linux-user/hppa/target_cpu.h

   1 /*
   2  * HPPA specific CPU ABI and functions for linux-user
   3  *
   4  *  Copyright (c) 2016  Richard Henderson
   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 #ifndef HPPA_TARGET_CPU_H
  20 #define HPPA_TARGET_CPU_H
  21
  22 static inline void cpu_clone_regs_child(CPUHPPAState *env, target_ulong newsp,
  23                                         unsigned flags)
  24 {
  25     if (newsp) {
  26         env->gr[30] = newsp;
  27     }
  28     /* Indicate child in return value.  */
  29     env->gr[28] = 0;
  30     /* Return from the syscall.  */
  31     env->iaoq_f = env->gr[31] | PRIV_USER;
  32     env->iaoq_b = env->iaoq_f + 4;
  33 }
  34
  35 static inline void cpu_clone_regs_parent(CPUHPPAState *env, unsigned flags)
  36 {
  37 }
  38
  39 static inline void cpu_set_tls(CPUHPPAState *env, target_ulong newtls)
  40 {
  41     env->cr[27] = newtls;
  42 }
  43
  44 static inline abi_ulong get_sp_from_cpustate(CPUHPPAState *state)
  45 {
  46     return state->gr[30];
  47 }
  48 #endif