%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
%************************************************************************
%* *
\begin{code}
module PprAbsC (
writeRealC,
- dumpRealC
-#ifdef DEBUG
- , pprAmode -- otherwise, not exported
-#endif
+ dumpRealC,
+ pprAmode,
+ pprMagicId
) where
#include "HsVersions.h"
import AbsCUtils ( getAmodeRep, nonemptyAbsC,
mixedPtrLocn, mixedTypeLocn
)
-import Constants ( spARelToInt, spBRelToInt, mIN_UPD_SIZE )
-import CLabel ( externallyVisibleCLabel, mkErrorStdEntryLabel,
- isReadOnly, needsCDecl, pprCLabel,
- CLabel{-instance Ord-}
+
+import Constants ( mIN_UPD_SIZE )
+import CallConv ( callConvAttribute )
+import CLabel ( externallyVisibleCLabel,
+ needsCDecl, pprCLabel,
+ mkReturnInfoLabel, mkReturnPtLabel, mkClosureTblLabel,
+ mkClosureLabel, mkErrorStdEntryLabel,
+ CLabel, CLabelType(..), labelType, labelDynamic
)
-import CmdLineOpts ( opt_SccProfilingOn )
-import CostCentre ( uppCostCentre, uppCostCentreDecl )
+
+import CmdLineOpts ( opt_SccProfilingOn, opt_GranMacros )
+import CostCentre ( pprCostCentreDecl, pprCostCentreStackDecl )
+
import Costs ( costs, addrModeCosts, CostRes(..), Side(..) )
-import CStrings ( stringToC )
+import CStrings ( pprStringInCStyle, pprCLabelString )
import FiniteMap ( addToFM, emptyFM, lookupFM, FiniteMap )
-import HeapOffs ( isZeroOff, subOff, pprHeapOffset )
-import Literal ( showLiteral, Literal(..) )
+import Literal ( Literal(..) )
+import TyCon ( tyConDataCons )
+import Name ( NamedThing(..) )
+import DataCon ( DataCon{-instance NamedThing-}, dataConWrapId )
import Maybes ( maybeToBool, catMaybes )
-import PrimOp ( primOpNeedsWrapper, pprPrimOp, PrimOp(..) )
-import PrimRep ( isFloatingRep, PrimRep(..) )
-import SMRep ( getSMInfoStr, getSMInitHdrStr, getSMUpdInplaceHdrStr,
- isConstantRep, isSpecRep, isPhantomRep
- )
+import PrimOp ( primOpNeedsWrapper, pprPrimOp, pprCCallOp,
+ PrimOp(..), CCall(..), CCallTarget(..), isDynamicTarget )
+import PrimRep ( isFloatingRep, PrimRep(..), getPrimRepSize, showPrimRep )
+import SMRep ( pprSMRep )
import Unique ( pprUnique, Unique{-instance NamedThing-} )
import UniqSet ( emptyUniqSet, elementOfUniqSet,
addOneToUniqSet, UniqSet
)
+import StgSyn ( SRT(..) )
+import BitSet ( intBS )
import Outputable
-import Util ( nOfThem, panic, assertPanic )
+import Util ( nOfThem )
+
+import ST
+import MutableArray
infixr 9 `thenTE`
\end{code}
@pprAbsC@ has a new ``costs'' argument. %% HWL
\begin{code}
+{-
writeRealC :: Handle -> AbstractC -> IO ()
-writeRealC handle absC = printForC handle (pprAbsC absC (costs absC))
-
+writeRealC handle absC
+ -- avoid holding on to the whole of absC in the !Gransim case.
+ if opt_GranMacros
+ then printForCFast fp (pprAbsC absC (costs absC))
+ else printForCFast fp (pprAbsC absC (panic "costs"))
+ --printForC handle (pprAbsC absC (panic "costs"))
dumpRealC :: AbstractC -> SDoc
dumpRealC absC = pprAbsC absC (costs absC)
+-}
+
+writeRealC :: Handle -> AbstractC -> IO ()
+--writeRealC handle absC =
+-- _scc_ "writeRealC"
+-- printDoc LeftMode handle (pprAbsC absC (costs absC))
+
+writeRealC handle absC
+ | opt_GranMacros = _scc_ "writeRealC" printForC handle $
+ pprCode CStyle (pprAbsC absC (costs absC))
+ | otherwise = _scc_ "writeRealC" printForC handle $
+ pprCode CStyle (pprAbsC absC (panic "costs"))
+
+dumpRealC :: AbstractC -> SDoc
+dumpRealC absC
+ | opt_GranMacros = pprCode CStyle (pprAbsC absC (costs absC))
+ | otherwise = pprCode CStyle (pprAbsC absC (panic "costs"))
+
\end{code}
This emits the macro, which is used in GrAnSim to compute the total costs
\begin{code}
emitMacro :: CostRes -> SDoc
--- ToDo: Check a compile time flag to decide whether a macro should be emitted
+emitMacro _ | not opt_GranMacros = empty
+
emitMacro (Cost (i,b,l,s,f))
= hcat [ ptext SLIT("GRAN_EXEC"), char '(',
int i, comma, int b, comma, int l, comma,
int s, comma, int f, pp_paren_semi ]
-\end{code}
-\begin{code}
pp_paren_semi = text ");"
+\end{code}
--- ---------------------------------------------------------------------------
--- New type: Now pprAbsC also takes the costs for evaluating the Abstract C
--- code as an argument (that's needed when spitting out the GRAN_EXEC macro
--- which must be done before the return i.e. inside absC code) HWL
--- ---------------------------------------------------------------------------
+New type: Now pprAbsC also takes the costs for evaluating the Abstract C
+code as an argument (that's needed when spitting out the GRAN_EXEC macro
+which must be done before the return i.e. inside absC code) HWL
+\begin{code}
pprAbsC :: AbstractC -> CostRes -> SDoc
-
pprAbsC AbsCNop _ = empty
pprAbsC (AbsCStmts s1 s2) c = ($$) (pprAbsC s1 c) (pprAbsC s2 c)
-pprAbsC (CClosureUpdInfo info) c
- = pprAbsC info c
-
pprAbsC (CAssign dest src) _ = pprAssign (getAmodeRep dest) dest src
pprAbsC (CJump target) c
(hcat [text jmp_lit, target, pp_paren_semi ])
where
target = case return_info of
- DirectReturn -> hcat [ptext SLIT("DIRECT"),char '(', pprAmode am, rparen]
+ DirectReturn -> hcat [ptext SLIT("ENTRY_CODE"), lparen,
+ pprAmode am, rparen]
DynamicVectoredReturn am' -> mk_vector (pprAmode am')
StaticVectoredReturn n -> mk_vector (int n) -- Always positive
- mk_vector x = hcat [parens (pprAmode am), brackets (text "RVREL" <> parens x)]
+ mk_vector x = hcat [ptext SLIT("RET_VEC"), char '(', pprAmode am, comma,
+ x, rparen ]
-pprAbsC (CSplitMarker) _ = ptext SLIT("/* SPLIT */")
+pprAbsC (CSplitMarker) _ = ptext SLIT("__STG_SPLIT_MARKER")
-- we optimise various degenerate cases of CSwitches.
Just dc -> -- make it an "if"
do_if_stmt discrim tag alt_code dc c
-pprAbsC (CSwitch discrim [(tag1@(MachInt i1 _), alt_code1),
- (tag2@(MachInt i2 _), alt_code2)] deflt) c
+-- What problem is the re-ordering trying to solve ?
+pprAbsC (CSwitch discrim [(tag1@(MachInt i1), alt_code1),
+ (tag2@(MachInt i2), alt_code2)] deflt) c
| empty_deflt && ((i1 == 0 && i2 == 1) || (i1 == 1 && i2 == 0))
= if (i1 == 0) then
do_if_stmt discrim tag1 alt_code1 alt_code2 c
-- Costs for addressing header of switch and cond. branching -- HWL
switch_head_cost = addrModeCosts discrim Rhs + (Cost (0, 1, 0, 0, 0))
-pprAbsC stmt@(COpStmt results op@(CCallOp _ _ _ _ _) args liveness_mask vol_regs) _
- = pprCCall op args results liveness_mask vol_regs
+pprAbsC stmt@(COpStmt results (CCallOp ccall) args vol_regs) _
+ = pprCCall ccall args results vol_regs
-pprAbsC stmt@(COpStmt results op args liveness_mask vol_regs) _
+pprAbsC stmt@(COpStmt results op args vol_regs) _
= let
non_void_args = grab_non_void_amodes args
non_void_results = grab_non_void_amodes results
the_op = ppr_op_call non_void_results non_void_args
-- liveness mask is *in* the non_void_args
in
- case (ppr_vol_regs vol_regs) of { (pp_saves, pp_restores) ->
if primOpNeedsWrapper op then
+ case (ppr_vol_regs vol_regs) of { (pp_saves, pp_restores) ->
vcat [ pp_saves,
- the_op,
- pp_restores
- ]
+ the_op,
+ pp_restores
+ ]
+ }
else
the_op
- }
where
ppr_op_call results args
= hcat [ pprPrimOp op, lparen,
-- primop macros do their own casting of result;
-- hence we can toss the provided cast...
+pprAbsC stmt@(CSRT lbl closures) c
+ = case (pprTempAndExternDecls stmt) of { (_, pp_exts) ->
+ pp_exts
+ $$ ptext SLIT("SRT") <> lparen <> pprCLabel lbl <> rparen
+ $$ nest 2 (hcat (punctuate comma (map pp_closure_lbl closures)))
+ <> ptext SLIT("};")
+ }
+
+pprAbsC stmt@(CBitmap lbl mask) c
+ = vcat [
+ hcat [ ptext SLIT("BITMAP"), lparen,
+ pprCLabel lbl, comma,
+ int (length mask),
+ rparen ],
+ hcat (punctuate comma (map (int.intBS) mask)),
+ ptext SLIT("}};")
+ ]
+
pprAbsC (CSimultaneous abs_c) c
= hcat [ptext SLIT("{{"), pprAbsC abs_c c, ptext SLIT("}}")]
-pprAbsC stmt@(CMacroStmt macro as) _
- = hcat [text (show macro), lparen,
+pprAbsC (CCheck macro as code) c
+ = hcat [ptext (cCheckMacroText macro), lparen,
+ hcat (punctuate comma (map ppr_amode as)), comma,
+ pprAbsC code c, pp_paren_semi
+ ]
+pprAbsC (CMacroStmt macro as) _
+ = hcat [ptext (cStmtMacroText macro), lparen,
hcat (punctuate comma (map ppr_amode as)),pp_paren_semi] -- no casting
-pprAbsC stmt@(CCallProfCtrMacro op as) _
+pprAbsC (CCallProfCtrMacro op as) _
= hcat [ptext op, lparen,
hcat (punctuate comma (map ppr_amode as)),pp_paren_semi]
-pprAbsC stmt@(CCallProfCCMacro op as) _
+pprAbsC (CCallProfCCMacro op as) _
= hcat [ptext op, lparen,
hcat (punctuate comma (map ppr_amode as)),pp_paren_semi]
+pprAbsC stmt@(CCallTypedef is_tdef (CCall op_str is_asm may_gc cconv) results args) _
+ = hsep [ ptext (if is_tdef then SLIT("typedef") else SLIT("extern"))
+ , ccall_res_ty
+ , fun_nm
+ , parens (hsep (punctuate comma ccall_decl_ty_args))
+ ] <> semi
+ where
+ {-
+ In the non-casm case, to ensure that we're entering the given external
+ entry point using the correct calling convention, we have to do the following:
+
+ - When entering via a function pointer (the `dynamic' case) using the specified
+ calling convention, we emit a typedefn declaration attributed with the
+ calling convention to use together with the result and parameter types we're
+ assuming. Coerce the function pointer to this type and go.
+
+ - to enter the function at a given code label, we emit an extern declaration
+ for the label here, stating the calling convention together with result and
+ argument types we're assuming.
+
+ The C compiler will hopefully use this extern declaration to good effect,
+ reporting any discrepancies between our extern decl and any other that
+ may be in scope.
+
+ Re: calling convention, notice that gcc (2.8.1 and egcs-1.0.2) will for
+ the external function `foo' use the calling convention of the first `foo'
+ prototype it encounters (nor does it complain about conflicting attribute
+ declarations). The consequence of this is that you cannot override the
+ calling convention of `foo' using an extern declaration (you'd have to use
+ a typedef), but why you would want to do such a thing in the first place
+ is totally beyond me.
+
+ ToDo: petition the gcc folks to add code to warn about conflicting attribute
+ declarations.
+
+ -}
+
+ fun_nm
+ | is_tdef = parens (text (callConvAttribute cconv) <+> char '*' <> ccall_fun_ty)
+ | otherwise = text (callConvAttribute cconv) <+> ccall_fun_ty
+
+ ccall_fun_ty =
+ case op_str of
+ DynamicTarget u -> ptext SLIT("_ccall_fun_ty") <> ppr u
+ StaticTarget x -> pprCLabelString x
+
+ ccall_res_ty =
+ case non_void_results of
+ [] -> ptext SLIT("void")
+ [amode] -> text (showPrimRep (getAmodeRep amode))
+ _ -> panic "pprAbsC{CCallTypedef}: ccall_res_ty"
+
+ ccall_decl_ty_args
+ | is_tdef = tail ccall_arg_tys
+ | otherwise = ccall_arg_tys
+
+ ccall_arg_tys = map (text.showPrimRep.getAmodeRep) non_void_args
+
+ -- the first argument will be the "I/O world" token (a VoidRep)
+ -- all others should be non-void
+ non_void_args =
+ let nvas = init args
+ in ASSERT (all non_void nvas) nvas
+
+ -- there will usually be two results: a (void) state which we
+ -- should ignore and a (possibly void) result.
+ non_void_results =
+ let nvrs = grab_non_void_amodes results
+ in ASSERT (length nvrs <= 1) nvrs
-pprAbsC (CCodeBlock label abs_C) _
- = ASSERT( maybeToBool(nonemptyAbsC abs_C) )
+pprAbsC (CCodeBlock lbl abs_C) _
+ = if not (maybeToBool(nonemptyAbsC abs_C)) then
+ pprTrace "pprAbsC: curious empty code block for" (pprCLabel lbl) empty
+ else
case (pprTempAndExternDecls abs_C) of { (pp_temps, pp_exts) ->
vcat [
- hcat [text (if (externallyVisibleCLabel label)
+ empty,
+ pp_exts,
+ hcat [text (if (externallyVisibleCLabel lbl)
then "FN_(" -- abbreviations to save on output
else "IFN_("),
- pprCLabel label, text ") {"],
+ pprCLabel lbl, text ") {"],
- pp_exts, pp_temps,
+ pp_temps,
nest 8 (ptext SLIT("FB_")),
nest 8 (pprAbsC abs_C (costs abs_C)),
nest 8 (ptext SLIT("FE_")),
- char '}' ]
+ char '}',
+ char ' ' ]
}
-pprAbsC (CInitHdr cl_info reg_rel cost_centre inplace_upd) _
- = hcat [ pp_init_hdr, text "_HDR(",
- ppr_amode (CAddr reg_rel), comma,
- pprCLabel info_lbl, comma,
- if_profiling (pprAmode cost_centre), comma,
- pprHeapOffset size, comma, int ptr_wds, pp_paren_semi ]
+
+pprAbsC (CInitHdr cl_info amode cost_centre) _
+ = hcat [ ptext SLIT("SET_HDR_"), char '(',
+ ppr_amode amode, comma,
+ pprCLabelAddr info_lbl, comma,
+ if_profiling (pprAmode cost_centre),
+ pp_paren_semi ]
where
info_lbl = infoTableLabelFromCI cl_info
- sm_rep = closureSMRep cl_info
- size = closureSizeWithoutFixedHdr cl_info
- ptr_wds = closurePtrsSize cl_info
-
- pp_init_hdr = text (if inplace_upd then
- getSMUpdInplaceHdrStr sm_rep
- else
- getSMInitHdrStr sm_rep)
pprAbsC stmt@(CStaticClosure closure_lbl cl_info cost_centre amodes) _
= case (pprTempAndExternDecls stmt) of { (_, pp_exts) ->
vcat [
pp_exts,
hcat [
- ptext SLIT("SET_STATIC_HDR"),char '(',
- pprCLabel closure_lbl, comma,
+ ptext SLIT("SET_STATIC_HDR"), char '(',
+ pprCLabel closure_lbl, comma,
pprCLabel info_lbl, comma,
- if_profiling (pprAmode cost_centre), comma,
+ if_profiling (pprAmode cost_centre), comma,
ppLocalness closure_lbl, comma,
- ppLocalnessMacro False{-for data-} info_lbl,
+ ppLocalnessMacro True{-include dyn-} info_lbl,
char ')'
],
- nest 2 (hcat (map ppr_item amodes)),
- nest 2 (hcat (map ppr_item padding_wds)),
+ nest 2 (ppr_payload (amodes ++ padding_wds ++ static_link_field)),
ptext SLIT("};") ]
}
where
info_lbl = infoTableLabelFromCI cl_info
+ ppr_payload [] = empty
+ ppr_payload ls = comma <+>
+ braces (hsep (punctuate comma (map ((text "(L_)" <>).ppr_item) ls)))
+
ppr_item item
- = if getAmodeRep item == VoidRep
- then text ", (W_) 0" -- might not even need this...
- else (<>) (text ", (W_)") (ppr_amode item)
+ | rep == VoidRep = text "0" -- might not even need this...
+ | rep == FloatRep = ppr_amode (floatToWord item)
+ | rep == DoubleRep = hcat (punctuate (text ", (L_)")
+ (map ppr_amode (doubleToWords item)))
+ | otherwise = ppr_amode item
+ where
+ rep = getAmodeRep item
padding_wds =
if not (closureUpdReqd cl_info) then
[]
else
- case (max 0 (mIN_UPD_SIZE - length amodes)) of { still_needed ->
+ case max 0 (mIN_UPD_SIZE - length amodes) of { still_needed ->
nOfThem still_needed (mkIntCLit 0) } -- a bunch of 0s
-{-
- STATIC_INIT_HDR(c,i,localness) blows into:
- localness W_ c_closure [] = { i_info, extra_fixed_wd<1..n>
-
- then *NO VarHdr STUFF FOR STATIC*...
-
- then the amodes are dropped in...
- ,a1 ,a2 ... ,aN
- then a close brace:
- };
--}
+ static_link_field
+ | staticClosureNeedsLink cl_info = [mkIntCLit 0]
+ | otherwise = []
-pprAbsC stmt@(CClosureInfoAndCode cl_info slow maybe_fast upd cl_descr liveness) _
+pprAbsC stmt@(CClosureInfoAndCode cl_info slow maybe_fast cl_descr) _
= vcat [
hcat [
- pp_info_rep,
- ptext SLIT("_ITBL"),char '(',
- pprCLabel info_lbl, comma,
+ ptext SLIT("INFO_TABLE"),
+ ( if is_selector then
+ ptext SLIT("_SELECTOR")
+ else if is_constr then
+ ptext SLIT("_CONSTR")
+ else if needs_srt then
+ ptext SLIT("_SRT")
+ else empty ), char '(',
+
+ pprCLabel info_lbl, comma,
+ pprCLabel slow_lbl, comma,
+ pp_rest, {- ptrs,nptrs,[srt,]type,-} comma,
+
+ ppLocalness info_lbl, comma,
+ ppLocalnessMacro True{-include dyn-} slow_lbl, comma,
- -- CONST_ITBL needs an extra label for
- -- the static version of the object.
- if isConstantRep sm_rep
- then (<>) (pprCLabel (closureLabelFromCI cl_info)) comma
- else empty,
-
- pprCLabel slow_lbl, comma,
- pprAmode upd, comma,
- int liveness, comma,
-
- pp_tag, comma,
- pp_size, comma,
- pp_ptr_wds, comma,
-
- ppLocalness info_lbl, comma,
- ppLocalnessMacro True{-function-} slow_lbl, comma,
-
- if is_selector
- then (<>) (int select_word_i) comma
- else empty,
-
- if_profiling pp_kind, comma,
if_profiling pp_descr, comma,
if_profiling pp_type,
text ");"
- ],
+ ],
pp_slow,
case maybe_fast of
Nothing -> empty
where
info_lbl = infoTableLabelFromCI cl_info
fast_lbl = fastLabelFromCI cl_info
- sm_rep = closureSMRep cl_info
(slow_lbl, pp_slow)
= case (nonemptyAbsC slow) of
maybe_selector = maybeSelectorInfo cl_info
is_selector = maybeToBool maybe_selector
- (Just (_, select_word_i)) = maybe_selector
-
- pp_info_rep -- special stuff if it's a selector; otherwise, just the SMrep
- = text (if is_selector then "SELECT" else (getSMInfoStr sm_rep))
+ (Just select_word_i) = maybe_selector
+
+ maybe_tag = closureSemiTag cl_info
+ is_constr = maybeToBool maybe_tag
+ (Just tag) = maybe_tag
+
+ needs_srt = infoTblNeedsSRT cl_info
+ srt = getSRTInfo cl_info
+
+ size = closureNonHdrSize cl_info
+
+ ptrs = closurePtrsSize cl_info
+ nptrs = size - ptrs
+
+ pp_rest | is_selector = int select_word_i
+ | otherwise = hcat [
+ int ptrs, comma,
+ int nptrs, comma,
+ if is_constr then
+ hcat [ int tag, comma ]
+ else if needs_srt then
+ pp_srt_info srt
+ else empty,
+ type_str ]
+
+ type_str = pprSMRep (closureSMRep cl_info)
+
+ pp_descr = pprStringInCStyle cl_descr
+ pp_type = pprStringInCStyle (closureTypeDescr cl_info)
+
+pprAbsC stmt@(CClosureTbl tycon) _
+ = vcat (
+ ptext SLIT("CLOSURE_TBL") <>
+ lparen <> pprCLabel (mkClosureTblLabel tycon) <> rparen :
+ punctuate comma (
+ map (pp_closure_lbl . mkClosureLabel . getName . dataConWrapId) (tyConDataCons tycon)
+ )
+ ) $$ ptext SLIT("};")
+
+pprAbsC stmt@(CRetDirect uniq code srt liveness) _
+ = vcat [
+ hcat [
+ ptext SLIT("INFO_TABLE_SRT_BITMAP"), lparen,
+ pprCLabel info_lbl, comma,
+ pprCLabel entry_lbl, comma,
+ pp_liveness liveness, comma, -- bitmap
+ pp_srt_info srt, -- SRT
+ ptext type_str, comma, -- closure type
+ ppLocalness info_lbl, comma, -- info table storage class
+ ppLocalnessMacro True{-include dyn-} entry_lbl, comma, -- entry pt storage class
+ int 0, comma,
+ int 0, text ");"
+ ],
+ pp_code
+ ]
+ where
+ info_lbl = mkReturnInfoLabel uniq
+ entry_lbl = mkReturnPtLabel uniq
- pp_tag = int (closureSemiTag cl_info)
+ pp_code = let stuff = CCodeBlock entry_lbl code in
+ pprAbsC stuff (costs stuff)
- is_phantom = isPhantomRep sm_rep
+ type_str = case liveness of
+ LvSmall _ -> SLIT("RET_SMALL")
+ LvLarge _ -> SLIT("RET_BIG")
- pp_size = if isSpecRep sm_rep then -- exploiting: SPEC_VHS == 0 (always)
- int (closureNonHdrSize cl_info)
+pprAbsC stmt@(CRetVector lbl amodes srt liveness) _
+ = case (pprTempAndExternDecls stmt) of { (_, pp_exts) ->
+ vcat [
+ pp_exts,
+ hcat [
+ ptext SLIT("VEC_INFO_") <> int size,
+ lparen,
+ pprCLabel lbl, comma,
+ pp_liveness liveness, comma, -- bitmap liveness mask
+ pp_srt_info srt, -- SRT
+ ptext type_str, comma,
+ ppLocalness lbl, comma
+ ],
+ nest 2 (sep (punctuate comma (map ppr_item amodes))),
+ text ");"
+ ]
+ }
- else if is_phantom then -- do not have sizes for these
- empty
- else
- pprHeapOffset (closureSizeWithoutFixedHdr cl_info)
-
- pp_ptr_wds = if is_phantom then
- empty
- else
- int (closurePtrsSize cl_info)
-
- pp_kind = text (closureKind cl_info)
- pp_descr = hcat [char '"', text (stringToC cl_descr), char '"']
- pp_type = hcat [char '"', text (stringToC (closureTypeDescr cl_info)), char '"']
-
-pprAbsC (CRetVector lbl maybes deflt) c
- = vcat [ ptext SLIT("{ // CRetVector (lbl????)"),
- nest 8 (sep (map ppr_maybe_amode maybes)),
- text "} /*default=*/ {", pprAbsC deflt c,
- char '}']
where
- ppr_maybe_amode Nothing = ptext SLIT("/*default*/")
- ppr_maybe_amode (Just a) = pprAmode a
+ ppr_item item = (<>) (text "(F_) ") (ppr_amode item)
+ size = length amodes
-pprAbsC stmt@(CRetUnVector label amode) _
- = hcat [ptext SLIT("UNVECTBL"),char '(', pp_static, comma, pprCLabel label, comma,
- pprAmode amode, rparen]
- where
- pp_static = if externallyVisibleCLabel label then empty else ptext SLIT("static")
-
-pprAbsC stmt@(CFlatRetVector label amodes) _
- = case (pprTempAndExternDecls stmt) of { (_, pp_exts) ->
- vcat [
- pp_exts,
- hcat [ppLocalness label, ptext SLIT(" W_ "),
- pprCLabel label, text "[] = {"],
- nest 2 (sep (punctuate comma (map ppr_item amodes))),
- text "};" ] }
- where
- ppr_item item = (<>) (text "(W_) ") (ppr_amode item)
+ type_str = case liveness of
+ LvSmall _ -> SLIT("RET_VEC_SMALL")
+ LvLarge _ -> SLIT("RET_VEC_BIG")
-pprAbsC (CCostCentreDecl is_local cc) _ = uppCostCentreDecl is_local cc
+
+pprAbsC stmt@(CModuleInitBlock lbl code) _
+ = vcat [
+ ptext SLIT("START_MOD_INIT") <> parens (pprCLabel lbl),
+ case (pprTempAndExternDecls stmt) of { (_, pp_exts) -> pp_exts },
+ pprAbsC code (costs code),
+ hcat [ptext SLIT("END_MOD_INIT"), lparen, rparen]
+ ]
+
+pprAbsC (CCostCentreDecl is_local cc) _ = pprCostCentreDecl is_local cc
+pprAbsC (CCostCentreStackDecl ccs) _ = pprCostCentreStackDecl ccs
\end{code}
\begin{code}
-ppLocalness label
- = (<>) static const
+ppLocalness lbl
+ = if (externallyVisibleCLabel lbl)
+ then empty
+ else ptext SLIT("static ")
+
+-- Horrible macros for declaring the types and locality of labels (see
+-- StgMacros.h).
+
+ppLocalnessMacro include_dyn_prefix clabel =
+ hcat [
+ visiblity_prefix,
+ dyn_prefix,
+ case label_type of
+ ClosureType -> ptext SLIT("C_")
+ CodeType -> ptext SLIT("F_")
+ InfoTblType -> ptext SLIT("I_")
+ ClosureTblType -> ptext SLIT("CP_")
+ DataType -> ptext SLIT("D_")
+ ]
where
- static = if (externallyVisibleCLabel label) then empty else ptext SLIT("static ")
- const = if not (isReadOnly label) then empty else ptext SLIT("const")
-
-ppLocalnessMacro for_fun{-vs data-} clabel
- = hcat [ char (if externallyVisibleCLabel clabel then 'E' else 'I'),
- if for_fun then
- ptext SLIT("F_")
- else
- (<>) (ptext SLIT("D_"))
- (if isReadOnly clabel then
- ptext SLIT("RO_")
- else
- empty)]
+ is_visible = externallyVisibleCLabel clabel
+ label_type = labelType clabel
+
+ visiblity_prefix
+ | is_visible = char 'E'
+ | otherwise = char 'I'
+
+ dyn_prefix
+ | include_dyn_prefix && labelDynamic clabel = char 'D'
+ | otherwise = empty
+
\end{code}
\begin{code}
(($$) ((<>) (ptext SLIT("CALLER_SAVE_")) pp_reg) more_saves,
($$) ((<>) (ptext SLIT("CALLER_RESTORE_")) pp_reg) more_restores)
--- pp_basic_{saves,restores}: The BaseReg, SpA, SuA, SpB, SuB, Hp and
+-- pp_basic_{saves,restores}: The BaseReg, Sp, Su, Hp and
-- HpLim (see StgRegs.lh) may need to be saved/restored around CCalls,
-- depending on the platform. (The "volatile regs" stuff handles all
-- other registers.) Just be *sure* BaseReg is OK before trying to do
--- anything else.
-pp_basic_saves
- = vcat [
- ptext SLIT("CALLER_SAVE_Base"),
- ptext SLIT("CALLER_SAVE_SpA"),
- ptext SLIT("CALLER_SAVE_SuA"),
- ptext SLIT("CALLER_SAVE_SpB"),
- ptext SLIT("CALLER_SAVE_SuB"),
- ptext SLIT("CALLER_SAVE_Ret"),
--- ptext SLIT("CALLER_SAVE_Activity"),
- ptext SLIT("CALLER_SAVE_Hp"),
- ptext SLIT("CALLER_SAVE_HpLim") ]
-
-pp_basic_restores
- = vcat [
- ptext SLIT("CALLER_RESTORE_Base"), -- must be first!
- ptext SLIT("CALLER_RESTORE_SpA"),
- ptext SLIT("CALLER_RESTORE_SuA"),
- ptext SLIT("CALLER_RESTORE_SpB"),
- ptext SLIT("CALLER_RESTORE_SuB"),
- ptext SLIT("CALLER_RESTORE_Ret"),
--- ptext SLIT("CALLER_RESTORE_Activity"),
- ptext SLIT("CALLER_RESTORE_Hp"),
- ptext SLIT("CALLER_RESTORE_HpLim"),
- ptext SLIT("CALLER_RESTORE_StdUpdRetVec"),
- ptext SLIT("CALLER_RESTORE_StkStub") ]
+-- anything else. The correct sequence of saves&restores are
+-- encoded by the CALLER_*_SYSTEM macros.
+pp_basic_saves = ptext SLIT("CALLER_SAVE_SYSTEM")
+pp_basic_restores = ptext SLIT("CALLER_RESTORE_SYSTEM")
+\end{code}
+
+\begin{code}
+has_srt (_, NoSRT) = False
+has_srt _ = True
+
+pp_srt_info srt =
+ case srt of
+ (lbl, NoSRT) ->
+ hcat [ int 0, comma,
+ int 0, comma,
+ int 0, comma ]
+ (lbl, SRT off len) ->
+ hcat [ pprCLabel lbl, comma,
+ int off, comma,
+ int len, comma ]
+\end{code}
+
+\begin{code}
+pp_closure_lbl lbl
+ | labelDynamic lbl = text "DLL_SRT_ENTRY" <> parens (pprCLabel lbl)
+ | otherwise = char '&' <> pprCLabel lbl
\end{code}
\begin{code}
= if opt_SccProfilingOn
then pretty
else char '0' -- leave it out!
-
-- ---------------------------------------------------------------------------
-- Changes for GrAnSim:
-- draw costs for computation in head of if into both branches;
= case tag of
-- This special case happens when testing the result of a comparison.
-- We can just avoid some redundant clutter in the output.
- MachInt n _ | n==0 -> ppr_if_stmt (pprAmode discrim)
+ MachInt n | n==0 -> ppr_if_stmt (pprAmode discrim)
deflt alt_code
(addrModeCosts discrim Rhs) c
- other -> let
- cond = hcat [ pprAmode discrim,
- ptext SLIT(" == "),
- pprAmode (CLit tag) ]
+ other -> let
+ cond = hcat [ pprAmode discrim
+ , ptext SLIT(" == ")
+ , tcast
+ , pprAmode (CLit tag)
+ ]
+ -- to be absolutely sure that none of the
+ -- conversion rules hit, e.g.,
+ --
+ -- minInt is different to (int)minInt
+ --
+ -- in C (when minInt is a number not a constant
+ -- expression which evaluates to it.)
+ --
+ tcast = case other of
+ MachInt _ -> ptext SLIT("(I_)")
+ _ -> empty
in
ppr_if_stmt cond
alt_code deflt
be restarted during the call.
3) Save any temporary registers that are currently in use.
-4) Do the call putting result into a local variable
+4) Do the call, putting result into a local variable
5) Restore essential registers
6) Restore temporaries
(This happens after restoration of essential registers because we
might need the @Base@ register to access all the others correctly.)
-{- Doesn't apply anymore with ForeignObj, structure create via primop.
- makeForeignObj (ForeignObj is not CReturnable)
-7) If returning Malloc Pointer, build a closure containing the
- appropriate value.
--}
Otherwise, copy local variable into result register.
8) If ccall (not casm), declare the function being called as extern so
can get at them.
* be sure that there are no live registers or we're in trouble.
(This can cause problems if you try something foolish like passing
- an array or foreign obj to a _ccall_GC_ thing.)
+ an array or a foreign obj to a _ccall_GC_ thing.)
* increment/decrement the @inCCallGC@ counter before/after the call so
that the runtime check that PerformGC is being used sensibly will work.
\begin{code}
-pprCCall op@(CCallOp op_str is_asm may_gc _ _) args results liveness_mask vol_regs
- = if (may_gc && liveness_mask /= noLiveRegsMask)
- then pprPanic "Live register in _casm_GC_ "
- (doubleQuotes (text casm_str) <+> hsep pp_non_void_args)
- else
- vcat [
+pprCCall call@(CCall op_str is_asm may_gc cconv) args results vol_regs
+ = vcat [
char '{',
declare_local_vars, -- local var for *result*
vcat local_arg_decls,
- -- if is_asm then empty else declareExtern,
pp_save_context,
- process_casm local_vars pp_non_void_args casm_str,
+ process_casm local_vars pp_non_void_args casm_str,
pp_restore_context,
assign_results,
char '}'
]
where
(pp_saves, pp_restores) = ppr_vol_regs vol_regs
- (pp_save_context, pp_restore_context) =
- if may_gc
- then ( text "do { extern StgInt inCCallGC; SaveAllStgRegs(); inCCallGC++;",
- text "inCCallGC--; RestoreAllStgRegs();} while(0);")
- else ( pp_basic_saves $$ pp_saves,
- pp_basic_restores $$ pp_restores)
-
- non_void_args =
- let nvas = tail args
- in ASSERT (all non_void nvas) nvas
- -- the first argument will be the "I/O world" token (a VoidRep)
+ (pp_save_context, pp_restore_context)
+ | may_gc = ( text "{ I_ id; SUSPEND_THREAD(id);"
+ , text "RESUME_THREAD(id);}"
+ )
+ | otherwise = ( pp_basic_saves $$ pp_saves,
+ pp_basic_restores $$ pp_restores)
+
+ non_void_args =
+ let nvas = init args
+ in ASSERT2 ( all non_void nvas, pprCCallOp call <+> hsep (map pprAmode args) )
+ nvas
+ -- the last argument will be the "I/O world" token (a VoidRep)
-- all others should be non-void
non_void_results =
(local_arg_decls, pp_non_void_args)
= unzip [ ppr_casm_arg a i | (a,i) <- non_void_args `zip` [1..] ]
- pp_liveness = pprAmode (mkIntCLit liveness_mask)
-
(declare_local_vars, local_vars, assign_results)
- = ppr_casm_results non_void_results pp_liveness
+ = ppr_casm_results non_void_results
- casm_str = if is_asm then _UNPK_ op_str else ccall_str
+ casm_str = if is_asm then _UNPK_ asm_str else ccall_str
+ StaticTarget asm_str = op_str -- Must be static if it's a casm
-- Remainder only used for ccall
+ fun_name = case op_str of
+ DynamicTarget u -> parens (parens (ptext SLIT("_ccall_fun_ty") <> ppr u) <> text "%0")
+ StaticTarget st -> pprCLabelString st
+
ccall_str = showSDoc
(hcat [
if null non_void_results
then empty
else text "%r = ",
- lparen, ptext op_str, lparen,
- hcat (punctuate comma ccall_args),
+ lparen, fun_name, lparen,
+ hcat (punctuate comma ccall_fun_args),
text "));"
])
- num_args = length non_void_args
- ccall_args = take num_args [ (<>) (char '%') (int i) | i <- [0..] ]
+
+ ccall_fun_args | isDynamicTarget op_str = tail ccall_args
+ | otherwise = ccall_args
+
+ ccall_args = zipWith (\ _ i -> char '%' <> int i) non_void_args [0..]
+
\end{code}
If the argument is a heap object, we need to reach inside and pull out
the bit the C world wants to see. The only heap objects which can be
-passed are @Array@s, @ByteArray@s and @ForeignObj@s.
+passed are @Array@s and @ByteArray@s.
\begin{code}
ppr_casm_arg :: CAddrMode -> Int -> (SDoc, SDoc)
hcat [ptext SLIT("BYTE_ARR_CTS"),char '(', pp_amode, rparen])
-- for ForeignObj, use FOREIGN_OBJ_DATA to fish out the contents.
- ForeignObjRep -> (ptext SLIT("StgForeignObj"),
- hcat [ptext SLIT("ForeignObj_CLOSURE_DATA"),char '(',
- pp_amode, char ')'])
+ ForeignObjRep -> (pp_kind,
+ hcat [ptext SLIT("ForeignObj_CLOSURE_DATA"),
+ char '(', pp_amode, char ')'])
+
other -> (pp_kind, pp_amode)
declare_local_var
We only allow zero or one results.
-{- With the introduction of ForeignObj (MallocPtr++), no longer necess.
-2) Is the result is a foreign obj?
-
- The mallocptr must be encapsulated immediately in a heap object.
--}
\begin{code}
ppr_casm_results
:: [CAddrMode] -- list of results (length <= 1)
- -> SDoc -- liveness mask
->
( SDoc, -- declaration of any local vars
[SDoc], -- list of result vars (same length as results)
SDoc ) -- assignment (if any) of results in local var to registers
-ppr_casm_results [] liveness
+ppr_casm_results []
= (empty, [], empty) -- no results
-ppr_casm_results [r] liveness
+ppr_casm_results [r]
= let
result_reg = ppr_amode r
r_kind = getAmodeRep r
local_var = ptext SLIT("_ccall_result")
(result_type, assign_result)
- = case r_kind of
-{-
- @ForeignObj@s replaces MallocPtrs and are *not* CReturnable.
- Instead, external references have to explicitly turned into ForeignObjs
- using the primop makeForeignObj#. Benefit: Multiple finalisation
- routines can be accommodated and the below special case is not needed.
- Price is, of course, that you have to explicitly wrap `foreign objects'
- with makeForeignObj#.
-
- ForeignObjRep ->
- (ptext SLIT("StgForeignObj"),
- hcat [ ptext SLIT("constructForeignObj"),char '(',
- liveness, comma,
- result_reg, comma,
- local_var,
- pp_paren_semi ])
--}
- _ ->
- (pprPrimKind r_kind,
- hcat [ result_reg, equals, local_var, semi ])
+ = (pprPrimKind r_kind,
+ hcat [ result_reg, equals, local_var, semi ])
declare_local_var = hcat [ result_type, space, local_var, semi ]
in
(declare_local_var, [local_var], assign_result)
-ppr_casm_results rs liveness
+ppr_casm_results rs
= panic "ppr_casm_results: ccall/casm with many results"
\end{code}
Or maybe we should do a check _much earlier_ in compiler. ADR
\begin{code}
-process_casm ::
- [SDoc] -- results (length <= 1)
- -> [SDoc] -- arguments
- -> String -- format string (with embedded %'s)
- ->
- SDoc -- code being generated
+process_casm :: [SDoc] -- results (length <= 1)
+ -> [SDoc] -- arguments
+ -> String -- format string (with embedded %'s)
+ -> SDoc -- code being generated
process_casm results args string = process results args string
where
process [] _ "" = empty
- process (_:_) _ "" = error ("process_casm: non-void result not assigned while processing _casm_ \"" ++ string ++ "\"\n(Try changing result type to PrimIO ()\n")
+ process (_:_) _ "" = error ("process_casm: non-void result not assigned while processing _casm_ \"" ++
+ string ++
+ "\"\n(Try changing result type to IO ()\n")
process ress args ('%':cs)
= case cs of
error ("process_casm: lonely % while processing _casm_ \"" ++ string ++ "\".\n")
('%':css) ->
- (<>) (char '%') (process ress args css)
+ char '%' <> process ress args css
('r':css) ->
case ress of
[] -> error ("process_casm: no result to match %r while processing _casm_ \"" ++ string ++ "\".\nTry deleting %r or changing result type from PrimIO ()\n")
- [r] -> (<>) r (process [] args css)
+ [r] -> r <> (process [] args css)
_ -> panic ("process_casm: casm with many results while processing _casm_ \"" ++ string ++ "\".\n")
other ->
case (read_int other) of
[(num,css)] ->
if 0 <= num && num < length args
- then (<>) (parens (args !! num))
- (process ress args css)
- else error ("process_casm: no such arg #:"++(show num)++" while processing \"" ++ string ++ "\".\n")
+ then parens (args !! num) <> process ress args css
+ else error ("process_casm: no such arg #:"++(show num)++" while processing \"" ++ string ++ "\".\n")
_ -> error ("process_casm: not %<num> while processing _casm_ \"" ++ string ++ "\".\n")
process ress args (other_c:cs)
- = (<>) (char other_c) (process ress args cs)
+ = char other_c <> process ress args cs
\end{code}
%************************************************************************
pprAssign DoubleRep dest@(CVal reg_rel _) src
= hcat [ ptext SLIT("ASSIGN_DBL"),char '(', ppr_amode (CAddr reg_rel), comma, pprAmode src, pp_paren_semi ]
+
+pprAssign Int64Rep dest@(CVal reg_rel _) src
+ = hcat [ ptext SLIT("ASSIGN_Int64"),char '(', ppr_amode (CAddr reg_rel), comma, pprAmode src, pp_paren_semi ]
+pprAssign Word64Rep dest@(CVal reg_rel _) src
+ = hcat [ ptext SLIT("ASSIGN_Word64"),char '(', ppr_amode (CAddr reg_rel), comma, pprAmode src, pp_paren_semi ]
\end{code}
Lastly, the question is: will the C compiler think the types of the
two sides of the assignment match?
- We assume that the types will match
- if neither side is a @CVal@ addressing mode for any register
- which can point into the heap or B stack.
+ We assume that the types will match if neither side is a
+ @CVal@ addressing mode for any register which can point into
+ the heap or stack.
-Why? Because the heap and B stack are used to store miscellaneous things,
-whereas the A stack, temporaries, registers, etc., are only used for things
-of fixed type.
+Why? Because the heap and stack are used to store miscellaneous
+things, whereas the temporaries, registers, etc., are only used for
+things of fixed type.
\begin{code}
pprAssign kind (CReg (VanillaReg _ dest)) (CReg (VanillaReg _ src))
pprAssign ByteArrayRep dest src
| mixedPtrLocn src
- -- Add in a cast to StgPtr (a.k.a. B_) iff the source is mixed
+ -- Add in a cast iff the source is mixed
= hcat [ ppr_amode dest, equals,
- text "(B_)(", -- Here is the cast
+ text "(StgByteArray)(", -- Here is the cast
ppr_amode src, pp_paren_semi ]
pprAssign kind other_dest src
= hcat [ text "PK_FLT(", ppr_amode (CAddr reg_rel), rparen ]
pprAmode (CVal reg_rel DoubleRep)
= hcat [ text "PK_DBL(", ppr_amode (CAddr reg_rel), rparen ]
+pprAmode (CVal reg_rel Int64Rep)
+ = hcat [ text "PK_Int64(", ppr_amode (CAddr reg_rel), rparen ]
+pprAmode (CVal reg_rel Word64Rep)
+ = hcat [ text "PK_Word64(", ppr_amode (CAddr reg_rel), rparen ]
\end{code}
Next comes the case where there is some other cast need, and the
= ppr_amode amode
\end{code}
+When we have an indirection through a CIndex, we have to be careful to
+get the type casts right.
+
+this amode:
+
+ CVal (CIndex kind1 base offset) kind2
+
+means (in C speak):
+
+ *(kind2 *)((kind1 *)base + offset)
+
+That is, the indexing is done in units of kind1, but the resulting
+amode has kind2.
+
+\begin{code}
+ppr_amode (CVal reg_rel@(CIndex _ _ _) kind)
+ = case (pprRegRelative False{-no sign wanted-} reg_rel) of
+ (pp_reg, Nothing) -> panic "ppr_amode: CIndex"
+ (pp_reg, Just offset) ->
+ hcat [ char '*', parens (pprPrimKind kind <> char '*'),
+ parens (pp_reg <> char '+' <> offset) ]
+\end{code}
+
Now the rest of the cases for ``workhorse'' @ppr_amode@:
\begin{code}
ppr_amode (CReg magic_id) = pprMagicId magic_id
-ppr_amode (CTemp uniq kind) = pprUnique uniq <> char '_'
+ppr_amode (CTemp uniq kind) = char '_' <> pprUnique uniq <> char '_'
-ppr_amode (CLbl label kind) = pprCLabel label
-
-ppr_amode (CUnVecLbl direct vectored)
- = hcat [char '(',ptext SLIT("StgRetAddr"),char ')', ptext SLIT("UNVEC"),char '(', pprCLabel direct, comma,
- pprCLabel vectored, rparen]
+ppr_amode (CLbl lbl kind) = pprCLabelAddr lbl
ppr_amode (CCharLike ch)
= hcat [ptext SLIT("CHARLIKE_CLOSURE"), char '(', pprAmode ch, rparen ]
ppr_amode (CIntLike int)
= hcat [ptext SLIT("INTLIKE_CLOSURE"), char '(', pprAmode int, rparen ]
-ppr_amode (CString str) = hcat [char '"', text (stringToC (_UNPK_ str)), char '"']
- -- ToDo: are these *used* for anything?
-
ppr_amode (CLit lit) = pprBasicLit lit
-ppr_amode (CLitLit str _) = ptext str
-
-ppr_amode (COffset off) = pprHeapOffset off
-
-ppr_amode (CCode abs_C)
- = vcat [ ptext SLIT("{ -- CCode"), nest 8 (pprAbsC abs_C (costs abs_C)), char '}' ]
-
-ppr_amode (CLabelledCode label abs_C)
- = vcat [ hcat [pprCLabel label, ptext SLIT(" = { -- CLabelledCode")],
- nest 8 (pprAbsC abs_C (costs abs_C)), char '}' ]
-
-ppr_amode (CJoinPoint _ _)
+ppr_amode (CJoinPoint _)
= panic "ppr_amode: CJoinPoint"
-ppr_amode (CTableEntry base index kind)
- = hcat [text "((", pprPrimKind kind, text " *)(",
- ppr_amode base, text "))[(I_)(", ppr_amode index,
- ptext SLIT(")]")]
-
ppr_amode (CMacroExpr pk macro as)
- = hcat [lparen, pprPrimKind pk, text ")(", text (show macro), lparen,
- hcat (punctuate comma (map pprAmode as)), text "))"]
+ = parens (ptext (cExprMacroText macro) <>
+ parens (hcat (punctuate comma (map pprAmode as))))
+\end{code}
-ppr_amode (CCostCentre cc print_as_string)
- = uppCostCentre print_as_string cc
+\begin{code}
+cExprMacroText ENTRY_CODE = SLIT("ENTRY_CODE")
+cExprMacroText ARG_TAG = SLIT("ARG_TAG")
+cExprMacroText GET_TAG = SLIT("GET_TAG")
+cExprMacroText UPD_FRAME_UPDATEE = SLIT("UPD_FRAME_UPDATEE")
+cExprMacroText CCS_HDR = SLIT("CCS_HDR")
+
+cStmtMacroText ARGS_CHK = SLIT("ARGS_CHK")
+cStmtMacroText ARGS_CHK_LOAD_NODE = SLIT("ARGS_CHK_LOAD_NODE")
+cStmtMacroText UPD_CAF = SLIT("UPD_CAF")
+cStmtMacroText UPD_BH_UPDATABLE = SLIT("UPD_BH_UPDATABLE")
+cStmtMacroText UPD_BH_SINGLE_ENTRY = SLIT("UPD_BH_SINGLE_ENTRY")
+cStmtMacroText PUSH_UPD_FRAME = SLIT("PUSH_UPD_FRAME")
+cStmtMacroText PUSH_SEQ_FRAME = SLIT("PUSH_SEQ_FRAME")
+cStmtMacroText UPDATE_SU_FROM_UPD_FRAME = SLIT("UPDATE_SU_FROM_UPD_FRAME")
+cStmtMacroText SET_TAG = SLIT("SET_TAG")
+cStmtMacroText REGISTER_FOREIGN_EXPORT = SLIT("REGISTER_FOREIGN_EXPORT")
+cStmtMacroText REGISTER_IMPORT = SLIT("REGISTER_IMPORT")
+cStmtMacroText REGISTER_DIMPORT = SLIT("REGISTER_DIMPORT")
+cStmtMacroText GRAN_FETCH = SLIT("GRAN_FETCH")
+cStmtMacroText GRAN_RESCHEDULE = SLIT("GRAN_RESCHEDULE")
+cStmtMacroText GRAN_FETCH_AND_RESCHEDULE= SLIT("GRAN_FETCH_AND_RESCHEDULE")
+cStmtMacroText THREAD_CONTEXT_SWITCH = SLIT("THREAD_CONTEXT_SWITCH")
+cStmtMacroText GRAN_YIELD = SLIT("GRAN_YIELD")
+
+cCheckMacroText HP_CHK_NP = SLIT("HP_CHK_NP")
+cCheckMacroText STK_CHK_NP = SLIT("STK_CHK_NP")
+cCheckMacroText HP_STK_CHK_NP = SLIT("HP_STK_CHK_NP")
+cCheckMacroText HP_CHK_SEQ_NP = SLIT("HP_CHK_SEQ_NP")
+cCheckMacroText HP_CHK = SLIT("HP_CHK")
+cCheckMacroText STK_CHK = SLIT("STK_CHK")
+cCheckMacroText HP_STK_CHK = SLIT("HP_STK_CHK")
+cCheckMacroText HP_CHK_NOREGS = SLIT("HP_CHK_NOREGS")
+cCheckMacroText HP_CHK_UNPT_R1 = SLIT("HP_CHK_UNPT_R1")
+cCheckMacroText HP_CHK_UNBX_R1 = SLIT("HP_CHK_UNBX_R1")
+cCheckMacroText HP_CHK_F1 = SLIT("HP_CHK_F1")
+cCheckMacroText HP_CHK_D1 = SLIT("HP_CHK_D1")
+cCheckMacroText HP_CHK_L1 = SLIT("HP_CHK_L1")
+cCheckMacroText HP_CHK_UT_ALT = SLIT("HP_CHK_UT_ALT")
+cCheckMacroText HP_CHK_GEN = SLIT("HP_CHK_GEN")
+\end{code}
+
+%************************************************************************
+%* *
+\subsection[ppr-liveness-masks]{Liveness Masks}
+%* *
+%************************************************************************
+
+\begin{code}
+pp_liveness :: Liveness -> SDoc
+pp_liveness lv =
+ case lv of
+ LvLarge lbl -> char '&' <> pprCLabel lbl
+ LvSmall mask -- Avoid gcc bug when printing minInt
+ | bitmap_int == minInt -> int (bitmap_int+1) <> text "-1"
+ | otherwise -> int bitmap_int
+ where
+ bitmap_int = intBS mask
\end{code}
%************************************************************************
-> RegRelative
-> (SDoc, Maybe SDoc)
-pprRegRelative sign_wanted (SpARel spA off)
- = (pprMagicId SpA, pprSignedInt sign_wanted (spARelToInt spA off))
-
-pprRegRelative sign_wanted (SpBRel spB off)
- = (pprMagicId SpB, pprSignedInt sign_wanted (spBRelToInt spB off))
+pprRegRelative sign_wanted (SpRel off)
+ = (pprMagicId Sp, pprSignedInt sign_wanted (I# off))
-pprRegRelative sign_wanted r@(HpRel hp off)
- = let to_print = hp `subOff` off
- pp_Hp = pprMagicId Hp
+pprRegRelative sign_wanted r@(HpRel o)
+ = let pp_Hp = pprMagicId Hp; off = I# o
in
- if isZeroOff to_print then
+ if off == 0 then
(pp_Hp, Nothing)
else
- (pp_Hp, Just ((<>) (char '-') (pprHeapOffset to_print)))
- -- No parens needed because pprHeapOffset
- -- does them when necessary
+ (pp_Hp, Just ((<>) (char '-') (int off)))
-pprRegRelative sign_wanted (NodeRel off)
- = let pp_Node = pprMagicId node
+pprRegRelative sign_wanted (NodeRel o)
+ = let pp_Node = pprMagicId node; off = I# o
in
- if isZeroOff off then
+ if off == 0 then
(pp_Node, Nothing)
else
- (pp_Node, Just (addPlusSign sign_wanted (pprHeapOffset off)))
+ (pp_Node, Just (addPlusSign sign_wanted (int off)))
+pprRegRelative sign_wanted (CIndex base offset kind)
+ = ( hcat [text "((", pprPrimKind kind, text " *)(", ppr_amode base, text "))"]
+ , Just (hcat [if sign_wanted then char '+' else empty,
+ text "(I_)(", ppr_amode offset, ptext SLIT(")")])
+ )
\end{code}
@pprMagicId@ just prints the register name. @VanillaReg@ registers are
pprMagicId :: MagicId -> SDoc
pprMagicId BaseReg = ptext SLIT("BaseReg")
-pprMagicId StkOReg = ptext SLIT("StkOReg")
pprMagicId (VanillaReg pk n)
= hcat [ pprVanillaReg n, char '.',
pprUnionTag pk ]
-pprMagicId (FloatReg n) = (<>) (ptext SLIT("FltReg")) (int IBOX(n))
-pprMagicId (DoubleReg n) = (<>) (ptext SLIT("DblReg")) (int IBOX(n))
-pprMagicId TagReg = ptext SLIT("TagReg")
-pprMagicId RetReg = ptext SLIT("RetReg")
-pprMagicId SpA = ptext SLIT("SpA")
-pprMagicId SuA = ptext SLIT("SuA")
-pprMagicId SpB = ptext SLIT("SpB")
-pprMagicId SuB = ptext SLIT("SuB")
-pprMagicId Hp = ptext SLIT("Hp")
+pprMagicId (FloatReg n) = (<>) (ptext SLIT("F")) (int IBOX(n))
+pprMagicId (DoubleReg n) = (<>) (ptext SLIT("D")) (int IBOX(n))
+pprMagicId (LongReg _ n) = (<>) (ptext SLIT("L")) (int IBOX(n))
+pprMagicId Sp = ptext SLIT("Sp")
+pprMagicId Su = ptext SLIT("Su")
+pprMagicId SpLim = ptext SLIT("SpLim")
+pprMagicId Hp = ptext SLIT("Hp")
pprMagicId HpLim = ptext SLIT("HpLim")
-pprMagicId LivenessReg = ptext SLIT("LivenessReg")
-pprMagicId StdUpdRetVecReg = ptext SLIT("StdUpdRetVecReg")
-pprMagicId StkStubReg = ptext SLIT("StkStubReg")
-pprMagicId CurCostCentre = ptext SLIT("CCC")
+pprMagicId CurCostCentre = ptext SLIT("CCCS")
pprMagicId VoidReg = panic "pprMagicId:VoidReg!"
-pprVanillaReg :: FAST_INT -> SDoc
-
+pprVanillaReg :: FastInt -> SDoc
pprVanillaReg n = (<>) (char 'R') (int IBOX(n))
pprUnionTag :: PrimRep -> SDoc
pprUnionTag PtrRep = char 'p'
pprUnionTag CodePtrRep = ptext SLIT("fp")
pprUnionTag DataPtrRep = char 'd'
-pprUnionTag RetRep = char 'r'
+pprUnionTag RetRep = char 'p'
pprUnionTag CostCentreRep = panic "pprUnionTag:CostCentre?"
pprUnionTag CharRep = char 'c'
+pprUnionTag Int8Rep = ptext SLIT("i8")
pprUnionTag IntRep = char 'i'
pprUnionTag WordRep = char 'w'
-pprUnionTag AddrRep = char 'v'
+pprUnionTag AddrRep = char 'a'
pprUnionTag FloatRep = char 'f'
pprUnionTag DoubleRep = panic "pprUnionTag:Double?"
-pprUnionTag StablePtrRep = char 'i'
+pprUnionTag StablePtrRep = char 'p'
+pprUnionTag StableNameRep = char 'p'
+pprUnionTag WeakPtrRep = char 'p'
pprUnionTag ForeignObjRep = char 'p'
+pprUnionTag PrimPtrRep = char 'p'
+
+pprUnionTag ThreadIdRep = char 't'
pprUnionTag ArrayRep = char 'p'
pprUnionTag ByteArrayRep = char 'b'
+pprUnionTag BCORep = char 'p'
pprUnionTag _ = panic "pprUnionTag:Odd kind"
\end{code}
emptyCLabelSet = emptyFM
x `elementOfCLabelSet` labs
= case (lookupFM labs x) of { Just _ -> True; Nothing -> False }
+
addToCLabelSet set x = addToFM set x ()
type TEenv = (UniqSet Unique, CLabelSet)
False)
labelSeenTE :: CLabel -> TeM Bool
-labelSeenTE label env@(seen_uniqs, seen_labels)
- = if (label `elementOfCLabelSet` seen_labels)
+labelSeenTE lbl env@(seen_uniqs, seen_labels)
+ = if (lbl `elementOfCLabelSet` seen_labels)
then (env, True)
else ((seen_uniqs,
- addToCLabelSet seen_labels label),
+ addToCLabelSet seen_labels lbl),
False)
\end{code}
\begin{code}
pprTempDecl :: Unique -> PrimRep -> SDoc
pprTempDecl uniq kind
- = hcat [ pprPrimKind kind, space, pprUnique uniq, ptext SLIT("_;") ]
-
-pprExternDecl :: CLabel -> PrimRep -> SDoc
-
-pprExternDecl clabel kind
- = if not (needsCDecl clabel) then
- empty -- do not print anything for "known external" things (e.g., < PreludeCore)
- else
- case (
- case kind of
- CodePtrRep -> ppLocalnessMacro True{-function-} clabel
- _ -> ppLocalnessMacro False{-data-} clabel
- ) of { pp_macro_str ->
+ = hcat [ pprPrimKind kind, space, char '_', pprUnique uniq, ptext SLIT("_;") ]
+
+pprExternDecl :: Bool -> CLabel -> SDoc
+pprExternDecl in_srt clabel
+ | not (needsCDecl clabel) = empty -- do not print anything for "known external" things
+ | otherwise =
+ hcat [ ppLocalnessMacro (not in_srt) clabel,
+ lparen, dyn_wrapper (pprCLabel clabel), pp_paren_semi ]
+ where
+ dyn_wrapper d
+ | in_srt && labelDynamic clabel = text "DLL_IMPORT_DATA_VAR" <> parens d
+ | otherwise = d
- hcat [ pp_macro_str, lparen, pprCLabel clabel, pp_paren_semi ]
- }
\end{code}
\begin{code}
ppr_decls_AbsC stmts_2 `thenTE` \ p2 ->
returnTE (maybe_vcat [p1, p2])
-ppr_decls_AbsC (CClosureUpdInfo info)
- = ppr_decls_AbsC info
-
ppr_decls_AbsC (CSplitMarker) = returnTE (Nothing, Nothing)
ppr_decls_AbsC (CAssign dest source)
where
ppr_alt_stuff (_, absC) = ppr_decls_AbsC absC
-ppr_decls_AbsC (CCodeBlock label absC)
+ppr_decls_AbsC (CCodeBlock lbl absC)
= ppr_decls_AbsC absC
-ppr_decls_AbsC (CInitHdr cl_info reg_rel cost_centre inplace_upd)
+ppr_decls_AbsC (CInitHdr cl_info reg_rel cost_centre)
-- ToDo: strictly speaking, should chk "cost_centre" amode
= labelSeenTE info_lbl `thenTE` \ label_seen ->
returnTE (Nothing,
if label_seen then
Nothing
else
- Just (pprExternDecl info_lbl PtrRep))
+ Just (pprExternDecl False{-not in an SRT decl-} info_lbl))
where
info_lbl = infoTableLabelFromCI cl_info
-ppr_decls_AbsC (COpStmt results _ args _ _) = ppr_decls_Amodes (results ++ args)
+ppr_decls_AbsC (COpStmt results _ args _) = ppr_decls_Amodes (results ++ args)
ppr_decls_AbsC (CSimultaneous abc) = ppr_decls_AbsC abc
+ppr_decls_AbsC (CCheck _ amodes code) =
+ ppr_decls_Amodes amodes `thenTE` \p1 ->
+ ppr_decls_AbsC code `thenTE` \p2 ->
+ returnTE (maybe_vcat [p1,p2])
+
ppr_decls_AbsC (CMacroStmt _ amodes) = ppr_decls_Amodes amodes
ppr_decls_AbsC (CCallProfCtrMacro _ amodes) = ppr_decls_Amodes [] -- *****!!!
-- ToDo: strictly speaking, should chk "cost_centre" amode
= ppr_decls_Amodes amodes
-ppr_decls_AbsC (CClosureInfoAndCode cl_info slow maybe_fast upd_lbl _ _)
- = ppr_decls_Amodes [entry_lbl, upd_lbl] `thenTE` \ p1 ->
+ppr_decls_AbsC (CClosureInfoAndCode cl_info slow maybe_fast _)
+ = ppr_decls_Amodes [entry_lbl] `thenTE` \ p1 ->
ppr_decls_AbsC slow `thenTE` \ p2 ->
(case maybe_fast of
Nothing -> returnTE (Nothing, Nothing)
Nothing -> mkErrorStdEntryLabel
Just _ -> entryLabelFromCI cl_info
-ppr_decls_AbsC (CRetVector label maybe_amodes absC)
- = ppr_decls_Amodes (catMaybes maybe_amodes) `thenTE` \ p1 ->
- ppr_decls_AbsC absC `thenTE` \ p2 ->
- returnTE (maybe_vcat [p1, p2])
+ppr_decls_AbsC (CSRT _ closure_lbls)
+ = mapTE labelSeenTE closure_lbls `thenTE` \ seen ->
+ returnTE (Nothing,
+ if and seen then Nothing
+ else Just (vcat [ pprExternDecl True{-in SRT decl-} l
+ | (l,False) <- zip closure_lbls seen ]))
+
+ppr_decls_AbsC (CRetDirect _ code _ _) = ppr_decls_AbsC code
+ppr_decls_AbsC (CRetVector _ amodes _ _) = ppr_decls_Amodes amodes
+ppr_decls_AbsC (CModuleInitBlock _ code) = ppr_decls_AbsC code
-ppr_decls_AbsC (CRetUnVector _ amode) = ppr_decls_Amode amode
-ppr_decls_AbsC (CFlatRetVector _ amodes) = ppr_decls_Amodes amodes
+ppr_decls_AbsC (_) = returnTE (Nothing, Nothing)
\end{code}
\begin{code}
ppr_decls_Amode :: CAddrMode -> TeM (Maybe SDoc, Maybe SDoc)
+ppr_decls_Amode (CVal (CIndex base offset _) _) = ppr_decls_Amodes [base,offset]
+ppr_decls_Amode (CAddr (CIndex base offset _)) = ppr_decls_Amodes [base,offset]
ppr_decls_Amode (CVal _ _) = returnTE (Nothing, Nothing)
ppr_decls_Amode (CAddr _) = returnTE (Nothing, Nothing)
ppr_decls_Amode (CReg _) = returnTE (Nothing, Nothing)
-ppr_decls_Amode (CString _) = returnTE (Nothing, Nothing)
ppr_decls_Amode (CLit _) = returnTE (Nothing, Nothing)
-ppr_decls_Amode (CLitLit _ _) = returnTE (Nothing, Nothing)
-ppr_decls_Amode (COffset _) = returnTE (Nothing, Nothing)
-- CIntLike must be a literal -- no decls
ppr_decls_Amode (CIntLike int) = returnTE (Nothing, Nothing)
--- CCharLike may have be arbitrary value -- may have decls
-ppr_decls_Amode (CCharLike char)
- = ppr_decls_Amode char
+-- CCharLike too
+ppr_decls_Amode (CCharLike char) = returnTE (Nothing, Nothing)
-- now, the only place where we actually print temps/externs...
ppr_decls_Amode (CTemp uniq kind)
returnTE
(if temp_seen then Nothing else Just (pprTempDecl uniq kind), Nothing)
-ppr_decls_Amode (CLbl label VoidRep)
+ppr_decls_Amode (CLbl lbl VoidRep)
= returnTE (Nothing, Nothing)
-ppr_decls_Amode (CLbl label kind)
- = labelSeenTE label `thenTE` \ label_seen ->
+ppr_decls_Amode (CLbl lbl kind)
+ = labelSeenTE lbl `thenTE` \ label_seen ->
returnTE (Nothing,
- if label_seen then Nothing else Just (pprExternDecl label kind))
-
-{- WRONG:
-ppr_decls_Amode (CUnVecLbl direct vectored)
- = labelSeenTE direct `thenTE` \ dlbl_seen ->
- labelSeenTE vectored `thenTE` \ vlbl_seen ->
- let
- ddcl = if dlbl_seen then empty else pprExternDecl direct CodePtrRep
- vdcl = if vlbl_seen then empty else pprExternDecl vectored DataPtrRep
- in
- returnTE (Nothing,
- if (dlbl_seen || not (needsCDecl direct)) &&
- (vlbl_seen || not (needsCDecl vectored)) then Nothing
- else Just (hcat [ptext SLIT("UNVEC"),char '(', ddcl, comma, vdcl, rparen]))
--}
-
-ppr_decls_Amode (CUnVecLbl direct vectored)
- = -- We don't mark either label as "seen", because
- -- we don't know which one will be used and which one tossed
- -- by the C macro...
- --labelSeenTE direct `thenTE` \ dlbl_seen ->
- --labelSeenTE vectored `thenTE` \ vlbl_seen ->
- let
- ddcl = {-if dlbl_seen then empty else-} pprExternDecl direct CodePtrRep
- vdcl = {-if vlbl_seen then empty else-} pprExternDecl vectored DataPtrRep
- in
- returnTE (Nothing,
- if ({-dlbl_seen ||-} not (needsCDecl direct)) &&
- ({-vlbl_seen ||-} not (needsCDecl vectored)) then Nothing
- else Just (hcat [ptext SLIT("UNVEC"),char '(', ddcl, comma, vdcl, rparen]))
-
-ppr_decls_Amode (CTableEntry base index _)
- = ppr_decls_Amode base `thenTE` \ p1 ->
- ppr_decls_Amode index `thenTE` \ p2 ->
- returnTE (maybe_vcat [p1, p2])
+ if label_seen then Nothing else Just (pprExternDecl False{-not in an SRT decl-} lbl))
ppr_decls_Amode (CMacroExpr _ _ amodes)
= ppr_decls_Amodes amodes
= mapTE ppr_decls_Amode amodes `thenTE` \ ps ->
returnTE ( maybe_vcat ps )
\end{code}
+
+Print out a C Label where you want the *address* of the label, not the
+object it refers to. The distinction is important when the label may
+refer to a C structure (info tables and closures, for instance).
+
+When just generating a declaration for the label, use pprCLabel.
+
+\begin{code}
+pprCLabelAddr :: CLabel -> SDoc
+pprCLabelAddr clabel =
+ case labelType clabel of
+ InfoTblType -> addr_of_label
+ ClosureType -> addr_of_label
+ VecTblType -> addr_of_label
+ _ -> pp_label
+ where
+ addr_of_label = ptext SLIT("(P_)&") <> pp_label
+ pp_label = pprCLabel clabel
+
+\end{code}
+
+-----------------------------------------------------------------------------
+Initialising static objects with floating-point numbers. We can't
+just emit the floating point number, because C will cast it to an int
+by rounding it. We want the actual bit-representation of the float.
+
+This is a hack to turn the floating point numbers into ints that we
+can safely initialise to static locations.
+
+\begin{code}
+big_doubles = (getPrimRepSize DoubleRep) /= 1
+
+-- floatss are always 1 word
+floatToWord :: CAddrMode -> CAddrMode
+floatToWord (CLit (MachFloat r))
+ = runST (do
+ arr <- newFloatArray ((0::Int),0)
+ writeFloatArray arr 0 (fromRational r)
+ i <- readIntArray arr 0
+ return (CLit (MachInt (toInteger i)))
+ )
+
+doubleToWords :: CAddrMode -> [CAddrMode]
+doubleToWords (CLit (MachDouble r))
+ | big_doubles -- doubles are 2 words
+ = runST (do
+ arr <- newDoubleArray ((0::Int),1)
+ writeDoubleArray arr 0 (fromRational r)
+ i1 <- readIntArray arr 0
+ i2 <- readIntArray arr 1
+ return [ CLit (MachInt (toInteger i1))
+ , CLit (MachInt (toInteger i2))
+ ]
+ )
+ | otherwise -- doubles are 1 word
+ = runST (do
+ arr <- newDoubleArray ((0::Int),0)
+ writeDoubleArray arr 0 (fromRational r)
+ i <- readIntArray arr 0
+ return [ CLit (MachInt (toInteger i)) ]
+ )
+\end{code}