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* NEWS: Add information about win32 and arm code.

Browse source 
* win32-nat.c: Renamed from win32.c
	* config/i386/win32.mh: Renamed from config/i386/i386win32.mh.
	* config/i386/win32.mt: Renamed from config/i386/i386win32.mt.
	* config/i386/tm-win32.h: Renamed from config/i386/tm-i386win32.h.
	* config/i386/xm-win32.h: Renamed from config/i386/xm-i386win32.h.
	* configure.in (i[345]86-*-win32): Updated to cope with filename changes.
	* configure: Regenerated.
This commit is contained in:
Steve Chamberlain 1995-10-09 21:54:26 +00:00
parent a6d5af315d
commit 24e6097868
13 changed files with 680 additions and 660 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
gdb/.Sanitize
View file

@ -351,7 +351,7 @@ vax-tdep.c
vx-share
w65-tdep.c
w89k-rom.c
win32.c
win32-nat.c
xcoffread.c
xcoffsolib.c
xcoffsolib.h

11
gdb/ChangeLog
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@ -1,3 +1,14 @@
Mon Oct 9 14:36:29 1995 steve chamberlain <sac@slash.cygnus.com>
* NEWS: Add information about win32 and arm code.
* win32-nat.c: Renamed from win32.c
* config/i386/win32.mh: Renamed from config/i386/i386win32.mh.
* config/i386/win32.mt: Renamed from config/i386/i386win32.mt.
* config/i386/tm-win32.h: Renamed from config/i386/tm-i386win32.h.
* config/i386/xm-win32.h: Renamed from config/i386/xm-i386win32.h.
* configure.in (i[345]86-*-win32): Updated to cope with filename changes.
* configure: Regenerated.
Sun Oct 8 18:01:04 1995 Per Bothner <bothner@kalessin.cygnus.com>
* ch-exp.y (yylex): Also look for '$' following '$'.

8
gdb/NEWS
View file

@ -12,6 +12,14 @@ about volatile variables, thus making it impossible to debug targets
which use memory mapped I/O devices. `set remotecache off' turns the
the data cache off.
* New native configurations
Microsoft NT and Microsoft Windows95 i[345]86-*-win32
* New Targets
ARM via RDP protocol arm-*-*
*** Changes in GDB-4.14:
* New native configurations

12
gdb/config/i386/.Sanitize
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@ -34,9 +34,9 @@ i386bsd.mh
i386bsd.mt
i386lynx.mh
i386lynx.mt
i386mach.mh
i386m3.mh
i386m3.mt
i386mach.mh
i386mk.mh
i386mk.mt
i386nw.mt
@ -50,14 +50,13 @@ i386v.mt
i386v32.mh
i386v4.mh
i386v4.mt
i386win32.mh
i386win32.mt
linux.mh
linux.mt
nbsd.mh
nbsd.mt
ncr3000.mh
ncr3000.mt
nm-fbsd.h
nm-i386aix.h
nm-i386bsd.h
nm-i386lynx.h
@ -66,7 +65,6 @@ nm-i386sco.h
nm-i386sco4.h
nm-i386v.h
nm-i386v4.h
nm-fbsd.h
nm-linux.h
nm-m3.h
nm-nbsd.h
@ -90,13 +88,15 @@ tm-i386nw.h
tm-i386os9k.h
tm-i386v.h
tm-i386v4.h
tm-i386win32.h
tm-linux.h
tm-nbsd.h
tm-ptx.h
tm-ptx4.h
tm-sun386.h
tm-symmetry.h
tm-win32.h
win32.mh
win32.mt
xm-go32.h
xm-i386aix.h
xm-i386bsd.h
@ -108,13 +108,13 @@ xm-i386sco.h
xm-i386v.h
xm-i386v32.h
xm-i386v4.h
xm-i386win32.h
xm-linux.h
xm-nbsd.h
xm-ptx.h
xm-ptx4.h
xm-sun386.h
xm-symmetry.h
xm-win32.h
Things-to-lose:

5
gdb/config/i386/i386win32.mh
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@ -1,5 +0,0 @@
MH_CFLAGS=
XM_FILE=xm-i386win32.h
TERMCAP=
XDEPFILES=win32.o

0
gdb/config/i386/tm-i386win32.h → gdb/config/i386/tm-win32.h
View file

5
gdb/config/i386/win32.mh Normal file
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@ -0,0 +1,5 @@
MH_CFLAGS=
XM_FILE=xm-win32.h
TERMCAP=
NATDEPFILES=win32-nat.o

3
gdb/config/i386/i386win32.mt → gdb/config/i386/win32.mt
View file

@ -1,5 +1,6 @@
# Target: Intel 386 run win32
TDEPFILES= i386-tdep.o i387-tdep.o
TM_FILE= tm-i386win32.h
TM_FILE= tm-win32.h

0
gdb/config/i386/xm-i386win32.h → gdb/config/i386/xm-win32.h
View file

4
gdb/configure vendored
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@ -2039,7 +2039,7 @@ i[345]86-*-unixware) gdb_host=i386v4 ;;
i[345]86-*-sysv*) gdb_host=i386v ;;
i[345]86-*-isc*) gdb_host=i386v32 ;;
i[345]86-*-os9k) gdb_host=i386os9k ;;
i[345]86-*-win32*) gdb_host=i386win32 ;;
i[345]86-*-win32*) gdb_host=win32 ;;
m680[01]0-sun-sunos3*) gdb_host=sun2os3 ;;
m680[01]0-sun-sunos4*) gdb_host=sun2os4 ;;
m68030-sony-*) gdb_host=news1000 ;;
@ -2204,7 +2204,7 @@ i[345]86-*-mach*) gdb_target=i386mach ;;
i[345]86-*-netware*) gdb_target=i386nw
configdirs="${configdirs} nlm" ;;
i[345]86-*-osf1mk*) gdb_target=i386mk ;;
i[345]86-*-win32) gdb_target=i386win32 ;;
i[345]86-*-win32) gdb_target=win32 ;;
i960-*-bout*) gdb_target=vxworks960 ;;
i960-*-coff*) gdb_target=nindy960 ;;

4
gdb/configure.in
View file

@ -152,7 +152,7 @@ i[345]86-*-unixware) gdb_host=i386v4 ;;
i[345]86-*-sysv*) gdb_host=i386v ;;
i[345]86-*-isc*) gdb_host=i386v32 ;;
i[345]86-*-os9k) gdb_host=i386os9k ;;
i[345]86-*-win32*) gdb_host=i386win32 ;;
i[345]86-*-win32*) gdb_host=win32 ;;
m680[01]0-sun-sunos3*) gdb_host=sun2os3 ;;
m680[01]0-sun-sunos4*) gdb_host=sun2os4 ;;
m68030-sony-*) gdb_host=news1000 ;;
@ -317,7 +317,7 @@ i[345]86-*-mach*) gdb_target=i386mach ;;
i[345]86-*-netware*) gdb_target=i386nw
configdirs="${configdirs} nlm" ;;
i[345]86-*-osf1mk*) gdb_target=i386mk ;;
i[345]86-*-win32) gdb_target=i386win32 ;;
i[345]86-*-win32) gdb_target=win32 ;;
i960-*-bout*) gdb_target=vxworks960 ;;
i960-*-coff*) gdb_target=nindy960 ;;

643
gdb/win32-nat.c Normal file
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@ -0,0 +1,643 @@
/* Target-vector operations for controlling win32 child processes, for GDB.
Copyright 1996
Free Software Foundation, Inc.
Contributed by Cygnus Support.
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
(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
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 */
#include "defs.h"
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
#include "wait.h"
#include "gdbcore.h"
#include "command.h"
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
#include <windows.h>
#include "buildsym.h"
#include "gdb_string.h"
#include "thread.h"
#include "gdbcmd.h"
#define CHECK(x) check (x, __FILE__,__LINE__)
#define DEBUG(x) if (remote_debug) printf x
/* Forward declaration */
extern struct target_ops child_ops;
/* The most recently read context. Inspect ContextFlags to see what
bits are valid. */
static CONTEXT context;
/* The process and thread handles for the above context. */
static HANDLE current_process;
static HANDLE current_thread;
static int current_process_id;
static int current_thread_id;
/* Counts of things. */
static int exception_count = 0;
static int event_count = 0;
/* User options. */
static int new_console = 0;
static int new_group = 0;
/* This vector maps GDB's idea of a register's number into an address
in the win32 exception context vector.
It also contains the bit mask needed to load the register in question.
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
context already contains what we need, we just unpack it. Then to
write a register, first we have to ensure that the context contains
the other regs of the group, and then we copy the info in and set
out bit. */
struct regmappings
{
char *incontext;
int mask;
};
static const struct regmappings
mappings[] =
{
{(char *) &context.Eax, CONTEXT_INTEGER},
{(char *) &context.Ecx, CONTEXT_INTEGER},
{(char *) &context.Edx, CONTEXT_INTEGER},
{(char *) &context.Ebx, CONTEXT_INTEGER},
{(char *) &context.Esp, CONTEXT_CONTROL},
{(char *) &context.Ebp, CONTEXT_CONTROL},
{(char *) &context.Esi, CONTEXT_INTEGER},
{(char *) &context.Edi, CONTEXT_INTEGER},
{(char *) &context.Eip, CONTEXT_CONTROL},
{(char *) &context.EFlags, CONTEXT_CONTROL},
{(char *) &context.SegCs, CONTEXT_SEGMENTS},
{(char *) &context.SegSs, CONTEXT_SEGMENTS},
{(char *) &context.SegDs, CONTEXT_SEGMENTS},
{(char *) &context.SegEs, CONTEXT_SEGMENTS},
{(char *) &context.SegFs, CONTEXT_SEGMENTS},
{(char *) &context.SegGs, CONTEXT_SEGMENTS},
{&context.FloatSave.RegisterArea[0 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[1 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[2 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[3 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[4 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[5 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[6 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[7 * 10], CONTEXT_FLOATING_POINT},
};
/* This vector maps the target's idea of an exception (extracted
from the DEBUG_EVENT structure) to GDB's idea. */
struct xlate_exception
{
int them;
enum target_signal us;
};
static const struct xlate_exception
xlate[] =
{
{EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
{DBG_CONTROL_C, TARGET_SIGNAL_INT},
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
{-1, -1}};
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
child_fetch_inferior_registers (int r)
{
if (r < 0)
{
for (r = 0; r < NUM_REGS; r++)
child_fetch_inferior_registers (r);
}
else
{
supply_register (r, mappings[r].incontext);
}
}
static void
child_store_inferior_registers (int r)
{
if (r < 0)
{
for (r = 0; r < NUM_REGS; r++)
child_store_inferior_registers (r);
}
else
{
read_register_gen (r, mappings[r].incontext);
}
}
/* Wait for child to do something. Return pid of child, or -1 in case
of error; store status through argument pointer OURSTATUS. */
static void
handle_load_dll (DEBUG_EVENT * event)
{
DWORD dll_name_ptr;
DWORD done;
ReadProcessMemory (current_process,
(DWORD) event->u.LoadDll.lpImageName,
(char *) &dll_name_ptr,
sizeof (dll_name_ptr), &done);
/* See if we could read the address of a string, and that the
address isn't null. */
if (done == sizeof (dll_name_ptr) && dll_name_ptr)
{
char *dll_name;
int size = event->u.LoadDll.fUnicode ? sizeof (WCHAR) : sizeof (char);
int len = 0;
char b[2];
do
{
ReadProcessMemory (current_process,
dll_name_ptr + len * size,
&b,
size,
&done);
len++;
}
while ((b[0] != 0 || b[size - 1] != 0) && done == size);
dll_name = alloca (len);
if (event->u.LoadDll.fUnicode)
{
WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR));
ReadProcessMemory (current_process,
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,
dll_name_ptr,
dll_name,
len,
&done);
}
/* FIXME!! It would be nice to define one symbol which pointed to the
front of the dll if we can't find any symbols. */
context.ContextFlags = CONTEXT_FULL;
GetThreadContext (current_thread, &context);
symbol_file_add (dll_name, 0, (int) event->u.LoadDll.lpBaseOfDll, 0, 0, 0);
/* We strip off the path of the dll for tidiness. */
if (strrchr (dll_name, '\\'))
dll_name = strrchr (dll_name, '\\') + 1;
printf_unfiltered ("%x:%s\n", event->u.LoadDll.lpBaseOfDll, dll_name);
}
}
static void
handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus)
{
int i;
int done = 0;
ourstatus->kind = TARGET_WAITKIND_STOPPED;
for (i = 0; !done && xlate[i].us > 0; i++)
{
if (xlate[i].them == event->u.Exception.ExceptionRecord.ExceptionCode)
{
ourstatus->value.sig = xlate[i].us;
done = 1;
break;
}
}
if (!done)
{
printf_unfiltered ("Want to know about exception code %08x\n",
event->u.Exception.ExceptionRecord.ExceptionCode);
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
}
context.ContextFlags = CONTEXT_FULL;
GetThreadContext (current_thread, &context);
exception_count++;
}
static int
child_wait (int pid, struct target_waitstatus *ourstatus)
{
/* We loop when we get a non-standard exception rather than return
with a SPURIOUS because resume can try and step or modify things,
which needs a current_thread. But some of these exceptions mark
the birth or death of threads, which mean that the current thread
isn't necessarily what you think it is. */
while (1)
{
DEBUG_EVENT event;
BOOL t = WaitForDebugEvent (&event, INFINITE);
DEBUG (("%d = WaitForDebugEvent() code=%d pid=%d tid=%d)\n",
t,
event.dwDebugEventCode,
event.dwProcessId,
event.dwThreadId));
event_count++;
current_thread_id = event.dwThreadId;
current_process_id = event.dwProcessId;
switch (event.dwDebugEventCode)
{
case CREATE_THREAD_DEBUG_EVENT:
case EXIT_THREAD_DEBUG_EVENT:
case CREATE_PROCESS_DEBUG_EVENT:
break;
case EXIT_PROCESS_DEBUG_EVENT:
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = event.u.ExitProcess.dwExitCode;
CloseHandle (current_process);
CloseHandle (current_thread);
return current_process_id;
break;
case LOAD_DLL_DEBUG_EVENT:
handle_load_dll (&event);
break;
case EXCEPTION_DEBUG_EVENT:
handle_exception (&event, ourstatus);
return current_process_id;
default:
printf_unfiltered ("waitfor it %d %d %d %d\n", t,
event.dwDebugEventCode,
event.dwProcessId,
event.dwThreadId);
break;
}
CHECK (ContinueDebugEvent (current_process_id,
current_thread_id,
DBG_CONTINUE));
}
}
/* Attach to process PID, then initialize for debugging it. */
static void
child_attach (args, from_tty)
char *args;
int from_tty;
{
BOOL ok;
if (!args)
error_no_arg ("process-id to attach");
current_process_id = strtoul (args, 0, 0);
ok = DebugActiveProcess (current_process_id);
if (!ok)
error ("Can't attach to process.");
exception_count = 0;
event_count = 0;
if (from_tty)
{
char *exec_file = (char *) get_exec_file (0);
if (exec_file)
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
target_pid_to_str (current_process_id));
else
printf_unfiltered ("Attaching to %s\n",
target_pid_to_str (current_process_id));
gdb_flush (gdb_stdout);
}
inferior_pid = current_process_id;
push_target (&child_ops);
}
static void
child_detach (args, from_tty)
char *args;
int from_tty;
{
if (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));
gdb_flush (gdb_stdout);
}
inferior_pid = 0;
unpush_target (&child_ops);
}
/* Print status information about what we're accessing. */
static void
child_files_info (ignore)
struct target_ops *ignore;
{
printf_unfiltered ("\tUsing the running image of %s %s.\n",
attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
}
/* ARGSUSED */
static void
child_open (arg, from_tty)
char *arg;
int from_tty;
{
error ("Use the \"run\" command to start a Unix child process.");
}
/* Stub function which causes the inferior that runs it, to be ptrace-able
by its parent process. */
/* Start an inferior Unix child process and sets inferior_pid 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;
{
char *real_path;
STARTUPINFO si;
PROCESS_INFORMATION pi;
struct target_waitstatus dummy;
BOOL ret;
DWORD flags;
if (!exec_file)
{
error ("No executable specified, use `target exec'.\n");
}
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
/* A realpath is always the same size, or a bit shorter than a nice path. */
real_path = alloca (strlen (exec_file) + 1);
path_to_real_path (exec_file, real_path);
flags = DEBUG_ONLY_THIS_PROCESS | DEBUG_PROCESS;
if (new_group)
flags |= CREATE_NEW_PROCESS_GROUP;
if (new_console)
flags |= CREATE_NEW_CONSOLE;
ret = CreateProcess (real_path,
allargs,
NULL, /* Security */
NULL, /* thread */
TRUE, /* inherit handles */
flags, /* start flags */
env,
NULL, /* current directory */
&si,
&pi);
if (!ret)
error ("Error creating process %s\n", exec_file);
exception_count = 0;
event_count = 0;
inferior_pid = pi.dwProcessId;
current_process = pi.hProcess;
current_thread = pi.hThread;
current_process_id = pi.dwProcessId;
current_thread_id = pi.dwThreadId;
push_target (&child_ops);
init_thread_list ();
init_wait_for_inferior ();
clear_proceed_status ();
target_terminal_init ();
target_terminal_inferior ();
/* Ignore the first trap */
child_wait (inferior_pid, &dummy);
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
}
static void
child_mourn_inferior ()
{
unpush_target (&child_ops);
generic_mourn_inferior ();
}
/* Send a SIGINT to the process group. This acts just like the user typed a
^C on the controlling terminal. */
void
child_stop ()
{
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0));
}
int
child_xfer_memory (CORE_ADDR memaddr, char *our, int len, int write, struct target_ops *target)
{
DWORD done;
if (write)
{
WriteProcessMemory (current_process, memaddr, our, len, &done);
FlushInstructionCache (current_process, memaddr, len);
}
else
{
ReadProcessMemory (current_process, memaddr, our, len, &done);
}
return done;
}
void
child_kill_inferior (void)
{
CHECK (TerminateProcess (current_process, 0));
CHECK (CloseHandle (current_process));
CHECK (CloseHandle (current_thread));
}
void
child_resume (int pid, int step, enum target_signal signal)
{
DEBUG (("child_resume (%d, %d, %d);\n", pid, step, signal));
if (step)
{
/* Single step by setting t bit */
child_fetch_inferior_registers (PS_REGNUM);
context.EFlags |= FLAG_TRACE_BIT;
}
if (context.ContextFlags)
{
CHECK (SetThreadContext (current_thread, &context));
context.ContextFlags = 0;
}
if (signal)
{
fprintf_unfiltered (gdb_stderr, "Can't send signals to the child.\n");
}
CHECK (ContinueDebugEvent (current_process_id,
current_thread_id,
DBG_CONTINUE));
}
static void
child_prepare_to_store ()
{
/* Do nothing, since we can store individual regs */
}
static int
child_can_run ()
{
return 1;
}
static void
child_close ()
{
}
struct target_ops child_ops =
{
"child", /* to_shortname */
"Win32 child process", /* to_longname */
"Win32 child process (started by the \"run\" command).", /* to_doc */
child_open, /* to_open */
child_close, /* to_close */
child_attach, /* to_attach */
child_detach, /* to_detach */
child_resume, /* to_resume */
child_wait, /* to_wait */
child_fetch_inferior_registers,/* to_fetch_registers */
child_store_inferior_registers,/* to_store_registers */
child_prepare_to_store, /* to_child_prepare_to_store */
child_xfer_memory, /* to_xfer_memory */
child_files_info, /* to_files_info */
memory_insert_breakpoint, /* to_insert_breakpoint */
memory_remove_breakpoint, /* to_remove_breakpoint */
terminal_init_inferior, /* to_terminal_init */
terminal_inferior, /* to_terminal_inferior */
terminal_ours_for_output, /* to_terminal_ours_for_output */
terminal_ours, /* to_terminal_ours */
child_terminal_info, /* to_terminal_info */
child_kill_inferior, /* to_kill */
0, /* to_load */
0, /* to_lookup_symbol */
child_create_inferior, /* to_create_inferior */
child_mourn_inferior, /* to_mourn_inferior */
child_can_run, /* to_can_run */
0, /* to_notice_signals */
0, /* to_thread_alive */
child_stop, /* to_stop */
process_stratum, /* to_stratum */
0, /* to_next */
1, /* to_has_all_memory */
1, /* to_has_memory */
1, /* to_has_stack */
1, /* to_has_registers */
1, /* to_has_execution */
0, /* to_sections */
0, /* to_sections_end */
OPS_MAGIC /* to_magic */
};
void
_initialize_inftarg ()
{
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_target (&child_ops);
}

643
gdb/win32.c
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/* Target-vector operations for controlling win32 child processes, for GDB.
Copyright 1996
Free Software Foundation, Inc.
Contributed by Cygnus Support.
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
(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
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 */
#include "defs.h"
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
#include "wait.h"
#include "gdbcore.h"
#include "command.h"
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
#include <windows.h>
#include "buildsym.h"
#include "gdb_string.h"
#include "thread.h"
#include "gdbcmd.h"
#define CHECK(x) check (x, __FILE__,__LINE__)
#define DEBUG(x) if (remote_debug) printf x
/* Forward declaration */
extern struct target_ops child_ops;
/* The most recently read context. Inspect ContextFlags to see what
bits are valid. */
static CONTEXT context;
/* The process and thread handles for the above context. */
static HANDLE current_process;
static HANDLE current_thread;
static int current_process_id;
static int current_thread_id;
/* Counts of things. */
static int exception_count = 0;
static int event_count = 0;
/* User options. */
static int new_console = 0;
static int new_group = 0;
/* This vector maps GDB's idea of a register's number into an address
in the win32 exception context vector.
It also contains the bit mask needed to load the register in question.
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
context already contains what we need, we just unpack it. Then to
write a register, first we have to ensure that the context contains
the other regs of the group, and then we copy the info in and set
out bit. */
struct regmappings
{
char *incontext;
int mask;
};
static const struct regmappings
mappings[] =
{
{(char *) &context.Eax, CONTEXT_INTEGER},
{(char *) &context.Ecx, CONTEXT_INTEGER},
{(char *) &context.Edx, CONTEXT_INTEGER},
{(char *) &context.Ebx, CONTEXT_INTEGER},
{(char *) &context.Esp, CONTEXT_CONTROL},
{(char *) &context.Ebp, CONTEXT_CONTROL},
{(char *) &context.Esi, CONTEXT_INTEGER},
{(char *) &context.Edi, CONTEXT_INTEGER},
{(char *) &context.Eip, CONTEXT_CONTROL},
{(char *) &context.EFlags, CONTEXT_CONTROL},
{(char *) &context.SegCs, CONTEXT_SEGMENTS},
{(char *) &context.SegSs, CONTEXT_SEGMENTS},
{(char *) &context.SegDs, CONTEXT_SEGMENTS},
{(char *) &context.SegEs, CONTEXT_SEGMENTS},
{(char *) &context.SegFs, CONTEXT_SEGMENTS},
{(char *) &context.SegGs, CONTEXT_SEGMENTS},
{&context.FloatSave.RegisterArea[0 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[1 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[2 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[3 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[4 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[5 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[6 * 10], CONTEXT_FLOATING_POINT},
{&context.FloatSave.RegisterArea[7 * 10], CONTEXT_FLOATING_POINT},
};
/* This vector maps the target's idea of an exception (extracted
from the DEBUG_EVENT structure) to GDB's idea. */
struct xlate_exception
{
int them;
enum target_signal us;
};
static const struct xlate_exception
xlate[] =
{
{EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
{DBG_CONTROL_C, TARGET_SIGNAL_INT},
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
{-1, -1}};
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
child_fetch_inferior_registers (int r)
{
if (r < 0)
{
for (r = 0; r < NUM_REGS; r++)
child_fetch_inferior_registers (r);
}
else
{
supply_register (r, mappings[r].incontext);
}
}
static void
child_store_inferior_registers (int r)
{
if (r < 0)
{
for (r = 0; r < NUM_REGS; r++)
child_store_inferior_registers (r);
}
else
{
read_register_gen (r, mappings[r].incontext);
}
}
/* Wait for child to do something. Return pid of child, or -1 in case
of error; store status through argument pointer OURSTATUS. */
static void
handle_load_dll (DEBUG_EVENT * event)
{
DWORD dll_name_ptr;
DWORD done;
ReadProcessMemory (current_process,
(DWORD) event->u.LoadDll.lpImageName,
(char *) &dll_name_ptr,
sizeof (dll_name_ptr), &done);
/* See if we could read the address of a string, and that the
address isn't null. */
if (done == sizeof (dll_name_ptr) && dll_name_ptr)
{
char *dll_name;
int size = event->u.LoadDll.fUnicode ? sizeof (WCHAR) : sizeof (char);
int len = 0;
char b[2];
do
{
ReadProcessMemory (current_process,
dll_name_ptr + len * size,
&b,
size,
&done);
len++;
}
while ((b[0] != 0 || b[size - 1] != 0) && done == size);
dll_name = alloca (len);
if (event->u.LoadDll.fUnicode)
{
WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR));
ReadProcessMemory (current_process,
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,
dll_name_ptr,
dll_name,
len,
&done);
}
/* FIXME!! It would be nice to define one symbol which pointed to the
front of the dll if we can't find any symbols. */
context.ContextFlags = CONTEXT_FULL;
GetThreadContext (current_thread, &context);
symbol_file_add (dll_name, 0, (int) event->u.LoadDll.lpBaseOfDll, 0, 0, 0);
/* We strip off the path of the dll for tidiness. */
if (strrchr (dll_name, '\\'))
dll_name = strrchr (dll_name, '\\') + 1;
printf_unfiltered ("%x:%s\n", event->u.LoadDll.lpBaseOfDll, dll_name);
}
}
static void
handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus)
{
int i;
int done = 0;
ourstatus->kind = TARGET_WAITKIND_STOPPED;
for (i = 0; !done && xlate[i].us > 0; i++)
{
if (xlate[i].them == event->u.Exception.ExceptionRecord.ExceptionCode)
{
ourstatus->value.sig = xlate[i].us;
done = 1;
break;
}
}
if (!done)
{
printf_unfiltered ("Want to know about exception code %08x\n",
event->u.Exception.ExceptionRecord.ExceptionCode);
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
}
context.ContextFlags = CONTEXT_FULL;
GetThreadContext (current_thread, &context);
exception_count++;
}
static int
child_wait (int pid, struct target_waitstatus *ourstatus)
{
/* We loop when we get a non-standard exception rather than return
with a SPURIOUS because resume can try and step or modify things,
which needs a current_thread. But some of these exceptions mark
the birth or death of threads, which mean that the current thread
isn't necessarily what you think it is. */
while (1)
{
DEBUG_EVENT event;
BOOL t = WaitForDebugEvent (&event, INFINITE);
DEBUG (("%d = WaitForDebugEvent() code=%d pid=%d tid=%d)\n",
t,
event.dwDebugEventCode,
event.dwProcessId,
event.dwThreadId));
event_count++;
current_thread_id = event.dwThreadId;
current_process_id = event.dwProcessId;
switch (event.dwDebugEventCode)
{
case CREATE_THREAD_DEBUG_EVENT:
case EXIT_THREAD_DEBUG_EVENT:
case CREATE_PROCESS_DEBUG_EVENT:
break;
case EXIT_PROCESS_DEBUG_EVENT:
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = event.u.ExitProcess.dwExitCode;
CloseHandle (current_process);
CloseHandle (current_thread);
return current_process_id;
break;
case LOAD_DLL_DEBUG_EVENT:
handle_load_dll (&event);
break;
case EXCEPTION_DEBUG_EVENT:
handle_exception (&event, ourstatus);
return current_process_id;
default:
printf_unfiltered ("waitfor it %d %d %d %d\n", t,
event.dwDebugEventCode,
event.dwProcessId,
event.dwThreadId);
break;
}
CHECK (ContinueDebugEvent (current_process_id,
current_thread_id,
DBG_CONTINUE));
}
}
/* Attach to process PID, then initialize for debugging it. */
static void
child_attach (args, from_tty)
char *args;
int from_tty;
{
BOOL ok;
if (!args)
error_no_arg ("process-id to attach");
current_process_id = strtoul (args, 0, 0);
ok = DebugActiveProcess (current_process_id);
if (!ok)
error ("Can't attach to process.");
exception_count = 0;
event_count = 0;
if (from_tty)
{
char *exec_file = (char *) get_exec_file (0);
if (exec_file)
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
target_pid_to_str (current_process_id));
else
printf_unfiltered ("Attaching to %s\n",
target_pid_to_str (current_process_id));
gdb_flush (gdb_stdout);
}
inferior_pid = current_process_id;
push_target (&child_ops);
}
static void
child_detach (args, from_tty)
char *args;
int from_tty;
{
if (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));
gdb_flush (gdb_stdout);
}
inferior_pid = 0;
unpush_target (&child_ops);
}
/* Print status information about what we're accessing. */
static void
child_files_info (ignore)
struct target_ops *ignore;
{
printf_unfiltered ("\tUsing the running image of %s %s.\n",
attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
}
/* ARGSUSED */
static void
child_open (arg, from_tty)
char *arg;
int from_tty;
{
error ("Use the \"run\" command to start a Unix child process.");
}
/* Stub function which causes the inferior that runs it, to be ptrace-able
by its parent process. */
/* Start an inferior Unix child process and sets inferior_pid 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;
{
char *real_path;
STARTUPINFO si;
PROCESS_INFORMATION pi;
struct target_waitstatus dummy;
BOOL ret;
DWORD flags;
if (!exec_file)
{
error ("No executable specified, use `target exec'.\n");
}
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
/* A realpath is always the same size, or a bit shorter than a nice path. */
real_path = alloca (strlen (exec_file) + 1);
path_to_real_path (exec_file, real_path);
flags = DEBUG_ONLY_THIS_PROCESS | DEBUG_PROCESS;
if (new_group)
flags |= CREATE_NEW_PROCESS_GROUP;
if (new_console)
flags |= CREATE_NEW_CONSOLE;
ret = CreateProcess (real_path,
allargs,
NULL, /* Security */
NULL, /* thread */
TRUE, /* inherit handles */
flags, /* start flags */
env,
NULL, /* current directory */
&si,
&pi);
if (!ret)
error ("Error creating process %s\n", exec_file);
exception_count = 0;
event_count = 0;
inferior_pid = pi.dwProcessId;
current_process = pi.hProcess;
current_thread = pi.hThread;
current_process_id = pi.dwProcessId;
current_thread_id = pi.dwThreadId;
push_target (&child_ops);
init_thread_list ();
init_wait_for_inferior ();
clear_proceed_status ();
target_terminal_init ();
target_terminal_inferior ();
/* Ignore the first trap */
child_wait (inferior_pid, &dummy);
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
}
static void
child_mourn_inferior ()
{
unpush_target (&child_ops);
generic_mourn_inferior ();
}
/* Send a SIGINT to the process group. This acts just like the user typed a
^C on the controlling terminal. */
void
child_stop ()
{
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0));
}
int
child_xfer_memory (CORE_ADDR memaddr, char *our, int len, int write, struct target_ops *target)
{
DWORD done;
if (write)
{
WriteProcessMemory (current_process, memaddr, our, len, &done);
FlushInstructionCache (current_process, memaddr, len);
}
else
{
ReadProcessMemory (current_process, memaddr, our, len, &done);
}
return done;
}
void
child_kill_inferior (void)
{
CHECK (TerminateProcess (current_process, 0));
CHECK (CloseHandle (current_process));
CHECK (CloseHandle (current_thread));
}
void
child_resume (int pid, int step, enum target_signal signal)
{
DEBUG (("child_resume (%d, %d, %d);\n", pid, step, signal));
if (step)
{
/* Single step by setting t bit */
child_fetch_inferior_registers (PS_REGNUM);
context.EFlags |= FLAG_TRACE_BIT;
}
if (context.ContextFlags)
{
CHECK (SetThreadContext (current_thread, &context));
context.ContextFlags = 0;
}
if (signal)
{
fprintf_unfiltered (gdb_stderr, "Can't send signals to the child.\n");
}
CHECK (ContinueDebugEvent (current_process_id,
current_thread_id,
DBG_CONTINUE));
}
static void
child_prepare_to_store ()
{
/* Do nothing, since we can store individual regs */
}
static int
child_can_run ()
{
return 1;
}
static void
child_close ()
{
}
struct target_ops child_ops =
{
"child", /* to_shortname */
"Win32 child process", /* to_longname */
"Win32 child process (started by the \"run\" command).", /* to_doc */
child_open, /* to_open */
child_close, /* to_close */
child_attach, /* to_attach */
child_detach, /* to_detach */
child_resume, /* to_resume */
child_wait, /* to_wait */
child_fetch_inferior_registers,/* to_fetch_registers */
child_store_inferior_registers,/* to_store_registers */
child_prepare_to_store, /* to_child_prepare_to_store */
child_xfer_memory, /* to_xfer_memory */
child_files_info, /* to_files_info */
memory_insert_breakpoint, /* to_insert_breakpoint */
memory_remove_breakpoint, /* to_remove_breakpoint */
terminal_init_inferior, /* to_terminal_init */
terminal_inferior, /* to_terminal_inferior */
terminal_ours_for_output, /* to_terminal_ours_for_output */
terminal_ours, /* to_terminal_ours */
child_terminal_info, /* to_terminal_info */
child_kill_inferior, /* to_kill */
0, /* to_load */
0, /* to_lookup_symbol */
child_create_inferior, /* to_create_inferior */
child_mourn_inferior, /* to_mourn_inferior */
child_can_run, /* to_can_run */
0, /* to_notice_signals */
0, /* to_thread_alive */
child_stop, /* to_stop */
process_stratum, /* to_stratum */
0, /* to_next */
1, /* to_has_all_memory */
1, /* to_has_memory */
1, /* to_has_stack */
1, /* to_has_registers */
1, /* to_has_execution */
0, /* to_sections */
0, /* to_sections_end */
OPS_MAGIC /* to_magic */
};
void
_initialize_inftarg ()
{
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_target (&child_ops);
}