/* codetms7.c */ /*****************************************************************************/ /* AS-Portierung */ /* */ /* Codegenerator TMS7000-Familie */ /* */ /* Historie: 26.2.1997 Grundsteinlegung */ /* */ /*****************************************************************************/ #include "stdinc.h" #include #include #include "strutil.h" #include "bpemu.h" #include "nls.h" #include "asmdef.h" #include "asmsub.h" #include "asmpars.h" #include "codepseudo.h" #include "codevars.h" typedef struct { char *Name; Word Code; } FixedOrder; typedef struct { char *Name; int Length; Word Code; } LengthOrder; #define ModNone (-1) #define ModAccA 0 #define MModAccA (1 << ModAccA) /* A */ #define ModAccB 1 #define MModAccB (1 << ModAccB) /* B */ #define ModReg 2 #define MModReg (1 << ModReg) /* Rn */ #define ModPort 3 #define MModPort (1 << ModPort) /* Pn */ #define ModAbs 4 #define MModAbs (1 << ModAbs) /* nnnn */ #define ModBRel 5 #define MModBRel (1 << ModBRel) /* nnnn(B) */ #define ModIReg 6 #define MModIReg (1 << ModIReg) /* *Rn */ #define ModImm 7 #define MModImm (1 << ModImm) /* #nn */ #define ModImmBRel 8 #define MModImmBRel (1 << ModImmBRel) /* #nnnn(b) */ #define FixedOrderCount 14 #define Rel8OrderCount 12 #define ALU1OrderCount 7 #define ALU2OrderCount 5 #define JmpOrderCount 2 #define ABRegOrderCount 14 static CPUVar CPU70C40,CPU70C20,CPU70C00, CPU70CT40,CPU70CT20, CPU70C82,CPU70C42,CPU70C02, CPU70C48,CPU70C08; static Byte OpSize; static ShortInt AdrType; static Byte AdrVals[2]; static FixedOrder *FixedOrders; static FixedOrder *Rel8Orders; static FixedOrder *ALU1Orders; static LengthOrder *ALU2Orders; static FixedOrder *JmpOrders; static FixedOrder *ABRegOrders; /*---------------------------------------------------------------------------*/ static void InitFixed(char *NName, Word NCode) BEGIN if (InstrZ>=FixedOrderCount) exit(255); FixedOrders[InstrZ].Name=NName; FixedOrders[InstrZ++].Code=NCode; END static void InitRel8(char *NName, Word NCode) BEGIN if (InstrZ>=Rel8OrderCount) exit(255); Rel8Orders[InstrZ].Name=NName; Rel8Orders[InstrZ++].Code=NCode; END static void InitALU1(char *NName, Word NCode) BEGIN if (InstrZ>=ALU1OrderCount) exit(255); ALU1Orders[InstrZ].Name=NName; ALU1Orders[InstrZ++].Code=NCode; END static void InitALU2(char *NName, Word NCode) BEGIN if (InstrZ>=ALU2OrderCount) exit(255); ALU2Orders[InstrZ].Name=NName; ALU2Orders[InstrZ].Length=strlen(NName); ALU2Orders[InstrZ++].Code=NCode; END static void InitJmp(char *NName, Word NCode) BEGIN if (InstrZ>=JmpOrderCount) exit(255); JmpOrders[InstrZ].Name=NName; JmpOrders[InstrZ++].Code=NCode; END static void InitABReg(char *NName, Word NCode) BEGIN if (InstrZ>=ABRegOrderCount) exit(255); ABRegOrders[InstrZ].Name=NName; ABRegOrders[InstrZ++].Code=NCode; END static void InitFields(void) BEGIN FixedOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*FixedOrderCount); InstrZ=0; InitFixed("CLRC" ,0x00b0); InitFixed("DINT" ,0x0060); InitFixed("EINT" ,0x0005); InitFixed("IDLE" ,0x0001); InitFixed("LDSP" ,0x000d); InitFixed("NOP" ,0x0000); InitFixed("RETI" ,0x000b); InitFixed("RTI" ,0x000b); InitFixed("RETS" ,0x000a); InitFixed("RTS" ,0x000a); InitFixed("SETC" ,0x0007); InitFixed("STSP" ,0x0009); InitFixed("TSTA" ,0x00b0); InitFixed("TSTB" ,0x00c1); Rel8Orders=(FixedOrder *) malloc(sizeof(FixedOrder)*Rel8OrderCount); InstrZ=0; InitRel8("JMP",0xe0); InitRel8("JC" ,0xe3); InitRel8("JEQ",0xe2); InitRel8("JHS",0xe3); InitRel8("JL" ,0xe7); InitRel8("JN" ,0xe1); InitRel8("JNC",0xe7); InitRel8("JNE",0xe6); InitRel8("JNZ",0xe6); InitRel8("JP" ,0xe4); InitRel8("JPZ",0xe5); InitRel8("JZ" ,0xe2); ALU1Orders=(FixedOrder *) malloc(sizeof(FixedOrder)*ALU1OrderCount); InstrZ=0; InitALU1("ADC", 9); InitALU1("ADD", 8); InitALU1("DAC",14); InitALU1("DSB",15); InitALU1("SBB",11); InitALU1("SUB",10); InitALU1("MPY",12); ALU2Orders=(LengthOrder *) malloc(sizeof(LengthOrder)*ALU2OrderCount); InstrZ=0; InitALU2("AND" , 3); InitALU2("BTJO", 6); InitALU2("BTJZ", 7); InitALU2("OR" , 4); InitALU2("XOR", 5); JmpOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*JmpOrderCount); InstrZ=0; InitJmp("BR" ,12); InitJmp("CALL" ,14); ABRegOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*ABRegOrderCount); InstrZ=0; InitABReg("CLR" , 5); InitABReg("DEC" , 2); InitABReg("DECD" ,11); InitABReg("INC" , 3); InitABReg("INV" , 4); InitABReg("POP" , 9); InitABReg("PUSH" , 8); InitABReg("RL" ,14); InitABReg("RLC" ,15); InitABReg("RR" ,12); InitABReg("RRC" ,13); InitABReg("SWAP" , 7); InitABReg("XCHB" , 6); InitABReg("DJNZ" ,10); END static void DeinitFields(void) BEGIN free(FixedOrders); free(Rel8Orders); free(ALU1Orders); free(ALU2Orders); free(JmpOrders); free(ABRegOrders); END /*---------------------------------------------------------------------------*/ static void ChkAdr(Word Mask) BEGIN if ((AdrType!=-1) AND ((Mask & (1L << AdrType))==0)) BEGIN WrError(1350); AdrType=ModNone; AdrCnt=0; END END static void DecodeAdr(char *Asc, Word Mask) BEGIN Integer HVal; int Lev,l; char *p; Boolean OK; AdrType=ModNone; AdrCnt=0; if (strcasecmp(Asc,"A")==0) BEGIN if (((Mask & MModAccA)!=0)) AdrType=ModAccA; else if (((Mask & MModReg)!=0)) BEGIN AdrCnt=1; AdrVals[0]=0; AdrType=ModReg; END else BEGIN AdrCnt=2; AdrVals[0]=0; AdrVals[1]=0; AdrType=ModAbs; END ChkAdr(Mask); return; END if (strcasecmp(Asc,"B")==0) BEGIN if (((Mask & MModAccB)!=0)) AdrType=ModAccB; else if (((Mask & MModReg)!=0)) BEGIN AdrCnt=1; AdrVals[0]=1; AdrType=ModReg; END else BEGIN AdrCnt=2; AdrVals[0]=0; AdrVals[1]=1; AdrType=ModAbs; END ChkAdr(Mask); return; END if ((*Asc=='#') OR (*Asc=='%')) BEGIN strcpy(Asc,Asc+1); l=strlen(Asc); if ((l>=3) AND (strcasecmp(Asc+l-3,"(B)")==0)) BEGIN Asc[l-3]='\0'; HVal=EvalIntExpression(Asc,Int16,&OK); if (OK) BEGIN AdrVals[0]=Hi(HVal); AdrVals[1]=Lo(HVal); AdrType=ModImmBRel; AdrCnt=2; END END else BEGIN switch (OpSize) BEGIN case 0: AdrVals[0]=EvalIntExpression(Asc,Int8,&OK); break; case 1: HVal=EvalIntExpression(Asc,Int16,&OK); AdrVals[0]=Hi(HVal); AdrVals[1]=Lo(HVal); break; END if (OK) BEGIN AdrCnt=1+OpSize; AdrType=ModImm; END END ChkAdr(Mask); return; END if (*Asc=='*') BEGIN AdrVals[0]=EvalIntExpression(Asc+1,Int8,&OK); if (OK) BEGIN AdrCnt=1; AdrType=ModIReg; END ChkAdr(Mask); return; END if (*Asc=='@') strcpy(Asc,Asc+1); if (Asc[strlen(Asc)-1]==')') BEGIN p=Asc+strlen(Asc)-2; Lev=0; while ((p>=Asc) AND (Lev!=-1)) BEGIN switch (*p) BEGIN case '(': Lev--; break; case ')': Lev++; break; END if (Lev!=-1) p--; END if (p127) OR (AdrInt<-128)) WrError(1370); else BEGIN CodeLen=2; BAsmCode[0]=Rel8Orders[z].Code; BAsmCode[1]=AdrInt & 0xff; END END return; END if ((Memo("CMP")) OR (Memo("CMPA"))) BEGIN if (((Memo("CMP")) AND (ArgCnt!=2)) OR ((Memo("CMPA")) AND (ArgCnt!=1))) WrError(1110); else BEGIN if (Memo("CMPA")) AdrType=ModAccA; else DecodeAdr(ArgStr[2],MModAccA+MModAccB+MModReg); switch (AdrType) BEGIN case ModAccA: DecodeAdr(ArgStr[1],MModAbs+MModIReg+MModBRel+MModAccB+MModReg+MModImm); switch (AdrType) BEGIN case ModAbs: BAsmCode[0]=0x8d; memcpy(BAsmCode+1,AdrVals,2); CodeLen=3; break; case ModIReg: BAsmCode[0]=0x9d; BAsmCode[1]=AdrVals[0]; CodeLen=2; break; case ModBRel: BAsmCode[0]=0xad; memcpy(BAsmCode+1,AdrVals,2); CodeLen=3; break; case ModAccB: BAsmCode[0]=0x6d; CodeLen=1; break; case ModReg: BAsmCode[0]=0x1d; BAsmCode[1]=AdrVals[0]; CodeLen=2; break; case ModImm: BAsmCode[0]=0x2d; BAsmCode[1]=AdrVals[0]; CodeLen=2; break; END break; case ModAccB: DecodeAdr(ArgStr[1],MModReg+MModImm); switch (AdrType) BEGIN case ModReg: BAsmCode[0]=0x3d; BAsmCode[1]=AdrVals[0]; CodeLen=2; break; case ModImm: BAsmCode[0]=0x5d; BAsmCode[1]=AdrVals[0]; CodeLen=2; break; END break; case ModReg: BAsmCode[2]=AdrVals[0]; DecodeAdr(ArgStr[1],MModReg+MModImm); switch (AdrType) BEGIN case ModReg: BAsmCode[0]=0x4d; BAsmCode[1]=AdrVals[0]; CodeLen=3; break; case ModImm: BAsmCode[0]=0x7d; BAsmCode[1]=AdrVals[0]; CodeLen=3; break; END break; END END return; END for (z=0; z127) OR (AdrInt<-128))) BEGIN WrError(1370); CodeLen=0; END else BAsmCode[CodeLen++]=AdrInt & 0xff; END END return; END for (z=0; z127) OR (AdrInt<-128))) BEGIN WrError(1370); CodeLen=0; END else BAsmCode[CodeLen++]=AdrInt & 0xff; END END return; END if (Memo("TRAP")) BEGIN if (ArgCnt!=1) WrError(1110); else BEGIN FirstPassUnknown=False; BAsmCode[0]=EvalIntExpression(ArgStr[1],UInt5,&OK); if (FirstPassUnknown) BAsmCode[0]&=15; if (OK) if (BAsmCode[0]>23) WrError(1320); else BEGIN BAsmCode[0]=0xff-BAsmCode[0]; CodeLen=1; END END return; END if (Memo("TST")) BEGIN if (ArgCnt!=1) WrError(1110); else BEGIN DecodeAdr(ArgStr[1],MModAccA+MModAccB); switch (AdrType) BEGIN case ModAccA: BAsmCode[0]=0xb0; CodeLen=1; break; case ModAccB: BAsmCode[0]=0xc1; CodeLen=1; break; END END return; END WrXError(1200,OpPart); END static Boolean IsDef_TMS7(void) BEGIN return False; END static void InternSymbol_TMS7(char *Asc, TempResult *Erg) BEGIN String h; Boolean Err; Erg->Typ=TempNone; if ((strlen(Asc)<2) OR ((toupper(*Asc)!='R') AND (toupper(*Asc)!='P'))) return; strmaxcpy(h,Asc+1,255); if ((*h=='0') AND (strlen(h)>1)) *h='$'; Erg->Contents.Int=ConstLongInt(h,&Err); if ((NOT Err) OR (Erg->Contents.Int<0) OR (Erg->Contents.Int>255)) return; Erg->Typ=TempInt; if (toupper(*Asc)=='P') Erg->Contents.Int+=0x100; END static void SwitchFrom_TMS7(void) BEGIN DeinitFields(); END static void SwitchTo_TMS7(void) BEGIN TurnWords=False; ConstMode=ConstModeIntel; SetIsOccupied=False; PCSymbol="$"; HeaderID=0x73; NOPCode=0x00; DivideChars=","; HasAttrs=False; ValidSegs=1<