projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| a00736e9 SR |
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) */ |