1 /* Target definitions for GCC for Intel 80386 running Solaris 2 2 Copyright (C) 1993-2020 Free Software Foundation, Inc. 3 Contributed by Fred Fish (fnf@cygnus.com). 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 SUBTARGET_OPTIMIZATION_OPTIONS \ 22 { OPT_LEVELS_1_PLUS, OPT_momit_leaf_frame_pointer, NULL, 1 } 23 24 /* 32-bit Solaris/x86 only guarantees 4-byte stack alignment as required by 25 the i386 psABI, so realign it as necessary for SSE instructions. */ 26 #undef STACK_REALIGN_DEFAULT 27 #define STACK_REALIGN_DEFAULT (TARGET_64BIT ? 0 : 1) 28 29 /* Old versions of the Solaris assembler cannot handle the difference of 30 labels in different sections, so force DW_EH_PE_datarel if so. */ 31 #ifndef HAVE_AS_IX86_DIFF_SECT_DELTA 32 #undef ASM_PREFERRED_EH_DATA_FORMAT 33 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ 34 (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0) \ 35 | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4 \ 36 : DW_EH_PE_datarel)) \ 37 : DW_EH_PE_absptr) 38 #endif 39 40 /* The Solaris linker will not merge a read-only .eh_frame section 41 with a read-write .eh_frame section. None of the encodings used 42 with non-PIC code require runtime relocations. In 64-bit mode, 43 since there is no backwards compatibility issue, we use a read-only 44 section for .eh_frame. In 32-bit mode, we use a writable .eh_frame 45 section in order to be compatible with G++ for Solaris x86. */ 46 #undef EH_TABLES_CAN_BE_READ_ONLY 47 #define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT) 48 49 /* Follow Sun requirements for TLS code sequences and use Sun assembler TLS 50 syntax. */ 51 #undef TARGET_SUN_TLS 52 #define TARGET_SUN_TLS 1 53 54 #undef CPP_SPEC 55 #define CPP_SPEC "%(cpp_subtarget)" 56 57 #undef CC1_SPEC 58 #define CC1_SPEC "%(cc1_cpu) " ASAN_CC1_SPEC \ 59 " %{mx32:%e-mx32 is not supported on Solaris}" 60 61 /* GNU as understands --32 and --64, but the native Solaris 62 assembler requires -xarch=generic or -xarch=generic64 instead. */ 63 #ifdef USE_GAS 64 #define ASM_CPU32_DEFAULT_SPEC "--32" 65 #define ASM_CPU64_DEFAULT_SPEC "--64" 66 #else 67 #define ASM_CPU32_DEFAULT_SPEC "-xarch=generic" 68 #define ASM_CPU64_DEFAULT_SPEC "-xarch=generic64" 69 #endif 70 71 /* Since Studio 12.6, as needs -xbrace_comment=no so its AVX512 syntax is 72 fully compatible with gas. */ 73 #ifdef HAVE_AS_XBRACE_COMMENT_OPTION 74 #define ASM_XBRACE_COMMENT_SPEC "-xbrace_comment=no" 75 #else 76 #define ASM_XBRACE_COMMENT_SPEC "" 77 #endif 78 79 #undef ASM_CPU_SPEC 80 #define ASM_CPU_SPEC "%(asm_cpu_default) " ASM_XBRACE_COMMENT_SPEC 81 82 /* Don't include ASM_PIC_SPEC. While the Solaris 10+ assembler accepts -K PIC, 83 it gives many warnings: 84 Absolute relocation is used for symbol "<symbol>" 85 GNU as doesn't recognize -K at all. */ 86 #undef ASM_SPEC 87 #define ASM_SPEC ASM_SPEC_BASE 88 89 #define DEFAULT_ARCH32_P !TARGET_64BIT_DEFAULT 90 91 #define ARCH64_SUBDIR "amd64" 92 93 #ifdef USE_GLD 94 /* Since binutils 2.21, GNU ld supports new *_sol2 emulations to strictly 95 follow the Solaris 2 ABI. Prefer them if present. */ 96 #ifdef HAVE_LD_SOL2_EMULATION 97 #define ARCH32_EMULATION "elf_i386_sol2" 98 #define ARCH64_EMULATION "elf_x86_64_sol2" 99 #else 100 #define ARCH32_EMULATION "elf_i386" 101 #define ARCH64_EMULATION "elf_x86_64" 102 #endif 103 #endif 104 105 #define ENDFILE_ARCH_SPEC \ 106 "%{mpc32:crtprec32.o%s} \ 107 %{mpc64:crtprec64.o%s} \ 108 %{mpc80:crtprec80.o%s}" 109 110 #define SUBTARGET_CPU_EXTRA_SPECS \ 111 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ 112 { "asm_cpu", ASM_CPU_SPEC }, \ 113 { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \ 114 115 /* Register the Solaris-specific #pragma directives. */ 116 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas () 117 118 #undef LOCAL_LABEL_PREFIX 119 #define LOCAL_LABEL_PREFIX "." 120 121 /* The 32-bit Solaris assembler does not support .quad. Do not use it. */ 122 #ifndef HAVE_AS_IX86_QUAD 123 #undef ASM_QUAD 124 #endif 125 126 /* The native Solaris assembler can't calculate the difference between 127 symbols in different sections, which causes problems for -fPIC jump 128 tables in .rodata. */ 129 #ifndef HAVE_AS_IX86_DIFF_SECT_DELTA 130 #undef JUMP_TABLES_IN_TEXT_SECTION 131 #define JUMP_TABLES_IN_TEXT_SECTION 1 132 133 /* The native Solaris assembler cannot handle the SYMBOL-. syntax, but 134 requires SYMBOL@rel/@rel64 instead. */ 135 #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \ 136 do { \ 137 fputs (integer_asm_op (SIZE, FALSE), FILE); \ 138 assemble_name (FILE, LABEL); \ 139 fputs (SIZE == 8 ? "@rel64" : "@rel", FILE); \ 140 } while (0) 141 #endif 142 143 /* The Solaris assembler wants a .local for non-exported aliases. */ 144 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \ 145 do { \ 146 tree id = DECL_ASSEMBLER_NAME (DECL); \ 147 ultimate_transparent_alias_target (&id); \ 148 const char *declname = IDENTIFIER_POINTER (id); \ 149 ASM_OUTPUT_DEF ((FILE), declname, \ 150 IDENTIFIER_POINTER (TARGET)); \ 151 if (! TREE_PUBLIC (DECL)) \ 152 { \ 153 fprintf ((FILE), "%s", LOCAL_ASM_OP); \ 154 assemble_name ((FILE), declname); \ 155 fprintf ((FILE), "\n"); \ 156 } \ 157 } while (0) 158 159 #ifndef USE_GAS 160 /* The Sun assembler uses .tcomm for TLS common sections. */ 161 #define TLS_COMMON_ASM_OP ".tcomm" 162 163 /* Similar to the Sun assembler on SPARC, the native assembler requires 164 TLS objects to be declared as @tls_obj (not @tls_object). Unlike SPARC, 165 gas doesn't understand this variant. */ 166 #undef ASM_DECLARE_OBJECT_NAME 167 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ 168 do \ 169 { \ 170 HOST_WIDE_INT size; \ 171 \ 172 if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL)) \ 173 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj"); \ 174 else \ 175 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ 176 \ 177 size_directive_output = 0; \ 178 if (!flag_inhibit_size_directive \ 179 && (DECL) && DECL_SIZE (DECL)) \ 180 { \ 181 size_directive_output = 1; \ 182 size = int_size_in_bytes (TREE_TYPE (DECL)); \ 183 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \ 184 } \ 185 \ 186 ASM_OUTPUT_LABEL (FILE, NAME); \ 187 } \ 188 while (0) 189 #endif /* !USE_GAS */ 190 191 /* As in sparc/sol2.h, override the default from i386/x86-64.h to work 192 around Sun as TLS bug. */ 193 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON 194 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 195 do \ 196 { \ 197 if (TARGET_SUN_TLS \ 198 && in_section \ 199 && ((in_section->common.flags & SECTION_TLS) == SECTION_TLS)) \ 200 switch_to_section (bss_section); \ 201 x86_elf_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN); \ 202 } \ 203 while (0) 204 205 /* Output a simple call for .init/.fini. */ 206 #define ASM_OUTPUT_CALL(FILE, FN) \ 207 do \ 208 { \ 209 fprintf (FILE, "\tcall\t"); \ 210 ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P'); \ 211 fprintf (FILE, "\n"); \ 212 } \ 213 while (0) 214 215 #undef TARGET_ASM_NAMED_SECTION 216 #define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section 217 218 /* Sun as requires "h" flag for large sections, GNU as can do without, but 219 accepts "l". */ 220 #ifdef USE_GAS 221 #define MACH_DEP_SECTION_ASM_FLAG 'l' 222 #else 223 #define MACH_DEP_SECTION_ASM_FLAG 'h' 224 #endif 225 226 #ifndef USE_GAS 227 /* Emit COMDAT group signature symbols for Sun as. */ 228 #undef TARGET_ASM_FILE_END 229 #define TARGET_ASM_FILE_END solaris_file_end 230 #endif 231 232 /* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so 233 inhibit their creation. Also cf. sparc/sysv4.h. */ 234 #ifndef USE_GLD 235 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors, \"aw\"" 236 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors, \"aw\"" 237 #endif 238 239 #ifndef USE_GAS 240 #define LARGECOMM_SECTION_ASM_OP "\t.lbcomm\t" 241 #endif 242 243 /* -fsanitize=address is currently only supported for 32-bit. */ 244 #define ASAN_REJECT_SPEC \ 245 DEF_ARCH64_SPEC("%e-fsanitize=address is not supported in this configuration") 246 247 #undef NO_PROFILE_COUNTERS 248 249 #undef MCOUNT_NAME 250 #define MCOUNT_NAME "_mcount" 251 252 /* We do not need NT_VERSION notes. */ 253 #undef X86_FILE_START_VERSION_DIRECTIVE 254 #define X86_FILE_START_VERSION_DIRECTIVE false 255