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-rw-r--r--LICENSE675
-rw-r--r--Main.hs28
-rw-r--r--SHARC/ComputeField.hs210
-rw-r--r--SHARC/Instruction.hs500
-rw-r--r--SHARC/Kernel.hs51
-rw-r--r--SHARC/Types.hs184
-rw-r--r--SHARC/Word48.hs58
-rw-r--r--Setup.hs2
-rw-r--r--sharc-disassembler.cabal23
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diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ 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 <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. 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
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
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 <http://www.gnu.org/licenses/>.
+-}
+
+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 <http://www.gnu.org/licenses/>.
+-}
+
+{-# 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|<data8>
+ , ([b| 0010 0000 |], \n x y -> n ++ " = OR LSHIFT " ++ x ++ " BY " ++ y) -- Rn = Rn OR LSHIFT Rx BY Ry|<data8>
+ , ([b| 0000 0100 |], \n x y -> n ++ " = ASHIFT " ++ x ++ " BY " ++ y) -- Rn = ASHIFT Rx BY Ry|<data8>
+ , ([b| 0010 0100 |], \n x y -> n ++ " = " ++ n ++ " OR ASHIFT " ++ x ++ " BY "++ y) -- Rn = Rn OR ASHIFT Rx BY Ry|<data8>
+ , ([b| 0000 1000 |], \n x y -> n ++ " = ROT " ++ x ++ " BY " ++ y) -- Rn = ROT Rx BY Ry|<data8>
+ , ([b| 1100 0100 |], \n x y -> n ++ " = BCLR " ++ x ++ " BY " ++ y) -- Rn = BCLR Rx BY Ry|<data8>
+ , ([b| 1100 0000 |], \n x y -> n ++ " = BSET " ++ x ++ " BY " ++ y) -- Rn = BSET Rx BY Ry|<data8>
+ , ([b| 1100 1000 |], \n x y -> n ++ " = BTGL " ++ x ++ " BY " ++ y) -- Rn = BTGL Rx BY Ry|<data8>
+ , ([b| 1100 1100 |], \n x y -> "BTST " ++ x ++ " BY " ++ y) -- BTST Rx BY Ry|<data8>
+ , ([b| 0100 0100 |], \n x y -> n ++ " = FDEP " ++ x ++ " BY " ++ y) -- Rn = FDEP Rx BY Ry|<bit6>:<len6>
+ , ([b| 0110 0100 |], \n x y -> n ++ " = " ++ n ++ " OR FDEP " ++ x ++ " BY " ++ y) -- Rn = Rn OR FDEP Rx BY Ry|<bit6>:<len6>
+ , ([b| 0100 1100 |], \n x y -> n ++ " = FDEP " ++ x ++ " BY " ++ y) -- Rn = FDEP Rx BY Ry|<bit6>:<len6> (SE)
+ , ([b| 0110 1100 |], \n x y -> n ++ " = " ++ n ++ " OR FDEP " ++ x ++ " BY " ++ y) -- Rn = Rn OR FDEP Rx BY Ry|<bit6>:<len6>(SE)
+ , ([b| 0100 0000 |], \n x y -> n ++ " = FEXT " ++ x ++ " BY " ++ y) -- Rn = FEXT RX BY Ry|<bit6>:<len6>
+ , ([b| 0100 1000 |], \n x y -> n ++ " = FEXT " ++ x ++ " BY " ++ y ++ " (SE)") -- Rn = FEXT Rx BY Ry|<bit6>:<len6> (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 <http://www.gnu.org/licenses/>.
+-}
+
+{-# 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 <http://www.gnu.org/licenses/>.
+-}
+
+{-# 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 <http://www.gnu.org/licenses/>.
+-}
+
+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 <http://www.gnu.org/licenses/>.
+-}
+
+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
+