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x86: get oops reason code more robustly

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The code did not consider privilege level stack switches.
We have the original stack pointer in the NANO_ESF,
just use that.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-02-14 13:41:31 -08:00 • committed by Anas Nashif
commit 21337019b0
1 changed files with 3 additions and 10 deletions
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13
arch/x86/core/fatal.c
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@ -229,17 +229,10 @@ FUNC_NORETURN void _arch_syscall_oops(void *ssf_ptr)
}
#ifdef CONFIG_X86_KERNEL_OOPS
/* The reason code gets pushed onto the stack right before the exception is
* triggered, so it would be after the nano_esf data
*/
struct oops_esf {
NANO_ESF nano_esf;
unsigned int reason;
};
FUNC_NORETURN void _do_kernel_oops(const struct oops_esf *esf)
FUNC_NORETURN void _do_kernel_oops(const NANO_ESF *esf)
{
_NanoFatalErrorHandler(esf->reason, &esf->nano_esf);
u32_t *stack_ptr = (u32_t *)esf->esp;
_NanoFatalErrorHandler(*stack_ptr, esf);
}
extern void (*_kernel_oops_handler)(void);