From af111c599297b3c4035ccdaafcae424f473cb2c3 Mon Sep 17 00:00:00 2001
From: Mwa <mwa@mwaaa.fr>
Date: Fri, 20 Mar 2026 19:30:00 +0100
Subject: [PATCH] minor interupt on halt responsivity improvement and final
 Cargo.toml args

---
 .cargo/config.toml |  2 ++
 Cargo.toml         |  3 ++-
 simu/src/cpu.rs    | 11 +++++++++--
 simu/src/main.rs   | 17 ++++++-----------
 4 files changed, 19 insertions(+), 14 deletions(-)
 create mode 100644 .cargo/config.toml

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..03f4879
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[build]
+rustflags = ["-Ctarget-cpu=native"]
diff --git a/Cargo.toml b/Cargo.toml
index 6388c27..e5a79c9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,4 +3,5 @@ resolver = "3"
 members = ["simu","asm","bitmap_to_asm"]
 
 [profile.release]
-debug = "line-tables-only"
+opt-level = 2
+# panic = "abort"
diff --git a/simu/src/cpu.rs b/simu/src/cpu.rs
index 410f2fb..1f7eb91 100644
--- a/simu/src/cpu.rs
+++ b/simu/src/cpu.rs
@@ -2,7 +2,7 @@ use crate::wait::WaitOnAtomic;
 #[cfg(feature = "debug")]
 use std::collections::HashMap;
 use std::{
-    hint::{likely, unlikely, unreachable_unchecked},
+    hint::{cold_path, likely, unlikely, unreachable_unchecked},
     io::Read,
     mem::transmute,
     ops::{Index, IndexMut},
@@ -518,6 +518,7 @@ impl Computer {
                                 (&SHARED.external_enabled_interupts)
                                     .store(self[reg1], std::sync::atomic::Ordering::Relaxed);
                             } else {
+                                cold_path();
                                 self.serve_interupt(InteruptKind::IllegalOpcode, [next_opcode]);
                             }
                         }
@@ -563,6 +564,7 @@ impl Computer {
                                     }
                                     //guaranted by the inequality and is multiple of 4
                                     _ => {
+                                        cold_path();
                                         self.serve_interupt(
                                             InteruptKind::IllegalOpcode,
                                             [next_opcode],
@@ -612,6 +614,7 @@ impl Computer {
                                     println!("awaiting interupt...");
                                 }
                                 SHARED.external_interupts.wait(0);
+                                return;
                             }
                             self.pc = ((addr + self.pc as u32) & 0x1FFF_FFFF) as usize;
                         }
@@ -729,7 +732,11 @@ impl Computer {
                             kind,
                             [rx.0.into(), self[ry], self.resolve(op2), opcode],
                         ),
-                        InteruptKind::IllegalOpcode => self.serve_interupt(kind, [next_opcode]),
+                        InteruptKind::IllegalOpcode => {
+                            cold_path();
+
+                            self.serve_interupt(kind, [next_opcode])
+                        }
                         _ => unsafe { unreachable_unchecked() },
                     }
                 }
diff --git a/simu/src/main.rs b/simu/src/main.rs
index 74bc09a..105a301 100644
--- a/simu/src/main.rs
+++ b/simu/src/main.rs
@@ -1,9 +1,4 @@
-#![feature(
-    likely_unlikely,
-    widening_mul,
-    sync_unsafe_cell,
-    int_lowest_highest_one
-)]
+#![feature(likely_unlikely, widening_mul, int_lowest_highest_one)]
 #![deny(clippy::all)]
 
 use std::env::args;
@@ -68,8 +63,9 @@ impl<'a> ApplicationHandler for App<'a> {
         let size = window.inner_size();
         let surface_texture = SurfaceTexture::new(size.width, size.height, window);
         let pix = PixelsBuilder::new(WIDTH, HEIGHT, surface_texture)
-        .clear_color(Color::BLACK)
-        .blend_state(BlendState::REPLACE).build() ;
+            .clear_color(Color::BLACK)
+            .blend_state(BlendState::REPLACE)
+            .build();
 
         self.pixels = Some(pix.unwrap());
     }
@@ -212,10 +208,9 @@ impl<'a> ApplicationHandler for App<'a> {
                 for (addr, ubgr) in cpu::SHARED.screen_buf.iter().enumerate() {
                     let raw = ubgr.load(std::sync::atomic::Ordering::Relaxed);
                     #[cfg(not(feature = "rgba"))]
-                    let rgba: [u8;4] = raw.to_le_bytes();
+                    let rgba: [u8; 4] = raw.to_le_bytes();
                     #[cfg(feature = "rgba")]
-                    let rgba =
-                        raw.to_be_bytes();
+                    let rgba = raw.to_be_bytes();
                     for i in 0..4 {
                         screen[addr * 4 + i] = rgba[i];
                     }