diff options
Diffstat (limited to 'asmif.c')
| -rw-r--r-- | asmif.c | 433 |
1 files changed, 433 insertions, 0 deletions
@@ -0,0 +1,433 @@ +/* asmif.c */ +/*****************************************************************************/ +/* AS-Portierung */ +/* */ +/* Befehle zur bedingten Assemblierung */ +/* */ +/* Historie: 15. 5.1996 Grundsteinlegung */ +/* */ +/*****************************************************************************/ + +#include "stdinc.h" +#include <string.h> +#include <ctype.h> + +#include "bpemu.h" +#include "chunks.h" +#include "strutil.h" +#include "asmdef.h" +#include "asmsub.h" +#include "asmpars.h" + +#include "asmif.h" + + +PIfSave FirstIfSave; +Boolean IfAsm; /* FALSE: in einer neg. IF-Sequenz-->kein Code */ + +static Boolean ActiveIF; + + static LongInt GetIfVal(char *Cond) +BEGIN + Boolean IfOK; + LongInt Tmp; + + FirstPassUnknown=False; + Tmp=EvalIntExpression(Cond,Int32,&IfOK); + if ((FirstPassUnknown) OR (NOT IfOK)) + BEGIN + Tmp=1; + if (FirstPassUnknown) WrError(1820); + else if (NOT IfOK) WrError(1135); + END + + return Tmp; +END + + + static void AddBoolFlag(Boolean Flag) +BEGIN + strmaxcpy(ListLine,Flag?"=>TRUE":"=>FALSE",255); +END + + + static void PushIF(LongInt IfExpr) +BEGIN + PIfSave NewSave; + + NewSave=(PIfSave) malloc(sizeof(TIfSave)); + NewSave->NestLevel=SaveIFs()+1; + NewSave->Next=FirstIfSave; NewSave->SaveIfAsm=IfAsm; + NewSave->State=IfState_IFIF; NewSave->CaseFound=(IfExpr!=0); + FirstIfSave=NewSave; + IfAsm=(IfAsm AND (IfExpr!=0)); +END + + + static void CodeIF(void) +BEGIN + LongInt IfExpr; + + ActiveIF=IfAsm; + + if (NOT IfAsm) IfExpr=1; + else if (ArgCnt!=1) + BEGIN + WrError(1110); IfExpr=1; + END + else IfExpr=GetIfVal(ArgStr[1]); + if (IfAsm) AddBoolFlag(IfExpr!=0); + PushIF(IfExpr); +END + + + static void CodeIFDEF(void) +BEGIN + LongInt IfExpr; + Boolean Defined; + + ActiveIF=IfAsm; + + if (NOT IfAsm) IfExpr=1; + else if (ArgCnt!=1) + BEGIN + WrError(1110); IfExpr=1; + END + else + BEGIN + Defined=IsSymbolDefined(ArgStr[1]); + if (IfAsm) + strmaxcpy(ListLine,(Defined)?"=>DEFINED":"=>UNDEFINED",255); + if (Memo("IFDEF")) IfExpr=(Defined)?1:0; + else IfExpr=(Defined)?0:1; + END + PushIF(IfExpr); +END + + + static void CodeIFUSED(void) +BEGIN + LongInt IfExpr; + Boolean Used; + + ActiveIF=IfAsm; + + if (NOT IfAsm) IfExpr=1; + else if (ArgCnt!=1) + BEGIN + WrError(1110); IfExpr=1; + END + else + BEGIN + Used=IsSymbolUsed(ArgStr[1]); + if (IfAsm) + strmaxcpy(ListLine,(Used)?"=>USED":"=>UNUSED",255); + if (Memo("IFUSED")) IfExpr=(Used)?1:0; + else IfExpr=(Used)?0:1; + END + PushIF(IfExpr); +END + + + void CodeIFEXIST(void) +BEGIN + LongInt IfExpr; + Boolean Found; + String NPath; + + ActiveIF=IfAsm; + + if (NOT IfAsm) IfExpr=1; + else if (ArgCnt!=1) + BEGIN + WrError(1110); IfExpr=1; + END + else + BEGIN + strmaxcpy(ArgPart,ArgStr[1],255); + if (*ArgPart=='"') strcpy(ArgPart,ArgPart+1); + if (ArgPart[strlen(ArgPart)-1]=='"') ArgPart[strlen(ArgPart)-1]='\0'; + AddSuffix(ArgPart,IncSuffix); + strmaxcpy(NPath,IncludeList,255); strmaxprep(NPath,".:",255); + Found=(*(FSearch(ArgPart,NPath))!='\0'); + if (IfAsm) + strmaxcpy(ListLine,(Found)?"=>FOUND":"=>NOT FOUND",255); + if (Memo("IFEXIST")) IfExpr=(Found)?1:0; + else IfExpr=(Found)?0:1; + END + PushIF(IfExpr); +END + + + static void CodeIFB(void) +BEGIN + Boolean Blank=True; + LongInt IfExpr; + int z; + + ActiveIF=IfAsm; + + if (NOT IfAsm) IfExpr=1; + else + BEGIN + for (z=1; z<=ArgCnt; z++) if (strlen(ArgStr[z++])>0) Blank=False; + if (IfAsm) + strmaxcpy(ListLine,(Blank)?"=>BLANK":"=>NOT BLANK",255); + if (Memo("IFB")) IfExpr=(Blank)?1:0; + else IfExpr=(Blank)?0:1; + END + PushIF(IfExpr); +END + + + static void CodeELSEIF(void) +BEGIN + LongInt IfExpr; + + if (FirstIfSave==Nil) WrError(1840); + else if (ArgCnt==0) + BEGIN + if (FirstIfSave->State!=IfState_IFIF) WrError(1480); + else if (FirstIfSave->SaveIfAsm) AddBoolFlag(IfAsm=(NOT FirstIfSave->CaseFound)); + FirstIfSave->State=IfState_IFELSE; + END + else if (ArgCnt==1) + BEGIN + if (FirstIfSave->State!=IfState_IFIF) WrError(1480); + else + BEGIN + if (NOT FirstIfSave->SaveIfAsm) IfExpr=1; + else if (FirstIfSave->CaseFound) IfExpr=0; + else IfExpr=GetIfVal(ArgStr[1]); + IfAsm=((FirstIfSave->SaveIfAsm) AND (IfExpr!=0) AND (NOT FirstIfSave->CaseFound)); + if (FirstIfSave->SaveIfAsm) AddBoolFlag(IfExpr!=0); + if (IfExpr!=0) FirstIfSave->CaseFound=True; + END + END + else WrError(1110); + + ActiveIF=(FirstIfSave==Nil) OR (FirstIfSave->SaveIfAsm); +END + + + static void CodeENDIF(void) +BEGIN + PIfSave NewSave; + + if (ArgCnt!=0) WrError(1110); + if (FirstIfSave==Nil) WrError(1840); + else + BEGIN + if ((FirstIfSave->State!=IfState_IFIF) AND (FirstIfSave->State!=IfState_IFELSE)) WrError(1480); + else + BEGIN + IfAsm=FirstIfSave->SaveIfAsm; + NewSave=FirstIfSave; FirstIfSave=NewSave->Next; + free(NewSave); + END + END + + ActiveIF=IfAsm; +END + + + static void EvalIfExpression(char *Cond, TempResult *erg) +BEGIN + FirstPassUnknown=False; + EvalExpression(Cond,erg); + if ((erg->Typ==TempNone) OR (FirstPassUnknown)) + BEGIN + erg->Typ=TempInt; erg->Contents.Int=1; + if (FirstPassUnknown) WrError(1820); + END +END + + + static void CodeSWITCH(void) +BEGIN + PIfSave NewSave; + + ActiveIF=IfAsm; + + NewSave=(PIfSave) malloc(sizeof(TIfSave)); + NewSave->NestLevel=SaveIFs()+1; + NewSave->Next=FirstIfSave; NewSave->SaveIfAsm=IfAsm; + NewSave->CaseFound=False; NewSave->State=IfState_CASESWITCH; + if (ArgCnt!=1) + BEGIN + NewSave->SaveExpr.Typ=TempInt; + NewSave->SaveExpr.Contents.Int=1; + if (IfAsm) WrError(1110); + END + else + BEGIN + EvalIfExpression(ArgStr[1],&(NewSave->SaveExpr)); + SetListLineVal(&(NewSave->SaveExpr)); + END + FirstIfSave=NewSave; +END + + + static void CodeCASE(void) +BEGIN + Boolean eq; + int z; + TempResult t; + + if (FirstIfSave==Nil) WrError(1840); + else if (ArgCnt==0) WrError(1110); + else + BEGIN + if ((FirstIfSave->State!=IfState_CASESWITCH) AND (FirstIfSave->State!=IfState_CASECASE)) WrError(1480); + else + BEGIN + if (NOT FirstIfSave->SaveIfAsm) eq=True; + else if (FirstIfSave->CaseFound) eq=False; + else + BEGIN + eq=False; z=1; + do + BEGIN + EvalIfExpression(ArgStr[z],&t); + eq=(FirstIfSave->SaveExpr.Typ==t.Typ); + if (eq) + switch (t.Typ) + BEGIN + case TempInt: eq=(t.Contents.Int==FirstIfSave->SaveExpr.Contents.Int); break; + case TempFloat: eq=(t.Contents.Float==FirstIfSave->SaveExpr.Contents.Float); break; + case TempString: eq=(strcmp(t.Contents.Ascii,FirstIfSave->SaveExpr.Contents.Ascii)==0); break; + case TempNone: eq=False; break; + END + z++; + END + while ((NOT eq) AND (z<=ArgCnt)); + END; + IfAsm=((FirstIfSave->SaveIfAsm) AND (eq) AND (NOT FirstIfSave->CaseFound)); + if (FirstIfSave->SaveIfAsm) AddBoolFlag(eq AND (NOT FirstIfSave->CaseFound)); + if (eq) FirstIfSave->CaseFound=True; + FirstIfSave->State=IfState_CASECASE; + END + END + + ActiveIF=(FirstIfSave==Nil) OR (FirstIfSave->SaveIfAsm); +END + + + static void CodeELSECASE(void) +BEGIN + if (ArgCnt!=0) WrError(1110); + else + BEGIN + if ((FirstIfSave->State!=IfState_CASESWITCH) AND (FirstIfSave->State!=IfState_CASECASE)) WrError(1480); + else IfAsm=(FirstIfSave->SaveIfAsm AND (NOT FirstIfSave->CaseFound)); + if (FirstIfSave->SaveIfAsm) AddBoolFlag(NOT FirstIfSave->CaseFound); + FirstIfSave->CaseFound=True; + FirstIfSave->State=IfState_CASEELSE; + END + + ActiveIF=(FirstIfSave==Nil) OR (FirstIfSave->SaveIfAsm); +END + + + static void CodeENDCASE(void) +BEGIN + PIfSave NewSave; + + if (ArgCnt!=0) WrError(1110); + if (FirstIfSave==Nil) WrError(1840); + else + BEGIN + if ((FirstIfSave->State!=IfState_CASESWITCH) + AND (FirstIfSave->State!=IfState_CASECASE) + AND (FirstIfSave->State!=IfState_CASEELSE)) WrError(1480); + else + BEGIN + IfAsm=FirstIfSave->SaveIfAsm; + if (NOT FirstIfSave->CaseFound) WrError(100); + NewSave=FirstIfSave; FirstIfSave=NewSave->Next; + free(NewSave); + END + END + + ActiveIF=IfAsm; +END + + + Boolean CodeIFs(void) +BEGIN + Boolean Result=True; + + ActiveIF=False; + + switch (toupper(*OpPart)) + BEGIN + case 'I': + if (Memo("IF")) CodeIF(); + else if ((Memo("IFDEF")) OR (Memo("IFNDEF"))) CodeIFDEF(); + else if ((Memo("IFUSED")) OR (Memo("IFNUSED"))) CodeIFUSED(); + else if ((Memo("IFEXIST")) OR (Memo("IFNEXIST"))) CodeIFEXIST(); + else if ((Memo("IFB")) OR (Memo("IFNB"))) CodeIFB(); + else Result=False; + break; + case 'E': + if ((Memo("ELSE")) OR (Memo("ELSEIF"))) CodeELSEIF(); + else if (Memo("ENDIF")) CodeENDIF(); + else if (Memo("ELSECASE")) CodeELSECASE(); + else if (Memo("ENDCASE")) CodeENDCASE(); + else Result=False; + break; + case 'S': + if (Memo("SWITCH")) CodeSWITCH(); + else Result=False; + break; + case 'C': + if (Memo("CASE")) CodeCASE(); + else Result=False; + break; + default: + Result=False; + END + + return Result; +END + + Integer SaveIFs(void) +BEGIN + return (FirstIfSave==Nil) ? 0 : FirstIfSave->NestLevel; +END + + void RestoreIFs(Integer Level) +BEGIN + PIfSave OldSave; + + while ((FirstIfSave!=Nil) AND (FirstIfSave->NestLevel!=Level)) + BEGIN + OldSave=FirstIfSave; FirstIfSave=OldSave->Next; + IfAsm=OldSave->SaveIfAsm; + free(OldSave); + END +END + + + Boolean IFListMask(void) +BEGIN + switch (ListOn) + BEGIN + case 0: return True; + case 1: return False; + case 2: return ((NOT ActiveIF) AND (NOT IfAsm)); + case 3: return (ActiveIF OR (NOT IfAsm)); + END + return True; +END + + + void AsmIFInit(void) +BEGIN + IfAsm=True; +END + + + void asmif_init(void) +BEGIN +END |