/* Private partial symbol table definitions.
- Copyright (C) 2009-2015 Free Software Foundation, Inc.
+ Copyright (C) 2009-2019 Free Software Foundation, Inc.
This file is part of GDB.
#define PSYMPRIV_H
#include "psymtab.h"
-
-struct psymbol_allocation_list;
+#include "objfiles.h"
+#include "gdbsupport/gdb_string_view.h"
/* A partial_symbol records the name, domain, and address class of
symbols whose types we have not parsed yet. For functions, it also
contains their memory address, so we can find them from a PC value.
Each partial_symbol sits in a partial_symtab, all of which are chained
- on a partial symtab list and which points to the corresponding
+ on a partial symtab list and which points to the corresponding
normal symtab once the partial_symtab has been referenced. */
/* This structure is space critical. See space comments at the top of
struct partial_symbol
{
+ /* Return the section for this partial symbol, or nullptr if no
+ section has been set. */
+ struct obj_section *obj_section (struct objfile *objfile) const
+ {
+ if (ginfo.section >= 0)
+ return &objfile->sections[ginfo.section];
+ return nullptr;
+ }
+
+ /* Return the unrelocated address of this partial symbol. */
+ CORE_ADDR unrelocated_address () const
+ {
+ return ginfo.value.address;
+ }
+
+ /* Return the address of this partial symbol, relocated according to
+ the offsets provided in OBJFILE. */
+ CORE_ADDR address (const struct objfile *objfile) const
+ {
+ return (ginfo.value.address
+ + ANOFFSET (objfile->section_offsets, ginfo.section));
+ }
- /* The general symbol info required for all types of symbols. */
+ /* Set the address of this partial symbol. The address must be
+ unrelocated. */
+ void set_unrelocated_address (CORE_ADDR addr)
+ {
+ ginfo.value.address = addr;
+ }
+
+ /* Note that partial_symbol does not derive from general_symbol_info
+ due to the bcache. See add_psymbol_to_bcache. */
struct general_symbol_info ginfo;
/* Name space code. */
- ENUM_BITFIELD(domain_enum_tag) domain : 6;
+ ENUM_BITFIELD(domain_enum_tag) domain : SYMBOL_DOMAIN_BITS;
/* 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;
-
+ ENUM_BITFIELD(address_class) aclass : SYMBOL_ACLASS_BITS;
};
-#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. */
struct partial_symtab
{
+ /* Return the raw low text address of this partial_symtab. */
+ CORE_ADDR raw_text_low () const
+ {
+ return m_text_low;
+ }
+
+ /* Return the raw high text address of this partial_symtab. */
+ CORE_ADDR raw_text_high () const
+ {
+ return m_text_high;
+ }
+
+ /* Return the relocated low text address of this partial_symtab. */
+ CORE_ADDR text_low (struct objfile *objfile) const
+ {
+ return m_text_low + ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT (objfile));
+ }
+
+ /* Return the relocated high text address of this partial_symtab. */
+ CORE_ADDR text_high (struct objfile *objfile) const
+ {
+ return m_text_high + ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT (objfile));
+ }
+
+ /* Set the low text address of this partial_symtab. */
+ void set_text_low (CORE_ADDR addr)
+ {
+ m_text_low = addr;
+ text_low_valid = 1;
+ }
+
+ /* Set the hight text address of this partial_symtab. */
+ void set_text_high (CORE_ADDR addr)
+ {
+ m_text_high = addr;
+ text_high_valid = 1;
+ }
+
/* Chain of all existing partial symtabs. */
/* 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. */
+ is set. Do not refer directly to these fields. Instead, use the
+ accessors. The validity of these fields is determined by the
+ text_low_valid and text_high_valid fields; these are located later
+ in this structure for better packing. */
- CORE_ADDR textlow;
- CORE_ADDR texthigh;
+ CORE_ADDR m_text_low;
+ CORE_ADDR m_text_high;
/* If NULL, this is an ordinary partial symbol table.
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
ENUM_BITFIELD (psymtab_search_status) searched_flag : 2;
+ /* Validity of the m_text_low and m_text_high fields. */
+
+ unsigned int text_low_valid : 1;
+ unsigned int text_high_valid : 1;
+
/* 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. */
void *read_symtab_private;
};
-extern void sort_pst_symbols (struct objfile *, struct partial_symtab *);
+/* Specify whether a partial psymbol should be allocated on the global
+ list or the static list. */
+
+enum class psymbol_placement
+{
+ STATIC,
+ GLOBAL
+};
+
+/* Add a symbol to the partial symbol table of OBJFILE.
+
+ If COPY_NAME is true, make a copy of NAME, otherwise use the passed
+ reference.
+
+ THECLASS is the type of symbol.
+
+ SECTION is the index of the section of OBJFILE in which the symbol is found.
+
+ WHERE determines whether the symbol goes in the list of static or global
+ partial symbols of OBJFILE.
+
+ COREADDR is the address of the symbol. For partial symbols that don't have
+ an address, zero is passed.
+
+ LANGUAGE is the language from which the symbol originates. This will
+ influence, amongst other things, how the symbol name is demangled. */
-/* Add any kind of symbol to a psymbol_allocation_list. */
+extern void add_psymbol_to_list (gdb::string_view name,
+ bool copy_name, domain_enum domain,
+ enum address_class theclass,
+ short section,
+ psymbol_placement where,
+ CORE_ADDR coreaddr,
+ enum language language,
+ struct objfile *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 *);
+/* Initialize storage for partial symbols. If partial symbol storage
+ has already been initialized, this does nothing. TOTAL_SYMBOLS is
+ an estimate of how many symbols there will be. */
-extern void init_psymbol_list (struct objfile *, int);
+extern void init_psymbol_list (struct objfile *objfile, int total_symbols);
extern struct partial_symtab *start_psymtab_common (struct objfile *,
- const char *, CORE_ADDR,
- struct partial_symbol **,
- struct partial_symbol **);
+ const char *, CORE_ADDR);
-extern struct partial_symtab *allocate_psymtab (const char *,
- struct objfile *)
+extern void end_psymtab_common (struct objfile *, struct partial_symtab *);
+
+/* Allocate a new partial symbol table associated with OBJFILE.
+ FILENAME (which must be non-NULL) is the filename of this partial
+ symbol table; it is copied into the appropriate storage. A new
+ partial symbol table is returned; aside from "next" and "filename",
+ its fields are initialized to zero. */
+
+extern struct partial_symtab *allocate_psymtab (const char *filename,
+ struct objfile *objfile)
ATTRIBUTE_NONNULL (1);
-extern void discard_psymtab (struct objfile *, struct partial_symtab *);
+static inline void
+discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
+{
+ objfile->partial_symtabs->discard_psymtab (pst);
+}
-extern struct cleanup *make_cleanup_discard_psymtabs (struct objfile *);
+/* Used when recording partial symbol tables. On destruction,
+ discards any partial symbol tables that have been built. However,
+ the tables can be kept by calling the "keep" method. */
+class psymtab_discarder
+{
+ public:
-/* Traverse all psymtabs in one objfile. */
+ psymtab_discarder (struct objfile *objfile)
+ : m_objfile (objfile),
+ m_psymtab (objfile->partial_symtabs->psymtabs)
+ {
+ }
-#define ALL_OBJFILE_PSYMTABS(objfile, p) \
- for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next)
+ ~psymtab_discarder ()
+ {
+ if (m_objfile != NULL)
+ m_objfile->partial_symtabs->discard_psymtabs_to (m_psymtab);
+ }
+
+ /* Keep any partial symbol tables that were built. */
+ void keep ()
+ {
+ m_objfile = NULL;
+ }
+
+ private:
+
+ /* The objfile. If NULL this serves as a sentinel to indicate that
+ the psymtabs should be kept. */
+ struct objfile *m_objfile;
+ /* How far back to free. */
+ struct partial_symtab *m_psymtab;
+};
#endif /* PSYMPRIV_H */
projects / deliverable / binutils-gdb.git / blobdiff