linux-user/i386/target_cpu.h

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