| # AArch64 A64 allowed instruction decoding |
| # |
| # Copyright (c) 2023 Linaro, Ltd |
| # |
| # 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/>. |
| |
| # |
| # This file is processed by scripts/decodetree.py |
| # |
| |
| &r rn |
| &ri rd imm |
| &rri_sf rd rn imm sf |
| &i imm |
| |
| |
| ### Data Processing - Immediate |
| |
| # PC-rel addressing |
| |
| %imm_pcrel 5:s19 29:2 |
| @pcrel . .. ..... ................... rd:5 &ri imm=%imm_pcrel |
| |
| ADR 0 .. 10000 ................... ..... @pcrel |
| ADRP 1 .. 10000 ................... ..... @pcrel |
| |
| # Add/subtract (immediate) |
| |
| %imm12_sh12 10:12 !function=shl_12 |
| @addsub_imm sf:1 .. ...... . imm:12 rn:5 rd:5 |
| @addsub_imm12 sf:1 .. ...... . ............ rn:5 rd:5 imm=%imm12_sh12 |
| |
| ADD_i . 00 100010 0 ............ ..... ..... @addsub_imm |
| ADD_i . 00 100010 1 ............ ..... ..... @addsub_imm12 |
| ADDS_i . 01 100010 0 ............ ..... ..... @addsub_imm |
| ADDS_i . 01 100010 1 ............ ..... ..... @addsub_imm12 |
| |
| SUB_i . 10 100010 0 ............ ..... ..... @addsub_imm |
| SUB_i . 10 100010 1 ............ ..... ..... @addsub_imm12 |
| SUBS_i . 11 100010 0 ............ ..... ..... @addsub_imm |
| SUBS_i . 11 100010 1 ............ ..... ..... @addsub_imm12 |
| |
| # Add/subtract (immediate with tags) |
| |
| &rri_tag rd rn uimm6 uimm4 |
| @addsub_imm_tag . .. ...... . uimm6:6 .. uimm4:4 rn:5 rd:5 &rri_tag |
| |
| ADDG_i 1 00 100011 0 ...... 00 .... ..... ..... @addsub_imm_tag |
| SUBG_i 1 10 100011 0 ...... 00 .... ..... ..... @addsub_imm_tag |
| |
| # Logical (immediate) |
| |
| &rri_log rd rn sf dbm |
| @logic_imm_64 1 .. ...... dbm:13 rn:5 rd:5 &rri_log sf=1 |
| @logic_imm_32 0 .. ...... 0 dbm:12 rn:5 rd:5 &rri_log sf=0 |
| |
| AND_i . 00 100100 . ...... ...... ..... ..... @logic_imm_64 |
| AND_i . 00 100100 . ...... ...... ..... ..... @logic_imm_32 |
| ORR_i . 01 100100 . ...... ...... ..... ..... @logic_imm_64 |
| ORR_i . 01 100100 . ...... ...... ..... ..... @logic_imm_32 |
| EOR_i . 10 100100 . ...... ...... ..... ..... @logic_imm_64 |
| EOR_i . 10 100100 . ...... ...... ..... ..... @logic_imm_32 |
| ANDS_i . 11 100100 . ...... ...... ..... ..... @logic_imm_64 |
| ANDS_i . 11 100100 . ...... ...... ..... ..... @logic_imm_32 |
| |
| # Move wide (immediate) |
| |
| &movw rd sf imm hw |
| @movw_64 1 .. ...... hw:2 imm:16 rd:5 &movw sf=1 |
| @movw_32 0 .. ...... 0 hw:1 imm:16 rd:5 &movw sf=0 |
| |
| MOVN . 00 100101 .. ................ ..... @movw_64 |
| MOVN . 00 100101 .. ................ ..... @movw_32 |
| MOVZ . 10 100101 .. ................ ..... @movw_64 |
| MOVZ . 10 100101 .. ................ ..... @movw_32 |
| MOVK . 11 100101 .. ................ ..... @movw_64 |
| MOVK . 11 100101 .. ................ ..... @movw_32 |
| |
| # Bitfield |
| |
| &bitfield rd rn sf immr imms |
| @bitfield_64 1 .. ...... 1 immr:6 imms:6 rn:5 rd:5 &bitfield sf=1 |
| @bitfield_32 0 .. ...... 0 0 immr:5 0 imms:5 rn:5 rd:5 &bitfield sf=0 |
| |
| SBFM . 00 100110 . ...... ...... ..... ..... @bitfield_64 |
| SBFM . 00 100110 . ...... ...... ..... ..... @bitfield_32 |
| BFM . 01 100110 . ...... ...... ..... ..... @bitfield_64 |
| BFM . 01 100110 . ...... ...... ..... ..... @bitfield_32 |
| UBFM . 10 100110 . ...... ...... ..... ..... @bitfield_64 |
| UBFM . 10 100110 . ...... ...... ..... ..... @bitfield_32 |
| |
| # Extract |
| |
| &extract rd rn rm imm sf |
| |
| EXTR 1 00 100111 1 0 rm:5 imm:6 rn:5 rd:5 &extract sf=1 |
| EXTR 0 00 100111 0 0 rm:5 0 imm:5 rn:5 rd:5 &extract sf=0 |
| |
| # Branches |
| |
| %imm26 0:s26 !function=times_4 |
| @branch . ..... .......................... &i imm=%imm26 |
| |
| B 0 00101 .......................... @branch |
| BL 1 00101 .......................... @branch |
| |
| %imm19 5:s19 !function=times_4 |
| &cbz rt imm sf nz |
| |
| CBZ sf:1 011010 nz:1 ................... rt:5 &cbz imm=%imm19 |
| |
| %imm14 5:s14 !function=times_4 |
| %imm31_19 31:1 19:5 |
| &tbz rt imm nz bitpos |
| |
| TBZ . 011011 nz:1 ..... .............. rt:5 &tbz imm=%imm14 bitpos=%imm31_19 |
| |
| B_cond 0101010 0 ................... 0 cond:4 imm=%imm19 |
| |
| BR 1101011 0000 11111 000000 rn:5 00000 &r |
| BLR 1101011 0001 11111 000000 rn:5 00000 &r |
| RET 1101011 0010 11111 000000 rn:5 00000 &r |
| |
| &braz rn m |
| BRAZ 1101011 0000 11111 00001 m:1 rn:5 11111 &braz # BRAAZ, BRABZ |
| BLRAZ 1101011 0001 11111 00001 m:1 rn:5 11111 &braz # BLRAAZ, BLRABZ |
| |
| &reta m |
| RETA 1101011 0010 11111 00001 m:1 11111 11111 &reta # RETAA, RETAB |
| |
| &bra rn rm m |
| BRA 1101011 1000 11111 00001 m:1 rn:5 rm:5 &bra # BRAA, BRAB |
| BLRA 1101011 1001 11111 00001 m:1 rn:5 rm:5 &bra # BLRAA, BLRAB |
| |
| ERET 1101011 0100 11111 000000 11111 00000 |
| ERETA 1101011 0100 11111 00001 m:1 11111 11111 &reta # ERETAA, ERETAB |
| |
| # We don't need to decode DRPS because it always UNDEFs except when |
| # the processor is in halting debug state (which we don't implement). |
| # The pattern is listed here as documentation. |
| # DRPS 1101011 0101 11111 000000 11111 00000 |
| |
| # Hint instruction group |
| { |
| [ |
| YIELD 1101 0101 0000 0011 0010 0000 001 11111 |
| WFE 1101 0101 0000 0011 0010 0000 010 11111 |
| WFI 1101 0101 0000 0011 0010 0000 011 11111 |
| # We implement WFE to never block, so our SEV/SEVL are NOPs |
| # SEV 1101 0101 0000 0011 0010 0000 100 11111 |
| # SEVL 1101 0101 0000 0011 0010 0000 101 11111 |
| # Our DGL is a NOP because we don't merge memory accesses anyway. |
| # DGL 1101 0101 0000 0011 0010 0000 110 11111 |
| XPACLRI 1101 0101 0000 0011 0010 0000 111 11111 |
| PACIA1716 1101 0101 0000 0011 0010 0001 000 11111 |
| PACIB1716 1101 0101 0000 0011 0010 0001 010 11111 |
| AUTIA1716 1101 0101 0000 0011 0010 0001 100 11111 |
| AUTIB1716 1101 0101 0000 0011 0010 0001 110 11111 |
| ESB 1101 0101 0000 0011 0010 0010 000 11111 |
| PACIAZ 1101 0101 0000 0011 0010 0011 000 11111 |
| PACIASP 1101 0101 0000 0011 0010 0011 001 11111 |
| PACIBZ 1101 0101 0000 0011 0010 0011 010 11111 |
| PACIBSP 1101 0101 0000 0011 0010 0011 011 11111 |
| AUTIAZ 1101 0101 0000 0011 0010 0011 100 11111 |
| AUTIASP 1101 0101 0000 0011 0010 0011 101 11111 |
| AUTIBZ 1101 0101 0000 0011 0010 0011 110 11111 |
| AUTIBSP 1101 0101 0000 0011 0010 0011 111 11111 |
| ] |
| # The canonical NOP has CRm == op2 == 0, but all of the space |
| # that isn't specifically allocated to an instruction must NOP |
| NOP 1101 0101 0000 0011 0010 ---- --- 11111 |
| } |
| |
| # Barriers |
| |
| CLREX 1101 0101 0000 0011 0011 ---- 010 11111 |
| DSB_DMB 1101 0101 0000 0011 0011 domain:2 types:2 10- 11111 |
| ISB 1101 0101 0000 0011 0011 ---- 110 11111 |
| SB 1101 0101 0000 0011 0011 0000 111 11111 |
| |
| # PSTATE |
| |
| CFINV 1101 0101 0000 0 000 0100 0000 000 11111 |
| XAFLAG 1101 0101 0000 0 000 0100 0000 001 11111 |
| AXFLAG 1101 0101 0000 0 000 0100 0000 010 11111 |
| |
| # These are architecturally all "MSR (immediate)"; we decode the destination |
| # register too because there is no commonality in our implementation. |
| @msr_i .... .... .... . ... .... imm:4 ... ..... |
| MSR_i_UAO 1101 0101 0000 0 000 0100 .... 011 11111 @msr_i |
| MSR_i_PAN 1101 0101 0000 0 000 0100 .... 100 11111 @msr_i |
| MSR_i_SPSEL 1101 0101 0000 0 000 0100 .... 101 11111 @msr_i |
| MSR_i_SBSS 1101 0101 0000 0 011 0100 .... 001 11111 @msr_i |
| MSR_i_DIT 1101 0101 0000 0 011 0100 .... 010 11111 @msr_i |
| MSR_i_TCO 1101 0101 0000 0 011 0100 .... 100 11111 @msr_i |
| MSR_i_DAIFSET 1101 0101 0000 0 011 0100 .... 110 11111 @msr_i |
| MSR_i_DAIFCLEAR 1101 0101 0000 0 011 0100 .... 111 11111 @msr_i |
| MSR_i_SVCR 1101 0101 0000 0 011 0100 0 mask:2 imm:1 011 11111 |
| |
| # MRS, MSR (register), SYS, SYSL. These are all essentially the |
| # same instruction as far as QEMU is concerned. |
| # NB: op0 is bits [20:19], but op0=0b00 is other insns, so we have |
| # to hand-decode it. |
| SYS 1101 0101 00 l:1 01 op1:3 crn:4 crm:4 op2:3 rt:5 op0=1 |
| SYS 1101 0101 00 l:1 10 op1:3 crn:4 crm:4 op2:3 rt:5 op0=2 |
| SYS 1101 0101 00 l:1 11 op1:3 crn:4 crm:4 op2:3 rt:5 op0=3 |
| |
| # Exception generation |
| |
| @i16 .... .... ... imm:16 ... .. &i |
| SVC 1101 0100 000 ................ 000 01 @i16 |
| HVC 1101 0100 000 ................ 000 10 @i16 |
| SMC 1101 0100 000 ................ 000 11 @i16 |
| BRK 1101 0100 001 ................ 000 00 @i16 |
| HLT 1101 0100 010 ................ 000 00 @i16 |
| # These insns always UNDEF unless in halting debug state, which |
| # we don't implement. So we don't need to decode them. The patterns |
| # are listed here as documentation. |
| # DCPS1 1101 0100 101 ................ 000 01 @i16 |
| # DCPS2 1101 0100 101 ................ 000 10 @i16 |
| # DCPS3 1101 0100 101 ................ 000 11 @i16 |
| |
| # Loads and stores |
| |
| &stxr rn rt rt2 rs sz lasr |
| &stlr rn rt sz lasr |
| @stxr sz:2 ...... ... rs:5 lasr:1 rt2:5 rn:5 rt:5 &stxr |
| @stlr sz:2 ...... ... ..... lasr:1 ..... rn:5 rt:5 &stlr |
| %imm1_30_p2 30:1 !function=plus_2 |
| @stxp .. ...... ... rs:5 lasr:1 rt2:5 rn:5 rt:5 &stxr sz=%imm1_30_p2 |
| STXR .. 001000 000 ..... . ..... ..... ..... @stxr # inc STLXR |
| LDXR .. 001000 010 ..... . ..... ..... ..... @stxr # inc LDAXR |
| STLR .. 001000 100 11111 . 11111 ..... ..... @stlr # inc STLLR |
| LDAR .. 001000 110 11111 . 11111 ..... ..... @stlr # inc LDLAR |
| |
| STXP 1 . 001000 001 ..... . ..... ..... ..... @stxp # inc STLXP |
| LDXP 1 . 001000 011 ..... . ..... ..... ..... @stxp # inc LDAXP |
| |
| # CASP, CASPA, CASPAL, CASPL (we don't decode the bits that determine |
| # acquire/release semantics because QEMU's cmpxchg always has those) |
| CASP 0 . 001000 0 - 1 rs:5 - 11111 rn:5 rt:5 sz=%imm1_30_p2 |
| # CAS, CASA, CASAL, CASL |
| CAS sz:2 001000 1 - 1 rs:5 - 11111 rn:5 rt:5 |
| |
| &ldlit rt imm sz sign |
| @ldlit .. ... . .. ................... rt:5 &ldlit imm=%imm19 |
| |
| LD_lit 00 011 0 00 ................... ..... @ldlit sz=2 sign=0 |
| LD_lit 01 011 0 00 ................... ..... @ldlit sz=3 sign=0 |
| LD_lit 10 011 0 00 ................... ..... @ldlit sz=2 sign=1 |
| LD_lit_v 00 011 1 00 ................... ..... @ldlit sz=2 sign=0 |
| LD_lit_v 01 011 1 00 ................... ..... @ldlit sz=3 sign=0 |
| LD_lit_v 10 011 1 00 ................... ..... @ldlit sz=4 sign=0 |
| |
| # PRFM |
| NOP 11 011 0 00 ------------------- ----- |
| |
| &ldstpair rt2 rt rn imm sz sign w p |
| @ldstpair .. ... . ... . imm:s7 rt2:5 rn:5 rt:5 &ldstpair |
| |
| # STNP, LDNP: Signed offset, non-temporal hint. We don't emulate caches |
| # so we ignore hints about data access patterns, and handle these like |
| # plain signed offset. |
| STP 00 101 0 000 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| LDP 00 101 0 000 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| STP 10 101 0 000 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| LDP 10 101 0 000 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| STP_v 00 101 1 000 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| LDP_v 00 101 1 000 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| STP_v 01 101 1 000 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| LDP_v 01 101 1 000 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| STP_v 10 101 1 000 0 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=0 w=0 |
| LDP_v 10 101 1 000 1 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=0 w=0 |
| |
| # STP and LDP: post-indexed |
| STP 00 101 0 001 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=1 w=1 |
| LDP 00 101 0 001 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=1 w=1 |
| LDP 01 101 0 001 1 ....... ..... ..... ..... @ldstpair sz=2 sign=1 p=1 w=1 |
| STP 10 101 0 001 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=1 w=1 |
| LDP 10 101 0 001 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=1 w=1 |
| STP_v 00 101 1 001 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=1 w=1 |
| LDP_v 00 101 1 001 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=1 w=1 |
| STP_v 01 101 1 001 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=1 w=1 |
| LDP_v 01 101 1 001 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=1 w=1 |
| STP_v 10 101 1 001 0 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=1 w=1 |
| LDP_v 10 101 1 001 1 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=1 w=1 |
| |
| # STP and LDP: offset |
| STP 00 101 0 010 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| LDP 00 101 0 010 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| LDP 01 101 0 010 1 ....... ..... ..... ..... @ldstpair sz=2 sign=1 p=0 w=0 |
| STP 10 101 0 010 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| LDP 10 101 0 010 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| STP_v 00 101 1 010 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| LDP_v 00 101 1 010 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=0 |
| STP_v 01 101 1 010 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| LDP_v 01 101 1 010 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| STP_v 10 101 1 010 0 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=0 w=0 |
| LDP_v 10 101 1 010 1 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=0 w=0 |
| |
| # STP and LDP: pre-indexed |
| STP 00 101 0 011 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=1 |
| LDP 00 101 0 011 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=1 |
| LDP 01 101 0 011 1 ....... ..... ..... ..... @ldstpair sz=2 sign=1 p=0 w=1 |
| STP 10 101 0 011 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=1 |
| LDP 10 101 0 011 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=1 |
| STP_v 00 101 1 011 0 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=1 |
| LDP_v 00 101 1 011 1 ....... ..... ..... ..... @ldstpair sz=2 sign=0 p=0 w=1 |
| STP_v 01 101 1 011 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=1 |
| LDP_v 01 101 1 011 1 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=1 |
| STP_v 10 101 1 011 0 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=0 w=1 |
| LDP_v 10 101 1 011 1 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p=0 w=1 |
| |
| # STGP: store tag and pair |
| STGP 01 101 0 001 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=1 w=1 |
| STGP 01 101 0 010 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 |
| STGP 01 101 0 011 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=1 |
| |
| # Load/store register (unscaled immediate) |
| &ldst_imm rt rn imm sz sign w p unpriv ext |
| @ldst_imm .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=0 p=0 w=0 |
| @ldst_imm_pre .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=0 p=0 w=1 |
| @ldst_imm_post .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=0 p=1 w=1 |
| @ldst_imm_user .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=1 p=0 w=0 |
| |
| STR_i sz:2 111 0 00 00 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 |
| LDR_i 00 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=1 sz=0 |
| LDR_i 01 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=1 sz=1 |
| LDR_i 10 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=1 sz=2 |
| LDR_i 11 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 sz=3 |
| LDR_i 00 111 0 00 10 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=0 sz=0 |
| LDR_i 01 111 0 00 10 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=0 sz=1 |
| LDR_i 10 111 0 00 10 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=0 sz=2 |
| LDR_i 00 111 0 00 11 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=1 sz=0 |
| LDR_i 01 111 0 00 11 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=1 sz=1 |
| |
| STR_i sz:2 111 0 00 00 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 |
| LDR_i 00 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=1 sz=0 |
| LDR_i 01 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=1 sz=1 |
| LDR_i 10 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=1 sz=2 |
| LDR_i 11 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 sz=3 |
| LDR_i 00 111 0 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=0 sz=0 |
| LDR_i 01 111 0 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=0 sz=1 |
| LDR_i 10 111 0 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=0 sz=2 |
| LDR_i 00 111 0 00 11 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=1 sz=0 |
| LDR_i 01 111 0 00 11 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=1 sz=1 |
| |
| STR_i sz:2 111 0 00 00 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=0 |
| LDR_i 00 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=1 sz=0 |
| LDR_i 01 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=1 sz=1 |
| LDR_i 10 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=1 sz=2 |
| LDR_i 11 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=0 sz=3 |
| LDR_i 00 111 0 00 10 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=0 sz=0 |
| LDR_i 01 111 0 00 10 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=0 sz=1 |
| LDR_i 10 111 0 00 10 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=0 sz=2 |
| LDR_i 00 111 0 00 11 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=1 sz=0 |
| LDR_i 01 111 0 00 11 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=1 sz=1 |
| |
| STR_i sz:2 111 0 00 00 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 |
| LDR_i 00 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=1 sz=0 |
| LDR_i 01 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=1 sz=1 |
| LDR_i 10 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=1 sz=2 |
| LDR_i 11 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 sz=3 |
| LDR_i 00 111 0 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=0 sz=0 |
| LDR_i 01 111 0 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=0 sz=1 |
| LDR_i 10 111 0 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=0 sz=2 |
| LDR_i 00 111 0 00 11 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=1 sz=0 |
| LDR_i 01 111 0 00 11 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=1 sz=1 |
| |
| # PRFM : prefetch memory: a no-op for QEMU |
| NOP 11 111 0 00 10 0 --------- 00 ----- ----- |
| |
| STR_v_i sz:2 111 1 00 00 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 |
| STR_v_i 00 111 1 00 10 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 sz=4 |
| LDR_v_i sz:2 111 1 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 |
| LDR_v_i 00 111 1 00 11 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 sz=4 |
| |
| STR_v_i sz:2 111 1 00 00 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 |
| STR_v_i 00 111 1 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 sz=4 |
| LDR_v_i sz:2 111 1 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 |
| LDR_v_i 00 111 1 00 11 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 sz=4 |
| |
| STR_v_i sz:2 111 1 00 00 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 |
| STR_v_i 00 111 1 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 sz=4 |
| LDR_v_i sz:2 111 1 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 |
| LDR_v_i 00 111 1 00 11 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 sz=4 |
| |
| # Load/store with an unsigned 12 bit immediate, which is scaled by the |
| # element size. The function gets the sz:imm and returns the scaled immediate. |
| %uimm_scaled 10:12 sz:3 !function=uimm_scaled |
| |
| @ldst_uimm .. ... . .. .. ............ rn:5 rt:5 &ldst_imm unpriv=0 p=0 w=0 imm=%uimm_scaled |
| |
| STR_i sz:2 111 0 01 00 ............ ..... ..... @ldst_uimm sign=0 ext=0 |
| LDR_i 00 111 0 01 01 ............ ..... ..... @ldst_uimm sign=0 ext=1 sz=0 |
| LDR_i 01 111 0 01 01 ............ ..... ..... @ldst_uimm sign=0 ext=1 sz=1 |
| LDR_i 10 111 0 01 01 ............ ..... ..... @ldst_uimm sign=0 ext=1 sz=2 |
| LDR_i 11 111 0 01 01 ............ ..... ..... @ldst_uimm sign=0 ext=0 sz=3 |
| LDR_i 00 111 0 01 10 ............ ..... ..... @ldst_uimm sign=1 ext=0 sz=0 |
| LDR_i 01 111 0 01 10 ............ ..... ..... @ldst_uimm sign=1 ext=0 sz=1 |
| LDR_i 10 111 0 01 10 ............ ..... ..... @ldst_uimm sign=1 ext=0 sz=2 |
| LDR_i 00 111 0 01 11 ............ ..... ..... @ldst_uimm sign=1 ext=1 sz=0 |
| LDR_i 01 111 0 01 11 ............ ..... ..... @ldst_uimm sign=1 ext=1 sz=1 |
| |
| # PRFM |
| NOP 11 111 0 01 10 ------------ ----- ----- |
| |
| STR_v_i sz:2 111 1 01 00 ............ ..... ..... @ldst_uimm sign=0 ext=0 |
| STR_v_i 00 111 1 01 10 ............ ..... ..... @ldst_uimm sign=0 ext=0 sz=4 |
| LDR_v_i sz:2 111 1 01 01 ............ ..... ..... @ldst_uimm sign=0 ext=0 |
| LDR_v_i 00 111 1 01 11 ............ ..... ..... @ldst_uimm sign=0 ext=0 sz=4 |
| |
| # Load/store with register offset |
| &ldst rm rn rt sign ext sz opt s |
| @ldst .. ... . .. .. . rm:5 opt:3 s:1 .. rn:5 rt:5 &ldst |
| STR sz:2 111 0 00 00 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=0 |
| LDR 00 111 0 00 01 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=1 sz=0 |
| LDR 01 111 0 00 01 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=1 sz=1 |
| LDR 10 111 0 00 01 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=1 sz=2 |
| LDR 11 111 0 00 01 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=0 sz=3 |
| LDR 00 111 0 00 10 1 ..... ... . 10 ..... ..... @ldst sign=1 ext=0 sz=0 |
| LDR 01 111 0 00 10 1 ..... ... . 10 ..... ..... @ldst sign=1 ext=0 sz=1 |
| LDR 10 111 0 00 10 1 ..... ... . 10 ..... ..... @ldst sign=1 ext=0 sz=2 |
| LDR 00 111 0 00 11 1 ..... ... . 10 ..... ..... @ldst sign=1 ext=1 sz=0 |
| LDR 01 111 0 00 11 1 ..... ... . 10 ..... ..... @ldst sign=1 ext=1 sz=1 |
| |
| # PRFM |
| NOP 11 111 0 00 10 1 ----- -1- - 10 ----- ----- |
| |
| STR_v sz:2 111 1 00 00 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=0 |
| STR_v 00 111 1 00 10 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=0 sz=4 |
| LDR_v sz:2 111 1 00 01 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=0 |
| LDR_v 00 111 1 00 11 1 ..... ... . 10 ..... ..... @ldst sign=0 ext=0 sz=4 |
| |
| # Atomic memory operations |
| &atomic rs rn rt a r sz |
| @atomic sz:2 ... . .. a:1 r:1 . rs:5 . ... .. rn:5 rt:5 &atomic |
| LDADD .. 111 0 00 . . 1 ..... 0000 00 ..... ..... @atomic |
| LDCLR .. 111 0 00 . . 1 ..... 0001 00 ..... ..... @atomic |
| LDEOR .. 111 0 00 . . 1 ..... 0010 00 ..... ..... @atomic |
| LDSET .. 111 0 00 . . 1 ..... 0011 00 ..... ..... @atomic |
| LDSMAX .. 111 0 00 . . 1 ..... 0100 00 ..... ..... @atomic |
| LDSMIN .. 111 0 00 . . 1 ..... 0101 00 ..... ..... @atomic |
| LDUMAX .. 111 0 00 . . 1 ..... 0110 00 ..... ..... @atomic |
| LDUMIN .. 111 0 00 . . 1 ..... 0111 00 ..... ..... @atomic |
| SWP .. 111 0 00 . . 1 ..... 1000 00 ..... ..... @atomic |
| |
| LDAPR sz:2 111 0 00 1 0 1 11111 1100 00 rn:5 rt:5 |
| |
| # Load/store register (pointer authentication) |
| |
| # LDRA immediate is 10 bits signed and scaled, but the bits aren't all contiguous |
| %ldra_imm 22:s1 12:9 !function=times_2 |
| |
| LDRA 11 111 0 00 m:1 . 1 ......... w:1 1 rn:5 rt:5 imm=%ldra_imm |
| |
| &ldapr_stlr_i rn rt imm sz sign ext |
| @ldapr_stlr_i .. ...... .. . imm:9 .. rn:5 rt:5 &ldapr_stlr_i |
| STLR_i sz:2 011001 00 0 ......... 00 ..... ..... @ldapr_stlr_i sign=0 ext=0 |
| LDAPR_i sz:2 011001 01 0 ......... 00 ..... ..... @ldapr_stlr_i sign=0 ext=0 |
| LDAPR_i 00 011001 10 0 ......... 00 ..... ..... @ldapr_stlr_i sign=1 ext=0 sz=0 |
| LDAPR_i 01 011001 10 0 ......... 00 ..... ..... @ldapr_stlr_i sign=1 ext=0 sz=1 |
| LDAPR_i 10 011001 10 0 ......... 00 ..... ..... @ldapr_stlr_i sign=1 ext=0 sz=2 |
| LDAPR_i 00 011001 11 0 ......... 00 ..... ..... @ldapr_stlr_i sign=1 ext=1 sz=0 |
| LDAPR_i 01 011001 11 0 ......... 00 ..... ..... @ldapr_stlr_i sign=1 ext=1 sz=1 |
| |
| # Load/store multiple structures |
| # The 4-bit opcode in [15:12] encodes repeat count and structure elements |
| &ldst_mult rm rn rt sz q p rpt selem |
| @ldst_mult . q:1 ...... p:1 . . rm:5 .... sz:2 rn:5 rt:5 &ldst_mult |
| ST_mult 0 . 001100 . 0 0 ..... 0000 .. ..... ..... @ldst_mult rpt=1 selem=4 |
| ST_mult 0 . 001100 . 0 0 ..... 0010 .. ..... ..... @ldst_mult rpt=4 selem=1 |
| ST_mult 0 . 001100 . 0 0 ..... 0100 .. ..... ..... @ldst_mult rpt=1 selem=3 |
| ST_mult 0 . 001100 . 0 0 ..... 0110 .. ..... ..... @ldst_mult rpt=3 selem=1 |
| ST_mult 0 . 001100 . 0 0 ..... 0111 .. ..... ..... @ldst_mult rpt=1 selem=1 |
| ST_mult 0 . 001100 . 0 0 ..... 1000 .. ..... ..... @ldst_mult rpt=1 selem=2 |
| ST_mult 0 . 001100 . 0 0 ..... 1010 .. ..... ..... @ldst_mult rpt=2 selem=1 |
| |
| LD_mult 0 . 001100 . 1 0 ..... 0000 .. ..... ..... @ldst_mult rpt=1 selem=4 |
| LD_mult 0 . 001100 . 1 0 ..... 0010 .. ..... ..... @ldst_mult rpt=4 selem=1 |
| LD_mult 0 . 001100 . 1 0 ..... 0100 .. ..... ..... @ldst_mult rpt=1 selem=3 |
| LD_mult 0 . 001100 . 1 0 ..... 0110 .. ..... ..... @ldst_mult rpt=3 selem=1 |
| LD_mult 0 . 001100 . 1 0 ..... 0111 .. ..... ..... @ldst_mult rpt=1 selem=1 |
| LD_mult 0 . 001100 . 1 0 ..... 1000 .. ..... ..... @ldst_mult rpt=1 selem=2 |
| LD_mult 0 . 001100 . 1 0 ..... 1010 .. ..... ..... @ldst_mult rpt=2 selem=1 |
| |
| # Load/store single structure |
| &ldst_single rm rn rt p selem index scale |
| |
| %ldst_single_selem 13:1 21:1 !function=plus_1 |
| |
| %ldst_single_index_b 30:1 10:3 |
| %ldst_single_index_h 30:1 11:2 |
| %ldst_single_index_s 30:1 12:1 |
| |
| @ldst_single_b .. ...... p:1 .. rm:5 ...... rn:5 rt:5 \ |
| &ldst_single scale=0 selem=%ldst_single_selem \ |
| index=%ldst_single_index_b |
| @ldst_single_h .. ...... p:1 .. rm:5 ...... rn:5 rt:5 \ |
| &ldst_single scale=1 selem=%ldst_single_selem \ |
| index=%ldst_single_index_h |
| @ldst_single_s .. ...... p:1 .. rm:5 ...... rn:5 rt:5 \ |
| &ldst_single scale=2 selem=%ldst_single_selem \ |
| index=%ldst_single_index_s |
| @ldst_single_d . index:1 ...... p:1 .. rm:5 ...... rn:5 rt:5 \ |
| &ldst_single scale=3 selem=%ldst_single_selem |
| |
| ST_single 0 . 001101 . 0 . ..... 00 . ... ..... ..... @ldst_single_b |
| ST_single 0 . 001101 . 0 . ..... 01 . ..0 ..... ..... @ldst_single_h |
| ST_single 0 . 001101 . 0 . ..... 10 . .00 ..... ..... @ldst_single_s |
| ST_single 0 . 001101 . 0 . ..... 10 . 001 ..... ..... @ldst_single_d |
| |
| LD_single 0 . 001101 . 1 . ..... 00 . ... ..... ..... @ldst_single_b |
| LD_single 0 . 001101 . 1 . ..... 01 . ..0 ..... ..... @ldst_single_h |
| LD_single 0 . 001101 . 1 . ..... 10 . .00 ..... ..... @ldst_single_s |
| LD_single 0 . 001101 . 1 . ..... 10 . 001 ..... ..... @ldst_single_d |
| |
| # Replicating load case |
| LD_single_repl 0 q:1 001101 p:1 1 . rm:5 11 . 0 scale:2 rn:5 rt:5 selem=%ldst_single_selem |
| |
| %tag_offset 12:s9 !function=scale_by_log2_tag_granule |
| &ldst_tag rn rt imm p w |
| @ldst_tag ........ .. . ......... .. rn:5 rt:5 &ldst_tag imm=%tag_offset |
| @ldst_tag_mult ........ .. . 000000000 .. rn:5 rt:5 &ldst_tag imm=0 |
| |
| STZGM 11011001 00 1 ......... 00 ..... ..... @ldst_tag_mult p=0 w=0 |
| STG 11011001 00 1 ......... 01 ..... ..... @ldst_tag p=1 w=1 |
| STG 11011001 00 1 ......... 10 ..... ..... @ldst_tag p=0 w=0 |
| STG 11011001 00 1 ......... 11 ..... ..... @ldst_tag p=0 w=1 |
| |
| LDG 11011001 01 1 ......... 00 ..... ..... @ldst_tag p=0 w=0 |
| STZG 11011001 01 1 ......... 01 ..... ..... @ldst_tag p=1 w=1 |
| STZG 11011001 01 1 ......... 10 ..... ..... @ldst_tag p=0 w=0 |
| STZG 11011001 01 1 ......... 11 ..... ..... @ldst_tag p=0 w=1 |
| |
| STGM 11011001 10 1 ......... 00 ..... ..... @ldst_tag_mult p=0 w=0 |
| ST2G 11011001 10 1 ......... 01 ..... ..... @ldst_tag p=1 w=1 |
| ST2G 11011001 10 1 ......... 10 ..... ..... @ldst_tag p=0 w=0 |
| ST2G 11011001 10 1 ......... 11 ..... ..... @ldst_tag p=0 w=1 |
| |
| LDGM 11011001 11 1 ......... 00 ..... ..... @ldst_tag_mult p=0 w=0 |
| STZ2G 11011001 11 1 ......... 01 ..... ..... @ldst_tag p=1 w=1 |
| STZ2G 11011001 11 1 ......... 10 ..... ..... @ldst_tag p=0 w=0 |
| STZ2G 11011001 11 1 ......... 11 ..... ..... @ldst_tag p=0 w=1 |
