1 files changed, 50 insertions, 0 deletions
diff --git a/shared/runtime/gchelper.h b/shared/runtime/gchelper.h
new file mode 100644
index 0000000000..645ee837f5
--- /dev/null
+++ b/shared/runtime/gchelper.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_LIB_UTILS_GCHELPER_H
+#define MICROPY_INCLUDED_LIB_UTILS_GCHELPER_H
+
+#include <stdint.h>
+
+#if MICROPY_GCREGS_SETJMP
+#include <setjmp.h>
+typedef jmp_buf gc_helper_regs_t;
+#else
+
+#if defined(__x86_64__)
+typedef uintptr_t gc_helper_regs_t[6];
+#elif defined(__i386__)
+typedef uintptr_t gc_helper_regs_t[4];
+#elif defined(__thumb2__) || defined(__thumb__) || defined(__arm__)
+typedef uintptr_t gc_helper_regs_t[10];
+#elif defined(__aarch64__)
+typedef uintptr_t gc_helper_regs_t[11]; // x19-x29
+#endif
+
+#endif
+
+void gc_helper_collect_regs_and_stack(void);
+
+#endif // MICROPY_INCLUDED_LIB_UTILS_GCHELPER_H