/* Block-related functions for the GNU debugger, GDB.
- Copyright (C) 2003-2014 Free Software Foundation, Inc.
+ Copyright (C) 2003-2019 Free Software Foundation, Inc.
This file is part of GDB.
C++ files, namely using declarations and the current namespace in
scope. */
-struct block_namespace_info
+struct block_namespace_info : public allocate_on_obstack
{
- const char *scope;
- struct using_direct *using;
+ const char *scope = nullptr;
+ struct using_direct *using_decl = nullptr;
};
static void block_initialize_namespace (struct block *block,
/* A helper function that checks whether PC is in the blockvector BL.
It returns the containing block if there is one, or else NULL. */
-static struct block *
+static const struct block *
find_block_in_blockvector (const struct blockvector *bl, CORE_ADDR pc)
{
- struct block *b;
+ const struct block *b;
int bot, top, half;
/* If we have an addrmap mapping code addresses to blocks, then use
that. */
if (BLOCKVECTOR_MAP (bl))
- return addrmap_find (BLOCKVECTOR_MAP (bl), pc);
+ return (const struct block *) addrmap_find (BLOCKVECTOR_MAP (bl), pc);
/* Otherwise, use binary search to find the last block that starts
before PC.
struct compunit_symtab *cust)
{
const struct blockvector *bl;
- struct block *b;
+ const struct block *b;
if (cust == NULL)
{
/* DW_TAG_gnu_call_site will be missing just if GCC could not determine
the call target. */
throw_error (NO_ENTRY_VALUE_ERROR,
- _("DW_OP_GNU_entry_value resolving cannot find "
- "DW_TAG_GNU_call_site %s in %s"),
+ _("DW_OP_entry_value resolving cannot find "
+ "DW_TAG_call_site %s in %s"),
paddress (gdbarch, pc),
(msym.minsym == NULL ? "???"
: MSYMBOL_PRINT_NAME (msym.minsym)));
}
- return *slot;
+ return (struct call_site *) *slot;
}
/* Return the blockvector immediately containing the innermost lexical block
if (block == NULL || BLOCK_NAMESPACE (block) == NULL)
return NULL;
else
- return BLOCK_NAMESPACE (block)->using;
+ return BLOCK_NAMESPACE (block)->using_decl;
}
/* Set BLOCK's using member to USING; if needed, allocate memory via
void
block_set_using (struct block *block,
- struct using_direct *using,
+ struct using_direct *using_decl,
struct obstack *obstack)
{
block_initialize_namespace (block, obstack);
- BLOCK_NAMESPACE (block)->using = using;
+ BLOCK_NAMESPACE (block)->using_decl = using_decl;
}
/* If BLOCK_NAMESPACE (block) is NULL, allocate it via OBSTACK and
block_initialize_namespace (struct block *block, struct obstack *obstack)
{
if (BLOCK_NAMESPACE (block) == NULL)
- {
- BLOCK_NAMESPACE (block)
- = obstack_alloc (obstack, sizeof (struct block_namespace_info));
- BLOCK_NAMESPACE (block)->scope = NULL;
- BLOCK_NAMESPACE (block)->using = NULL;
- }
+ BLOCK_NAMESPACE (block) = new (obstack) struct block_namespace_info ();
}
/* Return the static block associated to BLOCK. Return NULL if block
zero/NULL. This is useful for creating "dummy" blocks that don't
correspond to actual source files.
- Warning: it sets the block's BLOCK_DICT to NULL, which isn't a
+ Warning: it sets the block's BLOCK_MULTIDICT to NULL, which isn't a
valid value. If you really don't want the block to have a
- dictionary, then you should subsequently set its BLOCK_DICT to
+ dictionary, then you should subsequently set its BLOCK_MULTIDICT to
dict_create_linear (obstack, NULL). */
struct block *
gb->compunit_symtab = cu;
}
+/* See block.h. */
+
+struct dynamic_prop *
+block_static_link (const struct block *block)
+{
+ struct objfile *objfile = block_objfile (block);
+
+ /* Only objfile-owned blocks that materialize top function scopes can have
+ static links. */
+ if (objfile == NULL || BLOCK_FUNCTION (block) == NULL)
+ return NULL;
+
+ return (struct dynamic_prop *) objfile_lookup_static_link (objfile, block);
+}
+
/* Return the compunit of the global block. */
static struct compunit_symtab *
block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust),
iterator->which);
- sym = dict_iterator_first (BLOCK_DICT (block), &iterator->dict_iter);
+ sym = mdict_iterator_first (BLOCK_MULTIDICT (block),
+ &iterator->mdict_iter);
}
else
- sym = dict_iterator_next (&iterator->dict_iter);
+ sym = mdict_iterator_next (&iterator->mdict_iter);
if (sym != NULL)
return sym;
initialize_block_iterator (block, iterator);
if (iterator->which == FIRST_LOCAL_BLOCK)
- return dict_iterator_first (block->dict, &iterator->dict_iter);
+ return mdict_iterator_first (block->multidict, &iterator->mdict_iter);
return block_iterator_step (iterator, 1);
}
block_iterator_next (struct block_iterator *iterator)
{
if (iterator->which == FIRST_LOCAL_BLOCK)
- return dict_iterator_next (&iterator->dict_iter);
+ return mdict_iterator_next (&iterator->mdict_iter);
return block_iterator_step (iterator, 0);
}
-/* Perform a single step for a "name" block iterator, iterating across
- symbol tables as needed. Returns the next symbol, or NULL when
- iteration is complete. */
-
-static struct symbol *
-block_iter_name_step (struct block_iterator *iterator, const char *name,
- int first)
-{
- struct symbol *sym;
-
- gdb_assert (iterator->which != FIRST_LOCAL_BLOCK);
-
- while (1)
- {
- if (first)
- {
- struct compunit_symtab *cust
- = find_iterator_compunit_symtab (iterator);
- const struct block *block;
-
- /* Iteration is complete. */
- if (cust == NULL)
- return NULL;
-
- block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust),
- iterator->which);
- sym = dict_iter_name_first (BLOCK_DICT (block), name,
- &iterator->dict_iter);
- }
- else
- sym = dict_iter_name_next (name, &iterator->dict_iter);
-
- if (sym != NULL)
- return sym;
-
- /* We have finished iterating the appropriate block of one
- symtab. Now advance to the next symtab and begin iteration
- there. */
- ++iterator->idx;
- first = 1;
- }
-}
-
-/* See block.h. */
-
-struct symbol *
-block_iter_name_first (const struct block *block,
- const char *name,
- struct block_iterator *iterator)
-{
- initialize_block_iterator (block, iterator);
-
- if (iterator->which == FIRST_LOCAL_BLOCK)
- return dict_iter_name_first (block->dict, name, &iterator->dict_iter);
-
- return block_iter_name_step (iterator, name, 1);
-}
-
-/* See block.h. */
-
-struct symbol *
-block_iter_name_next (const char *name, struct block_iterator *iterator)
-{
- if (iterator->which == FIRST_LOCAL_BLOCK)
- return dict_iter_name_next (name, &iterator->dict_iter);
-
- return block_iter_name_step (iterator, name, 0);
-}
-
/* Perform a single step for a "match" block iterator, iterating
across symbol tables as needed. Returns the next symbol, or NULL
when iteration is complete. */
static struct symbol *
block_iter_match_step (struct block_iterator *iterator,
- const char *name,
- symbol_compare_ftype *compare,
+ const lookup_name_info &name,
int first)
{
struct symbol *sym;
block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust),
iterator->which);
- sym = dict_iter_match_first (BLOCK_DICT (block), name,
- compare, &iterator->dict_iter);
+ sym = mdict_iter_match_first (BLOCK_MULTIDICT (block), name,
+ &iterator->mdict_iter);
}
else
- sym = dict_iter_match_next (name, compare, &iterator->dict_iter);
+ sym = mdict_iter_match_next (name, &iterator->mdict_iter);
if (sym != NULL)
return sym;
struct symbol *
block_iter_match_first (const struct block *block,
- const char *name,
- symbol_compare_ftype *compare,
+ const lookup_name_info &name,
struct block_iterator *iterator)
{
initialize_block_iterator (block, iterator);
if (iterator->which == FIRST_LOCAL_BLOCK)
- return dict_iter_match_first (block->dict, name, compare,
- &iterator->dict_iter);
+ return mdict_iter_match_first (block->multidict, name,
+ &iterator->mdict_iter);
- return block_iter_match_step (iterator, name, compare, 1);
+ return block_iter_match_step (iterator, name, 1);
}
/* See block.h. */
struct symbol *
-block_iter_match_next (const char *name,
- symbol_compare_ftype *compare,
+block_iter_match_next (const lookup_name_info &name,
struct block_iterator *iterator)
{
if (iterator->which == FIRST_LOCAL_BLOCK)
- return dict_iter_match_next (name, compare, &iterator->dict_iter);
+ return mdict_iter_match_next (name, &iterator->mdict_iter);
- return block_iter_match_step (iterator, name, compare, 0);
+ return block_iter_match_step (iterator, name, 0);
}
/* See block.h.
struct symbol *
block_lookup_symbol (const struct block *block, const char *name,
+ symbol_name_match_type match_type,
const domain_enum domain)
{
struct block_iterator iter;
struct symbol *sym;
+ lookup_name_info lookup_name (name, match_type);
+
if (!BLOCK_FUNCTION (block))
{
- ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym)
+ struct symbol *other = NULL;
+
+ ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym)
{
+ if (SYMBOL_DOMAIN (sym) == domain)
+ return sym;
+ /* This is a bit of a hack, but symbol_matches_domain might ignore
+ STRUCT vs VAR domain symbols. So if a matching symbol is found,
+ make sure there is no "better" matching symbol, i.e., one with
+ exactly the same domain. PR 16253. */
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
SYMBOL_DOMAIN (sym), domain))
- return sym;
+ other = sym;
}
- return NULL;
+ return other;
}
else
{
list; this loop makes sure to take anything else other than
parameter symbols first; it only uses parameter symbols as a
last resort. Note that this only takes up extra computation
- time on a match. */
+ time on a match.
+ It's hard to define types in the parameter list (at least in
+ C/C++) so we don't do the same PR 16253 hack here that is done
+ for the !BLOCK_FUNCTION case. */
struct symbol *sym_found = NULL;
- ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym)
+ ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym)
{
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
SYMBOL_DOMAIN (sym), domain))
block_lookup_symbol_primary (const struct block *block, const char *name,
const domain_enum domain)
{
- struct symbol *sym;
- struct dict_iterator dict_iter;
+ struct symbol *sym, *other;
+ struct mdict_iterator mdict_iter;
+
+ lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
/* Verify BLOCK is STATIC_BLOCK or GLOBAL_BLOCK. */
gdb_assert (BLOCK_SUPERBLOCK (block) == NULL
|| BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) == NULL);
- for (sym = dict_iter_name_first (block->dict, name, &dict_iter);
+ other = NULL;
+ for (sym
+ = mdict_iter_match_first (block->multidict, lookup_name, &mdict_iter);
sym != NULL;
- sym = dict_iter_name_next (name, &dict_iter))
+ sym = mdict_iter_match_next (lookup_name, &mdict_iter))
{
+ if (SYMBOL_DOMAIN (sym) == domain)
+ return sym;
+
+ /* This is a bit of a hack, but symbol_matches_domain might ignore
+ STRUCT vs VAR domain symbols. So if a matching symbol is found,
+ make sure there is no "better" matching symbol, i.e., one with
+ exactly the same domain. PR 16253. */
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
SYMBOL_DOMAIN (sym), domain))
- return sym;
+ other = sym;
}
+ return other;
+}
+
+/* See block.h. */
+
+struct symbol *
+block_find_symbol (const struct block *block, const char *name,
+ const domain_enum domain,
+ block_symbol_matcher_ftype *matcher, void *data)
+{
+ struct block_iterator iter;
+ struct symbol *sym;
+
+ lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
+
+ /* Verify BLOCK is STATIC_BLOCK or GLOBAL_BLOCK. */
+ gdb_assert (BLOCK_SUPERBLOCK (block) == NULL
+ || BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) == NULL);
+
+ ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym)
+ {
+ /* MATCHER is deliberately called second here so that it never sees
+ a non-domain-matching symbol. */
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), domain)
+ && matcher (sym, data))
+ return sym;
+ }
return NULL;
}
+
+/* See block.h. */
+
+int
+block_find_non_opaque_type (struct symbol *sym, void *data)
+{
+ return !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym));
+}
+
+/* See block.h. */
+
+int
+block_find_non_opaque_type_preferred (struct symbol *sym, void *data)
+{
+ struct symbol **best = (struct symbol **) data;
+
+ if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
+ return 1;
+ *best = sym;
+ return 0;
+}
+
+/* See block.h. */
+
+struct blockranges *
+make_blockranges (struct objfile *objfile,
+ const std::vector<blockrange> &rangevec)
+{
+ struct blockranges *blr;
+ size_t n = rangevec.size();
+
+ blr = (struct blockranges *)
+ obstack_alloc (&objfile->objfile_obstack,
+ sizeof (struct blockranges)
+ + (n - 1) * sizeof (struct blockrange));
+
+ blr->nranges = n;
+ for (int i = 0; i < n; i++)
+ blr->range[i] = rangevec[i];
+ return blr;
+}
+