StdLib/Include/sys/cdefs_aout.h

/*  $NetBSD: cdefs_aout.h,v 1.20 2006/05/18 17:55:38 christos Exp $ */

/*
 * Written by J.T. Conklin <jtc@wimsey.com> 01/17/95.
 * Public domain.
 */

#ifndef _SYS_CDEFS_AOUT_H_
#define _SYS_CDEFS_AOUT_H_

#define _C_LABEL(x)   __CONCAT(_,x)
#define _C_LABEL_STRING(x)  "_"x

#define ___RENAME(x)

#define __indr_reference(sym,alias) /* nada, since we do weak refs */

#ifdef __GNUC__
#if __STDC__
  #ifndef   DONT_USE_STRONG_WEAK_ALIAS
    #define __strong_alias(alias,sym)               \
        __asm(".global " _C_LABEL_STRING(#alias) "\n"     \
          _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));
    #define __weak_alias(alias,sym)           \
        __asm(".weak " _C_LABEL_STRING(#alias) "\n"     \
          _C_LABEL_STRING(#alias) " = " _C_LABEL_STRING(#sym));

    /* Do not use __weak_extern, use __weak_reference instead */
    #define __weak_extern(sym)            \
        __asm(".weak " _C_LABEL_STRING(#sym));

    #if __GNUC_PREREQ__(4, 0)
      #define __weak_reference(sym) __attribute__((__weakref__))
    #else
      #define __weak_reference(sym) ; __asm(".weak " _C_LABEL_STRING(#sym))
    #endif

    #define __warn_references(sym,msg)          \
      __asm(".stabs \"" msg "\",30,0,0,0");       \
      __asm(".stabs \"_" #sym "\",1,0,0,0");
  #else
    #define __strong_alias(alias,sym)   /* NOTHING */
    #define __weak_alias(alias,sym)     /* NOTHING */
    #define __weak_extern(sym)          /* NOTHING */
    #define __weak_reference(sym)       /* NOTHING */

    #if defined(__CC_ARM) || defined(__APPLE__)
      #define __warn_references(sym,msg)
    #else
      #define __warn_references(sym,msg)              \
              __asm(".stabs \"" msg "\",30,0,0,0");   \
              __asm(".stabs \"_" #sym "\",1,0,0,0");
    #endif
  #endif
#else   /* __STDC__ */
  #define __weak_alias(alias,sym) ___weak_alias(_/**/alias,_/**/sym)
  #define ___weak_alias(alias,sym)          \
      __asm(".weak alias\nalias = sym");
  /* Do not use __weak_extern, use __weak_reference instead */
  #define __weak_extern(sym) ___weak_extern(_/**/sym)
  #define ___weak_extern(sym)           \
      __asm(".weak sym");

  #if __GNUC_PREREQ__(4, 0)
    #define __weak_reference(sym) __attribute__((__weakref__))
  #else
    #define ___weak_reference(sym)  ; __asm(".weak sym");
    #define __weak_reference(sym) ___weak_reference(_/**/sym)
  #endif

  #define __warn_references(sym,msg)          \
    __asm(".stabs msg,30,0,0,0");         \
    __asm(".stabs \"_/**/sym\",1,0,0,0");
#endif /* __STDC__ */
#else /* __GNUC__ */
  #define __warn_references(sym,msg)
#endif /* __GNUC__ */

#if defined(__sh__)   /* XXX SH COFF */
#undef __indr_reference(sym,alias)
#undef __warn_references(sym,msg)
#define __warn_references(sym,msg)
#endif

#define __IDSTRING(_n,_s)           \
  __asm(".data ; .asciz \"" _s "\" ; .text")

#undef __KERNEL_RCSID

//#define __RCSID(_s) __IDSTRING(rcsid,_s)
#define __RCSID(_s)
#define __SCCSID(_s)
#define __SCCSID2(_s)
#if 0 /* XXX userland __COPYRIGHTs have \ns in them */
#define __COPYRIGHT(_s) __IDSTRING(copyright,_s)
#else
#define __COPYRIGHT(_s)             \
  static const char copyright[] __attribute__((__unused__)) = _s
#endif

#if defined(USE_KERNEL_RCSIDS) || !defined(_KERNEL)
#define __KERNEL_RCSID(_n,_s) __IDSTRING(__CONCAT(rcsid,_n),_s)
#else
#define __KERNEL_RCSID(_n,_s)
#endif
#define __KERNEL_SCCSID(_n,_s)
#define __KERNEL_COPYRIGHT(_n, _s) __IDSTRING(__CONCAT(copyright,_n),_s)

#ifndef __lint__
#define __link_set_make_entry(set, sym, type)       \
  static void const * const         \
      __link_set_##set##_sym_##sym __used = &sym;   \
  __asm(".stabs \"___link_set_" #set "\", " #type ", 0, 0, _" #sym)
#else
#define __link_set_make_entry(set, sym, type)       \
  extern void const * const __link_set_##set##_sym_##sym
#endif /* __lint__ */

#define __link_set_add_text(set, sym) __link_set_make_entry(set, sym, 23)
#define __link_set_add_rodata(set, sym) __link_set_make_entry(set, sym, 23)
#define __link_set_add_data(set, sym) __link_set_make_entry(set, sym, 25)
#define __link_set_add_bss(set, sym)  __link_set_make_entry(set, sym, 27)

#define __link_set_decl(set, ptype)         \
extern struct {               \
  int __ls_length;            \
  ptype *__ls_items[1];           \
} __link_set_##set

#define __link_set_start(set) (&(__link_set_##set).__ls_items[0])
#define __link_set_end(set)           \
  (&(__link_set_##set).__ls_items[(__link_set_##set).__ls_length])

#define __link_set_count(set) ((__link_set_##set).__ls_length)

#endif /* !_SYS_CDEFS_AOUT_H_ */