1 /* Definitions for rtems targeting a PowerPC using elf. 2 Copyright (C) 1996-2022 Free Software Foundation, Inc. 3 Contributed by Joel Sherrill (joel@OARcorp.com). 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 /* Undef gnu-user.h macro we don't want. */ 27 #undef CPLUSPLUS_CPP_SPEC 28 29 /* Copy and paste from linux64.h and freebsd64.h */ 30 #ifdef IN_LIBGCC2 31 #undef TARGET_64BIT 32 #ifdef __powerpc64__ 33 #define TARGET_64BIT 1 34 #else 35 #define TARGET_64BIT 0 36 #endif 37 #endif 38 39 /* Copy and paste from linux64.h and freebsd64.h */ 40 #undef TARGET_AIX 41 #define TARGET_AIX TARGET_64BIT 42 43 /* Simplified copy and paste from linux64.h and freebsd64.h */ 44 #undef DOT_SYMBOLS 45 #define DOT_SYMBOLS 0 46 47 /* Copy and paste from linux64.h and freebsd64.h */ 48 #undef TARGET_CMODEL 49 #define TARGET_CMODEL rs6000_current_cmodel 50 #define SET_CMODEL(opt) rs6000_current_cmodel = opt 51 52 #undef TARGET_OS_CPP_BUILTINS 53 #define TARGET_OS_CPP_BUILTINS() \ 54 do \ 55 { \ 56 builtin_define ("__rtems__"); \ 57 builtin_define ("__USE_INIT_FINI__"); \ 58 builtin_assert ("system=rtems"); \ 59 if (TARGET_64BIT) \ 60 { \ 61 builtin_define ("__PPC__"); \ 62 builtin_define ("__PPC64__"); \ 63 builtin_define ("__powerpc64__"); \ 64 builtin_assert ("cpu=powerpc64"); \ 65 builtin_assert ("machine=powerpc64"); \ 66 } \ 67 else \ 68 { \ 69 builtin_define_std ("PPC"); \ 70 builtin_define_std ("powerpc"); \ 71 builtin_assert ("cpu=powerpc"); \ 72 builtin_assert ("machine=powerpc"); \ 73 TARGET_OS_SYSV_CPP_BUILTINS (); \ 74 } \ 75 } \ 76 while (0) 77 78 /* Copy and paste from linux64.h and freebsd64.h */ 79 #undef RELOCATABLE_NEEDS_FIXUP 80 #define RELOCATABLE_NEEDS_FIXUP \ 81 (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE) 82 83 /* Copy and paste from linux64.h */ 84 #undef RS6000_ABI_NAME 85 #define RS6000_ABI_NAME "linux" 86 87 /* Copy and paste from linux64.h and freebsd64.h */ 88 #define INVALID_64BIT "%<-m%s%> not supported in this configuration" 89 90 /* A lot of copy and paste from linux64.h and freebsd64.h */ 91 #undef SUBSUBTARGET_OVERRIDE_OPTIONS 92 #define SUBSUBTARGET_OVERRIDE_OPTIONS \ 93 do \ 94 { \ 95 if (rs6000_isa_flags & OPTION_MASK_64BIT) \ 96 { \ 97 rs6000_elf_abi = 2; \ 98 rs6000_current_abi = ABI_ELFv2; \ 99 if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \ 100 { \ 101 rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \ 102 error (INVALID_64BIT, "relocatable"); \ 103 } \ 104 if (rs6000_isa_flags & OPTION_MASK_EABI) \ 105 { \ 106 rs6000_isa_flags &= ~OPTION_MASK_EABI; \ 107 error (INVALID_64BIT, "eabi"); \ 108 } \ 109 if (TARGET_PROTOTYPE) \ 110 { \ 111 target_prototype = 0; \ 112 error (INVALID_64BIT, "prototype"); \ 113 } \ 114 if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \ 115 { \ 116 rs6000_isa_flags |= OPTION_MASK_POWERPC64; \ 117 error ("%<-m64%> requires a PowerPC64 cpu"); \ 118 } \ 119 if ((rs6000_isa_flags_explicit \ 120 & OPTION_MASK_MINIMAL_TOC) != 0) \ 121 { \ 122 if (OPTION_SET_P (rs6000_current_cmodel) \ 123 && rs6000_current_cmodel != CMODEL_SMALL) \ 124 error ("%<-mcmodel%> incompatible with other toc options"); \ 125 SET_CMODEL (CMODEL_SMALL); \ 126 } \ 127 else \ 128 { \ 129 if (!OPTION_SET_P (rs6000_current_cmodel)) \ 130 SET_CMODEL (CMODEL_MEDIUM); \ 131 if (rs6000_current_cmodel != CMODEL_SMALL) \ 132 { \ 133 TARGET_NO_FP_IN_TOC = 0; \ 134 TARGET_NO_SUM_IN_TOC = 0; \ 135 } \ 136 } \ 137 } \ 138 } \ 139 while (0) 140 141 #undef TARGET_LIBGCC_SDATA_SECTION 142 #define TARGET_LIBGCC_SDATA_SECTION ".sdata" 143 144 /* Copy and paste from linux64.h and freebsd64.h */ 145 #undef SIZE_TYPE 146 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") 147 148 /* Copy and paste from linux64.h and freebsd64.h */ 149 #undef PTRDIFF_TYPE 150 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 151 152 /* Copy and paste from freebsd64.h */ 153 #undef WCHAR_TYPE 154 155 /* Copy and paste from freebsd64.h */ 156 #undef WCHAR_TYPE_SIZE 157 #define WCHAR_TYPE_SIZE 32 158 159 /* Copy and paste from linux64.h and freebsd64.h */ 160 #ifdef __powerpc64__ 161 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ 162 asm (SECTION_OP "\n" \ 163 " bl " #FUNC "\n" \ 164 " nop\n" \ 165 " .previous"); 166 #endif 167 168 /* This could be also POWERPC_FREEBSD. It is related to the save/restore 169 defines below. */ 170 #define POWERPC_LINUX 171 172 /* Copy and paste from linux64.h and freebsd64.h */ 173 #undef SAVE_FP_PREFIX 174 #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_") 175 #undef SAVE_FP_SUFFIX 176 #define SAVE_FP_SUFFIX "" 177 #undef RESTORE_FP_PREFIX 178 #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_") 179 #undef RESTORE_FP_SUFFIX 180 #define RESTORE_FP_SUFFIX "" 181 182 /* Copy and paste from linux64.h and freebsd64.h */ 183 #undef ASM_PREFERRED_EH_DATA_FORMAT 184 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ 185 (TARGET_64BIT || flag_pic \ 186 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \ 187 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \ 188 : DW_EH_PE_absptr) 189 190 /* Copy and paste from linux64.h and freebsd64.h */ 191 #undef TOC_SECTION_ASM_OP 192 #define TOC_SECTION_ASM_OP \ 193 (TARGET_64BIT \ 194 ? "\t.section\t\".toc\",\"aw\"" \ 195 : "\t.section\t\".got\",\"aw\"") 196 197 /* Copy and paste from linux64.h and freebsd64.h */ 198 #undef MINIMAL_TOC_SECTION_ASM_OP 199 #define MINIMAL_TOC_SECTION_ASM_OP \ 200 (TARGET_64BIT \ 201 ? "\t.section\t\".toc1\",\"aw\"" \ 202 : (flag_pic \ 203 ? "\t.section\t\".got2\",\"aw\"" \ 204 : "\t.section\t\".got1\",\"aw\"")) 205 206 /* Copy and paste from linux64.h and freebsd64.h */ 207 #undef ASM_DECLARE_FUNCTION_SIZE 208 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ 209 do \ 210 { \ 211 if (!flag_inhibit_size_directive) \ 212 { \ 213 fputs ("\t.size\t", (FILE)); \ 214 if (TARGET_64BIT && DOT_SYMBOLS) \ 215 putc ('.', (FILE)); \ 216 assemble_name ((FILE), (FNAME)); \ 217 fputs (",.-", (FILE)); \ 218 rs6000_output_function_entry (FILE, FNAME); \ 219 putc ('\n', (FILE)); \ 220 } \ 221 } \ 222 while (0) 223 224 /* Copy and paste from linux64.h and freebsd64.h */ 225 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P 226 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ 227 (TARGET_TOC \ 228 && (SYMBOL_REF_P (X) \ 229 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ 230 && SYMBOL_REF_P (XEXP (XEXP (X, 0), 0))) \ 231 || GET_CODE (X) == LABEL_REF \ 232 || (CONST_INT_P (X) \ 233 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ 234 || (CONST_DOUBLE_P (X) \ 235 && ((TARGET_64BIT \ 236 && (TARGET_MINIMAL_TOC \ 237 || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ 238 && ! TARGET_NO_FP_IN_TOC))) \ 239 || (!TARGET_64BIT \ 240 && !TARGET_NO_FP_IN_TOC \ 241 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ 242 && BITS_PER_WORD == HOST_BITS_PER_INT))))) 243 244 #undef CPP_OS_DEFAULT_SPEC 245 #define CPP_OS_DEFAULT_SPEC "\ 246 %{!mcpu*: %{!Dppc*: %{!Dmpc*: -Dmpc750} } }\ 247 %{mcpu=403: %{!Dppc*: %{!Dmpc*: -Dppc403} } } \ 248 %{mcpu=505: %{!Dppc*: %{!Dmpc*: -Dmpc505} } } \ 249 %{mcpu=601: %{!Dppc*: %{!Dmpc*: -Dppc601} } } \ 250 %{mcpu=602: %{!Dppc*: %{!Dmpc*: -Dppc602} } } \ 251 %{mcpu=603: %{!Dppc*: %{!Dmpc*: -Dppc603} } } \ 252 %{mcpu=603e: %{!Dppc*: %{!Dmpc*: -Dppc603e} } } \ 253 %{mcpu=604: %{!Dppc*: %{!Dmpc*: -Dmpc604} } } \ 254 %{mcpu=750: %{!Dppc*: %{!Dmpc*: -Dmpc750} } } \ 255 %{mcpu=821: %{!Dppc*: %{!Dmpc*: -Dmpc821} } } \ 256 %{mcpu=860: %{!Dppc*: %{!Dmpc*: -Dmpc860} } } \ 257 %{mcpu=8540: %{!Dppc*: %{!Dmpc*: -Dppc8540} } } \ 258 %{mcpu=e6500: -D__PPC_CPU_E6500__} \ 259 %{mvrsave: -D__PPC_VRSAVE__}" 260 261 #undef ASM_SPEC 262 #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)" 263 264 #define ASM_SPEC32 "-a32 \ 265 %{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \ 266 %{memb|msdata=eabi: -memb}" 267 268 #define ASM_SPEC64 "-a64" 269 270 #define ASM_SPEC_COMMON "%(asm_cpu) \ 271 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \ 272 ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN) 273 274 #undef LINK_OS_DEFAULT_SPEC 275 #define LINK_OS_DEFAULT_SPEC \ 276 "%{!m64:%(link_os_spec32)}%{m64:%(link_os_spec64)}" 277 278 #define LINK_OS_SPEC32 ENDIAN_SELECT(" -m elf32ppc", \ 279 " -m elf32lppc", \ 280 " -m elf32ppc") 281 #define LINK_OS_SPEC64 ENDIAN_SELECT(" -m elf64ppc", \ 282 " -m elf64lppc", \ 283 " -m elf64ppc") 284 285 #undef SUBSUBTARGET_EXTRA_SPECS 286 #define SUBSUBTARGET_EXTRA_SPECS \ 287 { "asm_spec_common", ASM_SPEC_COMMON }, \ 288 { "asm_spec32", ASM_SPEC32 }, \ 289 { "asm_spec64", ASM_SPEC64 }, \ 290 { "link_os_spec32", LINK_OS_SPEC32 }, \ 291 { "link_os_spec64", LINK_OS_SPEC64 }, 292 293 /* Use gnu-user.h LINK_GCC_SEQUENCE_SPEC for rtems. */ 294 #undef LINK_GCC_C_SEQUENCE_SPEC 295 #define LINK_GCC_C_SEQUENCE_SPEC \ 296 "%{mads|myellowknife|mmvme|msim:%G %L %G;" \ 297 "!mcall-*|mcall-linux:" GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC ";" \ 298 ":%G %L %G}" 299 300 #define RTEMS_STARTFILE_SPEC "ecrti%O%s rtems_crti%O%s crtbegin%O%s" 301 #define RTEMS_ENDFILE_SPEC "crtend%O%s rtems_crtn%O%s ecrtn%O%s" 302