1 /* $NetBSD: cdefs_elf.h,v 1.13 2002/11/01 22:58:44 thorpej 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 #define __indr_reference(sym,alias) /* nada, since we do weak refs */ 53 54 #if __STDC__ 55 56 #define __weak_alias(alias,sym) \ 57 __asm__(".weak " _C_LABEL_STRING(#alias) " ; " \ 58 _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym)); 59 #define __weak_extern(sym) \ 60 __asm__(".weak " _C_LABEL_STRING(#sym)); 61 #define __warn_references(sym,msg) \ 62 __asm__(".section .gnu.warning." #sym " ; .ascii \"" msg "\" ; .text"); 63 64 #else /* !__STDC__ */ 65 66 #ifdef __LEADING_UNDERSCORE 67 #define __weak_alias(alias,sym) ___weak_alias(_/**/alias,_/**/sym) 68 #define ___weak_alias(alias,sym) \ 69 __asm__(".weak alias ; alias = sym"); 70 #else 71 #define __weak_alias(alias,sym) \ 72 __asm__(".weak alias ; alias = sym"); 73 #endif 74 #ifdef __LEADING_UNDERSCORE 75 #define __weak_extern(sym) ___weak_extern(_/**/sym) 76 #define ___weak_extern(sym) \ 77 __asm__(".weak sym"); 78 #else 79 #define __weak_extern(sym) \ 80 __asm__(".weak sym"); 81 #endif 82 #define __warn_references(sym,msg) \ 83 __asm__(".section .gnu.warning.sym ; .ascii msg ; .text"); 84 85 #endif /* !__STDC__ */ 86 87 #if __STDC__ 88 #define __SECTIONSTRING(_sec, _str) \ 89 __asm__(".section " #_sec " ; .asciz \"" _str "\" ; .text") 90 #else 91 #define __SECTIONSTRING(_sec, _str) \ 92 __asm__(".section _sec ; .asciz _str ; .text") 93 #endif 94 95 #define __IDSTRING(_n,_s) __SECTIONSTRING(.ident,_s) 96 97 #define __RCSID(_s) __IDSTRING(rcsid,_s) 98 #define __SCCSID(_s) 99 #define __SCCSID2(_s) 100 #if 0 /* XXX userland __COPYRIGHTs have \ns in them */ 101 #define __COPYRIGHT(_s) __SECTIONSTRING(.copyright,_s) 102 #else 103 #define __COPYRIGHT(_s) \ 104 static const char copyright[] __attribute__((__unused__)) = _s 105 #endif 106 107 #define __KERNEL_RCSID(_n, _s) __RCSID(_s) 108 #define __KERNEL_SCCSID(_n, _s) 109 #if 0 /* XXX see above */ 110 #define __KERNEL_COPYRIGHT(_n, _s) __COPYRIGHT(_s) 111 #else 112 #define __KERNEL_COPYRIGHT(_n, _s) __SECTIONSTRING(.copyright, _s) 113 #endif 114 115 #ifndef __lint__ 116 #define __link_set_make_entry(set, sym) \ 117 static void const * const __link_set_##set##_sym_##sym \ 118 __section("link_set_" #set) __unused = &sym 119 #else 120 #define __link_set_make_entry(set, sym) \ 121 extern void const * const __link_set_##set##_sym_##sym 122 #endif /* __lint__ */ 123 124 #define __link_set_add_text(set, sym) __link_set_make_entry(set, sym) 125 #define __link_set_add_rodata(set, sym) __link_set_make_entry(set, sym) 126 #define __link_set_add_data(set, sym) __link_set_make_entry(set, sym) 127 #define __link_set_add_bss(set, sym) __link_set_make_entry(set, sym) 128 129 #define __link_set_decl(set, ptype) \ 130 extern ptype *__start_link_set_##set; \ 131 extern ptype *__stop_link_set_##set 132 133 #define __link_set_start(set) (&__start_link_set_##set) 134 #define __link_set_end(set) (&__stop_link_set_##set) 135 136 #define __link_set_count(set) \ 137 (__link_set_end(set) - __link_set_start(set)) 138 139 #endif /* !_SYS_CDEFS_ELF_H_ */ 140