c13fb75cea
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
137 lines
5 KiB
C
137 lines
5 KiB
C
/* $NetBSD: cdefs_elf.h,v 1.22 2005/02/26 22:25:34 perry Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _SYS_CDEFS_ELF_H_
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#define _SYS_CDEFS_ELF_H_
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#ifdef __LEADING_UNDERSCORE
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#define _C_LABEL(x) __CONCAT(_,x)
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#define _C_LABEL_STRING(x) "_"x
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#else
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#define _C_LABEL(x) x
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#define _C_LABEL_STRING(x) x
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#endif
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#define ___RENAME(x) __asm__(___STRING(_C_LABEL(x)))
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#define __indr_reference(sym,alias) /* nada, since we do weak refs */
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#define __strong_alias(alias,sym) \
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__asm__(".global " _C_LABEL_STRING(#alias) "\n" \
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_C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
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#define __weak_alias(alias,sym) \
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__asm__(".weak " _C_LABEL_STRING(#alias) "\n" \
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_C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
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#define __weak_extern(sym) \
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__asm__(".weak " _C_LABEL_STRING(#sym));
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/* We use __warnattr instead of __warn_references.
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* TODO: remove this and put an empty definition in one of the upstream-* compatibility headers.
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*/
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#define __warn_references(sym,msg) \
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/*__asm__(".section .gnu.warning." #sym "\n\t.ascii \"" msg "\"\n\t.text");*/
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#define __SECTIONSTRING(_sec, _str) \
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__asm__(".section " #_sec "\n\t.asciz \"" _str "\"\n\t.previous")
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/* GCC visibility helper macro */
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/* This must be used to tag non-static functions that are private, i.e.
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* never exposed by the shared library. */
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#define __LIBC_HIDDEN__ \
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__attribute__ ((visibility ("hidden")))
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/* This must be used to tag non-static functions that are public, i.e.
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* exposed by the shared library, and part of the stable NDK ABI */
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#define __LIBC_ABI_PUBLIC__ \
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__attribute__ ((visibility ("default")))
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/* This must be used to tag non-static functions that must be exported
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* by the shared library, but whose implementation is private to the
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* platform. For now this is equivalent to __LIBC_ABI_PUBLIC__, but we
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* may want to change this later.
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*/
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#define __LIBC_ABI_PRIVATE__ \
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__attribute__ ((visibility ("default")))
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#define __IDSTRING(_n,_s) __SECTIONSTRING(.ident,_s)
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#define __RCSID(_s) __IDSTRING(rcsid,_s)
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#define __SCCSID(_s)
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#define __SCCSID2(_s)
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#if 0 /* XXX userland __COPYRIGHTs have \ns in them */
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#define __COPYRIGHT(_s) __SECTIONSTRING(.copyright,_s)
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#else
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#define __COPYRIGHT(_s) \
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static const char copyright[] \
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__attribute__((__unused__,__section__(".copyright"))) = _s
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#endif
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#define __KERNEL_RCSID(_n, _s) __RCSID(_s)
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#define __KERNEL_SCCSID(_n, _s)
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#if 0 /* XXX see above */
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#define __KERNEL_COPYRIGHT(_n, _s) __COPYRIGHT(_s)
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#else
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#define __KERNEL_COPYRIGHT(_n, _s) __SECTIONSTRING(.copyright, _s)
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#endif
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#ifndef __lint__
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#define __link_set_make_entry(set, sym) \
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static void const * const __link_set_##set##_sym_##sym \
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__section("link_set_" #set) __used = &sym
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#define __link_set_make_entry2(set, sym, n) \
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static void const * const __link_set_##set##_sym_##sym##_##n \
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__section("link_set_" #set) __used = &sym[n]
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#else
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#define __link_set_make_entry(set, sym) \
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extern void const * const __link_set_##set##_sym_##sym
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#define __link_set_make_entry2(set, sym, n) \
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extern void const * const __link_set_##set##_sym_##sym##_##n
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#endif /* __lint__ */
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#define __link_set_add_text(set, sym) __link_set_make_entry(set, sym)
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#define __link_set_add_rodata(set, sym) __link_set_make_entry(set, sym)
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#define __link_set_add_data(set, sym) __link_set_make_entry(set, sym)
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#define __link_set_add_bss(set, sym) __link_set_make_entry(set, sym)
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#define __link_set_add_text2(set, sym, n) __link_set_make_entry2(set, sym, n)
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#define __link_set_add_rodata2(set, sym, n) __link_set_make_entry2(set, sym, n)
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#define __link_set_add_data2(set, sym, n) __link_set_make_entry2(set, sym, n)
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#define __link_set_add_bss2(set, sym, n) __link_set_make_entry2(set, sym, n)
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#define __link_set_decl(set, ptype) \
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extern ptype * const __start_link_set_##set[]; \
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extern ptype * const __stop_link_set_##set[] \
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#define __link_set_start(set) (__start_link_set_##set)
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#define __link_set_end(set) (__stop_link_set_##set)
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#define __link_set_count(set) \
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(__link_set_end(set) - __link_set_start(set))
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#endif /* !_SYS_CDEFS_ELF_H_ */
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