Archipelago » qemu

/*

 * m68k 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 m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    M68kCPU *cpu = M68K_CPU(cs);

    CPUM68KState *env = &cpu->env;

    if (n < 8) {

        /* D0-D7 */

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

    } else if (n < 16) {

        /* A0-A7 */

        return gdb_get_reg32(mem_buf, env->aregs[n - 8]);

    } else {

        switch (n) {

        case 16:

            return gdb_get_reg32(mem_buf, env->sr);

        case 17:

            return gdb_get_reg32(mem_buf, env->pc);

        }

    }

    /* FP registers not included here because they vary between

       ColdFire and m68k.  Use XML bits for these.  */

    return 0;

}

int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    M68kCPU *cpu = M68K_CPU(cs);

    CPUM68KState *env = &cpu->env;

    uint32_t tmp;

    tmp = ldl_p(mem_buf);

    if (n < 8) {

        /* D0-D7 */

        env->dregs[n] = tmp;

    } else if (n < 16) {

        /* A0-A7 */

        env->aregs[n - 8] = tmp;

    } else {

        switch (n) {

        case 16:

            env->sr = tmp;

            break;

        case 17:

            env->pc = tmp;

            break;

        default:

            return 0;

        }

    }

    return 4;

}