int2f: sync flags before calling prev handler

Quite a long-standing bug.
dosemu2 · Jul 18, 2024 · 3ceb300 · 3ceb300
1 parent 45ae2b3
commit 3ceb300
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/kernel/int2f.asm b/kernel/int2f.asm
@@ -143,6 +143,11 @@ Int2f?14?1:
                pop bp
                iret
 Int2f?prev:
+               push bp
+               mov bp, sp
+               push WORD [bp+6]        ; sync flags
+               popf
+               pop bp
                jmp far [cs:_prev_int2f_handler]
 
 ; DRIVER.SYS calls - now only 0803.