use remote-utils facilities for baud_rate
[deliverable/binutils-gdb.git] / gdb / defs.h
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1/* Basic, host-specific, and target-specific definitions for GDB.
2 Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
3
4This file is part of GDB.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#if !defined (DEFS_H)
21#define DEFS_H 1
22
23#include <stdio.h>
24
25/* First include ansidecl.h so we can use the various macro definitions
26 here and in all subsequent file inclusions. */
27
28#include "ansidecl.h"
29
30/* An address in the program being debugged. Host byte order. */
31typedef unsigned int CORE_ADDR;
32
33#define min(a, b) ((a) < (b) ? (a) : (b))
34#define max(a, b) ((a) > (b) ? (a) : (b))
35
36/* Gdb does *lots* of string compares. Use macros to speed them up by
37 avoiding function calls if the first characters are not the same. */
38
39#define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
40#define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
41#define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
42
43/* The character GNU C++ uses to build identifiers that must be unique from
44 the program's identifiers (such as $this and $$vptr). */
45#define CPLUS_MARKER '$' /* May be overridden to '.' for SysV */
46
47#include <errno.h> /* System call error return status */
48
49extern int quit_flag;
50extern int immediate_quit;
51extern int sevenbit_strings;
52
53extern void
54quit PARAMS ((void));
55
56#define QUIT { if (quit_flag) quit (); }
57
58/* Command classes are top-level categories into which commands are broken
59 down for "help" purposes.
60 Notes on classes: class_alias is for alias commands which are not
61 abbreviations of the original command. class-pseudo is for commands
62 which are not really commands nor help topics ("stop"). */
63
64enum command_class
65{
66 /* Special args to help_list */
67 all_classes = -2, all_commands = -1,
68 /* Classes of commands */
69 no_class = -1, class_run = 0, class_vars, class_stack,
70 class_files, class_support, class_info, class_breakpoint,
71 class_alias, class_obscure, class_user, class_maintenance,
72 class_pseudo
73};
74
75/* Languages represented in the symbol table and elsewhere.
76 This should probably be in language.h, but since enum's can't
77 be forward declared to satisfy opaque references before their
78 actual definition, needs to be here. */
79
80enum language
81{
82 language_unknown, /* Language not known */
83 language_auto, /* Placeholder for automatic setting */
84 language_c, /* C */
85 language_cplus, /* C++ */
86 language_chill, /* Chill */
87 language_m2 /* Modula-2 */
88};
89
90/* the cleanup list records things that have to be undone
91 if an error happens (descriptors to be closed, memory to be freed, etc.)
92 Each link in the chain records a function to call and an
93 argument to give it.
94
95 Use make_cleanup to add an element to the cleanup chain.
96 Use do_cleanups to do all cleanup actions back to a given
97 point in the chain. Use discard_cleanups to remove cleanups
98 from the chain back to a given point, not doing them. */
99
100struct cleanup
101{
102 struct cleanup *next;
103 void (*function) PARAMS ((PTR));
104 PTR arg;
105};
106
107/* From blockframe.c */
108
109extern int
110inside_entry_func PARAMS ((CORE_ADDR));
111
112extern int
113inside_entry_file PARAMS ((CORE_ADDR addr));
114
115extern int
116inside_main_func PARAMS ((CORE_ADDR pc));
117
118/* From ch-lang.c, for the moment. (FIXME) */
119
120extern char *
121chill_demangle PARAMS ((const char *));
122
123/* From libiberty.a */
124
125extern char *
126cplus_demangle PARAMS ((const char *, int));
127
128extern char *
129cplus_mangle_opname PARAMS ((char *, int));
130
131/* From libmmalloc.a (memory mapped malloc library) */
132
133extern PTR
134mmalloc_attach PARAMS ((int, PTR));
135
136extern PTR
137mmalloc_detach PARAMS ((PTR));
138
139extern PTR
140mmalloc PARAMS ((PTR, long));
141
142extern PTR
143mrealloc PARAMS ((PTR, PTR, long));
144
145extern void
146mfree PARAMS ((PTR, PTR));
147
148extern int
149mmalloc_setkey PARAMS ((PTR, int, PTR));
150
151extern PTR
152mmalloc_getkey PARAMS ((PTR, int));
153
154/* From utils.c */
155
156extern int
157strcmp_iw PARAMS ((const char *, const char *));
158
159extern char *
160safe_strerror PARAMS ((int));
161
162extern char *
163safe_strsignal PARAMS ((int));
164
165extern void
166init_malloc PARAMS ((void *));
167
168extern void
169request_quit PARAMS ((int));
170
171extern void
172do_cleanups PARAMS ((struct cleanup *));
173
174extern void
175discard_cleanups PARAMS ((struct cleanup *));
176
177/* The bare make_cleanup function is one of those rare beasts that
178 takes almost any type of function as the first arg and anything that
179 will fit in a "void *" as the second arg.
180
181 Should be, once all calls and called-functions are cleaned up:
182extern struct cleanup *
183make_cleanup PARAMS ((void (*function) (PTR), PTR));
184
185 Until then, lint and/or various type-checking compiler options will
186 complain about make_cleanup calls. It'd be wrong to just cast things,
187 since the type actually passed when the function is called would be
188 wrong. */
189
190extern struct cleanup *
191make_cleanup ();
192
193extern struct cleanup *
194save_cleanups PARAMS ((void));
195
196extern void
197restore_cleanups PARAMS ((struct cleanup *));
198
199extern void
200free_current_contents PARAMS ((char **));
201
202extern void
203null_cleanup PARAMS ((char **));
204
205extern int
206myread PARAMS ((int, char *, int));
207
208extern int
209query ();
210
211extern void
212begin_line PARAMS ((void));
213
214extern void
215wrap_here PARAMS ((char *));
216
217extern void
218reinitialize_more_filter PARAMS ((void));
219
220extern int
221print_insn PARAMS ((CORE_ADDR, FILE *));
222
223extern void
224fputs_filtered PARAMS ((const char *, FILE *));
225
226extern void
227puts_filtered PARAMS ((char *));
228
229extern void
230vprintf_filtered ();
231
232extern void
233vfprintf_filtered ();
234
235extern void
236fprintf_filtered ();
237
238extern void
239fprintfi_filtered ();
240
241extern void
242printf_filtered ();
243
244extern void
245printfi_filtered ();
246
247extern void
248print_spaces PARAMS ((int, FILE *));
249
250extern void
251print_spaces_filtered PARAMS ((int, FILE *));
252
253extern char *
254n_spaces PARAMS ((int));
255
256extern void
257gdb_printchar PARAMS ((int, FILE *, int));
258
259extern void
260fprintf_symbol_filtered PARAMS ((FILE *, char *, enum language, int));
261
262extern void
263perror_with_name PARAMS ((char *));
264
265extern void
266print_sys_errmsg PARAMS ((char *, int));
267
268/* From regex.c */
269
270extern char *
271re_comp PARAMS ((char *));
272
273/* From symfile.c */
274
275extern void
276symbol_file_command PARAMS ((char *, int));
277
278/* From main.c */
279
280extern char *
281skip_quoted PARAMS ((char *));
282
283extern char *
284gdb_readline PARAMS ((char *));
285
286extern char *
287command_line_input PARAMS ((char *, int));
288
289extern void
290print_prompt PARAMS ((void));
291
292extern int
293batch_mode PARAMS ((void));
294
295extern int
296input_from_terminal_p PARAMS ((void));
297
298/* From printcmd.c */
299
300extern void
301set_next_address PARAMS ((CORE_ADDR));
302
303extern void
304print_address_symbolic PARAMS ((CORE_ADDR, FILE *, int, char *));
305
306extern void
307print_address PARAMS ((CORE_ADDR, FILE *));
308
309/* From source.c */
310
311extern int
312openp PARAMS ((char *, int, char *, int, int, char **));
313
314extern void
315mod_path PARAMS ((char *, char **));
316
317extern void
318directory_command PARAMS ((char *, int));
319
320extern void
321init_source_path PARAMS ((void));
322
323/* From findvar.c */
324
325extern int
326read_relative_register_raw_bytes PARAMS ((int, char *));
327
328/* From readline (but not in any readline .h files). */
329
330extern char *
331tilde_expand PARAMS ((char *));
332
333/* Structure for saved commands lines
334 (for breakpoints, defined commands, etc). */
335
336struct command_line
337{
338 struct command_line *next;
339 char *line;
340};
341
342extern struct command_line *
343read_command_lines PARAMS ((void));
344
345extern void
346free_command_lines PARAMS ((struct command_line **));
347
348/* String containing the current directory (what getwd would return). */
349
350extern char *current_directory;
351
352/* Default radixes for input and output. Only some values supported. */
353extern unsigned input_radix;
354extern unsigned output_radix;
355
356/* Possibilities for prettyprint parameters to routines which print
357 things. Like enum language, this should be in value.h, but needs
358 to be here for the same reason. FIXME: If we can eliminate this
359 as an arg to LA_VAL_PRINT, then we can probably move it back to
360 value.h. */
361
362enum val_prettyprint
363{
364 Val_no_prettyprint = 0,
365 Val_prettyprint,
366 /* Use the default setting which the user has specified. */
367 Val_pretty_default
368};
369
370\f
371/* Host machine definition. This will be a symlink to one of the
372 xm-*.h files, built by the `configure' script. */
373
374#include "xm.h"
375
376/* Native machine support. This will be a symlink to one of the
377 nm-*.h files, built by the `configure' script. */
378
379#include "nm.h"
380
381/* If the xm.h file did not define the mode string used to open the
382 files, assume that binary files are opened the same way as text
383 files */
384#ifndef FOPEN_RB
385#include "fopen-same.h"
386#endif
387
388/*
389 * Allow things in gdb to be declared "const". If compiling ANSI, it
390 * just works. If compiling with gcc but non-ansi, redefine to __const__.
391 * If non-ansi, non-gcc, then eliminate "const" entirely, making those
392 * objects be read-write rather than read-only.
393 */
394
395#ifndef const
396#ifndef __STDC__
397# ifdef __GNUC__
398# define const __const__
399# else
400# define const /*nothing*/
401# endif /* GNUC */
402#endif /* STDC */
403#endif /* const */
404
405#ifndef volatile
406#ifndef __STDC__
407# ifdef __GNUC__
408# define volatile __volatile__
409# else
410# define volatile /*nothing*/
411# endif /* GNUC */
412#endif /* STDC */
413#endif /* volatile */
414
415#if 1
416#define NORETURN /*nothing*/
417#else /* not 1 */
418/* FIXME: This is bogus. Having "volatile void" mean a function doesn't
419 return is a gcc extension and should be based on #ifdef __GNUC__.
420 Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
421 reasons (so declaring exit here as "volatile void" and as "void" in
422 a system header loses). Using the new "__attributes__ ((noreturn));"
423 syntax would lose for old versions of gcc; using
424 typedef void exit_fn_type PARAMS ((int));
425 volatile exit_fn_type exit;
426 would win. */
427/* Some compilers (many AT&T SVR4 compilers for instance), do not accept
428 declarations of functions that never return (exit for instance) as
429 "volatile void". For such compilers "NORETURN" can be defined away
430 to keep them happy */
431
432#ifndef NORETURN
433# ifdef __lucid
434# define NORETURN /*nothing*/
435# else
436# define NORETURN volatile
437# endif
438#endif
439#endif /* not 1 */
440
441/* Defaults for system-wide constants (if not defined by xm.h, we fake it). */
442
443#if !defined (UINT_MAX)
444#define UINT_MAX ((unsigned int)(~0)) /* 0xFFFFFFFF for 32-bits */
445#endif
446
447#if !defined (INT_MAX)
448#define INT_MAX ((int)(UINT_MAX >> 1)) /* 0x7FFFFFFF for 32-bits */
449#endif
450
451#if !defined (INT_MIN)
452#define INT_MIN (-INT_MAX - 1) /* 0x80000000 for 32-bits */
453#endif
454
455#if !defined (ULONG_MAX)
456#define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF for 32-bits */
457#endif
458
459#if !defined (LONG_MAX)
460#define LONG_MAX ((long)(ULONG_MAX >> 1)) /* 0x7FFFFFFF for 32-bits */
461#endif
462
463/* Number of bits in a char or unsigned char for the target machine.
464 Just like CHAR_BIT in <limits.h> but describes the target machine. */
465#if !defined (TARGET_CHAR_BIT)
466#define TARGET_CHAR_BIT 8
467#endif
468
469/* Number of bits in a short or unsigned short for the target machine. */
470#if !defined (TARGET_SHORT_BIT)
471#define TARGET_SHORT_BIT (sizeof (short) * TARGET_CHAR_BIT)
472#endif
473
474/* Number of bits in an int or unsigned int for the target machine. */
475#if !defined (TARGET_INT_BIT)
476#define TARGET_INT_BIT (sizeof (int) * TARGET_CHAR_BIT)
477#endif
478
479/* Number of bits in a long or unsigned long for the target machine. */
480#if !defined (TARGET_LONG_BIT)
481#define TARGET_LONG_BIT (sizeof (long) * TARGET_CHAR_BIT)
482#endif
483
484/* Number of bits in a long long or unsigned long long for the target machine. */
485#if !defined (TARGET_LONG_LONG_BIT)
486#define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
487#endif
488
489/* Number of bits in a float for the target machine. */
490#if !defined (TARGET_FLOAT_BIT)
491#define TARGET_FLOAT_BIT (sizeof (float) * TARGET_CHAR_BIT)
492#endif
493
494/* Number of bits in a double for the target machine. */
495#if !defined (TARGET_DOUBLE_BIT)
496#define TARGET_DOUBLE_BIT (sizeof (double) * TARGET_CHAR_BIT)
497#endif
498
499/* Number of bits in a long double for the target machine. */
500#if !defined (TARGET_LONG_DOUBLE_BIT)
501#define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
502#endif
503
504/* Number of bits in a "complex" for the target machine. */
505#if !defined (TARGET_COMPLEX_BIT)
506#define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
507#endif
508
509/* Number of bits in a "double complex" for the target machine. */
510#if !defined (TARGET_DOUBLE_COMPLEX_BIT)
511#define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
512#endif
513
514/* Number of bits in a pointer for the target machine */
515#if !defined (TARGET_PTR_BIT)
516#define TARGET_PTR_BIT TARGET_INT_BIT
517#endif
518
519/* Default to support for "long long" if the host compiler being used is gcc.
520 Config files must define CC_HAS_LONG_LONG to use other host compilers
521 that are capable of supporting "long long", and to cause gdb to use that
522 support. Not defining CC_HAS_LONG_LONG will suppress use of "long long"
523 regardless of what compiler is used.
524
525 FIXME: For now, automatic selection of "long long" as the default when
526 gcc is used is disabled, pending further testing. Concerns include the
527 impact on gdb performance and the universality of bugfree long long
528 support on platforms that do have gcc. Compiling with FORCE_LONG_LONG
529 will select "long long" use for testing purposes. -fnf */
530
531#ifndef CC_HAS_LONG_LONG
532# if defined (__GNUC__) && defined (FORCE_LONG_LONG) /* See FIXME above */
533# define CC_HAS_LONG_LONG 1
534# endif
535#endif
536
537/* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
538 CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
539 variables and we wish to make use of that support. */
540
541#ifndef LONGEST
542# ifdef CC_HAS_LONG_LONG
543# define LONGEST long long
544# else
545# define LONGEST long
546# endif
547#endif
548
549/* Convert a LONGEST to an int. This is used in contexts (e.g. number of
550 arguments to a function, number in a value history, register number, etc.)
551 where the value must not be larger than can fit in an int. */
552
553#ifndef longest_to_int
554# ifdef CC_HAS_LONG_LONG
555# define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
556 ? (error ("Value out of range."),0) : (int) (x))
557# else
558 /* Assume sizeof (int) == sizeof (long). */
559# define longest_to_int(x) ((int) (x))
560# endif
561#endif
562
563/* If we picked up a copy of CHAR_BIT from a configuration file
564 (which may get it by including <limits.h>) then use it to set
565 the number of bits in a host char. If not, use the same size
566 as the target. */
567
568#if defined (CHAR_BIT)
569#define HOST_CHAR_BIT CHAR_BIT
570#else
571#define HOST_CHAR_BIT TARGET_CHAR_BIT
572#endif
573
574/* Assorted functions we can declare, now that const and volatile are
575 defined. */
576
577extern char *
578savestring PARAMS ((const char *, int));
579
580extern char *
581msavestring PARAMS ((void *, const char *, int));
582
583extern char *
584strsave PARAMS ((const char *));
585
586extern char *
587mstrsave PARAMS ((void *, const char *));
588
589extern char *
590concat PARAMS ((char *, ...));
591
592extern PTR
593xmalloc PARAMS ((long));
594
595extern PTR
596xrealloc PARAMS ((PTR, long));
597
598extern PTR
599xmmalloc PARAMS ((PTR, long));
600
601extern PTR
602xmrealloc PARAMS ((PTR, PTR, long));
603
604extern PTR
605mmalloc PARAMS ((PTR, long));
606
607extern PTR
608mrealloc PARAMS ((PTR, PTR, long));
609
610extern void
611mfree PARAMS ((PTR, PTR));
612
613extern int
614mmcheck PARAMS ((PTR, void (*) (void)));
615
616extern int
617mmtrace PARAMS ((void));
618
619extern int
620parse_escape PARAMS ((char **));
621
622extern const char * const reg_names[];
623
624extern NORETURN void /* Does not return to the caller. */
625error ();
626
627extern NORETURN void /* Does not return to the caller. */
628fatal ();
629
630extern NORETURN void /* Not specified as volatile in ... */
631exit PARAMS ((int)); /* 4.10.4.3 */
632
633extern NORETURN void /* Does not return to the caller. */
634nomem PARAMS ((long));
635
636/* Reasons for calling return_to_top_level. */
637enum return_reason {
638 /* User interrupt. */
639 RETURN_QUIT,
640
641 /* Any other error. */
642 RETURN_ERROR
643};
644
645#define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
646#define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
647#define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
648typedef int return_mask;
649
650extern NORETURN void /* Does not return to the caller. */
651return_to_top_level PARAMS ((enum return_reason));
652
653extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
654 return_mask));
655
656extern void
657warning_setup PARAMS ((void));
658
659extern void
660warning ();
661
662/* Global functions from other, non-gdb GNU thingies (libiberty for
663 instance) */
664
665extern char *
666basename PARAMS ((char *));
667
668extern char *
669getenv PARAMS ((const char *));
670
671extern char **
672buildargv PARAMS ((char *));
673
674extern void
675freeargv PARAMS ((char **));
676
677extern char *
678strerrno PARAMS ((int));
679
680extern char *
681strsigno PARAMS ((int));
682
683extern int
684errno_max PARAMS ((void));
685
686extern int
687signo_max PARAMS ((void));
688
689extern int
690strtoerrno PARAMS ((char *));
691
692extern int
693strtosigno PARAMS ((char *));
694
695extern char *
696strsignal PARAMS ((int));
697
698/* From other system libraries */
699
700#ifndef PSIGNAL_IN_SIGNAL_H
701extern void
702psignal PARAMS ((unsigned, const char *));
703#endif
704
705/* For now, we can't include <stdlib.h> because it conflicts with
706 "../include/getopt.h". (FIXME)
707
708 However, if a function is defined in the ANSI C standard and a prototype
709 for that function is defined and visible in any header file in an ANSI
710 conforming environment, then that prototype must match the definition in
711 the ANSI standard. So we can just duplicate them here without conflict,
712 since they must be the same in all conforming ANSI environments. If
713 these cause problems, then the environment is not ANSI conformant. */
714
715#ifdef __STDC__
716#include <stddef.h>
717#endif
718
719extern int
720fclose PARAMS ((FILE *stream)); /* 4.9.5.1 */
721
722extern void
723perror PARAMS ((const char *)); /* 4.9.10.4 */
724
725extern double
726atof PARAMS ((const char *nptr)); /* 4.10.1.1 */
727
728extern int
729atoi PARAMS ((const char *)); /* 4.10.1.2 */
730
731#ifndef MALLOC_INCOMPATIBLE
732
733extern PTR
734malloc PARAMS ((size_t size)); /* 4.10.3.3 */
735
736extern PTR
737realloc PARAMS ((void *ptr, size_t size)); /* 4.10.3.4 */
738
739extern void
740free PARAMS ((void *)); /* 4.10.3.2 */
741
742#endif /* MALLOC_INCOMPATIBLE */
743
744extern void
745qsort PARAMS ((void *base, size_t nmemb, /* 4.10.5.2 */
746 size_t size,
747 int (*comp)(const void *, const void *)));
748
749#ifndef MEM_FNS_DECLARED /* Some non-ANSI use void *, not char *. */
750extern PTR
751memcpy PARAMS ((void *, const void *, size_t)); /* 4.11.2.1 */
752
753extern int
754memcmp PARAMS ((const void *, const void *, size_t)); /* 4.11.4.1 */
755#endif
756
757extern char *
758strchr PARAMS ((const char *, int)); /* 4.11.5.2 */
759
760extern char *
761strrchr PARAMS ((const char *, int)); /* 4.11.5.5 */
762
763extern char *
764strstr PARAMS ((const char *, const char *)); /* 4.11.5.7 */
765
766extern char *
767strtok PARAMS ((char *, const char *)); /* 4.11.5.8 */
768
769#ifndef MEM_FNS_DECLARED /* Some non-ANSI use void *, not char *. */
770extern PTR
771memset PARAMS ((void *, int, size_t)); /* 4.11.6.1 */
772#endif
773
774extern char *
775strerror PARAMS ((int)); /* 4.11.6.2 */
776
777/* Various possibilities for alloca. */
778#ifndef alloca
779# ifdef __GNUC__
780# define alloca __builtin_alloca
781# else
782# ifdef sparc
783# include <alloca.h> /* NOTE: Doesn't declare alloca() */
784# endif
785# ifdef __STDC__
786 extern void *alloca (size_t);
787# else /* __STDC__ */
788 extern char *alloca ();
789# endif
790# endif
791#endif
792
793/* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these. */
794
795#if !defined (BIG_ENDIAN)
796#define BIG_ENDIAN 4321
797#endif
798
799#if !defined (LITTLE_ENDIAN)
800#define LITTLE_ENDIAN 1234
801#endif
802
803/* Target-system-dependent parameters for GDB. */
804
805/* Target machine definition. This will be a symlink to one of the
806 tm-*.h files, built by the `configure' script. */
807
808#include "tm.h"
809
810/* The bit byte-order has to do just with numbering of bits in
811 debugging symbols and such. Conceptually, it's quite separate
812 from byte/word byte order. */
813
814#if !defined (BITS_BIG_ENDIAN)
815#if TARGET_BYTE_ORDER == BIG_ENDIAN
816#define BITS_BIG_ENDIAN 1
817#endif /* Big endian. */
818
819#if TARGET_BYTE_ORDER == LITTLE_ENDIAN
820#define BITS_BIG_ENDIAN 0
821#endif /* Little endian. */
822#endif /* BITS_BIG_ENDIAN not defined. */
823
824/* Swap LEN bytes at BUFFER between target and host byte-order. This is
825 the wrong way to do byte-swapping because it assumes that you have a way
826 to have a host variable of exactly the right size.
827 extract_* are the right way. */
828#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
829#define SWAP_TARGET_AND_HOST(buffer,len)
830#else /* Target and host byte order differ. */
831#define SWAP_TARGET_AND_HOST(buffer,len) \
832 { \
833 char tmp; \
834 char *p = (char *)(buffer); \
835 char *q = ((char *)(buffer)) + len - 1; \
836 for (; p < q; p++, q--) \
837 { \
838 tmp = *q; \
839 *q = *p; \
840 *p = tmp; \
841 } \
842 }
843#endif /* Target and host byte order differ. */
844
845/* In findvar.c. */
846LONGEST extract_signed_integer PARAMS ((void *, int));
847unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
848CORE_ADDR extract_address PARAMS ((void *, int));
849
850void store_signed_integer PARAMS ((void *, int, LONGEST));
851void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
852void store_address PARAMS ((void *, int, CORE_ADDR));
853\f
854/* On some machines there are bits in addresses which are not really
855 part of the address, but are used by the kernel, the hardware, etc.
856 for special purposes. ADDR_BITS_REMOVE takes out any such bits
857 so we get a "real" address such as one would find in a symbol
858 table. ADDR_BITS_SET sets those bits the way the system wants
859 them. This is used only for addresses of instructions, and even then
860 I'm not sure it's used in all contexts. It exists to deal with there
861 being a few stray bits in the PC which would mislead us, not as some sort
862 of generic thing to handle alignment or segmentation. */
863#if !defined (ADDR_BITS_REMOVE)
864#define ADDR_BITS_REMOVE(addr) (addr)
865#define ADDR_BITS_SET(addr) (addr)
866#endif /* No ADDR_BITS_REMOVE. */
867
868/* From valops.c */
869
870extern CORE_ADDR
871push_bytes PARAMS ((CORE_ADDR, char *, int));
872
873/* In some modules, we don't have a definition of REGISTER_TYPE yet, so we
874 must avoid prototyping this function for now. FIXME. Should be:
875extern CORE_ADDR
876push_word PARAMS ((CORE_ADDR, REGISTER_TYPE));
877 */
878extern CORE_ADDR
879push_word ();
880
881/* Some parts of gdb might be considered optional, in the sense that they
882 are not essential for being able to build a working, usable debugger
883 for a specific environment. For example, the maintenance commands
884 are there for the benefit of gdb maintainers. As another example,
885 some environments really don't need gdb's that are able to read N
886 different object file formats. In order to make it possible (but
887 not necessarily recommended) to build "stripped down" versions of
888 gdb, the following defines control selective compilation of those
889 parts of gdb which can be safely left out when necessary. Note that
890 the default is to include everything. */
891
892#ifndef MAINTENANCE_CMDS
893#define MAINTENANCE_CMDS 1
894#endif
895
896#endif /* !defined (DEFS_H) */
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