56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/*
|
|
* 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
|
|
|
|
/* The third argument to a SA_SIGINFO handler is ucontext_t. */
|
|
typedef ucontext_t host_sigcontext;
|
|
|
|
static inline uintptr_t host_signal_pc(host_sigcontext *uc)
|
|
{
|
|
return uc->uc_mcontext.sc_pc;
|
|
}
|
|
|
|
static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc)
|
|
{
|
|
uc->uc_mcontext.sc_pc = pc;
|
|
}
|
|
|
|
static inline void *host_signal_mask(host_sigcontext *uc)
|
|
{
|
|
return &uc->uc_sigmask;
|
|
}
|
|
|
|
static inline bool host_signal_write(siginfo_t *info, host_sigcontext *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
|