Archipelago » qemu

/*

 * SuperH 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"

/* Hint: Use "set architecture sh4" in GDB to see fpu registers */

/* FIXME: We should use XML for this.  */

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

{

    SuperHCPU *cpu = SUPERH_CPU(cs);

    CPUSH4State *env = &cpu->env;

    switch (n) {

    case 0 ... 7:

        if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) {

            return gdb_get_regl(mem_buf, env->gregs[n + 16]);

        } else {

            return gdb_get_regl(mem_buf, env->gregs[n]);

        }

    case 8 ... 15:

        return gdb_get_regl(mem_buf, env->gregs[n]);

    case 16:

        return gdb_get_regl(mem_buf, env->pc);

    case 17:

        return gdb_get_regl(mem_buf, env->pr);

    case 18:

        return gdb_get_regl(mem_buf, env->gbr);

    case 19:

        return gdb_get_regl(mem_buf, env->vbr);

    case 20:

        return gdb_get_regl(mem_buf, env->mach);

    case 21:

        return gdb_get_regl(mem_buf, env->macl);

    case 22:

        return gdb_get_regl(mem_buf, env->sr);

    case 23:

        return gdb_get_regl(mem_buf, env->fpul);

    case 24:

        return gdb_get_regl(mem_buf, env->fpscr);

    case 25 ... 40:

        if (env->fpscr & FPSCR_FR) {

            stfl_p(mem_buf, env->fregs[n - 9]);

        } else {

            stfl_p(mem_buf, env->fregs[n - 25]);

        }

        return 4;

    case 41:

        return gdb_get_regl(mem_buf, env->ssr);

    case 42:

        return gdb_get_regl(mem_buf, env->spc);

    case 43 ... 50:

        return gdb_get_regl(mem_buf, env->gregs[n - 43]);

    case 51 ... 58:

        return gdb_get_regl(mem_buf, env->gregs[n - (51 - 16)]);

    }

    return 0;

}

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

{

    SuperHCPU *cpu = SUPERH_CPU(cs);

    CPUSH4State *env = &cpu->env;

    switch (n) {

    case 0 ... 7:

        if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) {

            env->gregs[n + 16] = ldl_p(mem_buf);

        } else {

            env->gregs[n] = ldl_p(mem_buf);

        }

        break;

    case 8 ... 15:

        env->gregs[n] = ldl_p(mem_buf);

        break;

    case 16:

        env->pc = ldl_p(mem_buf);

        break;

    case 17:

        env->pr = ldl_p(mem_buf);

        break;

    case 18:

        env->gbr = ldl_p(mem_buf);

        break;

    case 19:

        env->vbr = ldl_p(mem_buf);

        break;

    case 20:

        env->mach = ldl_p(mem_buf);

        break;

    case 21:

        env->macl = ldl_p(mem_buf);

        break;

    case 22:

        env->sr = ldl_p(mem_buf);

        break;

    case 23:

        env->fpul = ldl_p(mem_buf);

        break;

    case 24:

        env->fpscr = ldl_p(mem_buf);

        break;

    case 25 ... 40:

        if (env->fpscr & FPSCR_FR) {

            env->fregs[n - 9] = ldfl_p(mem_buf);

        } else {

            env->fregs[n - 25] = ldfl_p(mem_buf);

        }

        break;

    case 41:

        env->ssr = ldl_p(mem_buf);

        break;

    case 42:

        env->spc = ldl_p(mem_buf);

        break;

    case 43 ... 50:

        env->gregs[n - 43] = ldl_p(mem_buf);

        break;

    case 51 ... 58:

        env->gregs[n - (51 - 16)] = ldl_p(mem_buf);

        break;

    default:

        return 0;

    }

    return 4;

}