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1 | /* |
2 | * Copyright 2007 Analog Devices Inc. | |
3 | * | |
de450838 | 4 | * Licensed under the Clear BSD license or the GPL-2 (or later) |
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5 | */ |
6 | ||
1394f032 BW |
7 | .align 2 |
8 | .global ___umulsi3_highpart; | |
9 | .type ___umulsi3_highpart, STT_FUNC; | |
10 | ||
11 | #ifdef CONFIG_ARITHMETIC_OPS_L1 | |
12 | .section .l1.text | |
13 | #else | |
14 | .text | |
15 | #endif | |
16 | ||
17 | ___umulsi3_highpart: | |
18 | R2 = R1.H * R0.H, R3 = R1.L * R0.H (FU); | |
19 | R0 = R1.L * R0.L, R1 = R1.H * R0.L (FU); | |
20 | R0 >>= 16; | |
21 | /* Unsigned multiplication has the nice property that we can | |
22 | ignore carry on this first addition. */ | |
23 | R0 = R0 + R3; | |
24 | R0 = R0 + R1; | |
25 | cc = ac0; | |
26 | R1 = cc; | |
27 | R1 = PACK(R1.l,R0.h); | |
28 | R0 = R1 + R2; | |
29 | RTS; | |
51be24c3 MF |
30 | |
31 | .size ___umulsi3_highpart, .-___umulsi3_highpart |