/* Definitions for reading symbol files into GDB.
- Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This file is part of GDB.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#if !defined (SYMFILE_H)
#define SYMFILE_H
/* This file requires that you first include "bfd.h". */
+#include "symtab.h"
+
+/* Opaque declarations. */
+struct section_table;
+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, one for global symbols and one for static
+ symbols. Although this adds a level of indirection for storing or
+ accessing the partial symbols, it allows us to throw away duplicate
+ psymbols and set all pointers to the single saved instance. */
+
+struct psymbol_allocation_list
+{
+
+ /* Pointer to beginning of dynamically allocated array of pointers
+ to partial symbols. The array is dynamically expanded as
+ necessary to accommodate more pointers. */
+
+ struct partial_symbol **list;
+
+ /* Pointer to next available slot in which to store a pointer to a
+ partial symbol. */
+
+ struct partial_symbol **next;
+
+ /* Number of allocated pointer slots in current dynamic array (not
+ the number of bytes of storage). The "next" pointer will always
+ point somewhere between list[0] and list[size], and when at
+ list[size] the array will be expanded on the next attempt to
+ store a pointer. */
-struct psymbol_allocation_list {
- struct partial_symbol *list;
- struct partial_symbol *next;
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 (). */
+
+struct section_addr_info
+{
+ /* The number of sections for which address information is
+ available. */
+ size_t num_sections;
+ /* Sections whose names are file format dependent. */
+ struct other_sections
+ {
+ CORE_ADDR addr;
+ char *name;
+ int sectindex;
+ } other[1];
+};
+
/* Structure to keep track of symbol reading functions for various
object file types. */
-struct sym_fns {
-
- /* is the name, or name prefix, of the BFD "target type" that this
- set of functions handles. E.g. "a.out" or "sunOs" or "coff" or "elf". */
+struct sym_fns
+{
- char *sym_name;
+ /* BFD flavour that we handle, or (as a special kludge, see
+ xcoffread.c, (enum bfd_flavour)-1 for xcoff). */
- /* counts how many bytes of sym_name should be checked against the
- BFD target type of the file being read. If an exact match is
- desired, specify the number of characters in sym_name plus 1 for the
- NUL. If a prefix match is desired, specify the number of characters in
- sym_name. */
+ enum bfd_flavour sym_flavour;
- int sym_namelen;
+ /* Initializes anything that is global to the entire symbol table.
+ It is called during symbol_file_add, when we begin debugging an
+ entirely new program. */
- /* Initializes anything that is global to the entire symbol table. It is
- called during symbol_file_add, when we begin debugging an entirely new
- program. */
+ void (*sym_new_init) (struct objfile *);
- void (*sym_new_init) PARAMS ((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. */
- /* 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) (struct objfile *);
- void (*sym_init) PARAMS ((struct objfile *));
+ /* sym_read (objfile, mainline) Reads a symbol file into a psymtab
+ (or possibly a symtab). OBJFILE is the objfile struct for the
+ file we are reading. MAINLINE is 1 if this is the main symbol
+ table being read, and 0 if a secondary symbol file (e.g. shared
+ library or dynamically loaded file) is being read. */
- /* sym_read (objfile, addr, mainline)
- Reads a symbol file into a psymtab (or possibly a symtab).
- OBJFILE is the objfile struct for the file we are reading.
- SECTION_OFFSETS
- are the offset between the file's specified section addresses and
- their true addresses in memory.
- MAINLINE is 1 if this is the
- main symbol table being read, and 0 if a secondary
- symbol file (e.g. shared library or dynamically loaded file)
- is being read. */
+ void (*sym_read) (struct objfile *, int);
- void (*sym_read) PARAMS ((struct objfile *, struct section_offsets *, 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. */
- /* 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.
- The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
- with the higher levels of GDB. It should probably be changed to
- a string, where NULL means the default, and others are parsed in a file
- dependent way. The result of this function is handed in to sym_read. */
+ /* This function produces a file-dependent section_offsets
+ structure, allocated in the objfile's storage, and based on the
+ parameter. The parameter is currently a CORE_ADDR (FIXME!) for
+ backward compatibility with the higher levels of GDB. It should
+ probably be changed to a string, where NULL means the default,
+ and others are parsed in a file dependent way. */
- struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR));
+ 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
- initializer calls add_symtab_fns to add them to the global chain. */
+ /* Finds the next struct sym_fns. They are allocated and
+ initialized in whatever module implements the functions pointed
+ to; an initializer calls add_symtab_fns to add them to the global
+ chain. */
struct sym_fns *next;
};
-extern void
-extend_psymbol_list PARAMS ((struct psymbol_allocation_list *,
- struct objfile *));
+/* The default version of sym_fns.sym_offsets for readers that don't
+ do anything special. */
-/* Add any kind of symbol to a psymbol_allocation_list. */
+extern void default_symfile_offsets (struct objfile *objfile,
+ struct section_addr_info *);
-#ifndef INLINE_ADD_PSYMBOL
-#define INLINE_ADD_PSYMBOL 1
-#endif
-#if !INLINE_ADD_PSYMBOL
+extern void extend_psymbol_list (struct psymbol_allocation_list *,
+ struct objfile *);
-/* Since one arg is a struct, we have to pass in a ptr and deref it (sigh) */
+/* Add any kind of symbol to a psymbol_allocation_list. */
-#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
- add_psymbol_to_list (name, namelength, namespace, class, &list, value, language, objfile)
+/* #include "demangle.h" */
-#define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
- add_psymbol_addr_to_list (name, namelength, namespace, class, &list, value, language, objfile)
+extern const
+struct partial_symbol *add_psymbol_to_list (char *, int, domain_enum,
+ enum address_class,
+ struct psymbol_allocation_list *,
+ long, CORE_ADDR,
+ enum language, struct objfile *);
-#else /* !INLINE_ADD_PSYMBOL */
+extern void add_psymbol_with_dem_name_to_list (char *, int, char *, int,
+ domain_enum,
+ enum address_class,
+ struct psymbol_allocation_list
+ *, long, CORE_ADDR,
+ enum language,
+ struct objfile *);
-#include "demangle.h"
-#define ADD_PSYMBOL_VT_TO_LIST(NAME,NAMELENGTH,NAMESPACE,CLASS,LIST,VALUE,VT,LANGUAGE, OBJFILE) \
- do { \
- register struct partial_symbol *psym; \
- register char *demangled_name; \
- if ((LIST).next >= (LIST).list + (LIST).size) \
- extend_psymbol_list (&(LIST),(OBJFILE)); \
- psym = (LIST).next++; \
- SYMBOL_NAME (psym) = \
- (char *) obstack_alloc (&objfile->psymbol_obstack, \
- (NAMELENGTH) + 1); \
- memcpy (SYMBOL_NAME (psym), (NAME), (NAMELENGTH)); \
- SYMBOL_NAME (psym)[(NAMELENGTH)] = '\0'; \
- SYMBOL_NAMESPACE (psym) = (NAMESPACE); \
- PSYMBOL_CLASS (psym) = (CLASS); \
- VT (psym) = (VALUE); \
- SYMBOL_LANGUAGE (psym) = (LANGUAGE); \
- if ((LANGUAGE) == language_cplus) \
- { \
- demangled_name = \
- cplus_demangle (SYMBOL_NAME (psym), DMGL_PARAMS | DMGL_ANSI); \
- if (demangled_name == NULL) \
- { \
- SYMBOL_DEMANGLED_NAME (psym) = NULL; \
- } \
- else \
- { \
- SYMBOL_DEMANGLED_NAME (psym) = \
- obsavestring (demangled_name, strlen (demangled_name), \
- &objfile->psymbol_obstack); \
- free (demangled_name); \
- } \
- } \
- } while (0);
+extern void init_psymbol_list (struct objfile *, int);
-/* Add a symbol with an integer value to a psymtab. */
+extern void sort_pst_symbols (struct partial_symtab *);
-#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
- ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE, language, objfile)
+extern struct symtab *allocate_symtab (char *, struct objfile *);
-/* Add a symbol with a CORE_ADDR value to a psymtab. */
+extern int free_named_symtabs (char *);
-#define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value, language, objfile)\
- ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE_ADDRESS, language, objfile)
+extern void fill_in_vptr_fieldno (struct type *);
-#endif /* INLINE_ADD_PSYMBOL */
+extern void add_symtab_fns (struct sym_fns *);
- /* Functions */
+extern void syms_from_objfile (struct objfile *,
+ struct section_addr_info *,
+ struct section_offsets *, int, int, int);
-extern void
-sort_pst_symbols PARAMS ((struct partial_symtab *));
+extern void new_symfile_objfile (struct objfile *, int, int);
-extern struct symtab *
-allocate_symtab PARAMS ((char *, struct objfile *));
+extern struct objfile *symbol_file_add (char *, int,
+ struct section_addr_info *, int, int);
-extern int
-free_named_symtabs PARAMS ((char *));
+extern struct objfile *symbol_file_add_from_bfd (bfd *, int,
+ struct section_addr_info *,
+ int, int);
-extern void
-fill_in_vptr_fieldno PARAMS ((struct type *));
+/* Create a new section_addr_info, with room for NUM_SECTIONS. */
-extern void
-add_symtab_fns PARAMS ((struct sym_fns *));
+extern struct section_addr_info *alloc_section_addr_info (size_t
+ num_sections);
-extern void
-init_entry_point_info PARAMS ((struct objfile *));
+/* Return a freshly allocated copy of ADDRS. The section names, if
+ any, are also freshly allocated copies of those in ADDRS. */
+extern struct section_addr_info *(copy_section_addr_info
+ (struct section_addr_info *addrs));
-extern void
-syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int));
+/* Build (allocate and populate) a section_addr_info struct from an
+ existing section table. */
-extern void
-new_symfile_objfile PARAMS ((struct objfile *, int, int));
+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. */
-/* Sorting your symbols for fast lookup or alphabetical printing. */
+extern void free_section_addr_info (struct section_addr_info *);
-extern void
-sort_block_syms PARAMS ((struct block *));
-extern void
-sort_symtab_syms PARAMS ((struct symtab *));
+extern struct partial_symtab *start_psymtab_common (struct objfile *,
+ struct section_offsets *,
+ char *, CORE_ADDR,
+ struct partial_symbol **,
+ struct partial_symbol **);
-extern void
-sort_all_symtab_syms PARAMS ((void));
+/* 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. */
-/* 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 (const char *, int, struct obstack *);
-extern char *
-obsavestring PARAMS ((char *, int, struct obstack *));
+/* Concatenate strings S1, S2 and S3; return the new string. Space is
+ found in the OBSTACKP */
-/* 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 */
+/* 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. */
+
+extern int auto_solib_add;
+
+/* 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. */
+
+extern int auto_solib_limit;
+
/* From symfile.c */
-extern struct partial_symtab *
-allocate_psymtab PARAMS ((char *, struct objfile *));
+extern struct partial_symtab *allocate_psymtab (char *, struct objfile *);
+
+extern void discard_psymtab (struct partial_symtab *);
+
+extern void find_lowest_section (bfd *, asection *, void *);
-/* From dwarfread.c */
+extern bfd *symfile_bfd_open (char *);
-extern void
-dwarf_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int,
- file_ptr, unsigned int, file_ptr, unsigned int));
+extern int get_section_index (struct objfile *, char *);
-/* From dbxread.c */
+/* Utility functions for overlay sections: */
+extern enum overlay_debugging_state
+{
+ ovly_off,
+ ovly_on,
+ ovly_auto
+} overlay_debugging;
+extern int overlay_cache_invalid;
-extern void
-elfstab_build_psymtabs PARAMS ((struct objfile *objfile,
- struct section_offsets *section_offsets,
- int mainline,
- file_ptr staboff, unsigned int stabsize,
- file_ptr stabstroffset, unsigned int stabstrsize));
+/* Return the "mapped" overlay section containing the PC. */
+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 (CORE_ADDR);
+
+/* Return true if the section is an overlay. */
+extern int section_is_overlay (asection *);
+
+/* Return true if the overlay section is currently "mapped". */
+extern int section_is_mapped (asection *);
+
+/* Return true if pc belongs to section's VMA. */
+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 (CORE_ADDR, asection *);
+
+/* Map an address from a section's LMA to its VMA. */
+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 (CORE_ADDR, asection *);
+
+/* Convert an address in an overlay section (force into VMA range). */
+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 dwarf2read.c */
+
+extern int dwarf2_has_info (struct objfile *);
+
+extern void dwarf2_build_psymtabs (struct objfile *, int);
+extern void dwarf2_build_frame_info (struct objfile *);
+
+/* From mdebugread.c */
+
+/* Hack to force structures to exist before use in parameter list. */
+struct ecoff_debug_hack
+{
+ struct ecoff_debug_swap *a;
+ struct ecoff_debug_info *b;
+};
-/* From demangle.c */
+extern void mdebug_build_psymtabs (struct objfile *,
+ const struct ecoff_debug_swap *,
+ struct ecoff_debug_info *);
-extern void
-set_demangling_style PARAMS ((char *));
+extern void elfmdebug_build_psymtabs (struct objfile *,
+ const struct ecoff_debug_swap *,
+ asection *);
-#endif /* !defined(SYMFILE_H) */
+#endif /* !defined(SYMFILE_H) */
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