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Linux Cross Reference
Linux/include/asm-sparc64/fpumacro.h

Version: ~ [ 2.4.0 ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~ 
  1 /* fpumacro.h: FPU related macros.
  2  *
  3  * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  4  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
  5  */
  6 
  7 #ifndef _SPARC64_FPUMACRO_H
  8 #define _SPARC64_FPUMACRO_H
  9 
 10 #include <asm/asi.h>
 11 #include <asm/visasm.h>
 12 
 13 struct fpustate {
 14         u32     regs[64];
 15 };
 16 
 17 #define FPUSTATE (struct fpustate *)(((unsigned long)current) + AOFF_task_fpregs)
 18 
 19 extern __inline__ unsigned long fprs_read(void)
 20 {
 21         unsigned long retval;
 22 
 23         __asm__ __volatile__("rd %%fprs, %0" : "=r" (retval));
 24 
 25         return retval;
 26 }
 27 
 28 extern __inline__ void fprs_write(unsigned long val)
 29 {
 30         __asm__ __volatile__("wr %0, 0x0, %%fprs" : : "r" (val));
 31 }
 32 
 33 #endif /* !(_SPARC64_FPUMACRO_H) */
 34
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