Archipelago » qemu

/*

 * LM32 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"

#include "hw/lm32/lm32_pic.h"

int lm32_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    LM32CPU *cpu = LM32_CPU(cs);

    CPULM32State *env = &cpu->env;

    if (n < 32) {

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

    } else {

        switch (n) {

        case 32:

            return gdb_get_reg32(mem_buf, env->pc);

        /* FIXME: put in right exception ID */

        case 33:

            return gdb_get_reg32(mem_buf, 0);

        case 34:

            return gdb_get_reg32(mem_buf, env->eba);

        case 35:

            return gdb_get_reg32(mem_buf, env->deba);

        case 36:

            return gdb_get_reg32(mem_buf, env->ie);

        case 37:

            return gdb_get_reg32(mem_buf, lm32_pic_get_im(env->pic_state));

        case 38:

            return gdb_get_reg32(mem_buf, lm32_pic_get_ip(env->pic_state));

        }

    }

    return 0;

}

int lm32_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)

{

    LM32CPU *cpu = LM32_CPU(cs);

    CPUClass *cc = CPU_GET_CLASS(cs);

    CPULM32State *env = &cpu->env;

    uint32_t tmp;

    if (n > cc->gdb_num_core_regs) {

        return 0;

    }

    tmp = ldl_p(mem_buf);

    if (n < 32) {

        env->regs[n] = tmp;

    } else {

        switch (n) {

        case 32:

            env->pc = tmp;

            break;

        case 34:

            env->eba = tmp;

            break;

        case 35:

            env->deba = tmp;

            break;

        case 36:

            env->ie = tmp;

            break;

        case 37:

            lm32_pic_set_im(env->pic_state, tmp);

            break;

        case 38:

            lm32_pic_set_ip(env->pic_state, tmp);

            break;

        }

    }

    return 4;

}