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
   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    We can get quite a bit from generic svr3, but have to do some overrides.  */
  24
  25 #include "svr3.h"
  26
  27 /* Define various macros, depending on the combination of flags.  */
  28
  29 #undef CPP_SPEC
  30 #define CPP_SPEC "%{mthreads:-D_MULTITHREADED}  \
  31   %{mposix:-D_POSIX_SOURCE}  \
  32   %{msystem-v:-I/usr/include_v}"
  33
  34 /* No asm spec needed, since using GNU assembler always.  */
  35
  36 /* No linker spec needed, since using GNU linker always.  */
  37
  38 #undef LIB_SPEC
  39 #define LIB_SPEC "%{mthreads:-L/lib/thread/}  \
  40   %{msystem-v:-lc_v}  \
  41   %{!msystem-v:%{mposix:-lc_p} -lc -lm}"
  42
  43 /* Set the appropriate names for the Lynx startfiles.  */
  44
  45 #undef STARTFILE_SPEC
  46 #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}}}"
  47
  48 #undef ENDFILE_SPEC
  49 #define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
  50
  51 /* Override the svr3 versions.  */
  52
  53 #undef WCHAR_TYPE
  54 #define WCHAR_TYPE "int"
  55
  56 #undef PTRDIFF_TYPE
  57 #define PTRDIFF_TYPE "long int"
  58
  59 /* We want to output DBX (stabs) debugging information normally.  */
  60
  61 #define DBX_DEBUGGING_INFO 1
  62 #undef PREFERRED_DEBUGGING_TYPE
  63 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  64
  65 /* It is convenient to be able to generate standard coff debugging
  66    if requested via -gcoff.  */
  67
  68 #define SDB_DEBUGGING_INFO 1
  69
  70 /* Be function-relative for block and source line stab directives.  */
  71
  72 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
  73
  74 /* but, to make this work, functions must appear prior to line info */
  75
  76 #define DBX_FUNCTION_FIRST
  77
  78 /* Generate a blank trailing N_SO to mark the end of the .o file, since
  79    we can't depend upon the linker to mark .o file boundaries with
  80    embedded stabs.  */
  81
  82 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
  83   fprintf (FILE,                                                        \
  84            "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
  85
  86 #undef  ASM_OUTPUT_SOURCE_LINE
  87 #define ASM_OUTPUT_SOURCE_LINE(file, line, counter)     \
  88   { fprintf (file, ".stabn 68,0,%d,.LM%d-",             \
  89              line, counter);                            \
  90     assemble_name (file,                                \
  91                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
  92     fprintf (file, "\n.LM%d:\n", counter); }
  93
  94 /* Handle #pragma pack and sometimes #pragma weak.  */
  95
  96 #define HANDLE_SYSV_PRAGMA 1
  97
  98 /* Some additional command-line options.  */
  99
 100 #define TARGET_THREADS  (target_flags & MASK_THREADS)
 101 #define MASK_THREADS    0x40000000
 102
 103 #define TARGET_POSIX    (target_flags & MASK_POSIX)
 104 #define MASK_POSIX      0x20000000
 105
 106 #define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
 107 #define MASK_SYSTEM_V   0x10000000
 108
 109 #undef SUBTARGET_SWITCHES
 110 #define SUBTARGET_SWITCHES \
 111     {"threads",         MASK_THREADS},          \
 112     {"posix",           MASK_POSIX},            \
 113     {"system-v",        MASK_SYSTEM_V},
 114
 115 #undef SUBTARGET_OVERRIDE_OPTIONS
 116 #define SUBTARGET_OVERRIDE_OPTIONS \
 117 do {                                                            \
 118   if (TARGET_SYSTEM_V && profile_flag)                          \
 119     warning ("-msystem-v and -p are incompatible");             \
 120   if (TARGET_SYSTEM_V && TARGET_THREADS)                        \
 121     warning ("-msystem-v and -mthreads are incompatible");      \
 122 } while (0)
 123
 124 /* Since init.o et al put all sorts of stuff into the init section,
 125    we can't use the standard init section support in crtbegin.o.  */
 126
 127 #undef INIT_SECTION_ASM_OP
 128
 129 #undef EXTRA_SECTIONS
 130 #define EXTRA_SECTIONS in_fini
 131
 132 #undef EXTRA_SECTION_FUNCTIONS
 133 #define EXTRA_SECTION_FUNCTIONS                                 \
 134   FINI_SECTION_FUNCTION
 135
 136 #undef CTORS_SECTION_ASM_OP
 137 #define CTORS_SECTION_ASM_OP    "\t.section\t.ctors"
 138 #undef DTORS_SECTION_ASM_OP
 139 #define DTORS_SECTION_ASM_OP    "\t.section\t.dtors"
 140
 141 #undef DO_GLOBAL_CTORS_BODY
 142 #undef DO_GLOBAL_DTORS_BODY
 143
 144 /* LynxOS doesn't have mcount.  */
 145 #undef FUNCTION_PROFILER
 146 #define FUNCTION_PROFILER(file, profile_label_no)