9os

commit 89be825fbc2d143f006e6befc34f8e54fd79829c
parent 90807ab446c846b051f45a6bc164553c989e157f
Author: Dimitris Papastamos <dimitris.papastamos@arm.com>
Date:   Wed, 17 Oct 2018 11:46:22 +0100

[arm64] Move load address to callee-saved x19

x30 can get clobbered.

Change-Id: Ie22b9578fee450f31f763e59004699132363216c
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Diffstat:
M
arch/arm64/crt-none.s
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/crt-none.s b/arch/arm64/crt-none.s
@@ -8,6 +8,7 @@ _start:
 	bl	getpc
 getpc:
 	sub	x30,x30,4
+	mov	x19,x30
 
 	ldr	x0,=SRAMADDR
 	mov	x1,#SRAMSIZE
@@ -25,7 +26,7 @@ getpc:
 	stp	xzr,xzr,[sp,#-16]!
 	mov	x29,sp
 
-	mov	x0,x30
+	mov	x0,x19
 	ldr	x1,=SRAMADDR
 	mov	x2,#SRAMSIZE
 	bl	main