darkkirb/old-cross-binutils
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

[nto] Improve ABI sniffing.

Browse source 
Use qnx specific notes to figure out the OS.

gdb/ChangeLog:
	* gdb/nto-tdep.c (QNX_NOTE_NAME, QNX_INFO_SECT_NAME): New defines.
	(nto_sniff_abi_note_section): New function.
	(nto_elf_osabi_sniffer): Use new function to recognize nto specific
	binary.
This commit is contained in:
Aleksandar Ristovski 2015-10-21 10:37:33 -04:00
parent a9889169e5
commit d7161de46a
2 changed files with 52 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
gdb/ChangeLog
View file

@ -1,3 +1,10 @@
2015-10-21 Aleksandar Ristovski <aristovski@qnx.com>
* gdb/nto-tdep.c (QNX_NOTE_NAME, QNX_INFO_SECT_NAME): New defines.
(nto_sniff_abi_note_section): New function.
(nto_elf_osabi_sniffer): Use new function to recognize nto specific
binary.
2015-10-21 Aleksandar Ristovski <aristovski@qnx.com>
* nto-procfs.c (procfs_wait): Set stopped_flags nad stopped_pc.

48
gdb/nto-tdep.c
View file

@ -32,6 +32,9 @@
#include "gdbcore.h"
#include "objfiles.h"
#define QNX_NOTE_NAME "QNX"
#define QNX_INFO_SECT_NAME "QNX_info"
#ifdef __CYGWIN__
#include <sys/cygwin.h>
#endif
@ -332,12 +335,51 @@ nto_dummy_supply_regset (struct regcache *regcache, char *regs)
/* Do nothing. */
}
static void
nto_sniff_abi_note_section (bfd *abfd, asection *sect, void *obj)
{
const char *sectname;
unsigned int sectsize;
/* Buffer holding the section contents. */
char *note;
unsigned int namelen;
const char *name;
const unsigned sizeof_Elf_Nhdr = 12;
sectname = bfd_get_section_name (abfd, sect);
sectsize = bfd_section_size (abfd, sect);
if (sectsize > 128)
sectsize = 128;
if (sectname != NULL && strstr (sectname, QNX_INFO_SECT_NAME) != NULL)
*(enum gdb_osabi *) obj = GDB_OSABI_QNXNTO;
else if (sectname != NULL && strstr (sectname, "note") != NULL
&& sectsize > sizeof_Elf_Nhdr)
{
note = XNEWVEC (char, sectsize);
bfd_get_section_contents (abfd, sect, note, 0, sectsize);
namelen = (unsigned int) bfd_h_get_32 (abfd, note);
name = note + sizeof_Elf_Nhdr;
if (sectsize >= namelen + sizeof_Elf_Nhdr
&& namelen == sizeof (QNX_NOTE_NAME)
&& 0 == strcmp (name, QNX_NOTE_NAME))
*(enum gdb_osabi *) obj = GDB_OSABI_QNXNTO;
XDELETEVEC (note);
}
}
enum gdb_osabi
nto_elf_osabi_sniffer (bfd *abfd)
{
if (nto_is_nto_target)
return nto_is_nto_target (abfd);
return GDB_OSABI_UNKNOWN;
enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
bfd_map_over_sections (abfd,
nto_sniff_abi_note_section,
&osabi);
return osabi;
}
static const char *nto_thread_state_str[] =