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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
| commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
| tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/frv/lib/insl_sw.S | |
Initial import
Diffstat (limited to 'arch/frv/lib/insl_sw.S')
| -rw-r--r-- | arch/frv/lib/insl_sw.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/frv/lib/insl_sw.S b/arch/frv/lib/insl_sw.S new file mode 100644 index 000000000..9b5aa95d0 --- /dev/null +++ b/arch/frv/lib/insl_sw.S @@ -0,0 +1,40 @@ +/* insl_sw.S: input array of 4b words from device port with byte swapping + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void __insl_sw(unsigned int port, void *buf, int n) +# +############################################################################### + .globl __insl_sw + .type __insl_sw,@function +__insl_sw: + subi.p gr9,#1,gr9 + setlos #1,gr4 +0: + ldi.p @(gr8,#0),gr5 ; get 0xAABBCCDD + subicc gr10,#1,gr10,icc0 + + stbu.p gr5,@(gr9,gr4) ; write 0xDD + srli gr5,#8,gr5 + stbu.p gr5,@(gr9,gr4) ; write 0xCC + srli gr5,#8,gr5 + stbu.p gr5,@(gr9,gr4) ; write 0xBB + srli gr5,#8,gr5 + stbu.p gr5,@(gr9,gr4) ; write 0xAA + bhi icc0,#2,0b + bralr + + .size __insl_sw, .-__insl_sw |