Support user threading in hard fault handler

crawford · crawford · commit a82e1dedb490 · 2018-06-09T21:27:38.000-07:00
diff --git a/asm.s b/asm.s
@@ -1,5 +1,10 @@
   .global HardFault
   .thumb_func
 HardFault:
-  mrs r0, MSP
+  tst lr, #4
+
+  ite EQ
+  mrseq r0, MSP
+  mrsne r0, PSP
+
   bl UserHardFault
