fix(pipeline): gang.gba works

src/cpu/arm/branch.zig

@@ -11,8 +11,9 @@ pub fn branch(comptime L: bool) InstrFn {
         fn inner(cpu: *Arm7tdmi, _: *Bus, opcode: u32) void {
             if (L) cpu.r[14] = cpu.r[15] - 4;
 
-            cpu.r[15] = cpu.r[15] +% (sext(u32, u24, opcode) << 2);
-            cpu.reloadPipeline(u32);
+            const offset = sext(u32, u24, opcode) << 2;
+            cpu.r[15] = cpu.r[15] +% offset;
+            cpu.pipe.flush();
         }
     }.inner;
 }
@@ -23,10 +24,10 @@ pub fn branchAndExchange(cpu: *Arm7tdmi, _: *Bus, opcode: u32) void {
     if (cpu.r[rn] & 1 == 1) {
         cpu.r[15] = cpu.r[rn] & ~@as(u32, 1);
         cpu.cpsr.t.set();
-        cpu.reloadPipeline(u16);
     } else {
         cpu.r[15] = cpu.r[rn] & ~@as(u32, 3);
         cpu.cpsr.t.unset();
-        cpu.reloadPipeline(u32);
     }
+
+    cpu.pipe.flush();
 }