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-rw-r--r--code16c8x.c472
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+/* code16c8x.c */
+/*****************************************************************************/
+/* AS-Portierung */
+/* */
+/* AS-Codegenerator PIC16C8x */
+/* */
+/* Historie: 21.8.1996 Grundsteinlegung */
+/* 7. 7.1998 Fix Zugriffe auf CharTransTable wg. signed chars */
+/* 18. 8.1998 Bookkeeping-Aufruf bei RES */
+/* 3. 1.1999 ChkPC-Anpassung */
+/* Sonderadressbereich PIC16C84 */
+/* 2. 10.1999 ChkPC wurde nicht angebunden... */
+/* */
+/*****************************************************************************/
+
+#include "stdinc.h"
+
+#include <string.h>
+
+#include "chunks.h"
+#include "strutil.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 D_CPU16C64 0
+#define D_CPU16C84 1
+
+#define FixedOrderCnt 7
+#define LitOrderCnt 7
+#define AriOrderCnt 14
+#define BitOrderCnt 4
+#define FOrderCnt 2
+
+static FixedOrder *FixedOrders;
+static FixedOrder *LitOrders;
+static AriOrder *AriOrders;
+static FixedOrder *BitOrders;
+static FixedOrder *FOrders;
+
+static CPUVar CPU16C64,CPU16C84;
+
+/*--------------------------------------------------------------------------*/
+
+ 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 NDir)
+BEGIN
+ if (InstrZ>=AriOrderCnt) exit(255);
+ AriOrders[InstrZ].Name=NName;
+ AriOrders[InstrZ].Code=NCode;
+ AriOrders[InstrZ++].DefaultDir=NDir;
+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" , 0x0100);
+ AddFixed("NOP" , 0x0000);
+ AddFixed("CLRWDT", 0x0064);
+ AddFixed("OPTION", 0x0062);
+ AddFixed("SLEEP" , 0x0063);
+ AddFixed("RETFIE", 0x0009);
+ AddFixed("RETURN", 0x0008);
+
+ LitOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*LitOrderCnt); InstrZ=0;
+ AddLit("ADDLW", 0x3e00);
+ AddLit("ANDLW", 0x3900);
+ AddLit("IORLW", 0x3800);
+ AddLit("MOVLW", 0x3000);
+ AddLit("RETLW", 0x3400);
+ AddLit("SUBLW", 0x3c00);
+ AddLit("XORLW", 0x3a00);
+
+ AriOrders=(AriOrder *) malloc(sizeof(AriOrder)*AriOrderCnt); InstrZ=0;
+ AddAri("ADDWF" , 0x0700, 0);
+ AddAri("ANDWF" , 0x0500, 0);
+ AddAri("COMF" , 0x0900, 1);
+ AddAri("DECF" , 0x0300, 1);
+ AddAri("DECFSZ", 0x0b00, 1);
+ AddAri("INCF" , 0x0a00, 1);
+ AddAri("INCFSZ", 0x0f00, 1);
+ AddAri("IORWF" , 0x0400, 0);
+ AddAri("MOVF" , 0x0800, 0);
+ AddAri("RLF" , 0x0d00, 1);
+ AddAri("RRF" , 0x0c00, 1);
+ AddAri("SUBWF" , 0x0200, 0);
+ AddAri("SWAPF" , 0x0e00, 1);
+ AddAri("XORWF" , 0x0600, 0);
+
+ BitOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*BitOrderCnt); InstrZ=0;
+ AddBit("BCF" , 0x1000);
+ AddBit("BSF" , 0x1400);
+ AddBit("BTFSC", 0x1800);
+ AddBit("BTFSS", 0x1c00);
+
+ FOrders=(FixedOrder *) malloc(sizeof(FixedOrder)*FOrderCnt); InstrZ=0;
+ AddF("CLRF" , 0x0180);
+ AddF("MOVWF", 0x0080);
+END
+
+ static void DeinitFields(void)
+BEGIN
+ free(FixedOrders);
+ free(LitOrders);
+ free(AriOrders);
+ free(BitOrders);
+ free(FOrders);
+END
+
+/*--------------------------------------------------------------------------*/
+
+ static Word ROMEnd(void)
+BEGIN
+ switch (MomCPU-CPU16C64)
+ BEGIN
+ case D_CPU16C64: return 0x7ff;
+ case D_CPU16C84: return 0x3ff;
+ default: return 0;
+ END
+END
+
+ static Word EvalFExpression(char *Asc, Boolean *OK)
+BEGIN
+ LongInt h;
+
+ h=EvalIntExpression(Asc,UInt9,OK);
+ if (*OK)
+ BEGIN
+ ChkSpace(SegData); return (h & 0x7f);
+ END
+ else return 0;
+END
+
+ static Boolean DecodePseudo(void)
+BEGIN
+ Word Size;
+ Boolean ValOK;
+ int z;
+ char *p;
+ TempResult t;
+ LongInt MinV,MaxV;
+
+ if (Memo("SFR"))
+ BEGIN
+ CodeEquate(SegData,0,511);
+ 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)?16383:255; 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_16c8x(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;
+ if (Memo("OPTION")) WrError(130);
+ 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=EvalFExpression(ArgStr[1],&OK);
+ if (OK)
+ BEGIN
+ WAsmCode[0]=AriOrders[z].Code+AdrWord;
+ if (ArgCnt==1)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=AriOrders[z].DefaultDir << 7;
+ END
+ else if (strcasecmp(ArgStr[2],"W")==0) CodeLen=1;
+ else if (strcasecmp(ArgStr[2],"F")==0)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=0x80;
+ END
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[2],UInt1,&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=AdrWord << 7;
+ 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]=EvalFExpression(ArgStr[1],&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]+=BitOrders[z].Code+(AdrWord << 7);
+ 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=EvalFExpression(ArgStr[1],&OK);
+ if (OK)
+ BEGIN
+ CodeLen=1; WAsmCode[0]=FOrders[z].Code+AdrWord;
+ END
+ END
+ return;
+ END
+
+ if (Memo("TRIS"))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ FirstPassUnknown=False;
+ AdrWord=EvalIntExpression(ArgStr[1],UInt3,&OK);
+ if (FirstPassUnknown) AdrWord=5;
+ if (OK)
+ if (ChkRange(AdrWord,5,6))
+ BEGIN
+ CodeLen=1; WAsmCode[0]=0x0060+AdrWord;
+ ChkSpace(SegData); WrError(130);
+ END
+ END
+ return;
+ END
+
+ if ((Memo("CALL")) OR (Memo("GOTO")))
+ BEGIN
+ if (ArgCnt!=1) WrError(1110);
+ else
+ BEGIN
+ AdrWord=EvalIntExpression(ArgStr[1],Int16,&OK);
+ if (OK)
+ if (AdrWord>ROMEnd()) WrError(1320);
+ else
+ BEGIN
+ ChkSpace(SegCode);
+ if (((ProgCounter() ^ AdrWord) & 0x800)!=0)
+ WAsmCode[CodeLen++]=0x118a+((AdrWord & 0x800) >> 1); /* BCF/BSF 10,3 */
+ if (((ProgCounter() ^ AdrWord) & 0x1000)!=0)
+ WAsmCode[CodeLen++]=0x120a+((AdrWord & 0x400) >> 2); /* BCF/BSF 10,4 */
+ if (Memo("CALL")) WAsmCode[CodeLen++]=0x2000+(AdrWord & 0x7ff);
+ else WAsmCode[CodeLen++]=0x2800+(AdrWord & 0x7ff);
+ END
+ END
+ return;
+ END
+
+ WrXError(1200,OpPart);
+END
+
+ static Boolean IsDef_16c8x(void)
+BEGIN
+ return (Memo("SFR"));
+END
+
+ static Boolean ChkPC_16c8x(LargeWord Addr)
+BEGIN
+
+ if ((ActPC == SegCode) AND (Addr > SegLimits[SegCode]))
+ BEGIN
+ return ((Addr >= 0x2000) AND (Addr <= 0x2007));
+ END
+ else return (Addr <= SegLimits[ActPC]);
+END
+
+ static void SwitchFrom_16c8x(void)
+BEGIN
+ DeinitFields();
+END
+
+ static void SwitchTo_16c8x(void)
+BEGIN
+ TurnWords=False; ConstMode=ConstModeMoto; SetIsOccupied=False;
+
+ PCSymbol="*"; HeaderID=0x70; NOPCode=0x0000;
+ DivideChars=","; HasAttrs=False;
+
+ ValidSegs=(1<<SegCode)+(1<<SegData);
+ Grans[SegCode]=2; ListGrans[SegCode]=2; SegInits[SegCode]=0;
+ SegLimits[SegCode] = ROMEnd() + 0x300;
+ Grans[SegData]=1; ListGrans[SegData]=1; SegInits[SegData]=0;
+ SegLimits[SegData] = 0x1ff;
+ ChkPC = ChkPC_16c8x;
+
+ MakeCode=MakeCode_16c8x; IsDef=IsDef_16c8x;
+ SwitchFrom=SwitchFrom_16c8x; InitFields();
+END
+
+ void code16c8x_init(void)
+BEGIN
+ CPU16C64=AddCPU("16C64",SwitchTo_16c8x);
+ CPU16C84=AddCPU("16C84",SwitchTo_16c8x);
+END