[Gm2] latest CVS changes

[Gaius Mulley]

Hi,

I've just checked in a huge number of changes.  However the compiler
is currently broken - feel free to read the code and inspect
the changes etc.  But currently there are a few fundamental bugs,
which I hope to fix in the next day or so,

regards,
Gaius


        * gm2/gm2/Make-lang.in:  added M2EXCEPTION.def
          RTExceptions.def
          M2EXCEPTION.mod RTExceptions.mod to the list of library
          modules.
        * gm2/gm2/README:  fixed CVS command instruction.
        * gm2/gm2/gccgm2.c:  added gccgm2_GetM2Integer8,
          gccgm2_GetM2Integer16,
          gccgm2_GetM2Integer32, gccgm2_GetM2Integer64,
          gccgm2_GetM2Cardinal8,
          gccgm2_GetM2Cardinal16, gccgm2_GetM2Cardinal32,
          gccgm2_GetM2Cardinal64,
          gccgm2_GetM2Word16, gccgm2_GetM2Word32, gccgm2_GetM2Word64,
          gccgm2_GetM2Real32, gccgm2_GetM2Real64, gccgm2_GetM2Real96,
          gccgm2_GetM2Real128, gccgm2_BuildIfThenDoEnd,
          gccgm2_BuildIfThenElseEnd,
          gccgm2_IsTrue, gccgm2_IsFalse, gccgm2_GetTreeType,
          gccgm2_AddStatement,
          build_m2_specific_size_type, build_m2_integer8_type_node,
          build_m2_integer16_type_node, build_m2_integer32_type_node,
          build_m2_integer64_type_node, build_m2_cardinal8_type_node,
          build_m2_cardinal16_type_node,
          build_m2_cardinal32_type_node,
          build_m2_cardinal64_type_node, build_m2_word16_type_node,
          build_m2_word32_type_node, build_m2_word64_type_node,
          build_m2_real32_type_node, build_m2_real64_type_node,
          build_m2_real96_type_node and build_m2_real128_type_node.
        * gm2/gm2/lang-options.h:  introduced -fdump-system-exports.
        * gm2/gm2/m2.flex:  added the token __COLUMN__ to gm2
          (m2flex_GetColumnNo).
        * gm2/gm2/m2pp.c:  updated copyright dates.
        * gm2/gm2/gm2-compiler/Lists.def:  tidied up spacing.
        * gm2/gm2/gm2-compiler/M2Base.def:  added IsTrunc, IsFloat,
          ExceptionAssign,
          ExceptionInc, ExceptionDec, ExceptionStaticArray,
          ExceptionDynamicArray,
          ExceptionForLoopBegin, ExceptionForLoopTo,
          ExceptionForLoopEnd,
          ExceptionPointerNil, ExceptionNoReturn, ExceptionCase,
          ExceptionNo.
        * gm2/gm2/gm2-compiler/M2Base.mod:  implemented above
          procedures and also
          introduced assignment, expression and parameter passing
          matrices for
          the new system types.
        * gm2/gm2/gm2-compiler/M2GCCDeclare.mod:  declare new fixed
          sized types.
        * gm2/gm2/gm2-compiler/M2GenGCC.def:  export
          GetHighFromUnbounded.
        * gm2/gm2/gm2-compiler/M2GenGCC.mod:  fixed the --fixme--
          requests
          surrounding scope naming for error messages.  Refactored
          GetHighFromUnbounded.  Renamed ExpandExpressionStatement to
          AddStatement.  Renamed BuildAssignment to
          BuildAssignmentTree.
          use IsTrunc rather than comparing symbol to Trunc.
          Introduced scope stack to identify scope name for better
          error
          messages.
        * gm2/gm2/gm2-compiler/M2Options.def:  export
          DumpSystemExports.
        * gm2/gm2/gm2-compiler/M2Options.mod:  detect
          DumpSystemExports.
        * gm2/gm2/gm2-compiler/M2Quads.mod:  utilise IsFloat, IsTrunc,
          removed GetTypeMinMax, use M2Range functions instead of
          M2Quads versions.  Allow ADR("string").
        * gm2/gm2/gm2-compiler/M2Range.def:  modify CodeRangeCheck and
          CodeErrorCheck.
        * gm2/gm2/gm2-compiler/M2Range.mod:  finished implementation.
        * gm2/gm2/gm2-compiler/M2System.def:  export IntegerN,
          CardinalN
          WordN, RealN.
        * gm2/gm2/gm2-compiler/M2System.mod:  implemented above and
          also
          implemented many support procedures.  Heavily refactored
          code.
        * gm2/gm2/gm2-compiler/P2SymBuild.mod:  fixed bug reported by
          Scott Iverson (ARRAY OF importedType).  Type checking of
          parameter types extended to embrace PedanticParamNames for
          type names as well.
        * gm2/gm2/gm2-compiler/SymbolKey.def:  tidied up spacing.
        * gm2/gm2/gm2-compiler/SymbolKey.mod:  improved error message.
        * gm2/gm2/gm2-compiler/SymbolTable.def:  introduced
          isUnbounded
          parameter into PutVarParam and PutParam.
        * gm2/gm2/gm2-compiler/SymbolTable.mod:  introduced
          PartialUnbounded
          to fix the ARRAY OF importedType bug above.  New procedures,
          PutPartialUnbounded, HandleHiddenOrDeclare,
          FillInUnboundedFields,
          FillInUnknownFields.  Fixed bug to allow ARRAY OF proctype.
          Refactored to utilise HandleHiddenOrDeclare.
        * gm2/gm2/gm2-compiler/gccgm2.def:  exported new data type
          functions.
          Define IsTrue, IsFalse, BuildIfThenDoEnd,
          BuildIfThenElseEnd, GetTreeType.
          Renamed BuildAssignment to BuildAssignmentTree
          and BuildProcedureCall to BuildProcedureCallTree
          and ExpandExpressionStatement to AddStatement.
        * gm2/gm2/gm2-libs/M2RTS.def:  export new Exception handlers,
          AssignmentException, IncException, DecException,
          StaticArraySubscriptException,
          DynamicArraySubscriptException,
          ForLoopBeginException, ForLoopToException,
          ForLoopEndException,
          PointerNilException, NoReturnException, CaseException,
          NoException.
          Removed old exception handlers.
        * gm2/gm2/gm2-libs/M2RTS.mod:  implemented above by using
          M2EXCEPTION and RTExceptions.
        * gm2/gm2/gm2-libs/SysStorage.mod:  tidied up spacing.
        * gm2/gm2/gm2-libs-boot/SYSTEM.def:  tidied up spacing.
        * gm2/gm2/init/gm2-gccinit:  added RTExceptions and
          M2EXCEPTION.
        * gm2/gm2/init/gm2lccinit:  added RTExceptions and
          M2EXCEPTION.
        * gm2/gm2/init/gm2lgeninit:  added RTExceptions and
          M2EXCEPTION.
        * gm2/gm2/init/gm2linit:  added RTExceptions and M2EXCEPTION.
        * gm2/gm2/init/gm2lsubinit:  added RTExceptions and
          M2EXCEPTION.
        * gm2/gm2/init/gm2minit:  added RTExceptions and M2EXCEPTION.
        * gm2/gm2/init/h2definit:  added RTExceptions and M2EXCEPTION.
        * gm2/gm2/init/ppginit:  added RTExceptions and M2EXCEPTION.
        * gm2/gm2/p2c/p2c-src/src/lex.c:  introduced __COLUMN__ to
          p2c.