1/* MN10300 64-bit arithmetic left shift 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11#include <asm/cache.h> 12 13 .text 14 .balign L1_CACHE_BYTES 15 16############################################################################### 17# 18# unsigned long long __ashldi3(unsigned long long value [D1:D0], 19# unsigned by [(12,SP)]) 20# 21############################################################################### 22 .globl __ashldi3 23 .type __ashldi3,@function 24__ashldi3: 25 mov (12,sp),a0 26 and +63,a0 27 beq __ashldi3_zero 28 29 cmp +31,a0 30 bhi __ashldi3_32plus 31 32 # the count is in the range 1-31 33 asl a0,d1 34 35 mov +32,a1 36 sub a0,a1,a1 # a1 = 32 - count 37 lsr a1,d0,a1 # get overflow from LSW -> MSW 38 39 or_asl a1,d1,a0,d0 # insert overflow into MSW and 40 # shift the LSW 41 rets 42 43 .balign L1_CACHE_BYTES 44 # the count is in the range 32-63 45__ashldi3_32plus: 46 asl a0,d0,d1 47 clr d0 48__ashldi3_zero: 49 rets 50 51 .size __ashldi3, .-__ashldi3 52