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| author | David Howells <dhowells@redhat.com> | 2008-07-04 18:59:47 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-04 19:40:07 +0200 |
| commit | fc26361ef0fbcad0406475fc6006fa4f09e60dce (patch) | |
| tree | 26c8b01954156e5fae34acb281093cc815e56edc /arch/mn10300/lib/__ucmpdi2.S | |
| parent | mn10300: export certain arch symbols required to build allmodconfig (diff) | |
| download | linux-fc26361ef0fbcad0406475fc6006fa4f09e60dce.tar.xz linux-fc26361ef0fbcad0406475fc6006fa4f09e60dce.zip | |
mn10300: provide __ucmpdi2() for MN10300
Provide __ucmpdi2() for MN10300 so that allmodconfig can be built.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mn10300/lib/__ucmpdi2.S')
| -rw-r--r-- | arch/mn10300/lib/__ucmpdi2.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mn10300/lib/__ucmpdi2.S b/arch/mn10300/lib/__ucmpdi2.S new file mode 100644 index 000000000000..60dcbdfe386c --- /dev/null +++ b/arch/mn10300/lib/__ucmpdi2.S @@ -0,0 +1,43 @@ +/* __ucmpdi2.S: 64-bit unsigned compare + * + * Copyright (C) 2008 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 [D0:D1], +# unsigned long long b [(SP,12),(SP,16)]) +# +# - returns 0, 1, or 2 as a <, =, > b respectively. +# +############################################################################### + .globl __ucmpdi2 + .type __ucmpdi2,@function +__ucmpdi2: + mov (12,sp),a0 # b.lsw + mov (16,sp),a1 # b.msw + + sub a0,d0 + subc a1,d1 # may clear Z, never sets it + bne __ucmpdi2_differ # a.msw != b.msw + mov +1,d0 + rets + +__ucmpdi2_differ: + # C flag is set if LE, clear if GE + subc d0,d0 # -1 if LE, 0 if GE + add +1,d0 # 0 if LE, 1 if GE + add d0,d0 # 0 if LE, 2 if GE + rets + + .size __ucmpdi2, .-__ucmpdi2 |