1 files changed, 76 insertions, 0 deletions
diff --git a/tools/wasm_compile.h b/tools/wasm_compile.h
new file mode 100644
index 0000000..3412b2d
--- /dev/null
+++ b/tools/wasm_compile.h
@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#define STACK_FRAME_BACKUP_ADDR 0x0FFFFC
+#define STACK_TOP_ADDR          0x0FFFFC
+#define CODE_BOTTOM_ADDR        0x000000
+#define CODE_TOP_ADDR           0x000200
+#define MEMORY_BOTTOM_ADDR      0x000200
+
+/* Error messages */
+#define MSG_SIZE_OVERFLOW "Number overflows size_t\n"
+#define MSG_EOF           "Unexpected end of bytes\n"
+#define MSG_BAD_NUM_ENC   "Improper number encoding\n"
+#define MSG_BAD_NUM       "Couldn't parse number\n"
+#define MSG_BAD_SIZE      "Couldn't compute size to allocate\n"
+#define MSG_ALLOC_FAIL(n) "Failed to allocate %lu bytes\n", (unsigned long) (n)
+#define MSG_BAD(nam, val) "Found 0x%02hhx instead of %s\n", (char) (val), nam
+#define MSG_BYTES_REMAIN  "Didn't use up all bytes when parsing\n"
+#define MSG_SEEK_FAIL     "Couldn't navigate the file\n"
+#define MSG_BAD_IDX(nam)  "Got %s out of range\n", nam
+
+#define PRERR(...) fprintf(stderr, __VA_ARGS__)
+
+struct functype {
+	uint32_t arguments_count;
+	char *arguments;
+
+	char result;
+};
+
+struct function {
+	struct functype *type;
+
+	uint32_t locals_count;
+	char *locals;
+
+	struct instruction *translated_body;
+	uint32_t start_addr;
+};
+
+struct export {
+	char *name;
+	char desc;
+	uint32_t idx;
+};
+
+struct module {
+	uint32_t functypes_count;
+	struct functype *functypes;
+	uint32_t functions_count;
+	struct function *functions;
+	enum {
+		MEM_NONE = 0,
+		MEM_MIN,
+		MEM_MIN_MAX
+	} memory_type;
+	uint32_t mem_min, mem_max;
+	uint32_t exports_count;
+	struct export *exports;
+};
+
+int leb_u32(FILE *handle, uint32_t *result);
+
+void free_expr(struct instruction *expr);
+
+void free_module(struct module *module);
+
+struct module *parse_module(FILE *handle);
+
+int translate(FILE *handle, struct function *function, struct module *module);
+
+int assemble(uint32_t memory_size, uint16_t memory[memory_size],
+	     struct module *module);