contrib/rpc_examples/ocdrpc.hs

   1 -- OpenOCD RPC example, covered by GNU GPLv3 or later
   2 -- Copyright (C) 2014 Paul Fertser
   3 --
   4 -- Example output:
   5 -- $ ./ocdrpc
   6 -- Halting the target, full log output captured:
   7 -- target state: halted
   8 -- target halted due to debug-request, current mode: Thread
   9 -- xPSR: 0x21000000 pc: 0x00003352 msp: 0x20000fe8
  10 --
  11 -- Read memory, parse the result and show as a list of strings:
  12 -- ["0x20001000","0x0000334d","0x00002abb","0x0000118f","0x00002707","0x00002707","0x00002707","0x00000000","0x00000000","0x00000000","0x00000000","0x00002707","0x00002707","0x00000000","0x00002707","0x00002781"]
  13 -- Resuming
  14
  15 {-# LANGUAGE OverloadedStrings #-}
  16 module Main where
  17
  18 import Prelude
  19 import Control.Applicative
  20 import Network.Socket
  21 import System.IO.Streams.Core hiding (connect)
  22 import System.IO.Streams.Network
  23 import System.IO.Streams.Attoparsec
  24 import Data.Attoparsec.ByteString.Char8
  25 import Data.Attoparsec.Combinator
  26 import Data.ByteString.Char8 hiding (putStrLn, concat, map)
  27 import Text.Printf
  28
  29 ocdReply = manyTill anyChar (char '\x1a')
  30
  31 ocdExec (oistream, oostream) command = do
  32   write (Just $ pack $ command ++ "\x1a") oostream
  33   parseFromStream ocdReply oistream
  34
  35 -- For each line: dispose of address, then match hex values
  36 mdwParser = (manyTill anyChar (string ": ") *>
  37               hexadecimal `sepBy` char ' ')
  38             `sepBy` string " \n"
  39
  40 ocdMdw :: (InputStream ByteString, OutputStream ByteString) -> Integer -> Integer -> IO [Integer]
  41 ocdMdw s start count = do
  42   s <- ocdExec s $ "ocd_mdw " ++ show start ++ " " ++ show count
  43   case parseOnly mdwParser (pack s) of
  44     Right r -> return $ concat r
  45
  46 main = do
  47   osock <- socket AF_INET Stream defaultProtocol
  48   haddr <- inet_addr "127.0.0.1"
  49   connect osock (SockAddrInet 6666 haddr)
  50   ostreams <- socketToStreams osock
  51   putStrLn "Halting the target, full log output captured:"
  52   ocdExec ostreams "capture \"halt\"" >>= putStrLn
  53   putStrLn "Read memory, parse the result and show as a list of strings:"
  54   ocdMdw ostreams 0 16 >>= putStrLn . (show :: [String] -> String) . map (printf "0x%08x")
  55   putStrLn "Resuming"
  56   ocdExec ostreams "resume"