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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 # - int64align: alignment of int64 type in bytes
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18 # - maxalign: maximum alignment of values of Go types in bytes
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19 # - minframesize: size of smallest possible function frame in bytes
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20 # (not currently used, may never be used)
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21 # - pcquantum: minimum size of a single instruction in bytes
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22 # - ptrsize: size of a pointer in bytes
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23
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24 if test $# -ne 2; then
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25 echo 1>&2 "usage: goarch <goarch> <keyword>"
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26 exit 1
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27 fi
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28
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29 goarch=$1
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30 keyword=$2
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31
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32 # Default values
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33 bigendian=false
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34 cachelinesize=64
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35 defaultphyspagesize=4096
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36 family=unknown
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37 int64align=8
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38 maxalign=8
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39 minframesize=0
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40 pcquantum=1
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41 ptrsize=8
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42
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43 case $goarch in
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44 386)
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45 family=I386
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46 int64align=4
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47 maxalign=4
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48 ptrsize=4
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49 ;;
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50 alpha)
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51 family=ALPHA
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52 defaultphyspagesize=8192
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53 pcquantum=4
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54 ;;
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55 amd64)
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56 family=AMD64
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57 ;;
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58 amd64p32)
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59 family=AMD64
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60 ptrsize=4
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61 ;;
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62 arm | armbe)
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63 family=ARM
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64 cachelinesize=32
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65 minframesize=4
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66 pcquantum=4
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67 ptrsize=4
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68 case $goarch in
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69 *be)
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70 bigendian=true
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71 ;;
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72 esac
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73 ;;
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74 arm64 | arm64be)
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75 family=ARM64
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76 cachelinesize=32
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77 defaultphyspagesize=65536
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78 minframesize=8
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79 pcquantum=4
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80 case $goarch in
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81 *be)
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82 bigendian=true
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83 ;;
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84 esac
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85 ;;
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86 ia64)
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87 family=IA64
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88 cachelinesize=128
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89 defaultphyspagesize=65536
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90 ;;
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91 m68k)
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92 family=M68K
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93 bigendian=true
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94 cachelinesize=16
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95 int64align=2
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96 maxalign=2
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97 pcquantum=4
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98 ptrsize=4
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99 ;;
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100 mips | mipsle | mips64p32 | mips64p32le)
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101 family=MIPS
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102 bigendian=true
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103 cachelinesize=32
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104 defaultphyspagesize=16384
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105 minframesize=4
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106 pcquantum=4
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107 ptrsize=4
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108 case $goarch in
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109 *le)
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110 bigendian=false
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111 ;;
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112 esac
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113 ;;
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114 mips64 | mips64le)
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115 family=MIPS64
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116 bigendian=true
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117 cachelinesize=32
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118 defaultphyspagesize=16384
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119 minframesize=8
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120 pcquantum=4
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121 case $goarch in
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122 *le)
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123 bigendian=false
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124 ;;
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125 esac
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126 ;;
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127 nios2)
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128 family=NIOS2
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129 cachelinesize=32
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130 minframesize=16
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131 pcquantum=4
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132 ptrsize=4
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133 ;;
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134 ppc)
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135 family=PPC
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136 bigendian=true
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137 defaultphyspagesize=65536
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138 minframesize=32
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139 pcquantum=4
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140 ptrsize=4
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141 ;;
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142 ppc64 | ppc64le)
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143 family=PPC64
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144 bigendian=true
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145 defaultphyspagesize=65536
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146 minframesize=32
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147 pcquantum=4
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148 case $goarch in
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149 *le)
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150 bigendian=false
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151 ;;
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152 esac
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153 ;;
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154 riscv)
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155 family=RISCV
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156 pcquantum=2
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157 ptrsize=4
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158 ;;
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159 riscv64)
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160 family=RISCV64
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161 pcquantum=2
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162 ;;
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163 s390)
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164 family=S390
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165 bigendian=true
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166 cachelinesize=256
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167 minframesize=4
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168 pcquantum=2
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169 ptrsize=4
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170 ;;
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171 s390x)
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172 family=S390X
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173 bigendian=true
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174 cachelinesize=256
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175 minframesize=8
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176 pcquantum=2
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177 ;;
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178 sh | shbe)
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179 family=SH
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180 cachelinesize=16
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181 int64align=4
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182 minframesize=4
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183 pcquantum=2
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184 ptrsize=4
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185 case $goarch in
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186 *be)
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187 bigendian=true
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188 ;;
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189 esac
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190 ;;
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191 sparc)
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192 family=SPARC
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193 bigendian=true
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194 defaultphyspagesize=8192
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195 pcquantum=4
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196 ptrsize=4
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197 ;;
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198 sparc64)
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199 family=SPARC64
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200 bigendian=true
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201 defaultphyspagesize=8192
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202 pcquantum=4
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203 ;;
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204 wasm)
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205 family=WASM
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206 defaultphyspagesize=65536
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207 ;;
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208 *)
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209 echo 1>&2 "unrecognized goarch value \"$goarch\""
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210 exit 1
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211 ;;
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212 esac
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213
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214 if test "$family" = "unknown"; then
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215 echo 1>&2 "internal error: no family for goarch value \"$goarch\""
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216 exit 1
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217 fi
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218
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219 case $keyword in
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220 bigendian)
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221 echo $bigendian
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222 ;;
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223 cachelinesize)
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224 echo $cachelinesize
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225 ;;
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226 defaultphyspagesize)
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227 echo $defaultphyspagesize
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228 ;;
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229 family)
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230 echo $family
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231 ;;
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232 int64align)
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233 echo $int64align
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234 ;;
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235 maxalign)
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236 echo $maxalign
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237 ;;
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238 minframesize)
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239 echo $minframesize
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240 ;;
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241 pcquantum)
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242 echo $pcquantum
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243 ;;
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244 ptrsize)
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245 echo $ptrsize
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246 ;;
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247 *)
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248 echo 1>&2 "unrecognized keyword \"$keyword\""
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249 exit 1
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250 ;;
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251 esac
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252
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253 exit 0
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