/* Definitions for symbol file management in GDB.
- Copyright (C) 1992-2013 Free Software Foundation, Inc.
+ Copyright (C) 1992-2019 Free Software Foundation, Inc.
This file is part of GDB.
#if !defined (OBJFILES_H)
#define OBJFILES_H
+#include "hashtab.h"
#include "gdb_obstack.h" /* For obstack internals. */
-#include "symfile.h" /* For struct psymbol_allocation_list. */
+#include "objfile-flags.h"
+#include "symfile.h"
#include "progspace.h"
#include "registry.h"
#include "gdb_bfd.h"
+#include <vector>
+#include "common/next-iterator.h"
+#include "common/safe-iterator.h"
struct bcache;
struct htab;
-struct symtab;
struct objfile_data;
+struct partial_symbol;
/* This structure maintains information on a per-objfile basis about the
"entry point" of the objfile, and the scope within which the entry point
process startup code. Since we have no guarantee that the linked
in startup modules have any debugging information that gdb can use,
we need to avoid following frame pointers back into frames that might
- have been built in the startup code, as we might get hopelessly
+ have been built in the startup code, as we might get hopelessly
confused. However, we almost always have debugging information
available for main().
from user code don't go wandering off into the startup code. */
struct entry_info
- {
- /* The relocated value we should use for this objfile entry point. */
- CORE_ADDR entry_point;
+{
+ /* The unrelocated value we should use for this objfile entry point. */
+ CORE_ADDR entry_point;
- /* Set to 1 iff ENTRY_POINT contains a valid value. */
- unsigned entry_point_p : 1;
- };
+ /* The index of the section in which the entry point appears. */
+ int the_bfd_section_index;
+
+ /* Set to 1 iff ENTRY_POINT contains a valid value. */
+ unsigned entry_point_p : 1;
+
+ /* Set to 1 iff this object was initialized. */
+ unsigned initialized : 1;
+};
/* Sections in an objfile. The section offsets are stored in the
OBJFILE. */
struct obj_section
- {
- struct bfd_section *the_bfd_section; /* BFD section pointer */
+{
+ /* BFD section pointer */
+ struct bfd_section *the_bfd_section;
- /* Objfile this section is part of. */
- struct objfile *objfile;
+ /* Objfile this section is part of. */
+ struct objfile *objfile;
- /* True if this "overlay section" is mapped into an "overlay region". */
- int ovly_mapped;
- };
+ /* True if this "overlay section" is mapped into an "overlay region". */
+ int ovly_mapped;
+};
/* Relocation offset applied to S. */
#define obj_section_offset(s) \
read, size of string table (if any), etc. */
struct objstats
- {
- int n_minsyms; /* Number of minimal symbols read */
- int n_psyms; /* Number of partial symbols read */
- int n_syms; /* Number of full symbols read */
- int n_stabs; /* Number of ".stabs" read (if applicable) */
- int n_types; /* Number of types */
- int sz_strtab; /* Size of stringtable, (if applicable) */
- };
+{
+ /* Number of partial symbols read. */
+ int n_psyms = 0;
+
+ /* Number of full symbols read. */
+ int n_syms = 0;
+
+ /* Number of ".stabs" read (if applicable). */
+ int n_stabs = 0;
+
+ /* Number of types. */
+ int n_types = 0;
+
+ /* Size of stringtable, (if applicable). */
+ int sz_strtab = 0;
+};
#define OBJSTAT(objfile, expr) (objfile -> stats.expr)
#define OBJSTATS struct objstats stats
struct objfile_per_bfd_storage
{
+ objfile_per_bfd_storage ()
+ : minsyms_read (false)
+ {}
+
/* The storage has an obstack of its own. */
- struct obstack storage_obstack;
-
+ auto_obstack storage_obstack;
+
/* Byte cache for file names. */
- struct bcache *filename_cache;
+ bcache *filename_cache = NULL;
/* Byte cache for macros. */
- struct bcache *macro_cache;
+
+ bcache *macro_cache = NULL;
/* The gdbarch associated with the BFD. Note that this gdbarch is
determined solely from BFD information, without looking at target
information. The gdbarch determined from a running target may
differ from this e.g. with respect to register types and names. */
- struct gdbarch *gdbarch;
+ struct gdbarch *gdbarch = NULL;
/* Hash table for mapping symbol names to demangled names. Each
entry in the hash table is actually two consecutive strings,
both null-terminated; the first one is a mangled or linkage
name, and the second is the demangled name or just a zero byte
if the name doesn't demangle. */
- struct htab *demangled_names_hash;
-};
-/* Master structure for keeping track of each file from which
- gdb reads symbols. There are several ways these get allocated: 1.
- The main symbol file, symfile_objfile, set by the symbol-file command,
- 2. Additional symbol files added by the add-symbol-file command,
- 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files
- for modules that were loaded when GDB attached to a remote system
- (see remote-vx.c). */
+ htab *demangled_names_hash = NULL;
-struct objfile
- {
+ /* The per-objfile information about the entry point, the scope (file/func)
+ containing the entry point, and the scope of the user's main() func. */
- /* All struct objfile's are chained together by their next pointers.
- The program space field "objfiles" (frequently referenced via
- the macro "object_files") points to the first link in this
- chain. */
+ entry_info ei {};
- struct objfile *next;
+ /* The name and language of any "main" found in this objfile. The
+ name can be NULL, which means that the information was not
+ recorded. */
- /* The object file's original name as specified by the user,
- made absolute, and tilde-expanded. However, it is not canonicalized
- (i.e., it has not been passed through gdb_realpath).
- This pointer is never NULL. This does not have to be freed; it is
- guaranteed to have a lifetime at least as long as the objfile. */
+ const char *name_of_main = NULL;
+ enum language language_of_main = language_unknown;
- char *original_name;
+ /* Each file contains a pointer to an array of minimal symbols for all
+ global symbols that are defined within the file. The array is
+ terminated by a "null symbol", one that has a NULL pointer for the
+ name and a zero value for the address. This makes it easy to walk
+ through the array when passed a pointer to somewhere in the middle
+ of it. There is also a count of the number of symbols, which does
+ not include the terminating null symbol. The array itself, as well
+ as all the data that it points to, should be allocated on the
+ objfile_obstack for this file. */
- CORE_ADDR addr_low;
+ minimal_symbol *msymbols = NULL;
+ int minimal_symbol_count = 0;
- /* Some flag bits for this objfile.
- The values are defined by OBJF_*. */
+ /* The number of minimal symbols read, before any minimal symbol
+ de-duplication is applied. Note in particular that this has only
+ a passing relationship with the actual size of the table above;
+ use minimal_symbol_count if you need the true size. */
- unsigned short flags;
+ int n_minsyms = 0;
- /* The program space associated with this objfile. */
+ /* This is true if minimal symbols have already been read. Symbol
+ readers can use this to bypass minimal symbol reading. Also, the
+ minimal symbol table management code in minsyms.c uses this to
+ suppress new minimal symbols. You might think that MSYMBOLS or
+ MINIMAL_SYMBOL_COUNT could be used for this, but it is possible
+ for multiple readers to install minimal symbols into a given
+ per-BFD. */
- struct program_space *pspace;
+ bool minsyms_read : 1;
- /* Each objfile points to a linked list of symtabs derived from this file,
- one symtab structure for each compilation unit (source file). Each link
- in the symtab list contains a backpointer to this objfile. */
+ /* This is a hash table used to index the minimal symbols by name. */
- struct symtab *symtabs;
+ minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE] {};
- /* Each objfile points to a linked list of partial symtabs derived from
- this file, one partial symtab structure for each compilation unit
- (source file). */
+ /* This hash table is used to index the minimal symbols by their
+ demangled names. */
+
+ minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE] {};
+
+ /* All the different languages of symbols found in the demangled
+ hash table. A flat/vector-based map is more efficient than a map
+ or hash table here, since this will only usually contain zero or
+ one entries. */
+ std::vector<enum language> demangled_hash_languages;
+};
+
+/* Master structure for keeping track of each file from which
+ gdb reads symbols. There are several ways these get allocated: 1.
+ The main symbol file, symfile_objfile, set by the symbol-file command,
+ 2. Additional symbol files added by the add-symbol-file command,
+ 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files
+ for modules that were loaded when GDB attached to a remote system
+ (see remote-vx.c). */
- struct partial_symtab *psymtabs;
+struct objfile
+{
+ objfile (bfd *, const char *, objfile_flags);
+ ~objfile ();
- /* Map addresses to the entries of PSYMTABS. It would be more efficient to
- have a map per the whole process but ADDRMAP cannot selectively remove
- its items during FREE_OBJFILE. This mapping is already present even for
- PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */
+ DISABLE_COPY_AND_ASSIGN (objfile);
- struct addrmap *psymtabs_addrmap;
+ /* All struct objfile's are chained together by their next pointers.
+ The program space field "objfiles" (frequently referenced via
+ the macro "object_files") points to the first link in this chain. */
- /* List of freed partial symtabs, available for re-use. */
+ struct objfile *next = nullptr;
- struct partial_symtab *free_psymtabs;
+ /* The object file's original name as specified by the user,
+ made absolute, and tilde-expanded. However, it is not canonicalized
+ (i.e., it has not been passed through gdb_realpath).
+ This pointer is never NULL. This does not have to be freed; it is
+ guaranteed to have a lifetime at least as long as the objfile. */
- /* The object file's BFD. Can be null if the objfile contains only
- minimal symbols, e.g. the run time common symbols for SunOS4. */
+ char *original_name = nullptr;
- bfd *obfd;
+ CORE_ADDR addr_low = 0;
- /* The per-BFD data. Note that this is treated specially if OBFD
- is NULL. */
+ /* Some flag bits for this objfile. */
- struct objfile_per_bfd_storage *per_bfd;
+ objfile_flags flags;
- /* The modification timestamp of the object file, as of the last time
- we read its symbols. */
+ /* The program space associated with this objfile. */
- long mtime;
+ struct program_space *pspace;
- /* Obstack to hold objects that should be freed when we load a new symbol
- table from this object file. */
+ /* List of compunits.
+ These are used to do symbol lookups and file/line-number lookups. */
- struct obstack objfile_obstack;
+ struct compunit_symtab *compunit_symtabs = nullptr;
- /* A byte cache where we can stash arbitrary "chunks" of bytes that
- will not change. */
+ /* Each objfile points to a linked list of partial symtabs derived from
+ this file, one partial symtab structure for each compilation unit
+ (source file). */
- struct psymbol_bcache *psymbol_cache; /* Byte cache for partial syms. */
+ struct partial_symtab *psymtabs = nullptr;
- /* Vectors of all partial symbols read in from file. The actual data
- is stored in the objfile_obstack. */
+ /* Map addresses to the entries of PSYMTABS. It would be more efficient to
+ have a map per the whole process but ADDRMAP cannot selectively remove
+ its items during FREE_OBJFILE. This mapping is already present even for
+ PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */
- struct psymbol_allocation_list global_psymbols;
- struct psymbol_allocation_list static_psymbols;
+ struct addrmap *psymtabs_addrmap = nullptr;
- /* Each file contains a pointer to an array of minimal symbols for all
- global symbols that are defined within the file. The array is
- terminated by a "null symbol", one that has a NULL pointer for the
- name and a zero value for the address. This makes it easy to walk
- through the array when passed a pointer to somewhere in the middle
- of it. There is also a count of the number of symbols, which does
- not include the terminating null symbol. The array itself, as well
- as all the data that it points to, should be allocated on the
- objfile_obstack for this file. */
+ /* List of freed partial symtabs, available for re-use. */
- struct minimal_symbol *msymbols;
- int minimal_symbol_count;
+ struct partial_symtab *free_psymtabs = nullptr;
- /* This is a hash table used to index the minimal symbols by name. */
+ /* 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 minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE];
+ bfd *obfd;
- /* This hash table is used to index the minimal symbols by their
- demangled names. */
+ /* The per-BFD data. Note that this is treated specially if OBFD
+ is NULL. */
- struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
+ struct objfile_per_bfd_storage *per_bfd = nullptr;
- /* 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
- allocated memory, and is shared by all objfiles that use the
- object module reader of this type. */
+ /* The modification timestamp of the object file, as of the last time
+ we read its symbols. */
- const struct sym_fns *sf;
+ long mtime = 0;
- /* The per-objfile information about the entry point, the scope (file/func)
- containing the entry point, and the scope of the user's main() func. */
+ /* Obstack to hold objects that should be freed when we load a new symbol
+ table from this object file. */
- struct entry_info ei;
+ struct obstack objfile_obstack {};
- /* Per objfile data-pointers required by other GDB modules. */
+ /* A byte cache where we can stash arbitrary "chunks" of bytes that
+ will not change. */
- REGISTRY_FIELDS;
+ struct psymbol_bcache *psymbol_cache;
- /* Set of relocation offsets to apply to each section.
- The table is indexed by the_bfd_section->index, thus it is generally
- as large as the number of sections in the binary.
- The table is stored on the objfile_obstack.
+ /* Map symbol addresses to the partial symtab that defines the
+ object at that address. */
- These offsets indicate that all symbols (including partial and
- minimal symbols) which have been read have been relocated by this
- much. Symbols which are yet to be read need to be relocated by it. */
+ std::vector<std::pair<CORE_ADDR, partial_symtab *>> psymbol_map;
- struct section_offsets *section_offsets;
- int num_sections;
+ /* Vectors of all partial symbols read in from file. The actual data
+ is stored in the objfile_obstack. */
- /* Indexes in the section_offsets array. These are initialized by the
- *_symfile_offsets() family of functions (som_symfile_offsets,
- xcoff_symfile_offsets, default_symfile_offsets). In theory they
- should correspond to the section indexes used by bfd for the
- current objfile. The exception to this for the time being is the
- SOM version. */
+ std::vector<partial_symbol *> global_psymbols;
+ std::vector<partial_symbol *> static_psymbols;
- int sect_index_text;
- int sect_index_data;
- int sect_index_bss;
- int sect_index_rodata;
+ /* 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
+ allocated memory, and is shared by all objfiles that use the
+ object module reader of this type. */
- /* These pointers are used to locate the section table, which
- among other things, is used to map pc addresses into sections.
- SECTIONS points to the first entry in the table, and
- SECTIONS_END points to the first location past the last entry
- in the table. The table is stored on the objfile_obstack. The
- sections are indexed by the BFD section index; but the
- structure data is only valid for certain sections
- (e.g. non-empty, SEC_ALLOC). */
+ const struct sym_fns *sf = nullptr;
- struct obj_section *sections, *sections_end;
+ /* Per objfile data-pointers required by other GDB modules. */
- /* GDB allows to have debug symbols in separate object files. This is
- used by .gnu_debuglink, ELF build id note and Mach-O OSO.
- Although this is a tree structure, GDB only support one level
- (ie a separate debug for a separate debug is not supported). Note that
- separate debug object are in the main chain and therefore will be
- visited by ALL_OBJFILES & co iterators. Separate debug objfile always
- has a non-nul separate_debug_objfile_backlink. */
+ REGISTRY_FIELDS {};
- /* Link to the first separate debug object, if any. */
- struct objfile *separate_debug_objfile;
+ /* Set of relocation offsets to apply to each section.
+ The table is indexed by the_bfd_section->index, thus it is generally
+ as large as the number of sections in the binary.
+ The table is stored on the objfile_obstack.
- /* If this is a separate debug object, this is used as a link to the
- actual executable objfile. */
- struct objfile *separate_debug_objfile_backlink;
+ These offsets indicate that all symbols (including partial and
+ minimal symbols) which have been read have been relocated by this
+ much. Symbols which are yet to be read need to be relocated by it. */
- /* If this is a separate debug object, this is a link to the next one
- for the same executable objfile. */
- struct objfile *separate_debug_objfile_link;
+ struct section_offsets *section_offsets = nullptr;
+ int num_sections = 0;
- /* Place to stash various statistics about this objfile. */
- OBJSTATS;
+ /* Indexes in the section_offsets array. These are initialized by the
+ *_symfile_offsets() family of functions (som_symfile_offsets,
+ xcoff_symfile_offsets, default_symfile_offsets). In theory they
+ should correspond to the section indexes used by bfd for the
+ current objfile. The exception to this for the time being is the
+ SOM version.
- /* A linked list of symbols created when reading template types or
- function templates. These symbols are not stored in any symbol
- table, so we have to keep them here to relocate them
- properly. */
- struct symbol *template_symbols;
- };
+ These are initialized to -1 so that we can later detect if they
+ are used w/o being properly assigned to. */
-/* Defines for the objfile flag word. */
+ int sect_index_text = -1;
+ int sect_index_data = -1;
+ int sect_index_bss = -1;
+ int sect_index_rodata = -1;
-/* When an object file has its functions reordered (currently Irix-5.2
- shared libraries exhibit this behaviour), we will need an expensive
- algorithm to locate a partial symtab or symtab via an address.
- To avoid this penalty for normal object files, we use this flag,
- whose setting is determined upon symbol table read in. */
+ /* These pointers are used to locate the section table, which
+ among other things, is used to map pc addresses into sections.
+ SECTIONS points to the first entry in the table, and
+ SECTIONS_END points to the first location past the last entry
+ in the table. The table is stored on the objfile_obstack. The
+ sections are indexed by the BFD section index; but the
+ structure data is only valid for certain sections
+ (e.g. non-empty, SEC_ALLOC). */
-#define OBJF_REORDERED (1 << 0) /* Functions are reordered */
+ struct obj_section *sections = nullptr;
+ struct obj_section *sections_end = nullptr;
-/* Distinguish between an objfile for a shared library and a "vanilla"
- objfile. (If not set, the objfile may still actually be a solib.
- This can happen if the user created the objfile by using the
- add-symbol-file command. GDB doesn't in that situation actually
- check whether the file is a solib. Rather, the target's
- implementation of the solib interface is responsible for setting
- this flag when noticing solibs used by an inferior.) */
+ /* GDB allows to have debug symbols in separate object files. This is
+ used by .gnu_debuglink, ELF build id note and Mach-O OSO.
+ Although this is a tree structure, GDB only support one level
+ (ie a separate debug for a separate debug is not supported). Note that
+ separate debug object are in the main chain and therefore will be
+ visited by ALL_OBJFILES & co iterators. Separate debug objfile always
+ has a non-nul separate_debug_objfile_backlink. */
-#define OBJF_SHARED (1 << 1) /* From a shared library */
+ /* Link to the first separate debug object, if any. */
-/* User requested that this objfile be read in it's entirety. */
+ struct objfile *separate_debug_objfile = nullptr;
-#define OBJF_READNOW (1 << 2) /* Immediate full read */
+ /* If this is a separate debug object, this is used as a link to the
+ actual executable objfile. */
-/* This objfile was created because the user explicitly caused it
- (e.g., used the add-symbol-file command). This bit offers a way
- for run_command to remove old objfile entries which are no longer
- valid (i.e., are associated with an old inferior), but to preserve
- ones that the user explicitly loaded via the add-symbol-file
- command. */
+ struct objfile *separate_debug_objfile_backlink = nullptr;
-#define OBJF_USERLOADED (1 << 3) /* User loaded */
+ /* If this is a separate debug object, this is a link to the next one
+ for the same executable objfile. */
-/* Set if we have tried to read partial symtabs for this objfile.
- This is used to allow lazy reading of partial symtabs. */
+ struct objfile *separate_debug_objfile_link = nullptr;
-#define OBJF_PSYMTABS_READ (1 << 4)
+ /* Place to stash various statistics about this objfile. */
-/* Set if this is the main symbol file
- (as opposed to symbol file for dynamically loaded code). */
+ OBJSTATS;
-#define OBJF_MAINLINE (1 << 5)
+ /* A linked list of symbols created when reading template types or
+ function templates. These symbols are not stored in any symbol
+ table, so we have to keep them here to relocate them
+ properly. */
-/* ORIGINAL_NAME and OBFD->FILENAME correspond to text description unrelated to
- filesystem names. It can be for example "<image in memory>". */
+ struct symbol *template_symbols = nullptr;
-#define OBJF_NOT_FILENAME (1 << 6)
+ /* Associate a static link (struct dynamic_prop *) to all blocks (struct
+ block *) that have one.
-/* Declarations for functions defined in objfiles.c */
+ In the context of nested functions (available in Pascal, Ada and GNU C,
+ for instance), a static link (as in DWARF's DW_AT_static_link attribute)
+ for a function is a way to get the frame corresponding to the enclosing
+ function.
-extern struct objfile *allocate_objfile (bfd *, const char *name, int);
+ Very few blocks have a static link, so it's more memory efficient to
+ store these here rather than in struct block. Static links must be
+ allocated on the objfile's obstack. */
+ htab_t static_links {};
+};
-extern struct gdbarch *get_objfile_arch (struct objfile *);
+/* Declarations for functions defined in objfiles.c */
+
+extern struct gdbarch *get_objfile_arch (const struct objfile *);
extern int entry_point_address_query (CORE_ADDR *entry_p);
extern void build_objfile_section_table (struct objfile *);
-extern void terminate_minimal_symbol_table (struct objfile *objfile);
-
extern struct objfile *objfile_separate_debug_iterate (const struct objfile *,
const struct objfile *);
extern void put_objfile_before (struct objfile *, struct objfile *);
-extern void objfile_to_front (struct objfile *);
-
extern void add_separate_debug_objfile (struct objfile *, struct objfile *);
extern void unlink_objfile (struct objfile *);
-extern void free_objfile (struct objfile *);
-
extern void free_objfile_separate_debug (struct objfile *);
-extern struct cleanup *make_cleanup_free_objfile (struct objfile *);
-
extern void free_all_objfiles (void);
extern void objfile_relocate (struct objfile *, const struct section_offsets *);
extern int is_addr_in_objfile (CORE_ADDR addr, const struct objfile *objfile);
+/* Return true if ADDRESS maps into one of the sections of a
+ OBJF_SHARED objfile of PSPACE and false otherwise. */
+
+extern int shared_objfile_contains_address_p (struct program_space *pspace,
+ CORE_ADDR address);
+
/* This operation deletes all objfile entries that represent solibs that
weren't explicitly loaded by the user, via e.g., the add-symbol-file
command. */
extern struct obj_section *find_pc_section (CORE_ADDR pc);
/* Return non-zero if PC is in a section called NAME. */
-extern int pc_in_section (CORE_ADDR, char *);
+extern int pc_in_section (CORE_ADDR, const char *);
/* Return non-zero if PC is in a SVR4-style procedure linkage table
section. */
/* In normal use, the section map will be rebuilt by find_pc_section
if objfiles have been added, removed or relocated since it was last
called. Calling inhibit_section_map_updates will inhibit this
- behavior until resume_section_map_updates is called. If you call
- inhibit_section_map_updates you must ensure that every call to
- find_pc_section in the inhibited region relates to a section that
- is already in the section map and has not since been removed or
- relocated. */
-extern void inhibit_section_map_updates (struct program_space *pspace);
-
-/* Resume automatically rebuilding the section map as required. */
-extern void resume_section_map_updates (struct program_space *pspace);
-
-/* Version of the above suitable for use as a cleanup. */
-extern void resume_section_map_updates_cleanup (void *arg);
+ behavior until the returned scoped_restore object is destroyed. If
+ you call inhibit_section_map_updates you must ensure that every
+ call to find_pc_section in the inhibited region relates to a
+ section that is already in the section map and has not since been
+ removed or relocated. */
+extern scoped_restore_tmpl<int> inhibit_section_map_updates
+ (struct program_space *pspace);
extern void default_iterate_over_objfiles_in_search_order
(struct gdbarch *gdbarch,
void *cb_data, struct objfile *current_objfile);
\f
-/* Traverse all object files in the current program space.
- ALL_OBJFILES_SAFE works even if you delete the objfile during the
- traversal. */
+/* An iterarable object that can be used to iterate over all
+ objfiles. The basic use is in a foreach, like:
+
+ for (objfile *objf : all_objfiles (pspace)) { ... } */
+
+class all_objfiles : public next_adapter<struct objfile>
+{
+public:
+
+ explicit all_objfiles (struct program_space *pspace)
+ : next_adapter<struct objfile> (pspace->objfiles)
+ {
+ }
+};
+
+/* An iterarable object that can be used to iterate over all
+ objfiles. The basic use is in a foreach, like:
+
+ for (objfile *objf : all_objfiles_safe (pspace)) { ... }
+
+ This variant uses a basic_safe_iterator so that objfiles can be
+ deleted during iteration. */
-/* Traverse all object files in program space SS. */
+class all_objfiles_safe
+ : public next_adapter<struct objfile,
+ basic_safe_iterator<next_iterator<objfile>>>
+{
+public:
+
+ explicit all_objfiles_safe (struct program_space *pspace)
+ : next_adapter<struct objfile,
+ basic_safe_iterator<next_iterator<objfile>>>
+ (pspace->objfiles)
+ {
+ }
+};
-#define ALL_PSPACE_OBJFILES(ss, obj) \
- for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next)
-#define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \
- for ((obj) = ss->objfiles; \
- (obj) != NULL? ((nxt)=(obj)->next,1) :0; \
- (obj) = (nxt))
+/* Traverse all object files in the current program space. */
#define ALL_OBJFILES(obj) \
for ((obj) = current_program_space->objfiles; \
(obj) != NULL; \
(obj) = (obj)->next)
-#define ALL_OBJFILES_SAFE(obj,nxt) \
- for ((obj) = current_program_space->objfiles; \
- (obj) != NULL? ((nxt)=(obj)->next,1) :0; \
- (obj) = (nxt))
-
/* Traverse all symtabs in one objfile. */
-#define ALL_OBJFILE_SYMTABS(objfile, s) \
- for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next)
+#define ALL_OBJFILE_FILETABS(objfile, cu, s) \
+ for (compunit_symtab *cu : objfile_compunits (objfile)) \
+ for (symtab *s : compunit_filetabs (cu))
+
+/* A range adapter that makes it possible to iterate over all
+ compunits in one objfile. */
-/* Traverse all primary symtabs in one objfile. */
+class objfile_compunits : public next_adapter<struct compunit_symtab>
+{
+public:
-#define ALL_OBJFILE_PRIMARY_SYMTABS(objfile, s) \
- ALL_OBJFILE_SYMTABS ((objfile), (s)) \
- if ((s)->primary)
+ explicit objfile_compunits (struct objfile *objfile)
+ : next_adapter<struct compunit_symtab> (objfile->compunit_symtabs)
+ {
+ }
+};
-/* Traverse all minimal symbols in one objfile. */
+/* A range adapter that makes it possible to iterate over all
+ minimal symbols of an objfile. */
-#define ALL_OBJFILE_MSYMBOLS(objfile, m) \
- for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++)
+class objfile_msymbols
+{
+public:
-/* Traverse all symtabs in all objfiles in the current symbol
- space. */
+ explicit objfile_msymbols (struct objfile *objfile)
+ : m_objfile (objfile)
+ {
+ }
-#define ALL_SYMTABS(objfile, s) \
- ALL_OBJFILES (objfile) \
- ALL_OBJFILE_SYMTABS (objfile, s)
+ struct iterator
+ {
+ typedef iterator self_type;
+ typedef struct minimal_symbol *value_type;
+ typedef struct minimal_symbol *&reference;
+ typedef struct minimal_symbol **pointer;
+ typedef std::forward_iterator_tag iterator_category;
+ typedef int difference_type;
+
+ explicit iterator (struct objfile *objfile)
+ : m_msym (objfile->per_bfd->msymbols)
+ {
+ /* Make sure to properly handle the case where there are no
+ minsyms. */
+ if (MSYMBOL_LINKAGE_NAME (m_msym) == nullptr)
+ m_msym = nullptr;
+ }
+
+ iterator ()
+ : m_msym (nullptr)
+ {
+ }
+
+ value_type operator* () const
+ {
+ return m_msym;
+ }
+
+ bool operator== (const self_type &other) const
+ {
+ return m_msym == other.m_msym;
+ }
+
+ bool operator!= (const self_type &other) const
+ {
+ return m_msym != other.m_msym;
+ }
+
+ self_type &operator++ ()
+ {
+ if (m_msym != nullptr)
+ {
+ ++m_msym;
+ if (MSYMBOL_LINKAGE_NAME (m_msym) == nullptr)
+ m_msym = nullptr;
+ }
+ return *this;
+ }
+
+ private:
+ struct minimal_symbol *m_msym;
+ };
-#define ALL_PSPACE_SYMTABS(ss, objfile, s) \
- ALL_PSPACE_OBJFILES (ss, objfile) \
- ALL_OBJFILE_SYMTABS (objfile, s)
+ iterator begin () const
+ {
+ return iterator (m_objfile);
+ }
-/* Traverse all symtabs in all objfiles in the current program space,
- skipping included files (which share a blockvector with their
- primary symtab). */
+ iterator end () const
+ {
+ return iterator ();
+ }
-#define ALL_PRIMARY_SYMTABS(objfile, s) \
- ALL_OBJFILES (objfile) \
- ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
+private:
-#define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \
- ALL_PSPACE_OBJFILES (ss, objfile) \
- ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
+ struct objfile *m_objfile;
+};
-/* Traverse all minimal symbols in all objfiles in the current symbol
+/* Traverse all symtabs in all objfiles in the current symbol
space. */
-#define ALL_MSYMBOLS(objfile, m) \
- ALL_OBJFILES (objfile) \
- ALL_OBJFILE_MSYMBOLS (objfile, m)
+#define ALL_FILETABS(objfile, ps, s) \
+ ALL_OBJFILES (objfile) \
+ ALL_OBJFILE_FILETABS (objfile, ps, s)
#define ALL_OBJFILE_OSECTIONS(objfile, osect) \
for (osect = objfile->sections; osect < objfile->sections_end; osect++) \
void set_objfile_per_bfd (struct objfile *obj);
+/* Return canonical name for OBJFILE.
+ This is the real file name if the file has been opened.
+ Otherwise it is the original name supplied by the user. */
+
const char *objfile_name (const struct objfile *objfile);
+/* Return the (real) file name of OBJFILE if the file has been opened,
+ otherwise return NULL. */
+
+const char *objfile_filename (const struct objfile *objfile);
+
+/* Return the name to print for OBJFILE in debugging messages. */
+
+extern const char *objfile_debug_name (const struct objfile *objfile);
+
+/* Return the name of the file format of OBJFILE if the file has been opened,
+ otherwise return NULL. */
+
+const char *objfile_flavour_name (struct objfile *objfile);
+
+/* Set the objfile's notion of the "main" name and language. */
+
+extern void set_objfile_main_name (struct objfile *objfile,
+ const char *name, enum language lang);
+
+extern void objfile_register_static_link
+ (struct objfile *objfile,
+ const struct block *block,
+ const struct dynamic_prop *static_link);
+
+extern const struct dynamic_prop *objfile_lookup_static_link
+ (struct objfile *objfile, const struct block *block);
+
#endif /* !defined (OBJFILES_H) */
projects / deliverable / binutils-gdb.git / blobdiff