| /* |
| * Copyright (c) 2013-2014 Wind River Systems, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief Cortex-M public error handling |
| * |
| * ARM-specific kernel error handling interface. Included by arm/arch.h. |
| */ |
| |
| #ifndef _ARCH_ARM_CORTEXM_ERROR_H_ |
| #define _ARCH_ARM_CORTEXM_ERROR_H_ |
| |
| #include <arch/arm/cortex_m/exc.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef _ASMLANGUAGE |
| extern void _NanoFatalErrorHandler(unsigned int reason, const NANO_ESF *esf); |
| extern void _SysFatalErrorHandler(unsigned int reason, const NANO_ESF *esf); |
| #endif |
| |
| #define _NANO_ERR_HW_EXCEPTION (0) /* MPU/Bus/Usage fault */ |
| #define _NANO_ERR_STACK_CHK_FAIL (2) /* Stack corruption detected */ |
| #define _NANO_ERR_ALLOCATION_FAIL (3) /* Kernel Allocation Failure */ |
| #define _NANO_ERR_KERNEL_OOPS (4) /* Kernel oops (fatal to thread) */ |
| #define _NANO_ERR_KERNEL_PANIC (5) /* Kernel panic (fatal to system) */ |
| |
| #define _SVC_CALL_IRQ_OFFLOAD 1 |
| #define _SVC_CALL_RUNTIME_EXCEPT 2 |
| |
| #if defined(CONFIG_ARMV6_M) |
| /* ARMv6 will hard-fault if SVC is called with interrupts locked. Just |
| * force them unlocked, the thread is in an undefined state anyway |
| * |
| * On ARMv7m we won't get a hardfault, but if interrupts were locked the |
| * thread will continue executing after the exception and forbid PendSV to |
| * schedule a new thread until they are unlocked which is not what we want. |
| * Force them unlocked as well. |
| */ |
| #define _ARCH_EXCEPT(reason_p) do { \ |
| __asm__ volatile ( \ |
| "cpsie i\n\t" \ |
| "mov r0, %[reason]\n\t" \ |
| "svc %[id]\n\t" \ |
| : \ |
| : [reason] "i" (reason_p), [id] "i" (_SVC_CALL_RUNTIME_EXCEPT) \ |
| : "memory"); \ |
| CODE_UNREACHABLE; \ |
| } while (0) |
| #elif defined(CONFIG_ARMV7_M) |
| #define _ARCH_EXCEPT(reason_p) do { \ |
| __asm__ volatile ( \ |
| "eors.n r0, r0\n\t" \ |
| "msr BASEPRI, r0\n\t" \ |
| "mov r0, %[reason]\n\t" \ |
| "svc %[id]\n\t" \ |
| : \ |
| : [reason] "i" (reason_p), [id] "i" (_SVC_CALL_RUNTIME_EXCEPT) \ |
| : "memory"); \ |
| CODE_UNREACHABLE; \ |
| } while (0) |
| #else |
| #error Unknown ARM architecture |
| #endif /* CONFIG_ARMV6_M */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ARCH_ARM_CORTEXM_ERROR_H_ */ |