toolchain/gcc/libgloss/libnosys/warning.h

   1 #ifndef __WARNING_H__
   2 #define __WARNING_H__
   3
   4 #ifdef HAVE_GNU_LD
   5 # ifdef HAVE_ELF
   6
   7 /* We want the .gnu.warning.SYMBOL section to be unallocated.  */
   8 #  ifdef HAVE_ASM_PREVIOUS_DIRECTIVE
   9 #   define __make_section_unallocated(section_string)   \
  10   asm(".section " section_string "; .previous");
  11 #  elif defined (HAVE_ASM_POPSECTION_DIRECTIVE)
  12 #   define __make_section_unallocated(section_string)   \
  13   asm(".pushsection " section_string "; .popsection");
  14 #  else
  15 #   define __make_section_unallocated(section_string)
  16 #  endif
  17
  18 #  ifdef HAVE_SECTION_ATTRIBUTES
  19 #   define link_warning(symbol, msg)                     \
  20   __make_section_unallocated (".gnu.warning." #symbol)  \
  21   static const char __evoke_link_warning_##symbol[]     \
  22     __attribute__ ((section (".gnu.warning." #symbol))) = msg;
  23 #  else
  24 #   define link_warning(symbol, msg)
  25 #  endif
  26
  27 #else /* !ELF */
  28
  29 #  define link_warning(symbol, msg)             \
  30   asm(".stabs \"" msg "\",30,0,0,0\n"   \
  31       ".stabs \"" __SYMBOL_PREFIX #symbol "\",1,0,0,0\n");
  32 # endif
  33 #else /* !GNULD */
  34 /* We will never be heard; they will all die horribly.  */
  35 # define link_warning(symbol, msg)
  36 #endif
  37
  38 /* A canned warning for sysdeps/stub functions.  */
  39 #define stub_warning(name) \
  40   link_warning (name, \
  41                 "warning: " #name " is not implemented and will always fail")
  42
  43 #endif /* __WARNING_H__ */