X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FnativeGen%2FStixPrim.lhs;h=7583e1cd271cbda5e9bd3f8913275d688358701e;hb=a7d8f43718b167689c0a4a4c23b33a325e0239f1;hp=977d9ef84048327c9d9e016297f453dc2476a161;hpb=e7d21ee4f8ac907665a7e170c71d59e13a01da09;p=ghc-hetmet.git diff --git a/ghc/compiler/nativeGen/StixPrim.lhs b/ghc/compiler/nativeGen/StixPrim.lhs index 977d9ef..7583e1c 100644 --- a/ghc/compiler/nativeGen/StixPrim.lhs +++ b/ghc/compiler/nativeGen/StixPrim.lhs @@ -1,599 +1,323 @@ % -% (c) The AQUA Project, Glasgow University, 1993-1995 +% (c) The AQUA Project, Glasgow University, 1993-1998 % \begin{code} +module StixPrim ( amodeToStix, amodeToStix', foreignCallCode ) +where + #include "HsVersions.h" -module StixPrim ( - genPrimCode, amodeCode, amodeCode', - - Target, CAddrMode, StixTree, PrimOp, SplitUniqSupply - ) where - -IMPORT_Trace -- ToDo: rm debugging - -import AbsCSyn -import AbsPrel ( PrimOp(..), PrimOpResultInfo(..), TyCon, - getPrimOpResultInfo, isCompareOp, showPrimOp - IF_ATTACK_PRAGMAS(COMMA tagOf_PrimOp) - IF_ATTACK_PRAGMAS(COMMA pprPrimOp) - ) -import AbsUniType ( cmpTyCon ) -- pragmas only -import CgCompInfo ( spARelToInt, spBRelToInt ) -import MachDesc -import Pretty -import PrimKind ( isFloatingKind ) -import CostCentre -import SMRep ( SMRep(..), SMSpecRepKind(..), SMUpdateKind(..) ) +-- import MachMisc import Stix -import StixMacro ( smStablePtrTable ) -import StixInteger {- everything -} -import SplitUniq -import Unique -import Unpretty -import Util +import PprAbsC ( pprAmode ) +import AbsCSyn hiding ( spRel ) +import AbsCUtils ( getAmodeRep, mixedTypeLocn ) +import SMRep ( fixedHdrSize ) +import Literal ( Literal(..), word2IntLit ) +import MachOp ( MachOp(..) ) +import PrimRep ( PrimRep(..), getPrimRepSizeInBytes ) +import UniqSupply ( returnUs, thenUs, getUniqueUs, UniqSM ) +import Constants ( wORD_SIZE, + mIN_INTLIKE, mIN_CHARLIKE, uF_UPDATEE, bLOCK_SIZE, + rESERVED_STACK_WORDS ) +import CLabel ( mkIntlikeClosureLabel, mkCharlikeClosureLabel, + mkMAP_FROZEN_infoLabel, + mkForeignLabel ) +import ForeignCall ( ForeignCall(..), CCallSpec(..), CCallTarget(..), + CCallConv(..), playSafe, playThreadSafe ) +import Outputable +import Util ( notNull ) +import FastString +import FastTypes + +#include "NCG.h" \end{code} -The main honcho here is genPrimCode, which handles the guts of COpStmts. +The main honchos here are primCode and foreignCallCode, which handle 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 - -> PrimOp -- op +foreignCallCode + :: [CAddrMode] -- results + -> ForeignCall -- op -> [CAddrMode] -- args - -> SUniqSM StixTreeList - + -> UniqSM StixStmtList \end{code} -First, the dreaded @ccall@. We can't handle @casm@s. +%************************************************************************ +%* * +\subsubsection{Code for foreign calls} +%* * +%************************************************************************ -Usually, this compiles to an assignment, but when the left-hand side is -empty, we just perform the call and ignore the result. +First, the dreaded @ccall@. We can't handle @casm@s. -ToDo ADR: modify this to handle Malloc Ptrs. +Usually, this compiles to an assignment, but when the left-hand side +is empty, we just perform the call and ignore the result. 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. - -\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 - -\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. - -\begin{code} - -genPrimCode target [res] IntegerCmpOp args = gmpCompare target res args - -genPrimCode target [res] Integer2IntOp arg = gmpInteger2Int target res arg - -genPrimCode target res Int2IntegerOp args = gmpInt2Integer target res args - -genPrimCode target res Word2IntegerOp args = panic "genPrimCode:Word2IntegerOp" - -genPrimCode target res Addr2IntegerOp args = gmpString2Integer target res args - -genPrimCode target res FloatEncodeOp args = - encodeFloatingKind FloatKind target res args - -genPrimCode target res DoubleEncodeOp args = - encodeFloatingKind DoubleKind target res args +ToDo: saving/restoring of volatile regs around ccalls. -genPrimCode target res FloatDecodeOp args = - decodeFloatingKind FloatKind target res args - -genPrimCode target res DoubleDecodeOp args = - decodeFloatingKind DoubleKind target res args - -genPrimCode target res Int2AddrOp arg = - simpleCoercion target AddrKind res arg - -genPrimCode target res Addr2IntOp arg = - simpleCoercion target IntKind res arg - -genPrimCode target res Int2WordOp arg = - simpleCoercion target IntKind{-WordKind?-} res arg - -genPrimCode target res Word2IntOp arg = - simpleCoercion target IntKind res arg - -\end{code} - -@newArray#@ ops allocate heap space. +JRS, 001113: always do the call of suspendThread and resumeThread as a ccall +rather than inheriting the calling convention of the thing which we're really +calling. \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 - (StPrim IntNegOp [StPrim IntSubOp [space, StInt 1]]) - assign = StAssign PtrKind result loc - initialise = StCall SLIT("newArrZh_init") VoidKind [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 - (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)))]) - in - heapCheck target liveness space (StInt 0) - `thenSUs` \ heap_chk -> - - returnSUs (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 - in - returnSUs (\xs -> assign : xs) - -genPrimCode target res SameMutableByteArrayOp args = - genPrimCode target 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). - -\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 - in - returnSUs (\xs -> assign : freeze : xs) - -genPrimCode target lhs UnsafeFreezeByteArrayOp rhs = - simpleCoercion target PtrKind lhs rhs - -\end{code} - -Most other array primitives translate to simple indexing. - -\begin{code} - -genPrimCode target lhs IndexArrayOp args = - genPrimCode target 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')) - 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' +foreignCallCode lhs call@(CCall (CCallSpec ctarget cconv safety)) rhs + + | not (playSafe safety) + = returnUs (\xs -> ccall : xs) + + | otherwise + = save_thread_state `thenUs` \ save -> + load_thread_state `thenUs` \ load -> + getUniqueUs `thenUs` \ uniq -> + let + id = StixTemp (StixVReg uniq IntRep) + + is_threadSafe + | playThreadSafe safety = 1 + | otherwise = 0 + + suspend = StAssignReg IntRep id + (StCall (Left FSLIT("suspendThread")) {-no:cconv-} CCallConv + IntRep [StReg stgBaseReg, StInt is_threadSafe ]) + resume = StVoidable + (StCall (Left FSLIT("resumeThread")) {-no:cconv-} CCallConv + VoidRep [StReg id, StInt is_threadSafe ]) in - returnSUs (\xs -> assign : xs) + returnUs (\xs -> save (suspend : ccall : resume : load xs)) -genPrimCode target lhs (IndexByteArrayOp pk) args = - genPrimCode target lhs (ReadByteArrayOp pk) args - -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')) - 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' - 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')) - in - returnSUs (\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 - call = StCall SLIT("deRefStablePointer") pk [sp', smStablePtrTable] - assign = StAssign pk lhs' call - in - returnSUs (\xs -> assign : xs) - -\end{code} - -Now the hard one. For comparison, here's the code from StgMacros: - -\begin{verbatim} -#define makeStablePtrZh(stablePtr,liveness,unstablePtr) \ -do { \ - 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; \ -} while (0) -\end{verbatim} - -ToDo ADR: finish this. (Boy, this is hard work!) - -Notes for ADR: - trMumbles are now just StMumbles. - StInt 1 is how to write ``1'' - temporaries are allocated at the end of the heap (see notes in StixInteger) - Good luck! - - --JSM - -\begin{pseudocode} -genPrimCode sty md [lhs] MakeStablePtrOp args = - let - -- some useful abbreviations (I'm sure these must exist already) - 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]] - - -- 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]] - - -- 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], - inc (spt_TOP c), - spt_POP c x = [ - dec (spt_TOP c), - trAssign PtrKind [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 - - spt = smStablePtrTable - - newSPT = -- a temporary (don't know how to allocate it) - newSP = -- another temporary - - allocNewTable = -- some sort fo heap allocation needed - copyOldTable = trCall "enlargeSPTable" PtrKind [newSPT, spt] - - enlarge = - allocNewTable ++ [ - copyOldTable, - trAssign PtrKind [spt, newSPT] - allocate = [ - spt_POP spt newSP, - trAssign PtrKind [spt_SPTR spt newSP, unstable], - trAssign StablePtrKind [lhs', newSP] - ] - - in - getUniqLabelCTS `thenCTS` \ oklbl -> - returnCodes sty md - (spt_EMPTY spt oklbl : (enlarge ++ (trLabel [oklbl] : allocate))) -\end{pseudocode} - - -Now the more mundane operations. - -\begin{code} - -genPrimCode target lhs op rhs = - let lhs' = map (amodeToStix target) lhs - rhs' = map (amodeToStix' target) 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) - -\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. - -\begin{code} - -simplePrim - :: Target - -> [StixTree] - -> PrimOp - -> [StixTree] - -> StixTree - -\end{code} - -Now look for something more conventional. - -\begin{code} - -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_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") + where + (cargs, stix_target) + = case ctarget of + StaticTarget nm -> (rhs, Left nm) + DynamicTarget | notNull rhs -- an assertion + -> (tail rhs, Right (amodeToStix (head rhs))) + CasmTarget _ + -> ncgPrimopMoan "Native code generator can't handle foreign call" + (ppr call) + + stix_args = map amodeToStix' cargs + + ccall = case lhs of + [] -> StVoidable (StCall stix_target cconv VoidRep stix_args) + [lhs] -> mkStAssign pk lhs' (StCall stix_target cconv pk stix_args) + where + lhs' = amodeToStix lhs + pk = case getAmodeRep lhs of + FloatRep -> FloatRep + DoubleRep -> DoubleRep + Int64Rep -> Int64Rep + Word64Rep -> Word64Rep + other -> IntRep + +-- a bit late to catch this here.. +foreignCallCode _ DNCall{} _ + = panic "foreignCallCode: .NET interop not supported via NCG; compile with -fvia-C" \end{code} -%--------------------------------------------------------------------- - -Here we generate the Stix code for CAddrModes. +%************************************************************************ +%* * +\subsubsection{Code for @CAddrMode@s} +%* * +%************************************************************************ -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 -> StixExpr -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))) +amodeToStix'{-'-} am@(CVal rr CharRep) + | mixedTypeLocn am = StMachOp MO_NatS_to_32U [amodeToStix am] + | otherwise = amodeToStix am +amodeToStix' am + = amodeToStix am -amodeCode target (CAddr r@(SpBRel spB off)) = - StIndex IntKind stgSpB (StInt (toInteger (spBRelToInt r))) +----------- +amodeToStix am@(CVal rr CharRep) + | mixedTypeLocn am + = StInd IntRep (amodeToStix (CAddr rr)) -amodeCode target (CAddr (HpRel hp off)) = - StIndex IntKind stgHp (StInt (toInteger (-(hpRel target (hp `subOff` off))))) +amodeToStix (CVal rr pk) = StInd pk (amodeToStix (CAddr rr)) -amodeCode target (CAddr (NodeRel off)) = - StIndex IntKind stgNode (StInt (toInteger (hpRel target off))) +amodeToStix (CAddr (SpRel off)) + = StIndex PtrRep (StReg stgSp) (StInt (toInteger (iBox off))) -amodeCode target (CReg magic) = StReg (StixMagicId magic) -amodeCode target (CTemp uniq pk) = StReg (StixTemp uniq pk) +amodeToStix (CAddr (HpRel off)) + = StIndex IntRep (StReg stgHp) (StInt (toInteger (- (iBox off)))) -amodeCode target (CLbl lbl _) = StCLbl lbl +amodeToStix (CAddr (NodeRel off)) + = StIndex IntRep (StReg stgNode) (StInt (toInteger (iBox off))) -amodeCode target (CUnVecLbl dir _) = StCLbl dir +amodeToStix (CAddr (CIndex base off pk)) + = StIndex pk (amodeToStix base) (amodeToStix off) -amodeCode target (CTableEntry base off pk) = - StInd pk (StIndex pk (amodeCode target base) (amodeCode target off)) +amodeToStix (CReg magic) = StReg (StixMagicId magic) +amodeToStix (CTemp uniq pk) = StReg (StixTemp (StixVReg uniq pk)) --- For CharLike and IntLike, we attempt some trivial constant-folding here. +amodeToStix (CLbl lbl _) = StCLbl lbl -amodeCode target (CCharLike (CLit (MachChar c))) = - StLitLbl (uppBeside (uppPStr SLIT("CHARLIKE_closures+")) (uppInt off)) - where off = charLikeClosureSize target * ord c + -- For CharLike and IntLike, we attempt some trivial constant-folding here. -amodeCode target (CCharLike x) = - StPrim IntAddOp [charLike, off] - where off = StPrim IntMulOp [amodeCode target x, - StInt (toInteger (charLikeClosureSize target))] - -amodeCode target (CIntLike (CLit (MachInt i _))) = - StPrim IntAddOp [intLikePtr, StInt off] - where off = toInteger (intLikeClosureSize target) * i - -amodeCode target (CIntLike x) = - StPrim IntAddOp [intLikePtr, off] - where off = StPrim IntMulOp [amodeCode target x, - StInt (toInteger (intLikeClosureSize target))] - --- 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))) + = StIndex Word8Rep cHARLIKE_closure (StInt (toInteger off)) + where + off = charLikeSize * (c - mIN_CHARLIKE) --- COffsets are in words, not bytes! -amodeCode target (COffset off) = StInt (toInteger (hpRel target off)) +amodeToStix (CCharLike x) + = panic "amodeToStix.CCharLike" -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))) + = StIndex Word8Rep iNTLIKE_closure (StInt (toInteger off)) where - tag = StInd IntKind (StIndex IntKind (amodeToStix target arg) (StInt (-2))) - -- That ``-2'' really bothers me. (JSM) - -amodeCode target (CCostCentre cc print_as_string) - = if noCostCentreAttached cc - then StComment SLIT("") -- sigh - else panic "amodeCode:CCostCentre" + off = intLikeSize * (fromInteger (i - mIN_INTLIKE)) + +amodeToStix (CIntLike x) + = panic "amodeToStix.CIntLike" + +amodeToStix (CLit core) + = case core of + MachChar c -> StInt (toInteger c) + MachStr s -> StString s + MachNullAddr -> StInt 0 + MachInt i -> StInt i + MachWord w -> case word2IntLit core of MachInt iw -> StInt iw + MachLitLit s _ -> litLitErr + -- dreadful, but rare. + MachLabel l (Just x) -> StCLbl (mkForeignLabel (mkFastString (unpackFS l ++ '@':show x)) False) + MachLabel l _ -> StCLbl (mkForeignLabel l False{-ToDo: dynamic-}) + MachFloat d -> StFloat d + MachDouble d -> StDouble d + _ -> panic "amodeToStix:core literal" + +amodeToStix (CMacroExpr _ macro [arg]) + = let + arg_amode = amodeToStix arg + in + case macro of + ENTRY_CODE -> arg_amode + ARG_TAG -> arg_amode -- just an integer no. of words + GET_TAG -> +#ifdef WORDS_BIGENDIAN + StMachOp MO_Nat_And + [StInd WordRep (StIndex PtrRep arg_amode + (StInt (toInteger (-1)))), + StInt 65535] +#else + StMachOp MO_Nat_Shr + [StInd WordRep (StIndex PtrRep arg_amode + (StInt (toInteger (-1)))), + StInt 16] +#endif + UPD_FRAME_UPDATEE + -> StInd PtrRep (StIndex PtrRep arg_amode + (StInt (toInteger uF_UPDATEE))) + + BYTE_ARR_CTS -> StIndex IntRep arg_amode arrWordsHS + PTRS_ARR_CTS -> StIndex PtrRep arg_amode arrPtrsHS + ForeignObj_CLOSURE_DATA -> StInd PtrRep (StIndex PtrRep arg_amode fixedHS) + + +amodeToStix other + = pprPanic "StixPrim.amodeToStix" (pprAmode other) + +litLitErr + = ncgPrimopMoan "native code generator can't handle lit-lits" empty \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")) +iNTLIKE_closure :: StixExpr +iNTLIKE_closure = StCLbl mkIntlikeClosureLabel -- The CHARLIKE base -charLike :: StixTree - -charLike = sStLitLbl SLIT("CHARLIKE_closures") +cHARLIKE_closure :: StixExpr +cHARLIKE_closure = StCLbl mkCharlikeClosureLabel --- Trees for the ErrorIOPrimOp +mutArrPtrsFrozen_info = StCLbl mkMAP_FROZEN_infoLabel -topClosure, flushStdout, flushStderr, errorIO :: StixTree +-- these are the sizes of charLike and intLike closures, in _bytes_. +charLikeSize = (fixedHdrSize + 1) * (getPrimRepSizeInBytes PtrRep) +intLikeSize = (fixedHdrSize + 1) * (getPrimRepSizeInBytes PtrRep) +\end{code} -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"))) +\begin{code} +save_thread_state + = getUniqueUs `thenUs` \ tso_uq -> + let tso = StixTemp (StixVReg tso_uq PtrRep) in + returnUs (\xs -> + StAssignReg PtrRep tso (StReg stgCurrentTSO) + : StAssignMem PtrRep + (StMachOp MO_Nat_Add + [StReg tso, StInt (toInteger (TSO_SP*BYTES_PER_WORD))]) + (StReg stgSp) + : StAssignMem PtrRep + (StMachOp MO_Nat_Add + [StReg stgCurrentNursery, + StInt (toInteger (BDESCR_FREE * BYTES_PER_WORD))]) + (StMachOp MO_Nat_Add + [StReg stgHp, StInt (toInteger (1 * BYTES_PER_WORD))]) + : xs + ) + +load_thread_state + = getUniqueUs `thenUs` \ tso_uq -> + let tso = StixTemp (StixVReg tso_uq PtrRep) in + returnUs (\xs -> + StAssignReg PtrRep tso (StReg stgCurrentTSO) + : StAssignReg PtrRep + stgSp + (StInd PtrRep + (StMachOp MO_Nat_Add + [StReg tso, StInt (toInteger (TSO_SP*BYTES_PER_WORD))])) + : StAssignReg PtrRep + stgSpLim + (StMachOp MO_Nat_Add + [StReg tso, + StInt (toInteger ((TSO_STACK + rESERVED_STACK_WORDS) + *BYTES_PER_WORD))]) + : StAssignReg PtrRep + stgHp + (StMachOp MO_Nat_Sub + [StInd PtrRep + (StMachOp MO_Nat_Add + [StReg stgCurrentNursery, + StInt (toInteger (BDESCR_FREE * BYTES_PER_WORD))]), + StInt (toInteger (1 * BYTES_PER_WORD)) + ]) + : StAssignReg PtrRep + stgHpLim + (StIndex Word8Rep + (StInd PtrRep + (StIndex PtrRep (StReg stgCurrentNursery) + (StInt (toInteger BDESCR_START)) + ) + ) + (StMachOp MO_Nat_Sub + [StMachOp MO_NatU_Mul + [StInd WordRep + (StIndex PtrRep (StReg stgCurrentNursery) + (StInt (toInteger BDESCR_BLOCKS))), + StInt (toInteger bLOCK_SIZE{-in bytes-}) + ], + StInt (1 * BYTES_PER_WORD) + ] + ) + + ) + + : xs + ) \end{code} -