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| author | Steve French <sfrench@us.ibm.com> | 2008-02-16 00:06:08 +0300 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2008-02-16 00:06:08 +0300 |
| commit | 0a3abcf75bf391fec4e32356ab5ddb8f5d2e6b41 (patch) | |
| tree | b80b1d344ec24cad28b057ef803cebac9434be01 /arch/mn10300/lib/__ashldi3.S | |
| parent | 70eff55d2d979cca700aa6906494f0c474f3f7ff (diff) | |
| parent | 101142c37be8e5af9b847860219217e6b958c739 (diff) | |
| download | linux-0a3abcf75bf391fec4e32356ab5ddb8f5d2e6b41.tar.xz | |
Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/mn10300/lib/__ashldi3.S')
| -rw-r--r-- | arch/mn10300/lib/__ashldi3.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/mn10300/lib/__ashldi3.S b/arch/mn10300/lib/__ashldi3.S new file mode 100644 index 000000000000..a51a9506f00c --- /dev/null +++ b/arch/mn10300/lib/__ashldi3.S @@ -0,0 +1,51 @@ +/* MN10300 64-bit arithmetic left shift + * + * Copyright (C) 2007 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 Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <asm/cache.h> + + .text + .balign L1_CACHE_BYTES + +############################################################################### +# +# unsigned long long __ashldi3(unsigned long long value [D1:D0], +# unsigned by [(12,SP)]) +# +############################################################################### + .globl __ashldi3 + .type __ashldi3,@function +__ashldi3: + mov (12,sp),a0 + and +63,a0 + beq __ashldi3_zero + + cmp +31,a0 + bhi __ashldi3_32plus + + # the count is in the range 1-31 + asl a0,d1 + + mov +32,a1 + sub a0,a1,a1 # a1 = 32 - count + lsr a1,d0,a1 # get overflow from LSW -> MSW + + or_asl a1,d1,a0,d0 # insert overflow into MSW and + # shift the LSW + rets + + .balign L1_CACHE_BYTES + # the count is in the range 32-63 +__ashldi3_32plus: + asl a0,d0,d1 + clr d0 +__ashldi3_zero: + rets + + .size __ashldi3, .-__ashldi3 |