From e1a8006af704ab8220a27b821fefb01403501a08 Mon Sep 17 00:00:00 2001
From: Simon Gellis <simongellis@gmail.com>
Date: Sat, 18 Jan 2025 13:57:19 -0500
Subject: [PATCH] Statically compile that callback too

---
 build.rs                        | 1 +
 src/emulator/shrooms_vb_core.rs | 1 +
 2 files changed, 2 insertions(+)

diff --git a/build.rs b/build.rs
index 44fd098..aeb1a79 100644
--- a/build.rs
+++ b/build.rs
@@ -24,6 +24,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         .define("VB_SIGNED_PROPAGATE", None)
         .define("VB_DIV_GENERIC", None)
         .define("VB_DIRECT_EXECUTE", "on_execute")
+        .define("VB_DIRECT_FRAME", "on_frame")
         .define("VB_DIRECT_READ", "on_read")
         .define("VB_DIRECT_WRITE", "on_write")
         .file(Path::new("shrooms-vb-core/core/vb.c"))
diff --git a/src/emulator/shrooms_vb_core.rs b/src/emulator/shrooms_vb_core.rs
index b27b9d8..53c99de 100644
--- a/src/emulator/shrooms_vb_core.rs
+++ b/src/emulator/shrooms_vb_core.rs
@@ -170,6 +170,7 @@ extern "C" {
     fn vb_write(sim: *mut VB, address: u32, _type: VBDataType, value: i32) -> i32;
 }
 
+#[no_mangle]
 extern "C" fn on_frame(sim: *mut VB) -> c_int {
     // SAFETY: the *mut VB owns its userdata.
     // There is no way for the userdata to be null or otherwise invalid.