4730a8cbec
- fix _C_LABEL so that it actually works. - make __RENAME use _C_LABEL. - fix __RENAME so that it expects an unquoted argument. - fix __indr_reference and __warn_references so that they supply their own final semicolon. - define __warn_references to nothing if not GNU C (required by the way it's used). The __warn_references semicolon change has to be made so that __warn_references can be defined into nothing. (A ; all by itself isn't a great idea.) The __indr_reference change was made for consistency.
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/* $NetBSD: cdefs.h,v 1.10 1997/11/04 23:09:23 thorpej 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 _MACHINE_CDEFS_H_
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#define _MACHINE_CDEFS_H_
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#define _C_LABEL(x) x
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#ifdef __GNUC__
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#define __RENAME(x) __asm__(___STRING(_C_LABEL(x)))
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#endif
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#ifdef __ELF__
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#define __DO_NOT_DO_WEAK__ /* NO WEAK SYMS IN LIBC YET */
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#ifndef __DO_NOT_DO_WEAK__
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#define __indr_reference(sym,alias) /* nada, since we do weak refs */
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#endif /* !__DO_NOT_DO_WEAK__ */
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#ifdef __STDC__
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#ifndef __DO_NOT_DO_WEAK__
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#define __weak_alias(alias,sym) \
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__asm__(".weak " #alias " ; " #alias " = " #sym);
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#endif /* !__DO_NOT_DO_WEAK__ */
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#define __warn_references(sym,msg) \
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__asm__(".section .gnu.warning." #sym " ; .ascii \"" msg "\" ; .text");
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#else /* !__STDC__ */
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#ifndef __DO_NOT_DO_WEAK__
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#define __weak_alias(alias,sym) \
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__asm__(".weak alias ; alias = sym");
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#endif /* !__DO_NOT_DO_WEAK__ */
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#define __warn_references(sym,msg) \
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__asm__(".section .gnu.warning.sym ; .ascii msg ; .text");
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#endif /* !__STDC__ */
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#else /* !__ELF__ */
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/*
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* Very little to do if not ELF: we support neither indirect or
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* weak references, and don't do anything with warnings.
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*/
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#define __warn_references(sym,msg) /* nothing */
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#endif /* !__ELF__ */
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#ifdef _KERNEL
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#ifdef __ELF__
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#ifdef __STDC__
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#define __KERNEL_SECTIONSTRING(_sec, _str) \
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__asm__(".section " #_sec " ; .asciz \"" _str "\" ; .text")
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#else
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#define __KERNEL_SECTIONSTRING(_sec, _str) \
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__asm__(".section _sec ; .asciz _str ; .text")
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#endif
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#define __KERNEL_RCSID(_n, _s) __KERNEL_SECTIONSTRING(.ident, _s)
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#define __KERNEL_COPYRIGHT(_n, _s) __KERNEL_SECTIONSTRING(.copyright, _s)
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#else /* __ELF__ */
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#define __KERNEL_RCSID(_n, _s) \
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static const char __CONCAT(rcsid,_n)[] \
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__attribute__ ((unused)) = _s
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#define __KERNEL_COPYRIGHT(_n, _s) \
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static const char __CONCAT(copyright,_n)[] \
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__attribute__ ((unused)) = _s
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#endif /* __ELF__ */
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#ifdef NO_KERNEL_RCSIDS
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#undef __KERNEL_RCSID
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#define __KERNEL_RCSID(_n, _s) /* nothing */
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#endif
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CDEFS_H_ */
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