%
-% (c) The AQUA Project, Glasgow University, 1993-1995
+% (c) The AQUA Project, Glasgow University, 1993-1998
%
\begin{code}
-#include "HsVersions.h"
+module StixMacro ( macroCode, checkCode ) where
-module StixMacro (
- genMacroCode, doHeapCheck, smStablePtrTable,
+#include "HsVersions.h"
+#include "nativeGen/NCG.h"
- Target, StixTree, SplitUniqSupply, CAddrMode, CExprMacro,
- CStmtMacro
- ) where
+import {-# SOURCE #-} StixPrim ( amodeToStix )
-import AbsCSyn
-import AbsPrel ( PrimOp(..)
- IF_ATTACK_PRAGMAS(COMMA tagOf_PrimOp)
- IF_ATTACK_PRAGMAS(COMMA pprPrimOp)
- )
-import MachDesc {- lots -}
-import CgCompInfo ( sTD_UF_SIZE, uF_RET, uF_SUA, uF_SUB, uF_UPDATEE )
+import MachRegs
+import AbsCSyn ( CStmtMacro(..), MagicId(..), CAddrMode, tagreg,
+ CCheckMacro(..) )
+import Constants ( uF_RET, uF_SU, uF_UPDATEE, uF_SIZE, sEQ_FRAME_SIZE )
+import CallConv ( cCallConv )
+import PrimOp ( PrimOp(..) )
+import PrimRep ( PrimRep(..) )
import Stix
-import SplitUniq
-import Unique
-import Util
-
+import UniqSupply ( returnUs, thenUs, UniqSM )
+import CLabel ( mkBlackHoleInfoTableLabel, mkIndStaticInfoLabel,
+ mkIndInfoLabel, mkUpdInfoLabel, mkSeqInfoLabel,
+ mkRtsGCEntryLabel, mkStgUpdatePAPLabel )
\end{code}
The @ARGS_CHK_A{_LOAD_NODE}@ macros check for sufficient arguments on
closure address.
\begin{code}
-mkIntCLit_0 = mkIntCLit 0 -- out here to avoid CAF (sigh)
-mkIntCLit_3 = mkIntCLit 3
-
-genMacroCode
- :: Target
- -> CStmtMacro -- statement macro
+macroCode
+ :: CStmtMacro -- statement macro
-> [CAddrMode] -- args
- -> SUniqSM StixTreeList
-
-genMacroCode target ARGS_CHK_A_LOAD_NODE args =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let [words, lbl] = map (amodeToStix target) args
- temp = StIndex PtrKind stgSpA words
- test = StPrim AddrGeOp [stgSuA, temp]
- cjmp = StCondJump ulbl test
- assign = StAssign PtrKind stgNode lbl
- join = StLabel ulbl
- in
- returnSUs (\xs -> cjmp : assign : updatePAP : join : xs)
-
-genMacroCode target ARGS_CHK_A [words] =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let temp = StIndex PtrKind stgSpA (amodeToStix target words)
- test = StPrim AddrGeOp [stgSuA, temp]
- cjmp = StCondJump ulbl test
- join = StLabel ulbl
- in
- returnSUs (\xs -> cjmp : updatePAP : join : xs)
-
+ -> UniqSM StixTreeList
\end{code}
-Like the macros above, the @ARGS_CHK_B{_LOAD_NODE}@ macros check for
-sufficient arguments on the B stack, and perform a tail call to
-@UpdatePAP@ if the arguments are not there. The @_LOAD_NODE@ version
-also loads R1 with an appropriate closure address. Note that the
-directions are swapped relative to the A stack.
+-----------------------------------------------------------------------------
+Argument satisfaction checks.
\begin{code}
-
-genMacroCode target ARGS_CHK_B_LOAD_NODE args =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let [words, lbl] = map (amodeToStix target) args
- temp = StIndex PtrKind stgSuB (StPrim IntNegOp [words])
- test = StPrim AddrGeOp [stgSpB, temp]
- cjmp = StCondJump ulbl test
- assign = StAssign PtrKind stgNode lbl
- join = StLabel ulbl
+macroCode ARGS_CHK_LOAD_NODE args
+ = getUniqLabelNCG `thenUs` \ ulbl ->
+ let
+ [words, lbl] = map amodeToStix args
+ temp = StIndex PtrRep stgSp words
+ test = StPrim AddrGeOp [stgSu, temp]
+ cjmp = StCondJump ulbl test
+ assign = StAssign PtrRep stgNode lbl
+ join = StLabel ulbl
in
- returnSUs (\xs -> cjmp : assign : updatePAP : join : xs)
+ returnUs (\xs -> cjmp : assign : updatePAP : join : xs)
-genMacroCode target ARGS_CHK_B [words] =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let temp = StIndex PtrKind stgSuB (StPrim IntNegOp [amodeToStix target words])
- test = StPrim AddrGeOp [stgSpB, temp]
+macroCode ARGS_CHK [words]
+ = getUniqLabelNCG `thenUs` \ ulbl ->
+ let temp = StIndex PtrRep stgSp (amodeToStix words)
+ test = StPrim AddrGeOp [stgSu, temp]
cjmp = StCondJump ulbl test
join = StLabel ulbl
in
- returnSUs (\xs -> cjmp : updatePAP : join : xs)
-
+ returnUs (\xs -> cjmp : updatePAP : join : xs)
\end{code}
-The @HEAP_CHK@ macro checks to see that there are enough words
-available in the heap (before reaching @HpLim@). When a heap check
-fails, it has to call @PerformGC@ via the @PerformGC_wrapper@. The
-call wrapper saves all of our volatile registers so that we don't have to.
-
-Since there are @HEAP_CHK@s buried at unfortunate places in the integer
-primOps, this is just a wrapper.
-
-\begin{code}
-
-genMacroCode target HEAP_CHK args =
- let [liveness,words,reenter] = map (amodeToStix target) args
- in
- doHeapCheck target liveness words reenter
-
-\end{code}
+-----------------------------------------------------------------------------
+Updating a CAF
-The @STK_CHK@ macro checks for enough space on the stack between @SpA@
-and @SpB@. A stack check can be complicated in the parallel world,
-but for the sequential case, we just need to ensure that we have
-enough space to continue. Not that @_StackOverflow@ doesn't return,
-so we don't have to @callWrapper@ it.
+@UPD_CAF@ involves changing the info pointer of the closure, and
+adding an indirection.
\begin{code}
-
-genMacroCode target STK_CHK [liveness, aWords, bWords, spa, spb, prim, reenter] =
-{- Need to check to see if we are compiling with stack checks
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let words = StPrim IntNegOp
- [StPrim IntAddOp [amodeToStix target aWords, amodeToStix target bWords]]
- temp = StIndex PtrKind stgSpA words
- test = StPrim AddrGtOp [temp, stgSpB]
- cjmp = StCondJump ulbl test
- join = StLabel ulbl
+macroCode UPD_CAF args
+ = let
+ [cafptr,bhptr] = map amodeToStix args
+ w0 = StInd PtrRep cafptr
+ w1 = StInd PtrRep (StIndex PtrRep cafptr fixedHS)
+ a1 = StAssign PtrRep w0 ind_static_info
+ a2 = StAssign PtrRep w1 bhptr
+ a3 = StCall SLIT("newCAF") cCallConv VoidRep [cafptr]
in
- returnSUs (\xs -> cjmp : stackOverflow : join : xs)
--}
- returnSUs id
-
+ returnUs (\xs -> a1 : a2 : a3 : xs)
\end{code}
-@UPD_CAF@ involves changing the info pointer of the closure, adding an indirection,
-and putting the new CAF on a linked list for the storage manager.
+-----------------------------------------------------------------------------
+Blackholing
-\begin{code}
-
-genMacroCode target UPD_CAF args =
- let [cafptr,bhptr] = map (amodeToStix target) args
- w0 = StInd PtrKind cafptr
- w1 = StInd PtrKind (StIndex PtrKind cafptr (StInt 1))
- w2 = StInd PtrKind (StIndex PtrKind cafptr (StInt 2))
- a1 = StAssign PtrKind w0 caf_info
- a2 = StAssign PtrKind w1 smCAFlist
- a3 = StAssign PtrKind w2 bhptr
- a4 = StAssign PtrKind smCAFlist cafptr
- in
- returnSUs (\xs -> a1 : a2 : a3 : a4 : xs)
+We do lazy blackholing: no need to overwrite thunks with blackholes
+the minute they're entered, as long as we do it before a context
+switch or garbage collection, that's ok.
-\end{code}
+Don't blackhole single entry closures, for the following reasons:
+
+ - if the compiler has decided that they won't be entered again,
+ that probably means that nothing has a pointer to it
+ (not necessarily true, but...)
-@UPD_IND@ is complicated by the fact that we are supporting the
-Appel-style garbage collector by default. This means some extra work
-if we update an old generation object.
+ - no need to blackhole for concurrency reasons, because nothing
+ can block on the result of this computation.
\begin{code}
+macroCode UPD_BH_UPDATABLE args = returnUs id
-genMacroCode target UPD_IND args =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let [updptr, heapptr] = map (amodeToStix target) args
- test = StPrim AddrGtOp [updptr, smOldLim]
- cjmp = StCondJump ulbl test
- updRoots = StAssign PtrKind smOldMutables updptr
- join = StLabel ulbl
- upd0 = StAssign PtrKind (StInd PtrKind updptr) ind_info
- upd1 = StAssign PtrKind (StInd PtrKind
- (StIndex PtrKind updptr (StInt 1))) smOldMutables
- upd2 = StAssign PtrKind (StInd PtrKind
- (StIndex PtrKind updptr (StInt 2))) heapptr
+macroCode UPD_BH_SINGLE_ENTRY args = returnUs id
+{-
+ = let
+ update = StAssign PtrRep (StInd PtrRep (amodeToStix arg)) bh_info
in
- returnSUs (\xs -> cjmp : upd1 : updRoots : join : upd0 : upd2 : xs)
-
-\end{code}
-
-@UPD_INPLACE_NOPTRS@ is only needed for ticky-ticky profiling.
-
-\begin{code}
-
-genMacroCode target UPD_INPLACE_NOPTRS args = returnSUs id
-
+ returnUs (\xs -> update : xs)
+-}
\end{code}
-@UPD_INPLACE_PTRS@ is complicated by the fact that we are supporting
-the Appel-style garbage collector by default. This means some extra work
-if we update an old generation object.
-
-\begin{code}
-
-genMacroCode target UPD_INPLACE_PTRS [liveness] =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let cjmp = StCondJump ulbl testOldLim
- testOldLim = StPrim AddrGtOp [stgNode, smOldLim]
- join = StLabel ulbl
- updUpd0 = StAssign PtrKind (StInd PtrKind stgNode) ind_info
- updUpd1 = StAssign PtrKind (StInd PtrKind
- (StIndex PtrKind stgNode (StInt 1))) smOldMutables
- updUpd2 = StAssign PtrKind (StInd PtrKind
- (StIndex PtrKind stgNode (StInt 2))) hpBack2
- hpBack2 = StIndex PtrKind stgHp (StInt (-2))
- updOldMutables = StAssign PtrKind smOldMutables stgNode
- updUpdReg = StAssign PtrKind stgNode hpBack2
- in
- genMacroCode target HEAP_CHK [liveness, mkIntCLit_3, mkIntCLit_0]
- `thenSUs` \ heap_chk ->
- returnSUs (\xs -> (cjmp :
- heap_chk (updUpd0 : updUpd1 : updUpd2 :
- updOldMutables : updUpdReg : join : xs)))
-
-\end{code}
+-----------------------------------------------------------------------------
+Update frames
-@UPD_BH_UPDATABLE@ is only used when running concurrent threads (in
-the sequential case, the GC takes care of this). However, we do need
-to handle @UPD_BH_SINGLE_ENTRY@ in all cases.
+Push a four word update frame on the stack and slide the Su registers
+to the current Sp location.
\begin{code}
-
-genMacroCode target UPD_BH_UPDATABLE args = returnSUs id
-
-genMacroCode target UPD_BH_SINGLE_ENTRY [arg] =
- let
- update = StAssign PtrKind (StInd PtrKind (amodeToStix target arg)) bh_info
+macroCode PUSH_UPD_FRAME args
+ = let
+ [bhptr, _{-0-}] = map amodeToStix args
+ frame n = StInd PtrRep
+ (StIndex PtrRep stgSp (StInt (toInteger (n-uF_SIZE))))
+
+ -- HWL: these values are *wrong* in a GranSim setup; ToDo: fix
+ a1 = StAssign PtrRep (frame uF_RET) upd_frame_info
+ a3 = StAssign PtrRep (frame uF_SU) stgSu
+ a4 = StAssign PtrRep (frame uF_UPDATEE) bhptr
+
+ updSu = StAssign PtrRep stgSu
+ (StIndex PtrRep stgSp (StInt (toInteger (-uF_SIZE))))
in
- returnSUs (\xs -> update : xs)
-
+ returnUs (\xs -> a1 : a3 : a4 : updSu : xs)
+
+
+macroCode PUSH_SEQ_FRAME args
+ = let [arg_frame] = map amodeToStix args
+ frame n = StInd PtrRep
+ (StIndex PtrRep arg_frame (StInt (toInteger n)))
+ a1 = StAssign PtrRep (frame 0) seq_frame_info
+ a2 = StAssign PtrRep (frame 1) stgSu
+ updSu = StAssign PtrRep stgSu arg_frame
+ in
+ returnUs (\xs -> a1 : a2 : updSu : xs)
+
+
+macroCode UPDATE_SU_FROM_UPD_FRAME args
+ = let [arg_frame] = map amodeToStix args
+ frame n = StInd PtrRep
+ (StIndex PtrRep arg_frame (StInt (toInteger n)))
+ updSu
+ = StAssign PtrRep stgSu (frame uF_SU)
+ in
+ returnUs (\xs -> updSu : xs)
\end{code}
-Push a four word update frame on the stack and slide the Su[AB]
-registers to the current Sp[AB] locations.
-
-\begin{code}
-
-genMacroCode target PUSH_STD_UPD_FRAME args =
- let [bhptr, aWords, bWords] = map (amodeToStix target) args
- frame n = StInd PtrKind
- (StIndex PtrKind stgSpB (StPrim IntAddOp
- [bWords, StInt (toInteger (sTD_UF_SIZE - n))]))
-
- a1 = StAssign PtrKind (frame uF_RET) stgRetReg
- a2 = StAssign PtrKind (frame uF_SUB) stgSuB
- a3 = StAssign PtrKind (frame uF_SUA) stgSuA
- a4 = StAssign PtrKind (frame uF_UPDATEE) bhptr
-
- updSuB = StAssign PtrKind
- stgSuB (StIndex PtrKind stgSpB (StPrim IntAddOp
- [bWords, StInt (toInteger sTD_UF_SIZE)]))
- updSuA = StAssign PtrKind
- stgSuA (StIndex PtrKind stgSpA (StPrim IntNegOp [aWords]))
- in
- returnSUs (\xs -> a1 : a2 : a3 : a4 : updSuB : updSuA : xs)
-
-\end{code}
+-----------------------------------------------------------------------------
+Setting the tag register
-Pop a standard update frame.
+This one only applies if we have a machine register devoted to TagReg.
\begin{code}
-
-genMacroCode target POP_STD_UPD_FRAME args =
- let frame n = StInd PtrKind (StIndex PtrKind stgSpB (StInt (toInteger (-n))))
-
- grabRet = StAssign PtrKind stgRetReg (frame uF_RET)
- grabSuB = StAssign PtrKind stgSuB (frame uF_SUB)
- grabSuA = StAssign PtrKind stgSuA (frame uF_SUA)
-
- updSpB = StAssign PtrKind
- stgSpB (StIndex PtrKind stgSpB (StInt (toInteger (-sTD_UF_SIZE))))
+macroCode SET_TAG [tag]
+ = let set_tag = StAssign IntRep stgTagReg (amodeToStix tag)
in
- returnSUs (\xs -> grabRet : grabSuB : grabSuA : updSpB : xs)
-
-\end{code}
-
-@PUSH_CON_UPD_FRAME@ appears to be unused at the moment.
-
-\begin{code}
-{- UNUSED:
-genMacroCode target PUSH_CON_UPD_FRAME args =
- panic "genMacroCode:PUSH_CON_UPD_FRAME"
--}
+ case stgReg tagreg of
+ Always _ -> returnUs id
+ Save _ -> returnUs (\ xs -> set_tag : xs)
\end{code}
-The @SET_ARITY@ and @CHK_ARITY@ macros are disabled for ``normal'' compilation.
+-----------------------------------------------------------------------------
\begin{code}
-
-genMacroCode target SET_ARITY args = returnSUs id
-genMacroCode target CHK_ARITY args = returnSUs id
-
+macroCode REGISTER_IMPORT [arg]
+ = returnUs (
+ \xs -> StAssign WordRep (StInd WordRep stgSp) (amodeToStix arg)
+ : StAssign PtrRep stgSp (StPrim IntAddOp [stgSp, StInt 4])
+ : xs
+ )
+
+macroCode REGISTER_FOREIGN_EXPORT [arg]
+ = returnUs (
+ \xs -> StCall SLIT("getStablePtr") cCallConv VoidRep [amodeToStix arg]
+ : xs
+ )
+
+macroCode other args
+ = case other of
+ SET_TAG -> error "foobarxyzzy8"
+ _ -> error "StixMacro.macroCode: unknown macro/args"
\end{code}
-This one only applies if we have a machine register devoted to TagReg.
-
-\begin{code}
-
-genMacroCode target SET_TAG [tag] =
- let set_tag = StAssign IntKind stgTagReg (amodeToStix target tag)
- in
- case stgReg target TagReg of
- Always _ -> returnSUs id
- Save _ -> returnSUs (\xs -> set_tag : xs)
-
-\end{code}
Do the business for a @HEAP_CHK@, having converted the args to Trees
of StixOp.
-\begin{code}
-
-doHeapCheck
- :: Target
- -> StixTree -- liveness
- -> StixTree -- words needed
- -> StixTree -- always reenter node? (boolean)
- -> SUniqSM StixTreeList
-
-doHeapCheck target liveness words reenter =
- getUniqLabelNCG `thenSUs` \ ulbl ->
- let newHp = StIndex PtrKind stgHp words
- assign = StAssign PtrKind stgHp newHp
- test = StPrim AddrLeOp [stgHp, stgHpLim]
- cjmp = StCondJump ulbl test
- arg = StPrim IntAddOp [StPrim IntMulOp [words, StInt 256], liveness]
- -- ToDo: Overflow? (JSM)
- gc = StCall SLIT("PerformGC_wrapper") VoidKind [arg]
- join = StLabel ulbl
- in
- returnSUs (\xs -> assign : cjmp : gc : join : xs)
-
-\end{code}
-
+-----------------------------------------------------------------------------
Let's make sure that these CAFs are lifted out, shall we?
\begin{code}
-
-- Some common labels
-bh_info, caf_info, ind_info :: StixTree
-
-bh_info = sStLitLbl SLIT("BH_SINGLE_info")
-caf_info = sStLitLbl SLIT("Caf_info")
-ind_info = sStLitLbl SLIT("Ind_info")
+bh_info, ind_static_info, ind_info :: StixTree
+bh_info = StCLbl mkBlackHoleInfoTableLabel
+ind_static_info = StCLbl mkIndStaticInfoLabel
+ind_info = StCLbl mkIndInfoLabel
+upd_frame_info = StCLbl mkUpdInfoLabel
+seq_frame_info = StCLbl mkSeqInfoLabel
+stg_update_PAP = StCLbl mkStgUpdatePAPLabel
-- Some common call trees
updatePAP, stackOverflow :: StixTree
-updatePAP = StJump (sStLitLbl SLIT("UpdatePAP"))
-stackOverflow = StCall SLIT("StackOverflow") VoidKind []
-
+updatePAP = StJump NoDestInfo stg_update_PAP
+stackOverflow = StCall SLIT("StackOverflow") cCallConv VoidRep []
\end{code}
-Storage manager nonsense. Note that the indices are dependent on
-the definition of the smInfo structure in SMinterface.lh
+-----------------------------------------------------------------------------
+Heap/Stack checks
\begin{code}
-
-#include "../../includes/platform.h"
-
-#if alpha_TARGET_ARCH
-#include "../../includes/alpha-dec-osf1.h"
-#else
-#if sunos4_TARGET_OS
-#include "../../includes/sparc-sun-sunos4.h"
-#else
-#include "../../includes/sparc-sun-solaris2.h"
-#endif
-#endif
-
-storageMgrInfo, smCAFlist, smOldMutables, smOldLim :: StixTree
-
-storageMgrInfo = sStLitLbl SLIT("StorageMgrInfo")
-smCAFlist = StInd PtrKind (StIndex PtrKind storageMgrInfo (StInt SM_CAFLIST))
-smOldMutables = StInd PtrKind (StIndex PtrKind storageMgrInfo (StInt SM_OLDMUTABLES))
-smOldLim = StInd PtrKind (StIndex PtrKind storageMgrInfo (StInt SM_OLDLIM))
-
-smStablePtrTable = StInd PtrKind
- (StIndex PtrKind storageMgrInfo (StInt SM_STABLEPOINTERTABLE))
-
+checkCode :: CCheckMacro -> [CAddrMode] -> StixTreeList -> UniqSM StixTreeList
+checkCode macro args assts
+ = getUniqLabelNCG `thenUs` \ ulbl_fail ->
+ getUniqLabelNCG `thenUs` \ ulbl_pass ->
+
+ let args_stix = map amodeToStix args
+ newHp wds = StIndex PtrRep stgHp wds
+ assign_hp wds = StAssign PtrRep stgHp (newHp wds)
+ test_hp = StPrim AddrLeOp [stgHp, stgHpLim]
+ cjmp_hp = StCondJump ulbl_pass test_hp
+
+ newSp wds = StIndex PtrRep stgSp (StPrim IntNegOp [wds])
+ test_sp_pass wds = StPrim AddrGeOp [newSp wds, stgSpLim]
+ test_sp_fail wds = StPrim AddrLtOp [newSp wds, stgSpLim]
+ cjmp_sp_pass wds = StCondJump ulbl_pass (test_sp_pass wds)
+ cjmp_sp_fail wds = StCondJump ulbl_fail (test_sp_fail wds)
+
+ assign_ret r ret = StAssign CodePtrRep r ret
+
+ fail = StLabel ulbl_fail
+ join = StLabel ulbl_pass
+
+ -- see includes/StgMacros.h for explaination of these magic consts
+ aLL_NON_PTRS
+ = IF_ARCH_alpha(16383,65535)
+
+ assign_liveness ptr_regs
+ = StAssign WordRep stgR9
+ (StPrim XorOp [StInt aLL_NON_PTRS, ptr_regs])
+ assign_reentry reentry
+ = StAssign WordRep stgR10 reentry
+ in
+
+ returnUs (
+ case macro of
+ HP_CHK_NP ->
+ let [words,ptrs] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_enter ptrs : join : xs))
+
+ HP_CHK_SEQ_NP ->
+ let [words,ptrs] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_seq ptrs : join : xs))
+
+ STK_CHK_NP ->
+ let [words,ptrs] = args_stix
+ in (\xs -> cjmp_sp_pass words :
+ assts (gc_enter ptrs : join : xs))
+
+ HP_STK_CHK_NP ->
+ let [sp_words,hp_words,ptrs] = args_stix
+ in (\xs -> cjmp_sp_fail sp_words :
+ assign_hp hp_words : cjmp_hp :
+ fail :
+ assts (gc_enter ptrs : join : xs))
+
+ HP_CHK ->
+ let [words,ret,r,ptrs] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (assign_ret r ret : gc_chk ptrs : join : xs))
+
+ STK_CHK ->
+ let [words,ret,r,ptrs] = args_stix
+ in (\xs -> cjmp_sp_pass words :
+ assts (assign_ret r ret : gc_chk ptrs : join : xs))
+
+ HP_STK_CHK ->
+ let [sp_words,hp_words,ret,r,ptrs] = args_stix
+ in (\xs -> cjmp_sp_fail sp_words :
+ assign_hp hp_words : cjmp_hp :
+ fail :
+ assts (assign_ret r ret : gc_chk ptrs : join : xs))
+
+ HP_CHK_NOREGS ->
+ let [words] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_noregs : join : xs))
+
+ HP_CHK_UNPT_R1 ->
+ let [words] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_unpt_r1 : join : xs))
+
+ HP_CHK_UNBX_R1 ->
+ let [words] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_unbx_r1 : join : xs))
+
+ HP_CHK_F1 ->
+ let [words] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_f1 : join : xs))
+
+ HP_CHK_D1 ->
+ let [words] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (gc_d1 : join : xs))
+
+ HP_CHK_UT_ALT ->
+ let [words,ptrs,nonptrs,r,ret] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (assign_ret r ret : gc_ut ptrs nonptrs
+ : join : xs))
+
+ HP_CHK_GEN ->
+ let [words,liveness,reentry] = args_stix
+ in (\xs -> assign_hp words : cjmp_hp :
+ assts (assign_liveness liveness :
+ assign_reentry reentry :
+ gc_gen : join : xs))
+ )
+
+-- Various canned heap-check routines
+
+mkStJump_to_GCentry :: String -> StixTree
+mkStJump_to_GCentry gcname
+-- | opt_Static
+ = StJump NoDestInfo (StCLbl (mkRtsGCEntryLabel gcname))
+-- | otherwise -- it's in a different DLL
+-- = StJump (StInd PtrRep (StLitLbl True sdoc))
+
+gc_chk (StInt n) = mkStJump_to_GCentry ("stg_chk_" ++ show n)
+gc_enter (StInt n) = mkStJump_to_GCentry ("stg_gc_enter_" ++ show n)
+gc_seq (StInt n) = mkStJump_to_GCentry ("stg_gc_seq_" ++ show n)
+gc_noregs = mkStJump_to_GCentry "stg_gc_noregs"
+gc_unpt_r1 = mkStJump_to_GCentry "stg_gc_unpt_r1"
+gc_unbx_r1 = mkStJump_to_GCentry "stg_gc_unbx_r1"
+gc_f1 = mkStJump_to_GCentry "stg_gc_f1"
+gc_d1 = mkStJump_to_GCentry "stg_gc_d1"
+gc_gen = mkStJump_to_GCentry "stg_gen_chk"
+gc_ut (StInt p) (StInt np)
+ = mkStJump_to_GCentry ("stg_gc_ut_" ++ show p
+ ++ "_" ++ show np)
\end{code}
projects / ghc-hetmet.git / blobdiff