/* Private partial symbol table definitions.
- Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
This file is part of GDB.
ENUM_BITFIELD(domain_enum_tag) domain : 6;
- /* Address class (for info_symbols). */
+ /* Address class (for info_symbols). Note that we don't allow
+ synthetic "aclass" values here at present, simply because there's
+ no need. */
ENUM_BITFIELD(address_class) aclass : 6;
#define PSYMBOL_DOMAIN(psymbol) (psymbol)->domain
#define PSYMBOL_CLASS(psymbol) (psymbol)->aclass
+/* A convenience enum to give names to some constants used when
+ searching psymtabs. This is internal to psymtab and should not be
+ used elsewhere. */
+
+enum psymtab_search_status
+ {
+ PST_NOT_SEARCHED,
+ PST_SEARCHED_AND_FOUND,
+ PST_SEARCHED_AND_NOT_FOUND
+ };
+
/* Each source file that has not been fully read in is represented by
a partial_symtab. This contains the information on where in the
executable the debugging symbols for a specific file are, and a
struct partial_symtab *next;
- /* Name of the source file which this partial_symtab defines. */
+ /* Name of the source file which this partial_symtab defines,
+ or if the psymtab is anonymous then a descriptive name for
+ debugging purposes, or "". It must not be NULL. */
const char *filename;
const char *dirname;
- /* Information about the object file from which symbols should be read. */
-
- struct objfile *objfile;
-
- /* Set of relocation offsets to apply to each section. */
-
- struct section_offsets *section_offsets;
-
/* Range of text addresses covered by this file; texthigh is the
beginning of the next section. Do not use if PSYMTABS_ADDRMAP_SUPPORTED
is set. */
CORE_ADDR textlow;
CORE_ADDR texthigh;
+ /* If NULL, this is an ordinary partial symbol table.
+
+ If non-NULL, this holds a single includer of this partial symbol
+ table, and this partial symbol table is a shared one.
+
+ A shared psymtab is one that is referenced by multiple other
+ psymtabs, and which conceptually has its contents directly
+ included in those.
+
+ Shared psymtabs have special semantics. When a search finds a
+ symbol in a shared table, we instead return one of the non-shared
+ tables that include this one.
+
+ A shared psymtabs can be referred to by other shared ones.
+
+ The psymtabs that refer to a shared psymtab will list the shared
+ psymtab in their 'dependencies' array.
+
+ In DWARF terms, a shared psymtab is a DW_TAG_partial_unit; but
+ of course using a name based on that would be too confusing, so
+ "shared" was chosen instead.
+
+ Only a single user is needed because, when expanding a shared
+ psymtab, we only need to expand its "canonical" non-shared user.
+ The choice of which one should be canonical is left to the
+ debuginfo reader; it can be arbitrary. */
+
+ struct partial_symtab *user;
+
/* Array of pointers to all of the partial_symtab's which this one
depends on. Since this array can only be set to previous or
the current (?) psymtab, this dependency tree is guaranteed not
unsigned char psymtabs_addrmap_supported;
- /* Pointer to symtab eventually allocated for this source file, 0 if
+ /* True if the name of this partial symtab is not a source file name. */
+
+ unsigned char anonymous;
+
+ /* A flag that is temporarily used when searching psymtabs. */
+
+ ENUM_BITFIELD (psymtab_search_status) searched_flag : 2;
+
+ /* Pointer to compunit eventually allocated for this source file, 0 if
!readin or if we haven't looked for the symtab after it was readin. */
- struct symtab *symtab;
+ struct compunit_symtab *compunit_symtab;
/* Pointer to function which will read in the symtab corresponding to
this psymtab. */
- void (*read_symtab) (struct partial_symtab *);
+ void (*read_symtab) (struct partial_symtab *, struct objfile *);
/* Information that lets read_symtab() locate the part of the symbol table
that this psymtab corresponds to. This information is private to the
void *read_symtab_private;
};
-extern void sort_pst_symbols (struct partial_symtab *);
+extern void sort_pst_symbols (struct objfile *, struct partial_symtab *);
/* Add any kind of symbol to a psymbol_allocation_list. */
-extern const
-struct partial_symbol *add_psymbol_to_list (const char *, int,
- int, domain_enum,
- enum address_class,
- struct psymbol_allocation_list *,
- long, CORE_ADDR,
- enum language, struct objfile *);
+extern void add_psymbol_to_list (const char *, int,
+ int, domain_enum,
+ enum address_class,
+ struct psymbol_allocation_list *,
+ long, CORE_ADDR,
+ enum language, struct objfile *);
extern void init_psymbol_list (struct objfile *, int);
extern struct partial_symtab *start_psymtab_common (struct objfile *,
- struct section_offsets *,
const char *, CORE_ADDR,
struct partial_symbol **,
struct partial_symbol **);
extern struct partial_symtab *allocate_psymtab (const char *,
- struct objfile *);
+ struct objfile *)
+ ATTRIBUTE_NONNULL (1);
+
+extern void discard_psymtab (struct objfile *, struct partial_symtab *);
-extern void discard_psymtab (struct partial_symtab *);
+extern struct cleanup *make_cleanup_discard_psymtabs (struct objfile *);
/* Traverse all psymtabs in one objfile. */