Fix gradient.asm example

maximecb · Sep 3, 2024 · 947b3a9 · 947b3a9
1 parent d3c3293
commit 947b3a9
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Showing 2 changed files with 18 additions and 9 deletions.
diff --git a/vm/examples/gradient.asm b/vm/examples/gradient.asm
@@ -5,6 +5,9 @@
 PIXEL_BUFFER:
 .zero 1_920_000;
 
+EVENT:
+.zero 256;
+
 WINDOW_TITLE:
 .stringz "UVM Gradient Example";
 
@@ -118,14 +121,17 @@ push 0;
 push PIXEL_BUFFER;
 syscall window_draw_frame;
 
-
-
-#syscall window_wait_event;
-
-
-
-
-
-# Return to the event loop
+# Wait until the user closes the window
+WAIT_FOR_EVENT:
+push EVENT;
+syscall window_wait_event;
+push EVENT;
+load_u16;
+# Check for EVENT_QUIT
+push_u32 0;
+eq_u64;
+jz WAIT_FOR_EVENT;
+
+# End program
 push 0;
 ret;
diff --git a/vm/src/asm.rs b/vm/src/asm.rs
@@ -514,6 +514,9 @@ impl Assembler
             }
         }
 
+        // TODO:
+        // Populate the available constants
+
         Self {
             const_map: HashMap::new(),
             syscall_map: syscall_map,