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https://github.com/yuzu-emu/unicorn.git
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143 lines
4.5 KiB
Haskell
143 lines
4.5 KiB
Haskell
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-- 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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