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Marek Vasuta0a839b2017-01-18 23:01:42 +01001/*
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
Chetan Pant1c791452020-10-23 12:24:55 +00009 * version 2.1 of the License, or (at your option) any later version.
Marek Vasuta0a839b2017-01-18 23:01:42 +010010 *
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 Armbruster43e0c352019-03-15 15:51:18 +010020#ifndef NIOS2_TARGET_CPU_H
21#define NIOS2_TARGET_CPU_H
Marek Vasuta0a839b2017-01-18 23:01:42 +010022
Richard Henderson608999d2019-11-06 12:33:15 +010023static inline void cpu_clone_regs_child(CPUNios2State *env, target_ulong newsp,
24 unsigned flags)
Marek Vasuta0a839b2017-01-18 23:01:42 +010025{
26 if (newsp) {
27 env->regs[R_SP] = newsp;
28 }
29 env->regs[R_RET0] = 0;
Richard Henderson42192df2022-04-21 08:16:33 -070030 env->regs[7] = 0;
Marek Vasuta0a839b2017-01-18 23:01:42 +010031}
32
Richard Henderson07a6ecf2019-11-06 12:33:16 +010033static inline void cpu_clone_regs_parent(CPUNios2State *env, unsigned flags)
34{
35}
36
Marek Vasuta0a839b2017-01-18 23:01:42 +010037static inline void cpu_set_tls(CPUNios2State *env, target_ulong newtls)
38{
39 /*
40 * Linux kernel 3.10 does not pay any attention to CLONE_SETTLS
41 * in copy_thread(), so QEMU need not do so either.
42 */
43}
44
Laurent Vivier9850f9f2018-05-29 21:42:00 +020045static inline abi_ulong get_sp_from_cpustate(CPUNios2State *state)
46{
47 return state->regs[R_SP];
48}
Marek Vasuta0a839b2017-01-18 23:01:42 +010049#endif