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//usr/src/linux-headers-5.15.31-051531/arch/x86/include/asm/fpu/xcr.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_FPU_XCR_H #define _ASM_X86_FPU_XCR_H /* * MXCSR and XCR definitions: */ static inline void ldmxcsr(u32 mxcsr) { asm volatile("ldmxcsr %0" :: "m" (mxcsr)); } extern unsigned int mxcsr_feature_mask; #define XCR_XFEATURE_ENABLED_MASK 0x00000000 static inline u64 xgetbv(u32 index) { u32 eax, edx; asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index)); return eax + ((u64)edx << 32); } static inline void xsetbv(u32 index, u64 value) { u32 eax = value; u32 edx = value >> 32; asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index)); } #endif /* _ASM_X86_FPU_XCR_H */