1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_FPU_XCR_H
3#define _ASM_X86_FPU_XCR_H
4
5/*
6 * MXCSR and XCR definitions:
7 */
8
9static inline void ldmxcsr(u32 mxcsr)
10{
11	asm volatile("ldmxcsr %0" :: "m" (mxcsr));
12}
13
14extern unsigned int mxcsr_feature_mask;
15
16#define XCR_XFEATURE_ENABLED_MASK	0x00000000
17
18static inline u64 xgetbv(u32 index)
19{
20	u32 eax, edx;
21
22	asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index));
23	return eax + ((u64)edx << 32);
24}
25
26static inline void xsetbv(u32 index, u64 value)
27{
28	u32 eax = value;
29	u32 edx = value >> 32;
30
31	asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index));
32}
33
34#endif /* _ASM_X86_FPU_XCR_H */
35