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kernel: consolidate error handling code

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* z_NanoFatalErrorHandler() is now moved to common kernel code
  and renamed z_fatal_error(). Arches dump arch-specific info
  before calling.
* z_SysFatalErrorHandler() is now moved to common kernel code
  and renamed k_sys_fatal_error_handler(). It is now much simpler;
  the default policy is simply to lock interrupts and halt the system.
  If an implementation of this function returns, then the currently
  running thread is aborted.
* New arch-specific APIs introduced:
  - z_arch_system_halt() simply powers off or halts the system.
* We now have a standard set of fatal exception reason codes,
  namespaced under K_ERR_*
* CONFIG_SIMPLE_FATAL_ERROR_HANDLER deleted
* LOG_PANIC() calls moved to k_sys_fatal_error_handler()

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-07-11 14:18:28 -07:00 • committed by Andrew Boie
commit 71ce8ceb18
53 changed files with 397 additions and 1183 deletions
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11
include/kernel.h
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@ -4658,8 +4658,7 @@ extern void z_sys_power_save_idle_exit(s32_t ticks);
*/
#define z_except_reason(reason) do { \
printk("@ %s:%d:\n", __FILE__, __LINE__); \
z_NanoFatalErrorHandler(reason, &_default_esf); \
k_thread_abort(k_current_get()); \
z_fatal_error(reason, &_default_esf); \
} while (false)
#endif /* _ARCH__EXCEPT */
@ -4670,13 +4669,13 @@ extern void z_sys_power_save_idle_exit(s32_t ticks);
* This should be called when a thread has encountered an unrecoverable
* runtime condition and needs to terminate. What this ultimately
* means is determined by the _fatal_error_handler() implementation, which
* will be called will reason code _NANO_ERR_KERNEL_OOPS.
* will be called will reason code K_ERR_KERNEL_OOPS.
*
* If this is called from ISR context, the default system fatal error handler
* will treat it as an unrecoverable system error, just like k_panic().
* @req K-MISC-003
*/
#define k_oops() z_except_reason(_NANO_ERR_KERNEL_OOPS)
#define k_oops() z_except_reason(K_ERR_KERNEL_OOPS)
/**
* @brief Fatally terminate the system
@ -4684,10 +4683,10 @@ extern void z_sys_power_save_idle_exit(s32_t ticks);
* This should be called when the Zephyr kernel has encountered an
* unrecoverable runtime condition and needs to terminate. What this ultimately
* means is determined by the _fatal_error_handler() implementation, which
* will be called will reason code _NANO_ERR_KERNEL_PANIC.
* will be called will reason code K_ERR_KERNEL_PANIC.
* @req K-MISC-004
*/
#define k_panic() z_except_reason(_NANO_ERR_KERNEL_PANIC)
#define k_panic() z_except_reason(K_ERR_KERNEL_PANIC)
/*
* private APIs that are utilized by one or more public APIs