| # |
| # Translation routines for the instructions of the xlrbr ISA extension |
| # (matching the draft encodings in the standard reserved encoding space for the |
| # unratified Zbr CRC32 bitmanip extension version 0.93). |
| # |
| # Copyright (c) 2026 Rivos Inc. |
| # |
| # SPDX-License-Identifier: GPL-2.0-or-later |
| |
| # Fields: |
| %rs1 15:5 |
| %rd 7:5 |
| |
| # Argument sets: |
| &r2 rd rs1 !extern |
| |
| # Formats 32: |
| @r2 ....... ..... ..... ... ..... ....... &r2 %rs1 %rd |
| |
| # *** RV32 xlrbr extension *** |
| crc32_b 0110000 10000 ..... 001 ..... 0010011 @r2 |
| crc32_h 0110000 10001 ..... 001 ..... 0010011 @r2 |
| crc32_w 0110000 10010 ..... 001 ..... 0010011 @r2 |
| crc32c_b 0110000 11000 ..... 001 ..... 0010011 @r2 |
| crc32c_h 0110000 11001 ..... 001 ..... 0010011 @r2 |
| crc32c_w 0110000 11010 ..... 001 ..... 0010011 @r2 |
| |
| # *** RV64 xlrbr extension (in addition to RV32) *** |
| crc32_d 0110000 10011 ..... 001 ..... 0010011 @r2 |
| crc32c_d 0110000 11011 ..... 001 ..... 0010011 @r2 |
