1 /*
2 * Nios2 specific CPU ABI and functions for linux-user
3 *
4 * Copyright (c) 2016 Marek Vasut <marex@denx.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 2.1 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 NIOS2_TARGET_CPU_H
21 #define NIOS2_TARGET_CPU_H
22
cpu_clone_regs_child(CPUNios2State * env,target_ulong newsp,unsigned flags)23 static inline void cpu_clone_regs_child(CPUNios2State *env, target_ulong newsp,
24 unsigned flags)
25 {
26 if (newsp) {
27 env->regs[R_SP] = newsp;
28 }
29 env->regs[R_RET0] = 0;
30 }
31
cpu_clone_regs_parent(CPUNios2State * env,unsigned flags)32 static inline void cpu_clone_regs_parent(CPUNios2State *env, unsigned flags)
33 {
34 }
35
cpu_set_tls(CPUNios2State * env,target_ulong newtls)36 static inline void cpu_set_tls(CPUNios2State *env, target_ulong newtls)
37 {
38 /*
39 * Linux kernel 3.10 does not pay any attention to CLONE_SETTLS
40 * in copy_thread(), so QEMU need not do so either.
41 */
42 }
43
get_sp_from_cpustate(CPUNios2State * state)44 static inline abi_ulong get_sp_from_cpustate(CPUNios2State *state)
45 {
46 return state->regs[R_SP];
47 }
48 #endif
49