mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-02 08:52:28 +00:00
0e6ede8929
This commit renames the Kconfig `FLOAT` symbol to `FPU`, since this symbol only indicates that the hardware Floating Point Unit (FPU) is used and does not imply and/or indicate the general availability of toolchain-level floating point support (i.e. this symbol is not selected when building for an FPU-less platform that supports floating point operations through the toolchain-provided software floating point library). Moreover, given that the symbol that indicates the availability of FPU is named `CPU_HAS_FPU`, it only makes sense to use "FPU" in the name of the symbol that enables the FPU. Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
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* Copyright (c) 2018 Foundries.io Ltd
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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 RISCV public exception handling
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*
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* RISCV-specific kernel exception handling interface.
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*/
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#ifndef ZEPHYR_INCLUDE_ARCH_RISCV_EXP_H_
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#define ZEPHYR_INCLUDE_ARCH_RISCV_EXP_H_
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#ifndef _ASMLANGUAGE
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#include <zephyr/types.h>
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#include <toolchain.h>
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#ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE
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#include <soc_context.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* The name of the structure which contains soc-specific state, if
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* any, as well as the soc_esf_t typedef below, are part of the RISC-V
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* arch API.
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*
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* The contents of the struct are provided by a SOC-specific
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* definition in soc_context.h.
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*/
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#ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE
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struct soc_esf {
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SOC_ESF_MEMBERS;
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};
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#endif
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#if !defined(RV_FP_TYPE) && defined(CONFIG_FPU) && defined(CONFIG_FP_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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struct __esf {
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ulong_t ra; /* return address */
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ulong_t gp; /* global pointer */
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ulong_t tp; /* thread pointer */
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ulong_t t0; /* Caller-saved temporary register */
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ulong_t t1; /* Caller-saved temporary register */
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ulong_t t2; /* Caller-saved temporary register */
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ulong_t t3; /* Caller-saved temporary register */
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ulong_t t4; /* Caller-saved temporary register */
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ulong_t t5; /* Caller-saved temporary register */
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ulong_t t6; /* Caller-saved temporary register */
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ulong_t a0; /* function argument/return value */
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ulong_t a1; /* function argument */
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ulong_t a2; /* function argument */
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ulong_t a3; /* function argument */
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ulong_t a4; /* function argument */
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ulong_t a5; /* function argument */
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ulong_t a6; /* function argument */
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ulong_t a7; /* function argument */
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ulong_t mepc; /* machine exception program counter */
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ulong_t mstatus; /* machine status register */
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#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
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ulong_t fp_state; /* Floating-point saved context state. */
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RV_FP_TYPE ft0; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft1; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft2; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft3; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft4; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft5; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft6; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft7; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft8; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft9; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft10; /* Caller-saved temporary floating register */
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RV_FP_TYPE ft11; /* Caller-saved temporary floating register */
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RV_FP_TYPE fa0; /* function argument/return value */
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RV_FP_TYPE fa1; /* function argument/return value */
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RV_FP_TYPE fa2; /* function argument */
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RV_FP_TYPE fa3; /* function argument */
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RV_FP_TYPE fa4; /* function argument */
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RV_FP_TYPE fa5; /* function argument */
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RV_FP_TYPE fa6; /* function argument */
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RV_FP_TYPE fa7; /* function argument */
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#endif
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#ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE
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struct soc_esf soc_context;
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#endif
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};
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typedef struct __esf z_arch_esf_t;
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#ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE
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typedef struct soc_esf soc_esf_t;
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ASMLANGUAGE */
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#endif /* ZEPHYR_INCLUDE_ARCH_RISCV_EXP_H_ */
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