/* Target-vector operations for controlling win32 child processes, for GDB.
- Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
- Contributed by Cygnus Support.
+
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007 Free Software Foundation, Inc.
+
+ Contributed by Cygnus Solutions, A Red Hat Company.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without eve nthe implied warranty of
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-*/
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* by Steve Chamberlain, sac@cygnus.com */
-
-/* We assume we're being built with and will be used for cygwin. */
+/* Originally by Steve Chamberlain, sac@cygnus.com */
#include "defs.h"
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
-#include "wait.h"
+#include "exceptions.h"
#include "gdbcore.h"
#include "command.h"
+#include "completer.h"
+#include "regcache.h"
+#include "top.h"
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
-
-#ifdef _MSC_VER
-#include "windefs.h"
-#else /* other WIN32 compiler */
#include <windows.h>
+#include <imagehlp.h>
+#ifdef __CYGWIN__
+#include <sys/cygwin.h>
#endif
+#include <signal.h>
#include "buildsym.h"
#include "symfile.h"
#include "objfiles.h"
+#include "gdb_obstack.h"
#include "gdb_string.h"
#include "gdbthread.h"
#include "gdbcmd.h"
#include <sys/param.h>
#include <unistd.h>
+#include "exec.h"
+#include "solist.h"
+#include "solib.h"
+#include "xml-support.h"
+
+#include "i386-tdep.h"
+#include "i387-tdep.h"
+
+#include "i386-cygwin-tdep.h"
+
+static struct target_ops win32_ops;
+
+#ifdef __CYGWIN__
+/* The starting and ending address of the cygwin1.dll text segment. */
+static bfd_vma cygwin_load_start;
+static bfd_vma cygwin_load_end;
+#endif
+
+static int have_saved_context; /* True if we've saved context from a cygwin signal. */
+static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */
+
+/* If we're not using the old Cygwin header file set, define the
+ following which never should have been in the generic Win32 API
+ headers in the first place since they were our own invention... */
+#ifndef _GNU_H_WINDOWS_H
+enum
+ {
+ FLAG_TRACE_BIT = 0x100,
+ CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
+ };
+#endif
+#include <psapi.h>
+
+#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
+ | CONTEXT_EXTENDED_REGISTERS
+
+static unsigned dr[8];
+static int debug_registers_changed;
+static int debug_registers_used;
/* The string sent by cygwin when it processes a signal.
FIXME: This should be in a cygwin include file. */
-#define CYGWIN_SIGNAL_STRING "cygwin: signal"
-
-#define CHECK(x) check (x, __FILE__,__LINE__)
-#define DEBUG_EXEC(x) if (debug_exec) printf x
-#define DEBUG_EVENTS(x) if (debug_events) printf x
-#define DEBUG_MEM(x) if (debug_memory) printf x
-#define DEBUG_EXCEPT(x) if (debug_exceptions) printf x
+#ifndef _CYGWIN_SIGNAL_STRING
+#define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
+#endif
-/* Forward declaration */
-extern struct target_ops child_ops;
+#define CHECK(x) check (x, __FILE__,__LINE__)
+#define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
+#define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
+#define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
+#define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
-static void child_stop PARAMS ((void));
-static int win32_child_thread_alive PARAMS ((int));
+static void win32_stop (void);
+static int win32_win32_thread_alive (ptid_t);
+static void win32_kill_inferior (void);
-static int last_sig = 0; /* Set if a signal was received from the
- debugged process */
+static enum target_signal last_sig = TARGET_SIGNAL_0;
+/* Set if a signal was received from the debugged process */
/* Thread information structure used to track information that is
not available in gdb's thread structure. */
typedef struct thread_info_struct
-{
- struct thread_info_struct *next;
- DWORD id;
- HANDLE h;
- char *name;
- int suspend_count;
- CONTEXT context;
-} thread_info;
+ {
+ struct thread_info_struct *next;
+ DWORD id;
+ HANDLE h;
+ char *name;
+ int suspend_count;
+ int reload_context;
+ CONTEXT context;
+ STACKFRAME sf;
+ }
+thread_info;
-static thread_info thread_head = {NULL};
+static thread_info thread_head;
/* The process and thread handles for the above context. */
/* Counts of things. */
static int exception_count = 0;
static int event_count = 0;
+static int saw_create;
/* User options. */
static int new_console = 0;
-static int new_group = 0;
+#ifdef __CYGWIN__
+static int cygwin_exceptions = 0;
+#endif
+static int new_group = 1;
static int debug_exec = 0; /* show execution */
static int debug_events = 0; /* show events from kernel */
static int debug_memory = 0; /* show target memory accesses */
static int debug_exceptions = 0; /* show target exceptions */
+static int useshell = 0; /* use shell for subprocesses */
/* This vector maps GDB's idea of a register's number into an address
in the win32 exception context vector.
#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
static const int mappings[] =
{
- context_offset(Eax),
- context_offset(Ecx),
- context_offset(Edx),
- context_offset(Ebx),
- context_offset(Esp),
- context_offset(Ebp),
- context_offset(Esi),
- context_offset(Edi),
- context_offset(Eip),
- context_offset(EFlags),
- context_offset(SegCs),
- context_offset(SegSs),
- context_offset(SegDs),
- context_offset(SegEs),
- context_offset(SegFs),
- context_offset(SegGs),
- context_offset(FloatSave.RegisterArea[0 * 10]),
- context_offset(FloatSave.RegisterArea[1 * 10]),
- context_offset(FloatSave.RegisterArea[2 * 10]),
- context_offset(FloatSave.RegisterArea[3 * 10]),
- context_offset(FloatSave.RegisterArea[4 * 10]),
- context_offset(FloatSave.RegisterArea[5 * 10]),
- context_offset(FloatSave.RegisterArea[6 * 10]),
- context_offset(FloatSave.RegisterArea[7 * 10]),
+ context_offset (Eax),
+ context_offset (Ecx),
+ context_offset (Edx),
+ context_offset (Ebx),
+ context_offset (Esp),
+ context_offset (Ebp),
+ context_offset (Esi),
+ context_offset (Edi),
+ context_offset (Eip),
+ context_offset (EFlags),
+ context_offset (SegCs),
+ context_offset (SegSs),
+ context_offset (SegDs),
+ context_offset (SegEs),
+ context_offset (SegFs),
+ context_offset (SegGs),
+ context_offset (FloatSave.RegisterArea[0 * 10]),
+ context_offset (FloatSave.RegisterArea[1 * 10]),
+ context_offset (FloatSave.RegisterArea[2 * 10]),
+ context_offset (FloatSave.RegisterArea[3 * 10]),
+ context_offset (FloatSave.RegisterArea[4 * 10]),
+ context_offset (FloatSave.RegisterArea[5 * 10]),
+ context_offset (FloatSave.RegisterArea[6 * 10]),
+ context_offset (FloatSave.RegisterArea[7 * 10]),
+ context_offset (FloatSave.ControlWord),
+ context_offset (FloatSave.StatusWord),
+ context_offset (FloatSave.TagWord),
+ context_offset (FloatSave.ErrorSelector),
+ context_offset (FloatSave.ErrorOffset),
+ context_offset (FloatSave.DataSelector),
+ context_offset (FloatSave.DataOffset),
+ context_offset (FloatSave.ErrorSelector)
+ /* XMM0-7 */ ,
+ context_offset (ExtendedRegisters[10*16]),
+ context_offset (ExtendedRegisters[11*16]),
+ context_offset (ExtendedRegisters[12*16]),
+ context_offset (ExtendedRegisters[13*16]),
+ context_offset (ExtendedRegisters[14*16]),
+ context_offset (ExtendedRegisters[15*16]),
+ context_offset (ExtendedRegisters[16*16]),
+ context_offset (ExtendedRegisters[17*16]),
+ /* MXCSR */
+ context_offset (ExtendedRegisters[24])
};
+#undef context_offset
+
/* This vector maps the target's idea of an exception (extracted
from the DEBUG_EVENT structure) to GDB's idea. */
{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
{DBG_CONTROL_C, TARGET_SIGNAL_INT},
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
+ {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
{-1, -1}};
+static void
+check (BOOL ok, const char *file, int line)
+{
+ if (!ok)
+ printf_filtered ("error return %s:%d was %lu\n", file, line,
+ GetLastError ());
+}
+
/* Find a thread record given a thread id.
If get_context then also retrieve the context for this
thread. */
{
thread_info *th;
- for (th = &thread_head; (th = th->next) != NULL; )
+ for (th = &thread_head; (th = th->next) != NULL;)
if (th->id == id)
{
if (!th->suspend_count && get_context)
{
- if (get_context > 0)
+ if (get_context > 0 && id != current_event.dwThreadId)
th->suspend_count = SuspendThread (th->h) + 1;
else if (get_context < 0)
th->suspend_count = -1;
-
- th->context.ContextFlags = CONTEXT_DEBUGGER;
- GetThreadContext (th->h, &th->context);
+ th->reload_context = 1;
}
return th;
}
/* Add a thread to the thread list */
static thread_info *
-child_add_thread(DWORD id, HANDLE h)
+win32_add_thread (DWORD id, HANDLE h)
{
thread_info *th;
if ((th = thread_rec (id, FALSE)))
return th;
- th = (thread_info *) xmalloc (sizeof (*th));
- memset(th, 0, sizeof (*th));
+ th = XZALLOC (thread_info);
th->id = id;
th->h = h;
th->next = thread_head.next;
thread_head.next = th;
- add_thread (id);
+ add_thread (pid_to_ptid (id));
+ /* Set the debug registers for the new thread in they are used. */
+ if (debug_registers_used)
+ {
+ /* Only change the value of the debug registers. */
+ th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
+ CHECK (GetThreadContext (th->h, &th->context));
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ /* th->context.Dr6 = dr[6];
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr[7];
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
return th;
}
/* Clear out any old thread list and reintialize it to a
pristine state. */
static void
-child_init_thread_list ()
+win32_init_thread_list (void)
{
thread_info *th = &thread_head;
- DEBUG_EVENTS (("gdb: child_init_thread_list\n"));
+ DEBUG_EVENTS (("gdb: win32_init_thread_list\n"));
init_thread_list ();
while (th->next != NULL)
{
thread_info *here = th->next;
th->next = here->next;
(void) CloseHandle (here->h);
- free (here);
+ xfree (here);
}
+ thread_head.next = NULL;
}
/* Delete a thread from the list of threads */
static void
-child_delete_thread (DWORD id)
+win32_delete_thread (DWORD id)
{
thread_info *th;
if (info_verbose)
- printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (id));
- delete_thread (id);
+ printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
+ delete_thread (pid_to_ptid (id));
for (th = &thread_head;
th->next != NULL && th->next->id != id;
thread_info *here = th->next;
th->next = here->next;
CloseHandle (here->h);
- free (here);
+ xfree (here);
}
}
static void
-check (BOOL ok, const char *file, int line)
+do_win32_fetch_inferior_registers (struct regcache *regcache, int r)
{
- if (!ok)
- printf_filtered ("error return %s:%d was %d\n", file, line, GetLastError ());
-}
+ char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
+ long l;
-static void
-do_child_fetch_inferior_registers (int r)
-{
- if (r >= 0)
- supply_register (r, ((char *) ¤t_thread->context) + mappings[r]);
+ if (!current_thread)
+ return; /* Windows sometimes uses a non-existent thread id in its
+ events */
+
+ if (current_thread->reload_context)
+ {
+#ifdef __COPY_CONTEXT_SIZE
+ if (have_saved_context)
+ {
+ /* Lie about where the program actually is stopped since cygwin has informed us that
+ we should consider the signal to have occurred at another location which is stored
+ in "saved_context. */
+ memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE);
+ have_saved_context = 0;
+ }
+ else
+#endif
+ {
+ thread_info *th = current_thread;
+ th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
+ GetThreadContext (th->h, &th->context);
+ /* Copy dr values from that thread. */
+ dr[0] = th->context.Dr0;
+ dr[1] = th->context.Dr1;
+ dr[2] = th->context.Dr2;
+ dr[3] = th->context.Dr3;
+ dr[6] = th->context.Dr6;
+ dr[7] = th->context.Dr7;
+ }
+ current_thread->reload_context = 0;
+ }
+
+#define I387_ST0_REGNUM I386_ST0_REGNUM
+
+ if (r == I387_FISEG_REGNUM)
+ {
+ l = *((long *) context_offset) & 0xffff;
+ regcache_raw_supply (regcache, r, (char *) &l);
+ }
+ else if (r == I387_FOP_REGNUM)
+ {
+ l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
+ regcache_raw_supply (regcache, r, (char *) &l);
+ }
+ else if (r >= 0)
+ regcache_raw_supply (regcache, r, context_offset);
else
{
- for (r = 0; r < NUM_REGS; r++)
- do_child_fetch_inferior_registers (r);
+ for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
+ do_win32_fetch_inferior_registers (regcache, r);
}
+
+#undef I387_ST0_REGNUM
}
static void
-child_fetch_inferior_registers (int r)
+win32_fetch_inferior_registers (struct regcache *regcache, int r)
{
- current_thread = thread_rec (inferior_pid, TRUE);
- do_child_fetch_inferior_registers (r);
+ current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
+ /* Check if current_thread exists. Windows sometimes uses a non-existent
+ thread id in its events */
+ if (current_thread)
+ do_win32_fetch_inferior_registers (regcache, r);
}
static void
-do_child_store_inferior_registers (int r)
+do_win32_store_inferior_registers (const struct regcache *regcache, int r)
{
- if (r >= 0)
- read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]);
+ if (!current_thread)
+ /* Windows sometimes uses a non-existent thread id in its events */;
+ else if (r >= 0)
+ regcache_raw_collect (regcache, r,
+ ((char *) ¤t_thread->context) + mappings[r]);
else
{
- for (r = 0; r < NUM_REGS; r++)
- do_child_store_inferior_registers (r);
+ for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
+ do_win32_store_inferior_registers (regcache, r);
}
}
/* Store a new register value into the current thread context */
static void
-child_store_inferior_registers (int r)
+win32_store_inferior_registers (struct regcache *regcache, int r)
{
- current_thread = thread_rec (inferior_pid, TRUE);
- do_child_store_inferior_registers (r);
+ current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
+ /* Check if current_thread exists. Windows sometimes uses a non-existent
+ thread id in its events */
+ if (current_thread)
+ do_win32_store_inferior_registers (regcache, r);
}
-/* Wait for child to do something. Return pid of child, or -1 in case
- of error; store status through argument pointer OURSTATUS. */
+static int psapi_loaded = 0;
+static HMODULE psapi_module_handle = NULL;
+static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
+static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
+static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
static int
-handle_load_dll (PTR dummy)
+psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
{
- LOAD_DLL_DEBUG_INFO * event = ¤t_event.u.LoadDll;
- DWORD dll_name_ptr;
- DWORD done;
- char dll_buf[MAX_PATH + 1];
- char *p, *dll_name = NULL, *dll_basename;
- struct objfile *objfile;
- MEMORY_BASIC_INFORMATION minfo;
-
- dll_buf[0] = dll_buf[sizeof(dll_buf) - 1] = '\0';
-
- /* The following code attempts to find the name of the dll by reading the
- name from the processes memory. Unfortunately it doesn't work right.
- Doing this the "right way" for Windows is very difficult. FIXME */
-#ifdef DOESNT_WORK
- memset (&minfo, 0, sizeof minfo);
- if (VirtualQueryEx (current_process_handle, (LPCVOID) event->lpBaseOfDll,
- &minfo, sizeof(minfo)) && minfo.BaseAddress) {
- DWORD len;
- IMAGE_DOS_HEADER *hmm0 = (IMAGE_DOS_HEADER *) minfo.BaseAddress;
- HMODULE hmm = (HMODULE) (((DWORD) hmm0) + hmm0->e_lfanew);
-
- if ((len = GetModuleFileName (hmm, dll_buf, MAX_PATH)))
+ DWORD len;
+ MODULEINFO mi;
+ int i;
+ HMODULE dh_buf[1];
+ HMODULE *DllHandle = dh_buf;
+ DWORD cbNeeded;
+ BOOL ok;
+
+ if (!psapi_loaded ||
+ psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
+ {
+ if (psapi_loaded)
+ goto failed;
+ psapi_loaded = 1;
+ psapi_module_handle = LoadLibrary ("psapi.dll");
+ if (!psapi_module_handle)
{
- dll_name = dll_buf;
- dll_name[len] = '\0';
+ /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
+ goto failed;
}
- }
-#endif
+ psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
+ psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
+ psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
+ "GetModuleFileNameExA");
+ if (psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
+ goto failed;
+ }
- /* Attempt to read the name of the dll that was detected.
- This is documented to work only when actively debugging
- a program. It will not work for attached processes. */
- if (dll_name == NULL || *dll_name == '\0')
- {
- int size = event->fUnicode ? sizeof (WCHAR) : sizeof (char);
- int len = 0;
- char b[2];
+ cbNeeded = 0;
+ ok = (*psapi_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded);
- ReadProcessMemory (current_process_handle,
- (LPCVOID) event->lpImageName,
- (char *) &dll_name_ptr,
- sizeof (dll_name_ptr), &done);
+ if (!ok || !cbNeeded)
+ goto failed;
- /* See if we could read the address of a string, and that the
- address isn't null. */
+ DllHandle = (HMODULE *) alloca (cbNeeded);
+ if (!DllHandle)
+ goto failed;
- if (done != sizeof (dll_name_ptr) || !dll_name_ptr)
+ ok = (*psapi_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ cbNeeded,
+ &cbNeeded);
+ if (!ok)
+ goto failed;
+
+ for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
+ {
+ if (!(*psapi_GetModuleInformation) (current_process_handle,
+ DllHandle[i],
+ &mi,
+ sizeof (mi)))
+ error (_("Can't get module info"));
+
+ len = (*psapi_GetModuleFileNameExA) (current_process_handle,
+ DllHandle[i],
+ dll_name_ret,
+ MAX_PATH);
+ if (len == 0)
+ error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
+
+ if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
return 1;
+ }
- do
- {
- ReadProcessMemory (current_process_handle,
- (LPCVOID) (dll_name_ptr + len * size),
- &b,
- size,
- &done);
- len++;
- }
- while ((b[0] != 0 || b[size - 1] != 0) && done == size);
+failed:
+ dll_name_ret[0] = '\0';
+ return 0;
+}
+
+/* Encapsulate the information required in a call to
+ symbol_file_add_args */
+struct safe_symbol_file_add_args
+{
+ char *name;
+ int from_tty;
+ struct section_addr_info *addrs;
+ int mainline;
+ int flags;
+ struct ui_file *err, *out;
+ struct objfile *ret;
+};
+
+/* Maintain a linked list of "so" information. */
+struct lm_info
+{
+ DWORD load_addr;
+};
+
+static struct so_list solib_start, *solib_end;
+
+/* Call symbol_file_add with stderr redirected. We don't care if there
+ are errors. */
+static int
+safe_symbol_file_add_stub (void *argv)
+{
+#define p ((struct safe_symbol_file_add_args *) argv)
+ struct so_list *so = &solib_start;
+
+ p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
+ return !!p->ret;
+#undef p
+}
+
+/* Restore gdb's stderr after calling symbol_file_add */
+static void
+safe_symbol_file_add_cleanup (void *p)
+{
+#define sp ((struct safe_symbol_file_add_args *)p)
+ gdb_flush (gdb_stderr);
+ gdb_flush (gdb_stdout);
+ ui_file_delete (gdb_stderr);
+ ui_file_delete (gdb_stdout);
+ gdb_stderr = sp->err;
+ gdb_stdout = sp->out;
+#undef sp
+}
- dll_name = alloca (len);
+/* symbol_file_add wrapper that prevents errors from being displayed. */
+static struct objfile *
+safe_symbol_file_add (char *name, int from_tty,
+ struct section_addr_info *addrs,
+ int mainline, int flags)
+{
+ struct safe_symbol_file_add_args p;
+ struct cleanup *cleanup;
+
+ cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
+
+ p.err = gdb_stderr;
+ p.out = gdb_stdout;
+ gdb_flush (gdb_stderr);
+ gdb_flush (gdb_stdout);
+ gdb_stderr = ui_file_new ();
+ gdb_stdout = ui_file_new ();
+ p.name = name;
+ p.from_tty = from_tty;
+ p.addrs = addrs;
+ p.mainline = mainline;
+ p.flags = flags;
+ catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
+
+ do_cleanups (cleanup);
+ return p.ret;
+}
- if (event->fUnicode)
+static struct so_list *
+win32_make_so (const char *name, DWORD load_addr)
+{
+ struct so_list *so;
+ char buf[MAX_PATH + 1];
+ char cwd[MAX_PATH + 1];
+ char *p;
+ WIN32_FIND_DATA w32_fd;
+ HANDLE h = FindFirstFile(name, &w32_fd);
+ MEMORY_BASIC_INFORMATION m;
+
+ if (h == INVALID_HANDLE_VALUE)
+ strcpy (buf, name);
+ else
+ {
+ FindClose (h);
+ strcpy (buf, name);
+ if (GetCurrentDirectory (MAX_PATH + 1, cwd))
{
- WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR));
- ReadProcessMemory (current_process_handle,
- (LPCVOID) dll_name_ptr,
- unicode_dll_name,
- len * sizeof (WCHAR),
- &done);
-
- WideCharToMultiByte (CP_ACP, 0,
- unicode_dll_name, len,
- dll_name, len, 0, 0);
+ p = strrchr (buf, '\\');
+ if (p)
+ p[1] = '\0';
+ SetCurrentDirectory (buf);
+ GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
+ SetCurrentDirectory (cwd);
}
- else
+ }
+
+ if (strcasecmp (buf, "ntdll.dll") == 0)
+ {
+ GetSystemDirectory (buf, sizeof (buf));
+ strcat (buf, "\\ntdll.dll");
+ }
+ so = XZALLOC (struct so_list);
+ so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
+ so->lm_info->load_addr = load_addr;
+ strcpy (so->so_original_name, name);
+#ifndef __CYGWIN__
+ strcpy (so->so_name, buf);
+#else
+ cygwin_conv_to_posix_path (buf, so->so_name);
+ /* Record cygwin1.dll .text start/end. */
+ p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
+ if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
+ {
+ bfd *abfd;
+ asection *text = NULL;
+ CORE_ADDR text_vma;
+
+ abfd = bfd_openr (name, "pei-i386");
+
+ if (!abfd)
+ return so;
+
+ if (bfd_check_format (abfd, bfd_object))
+ text = bfd_get_section_by_name (abfd, ".text");
+
+ if (!text)
{
- ReadProcessMemory (current_process_handle,
- (LPCVOID) dll_name_ptr,
- dll_name,
- len,
- &done);
+ bfd_close (abfd);
+ return so;
}
+
+ /* The symbols in a dll are offset by 0x1000, which is the the
+ offset from 0 of the first byte in an image - because of the
+ file header and the section alignment. */
+ cygwin_load_start = load_addr + 0x1000;
+ cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
+
+ bfd_close (abfd);
}
+#endif
- if (!dll_name)
- return 1;
+ return so;
+}
- while ((p = strchr (dll_name, '\\')))
- *p = '/';
+static char *
+get_image_name (HANDLE h, void *address, int unicode)
+{
+ static char buf[(2 * MAX_PATH) + 1];
+ DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
+ char *address_ptr;
+ int len = 0;
+ char b[2];
+ DWORD done;
- /* FIXME!! It would be nice to define one symbol which pointed to the
- front of the dll if we can't find any symbols. */
+ /* Attempt to read the name of the dll that was detected.
+ This is documented to work only when actively debugging
+ a program. It will not work for attached processes. */
+ if (address == NULL)
+ return NULL;
+
+ /* See if we could read the address of a string, and that the
+ address isn't null. */
+ if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
+ || done != sizeof (address_ptr) || !address_ptr)
+ return NULL;
+
+ /* Find the length of the string */
+ while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
+ && (b[0] != 0 || b[size - 1] != 0) && done == size)
+ continue;
- if (!(dll_basename = strrchr(dll_name, '/')))
- dll_basename = dll_name;
+ if (!unicode)
+ ReadProcessMemory (h, address_ptr, buf, len, &done);
else
- dll_basename++;
-
- ALL_OBJFILES(objfile)
{
- char *objfile_basename;
- objfile_basename = strrchr(objfile->name, '/');
+ WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
+ ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
+ &done);
- if (objfile_basename &&
- strcmp(dll_basename, objfile_basename + 1) == 0)
- {
- printf_unfiltered ("%x:%s (symbols previously loaded)\n",
- event->lpBaseOfDll, dll_name);
- goto out;
- }
- }
+ WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
+ }
+
+ return buf;
+}
+
+/* Wait for child to do something. Return pid of child, or -1 in case
+ of error; store status through argument pointer OURSTATUS. */
+static int
+handle_load_dll (void *dummy)
+{
+ LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
+ char dll_buf[MAX_PATH + 1];
+ char *dll_name = NULL;
- /* The symbols in a dll are offset by 0x1000, which is the
- the offset from 0 of the first byte in an image - because
- of the file header and the section alignment.
+ dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
- FIXME: Is this the real reason that we need the 0x1000 ? */
+ if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
+ dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
- printf_unfiltered ("%x:%s", event->lpBaseOfDll, dll_name);
- symbol_file_add (dll_name, 0, (int) event->lpBaseOfDll + 0x1000, 0, 0, 0, 0, 1);
- printf_unfiltered ("\n");
+ dll_name = dll_buf;
+
+ if (*dll_name == '\0')
+ dll_name = get_image_name (current_process_handle,
+ event->lpImageName, event->fUnicode);
+ if (!dll_name)
+ return 1;
+
+ solib_end->next = win32_make_so (dll_name, (DWORD) event->lpBaseOfDll);
+ solib_end = solib_end->next;
-out:
return 1;
}
+static void
+win32_free_so (struct so_list *so)
+{
+ if (so->lm_info)
+ xfree (so->lm_info);
+ xfree (so);
+}
+
+static int
+handle_unload_dll (void *dummy)
+{
+ DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll;
+ struct so_list *so;
+
+ for (so = &solib_start; so->next != NULL; so = so->next)
+ if (so->next->lm_info->load_addr == lpBaseOfDll)
+ {
+ struct so_list *sodel = so->next;
+ so->next = sodel->next;
+ if (!so->next)
+ solib_end = so;
+ win32_free_so (sodel);
+ solib_add (NULL, 0, NULL, auto_solib_add);
+ return 1;
+ }
+
+ error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
+
+ return 0;
+}
+
+/* Clear list of loaded DLLs. */
+static void
+win32_clear_solib (void)
+{
+ solib_start.next = NULL;
+ solib_end = &solib_start;
+}
+
+/* Load DLL symbol info. */
+void
+dll_symbol_command (char *args, int from_tty)
+{
+ int n;
+ dont_repeat ();
+
+ if (args == NULL)
+ error (_("dll-symbols requires a file name"));
+
+ n = strlen (args);
+ if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
+ {
+ char *newargs = (char *) alloca (n + 4 + 1);
+ strcpy (newargs, args);
+ strcat (newargs, ".dll");
+ args = newargs;
+ }
+
+ safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
+}
+
/* Handle DEBUG_STRING output from child process.
Cygwin prepends its messages with a "cygwin:". Interpret this as
a Cygwin signal. Otherwise just print the string as a warning. */
static int
handle_output_debug_string (struct target_waitstatus *ourstatus)
{
- char *s;
- int gotasig = FALSE;
+ char *s = NULL;
+ int retval = 0;
if (!target_read_string
- ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
+ ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
|| !s || !*s)
- return gotasig;
-
- if (strncmp(s, CYGWIN_SIGNAL_STRING, sizeof(CYGWIN_SIGNAL_STRING) - 1))
+ /* nothing to do */;
+ else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
{
- warning (s);
+#ifdef __CYGWIN__
+ if (strncmp (s, "cYg", 3) != 0)
+#endif
+ warning (("%s"), s);
}
+#ifdef __COPY_CONTEXT_SIZE
else
{
+ /* Got a cygwin signal marker. A cygwin signal is followed by the signal number
+ itself and then optionally followed by the thread id and address to saved context
+ within the DLL. If these are supplied, then the given thread is assumed to have
+ issued the signal and the context from the thread is assumed to be stored at the
+ given address in the inferior. Tell gdb to treat this like a real signal. */
char *p;
- /*last_sig = */strtol(s + sizeof(CYGWIN_SIGNAL_STRING) - 1, &p, 0);
- if (gotasig = (ourstatus->value.sig = target_signal_from_host (last_sig)))
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
+ int gotasig = target_signal_from_host (sig);
+ ourstatus->value.sig = gotasig;
+ if (gotasig)
+ {
+ LPCVOID x;
+ DWORD n;
+ ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ retval = strtoul (p, &p, 0);
+ if (!retval)
+ retval = main_thread_id;
+ else if ((x = (LPCVOID) strtoul (p, &p, 0))
+ && ReadProcessMemory (current_process_handle, x,
+ &saved_context, __COPY_CONTEXT_SIZE, &n)
+ && n == __COPY_CONTEXT_SIZE)
+ have_saved_context = 1;
+ current_event.dwThreadId = retval;
+ }
+ }
+#endif
+
+ if (s)
+ xfree (s);
+ return retval;
+}
+
+static int
+display_selector (HANDLE thread, DWORD sel)
+{
+ LDT_ENTRY info;
+ if (GetThreadSelectorEntry (thread, sel, &info))
+ {
+ int base, limit;
+ printf_filtered ("0x%03lx: ", sel);
+ if (!info.HighWord.Bits.Pres)
+ {
+ puts_filtered ("Segment not present\n");
+ return 0;
+ }
+ base = (info.HighWord.Bits.BaseHi << 24) +
+ (info.HighWord.Bits.BaseMid << 16)
+ + info.BaseLow;
+ limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
+ if (info.HighWord.Bits.Granularity)
+ limit = (limit << 12) | 0xfff;
+ printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
+ if (info.HighWord.Bits.Default_Big)
+ puts_filtered(" 32-bit ");
+ else
+ puts_filtered(" 16-bit ");
+ switch ((info.HighWord.Bits.Type & 0xf) >> 1)
+ {
+ case 0:
+ puts_filtered ("Data (Read-Only, Exp-up");
+ break;
+ case 1:
+ puts_filtered ("Data (Read/Write, Exp-up");
+ break;
+ case 2:
+ puts_filtered ("Unused segment (");
+ break;
+ case 3:
+ puts_filtered ("Data (Read/Write, Exp-down");
+ break;
+ case 4:
+ puts_filtered ("Code (Exec-Only, N.Conf");
+ break;
+ case 5:
+ puts_filtered ("Code (Exec/Read, N.Conf");
+ break;
+ case 6:
+ puts_filtered ("Code (Exec-Only, Conf");
+ break;
+ case 7:
+ puts_filtered ("Code (Exec/Read, Conf");
+ break;
+ default:
+ printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
+ }
+ if ((info.HighWord.Bits.Type & 0x1) == 0)
+ puts_filtered(", N.Acc");
+ puts_filtered (")\n");
+ if ((info.HighWord.Bits.Type & 0x10) == 0)
+ puts_filtered("System selector ");
+ printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
+ if (info.HighWord.Bits.Granularity)
+ puts_filtered ("Page granular.\n");
+ else
+ puts_filtered ("Byte granular.\n");
+ return 1;
+ }
+ else
+ {
+ printf_filtered ("Invalid selector 0x%lx.\n",sel);
+ return 0;
+ }
+}
+
+static void
+display_selectors (char * args, int from_tty)
+{
+ if (!current_thread)
+ {
+ puts_filtered ("Impossible to display selectors now.\n");
+ return;
+ }
+ if (!args)
+ {
+
+ puts_filtered ("Selector $cs\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegCs);
+ puts_filtered ("Selector $ds\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegDs);
+ puts_filtered ("Selector $es\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegEs);
+ puts_filtered ("Selector $ss\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegSs);
+ puts_filtered ("Selector $fs\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegFs);
+ puts_filtered ("Selector $gs\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegGs);
+ }
+ else
+ {
+ int sel;
+ sel = parse_and_eval_long (args);
+ printf_filtered ("Selector \"%s\"\n",args);
+ display_selector (current_thread->h, sel);
}
+}
+
+static struct cmd_list_element *info_w32_cmdlist = NULL;
- free (s);
- return gotasig;
+static void
+info_w32_command (char *args, int from_tty)
+{
+ help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
}
+
+#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
+ printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
+ (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
+
static int
handle_exception (struct target_waitstatus *ourstatus)
{
- int i;
- int done = 0;
thread_info *th;
+ DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
ourstatus->kind = TARGET_WAITKIND_STOPPED;
/* Record the context of the current thread */
th = thread_rec (current_event.dwThreadId, -1);
- switch (current_event.u.Exception.ExceptionRecord.ExceptionCode)
+ switch (code)
{
case EXCEPTION_ACCESS_VIOLATION:
- DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+#ifdef __CYGWIN__
+ {
+ /* See if the access violation happened within the cygwin DLL itself. Cygwin uses
+ a kind of exception handling to deal with passed-in invalid addresses. gdb
+ should not treat these as real SEGVs since they will be silently handled by
+ cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process
+ and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up
+ within the text segment of the DLL itself. */
+ char *fn;
+ bfd_vma addr = (bfd_vma) current_event.u.Exception.ExceptionRecord.ExceptionAddress;
+ if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end))
+ || (find_pc_partial_function (addr, &fn, NULL, NULL)
+ && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0))
+ return 0;
+ }
+#endif
break;
case STATUS_STACK_OVERFLOW:
- DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
break;
+ case STATUS_FLOAT_DENORMAL_OPERAND:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_INEXACT_RESULT:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_INVALID_OPERATION:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_STACK_CHECK:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_UNDERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_DIVIDE_BY_ZERO:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_INTEGER_DIVIDE_BY_ZERO:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_INTEGER_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
case EXCEPTION_BREAKPOINT:
- DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case DBG_CONTROL_C:
- DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
+ ourstatus->value.sig = TARGET_SIGNAL_INT;
+ break;
+ case DBG_CONTROL_BREAK:
+ DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
ourstatus->value.sig = TARGET_SIGNAL_INT;
- /* User typed CTRL-C. Continue with this status */
- last_sig = SIGINT; /* FIXME - should check pass state */
break;
case EXCEPTION_SINGLE_STEP:
- DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
+ case EXCEPTION_ILLEGAL_INSTRUCTION:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
+ ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ break;
+ case EXCEPTION_PRIV_INSTRUCTION:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
+ ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ break;
+ case EXCEPTION_NONCONTINUABLE_EXCEPTION:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
+ ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ break;
default:
- /* This may be a structured exception handling exception. In
- that case, we want to let the program try to handle it, and
- only break if we see the exception a second time. */
+ /* Treat unhandled first chance exceptions specially. */
if (current_event.u.Exception.dwFirstChance)
- return 0;
-
- printf_unfiltered ("gdb: unknown target exception 0x%08x at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionCode,
- current_event.u.Exception.ExceptionRecord.ExceptionAddress);
+ return -1;
+ printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
+ current_event.u.Exception.ExceptionRecord.ExceptionCode,
+ (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
break;
}
exception_count++;
+ last_sig = ourstatus->value.sig;
return 1;
}
/* Resume all artificially suspended threads if we are continuing
execution */
static BOOL
-child_continue (DWORD continue_status, int id)
+win32_continue (DWORD continue_status, int id)
{
int i;
thread_info *th;
BOOL res;
- DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n",
- current_event.dwProcessId, current_event.dwThreadId));
- if (res = ContinueDebugEvent (current_event.dwProcessId,
- current_event.dwThreadId,
- continue_status))
- for (th = &thread_head; (th = th->next) != NULL; )
- if (((id == -1) || (id == th->id)) && th->suspend_count)
+ DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
+ current_event.dwProcessId, current_event.dwThreadId,
+ continue_status == DBG_CONTINUE ?
+ "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
+ res = ContinueDebugEvent (current_event.dwProcessId,
+ current_event.dwThreadId,
+ continue_status);
+ if (res)
+ for (th = &thread_head; (th = th->next) != NULL;)
+ if (((id == -1) || (id == (int) th->id)) && th->suspend_count)
{
+
for (i = 0; i < th->suspend_count; i++)
(void) ResumeThread (th->h);
th->suspend_count = 0;
+ if (debug_registers_changed)
+ {
+ /* Only change the value of the debug registers */
+ th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ /* th->context.Dr6 = dr[6];
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr[7];
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
}
+ debug_registers_changed = 0;
return res;
}
-static int
-child_wait (int pid, struct target_waitstatus *ourstatus)
+/* Called in pathological case where Windows fails to send a
+ CREATE_PROCESS_DEBUG_EVENT after an attach. */
+static DWORD
+fake_create_process (void)
{
- /* We loop when we get a non-standard exception rather than return
- with a SPURIOUS because resume can try and step or modify things,
- which needs a current_thread->h. But some of these exceptions mark
- the birth or death of threads, which mean that the current thread
- isn't necessarily what you think it is. */
-
- while (1)
- {
- DWORD continue_status;
- BOOL t = WaitForDebugEvent (¤t_event, INFINITE);
- char *p;
- thread_info *th;
- int sig;
+ current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
+ current_event.dwProcessId);
+ main_thread_id = current_event.dwThreadId;
+ current_thread = win32_add_thread (main_thread_id,
+ current_event.u.CreateThread.hThread);
+ return main_thread_id;
+}
- event_count++;
+static void
+win32_resume (ptid_t ptid, int step, enum target_signal sig)
+{
+ thread_info *th;
+ DWORD continue_status = DBG_CONTINUE;
- continue_status = DBG_CONTINUE;
+ int pid = PIDGET (ptid);
- switch (current_event.dwDebugEventCode)
+ if (sig != TARGET_SIGNAL_0)
+ {
+ if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
- case CREATE_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "CREATE_THREAD_DEBUG_EVENT"));
- /* Record the existence of this thread */
- child_add_thread (current_event.dwThreadId,
- current_event.u.CreateThread.hThread);
- if (info_verbose)
- printf_unfiltered ("[New %s]\n",
- target_pid_to_str (current_event.dwThreadId));
- break;
+ DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
+ }
+ else if (sig == last_sig)
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ else
+#if 0
+/* This code does not seem to work, because
+ the kernel does probably not consider changes in the ExceptionRecord
+ structure when passing the exception to the inferior.
+ Note that this seems possible in the exception handler itself. */
+ {
+ int i;
+ for (i = 0; xlate[i].them != -1; i++)
+ if (xlate[i].us == sig)
+ {
+ current_event.u.Exception.ExceptionRecord.ExceptionCode =
+ xlate[i].them;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ }
+ if (continue_status == DBG_CONTINUE)
+ {
+ DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
+ }
+ }
+#endif
+ DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
+ last_sig));
+ }
- case EXIT_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
- child_delete_thread (current_event.dwThreadId);
- break;
+ last_sig = TARGET_SIGNAL_0;
- case CREATE_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "CREATE_PROCESS_DEBUG_EVENT"));
- current_process_handle = current_event.u.CreateProcessInfo.hProcess;
+ DEBUG_EXEC (("gdb: win32_resume (pid=%d, step=%d, sig=%d);\n",
+ pid, step, sig));
- main_thread_id = inferior_pid = current_event.dwThreadId;
- /* Add the main thread */
- current_thread = child_add_thread (inferior_pid,
- current_event.u.CreateProcessInfo.hThread);
- break;
+ /* Get context for currently selected thread */
+ th = thread_rec (current_event.dwThreadId, FALSE);
+ if (th)
+ {
+ if (step)
+ {
+ /* Single step by setting t bit */
+ win32_fetch_inferior_registers (get_current_regcache (),
+ gdbarch_ps_regnum (current_gdbarch));
+ th->context.EFlags |= FLAG_TRACE_BIT;
+ }
+
+ if (th->context.ContextFlags)
+ {
+ if (debug_registers_changed)
+ {
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ /* th->context.Dr6 = dr[6];
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr[7];
+ }
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
+ }
+
+ /* Allow continuing with the same signal that interrupted us.
+ Otherwise complain. */
+
+ win32_continue (continue_status, pid);
+}
- case EXIT_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "EXIT_PROCESS_DEBUG_EVENT"));
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
- CloseHandle (current_process_handle);
- return current_event.dwProcessId;
+/* Get the next event from the child. Return 1 if the event requires
+ handling by WFI (or whatever).
+ */
+static int
+get_win32_debug_event (int pid, struct target_waitstatus *ourstatus)
+{
+ BOOL debug_event;
+ DWORD continue_status, event_code;
+ thread_info *th;
+ static thread_info dummy_thread_info;
+ int retval = 0;
+ ptid_t ptid = {-1};
+
+ last_sig = TARGET_SIGNAL_0;
+
+ if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
+ goto out;
+
+ event_count++;
+ continue_status = DBG_CONTINUE;
+
+ event_code = current_event.dwDebugEventCode;
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ th = NULL;
+ have_saved_context = 0;
+
+ switch (event_code)
+ {
+ case CREATE_THREAD_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_THREAD_DEBUG_EVENT"));
+ if (saw_create != 1)
+ {
+ if (!saw_create && attach_flag)
+ {
+ /* Kludge around a Windows bug where first event is a create
+ thread event. Caused when attached process does not have
+ a main thread. */
+ retval = ourstatus->value.related_pid = fake_create_process ();
+ saw_create++;
+ }
break;
+ }
+ /* Record the existence of this thread */
+ th = win32_add_thread (current_event.dwThreadId,
+ current_event.u.CreateThread.hThread);
+ if (info_verbose)
+ printf_unfiltered ("[New %s]\n",
+ target_pid_to_str (
+ pid_to_ptid (current_event.dwThreadId)));
+ retval = current_event.dwThreadId;
+ break;
+
+ case EXIT_THREAD_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_THREAD_DEBUG_EVENT"));
+ if (current_event.dwThreadId != main_thread_id)
+ {
+ win32_delete_thread (current_event.dwThreadId);
+ th = &dummy_thread_info;
+ }
+ break;
- case LOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "LOAD_DLL_DEBUG_EVENT"));
- catch_errors (handle_load_dll, NULL, "", RETURN_MASK_ALL);
- registers_changed(); /* mark all regs invalid */
+ case CREATE_PROCESS_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_PROCESS_DEBUG_EVENT"));
+ CloseHandle (current_event.u.CreateProcessInfo.hFile);
+ if (++saw_create != 1)
+ {
+ CloseHandle (current_event.u.CreateProcessInfo.hProcess);
break;
+ }
- case UNLOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "UNLOAD_DLL_DEBUG_EVENT"));
- break; /* FIXME: don't know what to do here */
-
- case EXCEPTION_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "EXCEPTION_DEBUG_EVENT"));
- if (handle_exception (ourstatus))
- return current_event.dwThreadId;
+ current_process_handle = current_event.u.CreateProcessInfo.hProcess;
+ if (main_thread_id)
+ win32_delete_thread (main_thread_id);
+ main_thread_id = current_event.dwThreadId;
+ /* Add the main thread */
+ th = win32_add_thread (main_thread_id,
+ current_event.u.CreateProcessInfo.hThread);
+ retval = ourstatus->value.related_pid = current_event.dwThreadId;
+ break;
+
+ case EXIT_PROCESS_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_PROCESS_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
+ ourstatus->kind = TARGET_WAITKIND_EXITED;
+ ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
+ CloseHandle (current_process_handle);
+ retval = main_thread_id;
+ break;
+
+ case LOAD_DLL_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "LOAD_DLL_DEBUG_EVENT"));
+ CloseHandle (current_event.u.LoadDll.hFile);
+ if (saw_create != 1)
+ break;
+ catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
+ ourstatus->kind = TARGET_WAITKIND_LOADED;
+ ourstatus->value.integer = 0;
+ retval = main_thread_id;
+ break;
+
+ case UNLOAD_DLL_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "UNLOAD_DLL_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
+ catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
+ ourstatus->kind = TARGET_WAITKIND_LOADED;
+ ourstatus->value.integer = 0;
+ retval = main_thread_id;
+ break;
+
+ case EXCEPTION_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXCEPTION_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
+ switch (handle_exception (ourstatus))
+ {
+ case 0:
continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
-
- case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "OUTPUT_DEBUG_STRING_EVENT"));
- if (handle_output_debug_string (ourstatus))
- return main_thread_id;
+ case 1:
+ retval = current_event.dwThreadId;
break;
- default:
- printf_unfiltered ("gdb: kernel event for pid=%d tid=%d\n",
- current_event.dwProcessId,
- current_event.dwThreadId);
- printf_unfiltered (" unknown event code %d\n",
- current_event.dwDebugEventCode);
+ case -1:
+ last_sig = 1;
+ continue_status = -1;
break;
}
+ break;
+
+ case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "OUTPUT_DEBUG_STRING_EVENT"));
+ if (saw_create != 1)
+ break;
+ retval = handle_output_debug_string (ourstatus);
+ break;
+
+ default:
+ if (saw_create != 1)
+ break;
+ printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
+ (DWORD) current_event.dwProcessId,
+ (DWORD) current_event.dwThreadId);
+ printf_unfiltered (" unknown event code %ld\n",
+ current_event.dwDebugEventCode);
+ break;
+ }
+
+ if (!retval || saw_create != 1)
+ {
+ if (continue_status == -1)
+ win32_resume (ptid, 0, 1);
+ else
+ CHECK (win32_continue (continue_status, -1));
+ }
+ else
+ {
+ inferior_ptid = pid_to_ptid (retval);
+ current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
+ }
+
+out:
+ return retval;
+}
+
+/* Wait for interesting events to occur in the target process. */
+static ptid_t
+win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
+{
+ int pid = PIDGET (ptid);
+
+ target_terminal_ours ();
+
+ /* We loop when we get a non-standard exception rather than return
+ with a SPURIOUS because resume can try and step or modify things,
+ which needs a current_thread->h. But some of these exceptions mark
+ the birth or death of threads, which mean that the current thread
+ isn't necessarily what you think it is. */
+
+ while (1)
+ {
+ int retval = get_win32_debug_event (pid, ourstatus);
+ if (retval)
+ return pid_to_ptid (retval);
+ else
+ {
+ int detach = 0;
+
+ if (deprecated_ui_loop_hook != NULL)
+ detach = deprecated_ui_loop_hook (0);
+
+ if (detach)
+ win32_kill_inferior ();
+ }
+ }
+}
+
+static void
+do_initial_win32_stuff (DWORD pid)
+{
+ extern int stop_after_trap;
+ int i;
+
+ last_sig = TARGET_SIGNAL_0;
+ event_count = 0;
+ exception_count = 0;
+ debug_registers_changed = 0;
+ debug_registers_used = 0;
+ for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
+ dr[i] = 0;
+#ifdef __CYGWIN__
+ cygwin_load_start = cygwin_load_end = 0;
+#endif
+ current_event.dwProcessId = pid;
+ memset (¤t_event, 0, sizeof (current_event));
+ push_target (&win32_ops);
+ disable_breakpoints_in_shlibs ();
+ win32_clear_solib ();
+ clear_proceed_status ();
+ init_wait_for_inferior ();
+
+ terminal_init_inferior_with_pgrp (pid);
+ target_terminal_inferior ();
+
+ while (1)
+ {
+ stop_after_trap = 1;
+ wait_for_inferior ();
+ if (stop_signal != TARGET_SIGNAL_TRAP)
+ resume (0, stop_signal);
+ else
+ break;
+ }
+ stop_after_trap = 0;
+ return;
+}
+
+/* Since Windows XP, detaching from a process is supported by Windows.
+ The following code tries loading the appropriate functions dynamically.
+ If loading these functions succeeds use them to actually detach from
+ the inferior process, otherwise behave as usual, pretending that
+ detach has worked. */
+static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
+static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
- CHECK (child_continue (continue_status, -1));
+static int
+has_detach_ability (void)
+{
+ static HMODULE kernel32 = NULL;
+
+ if (!kernel32)
+ kernel32 = LoadLibrary ("kernel32.dll");
+ if (kernel32)
+ {
+ if (!DebugSetProcessKillOnExit)
+ DebugSetProcessKillOnExit = GetProcAddress (kernel32,
+ "DebugSetProcessKillOnExit");
+ if (!DebugActiveProcessStop)
+ DebugActiveProcessStop = GetProcAddress (kernel32,
+ "DebugActiveProcessStop");
+ if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
+ return 1;
}
+ return 0;
}
-/* Attach to process PID, then initialize for debugging it. */
+/* Try to set or remove a user privilege to the current process. Return -1
+ if that fails, the previous setting of that privilege otherwise.
+
+ This code is copied from the Cygwin source code and rearranged to allow
+ dynamically loading of the needed symbols from advapi32 which is only
+ available on NT/2K/XP. */
+static int
+set_process_privilege (const char *privilege, BOOL enable)
+{
+ static HMODULE advapi32 = NULL;
+ static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
+ static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID);
+ static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
+ DWORD, PTOKEN_PRIVILEGES, PDWORD);
+
+ HANDLE token_hdl = NULL;
+ LUID restore_priv;
+ TOKEN_PRIVILEGES new_priv, orig_priv;
+ int ret = -1;
+ DWORD size;
+
+ if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */
+ return 0;
+
+ if (!advapi32)
+ {
+ if (!(advapi32 = LoadLibrary ("advapi32.dll")))
+ goto out;
+ if (!OpenProcessToken)
+ OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
+ if (!LookupPrivilegeValue)
+ LookupPrivilegeValue = GetProcAddress (advapi32,
+ "LookupPrivilegeValueA");
+ if (!AdjustTokenPrivileges)
+ AdjustTokenPrivileges = GetProcAddress (advapi32,
+ "AdjustTokenPrivileges");
+ if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
+ {
+ advapi32 = NULL;
+ goto out;
+ }
+ }
+ if (!OpenProcessToken (GetCurrentProcess (),
+ TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
+ &token_hdl))
+ goto out;
+
+ if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
+ goto out;
+
+ new_priv.PrivilegeCount = 1;
+ new_priv.Privileges[0].Luid = restore_priv;
+ new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
+
+ if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
+ sizeof orig_priv, &orig_priv, &size))
+ goto out;
+#if 0
+ /* Disabled, otherwise every `attach' in an unprivileged user session
+ would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
+ win32_attach(). */
+ /* AdjustTokenPrivileges returns TRUE even if the privilege could not
+ be enabled. GetLastError () returns an correct error code, though. */
+ if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
+ goto out;
+#endif
+
+ ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
+
+out:
+ if (token_hdl)
+ CloseHandle (token_hdl);
+
+ return ret;
+}
+
+/* Attach to process PID, then initialize for debugging it. */
static void
-child_attach (args, from_tty)
- char *args;
- int from_tty;
+win32_attach (char *args, int from_tty)
{
BOOL ok;
+ DWORD pid;
if (!args)
- error_no_arg ("process-id to attach");
+ error_no_arg (_("process-id to attach"));
- current_event.dwProcessId = strtoul (args, 0, 0);
+ if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
+ {
+ printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
+ printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
+ }
- ok = DebugActiveProcess (current_event.dwProcessId);
+ pid = strtoul (args, 0, 0); /* Windows pid */
+ win32_init_thread_list ();
+ ok = DebugActiveProcess (pid);
+ saw_create = 0;
+
+#ifdef __CYGWIN__
if (!ok)
- error ("Can't attach to process.");
+ {
+ /* Try fall back to Cygwin pid */
+ pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
- exception_count = 0;
- event_count = 0;
+ if (pid > 0)
+ ok = DebugActiveProcess (pid);
+ }
+#endif
+
+ if (!ok)
+ error (_("Can't attach to process."));
+
+ if (has_detach_ability ())
+ DebugSetProcessKillOnExit (FALSE);
+
+ attach_flag = 1;
if (from_tty)
{
if (exec_file)
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
- target_pid_to_str (current_event.dwProcessId));
+ target_pid_to_str (pid_to_ptid (pid)));
else
printf_unfiltered ("Attaching to %s\n",
- target_pid_to_str (current_event.dwProcessId));
+ target_pid_to_str (pid_to_ptid (pid)));
gdb_flush (gdb_stdout);
}
- push_target (&child_ops);
+ do_initial_win32_stuff (pid);
+ target_terminal_ours ();
}
static void
-child_detach (args, from_tty)
- char *args;
- int from_tty;
+win32_detach (char *args, int from_tty)
{
- if (from_tty)
+ int detached = 1;
+
+ if (has_detach_ability ())
+ {
+ ptid_t ptid = {-1};
+ win32_resume (ptid, 0, TARGET_SIGNAL_0);
+
+ if (!DebugActiveProcessStop (current_event.dwProcessId))
+ {
+ error (_("Can't detach process %lu (error %lu)"),
+ current_event.dwProcessId, GetLastError ());
+ detached = 0;
+ }
+ DebugSetProcessKillOnExit (FALSE);
+ }
+ if (detached && from_tty)
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
- printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
- target_pid_to_str (inferior_pid));
+ printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
+ current_event.dwProcessId);
gdb_flush (gdb_stdout);
}
- inferior_pid = 0;
- unpush_target (&child_ops);
+ inferior_ptid = null_ptid;
+ unpush_target (&win32_ops);
+}
+
+static char *
+win32_pid_to_exec_file (int pid)
+{
+ /* Try to find the process path using the Cygwin internal process list
+ pid isn't a valid pid, unfortunately. Use current_event.dwProcessId
+ instead. */
+
+ static char path[MAX_PATH + 1];
+ char *path_ptr = NULL;
+
+#ifdef __CYGWIN__
+ /* TODO: Also find native Windows processes using CW_GETPINFO_FULL. */
+ int cpid;
+ struct external_pinfo *pinfo;
+
+ cygwin_internal (CW_LOCK_PINFO, 1000);
+ for (cpid = 0;
+ (pinfo = (struct external_pinfo *)
+ cygwin_internal (CW_GETPINFO, cpid | CW_NEXTPID));
+ cpid = pinfo->pid)
+ {
+ if (pinfo->dwProcessId == current_event.dwProcessId) /* Got it */
+ {
+ cygwin_conv_to_full_posix_path (pinfo->progname, path);
+ path_ptr = path;
+ break;
+ }
+ }
+ cygwin_internal (CW_UNLOCK_PINFO);
+#endif
+
+ return path_ptr;
}
/* Print status information about what we're accessing. */
static void
-child_files_info (ignore)
- struct target_ops *ignore;
+win32_files_info (struct target_ops *ignore)
{
printf_unfiltered ("\tUsing the running image of %s %s.\n",
- attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
+ attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
}
-/* ARGSUSED */
static void
-child_open (arg, from_tty)
- char *arg;
- int from_tty;
+win32_open (char *arg, int from_tty)
{
- error ("Use the \"run\" command to start a Unix child process.");
+ error (_("Use the \"run\" command to start a Unix child process."));
}
-/* Start an inferior win32 child process and sets inferior_pid to its pid.
+/* Start an inferior win32 child process and sets inferior_ptid to its pid.
EXEC_FILE is the file to run.
ALLARGS is a string containing the arguments to the program.
ENV is the environment vector to pass. Errors reported with error(). */
static void
-child_create_inferior (exec_file, allargs, env)
- char *exec_file;
- char *allargs;
- char **env;
+win32_create_inferior (char *exec_file, char *allargs, char **in_env,
+ int from_tty)
{
- char real_path[MAXPATHLEN];
- char *winenv;
- char *temp;
- int envlen;
- int i;
-
STARTUPINFO si;
PROCESS_INFORMATION pi;
- struct target_waitstatus dummy;
BOOL ret;
DWORD flags;
char *args;
+ char real_path[MAXPATHLEN];
+ char *toexec;
+ char shell[MAX_PATH + 1]; /* Path to shell */
+ const char *sh;
+ int tty;
+ int ostdin, ostdout, ostderr;
+ const char *inferior_io_terminal = get_inferior_io_terminal ();
if (!exec_file)
- {
- error ("No executable specified, use `target exec'.\n");
- }
+ error (_("No executable specified, use `target exec'."));
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
- cygwin32_conv_to_win32_path (exec_file, real_path);
-
+#ifdef __CYGWIN__
+ if (!useshell)
+ {
+ flags = DEBUG_ONLY_THIS_PROCESS;
+ cygwin_conv_to_win32_path (exec_file, real_path);
+ toexec = real_path;
+ }
+ else
+ {
+ char *newallargs;
+ sh = getenv ("SHELL");
+ if (!sh)
+ sh = "/bin/sh";
+ cygwin_conv_to_win32_path (sh, shell);
+ newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
+ + strlen (allargs) + 2);
+ sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
+ allargs = newallargs;
+ toexec = shell;
+ flags = DEBUG_PROCESS;
+ }
+#else
+ toexec = exec_file;
flags = DEBUG_ONLY_THIS_PROCESS;
+#endif
if (new_group)
flags |= CREATE_NEW_PROCESS_GROUP;
if (new_console)
flags |= CREATE_NEW_CONSOLE;
- args = alloca (strlen (real_path) + strlen (allargs) + 2);
-
- strcpy (args, real_path);
+ attach_flag = 0;
+ args = alloca (strlen (toexec) + strlen (allargs) + 2);
+ strcpy (args, toexec);
strcat (args, " ");
strcat (args, allargs);
+#ifdef __CYGWIN__
/* Prepare the environment vars for CreateProcess. */
- {
- /* This code use to assume all env vars were file names and would
- translate them all to win32 style. That obviously doesn't work in the
- general case. The current rule is that we only translate PATH.
- We need to handle PATH because we're about to call CreateProcess and
- it uses PATH to find DLL's. Fortunately PATH has a well-defined value
- in both posix and win32 environments. cygwin.dll will change it back
- to posix style if necessary. */
-
- static const char *conv_path_names[] =
- {
- "PATH=",
- 0
- };
-
- /* CreateProcess takes the environment list as a null terminated set of
- strings (i.e. two nulls terminate the list). */
-
- /* Get total size for env strings. */
- for (envlen = 0, i = 0; env[i] && *env[i]; i++)
- {
- int j, len;
-
- for (j = 0; conv_path_names[j]; j++)
- {
- len = strlen (conv_path_names[j]);
- if (strncmp (conv_path_names[j], env[i], len) == 0)
- {
- if (cygwin32_posix_path_list_p (env[i] + len))
- envlen += len
- + cygwin32_posix_to_win32_path_list_buf_size (env[i] + len);
- else
- envlen += strlen (env[i]) + 1;
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- envlen += strlen (env[i]) + 1;
- }
-
- winenv = alloca (envlen + 1);
-
- /* Copy env strings into new buffer. */
- for (temp = winenv, i = 0; env[i] && *env[i]; i++)
- {
- int j, len;
+ cygwin_internal (CW_SYNC_WINENV);
- for (j = 0; conv_path_names[j]; j++)
- {
- len = strlen (conv_path_names[j]);
- if (strncmp (conv_path_names[j], env[i], len) == 0)
- {
- if (cygwin32_posix_path_list_p (env[i] + len))
- {
- memcpy (temp, env[i], len);
- cygwin32_posix_to_win32_path_list (env[i] + len, temp + len);
- }
- else
- strcpy (temp, env[i]);
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- strcpy (temp, env[i]);
-
- temp += strlen (temp) + 1;
- }
-
- /* Final nil string to terminate new env. */
- *temp = 0;
- }
+ if (!inferior_io_terminal)
+ tty = ostdin = ostdout = ostderr = -1;
+ else
+ {
+ tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
+ if (tty < 0)
+ {
+ print_sys_errmsg (inferior_io_terminal, errno);
+ ostdin = ostdout = ostderr = -1;
+ }
+ else
+ {
+ ostdin = dup (0);
+ ostdout = dup (1);
+ ostderr = dup (2);
+ dup2 (tty, 0);
+ dup2 (tty, 1);
+ dup2 (tty, 2);
+ }
+ }
+#endif
+ win32_init_thread_list ();
ret = CreateProcess (0,
- args, /* command line */
+ args, /* command line */
NULL, /* Security */
NULL, /* thread */
TRUE, /* inherit handles */
flags, /* start flags */
- winenv,
+ NULL, /* environment */
NULL, /* current directory */
&si,
&pi);
+
+#ifdef __CYGWIN__
+ if (tty >= 0)
+ {
+ close (tty);
+ dup2 (ostdin, 0);
+ dup2 (ostdout, 1);
+ dup2 (ostderr, 2);
+ close (ostdin);
+ close (ostdout);
+ close (ostderr);
+ }
+#endif
+
if (!ret)
- error ("Error creating process %s, (error %d)\n", exec_file, GetLastError());
+ error (_("Error creating process %s, (error %d)."),
+ exec_file, (unsigned) GetLastError ());
- exception_count = 0;
- event_count = 0;
+ CloseHandle (pi.hThread);
+ CloseHandle (pi.hProcess);
- current_process_handle = pi.hProcess;
- current_event.dwProcessId = pi.dwProcessId;
- memset (¤t_event, 0, sizeof (current_event));
- inferior_pid = current_event.dwThreadId = pi.dwThreadId;
- push_target (&child_ops);
- child_init_thread_list ();
- init_wait_for_inferior ();
- clear_proceed_status ();
- target_terminal_init ();
- target_terminal_inferior ();
+ if (useshell && shell[0] != '\0')
+ saw_create = -1;
+ else
+ saw_create = 0;
- /* Ignore the first trap */
- child_wait (inferior_pid, &dummy);
+ do_initial_win32_stuff (pi.dwProcessId);
- proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
+ /* win32_continue (DBG_CONTINUE, -1); */
}
static void
-child_mourn_inferior ()
+win32_mourn_inferior (void)
{
- (void) child_continue (DBG_CONTINUE, -1);
- unpush_target (&child_ops);
+ (void) win32_continue (DBG_CONTINUE, -1);
+ i386_cleanup_dregs();
+ unpush_target (&win32_ops);
generic_mourn_inferior ();
}
^C on the controlling terminal. */
static void
-child_stop ()
+win32_stop (void)
{
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
- CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0));
- registers_changed(); /* refresh register state */
+ CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
+ registers_changed (); /* refresh register state */
}
-int
-child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
- int write, struct target_ops *target)
+static int
+win32_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
+ int write, struct mem_attrib *mem,
+ struct target_ops *target)
{
- DWORD done;
+ DWORD done = 0;
if (write)
{
- DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08x\n",
- len, memaddr));
- WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
- len, &done);
+ DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
+ len, (DWORD) memaddr));
+ if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
+ len, &done))
+ done = 0;
FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
}
else
{
- DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08x\n",
- len, memaddr));
- ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len,
- &done);
+ DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
+ len, (DWORD) memaddr));
+ if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
+ len, &done))
+ done = 0;
}
return done;
}
-void
-child_kill_inferior (void)
+static void
+win32_kill_inferior (void)
{
CHECK (TerminateProcess (current_process_handle, 0));
for (;;)
{
- if (!child_continue (DBG_CONTINUE, -1))
+ if (!win32_continue (DBG_CONTINUE, -1))
break;
if (!WaitForDebugEvent (¤t_event, INFINITE))
break;
CHECK (CloseHandle (current_process_handle));
/* this may fail in an attached process so don't check. */
- (void) CloseHandle (current_thread->h);
- target_mourn_inferior(); /* or just child_mourn_inferior? */
+ if (current_thread && current_thread->h)
+ (void) CloseHandle (current_thread->h);
+ target_mourn_inferior (); /* or just win32_mourn_inferior? */
}
-void
-child_resume (int pid, int step, enum target_signal sig)
+static void
+win32_prepare_to_store (struct regcache *regcache)
{
- int i;
- thread_info *th;
- DWORD continue_status = last_sig > 0 && last_sig < NSIG ?
- DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
+ /* Do nothing, since we can store individual regs */
+}
- DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
- pid, step, sig));
+static int
+win32_can_run (void)
+{
+ return 1;
+}
- /* Get context for currently selected thread */
- th = thread_rec (current_event.dwThreadId, FALSE);
- if (step)
- {
-#ifdef i386
- /* Single step by setting t bit */
- child_fetch_inferior_registers (PS_REGNUM);
- th->context.EFlags |= FLAG_TRACE_BIT;
-#endif
- }
+static void
+win32_close (int x)
+{
+ DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n",
+ PIDGET (inferior_ptid)));
+}
- if (th->context.ContextFlags)
- {
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
- }
+/* Convert pid to printable format. */
+static char *
+win32_pid_to_str (ptid_t ptid)
+{
+ static char buf[80];
+ int pid = PIDGET (ptid);
- /* Allow continuing with the same signal that interrupted us.
- Otherwise complain. */
- if (sig && sig != last_sig)
- fprintf_unfiltered (gdb_stderr, "Can't send signals to the child. signal %d\n", sig);
+ if ((DWORD) pid == current_event.dwProcessId)
+ sprintf (buf, "process %d", pid);
+ else
+ sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
+ return buf;
+}
- last_sig = 0;
- child_continue (continue_status, pid);
+static LONGEST
+win32_xfer_shared_libraries (struct target_ops *ops,
+ enum target_object object, const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len)
+{
+ struct obstack obstack;
+ const char *buf;
+ LONGEST len_avail;
+ struct so_list *so;
+
+ if (writebuf)
+ return -1;
+
+ obstack_init (&obstack);
+ obstack_grow_str (&obstack, "<library-list>\n");
+ for (so = solib_start.next; so; so = so->next)
+ win32_xfer_shared_library (so->so_name, so->lm_info->load_addr, &obstack);
+ obstack_grow_str0 (&obstack, "</library-list>\n");
+
+ buf = obstack_finish (&obstack);
+ len_avail = strlen (buf);
+ if (offset >= len_avail)
+ return 0;
+
+ if (len > len_avail - offset)
+ len = len_avail - offset;
+ memcpy (readbuf, buf + offset, len);
+
+ obstack_free (&obstack, NULL);
+ return len;
}
-static void
-child_prepare_to_store ()
+static LONGEST
+win32_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
- /* Do nothing, since we can store individual regs */
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return (*ops->deprecated_xfer_memory) (offset, readbuf,
+ len, 0/*write*/, NULL, ops);
+ if (writebuf)
+ return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
+ len, 1/*write*/, NULL, ops);
+ return -1;
+
+ case TARGET_OBJECT_LIBRARIES:
+ return win32_xfer_shared_libraries (ops, object, annex, readbuf,
+ writebuf, offset, len);
+
+ default:
+ if (ops->beneath != NULL)
+ return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
+ readbuf, writebuf, offset, len);
+ return -1;
+ }
}
-static int
-child_can_run ()
+static void
+init_win32_ops (void)
{
- return 1;
+ win32_ops.to_shortname = "child";
+ win32_ops.to_longname = "Win32 child process";
+ win32_ops.to_doc = "Win32 child process (started by the \"run\" command).";
+ win32_ops.to_open = win32_open;
+ win32_ops.to_close = win32_close;
+ win32_ops.to_attach = win32_attach;
+ win32_ops.to_detach = win32_detach;
+ win32_ops.to_resume = win32_resume;
+ win32_ops.to_wait = win32_wait;
+ win32_ops.to_fetch_registers = win32_fetch_inferior_registers;
+ win32_ops.to_store_registers = win32_store_inferior_registers;
+ win32_ops.to_prepare_to_store = win32_prepare_to_store;
+ win32_ops.deprecated_xfer_memory = win32_xfer_memory;
+ win32_ops.to_xfer_partial = win32_xfer_partial;
+ win32_ops.to_files_info = win32_files_info;
+ win32_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ win32_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ win32_ops.to_terminal_init = terminal_init_inferior;
+ win32_ops.to_terminal_inferior = terminal_inferior;
+ win32_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ win32_ops.to_terminal_ours = terminal_ours;
+ win32_ops.to_terminal_save_ours = terminal_save_ours;
+ win32_ops.to_terminal_info = child_terminal_info;
+ win32_ops.to_kill = win32_kill_inferior;
+ win32_ops.to_create_inferior = win32_create_inferior;
+ win32_ops.to_mourn_inferior = win32_mourn_inferior;
+ win32_ops.to_can_run = win32_can_run;
+ win32_ops.to_thread_alive = win32_win32_thread_alive;
+ win32_ops.to_pid_to_str = win32_pid_to_str;
+ win32_ops.to_stop = win32_stop;
+ win32_ops.to_stratum = process_stratum;
+ win32_ops.to_has_all_memory = 1;
+ win32_ops.to_has_memory = 1;
+ win32_ops.to_has_stack = 1;
+ win32_ops.to_has_registers = 1;
+ win32_ops.to_has_execution = 1;
+ win32_ops.to_magic = OPS_MAGIC;
+ win32_ops.to_pid_to_exec_file = win32_pid_to_exec_file;
}
static void
-child_close ()
+set_win32_aliases (char *argv0)
{
- DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid));
+ add_info_alias ("dll", "sharedlibrary", 1);
+}
+
+void
+_initialize_win32_nat (void)
+{
+ struct cmd_list_element *c;
+
+ init_win32_ops ();
+
+ c = add_com ("dll-symbols", class_files, dll_symbol_command,
+ _("Load dll library symbols from FILE."));
+ set_cmd_completer (c, filename_completer);
+
+ add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
+
+#ifdef __CYGWIN__
+ add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
+Set use of shell to start subprocess."), _("\
+Show use of shell to start subprocess."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\
+Break when an exception is detected in the Cygwin DLL itself."), _("\
+Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+#endif
+
+ add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
+Set creation of new console when creating child process."), _("\
+Show creation of new console when creating child process."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
+Set creation of new group when creating child process."), _("\
+Show creation of new group when creating child process."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
+Set whether to display execution in child process."), _("\
+Show whether to display execution in child process."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
+Set whether to display kernel events in child process."), _("\
+Show whether to display kernel events in child process."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
+Set whether to display memory accesses in child process."), _("\
+Show whether to display memory accesses in child process."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("debugexceptions", class_support,
+ &debug_exceptions, _("\
+Set whether to display kernel exceptions in child process."), _("\
+Show whether to display kernel exceptions in child process."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_prefix_cmd ("w32", class_info, info_w32_command,
+ _("Print information specific to Win32 debugging."),
+ &info_w32_cmdlist, "info w32 ", 0, &infolist);
+
+ add_cmd ("selector", class_info, display_selectors,
+ _("Display selectors infos."),
+ &info_w32_cmdlist);
+ add_target (&win32_ops);
+ deprecated_init_ui_hook = set_win32_aliases;
}
-struct target_ops child_ops ;
+/* Hardware watchpoint support, adapted from go32-nat.c code. */
-static void
-init_child_ops(void)
+/* Pass the address ADDR to the inferior in the I'th debug register.
+ Here we just store the address in dr array, the registers will be
+ actually set up when win32_continue is called. */
+void
+cygwin_set_dr (int i, CORE_ADDR addr)
{
- child_ops.to_shortname = "child";
- child_ops.to_longname = "Win32 child process";
- child_ops.to_doc = "Win32 child process (started by the \"run\" command).";
- child_ops.to_open = child_open;
- child_ops.to_close = child_close;
- child_ops.to_attach = child_attach;
- child_ops.to_detach = child_detach;
- child_ops.to_resume = child_resume;
- child_ops.to_wait = child_wait;
- child_ops.to_fetch_registers = child_fetch_inferior_registers;
- child_ops.to_store_registers = child_store_inferior_registers;
- child_ops.to_prepare_to_store = child_prepare_to_store;
- child_ops.to_xfer_memory = child_xfer_memory;
- child_ops.to_files_info = child_files_info;
- child_ops.to_insert_breakpoint = memory_insert_breakpoint;
- child_ops.to_remove_breakpoint = memory_remove_breakpoint;
- child_ops.to_terminal_init = terminal_init_inferior;
- child_ops.to_terminal_inferior = terminal_inferior;
- child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- child_ops.to_terminal_ours = terminal_ours;
- child_ops.to_terminal_info = child_terminal_info;
- child_ops.to_kill = child_kill_inferior;
- child_ops.to_load = 0;
- child_ops.to_lookup_symbol = 0;
- child_ops.to_create_inferior = child_create_inferior;
- child_ops.to_mourn_inferior = child_mourn_inferior;
- child_ops.to_can_run = child_can_run;
- child_ops.to_notice_signals = 0;
- child_ops.to_thread_alive = win32_child_thread_alive;
- child_ops.to_stop = child_stop;
- child_ops.to_stratum = process_stratum;
- child_ops.DONT_USE = 0;
- child_ops.to_has_all_memory = 1;
- child_ops.to_has_memory = 1;
- child_ops.to_has_stack = 1;
- child_ops.to_has_registers = 1;
- child_ops.to_has_execution = 1;
- child_ops.to_sections = 0;
- child_ops.to_sections_end = 0;
- child_ops.to_magic = OPS_MAGIC;
+ if (i < 0 || i > 3)
+ internal_error (__FILE__, __LINE__,
+ _("Invalid register %d in cygwin_set_dr.\n"), i);
+ dr[i] = (unsigned) addr;
+ debug_registers_changed = 1;
+ debug_registers_used = 1;
}
+/* Pass the value VAL to the inferior in the DR7 debug control
+ register. Here we just store the address in D_REGS, the watchpoint
+ will be actually set up in win32_wait. */
void
-_initialize_inftarg ()
+cygwin_set_dr7 (unsigned val)
{
- struct cmd_list_element *c;
- init_child_ops() ;
-
- add_show_from_set
- (add_set_cmd ("new-console", class_support, var_boolean,
- (char *) &new_console,
- "Set creation of new console when creating child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("new-group", class_support, var_boolean,
- (char *) &new_group,
- "Set creation of new group when creating child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugexec", class_support, var_boolean,
- (char *) &debug_exec,
- "Set whether to display execution in child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugevents", class_support, var_boolean,
- (char *) &debug_events,
- "Set whether to display kernel events in child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugmemory", class_support, var_boolean,
- (char *) &debug_memory,
- "Set whether to display memory accesses in child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugexceptions", class_support, var_boolean,
- (char *) &debug_exceptions,
- "Set whether to display kernel exceptions in child process.",
- &setlist),
- &showlist);
-
- add_target (&child_ops);
+ dr[7] = val;
+ debug_registers_changed = 1;
+ debug_registers_used = 1;
+}
+
+/* Get the value of the DR6 debug status register from the inferior.
+ Here we just return the value stored in dr[6]
+ by the last call to thread_rec for current_event.dwThreadId id. */
+unsigned
+cygwin_get_dr6 (void)
+{
+ return dr[6];
}
/* Determine if the thread referenced by "pid" is alive
by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
it means that the pid has died. Otherwise it is assumed to be alive. */
static int
-win32_child_thread_alive (int pid)
+win32_win32_thread_alive (ptid_t ptid)
{
- return WaitForSingleObject(thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
- FALSE : TRUE;
+ int pid = PIDGET (ptid);
+
+ return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
+ FALSE : TRUE;
}
-/* Convert pid to printable format. */
-char *
-cygwin_pid_to_str (int pid)
+void
+_initialize_check_for_gdb_ini (void)
{
- static char buf[80];
- if (pid == current_event.dwProcessId)
- sprintf (buf, "process %d", pid);
- else
- sprintf (buf, "thread %d.0x%x", current_event.dwProcessId, pid);
- return buf;
+ char *homedir;
+ if (inhibit_gdbinit)
+ return;
+
+ homedir = getenv ("HOME");
+ if (homedir)
+ {
+ char *p;
+ char *oldini = (char *) alloca (strlen (homedir) +
+ sizeof ("/gdb.ini"));
+ strcpy (oldini, homedir);
+ p = strchr (oldini, '\0');
+ if (p > oldini && p[-1] != '/')
+ *p++ = '/';
+ strcpy (p, "gdb.ini");
+ if (access (oldini, 0) == 0)
+ {
+ int len = strlen (oldini);
+ char *newini = alloca (len + 1);
+ sprintf (newini, "%.*s.gdbinit",
+ (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
+ warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
+ }
+ }
}
projects / deliverable / binutils-gdb.git / blobdiff