xqemu/target-tricore/op_helper.c

/*
 *  Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
 *
 * 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 <stdlib.h>
#include "cpu.h"
#include "qemu/host-utils.h"
#include "exec/helper-proto.h"
#include "exec/cpu_ldst.h"

static inline void QEMU_NORETURN do_raise_exception_err(CPUTriCoreState *env,
                                                        uint32_t exception,
                                                        int error_code,
                                                        uintptr_t pc)
{
    CPUState *cs = CPU(tricore_env_get_cpu(env));
    cs->exception_index = exception;
    env->error_code = error_code;

    if (pc) {
        /* now we have a real cpu fault */
        cpu_restore_state(cs, pc);
    }

    cpu_loop_exit(cs);
}

static inline void QEMU_NORETURN do_raise_exception(CPUTriCoreState *env,
                                                    uint32_t exception,
                                                    uintptr_t pc)
{
    do_raise_exception_err(env, exception, 0, pc);
}

void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
              uintptr_t retaddr)
{
    int ret;
    ret = cpu_tricore_handle_mmu_fault(cs, addr, is_write, mmu_idx);
    if (ret) {
        TriCoreCPU *cpu = TRICORE_CPU(cs);
        CPUTriCoreState *env = &cpu->env;
        do_raise_exception_err(env, cs->exception_index,
                               env->error_code, retaddr);
    }
}