libgo/mkrsysinfo.sh

   1 #!/bin/sh
   2
   3 # Copyright 2016 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 # Create runtime_sysinfo.go from gen-sysinfo.go and errno.i.
   8
   9 OUT=tmp-runtime_sysinfo.go
  10
  11 set -e
  12
  13 echo 'package runtime' > ${OUT}
  14
  15 # Get all the consts and types, skipping ones which could not be
  16 # represented in Go and ones which we need to rewrite.  We also skip
  17 # function declarations, as we don't need them here.  All the symbols
  18 # will all have a leading underscore.
  19 grep -v '^// ' gen-sysinfo.go | \
  20   grep -v '^func' | \
  21   grep -v '^var ' | \
  22   grep -v '^type _timeval ' | \
  23   grep -v '^type _timespec_t ' | \
  24   grep -v '^type _timespec ' | \
  25   grep -v '^type _epoll_' | \
  26   grep -v 'in6_addr' | \
  27   grep -v 'sockaddr_in6' | \
  28   sed -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1timeval\2/g' \
  29       -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1timespec\2/g' \
  30       -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1timespec\2/g' \
  31     >> ${OUT}
  32
  33 # On AIX, the _arpcom struct, is filtered by the above grep sequence, as it as
  34 # a field of type _in6_addr, but other types depend on _arpcom, so we need to
  35 # put it back.
  36 grep '^type _arpcom ' gen-sysinfo.go | \
  37   sed -e 's/_in6_addr/[16]byte/' >> ${OUT}
  38
  39 # Same on Solaris for _mld_hdr_t.
  40 grep '^type _mld_hdr_t ' gen-sysinfo.go | \
  41   sed -e 's/_in6_addr/[16]byte/' >> ${OUT}
  42
  43 # The time structures need special handling: we need to name the
  44 # types, so that we can cast integers to the right types when
  45 # assigning to the structures.
  46 timeval=`grep '^type _timeval ' gen-sysinfo.go`
  47 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  48 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
  49 echo "type timeval_sec_t $timeval_sec" >> ${OUT}
  50 echo "type timeval_usec_t $timeval_usec" >> ${OUT}
  51 echo $timeval | \
  52   sed -e 's/type _timeval /type timeval /' \
  53       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timeval_sec_t/' \
  54       -e 's/tv_usec *[a-zA-Z0-9_]*/tv_usec timeval_usec_t/' >> ${OUT}
  55 echo >> ${OUT}
  56 echo "func (tv *timeval) set_usec(x int32) {" >> ${OUT}
  57 echo "  tv.tv_usec = timeval_usec_t(x)" >> ${OUT}
  58 echo "}" >> ${OUT}
  59
  60 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
  61 if test "$timespec" = ""; then
  62   # IRIX 6.5 has __timespec instead.
  63   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
  64 fi
  65 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  66 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
  67 echo "type timespec_sec_t $timespec_sec" >> ${OUT}
  68 echo "type timespec_nsec_t $timespec_nsec" >> ${OUT}
  69 echo $timespec | \
  70   sed -e 's/^type ___timespec /type timespec /' \
  71       -e 's/^type _timespec /type timespec /' \
  72       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timespec_sec_t/' \
  73       -e 's/tv_nsec *[a-zA-Z0-9_]*/tv_nsec timespec_nsec_t/' >> ${OUT}
  74 echo >> ${OUT}
  75 echo "func (ts *timespec) set_sec(x int64) {" >> ${OUT}
  76 echo "  ts.tv_sec = timespec_sec_t(x)" >> ${OUT}
  77 echo "}" >> ${OUT}
  78 echo >> ${OUT}
  79 echo "func (ts *timespec) set_nsec(x int32) {" >> ${OUT}
  80 echo "  ts.tv_nsec = timespec_nsec_t(x)" >> ${OUT}
  81 echo "}" >> ${OUT}
  82
  83 # Define the epollevent struct.  This needs special attention because
  84 # the C definition uses a union and is sometimes packed.
  85 if grep '^const _epoll_data_offset ' ${OUT} >/dev/null 2>&1; then
  86   val=`grep '^const _epoll_data_offset ' ${OUT} | sed -e 's/const _epoll_data_offset = \(.*\)$/\1/'`
  87   if test "$val" = "4"; then
  88       echo 'type epollevent struct { events uint32; data [8]byte }' >> ${OUT}
  89   elif test "$val" = "8"; then
  90       if test "$GOARCH" = "sparc64" -a "$GOOS" = "linux"; then
  91           echo 'type epollevent struct { events uint32; pad [4]byte; data [8]byte; _align [0]int64 }' >> ${OUT}
  92       else
  93           echo 'type epollevent struct { events uint32; pad [4]byte; data [8]byte }' >> ${OUT}
  94       fi
  95   else
  96       echo 1>&2 "unknown epoll data offset value ${val}"
  97       exit 1
  98   fi
  99 fi
 100 # Make sure EPOLLET is positive.
 101 if grep '^const _EPOLLET = [0-9]' gen-sysinfo.go > /dev/null 2>&1; then
 102   echo "const _EPOLLETpos = _EPOLLET" >> ${OUT}
 103 else
 104   echo "const _EPOLLETpos = 0x80000000" >> ${OUT}
 105 fi
 106 # Make sure EPOLLRDHUP and EPOLL_CLOEXEC are defined.
 107 if ! grep '^const _EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
 108   echo "const _EPOLLRDHUP = 0x2000" >> ${OUT}
 109 fi
 110 if ! grep '^const _EPOLL_CLOEXEC' ${OUT} >/dev/null 2>&1; then
 111   echo "const _EPOLL_CLOEXEC = 02000000" >> ${OUT}
 112 fi
 113
 114 # AIX 7.1 is a 64 bits value for _FCLOEXEC (referenced by O_CLOEXEC)
 115 # which leads to a constant overflow when using O_CLOEXEC in some
 116 # go code. Issue wan not present in 6.1 (no O_CLOEXEC) and is no
 117 # more present in 7.2 (_FCLOEXEC is a 32 bit value).
 118 if test "${GOOS}" = "aix" && `oslevel | grep -q "^7.1"`; then
 119     sed -e 's/const __FCLOEXEC = .*/const __FCLOEXEC = 0/' ${OUT} > ${OUT}-2
 120     mv ${OUT}-2 ${OUT}
 121 fi
 122
 123 # Make sure _MAP_FAILED is defined.
 124 if ! grep '^const _MAP_FAILED =' gen-sysinfo.go > /dev/null 2>&1; then
 125   echo "const _MAP_FAILED = ^uintptr(0)" >> ${OUT}
 126 fi
 127 # Make sure _MAP_ANON is defined.
 128 if ! grep '^const _MAP_ANON =' gen-sysinfo.go > /dev/null 2>&1; then
 129   if grep '^const _MAP_ANONYMOUS ' gen-sysinfo.go > /dev/null 2>&1; then
 130     echo "const _MAP_ANON = _MAP_ANONYMOUS" >> ${OUT}
 131   else
 132     echo "const _MAP_ANON = 0" >> ${OUT}
 133   fi
 134 fi
 135 # Make sure _MADV_DONTNEED is defined.
 136 if ! grep '^const _MADV_DONTNEED =' gen-sysinfo.go > /dev/null 2>&1; then
 137   echo "const _MADV_DONTNEED = 0" >> ${OUT}
 138 fi
 139 # Make sure _MADV_FREE is defined.
 140 if ! grep '^const _MADV_FREE =' gen-sysinfo.go > /dev/null 2>&1; then
 141   echo "const _MADV_FREE = 0" >> ${OUT}
 142 fi
 143 # Make sure _MADV_HUGEPAGE is defined.
 144 if ! grep '^const _MADV_HUGEPAGE =' gen-sysinfo.go > /dev/null 2>&1; then
 145   echo "const _MADV_HUGEPAGE = 0" >> ${OUT}
 146 fi
 147 # Make sure _MADV_NOHUGEPAGE is defined.
 148 if ! grep '^const _MADV_NOHUGEPAGE =' gen-sysinfo.go > /dev/null 2>&1; then
 149   echo "const _MADV_NOHUGEPAGE = 0" >> ${OUT}
 150 fi
 151
 152 # The semt structure, for Solaris.
 153 grep '^type _sem_t ' gen-sysinfo.go | \
 154     sed -e 's/_sem_t/semt/' >> ${OUT}
 155
 156 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 157 # double is commented by -fdump-go-spec.
 158 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 159   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 160 fi
 161 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 162   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 163 fi
 164
 165 # The Solaris 11 Update 1 _zone_net_addr_t struct.
 166 grep '^type _zone_net_addr_t ' gen-sysinfo.go | \
 167     sed -e 's/_in6_addr/[16]byte/' \
 168     >> ${OUT}
 169
 170 # The Solaris 12 _flow_arp_desc_t struct.
 171 grep '^type _flow_arp_desc_t ' gen-sysinfo.go | \
 172     sed -e 's/_in6_addr_t/[16]byte/g' \
 173     >> ${OUT}
 174
 175 # The Solaris 12 _flow_l3_desc_t struct.
 176 grep '^type _flow_l3_desc_t ' gen-sysinfo.go | \
 177     sed -e 's/_in6_addr_t/[16]byte/g' \
 178     >> ${OUT}
 179
 180 # The Solaris 12 _mac_ipaddr_t struct.
 181 grep '^type _mac_ipaddr_t ' gen-sysinfo.go | \
 182     sed -e 's/_in6_addr_t/[16]byte/g' \
 183     >> ${OUT}
 184
 185 # The Solaris 12 _mactun_info_t struct.
 186 grep '^type _mactun_info_t ' gen-sysinfo.go | \
 187     sed -e 's/_in6_addr_t/[16]byte/g' \
 188     >> ${OUT}
 189
 190 # The Solaris port_event_t struct.
 191 grep '^type _port_event_t ' gen-sysinfo.go | \
 192     sed -e s'/_port_event_t/portevent/' \
 193     >> ${OUT}
 194
 195 # The *BSD kevent struct.
 196 grep '^type _kevent ' gen-sysinfo.go | \
 197     sed -e s'/_kevent/keventt/' \
 198       -e 's/ udata [^;}]*/ udata *byte/' \
 199     >> ${OUT}