From a0075f5bdcf11206e78795811049b389d22187c7 Mon Sep 17 00:00:00 2001 From: rekado Date: Sun, 14 Sep 2014 22:08:43 +0200 Subject: initial commit --- LICENSE | 675 +++++++++++++++++++++++++++++++++++++++++++++++ Main.hs | 28 ++ SHARC/ComputeField.hs | 210 +++++++++++++++ SHARC/Instruction.hs | 500 +++++++++++++++++++++++++++++++++++ SHARC/Kernel.hs | 51 ++++ SHARC/Types.hs | 184 +++++++++++++ SHARC/Word48.hs | 58 ++++ Setup.hs | 2 + sharc-disassembler.cabal | 23 ++ 9 files changed, 1731 insertions(+) create mode 100644 LICENSE create mode 100644 Main.hs create mode 100644 SHARC/ComputeField.hs create mode 100644 SHARC/Instruction.hs create mode 100644 SHARC/Kernel.hs create mode 100644 SHARC/Types.hs create mode 100644 SHARC/Word48.hs create mode 100644 Setup.hs create mode 100644 sharc-disassembler.cabal diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..346a1ba --- /dev/null +++ b/LICENSE @@ -0,0 +1,675 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/Main.hs b/Main.hs new file mode 100644 index 0000000..354bc82 --- /dev/null +++ b/Main.hs @@ -0,0 +1,28 @@ +{- + This file is part of shark-disassembler. + + Copyright (C) 2014 Ricardo Wurmus + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} + +import SHARC.Kernel +import System.Environment (getArgs) +import qualified Data.ByteString.Lazy as B + +main :: IO () +main = do + args <- getArgs + contents <- B.readFile (head args) + printKernel contents diff --git a/SHARC/ComputeField.hs b/SHARC/ComputeField.hs new file mode 100644 index 0000000..d82d75f --- /dev/null +++ b/SHARC/ComputeField.hs @@ -0,0 +1,210 @@ +{- + This file is part of shark-disassembler. + + Copyright (C) 2014 Ricardo Wurmus + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} + +{-# LANGUAGE QuasiQuotes #-} + +module SHARC.ComputeField where + +import SHARC.Types +import SHARC.Word48 + +import Language.Literals.Binary +import Data.Map (fromList, findWithDefault) +import Data.Word (Word8, Word16, Word64) +import Data.Bits ((.&.), (.|.), shift, shiftL, shiftR) +import Text.Printf (printf) + +{- +The Compute Field + +See page 6-1 for full description. + +The compute field of an instruction is 23 bit wide and structured like this: + +1 unused bit +2 CU bits (00=ALU, 01=Multiplier, 10=Shifter) +8 bit opcode +3 register addresses (result, x operand, y operand), each 4 bit wide +-} + +-- 23 bit compute field +data ComputeField = ComputeField + { compFieldCU :: ComputationUnit + , compFieldOpCode :: OpCode + , compFieldRn :: Dreg + , compFieldRx :: Dreg + , compFieldRy :: Dreg + } + +data ComputationUnit = ALU | Multiplier | Shifter deriving Show +type OpCode = Word8 + +mkComputeField :: Word48 -> ComputeField +mkComputeField w = ComputeField cu op rn rx ry + where + word64 = word48ToWord64 w + w' = word64 `cutMask` 0x000000FFFFFF + cu = case w' `cutMask` [b| 011 0000 0000 0000 0000 0000 |] of + 0 -> ALU + 1 -> Multiplier + 2 -> Shifter + op = w' `cutMask` [b| 000 1111 1111 0000 0000 0000 |] + rn = mkDreg $ w' `cutMask` [b| 000 0000 0000 1111 0000 0000 |] + rx = mkDreg $ w' `cutMask` [b| 000 0000 0000 0000 1111 0000 |] + ry = mkDreg $ w' `cutMask` [b| 000 0000 0000 0000 0000 1111 |] + +instance Show ComputeField where + show cf = printer rn rx ry + where + dict = case compFieldCU cf of + ALU -> opCodesALU + Multiplier -> opCodesMultiplier + Shifter -> opCodesShifter + rn = show (compFieldRn cf) + rx = show (compFieldRx cf) + ry = show (compFieldRy cf) + def = rawPrintCF (show (compFieldCU cf)) (compFieldOpCode cf) + rawPrintCF cu op rn rx ry = printf "[%s] %s = %s [0x%02X] %s" cu rn rx op ry + printer = findWithDefault def (compFieldOpCode cf) dict + +-- special type for Type 6 instruction +type ShiftOp = Word8 +data ImmediateShift = ImmediateShift + ShiftOp {-6 bits-} + Word16 {-dependent on shiftop: either 6 bit shift value + 6 bit length; or 8 bit value-} + Dreg {-4 bit Rn register-} + Dreg {-4 bit Rx register-} + +-- TODO +instance Show ImmediateShift where + show (ImmediateShift op dat rn rx) = + "[" ++ show rn ++ " = " ++ printf "0x%02X" op ++ " " ++ show rx ++ " data:" ++ printf "0x%02X" dat ++ "]" + + + +opCodesALU = fromList + -- fixed point ALU operations (table 6-1) + [ (0, \n x y -> "") -- print nothing if the opcode is empty + , ([b| 0000 0001 |], \n x y -> n ++ " = " ++ x ++ " + " ++ y) -- Rn = Rx + Ry + , ([b| 0000 0010 |], \n x y -> n ++ " = " ++ x ++ " - " ++ y) -- Rn = Rx – Ry + , ([b| 0000 0101 |], \n x y -> n ++ " = " ++ x ++ " + " ++ y ++ " + CI") -- Rn = Rx + Ry + CI + , ([b| 0000 0110 |], \n x y -> n ++ " = " ++ x ++ " - " ++ y ++ " + CI - 1") -- Rn = Rx – Ry + CI – 1 + , ([b| 0000 1001 |], \n x y -> n ++ " = (" ++ x ++ " + " ++ y ++ ")/2") -- Rn = (Rx + Ry)/2 + , ([b| 0000 1010 |], \n x y -> "COMP(" ++ x ++ ", " ++ y ++ ")") -- COMP(Rx, Ry) + , ([b| 0000 1011 |], \n x y -> "COMPU(" ++ x ++ ", " ++ y ++ ")") -- COMPU(Rx, Ry) + , ([b| 0010 0101 |], \n x y -> n ++ " = " ++ x ++ " + CI") -- Rn = Rx + CI + , ([b| 0010 0110 |], \n x y -> n ++ " = " ++ x ++ " + CI - 1") -- Rn = Rx + CI – 1 + , ([b| 0010 1001 |], \n x y -> n ++ " = " ++ x ++ " + 1") -- Rn = Rx + 1 + , ([b| 0010 1010 |], \n x y -> n ++ " = " ++ x ++ " - 1") -- Rn = Rx – 1 + , ([b| 0010 0010 |], \n x y -> n ++ " = - " ++ x) -- Rn = – Rx + , ([b| 0011 0000 |], \n x y -> n ++ " = ABS " ++ x) -- Rn = ABS Rx + , ([b| 0010 0001 |], \n x y -> n ++ " = PASS " ++ x) -- Rn = PASS Rx + , ([b| 0100 0000 |], \n x y -> n ++ " = " ++ x ++ " AND " ++ y) -- Rn = Rx AND Ry + , ([b| 0100 0001 |], \n x y -> n ++ " = " ++ x ++ " OR " ++ y) -- Rn = Rx OR Ry + , ([b| 0100 0010 |], \n x y -> n ++ " = " ++ x ++ " XOR " ++ y) -- Rn = Rx XOR Ry + , ([b| 0100 0011 |], \n x y -> n ++ " = NOT " ++ x) -- Rn = NOT Rx + , ([b| 0110 0001 |], \n x y -> n ++ " = MIN(" ++ x ++ ", " ++ y ++ ")") -- Rn = MIN(Rx, Ry) + , ([b| 0110 0010 |], \n x y -> n ++ " = MAX(" ++ x ++ ", " ++ y ++ ")") -- Rn = MAX(Rx, Ry) + , ([b| 0110 0011 |], \n x y -> n ++ " = CLIP " ++ x ++ " BY " ++ y) -- Rn = CLIP Rx BY Ry + -- floating-point ALU operations (table 6-2) + , ([b| 1000 0001 |], \n x y -> n ++ " = " ++ x ++ " + " ++ y) -- Fn = Fx + Fy + , ([b| 1000 0010 |], \n x y -> n ++ " = " ++ x ++ " - " ++ y) -- Fn = Fx – Fy + , ([b| 1001 0001 |], \n x y -> n ++ " = ABS (" ++ x ++ " + " ++ y ++ ")") -- Fn = ABS (Fx + Fy) + , ([b| 1001 0010 |], \n x y -> n ++ " = ABS (" ++ x ++ " - " ++ y ++ ")") -- Fn = ABS (Fx – Fy) + , ([b| 1000 1001 |], \n x y -> n ++ " = (" ++ x ++ " + " ++ y ++ ")/2") -- Fn = (Fx + Fy)/2 + , ([b| 1000 1010 |], \n x y -> n ++ " = COMP(" ++ x ++ ", " ++ y ++ ")") -- Fn = COMP(Fx, Fy) + , ([b| 1010 0010 |], \n x y -> n ++ " = -" ++ x) -- Fn = –Fx + , ([b| 1011 0000 |], \n x y -> n ++ " = ABS " ++ x) -- Fn = ABS Fx + , ([b| 1010 0001 |], \n x y -> n ++ " = PASS " ++ x) -- Fn = PASS Fx + , ([b| 1010 0101 |], \n x y -> n ++ " = RND " ++ x) -- Fn = RND Fx + , ([b| 1011 1101 |], \n x y -> n ++ " = SCALB " ++ x ++ " BY " ++ y) -- Fn = SCALB Fx BY Ry + , ([b| 1010 1101 |], \n x y -> n ++ " = MANT " ++ x) -- Rn = MANT Fx + , ([b| 1100 0001 |], \n x y -> n ++ " = LOGB " ++ x) -- Rn = LOGB Fx + , ([b| 1101 1001 |], \n x y -> n ++ " = FIX " ++ x ++ " BY " ++ y) -- Rn = FIX Fx BY Ry + , ([b| 1100 1001 |], \n x y -> n ++ " = FIX " ++ x) -- Rn = FIX Fx + , ([b| 1101 1101 |], \n x y -> n ++ " = TRUNC " ++ x ++ " BY " ++ y) -- Rn = TRUNC Fx BY Ry + , ([b| 1100 1101 |], \n x y -> n ++ " = TRUNC " ++ x) -- Rn = TRUNC Fx + , ([b| 1101 1010 |], \n x y -> n ++ " = FLOAT " ++ x ++ " BY " ++ y) -- Fn = FLOAT Rx BY Ry + , ([b| 1100 1010 |], \n x y -> n ++ " = FLOAT " ++ x) -- Fn = FLOAT Rx + , ([b| 1100 0100 |], \n x y -> n ++ " = RECIPS " ++ x) -- Fn = RECIPS Fx + , ([b| 1100 0101 |], \n x y -> n ++ " = RSQRTS " ++ x) -- Fn = RSQRTS Fx + , ([b| 1110 0000 |], \n x y -> n ++ " = " ++ x ++ " COPYSIGN " ++ y) -- Fn = Fx COPYSIGN Fy + , ([b| 1110 0001 |], \n x y -> n ++ " = MIN(" ++ x ++ ", " ++ y ++ ")") -- Fn = MIN(Fx, Fy) + , ([b| 1110 0010 |], \n x y -> n ++ " = MAX(" ++ x ++ ", " ++ y ++ ")") -- Fn = MAX(Fx, Fy) + , ([b| 1110 0011 |], \n x y -> n ++ " = CLIY " ++ x ++ " BY " ++ y) -- Fn = CLIP Fx BY Fy + ] + + +opCodesMultiplier = fromList [] -- TODO +{- +-- fixed-point multiplier operations (table 6-3) +-- TODO: check table 6-5 and table 6-6 for y/x/f/r flags +[b| 01yx f00r ] -- on page 6-56 -- Rn = Rx*Ry mod2 +[b| 01yx f10r ] -- on page 6-56 -- MRF = Rx*Ry mod2 +[b| 01yx f11r ] -- on page 6-56 -- MRB = Rx*Ry mod2 +[b| 10yx f00r ] -- on page 6-57 -- Rn = MRF +Rx*Ry mod2 +[b| 10yx f01r ] -- on page 6-57 -- Rn = MRB +Rx*Ry mod2 +[b| 10yx f10r ] -- on page 6-57 -- MRF = MRF +Rx*Ry mod2 +[b| 10yx f11r ] -- on page 6-57 -- MRB = MRB +Rx*Ry mod2 +[b| 11yx f00r ] -- on page 6-58 -- Rn = MRF –Rx*Ry mod2 +[b| 11yx f01r ] -- on page 6-58 -- Rn = MRB –Rx*Ry mod2 +[b| 11yx f10r ] -- on page 6-58 -- MRF = MRF –Rx*Ry mod2 +[b| 11yx f11r ] -- on page 6-58 -- MRB = MRB –Rx*Ry mod2 +[b| 0000 f00x ] -- on page 6-59 -- Rn = SAT MRF mod1 +[b| 0000 f01x ] -- on page 6-59 -- Rn = SAT MRB mod1 +[b| 0000 f10x ] -- on page 6-59 -- MRF = SAT MRF mod1 +[b| 0000 f11x ] -- on page 6-59 -- MRB = SAT MRB mod1 +[b| 0001 100x ] -- on page 6-60 -- Rn =RND MRF mod1 +[b| 0001 101x ] -- on page 6-60 -- Rn = RND MRB mod1 +[b| 0001 110x ] -- on page 6-60 -- MRF = RND MRF mod1 +[b| 0001 111x ] -- on page 6-60 -- MRB = RND MRB mod1 +[b| 0001 0100 ] -- on page 6-61 -- MRF = 0 +[b| 0001 0110r ] -- on page 6-61 -- MRB = 0 +-- MR = Rn on page 6-62 +-- Rn = MR on page 6-62 + +-- floating-point multiplier operations (table 6-4) +[b| 0011 0000 ] -- on page 6-64 -- Fn = Fx*Fy +-} + + +opCodesShifter = fromList + -- shifter operations (table 6-8) + [ ([b| 0000 0000 |], \n x y -> n ++ " = LSHIFT " ++ x ++ " BY " ++ y) -- Rn = LSHIFT Rx BY Ry| + , ([b| 0010 0000 |], \n x y -> n ++ " = OR LSHIFT " ++ x ++ " BY " ++ y) -- Rn = Rn OR LSHIFT Rx BY Ry| + , ([b| 0000 0100 |], \n x y -> n ++ " = ASHIFT " ++ x ++ " BY " ++ y) -- Rn = ASHIFT Rx BY Ry| + , ([b| 0010 0100 |], \n x y -> n ++ " = " ++ n ++ " OR ASHIFT " ++ x ++ " BY "++ y) -- Rn = Rn OR ASHIFT Rx BY Ry| + , ([b| 0000 1000 |], \n x y -> n ++ " = ROT " ++ x ++ " BY " ++ y) -- Rn = ROT Rx BY Ry| + , ([b| 1100 0100 |], \n x y -> n ++ " = BCLR " ++ x ++ " BY " ++ y) -- Rn = BCLR Rx BY Ry| + , ([b| 1100 0000 |], \n x y -> n ++ " = BSET " ++ x ++ " BY " ++ y) -- Rn = BSET Rx BY Ry| + , ([b| 1100 1000 |], \n x y -> n ++ " = BTGL " ++ x ++ " BY " ++ y) -- Rn = BTGL Rx BY Ry| + , ([b| 1100 1100 |], \n x y -> "BTST " ++ x ++ " BY " ++ y) -- BTST Rx BY Ry| + , ([b| 0100 0100 |], \n x y -> n ++ " = FDEP " ++ x ++ " BY " ++ y) -- Rn = FDEP Rx BY Ry|: + , ([b| 0110 0100 |], \n x y -> n ++ " = " ++ n ++ " OR FDEP " ++ x ++ " BY " ++ y) -- Rn = Rn OR FDEP Rx BY Ry|: + , ([b| 0100 1100 |], \n x y -> n ++ " = FDEP " ++ x ++ " BY " ++ y) -- Rn = FDEP Rx BY Ry|: (SE) + , ([b| 0110 1100 |], \n x y -> n ++ " = " ++ n ++ " OR FDEP " ++ x ++ " BY " ++ y) -- Rn = Rn OR FDEP Rx BY Ry|:(SE) + , ([b| 0100 0000 |], \n x y -> n ++ " = FEXT " ++ x ++ " BY " ++ y) -- Rn = FEXT RX BY Ry|: + , ([b| 0100 1000 |], \n x y -> n ++ " = FEXT " ++ x ++ " BY " ++ y ++ " (SE)") -- Rn = FEXT Rx BY Ry|: (SE) + , ([b| 1000 0000 |], \n x y -> n ++ " = EXP " ++ x) -- Rn = EXP Rx + , ([b| 1000 0100 |], \n x y -> n ++ " = EXP " ++ x ++ " (EX)") -- Rn = EXP Rx (EX) + , ([b| 1000 1000 |], \n x y -> n ++ " = LEFTZ " ++ x) -- Rn = LEFTZ Rx + , ([b| 1000 1100 |], \n x y -> n ++ " = LEFTO " ++ x) -- Rn = LEFTO Rx + , ([b| 1001 0000 |], \n x y -> n ++ " = FPACK " ++ x) -- Rn = FPACK Fx + , ([b| 1001 0100 |], \n x y -> n ++ " = FUNPACK " ++ x) -- Fn = FUNPACK Rx + ] diff --git a/SHARC/Instruction.hs b/SHARC/Instruction.hs new file mode 100644 index 0000000..5c3b1bf --- /dev/null +++ b/SHARC/Instruction.hs @@ -0,0 +1,500 @@ +{- + This file is part of shark-disassembler. + + Copyright (C) 2014 Ricardo Wurmus + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} + +{-# LANGUAGE QuasiQuotes #-} + +module SHARC.Instruction where + +import SHARC.Types +import SHARC.Word48 +import SHARC.ComputeField + +import Language.Literals.Binary +import Data.Bits ((.&.), (.|.), xor, shift, shiftL, shiftR, testBit) +import Data.Word +import Data.List (intercalate) +import Text.Printf (printf) +import Data.Binary.Get + + +data Instruction = Type1 Word48 + | Type2 Cond ComputeField + | Type3 + Cond + ComputeField + Ireg + Mreg + Ureg + AccessType + Memory + WordAccess + Update + | Type4 + Cond + ComputeField + Word8 {-6 bit data-} + Dreg + Ireg + AccessType + Memory + Update + | Type5Transfer + Cond + ComputeField + Ureg {-source register, 7 bit-} + Ureg {-destination register, 7 bit-} + | Type5Swap + Cond + ComputeField + Dreg {-x, 4 bit-} + Dreg {-y, 4 bit-} + | Type6WithDataAccess -- with data access + Cond + ImmediateShift + Dreg + Ireg + Mreg + AccessType + Memory + | Type6WithoutDataAccess -- without data access + Cond + ImmediateShift + | Type7 Word48 + | Type8 + BranchType + Cond + Address24 + Bool {-loop abort-} + Bool {-branch delayed or not-} + Bool {-clear interrupt-} + | Type9 Word48 + | Type10 Word48 + | Type11 + ReturnSource {- subroutine or interrupt -} + Cond + Bool {-return delayed or not-} + Bool {-else clause used or not-} + Bool {-loop reentry modifier specified or not-} + ComputeField + | Type12Ureg Ureg Address24 + | Type12Immediate Word16 Address24 + | Type13 TermCond Address24 + | Type14 AccessType Memory WordAccess Ureg Address32 + | Type15 Word48 + | Type16 Word48 + | Type17 Ureg Word32 + | Type18 BitOp Sreg Word32 + | Type19 Word48 + | Type20 + ([String], [String]) {-list of pushes and pops-} + Bool {-cause a cash flush-} + | NOP -- Type 21 + | IDLE -- Type 22 + | Type25 Word48 + | UndefinedInstruction Word48 + | InvalidInstruction Word48 + +instance Show Instruction where + show NOP = "NOP" + show IDLE = "IDLE" + show (UndefinedInstruction w) = "!! UNDEFINED: " ++ show w + show (InvalidInstruction w) = "!! INVALID: " ++ show w + show t = let f = printf "%-46s; %s" in case t of + Type1 w -> f (showType1 w) "type 1" + Type2{} -> f (showType2 t) "type 2" + Type3{} -> f (showType3 t) "type 3" + Type4{} -> f (showType4 t) "type 4" + Type5Transfer{} -> f (showType5 t) "type 5 (transfer)" + Type5Swap{} -> f (showType5 t) "type 5 (swap)" + Type6WithDataAccess{} -> f (showType6 t) "type 6 (with data access)" + Type6WithoutDataAccess{} -> f (showType6 t) "type 6 (without data access)" + Type7 w -> f (showType7 w) "type 7" + Type8{} -> f (showType8 t) "type 8" + Type9 w -> f (showType9 w) "type 9" + Type10 w -> f (showType10 w) "type 10" + Type11{} -> f (showType11 t) "type 11" + Type12Immediate{} -> f (showType12 t) "type 12 (immediate)" + Type12Ureg{} -> f (showType12 t) "type 12 (from ureg)" + Type13{} -> f (showType13 t) "type 13" + Type14{} -> f (showType14 t) "type 14" + Type15 w -> f (showType15 w) "type 15" + Type16 w -> f (showType16 w) "type 16" + Type17{} -> f (showType17 t) "type 17" + Type18{} -> f (showType18 t) "type 18" + Type19 w -> f (showType19 w) "type 19" + Type20{} -> f (showType20 t) "type 20" + Type25 w -> f (showType25 w) "type 25" + + +showType1 w = " TODO: " ++ show w + +showType2 (Type2 cond cf) = show cond ++ show cf + +showType3 (Type3 cond compute ireg mreg ureg rw mem wa up) = + show cond ++ show compute ++ assignment ++ flag + where + imOrder = case up of + PreModify -> [show mreg, show ireg] + PostModify -> [show ireg, show mreg] + pair = "(" ++ intercalate ", " imOrder ++ ")" + mem' = case mem of + Prog -> "PM" ++ pair + Data -> "DM" ++ pair + assignment = case rw of + Read -> show ureg ++ "=" ++ mem' + Write -> mem' ++ "=" ++ show ureg + flag = case wa of + LW -> " (LW)" + _ -> "" + +showType4 (Type4 cond compute dat dreg ireg rw mem up) = + show cond ++ show compute ++ assignment + where + -- print 6 bit data as two's complement + dat' = if dat `testBit` 5 + then '-' : show (dat `xor` 0x3F) + else show dat + order = case up of + PreModify -> [dat', show ireg] + PostModify -> [show ireg, dat'] + pair = "(" ++ intercalate ", " order ++ ")" + mem' = case mem of + Prog -> "PM" ++ pair + Data -> "DM" ++ pair + assignment = case rw of + Read -> show dreg ++ "=" ++ mem' + Write -> mem' ++ "=" ++ show dreg + +showType5 (Type5Transfer cond compute src dest) = + optional ++ sep ++ show dest ++ "=" ++ show src + where + optional = show cond ++ show compute + sep = if optional == "" then "" else ", " +showType5 (Type5Swap cond compute x y) = + optional ++ sep ++ show x ++ "<->" ++ show y + where + optional = show cond ++ show compute + sep = if optional == "" then "" else ", " + +showType6 (Type6WithDataAccess cond shiftField dreg ireg mreg rw mem) = + show cond ++ show shiftField ++ assignment + where + pair = "(" ++ intercalate ", " [show ireg, show mreg] ++ ")" + mem' = case mem of + Prog -> "PM" ++ pair + Data -> "DM" ++ pair + assignment = case rw of + Read -> show dreg ++ "=" ++ mem' + Write -> mem' ++ "=" ++ show dreg + +showType6 (Type6WithoutDataAccess cond shiftField) = + show cond ++ show shiftField + +showType7 w = " TODO: " ++ show w + +-- TODO: if Call, ignore LA and CI +-- TODO: flag handling is ugly +showType8 (Type8 t cond addr a d c) = show cond ++ t' ++ flags + where + t' = case t of + Jump -> "JUMP " ++ show addr + Call -> "CALL " ++ show addr + a' = if a then "LA" else "" + d' = if d then "DB" else "" + c' = if c then "CI" else "" + flags = if a || d || c + then " (" ++ intercalate ", " (filter (/= "") [a', d', c']) ++ ")" + else "" + +showType9 w = " TODO: " ++ show w + +showType10 w = " TODO: " ++ show w + +showType11 (Type11 rs cond d e l cf) = show cond ++ rs' ++ flags ++ elseCompute + where + rs' = case rs of + Subroutine -> "RTS" + Interrupt -> "RTI" + -- TODO: this is ugly + d' = if d then "DB" else "" + l' = if l then "LR" else "" + flags = if d || l + then " (" ++ intercalate ", " (filter (/= "") [d', l']) ++ ")" + else "" + e' = if e then ", ELSE " else ", " + -- do not print at all if opcode in compute field is empty + -- TODO: can this be encoded in the type instead of doing an ugly string comparison? + elseCompute = if show cf == "" then "" else e' ++ show cf + +showType12 (Type12Immediate dat reladdr) = + "LNCTR=" ++ show dat ++ ", DO " ++ show reladdr ++ " UNTIL LCE" +showType12 (Type12Ureg ureg reladdr) = + "LNCTR=" ++ show ureg ++ ", DO " ++ show reladdr ++ " UNTIL LCE" + +showType13 (Type13 term reladdr) = + "DO " ++ show reladdr ++ " UNTIL " ++ show term + +showType14 (Type14 rw mem wa ureg addr) = lhs ++ " = " ++ rhs ++ lwflag + where + lwflag = case wa of + LW -> " (LW)" + _ -> "" + memloc = case mem of + Data -> "DM(" ++ show addr ++ ")" + Prog -> "PM(" ++ show addr ++ ")" + lhs = case rw of + Write -> memloc + Read -> show ureg + rhs = case rw of + Write -> show ureg + Read -> memloc + +showType15 w = " TODO: " ++ show w + +showType16 w = " TODO: " ++ show w + +showType17 (Type17 ureg dat) = show ureg ++ " = " ++ printf "0x%08X" dat + +showType18 (Type18 bop sreg w) = + "BIT " ++ show bop ++ " " ++ show sreg ++ " " ++ printf "0x%08X" w + +showType19 w = " TODO: " ++ show w + +showType20 (Type20 (pushes,pops) fc) = intercalate ", " (pu ++ po ++ [flush]) + where + pu = map (\x -> "PUSH " ++ x) pushes + po = map (\x -> "POP " ++ x) pops + flush = if fc then "FLUSH CACHE" else "" + +showType25 w = " TODO: " ++ show w + + + +-- TODO +parseType1 = Type1 + +parseType2 w = Type2 cond (mkComputeField w) + where + cond = mkCond w + +parseType3 w = Type3 cond compute ireg mreg ureg rw mem wa up + where + w64 = word48ToWord64 w + cond = mkCond w + compute = mkComputeField w + ireg = mkIreg $ w64 `cutMask` [b| 000 0 111 000 00000 000 0000000 0000000 00000000 00000000 |] + mreg = mkMreg $ w64 `cutMask` [b| 000 0 000 111 00000 000 0000000 0000000 00000000 00000000 |] + ureg = mkUreg $ w64 `cutMask` [b| 000 0 000 000 00000 000 1111111 0000000 00000000 00000000 |] + rw = if w64 `testBit` 31 then Read else Write + mem = if w64 `testBit` 32 then Data else Prog + wa = if w64 `testBit` 30 then LW else NW + up = if w64 `testBit` 44 then PostModify else PreModify + +parseType4 w = Type4 cond compute dat dreg ireg rw mem up + where + w64 = word48ToWord64 w + cond = mkCond w + compute = mkComputeField w + dat = w64 `cutMask` 0x0001F8000000 + dreg = mkDreg $ w64 `cutMask` 0x000007800000 + ireg = mkIreg $ w64 `cutMask` [b| 000 0 111 000 00000 000 0000000 0000000 00000000 00000000 |] + rw = if w64 `testBit` 39 then Read else Write + mem = if w64 `testBit` 40 then Data else Prog + up = if w64 `testBit` 38 then PostModify else PreModify + +parseType5 w = if w64 `testBit` 43 + then let + x = mkDreg $ w64 `cutMask` 0x000007800000 + y = mkDreg $ w64 `cutMask` 0x03C000000000 + in Type5Swap cond compute x y + else let + src = mkUreg $ ((w64 `cutMask` 0x07C000000000) `shiftL` 2) .|. (w64 `cutMask` 0x000180000000) + dest = mkUreg $ w64 `cutMask` 0x00003F800000 + in Type5Transfer cond compute src dest + where + w64 = word48ToWord64 w + cond = mkCond w + compute = mkComputeField w + +parseType6 w = if w64 `testBit` 47 + then let -- with data access + dreg = mkDreg $ w64 `cutMask` [b| 0000 000 000 00000 00 0000 1111 0 000000 00000000 0000 0000 |] + ireg = mkIreg $ w64 `cutMask` [b| 0000 111 000 00000 00 0000 0000 0 000000 00000000 0000 0000 |] + mreg = mkMreg $ w64 `cutMask` [b| 0000 000 111 00000 00 0000 0000 0 000000 00000000 0000 0000 |] + rw = if w64 `testBit` 31 then Read else Write + mem = if w64 `testBit` 32 then Data else Prog + in + Type6WithDataAccess cond shiftField dreg ireg mreg rw mem + else -- without data access + Type6WithoutDataAccess cond shiftField + where + w64 = word48ToWord64 w + cond = mkCond w + shiftField = ImmediateShift op dat rn rx + op = w64 `cutMask` 0x0000003F0000 + dat = (w64 `cutMask` 0x000078000000) `shiftL` 8 .|. (w64 `cutMask` 0x00000000FF00) + rn = Dreg $ w64 `cutMask` 0xF0 + rx = Dreg $ w64 `cutMask` 0x0F + +-- TODO +parseType7 = Type7 + +parseType8 :: (Word32 -> Address24) -> Word48 -> Instruction +parseType8 addressConstr w = Type8 t cond addr a d c + where + w64 = word48ToWord64 w + t = if w64 `testBit` 39 then Jump else Call + cond = mkCond w + addr = addressConstr $ w64 `cutMask` 0x000000FFFFFF + a = w64 `testBit` 38 -- loop abort + d = w64 `testBit` 26 -- branch delayed or not + c = w64 `testBit` 24 -- clear interrupt + +-- TODO +parseType9 = Type9 + +-- TODO +parseType10 = Type10 + +parseType11 rs w = Type11 rs cond d e l cf where + cond = mkCond w + w64 = word48ToWord64 w + d = w64 `testBit` 26 -- return delayed + e = w64 `testBit` 25 -- else clause + l = w64 `testBit` 24 -- loop reentry + cf = mkComputeField w + +parseType12 w = if w64 `testBit` 40 + then let -- loop counter load from a Ureg + ureg = mkUreg $ w64 `cutMask` 0x007F00000000 + in Type12Ureg ureg reladdr + else let -- immediate loop counter load + dat = w64 `cutMask` 0x00FFFF000000 + in Type12Immediate dat reladdr + where + w64 = word48ToWord64 w + reladdr = RelAddress24 $ w64 `cutMask` 0xFFFFFF -- lowest 24 bit + +parseType13 w = Type13 term reladdr + where + w64 = word48ToWord64 w + term = mkTermCond w + reladdr = RelAddress24 $ w64 `cutMask` 0xFFFFFF -- lowest 24 bit + +parseType14 w = Type14 rw mem wa ureg addr + where + w64 = word48ToWord64 w + rw = if w64 `testBit` 40 then Read else Write + mem = if w64 `testBit` 41 then Data else Prog + wa = if w64 `testBit` 39 then LW else NW + ureg = mkUreg $ w64 `cutMask` 0x00EF00000000 + addr = Address32 $ w64 `cutMask` 0x0000FFFFFFFF + +-- TODO +parseType15 = Type15 +parseType16 = Type16 + +parseType17 w = Type17 ureg dat + where + w64 = word48ToWord64 w + dat = w64 `cutMask` 0x0000FFFFFFFF + ureg = mkUreg $ w64 `cutMask` 0x00EF00000000 + +parseType18 w = Type18 bop sreg dat + where + w64 = word48ToWord64 w + dat = w64 `cutMask` 0x0000FFFFFFFF + bop = [ SET, CLR, TGL, TST, XOR ] !! (w64 `cutMask` 0x00E000000000) + sreg = mkSreg $ w64 `cutMask` 0x00FF00000000 + +-- TODO +parseType19 = Type19 + +parseType20 w = Type20 (pushes, pops) fc + where + w64 = word48ToWord64 w + lpu = if w64 `testBit` 39 then "LOOP" else "" + lpo = if w64 `testBit` 38 then "LOOP" else "" + spu = if w64 `testBit` 37 then "STS" else "" + spo = if w64 `testBit` 36 then "STS" else "" + ppu = if w64 `testBit` 35 then "PCSTK" else "" + ppo = if w64 `testBit` 34 then "PCSTK" else "" + pushes = filter (/= "") [lpu, spu, ppu] + pops = filter (/= "") [lpo, spo, ppo] + fc = w64 `testBit` 33 + +-- TODO +parseType25 = Type25 + + +parseInstruction :: Word48 -> Instruction +parseInstruction word = + let + w64 = word48ToWord64 word + b1 = (w64 `cutMask` 0xFF0000000000) :: Word8 + b2 = (w64 `cutMask` 0x00FF00000000) :: Word8 + in case fromIntegral b1 of + [b| 0000 0000 |] -> if b2 `testBit` 7 + then IDLE + else NOP + [b| 0000 0001 |] -> parseType2 word + [b| 0000 0010 |] -> parseType6 word + [b| 0000 0011 |] -> UndefinedInstruction word + [b| 0000 0100 |] -> parseType7 word + [b| 0000 0101 |] -> UndefinedInstruction word + [b| 0000 0110 |] -> parseType8 Address24 word + [b| 0000 0111 |] -> parseType8 RelAddress24 word + [b| 0000 1000 |] -> parseType9 word + [b| 0000 1001 |] -> parseType9 word + [b| 0000 1010 |] -> parseType11 Subroutine word + [b| 0000 1011 |] -> parseType11 Interrupt word + [b| 0000 1100 |] -> parseType12 word + [b| 0000 1101 |] -> parseType12 word + [b| 0000 1110 |] -> parseType13 word + [b| 0000 1111 |] -> parseType17 word + + [b| 0001 0100 |] -> parseType18 word + [b| 0001 0101 |] -> UndefinedInstruction word + [b| 0001 0110 |] -> parseType19 word + [b| 0001 0111 |] -> parseType20 word + [b| 0001 1000 |] -> parseType25 word + + -- check six bit prefix + _ -> case b1 .&. 0xFC of + [b| 0001 0000 |] -> parseType14 word + -- check four bit prefix + _ -> case b1 .&. 0xF0 of + [b| 0110 0000 |] -> parseType4 word + [b| 0111 0000 |] -> parseType5 word + [b| 1000 0000 |] -> parseType6 word + [b| 1001 0000 |] -> parseType16 word + -- check three bit prefix + _ -> case b1 .&. 0xE0 of + [b| 001 00000 |] -> parseType1 word + [b| 010 00000 |] -> parseType3 word + [b| 101 00000 |] -> parseType15 word + [b| 110 00000 |] -> parseType10 word + [b| 111 00000 |] -> parseType10 word + _ -> InvalidInstruction word + +getInstruction :: Get Instruction +getInstruction = fmap parseInstruction getPackedWord48 + +printInstructionWithAddr :: (Word64, Instruction) -> IO () +printInstructionWithAddr (addr, instr) = printf "0x%05X: %s\n" addr (show instr) diff --git a/SHARC/Kernel.hs b/SHARC/Kernel.hs new file mode 100644 index 0000000..c074f36 --- /dev/null +++ b/SHARC/Kernel.hs @@ -0,0 +1,51 @@ +{- + This file is part of shark-disassembler. + + Copyright (C) 2014 Ricardo Wurmus + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} + +{-# LANGUAGE OverloadedStrings #-} + +module SHARC.Kernel where + +import SHARC.Types +import SHARC.Word48 +import SHARC.Instruction + +import Control.Monad (replicateM,mapM_) +import Data.Word (Word64) +import Data.Binary.Get +import qualified Data.ByteString.Lazy as B + + +type Kernel = [Instruction] + +-- the boot kernel is 256 48-bit words long, +-- each 48-bit is read as six 8-bit packages (LSB first) +getKernel :: Get Kernel +getKernel = replicateM 256 getInstruction + +parseKernel :: B.ByteString -> Kernel +parseKernel = runGet getKernel + +-- p.609, hw.pdf +-- ivt_start_address = 0x90000 :: Word64 +-- ivt_end_address = 0x900ff :: Word64 +printKernel :: B.ByteString -> IO () +printKernel bs = mapM_ printInstructionWithAddr $ zip [offset..] kernel + where + offset = 0x90000 :: Word64 + kernel = parseKernel bs diff --git a/SHARC/Types.hs b/SHARC/Types.hs new file mode 100644 index 0000000..47e4686 --- /dev/null +++ b/SHARC/Types.hs @@ -0,0 +1,184 @@ +{- + This file is part of shark-disassembler. + + Copyright (C) 2014 Ricardo Wurmus + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} + +module SHARC.Types where + +import SHARC.Word48 + +import Data.Word +import Data.Map (fromList, findWithDefault) +import Data.Bits ((.&.), (.|.), xor, testBit, shift, shiftR) +import Text.Printf (printf) + +-- TODO: check other register assigments as well! They may need to be shifted first. + + +data Cond = Cond Word8 +-- the 5 bit condition codes are at an odd position in the byte, so we +-- have to cut them out [ 00111110 ] +-- TODO: valid values go from 0 to 31, restrict! +mkCond :: Word48 -> Cond +mkCond w = Cond $ w64 `cutMask` 0x003E00000000 + where + w64 = word48ToWord64 w + +data TermCond = TermCond Word8 +-- the 5 bit condition codes are at an odd position in the byte, so we +-- have to cut them out [ 00111110 ] +-- TODO: valid values go from 0 to 31, restrict! +mkTermCond :: Word48 -> TermCond +mkTermCond w = TermCond $ w64 `cutMask` 0x003E00000000 + where + w64 = word48ToWord64 w + +-- from table 1-4 (isr.pdf) "Conditional Execution Codes Summary" +condCodes = [ + "EQ", + "NE", + "GT", + "LT", + "GE", + "LE", + "AC", + "NOT AC", + "AV", + "NOT AV", + "MV", + "NOT MV", + "MS", + "NOT MS", + "SV", + "NOT SV", + "SZ", + "NOT SZ", + "TF", + "NOT TF", + "FLAG0_IN", + "NOT FLAG0_IN", + "FLAG1_IN", + "NOT FLAG1_IN", + "FLAG2_IN", + "NOT FLAG2_IN", + "FLAG3_IN", + "NOT FLAG3_IN", + "BM", + "NOT BM", + "NOT ICE", + "TRUE" ] + +condCodeMap = fromList $ zip [0..] condCodes +termCodeMap = fromList $ zip [0..] $ (init . init) condCodes ++ ["LCE", "FOREVER"] + +instance Show Cond where + -- do not print if code is "TRUE" (31) + show (Cond n) = if n == 31 then "" + else "IF " ++ findWithDefault (printf "0x%02X" n) n condCodeMap ++ " " + +instance Show TermCond where + show (TermCond n) = findWithDefault (printf "0x%02X" n) n termCodeMap + + +data Ireg = Ireg Word8 +mkIreg :: Word8 -> Ireg +mkIreg n = Ireg $ n .&. 0x07 +instance Show Ireg where + show (Ireg n) = printf "I%d" n + +data Mreg = Mreg Word8 +mkMreg :: Word8 -> Mreg +mkMreg n = Mreg $ n .&. 0x07 +instance Show Mreg where + show (Mreg n) = printf "M%d" n + +-- TODO: see table 1-8 and 1-11 in isr.pdf +-- 7 bit universal register +data Ureg = Ureg Word8 +mkUreg :: Word8 -> Ureg +mkUreg n = Ureg $ n .&. 0xEF +instance Show Ureg where + show (Ureg n) = printf "0x%02X" n + +-- 4 bit system register +data Sreg = Sreg Word8 +mkSreg :: Word8 -> Sreg +mkSreg n = Sreg $ n .&. 0x0F +instance Show Sreg where + show (Sreg n) = printf "0x%01X" n + +-- 4 bit data register +data Dreg = Dreg Word8 +mkDreg :: Word8 -> Dreg +mkDreg n = Dreg $ n .&. 0x0F +instance Show Dreg where + show (Dreg n) = printf "R%d" n -- TODO: according to the docs this is R15-R0 *and* F15-F0 + +data Address24 = Address24 Word32 -- absolute 24 bit address + | RelAddress24 Word32 -- relative 24 bit address +data Address32 = Address32 Word32 -- absolute 32 bit address + | RelAddress32 Word32 -- relative 24 bit address + +instance Show Address24 where + show (Address24 w) = printf "0x%06X" w + show (RelAddress24 w) = printf "(PC,%s)" w' -- two's complement + where w' = if w `testBit` 23 then '-' : show (w `xor` 0xFFFFFF) else show w + +instance Show Address32 where + show (Address32 w) = printf "0x%08X" w + show (RelAddress32 w) = printf "(PC,%s)" w' -- two's complement + where w' = if w `testBit` 31 then '-' : show (w `xor` 0xFFFFFFFF) else show w + + +toWord32 :: (Word8, Word8, Word8, Word8) -> Word32 +toWord32 (a,b,c,d) = fromIntegral a `shift` 24 .|. + fromIntegral b `shift` 16 .|. + fromIntegral c `shift` 8 .|. + fromIntegral d + +data Update = PreModify -- 0, no update + | PostModify -- 1, with update + +-- TODO: check again Table 1-7 Opcode Acronyms to be sure that the mapping order is right! +type PushPops = ([String], [String]) + +data Memory = Data -- data memory + | Prog -- programme memory + deriving Show +data AccessType = Read | Write -- memory acces + deriving Show +data WordAccess = NW | LW -- LW forces a long word access when address is in normal word address + deriving Show + +data BranchAbsRel = Abs -- direct branch (absolute address) + | Rel -- PC-relative branch + deriving Show + +data BranchType = Jump + | Call + deriving Show + +data ReturnSource = Subroutine + | Interrupt + deriving Show + +data BitOp = SET + | CLR + | TGL + | TST + | XOR + deriving Show diff --git a/SHARC/Word48.hs b/SHARC/Word48.hs new file mode 100644 index 0000000..42e1075 --- /dev/null +++ b/SHARC/Word48.hs @@ -0,0 +1,58 @@ +{- + This file is part of shark-disassembler. + + Copyright (C) 2014 Ricardo Wurmus + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} + +module SHARC.Word48 where + +import Text.Printf (printf) +import Data.Word (Word8, Word64) +import Data.Bits ((.&.), (.|.), shiftL, shiftR, testBit) +import Data.Binary.Get +import Control.Monad (replicateM) + +data Word48 = Word48 (Word8, Word8, Word8, Word8, Word8, Word8) +instance Show Word48 where + show (Word48 (a,b,c,d,e,f)) = + unwords $ map (printf "0x%02X") [a,b,c,d,e,f] + +unpackWord8Word48 :: [Word8] -> Word48 +unpackWord8Word48 [a,b,c,d,e,f] = Word48 (f,e,d,c,b,a) + +getWord48 :: ([Word8] -> Word48) -> Get Word48 +getWord48 p = fmap p $ replicateM 6 getWord8 + +getPackedWord48 :: Get Word48 +getPackedWord48 = getWord48 unpackWord8Word48 + +word48ToWord64 :: Word48 -> Word64 +word48ToWord64 (Word48 (a,b,c,d,e,f)) = fromIntegral a `shiftL` 40 .|. + fromIntegral b `shiftL` 32 .|. + fromIntegral c `shiftL` 24 .|. + fromIntegral d `shiftL` 16 .|. + fromIntegral e `shiftL` 8 .|. + fromIntegral f + +-- apply mask and shift result to the very right +-- TODO: find a laxer type signature +cutMask :: Integral n => Word64 -> Word64 -> n +cutMask w mask = fromIntegral . fst $ until p shifter (w .&. mask, mask) + where + -- shift word by as much as we need to shift the mask to the very right + p (x, mask') = mask' `testBit` 0 + shifter (x, m) = (x `shiftR` 1, m `shiftR` 1) + diff --git a/Setup.hs b/Setup.hs new file mode 100644 index 0000000..9a994af --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/sharc-disassembler.cabal b/sharc-disassembler.cabal new file mode 100644 index 0000000..bcc9178 --- /dev/null +++ b/sharc-disassembler.cabal @@ -0,0 +1,23 @@ +name: sharc-disassembler +version: 0.0.0.1 +synopsis: disassembler for SHARC binaries +-- description: +homepage: http://elephly.net +license: GPL-3 +license-file: LICENSE +author: Ricardo Wurmus +maintainer: rekado plus code at elephly dot net +-- copyright: +category: Disassembler +build-type: Simple +cabal-version: >=1.8 + +Executable sharc-disassembler + Main-is: Main.hs + build-depends: base ==4.*, + containers, + text, + binary, + bytestring, + binary-literal-qq + -- cgit v1.2.3