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2002-02-05 Pierre Muller <muller@ics.u-strasbg.fr>

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win32-nat.c (last_sig): Changed type of variable to target_signal,
	to allow easier handling of pass state.
	(DEBUG_EXCEPTION_SIMPLE): New macro, used in handle_exception,
	that gives exception name and address.
	(handle_exception): Use DEBUG_EXCEPTION_SIMPLE macro
	and set last_sig value to ourstatus->value.sig. Some missing
	exceptions added.
	(child_continue): Correctly report continue_status.
	(get_child_debug_event,do_initial_child_stuff): Set last_sig to
	TARGET_SIGNAL_0 (new default value).
	(child_resume): consider sig argument passed to decide if
	the exception should be passed to debuggee or not.
This commit is contained in:
Pierre Muller 2002-02-06 09:14:50 +00:00
parent 6b32719e57
commit 7393af7c90
3 changed files with 229 additions and 72 deletions
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15
gdb/ChangeLog
View File

@ -1,3 +1,18 @@
2002-02-05 Pierre Muller <muller@ics.u-strasbg.fr>
win32-nat.c (last_sig): Changed type of variable to target_signal,
to allow easier handling of pass state.
(DEBUG_EXCEPTION_SIMPLE): New macro, used in handle_exception,
that gives exception name and address.
(handle_exception): Use DEBUG_EXCEPTION_SIMPLE macro
and set last_sig value to ourstatus->value.sig. Some missing
exceptions added.
(child_continue): Correctly report continue_status.
(get_child_debug_event,do_initial_child_stuff): Set last_sig to
TARGET_SIGNAL_0 (new default value).
(child_resume): consider sig argument passed to decide if
the exception should be passed to debuggee or not.
2002-02-05 Michael Snyder <msnyder@redhat.com>
* regcache.c (fetch_register): Call target_fetch_register

143
gdb/win32-nat.c
View File

@ -98,8 +98,9 @@ static void child_stop (void);
static int win32_child_thread_alive (ptid_t);
void child_kill_inferior (void);
static int last_sig = 0; /* Set if a signal was received from the
debugged process */
static enum target_signal last_sig = TARGET_SIGNAL_0;
/* Set if a signal was received from the debugged process */
/* Thread information structure used to track information that is
not available in gdb's thread structure. */
typedef struct thread_info_struct
@ -218,6 +219,7 @@ static const struct xlate_exception
{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
{DBG_CONTROL_C, TARGET_SIGNAL_INT},
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
{STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
{-1, -1}};
static void
@ -823,6 +825,10 @@ handle_output_debug_string (struct target_waitstatus *ourstatus)
return gotasig;
}
#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
printf ("gdb: Target exception %s at 0x%08lx\n", x, \
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
static int
handle_exception (struct target_waitstatus *ourstatus)
{
@ -837,52 +843,80 @@ handle_exception (struct target_waitstatus *ourstatus)
switch (code)
{
case EXCEPTION_ACCESS_VIOLATION:
DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
last_sig = SIGSEGV;
break;
case STATUS_FLOAT_UNDERFLOW:
case STATUS_FLOAT_DIVIDE_BY_ZERO:
case STATUS_FLOAT_OVERFLOW:
case STATUS_INTEGER_DIVIDE_BY_ZERO:
DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_FPE;
last_sig = SIGFPE;
break;
case STATUS_STACK_OVERFLOW:
DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
break;
case STATUS_FLOAT_DENORMAL_OPERAND:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_INEXACT_RESULT:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_INVALID_OPERATION:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_STACK_CHECK:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_UNDERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_DIVIDE_BY_ZERO:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_INTEGER_DIVIDE_BY_ZERO:
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_INTEGER_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case DBG_CONTROL_C:
DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
ourstatus->value.sig = TARGET_SIGNAL_INT;
last_sig = SIGINT; /* FIXME - should check pass state */
break;
case DBG_CONTROL_BREAK:
DEBUG_EXCEPT (("gdb: Target exception CONTROL_BREAK at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
ourstatus->value.sig = TARGET_SIGNAL_INT;
last_sig = SIGINT; /* FIXME - should check pass state */
break;
case EXCEPTION_SINGLE_STEP:
DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
ourstatus->value.sig = TARGET_SIGNAL_ILL;
break;
case EXCEPTION_PRIV_INSTRUCTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
ourstatus->value.sig = TARGET_SIGNAL_ILL;
break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
ourstatus->value.sig = TARGET_SIGNAL_ILL;
last_sig = SIGILL;
break;
default:
if (current_event.u.Exception.dwFirstChance)
@ -894,6 +928,7 @@ handle_exception (struct target_waitstatus *ourstatus)
break;
}
exception_count++;
last_sig = ourstatus->value.sig;
return 1;
}
@ -906,8 +941,10 @@ child_continue (DWORD continue_status, int id)
thread_info *th;
BOOL res;
DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n",
current_event.dwProcessId, current_event.dwThreadId));
DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
current_event.dwProcessId, current_event.dwThreadId,
continue_status == DBG_CONTINUE ?
"DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
res = ContinueDebugEvent (current_event.dwProcessId,
current_event.dwThreadId,
continue_status);
@ -952,7 +989,7 @@ get_child_debug_event (int pid, struct target_waitstatus *ourstatus)
static thread_info dummy_thread_info;
int retval = 0;
last_sig = 0;
last_sig = TARGET_SIGNAL_0;
if (!(debug_event = WaitForDebugEvent (&current_event, 1000)))
goto out;
@ -1118,7 +1155,7 @@ do_initial_child_stuff (DWORD pid)
extern int stop_after_trap;
int i;
last_sig = 0;
last_sig = TARGET_SIGNAL_0;
event_count = 0;
exception_count = 0;
debug_registers_changed = 0;
@ -1470,11 +1507,45 @@ void
child_resume (ptid_t ptid, int step, enum target_signal sig)
{
thread_info *th;
DWORD continue_status = last_sig > 0 && last_sig < NSIG ?
DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
DWORD continue_status = DBG_CONTINUE;
int pid = PIDGET (ptid);
last_sig = 0;
if (sig != TARGET_SIGNAL_0)
{
if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
}
else if (sig == last_sig)
continue_status = DBG_EXCEPTION_NOT_HANDLED;
else
#if 0
/* This code does not seem to work, because
the kernel does probably not consider changes in the ExceptionRecord
structure when passing the exception to the inferior.
Note that this seems possible in the exception handler itself. */
{
int i;
for (i = 0; xlate[i].them != -1; i++)
if (xlate[i].us == sig)
{
current_event.u.Exception.ExceptionRecord.ExceptionCode =
xlate[i].them;
continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
}
if (continue_status == DBG_CONTINUE)
{
DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
}
}
#endif
DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
last_sig));
}
last_sig = TARGET_SIGNAL_0;
DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
pid, step, sig));

143
gdb/windows-nat.c
View File

@ -98,8 +98,9 @@ static void child_stop (void);
static int win32_child_thread_alive (ptid_t);
void child_kill_inferior (void);
static int last_sig = 0; /* Set if a signal was received from the
debugged process */
static enum target_signal last_sig = TARGET_SIGNAL_0;
/* Set if a signal was received from the debugged process */
/* Thread information structure used to track information that is
not available in gdb's thread structure. */
typedef struct thread_info_struct
@ -218,6 +219,7 @@ static const struct xlate_exception
{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
{DBG_CONTROL_C, TARGET_SIGNAL_INT},
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
{STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
{-1, -1}};
static void
@ -823,6 +825,10 @@ handle_output_debug_string (struct target_waitstatus *ourstatus)
return gotasig;
}
#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
printf ("gdb: Target exception %s at 0x%08lx\n", x, \
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
static int
handle_exception (struct target_waitstatus *ourstatus)
{
@ -837,52 +843,80 @@ handle_exception (struct target_waitstatus *ourstatus)
switch (code)
{
case EXCEPTION_ACCESS_VIOLATION:
DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
last_sig = SIGSEGV;
break;
case STATUS_FLOAT_UNDERFLOW:
case STATUS_FLOAT_DIVIDE_BY_ZERO:
case STATUS_FLOAT_OVERFLOW:
case STATUS_INTEGER_DIVIDE_BY_ZERO:
DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_FPE;
last_sig = SIGFPE;
break;
case STATUS_STACK_OVERFLOW:
DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
break;
case STATUS_FLOAT_DENORMAL_OPERAND:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_INEXACT_RESULT:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_INVALID_OPERATION:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_STACK_CHECK:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_UNDERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_DIVIDE_BY_ZERO:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_INTEGER_DIVIDE_BY_ZERO:
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_INTEGER_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case DBG_CONTROL_C:
DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
ourstatus->value.sig = TARGET_SIGNAL_INT;
last_sig = SIGINT; /* FIXME - should check pass state */
break;
case DBG_CONTROL_BREAK:
DEBUG_EXCEPT (("gdb: Target exception CONTROL_BREAK at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
ourstatus->value.sig = TARGET_SIGNAL_INT;
last_sig = SIGINT; /* FIXME - should check pass state */
break;
case EXCEPTION_SINGLE_STEP:
DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
DEBUG_EXCEPT (("gdb: Target exception SINGLE_ILL at 0x%08lx\n",
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress));
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
ourstatus->value.sig = TARGET_SIGNAL_ILL;
break;
case EXCEPTION_PRIV_INSTRUCTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
ourstatus->value.sig = TARGET_SIGNAL_ILL;
break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
ourstatus->value.sig = TARGET_SIGNAL_ILL;
last_sig = SIGILL;
break;
default:
if (current_event.u.Exception.dwFirstChance)
@ -894,6 +928,7 @@ handle_exception (struct target_waitstatus *ourstatus)
break;
}
exception_count++;
last_sig = ourstatus->value.sig;
return 1;
}
@ -906,8 +941,10 @@ child_continue (DWORD continue_status, int id)
thread_info *th;
BOOL res;
DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, DBG_CONTINUE);\n",
current_event.dwProcessId, current_event.dwThreadId));
DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
current_event.dwProcessId, current_event.dwThreadId,
continue_status == DBG_CONTINUE ?
"DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
res = ContinueDebugEvent (current_event.dwProcessId,
current_event.dwThreadId,
continue_status);
@ -952,7 +989,7 @@ get_child_debug_event (int pid, struct target_waitstatus *ourstatus)
static thread_info dummy_thread_info;
int retval = 0;
last_sig = 0;
last_sig = TARGET_SIGNAL_0;
if (!(debug_event = WaitForDebugEvent (&current_event, 1000)))
goto out;
@ -1118,7 +1155,7 @@ do_initial_child_stuff (DWORD pid)
extern int stop_after_trap;
int i;
last_sig = 0;
last_sig = TARGET_SIGNAL_0;
event_count = 0;
exception_count = 0;
debug_registers_changed = 0;
@ -1470,11 +1507,45 @@ void
child_resume (ptid_t ptid, int step, enum target_signal sig)
{
thread_info *th;
DWORD continue_status = last_sig > 0 && last_sig < NSIG ?
DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
DWORD continue_status = DBG_CONTINUE;
int pid = PIDGET (ptid);
last_sig = 0;
if (sig != TARGET_SIGNAL_0)
{
if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
}
else if (sig == last_sig)
continue_status = DBG_EXCEPTION_NOT_HANDLED;
else
#if 0
/* This code does not seem to work, because
the kernel does probably not consider changes in the ExceptionRecord
structure when passing the exception to the inferior.
Note that this seems possible in the exception handler itself. */
{
int i;
for (i = 0; xlate[i].them != -1; i++)
if (xlate[i].us == sig)
{
current_event.u.Exception.ExceptionRecord.ExceptionCode =
xlate[i].them;
continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
}
if (continue_status == DBG_CONTINUE)
{
DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
}
}
#endif
DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
last_sig));
}
last_sig = TARGET_SIGNAL_0;
DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
pid, step, sig));