1 | /* |
2 | * ARM AArch64 specific CPU ABI and functions for linux-user |
3 | * |
4 | * Copyright (c) 2013 Alexander Graf <agraf@suse.de> |
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 | #ifndef AARCH64_TARGET_CPU_H |
20 | #define AARCH64_TARGET_CPU_H |
21 | |
22 | static inline void cpu_clone_regs(CPUARMState *env, target_ulong newsp) |
23 | { |
24 | if (newsp) { |
25 | env->xregs[31] = newsp; |
26 | } |
27 | env->xregs[0] = 0; |
28 | } |
29 | |
30 | static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls) |
31 | { |
32 | /* Note that AArch64 Linux keeps the TLS pointer in TPIDR; this is |
33 | * different from AArch32 Linux, which uses TPIDRRO. |
34 | */ |
35 | env->cp15.tpidr_el[0] = newtls; |
36 | } |
37 | |
38 | static inline abi_ulong get_sp_from_cpustate(CPUARMState *state) |
39 | { |
40 | return state->xregs[31]; |
41 | } |
42 | #endif |
43 | |