/* Read ELF (Executable and Linking Format) object files for GDB.
- Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
This file is part of GDB.
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 "defs.h"
#include "bfd.h"
-#include <string.h>
-#include "libelf.h"
+#include "gdb_string.h"
+#include "elf-bfd.h"
#include "elf/mips.h"
#include "symtab.h"
#include "symfile.h"
static void
free_elfinfo PARAMS ((void *));
-static struct section_offsets *
-elf_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
-
static struct minimal_symbol *
record_minimal_symbol_and_info PARAMS ((char *, CORE_ADDR,
enum minimal_symbol_type, char *,
break;
}
- name = obsavestring (name, strlen (name), &objfile -> symbol_obstack);
return prim_record_minimal_symbol_and_info
(name, address, ms_type, info, section, objfile);
}
SYNOPSIS
void elf_symtab_read (bfd *abfd, CORE_ADDR addr,
- struct objfile *objfile)
+ struct objfile *objfile, int dynamic)
DESCRIPTION
asymbol *filesym = 0;
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
/* Name of filesym, as saved on the symbol_obstack. */
- char *filesymname;
+ char *filesymname = obsavestring ("", 0, &objfile->symbol_obstack);
#endif
struct dbx_symfile_info *dbx = (struct dbx_symfile_info *)
objfile->sym_stab_info;
continue;
}
- if (sym -> section == &bfd_und_section
+ if (dynamic
+ && sym -> section == &bfd_und_section
&& (sym -> flags & BSF_FUNCTION))
{
+ struct minimal_symbol *msym;
+
/* Symbol is a reference to a function defined in
a shared library.
If its value is non zero then it is usually the address
relative to the base address.
If its value is zero then the dynamic linker has to resolve
the symbol. We are unable to find any meaningful address
- for this symbol in the executable file, so we skip it.
- Irix 5 has a zero value for all shared library functions
- in the main symbol table, but the dynamic symbol table
- provides the right values. */
+ for this symbol in the executable file, so we skip it. */
symaddr = sym -> value;
if (symaddr == 0)
continue;
symaddr += addr;
- record_minimal_symbol_and_info ((char *) sym -> name, symaddr,
- mst_solib_trampoline, NULL,
- objfile);
+ msym = record_minimal_symbol_and_info
+ ((char *) sym -> name, symaddr,
+ mst_solib_trampoline, NULL, objfile);
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ if (msym != NULL)
+ msym->filename = filesymname;
+#endif
continue;
}
default:
ms_type = mst_abs;
}
+
+ /* If it is an Irix dynamic symbol, skip section name
+ symbols, relocate all others. */
+ if (ms_type != mst_abs)
+ {
+ if (sym->name[0] == '.')
+ continue;
+ symaddr += addr;
+ }
}
else if (sym -> section -> flags & SEC_CODE)
{
}
else if ((sym->name[0] == '.' && sym->name[1] == 'L')
|| ((sym -> flags & BSF_LOCAL)
- && sym->name[0] == 'L'
+ && sym->name[0] == '$'
&& sym->name[1] == 'L'))
/* Looks like a compiler-generated label. Skip it.
The assembler should be skipping these (to keep
should be harmless (but I encourage people to fix this
in the assembler instead of adding checks here). */
continue;
+#ifdef HARRIS_TARGET
+ else if (sym->name[0] == '.' && sym->name[1] == '.')
+ {
+ /* Looks like a Harris compiler generated label for the
+ purpose of marking instructions that are relevant to
+ DWARF dies. The assembler can't get rid of these
+ because they are relocatable addresses that the
+ linker needs to resolve. */
+ continue;
+ }
+#endif
else
{
ms_type = mst_file_text;
((char *) sym -> name, symaddr,
ms_type, (PTR) size, objfile);
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
- msym->filename = filesymname;
+ if (msym != NULL)
+ msym->filename = filesymname;
#endif
}
}
special ELF sections. We first have to find them... */
bfd_map_over_sections (abfd, elf_locate_sections, (PTR) &ei);
- if (ei.dboffset && ei.lnoffset)
+ if (dwarf2_has_info (abfd))
+ {
+ /* DWARF 2 sections */
+ dwarf2_build_psymtabs (objfile, section_offsets, mainline);
+ }
+ else if (ei.dboffset && ei.lnoffset)
{
/* DWARF sections */
dwarf_build_psymtabs (objfile,
just a stub. */
static void
-elf_symfile_init (ignore)
- struct objfile *ignore;
-{
-}
-
-/* ELF specific parsing routine for section offsets.
-
- Plain and simple for now. */
-
-static
-struct section_offsets *
-elf_symfile_offsets (objfile, addr)
+elf_symfile_init (objfile)
struct objfile *objfile;
- CORE_ADDR addr;
{
- struct section_offsets *section_offsets;
- int i;
-
- objfile->num_sections = SECT_OFF_MAX;
- section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile -> psymbol_obstack,
- sizeof (struct section_offsets)
- + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1));
-
- for (i = 0; i < SECT_OFF_MAX; i++)
- ANOFFSET (section_offsets, i) = addr;
-
- return section_offsets;
+ /* ELF objects may be reordered, so set OBJF_REORDERED. If we
+ find this causes a significant slowdown in gdb then we could
+ set it in the debug symbol readers only when necessary. */
+ objfile->flags |= OBJF_REORDERED;
}
-\f
+
/* When handling an ELF file that contains Sun STABS debug info,
some of the debug info is relative to the particular chunk of the
section that was generated in its individual .o file. E.g.
elf_symfile_init, /* sym_init: read initial info, setup for sym_read() */
elf_symfile_read, /* sym_read: read a symbol file into symtab */
elf_symfile_finish, /* sym_finish: finished with file, cleanup */
- elf_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */
+ default_symfile_offsets,
+ /* sym_offsets: Translate ext. to int. relocation */
NULL /* next: pointer to next struct sym_fns */
};
projects / deliverable / binutils-gdb.git / blobdiff