165 lines
2.2 KiB
C
165 lines
2.2 KiB
C
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/*
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* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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*
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* This product is part of the Amsterdam Compiler Kit.
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*
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* Permission to use, sell, duplicate or disclose this software must be
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* obtained in writing. Requests for such permissions may be sent to
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*
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* Dr. Andrew S. Tanenbaum
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* Wiskundig Seminarium
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* Vrije Universiteit
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* Postbox 7161
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* 1007 MC Amsterdam
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* The Netherlands
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*
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*/
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#include <sgtty.h>
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#include <stdio.h>
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#include <assert.h>
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struct sgttyb tty;
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#define DATTYPE 0
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#define EOFTYPE 1
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#define SEGTYPE 2
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#define PCTYPE 3
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#define MAXBYTE 0x18
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int check;
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int records;
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int echo;
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int bytecount;
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int ttyfd;
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char *progname;
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char hex[] = "0123456789ABCDEF";
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main(argc,argv) char **argv; {
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register nd,pc,sg,osg,first;
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register char *s;
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progname = argv[0];
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if (argc > 3)
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fatal("usage: %s [object [tty]]\n",argv[0]);
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s = "a.out";
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if (argc >= 2)
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s = argv[1];
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if (freopen(s,"r",stdin) == NULL)
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fatal("can't open %s",s);
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ttyfd = 1;
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first = 1; osg = 0;
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for (;;) {
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pc = get2c(stdin);
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if (feof(stdin))
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break;
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sg = get2c(stdin);
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nd = get2c(stdin);
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if (first) {
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first = 0;
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}
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assert(sg == osg);
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while (nd > MAXBYTE) {
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data(MAXBYTE,pc);
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nd -= MAXBYTE;
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pc += MAXBYTE;
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}
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if (nd > 0)
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data(nd,pc);
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assert(feof(stdin) == 0);
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}
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if (first == 0)
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eof();
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if (echo)
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for (;;)
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reply();
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}
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data(nd,pc) {
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newline(nd,pc,DATTYPE);
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do
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byte(getc(stdin));
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while (--nd);
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endline();
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}
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eof() {
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newline(0,records,EOFTYPE);
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endline();
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}
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newline(n,pc,typ) {
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records++;
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put(';');
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byte(n);
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check = 0;
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bytecount = n+4;
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word(pc);
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}
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endline() {
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word(check);
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put('\r');
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put('\n');
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assert(bytecount == 0);
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put(0);
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put(0);
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put(0);
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put(0);
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put(0);
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put(0);
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}
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word(w) {
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byte(w>>8);
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byte(w);
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}
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byte(b) {
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b &= 0377;
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check += b;
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--bytecount;
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put(hex[(b>>4) & 017]);
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put(hex[b & 017]);
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}
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put(c) {
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write(ttyfd,&c,1);
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}
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reply() {
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register i;
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int c;
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if (echo == 0)
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return;
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i = read(ttyfd,&c,1);
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assert(i > 0);
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write(1,&c,1);
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}
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get2c(f) FILE *f; {
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register c;
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c = getc(f);
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return((getc(f) << 8) | c);
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}
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fatal(s,a) {
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fprintf(stderr,"%s: ",progname);
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fprintf(stderr,s,a);
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fprintf(stderr,"\n");
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exit(-1);
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}
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