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nasm/outobj.c
H. Peter Anvin 76690a12ad NASM 0.96
2002-04-30 20:52:49 +00:00

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/* outobj.c output routines for the Netwide Assembler to produce
* Microsoft 16-bit .OBJ object files
*
* The Netwide Assembler is copyright (C) 1996 Simon Tatham and
* Julian Hall. All rights reserved. The software is
* redistributable under the licence given in the file "Licence"
* distributed in the NASM archive.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "nasm.h"
#include "nasmlib.h"
#include "outform.h"
#ifdef OF_OBJ
static char obj_infile[FILENAME_MAX];
static int obj_uppercase;
static efunc error;
static evalfunc evaluate;
static ldfunc deflabel;
static FILE *ofp;
static long first_seg;
static int any_segs;
#define LEDATA_MAX 1024 /* maximum size of LEDATA record */
#define RECORD_MAX 1024 /* maximum size of _any_ record */
#define GROUP_MAX 256 /* we won't _realistically_ have more
* than this many segs in a group */
#define EXT_BLKSIZ 256 /* block size for externals list */
static unsigned char record[RECORD_MAX], *recptr;
struct Segment; /* need to know these structs exist */
struct Group;
static struct Public {
struct Public *next;
char *name;
long offset;
long segment; /* only if it's far-absolute */
} *fpubhead, **fpubtail;
static struct External {
struct External *next;
char *name;
long commonsize;
long commonelem; /* element size if FAR, else zero */
int index; /* OBJ-file external index */
enum {
DEFWRT_NONE, /* no unusual default-WRT */
DEFWRT_STRING, /* a string we don't yet understand */
DEFWRT_SEGMENT, /* a segment */
DEFWRT_GROUP /* a group */
} defwrt_type;
union {
char *string;
struct Segment *seg;
struct Group *grp;
} defwrt_ptr;
struct External *next_dws; /* next with DEFWRT_STRING */
} *exthead, **exttail, *dws;
static int externals;
static struct ExtBack {
struct ExtBack *next;
struct External *exts[EXT_BLKSIZ];
} *ebhead, **ebtail;
static struct Segment {
struct Segment *next;
long index; /* the NASM segment id */
long obj_index; /* the OBJ-file segment index */
struct Group *grp; /* the group it belongs to */
long currentpos;
long align; /* can be SEG_ABS + absolute addr */
enum {
CMB_PRIVATE = 0,
CMB_PUBLIC = 2,
CMB_STACK = 5,
CMB_COMMON = 6
} combine;
long use32; /* is this segment 32-bit? */
struct Public *pubhead, **pubtail;
char *name;
char *segclass, *overlay; /* `class' is a C++ keyword :-) */
} *seghead, **segtail, *obj_seg_needs_update;
static struct Group {
struct Group *next;
char *name;
long index; /* NASM segment id */
long obj_index; /* OBJ-file group index */
long nentries; /* number of elements... */
long nindices; /* ...and number of index elts... */
union {
long index;
char *name;
} segs[GROUP_MAX]; /* ...in this */
} *grphead, **grptail, *obj_grp_needs_update;
static struct ObjData {
struct ObjData *next;
int nonempty;
struct Segment *seg;
long startpos;
int letype, ftype;
unsigned char ledata[LEDATA_MAX], *lptr;
unsigned char fixupp[RECORD_MAX], *fptr;
} *datahead, *datacurr, **datatail;
static struct ImpDef {
struct ImpDef *next;
char *extname;
char *libname;
unsigned int impindex;
char *impname;
} *imphead, **imptail;
static struct ExpDef {
struct ExpDef *next;
char *intname;
char *extname;
unsigned int ordinal;
int flags;
} *exphead, **exptail;
#define EXPDEF_FLAG_ORDINAL 0x80
#define EXPDEF_FLAG_RESIDENT 0x40
#define EXPDEF_FLAG_NODATA 0x20
#define EXPDEF_MASK_PARMCNT 0x1F
static long obj_entry_seg, obj_entry_ofs;
enum RecordID { /* record ID codes */
THEADR = 0x80, /* module header */
COMENT = 0x88, /* comment record */
LNAMES = 0x96, /* list of names */
SEGDEF = 0x98, /* segment definition */
GRPDEF = 0x9A, /* group definition */
EXTDEF = 0x8C, /* external definition */
PUBDEF = 0x90, /* public definition */
COMDEF = 0xB0, /* common definition */
LEDATA = 0xA0, /* logical enumerated data */
FIXUPP = 0x9C, /* fixups (relocations) */
MODEND = 0x8A /* module end */
};
extern struct ofmt of_obj;
static long obj_ledata_space(struct Segment *);
static int obj_fixup_free(struct Segment *);
static void obj_ledata_new(struct Segment *);
static void obj_ledata_commit(void);
static void obj_write_fixup (struct ObjData *, int, int, long, long, long);
static long obj_segment (char *, int, int *);
static void obj_write_file(void);
static unsigned char *obj_write_data(unsigned char *, unsigned char *, int);
static unsigned char *obj_write_byte(unsigned char *, int);
static unsigned char *obj_write_word(unsigned char *, int);
static unsigned char *obj_write_dword(unsigned char *, long);
static unsigned char *obj_write_rword(unsigned char *, int);
static unsigned char *obj_write_name(unsigned char *, char *);
static unsigned char *obj_write_index(unsigned char *, int);
static unsigned char *obj_write_value(unsigned char *, unsigned long);
static void obj_record(int, unsigned char *, unsigned char *);
static int obj_directive (char *, char *, int);
static void obj_init (FILE *fp, efunc errfunc, ldfunc ldef, evalfunc eval) {
ofp = fp;
error = errfunc;
evaluate = eval;
deflabel = ldef;
first_seg = seg_alloc();
any_segs = FALSE;
fpubhead = NULL;
fpubtail = &fpubhead;
exthead = NULL;
exttail = &exthead;
imphead = NULL;
imptail = &imphead;
exphead = NULL;
exptail = &exphead;
dws = NULL;
externals = 0;
ebhead = NULL;
ebtail = &ebhead;
seghead = obj_seg_needs_update = NULL;
segtail = &seghead;
grphead = obj_grp_needs_update = NULL;
grptail = &grphead;
datahead = datacurr = NULL;
datatail = &datahead;
obj_entry_seg = NO_SEG;
obj_uppercase = FALSE;
}
static void obj_cleanup (void) {
obj_write_file();
fclose (ofp);
while (seghead) {
struct Segment *segtmp = seghead;
seghead = seghead->next;
while (segtmp->pubhead) {
struct Public *pubtmp = segtmp->pubhead;
segtmp->pubhead = pubtmp->next;
nasm_free (pubtmp->name);
nasm_free (pubtmp);
}
nasm_free (segtmp);
}
while (fpubhead) {
struct Public *pubtmp = fpubhead;
fpubhead = fpubhead->next;
nasm_free (pubtmp->name);
nasm_free (pubtmp);
}
while (exthead) {
struct External *exttmp = exthead;
exthead = exthead->next;
nasm_free (exttmp);
}
while (imphead) {
struct ImpDef *imptmp = imphead;
imphead = imphead->next;
nasm_free (imptmp->extname);
nasm_free (imptmp->libname);
nasm_free (imptmp->impname); /* nasm_free won't mind if it's NULL */
nasm_free (imptmp);
}
while (exphead) {
struct ExpDef *exptmp = exphead;
exphead = exphead->next;
nasm_free (exptmp->extname);
nasm_free (exptmp->intname);
nasm_free (exptmp);
}
while (ebhead) {
struct ExtBack *ebtmp = ebhead;
ebhead = ebhead->next;
nasm_free (ebtmp);
}
while (grphead) {
struct Group *grptmp = grphead;
grphead = grphead->next;
nasm_free (grptmp);
}
while (datahead) {
struct ObjData *datatmp = datahead;
datahead = datahead->next;
nasm_free (datatmp);
}
}
static void obj_ext_set_defwrt (struct External *ext, char *id) {
struct Segment *seg;
struct Group *grp;
for (seg = seghead; seg; seg = seg->next)
if (!strcmp(seg->name, id)) {
ext->defwrt_type = DEFWRT_SEGMENT;
ext->defwrt_ptr.seg = seg;
nasm_free (id);
return;
}
for (grp = grphead; grp; grp = grp->next)
if (!strcmp(grp->name, id)) {
ext->defwrt_type = DEFWRT_GROUP;
ext->defwrt_ptr.grp = grp;
nasm_free (id);
return;
}
ext->defwrt_type = DEFWRT_STRING;
ext->defwrt_ptr.string = id;
ext->next_dws = dws;
dws = ext;
}
static void obj_deflabel (char *name, long segment,
long offset, int is_global, char *special) {
/*
* We have three cases:
*
* (i) `segment' is a segment-base. If so, set the name field
* for the segment or group structure it refers to, and then
* return.
*
* (ii) `segment' is one of our segments, or a SEG_ABS segment.
* Save the label position for later output of a PUBDEF record.
* (Or a MODPUB, if we work out how.)
*
* (iii) `segment' is not one of our segments. Save the label
* position for later output of an EXTDEF, and also store a
* back-reference so that we can map later references to this
* segment number to the external index.
*/
struct External *ext;
struct ExtBack *eb;
struct Segment *seg;
int i;
int used_special = FALSE; /* have we used the special text? */
/*
* If it's a special-retry from pass two, discard it.
*/
if (is_global == 3)
return;
/*
* First check for the double-period, signifying something
* unusual.
*/
if (name[0] == '.' && name[1] == '.' && name[2] != '@') {
if (!strcmp(name, "..start")) {
obj_entry_seg = segment;
obj_entry_ofs = offset;
return;
}
error (ERR_NONFATAL, "unrecognised special symbol `%s'", name);
}
/*
* Case (i):
*/
if (obj_seg_needs_update) {
obj_seg_needs_update->name = name;
return;
} else if (obj_grp_needs_update) {
obj_grp_needs_update->name = name;
return;
}
if (segment < SEG_ABS && segment != NO_SEG && segment % 2)
return;
if (segment >= SEG_ABS || segment == NO_SEG) {
/*
* SEG_ABS subcase of (ii).
*/
if (is_global) {
struct Public *pub;
pub = *fpubtail = nasm_malloc(sizeof(*pub));
fpubtail = &pub->next;
pub->next = NULL;
pub->name = nasm_strdup(name);
pub->offset = offset;
pub->segment = (segment == NO_SEG ? 0 : segment & ~SEG_ABS);
}
if (special)
error(ERR_NONFATAL, "OBJ supports no special symbol features"
" for this symbol type");
return;
}
/*
* If `any_segs' is still FALSE, we might need to define a
* default segment, if they're trying to declare a label in
* `first_seg'.
*/
if (!any_segs && segment == first_seg) {
int tempint; /* ignored */
if (segment != obj_segment("__NASMDEFSEG", 2, &tempint))
error (ERR_PANIC, "strange segment conditions in OBJ driver");
}
for (seg = seghead; seg; seg = seg->next)
if (seg->index == segment) {
/*
* Case (ii). Maybe MODPUB someday?
*/
if (is_global) {
struct Public *pub;
pub = *seg->pubtail = nasm_malloc(sizeof(*pub));
seg->pubtail = &pub->next;
pub->next = NULL;
pub->name = nasm_strdup(name);
pub->offset = offset;
}
if (special)
error(ERR_NONFATAL, "OBJ supports no special symbol features"
" for this symbol type");
return;
}
/*
* Case (iii).
*/
ext = *exttail = nasm_malloc(sizeof(*ext));
ext->next = NULL;
exttail = &ext->next;
ext->name = name;
ext->defwrt_type = DEFWRT_NONE;
if (is_global == 2) {
ext->commonsize = offset;
ext->commonelem = 1; /* default FAR */
} else
ext->commonsize = 0;
/*
* Now process the special text, if any, to find default-WRT
* specifications and common-variable element-size and near/far
* specifications.
*/
while (special && *special) {
used_special = TRUE;
/*
* We might have a default-WRT specification.
*/
if (!nasm_strnicmp(special, "wrt", 3)) {
char *p;
int len;
special += 3;
special += strspn(special, " \t");
p = nasm_strndup(special, len = strcspn(special, ":"));
obj_ext_set_defwrt (ext, p);
special += len;
if (*special && *special != ':')
error(ERR_NONFATAL, "`:' expected in special symbol"
" text for `%s'", ext->name);
else if (*special == ':')
special++;
}
/*
* The NEAR or FAR keywords specify nearness or
* farness. FAR gives default element size 1.
*/
if (!nasm_strnicmp(special, "far", 3)) {
if (ext->commonsize)
ext->commonelem = 1;
else
error(ERR_NONFATAL, "`%s': `far' keyword may only be applied"
" to common variables\n", ext->name);
special += 3;
special += strspn(special, " \t");
} else if (!nasm_strnicmp(special, "near", 4)) {
if (ext->commonsize)
ext->commonelem = 0;
else
error(ERR_NONFATAL, "`%s': `far' keyword may only be applied"
" to common variables\n", ext->name);
special += 4;
special += strspn(special, " \t");
}
/*
* If it's a common, and anything else remains on the line
* before a further colon, evaluate it as an expression and
* use that as the element size. Forward references aren't
* allowed.
*/
if (*special == ':')
special++;
else if (*special) {
if (ext->commonsize) {
expr *e;
struct tokenval tokval;
stdscan_reset();
stdscan_bufptr = special;
tokval.t_type = TOKEN_INVALID;
e = evaluate(stdscan, NULL, &tokval, NULL, 1, error, NULL);
if (e) {
if (!is_simple(e))
error (ERR_NONFATAL, "cannot use relocatable"
" expression as common-variable element size");
else
ext->commonelem = reloc_value(e);
}
special = stdscan_bufptr;
} else {
error (ERR_NONFATAL, "`%s': element-size specifications only"
" apply to common variables", ext->name);
while (*special && *special != ':')
special++;
if (*special == ':')
special++;
}
}
}
i = segment/2;
eb = ebhead;
if (!eb) {
eb = *ebtail = nasm_malloc(sizeof(*eb));
eb->next = NULL;
ebtail = &eb->next;
}
while (i > EXT_BLKSIZ) {
if (eb && eb->next)
eb = eb->next;
else {
eb = *ebtail = nasm_malloc(sizeof(*eb));
eb->next = NULL;
ebtail = &eb->next;
}
i -= EXT_BLKSIZ;
}
eb->exts[i] = ext;
ext->index = ++externals;
if (special && !used_special)
error(ERR_NONFATAL, "OBJ supports no special symbol features"
" for this symbol type");
}
static void obj_out (long segto, void *data, unsigned long type,
long segment, long wrt) {
long size, realtype;
unsigned char *ucdata;
long ldata;
struct Segment *seg;
/*
* handle absolute-assembly (structure definitions)
*/
if (segto == NO_SEG) {
if ((type & OUT_TYPMASK) != OUT_RESERVE)
error (ERR_NONFATAL, "attempt to assemble code in [ABSOLUTE]"
" space");
return;
}
/*
* If `any_segs' is still FALSE, we must define a default
* segment.
*/
if (!any_segs) {
int tempint; /* ignored */
if (segto != obj_segment("__NASMDEFSEG", 2, &tempint))
error (ERR_PANIC, "strange segment conditions in OBJ driver");
}
/*
* Find the segment we are targetting.
*/
for (seg = seghead; seg; seg = seg->next)
if (seg->index == segto)
break;
if (!seg)
error (ERR_PANIC, "code directed to nonexistent segment?");
size = type & OUT_SIZMASK;
realtype = type & OUT_TYPMASK;
if (realtype == OUT_RAWDATA) {
ucdata = data;
while (size > 0) {
long len = obj_ledata_space(seg);
if (len == 0) {
obj_ledata_new(seg);
len = obj_ledata_space(seg);
}
if (len > size)
len = size;
datacurr->lptr = obj_write_data (datacurr->lptr, ucdata, len);
datacurr->nonempty = TRUE;
ucdata += len;
size -= len;
seg->currentpos += len;
}
} else if (realtype == OUT_ADDRESS || realtype == OUT_REL2ADR ||
realtype == OUT_REL4ADR) {
int rsize;
if (segment == NO_SEG && realtype != OUT_ADDRESS)
error(ERR_NONFATAL, "relative call to absolute address not"
" supported by OBJ format");
if (segment >= SEG_ABS)
error(ERR_NONFATAL, "far-absolute relocations not supported"
" by OBJ format");
ldata = *(long *)data;
if (realtype == OUT_REL2ADR) {
ldata += (size-2);
size = 2;
}
if (realtype == OUT_REL4ADR) {
ldata += (size-4);
size = 4;
}
if (obj_ledata_space(seg) < 4 || !obj_fixup_free(seg))
obj_ledata_new(seg);
if (size == 2)
datacurr->lptr = obj_write_word (datacurr->lptr, ldata);
else
datacurr->lptr = obj_write_dword (datacurr->lptr, ldata);
datacurr->nonempty = TRUE;
rsize = size;
if (segment < SEG_ABS && segment % 2 && size == 4) {
/*
* This is a 4-byte segment-base relocation such as
* `MOV EAX,SEG foo'. OBJ format can't actually handle
* these, but if the constant term has the 16 low bits
* zero, we can just apply a 2-byte segment-base
* relocation to the low word instead.
*/
rsize = 2;
if (ldata & 0xFFFF)
error(ERR_NONFATAL, "OBJ format cannot handle complex"
" dword-size segment base references");
}
if (segment != NO_SEG)
obj_write_fixup (datacurr, rsize,
(realtype == OUT_REL2ADR ||
realtype == OUT_REL4ADR ? 0 : 0x4000),
segment, wrt,
(seg->currentpos - datacurr->startpos));
seg->currentpos += size;
} else if (realtype == OUT_RESERVE) {
obj_ledata_commit();
seg->currentpos += size;
}
}
static long obj_ledata_space(struct Segment *segto) {
if (datacurr && datacurr->seg == segto)
return datacurr->ledata + LEDATA_MAX - datacurr->lptr;
else
return 0;
}
static int obj_fixup_free(struct Segment *segto) {
if (datacurr && datacurr->seg == segto)
return (datacurr->fixupp + RECORD_MAX - datacurr->fptr) > 8;
else
return 0;
}
static void obj_ledata_new(struct Segment *segto) {
datacurr = *datatail = nasm_malloc(sizeof(*datacurr));
datacurr->next = NULL;
datatail = &datacurr->next;
datacurr->nonempty = FALSE;
datacurr->lptr = datacurr->ledata;
datacurr->fptr = datacurr->fixupp;
datacurr->seg = segto;
if (segto->use32)
datacurr->letype = LEDATA+1;
else
datacurr->letype = LEDATA;
datacurr->startpos = segto->currentpos;
datacurr->ftype = FIXUPP;
datacurr->lptr = obj_write_index (datacurr->lptr, segto->obj_index);
if (datacurr->letype == LEDATA)
datacurr->lptr = obj_write_word (datacurr->lptr, segto->currentpos);
else
datacurr->lptr = obj_write_dword (datacurr->lptr, segto->currentpos);
}
static void obj_ledata_commit(void) {
datacurr = NULL;
}
static void obj_write_fixup (struct ObjData *data, int bytes,
int segrel, long seg, long wrt,
long offset) {
int locat, method;
int base;
long tidx, fidx;
struct Segment *s = NULL;
struct Group *g = NULL;
struct External *e = NULL;
if (bytes == 1) {
error(ERR_NONFATAL, "`obj' output driver does not support"
" one-byte relocations");
return;
}
locat = 0x8000 | segrel | offset;
if (seg % 2) {
base = TRUE;
locat |= 0x800;
seg--;
if (bytes != 2)
error(ERR_PANIC, "OBJ: 4-byte segment base fixup got"
" through sanity check");
} else {
base = FALSE;
if (bytes == 2)
locat |= 0x400;
else {
locat |= 0x2400;
data->ftype = FIXUPP+1; /* need new-style FIXUPP record */
}
}
data->fptr = obj_write_rword (data->fptr, locat);
tidx = fidx = -1, method = 0; /* placate optimisers */
/*
* See if we can find the segment ID in our segment list. If
* so, we have a T4 (LSEG) target.
*/
for (s = seghead; s; s = s->next)
if (s->index == seg)
break;
if (s)
method = 4, tidx = s->obj_index;
else {
for (g = grphead; g; g = g->next)
if (g->index == seg)
break;
if (g)
method = 5, tidx = g->obj_index;
else {
long i = seg/2;
struct ExtBack *eb = ebhead;
while (i > EXT_BLKSIZ) {
if (eb)
eb = eb->next;
else
break;
i -= EXT_BLKSIZ;
}
if (eb)
method = 6, e = eb->exts[i], tidx = e->index;
else
error(ERR_PANIC,
"unrecognised segment value in obj_write_fixup");
}
}
/*
* If no WRT given, assume the natural default, which is method
* F5 unless:
*
* - we are doing an OFFSET fixup for a grouped segment, in
* which case we require F1 (group).
*
* - we are doing an OFFSET fixup for an external with a
* default WRT, in which case we must honour the default WRT.
*/
if (wrt == NO_SEG) {
if (!base && s && s->grp)
method |= 0x10, fidx = s->grp->obj_index;
else if (!base && e && e->defwrt_type != DEFWRT_NONE) {
if (e->defwrt_type == DEFWRT_SEGMENT)
method |= 0x00, fidx = e->defwrt_ptr.seg->obj_index;
else if (e->defwrt_type == DEFWRT_GROUP)
method |= 0x10, fidx = e->defwrt_ptr.grp->obj_index;
else {
error(ERR_NONFATAL, "default WRT specification for"
" external `%s' unresolved", e->name);
method |= 0x50, fidx = -1; /* got to do _something_ */
}
} else
method |= 0x50, fidx = -1;
} else {
/*
* See if we can find the WRT-segment ID in our segment
* list. If so, we have a F0 (LSEG) frame.
*/
for (s = seghead; s; s = s->next)
if (s->index == wrt-1)
break;
if (s)
method |= 0x00, fidx = s->obj_index;
else {
for (g = grphead; g; g = g->next)
if (g->index == wrt-1)
break;
if (g)
method |= 0x10, fidx = g->obj_index;
else {
long i = wrt/2;
struct ExtBack *eb = ebhead;
while (i > EXT_BLKSIZ) {
if (eb)
eb = eb->next;
else
break;
i -= EXT_BLKSIZ;
}
if (eb)
method |= 0x20, fidx = eb->exts[i]->index;
else
error(ERR_PANIC,
"unrecognised WRT value in obj_write_fixup");
}
}
}
data->fptr = obj_write_byte (data->fptr, method);
if (fidx != -1)
data->fptr = obj_write_index (data->fptr, fidx);
data->fptr = obj_write_index (data->fptr, tidx);
}
static long obj_segment (char *name, int pass, int *bits) {
/*
* We call the label manager here to define a name for the new
* segment, and when our _own_ label-definition stub gets
* called in return, it should register the new segment name
* using the pointer it gets passed. That way we save memory,
* by sponging off the label manager.
*/
if (!name) {
*bits = 16;
return first_seg;
} else {
struct Segment *seg;
struct Group *grp;
struct External **extp;
int obj_idx, i, attrs, rn_error;
char *p;
/*
* Look for segment attributes.
*/
attrs = 0;
while (*name == '.')
name++; /* hack, but a documented one */
p = name;
while (*p && !isspace(*p))
p++;
if (*p) {
*p++ = '\0';
while (*p && isspace(*p))
*p++ = '\0';
}
while (*p) {
while (*p && !isspace(*p))
p++;
if (*p) {
*p++ = '\0';
while (*p && isspace(*p))
*p++ = '\0';
}
attrs++;
}
obj_idx = 1;
for (seg = seghead; seg; seg = seg->next) {
obj_idx++;
if (!strcmp(seg->name, name)) {
if (attrs > 0 && pass == 1)
error(ERR_WARNING, "segment attributes specified on"
" redeclaration of segment: ignoring");
if (seg->use32)
*bits = 32;
else
*bits = 16;
return seg->index;
}
}
*segtail = seg = nasm_malloc(sizeof(*seg));
seg->next = NULL;
segtail = &seg->next;
seg->index = (any_segs ? seg_alloc() : first_seg);
seg->obj_index = obj_idx;
seg->grp = NULL;
any_segs = TRUE;
seg->name = NULL;
seg->currentpos = 0;
seg->align = 1; /* default */
seg->use32 = FALSE; /* default */
seg->combine = CMB_PUBLIC; /* default */
seg->segclass = seg->overlay = NULL;
seg->pubhead = NULL;
seg->pubtail = &seg->pubhead;
/*
* Process the segment attributes.
*/
p = name;
while (attrs--) {
p += strlen(p);
while (!*p) p++;
/*
* `p' contains a segment attribute.
*/
if (!nasm_stricmp(p, "private"))
seg->combine = CMB_PRIVATE;
else if (!nasm_stricmp(p, "public"))
seg->combine = CMB_PUBLIC;
else if (!nasm_stricmp(p, "common"))
seg->combine = CMB_COMMON;
else if (!nasm_stricmp(p, "stack"))
seg->combine = CMB_STACK;
else if (!nasm_stricmp(p, "use16"))
seg->use32 = FALSE;
else if (!nasm_stricmp(p, "use32"))
seg->use32 = TRUE;
else if (!nasm_stricmp(p, "flat")) {
/*
* This segment is an OS/2 FLAT segment. That means
* that its default group is group FLAT, even if
* the group FLAT does not explicitly _contain_ the
* segment.
*
* When we see this, we must create the group
* `FLAT', containing no segments, if it does not
* already exist; then we must set the default
* group of this segment to be the FLAT group.
*/
struct Group *grp;
for (grp = grphead; grp; grp = grp->next)
if (!strcmp(grp->name, "FLAT"))
break;
if (!grp) {
obj_directive ("group", "FLAT", 1);
for (grp = grphead; grp; grp = grp->next)
if (!strcmp(grp->name, "FLAT"))
break;
if (!grp)
error (ERR_PANIC, "failure to define FLAT?!");
}
seg->grp = grp;
} else if (!nasm_strnicmp(p, "class=", 6))
seg->segclass = nasm_strdup(p+6);
else if (!nasm_strnicmp(p, "overlay=", 8))
seg->overlay = nasm_strdup(p+8);
else if (!nasm_strnicmp(p, "align=", 6)) {
seg->align = readnum(p+6, &rn_error);
if (rn_error) {
seg->align = 1;
error (ERR_NONFATAL, "segment alignment should be"
" numeric");
}
switch ((int) seg->align) {
case 1: /* BYTE */
case 2: /* WORD */
case 4: /* DWORD */
case 16: /* PARA */
case 256: /* PAGE */
case 4096: /* PharLap extension */
break;
case 8:
error(ERR_WARNING, "OBJ format does not support alignment"
" of 8: rounding up to 16");
seg->align = 16;
break;
case 32:
case 64:
case 128:
error(ERR_WARNING, "OBJ format does not support alignment"
" of %d: rounding up to 256", seg->align);
seg->align = 256;
break;
case 512:
case 1024:
case 2048:
error(ERR_WARNING, "OBJ format does not support alignment"
" of %d: rounding up to 4096", seg->align);
seg->align = 4096;
break;
default:
error(ERR_NONFATAL, "invalid alignment value %d",
seg->align);
seg->align = 1;
break;
}
} else if (!nasm_strnicmp(p, "absolute=", 9)) {
seg->align = SEG_ABS + readnum(p+9, &rn_error);
if (rn_error)
error (ERR_NONFATAL, "argument to `absolute' segment"
" attribute should be numeric");
}
}
obj_seg_needs_update = seg;
if (seg->align >= SEG_ABS)
deflabel (name, NO_SEG, seg->align - SEG_ABS,
NULL, FALSE, FALSE, &of_obj, error);
else
deflabel (name, seg->index+1, 0L,
NULL, FALSE, FALSE, &of_obj, error);
obj_seg_needs_update = NULL;
/*
* See if this segment is defined in any groups.
*/
for (grp = grphead; grp; grp = grp->next) {
for (i = grp->nindices; i < grp->nentries; i++) {
if (!strcmp(grp->segs[i].name, seg->name)) {
nasm_free (grp->segs[i].name);
grp->segs[i] = grp->segs[grp->nindices];
grp->segs[grp->nindices++].index = seg->obj_index;
if (seg->grp)
error(ERR_WARNING, "segment `%s' is already part of"
" a group: first one takes precedence",
seg->name);
else
seg->grp = grp;
}
}
}
/*
* Walk through the list of externals with unresolved
* default-WRT clauses, and resolve any that point at this
* segment.
*/
extp = &dws;
while (*extp) {
if ((*extp)->defwrt_type == DEFWRT_STRING &&
!strcmp((*extp)->defwrt_ptr.string, seg->name)) {
(*extp)->defwrt_type = DEFWRT_SEGMENT;
(*extp)->defwrt_ptr.seg = seg;
*extp = (*extp)->next_dws;
} else
extp = &(*extp)->next_dws;
}
if (seg->use32)
*bits = 32;
else
*bits = 16;
return seg->index;
}
}
static int obj_directive (char *directive, char *value, int pass) {
if (!strcmp(directive, "group")) {
char *p, *q, *v;
if (pass == 1) {
struct Group *grp;
struct Segment *seg;
struct External **extp;
int obj_idx;
q = value;
while (*q == '.')
q++; /* hack, but a documented one */
v = q;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
/*
* Here we used to sanity-check the group directive to
* ensure nobody tried to declare a group containing no
* segments. However, OS/2 does this as standard
* practice, so the sanity check has been removed.
*
* if (!*q) {
* error(ERR_NONFATAL,"GROUP directive contains no segments");
* return 1;
* }
*/
obj_idx = 1;
for (grp = grphead; grp; grp = grp->next) {
obj_idx++;
if (!strcmp(grp->name, v)) {
error(ERR_NONFATAL, "group `%s' defined twice", v);
return 1;
}
}
*grptail = grp = nasm_malloc(sizeof(*grp));
grp->next = NULL;
grptail = &grp->next;
grp->index = seg_alloc();
grp->obj_index = obj_idx;
grp->nindices = grp->nentries = 0;
grp->name = NULL;
obj_grp_needs_update = grp;
deflabel (v, grp->index+1, 0L,
NULL, FALSE, FALSE, &of_obj, error);
obj_grp_needs_update = NULL;
while (*q) {
p = q;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
/*
* Now p contains a segment name. Find it.
*/
for (seg = seghead; seg; seg = seg->next)
if (!strcmp(seg->name, p))
break;
if (seg) {
/*
* We have a segment index. Shift a name entry
* to the end of the array to make room.
*/
grp->segs[grp->nentries++] = grp->segs[grp->nindices];
grp->segs[grp->nindices++].index = seg->obj_index;
if (seg->grp)
error(ERR_WARNING, "segment `%s' is already part of"
" a group: first one takes precedence",
seg->name);
else
seg->grp = grp;
} else {
/*
* We have an as-yet undefined segment.
* Remember its name, for later.
*/
grp->segs[grp->nentries++].name = nasm_strdup(p);
}
}
/*
* Walk through the list of externals with unresolved
* default-WRT clauses, and resolve any that point at
* this group.
*/
extp = &dws;
while (*extp) {
if ((*extp)->defwrt_type == DEFWRT_STRING &&
!strcmp((*extp)->defwrt_ptr.string, grp->name)) {
(*extp)->defwrt_type = DEFWRT_GROUP;
(*extp)->defwrt_ptr.grp = grp;
*extp = (*extp)->next_dws;
} else
extp = &(*extp)->next_dws;
}
}
return 1;
}
if (!strcmp(directive, "uppercase")) {
obj_uppercase = TRUE;
return 1;
}
if (!strcmp(directive, "import")) {
char *q, *extname, *libname, *impname;
if (pass == 2)
return 1; /* ignore in pass two */
extname = q = value;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
libname = q;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
impname = q;
if (!*extname || !*libname)
error(ERR_NONFATAL, "`import' directive requires symbol name"
" and library name");
else {
struct ImpDef *imp;
int err = FALSE;
imp = *imptail = nasm_malloc(sizeof(struct ImpDef));
imptail = &imp->next;
imp->next = NULL;
imp->extname = nasm_strdup(extname);
imp->libname = nasm_strdup(libname);
imp->impindex = readnum(impname, &err);
if (!*impname || err)
imp->impname = nasm_strdup(impname);
else
imp->impname = NULL;
}
return 1;
}
if (!strcmp(directive, "export")) {
char *q, *extname, *intname, *v;
struct ExpDef *export;
int flags = 0;
unsigned int ordinal = 0;
if (pass == 2)
return 1; /* ignore in pass two */
intname = q = value;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
extname = q;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
if (!*intname) {
error(ERR_NONFATAL, "`export' directive requires export name");
return 1;
}
if (!*extname) {
extname = intname;
intname = "";
}
while (*q) {
v = q;
while (*q && !isspace(*q))
q++;
if (isspace(*q)) {
*q++ = '\0';
while (*q && isspace(*q))
q++;
}
if (!nasm_stricmp(v, "resident"))
flags |= EXPDEF_FLAG_RESIDENT;
else if (!nasm_stricmp(v, "nodata"))
flags |= EXPDEF_FLAG_NODATA;
else if (!nasm_strnicmp(v, "parm=", 5)) {
int err = FALSE;
flags |= EXPDEF_MASK_PARMCNT & readnum(v+5, &err);
if (err) {
error(ERR_NONFATAL,
"value `%s' for `parm' is non-numeric", v+5);
return 1;
}
} else {
int err = FALSE;
ordinal = readnum(v, &err);
if (err) {
error(ERR_NONFATAL, "unrecognised export qualifier `%s'",
v);
return 1;
}
flags |= EXPDEF_FLAG_ORDINAL;
}
}
export = *exptail = nasm_malloc(sizeof(struct ExpDef));
exptail = &export->next;
export->next = NULL;
export->extname = nasm_strdup(extname);
export->intname = nasm_strdup(intname);
export->ordinal = ordinal;
export->flags = flags;
return 1;
}
return 0;
}
static long obj_segbase (long segment) {
struct Segment *seg;
/*
* Find the segment in our list.
*/
for (seg = seghead; seg; seg = seg->next)
if (seg->index == segment-1)
break;
if (!seg) {
/*
* Might be an external with a default WRT.
*/
long i = segment/2;
struct ExtBack *eb = ebhead;
struct External *e;
while (i > EXT_BLKSIZ) {
if (eb)
eb = eb->next;
else
break;
i -= EXT_BLKSIZ;
}
if (eb) {
e = eb->exts[i];
if (e->defwrt_type == DEFWRT_NONE)
return segment; /* fine */
else if (e->defwrt_type == DEFWRT_SEGMENT)
return e->defwrt_ptr.seg->index+1;
else if (e->defwrt_type == DEFWRT_GROUP)
return e->defwrt_ptr.grp->index+1;
else if (e->defwrt_type == DEFWRT_STRING)
return NO_SEG; /* can't tell what it is */
}
return segment; /* not one of ours - leave it alone */
}
if (seg->align >= SEG_ABS)
return seg->align; /* absolute segment */
if (seg->grp)
return seg->grp->index+1; /* grouped segment */
return segment; /* no special treatment */
}
static void obj_filename (char *inname, char *outname, efunc error) {
strcpy(obj_infile, inname);
standard_extension (inname, outname, ".obj", error);
}
static void obj_write_file (void) {
struct Segment *seg;
struct Group *grp;
struct Public *pub;
struct External *ext;
struct ObjData *data;
struct ImpDef *imp;
struct ExpDef *export;
static char boast[] = "The Netwide Assembler " NASM_VER;
int lname_idx, rectype;
/*
* Write the THEADR module header.
*/
recptr = record;
recptr = obj_write_name (recptr, obj_infile);
obj_record (THEADR, record, recptr);
/*
* Write the NASM boast comment.
*/
recptr = record;
recptr = obj_write_rword (recptr, 0); /* comment type zero */
recptr = obj_write_name (recptr, boast);
obj_record (COMENT, record, recptr);
/*
* Write the IMPDEF records, if any.
*/
for (imp = imphead; imp; imp = imp->next) {
recptr = record;
recptr = obj_write_rword (recptr, 0xA0); /* comment class A0 */
recptr = obj_write_byte (recptr, 1); /* subfunction 1: IMPDEF */
if (imp->impname)
recptr = obj_write_byte (recptr, 0); /* import by name */
else
recptr = obj_write_byte (recptr, 1); /* import by ordinal */
recptr = obj_write_name (recptr, imp->extname);
recptr = obj_write_name (recptr, imp->libname);
if (imp->impname)
recptr = obj_write_name (recptr, imp->impname);
else
recptr = obj_write_word (recptr, imp->impindex);
obj_record (COMENT, record, recptr);
}
/*
* Write the EXPDEF records, if any.
*/
for (export = exphead; export; export = export->next) {
recptr = record;
recptr = obj_write_rword (recptr, 0xA0); /* comment class A0 */
recptr = obj_write_byte (recptr, 2); /* subfunction 1: EXPDEF */
recptr = obj_write_byte (recptr, export->flags);
recptr = obj_write_name (recptr, export->extname);
recptr = obj_write_name (recptr, export->intname);
if (export->flags & EXPDEF_FLAG_ORDINAL)
recptr = obj_write_word (recptr, export->ordinal);
obj_record (COMENT, record, recptr);
}
/*
* Write the first LNAMES record, containing LNAME one, which
* is null. Also initialise the LNAME counter.
*/
recptr = record;
recptr = obj_write_name (recptr, "");
obj_record (LNAMES, record, recptr);
lname_idx = 2;
/*
* Write the SEGDEF records. Each has an associated LNAMES
* record.
*/
for (seg = seghead; seg; seg = seg->next) {
int new_segdef; /* do we use the newer record type? */
int acbp;
int sn, cn, on; /* seg, class, overlay LNAME idx */
if (seg->use32 || seg->currentpos >= 0x10000L)
new_segdef = TRUE;
else
new_segdef = FALSE;
recptr = record;
recptr = obj_write_name (recptr, seg->name);
sn = lname_idx++;
if (seg->segclass) {
recptr = obj_write_name (recptr, seg->segclass);
cn = lname_idx++;
} else
cn = 1;
if (seg->overlay) {
recptr = obj_write_name (recptr, seg->overlay);
on = lname_idx++;
} else
on = 1;
obj_record (LNAMES, record, recptr);
acbp = (seg->combine << 2); /* C field */
if (seg->currentpos >= 0x10000L && !new_segdef)
acbp |= 0x02; /* B bit */
if (seg->use32)
acbp |= 0x01; /* P bit is Use32 flag */
/* A field */
if (seg->align >= SEG_ABS)
acbp |= 0x00;
else if (seg->align >= 4096) {
if (seg->align > 4096)
error(ERR_NONFATAL, "segment `%s' requires more alignment"
" than OBJ format supports", seg->name);
acbp |= 0xC0; /* PharLap extension */
} else if (seg->align >= 256) {
acbp |= 0x80;
} else if (seg->align >= 16) {
acbp |= 0x60;
} else if (seg->align >= 4) {
acbp |= 0xA0;
} else if (seg->align >= 2) {
acbp |= 0x40;
} else
acbp |= 0x20;
recptr = record;
recptr = obj_write_byte (recptr, acbp);
if (seg->align & SEG_ABS) {
recptr = obj_write_word (recptr, seg->align - SEG_ABS);
recptr = obj_write_byte (recptr, 0);
}
if (new_segdef)
recptr = obj_write_dword (recptr, seg->currentpos);
else
recptr = obj_write_word (recptr, seg->currentpos & 0xFFFF);
recptr = obj_write_index (recptr, sn);
recptr = obj_write_index (recptr, cn);
recptr = obj_write_index (recptr, on);
if (new_segdef)
obj_record (SEGDEF+1, record, recptr);
else
obj_record (SEGDEF, record, recptr);
}
/*
* Write some LNAMES for the group names. lname_idx is left
* alone here - it will catch up when we write the GRPDEFs.
*/
recptr = record;
for (grp = grphead; grp; grp = grp->next) {
if (recptr - record + strlen(grp->name)+2 > 1024) {
obj_record (LNAMES, record, recptr);
recptr = record;
}
recptr = obj_write_name (recptr, grp->name);
}
if (recptr > record)
obj_record (LNAMES, record, recptr);
/*
* Write the GRPDEF records.
*/
for (grp = grphead; grp; grp = grp->next) {
int i;
if (grp->nindices != grp->nentries) {
for (i = grp->nindices; i < grp->nentries; i++) {
error(ERR_NONFATAL, "group `%s' contains undefined segment"
" `%s'", grp->name, grp->segs[i].name);
nasm_free (grp->segs[i].name);
grp->segs[i].name = NULL;
}
}
recptr = record;
recptr = obj_write_index (recptr, lname_idx++);
for (i = 0; i < grp->nindices; i++) {
recptr = obj_write_byte (recptr, 0xFF);
recptr = obj_write_index (recptr, grp->segs[i].index);
}
obj_record (GRPDEF, record, recptr);
}
/*
* Write the PUBDEF records: first the ones in the segments,
* then the far-absolutes.
*/
for (seg = seghead; seg; seg = seg->next) {
int any;
recptr = record;
recptr = obj_write_index (recptr, seg->grp ? seg->grp->obj_index : 0);
recptr = obj_write_index (recptr, seg->obj_index);
any = FALSE;
if (seg->use32)
rectype = PUBDEF+1;
else
rectype = PUBDEF;
for (pub = seg->pubhead; pub; pub = pub->next) {
if (recptr - record + strlen(pub->name) > 1024) {
if (any)
obj_record (rectype, record, recptr);
recptr = record;
recptr = obj_write_index (recptr, 0);
recptr = obj_write_index (recptr, seg->obj_index);
}
recptr = obj_write_name (recptr, pub->name);
if (seg->use32)
recptr = obj_write_dword (recptr, pub->offset);
else
recptr = obj_write_word (recptr, pub->offset);
recptr = obj_write_index (recptr, 0);
any = TRUE;
}
if (any)
obj_record (rectype, record, recptr);
}
for (pub = fpubhead; pub; pub = pub->next) { /* pub-crawl :-) */
recptr = record;
recptr = obj_write_index (recptr, 0); /* no group */
recptr = obj_write_index (recptr, 0); /* no segment either */
recptr = obj_write_word (recptr, pub->segment);
recptr = obj_write_name (recptr, pub->name);
recptr = obj_write_word (recptr, pub->offset);
recptr = obj_write_index (recptr, 0);
obj_record (PUBDEF, record, recptr);
}
/*
* Write the EXTDEF and COMDEF records, in order.
*/
recptr = record;
for (ext = exthead; ext; ext = ext->next) {
if (ext->commonsize == 0) {
/* dj@delorie.com: check for buffer overrun before we overrun it */
if (recptr - record + strlen(ext->name)+2 > RECORD_MAX) {
obj_record (EXTDEF, record, recptr);
recptr = record;
}
recptr = obj_write_name (recptr, ext->name);
recptr = obj_write_index (recptr, 0);
} else {
if (recptr > record)
obj_record (EXTDEF, record, recptr);
recptr = record;
if (ext->commonsize) {
recptr = obj_write_name (recptr, ext->name);
recptr = obj_write_index (recptr, 0);
if (ext->commonelem) {
recptr = obj_write_byte (recptr, 0x61);/* far communal */
recptr = obj_write_value (recptr, (ext->commonsize /
ext->commonelem));
recptr = obj_write_value (recptr, ext->commonelem);
} else {
recptr = obj_write_byte (recptr, 0x62);/* near communal */
recptr = obj_write_value (recptr, ext->commonsize);
}
obj_record (COMDEF, record, recptr);
}
recptr = record;
}
}
if (recptr > record)
obj_record (EXTDEF, record, recptr);
/*
* Write a COMENT record stating that the linker's first pass
* may stop processing at this point. Exception is if our
* MODEND record specifies a start point, in which case,
* according to some variants of the documentation, this COMENT
* should be omitted. So we'll omit it just in case.
*/
if (obj_entry_seg == NO_SEG) {
recptr = record;
recptr = obj_write_rword (recptr, 0x40A2);
recptr = obj_write_byte (recptr, 1);
obj_record (COMENT, record, recptr);
}
/*
* Write the LEDATA/FIXUPP pairs.
*/
for (data = datahead; data; data = data->next) {
if (data->nonempty) {
obj_record (data->letype, data->ledata, data->lptr);
if (data->fptr != data->fixupp)
obj_record (data->ftype, data->fixupp, data->fptr);
}
}
/*
* Write the MODEND module end marker.
*/
recptr = record;
rectype = MODEND;
if (obj_entry_seg != NO_SEG) {
recptr = obj_write_byte (recptr, 0xC1);
/*
* Find the segment in the segment list.
*/
for (seg = seghead; seg; seg = seg->next) {
if (seg->index == obj_entry_seg) {
if (seg->grp) {
recptr = obj_write_byte (recptr, 0x10);
recptr = obj_write_index (recptr, seg->grp->obj_index);
} else {
recptr = obj_write_byte (recptr, 0x50);
}
recptr = obj_write_index (recptr, seg->obj_index);
if (seg->use32) {
rectype = MODEND+1;
recptr = obj_write_dword (recptr, obj_entry_ofs);
} else
recptr = obj_write_word (recptr, obj_entry_ofs);
break;
}
}
if (!seg)
error(ERR_NONFATAL, "entry point is not in this module");
} else
recptr = obj_write_byte (recptr, 0);
obj_record (rectype, record, recptr);
}
static unsigned char *obj_write_data(unsigned char *ptr,
unsigned char *data, int len) {
while (len--)
*ptr++ = *data++;
return ptr;
}
static unsigned char *obj_write_byte(unsigned char *ptr, int data) {
*ptr++ = data;
return ptr;
}
static unsigned char *obj_write_word(unsigned char *ptr, int data) {
*ptr++ = data & 0xFF;
*ptr++ = (data >> 8) & 0xFF;
return ptr;
}
static unsigned char *obj_write_dword(unsigned char *ptr, long data) {
*ptr++ = data & 0xFF;
*ptr++ = (data >> 8) & 0xFF;
*ptr++ = (data >> 16) & 0xFF;
*ptr++ = (data >> 24) & 0xFF;
return ptr;
}
static unsigned char *obj_write_rword(unsigned char *ptr, int data) {
*ptr++ = (data >> 8) & 0xFF;
*ptr++ = data & 0xFF;
return ptr;
}
static unsigned char *obj_write_name(unsigned char *ptr, char *data) {
*ptr++ = strlen(data);
if (obj_uppercase) {
while (*data) {
*ptr++ = (unsigned char) toupper(*data);
data++;
}
} else {
while (*data)
*ptr++ = (unsigned char) *data++;
}
return ptr;
}
static unsigned char *obj_write_index(unsigned char *ptr, int data) {
if (data < 128)
*ptr++ = data;
else {
*ptr++ = 0x80 | ((data >> 8) & 0x7F);
*ptr++ = data & 0xFF;
}
return ptr;
}
static unsigned char *obj_write_value(unsigned char *ptr,
unsigned long data) {
if (data <= 128)
*ptr++ = data;
else if (data <= 0xFFFF) {
*ptr++ = 129;
*ptr++ = data & 0xFF;
*ptr++ = (data >> 8) & 0xFF;
} else if (data <= 0xFFFFFFL) {
*ptr++ = 132;
*ptr++ = data & 0xFF;
*ptr++ = (data >> 8) & 0xFF;
*ptr++ = (data >> 16) & 0xFF;
} else {
*ptr++ = 136;
*ptr++ = data & 0xFF;
*ptr++ = (data >> 8) & 0xFF;
*ptr++ = (data >> 16) & 0xFF;
*ptr++ = (data >> 24) & 0xFF;
}
return ptr;
}
static void obj_record(int type, unsigned char *start, unsigned char *end) {
unsigned long cksum, len;
cksum = type;
fputc (type, ofp);
len = end-start+1;
cksum += (len & 0xFF) + ((len>>8) & 0xFF);
fwriteshort (len, ofp);
fwrite (start, 1, end-start, ofp);
while (start < end)
cksum += *start++;
fputc ( (-(long)cksum) & 0xFF, ofp);
}
static char *obj_stdmac[] = {
"%define __SECT__ [section .text]",
"%imacro group 1+.nolist",
"[group %1]",
"%endmacro",
"%imacro uppercase 1+.nolist",
"[uppercase %1]",
"%endmacro",
"%imacro export 1+.nolist",
"[export %1]",
"%endmacro",
"%imacro import 1+.nolist",
"[import %1]",
"%endmacro",
NULL
};
struct ofmt of_obj = {
"Microsoft MS-DOS 16-bit OMF object files",
"obj",
obj_stdmac,
obj_init,
obj_out,
obj_deflabel,
obj_segment,
obj_segbase,
obj_directive,
obj_filename,
obj_cleanup
};
#endif /* OF_OBJ */
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