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// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2015, Linaro Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
union dword {
unsigned long long dw;
unsigned long w[2];
};
long long __aeabi_llsl(long long a, int shift);
long long __aeabi_llsl(long long a, int shift)
{
union dword dword = { .dw = a };
unsigned long hi = dword.w[1];
unsigned long lo = dword.w[0];
if (shift >= 32) {
hi = lo << (shift - 32);
lo = 0;
} else if (shift > 0) {
hi = (hi << shift) | (lo >> (32 - shift));
lo = lo << shift;
}
dword.w[1] = hi;
dword.w[0] = lo;
return dword.dw;
}
long long __aeabi_llsr(long long a, int shift);
long long __aeabi_llsr(long long a, int shift)
{
union dword dword = { .dw = a };
unsigned long hi = dword.w[1];
unsigned long lo = dword.w[0];
if (shift >= 32) {
lo = hi >> (shift - 32);
hi = 0;
} else if (shift > 0) {
lo = (lo >> shift) | (hi << (32 - shift));
hi = hi >> shift;
}
dword.w[1] = hi;
dword.w[0] = lo;
return dword.dw;
}
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