1 /* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF. 2 Copyright (C) 1996-2020 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 #undef ENDFILE_SPEC 48 #define ENDFILE_SPEC \ 49 GNU_USER_TARGET_ENDFILE_SPEC \ 50 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" 51 52 /* The default code model. */ 53 #undef SPARC_DEFAULT_CMODEL 54 #define SPARC_DEFAULT_CMODEL CM_MEDLOW 55 56 #undef WCHAR_TYPE 57 #define WCHAR_TYPE "int" 58 59 #undef WCHAR_TYPE_SIZE 60 #define WCHAR_TYPE_SIZE 32 61 62 /* Define for support of TFmode long double. 63 SPARC ABI says that long double is 4 words. */ 64 #undef LONG_DOUBLE_TYPE_SIZE 65 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) 66 67 #undef CPP_SUBTARGET_SPEC 68 #define CPP_SUBTARGET_SPEC "\ 69 %{posix:-D_POSIX_SOURCE} \ 70 %{pthread:-D_REENTRANT} \ 71 " 72 73 /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support 74 for the special GCC options -static and -shared, which allow us to 75 link things in one of these three modes by applying the appropriate 76 combinations of options at link-time. 77 78 When the -shared link option is used a final link is not being 79 done. */ 80 81 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2" 82 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2" 83 84 #ifdef SPARC_BI_ARCH 85 86 #undef SUBTARGET_EXTRA_SPECS 87 #define SUBTARGET_EXTRA_SPECS \ 88 { "link_arch32", LINK_ARCH32_SPEC }, \ 89 { "link_arch64", LINK_ARCH64_SPEC }, \ 90 { "link_arch_default", LINK_ARCH_DEFAULT_SPEC }, \ 91 { "link_arch", LINK_ARCH_SPEC }, 92 93 #define LINK_ARCH32_SPEC "-m elf32_sparc %{shared:-shared} \ 94 %{!shared: \ 95 %{!static: \ 96 %{rdynamic:-export-dynamic} \ 97 -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \ 98 %{static:-static}} \ 99 " 100 101 #define LINK_ARCH64_SPEC "-m elf64_sparc %{shared:-shared} \ 102 %{!shared: \ 103 %{!static: \ 104 %{rdynamic:-export-dynamic} \ 105 -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 106 %{static:-static}} \ 107 " 108 109 #define LINK_ARCH_SPEC "\ 110 %{m32:%(link_arch32)} \ 111 %{m64:%(link_arch64)} \ 112 %{!m32:%{!m64:%(link_arch_default)}} \ 113 " 114 115 #define LINK_ARCH_DEFAULT_SPEC \ 116 (DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC) 117 118 #undef LINK_SPEC 119 #define LINK_SPEC "\ 120 %(link_arch) \ 121 %{!mno-relax:%{!r:-relax}} \ 122 " 123 124 /* -mcpu=native handling only makes sense with compiler running on 125 a SPARC chip. */ 126 #if defined(__sparc__) && defined(__linux__) 127 extern const char *host_detect_local_cpu (int argc, const char **argv); 128 # define EXTRA_SPEC_FUNCTIONS \ 129 { "local_cpu_detect", host_detect_local_cpu }, 130 131 # define MCPU_MTUNE_NATIVE_SPECS \ 132 " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \ 133 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}" 134 #else 135 # define MCPU_MTUNE_NATIVE_SPECS "" 136 #endif 137 138 #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS 139 140 /* -fsanitize=address is currently only supported for 32-bit. */ 141 #define ASAN_REJECT_SPEC \ 142 "%{!%:sanitize(thread):%e-fsanitize=address is not supported in this configuration}" 143 144 #undef ASAN_CC1_SPEC 145 #if DEFAULT_ARCH32_P 146 #define ASAN_CC1_SPEC \ 147 "%{%:sanitize(address):-funwind-tables %{m64:" ASAN_REJECT_SPEC "}}" 148 #else 149 #define ASAN_CC1_SPEC \ 150 "%{%:sanitize(address):-funwind-tables %{!m32:" ASAN_REJECT_SPEC "}}" 151 #endif 152 153 #undef CC1_SPEC 154 #if DEFAULT_ARCH32_P 155 #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC ASAN_CC1_SPEC \ 156 "%{m32:%{m64:%emay not use both -m32 and -m64}} \ 157 %{m64:-mptr64 -mstack-bias -mlong-double-128 \ 158 %{!mcpu*:-mcpu=ultrasparc} \ 159 %{!mno-vis:%{!mcpu=v9:-mvis}}}" 160 #else 161 #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC ASAN_CC1_SPEC \ 162 "%{m32:%{m64:%emay not use both -m32 and -m64}} \ 163 %{m32:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \ 164 %{!mcpu*:-mcpu=cypress}} \ 165 %{mv8plus:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \ 166 %{!mcpu*:-mcpu=v9}} \ 167 %{!m32:%{!mcpu*:-mcpu=ultrasparc}} \ 168 %{!mno-vis:%{!m32:%{!mcpu=v9:-mvis}}}" 169 #endif 170 171 /* Support for a compile-time default CPU, et cetera. The rules are: 172 --with-cpu is ignored if -mcpu is specified; likewise --with-cpu-32 173 and --with-cpu-64. 174 --with-tune is ignored if -mtune is specified; likewise --with-tune-32 175 and --with-tune-64. 176 --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu 177 are specified. 178 In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)} 179 here, otherwise say -mcpu=v7 would be passed even when -m64. 180 CC1_SPEC above takes care of this instead. 181 182 Note that the order of the cpu* and tune* options matters: the 183 config.gcc file always sets with_cpu to some value, even if the 184 user didn't use --with-cpu when invoking the configure script. 185 This value is based on the target name. Therefore we have to make 186 sure that --with-cpu-32 takes precedence to --with-cpu in < v9 187 systems, and that --with-cpu-64 takes precedence to --with-cpu in 188 >= v9 systems. As for the tune* options, in some platforms 189 config.gcc also sets a default value for it if the user didn't use 190 --with-tune when invoking the configure script. */ 191 #undef OPTION_DEFAULT_SPECS 192 #if DEFAULT_ARCH32_P 193 #define OPTION_DEFAULT_SPECS \ 194 {"cpu_32", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 195 {"cpu_64", "%{m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 196 {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 197 {"tune_32", "%{!m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 198 {"tune_64", "%{m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 199 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ 200 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } 201 #else 202 #define OPTION_DEFAULT_SPECS \ 203 {"cpu_32", "%{m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 204 {"cpu_64", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 205 {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ 206 {"tune_32", "%{m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 207 {"tune_64", "%{!m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \ 208 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ 209 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } 210 #endif 211 212 #if DEFAULT_ARCH32_P 213 #define MULTILIB_DEFAULTS { "m32" } 214 #else 215 #define MULTILIB_DEFAULTS { "m64" } 216 #endif 217 218 #else /* !SPARC_BI_ARCH */ 219 220 #undef LINK_SPEC 221 #define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ 222 %{!shared: \ 223 %{!static: \ 224 %{rdynamic:-export-dynamic} \ 225 -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 226 %{static:-static}} \ 227 %{!mno-relax:%{!r:-relax}} \ 228 " 229 230 #endif /* !SPARC_BI_ARCH */ 231 232 /* It's safe to pass -s always, even if -g is not used. */ 233 #undef ASM_SPEC 234 #define ASM_SPEC "\ 235 -s \ 236 %{" FPIE_OR_FPIC_SPEC ":-K PIC} \ 237 %{!.c:%{findirect-dispatch:-K PIC}} \ 238 %(asm_cpu) %(asm_arch) %(asm_relax)" 239 240 #undef ASM_OUTPUT_ALIGNED_LOCAL 241 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ 242 do { \ 243 fputs ("\t.local\t", (FILE)); \ 244 assemble_name ((FILE), (NAME)); \ 245 putc ('\n', (FILE)); \ 246 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ 247 } while (0) 248 249 #undef COMMON_ASM_OP 250 #define COMMON_ASM_OP "\t.common\t" 251 252 #undef LOCAL_LABEL_PREFIX 253 #define LOCAL_LABEL_PREFIX "." 254 255 /* DWARF bits. */ 256 257 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. 258 Obviously the Dwarf2 folks haven't tried to actually build systems 259 with their spec. On a 64-bit system, only 64-bit relocs become 260 RELATIVE relocations. */ 261 262 /* #define DWARF_OFFSET_SIZE PTR_SIZE */ 263 264 #undef DITF_CONVERSION_LIBFUNCS 265 #define DITF_CONVERSION_LIBFUNCS 1 266 267 #ifdef HAVE_AS_TLS 268 #undef TARGET_SUN_TLS 269 #undef TARGET_GNU_TLS 270 #define TARGET_SUN_TLS 0 271 #define TARGET_GNU_TLS 1 272 #endif 273 274 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */ 275 #undef CTORS_SECTION_ASM_OP 276 #undef DTORS_SECTION_ASM_OP 277 278 /* Static stack checking is supported by means of probes. */ 279 #define STACK_CHECK_STATIC_BUILTIN 1 280 281 #undef NEED_INDICATE_EXEC_STACK 282 #define NEED_INDICATE_EXEC_STACK 1 283 284 #ifdef TARGET_LIBC_PROVIDES_SSP 285 /* sparc glibc provides __stack_chk_guard in [%g7 + 0x14], 286 sparc64 glibc provides it at [%g7 + 0x28]. */ 287 #define TARGET_THREAD_SSP_OFFSET (TARGET_ARCH64 ? 0x28 : 0x14) 288 #endif 289 290 /* Define if long doubles should be mangled as 'g'. */ 291 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 292 293 /* We use glibc _mcount for profiling. */ 294 #undef NO_PROFILE_COUNTERS 295 #define NO_PROFILE_COUNTERS 1 296