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-rw-r--r--code16c5x.c448
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diff --git a/code16c5x.c b/code16c5x.c
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+/* code16c5x.c */
+/*****************************************************************************/
+/* AS-Portierung */
+/* */
+/* AS - Codegenerator fuer PIC16C5x */
+/* */
+/* Historie: 19.8.1996 Grundsteinlegung */
+/* 7. 7.1998 Fix Zugriffe auf CharTransTable wg. signed chars */
+/* 17. 8.1998 RES mit Bookkeeping */
+/* 3. 1.1999 ChkPC-Anpassung */
+/* */
+/*****************************************************************************/
+
+#include "stdinc.h"
+
+#include <string.h>
+
+#include "strutil.h"
+#include "chunks.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;
+ Word Code;
+ Byte DefaultDir;
+ } AriOrder;
+
+#define FixedOrderCnt 5
+#define LitOrderCnt 5
+#define AriOrderCnt 14
+#define BitOrderCnt 4
+#define FOrderCnt 2
+
+#define D_CPU16C54 0
+#define D_CPU16C55 1
+#define D_CPU16C56 2
+#define D_CPU16C57 3
+
+static FixedOrder *FixedOrders;
+static FixedOrder *LitOrders;
+static AriOrder *AriOrders;
+static FixedOrder *BitOrders;
+static FixedOrder *FOrders;
+
+static CPUVar CPU16C54,CPU16C55,CPU16C56,CPU16C57;
+
+/*-------------------------------------------------------------------------*/
+
+ static void AddFixed(char *NName, Word NCode)
+BEGIN
+ if (InstrZ>=FixedOrderCnt) exit(255);
+ FixedOrders[InstrZ].Name=NName;
+ FixedOrders[InstrZ++].Code=NCode;
+END
+
+ static void AddLit(char *NName, Word NCode)
+BEGIN
+ if (InstrZ>=LitOrderCnt) exit(255);
+ LitOrders[InstrZ].Name=NName;
+ LitOrders[InstrZ++].Code=NCode;
+END
+
+ static void AddAri(char *NName, Word NCode, Byte NDef)
+BEGIN
+ if (InstrZ>=AriOrderCnt) exit(255);
+ AriOrders[InstrZ].Name=NName;
+ AriOrders[InstrZ].Code=NCode;
+ AriOrders[InstrZ++].DefaultDir=NDef;
+END
+
+ static void AddBit(char *NName, Word NCode)
+BEGIN
+ if (InstrZ>=BitOrderCnt) exit(255);
+ BitOrders[InstrZ].Name=NName;
+ BitOrders[InstrZ++].Code=NCode;
+END
+
+ static void AddF(char *NName, Word NCode)
+BEGIN
+ if (InstrZ>=FOrderCnt) exit(255);
+ FOrders[InstrZ].Name=NName;
+ FOrders[InstrZ++].Code=NCode;
+END
+
+ static void InitFields(void)
+BEGIN
+ FixedOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*FixedOrderCnt); InstrZ=0;
+ AddFixed("CLRW" , 0x040);
+ AddFixed("NOP" , 0x000);
+ AddFixed("CLRWDT", 0x004);
+ AddFixed("OPTION", 0x002);
+ AddFixed("SLEEP" , 0x003);
+
+ LitOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*LitOrderCnt); InstrZ=0;
+ AddLit("ANDLW", 0xe00);
+ AddLit("IORLW", 0xd00);
+ AddLit("MOVLW", 0xc00);
+ AddLit("RETLW", 0x800);
+ AddLit("XORLW", 0xf00);
+
+ AriOrders=(AriOrder *) malloc(sizeof(AriOrder)*AriOrderCnt); InstrZ=0;
+ AddAri("ADDWF" , 0x1c0, 0);
+ AddAri("ANDWF" , 0x140, 0);
+ AddAri("COMF" , 0x240, 1);
+ AddAri("DECF" , 0x0c0, 1);
+ AddAri("DECFSZ", 0x2c0, 1);
+ AddAri("INCF" , 0x280, 1);
+ AddAri("INCFSZ", 0x3c0, 1);
+ AddAri("IORWF" , 0x100, 0);
+ AddAri("MOVF" , 0x200, 0);
+ AddAri("RLF" , 0x340, 1);
+ AddAri("RRF" , 0x300, 1);
+ AddAri("SUBWF" , 0x080, 0);
+ AddAri("SWAPF" , 0x380, 1);
+ AddAri("XORWF" , 0x180, 0);
+
+ BitOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*BitOrderCnt); InstrZ=0;
+ AddBit("BCF" , 0x400);
+ AddBit("BSF" , 0x500);
+ AddBit("BTFSC", 0x600);
+ AddBit("BTFSS", 0x700);
+
+ FOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*FOrderCnt); InstrZ=0;
+ AddF("CLRF" , 0x060);
+ AddF("MOVWF", 0x020);
+END
+
+ static void DeinitFields(void)
+BEGIN
+ free(FixedOrders);
+ free(LitOrders);
+ free(AriOrders);
+ free(BitOrders);
+ free(FOrders);
+END
+
+/*-------------------------------------------------------------------------*/
+
+ static Word ROMEnd(void)
+BEGIN
+ switch (MomCPU-CPU16C54)
+ BEGIN
+ case D_CPU16C54:
+ case D_CPU16C55: return 511;
+ case D_CPU16C56: return 1023;
+ case D_CPU16C57: return 2047;
+ default: return 0;
+ END
+END
+
+ static Boolean DecodePseudo(void)
+BEGIN
+ Word Size;
+ Boolean ValOK;
+ int z;
+ TempResult t;
+ char *p;
+ LongInt MinV,MaxV;
+
+ if (Memo("SFR"))
+ BEGIN
+ CodeEquate(SegData,0,0x1f);
+ return True;
+ END
+
+ if (Memo("RES"))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ FirstPassUnknown=False;
+ Size=EvalIntExpression(ArgStr[1],Int16,&ValOK);
+ if (FirstPassUnknown) WrError(1820);
+ if ((ValOK) AND (NOT FirstPassUnknown))
+ BEGIN
+ DontPrint=True;
+ CodeLen=Size;
+ BookKeeping();
+ END
+ END
+ return True;
+ END
+
+ if (Memo("DATA"))
+ BEGIN
+ MaxV=(ActPC==SegCode)?4095:255; MinV=(-((MaxV+1) >> 1));
+ if (ArgCnt==0) WrError(1110);
+ else
+ BEGIN
+ ValOK=True;
+ for (z=1; z<=ArgCnt; z++)
+ if (ValOK)
+ BEGIN
+ FirstPassUnknown=False;
+ EvalExpression(ArgStr[z],&t);
+ if ((FirstPassUnknown) AND (t.Typ==TempInt)) t.Contents.Int&=MaxV;
+ switch (t.Typ)
+ BEGIN
+ case TempInt:
+ if (ChkRange(t.Contents.Int,MinV,MaxV))
+ if (ActPC==SegCode) WAsmCode[CodeLen++]=t.Contents.Int & MaxV;
+ else BAsmCode[CodeLen++]=t.Contents.Int & MaxV;
+ break;
+ case TempFloat:
+ WrError(1135); ValOK=False;
+ break;
+ case TempString:
+ for (p=t.Contents.Ascii; *p!='\0'; p++)
+ if (ActPC==SegCode)
+ WAsmCode[CodeLen++]=CharTransTable[((usint) *p)&0xff];
+ else
+ BAsmCode[CodeLen++]=CharTransTable[((usint) *p)&0xff];
+ break;
+ default:
+ ValOK=False;
+ END
+ END
+ if (NOT ValOK) CodeLen=0;
+ END
+ return True;
+ END
+
+ if (Memo("ZERO"))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ FirstPassUnknown=False;
+ Size=EvalIntExpression(ArgStr[1],Int16,&ValOK);
+ if (FirstPassUnknown) WrError(1820);
+ if ((ValOK) AND (NOT FirstPassUnknown))
+ if ((Size << 1)>MaxCodeLen) WrError(1920);
+ else
+ BEGIN
+ CodeLen=Size;
+ memset(WAsmCode,0,2*Size);
+ END
+ END
+ return True;
+ END
+
+ return False;
+END
+
+ static void MakeCode_16C5X(void)
+BEGIN
+ Boolean OK;
+ Word AdrWord;
+ int z;
+
+ CodeLen=0; DontPrint=False;
+
+ /* zu ignorierendes */
+
+ if (Memo("")) return;
+
+ /* Pseudoanweisungen */
+
+ if (DecodePseudo()) return;
+
+ /* Anweisungen ohne Argument */
+
+ for (z=0; z<FixedOrderCnt; z++)
+ if (Memo(FixedOrders[z].Name))
+ BEGIN
+ if (ArgCnt!=0) WrError(1110);
+ else
+ BEGIN
+ CodeLen=1; WAsmCode[0]=FixedOrders[z].Code;
+ END
+ return;
+ END
+
+ /* nur ein Literal als Argument */
+
+ for (z=0; z<LitOrderCnt; z++)
+ if (Memo(LitOrders[z].Name))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[1],Int8,&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]=LitOrders[z].Code+(AdrWord & 0xff);
+ END
+ END
+ return;
+ END
+
+ /* W-mit-f-Operationen */
+
+ for (z=0; z<AriOrderCnt; z++)
+ if (Memo(AriOrders[z].Name))
+ BEGIN
+ if ((ArgCnt==0) OR (ArgCnt>2)) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[1],UInt5,&OK);
+ if (OK)
+ BEGIN
+ ChkSpace(SegData);
+ WAsmCode[0]=AriOrders[z].Code+(AdrWord & 0x1f);
+ if (ArgCnt==1)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=AriOrders[z].DefaultDir << 5;
+ END
+ else if (strcasecmp(ArgStr[2],"W")==0) CodeLen=1;
+ else if (strcasecmp(ArgStr[2],"F")==0)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=0x20;
+ END
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[2],UInt1,&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=AdrWord << 5;
+ END
+ END
+ END
+ END
+ return;
+ END
+
+ for (z=0; z<BitOrderCnt; z++)
+ if (Memo(BitOrders[z].Name))
+ BEGIN
+ if (ArgCnt!=2) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[2],UInt3,&OK);
+ if (OK)
+ BEGIN
+ WAsmCode[0]=EvalIntExpression(ArgStr[1],UInt5,&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=BitOrders[z].Code+(AdrWord << 5);
+ ChkSpace(SegData);
+ END
+ END
+ END
+ return;
+ END
+
+ for (z=0; z<FOrderCnt; z++)
+ if (Memo(FOrders[z].Name))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[1],UInt5,&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]=FOrders[z].Code+AdrWord;
+ ChkSpace(SegData);
+ END
+ END
+ return;
+ END
+
+ if (Memo("TRIS"))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[1],UInt3,&OK);
+ if (OK)
+ if (ChkRange(AdrWord,5,7))
+ BEGIN
+ CodeLen=1; WAsmCode[0]=0x000+AdrWord;
+ ChkSpace(SegData);
+ END
+ END
+ return;
+ END
+
+ if ((Memo("CALL")) OR (Memo("GOTO")))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[1],UInt16,&OK);
+ if (OK)
+ if (AdrWord>ROMEnd()) WrError(1320);
+ else if ((Memo("CALL")) AND ((AdrWord & 0x100)!=0)) WrError(1905);
+ else
+ BEGIN
+ ChkSpace(SegCode);
+ if (((ProgCounter() ^ AdrWord) & 0x200)!=0)
+ WAsmCode[CodeLen++]=0x4a3+((AdrWord & 0x200) >> 1); /* BCF/BSF 3,5 */
+ if (((ProgCounter() ^ AdrWord) & 0x400)!=0)
+ WAsmCode[CodeLen++]=0x4c3+((AdrWord & 0x400) >> 2); /* BCF/BSF 3,6 */
+ if (Memo("CALL")) WAsmCode[CodeLen++]=0x900+(AdrWord & 0xff);
+ else WAsmCode[CodeLen++]=0xa00+(AdrWord & 0x1ff);
+ END
+ END
+ return;
+ END;
+
+ WrXError(1200,OpPart);
+END
+
+ static Boolean IsDef_16C5X(void)
+BEGIN
+ return Memo("SFR");
+END
+
+ static void SwitchFrom_16C5X()
+BEGIN
+ DeinitFields();
+END
+
+ static void SwitchTo_16C5X(void)
+BEGIN
+ TurnWords=False; ConstMode=ConstModeMoto; SetIsOccupied=False;
+
+ PCSymbol="*"; HeaderID=0x71; NOPCode=0x000;
+ DivideChars=","; HasAttrs=False;
+
+ ValidSegs=(1<<SegCode)+(1<<SegData);
+ Grans[SegCode]=2; ListGrans[SegCode]=2; SegInits[SegCode]=0;
+ SegLimits[SegCode] = ROMEnd();
+ Grans[SegData]=1; ListGrans[SegData]=1; SegInits[SegCode]=0;
+ SegLimits[SegData] = 0x1f;
+
+ MakeCode=MakeCode_16C5X; IsDef=IsDef_16C5X;
+ SwitchFrom=SwitchFrom_16C5X; InitFields();
+END
+
+ void code16c5x_init(void)
+BEGIN
+ CPU16C54=AddCPU("16C54",SwitchTo_16C5X);
+ CPU16C55=AddCPU("16C55",SwitchTo_16C5X);
+ CPU16C56=AddCPU("16C56",SwitchTo_16C5X);
+ CPU16C57=AddCPU("16C57",SwitchTo_16C5X);
+END
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 19:02:34 +0000