source: trunk/src/binutils/gas/as.h@ 10

Last change on this file since 10 was 10, checked in by bird, 22 years ago

Initial revision

  • Property cvs2svn:cvs-rev set to 1.1
  • Property svn:eol-style set to native
  • Property svn:executable set to *
File size: 18.8 KB
Line 
1/* as.h - global header file
2 Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001
4 Free Software Foundation, Inc.
5
6 This file is part of GAS, the GNU Assembler.
7
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA. */
22
23#ifndef GAS
24#define GAS 1
25/* I think this stuff is largely out of date. xoxorich.
26 *
27 * CAPITALISED names are #defined.
28 * "lowercaseH" is #defined if "lowercase.h" has been #include-d.
29 * "lowercaseT" is a typedef of "lowercase" objects.
30 * "lowercaseP" is type "pointer to object of type 'lowercase'".
31 * "lowercaseS" is typedef struct ... lowercaseS.
32 *
33 * #define DEBUG to enable all the "know" assertion tests.
34 * #define SUSPECT when debugging hash code.
35 * #define COMMON as "extern" for all modules except one, where you #define
36 * COMMON as "".
37 * If TEST is #defined, then we are testing a module: #define COMMON as "".
38 */
39
40#include "config.h"
41#include "bin-bugs.h"
42
43/* This is the code recommended in the autoconf documentation, almost
44 verbatim. If it doesn't work for you, let me know, and notify
45 djm@gnu.ai.mit.edu as well. */
46/* Added #undef for DJ Delorie. The right fix is to ensure that as.h
47 is included first, before even any system header files, in all files
48 that use it. KR 1994.11.03 */
49/* Added void* version for STDC case. This is to be compatible with
50 the declaration in bison.simple, used for m68k operand parsing.
51 --KR 1995.08.08 */
52/* Force void* decl for hpux. This is what Bison uses. --KR 1995.08.16 */
53
54/* AIX requires this to be the first thing in the file. */
55#ifdef __GNUC__
56# ifndef alloca
57# ifdef __STDC__
58extern void *alloca ();
59# else
60extern char *alloca ();
61# endif
62# endif
63#else
64# if HAVE_ALLOCA_H
65# include <alloca.h>
66# else
67# ifdef _AIX
68 #pragma alloca
69# else
70# ifndef alloca /* predefined by HP cc +Olibcalls */
71# if !defined (__STDC__) && !defined (__hpux)
72extern char *alloca ();
73# else
74extern void *alloca ();
75# endif /* __STDC__, __hpux */
76# endif /* alloca */
77# endif /* _AIX */
78# endif /* HAVE_ALLOCA_H */
79#endif
80
81/* Now, tend to the rest of the configuration. */
82
83/* System include files first... */
84#include <stdio.h>
85#include <ctype.h>
86#ifdef HAVE_STRING_H
87#include <string.h>
88#else
89#ifdef HAVE_STRINGS_H
90#include <strings.h>
91#endif
92#endif
93#ifdef HAVE_STDLIB_H
94#include <stdlib.h>
95#endif
96#ifdef HAVE_UNISTD_H
97#include <unistd.h>
98#endif
99#ifdef HAVE_SYS_TYPES_H
100/* for size_t, pid_t */
101#include <sys/types.h>
102#endif
103
104#include <getopt.h>
105/* The first getopt value for machine-independent long options.
106 150 isn't special; it's just an arbitrary non-ASCII char value. */
107#define OPTION_STD_BASE 150
108/* The first getopt value for machine-dependent long options.
109 190 gives the standard options room to grow. */
110#define OPTION_MD_BASE 190
111
112#ifdef DEBUG
113#undef NDEBUG
114#endif
115#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
116#define __PRETTY_FUNCTION__ ((char*)0)
117#endif
118#if 0
119
120/* Handle lossage with assert.h. */
121#ifndef BROKEN_ASSERT
122#include <assert.h>
123#else /* BROKEN_ASSERT */
124#ifndef NDEBUG
125#define assert(p) ((p) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))
126#else
127#define assert(p) ((p), 0)
128#endif
129#endif /* BROKEN_ASSERT */
130
131#else
132
133#define assert(P) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))
134#undef abort
135#define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
136
137#endif
138
139/* Now GNU header files... */
140#include "ansidecl.h"
141#ifdef BFD_ASSEMBLER
142#include "bfd.h"
143#endif
144#include "libiberty.h"
145
146/* Define the standard progress macros. */
147#include "progress.h"
148
149/* This doesn't get taken care of anywhere. */
150#ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */
151#if !defined (__GNUC__) && !defined (inline)
152#define inline
153#endif
154#endif /* !__MWERKS__ */
155
156/* Other stuff from config.h. */
157#ifdef NEED_DECLARATION_STRSTR
158extern char *strstr ();
159#endif
160#ifdef NEED_DECLARATION_MALLOC
161extern PTR malloc ();
162extern PTR realloc ();
163#endif
164#ifdef NEED_DECLARATION_FREE
165extern void free ();
166#endif
167#ifdef NEED_DECLARATION_ERRNO
168extern int errno;
169#endif
170#ifdef NEED_DECLARATION_ENVIRON
171extern char **environ;
172#endif
173
174/* This is needed for VMS. */
175#if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
176#define unlink remove
177#endif
178
179/* Hack to make "gcc -Wall" not complain about obstack macros. */
180#if !defined (memcpy) && !defined (bcopy)
181#define bcopy(src,dest,size) memcpy(dest,src,size)
182#endif
183
184/* Make Saber happier on obstack.h. */
185#ifdef SABER
186#undef __PTR_TO_INT
187#define __PTR_TO_INT(P) ((int) (P))
188#undef __INT_TO_PTR
189#define __INT_TO_PTR(P) ((char *) (P))
190#endif
191
192#ifndef __LINE__
193#define __LINE__ "unknown"
194#endif /* __LINE__ */
195
196#ifndef __FILE__
197#define __FILE__ "unknown"
198#endif /* __FILE__ */
199
200#ifndef FOPEN_WB
201#ifdef GO32
202#include "fopen-bin.h"
203#else
204#include "fopen-same.h"
205#endif
206#endif
207
208#ifndef EXIT_SUCCESS
209#define EXIT_SUCCESS 0
210#define EXIT_FAILURE 1
211#endif
212
213#ifndef SEEK_SET
214#define SEEK_SET 0
215#endif
216
217#define obstack_chunk_alloc xmalloc
218#define obstack_chunk_free xfree
219
220#define xfree free
221
222#include "asintl.h"
223
224#define BAD_CASE(val) \
225 { \
226 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
227 (long) val, __LINE__, __FILE__); \
228 }
229
230
231#include "flonum.h"
232
233/* These are assembler-wide concepts */
234
235#ifdef BFD_ASSEMBLER
236extern bfd *stdoutput;
237typedef bfd_vma addressT;
238typedef bfd_signed_vma offsetT;
239#else
240typedef unsigned long addressT;
241typedef long offsetT;
242#endif
243
244/* Type of symbol value, etc. For use in prototypes. */
245typedef addressT valueT;
246
247#ifndef COMMON
248#ifdef TEST
249#define COMMON /* declare our COMMONs storage here. */
250#else
251#define COMMON extern /* our commons live elswhere */
252#endif
253#endif
254/* COMMON now defined */
255
256#ifdef DEBUG
257#ifndef know
258#define know(p) assert(p) /* Verify our assumptions! */
259#endif /* not yet defined */
260#else
261#define know(p) /* know() checks are no-op.ed */
262#endif
263
264
265/* input_scrub.c */
266
267/* Supplies sanitised buffers to read.c.
268 Also understands printing line-number part of error messages. */
269
270
271/* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
272
273#ifndef BFD_ASSEMBLER
274
275#ifdef MANY_SEGMENTS
276#include "bfd.h"
277#define N_SEGMENTS 40
278#define SEG_NORMAL(x) ((x) >= SEG_E0 && (x) <= SEG_E39)
279#define SEG_LIST SEG_E0,SEG_E1,SEG_E2,SEG_E3,SEG_E4,SEG_E5,SEG_E6,SEG_E7,SEG_E8,SEG_E9,\
280 SEG_E10,SEG_E11,SEG_E12,SEG_E13,SEG_E14,SEG_E15,SEG_E16,SEG_E17,SEG_E18,SEG_E19,\
281 SEG_E20,SEG_E21,SEG_E22,SEG_E23,SEG_E24,SEG_E25,SEG_E26,SEG_E27,SEG_E28,SEG_E29,\
282 SEG_E30,SEG_E31,SEG_E32,SEG_E33,SEG_E34,SEG_E35,SEG_E36,SEG_E37,SEG_E38,SEG_E39
283#define SEG_TEXT SEG_E0
284#define SEG_DATA SEG_E1
285#define SEG_BSS SEG_E2
286#define SEG_LAST SEG_E39
287#else
288#define N_SEGMENTS 3
289#define SEG_NORMAL(x) ((x) == SEG_TEXT || (x) == SEG_DATA || (x) == SEG_BSS)
290#define SEG_LIST SEG_TEXT,SEG_DATA,SEG_BSS
291#endif
292
293typedef enum _segT {
294 SEG_ABSOLUTE = 0,
295 SEG_LIST,
296 SEG_UNKNOWN,
297 SEG_GOOF, /* Only happens if AS has a logic error. */
298 /* Invented so we don't crash printing */
299 /* error message involving weird segment. */
300 SEG_EXPR, /* Intermediate expression values. */
301 SEG_DEBUG, /* Debug segment */
302 SEG_NTV, /* Transfert vector preload segment */
303 SEG_PTV, /* Transfert vector postload segment */
304 SEG_REGISTER /* Mythical: a register-valued expression */
305} segT;
306
307#define SEG_MAXIMUM_ORDINAL (SEG_REGISTER)
308#else
309typedef asection *segT;
310#define SEG_NORMAL(SEG) ((SEG) != absolute_section \
311 && (SEG) != undefined_section \
312 && (SEG) != reg_section \
313 && (SEG) != expr_section)
314#endif
315typedef int subsegT;
316
317/* What subseg we are accreting now? */
318COMMON subsegT now_subseg;
319
320/* Segment our instructions emit to. */
321COMMON segT now_seg;
322
323#ifdef BFD_ASSEMBLER
324#define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
325#else
326extern char const *const seg_name[];
327#define segment_name(SEG) seg_name[(int) (SEG)]
328#endif
329
330#ifndef BFD_ASSEMBLER
331extern int section_alignment[];
332#endif
333
334#ifdef BFD_ASSEMBLER
335extern segT reg_section, expr_section;
336/* Shouldn't these be eliminated someday? */
337extern segT text_section, data_section, bss_section;
338#define absolute_section bfd_abs_section_ptr
339#define undefined_section bfd_und_section_ptr
340#else
341#define reg_section SEG_REGISTER
342#define expr_section SEG_EXPR
343#define text_section SEG_TEXT
344#define data_section SEG_DATA
345#define bss_section SEG_BSS
346#define absolute_section SEG_ABSOLUTE
347#define undefined_section SEG_UNKNOWN
348#endif
349
350/* relax() */
351
352enum _relax_state {
353 /* Variable chars to be repeated fr_offset times.
354 Fr_symbol unused. Used with fr_offset == 0 for a
355 constant length frag. */
356 rs_fill = 1,
357
358 /* Align. The fr_offset field holds the power of 2 to which to
359 align. The fr_var field holds the number of characters in the
360 fill pattern. The fr_subtype field holds the maximum number of
361 bytes to skip when aligning, or 0 if there is no maximum. */
362 rs_align,
363
364 /* Align code. The fr_offset field holds the power of 2 to which
365 to align. This type is only generated by machine specific
366 code, which is normally responsible for handling the fill
367 pattern. The fr_subtype field holds the maximum number of
368 bytes to skip when aligning, or 0 if there is no maximum. */
369 rs_align_code,
370
371 /* Test for alignment. Like rs_align, but used by several targets
372 to warn if data is not properly aligned. */
373 rs_align_test,
374
375 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
376 character. */
377 rs_org,
378
379#ifndef WORKING_DOT_WORD
380 /* JF: gunpoint */
381 rs_broken_word,
382#endif
383
384 /* machine-specific relaxable (or similarly alterable) instruction */
385 rs_machine_dependent,
386
387 /* .space directive with expression operand that needs to be computed
388 later. Similar to rs_org, but different.
389 fr_symbol: operand
390 1 variable char: fill character */
391 rs_space,
392
393 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
394 unsigned, 1 for signed. */
395 rs_leb128,
396
397 /* Exception frame information which we may be able to optimize. */
398 rs_cfa,
399
400 /* Cross-fragment dwarf2 line number optimization. */
401 rs_dwarf2dbg
402};
403
404typedef enum _relax_state relax_stateT;
405
406/* This type is used in prototypes, so it can't be a type that will be
407 widened for argument passing. */
408typedef unsigned int relax_substateT;
409
410/* Enough bits for address, but still an integer type.
411 Could be a problem, cross-assembling for 64-bit machines. */
412typedef addressT relax_addressT;
413
414
415/* main program "as.c" (command arguments etc) */
416
417COMMON unsigned char flag_no_comments; /* -f */
418COMMON unsigned char flag_debug; /* -D */
419COMMON unsigned char flag_signed_overflow_ok; /* -J */
420#ifndef WORKING_DOT_WORD
421COMMON unsigned char flag_warn_displacement; /* -K */
422#endif
423
424/* True if local symbols should be retained. */
425COMMON int flag_keep_locals; /* -L */
426
427/* True if we are assembling in MRI mode. */
428COMMON int flag_mri;
429
430/* Should the data section be made read-only and appended to the text
431 section? */
432COMMON unsigned char flag_readonly_data_in_text; /* -R */
433
434/* True if warnings should be inhibited. */
435COMMON int flag_no_warnings; /* -W */
436
437/* True if warnings count as errors. */
438COMMON int flag_fatal_warnings; /* --fatal-warnings */
439
440/* True if we should attempt to generate output even if non-fatal errors
441 are detected. */
442COMMON unsigned char flag_always_generate_output; /* -Z */
443
444/* This is true if the assembler should output time and space usage. */
445COMMON unsigned char flag_print_statistics;
446
447/* True if local absolute symbols are to be stripped. */
448COMMON int flag_strip_local_absolute;
449
450/* True if we should generate a traditional format object file. */
451COMMON int flag_traditional_format;
452
453/* name of emitted object file */
454COMMON char *out_file_name;
455
456/* name of file defining extensions to the basic instruction set */
457COMMON char *insttbl_file_name;
458
459/* TRUE if we need a second pass. */
460COMMON int need_pass_2;
461
462/* TRUE if we should do no relaxing, and
463 leave lots of padding. */
464COMMON int linkrelax;
465
466/* TRUE if we should produce a listing. */
467extern int listing;
468
469/* Type of debugging information we should generate. We currently support
470 stabs, ECOFF, and DWARF2.
471
472 NOTE! This means debug information about the assembly source code itself
473 and _not_ about possible debug information from a high-level language.
474 This is especially relevant to DWARF2, since the compiler may emit line
475 number directives that the assembler resolves. */
476
477enum debug_info_type {
478 DEBUG_UNSPECIFIED,
479 DEBUG_NONE,
480 DEBUG_STABS,
481 DEBUG_ECOFF,
482 DEBUG_DWARF,
483 DEBUG_DWARF2
484};
485
486extern enum debug_info_type debug_type;
487
488
489/* Maximum level of macro nesting. */
490extern int max_macro_nest;
491
492/* Obstack chunk size. Keep large for efficient space use, make small to
493 increase malloc calls for monitoring memory allocation. */
494extern int chunksize;
495
496struct _pseudo_type {
497 /* assembler mnemonic, lower case, no '.' */
498 const char *poc_name;
499 /* Do the work */
500 void (*poc_handler) PARAMS ((int));
501 /* Value to pass to handler */
502 int poc_val;
503};
504
505typedef struct _pseudo_type pseudo_typeS;
506
507/* Prefer varargs for non-ANSI compiler, since some will barf if the
508 ellipsis definition is used with a no-arguments declaration. */
509#if defined (HAVE_VARARGS_H) && !defined (__STDC__)
510#undef HAVE_STDARG_H
511#endif
512
513#if defined (HAVE_STDARG_H)
514#define USE_STDARG
515#endif
516#if !defined (USE_STDARG) && defined (HAVE_VARARGS_H)
517#define USE_VARARGS
518#endif
519
520#ifdef USE_STDARG
521#if (__GNUC__ >= 2) && !defined(VMS)
522/* for use with -Wformat */
523
524#if __GNUC__ == 2 && __GNUC_MINOR__ < 6
525/* Support for double underscores in attribute names was added in gcc
526 2.6, so avoid them if we are using an earlier version. */
527#define __printf__ printf
528#define __format__ format
529#endif
530
531#define PRINTF_LIKE(FCN) \
532 void FCN (const char *format, ...) \
533 __attribute__ ((__format__ (__printf__, 1, 2)))
534#define PRINTF_WHERE_LIKE(FCN) \
535 void FCN (char *file, unsigned int line, const char *format, ...) \
536 __attribute__ ((__format__ (__printf__, 3, 4)))
537
538#else /* __GNUC__ < 2 || defined(VMS) */
539
540#define PRINTF_LIKE(FCN) void FCN PARAMS ((const char *format, ...))
541#define PRINTF_WHERE_LIKE(FCN) void FCN PARAMS ((char *file, \
542 unsigned int line, \
543 const char *format, ...))
544
545#endif /* __GNUC__ < 2 || defined(VMS) */
546
547#else /* ! USE_STDARG */
548
549#define PRINTF_LIKE(FCN) void FCN ()
550#define PRINTF_WHERE_LIKE(FCN) void FCN ()
551
552#endif /* ! USE_STDARG */
553
554PRINTF_LIKE (as_bad);
555PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
556PRINTF_LIKE (as_tsktsk);
557PRINTF_LIKE (as_warn);
558PRINTF_WHERE_LIKE (as_bad_where);
559PRINTF_WHERE_LIKE (as_warn_where);
560
561void as_assert PARAMS ((const char *, int, const char *));
562void as_abort PARAMS ((const char *, int, const char *)) ATTRIBUTE_NORETURN;
563
564void fprint_value PARAMS ((FILE *file, addressT value));
565void sprint_value PARAMS ((char *buf, addressT value));
566
567int had_errors PARAMS ((void));
568int had_warnings PARAMS ((void));
569
570void print_version_id PARAMS ((void));
571char *app_push PARAMS ((void));
572char *atof_ieee PARAMS ((char *str, int what_kind, LITTLENUM_TYPE * words));
573char *input_scrub_include_file PARAMS ((char *filename, char *position));
574extern void input_scrub_insert_line PARAMS((const char *line));
575extern void input_scrub_insert_file PARAMS((char *path));
576char *input_scrub_new_file PARAMS ((char *filename));
577char *input_scrub_next_buffer PARAMS ((char **bufp));
578int do_scrub_chars PARAMS ((int (*get) (char *, int), char *to, int tolen));
579int gen_to_words PARAMS ((LITTLENUM_TYPE * words, int precision,
580 long exponent_bits));
581int had_err PARAMS ((void));
582int ignore_input PARAMS ((void));
583void cond_finish_check PARAMS ((int));
584void cond_exit_macro PARAMS ((int));
585int seen_at_least_1_file PARAMS ((void));
586void app_pop PARAMS ((char *arg));
587void as_howmuch PARAMS ((FILE * stream));
588void as_perror PARAMS ((const char *gripe, const char *filename));
589void as_where PARAMS ((char **namep, unsigned int *linep));
590void bump_line_counters PARAMS ((void));
591void do_scrub_begin PARAMS ((int));
592void input_scrub_begin PARAMS ((void));
593void input_scrub_close PARAMS ((void));
594void input_scrub_end PARAMS ((void));
595int new_logical_line PARAMS ((char *fname, int line_number));
596void subsegs_begin PARAMS ((void));
597void subseg_change PARAMS ((segT seg, int subseg));
598segT subseg_new PARAMS ((const char *name, subsegT subseg));
599segT subseg_force_new PARAMS ((const char *name, subsegT subseg));
600void subseg_set PARAMS ((segT seg, subsegT subseg));
601#ifdef BFD_ASSEMBLER
602segT subseg_get PARAMS ((const char *, int));
603#endif
604int subseg_text_p PARAMS ((segT));
605
606void start_dependencies PARAMS ((char *));
607void register_dependency PARAMS ((char *));
608void print_dependencies PARAMS ((void));
609
610struct expressionS;
611struct fix;
612typedef struct symbol symbolS;
613struct relax_type;
614typedef struct frag fragS;
615
616#ifdef BFD_ASSEMBLER
617/* literal.c */
618valueT add_to_literal_pool PARAMS ((symbolS *, valueT, segT, int));
619#endif
620
621int check_eh_frame PARAMS ((struct expressionS *, unsigned int *));
622int eh_frame_estimate_size_before_relax PARAMS ((fragS *));
623int eh_frame_relax_frag PARAMS ((fragS *));
624void eh_frame_convert_frag PARAMS ((fragS *));
625
626#include "expr.h" /* Before targ-*.h */
627
628/* this one starts the chain of target dependant headers */
629#include "targ-env.h"
630
631#ifdef TC_ARC
632#include "struc-symbol.h"
633#endif
634
635#include "write.h"
636#include "frags.h"
637#include "hash.h"
638#include "read.h"
639#include "symbols.h"
640
641#include "tc.h"
642#include "obj.h"
643
644#ifdef USE_EMULATIONS
645#include "emul.h"
646#endif
647#include "listing.h"
648
649#ifdef TC_M68K
650/* True if we are assembling in m68k MRI mode. */
651COMMON int flag_m68k_mri;
652#else
653#define flag_m68k_mri 0
654#endif
655
656#ifdef WARN_COMMENTS
657COMMON int warn_comment;
658COMMON unsigned int found_comment;
659COMMON char *found_comment_file;
660#endif
661
662#ifndef NUMBERS_WITH_SUFFIX
663#define NUMBERS_WITH_SUFFIX 0
664#endif
665
666#ifndef LOCAL_LABELS_DOLLAR
667#define LOCAL_LABELS_DOLLAR 0
668#endif
669
670#ifndef LOCAL_LABELS_FB
671#define LOCAL_LABELS_FB 0
672#endif
673
674#ifndef LABELS_WITHOUT_COLONS
675#define LABELS_WITHOUT_COLONS 0
676#endif
677
678#ifndef NO_PSEUDO_DOT
679#define NO_PSEUDO_DOT 0
680#endif
681
682#ifndef TEXT_SECTION_NAME
683#define TEXT_SECTION_NAME ".text"
684#define DATA_SECTION_NAME ".data"
685#define BSS_SECTION_NAME ".bss"
686#endif
687
688#ifndef OCTETS_PER_BYTE_POWER
689#define OCTETS_PER_BYTE_POWER 0
690#endif
691#ifndef OCTETS_PER_BYTE
692#define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
693#endif
694#if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
695 #error "Octets per byte conflicts with its power-of-two definition!"
696#endif
697
698#endif /* GAS */
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