forked from KolibriOS/kolibrios
1299 lines
32 KiB
Plaintext
1299 lines
32 KiB
Plaintext
(*
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BSD 2-Clause License
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Copyright (c) 2018-2020, Anton Krotov
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All rights reserved.
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*)
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MODULE PROG;
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IMPORT SCAN, LISTS, ARITH, ERRORS, C := COLLECTIONS, IL, UTILS, TARGETS, STRINGS;
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CONST
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MAXARRDIM* = 5;
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MAXSCOPE = 16;
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MAXSYSVPARAM* = 26;
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idNONE* = 0; idGUARD = 1; idMODULE* = 2; idCONST* = 3;
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idTYPE* = 4; idSTFUNC* = 5; idSTPROC* = 6; idVAR* = 7;
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idPROC* = 8; idVPAR* = 9; idPARAM* = 10; idSYSFUNC* = 11;
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idSYSPROC* = 12; idIMP* = 13;
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tINTEGER* = 1; tBYTE* = 2; tCHAR* = 3; tSET* = 4;
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tBOOLEAN* = 5; tREAL* = 6; tARRAY* = 7; tRECORD* = 8;
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tPOINTER* = 9; tPROCEDURE* = 10; tSTRING* = 11; tNIL* = 12;
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tCARD32* = 13; tANYREC* = 14; tWCHAR* = 15; tNONE* = 16;
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BASICTYPES* = {tINTEGER, tBYTE, tCHAR, tSET, tBOOLEAN, tREAL, tCARD32, tWCHAR};
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stABS* = 1; stASR* = 2; stCHR* = 3; stFLOOR* = 4;
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stFLT* = 5; stLEN* = 6; stLSL* = 7; stODD* = 8;
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stORD* = 9; stROR* = 10; stASSERT* = 11; stDEC* = 12;
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stEXCL* = 13; stINC* = 14; stINCL* = 15; stNEW* = 16;
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stPACK* = 17; stUNPK* = 18; sysADR* = 19; sysSIZE* = 20;
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sysGET* = 21; sysPUT* = 22;
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stDISPOSE* = 23; stLSR* = 24; stBITS* = 25; sysCODE* = 26;
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sysMOVE* = 27; stLENGTH* = 28; stMIN* = 29; stMAX* = 30;
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sysSADR* = 31; sysTYPEID* = 32; sysCOPY* = 33; sysINF* = 34;
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sysPUT8* = 35; sysPUT16* = 36; stCOPY* = 37; stWCHR* = 38;
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sysWSADR* = 39; sysPUT32* = 40; (*sysNOP* = 41; sysEINT* = 42;
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sysDINT* = 43;*)sysGET8* = 44; sysGET16* = 45; sysGET32* = 46;
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default32* = 2; _default32* = default32 + 1;
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stdcall* = 4; _stdcall* = stdcall + 1;
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ccall* = 6; _ccall* = ccall + 1;
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ccall16* = 8; _ccall16* = ccall16 + 1;
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win64* = 10; _win64* = win64 + 1;
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stdcall64* = 12; _stdcall64* = stdcall64 + 1;
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default64* = 14; _default64* = default64 + 1;
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systemv* = 16; _systemv* = systemv + 1;
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default16* = 18;
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code* = 20; _code* = code + 1;
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noalign* = 22;
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callee_clean_up* = {default32, stdcall, _stdcall, default64, stdcall64, _stdcall64};
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sf_stdcall* = 0; sf_stdcall64* = 1; sf_ccall* = 2; sf_ccall16* = 3;
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sf_win64* = 4; sf_systemv* = 5; sf_windows* = 6; sf_linux* = 7;
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sf_code* = 8; sf_oberon* = 9;
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sf_noalign* = 10;
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proc_flags* = {sf_stdcall, sf_stdcall64, sf_ccall, sf_ccall16, sf_win64, sf_systemv, sf_windows, sf_linux, sf_code, sf_oberon};
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rec_flags* = {sf_noalign};
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STACK_FRAME = 2;
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TYPE
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OPTIONS* = RECORD
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version*, stack*, ram*, rom*: INTEGER;
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pic*, lower*: BOOLEAN;
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checking*: SET
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END;
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IDENT* = POINTER TO rIDENT;
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UNIT* = POINTER TO rUNIT;
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_TYPE* = POINTER TO rTYPE;
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FRWPTR* = POINTER TO RECORD (LISTS.ITEM)
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_type: _TYPE;
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baseIdent: SCAN.IDENT;
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linked: BOOLEAN;
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pos*: SCAN.POSITION;
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notRecord*: BOOLEAN
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END;
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PROC* = POINTER TO RECORD (LISTS.ITEM)
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label*: INTEGER;
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used*: BOOLEAN;
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processed*: BOOLEAN;
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_import*: LISTS.ITEM;
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using*: LISTS.LIST;
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enter*,
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leave*: LISTS.ITEM
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END;
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USED_PROC = POINTER TO RECORD (LISTS.ITEM)
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proc: PROC
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END;
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rUNIT = RECORD (LISTS.ITEM)
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name*: SCAN.IDENT;
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idents*: LISTS.LIST;
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frwPointers: LISTS.LIST;
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gscope: IDENT;
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closed*: BOOLEAN;
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scopeLvl*: INTEGER;
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sysimport*: BOOLEAN;
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scopes*: ARRAY MAXSCOPE OF PROC
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END;
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FIELD* = POINTER TO rFIELD;
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PARAM* = POINTER TO rPARAM;
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rTYPE = RECORD (LISTS.ITEM)
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typ*: INTEGER;
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size*: INTEGER;
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parSize*: INTEGER;
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length*: INTEGER;
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align*: INTEGER;
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base*: _TYPE;
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fields*: LISTS.LIST;
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params*: LISTS.LIST;
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unit*: UNIT;
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closed*: BOOLEAN;
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num*: INTEGER;
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call*: INTEGER;
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_import*: BOOLEAN;
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noalign*: BOOLEAN
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END;
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rFIELD = RECORD (LISTS.ITEM)
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_type*: _TYPE;
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name*: SCAN.IDENT;
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export*: BOOLEAN;
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offset*: INTEGER
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END;
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rPARAM = RECORD (LISTS.ITEM)
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name*: SCAN.IDENT;
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_type*: _TYPE;
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vPar*: BOOLEAN;
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offset*: INTEGER
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END;
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rIDENT = RECORD (LISTS.ITEM)
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name*: SCAN.IDENT;
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typ*: INTEGER;
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export*: BOOLEAN;
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_import*: LISTS.ITEM;
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unit*: UNIT;
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value*: ARITH.VALUE;
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_type*: _TYPE;
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stproc*: INTEGER;
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global*: BOOLEAN;
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scopeLvl*: INTEGER;
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offset*: INTEGER;
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proc*: PROC;
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pos*: SCAN.POSITION
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END;
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PROGRAM = RECORD
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recCount: INTEGER;
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units*: LISTS.LIST;
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types*: LISTS.LIST;
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sysunit*: UNIT;
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rtl*: UNIT;
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bss*: INTEGER;
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locsize*: INTEGER;
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procs*: LISTS.LIST;
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sysflags*: SET;
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options*: OPTIONS;
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stTypes*: RECORD
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tINTEGER*, tBYTE*, tCHAR*, tWCHAR*, tSET*, tBOOLEAN*, tREAL*,
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tSTRING*, tNIL*, tCARD32*, tANYREC*, tNONE*: _TYPE
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END
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END;
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DELIMPORT = PROCEDURE (_import: LISTS.ITEM);
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VAR
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LowerCase: BOOLEAN;
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idents: C.COLLECTION;
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program*: PROGRAM;
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PROCEDURE NewIdent (): IDENT;
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VAR
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ident: IDENT;
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citem: C.ITEM;
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BEGIN
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citem := C.pop(idents);
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IF citem = NIL THEN
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NEW(ident)
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ELSE
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ident := citem(IDENT)
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END
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RETURN ident
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END NewIdent;
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PROCEDURE getOffset* (varIdent: IDENT): INTEGER;
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VAR
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size: INTEGER;
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BEGIN
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IF varIdent.offset = -1 THEN
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size := varIdent._type.size;
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IF varIdent.global THEN
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IF UTILS.Align(program.bss, varIdent._type.align) THEN
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IF UTILS.maxint - program.bss >= size THEN
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varIdent.offset := program.bss;
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INC(program.bss, size)
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END
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END
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ELSE
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IF UTILS.Align(size, TARGETS.WordSize) THEN
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size := size DIV TARGETS.WordSize;
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IF UTILS.maxint - program.locsize >= size THEN
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INC(program.locsize, size);
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varIdent.offset := program.locsize
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END
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END
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END;
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IF varIdent.offset = -1 THEN
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ERRORS.Error(204)
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END
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END
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RETURN varIdent.offset
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END getOffset;
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PROCEDURE closeUnit* (unit: UNIT);
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VAR
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ident, prev: IDENT;
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offset: INTEGER;
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BEGIN
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ident := unit.idents.last(IDENT);
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WHILE (ident # NIL) & (ident.typ # idGUARD) DO
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IF (ident.typ = idVAR) & (ident.offset = -1) THEN
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ERRORS.HintMsg(ident.name.s, ident.pos.line, ident.pos.col, 0);
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IF ident.export THEN
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offset := getOffset(ident)
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END
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END;
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ident := ident.prev(IDENT)
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END;
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ident := unit.idents.last(IDENT);
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WHILE ident # NIL DO
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prev := ident.prev(IDENT);
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IF ~ident.export THEN
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LISTS.delete(unit.idents, ident);
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C.push(idents, ident)
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END;
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ident := prev
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END;
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unit.closed := TRUE
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END closeUnit;
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PROCEDURE unique (unit: UNIT; ident: SCAN.IDENT): BOOLEAN;
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VAR
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item: IDENT;
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BEGIN
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ASSERT(ident # NIL);
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item := unit.idents.last(IDENT);
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WHILE (item.typ # idGUARD) & (item.name # ident) DO
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item := item.prev(IDENT)
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END
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RETURN item.typ = idGUARD
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END unique;
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PROCEDURE addIdent* (unit: UNIT; ident: SCAN.IDENT; typ: INTEGER): IDENT;
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VAR
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item: IDENT;
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res: BOOLEAN;
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proc: PROC;
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BEGIN
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ASSERT(unit # NIL);
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ASSERT(ident # NIL);
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res := unique(unit, ident);
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IF res THEN
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item := NewIdent();
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item.name := ident;
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item.typ := typ;
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item.unit := NIL;
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item.export := FALSE;
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item._import := NIL;
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item._type := NIL;
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item.value.typ := 0;
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item.stproc := 0;
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item.global := unit.scopeLvl = 0;
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item.scopeLvl := unit.scopeLvl;
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item.offset := -1;
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IF item.typ IN {idPROC, idIMP} THEN
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NEW(proc);
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proc._import := NIL;
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proc.label := 0;
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proc.used := FALSE;
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proc.processed := FALSE;
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proc.using := LISTS.create(NIL);
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LISTS.push(program.procs, proc);
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item.proc := proc
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END;
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LISTS.push(unit.idents, item)
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ELSE
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item := NIL
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END
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RETURN item
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END addIdent;
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PROCEDURE UseProc* (unit: UNIT; call_proc: PROC);
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VAR
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procs: LISTS.LIST;
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cur: LISTS.ITEM;
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proc: USED_PROC;
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BEGIN
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IF unit.scopeLvl = 0 THEN
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call_proc.used := TRUE
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ELSE
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procs := unit.scopes[unit.scopeLvl].using;
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cur := procs.first;
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WHILE (cur # NIL) & (cur(USED_PROC).proc # call_proc) DO
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cur := cur.next
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END;
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IF cur = NIL THEN
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NEW(proc);
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proc.proc := call_proc;
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LISTS.push(procs, proc)
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END
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END
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END UseProc;
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PROCEDURE setVarsType* (unit: UNIT; _type: _TYPE);
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VAR
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item: IDENT;
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BEGIN
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ASSERT(_type # NIL);
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item := unit.idents.last(IDENT);
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WHILE (item # NIL) & (item.typ = idVAR) & (item._type = NIL) DO
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item._type := _type;
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item := item.prev(IDENT)
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END
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END setVarsType;
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PROCEDURE getIdent* (unit: UNIT; ident: SCAN.IDENT; currentScope: BOOLEAN): IDENT;
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VAR
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item: IDENT;
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BEGIN
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ASSERT(ident # NIL);
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item := unit.idents.last(IDENT);
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IF item # NIL THEN
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IF currentScope THEN
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WHILE (item.name # ident) & (item.typ # idGUARD) DO
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item := item.prev(IDENT)
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END;
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IF item.name # ident THEN
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item := NIL
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END
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ELSE
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WHILE (item # NIL) & (item.name # ident) DO
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item := item.prev(IDENT)
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END
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END
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END
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RETURN item
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END getIdent;
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PROCEDURE openScope* (unit: UNIT; proc: PROC): BOOLEAN;
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VAR
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item: IDENT;
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res: BOOLEAN;
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BEGIN
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INC(unit.scopeLvl);
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res := unit.scopeLvl < MAXSCOPE;
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IF res THEN
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unit.scopes[unit.scopeLvl] := proc;
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NEW(item);
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item := NewIdent();
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item.name := NIL;
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item.typ := idGUARD;
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LISTS.push(unit.idents, item)
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END
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RETURN res
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END openScope;
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PROCEDURE closeScope* (unit: UNIT; variables: LISTS.LIST);
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VAR
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item: IDENT;
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del: IDENT;
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lvar: IL.LOCALVAR;
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BEGIN
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item := unit.idents.last(IDENT);
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WHILE (item # NIL) & (item.typ # idGUARD) DO
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del := item;
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item := item.prev(IDENT);
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IF (del.typ = idVAR) & (del.offset = -1) THEN
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ERRORS.HintMsg(del.name.s, del.pos.line, del.pos.col, 0)
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END;
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IF (variables # NIL) & (del.typ IN {idVAR, idPARAM}) & (del.offset # -1) THEN
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IF del._type.typ IN BASICTYPES - {tREAL} + {tPOINTER, tPROCEDURE} THEN
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lvar := IL.NewVar();
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lvar.offset := del.offset;
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lvar.size := del._type.size;
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IF del.typ = idVAR THEN
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lvar.offset := -lvar.offset
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END;
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LISTS.push(variables, lvar)
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END
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END;
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LISTS.delete(unit.idents, del);
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C.push(idents, del)
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END;
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IF (item # NIL) & (item.typ = idGUARD) THEN
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LISTS.delete(unit.idents, item);
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C.push(idents, item)
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END;
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DEC(unit.scopeLvl)
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END closeScope;
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PROCEDURE frwPtr* (unit: UNIT; _type: _TYPE; baseIdent: SCAN.IDENT; pos: SCAN.POSITION);
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VAR
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newptr: FRWPTR;
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BEGIN
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ASSERT(unit # NIL);
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ASSERT(_type # NIL);
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ASSERT(baseIdent # NIL);
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NEW(newptr);
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newptr._type := _type;
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newptr.baseIdent := baseIdent;
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newptr.pos := pos;
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newptr.linked := FALSE;
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newptr.notRecord := FALSE;
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LISTS.push(unit.frwPointers, newptr)
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END frwPtr;
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PROCEDURE linkPtr* (unit: UNIT): FRWPTR;
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VAR
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item: FRWPTR;
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ident: IDENT;
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res: FRWPTR;
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BEGIN
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res := NIL;
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item := unit.frwPointers.last(FRWPTR);
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WHILE (item # NIL) & ~item.linked & (res = NIL) DO
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ident := getIdent(unit, item.baseIdent, TRUE);
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IF (ident # NIL) THEN
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IF (ident.typ = idTYPE) & (ident._type.typ = tRECORD) THEN
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item._type.base := ident._type;
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item.linked := TRUE
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ELSE
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item.notRecord := TRUE;
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res := item
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END
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ELSE
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item.notRecord := FALSE;
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res := item
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END;
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item := item.prev(FRWPTR)
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END
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RETURN res
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END linkPtr;
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PROCEDURE isTypeEq* (t1, t2: _TYPE): BOOLEAN;
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VAR
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res: BOOLEAN;
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param1, param2: LISTS.ITEM;
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BEGIN
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IF t1 = t2 THEN
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res := TRUE
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ELSIF (t1 = NIL) OR (t2 = NIL) THEN
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res := FALSE
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ELSIF (t1.typ = tPROCEDURE) & (t2.typ = tPROCEDURE) THEN
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param1 := t1.params.first;
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param2 := t2.params.first;
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res := ((t1.call = t2.call) OR (t1.call IN {code, _code}) OR (t2.call IN {code, _code})) & ((param1 # NIL) = (param2 # NIL));
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WHILE res & (param1 # NIL) & (param2 # NIL) DO
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res := (param1(PARAM).vPar = param2(PARAM).vPar) & isTypeEq(param1(PARAM)._type, param2(PARAM)._type);
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|
param1 := param1.next;
|
|
param2 := param2.next;
|
|
res := res & ((param1 # NIL) = (param2 # NIL))
|
|
END;
|
|
|
|
res := res & isTypeEq(t1.base, t2.base)
|
|
|
|
ELSIF (t1.typ = tARRAY) & (t2.typ = tARRAY) THEN
|
|
res := (t1.length = 0) & (t2.length = 0) & isTypeEq(t1.base, t2.base)
|
|
ELSE
|
|
res := FALSE
|
|
END
|
|
|
|
RETURN res
|
|
END isTypeEq;
|
|
|
|
|
|
PROCEDURE isBaseOf* (t0, t1: _TYPE): BOOLEAN;
|
|
VAR
|
|
res: BOOLEAN;
|
|
|
|
BEGIN
|
|
res := (t0.typ = t1.typ) & (t0.typ IN {tPOINTER, tRECORD});
|
|
|
|
IF res & (t0.typ = tPOINTER) THEN
|
|
t0 := t0.base;
|
|
t1 := t1.base
|
|
END;
|
|
|
|
IF res THEN
|
|
WHILE (t1 # NIL) & (t1 # t0) DO
|
|
t1 := t1.base
|
|
END;
|
|
res := t1 # NIL
|
|
END
|
|
|
|
RETURN res
|
|
END isBaseOf;
|
|
|
|
|
|
PROCEDURE isOpenArray* (t: _TYPE): BOOLEAN;
|
|
RETURN (t.typ = tARRAY) & (t.length = 0)
|
|
END isOpenArray;
|
|
|
|
|
|
PROCEDURE arrcomp* (src, dst: _TYPE): BOOLEAN;
|
|
RETURN (dst.typ = tARRAY) & isOpenArray(src) &
|
|
~isOpenArray(src.base) & ~isOpenArray(dst.base) &
|
|
isTypeEq(src.base, dst.base)
|
|
END arrcomp;
|
|
|
|
|
|
PROCEDURE getUnit* (name: SCAN.IDENT): UNIT;
|
|
VAR
|
|
item: UNIT;
|
|
|
|
BEGIN
|
|
ASSERT(name # NIL);
|
|
|
|
item := program.units.first(UNIT);
|
|
|
|
WHILE (item # NIL) & (item.name # name) DO
|
|
item := item.next(UNIT)
|
|
END;
|
|
|
|
IF (item = NIL) & ((name.s = "SYSTEM") OR LowerCase & (name.s = "system")) THEN
|
|
item := program.sysunit
|
|
END
|
|
|
|
RETURN item
|
|
END getUnit;
|
|
|
|
|
|
PROCEDURE enterStTypes (unit: UNIT);
|
|
|
|
|
|
PROCEDURE enter (unit: UNIT; name: SCAN.LEXSTR; _type: _TYPE);
|
|
VAR
|
|
ident: IDENT;
|
|
upper: SCAN.LEXSTR;
|
|
|
|
BEGIN
|
|
IF LowerCase THEN
|
|
ident := addIdent(unit, SCAN.enterid(name), idTYPE);
|
|
ident._type := _type
|
|
END;
|
|
upper := name;
|
|
STRINGS.UpCase(upper);
|
|
ident := addIdent(unit, SCAN.enterid(upper), idTYPE);
|
|
ident._type := _type
|
|
END enter;
|
|
|
|
|
|
BEGIN
|
|
enter(unit, "integer", program.stTypes.tINTEGER);
|
|
enter(unit, "byte", program.stTypes.tBYTE);
|
|
enter(unit, "char", program.stTypes.tCHAR);
|
|
enter(unit, "set", program.stTypes.tSET);
|
|
enter(unit, "boolean", program.stTypes.tBOOLEAN);
|
|
|
|
IF TARGETS.RealSize # 0 THEN
|
|
enter(unit, "real", program.stTypes.tREAL)
|
|
END;
|
|
|
|
IF TARGETS.BitDepth >= 32 THEN
|
|
enter(unit, "wchar", program.stTypes.tWCHAR)
|
|
END
|
|
END enterStTypes;
|
|
|
|
|
|
PROCEDURE enterStProcs (unit: UNIT);
|
|
|
|
|
|
PROCEDURE EnterProc (unit: UNIT; name: SCAN.LEXSTR; proc: INTEGER);
|
|
VAR
|
|
ident: IDENT;
|
|
upper: SCAN.LEXSTR;
|
|
|
|
BEGIN
|
|
IF LowerCase THEN
|
|
ident := addIdent(unit, SCAN.enterid(name), idSTPROC);
|
|
ident.stproc := proc;
|
|
ident._type := program.stTypes.tNONE
|
|
END;
|
|
upper := name;
|
|
STRINGS.UpCase(upper);
|
|
ident := addIdent(unit, SCAN.enterid(upper), idSTPROC);
|
|
ident.stproc := proc;
|
|
ident._type := program.stTypes.tNONE
|
|
END EnterProc;
|
|
|
|
|
|
PROCEDURE EnterFunc (unit: UNIT; name: SCAN.LEXSTR; func: INTEGER);
|
|
VAR
|
|
ident: IDENT;
|
|
upper: SCAN.LEXSTR;
|
|
|
|
BEGIN
|
|
IF LowerCase THEN
|
|
ident := addIdent(unit, SCAN.enterid(name), idSTFUNC);
|
|
ident.stproc := func;
|
|
ident._type := program.stTypes.tNONE
|
|
END;
|
|
upper := name;
|
|
STRINGS.UpCase(upper);
|
|
ident := addIdent(unit, SCAN.enterid(upper), idSTFUNC);
|
|
ident.stproc := func;
|
|
ident._type := program.stTypes.tNONE
|
|
END EnterFunc;
|
|
|
|
|
|
BEGIN
|
|
EnterProc(unit, "assert", stASSERT);
|
|
EnterProc(unit, "dec", stDEC);
|
|
EnterProc(unit, "excl", stEXCL);
|
|
EnterProc(unit, "inc", stINC);
|
|
EnterProc(unit, "incl", stINCL);
|
|
EnterProc(unit, "new", stNEW);
|
|
EnterProc(unit, "copy", stCOPY);
|
|
|
|
EnterFunc(unit, "abs", stABS);
|
|
EnterFunc(unit, "asr", stASR);
|
|
EnterFunc(unit, "chr", stCHR);
|
|
EnterFunc(unit, "len", stLEN);
|
|
EnterFunc(unit, "lsl", stLSL);
|
|
EnterFunc(unit, "odd", stODD);
|
|
EnterFunc(unit, "ord", stORD);
|
|
EnterFunc(unit, "ror", stROR);
|
|
EnterFunc(unit, "bits", stBITS);
|
|
EnterFunc(unit, "lsr", stLSR);
|
|
EnterFunc(unit, "length", stLENGTH);
|
|
EnterFunc(unit, "min", stMIN);
|
|
EnterFunc(unit, "max", stMAX);
|
|
|
|
IF TARGETS.RealSize # 0 THEN
|
|
EnterProc(unit, "pack", stPACK);
|
|
EnterProc(unit, "unpk", stUNPK);
|
|
EnterFunc(unit, "floor", stFLOOR);
|
|
EnterFunc(unit, "flt", stFLT)
|
|
END;
|
|
|
|
IF TARGETS.BitDepth >= 32 THEN
|
|
EnterFunc(unit, "wchr", stWCHR)
|
|
END;
|
|
|
|
IF TARGETS.Dispose THEN
|
|
EnterProc(unit, "dispose", stDISPOSE)
|
|
END
|
|
|
|
END enterStProcs;
|
|
|
|
|
|
PROCEDURE newUnit* (name: SCAN.IDENT): UNIT;
|
|
VAR
|
|
unit: UNIT;
|
|
|
|
BEGIN
|
|
ASSERT(name # NIL);
|
|
|
|
NEW(unit);
|
|
|
|
unit.name := name;
|
|
unit.closed := FALSE;
|
|
unit.idents := LISTS.create(NIL);
|
|
unit.frwPointers := LISTS.create(NIL);
|
|
|
|
ASSERT(openScope(unit, NIL));
|
|
|
|
enterStTypes(unit);
|
|
enterStProcs(unit);
|
|
|
|
ASSERT(openScope(unit, NIL));
|
|
|
|
unit.gscope := unit.idents.last(IDENT);
|
|
|
|
LISTS.push(program.units, unit);
|
|
|
|
unit.scopeLvl := 0;
|
|
unit.scopes[0] := NIL;
|
|
|
|
unit.sysimport := FALSE;
|
|
|
|
IF unit.name.s = UTILS.RTL_NAME THEN
|
|
program.rtl := unit
|
|
END
|
|
|
|
RETURN unit
|
|
END newUnit;
|
|
|
|
|
|
PROCEDURE getField* (self: _TYPE; name: SCAN.IDENT; unit: UNIT): FIELD;
|
|
VAR
|
|
field: FIELD;
|
|
|
|
BEGIN
|
|
ASSERT(self # NIL);
|
|
ASSERT(name # NIL);
|
|
ASSERT(unit # NIL);
|
|
|
|
field := NIL;
|
|
WHILE (self # NIL) & (field = NIL) DO
|
|
|
|
field := self.fields.first(FIELD);
|
|
|
|
WHILE (field # NIL) & (field.name # name) DO
|
|
field := field.next(FIELD)
|
|
END;
|
|
|
|
IF field = NIL THEN
|
|
self := self.base
|
|
END
|
|
|
|
END;
|
|
|
|
IF (field # NIL) & (self.unit # unit) & ~field.export THEN
|
|
field := NIL
|
|
END
|
|
|
|
RETURN field
|
|
END getField;
|
|
|
|
|
|
PROCEDURE addField* (self: _TYPE; name: SCAN.IDENT; export: BOOLEAN): BOOLEAN;
|
|
VAR
|
|
field: FIELD;
|
|
res: BOOLEAN;
|
|
|
|
BEGIN
|
|
ASSERT(name # NIL);
|
|
|
|
res := getField(self, name, self.unit) = NIL;
|
|
|
|
IF res THEN
|
|
NEW(field);
|
|
|
|
field.name := name;
|
|
field.export := export;
|
|
field._type := NIL;
|
|
field.offset := self.size;
|
|
|
|
LISTS.push(self.fields, field)
|
|
END
|
|
|
|
RETURN res
|
|
END addField;
|
|
|
|
|
|
PROCEDURE setFields* (self: _TYPE; _type: _TYPE): BOOLEAN;
|
|
VAR
|
|
item: FIELD;
|
|
res: BOOLEAN;
|
|
|
|
BEGIN
|
|
ASSERT(_type # NIL);
|
|
|
|
item := self.fields.first(FIELD);
|
|
|
|
WHILE (item # NIL) & (item._type # NIL) DO
|
|
item := item.next(FIELD)
|
|
END;
|
|
|
|
res := TRUE;
|
|
|
|
WHILE res & (item # NIL) & (item._type = NIL) DO
|
|
item._type := _type;
|
|
IF ~self.noalign THEN
|
|
res := UTILS.Align(self.size, _type.align)
|
|
ELSE
|
|
res := TRUE
|
|
END;
|
|
item.offset := self.size;
|
|
res := res & (UTILS.maxint - self.size >= _type.size);
|
|
IF res THEN
|
|
INC(self.size, _type.size)
|
|
END;
|
|
item := item.next(FIELD)
|
|
END
|
|
|
|
RETURN res
|
|
END setFields;
|
|
|
|
|
|
PROCEDURE getParam* (self: _TYPE; name: SCAN.IDENT): PARAM;
|
|
VAR
|
|
item: PARAM;
|
|
|
|
BEGIN
|
|
ASSERT(name # NIL);
|
|
|
|
item := self.params.first(PARAM);
|
|
|
|
WHILE (item # NIL) & (item.name # name) DO
|
|
item := item.next(PARAM)
|
|
END
|
|
|
|
RETURN item
|
|
END getParam;
|
|
|
|
|
|
PROCEDURE addParam* (self: _TYPE; name: SCAN.IDENT; vPar: BOOLEAN): BOOLEAN;
|
|
VAR
|
|
param: PARAM;
|
|
res: BOOLEAN;
|
|
|
|
BEGIN
|
|
ASSERT(name # NIL);
|
|
|
|
res := getParam(self, name) = NIL;
|
|
|
|
IF res THEN
|
|
NEW(param);
|
|
|
|
param.name := name;
|
|
param._type := NIL;
|
|
param.vPar := vPar;
|
|
|
|
LISTS.push(self.params, param)
|
|
END
|
|
|
|
RETURN res
|
|
END addParam;
|
|
|
|
|
|
PROCEDURE Dim* (t: _TYPE): INTEGER;
|
|
VAR
|
|
res: INTEGER;
|
|
|
|
BEGIN
|
|
res := 0;
|
|
WHILE isOpenArray(t) DO
|
|
t := t.base;
|
|
INC(res)
|
|
END
|
|
RETURN res
|
|
END Dim;
|
|
|
|
|
|
PROCEDURE OpenBase* (t: _TYPE): _TYPE;
|
|
BEGIN
|
|
WHILE isOpenArray(t) DO t := t.base END
|
|
RETURN t
|
|
END OpenBase;
|
|
|
|
|
|
PROCEDURE getFloatParamsPos* (self: _TYPE; maxoffs: INTEGER; VAR int, flt: INTEGER): SET;
|
|
VAR
|
|
res: SET;
|
|
param: PARAM;
|
|
|
|
BEGIN
|
|
res := {};
|
|
int := 0;
|
|
flt := 0;
|
|
param := self.params.first(PARAM);
|
|
WHILE (param # NIL) & (param.offset <= maxoffs + STACK_FRAME) DO
|
|
IF ~param.vPar & (param._type.typ = tREAL) THEN
|
|
INCL(res, param.offset - STACK_FRAME);
|
|
INC(flt)
|
|
END;
|
|
param := param.next(PARAM)
|
|
END;
|
|
|
|
int := self.parSize - flt
|
|
|
|
RETURN res
|
|
END getFloatParamsPos;
|
|
|
|
|
|
PROCEDURE setParams* (self: _TYPE; _type: _TYPE);
|
|
VAR
|
|
item: LISTS.ITEM;
|
|
param: PARAM;
|
|
word, size: INTEGER;
|
|
|
|
BEGIN
|
|
ASSERT(_type # NIL);
|
|
|
|
word := UTILS.target.bit_depth DIV 8;
|
|
|
|
item := self.params.first;
|
|
|
|
WHILE (item # NIL) & (item(PARAM)._type # NIL) DO
|
|
item := item.next
|
|
END;
|
|
|
|
WHILE (item # NIL) & (item(PARAM)._type = NIL) DO
|
|
param := item(PARAM);
|
|
param._type := _type;
|
|
IF param.vPar THEN
|
|
IF _type.typ = tRECORD THEN
|
|
size := 2
|
|
ELSIF isOpenArray(_type) THEN
|
|
size := Dim(_type) + 1
|
|
ELSE
|
|
size := 1
|
|
END;
|
|
param.offset := self.parSize + ORD(_type.typ = tRECORD) + Dim(_type) + STACK_FRAME;
|
|
INC(self.parSize, size)
|
|
ELSE
|
|
IF _type.typ IN {tRECORD, tARRAY} THEN
|
|
IF isOpenArray(_type) THEN
|
|
size := Dim(_type) + 1
|
|
ELSE
|
|
size := 1
|
|
END
|
|
ELSE
|
|
size := _type.size;
|
|
ASSERT(UTILS.Align(size, word));
|
|
size := size DIV word
|
|
END;
|
|
param.offset := self.parSize + Dim(_type) + STACK_FRAME;
|
|
INC(self.parSize, size)
|
|
END;
|
|
|
|
item := item.next
|
|
END
|
|
|
|
END setParams;
|
|
|
|
|
|
PROCEDURE enterType* (typ, size, length: INTEGER; unit: UNIT): _TYPE;
|
|
VAR
|
|
t: _TYPE;
|
|
|
|
BEGIN
|
|
NEW(t);
|
|
|
|
t.typ := typ;
|
|
t.size := size;
|
|
t.length := length;
|
|
t.align := 0;
|
|
t.base := NIL;
|
|
t.fields := LISTS.create(NIL);
|
|
t.params := LISTS.create(NIL);
|
|
t.unit := unit;
|
|
t.num := 0;
|
|
|
|
CASE TARGETS.BitDepth OF
|
|
|16: t.call := default16
|
|
|32: t.call := default32
|
|
|64: t.call := default64
|
|
END;
|
|
|
|
t._import := FALSE;
|
|
t.noalign := FALSE;
|
|
t.parSize := 0;
|
|
|
|
IF typ IN {tARRAY, tRECORD} THEN
|
|
t.closed := FALSE;
|
|
IF typ = tRECORD THEN
|
|
INC(program.recCount);
|
|
t.num := program.recCount
|
|
END
|
|
ELSE
|
|
t.closed := TRUE
|
|
END;
|
|
|
|
LISTS.push(program.types, t)
|
|
|
|
RETURN t
|
|
END enterType;
|
|
|
|
|
|
PROCEDURE getType* (typ: INTEGER): _TYPE;
|
|
VAR
|
|
res: _TYPE;
|
|
|
|
BEGIN
|
|
|
|
CASE typ OF
|
|
|ARITH.tINTEGER: res := program.stTypes.tINTEGER
|
|
|ARITH.tREAL: res := program.stTypes.tREAL
|
|
|ARITH.tSET: res := program.stTypes.tSET
|
|
|ARITH.tBOOLEAN: res := program.stTypes.tBOOLEAN
|
|
|ARITH.tCHAR: res := program.stTypes.tCHAR
|
|
|ARITH.tWCHAR: res := program.stTypes.tWCHAR
|
|
|ARITH.tSTRING: res := program.stTypes.tSTRING
|
|
END
|
|
|
|
RETURN res
|
|
END getType;
|
|
|
|
|
|
PROCEDURE createSysUnit;
|
|
VAR
|
|
ident: IDENT;
|
|
unit: UNIT;
|
|
|
|
|
|
PROCEDURE EnterProc (sys: UNIT; name: SCAN.LEXSTR; idtyp, proc: INTEGER);
|
|
VAR
|
|
ident: IDENT;
|
|
upper: SCAN.LEXSTR;
|
|
|
|
BEGIN
|
|
IF LowerCase THEN
|
|
ident := addIdent(sys, SCAN.enterid(name), idtyp);
|
|
ident.stproc := proc;
|
|
ident._type := program.stTypes.tNONE;
|
|
ident.export := TRUE
|
|
END;
|
|
upper := name;
|
|
STRINGS.UpCase(upper);
|
|
ident := addIdent(sys, SCAN.enterid(upper), idtyp);
|
|
ident.stproc := proc;
|
|
ident._type := program.stTypes.tNONE;
|
|
ident.export := TRUE
|
|
END EnterProc;
|
|
|
|
|
|
BEGIN
|
|
unit := newUnit(SCAN.enterid("$SYSTEM"));
|
|
|
|
EnterProc(unit, "adr", idSYSFUNC, sysADR);
|
|
EnterProc(unit, "size", idSYSFUNC, sysSIZE);
|
|
EnterProc(unit, "sadr", idSYSFUNC, sysSADR);
|
|
EnterProc(unit, "typeid", idSYSFUNC, sysTYPEID);
|
|
|
|
EnterProc(unit, "get", idSYSPROC, sysGET);
|
|
EnterProc(unit, "get8", idSYSPROC, sysGET8);
|
|
EnterProc(unit, "put", idSYSPROC, sysPUT);
|
|
EnterProc(unit, "put8", idSYSPROC, sysPUT8);
|
|
EnterProc(unit, "code", idSYSPROC, sysCODE);
|
|
EnterProc(unit, "move", idSYSPROC, sysMOVE);
|
|
(*
|
|
IF program.target.sys = mConst.Target_iMSP430 THEN
|
|
EnterProc(unit, "nop", idSYSPROC, sysNOP);
|
|
EnterProc(unit, "eint", idSYSPROC, sysEINT);
|
|
EnterProc(unit, "dint", idSYSPROC, sysDINT)
|
|
END;
|
|
*)
|
|
IF TARGETS.RealSize # 0 THEN
|
|
EnterProc(unit, "inf", idSYSFUNC, sysINF);
|
|
END;
|
|
|
|
IF TARGETS.CPU IN {TARGETS.cpuX86, TARGETS.cpuAMD64} THEN
|
|
EnterProc(unit, "copy", idSYSPROC, sysCOPY)
|
|
END;
|
|
|
|
IF TARGETS.BitDepth >= 32 THEN
|
|
EnterProc(unit, "wsadr", idSYSFUNC, sysWSADR);
|
|
EnterProc(unit, "put16", idSYSPROC, sysPUT16);
|
|
EnterProc(unit, "put32", idSYSPROC, sysPUT32);
|
|
EnterProc(unit, "get16", idSYSPROC, sysGET16);
|
|
EnterProc(unit, "get32", idSYSPROC, sysGET32);
|
|
|
|
IF LowerCase THEN
|
|
ident := addIdent(unit, SCAN.enterid("card32"), idTYPE);
|
|
ident._type := program.stTypes.tCARD32;
|
|
ident.export := TRUE
|
|
END;
|
|
ident := addIdent(unit, SCAN.enterid("CARD32"), idTYPE);
|
|
ident._type := program.stTypes.tCARD32;
|
|
ident.export := TRUE;
|
|
END;
|
|
|
|
closeUnit(unit);
|
|
|
|
program.sysunit := unit
|
|
END createSysUnit;
|
|
|
|
|
|
PROCEDURE DelUnused* (DelImport: DELIMPORT);
|
|
VAR
|
|
proc: PROC;
|
|
flag: BOOLEAN;
|
|
|
|
|
|
PROCEDURE process (proc: PROC);
|
|
VAR
|
|
used_proc: LISTS.ITEM;
|
|
|
|
BEGIN
|
|
proc.processed := TRUE;
|
|
|
|
used_proc := proc.using.first;
|
|
WHILE used_proc # NIL DO
|
|
used_proc(USED_PROC).proc.used := TRUE;
|
|
used_proc := used_proc.next
|
|
END
|
|
|
|
END process;
|
|
|
|
|
|
BEGIN
|
|
|
|
REPEAT
|
|
flag := FALSE;
|
|
proc := program.procs.first(PROC);
|
|
|
|
WHILE proc # NIL DO
|
|
IF proc.used & ~proc.processed THEN
|
|
process(proc);
|
|
flag := TRUE
|
|
END;
|
|
proc := proc.next(PROC)
|
|
END
|
|
|
|
UNTIL ~flag;
|
|
|
|
proc := program.procs.first(PROC);
|
|
|
|
WHILE proc # NIL DO
|
|
IF ~proc.used THEN
|
|
IF proc._import = NIL THEN
|
|
IL.delete2(proc.enter, proc.leave)
|
|
ELSE
|
|
DelImport(proc._import)
|
|
END
|
|
END;
|
|
proc := proc.next(PROC)
|
|
END
|
|
|
|
END DelUnused;
|
|
|
|
|
|
PROCEDURE ResetLocSize*;
|
|
BEGIN
|
|
program.locsize := 0
|
|
END ResetLocSize;
|
|
|
|
|
|
PROCEDURE create* (options: OPTIONS);
|
|
BEGIN
|
|
LowerCase := options.lower;
|
|
SCAN.init(options.lower);
|
|
idents := C.create();
|
|
|
|
UTILS.SetBitDepth(TARGETS.BitDepth, TARGETS.RealSize = 8);
|
|
|
|
program.options := options;
|
|
|
|
CASE TARGETS.OS OF
|
|
|TARGETS.osWIN32: program.sysflags := {sf_oberon, sf_windows, sf_stdcall, sf_ccall, sf_ccall16, sf_noalign}
|
|
|TARGETS.osLINUX32: program.sysflags := {sf_oberon, sf_linux, sf_stdcall, sf_ccall, sf_ccall16, sf_noalign}
|
|
|TARGETS.osKOS: program.sysflags := {sf_oberon, sf_stdcall, sf_ccall, sf_ccall16, sf_noalign}
|
|
|TARGETS.osWIN64: program.sysflags := {sf_oberon, sf_windows, sf_stdcall64, sf_win64, sf_systemv, sf_noalign}
|
|
|TARGETS.osLINUX64: program.sysflags := {sf_oberon, sf_linux, sf_stdcall64, sf_win64, sf_systemv, sf_noalign}
|
|
|TARGETS.osNONE: program.sysflags := {sf_code}
|
|
END;
|
|
|
|
program.recCount := -1;
|
|
program.bss := 0;
|
|
|
|
program.units := LISTS.create(NIL);
|
|
program.types := LISTS.create(NIL);
|
|
program.procs := LISTS.create(NIL);
|
|
|
|
program.stTypes.tINTEGER := enterType(tINTEGER, TARGETS.WordSize, 0, NIL);
|
|
program.stTypes.tBYTE := enterType(tBYTE, 1, 0, NIL);
|
|
program.stTypes.tCHAR := enterType(tCHAR, 1, 0, NIL);
|
|
program.stTypes.tSET := enterType(tSET, TARGETS.WordSize, 0, NIL);
|
|
program.stTypes.tBOOLEAN := enterType(tBOOLEAN, 1, 0, NIL);
|
|
|
|
program.stTypes.tINTEGER.align := TARGETS.WordSize;
|
|
program.stTypes.tBYTE.align := 1;
|
|
program.stTypes.tCHAR.align := 1;
|
|
program.stTypes.tSET.align := TARGETS.WordSize;
|
|
program.stTypes.tBOOLEAN.align := 1;
|
|
|
|
IF TARGETS.BitDepth >= 32 THEN
|
|
program.stTypes.tWCHAR := enterType(tWCHAR, 2, 0, NIL);
|
|
program.stTypes.tCARD32 := enterType(tCARD32, 4, 0, NIL);
|
|
program.stTypes.tWCHAR.align := 2;
|
|
program.stTypes.tCARD32.align := 4
|
|
END;
|
|
|
|
IF TARGETS.RealSize # 0 THEN
|
|
program.stTypes.tREAL := enterType(tREAL, TARGETS.RealSize, 0, NIL);
|
|
program.stTypes.tREAL.align := TARGETS.RealSize
|
|
END;
|
|
|
|
program.stTypes.tSTRING := enterType(tSTRING, TARGETS.WordSize, 0, NIL);
|
|
program.stTypes.tNIL := enterType(tNIL, TARGETS.WordSize, 0, NIL);
|
|
program.stTypes.tNONE := enterType(tNONE, 0, 0, NIL);
|
|
program.stTypes.tANYREC := enterType(tRECORD, 0, 0, NIL);
|
|
program.stTypes.tANYREC.closed := TRUE;
|
|
|
|
createSysUnit
|
|
END create;
|
|
|
|
|
|
END PROG. |