vx-common.h revision 1.1.1.1
1/* Target-independent configuration for VxWorks and VxWorks AE. 2 Copyright (C) 2005 Free Software Foundation, Inc. 3 Contributed by by CodeSourcery, LLC. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to the Free 19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 2002110-1301, USA. */ 21 22/* VxWorks headers are C++-aware. */ 23#undef NO_IMPLICIT_EXTERN_C 24#define NO_IMPLICIT_EXTERN_C 25 26/* Most of these will probably be overridden by subsequent headers. We 27 undefine them here just in case, and define VXWORKS_ versions of each, 28 to be used in port-specific vxworks.h. */ 29#undef LIB_SPEC 30#undef LINK_SPEC 31#undef LIBGCC_SPEC 32#define LIBGCC_SPEC VXWORKS_LIBGCC_SPEC 33#undef STARTFILE_SPEC 34#undef ENDFILE_SPEC 35 36/* Most of these macros are overridden in "config/vxworks.h" or 37 "config/vxworksae.h" and are here merely for documentation 38 purposes. */ 39#define VXWORKS_ADDITIONAL_CPP_SPEC "" 40#define VXWORKS_LIB_SPEC "" 41#define VXWORKS_LINK_SPEC "" 42#define VXWORKS_LIBGCC_SPEC "" 43#define VXWORKS_STARTFILE_SPEC "" 44#define VXWORKS_ENDFILE_SPEC "" 45 46/* VxWorks cannot have dots in constructor labels, because it uses a 47 mutant variation of collect2 that generates C code instead of 48 assembly. Thus each constructor label must be a legitimate C 49 symbol. FIXME: Have VxWorks use real collect2 instead. */ 50#undef NO_DOLLAR_IN_LABEL 51#define NO_DOT_IN_LABEL 52 53/* VxWorks uses wchar_t == unsigned short (UCS2) on all architectures. */ 54#undef WCHAR_TYPE 55#define WCHAR_TYPE "short unsigned int" 56#undef WCHAR_TYPE_SIZE 57#define WCHAR_TYPE_SIZE 16 58 59/* Dwarf2 unwind info is not supported. */ 60#define DWARF2_UNWIND_INFO 0 61 62/* VxWorks uses DWARF2. */ 63#define DWARF2_DEBUGGING_INFO 1 64#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 65 66/* None of these other formats is supported. */ 67#undef DWARF_DEBUGGING_INFO 68#undef DBX_DEBUGGING_INFO 69#undef SDB_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/* This section either contains dynamic relocations, or contains 87 PC-rel indirections to stubs in the data section which contain dynamic 88 relocations. General dynamic relocations are not processed 89 for shared libraries' text segments, and PC-relative displacements 90 from the text segment to the data segment don't work. So force 91 it to .gcc_except_section, which the linker will place in .data. */ 92 93void vxworks_exception_section (void); 94#undef TARGET_ASM_EXCEPTION_SECTION 95#define TARGET_ASM_EXCEPTION_SECTION default_exception_section 96 97/* We occasionally need to distinguish between the VxWorks variants. */ 98#define VXWORKS_KIND_NORMAL 1 99#define VXWORKS_KIND_AE 2 100