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https://github.com/yuzu-emu/unicorn
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These Haskell bindings make large use of c2hs to generate much of the code, so Unicorn's const_generator is not used. The emulator is based on the Either monad transformer. The IO monad is used to run the underlying Unicorn library, while the Either monad is used to handle errors. Instructions on how to build the bindings are located in bindings/haskell/README.TXT. The same samples found in samples/ can be found in bindings/haskell/samples. They should produce the same output, with slight differences in their error handling and messaging.
142 lines
4.5 KiB
Haskell
142 lines
4.5 KiB
Haskell
-- Sample code to demonstrate how to emulate m68k code
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import Unicorn
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import Unicorn.Hook
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import qualified Unicorn.CPU.M68k as M68k
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import qualified Data.ByteString as BS
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import Data.Word
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import qualified Numeric as N (showHex)
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-- Code to be emulated
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--
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-- movq #-19, %d3
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m68kCode :: BS.ByteString
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m68kCode = BS.pack [0x76, 0xed]
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-- Memory address where emulation starts
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address :: Word64
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address = 0x10000
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-- Pretty-print integral as hex
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showHex :: (Integral a, Show a) => a -> String
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showHex =
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flip N.showHex ""
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-- Calculate code length
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codeLength :: Num a => BS.ByteString -> a
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codeLength =
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fromIntegral . BS.length
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hookBlock :: BlockHook ()
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hookBlock _ addr size _ =
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putStrLn $ ">>> Tracing basic block at 0x" ++ showHex addr ++
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", block size = 0x" ++ (maybe "0" showHex size)
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hookCode :: CodeHook ()
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hookCode _ addr size _ =
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putStrLn $ ">>> Tracing instruction at 0x" ++ showHex addr ++
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", instruction size = 0x" ++ (maybe "0" showHex size)
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testM68k :: IO ()
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testM68k = do
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putStrLn "Emulate M68K code"
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result <- runEmulator $ do
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-- Initialize emulator in M68K mode
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uc <- open ArchM68k [ModeBigEndian]
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-- Map 2MB memory for this emulation
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memMap uc address (2 * 1024 * 1024) [ProtAll]
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-- Write machine code to be emulated to memory
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memWrite uc address m68kCode
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-- Initialize machine registers
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regWrite uc M68k.D0 0x0000
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regWrite uc M68k.D1 0x0000
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regWrite uc M68k.D2 0x0000
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regWrite uc M68k.D3 0x0000
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regWrite uc M68k.D4 0x0000
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regWrite uc M68k.D5 0x0000
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regWrite uc M68k.D6 0x0000
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regWrite uc M68k.D7 0x0000
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regWrite uc M68k.A0 0x0000
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regWrite uc M68k.A1 0x0000
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regWrite uc M68k.A2 0x0000
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regWrite uc M68k.A3 0x0000
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regWrite uc M68k.A4 0x0000
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regWrite uc M68k.A5 0x0000
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regWrite uc M68k.A6 0x0000
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regWrite uc M68k.A7 0x0000
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regWrite uc M68k.Pc 0x0000
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regWrite uc M68k.Sr 0x0000
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-- Tracing all basic blocks with customized callback
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blockHookAdd uc hookBlock () 1 0
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-- Tracing all instruction
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codeHookAdd uc hookCode () 1 0
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-- Emulate machine code in infinite time (last param = Nothing), or
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-- when finishing all the code
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let codeLen = codeLength m68kCode
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start uc address (address + codeLen) Nothing Nothing
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-- Return the results
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d0 <- regRead uc M68k.D0
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d1 <- regRead uc M68k.D1
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d2 <- regRead uc M68k.D2
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d3 <- regRead uc M68k.D3
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d4 <- regRead uc M68k.D4
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d5 <- regRead uc M68k.D5
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d6 <- regRead uc M68k.D6
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d7 <- regRead uc M68k.D7
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a0 <- regRead uc M68k.A0
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a1 <- regRead uc M68k.A1
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a2 <- regRead uc M68k.A2
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a3 <- regRead uc M68k.A3
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a4 <- regRead uc M68k.A4
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a5 <- regRead uc M68k.A5
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a6 <- regRead uc M68k.A6
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a7 <- regRead uc M68k.A7
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pc <- regRead uc M68k.Pc
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sr <- regRead uc M68k.Sr
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return (d0, d1, d2, d3, d4, d5, d6, d7,
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a0, a1, a2, a3, a4, a5, a6, a7,
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pc, sr)
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case result of
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Right (d0, d1, d2, d3, d4, d5, d6, d7,
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a0, a1, a2, a3, a4, a5, a6, a7,
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pc, sr) -> do
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-- Now print out some registers
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putStrLn ">>> Emulation done. Below is the CPU context"
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putStrLn $ ">>> A0 = 0x" ++ showHex a0 ++
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"\t\t>>> D0 = 0x" ++ showHex d0
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putStrLn $ ">>> A1 = 0x" ++ showHex a1 ++
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"\t\t>>> D1 = 0x" ++ showHex d1
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putStrLn $ ">>> A2 = 0x" ++ showHex a2 ++
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"\t\t>>> D2 = 0x" ++ showHex d2
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putStrLn $ ">>> A3 = 0x" ++ showHex a3 ++
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"\t\t>>> D3 = 0x" ++ showHex d3
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putStrLn $ ">>> A4 = 0x" ++ showHex a4 ++
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"\t\t>>> D4 = 0x" ++ showHex d4
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putStrLn $ ">>> A5 = 0x" ++ showHex a5 ++
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"\t\t>>> D5 = 0x" ++ showHex d5
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putStrLn $ ">>> A6 = 0x" ++ showHex a6 ++
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"\t\t>>> D6 = 0x" ++ showHex d6
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putStrLn $ ">>> A7 = 0x" ++ showHex a7 ++
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"\t\t>>> D7 = 0x" ++ showHex d7
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putStrLn $ ">>> PC = 0x" ++ showHex pc
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putStrLn $ ">>> SR = 0x" ++ showHex sr
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Left err -> putStrLn $ "Failed with error: " ++ show err ++ " (" ++
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strerror err ++ ")"
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main :: IO ()
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main =
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testM68k
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