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/* asmcode.c */
/*****************************************************************************/
/* AS-Portierung */
/* */
/* Verwaltung der Code-Datei */
/* */
/* Historie: 18. 5.1996 Grundsteinlegung */
/* */
/*****************************************************************************/
#include "stdinc.h"
#include <string.h>
#include "version.h"
#include "endian.h"
#include "chunks.h"
#include "asmdef.h"
#include "asmsub.h"
static Word LenSoFar;
static LongInt RecPos,LenPos;
#define CodeBufferSize 512
static Word CodeBufferFill;
static Byte CodeBuffer[CodeBufferSize+1];
/**
static Boolean Write2(void *Buffer)
BEGIN
Boolean OK;
if (BigEndian) WSwap(Buffer,2);
OK=(fwrite(Buffer,1,2,PrgFile)==2);
if (BigEndian) WSwap(Buffer,2);
return OK;
END
static Boolean Write4(void *Buffer)
BEGIN
Boolean OK;
if (BigEndian) DSwap(Buffer,4);
OK=(fwrite(Buffer,1,4,PrgFile)==4);
if (BigEndian) DSwap(Buffer,4);
return OK;
END
**/
static void FlushBuffer(void)
BEGIN
if (CodeBufferFill>0)
BEGIN
if (fwrite(CodeBuffer,1,CodeBufferFill,PrgFile)!=CodeBufferFill) ChkIO(10004);
CodeBufferFill=0;
END
END
void DreheCodes(void)
BEGIN
int z;
LongInt l=CodeLen*Granularity();
switch (ActListGran)
BEGIN
case 2:
for (z=0; z<(l>>1); z++)
WAsmCode[z]=((WAsmCode[z]&0xff)<<8)+((WAsmCode[z]&0xff00)>>8);
break;
case 4:
for (z=0; z<(l>>2); z++)
{
#ifdef __STDC__
DAsmCode[z]=((DAsmCode[z]&0xff000000u)>>24)+
((DAsmCode[z]&0x00ff0000u)>>8)+
((DAsmCode[z]&0x0000ff00u)<<8)+
((DAsmCode[z]&0x000000ffu)<<24);
#else
DAsmCode[z]=((DAsmCode[z]&0xff000000)>>24)+
((DAsmCode[z]&0x00ff0000)>>8)+
((DAsmCode[z]&0x0000ff00)<<8)+
((DAsmCode[z]&0x000000ff)<<24);
#endif
}
break;
END
END
/*--- neuen Record in Codedatei anlegen. War der bisherige leer, so wird ---
---- dieser ueberschrieben. ------------------------------------------------*/
static void WrRecHeader(void)
BEGIN
Byte b;
if (ActPC!=SegCode)
BEGIN
b=FileHeaderDataRec; if (fwrite(&b,1,1,PrgFile)!=1) ChkIO(10004);
END
if (fwrite(&HeaderID,1,1,PrgFile)!=1) ChkIO(10004);
if (ActPC!=SegCode)
BEGIN
b=ActPC; if (fwrite(&b,1,1,PrgFile)!=1) ChkIO(10004);
b=Grans[ActPC]; if (fwrite(&b,1,1,PrgFile)!=1) ChkIO(10004);
END
END
void NewRecord(LargeWord NStart)
BEGIN
LongInt h;
LongWord PC;
FlushBuffer();
if (LenSoFar==0)
BEGIN
if (fseek(PrgFile,RecPos,SEEK_SET)!=0) ChkIO(10003);
WrRecHeader();
h=NStart;
if (NOT Write4(PrgFile,&h)) ChkIO(10004);
LenPos=ftell(PrgFile);
if (NOT Write2(PrgFile,&LenSoFar)) ChkIO(10004);
END
else
BEGIN
h=ftell(PrgFile);
if (fseek(PrgFile,LenPos,SEEK_SET)!=0) ChkIO(10003);
if (NOT Write2(PrgFile,&LenSoFar)) ChkIO(10004);
if (fseek(PrgFile,h,SEEK_SET)!=0) ChkIO(10003);
RecPos=h; LenSoFar=0;
WrRecHeader();
PC=NStart;
if (NOT Write4(PrgFile,&PC)) ChkIO(10004);
LenPos=ftell(PrgFile);
if (NOT Write2(PrgFile,&LenSoFar)) ChkIO(10004);
END
END
/*--- Codedatei eroeffnen --------------------------------------------------*/
void OpenFile(void)
BEGIN
Word h;
errno=0;
PrgFile=fopen(OutName,OPENWRMODE);
if (PrgFile==Nil) ChkIO(10001);
errno=0; h=FileMagic;
if (NOT Write2(PrgFile,&h)) ChkIO(10004);
CodeBufferFill=0;
RecPos=ftell(PrgFile); LenSoFar=0;
NewRecord(PCs[ActPC]);
END
/*---- Codedatei schliessen -------------------------------------------------*/
void CloseFile(void)
BEGIN
Byte Head;
String h;
LongWord Adr;
sprintf(h,"AS %s/%s-%s",Version,ARCHPRNAME,ARCHSYSNAME);
NewRecord(PCs[ActPC]);
fseek(PrgFile,RecPos,SEEK_SET);
if (StartAdrPresent)
BEGIN
Head=FileHeaderStartAdr;
if (fwrite(&Head,sizeof(Head),1,PrgFile)!=1) ChkIO(10004);
Adr=StartAdr;
if (NOT Write4(PrgFile,&Adr)) ChkIO(10004);
END
Head=FileHeaderEnd;
if (fwrite(&Head,sizeof(Head),1,PrgFile)!=1) ChkIO(10004);
if (fwrite(h,1,strlen(h),PrgFile)!=strlen(h)) ChkIO(10004);
fclose(PrgFile); if (Magic!=0) unlink(OutName);
END
/*--- erzeugten Code einer Zeile in Datei ablegen ---------------------------*/
void WriteBytes(void)
BEGIN
Word ErgLen;
if (CodeLen==0) return; ErgLen=CodeLen*Granularity();
if ((TurnWords!=0)!=(BigEndian!=0)) DreheCodes();
if (((LongInt)LenSoFar)+((LongInt)ErgLen)>0xffff) NewRecord(PCs[ActPC]);
if (CodeBufferFill+ErgLen<CodeBufferSize)
BEGIN
memcpy(CodeBuffer+CodeBufferFill,BAsmCode,ErgLen);
CodeBufferFill+=ErgLen;
END
else
BEGIN
FlushBuffer();
if (ErgLen<CodeBufferSize)
BEGIN
memcpy(CodeBuffer,BAsmCode,ErgLen); CodeBufferFill=ErgLen;
END
else if (fwrite(BAsmCode,1,ErgLen,PrgFile)!=ErgLen) ChkIO(10004);
END
LenSoFar+=ErgLen;
if ((TurnWords!=0)!=(BigEndian!=0)) DreheCodes();
END
void RetractWords(Word Cnt)
BEGIN
Word ErgLen;
ErgLen=Cnt*Granularity();
if (LenSoFar<ErgLen)
BEGIN
WrError(1950); return;
END
if (MakeUseList) DeleteChunk(SegChunks+ActPC,ProgCounter()-Cnt,Cnt);
PCs[ActPC]-=Cnt;
if (CodeBufferFill>=ErgLen) CodeBufferFill-=ErgLen;
else
BEGIN
if (fseek(PrgFile,-(ErgLen-CodeBufferFill),SEEK_CUR)==-1)
ChkIO(10004);
CodeBufferFill=0;
END
LenSoFar-=ErgLen;
Retracted=True;
END
void asmcode_init(void)
BEGIN
END
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