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6df01ab8ab
The defs.h header will take care of including the various config.h headers. For now, it's just config.h, but we'll add more when we integrate gnulib in. This header should be used instead of config.h, and should be the first include in every .c file. We won't rely on the old behavior where we expected files to include the port's sim-main.h which then includes the common sim-basics.h which then includes config.h. We have a ton of code that includes things before sim-main.h, and it sometimes needs to be that way. Creating a dedicated header avoids the ordering mess and implicit inclusion that shows up otherwise.
135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/* err.c --- handle errors for RX simulator.
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Copyright (C) 2008-2021 Free Software Foundation, Inc.
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Contributed by Red Hat, Inc.
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This file is part of the GNU simulators.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This must come before any other includes. */
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#include "defs.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "err.h"
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static unsigned char ee_actions[SIM_ERR_NUM_ERRORS];
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static enum execution_error last_error;
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static void
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ee_overrides (void)
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{
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/* GCC may initialize a bitfield by reading the uninitialized byte,
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masking in the bitfield, and writing the byte back out. */
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ee_actions[SIM_ERR_READ_UNWRITTEN_BYTES] = SIM_ERRACTION_IGNORE;
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/* This breaks stack unwinding for exceptions because it leaves
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MC_PUSHED_PC tags in the unwound stack frames. */
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ee_actions[SIM_ERR_CORRUPT_STACK] = SIM_ERRACTION_IGNORE;
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}
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void
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execution_error_init_standalone (void)
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{
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int i;
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for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
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ee_actions[i] = SIM_ERRACTION_EXIT;
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ee_overrides ();
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}
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void
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execution_error_init_debugger (void)
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{
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int i;
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for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
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ee_actions[i] = SIM_ERRACTION_DEBUG;
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ee_overrides ();
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}
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void
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execution_error_warn_all (void)
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{
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int i;
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for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
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ee_actions[i] = SIM_ERRACTION_WARN;
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}
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void
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execution_error_ignore_all (void)
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{
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int i;
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for (i = 0; i < SIM_ERR_NUM_ERRORS; i++)
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ee_actions[i] = SIM_ERRACTION_IGNORE;
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}
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void
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execution_error (enum execution_error num, unsigned long address)
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{
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if (ee_actions[num] != SIM_ERRACTION_IGNORE)
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last_error = num;
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if (ee_actions[num] == SIM_ERRACTION_EXIT
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|| ee_actions[num] == SIM_ERRACTION_WARN)
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{
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switch (num)
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{
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case SIM_ERR_READ_UNWRITTEN_PAGES:
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case SIM_ERR_READ_UNWRITTEN_BYTES:
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printf("Read from unwritten memory at 0x%lx\n", address);
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break;
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case SIM_ERR_NULL_POINTER_DEREFERENCE:
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printf ("NULL pointer dereference\n");
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break;
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case SIM_ERR_CORRUPT_STACK:
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printf ("Stack corruption detected at 0x%lx\n", address);
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break;
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default:
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printf ("Unknown execution error %d\n", num);
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exit (1);
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}
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}
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if (ee_actions[num] == SIM_ERRACTION_EXIT)
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exit (1);
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}
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enum execution_error
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execution_error_get_last_error (void)
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{
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return last_error;
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}
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void
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execution_error_clear_last_error (void)
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{
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last_error = SIM_ERR_NONE;
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}
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void
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execution_error_set_action (enum execution_error num, enum execution_error_action act)
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{
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ee_actions[num] = act;
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}
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