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Peter Maydell6291ad72013-06-28 14:22:32 +01001/*
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
Markus Armbruster55c50632016-06-29 16:05:18 +020020#ifndef I386_TARGET_CPU_H
21#define I386_TARGET_CPU_H
Peter Maydell6291ad72013-06-28 14:22:32 +010022
Richard Henderson608999d2019-11-06 12:33:15 +010023static inline void cpu_clone_regs_child(CPUX86State *env, target_ulong newsp,
24 unsigned flags)
Peter Maydell6291ad72013-06-28 14:22:32 +010025{
26 if (newsp) {
27 env->regs[R_ESP] = newsp;
28 }
29 env->regs[R_EAX] = 0;
30}
31
Richard Henderson07a6ecf2019-11-06 12:33:16 +010032static inline void cpu_clone_regs_parent(CPUX86State *env, unsigned flags)
33{
34}
35
Alexander Grafbc22eb42013-07-16 18:44:58 +010036#if defined(TARGET_ABI32)
37abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr);
Peter Maydell6291ad72013-06-28 14:22:32 +010038
Alexander Grafbc22eb42013-07-16 18:44:58 +010039static 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}
Peter Maydell2667e712013-07-16 18:44:59 +010044#else
45abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr);
46
47static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
48{
49 do_arch_prctl(env, TARGET_ARCH_SET_FS, newtls);
50}
Alexander Grafbc22eb42013-07-16 18:44:58 +010051#endif /* defined(TARGET_ABI32) */
52
Laurent Vivier9850f9f2018-05-29 21:42:00 +020053static inline abi_ulong get_sp_from_cpustate(CPUX86State *state)
54{
55 return state->regs[R_ESP];
56}
Markus Armbruster55c50632016-06-29 16:05:18 +020057#endif /* I386_TARGET_CPU_H */