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 "exec/gdbstub.h"
  22
  23 int aarch64_cpu_gdb_read_register(CPUState *cs, uint8_t *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
  44 int 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 }