arch: arm: Stack Overflow Usage Fault log for ARMv8-M Mainline

ioannisg · galak · commit b75b01050ddd · 2018-03-10T16:10:07.000-06:00
This commit contributes the Stack Overflow UsageFault dumping
for ARMv8-M implementations that support the Main Extension.

Signed-off-by: Ioannis Glaropoulos &lt;Ioannis.Glaropoulos@nordicsemi.no&gt;
diff --git a/arch/arm/core/fault.c b/arch/arm/core/fault.c
@@ -252,6 +252,11 @@ static void _UsageFault(const NANO_ESF *esf)
 	if (SCB->CFSR & SCB_CFSR_UNALIGNED_Msk) {
 		PR_EXC("  Unaligned memory access\n");
 	}
+#if defined(CONFIG_ARMV8_M_MAINLINE)
+	if (SCB->CFSR & SCB_CFSR_STKOF_Msk) {
+		PR_EXC("  Stack overflow\n");
+	}
+#endif /* CONFIG_ARMV8_M_MAINLINE */
 	if (SCB->CFSR & SCB_CFSR_NOCP_Msk) {
 		PR_EXC("  No coprocessor instructions\n");
 	}

Original file line number	Diff line number	Diff line change
`@@ -252,6 +252,11 @@ static void _UsageFault(const NANO_ESF *esf)`
`252`	`252`	`if (SCB->CFSR & SCB_CFSR_UNALIGNED_Msk) {`
`253`	`253`	`PR_EXC(" Unaligned memory access\n");`
`254`	`254`	`}`
	`255`	`+#if defined(CONFIG_ARMV8_M_MAINLINE)`
	`256`	`+ if (SCB->CFSR & SCB_CFSR_STKOF_Msk) {`
	`257`	`+ PR_EXC(" Stack overflow\n");`
	`258`	`+ }`
	`259`	`+#endif /* CONFIG_ARMV8_M_MAINLINE */`
`255`	`260`	`if (SCB->CFSR & SCB_CFSR_NOCP_Msk) {`
`256`	`261`	`PR_EXC(" No coprocessor instructions\n");`
`257`	`262`	`}`