LXR qemu/target/rx/gdbstub.c

   1/*
   2 * RX gdb server stub
   3 *
   4 * Copyright (c) 2019 Yoshinori Sato
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2 or later, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 *
  15 * You should have received a copy of the GNU General Public License along with
  16 * this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18#include "qemu/osdep.h"
  19#include "qemu-common.h"
  20#include "cpu.h"
  21#include "exec/gdbstub.h"
  22
  23int rx_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
  24{
  25    RXCPU *cpu = RX_CPU(cs);
  26    CPURXState *env = &cpu->env;
  27
  28    switch (n) {
  29    case 0 ... 15:
  30        return gdb_get_regl(mem_buf, env->regs[n]);
  31    case 16:
  32        return gdb_get_regl(mem_buf, (env->psw_u) ? env->regs[0] : env->usp);
  33    case 17:
  34        return gdb_get_regl(mem_buf, (!env->psw_u) ? env->regs[0] : env->isp);
  35    case 18:
  36        return gdb_get_regl(mem_buf, rx_cpu_pack_psw(env));
  37    case 19:
  38        return gdb_get_regl(mem_buf, env->pc);
  39    case 20:
  40        return gdb_get_regl(mem_buf, env->intb);
  41    case 21:
  42        return gdb_get_regl(mem_buf, env->bpsw);
  43    case 22:
  44        return gdb_get_regl(mem_buf, env->bpc);
  45    case 23:
  46        return gdb_get_regl(mem_buf, env->fintv);
  47    case 24:
  48        return gdb_get_regl(mem_buf, env->fpsw);
  49    case 25:
  50        return 0;
  51    }
  52    return 0;
  53}
  54
  55int rx_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
  56{
  57    RXCPU *cpu = RX_CPU(cs);
  58    CPURXState *env = &cpu->env;
  59    uint32_t psw;
  60    switch (n) {
  61    case 0 ... 15:
  62        env->regs[n] = ldl_p(mem_buf);
  63        if (n == 0) {
  64            if (env->psw_u) {
  65                env->usp = env->regs[0];
  66            } else {
  67                env->isp = env->regs[0];
  68            }
  69        }
  70        break;
  71    case 16:
  72        env->usp = ldl_p(mem_buf);
  73        if (env->psw_u) {
  74            env->regs[0] = ldl_p(mem_buf);
  75        }
  76        break;
  77    case 17:
  78        env->isp = ldl_p(mem_buf);
  79        if (!env->psw_u) {
  80            env->regs[0] = ldl_p(mem_buf);
  81        }
  82        break;
  83    case 18:
  84        psw = ldl_p(mem_buf);
  85        rx_cpu_unpack_psw(env, psw, 1);
  86        break;
  87    case 19:
  88        env->pc = ldl_p(mem_buf);
  89        break;
  90    case 20:
  91        env->intb = ldl_p(mem_buf);
  92        break;
  93    case 21:
  94        env->bpsw = ldl_p(mem_buf);
  95        break;
  96    case 22:
  97        env->bpc = ldl_p(mem_buf);
  98        break;
  99    case 23:
 100        env->fintv = ldl_p(mem_buf);
 101        break;
 102    case 24:
 103        env->fpsw = ldl_p(mem_buf);
 104        break;
 105    case 25:
 106        return 8;
 107    default:
 108        return 0;
 109    }
 110
 111    return 4;
 112}
 113