1 /* outieee.c output routines for the Netwide Assembler to produce
2 * IEEE-std object files
4 * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
5 * Julian Hall. All rights reserved. The software is
6 * redistributable under the licence given in the file "Licence"
7 * distributed in the NASM archive.
10 /* notes: I have tried to make this correspond to the IEEE version
11 * of the standard, specifically the primary ASCII version. It should
12 * be trivial to create the binary version given this source (which is
13 * one of MANY things that have to be done to make this correspond to
14 * the hp-microtek version of the standard).
16 * 16-bit support is assumed to use 24-bit addresses
17 * The linker can sort out segmentation-specific stuff
18 * if it keeps track of externals
19 * in terms of being relative to section bases
21 * A non-standard variable type, the 'Yn' variable, has been introduced.
22 * Basically it is a reference to extern 'n'- denoting the low limit
23 * (L-variable) of the section that extern 'n' is defined in. Like the
24 * x variable, there may be no explicit assignment to it, it is derived
25 * from the public definition corresponding to the extern name. This
26 * is required because the one thing the mufom guys forgot to do well was
27 * take into account segmented architectures.
29 * I use comment classes for various things and these are undefined by
32 * Debug info should be considered totally non-standard (local labels are
33 * standard but linenum records are not covered by the standard.
34 * Type defs have the standard format but absolute meanings for ordinal
35 * types are not covered by the standard.)
37 * David Lindauer, LADsoft
43 #include <stdarg.h> /* Note: we need the ANSI version of stdarg.h */
54 static char ieee_infile
[FILENAME_MAX
];
55 static int ieee_uppercase
;
58 static ldfunc deflabel
;
63 #define HUNKSIZE 1024 /* Size of the data hunk */
64 #define EXT_BLKSIZ 512
65 #define LDPERLINE 32 /* bytes per line in output */
70 struct LineNumber
*next
;
71 struct ieeeSection
*segment
;
76 static struct FileName
{
77 struct FileName
*next
;
86 } *arrhead
, **arrtail
;
88 static struct ieeePublic
{
89 struct ieeePublic
*next
;
92 long segment
; /* only if it's far-absolute */
94 int type
; /* for debug purposes */
95 } *fpubhead
, **fpubtail
, *last_defined
;
97 static struct ieeeExternal
{
98 struct ieeeExternal
*next
;
101 } *exthead
, **exttail
;
103 static int externals
;
105 static struct ExtBack
{
106 struct ExtBack
*next
;
107 int index
[EXT_BLKSIZ
];
110 /* NOTE: the first segment MUST be the lineno segment */
111 static struct ieeeSection
{
112 struct ieeeObjData
*data
, *datacurr
;
113 struct ieeeSection
*next
;
114 struct ieeeFixupp
*fptr
, *flptr
;
115 long index
; /* the NASM segment id */
116 long ieee_index
; /* the OBJ-file segment index */
118 long align
; /* can be SEG_ABS + absolute addr */
125 long use32
; /* is this segment 32-bit? */
126 struct ieeePublic
*pubhead
, **pubtail
, *lochead
, **loctail
;
128 } *seghead
, **segtail
, *ieee_seg_needs_update
;
131 struct ieeeObjData
*next
;
132 unsigned char data
[HUNKSIZE
];
136 struct ieeeFixupp
*next
;
154 static long ieee_entry_seg
, ieee_entry_ofs
;
157 extern struct ofmt of_ieee
;
159 static void ieee_data_new(struct ieeeSection
*);
160 static void ieee_write_fixup(long, long, struct ieeeSection
*,
161 int, unsigned long, long);
162 static void ieee_install_fixup(struct ieeeSection
*, struct ieeeFixupp
*);
163 static long ieee_segment(char *, int, int *);
164 static void ieee_write_file(int debuginfo
);
165 static void ieee_write_byte(struct ieeeSection
*, int);
166 static void ieee_write_word(struct ieeeSection
*, int);
167 static void ieee_write_dword(struct ieeeSection
*, long);
168 static void ieee_putascii(char *, ...);
169 static void ieee_putcs(int);
170 static long ieee_putld(long, long, unsigned char *);
171 static long ieee_putlr(struct ieeeFixupp
*);
172 static void ieee_unqualified_name(char *, char *);
177 static void ieee_init(FILE * fp
, efunc errfunc
, ldfunc ldef
, evalfunc eval
)
185 fpubtail
= &fpubhead
;
191 seghead
= ieee_seg_needs_update
= NULL
;
193 ieee_entry_seg
= NO_SEG
;
194 ieee_uppercase
= FALSE
;
196 of_ieee
.current_dfmt
->init(&of_ieee
, NULL
, fp
, errfunc
);
198 static int ieee_set_info(enum geninfo type
, char **val
)
209 static void ieee_cleanup(int debuginfo
)
211 ieee_write_file(debuginfo
);
212 of_ieee
.current_dfmt
->cleanup();
215 struct ieeeSection
*segtmp
= seghead
;
216 seghead
= seghead
->next
;
217 while (segtmp
->pubhead
) {
218 struct ieeePublic
*pubtmp
= segtmp
->pubhead
;
219 segtmp
->pubhead
= pubtmp
->next
;
222 while (segtmp
->fptr
) {
223 struct ieeeFixupp
*fixtmp
= segtmp
->fptr
;
224 segtmp
->fptr
= fixtmp
->next
;
227 while (segtmp
->data
) {
228 struct ieeeObjData
*dattmp
= segtmp
->data
;
229 segtmp
->data
= dattmp
->next
;
235 struct ieeePublic
*pubtmp
= fpubhead
;
236 fpubhead
= fpubhead
->next
;
240 struct ieeeExternal
*exttmp
= exthead
;
241 exthead
= exthead
->next
;
245 struct ExtBack
*ebtmp
= ebhead
;
246 ebhead
= ebhead
->next
;
252 * callback for labels
254 static void ieee_deflabel(char *name
, long segment
,
255 long offset
, int is_global
, char *special
)
258 * We have three cases:
260 * (i) `segment' is a segment-base. If so, set the name field
261 * for the segment structure it refers to, and then
264 * (ii) `segment' is one of our segments, or a SEG_ABS segment.
265 * Save the label position for later output of a PUBDEF record.
268 * (iii) `segment' is not one of our segments. Save the label
269 * position for later output of an EXTDEF.
271 struct ieeeExternal
*ext
;
273 struct ieeeSection
*seg
;
277 error(ERR_NONFATAL
, "unrecognised symbol type `%s'", special
);
280 * First check for the double-period, signifying something
283 if (name
[0] == '.' && name
[1] == '.') {
284 if (!strcmp(name
, "..start")) {
285 ieee_entry_seg
= segment
;
286 ieee_entry_ofs
= offset
;
294 if (ieee_seg_needs_update
) {
295 ieee_seg_needs_update
->name
= name
;
298 if (segment
< SEG_ABS
&& segment
!= NO_SEG
&& segment
% 2)
304 if (segment
>= SEG_ABS
) {
306 * SEG_ABS subcase of (ii).
309 struct ieeePublic
*pub
;
311 pub
= *fpubtail
= nasm_malloc(sizeof(*pub
));
312 fpubtail
= &pub
->next
;
315 pub
->offset
= offset
;
316 pub
->segment
= segment
& ~SEG_ABS
;
321 for (seg
= seghead
; seg
&& is_global
; seg
= seg
->next
)
322 if (seg
->index
== segment
) {
323 struct ieeePublic
*pub
;
325 last_defined
= pub
= *seg
->pubtail
= nasm_malloc(sizeof(*pub
));
326 seg
->pubtail
= &pub
->next
;
329 pub
->offset
= offset
;
330 pub
->index
= seg
->ieee_index
;
339 ext
= *exttail
= nasm_malloc(sizeof(*ext
));
341 exttail
= &ext
->next
;
344 ext
->commonsize
= offset
;
350 eb
= *ebtail
= nasm_malloc(sizeof(*eb
));
354 while (i
> EXT_BLKSIZ
) {
358 eb
= *ebtail
= nasm_malloc(sizeof(*eb
));
364 eb
->index
[i
] = externals
++;
372 static void ieee_out(long segto
, const void *data
, unsigned long type
,
373 long segment
, long wrt
)
375 unsigned long size
, realtype
;
376 const unsigned char *ucdata
;
378 struct ieeeSection
*seg
;
381 * handle absolute-assembly (structure definitions)
383 if (segto
== NO_SEG
) {
384 if ((type
& OUT_TYPMASK
) != OUT_RESERVE
)
385 error(ERR_NONFATAL
, "attempt to assemble code in [ABSOLUTE]"
391 * If `any_segs' is still FALSE, we must define a default
395 int tempint
; /* ignored */
396 if (segto
!= ieee_segment("__NASMDEFSEG", 2, &tempint
))
397 error(ERR_PANIC
, "strange segment conditions in IEEE driver");
401 * Find the segment we are targetting.
403 for (seg
= seghead
; seg
; seg
= seg
->next
)
404 if (seg
->index
== segto
)
407 error(ERR_PANIC
, "code directed to nonexistent segment?");
409 size
= type
& OUT_SIZMASK
;
410 realtype
= type
& OUT_TYPMASK
;
411 if (realtype
== OUT_RAWDATA
) {
414 ieee_write_byte(seg
, *ucdata
++);
415 } else if (realtype
== OUT_ADDRESS
|| realtype
== OUT_REL2ADR
||
416 realtype
== OUT_REL4ADR
) {
417 if (segment
== NO_SEG
&& realtype
!= OUT_ADDRESS
)
418 error(ERR_NONFATAL
, "relative call to absolute address not"
419 " supported by IEEE format");
420 ldata
= *(long *)data
;
421 if (realtype
== OUT_REL2ADR
)
423 if (realtype
== OUT_REL4ADR
)
425 ieee_write_fixup(segment
, wrt
, seg
, size
, realtype
, ldata
);
427 ieee_write_word(seg
, ldata
);
429 ieee_write_dword(seg
, ldata
);
430 } else if (realtype
== OUT_RESERVE
) {
432 ieee_write_byte(seg
, 0);
436 static void ieee_data_new(struct ieeeSection
*segto
)
440 segto
->data
= segto
->datacurr
=
441 nasm_malloc(sizeof(*(segto
->datacurr
)));
443 segto
->datacurr
= segto
->datacurr
->next
=
444 nasm_malloc(sizeof(*(segto
->datacurr
)));
445 segto
->datacurr
->next
= NULL
;
449 * this routine is unalduterated bloatware. I usually don't do this
450 * but I might as well see what it is like on a harmless program.
451 * If anyone wants to optimize this is a good canditate!
453 static void ieee_write_fixup(long segment
, long wrt
,
454 struct ieeeSection
*segto
, int size
,
455 unsigned long realtype
, long offset
)
457 struct ieeeSection
*target
;
460 /* Don't put a fixup for things NASM can calculate */
461 if (wrt
== NO_SEG
&& segment
== NO_SEG
)
465 /* if it is a WRT offset */
470 s
.id1
= -(wrt
- SEG_ABS
);
472 if (wrt
% 2 && realtype
!= OUT_REL2ADR
473 && realtype
!= OUT_REL4ADR
) {
476 for (target
= seghead
; target
; target
= target
->next
)
477 if (target
->index
== wrt
)
480 s
.id1
= target
->ieee_index
;
481 for (target
= seghead
; target
; target
= target
->next
)
482 if (target
->index
== segment
)
486 s
.id2
= target
->ieee_index
;
489 * Now we assume the segment field is being used
490 * to hold an extern index
492 long i
= segment
/ 2;
493 struct ExtBack
*eb
= ebhead
;
494 while (i
> EXT_BLKSIZ
) {
501 /* if we have an extern decide the type and make a record
506 s
.id2
= eb
->index
[i
];
509 "Source of WRT must be an offset");
514 "unrecognised WRT value in ieee_write_fixup");
516 error(ERR_NONFATAL
, "target of WRT must be a section ");
519 ieee_install_fixup(segto
, &s
);
522 /* Pure segment fixup ? */
523 if (segment
!= NO_SEG
) {
526 if (segment
>= SEG_ABS
) {
527 /* absolute far segment fixup */
528 s
.id1
= -(segment
- ~SEG_ABS
);
529 } else if (segment
% 2) {
530 /* fixup to named segment */
532 for (target
= seghead
; target
; target
= target
->next
)
533 if (target
->index
== segment
- 1)
536 s
.id1
= target
->ieee_index
;
539 * Now we assume the segment field is being used
540 * to hold an extern index
542 long i
= segment
/ 2;
543 struct ExtBack
*eb
= ebhead
;
544 while (i
> EXT_BLKSIZ
) {
551 /* if we have an extern decide the type and make a record
554 if (realtype
== OUT_REL2ADR
|| realtype
== OUT_REL4ADR
) {
556 "Segment of a rel not supported in ieee_write_fixup");
558 /* If we want the segment */
561 s
.id1
= eb
->index
[i
];
565 /* If we get here the seg value doesn't make sense */
567 "unrecognised segment value in ieee_write_fixup");
571 /* Assume we are offsetting directly from a section
572 * So look up the target segment
574 for (target
= seghead
; target
; target
= target
->next
)
575 if (target
->index
== segment
)
578 if (realtype
== OUT_REL2ADR
|| realtype
== OUT_REL4ADR
) {
579 /* PC rel to a known offset */
580 s
.id1
= target
->ieee_index
;
585 /* We were offsetting from a seg */
586 s
.id1
= target
->ieee_index
;
593 * Now we assume the segment field is being used
594 * to hold an extern index
596 long i
= segment
/ 2;
597 struct ExtBack
*eb
= ebhead
;
598 while (i
> EXT_BLKSIZ
) {
605 /* if we have an extern decide the type and make a record
608 if (realtype
== OUT_REL2ADR
|| realtype
== OUT_REL4ADR
) {
611 s
.id1
= eb
->index
[i
];
613 /* else we want the external offset */
616 s
.id1
= eb
->index
[i
];
620 /* If we get here the seg value doesn't make sense */
622 "unrecognised segment value in ieee_write_fixup");
625 if (size
!= 2 && s
.ftype
== FT_SEG
)
626 error(ERR_NONFATAL
, "IEEE format can only handle 2-byte"
627 " segment base references");
629 ieee_install_fixup(segto
, &s
);
632 /* should never get here */
634 static void ieee_install_fixup(struct ieeeSection
*seg
,
635 struct ieeeFixupp
*fix
)
637 struct ieeeFixupp
*f
;
638 f
= nasm_malloc(sizeof(struct ieeeFixupp
));
639 memcpy(f
, fix
, sizeof(struct ieeeFixupp
));
640 f
->offset
= seg
->currentpos
;
641 seg
->currentpos
+= fix
->size
;
644 seg
->flptr
= seg
->flptr
->next
= f
;
646 seg
->fptr
= seg
->flptr
= f
;
653 static long ieee_segment(char *name
, int pass
, int *bits
)
656 * We call the label manager here to define a name for the new
657 * segment, and when our _own_ label-definition stub gets
658 * called in return, it should register the new segment name
659 * using the pointer it gets passed. That way we save memory,
660 * by sponging off the label manager.
666 return seghead
->index
;
668 struct ieeeSection
*seg
;
669 int ieee_idx
, attrs
, rn_error
;
673 * Look for segment attributes.
677 name
++; /* hack, but a documented one */
679 while (*p
&& !isspace(*p
))
683 while (*p
&& isspace(*p
))
687 while (*p
&& !isspace(*p
))
691 while (*p
&& isspace(*p
))
699 for (seg
= seghead
; seg
; seg
= seg
->next
) {
701 if (!strcmp(seg
->name
, name
)) {
702 if (attrs
> 0 && pass
== 1)
703 error(ERR_WARNING
, "segment attributes specified on"
704 " redeclaration of segment: ignoring");
713 *segtail
= seg
= nasm_malloc(sizeof(*seg
));
715 segtail
= &seg
->next
;
716 seg
->index
= seg_alloc();
717 seg
->ieee_index
= ieee_idx
;
721 seg
->align
= 1; /* default */
722 seg
->use32
= *bits
== 32; /* default to user spec */
723 seg
->combine
= CMB_PUBLIC
; /* default */
725 seg
->pubtail
= &seg
->pubhead
;
729 seg
->loctail
= &seg
->lochead
;
732 * Process the segment attributes.
741 * `p' contains a segment attribute.
743 if (!nasm_stricmp(p
, "private"))
744 seg
->combine
= CMB_PRIVATE
;
745 else if (!nasm_stricmp(p
, "public"))
746 seg
->combine
= CMB_PUBLIC
;
747 else if (!nasm_stricmp(p
, "common"))
748 seg
->combine
= CMB_COMMON
;
749 else if (!nasm_stricmp(p
, "use16"))
751 else if (!nasm_stricmp(p
, "use32"))
753 else if (!nasm_strnicmp(p
, "align=", 6)) {
754 seg
->align
= readnum(p
+ 6, &rn_error
);
759 error(ERR_NONFATAL
, "segment alignment should be"
762 switch ((int)seg
->align
) {
774 error(ERR_NONFATAL
, "invalid alignment value %d",
779 } else if (!nasm_strnicmp(p
, "absolute=", 9)) {
780 seg
->align
= SEG_ABS
+ readnum(p
+ 9, &rn_error
);
782 error(ERR_NONFATAL
, "argument to `absolute' segment"
783 " attribute should be numeric");
787 ieee_seg_needs_update
= seg
;
788 if (seg
->align
>= SEG_ABS
)
789 deflabel(name
, NO_SEG
, seg
->align
- SEG_ABS
,
790 NULL
, FALSE
, FALSE
, &of_ieee
, error
);
792 deflabel(name
, seg
->index
+ 1, 0L,
793 NULL
, FALSE
, FALSE
, &of_ieee
, error
);
794 ieee_seg_needs_update
= NULL
;
805 * directives supported
807 static int ieee_directive(char *directive
, char *value
, int pass
)
812 if (!strcmp(directive
, "uppercase")) {
813 ieee_uppercase
= TRUE
;
820 * Return segment data
822 static long ieee_segbase(long segment
)
824 struct ieeeSection
*seg
;
827 * Find the segment in our list.
829 for (seg
= seghead
; seg
; seg
= seg
->next
)
830 if (seg
->index
== segment
- 1)
834 return segment
; /* not one of ours - leave it alone */
836 if (seg
->align
>= SEG_ABS
)
837 return seg
->align
; /* absolute segment */
839 return segment
; /* no special treatment */
845 static void ieee_filename(char *inname
, char *outname
, efunc error
)
847 strcpy(ieee_infile
, inname
);
848 standard_extension(inname
, outname
, ".o", error
);
851 static void ieee_write_file(int debuginfo
)
856 struct ieeeSection
*seg
;
857 struct ieeePublic
*pub
, *loc
;
858 struct ieeeExternal
*ext
;
859 struct ieeeObjData
*data
;
860 struct ieeeFixupp
*fix
;
862 static char boast
[] = "The Netwide Assembler " NASM_VER
;
866 * Write the module header
868 ieee_putascii("MBFNASM,%02X%s.\r\n", strlen(ieee_infile
), ieee_infile
);
871 * Write the NASM boast comment.
873 ieee_putascii("CO0,%02X%s.\r\n", strlen(boast
), boast
);
876 * write processor-specific information
878 ieee_putascii("AD8,4,L.\r\n");
884 thetime
= localtime(&reltime
);
885 ieee_putascii("DT%04d%02d%02d%02d%02d%02d.\r\n",
886 1900 + thetime
->tm_year
, thetime
->tm_mon
+ 1,
887 thetime
->tm_mday
, thetime
->tm_hour
, thetime
->tm_min
,
890 * if debugging, dump file names
892 for (fn
= fnhead
; fn
&& debuginfo
; fn
= fn
->next
) {
893 ieee_putascii("C0105,%02X%s.\r\n", strlen(fn
->name
), fn
->name
);
896 ieee_putascii("CO101,07ENDHEAD.\r\n");
898 * the standard doesn't specify when to put checksums,
899 * we'll just do it periodically.
904 * Write the section headers
907 if (!debuginfo
&& !strcmp(seg
->name
, "??LINE"))
912 switch (seg
->combine
) {
924 ieee_unqualified_name(buf
, seg
->name
);
925 if (seg
->align
>= SEG_ABS
) {
926 ieee_putascii("ST%X,A,%02X%s.\r\n", seg
->ieee_index
,
928 ieee_putascii("ASL%X,%lX.\r\n", seg
->ieee_index
,
929 (seg
->align
- SEG_ABS
) * 16);
931 ieee_putascii("ST%X,%c,%02X%s.\r\n", seg
->ieee_index
, attrib
,
933 ieee_putascii("SA%X,%lX.\r\n", seg
->ieee_index
, seg
->align
);
934 ieee_putascii("ASS%X,%X.\r\n", seg
->ieee_index
,
940 * write the start address if there is one
942 if (ieee_entry_seg
) {
943 for (seg
= seghead
; seg
; seg
= seg
->next
)
944 if (seg
->index
== ieee_entry_seg
)
947 error(ERR_PANIC
, "Start address records are incorrect");
949 ieee_putascii("ASG,R%X,%lX,+.\r\n", seg
->ieee_index
,
958 for (seg
= seghead
; seg
; seg
= seg
->next
) {
959 for (pub
= seg
->pubhead
; pub
; pub
= pub
->next
) {
961 ieee_unqualified_name(buf
, pub
->name
);
962 ieee_putascii("NI%X,%02X%s.\r\n", i
, strlen(buf
), buf
);
963 if (pub
->segment
== -1)
964 ieee_putascii("ASI%X,R%X,%lX,+.\r\n", i
, pub
->index
,
967 ieee_putascii("ASI%X,%lX,%lX,+.\r\n", i
, pub
->segment
* 16,
970 if (pub
->type
>= 0x100)
971 ieee_putascii("ATI%X,T%X.\r\n", i
, pub
->type
- 0x100);
973 ieee_putascii("ATI%X,%X.\r\n", i
, pub
->type
);
982 ieee_unqualified_name(buf
, pub
->name
);
983 ieee_putascii("NI%X,%02X%s.\r\n", i
, strlen(buf
), buf
);
984 if (pub
->segment
== -1)
985 ieee_putascii("ASI%X,R%X,%lX,+.\r\n", i
, pub
->index
,
988 ieee_putascii("ASI%X,%lX,%lX,+.\r\n", i
, pub
->segment
* 16,
991 if (pub
->type
>= 0x100)
992 ieee_putascii("ATI%X,T%X.\r\n", i
, pub
->type
- 0x100);
994 ieee_putascii("ATI%X,%X.\r\n", i
, pub
->type
);
1000 * Write the externals
1006 ieee_unqualified_name(buf
, ext
->name
);
1007 ieee_putascii("NX%X,%02X%s.\r\n", i
++, strlen(buf
), buf
);
1013 * IEEE doesn't have a standard pass break record
1014 * so use the ladsoft variant
1016 ieee_putascii("CO100,06ENDSYM.\r\n");
1022 for (arr
= arrhead
; arr
&& debuginfo
; arr
= arr
->next
) {
1023 ieee_putascii("TY%X,20,%X,%lX.\r\n", i
++, arr
->basetype
,
1030 for (seg
= seghead
; seg
&& debuginfo
; seg
= seg
->next
) {
1031 for (loc
= seg
->lochead
; loc
; loc
= loc
->next
) {
1033 ieee_unqualified_name(buf
, loc
->name
);
1034 ieee_putascii("NN%X,%02X%s.\r\n", i
, strlen(buf
), buf
);
1035 if (loc
->segment
== -1)
1036 ieee_putascii("ASN%X,R%X,%lX,+.\r\n", i
, loc
->index
,
1039 ieee_putascii("ASN%X,%lX,%lX,+.\r\n", i
, loc
->segment
* 16,
1042 if (loc
->type
>= 0x100)
1043 ieee_putascii("ATN%X,T%X.\r\n", i
, loc
->type
- 0x100);
1045 ieee_putascii("ATN%X,%X.\r\n", i
, loc
->type
);
1052 * put out section data;
1055 if (!debuginfo
&& !strcmp(seg
->name
, "??LINE"))
1058 if (seg
->currentpos
) {
1061 ieee_putascii("SB%X.\r\n", seg
->ieee_index
);
1064 size
= HUNKSIZE
- (org
% HUNKSIZE
);
1067 seg
->currentpos
? seg
->currentpos
- org
: size
;
1068 size
= fix
->offset
- org
> size
? size
: fix
->offset
- org
;
1069 org
= ieee_putld(org
, org
+ size
, data
->data
);
1070 if (org
% HUNKSIZE
== 0)
1072 if (org
== fix
->offset
) {
1073 org
+= ieee_putlr(fix
);
1077 while (org
< seg
->currentpos
&& data
) {
1079 seg
->currentpos
- org
>
1080 HUNKSIZE
? HUNKSIZE
: seg
->currentpos
- org
;
1081 org
= ieee_putld(org
, org
+ size
, data
->data
);
1092 ieee_putascii("ME.\r\n");
1095 static void ieee_write_byte(struct ieeeSection
*seg
, int data
)
1098 if (!(temp
= seg
->currentpos
++ % HUNKSIZE
))
1100 seg
->datacurr
->data
[temp
] = data
;
1103 static void ieee_write_word(struct ieeeSection
*seg
, int data
)
1105 ieee_write_byte(seg
, data
& 0xFF);
1106 ieee_write_byte(seg
, (data
>> 8) & 0xFF);
1109 static void ieee_write_dword(struct ieeeSection
*seg
, long data
)
1111 ieee_write_byte(seg
, data
& 0xFF);
1112 ieee_write_byte(seg
, (data
>> 8) & 0xFF);
1113 ieee_write_byte(seg
, (data
>> 16) & 0xFF);
1114 ieee_write_byte(seg
, (data
>> 24) & 0xFF);
1116 static void ieee_putascii(char *format
, ...)
1122 va_start(ap
, format
);
1123 vsprintf(buffer
, format
, ap
);
1125 for (i
= 0; i
< l
; i
++)
1126 if ((buffer
[i
] & 0xff) > 31)
1127 checksum
+= buffer
[i
];
1129 fprintf(ofp
, buffer
);
1133 * put out a checksum record */
1134 static void ieee_putcs(int toclear
)
1137 ieee_putascii("CS.\r\n");
1141 ieee_putascii("CS%02X.\r\n", checksum
& 127);
1146 static long ieee_putld(long start
, long end
, unsigned char *buf
)
1151 val
= start
% HUNKSIZE
;
1152 /* fill up multiple lines */
1153 while (end
- start
>= LDPERLINE
) {
1155 ieee_putascii("LD");
1156 for (i
= 0; i
< LDPERLINE
; i
++) {
1157 ieee_putascii("%02X", buf
[val
++]);
1160 ieee_putascii(".\r\n");
1162 /* if no partial lines */
1165 /* make a partial line */
1166 ieee_putascii("LD");
1167 while (start
< end
) {
1168 ieee_putascii("%02X", buf
[val
++]);
1171 ieee_putascii(".\r\n");
1174 static long ieee_putlr(struct ieeeFixupp
*p
)
1177 * To deal with the vagaries of segmentation the LADsoft linker
1178 * defines two types of segments: absolute and virtual. Note that
1179 * 'absolute' in this context is a different thing from the IEEE
1180 * definition of an absolute segment type, which is also supported. If a
1181 * sement is linked in virtual mode the low limit (L-var) is
1182 * subtracted from each R,X, and P variable which appears in an
1183 * expression, so that we can have relative offsets. Meanwhile
1184 * in the ABSOLUTE mode this subtraction is not done and
1185 * so we can use absolute offsets from 0. In the LADsoft linker
1186 * this configuration is not done in the assemblker source but in
1187 * a source the linker reads. Generally this type of thing only
1188 * becomes an issue if real mode code is used. A pure 32-bit linker could
1189 * get away without defining the virtual mode...
1192 long size
= p
->size
;
1196 sprintf(buf
, "%lX", -p
->id1
);
1198 sprintf(buf
, "L%lX,10,/", p
->id1
);
1201 sprintf(buf
, "R%lX,%lX,+", p
->id1
, p
->addend
);
1204 sprintf(buf
, "R%lX,%lX,+,P,-,%X,-", p
->id1
, p
->addend
, p
->size
);
1209 sprintf(buf
, "R%lX,%lX,+,L%lX,+,%lX,-", p
->id2
, p
->addend
,
1210 p
->id2
, -p
->id1
* 16);
1212 sprintf(buf
, "R%lX,%lX,+,L%lX,+,L%lX,-", p
->id2
, p
->addend
,
1216 sprintf(buf
, "X%lX", p
->id1
);
1219 sprintf(buf
, "X%lX,P,-,%lX,-", p
->id1
, size
);
1222 /* We needed a non-ieee hack here.
1223 * We introduce the Y variable, which is the low
1224 * limit of the native segment the extern resides in
1226 sprintf(buf
, "Y%lX,10,/", p
->id1
);
1230 sprintf(buf
, "X%lX,Y%lX,+,%lX,-", p
->id2
, p
->id2
,
1233 sprintf(buf
, "X%lX,Y%lX,+,L%lX,-", p
->id2
, p
->id2
, p
->id1
);
1236 ieee_putascii("LR(%s,%lX).\r\n", buf
, size
);
1241 /* Dump all segment data (text and fixups )*/
1243 static void ieee_unqualified_name(char *dest
, char *source
)
1245 if (ieee_uppercase
) {
1247 *dest
++ = toupper(*source
++);
1250 strcpy(dest
, source
);
1252 void dbgls_init(struct ofmt
*of
, void *id
, FILE * fp
, efunc error
)
1262 arrindex
= ARRAY_BOT
;
1265 ieee_segment("??LINE", 2, &tempint
);
1268 static void dbgls_cleanup(void)
1270 struct ieeeSection
*segtmp
;
1272 struct FileName
*fntemp
= fnhead
;
1273 fnhead
= fnhead
->next
;
1274 nasm_free(fntemp
->name
);
1277 for (segtmp
= seghead
; segtmp
; segtmp
= segtmp
->next
) {
1278 while (segtmp
->lochead
) {
1279 struct ieeePublic
*loctmp
= segtmp
->lochead
;
1280 segtmp
->lochead
= loctmp
->next
;
1281 nasm_free(loctmp
->name
);
1286 struct Array
*arrtmp
= arrhead
;
1287 arrhead
= arrhead
->next
;
1293 * because this routine is not bracketed in
1294 * the main program, this routine will be called even if there
1295 * is no request for debug info
1296 * so, we have to make sure the ??LINE segment is avaialbe
1297 * as the first segment when this debug format is selected
1299 static void dbgls_linnum(const char *lnfname
, long lineno
, long segto
)
1301 struct FileName
*fn
;
1302 struct ieeeSection
*seg
;
1304 if (segto
== NO_SEG
)
1308 * If `any_segs' is still FALSE, we must define a default
1312 int tempint
; /* ignored */
1313 if (segto
!= ieee_segment("__NASMDEFSEG", 2, &tempint
))
1314 error(ERR_PANIC
, "strange segment conditions in OBJ driver");
1318 * Find the segment we are targetting.
1320 for (seg
= seghead
; seg
; seg
= seg
->next
)
1321 if (seg
->index
== segto
)
1324 error(ERR_PANIC
, "lineno directed to nonexistent segment?");
1326 for (fn
= fnhead
; fn
; fn
= fn
->next
) {
1327 if (!nasm_stricmp(lnfname
, fn
->name
))
1332 fn
= nasm_malloc(sizeof(*fn
));
1333 fn
->name
= nasm_malloc(strlen(lnfname
) + 1);
1335 strcpy(fn
->name
, lnfname
);
1340 ieee_write_byte(seghead
, fn
->index
);
1341 ieee_write_word(seghead
, lineno
);
1342 ieee_write_fixup(segto
, NO_SEG
, seghead
, 4, OUT_ADDRESS
,
1346 static void dbgls_deflabel(char *name
, long segment
,
1347 long offset
, int is_global
, char *special
)
1349 struct ieeeSection
*seg
;
1350 int used_special
; /* have we used the special text? */
1352 /* Keep compiler from warning about special and used_special */
1353 used_special
= special
? FALSE
: FALSE
;
1356 * If it's a special-retry from pass two, discard it.
1362 * First check for the double-period, signifying something
1365 if (name
[0] == '.' && name
[1] == '.' && name
[2] != '@') {
1372 if (ieee_seg_needs_update
)
1374 if (segment
< SEG_ABS
&& segment
!= NO_SEG
&& segment
% 2)
1377 if (segment
>= SEG_ABS
|| segment
== NO_SEG
) {
1382 * If `any_segs' is still FALSE, we might need to define a
1383 * default segment, if they're trying to declare a label in
1384 * `first_seg'. But the label should exist due to a prior
1385 * call to ieee_deflabel so we can skip that.
1388 for (seg
= seghead
; seg
; seg
= seg
->next
)
1389 if (seg
->index
== segment
) {
1390 struct ieeePublic
*loc
;
1392 * Case (ii). Maybe MODPUB someday?
1395 last_defined
= loc
= nasm_malloc(sizeof(*loc
));
1396 *seg
->loctail
= loc
;
1397 seg
->loctail
= &loc
->next
;
1399 loc
->name
= nasm_strdup(name
);
1400 loc
->offset
= offset
;
1402 loc
->index
= seg
->ieee_index
;
1406 static void dbgls_typevalue(long type
)
1408 int elem
= TYM_ELEMENTS(type
);
1409 type
= TYM_TYPE(type
);
1416 last_defined
->type
= 1; /* unsigned char */
1419 last_defined
->type
= 3; /* unsigned word */
1422 last_defined
->type
= 5; /* unsigned dword */
1425 last_defined
->type
= 9; /* float */
1428 last_defined
->type
= 10; /* qword */
1431 last_defined
->type
= 11; /* TBYTE */
1434 last_defined
->type
= 0x10; /* near label */
1439 struct Array
*arrtmp
= nasm_malloc(sizeof(*arrtmp
));
1440 int vtype
= last_defined
->type
;
1441 arrtmp
->size
= elem
;
1442 arrtmp
->basetype
= vtype
;
1443 arrtmp
->next
= NULL
;
1444 last_defined
->type
= arrindex
++ + 0x100;
1446 arrtail
= &(arrtmp
->next
);
1448 last_defined
= NULL
;
1450 static void dbgls_output(int output_type
, void *param
)
1455 static struct dfmt ladsoft_debug_form
= {
1456 "LADsoft Debug Records",
1466 static struct dfmt
*ladsoft_debug_arr
[3] = {
1467 &ladsoft_debug_form
,
1471 struct ofmt of_ieee
= {
1472 "IEEE-695 (LADsoft variant) object file format",
1489 #endif /* OF_IEEE */