| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) */ |