gcc/config/lynx.h

   1 /* Target independent definitions for LynxOS using gas and gnu ld.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* LynxOS is a multi-platform Unix, similar to SVR3, but not identical.  */
  23
  24 /* Define various macros, depending on the combination of flags.  */
  25
  26 #undef CPP_SPEC
  27 #define CPP_SPEC "%{mthreads:-D_MULTITHREADED}  \
  28   %{mposix:-D_POSIX_SOURCE}  \
  29   %{msystem-v:-I/usr/include_v}"
  30
  31 /* No asm spec needed, since using GNU assembler always.  */
  32
  33 /* No linker spec needed, since using GNU linker always.  */
  34
  35 #undef LIB_SPEC
  36 #define LIB_SPEC "%{mthreads:-L/lib/thread/}  \
  37   %{msystem-v:-lc_v}  \
  38   %{!msystem-v:%{mposix:-lc_p} -lc -lm}"
  39
  40 /* Set the appropriate names for the Lynx startfiles.  */
  41
  42 #undef STARTFILE_SPEC
  43 #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}}}"
  44
  45 #undef ENDFILE_SPEC
  46 #define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
  47
  48 /* Override the svr3 versions.  */
  49
  50 #undef WCHAR_TYPE
  51 #define WCHAR_TYPE "int"
  52
  53 #undef PTRDIFF_TYPE
  54 #define PTRDIFF_TYPE "long int"
  55
  56 /* We want to output DBX (stabs) debugging information normally.  */
  57
  58 #define DBX_DEBUGGING_INFO 1
  59 #undef PREFERRED_DEBUGGING_TYPE
  60 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  61
  62 /* It is convenient to be able to generate standard coff debugging
  63    if requested via -gcoff.  */
  64
  65 #define SDB_DEBUGGING_INFO 1
  66
  67 /* Be function-relative for block and source line stab directives.  */
  68
  69 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
  70
  71 /* but, to make this work, functions must appear prior to line info */
  72
  73 #define DBX_FUNCTION_FIRST
  74
  75 /* Generate a blank trailing N_SO to mark the end of the .o file, since
  76    we can't depend upon the linker to mark .o file boundaries with
  77    embedded stabs.  */
  78
  79 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
  80   fprintf (FILE,                                                        \
  81            "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
  82
  83 #undef  ASM_OUTPUT_SOURCE_LINE
  84 #define ASM_OUTPUT_SOURCE_LINE(file, line, counter)     \
  85   { fprintf (file, ".stabn 68,0,%d,.LM%d-",             \
  86              line, counter);                            \
  87     assemble_name (file,                                \
  88                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
  89     fprintf (file, "\n.LM%d:\n", counter); }
  90
  91 /* Handle #pragma pack and sometimes #pragma weak.  */
  92
  93 #define HANDLE_SYSV_PRAGMA 1
  94
  95 /* Some additional command-line options.  */
  96
  97 #define TARGET_THREADS  (target_flags & MASK_THREADS)
  98 #define MASK_THREADS    0x40000000
  99
 100 #define TARGET_POSIX    (target_flags & MASK_POSIX)
 101 #define MASK_POSIX      0x20000000
 102
 103 #define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
 104 #define MASK_SYSTEM_V   0x10000000
 105
 106 #undef SUBTARGET_SWITCHES
 107 #define SUBTARGET_SWITCHES \
 108     {"threads",         MASK_THREADS},          \
 109     {"posix",           MASK_POSIX},            \
 110     {"system-v",        MASK_SYSTEM_V},
 111
 112 #undef SUBTARGET_OVERRIDE_OPTIONS
 113 #define SUBTARGET_OVERRIDE_OPTIONS \
 114 do {                                                            \
 115   if (TARGET_SYSTEM_V && profile_flag)                          \
 116     warning ("-msystem-v and -p are incompatible");             \
 117   if (TARGET_SYSTEM_V && TARGET_THREADS)                        \
 118     warning ("-msystem-v and -mthreads are incompatible");      \
 119 } while (0)
 120
 121 /* Since init.o et al put all sorts of stuff into the init section,
 122    we can't use the standard init section support in crtbegin.o.  */
 123
 124 #undef INIT_SECTION_ASM_OP
 125
 126 #undef EXTRA_SECTIONS
 127 #define EXTRA_SECTIONS in_fini
 128
 129 #undef EXTRA_SECTION_FUNCTIONS
 130 #define EXTRA_SECTION_FUNCTIONS                                 \
 131   FINI_SECTION_FUNCTION
 132
 133 #undef CTORS_SECTION_ASM_OP
 134 #define CTORS_SECTION_ASM_OP    "\t.section\t.ctors"
 135 #undef DTORS_SECTION_ASM_OP
 136 #define DTORS_SECTION_ASM_OP    "\t.section\t.dtors"
 137
 138 #undef DO_GLOBAL_CTORS_BODY
 139 #undef DO_GLOBAL_DTORS_BODY
 140
 141 /* LynxOS doesn't have mcount.  */
 142 #undef FUNCTION_PROFILER
 143 #define FUNCTION_PROFILER(file, profile_label_no)