18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_X86_FPU_XCR_H 38c2ecf20Sopenharmony_ci#define _ASM_X86_FPU_XCR_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci/* 68c2ecf20Sopenharmony_ci * MXCSR and XCR definitions: 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_cistatic inline void ldmxcsr(u32 mxcsr) 108c2ecf20Sopenharmony_ci{ 118c2ecf20Sopenharmony_ci asm volatile("ldmxcsr %0" :: "m" (mxcsr)); 128c2ecf20Sopenharmony_ci} 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciextern unsigned int mxcsr_feature_mask; 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci#define XCR_XFEATURE_ENABLED_MASK 0x00000000 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_cistatic inline u64 xgetbv(u32 index) 198c2ecf20Sopenharmony_ci{ 208c2ecf20Sopenharmony_ci u32 eax, edx; 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index)); 238c2ecf20Sopenharmony_ci return eax + ((u64)edx << 32); 248c2ecf20Sopenharmony_ci} 258c2ecf20Sopenharmony_ci 268c2ecf20Sopenharmony_cistatic inline void xsetbv(u32 index, u64 value) 278c2ecf20Sopenharmony_ci{ 288c2ecf20Sopenharmony_ci u32 eax = value; 298c2ecf20Sopenharmony_ci u32 edx = value >> 32; 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index)); 328c2ecf20Sopenharmony_ci} 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#endif /* _ASM_X86_FPU_XCR_H */ 35