9os

commit d7e4c85917c6e43fbc1ab25a3663c176c9605b56
parent 52172af3ceef434ab693cadcb3a5dd0a538ec441
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Thu, 15 Oct 2020 22:40:23 +0200

os9: Use memset() in crt.s

It simplifies the crt.

Change-Id: Ie28b8d8e77d96d782bff686e26bd81ad33adfd36

Diffstat:
M
src/os9/arch/arm64/crt.s
 | 
16
+++++-----------

1 file changed, 5 insertions(+), 11 deletions(-)
diff --git a/src/os9/arch/arm64/crt.s b/src/os9/arch/arm64/crt.s
@@ -41,17 +41,11 @@ EL1:
 	MOV	SP,X9
 	MOV	X29,0
 
-	LDR	X9,[X0,8]
-	LDR	X10,=edata
-	LDR	X11,=end
-	SUB	X11,X11,X10
-	LSR	X11,X11,3
-	SUB	X10,X10,X9
-
-1:
-	STR	XZR,[X10],8
-	SUB	X11,X11,1
-	CBNZ	X11,1b
+	ADR	X0,edata
+	MOV	X1,0
+	ADR	X2,end
+	SUB	X2,X2,X0
+	BL	memset
 
 	BL	imach
 	BL	icache