linux-sgx-trts-modified/psw/urts/linux/read_xcr0.h

/*
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#ifndef _READ_XCR0_H_
#define _READ_XCR0_H_

static inline uint64_t xgetbv(uint32_t index)
{
    uint32_t eax, edx;

    asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */
                 : "=a" (eax), "=d" (edx)
                 : "c" (index));
    return eax + ((uint64_t)edx << 32);
}

static inline uint64_t read_xcr0()
{
    return xgetbv(0);
}

#endif