11.1Sjoerg/*-
21.1Sjoerg * Copyright (c) 2014 The NetBSD Foundation, Inc.
31.1Sjoerg * All rights reserved.
41.1Sjoerg *
51.1Sjoerg * This code is derived from software contributed to The NetBSD Foundation
61.1Sjoerg * by Joerg Sonnenberger.
71.1Sjoerg *
81.1Sjoerg * Redistribution and use in source and binary forms, with or without
91.1Sjoerg * modification, are permitted provided that the following conditions
101.1Sjoerg * are met:
111.1Sjoerg * 1. Redistributions of source code must retain the above copyright
121.1Sjoerg *    notice, this list of conditions and the following disclaimer.
131.1Sjoerg * 2. Redistributions in binary form must reproduce the above copyright
141.1Sjoerg *    notice, this list of conditions and the following disclaimer in the
151.1Sjoerg *    documentation and/or other materials provided with the distribution.
161.1Sjoerg *
171.1Sjoerg * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
181.1Sjoerg * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
191.1Sjoerg * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
201.1Sjoerg * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
211.1Sjoerg * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
221.1Sjoerg * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
231.1Sjoerg * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
241.1Sjoerg * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
251.1Sjoerg * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
261.1Sjoerg * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
271.1Sjoerg * POSSIBILITY OF SUCH DAMAGE.
281.1Sjoerg */
291.1Sjoerg
301.1Sjoerg#include <stdlib.h>
311.1Sjoerg#include <string.h>
321.1Sjoerg
331.8Sskrll/*
341.10Schristos * Not supported on hppa
351.8Sskrll */
361.10Schristos#if !defined(__hppa__)
371.8Sskrll
381.7Sjoergstatic long long
391.1Sjoergifunc1(void)
401.1Sjoerg{
411.7Sjoerg	return 0xdeadbeefll;
421.1Sjoerg}
431.1Sjoerg
441.7Sjoergstatic long long
451.1Sjoergifunc2(void)
461.1Sjoerg{
471.7Sjoerg	return 0xbeefdeadll;
481.1Sjoerg}
491.1Sjoerg
501.1Sjoergstatic __attribute__((used))
511.7Sjoerglong long (*resolve_ifunc(void))(void)
521.1Sjoerg{
531.1Sjoerg	const char *e = getenv("USE_IFUNC2");
541.1Sjoerg	return e && strcmp(e, "1") == 0 ? ifunc2 : ifunc1;
551.1Sjoerg}
561.1Sjoerg
571.5Sjoergstatic __attribute__((used))
581.7Sjoerglong long (*resolve_ifunc2(void))(void)
591.5Sjoerg{
601.5Sjoerg	const char *e = getenv("USE_IFUNC2");
611.5Sjoerg	return e && strcmp(e, "1") == 0 ? ifunc1 : ifunc2;
621.5Sjoerg}
631.5Sjoerg
641.4Sjoerg__ifunc(ifunc, resolve_ifunc);
651.5Sjoerg__hidden_ifunc(ifunc_hidden, resolve_ifunc2);
661.5Sjoerg
671.7Sjoerglong long ifunc_hidden(void);
681.7Sjoerglong long ifunc_plt(void);
691.5Sjoerg
701.7Sjoerglong long ifunc_plt(void)
711.5Sjoerg{
721.5Sjoerg	return ifunc_hidden();
731.5Sjoerg}
741.6Sjoerg
751.7Sjoerglong long (*ifunc_indirect(void))(void);
761.6Sjoerg
771.7Sjoerglong long (*ifunc_indirect(void))(void)
781.6Sjoerg{
791.6Sjoerg	return ifunc_hidden;
801.6Sjoerg}
811.8Sskrll#endif
82