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 '^type _*locale[_ ]' | \
  27   grep -v 'in6_addr' | \
  28   grep -v 'sockaddr_in6' | \
  29   sed -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1timeval\2/g' \
  30       -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1timespec\2/g' \
  31       -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1timespec\2/g' \
  32     >> ${OUT}
  33
  34 # The C long type, needed because that is the type that ptrace returns.
  35 sizeof_long=`grep '^const ___SIZEOF_LONG__ = ' gen-sysinfo.go | sed -e 's/.*= //'`
  36 if test "$sizeof_long" = "4"; then
  37   echo "type _C_long int32" >> ${OUT}
  38   echo "type _C_ulong uint32" >> ${OUT}
  39 elif test "$sizeof_long" = "8"; then
  40   echo "type _C_long int64" >> ${OUT}
  41   echo "type _C_ulong uint64" >> ${OUT}
  42 else
  43   echo 1>&2 "mkrsysinfo.sh: could not determine size of long (got $sizeof_long)"
  44   exit 1
  45 fi
  46
  47 # On AIX, the _arpcom struct, is filtered by the above grep sequence, as it as
  48 # a field of type _in6_addr, but other types depend on _arpcom, so we need to
  49 # put it back.
  50 grep '^type _arpcom ' gen-sysinfo.go | \
  51   sed -e 's/_in6_addr/[16]byte/' >> ${OUT}
  52
  53 # Same on Solaris for _mld_hdr_t.
  54 grep '^type _mld_hdr_t ' gen-sysinfo.go | \
  55   sed -e 's/_in6_addr/[16]byte/' >> ${OUT}
  56
  57 # The time structures need special handling: we need to name the
  58 # types, so that we can cast integers to the right types when
  59 # assigning to the structures.
  60 timeval=`grep '^type _timeval ' gen-sysinfo.go`
  61 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  62 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
  63 echo "type timeval_sec_t $timeval_sec" >> ${OUT}
  64 echo "type timeval_usec_t $timeval_usec" >> ${OUT}
  65 echo $timeval | \
  66   sed -e 's/type _timeval /type timeval /' \
  67       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timeval_sec_t/' \
  68       -e 's/tv_usec *[a-zA-Z0-9_]*/tv_usec timeval_usec_t/' >> ${OUT}
  69 echo >> ${OUT}
  70 echo "func (tv *timeval) set_usec(x int32) {" >> ${OUT}
  71 echo "  tv.tv_usec = timeval_usec_t(x)" >> ${OUT}
  72 echo "}" >> ${OUT}
  73
  74 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
  75 if test "$timespec" = ""; then
  76   # IRIX 6.5 has __timespec instead.
  77   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
  78 fi
  79 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
  80 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
  81 echo "type timespec_sec_t $timespec_sec" >> ${OUT}
  82 echo "type timespec_nsec_t $timespec_nsec" >> ${OUT}
  83 echo $timespec | \
  84   sed -e 's/^type ___timespec /type timespec /' \
  85       -e 's/^type _timespec /type timespec /' \
  86       -e 's/tv_sec *[a-zA-Z0-9_]*/tv_sec timespec_sec_t/' \
  87       -e 's/tv_nsec *[a-zA-Z0-9_]*/tv_nsec timespec_nsec_t/' >> ${OUT}
  88 echo >> ${OUT}
  89 echo "func (ts *timespec) setNsec(ns int64) {" >> ${OUT}
  90 echo "  ts.tv_sec = timespec_sec_t(ns / 1e9)" >> ${OUT}
  91 echo "  ts.tv_nsec = timespec_nsec_t(ns % 1e9)" >> ${OUT}
  92 echo "}" >> ${OUT}
  93 echo >> ${OUT}
  94
  95 # Define the epollevent struct.  This needs special attention because
  96 # the C definition uses a union and is sometimes packed.
  97 if grep '^const _epoll_data_offset ' ${OUT} >/dev/null 2>&1; then
  98   val=`grep '^const _epoll_data_offset ' ${OUT} | sed -e 's/const _epoll_data_offset = \(.*\)$/\1/'`
  99   if test "$val" = "4"; then
 100       echo 'type epollevent struct { events uint32; data [8]byte }' >> ${OUT}
 101   elif test "$val" = "8"; then
 102       if test "$GOARCH" = "sparc64" -a "$GOOS" = "linux"; then
 103           echo 'type epollevent struct { events uint32; pad [4]byte; data [8]byte; _align [0]int64 }' >> ${OUT}
 104       else
 105           echo 'type epollevent struct { events uint32; pad [4]byte; data [8]byte }' >> ${OUT}
 106       fi
 107   else
 108       echo 1>&2 "unknown epoll data offset value ${val}"
 109       exit 1
 110   fi
 111 fi
 112 # Make sure EPOLLET is positive.
 113 if grep '^const _EPOLLET = [0-9]' gen-sysinfo.go > /dev/null 2>&1; then
 114   echo "const _EPOLLETpos = _EPOLLET" >> ${OUT}
 115 else
 116   echo "const _EPOLLETpos = 0x80000000" >> ${OUT}
 117 fi
 118 # Make sure EPOLLRDHUP and EPOLL_CLOEXEC are defined.
 119 if ! grep '^const _EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
 120   echo "const _EPOLLRDHUP = 0x2000" >> ${OUT}
 121 fi
 122 if ! grep '^const _EPOLL_CLOEXEC' ${OUT} >/dev/null 2>&1; then
 123   echo "const _EPOLL_CLOEXEC = 02000000" >> ${OUT}
 124 fi
 125
 126 # AIX 7.1 is a 64 bits value for _FCLOEXEC (referenced by O_CLOEXEC)
 127 # which leads to a constant overflow when using O_CLOEXEC in some
 128 # go code. Issue wan not present in 6.1 (no O_CLOEXEC) and is no
 129 # more present in 7.2 (_FCLOEXEC is a 32 bit value).
 130 if test "${GOOS}" = "aix" && `oslevel | grep -q "^7.1"`; then
 131     sed -e 's/const __FCLOEXEC = .*/const __FCLOEXEC = 0/' ${OUT} > ${OUT}-2
 132     mv ${OUT}-2 ${OUT}
 133 fi
 134
 135 # Make sure _MAP_FAILED is defined.
 136 if ! grep '^const _MAP_FAILED =' gen-sysinfo.go > /dev/null 2>&1; then
 137   echo "const _MAP_FAILED = ^uintptr(0)" >> ${OUT}
 138 fi
 139 # Make sure _MAP_ANON is defined.
 140 if ! grep '^const _MAP_ANON =' gen-sysinfo.go > /dev/null 2>&1; then
 141   if grep '^const _MAP_ANONYMOUS ' gen-sysinfo.go > /dev/null 2>&1; then
 142     echo "const _MAP_ANON = _MAP_ANONYMOUS" >> ${OUT}
 143   else
 144     echo "const _MAP_ANON = 0" >> ${OUT}
 145   fi
 146 fi
 147 # Make sure _MADV_DONTNEED is defined.
 148 if ! grep '^const _MADV_DONTNEED =' gen-sysinfo.go > /dev/null 2>&1; then
 149   echo "const _MADV_DONTNEED = 0" >> ${OUT}
 150 fi
 151 # Make sure _MADV_FREE is defined.
 152 if ! grep '^const _MADV_FREE =' gen-sysinfo.go > /dev/null 2>&1; then
 153   echo "const _MADV_FREE = 0" >> ${OUT}
 154 fi
 155 # Make sure _MADV_HUGEPAGE is defined.
 156 if ! grep '^const _MADV_HUGEPAGE =' gen-sysinfo.go > /dev/null 2>&1; then
 157   echo "const _MADV_HUGEPAGE = 0" >> ${OUT}
 158 fi
 159 # Make sure _MADV_NOHUGEPAGE is defined.
 160 if ! grep '^const _MADV_NOHUGEPAGE =' gen-sysinfo.go > /dev/null 2>&1; then
 161   echo "const _MADV_NOHUGEPAGE = 0" >> ${OUT}
 162 fi
 163
 164 # The semt structure, for Solaris.
 165 grep '^type _sem_t ' gen-sysinfo.go | \
 166     sed -e 's/_sem_t/semt/' >> ${OUT}
 167
 168 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 169 # double is commented by -fdump-go-spec.
 170 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 171   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 172 fi
 173 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 174   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 175 fi
 176
 177 # The Solaris 11 Update 1 _zone_net_addr_t struct.
 178 grep '^type _zone_net_addr_t ' gen-sysinfo.go | \
 179     sed -e 's/_in6_addr/[16]byte/' \
 180     >> ${OUT}
 181
 182 # The Solaris 11.4 _flow_arp_desc_t struct.
 183 grep '^type _flow_arp_desc_t ' gen-sysinfo.go | \
 184     sed -e 's/_in6_addr_t/[16]byte/g' \
 185     >> ${OUT}
 186
 187 # The Solaris 11.4 _flow_l3_desc_t struct.
 188 grep '^type _flow_l3_desc_t ' gen-sysinfo.go | \
 189     sed -e 's/_in6_addr_t/[16]byte/g' \
 190     >> ${OUT}
 191
 192 # The Solaris 11.3 _mac_ipaddr_t struct.
 193 grep '^type _mac_ipaddr_t ' gen-sysinfo.go | \
 194     sed -e 's/_in6_addr_t/[16]byte/g' \
 195     >> ${OUT}
 196
 197 # The Solaris 11.3 _mactun_info_t struct.
 198 grep '^type _mactun_info_t ' gen-sysinfo.go | \
 199     sed -e 's/_in6_addr_t/[16]byte/g' \
 200     >> ${OUT}
 201
 202 # The Solaris port_event_t struct.
 203 grep '^type _port_event_t ' gen-sysinfo.go | \
 204     sed -e s'/_port_event_t/portevent/' \
 205     >> ${OUT}
 206
 207 # The *BSD kevent struct.
 208 grep '^type _kevent ' gen-sysinfo.go | \
 209     sed -e s'/_kevent/keventt/' \
 210       -e 's/ udata [^;}]*/ udata *byte/' \
 211     >> ${OUT}
 212
 213 # Type 'uint128' is needed in a couple of type definitions on arm64,such
 214 # as _user_fpsimd_struct, _elf_fpregset_t, etc.
 215 if ! grep '^type uint128' ${OUT} > /dev/null 2>&1; then
 216     echo "type uint128 [16]byte" >> ${OUT}
 217 fi