mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/* err.c --- handle errors for RX simulator.
|
|
|
|
Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
|
|
Contributed by Red Hat, Inc.
|
|
|
|
This file is part of the GNU simulators.
|
|
|
|
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 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 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "err.h"
|
|
|
|
static unsigned char ee_actions[SIM_ERR_NUM_ERRORS];
|
|
|
|
static enum execution_error last_error;
|
|
|
|
static void
|
|
ee_overrides ()
|
|
{
|
|
/* GCC may initialize a bitfield by reading the uninitialized byte,
|
|
masking in the bitfield, and writing the byte back out. */
|
|
ee_actions[SIM_ERR_READ_UNWRITTEN_BYTES] = SIM_ERRACTION_IGNORE;
|
|
/* This breaks stack unwinding for exceptions because it leaves
|
|
MC_PUSHED_PC tags in the unwound stack frames. */
|
|
ee_actions[SIM_ERR_CORRUPT_STACK] = SIM_ERRACTION_IGNORE;
|
|
}
|
|
|
|
void
|
|
execution_error_init_standalone (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
|
|
ee_actions[i] = SIM_ERRACTION_EXIT;
|
|
|
|
ee_overrides ();
|
|
}
|
|
|
|
void
|
|
execution_error_init_debugger (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
|
|
ee_actions[i] = SIM_ERRACTION_DEBUG;
|
|
|
|
ee_overrides ();
|
|
}
|
|
|
|
void
|
|
execution_error_exit_all (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
|
|
ee_actions[i] = SIM_ERRACTION_EXIT;
|
|
}
|
|
|
|
void
|
|
execution_error_warn_all (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
|
|
ee_actions[i] = SIM_ERRACTION_WARN;
|
|
}
|
|
|
|
void
|
|
execution_error_ignore_all (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
|
|
ee_actions[i] = SIM_ERRACTION_IGNORE;
|
|
}
|
|
|
|
void
|
|
execution_error (enum execution_error num, unsigned long address)
|
|
{
|
|
if (ee_actions[num] != SIM_ERRACTION_IGNORE)
|
|
last_error = num;
|
|
|
|
if (ee_actions[num] == SIM_ERRACTION_EXIT
|
|
|| ee_actions[num] == SIM_ERRACTION_WARN)
|
|
{
|
|
switch (num)
|
|
{
|
|
case SIM_ERR_READ_UNWRITTEN_PAGES:
|
|
case SIM_ERR_READ_UNWRITTEN_BYTES:
|
|
printf("Read from unwritten memory at 0x%lx\n", address);
|
|
break;
|
|
|
|
case SIM_ERR_NULL_POINTER_DEREFERENCE:
|
|
printf ("NULL pointer dereference\n");
|
|
break;
|
|
|
|
case SIM_ERR_CORRUPT_STACK:
|
|
printf ("Stack corruption detected at 0x%lx\n", address);
|
|
break;
|
|
|
|
default:
|
|
printf ("Unknown execution error %d\n", num);
|
|
exit (1);
|
|
}
|
|
}
|
|
|
|
if (ee_actions[num] == SIM_ERRACTION_EXIT)
|
|
exit (1);
|
|
}
|
|
|
|
enum execution_error
|
|
execution_error_get_last_error (void)
|
|
{
|
|
return last_error;
|
|
}
|
|
|
|
void
|
|
execution_error_clear_last_error (void)
|
|
{
|
|
last_error = SIM_ERR_NONE;
|
|
}
|
|
|
|
void
|
|
execution_error_set_action (enum execution_error num, enum execution_error_action act)
|
|
{
|
|
ee_actions[num] = act;
|
|
}
|