%
-% (c) The AQUA Project, Glasgow University, 1993-1995
+% (c) The AQUA Project, Glasgow University, 1993-1996
%
\begin{code}
#include "HsVersions.h"
-module StixPrim (
- genPrimCode, amodeCode, amodeCode',
+module StixPrim ( primCode, amodeToStix, amodeToStix' ) where
- Target, CAddrMode, StixTree, PrimOp, SplitUniqSupply
- ) where
+IMP_Ubiq(){-uitous-}
+IMPORT_DELOOPER(NcgLoop) -- paranoia checking only
-IMPORT_Trace -- ToDo: rm debugging
+import MachMisc
+#if __GLASGOW_HASKELL__ >= 202
+import MachRegs hiding (Addr)
+#else
+import MachRegs
+#endif
import AbsCSyn
-import AbsPrel ( PrimOp(..), PrimOpResultInfo(..), TyCon,
- getPrimOpResultInfo, isCompareOp, showPrimOp
- IF_ATTACK_PRAGMAS(COMMA tagOf_PrimOp)
- IF_ATTACK_PRAGMAS(COMMA pprPrimOp)
+import AbsCUtils ( getAmodeRep, mixedTypeLocn )
+import Constants ( spARelToInt, spBRelToInt )
+import CostCentre ( noCostCentreAttached )
+import HeapOffs ( hpRelToInt, subOff )
+import Literal ( Literal(..) )
+import PrimOp ( PrimOp(..), isCompareOp, showPrimOp,
+ getPrimOpResultInfo, PrimOpResultInfo(..)
)
-import AbsUniType ( cmpTyCon ) -- pragmas only
-import CgCompInfo ( spARelToInt, spBRelToInt )
-import MachDesc
-import Pretty
-import PrimKind ( isFloatingKind )
-import CostCentre
-import SMRep ( SMRep(..), SMSpecRepKind(..), SMUpdateKind(..) )
+import PrimRep ( PrimRep(..), isFloatingRep )
+import OrdList ( OrdList )
+import PprStyle ( PprStyle(..) )
+import SMRep ( SMRep(..), SMSpecRepKind, SMUpdateKind )
import Stix
-import StixMacro ( smStablePtrTable )
+import StixMacro ( heapCheck )
import StixInteger {- everything -}
-import SplitUniq
-import Unique
-import Unpretty
-import Util
+import UniqSupply ( returnUs, thenUs, SYN_IE(UniqSM) )
+import Pretty ( (<>), ptext, int )
+import Util ( panic )
+#ifdef REALLY_HASKELL_1_3
+ord = fromEnum :: Char -> Int
+#endif
\end{code}
-The main honcho here is genPrimCode, which handles the guts of COpStmts.
+The main honcho here is primCode, which handles the guts of COpStmts.
\begin{code}
arrayOfData_info = sStLitLbl SLIT("ArrayOfData_info") -- out here to avoid CAF (sigh)
imMutArrayOfPtrs_info = sStLitLbl SLIT("ImMutArrayOfPtrs_info")
-genPrimCode
- :: Target
- -> [CAddrMode] -- results
+primCode
+ :: [CAddrMode] -- results
-> PrimOp -- op
-> [CAddrMode] -- args
- -> SUniqSM StixTreeList
-
+ -> UniqSM StixTreeList
\end{code}
First, the dreaded @ccall@. We can't handle @casm@s.
-Usually, this compiles to an assignment, but when the left-hand side is
-empty, we just perform the call and ignore the result.
+Usually, this compiles to an assignment, but when the left-hand side
+is empty, we just perform the call and ignore the result.
-ToDo ADR: modify this to handle Malloc Ptrs.
+ToDo ADR: modify this to handle ForeignObjs.
btw Why not let programmer use casm to provide assembly code instead
of C code? ADR
-\begin{code}
-
-genPrimCode target lhs (CCallOp fn is_asm may_gc arg_tys result_ty) rhs
- | is_asm = error "ERROR: Native code generator can't handle casm"
- | otherwise =
- case lhs of
- [] -> returnSUs (\xs -> (StCall fn VoidKind args) : xs)
- [lhs] ->
- let lhs' = amodeToStix target lhs
- pk = if isFloatingKind (getAmodeKind lhs) then DoubleKind else IntKind
- call = StAssign pk lhs' (StCall fn pk args)
- in
- returnSUs (\xs -> call : xs)
- where
- args = map amodeCodeForCCall rhs
- amodeCodeForCCall x =
- let base = amodeToStix' target x
- in
- case getAmodeKind x of
- ArrayKind -> StIndex PtrKind base (mutHS target)
- ByteArrayKind -> StIndex IntKind base (dataHS target)
- MallocPtrKind -> error "ERROR: native-code generator can't handle Malloc Ptrs (yet): use -fvia-C!"
- _ -> base
-
-\end{code}
-
-The @ErrorIO@ primitive is actually a bit weird...assign a new value to the root
-closure, flush stdout and stderr, and jump to the @ErrorIO_innards@.
-
-\begin{code}
-
-genPrimCode target [] ErrorIOPrimOp [rhs] =
- let changeTop = StAssign PtrKind topClosure (amodeToStix target rhs)
- in
- returnSUs (\xs -> changeTop : flushStdout : flushStderr : errorIO : xs)
-
-\end{code}
-
-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.
+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}
-
-genPrimCode target res IntegerAddOp args =
- gmpTake2Return1 target res SLIT("mpz_add") args
-genPrimCode target res IntegerSubOp args =
- gmpTake2Return1 target res SLIT("mpz_sub") args
-genPrimCode target res IntegerMulOp args =
- gmpTake2Return1 target res SLIT("mpz_mul") args
-
-genPrimCode target res IntegerNegOp arg =
- gmpTake1Return1 target res SLIT("mpz_neg") arg
-
-genPrimCode target res IntegerQuotRemOp arg =
- gmpTake2Return2 target res SLIT("mpz_divmod") arg
-genPrimCode target res IntegerDivModOp arg =
- gmpTake2Return2 target res SLIT("mpz_targetivmod") arg
-
+-- NB: ordering of clauses somewhere driven by
+-- the desire to getting sane patt-matching behavior
+
+primCode res@[ar1,sr1,dr1, ar2,sr2,dr2]
+ IntegerQuotRemOp
+ args@[liveness, aa1,sa1,da1, aa2,sa2,da2]
+ = gmpTake2Return2 (ar1,sr1,dr1, ar2,sr2,dr2) SLIT("mpz_divmod") (liveness, aa1,sa1,da1, aa2,sa2,da2)
+
+primCode res@[ar1,sr1,dr1, ar2,sr2,dr2]
+ IntegerDivModOp
+ args@[liveness, aa1,sa1,da1, aa2,sa2,da2]
+ = gmpTake2Return2 (ar1,sr1,dr1, ar2,sr2,dr2) SLIT("mpz_targetivmod") (liveness, aa1,sa1,da1, aa2,sa2,da2)
+
+primCode res@[ar,sr,dr] IntegerAddOp args@[liveness, aa1,sa1,da1, aa2,sa2,da2]
+ = gmpTake2Return1 (ar,sr,dr) SLIT("mpz_add") (liveness, aa1,sa1,da1, aa2,sa2,da2)
+primCode res@[ar,sr,dr] IntegerSubOp args@[liveness, aa1,sa1,da1, aa2,sa2,da2]
+ = gmpTake2Return1 (ar,sr,dr) SLIT("mpz_sub") (liveness, aa1,sa1,da1, aa2,sa2,da2)
+primCode res@[ar,sr,dr] IntegerMulOp args@[liveness, aa1,sa1,da1, aa2,sa2,da2]
+ = gmpTake2Return1 (ar,sr,dr) SLIT("mpz_mul") (liveness, aa1,sa1,da1, aa2,sa2,da2)
+
+primCode res@[ar,sr,dr] IntegerNegOp arg@[liveness,aa,sa,da]
+ = gmpTake1Return1 (ar,sr,dr) SLIT("mpz_neg") (liveness,aa,sa,da)
\end{code}
-Since we are using the heap for intermediate @MP_INT@ structs, integer comparison
-{\em does} require a heap check in the native code implementation.
+Since we are using the heap for intermediate @MP_INT@ structs, integer
+comparison {\em does} require a heap check in the native code
+implementation.
\begin{code}
+primCode res@[exponr,ar,sr,dr] FloatDecodeOp args@[hp, arg]
+ = decodeFloatingKind FloatRep (exponr,ar,sr,dr) (hp, arg)
-genPrimCode target [res] IntegerCmpOp args = gmpCompare target res args
-
-genPrimCode target [res] Integer2IntOp arg = gmpInteger2Int target res arg
+primCode res@[exponr,ar,sr,dr] DoubleDecodeOp args@[hp, arg]
+ = decodeFloatingKind DoubleRep (exponr,ar,sr,dr) (hp, arg)
-genPrimCode target res Int2IntegerOp args = gmpInt2Integer target res args
+primCode res@[ar,sr,dr] Int2IntegerOp args@[hp, n]
+ = gmpInt2Integer (ar,sr,dr) (hp, n)
-genPrimCode target res Word2IntegerOp args = panic "genPrimCode:Word2IntegerOp"
+primCode res@[ar,sr,dr] Addr2IntegerOp args@[liveness,str]
+ = gmpString2Integer (ar,sr,dr) (liveness,str)
-genPrimCode target res Addr2IntegerOp args = gmpString2Integer target res args
+primCode [res] IntegerCmpOp args@[hp, aa1,sa1,da1, aa2,sa2,da2]
+ = gmpCompare res (hp, aa1,sa1,da1, aa2,sa2,da2)
-genPrimCode target res FloatEncodeOp args =
- encodeFloatingKind FloatKind target res args
+primCode [res] Integer2IntOp arg@[hp, aa,sa,da]
+ = gmpInteger2Int res (hp, aa,sa,da)
-genPrimCode target res DoubleEncodeOp args =
- encodeFloatingKind DoubleKind target res args
+primCode [res] FloatEncodeOp args@[hp, aa,sa,da, expon]
+ = encodeFloatingKind FloatRep res (hp, aa,sa,da, expon)
-genPrimCode target res FloatDecodeOp args =
- decodeFloatingKind FloatKind target res args
+primCode [res] DoubleEncodeOp args@[hp, aa,sa,da, expon]
+ = encodeFloatingKind DoubleRep res (hp, aa,sa,da, expon)
-genPrimCode target res DoubleDecodeOp args =
- decodeFloatingKind DoubleKind target res args
+primCode [res] Int2AddrOp [arg]
+ = simpleCoercion AddrRep res arg
-genPrimCode target res Int2AddrOp arg =
- simpleCoercion target AddrKind res arg
+primCode [res] Addr2IntOp [arg]
+ = simpleCoercion IntRep res arg
-genPrimCode target res Addr2IntOp arg =
- simpleCoercion target IntKind res arg
+primCode [res] Int2WordOp [arg]
+ = simpleCoercion IntRep{-WordRep?-} res arg
-genPrimCode target res Int2WordOp arg =
- simpleCoercion target IntKind{-WordKind?-} res arg
+primCode [res] Word2IntOp [arg]
+ = simpleCoercion IntRep res arg
+\end{code}
-genPrimCode target res Word2IntOp arg =
- simpleCoercion target IntKind res arg
+The @ErrorIO@ primitive is actually a bit weird...assign a new value
+to the root closure, flush stdout and stderr, and jump to the
+@ErrorIO_innards@.
+\begin{code}
+primCode [] ErrorIOPrimOp [rhs]
+ = let
+ changeTop = StAssign PtrRep topClosure (amodeToStix rhs)
+ in
+ returnUs (\xs -> changeTop : flushStdout : flushStderr : errorIO : xs)
\end{code}
@newArray#@ ops allocate heap space.
\begin{code}
-
-genPrimCode target [res] NewArrayOp args =
- let [liveness, n, initial] = map (amodeToStix target) args
- result = amodeToStix target res
- space = StPrim IntAddOp [n, mutHS target]
- loc = StIndex PtrKind stgHp
+primCode [res] NewArrayOp args
+ = let
+ [liveness, n, initial] = map amodeToStix args
+ result = amodeToStix res
+ space = StPrim IntAddOp [n, mutHS]
+ loc = StIndex PtrRep stgHp
(StPrim IntNegOp [StPrim IntSubOp [space, StInt 1]])
- assign = StAssign PtrKind result loc
- initialise = StCall SLIT("newArrZh_init") VoidKind [result, n, initial]
+ assign = StAssign PtrRep result loc
+ initialise = StCall SLIT("newArrZh_init") VoidRep [result, n, initial]
in
- heapCheck target liveness space (StInt 0)
- `thenSUs` \ heap_chk ->
-
- returnSUs (heap_chk . (\xs -> assign : initialise : xs))
-
-genPrimCode target [res] (NewByteArrayOp pk) args =
- let [liveness, count] = map (amodeToStix target) args
- result = amodeToStix target res
- n = StPrim IntMulOp [count, StInt (toInteger (sizeof target pk))]
- slop = StPrim IntAddOp [n, StInt (toInteger (sizeof target IntKind - 1))]
- words = StPrim IntDivOp [slop, StInt (toInteger (sizeof target IntKind))]
- space = StPrim IntAddOp [n, StPrim IntAddOp [words, dataHS target]]
- loc = StIndex PtrKind stgHp
+ heapCheck liveness space (StInt 0) `thenUs` \ heap_chk ->
+
+ returnUs (heap_chk . (\xs -> assign : initialise : xs))
+
+primCode [res] (NewByteArrayOp pk) args
+ = let
+ [liveness, count] = map amodeToStix args
+ result = amodeToStix res
+ n = StPrim IntMulOp [count, StInt (sizeOf pk)]
+ slop = StPrim IntAddOp [n, StInt (sizeOf IntRep - 1)]
+ words = StPrim IntQuotOp [slop, StInt (sizeOf IntRep)]
+ space = StPrim IntAddOp [n, StPrim IntAddOp [words, dataHS]]
+ loc = StIndex PtrRep stgHp
(StPrim IntNegOp [StPrim IntSubOp [space, StInt 1]])
- assign = StAssign PtrKind result loc
- init1 = StAssign PtrKind (StInd PtrKind loc) arrayOfData_info
- init2 = StAssign IntKind
- (StInd IntKind
- (StIndex IntKind loc
- (StInt (toInteger (fixedHeaderSize target)))))
- (StPrim IntAddOp [words,
- StInt (toInteger (varHeaderSize target
- (DataRep 0)))])
+ assign = StAssign PtrRep result loc
+ init1 = StAssign PtrRep (StInd PtrRep loc) arrayOfData_info
+ init2 = StAssign IntRep
+ (StInd IntRep
+ (StIndex IntRep loc
+ (StInt (toInteger fixedHdrSizeInWords))))
+ (StPrim IntAddOp [words,
+ StInt (toInteger (varHdrSizeInWords (DataRep 0)))])
in
- heapCheck target liveness space (StInt 0)
- `thenSUs` \ heap_chk ->
+ heapCheck liveness space (StInt 0) `thenUs` \ heap_chk ->
- returnSUs (heap_chk . (\xs -> assign : init1 : init2 : xs))
+ returnUs (heap_chk . (\xs -> assign : init1 : init2 : xs))
-genPrimCode target [res] SameMutableArrayOp args =
- let compare = StPrim AddrEqOp (map (amodeToStix target) args)
- assign = StAssign IntKind (amodeToStix target res) compare
+primCode [res] SameMutableArrayOp args
+ = let
+ compare = StPrim AddrEqOp (map amodeToStix args)
+ assign = StAssign IntRep (amodeToStix res) compare
in
- returnSUs (\xs -> assign : xs)
-
-genPrimCode target res SameMutableByteArrayOp args =
- genPrimCode target res SameMutableArrayOp args
+ returnUs (\xs -> assign : xs)
+primCode res@[_] SameMutableByteArrayOp args
+ = primCode res SameMutableArrayOp args
\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).
+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}
-genPrimCode target [lhs] UnsafeFreezeArrayOp [rhs] =
- let lhs' = amodeToStix target lhs
- rhs' = amodeToStix target rhs
- header = StInd PtrKind lhs'
- assign = StAssign PtrKind lhs' rhs'
- freeze = StAssign PtrKind header imMutArrayOfPtrs_info
+primCode [lhs] UnsafeFreezeArrayOp [rhs]
+ = let
+ lhs' = amodeToStix lhs
+ rhs' = amodeToStix rhs
+ header = StInd PtrRep lhs'
+ assign = StAssign PtrRep lhs' rhs'
+ freeze = StAssign PtrRep header imMutArrayOfPtrs_info
in
- returnSUs (\xs -> assign : freeze : xs)
-
-genPrimCode target lhs UnsafeFreezeByteArrayOp rhs =
- simpleCoercion target PtrKind lhs rhs
+ returnUs (\xs -> assign : freeze : xs)
+primCode [lhs] UnsafeFreezeByteArrayOp [rhs]
+ = simpleCoercion PtrRep lhs rhs
\end{code}
Most other array primitives translate to simple indexing.
\begin{code}
-genPrimCode target lhs IndexArrayOp args =
- genPrimCode target lhs ReadArrayOp args
+primCode lhs@[_] IndexArrayOp args
+ = primCode lhs ReadArrayOp args
-genPrimCode target [lhs] ReadArrayOp [obj, ix] =
- let lhs' = amodeToStix target lhs
- obj' = amodeToStix target obj
- ix' = amodeToStix target ix
- base = StIndex IntKind obj' (mutHS target)
- assign = StAssign PtrKind lhs' (StInd PtrKind (StIndex PtrKind base ix'))
+primCode [lhs] ReadArrayOp [obj, ix]
+ = let
+ lhs' = amodeToStix lhs
+ obj' = amodeToStix obj
+ ix' = amodeToStix ix
+ base = StIndex IntRep obj' mutHS
+ assign = StAssign PtrRep lhs' (StInd PtrRep (StIndex PtrRep base ix'))
in
- returnSUs (\xs -> assign : xs)
-
-genPrimCode target [lhs] WriteArrayOp [obj, ix, v] =
- let obj' = amodeToStix target obj
- ix' = amodeToStix target ix
- v' = amodeToStix target v
- base = StIndex IntKind obj' (mutHS target)
- assign = StAssign PtrKind (StInd PtrKind (StIndex PtrKind base ix')) v'
+ returnUs (\xs -> assign : xs)
+
+primCode [] WriteArrayOp [obj, ix, v]
+ = let
+ obj' = amodeToStix obj
+ ix' = amodeToStix ix
+ v' = amodeToStix v
+ base = StIndex IntRep obj' mutHS
+ assign = StAssign PtrRep (StInd PtrRep (StIndex PtrRep base ix')) v'
in
- returnSUs (\xs -> assign : xs)
+ returnUs (\xs -> assign : xs)
+
+primCode lhs@[_] (IndexByteArrayOp pk) args
+ = primCode lhs (ReadByteArrayOp pk) args
-genPrimCode target lhs (IndexByteArrayOp pk) args =
- genPrimCode target lhs (ReadByteArrayOp pk) args
+-- NB: indexing in "pk" units, *not* in bytes (WDP 95/09)
-genPrimCode target [lhs] (ReadByteArrayOp pk) [obj, ix] =
- let lhs' = amodeToStix target lhs
- obj' = amodeToStix target obj
- ix' = amodeToStix target ix
- base = StIndex IntKind obj' (dataHS target)
- assign = StAssign pk lhs' (StInd pk (StIndex CharKind base ix'))
+primCode [lhs] (ReadByteArrayOp pk) [obj, ix]
+ = let
+ lhs' = amodeToStix lhs
+ obj' = amodeToStix obj
+ ix' = amodeToStix ix
+ base = StIndex IntRep obj' dataHS
+ assign = StAssign pk lhs' (StInd pk (StIndex pk base ix'))
in
- returnSUs (\xs -> assign : xs)
-
-genPrimCode target [] (WriteByteArrayOp pk) [obj, ix, v] =
- let obj' = amodeToStix target obj
- ix' = amodeToStix target ix
- v' = amodeToStix target v
- base = StIndex IntKind obj' (dataHS target)
- assign = StAssign pk (StInd pk (StIndex CharKind base ix')) v'
+ returnUs (\xs -> assign : xs)
+
+primCode [lhs] (IndexOffAddrOp pk) [obj, ix]
+ = let
+ lhs' = amodeToStix lhs
+ obj' = amodeToStix obj
+ ix' = amodeToStix ix
+ assign = StAssign pk lhs' (StInd pk (StIndex pk obj' ix'))
in
- returnSUs (\xs -> assign : xs)
-
-genPrimCode target [lhs] (IndexOffAddrOp pk) [obj, ix] =
- let lhs' = amodeToStix target lhs
- obj' = amodeToStix target obj
- ix' = amodeToStix target ix
- assign = StAssign pk lhs' (StInd pk (StIndex CharKind obj' ix'))
+ returnUs (\xs -> assign : xs)
+
+primCode [] (WriteByteArrayOp pk) [obj, ix, v]
+ = let
+ obj' = amodeToStix obj
+ ix' = amodeToStix ix
+ v' = amodeToStix v
+ base = StIndex IntRep obj' dataHS
+ assign = StAssign pk (StInd pk (StIndex pk base ix')) v'
in
- returnSUs (\xs -> assign : xs)
-
+ returnUs (\xs -> assign : xs)
\end{code}
Stable pointer operations.
First the easy one.
-
\begin{code}
-genPrimCode target [lhs] DeRefStablePtrOp [sp] =
- let lhs' = amodeToStix target lhs
- pk = getAmodeKind lhs
- sp' = amodeToStix target sp
+primCode [lhs] DeRefStablePtrOp [sp]
+ = let
+ lhs' = amodeToStix lhs
+ pk = getAmodeRep lhs
+ sp' = amodeToStix sp
call = StCall SLIT("deRefStablePointer") pk [sp', smStablePtrTable]
assign = StAssign pk lhs' call
in
- returnSUs (\xs -> assign : xs)
-
+ returnUs (\xs -> assign : xs)
\end{code}
Now the hard one. For comparison, here's the code from StgMacros:
EXTDATA(MK_INFO_LBL(StablePointerTable)); \
EXTDATA(UnusedSP); \
StgStablePtr newSP; \
- \
+ \
if (SPT_EMPTY(StorageMgrInfo.StablePointerTable)) { /* free stack is empty */ \
I_ OldNoPtrs = SPT_NoPTRS(StorageMgrInfo.StablePointerTable); \
- \
+ \
/* any strictly increasing expression will do here */ \
I_ NewNoPtrs = OldNoPtrs * 2 + 100; \
- \
+ \
I_ NewSize = DYN_VHS + NewNoPtrs + 1 + NewNoPtrs; \
P_ SPTable; \
- \
+ \
HEAP_CHK(NO_LIVENESS, _FHS+NewSize, 0); \
CC_ALLOC(CCC, _FHS+NewSize, SPT_K); /* cc prof */ \
- \
+ \
SPTable = Hp + 1 - (_FHS + NewSize); \
SET_DYN_HDR(SPTable,StablePointerTable,CCC,NewSize,NewNoPtrs); \
SAFESTGCALL2(void, (void *, P_, P_), enlargeSPTable, SPTable, StorageMgrInfo.StablePointerTable); \
StorageMgrInfo.StablePointerTable = SPTable; \
} \
- \
+ \
newSP = SPT_POP(StorageMgrInfo.StablePointerTable); \
SPT_SPTR(StorageMgrInfo.StablePointerTable, newSP) = unstablePtr; \
stablePtr = newSP; \
--JSM
\begin{pseudocode}
-genPrimCode sty md [lhs] MakeStablePtrOp args =
- let
+primCode [lhs] MakeStablePtrOp args
+ = let
-- some useful abbreviations (I'm sure these must exist already)
- add = trPrim . IntAddOp
+ add = trPrim . IntAddOp
sub = trPrim . IntSubOp
one = trInt [1]
- dec x = trAssign IntKind [x, sub [x, one]]
- inc x = trAssign IntKind [x, add [x, one]]
+ dec x = trAssign IntRep [x, sub [x, one]]
+ inc x = trAssign IntRep [x, add [x, one]]
-- tedious hardwiring in of closure layout offsets (from SMClosures)
- dynHS = 2 + fixedHeaderSize md sty + varHeaderSize md sty DynamicRep
- spt_SIZE c = trIndex PtrKind [c, trInt [fhs + gc_reserved] ]
- spt_NoPTRS c = trIndex PtrKind [c, trInt [fhs + gc_reserved + 1] ]
- spt_SPTR c i = trIndex PtrKind [c, add [trInt [dynHS], i]]
- spt_TOP c = trIndex PtrKind [c, add [trInt [dynHS], spt_NoPTRS c]]
- spt_FREE c i = trIndex PtrKind [c, add [trInt [dynHS], spt_NoPTRS c]]
+ dynHS = 2 + fixedHdrSizeInWords + varHdrSizeInWords DynamicRep
+ spt_SIZE c = trIndex PtrRep [c, trInt [fhs + gc_reserved] ]
+ spt_NoPTRS c = trIndex PtrRep [c, trInt [fhs + gc_reserved + 1] ]
+ spt_SPTR c i = trIndex PtrRep [c, add [trInt [dynHS], i]]
+ spt_TOP c = trIndex PtrRep [c, add [trInt [dynHS], spt_NoPTRS c]]
+ spt_FREE c i = trIndex PtrRep [c, add [trInt [dynHS], spt_NoPTRS c]]
-- tedious hardwiring in of stack manipulation macros (from SMClosures)
spt_FULL c lbl =
trCondJump lbl [trPrim IntEqOp [spt_TOP c, spt_NoPTRS c]]
spt_EMPTY c lbl =
trCondJump lbl [trPrim IntEqOp [spt_TOP c, trInt [0]]]
- spt_PUSH c f = [
- trAssign PtrKind [spt_FREE c (spt_TOP c), f],
+ spt_PUSH c f = [
+ trAssign PtrRep [spt_FREE c (spt_TOP c), f],
inc (spt_TOP c),
- spt_POP c x = [
- dec (spt_TOP c),
- trAssign PtrKind [x, spt_FREE c (spt_TOP c)]
+ spt_POP c x = [
+ dec (spt_TOP c),
+ trAssign PtrRep [x, spt_FREE c (spt_TOP c)]
]
-- now to get down to business
- lhs' = amodeCode sty md lhs
- [liveness, unstable] = map (amodeCode sty md) args
+ lhs' = amodeCode lhs
+ [liveness, unstable] = map amodeCode args
spt = smStablePtrTable
newSP = -- another temporary
allocNewTable = -- some sort fo heap allocation needed
- copyOldTable = trCall "enlargeSPTable" PtrKind [newSPT, spt]
+ copyOldTable = trCall "enlargeSPTable" PtrRep [newSPT, spt]
- enlarge =
+ enlarge =
allocNewTable ++ [
copyOldTable,
- trAssign PtrKind [spt, newSPT]
+ trAssign PtrRep [spt, newSPT]
allocate = [
spt_POP spt newSP,
- trAssign PtrKind [spt_SPTR spt newSP, unstable],
- trAssign StablePtrKind [lhs', newSP]
+ trAssign PtrRep [spt_SPTR spt newSP, unstable],
+ trAssign StablePtrRep [lhs', newSP]
]
-
+
in
getUniqLabelCTS `thenCTS` \ oklbl ->
- returnCodes sty md
+ returnCodes sty md
(spt_EMPTY spt oklbl : (enlarge ++ (trLabel [oklbl] : allocate)))
\end{pseudocode}
+\begin{code}
+primCode res Word2IntegerOp args = panic "primCode:Word2IntegerOp"
+
+primCode lhs (CCallOp fn is_asm may_gc arg_tys result_ty) rhs
+ | is_asm = error "ERROR: Native code generator can't handle casm"
+ | otherwise
+ = case lhs of
+ [] -> returnUs (\xs -> (StCall fn VoidRep args) : xs)
+ [lhs] ->
+ let lhs' = amodeToStix lhs
+ pk = if isFloatingRep (getAmodeRep lhs) then DoubleRep else IntRep
+ call = StAssign pk lhs' (StCall fn pk args)
+ in
+ returnUs (\xs -> call : xs)
+ where
+ args = map amodeCodeForCCall rhs
+ amodeCodeForCCall x =
+ let base = amodeToStix' x
+ in
+ case getAmodeRep x of
+ ArrayRep -> StIndex PtrRep base mutHS
+ ByteArrayRep -> StIndex IntRep base dataHS
+ ForeignObjRep -> error "ERROR: native-code generator can't handle ForeignObjs (yet): use -fvia-C!"
+ _ -> base
+\end{code}
Now the more mundane operations.
\begin{code}
-
-genPrimCode target lhs op rhs =
- let lhs' = map (amodeToStix target) lhs
- rhs' = map (amodeToStix' target) rhs
+primCode lhs op rhs
+ = let
+ lhs' = map amodeToStix lhs
+ rhs' = map amodeToStix' rhs
in
- returnSUs (\ xs -> simplePrim target lhs' op rhs' : xs)
-
-simpleCoercion
- :: Target
- -> PrimKind
- -> [CAddrMode]
- -> [CAddrMode]
- -> SUniqSM StixTreeList
-
-simpleCoercion target pk [lhs] [rhs] =
- returnSUs (\xs -> StAssign pk (amodeToStix target lhs) (amodeToStix target rhs) : xs)
+ returnUs (\ xs -> simplePrim lhs' op rhs' : xs)
+\end{code}
+\begin{code}
+simpleCoercion
+ :: PrimRep
+ -> CAddrMode
+ -> CAddrMode
+ -> UniqSM StixTreeList
+
+simpleCoercion pk lhs rhs
+ = returnUs (\xs -> StAssign pk (amodeToStix lhs) (amodeToStix rhs) : xs)
\end{code}
-Here we try to rewrite primitives into a form the code generator
-can understand. Any primitives not handled here must be handled
-at the level of the specific code generator.
+Here we try to rewrite primitives into a form the code generator can
+understand. Any primitives not handled here must be handled at the
+level of the specific code generator.
\begin{code}
-
-simplePrim
- :: Target
- -> [StixTree]
- -> PrimOp
- -> [StixTree]
+simplePrim
+ :: [StixTree]
+ -> PrimOp
+ -> [StixTree]
-> StixTree
-
\end{code}
Now look for something more conventional.
\begin{code}
+simplePrim [lhs] op rest
+ = StAssign pk lhs (StPrim op rest)
+ where
+ pk = if isCompareOp op then
+ IntRep
+ else
+ case getPrimOpResultInfo op of
+ ReturnsPrim pk -> pk
+ _ -> simplePrim_error op
-simplePrim target [lhs] op rest = StAssign pk lhs (StPrim op rest)
- where pk = if isCompareOp op then IntKind
- else case getPrimOpResultInfo op of
- ReturnsPrim pk -> pk
- _ -> simplePrim_error op
-
-simplePrim target _ op _ = simplePrim_error op
+simplePrim as op bs = simplePrim_error op
simplePrim_error op
- = error ("ERROR: primitive operation `"++showPrimOp PprDebug op++"'cannot be handled\nby the native-code generator. Workaround: use -fvia-C.\n(Perhaps you should report it as a GHC bug, also.)\n")
+ = error ("ERROR: primitive operation `"++showPrimOp PprDebug op++"'cannot be handled\nby the native-code generator. Workaround: use -fvia-C.\n(Perhaps you should report it as a GHC bug, also.)\n")
\end{code}
%---------------------------------------------------------------------
Here we generate the Stix code for CAddrModes.
-When a character is fetched from a mixed type location, we have to
-do an extra cast. This is reflected in amodeCode', which is for rhs
+When a character is fetched from a mixed type location, we have to do
+an extra cast. This is reflected in amodeCode', which is for rhs
amodes that might possibly need the extra cast.
\begin{code}
+amodeToStix, amodeToStix' :: CAddrMode -> StixTree
-amodeCode, amodeCode'
- :: Target
- -> CAddrMode
- -> StixTree
-
-amodeCode' target am@(CVal rr CharKind)
- | mixedTypeLocn am = StPrim ChrOp [amodeToStix target am]
- | otherwise = amodeToStix target am
-
-amodeCode' target am = amodeToStix target am
-
-amodeCode target am@(CVal rr CharKind) | mixedTypeLocn am =
- StInd IntKind (amodeCode target (CAddr rr))
-
-amodeCode target (CVal rr pk) = StInd pk (amodeCode target (CAddr rr))
-
-amodeCode target (CAddr r@(SpARel spA off)) =
- StIndex PtrKind stgSpA (StInt (toInteger (spARelToInt r)))
-
-amodeCode target (CAddr r@(SpBRel spB off)) =
- StIndex IntKind stgSpB (StInt (toInteger (spBRelToInt r)))
+amodeToStix'{-'-} am@(CVal rr CharRep)
+ | mixedTypeLocn am = StPrim ChrOp [amodeToStix am]
+ | otherwise = amodeToStix am
-amodeCode target (CAddr (HpRel hp off)) =
- StIndex IntKind stgHp (StInt (toInteger (-(hpRel target (hp `subOff` off)))))
+amodeToStix' am = amodeToStix am
-amodeCode target (CAddr (NodeRel off)) =
- StIndex IntKind stgNode (StInt (toInteger (hpRel target off)))
+-----------
+amodeToStix am@(CVal rr CharRep)
+ | mixedTypeLocn am
+ = StInd IntRep (amodeToStix (CAddr rr))
-amodeCode target (CReg magic) = StReg (StixMagicId magic)
-amodeCode target (CTemp uniq pk) = StReg (StixTemp uniq pk)
+amodeToStix (CVal rr pk) = StInd pk (amodeToStix (CAddr rr))
-amodeCode target (CLbl lbl _) = StCLbl lbl
+amodeToStix (CAddr (SpARel spA off))
+ = StIndex PtrRep stgSpA (StInt (toInteger (spARelToInt spA off)))
-amodeCode target (CUnVecLbl dir _) = StCLbl dir
+amodeToStix (CAddr (SpBRel spB off))
+ = StIndex IntRep stgSpB (StInt (toInteger (spBRelToInt spB off)))
-amodeCode target (CTableEntry base off pk) =
- StInd pk (StIndex pk (amodeCode target base) (amodeCode target off))
+amodeToStix (CAddr (HpRel hp off))
+ = StIndex IntRep stgHp (StInt (toInteger (-(hpRelToInt (hp `subOff` off)))))
--- For CharLike and IntLike, we attempt some trivial constant-folding here.
+amodeToStix (CAddr (NodeRel off))
+ = StIndex IntRep stgNode (StInt (toInteger (hpRelToInt off)))
-amodeCode target (CCharLike (CLit (MachChar c))) =
- StLitLbl (uppBeside (uppPStr SLIT("CHARLIKE_closures+")) (uppInt off))
- where off = charLikeClosureSize target * ord c
+amodeToStix (CReg magic) = StReg (StixMagicId magic)
+amodeToStix (CTemp uniq pk) = StReg (StixTemp uniq pk)
-amodeCode target (CCharLike x) =
- StPrim IntAddOp [charLike, off]
- where off = StPrim IntMulOp [amodeCode target x,
- StInt (toInteger (charLikeClosureSize target))]
+amodeToStix (CLbl lbl _) = StCLbl lbl
+amodeToStix (CUnVecLbl dir _) = StCLbl dir
-amodeCode target (CIntLike (CLit (MachInt i _))) =
- StPrim IntAddOp [intLikePtr, StInt off]
- where off = toInteger (intLikeClosureSize target) * i
+amodeToStix (CTableEntry base off pk)
+ = StInd pk (StIndex pk (amodeToStix base) (amodeToStix off))
-amodeCode target (CIntLike x) =
- StPrim IntAddOp [intLikePtr, off]
- where off = StPrim IntMulOp [amodeCode target x,
- StInt (toInteger (intLikeClosureSize target))]
+ -- For CharLike and IntLike, we attempt some trivial constant-folding here.
--- A CString is just a (CLit . MachStr)
-amodeCode target (CString s) = StString s
-
-amodeCode target (CLit core) = case core of
- (MachChar c) -> StInt (toInteger (ord c))
- (MachStr s) -> StString s
- (MachAddr a) -> StInt a
- (MachInt i _) -> StInt i
- (MachLitLit s _) -> StLitLit s
- (MachFloat d) -> StDouble d
- (MachDouble d) -> StDouble d
- _ -> panic "amodeCode:core literal"
-
--- A CLitLit is just a (CLit . MachLitLit)
-amodeCode target (CLitLit s _) = StLitLit s
+amodeToStix (CCharLike (CLit (MachChar c)))
+ = StLitLbl ((<>) (ptext SLIT("CHARLIKE_closures+")) (int off))
+ where
+ off = charLikeSize * ord c
--- COffsets are in words, not bytes!
-amodeCode target (COffset off) = StInt (toInteger (hpRel target off))
+amodeToStix (CCharLike x)
+ = StPrim IntAddOp [charLike, off]
+ where
+ off = StPrim IntMulOp [amodeToStix x, StInt (toInteger charLikeSize)]
-amodeCode target (CMacroExpr _ macro [arg]) =
- case macro of
- INFO_PTR -> StInd PtrKind (amodeToStix target arg)
- ENTRY_CODE -> amodeToStix target arg
- INFO_TAG -> tag
- EVAL_TAG -> StPrim IntGeOp [tag, StInt 0]
+amodeToStix (CIntLike (CLit (MachInt i _)))
+ = StPrim IntAddOp [intLikePtr, StInt off]
where
- tag = StInd IntKind (StIndex IntKind (amodeToStix target arg) (StInt (-2)))
- -- That ``-2'' really bothers me. (JSM)
+ off = toInteger intLikeSize * i
-amodeCode target (CCostCentre cc print_as_string)
+amodeToStix (CIntLike x)
+ = StPrim IntAddOp [intLikePtr, off]
+ where
+ off = StPrim IntMulOp [amodeToStix x, StInt (toInteger intLikeSize)]
+
+ -- A CString is just a (CLit . MachStr)
+amodeToStix (CString s) = StString s
+
+amodeToStix (CLit core)
+ = case core of
+ MachChar c -> StInt (toInteger (ord c))
+ MachStr s -> StString s
+ MachAddr a -> StInt a
+ MachInt i _ -> StInt i
+ MachLitLit s _ -> StLitLit s
+ MachFloat d -> StDouble d
+ MachDouble d -> StDouble d
+ _ -> panic "amodeToStix:core literal"
+
+ -- A CLitLit is just a (CLit . MachLitLit)
+amodeToStix (CLitLit s _) = StLitLit s
+
+ -- COffsets are in words, not bytes!
+amodeToStix (COffset off) = StInt (toInteger (hpRelToInt off))
+
+amodeToStix (CMacroExpr _ macro [arg])
+ = case macro of
+ INFO_PTR -> StInd PtrRep (amodeToStix arg)
+ ENTRY_CODE -> amodeToStix arg
+ INFO_TAG -> tag
+ EVAL_TAG -> StPrim IntGeOp [tag, StInt 0]
+ where
+ tag = StInd IntRep (StIndex IntRep (amodeToStix arg) (StInt (-2)))
+ -- That ``-2'' really bothers me. (JSM) (Replace w/ oTHER_TAG? [WDP])
+
+amodeToStix (CCostCentre cc print_as_string)
= if noCostCentreAttached cc
then StComment SLIT("") -- sigh
- else panic "amodeCode:CCostCentre"
+ else panic "amodeToStix:CCostCentre"
\end{code}
-Sizes of the CharLike and IntLike closures that are arranged as arrays in the
-data segment. (These are in bytes.)
+Sizes of the CharLike and IntLike closures that are arranged as arrays
+in the data segment. (These are in bytes.)
\begin{code}
-
-- The INTLIKE base pointer
intLikePtr :: StixTree
-intLikePtr = StInd PtrKind (sStLitLbl SLIT("INTLIKE_closures"))
+intLikePtr = StInd PtrRep (sStLitLbl SLIT("INTLIKE_closures"))
-- The CHARLIKE base
topClosure, flushStdout, flushStderr, errorIO :: StixTree
-topClosure = StInd PtrKind (sStLitLbl SLIT("TopClosure"))
-flushStdout = StCall SLIT("fflush") VoidKind [StLitLit SLIT("stdout")]
-flushStderr = StCall SLIT("fflush") VoidKind [StLitLit SLIT("stderr")]
-errorIO = StJump (StInd PtrKind (sStLitLbl SLIT("ErrorIO_innards")))
-
+topClosure = StInd PtrRep (sStLitLbl SLIT("TopClosure"))
+flushStdout = StCall SLIT("fflush") VoidRep [StLitLit SLIT("stdout")]
+flushStderr = StCall SLIT("fflush") VoidRep [StLitLit SLIT("stderr")]
+errorIO = StJump (StInd PtrRep (sStLitLbl SLIT("ErrorIO_innards")))
\end{code}
projects / ghc-hetmet.git / blobdiff