| 1 | /* |
| 2 | * host-signal.h: signal info dependent on the host architecture |
| 3 | * |
| 4 | * Copyright (c) 2021 Warner Losh |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | */ |
| 8 | |
| 9 | #ifndef ARM_HOST_SIGNAL_H |
| 10 | #define ARM_HOST_SIGNAL_H |
| 11 | |
| 12 | #include <sys/ucontext.h> |
| 13 | |
| 14 | static inline uintptr_t host_signal_pc(ucontext_t *uc) |
| 15 | { |
| 16 | return uc->uc_mcontext.__gregs[_REG_PC]; |
| 17 | } |
| 18 | |
| 19 | static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) |
| 20 | { |
| 21 | uc->uc_mcontext.__gregs[_REG_PC] = pc; |
| 22 | } |
| 23 | |
| 24 | static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) |
| 25 | { |
| 26 | /* |
| 27 | * In the FSR, bit 11 is WnR. FreeBSD returns this as part of the |
| 28 | * si_info.si_trapno. |
| 29 | */ |
| 30 | uint32_t fsr = info->si_trapno; |
| 31 | |
| 32 | return extract32(fsr, 11, 1); |
| 33 | } |
| 34 | |
| 35 | #endif |