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The reading of the input is now machine independent.

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em 1985-04-22 15:13:24 +00:00
parent 89a37681fc
commit a0a7a48c3b
1 changed files with 65 additions and 3 deletions
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68
mach/m68k2/cv/cv.prev.c
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@ -1,6 +1,10 @@
#include <stdio.h>
#include "out.h"
#ifndef NORCSID
static char rcs_id[] = "$Header$" ;
#endif
#define ASSERT(x) switch (2) { case 0: case (x): ; }
/*
@ -12,6 +16,8 @@ struct outsect outsect[S_MAX];
char *output_file;
int output_file_created;
char *program ;
main(argc, argv)
int argc;
char *argv[];
@ -25,6 +31,7 @@ main(argc, argv)
ASSERT(sizeof(struct outsect) == SZ_SECT);
input = stdin; output = stdout;
program= argv[0] ;
switch (argc) {
case 1: break;
case 3: if ((output = fopen(argv[2], "w")) == (FILE *)0)
@ -37,15 +44,16 @@ main(argc, argv)
break;
default:fatal("Usage: %s <as object> <dl object>.\n", argv[0]);
}
if (fread((char *)&outhead, SZ_HEAD, 1, input) != 1)
if ( !rhead(input,&outhead) )
fatal("Reading header failed.\n");
if (BADMAGIC(outhead))
fatal("Not an ack object file.\n");
if (outhead.oh_nrelo > 0)
fprintf(stderr, "Warning: relocation information present.\n");
for ( nsect=0 ; nsect<outhead.oh_nsect ; nsect++ )
if ( !rsect(input,&outsect[nsect]) )
fatal("Reading section table failed.\n");
nsect = outhead.oh_nsect;
if (fread((char *)outsect, SZ_SECT, nsect, input) != nsect)
fatal("Reading section table failed.\n");
sectp = outsect;
while (nsect--) {
register long flen;
@ -93,10 +101,64 @@ main(argc, argv)
exit(0);
}
rhead(f,head) struct outhead *head ; FILE *f ; {
char buf[SZ_HEAD] ;
if ( fread(buf,SZ_HEAD,1,f)!=1 ) return 0 ;
iconvert(buf,(char *)head,SF_HEAD) ;
return 1 ;
}
rsect(f,sect) struct outsect *sect ; FILE *f ; {
char buf[SZ_SECT] ;
if ( fread(buf,SZ_SECT,1,f)!=1 ) return 0 ;
iconvert(buf,(char *)sect,SF_SECT) ;
return 1 ;
}
rrelo(f,relo) struct outrelo *relo ; FILE *f ; {
char buf[SZ_RELO] ;
if ( fread(buf,SZ_RELO,1,f)!=1 ) return 0 ;
iconvert(buf,(char *)relo,SF_RELO) ;
return 1 ;
}
rname(f,name) struct outname *name ; FILE *f ; {
char buf[SZ_NAME] ;
if ( fread(buf,SZ_NAME,1,f)!=1 ) return 0 ;
iconvert(buf,(char *)name,SF_NAME) ;
return 1 ;
}
iconvert(buf,str,fmt) char *buf, *str, *fmt ; {
register char *nf, *ni, *no ;
int last, i ;
long value ;
ni=buf ; no=str ; nf=fmt ;
while ( last = *nf++ ) {
last -= '0' ;
if ( last<1 || last >9 ) fatal("illegal out.h format string\n");
value=0 ;
i=last ;
while ( i-- ) {
value = (value<<8) + (ni[i]&0xFF) ;
}
switch ( last ) {
case 0 : break ;
case 1 : *no= value ; break ;
case 2 : *(unsigned short *)no = value ; break ;
case 4 : *(long *)no = value ; break ;
default :
fatal("illegal out.h format string\n");
}
ni += last ; no += last ;
}
}
/* VARARGS1 */
fatal(s, a1, a2)
char *s;
{
fprintf(stderr,"%s: ",program) ;
fprintf(stderr, s, a1, a2);
if (output_file_created)
unlink(output_file);