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arch: arc: use top of isr stack as exception stack and bug fixes

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* re-use top of isr stack as exception stack
* bug fixes in irq offload's implementation
* improve kernel oops implementation

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
This commit is contained in:
Wayne Ren 2018-06-09 22:08:04 +08:00 • committed by Maureen Helm
commit 97d0436486
3 changed files with 117 additions and 53 deletions
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7
arch/arc/core/fault.c
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@ -39,6 +39,13 @@ void _Fault(const NANO_ESF *esf)
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);