[PATCH 1/4] riscv: Use current pseudo-instructions to access the FCSR register

Kito Cheng kito.cheng@gmail.com
Tue Jan 21 07:24:00 GMT 2020


Hi Keith:

LGTM, thanks :)

On Tue, Jan 21, 2020 at 2:47 PM Keith Packard <keithp@keithp.com> wrote:
>
> Use fscsr and frcsr to store and read the FCSR register instead of
> fssr and frsr.
>
> Signed-off-by: Keith Packard <keithp@keithp.com>
> ---
>  newlib/libc/machine/riscv/ieeefp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/newlib/libc/machine/riscv/ieeefp.c b/newlib/libc/machine/riscv/ieeefp.c
> index 9094cc651..68ace0b09 100644
> --- a/newlib/libc/machine/riscv/ieeefp.c
> +++ b/newlib/libc/machine/riscv/ieeefp.c
> @@ -15,14 +15,14 @@
>  static void
>  fssr(unsigned value)
>  {
> -  asm volatile ("fssr %0" :: "r"(value));
> +  asm volatile ("fscsr %0" :: "r"(value));
>  }
>
>  static unsigned
>  frsr()
>  {
>    unsigned value;
> -  asm volatile ("frsr %0" : "=r" (value));
> +  asm volatile ("frcsr %0" : "=r" (value));
>    return value;
>  }
>
> --
> 2.25.0.rc1
>



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