gcc/config/vx-common.h

   1 /* Target-independent configuration for VxWorks and VxWorks AE.
   2    Copyright (C) 2005-2018 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 /* Most of these will probably be overridden by subsequent headers.  We
  22    undefine them here just in case, and define VXWORKS_ versions of each,
  23    to be used in port-specific vxworks.h.  */
  24 #undef LIB_SPEC
  25 #undef LINK_SPEC
  26 #undef LIBGCC_SPEC
  27 #define LIBGCC_SPEC VXWORKS_LIBGCC_SPEC
  28 #undef STARTFILE_SPEC
  29 #undef ENDFILE_SPEC
  30
  31 /* Most of these macros are overridden in "config/vxworks.h" or
  32    "config/vxworksae.h" and are here merely for documentation
  33    purposes.  */
  34 #define VXWORKS_ADDITIONAL_CPP_SPEC ""
  35 #define VXWORKS_LIB_SPEC ""
  36 #define VXWORKS_LINK_SPEC ""
  37 #define VXWORKS_LIBGCC_SPEC ""
  38 #define VXWORKS_STARTFILE_SPEC ""
  39 #define VXWORKS_ENDFILE_SPEC ""
  40
  41 /* VxWorks cannot have dots in constructor labels, because it uses a
  42    mutant variation of collect2 that generates C code instead of
  43    assembly.  Thus each constructor label must be a legitimate C
  44    symbol.  FIXME: Have VxWorks use real collect2 instead.  */
  45 #undef NO_DOLLAR_IN_LABEL
  46 #define NO_DOT_IN_LABEL
  47
  48 /* VxWorks uses wchar_t == unsigned short (UCS2) on all architectures.  */
  49 #undef WCHAR_TYPE
  50 #define WCHAR_TYPE "short unsigned int"
  51 #undef WCHAR_TYPE_SIZE
  52 #define WCHAR_TYPE_SIZE 16
  53
  54 /* Likewise wint_t.  */
  55 #undef WINT_TYPE
  56 #define WINT_TYPE "short unsigned int"
  57 #undef WINT_TYPE_SIZE
  58 #define WINT_TYPE_SIZE 16
  59
  60 /* Dwarf2 unwind info is supported.  */
  61 #undef DWARF2_UNWIND_INFO
  62 #define DWARF2_UNWIND_INFO 1
  63
  64 /* VxWorks uses DWARF2.  */
  65 #define DWARF2_DEBUGGING_INFO 1
  66 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  67
  68 /* None of these other formats is supported.  */
  69 #undef DBX_DEBUGGING_INFO
  70 #undef XCOFF_DEBUGGING_INFO
  71 #undef VMS_DEBUGGING_INFO
  72
  73 /* Kernel mode doesn't have ctors/dtors, but RTP mode does.  */
  74 #define TARGET_HAVE_CTORS_DTORS false
  75 #define VXWORKS_OVERRIDE_OPTIONS /* empty */
  76
  77 /* No math library needed.  */
  78 #define MATH_LIBRARY ""
  79
  80 /* No profiling.  */
  81 #define VXWORKS_FUNCTION_PROFILER(FILE, LABELNO) do     \
  82 {                                                       \
  83   sorry ("profiler support for VxWorks");               \
  84 } while (0)
  85
  86 /* We occasionally need to distinguish between the VxWorks variants.  */
  87 #define VXWORKS_KIND_NORMAL  1
  88 #define VXWORKS_KIND_AE      2
  89
  90 /*
  91  * libitm is not supported on VxWorks. Rather than providing stub
  92  * no-op _ITM_registerTMCloneTable/_ITM_deregisterTMCloneTable
  93  * functions, simply prevent crtstuff from even referring to those.
  94  */
  95 #define USE_TM_CLONE_REGISTRY 0