From: David Grove <groved@us.ibm.com>
Date: Wed, 8 Jan 2014 22:54:28 +0000 (-0500)
Subject: Fix find stackbottom on BlueGene P/Q systems
X-Git-Tag: gc7_4_2~40
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2dada7f07458061261dcb31a5d162f8de928a968;p=gc

Fix find stackbottom on BlueGene P/Q systems
(Use HEURISTIC2 instead of LINUX_STACKBOTTOM)

* include/private/gcconfig.h (NO_PTHREAD_GETATTR_NP, HEURISTIC2): Define
for BlueGene systems (instead of LINUX_STACKBOTTOM).
---

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index da99d06e..5bbf4940 100644
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -861,7 +861,14 @@
 #     define OS_TYPE "LINUX"
       /* HEURISTIC1 has been reliably reported to fail for a 32-bit     */
       /* executable on a 64 bit kernel.                                 */
-#     define LINUX_STACKBOTTOM
+#     if defined(__bg__)
+        /* The Linux Compute Node Kernel (used on BlueGene systems)     */
+        /* does not support LINUX_STACKBOTTOM way.                      */
+#       define HEURISTIC2
+#       define NO_PTHREAD_GETATTR_NP
+#     else
+#       define LINUX_STACKBOTTOM
+#     endif
 #     define DYNAMIC_LOADING
 #     define SEARCH_FOR_DATA_START
       extern int _end[];