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target-or32: Add exception support 

Add OpenRISC exception support.

Signed-off-by: Jia Liu <proljc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Jia Liu 2012-07-20 15:50:42 +08:00 committed by Blue Swirl
parent b6a71ef7e0
commit 1d7d403469
5 changed files with 89 additions and 2 deletions
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4
target-openrisc/Makefile.objs
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@ -1,3 +1,3 @@
obj-$(CONFIG_SOFTMMU) += machine.o
obj-y += cpu.o interrupt.o mmu.o translate.o
obj-y += interrupt_helper.o mmu_helper.o
obj-y += cpu.o exception.o interrupt.o mmu.o translate.o
obj-y += exception_helper.o interrupt_helper.o mmu_helper.o

27
target-openrisc/exception.c Normal file
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@ -0,0 +1,27 @@
/*
* OpenRISC exception.
*
* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
#include "exception.h"
void QEMU_NORETURN raise_exception(OpenRISCCPU *cpu, uint32_t excp)
{
cpu->env.exception_index = excp;
cpu_loop_exit(&cpu->env);
}

28
target-openrisc/exception.h Normal file
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@ -0,0 +1,28 @@
/*
* OpenRISC exception header.
*
* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QEMU_OPENRISC_EXCP_H
#define QEMU_OPENRISC_EXCP_H
#include "cpu.h"
#include "qemu-common.h"
void QEMU_NORETURN raise_exception(OpenRISCCPU *cpu, uint32_t excp);
#endif /* QEMU_OPENRISC_EXCP_H */

29
target-openrisc/exception_helper.c Normal file
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@ -0,0 +1,29 @@
/*
* OpenRISC exception helper routines
*
* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
#include "helper.h"
#include "exception.h"
void HELPER(exception)(CPUOpenRISCState *env, uint32_t excp)
{
OpenRISCCPU *cpu = OPENRISC_CPU(ENV_GET_CPU(env));
raise_exception(cpu, excp);
}

3
target-openrisc/helper.h
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@ -19,6 +19,9 @@
#include "def-helper.h"
/* exception */
DEF_HELPER_FLAGS_2(exception, 0, void, env, i32)
/* interrupt */
DEF_HELPER_FLAGS_1(rfe, 0, void, env)