/* SPDX-License-Identifier: GPL-2.0 *//* * arch/alpha/lib/strcat.S * Contributed by Richard Henderson (rth@tamu.edu) * * Append a null-terminated string from SRC to DST. */#include <linux/export.h> 	.text 	.align 3	.globl strcat	.ent strcatstrcat:	.frame $30, 0, $26	.prologue 0 	mov	$16, $0		# set up return value 	/* Find the end of the string.  */ 	ldq_u   $1, 0($16)	# load first quadword (a0 may be misaligned)	lda     $2, -1	insqh   $2, $16, $2	andnot  $16, 7, $16	or      $2, $1, $1	cmpbge  $31, $1, $2	# bits set iff byte == 0	bne     $2, $found $loop:	ldq     $1, 8($16)	addq    $16, 8, $16	cmpbge  $31, $1, $2	beq     $2, $loop $found:	negq    $2, $3		# clear all but least set bit	and     $2, $3, $2 	and     $2, 0xf0, $3	# binary search for that set bit	and	$2, 0xcc, $4	and	$2, 0xaa, $5	cmovne	$3, 4, $3	cmovne	$4, 2, $4	cmovne	$5, 1, $5	addq	$3, $4, $3	addq	$16, $5, $16	addq	$16, $3, $16 	/* Now do the append.  */ 	mov	$26, $23	br	__stxcpy 	.end strcatEXPORT_SYMBOL(strcat);