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List: busybox-cvs
Subject: svn commit: trunk/busybox/arch/i386
From: vda () busybox ! net (vda at busybox ! net)
Date: 2007-07-23 21:05:07
Message-ID: 20070723210507.B3350A6817 () busybox ! net
[Download RAW message or body]
Author: vda
Date: 2007-07-23 14:05:06 -0700 (Mon, 23 Jul 2007)
New Revision: 19240
Log:
add comment why preferred stack boundary is 4 on i386
Modified:
trunk/busybox/arch/i386/Makefile
Changeset:
Modified: trunk/busybox/arch/i386/Makefile
===================================================================
--- trunk/busybox/arch/i386/Makefile 2007-07-23 19:05:43 UTC (rev 19239)
+++ trunk/busybox/arch/i386/Makefile 2007-07-23 21:05:06 UTC (rev 19240)
@@ -2,4 +2,6 @@
# Build system
# ==========================================================================
+# -mpreferred-stack-boundary=2 is essential in preventing gcc 4.2.x
+# from aligning stack to 16 bytes. (Which is gcc's way of supporting SSE).
CFLAGS += $(call cc-option,-march=i386 -mpreferred-stack-boundary=2,)
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