Add a basic C based wasmtime runtime

This can be used for creating an equivalent rust based runtime with C
bindings.

Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/c/wasmtime-basic/test.c b/c/wasmtime-basic/test.c
new file mode 100644
index 0000000..f6e8723
--- /dev/null
+++ b/c/wasmtime-basic/test.c
@@ -0,0 +1,26 @@
+/*
+ * test.c
+ */
+
+#include <stdint.h>
+
+typedef uint32_t u32;
+typedef uint8_t   u8;
+
+__attribute__((import_module("env"), import_name("imported_func")))
+void imported_func(void);
+
+__attribute__((export_name("exported_func")))
+int exported_func(u8 *addr, u32 mem_size)
+{
+	(void)addr;
+	(void)mem_size;
+	imported_func();
+
+	return 0;
+}
+
+int main(void)
+{
+	return 0;
+}