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/*
* host-signal.h: signal info dependent on the host architecture
*
* Copyright (c) 2003-2005 Fabrice Bellard
* Copyright (c) 2021 Linaro Limited
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef ALPHA_HOST_SIGNAL_H
#define ALPHA_HOST_SIGNAL_H
static inline uintptr_t host_signal_pc(ucontext_t *uc)
{
return uc->uc_mcontext.sc_pc;
}
static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
{
uc->uc_mcontext.sc_pc = pc;
}
static inline void *host_signal_mask(ucontext_t *uc)
{
return &uc->uc_sigmask;
}
static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
{
uint32_t *pc = (uint32_t *)host_signal_pc(uc);
uint32_t insn = *pc;
/* XXX: need kernel patch to get write flag faster */
switch (insn >> 26) {
case 0x0d: /* stw */
case 0x0e: /* stb */
case 0x0f: /* stq_u */
case 0x24: /* stf */
case 0x25: /* stg */
case 0x26: /* sts */
case 0x27: /* stt */
case 0x2c: /* stl */
case 0x2d: /* stq */
case 0x2e: /* stl_c */
case 0x2f: /* stq_c */
return true;
}
return false;
}
#endif
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