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Commit | Line | Data |
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3402aac7 | 1 | #------------------------------------------------------------------------------\r |
1e57a462 | 2 | #\r |
3 | # Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
4 | #\r | |
4059386c | 5 | # SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1e57a462 | 6 | #\r |
7 | #------------------------------------------------------------------------------\r | |
8 | \r | |
903e3124 AB |
9 | #include <AsmMacroIoLib.h>\r |
10 | \r | |
1a0db791 | 11 | .syntax unified\r |
1e57a462 | 12 | \r |
903e3124 | 13 | ASM_FUNC(__udivsi3)\r |
1e57a462 | 14 | cmp r1, #0\r |
15 | cmpne r0, #0\r | |
16 | stmfd sp!, {r4, r5, r7, lr}\r | |
17 | add r7, sp, #8\r | |
18 | beq L2\r | |
19 | clz r2, r1\r | |
20 | clz r3, r0\r | |
21 | rsb r3, r3, r2\r | |
22 | cmp r3, #31\r | |
23 | bhi L2\r | |
1a0db791 | 24 | ldmfdeq sp!, {r4, r5, r7, pc}\r |
1e57a462 | 25 | add r5, r3, #1\r |
26 | rsb r3, r3, #31\r | |
27 | mov lr, #0\r | |
28 | mov r2, r0, asl r3\r | |
29 | mov ip, r0, lsr r5\r | |
30 | mov r4, lr\r | |
31 | b L8\r | |
32 | L9:\r | |
33 | mov r0, r2, lsr #31\r | |
34 | orr ip, r0, ip, asl #1\r | |
35 | orr r2, r3, lr\r | |
36 | rsb r3, ip, r1\r | |
37 | sub r3, r3, #1\r | |
38 | and r0, r1, r3, asr #31\r | |
39 | mov lr, r3, lsr #31\r | |
40 | rsb ip, r0, ip\r | |
41 | add r4, r4, #1\r | |
42 | L8:\r | |
43 | cmp r4, r5\r | |
44 | mov r3, r2, asl #1\r | |
45 | bne L9\r | |
46 | orr r0, r3, lr\r | |
47 | ldmfd sp!, {r4, r5, r7, pc}\r | |
48 | L2:\r | |
49 | mov r0, #0\r | |
50 | ldmfd sp!, {r4, r5, r7, pc}\r | |
51 | \r |