CBitFieldMaskBit63 = 0x8000000000000000
)

type SockaddrStorage struct {
	Family uint16
	Data   [118]byte
	_      uint64
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint64
}

type Statfs_t struct {
	Type    int64
	Bsize   int64
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64

type ofb struct {
	b       Block
	cipher  []byte
	out     []byte
	outUsed int
}

// NewOFB returns a [Stream] that encrypts or decrypts using the block cipher b
// in output feedback mode. The initialization vector iv's length must be equal
// to b's block size.
func NewOFB(b Block, iv []byte) Stream {
	blockSize := b.BlockSize()
	if len(iv) != blockSize {
		panic("cipher.NewOFB: IV length must equal block size")
	}

	// Create a struct callbackArgs on our stack.
	MOVD	$cbargs-(18*8+callbackArgs__size)(SP), R13
	MOVD	R12, callbackArgs_index(R13)	// callback index
	MOVD	R14, R0
	MOVD	R0, callbackArgs_args(R13)		// address of args vector
	MOVD	$0, R0
	MOVD	R0, callbackArgs_result(R13)	// result

	// Call cgocallback, which will call callbackWrap(frame).

// equivalent function from the corresponding s390x
// instruction for vector multiply high, low, and add,
// since there aren't exact equivalent instructions.
// The corresponding s390x instructions appear in the
// comments.
// Implementation for big endian would have to be
// investigated, I think it would be different.
//
//
// Vector multiply word
//
//	VMLF  x0, x1, out_low
//	VMLHF x0, x1, out_hi

	// Create a struct callbackArgs on our stack.
	MOVW	R12, (16+callbackArgs_index)(R13)	// callback index
	MOVW	$(16+callbackArgs__size+4*9)(R13), R0
	MOVW	R0, (16+callbackArgs_args)(R13)		// address of args vector
	MOVW	$0, R0
	MOVW	R0, (16+callbackArgs_result)(R13)	// result

	// Prepare for entry to Go.
	BL	runtime·load_g(SB)

	// Call cgocallback, which will call callbackWrap(frame).
	MOVW	$0, R0

	KLMD	R2, R8                 // b93f0028
	KIMD	R0, R4                 // b93e0004
	KDSA	R0, R8                 // b93a0008
	KMA	R2, R6, R4              // b9296024
	KMCTR   R2, R6, R4              // b92d6024

	// vector add and sub instructions
	VAB	V3, V4, V4              // e743400000f3
	VAH	V3, V4, V4              // e743400010f3
	VAF	V3, V4, V4              // e743400020f3
	VAG	V3, V4, V4              // e743400030f3

func mulByLog10Log2(x int) int {
	// log(10)/log(2) ≈ 3.32192809489 ≈ 108853 / 2^15
	return (x * 108853) >> 15
}

// computeBounds returns a floating-point vector (l, c, u)×2^e2
// where the mantissas are 55-bit (or 26-bit) integers, describing the interval
// represented by the input float64 or float32.

				p := unsafe.Pointer(s.base() + uintptr(spf.special.offset))
				dumpfinalizer(p, spf.fn, spf.fint, spf.ot)
			}
		}
	}

	// Finalizer queue
	iterate_finq(finq_callback)
}

// Bit vector of free marks.
// Needs to be as big as the largest number of objects per span.
var freemark [_PageSize / 8]bool

func dumpobjs() {
	// To protect mheap_.allspans.
	assertWorldStopped()

binary is setuid/setgid or executed with setuid/setgid-like properties, in order
to prevent dangerous behaviors. On Linux this is determined by checking for the
AT_SECURE flag in the auxiliary vector, on the BSDs and Solaris/Illumos it is
determined by checking the issetugid syscall, and on AIX it is determined by
checking if the uid/gid match the effective uid/gid.

		} else if (val>>24)&0x3b == 0x39 {
			// Mach-O ARM64_RELOC_PAGEOFF12
			// patch ldr/str(b/h/w/d/q) (integer or vector) instructions, which have different scaling factors.
			// Mach-O uses same relocation type for them.
			shift := uint32(val) >> 30
			if shift == 0 && (val>>20)&0x048 == 0x048 { // 128-bit vector load
				shift = 4
			}
			t := ldr.SymAddr(rs) + r.Add() - ((ldr.SymValue(s) + int64(r.Off())) &^ 0xfff)