LXR qemu/linux-user/i386/target

   1/*
   2 * i386 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 2.1 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
  20#ifndef I386_TARGET_CPU_H
  21#define I386_TARGET_CPU_H
  22
  23static inline void cpu_clone_regs_child(CPUX86State *env, target_ulong newsp,
  24                                        unsigned flags)
  25{
  26    if (newsp) {
  27        env->regs[R_ESP] = newsp;
  28    }
  29    env->regs[R_EAX] = 0;
  30}
  31
  32static inline void cpu_clone_regs_parent(CPUX86State *env, unsigned flags)
  33{
  34}
  35
  36abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr);
  37
  38#if defined(TARGET_ABI32)
  39abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr);
  40
  41static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
  42{
  43    do_set_thread_area(env, newtls);
  44    cpu_x86_load_seg(env, R_GS, env->segs[R_GS].selector);
  45}
  46#else
  47static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
  48{
  49    do_arch_prctl(env, TARGET_ARCH_SET_FS, newtls);
  50}
  51#endif /* defined(TARGET_ABI32) */
  52
  53static inline abi_ulong get_sp_from_cpustate(CPUX86State *state)
  54{
  55    return state->regs[R_ESP];
  56}
  57#endif /* I386_TARGET_CPU_H */
  58