/* Definitions for symbol file management in GDB.
- Copyright (C) 1992-2021 Free Software Foundation, Inc.
+ Copyright (C) 1992-2022 Free Software Foundation, Inc.
This file is part of GDB.
#define OBJFILES_H
#include "hashtab.h"
-#include "gdb_obstack.h" /* For obstack internals. */
+#include "gdbsupport/gdb_obstack.h" /* For obstack internals. */
#include "objfile-flags.h"
#include "symfile.h"
#include "progspace.h"
#include "gdbarch.h"
#include "gdbsupport/refcounted-object.h"
#include "jit.h"
+#include "quick-symbol.h"
+#include <forward_list>
struct htab;
struct objfile_data;
unsigned initialized : 1;
};
-/* Sections in an objfile. The section offsets are stored in the
- OBJFILE. */
-
-struct obj_section
-{
- /* BFD section pointer */
- struct bfd_section *the_bfd_section;
-
- /* Objfile this section is part of. */
- struct objfile *objfile;
-
- /* True if this "overlay section" is mapped into an "overlay region". */
- int ovly_mapped;
-};
-
-/* Relocation offset applied to S. */
-#define obj_section_offset(s) \
- (((s)->objfile->section_offsets)[gdb_bfd_section_index ((s)->objfile->obfd, (s)->the_bfd_section)])
-
-/* The memory address of section S (vma + offset). */
-#define obj_section_addr(s) \
- (bfd_section_vma (s->the_bfd_section) \
- + obj_section_offset (s))
-
-/* The one-passed-the-end memory address of section S
- (vma + size + offset). */
-#define obj_section_endaddr(s) \
- (bfd_section_vma (s->the_bfd_section) \
- + bfd_section_size ((s)->the_bfd_section) \
- + obj_section_offset (s))
-
#define ALL_OBJFILE_OSECTIONS(objfile, osect) \
for (osect = objfile->sections; osect < objfile->sections_end; osect++) \
if (osect->the_bfd_section == NULL) \
#define OBJSTAT(objfile, expr) (objfile -> stats.expr)
#define OBJSTATS struct objstats stats
extern void print_objfile_statistics (void);
-extern void print_symbol_bcache_statistics (void);
/* Number of entries in the minimal symbol hash table. */
#define MINIMAL_SYMBOL_HASH_SIZE 2039
struct objfile_per_bfd_storage
{
- objfile_per_bfd_storage ()
- : minsyms_read (false)
+ objfile_per_bfd_storage (bfd *bfd)
+ : minsyms_read (false), m_bfd (bfd)
{}
~objfile_per_bfd_storage ();
+ /* Intern STRING in this object's string cache and return the unique copy.
+ The copy has the same lifetime as this object.
+
+ STRING must be null-terminated. */
+
+ const char *intern (const char *str)
+ {
+ return (const char *) string_cache.insert (str, strlen (str) + 1);
+ }
+
+ /* Same as the above, but for an std::string. */
+
+ const char *intern (const std::string &str)
+ {
+ return (const char *) string_cache.insert (str.c_str (), str.size () + 1);
+ }
+
+ /* Get the BFD this object is associated to. */
+
+ bfd *get_bfd () const
+ {
+ return m_bfd;
+ }
+
/* The storage has an obstack of its own. */
auto_obstack storage_obstack;
/* All the different languages of symbols found in the demangled
hash table. */
std::bitset<nr_languages> demangled_hash_languages;
+
+private:
+ /* The BFD this object is associated to. */
+
+ bfd *m_bfd;
};
/* An iterator that first returns a parent objfile, and then each
/* A range adapter wrapping separate_debug_iterator. */
-class separate_debug_range
-{
-public:
-
- explicit separate_debug_range (struct objfile *objfile)
- : m_objfile (objfile)
- {
- }
-
- separate_debug_iterator begin ()
- {
- return separate_debug_iterator (m_objfile);
- }
-
- separate_debug_iterator end ()
- {
- return separate_debug_iterator (nullptr);
- }
-
-private:
-
- struct objfile *m_objfile;
-};
+typedef iterator_range<separate_debug_iterator> separate_debug_range;
/* Master structure for keeping track of each file from which
gdb reads symbols. There are several ways these get allocated: 1.
DISABLE_COPY_AND_ASSIGN (objfile);
- /* A range adapter that makes it possible to iterate over all
- psymtabs in one objfile. */
-
- psymtab_storage::partial_symtab_range psymtabs ()
- {
- return partial_symtabs->range ();
- }
-
- /* Reset the storage for the partial symbol tables. */
-
- void reset_psymtabs ()
- {
- psymbol_map.clear ();
- partial_symtabs.reset (new psymtab_storage ());
- }
-
- typedef next_adapter<struct compunit_symtab> compunits_range;
-
/* A range adapter that makes it possible to iterate over all
compunits in one objfile. */
- compunits_range compunits ()
+ compunit_symtab_range compunits ()
{
- return compunits_range (compunit_symtabs);
+ return compunit_symtab_range (compunit_symtabs);
}
/* A range adapter that makes it possible to iterate over all
minimal symbols of an objfile. */
- class msymbols_range
- {
- public:
-
- explicit msymbols_range (struct objfile *objfile)
- : m_objfile (objfile)
- {
- }
-
- minimal_symbol_iterator begin () const
- {
- return minimal_symbol_iterator (m_objfile->per_bfd->msymbols.get ());
- }
-
- minimal_symbol_iterator end () const
- {
- return minimal_symbol_iterator
- (m_objfile->per_bfd->msymbols.get ()
- + m_objfile->per_bfd->minimal_symbol_count);
- }
-
- private:
-
- struct objfile *m_objfile;
- };
+ typedef iterator_range<minimal_symbol_iterator> msymbols_range;
/* Return a range adapter for iterating over all minimal
symbols. */
msymbols_range msymbols ()
{
- return msymbols_range (this);
+ auto start = minimal_symbol_iterator (per_bfd->msymbols.get ());
+ auto end = minimal_symbol_iterator (per_bfd->msymbols.get ()
+ + per_bfd->minimal_symbol_count);
+ return msymbols_range (start, end);
}
/* Return a range adapter for iterating over all the separate debug
separate_debug_range separate_debug_objfiles ()
{
- return separate_debug_range (this);
+ auto start = separate_debug_iterator (this);
+ auto end = separate_debug_iterator (nullptr);
+ return separate_debug_range (start, end);
}
CORE_ADDR text_section_offset () const
lifetime as the per-BFD object. */
const char *intern (const char *str)
{
- return (const char *) per_bfd->string_cache.insert (str, strlen (str) + 1);
+ return per_bfd->intern (str);
}
/* Intern STRING and return the unique copy. The copy has the same
lifetime as the per-BFD object. */
const char *intern (const std::string &str)
{
- return (const char *) per_bfd->string_cache.insert (str.c_str (),
- str.size () + 1);
+ return per_bfd->intern (str);
}
/* Retrieve the gdbarch associated with this objfile. */
bool has_partial_symbols ();
+ /* Return true if this objfile has any unexpanded symbols. A return
+ value of false indicates either, that this objfile has all its
+ symbols fully expanded (i.e. fully read in), or that this objfile has
+ no symbols at all (i.e. no debug information). */
+ bool has_unexpanded_symtabs ();
+
/* See quick_symbol_functions. */
struct symtab *find_last_source_symtab ();
/* See quick_symbol_functions. */
void forget_cached_source_info ();
- /* See quick_symbol_functions. */
+ /* 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
(const char *name, const char *real_path,
gdb::function_view<bool (symtab *)> callback);
- /* See quick_symbol_functions. */
+ /* Check to see if the symbol is defined in a "partial" symbol table
+ of this 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 (block_enum kind, const char *name,
domain_enum domain);
/* See quick_symbol_functions. */
- void print_stats ();
+ void print_stats (bool print_bcache);
/* See quick_symbol_functions. */
void dump ();
- /* See quick_symbol_functions. */
+ /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that
+ the corresponding symbol tables are loaded. */
void expand_symtabs_for_function (const char *func_name);
/* See quick_symbol_functions. */
void expand_all_symtabs ();
- /* See quick_symbol_functions. */
+ /* 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 (const char *fullname);
/* See quick_symbol_functions. */
- void map_matching_symbols
+ void expand_matching_symbols
(const lookup_name_info &name, domain_enum domain,
int global,
- gdb::function_view<symbol_found_callback_ftype> callback,
symbol_compare_ftype *ordered_compare);
/* See quick_symbol_functions. */
- void expand_symtabs_matching
+ bool 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,
+ block_search_flags search_flags,
+ domain_enum domain,
enum search_domain kind);
/* See quick_symbol_functions. */
int warn_if_readin);
/* See quick_symbol_functions. */
- void map_symbol_filenames (symbol_filename_ftype *fun, void *data,
- int need_fullname);
+ void map_symbol_filenames (gdb::function_view<symbol_filename_ftype> fun,
+ bool need_fullname);
/* See quick_symbol_functions. */
struct compunit_symtab *find_compunit_symtab_by_address (CORE_ADDR address);
domain_enum domain,
bool *symbol_found_p);
+ /* See quick_symbol_functions. */
+ void require_partial_symbols (bool verbose);
+
+ /* Return the relocation offset applied to SECTION. */
+ CORE_ADDR section_offset (bfd_section *section) const
+ {
+ /* The section's owner can be nullptr if it is one of the _bfd_std_section
+ section. */
+ gdb_assert (section->owner == nullptr || section->owner == this->obfd);
+
+ int idx = gdb_bfd_section_index (this->obfd, section);
+ return this->section_offsets[idx];
+ }
+
+ /* Set the relocation offset applied to SECTION. */
+ void set_section_offset (bfd_section *section, CORE_ADDR offset)
+ {
+ /* The section's owner can be nullptr if it is one of the _bfd_std_section
+ section. */
+ gdb_assert (section->owner == nullptr || section->owner == this->obfd);
+
+ int idx = gdb_bfd_section_index (this->obfd, section);
+ this->section_offsets[idx] = offset;
+ }
/* The object file's original name as specified by the user,
made absolute, and tilde-expanded. However, it is not canonicalized
struct compunit_symtab *compunit_symtabs = nullptr;
- /* The partial symbol tables. */
-
- std::shared_ptr<psymtab_storage> partial_symtabs;
-
/* The object file's BFD. Can be null if the objfile contains only
minimal symbols, e.g. the run time common symbols for SunOS4. */
struct obstack objfile_obstack {};
- /* Map symbol addresses to the partial symtab that defines the
- object at that address. */
-
- std::vector<std::pair<CORE_ADDR, partial_symtab *>> psymbol_map;
-
/* Structure which keeps track of functions that manipulate objfile's
of the same type as this objfile. I.e. the function to read partial
symbols for example. Note that this structure is in statically
/* The "quick" (aka partial) symbol functions for this symbol
reader. */
- const struct quick_symbol_functions *qf = nullptr;
+ std::forward_list<quick_symbol_functions_up> qf;
/* Per objfile data-pointers required by other GDB modules. */
typedef std::unique_ptr<objfile, objfile_deleter> objfile_up;
+
+/* Sections in an objfile. The section offsets are stored in the
+ OBJFILE. */
+
+struct obj_section
+{
+ /* Relocation offset applied to the section. */
+ CORE_ADDR offset () const
+ {
+ return this->objfile->section_offset (this->the_bfd_section);
+ }
+
+ /* Set the relocation offset applied to the section. */
+ void set_offset (CORE_ADDR offset)
+ {
+ this->objfile->set_section_offset (this->the_bfd_section, offset);
+ }
+
+ /* The memory address of the section (vma + offset). */
+ CORE_ADDR addr () const
+ {
+ return bfd_section_vma (this->the_bfd_section) + this->offset ();
+ }
+
+ /* The one-passed-the-end memory address of the section
+ (vma + size + offset). */
+ CORE_ADDR endaddr () const
+ {
+ return this->addr () + bfd_section_size (this->the_bfd_section);
+ }
+
+ /* BFD section pointer */
+ struct bfd_section *the_bfd_section;
+
+ /* Objfile this section is part of. */
+ struct objfile *objfile;
+
+ /* True if this "overlay section" is mapped into an "overlay region". */
+ int ovly_mapped;
+};
+
/* Declarations for functions defined in objfiles.c */
extern int entry_point_address_query (CORE_ADDR *entry_p);
extern void set_objfile_main_name (struct objfile *objfile,
const char *name, enum language lang);
+/* Find an integer type SIZE_IN_BYTES bytes in size from OF and return it.
+ UNSIGNED_P controls if the integer is unsigned or not. */
+extern struct type *objfile_int_type (struct objfile *of, int size_in_bytes,
+ bool unsigned_p);
+
extern void objfile_register_static_link
(struct objfile *objfile,
const struct block *block,
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