1 /* Target-vector operations for controlling windows child processes, for GDB.
3 Copyright (C) 1995-2018 Free Software Foundation, Inc.
5 Contributed by Cygnus Solutions, A Red Hat Company.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* Originally by Steve Chamberlain, sac@cygnus.com */
25 #include "frame.h" /* required by inferior.h */
31 #include "completer.h"
35 #include <sys/types.h>
42 #include <sys/cygwin.h>
43 #include <cygwin/version.h>
47 #include "buildsym-legacy.h"
48 #include "filenames.h"
52 #include "gdb_obstack.h"
53 #include "gdbthread.h"
59 #include "xml-support.h"
62 #include "i386-tdep.h"
63 #include "i387-tdep.h"
65 #include "windows-tdep.h"
66 #include "windows-nat.h"
68 #include "complaints.h"
69 #include "inf-child.h"
70 #include "gdb_tilde_expand.h"
71 #include "common/pathstuff.h"
73 #define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
74 #define DebugActiveProcessStop dyn_DebugActiveProcessStop
75 #define DebugBreakProcess dyn_DebugBreakProcess
76 #define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
77 #define EnumProcessModules dyn_EnumProcessModules
78 #define GetModuleInformation dyn_GetModuleInformation
79 #define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
80 #define OpenProcessToken dyn_OpenProcessToken
81 #define GetConsoleFontSize dyn_GetConsoleFontSize
82 #define GetCurrentConsoleFont dyn_GetCurrentConsoleFont
84 typedef BOOL WINAPI (AdjustTokenPrivileges_ftype) (HANDLE, BOOL,
86 DWORD, PTOKEN_PRIVILEGES,
88 static AdjustTokenPrivileges_ftype *AdjustTokenPrivileges;
90 typedef BOOL WINAPI (DebugActiveProcessStop_ftype) (DWORD);
91 static DebugActiveProcessStop_ftype *DebugActiveProcessStop;
93 typedef BOOL WINAPI (DebugBreakProcess_ftype) (HANDLE);
94 static DebugBreakProcess_ftype *DebugBreakProcess;
96 typedef BOOL WINAPI (DebugSetProcessKillOnExit_ftype) (BOOL);
97 static DebugSetProcessKillOnExit_ftype *DebugSetProcessKillOnExit;
99 typedef BOOL WINAPI (EnumProcessModules_ftype) (HANDLE, HMODULE *, DWORD,
101 static EnumProcessModules_ftype *EnumProcessModules;
103 typedef BOOL WINAPI (GetModuleInformation_ftype) (HANDLE, HMODULE,
104 LPMODULEINFO, DWORD);
105 static GetModuleInformation_ftype *GetModuleInformation;
107 typedef BOOL WINAPI (LookupPrivilegeValueA_ftype) (LPCSTR, LPCSTR, PLUID);
108 static LookupPrivilegeValueA_ftype *LookupPrivilegeValueA;
110 typedef BOOL WINAPI (OpenProcessToken_ftype) (HANDLE, DWORD, PHANDLE);
111 static OpenProcessToken_ftype *OpenProcessToken;
113 typedef BOOL WINAPI (GetCurrentConsoleFont_ftype) (HANDLE, BOOL,
114 CONSOLE_FONT_INFO *);
115 static GetCurrentConsoleFont_ftype *GetCurrentConsoleFont;
117 typedef COORD WINAPI (GetConsoleFontSize_ftype) (HANDLE, DWORD);
118 static GetConsoleFontSize_ftype *GetConsoleFontSize;
122 #undef GetModuleFileNameEx
125 # define __PMAX (MAX_PATH + 1)
126 typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, LPSTR, DWORD);
127 static GetModuleFileNameEx_ftype *GetModuleFileNameEx;
128 # define STARTUPINFO STARTUPINFOA
129 # define CreateProcess CreateProcessA
130 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
131 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
133 # define __PMAX PATH_MAX
134 /* The starting and ending address of the cygwin1.dll text segment. */
135 static CORE_ADDR cygwin_load_start;
136 static CORE_ADDR cygwin_load_end;
138 typedef wchar_t cygwin_buf_t;
139 typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE,
141 static GetModuleFileNameEx_ftype *GetModuleFileNameEx;
142 # define STARTUPINFO STARTUPINFOW
143 # define CreateProcess CreateProcessW
144 # define GetModuleFileNameEx_name "GetModuleFileNameExW"
145 # define bad_GetModuleFileNameEx bad_GetModuleFileNameExW
148 static int have_saved_context; /* True if we've saved context from a
151 static CONTEXT saved_context; /* Containes the saved context from a
155 /* If we're not using the old Cygwin header file set, define the
156 following which never should have been in the generic Win32 API
157 headers in the first place since they were our own invention... */
158 #ifndef _GNU_H_WINDOWS_H
161 FLAG_TRACE_BIT = 0x100,
165 #ifndef CONTEXT_EXTENDED_REGISTERS
166 /* This macro is only defined on ia32. It only makes sense on this target,
167 so define it as zero if not already defined. */
168 #define CONTEXT_EXTENDED_REGISTERS 0
171 #define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \
172 | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \
173 | CONTEXT_EXTENDED_REGISTERS
175 static uintptr_t dr[8];
176 static int debug_registers_changed;
177 static int debug_registers_used;
179 static int windows_initialization_done;
180 #define DR6_CLEAR_VALUE 0xffff0ff0
182 /* The exception thrown by a program to tell the debugger the name of
183 a thread. The exception record contains an ID of a thread and a
184 name to give it. This exception has no documented name, but MSDN
185 dubs it "MS_VC_EXCEPTION" in one code example. */
186 #define MS_VC_EXCEPTION 0x406d1388
190 HANDLE_EXCEPTION_UNHANDLED = 0,
191 HANDLE_EXCEPTION_HANDLED,
192 HANDLE_EXCEPTION_IGNORED
193 } handle_exception_result;
195 /* The string sent by cygwin when it processes a signal.
196 FIXME: This should be in a cygwin include file. */
197 #ifndef _CYGWIN_SIGNAL_STRING
198 #define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
201 #define CHECK(x) check (x, __FILE__,__LINE__)
202 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
203 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
204 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
205 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
207 static void cygwin_set_dr (int i, CORE_ADDR addr);
208 static void cygwin_set_dr7 (unsigned long val);
209 static CORE_ADDR cygwin_get_dr (int i);
210 static unsigned long cygwin_get_dr6 (void);
211 static unsigned long cygwin_get_dr7 (void);
213 static enum gdb_signal last_sig = GDB_SIGNAL_0;
214 /* Set if a signal was received from the debugged process. */
216 /* Thread information structure used to track information that is
217 not available in gdb's thread structure. */
218 typedef struct windows_thread_info_struct
220 struct windows_thread_info_struct *next;
223 CORE_ADDR thread_local_base;
232 static windows_thread_info thread_head;
234 /* The process and thread handles for the above context. */
236 static DEBUG_EVENT current_event; /* The current debug event from
238 static HANDLE current_process_handle; /* Currently executing process */
239 static windows_thread_info *current_thread; /* Info on currently selected thread */
240 static DWORD main_thread_id; /* Thread ID of the main thread */
242 /* Counts of things. */
243 static int exception_count = 0;
244 static int event_count = 0;
245 static int saw_create;
246 static int open_process_used = 0;
249 static int new_console = 0;
251 static int cygwin_exceptions = 0;
253 static int new_group = 1;
254 static int debug_exec = 0; /* show execution */
255 static int debug_events = 0; /* show events from kernel */
256 static int debug_memory = 0; /* show target memory accesses */
257 static int debug_exceptions = 0; /* show target exceptions */
258 static int useshell = 0; /* use shell for subprocesses */
260 /* This vector maps GDB's idea of a register's number into an offset
261 in the windows exception context vector.
263 It also contains the bit mask needed to load the register in question.
265 The contents of this table can only be computed by the units
266 that provide CPU-specific support for Windows native debugging.
267 These units should set the table by calling
268 windows_set_context_register_offsets.
270 One day we could read a reg, we could inspect the context we
271 already have loaded, if it doesn't have the bit set that we need,
272 we read that set of registers in using GetThreadContext. If the
273 context already contains what we need, we just unpack it. Then to
274 write a register, first we have to ensure that the context contains
275 the other regs of the group, and then we copy the info in and set
278 static const int *mappings;
280 /* The function to use in order to determine whether a register is
281 a segment register or not. */
282 static segment_register_p_ftype *segment_register_p;
284 /* See windows_nat_target::resume to understand why this is commented
287 /* This vector maps the target's idea of an exception (extracted
288 from the DEBUG_EVENT structure) to GDB's idea. */
290 struct xlate_exception
296 static const struct xlate_exception xlate[] =
298 {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV},
299 {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV},
300 {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP},
301 {DBG_CONTROL_C, GDB_SIGNAL_INT},
302 {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP},
303 {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE}
308 struct windows_nat_target final : public x86_nat_target<inf_child_target>
310 void close () override;
312 void attach (const char *, int) override;
314 bool attach_no_wait () override
317 void detach (inferior *, int) override;
319 void resume (ptid_t, int , enum gdb_signal) override;
321 ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
323 void fetch_registers (struct regcache *, int) override;
324 void store_registers (struct regcache *, int) override;
326 enum target_xfer_status xfer_partial (enum target_object object,
329 const gdb_byte *writebuf,
330 ULONGEST offset, ULONGEST len,
331 ULONGEST *xfered_len) override;
333 void files_info () override;
335 void kill () override;
337 void create_inferior (const char *, const std::string &,
338 char **, int) override;
340 void mourn_inferior () override;
342 bool thread_alive (ptid_t ptid) override;
344 const char *pid_to_str (ptid_t) override;
346 void interrupt () override;
348 char *pid_to_exec_file (int pid) override;
350 ptid_t get_ada_task_ptid (long lwp, long thread) override;
352 bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override;
354 const char *thread_name (struct thread_info *) override;
357 static windows_nat_target the_windows_nat_target;
359 /* Set the MAPPINGS static global to OFFSETS.
360 See the description of MAPPINGS for more details. */
363 windows_set_context_register_offsets (const int *offsets)
368 /* See windows-nat.h. */
371 windows_set_segment_register_p (segment_register_p_ftype *fun)
373 segment_register_p = fun;
377 check (BOOL ok, const char *file, int line)
380 printf_filtered ("error return %s:%d was %u\n", file, line,
381 (unsigned) GetLastError ());
384 /* Find a thread record given a thread id. If GET_CONTEXT is not 0,
385 then also retrieve the context for this thread. If GET_CONTEXT is
386 negative, then don't suspend the thread. */
387 static windows_thread_info *
388 thread_rec (DWORD id, int get_context)
390 windows_thread_info *th;
392 for (th = &thread_head; (th = th->next) != NULL;)
395 if (!th->suspended && get_context)
397 if (get_context > 0 && id != current_event.dwThreadId)
399 if (SuspendThread (th->h) == (DWORD) -1)
401 DWORD err = GetLastError ();
403 /* We get Access Denied (5) when trying to suspend
404 threads that Windows started on behalf of the
405 debuggee, usually when those threads are just
407 We can get Invalid Handle (6) if the main thread
409 if (err != ERROR_INVALID_HANDLE
410 && err != ERROR_ACCESS_DENIED)
411 warning (_("SuspendThread (tid=0x%x) failed."
413 (unsigned) id, (unsigned) err);
419 else if (get_context < 0)
421 th->reload_context = 1;
429 /* Add a thread to the thread list. */
430 static windows_thread_info *
431 windows_add_thread (ptid_t ptid, HANDLE h, void *tlb)
433 windows_thread_info *th;
436 gdb_assert (ptid.tid () != 0);
440 if ((th = thread_rec (id, FALSE)))
443 th = XCNEW (windows_thread_info);
446 th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
447 th->next = thread_head.next;
448 thread_head.next = th;
450 /* Set the debug registers for the new thread if they are used. */
451 if (debug_registers_used)
453 /* Only change the value of the debug registers. */
454 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
455 CHECK (GetThreadContext (th->h, &th->context));
456 th->context.Dr0 = dr[0];
457 th->context.Dr1 = dr[1];
458 th->context.Dr2 = dr[2];
459 th->context.Dr3 = dr[3];
460 th->context.Dr6 = DR6_CLEAR_VALUE;
461 th->context.Dr7 = dr[7];
462 CHECK (SetThreadContext (th->h, &th->context));
463 th->context.ContextFlags = 0;
468 /* Clear out any old thread list and reinitialize it to a
471 windows_init_thread_list (void)
473 windows_thread_info *th = &thread_head;
475 DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
477 while (th->next != NULL)
479 windows_thread_info *here = th->next;
480 th->next = here->next;
483 thread_head.next = NULL;
486 /* Delete a thread from the list of threads. */
488 windows_delete_thread (ptid_t ptid, DWORD exit_code)
490 windows_thread_info *th;
493 gdb_assert (ptid.tid () != 0);
498 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
499 else if (print_thread_events && id != main_thread_id)
500 printf_unfiltered (_("[%s exited with code %u]\n"),
501 target_pid_to_str (ptid), (unsigned) exit_code);
502 delete_thread (find_thread_ptid (ptid));
504 for (th = &thread_head;
505 th->next != NULL && th->next->id != id;
509 if (th->next != NULL)
511 windows_thread_info *here = th->next;
512 th->next = here->next;
518 /* Fetches register number R from the given windows_thread_info,
519 and supplies its value to the given regcache.
521 This function assumes that R is non-negative. A failed assertion
522 is raised if that is not true.
524 This function assumes that TH->RELOAD_CONTEXT is not set, meaning
525 that the windows_thread_info has an up-to-date context. A failed
526 assertion is raised if that assumption is violated. */
529 windows_fetch_one_register (struct regcache *regcache,
530 windows_thread_info *th, int r)
533 gdb_assert (!th->reload_context);
535 char *context_offset = ((char *) &th->context) + mappings[r];
536 struct gdbarch *gdbarch = regcache->arch ();
537 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
539 if (r == I387_FISEG_REGNUM (tdep))
541 long l = *((long *) context_offset) & 0xffff;
542 regcache->raw_supply (r, (char *) &l);
544 else if (r == I387_FOP_REGNUM (tdep))
546 long l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
547 regcache->raw_supply (r, (char *) &l);
549 else if (segment_register_p (r))
551 /* GDB treats segment registers as 32bit registers, but they are
552 in fact only 16 bits long. Make sure we do not read extra
553 bits from our source buffer. */
554 long l = *((long *) context_offset) & 0xffff;
555 regcache->raw_supply (r, (char *) &l);
558 regcache->raw_supply (r, context_offset);
562 windows_nat_target::fetch_registers (struct regcache *regcache, int r)
564 DWORD pid = regcache->ptid ().tid ();
565 windows_thread_info *th = thread_rec (pid, TRUE);
567 /* Check if TH exists. Windows sometimes uses a non-existent
568 thread id in its events. */
572 if (th->reload_context)
575 if (have_saved_context)
577 /* Lie about where the program actually is stopped since
578 cygwin has informed us that we should consider the signal
579 to have occurred at another location which is stored in
581 memcpy (&th->context, &saved_context,
582 __COPY_CONTEXT_SIZE);
583 have_saved_context = 0;
588 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
589 CHECK (GetThreadContext (th->h, &th->context));
590 /* Copy dr values from that thread.
591 But only if there were not modified since last stop.
593 if (!debug_registers_changed)
595 dr[0] = th->context.Dr0;
596 dr[1] = th->context.Dr1;
597 dr[2] = th->context.Dr2;
598 dr[3] = th->context.Dr3;
599 dr[6] = th->context.Dr6;
600 dr[7] = th->context.Dr7;
603 th->reload_context = 0;
607 for (r = 0; r < gdbarch_num_regs (regcache->arch()); r++)
608 windows_fetch_one_register (regcache, th, r);
610 windows_fetch_one_register (regcache, th, r);
613 /* Collect the register number R from the given regcache, and store
614 its value into the corresponding area of the given thread's context.
616 This function assumes that R is non-negative. A failed assertion
617 assertion is raised if that is not true. */
620 windows_store_one_register (const struct regcache *regcache,
621 windows_thread_info *th, int r)
625 regcache->raw_collect (r, ((char *) &th->context) + mappings[r]);
628 /* Store a new register value into the context of the thread tied to
632 windows_nat_target::store_registers (struct regcache *regcache, int r)
634 DWORD pid = regcache->ptid ().tid ();
635 windows_thread_info *th = thread_rec (pid, TRUE);
637 /* Check if TH exists. Windows sometimes uses a non-existent
638 thread id in its events. */
643 for (r = 0; r < gdbarch_num_regs (regcache->arch ()); r++)
644 windows_store_one_register (regcache, th, r);
646 windows_store_one_register (regcache, th, r);
649 /* Encapsulate the information required in a call to
650 symbol_file_add_args. */
651 struct safe_symbol_file_add_args
655 section_addr_info *addrs;
658 struct ui_file *err, *out;
662 /* Maintain a linked list of "so" information. */
663 struct lm_info_windows : public lm_info_base
665 LPVOID load_addr = 0;
668 static struct so_list solib_start, *solib_end;
670 static struct so_list *
671 windows_make_so (const char *name, LPVOID load_addr)
678 WIN32_FIND_DATA w32_fd;
679 HANDLE h = FindFirstFile(name, &w32_fd);
681 if (h == INVALID_HANDLE_VALUE)
687 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
689 p = strrchr (buf, '\\');
692 SetCurrentDirectory (buf);
693 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
694 SetCurrentDirectory (cwd);
697 if (strcasecmp (buf, "ntdll.dll") == 0)
699 GetSystemDirectory (buf, sizeof (buf));
700 strcat (buf, "\\ntdll.dll");
703 cygwin_buf_t buf[__PMAX];
706 if (access (name, F_OK) != 0)
708 if (strcasecmp (name, "ntdll.dll") == 0)
711 GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t));
712 wcscat (buf, L"\\ntdll.dll");
716 GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t));
717 strcat (buf, "\\ntdll.dll");
722 so = XCNEW (struct so_list);
723 lm_info_windows *li = new lm_info_windows;
725 li->load_addr = load_addr;
726 strcpy (so->so_original_name, name);
728 strcpy (so->so_name, buf);
731 cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name,
732 SO_NAME_MAX_PATH_SIZE);
735 char *rname = realpath (name, NULL);
736 if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE)
738 strcpy (so->so_name, rname);
742 error (_("dll path too long"));
744 /* Record cygwin1.dll .text start/end. */
745 p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
746 if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
748 asection *text = NULL;
751 gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->so_name, "pei-i386", -1));
756 if (bfd_check_format (abfd.get (), bfd_object))
757 text = bfd_get_section_by_name (abfd.get (), ".text");
762 /* The symbols in a dll are offset by 0x1000, which is the
763 offset from 0 of the first byte in an image - because of the
764 file header and the section alignment. */
765 cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *)
767 cygwin_load_end = cygwin_load_start + bfd_section_size (abfd.get (),
776 get_image_name (HANDLE h, void *address, int unicode)
779 static char buf[__PMAX];
781 static char buf[(2 * __PMAX) + 1];
783 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
789 /* Attempt to read the name of the dll that was detected.
790 This is documented to work only when actively debugging
791 a program. It will not work for attached processes. */
795 /* See if we could read the address of a string, and that the
796 address isn't null. */
797 if (!ReadProcessMemory (h, address, &address_ptr,
798 sizeof (address_ptr), &done)
799 || done != sizeof (address_ptr) || !address_ptr)
802 /* Find the length of the string. */
803 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
804 && (b[0] != 0 || b[size - 1] != 0) && done == size)
808 ReadProcessMemory (h, address_ptr, buf, len, &done);
811 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
812 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
815 wcstombs (buf, unicode_address, __PMAX);
817 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf,
825 /* Handle a DLL load event, and return 1.
827 This function assumes that this event did not occur during inferior
828 initialization, where their event info may be incomplete (see
829 do_initial_windows_stuff and windows_add_all_dlls for more info
830 on how we handle DLL loading during that phase). */
835 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
838 /* Try getting the DLL name via the lpImageName field of the event.
839 Note that Microsoft documents this fields as strictly optional,
840 in the sense that it might be NULL. And the first DLL event in
841 particular is explicitly documented as "likely not pass[ed]"
842 (source: MSDN LOAD_DLL_DEBUG_INFO structure). */
843 dll_name = get_image_name (current_process_handle,
844 event->lpImageName, event->fUnicode);
848 solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
849 solib_end = solib_end->next;
851 lm_info_windows *li = (lm_info_windows *) solib_end->lm_info;
853 DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
854 host_address_to_string (li->load_addr)));
858 windows_free_so (struct so_list *so)
860 lm_info_windows *li = (lm_info_windows *) so->lm_info;
866 /* Handle a DLL unload event.
867 Return 1 if successful, or zero otherwise.
869 This function assumes that this event did not occur during inferior
870 initialization, where their event info may be incomplete (see
871 do_initial_windows_stuff and windows_add_all_dlls for more info
872 on how we handle DLL loading during that phase). */
877 LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
880 for (so = &solib_start; so->next != NULL; so = so->next)
882 lm_info_windows *li_next = (lm_info_windows *) so->next->lm_info;
884 if (li_next->load_addr == lpBaseOfDll)
886 struct so_list *sodel = so->next;
888 so->next = sodel->next;
891 DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
893 windows_free_so (sodel);
898 /* We did not find any DLL that was previously loaded at this address,
899 so register a complaint. We do not report an error, because we have
900 observed that this may be happening under some circumstances. For
901 instance, running 32bit applications on x64 Windows causes us to receive
902 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these
903 events are apparently caused by the WOW layer, the interface between
904 32bit and 64bit worlds). */
905 complaint (_("dll starting at %s not found."),
906 host_address_to_string (lpBaseOfDll));
909 /* Call FUNC wrapped in a TRY/CATCH that swallows all GDB
913 catch_errors (void (*func) ())
919 CATCH (ex, RETURN_MASK_ALL)
921 exception_print (gdb_stderr, ex);
926 /* Clear list of loaded DLLs. */
928 windows_clear_solib (void)
930 solib_start.next = NULL;
931 solib_end = &solib_start;
935 signal_event_command (const char *args, int from_tty)
937 uintptr_t event_id = 0;
938 char *endargs = NULL;
941 error (_("signal-event requires an argument (integer event id)"));
943 event_id = strtoumax (args, &endargs, 10);
945 if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) ||
946 ((HANDLE) event_id == INVALID_HANDLE_VALUE))
947 error (_("Failed to convert `%s' to event id"), args);
949 SetEvent ((HANDLE) event_id);
950 CloseHandle ((HANDLE) event_id);
953 /* Handle DEBUG_STRING output from child process.
954 Cygwin prepends its messages with a "cygwin:". Interpret this as
955 a Cygwin signal. Otherwise just print the string as a warning. */
957 handle_output_debug_string (struct target_waitstatus *ourstatus)
959 gdb::unique_xmalloc_ptr<char> s;
962 if (!target_read_string
963 ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
965 || !s || !*(s.get ()))
967 else if (!startswith (s.get (), _CYGWIN_SIGNAL_STRING))
970 if (!startswith (s.get (), "cYg"))
973 char *p = strchr (s.get (), '\0');
975 if (p > s.get () && *--p == '\n')
977 warning (("%s"), s.get ());
983 /* Got a cygwin signal marker. A cygwin signal is followed by
984 the signal number itself and then optionally followed by the
985 thread id and address to saved context within the DLL. If
986 these are supplied, then the given thread is assumed to have
987 issued the signal and the context from the thread is assumed
988 to be stored at the given address in the inferior. Tell gdb
989 to treat this like a real signal. */
991 int sig = strtol (s.get () + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
992 gdb_signal gotasig = gdb_signal_from_host (sig);
994 ourstatus->value.sig = gotasig;
1000 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1001 retval = strtoul (p, &p, 0);
1003 retval = main_thread_id;
1004 else if ((x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0))
1005 && ReadProcessMemory (current_process_handle, x,
1007 __COPY_CONTEXT_SIZE, &n)
1008 && n == __COPY_CONTEXT_SIZE)
1009 have_saved_context = 1;
1018 display_selector (HANDLE thread, DWORD sel)
1021 if (GetThreadSelectorEntry (thread, sel, &info))
1024 printf_filtered ("0x%03x: ", (unsigned) sel);
1025 if (!info.HighWord.Bits.Pres)
1027 puts_filtered ("Segment not present\n");
1030 base = (info.HighWord.Bits.BaseHi << 24) +
1031 (info.HighWord.Bits.BaseMid << 16)
1033 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
1034 if (info.HighWord.Bits.Granularity)
1035 limit = (limit << 12) | 0xfff;
1036 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
1037 if (info.HighWord.Bits.Default_Big)
1038 puts_filtered(" 32-bit ");
1040 puts_filtered(" 16-bit ");
1041 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
1044 puts_filtered ("Data (Read-Only, Exp-up");
1047 puts_filtered ("Data (Read/Write, Exp-up");
1050 puts_filtered ("Unused segment (");
1053 puts_filtered ("Data (Read/Write, Exp-down");
1056 puts_filtered ("Code (Exec-Only, N.Conf");
1059 puts_filtered ("Code (Exec/Read, N.Conf");
1062 puts_filtered ("Code (Exec-Only, Conf");
1065 puts_filtered ("Code (Exec/Read, Conf");
1068 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
1070 if ((info.HighWord.Bits.Type & 0x1) == 0)
1071 puts_filtered(", N.Acc");
1072 puts_filtered (")\n");
1073 if ((info.HighWord.Bits.Type & 0x10) == 0)
1074 puts_filtered("System selector ");
1075 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
1076 if (info.HighWord.Bits.Granularity)
1077 puts_filtered ("Page granular.\n");
1079 puts_filtered ("Byte granular.\n");
1084 DWORD err = GetLastError ();
1085 if (err == ERROR_NOT_SUPPORTED)
1086 printf_filtered ("Function not supported\n");
1088 printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel);
1094 display_selectors (const char * args, int from_tty)
1096 if (!current_thread)
1098 puts_filtered ("Impossible to display selectors now.\n");
1104 puts_filtered ("Selector $cs\n");
1105 display_selector (current_thread->h,
1106 current_thread->context.SegCs);
1107 puts_filtered ("Selector $ds\n");
1108 display_selector (current_thread->h,
1109 current_thread->context.SegDs);
1110 puts_filtered ("Selector $es\n");
1111 display_selector (current_thread->h,
1112 current_thread->context.SegEs);
1113 puts_filtered ("Selector $ss\n");
1114 display_selector (current_thread->h,
1115 current_thread->context.SegSs);
1116 puts_filtered ("Selector $fs\n");
1117 display_selector (current_thread->h,
1118 current_thread->context.SegFs);
1119 puts_filtered ("Selector $gs\n");
1120 display_selector (current_thread->h,
1121 current_thread->context.SegGs);
1126 sel = parse_and_eval_long (args);
1127 printf_filtered ("Selector \"%s\"\n",args);
1128 display_selector (current_thread->h, sel);
1132 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
1133 printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
1134 host_address_to_string (\
1135 current_event.u.Exception.ExceptionRecord.ExceptionAddress))
1137 static handle_exception_result
1138 handle_exception (struct target_waitstatus *ourstatus)
1140 EXCEPTION_RECORD *rec = ¤t_event.u.Exception.ExceptionRecord;
1141 DWORD code = rec->ExceptionCode;
1142 handle_exception_result result = HANDLE_EXCEPTION_HANDLED;
1144 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1146 /* Record the context of the current thread. */
1147 thread_rec (current_event.dwThreadId, -1);
1151 case EXCEPTION_ACCESS_VIOLATION:
1152 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1153 ourstatus->value.sig = GDB_SIGNAL_SEGV;
1156 /* See if the access violation happened within the cygwin DLL
1157 itself. Cygwin uses a kind of exception handling to deal
1158 with passed-in invalid addresses. gdb should not treat
1159 these as real SEGVs since they will be silently handled by
1160 cygwin. A real SEGV will (theoretically) be caught by
1161 cygwin later in the process and will be sent as a
1162 cygwin-specific-signal. So, ignore SEGVs if they show up
1163 within the text segment of the DLL itself. */
1165 CORE_ADDR addr = (CORE_ADDR) (uintptr_t) rec->ExceptionAddress;
1167 if ((!cygwin_exceptions && (addr >= cygwin_load_start
1168 && addr < cygwin_load_end))
1169 || (find_pc_partial_function (addr, &fn, NULL, NULL)
1170 && startswith (fn, "KERNEL32!IsBad")))
1171 return HANDLE_EXCEPTION_UNHANDLED;
1175 case STATUS_STACK_OVERFLOW:
1176 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1177 ourstatus->value.sig = GDB_SIGNAL_SEGV;
1179 case STATUS_FLOAT_DENORMAL_OPERAND:
1180 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1181 ourstatus->value.sig = GDB_SIGNAL_FPE;
1183 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1184 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1185 ourstatus->value.sig = GDB_SIGNAL_FPE;
1187 case STATUS_FLOAT_INEXACT_RESULT:
1188 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1189 ourstatus->value.sig = GDB_SIGNAL_FPE;
1191 case STATUS_FLOAT_INVALID_OPERATION:
1192 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1193 ourstatus->value.sig = GDB_SIGNAL_FPE;
1195 case STATUS_FLOAT_OVERFLOW:
1196 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1197 ourstatus->value.sig = GDB_SIGNAL_FPE;
1199 case STATUS_FLOAT_STACK_CHECK:
1200 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1201 ourstatus->value.sig = GDB_SIGNAL_FPE;
1203 case STATUS_FLOAT_UNDERFLOW:
1204 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1205 ourstatus->value.sig = GDB_SIGNAL_FPE;
1207 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1208 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1209 ourstatus->value.sig = GDB_SIGNAL_FPE;
1211 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1212 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1213 ourstatus->value.sig = GDB_SIGNAL_FPE;
1215 case STATUS_INTEGER_OVERFLOW:
1216 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1217 ourstatus->value.sig = GDB_SIGNAL_FPE;
1219 case EXCEPTION_BREAKPOINT:
1220 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1221 ourstatus->value.sig = GDB_SIGNAL_TRAP;
1224 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1225 ourstatus->value.sig = GDB_SIGNAL_INT;
1227 case DBG_CONTROL_BREAK:
1228 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1229 ourstatus->value.sig = GDB_SIGNAL_INT;
1231 case EXCEPTION_SINGLE_STEP:
1232 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1233 ourstatus->value.sig = GDB_SIGNAL_TRAP;
1235 case EXCEPTION_ILLEGAL_INSTRUCTION:
1236 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1237 ourstatus->value.sig = GDB_SIGNAL_ILL;
1239 case EXCEPTION_PRIV_INSTRUCTION:
1240 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1241 ourstatus->value.sig = GDB_SIGNAL_ILL;
1243 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1244 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1245 ourstatus->value.sig = GDB_SIGNAL_ILL;
1247 case MS_VC_EXCEPTION:
1248 if (rec->NumberParameters >= 3
1249 && (rec->ExceptionInformation[0] & 0xffffffff) == 0x1000)
1251 DWORD named_thread_id;
1252 windows_thread_info *named_thread;
1253 CORE_ADDR thread_name_target;
1255 DEBUG_EXCEPTION_SIMPLE ("MS_VC_EXCEPTION");
1257 thread_name_target = rec->ExceptionInformation[1];
1258 named_thread_id = (DWORD) (0xffffffff & rec->ExceptionInformation[2]);
1260 if (named_thread_id == (DWORD) -1)
1261 named_thread_id = current_event.dwThreadId;
1263 named_thread = thread_rec (named_thread_id, 0);
1264 if (named_thread != NULL)
1266 int thread_name_len;
1267 gdb::unique_xmalloc_ptr<char> thread_name;
1269 thread_name_len = target_read_string (thread_name_target,
1270 &thread_name, 1025, NULL);
1271 if (thread_name_len > 0)
1273 thread_name.get ()[thread_name_len - 1] = '\0';
1274 xfree (named_thread->name);
1275 named_thread->name = thread_name.release ();
1278 ourstatus->value.sig = GDB_SIGNAL_TRAP;
1279 result = HANDLE_EXCEPTION_IGNORED;
1282 /* treat improperly formed exception as unknown */
1285 /* Treat unhandled first chance exceptions specially. */
1286 if (current_event.u.Exception.dwFirstChance)
1287 return HANDLE_EXCEPTION_UNHANDLED;
1288 printf_unfiltered ("gdb: unknown target exception 0x%08x at %s\n",
1289 (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode,
1290 host_address_to_string (
1291 current_event.u.Exception.ExceptionRecord.ExceptionAddress));
1292 ourstatus->value.sig = GDB_SIGNAL_UNKNOWN;
1296 last_sig = ourstatus->value.sig;
1300 /* Resume thread specified by ID, or all artificially suspended
1301 threads, if we are continuing execution. KILLED non-zero means we
1302 have killed the inferior, so we should ignore weird errors due to
1303 threads shutting down. */
1305 windows_continue (DWORD continue_status, int id, int killed)
1307 windows_thread_info *th;
1310 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=0x%x, %s);\n",
1311 (unsigned) current_event.dwProcessId,
1312 (unsigned) current_event.dwThreadId,
1313 continue_status == DBG_CONTINUE ?
1314 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1316 for (th = &thread_head; (th = th->next) != NULL;)
1317 if ((id == -1 || id == (int) th->id)
1320 if (debug_registers_changed)
1322 th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1323 th->context.Dr0 = dr[0];
1324 th->context.Dr1 = dr[1];
1325 th->context.Dr2 = dr[2];
1326 th->context.Dr3 = dr[3];
1327 th->context.Dr6 = DR6_CLEAR_VALUE;
1328 th->context.Dr7 = dr[7];
1330 if (th->context.ContextFlags)
1334 if (GetExitCodeThread (th->h, &ec)
1335 && ec == STILL_ACTIVE)
1337 BOOL status = SetThreadContext (th->h, &th->context);
1342 th->context.ContextFlags = 0;
1344 if (th->suspended > 0)
1345 (void) ResumeThread (th->h);
1349 res = ContinueDebugEvent (current_event.dwProcessId,
1350 current_event.dwThreadId,
1354 error (_("Failed to resume program execution"
1355 " (ContinueDebugEvent failed, error %u)"),
1356 (unsigned int) GetLastError ());
1358 debug_registers_changed = 0;
1362 /* Called in pathological case where Windows fails to send a
1363 CREATE_PROCESS_DEBUG_EVENT after an attach. */
1365 fake_create_process (void)
1367 current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
1368 current_event.dwProcessId);
1369 if (current_process_handle != NULL)
1370 open_process_used = 1;
1373 error (_("OpenProcess call failed, GetLastError = %u"),
1374 (unsigned) GetLastError ());
1375 /* We can not debug anything in that case. */
1377 main_thread_id = current_event.dwThreadId;
1378 current_thread = windows_add_thread (
1379 ptid_t (current_event.dwProcessId, 0,
1380 current_event.dwThreadId),
1381 current_event.u.CreateThread.hThread,
1382 current_event.u.CreateThread.lpThreadLocalBase);
1383 return main_thread_id;
1387 windows_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig)
1389 windows_thread_info *th;
1390 DWORD continue_status = DBG_CONTINUE;
1392 /* A specific PTID means `step only this thread id'. */
1393 int resume_all = ptid == minus_one_ptid;
1395 /* If we're continuing all threads, it's the current inferior that
1396 should be handled specially. */
1398 ptid = inferior_ptid;
1400 if (sig != GDB_SIGNAL_0)
1402 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1404 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1406 else if (sig == last_sig)
1407 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1410 /* This code does not seem to work, because
1411 the kernel does probably not consider changes in the ExceptionRecord
1412 structure when passing the exception to the inferior.
1413 Note that this seems possible in the exception handler itself. */
1415 for (const xlate_exception &x : xlate)
1418 current_event.u.Exception.ExceptionRecord.ExceptionCode
1420 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1423 if (continue_status == DBG_CONTINUE)
1425 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1429 DEBUG_EXCEPT(("Can only continue with received signal %d.\n",
1433 last_sig = GDB_SIGNAL_0;
1435 DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
1436 ptid.pid (), ptid.tid (), step, sig));
1438 /* Get context for currently selected thread. */
1439 th = thread_rec (inferior_ptid.tid (), FALSE);
1444 /* Single step by setting t bit. */
1445 struct regcache *regcache = get_current_regcache ();
1446 struct gdbarch *gdbarch = regcache->arch ();
1447 fetch_registers (regcache, gdbarch_ps_regnum (gdbarch));
1448 th->context.EFlags |= FLAG_TRACE_BIT;
1451 if (th->context.ContextFlags)
1453 if (debug_registers_changed)
1455 th->context.Dr0 = dr[0];
1456 th->context.Dr1 = dr[1];
1457 th->context.Dr2 = dr[2];
1458 th->context.Dr3 = dr[3];
1459 th->context.Dr6 = DR6_CLEAR_VALUE;
1460 th->context.Dr7 = dr[7];
1462 CHECK (SetThreadContext (th->h, &th->context));
1463 th->context.ContextFlags = 0;
1467 /* Allow continuing with the same signal that interrupted us.
1468 Otherwise complain. */
1471 windows_continue (continue_status, -1, 0);
1473 windows_continue (continue_status, ptid.tid (), 0);
1476 /* Ctrl-C handler used when the inferior is not run in the same console. The
1477 handler is in charge of interrupting the inferior using DebugBreakProcess.
1478 Note that this function is not available prior to Windows XP. In this case
1479 we emit a warning. */
1481 ctrl_c_handler (DWORD event_type)
1483 const int attach_flag = current_inferior ()->attach_flag;
1485 /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
1486 if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
1489 /* If the inferior and the debugger share the same console, do nothing as
1490 the inferior has also received the Ctrl-C event. */
1491 if (!new_console && !attach_flag)
1494 if (!DebugBreakProcess (current_process_handle))
1495 warning (_("Could not interrupt program. "
1496 "Press Ctrl-c in the program console."));
1498 /* Return true to tell that Ctrl-C has been handled. */
1502 /* Get the next event from the child. Returns a non-zero thread id if the event
1503 requires handling by WFI (or whatever). */
1505 get_windows_debug_event (struct target_ops *ops,
1506 int pid, struct target_waitstatus *ourstatus)
1509 DWORD continue_status, event_code;
1510 windows_thread_info *th;
1511 static windows_thread_info dummy_thread_info;
1512 DWORD thread_id = 0;
1514 last_sig = GDB_SIGNAL_0;
1516 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1520 continue_status = DBG_CONTINUE;
1522 event_code = current_event.dwDebugEventCode;
1523 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1525 have_saved_context = 0;
1529 case CREATE_THREAD_DEBUG_EVENT:
1530 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1531 (unsigned) current_event.dwProcessId,
1532 (unsigned) current_event.dwThreadId,
1533 "CREATE_THREAD_DEBUG_EVENT"));
1534 if (saw_create != 1)
1536 struct inferior *inf;
1537 inf = find_inferior_pid (current_event.dwProcessId);
1538 if (!saw_create && inf->attach_flag)
1540 /* Kludge around a Windows bug where first event is a create
1541 thread event. Caused when attached process does not have
1543 thread_id = fake_create_process ();
1549 /* Record the existence of this thread. */
1550 thread_id = current_event.dwThreadId;
1551 th = windows_add_thread (ptid_t (current_event.dwProcessId, 0,
1552 current_event.dwThreadId),
1553 current_event.u.CreateThread.hThread,
1554 current_event.u.CreateThread.lpThreadLocalBase);
1558 case EXIT_THREAD_DEBUG_EVENT:
1559 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1560 (unsigned) current_event.dwProcessId,
1561 (unsigned) current_event.dwThreadId,
1562 "EXIT_THREAD_DEBUG_EVENT"));
1564 if (current_event.dwThreadId != main_thread_id)
1566 windows_delete_thread (ptid_t (current_event.dwProcessId, 0,
1567 current_event.dwThreadId),
1568 current_event.u.ExitThread.dwExitCode);
1569 th = &dummy_thread_info;
1573 case CREATE_PROCESS_DEBUG_EVENT:
1574 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1575 (unsigned) current_event.dwProcessId,
1576 (unsigned) current_event.dwThreadId,
1577 "CREATE_PROCESS_DEBUG_EVENT"));
1578 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1579 if (++saw_create != 1)
1582 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1584 windows_delete_thread (ptid_t (current_event.dwProcessId, 0,
1587 main_thread_id = current_event.dwThreadId;
1588 /* Add the main thread. */
1589 th = windows_add_thread (ptid_t (current_event.dwProcessId, 0,
1590 current_event.dwThreadId),
1591 current_event.u.CreateProcessInfo.hThread,
1592 current_event.u.CreateProcessInfo.lpThreadLocalBase);
1593 thread_id = current_event.dwThreadId;
1596 case EXIT_PROCESS_DEBUG_EVENT:
1597 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1598 (unsigned) current_event.dwProcessId,
1599 (unsigned) current_event.dwThreadId,
1600 "EXIT_PROCESS_DEBUG_EVENT"));
1601 if (!windows_initialization_done)
1603 target_terminal::ours ();
1604 target_mourn_inferior (inferior_ptid);
1605 error (_("During startup program exited with code 0x%x."),
1606 (unsigned int) current_event.u.ExitProcess.dwExitCode);
1608 else if (saw_create == 1)
1610 ourstatus->kind = TARGET_WAITKIND_EXITED;
1611 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1612 thread_id = main_thread_id;
1616 case LOAD_DLL_DEBUG_EVENT:
1617 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1618 (unsigned) current_event.dwProcessId,
1619 (unsigned) current_event.dwThreadId,
1620 "LOAD_DLL_DEBUG_EVENT"));
1621 CloseHandle (current_event.u.LoadDll.hFile);
1622 if (saw_create != 1 || ! windows_initialization_done)
1624 catch_errors (handle_load_dll);
1625 ourstatus->kind = TARGET_WAITKIND_LOADED;
1626 ourstatus->value.integer = 0;
1627 thread_id = main_thread_id;
1630 case UNLOAD_DLL_DEBUG_EVENT:
1631 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1632 (unsigned) current_event.dwProcessId,
1633 (unsigned) current_event.dwThreadId,
1634 "UNLOAD_DLL_DEBUG_EVENT"));
1635 if (saw_create != 1 || ! windows_initialization_done)
1637 catch_errors (handle_unload_dll);
1638 ourstatus->kind = TARGET_WAITKIND_LOADED;
1639 ourstatus->value.integer = 0;
1640 thread_id = main_thread_id;
1643 case EXCEPTION_DEBUG_EVENT:
1644 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1645 (unsigned) current_event.dwProcessId,
1646 (unsigned) current_event.dwThreadId,
1647 "EXCEPTION_DEBUG_EVENT"));
1648 if (saw_create != 1)
1650 switch (handle_exception (ourstatus))
1652 case HANDLE_EXCEPTION_UNHANDLED:
1654 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1656 case HANDLE_EXCEPTION_HANDLED:
1657 thread_id = current_event.dwThreadId;
1659 case HANDLE_EXCEPTION_IGNORED:
1660 continue_status = DBG_CONTINUE;
1665 case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */
1666 DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
1667 (unsigned) current_event.dwProcessId,
1668 (unsigned) current_event.dwThreadId,
1669 "OUTPUT_DEBUG_STRING_EVENT"));
1670 if (saw_create != 1)
1672 thread_id = handle_output_debug_string (ourstatus);
1676 if (saw_create != 1)
1678 printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n",
1679 (unsigned) current_event.dwProcessId,
1680 (unsigned) current_event.dwThreadId);
1681 printf_unfiltered (" unknown event code %u\n",
1682 (unsigned) current_event.dwDebugEventCode);
1686 if (!thread_id || saw_create != 1)
1688 CHECK (windows_continue (continue_status, -1, 0));
1692 inferior_ptid = ptid_t (current_event.dwProcessId, 0, thread_id);
1693 current_thread = th;
1694 if (!current_thread)
1695 current_thread = thread_rec (thread_id, TRUE);
1702 /* Wait for interesting events to occur in the target process. */
1704 windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
1709 /* We loop when we get a non-standard exception rather than return
1710 with a SPURIOUS because resume can try and step or modify things,
1711 which needs a current_thread->h. But some of these exceptions mark
1712 the birth or death of threads, which mean that the current thread
1713 isn't necessarily what you think it is. */
1719 /* If the user presses Ctrl-c while the debugger is waiting
1720 for an event, he expects the debugger to interrupt his program
1721 and to get the prompt back. There are two possible situations:
1723 - The debugger and the program do not share the console, in
1724 which case the Ctrl-c event only reached the debugger.
1725 In that case, the ctrl_c handler will take care of interrupting
1726 the inferior. Note that this case is working starting with
1727 Windows XP. For Windows 2000, Ctrl-C should be pressed in the
1730 - The debugger and the program share the same console, in which
1731 case both debugger and inferior will receive the Ctrl-c event.
1732 In that case the ctrl_c handler will ignore the event, as the
1733 Ctrl-c event generated inside the inferior will trigger the
1734 expected debug event.
1736 FIXME: brobecker/2008-05-20: If the inferior receives the
1737 signal first and the delay until GDB receives that signal
1738 is sufficiently long, GDB can sometimes receive the SIGINT
1739 after we have unblocked the CTRL+C handler. This would
1740 lead to the debugger stopping prematurely while handling
1741 the new-thread event that comes with the handling of the SIGINT
1742 inside the inferior, and then stop again immediately when
1743 the user tries to resume the execution in the inferior.
1744 This is a classic race that we should try to fix one day. */
1745 SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
1746 retval = get_windows_debug_event (this, pid, ourstatus);
1747 SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
1750 return ptid_t (current_event.dwProcessId, 0, retval);
1755 if (deprecated_ui_loop_hook != NULL)
1756 detach = deprecated_ui_loop_hook (0);
1764 /* Iterate over all DLLs currently mapped by our inferior, and
1765 add them to our list of solibs. */
1768 windows_add_all_dlls (void)
1770 HMODULE dummy_hmodule;
1775 if (EnumProcessModules (current_process_handle, &dummy_hmodule,
1776 sizeof (HMODULE), &cb_needed) == 0)
1782 hmodules = (HMODULE *) alloca (cb_needed);
1783 if (EnumProcessModules (current_process_handle, hmodules,
1784 cb_needed, &cb_needed) == 0)
1787 for (i = 1; i < (int) (cb_needed / sizeof (HMODULE)); i++)
1791 wchar_t dll_name[__PMAX];
1794 char dll_name[__PMAX];
1797 if (GetModuleInformation (current_process_handle, hmodules[i],
1798 &mi, sizeof (mi)) == 0)
1800 if (GetModuleFileNameEx (current_process_handle, hmodules[i],
1801 dll_name, sizeof (dll_name)) == 0)
1804 wcstombs (name, dll_name, __PMAX);
1809 solib_end->next = windows_make_so (name, mi.lpBaseOfDll);
1810 solib_end = solib_end->next;
1815 do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
1818 struct inferior *inf;
1820 last_sig = GDB_SIGNAL_0;
1822 exception_count = 0;
1823 open_process_used = 0;
1824 debug_registers_changed = 0;
1825 debug_registers_used = 0;
1826 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1829 cygwin_load_start = cygwin_load_end = 0;
1831 current_event.dwProcessId = pid;
1832 memset (¤t_event, 0, sizeof (current_event));
1833 if (!target_is_pushed (ops))
1835 disable_breakpoints_in_shlibs ();
1836 windows_clear_solib ();
1837 clear_proceed_status (0);
1838 init_wait_for_inferior ();
1840 inf = current_inferior ();
1841 inferior_appeared (inf, pid);
1842 inf->attach_flag = attaching;
1844 /* Make the new process the current inferior, so terminal handling
1845 can rely on it. When attaching, we don't know about any thread
1846 id here, but that's OK --- nothing should be referencing the
1847 current thread until we report an event out of windows_wait. */
1848 inferior_ptid = ptid_t (pid);
1850 target_terminal::init ();
1851 target_terminal::inferior ();
1853 windows_initialization_done = 0;
1857 struct target_waitstatus status;
1859 ops->wait (minus_one_ptid, &status, 0);
1861 /* Note windows_wait returns TARGET_WAITKIND_SPURIOUS for thread
1863 if (status.kind != TARGET_WAITKIND_LOADED
1864 && status.kind != TARGET_WAITKIND_SPURIOUS)
1867 ops->resume (minus_one_ptid, 0, GDB_SIGNAL_0);
1870 /* Now that the inferior has been started and all DLLs have been mapped,
1871 we can iterate over all DLLs and load them in.
1873 We avoid doing it any earlier because, on certain versions of Windows,
1874 LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
1875 we have seen on Windows 8.1 that the ntdll.dll load event does not
1876 include the DLL name, preventing us from creating an associated SO.
1877 A possible explanation is that ntdll.dll might be mapped before
1878 the SO info gets created by the Windows system -- ntdll.dll is
1879 the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
1880 do not seem to suffer from that problem.
1882 Rather than try to work around this sort of issue, it is much
1883 simpler to just ignore DLL load/unload events during the startup
1884 phase, and then process them all in one batch now. */
1885 windows_add_all_dlls ();
1887 windows_initialization_done = 1;
1891 /* Try to set or remove a user privilege to the current process. Return -1
1892 if that fails, the previous setting of that privilege otherwise.
1894 This code is copied from the Cygwin source code and rearranged to allow
1895 dynamically loading of the needed symbols from advapi32 which is only
1896 available on NT/2K/XP. */
1898 set_process_privilege (const char *privilege, BOOL enable)
1900 HANDLE token_hdl = NULL;
1902 TOKEN_PRIVILEGES new_priv, orig_priv;
1906 if (!OpenProcessToken (GetCurrentProcess (),
1907 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1911 if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
1914 new_priv.PrivilegeCount = 1;
1915 new_priv.Privileges[0].Luid = restore_priv;
1916 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1918 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1919 sizeof orig_priv, &orig_priv, &size))
1922 /* Disabled, otherwise every `attach' in an unprivileged user session
1923 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1924 windows_attach(). */
1925 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1926 be enabled. GetLastError () returns an correct error code, though. */
1927 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1931 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1935 CloseHandle (token_hdl);
1940 /* Attach to process PID, then initialize for debugging it. */
1943 windows_nat_target::attach (const char *args, int from_tty)
1948 pid = parse_pid_to_attach (args);
1950 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1952 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1953 printf_unfiltered ("This can cause attach to "
1954 "fail on Windows NT/2K/XP\n");
1957 windows_init_thread_list ();
1958 ok = DebugActiveProcess (pid);
1964 /* Try fall back to Cygwin pid. */
1965 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1968 ok = DebugActiveProcess (pid);
1973 error (_("Can't attach to process."));
1975 DebugSetProcessKillOnExit (FALSE);
1979 char *exec_file = (char *) get_exec_file (0);
1982 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1983 target_pid_to_str (ptid_t (pid)));
1985 printf_unfiltered ("Attaching to %s\n",
1986 target_pid_to_str (ptid_t (pid)));
1988 gdb_flush (gdb_stdout);
1991 do_initial_windows_stuff (this, pid, 1);
1992 target_terminal::ours ();
1996 windows_nat_target::detach (inferior *inf, int from_tty)
2000 ptid_t ptid = minus_one_ptid;
2001 resume (ptid, 0, GDB_SIGNAL_0);
2003 if (!DebugActiveProcessStop (current_event.dwProcessId))
2005 error (_("Can't detach process %u (error %u)"),
2006 (unsigned) current_event.dwProcessId, (unsigned) GetLastError ());
2009 DebugSetProcessKillOnExit (FALSE);
2011 if (detached && from_tty)
2013 const char *exec_file = get_exec_file (0);
2016 printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file,
2017 (unsigned) current_event.dwProcessId);
2018 gdb_flush (gdb_stdout);
2021 x86_cleanup_dregs ();
2022 inferior_ptid = null_ptid;
2023 detach_inferior (inf);
2025 maybe_unpush_target ();
2028 /* Try to determine the executable filename.
2030 EXE_NAME_RET is a pointer to a buffer whose size is EXE_NAME_MAX_LEN.
2032 Upon success, the filename is stored inside EXE_NAME_RET, and
2033 this function returns nonzero.
2035 Otherwise, this function returns zero and the contents of
2036 EXE_NAME_RET is undefined. */
2039 windows_get_exec_module_filename (char *exe_name_ret, size_t exe_name_max_len)
2046 if (!EnumProcessModules (current_process_handle, &dh_buf,
2047 sizeof (HMODULE), &cbNeeded) || !cbNeeded)
2050 /* We know the executable is always first in the list of modules,
2051 which we just fetched. So no need to fetch more. */
2055 /* Cygwin prefers that the path be in /x/y/z format, so extract
2056 the filename into a temporary buffer first, and then convert it
2057 to POSIX format into the destination buffer. */
2058 cygwin_buf_t *pathbuf = (cygwin_buf_t *) alloca (exe_name_max_len * sizeof (cygwin_buf_t));
2060 len = GetModuleFileNameEx (current_process_handle,
2061 dh_buf, pathbuf, exe_name_max_len);
2063 error (_("Error getting executable filename: %u."),
2064 (unsigned) GetLastError ());
2065 if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, exe_name_ret,
2066 exe_name_max_len) < 0)
2067 error (_("Error converting executable filename to POSIX: %d."), errno);
2070 len = GetModuleFileNameEx (current_process_handle,
2071 dh_buf, exe_name_ret, exe_name_max_len);
2073 error (_("Error getting executable filename: %u."),
2074 (unsigned) GetLastError ());
2077 return 1; /* success */
2080 /* The pid_to_exec_file target_ops method for this platform. */
2083 windows_nat_target::pid_to_exec_file (int pid)
2085 static char path[__PMAX];
2087 /* Try to find exe name as symlink target of /proc/<pid>/exe. */
2089 char procexe[sizeof ("/proc/4294967295/exe")];
2091 xsnprintf (procexe, sizeof (procexe), "/proc/%u/exe", pid);
2092 nchars = readlink (procexe, path, sizeof(path));
2093 if (nchars > 0 && nchars < sizeof (path))
2095 path[nchars] = '\0'; /* Got it */
2100 /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
2101 of gdb, or we're trying to debug a non-Cygwin windows executable. */
2102 if (!windows_get_exec_module_filename (path, sizeof (path)))
2108 /* Print status information about what we're accessing. */
2111 windows_nat_target::files_info ()
2113 struct inferior *inf = current_inferior ();
2115 printf_unfiltered ("\tUsing the running image of %s %s.\n",
2116 inf->attach_flag ? "attached" : "child",
2117 target_pid_to_str (inferior_ptid));
2120 /* Modify CreateProcess parameters for use of a new separate console.
2122 *FLAGS: DWORD parameter for general process creation flags.
2123 *SI: STARTUPINFO structure, for which the console window size and
2124 console buffer size is filled in if GDB is running in a console.
2125 to create the new console.
2126 The size of the used font is not available on all versions of
2127 Windows OS. Furthermore, the current font might not be the default
2128 font, but this is still better than before.
2129 If the windows and buffer sizes are computed,
2130 SI->DWFLAGS is changed so that this information is used
2131 by CreateProcess function. */
2134 windows_set_console_info (STARTUPINFO *si, DWORD *flags)
2136 HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE,
2137 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
2139 if (hconsole != INVALID_HANDLE_VALUE)
2141 CONSOLE_SCREEN_BUFFER_INFO sbinfo;
2143 CONSOLE_FONT_INFO cfi;
2145 GetCurrentConsoleFont (hconsole, FALSE, &cfi);
2146 font_size = GetConsoleFontSize (hconsole, cfi.nFont);
2147 GetConsoleScreenBufferInfo(hconsole, &sbinfo);
2148 si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1;
2149 si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1;
2151 si->dwXSize *= font_size.X;
2155 si->dwYSize *= font_size.Y;
2158 si->dwXCountChars = sbinfo.dwSize.X;
2159 si->dwYCountChars = sbinfo.dwSize.Y;
2160 si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS;
2162 *flags |= CREATE_NEW_CONSOLE;
2166 /* Function called by qsort to sort environment strings. */
2169 envvar_cmp (const void *a, const void *b)
2171 const char **p = (const char **) a;
2172 const char **q = (const char **) b;
2173 return strcasecmp (*p, *q);
2179 clear_win32_environment (char **env)
2183 wchar_t *copy = NULL, *equalpos;
2185 for (i = 0; env[i] && *env[i]; i++)
2187 len = mbstowcs (NULL, env[i], 0) + 1;
2188 copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t));
2189 mbstowcs (copy, env[i], len);
2190 equalpos = wcschr (copy, L'=');
2193 SetEnvironmentVariableW (copy, NULL);
2201 /* Redirection of inferior I/O streams for native MS-Windows programs.
2202 Unlike on Unix, where this is handled by invoking the inferior via
2203 the shell, on MS-Windows we need to emulate the cmd.exe shell.
2205 The official documentation of the cmd.exe redirection features is here:
2207 http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx
2209 (That page talks about Windows XP, but there's no newer
2210 documentation, so we assume later versions of cmd.exe didn't change
2213 Caveat: the documentation on that page seems to include a few lies.
2214 For example, it describes strange constructs 1<&2 and 2<&1, which
2215 seem to work only when 1>&2 resp. 2>&1 would make sense, and so I
2216 think the cmd.exe parser of the redirection symbols simply doesn't
2217 care about the < vs > distinction in these cases. Therefore, the
2218 supported features are explicitly documented below.
2220 The emulation below aims at supporting all the valid use cases
2221 supported by cmd.exe, which include:
2223 < FILE redirect standard input from FILE
2224 0< FILE redirect standard input from FILE
2225 <&N redirect standard input from file descriptor N
2226 0<&N redirect standard input from file descriptor N
2227 > FILE redirect standard output to FILE
2228 >> FILE append standard output to FILE
2229 1>> FILE append standard output to FILE
2230 >&N redirect standard output to file descriptor N
2231 1>&N redirect standard output to file descriptor N
2232 >>&N append standard output to file descriptor N
2233 1>>&N append standard output to file descriptor N
2234 2> FILE redirect standard error to FILE
2235 2>> FILE append standard error to FILE
2236 2>&N redirect standard error to file descriptor N
2237 2>>&N append standard error to file descriptor N
2239 Note that using N > 2 in the above construct is supported, but
2240 requires that the corresponding file descriptor be open by some
2241 means elsewhere or outside GDB. Also note that using ">&0" or
2242 "<&2" will generally fail, because the file descriptor redirected
2243 from is normally open in an incompatible mode (e.g., FD 0 is open
2244 for reading only). IOW, use of such tricks is not recommended;
2245 you are on your own.
2247 We do NOT support redirection of file descriptors above 2, as in
2248 "3>SOME-FILE", because MinGW compiled programs don't (supporting
2249 that needs special handling in the startup code that MinGW
2250 doesn't have). Pipes are also not supported.
2252 As for invalid use cases, where the redirection contains some
2253 error, the emulation below will detect that and produce some
2254 error and/or failure. But the behavior in those cases is not
2255 bug-for-bug compatible with what cmd.exe does in those cases.
2256 That's because what cmd.exe does then is not well defined, and
2257 seems to be a side effect of the cmd.exe parsing of the command
2258 line more than anything else. For example, try redirecting to an
2259 invalid file name, as in "> foo:bar".
2261 There are also minor syntactic deviations from what cmd.exe does
2262 in some corner cases. For example, it doesn't support the likes
2263 of "> &foo" to mean redirect to file named literally "&foo"; we
2264 do support that here, because that, too, sounds like some issue
2265 with the cmd.exe parser. Another nicety is that we support
2266 redirection targets that use file names with forward slashes,
2267 something cmd.exe doesn't -- this comes in handy since GDB
2268 file-name completion can be used when typing the command line for
2271 /* Support routines for redirecting standard handles of the inferior. */
2273 /* Parse a single redirection spec, open/duplicate the specified
2274 file/fd, and assign the appropriate value to one of the 3 standard
2275 file descriptors. */
2277 redir_open (const char *redir_string, int *inp, int *out, int *err)
2279 int *fd, ref_fd = -2;
2281 const char *fname = redir_string + 1;
2282 int rc = *redir_string;
2297 fd = (rc == '2') ? err : out;
2298 mode = O_WRONLY | O_CREAT;
2311 if (*fname == '&' && '0' <= fname[1] && fname[1] <= '9')
2313 /* A reference to a file descriptor. */
2315 ref_fd = (int) strtol (fname + 1, &fdtail, 10);
2316 if (fdtail > fname + 1 && *fdtail == '\0')
2318 /* Don't allow redirection when open modes are incompatible. */
2319 if ((ref_fd == 0 && (fd == out || fd == err))
2320 || ((ref_fd == 1 || ref_fd == 2) && fd == inp))
2327 else if (ref_fd == 1)
2329 else if (ref_fd == 2)
2339 fname++; /* skip the separator space */
2340 /* If the descriptor is already open, close it. This allows
2341 multiple specs of redirections for the same stream, which is
2342 somewhat nonsensical, but still valid and supported by cmd.exe.
2343 (But cmd.exe only opens a single file in this case, the one
2344 specified by the last redirection spec on the command line.) */
2349 *fd = _open (fname, mode, _S_IREAD | _S_IWRITE);
2353 else if (ref_fd == -1)
2354 *fd = -1; /* reset to default destination */
2357 *fd = _dup (ref_fd);
2361 /* _open just sets a flag for O_APPEND, which won't be passed to the
2362 inferior, so we need to actually move the file pointer. */
2363 if ((mode & O_APPEND) != 0)
2364 _lseek (*fd, 0L, SEEK_END);
2368 /* Canonicalize a single redirection spec and set up the corresponding
2369 file descriptor as specified. */
2371 redir_set_redirection (const char *s, int *inp, int *out, int *err)
2373 char buf[__PMAX + 2 + 5]; /* extra space for quotes & redirection string */
2375 const char *start = s;
2378 *d++ = *s++; /* copy the 1st character, < or > or a digit */
2379 if ((*start == '>' || *start == '1' || *start == '2')
2383 if (*s == '>' && *start != '>')
2386 else if (*start == '0' && *s == '<')
2388 /* cmd.exe recognizes "&N" only immediately after the redirection symbol. */
2391 while (isspace (*s)) /* skip whitespace before file name */
2393 *d++ = ' '; /* separate file name with a single space */
2396 /* Copy the file name. */
2399 /* Remove quoting characters from the file name in buf[]. */
2400 if (*s == '"') /* could support '..' quoting here */
2404 else if (*s == quote)
2412 else if (*s == '\\')
2414 if (s[1] == '"') /* could support '..' here */
2418 else if (isspace (*s) && !quote)
2422 if (d - buf >= sizeof (buf) - 1)
2424 errno = ENAMETOOLONG;
2430 /* Windows doesn't allow redirection characters in file names, so we
2431 can bail out early if they use them, or if there's no target file
2432 name after the redirection symbol. */
2433 if (d[-1] == '>' || d[-1] == '<')
2438 if (redir_open (buf, inp, out, err) == 0)
2443 /* Parse the command line for redirection specs and prepare the file
2444 descriptors for the 3 standard streams accordingly. */
2446 redirect_inferior_handles (const char *cmd_orig, char *cmd,
2447 int *inp, int *out, int *err)
2449 const char *s = cmd_orig;
2452 bool retval = false;
2454 while (isspace (*s))
2459 if (*s == '"') /* could also support '..' quoting here */
2463 else if (*s == quote)
2466 else if (*s == '\\')
2468 if (s[1] == '"') /* escaped quote char */
2473 /* Process a single redirection candidate. */
2474 if (*s == '<' || *s == '>'
2475 || ((*s == '1' || *s == '2') && s[1] == '>')
2476 || (*s == '0' && s[1] == '<'))
2478 int skip = redir_set_redirection (s, inp, out, err);
2492 #endif /* !__CYGWIN__ */
2494 /* Start an inferior windows child process and sets inferior_ptid to its pid.
2495 EXEC_FILE is the file to run.
2496 ALLARGS is a string containing the arguments to the program.
2497 ENV is the environment vector to pass. Errors reported with error(). */
2500 windows_nat_target::create_inferior (const char *exec_file,
2501 const std::string &origallargs,
2502 char **in_env, int from_tty)
2506 cygwin_buf_t real_path[__PMAX];
2507 cygwin_buf_t shell[__PMAX]; /* Path to shell */
2508 cygwin_buf_t infcwd[__PMAX];
2510 cygwin_buf_t *toexec;
2511 cygwin_buf_t *cygallargs;
2513 char **old_env = NULL;
2517 int ostdin, ostdout, ostderr;
2518 #else /* !__CYGWIN__ */
2519 char shell[__PMAX]; /* Path to shell */
2521 char *args, *allargs_copy;
2522 size_t args_len, allargs_len;
2523 int fd_inp = -1, fd_out = -1, fd_err = -1;
2524 HANDLE tty = INVALID_HANDLE_VALUE;
2525 bool redirected = false;
2532 #endif /* !__CYGWIN__ */
2533 const char *allargs = origallargs.c_str ();
2534 PROCESS_INFORMATION pi;
2537 const char *inferior_io_terminal = get_inferior_io_terminal ();
2540 error (_("No executable specified, use `target exec'."));
2542 const char *inferior_cwd = get_inferior_cwd ();
2543 std::string expanded_infcwd;
2544 if (inferior_cwd != NULL)
2546 expanded_infcwd = gdb_tilde_expand (inferior_cwd);
2547 /* Mirror slashes on inferior's cwd. */
2548 std::replace (expanded_infcwd.begin (), expanded_infcwd.end (),
2550 inferior_cwd = expanded_infcwd.c_str ();
2553 memset (&si, 0, sizeof (si));
2554 si.cb = sizeof (si);
2557 flags |= CREATE_NEW_PROCESS_GROUP;
2560 windows_set_console_info (&si, &flags);
2565 flags |= DEBUG_ONLY_THIS_PROCESS;
2566 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path,
2567 __PMAX * sizeof (cygwin_buf_t)) < 0)
2568 error (_("Error starting executable: %d"), errno);
2571 len = mbstowcs (NULL, allargs, 0) + 1;
2572 if (len == (size_t) -1)
2573 error (_("Error starting executable: %d"), errno);
2574 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
2575 mbstowcs (cygallargs, allargs, len);
2576 #else /* !__USEWIDE */
2577 cygallargs = allargs;
2583 if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0)
2584 error (_("Error starting executable via shell: %d"), errno);
2586 len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0)
2587 + mbstowcs (NULL, allargs, 0) + 2;
2588 cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
2589 swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs);
2590 #else /* !__USEWIDE */
2591 len = (sizeof (" -c 'exec '") + strlen (exec_file)
2592 + strlen (allargs) + 2);
2593 cygallargs = (char *) alloca (len);
2594 xsnprintf (cygallargs, len, " -c 'exec %s %s'", exec_file, allargs);
2595 #endif /* __USEWIDE */
2597 flags |= DEBUG_PROCESS;
2600 if (inferior_cwd != NULL
2601 && cygwin_conv_path (CCP_POSIX_TO_WIN_W, inferior_cwd,
2602 infcwd, strlen (inferior_cwd)) < 0)
2603 error (_("Error converting inferior cwd: %d"), errno);
2606 args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2)
2607 * sizeof (wchar_t));
2608 wcscpy (args, toexec);
2609 wcscat (args, L" ");
2610 wcscat (args, cygallargs);
2611 #else /* !__USEWIDE */
2612 args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2);
2613 strcpy (args, toexec);
2615 strcat (args, cygallargs);
2616 #endif /* !__USEWIDE */
2618 #ifdef CW_CVT_ENV_TO_WINENV
2619 /* First try to create a direct Win32 copy of the POSIX environment. */
2620 w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env);
2621 if (w32_env != (PWCHAR) -1)
2622 flags |= CREATE_UNICODE_ENVIRONMENT;
2624 /* If that fails, fall back to old method tweaking GDB's environment. */
2625 #endif /* CW_CVT_ENV_TO_WINENV */
2627 /* Reset all Win32 environment variables to avoid leftover on next run. */
2628 clear_win32_environment (environ);
2629 /* Prepare the environment vars for CreateProcess. */
2632 cygwin_internal (CW_SYNC_WINENV);
2636 if (!inferior_io_terminal)
2637 tty = ostdin = ostdout = ostderr = -1;
2640 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
2643 print_sys_errmsg (inferior_io_terminal, errno);
2644 ostdin = ostdout = ostderr = -1;
2657 windows_init_thread_list ();
2658 ret = CreateProcess (0,
2659 args, /* command line */
2660 NULL, /* Security */
2662 TRUE, /* inherit handles */
2663 flags, /* start flags */
2664 w32_env, /* environment */
2665 inferior_cwd != NULL ? infcwd : NULL, /* current
2670 /* Just free the Win32 environment, if it could be created. */
2674 /* Reset all environment variables to avoid leftover on next run. */
2675 clear_win32_environment (in_env);
2676 /* Restore normal GDB environment variables. */
2678 cygwin_internal (CW_SYNC_WINENV);
2691 #else /* !__CYGWIN__ */
2692 allargs_len = strlen (allargs);
2693 allargs_copy = strcpy ((char *) alloca (allargs_len + 1), allargs);
2694 if (strpbrk (allargs_copy, "<>") != NULL)
2699 redirect_inferior_handles (allargs, allargs_copy,
2700 &fd_inp, &fd_out, &fd_err);
2702 warning (_("Error in redirection: %s."), strerror (errno));
2705 allargs_len = strlen (allargs_copy);
2707 /* If not all the standard streams are redirected by the command
2708 line, use inferior_io_terminal for those which aren't. */
2709 if (inferior_io_terminal
2710 && !(fd_inp >= 0 && fd_out >= 0 && fd_err >= 0))
2712 SECURITY_ATTRIBUTES sa;
2713 sa.nLength = sizeof(sa);
2714 sa.lpSecurityDescriptor = 0;
2715 sa.bInheritHandle = TRUE;
2716 tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
2717 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
2718 if (tty == INVALID_HANDLE_VALUE)
2719 warning (_("Warning: Failed to open TTY %s, error %#x."),
2720 inferior_io_terminal, (unsigned) GetLastError ());
2722 if (redirected || tty != INVALID_HANDLE_VALUE)
2725 si.hStdInput = (HANDLE) _get_osfhandle (fd_inp);
2726 else if (tty != INVALID_HANDLE_VALUE)
2729 si.hStdInput = GetStdHandle (STD_INPUT_HANDLE);
2731 si.hStdOutput = (HANDLE) _get_osfhandle (fd_out);
2732 else if (tty != INVALID_HANDLE_VALUE)
2733 si.hStdOutput = tty;
2735 si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
2737 si.hStdError = (HANDLE) _get_osfhandle (fd_err);
2738 else if (tty != INVALID_HANDLE_VALUE)
2741 si.hStdError = GetStdHandle (STD_ERROR_HANDLE);
2742 si.dwFlags |= STARTF_USESTDHANDLES;
2746 /* Build the command line, a space-separated list of tokens where
2747 the first token is the name of the module to be executed.
2748 To avoid ambiguities introduced by spaces in the module name,
2750 args_len = strlen (toexec) + 2 /* quotes */ + allargs_len + 2;
2751 args = (char *) alloca (args_len);
2752 xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs_copy);
2754 flags |= DEBUG_ONLY_THIS_PROCESS;
2756 /* CreateProcess takes the environment list as a null terminated set of
2757 strings (i.e. two nulls terminate the list). */
2759 /* Get total size for env strings. */
2760 for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++)
2761 envlen += strlen (in_env[i]) + 1;
2763 envsize = sizeof (in_env[0]) * (i + 1);
2764 env = (char **) alloca (envsize);
2765 memcpy (env, in_env, envsize);
2766 /* Windows programs expect the environment block to be sorted. */
2767 qsort (env, i, sizeof (char *), envvar_cmp);
2769 w32env = (char *) alloca (envlen + 1);
2771 /* Copy env strings into new buffer. */
2772 for (temp = w32env, i = 0; env[i] && *env[i]; i++)
2774 strcpy (temp, env[i]);
2775 temp += strlen (temp) + 1;
2778 /* Final nil string to terminate new env. */
2781 windows_init_thread_list ();
2782 ret = CreateProcessA (0,
2783 args, /* command line */
2784 NULL, /* Security */
2786 TRUE, /* inherit handles */
2787 flags, /* start flags */
2788 w32env, /* environment */
2789 inferior_cwd, /* current directory */
2792 if (tty != INVALID_HANDLE_VALUE)
2800 #endif /* !__CYGWIN__ */
2803 error (_("Error creating process %s, (error %u)."),
2804 exec_file, (unsigned) GetLastError ());
2806 CloseHandle (pi.hThread);
2807 CloseHandle (pi.hProcess);
2809 if (useshell && shell[0] != '\0')
2814 do_initial_windows_stuff (this, pi.dwProcessId, 0);
2816 /* windows_continue (DBG_CONTINUE, -1, 0); */
2820 windows_nat_target::mourn_inferior ()
2822 (void) windows_continue (DBG_CONTINUE, -1, 0);
2823 x86_cleanup_dregs();
2824 if (open_process_used)
2826 CHECK (CloseHandle (current_process_handle));
2827 open_process_used = 0;
2829 inf_child_target::mourn_inferior ();
2832 /* Send a SIGINT to the process group. This acts just like the user typed a
2833 ^C on the controlling terminal. */
2836 windows_nat_target::interrupt ()
2838 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
2839 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
2840 registers_changed (); /* refresh register state */
2843 /* Helper for windows_xfer_partial that handles memory transfers.
2844 Arguments are like target_xfer_partial. */
2846 static enum target_xfer_status
2847 windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
2848 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
2852 DWORD lasterror = 0;
2854 if (writebuf != NULL)
2856 DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n",
2857 pulongest (len), core_addr_to_string (memaddr)));
2858 success = WriteProcessMemory (current_process_handle,
2859 (LPVOID) (uintptr_t) memaddr, writebuf,
2862 lasterror = GetLastError ();
2863 FlushInstructionCache (current_process_handle,
2864 (LPCVOID) (uintptr_t) memaddr, len);
2868 DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n",
2869 pulongest (len), core_addr_to_string (memaddr)));
2870 success = ReadProcessMemory (current_process_handle,
2871 (LPCVOID) (uintptr_t) memaddr, readbuf,
2874 lasterror = GetLastError ();
2876 *xfered_len = (ULONGEST) done;
2877 if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0)
2878 return TARGET_XFER_OK;
2880 return success ? TARGET_XFER_OK : TARGET_XFER_E_IO;
2884 windows_nat_target::kill ()
2886 CHECK (TerminateProcess (current_process_handle, 0));
2890 if (!windows_continue (DBG_CONTINUE, -1, 1))
2892 if (!WaitForDebugEvent (¤t_event, INFINITE))
2894 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
2898 target_mourn_inferior (inferior_ptid); /* Or just windows_mourn_inferior? */
2902 windows_nat_target::close ()
2904 DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
2905 inferior_ptid.pid ()));
2908 /* Convert pid to printable format. */
2910 windows_nat_target::pid_to_str (ptid_t ptid)
2912 static char buf[80];
2914 if (ptid.tid () != 0)
2916 snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
2917 ptid.pid (), ptid.tid ());
2921 return normal_pid_to_str (ptid);
2924 static enum target_xfer_status
2925 windows_xfer_shared_libraries (struct target_ops *ops,
2926 enum target_object object, const char *annex,
2927 gdb_byte *readbuf, const gdb_byte *writebuf,
2928 ULONGEST offset, ULONGEST len,
2929 ULONGEST *xfered_len)
2931 struct obstack obstack;
2937 return TARGET_XFER_E_IO;
2939 obstack_init (&obstack);
2940 obstack_grow_str (&obstack, "<library-list>\n");
2941 for (so = solib_start.next; so; so = so->next)
2943 lm_info_windows *li = (lm_info_windows *) so->lm_info;
2945 windows_xfer_shared_library (so->so_name, (CORE_ADDR)
2946 (uintptr_t) li->load_addr,
2947 target_gdbarch (), &obstack);
2949 obstack_grow_str0 (&obstack, "</library-list>\n");
2951 buf = (const char *) obstack_finish (&obstack);
2952 len_avail = strlen (buf);
2953 if (offset >= len_avail)
2957 if (len > len_avail - offset)
2958 len = len_avail - offset;
2959 memcpy (readbuf, buf + offset, len);
2962 obstack_free (&obstack, NULL);
2963 *xfered_len = (ULONGEST) len;
2964 return len != 0 ? TARGET_XFER_OK : TARGET_XFER_EOF;
2967 enum target_xfer_status
2968 windows_nat_target::xfer_partial (enum target_object object,
2969 const char *annex, gdb_byte *readbuf,
2970 const gdb_byte *writebuf, ULONGEST offset,
2971 ULONGEST len, ULONGEST *xfered_len)
2975 case TARGET_OBJECT_MEMORY:
2976 return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
2978 case TARGET_OBJECT_LIBRARIES:
2979 return windows_xfer_shared_libraries (this, object, annex, readbuf,
2980 writebuf, offset, len, xfered_len);
2983 if (beneath () == NULL)
2985 /* This can happen when requesting the transfer of unsupported
2986 objects before a program has been started (and therefore
2987 with the current_target having no target beneath). */
2988 return TARGET_XFER_E_IO;
2990 return beneath ()->xfer_partial (object, annex,
2991 readbuf, writebuf, offset, len,
2996 /* Provide thread local base, i.e. Thread Information Block address.
2997 Returns 1 if ptid is found and sets *ADDR to thread_local_base. */
3000 windows_nat_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr)
3002 windows_thread_info *th;
3004 th = thread_rec (ptid.tid (), 0);
3009 *addr = th->thread_local_base;
3015 windows_nat_target::get_ada_task_ptid (long lwp, long thread)
3017 return ptid_t (inferior_ptid.pid (), 0, lwp);
3020 /* Implementation of the to_thread_name method. */
3023 windows_nat_target::thread_name (struct thread_info *thr)
3025 return thread_rec (thr->ptid.tid (), 0)->name;
3030 _initialize_windows_nat (void)
3032 x86_dr_low.set_control = cygwin_set_dr7;
3033 x86_dr_low.set_addr = cygwin_set_dr;
3034 x86_dr_low.get_addr = cygwin_get_dr;
3035 x86_dr_low.get_status = cygwin_get_dr6;
3036 x86_dr_low.get_control = cygwin_get_dr7;
3038 /* x86_dr_low.debug_register_length field is set by
3039 calling x86_set_debug_register_length function
3040 in processor windows specific native file. */
3042 add_inf_child_target (&the_windows_nat_target);
3045 cygwin_internal (CW_SET_DOS_FILE_WARNING, 0);
3048 add_com ("signal-event", class_run, signal_event_command, _("\
3049 Signal a crashed process with event ID, to allow its debugging.\n\
3050 This command is needed in support of setting up GDB as JIT debugger on \
3051 MS-Windows. The command should be invoked from the GDB command line using \
3052 the '-ex' command-line option. The ID of the event that blocks the \
3053 crashed process will be supplied by the Windows JIT debugging mechanism."));
3056 add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
3057 Set use of shell to start subprocess."), _("\
3058 Show use of shell to start subprocess."), NULL,
3060 NULL, /* FIXME: i18n: */
3061 &setlist, &showlist);
3063 add_setshow_boolean_cmd ("cygwin-exceptions", class_support,
3064 &cygwin_exceptions, _("\
3065 Break when an exception is detected in the Cygwin DLL itself."), _("\
3066 Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
3068 NULL, /* FIXME: i18n: */
3069 &setlist, &showlist);
3072 add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
3073 Set creation of new console when creating child process."), _("\
3074 Show creation of new console when creating child process."), NULL,
3076 NULL, /* FIXME: i18n: */
3077 &setlist, &showlist);
3079 add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
3080 Set creation of new group when creating child process."), _("\
3081 Show creation of new group when creating child process."), NULL,
3083 NULL, /* FIXME: i18n: */
3084 &setlist, &showlist);
3086 add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
3087 Set whether to display execution in child process."), _("\
3088 Show whether to display execution in child process."), NULL,
3090 NULL, /* FIXME: i18n: */
3091 &setlist, &showlist);
3093 add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
3094 Set whether to display kernel events in child process."), _("\
3095 Show whether to display kernel events in child process."), NULL,
3097 NULL, /* FIXME: i18n: */
3098 &setlist, &showlist);
3100 add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
3101 Set whether to display memory accesses in child process."), _("\
3102 Show whether to display memory accesses in child process."), NULL,
3104 NULL, /* FIXME: i18n: */
3105 &setlist, &showlist);
3107 add_setshow_boolean_cmd ("debugexceptions", class_support,
3108 &debug_exceptions, _("\
3109 Set whether to display kernel exceptions in child process."), _("\
3110 Show whether to display kernel exceptions in child process."), NULL,
3112 NULL, /* FIXME: i18n: */
3113 &setlist, &showlist);
3115 init_w32_command_list ();
3117 add_cmd ("selector", class_info, display_selectors,
3118 _("Display selectors infos."),
3122 /* Hardware watchpoint support, adapted from go32-nat.c code. */
3124 /* Pass the address ADDR to the inferior in the I'th debug register.
3125 Here we just store the address in dr array, the registers will be
3126 actually set up when windows_continue is called. */
3128 cygwin_set_dr (int i, CORE_ADDR addr)
3131 internal_error (__FILE__, __LINE__,
3132 _("Invalid register %d in cygwin_set_dr.\n"), i);
3134 debug_registers_changed = 1;
3135 debug_registers_used = 1;
3138 /* Pass the value VAL to the inferior in the DR7 debug control
3139 register. Here we just store the address in D_REGS, the watchpoint
3140 will be actually set up in windows_wait. */
3142 cygwin_set_dr7 (unsigned long val)
3144 dr[7] = (CORE_ADDR) val;
3145 debug_registers_changed = 1;
3146 debug_registers_used = 1;
3149 /* Get the value of debug register I from the inferior. */
3152 cygwin_get_dr (int i)
3157 /* Get the value of the DR6 debug status register from the inferior.
3158 Here we just return the value stored in dr[6]
3159 by the last call to thread_rec for current_event.dwThreadId id. */
3160 static unsigned long
3161 cygwin_get_dr6 (void)
3163 return (unsigned long) dr[6];
3166 /* Get the value of the DR7 debug status register from the inferior.
3167 Here we just return the value stored in dr[7] by the last call to
3168 thread_rec for current_event.dwThreadId id. */
3170 static unsigned long
3171 cygwin_get_dr7 (void)
3173 return (unsigned long) dr[7];
3176 /* Determine if the thread referenced by "ptid" is alive
3177 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
3178 it means that the thread has died. Otherwise it is assumed to be alive. */
3181 windows_nat_target::thread_alive (ptid_t ptid)
3185 gdb_assert (ptid.tid () != 0);
3188 return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) != WAIT_OBJECT_0;
3192 _initialize_check_for_gdb_ini (void)
3195 if (inhibit_gdbinit)
3198 homedir = getenv ("HOME");
3202 char *oldini = (char *) alloca (strlen (homedir) +
3203 sizeof ("gdb.ini") + 1);
3204 strcpy (oldini, homedir);
3205 p = strchr (oldini, '\0');
3206 if (p > oldini && !IS_DIR_SEPARATOR (p[-1]))
3208 strcpy (p, "gdb.ini");
3209 if (access (oldini, 0) == 0)
3211 int len = strlen (oldini);
3212 char *newini = (char *) alloca (len + 2);
3214 xsnprintf (newini, len + 2, "%.*s.gdbinit",
3215 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
3216 warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
3221 /* Define dummy functions which always return error for the rare cases where
3222 these functions could not be found. */
3224 bad_DebugActiveProcessStop (DWORD w)
3229 bad_DebugBreakProcess (HANDLE w)
3234 bad_DebugSetProcessKillOnExit (BOOL w)
3239 bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
3246 bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z)
3252 bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
3259 bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
3265 bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
3271 bad_GetCurrentConsoleFont (HANDLE w, BOOL bMaxWindow, CONSOLE_FONT_INFO *f)
3277 bad_GetConsoleFontSize (HANDLE w, DWORD nFont)
3285 /* Load any functions which may not be available in ancient versions
3289 _initialize_loadable (void)
3293 #define GPA(m, func) \
3294 func = (func ## _ftype *) GetProcAddress (m, #func)
3296 hm = LoadLibrary ("kernel32.dll");
3299 GPA (hm, DebugActiveProcessStop);
3300 GPA (hm, DebugBreakProcess);
3301 GPA (hm, DebugSetProcessKillOnExit);
3302 GPA (hm, GetConsoleFontSize);
3303 GPA (hm, DebugActiveProcessStop);
3304 GPA (hm, GetCurrentConsoleFont);
3307 /* Set variables to dummy versions of these processes if the function
3308 wasn't found in kernel32.dll. */
3309 if (!DebugBreakProcess)
3310 DebugBreakProcess = bad_DebugBreakProcess;
3311 if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit)
3313 DebugActiveProcessStop = bad_DebugActiveProcessStop;
3314 DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
3316 if (!GetConsoleFontSize)
3317 GetConsoleFontSize = bad_GetConsoleFontSize;
3318 if (!GetCurrentConsoleFont)
3319 GetCurrentConsoleFont = bad_GetCurrentConsoleFont;
3321 /* Load optional functions used for retrieving filename information
3322 associated with the currently debugged process or its dlls. */
3323 hm = LoadLibrary ("psapi.dll");
3326 GPA (hm, EnumProcessModules);
3327 GPA (hm, GetModuleInformation);
3328 GetModuleFileNameEx = (GetModuleFileNameEx_ftype *)
3329 GetProcAddress (hm, GetModuleFileNameEx_name);
3332 if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
3334 /* Set variables to dummy versions of these processes if the function
3335 wasn't found in psapi.dll. */
3336 EnumProcessModules = bad_EnumProcessModules;
3337 GetModuleInformation = bad_GetModuleInformation;
3338 GetModuleFileNameEx = bad_GetModuleFileNameEx;
3339 /* This will probably fail on Windows 9x/Me. Let the user know
3340 that we're missing some functionality. */
3342 cannot automatically find executable file or library to read symbols.\n\
3343 Use \"file\" or \"dll\" command to load executable/libraries directly."));
3346 hm = LoadLibrary ("advapi32.dll");
3349 GPA (hm, OpenProcessToken);
3350 GPA (hm, LookupPrivilegeValueA);
3351 GPA (hm, AdjustTokenPrivileges);
3352 /* Only need to set one of these since if OpenProcessToken fails nothing
3354 if (!OpenProcessToken || !LookupPrivilegeValueA
3355 || !AdjustTokenPrivileges)
3356 OpenProcessToken = bad_OpenProcessToken;