py: Add mp_raise_OSError(errno) helper function.

This is an often used code pattern, and its use reduces code size of the
core by about 100 bytes.

1 files changed, 4 insertions, 0 deletions

diff --git a/py/runtime.c b/py/runtime.c
index c3e187d8a..003c9f8b4 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -1405,6 +1405,10 @@ NORETURN void mp_raise_TypeError(const char *msg) {
     mp_raise_msg(&mp_type_TypeError, msg);
 }
 
+NORETURN void mp_raise_OSError(int errno_) {
+    nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(errno_)));
+}
+
 NORETURN void mp_not_implemented(const char *msg) {
     mp_raise_msg(&mp_type_NotImplementedError, msg);
 }