALID_HANDLE_VALUE)
2240 error (_("Error creating process %s, (error %d)."),
2241 exec_file, (unsigned) GetLastError ());
2243 CloseHandle (pi.hThread);
2244 CloseHandle (pi.hProcess);
2246 if (useshell && shell[0] != '\0')
2251 do_initial_windows_stuff (ops, pi.dwProcessId, 0);
2253 /* windows_continue (DBG_CONTINUE, -1); */
2257 windows_mourn_inferior (struct target_ops *ops)
2259 (void) windows_continue (DBG_CONTINUE, -1);
2260 i386_cleanup_dregs();
2261 if (open_process_used)
2263 CHECK (CloseHandle (current_process_handle));
2264 open_process_used = 0;
2266 unpush_target (ops);
2267 generic_mourn_inferior ();
2270 /* Send a SIGINT to the process group. This acts just like the user typed a
2271 ^C on the controlling terminal. */
2274 windows_stop (ptid_t ptid)
2276 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
2277 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
2278 registers_changed (); /* refresh register state */
2282 windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
2283 int write, struct mem_attrib *mem,
2284 struct target_ops *target)
2289 DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
2290 len, (DWORD) (uintptr_t) memaddr));
2291 if (!WriteProcessMemory (current_process_handle,
2292 (LPVOID) (uintptr_t) memaddr, our,
2295 FlushInstructionCache (current_process_handle,
2296 (LPCVOID) (uintptr_t) memaddr, len);
2300 DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
2301 len, (DWORD) (uintptr_t) memaddr));
2302 if (!ReadProcessMemory (current_process_handle,
2303 (LPCVOID) (uintptr_t) memaddr, our,
2311 windows_kill_inferior (struct target_ops *ops)
2313 CHECK (TerminateProcess (current_process_handle, 0));
2317 if (!windows_continue (DBG_CONTINUE, -1))
2319 if (!WaitForDebugEvent (¤t_event, INFINITE))
2321 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
2325 target_mourn_inferior (); /* Or just windows_mourn_inferior? */
2329 windows_prepare_to_store (struct regcache *regcache)
2331 /* Do nothing, since we can store individual regs. */
2335 windows_can_run (void)
2341 windows_close (int x)
2343 DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
2344 PIDGET (inferior_ptid)));
2347 /* Convert pid to printable format. */
2349 windows_pid_to_str (struct target_ops *ops, ptid_t ptid)
2351 static char buf[80];
2353 if (ptid_get_tid (ptid) != 0)
2355 snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
2356 ptid_get_pid (ptid), ptid_get_tid (ptid));
2360 return normal_pid_to_str (ptid);
2364 windows_xfer_shared_libraries (struct target_ops *ops,
2365 enum target_object object, const char *annex,
2366 gdb_byte *readbuf, const gdb_byte *writebuf,
2367 ULONGEST offset, LONGEST len)
2369 struct obstack obstack;
2377 obstack_init (&obstack);
2378 obstack_grow_str (&obstack, "<library-list>\n");
2379 for (so = solib_start.next; so; so = so->next)
2380 windows_xfer_shared_library (so->so_name, (CORE_ADDR)
2381 (uintptr_t) so->lm_info->load_addr,
2382 target_gdbarch, &obstack);
2383 obstack_grow_str0 (&obstack, "</library-list>\n");
2385 buf = obstack_finish (&obstack);
2386 len_avail = strlen (buf);
2387 if (offset >= len_avail)
2390 if (len > len_avail - offset)
2391 len = len_avail - offset;
2392 memcpy (readbuf, buf + offset, len);
2394 obstack_free (&obstack, NULL);
2399 windows_xfer_partial (struct target_ops *ops, enum target_object object,
2400 const char *annex, gdb_byte *readbuf,
2401 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
2405 case TARGET_OBJECT_MEMORY:
2407 return (*ops->deprecated_xfer_memory) (offset, readbuf,
2408 len, 0/*read*/, NULL, ops);
2410 return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
2411 len, 1/*write*/, NULL, ops);
2414 case TARGET_OBJECT_LIBRARIES:
2415 return windows_xfer_shared_libraries (ops, object, annex, readbuf,
2416 writebuf, offset, len);
2419 if (ops->beneath != NULL)
2420 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
2421 readbuf, writebuf, offset, len);
2426 /* Provide thread local base, i.e. Thread Information Block address.
2427 Returns 1 if ptid is found and sets *ADDR to thread_local_base. */
2430 windows_get_tib_address (ptid_t ptid, CORE_ADDR *addr)
2434 th = thread_rec (ptid_get_tid (ptid), 0);
2439 *addr = th->thread_local_base;
2445 windows_get_ada_task_ptid (long lwp, long thread)
2447 return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
2451 init_windows_ops (void)
2453 windows_ops.to_shortname = "child";
2454 windows_ops.to_longname = "Win32 child process";
2455 windows_ops.to_doc = "Win32 child process (started by the \"run\" command).";
2456 windows_ops.to_open = windows_open;
2457 windows_ops.to_close = windows_close;
2458 windows_ops.to_attach = windows_attach;
2459 windows_ops.to_attach_no_wait = 1;
2460 windows_ops.to_detach = windows_detach;
2461 windows_ops.to_resume = windows_resume;
2462 windows_ops.to_wait = windows_wait;
2463 windows_ops.to_fetch_registers = windows_fetch_inferior_registers;
2464 windows_ops.to_store_registers = windows_store_inferior_registers;
2465 windows_ops.to_prepare_to_store = windows_prepare_to_store;
2466 windows_ops.deprecated_xfer_memory = windows_xfer_memory;
2467 windows_ops.to_xfer_partial = windows_xfer_partial;
2468 windows_ops.to_files_info = windows_files_info;
2469 windows_ops.to_insert_breakpoint = memory_insert_breakpoint;
2470 windows_ops.to_remove_breakpoint = memory_remove_breakpoint;
2471 windows_ops.to_terminal_init = terminal_init_inferior;
2472 windows_ops.to_terminal_inferior = terminal_inferior;
2473 windows_ops.to_terminal_ours_for_output = terminal_ours_for_output;
2474 windows_ops.to_terminal_ours = terminal_ours;
2475 windows_ops.to_terminal_save_ours = terminal_save_ours;
2476 windows_ops.to_terminal_info = child_terminal_info;
2477 windows_ops.to_kill = windows_kill_inferior;
2478 windows_ops.to_create_inferior = windows_create_inferior;
2479 windows_ops.to_mourn_inferior = windows_mourn_inferior;
2480 windows_ops.to_can_run = windows_can_run;
2481 windows_ops.to_thread_alive = windows_thread_alive;
2482 windows_ops.to_pid_to_str = windows_pid_to_str;
2483 windows_ops.to_stop = windows_stop;
2484 windows_ops.to_stratum = process_stratum;
2485 windows_ops.to_has_all_memory = default_child_has_all_memory;
2486 windows_ops.to_has_memory = default_child_has_memory;
2487 windows_ops.to_has_stack = default_child_has_stack;
2488 windows_ops.to_has_registers = default_child_has_registers;
2489 windows_ops.to_has_execution = default_child_has_execution;
2490 windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file;
2491 windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid;
2492 windows_ops.to_get_tib_address = windows_get_tib_address;
2494 i386_use_watchpoints (&windows_ops);
2496 i386_dr_low.set_control = cygwin_set_dr7;
2497 i386_dr_low.set_addr = cygwin_set_dr;
2498 i386_dr_low.get_addr = cygwin_get_dr;
2499 i386_dr_low.get_status = cygwin_get_dr6;
2500 i386_dr_low.get_control = cygwin_get_dr7;
2502 /* i386_dr_low.debug_register_length field is set by
2503 calling i386_set_debug_register_length function
2504 in processor windows specific native file. */
2506 windows_ops.to_magic = OPS_MAGIC;
2510 set_windows_aliases (char *argv0)
2512 add_info_alias ("dll", "sharedlibrary", 1);
2516 _initialize_windows_nat (void)
2518 struct cmd_list_element *c;
2520 init_windows_ops ();
2523 cygwin_internal (CW_SET_DOS_FILE_WARNING, 0);
2526 c = add_com ("dll-symbols", class_files, dll_symbol_command,
2527 _("Load dll library symbols from FILE."));
2528 set_cmd_completer (c, filename_completer);
2530 add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
2532 add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1);
2534 add_com_alias ("assf", "dll-symbols", class_alias, 1);
2537 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
2538 Set use of shell to start subprocess."), _("\
2539 Show use of shell to start subprocess."), NULL,
2541 NULL, /* FIXME: i18n: */
2542 &setlist, &showlist);
2544 add_setshow_boolean_cmd ("cygwin-exceptions", class_support,
2545 &cygwin_exceptions, _("\
2546 Break when an exception is detected in the Cygwin DLL itself."), _("\
2547 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
2549 NULL, /* FIXME: i18n: */
2550 &setlist, &showlist);
2553 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
2554 Set creation of new console when creating child process."), _("\
2555 Show creation of new console when creating child process."), NULL,
2557 NULL, /* FIXME: i18n: */
2558 &setlist, &showlist);
2560 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
2561 Set creation of new group when creating child process."), _("\
2562 Show creation of new group when creating child process."), NULL,
2564 NULL, /* FIXME: i18n: */
2565 &setlist, &showlist);
2567 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
2568 Set whether to display execution in child process."), _("\
2569 Show whether to display execution in child process."), NULL,
2571 NULL, /* FIXME: i18n: */
2572 &setlist, &showlist);
2574 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
2575 Set whether to display kernel events in child process."), _("\
2576 Show whether to display kernel events in child process."), NULL,
2578 NULL, /* FIXME: i18n: */
2579 &setlist, &showlist);
2581 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
2582 Set whether to display memory accesses in child process."), _("\
2583 Show whether to display memory accesses in child process."), NULL,
2585 NULL, /* FIXME: i18n: */
2586 &setlist, &showlist);
2588 add_setshow_boolean_cmd ("debugexceptions", class_support,
2589 &debug_exceptions, _("\
2590 Set whether to display kernel exceptions in child process."), _("\
2591 Show whether to display kernel exceptions in child process."), NULL,
2593 NULL, /* FIXME: i18n: */
2594 &setlist, &showlist);
2596 init_w32_command_list ();
2598 add_cmd ("selector", class_info, display_selectors,
2599 _("Display selectors infos."),
2601 add_target (&windows_ops);
2602 deprecated_init_ui_hook = set_windows_aliases;
2605 /* Hardware watchpoint support, adapted from go32-nat.c code. */
2607 /* Pass the address ADDR to the inferior in the I'th debug register.
2608 Here we just store the address in dr array, the registers will be
2609 actually set up when windows_continue is called. */
2611 cygwin_set_dr (int i, CORE_ADDR addr)
2614 internal_error (__FILE__, __LINE__,
2615 _("Invalid register %d in cygwin_set_dr.\n"), i);
2617 debug_registers_changed = 1;
2618 debug_registers_used = 1;
2621 /* Pass the value VAL to the inferior in the DR7 debug control
2622 register. Here we just store the address in D_REGS, the watchpoint
2623 will be actually set up in windows_wait. */
2625 cygwin_set_dr7 (unsigned long val)
2627 dr[7] = (CORE_ADDR) val;
2628 debug_registers_changed = 1;
2629 debug_registers_used = 1;
2632 /* Get the value of debug register I from the inferior. */
2635 cygwin_get_dr (int i)
2640 /* Get the value of the DR6 debug status register from the inferior.
2641 Here we just return the value stored in dr[6]
2642 by the last call to thread_rec for current_event.dwThreadId id. */
2643 static unsigned long
2644 cygwin_get_dr6 (void)
2646 return (unsigned long) dr[6];
2649 /* Get the value of the DR7 debug status register from the inferior.
2650 Here we just return the value stored in dr[7] by the last call to
2651 thread_rec for current_event.dwThreadId id. */
2653 static unsigned long
2654 cygwin_get_dr7 (void)
2656 return (unsigned long) dr[7];
2659 /* Determine if the thread referenced by "ptid" is alive
2660 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
2661 it means that the thread has died. Otherwise it is assumed to be alive. */
2663 windows_thread_alive (struct target_ops *ops, ptid_t ptid)
2667 gdb_assert (ptid_get_tid (ptid) != 0);
2668 tid = ptid_get_tid (ptid);
2670 return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0
2675 _initialize_check_for_gdb_ini (void)
2678 if (inhibit_gdbinit)
2681 homedir = getenv ("HOME");
2685 char *oldini = (char *) alloca (strlen (homedir) +
2686 sizeof ("/gdb.ini"));
2687 strcpy (oldini, homedir);
2688 p = strchr (oldini, '\0');
2689 if (p > oldini && !IS_DIR_SEPARATOR (p[-1]))
2691 strcpy (p, "gdb.ini");
2692 if (access (oldini, 0) == 0)
2694 int len = strlen (oldini);
2695 char *newini = alloca (len + 1);
2696 sprintf (newini, "%.*s.gdbinit",
2697 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
2698 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
2703 /* Define dummy functions which always return error for the rare cases where
2704 these functions could not be found. */
2706 bad_DebugActiveProcessStop (DWORD w)
2711 bad_DebugBreakProcess (HANDLE w)
2716 bad_DebugSetProcessKillOnExit (BOOL w)
2721 bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
2728 bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z)
2734 bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
2741 bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
2747 bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
2753 bad_GetCurrentConsoleFont (HANDLE w, BOOL bMaxWindow, CONSOLE_FONT_INFO *f)
2759 bad_GetConsoleFontSize (HANDLE w, DWORD nFont)
2767 /* Load any functions which may not be available in ancient versions
2770 _initialize_loadable (void)
2774 hm = LoadLibrary ("kernel32.dll");
2777 DebugActiveProcessStop = (void *)
2778 GetProcAddress (hm, "DebugActiveProcessStop");
2779 DebugBreakProcess = (void *)
2780 GetProcAddress (hm, "DebugBreakProcess");
2781 DebugSetProcessKillOnExit = (void *)
2782 GetProcAddress (hm, "DebugSetProcessKillOnExit");
2783 GetConsoleFontSize = (void *)
2784 GetProcAddress (hm, "GetConsoleFontSize");
2785 GetCurrentConsoleFont = (void *)
2786 GetProcAddress (hm, "GetCurrentConsoleFont");
2789 /* Set variables to dummy versions of these processes if the function
2790 wasn't found in kernel32.dll. */
2791 if (!DebugBreakProcess)
2792 DebugBreakProcess = bad_DebugBreakProcess;
2793 if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit)
2795 DebugActiveProcessStop = bad_DebugActiveProcessStop;
2796 DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
2798 if (!GetConsoleFontSize)
2799 GetConsoleFontSize = bad_GetConsoleFontSize;
2800 if (!GetCurrentConsoleFont)
2801 GetCurrentConsoleFont = bad_GetCurrentConsoleFont;
2803 /* Load optional functions used for retrieving filename information
2804 associated with the currently debugged process or its dlls. */
2805 hm = LoadLibrary ("psapi.dll");
2808 EnumProcessModules = (void *)
2809 GetProcAddress (hm, "EnumProcessModules");
2810 GetModuleInformation = (void *)
2811 GetProcAddress (hm, "GetModuleInformation");
2812 GetModuleFileNameEx = (void *)
2813 GetProcAddress (hm, GetModuleFileNameEx_name);
2816 if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
2818 /* Set variables to dummy versions of these processes if the function
2819 wasn't found in psapi.dll. */
2820 EnumProcessModules = bad_EnumProcessModules;
2821 GetModuleInformation = bad_GetModuleInformation;
2822 GetModuleFileNameEx = bad_GetModuleFileNameEx;
2823 /* This will probably fail on Windows 9x/Me. Let the user know
2824 that we're missing some functionality. */
2826 cannot automatically find executable file or library to read symbols.\n\
2827 Use \"file\" or \"dll\" command to load executable/libraries directly."));
2830 hm = LoadLibrary ("advapi32.dll");
2833 OpenProcessToken = (void *) GetProcAddress (hm, "OpenProcessToken");
2834 LookupPrivilegeValueA = (void *)
2835 GetProcAddress (hm, "LookupPrivilegeValueA");
2836 AdjustTokenPrivileges = (void *)
2837 GetProcAddress (hm, "AdjustTokenPrivileges");
2838 /* Only need to set one of these since if OpenProcessToken fails nothing
2840 if (!OpenProcessToken || !LookupPrivilegeValueA
2841 || !AdjustTokenPrivileges)
2842 OpenProcessToken = bad_OpenProcessToken;