On Wed, 20 May 2020 at 18:28, Richard Henderson
<richard.hender...@linaro.org> wrote:
>
> The kernel sets btype for the signal handler as if for a call.
>
> Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
> ---
> linux-user/aarch64/signal.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/linux-user/aarch64/signal.c b/linux-user/aarch64/signal.c
> index cd521ee42d..2c596a7088 100644
> --- a/linux-user/aarch64/signal.c
> +++ b/linux-user/aarch64/signal.c
> @@ -506,10 +506,16 @@ static void target_setup_frame(int usig, struct
> target_sigaction *ka,
> + offsetof(struct target_rt_frame_record, tramp);
> }
> env->xregs[0] = usig;
> - env->xregs[31] = frame_addr;
> env->xregs[29] = frame_addr + fr_ofs;
> - env->pc = ka->_sa_handler;
> env->xregs[30] = return_addr;
> + env->xregs[31] = frame_addr;
> + env->pc = ka->_sa_handler;
> +
> + /* Invoke the signal handler as if by indirect call. */
> + if (cpu_isar_feature(aa64_bti, env_archcpu(env))) {
> + env->btype = 2;
> + }
> +
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
thanks
-- PMM
