/* Symbol table definitions for GDB.
- Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010,
- 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1988-2004, 2007-2012 Free Software Foundation,
+ Inc.
This file is part of GDB.
#if !defined (SYMTAB_H)
#define SYMTAB_H 1
+#include "vec.h"
+#include "gdb_vecs.h"
+#include "gdbtypes.h"
+
/* Opaque declarations. */
struct ui_file;
struct frame_info;
struct axs_value;
struct agent_expr;
struct program_space;
+struct language_defn;
+struct probe;
+struct common_block;
/* Some of the structures in this file are space critical.
The space-critical structures are:
struct cplus_specific
{
- char *demangled_name;
+ const char *demangled_name;
};
/* Define a structure for the information that is common to all symbol types,
the mangled name and demangled name, this is the mangled
name. */
- char *name;
+ const char *name;
/* Value of the symbol. Which member of this union to use, and what
it means, depends on what kind of symbol this is and its
union
{
- /* The fact that this is a long not a LONGEST mainly limits the
- range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not
- sure that is a big deal. */
- long ivalue;
+ LONGEST ivalue;
struct block *block;
CORE_ADDR address;
+ /* A common block. Used with COMMON_BLOCK_DOMAIN. */
+
+ struct common_block *common_block;
+
/* For opaque typedef struct chain. */
struct symbol *chain;
currently used by Ada, Java, and Objective C. */
struct mangled_lang
{
- char *demangled_name;
+ const char *demangled_name;
}
mangled_lang;
extern void symbol_set_demangled_name (struct general_symbol_info *, char *,
struct objfile *);
-extern char *symbol_get_demangled_name (const struct general_symbol_info *);
+extern const char *symbol_get_demangled_name
+ (const struct general_symbol_info *);
extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *);
#define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue
#define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address
#define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes
+#define SYMBOL_VALUE_COMMON_BLOCK(symbol) (symbol)->ginfo.value.common_block
#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block
#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain
#define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language
#define SYMBOL_NATURAL_NAME(symbol) \
(symbol_natural_name (&(symbol)->ginfo))
-extern char *symbol_natural_name (const struct general_symbol_info *symbol);
+extern const char *symbol_natural_name
+ (const struct general_symbol_info *symbol);
/* Return SYMBOL's name from the point of view of the linker. In
languages like C++ where symbols may be mangled for ease of
that symbol. If no demangled name exists, return NULL. */
#define SYMBOL_DEMANGLED_NAME(symbol) \
(symbol_demangled_name (&(symbol)->ginfo))
-extern char *symbol_demangled_name (const struct general_symbol_info *symbol);
+extern const char *symbol_demangled_name
+ (const struct general_symbol_info *symbol);
/* Macro that returns a version of the name of a symbol that is
suitable for output. In C++ this is the "demangled" form of the
name if demangle is on and the "mangled" form of the name if
demangle is off. In other languages this is just the symbol name.
The result should never be NULL. Don't use this for internal
- purposes (e.g. storing in a hashtable): it's only suitable for
- output. */
+ purposes (e.g. storing in a hashtable): it's only suitable for output.
+
+ N.B. symbol may be anything with a ginfo member,
+ e.g., struct symbol or struct minimal_symbol. */
#define SYMBOL_PRINT_NAME(symbol) \
(demangle ? SYMBOL_NATURAL_NAME (symbol) : SYMBOL_LINKAGE_NAME (symbol))
-
-/* Macro that tests a symbol for a match against a specified name string.
- First test the unencoded name, then looks for and test a C++ encoded
- name if it exists. Note that whitespace is ignored while attempting to
- match a C++ encoded name, so that "foo::bar(int,long)" is the same as
- "foo :: bar (int, long)".
- Evaluates to zero if the match fails, or nonzero if it succeeds. */
-
-/* Macro that tests a symbol for a match against a specified name
- string. It tests against SYMBOL_NATURAL_NAME, and it ignores
- whitespace and trailing parentheses. (See strcmp_iw for details
- about its behavior.) */
-
-#define SYMBOL_MATCHES_NATURAL_NAME(symbol, name) \
- (strcmp_iw (SYMBOL_NATURAL_NAME (symbol), (name)) == 0)
+extern int demangle;
/* Macro that returns the name to be used when sorting and searching symbols.
In C++, Chill, and Java, we search for the demangled form of a name,
returns the same value (same pointer) as SYMBOL_LINKAGE_NAME. */
#define SYMBOL_SEARCH_NAME(symbol) \
(symbol_search_name (&(symbol)->ginfo))
-extern char *symbol_search_name (const struct general_symbol_info *);
+extern const char *symbol_search_name (const struct general_symbol_info *);
-/* Analogous to SYMBOL_MATCHES_NATURAL_NAME, but uses the search
- name. */
+/* Return non-zero if NAME matches the "search" name of SYMBOL.
+ Whitespace and trailing parentheses are ignored.
+ See strcmp_iw for details about its behavior. */
#define SYMBOL_MATCHES_SEARCH_NAME(symbol, name) \
(strcmp_iw (SYMBOL_SEARCH_NAME (symbol), (name)) == 0)
unsigned long size;
/* Which source file is this symbol in? Only relevant for mst_file_*. */
- char *filename;
+ const char *filename;
/* Classification type for this minimal symbol. */
ENUM_BITFIELD(minimal_symbol_type) type : 8;
+ /* Non-zero if this symbol was created by gdb.
+ Such symbols do not appear in the output of "info var|fun". */
+ unsigned int created_by_gdb : 1;
+
/* Two flag bits provided for the use of the target. */
unsigned int target_flag_1 : 1;
unsigned int target_flag_2 : 1;
+ /* Nonzero iff the size of the minimal symbol has been set.
+ Symbol size information can sometimes not be determined, because
+ the object file format may not carry that piece of information. */
+ unsigned int has_size : 1;
+
/* Minimal symbols with the same hash key are kept on a linked
list. This is the link. */
#define MSYMBOL_TARGET_FLAG_1(msymbol) (msymbol)->target_flag_1
#define MSYMBOL_TARGET_FLAG_2(msymbol) (msymbol)->target_flag_2
-#define MSYMBOL_SIZE(msymbol) (msymbol)->size
+#define MSYMBOL_SIZE(msymbol) ((msymbol)->size + 0)
+#define SET_MSYMBOL_SIZE(msymbol, sz) \
+ do \
+ { \
+ (msymbol)->size = sz; \
+ (msymbol)->has_size = 1; \
+ } while (0)
+#define MSYMBOL_HAS_SIZE(msymbol) ((msymbol)->has_size + 0)
#define MSYMBOL_TYPE(msymbol) (msymbol)->type
+#include "minsyms.h"
+
\f
/* Represent one symbol name; a variable, constant, function or typedef. */
/* LABEL_DOMAIN may be used for names of labels (for gotos). */
- LABEL_DOMAIN
+ LABEL_DOMAIN,
+
+ /* Fortran common blocks. Their naming must be separate from VAR_DOMAIN. */
+ COMMON_BLOCK_DOMAIN
} domain_enum;
/* Searching domains, used for `search_symbols'. Element numbers are
struct value *(*read_variable) (struct symbol * symbol,
struct frame_info * frame);
+ /* Read variable SYMBOL like read_variable at (callee) FRAME's function
+ entry. SYMBOL should be a function parameter, otherwise
+ NO_ENTRY_VALUE_ERROR will be thrown. */
+ struct value *(*read_variable_at_entry) (struct symbol *symbol,
+ struct frame_info *frame);
+
/* Return non-zero if we need a frame to find the value of the SYMBOL. */
int (*read_needs_frame) (struct symbol * symbol);
should be designated the primary, so that the blockvector
is relocated exactly once by objfile_relocate. */
- int primary;
+ unsigned int primary : 1;
+
+ /* Symtab has been compiled with both optimizations and debug info so that
+ GDB may stop skipping prologues as variables locations are valid already
+ at function entry points. */
+
+ unsigned int locations_valid : 1;
+
+ /* DWARF unwinder for this CU is valid even for epilogues (PC at the return
+ instruction). This is supported by GCC since 4.5.0. */
+
+ unsigned int epilogue_unwind_valid : 1;
/* The macro table for this symtab. Like the blockvector, this
may be shared between different symtabs --- and normally is for
struct objfile *objfile;
+ /* struct call_site entries for this compilation unit or NULL. */
+
+ htab_t call_site_htab;
+
+ /* If non-NULL, then this points to a NULL-terminated vector of
+ included symbol tables. When searching the static or global
+ block of this symbol table, the corresponding block of all
+ included symbol tables will also be searched. Note that this
+ list must be flattened -- the symbol reader is responsible for
+ ensuring that this vector contains the transitive closure of all
+ included symbol tables. */
+
+ struct symtab **includes;
+
+ /* If this is an included symbol table, this points to one includer
+ of the table. This user is considered the canonical symbol table
+ containing this one. An included symbol table may itself be
+ included by another. */
+
+ struct symtab *user;
};
#define BLOCKVECTOR(symtab) (symtab)->blockvector
/* External variables and functions for the objects described above. */
-/* See the comment in symfile.c about how current_objfile is used. */
-
-extern struct objfile *current_objfile;
-
/* True if we are nested inside psymtab_to_symtab. */
extern int currently_reading_symtab;
-/* From utils.c. */
-extern int demangle;
-extern int asm_demangle;
-
/* symtab.c lookup functions */
extern const char multiple_symbols_ask[];
extern struct symtab *lookup_symtab (const char *);
+/* An object of this type is passed as the 'is_a_field_of_this'
+ argument to lookup_symbol and lookup_symbol_in_language. */
+
+struct field_of_this_result
+{
+ /* The type in which the field was found. If this is NULL then the
+ symbol was not found in 'this'. If non-NULL, then one of the
+ other fields will be non-NULL as well. */
+
+ struct type *type;
+
+ /* If the symbol was found as an ordinary field of 'this', then this
+ is non-NULL and points to the particular field. */
+
+ struct field *field;
+
+ /* If the symbol was found as an function field of 'this', then this
+ is non-NULL and points to the particular field. */
+
+ struct fn_fieldlist *fn_field;
+};
+
/* lookup a symbol by name (optional block) in language. */
extern struct symbol *lookup_symbol_in_language (const char *,
const struct block *,
const domain_enum,
enum language,
- int *);
+ struct field_of_this_result *);
/* lookup a symbol by name (optional block, optional symtab)
in the current language. */
extern struct symbol *lookup_symbol (const char *, const struct block *,
- const domain_enum, int *);
+ const domain_enum,
+ struct field_of_this_result *);
/* A default version of lookup_symbol_nonlocal for use by languages
that can't think of anything better to do. */
const struct block *block,
const domain_enum domain);
+extern struct symbol *lookup_language_this (const struct language_defn *lang,
+ const struct block *block);
+
/* Lookup a symbol only in the file static scope of all the objfiles. */
struct symbol *lookup_static_symbol_aux (const char *name,
/* lookup a [struct, union, enum] by name, within a specified block. */
-extern struct type *lookup_struct (char *, struct block *);
+extern struct type *lookup_struct (const char *, const struct block *);
-extern struct type *lookup_union (char *, struct block *);
+extern struct type *lookup_union (const char *, const struct block *);
-extern struct type *lookup_enum (char *, struct block *);
+extern struct type *lookup_enum (const char *, const struct block *);
/* from blockframe.c: */
extern struct symbol *find_pc_sect_function (CORE_ADDR, struct obj_section *);
-extern int find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, char **name,
+extern int find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, const char **name,
CORE_ADDR *address,
CORE_ADDR *endaddr,
int *is_gnu_ifunc_p);
/* lookup function from address, return name, start addr and end addr. */
-extern int find_pc_partial_function (CORE_ADDR, char **, CORE_ADDR *,
+extern int find_pc_partial_function (CORE_ADDR, const char **, CORE_ADDR *,
CORE_ADDR *);
extern void clear_pc_function_cache (void);
#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled."
#endif
-/* Functions for dealing with the minimal symbol table, really a misc
- address<->symbol mapping for things we don't have debug symbols for. */
-
-extern void prim_record_minimal_symbol (const char *, CORE_ADDR,
- enum minimal_symbol_type,
- struct objfile *);
-
-extern struct minimal_symbol *prim_record_minimal_symbol_full
- (const char *, int, int, CORE_ADDR,
- enum minimal_symbol_type,
- int section, asection * bfd_section, struct objfile *);
-
-extern struct minimal_symbol *prim_record_minimal_symbol_and_info
- (const char *, CORE_ADDR,
- enum minimal_symbol_type,
- int section, asection * bfd_section, struct objfile *);
-
-extern unsigned int msymbol_hash_iw (const char *);
-
-extern unsigned int msymbol_hash (const char *);
-
-/* Compute the next hash value from previous HASH and the character C. This
- is only a GDB in-memory computed value with no external files compatibility
- requirements. */
-
-#define SYMBOL_HASH_NEXT(hash, c) ((hash) * 67 + (c) - 113)
-
-extern struct objfile * msymbol_objfile (struct minimal_symbol *sym);
-
-extern void
-add_minsym_to_hash_table (struct minimal_symbol *sym,
- struct minimal_symbol **table);
-
-extern struct minimal_symbol *lookup_minimal_symbol (const char *,
- const char *,
- struct objfile *);
-
-extern struct minimal_symbol *lookup_minimal_symbol_text (const char *,
- struct objfile *);
-
-struct minimal_symbol *lookup_minimal_symbol_solib_trampoline (const char *,
- struct objfile
- *);
-
-extern struct minimal_symbol *lookup_minimal_symbol_by_pc_name
- (CORE_ADDR, const char *, struct objfile *);
-
-extern struct minimal_symbol *lookup_minimal_symbol_by_pc (CORE_ADDR);
-
extern int in_gnu_ifunc_stub (CORE_ADDR pc);
/* Functions for resolving STT_GNU_IFUNC symbols which are implemented only
extern const struct gnu_ifunc_fns *gnu_ifunc_fns_p;
-extern struct minimal_symbol *
- lookup_minimal_symbol_and_objfile (const char *,
- struct objfile **);
-
-extern struct minimal_symbol
- *lookup_minimal_symbol_by_pc_section (CORE_ADDR, struct obj_section *);
-
-extern struct minimal_symbol
- *lookup_solib_trampoline_symbol_by_pc (CORE_ADDR);
-
extern CORE_ADDR find_solib_trampoline_target (struct frame_info *, CORE_ADDR);
-extern void init_minimal_symbol_collection (void);
-
-extern struct cleanup *make_cleanup_discard_minimal_symbols (void);
-
-extern void install_minimal_symbols (struct objfile *);
-
-/* Sort all the minimal symbols in OBJFILE. */
-
-extern void msymbols_sort (struct objfile *objfile);
-
struct symtab_and_line
{
/* The program space of this sal. */
CORE_ADDR end;
int explicit_pc;
int explicit_line;
+
+ /* The probe associated with this symtab_and_line. */
+ struct probe *probe;
};
extern void init_sal (struct symtab_and_line *sal);
extern void resolve_sal_pc (struct symtab_and_line *);
-/* Given a string, return the line specified by it. For commands like "list"
- and "breakpoint". */
-
-extern struct symtabs_and_lines decode_line_spec (char *, int);
-
-extern struct symtabs_and_lines decode_line_spec_1 (char *, int);
-
-/* Symmisc.c */
-
-void maintenance_print_symbols (char *, int);
-
-void maintenance_print_psymbols (char *, int);
-
-void maintenance_print_msymbols (char *, int);
-
-void maintenance_print_objfiles (char *, int);
-
-void maintenance_info_symtabs (char *, int);
-
-void maintenance_info_psymtabs (char *, int);
-
-void maintenance_check_symtabs (char *, int);
-
-/* maint.c */
-
-void maintenance_print_statistics (char *, int);
-
/* Symbol-reading stuff in symfile.c and solib.c. */
extern void clear_solib (void);
extern int identify_source_line (struct symtab *, int, int, CORE_ADDR);
-extern void print_source_lines (struct symtab *, int, int, int);
+/* Flags passed as 4th argument to print_source_lines. */
+
+enum print_source_lines_flags
+ {
+ /* Do not print an error message. */
+ PRINT_SOURCE_LINES_NOERROR = (1 << 0),
+
+ /* Print the filename in front of the source lines. */
+ PRINT_SOURCE_LINES_FILENAME = (1 << 1)
+ };
+
+extern void print_source_lines (struct symtab *, int, int,
+ enum print_source_lines_flags);
extern void forget_cached_source_info_for_objfile (struct objfile *);
extern void forget_cached_source_info (void);
extern void select_source_symtab (struct symtab *);
-extern char **default_make_symbol_completion_list_break_on
- (char *text, char *word, const char *break_on);
-extern char **default_make_symbol_completion_list (char *, char *);
-extern char **make_symbol_completion_list (char *, char *);
-extern char **make_symbol_completion_list_fn (struct cmd_list_element *,
- char *, char *);
+extern VEC (char_ptr) *default_make_symbol_completion_list_break_on
+ (char *text, char *word, const char *break_on,
+ enum type_code code);
+extern VEC (char_ptr) *default_make_symbol_completion_list (char *, char *,
+ enum type_code);
+extern VEC (char_ptr) *make_symbol_completion_list (char *, char *);
+extern VEC (char_ptr) *make_symbol_completion_type (char *, char *,
+ enum type_code);
+extern VEC (char_ptr) *make_symbol_completion_list_fn (struct cmd_list_element *,
+ char *, char *);
-extern char **make_file_symbol_completion_list (char *, char *, char *);
+extern VEC (char_ptr) *make_file_symbol_completion_list (char *,
+ char *, char *);
-extern char **make_source_files_completion_list (char *, char *);
+extern VEC (char_ptr) *make_source_files_completion_list (char *, char *);
/* symtab.c */
const char *name,
const domain_enum domain);
-extern struct symtabs_and_lines expand_line_sal (struct symtab_and_line sal);
-
/* Return 1 if the supplied producer string matches the ARM RealView
compiler (armcc). */
int producer_is_realview (const char *producer);
struct objfile *lookup_objfile_from_block (const struct block *block);
+extern int symtab_create_debug;
+
+extern int basenames_may_differ;
+
+int compare_filenames_for_search (const char *filename,
+ const char *search_name);
+
+int iterate_over_some_symtabs (const char *name,
+ const char *full_path,
+ const char *real_path,
+ int (*callback) (struct symtab *symtab,
+ void *data),
+ void *data,
+ struct symtab *first,
+ struct symtab *after_last);
+
+void iterate_over_symtabs (const char *name,
+ int (*callback) (struct symtab *symtab,
+ void *data),
+ void *data);
+
+DEF_VEC_I (CORE_ADDR);
+
+VEC (CORE_ADDR) *find_pcs_for_symtab_line (struct symtab *symtab, int line,
+ struct linetable_entry **best_entry);
+
+/* Callback for LA_ITERATE_OVER_SYMBOLS. The callback will be called
+ once per matching symbol SYM, with DATA being the argument of the
+ same name that was passed to LA_ITERATE_OVER_SYMBOLS. The callback
+ should return nonzero to indicate that LA_ITERATE_OVER_SYMBOLS
+ should continue iterating, or zero to indicate that the iteration
+ should end. */
+
+typedef int (symbol_found_callback_ftype) (struct symbol *sym, void *data);
+
+void iterate_over_symbols (const struct block *block, const char *name,
+ const domain_enum domain,
+ symbol_found_callback_ftype *callback,
+ void *data);
+
+struct cleanup *demangle_for_lookup (const char *name, enum language lang,
+ const char **result_name);
+
#endif /* !defined(SYMTAB_H) */
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