| Message ID | 20220125012947.14974-20-imp@bsdimp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | bsd-user: upstream our signal implementation | expand |
On 1/25/22 12:29, Warner Losh wrote: > 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> > --- > bsd-user/host/arm/host-signal.h | 35 +++++++++++++++++++++++++++++++++ > 1 file changed, 35 insertions(+) > create mode 100644 bsd-user/host/arm/host-signal.h Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/bsd-user/host/arm/host-signal.h b/bsd-user/host/arm/host-signal.h new file mode 100644 index 00000000000..56679bd6993 --- /dev/null +++ b/bsd-user/host/arm/host-signal.h @@ -0,0 +1,35 @@ +/* + * 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