1 /* Target definitions for GCC for Intel 80386 running Solaris 2 2 Copyright (C) 1993-2018 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 can not 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 /* GNU as understands --32 and --64, but the native Solaris 58 assembler requires -xarch=generic or -xarch=generic64 instead. */ 59 #ifdef USE_GAS 60 #define ASM_CPU32_DEFAULT_SPEC "--32" 61 #define ASM_CPU64_DEFAULT_SPEC "--64" 62 #else 63 #define ASM_CPU32_DEFAULT_SPEC "-xarch=generic" 64 #define ASM_CPU64_DEFAULT_SPEC "-xarch=generic64" 65 #endif 66 67 /* Since Studio 12.6, as needs -xbrace_comment=no so its AVX512 syntax is 68 fully compatible with gas. */ 69 #ifdef HAVE_AS_XBRACE_COMMENT_OPTION 70 #define ASM_XBRACE_COMMENT_SPEC "-xbrace_comment=no" 71 #else 72 #define ASM_XBRACE_COMMENT_SPEC "" 73 #endif 74 75 #undef ASM_CPU_SPEC 76 #define ASM_CPU_SPEC "%(asm_cpu_default) " ASM_XBRACE_COMMENT_SPEC 77 78 /* Don't include ASM_PIC_SPEC. While the Solaris 10+ assembler accepts -K PIC, 79 it gives many warnings: 80 Absolute relocation is used for symbol "<symbol>" 81 GNU as doesn't recognize -K at all. */ 82 #undef ASM_SPEC 83 #define ASM_SPEC ASM_SPEC_BASE 84 85 #define DEFAULT_ARCH32_P !TARGET_64BIT_DEFAULT 86 87 #define ARCH64_SUBDIR "amd64" 88 89 #ifdef USE_GLD 90 /* Since binutils 2.21, GNU ld supports new *_sol2 emulations to strictly 91 follow the Solaris 2 ABI. Prefer them if present. */ 92 #ifdef HAVE_LD_SOL2_EMULATION 93 #define ARCH32_EMULATION "elf_i386_sol2" 94 #define ARCH64_EMULATION "elf_x86_64_sol2" 95 #else 96 #define ARCH32_EMULATION "elf_i386" 97 #define ARCH64_EMULATION "elf_x86_64" 98 #endif 99 #endif 100 101 #define ENDFILE_ARCH_SPEC \ 102 "%{mpc32:crtprec32.o%s} \ 103 %{mpc64:crtprec64.o%s} \ 104 %{mpc80:crtprec80.o%s}" 105 106 #define SUBTARGET_CPU_EXTRA_SPECS \ 107 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ 108 { "asm_cpu", ASM_CPU_SPEC }, \ 109 { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \ 110 111 /* Register the Solaris-specific #pragma directives. */ 112 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas () 113 114 #undef LOCAL_LABEL_PREFIX 115 #define LOCAL_LABEL_PREFIX "." 116 117 /* The Solaris 10 FCS as doesn't accept "#" comments, while later versions 118 do. */ 119 #undef ASM_COMMENT_START 120 #define ASM_COMMENT_START "/" 121 122 /* The 32-bit Solaris assembler does not support .quad. Do not use it. */ 123 #ifndef HAVE_AS_IX86_QUAD 124 #undef ASM_QUAD 125 #endif 126 127 /* The native Solaris assembler can't calculate the difference between 128 symbols in different sections, which causes problems for -fPIC jump 129 tables in .rodata. */ 130 #ifndef HAVE_AS_IX86_DIFF_SECT_DELTA 131 #undef JUMP_TABLES_IN_TEXT_SECTION 132 #define JUMP_TABLES_IN_TEXT_SECTION 1 133 134 /* The native Solaris assembler cannot handle the SYMBOL-. syntax, but 135 requires SYMBOL@rel/@rel64 instead. */ 136 #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \ 137 do { \ 138 fputs (integer_asm_op (SIZE, FALSE), FILE); \ 139 assemble_name (FILE, LABEL); \ 140 fputs (SIZE == 8 ? "@rel64" : "@rel", FILE); \ 141 } while (0) 142 #endif 143 144 /* The Solaris assembler wants a .local for non-exported aliases. */ 145 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \ 146 do { \ 147 tree id = DECL_ASSEMBLER_NAME (DECL); \ 148 ultimate_transparent_alias_target (&id); \ 149 const char *declname = IDENTIFIER_POINTER (id); \ 150 ASM_OUTPUT_DEF ((FILE), declname, \ 151 IDENTIFIER_POINTER (TARGET)); \ 152 if (! TREE_PUBLIC (DECL)) \ 153 { \ 154 fprintf ((FILE), "%s", LOCAL_ASM_OP); \ 155 assemble_name ((FILE), declname); \ 156 fprintf ((FILE), "\n"); \ 157 } \ 158 } while (0) 159 160 #ifndef USE_GAS 161 /* The Sun assembler uses .tcomm for TLS common sections. */ 162 #define TLS_COMMON_ASM_OP ".tcomm" 163 164 /* Similar to the Sun assembler on SPARC, the native assembler requires 165 TLS objects to be declared as @tls_obj (not @tls_object). Unlike SPARC, 166 gas doesn't understand this variant. */ 167 #undef ASM_DECLARE_OBJECT_NAME 168 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ 169 do \ 170 { \ 171 HOST_WIDE_INT size; \ 172 \ 173 if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL)) \ 174 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj"); \ 175 else \ 176 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ 177 \ 178 size_directive_output = 0; \ 179 if (!flag_inhibit_size_directive \ 180 && (DECL) && DECL_SIZE (DECL)) \ 181 { \ 182 size_directive_output = 1; \ 183 size = int_size_in_bytes (TREE_TYPE (DECL)); \ 184 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \ 185 } \ 186 \ 187 ASM_OUTPUT_LABEL (FILE, NAME); \ 188 } \ 189 while (0) 190 #endif /* !USE_GAS */ 191 192 /* As in sparc/sol2.h, override the default from i386/x86-64.h to work 193 around Sun as TLS bug. */ 194 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON 195 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 196 do \ 197 { \ 198 if (TARGET_SUN_TLS \ 199 && in_section \ 200 && ((in_section->common.flags & SECTION_TLS) == SECTION_TLS)) \ 201 switch_to_section (bss_section); \ 202 x86_elf_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN); \ 203 } \ 204 while (0) 205 206 /* Output a simple call for .init/.fini. */ 207 #define ASM_OUTPUT_CALL(FILE, FN) \ 208 do \ 209 { \ 210 fprintf (FILE, "\tcall\t"); \ 211 ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P'); \ 212 fprintf (FILE, "\n"); \ 213 } \ 214 while (0) 215 216 #undef TARGET_ASM_NAMED_SECTION 217 #define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section 218 219 /* Sun as requires "h" flag for large sections, GNU as can do without, but 220 accepts "l". */ 221 #ifdef USE_GAS 222 #define MACH_DEP_SECTION_ASM_FLAG 'l' 223 #else 224 #define MACH_DEP_SECTION_ASM_FLAG 'h' 225 #endif 226 227 #ifndef USE_GAS 228 /* Emit COMDAT group signature symbols for Sun as. */ 229 #undef TARGET_ASM_FILE_END 230 #define TARGET_ASM_FILE_END solaris_file_end 231 #endif 232 233 /* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so 234 inhibit their creation. Also cf. sparc/sysv4.h. */ 235 #ifndef USE_GLD 236 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors, \"aw\"" 237 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors, \"aw\"" 238 #endif 239 240 #ifndef USE_GAS 241 #define LARGECOMM_SECTION_ASM_OP "\t.lbcomm\t" 242 #endif 243 244 #define USE_IX86_FRAME_POINTER 1 245 #define USE_X86_64_FRAME_POINTER 1 246 247 #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