1 /* Target-independent configuration for VxWorks and VxWorks AE. 2 Copyright (C) 2005-2020 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 /* ------------------------- Common SPEC strings ------------------------- */ 22 23 /* Most of these will probably be overridden by subsequent headers. We 24 undefine them here just in case, and define VXWORKS_ versions of each, 25 to be used in port-specific vxworks.h. */ 26 #undef LIB_SPEC 27 #undef LINK_SPEC 28 #undef LIBGCC_SPEC 29 #define LIBGCC_SPEC VXWORKS_LIBGCC_SPEC 30 #undef STARTFILE_SPEC 31 #undef ENDFILE_SPEC 32 33 /* Most of these macros are overridden in "config/vxworks.h" or 34 "config/vxworksae.h" and are here merely for documentation 35 purposes. */ 36 #define VXWORKS_ADDITIONAL_CPP_SPEC "" 37 #define VXWORKS_LIB_SPEC "" 38 #define VXWORKS_LINK_SPEC "" 39 #define VXWORKS_LIBGCC_SPEC "" 40 #define VXWORKS_STARTFILE_SPEC "" 41 #define VXWORKS_ENDFILE_SPEC "" 42 #define VXWORKS_CC1_SPEC "" 43 44 /* ----------------------- Common type descriptions ----------------------- */ 45 46 /* Regardless of the target architecture, VxWorks uses a signed 32bit 47 integer for wchar_t starting with vx7 SR06xx. An unsigned short 48 otherwise. */ 49 #if TARGET_VXWORKS7 50 51 #undef WCHAR_TYPE_SIZE 52 #define WCHAR_TYPE_SIZE 32 53 #undef WCHAR_TYPE 54 #define WCHAR_TYPE (TARGET_VXWORKS64 ? "int" : "long int") 55 56 #else 57 58 #undef WCHAR_TYPE_SIZE 59 #define WCHAR_TYPE_SIZE 16 60 #undef WCHAR_TYPE 61 #define WCHAR_TYPE "short unsigned int" 62 63 #endif 64 65 /* The VxWorks headers base wint_t on the definitions used for wchar_t. 66 Do the same here to make sure they remain in sync, in case WCHAR_TYPE 67 gets redefined for a specific CPU architecture. */ 68 #undef WINT_TYPE_SIZE 69 #define WINT_TYPE_SIZE WCHAR_TYPE_SIZE 70 #undef WINT_TYPE 71 #define WINT_TYPE WCHAR_TYPE 72 73 /* ---------------------- Debug and unwind info formats ------------------ */ 74 75 /* Dwarf2 unwind info is supported, unless overriden by a request for a target 76 specific format. 77 78 Taking care of this here allows using DWARF2_UNWIND_INFO in #if conditions 79 from the common config/vxworks.h files, included before the cpu 80 specializations. Unlike with conditions used in C expressions, where the 81 definitions which matter are those at the expression expansion point, use 82 in #if constructs requires an accurate definition of the operands at the 83 #if point. Since <cpu>/vxworks.h. is typically included after 84 config/vxworks.h, #if expressions in the latter can't rely on possible 85 redefinitions in the former. */ 86 #if !ARM_UNWIND_INFO 87 #undef DWARF2_UNWIND_INFO 88 #define DWARF2_UNWIND_INFO 1 89 #endif 90 91 /* VxWorks uses DWARF2 debugging info. */ 92 #define DWARF2_DEBUGGING_INFO 1 93 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 94 95 /* None of these other formats is supported. */ 96 #undef DBX_DEBUGGING_INFO 97 #undef XCOFF_DEBUGGING_INFO 98 #undef VMS_DEBUGGING_INFO 99 100 /* ------------------------ Misc configuration bits ---------------------- */ 101 102 #ifndef TARGET_VXWORKS7 103 /* VxWorks, prior to version 7, could not have dots in constructor 104 labels, because it used a mutant variation of collect2 that 105 generates C code instead of assembly. Thus each constructor label 106 had to be a legitimate C symbol. */ 107 # undef NO_DOLLAR_IN_LABEL 108 # define NO_DOT_IN_LABEL 109 #endif 110 111 /* Kernel mode doesn't have ctors/dtors, but RTP mode does. */ 112 #define TARGET_HAVE_CTORS_DTORS false 113 #define VXWORKS_OVERRIDE_OPTIONS /* empty */ 114 115 /* No math library needed. */ 116 #define MATH_LIBRARY "" 117 118 /* No profiling. */ 119 #define VXWORKS_FUNCTION_PROFILER(FILE, LABELNO) do \ 120 { \ 121 sorry ("profiler support for VxWorks"); \ 122 } while (0) 123 124 /* We occasionally need to distinguish between the VxWorks variants. */ 125 #define VXWORKS_KIND_NORMAL 1 126 #define VXWORKS_KIND_AE 2 127