1 /* IA32 VxWorks target definitions for GNU compiler. 2 Copyright (C) 2003-2016 Free Software Foundation, Inc. 3 Updated by CodeSourcery, LLC. 4 5 This file is part of GCC. 6 7 GCC 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 3, or (at your option) 10 any later version. 11 12 GCC 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 GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #undef ASM_SPEC 22 #define ASM_SPEC "" 23 24 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 25 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 26 27 /* VxWorks uses the same ABI as Solaris 2, so use i386/sol2.h version. */ 28 29 #undef TARGET_SUBTARGET_DEFAULT 30 #define TARGET_SUBTARGET_DEFAULT \ 31 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS) 32 33 /* Provide our target specific DBX_REGISTER_NUMBER. VxWorks relies on 34 the SVR4 numbering. */ 35 36 #undef DBX_REGISTER_NUMBER 37 #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] 38 39 #define TARGET_OS_CPP_BUILTINS() \ 40 do \ 41 { \ 42 VXWORKS_OS_CPP_BUILTINS (); \ 43 if (TARGET_386) \ 44 builtin_define ("CPU=I80386"); \ 45 else if (TARGET_486) \ 46 builtin_define ("CPU=I80486"); \ 47 else if (TARGET_PENTIUM) \ 48 { \ 49 builtin_define ("CPU=PENTIUM"); \ 50 builtin_define ("CPU_VARIANT=PENTIUM"); \ 51 } \ 52 else if (TARGET_PENTIUMPRO) \ 53 { \ 54 builtin_define ("CPU=PENTIUM2"); \ 55 builtin_define ("CPU_VARIANT=PENTIUMPRO"); \ 56 } \ 57 else if (TARGET_PENTIUM4) \ 58 { \ 59 builtin_define ("CPU=PENTIUM4"); \ 60 builtin_define ("CPU_VARIANT=PENTIUM4"); \ 61 } \ 62 } \ 63 while (0) 64 65 #undef CPP_SPEC 66 #define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC 67 #undef LIB_SPEC 68 #define LIB_SPEC VXWORKS_LIB_SPEC 69 #undef STARTFILE_SPEC 70 #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC 71 #undef ENDFILE_SPEC 72 #define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC 73 #undef LINK_SPEC 74 #define LINK_SPEC VXWORKS_LINK_SPEC 75 76 #undef SUBTARGET_SWITCHES 77 #define SUBTARGET_SWITCHES EXTRA_SUBTARGET_SWITCHES 78 79 #undef SUBTARGET_OVERRIDE_OPTIONS 80 #define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS 81 82 /* No _mcount profiling on VxWorks. */ 83 #undef FUNCTION_PROFILER 84 #define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO) 85 86 /* We cannot use PC-relative accesses for VxWorks PIC because there is no 87 fixed gap between segments. */ 88 #undef ASM_PREFERRED_EH_DATA_FORMAT 89 90 #define IX86_MAYBE_NO_LIBGCC_TFMODE 91 92 /* Define this to be nonzero if static stack checking is supported. */ 93 #define STACK_CHECK_STATIC_BUILTIN 1 94 95 /* This platform supports the probing method of stack checking (RTP mode). 96 8K is reserved in the stack to propagate exceptions in case of overflow. */ 97 #define STACK_CHECK_PROTECT 8192 98