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1 #!/bin/sh
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2
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3 # Copyright 2018 The Go Authors. All rights reserved.
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4 # Use of this source code is governed by a BSD-style
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5 # license that can be found in the LICENSE file.
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6
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7 # Code in Makefile.am will invoke this script with two arguments.
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8 # The first is a GOARCH value. The second is a keyword.
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9 # The script will print the value of that keyword for that GOARCH.
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10 # Keywords:
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11 # - bigendian: true or false
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12 # - cachelinesize: the cache line size in bytes
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13 # (for performance only; it's not essential to get this right)
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14 # - defaultphyspagesize: the default physical page size in bytes
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15 # (not currently used, but maybe some day)
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16 # - family: the processor family, from ALLGOARCHFAMILY in configure.ac
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17 # - hugepagesize: size of a huge page in bytes
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18 # (used only to decide when to use madvise with MADV_[NO]HUGEPAGE)
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19 # (set to 0 if there are no huge pages)
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20 # - int64align: alignment of int64 type in bytes
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21 # - maxalign: maximum alignment of values of Go types in bytes
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22 # - minframesize: size of smallest possible function frame in bytes
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23 # (not currently used, may never be used)
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24 # - pcquantum: minimum size of a single instruction in bytes
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25 # - ptrsize: size of a pointer in bytes
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26
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27 if test $# -ne 2; then
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28 echo 1>&2 "usage: goarch <goarch> <keyword>"
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29 exit 1
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30 fi
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31
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32 goarch=$1
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33 keyword=$2
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34
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35 # Default values
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36 bigendian=false
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37 cachelinesize=64
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38 defaultphyspagesize=4096
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39 family=unknown
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40 hugepagesize=0
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41 int64align=8
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42 maxalign=8
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43 minframesize=0
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44 pcquantum=1
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45 ptrsize=8
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46
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47 case $goarch in
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48 386)
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49 family=I386
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50 hugepagesize="1 << 21"
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51 int64align=4
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52 maxalign=4
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53 ptrsize=4
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54 ;;
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55 alpha)
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56 family=ALPHA
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57 defaultphyspagesize=8192
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58 pcquantum=4
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59 ;;
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60 amd64)
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61 family=AMD64
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62 hugepagesize="1 << 21"
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63 ;;
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64 amd64p32)
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65 family=AMD64
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66 hugepagesize="1 << 21"
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67 ptrsize=4
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68 ;;
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69 arm | armbe)
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70 family=ARM
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71 cachelinesize=32
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72 minframesize=4
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73 pcquantum=4
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74 ptrsize=4
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75 case $goarch in
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76 *be)
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77 bigendian=true
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78 ;;
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79 esac
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80 ;;
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81 arm64 | arm64be)
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82 family=ARM64
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83 cachelinesize=32
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84 defaultphyspagesize=65536
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85 minframesize=8
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86 pcquantum=4
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87 case $goarch in
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88 *be)
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89 bigendian=true
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90 ;;
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91 esac
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92 ;;
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93 ia64)
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94 family=IA64
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95 cachelinesize=128
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96 defaultphyspagesize=65536
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97 ;;
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98 m68k)
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99 family=M68K
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100 bigendian=true
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101 cachelinesize=16
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102 int64align=2
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103 maxalign=2
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104 pcquantum=4
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105 ptrsize=4
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106 ;;
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107 mips | mipsle | mips64p32 | mips64p32le)
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108 family=MIPS
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109 bigendian=true
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110 cachelinesize=32
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111 defaultphyspagesize=16384
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112 minframesize=4
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113 pcquantum=4
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114 ptrsize=4
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115 case $goarch in
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116 *le)
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117 bigendian=false
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118 ;;
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119 esac
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120 ;;
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121 mips64 | mips64le)
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122 family=MIPS64
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123 bigendian=true
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124 cachelinesize=32
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125 defaultphyspagesize=16384
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126 minframesize=8
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127 pcquantum=4
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128 case $goarch in
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129 *le)
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130 bigendian=false
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131 ;;
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132 esac
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133 ;;
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134 nios2)
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135 family=NIOS2
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136 cachelinesize=32
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137 minframesize=16
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138 pcquantum=4
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139 ptrsize=4
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140 ;;
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141 ppc)
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142 family=PPC
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143 bigendian=true
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144 defaultphyspagesize=65536
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145 minframesize=32
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146 pcquantum=4
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147 ptrsize=4
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148 ;;
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149 ppc64 | ppc64le)
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150 family=PPC64
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151 bigendian=true
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152 defaultphyspagesize=65536
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153 minframesize=32
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154 pcquantum=4
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155 case $goarch in
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156 *le)
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157 bigendian=false
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158 ;;
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159 esac
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160 ;;
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161 riscv)
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162 family=RISCV
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163 pcquantum=2
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164 ptrsize=4
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165 ;;
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166 riscv64)
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167 family=RISCV64
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168 pcquantum=2
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169 ;;
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170 s390)
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171 family=S390
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172 bigendian=true
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173 cachelinesize=256
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174 minframesize=4
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175 pcquantum=2
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176 ptrsize=4
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177 ;;
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178 s390x)
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179 family=S390X
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180 bigendian=true
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181 cachelinesize=256
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182 minframesize=8
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183 pcquantum=2
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184 ;;
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185 sh | shbe)
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186 family=SH
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187 cachelinesize=16
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188 int64align=4
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189 minframesize=4
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190 pcquantum=2
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191 ptrsize=4
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192 case $goarch in
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193 *be)
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194 bigendian=true
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195 ;;
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196 esac
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197 ;;
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198 sparc)
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199 family=SPARC
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200 bigendian=true
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201 defaultphyspagesize=8192
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202 pcquantum=4
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203 ptrsize=4
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204 ;;
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205 sparc64)
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206 family=SPARC64
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207 bigendian=true
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208 defaultphyspagesize=8192
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209 pcquantum=4
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210 ;;
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211 wasm)
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212 family=WASM
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213 defaultphyspagesize=65536
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214 ;;
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215 *)
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216 echo 1>&2 "unrecognized goarch value \"$goarch\""
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217 exit 1
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218 ;;
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219 esac
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220
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221 if test "$family" = "unknown"; then
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222 echo 1>&2 "internal error: no family for goarch value \"$goarch\""
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223 exit 1
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224 fi
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225
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226 case $keyword in
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227 bigendian)
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228 echo $bigendian
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229 ;;
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230 cachelinesize)
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231 echo $cachelinesize
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232 ;;
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233 defaultphyspagesize)
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234 echo $defaultphyspagesize
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235 ;;
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236 family)
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237 echo $family
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238 ;;
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239 hugepagesize)
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240 echo $hugepagesize
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241 ;;
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242 int64align)
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243 echo $int64align
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244 ;;
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245 maxalign)
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246 echo $maxalign
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247 ;;
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248 minframesize)
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249 echo $minframesize
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250 ;;
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251 pcquantum)
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252 echo $pcquantum
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253 ;;
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254 ptrsize)
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255 echo $ptrsize
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256 ;;
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257 *)
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258 echo 1>&2 "unrecognized keyword \"$keyword\""
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259 exit 1
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260 ;;
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261 esac
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262
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263 exit 0
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