diff options
| author | David Howells | 2006-01-08 01:01:19 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2006-01-08 20:13:36 -0800 |
| commit | 402344012ebe696d9353bbf056889ddaaec83079 (patch) | |
| tree | 4a4072bdfe80be4c565d01a9188ef5da3a31e19a /arch/frv/lib/__ucmpdi2.S | |
| parent | 8369ce4cfe18decc3ea0afcf91e67c665479c78e (diff) | |
[PATCH] frv: implement and export various things required by modules
Export a number of features required to build all the modules. It also
implements the following simple features:
(*) csum_partial_copy_from_user() for MMU as well as no-MMU.
(*) __ucmpdi2().
so that they can be exported too.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/frv/lib/__ucmpdi2.S')
| -rw-r--r-- | arch/frv/lib/__ucmpdi2.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/frv/lib/__ucmpdi2.S b/arch/frv/lib/__ucmpdi2.S new file mode 100644 index 000000000000..d892f16ffaa9 --- /dev/null +++ b/arch/frv/lib/__ucmpdi2.S @@ -0,0 +1,45 @@ +/* __ucmpdi2.S: 64-bit unsigned compare + * + * Copyright (C) 2006 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 + +############################################################################### +# +# int __ucmpdi2(unsigned long long a [GR8:GR9], +# unsigned long long b [GR10:GR11]) +# +# - returns 0, 1, or 2 as a <, =, > b respectively. +# +############################################################################### + .globl __ucmpdi2 + .type __ucmpdi2,@function +__ucmpdi2: + or.p gr8,gr0,gr4 + subcc gr8,gr10,gr0,icc0 + setlos.p #0,gr8 + bclr icc0,#2 ; a.msw < b.msw + + setlos.p #2,gr8 + bhilr icc0,#0 ; a.msw > b.msw + + subcc.p gr9,gr11,gr0,icc1 + setlos #0,gr8 + setlos.p #2,gr9 + setlos #1,gr7 + cknc icc1,cc6 + cor.p gr9,gr0,gr8, cc6,#1 + cckls icc1,cc4, cc6,#1 + andcr cc6,cc4,cc4 + cor gr7,gr0,gr8, cc4,#1 + bralr + .size __ucmpdi2, .-__ucmpdi2 |