xref: /openbmc/qemu/target/ppc/insn32.decode (revision 40f23e4e)
1#
2# Power ISA decode for 32-bit insns (opcode space 0)
3#
4# Copyright (c) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br)
5#
6# This library is free software; you can redistribute it and/or
7# modify it under the terms of the GNU Lesser General Public
8# License as published by the Free Software Foundation; either
9# version 2.1 of the License, or (at your option) any later version.
10#
11# This library is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14# Lesser General Public License for more details.
15#
16# You should have received a copy of the GNU Lesser General Public
17# License along with this library; if not, see <http://www.gnu.org/licenses/>.
18#
19
20&D              rt ra si:int64_t
21@D              ...... rt:5 ra:5 si:s16                 &D
22
23&D_bf           bf l:bool ra imm
24@D_bfs          ...... bf:3 - l:1 ra:5 imm:s16          &D_bf
25@D_bfu          ...... bf:3 - l:1 ra:5 imm:16           &D_bf
26
27%ds_si          2:s14  !function=times_4
28@DS             ...... rt:5 ra:5 .............. ..      &D si=%ds_si
29
30&DX             rt d
31%dx_d           6:s10 16:5 0:1
32@DX             ...... rt:5  ..... .......... ..... .   &DX d=%dx_d
33
34&VX             vrt vra vrb
35@VX             ...... vrt:5 vra:5 vrb:5 .......... .   &VX
36
37&X              rt ra rb
38@X              ...... rt:5 ra:5 rb:5 .......... .      &X
39
40&X_bi           rt bi
41@X_bi           ...... rt:5 bi:5 ----- .......... -     &X_bi
42
43&X_bfl          bf l:bool ra rb
44@X_bfl          ...... bf:3 - l:1 ra:5 rb:5 ..........- &X_bfl
45
46### Fixed-Point Load Instructions
47
48LBZ             100010 ..... ..... ................     @D
49LBZU            100011 ..... ..... ................     @D
50LBZX            011111 ..... ..... ..... 0001010111 -   @X
51LBZUX           011111 ..... ..... ..... 0001110111 -   @X
52
53LHZ             101000 ..... ..... ................     @D
54LHZU            101001 ..... ..... ................     @D
55LHZX            011111 ..... ..... ..... 0100010111 -   @X
56LHZUX           011111 ..... ..... ..... 0100110111 -   @X
57
58LHA             101010 ..... ..... ................     @D
59LHAU            101011 ..... ..... ................     @D
60LHAX            011111 ..... ..... ..... 0101010111 -   @X
61LHAXU           011111 ..... ..... ..... 0101110111 -   @X
62
63LWZ             100000 ..... ..... ................     @D
64LWZU            100001 ..... ..... ................     @D
65LWZX            011111 ..... ..... ..... 0000010111 -   @X
66LWZUX           011111 ..... ..... ..... 0000110111 -   @X
67
68LWA             111010 ..... ..... ..............10     @DS
69LWAX            011111 ..... ..... ..... 0101010101 -   @X
70LWAUX           011111 ..... ..... ..... 0101110101 -   @X
71
72LD              111010 ..... ..... ..............00     @DS
73LDU             111010 ..... ..... ..............01     @DS
74LDX             011111 ..... ..... ..... 0000010101 -   @X
75LDUX            011111 ..... ..... ..... 0000110101 -   @X
76
77### Fixed-Point Store Instructions
78
79STB             100110 ..... ..... ................     @D
80STBU            100111 ..... ..... ................     @D
81STBX            011111 ..... ..... ..... 0011010111 -   @X
82STBUX           011111 ..... ..... ..... 0011110111 -   @X
83
84STH             101100 ..... ..... ................     @D
85STHU            101101 ..... ..... ................     @D
86STHX            011111 ..... ..... ..... 0110010111 -   @X
87STHUX           011111 ..... ..... ..... 0110110111 -   @X
88
89STW             100100 ..... ..... ................     @D
90STWU            100101 ..... ..... ................     @D
91STWX            011111 ..... ..... ..... 0010010111 -   @X
92STWUX           011111 ..... ..... ..... 0010110111 -   @X
93
94STD             111110 ..... ..... ..............00     @DS
95STDU            111110 ..... ..... ..............01     @DS
96STDX            011111 ..... ..... ..... 0010010101 -   @X
97STDUX           011111 ..... ..... ..... 0010110101 -   @X
98
99### Fixed-Point Compare Instructions
100
101CMP             011111 ... - . ..... ..... 0000000000 - @X_bfl
102CMPL            011111 ... - . ..... ..... 0000100000 - @X_bfl
103CMPI            001011 ... - . ..... ................   @D_bfs
104CMPLI           001010 ... - . ..... ................   @D_bfu
105
106### Fixed-Point Arithmetic Instructions
107
108ADDI            001110 ..... ..... ................     @D
109ADDIS           001111 ..... ..... ................     @D
110
111ADDPCIS         010011 ..... ..... .......... 00010 .   @DX
112
113## Fixed-Point Logical Instructions
114
115CFUGED          011111 ..... ..... ..... 0011011100 -   @X
116
117### Move To/From System Register Instructions
118
119SETBC           011111 ..... ..... ----- 0110000000 -   @X_bi
120SETBCR          011111 ..... ..... ----- 0110100000 -   @X_bi
121SETNBC          011111 ..... ..... ----- 0111000000 -   @X_bi
122SETNBCR         011111 ..... ..... ----- 0111100000 -   @X_bi
123
124## Vector Bit Manipulation Instruction
125
126VCFUGED         000100 ..... ..... ..... 10101001101    @VX
127