gcc/config/vx-common.h

   1 /* Target-independent configuration for VxWorks and VxWorks AE.
   2    Copyright (C) 2005-2017 Free Software Foundation, Inc.
   3    Contributed by CodeSourcery, LLC.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* VxWorks headers are C++-aware.  */
  22 #undef  NO_IMPLICIT_EXTERN_C
  23 #define NO_IMPLICIT_EXTERN_C
  24
  25 /* Most of these will probably be overridden by subsequent headers.  We
  26    undefine them here just in case, and define VXWORKS_ versions of each,
  27    to be used in port-specific vxworks.h.  */
  28 #undef LIB_SPEC
  29 #undef LINK_SPEC
  30 #undef LIBGCC_SPEC
  31 #define LIBGCC_SPEC VXWORKS_LIBGCC_SPEC
  32 #undef STARTFILE_SPEC
  33 #undef ENDFILE_SPEC
  34
  35 /* Most of these macros are overridden in "config/vxworks.h" or
  36    "config/vxworksae.h" and are here merely for documentation
  37    purposes.  */
  38 #define VXWORKS_ADDITIONAL_CPP_SPEC ""
  39 #define VXWORKS_LIB_SPEC ""
  40 #define VXWORKS_LINK_SPEC ""
  41 #define VXWORKS_LIBGCC_SPEC ""
  42 #define VXWORKS_STARTFILE_SPEC ""
  43 #define VXWORKS_ENDFILE_SPEC ""
  44
  45 /* VxWorks cannot have dots in constructor labels, because it uses a
  46    mutant variation of collect2 that generates C code instead of
  47    assembly.  Thus each constructor label must be a legitimate C
  48    symbol.  FIXME: Have VxWorks use real collect2 instead.  */
  49 #undef NO_DOLLAR_IN_LABEL
  50 #define NO_DOT_IN_LABEL
  51
  52 /* VxWorks uses wchar_t == unsigned short (UCS2) on all architectures.  */
  53 #undef WCHAR_TYPE
  54 #define WCHAR_TYPE "short unsigned int"
  55 #undef WCHAR_TYPE_SIZE
  56 #define WCHAR_TYPE_SIZE 16
  57
  58 /* Likewise wint_t.  */
  59 #undef WINT_TYPE
  60 #define WINT_TYPE "short unsigned int"
  61 #undef WINT_TYPE_SIZE
  62 #define WINT_TYPE_SIZE 16
  63
  64 /* Dwarf2 unwind info is supported.  */
  65 #undef DWARF2_UNWIND_INFO
  66 #define DWARF2_UNWIND_INFO 1
  67
  68 /* VxWorks uses DWARF2.  */
  69 #define DWARF2_DEBUGGING_INFO 1
  70 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  71
  72 /* None of these other formats is supported.  */
  73 #undef DWARF_DEBUGGING_INFO
  74 #undef DBX_DEBUGGING_INFO
  75 #undef XCOFF_DEBUGGING_INFO
  76 #undef VMS_DEBUGGING_INFO
  77
  78 /* Kernel mode doesn't have ctors/dtors, but RTP mode does.  */
  79 #define TARGET_HAVE_CTORS_DTORS false
  80 #define VXWORKS_OVERRIDE_OPTIONS /* empty */
  81
  82 /* No math library needed.  */
  83 #define MATH_LIBRARY ""
  84
  85 /* No profiling.  */
  86 #define VXWORKS_FUNCTION_PROFILER(FILE, LABELNO) do     \
  87 {                                                       \
  88   sorry ("profiler support for VxWorks");               \
  89 } while (0)
  90
  91 /* We occasionally need to distinguish between the VxWorks variants.  */
  92 #define VXWORKS_KIND_NORMAL  1
  93 #define VXWORKS_KIND_AE      2