/* Definitions for reading symbol files into GDB.
- Copyright (C) 1990-2013 Free Software Foundation, Inc.
+ Copyright (C) 1990-2017 Free Software Foundation, Inc.
This file is part of GDB.
/* 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 "common/function-view.h"
/* Opaque declarations. */
struct target_section;
struct obj_section;
struct obstack;
struct block;
-struct probe;
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);
-/* 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
+struct other_sections
{
+ CORE_ADDR addr;
+ char *name;
- /* 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. */
-
- 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. */
-
- int size;
+ /* SECTINDEX must be valid for associated BFD or set to -1. */
+ int sectindex;
};
/* Define an array of addresses to accommodate non-contiguous dynamic
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];
+ struct other_sections other[1];
};
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,
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.
+ all newly-created symbol tables, passing CALLBACK 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);
+ 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. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK,
+ 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 symbol table in which the symbol is
+ 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 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);
+ 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,
+ int 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
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
+ /* 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.
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,
+ void (*map_matching_symbols) (struct objfile *,
+ const char *name, domain_enum domain,
+ int global,
int (*callback) (struct block *,
struct symbol *, void *),
void *data,
- symbol_compare_ftype *match,
+ symbol_name_match_type 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.
+ 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).
- 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.
+ Otherwise, if KIND does not match, this symbol is skipped.
- If NAME_MATCHER returns zero, then 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.
- Otherwise, this symbol's symbol table is expanded.
+ If SYMBOL_MATCHER returns false, then the symbol is skipped.
- DATA is user data that is passed unmodified to the callback
- functions. */
+ Otherwise, the symbol's symbol table is expanded. */
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
+ 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
- symbol table that contains a symbol whose address is closest to
+ compunit 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);
+ 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
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);
-
- /* Return 1 if the probe interface can evaluate the arguments of probe
- PROBE, zero otherwise. This function can be probe-specific, informing
- whether only the arguments of PROBE can be evaluated, of generic,
- informing whether the probe interface is able to evaluate any kind of
- argument. If you provide an implementation of sym_get_probes, you must
- implement this method as well. */
- int (*can_evaluate_probe_arguments) (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);
+ /* If non-NULL, return a reference to vector of probe objects. */
+ const std::vector<probe *> &(*sym_get_probes) (struct objfile *);
};
/* Structure to keep track of symbol reading functions for various
struct sym_fns
{
-
- /* 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. */
file we are reading. SYMFILE_FLAGS are the flags passed to
symbol_file_add & co. */
- void (*sym_read) (struct objfile *, int);
+ 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
void (*sym_finish) (struct objfile *);
+
/* 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. */
+ 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. */
void (*sym_offsets) (struct objfile *, const struct section_addr_info *);
the line table cannot be read while processing the debugging
information. */
- void (*sym_read_linetable) (void);
+ 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
extern bfd_byte *default_symfile_relocate (struct objfile *objfile,
asection *sectp, bfd_byte *buf);
-extern struct symtab *allocate_symtab (const char *, struct objfile *)
+extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *)
ATTRIBUTE_NONNULL (1);
-extern void add_symtab_fns (const struct sym_fns *);
-
-/* This enum encodes bit-flags passed as ADD_FLAGS parameter to
- symbol_file_add, etc. */
+extern struct compunit_symtab *allocate_compunit_symtab (struct objfile *,
+ const char *)
+ ATTRIBUTE_NONNULL (1);
-enum symfile_add_flags
- {
- /* Be chatty about what you are doing. */
- SYMFILE_VERBOSE = 1 << 1,
+extern void add_compunit_symtab_to_objfile (struct compunit_symtab *cu);
- /* This is the main symbol file (as opposed to symbol file for dynamically
- loaded code). */
- SYMFILE_MAINLINE = 1 << 2,
+extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *);
- /* Do not call breakpoint_re_set when adding this symbol file. */
- SYMFILE_DEFER_BP_RESET = 1 << 3,
+extern void clear_symtab_users (symfile_add_flags add_flags);
- /* Do not immediately read symbols for this file. By default,
- symbols are read when the objfile is created. */
- SYMFILE_NO_READ = 1 << 4
- };
+extern enum language deduce_language_from_filename (const char *);
-extern void new_symfile_objfile (struct objfile *, int);
+/* 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 struct objfile *symbol_file_add (char *, int,
- struct section_addr_info *, int);
+extern struct objfile *symbol_file_add (const char *, symfile_add_flags,
+ struct section_addr_info *, objfile_flags);
-extern struct objfile *symbol_file_add_from_bfd (bfd *, int,
+extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags,
struct section_addr_info *,
- int, struct objfile *parent);
+ objfile_flags, struct objfile *parent);
-extern void symbol_file_add_separate (bfd *, int, struct objfile *);
+extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags,
+ struct objfile *);
extern char *find_separate_debug_file_by_debuglink (struct objfile *);
extern void find_lowest_section (bfd *, asection *, void *);
-extern bfd *symfile_bfd_open (char *);
+extern gdb_bfd_ref_ptr symfile_bfd_open (const char *);
-extern bfd *gdb_bfd_open_maybe_remote (const char *);
+extern int get_section_index (struct objfile *, const 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
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);
+extern void symbol_file_add_main (const char *args,
+ symfile_add_flags add_flags);
/* Clear GDB symbol tables. */
extern void symbol_file_clear (int from_tty);
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);
+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);
/* From dwarf2read.c */
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;
asection **, const gdb_byte **,
bfd_size_type *);
-extern int dwarf2_initialize_objfile (struct objfile *);
+/* 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 *);
extern void dwarf2_build_frame_info (struct objfile *);
/* From mdebugread.c */
-extern void mdebug_build_psymtabs (struct objfile *,
+extern void mdebug_build_psymtabs (minimal_symbol_reader &,
+ struct objfile *,
const struct ecoff_debug_swap *,
struct ecoff_debug_info *);
/* From minidebug.c. */
-extern bfd *find_separate_debug_file_in_section (struct objfile *);
+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 int separate_debug_file_debug;
#endif /* !defined(SYMFILE_H) */