TEXT ·Compare<ABIInternal>(SB),NOSPLIT,$0-56
	// R4 = a_base
	// R5 = a_len
	// R6 = a_cap (unused)
	// R7 = b_base (want in R6)
	// R8 = b_len (want in R7)
	// R9 = b_cap (unused)
	MOVV	R7, R6
	MOVV	R8, R7
	JMP	cmpbody<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT,$0-40
	// R4 = a_base
	// R5 = a_len
	// R6 = b_base
	// R7 = b_len
	JMP	cmpbody<>(SB)

// On entry:
// R5 length of a

#include "textflag.h"

TEXT ·Compare(SB),NOSPLIT,$0-56
	MOVV	a_base+0(FP), R3
	MOVV	b_base+24(FP), R4
	MOVV	a_len+8(FP), R1
	MOVV	b_len+32(FP), R2
	MOVV	$ret+48(FP), R9
	JMP	cmpbody<>(SB)

TEXT runtime·cmpstring(SB),NOSPLIT,$0-40
	MOVV	a_base+0(FP), R3
	MOVV	b_base+16(FP), R4
	MOVV	a_len+8(FP), R1
	MOVV	b_len+24(FP), R2
	MOVV	$ret+32(FP), R9
	JMP	cmpbody<>(SB)

// On entry:
// R1 length of a
// R2 length of b

#include "textflag.h"

TEXT ·Compare(SB),NOSPLIT|NOFRAME,$0-28
	MOVW	a_base+0(FP), R2
	MOVW	a_len+4(FP), R0
	MOVW	b_base+12(FP), R3
	MOVW	b_len+16(FP), R1
	ADD	$28, R13, R7
	B	cmpbody<>(SB)

TEXT runtime·cmpstring(SB),NOSPLIT|NOFRAME,$0-20
	MOVW	a_base+0(FP), R2
	MOVW	a_len+4(FP), R0
	MOVW	b_base+8(FP), R3
	MOVW	b_len+12(FP), R1
	ADD	$20, R13, R7
	B	cmpbody<>(SB)

// On entry:
// R0 is the length of a

	// R0 = a_base (want in R0)
	// R1 = a_len  (want in R1)
	// R2 = a_cap  (unused)
	// R3 = b_base (want in R2)
	// R4 = b_len  (want in R3)
	// R5 = b_cap  (unused)
	MOVD	R3, R2
	MOVD	R4, R3
	B	cmpbody<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-40
	// R0 = a_base
	// R1 = a_len
	// R2 = b_base
	// R3 = b_len
	B	cmpbody<>(SB)

// On entry:

        int clen = s.length();
        int blen = 2 * clen;
        byte[] b = new byte[blen];
        char[] c = new char[clen];
        s.getChars( 0, clen, c, 0 );
        for( int i = 0, j = 0; i < clen; i++ ) {
            b[j++] = (byte)(c[i] >>> 8);
            b[j++] = (byte)(c[i] >>> 0);
        }
        write( b, 0, blen );
    }

func ParseNetlinkMessage(b []byte) ([]NetlinkMessage, error) {
	var msgs []NetlinkMessage
	for len(b) >= NLMSG_HDRLEN {
		h, dbuf, dlen, err := netlinkMessageHeaderAndData(b)
		if err != nil {
			return nil, err
		}
		m := NetlinkMessage{Header: *h, Data: dbuf[:int(h.Len)-NLMSG_HDRLEN]}
		msgs = append(msgs, m)
		b = b[dlen:]
	}
	return msgs, nil
}

func mulDenom(z, x, y nat) nat {
	switch {
	case len(x) == 0 && len(y) == 0:
		return z.setWord(1)
	case len(x) == 0:
		return z.set(y)
	case len(y) == 0:
		return z.set(x)
	}
	return z.mul(x, y)
}

// scaleDenom sets z to the product x*f.
// If f == 0 (zero value of denominator), z is set to (a copy of) x.
func (z *Int) scaleDenom(x *Int, f nat) {
	if len(f) == 0 {
		z.Set(x)
		return
	}

	// X10 = a_base
	// X11 = a_len
	// X12 = a_cap (unused)
	// X13 = b_base (want in X12)
	// X14 = b_len (want in X13)
	// X15 = b_cap (unused)
	MOV	X13, X12
	MOV	X14, X13
	JMP	compare<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-40
	// X10 = a_base
	// X11 = a_len
	// X12 = b_base
	// X13 = b_len
	JMP	compare<>(SB)

// On entry:
// X10 points to start of a

#include "go_asm.h"
#include "textflag.h"

TEXT ·Index(SB),NOSPLIT,$0-56
	MOVD	a_base+0(FP), R0
	MOVD	a_len+8(FP), R1
	MOVD	b_base+24(FP), R2
	MOVD	b_len+32(FP), R3
	MOVD	$ret+48(FP), R9
	B	indexbody<>(SB)

TEXT ·IndexString(SB),NOSPLIT,$0-40
	MOVD	a_base+0(FP), R0
	MOVD	a_len+8(FP), R1
	MOVD	b_base+16(FP), R2
	MOVD	b_len+24(FP), R3
	MOVD	$ret+32(FP), R9
	B	indexbody<>(SB)

// input:
//   R0: haystack

#include "textflag.h"

TEXT ·Index(SB),NOSPLIT,$0-56
	MOVQ a_base+0(FP), DI
	MOVQ a_len+8(FP), DX
	MOVQ b_base+24(FP), R8
	MOVQ b_len+32(FP), AX
	MOVQ DI, R10
	LEAQ ret+48(FP), R11
	JMP  indexbody<>(SB)

TEXT ·IndexString(SB),NOSPLIT,$0-40
	MOVQ a_base+0(FP), DI
	MOVQ a_len+8(FP), DX
	MOVQ b_base+16(FP), R8
	MOVQ b_len+24(FP), AX
	MOVQ DI, R10
	LEAQ ret+32(FP), R11
	JMP  indexbody<>(SB)