arch_inlines.h

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/*
 * Copyright (c) 2016 Cadence Design Systems, Inc.
 * Copyright (c) 2019 Stephanos Ioannidis <root@stephanos.io>
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ARCH_XTENSA_ARCH_INLINES_H_
#define ZEPHYR_INCLUDE_ARCH_XTENSA_ARCH_INLINES_H_
 
#ifndef _ASMLANGUAGE
 
#include <zephyr/kernel_structs.h>
#include <zsr.h>
 
#define XTENSA_RSR(sr) \
        ({uint32_t v; \
         __asm__ volatile ("rsr." sr " %0" : "=a"(v)); \
         v; })
 
#define XTENSA_WSR(sr, v) \
        do { \
                __asm__ volatile ("wsr." sr " %0" : : "r"(v)); \
        } while (false)
 
#define XTENSA_RUR(ur) \
        ({uint32_t v; \
         __asm__ volatile ("rur." ur " %0" : "=a"(v)); \
         v; })
 
#define XTENSA_WUR(ur, v) \
        do { \
                __asm__ volatile ("wur." ur " %0" : : "r"(v)); \
        } while (false)
 
static ALWAYS_INLINE _cpu_t *arch_curr_cpu(void)
{
        _cpu_t *cpu;
 
        cpu = (_cpu_t *)XTENSA_RSR(ZSR_CPU_STR);
 
        return cpu;
}
 
static ALWAYS_INLINE uint32_t arch_proc_id(void)
{
        uint32_t prid;
 
        __asm__ volatile("rsr %0, PRID" : "=r"(prid));
        return prid;
}
 
#ifdef CONFIG_SOC_HAS_RUNTIME_NUM_CPUS
extern unsigned int soc_num_cpus;
#endif
 
static ALWAYS_INLINE unsigned int arch_num_cpus(void)
{
#ifdef CONFIG_SOC_HAS_RUNTIME_NUM_CPUS
        return soc_num_cpus;
#else
        return CONFIG_MP_MAX_NUM_CPUS;
#endif
}
 
#endif /* !_ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_XTENSA_ARCH_INLINES_H_ */