1 #ifndef __ASM_X86_XSAVE_H 2 #define __ASM_X86_XSAVE_H 3 4 #include <linux/types.h> 5 #include <asm/processor.h> 6 #include <linux/uaccess.h> 7 8 /* Bit 63 of XCR0 is reserved for future expansion */ 9 #define XSTATE_EXTEND_MASK (~(XSTATE_FPSSE | (1ULL << 63))) 10 11 #define XSTATE_CPUID 0x0000000d 12 13 #define FXSAVE_SIZE 512 14 15 #define XSAVE_HDR_SIZE 64 16 #define XSAVE_HDR_OFFSET FXSAVE_SIZE 17 18 #define XSAVE_YMM_SIZE 256 19 #define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET) 20 21 /* Supported features which support lazy state saving */ 22 #define XSTATE_LAZY (XSTATE_FP | XSTATE_SSE | XSTATE_YMM \ 23 | XSTATE_OPMASK | XSTATE_ZMM_Hi256 | XSTATE_Hi16_ZMM) 24 25 /* Supported features which require eager state saving */ 26 #define XSTATE_EAGER (XSTATE_BNDREGS | XSTATE_BNDCSR) 27 28 /* All currently supported features */ 29 #define XCNTXT_MASK (XSTATE_LAZY | XSTATE_EAGER) 30 31 #ifdef CONFIG_X86_64 32 #define REX_PREFIX "0x48, " 33 #else 34 #define REX_PREFIX 35 #endif 36 37 extern unsigned int xstate_size; 38 extern u64 xfeatures_mask; 39 extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS]; 40 41 extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask); 42 43 void *get_xsave_addr(struct xregs_state *xsave, int xstate); 44 const void *get_xsave_field_ptr(int xstate_field); 45 46 #endif 47