105a24871SPaolo Bonzini /* 205a24871SPaolo Bonzini * host-signal.h: signal info dependent on the host architecture 305a24871SPaolo Bonzini * 405a24871SPaolo Bonzini * Copyright (C) 2021 Linaro Limited 505a24871SPaolo Bonzini * 605a24871SPaolo Bonzini * This work is licensed under the terms of the GNU GPL, version 2 or later. 705a24871SPaolo Bonzini * See the COPYING file in the top-level directory. 805a24871SPaolo Bonzini */ 905a24871SPaolo Bonzini 1005a24871SPaolo Bonzini #ifndef X86_64_HOST_SIGNAL_H 1105a24871SPaolo Bonzini #define X86_64_HOST_SIGNAL_H 1205a24871SPaolo Bonzini 13*9940799bSRichard Henderson /* The third argument to a SA_SIGINFO handler is ucontext_t. */ 14*9940799bSRichard Henderson typedef ucontext_t host_sigcontext; 15*9940799bSRichard Henderson host_signal_pc(host_sigcontext * uc)16*9940799bSRichard Hendersonstatic inline uintptr_t host_signal_pc(host_sigcontext *uc) 1705a24871SPaolo Bonzini { 1805a24871SPaolo Bonzini return uc->uc_mcontext.gregs[REG_RIP]; 1905a24871SPaolo Bonzini } 2005a24871SPaolo Bonzini host_signal_set_pc(host_sigcontext * uc,uintptr_t pc)21*9940799bSRichard Hendersonstatic inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc) 2205a24871SPaolo Bonzini { 2305a24871SPaolo Bonzini uc->uc_mcontext.gregs[REG_RIP] = pc; 2405a24871SPaolo Bonzini } 2505a24871SPaolo Bonzini host_signal_mask(host_sigcontext * uc)26*9940799bSRichard Hendersonstatic inline void *host_signal_mask(host_sigcontext *uc) 27c8c89a6aSRichard Henderson { 28c8c89a6aSRichard Henderson return &uc->uc_sigmask; 29c8c89a6aSRichard Henderson } 30c8c89a6aSRichard Henderson host_signal_write(siginfo_t * info,host_sigcontext * uc)31*9940799bSRichard Hendersonstatic inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc) 3205a24871SPaolo Bonzini { 3305a24871SPaolo Bonzini return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe 3405a24871SPaolo Bonzini && (uc->uc_mcontext.gregs[REG_ERR] & 0x2); 3505a24871SPaolo Bonzini } 3605a24871SPaolo Bonzini 3705a24871SPaolo Bonzini #endif 38