linux-user: Add support for a group of btrfs ioctls used for snapshots
[qemu.git] / linux-user / ppc / target_cpu.h
1 /*
2 * PowerPC specific CPU ABI and functions for linux-user
3 *
4 * Copyright (c) 2003-2007 Jocelyn Mayer
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 PPC_TARGET_CPU_H
20 #define PPC_TARGET_CPU_H
21
22 static inline void cpu_clone_regs_child(CPUPPCState *env, target_ulong newsp,
23 unsigned flags)
24 {
25 if (newsp) {
26 env->gpr[1] = newsp;
27 }
28 env->gpr[3] = 0;
29 }
30
31 static inline void cpu_clone_regs_parent(CPUPPCState *env, unsigned flags)
32 {
33 }
34
35 static inline void cpu_set_tls(CPUPPCState *env, target_ulong newtls)
36 {
37 #if defined(TARGET_PPC64)
38 /* The kernel checks TIF_32BIT here; we don't support loading 32-bit
39 binaries on PPC64 yet. */
40 env->gpr[13] = newtls;
41 #else
42 env->gpr[2] = newtls;
43 #endif
44 }
45
46 #ifndef EF_PPC64_ABI
47 #define EF_PPC64_ABI 0x3
48 #endif
49
50 static inline uint32_t get_ppc64_abi(struct image_info *infop)
51 {
52 return infop->elf_flags & EF_PPC64_ABI;
53 }
54
55 static inline abi_ulong get_sp_from_cpustate(CPUPPCState *state)
56 {
57 return state->gpr[1];
58 }
59 #endif