modsys: Add basic sys.exc_info() implementation.
The implementation is very basic and non-compliant and provided solely for
CPython compatibility. The function itself is bad Python2 heritage, its
usage is discouraged.
diff --git a/py/vm.c b/py/vm.c
index 1af3636..3a71913 100644
--- a/py/vm.c
+++ b/py/vm.c
@@ -1228,6 +1228,10 @@
exception_handler:
// exception occurred
+ #if MICROPY_PY_SYS_EXC_INFO
+ MP_STATE_VM(cur_exception) = nlr.ret_val;
+ #endif
+
#if SELECTIVE_EXC_IP
// with selective ip, we store the ip 1 byte past the opcode, so move ptr back
code_state->ip -= 1;