StdLib/Include/sys/cdefs_aout.h

   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 #define ___RENAME(x)
  15
  16 #define __indr_reference(sym,alias) /* nada, since we do weak refs */
  17
  18 #ifdef __GNUC__
  19 #if __STDC__
  20   #ifndef   DONT_USE_STRONG_WEAK_ALIAS
  21     #define __strong_alias(alias,sym)               \
  22         __asm(".global " _C_LABEL_STRING(#alias) "\n"     \
  23           _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
  24     #define __weak_alias(alias,sym)           \
  25         __asm(".weak " _C_LABEL_STRING(#alias) "\n"     \
  26           _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
  27
  28     /* Do not use __weak_extern, use __weak_reference instead */
  29     #define __weak_extern(sym)            \
  30         __asm(".weak " _C_LABEL_STRING(#sym));
  31
  32     #if __GNUC_PREREQ__(4, 0)
  33       #define __weak_reference(sym) __attribute__((__weakref__))
  34     #else
  35       #define __weak_reference(sym) ; __asm(".weak " _C_LABEL_STRING(#sym))
  36     #endif
  37
  38     #define __warn_references(sym,msg)          \
  39       __asm(".stabs \"" msg "\",30,0,0,0");       \
  40       __asm(".stabs \"_" #sym "\",1,0,0,0");
  41   #else
  42     #define __strong_alias(alias,sym)   /* NOTHING */
  43     #define __weak_alias(alias,sym)     /* NOTHING */
  44     #define __weak_extern(sym)          /* NOTHING */
  45     #define __weak_reference(sym)       /* NOTHING */
  46
  47     #if defined(__CC_ARM) || defined(__APPLE__)
  48       #define __warn_references(sym,msg)
  49     #else
  50       #define __warn_references(sym,msg)              \
  51               __asm(".stabs \"" msg "\",30,0,0,0");   \
  52               __asm(".stabs \"_" #sym "\",1,0,0,0");
  53     #endif
  54   #endif
  55 #else   /* __STDC__ */
  56   #define __weak_alias(alias,sym) ___weak_alias(_/**/alias,_/**/sym)
  57   #define ___weak_alias(alias,sym)          \
  58       __asm(".weak alias\nalias = sym");
  59   /* Do not use __weak_extern, use __weak_reference instead */
  60   #define __weak_extern(sym) ___weak_extern(_/**/sym)
  61   #define ___weak_extern(sym)           \
  62       __asm(".weak sym");
  63
  64   #if __GNUC_PREREQ__(4, 0)
  65     #define __weak_reference(sym) __attribute__((__weakref__))
  66   #else
  67     #define ___weak_reference(sym)  ; __asm(".weak sym");
  68     #define __weak_reference(sym) ___weak_reference(_/**/sym)
  69   #endif
  70
  71   #define __warn_references(sym,msg)          \
  72     __asm(".stabs msg,30,0,0,0");         \
  73     __asm(".stabs \"_/**/sym\",1,0,0,0");
  74 #endif /* __STDC__ */
  75 #else /* __GNUC__ */
  76   #define __warn_references(sym,msg)
  77 #endif /* __GNUC__ */
  78
  79 #if defined(__sh__)   /* XXX SH COFF */
  80 #undef __indr_reference(sym,alias)
  81 #undef __warn_references(sym,msg)
  82 #define __warn_references(sym,msg)
  83 #endif
  84
  85 #define __IDSTRING(_n,_s)           \
  86   __asm(".data ; .asciz \"" _s "\" ; .text")
  87
  88 #undef __KERNEL_RCSID
  89
  90 //#define __RCSID(_s) __IDSTRING(rcsid,_s)
  91 #define __RCSID(_s)
  92 #define __SCCSID(_s)
  93 #define __SCCSID2(_s)
  94 #if 0 /* XXX userland __COPYRIGHTs have \ns in them */
  95 #define __COPYRIGHT(_s) __IDSTRING(copyright,_s)
  96 #else
  97 #define __COPYRIGHT(_s)             \
  98   static const char copyright[] __attribute__((__unused__)) = _s
  99 #endif
 100
 101 #if defined(USE_KERNEL_RCSIDS) || !defined(_KERNEL)
 102 #define __KERNEL_RCSID(_n,_s) __IDSTRING(__CONCAT(rcsid,_n),_s)
 103 #else
 104 #define __KERNEL_RCSID(_n,_s)
 105 #endif
 106 #define __KERNEL_SCCSID(_n,_s)
 107 #define __KERNEL_COPYRIGHT(_n, _s) __IDSTRING(__CONCAT(copyright,_n),_s)
 108
 109 #ifndef __lint__
 110 #define __link_set_make_entry(set, sym, type)       \
 111   static void const * const         \
 112       __link_set_##set##_sym_##sym __used = &sym;   \
 113   __asm(".stabs \"___link_set_" #set "\", " #type ", 0, 0, _" #sym)
 114 #else
 115 #define __link_set_make_entry(set, sym, type)       \
 116   extern void const * const __link_set_##set##_sym_##sym
 117 #endif /* __lint__ */
 118
 119 #define __link_set_add_text(set, sym) __link_set_make_entry(set, sym, 23)
 120 #define __link_set_add_rodata(set, sym) __link_set_make_entry(set, sym, 23)
 121 #define __link_set_add_data(set, sym) __link_set_make_entry(set, sym, 25)
 122 #define __link_set_add_bss(set, sym)  __link_set_make_entry(set, sym, 27)
 123
 124 #define __link_set_decl(set, ptype)         \
 125 extern struct {               \
 126   int __ls_length;            \
 127   ptype *__ls_items[1];           \
 128 } __link_set_##set
 129
 130 #define __link_set_start(set) (&(__link_set_##set).__ls_items[0])
 131 #define __link_set_end(set)           \
 132   (&(__link_set_##set).__ls_items[(__link_set_##set).__ls_length])
 133
 134 #define __link_set_count(set) ((__link_set_##set).__ls_length)
 135
 136 #endif /* !_SYS_CDEFS_AOUT_H_ */