Re: [PATCH 16/21] linux-user/riscv: Implement setup_sigtramp

[Philippe Mathieu-Daudé]

On 6/16/21 3:12 AM, Richard Henderson wrote:
> Create and record the rt signal trampoline.
> 
> This fixes a bug wrt libgcc fallback unwinding.  It expects
> the stack pointer to point to the siginfo_t, whereas we had
> inexplicably placed our private signal trampoline at the start
> of the signal frame instead of the end.  Now moot because we
> have removed it from the stack frame entirely.
> 
> Cc: qemu-riscv@nongnu.org
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  linux-user/riscv/target_signal.h |  2 ++
>  linux-user/riscv/signal.c        | 22 +++++++++++++---------
>  2 files changed, 15 insertions(+), 9 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>