[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a diff in pull request #7436: arm: Added breakpoint in stack overflow trap.

[GitBox]

xiaoxiang781216 commented on code in PR #7436:
URL: https://github.com/apache/incubator-nuttx/pull/7436#discussion_r1005757597


##########
arch/arm/src/armv8-m/arm_stackcheck.c:
##########
@@ -69,6 +69,12 @@ void __stack_overflow_trap(void)
 
   uint32_t regval;
 
+  regval = getreg32(NVIC_DHCSR);
+  if (regval & 0x01)

Review Comment:
   why need check NVIC_DHCSR



##########
arch/arm/src/armv7-m/arm_stackcheck.c:
##########
@@ -69,6 +69,12 @@ void __stack_overflow_trap(void)
 
   uint32_t regval;
 
+  regval = getreg32(NVIC_DHCSR);
+  if (regval & 0x01)

Review Comment:
   why check NVIC_DHCSR



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