adler32.s

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· S 代码 · 共 86 行

.file	1 "adler32.c"
.section .mdebug.abi32
.previous
.section	.text.av_adler32_update,"ax",@progbits
.align	2
.align	5
.globl	av_adler32_update
.ent	av_adler32_update
.type	av_adler32_update, @function
av_adler32_update:
.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
.mask	0x00000000,0
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

move	$11,$6
move	$8,$5
srl	$10,$4,16
beq	$6,$0,$L3
andi	$9,$4,0xffff

$L12:
sltu	$2,$11,5
bne	$2,$0,$L5
nop

$L13:
bltz	$10,$L5
nop

lbu	$2,0($8)
lbu	$3,1($8)
addu	$2,$2,$9
lbu	$4,2($8)
addu	$3,$2,$3
lbu	$5,3($8)
addu	$2,$2,$10
addu	$4,$3,$4
addu	$2,$2,$3
addiu	$11,$11,-4
addu	$9,$4,$5
addu	$2,$2,$4
sltu	$3,$11,5
addu	$10,$2,$9
beq	$3,$0,$L13
addiu	$8,$8,4

$L5:
lbu	$4,0($8)
li	$2,-2147024896			# 0xffffffff80070000
addu	$4,$4,$9
addu	$7,$4,$10
ori	$2,$2,0x8071
multu	$7,$2
addiu	$11,$11,-1
mfhi	$3
multu	$4,$2
srl	$10,$3,15
mfhi	$2
sll	$5,$10,4
srl	$9,$2,15
sll	$6,$9,4
sll	$3,$9,16
sll	$2,$10,16
subu	$3,$3,$6
subu	$2,$2,$5
addu	$3,$3,$9
addu	$2,$2,$10
subu	$9,$4,$3
beq	$11,$0,$L3
subu	$10,$7,$2

j	$L12
addiu	$8,$8,1

$L3:
sll	$2,$10,16
j	$31
or	$2,$2,$9

.set	macro
.set	reorder
.end	av_adler32_update
.ident	"GCC: (GNU) 4.1.2"