LXR qemu/target-microblaze/gdbstub.c

   1/*
   2 * MicroBlaze gdb server stub
   3 *
   4 * Copyright (c) 2003-2005 Fabrice Bellard
   5 * Copyright (c) 2013 SUSE LINUX Products GmbH
   6 *
   7 * This library is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU Lesser General Public
   9 * License as published by the Free Software Foundation; either
  10 * version 2 of the License, or (at your option) any later version.
  11 *
  12 * This library is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 * Lesser General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU Lesser General Public
  18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20#include "qemu/osdep.h"
  21#include "qemu-common.h"
  22#include "exec/gdbstub.h"
  23
  24int mb_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
  25{
  26    MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
  27    CPUMBState *env = &cpu->env;
  28
  29    if (n < 32) {
  30        return gdb_get_reg32(mem_buf, env->regs[n]);
  31    } else {
  32        return gdb_get_reg32(mem_buf, env->sregs[n - 32]);
  33    }
  34    return 0;
  35}
  36
  37int mb_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
  38{
  39    MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
  40    CPUClass *cc = CPU_GET_CLASS(cs);
  41    CPUMBState *env = &cpu->env;
  42    uint32_t tmp;
  43
  44    if (n > cc->gdb_num_core_regs) {
  45        return 0;
  46    }
  47
  48    tmp = ldl_p(mem_buf);
  49
  50    if (n < 32) {
  51        env->regs[n] = tmp;
  52    } else {
  53        env->sregs[n - 32] = tmp;
  54    }
  55    return 4;
  56}
  57