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 # The time structures need special handling: we need to name the
  40 # types, so that we can cast integers to the right types when
  41 # assigning to the structures.
  42 timeval=`grep '^type _timeval ' gen-sysinfo.go`
  43 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  44 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
  45 echo "type timeval_sec_t $timeval_sec" >> ${OUT}
  46 echo "type timeval_usec_t $timeval_usec" >> ${OUT}
  47 echo $timeval | \
  48   sed -e 's/type _timeval /type timeval /' \
  49       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timeval_sec_t/' \
  50       -e 's/tv_usec *[a-zA-Z0-9_]*/tv_usec timeval_usec_t/' >> ${OUT}
  51 echo >> ${OUT}
  52 echo "func (tv *timeval) set_usec(x int32) {" >> ${OUT}
  53 echo "  tv.tv_usec = timeval_usec_t(x)" >> ${OUT}
  54 echo "}" >> ${OUT}
  55
  56 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
  57 if test "$timespec" = ""; then
  58   # IRIX 6.5 has __timespec instead.
  59   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
  60 fi
  61 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  62 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
  63 echo "type timespec_sec_t $timespec_sec" >> ${OUT}
  64 echo "type timespec_nsec_t $timespec_nsec" >> ${OUT}
  65 echo $timespec | \
  66   sed -e 's/^type ___timespec /type timespec /' \
  67       -e 's/^type _timespec /type timespec /' \
  68       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timespec_sec_t/' \
  69       -e 's/tv_nsec *[a-zA-Z0-9_]*/tv_nsec timespec_nsec_t/' >> ${OUT}
  70 echo >> ${OUT}
  71 echo "func (ts *timespec) set_sec(x int64) {" >> ${OUT}
  72 echo "  ts.tv_sec = timespec_sec_t(x)" >> ${OUT}
  73 echo "}" >> ${OUT}
  74 echo >> ${OUT}
  75 echo "func (ts *timespec) set_nsec(x int32) {" >> ${OUT}
  76 echo "  ts.tv_nsec = timespec_nsec_t(x)" >> ${OUT}
  77 echo "}" >> ${OUT}
  78
  79 # Define the epollevent struct.  This needs special attention because
  80 # the C definition uses a union and is sometimes packed.
  81 if grep '^const _epoll_data_offset ' ${OUT} >/dev/null 2>&1; then
  82   val=`grep '^const _epoll_data_offset ' ${OUT} | sed -e 's/const _epoll_data_offset = \(.*\)$/\1/'`
  83   if test "$val" = "4"; then
  84       echo 'type epollevent struct { events uint32; data [8]byte }' >> ${OUT}
  85   elif test "$val" = "8"; then
  86       echo 'type epollevent struct { events uint32; pad [4]byte; data [8]byte }' >> ${OUT}
  87   else
  88       echo 1>&2 "unknown epoll data offset value ${val}"
  89       exit 1
  90   fi
  91 fi
  92 # Make sure EPOLLET is positive.
  93 if grep '^const _EPOLLET = [0-9]' gen-sysinfo.go > /dev/null 2>&1; then
  94   echo "const _EPOLLETpos = _EPOLLET" >> ${OUT}
  95 else
  96   echo "const _EPOLLETpos = 0x80000000" >> ${OUT}
  97 fi
  98 # Make sure EPOLLRDHUP and EPOLL_CLOEXEC are defined.
  99 if ! grep '^const _EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
 100   echo "const _EPOLLRDHUP = 0x2000" >> ${OUT}
 101 fi
 102 if ! grep '^const _EPOLL_CLOEXEC' ${OUT} >/dev/null 2>&1; then
 103   echo "const _EPOLL_CLOEXEC = 02000000" >> ${OUT}
 104 fi
 105
 106 # AIX 7.1 is a 64 bits value for _FCLOEXEC (referenced by O_CLOEXEC)
 107 # which leads to a constant overflow when using O_CLOEXEC in some
 108 # go code. Issue wan not present in 6.1 (no O_CLOEXEC) and is no
 109 # more present in 7.2 (_FCLOEXEC is a 32 bit value).
 110 if test "${GOOS}" = "aix" && `oslevel | grep -q "^7.1"`; then
 111     sed -e 's/const __FCLOEXEC = .*/const __FCLOEXEC = 0/' ${OUT} > ${OUT}-2
 112     mv ${OUT}-2 ${OUT}
 113 fi
 114
 115 # Make sure _MAP_FAILED is defined.
 116 if ! grep '^const _MAP_FAILED =' gen-sysinfo.go > /dev/null 2>&1; then
 117   echo "const _MAP_FAILED = ^uintptr(0)" >> ${OUT}
 118 fi
 119 # Make sure _MAP_ANON is defined.
 120 if ! grep '^const _MAP_ANON =' gen-sysinfo.go > /dev/null 2>&1; then
 121   if grep '^const _MAP_ANONYMOUS ' gen-sysinfo.go > /dev/null 2>&1; then
 122     echo "const _MAP_ANON = _MAP_ANONYMOUS" >> ${OUT}
 123   else
 124     echo "const _MAP_ANON = 0" >> ${OUT}
 125   fi
 126 fi
 127 # Make sure _MADV_DONTNEED is defined.
 128 if ! grep '^const _MADV_DONTNEED =' gen-sysinfo.go > /dev/null 2>&1; then
 129   echo "const _MADV_DONTNEED = 0" >> ${OUT}
 130 fi
 131 # Make sure _MADV_FREE is defined.
 132 if ! grep '^const _MADV_FREE =' gen-sysinfo.go > /dev/null 2>&1; then
 133   echo "const _MADV_FREE = 0" >> ${OUT}
 134 fi
 135 # Make sure _MADV_HUGEPAGE is defined.
 136 if ! grep '^const _MADV_HUGEPAGE =' gen-sysinfo.go > /dev/null 2>&1; then
 137   echo "const _MADV_HUGEPAGE = 0" >> ${OUT}
 138 fi
 139 # Make sure _MADV_NOHUGEPAGE is defined.
 140 if ! grep '^const _MADV_NOHUGEPAGE =' gen-sysinfo.go > /dev/null 2>&1; then
 141   echo "const _MADV_NOHUGEPAGE = 0" >> ${OUT}
 142 fi
 143
 144 # The semt structure, for Solaris.
 145 grep '^type _sem_t ' gen-sysinfo.go | \
 146     sed -e 's/_sem_t/semt/' >> ${OUT}
 147
 148 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 149 # double is commented by -fdump-go-spec.
 150 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 151   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 152 fi
 153 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 154   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 155 fi
 156
 157 # The Solaris 11 Update 1 _zone_net_addr_t struct.
 158 grep '^type _zone_net_addr_t ' gen-sysinfo.go | \
 159     sed -e 's/_in6_addr/[16]byte/' \
 160     >> ${OUT}
 161
 162 # The Solaris 12 _flow_arp_desc_t struct.
 163 grep '^type _flow_arp_desc_t ' gen-sysinfo.go | \
 164     sed -e 's/_in6_addr_t/[16]byte/g' \
 165     >> ${OUT}
 166
 167 # The Solaris 12 _flow_l3_desc_t struct.
 168 grep '^type _flow_l3_desc_t ' gen-sysinfo.go | \
 169     sed -e 's/_in6_addr_t/[16]byte/g' \
 170     >> ${OUT}
 171
 172 # The Solaris 12 _mac_ipaddr_t struct.
 173 grep '^type _mac_ipaddr_t ' gen-sysinfo.go | \
 174     sed -e 's/_in6_addr_t/[16]byte/g' \
 175     >> ${OUT}
 176
 177 # The Solaris 12 _mactun_info_t struct.
 178 grep '^type _mactun_info_t ' gen-sysinfo.go | \
 179     sed -e 's/_in6_addr_t/[16]byte/g' \
 180     >> ${OUT}
 181
 182 # The Solaris port_event_t struct.
 183 grep '^type _port_event_t ' gen-sysinfo.go | \
 184     sed -e s'/_port_event_t/portevent/' \
 185     >> ${OUT}
 186
 187 # The *BSD kevent struct.
 188 grep '^type _kevent ' gen-sysinfo.go | \
 189     sed -e s'/_kevent/keventt/' \
 190       -e 's/ udata [^;}]*/ udata *byte/' \
 191     >> ${OUT}