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 2.1 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 "cpu.h"
  21#include "exec/gdbstub.h"
  22
  23int aarch64_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
  24{
  25    ARMCPU *cpu = ARM_CPU(cs);
  26    CPUARMState *env = &cpu->env;
  27
  28    if (n < 31) {
  29        /* Core integer register.  */
  30        return gdb_get_reg64(mem_buf, env->xregs[n]);
  31    }
  32    switch (n) {
  33    case 31:
  34        return gdb_get_reg64(mem_buf, env->xregs[31]);
  35    case 32:
  36        return gdb_get_reg64(mem_buf, env->pc);
  37    case 33:
  38        return gdb_get_reg32(mem_buf, pstate_read(env));
  39    }
  40    /* Unknown register.  */
  41    return 0;
  42}
  43
  44int aarch64_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
  45{
  46    ARMCPU *cpu = ARM_CPU(cs);
  47    CPUARMState *env = &cpu->env;
  48    uint64_t tmp;
  49
  50    tmp = ldq_p(mem_buf);
  51
  52    if (n < 31) {
  53        /* Core integer register.  */
  54        env->xregs[n] = tmp;
  55        return 8;
  56    }
  57    switch (n) {
  58    case 31:
  59        env->xregs[31] = tmp;
  60        return 8;
  61    case 32:
  62        env->pc = tmp;
  63        return 8;
  64    case 33:
  65        /* CPSR */
  66        pstate_write(env, tmp);
  67        return 4;
  68    }
  69    /* Unknown register.  */
  70    return 0;
  71}
  72