#
# Power ISA decode for 32-bit insns (opcode space 0)
#
# Copyright (c) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br)
#
# 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/>.
#

&D              rt ra si:int64_t
@D              ...... rt:5 ra:5 si:s16                 &D

&D_bf           bf l:bool ra imm
@D_bfs          ...... bf:3 - l:1 ra:5 imm:s16          &D_bf
@D_bfu          ...... bf:3 - l:1 ra:5 imm:16           &D_bf

%ds_si          2:s14  !function=times_4
@DS             ...... rt:5 ra:5 .............. ..      &D si=%ds_si

&DX             rt d
%dx_d           6:s10 16:5 0:1
@DX             ...... rt:5  ..... .......... ..... .   &DX d=%dx_d

&VX             vrt vra vrb
@VX             ...... vrt:5 vra:5 vrb:5 .......... .   &VX

&X              rt ra rb
@X              ...... rt:5 ra:5 rb:5 .......... .      &X

&X_bi           rt bi
@X_bi           ...... rt:5 bi:5 ----- .......... -     &X_bi

&X_bfl          bf l:bool ra rb
@X_bfl          ...... bf:3 - l:1 ra:5 rb:5 ..........- &X_bfl

### Fixed-Point Load Instructions

LBZ             100010 ..... ..... ................     @D
LBZU            100011 ..... ..... ................     @D
LBZX            011111 ..... ..... ..... 0001010111 -   @X
LBZUX           011111 ..... ..... ..... 0001110111 -   @X

LHZ             101000 ..... ..... ................     @D
LHZU            101001 ..... ..... ................     @D
LHZX            011111 ..... ..... ..... 0100010111 -   @X
LHZUX           011111 ..... ..... ..... 0100110111 -   @X

LHA             101010 ..... ..... ................     @D
LHAU            101011 ..... ..... ................     @D
LHAX            011111 ..... ..... ..... 0101010111 -   @X
LHAXU           011111 ..... ..... ..... 0101110111 -   @X

LWZ             100000 ..... ..... ................     @D
LWZU            100001 ..... ..... ................     @D
LWZX            011111 ..... ..... ..... 0000010111 -   @X
LWZUX           011111 ..... ..... ..... 0000110111 -   @X

LWA             111010 ..... ..... ..............10     @DS
LWAX            011111 ..... ..... ..... 0101010101 -   @X
LWAUX           011111 ..... ..... ..... 0101110101 -   @X

LD              111010 ..... ..... ..............00     @DS
LDU             111010 ..... ..... ..............01     @DS
LDX             011111 ..... ..... ..... 0000010101 -   @X
LDUX            011111 ..... ..... ..... 0000110101 -   @X

### Fixed-Point Store Instructions

STB             100110 ..... ..... ................     @D
STBU            100111 ..... ..... ................     @D
STBX            011111 ..... ..... ..... 0011010111 -   @X
STBUX           011111 ..... ..... ..... 0011110111 -   @X

STH             101100 ..... ..... ................     @D
STHU            101101 ..... ..... ................     @D
STHX            011111 ..... ..... ..... 0110010111 -   @X
STHUX           011111 ..... ..... ..... 0110110111 -   @X

STW             100100 ..... ..... ................     @D
STWU            100101 ..... ..... ................     @D
STWX            011111 ..... ..... ..... 0010010111 -   @X
STWUX           011111 ..... ..... ..... 0010110111 -   @X

STD             111110 ..... ..... ..............00     @DS
STDU            111110 ..... ..... ..............01     @DS
STDX            011111 ..... ..... ..... 0010010101 -   @X
STDUX           011111 ..... ..... ..... 0010110101 -   @X

### Fixed-Point Compare Instructions

CMP             011111 ... - . ..... ..... 0000000000 - @X_bfl
CMPL            011111 ... - . ..... ..... 0000100000 - @X_bfl
CMPI            001011 ... - . ..... ................   @D_bfs
CMPLI           001010 ... - . ..... ................   @D_bfu

### Fixed-Point Arithmetic Instructions

ADDI            001110 ..... ..... ................     @D
ADDIS           001111 ..... ..... ................     @D

ADDPCIS         010011 ..... ..... .......... 00010 .   @DX

## Fixed-Point Logical Instructions

CFUGED          011111 ..... ..... ..... 0011011100 -   @X

### Move To/From System Register Instructions

SETBC           011111 ..... ..... ----- 0110000000 -   @X_bi
SETBCR          011111 ..... ..... ----- 0110100000 -   @X_bi
SETNBC          011111 ..... ..... ----- 0111000000 -   @X_bi
SETNBCR         011111 ..... ..... ----- 0111100000 -   @X_bi

## Vector Bit Manipulation Instruction

VCFUGED         000100 ..... ..... ..... 10101001101    @VX