master
1/* $NetBSD: cdefs_aout.h,v 1.20 2006/05/18 17:55:38 christos Exp $ */
2
3/*
4 * Written by J.T. Conklin <jtc@wimsey.com> 01/17/95.
5 * Public domain.
6 */
7
8#ifndef _SYS_CDEFS_AOUT_H_
9#define _SYS_CDEFS_AOUT_H_
10
11#define _C_LABEL(x) __CONCAT(_,x)
12#define _C_LABEL_STRING(x) "_"x
13
14#if __STDC__
15#define ___RENAME(x) __asm(___STRING(_C_LABEL(x)))
16#else
17#define ___RENAME(x) ____RENAME(_/**/x)
18#define ____RENAME(x) __asm(___STRING(x))
19#endif
20
21#define __indr_reference(sym,alias) /* nada, since we do weak refs */
22
23#ifdef __GNUC__
24#if __STDC__
25#define __strong_alias(alias,sym) \
26 __asm(".global " _C_LABEL_STRING(#alias) "\n" \
27 _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
28#define __weak_alias(alias,sym) \
29 __asm(".weak " _C_LABEL_STRING(#alias) "\n" \
30 _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
31
32/* Do not use __weak_extern, use __weak_reference instead */
33#define __weak_extern(sym) \
34 __asm(".weak " _C_LABEL_STRING(#sym));
35
36#if __GNUC_PREREQ__(4, 0)
37#define __weak_reference(sym) __attribute__((__weakref__))
38#else
39#define __weak_reference(sym) ; __asm(".weak " _C_LABEL_STRING(#sym))
40#endif
41
42#define __warn_references(sym,msg) \
43 __asm(".stabs \"" msg "\",30,0,0,0"); \
44 __asm(".stabs \"_" #sym "\",1,0,0,0");
45#else /* __STDC__ */
46#define __weak_alias(alias,sym) ___weak_alias(_/**/alias,_/**/sym)
47#define ___weak_alias(alias,sym) \
48 __asm(".weak alias\nalias = sym");
49/* Do not use __weak_extern, use __weak_reference instead */
50#define __weak_extern(sym) ___weak_extern(_/**/sym)
51#define ___weak_extern(sym) \
52 __asm(".weak sym");
53
54#if __GNUC_PREREQ__(4, 0)
55#define __weak_reference(sym) __attribute__((__weakref__))
56#else
57#define ___weak_reference(sym) ; __asm(".weak sym");
58#define __weak_reference(sym) ___weak_reference(_/**/sym)
59#endif
60
61#define __warn_references(sym,msg) \
62 __asm(".stabs msg,30,0,0,0"); \
63 __asm(".stabs \"_/**/sym\",1,0,0,0");
64#endif /* __STDC__ */
65#else /* __GNUC__ */
66#define __warn_references(sym,msg)
67#endif /* __GNUC__ */
68
69#if defined(__sh__) /* XXX SH COFF */
70#undef __indr_reference(sym,alias)
71#undef __warn_references(sym,msg)
72#define __warn_references(sym,msg)
73#endif
74
75#define __IDSTRING(_n,_s) \
76 __asm(".data ; .asciz \"" _s "\" ; .text")
77
78#undef __KERNEL_RCSID
79
80#define __RCSID(_s) __IDSTRING(rcsid,_s)
81#define __SCCSID(_s)
82#define __SCCSID2(_s)
83#if 0 /* XXX userland __COPYRIGHTs have \ns in them */
84#define __COPYRIGHT(_s) __IDSTRING(copyright,_s)
85#else
86#define __COPYRIGHT(_s) \
87 static const char copyright[] __attribute__((__unused__)) = _s
88#endif
89
90#if defined(USE_KERNEL_RCSIDS) || !defined(_KERNEL)
91#define __KERNEL_RCSID(_n,_s) __IDSTRING(__CONCAT(rcsid,_n),_s)
92#else
93#define __KERNEL_RCSID(_n,_s)
94#endif
95#define __KERNEL_SCCSID(_n,_s)
96#define __KERNEL_COPYRIGHT(_n, _s) __IDSTRING(__CONCAT(copyright,_n),_s)
97
98#ifndef __lint__
99#define __link_set_make_entry(set, sym, type) \
100 static void const * const \
101 __link_set_##set##_sym_##sym __used = &sym; \
102 __asm(".stabs \"___link_set_" #set "\", " #type ", 0, 0, _" #sym)
103#else
104#define __link_set_make_entry(set, sym, type) \
105 extern void const * const __link_set_##set##_sym_##sym
106#endif /* __lint__ */
107
108#define __link_set_add_text(set, sym) __link_set_make_entry(set, sym, 23)
109#define __link_set_add_rodata(set, sym) __link_set_make_entry(set, sym, 23)
110#define __link_set_add_data(set, sym) __link_set_make_entry(set, sym, 25)
111#define __link_set_add_bss(set, sym) __link_set_make_entry(set, sym, 27)
112
113#define __link_set_decl(set, ptype) \
114extern struct { \
115 int __ls_length; \
116 ptype *__ls_items[1]; \
117} __link_set_##set
118
119#define __link_set_start(set) (&(__link_set_##set).__ls_items[0])
120#define __link_set_end(set) \
121 (&(__link_set_##set).__ls_items[(__link_set_##set).__ls_length])
122
123#define __link_set_count(set) ((__link_set_##set).__ls_length)
124
125#endif /* !_SYS_CDEFS_AOUT_H_ */