LXR linux/arch/sparc/include/asm/fpumacro.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* fpumacro.h: FPU related macros.
   3 *
   4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   5 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
   6 */
   7
   8#ifndef _SPARC64_FPUMACRO_H
   9#define _SPARC64_FPUMACRO_H
  10
  11#include <asm/asi.h>
  12#include <asm/visasm.h>
  13
  14struct fpustate {
  15        u32     regs[64];
  16};
  17
  18#define FPUSTATE (struct fpustate *)(current_thread_info()->fpregs)
  19
  20static inline unsigned long fprs_read(void)
  21{
  22        unsigned long retval;
  23
  24        __asm__ __volatile__("rd %%fprs, %0" : "=r" (retval));
  25
  26        return retval;
  27}
  28
  29static inline void fprs_write(unsigned long val)
  30{
  31        __asm__ __volatile__("wr %0, 0x0, %%fprs" : : "r" (val));
  32}
  33
  34#endif /* !(_SPARC64_FPUMACRO_H) */
  35