1 /* Definitions for MIPS systems using GNU userspace. 2 Copyright (C) 1998-2013 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #undef WCHAR_TYPE 21 #define WCHAR_TYPE "int" 22 23 #undef WCHAR_TYPE_SIZE 24 #define WCHAR_TYPE_SIZE 32 25 26 #undef ASM_DECLARE_OBJECT_NAME 27 #define ASM_DECLARE_OBJECT_NAME mips_declare_object_name 28 29 /* If we don't set MASK_ABICALLS, we can't default to PIC. */ 30 #undef TARGET_DEFAULT 31 #define TARGET_DEFAULT MASK_ABICALLS 32 33 #define TARGET_OS_CPP_BUILTINS() \ 34 do { \ 35 GNU_USER_TARGET_OS_CPP_BUILTINS(); \ 36 /* The GNU C++ standard library requires this. */ \ 37 if (c_dialect_cxx ()) \ 38 builtin_define ("_GNU_SOURCE"); \ 39 } while (0) 40 41 #undef SUBTARGET_CPP_SPEC 42 #define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 43 44 /* A standard GNU/Linux mapping. On most targets, it is included in 45 CC1_SPEC itself by config/linux.h, but mips.h overrides CC1_SPEC 46 and provides this hook instead. */ 47 #undef SUBTARGET_CC1_SPEC 48 #define SUBTARGET_CC1_SPEC GNU_USER_TARGET_CC1_SPEC 49 50 /* -G is incompatible with -KPIC which is the default, so only allow objects 51 in the small data section if the user explicitly asks for it. */ 52 #undef MIPS_DEFAULT_GVALUE 53 #define MIPS_DEFAULT_GVALUE 0 54 55 /* Borrowed from sparc/linux.h */ 56 #undef GNU_USER_TARGET_LINK_SPEC 57 #define GNU_USER_TARGET_LINK_SPEC \ 58 "%(endian_spec) \ 59 %{shared:-shared} \ 60 %{!shared: \ 61 %{!static: \ 62 %{rdynamic:-export-dynamic} \ 63 -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \ 64 %{static:-static}}" 65 #undef LINK_SPEC 66 #define LINK_SPEC GNU_USER_TARGET_LINK_SPEC 67 68 #undef SUBTARGET_ASM_SPEC 69 #define SUBTARGET_ASM_SPEC \ 70 "%{!mno-abicalls:%{mplt:-call_nonpic;:-KPIC}}" 71 72 /* The MIPS assembler has different syntax for .set. We set it to 73 .dummy to trap any errors. */ 74 #undef SET_ASM_OP 75 #define SET_ASM_OP "\t.dummy\t" 76 77 #undef ASM_OUTPUT_DEF 78 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 79 do { \ 80 fputc ( '\t', FILE); \ 81 assemble_name (FILE, LABEL1); \ 82 fputs ( " = ", FILE); \ 83 assemble_name (FILE, LABEL2); \ 84 fputc ( '\n', FILE); \ 85 } while (0) 86 87 /* The glibc _mcount stub will save $v0 for us. Don't mess with saving 88 it, since ASM_OUTPUT_REG_PUSH/ASM_OUTPUT_REG_POP do not work in the 89 presence of $gp-relative calls. */ 90 #undef ASM_OUTPUT_REG_PUSH 91 #undef ASM_OUTPUT_REG_POP 92 93 #undef LIB_SPEC 94 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC 95 96 #ifdef HAVE_AS_NO_SHARED 97 /* Default to -mno-shared for non-PIC. */ 98 # define NO_SHARED_SPECS \ 99 " %{mshared|mno-shared|fpic|fPIC|fpie|fPIE:;:-mno-shared}" 100 #else 101 # define NO_SHARED_SPECS "" 102 #endif 103 104 /* -march=native handling only makes sense with compiler running on 105 a MIPS chip. */ 106 #if defined(__mips__) 107 extern const char *host_detect_local_cpu (int argc, const char **argv); 108 # define EXTRA_SPEC_FUNCTIONS \ 109 { "local_cpu_detect", host_detect_local_cpu }, 110 111 # define MARCH_MTUNE_NATIVE_SPECS \ 112 " %{march=native:%<march=native %:local_cpu_detect(arch)}" \ 113 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}" 114 #else 115 # define MARCH_MTUNE_NATIVE_SPECS "" 116 #endif 117 118 #define LINUX_DRIVER_SELF_SPECS \ 119 NO_SHARED_SPECS \ 120 MARCH_MTUNE_NATIVE_SPECS, \ 121 /* -mplt has no effect without -mno-shared. Simplify later \ 122 specs handling by removing a redundant option. */ \ 123 "%{!mno-shared:%<mplt}", \ 124 /* -mplt likewise has no effect for -mabi=64 without -msym32. */ \ 125 "%{mabi=64:%{!msym32:%<mplt}}" 126 127 #undef DRIVER_SELF_SPECS 128 #define DRIVER_SELF_SPECS \ 129 BASE_DRIVER_SELF_SPECS, \ 130 LINUX_DRIVER_SELF_SPECS 131 132 /* Similar to standard Linux, but adding -ffast-math support. */ 133 #undef GNU_USER_TARGET_MATHFILE_SPEC 134 #define GNU_USER_TARGET_MATHFILE_SPEC \ 135 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" 136 #undef ENDFILE_SPEC 137 #define ENDFILE_SPEC \ 138 GNU_USER_TARGET_MATHFILE_SPEC " " \ 139 GNU_USER_TARGET_ENDFILE_SPEC 140