diff options
Diffstat (limited to 'qemu/target-tilegx/simd_helper.c')
| -rw-r--r-- | qemu/target-tilegx/simd_helper.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/qemu/target-tilegx/simd_helper.c b/qemu/target-tilegx/simd_helper.c new file mode 100644 index 000000000..2d40ddb63 --- /dev/null +++ b/qemu/target-tilegx/simd_helper.c @@ -0,0 +1,166 @@ +/* + * 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 "qemu/osdep.h" +#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_v1multu(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + for (i = 0; i < 64; i += 8) { + unsigned ae = extract64(a, i, 8); + unsigned be = extract64(b, i, 8); + r = deposit64(r, i, 8, ae * be); + } + return r; +} + +uint64_t helper_v2mults(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + /* While the instruction talks about signed inputs, with a + truncated result the sign of the inputs doesn't matter. */ + for (i = 0; i < 64; i += 16) { + unsigned ae = extract64(a, i, 16); + unsigned be = extract64(b, i, 16); + r = deposit64(r, i, 16, ae * be); + } + return r; +} + +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; +} + +uint64_t helper_v1int_h(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + for (i = 0; i < 32; i += 8) { + r = deposit64(r, 2 * i + 8, 8, extract64(a, i + 32, 8)); + r = deposit64(r, 2 * i, 8, extract64(b, i + 32, 8)); + } + return r; +} + +uint64_t helper_v1int_l(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + for (i = 0; i < 32; i += 8) { + r = deposit64(r, 2 * i + 8, 8, extract64(a, i, 8)); + r = deposit64(r, 2 * i, 8, extract64(b, i, 8)); + } + return r; +} + +uint64_t helper_v2int_h(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + for (i = 0; i < 32; i += 16) { + r = deposit64(r, 2 * i + 16, 16, extract64(a, i + 32, 16)); + r = deposit64(r, 2 * i, 16, extract64(b, i + 32, 16)); + } + return r; +} + +uint64_t helper_v2int_l(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + for (i = 0; i < 32; i += 16) { + r = deposit64(r, 2 * i + 16, 16, extract64(a, i, 16)); + r = deposit64(r, 2 * i, 16, extract64(b, i, 16)); + } + return r; +} |