ra8_error_handler.c

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#include "ra8_error_handler.h"
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_log.h"

RA8_INTERNAL static inline void internal_disable_irq(void)
{
#ifndef RA8_OFF_TARGET
  __asm__ volatile("cpsid i" ::: "memory");
#endif
}

RA8_INTERNAL static inline void internal_bkpt(void)
{
#ifndef RA8_OFF_TARGET
  __asm__ volatile("bkpt #0");
#endif
}
 
#ifndef RA8_OFF_TARGET
RA8_INTERNAL static inline void internal_wfi(void)
{
  __asm__ volatile("wfi");
}
#endif

[[gnu::weak]] void ra8_fatal_error(const char* tag, const char* message, uint32_t err)
{
  internal_disable_irq();
 
  /* Best-effort log. If the log backend itself is broken we still
   * halt -- logging must never prevent the halt. */
  ra8_log_error(tag, message);
  ra8_log_error_val(tag, "err=", err);
 
  internal_bkpt();
 
#ifdef RA8_OFF_TARGET
  /* On the host we cannot actually halt; abort makes the unit test
   * runner fail loudly instead of spinning. */
  __builtin_trap();
#else
  while (1) {
    internal_wfi();
  }
#endif
}