| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* insl_sw.S: input array of 4b words from device port with byte swapping |
| 2 | * |
| 3 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | |
| 13 | .text |
| 14 | .p2align 4 |
| 15 | |
| 16 | ############################################################################### |
| 17 | # |
| 18 | # void __insl_sw(unsigned int port, void *buf, int n) |
| 19 | # |
| 20 | ############################################################################### |
| 21 | .globl __insl_sw |
| 22 | .type __insl_sw,@function |
| 23 | __insl_sw: |
| 24 | subi.p gr9,#1,gr9 |
| 25 | setlos #1,gr4 |
| 26 | 0: |
| 27 | ldi.p @(gr8,#0),gr5 ; get 0xAABBCCDD |
| 28 | subicc gr10,#1,gr10,icc0 |
| 29 | |
| 30 | stbu.p gr5,@(gr9,gr4) ; write 0xDD |
| 31 | srli gr5,#8,gr5 |
| 32 | stbu.p gr5,@(gr9,gr4) ; write 0xCC |
| 33 | srli gr5,#8,gr5 |
| 34 | stbu.p gr5,@(gr9,gr4) ; write 0xBB |
| 35 | srli gr5,#8,gr5 |
| 36 | stbu.p gr5,@(gr9,gr4) ; write 0xAA |
| 37 | bhi icc0,#2,0b |
| 38 | bralr |
| 39 | |
| 40 | .size __insl_sw, .-__insl_sw |