linux-user/arm/target_cpu.h

   1 /*
   2  * ARM specific CPU ABI and functions for linux-user
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   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 #ifndef ARM_TARGET_CPU_H
  20 #define ARM_TARGET_CPU_H
  21
  22 /* We need to be able to map the commpage.
  23    See validate_guest_space in linux-user/elfload.c.  */
  24 #define MAX_RESERVED_VA  0xffff0000ul
  25
  26 static inline void cpu_clone_regs(CPUARMState *env, target_ulong newsp)
  27 {
  28     if (newsp) {
  29         env->regs[13] = newsp;
  30     }
  31     env->regs[0] = 0;
  32 }
  33
  34 static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
  35 {
  36     if (access_secure_reg(env)) {
  37         env->cp15.tpidruro_s = newtls;
  38     } else {
  39         env->cp15.tpidrro_el[0] = newtls;
  40     }
  41 }
  42
  43 static inline target_ulong cpu_get_tls(CPUARMState *env)
  44 {
  45     if (access_secure_reg(env)) {
  46         return env->cp15.tpidruro_s;
  47     } else {
  48         return env->cp15.tpidrro_el[0];
  49     }
  50 }
  51
  52 static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
  53 {
  54    return state->regs[13];
  55 }
  56 #endif