Added Int64Rep and Word64Rep. new funs: is64BitRep, showPrimRepToUser, getPrimRepSizeInBytes
-module PrimRep (
- PrimRep(..),
-
- separateByPtrFollowness, isFollowableRep, isFloatingRep,
- getPrimRepSize, retPrimRepSize,
- showPrimRep, ppPrimRep,
- guessPrimRep, decodePrimRep
- ) where
+module PrimRep
+ (
+ PrimRep(..)
+ , separateByPtrFollowness
+ , isFollowableRep
+ , isFloatingRep
+ , is64BitRep
+ , getPrimRepSize
+ , getPrimRepSizeInBytes
+ , retPrimRepSize
+ , showPrimRep
+ , showPrimRepToUser
+ , ppPrimRep
+ , guessPrimRep
+ , decodePrimRep
+ ) where
import Outputable
-- Oh dear.
import Outputable
-- Oh dear.
+-- NOTE: we have to reach out and grab this header file
+-- in our current source/build tree, and not the one supplied
+-- by whoever's compiling us.
#include "../../includes/GhcConstants.h"
\end{code}
#include "../../includes/GhcConstants.h"
\end{code}
| AddrRep -- addresses ("C pointers")
| FloatRep -- floats
| DoubleRep -- doubles
| AddrRep -- addresses ("C pointers")
| FloatRep -- floats
| DoubleRep -- doubles
+ | Word64Rep -- guaranteed to be 64 bits (no more, no less.)
+ | Int64Rep -- guaranteed to be 64 bits (no more, no less.)
| ForeignObjRep -- This has to be a special kind because ccall
-- generates special code when passing/returning
| ForeignObjRep -- This has to be a special kind because ccall
-- generates special code when passing/returning
isFloatingRep DoubleRep = True
isFloatingRep FloatRep = True
isFloatingRep other = False
isFloatingRep DoubleRep = True
isFloatingRep FloatRep = True
isFloatingRep other = False
+
+\end{code}
+
+\begin{code}
+is64BitRep :: PrimRep -> Bool
+
+is64BitRep Int64Rep = True
+is64BitRep Word64Rep = True
+is64BitRep other = False
+
\begin{code}
getPrimRepSize :: PrimRep -> Int
getPrimRepSize DoubleRep = DOUBLE_SIZE -- "words", of course
\begin{code}
getPrimRepSize :: PrimRep -> Int
getPrimRepSize DoubleRep = DOUBLE_SIZE -- "words", of course
+getPrimRepSize Word64Rep = WORD64_SIZE
+getPrimRepSize Int64Rep = INT64_SIZE
--getPrimRepSize FloatRep = 1
--getPrimRepSize CharRep = 1 -- ToDo: count in bytes?
--getPrimRepSize ArrayRep = 1 -- Listed specifically for *documentation*
--getPrimRepSize FloatRep = 1
--getPrimRepSize CharRep = 1 -- ToDo: count in bytes?
--getPrimRepSize ArrayRep = 1 -- Listed specifically for *documentation*
getPrimRepSize other = 1
retPrimRepSize = getPrimRepSize RetRep
getPrimRepSize other = 1
retPrimRepSize = getPrimRepSize RetRep
+
+-- size in bytes, ToDo: cpp in the right vals.
+-- (used in some settings to figure out how many bytes
+-- we have to push onto the stack when calling external
+-- entry points (e.g., stdcalling on win32))
+getPrimRepSizeInBytes :: PrimRep -> Int
+getPrimRepSizeInBytes pr =
+ case pr of
+ CharRep -> 1
+ IntRep -> 4
+ AddrRep -> 4
+ FloatRep -> 4
+ DoubleRep -> 8
+ Word64Rep -> 8
+ Int64Rep -> 8
+ ForeignObjRep -> 4
+ StablePtrRep -> 4
+ ArrayRep -> 4
+ ByteArrayRep -> 4
+ _ -> panic "getPrimRepSize: ouch - this wasn't supposed to happen!"
+
\end{code}
%************************************************************************
\end{code}
%************************************************************************
ppr kind = text (showPrimRep kind)
showPrimRep :: PrimRep -> String
ppr kind = text (showPrimRep kind)
showPrimRep :: PrimRep -> String
+showPrimRepToUser :: PrimRep -> String
-- dumping PrimRep tag for unfoldings
ppPrimRep :: PrimRep -> SDoc
-- dumping PrimRep tag for unfoldings
ppPrimRep :: PrimRep -> SDoc
RetRep -> 'R'
CharRep -> 'C'
IntRep -> 'I'
RetRep -> 'R'
CharRep -> 'C'
IntRep -> 'I'
AddrRep -> 'A'
FloatRep -> 'F'
DoubleRep -> 'D'
AddrRep -> 'A'
FloatRep -> 'F'
DoubleRep -> 'D'
showPrimRep CharRep = "StgChar"
showPrimRep IntRep = "I_" -- short for StgInt
showPrimRep WordRep = "W_" -- short for StgWord
showPrimRep CharRep = "StgChar"
showPrimRep IntRep = "I_" -- short for StgInt
showPrimRep WordRep = "W_" -- short for StgWord
+showPrimRep Int64Rep = "LI_" -- short for StgLongInt
+showPrimRep Word64Rep = "LW_" -- short for StgLongWord
showPrimRep AddrRep = "StgAddr"
showPrimRep FloatRep = "StgFloat"
showPrimRep DoubleRep = "StgDouble"
showPrimRep AddrRep = "StgAddr"
showPrimRep FloatRep = "StgFloat"
showPrimRep DoubleRep = "StgDouble"
showPrimRep ForeignObjRep = "StgPtr" -- see comment below
showPrimRep VoidRep = "!!VOID_KIND!!"
showPrimRep ForeignObjRep = "StgPtr" -- see comment below
showPrimRep VoidRep = "!!VOID_KIND!!"
+showPrimRepToUser pr =
+ case pr of
+ CharRep -> "StgChar"
+ IntRep -> "StgInt"
+ WordRep -> "StgWord"
+ Int64Rep -> "StgInt64"
+ Word64Rep -> "StgWord64"
+ AddrRep -> "StgAddr"
+ FloatRep -> "StgFloat"
+ DoubleRep -> "StgDouble"
+ ArrayRep -> "StgArray"
+ ByteArrayRep -> "StgByteArray"
+ StablePtrRep -> "StgStablePtr"
+ ForeignObjRep -> "StgPtr"
+ _ -> panic ("showPrimRepToUser: " ++ showPrimRep pr)
+
+
decodePrimRep ch =
case ch of
'P' -> PtrRep
decodePrimRep ch =
case ch of
'P' -> PtrRep
'C' -> CharRep
'I' -> IntRep
'W' -> WordRep
'C' -> CharRep
'I' -> IntRep
'W' -> WordRep
+ 'i' -> Int64Rep
+ 'w' -> Word64Rep
'A' -> AddrRep
'F' -> FloatRep
'D' -> DoubleRep
'A' -> AddrRep
'F' -> FloatRep
'D' -> DoubleRep
'V' -> VoidRep
_ -> panic "decodePrimRep"
'V' -> VoidRep
_ -> panic "decodePrimRep"
-guessPrimRep "D_" = DataPtrRep
+guessPrimRep "D_" = DataPtrRep
guessPrimRep "StgRetAddr" = RetRep
guessPrimRep "StgRetAddr" = RetRep
-guessPrimRep "StgChar" = CharRep
-guessPrimRep "I_" = IntRep
-guessPrimRep "W_" = WordRep
-guessPrimRep "StgAddr" = AddrRep
+guessPrimRep "StgChar" = CharRep
+guessPrimRep "I_" = IntRep
+guessPrimRep "LI_" = Int64Rep
+guessPrimRep "W_" = WordRep
+guessPrimRep "LW_" = Word64Rep
+guessPrimRep "StgAddr" = AddrRep
guessPrimRep "StgFloat" = FloatRep
guessPrimRep "StgDouble" = DoubleRep
guessPrimRep "StgArray" = ArrayRep
guessPrimRep "StgFloat" = FloatRep
guessPrimRep "StgDouble" = DoubleRep
guessPrimRep "StgArray" = ArrayRep