-btw Why not let programmer use casm to provide assembly code instead
-of C code? ADR
-
-The (MP) integer operations are a true nightmare. Since we don't have
-a convenient abstract way of allocating temporary variables on the (C)
-stack, we use the space just below HpLim for the @MP_INT@ structures,
-and modify our heap check accordingly.
-
-\begin{code}
--- NB: ordering of clauses somewhere driven by
--- the desire to getting sane patt-matching behavior
-
-primCode [res] IntegerCmpOp args@[sa1,da1, sa2,da2]
- = gmpCompare res (sa1,da1, sa2,da2)
-
-primCode [res] IntegerCmpIntOp args@[sa1,da1,ai]
- = gmpCompareInt res (sa1,da1,ai)
-
-primCode [res] Integer2IntOp arg@[sa,da]
- = gmpInteger2Int res (sa,da)
-
-primCode [res] Integer2WordOp arg@[sa,da]
- = gmpInteger2Word res (sa,da)
-
-primCode [res] Int2AddrOp [arg]
- = simpleCoercion AddrRep res arg
-
-primCode [res] Addr2IntOp [arg]
- = simpleCoercion IntRep res arg
-
-primCode [res] Int2WordOp [arg]
- = simpleCoercion IntRep{-WordRep?-} res arg
-
-primCode [res] Word2IntOp [arg]
- = simpleCoercion IntRep res arg
-
-primCode [res] AddrToHValueOp [arg]
- = simpleCoercion PtrRep res arg
-
-primCode [res] IntToInt8Op [arg]
- = narrowingCoercion IntRep Int8Rep res arg
-primCode [res] IntToInt16Op [arg]
- = narrowingCoercion IntRep Int16Rep res arg
-primCode [res] IntToInt32Op [arg]
- = narrowingCoercion IntRep Int32Rep res arg
-
-primCode [res] WordToWord8Op [arg]
- = narrowingCoercion WordRep Word8Rep res arg
-primCode [res] WordToWord16Op [arg]
- = narrowingCoercion WordRep Word16Rep res arg
-primCode [res] WordToWord32Op [arg]
- = narrowingCoercion WordRep Word32Rep res arg
-\end{code}
-
-\begin{code}
-primCode [res] SameMutableArrayOp args
- = let
- compare = StPrim AddrEqOp (map amodeToStix args)
- assign = StAssign IntRep (amodeToStix res) compare
- in
- returnUs (\xs -> assign : xs)
-
-primCode res@[_] SameMutableByteArrayOp args
- = primCode res SameMutableArrayOp args
-
-primCode res@[_] SameMutVarOp args
- = primCode res SameMutableArrayOp args
-\end{code}
-
-\begin{code}
-primCode res@[_] SameMVarOp args
- = primCode res SameMutableArrayOp args
-
--- #define isEmptyMVarzh(r,a) \
--- r =(I_)((GET_INFO((StgMVar*)(a))) == &stg_EMPTY_MVAR_info )
-primCode [res] IsEmptyMVarOp [arg]
- = let res' = amodeToStix res
- arg' = amodeToStix arg
- arg_info = StInd PtrRep arg'
- em_info = StCLbl mkEMPTY_MVAR_infoLabel
- same = StPrim IntEqOp [arg_info, em_info]
- assign = StAssign IntRep res' same
- in
- returnUs (\xs -> assign : xs)
-
--- #define myThreadIdzh(t) (t = CurrentTSO)
-primCode [res] MyThreadIdOp []
- = let res' = amodeToStix res
- in returnUs (\xs -> StAssign ThreadIdRep res' stgCurrentTSO : xs)
-
-\end{code}
-
-Freezing an array of pointers is a double assignment. We fix the
-header of the ``new'' closure because the lhs is probably a better
-addressing mode for the indirection (most likely, it's a VanillaReg).
-
-\begin{code}
-
-primCode [lhs] UnsafeFreezeArrayOp [rhs]
- = let
- lhs' = amodeToStix lhs
- rhs' = amodeToStix rhs
- header = StInd PtrRep lhs'
- assign = StAssign PtrRep lhs' rhs'
- freeze = StAssign PtrRep header mutArrPtrsFrozen_info
- in
- returnUs (\xs -> assign : freeze : xs)
-
-primCode [lhs] UnsafeFreezeByteArrayOp [rhs]
- = simpleCoercion PtrRep lhs rhs
-\end{code}
-
-Returning the size of (mutable) byte arrays is just
-an indexing operation.
-
-\begin{code}
-primCode [lhs] SizeofByteArrayOp [rhs]
- = let
- lhs' = amodeToStix lhs
- rhs' = amodeToStix rhs
- sz = StIndex IntRep rhs' fixedHS
- assign = StAssign IntRep lhs' (StInd IntRep sz)
- in
- returnUs (\xs -> assign : xs)
-
-primCode [lhs] SizeofMutableByteArrayOp [rhs]
- = let
- lhs' = amodeToStix lhs
- rhs' = amodeToStix rhs
- sz = StIndex IntRep rhs' fixedHS
- assign = StAssign IntRep lhs' (StInd IntRep sz)
- in
- returnUs (\xs -> assign : xs)
-
-\end{code}
-
-Most other array primitives translate to simple indexing.
-
-\begin{code}
-primCode lhs@[_] IndexArrayOp args
- = primCode lhs ReadArrayOp args
-
-primCode [lhs] ReadArrayOp [obj, ix]
- = let
- lhs' = amodeToStix lhs
- obj' = amodeToStix obj
- ix' = amodeToStix ix
- base = StIndex IntRep obj' arrPtrsHS
- assign = StAssign PtrRep lhs' (StInd PtrRep (StIndex PtrRep base ix'))
- in
- returnUs (\xs -> assign : xs)
-
-primCode [] WriteArrayOp [obj, ix, v]
- = let
- obj' = amodeToStix obj
- ix' = amodeToStix ix
- v' = amodeToStix v
- base = StIndex IntRep obj' arrPtrsHS
- assign = StAssign PtrRep (StInd PtrRep (StIndex PtrRep base ix')) v'
- in
- returnUs (\xs -> assign : xs)
-
-primCode [] WriteForeignObjOp [obj, v]
- = let
- obj' = amodeToStix obj
- v' = amodeToStix v
- obj'' = StIndex AddrRep obj' (StInt 4711) -- fixedHS
- assign = StAssign AddrRep (StInd AddrRep obj'') v'
- in
- returnUs (\xs -> assign : xs)
-
--- NB: indexing in "pk" units, *not* in bytes (WDP 95/09)
-primCode ls IndexByteArrayOp_Char rs = primCode_ReadByteArrayOp Word8Rep ls rs
-primCode ls IndexByteArrayOp_WideChar rs = primCode_ReadByteArrayOp CharRep ls rs
-primCode ls IndexByteArrayOp_Int rs = primCode_ReadByteArrayOp IntRep ls rs
-primCode ls IndexByteArrayOp_Word rs = primCode_ReadByteArrayOp WordRep ls rs
-primCode ls IndexByteArrayOp_Addr rs = primCode_ReadByteArrayOp AddrRep ls rs
-primCode ls IndexByteArrayOp_Float rs = primCode_ReadByteArrayOp FloatRep ls rs
-primCode ls IndexByteArrayOp_Double rs = primCode_ReadByteArrayOp DoubleRep ls rs
-primCode ls IndexByteArrayOp_StablePtr rs = primCode_ReadByteArrayOp StablePtrRep ls rs
-primCode ls IndexByteArrayOp_Int8 rs = primCode_ReadByteArrayOp Int8Rep ls rs
-primCode ls IndexByteArrayOp_Int16 rs = primCode_ReadByteArrayOp Int16Rep ls rs
-primCode ls IndexByteArrayOp_Int32 rs = primCode_ReadByteArrayOp Int32Rep ls rs
-primCode ls IndexByteArrayOp_Int64 rs = primCode_ReadByteArrayOp Int64Rep ls rs
-primCode ls IndexByteArrayOp_Word8 rs = primCode_ReadByteArrayOp Word8Rep ls rs
-primCode ls IndexByteArrayOp_Word16 rs = primCode_ReadByteArrayOp Word16Rep ls rs
-primCode ls IndexByteArrayOp_Word32 rs = primCode_ReadByteArrayOp Word32Rep ls rs
-primCode ls IndexByteArrayOp_Word64 rs = primCode_ReadByteArrayOp Word64Rep ls rs
-
-primCode ls ReadByteArrayOp_Char rs = primCode_ReadByteArrayOp Word8Rep ls rs
-primCode ls ReadByteArrayOp_WideChar rs = primCode_ReadByteArrayOp CharRep ls rs
-primCode ls ReadByteArrayOp_Int rs = primCode_ReadByteArrayOp IntRep ls rs
-primCode ls ReadByteArrayOp_Word rs = primCode_ReadByteArrayOp WordRep ls rs
-primCode ls ReadByteArrayOp_Addr rs = primCode_ReadByteArrayOp AddrRep ls rs
-primCode ls ReadByteArrayOp_Float rs = primCode_ReadByteArrayOp FloatRep ls rs
-primCode ls ReadByteArrayOp_Double rs = primCode_ReadByteArrayOp DoubleRep ls rs
-primCode ls ReadByteArrayOp_StablePtr rs = primCode_ReadByteArrayOp StablePtrRep ls rs
-primCode ls ReadByteArrayOp_Int8 rs = primCode_ReadByteArrayOp Int8Rep ls rs
-primCode ls ReadByteArrayOp_Int16 rs = primCode_ReadByteArrayOp Int16Rep ls rs
-primCode ls ReadByteArrayOp_Int32 rs = primCode_ReadByteArrayOp Int32Rep ls rs
-primCode ls ReadByteArrayOp_Int64 rs = primCode_ReadByteArrayOp Int64Rep ls rs
-primCode ls ReadByteArrayOp_Word8 rs = primCode_ReadByteArrayOp Word8Rep ls rs
-primCode ls ReadByteArrayOp_Word16 rs = primCode_ReadByteArrayOp Word16Rep ls rs
-primCode ls ReadByteArrayOp_Word32 rs = primCode_ReadByteArrayOp Word32Rep ls rs
-primCode ls ReadByteArrayOp_Word64 rs = primCode_ReadByteArrayOp Word64Rep ls rs
-
-primCode ls WriteByteArrayOp_Char rs = primCode_WriteByteArrayOp Word8Rep ls rs
-primCode ls WriteByteArrayOp_WideChar rs = primCode_WriteByteArrayOp CharRep ls rs
-primCode ls WriteByteArrayOp_Int rs = primCode_WriteByteArrayOp IntRep ls rs
-primCode ls WriteByteArrayOp_Word rs = primCode_WriteByteArrayOp WordRep ls rs
-primCode ls WriteByteArrayOp_Addr rs = primCode_WriteByteArrayOp AddrRep ls rs
-primCode ls WriteByteArrayOp_Float rs = primCode_WriteByteArrayOp FloatRep ls rs
-primCode ls WriteByteArrayOp_Double rs = primCode_WriteByteArrayOp DoubleRep ls rs
-primCode ls WriteByteArrayOp_StablePtr rs = primCode_WriteByteArrayOp StablePtrRep ls rs
-primCode ls WriteByteArrayOp_Int8 rs = primCode_WriteByteArrayOp Int8Rep ls rs
-primCode ls WriteByteArrayOp_Int16 rs = primCode_WriteByteArrayOp Int16Rep ls rs
-primCode ls WriteByteArrayOp_Int32 rs = primCode_WriteByteArrayOp Int32Rep ls rs
-primCode ls WriteByteArrayOp_Int64 rs = primCode_WriteByteArrayOp Int64Rep ls rs
-primCode ls WriteByteArrayOp_Word8 rs = primCode_WriteByteArrayOp Word8Rep ls rs
-primCode ls WriteByteArrayOp_Word16 rs = primCode_WriteByteArrayOp Word16Rep ls rs
-primCode ls WriteByteArrayOp_Word32 rs = primCode_WriteByteArrayOp Word32Rep ls rs
-primCode ls WriteByteArrayOp_Word64 rs = primCode_WriteByteArrayOp Word64Rep ls rs
-
-primCode ls IndexOffAddrOp_Char rs = primCode_IndexOffAddrOp Word8Rep ls rs
-primCode ls IndexOffAddrOp_WideChar rs = primCode_IndexOffAddrOp CharRep ls rs
-primCode ls IndexOffAddrOp_Int rs = primCode_IndexOffAddrOp IntRep ls rs
-primCode ls IndexOffAddrOp_Word rs = primCode_IndexOffAddrOp WordRep ls rs
-primCode ls IndexOffAddrOp_Addr rs = primCode_IndexOffAddrOp AddrRep ls rs
-primCode ls IndexOffAddrOp_Float rs = primCode_IndexOffAddrOp FloatRep ls rs
-primCode ls IndexOffAddrOp_Double rs = primCode_IndexOffAddrOp DoubleRep ls rs
-primCode ls IndexOffAddrOp_StablePtr rs = primCode_IndexOffAddrOp StablePtrRep ls rs
-primCode ls IndexOffAddrOp_Int8 rs = primCode_IndexOffAddrOp Int8Rep ls rs
-primCode ls IndexOffAddrOp_Int16 rs = primCode_IndexOffAddrOp Int16Rep ls rs
-primCode ls IndexOffAddrOp_Int32 rs = primCode_IndexOffAddrOp Int32Rep ls rs
-primCode ls IndexOffAddrOp_Int64 rs = primCode_IndexOffAddrOp Int64Rep ls rs
-primCode ls IndexOffAddrOp_Word8 rs = primCode_IndexOffAddrOp Word8Rep ls rs
-primCode ls IndexOffAddrOp_Word16 rs = primCode_IndexOffAddrOp Word16Rep ls rs
-primCode ls IndexOffAddrOp_Word32 rs = primCode_IndexOffAddrOp Word32Rep ls rs
-primCode ls IndexOffAddrOp_Word64 rs = primCode_IndexOffAddrOp Word64Rep ls rs
-
-primCode ls IndexOffForeignObjOp_Char rs = primCode_IndexOffForeignObjOp Word8Rep ls rs
-primCode ls IndexOffForeignObjOp_WideChar rs = primCode_IndexOffForeignObjOp CharRep ls rs
-primCode ls IndexOffForeignObjOp_Int rs = primCode_IndexOffForeignObjOp IntRep ls rs
-primCode ls IndexOffForeignObjOp_Word rs = primCode_IndexOffForeignObjOp WordRep ls rs
-primCode ls IndexOffForeignObjOp_Addr rs = primCode_IndexOffForeignObjOp AddrRep ls rs
-primCode ls IndexOffForeignObjOp_Float rs = primCode_IndexOffForeignObjOp FloatRep ls rs
-primCode ls IndexOffForeignObjOp_Double rs = primCode_IndexOffForeignObjOp DoubleRep ls rs
-primCode ls IndexOffForeignObjOp_StablePtr rs = primCode_IndexOffForeignObjOp StablePtrRep ls rs
-primCode ls IndexOffForeignObjOp_Int8 rs = primCode_IndexOffForeignObjOp Int8Rep ls rs
-primCode ls IndexOffForeignObjOp_Int16 rs = primCode_IndexOffForeignObjOp Int16Rep ls rs
-primCode ls IndexOffForeignObjOp_Int32 rs = primCode_IndexOffForeignObjOp Int32Rep ls rs
-primCode ls IndexOffForeignObjOp_Int64 rs = primCode_IndexOffForeignObjOp Int64Rep ls rs
-primCode ls IndexOffForeignObjOp_Word8 rs = primCode_IndexOffForeignObjOp Word8Rep ls rs
-primCode ls IndexOffForeignObjOp_Word16 rs = primCode_IndexOffForeignObjOp Word16Rep ls rs
-primCode ls IndexOffForeignObjOp_Word32 rs = primCode_IndexOffForeignObjOp Word32Rep ls rs
-primCode ls IndexOffForeignObjOp_Word64 rs = primCode_IndexOffForeignObjOp Word64Rep ls rs
-
-primCode ls ReadOffAddrOp_Char rs = primCode_IndexOffAddrOp Word8Rep ls rs
-primCode ls ReadOffAddrOp_WideChar rs = primCode_IndexOffAddrOp CharRep ls rs
-primCode ls ReadOffAddrOp_Int rs = primCode_IndexOffAddrOp IntRep ls rs
-primCode ls ReadOffAddrOp_Word rs = primCode_IndexOffAddrOp WordRep ls rs
-primCode ls ReadOffAddrOp_Addr rs = primCode_IndexOffAddrOp AddrRep ls rs
-primCode ls ReadOffAddrOp_Float rs = primCode_IndexOffAddrOp FloatRep ls rs
-primCode ls ReadOffAddrOp_Double rs = primCode_IndexOffAddrOp DoubleRep ls rs
-primCode ls ReadOffAddrOp_StablePtr rs = primCode_IndexOffAddrOp StablePtrRep ls rs
-primCode ls ReadOffAddrOp_Int8 rs = primCode_IndexOffAddrOp Int8Rep ls rs
-primCode ls ReadOffAddrOp_Int16 rs = primCode_IndexOffAddrOp Int16Rep ls rs
-primCode ls ReadOffAddrOp_Int32 rs = primCode_IndexOffAddrOp Int32Rep ls rs
-primCode ls ReadOffAddrOp_Int64 rs = primCode_IndexOffAddrOp Int64Rep ls rs
-primCode ls ReadOffAddrOp_Word8 rs = primCode_IndexOffAddrOp Word8Rep ls rs
-primCode ls ReadOffAddrOp_Word16 rs = primCode_IndexOffAddrOp Word16Rep ls rs
-primCode ls ReadOffAddrOp_Word32 rs = primCode_IndexOffAddrOp Word32Rep ls rs
-primCode ls ReadOffAddrOp_Word64 rs = primCode_IndexOffAddrOp Word64Rep ls rs
-
-primCode ls WriteOffAddrOp_Char rs = primCode_WriteOffAddrOp Word8Rep ls rs
-primCode ls WriteOffAddrOp_WideChar rs = primCode_WriteOffAddrOp CharRep ls rs
-primCode ls WriteOffAddrOp_Int rs = primCode_WriteOffAddrOp IntRep ls rs
-primCode ls WriteOffAddrOp_Word rs = primCode_WriteOffAddrOp WordRep ls rs
-primCode ls WriteOffAddrOp_Addr rs = primCode_WriteOffAddrOp AddrRep ls rs
-primCode ls WriteOffAddrOp_Float rs = primCode_WriteOffAddrOp FloatRep ls rs
-primCode ls WriteOffAddrOp_Double rs = primCode_WriteOffAddrOp DoubleRep ls rs
-primCode ls WriteOffAddrOp_StablePtr rs = primCode_WriteOffAddrOp StablePtrRep ls rs
-primCode ls WriteOffAddrOp_Int8 rs = primCode_WriteOffAddrOp Int8Rep ls rs
-primCode ls WriteOffAddrOp_Int16 rs = primCode_WriteOffAddrOp Int16Rep ls rs
-primCode ls WriteOffAddrOp_Int32 rs = primCode_WriteOffAddrOp Int32Rep ls rs
-primCode ls WriteOffAddrOp_Int64 rs = primCode_WriteOffAddrOp Int64Rep ls rs
-primCode ls WriteOffAddrOp_Word8 rs = primCode_WriteOffAddrOp Word8Rep ls rs
-primCode ls WriteOffAddrOp_Word16 rs = primCode_WriteOffAddrOp Word16Rep ls rs
-primCode ls WriteOffAddrOp_Word32 rs = primCode_WriteOffAddrOp Word32Rep ls rs
-primCode ls WriteOffAddrOp_Word64 rs = primCode_WriteOffAddrOp Word64Rep ls rs
-
-\end{code}
-