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|
{-# LANGUAGE BinaryLiterals #-}
-- This module organizes Emulator execution.
module Suem (Config(..), ConfigSocket(..), suem) where
import qualified Data.Vector.Unboxed as V
import qualified Data.Vector.Unboxed.Mutable as VM
import qualified Data.ByteString as B
import Prelude hiding (Word)
import Data.Word
import Data.IORef
import Data.Foldable
import Control.Monad.Reader (runReaderT)
import Data.IP
import Network.Socket
import Numeric
import Machine
import Control
import Instructions
import Utils
import Device
------------------------------------------------------------------------------
-- Main loop and command deciphering.
doInstruction :: Word16 -> Emulator ()
doInstruction 0b0000000000111100 = doORICCR
doInstruction 0b0000000001111100 = doORISR
doInstruction 0b0000001000111100 = doANDICCR
doInstruction 0b0000001001111100 = doANDISR
doInstruction 0b0000101000111100 = doEORICCR
doInstruction 0b0000101001111100 = doEORISR
doInstruction 0b0100101011111100 = doILLEGAL
doInstruction 0b0100111001110000 = doRESET
doInstruction 0b0100111001110001 = doNOP
doInstruction 0b0100111001110010 = doSTOP
doInstruction 0b0100111001110011 = doRTE
doInstruction 0b0100111001110101 = doRTS
doInstruction 0b0100111001110110 = doTRAPV
doInstruction 0b0100111001110111 = doRTR
doInstruction opcode
| (extractBits opcode [0..7]) == 0b00000000 =
doORI (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b00000010 =
doANDI (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b00000100 =
doSUBI (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b00000110 =
doADDI (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b00001010 =
doEORI (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b00001100 =
doCMPI (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0000 &&
(extractBits opcode [7]) == 0b0 &&
(extractBits opcode [10..12]) == 0b001 =
doMOVEP (extractBits opcode [4..6])
(extractBits opcode [8])
(extractBits opcode [9])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0000 &&
(extractBits opcode [8..9]) == 0b00 =
doBTST (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0000 &&
(extractBits opcode [8..9]) == 0b01 =
doBCHG (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0000 &&
(extractBits opcode [8..9]) == 0b10 =
doBCLR (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0000 &&
(extractBits opcode [8..9]) == 0b11 =
doBSET (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..1]) == 0b00 &&
(extractBits opcode [7..9]) == 0b001 =
doMOVEA (extractBits opcode [2..3])
(extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..1]) == 0b00 =
doMOVE (extractBits opcode [2..3])
(extractBits opcode [4..6])
(extractBits opcode [7..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100000011 =
doSRMOVE (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100010011 =
doMOVECCR (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100011011 =
doMOVESR (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b01000000 =
doNEGX (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b01000010 =
doCLR (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b01000100 =
doNEG (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b01000110 =
doNOT (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..8]) == 0b010010001 &&
(extractBits opcode [10..12]) == 0b000 =
doEXT (extractBits opcode [9])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100100000 =
doNBCD (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..12]) == 0b0100100001000 =
doSWAP (extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100100001 =
doPEA (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100100011 =
doTAS (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b01001010 =
doTST (extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..11]) == 0b010011100100 =
doTRAP (extractBits opcode [12..15])
| (extractBits opcode [0..12]) == 0b0100111001010 =
doLINK (extractBits opcode [13..15])
| (extractBits opcode [0..12]) == 0b0100111001011 =
doUNLK (extractBits opcode [13..15])
| (extractBits opcode [0..11]) == 0b010011100110 =
doMOVEUSP (extractBits opcode [12])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100111010 =
doJSR (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..9]) == 0b0100111011 =
doJMP (extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..4]) == 0b01001 &&
(extractBits opcode [6..8]) == 0b001 =
doMOVEM (extractBits opcode [5])
(extractBits opcode [9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0100 &&
(extractBits opcode [7..9]) == 0b111 =
doLEA (extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0100 &&
(extractBits opcode [7..9]) == 0b110 =
doCHK (extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0101 &&
(extractBits opcode [8..12]) == 0b11001 =
doDBcc (extractBits opcode [4..7])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0101 &&
(extractBits opcode [8..9]) == 0b11 =
doScc (extractBits opcode [4..7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0101 &&
(extractBits opcode [7]) == 0b0 =
doADDQ (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b0101 &&
(extractBits opcode [7]) == 0b1 =
doSUBQ (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..7]) == 0b01100001 =
doBSR (extractBits opcode [8..15])
| (extractBits opcode [0..3]) == 0b0110 =
doBcc (extractBits opcode [4..7])
(extractBits opcode [8..15])
| (extractBits opcode [0..3]) == 0b0111 &&
(extractBits opcode [7]) == 0b0 =
doMOVEQ (extractBits opcode [4..6])
(extractBits opcode [8..15])
| (extractBits opcode [0..3]) == 0b1000 &&
(extractBits opcode [7..9]) == 0b011 =
doDIVU (extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1000 &&
(extractBits opcode [7..9]) == 0b111 =
doDIVS (extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1000 &&
(extractBits opcode [7..11]) == 0b10000 =
doSBCD (extractBits opcode [4..6])
(extractBits opcode [12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1000 =
doOR (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1001 &&
(extractBits opcode [8..9]) == 0b11 =
doSUBA (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1001 &&
(extractBits opcode [7]) == 0b1 &&
(extractBits opcode [10..11]) == 0b00 =
doSUBX (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1001 =
doSUB (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1011 &&
(extractBits opcode [8..9]) == 0b11 =
doCMPA (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1011 &&
(extractBits opcode [7]) == 0b0 =
doCMP (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1011 &&
(extractBits opcode [7]) == 0b1 &&
(extractBits opcode [10..12]) == 0b001 =
doCMPM (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1011 &&
(extractBits opcode [7]) == 0b1 =
doEOR (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1100 &&
(extractBits opcode [7..9]) == 0b011 =
doMULU (extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1100 &&
(extractBits opcode [7..9]) == 0b111 =
doMULS (extractBits opcode [4..6])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1100 &&
(extractBits opcode [7..11]) == 0b10000 =
doABCD (extractBits opcode [4..6])
(extractBits opcode [12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1100 &&
(extractBits opcode [7]) == 0b1 &&
(extractBits opcode [10..11]) == 0b00 =
doEXG (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1100 =
doAND (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1101 &&
(extractBits opcode [8..9]) == 0b11 =
doADDA (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1101 &&
(extractBits opcode [7]) == 0b1 &&
(extractBits opcode [10..11]) == 0b00 =
doADDX (extractBits opcode [4..6])
(extractBits opcode [8..9])
(extractBits opcode [12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1101 =
doADD (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..6]) == 0b1110000 &&
(extractBits opcode [8..9]) == 0b11 =
doASD (extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..6]) == 0b1110001 &&
(extractBits opcode [8..9]) == 0b11 =
doLSD (extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..6]) == 0b1110010 &&
(extractBits opcode [8..9]) == 0b11 =
doROXd (extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..6]) == 0b1110011 &&
(extractBits opcode [8..9]) == 0b11 =
doROd (extractBits opcode [7])
(extractBits opcode [10..12])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1110 &&
(extractBits opcode [11..12]) == 0b00 =
doADSR (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1110 &&
(extractBits opcode [11..12]) == 0b01 =
doLSDR (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1110 &&
(extractBits opcode [11..12]) == 0b10 =
doROXdR (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10])
(extractBits opcode [13..15])
| (extractBits opcode [0..3]) == 0b1110 &&
(extractBits opcode [11..12]) == 0b11 =
doROdR (extractBits opcode [4..6])
(extractBits opcode [7])
(extractBits opcode [8..9])
(extractBits opcode [10])
(extractBits opcode [13..15])
| otherwise = do
pc <- readPC
sr <- readSR
d0 <- readD 0 4
d1 <- readD 1 4
d2 <- readD 2 4
d3 <- readD 3 4
d4 <- readD 4 4
d5 <- readD 5 4
d6 <- readD 6 4
d7 <- readD 7 4
a0 <- readA 0 4
a1 <- readA 1 4
a2 <- readA 2 4
a3 <- readA 3 4
a4 <- readA 4 4
a5 <- readA 5 4
a6 <- readA 6 4
a7 <- readA 7 4
error ("Error:\n"
++ "PC:0x" ++ showHex pc "\n"
++ "SR:0x" ++ showHex sr "\n\n"
++ "D0:0x" ++ showHex d0 "\n"
++ "D1:0x" ++ showHex d1 "\n"
++ "D2:0x" ++ showHex d2 "\n"
++ "D3:0x" ++ showHex d3 "\n"
++ "D4:0x" ++ showHex d4 "\n"
++ "D5:0x" ++ showHex d5 "\n"
++ "D6:0x" ++ showHex d6 "\n"
++ "D7:0x" ++ showHex d7 "\n\n"
++ "A0:0x" ++ showHex a0 "\n"
++ "A1:0x" ++ showHex a1 "\n"
++ "A2:0x" ++ showHex a2 "\n"
++ "A3:0x" ++ showHex a3 "\n"
++ "A4:0x" ++ showHex a4 "\n"
++ "A5:0x" ++ showHex a5 "\n"
++ "A6:0x" ++ showHex a6 "\n"
++ "A7:0x" ++ showHex a7 "")
runMachine :: Emulator ()
runMachine = forM_ [0..] $ \_ -> do
pc <- with pc $ \pc -> readIORef pc
opcode <- getWord $ fromIntegral pc
doInstruction opcode
checkInteruptsFromDevices
------------------------------------------------------------------------------
-- Config and start of execution based on the config.
data ConfigSocket = ConfigInet String | ConfigUnix String
data Config = Config Int -- frequence
Int -- size of RAM
FilePath -- path to ROM
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
makeSocket :: Maybe ConfigSocket -> IO (Maybe Socket)
makeSocket (Just (ConfigUnix a)) = do
sock <- socket AF_UNIX Stream defaultProtocol
Network.Socket.bind sock $ SockAddrUnix a
Network.Socket.listen sock 1024
return $ Just sock
makeSocket (Just (ConfigInet a)) = do
sock <- socket AF_INET Stream defaultProtocol
Network.Socket.bind sock $ SockAddrInet (read a) 0x0100007f
Network.Socket.listen sock 1024
return $ Just sock
makeSocket Nothing = return Nothing
makeMachine :: VM.IOVector Byte -> V.Vector Byte
-> Maybe ConfigSocket -> Maybe ConfigSocket
-> Maybe ConfigSocket -> Maybe ConfigSocket
-> Maybe ConfigSocket -> Maybe ConfigSocket
-> Maybe ConfigSocket -> Maybe ConfigSocket
-> IO Machine
makeMachine ramData romData s0 s1 s2 s3 s4 s5 s6 s7 = do
pc <- newIORef pcval
sr <- newIORef 0x2700
drs <- newIORef (fromIntegral 0, fromIntegral 0, fromIntegral 0,
fromIntegral 0, fromIntegral 0, fromIntegral 0,
fromIntegral 0, fromIntegral 0)
ars <- newIORef (fromIntegral 0, fromIntegral 0, fromIntegral 0,
fromIntegral 0, fromIntegral 0, fromIntegral 0,
fromIntegral 0)
usp <- newIORef 0
ssp <- newIORef sspval
ms0 <- makeSocket s0
ms1 <- makeSocket s1
ms2 <- makeSocket s2
ms3 <- makeSocket s3
ms4 <- makeSocket s4
ms5 <- makeSocket s5
ms6 <- makeSocket s6
ms7 <- makeSocket s7
mc0 <- newIORef Nothing
mc1 <- newIORef Nothing
mc2 <- newIORef Nothing
mc3 <- newIORef Nothing
mc4 <- newIORef Nothing
mc5 <- newIORef Nothing
mc6 <- newIORef Nothing
mc7 <- newIORef Nothing
return $ Machine pc sr drs ars usp ssp ramData romData
ms0 ms1 ms2 ms3 ms4 ms5 ms6 ms7
mc0 mc1 mc2 mc3 mc4 mc5 mc6 mc7
where pcval = (fromIntegral $ romData V.! 4) * 256 * 256 * 256 +
(fromIntegral $ romData V.! 5) * 256 * 256 +
(fromIntegral $ romData V.! 6) * 256 +
(fromIntegral $ romData V.! 7)
sspval = (fromIntegral $ romData V.! 0) * 256 * 256 * 256 +
(fromIntegral $ romData V.! 1) * 256 * 256 +
(fromIntegral $ romData V.! 2) * 256 +
(fromIntegral $ romData V.! 3)
runEmulator :: Emulator a -> Machine -> IO a
runEmulator (Emulator reader) m = runReaderT reader m
suem :: Config -> IO ()
suem (Config _ ramSize romPath s0 s1 s2 s3 s4 s5 s6 s7) = do
romData <- B.readFile romPath
ram <- VM.replicate ramSize 0
m <- makeMachine ram (V.fromList $ B.unpack $ romData)
s0 s1 s2 s3 s4 s5 s6 s7
runEmulator runMachine m
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