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Move bionic over to GCC's 'warning' attribute.

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This is a better solution than the old __warn_references because it's
a compile-time rather than link-time warning, it doesn't rely on something
that doesn't appear to be supported by gold (which is why you only used
to see these warnings on mips builds), and the errors refer to the exact
call site(s) rather than just telling you which object file contains a
reference to the bad function.

This is primarily so we can build bionic for aarch64; building libc.so
caused these warnings to fire (because link time is the wrong time) and
warnings are errors.

Change-Id: I5df9281b2a9d98b164a9b11807ea9472c6faa9e3
This commit is contained in:
Elliott Hughes
2013-12-17 20:43:30 -08:00
parent f293b15728
commit c13fb75cea
8 changed files with 22 additions and 165 deletions
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47
libc/arch-mips/include/machine/cdefs.h
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@@ -1,47 +0,0 @@
/* $OpenBSD: cdefs.h,v 1.4 2006/01/10 00:04:04 millert Exp $ */
/*
* Copyright (c) 2002-2003 Opsycon AB (www.opsycon.se / www.opsycon.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifndef _MIPS_CDEFS_H_
#define _MIPS_CDEFS_H_
#if defined(lint)
#define __indr_reference(sym,alias) __lint_equal__(sym,alias)
#define __warn_references(sym,msg)
#define __weak_alias(alias,sym) __lint_equal__(sym,alias)
#elif defined(__GNUC__) && defined(__STDC__)
#define __weak_alias(alias,sym) \
__asm__(".weak " __STRING(alias) " ; " \
__STRING(alias) " = " __STRING(sym))
#define __warn_references(sym,msg) \
__asm__(".section .gnu.warning." __STRING(sym) \
" ; .ascii \"" msg "\" ; .text")
#define __indr_references(sym,msg) /* nothing */
#endif
#endif /* !_MIPS_CDEFS_H_ */