#!/bin/sh

# Copyright 2016 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Create runtime_sysinfo.go from gen-sysinfo.go and errno.i.

OUT=tmp-runtime_sysinfo.go

set -e

echo 'package runtime' > ${OUT}

# Get all the consts and types, skipping ones which could not be
# represented in Go and ones which we need to rewrite.  We also skip
# function declarations, as we don't need them here.  All the symbols
# will all have a leading underscore.
grep -v '^// ' gen-sysinfo.go | \
  grep -v '^func' | \
  grep -v '^type _timeval ' | \
  grep -v '^type _timespec_t ' | \
  grep -v '^type _timespec ' | \
  grep -v '^type _epoll_' | \
  grep -v 'in6_addr' | \
  grep -v 'sockaddr_in6' | \
  sed -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1timeval\2/g' \
      -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1timespec\2/g' \
      -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1timespec\2/g' \
    >> ${OUT}

# The time structures need special handling: we need to name the
# types, so that we can cast integers to the right types when
# assigning to the structures.
timeval=`grep '^type _timeval ' gen-sysinfo.go`
timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
echo "type timeval_sec_t $timeval_sec" >> ${OUT}
echo "type timeval_usec_t $timeval_usec" >> ${OUT}
echo $timeval | \
  sed -e 's/type _timeval /type timeval /' \
      -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timeval_sec_t/' \
      -e 's/tv_usec *[a-zA-Z0-9_]*/tv_usec timeval_usec_t/' >> ${OUT}
timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
if test "$timespec" = ""; then
  # IRIX 6.5 has __timespec instead.
  timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
fi
timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
echo "type timespec_sec_t $timespec_sec" >> ${OUT}
echo "type timespec_nsec_t $timespec_nsec" >> ${OUT}
echo $timespec | \
  sed -e 's/^type ___timespec /type timespec /' \
      -e 's/^type _timespec /type timespec /' \
      -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timespec_sec_t/' \
      -e 's/tv_nsec *[a-zA-Z0-9_]*/tv_nsec timespec_nsec_t/' >> ${OUT}
echo >> ${OUT}
echo "func (ts *timespec) set_sec(x int64) {" >> ${OUT}
echo "	ts.tv_sec = timespec_sec_t(x)" >> ${OUT}
echo "}" >> ${OUT}
echo >> ${OUT}
echo "func (ts *timespec) set_nsec(x int32) {" >> ${OUT}
echo "	ts.tv_nsec = timespec_nsec_t(x)" >> ${OUT}
echo "}" >> ${OUT}

# The semt structure, for Solaris.
grep '^type _sem_t ' gen-sysinfo.go | \
    sed -e 's/_sem_t/semt/' >> ${OUT}

# Solaris 2 needs _u?pad128_t, but its default definition in terms of long
# double is commented by -fdump-go-spec.
if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
  echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
fi
if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
  echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
fi

# The Solaris 11 Update 1 _zone_net_addr_t struct.
grep '^type _zone_net_addr_t ' gen-sysinfo.go | \
    sed -e 's/_in6_addr/[16]byte/' \
    >> ${OUT}

# The Solaris 12 _flow_arp_desc_t struct.
grep '^type _flow_arp_desc_t ' gen-sysinfo.go | \
    sed -e 's/_in6_addr_t/[16]byte/g' \
    >> ${OUT}

# The Solaris 12 _flow_l3_desc_t struct.
grep '^type _flow_l3_desc_t ' gen-sysinfo.go | \
    sed -e 's/_in6_addr_t/[16]byte/g' \
    >> ${OUT}

# The Solaris 12 _mac_ipaddr_t struct.
grep '^type _mac_ipaddr_t ' gen-sysinfo.go | \
    sed -e 's/_in6_addr_t/[16]byte/g' \
    >> ${OUT}

# The Solaris 12 _mactun_info_t struct.
grep '^type _mactun_info_t ' gen-sysinfo.go | \
    sed -e 's/_in6_addr_t/[16]byte/g' \
    >> ${OUT}