Archipelago » qemu

/*

 * OpenRISC gdb server stub

 *

 * Copyright (c) 2003-2005 Fabrice Bellard

 * Copyright (c) 2013 SUSE LINUX Products GmbH

 *

 * 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 "config.h"

#include "qemu-common.h"

#include "exec/gdbstub.h"

int openrisc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    OpenRISCCPU *cpu = OPENRISC_CPU(cs);

    CPUOpenRISCState *env = &cpu->env;

    if (n < 32) {

        return gdb_get_reg32(mem_buf, env->gpr[n]);

    } else {

        switch (n) {

        case 32:    /* PPC */

            return gdb_get_reg32(mem_buf, env->ppc);

        case 33:    /* NPC */

            return gdb_get_reg32(mem_buf, env->npc);

        case 34:    /* SR */

            return gdb_get_reg32(mem_buf, env->sr);

        default:

            break;

        }

    }

    return 0;

}

int openrisc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    OpenRISCCPU *cpu = OPENRISC_CPU(cs);

    CPUClass *cc = CPU_GET_CLASS(cs);

    CPUOpenRISCState *env = &cpu->env;

    uint32_t tmp;

    if (n > cc->gdb_num_core_regs) {

        return 0;

    }

    tmp = ldl_p(mem_buf);

    if (n < 32) {

        env->gpr[n] = tmp;

    } else {

        switch (n) {

        case 32: /* PPC */

            env->ppc = tmp;

            break;

        case 33: /* NPC */

            env->npc = tmp;

            break;

        case 34: /* SR */

            env->sr = tmp;

            break;

        default:

            break;

        }

    }

    return 4;

}