[DRAW] added begin drawing & destroy draw ctx stubs

Author: di

shared/syscalls/syscalls.c

@@ -33,4 +33,16 @@ void* realloc_sized(void* old_ptr, size_t old_size, size_t new_size){
     memcpy(new_ptr, old_ptr, min(old_size,new_size));
     free_sized(old_ptr, old_size);
     return new_ptr;
-}
+}
+
+#ifndef CROSS
+
+void begin_drawing(draw_ctx *ctx){
+
+}
+
+void destroy_draw_ctx(draw_ctx *ctx){
+
+}
+
+#endif

shared/syscalls/syscalls.h

@@ -28,8 +28,10 @@ extern void halt(uint32_t exit_code);
 extern uint16_t exec(const char* prog_name, int argc, const char* argv[]);
 
 extern void request_draw_ctx(draw_ctx*);
+extern void begin_drawing(draw_ctx *);
 extern void commit_draw_ctx(draw_ctx*);
 extern void resize_draw_ctx(draw_ctx*, uint32_t width, uint32_t height);
+extern void destroy_draw_ctx(draw_ctx *ctx);
 
 extern uint32_t gpu_char_size(uint32_t scale);