/* Definitions for reading symbol files into GDB.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GDB.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#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 target_section;
struct objfile;
+struct obj_section;
struct obstack;
struct block;
{
CORE_ADDR addr;
char *name;
+
+ /* SECTINDEX must be valid for associated BFD if ADDR is not zero. */
int sectindex;
} other[1];
};
+
+/* A table listing the load segments in a symfile, and which segment
+ each BFD section belongs to. */
+struct symfile_segment_data
+{
+ /* How many segments are present in this file. If there are
+ two, the text segment is the first one and the data segment
+ is the second one. */
+ int num_segments;
+
+ /* If NUM_SEGMENTS is greater than zero, the original base address
+ of each segment. */
+ CORE_ADDR *segment_bases;
+
+ /* If NUM_SEGMENTS is greater than zero, the memory size of each
+ segment. */
+ CORE_ADDR *segment_sizes;
+
+ /* If NUM_SEGMENTS is greater than zero, this is an array of entries
+ recording which segment contains each BFD section.
+ SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment
+ S, or zero if it is not in any segment. */
+ int *segment_info;
+};
+
+/* The "quick" symbol functions exist so that symbol readers can
+ avoiding an initial read of all the symbols. For example, symbol
+ readers might choose to use the "partial symbol table" utilities,
+ which is one implementation of the quick symbol functions.
+
+ The quick symbol functions are generally opaque: the underlying
+ representation is hidden from the caller.
+
+ In general, these functions should only look at whatever special
+ index the symbol reader creates -- looking through the symbol
+ tables themselves is handled by generic code. If a function is
+ defined as returning a "symbol table", this means that the function
+ should only return a newly-created symbol table; it should not
+ examine pre-existing ones.
+
+ The exact list of functions here was determined in an ad hoc way
+ based on gdb's history. */
+
+struct quick_symbol_functions
+{
+ /* Return true if this objfile has any "partial" symbols
+ available. */
+ int (*has_symbols) (struct objfile *objfile);
+
+ /* Return the symbol table for the "last" file appearing in
+ OBJFILE. */
+ struct symtab *(*find_last_source_symtab) (struct objfile *objfile);
+
+ /* Forget all cached full file names for OBJFILE. */
+ void (*forget_cached_source_info) (struct objfile *objfile);
+
+ /* Look up the symbol table, in OBJFILE, of a source file named
+ NAME. If there is no '/' in the name, a match after a '/' in the
+ symbol table's file name will also work. FULL_PATH is the
+ absolute file name, and REAL_PATH is the same, run through
+ gdb_realpath.
+
+ If no such symbol table can be found, returns 0.
+
+ Otherwise, sets *RESULT to the symbol table and returns 1. This
+ might return 1 and set *RESULT to NULL if the requested file is
+ an include file that does not have a symtab of its own. */
+ int (*lookup_symtab) (struct objfile *objfile,
+ const char *name,
+ const char *full_path,
+ const char *real_path,
+ struct symtab **result);
+
+ /* Check to see if the symbol is defined in a "partial" symbol table
+ of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK,
+ depending on whether we want to search global symbols or static
+ symbols. NAME is the name of the symbol to look for. DOMAIN
+ indicates what sort of symbol to search for.
+
+ Returns the newly-expanded symbol table in which the symbol is
+ defined, or NULL if no such symbol table exists. */
+ struct symtab *(*lookup_symbol) (struct objfile *objfile,
+ int kind, const char *name,
+ domain_enum domain);
+
+ /* Print statistics about any indices loaded for OBJFILE. The
+ statistics should be printed to gdb_stdout. This is used for
+ "maint print statistics". */
+ void (*print_stats) (struct objfile *objfile);
+
+ /* Dump any indices loaded for OBJFILE. The dump should go to
+ gdb_stdout. This is used for "maint print objfiles". */
+ void (*dump) (struct objfile *objfile);
+
+ /* This is called by objfile_relocate to relocate any indices loaded
+ for OBJFILE. */
+ void (*relocate) (struct objfile *objfile,
+ struct section_offsets *new_offsets,
+ struct section_offsets *delta);
+
+ /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that
+ the corresponding symbol tables are loaded. */
+ void (*expand_symtabs_for_function) (struct objfile *objfile,
+ const char *func_name);
+
+ /* Read all symbol tables associated with OBJFILE. */
+ void (*expand_all_symtabs) (struct objfile *objfile);
+
+ /* Read all symbol tables associated with OBJFILE which have the
+ file name FILENAME. */
+ void (*expand_symtabs_with_filename) (struct objfile *objfile,
+ const char *filename);
+
+ /* Return the file name of the file holding the symbol in OBJFILE
+ named NAME. If no such symbol exists in OBJFILE, return NULL. */
+ char *(*find_symbol_file) (struct objfile *objfile, const char *name);
+
+ /* This method is specific to Ada. It walks the partial symbol
+ tables of OBJFILE looking for a name match. WILD_MATCH and
+ IS_NAME_SUFFIX are predicate functions that the implementation
+ may call to check for a match.
+
+ This function is completely ad hoc and new implementations should
+ refer to the psymtab implementation to see what to do. */
+ void (*map_ada_symtabs) (struct objfile *objfile,
+ int (*wild_match) (const char *, int, const char *),
+ int (*is_name_suffix) (const char *),
+ void (*callback) (struct objfile *,
+ struct symtab *, void *),
+ const char *name, int global,
+ domain_enum namespace, int wild,
+ void *data);
+
+ /* Expand all symbol tables in OBJFILE matching some criteria.
+
+ FILE_MATCHER is called for each file in OBJFILE. The file name
+ and the DATA argument are passed to it. If it returns zero, this
+ file is skipped.
+
+ Otherwise, if the file is not skipped, then NAME_MATCHER is
+ called for each symbol defined in the file. The symbol's
+ "natural" name and DATA are passed to NAME_MATCHER.
+
+ If NAME_MATCHER returns zero, then this symbol is skipped.
+
+ Otherwise, if this symbol is not skipped, and it matches KIND,
+ then this symbol's symbol table is expanded.
+
+ DATA is user data that is passed unmodified to the callback
+ functions. */
+ void (*expand_symtabs_matching) (struct objfile *objfile,
+ int (*file_matcher) (const char *, void *),
+ int (*name_matcher) (const char *, void *),
+ domain_enum kind,
+ void *data);
+
+ /* Return the symbol table from OBJFILE that contains PC and
+ SECTION. Return NULL if there is no such symbol table. This
+ should return the symbol table that contains a symbol whose
+ address exactly matches PC, or, if there is no exact match, the
+ symbol table that contains a symbol whose address is closest to
+ PC. */
+ struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile,
+ struct minimal_symbol *msymbol,
+ CORE_ADDR pc,
+ struct obj_section *section,
+ int warn_if_readin);
+
+ /* Call a callback for every symbol defined in OBJFILE. FUN is the
+ callback. It is passed the symbol's natural name, and the DATA
+ passed to this function. */
+ void (*map_symbol_names) (struct objfile *objfile,
+ void (*fun) (const char *, void *),
+ void *data);
+
+ /* Call a callback for every file defined in OBJFILE. FUN is the
+ callback. It is passed the file's name, the file's full name,
+ and the DATA passed to this function. */
+ void (*map_symbol_filenames) (struct objfile *objfile,
+ void (*fun) (const char *, const char *,
+ void *),
+ void *data);
+};
+
/* Structure to keep track of symbol reading functions for various
object file types. */
void (*sym_init) (struct objfile *);
- /* sym_read (objfile, mainline) Reads a symbol file into a psymtab
+ /* sym_read (objfile, symfile_flags) 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. */
+ file we are reading. SYMFILE_FLAGS are the flags passed to
+ symbol_file_add & co. */
void (*sym_read) (struct objfile *, int);
void (*sym_offsets) (struct objfile *, struct section_addr_info *);
+ /* This function produces a format-independent description of
+ the segments of ABFD. Each segment is a unit of the file
+ which may be relocated independently. */
+
+ struct symfile_segment_data *(*sym_segments) (bfd *abfd);
+
+ /* This function should read the linetable from the objfile when
+ the line table cannot be read while processing the debugging
+ information. */
+
+ void (*sym_read_linetable) (void);
+
+ /* Relocate the contents of a debug section SECTP. The
+ contents are stored in BUF if it is non-NULL, or returned in a
+ malloc'd buffer otherwise. */
+
+ bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf);
+
+ /* The "quick" (aka partial) symbol functions for this symbol
+ reader. */
+ const struct quick_symbol_functions *qf;
+
/* 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
};
+extern struct section_addr_info *
+ build_section_addr_info_from_objfile (const struct objfile *objfile);
+
+extern void relative_addr_info_to_section_offsets
+ (struct section_offsets *section_offsets, int num_sections,
+ struct section_addr_info *addrs);
+
+extern void addr_info_make_relative (struct section_addr_info *addrs,
+ bfd *abfd);
+
/* The default version of sym_fns.sym_offsets for readers that don't
do anything special. */
extern void default_symfile_offsets (struct objfile *objfile,
struct section_addr_info *);
+/* The default version of sym_fns.sym_segments for readers that don't
+ do anything special. */
+
+extern struct symfile_segment_data *default_symfile_segments (bfd *abfd);
+
+/* The default version of sym_fns.sym_relocate for readers that don't
+ do anything special. */
+
+extern bfd_byte *default_symfile_relocate (struct objfile *objfile,
+ asection *sectp, bfd_byte *buf);
extern void extend_psymbol_list (struct psymbol_allocation_list *,
struct objfile *);
/* #include "demangle.h" */
extern const
-struct partial_symbol *add_psymbol_to_list (char *, int, domain_enum,
+struct partial_symbol *add_psymbol_to_list (char *, int, int, domain_enum,
enum address_class,
struct psymbol_allocation_list *,
long, CORE_ADDR,
enum language, struct objfile *);
-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 *);
-
-
extern void init_psymbol_list (struct objfile *, int);
-extern void sort_pst_symbols (struct partial_symtab *);
-
extern struct symtab *allocate_symtab (char *, struct objfile *);
-extern int free_named_symtabs (char *);
+extern void add_symtab_fns (struct sym_fns *);
-extern void fill_in_vptr_fieldno (struct type *);
+/* This enum encodes bit-flags passed as ADD_FLAGS parameter to
+ syms_from_objfile, symbol_file_add, etc. */
-extern void add_symtab_fns (struct sym_fns *);
+enum symfile_add_flags
+ {
+ /* Be chatty about what you are doing. */
+ SYMFILE_VERBOSE = 1 << 1,
+
+ /* This is the main symbol file (as opposed to symbol file for dynamically
+ loaded code). */
+ SYMFILE_MAINLINE = 1 << 2,
+
+ /* Do not call breakpoint_re_set when adding this symbol file. */
+ SYMFILE_DEFER_BP_RESET = 1 << 3
+ };
extern void syms_from_objfile (struct objfile *,
struct section_addr_info *,
- struct section_offsets *, int, int, int);
+ struct section_offsets *, int, int);
-extern void new_symfile_objfile (struct objfile *, int, int);
+extern void new_symfile_objfile (struct objfile *, int);
extern struct objfile *symbol_file_add (char *, int,
- struct section_addr_info *, int, int);
+ struct section_addr_info *, int);
extern struct objfile *symbol_file_add_from_bfd (bfd *, int,
struct section_addr_info *,
- int, int);
+ int);
+
+extern void symbol_file_add_separate (bfd *, int, struct objfile *);
+
+extern char *find_separate_debug_file_by_debuglink (struct objfile *);
/* Create a new section_addr_info, with room for NUM_SECTIONS. */
extern struct section_addr_info *alloc_section_addr_info (size_t
num_sections);
-/* 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));
-
/* Build (allocate and populate) a section_addr_info struct from an
existing section table. */
extern struct section_addr_info
- *build_section_addr_info_from_section_table (const struct section_table
+ *build_section_addr_info_from_section_table (const struct target_section
*start,
- const struct section_table
+ const struct target_section
*end);
/* Free all memory allocated by
extern struct partial_symtab *start_psymtab_common (struct objfile *,
struct section_offsets *,
- char *, CORE_ADDR,
+ const char *, CORE_ADDR,
struct partial_symbol **,
struct partial_symbol **);
/* From symfile.c */
-extern struct partial_symtab *allocate_psymtab (char *, struct objfile *);
+extern void set_initial_language (void);
+
+extern struct partial_symtab *allocate_psymtab (const char *,
+ struct objfile *);
extern void discard_psymtab (struct partial_symtab *);
extern bfd *symfile_bfd_open (char *);
+extern bfd *bfd_open_maybe_remote (const char *);
+
extern int get_section_index (struct objfile *, char *);
/* Utility functions for overlay sections: */
extern int overlay_cache_invalid;
/* Return the "mapped" overlay section containing the PC. */
-extern asection *find_pc_mapped_section (CORE_ADDR);
+extern struct obj_section *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);
+extern struct obj_section *find_pc_overlay (CORE_ADDR);
/* Return true if the section is an overlay. */
-extern int section_is_overlay (asection *);
+extern int section_is_overlay (struct obj_section *);
/* Return true if the overlay section is currently "mapped". */
-extern int section_is_mapped (asection *);
+extern int section_is_mapped (struct obj_section *);
/* Return true if pc belongs to section's VMA. */
-extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, asection *);
+extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *);
/* Return true if pc belongs to section's LMA. */
-extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, asection *);
+extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *);
/* Map an address from a section's LMA to its VMA. */
-extern CORE_ADDR overlay_mapped_address (CORE_ADDR, asection *);
+extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *);
/* Map an address from a section's VMA to its LMA. */
-extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, asection *);
+extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *);
/* Convert an address in an overlay section (force into VMA range). */
-extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *);
+extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *);
/* 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);
+/* Default overlay update function. */
+extern void simple_overlay_update (struct obj_section *);
-/* From dwarfread.c */
+extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *,
+ bfd_byte *);
-extern void dwarf_build_psymtabs (struct objfile *, int, file_ptr,
- unsigned int, file_ptr, unsigned int);
+extern int symfile_map_offsets_to_segments (bfd *,
+ struct symfile_segment_data *,
+ struct section_offsets *,
+ int, const CORE_ADDR *);
+struct symfile_segment_data *get_symfile_segment_data (bfd *abfd);
+void free_symfile_segment_data (struct symfile_segment_data *data);
+
+extern struct cleanup *increment_reading_symtab (void);
/* From dwarf2read.c */
extern int dwarf2_has_info (struct objfile *);
-extern void dwarf2_build_psymtabs (struct objfile *, int);
+extern void dwarf2_build_psymtabs (struct objfile *);
extern void dwarf2_build_frame_info (struct objfile *);
+void dwarf2_free_objfile (struct objfile *);
+
/* From mdebugread.c */
/* Hack to force structures to exist before use in parameter list. */
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