1 /* $NetBSD: cdefs_elf.h,v 1.11 2002/01/27 07:19:25 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #ifndef _SYS_CDEFS_ELF_H_ 31 #define _SYS_CDEFS_ELF_H_ 32 33 #ifdef __LEADING_UNDERSCORE 34 #define _C_LABEL(x) __CONCAT(_,x) 35 #define _C_LABEL_STRING(x) "_"x 36 #else 37 #define _C_LABEL(x) x 38 #define _C_LABEL_STRING(x) x 39 #endif 40 41 #if __STDC__ 42 #define ___RENAME(x) __asm__(___STRING(_C_LABEL(x))) 43 #else 44 #ifdef __LEADING_UNDERSCORE 45 #define ___RENAME(x) ____RENAME(_/**/x) 46 #define ____RENAME(x) __asm__(___STRING(x)) 47 #else 48 #define ___RENAME(x) __asm__(___STRING(x)) 49 #endif 50 #endif 51 52 #undef __DO_NOT_DO_WEAK__ /* we use weak syms */ 53 54 #ifndef __DO_NOT_DO_WEAK__ 55 #define __indr_reference(sym,alias) /* nada, since we do weak refs */ 56 #endif /* !__DO_NOT_DO_WEAK__ */ 57 58 #if __STDC__ 59 60 #ifndef __DO_NOT_DO_WEAK__ 61 #define __weak_alias(alias,sym) \ 62 __asm__(".weak " _C_LABEL_STRING(#alias) " ; " \ 63 _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym)); 64 #endif /* !__DO_NOT_DO_WEAK__ */ 65 #define __weak_extern(sym) \ 66 __asm__(".weak " _C_LABEL_STRING(#sym)); 67 #define __warn_references(sym,msg) \ 68 __asm__(".section .gnu.warning." #sym " ; .ascii \"" msg "\" ; .text"); 69 70 #else /* !__STDC__ */ 71 72 #ifndef __DO_NOT_DO_WEAK__ 73 #ifdef __LEADING_UNDERSCORE 74 #define __weak_alias(alias,sym) ___weak_alias(_/**/alias,_/**/sym) 75 #define ___weak_alias(alias,sym) \ 76 __asm__(".weak alias ; alias = sym"); 77 #else 78 #define __weak_alias(alias,sym) \ 79 __asm__(".weak alias ; alias = sym"); 80 #endif 81 #endif /* !__DO_NOT_DO_WEAK__ */ 82 #ifdef __LEADING_UNDERSCORE 83 #define __weak_extern(sym) ___weak_extern(_/**/sym) 84 #define ___weak_extern(sym) \ 85 __asm__(".weak sym"); 86 #else 87 #define __weak_extern(sym) \ 88 __asm__(".weak sym"); 89 #endif 90 #define __warn_references(sym,msg) \ 91 __asm__(".section .gnu.warning.sym ; .ascii msg ; .text"); 92 93 #endif /* !__STDC__ */ 94 95 #if __STDC__ 96 #define __SECTIONSTRING(_sec, _str) \ 97 __asm__(".section " #_sec " ; .asciz \"" _str "\" ; .text") 98 #else 99 #define __SECTIONSTRING(_sec, _str) \ 100 __asm__(".section _sec ; .asciz _str ; .text") 101 #endif 102 103 #define __IDSTRING(_n,_s) __SECTIONSTRING(.ident,_s) 104 105 #define __RCSID(_s) __IDSTRING(rcsid,_s) 106 #define __SCCSID(_s) 107 #define __SCCSID2(_s) 108 #if 0 /* XXX userland __COPYRIGHTs have \ns in them */ 109 #define __COPYRIGHT(_s) __SECTIONSTRING(.copyright,_s) 110 #else 111 #define __COPYRIGHT(_s) \ 112 static const char copyright[] __attribute__((__unused__)) = _s 113 #endif 114 115 #define __KERNEL_RCSID(_n, _s) __RCSID(_s) 116 #define __KERNEL_SCCSID(_n, _s) 117 #if 0 /* XXX see above */ 118 #define __KERNEL_COPYRIGHT(_n, _s) __COPYRIGHT(_s) 119 #else 120 #define __KERNEL_COPYRIGHT(_n, _s) __SECTIONSTRING(.copyright, _s) 121 #endif 122 123 #endif /* !_SYS_CDEFS_ELF_H_ */ 124