Merge remote-tracking branch 'remotes/dg-gitlab/tags/ppc-for-6.1-20210504' into staging
[qemu.git] / 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 2.1 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 */