From db432672dc50ed86dda17ac821b7eb07411a90af Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 15 Sep 2017 14:11:45 -0700 Subject: tcg: Add generic vector expanders MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- tcg/tcg-gvec-desc.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 tcg/tcg-gvec-desc.h (limited to 'tcg/tcg-gvec-desc.h') diff --git a/tcg/tcg-gvec-desc.h b/tcg/tcg-gvec-desc.h new file mode 100644 index 0000000000..3b4c2d9c69 --- /dev/null +++ b/tcg/tcg-gvec-desc.h @@ -0,0 +1,49 @@ +/* + * 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 . + */ + +/* ??? 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); +} -- cgit v1.2.1