1 /* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF. 2 Copyright (C) 1996-2013 Free Software Foundation, Inc. 3 Contributed by David S. Miller (davem@caip.rutgers.edu) 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 #define TARGET_OS_CPP_BUILTINS() \ 22 do \ 23 { \ 24 GNU_USER_TARGET_OS_CPP_BUILTINS(); \ 25 if (TARGET_ARCH64) \ 26 builtin_define ("_LONGLONG"); \ 27 if (TARGET_ARCH32 \ 28 && TARGET_LONG_DOUBLE_128) \ 29 builtin_define ("__LONG_DOUBLE_128__"); \ 30 } \ 31 while (0) 32 33 /* On Linux, the combination sparc64-* --with-cpu=v8 is supported and 34 selects a 32-bit compiler. */ 35 #if defined(TARGET_64BIT_DEFAULT) && TARGET_CPU_DEFAULT >= TARGET_CPU_v9 36 #undef TARGET_DEFAULT 37 #define TARGET_DEFAULT \ 38 (MASK_V9 + MASK_PTR64 + MASK_64BIT + MASK_STACK_BIAS + \ 39 MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128) 40 #endif 41 42 /* This must be v9a not just v9 because by default we enable 43 -mvis. */ 44 #undef ASM_CPU64_DEFAULT_SPEC 45 #define ASM_CPU64_DEFAULT_SPEC "-Av9a" 46 47 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on 48 the GNU/Linux magical crtend.o file (see crtstuff.c) which 49 provides part of the support for getting C++ file-scope static 50 object constructed before entering `main', followed by a normal 51 GNU/Linux "finalizer" file, `crtn.o'. */ 52 53 #undef ENDFILE_SPEC 54 #define ENDFILE_SPEC \ 55 "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s\ 56 %{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" 57 58 /* The default code model. */ 59 #undef SPARC_DEFAULT_CMODEL 60 #define SPARC_DEFAULT_CMODEL CM_MEDLOW 61 62 #undef WCHAR_TYPE 63 #define WCHAR_TYPE "int" 64 65 #undef WCHAR_TYPE_SIZE 66 #define WCHAR_TYPE_SIZE 32 67 68 /* Define for support of TFmode long double. 69 SPARC ABI says that long double is 4 words. */ 70 #undef LONG_DOUBLE_TYPE_SIZE 71 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) 72 73 /* Define this to set long double type size to use in libgcc2.c, which can 74 not depend on target_flags. */ 75 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__) 76 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128 77 #else 78 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 79 #endif 80 81 #undef CPP_SUBTARGET_SPEC 82 #define CPP_SUBTARGET_SPEC "\ 83 %{posix:-D_POSIX_SOURCE} \ 84 %{pthread:-D_REENTRANT} \ 85 " 86 87 /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support 88 for the special GCC options -static and -shared, which allow us to 89 link things in one of these three modes by applying the appropriate 90 combinations of options at link-time. 91 92 When the -shared link option is used a final link is not being 93 done. */ 94 95 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2" 96 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2" 97 98 #ifdef SPARC_BI_ARCH 99 100 #undef SUBTARGET_EXTRA_SPECS 101 #define SUBTARGET_EXTRA_SPECS \ 102 { "link_arch32", LINK_ARCH32_SPEC }, \ 103 { "link_arch64", LINK_ARCH64_SPEC }, \ 104 { "link_arch_default", LINK_ARCH_DEFAULT_SPEC }, \ 105 { "link_arch", LINK_ARCH_SPEC }, 106 107 #define LINK_ARCH32_SPEC "-m elf32_sparc %{shared:-shared} \ 108 %{!shared: \ 109 %{!static: \ 110 %{rdynamic:-export-dynamic} \ 111 -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \ 112 %{static:-static}} \ 113 " 114 115 #define LINK_ARCH64_SPEC "-m elf64_sparc %{shared:-shared} \ 116 %{!shared: \ 117 %{!static: \ 118 %{rdynamic:-export-dynamic} \ 119 -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 120 %{static:-static}} \ 121 " 122 123 #define LINK_ARCH_SPEC "\ 124 %{m32:%(link_arch32)} \ 125 %{m64:%(link_arch64)} \ 126 %{!m32:%{!m64:%(link_arch_default)}} \ 127 " 128 129 #define LINK_ARCH_DEFAULT_SPEC \ 130 (DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC) 131 132 #undef LINK_SPEC 133 #define LINK_SPEC "\ 134 %(link_arch) \ 135 %{!mno-relax:%{!r:-relax}} \ 136 " 137 138 /* -mcpu=native handling only makes sense with compiler running on 139 a SPARC chip. */ 140 #if defined(__sparc__) && defined(__linux__) 141 extern const char *host_detect_local_cpu (int argc, const char **argv); 142 # define EXTRA_SPEC_FUNCTIONS \ 143 { "local_cpu_detect", host_detect_local_cpu }, 144 145 # define MCPU_MTUNE_NATIVE_SPECS \ 146 " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \ 147 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}" 148 #else 149 # define MCPU_MTUNE_NATIVE_SPECS "" 150 #endif 151 152 #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS 153 154 #undef CC1_SPEC 155 #if DEFAULT_ARCH32_P 156 #define CC1_SPEC "%{profile:-p} \ 157 %{m32:%{m64:%emay not use both -m32 and -m64}} \ 158 %{m64:-mptr64 -mstack-bias -mlong-double-128 \ 159 %{!mcpu*:-mcpu=ultrasparc} \ 160 %{!mno-vis:%{!mcpu=v9:-mvis}}} \ 161 " 162 #else 163 #define CC1_SPEC "%{profile:-p} \ 164 %{m32:%{m64:%emay not use both -m32 and -m64}} \ 165 %{m32:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \ 166 %{!mcpu*:-mcpu=cypress}} \ 167 %{mv8plus:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \ 168 %{!mcpu*:-mcpu=v9}} \ 169 %{!m32:%{!mcpu*:-mcpu=ultrasparc}} \ 170 %{!mno-vis:%{!m32:%{!mcpu=v9:-mvis}}} \ 171 " 172 #endif 173 174 /* Support for a compile-time default CPU, et cetera. The rules are: 175 --with-cpu is ignored if -mcpu is specified. 176 --with-tune is ignored if -mtune is specified. 177 --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu 178 are specified. 179 In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)} 180 here, otherwise say -mcpu=v7 would be passed even when -m64. 181 CC1_SPEC above takes care of this instead. */ 182 #undef OPTION_DEFAULT_SPECS 183 #if DEFAULT_ARCH32_P 184 #define OPTION_DEFAULT_SPECS \ 185 {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 186 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ 187 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } 188 #else 189 #define OPTION_DEFAULT_SPECS \ 190 {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 191 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ 192 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } 193 #endif 194 195 #if DEFAULT_ARCH32_P 196 #define MULTILIB_DEFAULTS { "m32" } 197 #else 198 #define MULTILIB_DEFAULTS { "m64" } 199 #endif 200 201 #else /* !SPARC_BI_ARCH */ 202 203 #undef LINK_SPEC 204 #define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ 205 %{!shared: \ 206 %{!static: \ 207 %{rdynamic:-export-dynamic} \ 208 -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 209 %{static:-static}} \ 210 %{!mno-relax:%{!r:-relax}} \ 211 " 212 213 #endif /* !SPARC_BI_ARCH */ 214 215 /* It's safe to pass -s always, even if -g is not used. */ 216 #undef ASM_SPEC 217 #define ASM_SPEC "\ 218 -s \ 219 %{fpic|fPIC|fpie|fPIE:-K PIC} \ 220 %{!.c:%{findirect-dispatch:-K PIC}} \ 221 %(asm_cpu) %(asm_arch) %(asm_relax)" 222 223 #undef ASM_OUTPUT_ALIGNED_LOCAL 224 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ 225 do { \ 226 fputs ("\t.local\t", (FILE)); \ 227 assemble_name ((FILE), (NAME)); \ 228 putc ('\n', (FILE)); \ 229 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ 230 } while (0) 231 232 #undef COMMON_ASM_OP 233 #define COMMON_ASM_OP "\t.common\t" 234 235 #undef LOCAL_LABEL_PREFIX 236 #define LOCAL_LABEL_PREFIX "." 237 238 /* DWARF bits. */ 239 240 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. 241 Obviously the Dwarf2 folks haven't tried to actually build systems 242 with their spec. On a 64-bit system, only 64-bit relocs become 243 RELATIVE relocations. */ 244 245 /* #define DWARF_OFFSET_SIZE PTR_SIZE */ 246 247 #undef DITF_CONVERSION_LIBFUNCS 248 #define DITF_CONVERSION_LIBFUNCS 1 249 250 #ifdef HAVE_AS_TLS 251 #undef TARGET_SUN_TLS 252 #undef TARGET_GNU_TLS 253 #define TARGET_SUN_TLS 0 254 #define TARGET_GNU_TLS 1 255 #endif 256 257 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */ 258 #undef CTORS_SECTION_ASM_OP 259 #undef DTORS_SECTION_ASM_OP 260 261 /* Static stack checking is supported by means of probes. */ 262 #define STACK_CHECK_STATIC_BUILTIN 1 263 264 /* Linux currently uses RMO in uniprocessor mode, which is equivalent to 265 TMO, and TMO in multiprocessor mode. But they reserve the right to 266 change their minds. */ 267 #undef SPARC_RELAXED_ORDERING 268 #define SPARC_RELAXED_ORDERING true 269 270 #undef NEED_INDICATE_EXEC_STACK 271 #define NEED_INDICATE_EXEC_STACK 1 272 273 #ifdef TARGET_LIBC_PROVIDES_SSP 274 /* sparc glibc provides __stack_chk_guard in [%g7 + 0x14], 275 sparc64 glibc provides it at [%g7 + 0x28]. */ 276 #define TARGET_THREAD_SSP_OFFSET (TARGET_ARCH64 ? 0x28 : 0x14) 277 #endif 278 279 /* Define if long doubles should be mangled as 'g'. */ 280 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 281 282 /* We use glibc _mcount for profiling. */ 283 #undef NO_PROFILE_COUNTERS 284 #define NO_PROFILE_COUNTERS 1 285