linux-user/sparc/target_cpu.h

   1 /*
   2  * SPARC specific CPU ABI and functions for linux-user
   3  *
   4  * Copyright (C) 2003 Thomas M. Ogrisegg <tom@fnord.at>
   5  * Copyright (C) 2003-2005 Fabrice Bellard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20 #ifndef SPARC_TARGET_CPU_H
  21 #define SPARC_TARGET_CPU_H
  22
  23 static inline void cpu_clone_regs(CPUSPARCState *env, target_ulong newsp)
  24 {
  25     if (newsp) {
  26         env->regwptr[22] = newsp;
  27     }
  28     /* syscall return for clone child: 0, and clear CF since
  29      * this counts as a success return value.
  30      */
  31     env->regwptr[0] = 0;
  32 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
  33     env->xcc &= ~PSR_CARRY;
  34 #else
  35     env->psr &= ~PSR_CARRY;
  36 #endif
  37 }
  38
  39 static inline void cpu_set_tls(CPUSPARCState *env, target_ulong newtls)
  40 {
  41     env->gregs[7] = newtls;
  42 }
  43
  44 #ifndef UREG_I6
  45 #define UREG_I6        6
  46 #endif
  47 #ifndef UREG_FP
  48 #define UREG_FP        UREG_I6
  49 #endif
  50
  51 static inline abi_ulong get_sp_from_cpustate(CPUSPARCState *state)
  52 {
  53     return state->regwptr[UREG_FP];
  54 }
  55 #endif