105a24871SPaolo Bonzini /* 205a24871SPaolo Bonzini * host-signal.h: signal info dependent on the host architecture 305a24871SPaolo Bonzini * 405a24871SPaolo Bonzini * Copyright (c) 2003-2005 Fabrice Bellard 505a24871SPaolo Bonzini * Copyright (c) 2021 Linaro Limited 605a24871SPaolo Bonzini * 705a24871SPaolo Bonzini * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. 805a24871SPaolo Bonzini * See the COPYING file in the top-level directory. 905a24871SPaolo Bonzini */ 1005a24871SPaolo Bonzini 1105a24871SPaolo Bonzini #ifndef I386_HOST_SIGNAL_H 1205a24871SPaolo Bonzini #define I386_HOST_SIGNAL_H 1305a24871SPaolo Bonzini 14*9940799bSRichard Henderson /* The third argument to a SA_SIGINFO handler is ucontext_t. */ 15*9940799bSRichard Henderson typedef ucontext_t host_sigcontext; 16*9940799bSRichard Henderson host_signal_pc(host_sigcontext * uc)17*9940799bSRichard Hendersonstatic inline uintptr_t host_signal_pc(host_sigcontext *uc) 1805a24871SPaolo Bonzini { 1905a24871SPaolo Bonzini return uc->uc_mcontext.gregs[REG_EIP]; 2005a24871SPaolo Bonzini } 2105a24871SPaolo Bonzini host_signal_set_pc(host_sigcontext * uc,uintptr_t pc)22*9940799bSRichard Hendersonstatic inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc) 2305a24871SPaolo Bonzini { 2405a24871SPaolo Bonzini uc->uc_mcontext.gregs[REG_EIP] = pc; 2505a24871SPaolo Bonzini } 2605a24871SPaolo Bonzini host_signal_mask(host_sigcontext * uc)27*9940799bSRichard Hendersonstatic inline void *host_signal_mask(host_sigcontext *uc) 28c8c89a6aSRichard Henderson { 29c8c89a6aSRichard Henderson return &uc->uc_sigmask; 30c8c89a6aSRichard Henderson } 31c8c89a6aSRichard Henderson host_signal_write(siginfo_t * info,host_sigcontext * uc)32*9940799bSRichard Hendersonstatic inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc) 3305a24871SPaolo Bonzini { 3405a24871SPaolo Bonzini return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe 3505a24871SPaolo Bonzini && (uc->uc_mcontext.gregs[REG_ERR] & 0x2); 3605a24871SPaolo Bonzini } 3705a24871SPaolo Bonzini 3805a24871SPaolo Bonzini #endif 39