| 1 | /* |
| 2 | * host-signal.h: signal info dependent on the host architecture |
| 3 | * |
| 4 | * Copyright (C) 2021 Linaro Limited |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 7 | * See the COPYING file in the top-level directory. |
| 8 | */ |
| 9 | |
| 10 | #ifndef X86_64_HOST_SIGNAL_H |
| 11 | #define X86_64_HOST_SIGNAL_H |
| 12 | |
| 13 | /* The third argument to a SA_SIGINFO handler is ucontext_t. */ |
| 14 | typedef ucontext_t host_sigcontext; |
| 15 | |
| 16 | static inline uintptr_t host_signal_pc(host_sigcontext *uc) |
| 17 | { |
| 18 | return uc->uc_mcontext.gregs[REG_RIP]; |
| 19 | } |
| 20 | |
| 21 | static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc) |
| 22 | { |
| 23 | uc->uc_mcontext.gregs[REG_RIP] = pc; |
| 24 | } |
| 25 | |
| 26 | static inline void *host_signal_mask(host_sigcontext *uc) |
| 27 | { |
| 28 | return &uc->uc_sigmask; |
| 29 | } |
| 30 | |
| 31 | static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc) |
| 32 | { |
| 33 | return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe |
| 34 | && (uc->uc_mcontext.gregs[REG_ERR] & 0x2); |
| 35 | } |
| 36 | |
| 37 | #endif |