LXR qemu/linux-user/sparc/target

   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
  23static 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
  39static 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
  51static inline abi_ulong get_sp_from_cpustate(CPUSPARCState *state)
  52{
  53    return state->regwptr[UREG_FP];
  54}
  55#endif
  56