/* dwarf2dbg.c - DWARF2 debug support
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
/* Collects data for all line table entries during assembly. */
static struct line_seg *all_segs;
+/* Hash used to quickly lookup a segment by name, avoiding the need to search
+ through the all_segs list. */
+static struct hash_control *all_segs_hash;
+static struct line_seg **last_seg_ptr;
struct file_entry {
const char *filename;
static subsegT last_subseg;
static struct line_subseg *last_line_subseg;
- struct line_seg **ps, *s;
+ struct line_seg *s;
struct line_subseg **pss, *ss;
if (seg == last_seg && subseg == last_subseg)
return last_line_subseg;
- for (ps = &all_segs; (s = *ps) != NULL; ps = &s->next)
- if (s->seg == seg)
- goto found_seg;
-
- s = (struct line_seg *) xmalloc (sizeof (*s));
- s->next = NULL;
- s->seg = seg;
- s->head = NULL;
- *ps = s;
+ s = (struct line_seg *) hash_find (all_segs_hash, seg->name);
+ if (s == NULL)
+ {
+ s = (struct line_seg *) xmalloc (sizeof (*s));
+ s->next = NULL;
+ s->seg = seg;
+ s->head = NULL;
+ *last_seg_ptr = s;
+ last_seg_ptr = &s->next;
+ hash_insert (all_segs_hash, seg->name, s);
+ }
+ gas_assert (seg == s->seg);
- found_seg:
for (pss = &s->head; (ss = *pss) != NULL ; pss = &ss->next)
{
if (ss->subseg == subseg)
xrealloc (dirs, (dir + 32) * sizeof (const char *));
}
- dirs[dir] = xmalloc (dir_len + 1);
+ dirs[dir] = (char *) xmalloc (dir_len + 1);
memcpy (dirs[dir], filename, dir_len);
dirs[dir][dir_len] = '\0';
dirs_in_use = dir + 1;
symbol_set_value_now (info_end);
}
+void
+dwarf2_init (void)
+{
+ all_segs_hash = hash_new ();
+ last_seg_ptr = &all_segs;
+}
+
+
/* Finish the dwarf2 debug sections. We emit .debug.line if there
were any .file/.loc directives, or --gdwarf2 was given, or if the
file has a non-empty .debug_info section. If we emit .debug_line,