0: Bit0: reschedule. Bit1: switch context. If non zero, and depending on <code>currentThread->shallTerminate</code>, send thread exit debug events after handling valid/authorized SVCs (except 0xFF). Cleared to zero after handling.
+
0: Bit0: reschedule. Bit1: switch context. If non zero, and depending on <code>currentThread->shallTerminate</code>, send thread exit debug events after handling valid/authorized SVCs (except 0xFF). Cleared to zero after handling. Bit2: lock debug features
−
1: "Allow debug" flag from the process's exheader. If set, <code>{r0-r7, r12, lr}</code> will be pushed (they'll always be when handling invalid/unauthorized SVCs/SVC 0xFF).
+
1: "Allow debug" flag from the process's exheader. If set, <code>{r0-r7, r12, lr}</code> will be pushed (they'll always be when handling invalid/unauthorized SVCs/SVC 0xFF). Needed for svcGetThreadContext and svcSetThreadContext to work properly in contexts other than exception handling.