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_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 32 static inline void cpu_clone_regs_parent(CPUX86State *env, unsigned flags) 33 { 34 } 35 36 #if defined(TARGET_ABI32) 37 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr); 38 39 static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls) 40 { 41 do_set_thread_area(env, newtls); 42 cpu_x86_load_seg(env, R_GS, env->segs[R_GS].selector); 43 } 44 #else 45 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr); 46 47 static 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 53 static inline abi_ulong get_sp_from_cpustate(CPUX86State *state) 54 { 55 return state->regs[R_ESP]; 56 } 57 #endif /* I386_TARGET_CPU_H */ 58