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 # The time structures need special handling: we need to name the
  34 # types, so that we can cast integers to the right types when
  35 # assigning to the structures.
  36 timeval=`grep '^type _timeval ' gen-sysinfo.go`
  37 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  38 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
  39 echo "type timeval_sec_t $timeval_sec" >> ${OUT}
  40 echo "type timeval_usec_t $timeval_usec" >> ${OUT}
  41 echo $timeval | \
  42   sed -e 's/type _timeval /type timeval /' \
  43       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timeval_sec_t/' \
  44       -e 's/tv_usec *[a-zA-Z0-9_]*/tv_usec timeval_usec_t/' >> ${OUT}
  45 echo >> ${OUT}
  46 echo "func (tv *timeval) set_usec(x int32) {" >> ${OUT}
  47 echo "  tv.tv_usec = timeval_usec_t(x)" >> ${OUT}
  48 echo "}" >> ${OUT}
  49
  50 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
  51 if test "$timespec" = ""; then
  52   # IRIX 6.5 has __timespec instead.
  53   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
  54 fi
  55 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  56 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
  57 echo "type timespec_sec_t $timespec_sec" >> ${OUT}
  58 echo "type timespec_nsec_t $timespec_nsec" >> ${OUT}
  59 echo $timespec | \
  60   sed -e 's/^type ___timespec /type timespec /' \
  61       -e 's/^type _timespec /type timespec /' \
  62       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timespec_sec_t/' \
  63       -e 's/tv_nsec *[a-zA-Z0-9_]*/tv_nsec timespec_nsec_t/' >> ${OUT}
  64 echo >> ${OUT}
  65 echo "func (ts *timespec) set_sec(x int64) {" >> ${OUT}
  66 echo "  ts.tv_sec = timespec_sec_t(x)" >> ${OUT}
  67 echo "}" >> ${OUT}
  68 echo >> ${OUT}
  69 echo "func (ts *timespec) set_nsec(x int32) {" >> ${OUT}
  70 echo "  ts.tv_nsec = timespec_nsec_t(x)" >> ${OUT}
  71 echo "}" >> ${OUT}
  72
  73 # Define the epollevent struct.  This needs special attention because
  74 # the C definition uses a union and is sometimes packed.
  75 if grep '^const _epoll_data_offset ' ${OUT} >/dev/null 2>&1; then
  76   val=`grep '^const _epoll_data_offset ' ${OUT} | sed -e 's/const _epoll_data_offset = \(.*\)$/\1/'`
  77   if test "$val" = "4"; then
  78       echo 'type epollevent struct { events uint32; data [8]byte }' >> ${OUT}
  79   elif test "$val" = "8"; then
  80       echo 'type epollevent struct { events uint32; pad [4]byte; data [8]byte }' >> ${OUT}
  81   else
  82       echo 1>&2 "unknown epoll data offset value ${val}"
  83       exit 1
  84   fi
  85 fi
  86 # Make sure EPOLLET is positive.
  87 if grep '^const _EPOLLET = [0-9]' gen-sysinfo.go > /dev/null 2>&1; then
  88   echo "const _EPOLLETpos = _EPOLLET" >> ${OUT}
  89 else
  90   echo "const _EPOLLETpos = 0x80000000" >> ${OUT}
  91 fi
  92 # Make sure EPOLLRDHUP and EPOLL_CLOEXEC are defined.
  93 if ! grep '^const _EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
  94   echo "const _EPOLLRDHUP = 0x2000" >> ${OUT}
  95 fi
  96 if ! grep '^const _EPOLL_CLOEXEC' ${OUT} >/dev/null 2>&1; then
  97   echo "const _EPOLL_CLOEXEC = 02000000" >> ${OUT}
  98 fi
  99
 100 # The semt structure, for Solaris.
 101 grep '^type _sem_t ' gen-sysinfo.go | \
 102     sed -e 's/_sem_t/semt/' >> ${OUT}
 103
 104 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 105 # double is commented by -fdump-go-spec.
 106 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 107   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 108 fi
 109 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 110   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 111 fi
 112
 113 # The Solaris 11 Update 1 _zone_net_addr_t struct.
 114 grep '^type _zone_net_addr_t ' gen-sysinfo.go | \
 115     sed -e 's/_in6_addr/[16]byte/' \
 116     >> ${OUT}
 117
 118 # The Solaris 12 _flow_arp_desc_t struct.
 119 grep '^type _flow_arp_desc_t ' gen-sysinfo.go | \
 120     sed -e 's/_in6_addr_t/[16]byte/g' \
 121     >> ${OUT}
 122
 123 # The Solaris 12 _flow_l3_desc_t struct.
 124 grep '^type _flow_l3_desc_t ' gen-sysinfo.go | \
 125     sed -e 's/_in6_addr_t/[16]byte/g' \
 126     >> ${OUT}
 127
 128 # The Solaris 12 _mac_ipaddr_t struct.
 129 grep '^type _mac_ipaddr_t ' gen-sysinfo.go | \
 130     sed -e 's/_in6_addr_t/[16]byte/g' \
 131     >> ${OUT}
 132
 133 # The Solaris 12 _mactun_info_t struct.
 134 grep '^type _mactun_info_t ' gen-sysinfo.go | \
 135     sed -e 's/_in6_addr_t/[16]byte/g' \
 136     >> ${OUT}
 137
 138 # The Solaris port_event_t struct.
 139 grep '^type _port_event_t ' gen-sysinfo.go | \
 140     sed -e s'/_port_event_t/portevent/' \
 141     >> ${OUT}
 142
 143 # The *BSD kevent struct.
 144 grep '^type _kevent ' gen-sysinfo.go | \
 145     sed -e s'/_kevent/keventt/' \
 146       -e 's/ udata [^;}]*/ udata *byte/' \
 147     >> ${OUT}