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 Henderson static 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 Henderson static 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 Henderson static 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 Henderson static 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
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