diff options
Diffstat (limited to 'arch/frv/lib/insl_ns.S')
| -rw-r--r-- | arch/frv/lib/insl_ns.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/frv/lib/insl_ns.S b/arch/frv/lib/insl_ns.S new file mode 100644 index 000000000000..d1658425a9f7 --- /dev/null +++ b/arch/frv/lib/insl_ns.S @@ -0,0 +1,52 @@ +/* insl_ns.S: input array of 4b words from device port without 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_ns(unsigned int port, void *buf, int n) +# +############################################################################### + .globl __insl_ns + .type __insl_ns,@function +__insl_ns: + andicc.p gr9,#3,gr0,icc0 + setlos #4,gr4 + bne icc0,#0,__insl_ns_misaligned + subi gr9,#4,gr9 +0: + ldi.p @(gr8,#0),gr5 + subicc gr10,#1,gr10,icc0 + stu.p gr5,@(gr9,gr4) + bhi icc0,#2,0b + bralr + +__insl_ns_misaligned: + subi.p gr9,#1,gr9 + setlos #1,gr4 +0: + ldi @(gr8,#0),gr5 + + srli gr5,#24,gr6 + stbu.p gr6,@(gr9,gr4) + srli gr5,#16,gr6 + stbu.p gr6,@(gr9,gr4) + srli gr5,#8,gr6 + stbu.p gr6,@(gr9,gr4) + subicc gr10,#1,gr10,icc0 + stbu.p gr5,@(gr9,gr4) + bhi icc0,#2,0b + bralr + + .size __insl_ns, .-__insl_ns |