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(* M2GCCDeclare.def declares Modula-2 types to GCC.
Copyright (C) 2001-2023 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Modula-2; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE M2GCCDeclare ;
(*
Title : M2GCCDeclare
Author : Gaius Mulley
System : UNIX (gm2)
Date : Sat Jul 17 10:28:43 1999
Last edit : Sat Jul 17 10:28:43 1999
Description: declares Modula-2 types to GCC,
only declares a type once all subcomponents are known.
*)
FROM SYSTEM IMPORT WORD ;
FROM m2tree IMPORT Tree ;
EXPORT QUALIFIED FoldConstants,
DeclareConstant, TryDeclareConstant,
DeclareConstructor, TryDeclareConstructor,
DeclareLocalVariables, PromoteToString, DeclareLocalVariable,
InitDeclarations, StartDeclareScope, EndDeclareScope,
DeclareModuleVariables, IsProcedureGccNested,
DeclareProcedure, PoisonSymbols, DeclareParameters,
DeclareM2linkGlobals,
CompletelyResolved, MarkExported, PrintSym,
ConstantKnownAndUsed,
PutToBeSolvedByQuads,
GetTypeMin, GetTypeMax,
WalkAction, IsAction ;
TYPE
WalkAction = PROCEDURE (WORD) ;
IsAction = PROCEDURE (WORD) : BOOLEAN ;
(*
FoldConstants - a wrapper for ResolveConstantExpressions.
*)
PROCEDURE FoldConstants (start, end: CARDINAL) ;
(*
StartDeclareScope - declares types, variables associated with this scope.
*)
PROCEDURE StartDeclareScope (scope: CARDINAL) ;
(*
EndDeclareScope -
*)
PROCEDURE EndDeclareScope ;
(*
DeclareParameters -
*)
PROCEDURE DeclareParameters (sym: CARDINAL) ;
(*
DeclareConstant - if, sym, is a constant then declare it.
The constant must be solvable at this point.
*)
PROCEDURE DeclareConstant (tokenno: CARDINAL; sym: CARDINAL) ;
(*
DeclareConstructor - if, sym, is a constructor then declare it.
The constructor must be solvable at this point.
*)
PROCEDURE DeclareConstructor (tokenno: CARDINAL; quad: CARDINAL; sym: CARDINAL) ;
(*
TryDeclareConstant - try and declare a constant. If, sym, is a
constant try and declare it, if we cannot
then enter it into the to do list.
*)
PROCEDURE TryDeclareConstant (tokenno: CARDINAL; sym: CARDINAL) ;
(*
TryDeclareConstructor - try and declare a constructor. If, sym, is a
constructor try and declare it, if we cannot
then enter it into the to do list.
*)
PROCEDURE TryDeclareConstructor (tokenno: CARDINAL; sym: CARDINAL) ;
(*
DeclareLocalVariables - lists the Local variables for procedure
together with their offset.
*)
PROCEDURE DeclareLocalVariables (procedure: CARDINAL) ;
(*
DeclareLocalVariable - declare a local variable var.
*)
PROCEDURE DeclareLocalVariable (var: CARDINAL) ;
(*
DeclareProcedure - declares procedure, sym, or all procedures inside
module sym.
*)
PROCEDURE DeclareProcedure (sym: WORD) ;
(*
DeclareModuleVariables - declares Module variables for a module
which inside a procedure.
*)
PROCEDURE DeclareModuleVariables (sym: CARDINAL) ;
(*
DeclareM2linkGlobals - will create M2LINK.StaticInitialization
and M2LINK.ForcedModuleInitOrder providing
they have not already been created.
*)
PROCEDURE DeclareM2linkGlobals (tokenno: CARDINAL) ;
(*
IsProcedureGccNested - returns TRUE if procedure, sym, will be considered
as nested by GCC.
This will occur if either its outer defining scope
is a procedure or is a module which is inside a
procedure.
*)
PROCEDURE IsProcedureGccNested (sym: CARDINAL) : BOOLEAN ;
(*
PoisonSymbols - poisons all gcc symbols from procedure, sym.
A debugging aid.
*)
PROCEDURE PoisonSymbols (sym: CARDINAL) ;
(*
PromoteToString - declare, sym, and then promote it to a string.
Note that if sym is a single character we do
*not* record it as a string
but as a char however we always
return a string constant.
*)
PROCEDURE PromoteToString (tokenno: CARDINAL; sym: CARDINAL) : Tree ;
(*
CompletelyResolved - returns TRUE if a symbol has been completely resolved
and is not partially declared (such as a record,
array or procedure type).
*)
PROCEDURE CompletelyResolved (sym: CARDINAL) : BOOLEAN ;
(*
ConstantKnownAndUsed -
*)
PROCEDURE ConstantKnownAndUsed (sym: CARDINAL; t: Tree) ;
(*
PutToBeSolvedByQuads - places, sym, in this list.
*)
PROCEDURE PutToBeSolvedByQuads (sym: CARDINAL) ;
(*
MarkExported - tell GCC to mark all exported procedures in module sym.
*)
PROCEDURE MarkExported (sym: CARDINAL) ;
(*
GetTypeMin - returns a symbol corresponding to MIN(type)
*)
PROCEDURE GetTypeMin (type: CARDINAL) : CARDINAL ;
(*
GetTypeMax - returns a symbol corresponding to MAX(type)
*)
PROCEDURE GetTypeMax (type: CARDINAL) : CARDINAL ;
(*
PrintSym - prints limited information about a symbol.
*)
PROCEDURE PrintSym (sym: CARDINAL) ;
(*
InitDeclarations - initializes default types and the source filename.
*)
PROCEDURE InitDeclarations ;
END M2GCCDeclare.
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