/* Definitions for reading symbol files into GDB.
- Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GDB.
/* This file requires that you first include "bfd.h". */
+/* Opaque declarations. */
+struct objfile;
+struct obstack;
+struct block;
+
/* Partial symbols are stored in the psymbol_cache and pointers to them
are kept in a dynamically grown array that is obtained from malloc and
grown as necessary via realloc. Each objfile typically has two of these,
int size;
};
+/* Define an array of addresses to accommodate non-contiguous dynamic
+ loading of modules. This is for use when entering commands, so we
+ can keep track of the section names until we read the file and
+ can map them to bfd sections. This structure is also used by
+ solib.c to communicate the section addresses in shared objects to
+ symbol_file_add (). */
+
+#define MAX_SECTIONS 64
+struct section_addr_info
+{
+ /* Sections whose names are file format dependent. */
+ struct other_sections
+ {
+ CORE_ADDR addr;
+ char *name;
+ int sectindex;
+ } other[MAX_SECTIONS];
+};
+
/* Structure to keep track of symbol reading functions for various
object file types. */
called during symbol_file_add, when we begin debugging an entirely new
program. */
- void (*sym_new_init) PARAMS ((struct objfile *));
+ void (*sym_new_init) (struct objfile *);
/* Reads any initial information from a symbol file, and initializes the
struct sym_fns SF in preparation for sym_read(). It is called every
time we read a symbol file for any reason. */
- void (*sym_init) PARAMS ((struct objfile *));
+ void (*sym_init) (struct objfile *);
/* sym_read (objfile, mainline)
Reads a symbol file into a psymtab (or possibly a symtab).
symbol file (e.g. shared library or dynamically loaded file)
is being read. */
- void (*sym_read) PARAMS ((struct objfile *, int));
+ void (*sym_read) (struct objfile *, int);
/* Called when we are finished with an objfile. Should do all cleanup
that is specific to the object file format for the particular objfile. */
- void (*sym_finish) PARAMS ((struct objfile *));
+ void (*sym_finish) (struct objfile *);
/* This function produces a file-dependent section_offsets structure,
allocated in the objfile's storage, and based on the parameter.
a string, where NULL means the default, and others are parsed in a file
dependent way. */
- void (*sym_offsets) PARAMS ((struct objfile *, struct section_addr_info *));
+ void (*sym_offsets) (struct objfile *, struct section_addr_info *);
/* Finds the next struct sym_fns. They are allocated and initialized
in whatever module implements the functions pointed to; an
/* The default version of sym_fns.sym_offsets for readers that don't
do anything special. */
-extern void
-default_symfile_offsets PARAMS ((struct objfile * objfile, struct section_addr_info *));
+extern void default_symfile_offsets (struct objfile *objfile,
+ struct section_addr_info *);
-extern void
-extend_psymbol_list PARAMS ((struct psymbol_allocation_list *,
- struct objfile *));
+extern void extend_psymbol_list (struct psymbol_allocation_list *,
+ struct objfile *);
/* Add any kind of symbol to a psymbol_allocation_list. */
/* #include "demangle.h" */
extern void
-add_psymbol_to_list PARAMS ((char *, int, namespace_enum, enum address_class,
- struct psymbol_allocation_list *, long, CORE_ADDR,
- enum language, struct objfile *));
+add_psymbol_to_list (char *, int, namespace_enum, enum address_class,
+ struct psymbol_allocation_list *, long, CORE_ADDR,
+ enum language, struct objfile *);
extern void
-add_psymbol_with_dem_name_to_list PARAMS ((char *, int, char *, int, namespace_enum,
- enum address_class,
- struct psymbol_allocation_list *,
- long, CORE_ADDR,
- enum language, struct objfile *));
+add_psymbol_with_dem_name_to_list (char *, int, char *, int, namespace_enum,
+ enum address_class,
+ struct psymbol_allocation_list *,
+ long, CORE_ADDR,
+ enum language, struct objfile *);
-extern void init_psymbol_list PARAMS ((struct objfile *, int));
+extern void init_psymbol_list (struct objfile *, int);
-extern void
-sort_pst_symbols PARAMS ((struct partial_symtab *));
+extern void sort_pst_symbols (struct partial_symtab *);
-extern struct symtab *
- allocate_symtab PARAMS ((char *, struct objfile *));
+extern struct symtab *allocate_symtab (char *, struct objfile *);
-extern int
-free_named_symtabs PARAMS ((char *));
+extern int free_named_symtabs (char *);
-extern void
-fill_in_vptr_fieldno PARAMS ((struct type *));
+extern void fill_in_vptr_fieldno (struct type *);
-extern void
-add_symtab_fns PARAMS ((struct sym_fns *));
+extern void add_symtab_fns (struct sym_fns *);
-extern void
-init_entry_point_info PARAMS ((struct objfile *));
+extern void init_entry_point_info (struct objfile *);
-extern void
-syms_from_objfile PARAMS ((struct objfile *, struct section_addr_info *, int, int));
+extern void syms_from_objfile (struct objfile *,
+ struct section_addr_info *,
+ struct section_offsets *, int,
+ int, int);
-extern void
-new_symfile_objfile PARAMS ((struct objfile *, int, int));
+extern void new_symfile_objfile (struct objfile *, int, int);
+
+extern struct objfile *symbol_file_add (char *, int,
+ struct section_addr_info *, int, int);
+
+/* Build (allocate and populate) a section_addr_info struct from
+ an existing section table. */
+
+struct section_table;
+extern struct section_addr_info *
+build_section_addr_info_from_section_table (const struct section_table *start,
+ const struct section_table *end);
-extern struct partial_symtab *
- start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *,
- char *, CORE_ADDR,
- struct partial_symbol **,
- struct partial_symbol **));
+/* Free all memory allocated by build_section_addr_info_from_section_table. */
+
+extern void free_section_addr_info (struct section_addr_info *);
+
+
+extern struct partial_symtab *start_psymtab_common (struct objfile *,
+ struct section_offsets *,
+ char *, CORE_ADDR,
+ struct partial_symbol **,
+ struct partial_symbol **);
/* Sorting your symbols for fast lookup or alphabetical printing. */
-extern void
-sort_block_syms PARAMS ((struct block *));
+extern void sort_block_syms (struct block *);
-extern void
-sort_symtab_syms PARAMS ((struct symtab *));
+extern void sort_symtab_syms (struct symtab *);
/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
(and add a null character at the end in the copy).
Returns the address of the copy. */
-extern char *
- obsavestring PARAMS ((char *, int, struct obstack *));
+extern char *obsavestring (const char *, int, struct obstack *);
/* Concatenate strings S1, S2 and S3; return the new string.
Space is found in the symbol_obstack. */
-extern char *
- obconcat PARAMS ((struct obstack * obstackp, const char *, const char *,
- const char *));
+extern char *obconcat (struct obstack *obstackp, const char *, const char *,
+ const char *);
/* Variables */
-/* whether to auto load solibs at startup time: 0/1.
+/* If non-zero, shared library symbols will be added automatically
+ when the inferior is created, new libraries are loaded, or when
+ attaching to the inferior. This is almost always what users will
+ want to have happen; but for very large programs, the startup time
+ will be excessive, and so if this is a problem, the user can clear
+ this flag and then add the shared library symbols as needed. Note
+ that there is a potential for confusion, since if the shared
+ library symbols are not loaded, commands like "info fun" will *not*
+ report all the functions that are actually present. */
- On all platforms, 0 means "don't auto load".
+extern int auto_solib_add;
- On HP-UX, > 0 means a threshhold, in megabytes, of symbol table which will
- be auto loaded. When the cumulative size of solib symbol table exceeds
- this threshhold, solibs' symbol tables will not be loaded.
+/* For systems that support it, a threshold size in megabytes. If
+ automatically adding a new library's symbol table to those already
+ known to the debugger would cause the total shared library symbol
+ size to exceed this threshhold, then the shlib's symbols are not
+ added. The threshold is ignored if the user explicitly asks for a
+ shlib to be added, such as when using the "sharedlibrary"
+ command. */
- On other platforms, > 0 means, "always auto load".
- */
-
-extern int auto_solib_add;
+extern int auto_solib_limit;
/* From symfile.c */
-extern CORE_ADDR
- entry_point_address PARAMS ((void));
+extern CORE_ADDR entry_point_address (void);
-extern struct partial_symtab *
- allocate_psymtab PARAMS ((char *, struct objfile *));
+extern struct partial_symtab *allocate_psymtab (char *, struct objfile *);
-extern void
-discard_psymtab PARAMS ((struct partial_symtab *));
+extern void discard_psymtab (struct partial_symtab *);
+
+extern void find_lowest_section (bfd *, asection *, void *);
-extern void find_lowest_section PARAMS ((bfd *, asection *, PTR));
+extern bfd *symfile_bfd_open (char *);
-extern bfd *symfile_bfd_open PARAMS ((char *));
+extern int get_section_index (struct objfile *, char *);
/* Utility functions for overlay sections: */
-extern int overlay_debugging;
+extern enum overlay_debugging_state {
+ ovly_off,
+ ovly_on,
+ ovly_auto
+} overlay_debugging;
extern int overlay_cache_invalid;
/* return the "mapped" overlay section containing the PC */
-extern asection *
- find_pc_mapped_section PARAMS ((CORE_ADDR));
+extern asection *find_pc_mapped_section (CORE_ADDR);
/* return any overlay section containing the PC (even in its LMA region) */
-extern asection *
- find_pc_overlay PARAMS ((CORE_ADDR));
+extern asection *find_pc_overlay (CORE_ADDR);
/* return true if the section is an overlay */
-extern int
-section_is_overlay PARAMS ((asection *));
+extern int section_is_overlay (asection *);
/* return true if the overlay section is currently "mapped" */
-extern int
-section_is_mapped PARAMS ((asection *));
+extern int section_is_mapped (asection *);
/* return true if pc belongs to section's VMA */
-extern CORE_ADDR
- pc_in_mapped_range PARAMS ((CORE_ADDR, asection *));
+extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, asection *);
/* return true if pc belongs to section's LMA */
-extern CORE_ADDR
- pc_in_unmapped_range PARAMS ((CORE_ADDR, asection *));
+extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, asection *);
/* map an address from a section's LMA to its VMA */
-extern CORE_ADDR
- overlay_mapped_address PARAMS ((CORE_ADDR, asection *));
+extern CORE_ADDR overlay_mapped_address (CORE_ADDR, asection *);
/* map an address from a section's VMA to its LMA */
-extern CORE_ADDR
- overlay_unmapped_address PARAMS ((CORE_ADDR, asection *));
+extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, asection *);
/* convert an address in an overlay section (force into VMA range) */
-extern CORE_ADDR
- symbol_overlayed_address PARAMS ((CORE_ADDR, asection *));
+extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *);
+
+/* Load symbols from a file. */
+extern void symbol_file_add_main (char *args, int from_tty);
+
+/* Clear GDB symbol tables. */
+extern void symbol_file_clear (int from_tty);
+
+extern bfd_byte *symfile_relocate_debug_section (bfd *abfd, asection *sectp,
+ bfd_byte *buf);
/* From dwarfread.c */
extern void
-dwarf_build_psymtabs PARAMS ((struct objfile *, int, file_ptr, unsigned int,
- file_ptr, unsigned int));
+dwarf_build_psymtabs (struct objfile *, int, file_ptr, unsigned int,
+ file_ptr, unsigned int);
/* From dwarf2read.c */
-extern int dwarf2_has_info PARAMS ((bfd * abfd));
+extern int dwarf2_has_info (bfd * abfd);
-extern void dwarf2_build_psymtabs PARAMS ((struct objfile *, int));
+extern void dwarf2_build_psymtabs (struct objfile *, int);
+extern void dwarf2_build_frame_info (struct objfile *);
/* From mdebugread.c */
struct ecoff_debug_info *b;
};
extern void
-mdebug_build_psymtabs PARAMS ((struct objfile *,
- const struct ecoff_debug_swap *,
- struct ecoff_debug_info *));
+mdebug_build_psymtabs (struct objfile *,
+ const struct ecoff_debug_swap *,
+ struct ecoff_debug_info *);
extern void
-elfmdebug_build_psymtabs PARAMS ((struct objfile *,
- const struct ecoff_debug_swap *,
- asection *));
+elfmdebug_build_psymtabs (struct objfile *,
+ const struct ecoff_debug_swap *, asection *);
#endif /* !defined(SYMFILE_H) */
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