1 /* Basic, host-specific, and target-specific definitions for GDB.
2 Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
25 /* First include ansidecl.h so we can use the various macro definitions
26 here and in all subsequent file inclusions. */
30 /* An address in the program being debugged. Host byte order. */
31 typedef unsigned int CORE_ADDR;
33 #define min(a, b) ((a) < (b) ? (a) : (b))
34 #define max(a, b) ((a) > (b) ? (a) : (b))
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. */
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)
43 /* The character 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 */
47 #include <errno.h> /* System call error return status */
50 extern int immediate_quit;
51 extern int sevenbit_strings;
56 #define QUIT { if (quit_flag) quit (); }
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"). */
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,
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. */
82 language_unknown, /* Language not known */
83 language_auto, /* Placeholder for automatic setting */
85 language_cplus, /* C++ */
86 language_chill, /* Chill */
87 language_m2 /* Modula-2 */
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
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. */
102 struct cleanup *next;
103 void (*function) PARAMS ((PTR));
107 /* From blockframe.c */
110 inside_entry_func PARAMS ((CORE_ADDR));
113 inside_entry_file PARAMS ((CORE_ADDR addr));
116 inside_main_func PARAMS ((CORE_ADDR pc));
118 /* From ch-lang.c, for the moment. (FIXME) */
121 chill_demangle PARAMS ((const char *));
123 /* From libiberty.a */
126 cplus_demangle PARAMS ((const char *, int));
129 cplus_mangle_opname PARAMS ((char *, int));
131 /* From libmmalloc.a (memory mapped malloc library) */
134 mmalloc_attach PARAMS ((int, PTR));
137 mmalloc_detach PARAMS ((PTR));
140 mmalloc PARAMS ((PTR, long));
143 mrealloc PARAMS ((PTR, PTR, long));
146 mfree PARAMS ((PTR, PTR));
149 mmalloc_setkey PARAMS ((PTR, int, PTR));
152 mmalloc_getkey PARAMS ((PTR, int));
157 strcmp_iw PARAMS ((const char *, const char *));
160 safe_strerror PARAMS ((int));
163 safe_strsignal PARAMS ((int));
166 init_malloc PARAMS ((PTR));
169 request_quit PARAMS ((int));
172 do_cleanups PARAMS ((struct cleanup *));
175 discard_cleanups PARAMS ((struct cleanup *));
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.
181 Should be, once all calls and called-functions are cleaned up:
182 extern struct cleanup *
183 make_cleanup PARAMS ((void (*function) (PTR), PTR));
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
190 extern struct cleanup *
193 extern struct cleanup *
194 save_cleanups PARAMS ((void));
197 restore_cleanups PARAMS ((struct cleanup *));
200 free_current_contents PARAMS ((char **));
203 null_cleanup PARAMS ((char **));
206 myread PARAMS ((int, char *, int));
212 begin_line PARAMS ((void));
215 wrap_here PARAMS ((char *));
218 reinitialize_more_filter PARAMS ((void));
221 print_insn PARAMS ((CORE_ADDR, FILE *));
224 fputs_filtered PARAMS ((const char *, FILE *));
227 puts_filtered PARAMS ((char *));
233 vfprintf_filtered ();
239 fprintfi_filtered ();
248 print_spaces PARAMS ((int, FILE *));
251 print_spaces_filtered PARAMS ((int, FILE *));
254 n_spaces PARAMS ((int));
257 gdb_printchar PARAMS ((int, FILE *, int));
260 fprintf_symbol_filtered PARAMS ((FILE *, char *, enum language, int));
263 perror_with_name PARAMS ((char *));
266 print_sys_errmsg PARAMS ((char *, int));
271 re_comp PARAMS ((char *));
276 symbol_file_command PARAMS ((char *, int));
281 skip_quoted PARAMS ((char *));
284 gdb_readline PARAMS ((char *));
287 command_line_input PARAMS ((char *, int));
290 print_prompt PARAMS ((void));
293 batch_mode PARAMS ((void));
296 input_from_terminal_p PARAMS ((void));
299 catch_errors PARAMS ((int (*) (char *), char *, char *));
301 /* From printcmd.c */
304 set_next_address PARAMS ((CORE_ADDR));
307 print_address_symbolic PARAMS ((CORE_ADDR, FILE *, int, char *));
310 print_address PARAMS ((CORE_ADDR, FILE *));
315 openp PARAMS ((char *, int, char *, int, int, char **));
318 mod_path PARAMS ((char *, char **));
321 directory_command PARAMS ((char *, int));
324 init_source_path PARAMS ((void));
329 read_relative_register_raw_bytes PARAMS ((int, char *));
331 /* From readline (but not in any readline .h files). */
334 tilde_expand PARAMS ((char *));
336 /* Structure for saved commands lines
337 (for breakpoints, defined commands, etc). */
341 struct command_line *next;
345 extern struct command_line *
346 read_command_lines PARAMS ((void));
349 free_command_lines PARAMS ((struct command_line **));
351 /* String containing the current directory (what getwd would return). */
353 extern char *current_directory;
355 /* Default radixes for input and output. Only some values supported. */
356 extern unsigned input_radix;
357 extern unsigned output_radix;
359 /* Baud rate specified for communication with serial target systems. */
360 extern char *baud_rate;
362 /* Possibilities for prettyprint parameters to routines which print
363 things. Like enum language, this should be in value.h, but needs
364 to be here for the same reason. FIXME: If we can eliminate this
365 as an arg to LA_VAL_PRINT, then we can probably move it back to
370 Val_no_prettyprint = 0,
372 /* Use the default setting which the user has specified. */
377 /* Host machine definition. This will be a symlink to one of the
378 xm-*.h files, built by the `configure' script. */
382 /* Native machine support. This will be a symlink to one of the
383 nm-*.h files, built by the `configure' script. */
387 /* If the xm.h file did not define the mode string used to open the
388 files, assume that binary files are opened the same way as text
391 #include "fopen-same.h"
395 * Allow things in gdb to be declared "const". If compiling ANSI, it
396 * just works. If compiling with gcc but non-ansi, redefine to __const__.
397 * If non-ansi, non-gcc, then eliminate "const" entirely, making those
398 * objects be read-write rather than read-only.
404 # define const __const__
406 # define const /*nothing*/
414 # define volatile __volatile__
416 # define volatile /*nothing*/
419 #endif /* volatile */
421 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
422 declarations of functions that never return (exit for instance) as
423 "volatile void". For such compilers "NORETURN" can be defined away
424 to keep them happy */
428 # define NORETURN /*nothing*/
430 # define NORETURN volatile
434 /* Defaults for system-wide constants (if not defined by xm.h, we fake it). */
436 #if !defined (UINT_MAX)
437 #define UINT_MAX 0xffffffff
440 #if !defined (LONG_MAX)
441 #define LONG_MAX 0x7fffffff
444 #if !defined (INT_MAX)
445 #define INT_MAX 0x7fffffff
448 #if !defined (INT_MIN)
449 /* Two's complement, 32 bit. */
450 #define INT_MIN -0x80000000
453 /* Number of bits in a char or unsigned char for the target machine.
454 Just like CHAR_BIT in <limits.h> but describes the target machine. */
455 #if !defined (TARGET_CHAR_BIT)
456 #define TARGET_CHAR_BIT 8
459 /* Number of bits in a short or unsigned short for the target machine. */
460 #if !defined (TARGET_SHORT_BIT)
461 #define TARGET_SHORT_BIT (sizeof (short) * TARGET_CHAR_BIT)
464 /* Number of bits in an int or unsigned int for the target machine. */
465 #if !defined (TARGET_INT_BIT)
466 #define TARGET_INT_BIT (sizeof (int) * TARGET_CHAR_BIT)
469 /* Number of bits in a long or unsigned long for the target machine. */
470 #if !defined (TARGET_LONG_BIT)
471 #define TARGET_LONG_BIT (sizeof (long) * TARGET_CHAR_BIT)
474 /* Number of bits in a long long or unsigned long long for the target machine. */
475 #if !defined (TARGET_LONG_LONG_BIT)
476 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
479 /* Number of bits in a float for the target machine. */
480 #if !defined (TARGET_FLOAT_BIT)
481 #define TARGET_FLOAT_BIT (sizeof (float) * TARGET_CHAR_BIT)
484 /* Number of bits in a double for the target machine. */
485 #if !defined (TARGET_DOUBLE_BIT)
486 #define TARGET_DOUBLE_BIT (sizeof (double) * TARGET_CHAR_BIT)
489 /* Number of bits in a long double for the target machine. */
490 #if !defined (TARGET_LONG_DOUBLE_BIT)
491 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
494 /* Number of bits in a "complex" for the target machine. */
495 #if !defined (TARGET_COMPLEX_BIT)
496 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
499 /* Number of bits in a "double complex" for the target machine. */
500 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
501 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
504 /* Number of bits in a pointer for the target machine */
505 #if !defined (TARGET_PTR_BIT)
506 #define TARGET_PTR_BIT TARGET_INT_BIT
509 /* Default to support for "long long" if the host compiler being used is gcc.
510 Config files must define CC_HAS_LONG_LONG to use other host compilers
511 that are capable of supporting "long long", and to cause gdb to use that
512 support. Not defining CC_HAS_LONG_LONG will suppress use of "long long"
513 regardless of what compiler is used.
515 FIXME: For now, automatic selection of "long long" as the default when
516 gcc is used is disabled, pending further testing. Concerns include the
517 impact on gdb performance and the universality of bugfree long long
518 support on platforms that do have gcc. Compiling with FORCE_LONG_LONG
519 will select "long long" use for testing purposes. -fnf */
521 #ifndef CC_HAS_LONG_LONG
522 # if defined (__GNUC__) && defined (FORCE_LONG_LONG) /* See FIXME above */
523 # define CC_HAS_LONG_LONG 1
527 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
528 CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
529 variables and we wish to make use of that support. */
532 # ifdef CC_HAS_LONG_LONG
533 # define LONGEST long long
535 # define LONGEST long
539 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
540 arguments to a function, number in a value history, register number, etc.)
541 where the value must not be larger than can fit in an int. */
543 #ifndef longest_to_int
544 # ifdef CC_HAS_LONG_LONG
545 # define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
546 ? (error ("Value out of range."),0) : (int) (x))
548 /* Assume sizeof (int) == sizeof (long). */
549 # define longest_to_int(x) ((int) (x))
553 /* If we picked up a copy of CHAR_BIT from a configuration file
554 (which may get it by including <limits.h>) then use it to set
555 the number of bits in a host char. If not, use the same size
558 #if defined (CHAR_BIT)
559 #define HOST_CHAR_BIT CHAR_BIT
561 #define HOST_CHAR_BIT TARGET_CHAR_BIT
564 /* Assorted functions we can declare, now that const and volatile are
568 savestring PARAMS ((const char *, int));
571 msavestring PARAMS ((void *, const char *, int));
574 strsave PARAMS ((const char *));
577 mstrsave PARAMS ((void *, const char *));
580 concat PARAMS ((char *, ...));
583 xmalloc PARAMS ((long));
586 xrealloc PARAMS ((PTR, long));
589 xmmalloc PARAMS ((PTR, long));
592 xmrealloc PARAMS ((PTR, PTR, long));
595 mmalloc PARAMS ((PTR, long));
598 mrealloc PARAMS ((PTR, PTR, long));
601 mfree PARAMS ((PTR, PTR));
604 mmcheck PARAMS ((PTR, void (*) (void)));
607 mmtrace PARAMS ((void));
610 parse_escape PARAMS ((char **));
612 extern const char * const reg_names[];
614 extern NORETURN void /* Does not return to the caller. */
617 extern NORETURN void /* Does not return to the caller. */
620 extern NORETURN void /* Not specified as volatile in ... */
621 exit PARAMS ((int)); /* 4.10.4.3 */
623 extern NORETURN void /* Does not return to the caller. */
624 nomem PARAMS ((long));
626 extern NORETURN void /* Does not return to the caller. */
627 return_to_top_level PARAMS ((void));
630 warning_setup PARAMS ((void));
635 /* Global functions from other, non-gdb GNU thingies (libiberty for
639 basename PARAMS ((char *));
642 getenv PARAMS ((const char *));
645 buildargv PARAMS ((char *));
648 freeargv PARAMS ((char **));
651 strerrno PARAMS ((int));
654 strsigno PARAMS ((int));
657 errno_max PARAMS ((void));
660 signo_max PARAMS ((void));
663 strtoerrno PARAMS ((char *));
666 strtosigno PARAMS ((char *));
669 strsignal PARAMS ((int));
671 /* From other system libraries */
673 #ifndef PSIGNAL_IN_SIGNAL_H
675 psignal PARAMS ((unsigned, const char *));
678 /* For now, we can't include <stdlib.h> because it conflicts with
679 "../include/getopt.h". (FIXME)
681 However, if a function is defined in the ANSI C standard and a prototype
682 for that function is defined and visible in any header file in an ANSI
683 conforming environment, then that prototype must match the definition in
684 the ANSI standard. So we can just duplicate them here without conflict,
685 since they must be the same in all conforming ANSI environments. If
686 these cause problems, then the environment is not ANSI conformant. */
693 fclose PARAMS ((FILE *stream)); /* 4.9.5.1 */
696 perror PARAMS ((const char *)); /* 4.9.10.4 */
699 atof PARAMS ((const char *nptr)); /* 4.10.1.1 */
702 atoi PARAMS ((const char *)); /* 4.10.1.2 */
704 #ifndef MALLOC_INCOMPATIBLE
707 malloc PARAMS ((size_t size)); /* 4.10.3.3 */
710 realloc PARAMS ((void *ptr, size_t size)); /* 4.10.3.4 */
713 free PARAMS ((void *)); /* 4.10.3.2 */
715 #endif /* MALLOC_INCOMPATIBLE */
718 qsort PARAMS ((void *base, size_t nmemb, /* 4.10.5.2 */
720 int (*comp)(const void *, const void *)));
722 #ifndef MEM_FNS_DECLARED /* Some non-ANSI use void *, not char *. */
724 memcpy PARAMS ((void *, const void *, size_t)); /* 4.11.2.1 */
728 memcmp PARAMS ((const void *, const void *, size_t)); /* 4.11.4.1 */
731 strchr PARAMS ((const char *, int)); /* 4.11.5.2 */
734 strrchr PARAMS ((const char *, int)); /* 4.11.5.5 */
737 strstr PARAMS ((const char *, const char *)); /* 4.11.5.7 */
740 strtok PARAMS ((char *, const char *)); /* 4.11.5.8 */
742 #ifndef MEM_FNS_DECLARED /* Some non-ANSI use void *, not char *. */
744 memset PARAMS ((void *, int, size_t)); /* 4.11.6.1 */
748 strerror PARAMS ((int)); /* 4.11.6.2 */
750 /* Various possibilities for alloca. */
753 # define alloca __builtin_alloca
756 # include <alloca.h> /* NOTE: Doesn't declare alloca() */
759 extern void *alloca (size_t);
760 # else /* __STDC__ */
761 extern char *alloca ();
766 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these. */
768 #if !defined (BIG_ENDIAN)
769 #define BIG_ENDIAN 4321
772 #if !defined (LITTLE_ENDIAN)
773 #define LITTLE_ENDIAN 1234
776 /* Target-system-dependent parameters for GDB.
778 The standard thing is to include defs.h. However, files that are
779 specific to a particular target can define TM_FILE_OVERRIDE before
780 including defs.h, then can include any particular tm-file they desire. */
782 /* Target machine definition. This will be a symlink to one of the
783 tm-*.h files, built by the `configure' script. */
785 #ifndef TM_FILE_OVERRIDE
789 /* The bit byte-order has to do just with numbering of bits in
790 debugging symbols and such. Conceptually, it's quite separate
791 from byte/word byte order. */
793 #if !defined (BITS_BIG_ENDIAN)
794 #if TARGET_BYTE_ORDER == BIG_ENDIAN
795 #define BITS_BIG_ENDIAN 1
796 #endif /* Big endian. */
798 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
799 #define BITS_BIG_ENDIAN 0
800 #endif /* Little endian. */
801 #endif /* BITS_BIG_ENDIAN not defined. */
803 /* Swap LEN bytes at BUFFER between target and host byte-order. */
804 #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
805 #define SWAP_TARGET_AND_HOST(buffer,len)
806 #else /* Target and host byte order differ. */
807 #define SWAP_TARGET_AND_HOST(buffer,len) \
810 char *p = (char *)(buffer); \
811 char *q = ((char *)(buffer)) + len - 1; \
812 for (; p < q; p++, q--) \
819 #endif /* Target and host byte order differ. */
821 /* On some machines there are bits in addresses which are not really
822 part of the address, but are used by the kernel, the hardware, etc.
823 for special purposes. ADDR_BITS_REMOVE takes out any such bits
824 so we get a "real" address such as one would find in a symbol
825 table. ADDR_BITS_SET sets those bits the way the system wants
827 #if !defined (ADDR_BITS_REMOVE)
828 #define ADDR_BITS_REMOVE(addr) (addr)
829 #define ADDR_BITS_SET(addr) (addr)
830 #endif /* No ADDR_BITS_REMOVE. */
835 push_bytes PARAMS ((CORE_ADDR, char *, int));
837 /* In some modules, we don't have a definition of REGISTER_TYPE yet, so we
838 must avoid prototyping this function for now. FIXME. Should be:
840 push_word PARAMS ((CORE_ADDR, REGISTER_TYPE));
845 /* Some parts of gdb might be considered optional, in the sense that they
846 are not essential for being able to build a working, usable debugger
847 for a specific environment. For example, the maintenance commands
848 are there for the benefit of gdb maintainers. As another example,
849 some environments really don't need gdb's that are able to read N
850 different object file formats. In order to make it possible (but
851 not necessarily recommended) to build "stripped down" versions of
852 gdb, the following defines control selective compilation of those
853 parts of gdb which can be safely left out when necessary. Note that
854 the default is to include everything. */
856 #ifndef MAINTENANCE_CMDS
857 #define MAINTENANCE_CMDS 1
860 #endif /* !defined (DEFS_H) */