tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1! SPDX-License-Identifier: GPL-2.0
2! Copyright (C) 2012 by Imagination Technologies Ltd.
3!
4! 64-bit unsigned compare routine.
5!
6
7 .text
8 .global ___ucmpdi2
9 .type ___ucmpdi2,function
10
11! low high
12! u64 a (D0Ar2, D1Ar1)
13! u64 b (D0Ar4, D1Ar3)
14___ucmpdi2:
15 ! start at 1 (equal) and conditionally increment or decrement
16 MOV D0Re0,#1
17
18 ! high words
19 CMP D1Ar1,D1Ar3
20 ! or if equal, low words
21 CMPEQ D0Ar2,D0Ar4
22
23 ! unsigned compare
24 SUBLO D0Re0,D0Re0,#1
25 ADDHI D0Re0,D0Re0,#1
26
27 MOV PC,D1RtP
28 .size ___ucmpdi2,.-___ucmpdi2