void
generic_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
{
enum gdb_osabi *osabi = obj;
const char *name;
unsigned int sectsize;
char *note;
name = bfd_get_section_name (abfd, sect);
sectsize = bfd_section_size (abfd, sect);
/* Limit the amount of data to read. */
if (sectsize > MAX_NOTESZ)
sectsize = MAX_NOTESZ;
/* We lazily read the section data here. Since we use
BFD_DECOMPRESS, we can't use bfd_get_section_contents on a
compressed section. But, since note sections are not compressed,
deferring the reading until we recognize the section avoids any
error. */
note = alloca (sectsize);
/* .note.ABI-tag notes, used by GNU/Linux and FreeBSD. */
if (strcmp (name, ".note.ABI-tag") == 0)
{
/* GNU. */
if (check_note (abfd, sect, note, §size, "GNU", 16, NT_GNU_ABI_TAG))
{
unsigned int abi_tag = bfd_h_get_32 (abfd, note + 16);
switch (abi_tag)
{
case GNU_ABI_TAG_LINUX:
*osabi = GDB_OSABI_LINUX;
break;
case GNU_ABI_TAG_HURD:
*osabi = GDB_OSABI_HURD;
break;
case GNU_ABI_TAG_SOLARIS:
*osabi = GDB_OSABI_SOLARIS;
break;
case GNU_ABI_TAG_FREEBSD:
*osabi = GDB_OSABI_FREEBSD_ELF;
break;
case GNU_ABI_TAG_NETBSD:
*osabi = GDB_OSABI_NETBSD_ELF;
break;
default:
internal_error (__FILE__, __LINE__,
_("generic_elf_osabi_sniff_abi_tag_sections: "
"unknown OS number %d"),
abi_tag);
}
return;
}
/* FreeBSD. */
if (check_note (abfd, sect, note, §size, "FreeBSD", 4,
NT_FREEBSD_ABI_TAG))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_FREEBSD_ELF;
return;
}
return;
}
/* .note.netbsd.ident notes, used by NetBSD. */
if (strcmp (name, ".note.netbsd.ident") == 0
&& check_note (abfd, sect, note, §size, "NetBSD", 4, NT_NETBSD_IDENT))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_NETBSD_ELF;
return;
}
/* .note.openbsd.ident notes, used by OpenBSD. */
if (strcmp (name, ".note.openbsd.ident") == 0
&& check_note (abfd, sect, note, §size, "OpenBSD", 4,
NT_OPENBSD_IDENT))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_OPENBSD_ELF;
return;
}
/* .note.netbsdcore.procinfo notes, used by NetBSD. */
if (strcmp (name, ".note.netbsdcore.procinfo") == 0)
{
*osabi = GDB_OSABI_NETBSD_ELF;
return;
}
}
void
generic_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
{
enum gdb_osabi *osabi = obj;
const char *name;
unsigned int sectsize;
char *note;
name = bfd_get_section_name (abfd, sect);
sectsize = bfd_section_size (abfd, sect);
/* Limit the amount of data to read. */
if (sectsize > MAX_NOTESZ)
sectsize = MAX_NOTESZ;
note = alloca (sectsize);
bfd_get_section_contents (abfd, sect, note, 0, sectsize);
/* .note.ABI-tag notes, used by GNU/Linux and FreeBSD. */
if (strcmp (name, ".note.ABI-tag") == 0)
{
/* GNU. */
if (check_note (abfd, sect, note, "GNU", 16, NT_GNU_ABI_TAG))
{
unsigned int abi_tag = bfd_h_get_32 (abfd, note + 16);
switch (abi_tag)
{
case GNU_ABI_TAG_LINUX:
*osabi = GDB_OSABI_LINUX;
break;
case GNU_ABI_TAG_HURD:
*osabi = GDB_OSABI_HURD;
break;
case GNU_ABI_TAG_SOLARIS:
*osabi = GDB_OSABI_SOLARIS;
break;
case GNU_ABI_TAG_FREEBSD:
*osabi = GDB_OSABI_FREEBSD_ELF;
break;
case GNU_ABI_TAG_NETBSD:
*osabi = GDB_OSABI_NETBSD_ELF;
break;
default:
internal_error (__FILE__, __LINE__,
_("generic_elf_osabi_sniff_abi_tag_sections: "
"unknown OS number %d"),
abi_tag);
}
return;
}
/* FreeBSD. */
if (check_note (abfd, sect, note, "FreeBSD", 4, NT_FREEBSD_ABI_TAG))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_FREEBSD_ELF;
return;
}
/* DragonFly. */
if (check_note (abfd, sect, note, "DragonFly", 4, NT_DRAGONFLY_ABI_TAG))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_DRAGONFLY;
return;
}
return;
}
/* .note.netbsd.ident notes, used by NetBSD. */
if (strcmp (name, ".note.netbsd.ident") == 0
&& check_note (abfd, sect, note, "NetBSD", 4, NT_NETBSD_IDENT))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_NETBSD_ELF;
return;
}
/* .note.openbsd.ident notes, used by OpenBSD. */
if (strcmp (name, ".note.openbsd.ident") == 0
&& check_note (abfd, sect, note, "OpenBSD", 4, NT_OPENBSD_IDENT))
{
/* There is no need to check the version yet. */
*osabi = GDB_OSABI_OPENBSD_ELF;
return;
}
/* .note.netbsdcore.procinfo notes, used by NetBSD. */
if (strcmp (name, ".note.netbsdcore.procinfo") == 0)
{
*osabi = GDB_OSABI_NETBSD_ELF;
return;
}
}