[src/trunk]: src/lib/csu/arch/earm Thumbify

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6bed676bd8ee
branches:  trunk
changeset: 789508:6bed676bd8ee
user:      matt <matt%NetBSD.org@localhost>
date:      Wed Aug 21 03:03:02 2013 +0000

description:
Thumbify

diffstat:

 lib/csu/arch/earm/crt0.S |  11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diffs (33 lines):

diff -r 7563cd09b78d -r 6bed676bd8ee lib/csu/arch/earm/crt0.S
--- a/lib/csu/arch/earm/crt0.S  Wed Aug 21 03:00:56 2013 +0000
+++ b/lib/csu/arch/earm/crt0.S  Wed Aug 21 03:03:02 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: crt0.S,v 1.1 2012/08/13 02:49:04 matt Exp $    */
+/*     $NetBSD: crt0.S,v 1.2 2013/08/21 03:03:02 matt Exp $    */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <arm/asm.h>
 
-RCSID("$NetBSD: crt0.S,v 1.1 2012/08/13 02:49:04 matt Exp $")
+RCSID("$NetBSD: crt0.S,v 1.2 2013/08/21 03:03:02 matt Exp $")
 
 STRONG_ALIAS(_start,__start)
 
@@ -44,7 +44,14 @@
        mov     r2, ip          /* tmp -> ps_strings */
 
        /* Ensure the stack is properly aligned before calling C code. */
+#if !defined(__thumb__) || defined(_ARM_ARCH_T2)
        bic     sp, sp, #7
+#else
+       movs    r6, #7
+       mov     r7, sp
+       bics    r7, r7, r6
+       mov     sp, r7
+#endif
 
        /*
         * void ___start(void (*cleanup)(void),