2007-07-19 Roland McGrath <roland@redhat.com>
[deliverable/binutils-gdb.git] / ld / genscripts.sh
index 4069d68b27d003db847c859e591e43392ea1b0fb..17c516c479000049595ca0fdc55b366272eaa813 100755 (executable)
@@ -1,9 +1,28 @@
 #!/bin/sh
 # genscripts.sh - generate the ld-emulation-target specific files
+# Copyright 2007 Free Software Foundation, Inc.
+#
+# This file is part of the Gnu Linker.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GLD; see the file COPYING.  If not, write to the Free
+# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
 #
 # Usage: genscripts_extra.sh \
 #          srcdir \
 #          libdir \
+#          prefix \
 #          exec_prefix \
 #          host \
 #          target \
@@ -22,6 +41,7 @@
 #    /sources/ld \
 #    /usr/local/lib \
 #    /usr/local \
+#    /usr/local \
 #    sparc-sun-sunos4.1.3 \
 #    sparc-sun-sunos4.1.3 \
 #    sparc-sun-sunos4.1.3 \
 
 srcdir=$1
 libdir=$2
-exec_prefix=$3
-host=$4
-target=$5
-target_alias=$6
-EMULATION_LIBPATH=$7
-NATIVE_LIB_DIRS=$8
-use_sysroot=$9
+prefix=$3
+exec_prefix=$4
+host=$5
+target=$6
+target_alias=$7
+EMULATION_LIBPATH=$8
+NATIVE_LIB_DIRS=$9
 shift 9
-EMULATION_NAME=$1
-TOOL_LIB=$2
-CUSTOMIZER_SCRIPT=$3
+use_sysroot=$1
+EMULATION_NAME=$2
+TOOL_LIB=$3
+CUSTOMIZER_SCRIPT=$4
 
 # Can't use ${TOOL_LIB:-$target_alias} here due to an Ultrix shell bug.
 if [ "x${TOOL_LIB}" = "x" ] ; then
@@ -133,11 +154,11 @@ if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
   if [ "x${use_sysroot}" != "xyes" ] ; then
     case " ${libs} " in
       *" ${libdir} "*) ;;
-      *) libs="${libdir} ${libs}"
+      *) libs="${libdir} ${libs}" ;;
     esac
     case " ${libs} " in
       *" ${tool_lib} "*) ;;
-      *) libs="${tool_lib} ${libs}"
+      *) libs="${tool_lib} ${libs}" ;;
     esac
   fi
 
@@ -186,18 +207,25 @@ if [ "x${use_sysroot}" != "xyes" ] ; then
   ::) LIB_PATH=${tool_lib} ;;
   *) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
   esac
+  # For multilib targets, search both $tool_lib dirs
+  if [ "x${LIBPATH_SUFFIX}" != "x" ] ; then
+    case :${LIB_PATH}: in
+      ::: | *:${tool_lib}${LIBPATH_SUFFIX}:*) ;;
+      ::) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX} ;;
+      *) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX}:${LIB_PATH} ;;
+    esac
+  fi
 fi
 
 LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
 
 # We need it for testsuite.
-case " $EMULATION_LIBPATH " in
-  *" ${EMULATION_NAME} "*)
+set $EMULATION_LIBPATH
+if [ "x$1" = "x$EMULATION_NAME" ]; then
     test -d tmpdir || mkdir tmpdir
-    test -f tmpdir/libpath.exp || \
+    rm -f tmpdir/libpath.exp
     echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
-    ;;
-esac
+fi
 
 # Generate 5 or 6 script files from a master script template in
 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 or 6
@@ -283,7 +311,16 @@ if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
   ) | sed -e '/^ *$/d;s/[      ]*$//' > ldscripts/${EMULATION_NAME}.xc
   rm -f ${COMBRELOC}
+  LD_FLAG=w
+  RELRO_NOW=" "
+  COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
+  ( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
+    . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+  ) | sed -e '/^ *$/d;s/[      ]*$//' > ldscripts/${EMULATION_NAME}.xw
+  rm -f ${COMBRELOC}
   COMBRELOC=
+  unset RELRO_NOW
 fi
 
 if test -n "$GENERATE_SHLIB_SCRIPT"; then
@@ -299,13 +336,22 @@ if test -n "$GENERATE_SHLIB_SCRIPT"; then
   if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
     LD_FLAG=cshared
     DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
-    COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
+    COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp
     ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
       . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
     ) | sed -e '/^ *$/d;s/[    ]*$//' > ldscripts/${EMULATION_NAME}.xsc
     rm -f ${COMBRELOC}
+    LD_FLAG=wshared
+    RELRO_NOW=" "
+    COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
+    ( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
+      . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[    ]*$//' > ldscripts/${EMULATION_NAME}.xsw
+    rm -f ${COMBRELOC}
     COMBRELOC=
+    unset RELRO_NOW
   fi
   unset CREATE_SHLIB
 fi
@@ -323,13 +369,22 @@ if test -n "$GENERATE_PIE_SCRIPT"; then
   if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
     LD_FLAG=cpie
     DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
-    COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
+    COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
     ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
       . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
     ) | sed -e '/^ *$/d;s/[    ]*$//' > ldscripts/${EMULATION_NAME}.xdc
     rm -f ${COMBRELOC}
+    LD_FLAG=wpie
+    RELRO_NOW=" "
+    COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
+    ( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
+      . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[    ]*$//' > ldscripts/${EMULATION_NAME}.xdw
+    rm -f ${COMBRELOC}
     COMBRELOC=
+    unset RELRO_NOW
   fi
   unset CREATE_PIE
 fi
@@ -338,5 +393,33 @@ case " $EMULATION_LIBPATH " in
     *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
 esac
 
+if test -n "${BASH+set}"; then
+  source_em()
+  {
+    local current_script="$em_script"
+    em_script=$1
+    . $em_script
+    em_script=$current_script
+  }
+  fragment()
+  {
+    local lineno=$[${BASH_LINENO[0]} + 1]
+    echo >> e${EMULATION_NAME}.c "#line $lineno \"$em_script\""
+    cat >> e${EMULATION_NAME}.c
+  }
+else
+  source_em()
+  {
+    . $1
+  }
+  fragment()
+  {
+    cat >> e${EMULATION_NAME}.c
+  }
+fi
+
 # Generate e${EMULATION_NAME}.c.
-. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
+# Start with an empty file, then the sourced .em script
+# can use the "fragment" function to append.
+> e${EMULATION_NAME}.c
+source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
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