db432672dc
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
|
|
* Generic vector operation descriptor
|
|
*
|
|
* Copyright (c) 2018 Linaro
|
|
*
|
|
* 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 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/>.
|
|
*/
|
|
|
|
/* ??? These bit widths are set for ARM SVE, maxing out at 256 byte vectors. */
|
|
#define SIMD_OPRSZ_SHIFT 0
|
|
#define SIMD_OPRSZ_BITS 5
|
|
|
|
#define SIMD_MAXSZ_SHIFT (SIMD_OPRSZ_SHIFT + SIMD_OPRSZ_BITS)
|
|
#define SIMD_MAXSZ_BITS 5
|
|
|
|
#define SIMD_DATA_SHIFT (SIMD_MAXSZ_SHIFT + SIMD_MAXSZ_BITS)
|
|
#define SIMD_DATA_BITS (32 - SIMD_DATA_SHIFT)
|
|
|
|
/* Create a descriptor from components. */
|
|
uint32_t simd_desc(uint32_t oprsz, uint32_t maxsz, int32_t data);
|
|
|
|
/* Extract the operation size from a descriptor. */
|
|
static inline intptr_t simd_oprsz(uint32_t desc)
|
|
{
|
|
return (extract32(desc, SIMD_OPRSZ_SHIFT, SIMD_OPRSZ_BITS) + 1) * 8;
|
|
}
|
|
|
|
/* Extract the max vector size from a descriptor. */
|
|
static inline intptr_t simd_maxsz(uint32_t desc)
|
|
{
|
|
return (extract32(desc, SIMD_MAXSZ_SHIFT, SIMD_MAXSZ_BITS) + 1) * 8;
|
|
}
|
|
|
|
/* Extract the operation-specific data from a descriptor. */
|
|
static inline int32_t simd_data(uint32_t desc)
|
|
{
|
|
return sextract32(desc, SIMD_DATA_SHIFT, SIMD_DATA_BITS);
|
|
}
|