arch_inlines.h

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/*
 * Copyright (c) 2019 Intel Corporation
 * Copyright (c) 2019 Stephanos Ioannidis <root@stephanos.io>
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ARCH_X86_ARCH_INLINES_H_
#define ZEPHYR_INCLUDE_ARCH_X86_ARCH_INLINES_H_
 
#ifndef _ASMLANGUAGE
 
#if defined(CONFIG_X86_64)
 
#include <zephyr/arch/x86/intel64/thread.h>
#include <zephyr/kernel_structs.h>
 
static inline struct _cpu *arch_curr_cpu(void)
{
        struct _cpu *cpu;
 
        __asm__ volatile("movq %%gs:(%c1), %0"
                         : "=r" (cpu)
                         : "i" (offsetof(x86_tss64_t, cpu)));
 
        return cpu;
}
 
static ALWAYS_INLINE uint32_t arch_proc_id(void)
{
        /*
         * Placeholder implementation to be replaced with an architecture
         * specific call to get processor ID
         */
        return arch_curr_cpu()->id;
}
 
#endif /* CONFIG_X86_64 */
 
static ALWAYS_INLINE unsigned int arch_num_cpus(void)
{
        return CONFIG_MP_MAX_NUM_CPUS;
}
 
#endif /* !_ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_X86_ARCH_INLINES_H_ */