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1 /* Definitions of target machine needed for option handling for GNU compiler,
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2 for IBM RS/6000.
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131
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3 Copyright (C) 2010-2018 Free Software Foundation, Inc.
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111
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4 Contributed by Michael Meissner (meissner@linux.vnet.ibm.com)
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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_OPTS_H
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28 #define RS6000_OPTS_H
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29
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30 /* Processor type. Order must match cpu attribute in MD file. */
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31 enum processor_type
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32 {
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33 PROCESSOR_PPC601,
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34 PROCESSOR_PPC603,
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35 PROCESSOR_PPC604,
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36 PROCESSOR_PPC604e,
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37 PROCESSOR_PPC620,
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38 PROCESSOR_PPC630,
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39
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40 PROCESSOR_PPC750,
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41 PROCESSOR_PPC7400,
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42 PROCESSOR_PPC7450,
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43
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44 PROCESSOR_PPC403,
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45 PROCESSOR_PPC405,
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46 PROCESSOR_PPC440,
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47 PROCESSOR_PPC476,
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48
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49 PROCESSOR_PPC8540,
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50 PROCESSOR_PPC8548,
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51 PROCESSOR_PPCE300C2,
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52 PROCESSOR_PPCE300C3,
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53 PROCESSOR_PPCE500MC,
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54 PROCESSOR_PPCE500MC64,
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55 PROCESSOR_PPCE5500,
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56 PROCESSOR_PPCE6500,
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57
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58 PROCESSOR_POWER4,
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59 PROCESSOR_POWER5,
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60 PROCESSOR_POWER6,
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61 PROCESSOR_POWER7,
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62 PROCESSOR_POWER8,
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63 PROCESSOR_POWER9,
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64
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65 PROCESSOR_RS64A,
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66 PROCESSOR_MPCCORE,
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67 PROCESSOR_CELL,
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68 PROCESSOR_PPCA2,
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69 PROCESSOR_TITAN
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70 };
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71
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72
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73 /* FP processor type. */
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74 enum fpu_type_t
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75 {
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76 FPU_NONE, /* No FPU */
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77 FPU_SF_LITE, /* Limited Single Precision FPU */
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78 FPU_DF_LITE, /* Limited Double Precision FPU */
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79 FPU_SF_FULL, /* Full Single Precision FPU */
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80 FPU_DF_FULL /* Full Double Single Precision FPU */
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81 };
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82
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83
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84 /* Types of costly dependences. */
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85 enum rs6000_dependence_cost
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86 {
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87 max_dep_latency = 1000,
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88 no_dep_costly,
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89 all_deps_costly,
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90 true_store_to_load_dep_costly,
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91 store_to_load_dep_costly
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92 };
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93
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94 /* Types of nop insertion schemes in sched target hook sched_finish. */
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95 enum rs6000_nop_insertion
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96 {
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97 sched_finish_regroup_exact = 1000,
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98 sched_finish_pad_groups,
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99 sched_finish_none
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100 };
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101
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102 /* Dispatch group termination caused by an insn. */
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103 enum group_termination
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104 {
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105 current_group,
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106 previous_group
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107 };
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108
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109 /* Enumeration to give which calling sequence to use. */
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110 enum rs6000_abi {
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111 ABI_NONE,
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112 ABI_AIX, /* IBM's AIX, or Linux ELFv1 */
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113 ABI_ELFv2, /* Linux ELFv2 ABI */
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114 ABI_V4, /* System V.4/eabi */
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115 ABI_DARWIN /* Apple's Darwin (OS X kernel) */
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116 };
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117
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118 /* Small data support types. */
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119 enum rs6000_sdata_type {
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120 SDATA_NONE, /* No small data support. */
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121 SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */
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122 SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */
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123 SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */
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124 };
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125
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126 /* Type of traceback to use. */
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127 enum rs6000_traceback_type {
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128 traceback_default = 0,
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129 traceback_none,
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130 traceback_part,
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131 traceback_full
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132 };
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133
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134 /* Code model for 64-bit linux.
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135 small: 16-bit toc offsets.
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136 medium: 32-bit toc offsets, static data and code within 2G of TOC pointer.
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137 large: 32-bit toc offsets, no limit on static data and code. */
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138 enum rs6000_cmodel {
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139 CMODEL_SMALL,
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140 CMODEL_MEDIUM,
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141 CMODEL_LARGE
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142 };
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143
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144 /* Describe which vector unit to use for a given machine mode. The
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145 VECTOR_MEM_* and VECTOR_UNIT_* macros assume that Altivec, VSX, and
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146 P8_VECTOR are contiguous. */
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147 enum rs6000_vector {
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148 VECTOR_NONE, /* Type is not a vector or not supported */
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149 VECTOR_ALTIVEC, /* Use altivec for vector processing */
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150 VECTOR_VSX, /* Use VSX for vector processing */
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151 VECTOR_P8_VECTOR, /* Use ISA 2.07 VSX for vector processing */
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152 VECTOR_PAIRED, /* Use paired floating point for vectors */
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153 VECTOR_SPE, /* Use SPE for vector processing */
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154 VECTOR_OTHER /* Some other vector unit */
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155 };
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156
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157 /* Where to get the canary for the stack protector. */
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158 enum stack_protector_guard {
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159 SSP_TLS, /* per-thread canary in TLS block */
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160 SSP_GLOBAL /* global canary */
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161 };
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162
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163 /* No enumeration is defined to index the -mcpu= values (entries in
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164 processor_target_table), with the type int being used instead, but
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165 we need to distinguish the special "native" value. */
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166 #define RS6000_CPU_OPTION_NATIVE -1
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167
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168 #endif
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