xsavecintrin.h File Reference

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Macros
#define	__DEFAULT_FN_ATTRS   __attribute__((__always_inline__, __nodebug__, __target__("xsavec")))

Functions
static __inline__ void __DEFAULT_FN_ATTRS	_xsavec (void *__p, unsigned long long __m)
	Performs a full or partial save of processor state to the memory at __p.

Macro Definition Documentation

__DEFAULT_FN_ATTRS

#define __DEFAULT_FN_ATTRS   __attribute__((__always_inline__, __nodebug__, __target__("xsavec")))

Definition at line 18 of file xsavecintrin.h.

Function Documentation

_xsavec()

static __inline__ void __DEFAULT_FN_ATTRS _xsavec ( void *  __p, unsigned long long  __m  )

static

Performs a full or partial save of processor state to the memory at __p.

The exact state saved depends on the 64-bit mask __m and processor control register XCR0.

mask[62:0] := __m[62:0] AND XCR0[62:0]
FOR i := 0 TO 62
  IF mask[i] == 1
    CASE (i) OF
    0: save X87 FPU state
    1: save SSE state
    DEFAULT: __p.Ext_Save_Area[i] := ProcessorState[i]
  FI
ENDFOR
__p.Header.XSTATE_BV[62:0] := INIT_FUNCTION(mask[62:0])

This intrinsic corresponds to the XSAVEC instruction.

Parameters

__p	Pointer to the save area; must be 64-byte aligned.
__m	A 64-bit mask indicating what state should be saved.

Definition at line 46 of file xsavecintrin.h.

References __p.