-/* Target-vector operations for controlling win32 child processes, for GDB.
+/* Target-vector operations for controlling windows child processes, for GDB.
- Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Cygnus Solutions, A Red Hat Company.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without eve nthe implied warranty of
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Originally by Steve Chamberlain, sac@cygnus.com */
-/* We assume we're being built with and will be used for cygwin. */
-
#include "defs.h"
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include <stdlib.h>
#include <windows.h>
#include <imagehlp.h>
+#include <psapi.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 "windows-tdep.h"
+#include "windows-nat.h"
+#include "i386-nat.h"
+
+#define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
+#define DebugActiveProcessStop dyn_DebugActiveProcessStop
+#define DebugBreakProcess dyn_DebugBreakProcess
+#define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
+#define EnumProcessModules dyn_EnumProcessModules
+#define GetModuleFileNameExA dyn_GetModuleFileNameExA
+#define GetModuleInformation dyn_GetModuleInformation
+#define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
+#define OpenProcessToken dyn_OpenProcessToken
+
+static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
+ DWORD, PTOKEN_PRIVILEGES, PDWORD);
+static BOOL WINAPI (*DebugActiveProcessStop) (DWORD);
+static BOOL WINAPI (*DebugBreakProcess) (HANDLE);
+static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL);
+static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD,
+ LPDWORD);
+static DWORD WINAPI (*GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR,
+ DWORD);
+static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
+ DWORD);
+static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID);
+static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
+
+static struct target_ops windows_ops;
+
+#ifdef __CYGWIN__
+/* The starting and ending address of the cygwin1.dll text segment. */
+static CORE_ADDR cygwin_load_start;
+static CORE_ADDR 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... */
CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
};
#endif
-#include <sys/procfs.h>
-#include <psapi.h>
+
+#ifndef CONTEXT_EXTENDED_REGISTERS
+/* This macro is only defined on ia32. It only makes sense on this target,
+ so define it as zero if not already defined. */
+#define CONTEXT_EXTENDED_REGISTERS 0
+#endif
#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
| CONTEXT_EXTENDED_REGISTERS
-static unsigned dr[8];
+static uintptr_t dr[8];
static int debug_registers_changed;
static int debug_registers_used;
+static int windows_initialization_done;
+#define DR6_CLEAR_VALUE 0xffff0ff0
+
/* 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"
+#ifndef _CYGWIN_SIGNAL_STRING
+#define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
+#endif
#define CHECK(x) check (x, __FILE__,__LINE__)
#define DEBUG_EXEC(x) if (debug_exec) 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 (ptid_t);
-void child_kill_inferior (void);
+static void windows_stop (ptid_t);
+static int windows_thread_alive (struct target_ops *, ptid_t);
+static void windows_kill_inferior (struct target_ops *);
+
+static void cygwin_set_dr (int i, CORE_ADDR addr);
+static void cygwin_set_dr7 (unsigned long val);
+static unsigned long cygwin_get_dr6 (void);
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. */
+ not available in gdb's thread structure. */
typedef struct thread_info_struct
{
struct thread_info_struct *next;
DWORD id;
HANDLE h;
char *name;
- int suspend_count;
+ int suspended;
int reload_context;
CONTEXT context;
STACKFRAME sf;
static int exception_count = 0;
static int event_count = 0;
static int saw_create;
+static int open_process_used = 0;
/* 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_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.
+/* This vector maps GDB's idea of a register's number into an offset
+ in the windows exception context vector.
It also contains the bit mask needed to load the register in question.
+ The contents of this table can only be computed by the units
+ that provide CPU-specific support for Windows native debugging.
+ These units should set the table by calling
+ windows_set_context_register_offsets.
+
One day we could read a reg, we could inspect the context we
already have loaded, if it doesn't have the bit set that we need,
we read that set of registers in using GetThreadContext. If the
the other regs of the group, and then we copy the info in and set
out bit. */
-#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
-static const int mappings[] =
-{
- context_offset (Eax),
- context_offset (Ecx),
- context_offset (Edx),
- context_offset (Ebx),
- context_offset (Esp),
- context_offset (Ebp),
- context_offset (Esi),
- context_offset (Edi),
- context_offset (Eip),
- context_offset (EFlags),
- context_offset (SegCs),
- context_offset (SegSs),
- context_offset (SegDs),
- context_offset (SegEs),
- context_offset (SegFs),
- context_offset (SegGs),
- context_offset (FloatSave.RegisterArea[0 * 10]),
- context_offset (FloatSave.RegisterArea[1 * 10]),
- context_offset (FloatSave.RegisterArea[2 * 10]),
- context_offset (FloatSave.RegisterArea[3 * 10]),
- context_offset (FloatSave.RegisterArea[4 * 10]),
- context_offset (FloatSave.RegisterArea[5 * 10]),
- context_offset (FloatSave.RegisterArea[6 * 10]),
- context_offset (FloatSave.RegisterArea[7 * 10]),
- context_offset (FloatSave.ControlWord),
- context_offset (FloatSave.StatusWord),
- context_offset (FloatSave.TagWord),
- context_offset (FloatSave.ErrorSelector),
- context_offset (FloatSave.ErrorOffset),
- context_offset (FloatSave.DataSelector),
- context_offset (FloatSave.DataOffset),
- context_offset (FloatSave.ErrorSelector)
- /* XMM0-7 */ ,
- context_offset (ExtendedRegisters[10*16]),
- context_offset (ExtendedRegisters[11*16]),
- context_offset (ExtendedRegisters[12*16]),
- context_offset (ExtendedRegisters[13*16]),
- context_offset (ExtendedRegisters[14*16]),
- context_offset (ExtendedRegisters[15*16]),
- context_offset (ExtendedRegisters[16*16]),
- context_offset (ExtendedRegisters[17*16]),
- /* MXCSR */
- context_offset (ExtendedRegisters[24])
-};
-
-#undef context_offset
+static const int *mappings;
/* This vector maps the target's idea of an exception (extracted
from the DEBUG_EVENT structure) to GDB's idea. */
{STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
{-1, -1}};
+/* Set the MAPPINGS static global to OFFSETS.
+ See the description of MAPPINGS for more details. */
+
+void
+windows_set_context_register_offsets (const int *offsets)
+{
+ mappings = offsets;
+}
+
static void
check (BOOL ok, const char *file, int line)
{
GetLastError ());
}
-/* Find a thread record given a thread id.
- If get_context then also retrieve the context for this
- thread. */
+/* Find a thread record given a thread id. If GET_CONTEXT is not 0,
+ then also retrieve the context for this thread. If GET_CONTEXT is
+ negative, then don't suspend the thread. */
static thread_info *
thread_rec (DWORD id, int get_context)
{
for (th = &thread_head; (th = th->next) != NULL;)
if (th->id == id)
{
- if (!th->suspend_count && get_context)
+ if (!th->suspended && get_context)
{
if (get_context > 0 && id != current_event.dwThreadId)
- th->suspend_count = SuspendThread (th->h) + 1;
+ {
+ if (SuspendThread (th->h) == (DWORD) -1)
+ {
+ DWORD err = GetLastError ();
+ warning (_("SuspendThread failed. (winerr %d)"),
+ (int) err);
+ return NULL;
+ }
+ th->suspended = 1;
+ }
else if (get_context < 0)
- th->suspend_count = -1;
+ th->suspended = -1;
th->reload_context = 1;
}
return th;
return NULL;
}
-/* Add a thread to the thread list */
+/* Add a thread to the thread list. */
static thread_info *
-child_add_thread (DWORD id, HANDLE h)
+windows_add_thread (ptid_t ptid, HANDLE h)
{
thread_info *th;
+ DWORD id;
+
+ gdb_assert (ptid_get_tid (ptid) != 0);
+
+ id = ptid_get_tid (ptid);
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 (pid_to_ptid (id));
- /* Set the debug registers for the new thread in they are used. */
+ add_thread (ptid);
+ /* Set the debug registers for the new thread if they are used. */
if (debug_registers_used)
{
/* Only change the value of the debug registers. */
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.Dr6 = DR6_CLEAR_VALUE;
th->context.Dr7 = dr[7];
CHECK (SetThreadContext (th->h, &th->context));
th->context.ContextFlags = 0;
/* Clear out any old thread list and reintialize it to a
pristine state. */
static void
-child_init_thread_list (void)
+windows_init_thread_list (void)
{
thread_info *th = &thread_head;
- DEBUG_EVENTS (("gdb: child_init_thread_list\n"));
+ DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
init_thread_list ();
while (th->next != NULL)
{
thread_info *here = th->next;
th->next = here->next;
- (void) CloseHandle (here->h);
xfree (here);
}
thread_head.next = NULL;
/* Delete a thread from the list of threads */
static void
-child_delete_thread (DWORD id)
+windows_delete_thread (ptid_t ptid)
{
thread_info *th;
+ DWORD id;
+
+ gdb_assert (ptid_get_tid (ptid) != 0);
+
+ id = ptid_get_tid (ptid);
if (info_verbose)
- printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
- delete_thread (pid_to_ptid (id));
+ printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
+ delete_thread (ptid);
for (th = &thread_head;
th->next != NULL && th->next->id != id;
{
thread_info *here = th->next;
th->next = here->next;
- CloseHandle (here->h);
xfree (here);
}
}
static void
-do_child_fetch_inferior_registers (int r)
+do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
{
char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
long l;
if (!current_thread)
if (current_thread->reload_context)
{
- 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;
+#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.
+ But only if there were not modified since last stop. PR gdb/2388 */
+ if (!debug_registers_changed)
+ {
+ dr[0] = th->context.Dr0;
+ dr[1] = th->context.Dr1;
+ dr[2] = th->context.Dr2;
+ dr[3] = th->context.Dr3;
+ dr[6] = th->context.Dr6;
+ dr[7] = th->context.Dr7;
+ }
+ }
current_thread->reload_context = 0;
}
-#define I387_ST0_REGNUM I386_ST0_REGNUM
-
- if (r == I387_FISEG_REGNUM)
+ if (r == I387_FISEG_REGNUM (tdep))
{
l = *((long *) context_offset) & 0xffff;
- regcache_raw_supply (current_regcache, r, (char *) &l);
+ regcache_raw_supply (regcache, r, (char *) &l);
}
- else if (r == I387_FOP_REGNUM)
+ else if (r == I387_FOP_REGNUM (tdep))
{
l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
- regcache_raw_supply (current_regcache, r, (char *) &l);
+ regcache_raw_supply (regcache, r, (char *) &l);
}
else if (r >= 0)
- regcache_raw_supply (current_regcache, 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 (gdbarch); r++)
+ do_windows_fetch_inferior_registers (regcache, r);
}
-
-#undef I387_ST0_REGNUM
}
static void
-child_fetch_inferior_registers (int r)
+windows_fetch_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int r)
{
- current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
+ current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
/* Check if current_thread exists. Windows sometimes uses a non-existent
thread id in its events */
if (current_thread)
- do_child_fetch_inferior_registers (r);
+ do_windows_fetch_inferior_registers (regcache, r);
}
static void
-do_child_store_inferior_registers (int r)
+do_windows_store_inferior_registers (const struct regcache *regcache, int r)
{
if (!current_thread)
/* Windows sometimes uses a non-existent thread id in its events */;
else if (r >= 0)
- regcache_raw_collect (current_regcache, r,
+ 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_windows_store_inferior_registers (regcache, r);
}
}
/* Store a new register value into the current thread context */
static void
-child_store_inferior_registers (int r)
+windows_store_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int r)
{
- current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
+ current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
/* Check if current_thread exists. Windows sometimes uses a non-existent
thread id in its events */
if (current_thread)
- do_child_store_inferior_registers (r);
+ do_windows_store_inferior_registers (regcache, r);
}
-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;
-
-int
-psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+/* Get the name of a given module at at given base address. If base_address
+ is zero return the first loaded module (which is always the name of the
+ executable). */
+static int
+get_module_name (LPVOID base_address, char *dll_name_ret)
{
DWORD len;
MODULEINFO mi;
int i;
HMODULE dh_buf[1];
- HMODULE *DllHandle = dh_buf;
+ HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */
DWORD cbNeeded;
- BOOL ok;
-
- if (!psapi_loaded ||
- psapi_EnumProcessModules == NULL ||
- psapi_GetModuleInformation == NULL ||
- psapi_GetModuleFileNameExA == NULL)
- {
- if (psapi_loaded)
- goto failed;
- psapi_loaded = 1;
- psapi_module_handle = LoadLibrary ("psapi.dll");
- if (!psapi_module_handle)
- {
- /* 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)
- goto failed;
- }
+#ifdef __CYGWIN__
+ char pathbuf[PATH_MAX + 1]; /* Temporary storage prior to converting to
+ posix form */
+#else
+ char *pathbuf = dll_name_ret; /* Just copy directly to passed-in arg */
+#endif
cbNeeded = 0;
- ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- sizeof (HMODULE),
- &cbNeeded);
-
- if (!ok || !cbNeeded)
+ /* Find size of buffer needed to handle list of modules loaded in inferior */
+ if (!EnumProcessModules (current_process_handle, DllHandle,
+ sizeof (HMODULE), &cbNeeded) || !cbNeeded)
goto failed;
+ /* Allocate correct amount of space for module list */
DllHandle = (HMODULE *) alloca (cbNeeded);
if (!DllHandle)
goto failed;
- ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- cbNeeded,
- &cbNeeded);
- if (!ok)
+ /* Get the list of modules */
+ if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
+ &cbNeeded))
goto failed;
for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
{
- if (!(*psapi_GetModuleInformation) (current_process_handle,
- DllHandle[i],
- &mi,
- sizeof (mi)))
+ /* Get information on this module */
+ if (!GetModuleInformation (current_process_handle, DllHandle[i],
+ &mi, sizeof (mi)))
error (_("Can't get module info"));
- len = (*psapi_GetModuleFileNameExA) (current_process_handle,
- DllHandle[i],
- dll_name_ret,
- MAX_PATH);
- if (len == 0)
- error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
-
- if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
- return 1;
+ if (!base_address || mi.lpBaseOfDll == base_address)
+ {
+ /* Try to find the name of the given module */
+ len = GetModuleFileNameExA (current_process_handle,
+ DllHandle[i], pathbuf, MAX_PATH);
+ if (len == 0)
+ error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
+#ifdef __CYGWIN__
+ /* Cygwin prefers that the path be in /x/y/z format */
+ cygwin_conv_to_full_posix_path (pathbuf, dll_name_ret);
+#endif
+ return 1; /* success */
+ }
}
failed:
dll_name_ret[0] = '\0';
- return 0;
+ return 0; /* failure */
}
/* Encapsulate the information required in a call to
};
/* Maintain a linked list of "so" information. */
-struct so_stuff
+struct lm_info
{
- struct so_stuff *next;
- DWORD load_addr;
- DWORD end_addr;
- int loaded;
- struct objfile *objfile;
- char name[1];
-} solib_start, *solib_end;
+ LPVOID load_addr;
+};
+
+static struct so_list solib_start, *solib_end;
/* Call symbol_file_add with stderr redirected. We don't care if there
are errors. */
static int
safe_symbol_file_add_stub (void *argv)
{
-#define p ((struct safe_symbol_file_add_args *)argv)
- struct so_stuff *so = &solib_start;
-
- while ((so = so->next))
- if (so->loaded && strcasecmp (so->name, p->name) == 0)
- return 0;
- p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
+#define p ((struct safe_symbol_file_add_args *) argv)
+ const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0)
+ | (p->mainline ? SYMFILE_MAINLINE : 0));
+ p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags);
return !!p->ret;
#undef p
}
return p.ret;
}
-/* Remember the maximum DLL length for printing in info dll command. */
-int max_dll_name_len;
-
-static void
-register_loaded_dll (const char *name, DWORD load_addr)
+static struct so_list *
+windows_make_so (const char *name, LPVOID load_addr)
{
- struct so_stuff *so;
- char ppath[MAX_PATH + 1];
+ 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;
- size_t len;
if (h == INVALID_HANDLE_VALUE)
strcpy (buf, name);
}
}
- cygwin_conv_to_posix_path (buf, ppath);
- so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1);
- so->loaded = 0;
- so->load_addr = load_addr;
- if (VirtualQueryEx (current_process_handle, (void *) load_addr, &m,
- sizeof (m)))
- so->end_addr = (DWORD) m.AllocationBase + m.RegionSize;
- else
- so->end_addr = load_addr + 0x2000; /* completely arbitrary */
+ 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 (so->so_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;
+ }
- so->next = NULL;
- so->objfile = NULL;
- strcpy (so->name, ppath);
+ /* 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 = (CORE_ADDR) (uintptr_t) ((char *) load_addr + 0x1000);
+ cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
+
+ bfd_close (abfd);
+ }
+#endif
- solib_end->next = so;
- solib_end = so;
- len = strlen (ppath);
- if (len > max_dll_name_len)
- max_dll_name_len = len;
+ return so;
}
-char *
+static char *
get_image_name (HANDLE h, void *address, int unicode)
{
static char buf[(2 * MAX_PATH) + 1];
char *address_ptr;
int len = 0;
char b[2];
- DWORD done;
+ SIZE_T done;
/* Attempt to read the name of the dll that was detected.
This is documented to work only when actively debugging
LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
char dll_buf[MAX_PATH + 1];
char *dll_name = NULL;
- char *p;
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
- if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
+ if (!get_module_name (event->lpBaseOfDll, dll_buf))
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
dll_name = dll_buf;
if (*dll_name == '\0')
- dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode);
+ dll_name = get_image_name (current_process_handle,
+ event->lpImageName, event->fUnicode);
if (!dll_name)
return 1;
- register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000);
+ solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
+ solib_end = solib_end->next;
+
+ DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
+ host_address_to_string (solib_end->lm_info->load_addr)));
return 1;
}
+static void
+windows_free_so (struct so_list *so)
+{
+ if (so->lm_info)
+ xfree (so->lm_info);
+ xfree (so);
+}
+
static int
handle_unload_dll (void *dummy)
{
- DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000;
- struct so_stuff *so;
+ LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
+ struct so_list *so;
for (so = &solib_start; so->next != NULL; so = so->next)
- if (so->next->load_addr == lpBaseOfDll)
+ if (so->next->lm_info->load_addr == lpBaseOfDll)
{
- struct so_stuff *sodel = so->next;
+ struct so_list *sodel = so->next;
so->next = sodel->next;
if (!so->next)
solib_end = so;
- if (sodel->objfile)
- free_objfile (sodel->objfile);
- xfree(sodel);
+ DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
+
+ windows_free_so (sodel);
+ solib_add (NULL, 0, NULL, auto_solib_add);
return 1;
}
- error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
-
- return 0;
-}
-char *
-solib_address (CORE_ADDR address)
-{
- struct so_stuff *so;
- for (so = &solib_start; so->next != NULL; so = so->next)
- if (address >= so->load_addr && address <= so->end_addr)
- return so->name;
- return NULL;
-}
+ error (_("Error: dll starting at %s not found."),
+ host_address_to_string (lpBaseOfDll));
-/* Return name of last loaded DLL. */
-char *
-child_solib_loaded_library_pathname (int pid)
-{
- return !solib_end || !solib_end->name[0] ? NULL : solib_end->name;
+ return 0;
}
/* Clear list of loaded DLLs. */
-void
-child_clear_solibs (void)
+static void
+windows_clear_solib (void)
{
- struct so_stuff *so, *so1 = solib_start.next;
-
- while ((so = so1) != NULL)
- {
- so1 = so->next;
- xfree (so);
- }
-
solib_start.next = NULL;
- solib_start.objfile = NULL;
solib_end = &solib_start;
- max_dll_name_len = sizeof ("DLL Name") - 1;
-}
-
-/* Get the loaded address of all sections, given that .text was loaded
- at text_load. Assumes that all sections are subject to the same
- relocation offset. Returns NULL if problems occur or if the
- sections were not relocated. */
-
-static struct section_addr_info *
-get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
-{
- struct section_addr_info *result = NULL;
- int section_count = bfd_count_sections (abfd);
- asection *text_section = bfd_get_section_by_name (abfd, ".text");
- CORE_ADDR text_vma;
-
- if (!text_section)
- {
- /* Couldn't get the .text section. Weird. */
- }
-
- else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
- {
- /* DLL wasn't relocated. */
- }
-
- else
- {
- /* Figure out all sections' loaded addresses. The offset here is
- such that taking a bfd_get_section_vma() result and adding
- offset will give the real load address of the section. */
-
- CORE_ADDR offset = text_load - text_vma;
-
- struct section_table *table_start = NULL;
- struct section_table *table_end = NULL;
- struct section_table *iter = NULL;
-
- build_section_table (abfd, &table_start, &table_end);
-
- for (iter = table_start; iter < table_end; ++iter)
- {
- /* Relocated addresses. */
- iter->addr += offset;
- iter->endaddr += offset;
- }
-
- result = build_section_addr_info_from_section_table (table_start,
- table_end);
-
- xfree (table_start);
- }
-
- return result;
-}
-
-/* Add DLL symbol information. */
-static struct objfile *
-solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
-{
- struct section_addr_info *addrs = NULL;
- static struct objfile *result = NULL;
- bfd *abfd = NULL;
-
- /* The symbols in a dll are offset by 0x1000, which is the
- the offset from 0 of the first byte in an image - because
- of the file header and the section alignment. */
-
- if (!name || !name[0])
- return NULL;
-
- abfd = bfd_openr (name, "pei-i386");
-
- if (!abfd)
- {
- /* pei failed - try pe */
- abfd = bfd_openr (name, "pe-i386");
- }
-
- if (abfd)
- {
- if (bfd_check_format (abfd, bfd_object))
- {
- addrs = get_relocated_section_addrs (abfd, load_addr);
- }
-
- bfd_close (abfd);
- }
-
- if (addrs)
- {
- result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
- free_section_addr_info (addrs);
- }
- else
- {
- /* Fallback on handling just the .text section. */
- struct cleanup *my_cleanups;
-
- addrs = alloc_section_addr_info (1);
- my_cleanups = make_cleanup (xfree, addrs);
- addrs->other[0].name = ".text";
- addrs->other[0].addr = load_addr;
-
- result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
- do_cleanups (my_cleanups);
- }
-
- return result;
}
/* Load DLL symbol info. */
safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
}
-/* List currently loaded DLLs. */
-void
-info_dll_command (char *ignore, int from_tty)
-{
- struct so_stuff *so = &solib_start;
-
- if (!so->next)
- return;
-
- printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name");
- while ((so = so->next) != NULL)
- printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr);
-
- return;
-}
-
/* Handle DEBUG_STRING output from child process.
Cygwin prepends its messages with a "cygwin:". Interpret this as
a Cygwin signal. Otherwise just print the string as a warning. */
static int
handle_output_debug_string (struct target_waitstatus *ourstatus)
{
- char *s;
- int gotasig = FALSE;
+ char *s = NULL;
+ int retval = 0;
if (!target_read_string
- ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
+ ((CORE_ADDR) (uintptr_t) 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)
+#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
- xfree (s);
- return gotasig;
+ if (s)
+ xfree (s);
+ return retval;
}
static int
#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)
+ printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
+ host_address_to_string (\
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress))
static int
handle_exception (struct target_waitstatus *ourstatus)
case EXCEPTION_ACCESS_VIOLATION:
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;
- if (find_pc_partial_function ((CORE_ADDR) current_event.u.Exception
- .ExceptionRecord.ExceptionAddress,
- &fn, NULL, NULL)
- && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)
+ CORE_ADDR addr = (CORE_ADDR) (uintptr_t) 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_ILL;
break;
default:
+ /* Treat unhandled first chance exceptions specially. */
if (current_event.u.Exception.dwFirstChance)
- return 0;
- printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
- current_event.u.Exception.ExceptionRecord.ExceptionCode,
- (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
+ return -1;
+ printf_unfiltered ("gdb: unknown target exception 0x%08lx at %s\n",
+ current_event.u.Exception.ExceptionRecord.ExceptionCode,
+ host_address_to_string (
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
break;
}
/* Resume all artificially suspended threads if we are continuing
execution */
static BOOL
-child_continue (DWORD continue_status, int id)
+windows_continue (DWORD continue_status, int id)
{
int i;
thread_info *th;
BOOL res;
- DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
+ DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%lx, %s);\n",
current_event.dwProcessId, current_event.dwThreadId,
continue_status == DBG_CONTINUE ?
"DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
+
+ for (th = &thread_head; (th = th->next) != NULL;)
+ if ((id == -1 || id == (int) th->id)
+ && th->suspended)
+ {
+ if (debug_registers_changed)
+ {
+ 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 = DR6_CLEAR_VALUE;
+ th->context.Dr7 = dr[7];
+ }
+ if (th->context.ContextFlags)
+ {
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
+ if (th->suspended > 0)
+ (void) ResumeThread (th->h);
+ th->suspended = 0;
+ }
+
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 == (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. */
-DWORD
+static DWORD
fake_create_process (void)
{
current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
current_event.dwProcessId);
+ if (current_process_handle != NULL)
+ open_process_used = 1;
+ else
+ {
+ error (_("OpenProcess call failed, GetLastError = %lud\n"),
+ GetLastError ());
+ /* We can not debug anything in that case. */
+ }
main_thread_id = current_event.dwThreadId;
- current_thread = child_add_thread (main_thread_id,
- current_event.u.CreateThread.hThread);
+ current_thread = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.CreateThread.hThread);
return main_thread_id;
}
-/* 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)
+static void
+windows_resume (struct target_ops *ops,
+ ptid_t ptid, int step, enum target_signal sig)
{
- BOOL debug_event;
- DWORD continue_status, event_code;
thread_info *th;
- static thread_info dummy_thread_info;
- int retval = 0;
-
- last_sig = TARGET_SIGNAL_0;
-
- if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
- goto out;
+ DWORD continue_status = DBG_CONTINUE;
- event_count++;
- continue_status = DBG_CONTINUE;
+ /* A specific PTID means `step only this thread id'. */
+ int resume_all = ptid_equal (ptid, minus_one_ptid);
- event_code = current_event.dwDebugEventCode;
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- th = NULL;
+ /* If we're continuing all threads, it's the current inferior that
+ should be handled specially. */
+ if (resume_all)
+ ptid = inferior_ptid;
- switch (event_code)
+ if (sig != TARGET_SIGNAL_0)
{
- case CREATE_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "CREATE_THREAD_DEBUG_EVENT"));
- if (saw_create != 1)
+ if (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. */
{
- if (!saw_create && attach_flag)
+ 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)
{
- /* 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++;
+ DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
}
- break;
}
- /* Record the existence of this thread */
- th = child_add_thread (current_event.dwThreadId,
- current_event.u.CreateThread.hThread);
- if (info_verbose)
- printf_unfiltered ("[New %s]\n",
- target_pid_to_str (
- pid_to_ptid (current_event.dwThreadId)));
- retval = current_event.dwThreadId;
- break;
+#endif
+ DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
+ last_sig));
+ }
- case EXIT_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
+ last_sig = TARGET_SIGNAL_0;
+
+ DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
+ ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
+
+ /* Get context for currently selected thread */
+ th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
+ if (th)
+ {
+ if (step)
+ {
+ /* Single step by setting t bit */
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ windows_fetch_inferior_registers (ops, regcache,
+ gdbarch_ps_regnum (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 = DR6_CLEAR_VALUE;
+ 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. */
+
+ if (resume_all)
+ windows_continue (continue_status, -1);
+ else
+ windows_continue (continue_status, ptid_get_tid (ptid));
+}
+
+/* Ctrl-C handler used when the inferior is not run in the same console. The
+ handler is in charge of interrupting the inferior using DebugBreakProcess.
+ Note that this function is not available prior to Windows XP. In this case
+ we emit a warning. */
+BOOL WINAPI
+ctrl_c_handler (DWORD event_type)
+{
+ const int attach_flag = current_inferior ()->attach_flag;
+
+ /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
+ if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
+ return FALSE;
+
+ /* If the inferior and the debugger share the same console, do nothing as
+ the inferior has also received the Ctrl-C event. */
+ if (!new_console && !attach_flag)
+ return TRUE;
+
+ if (!DebugBreakProcess (current_process_handle))
+ warning (_("\
+Could not interrupt program. Press Ctrl-c in the program console."));
+
+ /* Return true to tell that Ctrl-C has been handled. */
+ return TRUE;
+}
+
+/* Get the next event from the child. Return 1 if the event requires
+ handling by WFI (or whatever). */
+static int
+get_windows_debug_event (struct target_ops *ops,
+ int pid, struct target_waitstatus *ourstatus)
+{
+ BOOL debug_event;
+ DWORD continue_status, event_code;
+ thread_info *th;
+ static thread_info dummy_thread_info;
+ int retval = 0;
+
+ last_sig = TARGET_SIGNAL_0;
+
+ if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
+ goto out;
+
+ event_count++;
+ continue_status = DBG_CONTINUE;
+
+ event_code = current_event.dwDebugEventCode;
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ th = NULL;
+ have_saved_context = 0;
+
+ switch (event_code)
+ {
+ case CREATE_THREAD_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_THREAD_DEBUG_EVENT"));
+ if (saw_create != 1)
+ {
+ struct inferior *inf;
+ inf = find_inferior_pid (current_event.dwProcessId);
+ if (!saw_create && inf->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 = fake_create_process ();
+ if (retval)
+ saw_create++;
+ }
+ break;
+ }
+ /* Record the existence of this thread */
+ retval = current_event.dwThreadId;
+ th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.CreateThread.hThread);
+ break;
+
+ case EXIT_THREAD_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_THREAD_DEBUG_EVENT"));
if (current_event.dwThreadId != main_thread_id)
{
- child_delete_thread (current_event.dwThreadId);
+ windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId));
th = &dummy_thread_info;
}
break;
case CREATE_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"CREATE_PROCESS_DEBUG_EVENT"));
CloseHandle (current_event.u.CreateProcessInfo.hFile);
if (++saw_create != 1)
- {
- CloseHandle (current_event.u.CreateProcessInfo.hProcess);
- break;
- }
+ break;
current_process_handle = current_event.u.CreateProcessInfo.hProcess;
if (main_thread_id)
- child_delete_thread (main_thread_id);
+ windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
+ main_thread_id));
main_thread_id = current_event.dwThreadId;
/* Add the main thread */
- th = child_add_thread (main_thread_id,
- current_event.u.CreateProcessInfo.hThread);
- retval = ourstatus->value.related_pid = current_event.dwThreadId;
+ th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.CreateProcessInfo.hThread);
+ retval = current_event.dwThreadId;
break;
case EXIT_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXIT_PROCESS_DEBUG_EVENT"));
- if (saw_create != 1)
- break;
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
- CloseHandle (current_process_handle);
- retval = main_thread_id;
+ if (!windows_initialization_done)
+ {
+ target_terminal_ours ();
+ target_mourn_inferior ();
+ error (_("During startup program exited with code 0x%x."),
+ (unsigned int) current_event.u.ExitProcess.dwExitCode);
+ }
+ else if (saw_create == 1)
+ {
+ ourstatus->kind = TARGET_WAITKIND_EXITED;
+ ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
+ retval = main_thread_id;
+ }
break;
case LOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"LOAD_DLL_DEBUG_EVENT"));
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;
- re_enable_breakpoints_in_shlibs ();
break;
case UNLOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"UNLOAD_DLL_DEBUG_EVENT"));
if (saw_create != 1)
break;
catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
- registers_changed (); /* mark all regs invalid */
- /* ourstatus->kind = TARGET_WAITKIND_UNLOADED;
- does not exist yet. */
+ 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",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXCEPTION_DEBUG_EVENT"));
if (saw_create != 1)
break;
- if (handle_exception (ourstatus))
- retval = current_event.dwThreadId;
- else
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ switch (handle_exception (ourstatus))
+ {
+ 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;
case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"OUTPUT_DEBUG_STRING_EVENT"));
if (saw_create != 1)
break;
- if (handle_output_debug_string (ourstatus))
- retval = main_thread_id;
+ retval = handle_output_debug_string (ourstatus);
break;
default:
}
if (!retval || saw_create != 1)
- CHECK (child_continue (continue_status, -1));
+ {
+ if (continue_status == -1)
+ windows_resume (ops, minus_one_ptid, 0, 1);
+ else
+ CHECK (windows_continue (continue_status, -1));
+ }
else
{
- inferior_ptid = pid_to_ptid (retval);
+ inferior_ptid = ptid_build (current_event.dwProcessId, 0,
+ retval);
current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
}
return retval;
}
-/* Wait for interesting events to occur in the target process. */
+/* Wait for interesting events to occur in the target process. */
static ptid_t
-child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
+windows_wait (struct target_ops *ops,
+ ptid_t ptid, struct target_waitstatus *ourstatus, int options)
{
- int pid = PIDGET (ptid);
+ int pid = -1;
+
+ 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,
while (1)
{
- int retval = get_child_debug_event (pid, ourstatus);
+ int retval;
+
+ /* If the user presses Ctrl-c while the debugger is waiting
+ for an event, he expects the debugger to interrupt his program
+ and to get the prompt back. There are two possible situations:
+
+ - The debugger and the program do not share the console, in
+ which case the Ctrl-c event only reached the debugger.
+ In that case, the ctrl_c handler will take care of interrupting
+ the inferior. Note that this case is working starting with
+ Windows XP. For Windows 2000, Ctrl-C should be pressed in the
+ inferior console.
+
+ - The debugger and the program share the same console, in which
+ case both debugger and inferior will receive the Ctrl-c event.
+ In that case the ctrl_c handler will ignore the event, as the
+ Ctrl-c event generated inside the inferior will trigger the
+ expected debug event.
+
+ FIXME: brobecker/2008-05-20: If the inferior receives the
+ signal first and the delay until GDB receives that signal
+ is sufficiently long, GDB can sometimes receive the SIGINT
+ after we have unblocked the CTRL+C handler. This would
+ lead to the debugger stopping prematurely while handling
+ the new-thread event that comes with the handling of the SIGINT
+ inside the inferior, and then stop again immediately when
+ the user tries to resume the execution in the inferior.
+ This is a classic race that we should try to fix one day. */
+ SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
+ retval = get_windows_debug_event (ops, pid, ourstatus);
+ SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
+
if (retval)
- return pid_to_ptid (retval);
+ return ptid_build (current_event.dwProcessId, 0, retval);
else
{
int detach = 0;
detach = deprecated_ui_loop_hook (0);
if (detach)
- child_kill_inferior ();
+ windows_kill_inferior (ops);
}
}
}
static void
-do_initial_child_stuff (DWORD pid)
+do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
{
extern int stop_after_trap;
int i;
+ struct inferior *inf;
+ struct thread_info *tp;
last_sig = TARGET_SIGNAL_0;
event_count = 0;
exception_count = 0;
+ open_process_used = 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 (&deprecated_child_ops);
- disable_breakpoints_in_shlibs (1);
- child_clear_solibs ();
+ push_target (ops);
+ disable_breakpoints_in_shlibs ();
+ windows_clear_solib ();
clear_proceed_status ();
init_wait_for_inferior ();
- target_terminal_init ();
+ inf = current_inferior ();
+ inferior_appeared (inf, pid);
+ inf->attach_flag = attaching;
+
+ /* Make the new process the current inferior, so terminal handling
+ can rely on it. When attaching, we don't know about any thread
+ id here, but that's OK --- nothing should be referencing the
+ current thread until we report an event out of windows_wait. */
+ inferior_ptid = pid_to_ptid (pid);
+
+ terminal_init_inferior_with_pgrp (pid);
target_terminal_inferior ();
+ windows_initialization_done = 0;
+ inf->stop_soon = STOP_QUIETLY;
while (1)
{
stop_after_trap = 1;
- wait_for_inferior ();
- if (stop_signal != TARGET_SIGNAL_TRAP)
- resume (0, stop_signal);
+ wait_for_inferior (0);
+ tp = inferior_thread ();
+ if (tp->stop_signal != TARGET_SIGNAL_TRAP)
+ resume (0, tp->stop_signal);
else
break;
}
+
+ windows_initialization_done = 1;
+ inf->stop_soon = NO_STOP_QUIETLY;
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.
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))
+ if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
goto out;
new_priv.PrivilegeCount = 1;
#if 0
/* Disabled, otherwise every `attach' in an unprivileged user session
would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
- child_attach(). */
+ windows_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)
/* Attach to process PID, then initialize for debugging it. */
static void
-child_attach (char *args, int from_tty)
+windows_attach (struct target_ops *ops, char *args, int from_tty)
{
BOOL ok;
DWORD pid;
pid = strtoul (args, 0, 0); /* Windows pid */
- child_init_thread_list ();
+ windows_init_thread_list ();
ok = DebugActiveProcess (pid);
saw_create = 0;
+#ifdef __CYGWIN__
if (!ok)
{
/* Try fall back to Cygwin pid */
if (pid > 0)
ok = DebugActiveProcess (pid);
+ }
+#endif
- if (!ok)
- error (_("Can't attach to process."));
- }
-
- if (has_detach_ability ())
- DebugSetProcessKillOnExit (FALSE);
+ if (!ok)
+ error (_("Can't attach to process."));
- attach_flag = 1;
+ DebugSetProcessKillOnExit (FALSE);
if (from_tty)
{
gdb_flush (gdb_stdout);
}
- do_initial_child_stuff (pid);
+ do_initial_windows_stuff (ops, pid, 1);
target_terminal_ours ();
}
static void
-child_detach (char *args, int from_tty)
+windows_detach (struct target_ops *ops, char *args, int from_tty)
{
int detached = 1;
- if (has_detach_ability ())
+ ptid_t ptid = {-1};
+ windows_resume (ops, ptid, 0, TARGET_SIGNAL_0);
+
+ if (!DebugActiveProcessStop (current_event.dwProcessId))
{
- delete_command (NULL, 0);
- child_continue (DBG_CONTINUE, -1);
- if (!DebugActiveProcessStop (current_event.dwProcessId))
- {
- error (_("Can't detach process %lu (error %lu)"),
- current_event.dwProcessId, GetLastError ());
- detached = 0;
- }
- DebugSetProcessKillOnExit (FALSE);
+ 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);
current_event.dwProcessId);
gdb_flush (gdb_stdout);
}
+
inferior_ptid = null_ptid;
- unpush_target (&deprecated_child_ops);
+ detach_inferior (current_event.dwProcessId);
+
+ unpush_target (ops);
}
-char *
-child_pid_to_exec_file (int pid)
+static char *
+windows_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. */
- /* TODO: Also find native Windows processes using CW_GETPINFO_FULL. */
-
static char path[MAX_PATH + 1];
- char *path_ptr = NULL;
- 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)
+
+#ifdef __CYGWIN__
+ /* Try to find exe name as symlink target of /proc/<pid>/exe */
+ int nchars;
+ char procexe[sizeof ("/proc/4294967295/exe")];
+ sprintf (procexe, "/proc/%u/exe", pid);
+ nchars = readlink (procexe, path, sizeof(path));
+ if (nchars > 0 && nchars < sizeof (path))
{
- if (pinfo->dwProcessId == current_event.dwProcessId) /* Got it */
- {
- cygwin_conv_to_full_posix_path (pinfo->progname, path);
- path_ptr = path;
- break;
- }
+ path[nchars] = '\0'; /* Got it */
+ return path;
}
- cygwin_internal (CW_UNLOCK_PINFO);
- return path_ptr;
+#endif
+
+ /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
+ of gdb, or we're trying to debug a non-Cygwin windows executable. */
+ if (!get_module_name (0, path))
+ path[0] = '\0';
+
+ return path;
}
/* Print status information about what we're accessing. */
static void
-child_files_info (struct target_ops *ignore)
+windows_files_info (struct target_ops *ignore)
{
+ struct inferior *inf = current_inferior ();
+
printf_unfiltered ("\tUsing the running image of %s %s.\n",
- attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
+ inf->attach_flag ? "attached" : "child",
+ target_pid_to_str (inferior_ptid));
}
static void
-child_open (char *arg, int from_tty)
+windows_open (char *arg, int from_tty)
{
error (_("Use the \"run\" command to start a Unix child process."));
}
-/* Start an inferior win32 child process and sets inferior_ptid to its pid.
+/* Start an inferior windows 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 (char *exec_file, char *allargs, char **env,
- int from_tty)
+windows_create_inferior (struct target_ops *ops, char *exec_file,
+ char *allargs, char **in_env, int from_tty)
{
- char *winenv;
- char *temp;
- int envlen;
- int i;
STARTUPINFO si;
PROCESS_INFORMATION pi;
BOOL ret;
char *toexec;
char shell[MAX_PATH + 1]; /* Path to shell */
const char *sh;
+#ifdef __CYGWIN__
int tty;
int ostdin, ostdout, ostderr;
+#else
+ HANDLE tty;
+#endif
+ const char *inferior_io_terminal = get_inferior_io_terminal ();
if (!exec_file)
error (_("No executable specified, use `target exec'."));
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
+#ifdef __CYGWIN__
if (!useshell)
{
flags = DEBUG_ONLY_THIS_PROCESS;
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;
- 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 used 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 (cygwin_posix_path_list_p (env[i] + len))
- envlen += len
- + cygwin_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 (cygwin_posix_path_list_p (env[i] + len))
- {
- memcpy (temp, env[i], len);
- cygwin_posix_to_win32_path_list (env[i] + len, temp + len);
- }
- else
- strcpy (temp, env[i]);
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- strcpy (temp, env[i]);
-
- temp += strlen (temp) + 1;
- }
-
- /* Final nil string to terminate new env. */
- *temp = 0;
- }
+ cygwin_internal (CW_SYNC_WINENV);
if (!inferior_io_terminal)
tty = ostdin = ostdout = ostderr = -1;
dup2 (tty, 2);
}
}
+#else
+ if (!inferior_io_terminal)
+ tty = INVALID_HANDLE_VALUE;
+ else
+ {
+ SECURITY_ATTRIBUTES sa;
+ sa.nLength = sizeof(sa);
+ sa.lpSecurityDescriptor = 0;
+ sa.bInheritHandle = TRUE;
+ tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
+ 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+ if (tty == INVALID_HANDLE_VALUE)
+ warning (_("Warning: Failed to open TTY %s, error %#x."),
+ inferior_io_terminal, (unsigned) GetLastError ());
+ else
+ {
+ si.hStdInput = tty;
+ si.hStdOutput = tty;
+ si.hStdError = tty;
+ si.dwFlags |= STARTF_USESTDHANDLES;
+ }
+ }
+#endif
- child_init_thread_list ();
+ windows_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);
+
+#ifdef __CYGWIN__
if (tty >= 0)
{
close (tty);
close (ostdout);
close (ostderr);
}
+#else
+ if (tty != INVALID_HANDLE_VALUE)
+ CloseHandle (tty);
+#endif
if (!ret)
error (_("Error creating process %s, (error %d)."),
else
saw_create = 0;
- do_initial_child_stuff (pi.dwProcessId);
+ do_initial_windows_stuff (ops, pi.dwProcessId, 0);
- /* child_continue (DBG_CONTINUE, -1); */
- proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
+ /* windows_continue (DBG_CONTINUE, -1); */
}
static void
-child_mourn_inferior (void)
+windows_mourn_inferior (struct target_ops *ops)
{
- (void) child_continue (DBG_CONTINUE, -1);
+ (void) windows_continue (DBG_CONTINUE, -1);
i386_cleanup_dregs();
- unpush_target (&deprecated_child_ops);
+ if (open_process_used)
+ {
+ CHECK (CloseHandle (current_process_handle));
+ open_process_used = 0;
+ }
+ unpush_target (ops);
generic_mourn_inferior ();
}
^C on the controlling terminal. */
static void
-child_stop (void)
+windows_stop (ptid_t ptid)
{
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,
+static int
+windows_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
int write, struct mem_attrib *mem,
struct target_ops *target)
{
- DWORD done = 0;
+ SIZE_T done = 0;
if (write)
{
DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
- len, (DWORD) memaddr));
- if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
+ len, (DWORD) (uintptr_t) memaddr));
+ if (!WriteProcessMemory (current_process_handle,
+ (LPVOID) (uintptr_t) memaddr, our,
len, &done))
done = 0;
- FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
+ FlushInstructionCache (current_process_handle,
+ (LPCVOID) (uintptr_t) memaddr, len);
}
else
{
DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
- len, (DWORD) memaddr));
- if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
+ len, (DWORD) (uintptr_t) memaddr));
+ if (!ReadProcessMemory (current_process_handle,
+ (LPCVOID) (uintptr_t) memaddr, our,
len, &done))
done = 0;
}
return done;
}
-void
-child_kill_inferior (void)
+static void
+windows_kill_inferior (struct target_ops *ops)
{
CHECK (TerminateProcess (current_process_handle, 0));
for (;;)
{
- if (!child_continue (DBG_CONTINUE, -1))
+ if (!windows_continue (DBG_CONTINUE, -1))
break;
if (!WaitForDebugEvent (¤t_event, INFINITE))
break;
break;
}
- CHECK (CloseHandle (current_process_handle));
+ target_mourn_inferior (); /* or just windows_mourn_inferior? */
+}
- /* this may fail in an attached process so don't check. */
- if (current_thread && current_thread->h)
- (void) CloseHandle (current_thread->h);
- target_mourn_inferior (); /* or just child_mourn_inferior? */
+static void
+windows_prepare_to_store (struct regcache *regcache)
+{
+ /* Do nothing, since we can store individual regs */
}
-void
-child_resume (ptid_t ptid, int step, enum target_signal sig)
+static int
+windows_can_run (void)
{
- thread_info *th;
- DWORD continue_status = DBG_CONTINUE;
+ return 1;
+}
- int pid = PIDGET (ptid);
+static void
+windows_close (int x)
+{
+ DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
+ PIDGET (inferior_ptid)));
+}
- if (sig != TARGET_SIGNAL_0)
+/* Convert pid to printable format. */
+static char *
+windows_pid_to_str (struct target_ops *ops, ptid_t ptid)
+{
+ static char buf[80];
+
+ if (ptid_get_tid (ptid) != 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));
+ snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
+ ptid_get_pid (ptid), ptid_get_tid (ptid));
+ return buf;
}
- last_sig = TARGET_SIGNAL_0;
+ return normal_pid_to_str (ptid);
+}
- DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
- pid, step, sig));
+static LONGEST
+windows_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;
- /* Get context for currently selected thread */
- th = thread_rec (current_event.dwThreadId, FALSE);
- if (th)
- {
- if (step)
- {
- /* Single step by setting t bit */
- child_fetch_inferior_registers (PS_REGNUM);
- th->context.EFlags |= FLAG_TRACE_BIT;
- }
+ if (writebuf)
+ return -1;
- 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;
- }
- }
+ obstack_init (&obstack);
+ obstack_grow_str (&obstack, "<library-list>\n");
+ for (so = solib_start.next; so; so = so->next)
+ windows_xfer_shared_library (so->so_name, (CORE_ADDR) (uintptr_t) so->lm_info->load_addr,
+ target_gdbarch, &obstack);
+ obstack_grow_str0 (&obstack, "</library-list>\n");
- /* Allow continuing with the same signal that interrupted us.
- Otherwise complain. */
+ 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);
- child_continue (continue_status, pid);
+ obstack_free (&obstack, NULL);
+ return len;
}
-static void
-child_prepare_to_store (void)
+static LONGEST
+windows_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
- /* Do nothing, since we can store individual regs */
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return (*ops->deprecated_xfer_memory) (offset, readbuf,
+ len, 0/*read*/, 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 windows_xfer_shared_libraries (ops, object, annex, readbuf,
+ writebuf, offset, len);
+
+ default:
+ if (ops->beneath != NULL)
+ return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
+ readbuf, writebuf, offset, len);
+ return -1;
+ }
}
-static int
-child_can_run (void)
+static ptid_t
+windows_get_ada_task_ptid (long lwp, long thread)
{
- return 1;
+ return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
}
static void
-child_close (int x)
-{
- DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n",
- PIDGET (inferior_ptid)));
+init_windows_ops (void)
+{
+ windows_ops.to_shortname = "child";
+ windows_ops.to_longname = "Win32 child process";
+ windows_ops.to_doc = "Win32 child process (started by the \"run\" command).";
+ windows_ops.to_open = windows_open;
+ windows_ops.to_close = windows_close;
+ windows_ops.to_attach = windows_attach;
+ windows_ops.to_attach_no_wait = 1;
+ windows_ops.to_detach = windows_detach;
+ windows_ops.to_resume = windows_resume;
+ windows_ops.to_wait = windows_wait;
+ windows_ops.to_fetch_registers = windows_fetch_inferior_registers;
+ windows_ops.to_store_registers = windows_store_inferior_registers;
+ windows_ops.to_prepare_to_store = windows_prepare_to_store;
+ windows_ops.deprecated_xfer_memory = windows_xfer_memory;
+ windows_ops.to_xfer_partial = windows_xfer_partial;
+ windows_ops.to_files_info = windows_files_info;
+ windows_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ windows_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ windows_ops.to_terminal_init = terminal_init_inferior;
+ windows_ops.to_terminal_inferior = terminal_inferior;
+ windows_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ windows_ops.to_terminal_ours = terminal_ours;
+ windows_ops.to_terminal_save_ours = terminal_save_ours;
+ windows_ops.to_terminal_info = child_terminal_info;
+ windows_ops.to_kill = windows_kill_inferior;
+ windows_ops.to_create_inferior = windows_create_inferior;
+ windows_ops.to_mourn_inferior = windows_mourn_inferior;
+ windows_ops.to_can_run = windows_can_run;
+ windows_ops.to_thread_alive = windows_thread_alive;
+ windows_ops.to_pid_to_str = windows_pid_to_str;
+ windows_ops.to_stop = windows_stop;
+ windows_ops.to_stratum = process_stratum;
+ windows_ops.to_has_all_memory = default_child_has_all_memory;
+ windows_ops.to_has_memory = default_child_has_memory;
+ windows_ops.to_has_stack = default_child_has_stack;
+ windows_ops.to_has_registers = default_child_has_registers;
+ windows_ops.to_has_execution = default_child_has_execution;
+ windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file;
+ windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid;
+
+ i386_use_watchpoints (&windows_ops);
+
+ i386_dr_low.set_control = cygwin_set_dr7;
+ i386_dr_low.set_addr = cygwin_set_dr;
+ i386_dr_low.reset_addr = NULL;
+ i386_dr_low.get_status = cygwin_get_dr6;
+
+ /* i386_dr_low.debug_register_length field is set by
+ calling i386_set_debug_register_length function
+ in processor windows specific native file. */
+
+ windows_ops.to_magic = OPS_MAGIC;
}
static void
-init_child_ops (void)
-{
- deprecated_child_ops.to_shortname = "child";
- deprecated_child_ops.to_longname = "Win32 child process";
- deprecated_child_ops.to_doc = "Win32 child process (started by the \"run\" command).";
- deprecated_child_ops.to_open = child_open;
- deprecated_child_ops.to_close = child_close;
- deprecated_child_ops.to_attach = child_attach;
- deprecated_child_ops.to_detach = child_detach;
- deprecated_child_ops.to_resume = child_resume;
- deprecated_child_ops.to_wait = child_wait;
- deprecated_child_ops.to_fetch_registers = child_fetch_inferior_registers;
- deprecated_child_ops.to_store_registers = child_store_inferior_registers;
- deprecated_child_ops.to_prepare_to_store = child_prepare_to_store;
- deprecated_child_ops.deprecated_xfer_memory = child_xfer_memory;
- deprecated_child_ops.to_files_info = child_files_info;
- deprecated_child_ops.to_insert_breakpoint = memory_insert_breakpoint;
- deprecated_child_ops.to_remove_breakpoint = memory_remove_breakpoint;
- deprecated_child_ops.to_terminal_init = terminal_init_inferior;
- deprecated_child_ops.to_terminal_inferior = terminal_inferior;
- deprecated_child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- deprecated_child_ops.to_terminal_ours = terminal_ours;
- deprecated_child_ops.to_terminal_save_ours = terminal_save_ours;
- deprecated_child_ops.to_terminal_info = child_terminal_info;
- deprecated_child_ops.to_kill = child_kill_inferior;
- deprecated_child_ops.to_create_inferior = child_create_inferior;
- deprecated_child_ops.to_mourn_inferior = child_mourn_inferior;
- deprecated_child_ops.to_can_run = child_can_run;
- deprecated_child_ops.to_thread_alive = win32_child_thread_alive;
- deprecated_child_ops.to_pid_to_str = cygwin_pid_to_str;
- deprecated_child_ops.to_stop = child_stop;
- deprecated_child_ops.to_stratum = process_stratum;
- deprecated_child_ops.to_has_all_memory = 1;
- deprecated_child_ops.to_has_memory = 1;
- deprecated_child_ops.to_has_stack = 1;
- deprecated_child_ops.to_has_registers = 1;
- deprecated_child_ops.to_has_execution = 1;
- deprecated_child_ops.to_magic = OPS_MAGIC;
- deprecated_child_ops.to_pid_to_exec_file = child_pid_to_exec_file;
+set_windows_aliases (char *argv0)
+{
+ add_info_alias ("dll", "sharedlibrary", 1);
}
void
-_initialize_win32_nat (void)
+_initialize_windows_nat (void)
{
struct cmd_list_element *c;
- init_child_ops ();
+ init_windows_ops ();
c = add_com ("dll-symbols", class_files, dll_symbol_command,
_("Load dll library symbols from FILE."));
add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
+ add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1);
+
+ add_com_alias ("assf", "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, /* 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, /* FIXME: i18n: */
&setlist, &showlist);
- add_info ("dll", info_dll_command, _("Status of loaded DLLs."));
- add_info_alias ("sharedlibrary", "dll", 1);
-
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 (&deprecated_child_ops);
+ add_target (&windows_ops);
+ deprecated_init_ui_hook = set_windows_aliases;
}
/* Hardware watchpoint support, adapted from go32-nat.c code. */
/* 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 child_continue is called. */
-void
+ actually set up when windows_continue is called. */
+static void
cygwin_set_dr (int i, CORE_ADDR addr)
{
if (i < 0 || i > 3)
internal_error (__FILE__, __LINE__,
_("Invalid register %d in cygwin_set_dr.\n"), i);
- dr[i] = (unsigned) addr;
+ dr[i] = 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 child_wait. */
-void
-cygwin_set_dr7 (unsigned val)
+ will be actually set up in windows_wait. */
+static void
+cygwin_set_dr7 (unsigned long val)
{
- dr[7] = val;
+ dr[7] = (CORE_ADDR) 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
+static unsigned long
cygwin_get_dr6 (void)
{
- return dr[6];
+ return (unsigned long) dr[6];
}
-/* Determine if the thread referenced by "pid" is alive
+/* Determine if the thread referenced by "ptid" 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. */
+ it means that the thread has died. Otherwise it is assumed to be alive. */
static int
-win32_child_thread_alive (ptid_t ptid)
+windows_thread_alive (struct target_ops *ops, ptid_t ptid)
{
- int pid = PIDGET (ptid);
+ int tid;
+
+ gdb_assert (ptid_get_tid (ptid) != 0);
+ tid = ptid_get_tid (ptid);
- return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
+ return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
FALSE : TRUE;
}
-/* Convert pid to printable format. */
-char *
-cygwin_pid_to_str (ptid_t ptid)
+void
+_initialize_check_for_gdb_ini (void)
{
- static char buf[80];
- int pid = PIDGET (ptid);
+ char *homedir;
+ if (inhibit_gdbinit)
+ return;
- if ((DWORD) pid == current_event.dwProcessId)
- sprintf (buf, "process %d", pid);
- else
- sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
- return buf;
+ 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);
+ }
+ }
}
-static int
-core_dll_symbols_add (char *dll_name, DWORD base_addr)
+/* Define dummy functions which always return error for the rare cases where
+ these functions could not be found. */
+static BOOL WINAPI
+bad_DebugActiveProcessStop (DWORD w)
{
- struct objfile *objfile;
- char *objfile_basename;
- const char *dll_basename;
-
- if (!(dll_basename = strrchr (dll_name, '/')))
- dll_basename = dll_name;
- else
- dll_basename++;
-
- ALL_OBJFILES (objfile)
- {
- objfile_basename = strrchr (objfile->name, '/');
-
- if (objfile_basename &&
- strcmp (dll_basename, objfile_basename + 1) == 0)
- {
- printf_unfiltered ("%08lx:%s (symbols previously loaded)\n",
- base_addr, dll_name);
- goto out;
- }
- }
-
- register_loaded_dll (dll_name, base_addr + 0x1000);
- solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000);
-
- out:
- return 1;
+ return FALSE;
}
-
-typedef struct
+static BOOL WINAPI
+bad_DebugBreakProcess (HANDLE w)
{
- struct target_ops *target;
- bfd_vma addr;
-} map_code_section_args;
-
-static void
-map_single_dll_code_section (bfd * abfd, asection * sect, void *obj)
+ return FALSE;
+}
+static BOOL WINAPI
+bad_DebugSetProcessKillOnExit (BOOL w)
{
- int old;
- int update_coreops;
- struct section_table *new_target_sect_ptr;
-
- map_code_section_args *args = (map_code_section_args *) obj;
- struct target_ops *target = args->target;
- if (sect->flags & SEC_CODE)
- {
- update_coreops = core_ops.to_sections == target->to_sections;
-
- if (target->to_sections)
- {
- old = target->to_sections_end - target->to_sections;
- target->to_sections = (struct section_table *)
- xrealloc ((char *) target->to_sections,
- (sizeof (struct section_table)) * (1 + old));
- }
- else
- {
- old = 0;
- target->to_sections = (struct section_table *)
- xmalloc ((sizeof (struct section_table)));
- }
- target->to_sections_end = target->to_sections + (1 + old);
-
- /* Update the to_sections field in the core_ops structure
- if needed. */
- if (update_coreops)
- {
- core_ops.to_sections = target->to_sections;
- core_ops.to_sections_end = target->to_sections_end;
- }
- new_target_sect_ptr = target->to_sections + old;
- new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect);
- new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) +
- bfd_section_size (abfd, sect);;
- new_target_sect_ptr->the_bfd_section = sect;
- new_target_sect_ptr->bfd = abfd;
- }
+ return FALSE;
}
-
-static int
-dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target)
+static BOOL WINAPI
+bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
{
- bfd *dll_bfd;
- map_code_section_args map_args;
- asection *lowest_sect;
- char *name;
- if (dll_name == NULL || target == NULL)
- return 0;
- name = xstrdup (dll_name);
- dll_bfd = bfd_openr (name, "pei-i386");
- if (dll_bfd == NULL)
- return 0;
-
- if (bfd_check_format (dll_bfd, bfd_object))
- {
- lowest_sect = bfd_get_section_by_name (dll_bfd, ".text");
- if (lowest_sect == NULL)
- return 0;
- map_args.target = target;
- map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect);
-
- bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args));
- }
-
- return 1;
+ return FALSE;
}
-
-static void
-core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj)
+static DWORD WINAPI
+bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
{
- struct target_ops *target = (struct target_ops *) obj;
-
- DWORD base_addr;
+ return 0;
+}
+static BOOL WINAPI
+bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
+{
+ return FALSE;
+}
- int dll_name_size;
- char *dll_name = NULL;
- char *buf = NULL;
- struct win32_pstatus *pstatus;
- char *p;
+static BOOL WINAPI
+bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
+{
+ return FALSE;
+}
- if (strncmp (sect->name, ".module", 7))
- return;
+/* Load any functions which may not be available in ancient versions
+ of Windows. */
+void
+_initialize_loadable (void)
+{
+ HMODULE hm = NULL;
- buf = (char *) xmalloc (bfd_get_section_size (sect) + 1);
- if (!buf)
+ hm = LoadLibrary ("kernel32.dll");
+ if (hm)
{
- printf_unfiltered ("memory allocation failed for %s\n", sect->name);
- goto out;
+ dyn_DebugActiveProcessStop = (void *)
+ GetProcAddress (hm, "DebugActiveProcessStop");
+ dyn_DebugBreakProcess = (void *)
+ GetProcAddress (hm, "DebugBreakProcess");
+ dyn_DebugSetProcessKillOnExit = (void *)
+ GetProcAddress (hm, "DebugSetProcessKillOnExit");
}
- if (!bfd_get_section_contents (abfd, sect, buf, 0, bfd_get_section_size (sect)))
- goto out;
-
- pstatus = (struct win32_pstatus *) buf;
- memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr));
- dll_name_size = pstatus->data.module_info.module_name_size;
- if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > bfd_get_section_size (sect))
- goto out;
-
- dll_name = (char *) xmalloc (dll_name_size + 1);
- if (!dll_name)
+ /* Set variables to dummy versions of these processes if the function
+ wasn't found in kernel32.dll. */
+ if (!dyn_DebugBreakProcess)
+ dyn_DebugBreakProcess = bad_DebugBreakProcess;
+ if (!dyn_DebugActiveProcessStop || !dyn_DebugSetProcessKillOnExit)
{
- printf_unfiltered ("memory allocation failed for %s\n", sect->name);
- goto out;
+ dyn_DebugActiveProcessStop = bad_DebugActiveProcessStop;
+ dyn_DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
}
- strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size);
-
- while ((p = strchr (dll_name, '\\')))
- *p = '/';
- if (!core_dll_symbols_add (dll_name, (DWORD) base_addr))
- printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name);
-
- if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target))
- printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name);
-
-out:
- if (buf)
- xfree (buf);
- if (dll_name)
- xfree (dll_name);
- return;
-}
-
-void
-child_solib_add (char *filename, int from_tty, struct target_ops *target,
- int readsyms)
-{
- if (!readsyms)
- return;
- if (core_bfd)
+ /* Load optional functions used for retrieving filename information
+ associated with the currently debugged process or its dlls. */
+ hm = LoadLibrary ("psapi.dll");
+ if (hm)
{
- child_clear_solibs ();
- bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target);
+ dyn_EnumProcessModules = (void *)
+ GetProcAddress (hm, "EnumProcessModules");
+ dyn_GetModuleInformation = (void *)
+ GetProcAddress (hm, "GetModuleInformation");
+ dyn_GetModuleFileNameExA = (void *)
+ GetProcAddress (hm, "GetModuleFileNameExA");
}
- else
- {
- if (solib_end && solib_end->name)
- solib_end->objfile = solib_symbols_add (solib_end->name, from_tty,
- solib_end->load_addr);
- }
-}
-static void
-fetch_elf_core_registers (char *core_reg_sect,
- unsigned core_reg_size,
- int which,
- CORE_ADDR reg_addr)
-{
- int r;
- if (core_reg_size < sizeof (CONTEXT))
+ if (!dyn_EnumProcessModules || !dyn_GetModuleInformation || !dyn_GetModuleFileNameExA)
{
- error (_("Core file register section too small (%u bytes)."), core_reg_size);
- return;
+ /* Set variables to dummy versions of these processes if the function
+ wasn't found in psapi.dll. */
+ dyn_EnumProcessModules = bad_EnumProcessModules;
+ dyn_GetModuleInformation = bad_GetModuleInformation;
+ dyn_GetModuleFileNameExA = bad_GetModuleFileNameExA;
+ /* This will probably fail on Windows 9x/Me. Let the user know that we're
+ missing some functionality. */
+ warning(_("cannot automatically find executable file or library to read symbols.\nUse \"file\" or \"dll\" command to load executable/libraries directly."));
}
- for (r = 0; r < NUM_REGS; r++)
- regcache_raw_supply (current_regcache, r, core_reg_sect + mappings[r]);
-}
-
-static struct core_fns win32_elf_core_fns =
-{
- bfd_target_elf_flavour,
- default_check_format,
- default_core_sniffer,
- fetch_elf_core_registers,
- NULL
-};
-
-void
-_initialize_core_win32 (void)
-{
- deprecated_add_core_fns (&win32_elf_core_fns);
-}
-
-void
-_initialize_check_for_gdb_ini (void)
-{
- char *homedir;
- if (inhibit_gdbinit)
- return;
- homedir = getenv ("HOME");
- if (homedir)
+ hm = LoadLibrary ("advapi32.dll");
+ if (hm)
{
- 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);
- }
+ dyn_OpenProcessToken = (void *)
+ GetProcAddress (hm, "OpenProcessToken");
+ dyn_LookupPrivilegeValueA = (void *)
+ GetProcAddress (hm, "LookupPrivilegeValueA");
+ dyn_AdjustTokenPrivileges = (void *)
+ GetProcAddress (hm, "AdjustTokenPrivileges");
+ /* Only need to set one of these since if OpenProcessToken fails nothing
+ else is needed. */
+ if (!dyn_OpenProcessToken || !dyn_LookupPrivilegeValueA || !dyn_AdjustTokenPrivileges)
+ dyn_OpenProcessToken = bad_OpenProcessToken;
}
}
projects / deliverable / binutils-gdb.git / blobdiff