gcc/config/lynx.h

   1 /* Target independent definitions for LynxOS.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* LynxOS is a multi-platform Unix, similar to SVR3, but not identical.
  22    We can get quite a bit from generic svr3, but have to do some overrides. */
  23
  24 #include "svr3.h"
  25
  26 /* Define various macros, depending on the combination of flags. */
  27
  28 #undef CPP_SPEC
  29 #define CPP_SPEC "%{mthreads:-D_MULTITHREADED}  \
  30   %{mposix:-D_POSIX_SOURCE}  \
  31   %{msystem-v:-I/usr/include_v}"
  32
  33 /* No asm spec needed, since using GNU assembler always. */
  34
  35 /* No linker spec needed, since using GNU linker always. */
  36
  37 #undef LIB_SPEC
  38 #define LIB_SPEC "%{mthreads:-L/lib/thread/}  \
  39   %{msystem-v:-lc_v}  \
  40   %{!msystem-v:%{mposix:-lc_p} -lc -lm}"
  41
  42 /* Set the appropriate names for the Lynx startfiles. */
  43
  44 #undef STARTFILE_SPEC
  45 #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}}}"
  46
  47 #undef ENDFILE_SPEC
  48 #define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
  49
  50 /* Override the svr3 versions. */
  51
  52 #undef WCHAR_TYPE
  53 #define WCHAR_TYPE "int"
  54
  55 #undef PTRDIFF_TYPE
  56 #define PTRDIFF_TYPE "long int"
  57
  58 /* We want to output DBX (stabs) debugging information normally.  */
  59
  60 #define DBX_DEBUGGING_INFO
  61 #undef PREFERRED_DEBUGGING_TYPE
  62 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  63
  64 /* It is convenient to be able to generate standard coff debugging
  65    if requested via -gcoff. */
  66
  67 #define SDB_DEBUGGING_INFO
  68
  69 /* Be function-relative for block and source line stab directives. */
  70
  71 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
  72
  73 /* but, to make this work, functions must appear prior to line info */
  74
  75 #define DBX_FUNCTION_FIRST
  76
  77 /* Generate a blank trailing N_SO to mark the end of the .o file, since
  78    we can't depend upon the linker to mark .o file boundaries with
  79    embedded stabs.  */
  80
  81 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
  82   fprintf (FILE,                                                        \
  83            "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
  84
  85 #undef  ASM_OUTPUT_SOURCE_LINE
  86 #define ASM_OUTPUT_SOURCE_LINE(file, line)              \
  87   { static int sym_lineno = 1;                          \
  88     fprintf (file, ".stabn 68,0,%d,.LM%d-",             \
  89              line, sym_lineno);                         \
  90     assemble_name (file,                                \
  91                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
  92     fprintf (file, "\n.LM%d:\n", sym_lineno);           \
  93     sym_lineno += 1; }
  94
  95 /* Handle #pragma pack and sometimes #pragma weak.  */
  96
  97 #define HANDLE_SYSV_PRAGMA
  98
  99 /* Some additional command-line options. */
 100
 101 #define TARGET_THREADS  (target_flags & MASK_THREADS)
 102 #define MASK_THREADS    0x40000000
 103
 104 #define TARGET_POSIX    (target_flags & MASK_POSIX)
 105 #define MASK_POSIX      0x20000000
 106
 107 #define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
 108 #define MASK_SYSTEM_V   0x10000000
 109
 110 #undef SUBTARGET_SWITCHES
 111 #define SUBTARGET_SWITCHES \
 112     {"threads",         MASK_THREADS},          \
 113     {"posix",           MASK_POSIX},            \
 114     {"system-v",        MASK_SYSTEM_V},
 115
 116 #undef SUBTARGET_OVERRIDE_OPTIONS
 117 #define SUBTARGET_OVERRIDE_OPTIONS \
 118 do {                                                            \
 119   if (TARGET_SYSTEM_V && profile_flag)                          \
 120     warning ("-msystem-v and -p are incompatible");             \
 121   if (TARGET_SYSTEM_V && TARGET_THREADS)                        \
 122     warning ("-msystem-v and -mthreads are incompatible");      \
 123 } while (0)
 124
 125 /* Since init.o et al put all sorts of stuff into the init section,
 126    we can't use the standard init section support in crtbegin.o. */
 127
 128 #undef INIT_SECTION_ASM_OP
 129
 130 #undef EXTRA_SECTIONS
 131 #define EXTRA_SECTIONS in_const, in_fini
 132
 133 #undef EXTRA_SECTION_FUNCTIONS
 134 #define EXTRA_SECTION_FUNCTIONS                                 \
 135   CONST_SECTION_FUNCTION                                        \
 136   FINI_SECTION_FUNCTION
 137
 138 #undef CTORS_SECTION_ASM_OP
 139 #define CTORS_SECTION_ASM_OP    "\t.section\t.ctors"
 140 #undef DTORS_SECTION_ASM_OP
 141 #define DTORS_SECTION_ASM_OP    "\t.section\t.dtors"
 142
 143 #undef DO_GLOBAL_CTORS_BODY
 144 #undef DO_GLOBAL_DTORS_BODY
 145
 146 /* LynxOS doesn't have mcount. */
 147 #undef FUNCTION_PROFILER
 148 #define FUNCTION_PROFILER(file, profile_label_no)