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1 /* Definitions of target machine for GNU compiler,
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2 for IBM RS/6000 POWER running AIX version 4.3.
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3 Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
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4 2007 Free Software Foundation, Inc.
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5 Contributed by David Edelsohn (edelsohn@gnu.org).
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published
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11 by the Free Software Foundation; either version 3, or (at your
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12 option) any later version.
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13
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14 GCC is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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17 License for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with GCC; see the file COPYING3. If not see
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21 <http://www.gnu.org/licenses/>. */
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22
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23 /* Sometimes certain combinations of command options do not make sense
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24 on a particular target machine. You can define a macro
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25 `OVERRIDE_OPTIONS' to take account of this. This macro, if
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26 defined, is executed once just after all the command options have
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27 been parsed.
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28
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29 The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
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30 get control. */
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31
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32 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
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33 #define SUBTARGET_OVERRIDE_OPTIONS \
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34 do { \
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35 if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS)) \
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36 { \
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37 target_flags &= ~NON_POWERPC_MASKS; \
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38 warning (0, "-maix64 and POWER architecture are incompatible"); \
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39 } \
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40 if (TARGET_64BIT && ! TARGET_POWERPC64) \
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41 { \
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42 target_flags |= MASK_POWERPC64; \
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43 warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
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44 } \
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45 if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128) \
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46 { \
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47 rs6000_long_double_type_size = 64; \
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48 if (rs6000_explicit_options.long_double) \
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49 warning (0, "soft-float and long-double-128 are incompatible"); \
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50 } \
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51 if (TARGET_POWERPC64 && ! TARGET_64BIT) \
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52 { \
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53 error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
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54 } \
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55 } while (0);
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56
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57 #undef ASM_SPEC
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58 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
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59
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60 /* Common ASM definitions used by ASM_SPEC amongst the various targets
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61 for handling -mcpu=xxx switches. */
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62 #undef ASM_CPU_SPEC
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63 #define ASM_CPU_SPEC \
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64 "%{!mcpu*: %{!maix64: \
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65 %{mpower: %{!mpower2: -mpwr}} \
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66 %{mpower2: -mpwr2} \
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67 %{mpowerpc*: %{!mpowerpc64: -mppc}} \
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68 %{mpowerpc64: -mppc64} \
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69 %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
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70 %{mcpu=common: -mcom} \
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71 %{mcpu=power: -mpwr} \
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72 %{mcpu=power2: -mpwr2} \
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73 %{mcpu=power3: -m620} \
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74 %{mcpu=power4: -m620} \
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75 %{mcpu=powerpc: -mppc} \
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76 %{mcpu=rios: -mpwr} \
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77 %{mcpu=rios1: -mpwr} \
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78 %{mcpu=rios2: -mpwr2} \
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79 %{mcpu=rsc: -mpwr} \
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80 %{mcpu=rsc1: -mpwr} \
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81 %{mcpu=rs64a: -mppc} \
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82 %{mcpu=601: -m601} \
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83 %{mcpu=602: -mppc} \
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84 %{mcpu=603: -m603} \
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85 %{mcpu=603e: -m603} \
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86 %{mcpu=604: -m604} \
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87 %{mcpu=604e: -m604} \
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88 %{mcpu=620: -m620} \
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89 %{mcpu=630: -m620}"
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90
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91 #undef ASM_DEFAULT_SPEC
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92 #define ASM_DEFAULT_SPEC "-mcom"
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93
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94 #undef TARGET_OS_CPP_BUILTINS
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95 #define TARGET_OS_CPP_BUILTINS() \
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96 do \
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97 { \
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98 builtin_define ("_AIX43"); \
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99 TARGET_OS_AIX_CPP_BUILTINS (); \
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100 } \
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101 while (0)
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102
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103 #undef CPP_SPEC
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104 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\
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105 %{ansi: -D_ANSI_C_SOURCE}\
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106 %{maix64: -D__64BIT__}\
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107 %{mpe: -I/usr/lpp/ppe.poe/include}\
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108 %{pthread: -D_THREAD_SAFE}"
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109
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110 /* The GNU C++ standard library requires that these macros be
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111 defined. */
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112 #undef CPLUSPLUS_CPP_SPEC
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113 #define CPLUSPLUS_CPP_SPEC \
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114 "-D_ALL_SOURCE \
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115 %{maix64: -D__64BIT__} \
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116 %{mpe: -I/usr/lpp/ppe.poe/include} \
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117 %{pthread: -D_THREAD_SAFE}"
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118
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119 #undef TARGET_DEFAULT
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120 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
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121
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122 #undef PROCESSOR_DEFAULT
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123 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
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124
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125 /* AIX does not support Altivec. */
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126 #undef TARGET_ALTIVEC
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127 #define TARGET_ALTIVEC 0
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128 #undef TARGET_ALTIVEC_ABI
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129 #define TARGET_ALTIVEC_ABI 0
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130
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131 /* Define this macro as a C expression for the initializer of an
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132 array of string to tell the driver program which options are
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133 defaults for this target and thus do not need to be handled
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134 specially when using `MULTILIB_OPTIONS'.
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135
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136 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
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137 the target makefile fragment or if none of the options listed in
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138 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
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139
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140 #undef MULTILIB_DEFAULTS
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141 #define MULTILIB_DEFAULTS { "mcpu=common" }
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142
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143 #undef LIB_SPEC
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144 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
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145 %{p:-L/lib/profiled -L/usr/lib/profiled}\
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146 %{!maix64:%{!shared:%{g*:-lg}}}\
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147 %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
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148 %{pthread:-L/usr/lib/threads -lpthreads -lc_r /usr/lib/libc.a}\
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149 %{!pthread:-lc}"
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150
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151 #undef LINK_SPEC
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152 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
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153 %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
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154 %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
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155 %{mpe:-binitfini:poe_remote_main}"
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156
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157 #undef STARTFILE_SPEC
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158 #define STARTFILE_SPEC "%{!shared:\
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159 %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
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160 %{!maix64:\
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161 %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
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162 %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
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163
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164 /* AIX 4.3 typedefs ptrdiff_t as "long" while earlier releases used "int". */
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165
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166 #undef PTRDIFF_TYPE
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167 #define PTRDIFF_TYPE "long int"
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168
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169 /* AIX 4 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
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170 and "cror 31,31,31" for POWER architecture. */
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171
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172 #undef RS6000_CALL_GLUE
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173 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
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174
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175 /* AIX 4.2 and above provides initialization and finalization function
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176 support from linker command line. */
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177 #undef HAS_INIT_SECTION
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178 #define HAS_INIT_SECTION
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179
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180 #undef LD_INIT_SWITCH
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181 #define LD_INIT_SWITCH "-binitfini"
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182
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183 /* The IBM AIX 4.x assembler doesn't support forward references in
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184 .set directives. We handle this by deferring the output of .set
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185 directives to the end of the compilation unit. */
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186 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) true
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187
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188 /* This target uses the aix64.opt file. */
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189 #define TARGET_USES_AIX64_OPT 1
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