BF32_GET
((BF32_GET(x, low, len) + (bias)) << (shift))
#define SA_HDR_LAYOUT_NUM(hdr) BF32_GET(hdr->sa_layout_info, 0, 10)
#define SA_ATTR_BSWAP(x) BF32_GET(x, 16, 8)
#define SA_ATTR_LENGTH(x) BF32_GET(x, 24, 16)
#define SA_ATTR_NUM(x) BF32_GET(x, 0, 16)