1 /* Definitions for SPARC running Linux-based GNU systems with ELF. 2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006 3 Free Software Foundation, Inc. 4 Contributed by Eddie C. Dost (ecd@skynet.be) 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GCC is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING. If not, write to 20 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. */ 22 23 #define TARGET_OS_CPP_BUILTINS() \ 24 do \ 25 { \ 26 builtin_define_std ("unix"); \ 27 builtin_define_std ("linux"); \ 28 builtin_define ("__gnu_linux__"); \ 29 builtin_assert ("system=linux"); \ 30 builtin_assert ("system=unix"); \ 31 builtin_assert ("system=posix"); \ 32 if (TARGET_LONG_DOUBLE_128) \ 33 builtin_define ("__LONG_DOUBLE_128__"); \ 34 } \ 35 while (0) 36 37 /* Don't assume anything about the header files. */ 38 #define NO_IMPLICIT_EXTERN_C 39 40 #undef MD_EXEC_PREFIX 41 #undef MD_STARTFILE_PREFIX 42 43 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add 44 the GNU/Linux magical crtbegin.o file (see crtstuff.c) which 45 provides part of the support for getting C++ file-scope static 46 object constructed before entering `main'. */ 47 48 #undef STARTFILE_SPEC 49 #if defined HAVE_LD_PIE 50 #define STARTFILE_SPEC \ 51 "%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\ 52 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" 53 #else 54 #define STARTFILE_SPEC \ 55 "%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\ 56 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" 57 #endif 58 59 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on 60 the GNU/Linux magical crtend.o file (see crtstuff.c) which 61 provides part of the support for getting C++ file-scope static 62 object constructed before entering `main', followed by a normal 63 GNU/Linux "finalizer" file, `crtn.o'. */ 64 65 #undef ENDFILE_SPEC 66 #define ENDFILE_SPEC \ 67 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ 68 %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" 69 70 /* This is for -profile to use -lc_p instead of -lc. */ 71 #undef CC1_SPEC 72 #define CC1_SPEC "%{profile:-p} \ 73 %{sun4:} %{target:} \ 74 %{mcypress:-mcpu=cypress} \ 75 %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \ 76 %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \ 77 " 78 79 /* The GNU C++ standard library requires that these macros be defined. */ 80 #undef CPLUSPLUS_CPP_SPEC 81 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" 82 83 #undef TARGET_VERSION 84 #define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)"); 85 86 #undef SIZE_TYPE 87 #define SIZE_TYPE "unsigned int" 88 89 #undef PTRDIFF_TYPE 90 #define PTRDIFF_TYPE "int" 91 92 #undef WCHAR_TYPE 93 #define WCHAR_TYPE "int" 94 95 #undef WCHAR_TYPE_SIZE 96 #define WCHAR_TYPE_SIZE 32 97 98 #undef CPP_SUBTARGET_SPEC 99 #define CPP_SUBTARGET_SPEC \ 100 "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 101 102 #undef LIB_SPEC 103 #define LIB_SPEC \ 104 "%{pthread:-lpthread} \ 105 %{shared:-lc} \ 106 %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}" 107 108 /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support 109 for the special GCC options -static and -shared, which allow us to 110 link things in one of these three modes by applying the appropriate 111 combinations of options at link-time. We like to support here for 112 as many of the other GNU linker options as possible. But I don't 113 have the time to search for those flags. I am sure how to add 114 support for -soname shared_object_name. H.J. 115 116 I took out %{v:%{!V:-V}}. It is too much :-(. They can use 117 -Wl,-V. 118 119 When the -shared link option is used a final link is not being 120 done. */ 121 122 /* If ELF is the default format, we should not use /lib/elf. */ 123 124 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" 125 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0" 126 #if UCLIBC_DEFAULT 127 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}" 128 #else 129 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}" 130 #endif 131 #define LINUX_DYNAMIC_LINKER \ 132 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER) 133 134 135 #undef LINK_SPEC 136 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \ 137 %{!mno-relax:%{!r:-relax}} \ 138 %{!shared: \ 139 %{!ibcs: \ 140 %{!static: \ 141 %{rdynamic:-export-dynamic} \ 142 %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \ 143 %{static:-static}}}" 144 145 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas). 146 It's safe to pass -s always, even if -g is not used. */ 147 #undef ASM_SPEC 148 #define ASM_SPEC \ 149 "%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \ 150 %{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu) %(asm_relax)" 151 152 /* Same as sparc.h */ 153 #undef DBX_REGISTER_NUMBER 154 #define DBX_REGISTER_NUMBER(REGNO) (REGNO) 155 156 #undef ASM_OUTPUT_ALIGNED_LOCAL 157 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ 158 do { \ 159 fputs ("\t.local\t", (FILE)); \ 160 assemble_name ((FILE), (NAME)); \ 161 putc ('\n', (FILE)); \ 162 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ 163 } while (0) 164 165 #undef COMMON_ASM_OP 166 #define COMMON_ASM_OP "\t.common\t" 167 168 #undef LOCAL_LABEL_PREFIX 169 #define LOCAL_LABEL_PREFIX "." 170 171 /* This is how to store into the string LABEL 172 the symbol_ref name of an internal numbered label where 173 PREFIX is the class of label and NUM is the number within the class. 174 This is suitable for output with `assemble_name'. */ 175 176 #undef ASM_GENERATE_INTERNAL_LABEL 177 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ 178 sprintf (LABEL, "*.L%s%ld", PREFIX, (long)(NUM)) 179 180 181 /* Define for support of TFmode long double. 182 SPARC ABI says that long double is 4 words. */ 183 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) 184 185 /* Define this to set long double type size to use in libgcc2.c, which can 186 not depend on target_flags. */ 187 #ifdef __LONG_DOUBLE_128__ 188 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128 189 #else 190 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 191 #endif 192 193 #undef DITF_CONVERSION_LIBFUNCS 194 #define DITF_CONVERSION_LIBFUNCS 1 195 196 #if defined(HAVE_LD_EH_FRAME_HDR) 197 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} " 198 #endif 199 200 #ifdef HAVE_AS_TLS 201 #undef TARGET_SUN_TLS 202 #undef TARGET_GNU_TLS 203 #define TARGET_SUN_TLS 0 204 #define TARGET_GNU_TLS 1 205 #endif 206 207 /* Don't be different from other Linux platforms in this regard. */ 208 #define HANDLE_PRAGMA_PACK_PUSH_POP 209 210 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */ 211 #undef CTORS_SECTION_ASM_OP 212 #undef DTORS_SECTION_ASM_OP 213 214 /* Determine whether the entire c99 runtime is present in the 215 runtime library. */ 216 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC) 217 218 #define TARGET_POSIX_IO 219 220 #undef LINK_GCC_C_SEQUENCE_SPEC 221 #define LINK_GCC_C_SEQUENCE_SPEC \ 222 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" 223 224 /* Use --as-needed -lgcc_s for eh support. */ 225 #ifdef HAVE_LD_AS_NEEDED 226 #define USE_LD_AS_NEEDED 1 227 #endif 228 229 #define MD_UNWIND_SUPPORT "config/sparc/linux-unwind.h" 230 231 /* Linux currently uses RMO in uniprocessor mode, which is equivalent to 232 TMO, and TMO in multiprocessor mode. But they reserve the right to 233 change their minds. */ 234 #undef SPARC_RELAXED_ORDERING 235 #define SPARC_RELAXED_ORDERING true 236 237 #undef NEED_INDICATE_EXEC_STACK 238 #define NEED_INDICATE_EXEC_STACK 1 239 240 #ifdef TARGET_LIBC_PROVIDES_SSP 241 /* sparc glibc provides __stack_chk_guard in [%g7 + 0x14]. */ 242 #define TARGET_THREAD_SSP_OFFSET 0x14 243 #endif 244 245 /* Define if long doubles should be mangled as 'g'. */ 246 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 247