LXR qemu/target/arm/gdbstub64.c

   1/*
   2 * ARM gdb server stub: AArch64 specific functions.
   3 *
   4 * Copyright (c) 2013 SUSE LINUX Products GmbH
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19#include "qemu/osdep.h"
  20#include "qemu-common.h"
  21#include "cpu.h"
  22#include "exec/gdbstub.h"
  23
  24int aarch64_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
  25{
  26    ARMCPU *cpu = ARM_CPU(cs);
  27    CPUARMState *env = &cpu->env;
  28
  29    if (n < 31) {
  30        /* Core integer register.  */
  31        return gdb_get_reg64(mem_buf, env->xregs[n]);
  32    }
  33    switch (n) {
  34    case 31:
  35        return gdb_get_reg64(mem_buf, env->xregs[31]);
  36    case 32:
  37        return gdb_get_reg64(mem_buf, env->pc);
  38    case 33:
  39        return gdb_get_reg32(mem_buf, pstate_read(env));
  40    }
  41    /* Unknown register.  */
  42    return 0;
  43}
  44
  45int aarch64_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
  46{
  47    ARMCPU *cpu = ARM_CPU(cs);
  48    CPUARMState *env = &cpu->env;
  49    uint64_t tmp;
  50
  51    tmp = ldq_p(mem_buf);
  52
  53    if (n < 31) {
  54        /* Core integer register.  */
  55        env->xregs[n] = tmp;
  56        return 8;
  57    }
  58    switch (n) {
  59    case 31:
  60        env->xregs[31] = tmp;
  61        return 8;
  62    case 32:
  63        env->pc = tmp;
  64        return 8;
  65    case 33:
  66        /* CPSR */
  67        pstate_write(env, tmp);
  68        return 4;
  69    }
  70    /* Unknown register.  */
  71    return 0;
  72}
  73