/* Support routines for building symbol tables in GDB's internal format.
- Copyright (C) 1986-2004, 2007-2012 Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
the end, then we just toss the addrmap. */
static int pending_addrmap_interesting;
+/* An obstack used for allocating pending blocks. */
+
+static struct obstack pending_block_obstack;
+
+/* List of blocks already made (lexical contexts already closed).
+ This is used at the end to make the blockvector. */
+
+struct pending_block
+ {
+ struct pending_block *next;
+ struct block *block;
+ };
+
+/* Pointer to the head of a linked list of symbol blocks which have
+ already been finalized (lexical contexts already closed) and which
+ are just waiting to be built into a blockvector when finalizing the
+ associated symtab. */
+
+static struct pending_block *pending_blocks;
\f
static int compare_line_numbers (const void *ln1p, const void *ln2p);
void
free_pending_blocks (void)
{
- /* The links are made in the objfile_obstack, so we only need to
- reset PENDING_BLOCKS. */
- pending_blocks = NULL;
+ if (pending_blocks != NULL)
+ {
+ obstack_free (&pending_block_obstack, NULL);
+ pending_blocks = NULL;
+ }
}
/* Take one of the lists of symbols and make a block from it. Keep
{
struct pending_block *pblock;
+ if (pending_blocks == NULL)
+ obstack_init (&pending_block_obstack);
+
pblock = (struct pending_block *)
- obstack_alloc (&objfile->objfile_obstack, sizeof (struct pending_block));
+ obstack_alloc (&pending_block_obstack, sizeof (struct pending_block));
pblock->block = block;
if (opblock)
{
{
subfile->dirname = subfile->name;
subfile->name = xstrdup (name);
- last_source_file = name;
+ set_last_source_file (name);
/* Default the source language to whatever can be deduced from
the filename. If nothing can be deduced (such as for a C/C++
lowest address of objects in the file (or 0 if not known). */
void
-start_symtab (char *name, char *dirname, CORE_ADDR start_addr)
+start_symtab (const char *name, const char *dirname, CORE_ADDR start_addr)
{
restart_symtab (start_addr);
- last_source_file = name;
+ set_last_source_file (name);
start_subfile (name, dirname);
}
void
restart_symtab (CORE_ADDR start_addr)
{
- last_source_file = NULL;
+ set_last_source_file (NULL);
last_source_start_addr = start_addr;
file_symbols = NULL;
global_symbols = NULL;
static void
reset_symtab_globals (void)
{
- last_source_file = NULL;
+ set_last_source_file (NULL);
current_subfile = NULL;
pending_macros = NULL;
if (pending_addrmap)
file's text.
If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made
- expandable. */
+ expandable.
+
+ If REQUIRED is non-zero, then a symtab is created even if it does
+ not contain any symbols. */
struct block *
end_symtab_get_static_block (CORE_ADDR end_addr, struct objfile *objfile,
- int expandable)
+ int expandable, int required)
{
/* Finish the lexical context of the last function in the file; pop
the context stack. */
cleanup_undefined_stabs_types (objfile);
finish_global_stabs (objfile);
- if (pending_blocks == NULL
+ if (!required
+ && pending_blocks == NULL
&& file_symbols == NULL
&& global_symbols == NULL
&& have_line_numbers == 0
{
struct block *static_block;
- static_block = end_symtab_get_static_block (end_addr, objfile, 0);
+ static_block = end_symtab_get_static_block (end_addr, objfile, 0, 0);
return end_symtab_from_static_block (static_block, objfile, section, 0);
}
{
struct block *static_block;
- static_block = end_symtab_get_static_block (end_addr, objfile, 1);
+ static_block = end_symtab_get_static_block (end_addr, objfile, 1, 0);
return end_symtab_from_static_block (static_block, objfile, section, 1);
}
augment_type_symtab (struct objfile *objfile, struct symtab *primary_symtab)
{
struct blockvector *blockvector = primary_symtab->blockvector;
- int i;
if (context_stack_depth > 0)
{
new = &context_stack[context_stack_depth++];
new->depth = desc;
new->locals = local_symbols;
- new->params = param_symbols;
new->old_blocks = pending_blocks;
new->start_addr = valu;
new->using_directives = using_directives;
new->name = NULL;
local_symbols = NULL;
- param_symbols = NULL;
using_directives = NULL;
return new;
free_pendings = (*srclist);
}
\f
+
+/* Name of source file whose symbol data we are now processing. This
+ comes from a symbol of type N_SO for stabs. For Dwarf it comes
+ from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */
+
+static char *last_source_file;
+
+/* See buildsym.h. */
+
+void
+set_last_source_file (const char *name)
+{
+ xfree (last_source_file);
+ last_source_file = name == NULL ? NULL : xstrdup (name);
+}
+
+/* See buildsym.h. */
+
+const char *
+get_last_source_file (void)
+{
+ return last_source_file;
+}
+
+\f
+
/* Initialize anything that needs initializing when starting to read a
fresh piece of a symbol file, e.g. reading in the stuff
corresponding to a psymtab. */
global_symbols = NULL;
pending_blocks = NULL;
pending_macros = NULL;
+ using_directives = NULL;
/* We shouldn't have any address map at this point. */
gdb_assert (! pending_addrmap);