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1 /* Definitions for rtems targeting a PowerPC using elf.
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145
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2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
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3 Contributed by Joel Sherrill (joel@OARcorp.com).
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published
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9 by the Free Software Foundation; either version 3, or (at your
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10 option) any later version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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15 License for more details.
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16
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111
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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111
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26 /* Copy and paste from linux64.h and freebsd64.h */
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27 #ifdef IN_LIBGCC2
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28 #undef TARGET_64BIT
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29 #ifdef __powerpc64__
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30 #define TARGET_64BIT 1
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31 #else
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32 #define TARGET_64BIT 0
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33 #endif
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34 #endif
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35
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36 /* Copy and paste from linux64.h and freebsd64.h */
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37 #undef TARGET_AIX
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38 #define TARGET_AIX TARGET_64BIT
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39
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40 /* Simplified copy and paste from linux64.h and freebsd64.h */
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41 #undef DOT_SYMBOLS
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42 #define DOT_SYMBOLS 0
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43
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44 /* Copy and paste from linux64.h and freebsd64.h */
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45 #undef TARGET_CMODEL
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46 #define TARGET_CMODEL rs6000_current_cmodel
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47 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
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0
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48
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49 #undef TARGET_OS_CPP_BUILTINS
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111
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50 #define TARGET_OS_CPP_BUILTINS() \
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51 do \
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52 { \
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53 builtin_define ("__rtems__"); \
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54 builtin_define ("__USE_INIT_FINI__"); \
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55 builtin_assert ("system=rtems"); \
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56 if (TARGET_64BIT) \
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57 { \
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58 builtin_define ("__PPC__"); \
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59 builtin_define ("__PPC64__"); \
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60 builtin_define ("__powerpc64__"); \
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61 builtin_assert ("cpu=powerpc64"); \
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62 builtin_assert ("machine=powerpc64"); \
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63 } \
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64 else \
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65 { \
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66 builtin_define_std ("PPC"); \
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67 builtin_define_std ("powerpc"); \
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68 builtin_assert ("cpu=powerpc"); \
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69 builtin_assert ("machine=powerpc"); \
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70 TARGET_OS_SYSV_CPP_BUILTINS (); \
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71 } \
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72 } \
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73 while (0)
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74
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75 /* Copy and paste from linux64.h and freebsd64.h */
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76 #undef RELOCATABLE_NEEDS_FIXUP
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77 #define RELOCATABLE_NEEDS_FIXUP \
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78 (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE)
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79
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80 /* Copy and paste from linux64.h */
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81 #undef RS6000_ABI_NAME
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82 #define RS6000_ABI_NAME "linux"
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83
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84 /* Copy and paste from linux64.h and freebsd64.h */
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85 #define INVALID_64BIT "-m%s not supported in this configuration"
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86
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87 /* A lot of copy and paste from linux64.h and freebsd64.h */
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88 #undef SUBSUBTARGET_OVERRIDE_OPTIONS
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89 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
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90 do \
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91 { \
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92 if (rs6000_isa_flags & OPTION_MASK_64BIT) \
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93 { \
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94 rs6000_elf_abi = 2; \
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95 rs6000_current_abi = ABI_ELFv2; \
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96 if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \
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97 { \
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98 rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \
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99 error (INVALID_64BIT, "relocatable"); \
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100 } \
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101 if (rs6000_isa_flags & OPTION_MASK_EABI) \
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102 { \
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103 rs6000_isa_flags &= ~OPTION_MASK_EABI; \
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104 error (INVALID_64BIT, "eabi"); \
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105 } \
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106 if (TARGET_PROTOTYPE) \
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107 { \
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108 target_prototype = 0; \
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109 error (INVALID_64BIT, "prototype"); \
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110 } \
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111 if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \
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112 { \
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113 rs6000_isa_flags |= OPTION_MASK_POWERPC64; \
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114 error ("%<-m64%> requires a PowerPC64 cpu"); \
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111
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115 } \
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116 if ((rs6000_isa_flags_explicit \
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117 & OPTION_MASK_MINIMAL_TOC) != 0) \
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118 { \
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119 if (global_options_set.x_rs6000_current_cmodel \
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120 && rs6000_current_cmodel != CMODEL_SMALL) \
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121 error ("%<-mcmodel%> incompatible with other toc options"); \
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122 SET_CMODEL (CMODEL_SMALL); \
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123 } \
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124 else \
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125 { \
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126 if (!global_options_set.x_rs6000_current_cmodel) \
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127 SET_CMODEL (CMODEL_MEDIUM); \
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128 if (rs6000_current_cmodel != CMODEL_SMALL) \
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129 { \
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130 TARGET_NO_FP_IN_TOC = 0; \
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131 TARGET_NO_SUM_IN_TOC = 0; \
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132 } \
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133 } \
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134 } \
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135 } \
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136 while (0)
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137
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111
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138 #undef TARGET_LIBGCC_SDATA_SECTION
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139 #define TARGET_LIBGCC_SDATA_SECTION ".sdata"
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140
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141 /* Copy and paste from linux64.h and freebsd64.h */
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142 #undef SIZE_TYPE
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143 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
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144
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145 /* Copy and paste from linux64.h and freebsd64.h */
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146 #undef PTRDIFF_TYPE
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147 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
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148
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149 /* Copy and paste from freebsd64.h */
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150 #undef WCHAR_TYPE
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151
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152 /* Copy and paste from freebsd64.h */
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153 #undef WCHAR_TYPE_SIZE
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154 #define WCHAR_TYPE_SIZE 32
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155
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156 /* Copy and paste from linux64.h and freebsd64.h */
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157 #ifdef __powerpc64__
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158 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
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159 asm (SECTION_OP "\n" \
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160 " bl " #FUNC "\n" \
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161 " nop\n" \
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162 " .previous");
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163 #endif
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164
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165 /* This could be also POWERPC_FREEBSD. It is related to the save/restore
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166 defines below. */
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167 #define POWERPC_LINUX
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168
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169 /* Copy and paste from linux64.h and freebsd64.h */
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170 #undef SAVE_FP_PREFIX
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171 #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
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172 #undef SAVE_FP_SUFFIX
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173 #define SAVE_FP_SUFFIX ""
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174 #undef RESTORE_FP_PREFIX
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175 #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
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176 #undef RESTORE_FP_SUFFIX
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177 #define RESTORE_FP_SUFFIX ""
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178
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179 /* Copy and paste from linux64.h and freebsd64.h */
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180 #undef ASM_PREFERRED_EH_DATA_FORMAT
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181 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
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182 (TARGET_64BIT || flag_pic \
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183 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
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184 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
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185 : DW_EH_PE_absptr)
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186
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187 /* Copy and paste from linux64.h and freebsd64.h */
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188 #undef TOC_SECTION_ASM_OP
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189 #define TOC_SECTION_ASM_OP \
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190 (TARGET_64BIT \
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191 ? "\t.section\t\".toc\",\"aw\"" \
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192 : "\t.section\t\".got\",\"aw\"")
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193
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194 /* Copy and paste from linux64.h and freebsd64.h */
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195 #undef MINIMAL_TOC_SECTION_ASM_OP
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196 #define MINIMAL_TOC_SECTION_ASM_OP \
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197 (TARGET_64BIT \
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198 ? "\t.section\t\".toc1\",\"aw\"" \
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199 : (flag_pic \
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200 ? "\t.section\t\".got2\",\"aw\"" \
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201 : "\t.section\t\".got1\",\"aw\""))
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202
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203 /* Copy and paste from linux64.h and freebsd64.h */
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204 #undef ASM_DECLARE_FUNCTION_SIZE
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205 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
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206 do \
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207 { \
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208 if (!flag_inhibit_size_directive) \
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209 { \
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210 fputs ("\t.size\t", (FILE)); \
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211 if (TARGET_64BIT && DOT_SYMBOLS) \
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212 putc ('.', (FILE)); \
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213 assemble_name ((FILE), (FNAME)); \
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214 fputs (",.-", (FILE)); \
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215 rs6000_output_function_entry (FILE, FNAME); \
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216 putc ('\n', (FILE)); \
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217 } \
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218 } \
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219 while (0)
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220
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221 /* Copy and paste from linux64.h and freebsd64.h */
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222 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
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223 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
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224 (TARGET_TOC \
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225 && (SYMBOL_REF_P (X) \
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226 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
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227 && SYMBOL_REF_P (XEXP (XEXP (X, 0), 0))) \
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111
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228 || GET_CODE (X) == LABEL_REF \
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229 || (CONST_INT_P (X) \
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111
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230 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
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231 || (CONST_DOUBLE_P (X) \
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111
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232 && ((TARGET_64BIT \
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233 && (TARGET_MINIMAL_TOC \
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234 || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
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235 && ! TARGET_NO_FP_IN_TOC))) \
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236 || (!TARGET_64BIT \
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237 && !TARGET_NO_FP_IN_TOC \
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238 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
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239 && BITS_PER_WORD == HOST_BITS_PER_INT)))))
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240
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241 #undef CPP_OS_DEFAULT_SPEC
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242 #define CPP_OS_DEFAULT_SPEC "\
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243 %{!mcpu*: %{!Dppc*: %{!Dmpc*: -Dmpc750} } }\
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244 %{mcpu=403: %{!Dppc*: %{!Dmpc*: -Dppc403} } } \
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245 %{mcpu=505: %{!Dppc*: %{!Dmpc*: -Dmpc505} } } \
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246 %{mcpu=601: %{!Dppc*: %{!Dmpc*: -Dppc601} } } \
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247 %{mcpu=602: %{!Dppc*: %{!Dmpc*: -Dppc602} } } \
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248 %{mcpu=603: %{!Dppc*: %{!Dmpc*: -Dppc603} } } \
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249 %{mcpu=603e: %{!Dppc*: %{!Dmpc*: -Dppc603e} } } \
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250 %{mcpu=604: %{!Dppc*: %{!Dmpc*: -Dmpc604} } } \
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251 %{mcpu=750: %{!Dppc*: %{!Dmpc*: -Dmpc750} } } \
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252 %{mcpu=821: %{!Dppc*: %{!Dmpc*: -Dmpc821} } } \
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253 %{mcpu=860: %{!Dppc*: %{!Dmpc*: -Dmpc860} } } \
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254 %{mcpu=8540: %{!Dppc*: %{!Dmpc*: -Dppc8540} } } \
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255 %{mcpu=e6500: -D__PPC_CPU_E6500__}"
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256
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257 #undef ASM_SPEC
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258 #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
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259
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260 #define ASM_SPEC32 "-a32 \
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261 %{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \
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262 %{memb|msdata=eabi: -memb}"
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263
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264 #define ASM_SPEC64 "-a64"
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265
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266 #define ASM_SPEC_COMMON "%(asm_cpu) \
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267 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \
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268 ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
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269
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270 #undef LINK_OS_DEFAULT_SPEC
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271 #define LINK_OS_DEFAULT_SPEC \
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272 "%{!m64:%(link_os_spec32)}%{m64:%(link_os_spec64)}"
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273
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274 #define LINK_OS_SPEC32 ENDIAN_SELECT(" -m elf32ppc", \
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275 " -m elf32lppc", \
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276 " -m elf32ppc")
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277 #define LINK_OS_SPEC64 ENDIAN_SELECT(" -m elf64ppc", \
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278 " -m elf64lppc", \
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279 " -m elf64ppc")
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280
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281 #undef SUBSUBTARGET_EXTRA_SPECS
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282 #define SUBSUBTARGET_EXTRA_SPECS \
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111
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283 { "asm_spec_common", ASM_SPEC_COMMON }, \
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284 { "asm_spec32", ASM_SPEC32 }, \
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285 { "asm_spec64", ASM_SPEC64 }, \
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286 { "link_os_spec32", LINK_OS_SPEC32 }, \
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287 { "link_os_spec64", LINK_OS_SPEC64 },
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288
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289 /* Use gnu-user.h LINK_GCC_SEQUENCE_SPEC for rtems. */
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290 #undef LINK_GCC_C_SEQUENCE_SPEC
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291 #define LINK_GCC_C_SEQUENCE_SPEC \
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292 "%{mads|myellowknife|mmvme|msim:%G %L %G;" \
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293 "!mcall-*|mcall-linux:" GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC ";" \
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294 ":%G %L %G}"
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