1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
{-
This file is part of shark-disassembler.
Copyright (C) 2014 Ricardo Wurmus
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
-}
{-# LANGUAGE QuasiQuotes #-}
module SHARC.ComputeField where
import SHARC.Types
import SHARC.Word48
import Language.Literals.Binary
import Data.Map (fromList, findWithDefault)
import Data.Word (Word8, Word16, Word64)
import Data.Bits ((.&.), (.|.), shift, shiftL, shiftR)
import Text.Printf (printf)
{-
The Compute Field
See page 6-1 for full description.
The compute field of an instruction is 23 bit wide and structured like this:
1 unused bit
2 CU bits (00=ALU, 01=Multiplier, 10=Shifter)
8 bit opcode
3 register addresses (result, x operand, y operand), each 4 bit wide
-}
-- 23 bit compute field
data ComputeField = ComputeField
{ compFieldCU :: ComputationUnit
, compFieldOpCode :: OpCode
, compFieldRn :: Dreg
, compFieldRx :: Dreg
, compFieldRy :: Dreg
}
data ComputationUnit = ALU | Multiplier | Shifter deriving Show
type OpCode = Word8
mkComputeField :: Word48 -> ComputeField
mkComputeField w = ComputeField cu op rn rx ry
where
word64 = word48ToWord64 w
w' = word64 `cutMask` 0x000000FFFFFF
cu = case w' `cutMask` [b| 011 0000 0000 0000 0000 0000 |] of
0 -> ALU
1 -> Multiplier
2 -> Shifter
op = w' `cutMask` [b| 000 1111 1111 0000 0000 0000 |]
rn = mkDreg $ w' `cutMask` [b| 000 0000 0000 1111 0000 0000 |]
rx = mkDreg $ w' `cutMask` [b| 000 0000 0000 0000 1111 0000 |]
ry = mkDreg $ w' `cutMask` [b| 000 0000 0000 0000 0000 1111 |]
instance Show ComputeField where
show cf = printer rn rx ry
where
dict = case compFieldCU cf of
ALU -> opCodesALU
Multiplier -> opCodesMultiplier
Shifter -> opCodesShifter
rn = show (compFieldRn cf)
rx = show (compFieldRx cf)
ry = show (compFieldRy cf)
def = rawPrintCF (show (compFieldCU cf)) (compFieldOpCode cf)
rawPrintCF cu op rn rx ry = printf "[%s] %s = %s [0x%02X] %s" cu rn rx op ry
printer = findWithDefault def (compFieldOpCode cf) dict
-- special type for Type 6 instruction
type ShiftOp = Word8
data ImmediateShift = ImmediateShift
ShiftOp {-6 bits-}
Word16 {-dependent on shiftop: either 6 bit shift value + 6 bit length; or 8 bit value-}
Dreg {-4 bit Rn register-}
Dreg {-4 bit Rx register-}
-- TODO
instance Show ImmediateShift where
show (ImmediateShift op dat rn rx) =
"[" ++ show rn ++ " = " ++ printf "0x%02X" op ++ " " ++ show rx ++ " data:" ++ printf "0x%02X" dat ++ "]"
opCodesALU = fromList
-- fixed point ALU operations (table 6-1)
[ (0, \n x y -> "") -- print nothing if the opcode is empty
, ([b| 0000 0001 |], \n x y -> n ++ " = " ++ x ++ " + " ++ y) -- Rn = Rx + Ry
, ([b| 0000 0010 |], \n x y -> n ++ " = " ++ x ++ " - " ++ y) -- Rn = Rx – Ry
, ([b| 0000 0101 |], \n x y -> n ++ " = " ++ x ++ " + " ++ y ++ " + CI") -- Rn = Rx + Ry + CI
, ([b| 0000 0110 |], \n x y -> n ++ " = " ++ x ++ " - " ++ y ++ " + CI - 1") -- Rn = Rx – Ry + CI – 1
, ([b| 0000 1001 |], \n x y -> n ++ " = (" ++ x ++ " + " ++ y ++ ")/2") -- Rn = (Rx + Ry)/2
, ([b| 0000 1010 |], \n x y -> "COMP(" ++ x ++ ", " ++ y ++ ")") -- COMP(Rx, Ry)
, ([b| 0000 1011 |], \n x y -> "COMPU(" ++ x ++ ", " ++ y ++ ")") -- COMPU(Rx, Ry)
, ([b| 0010 0101 |], \n x y -> n ++ " = " ++ x ++ " + CI") -- Rn = Rx + CI
, ([b| 0010 0110 |], \n x y -> n ++ " = " ++ x ++ " + CI - 1") -- Rn = Rx + CI – 1
, ([b| 0010 1001 |], \n x y -> n ++ " = " ++ x ++ " + 1") -- Rn = Rx + 1
, ([b| 0010 1010 |], \n x y -> n ++ " = " ++ x ++ " - 1") -- Rn = Rx – 1
, ([b| 0010 0010 |], \n x y -> n ++ " = - " ++ x) -- Rn = – Rx
, ([b| 0011 0000 |], \n x y -> n ++ " = ABS " ++ x) -- Rn = ABS Rx
, ([b| 0010 0001 |], \n x y -> n ++ " = PASS " ++ x) -- Rn = PASS Rx
, ([b| 0100 0000 |], \n x y -> n ++ " = " ++ x ++ " AND " ++ y) -- Rn = Rx AND Ry
, ([b| 0100 0001 |], \n x y -> n ++ " = " ++ x ++ " OR " ++ y) -- Rn = Rx OR Ry
, ([b| 0100 0010 |], \n x y -> n ++ " = " ++ x ++ " XOR " ++ y) -- Rn = Rx XOR Ry
, ([b| 0100 0011 |], \n x y -> n ++ " = NOT " ++ x) -- Rn = NOT Rx
, ([b| 0110 0001 |], \n x y -> n ++ " = MIN(" ++ x ++ ", " ++ y ++ ")") -- Rn = MIN(Rx, Ry)
, ([b| 0110 0010 |], \n x y -> n ++ " = MAX(" ++ x ++ ", " ++ y ++ ")") -- Rn = MAX(Rx, Ry)
, ([b| 0110 0011 |], \n x y -> n ++ " = CLIP " ++ x ++ " BY " ++ y) -- Rn = CLIP Rx BY Ry
-- floating-point ALU operations (table 6-2)
, ([b| 1000 0001 |], \n x y -> n ++ " = " ++ x ++ " + " ++ y) -- Fn = Fx + Fy
, ([b| 1000 0010 |], \n x y -> n ++ " = " ++ x ++ " - " ++ y) -- Fn = Fx – Fy
, ([b| 1001 0001 |], \n x y -> n ++ " = ABS (" ++ x ++ " + " ++ y ++ ")") -- Fn = ABS (Fx + Fy)
, ([b| 1001 0010 |], \n x y -> n ++ " = ABS (" ++ x ++ " - " ++ y ++ ")") -- Fn = ABS (Fx – Fy)
, ([b| 1000 1001 |], \n x y -> n ++ " = (" ++ x ++ " + " ++ y ++ ")/2") -- Fn = (Fx + Fy)/2
, ([b| 1000 1010 |], \n x y -> n ++ " = COMP(" ++ x ++ ", " ++ y ++ ")") -- Fn = COMP(Fx, Fy)
, ([b| 1010 0010 |], \n x y -> n ++ " = -" ++ x) -- Fn = –Fx
, ([b| 1011 0000 |], \n x y -> n ++ " = ABS " ++ x) -- Fn = ABS Fx
, ([b| 1010 0001 |], \n x y -> n ++ " = PASS " ++ x) -- Fn = PASS Fx
, ([b| 1010 0101 |], \n x y -> n ++ " = RND " ++ x) -- Fn = RND Fx
, ([b| 1011 1101 |], \n x y -> n ++ " = SCALB " ++ x ++ " BY " ++ y) -- Fn = SCALB Fx BY Ry
, ([b| 1010 1101 |], \n x y -> n ++ " = MANT " ++ x) -- Rn = MANT Fx
, ([b| 1100 0001 |], \n x y -> n ++ " = LOGB " ++ x) -- Rn = LOGB Fx
, ([b| 1101 1001 |], \n x y -> n ++ " = FIX " ++ x ++ " BY " ++ y) -- Rn = FIX Fx BY Ry
, ([b| 1100 1001 |], \n x y -> n ++ " = FIX " ++ x) -- Rn = FIX Fx
, ([b| 1101 1101 |], \n x y -> n ++ " = TRUNC " ++ x ++ " BY " ++ y) -- Rn = TRUNC Fx BY Ry
, ([b| 1100 1101 |], \n x y -> n ++ " = TRUNC " ++ x) -- Rn = TRUNC Fx
, ([b| 1101 1010 |], \n x y -> n ++ " = FLOAT " ++ x ++ " BY " ++ y) -- Fn = FLOAT Rx BY Ry
, ([b| 1100 1010 |], \n x y -> n ++ " = FLOAT " ++ x) -- Fn = FLOAT Rx
, ([b| 1100 0100 |], \n x y -> n ++ " = RECIPS " ++ x) -- Fn = RECIPS Fx
, ([b| 1100 0101 |], \n x y -> n ++ " = RSQRTS " ++ x) -- Fn = RSQRTS Fx
, ([b| 1110 0000 |], \n x y -> n ++ " = " ++ x ++ " COPYSIGN " ++ y) -- Fn = Fx COPYSIGN Fy
, ([b| 1110 0001 |], \n x y -> n ++ " = MIN(" ++ x ++ ", " ++ y ++ ")") -- Fn = MIN(Fx, Fy)
, ([b| 1110 0010 |], \n x y -> n ++ " = MAX(" ++ x ++ ", " ++ y ++ ")") -- Fn = MAX(Fx, Fy)
, ([b| 1110 0011 |], \n x y -> n ++ " = CLIY " ++ x ++ " BY " ++ y) -- Fn = CLIP Fx BY Fy
]
opCodesMultiplier = fromList [] -- TODO
{-
-- fixed-point multiplier operations (table 6-3)
-- TODO: check table 6-5 and table 6-6 for y/x/f/r flags
[b| 01yx f00r ] -- on page 6-56 -- Rn = Rx*Ry mod2
[b| 01yx f10r ] -- on page 6-56 -- MRF = Rx*Ry mod2
[b| 01yx f11r ] -- on page 6-56 -- MRB = Rx*Ry mod2
[b| 10yx f00r ] -- on page 6-57 -- Rn = MRF +Rx*Ry mod2
[b| 10yx f01r ] -- on page 6-57 -- Rn = MRB +Rx*Ry mod2
[b| 10yx f10r ] -- on page 6-57 -- MRF = MRF +Rx*Ry mod2
[b| 10yx f11r ] -- on page 6-57 -- MRB = MRB +Rx*Ry mod2
[b| 11yx f00r ] -- on page 6-58 -- Rn = MRF –Rx*Ry mod2
[b| 11yx f01r ] -- on page 6-58 -- Rn = MRB –Rx*Ry mod2
[b| 11yx f10r ] -- on page 6-58 -- MRF = MRF –Rx*Ry mod2
[b| 11yx f11r ] -- on page 6-58 -- MRB = MRB –Rx*Ry mod2
[b| 0000 f00x ] -- on page 6-59 -- Rn = SAT MRF mod1
[b| 0000 f01x ] -- on page 6-59 -- Rn = SAT MRB mod1
[b| 0000 f10x ] -- on page 6-59 -- MRF = SAT MRF mod1
[b| 0000 f11x ] -- on page 6-59 -- MRB = SAT MRB mod1
[b| 0001 100x ] -- on page 6-60 -- Rn =RND MRF mod1
[b| 0001 101x ] -- on page 6-60 -- Rn = RND MRB mod1
[b| 0001 110x ] -- on page 6-60 -- MRF = RND MRF mod1
[b| 0001 111x ] -- on page 6-60 -- MRB = RND MRB mod1
[b| 0001 0100 ] -- on page 6-61 -- MRF = 0
[b| 0001 0110r ] -- on page 6-61 -- MRB = 0
-- MR = Rn on page 6-62
-- Rn = MR on page 6-62
-- floating-point multiplier operations (table 6-4)
[b| 0011 0000 ] -- on page 6-64 -- Fn = Fx*Fy
-}
opCodesShifter = fromList
-- shifter operations (table 6-8)
[ ([b| 0000 0000 |], \n x y -> n ++ " = LSHIFT " ++ x ++ " BY " ++ y) -- Rn = LSHIFT Rx BY Ry|<data8>
, ([b| 0010 0000 |], \n x y -> n ++ " = OR LSHIFT " ++ x ++ " BY " ++ y) -- Rn = Rn OR LSHIFT Rx BY Ry|<data8>
, ([b| 0000 0100 |], \n x y -> n ++ " = ASHIFT " ++ x ++ " BY " ++ y) -- Rn = ASHIFT Rx BY Ry|<data8>
, ([b| 0010 0100 |], \n x y -> n ++ " = " ++ n ++ " OR ASHIFT " ++ x ++ " BY "++ y) -- Rn = Rn OR ASHIFT Rx BY Ry|<data8>
, ([b| 0000 1000 |], \n x y -> n ++ " = ROT " ++ x ++ " BY " ++ y) -- Rn = ROT Rx BY Ry|<data8>
, ([b| 1100 0100 |], \n x y -> n ++ " = BCLR " ++ x ++ " BY " ++ y) -- Rn = BCLR Rx BY Ry|<data8>
, ([b| 1100 0000 |], \n x y -> n ++ " = BSET " ++ x ++ " BY " ++ y) -- Rn = BSET Rx BY Ry|<data8>
, ([b| 1100 1000 |], \n x y -> n ++ " = BTGL " ++ x ++ " BY " ++ y) -- Rn = BTGL Rx BY Ry|<data8>
, ([b| 1100 1100 |], \n x y -> "BTST " ++ x ++ " BY " ++ y) -- BTST Rx BY Ry|<data8>
, ([b| 0100 0100 |], \n x y -> n ++ " = FDEP " ++ x ++ " BY " ++ y) -- Rn = FDEP Rx BY Ry|<bit6>:<len6>
, ([b| 0110 0100 |], \n x y -> n ++ " = " ++ n ++ " OR FDEP " ++ x ++ " BY " ++ y) -- Rn = Rn OR FDEP Rx BY Ry|<bit6>:<len6>
, ([b| 0100 1100 |], \n x y -> n ++ " = FDEP " ++ x ++ " BY " ++ y) -- Rn = FDEP Rx BY Ry|<bit6>:<len6> (SE)
, ([b| 0110 1100 |], \n x y -> n ++ " = " ++ n ++ " OR FDEP " ++ x ++ " BY " ++ y) -- Rn = Rn OR FDEP Rx BY Ry|<bit6>:<len6>(SE)
, ([b| 0100 0000 |], \n x y -> n ++ " = FEXT " ++ x ++ " BY " ++ y) -- Rn = FEXT RX BY Ry|<bit6>:<len6>
, ([b| 0100 1000 |], \n x y -> n ++ " = FEXT " ++ x ++ " BY " ++ y ++ " (SE)") -- Rn = FEXT Rx BY Ry|<bit6>:<len6> (SE)
, ([b| 1000 0000 |], \n x y -> n ++ " = EXP " ++ x) -- Rn = EXP Rx
, ([b| 1000 0100 |], \n x y -> n ++ " = EXP " ++ x ++ " (EX)") -- Rn = EXP Rx (EX)
, ([b| 1000 1000 |], \n x y -> n ++ " = LEFTZ " ++ x) -- Rn = LEFTZ Rx
, ([b| 1000 1100 |], \n x y -> n ++ " = LEFTO " ++ x) -- Rn = LEFTO Rx
, ([b| 1001 0000 |], \n x y -> n ++ " = FPACK " ++ x) -- Rn = FPACK Fx
, ([b| 1001 0100 |], \n x y -> n ++ " = FUNPACK " ++ x) -- Fn = FUNPACK Rx
]
|
