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aarch64: Do not save garbage on the stack 

No need to save useless values on the stack.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2021-03-12 11:59:00 +01:00 committed by Anas Nashif
parent 1bbee0a285
commit 23a0c8c2ec
1 changed files with 3 additions and 3 deletions
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6
arch/arm64/core/isr_wrapper.S
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@ -50,7 +50,7 @@ SECTION_FUNC(TEXT, _isr_wrapper)
cmp x0, #(GIC_INTID_SPURIOUS)
beq spurious_continue
stp x0, x1, [sp, #-16]!
stp x0, xzr, [sp, #-16]!
/* Retrieve the interrupt service routine */
ldr x1, =_sw_isr_table
@ -66,7 +66,7 @@ SECTION_FUNC(TEXT, _isr_wrapper)
msr daifset, #(DAIFSET_IRQ_BIT)
/* Signal end-of-interrupt */
ldp x0, x1, [sp], #16
ldp x0, xzr, [sp], #16
spurious_continue:
#if !defined(CONFIG_ARM_CUSTOM_INTERRUPT_CONTROLLER)
@ -92,7 +92,7 @@ spurious_continue:
* **old_thread parameter, so we need to make space on the stack for
* that.
*/
stp x1, xzr, [sp, #-16]!
sub sp, sp, #16
mov x0, sp
bl z_arch_get_next_switch_handle
ldp x1, xzr, [sp], #16