From: Julian Seward <jseward@acm.org>
Date: Tue, 28 Feb 2006 13:05:00 +0000 (+0000)
Subject: Partial merge of r5662 (Fix CPU feature identification for ppc32)
X-Git-Tag: svn/VALGRIND_3_1_1~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cdc6921041d4714428bbbc5fd7931d4c62a34446;p=thirdparty%2Fvalgrind.git

Partial merge of r5662 (Fix CPU feature identification for ppc32)


git-svn-id: svn://svn.valgrind.org/valgrind/branches/VALGRIND_3_1_BRANCH@5703
---

diff --git a/coregrind/m_machine.c b/coregrind/m_machine.c
index 8c3d096935..8b0469ac31 100644
--- a/coregrind/m_machine.c
+++ b/coregrind/m_machine.c
@@ -341,8 +341,12 @@ Bool VG_(machine_get_hwcaps)( void )
      VG_(sigaction)(VKI_SIGILL, NULL, &saved_act);
      tmp_act = saved_act;
 
+     /* NODEFER: signal handler does not return (from the kernel's
+        point of view), hence if it is to successfully catch a signal
+        more than once, we need the NODEFER flag. */
      tmp_act.sa_flags &= ~VKI_SA_RESETHAND;
      tmp_act.sa_flags &= ~VKI_SA_SIGINFO;
+     tmp_act.sa_flags |=  VKI_SA_NODEFER;
 
      tmp_act.ksa_handler = handler_sigill;
      VG_(sigaction)(VKI_SIGILL, &tmp_act, NULL);