thread.h

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

 
#ifndef ZEPHYR_INCLUDE_ARCH_ARM64_THREAD_H_
#define ZEPHYR_INCLUDE_ARCH_ARM64_THREAD_H_
 
#ifndef _ASMLANGUAGE
#include <zephyr/types.h>
#include <zephyr/arch/arm64/mm.h>
 
struct _callee_saved {
        uint64_t x19;
        uint64_t x20;
        uint64_t x21;
        uint64_t x22;
        uint64_t x23;
        uint64_t x24;
        uint64_t x25;
        uint64_t x26;
        uint64_t x27;
        uint64_t x28;
        uint64_t x29;
        uint64_t sp_el0;
        uint64_t sp_elx;
        uint64_t lr;
};
 
typedef struct _callee_saved _callee_saved_t;
 
struct z_arm64_fp_context {
        uint32_t fpsr, fpcr;
        union {
                struct {
                        __int128 v_regs[32];
                } neon;
#ifdef CONFIG_ARM64_SVE
                struct {
                        uint8_t z_regs[32 * CONFIG_ARM64_SVE_VL_MAX] __aligned(8);
                        uint8_t p_regs[16 * (CONFIG_ARM64_SVE_VL_MAX / 8)];
                        uint8_t ffr[CONFIG_ARM64_SVE_VL_MAX / 8];
                        enum { SIMD_NONE = 0, SIMD_NEON, SIMD_SVE } simd_mode;
                } sve;
#endif
        };
};
 
typedef struct z_arm64_fp_context z_arm64_fp_context;
 
struct _thread_arch {
#if defined(CONFIG_USERSPACE) || defined(CONFIG_ARM64_STACK_PROTECTION)
#if defined(CONFIG_ARM_MMU)
        struct arm_mmu_ptables *ptables;
#endif
#if defined(CONFIG_ARM_MPU)
        struct dynamic_region_info regions[ARM64_MPU_MAX_DYNAMIC_REGIONS];
        uint8_t region_num;
        atomic_t flushing;
#endif
#endif
#ifdef CONFIG_ARM64_SAFE_EXCEPTION_STACK
        uint64_t stack_limit;
#endif
        uint8_t exception_depth;
        /* Keep large structures at the end to avoid offset issues */
#ifdef CONFIG_FPU_SHARING
        struct z_arm64_fp_context saved_fp_context;
#endif
};
 
typedef struct _thread_arch _thread_arch_t;
 
#endif /* _ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_ARM64_THREAD_H_ */