/* Target-vector operations for controlling win32 child processes, for GDB.
- Copyright 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+
+ 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.
- */
-
-/* by Steve Chamberlain, sac@cygnus.com */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* 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 "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"
-/* The ui's event loop. */
-extern int (*ui_loop_hook) PARAMS ((int signo));
+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
-#define FLAG_TRACE_BIT 0x100
-#define CONTEXT_DEBUGGER (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
+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 (void);
-static int win32_child_thread_alive (int);
-void child_kill_inferior (void);
+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. */
HANDLE h;
char *name;
int suspend_count;
+ int reload_context;
CONTEXT context;
STACKFRAME sf;
- } thread_info;
+ }
+thread_info;
-static thread_info thread_head = {NULL};
+static thread_info thread_head;
/* The process and thread handles for the above context. */
WaitForDebugEvent */
static HANDLE current_process_handle; /* Currently executing process */
static thread_info *current_thread; /* Info on currently selected thread */
-static DWORD main_thread_id; /* Thread ID of the main thread */
-static int ignore_first_first_chance = 0; /* True if we should ignore the
- first first chance exception that we get. */
+static DWORD main_thread_id; /* Thread ID of the main thread */
/* Counts of things. */
static int exception_count = 0;
static int event_count = 0;
+static int saw_create;
/* User options. */
static int new_console = 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_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.
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
{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. */
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)
-{
- if (!ok)
- printf_filtered ("error return %s:%d was %d\n", file, line, GetLastError ());
-}
-
-static void
-do_child_fetch_inferior_registers (int r)
+do_win32_fetch_inferior_registers (struct regcache *regcache, int r)
{
char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
long l;
- if (r == FCS_REGNUM)
+
+ if (!current_thread)
+ return; /* Windows sometimes uses a non-existent thread id in its
+ events */
+
+ if (current_thread->reload_context)
{
- l = *((long *)context_offset) & 0xffff;
- supply_register (r, (char *) &l);
+#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;
}
- else if (r == FOP_REGNUM)
+
+#define I387_ST0_REGNUM I386_ST0_REGNUM
+
+ if (r == I387_FISEG_REGNUM)
{
- l = (*((long *)context_offset) >> 16) & ((1 << 11) - 1);
- supply_register (r, (char *) &l);
+ 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)
- supply_register (r, context_offset);
+ 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);
}
-#include <psapi.h>
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 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;
-int psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+static int
+psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
{
DWORD len;
MODULEINFO mi;
int i;
- HMODULE dh_buf [ 1 ];
- HMODULE* DllHandle = dh_buf;
+ HMODULE dh_buf[1];
+ HMODULE *DllHandle = dh_buf;
DWORD cbNeeded;
BOOL ok;
if (!psapi_loaded ||
- psapi_EnumProcessModules == NULL ||
- psapi_GetModuleInformation == NULL ||
- psapi_GetModuleFileNameExA == NULL)
+ psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
{
- if (psapi_loaded)goto failed;
+ if (psapi_loaded)
+ goto failed;
psapi_loaded = 1;
psapi_module_handle = LoadLibrary ("psapi.dll");
if (!psapi_module_handle)
- {
- /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ());*/
- goto failed;
- }
- psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules" );
+ {
+ /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
+ goto failed;
+ }
+ 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)
+ "GetModuleFileNameExA");
+ if (psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
goto failed;
}
cbNeeded = 0;
ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- sizeof (HMODULE),
- &cbNeeded);
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded);
if (!ok || !cbNeeded)
goto failed;
- DllHandle = (HMODULE*) alloca (cbNeeded);
+ DllHandle = (HMODULE *) alloca (cbNeeded);
if (!DllHandle)
goto failed;
ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- cbNeeded,
- &cbNeeded);
+ DllHandle,
+ cbNeeded,
+ &cbNeeded);
if (!ok)
goto failed;
- for (i = 0; i < cbNeeded / sizeof (HMODULE); i++)
+ 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");
+ DllHandle[i],
+ &mi,
+ sizeof (mi)))
+ error (_("Can't get module info"));
len = (*psapi_GetModuleFileNameExA) (current_process_handle,
- DllHandle [i],
- dll_name_ret,
- MAX_PATH);
+ DllHandle[i],
+ dll_name_ret,
+ MAX_PATH);
if (len == 0)
- error ("Error getting dll name: %u\n", GetLastError ());
+ error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
return 1;
return 0;
}
+/* Encapsulate the information required in a call to
+ symbol_file_add_args */
struct safe_symbol_file_add_args
{
char *name;
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)
+#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 *gdb_stderrv)
+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);
- gdb_stderr = (struct ui_file *)gdb_stderrv;
+ ui_file_delete (gdb_stdout);
+ gdb_stderr = sp->err;
+ gdb_stdout = sp->out;
+#undef sp
}
+/* 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, gdb_stderr);
+ 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;
return p.ret;
}
+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))
+ {
+ p = strrchr (buf, '\\');
+ if (p)
+ p[1] = '\0';
+ SetCurrentDirectory (buf);
+ GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
+ SetCurrentDirectory (cwd);
+ }
+ }
+
+ 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)
+ {
+ 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
+
+ return so;
+}
+
+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;
+
+ /* 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 (!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;
+}
+
/* 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 (PTR dummy)
+handle_load_dll (void *dummy)
{
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;
- struct objfile *objfile;
- MEMORY_BASIC_INFORMATION minfo;
- struct section_addr_info section_addrs;
+ char *dll_name = NULL;
- memset (§ion_addrs, 0, sizeof (section_addrs));
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
- dll_buf[0] = dll_buf[sizeof(dll_buf) - 1] = '\0';
+ dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
dll_name = dll_buf;
- /* 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];
+ if (*dll_name == '\0')
+ dll_name = get_image_name (current_process_handle,
+ event->lpImageName, event->fUnicode);
+ if (!dll_name)
+ return 1;
- ReadProcessMemory (current_process_handle,
- (LPCVOID) event->lpImageName,
- (char *) &dll_name_ptr,
- sizeof (dll_name_ptr), &done);
+ solib_end->next = win32_make_so (dll_name, (DWORD) event->lpBaseOfDll);
+ solib_end = solib_end->next;
- /* See if we could read the address of a string, and that the
- address isn't null. */
+ return 1;
+}
- if (done != sizeof (dll_name_ptr) || !dll_name_ptr)
- return 1;
+static void
+win32_free_so (struct so_list *so)
+{
+ if (so->lm_info)
+ xfree (so->lm_info);
+ xfree (so);
+}
- 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);
+static int
+handle_unload_dll (void *dummy)
+{
+ DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll;
+ struct so_list *so;
- dll_name = alloca (len);
+ 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;
+ }
- if (event->fUnicode)
- {
- 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);
- }
- else
- {
- ReadProcessMemory (current_process_handle,
- (LPCVOID) dll_name_ptr,
- dll_name,
- len,
- &done);
- }
- }
+ error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
- if (!dll_name)
- return 1;
+ return 0;
+}
- while ((p = strchr (dll_name, '\\')))
- *p = '/';
+/* Clear list of loaded DLLs. */
+static void
+win32_clear_solib (void)
+{
+ solib_start.next = NULL;
+ solib_end = &solib_start;
+}
- /* 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. */
+/* Load DLL symbol info. */
+void
+dll_symbol_command (char *args, int from_tty)
+{
+ int n;
+ dont_repeat ();
- section_addrs.other[0].name = ".text";
- section_addrs.other[0].addr = (int) event->lpBaseOfDll + 0x1000;
- safe_symbol_file_add (dll_name, 0, §ion_addrs, 0, OBJF_SHARED);
- printf_unfiltered ("%x:%s\n", event->lpBaseOfDll, dll_name);
+ if (args == NULL)
+ error (_("dll-symbols requires a file name"));
- return 1;
+ 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.
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)
|| !s || !*s)
- return gotasig;
-
- if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0)
+ /* nothing to do */;
+ else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
{
+#ifdef __CYGWIN__
if (strncmp (s, "cYg", 3) != 0)
- warning (s);
+#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;
- int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0);
- gotasig = target_signal_from_host (sig);
+ int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
+ int gotasig = target_signal_from_host (sig);
ourstatus->value.sig = gotasig;
if (gotasig)
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ {
+ 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)
+ {
- free (s);
- return gotasig;
+ 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;
+
+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;
- int fc = ignore_first_first_chance;
+ DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
ourstatus->kind = TARGET_WAITKIND_STOPPED;
- ignore_first_first_chance = 0;
-
/* Record the context of the current thread */
th = thread_rec (current_event.dwThreadId, -1);
- last_sig = 0;
-
- 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_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
- last_sig = SIGSEGV;
+ 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:
- case STATUS_FLOAT_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
case STATUS_INTEGER_DIVIDE_BY_ZERO:
- DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
- case STATUS_STACK_OVERFLOW:
- DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ case STATUS_INTEGER_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
- if (fc && current_event.u.Exception.dwFirstChance &&
- ((DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress & 0xc0000000))
- {
- last_sig = -1;
- return 0;
- }
- 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;
- 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_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ 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;
- last_sig = SIGILL;
break;
default:
- printf_unfiltered ("gdb: unknown target exception 0x%08x at 0x%08x\n",
+ /* Treat unhandled first chance exceptions specially. */
+ if (current_event.u.Exception.dwFirstChance)
+ return -1;
+ printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
current_event.u.Exception.ExceptionRecord.ExceptionCode,
- current_event.u.Exception.ExceptionRecord.ExceptionAddress);
+ (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));
+ 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);
- continue_status = 0;
if (res)
for (th = &thread_head; (th = th->next) != NULL;)
- if (((id == -1) || (id == th->id)) && th->suspend_count)
+ 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;
}
+/* Called in pathological case where Windows fails to send a
+ CREATE_PROCESS_DEBUG_EVENT after an attach. */
+static DWORD
+fake_create_process (void)
+{
+ 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;
+}
+
+static void
+win32_resume (ptid_t ptid, int step, enum target_signal sig)
+{
+ thread_info *th;
+ DWORD continue_status = DBG_CONTINUE;
+
+ int pid = PIDGET (ptid);
+
+ if (sig != TARGET_SIGNAL_0)
+ {
+ if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
+ {
+ 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));
+ }
+
+ last_sig = TARGET_SIGNAL_0;
+
+ DEBUG_EXEC (("gdb: win32_resume (pid=%d, step=%d, sig=%d);\n",
+ pid, step, sig));
+
+ /* 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);
+}
+
/* Get the next event from the child. Return 1 if the event requires
handling by WFI (or whatever).
*/
static int
-get_child_debug_event (int pid, struct target_waitstatus *ourstatus,
- DWORD target_event_code, int *retval)
+get_win32_debug_event (int pid, struct target_waitstatus *ourstatus)
{
- int breakout = 0;
BOOL debug_event;
DWORD continue_status, event_code;
- thread_info *th = NULL;
+ 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)))
- {
- *retval = 0;
- goto out;
- }
+ goto out;
event_count++;
continue_status = DBG_CONTINUE;
- *retval = 0;
event_code = current_event.dwDebugEventCode;
- breakout = event_code == target_event_code;
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ th = NULL;
+ have_saved_context = 0;
switch (event_code)
{
(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 = child_add_thread (current_event.dwThreadId,
+ th = win32_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));
+ target_pid_to_str (
+ pid_to_ptid (current_event.dwThreadId)));
+ retval = current_event.dwThreadId;
break;
case EXIT_THREAD_DEBUG_EVENT:
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXIT_THREAD_DEBUG_EVENT"));
- child_delete_thread (current_event.dwThreadId);
- th = &dummy_thread_info;
+ if (current_event.dwThreadId != main_thread_id)
+ {
+ win32_delete_thread (current_event.dwThreadId);
+ th = &dummy_thread_info;
+ }
break;
case CREATE_PROCESS_DEBUG_EVENT:
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"CREATE_PROCESS_DEBUG_EVENT"));
- current_process_handle = current_event.u.CreateProcessInfo.hProcess;
+ CloseHandle (current_event.u.CreateProcessInfo.hFile);
+ if (++saw_create != 1)
+ {
+ CloseHandle (current_event.u.CreateProcessInfo.hProcess);
+ break;
+ }
- main_thread_id = inferior_pid = 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 = child_add_thread (inferior_pid,
+ 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:
(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 = current_event.dwProcessId;
- breakout = 1;
+ retval = main_thread_id;
break;
case LOAD_DLL_DEBUG_EVENT:
(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);
- registers_changed (); /* mark all regs invalid */
+ ourstatus->kind = TARGET_WAITKIND_LOADED;
+ ourstatus->value.integer = 0;
+ retval = main_thread_id;
break;
case UNLOAD_DLL_DEBUG_EVENT:
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"UNLOAD_DLL_DEBUG_EVENT"));
- break; /* FIXME: don't know what to do here */
+ 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 (handle_exception (ourstatus))
- *retval = current_event.dwThreadId;
- else
+ if (saw_create != 1)
+ break;
+ switch (handle_exception (ourstatus))
{
- if (last_sig >= 0)
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
- breakout = 0;
+ case 0:
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ case 1:
+ retval = current_event.dwThreadId;
+ break;
+ case -1:
+ last_sig = 1;
+ continue_status = -1;
+ break;
}
break;
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"OUTPUT_DEBUG_STRING_EVENT"));
- handle_output_debug_string ( ourstatus);
+ if (saw_create != 1)
+ break;
+ retval = handle_output_debug_string (ourstatus);
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",
+ 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 (breakout)
- current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
+ if (!retval || saw_create != 1)
+ {
+ if (continue_status == -1)
+ win32_resume (ptid, 0, 1);
+ else
+ CHECK (win32_continue (continue_status, -1));
+ }
else
- CHECK (child_continue (continue_status, -1));
+ {
+ inferior_ptid = pid_to_ptid (retval);
+ current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
+ }
out:
- return breakout;
+ return retval;
}
/* Wait for interesting events to occur in the target process. */
-static int
-child_wait (int pid, struct target_waitstatus *ourstatus)
+static ptid_t
+win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
{
- DWORD event_code;
- int retval;
+ 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,
isn't necessarily what you think it is. */
while (1)
- if (get_child_debug_event (pid, ourstatus, EXCEPTION_DEBUG_EVENT, &retval))
- return retval;
- else
- {
- int detach = 0;
+ {
+ int retval = get_win32_debug_event (pid, ourstatus);
+ if (retval)
+ return pid_to_ptid (retval);
+ else
+ {
+ int detach = 0;
- if (ui_loop_hook != NULL)
- detach = ui_loop_hook (0);
+ if (deprecated_ui_loop_hook != NULL)
+ detach = deprecated_ui_loop_hook (0);
- if (detach)
- child_kill_inferior ();
- }
+ if (detach)
+ win32_kill_inferior ();
+ }
+ }
}
-/* Attach to process PID, then initialize for debugging it. */
+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);
+
+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;
+}
+
+/* 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;
- DWORD event_code;
+ 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;
-
- 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;
- }
+ cygwin_internal (CW_SYNC_WINENV);
- /* 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 */
NULL, /* Security */
NULL, /* thread */
TRUE, /* inherit handles */
flags, /* start flags */
- winenv,
+ NULL, /* environment */
NULL, /* current directory */
&si,
&pi);
- if (!ret)
- error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ());
- exception_count = 0;
- event_count = 0;
+#ifdef __CYGWIN__
+ if (tty >= 0)
+ {
+ close (tty);
+ dup2 (ostdin, 0);
+ dup2 (ostdout, 1);
+ dup2 (ostderr, 2);
+ close (ostdin);
+ close (ostdout);
+ close (ostderr);
+ }
+#endif
- 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 (!ret)
+ error (_("Error creating process %s, (error %d)."),
+ exec_file, (unsigned) GetLastError ());
- ignore_first_first_chance = 1;
+ CloseHandle (pi.hThread);
+ CloseHandle (pi.hProcess);
- /* Run until process and threads are loaded */
- while (!get_child_debug_event (inferior_pid, &dummy,
- CREATE_PROCESS_DEBUG_EVENT, &ret))
- continue;
+ if (useshell && shell[0] != '\0')
+ saw_create = -1;
+ else
+ saw_create = 0;
+
+ do_initial_win32_stuff (pi.dwProcessId);
- /* child_continue (DBG_CONTINUE, -1);*/
- 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, 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)
{
- 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 */
+}
- last_sig = 0;
+static int
+win32_can_run (void)
+{
+ return 1;
+}
- DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
- pid, step, sig));
+static void
+win32_close (int x)
+{
+ DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n",
+ PIDGET (inferior_ptid)));
+}
- /* 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
- }
+/* Convert pid to printable format. */
+static char *
+win32_pid_to_str (ptid_t ptid)
+{
+ static char buf[80];
+ int pid = PIDGET (ptid);
- if (th->context.ContextFlags)
- {
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
- }
+ if ((DWORD) pid == current_event.dwProcessId)
+ sprintf (buf, "process %d", pid);
+ else
+ sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
+ return buf;
+}
- /* Allow continuing with the same signal that interrupted us.
- Otherwise complain. */
+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;
+}
- child_continue (continue_status, pid);
+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)
+{
+ 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 void
-child_prepare_to_store ()
+init_win32_ops (void)
{
- /* Do nothing, since we can store individual regs */
+ 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 int
-child_can_run ()
+static void
+set_win32_aliases (char *argv0)
{
- return 1;
+ add_info_alias ("dll", "sharedlibrary", 1);
}
-static void
-child_close ()
+void
+_initialize_win32_nat (void)
{
- DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid));
+ 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_pid_to_str = cygwin_pid_to_str;
- 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)
{
- 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)
{
+ 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