83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*
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* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
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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 RISCV32 public exception handling
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*
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* RISCV32-specific kernel exception handling interface.
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*/
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#ifndef _ARCH_RISCV32_EXP_H_
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#define _ARCH_RISCV32_EXP_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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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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struct __esf {
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u32_t ra; /* return address */
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u32_t gp; /* global pointer */
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u32_t tp; /* thread pointer */
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u32_t t0; /* Caller-saved temporary register */
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u32_t t1; /* Caller-saved temporary register */
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u32_t t2; /* Caller-saved temporary register */
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u32_t t3; /* Caller-saved temporary register */
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u32_t t4; /* Caller-saved temporary register */
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u32_t t5; /* Caller-saved temporary register */
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u32_t t6; /* Caller-saved temporary register */
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u32_t a0; /* function argument/return value */
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u32_t a1; /* function argument */
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u32_t a2; /* function argument */
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u32_t a3; /* function argument */
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u32_t a4; /* function argument */
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u32_t a5; /* function argument */
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u32_t a6; /* function argument */
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u32_t a7; /* function argument */
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u32_t mepc; /* machine exception program counter */
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u32_t mstatus; /* machine status register */
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#if defined(CONFIG_SOC_RISCV32_PULPINO)
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/* pulpino hardware loop registers */
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u32_t lpstart0;
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u32_t lpend0;
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u32_t lpcount0;
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u32_t lpstart1;
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u32_t lpend1;
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u32_t lpcount1;
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#endif
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};
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typedef struct __esf NANO_ESF;
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extern const NANO_ESF _default_esf;
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extern FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason,
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const NANO_ESF *esf);
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extern void _SysFatalErrorHandler(unsigned int reason,
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const NANO_ESF *esf);
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#endif /* _ASMLANGUAGE */
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#define _NANO_ERR_CPU_EXCEPTION (0) /* Any unhandled exception */
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#define _NANO_ERR_STACK_CHK_FAIL (2) /* Stack corruption detected */
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#define _NANO_ERR_ALLOCATION_FAIL (3) /* Kernel Allocation Failure */
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#define _NANO_ERR_SPURIOUS_INT (4) /* Spurious interrupt */
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#define _NANO_ERR_KERNEL_OOPS (5) /* Kernel oops (fatal to thread) */
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#define _NANO_ERR_KERNEL_PANIC (6) /* Kernel panic (fatal to system) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ARCH_RISCV32_EXP_H_ */
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