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- /* 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
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