linux-user/s390x/target_cpu.h

   1 /*
   2  * S/390 specific CPU ABI and functions for linux-user
   3  *
   4  * Copyright (c) 2009 Ulrich Hecht
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #ifndef S390X_TARGET_CPU_H
  20 #define S390X_TARGET_CPU_H
  21
  22 static inline void cpu_clone_regs_child(CPUS390XState *env, target_ulong newsp,
  23                                         unsigned flags)
  24 {
  25     if (newsp) {
  26         env->regs[15] = newsp;
  27     }
  28     env->regs[2] = 0;
  29 }
  30
  31 static inline void cpu_clone_regs_parent(CPUS390XState *env, unsigned flags)
  32 {
  33 }
  34
  35 static inline void cpu_set_tls(CPUS390XState *env, target_ulong newtls)
  36 {
  37     env->aregs[0] = newtls >> 32;
  38     env->aregs[1] = newtls & 0xffffffffULL;
  39 }
  40
  41 static inline abi_ulong get_sp_from_cpustate(CPUS390XState *state)
  42 {
  43    return state->regs[15];
  44 }
  45 #endif