1 /* IA32 VxWorks target definitions for GNU compiler. 2 Copyright (C) 2003-2021 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 /* VxWorks after 7 SR0600 use the ELF ABI and the system environment is llvm 22 based. Earlier versions have GNU based environment components and use the 23 same ABI as Solaris 2. */ 24 25 #if TARGET_VXWORKS7 26 27 #undef VXWORKS_PERSONALITY 28 #define VXWORKS_PERSONALITY "llvm" 29 30 #else 31 32 #undef ASM_OUTPUT_ALIGNED_BSS 33 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 34 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 35 36 #undef TARGET_SUBTARGET_DEFAULT 37 #define TARGET_SUBTARGET_DEFAULT \ 38 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS) 39 40 /* Provide our target specific DBX_REGISTER_NUMBER. VxWorks relies on 41 the SVR4 numbering. */ 42 43 #undef DBX_REGISTER_NUMBER 44 #define DBX_REGISTER_NUMBER(n) \ 45 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) 46 47 #undef PTRDIFF_TYPE 48 #define PTRDIFF_TYPE (TARGET_LP64 ? "long int" : "int") 49 50 #undef SIZE_TYPE 51 #define SIZE_TYPE (TARGET_LP64 ? "long unsigned int" : "unsigned int") 52 53 /* We cannot use PC-relative accesses for VxWorks PIC because there is no 54 fixed gap between segments. */ 55 #undef ASM_PREFERRED_EH_DATA_FORMAT 56 57 #if TARGET_64BIT_DEFAULT 58 #undef VXWORKS_SYSCALL_LIBS_RTP 59 #define VXWORKS_SYSCALL_LIBS_RTP "-lsyscall" 60 #endif 61 62 #endif 63 64 /* CPU macro definitions, ordered to account for VxWorks 7 not 65 supporting CPUs older than PENTIUM4 since SR0650. */ 66 67 #define VX_CPUDEF(CPU) builtin_define(VX_CPU_PREFIX "CPU=" #CPU) 68 #define VX_CPUVDEF(CPU) builtin_define(VX_CPU_PREFIX "CPU_VARIANT=" #CPU) 69 70 #define TARGET_OS_CPP_BUILTINS() \ 71 do \ 72 { \ 73 VXWORKS_OS_CPP_BUILTINS (); \ 74 if (TARGET_64BIT) \ 75 VX_CPUDEF (X86_64); \ 76 else if (TARGET_PENTIUM4) \ 77 { \ 78 VX_CPUDEF (PENTIUM4); \ 79 VX_CPUVDEF (PENTIUM4); \ 80 } \ 81 else if (TARGET_CORE2) \ 82 VX_CPUDEF (CORE2); \ 83 else if (TARGET_NEHALEM) \ 84 VX_CPUDEF (NEHALEM); \ 85 else if (TARGET_SANDYBRIDGE) \ 86 VX_CPUDEF (SANDYBRIDGE); \ 87 else if (TARGET_HASWELL) \ 88 VX_CPUDEF (HASWELL); \ 89 else if (TARGET_SILVERMONT) \ 90 VX_CPUDEF (SILVERMONT); \ 91 else if (TARGET_SKYLAKE || TARGET_SKYLAKE_AVX512) \ 92 VX_CPUDEF (SKYLAKE); \ 93 else if (TARGET_GOLDMONT) \ 94 VX_CPUDEF (GOLDMONT); \ 95 else if (TARGET_VXWORKS7) \ 96 VX_CPUDEF (PENTIUM4); \ 97 else if (TARGET_386) \ 98 VX_CPUDEF (I80386); \ 99 else if (TARGET_486) \ 100 VX_CPUDEF (I80486); \ 101 else if (TARGET_PENTIUM) \ 102 { \ 103 VX_CPUDEF (PENTIUM); \ 104 VX_CPUVDEF (PENTIUM); \ 105 } \ 106 else if (TARGET_PENTIUMPRO) \ 107 { \ 108 VX_CPUDEF (PENTIUM2); \ 109 VX_CPUVDEF (PENTIUMPRO); \ 110 } \ 111 else \ 112 VX_CPUDEF (I80386); \ 113 } \ 114 while (0) 115 116 #undef CPP_SPEC 117 #define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC 118 #undef CC1_SPEC 119 #define CC1_SPEC VXWORKS_CC1_SPEC 120 #undef LIB_SPEC 121 #define LIB_SPEC VXWORKS_LIB_SPEC 122 #undef STARTFILE_SPEC 123 #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC 124 #undef ENDFILE_SPEC 125 #define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC 126 #undef LINK_SPEC 127 #define LINK_SPEC VXWORKS_LINK_SPEC 128 129 #undef SUBTARGET_SWITCHES 130 #define SUBTARGET_SWITCHES EXTRA_SUBTARGET_SWITCHES 131 132 #undef SUBTARGET_OVERRIDE_OPTIONS 133 #define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS 134 135 /* No _mcount profiling on VxWorks. */ 136 #undef FUNCTION_PROFILER 137 #define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO) 138 139 /* Define this to be nonzero if static stack checking is supported. */ 140 #define STACK_CHECK_STATIC_BUILTIN 1 141 142 /* This platform supports the probing method of stack checking (RTP mode). 143 8K is reserved in the stack to propagate exceptions in case of overflow. 144 On 64-bit targets, we double that size. */ 145 146 #define STACK_CHECK_PROTECT (TARGET_64BIT_DEFAULT ? 16 * 1024 : 8 * 1024) 147