9os

commit a0a2f269223cbdd4ad43ec234304ed80b920a89f
parent 9c890abb26d15ec43a76e5e799390568d71baa29
Author: Dimitris Papastamos <dimitris.papastamos@arm.com>
Date:   Wed, 21 Nov 2018 16:37:15 +0000

[arm64] Fixup crt-linux.s

Use kernel provided stack and setup argc, argv and environ as needed.

Change-Id: Iebb619bdd093a83895341ec93ae4614af0132aef
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Diffstat:
M
arch/arm64/crt-linux.s
 | 
20
+++++++++++---------

1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/crt-linux.s b/arch/arm64/crt-linux.s
@@ -1,14 +1,16 @@
+	.bss
+	.globl	_environ
+_environ:
+	.quad	0
+
 	.text
 	.globl	_start
 _start:
-	ldr	x0,=stackend
-	mov	sp,x0
-
+	ldr	x0,[sp]
+	add	x1,sp,#8
+	add	x2,x1,x0,lsl #3
+	add	x2,x2,#8
+	adr	x3,_environ
+	str	x2,[x3]
 	bl	main
 	b	exit
-
-	.data
-	.align	12
-stack:	.space	3072
-stackend:
-bss:	.space 4096 - (stackend - stack)