/* Definitions for reading symbol files into GDB.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright (C) 1990-2020 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"
+#include "probe.h"
+#include "symfile-add-flags.h"
+#include "objfile-flags.h"
+#include "gdb_bfd.h"
+#include "gdbsupport/function-view.h"
/* Opaque declarations. */
-
+struct target_section;
+struct objfile;
+struct obj_section;
struct obstack;
+struct block;
+struct value;
+struct frame_info;
+struct agent_expr;
+struct axs_value;
+class probe;
-/* 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. */
+/* Comparison function for symbol look ups. */
-struct psymbol_allocation_list
- {
+typedef int (symbol_compare_ftype) (const char *string1,
+ const char *string2);
- /* 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;
+struct other_sections
+{
+ other_sections (CORE_ADDR addr_, std::string &&name_, int sectindex_)
+ : addr (addr_),
+ name (std::move (name_)),
+ sectindex (sectindex_)
+ {
+ }
- /* Pointer to next available slot in which to store a pointer to a partial
- symbol. */
+ other_sections (other_sections &&other) = default;
- struct partial_symbol **next;
+ DISABLE_COPY_AND_ASSIGN (other_sections);
- /* 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. */
+ CORE_ADDR addr;
+ std::string name;
- int size;
- };
+ /* SECTINDEX must be valid for associated BFD or set to -1.
+ See syms_from_objfile_1 for an exception to this rule.
+ */
+ int sectindex;
+};
/* 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
+ 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 (). */
+
+typedef std::vector<other_sections> section_addr_info;
+
+/* A table listing the load segments in a symfile, and which segment
+ each BFD section belongs to. */
+struct symfile_segment_data
{
- /* Sections whose names are file format dependent. */
- struct other_sections
- {
- CORE_ADDR addr;
- char *name;
- int sectindex;
- } other[MAX_SECTIONS];
+ /* 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;
};
-/* Structure to keep track of symbol reading functions for various
- object file types. */
+/* Callback for quick_symbol_functions->map_symbol_filenames. */
-struct sym_fns
- {
+typedef void (symbol_filename_ftype) (const char *filename,
+ const char *fullname, void *data);
- /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
- (enum bfd_flavour)-1 for xcoff). */
+/* Callback for quick_symbol_functions->expand_symtabs_matching
+ to match a file name. */
- enum bfd_flavour sym_flavour;
+typedef bool (expand_symtabs_file_matcher_ftype) (const char *filename,
+ bool basenames);
- /* 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. */
+/* Callback for quick_symbol_functions->expand_symtabs_matching
+ to match a symbol name. */
- void (*sym_new_init) (struct objfile *);
+typedef bool (expand_symtabs_symbol_matcher_ftype) (const char *name);
- /* 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. */
+/* Callback for quick_symbol_functions->expand_symtabs_matching
+ to be called after a symtab has been expanded. */
- void (*sym_init) (struct objfile *);
+typedef void (expand_symtabs_exp_notify_ftype) (compunit_symtab *symtab);
- /* 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. */
+/* 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.
- void (*sym_read) (struct objfile *, int);
+ The quick symbol functions are generally opaque: the underlying
+ representation is hidden from the caller.
- /* Called when we are finished with an objfile. Should do all cleanup
- that is specific to the object file format for the particular objfile. */
+ 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.
- void (*sym_finish) (struct objfile *);
+ The exact list of functions here was determined in an ad hoc way
+ based on gdb's history. */
- /* 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 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 to it.
+ The result of this call is returned. */
+ bool (*map_symtabs_matching_filename)
+ (struct objfile *objfile, const char *name, const char *real_path,
+ gdb::function_view<bool (symtab *)> callback);
+
+ /* Check to see if the symbol is defined in a "partial" symbol table
+ of OBJFILE. BLOCK_INDEX 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 compunit in which the symbol is
+ defined, or NULL if no such symbol table exists. If OBJFILE
+ contains !TYPE_OPAQUE symbol prefer its compunit. If it contains
+ only TYPE_OPAQUE symbol(s), return at least that compunit. */
+ struct compunit_symtab *(*lookup_symbol) (struct objfile *objfile,
+ block_enum block_index,
+ 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);
+
+ /* 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);
+
+ /* Find global or static symbols in all tables that are in DOMAIN
+ 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 and NAMESPACE 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 true to indicate that the scan should continue, or
+ false to indicate that the scan should be terminated. */
+
+ void (*map_matching_symbols)
+ (struct objfile *,
+ const lookup_name_info &lookup_name,
+ domain_enum domain,
+ int global,
+ gdb::function_view<symbol_found_callback_ftype> callback,
+ 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
+ is passed to it. If the matcher returns false, the file is
+ skipped. If FILE_MATCHER is NULL the file is not skipped. If
+ BASENAMES is true the matcher should consider only file base
+ names (the passed file name is already only the lbasename'd
+ part).
+
+ Otherwise, if KIND does not match, this symbol is skipped.
+
+ If even KIND matches, SYMBOL_MATCHER is called for each symbol
+ defined in the file. The symbol "search" name is passed to
+ SYMBOL_MATCHER.
+
+ If SYMBOL_MATCHER returns false, then the symbol is skipped.
+
+ Otherwise, the symbol's symbol table is expanded. */
+ void (*expand_symtabs_matching)
+ (struct objfile *objfile,
+ gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
+ const lookup_name_info &lookup_name,
+ gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
+ gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
+ enum search_domain kind);
+
+ /* Return the comp unit from OBJFILE that contains PC and
+ SECTION. Return NULL if there is no such compunit. This
+ should return the compunit that contains a symbol whose
+ address exactly matches PC, or, if there is no exact match, the
+ compunit that contains a symbol whose address is closest to
+ PC. */
+ struct compunit_symtab *(*find_pc_sect_compunit_symtab)
+ (struct objfile *objfile, struct bound_minimal_symbol msymbol,
+ CORE_ADDR pc, struct obj_section *section, int warn_if_readin);
+
+ /* Return the comp unit from OBJFILE that contains a symbol at
+ ADDRESS. Return NULL if there is no such comp unit. Unlike
+ find_pc_sect_compunit_symtab, any sort of symbol (not just text
+ symbols) can be considered, and only exact address matches are
+ considered. This pointer may be NULL. */
+ struct compunit_symtab *(*find_compunit_symtab_by_address)
+ (struct objfile *objfile, CORE_ADDR address);
+
+ /* 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);
+};
- void (*sym_offsets) (struct objfile *, struct section_addr_info *);
+/* Structure of functions used for probe support. If one of these functions
+ is provided, all must be. */
- /* 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_probe_fns
+{
+ /* If non-NULL, return a reference to vector of probe objects. */
+ const std::vector<std::unique_ptr<probe>> &(*sym_get_probes)
+ (struct objfile *);
+};
+
+/* Structure to keep track of symbol reading functions for various
+ object file types. */
- struct sym_fns *next;
+struct sym_fns
+{
+ /* 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 *);
+
+ /* 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 *);
+
+ /* 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) (struct objfile *, symfile_add_flags);
+
+ /* 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.
+ */
+
+ void (*sym_read_psymbols) (struct 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) (struct objfile *);
-/* 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 *);
+ /* This function produces a file-dependent section_offsets
+ structure, allocated in the objfile's storage.
+ The section_addr_info structure contains the offset of loadable and
+ allocated sections, relative to the absolute offsets found in the BFD. */
-extern void
-extend_psymbol_list (struct psymbol_allocation_list *, struct objfile *);
+ void (*sym_offsets) (struct objfile *, const section_addr_info &);
-/* Add any kind of symbol to a psymbol_allocation_list. */
+ /* 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. */
-/* #include "demangle.h" */
+ struct symfile_segment_data *(*sym_segments) (bfd *abfd);
-extern void
-add_psymbol_to_list (char *, int, namespace_enum, enum address_class,
- struct psymbol_allocation_list *, long, CORE_ADDR,
- enum language, struct objfile *);
+ /* This function should read the linetable from the objfile when
+ the line table cannot be read while processing the debugging
+ information. */
-extern void
-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 *);
+ void (*sym_read_linetable) (struct objfile *);
+ /* 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. */
-extern void init_psymbol_list (struct objfile *, int);
+ bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf);
-extern void sort_pst_symbols (struct partial_symtab *);
+ /* 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;
-extern struct symtab *allocate_symtab (char *, struct objfile *);
+ /* The "quick" (aka partial) symbol functions for this symbol
+ reader. */
+ const struct quick_symbol_functions *qf;
+};
-extern int free_named_symtabs (char *);
+extern section_addr_info
+ build_section_addr_info_from_objfile (const struct objfile *objfile);
-extern void fill_in_vptr_fieldno (struct type *);
+extern void relative_addr_info_to_section_offsets
+ (struct section_offsets *section_offsets, int num_sections,
+ const section_addr_info &addrs);
-extern void add_symtab_fns (struct sym_fns *);
+extern void addr_info_make_relative (section_addr_info *addrs,
+ bfd *abfd);
-extern void init_entry_point_info (struct objfile *);
+/* The default version of sym_fns.sym_offsets for readers that don't
+ do anything special. */
-extern void
-syms_from_objfile (struct objfile *, struct section_addr_info *, int, int);
+extern void default_symfile_offsets (struct objfile *objfile,
+ const section_addr_info &);
-extern void new_symfile_objfile (struct objfile *, int, int);
+/* The default version of sym_fns.sym_segments for readers that don't
+ do anything special. */
-extern struct objfile *symbol_file_add (char *, int,
- struct section_addr_info *, int, int);
+extern struct symfile_segment_data *default_symfile_segments (bfd *abfd);
-/* Build (allocate and populate) a section_addr_info struct from
- an existing section table. */
+/* The default version of sym_fns.sym_relocate for readers that don't
+ do anything special. */
-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 bfd_byte *default_symfile_relocate (struct objfile *objfile,
+ asection *sectp, bfd_byte *buf);
-/* Free all memory allocated by build_section_addr_info_from_section_table. */
+extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *)
+ ATTRIBUTE_NONNULL (1);
-extern void
-free_section_addr_info (struct section_addr_info *);
+extern struct compunit_symtab *allocate_compunit_symtab (struct objfile *,
+ const char *)
+ ATTRIBUTE_NONNULL (1);
+extern void add_compunit_symtab_to_objfile (struct compunit_symtab *cu);
-extern struct partial_symtab *start_psymtab_common (struct objfile *,
- struct section_offsets *,
- char *, CORE_ADDR,
- struct partial_symbol **,
- struct partial_symbol **);
+extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *);
-/* Sorting your symbols for fast lookup or alphabetical printing. */
+extern void clear_symtab_users (symfile_add_flags add_flags);
-extern void sort_block_syms (struct block *);
+extern enum language deduce_language_from_filename (const char *);
-extern void sort_symtab_syms (struct symtab *);
+/* Map the filename extension EXT to the language LANG. Any previous
+ association of EXT will be removed. EXT will be copied by this
+ function. */
+extern void add_filename_language (const char *ext, enum language lang);
-/* 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 struct objfile *symbol_file_add (const char *, symfile_add_flags,
+ section_addr_info *, objfile_flags);
-extern char *obsavestring (const char *, int, struct obstack *);
+extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags,
+ section_addr_info *,
+ objfile_flags, struct objfile *parent);
-/* Concatenate strings S1, S2 and S3; return the new string.
- Space is found in the symbol_obstack. */
+extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags,
+ struct objfile *);
-extern char *obconcat (struct obstack *obstackp, const char *, const char *,
- const char *);
+extern std::string find_separate_debug_file_by_debuglink (struct objfile *);
+
+/* Build (allocate and populate) a section_addr_info struct from an
+ existing section table. */
+
+extern section_addr_info
+ build_section_addr_info_from_section_table (const struct target_section
+ *start,
+ const struct target_section
+ *end);
/* Variables */
-/* If non-zero, shared library symbols will be added automatically
+/* If true, 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
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. */
+ report all the functions that are actually present. */
-extern int auto_solib_limit;
+extern bool auto_solib_add;
/* From symfile.c */
-extern CORE_ADDR entry_point_address (void);
+extern void set_initial_language (void);
-extern struct partial_symtab *allocate_psymtab (char *, struct objfile *);
+extern void find_lowest_section (bfd *, asection *, void *);
-extern void discard_psymtab (struct partial_symtab *);
+extern gdb_bfd_ref_ptr symfile_bfd_open (const char *);
-extern void find_lowest_section (bfd *, asection *, PTR);
+extern int get_section_index (struct objfile *, const char *);
-extern bfd *symfile_bfd_open (char *);
-
-extern int get_section_index (struct objfile *, char *);
+extern int print_symbol_loading_p (int from_tty, int mainline, int full);
/* Utility functions for overlay sections: */
-extern enum overlay_debugging_state {
- ovly_off,
- ovly_on,
+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 (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 asection *find_pc_overlay (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 (asection *);
+/* 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 (asection *);
+/* Return true if the overlay section is currently "mapped". */
+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 *);
+/* Return true if pc belongs to section's VMA. */
+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 *);
+/* Return true if pc belongs to section's LMA. */
+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 *);
+/* Map an address from a section's LMA to its VMA. */
+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 *);
+/* Map an address from a section's VMA to its LMA. */
+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 *);
+/* Convert an address in an overlay section (force into VMA range). */
+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);
+/* Load symbols from a file. */
+extern void symbol_file_add_main (const char *args,
+ symfile_add_flags add_flags);
-/* Clear GDB symbol tables. */
+/* Clear GDB symbol tables. */
extern void symbol_file_clear (int from_tty);
-/* From dwarfread.c */
+/* Default overlay update function. */
+extern void simple_overlay_update (struct obj_section *);
+
+extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *,
+ bfd_byte *);
+
+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 scoped_restore_tmpl<int> increment_reading_symtab (void);
+
+void expand_symtabs_matching
+ (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
+ const lookup_name_info &lookup_name,
+ gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
+ gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
+ enum search_domain kind);
+
+void map_symbol_filenames (symbol_filename_ftype *fun, void *data,
+ int need_fullname);
+
+/* Target-agnostic function to load the sections of an executable into memory.
-extern void
-dwarf_build_psymtabs (struct objfile *, int, file_ptr, unsigned int,
- file_ptr, unsigned int);
+ ARGS should be in the form "EXECUTABLE [OFFSET]", where OFFSET is an
+ optional offset to apply to each section. */
+extern void generic_load (const char *args, int from_tty);
/* From dwarf2read.c */
-extern int dwarf2_has_info (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;
+};
+
+/* 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 loclists;
+ struct dwarf2_section_names macinfo;
+ struct dwarf2_section_names macro;
+ struct dwarf2_section_names str;
+ struct dwarf2_section_names line_str;
+ struct dwarf2_section_names ranges;
+ struct dwarf2_section_names rnglists;
+ 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;
+ struct dwarf2_section_names debug_names;
+ struct dwarf2_section_names debug_aranges;
+ /* This field has no meaning, but exists solely to catch changes to
+ this structure which are not reflected in some instance. */
+ int sentinel;
+};
+
+extern int dwarf2_has_info (struct objfile *,
+ const struct dwarf2_debug_sections *,
+ bool = false);
+
+/* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */
+enum dwarf2_section_enum {
+ DWARF2_DEBUG_FRAME,
+ DWARF2_EH_FRAME
+};
+
+extern void dwarf2_get_section_info (struct objfile *,
+ enum dwarf2_section_enum,
+ asection **, const gdb_byte **,
+ bfd_size_type *);
+
+/* A DWARF names index variant. */
+enum class dw_index_kind
+{
+ /* GDB's own .gdb_index format. */
+ GDB_INDEX,
+
+ /* DWARF5 .debug_names. */
+ DEBUG_NAMES,
+};
+
+/* Initialize for reading DWARF for OBJFILE. Return false if this
+ file will use psymtabs, or true if using an index, in which case
+ *INDEX_KIND is set to the index variant in use. */
+extern bool dwarf2_initialize_objfile (struct objfile *objfile,
+ dw_index_kind *index_kind);
-extern void dwarf2_build_psymtabs (struct objfile *, int);
+extern void dwarf2_build_psymtabs (struct objfile *);
extern void dwarf2_build_frame_info (struct objfile *);
-/* From mdebugread.c */
+void dwarf2_free_objfile (struct objfile *);
-/* 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 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 gdb_bfd_ref_ptr find_separate_debug_file_in_section (struct objfile *);
+
+/* True if we are printing debug output about separate debug info files. */
+
+extern bool separate_debug_file_debug;
#endif /* !defined(SYMFILE_H) */
projects / deliverable / binutils-gdb.git / blobdiff