libgo/goarch.sh

   1 #!/bin/sh
   2
   3 # Copyright 2018 The Go Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style
   5 # license that can be found in the LICENSE file.
   6
   7 # Code in Makefile.am will invoke this script with two arguments.
   8 # The first is a GOARCH value.  The second is a keyword.
   9 # The script will print the value of that keyword for that GOARCH.
  10 # Keywords:
  11 # - bigendian: true or false
  12 # - cachelinesize: the cache line size in bytes
  13 #       (for performance only; it's not essential to get this right)
  14 # - defaultphyspagesize: the default physical page size in bytes
  15 #       (not currently used, but maybe some day)
  16 # - family: the processor family, from ALLGOARCHFAMILY in configure.ac
  17 # - int64align: alignment of int64 type in bytes
  18 # - maxalign: maximum alignment of values of Go types in bytes
  19 # - minframesize: size of smallest possible function frame in bytes
  20 #       (not currently used, may never be used)
  21 # - pcquantum: minimum size of a single instruction in bytes
  22 # - ptrsize: size of a pointer in bytes
  23
  24 if test $# -ne 2; then
  25     echo 1>&2 "usage: goarch <goarch> <keyword>"
  26     exit 1
  27 fi
  28
  29 goarch=$1
  30 keyword=$2
  31
  32 # Default values
  33 bigendian=false
  34 cachelinesize=64
  35 defaultphyspagesize=4096
  36 family=unknown
  37 int64align=8
  38 maxalign=8
  39 minframesize=0
  40 pcquantum=1
  41 ptrsize=8
  42 stackalign=8
  43
  44 case $goarch in
  45     386)
  46         family=I386
  47         int64align=4
  48         maxalign=4
  49         ptrsize=4
  50         stackalign=4
  51         ;;
  52     alpha)
  53         family=ALPHA
  54         defaultphyspagesize=8192
  55         pcquantum=4
  56         ;;
  57     amd64)
  58         family=AMD64
  59         ;;
  60     amd64p32)
  61         family=AMD64
  62         ptrsize=4
  63         stackalign=4
  64         ;;
  65     arm | armbe)
  66         family=ARM
  67         cachelinesize=32
  68         minframesize=4
  69         pcquantum=4
  70         ptrsize=4
  71         stackalign=4
  72         case $goarch in
  73             *be)
  74                 bigendian=true
  75                 ;;
  76         esac
  77         ;;
  78     arm64 | arm64be)
  79         family=ARM64
  80         cachelinesize=32
  81         defaultphyspagesize=65536
  82         minframesize=8
  83         pcquantum=4
  84         stackalign=16
  85         case $goarch in
  86             *be)
  87                 bigendian=true
  88                 ;;
  89         esac
  90         ;;
  91     ia64)
  92         family=IA64
  93         cachelinesize=128
  94         defaultphyspagesize=65536
  95         ;;
  96     m68k)
  97         family=M68K
  98         bigendian=true
  99         cachelinesize=16
 100         int64align=2
 101         maxalign=2
 102         pcquantum=4
 103         ptrsize=4
 104         stackalign=4
 105         ;;
 106     mips | mipsle | mips64p32 | mips64p32le)
 107         family=MIPS
 108         bigendian=true
 109         cachelinesize=32
 110         defaultphyspagesize=16384
 111         minframesize=4
 112         pcquantum=4
 113         ptrsize=4
 114         stackalign=4
 115         case $goarch in
 116             *le)
 117                 bigendian=false
 118                 ;;
 119         esac
 120         ;;
 121     mips64 | mips64le)
 122         family=MIPS64
 123         bigendian=true
 124         cachelinesize=32
 125         defaultphyspagesize=16384
 126         minframesize=8
 127         pcquantum=4
 128         case $goarch in
 129             *le)
 130                 bigendian=false
 131                 ;;
 132         esac
 133         ;;
 134     nios2)
 135         family=NIOS2
 136         cachelinesize=32
 137         minframesize=16
 138         pcquantum=4
 139         ptrsize=4
 140         stackalign=4
 141         ;;
 142     ppc)
 143         family=PPC
 144         bigendian=true
 145         defaultphyspagesize=65536
 146         minframesize=32
 147         pcquantum=4
 148         ptrsize=4
 149         stackalign=4
 150         ;;
 151     ppc64 | ppc64le)
 152         family=PPC64
 153         bigendian=true
 154         defaultphyspagesize=65536
 155         minframesize=32
 156         pcquantum=4
 157         stackalign=16
 158         case $goarch in
 159             *le)
 160                 bigendian=false
 161                 ;;
 162         esac
 163         ;;
 164     riscv)
 165         family=RISCV
 166         pcquantum=2
 167         ptrsize=4
 168         stackalign=4
 169         ;;
 170     riscv64)
 171         family=RISCV64
 172         pcquantum=2
 173         ;;
 174     s390)
 175         family=S390
 176         bigendian=true
 177         cachelinesize=256
 178         minframesize=4
 179         pcquantum=2
 180         ptrsize=4
 181         stackalign=4
 182         ;;
 183     s390x)
 184         family=S390X
 185         bigendian=true
 186         cachelinesize=256
 187         minframesize=8
 188         pcquantum=2
 189         ;;
 190     sh | shbe)
 191         family=SH
 192         cachelinesize=16
 193         int64align=4
 194         minframesize=4
 195         pcquantum=2
 196         ptrsize=4
 197         stackalign=4
 198         case $goarch in
 199             *be)
 200                 bigendian=true
 201                 ;;
 202         esac
 203         ;;
 204     sparc)
 205         family=SPARC
 206         bigendian=true
 207         defaultphyspagesize=8192
 208         pcquantum=4
 209         ptrsize=4
 210         stackalign=4
 211         ;;
 212     sparc64)
 213         family=SPARC64
 214         bigendian=true
 215         defaultphyspagesize=8192
 216         pcquantum=4
 217         ;;
 218     wasm)
 219         family=WASM
 220         defaultphyspagesize=65536
 221         ;;
 222     *)
 223         echo 1>&2 "unrecognized goarch value \"$goarch\""
 224         exit 1
 225         ;;
 226 esac
 227
 228 if test "$family" = "unknown"; then
 229     echo 1>&2 "internal error: no family for goarch value \"$goarch\""
 230     exit 1
 231 fi
 232
 233 case $keyword in
 234     bigendian)
 235         echo $bigendian
 236         ;;
 237     cachelinesize)
 238         echo $cachelinesize
 239         ;;
 240     defaultphyspagesize)
 241         echo $defaultphyspagesize
 242         ;;
 243     family)
 244         echo $family
 245         ;;
 246     int64align)
 247         echo $int64align
 248         ;;
 249     maxalign)
 250         echo $maxalign
 251         ;;
 252     minframesize)
 253         echo $minframesize
 254         ;;
 255     pcquantum)
 256         echo $pcquantum
 257         ;;
 258     ptrsize)
 259         echo $ptrsize
 260         ;;
 261     stackalign)
 262         echo $stackalign
 263         ;;
 264     *)
 265         echo 1>&2 "unrecognized keyword \"$keyword\""
 266         exit 1
 267         ;;
 268 esac
 269
 270 exit 0