| # |
| # Translation routines for the instructions of the XThead* ISA extensions |
| # |
| # Copyright (c) 2022 Christoph Muellner, christoph.muellner@vrull.eu |
| # Dr. Philipp Tomsich, philipp.tomsich@vrull.eu |
| # |
| # SPDX-License-Identifier: LGPL-2.1-or-later |
| # |
| # The documentation of the ISA extensions can be found here: |
| # https://github.com/T-head-Semi/thead-extension-spec/releases/latest |
| |
| # Fields: |
| %rd 7:5 |
| %rs1 15:5 |
| %rs2 20:5 |
| %sh5 20:5 |
| %sh6 20:6 |
| |
| # Argument sets |
| &r rd rs1 rs2 !extern |
| &r2 rd rs1 !extern |
| &shift shamt rs1 rd !extern |
| &th_bfext msb lsb rs1 rd |
| |
| # Formats |
| @sfence_vm ....... ..... ..... ... ..... ....... %rs1 |
| @rs2_s ....... ..... ..... ... ..... ....... %rs2 %rs1 |
| @r ....... ..... ..... ... ..... ....... &r %rs2 %rs1 %rd |
| @r2 ....... ..... ..... ... ..... ....... &r2 %rs1 %rd |
| @th_bfext msb:6 lsb:6 ..... ... ..... ....... &th_bfext %rs1 %rd |
| @sh5 ....... ..... ..... ... ..... ....... &shift shamt=%sh5 %rs1 %rd |
| @sh6 ...... ...... ..... ... ..... ....... &shift shamt=%sh6 %rs1 %rd |
| |
| # XTheadBa |
| # Instead of defining a new encoding, we simply use the decoder to |
| # extract the imm[0:1] field and dispatch to separate translation |
| # functions (mirroring the `sh[123]add` instructions from Zba and |
| # the regular RVI `add` instruction. |
| # |
| # The only difference between sh[123]add and addsl is that the shift |
| # is applied to rs1 (for addsl) instead of rs2 (for sh[123]add). |
| # |
| # Note that shift-by-0 is a valid operation according to the manual. |
| # This will be equivalent to a regular add. |
| add 0000000 ..... ..... 001 ..... 0001011 @r |
| th_addsl1 0000001 ..... ..... 001 ..... 0001011 @r |
| th_addsl2 0000010 ..... ..... 001 ..... 0001011 @r |
| th_addsl3 0000011 ..... ..... 001 ..... 0001011 @r |
| |
| # XTheadBb |
| th_ext ...... ...... ..... 010 ..... 0001011 @th_bfext |
| th_extu ...... ...... ..... 011 ..... 0001011 @th_bfext |
| th_ff0 1000010 00000 ..... 001 ..... 0001011 @r2 |
| th_ff1 1000011 00000 ..... 001 ..... 0001011 @r2 |
| th_srri 000100 ...... ..... 001 ..... 0001011 @sh6 |
| th_srriw 0001010 ..... ..... 001 ..... 0001011 @sh5 |
| th_rev 1000001 00000 ..... 001 ..... 0001011 @r2 |
| th_revw 1001000 00000 ..... 001 ..... 0001011 @r2 |
| th_tstnbz 1000000 00000 ..... 001 ..... 0001011 @r2 |
| |
| # XTheadBs |
| th_tst 100010 ...... ..... 001 ..... 0001011 @sh6 |
| |
| # XTheadCmo |
| th_dcache_call 0000000 00001 00000 000 00000 0001011 |
| th_dcache_ciall 0000000 00011 00000 000 00000 0001011 |
| th_dcache_iall 0000000 00010 00000 000 00000 0001011 |
| th_dcache_cpa 0000001 01001 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_cipa 0000001 01011 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_ipa 0000001 01010 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_cva 0000001 00101 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_civa 0000001 00111 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_iva 0000001 00110 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_csw 0000001 00001 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_cisw 0000001 00011 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_isw 0000001 00010 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_cpal1 0000001 01000 ..... 000 00000 0001011 @sfence_vm |
| th_dcache_cval1 0000001 00100 ..... 000 00000 0001011 @sfence_vm |
| th_icache_iall 0000000 10000 00000 000 00000 0001011 |
| th_icache_ialls 0000000 10001 00000 000 00000 0001011 |
| th_icache_ipa 0000001 11000 ..... 000 00000 0001011 @sfence_vm |
| th_icache_iva 0000001 10000 ..... 000 00000 0001011 @sfence_vm |
| th_l2cache_call 0000000 10101 00000 000 00000 0001011 |
| th_l2cache_ciall 0000000 10111 00000 000 00000 0001011 |
| th_l2cache_iall 0000000 10110 00000 000 00000 0001011 |
| |
| # XTheadSync |
| th_sfence_vmas 0000010 ..... ..... 000 00000 0001011 @rs2_s |
| th_sync 0000000 11000 00000 000 00000 0001011 |
| th_sync_i 0000000 11010 00000 000 00000 0001011 |
| th_sync_is 0000000 11011 00000 000 00000 0001011 |
| th_sync_s 0000000 11001 00000 000 00000 0001011 |
