| 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 | |
| 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 | abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr); |
| 37 | |
| 38 | #if defined(TARGET_ABI32) |
| 39 | abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr); |
| 40 | |
| 41 | static 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 |
| 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 */ |