X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fsymfile.h;h=17e02a9da843a3d4e26f9db2c6d2caf21c34c733;hb=06a6207a1ab458521656f293bb1ca8fd013d6f7c;hp=56cf4653850540e161cc29b9d3e7a5e69ef0dc2e;hpb=27e232885db363fb545fd2f450e72d929e59b8f6;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/symfile.h b/gdb/symfile.h
index 56cf465385..17e02a9da8 100644
--- a/gdb/symfile.h
+++ b/gdb/symfile.h
@@ -1,12 +1,12 @@
/* Definitions for reading symbol files into GDB.
- Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996
- 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,
@@ -15,291 +15,617 @@
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 . */
#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;
+
+/* Comparison function for symbol look ups. */
+
+typedef int (symbol_compare_ftype) (const char *string1,
+ const char *string2);
+
+struct other_sections
+{
+ other_sections (CORE_ADDR addr_, std::string &&name_, int sectindex_)
+ : addr (addr_),
+ name (std::move (name_)),
+ sectindex (sectindex_)
+ {
+ }
-/* 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. */
+ other_sections (other_sections &&other) = default;
-struct psymbol_allocation_list
- {
+ DISABLE_COPY_AND_ASSIGN (other_sections);
- /* Pointer to beginning of dynamically allocated array of pointers to
- partial symbols. The array is dynamically expanded as necessary to
- accommodate more pointers. */
+ CORE_ADDR addr;
+ std::string name;
- struct partial_symbol **list;
+ /* SECTINDEX must be valid for associated BFD or set to -1.
+ See syms_from_objfile_1 for an exception to this rule.
+ */
+ int sectindex;
+};
- /* Pointer to next available slot in which to store a pointer to a partial
- symbol. */
+/* 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 partial_symbol **next;
+typedef std::vector section_addr_info;
- /* 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. */
+/* 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;
+};
- int size;
- };
+/* Callback for quick_symbol_functions->map_symbol_filenames. */
-/* 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 40
-struct section_addr_info
+typedef void (symbol_filename_ftype) (const char *filename,
+ const char *fullname, void *data);
+
+/* Callback for quick_symbol_functions->expand_symtabs_matching
+ to match a file name. */
+
+typedef bool (expand_symtabs_file_matcher_ftype) (const char *filename,
+ bool basenames);
+
+/* Callback for quick_symbol_functions->expand_symtabs_matching
+ to match a symbol name. */
+
+typedef bool (expand_symtabs_symbol_matcher_ftype) (const char *name);
+
+/* Callback for quick_symbol_functions->expand_symtabs_matching
+ to be called after a symtab has been expanded. */
+
+typedef void (expand_symtabs_exp_notify_ftype) (compunit_symtab *symtab);
+
+/* 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
{
- /* Sections whose names are file format dependant. */
- struct other_sections
- {
- CORE_ADDR addr;
- char *name;
- int sectindex;
- } other[MAX_SECTIONS];
+ /* 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 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 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 file_matcher,
+ const lookup_name_info &lookup_name,
+ gdb::function_view symbol_matcher,
+ gdb::function_view 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);
+};
+
+/* 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 a reference to vector of probe objects. */
+ const std::vector> &(*sym_get_probes)
+ (struct objfile *);
};
/* Structure to keep track of symbol reading functions for various
object file types. */
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 *);
- /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
- (enum bfd_flavour)-1 for xcoff). */
+ /* 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. */
- enum bfd_flavour sym_flavour;
+ void (*sym_init) (struct objfile *);
- /* 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. */
+ /* 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_new_init) (struct objfile *);
+ void (*sym_read) (struct objfile *, symfile_add_flags);
- /* 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. */
+ /* 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_init) (struct objfile *);
+ void (*sym_read_psymbols) (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. */
+ /* 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_read) (struct objfile *, int);
+ void (*sym_finish) (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 *);
+ /* This function produces a file-dependent section_offsets
+ structure, allocated in the objfile's storage.
- /* 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 section_addr_info structure contains the offset of loadable and
+ allocated sections, relative to the absolute offsets found in the BFD. */
- void (*sym_offsets) (struct objfile *, struct section_addr_info *);
+ void (*sym_offsets) (struct objfile *, const 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. */
+ /* 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 sym_fns *next;
+ 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) (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. */
+
+ bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf);
+
+ /* 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;
+
+ /* The "quick" (aka partial) symbol functions for this symbol
+ reader. */
+ const struct quick_symbol_functions *qf;
+};
+
+extern 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,
+ const section_addr_info &addrs);
+
+extern void addr_info_make_relative (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 *);
+extern void default_symfile_offsets (struct objfile *objfile,
+ const section_addr_info &);
+/* The default version of sym_fns.sym_segments for readers that don't
+ do anything special. */
-extern void
-extend_psymbol_list (struct psymbol_allocation_list *, struct objfile *);
+extern struct symfile_segment_data *default_symfile_segments (bfd *abfd);
-/* Add any kind of symbol to a psymbol_allocation_list. */
+/* The default version of sym_fns.sym_relocate for readers that don't
+ do anything special. */
-/* #include "demangle.h" */
+extern bfd_byte *default_symfile_relocate (struct objfile *objfile,
+ asection *sectp, bfd_byte *buf);
-extern void
-add_psymbol_to_list (char *, int, namespace_enum, enum address_class,
- struct psymbol_allocation_list *, long, CORE_ADDR,
- enum language, struct objfile *);
+extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *)
+ ATTRIBUTE_NONNULL (1);
-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 *);
+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 void init_psymbol_list (struct objfile *, int);
+extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *);
-extern void sort_pst_symbols (struct partial_symtab *);
+extern void clear_symtab_users (symfile_add_flags add_flags);
-extern struct symtab *allocate_symtab (char *, struct objfile *);
+extern enum language deduce_language_from_filename (const char *);
-extern int free_named_symtabs (char *);
+/* 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);
-extern void fill_in_vptr_fieldno (struct type *);
+extern struct objfile *symbol_file_add (const char *, symfile_add_flags,
+ section_addr_info *, objfile_flags);
-extern void add_symtab_fns (struct sym_fns *);
+extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags,
+ section_addr_info *,
+ objfile_flags, struct objfile *parent);
-extern void init_entry_point_info (struct objfile *);
+extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags,
+ struct objfile *);
-extern void
-syms_from_objfile (struct objfile *, struct section_addr_info *, int, int);
+extern std::string find_separate_debug_file_by_debuglink (struct objfile *);
-extern void new_symfile_objfile (struct objfile *, int, int);
+/* Build (allocate and populate) a section_addr_info struct from an
+ existing section table. */
-extern struct objfile *symbol_file_add (char *, int,
- struct section_addr_info *, int, int);
+extern section_addr_info
+ build_section_addr_info_from_section_table (const struct target_section
+ *start,
+ const struct target_section
+ *end);
-/* Build (allocate and populate) a section_addr_info struct from
- an existing section table. */
+ /* Variables */
-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);
+/* 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
+ 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 bool auto_solib_add;
+
+/* From symfile.c */
-/* Free all memory allocated by build_section_addr_info_from_section_table. */
+extern void set_initial_language (void);
-extern void
-free_section_addr_info (struct section_addr_info *);
+extern void find_lowest_section (bfd *, asection *, void *);
+extern gdb_bfd_ref_ptr symfile_bfd_open (const char *);
-extern struct partial_symtab *start_psymtab_common (struct objfile *,
- struct section_offsets *,
- char *, CORE_ADDR,
- struct partial_symbol **,
- struct partial_symbol **);
+extern int get_section_index (struct objfile *, const char *);
-/* Sorting your symbols for fast lookup or alphabetical printing. */
+extern int print_symbol_loading_p (int from_tty, int mainline, int full);
-extern void sort_block_syms (struct block *);
+/* 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 sort_symtab_syms (struct symtab *);
+/* Return the "mapped" overlay section containing the PC. */
+extern struct obj_section *find_pc_mapped_section (CORE_ADDR);
-/* 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. */
+/* Return any overlay section containing the PC (even in its LMA
+ region). */
+extern struct obj_section *find_pc_overlay (CORE_ADDR);
-extern char *obsavestring (char *, int, struct obstack *);
+/* Return true if the section is an overlay. */
+extern int section_is_overlay (struct obj_section *);
-/* Concatenate strings S1, S2 and S3; return the new string.
- Space is found in the symbol_obstack. */
+/* Return true if the overlay section is currently "mapped". */
+extern int section_is_mapped (struct obj_section *);
-extern char *obconcat (struct obstack *obstackp, const char *, const char *,
- const char *);
+/* Return true if pc belongs to section's VMA. */
+extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *);
- /* Variables */
+/* Return true if pc belongs to section's LMA. */
+extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *);
-/* whether to auto load solibs at startup time: 0/1.
+/* Map an address from a section's LMA to its VMA. */
+extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *);
- On all platforms, 0 means "don't auto load".
+/* Map an address from a section's VMA to its LMA. */
+extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *);
- 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.
+/* Convert an address in an overlay section (force into VMA range). */
+extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *);
- On other platforms, > 0 means, "always auto load".
- */
+/* Load symbols from a file. */
+extern void symbol_file_add_main (const char *args,
+ symfile_add_flags add_flags);
-extern int auto_solib_add;
+/* Clear GDB symbol tables. */
+extern void symbol_file_clear (int from_tty);
-/* From symfile.c */
+/* Default overlay update function. */
+extern void simple_overlay_update (struct obj_section *);
-extern CORE_ADDR entry_point_address (void);
+extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *,
+ bfd_byte *);
-extern struct partial_symtab *allocate_psymtab (char *, struct objfile *);
+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 void discard_psymtab (struct partial_symtab *);
+extern scoped_restore_tmpl increment_reading_symtab (void);
-extern void find_lowest_section (bfd *, asection *, PTR);
+void expand_symtabs_matching
+ (gdb::function_view file_matcher,
+ const lookup_name_info &lookup_name,
+ gdb::function_view symbol_matcher,
+ gdb::function_view expansion_notify,
+ enum search_domain kind);
-extern bfd *symfile_bfd_open (char *);
+void map_symbol_filenames (symbol_filename_ftype *fun, void *data,
+ int need_fullname);
-/* Utility functions for overlay sections: */
-extern int overlay_debugging;
-extern int overlay_cache_invalid;
+/* Target-agnostic function to load the sections of an executable into memory.
-/* return the "mapped" overlay section containing the PC */
-extern asection *find_pc_mapped_section (CORE_ADDR);
+ 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);
-/* return any overlay section containing the PC (even in its LMA region) */
-extern asection *find_pc_overlay (CORE_ADDR);
+/* From dwarf2read.c */
-/* return true if the section is an overlay */
-extern int section_is_overlay (asection *);
+/* 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;
+};
-/* return true if the overlay section is currently "mapped" */
-extern int section_is_mapped (asection *);
+/* 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;
+};
-/* return true if pc belongs to section's VMA */
-extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, asection *);
+extern int dwarf2_has_info (struct objfile *,
+ const struct dwarf2_debug_sections *,
+ bool = false);
-/* return true if pc belongs to section's LMA */
-extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, asection *);
+/* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */
+enum dwarf2_section_enum {
+ DWARF2_DEBUG_FRAME,
+ DWARF2_EH_FRAME
+};
-/* map an address from a section's LMA to its VMA */
-extern CORE_ADDR overlay_mapped_address (CORE_ADDR, asection *);
+extern void dwarf2_get_section_info (struct objfile *,
+ enum dwarf2_section_enum,
+ asection **, const gdb_byte **,
+ bfd_size_type *);
-/* map an address from a section's VMA to its LMA */
-extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, asection *);
+/* A DWARF names index variant. */
+enum class dw_index_kind
+{
+ /* GDB's own .gdb_index format. */
+ GDB_INDEX,
-/* convert an address in an overlay section (force into VMA range) */
-extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *);
+ /* DWARF5 .debug_names. */
+ DEBUG_NAMES,
+};
-/* From dwarfread.c */
+/* 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
-dwarf_build_psymtabs (struct objfile *, int, file_ptr, unsigned int,
- file_ptr, unsigned int);
+extern void dwarf2_build_psymtabs (struct objfile *);
+extern void dwarf2_build_frame_info (struct objfile *);
-/* From dwarf2read.c */
+void dwarf2_free_objfile (struct objfile *);
-extern int dwarf2_has_info (bfd * abfd);
+/* From minidebug.c. */
-extern void dwarf2_build_psymtabs (struct objfile *, int);
+extern gdb_bfd_ref_ptr find_separate_debug_file_in_section (struct objfile *);
-/* From mdebugread.c */
+/* True if we are printing debug output about separate debug info files. */
-/* 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 *);
+extern bool separate_debug_file_debug;
#endif /* !defined(SYMFILE_H) */