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0
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1 /* Definitions of target machine for GNU compiler,
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2 for 64 bit PowerPC linux.
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3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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4 2009 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published
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10 by the Free Software Foundation; either version 3, or (at your
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11 option) any later version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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16 License for more details.
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17
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18 Under Section 7 of GPL version 3, you are granted additional
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19 permissions described in the GCC Runtime Library Exception, version
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20 3.1, as published by the Free Software Foundation.
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21
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22 You should have received a copy of the GNU General Public License and
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23 a copy of the GCC Runtime Library Exception along with this program;
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24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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25 <http://www.gnu.org/licenses/>. */
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26
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27 #ifndef RS6000_BI_ARCH
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28
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29 #undef DEFAULT_ABI
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30 #define DEFAULT_ABI ABI_AIX
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31
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32 #undef TARGET_64BIT
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33 #define TARGET_64BIT 1
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34
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35 #define DEFAULT_ARCH64_P 1
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36 #define RS6000_BI_ARCH_P 0
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37
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38 #else
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39
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40 #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
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41 #define RS6000_BI_ARCH_P 1
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42
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43 #endif
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44
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45 #ifdef IN_LIBGCC2
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46 #undef TARGET_64BIT
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47 #ifdef __powerpc64__
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48 #define TARGET_64BIT 1
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49 #else
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50 #define TARGET_64BIT 0
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51 #endif
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52 #endif
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53
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54 #undef TARGET_AIX
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55 #define TARGET_AIX TARGET_64BIT
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56
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57 #ifdef HAVE_LD_NO_DOT_SYMS
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58 /* New ABI uses a local sym for the function entry point. */
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59 extern int dot_symbols;
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60 #undef DOT_SYMBOLS
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61 #define DOT_SYMBOLS dot_symbols
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62 #endif
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63
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64 #undef PROCESSOR_DEFAULT
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65 #define PROCESSOR_DEFAULT PROCESSOR_POWER6
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66 #undef PROCESSOR_DEFAULT64
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67 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER6
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68
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69 /* We don't need to generate entries in .fixup, except when
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70 -mrelocatable or -mrelocatable-lib is given. */
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71 #undef RELOCATABLE_NEEDS_FIXUP
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72 #define RELOCATABLE_NEEDS_FIXUP \
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73 (target_flags & target_flags_explicit & MASK_RELOCATABLE)
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74
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75 #undef RS6000_ABI_NAME
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76 #define RS6000_ABI_NAME "linux"
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77
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78 #define INVALID_64BIT "-m%s not supported in this configuration"
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79 #define INVALID_32BIT INVALID_64BIT
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80
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81 #undef SUBSUBTARGET_OVERRIDE_OPTIONS
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82 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
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83 do \
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84 { \
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85 if (!rs6000_explicit_options.alignment) \
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86 rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
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87 if (TARGET_64BIT) \
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88 { \
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89 if (DEFAULT_ABI != ABI_AIX) \
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90 { \
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91 rs6000_current_abi = ABI_AIX; \
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92 error (INVALID_64BIT, "call"); \
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93 } \
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94 dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
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95 if (target_flags & MASK_RELOCATABLE) \
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96 { \
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97 target_flags &= ~MASK_RELOCATABLE; \
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98 error (INVALID_64BIT, "relocatable"); \
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99 } \
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100 if (target_flags & MASK_EABI) \
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101 { \
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102 target_flags &= ~MASK_EABI; \
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103 error (INVALID_64BIT, "eabi"); \
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104 } \
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105 if (TARGET_PROTOTYPE) \
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106 { \
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107 TARGET_PROTOTYPE = 0; \
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108 error (INVALID_64BIT, "prototype"); \
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109 } \
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110 if ((target_flags & MASK_POWERPC64) == 0) \
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111 { \
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112 target_flags |= MASK_POWERPC64; \
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113 error ("-m64 requires a PowerPC64 cpu"); \
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114 } \
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115 } \
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116 else \
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117 { \
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118 if (!RS6000_BI_ARCH_P) \
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119 error (INVALID_32BIT, "32"); \
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120 if (TARGET_PROFILE_KERNEL) \
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121 { \
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122 target_flags &= ~MASK_PROFILE_KERNEL; \
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123 error (INVALID_32BIT, "profile-kernel"); \
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124 } \
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125 } \
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126 } \
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127 while (0)
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128
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129 #ifdef RS6000_BI_ARCH
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130
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131 #undef OVERRIDE_OPTIONS
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132 #define OVERRIDE_OPTIONS \
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133 rs6000_override_options (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
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134 ? (char *) 0 : TARGET_CPU_DEFAULT)
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135
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136 #endif
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137
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138 #undef ASM_DEFAULT_SPEC
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139 #undef ASM_SPEC
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140 #undef LINK_OS_LINUX_SPEC
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141
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142 #ifndef RS6000_BI_ARCH
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143 #define ASM_DEFAULT_SPEC "-mppc64"
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144 #define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
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145 #define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)"
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146 #else
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147 #if DEFAULT_ARCH64_P
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148 #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
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149 #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
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150 #define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}"
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151 #else
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152 #define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
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153 #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
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154 #define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}"
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155 #endif
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156 #endif
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157
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158 #define ASM_SPEC32 "-a32 %{n} %{T} %{Ym,*} %{Yd,*} \
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159 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
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160 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
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161 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
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162 %{mcall-freebsd: -mbig} \
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163 %{mcall-i960-old: -mlittle} \
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164 %{mcall-linux: -mbig} \
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165 %{mcall-gnu: -mbig} \
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166 %{mcall-netbsd: -mbig} \
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167 }}}}"
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168
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169 #define ASM_SPEC64 "-a64"
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170
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171 #define ASM_SPEC_COMMON "%(asm_cpu) \
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172 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
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173 %{v:-V} %{Qy:} %{!Qn:-Qy} %{Wa,*:%*} \
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174 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
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175
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176 #undef SUBSUBTARGET_EXTRA_SPECS
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177 #define SUBSUBTARGET_EXTRA_SPECS \
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178 { "asm_spec_common", ASM_SPEC_COMMON }, \
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179 { "asm_spec32", ASM_SPEC32 }, \
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180 { "asm_spec64", ASM_SPEC64 }, \
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181 { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \
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182 { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 },
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183
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184 #undef MULTILIB_DEFAULTS
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185 #if DEFAULT_ARCH64_P
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186 #define MULTILIB_DEFAULTS { "m64" }
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187 #else
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188 #define MULTILIB_DEFAULTS { "m32" }
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189 #endif
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190
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191 #ifndef RS6000_BI_ARCH
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192
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193 /* 64-bit PowerPC Linux is always big-endian. */
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194 #undef TARGET_LITTLE_ENDIAN
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195 #define TARGET_LITTLE_ENDIAN 0
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196
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197 /* 64-bit PowerPC Linux always has a TOC. */
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198 #undef TARGET_TOC
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199 #define TARGET_TOC 1
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200
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201 /* Some things from sysv4.h we don't do when 64 bit. */
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202 #undef TARGET_RELOCATABLE
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203 #define TARGET_RELOCATABLE 0
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204 #undef TARGET_EABI
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205 #define TARGET_EABI 0
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206 #undef TARGET_PROTOTYPE
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207 #define TARGET_PROTOTYPE 0
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208 #undef RELOCATABLE_NEEDS_FIXUP
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209 #define RELOCATABLE_NEEDS_FIXUP 0
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210
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211 #endif
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212
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213 /* We use glibc _mcount for profiling. */
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214 #define NO_PROFILE_COUNTERS 1
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215 #define PROFILE_HOOK(LABEL) \
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216 do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0)
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217
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218 /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */
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219 #undef ADJUST_FIELD_ALIGN
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220 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
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221 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
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222 ? 128 \
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223 : (TARGET_64BIT \
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224 && TARGET_ALIGN_NATURAL == 0 \
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225 && TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \
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226 ? MIN ((COMPUTED), 32) \
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227 : (COMPUTED))
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228
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229 /* PowerPC64 Linux increases natural record alignment to doubleword if
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230 the first field is an FP double, only if in power alignment mode. */
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231 #undef ROUND_TYPE_ALIGN
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232 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
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233 ((TARGET_64BIT \
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234 && (TREE_CODE (STRUCT) == RECORD_TYPE \
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235 || TREE_CODE (STRUCT) == UNION_TYPE \
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236 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
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237 && TARGET_ALIGN_NATURAL == 0) \
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238 ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
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239 : MAX ((COMPUTED), (SPECIFIED)))
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240
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241 /* Use the default for compiling target libs. */
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242 #ifdef IN_TARGET_LIBS
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243 #undef TARGET_ALIGN_NATURAL
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244 #define TARGET_ALIGN_NATURAL 1
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245 #endif
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246
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247 /* Indicate that jump tables go in the text section. */
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248 #undef JUMP_TABLES_IN_TEXT_SECTION
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249 #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
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250
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251 /* The linux ppc64 ABI isn't explicit on whether aggregates smaller
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252 than a doubleword should be padded upward or downward. You could
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253 reasonably assume that they follow the normal rules for structure
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254 layout treating the parameter area as any other block of memory,
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255 then map the reg param area to registers. i.e. pad upward.
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256 Setting both of the following defines results in this behavior.
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257 Setting just the first one will result in aggregates that fit in a
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258 doubleword being padded downward, and others being padded upward.
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259 Not a bad idea as this results in struct { int x; } being passed
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260 the same way as an int. */
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261 #define AGGREGATE_PADDING_FIXED TARGET_64BIT
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262 #define AGGREGATES_PAD_UPWARD_ALWAYS 0
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263
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264 /* Specify padding for the last element of a block move between
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265 registers and memory. FIRST is nonzero if this is the only
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266 element. */
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267 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
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268 (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
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269
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270 /* __throw will restore its own return address to be the same as the
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271 return address of the function that the throw is being made to.
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272 This is unfortunate, because we want to check the original
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273 return address to see if we need to restore the TOC.
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274 So we have to squirrel it away with this. */
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275 #define SETUP_FRAME_ADDRESSES() \
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276 do { if (TARGET_64BIT) rs6000_aix_emit_builtin_unwind_init (); } while (0)
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277
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278 /* Override svr4.h */
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279 #undef MD_EXEC_PREFIX
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280 #undef MD_STARTFILE_PREFIX
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281
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282 /* Linux doesn't support saving and restoring 64-bit regs in a 32-bit
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283 process. */
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284 #define OS_MISSING_POWERPC64 !TARGET_64BIT
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285
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286 /* glibc has float and long double forms of math functions. */
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287 #undef TARGET_C99_FUNCTIONS
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288 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
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289
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290 /* Whether we have sincos that follows the GNU extension. */
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291 #undef TARGET_HAS_SINCOS
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292 #define TARGET_HAS_SINCOS (OPTION_GLIBC)
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293
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294 #undef TARGET_OS_CPP_BUILTINS
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295 #define TARGET_OS_CPP_BUILTINS() \
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296 do \
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297 { \
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298 if (TARGET_64BIT) \
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299 { \
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300 builtin_define ("__PPC__"); \
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301 builtin_define ("__PPC64__"); \
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302 builtin_define ("__powerpc__"); \
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303 builtin_define ("__powerpc64__"); \
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304 builtin_assert ("cpu=powerpc64"); \
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305 builtin_assert ("machine=powerpc64"); \
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306 } \
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307 else \
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308 { \
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309 builtin_define_std ("PPC"); \
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310 builtin_define_std ("powerpc"); \
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311 builtin_assert ("cpu=powerpc"); \
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312 builtin_assert ("machine=powerpc"); \
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313 TARGET_OS_SYSV_CPP_BUILTINS (); \
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314 } \
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315 } \
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316 while (0)
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317
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318 #undef CPP_OS_DEFAULT_SPEC
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319 #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
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320
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321 /* The GNU C++ standard library currently requires _GNU_SOURCE being
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322 defined on glibc-based systems. This temporary hack accomplishes this,
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323 it should go away as soon as libstdc++-v3 has a real fix. */
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324 #undef CPLUSPLUS_CPP_SPEC
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325 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
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326
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327 #undef LINK_SHLIB_SPEC
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328 #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
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329
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330 #undef LIB_DEFAULT_SPEC
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331 #define LIB_DEFAULT_SPEC "%(lib_linux)"
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332
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333 #undef STARTFILE_DEFAULT_SPEC
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334 #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)"
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335
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336 #undef ENDFILE_DEFAULT_SPEC
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337 #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)"
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338
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339 #undef LINK_START_DEFAULT_SPEC
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340 #define LINK_START_DEFAULT_SPEC "%(link_start_linux)"
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341
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342 #undef LINK_OS_DEFAULT_SPEC
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343 #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
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344
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345 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
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346 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
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347 #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
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348 #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
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349 #if UCLIBC_DEFAULT
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350 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
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351 #else
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352 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
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353 #endif
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354 #define LINUX_DYNAMIC_LINKER32 \
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355 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
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356 #define LINUX_DYNAMIC_LINKER64 \
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357 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
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358
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359
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360 #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
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361 %{rdynamic:-export-dynamic} \
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362 %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}}}"
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363
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364 #define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \
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365 %{rdynamic:-export-dynamic} \
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366 %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}"
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367
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368 #undef TOC_SECTION_ASM_OP
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369 #define TOC_SECTION_ASM_OP \
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370 (TARGET_64BIT \
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371 ? "\t.section\t\".toc\",\"aw\"" \
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372 : "\t.section\t\".got\",\"aw\"")
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373
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374 #undef MINIMAL_TOC_SECTION_ASM_OP
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375 #define MINIMAL_TOC_SECTION_ASM_OP \
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376 (TARGET_64BIT \
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377 ? "\t.section\t\".toc1\",\"aw\"" \
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378 : ((TARGET_RELOCATABLE || flag_pic) \
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379 ? "\t.section\t\".got2\",\"aw\"" \
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380 : "\t.section\t\".got1\",\"aw\""))
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381
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382 #undef TARGET_VERSION
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383 #define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)");
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384
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385 /* Must be at least as big as our pointer type. */
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386 #undef SIZE_TYPE
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387 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
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388
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389 #undef PTRDIFF_TYPE
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390 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
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391
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392 #undef WCHAR_TYPE
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393 #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
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394 #undef WCHAR_TYPE_SIZE
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395 #define WCHAR_TYPE_SIZE 32
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396
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397 /* Override rs6000.h definition. */
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398 #undef ASM_APP_ON
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399 #define ASM_APP_ON "#APP\n"
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400
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401 /* Override rs6000.h definition. */
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402 #undef ASM_APP_OFF
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403 #define ASM_APP_OFF "#NO_APP\n"
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404
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405 /* PowerPC no-op instruction. */
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406 #undef RS6000_CALL_GLUE
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407 #define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31")
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408
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409 #undef RS6000_MCOUNT
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410 #define RS6000_MCOUNT "_mcount"
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411
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412 #ifdef __powerpc64__
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413 /* _init and _fini functions are built from bits spread across many
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414 object files, each potentially with a different TOC pointer. For
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415 that reason, place a nop after the call so that the linker can
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416 restore the TOC pointer if a TOC adjusting call stub is needed. */
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417 #if DOT_SYMBOLS
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418 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
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419 asm (SECTION_OP "\n" \
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420 " bl ." #FUNC "\n" \
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421 " nop\n" \
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422 " .previous");
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423 #else
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424 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
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425 asm (SECTION_OP "\n" \
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426 " bl " #FUNC "\n" \
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427 " nop\n" \
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428 " .previous");
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429 #endif
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430 #endif
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431
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432 /* FP save and restore routines. */
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433 #undef SAVE_FP_PREFIX
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434 #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
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435 #undef SAVE_FP_SUFFIX
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436 #define SAVE_FP_SUFFIX (TARGET_64BIT ? "" : "_l")
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437 #undef RESTORE_FP_PREFIX
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438 #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
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439 #undef RESTORE_FP_SUFFIX
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440 #define RESTORE_FP_SUFFIX (TARGET_64BIT ? "" : "_l")
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441
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442 /* Dwarf2 debugging. */
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443 #undef PREFERRED_DEBUGGING_TYPE
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444 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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445
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446 /* This is how to declare the size of a function. */
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447 #undef ASM_DECLARE_FUNCTION_SIZE
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448 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
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449 do \
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450 { \
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451 if (!flag_inhibit_size_directive) \
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452 { \
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453 fputs ("\t.size\t", (FILE)); \
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454 if (TARGET_64BIT && DOT_SYMBOLS) \
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455 putc ('.', (FILE)); \
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456 assemble_name ((FILE), (FNAME)); \
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457 fputs (",.-", (FILE)); \
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458 rs6000_output_function_entry (FILE, FNAME); \
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459 putc ('\n', (FILE)); \
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|
460 } \
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461 } \
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|
|
462 while (0)
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463
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|
|
464 /* Return nonzero if this entry is to be written into the constant
|
|
|
465 pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF
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|
466 or a CONST containing one of them. If -mfp-in-toc (the default),
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467 we also do this for floating-point constants. We actually can only
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|
468 do this if the FP formats of the target and host machines are the
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|
|
469 same, but we can't check that since not every file that uses
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|
470 GO_IF_LEGITIMATE_ADDRESS_P includes real.h. We also do this when
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|
|
471 we can write the entry into the TOC and the entry is not larger
|
|
|
472 than a TOC entry. */
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|
|
473
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|
|
474 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
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|
|
475 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
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|
|
476 (TARGET_TOC \
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|
|
477 && (GET_CODE (X) == SYMBOL_REF \
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|
|
478 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
|
|
|
479 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
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|
|
480 || GET_CODE (X) == LABEL_REF \
|
|
|
481 || (GET_CODE (X) == CONST_INT \
|
|
|
482 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
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|
|
483 || (GET_CODE (X) == CONST_DOUBLE \
|
|
|
484 && ((TARGET_64BIT \
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|
|
485 && (TARGET_MINIMAL_TOC \
|
|
|
486 || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
|
|
|
487 && ! TARGET_NO_FP_IN_TOC))) \
|
|
|
488 || (!TARGET_64BIT \
|
|
|
489 && !TARGET_NO_FP_IN_TOC \
|
|
|
490 && !TARGET_RELOCATABLE \
|
|
|
491 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
|
|
|
492 && BITS_PER_WORD == HOST_BITS_PER_INT)))))
|
|
|
493
|
|
|
494 /* Select a format to encode pointers in exception handling data. CODE
|
|
|
495 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
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|
|
496 true if the symbol may be affected by dynamic relocations. */
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|
|
497 #undef ASM_PREFERRED_EH_DATA_FORMAT
|
|
|
498 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
|
|
|
499 ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \
|
|
|
500 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
|
|
|
501 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
|
|
|
502 : DW_EH_PE_absptr)
|
|
|
503
|
|
|
504 /* For backward compatibility, we must continue to use the AIX
|
|
|
505 structure return convention. */
|
|
|
506 #undef DRAFT_V4_STRUCT_RET
|
|
|
507 #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT)
|
|
|
508
|
|
|
509 #define TARGET_ASM_FILE_END rs6000_elf_end_indicate_exec_stack
|
|
|
510
|
|
|
511 #define TARGET_POSIX_IO
|
|
|
512
|
|
|
513 #define LINK_GCC_C_SEQUENCE_SPEC \
|
|
|
514 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
|
|
|
515
|
|
|
516 /* Use --as-needed -lgcc_s for eh support. */
|
|
|
517 #ifdef HAVE_LD_AS_NEEDED
|
|
|
518 #define USE_LD_AS_NEEDED 1
|
|
|
519 #endif
|
|
|
520
|
|
|
521 #define MD_UNWIND_SUPPORT "config/rs6000/linux-unwind.h"
|
|
|
522
|
|
|
523 #ifdef TARGET_LIBC_PROVIDES_SSP
|
|
|
524 /* ppc32 glibc provides __stack_chk_guard in -0x7008(2),
|
|
|
525 ppc64 glibc provides it at -0x7010(13). */
|
|
|
526 #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008)
|
|
|
527 #endif
|
|
|
528
|
|
|
529 #define POWERPC_LINUX
|
|
|
530
|
|
|
531 /* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */
|
|
|
532 #ifdef TARGET_DEFAULT_LONG_DOUBLE_128
|
|
|
533 #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
|
|
|
534 #endif
|
