1 /* Target-vector operations for controlling win32 child processes, for GDB.
3 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free
4 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 2 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 eve nthe 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, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
27 /* We assume we're being built with and will be used for cygwin. */
30 #include "tm.h" /* required for SSE registers */
31 #include "frame.h" /* required by inferior.h */
36 #include "completer.h"
39 #include "i386-tdep.h"
41 #include <sys/types.h>
46 #include <sys/cygwin.h>
51 #include "gdb_string.h"
52 #include "gdbthread.h"
54 #include <sys/param.h>
57 /* The ui's event loop. */
58 extern int (*ui_loop_hook) (int signo);
60 /* If we're not using the old Cygwin header file set, define the
61 following which never should have been in the generic Win32 API
62 headers in the first place since they were our own invention... */
63 #ifndef _GNU_H_WINDOWS_H
66 FLAG_TRACE_BIT = 0x100,
67 CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
70 #include <sys/procfs.h>
74 #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
75 | CONTEXT_EXTENDED_REGISTERS
77 #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS
80 static unsigned dr[8];
81 static int debug_registers_changed = 0;
82 static int debug_registers_used = 0;
84 /* The string sent by cygwin when it processes a signal.
85 FIXME: This should be in a cygwin include file. */
86 #define CYGWIN_SIGNAL_STRING "cygwin: signal"
88 #define CHECK(x) check (x, __FILE__,__LINE__)
89 #define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
90 #define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
91 #define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
92 #define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
94 /* Forward declaration */
95 extern struct target_ops child_ops;
97 static void child_stop (void);
98 static int win32_child_thread_alive (ptid_t);
99 void child_kill_inferior (void);
101 static enum target_signal last_sig = TARGET_SIGNAL_0;
102 /* Set if a signal was received from the debugged process */
104 /* Thread information structure used to track information that is
105 not available in gdb's thread structure. */
106 typedef struct thread_info_struct
108 struct thread_info_struct *next;
118 static thread_info thread_head;
120 /* The process and thread handles for the above context. */
122 static DEBUG_EVENT current_event; /* The current debug event from
124 static HANDLE current_process_handle; /* Currently executing process */
125 static thread_info *current_thread; /* Info on currently selected thread */
126 static DWORD main_thread_id; /* Thread ID of the main thread */
128 /* Counts of things. */
129 static int exception_count = 0;
130 static int event_count = 0;
131 static int saw_create;
134 static int new_console = 0;
135 static int new_group = 1;
136 static int debug_exec = 0; /* show execution */
137 static int debug_events = 0; /* show events from kernel */
138 static int debug_memory = 0; /* show target memory accesses */
139 static int debug_exceptions = 0; /* show target exceptions */
140 static int useshell = 0; /* use shell for subprocesses */
142 /* This vector maps GDB's idea of a register's number into an address
143 in the win32 exception context vector.
145 It also contains the bit mask needed to load the register in question.
147 One day we could read a reg, we could inspect the context we
148 already have loaded, if it doesn't have the bit set that we need,
149 we read that set of registers in using GetThreadContext. If the
150 context already contains what we need, we just unpack it. Then to
151 write a register, first we have to ensure that the context contains
152 the other regs of the group, and then we copy the info in and set
155 #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
156 static const int mappings[] =
158 context_offset (Eax),
159 context_offset (Ecx),
160 context_offset (Edx),
161 context_offset (Ebx),
162 context_offset (Esp),
163 context_offset (Ebp),
164 context_offset (Esi),
165 context_offset (Edi),
166 context_offset (Eip),
167 context_offset (EFlags),
168 context_offset (SegCs),
169 context_offset (SegSs),
170 context_offset (SegDs),
171 context_offset (SegEs),
172 context_offset (SegFs),
173 context_offset (SegGs),
174 context_offset (FloatSave.RegisterArea[0 * 10]),
175 context_offset (FloatSave.RegisterArea[1 * 10]),
176 context_offset (FloatSave.RegisterArea[2 * 10]),
177 context_offset (FloatSave.RegisterArea[3 * 10]),
178 context_offset (FloatSave.RegisterArea[4 * 10]),
179 context_offset (FloatSave.RegisterArea[5 * 10]),
180 context_offset (FloatSave.RegisterArea[6 * 10]),
181 context_offset (FloatSave.RegisterArea[7 * 10]),
182 context_offset (FloatSave.ControlWord),
183 context_offset (FloatSave.StatusWord),
184 context_offset (FloatSave.TagWord),
185 context_offset (FloatSave.ErrorSelector),
186 context_offset (FloatSave.ErrorOffset),
187 context_offset (FloatSave.DataSelector),
188 context_offset (FloatSave.DataOffset),
189 context_offset (FloatSave.ErrorSelector)
192 context_offset (ExtendedRegisters[10*16]),
193 context_offset (ExtendedRegisters[11*16]),
194 context_offset (ExtendedRegisters[12*16]),
195 context_offset (ExtendedRegisters[13*16]),
196 context_offset (ExtendedRegisters[14*16]),
197 context_offset (ExtendedRegisters[15*16]),
198 context_offset (ExtendedRegisters[16*16]),
199 context_offset (ExtendedRegisters[17*16]),
201 context_offset (ExtendedRegisters[24])
205 #undef context_offset
207 /* This vector maps the target's idea of an exception (extracted
208 from the DEBUG_EVENT structure) to GDB's idea. */
210 struct xlate_exception
213 enum target_signal us;
216 static const struct xlate_exception
219 {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
220 {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
221 {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
222 {DBG_CONTROL_C, TARGET_SIGNAL_INT},
223 {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
224 {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
228 check (BOOL ok, const char *file, int line)
231 printf_filtered ("error return %s:%d was %lu\n", file, line,
236 /* Find a thread record given a thread id.
237 If get_context then also retrieve the context for this
240 thread_rec (DWORD id, int get_context)
244 for (th = &thread_head; (th = th->next) != NULL;)
247 if (!th->suspend_count && get_context)
249 if (get_context > 0 && id != current_event.dwThreadId)
250 th->suspend_count = SuspendThread (th->h) + 1;
251 else if (get_context < 0)
252 th->suspend_count = -1;
254 th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
255 GetThreadContext (th->h, &th->context);
256 if (id == current_event.dwThreadId)
258 /* Copy dr values from that thread. */
259 dr[0] = th->context.Dr0;
260 dr[1] = th->context.Dr1;
261 dr[2] = th->context.Dr2;
262 dr[3] = th->context.Dr3;
263 dr[6] = th->context.Dr6;
264 dr[7] = th->context.Dr7;
273 /* Add a thread to the thread list */
275 child_add_thread (DWORD id, HANDLE h)
279 if ((th = thread_rec (id, FALSE)))
282 th = (thread_info *) xmalloc (sizeof (*th));
283 memset (th, 0, sizeof (*th));
286 th->next = thread_head.next;
287 thread_head.next = th;
288 add_thread (pid_to_ptid (id));
289 /* Set the debug registers for the new thread in they are used. */
290 if (debug_registers_used)
292 /* Only change the value of the debug registers. */
293 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
294 CHECK (GetThreadContext (th->h, &th->context));
295 th->context.Dr0 = dr[0];
296 th->context.Dr1 = dr[1];
297 th->context.Dr2 = dr[2];
298 th->context.Dr3 = dr[3];
299 /* th->context.Dr6 = dr[6];
300 FIXME: should we set dr6 also ?? */
301 th->context.Dr7 = dr[7];
302 CHECK (SetThreadContext (th->h, &th->context));
303 th->context.ContextFlags = 0;
308 /* Clear out any old thread list and reintialize it to a
311 child_init_thread_list (void)
313 thread_info *th = &thread_head;
315 DEBUG_EVENTS (("gdb: child_init_thread_list\n"));
317 while (th->next != NULL)
319 thread_info *here = th->next;
320 th->next = here->next;
321 (void) CloseHandle (here->h);
326 /* Delete a thread from the list of threads */
328 child_delete_thread (DWORD id)
333 printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
334 delete_thread (pid_to_ptid (id));
336 for (th = &thread_head;
337 th->next != NULL && th->next->id != id;
341 if (th->next != NULL)
343 thread_info *here = th->next;
344 th->next = here->next;
345 CloseHandle (here->h);
351 do_child_fetch_inferior_registers (int r)
353 char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
357 l = *((long *) context_offset) & 0xffff;
358 supply_register (r, (char *) &l);
360 else if (r == FOP_REGNUM)
362 l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
363 supply_register (r, (char *) &l);
366 supply_register (r, context_offset);
369 for (r = 0; r < NUM_REGS; r++)
370 do_child_fetch_inferior_registers (r);
375 child_fetch_inferior_registers (int r)
377 current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
378 do_child_fetch_inferior_registers (r);
382 do_child_store_inferior_registers (int r)
385 regcache_collect (r, ((char *) ¤t_thread->context) + mappings[r]);
388 for (r = 0; r < NUM_REGS; r++)
389 do_child_store_inferior_registers (r);
393 /* Store a new register value into the current thread context */
395 child_store_inferior_registers (int r)
397 current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
398 do_child_store_inferior_registers (r);
401 static int psapi_loaded = 0;
402 static HMODULE psapi_module_handle = NULL;
403 static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
404 static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
405 static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
408 psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
414 HMODULE *DllHandle = dh_buf;
419 psapi_EnumProcessModules == NULL ||
420 psapi_GetModuleInformation == NULL ||
421 psapi_GetModuleFileNameExA == NULL)
426 psapi_module_handle = LoadLibrary ("psapi.dll");
427 if (!psapi_module_handle)
429 /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
432 psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
433 psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
434 psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
435 "GetModuleFileNameExA");
436 if (psapi_EnumProcessModules == NULL ||
437 psapi_GetModuleInformation == NULL ||
438 psapi_GetModuleFileNameExA == NULL)
443 ok = (*psapi_EnumProcessModules) (current_process_handle,
448 if (!ok || !cbNeeded)
451 DllHandle = (HMODULE *) alloca (cbNeeded);
455 ok = (*psapi_EnumProcessModules) (current_process_handle,
462 for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
464 if (!(*psapi_GetModuleInformation) (current_process_handle,
468 error ("Can't get module info");
470 len = (*psapi_GetModuleFileNameExA) (current_process_handle,
475 error ("Error getting dll name: %u\n", (unsigned) GetLastError ());
477 if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
482 dll_name_ret[0] = '\0';
486 /* Encapsulate the information required in a call to
487 symbol_file_add_args */
488 struct safe_symbol_file_add_args
492 struct section_addr_info *addrs;
495 struct ui_file *err, *out;
499 /* Maintain a linked list of "so" information. */
502 struct so_stuff *next;
506 struct objfile *objfile;
508 } solib_start, *solib_end;
510 /* Call symbol_file_add with stderr redirected. We don't care if there
513 safe_symbol_file_add_stub (void *argv)
515 #define p ((struct safe_symbol_file_add_args *)argv)
516 struct so_stuff *so = &solib_start;
518 while ((so = so->next))
519 if (so->loaded && strcasecmp (so->name, p->name) == 0)
521 p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
526 /* Restore gdb's stderr after calling symbol_file_add */
528 safe_symbol_file_add_cleanup (void *p)
530 #define sp ((struct safe_symbol_file_add_args *)p)
531 gdb_flush (gdb_stderr);
532 gdb_flush (gdb_stdout);
533 ui_file_delete (gdb_stderr);
534 ui_file_delete (gdb_stdout);
535 gdb_stderr = sp->err;
536 gdb_stdout = sp->out;
540 /* symbol_file_add wrapper that prevents errors from being displayed. */
541 static struct objfile *
542 safe_symbol_file_add (char *name, int from_tty,
543 struct section_addr_info *addrs,
544 int mainline, int flags)
546 struct safe_symbol_file_add_args p;
547 struct cleanup *cleanup;
549 cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
553 gdb_flush (gdb_stderr);
554 gdb_flush (gdb_stdout);
555 gdb_stderr = ui_file_new ();
556 gdb_stdout = ui_file_new ();
558 p.from_tty = from_tty;
560 p.mainline = mainline;
562 catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
564 do_cleanups (cleanup);
568 /* Remember the maximum DLL length for printing in info dll command. */
569 int max_dll_name_len;
572 register_loaded_dll (const char *name, DWORD load_addr)
575 char ppath[MAX_PATH + 1];
576 char buf[MAX_PATH + 1];
577 char cwd[MAX_PATH + 1];
579 WIN32_FIND_DATA w32_fd;
580 HANDLE h = FindFirstFile(name, &w32_fd);
581 MEMORY_BASIC_INFORMATION m;
584 if (h == INVALID_HANDLE_VALUE)
590 if (GetCurrentDirectory (MAX_PATH + 1, cwd))
592 p = strrchr (buf, '\\');
595 SetCurrentDirectory (buf);
596 GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
597 SetCurrentDirectory (cwd);
601 cygwin_conv_to_posix_path (buf, ppath);
602 so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1);
604 so->load_addr = load_addr;
605 if (VirtualQueryEx (current_process_handle, (void *) load_addr, &m,
607 so->end_addr = (DWORD) m.AllocationBase + m.RegionSize;
609 so->end_addr = load_addr + 0x2000; /* completely arbitrary */
613 strcpy (so->name, ppath);
615 solib_end->next = so;
617 len = strlen (ppath);
618 if (len > max_dll_name_len)
619 max_dll_name_len = len;
623 get_image_name (HANDLE h, void *address, int unicode)
625 static char buf[(2 * MAX_PATH) + 1];
626 DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
632 /* Attempt to read the name of the dll that was detected.
633 This is documented to work only when actively debugging
634 a program. It will not work for attached processes. */
638 /* See if we could read the address of a string, and that the
639 address isn't null. */
640 if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
641 || done != sizeof (address_ptr) || !address_ptr)
644 /* Find the length of the string */
645 while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
646 && (b[0] != 0 || b[size - 1] != 0) && done == size)
650 ReadProcessMemory (h, address_ptr, buf, len, &done);
653 WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
654 ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
657 WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
663 /* Wait for child to do something. Return pid of child, or -1 in case
664 of error; store status through argument pointer OURSTATUS. */
666 handle_load_dll (void *dummy)
668 LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
669 char dll_buf[MAX_PATH + 1];
670 char *dll_name = NULL;
673 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
675 if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
676 dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
680 if (*dll_name == '\0')
681 dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode);
685 register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000);
691 handle_unload_dll (void *dummy)
693 DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000;
696 for (so = &solib_start; so->next != NULL; so = so->next)
697 if (so->next->load_addr == lpBaseOfDll)
699 struct so_stuff *sodel = so->next;
700 so->next = sodel->next;
704 free_objfile (sodel->objfile);
708 error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll);
714 solib_address (CORE_ADDR address)
717 for (so = &solib_start; so->next != NULL; so = so->next)
718 if (address >= so->load_addr && address <= so->end_addr)
723 /* Return name of last loaded DLL. */
725 child_solib_loaded_library_pathname (int pid)
727 return !solib_end || !solib_end->name[0] ? NULL : solib_end->name;
730 /* Clear list of loaded DLLs. */
732 child_clear_solibs (void)
734 struct so_stuff *so, *so1 = solib_start.next;
736 while ((so = so1) != NULL)
742 solib_start.next = NULL;
743 solib_start.objfile = NULL;
744 solib_end = &solib_start;
745 max_dll_name_len = sizeof ("DLL Name") - 1;
748 /* Get the loaded address of all sections, given that .text was loaded
749 at text_load. Assumes that all sections are subject to the same
750 relocation offset. Returns NULL if problems occur or if the
751 sections were not relocated. */
753 static struct section_addr_info *
754 get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
756 struct section_addr_info *result = NULL;
757 int section_count = bfd_count_sections (abfd);
758 asection *text_section = bfd_get_section_by_name (abfd, ".text");
763 /* Couldn't get the .text section. Weird. */
766 else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
768 /* DLL wasn't relocated. */
773 /* Figure out all sections' loaded addresses. The offset here is
774 such that taking a bfd_get_section_vma() result and adding
775 offset will give the real load address of the section. */
777 CORE_ADDR offset = text_load - text_vma;
779 struct section_table *table_start = NULL;
780 struct section_table *table_end = NULL;
781 struct section_table *iter = NULL;
783 build_section_table (abfd, &table_start, &table_end);
785 for (iter = table_start; iter < table_end; ++iter)
787 /* Relocated addresses. */
788 iter->addr += offset;
789 iter->endaddr += offset;
792 result = build_section_addr_info_from_section_table (table_start,
801 /* Add DLL symbol information. */
802 static struct objfile *
803 solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
805 struct section_addr_info *addrs = NULL;
806 static struct objfile *result = NULL;
809 /* The symbols in a dll are offset by 0x1000, which is the
810 the offset from 0 of the first byte in an image - because
811 of the file header and the section alignment. */
813 if (!name || !name[0])
816 abfd = bfd_openr (name, "pei-i386");
820 /* pei failed - try pe */
821 abfd = bfd_openr (name, "pe-i386");
826 if (bfd_check_format (abfd, bfd_object))
828 addrs = get_relocated_section_addrs (abfd, load_addr);
836 result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
837 free_section_addr_info (addrs);
841 /* Fallback on handling just the .text section. */
842 struct cleanup *my_cleanups;
844 addrs = alloc_section_addr_info (1);
845 my_cleanups = make_cleanup (xfree, addrs);
846 addrs->other[0].name = ".text";
847 addrs->other[0].addr = load_addr;
849 result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
850 do_cleanups (my_cleanups);
856 /* Load DLL symbol info. */
858 dll_symbol_command (char *args, int from_tty)
864 error ("dll-symbols requires a file name");
867 if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
869 char *newargs = (char *) alloca (n + 4 + 1);
870 strcpy (newargs, args);
871 strcat (newargs, ".dll");
875 safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
878 /* List currently loaded DLLs. */
880 info_dll_command (char *ignore, int from_tty)
882 struct so_stuff *so = &solib_start;
887 printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name");
888 while ((so = so->next) != NULL)
889 printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr);
894 /* Handle DEBUG_STRING output from child process.
895 Cygwin prepends its messages with a "cygwin:". Interpret this as
896 a Cygwin signal. Otherwise just print the string as a warning. */
898 handle_output_debug_string (struct target_waitstatus *ourstatus)
903 if (!target_read_string
904 ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
908 if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0)
910 if (strncmp (s, "cYg", 3) != 0)
916 int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0);
917 gotasig = target_signal_from_host (sig);
918 ourstatus->value.sig = gotasig;
920 ourstatus->kind = TARGET_WAITKIND_STOPPED;
928 display_selector (HANDLE thread, DWORD sel)
931 if (GetThreadSelectorEntry (thread, sel, &info))
934 printf_filtered ("0x%03lx: ", sel);
935 if (!info.HighWord.Bits.Pres)
937 puts_filtered ("Segment not present\n");
940 base = (info.HighWord.Bits.BaseHi << 24) +
941 (info.HighWord.Bits.BaseMid << 16)
943 limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
944 if (info.HighWord.Bits.Granularity)
945 limit = (limit << 12) | 0xfff;
946 printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
947 if (info.HighWord.Bits.Default_Big)
948 puts_filtered(" 32-bit ");
950 puts_filtered(" 16-bit ");
951 switch ((info.HighWord.Bits.Type & 0xf) >> 1)
954 puts_filtered ("Data (Read-Only, Exp-up");
957 puts_filtered ("Data (Read/Write, Exp-up");
960 puts_filtered ("Unused segment (");
963 puts_filtered ("Data (Read/Write, Exp-down");
966 puts_filtered ("Code (Exec-Only, N.Conf");
969 puts_filtered ("Code (Exec/Read, N.Conf");
972 puts_filtered ("Code (Exec-Only, Conf");
975 puts_filtered ("Code (Exec/Read, Conf");
978 printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
980 if ((info.HighWord.Bits.Type & 0x1) == 0)
981 puts_filtered(", N.Acc");
982 puts_filtered (")\n");
983 if ((info.HighWord.Bits.Type & 0x10) == 0)
984 puts_filtered("System selector ");
985 printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
986 if (info.HighWord.Bits.Granularity)
987 puts_filtered ("Page granular.\n");
989 puts_filtered ("Byte granular.\n");
994 printf_filtered ("Invalid selector 0x%lx.\n",sel);
1000 display_selectors (char * args, int from_tty)
1002 if (!current_thread)
1004 puts_filtered ("Impossible to display selectors now.\n");
1010 puts_filtered ("Selector $cs\n");
1011 display_selector (current_thread->h,
1012 current_thread->context.SegCs);
1013 puts_filtered ("Selector $ds\n");
1014 display_selector (current_thread->h,
1015 current_thread->context.SegDs);
1016 puts_filtered ("Selector $es\n");
1017 display_selector (current_thread->h,
1018 current_thread->context.SegEs);
1019 puts_filtered ("Selector $ss\n");
1020 display_selector (current_thread->h,
1021 current_thread->context.SegSs);
1022 puts_filtered ("Selector $fs\n");
1023 display_selector (current_thread->h,
1024 current_thread->context.SegFs);
1025 puts_filtered ("Selector $gs\n");
1026 display_selector (current_thread->h,
1027 current_thread->context.SegGs);
1032 sel = parse_and_eval_long (args);
1033 printf_filtered ("Selector \"%s\"\n",args);
1034 display_selector (current_thread->h, sel);
1038 static struct cmd_list_element *info_w32_cmdlist = NULL;
1041 info_w32_command (char *args, int from_tty)
1043 help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
1047 #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
1048 printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
1049 (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
1052 handle_exception (struct target_waitstatus *ourstatus)
1055 DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
1057 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1059 /* Record the context of the current thread */
1060 th = thread_rec (current_event.dwThreadId, -1);
1064 case EXCEPTION_ACCESS_VIOLATION:
1065 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
1066 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1068 case STATUS_STACK_OVERFLOW:
1069 DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
1070 ourstatus->value.sig = TARGET_SIGNAL_SEGV;
1072 case STATUS_FLOAT_DENORMAL_OPERAND:
1073 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
1074 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1076 case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
1077 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
1078 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1080 case STATUS_FLOAT_INEXACT_RESULT:
1081 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
1082 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1084 case STATUS_FLOAT_INVALID_OPERATION:
1085 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
1086 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1088 case STATUS_FLOAT_OVERFLOW:
1089 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
1090 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1092 case STATUS_FLOAT_STACK_CHECK:
1093 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
1094 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1096 case STATUS_FLOAT_UNDERFLOW:
1097 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
1098 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1100 case STATUS_FLOAT_DIVIDE_BY_ZERO:
1101 DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
1102 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1104 case STATUS_INTEGER_DIVIDE_BY_ZERO:
1105 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
1106 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1108 case STATUS_INTEGER_OVERFLOW:
1109 DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
1110 ourstatus->value.sig = TARGET_SIGNAL_FPE;
1112 case EXCEPTION_BREAKPOINT:
1113 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
1114 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1117 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
1118 ourstatus->value.sig = TARGET_SIGNAL_INT;
1120 case DBG_CONTROL_BREAK:
1121 DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
1122 ourstatus->value.sig = TARGET_SIGNAL_INT;
1124 case EXCEPTION_SINGLE_STEP:
1125 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
1126 ourstatus->value.sig = TARGET_SIGNAL_TRAP;
1128 case EXCEPTION_ILLEGAL_INSTRUCTION:
1129 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
1130 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1132 case EXCEPTION_PRIV_INSTRUCTION:
1133 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
1134 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1136 case EXCEPTION_NONCONTINUABLE_EXCEPTION:
1137 DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
1138 ourstatus->value.sig = TARGET_SIGNAL_ILL;
1141 if (current_event.u.Exception.dwFirstChance)
1143 printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
1144 current_event.u.Exception.ExceptionRecord.ExceptionCode,
1145 (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
1146 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
1150 last_sig = ourstatus->value.sig;
1154 /* Resume all artificially suspended threads if we are continuing
1157 child_continue (DWORD continue_status, int id)
1163 DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
1164 current_event.dwProcessId, current_event.dwThreadId,
1165 continue_status == DBG_CONTINUE ?
1166 "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
1167 res = ContinueDebugEvent (current_event.dwProcessId,
1168 current_event.dwThreadId,
1170 continue_status = 0;
1172 for (th = &thread_head; (th = th->next) != NULL;)
1173 if (((id == -1) || (id == (int) th->id)) && th->suspend_count)
1176 for (i = 0; i < th->suspend_count; i++)
1177 (void) ResumeThread (th->h);
1178 th->suspend_count = 0;
1179 if (debug_registers_changed)
1181 /* Only change the value of the debug reisters */
1182 th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
1183 th->context.Dr0 = dr[0];
1184 th->context.Dr1 = dr[1];
1185 th->context.Dr2 = dr[2];
1186 th->context.Dr3 = dr[3];
1187 /* th->context.Dr6 = dr[6];
1188 FIXME: should we set dr6 also ?? */
1189 th->context.Dr7 = dr[7];
1190 CHECK (SetThreadContext (th->h, &th->context));
1191 th->context.ContextFlags = 0;
1195 debug_registers_changed = 0;
1199 /* Get the next event from the child. Return 1 if the event requires
1200 handling by WFI (or whatever).
1203 get_child_debug_event (int pid, struct target_waitstatus *ourstatus)
1206 DWORD continue_status, event_code;
1207 thread_info *th = NULL;
1208 static thread_info dummy_thread_info;
1211 last_sig = TARGET_SIGNAL_0;
1213 if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
1217 continue_status = DBG_CONTINUE;
1219 event_code = current_event.dwDebugEventCode;
1220 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
1224 case CREATE_THREAD_DEBUG_EVENT:
1225 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
1226 (unsigned) current_event.dwProcessId,
1227 (unsigned) current_event.dwThreadId,
1228 "CREATE_THREAD_DEBUG_EVENT"));
1229 if (saw_create != 1)
1231 /* Record the existence of this thread */
1232 th = child_add_thread (current_event.dwThreadId,
1233 current_event.u.CreateThread.hThread);
1235 printf_unfiltered ("[New %s]\n",
1237 pid_to_ptid (current_event.dwThreadId)));
1238 retval = current_event.dwThreadId;
1241 case EXIT_THREAD_DEBUG_EVENT:
1242 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1243 (unsigned) current_event.dwProcessId,
1244 (unsigned) current_event.dwThreadId,
1245 "EXIT_THREAD_DEBUG_EVENT"));
1246 if (saw_create != 1)
1248 child_delete_thread (current_event.dwThreadId);
1249 th = &dummy_thread_info;
1252 case CREATE_PROCESS_DEBUG_EVENT:
1253 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1254 (unsigned) current_event.dwProcessId,
1255 (unsigned) current_event.dwThreadId,
1256 "CREATE_PROCESS_DEBUG_EVENT"));
1257 CloseHandle (current_event.u.CreateProcessInfo.hFile);
1258 if (++saw_create != 1)
1260 CloseHandle (current_event.u.CreateProcessInfo.hProcess);
1264 current_process_handle = current_event.u.CreateProcessInfo.hProcess;
1265 main_thread_id = current_event.dwThreadId;
1266 /* Add the main thread */
1268 th = child_add_thread (current_event.dwProcessId,
1269 current_event.u.CreateProcessInfo.hProcess);
1271 th = child_add_thread (main_thread_id,
1272 current_event.u.CreateProcessInfo.hThread);
1273 retval = ourstatus->value.related_pid = current_event.dwThreadId;
1276 case EXIT_PROCESS_DEBUG_EVENT:
1277 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1278 (unsigned) current_event.dwProcessId,
1279 (unsigned) current_event.dwThreadId,
1280 "EXIT_PROCESS_DEBUG_EVENT"));
1281 if (saw_create != 1)
1283 ourstatus->kind = TARGET_WAITKIND_EXITED;
1284 ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
1285 CloseHandle (current_process_handle);
1286 retval = main_thread_id;
1289 case LOAD_DLL_DEBUG_EVENT:
1290 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1291 (unsigned) current_event.dwProcessId,
1292 (unsigned) current_event.dwThreadId,
1293 "LOAD_DLL_DEBUG_EVENT"));
1294 CloseHandle (current_event.u.LoadDll.hFile);
1295 if (saw_create != 1)
1297 catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
1298 registers_changed (); /* mark all regs invalid */
1299 ourstatus->kind = TARGET_WAITKIND_LOADED;
1300 ourstatus->value.integer = 0;
1301 retval = main_thread_id;
1302 re_enable_breakpoints_in_shlibs ();
1305 case UNLOAD_DLL_DEBUG_EVENT:
1306 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1307 (unsigned) current_event.dwProcessId,
1308 (unsigned) current_event.dwThreadId,
1309 "UNLOAD_DLL_DEBUG_EVENT"));
1310 if (saw_create != 1)
1312 catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
1313 registers_changed (); /* mark all regs invalid */
1314 /* ourstatus->kind = TARGET_WAITKIND_UNLOADED;
1315 does not exist yet. */
1318 case EXCEPTION_DEBUG_EVENT:
1319 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1320 (unsigned) current_event.dwProcessId,
1321 (unsigned) current_event.dwThreadId,
1322 "EXCEPTION_DEBUG_EVENT"));
1323 if (saw_create != 1)
1325 if (handle_exception (ourstatus))
1326 retval = current_event.dwThreadId;
1329 case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
1330 DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
1331 (unsigned) current_event.dwProcessId,
1332 (unsigned) current_event.dwThreadId,
1333 "OUTPUT_DEBUG_STRING_EVENT"));
1334 if (saw_create != 1)
1336 if (handle_output_debug_string (ourstatus))
1337 retval = main_thread_id;
1341 if (saw_create != 1)
1343 printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
1344 (DWORD) current_event.dwProcessId,
1345 (DWORD) current_event.dwThreadId);
1346 printf_unfiltered (" unknown event code %ld\n",
1347 current_event.dwDebugEventCode);
1351 if (!retval || saw_create != 1)
1352 CHECK (child_continue (continue_status, -1));
1355 current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE);
1356 inferior_ptid = pid_to_ptid (retval);
1363 /* Wait for interesting events to occur in the target process. */
1365 child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
1367 int pid = PIDGET (ptid);
1369 /* We loop when we get a non-standard exception rather than return
1370 with a SPURIOUS because resume can try and step or modify things,
1371 which needs a current_thread->h. But some of these exceptions mark
1372 the birth or death of threads, which mean that the current thread
1373 isn't necessarily what you think it is. */
1377 int retval = get_child_debug_event (pid, ourstatus);
1379 return pid_to_ptid (retval);
1384 if (ui_loop_hook != NULL)
1385 detach = ui_loop_hook (0);
1388 child_kill_inferior ();
1394 do_initial_child_stuff (DWORD pid)
1396 extern int stop_after_trap;
1399 last_sig = TARGET_SIGNAL_0;
1401 exception_count = 0;
1402 debug_registers_changed = 0;
1403 debug_registers_used = 0;
1404 for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
1406 current_event.dwProcessId = pid;
1407 memset (¤t_event, 0, sizeof (current_event));
1408 push_target (&child_ops);
1409 child_init_thread_list ();
1410 disable_breakpoints_in_shlibs (1);
1411 child_clear_solibs ();
1412 clear_proceed_status ();
1413 init_wait_for_inferior ();
1415 target_terminal_init ();
1416 target_terminal_inferior ();
1420 stop_after_trap = 1;
1421 wait_for_inferior ();
1422 if (stop_signal != TARGET_SIGNAL_TRAP)
1423 resume (0, stop_signal);
1427 stop_after_trap = 0;
1431 /* Since Windows XP, detaching from a process is supported by Windows.
1432 The following code tries loading the appropriate functions dynamically.
1433 If loading these functions succeeds use them to actually detach from
1434 the inferior process, otherwise behave as usual, pretending that
1435 detach has worked. */
1436 static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
1437 static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
1440 has_detach_ability (void)
1442 static HMODULE kernel32 = NULL;
1445 kernel32 = LoadLibrary ("kernel32.dll");
1448 if (!DebugSetProcessKillOnExit)
1449 DebugSetProcessKillOnExit = GetProcAddress (kernel32,
1450 "DebugSetProcessKillOnExit");
1451 if (!DebugActiveProcessStop)
1452 DebugActiveProcessStop = GetProcAddress (kernel32,
1453 "DebugActiveProcessStop");
1454 if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
1460 /* Try to set or remove a user privilege to the current process. Return -1
1461 if that fails, the previous setting of that privilege otherwise.
1463 This code is copied from the Cygwin source code and rearranged to allow
1464 dynamically loading of the needed symbols from advapi32 which is only
1465 available on NT/2K/XP. */
1467 set_process_privilege (const char *privilege, BOOL enable)
1469 static HMODULE advapi32 = NULL;
1470 static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
1471 static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID);
1472 static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
1473 DWORD, PTOKEN_PRIVILEGES, PDWORD);
1475 HANDLE token_hdl = NULL;
1477 TOKEN_PRIVILEGES new_priv, orig_priv;
1481 if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */
1486 if (!(advapi32 = LoadLibrary ("advapi32.dll")))
1488 if (!OpenProcessToken)
1489 OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
1490 if (!LookupPrivilegeValue)
1491 LookupPrivilegeValue = GetProcAddress (advapi32,
1492 "LookupPrivilegeValueA");
1493 if (!AdjustTokenPrivileges)
1494 AdjustTokenPrivileges = GetProcAddress (advapi32,
1495 "AdjustTokenPrivileges");
1496 if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
1503 if (!OpenProcessToken (GetCurrentProcess (),
1504 TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
1508 if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
1511 new_priv.PrivilegeCount = 1;
1512 new_priv.Privileges[0].Luid = restore_priv;
1513 new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
1515 if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
1516 sizeof orig_priv, &orig_priv, &size))
1519 /* Disabled, otherwise every `attach' in an unprivileged user session
1520 would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
1522 /* AdjustTokenPrivileges returns TRUE even if the privilege could not
1523 be enabled. GetLastError () returns an correct error code, though. */
1524 if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
1528 ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
1532 CloseHandle (token_hdl);
1537 /* Attach to process PID, then initialize for debugging it. */
1539 child_attach (char *args, int from_tty)
1545 error_no_arg ("process-id to attach");
1547 if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
1549 printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
1550 printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
1553 pid = strtoul (args, 0, 0); /* Windows pid */
1555 ok = DebugActiveProcess (pid);
1560 /* Try fall back to Cygwin pid */
1561 pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
1564 ok = DebugActiveProcess (pid);
1567 error ("Can't attach to process.");
1570 if (has_detach_ability ())
1573 DebugSetProcessKillOnExit (FALSE);
1578 char *exec_file = (char *) get_exec_file (0);
1581 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
1582 target_pid_to_str (pid_to_ptid (pid)));
1584 printf_unfiltered ("Attaching to %s\n",
1585 target_pid_to_str (pid_to_ptid (pid)));
1587 gdb_flush (gdb_stdout);
1590 do_initial_child_stuff (pid);
1591 target_terminal_ours ();
1595 child_detach (char *args, int from_tty)
1599 if (has_detach_ability ())
1601 delete_command (NULL, 0);
1602 child_continue (DBG_CONTINUE, -1);
1603 if (!DebugActiveProcessStop (current_event.dwProcessId))
1605 error ("Can't detach process %lu (error %lu)",
1606 current_event.dwProcessId, GetLastError ());
1609 DebugSetProcessKillOnExit (FALSE);
1611 if (detached && from_tty)
1613 char *exec_file = get_exec_file (0);
1616 printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
1617 current_event.dwProcessId);
1618 gdb_flush (gdb_stdout);
1620 inferior_ptid = null_ptid;
1621 unpush_target (&child_ops);
1624 /* Print status information about what we're accessing. */
1627 child_files_info (struct target_ops *ignore)
1629 printf_unfiltered ("\tUsing the running image of %s %s.\n",
1630 attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
1635 child_open (char *arg, int from_tty)
1637 error ("Use the \"run\" command to start a Unix child process.");
1640 /* Start an inferior win32 child process and sets inferior_ptid to its pid.
1641 EXEC_FILE is the file to run.
1642 ALLARGS is a string containing the arguments to the program.
1643 ENV is the environment vector to pass. Errors reported with error(). */
1646 child_create_inferior (char *exec_file, char *allargs, char **env)
1653 PROCESS_INFORMATION pi;
1657 char real_path[MAXPATHLEN];
1659 char shell[MAX_PATH + 1]; /* Path to shell */
1662 int ostdin, ostdout, ostderr;
1665 error ("No executable specified, use `target exec'.\n");
1667 memset (&si, 0, sizeof (si));
1668 si.cb = sizeof (si);
1672 flags = DEBUG_ONLY_THIS_PROCESS;
1673 cygwin_conv_to_win32_path (exec_file, real_path);
1679 sh = getenv ("SHELL");
1682 cygwin_conv_to_win32_path (sh, shell);
1683 newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
1684 + strlen (allargs) + 2);
1685 sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
1686 allargs = newallargs;
1688 flags = DEBUG_PROCESS;
1692 flags |= CREATE_NEW_PROCESS_GROUP;
1695 flags |= CREATE_NEW_CONSOLE;
1697 args = alloca (strlen (toexec) + strlen (allargs) + 2);
1698 strcpy (args, toexec);
1700 strcat (args, allargs);
1702 /* Prepare the environment vars for CreateProcess. */
1704 /* This code used to assume all env vars were file names and would
1705 translate them all to win32 style. That obviously doesn't work in the
1706 general case. The current rule is that we only translate PATH.
1707 We need to handle PATH because we're about to call CreateProcess and
1708 it uses PATH to find DLL's. Fortunately PATH has a well-defined value
1709 in both posix and win32 environments. cygwin.dll will change it back
1710 to posix style if necessary. */
1712 static const char *conv_path_names[] =
1718 /* CreateProcess takes the environment list as a null terminated set of
1719 strings (i.e. two nulls terminate the list). */
1721 /* Get total size for env strings. */
1722 for (envlen = 0, i = 0; env[i] && *env[i]; i++)
1726 for (j = 0; conv_path_names[j]; j++)
1728 len = strlen (conv_path_names[j]);
1729 if (strncmp (conv_path_names[j], env[i], len) == 0)
1731 if (cygwin_posix_path_list_p (env[i] + len))
1733 + cygwin_posix_to_win32_path_list_buf_size (env[i] + len);
1735 envlen += strlen (env[i]) + 1;
1739 if (conv_path_names[j] == NULL)
1740 envlen += strlen (env[i]) + 1;
1743 winenv = alloca (envlen + 1);
1745 /* Copy env strings into new buffer. */
1746 for (temp = winenv, i = 0; env[i] && *env[i]; i++)
1750 for (j = 0; conv_path_names[j]; j++)
1752 len = strlen (conv_path_names[j]);
1753 if (strncmp (conv_path_names[j], env[i], len) == 0)
1755 if (cygwin_posix_path_list_p (env[i] + len))
1757 memcpy (temp, env[i], len);
1758 cygwin_posix_to_win32_path_list (env[i] + len, temp + len);
1761 strcpy (temp, env[i]);
1765 if (conv_path_names[j] == NULL)
1766 strcpy (temp, env[i]);
1768 temp += strlen (temp) + 1;
1771 /* Final nil string to terminate new env. */
1775 if (!inferior_io_terminal)
1776 tty = ostdin = ostdout = ostderr = -1;
1779 tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
1782 print_sys_errmsg (inferior_io_terminal, errno);
1783 ostdin = ostdout = ostderr = -1;
1796 ret = CreateProcess (0,
1797 args, /* command line */
1798 NULL, /* Security */
1800 TRUE, /* inherit handles */
1801 flags, /* start flags */
1803 NULL, /* current directory */
1818 error ("Error creating process %s, (error %d)\n", exec_file, (unsigned) GetLastError ());
1820 CloseHandle (pi.hThread);
1821 CloseHandle (pi.hProcess);
1823 if (useshell && shell[0] != '\0')
1828 do_initial_child_stuff (pi.dwProcessId);
1830 /* child_continue (DBG_CONTINUE, -1); */
1831 proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
1835 child_mourn_inferior (void)
1837 (void) child_continue (DBG_CONTINUE, -1);
1838 i386_cleanup_dregs();
1839 unpush_target (&child_ops);
1840 generic_mourn_inferior ();
1843 /* Send a SIGINT to the process group. This acts just like the user typed a
1844 ^C on the controlling terminal. */
1849 DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
1850 CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
1851 registers_changed (); /* refresh register state */
1855 child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
1856 int write, struct mem_attrib *mem,
1857 struct target_ops *target)
1862 DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
1863 len, (DWORD) memaddr));
1864 if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
1867 FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
1871 DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
1872 len, (DWORD) memaddr));
1873 if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
1881 child_kill_inferior (void)
1883 CHECK (TerminateProcess (current_process_handle, 0));
1887 if (!child_continue (DBG_CONTINUE, -1))
1889 if (!WaitForDebugEvent (¤t_event, INFINITE))
1891 if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
1895 CHECK (CloseHandle (current_process_handle));
1897 /* this may fail in an attached process so don't check. */
1898 (void) CloseHandle (current_thread->h);
1899 target_mourn_inferior (); /* or just child_mourn_inferior? */
1903 child_resume (ptid_t ptid, int step, enum target_signal sig)
1906 DWORD continue_status = DBG_CONTINUE;
1908 int pid = PIDGET (ptid);
1910 if (sig != TARGET_SIGNAL_0)
1912 if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
1914 DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
1916 else if (sig == last_sig)
1917 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1920 /* This code does not seem to work, because
1921 the kernel does probably not consider changes in the ExceptionRecord
1922 structure when passing the exception to the inferior.
1923 Note that this seems possible in the exception handler itself. */
1926 for (i = 0; xlate[i].them != -1; i++)
1927 if (xlate[i].us == sig)
1929 current_event.u.Exception.ExceptionRecord.ExceptionCode =
1931 continue_status = DBG_EXCEPTION_NOT_HANDLED;
1934 if (continue_status == DBG_CONTINUE)
1936 DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
1940 DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
1944 last_sig = TARGET_SIGNAL_0;
1946 DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
1949 /* Get context for currently selected thread */
1950 th = thread_rec (current_event.dwThreadId, FALSE);
1955 /* Single step by setting t bit */
1956 child_fetch_inferior_registers (PS_REGNUM);
1957 th->context.EFlags |= FLAG_TRACE_BIT;
1960 if (th->context.ContextFlags)
1962 if (debug_registers_changed)
1964 th->context.Dr0 = dr[0];
1965 th->context.Dr1 = dr[1];
1966 th->context.Dr2 = dr[2];
1967 th->context.Dr3 = dr[3];
1968 /* th->context.Dr6 = dr[6];
1969 FIXME: should we set dr6 also ?? */
1970 th->context.Dr7 = dr[7];
1972 CHECK (SetThreadContext (th->h, &th->context));
1973 th->context.ContextFlags = 0;
1977 /* Allow continuing with the same signal that interrupted us.
1978 Otherwise complain. */
1980 child_continue (continue_status, pid);
1984 child_prepare_to_store (void)
1986 /* Do nothing, since we can store individual regs */
1990 child_can_run (void)
1998 DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n",
1999 PIDGET (inferior_ptid)));
2002 struct target_ops child_ops;
2005 init_child_ops (void)
2007 child_ops.to_shortname = "child";
2008 child_ops.to_longname = "Win32 child process";
2009 child_ops.to_doc = "Win32 child process (started by the \"run\" command).";
2010 child_ops.to_open = child_open;
2011 child_ops.to_close = child_close;
2012 child_ops.to_attach = child_attach;
2013 child_ops.to_detach = child_detach;
2014 child_ops.to_resume = child_resume;
2015 child_ops.to_wait = child_wait;
2016 child_ops.to_fetch_registers = child_fetch_inferior_registers;
2017 child_ops.to_store_registers = child_store_inferior_registers;
2018 child_ops.to_prepare_to_store = child_prepare_to_store;
2019 child_ops.to_xfer_memory = child_xfer_memory;
2020 child_ops.to_files_info = child_files_info;
2021 child_ops.to_insert_breakpoint = memory_insert_breakpoint;
2022 child_ops.to_remove_breakpoint = memory_remove_breakpoint;
2023 child_ops.to_terminal_init = terminal_init_inferior;
2024 child_ops.to_terminal_inferior = terminal_inferior;
2025 child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
2026 child_ops.to_terminal_ours = terminal_ours;
2027 child_ops.to_terminal_save_ours = terminal_save_ours;
2028 child_ops.to_terminal_info = child_terminal_info;
2029 child_ops.to_kill = child_kill_inferior;
2030 child_ops.to_create_inferior = child_create_inferior;
2031 child_ops.to_mourn_inferior = child_mourn_inferior;
2032 child_ops.to_can_run = child_can_run;
2033 child_ops.to_thread_alive = win32_child_thread_alive;
2034 child_ops.to_pid_to_str = cygwin_pid_to_str;
2035 child_ops.to_stop = child_stop;
2036 child_ops.to_stratum = process_stratum;
2037 child_ops.to_has_all_memory = 1;
2038 child_ops.to_has_memory = 1;
2039 child_ops.to_has_stack = 1;
2040 child_ops.to_has_registers = 1;
2041 child_ops.to_has_execution = 1;
2042 child_ops.to_magic = OPS_MAGIC;
2046 _initialize_win32_nat (void)
2048 struct cmd_list_element *c;
2052 c = add_com ("dll-symbols", class_files, dll_symbol_command,
2053 "Load dll library symbols from FILE.");
2054 set_cmd_completer (c, filename_completer);
2056 add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
2058 add_show_from_set (add_set_cmd ("shell", class_support, var_boolean,
2060 "Set use of shell to start subprocess.",
2064 add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean,
2065 (char *) &new_console,
2066 "Set creation of new console when creating child process.",
2070 add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean,
2071 (char *) &new_group,
2072 "Set creation of new group when creating child process.",
2076 add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean,
2077 (char *) &debug_exec,
2078 "Set whether to display execution in child process.",
2082 add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean,
2083 (char *) &debug_events,
2084 "Set whether to display kernel events in child process.",
2088 add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean,
2089 (char *) &debug_memory,
2090 "Set whether to display memory accesses in child process.",
2094 add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean,
2095 (char *) &debug_exceptions,
2096 "Set whether to display kernel exceptions in child process.",
2100 add_info ("dll", info_dll_command, "Status of loaded DLLs.");
2101 add_info_alias ("sharedlibrary", "dll", 1);
2103 add_prefix_cmd ("w32", class_info, info_w32_command,
2104 "Print information specific to Win32 debugging.",
2105 &info_w32_cmdlist, "info w32 ", 0, &infolist);
2107 add_cmd ("selector", class_info, display_selectors,
2108 "Display selectors infos.",
2111 add_target (&child_ops);
2114 /* Hardware watchpoint support, adapted from go32-nat.c code. */
2116 /* Pass the address ADDR to the inferior in the I'th debug register.
2117 Here we just store the address in dr array, the registers will be
2118 actually set up when child_continue is called. */
2120 cygwin_set_dr (int i, CORE_ADDR addr)
2123 internal_error (__FILE__, __LINE__,
2124 "Invalid register %d in cygwin_set_dr.\n", i);
2125 dr[i] = (unsigned) addr;
2126 debug_registers_changed = 1;
2127 debug_registers_used = 1;
2130 /* Pass the value VAL to the inferior in the DR7 debug control
2131 register. Here we just store the address in D_REGS, the watchpoint
2132 will be actually set up in child_wait. */
2134 cygwin_set_dr7 (unsigned val)
2137 debug_registers_changed = 1;
2138 debug_registers_used = 1;
2141 /* Get the value of the DR6 debug status register from the inferior.
2142 Here we just return the value stored in dr[6]
2143 by the last call to thread_rec for current_event.dwThreadId id. */
2145 cygwin_get_dr6 (void)
2151 /* Determine if the thread referenced by "pid" is alive
2152 by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
2153 it means that the pid has died. Otherwise it is assumed to be alive. */
2155 win32_child_thread_alive (ptid_t ptid)
2157 int pid = PIDGET (ptid);
2159 return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
2163 /* Convert pid to printable format. */
2165 cygwin_pid_to_str (ptid_t ptid)
2167 static char buf[80];
2168 int pid = PIDGET (ptid);
2170 if ((DWORD) pid == current_event.dwProcessId)
2171 sprintf (buf, "process %d", pid);
2173 sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
2178 core_dll_symbols_add (char *dll_name, DWORD base_addr)
2180 struct objfile *objfile;
2181 char *objfile_basename;
2182 const char *dll_basename;
2184 if (!(dll_basename = strrchr (dll_name, '/')))
2185 dll_basename = dll_name;
2189 ALL_OBJFILES (objfile)
2191 objfile_basename = strrchr (objfile->name, '/');
2193 if (objfile_basename &&
2194 strcmp (dll_basename, objfile_basename + 1) == 0)
2196 printf_unfiltered ("%08lx:%s (symbols previously loaded)\n",
2197 base_addr, dll_name);
2202 register_loaded_dll (dll_name, base_addr + 0x1000);
2203 solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000);
2211 struct target_ops *target;
2213 } map_code_section_args;
2216 map_single_dll_code_section (bfd * abfd, asection * sect, void *obj)
2220 struct section_table *new_target_sect_ptr;
2222 map_code_section_args *args = (map_code_section_args *) obj;
2223 struct target_ops *target = args->target;
2224 if (sect->flags & SEC_CODE)
2226 update_coreops = core_ops.to_sections == target->to_sections;
2228 if (target->to_sections)
2230 old = target->to_sections_end - target->to_sections;
2231 target->to_sections = (struct section_table *)
2232 xrealloc ((char *) target->to_sections,
2233 (sizeof (struct section_table)) * (1 + old));
2238 target->to_sections = (struct section_table *)
2239 xmalloc ((sizeof (struct section_table)));
2241 target->to_sections_end = target->to_sections + (1 + old);
2243 /* Update the to_sections field in the core_ops structure
2247 core_ops.to_sections = target->to_sections;
2248 core_ops.to_sections_end = target->to_sections_end;
2250 new_target_sect_ptr = target->to_sections + old;
2251 new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect);
2252 new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) +
2253 bfd_section_size (abfd, sect);;
2254 new_target_sect_ptr->the_bfd_section = sect;
2255 new_target_sect_ptr->bfd = abfd;
2260 dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target)
2263 map_code_section_args map_args;
2264 asection *lowest_sect;
2266 if (dll_name == NULL || target == NULL)
2268 name = xstrdup (dll_name);
2269 dll_bfd = bfd_openr (name, "pei-i386");
2270 if (dll_bfd == NULL)
2273 if (bfd_check_format (dll_bfd, bfd_object))
2275 lowest_sect = bfd_get_section_by_name (dll_bfd, ".text");
2276 if (lowest_sect == NULL)
2278 map_args.target = target;
2279 map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect);
2281 bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args));
2288 core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj)
2290 struct target_ops *target = (struct target_ops *) obj;
2295 char *dll_name = NULL;
2297 struct win32_pstatus *pstatus;
2300 if (strncmp (sect->name, ".module", 7))
2303 buf = (char *) xmalloc (sect->_raw_size + 1);
2306 printf_unfiltered ("memory allocation failed for %s\n", sect->name);
2309 if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size))
2312 pstatus = (struct win32_pstatus *) buf;
2314 memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr));
2315 dll_name_size = pstatus->data.module_info.module_name_size;
2316 if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size)
2319 dll_name = (char *) xmalloc (dll_name_size + 1);
2322 printf_unfiltered ("memory allocation failed for %s\n", sect->name);
2325 strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size);
2327 while ((p = strchr (dll_name, '\\')))
2330 if (!core_dll_symbols_add (dll_name, (DWORD) base_addr))
2331 printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name);
2333 if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target))
2334 printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name);
2345 child_solib_add (char *filename, int from_tty, struct target_ops *target,
2352 child_clear_solibs ();
2353 bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target);
2357 if (solib_end && solib_end->name)
2358 solib_end->objfile = solib_symbols_add (solib_end->name, from_tty,
2359 solib_end->load_addr);
2364 fetch_elf_core_registers (char *core_reg_sect,
2365 unsigned core_reg_size,
2370 if (core_reg_size < sizeof (CONTEXT))
2372 error ("Core file register section too small (%u bytes).", core_reg_size);
2375 for (r = 0; r < NUM_REGS; r++)
2376 supply_register (r, core_reg_sect + mappings[r]);
2379 static struct core_fns win32_elf_core_fns =
2381 bfd_target_elf_flavour,
2382 default_check_format,
2383 default_core_sniffer,
2384 fetch_elf_core_registers,
2389 _initialize_core_win32 (void)
2391 add_core_fns (&win32_elf_core_fns);
2395 _initialize_check_for_gdb_ini (void)
2398 if (inhibit_gdbinit)
2401 homedir = getenv ("HOME");
2405 char *oldini = (char *) alloca (strlen (homedir) +
2406 sizeof ("/gdb.ini"));
2407 strcpy (oldini, homedir);
2408 p = strchr (oldini, '\0');
2409 if (p > oldini && p[-1] != '/')
2411 strcpy (p, "gdb.ini");
2412 if (access (oldini, 0) == 0)
2414 int len = strlen (oldini);
2415 char *newini = alloca (len + 1);
2416 sprintf (newini, "%.*s.gdbinit",
2417 (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
2418 warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini);