/* Read ELF (Executable and Linking Format) object files for GDB.
- Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "bfd.h"
#include "gdb_string.h"
#include "elf-bfd.h"
+#include "elf/common.h"
+#include "elf/internal.h"
#include "elf/mips.h"
#include "symtab.h"
#include "symfile.h"
struct elfinfo
{
- file_ptr dboffset; /* Offset to dwarf debug section */
- unsigned int dbsize; /* Size of dwarf debug section */
- file_ptr lnoffset; /* Offset to dwarf line number section */
- unsigned int lnsize; /* Size of dwarf line number section */
asection *stabsect; /* Section pointer for .stab section */
asection *stabindexsect; /* Section pointer for .stab.index section */
asection *mdebugsect; /* Section pointer for .mdebug section */
static void free_elfinfo (void *);
+/* Locate the segments in ABFD. */
+
+static struct symfile_segment_data *
+elf_symfile_segments (bfd *abfd)
+{
+ Elf_Internal_Phdr *phdrs, **segments;
+ long phdrs_size;
+ int num_phdrs, num_segments, num_sections, i;
+ asection *sect;
+ struct symfile_segment_data *data;
+
+ phdrs_size = bfd_get_elf_phdr_upper_bound (abfd);
+ if (phdrs_size == -1)
+ return NULL;
+
+ phdrs = alloca (phdrs_size);
+ num_phdrs = bfd_get_elf_phdrs (abfd, phdrs);
+ if (num_phdrs == -1)
+ return NULL;
+
+ num_segments = 0;
+ segments = alloca (sizeof (Elf_Internal_Phdr *) * num_phdrs);
+ for (i = 0; i < num_phdrs; i++)
+ if (phdrs[i].p_type == PT_LOAD)
+ segments[num_segments++] = &phdrs[i];
+
+ if (num_segments == 0)
+ return NULL;
+
+ data = XZALLOC (struct symfile_segment_data);
+ data->num_segments = num_segments;
+ data->segment_bases = XCALLOC (num_segments, CORE_ADDR);
+ data->segment_sizes = XCALLOC (num_segments, CORE_ADDR);
+
+ for (i = 0; i < num_segments; i++)
+ {
+ data->segment_bases[i] = segments[i]->p_vaddr;
+ data->segment_sizes[i] = segments[i]->p_memsz;
+ }
+
+ num_sections = bfd_count_sections (abfd);
+ data->segment_info = XCALLOC (num_sections, int);
+
+ for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next)
+ {
+ int j;
+ CORE_ADDR vma;
+
+ if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0)
+ continue;
+
+ vma = bfd_get_section_vma (abfd, sect);
+
+ for (j = 0; j < num_segments; j++)
+ if (segments[j]->p_memsz > 0
+ && vma >= segments[j]->p_vaddr
+ && vma < segments[j]->p_vaddr + segments[j]->p_memsz)
+ {
+ data->segment_info[i] = j + 1;
+ break;
+ }
+
+ if (bfd_get_section_size (sect) > 0 && j == num_segments)
+ warning (_("Loadable segment \"%s\" outside of ELF segments"),
+ bfd_section_name (abfd, sect));
+ }
+
+ return data;
+}
+
/* We are called once per section from elf_symfile_read. We
need to examine each section we are passed, check to see
if it is something we are interested in processing, and
struct elfinfo *ei;
ei = (struct elfinfo *) eip;
- if (strcmp (sectp->name, ".debug") == 0)
- {
- ei->dboffset = sectp->filepos;
- ei->dbsize = bfd_get_section_size (sectp);
- }
- else if (strcmp (sectp->name, ".line") == 0)
- {
- ei->lnoffset = sectp->filepos;
- ei->lnsize = bfd_get_section_size (sectp);
- }
- else if (strcmp (sectp->name, ".stab") == 0)
+ if (strcmp (sectp->name, ".stab") == 0)
{
ei->stabsect = sectp;
}
asection *bfd_section, struct objfile *objfile)
{
if (ms_type == mst_text || ms_type == mst_file_text)
- address = SMASH_TEXT_ADDRESS (address);
+ address = gdbarch_smash_text_address (current_gdbarch, address);
return prim_record_minimal_symbol_and_info
(name, address, ms_type, NULL, bfd_section->index, bfd_section, objfile);
continue;
}
+ /* Skip "special" symbols, e.g. ARM mapping symbols. These are
+ symbols which do not correspond to objects in the symbol table,
+ but have some other target-specific meaning. */
+ if (bfd_is_target_special_symbol (objfile->obfd, sym))
+ continue;
+
offset = ANOFFSET (objfile->section_offsets, sym->section->index);
if (dynamic
&& sym->section == &bfd_und_section
}
else if (sym->section->flags & SEC_CODE)
{
- if (sym->flags & BSF_GLOBAL)
+ if (sym->flags & (BSF_GLOBAL | BSF_WEAK))
{
ms_type = mst_text;
}
if (msym != NULL)
msym->filename = filesymname;
#endif
- ELF_MAKE_MSYMBOL_SPECIAL (sym, msym);
+ gdbarch_elf_make_msymbol_special (current_gdbarch, sym, msym);
}
}
}
We look for sections with specific names, to tell us what debug
format to look for: FIXME!!!
- dwarf_build_psymtabs() builds psymtabs for DWARF symbols;
elfstab_build_psymtabs() handles STABS symbols;
mdebug_build_psymtabs() handles ECOFF debugging information.
/* DWARF 2 sections */
dwarf2_build_psymtabs (objfile, mainline);
}
- else if (ei.dboffset && ei.lnoffset)
- {
- /* DWARF sections */
- dwarf_build_psymtabs (objfile,
- mainline,
- ei.dboffset, ei.dbsize,
- ei.lnoffset, ei.lnsize);
- }
/* FIXME: kettenis/20030504: This still needs to be integrated with
dwarf2read.c in a better way. */
elf_symfile_read, /* sym_read: read a symbol file into symtab */
elf_symfile_finish, /* sym_finish: finished with file, cleanup */
default_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */
+ elf_symfile_segments, /* sym_segments: Get segment information from
+ a file. */
NULL /* next: pointer to next struct sym_fns */
};
projects / deliverable / binutils-gdb.git / blobdiff