Add exported variable (only functions for now), export main func, start execution from main func

1 files changed, 9 insertions, 7 deletions

diff --git a/include/program.h b/include/program.h
index 075bfca..e3a4ac9 100644
--- a/include/program.h
+++ b/include/program.h
@@ -31,13 +31,10 @@
 #define AMAL_PROGRAM_INSTRUCTION_INVALID_EXTERN_FUNC_INDEX -19
 #define AMAL_PROGRAM_NO_SUCH_EXTERNAL_FUNCTION -20
 #define AMAL_PROGRAM_EXTERN_FUNC_ALREADY_EXISTS -21
-
-#define AMAL_PROGRAM_MAGIC_NUMBER (u32)0xdec05eba
-#define AMAL_PROGRAM_MAJOR_VERSION 1
-#define AMAL_PROGRAM_MINOR_VERSION 0
-#define AMAL_PROGRAM_PATCH_VERSION 0
-
-#define AMAL_PROGRAM_NUM_REGISTERS 256
+#define AMAL_PROGRAM_INVALID_EXPORTED_FUNCTIONS -22
+#define AMAL_PROGRAM_INVALID_EXPORTED_FUNCTIONS_SIZE -23
+#define AMAL_PROGRAM_INSTRUCTION_INVALID_EXPORTED_FUNC_INDEX -24
+#define AMAL_PROGRAM_NO_MAIN_FUNC -25
 
 #define AMAL_PROGRAM_ARGS_SIZE_VARARGS -1
 
@@ -53,12 +50,17 @@ typedef struct {
     u8 *intermediates_start;  /* Reference inside @data */
     u8 *strings_start;        /* Reference inside @data */
     u8 *extern_funcs_start;   /* Reference inside @data */
+    u8 *exported_funcs;       /* Reference inside @data */
+    u8 *exported_funcs_end;   /* Reference inside @data */
+
     usize read_index;
+    u32 main_func_instruction_offset;
 
     u16 num_intermediates;
     u16 num_strings;
     u16 num_functions;
     u16 num_extern_functions;
+    u16 num_exported_functions;
 
     ArenaAllocator allocator; /* Owned. Used by @extern_funcs_map */
     HashMapType(BufferView, ProgramExternFunc) extern_funcs_map;