arch: arm64: Remove unused macro parameters

Remove z_arm64_{enter,exit}_exc parameter leftovers.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>

arch/arm/core/aarch64/isr_wrapper.S

@@ -33,7 +33,7 @@ GDATA(_sw_isr_table)
 
 GTEXT(_isr_wrapper)
 SECTION_FUNC(TEXT, _isr_wrapper)
-	z_arm64_enter_exc x0, x1, x2
+	z_arm64_enter_exc x0, x1
 
 	/* ++(_kernel->nested) to be checked by arch_is_in_isr() */
 	inc_nest_counter x0, x1
@@ -109,5 +109,5 @@ exit:
 #ifdef CONFIG_STACK_SENTINEL
 	bl	z_check_stack_sentinel
 #endif
-	z_arm64_exit_exc x0, x1, x2
+	z_arm64_exit_exc x0, x1
 

arch/arm/core/aarch64/macro_priv.inc

@@ -19,7 +19,7 @@
  * @return N/A
  */
 
-.macro z_arm64_enter_exc xreg0, xreg1, xreg2
+.macro z_arm64_enter_exc xreg0, xreg1
 	/*
 	 * Two things can happen:
 	 *
@@ -43,9 +43,9 @@
 	 * Store SPSR_ELn and ELR_ELn. This is needed to support nested
 	 * exception handlers
 	 */
-	mrs	\xreg1, spsr_el1
-	mrs	\xreg2, elr_el1
-	stp	\xreg1, \xreg2, [sp, #-16]!
+	mrs	\xreg0, spsr_el1
+	mrs	\xreg1, elr_el1
+	stp	\xreg0, \xreg1, [sp, #-16]!
 .endm
 
 /**
@@ -60,7 +60,7 @@
  * @return N/A
  */
 
-.macro z_arm64_exit_exc xreg0, xreg1, xreg2
+.macro z_arm64_exit_exc xreg0, xreg1
 	/*
 	 * Restore SPSR_ELn and ELR_ELn. This is needed to support nested
 	 * exception handlers

arch/arm/core/aarch64/switch.S

@@ -97,7 +97,7 @@ SECTION_FUNC(TEXT, z_arm64_context_switch)
 
 GTEXT(z_arm64_svc)
 SECTION_FUNC(TEXT, z_arm64_svc)
-	z_arm64_enter_exc x2, x3, x4
+	z_arm64_enter_exc x2, x3
 
 	mrs	x0, esr_el1
 	lsr	x1, x0, #26
@@ -141,7 +141,7 @@ context_switch:
 	bl	z_arm64_context_switch
 
 exit:
-	z_arm64_exit_exc x0, x1, x2
+	z_arm64_exit_exc x0, x1
 
 inv:
 	mov	x0, #0 /* K_ERR_CPU_EXCEPTION */

arch/arm/core/aarch64/vector_table.S

@@ -95,7 +95,7 @@ SECTION_SUBSEC_FUNC(exc_vector_table,_vector_table_section,_vector_table)
 
 	/* Current EL with SPx / SError */
 	.align 7
-	z_arm64_enter_exc x0, x1, x2
+	z_arm64_enter_exc x0, x1
 
 	mov	x1, sp
 	mov	x0, #0 /* K_ERR_CPU_EXCEPTION */