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cdb94d6425
Unlike assertions, these APIs are active at all times. The kernel will treat these errors in the same way as fatal CPU exceptions. Ultimately, the policy of what to do with these errors is implemented in _SysFatalErrorHandler. If the archtecture supports it, a real CPU exception can be triggered which will provide a complete register dump and PC value when the problem occurs. This will provide more helpful information than a fake exception stack frame (_default_esf) passed to the arch-specific exception handling code. Issue: ZEP-843 Change-Id: I8f136905c05bb84772e1c5ed53b8e920d24eb6fd Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
84 lines
2.3 KiB
C
84 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_INVALID_TASK_EXIT (1) /* Invalid task exit */
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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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