85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
|
|
* Copyright (c) 2014 Wind River Systems, Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Common fault handler for ARCv2
|
|
*
|
|
* Common fault handler for ARCv2 processors.
|
|
*/
|
|
|
|
#include <toolchain.h>
|
|
#include <linker/sections.h>
|
|
#include <inttypes.h>
|
|
|
|
#include <kernel.h>
|
|
#include <kernel_structs.h>
|
|
#include <misc/printk.h>
|
|
#include <exc_handle.h>
|
|
#include <logging/log_ctrl.h>
|
|
|
|
#ifdef CONFIG_USERSPACE
|
|
Z_EXC_DECLARE(z_arch_user_string_nlen);
|
|
|
|
static const struct z_exc_handle exceptions[] = {
|
|
Z_EXC_HANDLE(z_arch_user_string_nlen)
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* @brief Fault handler
|
|
*
|
|
* This routine is called when fatal error conditions are detected by hardware
|
|
* and is responsible only for reporting the error. Once reported, it then
|
|
* invokes the user provided routine _SysFatalErrorHandler() which is
|
|
* responsible for implementing the error handling policy.
|
|
*/
|
|
void _Fault(NANO_ESF *esf)
|
|
{
|
|
u32_t vector, code, parameter;
|
|
u32_t exc_addr = _arc_v2_aux_reg_read(_ARC_V2_EFA);
|
|
u32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR);
|
|
|
|
LOG_PANIC();
|
|
|
|
#ifdef CONFIG_USERSPACE
|
|
for (int i = 0; i < ARRAY_SIZE(exceptions); i++) {
|
|
u32_t start = (u32_t)exceptions[i].start;
|
|
u32_t end = (u32_t)exceptions[i].end;
|
|
|
|
if (esf->pc >= start && esf->pc < end) {
|
|
esf->pc = (u32_t)(exceptions[i].fixup);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
vector = _ARC_V2_ECR_VECTOR(ecr);
|
|
code = _ARC_V2_ECR_CODE(ecr);
|
|
parameter = _ARC_V2_ECR_PARAMETER(ecr);
|
|
|
|
|
|
/* exception raised by kernel */
|
|
if (vector == 0x9 && parameter == _TRAP_S_CALL_RUNTIME_EXCEPT) {
|
|
_NanoFatalErrorHandler(esf->r0, esf);
|
|
return;
|
|
}
|
|
|
|
printk("Exception vector: 0x%x, cause code: 0x%x, parameter 0x%x\n",
|
|
vector, code, parameter);
|
|
printk("Address 0x%x\n", exc_addr);
|
|
#ifdef CONFIG_ARC_STACK_CHECKING
|
|
/* Vector 6 = EV_ProV. Regardless of code, parameter 2 means stack
|
|
* check violation
|
|
*/
|
|
if (vector == 6 && parameter == 2) {
|
|
_NanoFatalErrorHandler(_NANO_ERR_STACK_CHK_FAIL, esf);
|
|
return;
|
|
}
|
|
#endif
|
|
_NanoFatalErrorHandler(_NANO_ERR_HW_EXCEPTION, esf);
|
|
}
|