1 /* IA32 VxWorks target definitions for GNU compiler. 2 Copyright (C) 2003-2020 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_OUTPUT_ALIGNED_BSS 22 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 23 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 24 25 /* VxWorks uses the same ABI as Solaris 2, so use i386/sol2.h version. */ 26 27 #undef TARGET_SUBTARGET_DEFAULT 28 #define TARGET_SUBTARGET_DEFAULT \ 29 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS) 30 31 /* Provide our target specific DBX_REGISTER_NUMBER. VxWorks relies on 32 the SVR4 numbering. */ 33 34 #undef DBX_REGISTER_NUMBER 35 #define DBX_REGISTER_NUMBER(n) \ 36 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) 37 38 #undef PTRDIFF_TYPE 39 #define PTRDIFF_TYPE (TARGET_LP64 ? "long int" : "int") 40 41 #undef SIZE_TYPE 42 #define SIZE_TYPE (TARGET_LP64 ? "long unsigned int" : "unsigned int") 43 44 #if TARGET_64BIT_DEFAULT 45 #undef VXWORKS_SYSCALL_LIBS_RTP 46 #define VXWORKS_SYSCALL_LIBS_RTP "-lsyscall" 47 #endif 48 49 #define TARGET_OS_CPP_BUILTINS() \ 50 do \ 51 { \ 52 VXWORKS_OS_CPP_BUILTINS (); \ 53 if (TARGET_386) \ 54 builtin_define ("CPU=I80386"); \ 55 else if (TARGET_486) \ 56 builtin_define ("CPU=I80486"); \ 57 else if (TARGET_PENTIUM) \ 58 { \ 59 builtin_define ("CPU=PENTIUM"); \ 60 builtin_define ("CPU_VARIANT=PENTIUM"); \ 61 } \ 62 else if (TARGET_PENTIUMPRO) \ 63 { \ 64 builtin_define ("CPU=PENTIUM2"); \ 65 builtin_define ("CPU_VARIANT=PENTIUMPRO"); \ 66 } \ 67 else if (TARGET_PENTIUM4) \ 68 { \ 69 builtin_define ("CPU=PENTIUM4"); \ 70 builtin_define ("CPU_VARIANT=PENTIUM4"); \ 71 } \ 72 else if (TARGET_64BIT) \ 73 builtin_define ("CPU=X86_64"); \ 74 else \ 75 builtin_define ("CPU=I80386"); \ 76 } \ 77 while (0) 78 79 #undef CPP_SPEC 80 #define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC 81 #undef LIB_SPEC 82 #define LIB_SPEC VXWORKS_LIB_SPEC 83 #undef STARTFILE_SPEC 84 #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC 85 #undef ENDFILE_SPEC 86 #define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC 87 #undef LINK_SPEC 88 #define LINK_SPEC VXWORKS_LINK_SPEC 89 90 #undef SUBTARGET_SWITCHES 91 #define SUBTARGET_SWITCHES EXTRA_SUBTARGET_SWITCHES 92 93 #undef SUBTARGET_OVERRIDE_OPTIONS 94 #define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS 95 96 /* No _mcount profiling on VxWorks. */ 97 #undef FUNCTION_PROFILER 98 #define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO) 99 100 /* We cannot use PC-relative accesses for VxWorks PIC because there is no 101 fixed gap between segments. */ 102 #undef ASM_PREFERRED_EH_DATA_FORMAT 103 104 /* Define this to be nonzero if static stack checking is supported. */ 105 #define STACK_CHECK_STATIC_BUILTIN 1 106 107 /* This platform supports the probing method of stack checking (RTP mode). 108 8K is reserved in the stack to propagate exceptions in case of overflow. 109 On 64-bit targets, we double that size. */ 110 #if TARGET_64BIT_DEFAULT 111 #define STACK_CHECK_PROTECT 16384 112 #else 113 #define STACK_CHECK_PROTECT 8192 114 #endif 115