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/*
* Copyright (c) 2017 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Per-arch thread definition
*
* This file contains definitions for
*
* struct _thread_arch
* struct _callee_saved
*
* necessary to instantiate instances of struct k_thread.
*/
#ifndef ZEPHYR_INCLUDE_ARCH_RISCV_THREAD_H_
#define ZEPHYR_INCLUDE_ARCH_RISCV_THREAD_H_
#ifndef _ASMLANGUAGE
#include <zephyr/types.h>
#if !defined(RV_FP_TYPE) && defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING)
#ifdef CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION
#define RV_FP_TYPE uint64_t
#else
#define RV_FP_TYPE uint32_t
#endif
#endif
/*
* The following structure defines the list of registers that need to be
* saved/restored when a cooperative context switch occurs.
*/
struct _callee_saved {
ulong_t sp; /* Stack pointer, (x2 register) */
ulong_t s0; /* saved register/frame pointer */
ulong_t s1; /* saved register */
ulong_t s2; /* saved register */
ulong_t s3; /* saved register */
ulong_t s4; /* saved register */
ulong_t s5; /* saved register */
ulong_t s6; /* saved register */
ulong_t s7; /* saved register */
ulong_t s8; /* saved register */
ulong_t s9; /* saved register */
ulong_t s10; /* saved register */
ulong_t s11; /* saved register */
#if defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING)
uint32_t fcsr; /* Control and status register */
RV_FP_TYPE fs0; /* saved floating-point register */
RV_FP_TYPE fs1; /* saved floating-point register */
RV_FP_TYPE fs2; /* saved floating-point register */
RV_FP_TYPE fs3; /* saved floating-point register */
RV_FP_TYPE fs4; /* saved floating-point register */
RV_FP_TYPE fs5; /* saved floating-point register */
RV_FP_TYPE fs6; /* saved floating-point register */
RV_FP_TYPE fs7; /* saved floating-point register */
RV_FP_TYPE fs8; /* saved floating-point register */
RV_FP_TYPE fs9; /* saved floating-point register */
RV_FP_TYPE fs10; /* saved floating-point register */
RV_FP_TYPE fs11; /* saved floating-point register */
#endif
};
typedef struct _callee_saved _callee_saved_t;
struct _thread_arch {
uint32_t swap_return_value; /* Return value of z_swap() */
};
typedef struct _thread_arch _thread_arch_t;
#endif /* _ASMLANGUAGE */
#endif /* ZEPHYR_INCLUDE_ARCH_RISCV_THREAD_H_ */