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bsd-user/host/arm/host-signal.h: Implement host_signal_*

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Implement host_signal_pc, host_signal_set_pc and host_signal_write for
arm.

Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Warner Losh 2022-01-08 17:14:12 -07:00
parent e32a63010f
commit 6e0bc06e21
1 changed files with 35 additions and 0 deletions
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35
bsd-user/host/arm/host-signal.h Normal file
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/*
* host-signal.h: signal info dependent on the host architecture
*
* Copyright (c) 2021 Warner Losh
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef ARM_HOST_SIGNAL_H
#define ARM_HOST_SIGNAL_H
#include <sys/ucontext.h>
static inline uintptr_t host_signal_pc(ucontext_t *uc)
{
return uc->uc_mcontext.__gregs[_REG_PC];
}
static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
{
uc->uc_mcontext.__gregs[_REG_PC] = pc;
}
static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
{
/*
* In the FSR, bit 11 is WnR. FreeBSD returns this as part of the
* si_info.si_trapno.
*/
uint32_t fsr = info->si_trapno;
return extract32(fsr, 11, 1);
}
#endif