Archipelago » qemu

/*

 * Alpha 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 alpha_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    AlphaCPU *cpu = ALPHA_CPU(cs);

    CPUAlphaState *env = &cpu->env;

    uint64_t val;

    CPU_DoubleU d;

    switch (n) {

    case 0 ... 30:

        val = env->ir[n];

        break;

    case 32 ... 62:

        d.d = env->fir[n - 32];

        val = d.ll;

        break;

    case 63:

        val = cpu_alpha_load_fpcr(env);

        break;

    case 64:

        val = env->pc;

        break;

    case 66:

        val = env->unique;

        break;

    case 31:

    case 65:

        /* 31 really is the zero register; 65 is unassigned in the

           gdb protocol, but is still required to occupy 8 bytes. */

        val = 0;

        break;

    default:

        return 0;

    }

    return gdb_get_regl(mem_buf, val);

}

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

{

    AlphaCPU *cpu = ALPHA_CPU(cs);

    CPUAlphaState *env = &cpu->env;

    target_ulong tmp = ldtul_p(mem_buf);

    CPU_DoubleU d;

    switch (n) {

    case 0 ... 30:

        env->ir[n] = tmp;

        break;

    case 32 ... 62:

        d.ll = tmp;

        env->fir[n - 32] = d.d;

        break;

    case 63:

        cpu_alpha_store_fpcr(env, tmp);

        break;

    case 64:

        env->pc = tmp;

        break;

    case 66:

        env->unique = tmp;

        break;

    case 31:

    case 65:

        /* 31 really is the zero register; 65 is unassigned in the

           gdb protocol, but is still required to occupy 8 bytes. */

        break;

    default:

        return 0;

    }

    return 8;

}