fix

diff --git a/mach/xenix3/libsys/signal.s b/mach/xenix3/libsys/signal.s
index b953a1a..e3d3b0d 100644 (file)
--- a/mach/xenix3/libsys/signal.s
+++ b/mach/xenix3/libsys/signal.s
@@ -56,8 +56,11 @@ ctch:
        push    si
        push    di
        mov     ax,2(bp)
+       sub     ax,3
        sub     ax,tbl
        shr     ax,1
+       mov     bx,ax
+       shr     ax,1
        push    ax
        call    table(bx)
        pop     di