9os

commit ac71c050b4623f0182157b9d77163ae5f30caf91
parent 22f61822f8de3b0785d0039686f5819a42b05fc7
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Wed, 23 Nov 2022 22:28:37 +0100

os9/arm64: Don't use SP_EL1 in EL1

SP_EL1 only can be used in EL2 and EL3.

Diffstat:
M
src/os9/arch/arm64/arch.s
 | 
6
+++---

1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/os9/arch/arm64/arch.s b/src/os9/arch/arm64/arch.s
@@ -124,7 +124,7 @@ getctx:
 	STP	X9,X10,[X0,#16*16]
 
 	MRS	X9,SP_EL0
-	MRS	X10,SP_EL1
+	MOV	X10,SP
 	STP	X9,X10,[x0,#16*17]
 
 	MRS	X9,FAR_EL1
@@ -162,7 +162,7 @@ EXCEPTION:
 	STP	X9,X10,[SP,#-16*(20-16)]
 
 	MRS	X9,SP_EL0
-	MRS	X10,SP_EL1
+	MOV	X10,SP
 	STP	X9,X10,[SP,#-16*(20-17)]
 
 	MRS	X9,FAR_EL1
@@ -195,7 +195,7 @@ swtch:
 
 	LDP	X9,X10,[X0,#16*17]
 	MSR	SP_EL0,X9
-	MSR	SP_EL1,X10
+	MOV	SP,X10
 
 	LDP	X9,X10,[X0,#16*16]
 	MSR	ESR_EL1,X10