Experimental parser: merge to r19637

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index 3c62909b7513270e9191abe0613f871a967c6c61..c91cf241960d5a245abca3f8277c43c32e27d951 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -25,9 +25,9 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Platform specific code for POSIX goes here. This is not a platform on its
-// own but contains the parts which are the same across POSIX platforms Linux,
-// Mac OS, FreeBSD and OpenBSD.
+// Platform-specific code for POSIX goes here. This is not a platform on its
+// own, but contains the parts which are the same across the POSIX platforms
+// Linux, MacOS, FreeBSD, OpenBSD, NetBSD and QNX.
 
 #include <dlfcn.h>
 #include <pthread.h>
@@ -265,10 +265,10 @@ void OS::Sleep(int milliseconds) {
 
 
 void OS::Abort() {
-  // Redirect to std abort to signal abnormal program termination.
-  if (FLAG_break_on_abort) {
-    DebugBreak();
+  if (FLAG_hard_abort) {
+    V8_IMMEDIATE_CRASH();
   }
+  // Redirect to std abort to signal abnormal program termination.
   abort();
 }
 
@@ -276,6 +276,8 @@ void OS::Abort() {
 void OS::DebugBreak() {
 #if V8_HOST_ARCH_ARM
   asm("bkpt 0");
+#elif V8_HOST_ARCH_A64
+  asm("brk 0");
 #elif V8_HOST_ARCH_MIPS
   asm("break");
 #elif V8_HOST_ARCH_IA32