arch/arm64/core/macro_priv.inc

/*
 * Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef _MACRO_PRIV_INC_
#define _MACRO_PRIV_INC_

#include <arch/arm64/tpidrro_el0.h>

#ifdef _ASMLANGUAGE

/*
 * Get CPU id
 */

.macro get_cpu_id xreg0
	mrs	\xreg0, mpidr_el1
	/* FIMXME: aff3 not taken into consideration */
	ubfx	\xreg0, \xreg0, #0, #24
.endm

/*
 * Get CPU pointer
 */

.macro get_cpu xreg0
	mrs	\xreg0, tpidrro_el0
	and	\xreg0, \xreg0, #TPIDRROEL0_CURR_CPU
.endm

/*
 * Increment nested counter
 */

.macro inc_nest_counter xreg0, xreg1
	get_cpu	\xreg0
	ldr	\xreg1, [\xreg0, #___cpu_t_nested_OFFSET]
	add	\xreg1, \xreg1, #1
	str	\xreg1, [\xreg0, #___cpu_t_nested_OFFSET]
.endm

/*
 * Decrement nested counter and update condition flags
 */

.macro dec_nest_counter xreg0, xreg1
	get_cpu	\xreg0
	ldr	\xreg1, [\xreg0, #___cpu_t_nested_OFFSET]
	subs	\xreg1, \xreg1, #1
	str	\xreg1, [\xreg0, #___cpu_t_nested_OFFSET]
.endm

#endif /* _ASMLANGUAGE */

#endif /* _MACRO_PRIV_INC_ */