X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fgenscripts.sh;h=499607abe9891d8517c2b9bc4ae583bad95542e7;hb=ef1ab8e216a01d94a4cd23dc94363a78e2971b84;hp=fe1fa499f5ab18a8fab02fc014df76a5973943c1;hpb=79b1faa8744fa61119777c2e32ca7331ed3c0e5b;p=deliverable%2Fbinutils-gdb.git

diff --git a/ld/genscripts.sh b/ld/genscripts.sh
index fe1fa499f5..499607abe9 100755
--- a/ld/genscripts.sh
+++ b/ld/genscripts.sh
@@ -1,35 +1,101 @@
 #!/bin/sh
 # genscripts.sh - generate the ld-emulation-target specific files
+# Copyright (C) 2004-2014 Free Software Foundation, Inc.
 #
-# Usage: genscripts.sh srcdir libdir exec_prefix \
-#        host target target_alias default_emulation \
-#        native_lib_dirs this_emulation tool_dir
+# 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 \
+#          target_alias \
+#          default_emulation \
+#          native_lib_dirs \
+#          use_sysroot \
+#          enable_initfini_array \
+#          this_emulation \
+# optional:
+#          tool_dir
 #
 # Sample usage:
-# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \
-#  sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \
-#  "" sun3 sparc-sun-sunos4.1.3
-# produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
+#
+#   genscripts_extra.sh \
+#    /sources/ld \
+#    /usr/local/lib \
+#    /usr/local \
+#    /usr/local \
+#    sparc-sun-sunos4.1.3 \
+#    sparc-sun-sunos4.1.3 \
+#    sparc-sun-sunos4.1.3 \
+#    sun4 \
+#    "" \
+#    no \
+#    sun3 \
+#    sparc-sun-sunos4.1.3 \
+#    sparc.sh
+#
+# produces the linker scripts:
+#
+#   sun3.x       [default linker script]
+#   sun3.xbn     [used when the linker is invoked with "-N"]
+#   sun3.xn      [used when the linker is invoked with "-n"]
+#   sun3.xr      [used when the linker is invoked with "-r"]
+#   sun3.xu      [used when the linker is invoked with "-Ur"]
+# and maybe:
+#   sun3.xc      [used when the linker is invoked with "-z combreloc"]
+#   sun3.xsc     [used when the linker is invoked with "--shared"]
+#   sun3.xdc     [used when the linker is invoked with "-pie"]
+#   sun3.xa      [used when the linker is invoked with "--enable-auto-import"]
+#
+# It also produced the C source file:
+#
+#   em_sun3.c
+#
+# which is then compiled into the linker.
+#
+# The linker scripts are created by running the shell script
+# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
+# (and any other variables it wants to).  ${SCRIPT_NAME} is then
+# invoked with a variable called ${LD_FLAG} to tell it which version
+# of the linker script to create.
+
 
 srcdir=$1
 libdir=$2
-exec_prefix=$3
-host=$4
-target=$5
-target_alias=$6
-EMULATION_LIBPATH=$7
-NATIVE_LIB_DIRS=$8
-EMULATION_NAME=$9
+prefix=$3
+exec_prefix=$4
+host=$5
+target=$6
+target_alias=$7
+EMULATION_LIBPATH=$8
+NATIVE_LIB_DIRS=$9
 shift 9
-# Can't use ${1:-$target_alias} here due to an Ultrix shell bug.
-if [ "x$1" = "x" ] ; then
-  tool_lib=${exec_prefix}/${target_alias}/lib
-else
-  tool_lib=${exec_prefix}/$1/lib
-fi
+use_sysroot=$1
+ENABLE_INITFINI_ARRAY=$2
+EMULATION_NAME=$3
+TOOL_LIB=$4
 
 # Include the emulation-specific parameters:
-. ${srcdir}/emulparams/${EMULATION_NAME}.sh
+CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
+. ${CUSTOMIZER_SCRIPT}
 
 if test -d ldscripts; then
   true
@@ -37,39 +103,140 @@ else
   mkdir ldscripts
 fi
 
+# Set some flags for the emultempl scripts.  USE_LIBPATH will
+# be set for any libpath-using emulation; NATIVE will be set for a
+# libpath-using emulation where ${host} = ${target}.  NATIVE
+# may already have been set by the emulparams file, but that's OK
+# (it'll just get set to "yes" twice).
+
+case " $EMULATION_LIBPATH " in
+  *" ${EMULATION_NAME} "*)
+    if [ "x${host}" = "x${target}" ] ; then
+      NATIVE=yes
+      USE_LIBPATH=yes
+    elif [ "x${use_sysroot}" = "xyes" ] ; then
+      USE_LIBPATH=yes
+    fi
+    ;;
+esac
+
+# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
+if test "x$NATIVE" = "xyes" ; then
+  USE_LIBPATH=yes
+fi
+
 # Set the library search path, for libraries named by -lfoo.
 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
 # Otherwise, the default is set here.
 #
 # The format is the usual list of colon-separated directories.
 # To force a logically empty LIB_PATH, do LIBPATH=":".
+#
+# If we are using a sysroot, prefix library paths with "=" to indicate this.
+#
+# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
+# the library path with the suffix applied.
+
+# Paths with LIBPATH_SUFFIX
+lib_path1=
+# Paths without LIBPATH_SUFFIX
+lib_path2=
+if [ "${LIB_PATH}" != ":" ] ; then
+  lib_path2=${LIB_PATH}
+fi
+
+# Add args to lib_path1 and lib_path2, discarding any duplicates
+append_to_lib_path()
+{
+  if [ $# != 0 ]; then
+    for lib in "$@"; do
+      # The "=" is harmless if we aren't using a sysroot, but also needless.
+      if [ "x${use_sysroot}" = "xyes" ] ; then
+	lib="=${lib}"
+      fi
+      skip_lib=no
+      if test -n "${LIBPATH_SUFFIX}"; then
+	case "${lib}" in
+	  *${LIBPATH_SUFFIX})
+	    case :${lib_path1}: in
+	      *:${lib}:*) ;;
+	      ::) lib_path1=${lib} ;;
+	      *) lib_path1=${lib_path1}:${lib} ;;
+	    esac ;;
+	  *)
+	    if test -n "${LIBPATH_SUFFIX_SKIP}"; then
+	      case "${lib}" in
+		*${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;;
+	      esac
+	    fi
+	    if test "${skip_lib}" = "no"; then
+	      case :${lib_path1}: in
+		*:${lib}${LIBPATH_SUFFIX}:*) ;;
+		::) lib_path1=${lib}${LIBPATH_SUFFIX} ;;
+	        *) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;;
+	      esac
+	    fi ;;
+	esac
+      fi
+      if test "${skip_lib}" = "no"; then
+	case :${lib_path1}:${lib_path2}: in
+	  *:${lib}:*) ;;
+	  *::) lib_path2=${lib} ;;
+	  *) lib_path2=${lib_path2}:${lib} ;;
+	esac
+      fi
+    done
+  fi
+}
+
+# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native
+# except when LIBPATH=":".
+if [ "${LIB_PATH}" != ":" ] ; then
+  libs=
+  if [ "x${TOOL_LIB}" = "x" ] ; then
+    if [ "x${NATIVE}" = "xyes" ] ; then
+      libs="${exec_prefix}/${target_alias}/lib"
+    fi
+  else
+    # For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
+    # and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path,
+    # because 64bit libraries may be in both places, depending on
+    # cross-development setup method (e.g.: /usr/s390x-linux/lib64
+    # vs. /usr/s390-linux/lib64)
+    case "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in
+      :* | *::* | *:*:*${LIBPATH_SUFFIX}) ;;
+      *) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;;
+    esac
+    libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}"
+  fi
+  append_to_lib_path ${libs}
+fi
 
-if [ "x${LIB_PATH}" = "x" ] ; then
-  # Cross, or native non-default emulation not requesting LIB_PATH.
-  LIB_PATH=
-
-  if [ "x${host}" = "x${target}" ] ; then
-    case " $EMULATION_LIBPATH " in
-      *" ${EMULATION_NAME} "*)
-        # Native, and default or emulation requesting LIB_PATH.
-        LIB_PATH=/lib:/usr/lib
-        if [ -n "${NATIVE_LIB_DIRS}" ]; then
-	  LIB_PATH=${LIB_PATH}:${NATIVE_LIB_DIRS}
-        fi
-        if [ "${libdir}" != /usr/lib ]; then
-	  LIB_PATH=${LIB_PATH}:${libdir}
-        fi
-        if [ "${libdir}" != /usr/local/lib ] ; then
-	  LIB_PATH=${LIB_PATH}:/usr/local/lib
-        fi
+if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
+  libs=${NATIVE_LIB_DIRS}
+  if [ "x${NATIVE}" = "xyes" ] ; then
+    case " ${libs} " in
+      *" ${libdir} "*) ;;
+      *) libs="${libdir} ${libs}" ;;
     esac
   fi
+  append_to_lib_path ${libs}
 fi
 
-# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib.
-LIB_PATH=${LIB_PATH}:${tool_lib}
+case :${lib_path1}:${lib_path2}: in
+  *:: | ::*) LIB_PATH=${lib_path1}${lib_path2} ;;
+  *) LIB_PATH=${lib_path1}:${lib_path2} ;;
+esac
 
-LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
+LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
+
+# We need it for testsuite.
+set $EMULATION_LIBPATH
+if [ "x$1" = "x$EMULATION_NAME" ]; then
+    test -d tmpdir || mkdir tmpdir
+    rm -f tmpdir/libpath.exp
+    echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
+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
@@ -96,10 +263,10 @@ if [ "x$SCRIPT_NAME" = "xelf" ]; then
   GENERATE_COMBRELOC_SCRIPT=yes
 fi
 
-SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}}
+SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
 
 # Determine DATA_ALIGNMENT for the 5 variants, using
-# values specified in the emulparams/<emulation>.sh file or default.
+# values specified in the emulparams/<script_to_run>.sh file or default.
 
 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
@@ -111,7 +278,7 @@ LD_FLAG=r
 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
 ( echo "/* Script for ld -r: link without relocation */"
-  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xr
 
@@ -119,7 +286,7 @@ LD_FLAG=u
 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
 CONSTRUCTING=" "
 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
-  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xu
 
@@ -127,22 +294,21 @@ LD_FLAG=
 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
 RELOCATING=" "
 ( echo "/* Default linker script, for normal executables */"
-  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.x
 
 LD_FLAG=n
 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
-TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
 ( echo "/* Script for -n: mix text and data on same page */"
-  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xn
 
 LD_FLAG=N
 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
-  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xbn
 
@@ -151,39 +317,124 @@ if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
   LD_FLAG=c
   COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
   ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
-    . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+    . ${CUSTOMIZER_SCRIPT}
     . ${srcdir}/scripttempl/${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}
+    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xw
+  rm -f ${COMBRELOC}
   COMBRELOC=
+  unset RELRO_NOW
 fi
 
 if test -n "$GENERATE_SHLIB_SCRIPT"; then
   LD_FLAG=shared
   DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
   CREATE_SHLIB=" "
-  # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
   (
     echo "/* Script for ld --shared: link shared library */"
-    . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+    . ${CUSTOMIZER_SCRIPT}
     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
   ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xs
   if test -n "$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 */"
-      . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+      . ${CUSTOMIZER_SCRIPT}
       . ${srcdir}/scripttempl/${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}
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xsw
+    rm -f ${COMBRELOC}
     COMBRELOC=
+    unset RELRO_NOW
   fi
+  unset CREATE_SHLIB
 fi
 
-for i in $EMULATION_LIBPATH ; do
-  test "$i" = "$EMULATION_NAME" && COMPILE_IN=true
-done
+if test -n "$GENERATE_PIE_SCRIPT"; then
+  LD_FLAG=pie
+  DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
+  CREATE_PIE=" "
+  (
+    echo "/* Script for ld -pie: link position independent executable */"
+    . ${CUSTOMIZER_SCRIPT}
+    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xd
+  if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
+    LD_FLAG=cpie
+    DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
+    COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
+    ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
+      . ${CUSTOMIZER_SCRIPT}
+      . ${srcdir}/scripttempl/${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}
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xdw
+    rm -f ${COMBRELOC}
+    COMBRELOC=
+    unset RELRO_NOW
+  fi
+  unset CREATE_PIE
+fi
+
+if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
+  LD_FLAG=auto_import
+  DATA_ALIGNMENT=${DATA_ALIGNMENT_}
+  (
+    echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data  */"
+    . ${CUSTOMIZER_SCRIPT}
+    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xa
+fi
+
+case "$COMPILE_IN: $EMULATION_LIBPATH " in
+    :*" ${EMULATION_NAME} "*) COMPILE_IN=yes;;
+esac
+
+# PR ld/5652:
+# Determine if the shell has support for the variable BASH_LINENO.
+# When it is the case, it is only available inside functions.
+has_lineno()
+{
+  test "x$BASH_LINENO" != "x"
+}
+
+# Enable accruate error source in the compiler error messages, if possible.
+if has_lineno; then
+  . ${srcdir}/genscrba.sh
+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