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 *)(current_thread_info()->fpregs) 18 19 static 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 static 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