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/*
* QEMU TILE-Gx helpers
*
* Copyright (c) 2015 Chen Gang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/lgpl-2.1.html>
*/
#include "cpu.h"
#include "qemu-common.h"
#include "exec/helper-proto.h"
/* Broadcast a value to all elements of a vector. */
#define V1(X) (((X) & 0xff) * 0x0101010101010101ull)
#define V2(X) (((X) & 0xffff) * 0x0001000100010001ull)
uint64_t helper_v1shl(uint64_t a, uint64_t b)
{
uint64_t m;
b &= 7;
m = V1(0xff >> b);
return (a & m) << b;
}
uint64_t helper_v2shl(uint64_t a, uint64_t b)
{
uint64_t m;
b &= 15;
m = V2(0xffff >> b);
return (a & m) << b;
}
uint64_t helper_v1shru(uint64_t a, uint64_t b)
{
uint64_t m;
b &= 7;
m = V1(0xff << b);
return (a & m) >> b;
}
uint64_t helper_v2shru(uint64_t a, uint64_t b)
{
uint64_t m;
b &= 15;
m = V2(0xffff << b);
return (a & m) >> b;
}
uint64_t helper_v1shrs(uint64_t a, uint64_t b)
{
uint64_t r = 0;
int i;
b &= 7;
for (i = 0; i < 64; i += 8) {
r = deposit64(r, i, 8, sextract64(a, i + b, 8 - b));
}
return r;
}
uint64_t helper_v2shrs(uint64_t a, uint64_t b)
{
uint64_t r = 0;
int i;
b &= 15;
for (i = 0; i < 64; i += 16) {
r = deposit64(r, i, 16, sextract64(a, i + b, 16 - b));
}
return r;
}
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