/* rddbg.c -- Read debugging information into a generic form.
- Copyright (C) 1995 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@cygnus.com>.
This file is part of GNU Binutils.
#include "budbg.h"
static boolean read_section_stabs_debugging_info
- PARAMS ((bfd *, PTR, boolean *));
+ PARAMS ((bfd *, asymbol **, long, PTR, boolean *));
+static boolean read_symbol_stabs_debugging_info
+ PARAMS ((bfd *, asymbol **, long, PTR, boolean *));
+static boolean read_ieee_debugging_info PARAMS ((bfd *, PTR, boolean *));
+static void save_stab PARAMS ((int, int, bfd_vma, const char *));
+static void stab_context PARAMS ((void));
+static void free_saved_stabs PARAMS ((void));
/* Read debugging information from a BFD. Returns a generic debugging
pointer. */
PTR
-read_debugging_info (abfd)
+read_debugging_info (abfd, syms, symcount)
bfd *abfd;
+ asymbol **syms;
+ long symcount;
{
PTR dhandle;
boolean found;
if (dhandle == NULL)
return NULL;
- /* All we know about right now is stabs in sections. */
+ /* All we know about right now is stabs. */
- if (! read_section_stabs_debugging_info (abfd, dhandle, &found))
+ if (! read_section_stabs_debugging_info (abfd, syms, symcount, dhandle,
+ &found))
return NULL;
+ if (bfd_get_flavour (abfd) == bfd_target_aout_flavour)
+ {
+ if (! read_symbol_stabs_debugging_info (abfd, syms, symcount, dhandle,
+ &found))
+ return NULL;
+ }
+
+ if (bfd_get_flavour (abfd) == bfd_target_ieee_flavour)
+ {
+ if (! read_ieee_debugging_info (abfd, dhandle, &found))
+ return NULL;
+ }
+
if (! found)
{
fprintf (stderr, "%s: no recognized debugging information\n",
/* Read stabs in sections debugging information from a BFD. */
static boolean
-read_section_stabs_debugging_info (abfd, dhandle, pfound)
+read_section_stabs_debugging_info (abfd, syms, symcount, dhandle, pfound)
bfd *abfd;
+ asymbol **syms;
+ long symcount;
PTR dhandle;
boolean *pfound;
{
if (shandle == NULL)
{
- shandle = start_stab (dhandle);
+ shandle = start_stab (dhandle, abfd, true, syms, symcount);
if (shandle == NULL)
return false;
}
f = s;
}
+ save_stab (type, desc, value, s);
+
if (! parse_stab (dhandle, shandle, type, desc, value, s))
- return false;
+ {
+ stab_context ();
+ free_saved_stabs ();
+ return false;
+ }
/* Don't free f, since I think the stabs code
expects strings to hang around. This should be
}
}
+ free_saved_stabs ();
free (stabs);
/* Don't free strings, since I think the stabs code expects
return true;
}
+
+/* Read stabs in the symbol table. */
+
+static boolean
+read_symbol_stabs_debugging_info (abfd, syms, symcount, dhandle, pfound)
+ bfd *abfd;
+ asymbol **syms;
+ long symcount;
+ PTR dhandle;
+ boolean *pfound;
+{
+ PTR shandle;
+ asymbol **ps, **symend;
+
+ shandle = NULL;
+ symend = syms + symcount;
+ for (ps = syms; ps < symend; ps++)
+ {
+ symbol_info i;
+
+ bfd_get_symbol_info (abfd, *ps, &i);
+
+ if (i.type == '-')
+ {
+ const char *s;
+ char *f;
+
+ if (shandle == NULL)
+ {
+ shandle = start_stab (dhandle, abfd, false, syms, symcount);
+ if (shandle == NULL)
+ return false;
+ }
+
+ *pfound = true;
+
+ s = i.name;
+ while (s[strlen (s) - 1] == '\\'
+ && ps + 1 < symend)
+ {
+ char *sc, *n;
+
+ ++ps;
+ sc = xstrdup (s);
+ sc[strlen (sc) - 1] = '\0';
+ n = concat (sc, bfd_asymbol_name (*ps), (const char *) NULL);
+ free (sc);
+ if (f != NULL)
+ free (f);
+ f = n;
+ s = n;
+ }
+
+ save_stab (i.stab_type, i.stab_desc, i.value, s);
+
+ if (! parse_stab (dhandle, shandle, i.stab_type, i.stab_desc,
+ i.value, s))
+ {
+ stab_context ();
+ free_saved_stabs ();
+ return false;
+ }
+
+ free_saved_stabs ();
+
+ /* Don't free f, since I think the stabs code expects
+ strings to hang around. This should be straightened out.
+ FIXME. */
+ }
+ }
+
+ if (shandle != NULL)
+ {
+ if (! finish_stab (dhandle, shandle))
+ return false;
+ }
+
+ return true;
+}
+
+/* Read IEEE debugging information. */
+
+static boolean
+read_ieee_debugging_info (abfd, dhandle, pfound)
+ bfd *abfd;
+ PTR dhandle;
+ boolean *pfound;
+{
+ asection *dsec;
+ bfd_size_type size;
+ bfd_byte *contents;
+
+ /* The BFD backend puts the debugging information into a section
+ named .debug. */
+
+ dsec = bfd_get_section_by_name (abfd, ".debug");
+ if (dsec == NULL)
+ return true;
+
+ size = bfd_section_size (abfd, dsec);
+ contents = (bfd_byte *) xmalloc (size);
+ if (! bfd_get_section_contents (abfd, dsec, contents, 0, size))
+ return false;
+
+ if (! parse_ieee (dhandle, abfd, contents, size))
+ return false;
+
+ free (contents);
+
+ *pfound = true;
+
+ return true;
+}
+\f
+/* Record stabs strings, so that we can give some context for errors. */
+
+#define SAVE_STABS_COUNT (16)
+
+struct saved_stab
+{
+ int type;
+ int desc;
+ bfd_vma value;
+ char *string;
+};
+
+static struct saved_stab saved_stabs[SAVE_STABS_COUNT];
+static int saved_stabs_index;
+
+/* Save a stabs string. */
+
+static void
+save_stab (type, desc, value, string)
+ int type;
+ int desc;
+ bfd_vma value;
+ const char *string;
+{
+ if (saved_stabs[saved_stabs_index].string != NULL)
+ free (saved_stabs[saved_stabs_index].string);
+ saved_stabs[saved_stabs_index].type = type;
+ saved_stabs[saved_stabs_index].desc = desc;
+ saved_stabs[saved_stabs_index].value = value;
+ saved_stabs[saved_stabs_index].string = xstrdup (string);
+ saved_stabs_index = (saved_stabs_index + 1) % SAVE_STABS_COUNT;
+}
+
+/* Provide context for an error. */
+
+static void
+stab_context ()
+{
+ int i;
+
+ fprintf (stderr, "Last stabs entries before error:\n");
+ fprintf (stderr, "n_type n_desc n_value string\n");
+
+ i = saved_stabs_index;
+ do
+ {
+ struct saved_stab *stabp;
+
+ stabp = saved_stabs + i;
+ if (stabp->string != NULL)
+ {
+ const char *s;
+
+ s = bfd_get_stab_name (stabp->type);
+ if (s != NULL)
+ fprintf (stderr, "%-6s", s);
+ else if (stabp->type == 0)
+ fprintf (stderr, "HdrSym");
+ else
+ fprintf (stderr, "%-6d", stabp->type);
+ fprintf (stderr, " %-6d ", stabp->desc);
+ fprintf_vma (stderr, stabp->value);
+ if (stabp->type != 0)
+ fprintf (stderr, " %s", stabp->string);
+ fprintf (stderr, "\n");
+ }
+ i = (i + 1) % SAVE_STABS_COUNT;
+ }
+ while (i != saved_stabs_index);
+}
+
+/* Free the saved stab strings. */
+
+static void
+free_saved_stabs ()
+{
+ int i;
+
+ for (i = 0; i < SAVE_STABS_COUNT; i++)
+ if (saved_stabs[i].string != NULL)
+ free (saved_stabs[i].string);
+ saved_stabs_index = 0;
+}
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