| 1 | /* |
| 2 | * Coldfire muldi3 assembly verion |
| 3 | * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. |
| 4 | * Jason Jin Jason.Jin@freescale.com |
| 5 | * Shrek Wu B16972@freescale.com |
| 6 | */ |
| 7 | |
| 8 | #include <linux/linkage.h> |
| 9 | .globl __muldi3 |
| 10 | |
| 11 | ENTRY(__muldi3) |
| 12 | linkw %fp,#0 |
| 13 | lea %sp@(-32),%sp |
| 14 | moveml %d2-%d7/%a2-%a3,%sp@ |
| 15 | moveal %fp@(8), %a2 |
| 16 | moveal %fp@(12), %a3 |
| 17 | moveal %fp@(16), %a0 |
| 18 | moveal %fp@(20),%a1 |
| 19 | movel %a3,%d2 |
| 20 | andil #65535,%d2 |
| 21 | movel %a3,%d3 |
| 22 | clrw %d3 |
| 23 | swap %d3 |
| 24 | movel %a1,%d0 |
| 25 | andil #65535,%d0 |
| 26 | movel %a1,%d1 |
| 27 | clrw %d1 |
| 28 | swap %d1 |
| 29 | movel %d2,%d7 |
| 30 | mulsl %d0,%d7 |
| 31 | movel %d2,%d4 |
| 32 | mulsl %d1,%d4 |
| 33 | movel %d3,%d2 |
| 34 | mulsl %d0,%d2 |
| 35 | mulsl %d1,%d3 |
| 36 | movel %d7,%d0 |
| 37 | clrw %d0 |
| 38 | swap %d0 |
| 39 | addl %d0,%d4 |
| 40 | addl %d2,%d4 |
| 41 | cmpl %d4,%d2 |
| 42 | blss 1f |
| 43 | addil #65536,%d3 |
| 44 | 1: |
| 45 | movel %d4,%d0 |
| 46 | clrw %d0 |
| 47 | swap %d0 |
| 48 | movel %d3,%d5 |
| 49 | addl %d0,%d5 |
| 50 | movew %d4,%d6 |
| 51 | swap %d6 |
| 52 | movew %d7,%d6 |
| 53 | movel %d5,%d0 |
| 54 | movel %d6,%d1 |
| 55 | movel %a3,%d2 |
| 56 | movel %a0,%d3 |
| 57 | mulsl %d3,%d2 |
| 58 | movel %a2,%d3 |
| 59 | movel %a1,%d4 |
| 60 | mulsl %d4,%d3 |
| 61 | addl %d3,%d2 |
| 62 | movel %d2,%d0 |
| 63 | addl %d5,%d0 |
| 64 | moveml %sp@, %d2-%d7/%a2-%a3 |
| 65 | lea %sp@(32),%sp |
| 66 | unlk %fp |
| 67 | rts |
| 68 | |
