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
  14 struct fpustate {
  15         u32     regs[64];
  16 };
  17
  18 #define FPUSTATE (struct fpustate *)(current_thread_info()->fpregs)
  19
  20 static 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
  29 static inline void fprs_write(unsigned long val)
  30 {
  31         __asm__ __volatile__("wr %0, 0x0, %%fprs" : : "r" (val));
  32 }
  33
  34 #endif /* !(_SPARC64_FPUMACRO_H) */