/* Definitions for reading symbol files into GDB.
- Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996
- Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright (C) 1990-2013 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 3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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, 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"
+#include "probe.h"
+
+/* Opaque declarations. */
+struct target_section;
+struct objfile;
+struct obj_section;
+struct obstack;
+struct block;
+struct probe;
+struct value;
+struct frame_info;
+struct agent_expr;
+struct axs_value;
+
+/* Comparison function for symbol look ups. */
+
+typedef int (symbol_compare_ftype) (const char *string1,
+ const char *string2);
+
+/* 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
+{
-/* 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. */
+ /* 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. */
+ /* 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. */
+ /* 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. */
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;
+
+ /* SECTINDEX must be valid for associated BFD or set to -1. */
+ 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;
+};
+
+/* Callback for quick_symbol_functions->map_symbol_filenames. */
+
+typedef void (symbol_filename_ftype) (const char *filename,
+ const char *fullname, void *data);
+
+/* 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);
+
+ /* Expand and iterate over each "partial" symbol table in OBJFILE
+ where the source file is named NAME.
+
+ If NAME is not absolute, a match after a '/' in the symbol table's
+ file name will also work, REAL_PATH is NULL then. If NAME is
+ absolute then REAL_PATH is non-NULL absolute file name as resolved
+ via gdb_realpath from NAME.
+
+ If a match is found, the "partial" symbol table is expanded.
+ Then, this calls iterate_over_some_symtabs (or equivalent) over
+ all newly-created symbol tables, passing CALLBACK and DATA to it.
+ The result of this call is returned. */
+ int (*map_symtabs_matching_filename) (struct objfile *objfile,
+ const char *name,
+ const char *real_path,
+ int (*callback) (struct symtab *,
+ void *),
+ void *data);
+
+ /* 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. If OBJFILE
+ contains !TYPE_OPAQUE symbol prefer its symtab. If it contains
+ only TYPE_OPAQUE symbol(s), return at least that symtab. */
+ 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,
+ const struct section_offsets *new_offsets,
+ const 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
+ symtab_to_fullname equal to FULLNAME.
+ This is for the purposes of examining code only, e.g., expand_line_sal.
+ The routine may ignore debug info that is known to not be useful with
+ code, e.g., DW_TAG_type_unit for dwarf debug info. */
+ void (*expand_symtabs_with_fullname) (struct objfile *objfile,
+ const char *fullname);
+
+ /* Return the file name of the file holding the global symbol in OBJFILE
+ named NAME. If no such symbol exists in OBJFILE, return NULL.
+ Only file extension of returned filename is recognized. */
+ const char *(*find_symbol_file) (struct objfile *objfile, const char *name);
+
+ /* Find global or static symbols in all tables that are in NAMESPACE
+ and for which MATCH (symbol name, NAME) == 0, passing each to
+ CALLBACK, reading in partial symbol tables as needed. Look
+ through global symbols if GLOBAL and otherwise static symbols.
+ Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol
+ found. After each block is processed, passes NULL to CALLBACK.
+ MATCH must be weaker than strcmp_iw_ordered in the sense that
+ strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE,
+ if non-null, must be an ordering relation compatible with
+ strcmp_iw_ordered in the sense that
+ strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0
+ and
+ strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0
+ (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0).
+ CALLBACK returns 0 to indicate that the scan should continue, or
+ non-zero to indicate that the scan should be terminated. */
+
+ void (*map_matching_symbols) (const char *name, domain_enum namespace,
+ struct objfile *, int global,
+ int (*callback) (struct block *,
+ struct symbol *, void *),
+ void *data,
+ symbol_compare_ftype *match,
+ symbol_compare_ftype *ordered_compare);
+
+ /* 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. If FILE_MATCHER is NULL such file is not skipped.
+ If BASENAMES is non-zero the function should consider only base name of
+ DATA (passed file name is already only the lbasename part).
+
+ Otherwise, if KIND does not match this symbol is skipped.
+
+ If even KIND matches, then NAME_MATCHER is called for each symbol
+ defined in the file. The symbol "search" name and DATA are passed
+ to NAME_MATCHER.
+
+ If NAME_MATCHER returns zero, then this symbol is skipped.
+
+ Otherwise, 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 basenames),
+ int (*name_matcher) (const char *, void *),
+ enum search_domain 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 file defined in OBJFILE whose symtab is
+ not already read in. FUN is the callback. It is passed the file's
+ FILENAME, the file's FULLNAME (if need_fullname is non-zero), and
+ the DATA passed to this function. */
+ void (*map_symbol_filenames) (struct objfile *objfile,
+ symbol_filename_ftype *fun, void *data,
+ int need_fullname);
+};
+
+/* Structure of functions used for probe support. If one of these functions
+ is provided, all must be. */
+
+struct sym_probe_fns
+{
+ /* If non-NULL, return an array of probe objects.
+
+ The returned value does not have to be freed and it has lifetime of the
+ OBJFILE. */
+ VEC (probe_p) *(*sym_get_probes) (struct objfile *);
+
+ /* Return the number of arguments available to PROBE. PROBE will
+ have come from a call to this objfile's sym_get_probes method.
+ If you provide an implementation of sym_get_probes, you must
+ implement this method as well. */
+ unsigned (*sym_get_probe_argument_count) (struct probe *probe);
+
+ /* Evaluate the Nth argument available to PROBE. PROBE will have
+ come from a call to this objfile's sym_get_probes method. N will
+ be between 0 and the number of arguments available to this probe.
+ FRAME is the frame in which the evaluation is done; the frame's
+ PC will match the address of the probe. If you provide an
+ implementation of sym_get_probes, you must implement this method
+ as well. */
+ struct value *(*sym_evaluate_probe_argument) (struct probe *probe,
+ unsigned n);
+
+ /* Compile the Nth probe argument to an agent expression. PROBE
+ will have come from a call to this objfile's sym_get_probes
+ method. N will be between 0 and the number of arguments
+ available to this probe. EXPR and VALUE are the agent expression
+ that is being updated. */
+ void (*sym_compile_to_ax) (struct probe *probe,
+ struct agent_expr *expr,
+ struct axs_value *value,
+ unsigned n);
+
+ /* Relocate the probe section of OBJFILE. */
+ void (*sym_relocate_probe) (struct objfile *objfile,
+ const struct section_offsets *new_offsets,
+ const struct section_offsets *delta);
+};
+
/* Structure to keep track of symbol reading functions for various
object file types. */
-struct sym_fns {
+struct sym_fns
+{
- /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
- (enum bfd_flavour)-1 for xcoff). */
+ /* BFD flavour that we handle, or (as a special kludge, see
+ xcoffread.c, (enum bfd_flavour)-1 for xcoff). */
enum bfd_flavour sym_flavour;
- /* 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) 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. */
+ /* 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, 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. */
+ /* 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. SYMFILE_FLAGS are the flags passed to
+ symbol_file_add & co. */
- void (*sym_read) PARAMS ((struct objfile *, struct section_offsets *, 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 *));
+ /* Read the partial symbols for an objfile. This may be NULL, in which case
+ gdb has to check other ways if this objfile has any symbols. This may
+ only be non-NULL if the objfile actually does have debuginfo available.
+ */
- /* 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. */
+ void (*sym_read_psymbols) (struct objfile *);
- struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR));
+ /* Called when we are finished with an objfile. Should do all
+ cleanup that is specific to the object file format for the
+ particular objfile. */
- /* 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. */
+ void (*sym_finish) (struct objfile *);
- struct sym_fns *next;
+ /* 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. */
-};
+ void (*sym_offsets) (struct objfile *, const struct section_addr_info *);
-/* The default version of sym_fns.sym_offsets for readers that don't
- do anything special. */
+ /* 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);
-extern struct section_offsets *
-default_symfile_offsets PARAMS ((struct objfile *objfile, CORE_ADDR addr));
+ /* 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);
-extern void
-extend_psymbol_list PARAMS ((struct psymbol_allocation_list *,
- struct objfile *));
+ /* If non-NULL, this objfile has probe support, and all the probe
+ functions referred to here will be non-NULL. */
+ const struct sym_probe_fns *sym_probe_fns;
-/* Add any kind of symbol to a psymbol_allocation_list. */
+ /* The "quick" (aka partial) symbol functions for this symbol
+ reader. */
+ const struct quick_symbol_functions *qf;
+};
+
+extern struct section_addr_info *
+ build_section_addr_info_from_objfile (const struct objfile *objfile);
-/* #include "demangle.h" */
+extern void relative_addr_info_to_section_offsets
+ (struct section_offsets *section_offsets, int num_sections,
+ const struct section_addr_info *addrs);
-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 *));
+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
-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 *));
+extern void default_symfile_offsets (struct objfile *objfile,
+ const struct section_addr_info *);
+/* The default version of sym_fns.sym_segments for readers that don't
+ do anything special. */
-extern void init_psymbol_list PARAMS ((struct objfile *, int));
+extern struct symfile_segment_data *default_symfile_segments (bfd *abfd);
-extern void
-sort_pst_symbols PARAMS ((struct partial_symtab *));
+/* The default version of sym_fns.sym_relocate for readers that don't
+ do anything special. */
-extern struct symtab *
-allocate_symtab PARAMS ((char *, struct objfile *));
+extern bfd_byte *default_symfile_relocate (struct objfile *objfile,
+ asection *sectp, bfd_byte *buf);
-extern int
-free_named_symtabs PARAMS ((char *));
+extern struct symtab *allocate_symtab (const char *, struct objfile *)
+ ATTRIBUTE_NONNULL (1);
-extern void
-fill_in_vptr_fieldno PARAMS ((struct type *));
+extern void add_symtab_fns (const struct sym_fns *);
-extern void
-add_symtab_fns PARAMS ((struct sym_fns *));
+/* This enum encodes bit-flags passed as ADD_FLAGS parameter to
+ symbol_file_add, etc. */
-extern void
-init_entry_point_info PARAMS ((struct objfile *));
+enum symfile_add_flags
+ {
+ /* Be chatty about what you are doing. */
+ SYMFILE_VERBOSE = 1 << 1,
-extern void
-syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int));
+ /* This is the main symbol file (as opposed to symbol file for dynamically
+ loaded code). */
+ SYMFILE_MAINLINE = 1 << 2,
-extern void
-new_symfile_objfile PARAMS ((struct objfile *, int, int));
+ /* Do not call breakpoint_re_set when adding this symbol file. */
+ SYMFILE_DEFER_BP_RESET = 1 << 3,
-extern struct partial_symtab *
-start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *,
- char *, CORE_ADDR,
- struct partial_symbol **,
- struct partial_symbol **));
+ /* Do not immediately read symbols for this file. By default,
+ symbols are read when the objfile is created. */
+ SYMFILE_NO_READ = 1 << 4
+ };
-/* Sorting your symbols for fast lookup or alphabetical printing. */
+extern void new_symfile_objfile (struct objfile *, int);
-extern void
-sort_block_syms PARAMS ((struct block *));
+extern struct objfile *symbol_file_add (char *, int,
+ struct section_addr_info *, int);
-extern void
-sort_symtab_syms PARAMS ((struct symtab *));
+extern struct objfile *symbol_file_add_from_bfd (bfd *, int,
+ struct section_addr_info *,
+ int, struct objfile *parent);
-/* 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 void symbol_file_add_separate (bfd *, int, struct objfile *);
-extern char *
-obsavestring PARAMS ((char *, int, struct obstack *));
+extern char *find_separate_debug_file_by_debuglink (struct objfile *);
-/* Concatenate strings S1, S2 and S3; return the new string.
- Space is found in the symbol_obstack. */
+/* Create a new section_addr_info, with room for NUM_SECTIONS. */
-extern char *
-obconcat PARAMS ((struct obstack *obstackp, const char *, const char *,
- const char *));
+extern struct section_addr_info *alloc_section_addr_info (size_t
+ num_sections);
- /* Variables */
+/* Build (allocate and populate) a section_addr_info struct from an
+ existing section table. */
-/* whether to auto load solibs at startup time: 0/1.
+extern struct section_addr_info
+ *build_section_addr_info_from_section_table (const struct target_section
+ *start,
+ const struct target_section
+ *end);
- On all platforms, 0 means "don't auto load".
+/* Free all memory allocated by
+ build_section_addr_info_from_section_table. */
- 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.
+extern void free_section_addr_info (struct section_addr_info *);
- On other platforms, > 0 means, "always auto load".
- */
+
+ /* 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;
/* From symfile.c */
-extern CORE_ADDR
-entry_point_address PARAMS ((void));
-
-extern struct partial_symtab *
-allocate_psymtab PARAMS ((char *, struct objfile *));
+extern void set_initial_language (void);
-extern void
-discard_psymtab PARAMS ((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 bfd *gdb_bfd_open_maybe_remote (const char *);
-/* Remote targets may wish to use this as their load function. */
-extern void generic_load PARAMS ((char *name, int from_tty));
+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));
+/* Return the "mapped" overlay section containing the PC. */
+extern struct obj_section *find_pc_mapped_section (CORE_ADDR);
+
+/* Return any overlay section containing the PC (even in its LMA
+ region). */
+extern struct obj_section *find_pc_overlay (CORE_ADDR);
+
+/* Return true if the section is an overlay. */
+extern int section_is_overlay (struct obj_section *);
+
+/* Return true if the overlay section is currently "mapped". */
+extern int section_is_mapped (struct obj_section *);
-/* return any overlay section containing the PC (even in its LMA region) */
-extern asection *
-find_pc_overlay PARAMS ((CORE_ADDR));
+/* Return true if pc belongs to section's VMA. */
+extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *);
-/* return true if the section is an overlay */
-extern int
-section_is_overlay PARAMS ((asection *));
+/* Return true if pc belongs to section's LMA. */
+extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *);
-/* return true if the overlay section is currently "mapped" */
-extern int
-section_is_mapped PARAMS ((asection *));
+/* Map an address from a section's LMA to its VMA. */
+extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *);
-/* return true if pc belongs to section's VMA */
-extern CORE_ADDR
-pc_in_mapped_range PARAMS ((CORE_ADDR, asection *));
+/* Map an address from a section's VMA to its LMA. */
+extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *);
-/* return true if pc belongs to section's LMA */
-extern CORE_ADDR
-pc_in_unmapped_range PARAMS ((CORE_ADDR, asection *));
+/* Convert an address in an overlay section (force into VMA range). */
+extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *);
-/* map an address from a section's LMA to its VMA */
-extern CORE_ADDR
-overlay_mapped_address PARAMS ((CORE_ADDR, asection *));
+/* Load symbols from a file. */
+extern void symbol_file_add_main (char *args, int from_tty);
-/* map an address from a section's VMA to its LMA */
-extern CORE_ADDR
-overlay_unmapped_address PARAMS ((CORE_ADDR, asection *));
+/* Clear GDB symbol tables. */
+extern void symbol_file_clear (int from_tty);
-/* convert an address in an overlay section (force into VMA range) */
-extern CORE_ADDR
-symbol_overlayed_address PARAMS ((CORE_ADDR, asection *));
+/* 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 PARAMS ((struct objfile *, struct section_offsets *, int,
- file_ptr, unsigned int, file_ptr, unsigned int));
+extern int symfile_map_offsets_to_segments (bfd *,
+ const 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 PARAMS ((bfd *abfd));
+/* Names for a dwarf2 debugging section. The field NORMAL is the normal
+ section name (usually from the DWARF standard), while the field COMPRESSED
+ is the name of compressed sections. If your object file format doesn't
+ support compressed sections, the field COMPRESSED can be NULL. Likewise,
+ the debugging section is not supported, the field NORMAL can be NULL too.
+ It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED
+ field. */
+
+struct dwarf2_section_names {
+ const char *normal;
+ const char *compressed;
+};
-extern void dwarf2_build_psymtabs PARAMS ((struct objfile *,
- struct section_offsets *,
- int));
-/* From mdebugread.c */
+/* List of names for dward2 debugging sections. Also most object file formats
+ use the standardized (ie ELF) names, some (eg XCOFF) have customized names
+ due to restrictions.
+ The table for the standard names is defined in dwarf2read.c. Please
+ update all instances of dwarf2_debug_sections if you add a field to this
+ structure. It is always safe to use { NULL, NULL } in this case. */
+
+struct dwarf2_debug_sections {
+ struct dwarf2_section_names info;
+ struct dwarf2_section_names abbrev;
+ struct dwarf2_section_names line;
+ struct dwarf2_section_names loc;
+ struct dwarf2_section_names macinfo;
+ struct dwarf2_section_names macro;
+ struct dwarf2_section_names str;
+ struct dwarf2_section_names ranges;
+ struct dwarf2_section_names types;
+ struct dwarf2_section_names addr;
+ struct dwarf2_section_names frame;
+ struct dwarf2_section_names eh_frame;
+ struct dwarf2_section_names gdb_index;
+ /* This field has no meaning, but exists solely to catch changes to
+ this structure which are not reflected in some instance. */
+ int sentinel;
+};
-/* 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;
+extern int dwarf2_has_info (struct objfile *,
+ const struct dwarf2_debug_sections *);
+
+/* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */
+enum dwarf2_section_enum {
+ DWARF2_DEBUG_FRAME,
+ DWARF2_EH_FRAME
};
-extern void
-mdebug_build_psymtabs PARAMS ((struct objfile *,
- const struct ecoff_debug_swap *,
- struct ecoff_debug_info *,
- struct section_offsets *));
-
-extern void
-elfmdebug_build_psymtabs PARAMS ((struct objfile *,
- const struct ecoff_debug_swap *,
- asection *,
- struct section_offsets *));
-
-#endif /* !defined(SYMFILE_H) */
+
+extern void dwarf2_get_section_info (struct objfile *,
+ enum dwarf2_section_enum,
+ asection **, const gdb_byte **,
+ bfd_size_type *);
+
+extern int dwarf2_initialize_objfile (struct objfile *);
+extern void dwarf2_build_psymtabs (struct objfile *);
+extern void dwarf2_build_frame_info (struct objfile *);
+
+void dwarf2_free_objfile (struct objfile *);
+
+/* From mdebugread.c */
+
+extern void mdebug_build_psymtabs (struct objfile *,
+ const struct ecoff_debug_swap *,
+ struct ecoff_debug_info *);
+
+extern void elfmdebug_build_psymtabs (struct objfile *,
+ const struct ecoff_debug_swap *,
+ asection *);
+
+/* From minidebug.c. */
+
+extern bfd *find_separate_debug_file_in_section (struct objfile *);
+
+#endif /* !defined(SYMFILE_H) */
projects / deliverable / binutils-gdb.git / blobdiff