1 /* Target-vector operations for controlling win32 child processes, for GDB.
3 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007 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>
42 #include <sys/cygwin.h>
49 #include "gdb_obstack.h"
50 #include "gdb_string.h"
51 #include "gdbthread.h"
53 #include <sys/param.h>
58 #include "xml-support.h"
60 #include "i386-tdep.h"
61 #include "i387-tdep.h"
63 #include "i386-cygwin-tdep.h"
65 static struct target_ops win32_ops;
68 /* The starting and ending address of the cygwin1.dll text segment. */
69 static bfd_vma cygwin_load_start;
70 static bfd_vma cygwin_load_end;
73 static int have_saved_context; /* True if we've saved context from a cygwin signal. */
74 static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */
76 /* If we're not using the old Cygwin header file set, define the
77 following which never should have been in the generic Win32 API
78 headers in the first place since they were our own invention... */
79 #ifndef _GNU_H_WINDOWS_H
82 FLAG_TRACE_BIT = 0x100,
83 CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
88 #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
89 | CONTEXT_EXTENDED_REGISTERS
91 static unsigned dr[8];
92 static int debug_registers_changed;
93 static int debug_registers_used;
94 #define DR6_CLEAR_VALUE 0xffff0ff0
96 /* The string sent by cygwin when it processes a signal.
97 FIXME: This should be in a cygwin include file. */
98 #ifndef _CYGWIN_SIGNAL_STRING
99 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
102 #define CHECK(x) check (x, __FILE__,__LINE__)
103 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
104 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
105 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
106 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
108 static void win32_stop (void);
109 static int win32_win32_thread_alive (ptid_t);
110 static void win32_kill_inferior (void);
112 static enum target_signal last_sig = TARGET_SIGNAL_0;
113 /* Set if a signal was received from the debugged process */
115 /* Thread information structure used to track information that is
116 not available in gdb's thread structure. */
117 typedef struct thread_info_struct
119 struct thread_info_struct *next;
130 static thread_info thread_head;
132 /* The process and thread handles for the above context. */
134 static DEBUG_EVENT current_event; /* The current debug event from
136 static HANDLE current_process_handle; /* Currently executing process */
137 static thread_info *current_thread; /* Info on currently selected thread */
138 static DWORD main_thread_id; /* Thread ID of the main thread */
140 /* Counts of things. */
141 static int exception_count = 0;
142 static int event_count = 0;
143 static int saw_create;
144 static int open_process_used = 0;
147 static int new_console = 0;
149 static int cygwin_exceptions = 0;
151 static int new_group = 1;
152 static int debug_exec = 0; /* show execution */
153 static int debug_events = 0; /* show events from kernel */
154 static int debug_memory = 0; /* show target memory accesses */
155 static int debug_exceptions = 0; /* show target exceptions */
156 static int useshell = 0; /* use shell for subprocesses */
158 /* This vector maps GDB's idea of a register's number into an address
159 in the win32 exception context vector.
161 It also contains the bit mask needed to load the register in question.
163 One day we could read a reg, we could inspect the context we
164 already have loaded, if it doesn't have the bit set that we need,
165 we read that set of registers in using GetThreadContext. If the
166 context already contains what we need, we just unpack it. Then to
167 write a register, first we have to ensure that the context contains
168 the other regs of the group, and then we copy the info in and set
171 #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
172 static const int mappings[] =
174 context_offset (Eax),
175 context_offset (Ecx),
176 context_offset (Edx),
177 context_offset (Ebx),
178 context_offset (Esp),
179 context_offset (Ebp),
180 context_offset (Esi),
181 context_offset (Edi),
182 context_offset (Eip),
183 context_offset (EFlags),
184 context_offset (SegCs),
185 context_offset (SegSs),
186 context_offset (SegDs),
187 context_offset (SegEs),
188 context_offset (SegFs),
189 context_offset (SegGs),
190 context_offset (FloatSave.RegisterArea[0 * 10]),
191 context_offset (FloatSave.RegisterArea[1 * 10]),
192 context_offset (FloatSave.RegisterArea[2 * 10]),
193 context_offset (FloatSave.RegisterArea[3 * 10]),
194 context_offset (FloatSave.RegisterArea[4 * 10]),
195 context_offset (FloatSave.RegisterArea[5 * 10]),
196 context_offset (FloatSave.RegisterArea[6 * 10]),
197 context_offset (FloatSave.RegisterArea[7 * 10]),
198 context_offset (FloatSave.ControlWord),
199 context_offset (FloatSave.StatusWord),
200 context_offset (FloatSave.TagWord),
201 context_offset (FloatSave.ErrorSelector),
202 context_offset (FloatSave.ErrorOffset),
203 context_offset (FloatSave.DataSelector),
204 context_offset (FloatSave.DataOffset),
205 context_offset (FloatSave.ErrorSelector)
207 context_offset (ExtendedRegisters[10*16]),
208 context_offset (ExtendedRegisters[11*16]),
209 context_offset (ExtendedRegisters[12*16]),
210 context_offset (ExtendedRegisters[13*16]),
211 context_offset (ExtendedRegisters[14*16]),
212 context_offset (ExtendedRegisters[15*16]),
213 context_offset (ExtendedRegisters[16*16]),
214 context_offset (ExtendedRegisters[17*16]),
216 context_offset (ExtendedRegisters[24])
219 #undef context_offset
221 /* This vector maps the target's idea of an exception (extracted
222 from the DEBUG_EVENT structure) to GDB's idea. */
224 struct xlate_exception
227 enum target_signal us;
230 static const struct xlate_exception
233 {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
234 {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
235 {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
236 {DBG_CONTROL_C, TARGET_SIGNAL_INT},
237 {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
238 {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
242 check (BOOL ok, const char *file, int line)
245 printf_filtered ("error return %s:%d was %lu\n", file, line,
249 /* Find a thread record given a thread id. If GET_CONTEXT is not 0,
250 then also retrieve the context for this thread. If GET_CONTEXT is
251 negative, then don't suspend the thread. */
253 thread_rec (DWORD id, int get_context)
257 for (th = &thread_head; (th = th->next) != NULL;)
260 if (!th->suspended && get_context)
262 if (get_context > 0 && id != current_event.dwThreadId)
264 if (SuspendThread (th->h) == (DWORD) -1)
266 DWORD err = GetLastError ();
267 warning (_("SuspendThread failed. (winerr %d)"),
273 else if (get_context < 0)
275 th->reload_context = 1;
283 /* Add a thread to the thread list */
285 win32_add_thread (DWORD id, HANDLE h)
289 if ((th = thread_rec (id, FALSE)))
292 th = XZALLOC (thread_info);
295 th->next = thread_head.next;
296 thread_head.next = th;
297 add_thread (pid_to_ptid (id));
298 /* Set the debug registers for the new thread in they are used. */
299 if (debug_registers_used)
301 /* Only change the value of the debug registers. */
302 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
303 CHECK (GetThreadContext (th->h, &th->context));
304 th->context.Dr0 = dr[0];
305 th->context.Dr1 = dr[1];
306 th->context.Dr2 = dr[2];
307 th->context.Dr3 = dr[3];
308 th->context.Dr6 = DR6_CLEAR_VALUE;
309 th->context.Dr7 = dr[7];
310 CHECK (SetThreadContext (th->h, &th->context));
311 th->context.ContextFlags = 0;
316 /* Clear out any old thread list and reintialize it to a
319 win32_init_thread_list (void)
321 thread_info *th = &thread_head;
323 DEBUG_EVENTS (("gdb: win32_init_thread_list\n"));
325 while (th->next != NULL)
327 thread_info *here = th->next;
328 th->next = here->next;
331 thread_head.next = NULL;
334 /* Delete a thread from the list of threads */
336 win32_delete_thread (DWORD id)
341 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
342 delete_thread (pid_to_ptid (id));
344 for (th = &thread_head;
345 th->next != NULL && th->next->id != id;
349 if (th->next != NULL)
351 thread_info *here = th->next;
352 th->next = here->next;
358 do_win32_fetch_inferior_registers (struct regcache *regcache, int r)
360 char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
364 return; /* Windows sometimes uses a non-existent thread id in its
367 if (current_thread->reload_context)
369 #ifdef __COPY_CONTEXT_SIZE
370 if (have_saved_context)
372 /* Lie about where the program actually is stopped since cygwin has informed us that
373 we should consider the signal to have occurred at another location which is stored
374 in "saved_context. */
375 memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE);
376 have_saved_context = 0;
381 thread_info *th = current_thread;
382 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
383 GetThreadContext (th->h, &th->context);
384 /* Copy dr values from that thread. */
385 dr[0] = th->context.Dr0;
386 dr[1] = th->context.Dr1;
387 dr[2] = th->context.Dr2;
388 dr[3] = th->context.Dr3;
389 dr[6] = th->context.Dr6;
390 dr[7] = th->context.Dr7;
392 current_thread->reload_context = 0;
395 #define I387_ST0_REGNUM I386_ST0_REGNUM
397 if (r == I387_FISEG_REGNUM)
399 l = *((long *) context_offset) & 0xffff;
400 regcache_raw_supply (regcache, r, (char *) &l);
402 else if (r == I387_FOP_REGNUM)
404 l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
405 regcache_raw_supply (regcache, r, (char *) &l);
408 regcache_raw_supply (regcache, r, context_offset);
411 for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
412 do_win32_fetch_inferior_registers (regcache, r);
415 #undef I387_ST0_REGNUM
419 win32_fetch_inferior_registers (struct regcache *regcache, int r)
421 current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
422 /* Check if current_thread exists. Windows sometimes uses a non-existent
423 thread id in its events */
425 do_win32_fetch_inferior_registers (regcache, r);
429 do_win32_store_inferior_registers (const struct regcache *regcache, int r)
432 /* Windows sometimes uses a non-existent thread id in its events */;
434 regcache_raw_collect (regcache, r,
435 ((char *) ¤t_thread->context) + mappings[r]);
438 for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
439 do_win32_store_inferior_registers (regcache, r);
443 /* Store a new register value into the current thread context */
445 win32_store_inferior_registers (struct regcache *regcache, int r)
447 current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
448 /* Check if current_thread exists. Windows sometimes uses a non-existent
449 thread id in its events */
451 do_win32_store_inferior_registers (regcache, r);
454 static int psapi_loaded = 0;
455 static HMODULE psapi_module_handle = NULL;
456 static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
457 static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
458 static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
461 psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
467 HMODULE *DllHandle = dh_buf;
472 psapi_EnumProcessModules == NULL ||
473 psapi_GetModuleInformation == NULL ||
474 psapi_GetModuleFileNameExA == NULL)
479 psapi_module_handle = LoadLibrary ("psapi.dll");
480 if (!psapi_module_handle)
482 /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
485 psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
486 psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
487 psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
488 "GetModuleFileNameExA");
489 if (psapi_EnumProcessModules == NULL ||
490 psapi_GetModuleInformation == NULL ||
491 psapi_GetModuleFileNameExA == NULL)
496 ok = (*psapi_EnumProcessModules) (current_process_handle,
501 if (!ok || !cbNeeded)
504 DllHandle = (HMODULE *) alloca (cbNeeded);
508 ok = (*psapi_EnumProcessModules) (current_process_handle,
515 for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
517 if (!(*psapi_GetModuleInformation) (current_process_handle,
521 error (_("Can't get module info"));
523 len = (*psapi_GetModuleFileNameExA) (current_process_handle,
528 error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
530 if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
535 dll_name_ret[0] = '\0';
539 /* Encapsulate the information required in a call to
540 symbol_file_add_args */
541 struct safe_symbol_file_add_args
545 struct section_addr_info *addrs;
548 struct ui_file *err, *out;
552 /* Maintain a linked list of "so" information. */
558 static struct so_list solib_start, *solib_end;
560 /* Call symbol_file_add with stderr redirected. We don't care if there
563 safe_symbol_file_add_stub (void *argv)
565 #define p ((struct safe_symbol_file_add_args *) argv)
566 struct so_list *so = &solib_start;
568 p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
573 /* Restore gdb's stderr after calling symbol_file_add */
575 safe_symbol_file_add_cleanup (void *p)
577 #define sp ((struct safe_symbol_file_add_args *)p)
578 gdb_flush (gdb_stderr);
579 gdb_flush (gdb_stdout);
580 ui_file_delete (gdb_stderr);
581 ui_file_delete (gdb_stdout);
582 gdb_stderr = sp->err;
583 gdb_stdout = sp->out;
587 /* symbol_file_add wrapper that prevents errors from being displayed. */
588 static struct objfile *
589 safe_symbol_file_add (char *name, int from_tty,
590 struct section_addr_info *addrs,
591 int mainline, int flags)
593 struct safe_symbol_file_add_args p;
594 struct cleanup *cleanup;
596 cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
600 gdb_flush (gdb_stderr);
601 gdb_flush (gdb_stdout);
602 gdb_stderr = ui_file_new ();
603 gdb_stdout = ui_file_new ();
605 p.from_tty = from_tty;
607 p.mainline = mainline;
609 catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
611 do_cleanups (cleanup);
615 static struct so_list *
616 win32_make_so (const char *name, DWORD load_addr)
619 char buf[MAX_PATH + 1];
620 char cwd[MAX_PATH + 1];
622 WIN32_FIND_DATA w32_fd;
623 HANDLE h = FindFirstFile(name, &w32_fd);
624 MEMORY_BASIC_INFORMATION m;
626 if (h == INVALID_HANDLE_VALUE)
632 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
634 p = strrchr (buf, '\\');
637 SetCurrentDirectory (buf);
638 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
639 SetCurrentDirectory (cwd);
643 if (strcasecmp (buf, "ntdll.dll") == 0)
645 GetSystemDirectory (buf, sizeof (buf));
646 strcat (buf, "\\ntdll.dll");
648 so = XZALLOC (struct so_list);
649 so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
650 so->lm_info->load_addr = load_addr;
651 strcpy (so->so_original_name, name);
653 strcpy (so->so_name, buf);
655 cygwin_conv_to_posix_path (buf, so->so_name);
656 /* Record cygwin1.dll .text start/end. */
657 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
658 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
661 asection *text = NULL;
664 abfd = bfd_openr (name, "pei-i386");
669 if (bfd_check_format (abfd, bfd_object))
670 text = bfd_get_section_by_name (abfd, ".text");
678 /* The symbols in a dll are offset by 0x1000, which is the the
679 offset from 0 of the first byte in an image - because of the
680 file header and the section alignment. */
681 cygwin_load_start = load_addr + 0x1000;
682 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
692 get_image_name (HANDLE h, void *address, int unicode)
694 static char buf[(2 * MAX_PATH) + 1];
695 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
701 /* Attempt to read the name of the dll that was detected.
702 This is documented to work only when actively debugging
703 a program. It will not work for attached processes. */
707 /* See if we could read the address of a string, and that the
708 address isn't null. */
709 if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
710 || done != sizeof (address_ptr) || !address_ptr)
713 /* Find the length of the string */
714 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
715 && (b[0] != 0 || b[size - 1] != 0) && done == size)
719 ReadProcessMemory (h, address_ptr, buf, len, &done);
722 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
723 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
726 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
732 /* Wait for child to do something. Return pid of child, or -1 in case
733 of error; store status through argument pointer OURSTATUS. */
735 handle_load_dll (void *dummy)
737 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
738 char dll_buf[MAX_PATH + 1];
739 char *dll_name = NULL;
741 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
743 if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
744 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
748 if (*dll_name == '\0')
749 dll_name = get_image_name (current_process_handle,
750 event->lpImageName, event->fUnicode);
754 solib_end->next = win32_make_so (dll_name, (DWORD) event->lpBaseOfDll);
755 solib_end = solib_end->next;
761 win32_free_so (struct so_list *so)
769 handle_unload_dll (void *dummy)
771 DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll;
774 for (so = &solib_start; so->next != NULL; so = so->next)
775 if (so->next->lm_info->load_addr == lpBaseOfDll)
777 struct so_list *sodel = so->next;
778 so->next = sodel->next;
781 win32_free_so (sodel);
782 solib_add (NULL, 0, NULL, auto_solib_add);
786 error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
791 /* Clear list of loaded DLLs. */
793 win32_clear_solib (void)
795 solib_start.next = NULL;
796 solib_end = &solib_start;
799 /* Load DLL symbol info. */
801 dll_symbol_command (char *args, int from_tty)
807 error (_("dll-symbols requires a file name"));
810 if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
812 char *newargs = (char *) alloca (n + 4 + 1);
813 strcpy (newargs, args);
814 strcat (newargs, ".dll");
818 safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
821 /* Handle DEBUG_STRING output from child process.
822 Cygwin prepends its messages with a "cygwin:". Interpret this as
823 a Cygwin signal. Otherwise just print the string as a warning. */
825 handle_output_debug_string (struct target_waitstatus *ourstatus)
830 if (!target_read_string
831 ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
834 else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
837 if (strncmp (s, "cYg", 3) != 0)
841 #ifdef __COPY_CONTEXT_SIZE
844 /* Got a cygwin signal marker. A cygwin signal is followed by the signal number
845 itself and then optionally followed by the thread id and address to saved context
846 within the DLL. If these are supplied, then the given thread is assumed to have
847 issued the signal and the context from the thread is assumed to be stored at the
848 given address in the inferior. Tell gdb to treat this like a real signal. */
850 int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
851 int gotasig = target_signal_from_host (sig);
852 ourstatus->value.sig = gotasig;
857 ourstatus->kind = TARGET_WAITKIND_STOPPED;
858 retval = strtoul (p, &p, 0);
860 retval = main_thread_id;
861 else if ((x = (LPCVOID) strtoul (p, &p, 0))
862 && ReadProcessMemory (current_process_handle, x,
863 &saved_context, __COPY_CONTEXT_SIZE, &n)
864 && n == __COPY_CONTEXT_SIZE)
865 have_saved_context = 1;
866 current_event.dwThreadId = retval;
877 display_selector (HANDLE thread, DWORD sel)
880 if (GetThreadSelectorEntry (thread, sel, &info))
883 printf_filtered ("0x%03lx: ", sel);
884 if (!info.HighWord.Bits.Pres)
886 puts_filtered ("Segment not present\n");
889 base = (info.HighWord.Bits.BaseHi << 24) +
890 (info.HighWord.Bits.BaseMid << 16)
892 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
893 if (info.HighWord.Bits.Granularity)
894 limit = (limit << 12) | 0xfff;
895 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
896 if (info.HighWord.Bits.Default_Big)
897 puts_filtered(" 32-bit ");
899 puts_filtered(" 16-bit ");
900 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
903 puts_filtered ("Data (Read-Only, Exp-up");
906 puts_filtered ("Data (Read/Write, Exp-up");
909 puts_filtered ("Unused segment (");
912 puts_filtered ("Data (Read/Write, Exp-down");
915 puts_filtered ("Code (Exec-Only, N.Conf");
918 puts_filtered ("Code (Exec/Read, N.Conf");
921 puts_filtered ("Code (Exec-Only, Conf");
924 puts_filtered ("Code (Exec/Read, Conf");
927 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
929 if ((info.HighWord.Bits.Type & 0x1) == 0)
930 puts_filtered(", N.Acc");
931 puts_filtered (")\n");
932 if ((info.HighWord.Bits.Type & 0x10) == 0)
933 puts_filtered("System selector ");
934 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
935 if (info.HighWord.Bits.Granularity)
936 puts_filtered ("Page granular.\n");
938 puts_filtered ("Byte granular.\n");
943 printf_filtered ("Invalid selector 0x%lx.\n",sel);
949 display_selectors (char * args, int from_tty)
953 puts_filtered ("Impossible to display selectors now.\n");
959 puts_filtered ("Selector $cs\n");
960 display_selector (current_thread->h,
961 current_thread->context.SegCs);
962 puts_filtered ("Selector $ds\n");
963 display_selector (current_thread->h,
964 current_thread->context.SegDs);
965 puts_filtered ("Selector $es\n");
966 display_selector (current_thread->h,
967 current_thread->context.SegEs);
968 puts_filtered ("Selector $ss\n");
969 display_selector (current_thread->h,
970 current_thread->context.SegSs);
971 puts_filtered ("Selector $fs\n");
972 display_selector (current_thread->h,
973 current_thread->context.SegFs);
974 puts_filtered ("Selector $gs\n");
975 display_selector (current_thread->h,
976 current_thread->context.SegGs);
981 sel = parse_and_eval_long (args);
982 printf_filtered ("Selector \"%s\"\n",args);
983 display_selector (current_thread->h, sel);
987 static struct cmd_list_element *info_w32_cmdlist = NULL;
990 info_w32_command (char *args, int from_tty)
992 help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
996 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
997 printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
998 (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
1001 handle_exception (struct target_waitstatus *ourstatus)
1004 DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
1006 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1008 /* Record the context of the current thread */
1009 th = thread_rec (current_event.dwThreadId, -1);
1013 case EXCEPTION_ACCESS_VIOLATION:
1014 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1015 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1018 /* See if the access violation happened within the cygwin DLL itself. Cygwin uses
1019 a kind of exception handling to deal with passed-in invalid addresses. gdb
1020 should not treat these as real SEGVs since they will be silently handled by
1021 cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process
1022 and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up
1023 within the text segment of the DLL itself. */
1025 bfd_vma addr = (bfd_vma) current_event.u.Exception.ExceptionRecord.ExceptionAddress;
1026 if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end))
1027 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1028 && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0))
1033 case STATUS_STACK_OVERFLOW:
1034 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1035 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1037 case STATUS_FLOAT_DENORMAL_OPERAND:
1038 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1039 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1041 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1042 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1043 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1045 case STATUS_FLOAT_INEXACT_RESULT:
1046 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1047 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1049 case STATUS_FLOAT_INVALID_OPERATION:
1050 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1051 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1053 case STATUS_FLOAT_OVERFLOW:
1054 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1055 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1057 case STATUS_FLOAT_STACK_CHECK:
1058 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1059 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1061 case STATUS_FLOAT_UNDERFLOW:
1062 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1063 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1065 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1066 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1067 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1069 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1070 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1071 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1073 case STATUS_INTEGER_OVERFLOW:
1074 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1075 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1077 case EXCEPTION_BREAKPOINT:
1078 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1079 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1082 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1083 ourstatus->value.sig = TARGET_SIGNAL_INT;
1085 case DBG_CONTROL_BREAK:
1086 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1087 ourstatus->value.sig = TARGET_SIGNAL_INT;
1089 case EXCEPTION_SINGLE_STEP:
1090 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1091 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1093 case EXCEPTION_ILLEGAL_INSTRUCTION:
1094 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1095 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1097 case EXCEPTION_PRIV_INSTRUCTION:
1098 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1099 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1101 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1102 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1103 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1106 /* Treat unhandled first chance exceptions specially. */
1107 if (current_event.u.Exception.dwFirstChance)
1109 printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
1110 current_event.u.Exception.ExceptionRecord.ExceptionCode,
1111 (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
1112 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
1116 last_sig = ourstatus->value.sig;
1120 /* Resume all artificially suspended threads if we are continuing
1123 win32_continue (DWORD continue_status, int id)
1129 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
1130 current_event.dwProcessId, current_event.dwThreadId,
1131 continue_status == DBG_CONTINUE ?
1132 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1134 for (th = &thread_head; (th = th->next) != NULL;)
1135 if ((id == -1 || id == (int) th->id)
1138 if (debug_registers_changed)
1140 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1141 th->context.Dr0 = dr[0];
1142 th->context.Dr1 = dr[1];
1143 th->context.Dr2 = dr[2];
1144 th->context.Dr3 = dr[3];
1145 th->context.Dr6 = DR6_CLEAR_VALUE;
1146 th->context.Dr7 = dr[7];
1148 if (th->context.ContextFlags)
1150 CHECK (SetThreadContext (th->h, &th->context));
1151 th->context.ContextFlags = 0;
1153 if (th->suspended > 0)
1154 (void) ResumeThread (th->h);
1158 res = ContinueDebugEvent (current_event.dwProcessId,
1159 current_event.dwThreadId,
1162 debug_registers_changed = 0;
1166 /* Called in pathological case where Windows fails to send a
1167 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1169 fake_create_process (void)
1171 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1172 current_event.dwProcessId);
1173 if (current_process_handle != NULL)
1174 open_process_used = 1;
1177 error (_("OpenProcess call failed, GetLastError = %lud\n"),
1179 /* We can not debug anything in that case. */
1181 main_thread_id = current_event.dwThreadId;
1182 current_thread = win32_add_thread (main_thread_id,
1183 current_event.u.CreateThread.hThread);
1184 return main_thread_id;
1188 win32_resume (ptid_t ptid, int step, enum target_signal sig)
1191 DWORD continue_status = DBG_CONTINUE;
1193 int pid = PIDGET (ptid);
1195 if (sig != TARGET_SIGNAL_0)
1197 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1199 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1201 else if (sig == last_sig)
1202 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1205 /* This code does not seem to work, because
1206 the kernel does probably not consider changes in the ExceptionRecord
1207 structure when passing the exception to the inferior.
1208 Note that this seems possible in the exception handler itself. */
1211 for (i = 0; xlate[i].them != -1; i++)
1212 if (xlate[i].us == sig)
1214 current_event.u.Exception.ExceptionRecord.ExceptionCode =
1216 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1219 if (continue_status == DBG_CONTINUE)
1221 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1225 DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
1229 last_sig = TARGET_SIGNAL_0;
1231 DEBUG_EXEC (("gdb: win32_resume (pid=%d, step=%d, sig=%d);\n",
1234 /* Get context for currently selected thread */
1235 th = thread_rec (PIDGET (inferior_ptid), FALSE);
1240 /* Single step by setting t bit */
1241 win32_fetch_inferior_registers (get_current_regcache (),
1242 gdbarch_ps_regnum (current_gdbarch));
1243 th->context.EFlags |= FLAG_TRACE_BIT;
1246 if (th->context.ContextFlags)
1248 if (debug_registers_changed)
1250 th->context.Dr0 = dr[0];
1251 th->context.Dr1 = dr[1];
1252 th->context.Dr2 = dr[2];
1253 th->context.Dr3 = dr[3];
1254 th->context.Dr6 = DR6_CLEAR_VALUE;
1255 th->context.Dr7 = dr[7];
1257 CHECK (SetThreadContext (th->h, &th->context));
1258 th->context.ContextFlags = 0;
1262 /* Allow continuing with the same signal that interrupted us.
1263 Otherwise complain. */
1265 win32_continue (continue_status, pid);
1268 /* Get the next event from the child. Return 1 if the event requires
1269 handling by WFI (or whatever).
1272 get_win32_debug_event (int pid, struct target_waitstatus *ourstatus)
1275 DWORD continue_status, event_code;
1277 static thread_info dummy_thread_info;
1281 last_sig = TARGET_SIGNAL_0;
1283 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1287 continue_status = DBG_CONTINUE;
1289 event_code = current_event.dwDebugEventCode;
1290 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1292 have_saved_context = 0;
1296 case CREATE_THREAD_DEBUG_EVENT:
1297 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1298 (unsigned) current_event.dwProcessId,
1299 (unsigned) current_event.dwThreadId,
1300 "CREATE_THREAD_DEBUG_EVENT"));
1301 if (saw_create != 1)
1303 if (!saw_create && attach_flag)
1305 /* Kludge around a Windows bug where first event is a create
1306 thread event. Caused when attached process does not have
1308 retval = ourstatus->value.related_pid = fake_create_process ();
1314 /* Record the existence of this thread */
1315 th = win32_add_thread (current_event.dwThreadId,
1316 current_event.u.CreateThread.hThread);
1318 printf_unfiltered ("[New %s]\n",
1320 pid_to_ptid (current_event.dwThreadId)));
1321 retval = current_event.dwThreadId;
1324 case EXIT_THREAD_DEBUG_EVENT:
1325 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1326 (unsigned) current_event.dwProcessId,
1327 (unsigned) current_event.dwThreadId,
1328 "EXIT_THREAD_DEBUG_EVENT"));
1329 if (current_event.dwThreadId != main_thread_id)
1331 win32_delete_thread (current_event.dwThreadId);
1332 th = &dummy_thread_info;
1336 case CREATE_PROCESS_DEBUG_EVENT:
1337 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1338 (unsigned) current_event.dwProcessId,
1339 (unsigned) current_event.dwThreadId,
1340 "CREATE_PROCESS_DEBUG_EVENT"));
1341 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1342 if (++saw_create != 1)
1345 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1347 win32_delete_thread (main_thread_id);
1348 main_thread_id = current_event.dwThreadId;
1349 /* Add the main thread */
1350 th = win32_add_thread (main_thread_id,
1351 current_event.u.CreateProcessInfo.hThread);
1352 retval = ourstatus->value.related_pid = current_event.dwThreadId;
1355 case EXIT_PROCESS_DEBUG_EVENT:
1356 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1357 (unsigned) current_event.dwProcessId,
1358 (unsigned) current_event.dwThreadId,
1359 "EXIT_PROCESS_DEBUG_EVENT"));
1360 if (saw_create != 1)
1362 ourstatus->kind = TARGET_WAITKIND_EXITED;
1363 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1364 retval = main_thread_id;
1367 case LOAD_DLL_DEBUG_EVENT:
1368 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1369 (unsigned) current_event.dwProcessId,
1370 (unsigned) current_event.dwThreadId,
1371 "LOAD_DLL_DEBUG_EVENT"));
1372 CloseHandle (current_event.u.LoadDll.hFile);
1373 if (saw_create != 1)
1375 catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
1376 ourstatus->kind = TARGET_WAITKIND_LOADED;
1377 ourstatus->value.integer = 0;
1378 retval = main_thread_id;
1381 case UNLOAD_DLL_DEBUG_EVENT:
1382 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1383 (unsigned) current_event.dwProcessId,
1384 (unsigned) current_event.dwThreadId,
1385 "UNLOAD_DLL_DEBUG_EVENT"));
1386 if (saw_create != 1)
1388 catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
1389 ourstatus->kind = TARGET_WAITKIND_LOADED;
1390 ourstatus->value.integer = 0;
1391 retval = main_thread_id;
1394 case EXCEPTION_DEBUG_EVENT:
1395 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1396 (unsigned) current_event.dwProcessId,
1397 (unsigned) current_event.dwThreadId,
1398 "EXCEPTION_DEBUG_EVENT"));
1399 if (saw_create != 1)
1401 switch (handle_exception (ourstatus))
1404 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1407 retval = current_event.dwThreadId;
1411 continue_status = -1;
1416 case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
1417 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1418 (unsigned) current_event.dwProcessId,
1419 (unsigned) current_event.dwThreadId,
1420 "OUTPUT_DEBUG_STRING_EVENT"));
1421 if (saw_create != 1)
1423 retval = handle_output_debug_string (ourstatus);
1427 if (saw_create != 1)
1429 printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
1430 (DWORD) current_event.dwProcessId,
1431 (DWORD) current_event.dwThreadId);
1432 printf_unfiltered (" unknown event code %ld\n",
1433 current_event.dwDebugEventCode);
1437 if (!retval || saw_create != 1)
1439 if (continue_status == -1)
1440 win32_resume (ptid, 0, 1);
1442 CHECK (win32_continue (continue_status, -1));
1446 inferior_ptid = pid_to_ptid (retval);
1447 current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
1454 /* Wait for interesting events to occur in the target process. */
1456 win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
1458 int pid = PIDGET (ptid);
1460 target_terminal_ours ();
1462 /* We loop when we get a non-standard exception rather than return
1463 with a SPURIOUS because resume can try and step or modify things,
1464 which needs a current_thread->h. But some of these exceptions mark
1465 the birth or death of threads, which mean that the current thread
1466 isn't necessarily what you think it is. */
1470 int retval = get_win32_debug_event (pid, ourstatus);
1472 return pid_to_ptid (retval);
1477 if (deprecated_ui_loop_hook != NULL)
1478 detach = deprecated_ui_loop_hook (0);
1481 win32_kill_inferior ();
1487 do_initial_win32_stuff (DWORD pid)
1489 extern int stop_after_trap;
1492 last_sig = TARGET_SIGNAL_0;
1494 exception_count = 0;
1495 open_process_used = 0;
1496 debug_registers_changed = 0;
1497 debug_registers_used = 0;
1498 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1501 cygwin_load_start = cygwin_load_end = 0;
1503 current_event.dwProcessId = pid;
1504 memset (¤t_event, 0, sizeof (current_event));
1505 push_target (&win32_ops);
1506 disable_breakpoints_in_shlibs ();
1507 win32_clear_solib ();
1508 clear_proceed_status ();
1509 init_wait_for_inferior ();
1511 terminal_init_inferior_with_pgrp (pid);
1512 target_terminal_inferior ();
1516 stop_after_trap = 1;
1517 wait_for_inferior ();
1518 if (stop_signal != TARGET_SIGNAL_TRAP)
1519 resume (0, stop_signal);
1523 stop_after_trap = 0;
1527 /* Since Windows XP, detaching from a process is supported by Windows.
1528 The following code tries loading the appropriate functions dynamically.
1529 If loading these functions succeeds use them to actually detach from
1530 the inferior process, otherwise behave as usual, pretending that
1531 detach has worked. */
1532 static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
1533 static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
1536 has_detach_ability (void)
1538 static HMODULE kernel32 = NULL;
1541 kernel32 = LoadLibrary ("kernel32.dll");
1544 if (!DebugSetProcessKillOnExit)
1545 DebugSetProcessKillOnExit = GetProcAddress (kernel32,
1546 "DebugSetProcessKillOnExit");
1547 if (!DebugActiveProcessStop)
1548 DebugActiveProcessStop = GetProcAddress (kernel32,
1549 "DebugActiveProcessStop");
1550 if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
1556 /* Try to set or remove a user privilege to the current process. Return -1
1557 if that fails, the previous setting of that privilege otherwise.
1559 This code is copied from the Cygwin source code and rearranged to allow
1560 dynamically loading of the needed symbols from advapi32 which is only
1561 available on NT/2K/XP. */
1563 set_process_privilege (const char *privilege, BOOL enable)
1565 static HMODULE advapi32 = NULL;
1566 static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
1567 static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID);
1568 static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
1569 DWORD, PTOKEN_PRIVILEGES, PDWORD);
1571 HANDLE token_hdl = NULL;
1573 TOKEN_PRIVILEGES new_priv, orig_priv;
1577 if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */
1582 if (!(advapi32 = LoadLibrary ("advapi32.dll")))
1584 if (!OpenProcessToken)
1585 OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
1586 if (!LookupPrivilegeValue)
1587 LookupPrivilegeValue = GetProcAddress (advapi32,
1588 "LookupPrivilegeValueA");
1589 if (!AdjustTokenPrivileges)
1590 AdjustTokenPrivileges = GetProcAddress (advapi32,
1591 "AdjustTokenPrivileges");
1592 if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
1599 if (!OpenProcessToken (GetCurrentProcess (),
1600 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1604 if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
1607 new_priv.PrivilegeCount = 1;
1608 new_priv.Privileges[0].Luid = restore_priv;
1609 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1611 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1612 sizeof orig_priv, &orig_priv, &size))
1615 /* Disabled, otherwise every `attach' in an unprivileged user session
1616 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1618 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1619 be enabled. GetLastError () returns an correct error code, though. */
1620 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1624 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1628 CloseHandle (token_hdl);
1633 /* Attach to process PID, then initialize for debugging it. */
1635 win32_attach (char *args, int from_tty)
1641 error_no_arg (_("process-id to attach"));
1643 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1645 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1646 printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
1649 pid = strtoul (args, 0, 0); /* Windows pid */
1651 win32_init_thread_list ();
1652 ok = DebugActiveProcess (pid);
1658 /* Try fall back to Cygwin pid */
1659 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1662 ok = DebugActiveProcess (pid);
1667 error (_("Can't attach to process."));
1669 if (has_detach_ability ())
1670 DebugSetProcessKillOnExit (FALSE);
1676 char *exec_file = (char *) get_exec_file (0);
1679 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1680 target_pid_to_str (pid_to_ptid (pid)));
1682 printf_unfiltered ("Attaching to %s\n",
1683 target_pid_to_str (pid_to_ptid (pid)));
1685 gdb_flush (gdb_stdout);
1688 do_initial_win32_stuff (pid);
1689 target_terminal_ours ();
1693 win32_detach (char *args, int from_tty)
1697 if (has_detach_ability ())
1700 win32_resume (ptid, 0, TARGET_SIGNAL_0);
1702 if (!DebugActiveProcessStop (current_event.dwProcessId))
1704 error (_("Can't detach process %lu (error %lu)"),
1705 current_event.dwProcessId, GetLastError ());
1708 DebugSetProcessKillOnExit (FALSE);
1710 if (detached && from_tty)
1712 char *exec_file = get_exec_file (0);
1715 printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
1716 current_event.dwProcessId);
1717 gdb_flush (gdb_stdout);
1719 inferior_ptid = null_ptid;
1720 unpush_target (&win32_ops);
1724 win32_pid_to_exec_file (int pid)
1726 /* Try to find the process path using the Cygwin internal process list
1727 pid isn't a valid pid, unfortunately. Use current_event.dwProcessId
1730 static char path[MAX_PATH + 1];
1731 char *path_ptr = NULL;
1734 /* TODO: Also find native Windows processes using CW_GETPINFO_FULL. */
1736 struct external_pinfo *pinfo;
1738 cygwin_internal (CW_LOCK_PINFO, 1000);
1740 (pinfo = (struct external_pinfo *)
1741 cygwin_internal (CW_GETPINFO, cpid | CW_NEXTPID));
1744 if (pinfo->dwProcessId == current_event.dwProcessId) /* Got it */
1746 cygwin_conv_to_full_posix_path (pinfo->progname, path);
1751 cygwin_internal (CW_UNLOCK_PINFO);
1757 /* Print status information about what we're accessing. */
1760 win32_files_info (struct target_ops *ignore)
1762 printf_unfiltered ("\tUsing the running image of %s %s.\n",
1763 attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
1767 win32_open (char *arg, int from_tty)
1769 error (_("Use the \"run\" command to start a Unix child process."));
1772 /* Start an inferior win32 child process and sets inferior_ptid to its pid.
1773 EXEC_FILE is the file to run.
1774 ALLARGS is a string containing the arguments to the program.
1775 ENV is the environment vector to pass. Errors reported with error(). */
1778 win32_create_inferior (char *exec_file, char *allargs, char **in_env,
1782 PROCESS_INFORMATION pi;
1786 char real_path[MAXPATHLEN];
1788 char shell[MAX_PATH + 1]; /* Path to shell */
1791 int ostdin, ostdout, ostderr;
1792 const char *inferior_io_terminal = get_inferior_io_terminal ();
1795 error (_("No executable specified, use `target exec'."));
1797 memset (&si, 0, sizeof (si));
1798 si.cb = sizeof (si);
1803 flags = DEBUG_ONLY_THIS_PROCESS;
1804 cygwin_conv_to_win32_path (exec_file, real_path);
1810 sh = getenv ("SHELL");
1813 cygwin_conv_to_win32_path (sh, shell);
1814 newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
1815 + strlen (allargs) + 2);
1816 sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
1817 allargs = newallargs;
1819 flags = DEBUG_PROCESS;
1823 flags = DEBUG_ONLY_THIS_PROCESS;
1827 flags |= CREATE_NEW_PROCESS_GROUP;
1830 flags |= CREATE_NEW_CONSOLE;
1834 args = alloca (strlen (toexec) + strlen (allargs) + 2);
1835 strcpy (args, toexec);
1837 strcat (args, allargs);
1840 /* Prepare the environment vars for CreateProcess. */
1841 cygwin_internal (CW_SYNC_WINENV);
1843 if (!inferior_io_terminal)
1844 tty = ostdin = ostdout = ostderr = -1;
1847 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
1850 print_sys_errmsg (inferior_io_terminal, errno);
1851 ostdin = ostdout = ostderr = -1;
1865 win32_init_thread_list ();
1866 ret = CreateProcess (0,
1867 args, /* command line */
1868 NULL, /* Security */
1870 TRUE, /* inherit handles */
1871 flags, /* start flags */
1872 NULL, /* environment */
1873 NULL, /* current directory */
1891 error (_("Error creating process %s, (error %d)."),
1892 exec_file, (unsigned) GetLastError ());
1894 if (useshell && shell[0] != '\0')
1899 do_initial_win32_stuff (pi.dwProcessId);
1901 /* win32_continue (DBG_CONTINUE, -1); */
1905 win32_mourn_inferior (void)
1907 (void) win32_continue (DBG_CONTINUE, -1);
1908 i386_cleanup_dregs();
1909 if (open_process_used)
1911 CHECK (CloseHandle (current_process_handle));
1912 open_process_used = 0;
1914 unpush_target (&win32_ops);
1915 generic_mourn_inferior ();
1918 /* Send a SIGINT to the process group. This acts just like the user typed a
1919 ^C on the controlling terminal. */
1924 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
1925 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
1926 registers_changed (); /* refresh register state */
1930 win32_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
1931 int write, struct mem_attrib *mem,
1932 struct target_ops *target)
1937 DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
1938 len, (DWORD) memaddr));
1939 if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
1942 FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
1946 DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
1947 len, (DWORD) memaddr));
1948 if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
1956 win32_kill_inferior (void)
1958 CHECK (TerminateProcess (current_process_handle, 0));
1962 if (!win32_continue (DBG_CONTINUE, -1))
1964 if (!WaitForDebugEvent (¤t_event, INFINITE))
1966 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
1970 target_mourn_inferior (); /* or just win32_mourn_inferior? */
1974 win32_prepare_to_store (struct regcache *regcache)
1976 /* Do nothing, since we can store individual regs */
1980 win32_can_run (void)
1988 DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n",
1989 PIDGET (inferior_ptid)));
1992 /* Convert pid to printable format. */
1994 win32_pid_to_str (ptid_t ptid)
1996 static char buf[80];
1997 int pid = PIDGET (ptid);
1999 if ((DWORD) pid == current_event.dwProcessId)
2000 sprintf (buf, "process %d", pid);
2002 sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
2007 win32_xfer_shared_libraries (struct target_ops *ops,
2008 enum target_object object, const char *annex,
2009 gdb_byte *readbuf, const gdb_byte *writebuf,
2010 ULONGEST offset, LONGEST len)
2012 struct obstack obstack;
2020 obstack_init (&obstack);
2021 obstack_grow_str (&obstack, "<library-list>\n");
2022 for (so = solib_start.next; so; so = so->next)
2023 win32_xfer_shared_library (so->so_name, so->lm_info->load_addr, &obstack);
2024 obstack_grow_str0 (&obstack, "</library-list>\n");
2026 buf = obstack_finish (&obstack);
2027 len_avail = strlen (buf);
2028 if (offset >= len_avail)
2031 if (len > len_avail - offset)
2032 len = len_avail - offset;
2033 memcpy (readbuf, buf + offset, len);
2035 obstack_free (&obstack, NULL);
2040 win32_xfer_partial (struct target_ops *ops, enum target_object object,
2041 const char *annex, gdb_byte *readbuf,
2042 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
2046 case TARGET_OBJECT_MEMORY:
2048 return (*ops->deprecated_xfer_memory) (offset, readbuf,
2049 len, 0/*write*/, NULL, ops);
2051 return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
2052 len, 1/*write*/, NULL, ops);
2055 case TARGET_OBJECT_LIBRARIES:
2056 return win32_xfer_shared_libraries (ops, object, annex, readbuf,
2057 writebuf, offset, len);
2060 if (ops->beneath != NULL)
2061 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
2062 readbuf, writebuf, offset, len);
2068 init_win32_ops (void)
2070 win32_ops.to_shortname = "child";
2071 win32_ops.to_longname = "Win32 child process";
2072 win32_ops.to_doc = "Win32 child process (started by the \"run\" command).";
2073 win32_ops.to_open = win32_open;
2074 win32_ops.to_close = win32_close;
2075 win32_ops.to_attach = win32_attach;
2076 win32_ops.to_detach = win32_detach;
2077 win32_ops.to_resume = win32_resume;
2078 win32_ops.to_wait = win32_wait;
2079 win32_ops.to_fetch_registers = win32_fetch_inferior_registers;
2080 win32_ops.to_store_registers = win32_store_inferior_registers;
2081 win32_ops.to_prepare_to_store = win32_prepare_to_store;
2082 win32_ops.deprecated_xfer_memory = win32_xfer_memory;
2083 win32_ops.to_xfer_partial = win32_xfer_partial;
2084 win32_ops.to_files_info = win32_files_info;
2085 win32_ops.to_insert_breakpoint = memory_insert_breakpoint;
2086 win32_ops.to_remove_breakpoint = memory_remove_breakpoint;
2087 win32_ops.to_terminal_init = terminal_init_inferior;
2088 win32_ops.to_terminal_inferior = terminal_inferior;
2089 win32_ops.to_terminal_ours_for_output = terminal_ours_for_output;
2090 win32_ops.to_terminal_ours = terminal_ours;
2091 win32_ops.to_terminal_save_ours = terminal_save_ours;
2092 win32_ops.to_terminal_info = child_terminal_info;
2093 win32_ops.to_kill = win32_kill_inferior;
2094 win32_ops.to_create_inferior = win32_create_inferior;
2095 win32_ops.to_mourn_inferior = win32_mourn_inferior;
2096 win32_ops.to_can_run = win32_can_run;
2097 win32_ops.to_thread_alive = win32_win32_thread_alive;
2098 win32_ops.to_pid_to_str = win32_pid_to_str;
2099 win32_ops.to_stop = win32_stop;
2100 win32_ops.to_stratum = process_stratum;
2101 win32_ops.to_has_all_memory = 1;
2102 win32_ops.to_has_memory = 1;
2103 win32_ops.to_has_stack = 1;
2104 win32_ops.to_has_registers = 1;
2105 win32_ops.to_has_execution = 1;
2106 win32_ops.to_magic = OPS_MAGIC;
2107 win32_ops.to_pid_to_exec_file = win32_pid_to_exec_file;
2111 set_win32_aliases (char *argv0)
2113 add_info_alias ("dll", "sharedlibrary", 1);
2117 _initialize_win32_nat (void)
2119 struct cmd_list_element *c;
2123 c = add_com ("dll-symbols", class_files, dll_symbol_command,
2124 _("Load dll library symbols from FILE."));
2125 set_cmd_completer (c, filename_completer);
2127 add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
2130 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
2131 Set use of shell to start subprocess."), _("\
2132 Show use of shell to start subprocess."), NULL,
2134 NULL, /* FIXME: i18n: */
2135 &setlist, &showlist);
2137 add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\
2138 Break when an exception is detected in the Cygwin DLL itself."), _("\
2139 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
2141 NULL, /* FIXME: i18n: */
2142 &setlist, &showlist);
2145 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
2146 Set creation of new console when creating child process."), _("\
2147 Show creation of new console when creating child process."), NULL,
2149 NULL, /* FIXME: i18n: */
2150 &setlist, &showlist);
2152 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
2153 Set creation of new group when creating child process."), _("\
2154 Show creation of new group when creating child process."), NULL,
2156 NULL, /* FIXME: i18n: */
2157 &setlist, &showlist);
2159 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
2160 Set whether to display execution in child process."), _("\
2161 Show whether to display execution in child process."), NULL,
2163 NULL, /* FIXME: i18n: */
2164 &setlist, &showlist);
2166 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
2167 Set whether to display kernel events in child process."), _("\
2168 Show whether to display kernel events in child process."), NULL,
2170 NULL, /* FIXME: i18n: */
2171 &setlist, &showlist);
2173 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
2174 Set whether to display memory accesses in child process."), _("\
2175 Show whether to display memory accesses in child process."), NULL,
2177 NULL, /* FIXME: i18n: */
2178 &setlist, &showlist);
2180 add_setshow_boolean_cmd ("debugexceptions", class_support,
2181 &debug_exceptions, _("\
2182 Set whether to display kernel exceptions in child process."), _("\
2183 Show whether to display kernel exceptions in child process."), NULL,
2185 NULL, /* FIXME: i18n: */
2186 &setlist, &showlist);
2188 add_prefix_cmd ("w32", class_info, info_w32_command,
2189 _("Print information specific to Win32 debugging."),
2190 &info_w32_cmdlist, "info w32 ", 0, &infolist);
2192 add_cmd ("selector", class_info, display_selectors,
2193 _("Display selectors infos."),
2195 add_target (&win32_ops);
2196 deprecated_init_ui_hook = set_win32_aliases;
2199 /* Hardware watchpoint support, adapted from go32-nat.c code. */
2201 /* Pass the address ADDR to the inferior in the I'th debug register.
2202 Here we just store the address in dr array, the registers will be
2203 actually set up when win32_continue is called. */
2205 cygwin_set_dr (int i, CORE_ADDR addr)
2208 internal_error (__FILE__, __LINE__,
2209 _("Invalid register %d in cygwin_set_dr.\n"), i);
2210 dr[i] = (unsigned) addr;
2211 debug_registers_changed = 1;
2212 debug_registers_used = 1;
2215 /* Pass the value VAL to the inferior in the DR7 debug control
2216 register. Here we just store the address in D_REGS, the watchpoint
2217 will be actually set up in win32_wait. */
2219 cygwin_set_dr7 (unsigned val)
2222 debug_registers_changed = 1;
2223 debug_registers_used = 1;
2226 /* Get the value of the DR6 debug status register from the inferior.
2227 Here we just return the value stored in dr[6]
2228 by the last call to thread_rec for current_event.dwThreadId id. */
2230 cygwin_get_dr6 (void)
2235 /* Determine if the thread referenced by "pid" is alive
2236 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
2237 it means that the pid has died. Otherwise it is assumed to be alive. */
2239 win32_win32_thread_alive (ptid_t ptid)
2241 int pid = PIDGET (ptid);
2243 return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
2248 _initialize_check_for_gdb_ini (void)
2251 if (inhibit_gdbinit)
2254 homedir = getenv ("HOME");
2258 char *oldini = (char *) alloca (strlen (homedir) +
2259 sizeof ("/gdb.ini"));
2260 strcpy (oldini, homedir);
2261 p = strchr (oldini, '\0');
2262 if (p > oldini && p[-1] != '/')
2264 strcpy (p, "gdb.ini");
2265 if (access (oldini, 0) == 0)
2267 int len = strlen (oldini);
2268 char *newini = alloca (len + 1);
2269 sprintf (newini, "%.*s.gdbinit",
2270 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
2271 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);