Keep FPU arguments within the FPU stack

I can't believe I haven't had to do this yet
mehfooz09 · Jan 6, 2020 · 64bc899 · 64bc899
1 parent 5f308a7
commit 64bc899
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/emu/fpu.c b/emu/fpu.c
@@ -5,7 +5,7 @@
 #include "emu/float80.h"
 #include "emu/fpu.h"
 
-#define ST(i) cpu->fp[cpu->top + i]
+#define ST(i) cpu->fp[(cpu->top + i) % 8]
 
 static void fpu_push(struct cpu_state *cpu, float80 f) {
     cpu->top--;