/* Symbol table definitions for GDB.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include <array>
#include <vector>
#include <string>
-#include "gdb_vecs.h"
+#include <set>
+#include "gdbsupport/gdb_vecs.h"
#include "gdbtypes.h"
-#include "common/enum-flags.h"
-#include "common/function-view.h"
-#include "common/gdb_optional.h"
+#include "gdb_obstack.h"
+#include "gdb_regex.h"
+#include "gdbsupport/enum-flags.h"
+#include "gdbsupport/function-view.h"
+#include "gdbsupport/gdb_optional.h"
+#include "gdbsupport/gdb_string_view.h"
+#include "gdbsupport/next-iterator.h"
#include "completer.h"
+#include "gdb-demangle.h"
/* Opaque declarations. */
struct ui_file;
namespace/module/package. */
FULL,
+ /* Search name matching. This is like FULL, but the search name did
+ not come from the user; instead it is already a search name
+ retrieved from a search_name () call.
+ For Ada, this avoids re-encoding an already-encoded search name
+ (which would potentially incorrectly lowercase letters in the
+ linkage/search name that should remain uppercase). For C++, it
+ avoids trying to demangle a name we already know is
+ demangled. */
+ SEARCH_NAME,
+
/* Expression matching. The same as FULL matching in most
languages. The same as WILD matching in Ada. */
EXPRESSION,
otherwise. If non-NULL, store the matching results in MATCH. */
bool matches (const char *symbol_search_name,
symbol_name_match_type match_type,
- completion_match *match) const;
+ completion_match_result *comp_match_res) const;
/* The Ada-encoded lookup name. */
const std::string &lookup_name () const
bool standard_p () const
{ return m_standard_p; }
- private:
+ /* Return true if doing a verbatim match. */
+ bool verbatim_p () const
+ { return m_verbatim_p; }
+
+private:
/* The Ada-encoded lookup name. */
std::string m_encoded_name;
SYMBOL_SEARCH_NAME should be a symbol's "search" name.
- On success and if non-NULL, MATCH is set to point to the symbol
- name as should be presented to the user as a completion match list
- element. In most languages, this is the same as the symbol's
- search name, but in some, like Ada, the display name is dynamically
- computed within the comparison routine. */
+ On success and if non-NULL, COMP_MATCH_RES->match is set to point
+ to the symbol name as should be presented to the user as a
+ completion match list element. In most languages, this is the same
+ as the symbol's search name, but in some, like Ada, the display
+ name is dynamically computed within the comparison routine.
+
+ Also, on success and if non-NULL, COMP_MATCH_RES->match_for_lcd
+ points the part of SYMBOL_SEARCH_NAME that was considered to match
+ LOOKUP_NAME. E.g., in C++, in linespec/wild mode, if the symbol is
+ "foo::function()" and LOOKUP_NAME is "function(", MATCH_FOR_LCD
+ points to "function()" inside SYMBOL_SEARCH_NAME. */
typedef bool (symbol_name_matcher_ftype)
(const char *symbol_search_name,
const lookup_name_info &lookup_name,
- completion_match *match);
+ completion_match_result *comp_match_res);
/* Some of the structures in this file are space critical.
The space-critical structures are:
struct general_symbol_info
{
+ /* Short version as to when to use which name accessor:
+ Use natural_name () to refer to the name of the symbol in the original
+ source code. Use linkage_name () if you want to know what the linker
+ thinks the symbol's name is. Use print_name () for output. Use
+ demangled_name () if you specifically need to know whether natural_name ()
+ and linkage_name () are different. */
+
+ const char *linkage_name () const
+ { return name; }
+
+ /* Return SYMBOL's "natural" name, i.e. the name that it was called in
+ the original source code. In languages like C++ where symbols may
+ be mangled for ease of manipulation by the linker, this is the
+ demangled name. */
+ const char *natural_name () const;
+
+ /* 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. */
+ const char *print_name () const
+ { return demangle ? natural_name () : linkage_name (); }
+
+ /* Return the demangled name for a symbol based on the language for
+ that symbol. If no demangled name exists, return NULL. */
+ const char *demangled_name () const;
+
+ /* Returns the name to be used when sorting and searching symbols.
+ In C++, we search for the demangled form of a name,
+ and so sort symbols accordingly. In Ada, however, we search by mangled
+ name. If there is no distinct demangled name, then this
+ returns the same value (same pointer) as linkage_name (). */
+ const char *search_name () const;
+
+ /* Set just the linkage name of a symbol; do not try to demangle
+ it. Used for constructs which do not have a mangled name,
+ e.g. struct tags. Unlike SYMBOL_SET_NAMES, linkage_name must
+ be terminated and either already on the objfile's obstack or
+ permanently allocated. */
+ void set_linkage_name (const char *linkage_name)
+ { name = linkage_name; }
+
+ enum language language () const
+ { return m_language; }
+
+ /* Initializes the language dependent portion of a symbol
+ depending upon the language for the symbol. */
+ void set_language (enum language language, struct obstack *obstack);
+
/* Name of the symbol. This is a required field. Storage for the
name is allocated on the objfile_obstack for the associated
objfile. For languages like C++ that make a distinction between
This is used to select one of the fields from the language specific
union above. */
- ENUM_BITFIELD(language) language : LANGUAGE_BITS;
+ ENUM_BITFIELD(language) m_language : LANGUAGE_BITS;
/* This is only used by Ada. If set, then the 'demangled_name' field
of language_specific is valid. Otherwise, the 'obstack' field is
extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *);
-/* Note that all the following SYMBOL_* macros are used with the
- SYMBOL argument being either a partial symbol or
- a full symbol. Both types have a ginfo field. In particular
- the SYMBOL_SET_LANGUAGE, SYMBOL_DEMANGLED_NAME, etc.
- macros cannot be entirely substituted by
- functions, unless the callers are changed to pass in the ginfo
- field only, instead of the SYMBOL parameter. */
-
-#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_SECTION(symbol) (symbol)->ginfo.section
+/* Return the address of SYM. The MAYBE_COPIED flag must be set on
+ SYM. If SYM appears in the main program's minimal symbols, then
+ that minsym's address is returned; otherwise, SYM's address is
+ returned. This should generally only be used via the
+ SYMBOL_VALUE_ADDRESS macro. */
+
+extern CORE_ADDR get_symbol_address (const struct symbol *sym);
+
+/* Note that these macros only work with symbol, not partial_symbol. */
+
+#define SYMBOL_VALUE(symbol) (symbol)->value.ivalue
+#define SYMBOL_VALUE_ADDRESS(symbol) \
+ (((symbol)->maybe_copied) ? get_symbol_address (symbol) \
+ : ((symbol)->value.address))
+#define SET_SYMBOL_VALUE_ADDRESS(symbol, new_value) \
+ ((symbol)->value.address = (new_value))
+#define SYMBOL_VALUE_BYTES(symbol) (symbol)->value.bytes
+#define SYMBOL_VALUE_COMMON_BLOCK(symbol) (symbol)->value.common_block
+#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->value.block
+#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->value.chain
+#define SYMBOL_SECTION(symbol) (symbol)->section
#define SYMBOL_OBJ_SECTION(objfile, symbol) \
- (((symbol)->ginfo.section >= 0) \
- ? (&(((objfile)->sections)[(symbol)->ginfo.section])) \
+ (((symbol)->section >= 0) \
+ ? (&(((objfile)->sections)[(symbol)->section])) \
: NULL)
-/* Initializes the language dependent portion of a symbol
- depending upon the language for the symbol. */
-#define SYMBOL_SET_LANGUAGE(symbol,language,obstack) \
- (symbol_set_language (&(symbol)->ginfo, (language), (obstack)))
-extern void symbol_set_language (struct general_symbol_info *symbol,
- enum language language,
- struct obstack *obstack);
-
-/* Set just the linkage name of a symbol; do not try to demangle
- it. Used for constructs which do not have a mangled name,
- e.g. struct tags. Unlike SYMBOL_SET_NAMES, linkage_name must
- be terminated and either already on the objfile's obstack or
- permanently allocated. */
-#define SYMBOL_SET_LINKAGE_NAME(symbol,linkage_name) \
- (symbol)->ginfo.name = (linkage_name)
+/* Try to determine the demangled name for a symbol, based on the
+ language of that symbol. If the language is set to language_auto,
+ it will attempt to find any demangling algorithm that works and
+ then set the language appropriately. The returned name is allocated
+ by the demangler and should be xfree'd. */
+
+extern char *symbol_find_demangled_name (struct general_symbol_info *gsymbol,
+ const char *mangled);
/* Set the linkage and natural names of a symbol, by demangling
- the linkage name. */
-#define SYMBOL_SET_NAMES(symbol,linkage_name,len,copy_name,objfile) \
- symbol_set_names (&(symbol)->ginfo, linkage_name, len, copy_name, objfile)
+ the linkage name. If linkage_name may not be nullterminated,
+ copy_name must be set to true. */
+#define SYMBOL_SET_NAMES(symbol,linkage_name,copy_name,objfile) \
+ symbol_set_names ((symbol), linkage_name, copy_name, \
+ (objfile)->per_bfd)
extern void symbol_set_names (struct general_symbol_info *symbol,
- const char *linkage_name, int len, int copy_name,
- struct objfile *objfile);
-
-/* Now come lots of name accessor macros. Short version as to when to
- use which: Use SYMBOL_NATURAL_NAME to refer to the name of the
- symbol in the original source code. Use SYMBOL_LINKAGE_NAME if you
- want to know what the linker thinks the symbol's name is. Use
- SYMBOL_PRINT_NAME for output. Use SYMBOL_DEMANGLED_NAME if you
- specifically need to know whether SYMBOL_NATURAL_NAME and
- SYMBOL_LINKAGE_NAME are different. */
-
-/* Return SYMBOL's "natural" name, i.e. the name that it was called in
- the original source code. In languages like C++ where symbols may
- be mangled for ease of manipulation by the linker, this is the
- demangled name. */
-
-#define SYMBOL_NATURAL_NAME(symbol) \
- (symbol_natural_name (&(symbol)->ginfo))
-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
- manipulation by the linker, this is the mangled name; otherwise,
- it's the same as SYMBOL_NATURAL_NAME. */
-
-#define SYMBOL_LINKAGE_NAME(symbol) (symbol)->ginfo.name
-
-/* Return the demangled name for a symbol based on the language for
- that symbol. If no demangled name exists, return NULL. */
-#define SYMBOL_DEMANGLED_NAME(symbol) \
- (symbol_demangled_name (&(symbol)->ginfo))
-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.
-
- 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))
-extern int demangle;
-
-/* Macro that returns the name to be used when sorting and searching symbols.
- In C++, we search for the demangled form of a name,
- and so sort symbols accordingly. In Ada, however, we search by mangled
- name. If there is no distinct demangled name, then SYMBOL_SEARCH_NAME
- returns the same value (same pointer) as SYMBOL_LINKAGE_NAME. */
-#define SYMBOL_SEARCH_NAME(symbol) \
- (symbol_search_name (&(symbol)->ginfo))
-extern const char *symbol_search_name (const struct general_symbol_info *ginfo);
+ gdb::string_view linkage_name, bool copy_name,
+ struct objfile_per_bfd_storage *per_bfd,
+ gdb::optional<hashval_t> hash
+ = gdb::optional<hashval_t> ());
/* Return true if NAME matches the "search" name of SYMBOL, according
to the symbol's language. */
#define SYMBOL_MATCHES_SEARCH_NAME(symbol, name) \
- symbol_matches_search_name (&(symbol)->ginfo, (name))
+ symbol_matches_search_name ((symbol), (name))
/* Helper for SYMBOL_MATCHES_SEARCH_NAME that works with both symbols
and psymbols. */
{
mst_unknown = 0, /* Unknown type, the default */
mst_text, /* Generally executable instructions */
- mst_text_gnu_ifunc, /* Executable code returning address
+
+ /* A GNU ifunc symbol, in the .text section. GDB uses to know
+ whether the user is setting a breakpoint on a GNU ifunc function,
+ and thus GDB needs to actually set the breakpoint on the target
+ function. It is also used to know whether the program stepped
+ into an ifunc resolver -- the resolver may get a separate
+ symbol/alias under a different name, but it'll have the same
+ address as the ifunc symbol. */
+ mst_text_gnu_ifunc, /* Executable code returning address
of executable code */
+
+ /* A GNU ifunc function descriptor symbol, in a data section
+ (typically ".opd"). Seen on architectures that use function
+ descriptors, like PPC64/ELFv1. In this case, this symbol's value
+ is the address of the descriptor. There'll be a corresponding
+ mst_text_gnu_ifunc synthetic symbol for the text/entry
+ address. */
+ mst_data_gnu_ifunc, /* Executable code returning address
+ of executable code */
+
mst_slot_got_plt, /* GOT entries for .plt sections */
mst_data, /* Generally initialized data */
mst_bss, /* Generally uninitialized data */
between names and addresses, and vice versa. They are also sometimes
used to figure out what full symbol table entries need to be read in. */
-struct minimal_symbol
+struct minimal_symbol : public general_symbol_info
{
-
- /* The general symbol info required for all types of symbols.
-
- The SYMBOL_VALUE_ADDRESS contains the address that this symbol
- corresponds to. */
-
- struct general_symbol_info mginfo;
-
/* Size of this symbol. dbx_end_psymtab in dbxread.c uses this
information to calculate the end of the partial symtab based on the
address of the last symbol plus the size of the last symbol. */
the object file format may not carry that piece of information. */
unsigned int has_size : 1;
+ /* For data symbols only, if this is set, then the symbol might be
+ subject to copy relocation. In this case, a minimal symbol
+ matching the symbol's linkage name is first looked for in the
+ main objfile. If found, then that address is used; otherwise the
+ address in this symbol is used. */
+
+ unsigned maybe_copied : 1;
+
+ /* Non-zero if this symbol ever had its demangled name set (even if
+ it was set to NULL). */
+ unsigned int name_set : 1;
+
/* Minimal symbols with the same hash key are kept on a linked
list. This is the link. */
the `next' pointer for the demangled hash table. */
struct minimal_symbol *demangled_hash_next;
+
+ /* True if this symbol is of some data type. */
+
+ bool data_p () const;
+
+ /* True if MSYMBOL is of some text type. */
+
+ bool text_p () const;
};
+/* Return the address of MINSYM, which comes from OBJF. The
+ MAYBE_COPIED flag must be set on MINSYM. If MINSYM appears in the
+ main program's minimal symbols, then that minsym's address is
+ returned; otherwise, MINSYM's address is returned. This should
+ generally only be used via the MSYMBOL_VALUE_ADDRESS macro. */
+
+extern CORE_ADDR get_msymbol_address (struct objfile *objf,
+ const struct minimal_symbol *minsym);
+
#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 + 0)
#define MSYMBOL_HAS_SIZE(msymbol) ((msymbol)->has_size + 0)
#define MSYMBOL_TYPE(msymbol) (msymbol)->type
-#define MSYMBOL_VALUE(symbol) (symbol)->mginfo.value.ivalue
+#define MSYMBOL_VALUE(symbol) (symbol)->value.ivalue
/* The unrelocated address of the minimal symbol. */
-#define MSYMBOL_VALUE_RAW_ADDRESS(symbol) ((symbol)->mginfo.value.address + 0)
+#define MSYMBOL_VALUE_RAW_ADDRESS(symbol) ((symbol)->value.address + 0)
/* The relocated address of the minimal symbol, using the section
offsets from OBJFILE. */
#define MSYMBOL_VALUE_ADDRESS(objfile, symbol) \
- ((symbol)->mginfo.value.address \
- + ANOFFSET ((objfile)->section_offsets, ((symbol)->mginfo.section)))
+ (((symbol)->maybe_copied) ? get_msymbol_address (objfile, symbol) \
+ : ((symbol)->value.address \
+ + ANOFFSET ((objfile)->section_offsets, ((symbol)->section))))
/* For a bound minsym, we can easily compute the address directly. */
#define BMSYMBOL_VALUE_ADDRESS(symbol) \
MSYMBOL_VALUE_ADDRESS ((symbol).objfile, (symbol).minsym)
#define SET_MSYMBOL_VALUE_ADDRESS(symbol, new_value) \
- ((symbol)->mginfo.value.address = (new_value))
-#define MSYMBOL_VALUE_BYTES(symbol) (symbol)->mginfo.value.bytes
-#define MSYMBOL_BLOCK_VALUE(symbol) (symbol)->mginfo.value.block
-#define MSYMBOL_VALUE_CHAIN(symbol) (symbol)->mginfo.value.chain
-#define MSYMBOL_LANGUAGE(symbol) (symbol)->mginfo.language
-#define MSYMBOL_SECTION(symbol) (symbol)->mginfo.section
+ ((symbol)->value.address = (new_value))
+#define MSYMBOL_VALUE_BYTES(symbol) (symbol)->value.bytes
+#define MSYMBOL_BLOCK_VALUE(symbol) (symbol)->value.block
+#define MSYMBOL_VALUE_CHAIN(symbol) (symbol)->value.chain
+#define MSYMBOL_SECTION(symbol) (symbol)->section
#define MSYMBOL_OBJ_SECTION(objfile, symbol) \
- (((symbol)->mginfo.section >= 0) \
- ? (&(((objfile)->sections)[(symbol)->mginfo.section])) \
+ (((symbol)->section >= 0) \
+ ? (&(((objfile)->sections)[(symbol)->section])) \
: NULL)
-#define MSYMBOL_NATURAL_NAME(symbol) \
- (symbol_natural_name (&(symbol)->mginfo))
-#define MSYMBOL_LINKAGE_NAME(symbol) (symbol)->mginfo.name
-#define MSYMBOL_PRINT_NAME(symbol) \
- (demangle ? MSYMBOL_NATURAL_NAME (symbol) : MSYMBOL_LINKAGE_NAME (symbol))
-#define MSYMBOL_DEMANGLED_NAME(symbol) \
- (symbol_demangled_name (&(symbol)->mginfo))
-#define MSYMBOL_SET_LANGUAGE(symbol,language,obstack) \
- (symbol_set_language (&(symbol)->mginfo, (language), (obstack)))
-#define MSYMBOL_SEARCH_NAME(symbol) \
- (symbol_search_name (&(symbol)->mginfo))
-#define MSYMBOL_SET_NAMES(symbol,linkage_name,len,copy_name,objfile) \
- symbol_set_names (&(symbol)->mginfo, linkage_name, len, copy_name, objfile)
-
#include "minsyms.h"
\f
extern const char *domain_name (domain_enum);
-/* Searching domains, used for `search_symbols'. Element numbers are
+/* Searching domains, used when searching for symbols. Element numbers are
hardcoded in GDB, check all enum uses before changing it. */
enum search_domain
/* All defined types */
TYPES_DOMAIN = 2,
+ /* All modules. */
+ MODULES_DOMAIN = 3,
+
/* Any type. */
- ALL_DOMAIN = 3
+ ALL_DOMAIN = 4
};
extern const char *search_domain_name (enum search_domain);
The generated C code must assign the location to a local
variable; this variable's name is RESULT_NAME. */
- void (*generate_c_location) (struct symbol *symbol, string_file &stream,
+ void (*generate_c_location) (struct symbol *symbol, string_file *stream,
struct gdbarch *gdbarch,
unsigned char *registers_used,
CORE_ADDR pc, const char *result_name);
register, the CFA as defined by DWARF unwinding information, ...
So this specific method is supposed to compute the frame base address such
- as for nested fuctions, the static link computes the same address. For
+ as for nested functions, the static link computes the same address. For
instance, considering DWARF debugging information, the static link is
computed with DW_AT_static_link and this method must be used to compute
the corresponding DW_AT_frame_base attribute. */
/* This structure is space critical. See space comments at the top. */
-struct symbol
+struct symbol : public general_symbol_info, public allocate_on_obstack
{
-
- /* The general symbol info required for all types of symbols. */
-
- struct general_symbol_info ginfo;
+ symbol ()
+ /* Class-initialization of bitfields is only allowed in C++20. */
+ : domain (UNDEF_DOMAIN),
+ aclass_index (0),
+ is_objfile_owned (0),
+ is_argument (0),
+ is_inlined (0),
+ maybe_copied (0),
+ subclass (SYMBOL_NONE)
+ {
+ /* We can't use an initializer list for members of a base class, and
+ general_symbol_info needs to stay a POD type. */
+ name = nullptr;
+ value.ivalue = 0;
+ language_specific.obstack = nullptr;
+ m_language = language_unknown;
+ ada_mangled = 0;
+ section = 0;
+ /* GCC 4.8.5 (on CentOS 7) does not correctly compile class-
+ initialization of unions, so we initialize it manually here. */
+ owner.symtab = nullptr;
+ }
/* Data type of value */
- struct type *type;
+ struct type *type = nullptr;
/* The owner of this symbol.
Which one to use is defined by symbol.is_objfile_owned. */
unsigned int aclass_index : SYMBOL_ACLASS_BITS;
/* If non-zero then symbol is objfile-owned, use owner.symtab.
- Otherwise symbol is arch-owned, use owner.arch. */
+ Otherwise symbol is arch-owned, use owner.arch. */
unsigned int is_objfile_owned : 1;
/* Whether this is an inlined function (class LOC_BLOCK only). */
unsigned is_inlined : 1;
+ /* For LOC_STATIC only, if this is set, then the symbol might be
+ subject to copy relocation. In this case, a minimal symbol
+ matching the symbol's linkage name is first looked for in the
+ main objfile. If found, then that address is used; otherwise the
+ address in this symbol is used. */
+
+ unsigned maybe_copied : 1;
+
/* The concrete type of this symbol. */
ENUM_BITFIELD (symbol_subclass_kind) subclass : 2;
to debug files longer than 64K lines? What about machine
generated programs? */
- unsigned short line;
+ unsigned short line = 0;
/* An arbitrary data pointer, allowing symbol readers to record
additional information on a per-symbol basis. Note that this data
to add a magic symbol to the block containing this information,
or to have a generic debug info annotation slot for symbols. */
- void *aux_value;
+ void *aux_value = nullptr;
- struct symbol *hash_next;
+ struct symbol *hash_next = nullptr;
};
/* Several lookup functions return both a symbol and the block in which the
extern const struct symbol_impl *symbol_impls;
-/* For convenience. All fields are NULL. This means "there is no
- symbol". */
-extern const struct block_symbol null_block_symbol;
-
/* Note: There is no accessor macro for symbol.owner because it is
"private". */
struct template_symbol : public symbol
{
/* The number of template arguments. */
- int n_template_arguments;
+ int n_template_arguments = 0;
/* The template arguments. This is an array with
N_TEMPLATE_ARGUMENTS elements. */
- struct symbol **template_arguments;
+ struct symbol **template_arguments = nullptr;
};
/* A symbol that represents a Rust virtual table object. */
{
/* The concrete type for which this vtable was created; that is, in
"impl Trait for Type", this is "Type". */
- struct type *concrete_type;
+ struct type *concrete_type = nullptr;
};
\f
const char *filename;
- /* Total number of lines found in source file. */
-
- int nlines;
-
- /* line_charpos[N] is the position of the (N-1)th line of the
- source file. "position" means something we can lseek() to; it
- is not guaranteed to be useful any other way. */
-
- int *line_charpos;
-
/* Language of this source file. */
enum language language;
#define SYMTAB_DIRNAME(symtab) \
COMPUNIT_DIRNAME (SYMTAB_COMPUNIT (symtab))
-typedef struct symtab *symtab_ptr;
-DEF_VEC_P (symtab_ptr);
-
/* Compunit symtabs contain the actual "symbol table", aka blockvector, as well
as the list of all source files (what gdb has historically associated with
the term "symtab").
#define COMPUNIT_CALL_SITE_HTAB(cust) ((cust)->call_site_htab)
#define COMPUNIT_MACRO_TABLE(cust) ((cust)->macro_table)
-/* Iterate over all file tables (struct symtab) within a compunit. */
+/* A range adapter to allowing iterating over all the file tables
+ within a compunit. */
-#define ALL_COMPUNIT_FILETABS(cu, s) \
- for ((s) = (cu) -> filetabs; (s) != NULL; (s) = (s) -> next)
+struct compunit_filetabs : public next_adapter<struct symtab>
+{
+ compunit_filetabs (struct compunit_symtab *cu)
+ : next_adapter<struct symtab> (cu->filetabs)
+ {
+ }
+};
/* Return the primary symtab of CUST. */
extern enum language compunit_language (const struct compunit_symtab *cust);
-typedef struct compunit_symtab *compunit_symtab_ptr;
-DEF_VEC_P (compunit_symtab_ptr);
-
\f
/* The virtual function table is now an array of structures which have the
const char *multiple_symbols_select_mode (void);
-int symbol_matches_domain (enum language symbol_language,
- domain_enum symbol_domain,
- domain_enum domain);
+bool symbol_matches_domain (enum language symbol_language,
+ domain_enum symbol_domain,
+ domain_enum domain);
/* lookup a symbol table by source file name. */
const domain_enum,
struct field_of_this_result *);
+/* Find the definition for a specified symbol search name in domain
+ DOMAIN, visible from lexical block BLOCK if non-NULL or from
+ global/static blocks if BLOCK is NULL. The passed-in search name
+ should not come from the user; instead it should already be a
+ search name as retrieved from a search_name () call. See definition of
+ symbol_name_match_type::SEARCH_NAME. Returns the struct symbol
+ pointer, or NULL if no symbol is found. The symbol's section is
+ fixed up if necessary. */
+
+extern struct block_symbol lookup_symbol_search_name (const char *search_name,
+ const struct block *block,
+ domain_enum domain);
+
/* A default version of lookup_symbol_nonlocal for use by languages
that can't think of anything better to do.
This implements the C lookup rules. */
extern struct symbol *
lookup_symbol_in_block (const char *name,
+ symbol_name_match_type match_type,
const struct block *block,
const domain_enum domain);
/* from blockframe.c: */
-/* lookup the function symbol corresponding to the address. */
+/* lookup the function symbol corresponding to the address. The
+ return value will not be an inlined function; the containing
+ function will be returned instead. */
extern struct symbol *find_pc_function (CORE_ADDR);
-/* lookup the function corresponding to the address and section. */
+/* lookup the function corresponding to the address and section. The
+ return value will not be an inlined function; the containing
+ function will be returned instead. */
extern struct symbol *find_pc_sect_function (CORE_ADDR, struct obj_section *);
+/* lookup the function symbol corresponding to the address and
+ section. The return value will be the closest enclosing function,
+ which might be an inline function. */
+
+extern struct symbol *find_pc_sect_containing_function
+ (CORE_ADDR pc, struct obj_section *section);
+
/* Find the symbol at the given address. Returns NULL if no symbol
found. Only exact matches for ADDRESS are considered. */
extern struct symbol *find_symbol_at_address (CORE_ADDR);
-extern int find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, const char **name,
+/* Finds the "function" (text symbol) that is smaller than PC but
+ greatest of all of the potential text symbols in SECTION. Sets
+ *NAME and/or *ADDRESS conditionally if that pointer is non-null.
+ If ENDADDR is non-null, then set *ENDADDR to be the end of the
+ function (exclusive). If the optional parameter BLOCK is non-null,
+ then set *BLOCK to the address of the block corresponding to the
+ function symbol, if such a symbol could be found during the lookup;
+ nullptr is used as a return value for *BLOCK if no block is found.
+ This function either succeeds or fails (not halfway succeeds). If
+ it succeeds, it sets *NAME, *ADDRESS, and *ENDADDR to real
+ information and returns true. If it fails, it sets *NAME, *ADDRESS
+ and *ENDADDR to zero and returns false.
+
+ If the function in question occupies non-contiguous ranges,
+ *ADDRESS and *ENDADDR are (subject to the conditions noted above) set
+ to the start and end of the range in which PC is found. Thus
+ *ADDRESS <= PC < *ENDADDR with no intervening gaps (in which ranges
+ from other functions might be found).
+
+ This property allows find_pc_partial_function to be used (as it had
+ been prior to the introduction of non-contiguous range support) by
+ various tdep files for finding a start address and limit address
+ for prologue analysis. This still isn't ideal, however, because we
+ probably shouldn't be doing prologue analysis (in which
+ instructions are scanned to determine frame size and stack layout)
+ for any range that doesn't contain the entry pc. Moreover, a good
+ argument can be made that prologue analysis ought to be performed
+ starting from the entry pc even when PC is within some other range.
+ This might suggest that *ADDRESS and *ENDADDR ought to be set to the
+ limits of the entry pc range, but that will cause the
+ *ADDRESS <= PC < *ENDADDR condition to be violated; many of the
+ callers of find_pc_partial_function expect this condition to hold.
+
+ Callers which require the start and/or end addresses for the range
+ containing the entry pc should instead call
+ find_function_entry_range_from_pc. */
+
+extern bool find_pc_partial_function (CORE_ADDR pc, const char **name,
+ CORE_ADDR *address, CORE_ADDR *endaddr,
+ const struct block **block = nullptr);
+
+/* Like find_pc_partial_function, above, but *ADDRESS and *ENDADDR are
+ set to start and end addresses of the range containing the entry pc.
+
+ Note that it is not necessarily the case that (for non-NULL ADDRESS
+ and ENDADDR arguments) the *ADDRESS <= PC < *ENDADDR condition will
+ hold.
+
+ See comment for find_pc_partial_function, above, for further
+ explanation. */
+
+extern bool find_function_entry_range_from_pc (CORE_ADDR pc,
+ const char **name,
CORE_ADDR *address,
- CORE_ADDR *endaddr,
- int *is_gnu_ifunc_p);
+ CORE_ADDR *endaddr);
-/* lookup function from address, return name, start addr and end addr. */
+/* Return the type of a function with its first instruction exactly at
+ the PC address. Return NULL otherwise. */
-extern int find_pc_partial_function (CORE_ADDR, const char **, CORE_ADDR *,
- CORE_ADDR *);
+extern struct type *find_function_type (CORE_ADDR pc);
+
+/* See if we can figure out the function's actual type from the type
+ that the resolver returns. RESOLVER_FUNADDR is the address of the
+ ifunc resolver. */
+
+extern struct type *find_gnu_ifunc_target_type (CORE_ADDR resolver_funaddr);
+
+/* Find the GNU ifunc minimal symbol that matches SYM. */
+extern bound_minimal_symbol find_gnu_ifunc (const symbol *sym);
extern void clear_pc_function_cache (void);
extern struct compunit_symtab *
find_pc_sect_compunit_symtab (CORE_ADDR, struct obj_section *);
-extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *);
+extern bool find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *);
extern void reread_symbols (void);
#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled."
#endif
-extern int in_gnu_ifunc_stub (CORE_ADDR pc);
+extern bool in_gnu_ifunc_stub (CORE_ADDR pc);
/* Functions for resolving STT_GNU_IFUNC symbols which are implemented only
for ELF symbol files. */
CORE_ADDR (*gnu_ifunc_resolve_addr) (struct gdbarch *gdbarch, CORE_ADDR pc);
/* See elf_gnu_ifunc_resolve_name for its real implementation. */
- int (*gnu_ifunc_resolve_name) (const char *function_name,
+ bool (*gnu_ifunc_resolve_name) (const char *function_name,
CORE_ADDR *function_address_p);
/* See elf_gnu_ifunc_resolver_stop for its real implementation. */
struct symtab *symtab = NULL;
struct symbol *symbol = NULL;
struct obj_section *section = NULL;
+ struct minimal_symbol *msymbol = NULL;
/* Line number. Line numbers start at 1 and proceed through symtab->nlines.
0 is never a valid line number; it is used to indicate that line number
information is not available. */
/* Given a symtab and line number, return the pc there. */
-extern int find_line_pc (struct symtab *, int, CORE_ADDR *);
+extern bool find_line_pc (struct symtab *, int, CORE_ADDR *);
-extern int find_line_pc_range (struct symtab_and_line, CORE_ADDR *,
- CORE_ADDR *);
+extern bool find_line_pc_range (struct symtab_and_line, CORE_ADDR *,
+ CORE_ADDR *);
extern void resolve_sal_pc (struct symtab_and_line *);
extern void clear_solib (void);
-/* source.c */
-
-extern int identify_source_line (struct symtab *, int, int, CORE_ADDR);
-
-/* Flags passed as 4th argument to print_source_lines. */
-
-enum print_source_lines_flag
- {
- /* 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)
- };
-DEF_ENUM_FLAGS_TYPE (enum print_source_lines_flag, print_source_lines_flags);
-
-extern void print_source_lines (struct symtab *, int, int,
- 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 *);
-
/* The reason we're calling into a completion match list collector
function. */
enum class complete_symbol_mode
/* symtab.c */
-int matching_obj_sections (struct obj_section *, struct obj_section *);
+bool matching_obj_sections (struct obj_section *, struct obj_section *);
-extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *);
+extern struct symtab *find_line_symtab (struct symtab *, int, int *, bool *);
-extern struct symtab_and_line find_function_start_sal (struct symbol *sym,
- int);
+/* Given a function symbol SYM, find the symtab and line for the start
+ of the function. If FUNFIRSTLINE is true, we want the first line
+ of real code inside the function. */
+extern symtab_and_line find_function_start_sal (symbol *sym, bool
+ funfirstline);
+
+/* Same, but start with a function address/section instead of a
+ symbol. */
+extern symtab_and_line find_function_start_sal (CORE_ADDR func_addr,
+ obj_section *section,
+ bool funfirstline);
extern void skip_prologue_sal (struct symtab_and_line *);
extern symbol *find_function_alias_target (bound_minimal_symbol msymbol);
/* Symbol searching */
-/* Note: struct symbol_search, search_symbols, et.al. are declared here,
- instead of making them local to symtab.c, for gdbtk's sake. */
-/* When using search_symbols, a vector of the following structs is
- returned. */
+/* When using the symbol_searcher struct to search for symbols, a vector of
+ the following structs is returned. */
struct symbol_search
{
symbol_search (int block_, struct symbol *symbol_)
const symbol_search &sym_b);
};
-extern std::vector<symbol_search> search_symbols (const char *,
- enum search_domain, int,
- const char **);
+/* In order to search for global symbols of a particular kind matching
+ particular regular expressions, create an instance of this structure and
+ call the SEARCH member function. */
+class global_symbol_searcher
+{
+public:
+
+ /* Constructor. */
+ global_symbol_searcher (enum search_domain kind,
+ const char *symbol_name_regexp)
+ : m_kind (kind),
+ m_symbol_name_regexp (symbol_name_regexp)
+ {
+ /* The symbol searching is designed to only find one kind of thing. */
+ gdb_assert (m_kind != ALL_DOMAIN);
+ }
+
+ /* Set the optional regexp that matches against the symbol type. */
+ void set_symbol_type_regexp (const char *regexp)
+ {
+ m_symbol_type_regexp = regexp;
+ }
+
+ /* Set the flag to exclude minsyms from the search results. */
+ void set_exclude_minsyms (bool exclude_minsyms)
+ {
+ m_exclude_minsyms = exclude_minsyms;
+ }
+
+ /* Set the maximum number of search results to be returned. */
+ void set_max_search_results (size_t max_search_results)
+ {
+ m_max_search_results = max_search_results;
+ }
+
+ /* Search the symbols from all objfiles in the current program space
+ looking for matches as defined by the current state of this object.
+
+ Within each file the results are sorted locally; each symtab's global
+ and static blocks are separately alphabetized. Duplicate entries are
+ removed. */
+ std::vector<symbol_search> search () const;
+
+ /* The set of source files to search in for matching symbols. This is
+ currently public so that it can be populated after this object has
+ been constructed. */
+ std::vector<const char *> filenames;
-/* The name of the ``main'' function.
- FIXME: cagney/2001-03-20: Can't make main_name() const since some
- of the calling code currently assumes that the string isn't
- const. */
-extern /*const */ char *main_name (void);
+private:
+ /* The kind of symbols are we searching for.
+ VARIABLES_DOMAIN - Search all symbols, excluding functions, type
+ names, and constants (enums).
+ FUNCTIONS_DOMAIN - Search all functions..
+ TYPES_DOMAIN - Search all type names.
+ MODULES_DOMAIN - Search all Fortran modules.
+ ALL_DOMAIN - Not valid for this function. */
+ enum search_domain m_kind;
+
+ /* Regular expression to match against the symbol name. */
+ const char *m_symbol_name_regexp = nullptr;
+
+ /* Regular expression to match against the symbol type. */
+ const char *m_symbol_type_regexp = nullptr;
+
+ /* When this flag is false then minsyms that match M_SYMBOL_REGEXP will
+ be included in the results, otherwise they are excluded. */
+ bool m_exclude_minsyms = false;
+
+ /* Maximum number of search results. We currently impose a hard limit
+ of SIZE_MAX, there is no "unlimited". */
+ size_t m_max_search_results = SIZE_MAX;
+
+ /* Expand symtabs in OBJFILE that match PREG, are of type M_KIND. Return
+ true if any msymbols were seen that we should later consider adding to
+ the results list. */
+ bool expand_symtabs (objfile *objfile,
+ const gdb::optional<compiled_regex> &preg) const;
+
+ /* Add symbols from symtabs in OBJFILE that match PREG, and TREG, and are
+ of type M_KIND, to the results set RESULTS_SET. Return false if we
+ stop adding results early due to having already found too many results
+ (based on M_MAX_SEARCH_RESULTS limit), otherwise return true.
+ Returning true does not indicate that any results were added, just
+ that we didn't _not_ add a result due to reaching MAX_SEARCH_RESULTS. */
+ bool add_matching_symbols (objfile *objfile,
+ const gdb::optional<compiled_regex> &preg,
+ const gdb::optional<compiled_regex> &treg,
+ std::set<symbol_search> *result_set) const;
+
+ /* Add msymbols from OBJFILE that match PREG and M_KIND, to the results
+ vector RESULTS. Return false if we stop adding results early due to
+ having already found too many results (based on max search results
+ limit M_MAX_SEARCH_RESULTS), otherwise return true. Returning true
+ does not indicate that any results were added, just that we didn't
+ _not_ add a result due to reaching MAX_SEARCH_RESULTS. */
+ bool add_matching_msymbols (objfile *objfile,
+ const gdb::optional<compiled_regex> &preg,
+ std::vector<symbol_search> *results) const;
+
+ /* Return true if MSYMBOL is of type KIND. */
+ static bool is_suitable_msymbol (const enum search_domain kind,
+ const minimal_symbol *msymbol);
+};
+
+/* When searching for Fortran symbols within modules (functions/variables)
+ we return a vector of this type. The first item in the pair is the
+ module symbol, and the second item is the symbol for the function or
+ variable we found. */
+typedef std::pair<symbol_search, symbol_search> module_symbol_search;
+
+/* Searches the symbols to find function and variables symbols (depending
+ on KIND) within Fortran modules. The MODULE_REGEXP matches against the
+ name of the module, REGEXP matches against the name of the symbol within
+ the module, and TYPE_REGEXP matches against the type of the symbol
+ within the module. */
+extern std::vector<module_symbol_search> search_module_symbols
+ (const char *module_regexp, const char *regexp,
+ const char *type_regexp, search_domain kind);
+
+/* Convert a global or static symbol SYM (based on BLOCK, which should be
+ either GLOBAL_BLOCK or STATIC_BLOCK) into a string for use in 'info'
+ type commands (e.g. 'info variables', 'info functions', etc). KIND is
+ the type of symbol that was searched for which gave us SYM. */
+
+extern std::string symbol_to_info_string (struct symbol *sym, int block,
+ enum search_domain kind);
+
+extern bool treg_matches_sym_type_name (const compiled_regex &treg,
+ const struct symbol *sym);
+
+/* The name of the ``main'' function. */
+extern const char *main_name ();
extern enum language main_language (void);
-/* Lookup symbol NAME from DOMAIN in MAIN_OBJFILE's global blocks.
+/* Lookup symbol NAME from DOMAIN in MAIN_OBJFILE's global or static blocks,
+ as specified by BLOCK_INDEX.
This searches MAIN_OBJFILE as well as any associated separate debug info
objfiles of MAIN_OBJFILE.
+ BLOCK_INDEX can be GLOBAL_BLOCK or STATIC_BLOCK.
Upon success fixes up the symbol's section if necessary. */
extern struct block_symbol
lookup_global_symbol_from_objfile (struct objfile *main_objfile,
+ enum block_enum block_index,
const char *name,
const domain_enum domain);
/* Return 1 if the supplied producer string matches the ARM RealView
compiler (armcc). */
-int producer_is_realview (const char *producer);
+bool producer_is_realview (const char *producer);
void fixup_section (struct general_symbol_info *ginfo,
CORE_ADDR addr, struct objfile *objfile);
extern unsigned int symbol_lookup_debug;
-extern int basenames_may_differ;
+extern bool basenames_may_differ;
-int compare_filenames_for_search (const char *filename,
- const char *search_name);
+bool compare_filenames_for_search (const char *filename,
+ const char *search_name);
-int compare_glob_filenames_for_search (const char *filename,
- const char *search_name);
+bool compare_glob_filenames_for_search (const char *filename,
+ const char *search_name);
bool iterate_over_some_symtabs (const char *name,
const char *real_path,
true to indicate that LA_ITERATE_OVER_SYMBOLS should continue
iterating, or false to indicate that the iteration should end. */
-typedef bool (symbol_found_callback_ftype) (symbol *sym);
+typedef bool (symbol_found_callback_ftype) (struct block_symbol *bsym);
+
+/* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
+
+ For each symbol that matches, CALLBACK is called. The symbol is
+ passed to the callback.
+
+ If CALLBACK returns false, the iteration ends and this function
+ returns false. Otherwise, the search continues, and the function
+ eventually returns true. */
-void iterate_over_symbols (const struct block *block,
+bool iterate_over_symbols (const struct block *block,
const lookup_name_info &name,
const domain_enum domain,
gdb::function_view<symbol_found_callback_ftype> callback);
+/* Like iterate_over_symbols, but if all calls to CALLBACK return
+ true, then calls CALLBACK one additional time with a block_symbol
+ that has a valid block but a NULL symbol. */
+
+bool iterate_over_symbols_terminated
+ (const struct block *block,
+ const lookup_name_info &name,
+ const domain_enum domain,
+ gdb::function_view<symbol_found_callback_ftype> callback);
+
/* Storage type used by demangle_for_lookup. demangle_for_lookup
either returns a const char * pointer that points to either of the
fields of this type, or a pointer to the input NAME. This is done
const lookup_name_info &lookup_name,
const char *text, const char *word);
+/* A simple symbol searching class. */
+
+class symbol_searcher
+{
+public:
+ /* Returns the symbols found for the search. */
+ const std::vector<block_symbol> &
+ matching_symbols () const
+ {
+ return m_symbols;
+ }
+
+ /* Returns the minimal symbols found for the search. */
+ const std::vector<bound_minimal_symbol> &
+ matching_msymbols () const
+ {
+ return m_minimal_symbols;
+ }
+
+ /* Search for all symbols named NAME in LANGUAGE with DOMAIN, restricting
+ search to FILE_SYMTABS and SEARCH_PSPACE, both of which may be NULL
+ to search all symtabs and program spaces. */
+ void find_all_symbols (const std::string &name,
+ const struct language_defn *language,
+ enum search_domain search_domain,
+ std::vector<symtab *> *search_symtabs,
+ struct program_space *search_pspace);
+
+ /* Reset this object to perform another search. */
+ void reset ()
+ {
+ m_symbols.clear ();
+ m_minimal_symbols.clear ();
+ }
+
+private:
+ /* Matching debug symbols. */
+ std::vector<block_symbol> m_symbols;
+
+ /* Matching non-debug symbols. */
+ std::vector<bound_minimal_symbol> m_minimal_symbols;
+};
+
#endif /* !defined(SYMTAB_H) */
projects / deliverable / binutils-gdb.git / blobdiff