472 lines
11 KiB
C
472 lines
11 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".
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This program converts ack.out format to XENIX 3.0 x.out format.
|
|
* It uses ~em/modules/lib/libobject.a.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
struct xexec {
|
|
unsigned short x_magic;
|
|
#define XMAGIC 01006
|
|
unsigned short x_ext; /* 054 */
|
|
long x_text;
|
|
long x_data;
|
|
long x_bss;
|
|
long x_syms;
|
|
long x_reloc; /* 0 */
|
|
long x_entry; /* 0 */
|
|
char x_cpu;
|
|
#define XBSWAP 0x80
|
|
#define XWSWAP 0x40
|
|
#define X8086 0x04
|
|
#define X286 0x09
|
|
char x_relsym; /* 0144, not used */
|
|
unsigned short x_renv;
|
|
#define XV3 0x8000 /* after Xenix version 2.3 */
|
|
#define XVERS 0xc000 /* version mask */
|
|
#define XSEG 0x0800 /* segment table present */
|
|
#define XFS 0x0008 /* fixed stack */
|
|
#define XPURE 0x0004 /* pure text */
|
|
#define XSEP 0x0002 /* separate I & D */
|
|
#define XEXEC 0x0001 /* executable */
|
|
};
|
|
|
|
struct xext {
|
|
long xe_trsize, xe_drsize, xe_tbase, xe_dbase; /* 0 */
|
|
long xe_stksize;
|
|
long xe_segpos; /* 0140 ??? */
|
|
long xe_segsize; /* 2 or 3 segments */
|
|
/* one for name table, one for text+data
|
|
or one for text + one for data(-i)
|
|
*/
|
|
long xe_mdtpos, xe_mdtsize; /* 0 */
|
|
char xe_mdttype; /* 0 */
|
|
char xe_pagesize; /* 0 */
|
|
char xe_ostype; /* 1 */
|
|
char xe_osvers; /* 1 */
|
|
unsigned short xe_eseg; /* 077 ??? */
|
|
unsigned short xe_sres; /* 0 */
|
|
};
|
|
|
|
struct xseg {
|
|
unsigned short xs_type;
|
|
#define XTEXT 1
|
|
#define XDATA 2
|
|
#define XTSYMS 3
|
|
unsigned short xs_attr;
|
|
#define XAMEM 0x8000
|
|
#define X_ABSS 0x0004
|
|
#define X_APURE 0x0010
|
|
unsigned short xs_seg; /* 077 for text, 0107 for data, 0 for sym */
|
|
unsigned short xs_sres; /* 0 */
|
|
long xs_filpos;
|
|
long xs_psize;
|
|
long xs_vsize;
|
|
long xs_rbase; /* 0 */
|
|
long xs_lres; /* 0 */
|
|
long xs_lres2; /* 0 */
|
|
};
|
|
|
|
#include <out.h>
|
|
|
|
#ifndef NORCSID
|
|
static char rcs_id[] = "$Header$" ;
|
|
#endif
|
|
|
|
#define ENTRY 0x0L /* entry point */
|
|
|
|
/*
|
|
* Header and section table of new format object file.
|
|
*/
|
|
struct outhead outhead;
|
|
struct outsect outsect[S_MAX];
|
|
|
|
struct xexec exec;
|
|
struct xext ext;
|
|
struct xseg seg[3];
|
|
|
|
char *output_file;
|
|
int outputfile_created;
|
|
int output;
|
|
|
|
char *program ;
|
|
|
|
int sep_id;
|
|
|
|
extern long lseek();
|
|
#define TEXTSG 0
|
|
#define ROMSG 1
|
|
#define DATASG 2
|
|
#define BSSSG 3
|
|
#define LSECT BSSSG+1
|
|
#define NSECT LSECT+1
|
|
|
|
long emit_symtab();
|
|
|
|
long align(a,b)
|
|
long a,b;
|
|
{
|
|
a += b - 1;
|
|
return a - a % b;
|
|
}
|
|
|
|
int
|
|
follows(pa, pb)
|
|
register struct outsect *pa, *pb;
|
|
{
|
|
/* return 1 if pa follows pb */
|
|
|
|
return pa->os_base == align(pb->os_base+pb->os_size, pa->os_lign);
|
|
}
|
|
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
long stacksize = 0x1000;
|
|
|
|
output = 1;
|
|
program= argv[0] ;
|
|
if ( argc>1 && argv[1][0]=='-' ) {
|
|
if (argv[1][1] == 'F') {
|
|
register char *p = &argv[1][2];
|
|
|
|
stacksize = 0;
|
|
while (*p) {
|
|
stacksize <<= 4;
|
|
if (*p >= '0' && *p <= '9')
|
|
stacksize += *p - '0';
|
|
else if (*p >= 'a' && *p <= 'f')
|
|
stacksize += 10 + *p - 'a';
|
|
else if (*p >= 'A' && *p <= 'F')
|
|
stacksize += 10 + *p - 'A';
|
|
else fatal("Illegal -F option\n");
|
|
p++;
|
|
}
|
|
}
|
|
argc-- ; argv++ ;
|
|
}
|
|
switch (argc) {
|
|
case 1: rd_fdopen(0);
|
|
break;
|
|
case 3: if ((output = creat(argv[2], 0644)) < 0) {
|
|
fatal("Can't write %s.\n", argv[2]);
|
|
}
|
|
output_file = argv[2];
|
|
outputfile_created = 1;
|
|
/* FALLTHROUGH */
|
|
case 2:
|
|
if (! rd_open(argv[1]))
|
|
fatal("Can't read %s.\n", argv[1]);
|
|
break;
|
|
default:fatal("Usage: %s <ACK object> <Xenix object>.\n", argv[0]);
|
|
}
|
|
rd_ohead(&outhead);
|
|
if (BADMAGIC(outhead))
|
|
fatal("Not an ack object file.\n");
|
|
if (outhead.oh_flags & HF_LINK)
|
|
fatal("Contains unresolved references.\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) ;
|
|
rd_sect(outsect, outhead.oh_nsect);
|
|
/* A few checks */
|
|
if ( outsect[TEXTSG].os_base != ENTRY)
|
|
fatal("text must start at 0x%lx not at 0x%lx\n", ENTRY,
|
|
outsect[TEXTSG].os_base) ;
|
|
if ( outsect[BSSSG].os_flen != 0 )
|
|
fatal("bss space contains initialized data\n") ;
|
|
if (! follows(&outsect[BSSSG], &outsect[DATASG]))
|
|
fatal("bss segment must follow data segment\n") ;
|
|
if (! follows(&outsect[DATASG], &outsect[ROMSG]))
|
|
fatal("bss segment must follow data segment\n") ;
|
|
|
|
outsect[ROMSG].os_size = outsect[DATASG].os_base - outsect[ROMSG].os_base;
|
|
outsect[DATASG].os_size = outsect[BSSSG].os_base - outsect[DATASG].os_base;
|
|
exec.x_magic = XMAGIC;
|
|
exec.x_ext = 054;
|
|
exec.x_data = outsect[ROMSG].os_size + outsect[DATASG].os_size;
|
|
exec.x_bss = outsect[BSSSG].os_size;
|
|
exec.x_entry = outsect[TEXTSG].os_base;
|
|
exec.x_cpu = XWSWAP | X286;
|
|
exec.x_relsym = 0144;
|
|
exec.x_renv = XV3 | XSEG | XFS | XEXEC;
|
|
if ( outsect[ROMSG].os_base == 0x0 ) {
|
|
/* Separate I/D */
|
|
outsect[TEXTSG].os_size = align(outsect[TEXTSG].os_size, 2L);
|
|
sep_id = 1;
|
|
exec.x_renv |= XPURE | XSEP;
|
|
} else {
|
|
if (! follows(&outsect[ROMSG], &outsect[TEXTSG]))
|
|
fatal("bss segment must follow data segment\n") ;
|
|
outsect[TEXTSG].os_size = outsect[ROMSG].os_base - outsect[TEXTSG].os_base;
|
|
}
|
|
exec.x_text = outsect[TEXTSG].os_size;
|
|
if ( outhead.oh_nsect==NSECT ) {
|
|
if (! follows(&outsect[LSECT], &outsect[BSSSG]))
|
|
fatal("bss segment must follow data segment\n") ;
|
|
if ( outsect[LSECT].os_size != 0 )
|
|
fatal("end segment must be empty\n") ;
|
|
}
|
|
ext.xe_stksize = stacksize;
|
|
/* Not too big, because "brk" and "sbrk"-allocated memory resides
|
|
above the stack!
|
|
*/
|
|
ext.xe_segpos = 0140;
|
|
ext.xe_segsize = (2 + sep_id) * 040;
|
|
ext.xe_ostype = 1;
|
|
ext.xe_osvers = 1;
|
|
ext.xe_eseg = 077;
|
|
seg[0].xs_type = XDATA;
|
|
seg[0].xs_attr = XAMEM | X_ABSS;
|
|
seg[0].xs_seg = 0107;
|
|
seg[1].xs_type = XTSYMS;
|
|
seg[1].xs_attr = 1; /* ??? */
|
|
seg[1].xs_filpos = 0140 + ext.xe_segsize + outsect[TEXTSG].os_size +
|
|
outsect[DATASG].os_size + outsect[ROMSG].os_size;
|
|
if (sep_id) {
|
|
seg[2] = seg[1];
|
|
seg[1] = seg[0];
|
|
seg[0].xs_type = XTEXT;
|
|
seg[0].xs_attr = XAMEM | X_APURE;
|
|
seg[0].xs_seg = 077;
|
|
seg[0].xs_filpos = 0300;
|
|
seg[0].xs_psize = seg[0].xs_vsize = outsect[TEXTSG].os_size;
|
|
seg[1].xs_filpos = seg[0].xs_filpos + seg[0].xs_psize;
|
|
seg[1].xs_psize = outsect[ROMSG].os_size + outsect[DATASG].os_size;
|
|
seg[1].xs_vsize = seg[1].xs_psize + outsect[BSSSG].os_size;
|
|
}
|
|
else {
|
|
seg[0].xs_filpos = 0240L;
|
|
seg[0].xs_psize = outsect[TEXTSG].os_size +
|
|
outsect[ROMSG].os_size +
|
|
outsect[DATASG].os_size;
|
|
seg[0].xs_vsize = seg[0].xs_psize + outsect[BSSSG].os_size;
|
|
}
|
|
lseek(output, seg[0].xs_filpos + outsect[TEXTSG].os_size +
|
|
outsect[DATASG].os_size + outsect[ROMSG].os_size, 0);
|
|
if (! (exec.x_syms = seg[1+sep_id].xs_psize = emit_symtab())) {
|
|
/* not enough memory to produce symbol table, do without */
|
|
fprintf(stderr, "%s: warning: no symbol table produced\n",
|
|
program);
|
|
ext.xe_segsize -= 040;
|
|
seg[1+sep_id].xs_type = 0;
|
|
seg[0].xs_filpos -= 040;
|
|
seg[1].xs_filpos -= 040;
|
|
}
|
|
lseek(output, seg[0].xs_filpos, 0);
|
|
|
|
emits(&outsect[TEXTSG]) ;
|
|
emits(&outsect[ROMSG]) ;
|
|
emits(&outsect[DATASG]) ;
|
|
|
|
lseek(output, 0L, 0);
|
|
header();
|
|
|
|
if ( outputfile_created ) chmod(argv[2],0755);
|
|
exit(0);
|
|
}
|
|
|
|
#define shortcvt(val, p) (*p++ = val, *p++ = val >> 8)
|
|
#define longcvt(val, p) (*p++ = val, *p++ = val >> 8, *p++ = val >> 16, *p++ = val >> 24)
|
|
|
|
char buf[0300];
|
|
|
|
header()
|
|
{
|
|
register char *p = buf;
|
|
register int i;
|
|
|
|
shortcvt(exec.x_magic, p);
|
|
shortcvt(exec.x_ext, p);
|
|
longcvt(exec.x_text, p);
|
|
longcvt(exec.x_data, p);
|
|
longcvt(exec.x_bss, p);
|
|
longcvt(exec.x_syms, p);
|
|
longcvt(exec.x_reloc, p);
|
|
longcvt(exec.x_entry, p);
|
|
*p++ = exec.x_cpu;
|
|
*p++ = exec.x_relsym;
|
|
shortcvt(exec.x_renv, p);
|
|
|
|
longcvt(ext.xe_trsize, p);
|
|
longcvt(ext.xe_drsize, p);
|
|
longcvt(ext.xe_tbase, p);
|
|
longcvt(ext.xe_dbase, p);
|
|
longcvt(ext.xe_stksize, p);
|
|
longcvt(ext.xe_segpos, p);
|
|
longcvt(ext.xe_segsize, p);
|
|
longcvt(ext.xe_mdtpos, p);
|
|
longcvt(ext.xe_mdtsize, p);
|
|
*p++ = ext.xe_mdttype;
|
|
*p++ = ext.xe_pagesize;
|
|
*p++ = ext.xe_ostype;
|
|
*p++ = ext.xe_osvers;
|
|
shortcvt(ext.xe_eseg, p);
|
|
shortcvt(ext.xe_sres, p);
|
|
|
|
p = &buf[0140];
|
|
for (i = 0; i <= 2 && seg[i].xs_type != 0; i++) {
|
|
shortcvt(seg[i].xs_type, p);
|
|
shortcvt(seg[i].xs_attr, p);
|
|
shortcvt(seg[i].xs_seg, p);
|
|
shortcvt(seg[i].xs_sres, p);
|
|
longcvt(seg[i].xs_filpos, p);
|
|
longcvt(seg[i].xs_psize, p);
|
|
longcvt(seg[i].xs_vsize, p);
|
|
longcvt(seg[i].xs_rbase, p);
|
|
longcvt(seg[i].xs_lres, p);
|
|
longcvt(seg[i].xs_lres2, p);
|
|
}
|
|
|
|
write(output, buf, 0140 + i * 040);
|
|
}
|
|
|
|
/*
|
|
* Transfer the emitted byted from one file to another.
|
|
*/
|
|
emits(section) struct outsect *section ; {
|
|
register long n ;
|
|
register int blk;
|
|
char buffer[BUFSIZ];
|
|
|
|
n= section->os_flen ;
|
|
rd_outsect(section - outsect);
|
|
while (n > 0) {
|
|
blk = n > BUFSIZ ? BUFSIZ : n;
|
|
rd_emit(buffer, (long) blk);
|
|
write(output, buffer, blk);
|
|
n -= blk;
|
|
}
|
|
if ((n = section->os_size - section->os_flen) > 0) {
|
|
for (blk = BUFSIZ - 1; blk >= 0; blk--) {
|
|
buffer[blk] = 0;
|
|
}
|
|
while (n > 0) {
|
|
blk = n > BUFSIZ ? BUFSIZ : n;
|
|
write(output, buffer, blk);
|
|
n -= blk;
|
|
}
|
|
}
|
|
}
|
|
|
|
long
|
|
emit_symtab()
|
|
{
|
|
register unsigned short i;
|
|
struct xnm {
|
|
unsigned short s_type, s_seg;
|
|
long s_value;
|
|
} xnm;
|
|
char *chars, *xname;
|
|
struct outname *names;
|
|
register char *xptr;
|
|
extern char *malloc();
|
|
long off = OFF_CHAR(outhead);
|
|
register char *p;
|
|
|
|
chars = malloc((unsigned)(outhead.oh_nchar));
|
|
if (! chars) return 0;
|
|
names = (struct outname *)
|
|
malloc(outhead.oh_nname * sizeof(struct outname));
|
|
if (! names) {
|
|
free(chars);
|
|
return 0;
|
|
}
|
|
xptr = malloc((unsigned)(outhead.oh_nchar) + 9 * outhead.oh_nname);
|
|
if (! xptr) {
|
|
free(chars);
|
|
free((char *) names);
|
|
return 0;
|
|
}
|
|
xname = xptr;
|
|
rd_name(names, outhead.oh_nname);
|
|
rd_string(chars,outhead.oh_nchar);
|
|
for (i = 0; i < outhead.oh_nname; i++) {
|
|
xnm.s_seg = 077;
|
|
switch(names[i].on_type & S_ETC) {
|
|
case S_FIL:
|
|
case S_MOD:
|
|
xnm.s_type = 0x1f;
|
|
break;
|
|
case S_SCT:
|
|
xnm.s_type = 0x8;
|
|
if ((names[i].on_type & S_TYP) != S_MIN+TEXTSG) {
|
|
xnm.s_seg = 0107;
|
|
}
|
|
break;
|
|
default:
|
|
switch(names[i].on_type & S_TYP) {
|
|
case S_UND:
|
|
xnm.s_type = 0;
|
|
break;
|
|
case S_ABS:
|
|
xnm.s_type = 1;
|
|
xnm.s_seg = 0107;
|
|
break;
|
|
case S_MIN + TEXTSG:
|
|
xnm.s_type = 2;
|
|
break;
|
|
case S_MIN + ROMSG:
|
|
case S_MIN + DATASG:
|
|
xnm.s_type = 3;
|
|
xnm.s_seg = 0107;
|
|
break;
|
|
case S_MIN + BSSSG:
|
|
case S_MIN + LSECT:
|
|
xnm.s_type = 4;
|
|
xnm.s_seg = 0107;
|
|
break;
|
|
default:
|
|
fprintf(stderr,"warning: unknown s_type: %d\n",
|
|
(int)(names[i].on_type) & S_TYP);
|
|
}
|
|
}
|
|
if (names[i].on_type & S_EXT) xnm.s_type |= 0x20;
|
|
xnm.s_value = names[i].on_valu;
|
|
if (names[i].on_foff == 0) {
|
|
}
|
|
else {
|
|
long l = names[i].on_foff - off;
|
|
if (l < 0 || l >= outhead.oh_nchar) {
|
|
fatal("bad on_off: %ld\n",l);
|
|
}
|
|
p = &chars[l];
|
|
shortcvt(xnm.s_type, xptr);
|
|
shortcvt(xnm.s_seg, xptr);
|
|
longcvt(xnm.s_value, xptr);
|
|
do {
|
|
*xptr++ = *p;
|
|
} while (*p++);
|
|
}
|
|
}
|
|
write(output, xname, xptr - xname);
|
|
free(xname);
|
|
free((char *) names);
|
|
free(chars);
|
|
return xptr - xname;
|
|
}
|
|
|
|
/* VARARGS1 */
|
|
fatal(s, a1, a2)
|
|
char *s;
|
|
{
|
|
fprintf(stderr,"%s: ",program) ;
|
|
fprintf(stderr, s, a1, a2);
|
|
if (outputfile_created)
|
|
unlink(output_file);
|
|
exit(1);
|
|
}
|
|
|
|
rd_fatal()
|
|
{
|
|
fatal("read error\n");
|
|
}
|