| 1 | /* |
| 2 | * Alpha specific CPU ABI and functions for linux-user |
| 3 | * |
| 4 | * Copyright (c) 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 2.1 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 | #ifndef ALPHA_TARGET_CPU_H |
| 20 | #define ALPHA_TARGET_CPU_H |
| 21 | |
| 22 | static inline void cpu_clone_regs_child(CPUAlphaState *env, target_ulong newsp, |
| 23 | unsigned flags) |
| 24 | { |
| 25 | if (newsp) { |
| 26 | env->ir[IR_SP] = newsp; |
| 27 | } |
| 28 | env->ir[IR_V0] = 0; |
| 29 | env->ir[IR_A3] = 0; |
| 30 | env->ir[IR_A4] = 1; /* OSF/1 secondary return: child */ |
| 31 | } |
| 32 | |
| 33 | static inline void cpu_clone_regs_parent(CPUAlphaState *env, unsigned flags) |
| 34 | { |
| 35 | /* |
| 36 | * OSF/1 secondary return: parent |
| 37 | * Note that the kernel does not do this if SETTLS, because the |
| 38 | * settls argument register is still live after copy_thread. |
| 39 | */ |
| 40 | if (!(flags & CLONE_SETTLS)) { |
| 41 | env->ir[IR_A4] = 0; |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | static inline void cpu_set_tls(CPUAlphaState *env, target_ulong newtls) |
| 46 | { |
| 47 | env->unique = newtls; |
| 48 | } |
| 49 | |
| 50 | static inline abi_ulong get_sp_from_cpustate(CPUAlphaState *state) |
| 51 | { |
| 52 | return state->ir[IR_SP]; |
| 53 | } |
| 54 | #endif |