375 lines
8.9 KiB
C
375 lines
8.9 KiB
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "out.h"
|
|
|
|
#ifndef NORCSID
|
|
static char rcs_id[] = "$Header$" ;
|
|
#endif
|
|
|
|
/* BUG:
|
|
There is a problem with Bleasdale 'nm' and the namelist produced
|
|
by this program.
|
|
nm always acts as if there were no name list, while adb
|
|
understands a.out's with namelists without any complaint.
|
|
The cause is unclear. All sizes in the header and file are correct.
|
|
Setting the symbol table size to a size smaller than actually
|
|
present in the a.out causes 'adb' to produce error messages
|
|
about name list problems, but nm suddenly prints the namelist,
|
|
INCLUDING the entrie outside the size indicated in the a.out header.
|
|
*/
|
|
#define ASSERT(x) switch (2) { case 0: case (x): ; }
|
|
|
|
/*
|
|
* Header and section table of new format object file.
|
|
*/
|
|
struct outhead outhead;
|
|
struct outsect outsect[S_MAX];
|
|
char *stringarea ;
|
|
|
|
char *ofile;
|
|
int ofile_created;
|
|
|
|
char *program ;
|
|
|
|
char flag ;
|
|
|
|
#define readf(a, b, c) fread((a), (b), (int)(c), input)
|
|
#define writef(a, b, c) fwrite((a), (b), (int)(c), output)
|
|
|
|
/* Output file definitions and such */
|
|
|
|
#define HDR_LENGTH 32
|
|
|
|
char hdr[HDR_LENGTH] ;
|
|
|
|
#define TEXT 0
|
|
#define ROM 1
|
|
#define DATA 2
|
|
#define BSS 3
|
|
#define LSECT BSS+1
|
|
#define NSECT LSECT+1
|
|
|
|
|
|
#define N_EXT 040
|
|
#define N_UNDEF 00
|
|
#define N_ABS 01
|
|
#define N_TEXT 02
|
|
#define N_DATA 03
|
|
#define N_BSS 04
|
|
#define N_FN 037
|
|
|
|
FILE *input;
|
|
FILE *output;
|
|
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
register int nsect;
|
|
long magic ;
|
|
long textsize ;
|
|
long datasize ;
|
|
|
|
ASSERT(sizeof(struct outhead) == SZ_HEAD);
|
|
ASSERT(sizeof(struct outsect) == SZ_SECT);
|
|
|
|
input = stdin; output = stdout;
|
|
program= argv[0] ;
|
|
if ( argc>1 && argv[1][0]=='-' ) {
|
|
flag=argv[1][1] ;
|
|
argc-- ; argv++ ;
|
|
}
|
|
switch (argc) {
|
|
case 1: break;
|
|
case 3: if ((output = fopen(argv[2], "w")) == (FILE *)0)
|
|
fatal("Can't write %s.\n", argv[2]);
|
|
ofile = argv[2];
|
|
ofile_created = 1;
|
|
/* FALLTHROUGH */
|
|
case 2: if ((input = fopen(argv[1], "r")) == (FILE *)0)
|
|
fatal("Can't read %s.\n", argv[1]);
|
|
break;
|
|
default:fatal("Usage: %s <as object> <dl object>.\n", argv[0]);
|
|
}
|
|
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");
|
|
if ( outhead.oh_nsect!=LSECT && outhead.oh_nsect!=NSECT )
|
|
fatal("Input file must have %d sections, not %ld\n",
|
|
NSECT,outhead.oh_nsect) ;
|
|
for ( nsect=0 ; nsect<outhead.oh_nsect ; nsect++ )
|
|
if ( !rsect(input,&outsect[nsect]) )
|
|
fatal("Reading section table failed.\n");
|
|
/* A few checks */
|
|
if ( outsect[TEXT].os_base != 0x20000 )
|
|
fatal("text must start at 0x20000 not at 0x%lx\n",
|
|
outsect[TEXT].os_base) ;
|
|
if ( outsect[BSS].os_flen != 0 )
|
|
fatal("bss space contains initialized data\n") ;
|
|
if ( outsect[BSS].os_base != outsect[DATA].os_base+
|
|
outsect[DATA].os_size )
|
|
fatal("bss segment must follow data segment\n") ;
|
|
if ( outsect[ROM].os_lign == 0x8000 ) {
|
|
/* 410 file with ROM in data space */
|
|
magic= 0410 ;
|
|
textsize= outsect[TEXT].os_size ;
|
|
datasize= outsect[ROM].os_size + outsect[DATA].os_size ;
|
|
if ( outsect[DATA].os_base != outsect[ROM].os_base+
|
|
outsect[ROM].os_size )
|
|
fatal("data segment must follow rom\n") ;
|
|
} else
|
|
if ( outsect[DATA].os_lign == 0x8000 ) {
|
|
/* 410 file with ROM in instruction space */
|
|
magic= 0410 ;
|
|
textsize= outsect[TEXT].os_size + outsect[ROM].os_size ;
|
|
datasize= outsect[DATA].os_size ;
|
|
if ( outsect[ROM].os_base != outsect[TEXT].os_base+
|
|
outsect[TEXT].os_size )
|
|
fatal("rom segment must follow text\n") ;
|
|
} else {
|
|
/* Plain 407 file */
|
|
magic= 0407 ;
|
|
textsize= outsect[TEXT].os_size ;
|
|
datasize= outsect[ROM].os_size + outsect[DATA].os_size ;
|
|
if ( outsect[ROM].os_base != outsect[TEXT].os_base+
|
|
outsect[TEXT].os_size )
|
|
fatal("rom segment must follow text\n") ;
|
|
if ( outsect[DATA].os_base != outsect[ROM].os_base+
|
|
outsect[ROM].os_size )
|
|
fatal("data segment must follow rom\n") ;
|
|
}
|
|
if ( outhead.oh_nsect==NSECT ) {
|
|
if ( outsect[LSECT].os_base != outsect[BSS].os_base+
|
|
outsect[BSS].os_size )
|
|
fatal("end segment must follow bss\n") ;
|
|
if ( outsect[LSECT].os_size != 0 )
|
|
fatal("end segment must be empty\n") ;
|
|
}
|
|
|
|
/* Action at last */
|
|
fseek(output,(long)sizeof(hdr),0);
|
|
emits(&outsect[TEXT]) ;
|
|
emits(&outsect[ROM]) ;
|
|
emits(&outsect[DATA]) ;
|
|
names() ;
|
|
set4(hdr,0,magic) ;
|
|
set4(hdr,4,textsize) ;
|
|
set4(hdr,8,datasize) ;
|
|
set4(hdr,12,outsect[BSS].os_size) ;
|
|
set4(hdr,28,0x20000L) ; /* Entry point */
|
|
fseek(output,0L,0);
|
|
fwrite(hdr,sizeof(hdr),1,output);
|
|
if ( ferror(output) ) {
|
|
fatal("output write error\n") ;
|
|
}
|
|
if ( ofile_created ) chmod(argv[2],0755);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Transfer the emitted byted from one file to another.
|
|
* and zero fill the uninitialized space
|
|
*/
|
|
emits(section) struct outsect *section ; {
|
|
register long n ;
|
|
register int blk;
|
|
char buffer[BUFSIZ];
|
|
|
|
n= section->os_flen ;
|
|
while (n > 0) {
|
|
blk = n > BUFSIZ ? BUFSIZ : n;
|
|
readf(buffer, 1, blk);
|
|
writef(buffer, 1, blk);
|
|
n -= blk;
|
|
}
|
|
if ( section->os_flen!=section->os_size ) {
|
|
for ( n=BUFSIZ-1 ; n ; n-- ) buffer[n]=0 ;
|
|
n= section->os_size - section->os_flen ;
|
|
while (n > 0) {
|
|
blk = n > BUFSIZ ? BUFSIZ : n;
|
|
writef(buffer, 1, blk);
|
|
n -= blk;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copy the name table, except the last outhead.oh_nsect.
|
|
* These are assumed to be section names.
|
|
*
|
|
*/
|
|
names()
|
|
{
|
|
register ushort n = outhead.oh_nname - outhead.oh_nsect;
|
|
int type = 0 ;
|
|
struct outname outname ;
|
|
char buffer[100] ;
|
|
char *s1, *s2 ;
|
|
long length, fullength ;
|
|
|
|
fseek(input,OFF_CHAR(outhead),0) ;
|
|
chars() ;
|
|
if ( !stringarea ) return ;
|
|
fseek(input,OFF_NAME(outhead),0) ;
|
|
fullength=0 ; buffer[1]=0 ;
|
|
while (n--) {
|
|
rname(input,&outname) ;
|
|
if (outname.on_foff == 0)
|
|
continue ;
|
|
if (outname.on_type & S_ETC ) {
|
|
switch (outname.on_type & S_ETC ) {
|
|
/* ???
|
|
case S_FIL :
|
|
type |= N_FN ;
|
|
*/
|
|
case S_COM :
|
|
break ;
|
|
default :
|
|
continue ;
|
|
}
|
|
}
|
|
set4(buffer,2,outname.on_valu ) ;
|
|
switch (outname.on_type & S_TYP) {
|
|
case S_UND:
|
|
type = N_UNDEF;
|
|
break;
|
|
case S_ABS:
|
|
type = N_ABS;
|
|
break;
|
|
case S_MIN + TEXT:
|
|
type = N_TEXT;
|
|
break;
|
|
case S_MIN + DATA:
|
|
type = N_DATA;
|
|
break;
|
|
case S_MIN + BSS:
|
|
case S_MIN + LSECT:
|
|
type = N_BSS;
|
|
break ;
|
|
}
|
|
|
|
if (outname.on_type & S_EXT)
|
|
type |= N_EXT;
|
|
buffer[0]= type ;
|
|
s1=buffer+6 ; s2= stringarea+outname.on_foff-OFF_CHAR(outhead);
|
|
length= 6 ;
|
|
while ( (++length<sizeof buffer) && (*s1++ = *s2++) ) ;
|
|
buffer[sizeof buffer - 1]= 0 ; /* make sure of zero byte */
|
|
writef(buffer, length, 1);
|
|
fullength += length ;
|
|
}
|
|
/*
|
|
* The last outhead.oh_nsect names are discarded.
|
|
*/
|
|
fseek(input, (long)(SZ_NAME * outhead.oh_nsect), 1);
|
|
set4(hdr,16,fullength) ;
|
|
}
|
|
|
|
/*
|
|
* Grab the string area preceded by the long that indicates its size.
|
|
*
|
|
*/
|
|
chars()
|
|
{
|
|
register long n = outhead.oh_nchar;
|
|
register int blk;
|
|
char *curr ;
|
|
extern char *malloc() ;
|
|
|
|
if ( n==0 ) return ;
|
|
if ( (unsigned)n != n ) fatal("string table too large\n") ;
|
|
stringarea= malloc((unsigned)n) ;
|
|
if ( !stringarea ) fatal("string table too large\n") ;
|
|
|
|
curr= stringarea ;
|
|
while (n > 0) {
|
|
blk = n > BUFSIZ ? BUFSIZ : n;
|
|
readf(curr, 1, blk);
|
|
curr += blk ;
|
|
n -= blk;
|
|
}
|
|
}
|
|
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 ;
|
|
}
|
|
}
|
|
|
|
set2(buf,off,val) char *buf ; int val ; {
|
|
buf[off+0] = val>>8 ;
|
|
buf[off+1] = val ;
|
|
}
|
|
|
|
set4(buf,off,val) char *buf ; long val ; {
|
|
buf[off] = val>>24 ;
|
|
buf[off+1] = val>>16 ;
|
|
buf[off+2] = val>>8 ;
|
|
buf[off+3] = val ;
|
|
}
|
|
|
|
/* VARARGS1 */
|
|
fatal(s, a1, a2)
|
|
char *s;
|
|
{
|
|
fprintf(stderr,"%s: ",program) ;
|
|
fprintf(stderr, s, a1, a2);
|
|
if (ofile_created)
|
|
unlink(ofile);
|
|
exit(-1);
|
|
}
|