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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.
86 lines
2.4 KiB
Haskell
86 lines
2.4 KiB
Haskell
-- Sample code to demonstrate how to emulate ARM64 code
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import Unicorn
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import Unicorn.Hook
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import qualified Unicorn.CPU.Arm64 as Arm64
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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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-- add x11, x13, x15
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armCode :: BS.ByteString
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armCode = BS.pack [0xab, 0x01, 0x0f, 0x8b]
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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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testArm64 :: IO ()
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testArm64 = do
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putStrLn "Emulate ARM64 code"
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result <- runEmulator $ do
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-- Initialize emulator in ARM mode
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uc <- open ArchArm64 [ModeArm]
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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 armCode
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-- Initialize machine registers
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regWrite uc Arm64.X11 0x1234
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regWrite uc Arm64.X13 0x6789
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regWrite uc Arm64.X15 0x3333
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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 one instruction at address with customized callback
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codeHookAdd uc hookCode ()address address
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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 armCode
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start uc address (address + codeLen) Nothing Nothing
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-- Return the results
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x11 <- regRead uc Arm64.X11
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return x11
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case result of
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Right x11 -> 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 $ ">>> X11 = 0x" ++ showHex x11
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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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testArm64
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