61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
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#ifndef __ASM_X86_XSAVE_H
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#define __ASM_X86_XSAVE_H
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#include <linux/types.h>
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#include <asm/processor.h>
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#include <linux/uaccess.h>
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/* Bit 63 of XCR0 is reserved for future expansion */
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#define XFEATURE_MASK_EXTEND (~(XFEATURE_MASK_FPSSE | (1ULL << 63)))
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#define XSTATE_CPUID 0x0000000d
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#define FXSAVE_SIZE 512
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#define XSAVE_HDR_SIZE 64
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#define XSAVE_HDR_OFFSET FXSAVE_SIZE
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#define XSAVE_YMM_SIZE 256
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#define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET)
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/* Supervisor features */
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#define XFEATURE_MASK_SUPERVISOR (XFEATURE_MASK_PT)
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/* Supported features which support lazy state saving */
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#define XFEATURE_MASK_LAZY (XFEATURE_MASK_FP | \
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XFEATURE_MASK_SSE | \
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XFEATURE_MASK_YMM | \
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XFEATURE_MASK_OPMASK | \
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XFEATURE_MASK_ZMM_Hi256 | \
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XFEATURE_MASK_Hi16_ZMM)
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/* Supported features which require eager state saving */
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#define XFEATURE_MASK_EAGER (XFEATURE_MASK_BNDREGS | \
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XFEATURE_MASK_BNDCSR | \
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XFEATURE_MASK_PKRU)
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/* All currently supported features */
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#define XCNTXT_MASK (XFEATURE_MASK_LAZY | XFEATURE_MASK_EAGER)
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#ifdef CONFIG_X86_64
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#define REX_PREFIX "0x48, "
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#else
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#define REX_PREFIX
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#endif
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extern u64 xfeatures_mask;
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extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
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extern void __init update_regset_xstate_info(unsigned int size,
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u64 xstate_mask);
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void fpu__xstate_clear_all_cpu_caps(void);
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void *get_xsave_addr(struct xregs_state *xsave, int xstate);
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const void *get_xsave_field_ptr(int xstate_field);
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int using_compacted_format(void);
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int copyout_from_xsaves(unsigned int pos, unsigned int count, void *kbuf,
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void __user *ubuf, struct xregs_state *xsave);
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int copyin_to_xsaves(const void *kbuf, const void __user *ubuf,
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struct xregs_state *xsave);
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#endif
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