1 /* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF. 2 Copyright (C) 1996-2016 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 #undef CPP_SUBTARGET_SPEC 74 #define CPP_SUBTARGET_SPEC "\ 75 %{posix:-D_POSIX_SOURCE} \ 76 %{pthread:-D_REENTRANT} \ 77 " 78 79 /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support 80 for the special GCC options -static and -shared, which allow us to 81 link things in one of these three modes by applying the appropriate 82 combinations of options at link-time. 83 84 When the -shared link option is used a final link is not being 85 done. */ 86 87 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2" 88 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2" 89 90 #ifdef SPARC_BI_ARCH 91 92 #undef SUBTARGET_EXTRA_SPECS 93 #define SUBTARGET_EXTRA_SPECS \ 94 { "link_arch32", LINK_ARCH32_SPEC }, \ 95 { "link_arch64", LINK_ARCH64_SPEC }, \ 96 { "link_arch_default", LINK_ARCH_DEFAULT_SPEC }, \ 97 { "link_arch", LINK_ARCH_SPEC }, 98 99 #define LINK_ARCH32_SPEC "-m elf32_sparc %{shared:-shared} \ 100 %{!shared: \ 101 %{!static: \ 102 %{rdynamic:-export-dynamic} \ 103 -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \ 104 %{static:-static}} \ 105 " 106 107 #define LINK_ARCH64_SPEC "-m elf64_sparc %{shared:-shared} \ 108 %{!shared: \ 109 %{!static: \ 110 %{rdynamic:-export-dynamic} \ 111 -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 112 %{static:-static}} \ 113 " 114 115 #define LINK_ARCH_SPEC "\ 116 %{m32:%(link_arch32)} \ 117 %{m64:%(link_arch64)} \ 118 %{!m32:%{!m64:%(link_arch_default)}} \ 119 " 120 121 #define LINK_ARCH_DEFAULT_SPEC \ 122 (DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC) 123 124 #undef LINK_SPEC 125 #define LINK_SPEC "\ 126 %(link_arch) \ 127 %{!mno-relax:%{!r:-relax}} \ 128 " 129 130 /* -mcpu=native handling only makes sense with compiler running on 131 a SPARC chip. */ 132 #if defined(__sparc__) && defined(__linux__) 133 extern const char *host_detect_local_cpu (int argc, const char **argv); 134 # define EXTRA_SPEC_FUNCTIONS \ 135 { "local_cpu_detect", host_detect_local_cpu }, 136 137 # define MCPU_MTUNE_NATIVE_SPECS \ 138 " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \ 139 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}" 140 #else 141 # define MCPU_MTUNE_NATIVE_SPECS "" 142 #endif 143 144 #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS 145 146 #undef CC1_SPEC 147 #if DEFAULT_ARCH32_P 148 #define CC1_SPEC "%{profile:-p} \ 149 %{m32:%{m64:%emay not use both -m32 and -m64}} \ 150 %{m64:-mptr64 -mstack-bias -mlong-double-128 \ 151 %{!mcpu*:-mcpu=ultrasparc} \ 152 %{!mno-vis:%{!mcpu=v9:-mvis}}} \ 153 " 154 #else 155 #define CC1_SPEC "%{profile:-p} \ 156 %{m32:%{m64:%emay not use both -m32 and -m64}} \ 157 %{m32:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \ 158 %{!mcpu*:-mcpu=cypress}} \ 159 %{mv8plus:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \ 160 %{!mcpu*:-mcpu=v9}} \ 161 %{!m32:%{!mcpu*:-mcpu=ultrasparc}} \ 162 %{!mno-vis:%{!m32:%{!mcpu=v9:-mvis}}} \ 163 " 164 #endif 165 166 /* Support for a compile-time default CPU, et cetera. The rules are: 167 --with-cpu is ignored if -mcpu is specified; likewise --with-cpu-32 168 and --with-cpu-64. 169 --with-tune is ignored if -mtune is specified; likewise --with-tune-32 170 and --with-tune-64. 171 --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu 172 are specified. 173 In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)} 174 here, otherwise say -mcpu=v7 would be passed even when -m64. 175 CC1_SPEC above takes care of this instead. 176 177 Note that the order of the cpu* and tune* options matters: the 178 config.gcc file always sets with_cpu to some value, even if the 179 user didn't use --with-cpu when invoking the configure script. 180 This value is based on the target name. Therefore we have to make 181 sure that --with-cpu-32 takes precedence to --with-cpu in < v9 182 systems, and that --with-cpu-64 takes precedence to --with-cpu in 183 >= v9 systems. As for the tune* options, in some platforms 184 config.gcc also sets a default value for it if the user didn't use 185 --with-tune when invoking the configure script. */ 186 #undef OPTION_DEFAULT_SPECS 187 #if DEFAULT_ARCH32_P 188 #define OPTION_DEFAULT_SPECS \ 189 {"cpu_32", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 190 {"cpu_64", "%{m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 191 {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 192 {"tune_32", "%{!m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 193 {"tune_64", "%{m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 194 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ 195 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } 196 #else 197 #define OPTION_DEFAULT_SPECS \ 198 {"cpu_32", "%{m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 199 {"cpu_64", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 200 {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 201 {"tune_32", "%{m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 202 {"tune_64", "%{!m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 203 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ 204 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } 205 #endif 206 207 #if DEFAULT_ARCH32_P 208 #define MULTILIB_DEFAULTS { "m32" } 209 #else 210 #define MULTILIB_DEFAULTS { "m64" } 211 #endif 212 213 #else /* !SPARC_BI_ARCH */ 214 215 #undef LINK_SPEC 216 #define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ 217 %{!shared: \ 218 %{!static: \ 219 %{rdynamic:-export-dynamic} \ 220 -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 221 %{static:-static}} \ 222 %{!mno-relax:%{!r:-relax}} \ 223 " 224 225 #endif /* !SPARC_BI_ARCH */ 226 227 /* It's safe to pass -s always, even if -g is not used. */ 228 #undef ASM_SPEC 229 #define ASM_SPEC "\ 230 -s \ 231 %{" FPIE_OR_FPIC_SPEC ":-K PIC} \ 232 %{!.c:%{findirect-dispatch:-K PIC}} \ 233 %(asm_cpu) %(asm_arch) %(asm_relax)" 234 235 #undef ASM_OUTPUT_ALIGNED_LOCAL 236 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ 237 do { \ 238 fputs ("\t.local\t", (FILE)); \ 239 assemble_name ((FILE), (NAME)); \ 240 putc ('\n', (FILE)); \ 241 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ 242 } while (0) 243 244 #undef COMMON_ASM_OP 245 #define COMMON_ASM_OP "\t.common\t" 246 247 #undef LOCAL_LABEL_PREFIX 248 #define LOCAL_LABEL_PREFIX "." 249 250 /* DWARF bits. */ 251 252 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. 253 Obviously the Dwarf2 folks haven't tried to actually build systems 254 with their spec. On a 64-bit system, only 64-bit relocs become 255 RELATIVE relocations. */ 256 257 /* #define DWARF_OFFSET_SIZE PTR_SIZE */ 258 259 #undef DITF_CONVERSION_LIBFUNCS 260 #define DITF_CONVERSION_LIBFUNCS 1 261 262 #ifdef HAVE_AS_TLS 263 #undef TARGET_SUN_TLS 264 #undef TARGET_GNU_TLS 265 #define TARGET_SUN_TLS 0 266 #define TARGET_GNU_TLS 1 267 #endif 268 269 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */ 270 #undef CTORS_SECTION_ASM_OP 271 #undef DTORS_SECTION_ASM_OP 272 273 /* Static stack checking is supported by means of probes. */ 274 #define STACK_CHECK_STATIC_BUILTIN 1 275 276 #undef NEED_INDICATE_EXEC_STACK 277 #define NEED_INDICATE_EXEC_STACK 1 278 279 #ifdef TARGET_LIBC_PROVIDES_SSP 280 /* sparc glibc provides __stack_chk_guard in [%g7 + 0x14], 281 sparc64 glibc provides it at [%g7 + 0x28]. */ 282 #define TARGET_THREAD_SSP_OFFSET (TARGET_ARCH64 ? 0x28 : 0x14) 283 #endif 284 285 /* Define if long doubles should be mangled as 'g'. */ 286 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 287 288 /* We use glibc _mcount for profiling. */ 289 #undef NO_PROFILE_COUNTERS 290 #define NO_PROFILE_COUNTERS 1 291