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* sparc-nat.c (sparc_xfer_wcookie): Try to fetch the cookie using

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the PT_WCOOKIE request.
This commit is contained in:
Mark Kettenis 2004-02-08 21:25:41 +00:00
parent 58dfe9ff59
commit 645d6d1047
2 changed files with 31 additions and 2 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2004-02-08 Mark Kettenis <kettenis@gnu.org>
* sparc-nat.c (sparc_xfer_wcookie): Try to fetch the cookie using
the PT_WCOOKIE request.
2004-02-08 Andrew Cagney <cagney@redhat.com>
* mips-tdep.c (mips_unwind_pc): New function.

28
gdb/sparc-nat.c
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@ -270,8 +270,32 @@ sparc_xfer_wcookie (struct target_ops *ops, enum target_object object,
/* If PT_WCOOKIE is defined (by <sys/ptrace.h>), assume we're
running on an OpenBSD release that uses StackGhost (3.1 or
later). As of release 3.4, OpenBSD doesn't use a randomized
cookie yet. */
wcookie = 0x3;
cookie yet, but a future release probably will. */
{
int pid;
pid = TIDGET (inferior_ptid);
if (pid == 0)
pid = PIDGET (inferior_ptid);
/* Sanity check. The proper type for a cookie is register_t, but
we can't assume that this type exists on all systems supported
by the code in this file. */
gdb_assert (sizeof (wcookie) == sizeof (register_t));
/* Fetch the cookie. */
if (ptrace (PT_WCOOKIE, pid, (PTRACE_ARG3_TYPE) &wcookie, 0) == -1)
{
if (errno != EINVAL)
perror_with_name ("Couldn't get StackGhost cookie");
/* Although PT_WCOOKIE is defined on OpenBSD 3.1 and later,
the request wasn't implemented until after OpenBSD 3.4. If
the kernel doesn't support the PT_WCOOKIE request, assume
we're running on a kernel that uses non-randomized cookies. */
wcookie = 0x3;
}
}
#endif /* PT_WCOOKIE */
if (len > sizeof (unsigned long) - offset)