libgo/mksysinfo: Always define IPV6_TCLASS.

[pf3gnuchains/gcc-fork.git] / libgo / mksysinfo.sh

diff --git a/libgo/mksysinfo.sh b/libgo/mksysinfo.sh
index ca9e5f6..a10e423 100755 (executable)
--- a/libgo/mksysinfo.sh
+++ b/libgo/mksysinfo.sh
@@ -55,6 +55,9 @@ cat > sysinfo.c <<EOF
 #if defined(HAVE_SYS_MMAN_H)
 #include <sys/mman.h>
 #endif
+#if defined(HAVE_SYS_PRCTL_H)
+#include <sys/prctl.h>
+#endif
 #if defined(HAVE_SYS_PTRACE_H)
 #include <sys/ptrace.h>
 #endif
@@ -89,6 +92,15 @@ cat > sysinfo.c <<EOF
 #if defined(HAVE_NET_IF_H)
 #include <net/if.h>
 #endif
+
+/* Constants that may only be defined as expressions on some systems,
+   expressions too complex for -fdump-go-spec to handle.  These are
+   handled specially below.  */
+enum {
+#ifdef TIOCGWINSZ
+  TIOCGWINSZ_val = TIOCGWINSZ,
+#endif
+};
 EOF
 
 ${CC} -fdump-go-spec=gen-sysinfo.go -std=gnu99 -S -o sysinfo.s sysinfo.c
@@ -180,7 +192,7 @@ grep '^const _SHUT_' gen-sysinfo.go |
   sed -e 's/^\(const \)_\(SHUT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 
 # The net package requires some const definitions.
-for m in IPV6_V6ONLY IPPROTO_IPV6 IPV6_JOIN_GROUP IPV6_LEAVE_GROUP; do
+for m in IPV6_V6ONLY IPPROTO_IPV6 IPV6_JOIN_GROUP IPV6_LEAVE_GROUP IPV6_TCLASS; do
   if ! grep "^const $m " ${OUT} >/dev/null 2>&1; then
     echo "const $m = 0" >> ${OUT}
   fi
@@ -193,10 +205,17 @@ grep '^const __PC' gen-sysinfo.go |
 # epoll constants.
 grep '^const _EPOLL' gen-sysinfo.go |
   sed -e 's/^\(const \)_\(EPOLL[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
-# Make sure EPOLLRDHUP is defined.
+# Make sure EPOLLRDHUP and EPOLL_CLOEXEC are defined.
 if ! grep '^const EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
   echo "const EPOLLRDHUP = 0x2000" >> ${OUT}
 fi
+if ! grep '^const EPOLL_CLOEXEC' ${OUT} >/dev/null 2>&1; then
+  echo "const EPOLL_CLOEXEC = 02000000" >> ${OUT}
+fi
+
+# Prctl constants.
+grep '^const _PR_' gen-sysinfo.go |
+  sed -e 's/^\(const \)_\(PR_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 
 # Ptrace constants.
 grep '^const _PTRACE' gen-sysinfo.go |
@@ -231,7 +250,7 @@ if ! grep '^const PTRACE_O_MASK' ${OUT} > /dev/null 2>&1; then
   echo "const PTRACE_O_MASK = 0x7f" >> ${OUT}
 fi
 if ! grep '^const _PTRACE_GETEVENTMSG' ${OUT} > /dev/null 2>&1; then
-  echo "const _PTRACE_GETEVENTMSG = 0x4201" >> ${OUT}
+  echo "const PTRACE_GETEVENTMSG = 0x4201" >> ${OUT}
 fi
 if ! grep '^const PTRACE_EVENT_FORK' ${OUT} > /dev/null 2>&1; then
   echo "const PTRACE_EVENT_FORK = 1" >> ${OUT}
@@ -493,6 +512,26 @@ if ! grep 'type IPv6Mreq ' ${OUT} >/dev/null 2>&1; then
   echo 'type IPv6Mreq struct { Multiaddr [16]byte; Interface uint32; }' >> ${OUT}
 fi
 
+# The size of the ipv6_mreq struct.
+echo 'var SizeofIPv6Mreq = int(unsafe.Sizeof(IPv6Mreq{}))' >> ${OUT}
+
+# The ip_mreqn struct.
+grep '^type _ip_mreqn ' gen-sysinfo.go | \
+    sed -e 's/_ip_mreqn/IPMreqn/' \
+      -e 's/imr_multiaddr/Multiaddr/' \
+      -e 's/imr_address/Address/' \
+      -e 's/imr_ifindex/Ifindex/' \
+      -e 's/_in_addr/[4]byte/g' \
+    >> ${OUT}
+
+# We need IPMreq to compile the net package.
+if ! grep 'type IPMreqn ' ${OUT} >/dev/null 2>&1; then
+  echo 'type IPMreqn struct { Multiaddr [4]byte; Interface [4]byte; Ifindex int32 }' >> ${OUT}
+fi
+
+# The size of the ip_mreqn struct.
+echo 'var SizeofIPMreqn = int(unsafe.Sizeof(IPMreqn{}))' >> ${OUT}
+
 # Try to guess the type to use for fd_set.
 fd_set=`grep '^type _fd_set ' gen-sysinfo.go || true`
 fds_bits_type="_C_long"
@@ -521,7 +560,14 @@ grep '^type _passwd ' gen-sysinfo.go | \
 
 # The ioctl flags for the controlling TTY.
 grep '^const _TIOC' gen-sysinfo.go | \
+    grep -v '_val =' | \
     sed -e 's/^\(const \)_\(TIOC[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
+# We need TIOCGWINSZ.
+if ! grep '^const TIOCGWINSZ' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TIOCGWINSZ_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TIOCGWINSZ = _TIOCGWINSZ_val' >> ${OUT}
+  fi
+fi
 
 # The ioctl flags for terminal control
 grep '^const _TC[GS]ET' gen-sysinfo.go | \