Index: lib/libc/arch/arm/gen/swapcontext.S
===================================================================
RCS file: /home/netbsd/src/lib/libc/arch/arm/gen/swapcontext.S,v
retrieving revision 1.15
diff -p -u -r1.15 swapcontext.S
--- lib/libc/arch/arm/gen/swapcontext.S	21 Nov 2018 21:01:41 -0000	1.15
+++ lib/libc/arch/arm/gen/swapcontext.S	28 Jun 2021 00:37:19 -0000
@@ -85,7 +85,9 @@ ENTRY(swapcontext)
 	b	PLT_SYM(_C_LABEL(setcontext))
 #else
 	push	{lr}
+	sub	sp, #4
 	bl	PLT_SYM(_C_LABEL(setcontext))
+	add	sp, #4
 	pop	{pc}
 #endif
 #if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__)
Index: lib/libc/arch/arm/sys/__clone.S
===================================================================
RCS file: /home/netbsd/src/lib/libc/arch/arm/sys/__clone.S,v
retrieving revision 1.9
diff -p -u -r1.9 __clone.S
--- lib/libc/arch/arm/sys/__clone.S	30 Nov 2013 20:20:42 -0000	1.9
+++ lib/libc/arch/arm/sys/__clone.S	28 Jun 2021 00:37:30 -0000
@@ -122,7 +122,9 @@ ENTRY(__clone)
 #else
 .Lcerror:
 	push	{lr}
+	sub	sp, #4
 	bl	CERROR
+	add	sp, #4
 	pop	{pc}
 #endif
 END(__clone)