On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <i...@bsdimp.com> wrote:
>
> Update ucontext to implement sigreturn.
>
> Signed-off-by: Stacey Son <s...@freebsd.org>
> Signed-off-by: Warner Losh <i...@bsdimp.com>
> ---
> bsd-user/arm/target_arch_signal.h | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_signal.h
> b/bsd-user/arm/target_arch_signal.h
> index 1d051af9ae..7da68c727c 100644
> --- a/bsd-user/arm/target_arch_signal.h
> +++ b/bsd-user/arm/target_arch_signal.h
> @@ -232,4 +232,22 @@ static inline abi_long set_mcontext(CPUARMState *regs,
> target_mcontext_t *mcp,
> return err;
> }
>
> +/* Compare to arm/arm/machdep.c sys_sigreturn() */
> +static inline abi_long get_ucontext_sigreturn(CPUARMState *regs,
> + abi_ulong target_sf, abi_ulong *target_uc)
> +{
> + uint32_t cpsr = cpsr_read(regs);
> +
> + *target_uc = 0;
> +
> + if ((cpsr & CPSR_M) != ARM_CPU_MODE_USR ||
> + (cpsr & (CPSR_I | CPSR_F)) != 0) {
> + return -TARGET_EINVAL;
> + }
> +
> + *target_uc = target_sf;
> +
> + return 0;
> +}
> +
> #endif /* !_TARGET_ARCH_SIGNAL_H_ */
> --
> 2.32.0
>
Reviewed-by: Kyle Evans <kev...@freebsd.org>
