CBitFieldMaskBit62 = 0x2
	CBitFieldMaskBit63 = 0x1
)

type SockaddrStorage struct {
	Family uint16
	Data   [122]byte
	_      uint32
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint32
}

type Statfs_t struct {
	Type    int32
	Bsize   int32
	Frsize  int32
	_       [4]byte
	Blocks  uint64
	Bfree   uint64
	Files   uint64

		fn:         fn,
		f:          f,
		vars:       vars,
		idx:        idx,
		stkptrsize: stkptrsize,
	}

	// Significant sources of allocation are kept in the ssa.Cache
	// and reused. Surprisingly, the bit vectors themselves aren't
	// a major source of allocation, but the liveness maps are.
	if lc, _ := f.Cache.Liveness.(*livenessFuncCache); lc == nil {
		// Prep the cache so liveness can fill it later.

// is used.
var karatsubaThreshold = 40 // computed by calibrate_test.go

// karatsuba multiplies x and y and leaves the result in z.
// Both x and y must have the same length n and n must be a
// power of 2. The result vector z must have len(z) >= 6*n.
// The (non-normalized) result is placed in z[0 : 2*n].
func karatsuba(z, x, y nat) {
	n := len(y)

	// Switch to basic multiplication if numbers are odd or small.

	CBitFieldMaskBit63 = 0x8000000000000000
)

type SockaddrStorage struct {
	Family uint16
	Data   [122]byte
	_      uint32
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint32
}

type Statfs_t struct {
	Type    int32
	Bsize   int32
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64

	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
	Frsize  int64
	Blocks  uint64
	Bfree   uint64
	Files   uint64
	Ffree   uint64

// For {en,de}cryptBlockAsm
#define BLK_INP    R3
#define BLK_OUT    R4
#define BLK_KEY    R5
#define BLK_ROUNDS R6
#define BLK_IDX    R7

DATA ·rcon+0x00(SB)/8, $0x0f0e0d0c0b0a0908 // Permute for vector doubleword endian swap
DATA ·rcon+0x08(SB)/8, $0x0706050403020100
DATA ·rcon+0x10(SB)/8, $0x0100000001000000 // RCON
DATA ·rcon+0x18(SB)/8, $0x0100000001000000 // RCON
DATA ·rcon+0x20(SB)/8, $0x1b0000001b000000

		//	BC 16,0,loop         branch ctr
		// For this purpose, VS32 and VS33 are treated as
		// scratch registers. Since regalloc does not
		// track vector registers, even if it could be marked
		// as clobbered it would have no effect.
		// TODO: If vector registers are managed by regalloc
		// mark these as clobbered.
		//
		// Bytes not moved by this loop are moved
		// with a combination of the following instructions,

// license that can be found in the LICENSE file.

//go:build !math_big_pure_go && (ppc64 || ppc64le)

#include "textflag.h"

// This file provides fast assembly versions for the elementary
// arithmetic operations on vectors implemented in arith.go.

// func addVV(z, y, y []Word) (c Word)
// z[i] = x[i] + y[i] for all i, carrying
TEXT ·addVV(SB), NOSPLIT, $0
	MOVD  z_len+8(FP), R7   // R7 = z_len
	MOVD  x+24(FP), R8      // R8 = x[]