xref: /openbmc/linux/arch/sparc/include/asm/fpumacro.h (revision b2441318)
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 
fprs_read(void)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 
fprs_write(unsigned long val)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) */
35