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#
# HPPA instruction decode definitions.
#
# Copyright (c) 2018 Richard Henderson <rth@twiddle.net>
#
# 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 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/>.
#

####
# Field definitions
####

%assemble_sr3   13:1 14:2
%assemble_sr3x  13:1 14:2 !function=expand_sr3x

%assemble_12    0:s1 2:1 3:10        !function=expand_shl2
%assemble_17    0:s1 16:5 2:1 3:10   !function=expand_shl2
%assemble_22    0:s1 16:10 2:1 3:10  !function=expand_shl2

%assemble_21    0:s1 1:11 14:2 16:5 12:2  !function=expand_shl11

%lowsign_11     0:s1 1:10
%lowsign_14     0:s1 1:13

%sm_imm         16:10 !function=expand_sm_imm

%im5_0          0:s1 1:4
%im5_16         16:s1 17:4
%ma_to_m        5:1 13:1 !function=ma_to_m

####
# Argument set definitions
####

# All insns that need to form a virtual address should use this set.
&ldst           t b x disp sp m scale size

&rr_cf          t r cf
&rrr_cf         t r1 r2 cf
&rrr_cf_sh      t r1 r2 cf sh
&rri_cf         t r i cf

&rrb_c_f        disp n c f r1 r2
&rib_c_f        disp n c f r i

####
# Format definitions
####

@rr_cf          ...... r:5 ..... cf:4 ....... t:5       &rr_cf
@rrr_cf         ...... r2:5 r1:5 cf:4 ....... t:5       &rrr_cf
@rrr_cf_sh      ...... r2:5 r1:5 cf:4 .... sh:2 . t:5   &rrr_cf_sh
@rrr_cf_sh0     ...... r2:5 r1:5 cf:4 ....... t:5       &rrr_cf_sh sh=0
@rri_cf         ...... r:5  t:5  cf:4 . ...........     &rri_cf i=%lowsign_11

@rrb_cf         ...... r2:5 r1:5 c:3 ........... n:1 .  \
                &rrb_c_f disp=%assemble_12
@rib_cf         ...... r:5 ..... c:3 ........... n:1 .  \
                &rib_c_f disp=%assemble_12 i=%im5_16

####
# System
####

break           000000 ----- ----- --- 00000000 -----

mtsp            000000 ----- r:5   ... 11000001 00000   sp=%assemble_sr3
mtctl           000000 t:5   r:5   --- 11000010 00000
mtsarcm         000000 01011 r:5   --- 11000110 00000
mtsm            000000 00000 r:5   000 11000011 00000

mfia            000000 ----- 00000 ---   10100101 t:5
mfsp            000000 ----- 00000 ...   00100101 t:5   sp=%assemble_sr3
mfctl           000000 r:5   00000- e:1 -01000101 t:5

sync            000000 ----- ----- 000 00100000 00000   # sync, syncdma

ldsid           000000 b:5   ----- sp:2 0 10000101 t:5

rsm             000000 ..........  000 01110011 t:5     i=%sm_imm
ssm             000000 ..........  000 01101011 t:5     i=%sm_imm

rfi             000000 ----- ----- --- 01100000 00000
rfi_r           000000 ----- ----- --- 01100101 00000

####
# Memory Management
####

@addrx          ...... b:5 x:5 .. ........ m:1 .....    \
                &ldst disp=0 scale=0 t=0 sp=0 size=0

nop             000001 ----- ----- -- 11001010 0 -----         # fdc, disp
nop_addrx       000001 ..... ..... -- 01001010 . -----  @addrx # fdc, index
nop_addrx       000001 ..... ..... -- 01001011 . -----  @addrx # fdce
nop_addrx       000001 ..... ..... --- 0001010 . -----  @addrx # fic 0x0a
nop_addrx       000001 ..... ..... -- 01001111 . 00000  @addrx # fic 0x4f
nop_addrx       000001 ..... ..... --- 0001011 . -----  @addrx # fice
nop_addrx       000001 ..... ..... -- 01001110 . 00000  @addrx # pdc

probe           000001 b:5 ri:5 sp:2 imm:1 100011 write:1 0 t:5

ixtlbx          000001 b:5 r:5 sp:2 0100000 addr:1 0 00000      data=1
ixtlbx          000001 b:5 r:5 ... 000000 addr:1 0 00000        \
                sp=%assemble_sr3x data=0

pxtlbx          000001 b:5 x:5 sp:2 0100100 local:1 m:1 -----   data=1
pxtlbx          000001 b:5 x:5 ... 000100 local:1 m:1 -----     \
                sp=%assemble_sr3x data=0

lpa             000001 b:5 x:5 sp:2 01001101 m:1 t:5    \
                &ldst disp=0 scale=0 size=0

lci             000001 ----- ----- -- 01001100 0 t:5

####
# Arith/Log
####

andcm           000010 ..... ..... .... 000000 0 .....  @rrr_cf
and             000010 ..... ..... .... 001000 0 .....  @rrr_cf
or              000010 ..... ..... .... 001001 0 .....  @rrr_cf
xor             000010 ..... ..... .... 001010 0 .....  @rrr_cf
uxor            000010 ..... ..... .... 001110 0 .....  @rrr_cf
ds              000010 ..... ..... .... 010001 0 .....  @rrr_cf
cmpclr          000010 ..... ..... .... 100010 0 .....  @rrr_cf
uaddcm          000010 ..... ..... .... 100110 0 .....  @rrr_cf
uaddcm_tc       000010 ..... ..... .... 100111 0 .....  @rrr_cf
dcor            000010 ..... 00000 .... 101110 0 .....  @rr_cf
dcor_i          000010 ..... 00000 .... 101111 0 .....  @rr_cf

add             000010 ..... ..... .... 0110.. 0 .....  @rrr_cf_sh
add_l           000010 ..... ..... .... 1010.. 0 .....  @rrr_cf_sh
add_tsv         000010 ..... ..... .... 1110.. 0 .....  @rrr_cf_sh
add_c           000010 ..... ..... .... 011100 0 .....  @rrr_cf_sh0
add_c_tsv       000010 ..... ..... .... 111100 0 .....  @rrr_cf_sh0

sub             000010 ..... ..... .... 010000 0 .....  @rrr_cf
sub_tsv         000010 ..... ..... .... 110000 0 .....  @rrr_cf
sub_tc          000010 ..... ..... .... 010011 0 .....  @rrr_cf
sub_tsv_tc      000010 ..... ..... .... 110011 0 .....  @rrr_cf
sub_b           000010 ..... ..... .... 010100 0 .....  @rrr_cf
sub_b_tsv       000010 ..... ..... .... 110100 0 .....  @rrr_cf

ldil            001000 t:5 .....................        i=%assemble_21
addil           001010 r:5 .....................        i=%assemble_21
ldo             001101 b:5 t:5 -- ..............        i=%lowsign_14

addi            101101 ..... ..... .... 0 ...........   @rri_cf
addi_tsv        101101 ..... ..... .... 1 ...........   @rri_cf
addi_tc         101100 ..... ..... .... 0 ...........   @rri_cf
addi_tc_tsv     101100 ..... ..... .... 1 ...........   @rri_cf

subi            100101 ..... ..... .... 0 ...........   @rri_cf
subi_tsv        100101 ..... ..... .... 1 ...........   @rri_cf

cmpiclr         100100 ..... ..... .... 0 ...........   @rri_cf

####
# Index Mem
####

@ldstx          ...... b:5 x:5 sp:2 scale:1 ....... m:1 t:5     &ldst disp=0
@ldim5          ...... b:5 ..... sp:2 ......... t:5     \
                &ldst disp=%im5_16 x=0 scale=0 m=%ma_to_m
@stim5          ...... b:5 t:5 sp:2 ......... .....     \
                &ldst disp=%im5_0 x=0 scale=0 m=%ma_to_m

ld              000011 ..... ..... .. . 1 -- 00 size:2 ......   @ldim5
ld              000011 ..... ..... .. . 0 -- 00 size:2 ......   @ldstx
st              000011 ..... ..... .. . 1 -- 10 size:2 ......   @stim5
ldc             000011 ..... ..... .. . 1 -- 0111      ......   @ldim5 size=2
ldc             000011 ..... ..... .. . 0 -- 0111      ......   @ldstx size=2
lda             000011 ..... ..... .. . 1 -- 0110      ......   @ldim5 size=2
lda             000011 ..... ..... .. . 0 -- 0110      ......   @ldstx size=2
sta             000011 ..... ..... .. . 1 -- 1110      ......   @stim5 size=2
stby            000011 b:5 r:5 sp:2 a:1 1 -- 1100 m:1   .....   disp=%im5_0

####
# Floating-point Multiply Add
####

&mpyadd         rm1 rm2 ta ra tm
@mpyadd         ...... rm1:5 rm2:5 ta:5 ra:5 . tm:5     &mpyadd

fmpyadd_f       000110 ..... ..... ..... ..... 0 .....  @mpyadd
fmpyadd_d       000110 ..... ..... ..... ..... 1 .....  @mpyadd
fmpysub_f       100110 ..... ..... ..... ..... 0 .....  @mpyadd
fmpysub_d       100110 ..... ..... ..... ..... 1 .....  @mpyadd

####
# Conditional Branches
####

bb_sar          110000 00000 r:5 c:1 10 ........... n:1 .  disp=%assemble_12
bb_imm          110001 p:5   r:5 c:1 10 ........... n:1 .  disp=%assemble_12

movb            110010 ..... ..... ... ........... . .  @rrb_cf f=0
movbi           110011 ..... ..... ... ........... . .  @rib_cf f=0

cmpb            100000 ..... ..... ... ........... . .  @rrb_cf f=0
cmpb            100010 ..... ..... ... ........... . .  @rrb_cf f=1
cmpbi           100001 ..... ..... ... ........... . .  @rib_cf f=0
cmpbi           100011 ..... ..... ... ........... . .  @rib_cf f=1

addb            101000 ..... ..... ... ........... . .  @rrb_cf f=0
addb            101010 ..... ..... ... ........... . .  @rrb_cf f=1
addbi           101001 ..... ..... ... ........... . .  @rib_cf f=0
addbi           101011 ..... ..... ... ........... . .  @rib_cf f=1

####
# Shift, Extract, Deposit
####

shrpw_sar       110100 r2:5 r1:5 c:3 00 0    00000  t:5
shrpw_imm       110100 r2:5 r1:5 c:3 01 0    cpos:5 t:5

extrw_sar       110100 r:5  t:5  c:3 10 se:1 00000  clen:5
extrw_imm       110100 r:5  t:5  c:3 11 se:1 pos:5  clen:5

depw_sar        110101 t:5 r:5   c:3 00 nz:1 00000  clen:5
depw_imm        110101 t:5 r:5   c:3 01 nz:1 cpos:5 clen:5
depwi_sar       110101 t:5 ..... c:3 10 nz:1 00000  clen:5      i=%im5_16
depwi_imm       110101 t:5 ..... c:3 11 nz:1 cpos:5 clen:5      i=%im5_16

####
# Branch External
####

&BE             b l n disp sp
@be             ...... b:5 ..... ... ........... n:1 .  \
                &BE disp=%assemble_17 sp=%assemble_sr3

be              111000 ..... ..... ... ........... . .  @be l=0
be              111001 ..... ..... ... ........... . .  @be l=31

####
# Branch
####

&BL             l n disp
@bl             ...... l:5 ..... ... ........... n:1 .  &BL disp=%assemble_17

# B,L and B,L,PUSH
bl              111010 ..... ..... 000 ........... .   .        @bl
bl              111010 ..... ..... 100 ........... .   .        @bl
# B,L (long displacement)
bl              111010 ..... ..... 101 ........... n:1 .        &BL l=2 \
                disp=%assemble_22
b_gate          111010 ..... ..... 001 ........... .   .        @bl
blr             111010 l:5   x:5   010 00000000000 n:1 0
bv              111010 b:5   x:5   110 00000000000 n:1 0
bve             111010 b:5   00000 110 10000000000 n:1 -        l=0
bve             111010 b:5   00000 111 10000000000 n:1 -        l=2