Archipelago » qemu

/*

 *  S/390 helpers

 *

 *  Copyright (c) 2009 Ulrich Hecht

 *

 * 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 <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "cpu.h"

#include "exec-all.h"

#include "gdbstub.h"

#include "qemu-common.h"

#include <linux/kvm.h>

#include "kvm.h"

CPUS390XState *cpu_s390x_init(const char *cpu_model)

{

    CPUS390XState *env;

    static int inited = 0;

    env = qemu_mallocz(sizeof(CPUS390XState));

    cpu_exec_init(env);

    if (!inited) {

        inited = 1;

    }

    env->cpu_model_str = cpu_model;

    cpu_reset(env);

    qemu_init_vcpu(env);

    return env;

}

void cpu_reset(CPUS390XState *env)

{

    if (qemu_loglevel_mask(CPU_LOG_RESET)) {

        qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);

        log_cpu_state(env, 0);

    }

    memset(env, 0, offsetof(CPUS390XState, breakpoints));

    /* FIXME: reset vector? */

    tlb_flush(env, 1);

}

target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)

{

    return 0;

}

#ifndef CONFIG_USER_ONLY

int cpu_s390x_handle_mmu_fault (CPUState *env, target_ulong address, int rw,

                                int mmu_idx, int is_softmmu)

{

    target_ulong phys;

    int prot;

    /* XXX: implement mmu */

    phys = address;

    prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;

    tlb_set_page(env, address & TARGET_PAGE_MASK,

                 phys & TARGET_PAGE_MASK, prot,

                 mmu_idx, TARGET_PAGE_SIZE);

    return 0;

}

#endif /* CONFIG_USER_ONLY */