gcc/config/rs6000/lynx.h

   1 /* Definitions for Rs6000 running LynxOS.
   2    Copyright (C) 1995, 1996, 2000, 2002 Free Software Foundation, Inc.
   3    Contributed by David Henkel-Wallace, Cygnus Support (gumby@cygnus.com)
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC 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 GNU CC 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 GNU CC; 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 /* Definitions we want to override with those from rs6000.h: */
  23 #undef LIB_SPEC
  24 #undef PTRDIFF_TYPE
  25 #undef WCHAR_TYPE
  26 #undef WCHAR_TYPE_SIZE
  27 #undef ASM_FILE_START
  28 #undef EXTRA_SECTIONS
  29 #undef READONLY_DATA_SECTION
  30 #undef READONLY_DATA_SECTION_ASM_OP
  31 #undef EXTRA_SECTION_FUNCTIONS
  32 #undef TARGET_ASM_SELECT_RTX_SECTION
  33 #undef TARGET_ASM_SELECT_SECTION
  34 #undef USER_LABEL_PREFIX
  35 #undef ASM_OUTPUT_LABELREF
  36 #undef ASM_GENERATE_INTERNAL_LABEL
  37 #undef ASM_OUTPUT_COMMON
  38 #undef ASM_OUTPUT_LOCAL
  39
  40 #undef SDB_DEBUGGING_INFO
  41 #undef DBX_DEBUGGING_INFO
  42 #undef PREFERRED_DEBUGGING_TYPE
  43
  44 #undef FUNCTION_PROFILER
  45
  46 #include <rs6000/rs6000.h>
  47
  48 /* Print subsidiary information on the compiler version in use.  */
  49 #define TARGET_VERSION fprintf (stderr, " (LynxOS-RS/6000)");
  50
  51 /* LynxOS has signed chars, regardless of what most R/S 6000 systems do */
  52 #undef DEFAULT_SIGNED_CHAR
  53 #define DEFAULT_SIGNED_CHAR 1
  54
  55 #undef TARGET_OS_CPP_BUILTINS
  56 #define TARGET_OS_CPP_BUILTINS()         \
  57   do                                     \
  58     {                                    \
  59       builtin_assert ("cpu=rs6000");     \
  60       builtin_assert ("machine=rs6000"); \
  61       builtin_assert ("system=lynx");    \
  62       builtin_assert ("system=unix");    \
  63       builtin_define_std ("Lynx");       \
  64       builtin_define ("_IBMR2");         \
  65       builtin_define_std ("unix");       \
  66       builtin_define_std ("rs6000");     \
  67       builtin_define_std ("lynx");       \
  68       builtin_define_std ("LYNX");       \
  69     }                                    \
  70   while (0)
  71
  72 #undef LINK_SPEC
  73 #define LINK_SPEC "-T0x10001000 -H0x1000 -D0x20000000 -btextro -bhalt:4 -bnodelcsect -bnso -bro -bnoglink %{v} %{b*}"
  74
  75 #undef LIB_SPEC
  76 #define LIB_SPEC "%{mthreads:-L/lib/thread/}  \
  77   %{msystem-v:-lc_v -lm.v}  \
  78   %{!msystem-v:%{mposix:-lc_p} -lc -lm}"
  79
  80 #undef STARTFILE_SPEC
  81 #define STARTFILE_SPEC "%{p:%{mthreads:thread/pinit.o%s}%{!mthreads:pinit.o%s}}%{!p:%{msystem-v:vinit.o%s -e_start}%{!msystem-v:%{mthreads:thread/init.o%s}%{!mthreads:init.o%s}}}"
  82
  83 #undef ENDFILE_SPEC
  84
  85 /* This can become more refined as we have more powerpc options.  */
  86 #undef ASM_SPEC
  87 #define ASM_SPEC "-u %(asm_cpu)"
  88
  89 #undef SUBTARGET_SWITCHES
  90 #define SUBTARGET_SWITCHES \
  91     {"threads",         MASK_THREADS},          \
  92     {"posix",           MASK_POSIX},            \
  93     {"system-v",        MASK_SYSTEM_V},
  94
  95 #undef SUBTARGET_OVERRIDE_OPTIONS
  96 #define SUBTARGET_OVERRIDE_OPTIONS \
  97 do {                                                            \
  98   if (TARGET_SYSTEM_V && profile_flag)                          \
  99     warning ("-msystem-v and -p are incompatible");             \
 100   if (TARGET_SYSTEM_V && TARGET_THREADS)                        \
 101     warning ("-msystem-v and -mthreads are incompatible");      \
 102 } while (0)
 103
 104 /* For collect2 */
 105 #define OBJECT_FORMAT_NONE
 106 #undef OBJECT_FORMAT_COFF
 107 #undef OBJECT_FORMAT_ROSE
 108 #undef MD_EXEC_PREFIX
 109 #undef REAL_LD_FILE_NAME
 110 #undef REAL_STRIP_FILE_NAME
 111
 112 /* LynxOS doesn't have mcount.  */
 113 #undef FUNCTION_PROFILER
 114 #define FUNCTION_PROFILER(file, profile_label_no)