/* DWARF debugging format support for GDB.
- Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support. Portions based on dbxread.c,
mipsread.c, coffread.c, and dwarfread.c from a Data General SVR4 gdb port.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
#include "complaints.h"
#include <fcntl.h>
-#include <string.h>
+#include "gdb_string.h"
#ifndef NO_SYS_FILE
#include <sys/file.h>
#endif
-/* FIXME -- convert this to SEEK_SET a la POSIX, move to config files. */
-#ifndef L_SET
-#define L_SET 0
-#endif
-
/* Some macros to provide DIE info for complaints. */
#define DIE_ID (curdie!=NULL ? curdie->die_ref : 0)
static int dbroff; /* Relative offset from start of .debug section */
static char *lnbase; /* Base pointer to line section */
static int isreg; /* Kludge to identify register variables */
+static int optimized_out; /* Kludge to identify optimized out variables */
/* Kludge to identify basereg references. Nonzero if we have an offset
relative to a basereg. */
static int offreg;
dbsize = dbfsize;
dbbase = xmalloc (dbsize);
dbroff = 0;
- if ((bfd_seek (abfd, dbfoff, L_SET) != 0) ||
+ if ((bfd_seek (abfd, dbfoff, SEEK_SET) != 0) ||
(bfd_read (dbbase, dbsize, 1, abfd) != dbsize))
{
free (dbbase);
Given pointer to a string of bytes that define a location, compute
the location and return the value.
+ A location description containing no atoms indicates that the
+ object is optimized out. The global optimized_out flag is set for
+ those, the return value is meaningless.
When computing values involving the current value of the frame pointer,
the value zero is used, which results in a value relative to the frame
stack[stacki] = 0;
isreg = 0;
offreg = 0;
+ optimized_out = 1;
loc_value_size = TARGET_FT_LONG_SIZE (current_objfile);
while (loc < end)
{
+ optimized_out = 0;
loc_atom_code = target_to_host (loc, SIZEOF_LOC_ATOM_CODE, GET_UNSIGNED,
current_objfile);
loc += SIZEOF_LOC_ATOM_CODE;
foffset = DBFOFF(pst) + dbroff;
base_section_offsets = pst->section_offsets;
baseaddr = ANOFFSET (pst->section_offsets, 0);
- if (bfd_seek (abfd, foffset, L_SET) ||
+ if (bfd_seek (abfd, foffset, SEEK_SET) ||
(bfd_read (dbbase, dbsize, 1, abfd) != dbsize))
{
free (dbbase);
lnbase = NULL;
if (LNFOFF (pst))
{
- if (bfd_seek (abfd, LNFOFF (pst), L_SET) ||
+ if (bfd_seek (abfd, LNFOFF (pst), SEEK_SET) ||
(bfd_read ((PTR) lnsizedata, sizeof (lnsizedata), 1, abfd) !=
sizeof (lnsizedata)))
{
lnsize = target_to_host (lnsizedata, SIZEOF_LINETBL_LENGTH,
GET_UNSIGNED, pst -> objfile);
lnbase = xmalloc (lnsize);
- if (bfd_seek (abfd, LNFOFF (pst), L_SET) ||
+ if (bfd_seek (abfd, LNFOFF (pst), SEEK_SET) ||
(bfd_read (lnbase, lnsize, 1, abfd) != lnsize))
{
free (lnbase);
{
SYMBOL_VALUE (sym) = locval (dip -> at_location);
add_symbol_to_list (sym, list_in_scope);
- if (isreg)
+ if (optimized_out)
+ {
+ SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
+ }
+ else if (isreg)
{
SYMBOL_CLASS (sym) = LOC_REGISTER;
}