blob: ec1e72970834f722392d7f6f57a8f1ea9e8e81ef (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
# High speed ASM memcmp implementation by Lameguy64
#
# Part of PSn00bSDK
.set noreorder
.section .text
# Arguments:
# a0 - buffer 1 address
# a1 - buffer 2 address
# a2 - bytes to compare
.global memcmp
.type memcmp, @function
memcmp:
blez $a2, .Lexit
addi $a2, -1
lbu $v0, 0($a0)
lbu $v1, 0($a1)
addiu $a0, 1
bne $v0, $v1, .Lmismatch
addiu $a1, 1
b memcmp
nop
.Lmismatch:
jr $ra
sub $v0, $v1
.Lexit:
jr $ra
move $v0, $0
|
