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arm: fatal: log which IRQn is triggering on spurious IRQs

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LOG which IRQn line is triggering on spurious IRQs as this makes it
much easier to debug spurious IRQs.

The new logs with this patch looks like:

<err> os: Unhandled IRQn: 227
<err> os: >>> ZEPHYR FATAL ERROR 1: Unhandled interrupt on CPU 0
<err> os: Current thread: 0x20032c20 (unknown)
<err> os: Halting system

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
This commit is contained in:
Sebastian Bøe 2024-04-23 16:21:10 +02:00 committed by Fabio Baltieri
parent a58a7d0aa1
commit 850cd54e67
1 changed files with 10 additions and 0 deletions
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10
arch/arm/core/fatal.c
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@ -73,6 +73,16 @@ void z_arm_fatal_error(unsigned int reason, const z_arch_esf_t *esf)
esf_dump(esf);
}
#endif /* CONFIG_EXCEPTION_DEBUG */
/* LOG the IRQn that was unhandled */
#if defined(CONFIG_CPU_CORTEX_M)
if (reason == K_ERR_SPURIOUS_IRQ) {
uint32_t irqn = __get_IPSR() - 16;
LOG_ERR("Unhandled IRQn: %d", irqn);
}
#endif
z_fatal_error(reason, esf);
}