$OpenBSD: patch-callback_vacall_r_vacall-sparc_S,v 1.1 2010/09/23 13:38:33 joshe Exp $

Load the saved callback data from the stack into %g2, see the
  trampoline.c patch for more info.

--- callback/vacall_r/vacall-sparc.S.orig	Fri Nov 26 12:13:06 1999
+++ callback/vacall_r/vacall-sparc.S	Sat May  2 20:13:30 2009
@@ -5,6 +5,8 @@
 	DECLARE_FUNCTION(__vacall_r)
 	.proc	020
 C(__vacall_r:)
+	ld	[%sp+96], %g2
+	add	%sp, 8, %sp
 	!$PROLOGUE$ 0
 	save	%sp, -144, %sp
 	!$PROLOGUE$ 1