/* Low level interface to Windows debugging, for gdbserver.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2014 Free Software Foundation, Inc.
Contributed by Leo Zayas. Based on "win32-nat.c" from 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,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include "regcache.h"
#include "gdb/signals.h"
+#include "gdb/fileio.h"
#include "mem-break.h"
#include "win32-low.h"
+#include "gdbthread.h"
+#include "dll.h"
+#include "hostio.h"
+#include <stdint.h>
#include <windows.h>
#include <winnt.h>
#include <imagehlp.h>
+#include <tlhelp32.h>
#include <psapi.h>
-#include <sys/param.h>
-#include <malloc.h>
#include <process.h>
#ifndef USE_WIN32API
#include <sys/cygwin.h>
#endif
-#define LOG 0
+#define OUTMSG(X) do { printf X; fflush (stderr); } while (0)
-#define OUTMSG(X) do { printf X; fflush (stdout); } while (0)
-#if LOG
-#define OUTMSG2(X) do { printf X; fflush (stdout); } while (0)
-#else
-#define OUTMSG2(X) do ; while (0)
-#endif
+#define OUTMSG2(X) \
+ do \
+ { \
+ if (debug_threads) \
+ { \
+ printf X; \
+ fflush (stderr); \
+ } \
+ } while (0)
#ifndef _T
#define _T(x) TEXT (x)
int using_threads = 1;
/* Globals. */
+static int attaching = 0;
static HANDLE current_process_handle = NULL;
static DWORD current_process_id = 0;
-static enum target_signal last_sig = TARGET_SIGNAL_0;
+static DWORD main_thread_id = 0;
+static enum gdb_signal last_sig = GDB_SIGNAL_0;
/* The current debug event from WaitForDebugEvent. */
static DEBUG_EVENT current_event;
-#define NUM_REGS (the_low_target.num_regs)
+/* A status that hasn't been reported to the core yet, and so
+ win32_wait should return it next, instead of fetching the next
+ debug event off the win32 API. */
+static struct target_waitstatus cached_status;
-typedef BOOL WINAPI (*winapi_DebugActiveProcessStop) (DWORD dwProcessId);
-typedef BOOL WINAPI (*winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit);
-typedef BOOL WINAPI (*winapi_DebugBreakProcess) (HANDLE);
-typedef BOOL WINAPI (*winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD);
+/* Non zero if an interrupt request is to be satisfied by suspending
+ all threads. */
+static int soft_interrupt_requested = 0;
-static DWORD main_thread_id = 0;
+/* Non zero if the inferior is stopped in a simulated breakpoint done
+ by suspending all the threads. */
+static int faked_breakpoint = 0;
+
+const struct target_desc *win32_tdesc;
-static void win32_resume (struct thread_resume *resume_info);
+#define NUM_REGS (the_low_target.num_regs)
+
+typedef BOOL (WINAPI *winapi_DebugActiveProcessStop) (DWORD dwProcessId);
+typedef BOOL (WINAPI *winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit);
+typedef BOOL (WINAPI *winapi_DebugBreakProcess) (HANDLE);
+typedef BOOL (WINAPI *winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD);
+
+static ptid_t win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus,
+ int options);
+static void win32_resume (struct thread_resume *resume_info, size_t n);
+#ifndef _WIN32_WCE
+static void win32_add_all_dlls (void);
+#endif
/* Get the thread ID from the current selected inferior (the current
thread). */
-static DWORD
-current_inferior_tid (void)
+static ptid_t
+current_inferior_ptid (void)
+{
+ return current_ptid;
+}
+
+/* The current debug event from WaitForDebugEvent. */
+static ptid_t
+debug_event_ptid (DEBUG_EVENT *event)
+{
+ return ptid_build (event->dwProcessId, event->dwThreadId, 0);
+}
+
+/* Get the thread context of the thread associated with TH. */
+
+static void
+win32_get_thread_context (win32_thread_info *th)
+{
+ memset (&th->context, 0, sizeof (CONTEXT));
+ (*the_low_target.get_thread_context) (th, ¤t_event);
+#ifdef _WIN32_WCE
+ memcpy (&th->base_context, &th->context, sizeof (CONTEXT));
+#endif
+}
+
+/* Set the thread context of the thread associated with TH. */
+
+static void
+win32_set_thread_context (win32_thread_info *th)
{
- win32_thread_info *th = inferior_target_data (current_inferior);
- return th->tid;
+#ifdef _WIN32_WCE
+ /* Calling SuspendThread on a thread that is running kernel code
+ will report that the suspending was successful, but in fact, that
+ will often not be true. In those cases, the context returned by
+ GetThreadContext will not be correct by the time the thread
+ stops, hence we can't set that context back into the thread when
+ resuming - it will most likelly crash the inferior.
+ Unfortunately, there is no way to know when the thread will
+ really stop. To work around it, we'll only write the context
+ back to the thread when either the user or GDB explicitly change
+ it between stopping and resuming. */
+ if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0)
+#endif
+ (*the_low_target.set_thread_context) (th, ¤t_event);
}
/* Find a thread record given a thread id. If GET_CONTEXT is set then
also retrieve the context for this thread. */
static win32_thread_info *
-thread_rec (DWORD id, int get_context)
+thread_rec (ptid_t ptid, int get_context)
{
struct thread_info *thread;
win32_thread_info *th;
- thread = (struct thread_info *) find_inferior_id (&all_threads, id);
+ thread = (struct thread_info *) find_inferior_id (&all_threads, ptid);
if (thread == NULL)
return NULL;
th = inferior_target_data (thread);
- if (!th->suspend_count && get_context)
+ if (get_context && th->context.ContextFlags == 0)
{
- if (id != current_event.dwThreadId)
- th->suspend_count = SuspendThread (th->h) + 1;
+ if (!th->suspended)
+ {
+ if (SuspendThread (th->h) == (DWORD) -1)
+ {
+ DWORD err = GetLastError ();
+ OUTMSG (("warning: SuspendThread failed in thread_rec, "
+ "(error %d): %s\n", (int) err, strwinerror (err)));
+ }
+ else
+ th->suspended = 1;
+ }
- (*the_low_target.get_thread_context) (th, ¤t_event);
+ win32_get_thread_context (th);
}
return th;
/* Add a thread to the thread list. */
static win32_thread_info *
-child_add_thread (DWORD tid, HANDLE h)
+child_add_thread (DWORD pid, DWORD tid, HANDLE h, void *tlb)
{
win32_thread_info *th;
+ ptid_t ptid = ptid_build (pid, tid, 0);
- if ((th = thread_rec (tid, FALSE)))
+ if ((th = thread_rec (ptid, FALSE)))
return th;
- th = (win32_thread_info *) malloc (sizeof (*th));
- memset (th, 0, sizeof (*th));
+ th = xcalloc (1, sizeof (*th));
th->tid = tid;
th->h = h;
+ th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
- add_thread (tid, th, (unsigned int) tid);
- set_inferior_regcache_data ((struct thread_info *)
- find_inferior_id (&all_threads, tid),
- new_register_cache ());
+ add_thread (ptid, th);
if (the_low_target.thread_added != NULL)
(*the_low_target.thread_added) (th);
/* Delete a thread from the list of threads. */
static void
-child_delete_thread (DWORD id)
+child_delete_thread (DWORD pid, DWORD tid)
{
struct inferior_list_entry *thread;
+ ptid_t ptid;
/* If the last thread is exiting, just return. */
- if (all_threads.head == all_threads.tail)
+ if (one_inferior_p (&all_threads))
return;
- thread = find_inferior_id (&all_threads, id);
+ ptid = ptid_build (pid, tid, 0);
+ thread = find_inferior_id (&all_threads, ptid);
if (thread == NULL)
return;
delete_thread_info (thread);
}
+/* These watchpoint related wrapper functions simply pass on the function call
+ if the low target has registered a corresponding function. */
+
+static int
+win32_insert_point (char type, CORE_ADDR addr, int len)
+{
+ if (the_low_target.insert_point != NULL)
+ return the_low_target.insert_point (type, addr, len);
+ else
+ /* Unsupported (see target.h). */
+ return 1;
+}
+
+static int
+win32_remove_point (char type, CORE_ADDR addr, int len)
+{
+ if (the_low_target.remove_point != NULL)
+ return the_low_target.remove_point (type, addr, len);
+ else
+ /* Unsupported (see target.h). */
+ return 1;
+}
+
+static int
+win32_stopped_by_watchpoint (void)
+{
+ if (the_low_target.stopped_by_watchpoint != NULL)
+ return the_low_target.stopped_by_watchpoint ();
+ else
+ return 0;
+}
+
+static CORE_ADDR
+win32_stopped_data_address (void)
+{
+ if (the_low_target.stopped_data_address != NULL)
+ return the_low_target.stopped_data_address ();
+ else
+ return 0;
+}
+
+
/* Transfer memory from/to the debugged process. */
static int
child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
int write, struct target_ops *target)
{
- SIZE_T done;
- long addr = (long) memaddr;
+ BOOL success;
+ SIZE_T done = 0;
+ DWORD lasterror = 0;
+ uintptr_t addr = (uintptr_t) memaddr;
if (write)
{
- WriteProcessMemory (current_process_handle, (LPVOID) addr,
- (LPCVOID) our, len, &done);
+ success = WriteProcessMemory (current_process_handle, (LPVOID) addr,
+ (LPCVOID) our, len, &done);
+ if (!success)
+ lasterror = GetLastError ();
FlushInstructionCache (current_process_handle, (LPCVOID) addr, len);
}
else
{
- ReadProcessMemory (current_process_handle, (LPCVOID) addr, (LPVOID) our,
- len, &done);
+ success = ReadProcessMemory (current_process_handle, (LPCVOID) addr,
+ (LPVOID) our, len, &done);
+ if (!success)
+ lasterror = GetLastError ();
}
- return done;
+ if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0)
+ return done;
+ else
+ return success ? done : -1;
}
-/* Generally, what has the program done? */
-enum target_waitkind
-{
- /* The program has exited. The exit status is in value.integer. */
- TARGET_WAITKIND_EXITED,
-
- /* The program has stopped with a signal. Which signal is in
- value.sig. */
- TARGET_WAITKIND_STOPPED,
-
- /* The program is letting us know that it dynamically loaded something
- (e.g. it called load(2) on AIX). */
- TARGET_WAITKIND_LOADED,
-
- /* The program has exec'ed a new executable file. The new file's
- pathname is pointed to by value.execd_pathname. */
- TARGET_WAITKIND_EXECD,
-
- /* Nothing interesting happened, but we stopped anyway. We take the
- chance to check if GDB requested an interrupt. */
- TARGET_WAITKIND_SPURIOUS,
-};
-
-struct target_waitstatus
-{
- enum target_waitkind kind;
-
- /* Forked child pid, execd pathname, exit status or signal number. */
- union
- {
- int integer;
- enum target_signal sig;
- int related_pid;
- char *execd_pathname;
- int syscall_id;
- }
- value;
-};
-
/* Clear out any old thread list and reinitialize it to a pristine
state. */
static void
for_each_inferior (&all_threads, delete_thread_info);
}
+/* Zero during the child initialization phase, and nonzero otherwise. */
+
+static int child_initialization_done = 0;
+
static void
-do_initial_child_stuff (DWORD pid)
+do_initial_child_stuff (HANDLE proch, DWORD pid, int attached)
{
- last_sig = TARGET_SIGNAL_0;
+ struct process_info *proc;
+
+ last_sig = GDB_SIGNAL_0;
+
+ current_process_handle = proch;
+ current_process_id = pid;
+ main_thread_id = 0;
+
+ soft_interrupt_requested = 0;
+ faked_breakpoint = 0;
memset (¤t_event, 0, sizeof (current_event));
+ proc = add_process (pid, attached);
+ proc->tdesc = win32_tdesc;
child_init_thread_list ();
+ child_initialization_done = 0;
if (the_low_target.initial_stuff != NULL)
(*the_low_target.initial_stuff) ();
+
+ cached_status.kind = TARGET_WAITKIND_IGNORE;
+
+ /* Flush all currently pending debug events (thread and dll list) up
+ to the initial breakpoint. */
+ while (1)
+ {
+ struct target_waitstatus status;
+
+ win32_wait (minus_one_ptid, &status, 0);
+
+ /* Note win32_wait doesn't return thread events. */
+ if (status.kind != TARGET_WAITKIND_LOADED)
+ {
+ cached_status = status;
+ break;
+ }
+
+ {
+ struct thread_resume resume;
+
+ resume.thread = minus_one_ptid;
+ resume.kind = resume_continue;
+ resume.sig = 0;
+
+ win32_resume (&resume, 1);
+ }
+ }
+
+#ifndef _WIN32_WCE
+ /* Now that the inferior has been started and all DLLs have been mapped,
+ we can iterate over all DLLs and load them in.
+
+ We avoid doing it any earlier because, on certain versions of Windows,
+ LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular,
+ we have seen on Windows 8.1 that the ntdll.dll load event does not
+ include the DLL name, preventing us from creating an associated SO.
+ A possible explanation is that ntdll.dll might be mapped before
+ the SO info gets created by the Windows system -- ntdll.dll is
+ the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs
+ do not seem to suffer from that problem.
+
+ Rather than try to work around this sort of issue, it is much
+ simpler to just ignore DLL load/unload events during the startup
+ phase, and then process them all in one batch now. */
+ win32_add_all_dlls ();
+#endif
+
+ child_initialization_done = 1;
}
/* Resume all artificially suspended threads if we are continuing
struct thread_info *thread = (struct thread_info *) this_thread;
int thread_id = * (int *) id_ptr;
win32_thread_info *th = inferior_target_data (thread);
- int i;
if ((thread_id == -1 || thread_id == th->tid)
- && th->suspend_count)
+ && th->suspended)
{
if (th->context.ContextFlags)
{
- (*the_low_target.set_thread_context) (th, ¤t_event);
+ win32_set_thread_context (th);
th->context.ContextFlags = 0;
}
- for (i = 0; i < th->suspend_count; i++)
- (void) ResumeThread (th->h);
- th->suspend_count = 0;
+ if (ResumeThread (th->h) == (DWORD) -1)
+ {
+ DWORD err = GetLastError ();
+ OUTMSG (("warning: ResumeThread failed in continue_one_thread, "
+ "(error %d): %s\n", (int) err, strwinerror (err)));
+ }
+ th->suspended = 0;
}
return 0;
static BOOL
child_continue (DWORD continue_status, int thread_id)
{
- BOOL res;
+ /* The inferior will only continue after the ContinueDebugEvent
+ call. */
+ find_inferior (&all_threads, continue_one_thread, &thread_id);
+ faked_breakpoint = 0;
- res = ContinueDebugEvent (current_event.dwProcessId,
- current_event.dwThreadId, continue_status);
- if (res)
- find_inferior (&all_threads, continue_one_thread, &thread_id);
+ if (!ContinueDebugEvent (current_event.dwProcessId,
+ current_event.dwThreadId,
+ continue_status))
+ return FALSE;
- return res;
+ return TRUE;
}
/* Fetch register(s) from the current thread context. */
static void
-child_fetch_inferior_registers (int r)
+child_fetch_inferior_registers (struct regcache *regcache, int r)
{
int regno;
- win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE);
- if (r == -1 || r == 0 || r > NUM_REGS)
- child_fetch_inferior_registers (NUM_REGS);
+ win32_thread_info *th = thread_rec (current_inferior_ptid (), TRUE);
+ if (r == -1 || r > NUM_REGS)
+ child_fetch_inferior_registers (regcache, NUM_REGS);
else
for (regno = 0; regno < r; regno++)
- (*the_low_target.fetch_inferior_register) (th, regno);
+ (*the_low_target.fetch_inferior_register) (regcache, th, regno);
}
/* Store a new register value into the current thread context. We don't
change the program's context until later, when we resume it. */
static void
-child_store_inferior_registers (int r)
+child_store_inferior_registers (struct regcache *regcache, int r)
{
int regno;
- win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE);
+ win32_thread_info *th = thread_rec (current_inferior_ptid (), TRUE);
if (r == -1 || r == 0 || r > NUM_REGS)
- child_store_inferior_registers (NUM_REGS);
+ child_store_inferior_registers (regcache, NUM_REGS);
else
for (regno = 0; regno < r; regno++)
- (*the_low_target.store_inferior_register) (th, regno);
+ (*the_low_target.store_inferior_register) (regcache, th, regno);
}
/* Map the Windows error number in ERROR to a locale-dependent error
LocalFree (msgbuf);
}
else
- sprintf (buf, "unknown win32 error (%ld)", error);
+ sprintf (buf, "unknown win32 error (%u)", (unsigned) error);
SetLastError (lasterr);
return buf;
}
+static BOOL
+create_process (const char *program, char *args,
+ DWORD flags, PROCESS_INFORMATION *pi)
+{
+ BOOL ret;
+
+#ifdef _WIN32_WCE
+ wchar_t *p, *wprogram, *wargs;
+ size_t argslen;
+
+ wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t));
+ mbstowcs (wprogram, program, strlen (program) + 1);
+
+ for (p = wprogram; *p; ++p)
+ if (L'/' == *p)
+ *p = L'\\';
+
+ argslen = strlen (args);
+ wargs = alloca ((argslen + 1) * sizeof (wchar_t));
+ mbstowcs (wargs, args, argslen + 1);
+
+ ret = CreateProcessW (wprogram, /* image name */
+ wargs, /* command line */
+ NULL, /* security, not supported */
+ NULL, /* thread, not supported */
+ FALSE, /* inherit handles, not supported */
+ flags, /* start flags */
+ NULL, /* environment, not supported */
+ NULL, /* current directory, not supported */
+ NULL, /* start info, not supported */
+ pi); /* proc info */
+#else
+ STARTUPINFOA si = { sizeof (STARTUPINFOA) };
+
+ ret = CreateProcessA (program, /* image name */
+ args, /* command line */
+ NULL, /* security */
+ NULL, /* thread */
+ TRUE, /* inherit handles */
+ flags, /* start flags */
+ NULL, /* environment */
+ NULL, /* current directory */
+ &si, /* start info */
+ pi); /* proc info */
+#endif
+
+ return ret;
+}
+
/* Start a new process.
PROGRAM is a path to the program to execute.
ARGS is a standard NULL-terminated array of arguments,
win32_create_inferior (char *program, char **program_args)
{
#ifndef USE_WIN32API
- char real_path[MAXPATHLEN];
+ char real_path[PATH_MAX];
char *orig_path, *new_path, *path_ptr;
#endif
BOOL ret;
int argslen;
int argc;
PROCESS_INFORMATION pi;
-#ifndef __MINGW32CE__
- STARTUPINFOA si = { sizeof (STARTUPINFOA) };
- char *winenv = NULL;
-#else
- wchar_t *wargs, *wprogram;
-#endif
+ DWORD err;
+
+ /* win32_wait needs to know we're not attaching. */
+ attaching = 0;
if (!program)
error ("No executable specified, specify executable to debug.\n");
path_ptr = getenv ("PATH");
if (path_ptr)
{
+ int size = cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, NULL, 0);
orig_path = alloca (strlen (path_ptr) + 1);
- new_path = alloca (cygwin_posix_to_win32_path_list_buf_size (path_ptr));
+ new_path = alloca (size);
strcpy (orig_path, path_ptr);
- cygwin_posix_to_win32_path_list (path_ptr, new_path);
+ cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, new_path, size);
setenv ("PATH", new_path, 1);
- }
- cygwin_conv_to_win32_path (program, real_path);
+ }
+ cygwin_conv_path (CCP_POSIX_TO_WIN_A, program, real_path, PATH_MAX);
program = real_path;
#endif
for (argc = 1; program_args[argc]; argc++)
{
/* FIXME: Can we do better about quoting? How does Cygwin
- handle this? */
+ handle this? */
strcat (args, " ");
strcat (args, program_args[argc]);
}
flags |= CREATE_NEW_PROCESS_GROUP;
#endif
-#ifdef __MINGW32CE__
- to_back_slashes (program);
- wargs = alloca (argslen * sizeof (wchar_t));
- mbstowcs (wargs, args, argslen);
- wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t));
- mbstowcs (wprogram, program, strlen (program) + 1);
- ret = CreateProcessW (wprogram, /* image name */
- wargs, /* command line */
- NULL, /* security, not supported */
- NULL, /* thread, not supported */
- FALSE, /* inherit handles, not supported */
- flags, /* start flags */
- NULL, /* environment, not supported */
- NULL, /* current directory, not supported */
- NULL, /* start info, not supported */
- &pi); /* proc info */
-#else
- ret = CreateProcessA (program, /* image name */
- args, /* command line */
- NULL, /* security */
- NULL, /* thread */
- TRUE, /* inherit handles */
- flags, /* start flags */
- winenv, /* environment */
- NULL, /* current directory */
- &si, /* start info */
- &pi); /* proc info */
-#endif
+ ret = create_process (program, args, flags, &pi);
+ err = GetLastError ();
+ if (!ret && err == ERROR_FILE_NOT_FOUND)
+ {
+ char *exename = alloca (strlen (program) + 5);
+ strcat (strcpy (exename, program), ".exe");
+ ret = create_process (exename, args, flags, &pi);
+ err = GetLastError ();
+ }
#ifndef USE_WIN32API
if (orig_path)
if (!ret)
{
- DWORD err = GetLastError ();
error ("Error creating process \"%s%s\", (error %d): %s\n",
program, args, (int) err, strwinerror (err));
}
CloseHandle (pi.hThread);
#endif
- current_process_handle = pi.hProcess;
- current_process_id = pi.dwProcessId;
-
- do_initial_child_stuff (current_process_id);
+ do_initial_child_stuff (pi.hProcess, pi.dwProcessId, 0);
return current_process_id;
}
static int
win32_attach (unsigned long pid)
{
- winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL;
+ HANDLE h;
winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL;
+ DWORD err;
#ifdef _WIN32_WCE
HMODULE dll = GetModuleHandle (_T("COREDLL.DLL"));
#else
HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL"));
#endif
- DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop);
DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit);
- if (DebugActiveProcess (pid))
+ h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid);
+ if (h != NULL)
{
- if (DebugSetProcessKillOnExit != NULL)
- DebugSetProcessKillOnExit (FALSE);
-
- current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid);
-
- if (current_process_handle != NULL)
- {
- current_process_id = pid;
- do_initial_child_stuff (pid);
- return 0;
- }
- if (DebugActiveProcessStop != NULL)
- DebugActiveProcessStop (current_process_id);
+ if (DebugActiveProcess (pid))
+ {
+ if (DebugSetProcessKillOnExit != NULL)
+ DebugSetProcessKillOnExit (FALSE);
+
+ /* win32_wait needs to know we're attaching. */
+ attaching = 1;
+ do_initial_child_stuff (h, pid, 1);
+ return 0;
+ }
+
+ CloseHandle (h);
}
- error ("Attach to process failed.");
+ err = GetLastError ();
+ error ("Attach to process failed (error %d): %s\n",
+ (int) err, strwinerror (err));
}
/* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */
if (current_event.u.DebugString.fUnicode)
{
/* The event tells us how many bytes, not chars, even
- in Unicode. */
+ in Unicode. */
WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 };
if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0)
return;
#undef READ_BUFFER_LEN
}
-/* Kill all inferiors. */
static void
-win32_kill (void)
+win32_clear_inferiors (void)
+{
+ if (current_process_handle != NULL)
+ CloseHandle (current_process_handle);
+
+ for_each_inferior (&all_threads, delete_thread_info);
+ clear_inferiors ();
+}
+
+/* Kill all inferiors. */
+static int
+win32_kill (int pid)
{
- win32_thread_info *current_thread;
+ struct process_info *process;
if (current_process_handle == NULL)
- return;
+ return -1;
TerminateProcess (current_process_handle, 0);
for (;;)
break;
else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT)
{
- struct target_waitstatus our_status = { 0 };
+ struct target_waitstatus our_status = { 0 };
handle_output_debug_string (&our_status);
- }
+ }
}
- CloseHandle (current_process_handle);
+ win32_clear_inferiors ();
- current_thread = inferior_target_data (current_inferior);
- if (current_thread && current_thread->h)
- {
- /* This may fail in an attached process, so don't check. */
- (void) CloseHandle (current_thread->h);
- }
+ process = find_process_pid (pid);
+ remove_process (process);
+ return 0;
}
-/* Detach from all inferiors. */
+/* Detach from inferior PID. */
static int
-win32_detach (void)
+win32_detach (int pid)
{
- HANDLE h;
-
+ struct process_info *process;
winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL;
winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL;
#ifdef _WIN32_WCE
|| DebugActiveProcessStop == NULL)
return -1;
- /* We need a new handle, since DebugActiveProcessStop
- closes all the ones that came through the events. */
- if ((h = OpenProcess (PROCESS_ALL_ACCESS,
- FALSE,
- current_process_id)) == NULL)
- {
- /* The process died. */
- return -1;
- }
-
{
struct thread_resume resume;
- resume.thread = -1;
- resume.step = 0;
+ resume.thread = minus_one_ptid;
+ resume.kind = resume_continue;
resume.sig = 0;
- resume.leave_stopped = 0;
- win32_resume (&resume);
+ win32_resume (&resume, 1);
}
if (!DebugActiveProcessStop (current_process_id))
- {
- CloseHandle (h);
- return -1;
- }
+ return -1;
+
DebugSetProcessKillOnExit (FALSE);
+ process = find_process_pid (pid);
+ remove_process (process);
- current_process_handle = h;
+ win32_clear_inferiors ();
return 0;
}
-/* Wait for inferiors to end. */
static void
-win32_join (void)
+win32_mourn (struct process_info *process)
{
- if (current_process_id == 0
- || current_process_handle == NULL)
- return;
-
- WaitForSingleObject (current_process_handle, INFINITE);
- CloseHandle (current_process_handle);
+ remove_process (process);
+}
- current_process_handle = NULL;
- current_process_id = 0;
+/* Wait for inferiors to end. */
+static void
+win32_join (int pid)
+{
+ HANDLE h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid);
+ if (h != NULL)
+ {
+ WaitForSingleObject (h, INFINITE);
+ CloseHandle (h);
+ }
}
/* Return 1 iff the thread with thread ID TID is alive. */
static int
-win32_thread_alive (unsigned long tid)
+win32_thread_alive (ptid_t ptid)
{
int res;
/* Our thread list is reliable; don't bother to poll target
threads. */
- if (find_inferior_id (&all_threads, tid) != NULL)
+ if (find_inferior_id (&all_threads, ptid) != NULL)
res = 1;
else
res = 0;
/* Resume the inferior process. RESUME_INFO describes how we want
to resume. */
static void
-win32_resume (struct thread_resume *resume_info)
+win32_resume (struct thread_resume *resume_info, size_t n)
{
DWORD tid;
- enum target_signal sig;
+ enum gdb_signal sig;
int step;
win32_thread_info *th;
DWORD continue_status = DBG_CONTINUE;
+ ptid_t ptid;
/* This handles the very limited set of resume packets that GDB can
currently produce. */
- if (resume_info[0].thread == -1)
+ if (n == 1 && ptid_equal (resume_info[0].thread, minus_one_ptid))
tid = -1;
- else if (resume_info[1].thread == -1 && !resume_info[1].leave_stopped)
+ else if (n > 1)
tid = -1;
else
/* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make
the Windows resume code do the right thing for thread switching. */
tid = current_event.dwThreadId;
- if (resume_info[0].thread != -1)
+ if (!ptid_equal (resume_info[0].thread, minus_one_ptid))
{
sig = resume_info[0].sig;
- step = resume_info[0].step;
+ step = resume_info[0].kind == resume_step;
}
else
{
step = 0;
}
- if (sig != TARGET_SIGNAL_0)
+ if (sig != GDB_SIGNAL_0)
{
if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
OUTMSG (("Can only continue with recieved signal %d.\n", last_sig));
}
- last_sig = TARGET_SIGNAL_0;
+ last_sig = GDB_SIGNAL_0;
/* Get context for the currently selected thread. */
- th = thread_rec (current_event.dwThreadId, FALSE);
+ ptid = debug_event_ptid (¤t_event);
+ th = thread_rec (ptid, FALSE);
if (th)
{
if (th->context.ContextFlags)
"in this configuration.\n");
}
- (*the_low_target.set_thread_context) (th, ¤t_event);
+ win32_set_thread_context (th);
th->context.ContextFlags = 0;
}
}
child_continue (continue_status, tid);
}
+static void
+win32_add_one_solib (const char *name, CORE_ADDR load_addr)
+{
+ char buf[MAX_PATH + 1];
+ char buf2[MAX_PATH + 1];
+
+#ifdef _WIN32_WCE
+ WIN32_FIND_DATA w32_fd;
+ WCHAR wname[MAX_PATH + 1];
+ mbstowcs (wname, name, MAX_PATH);
+ HANDLE h = FindFirstFile (wname, &w32_fd);
+#else
+ WIN32_FIND_DATAA w32_fd;
+ HANDLE h = FindFirstFileA (name, &w32_fd);
+#endif
+
+ /* The symbols in a dll are offset by 0x1000, which is the
+ offset from 0 of the first byte in an image - because
+ of the file header and the section alignment. */
+ load_addr += 0x1000;
+
+ if (h == INVALID_HANDLE_VALUE)
+ strcpy (buf, name);
+ else
+ {
+ FindClose (h);
+ strcpy (buf, name);
+#ifndef _WIN32_WCE
+ {
+ char cwd[MAX_PATH + 1];
+ char *p;
+ if (GetCurrentDirectoryA (MAX_PATH + 1, cwd))
+ {
+ p = strrchr (buf, '\\');
+ if (p)
+ p[1] = '\0';
+ SetCurrentDirectoryA (buf);
+ GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p);
+ SetCurrentDirectoryA (cwd);
+ }
+ }
+#endif
+ }
+
+#ifndef _WIN32_WCE
+ if (strcasecmp (buf, "ntdll.dll") == 0)
+ {
+ GetSystemDirectoryA (buf, sizeof (buf));
+ strcat (buf, "\\ntdll.dll");
+ }
+#endif
+
+#ifdef __CYGWIN__
+ cygwin_conv_path (CCP_WIN_A_TO_POSIX, buf, buf2, sizeof (buf2));
+#else
+ strcpy (buf2, buf);
+#endif
+
+ loaded_dll (buf2, load_addr);
+}
+
+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];
+ SIZE_T done;
+
+ /* 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;
+
+#ifdef _WIN32_WCE
+ /* Windows CE reports the address of the image name,
+ instead of an address of a pointer into the image name. */
+ address_ptr = address;
+#else
+ /* 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;
+#endif
+
+ /* 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 (!unicode)
+ ReadProcessMemory (h, address_ptr, buf, len, &done);
+ else
+ {
+ WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
+ ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
+ &done);
+
+ WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
+ }
+
+ return buf;
+}
+
+typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *,
+ DWORD, LPDWORD);
+typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE,
+ LPMODULEINFO, DWORD);
+typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE,
+ LPSTR, DWORD);
+
+static winapi_EnumProcessModules win32_EnumProcessModules;
+static winapi_GetModuleInformation win32_GetModuleInformation;
+static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA;
+
+static BOOL
+load_psapi (void)
+{
+ static int psapi_loaded = 0;
+ static HMODULE dll = NULL;
+
+ if (!psapi_loaded)
+ {
+ psapi_loaded = 1;
+ dll = LoadLibrary (TEXT("psapi.dll"));
+ if (!dll)
+ return FALSE;
+ win32_EnumProcessModules =
+ GETPROCADDRESS (dll, EnumProcessModules);
+ win32_GetModuleInformation =
+ GETPROCADDRESS (dll, GetModuleInformation);
+ win32_GetModuleFileNameExA =
+ GETPROCADDRESS (dll, GetModuleFileNameExA);
+ }
+
+ return (win32_EnumProcessModules != NULL
+ && win32_GetModuleInformation != NULL
+ && win32_GetModuleFileNameExA != NULL);
+}
+
+static int
+psapi_get_dll_name (LPVOID BaseAddress, char *dll_name_ret)
+{
+ DWORD len;
+ MODULEINFO mi;
+ size_t i;
+ HMODULE dh_buf[1];
+ HMODULE *DllHandle = dh_buf;
+ DWORD cbNeeded;
+ BOOL ok;
+
+ if (!load_psapi ())
+ goto failed;
+
+ cbNeeded = 0;
+ ok = (*win32_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded);
+
+ if (!ok || !cbNeeded)
+ goto failed;
+
+ DllHandle = (HMODULE *) alloca (cbNeeded);
+ if (!DllHandle)
+ goto failed;
+
+ ok = (*win32_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ cbNeeded,
+ &cbNeeded);
+ if (!ok)
+ goto failed;
+
+ for (i = 0; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++)
+ {
+ if (!(*win32_GetModuleInformation) (current_process_handle,
+ DllHandle[i],
+ &mi,
+ sizeof (mi)))
+ {
+ DWORD err = GetLastError ();
+ error ("Can't get module info: (error %d): %s\n",
+ (int) err, strwinerror (err));
+ }
+
+ if (mi.lpBaseOfDll == BaseAddress)
+ {
+ len = (*win32_GetModuleFileNameExA) (current_process_handle,
+ DllHandle[i],
+ dll_name_ret,
+ MAX_PATH);
+ if (len == 0)
+ {
+ DWORD err = GetLastError ();
+ error ("Error getting dll name: (error %d): %s\n",
+ (int) err, strwinerror (err));
+ }
+ return 1;
+ }
+ }
+
+failed:
+ dll_name_ret[0] = '\0';
+ return 0;
+}
+
+#ifndef _WIN32_WCE
+
+/* Iterate over all DLLs currently mapped by our inferior, and
+ add them to our list of solibs. */
+
+static void
+win32_add_all_dlls (void)
+{
+ size_t i;
+ HMODULE dh_buf[1];
+ HMODULE *DllHandle = dh_buf;
+ DWORD cbNeeded;
+ BOOL ok;
+
+ if (!load_psapi ())
+ return;
+
+ cbNeeded = 0;
+ ok = (*win32_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded);
+
+ if (!ok || !cbNeeded)
+ return;
+
+ DllHandle = (HMODULE *) alloca (cbNeeded);
+ if (!DllHandle)
+ return;
+
+ ok = (*win32_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ cbNeeded,
+ &cbNeeded);
+ if (!ok)
+ return;
+
+ for (i = 1; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++)
+ {
+ MODULEINFO mi;
+ char dll_name[MAX_PATH];
+
+ if (!(*win32_GetModuleInformation) (current_process_handle,
+ DllHandle[i],
+ &mi,
+ sizeof (mi)))
+ continue;
+ if ((*win32_GetModuleFileNameExA) (current_process_handle,
+ DllHandle[i],
+ dll_name,
+ MAX_PATH) == 0)
+ continue;
+ win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll);
+ }
+}
+#endif
+
+typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD);
+typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32);
+typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32);
+
+static winapi_CreateToolhelp32Snapshot win32_CreateToolhelp32Snapshot;
+static winapi_Module32First win32_Module32First;
+static winapi_Module32Next win32_Module32Next;
+#ifdef _WIN32_WCE
+typedef BOOL (WINAPI *winapi_CloseToolhelp32Snapshot) (HANDLE);
+static winapi_CloseToolhelp32Snapshot win32_CloseToolhelp32Snapshot;
+#endif
+
+static BOOL
+load_toolhelp (void)
+{
+ static int toolhelp_loaded = 0;
+ static HMODULE dll = NULL;
+
+ if (!toolhelp_loaded)
+ {
+ toolhelp_loaded = 1;
+#ifndef _WIN32_WCE
+ dll = GetModuleHandle (_T("KERNEL32.DLL"));
+#else
+ dll = LoadLibrary (L"TOOLHELP.DLL");
+#endif
+ if (!dll)
+ return FALSE;
+
+ win32_CreateToolhelp32Snapshot =
+ GETPROCADDRESS (dll, CreateToolhelp32Snapshot);
+ win32_Module32First = GETPROCADDRESS (dll, Module32First);
+ win32_Module32Next = GETPROCADDRESS (dll, Module32Next);
+#ifdef _WIN32_WCE
+ win32_CloseToolhelp32Snapshot =
+ GETPROCADDRESS (dll, CloseToolhelp32Snapshot);
+#endif
+ }
+
+ return (win32_CreateToolhelp32Snapshot != NULL
+ && win32_Module32First != NULL
+ && win32_Module32Next != NULL
+#ifdef _WIN32_WCE
+ && win32_CloseToolhelp32Snapshot != NULL
+#endif
+ );
+}
+
+static int
+toolhelp_get_dll_name (LPVOID BaseAddress, char *dll_name_ret)
+{
+ HANDLE snapshot_module;
+ MODULEENTRY32 modEntry = { sizeof (MODULEENTRY32) };
+ int found = 0;
+
+ if (!load_toolhelp ())
+ return 0;
+
+ snapshot_module = win32_CreateToolhelp32Snapshot (TH32CS_SNAPMODULE,
+ current_event.dwProcessId);
+ if (snapshot_module == INVALID_HANDLE_VALUE)
+ return 0;
+
+ /* Ignore the first module, which is the exe. */
+ if (win32_Module32First (snapshot_module, &modEntry))
+ while (win32_Module32Next (snapshot_module, &modEntry))
+ if (modEntry.modBaseAddr == BaseAddress)
+ {
+#ifdef UNICODE
+ wcstombs (dll_name_ret, modEntry.szExePath, MAX_PATH + 1);
+#else
+ strcpy (dll_name_ret, modEntry.szExePath);
+#endif
+ found = 1;
+ break;
+ }
+
+#ifdef _WIN32_WCE
+ win32_CloseToolhelp32Snapshot (snapshot_module);
+#else
+ CloseHandle (snapshot_module);
+#endif
+ return found;
+}
+
+static void
+handle_load_dll (void)
+{
+ LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
+ char dll_buf[MAX_PATH + 1];
+ char *dll_name = NULL;
+
+ dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
+
+ /* Windows does not report the image name of the dlls in the debug
+ event on attaches. We resort to iterating over the list of
+ loaded dlls looking for a match by image base. */
+ if (!psapi_get_dll_name (event->lpBaseOfDll, dll_buf))
+ {
+ if (!server_waiting)
+ /* On some versions of Windows and Windows CE, we can't create
+ toolhelp snapshots while the inferior is stopped in a
+ LOAD_DLL_DEBUG_EVENT due to a dll load, but we can while
+ Windows is reporting the already loaded dlls. */
+ toolhelp_get_dll_name (event->lpBaseOfDll, dll_buf);
+ }
+
+ dll_name = dll_buf;
+
+ if (*dll_name == '\0')
+ dll_name = get_image_name (current_process_handle,
+ event->lpImageName, event->fUnicode);
+ if (!dll_name)
+ return;
+
+ win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) event->lpBaseOfDll);
+}
+
+/* Handle a DLL unload event.
+
+ This function assumes that this event did not occur during inferior
+ initialization, where their event info may be incomplete (see
+ do_initial_child_stuff and win32_add_one_solib for more info
+ on how we handle DLL loading during that phase). */
+
+static void
+handle_unload_dll (void)
+{
+ CORE_ADDR load_addr =
+ (CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll;
+
+ /* The symbols in a dll are offset by 0x1000, which is the
+ offset from 0 of the first byte in an image - because
+ of the file header and the section alignment. */
+ load_addr += 0x1000;
+ unloaded_dll (NULL, load_addr);
+}
+
static void
handle_exception (struct target_waitstatus *ourstatus)
{
{
case EXCEPTION_ACCESS_VIOLATION:
OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION"));
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ ourstatus->value.sig = GDB_SIGNAL_SEGV;
break;
case STATUS_STACK_OVERFLOW:
OUTMSG2 (("STATUS_STACK_OVERFLOW"));
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ ourstatus->value.sig = GDB_SIGNAL_SEGV;
break;
case STATUS_FLOAT_DENORMAL_OPERAND:
OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_INEXACT_RESULT:
OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_INVALID_OPERATION:
OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_OVERFLOW:
OUTMSG2 (("STATUS_FLOAT_OVERFLOW"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_STACK_CHECK:
OUTMSG2 (("STATUS_FLOAT_STACK_CHECK"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_UNDERFLOW:
OUTMSG2 (("STATUS_FLOAT_UNDERFLOW"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_DIVIDE_BY_ZERO:
OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_INTEGER_DIVIDE_BY_ZERO:
OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_INTEGER_OVERFLOW:
OUTMSG2 (("STATUS_INTEGER_OVERFLOW"));
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
OUTMSG2 (("EXCEPTION_BREAKPOINT"));
- ourstatus->value.sig = TARGET_SIGNAL_TRAP;
+ ourstatus->value.sig = GDB_SIGNAL_TRAP;
#ifdef _WIN32_WCE
/* Remove the initial breakpoint. */
check_breakpoints ((CORE_ADDR) (long) current_event
- .u.Exception.ExceptionRecord.ExceptionAddress);
+ .u.Exception.ExceptionRecord.ExceptionAddress);
#endif
break;
case DBG_CONTROL_C:
OUTMSG2 (("DBG_CONTROL_C"));
- ourstatus->value.sig = TARGET_SIGNAL_INT;
+ ourstatus->value.sig = GDB_SIGNAL_INT;
break;
case DBG_CONTROL_BREAK:
OUTMSG2 (("DBG_CONTROL_BREAK"));
- ourstatus->value.sig = TARGET_SIGNAL_INT;
+ ourstatus->value.sig = GDB_SIGNAL_INT;
break;
case EXCEPTION_SINGLE_STEP:
OUTMSG2 (("EXCEPTION_SINGLE_STEP"));
- ourstatus->value.sig = TARGET_SIGNAL_TRAP;
+ ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION"));
- ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ ourstatus->value.sig = GDB_SIGNAL_ILL;
break;
case EXCEPTION_PRIV_INSTRUCTION:
OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION"));
- ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ ourstatus->value.sig = GDB_SIGNAL_ILL;
break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION"));
- ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ ourstatus->value.sig = GDB_SIGNAL_ILL;
break;
default:
if (current_event.u.Exception.dwFirstChance)
ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
return;
}
- OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx",
- current_event.u.Exception.ExceptionRecord.ExceptionCode,
- (DWORD) current_event.u.Exception.ExceptionRecord.
- ExceptionAddress));
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
+ OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s",
+ (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode,
+ phex_nz ((uintptr_t) current_event.u.Exception.ExceptionRecord.
+ ExceptionAddress, sizeof (uintptr_t))));
+ ourstatus->value.sig = GDB_SIGNAL_UNKNOWN;
break;
}
OUTMSG2 (("\n"));
last_sig = ourstatus->value.sig;
}
-/* Get the next event from the child. */
+
static void
+suspend_one_thread (struct inferior_list_entry *entry)
+{
+ struct thread_info *thread = (struct thread_info *) entry;
+ win32_thread_info *th = inferior_target_data (thread);
+
+ if (!th->suspended)
+ {
+ if (SuspendThread (th->h) == (DWORD) -1)
+ {
+ DWORD err = GetLastError ();
+ OUTMSG (("warning: SuspendThread failed in suspend_one_thread, "
+ "(error %d): %s\n", (int) err, strwinerror (err)));
+ }
+ else
+ th->suspended = 1;
+ }
+}
+
+static void
+fake_breakpoint_event (void)
+{
+ OUTMSG2(("fake_breakpoint_event\n"));
+
+ faked_breakpoint = 1;
+
+ memset (¤t_event, 0, sizeof (current_event));
+ current_event.dwThreadId = main_thread_id;
+ current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT;
+ current_event.u.Exception.ExceptionRecord.ExceptionCode
+ = EXCEPTION_BREAKPOINT;
+
+ for_each_inferior (&all_threads, suspend_one_thread);
+}
+
+#ifdef _WIN32_WCE
+static int
+auto_delete_breakpoint (CORE_ADDR stop_pc)
+{
+ return 1;
+}
+#endif
+
+/* Get the next event from the child. */
+
+static int
get_child_debug_event (struct target_waitstatus *ourstatus)
{
- BOOL debug_event;
+ ptid_t ptid;
- last_sig = TARGET_SIGNAL_0;
+ last_sig = GDB_SIGNAL_0;
ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- /* Keep the wait time low enough for confortable remote interruption,
- but high enough so gdbserver doesn't become a bottleneck. */
- if (!(debug_event = WaitForDebugEvent (¤t_event, 250)))
- return;
+ /* Check if GDB sent us an interrupt request. */
+ check_remote_input_interrupt_request ();
- current_inferior =
- (struct thread_info *) find_inferior_id (&all_threads,
- current_event.dwThreadId);
+ if (soft_interrupt_requested)
+ {
+ soft_interrupt_requested = 0;
+ fake_breakpoint_event ();
+ goto gotevent;
+ }
+
+#ifndef _WIN32_WCE
+ attaching = 0;
+#else
+ if (attaching)
+ {
+ /* WinCE doesn't set an initial breakpoint automatically. To
+ stop the inferior, we flush all currently pending debug
+ events -- the thread list and the dll list are always
+ reported immediatelly without delay, then, we suspend all
+ threads and pretend we saw a trap at the current PC of the
+ main thread.
+
+ Contrary to desktop Windows, Windows CE *does* report the dll
+ names on LOAD_DLL_DEBUG_EVENTs resulting from a
+ DebugActiveProcess call. This limits the way we can detect
+ if all the dlls have already been reported. If we get a real
+ debug event before leaving attaching, the worst that will
+ happen is the user will see a spurious breakpoint. */
+
+ current_event.dwDebugEventCode = 0;
+ if (!WaitForDebugEvent (¤t_event, 0))
+ {
+ OUTMSG2(("no attach events left\n"));
+ fake_breakpoint_event ();
+ attaching = 0;
+ }
+ else
+ OUTMSG2(("got attach event\n"));
+ }
+ else
+#endif
+ {
+ /* Keep the wait time low enough for confortable remote
+ interruption, but high enough so gdbserver doesn't become a
+ bottleneck. */
+ if (!WaitForDebugEvent (¤t_event, 250))
+ {
+ DWORD e = GetLastError();
+
+ if (e == ERROR_PIPE_NOT_CONNECTED)
+ {
+ /* This will happen if the loader fails to succesfully
+ load the application, e.g., if the main executable
+ tries to pull in a non-existing export from a
+ DLL. */
+ ourstatus->kind = TARGET_WAITKIND_EXITED;
+ ourstatus->value.integer = 1;
+ return 1;
+ }
+
+ return 0;
+ }
+ }
+
+ gotevent:
switch (current_event.dwDebugEventCode)
{
case CREATE_THREAD_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT "
- "for pid=%d tid=%x)\n",
+ "for pid=%u tid=%x)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
/* Record the existence of this thread. */
- child_add_thread (current_event.dwThreadId,
- current_event.u.CreateThread.hThread);
+ child_add_thread (current_event.dwProcessId,
+ current_event.dwThreadId,
+ current_event.u.CreateThread.hThread,
+ current_event.u.CreateThread.lpThreadLocalBase);
break;
case EXIT_THREAD_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
- child_delete_thread (current_event.dwThreadId);
- break;
+ child_delete_thread (current_event.dwProcessId,
+ current_event.dwThreadId);
+
+ current_inferior = (struct thread_info *) all_threads.head;
+ return 1;
case CREATE_PROCESS_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
CloseHandle (current_event.u.CreateProcessInfo.hFile);
ourstatus->value.execd_pathname = "Main executable";
/* Add the main thread. */
- child_add_thread (main_thread_id,
- current_event.u.CreateProcessInfo.hThread);
+ child_add_thread (current_event.dwProcessId,
+ main_thread_id,
+ current_event.u.CreateProcessInfo.hThread,
+ current_event.u.CreateProcessInfo.lpThreadLocalBase);
- ourstatus->value.related_pid = current_event.dwThreadId;
+ ourstatus->value.related_pid = debug_event_ptid (¤t_event);
#ifdef _WIN32_WCE
- /* Windows CE doesn't set the initial breakpoint automatically
- like the desktop versions of Windows do. We add it explicitly
- here. It will be removed as soon as it is hit. */
- set_breakpoint_at ((CORE_ADDR) (long) current_event.u
- .CreateProcessInfo.lpStartAddress,
- delete_breakpoint_at);
+ if (!attaching)
+ {
+ /* Windows CE doesn't set the initial breakpoint
+ automatically like the desktop versions of Windows do.
+ We add it explicitly here. It will be removed as soon as
+ it is hit. */
+ set_breakpoint_at ((CORE_ADDR) (long) current_event.u
+ .CreateProcessInfo.lpStartAddress,
+ auto_delete_breakpoint);
+ }
#endif
break;
case EXIT_PROCESS_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
+ child_continue (DBG_CONTINUE, -1);
CloseHandle (current_process_handle);
current_process_handle = NULL;
break;
case LOAD_DLL_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
CloseHandle (current_event.u.LoadDll.hFile);
+ if (! child_initialization_done)
+ break;
+ handle_load_dll ();
ourstatus->kind = TARGET_WAITKIND_LOADED;
- ourstatus->value.integer = 0;
+ ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
case UNLOAD_DLL_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
+ if (! child_initialization_done)
+ break;
+ handle_unload_dll ();
+ ourstatus->kind = TARGET_WAITKIND_LOADED;
+ ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
case EXCEPTION_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
handle_exception (ourstatus);
case OUTPUT_DEBUG_STRING_EVENT:
/* A message from the kernel (or Cygwin). */
OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT "
- "for pid=%d tid=%x\n",
+ "for pid=%u tid=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId));
handle_output_debug_string (ourstatus);
default:
OUTMSG2 (("gdbserver: kernel event unknown "
- "for pid=%d tid=%x code=%ld\n",
+ "for pid=%u tid=%x code=%x\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
- current_event.dwDebugEventCode));
+ (unsigned) current_event.dwDebugEventCode));
break;
}
+ ptid = debug_event_ptid (¤t_event);
current_inferior =
- (struct thread_info *) find_inferior_id (&all_threads,
- current_event.dwThreadId);
+ (struct thread_info *) find_inferior_id (&all_threads, ptid);
+ return 1;
}
/* Wait for the inferior process to change state.
STATUS will be filled in with a response code to send to GDB.
Returns the signal which caused the process to stop. */
-static unsigned char
-win32_wait (char *status)
+static ptid_t
+win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus, int options)
{
- struct target_waitstatus our_status;
+ struct regcache *regcache;
- *status = 'T';
+ if (cached_status.kind != TARGET_WAITKIND_IGNORE)
+ {
+ /* The core always does a wait after creating the inferior, and
+ do_initial_child_stuff already ran the inferior to the
+ initial breakpoint (or an exit, if creating the process
+ fails). Report it now. */
+ *ourstatus = cached_status;
+ cached_status.kind = TARGET_WAITKIND_IGNORE;
+ return debug_event_ptid (¤t_event);
+ }
while (1)
{
- /* Check if GDB sent us an interrupt request. */
- check_remote_input_interrupt_request ();
+ if (!get_child_debug_event (ourstatus))
+ continue;
- get_child_debug_event (&our_status);
-
- switch (our_status.kind)
+ switch (ourstatus->kind)
{
case TARGET_WAITKIND_EXITED:
OUTMSG2 (("Child exited with retcode = %x\n",
- our_status.value.integer));
-
- *status = 'W';
-
- child_fetch_inferior_registers (-1);
-
- return our_status.value.integer;
+ ourstatus->value.integer));
+ win32_clear_inferiors ();
+ return pid_to_ptid (current_event.dwProcessId);
case TARGET_WAITKIND_STOPPED:
+ case TARGET_WAITKIND_LOADED:
OUTMSG2 (("Child Stopped with signal = %d \n",
- our_status.value.sig));
-
- *status = 'T';
-
- child_fetch_inferior_registers (-1);
-
- return our_status.value.sig;
- default:
- OUTMSG (("Ignoring unknown internal event, %d\n", our_status.kind));
- /* fall-through */
- case TARGET_WAITKIND_SPURIOUS:
- case TARGET_WAITKIND_LOADED:
- case TARGET_WAITKIND_EXECD:
+ ourstatus->value.sig));
+
+ regcache = get_thread_regcache (current_inferior, 1);
+ child_fetch_inferior_registers (regcache, -1);
+ return debug_event_ptid (¤t_event);
+ default:
+ OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus->kind));
+ /* fall-through */
+ case TARGET_WAITKIND_SPURIOUS:
+ case TARGET_WAITKIND_EXECD:
/* do nothing, just continue */
child_continue (DBG_CONTINUE, -1);
break;
/* Fetch registers from the inferior process.
If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
static void
-win32_fetch_inferior_registers (int regno)
+win32_fetch_inferior_registers (struct regcache *regcache, int regno)
{
- child_fetch_inferior_registers (regno);
+ child_fetch_inferior_registers (regcache, regno);
}
/* Store registers to the inferior process.
If REGNO is -1, store all registers; otherwise, store at least REGNO. */
static void
-win32_store_inferior_registers (int regno)
+win32_store_inferior_registers (struct regcache *regcache, int regno)
{
- child_store_inferior_registers (regno);
+ child_store_inferior_registers (regcache, regno);
}
/* Read memory from the inferior process. This should generally be
&& DebugBreakProcess (current_process_handle))
return;
- OUTMSG (("Could not interrupt process.\n"));
+ /* Last resort, suspend all threads manually. */
+ soft_interrupt_requested = 1;
}
-static const char *
-win32_arch_string (void)
+#ifdef _WIN32_WCE
+int
+win32_error_to_fileio_error (DWORD err)
{
- return the_low_target.arch_string;
+ switch (err)
+ {
+ case ERROR_BAD_PATHNAME:
+ case ERROR_FILE_NOT_FOUND:
+ case ERROR_INVALID_NAME:
+ case ERROR_PATH_NOT_FOUND:
+ return FILEIO_ENOENT;
+ case ERROR_CRC:
+ case ERROR_IO_DEVICE:
+ case ERROR_OPEN_FAILED:
+ return FILEIO_EIO;
+ case ERROR_INVALID_HANDLE:
+ return FILEIO_EBADF;
+ case ERROR_ACCESS_DENIED:
+ case ERROR_SHARING_VIOLATION:
+ return FILEIO_EACCES;
+ case ERROR_NOACCESS:
+ return FILEIO_EFAULT;
+ case ERROR_BUSY:
+ return FILEIO_EBUSY;
+ case ERROR_ALREADY_EXISTS:
+ case ERROR_FILE_EXISTS:
+ return FILEIO_EEXIST;
+ case ERROR_BAD_DEVICE:
+ return FILEIO_ENODEV;
+ case ERROR_DIRECTORY:
+ return FILEIO_ENOTDIR;
+ case ERROR_FILENAME_EXCED_RANGE:
+ case ERROR_INVALID_DATA:
+ case ERROR_INVALID_PARAMETER:
+ case ERROR_NEGATIVE_SEEK:
+ return FILEIO_EINVAL;
+ case ERROR_TOO_MANY_OPEN_FILES:
+ return FILEIO_EMFILE;
+ case ERROR_HANDLE_DISK_FULL:
+ case ERROR_DISK_FULL:
+ return FILEIO_ENOSPC;
+ case ERROR_WRITE_PROTECT:
+ return FILEIO_EROFS;
+ case ERROR_NOT_SUPPORTED:
+ return FILEIO_ENOSYS;
+ }
+
+ return FILEIO_EUNKNOWN;
+}
+
+static void
+wince_hostio_last_error (char *buf)
+{
+ DWORD winerr = GetLastError ();
+ int fileio_err = win32_error_to_fileio_error (winerr);
+ sprintf (buf, "F-1,%x", fileio_err);
+}
+#endif
+
+/* Write Windows OS Thread Information Block address. */
+
+static int
+win32_get_tib_address (ptid_t ptid, CORE_ADDR *addr)
+{
+ win32_thread_info *th;
+ th = thread_rec (ptid, 0);
+ if (th == NULL)
+ return 0;
+ if (addr != NULL)
+ *addr = th->thread_local_base;
+ return 1;
}
static struct target_ops win32_target_ops = {
win32_attach,
win32_kill,
win32_detach,
+ win32_mourn,
win32_join,
win32_thread_alive,
win32_resume,
win32_wait,
win32_fetch_inferior_registers,
win32_store_inferior_registers,
+ NULL, /* prepare_to_access_memory */
+ NULL, /* done_accessing_memory */
win32_read_inferior_memory,
win32_write_inferior_memory,
- NULL,
+ NULL, /* lookup_symbols */
win32_request_interrupt,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- win32_arch_string
+ NULL, /* read_auxv */
+ win32_insert_point,
+ win32_remove_point,
+ win32_stopped_by_watchpoint,
+ win32_stopped_data_address,
+ NULL, /* read_offsets */
+ NULL, /* get_tls_address */
+ NULL, /* qxfer_spu */
+#ifdef _WIN32_WCE
+ wince_hostio_last_error,
+#else
+ hostio_last_error_from_errno,
+#endif
+ NULL, /* qxfer_osdata */
+ NULL, /* qxfer_siginfo */
+ NULL, /* supports_non_stop */
+ NULL, /* async */
+ NULL, /* start_non_stop */
+ NULL, /* supports_multi_process */
+ NULL, /* handle_monitor_command */
+ NULL, /* core_of_thread */
+ NULL, /* read_loadmap */
+ NULL, /* process_qsupported */
+ NULL, /* supports_tracepoints */
+ NULL, /* read_pc */
+ NULL, /* write_pc */
+ NULL, /* thread_stopped */
+ win32_get_tib_address
};
/* Initialize the Win32 backend. */
if (the_low_target.breakpoint != NULL)
set_breakpoint_data (the_low_target.breakpoint,
the_low_target.breakpoint_len);
- init_registers ();
+ the_low_target.arch_setup ();
}
projects / deliverable / binutils-gdb.git / blobdiff