gcc/gcc/config/lynx.h

/* Target independent definitions for LynxOS using gas and gnu ld.
   Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000, 2002
   Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical.
   We can get quite a bit from generic svr3, but have to do some overrides.  */

#include "svr3.h"

/* Define various macros, depending on the combination of flags.  */

#undef CPP_SPEC
#define CPP_SPEC "%{mthreads:-D_MULTITHREADED}  \
  %{mposix:-D_POSIX_SOURCE}  \
  %{msystem-v:-I/usr/include_v}"

/* No asm spec needed, since using GNU assembler always.  */

/* No linker spec needed, since using GNU linker always.  */

#undef LIB_SPEC
#define LIB_SPEC "%{mthreads:-L/lib/thread/}  \
  %{msystem-v:-lc_v}  \
  %{!msystem-v:%{mposix:-lc_p} -lc -lm}"

/* Set the appropriate names for the Lynx startfiles.  */

#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{p:%{mthreads:thread/pinit1.o%s}%{!mthreads:pinit1.o%s}}%{!p:%{msystem-v:vinit1.o%s -e_start}%{!msystem-v:%{mthreads:thread/init1.o%s}%{!mthreads:init1.o%s}}}"

#undef ENDFILE_SPEC
#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"

/* Override the svr3 versions.  */

#undef WCHAR_TYPE
#define WCHAR_TYPE "int"

#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"

/* We want to output DBX (stabs) debugging information normally.  */

#define DBX_DEBUGGING_INFO 1
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

/* It is convenient to be able to generate standard coff debugging
   if requested via -gcoff.  */

#define SDB_DEBUGGING_INFO 1

/* Be function-relative for block and source line stab directives.  */

#define DBX_BLOCKS_FUNCTION_RELATIVE 1

/* but, to make this work, functions must appear prior to line info */

#define DBX_FUNCTION_FIRST

/* Generate a blank trailing N_SO to mark the end of the .o file, since
   we can't depend upon the linker to mark .o file boundaries with
   embedded stabs.  */

#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)			\
  fprintf (FILE,							\
	   "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)

#undef  ASM_OUTPUT_SOURCE_LINE
#define ASM_OUTPUT_SOURCE_LINE(file, line, counter)	\
  { fprintf (file, ".stabn 68,0,%d,.LM%d-",		\
	     line, counter);				\
    assemble_name (file,				\
		   XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
    fprintf (file, "\n.LM%d:\n", counter); }

/* Handle #pragma pack and sometimes #pragma weak.  */

#define HANDLE_SYSV_PRAGMA 1

/* Some additional command-line options.  */

#define TARGET_THREADS	(target_flags & MASK_THREADS)
#define MASK_THREADS	0x40000000

#define TARGET_POSIX	(target_flags & MASK_POSIX)
#define MASK_POSIX	0x20000000

#define TARGET_SYSTEM_V	(target_flags & MASK_SYSTEM_V)
#define MASK_SYSTEM_V	0x10000000

#undef SUBTARGET_SWITCHES
#define SUBTARGET_SWITCHES \
    {"threads",		MASK_THREADS},		\
    {"posix",		MASK_POSIX},		\
    {"system-v",	MASK_SYSTEM_V},

#undef SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS \
do {								\
  if (TARGET_SYSTEM_V && profile_flag)				\
    warning ("-msystem-v and -p are incompatible");		\
  if (TARGET_SYSTEM_V && TARGET_THREADS)			\
    warning ("-msystem-v and -mthreads are incompatible");	\
} while (0)

/* Since init.o et al put all sorts of stuff into the init section,
   we can't use the standard init section support in crtbegin.o.  */

#undef INIT_SECTION_ASM_OP

#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_fini

#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS					\
  FINI_SECTION_FUNCTION

#undef CTORS_SECTION_ASM_OP
#define CTORS_SECTION_ASM_OP	"\t.section\t.ctors"
#undef DTORS_SECTION_ASM_OP
#define DTORS_SECTION_ASM_OP	"\t.section\t.dtors"

#undef DO_GLOBAL_CTORS_BODY
#undef DO_GLOBAL_DTORS_BODY

/* LynxOS doesn't have mcount.  */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(file, profile_label_no)