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1006 lines
38 KiB
Nim
Executable File
1006 lines
38 KiB
Nim
Executable File
#
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#
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# The Nimrod Compiler
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# (c) Copyright 2011 Andreas Rumpf
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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# This is the new C code generator; much cleaner and faster
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# than the old one. It also generates better code.
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import
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ast, astalgo, strutils, hashes, trees, platform, magicsys, extccomp,
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options, intsets,
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nversion, nimsets, msgs, crc, bitsets, idents, lists, types, ccgutils, os,
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times, ropes, math, passes, rodread, wordrecg, treetab, cgmeth,
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rodutils, renderer
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when options.hasTinyCBackend:
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import tccgen
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proc cgenPass*(): TPass
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# implementation
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type
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TLabel = PRope # for the C generator a label is just a rope
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TCFileSection = enum # the sections a generated C file consists of
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cfsHeaders, # section for C include file headers
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cfsForwardTypes, # section for C forward typedefs
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cfsTypes, # section for C typedefs
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cfsSeqTypes, # section for sequence types only
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# this is needed for strange type generation
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# reasons
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cfsFieldInfo, # section for field information
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cfsTypeInfo, # section for type information
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cfsProcHeaders, # section for C procs prototypes
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cfsData, # section for C constant data
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cfsVars, # section for C variable declarations
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cfsProcs, # section for C procs that are not inline
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cfsTypeInit1, # section 1 for declarations of type information
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cfsTypeInit2, # section 2 for init of type information
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cfsTypeInit3, # section 3 for init of type information
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cfsDebugInit, # section for init of debug information
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cfsDynLibInit, # section for init of dynamic library binding
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cfsDynLibDeinit # section for deinitialization of dynamic
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# libraries
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TCTypeKind = enum # describes the type kind of a C type
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ctVoid, ctChar, ctBool, ctUInt, ctUInt8, ctUInt16, ctUInt32, ctUInt64,
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ctInt, ctInt8, ctInt16, ctInt32, ctInt64, ctFloat, ctFloat32, ctFloat64,
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ctFloat128, ctArray, ctStruct, ctPtr, ctNimStr, ctNimSeq, ctProc, ctCString
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TCFileSections = array[TCFileSection, PRope] # represents a generated C file
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TCProcSection = enum # the sections a generated C proc consists of
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cpsLocals, # section of local variables for C proc
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cpsInit, # section for init of variables for C proc
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cpsStmts # section of local statements for C proc
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TCProcSections = array[TCProcSection, PRope] # represents a generated C proc
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BModule = ref TCGen
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BProc = ref TCProc
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TBlock{.final.} = object
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id*: int # the ID of the label; positive means that it
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# has been used (i.e. the label should be emitted)
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nestedTryStmts*: int # how many try statements is it nested into
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TCProc{.final.} = object # represents C proc that is currently generated
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s: TCProcSections # the procs sections; short name for readability
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prc: PSym # the Nimrod proc that this C proc belongs to
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BeforeRetNeeded: bool # true iff 'BeforeRet' label for proc is needed
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ThreadVarAccessed: bool # true if the proc already accessed some threadvar
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nestedTryStmts: seq[PNode] # in how many nested try statements we are
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# (the vars must be volatile then)
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labels: Natural # for generating unique labels in the C proc
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blocks: seq[TBlock] # nested blocks
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options: TOptions # options that should be used for code
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# generation; this is the same as prc.options
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# unless prc == nil
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frameLen: int # current length of frame descriptor
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sendClosure: PType # closure record type that we pass
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receiveClosure: PType # closure record type that we get
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module: BModule # used to prevent excessive parameter passing
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withinLoop: int # > 0 if we are within a loop
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TTypeSeq = seq[PType]
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TCGen = object of TPassContext # represents a C source file
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module*: PSym
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filename*: string
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s*: TCFileSections # sections of the C file
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PreventStackTrace: bool # true if stack traces need to be prevented
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usesThreadVars: bool # true if the module uses a thread var
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cfilename*: string # filename of the module (including path,
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# without extension)
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typeCache*: TIdTable # cache the generated types
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forwTypeCache*: TIdTable # cache for forward declarations of types
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declaredThings*: TIntSet # things we have declared in this .c file
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declaredProtos*: TIntSet # prototypes we have declared in this .c file
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headerFiles*: TLinkedList # needed headers to include
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typeInfoMarker*: TIntSet # needed for generating type information
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initProc*: BProc # code for init procedure
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typeStack*: TTypeSeq # used for type generation
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dataCache*: TNodeTable
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forwardedProcs*: TSymSeq # keep forwarded procs here
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typeNodes*, nimTypes*: int # used for type info generation
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typeNodesName*, nimTypesName*: PRope # used for type info generation
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labels*: natural # for generating unique module-scope names
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var
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mainModProcs, mainModInit: PRope # parts of the main module
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gMapping: PRope # the generated mapping file (if requested)
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gProcProfile: Natural # proc profile counter
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gGeneratedSyms: TIntSet # set of ID's of generated symbols
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gPendingModules: seq[BModule] = @[] # list of modules that are not
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# finished with code generation
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gForwardedProcsCounter: int = 0
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gNimDat: BModule # generated global data
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proc ropeff(cformat, llvmformat: string, args: openarray[PRope]): PRope =
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if gCmd == cmdCompileToLLVM: result = ropef(llvmformat, args)
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else: result = ropef(cformat, args)
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proc appff(dest: var PRope, cformat, llvmformat: string,
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args: openarray[PRope]) =
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if gCmd == cmdCompileToLLVM: appf(dest, llvmformat, args)
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else: appf(dest, cformat, args)
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proc addForwardedProc(m: BModule, prc: PSym) =
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m.forwardedProcs.add(prc)
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inc(gForwardedProcsCounter)
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proc addPendingModule(m: BModule) =
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for i in countup(0, high(gPendingModules)):
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if gPendingModules[i] == m:
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InternalError("module already pending: " & m.module.name.s)
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gPendingModules.add(m)
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proc findPendingModule(m: BModule, s: PSym): BModule =
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var ms = getModule(s)
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if ms.id == m.module.id: return m
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for i in countup(0, high(gPendingModules)):
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result = gPendingModules[i]
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if result.module.id == ms.id: return
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InternalError(s.info, "no pending module found for: " & s.name.s)
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proc initLoc(result: var TLoc, k: TLocKind, typ: PType, s: TStorageLoc) =
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result.k = k
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result.s = s
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result.t = GetUniqueType(typ)
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result.r = nil
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result.a = - 1
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result.flags = {}
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proc fillLoc(a: var TLoc, k: TLocKind, typ: PType, r: PRope, s: TStorageLoc) =
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# fills the loc if it is not already initialized
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if a.k == locNone:
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a.k = k
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a.t = getUniqueType(typ)
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a.a = - 1
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a.s = s
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if a.r == nil: a.r = r
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proc newProc(prc: PSym, module: BModule): BProc =
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new(result)
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result.prc = prc
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result.module = module
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if prc != nil: result.options = prc.options
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else: result.options = gOptions
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result.blocks = @[]
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result.nestedTryStmts = @[]
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proc isSimpleConst(typ: PType): bool =
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result = not (skipTypes(typ, abstractVar).kind in
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{tyTuple, tyObject, tyArray, tyArrayConstr, tySet, tySequence})
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proc useHeader(m: BModule, sym: PSym) =
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if lfHeader in sym.loc.Flags:
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assert(sym.annex != nil)
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discard lists.IncludeStr(m.headerFiles, getStr(sym.annex.path))
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proc cgsym(m: BModule, name: string): PRope
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proc ropecg(m: BModule, frmt: TFormatStr, args: openarray[PRope]): PRope =
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var i, j, length, start, num: int
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i = 0
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length = len(frmt)
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result = nil
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num = 0
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while i < length:
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if frmt[i] == '$':
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inc(i) # skip '$'
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case frmt[i]
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of '$':
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app(result, "$")
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inc(i)
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of '#':
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inc(i)
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app(result, args[num])
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inc(num)
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of '0'..'9':
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j = 0
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while true:
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j = (j * 10) + Ord(frmt[i]) - ord('0')
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inc(i)
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if i >= length or not (frmt[i] in {'0'..'9'}): break
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num = j
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if j > high(args) + 1:
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internalError("ropes: invalid format string $" & $(j))
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app(result, args[j - 1])
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of 'N', 'n':
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app(result, tnl)
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inc(i)
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else: InternalError("ropes: invalid format string $" & frmt[i])
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elif frmt[i] == '#' and frmt[i+1] in IdentStartChars:
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inc(i)
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var j = i
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while frmt[j] in IdentChars: inc(j)
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var ident = substr(frmt, i, j-1)
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i = j
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app(result, cgsym(m, ident))
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elif frmt[i] == '#' and frmt[i+1] == '$':
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inc(i, 2)
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var j = 0
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while frmt[i] in Digits:
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j = (j * 10) + Ord(frmt[i]) - ord('0')
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inc(i)
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app(result, cgsym(m, args[j-1].ropeToStr))
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start = i
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while i < length:
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if frmt[i] != '$' and frmt[i] != '#': inc(i)
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else: break
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if i - 1 >= start:
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app(result, substr(frmt, start, i - 1))
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proc appcg(m: BModule, c: var PRope, frmt: TFormatStr,
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args: openarray[PRope]) =
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app(c, ropecg(m, frmt, args))
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proc appcg(m: BModule, s: TCFileSection, frmt: TFormatStr,
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args: openarray[PRope]) =
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app(m.s[s], ropecg(m, frmt, args))
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proc appcg(p: BProc, s: TCProcSection, frmt: TFormatStr,
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args: openarray[PRope]) =
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app(p.s[s], ropecg(p.module, frmt, args))
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include "ccgtypes.nim"
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# ------------------------------ Manager of temporaries ------------------
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proc rdLoc(a: TLoc): PRope =
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# 'read' location (deref if indirect)
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result = a.r
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if lfIndirect in a.flags: result = ropef("(*$1)", [result])
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proc addrLoc(a: TLoc): PRope =
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result = a.r
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if lfIndirect notin a.flags and mapType(a.t) != ctArray:
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result = con("&", result)
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proc rdCharLoc(a: TLoc): PRope =
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# read a location that may need a char-cast:
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result = rdLoc(a)
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if skipTypes(a.t, abstractRange).kind == tyChar:
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result = ropef("((NU8)($1))", [result])
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proc genObjectInit(p: BProc, section: TCProcSection, t: PType, a: TLoc,
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takeAddr: bool) =
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case analyseObjectWithTypeField(t)
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of frNone:
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nil
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of frHeader:
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var r = rdLoc(a)
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if not takeAddr: r = ropef("(*$1)", [r])
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var s = skipTypes(t, abstractInst)
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if gCmd != cmdCompileToCpp:
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while (s.kind == tyObject) and (s.sons[0] != nil):
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app(r, ".Sup")
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s = skipTypes(s.sons[0], abstractInst)
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appcg(p, section, "$1.m_type = $2;$n", [r, genTypeInfo(p.module, t)])
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of frEmbedded:
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# worst case for performance:
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var r = if takeAddr: addrLoc(a) else: rdLoc(a)
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appcg(p, section, "#objectInit($1, $2);$n", [r, genTypeInfo(p.module, t)])
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type
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TAssignmentFlag = enum
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needToCopy, needForSubtypeCheck, afDestIsNil, afDestIsNotNil, afSrcIsNil,
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afSrcIsNotNil
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TAssignmentFlags = set[TAssignmentFlag]
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proc genRefAssign(p: BProc, dest, src: TLoc, flags: TAssignmentFlags)
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proc zeroVar(p: BProc, loc: TLoc, containsGCref: bool) =
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if skipTypes(loc.t, abstractVarRange).Kind notin
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{tyArray, tyArrayConstr, tySet, tyTuple, tyObject}:
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if containsGcref and p.WithInLoop > 0:
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appf(p.s[cpsInit], "$1 = 0;$n", [rdLoc(loc)])
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var nilLoc: TLoc
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initLoc(nilLoc, locTemp, loc.t, onStack)
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nilLoc.r = toRope("NIM_NIL")
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# puts ``unsureAsgnRef`` etc to ``p.s[cpsStmts]``:
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genRefAssign(p, loc, nilLoc, {afSrcIsNil})
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else:
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appf(p.s[cpsStmts], "$1 = 0;$n", [rdLoc(loc)])
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else:
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if containsGcref and p.WithInLoop > 0:
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appf(p.s[cpsInit], "memset((void*)$1, 0, sizeof($2));$n",
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[addrLoc(loc), rdLoc(loc)])
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appcg(p, cpsStmts, "#genericReset((void*)$1, $2);$n",
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[addrLoc(loc), genTypeInfo(p.module, loc.t)])
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else:
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appf(p.s[cpsStmts], "memset((void*)$1, 0, sizeof($2));$n",
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[addrLoc(loc), rdLoc(loc)])
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genObjectInit(p, cpsInit, loc.t, loc, true)
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proc zeroTemp(p: BProc, loc: TLoc) =
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if skipTypes(loc.t, abstractVarRange).Kind notin
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{tyArray, tyArrayConstr, tySet, tyTuple, tyObject}:
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appf(p.s[cpsStmts], "$1 = 0;$n", [rdLoc(loc)])
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when false:
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var nilLoc: TLoc
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initLoc(nilLoc, locTemp, loc.t, onStack)
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nilLoc.r = toRope("NIM_NIL")
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# puts ``unsureAsgnRef`` etc to ``p.s[cpsStmts]``:
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genRefAssign(p, loc, nilLoc, {afSrcIsNil})
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else:
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appf(p.s[cpsStmts], "memset((void*)$1, 0, sizeof($2));$n",
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[addrLoc(loc), rdLoc(loc)])
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when false:
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appcg(p, cpsStmts, "#genericReset((void*)$1, $2);$n",
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[addrLoc(loc), genTypeInfo(p.module, loc.t)])
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proc initVariable(p: BProc, v: PSym) =
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var b = containsGarbageCollectedRef(v.typ)
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if b or v.ast == nil:
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zeroVar(p, v.loc, b)
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proc initTemp(p: BProc, tmp: var TLoc) =
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if containsGarbageCollectedRef(tmp.t) or isInvalidReturnType(tmp.t):
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zeroTemp(p, tmp)
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proc getTemp(p: BProc, t: PType, result: var TLoc) =
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inc(p.labels)
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if gCmd == cmdCompileToLLVM:
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result.r = con("%LOC", toRope(p.labels))
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else:
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result.r = con("LOC", toRope(p.labels))
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appf(p.s[cpsLocals], "$1 $2;$n", [getTypeDesc(p.module, t), result.r])
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result.k = locTemp
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result.a = - 1
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result.t = getUniqueType(t)
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result.s = OnStack
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result.flags = {}
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initTemp(p, result)
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proc cstringLit(p: BProc, r: var PRope, s: string): PRope =
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if gCmd == cmdCompileToLLVM:
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inc(p.module.labels)
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inc(p.labels)
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result = ropef("%LOC$1", [toRope(p.labels)])
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appf(p.module.s[cfsData], "@C$1 = private constant [$2 x i8] $3$n",
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[toRope(p.module.labels), toRope(len(s)), makeLLVMString(s)])
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appf(r, "$1 = getelementptr [$2 x i8]* @C$3, %NI 0, %NI 0$n",
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[result, toRope(len(s)), toRope(p.module.labels)])
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else:
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result = makeCString(s)
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proc cstringLit(m: BModule, r: var PRope, s: string): PRope =
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if gCmd == cmdCompileToLLVM:
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inc(m.labels, 2)
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result = ropef("%MOC$1", [toRope(m.labels - 1)])
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appf(m.s[cfsData], "@MOC$1 = private constant [$2 x i8] $3$n",
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[toRope(m.labels), toRope(len(s)), makeLLVMString(s)])
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appf(r, "$1 = getelementptr [$2 x i8]* @MOC$3, %NI 0, %NI 0$n",
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[result, toRope(len(s)), toRope(m.labels)])
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else:
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result = makeCString(s)
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proc allocParam(p: BProc, s: PSym) =
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assert(s.kind == skParam)
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if lfParamCopy notin s.loc.flags:
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inc(p.labels)
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var tmp = con("%LOC", toRope(p.labels))
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incl(s.loc.flags, lfParamCopy)
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incl(s.loc.flags, lfIndirect)
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appf(p.s[cpsInit], "$1 = alloca $3$n" & "store $3 $2, $3* $1$n",
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[tmp, s.loc.r, getTypeDesc(p.module, s.loc.t)])
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s.loc.r = tmp
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proc localDebugInfo(p: BProc, s: PSym) =
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if {optStackTrace, optEndb} * p.options != {optStackTrace, optEndb}: return
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# XXX work around a bug: No type information for open arrays possible:
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if skipTypes(s.typ, abstractVar).kind == tyOpenArray: return
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var a = con("&", s.loc.r)
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if (s.kind == skParam) and ccgIntroducedPtr(s): a = s.loc.r
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appf(p.s[cpsInit],
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"F.s[$1].address = (void*)$3; F.s[$1].typ = $4; F.s[$1].name = $2;$n",
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[toRope(p.frameLen), makeCString(normalize(s.name.s)), a,
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genTypeInfo(p.module, s.loc.t)])
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inc(p.frameLen)
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proc assignLocalVar(p: BProc, s: PSym) =
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#assert(s.loc.k == locNone) // not yet assigned
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# this need not be fullfilled for inline procs; they are regenerated
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# for each module that uses them!
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if s.loc.k == locNone:
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fillLoc(s.loc, locLocalVar, s.typ, mangleName(s), OnStack)
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app(p.s[cpsLocals], getTypeDesc(p.module, s.loc.t))
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if sfRegister in s.flags: app(p.s[cpsLocals], " register")
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if (sfVolatile in s.flags) or (p.nestedTryStmts.len > 0):
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app(p.s[cpsLocals], " volatile")
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appf(p.s[cpsLocals], " $1;$n", [s.loc.r])
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localDebugInfo(p, s)
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include ccgthreadvars
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proc assignGlobalVar(p: BProc, s: PSym) =
|
|
if s.loc.k == locNone:
|
|
fillLoc(s.loc, locGlobalVar, s.typ, mangleName(s), OnHeap)
|
|
useHeader(p.module, s)
|
|
if lfNoDecl in s.loc.flags: return
|
|
if sfThreadVar in s.flags:
|
|
declareThreadVar(p.module, s, sfImportc in s.flags)
|
|
else:
|
|
if sfImportc in s.flags: app(p.module.s[cfsVars], "extern ")
|
|
app(p.module.s[cfsVars], getTypeDesc(p.module, s.loc.t))
|
|
if sfRegister in s.flags: app(p.module.s[cfsVars], " register")
|
|
if sfVolatile in s.flags: app(p.module.s[cfsVars], " volatile")
|
|
appf(p.module.s[cfsVars], " $1;$n", [s.loc.r])
|
|
if p.module.module.options * {optStackTrace, optEndb} ==
|
|
{optStackTrace, optEndb}:
|
|
appcg(p.module, p.module.s[cfsDebugInit],
|
|
"#dbgRegisterGlobal($1, &$2, $3);$n",
|
|
[cstringLit(p, p.module.s[cfsDebugInit],
|
|
normalize(s.owner.name.s & '.' & s.name.s)),
|
|
s.loc.r, genTypeInfo(p.module, s.typ)])
|
|
|
|
proc assignParam(p: BProc, s: PSym) =
|
|
assert(s.loc.r != nil)
|
|
if sfAddrTaken in s.flags and gCmd == cmdCompileToLLVM: allocParam(p, s)
|
|
localDebugInfo(p, s)
|
|
|
|
proc fillProcLoc(sym: PSym) =
|
|
if sym.loc.k == locNone:
|
|
fillLoc(sym.loc, locProc, sym.typ, mangleName(sym), OnStack)
|
|
|
|
proc getLabel(p: BProc): TLabel =
|
|
inc(p.labels)
|
|
result = con("LA", toRope(p.labels))
|
|
|
|
proc fixLabel(p: BProc, labl: TLabel) =
|
|
appf(p.s[cpsStmts], "$1: ;$n", [labl])
|
|
|
|
proc genVarPrototype(m: BModule, sym: PSym)
|
|
proc genConstPrototype(m: BModule, sym: PSym)
|
|
proc genProc(m: BModule, prc: PSym)
|
|
proc genStmts(p: BProc, t: PNode)
|
|
proc genProcPrototype(m: BModule, sym: PSym)
|
|
|
|
include "ccgexprs.nim", "ccgstmts.nim"
|
|
|
|
# ----------------------------- dynamic library handling -----------------
|
|
# We don't finalize dynamic libs as this does the OS for us.
|
|
|
|
proc libCandidates(s: string, dest: var TStringSeq) =
|
|
var le = strutils.find(s, '(')
|
|
var ri = strutils.find(s, ')', le+1)
|
|
if le >= 0 and ri > le:
|
|
var prefix = substr(s, 0, le - 1)
|
|
var suffix = substr(s, ri + 1)
|
|
for middle in split(substr(s, le + 1, ri - 1), '|'):
|
|
libCandidates(prefix & middle & suffix, dest)
|
|
else:
|
|
add(dest, s)
|
|
|
|
proc loadDynamicLib(m: BModule, lib: PLib) =
|
|
assert(lib != nil)
|
|
if not lib.generated:
|
|
lib.generated = true
|
|
var tmp = getGlobalTempName()
|
|
assert(lib.name == nil)
|
|
lib.name = tmp # BUGFIX: cgsym has awful side-effects
|
|
appf(m.s[cfsVars], "static void* $1;$n", [tmp])
|
|
if lib.path.kind in {nkStrLit..nkTripleStrLit}:
|
|
var s: TStringSeq = @[]
|
|
libCandidates(lib.path.strVal, s)
|
|
var loadlib: PRope = nil
|
|
for i in countup(0, high(s)):
|
|
inc(m.labels)
|
|
if i > 0: app(loadlib, "||")
|
|
appcg(m, loadlib, "($1 = #nimLoadLibrary((#NimStringDesc*) &$2))$n",
|
|
[tmp, getStrLit(m, s[i])])
|
|
appcg(m, m.s[cfsDynLibInit],
|
|
"if (!($1)) #nimLoadLibraryError((#NimStringDesc*) &$2);$n",
|
|
[loadlib, getStrLit(m, lib.path.strVal)])
|
|
else:
|
|
var p = newProc(nil, m)
|
|
var dest: TLoc
|
|
initLocExpr(p, lib.path, dest)
|
|
app(m.s[cfsVars], p.s[cpsLocals])
|
|
app(m.s[cfsDynLibInit], p.s[cpsInit])
|
|
app(m.s[cfsDynLibInit], p.s[cpsStmts])
|
|
appcg(m, m.s[cfsDynLibInit],
|
|
"if (!($1 = #nimLoadLibrary($2))) #nimLoadLibraryError($2);$n",
|
|
[tmp, rdLoc(dest)])
|
|
|
|
if lib.name == nil: InternalError("loadDynamicLib")
|
|
|
|
proc mangleDynLibProc(sym: PSym): PRope =
|
|
if sfCompilerProc in sym.flags:
|
|
# NOTE: sym.loc.r is the external name!
|
|
result = toRope(sym.name.s)
|
|
else:
|
|
result = ropef("Dl_$1", [toRope(sym.id)])
|
|
|
|
proc SymInDynamicLib(m: BModule, sym: PSym) =
|
|
var lib = sym.annex
|
|
var extname = sym.loc.r
|
|
loadDynamicLib(m, lib)
|
|
#discard cgsym(m, "nimGetProcAddr")
|
|
if gCmd == cmdCompileToLLVM: incl(sym.loc.flags, lfIndirect)
|
|
var tmp = mangleDynLibProc(sym)
|
|
sym.loc.r = tmp # from now on we only need the internal name
|
|
sym.typ.sym = nil # generate a new name
|
|
inc(m.labels, 2)
|
|
appcg(m, m.s[cfsDynLibInit],
|
|
"$1 = ($2) #nimGetProcAddr($3, $4);$n",
|
|
[tmp, getTypeDesc(m, sym.typ),
|
|
lib.name, cstringLit(m, m.s[cfsDynLibInit], ropeToStr(extname))])
|
|
appff(m.s[cfsVars], "$2 $1;$n",
|
|
"$1 = linkonce global $2 zeroinitializer$n",
|
|
[sym.loc.r, getTypeDesc(m, sym.loc.t)])
|
|
|
|
proc cgsym(m: BModule, name: string): PRope =
|
|
var sym = magicsys.getCompilerProc(name)
|
|
if sym != nil:
|
|
case sym.kind
|
|
of skProc, skMethod, skConverter: genProc(m, sym)
|
|
of skVar, skResult: genVarPrototype(m, sym)
|
|
of skType: discard getTypeDesc(m, sym.typ)
|
|
else: InternalError("cgsym: " & name)
|
|
else:
|
|
# we used to exclude the system module from this check, but for DLL
|
|
# generation support this sloppyness leads to hard to detect bugs, so
|
|
# we're picky here for the system module too:
|
|
rawMessage(errSystemNeeds, name)
|
|
result = sym.loc.r
|
|
|
|
proc generateHeaders(m: BModule) =
|
|
app(m.s[cfsHeaders], "#include \"nimbase.h\"" & tnl & tnl)
|
|
var it = PStrEntry(m.headerFiles.head)
|
|
while it != nil:
|
|
if it.data[0] notin {'\"', '<'}:
|
|
appf(m.s[cfsHeaders], "#include \"$1\"$n", [toRope(it.data)])
|
|
else:
|
|
appf(m.s[cfsHeaders], "#include $1$n", [toRope(it.data)])
|
|
it = PStrEntry(it.Next)
|
|
|
|
proc getFrameDecl(p: BProc) =
|
|
var slots: PRope
|
|
if p.frameLen > 0:
|
|
discard cgsym(p.module, "TVarSlot")
|
|
slots = ropeff(" TVarSlot s[$1];$n", ", [$1 x %TVarSlot]",
|
|
[toRope(p.frameLen)])
|
|
else:
|
|
slots = nil
|
|
appff(p.s[cpsLocals], "volatile struct {TFrame* prev;" &
|
|
"NCSTRING procname;NI line;NCSTRING filename;" &
|
|
"NI len;$n$1} F;$n",
|
|
"%TF = type {%TFrame*, i8*, %NI, %NI$1}$n" &
|
|
"%F = alloca %TF$n", [slots])
|
|
inc(p.labels)
|
|
prepend(p.s[cpsInit], ropeff("F.len = $1;$n",
|
|
"%LOC$2 = getelementptr %TF %F, %NI 4$n" &
|
|
"store %NI $1, %NI* %LOC$2$n", [toRope(p.frameLen), toRope(p.labels)]))
|
|
|
|
proc retIsNotVoid(s: PSym): bool =
|
|
result = (s.typ.sons[0] != nil) and not isInvalidReturnType(s.typ.sons[0])
|
|
|
|
proc initFrame(p: BProc, procname, filename: PRope): PRope =
|
|
result = ropecg(p.module,
|
|
"F.procname = $1;$n" &
|
|
"F.filename = $2;$n" &
|
|
"F.line = 0;$n" &
|
|
"#pushFrame((TFrame*)&F);$n", [procname, filename])
|
|
|
|
proc deinitFrame(p: BProc): PRope =
|
|
result = ropecg(p.module, "#popFrame();$n")
|
|
|
|
proc genProcAux(m: BModule, prc: PSym) =
|
|
var p = newProc(prc, m)
|
|
var header = genProcHeader(m, prc)
|
|
if gCmd != cmdCompileToLLVM and lfExportLib in prc.loc.flags:
|
|
header = con("N_LIB_EXPORT ", header)
|
|
var returnStmt: PRope = nil
|
|
assert(prc.ast != nil)
|
|
if sfPure notin prc.flags and prc.typ.sons[0] != nil:
|
|
var res = prc.ast.sons[resultPos].sym # get result symbol
|
|
if not isInvalidReturnType(prc.typ.sons[0]):
|
|
# declare the result symbol:
|
|
assignLocalVar(p, res)
|
|
assert(res.loc.r != nil)
|
|
returnStmt = ropeff("return $1;$n", "ret $1$n", [rdLoc(res.loc)])
|
|
initVariable(p, res)
|
|
else:
|
|
fillResult(res)
|
|
assignParam(p, res)
|
|
if skipTypes(res.typ, abstractInst).kind == tyArray:
|
|
incl(res.loc.flags, lfIndirect)
|
|
res.loc.s = OnUnknown
|
|
for i in countup(1, sonsLen(prc.typ.n) - 1):
|
|
var param = prc.typ.n.sons[i].sym
|
|
assignParam(p, param)
|
|
genStmts(p, prc.ast.sons[codePos]) # modifies p.locals, p.init, etc.
|
|
var generatedProc: PRope
|
|
if sfPure in prc.flags:
|
|
generatedProc = ropeff("$1 {$n$2$3$4}$n", "define $1 {$n$2$3$4}$n",
|
|
[header, p.s[cpsLocals], p.s[cpsInit], p.s[cpsStmts]])
|
|
else:
|
|
generatedProc = ropeff("$1 {$n", "define $1 {$n", [header])
|
|
if optStackTrace in prc.options:
|
|
getFrameDecl(p)
|
|
app(generatedProc, p.s[cpsLocals])
|
|
var procname = CStringLit(p, generatedProc, prc.name.s)
|
|
var filename = CStringLit(p, generatedProc, toFilename(prc.info))
|
|
app(generatedProc, initFrame(p, procname, filename))
|
|
else:
|
|
app(generatedProc, p.s[cpsLocals])
|
|
if (optProfiler in prc.options) and (gCmd != cmdCompileToLLVM):
|
|
if gProcProfile >= 64 * 1024:
|
|
InternalError(prc.info, "too many procedures for profiling")
|
|
discard cgsym(m, "profileData")
|
|
app(p.s[cpsLocals], "ticks NIM_profilingStart;" & tnl)
|
|
if prc.loc.a < 0:
|
|
appf(m.s[cfsDebugInit], "profileData[$1].procname = $2;$n", [
|
|
toRope(gProcProfile),
|
|
makeCString(prc.name.s)])
|
|
prc.loc.a = gProcProfile
|
|
inc(gProcProfile)
|
|
prepend(p.s[cpsInit], toRope("NIM_profilingStart = getticks();" & tnl))
|
|
app(generatedProc, p.s[cpsInit])
|
|
app(generatedProc, p.s[cpsStmts])
|
|
if p.beforeRetNeeded: app(generatedProc, "BeforeRet: ;" & tnl)
|
|
if optStackTrace in prc.options: app(generatedProc, deinitFrame(p))
|
|
if (optProfiler in prc.options) and (gCmd != cmdCompileToLLVM):
|
|
appf(generatedProc,
|
|
"profileData[$1].total += elapsed(getticks(), NIM_profilingStart);$n",
|
|
[toRope(prc.loc.a)])
|
|
app(generatedProc, returnStmt)
|
|
app(generatedProc, '}' & tnl)
|
|
app(m.s[cfsProcs], generatedProc)
|
|
|
|
proc genProcPrototype(m: BModule, sym: PSym) =
|
|
useHeader(m, sym)
|
|
if lfNoDecl in sym.loc.Flags: return
|
|
if lfDynamicLib in sym.loc.Flags:
|
|
if sym.owner.id != m.module.id and
|
|
not ContainsOrIncl(m.declaredThings, sym.id):
|
|
appf(m.s[cfsVars], "extern $1 $2;$n",
|
|
[getTypeDesc(m, sym.loc.t), mangleDynLibProc(sym)])
|
|
if gCmd == cmdCompileToLLVM: incl(sym.loc.flags, lfIndirect)
|
|
elif not ContainsOrIncl(m.declaredProtos, sym.id):
|
|
appf(m.s[cfsProcHeaders], "$1;$n", [genProcHeader(m, sym)])
|
|
|
|
proc genProcNoForward(m: BModule, prc: PSym) =
|
|
fillProcLoc(prc)
|
|
useHeader(m, prc)
|
|
if lfImportCompilerProc in prc.loc.flags:
|
|
# dependency to a compilerproc:
|
|
discard cgsym(m, prc.name.s)
|
|
return
|
|
genProcPrototype(m, prc)
|
|
if lfNoDecl in prc.loc.Flags: nil
|
|
elif prc.typ.callConv == ccInline:
|
|
# We add inline procs to the calling module to enable C based inlining.
|
|
# This also means that a check with ``gGeneratedSyms`` is wrong, we need
|
|
# a check for ``m.declaredThings``.
|
|
if not ContainsOrIncl(m.declaredThings, prc.id): genProcAux(m, prc)
|
|
elif lfDynamicLib in prc.loc.flags:
|
|
if not ContainsOrIncl(gGeneratedSyms, prc.id):
|
|
SymInDynamicLib(findPendingModule(m, prc), prc)
|
|
elif sfImportc notin prc.flags:
|
|
if not ContainsOrIncl(gGeneratedSyms, prc.id):
|
|
genProcAux(findPendingModule(m, prc), prc)
|
|
|
|
proc genProc(m: BModule, prc: PSym) =
|
|
if sfBorrow in prc.flags: return
|
|
fillProcLoc(prc)
|
|
if {sfForward, sfFromGeneric} * prc.flags != {}: addForwardedProc(m, prc)
|
|
else: genProcNoForward(m, prc)
|
|
|
|
proc genVarPrototype(m: BModule, sym: PSym) =
|
|
assert(sfGlobal in sym.flags)
|
|
useHeader(m, sym)
|
|
fillLoc(sym.loc, locGlobalVar, sym.typ, mangleName(sym), OnHeap)
|
|
if (lfNoDecl in sym.loc.Flags) or ContainsOrIncl(m.declaredThings, sym.id):
|
|
return
|
|
if sym.owner.id != m.module.id:
|
|
# else we already have the symbol generated!
|
|
assert(sym.loc.r != nil)
|
|
if sfThreadVar in sym.flags:
|
|
declareThreadVar(m, sym, true)
|
|
else:
|
|
app(m.s[cfsVars], "extern ")
|
|
app(m.s[cfsVars], getTypeDesc(m, sym.loc.t))
|
|
if sfRegister in sym.flags: app(m.s[cfsVars], " register")
|
|
if sfVolatile in sym.flags: app(m.s[cfsVars], " volatile")
|
|
appf(m.s[cfsVars], " $1;$n", [sym.loc.r])
|
|
|
|
proc genConstPrototype(m: BModule, sym: PSym) =
|
|
useHeader(m, sym)
|
|
if sym.loc.k == locNone:
|
|
fillLoc(sym.loc, locData, sym.typ, mangleName(sym), OnUnknown)
|
|
if (lfNoDecl in sym.loc.Flags) or
|
|
ContainsOrIncl(m.declaredThings, sym.id):
|
|
return
|
|
if sym.owner.id != m.module.id:
|
|
# else we already have the symbol generated!
|
|
assert(sym.loc.r != nil)
|
|
appff(m.s[cfsData], "extern NIM_CONST $1 $2;$n",
|
|
"$1 = linkonce constant $2 zeroinitializer",
|
|
[getTypeDesc(m, sym.loc.t), sym.loc.r])
|
|
|
|
proc getFileHeader(cfilenoext: string): PRope =
|
|
if optCompileOnly in gGlobalOptions:
|
|
result = ropeff("/* Generated by Nimrod Compiler v$1 */$n" &
|
|
"/* (c) 2011 Andreas Rumpf */$n",
|
|
"; Generated by Nimrod Compiler v$1$n" &
|
|
"; (c) 2011 Andreas Rumpf$n", [toRope(versionAsString)])
|
|
else:
|
|
result = ropeff("/* Generated by Nimrod Compiler v$1 */$n" &
|
|
"/* (c) 2011 Andreas Rumpf */$n" &
|
|
"/* Compiled for: $2, $3, $4 */$n" &
|
|
"/* Command for C compiler:$n $5 */$n",
|
|
"; Generated by Nimrod Compiler v$1$n" &
|
|
"; (c) 2011 Andreas Rumpf$n" & "; Compiled for: $2, $3, $4$n" &
|
|
"; Command for LLVM compiler:$n $5$n", [toRope(versionAsString),
|
|
toRope(platform.OS[targetOS].name),
|
|
toRope(platform.CPU[targetCPU].name),
|
|
toRope(extccomp.CC[extccomp.ccompiler].name),
|
|
toRope(getCompileCFileCmd(cfilenoext))])
|
|
case platform.CPU[targetCPU].intSize
|
|
of 16:
|
|
appff(result,
|
|
"$ntypedef short int NI;$n" & "typedef unsigned short int NU;$n",
|
|
"$n%NI = type i16$n", [])
|
|
of 32:
|
|
appff(result,
|
|
"$ntypedef long int NI;$n" & "typedef unsigned long int NU;$n",
|
|
"$n%NI = type i32$n", [])
|
|
of 64:
|
|
appff(result, "$ntypedef long long int NI;$n" &
|
|
"typedef unsigned long long int NU;$n", "$n%NI = type i64$n", [])
|
|
else:
|
|
nil
|
|
|
|
proc genMainProc(m: BModule) =
|
|
const
|
|
CommonMainBody =
|
|
" nim__datInit();$n" &
|
|
" systemInit();$n" &
|
|
"$1" &
|
|
"$2"
|
|
PosixNimMain =
|
|
"int cmdCount;$n" &
|
|
"char** cmdLine;$n" &
|
|
"char** gEnv;$n" &
|
|
"N_CDECL(void, NimMain)(void) {$n" &
|
|
CommonMainBody & "}$n"
|
|
PosixCMain = "int main(int argc, char** args, char** env) {$n" &
|
|
" cmdLine = args;$n" & " cmdCount = argc;$n" & " gEnv = env;$n" &
|
|
" NimMain();$n" & " return 0;$n" & "}$n"
|
|
WinNimMain = "N_CDECL(void, NimMain)(void) {$n" &
|
|
CommonMainBody & "}$n"
|
|
WinCMain = "N_STDCALL(int, WinMain)(HINSTANCE hCurInstance, $n" &
|
|
" HINSTANCE hPrevInstance, $n" &
|
|
" LPSTR lpCmdLine, int nCmdShow) {$n" &
|
|
" NimMain();$n" & " return 0;$n" & "}$n"
|
|
WinNimDllMain = "N_LIB_EXPORT N_CDECL(void, NimMain)(void) {$n" &
|
|
CommonMainBody & "}$n"
|
|
WinCDllMain =
|
|
"BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fwdreason, $n" &
|
|
" LPVOID lpvReserved) {$n" & " NimMain();$n" &
|
|
" return 1;$n" & "}$n"
|
|
PosixNimDllMain = WinNimDllMain
|
|
PosixCDllMain =
|
|
"void NIM_POSIX_INIT NimMainInit(void) {$n" &
|
|
" NimMain();$n}$n"
|
|
var nimMain, otherMain: TFormatStr
|
|
if platform.targetOS == osWindows and
|
|
gGlobalOptions * {optGenGuiApp, optGenDynLib} != {}:
|
|
if optGenGuiApp in gGlobalOptions:
|
|
nimMain = WinNimMain
|
|
otherMain = WinCMain
|
|
else:
|
|
nimMain = WinNimDllMain
|
|
otherMain = WinCDllMain
|
|
discard lists.IncludeStr(m.headerFiles, "<windows.h>")
|
|
elif optGenDynLib in gGlobalOptions:
|
|
nimMain = posixNimDllMain
|
|
otherMain = posixCDllMain
|
|
else:
|
|
nimMain = PosixNimMain
|
|
otherMain = PosixCMain
|
|
if gBreakpoints != nil: discard cgsym(m, "dbgRegisterBreakpoint")
|
|
inc(m.labels)
|
|
appcg(m, m.s[cfsProcs], nimMain, [
|
|
gBreakpoints, mainModInit, toRope(m.labels)])
|
|
if not (optNoMain in gGlobalOptions):
|
|
appcg(m, m.s[cfsProcs], otherMain, [])
|
|
|
|
proc getInitName(m: PSym): PRope =
|
|
result = ropeff("$1Init", "@$1Init", [toRope(m.name.s)])
|
|
|
|
proc registerModuleToMain(m: PSym) =
|
|
var initname = getInitName(m)
|
|
appff(mainModProcs, "N_NOINLINE(void, $1)(void);$n",
|
|
"declare void $1() noinline$n", [initname])
|
|
if not (sfSystemModule in m.flags):
|
|
appff(mainModInit, "$1();$n", "call void ()* $1$n", [initname])
|
|
|
|
proc genInitCode(m: BModule) =
|
|
if optProfiler in m.initProc.options:
|
|
# This does not really belong here, but there is no good place for this
|
|
# code. I don't want to put this to the proc generation as the
|
|
# ``IncludeStr`` call is quite slow.
|
|
discard lists.IncludeStr(m.headerFiles, "<cycle.h>")
|
|
var initname = getInitName(m.module)
|
|
var prc = ropeff("N_NOINLINE(void, $1)(void) {$n",
|
|
"define void $1() noinline {$n", [initname])
|
|
if m.typeNodes > 0:
|
|
appcg(m, m.s[cfsTypeInit1], "static #TNimNode $1[$2];$n",
|
|
[m.typeNodesName, toRope(m.typeNodes)])
|
|
if m.nimTypes > 0:
|
|
appcg(m, m.s[cfsTypeInit1], "static #TNimType $1[$2];$n",
|
|
[m.nimTypesName, toRope(m.nimTypes)])
|
|
if optStackTrace in m.initProc.options:
|
|
# BUT: the generated init code might depend on a current frame, so
|
|
# declare it nevertheless:
|
|
getFrameDecl(m.initProc)
|
|
if optStackTrace in m.initProc.options and not m.PreventStackTrace:
|
|
app(prc, m.initProc.s[cpsLocals])
|
|
app(prc, m.s[cfsTypeInit1])
|
|
var procname = CStringLit(m.initProc, prc, m.module.name.s)
|
|
var filename = CStringLit(m.initProc, prc, toFilename(m.module.info))
|
|
app(prc, initFrame(m.initProc, procname, filename))
|
|
else:
|
|
app(prc, m.initProc.s[cpsLocals])
|
|
app(prc, m.s[cfsTypeInit1])
|
|
app(prc, m.s[cfsTypeInit2])
|
|
app(prc, m.s[cfsTypeInit3])
|
|
app(prc, m.s[cfsDebugInit])
|
|
app(prc, m.s[cfsDynLibInit])
|
|
app(prc, m.initProc.s[cpsInit])
|
|
app(prc, m.initProc.s[cpsStmts])
|
|
if optStackTrace in m.initProc.options and not m.PreventStackTrace:
|
|
app(prc, deinitFrame(m.initProc))
|
|
app(prc, '}' & tnl & tnl)
|
|
app(m.s[cfsProcs], prc)
|
|
|
|
proc genModule(m: BModule, cfilenoext: string): PRope =
|
|
result = getFileHeader(cfilenoext)
|
|
generateHeaders(m)
|
|
generateThreadLocalStorage(m)
|
|
for i in countup(low(TCFileSection), cfsProcs): app(result, m.s[i])
|
|
|
|
proc rawNewModule(module: PSym, filename: string): BModule =
|
|
new(result)
|
|
InitLinkedList(result.headerFiles)
|
|
result.declaredThings = initIntSet()
|
|
result.declaredProtos = initIntSet()
|
|
result.cfilename = filename
|
|
result.filename = filename
|
|
initIdTable(result.typeCache)
|
|
initIdTable(result.forwTypeCache)
|
|
result.module = module
|
|
result.typeInfoMarker = initIntSet()
|
|
result.initProc = newProc(nil, result)
|
|
result.initProc.options = gOptions
|
|
initNodeTable(result.dataCache)
|
|
result.typeStack = @[]
|
|
result.forwardedProcs = @[]
|
|
result.typeNodesName = getTempName()
|
|
result.nimTypesName = getTempName()
|
|
result.PreventStackTrace = sfSystemModule in module.flags
|
|
|
|
proc newModule(module: PSym, filename: string): BModule =
|
|
result = rawNewModule(module, filename)
|
|
if (optDeadCodeElim in gGlobalOptions):
|
|
if (sfDeadCodeElim in module.flags):
|
|
InternalError("added pending module twice: " & filename)
|
|
addPendingModule(result)
|
|
|
|
proc registerTypeInfoModule() =
|
|
const moduleName = "nim__dat"
|
|
var s = NewSym(skModule, getIdent(moduleName), nil)
|
|
gNimDat = rawNewModule(s, joinPath(options.projectPath, moduleName) & ".nim")
|
|
gNimDat.PreventStackTrace = true
|
|
addPendingModule(gNimDat)
|
|
appff(mainModProcs, "N_NOINLINE(void, $1)(void);$n",
|
|
"declare void $1() noinline$n", [getInitName(s)])
|
|
|
|
proc myOpen(module: PSym, filename: string): PPassContext =
|
|
if gNimDat == nil: registerTypeInfoModule()
|
|
result = newModule(module, filename)
|
|
|
|
proc myOpenCached(module: PSym, filename: string,
|
|
rd: PRodReader): PPassContext =
|
|
if gNimDat == nil:
|
|
registerTypeInfoModule()
|
|
var cfile = changeFileExt(completeCFilePath(filename), cExt)
|
|
var cfilenoext = changeFileExt(cfile, "")
|
|
addFileToLink(cfilenoext)
|
|
registerModuleToMain(module)
|
|
# XXX: this cannot be right here, initalization has to be appended during
|
|
# the ``myClose`` call
|
|
result = nil
|
|
|
|
proc shouldRecompile(code: PRope, cfile, cfilenoext: string): bool =
|
|
result = true
|
|
if not (optForceFullMake in gGlobalOptions):
|
|
var objFile = toObjFile(cfilenoext)
|
|
if writeRopeIfNotEqual(code, cfile): return
|
|
if ExistsFile(objFile) and os.FileNewer(objFile, cfile): result = false
|
|
else:
|
|
writeRope(code, cfile)
|
|
|
|
proc myProcess(b: PPassContext, n: PNode): PNode =
|
|
result = n
|
|
if b == nil or passes.skipCodegen(n): return
|
|
var m = BModule(b)
|
|
m.initProc.options = gOptions
|
|
genStmts(m.initProc, n)
|
|
|
|
proc finishModule(m: BModule) =
|
|
var i = 0
|
|
while i <= high(m.forwardedProcs):
|
|
# Note: ``genProc`` may add to ``m.forwardedProcs``, so we cannot use
|
|
# a ``for`` loop here
|
|
var prc = m.forwardedProcs[i]
|
|
if sfForward in prc.flags:
|
|
InternalError(prc.info, "still forwarded: " & prc.name.s)
|
|
genProcNoForward(m, prc)
|
|
inc(i)
|
|
assert(gForwardedProcsCounter >= i)
|
|
dec(gForwardedProcsCounter, i)
|
|
setlen(m.forwardedProcs, 0)
|
|
|
|
proc writeModule(m: BModule) =
|
|
# generate code for the init statements of the module:
|
|
genInitCode(m)
|
|
finishTypeDescriptions(m)
|
|
var cfile = completeCFilePath(m.cfilename)
|
|
var cfilenoext = changeFileExt(cfile, "")
|
|
if sfMainModule in m.module.flags:
|
|
# generate main file:
|
|
app(m.s[cfsProcHeaders], mainModProcs)
|
|
GenerateThreadVarsSize(m)
|
|
var code = genModule(m, cfilenoext)
|
|
|
|
when hasTinyCBackend:
|
|
if gCmd == cmdRun:
|
|
tccgen.compileCCode(ropeToStr(code))
|
|
return
|
|
|
|
if shouldRecompile(code, changeFileExt(cfile, cExt), cfilenoext):
|
|
addFileToCompile(cfilenoext)
|
|
addFileToLink(cfilenoext)
|
|
|
|
proc myClose(b: PPassContext, n: PNode): PNode =
|
|
result = n
|
|
if b == nil or passes.skipCodegen(n): return
|
|
var m = BModule(b)
|
|
if n != nil:
|
|
m.initProc.options = gOptions
|
|
genStmts(m.initProc, n)
|
|
registerModuleToMain(m.module)
|
|
if not (optDeadCodeElim in gGlobalOptions) and
|
|
not (sfDeadCodeElim in m.module.flags):
|
|
finishModule(m)
|
|
if sfMainModule in m.module.flags:
|
|
var disp = generateMethodDispatchers()
|
|
for i in 0..sonsLen(disp)-1: genProcAux(gNimDat, disp.sons[i].sym)
|
|
genMainProc(m)
|
|
# we need to process the transitive closure because recursive module
|
|
# deps are allowed (and the system module is processed in the wrong
|
|
# order anyway)
|
|
while gForwardedProcsCounter > 0:
|
|
for i in countup(0, high(gPendingModules)):
|
|
finishModule(gPendingModules[i])
|
|
for i in countup(0, high(gPendingModules)): writeModule(gPendingModules[i])
|
|
setlen(gPendingModules, 0)
|
|
if not (optDeadCodeElim in gGlobalOptions) and
|
|
not (sfDeadCodeElim in m.module.flags):
|
|
writeModule(m)
|
|
if sfMainModule in m.module.flags: writeMapping(gMapping)
|
|
|
|
proc cgenPass(): TPass =
|
|
initPass(result)
|
|
result.open = myOpen
|
|
result.openCached = myOpenCached
|
|
result.process = myProcess
|
|
result.close = myClose
|
|
|
|
InitIiTable(gToTypeInfoId)
|
|
gGeneratedSyms = initIntSet()
|