aaf93205bb
This commit renames the Kconfig `FP_SHARING` symbol to `FPU_SHARING`, since this symbol specifically refers to the hardware FPU sharing support by means of FPU context preservation, and the "FP" prefix is not fully descriptive of that; leaving room for ambiguity. Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Per-arch thread definition
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*
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* This file contains definitions for
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*
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* struct _thread_arch
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* struct _callee_saved
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*
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* necessary to instantiate instances of struct k_thread.
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*/
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#ifndef ZEPHYR_INCLUDE_ARCH_RISCV_THREAD_H_
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#define ZEPHYR_INCLUDE_ARCH_RISCV_THREAD_H_
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#ifndef _ASMLANGUAGE
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#include <zephyr/types.h>
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#if !defined(RV_FP_TYPE) && defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING)
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#ifdef CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION
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#define RV_FP_TYPE u64_t
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#else
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#define RV_FP_TYPE u32_t
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#endif
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#endif
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/*
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* The following structure defines the list of registers that need to be
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* saved/restored when a cooperative context switch occurs.
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*/
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struct _callee_saved {
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ulong_t sp; /* Stack pointer, (x2 register) */
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ulong_t s0; /* saved register/frame pointer */
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ulong_t s1; /* saved register */
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ulong_t s2; /* saved register */
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ulong_t s3; /* saved register */
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ulong_t s4; /* saved register */
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ulong_t s5; /* saved register */
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ulong_t s6; /* saved register */
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ulong_t s7; /* saved register */
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ulong_t s8; /* saved register */
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ulong_t s9; /* saved register */
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ulong_t s10; /* saved register */
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ulong_t s11; /* saved register */
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#if defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING)
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u32_t fcsr; /* Control and status register */
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RV_FP_TYPE fs0; /* saved floating-point register */
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RV_FP_TYPE fs1; /* saved floating-point register */
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RV_FP_TYPE fs2; /* saved floating-point register */
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RV_FP_TYPE fs3; /* saved floating-point register */
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RV_FP_TYPE fs4; /* saved floating-point register */
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RV_FP_TYPE fs5; /* saved floating-point register */
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RV_FP_TYPE fs6; /* saved floating-point register */
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RV_FP_TYPE fs7; /* saved floating-point register */
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RV_FP_TYPE fs8; /* saved floating-point register */
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RV_FP_TYPE fs9; /* saved floating-point register */
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RV_FP_TYPE fs10; /* saved floating-point register */
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RV_FP_TYPE fs11; /* saved floating-point register */
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#endif
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};
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typedef struct _callee_saved _callee_saved_t;
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struct _thread_arch {
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u32_t swap_return_value; /* Return value of z_swap() */
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};
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typedef struct _thread_arch _thread_arch_t;
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#endif /* _ASMLANGUAGE */
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#endif /* ZEPHYR_INCLUDE_ARCH_RISCV_THREAD_H_ */
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