X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=ld%2Fgenscripts.sh;h=36e0a9d588a46ed6f082cd0375e64e5df4e156c2;hb=b48fa14c8688f60dffc6f64c253aaf1b73e3e04a;hp=dd1e9dda4bbe8e0accf896ce311979d606fa588c;hpb=e98fe4f7b54cbdf29aef9287bbb1bea8801dd05a;p=deliverable%2Fbinutils-gdb.git

diff --git a/ld/genscripts.sh b/ld/genscripts.sh
index dd1e9dda4b..36e0a9d588 100755
--- a/ld/genscripts.sh
+++ b/ld/genscripts.sh
@@ -1,24 +1,42 @@
 #!/bin/sh
 # genscripts.sh - generate the ld-emulation-target specific files
 #
-# Usage: genscripts.sh srcdir libdir host_alias target_alias \
-# default_emulation this_emulation
+# Usage: genscripts.sh srcdir libdir exec_prefix \
+#        host target target_alias default_emulation \
+#        native_lib_dirs this_emulation tool_dir
 #
 # Sample usage:
-# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib sparc-sun-sunos4.1.3 \
-# sparc-sun-sunos4.1.3 sun4 sun3
+# 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
 
 srcdir=$1
 libdir=$2
-host_alias=$3
-target_alias=$4
-DEFAULT_EMULATION=$5
-EMULATION_NAME=$6
+exec_prefix=$3
+host=$4
+target=$5
+target_alias=$6
+EMULATION_LIBPATH=$7
+NATIVE_LIB_DIRS=$8
+EMULATION_NAME=$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
 
 # Include the emulation-specific parameters:
 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
 
+if test -d ldscripts; then
+  true
+else
+  mkdir ldscripts
+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.
@@ -27,31 +45,52 @@ EMULATION_NAME=$6
 # To force a logically empty LIB_PATH, do LIBPATH=":".
 
 if [ "x${LIB_PATH}" = "x" ] ; then
-   if [ "x${host_alias}" = "x${target_alias}" ] ; then
-      # Native.
-      LIB_PATH=/lib:/usr/lib:${libdir}
-      if [ "${libdir}" != /usr/local/lib ] ; then
-        LIB_PATH=${LIB_PATH}:/usr/local/lib
-      fi
-   else
-      # Cross.
-      LIB_PATH=:
-   fi
+  if [ "x${host}" = "x${target}" ] ; then
+    case " $EMULATION_LIBPATH " in
+      *" ${EMULATION_NAME} "*)
+        # Native, and default or emulation requesting LIB_PATH.
+	LIB_PATH=${libdir}
+	for lib in ${NATIVE_LIB_DIRS}; do
+	  case :${LIB_PATH}: in
+	    *:${lib}:*) ;;
+	    *) LIB_PATH=${LIB_PATH}:${lib} ;;
+	  esac
+	done
+    esac
+  fi
 fi
-LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
 
-# Generate 5 script files from a master script template in
-# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 script files
-# is actually used depends on command line options given to ld.
-# (SCRIPT_NAME was set in the emulparams_file.)
+# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib.
+LIB_PATH=${tool_lib}:${LIB_PATH}
+
+LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
+
+# Generate 5 or 6 script files from a master script template in
+# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 or 6
+# script files is actually used depends on command line options given
+# to ld.  (SCRIPT_NAME was set in the emulparams_file.)
 #
 # A .x script file is the default script.
 # A .xr script is for linking without relocation (-r flag).
 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
 # A .xn script is for linking with -n flag (mix text and data on same page).
 # A .xbn script is for linking with -N flag (mix text and data on same page).
+# A .xs script is for generating a shared library with the --shared
+#   flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
+#   emulation parameters.
+# A .xc script is for linking with -z combreloc; it is only generated if
+#   $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
+#   $SCRIPT_NAME is "elf".
+# A .xsc script is for linking with --shared -z combreloc; it is generated
+#   if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
+#   $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
+#   parameters too.
+
+if [ "x$SCRIPT_NAME" = "xelf" ]; then
+  GENERATE_COMBRELOC_SCRIPT=yes
+fi
 
-SEGMENT_SIZE=${SEGMENT_SIZE-${PAGE_SIZE}}
+SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}}
 
 # Determine DATA_ALIGNMENT for the 5 variants, using
 # values specified in the emulparams/<emulation>.sh file or default.
@@ -65,31 +104,80 @@ DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
 LD_FLAG=r
 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
-(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
-  ldscripts/${EMULATION_NAME}.xr
+( echo "/* Script for ld -r: link without relocation */"
+  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xr
 
 LD_FLAG=u
 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
-CONSTRUCTING=
-(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
-  ldscripts/${EMULATION_NAME}.xu
+CONSTRUCTING=" "
+( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
+  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xu
 
 LD_FLAG=
 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
-RELOCATING=
-(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
-  ldscripts/${EMULATION_NAME}.x
+RELOCATING=" "
+( echo "/* Default linker script, for normal executables */"
+  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${srcdir}/scripttempl/${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}}
-(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
-  ldscripts/${EMULATION_NAME}.xn
+( echo "/* Script for -n: mix text and data on same page */"
+  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xn
 
 LD_FLAG=N
 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
-(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
-  ldscripts/${EMULATION_NAME}.xbn
+( echo "/* Script for -N: mix text and data on same page; don't align data */"
+  . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xbn
+
+if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
+  DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
+  LD_FLAG=c
+  COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
+  ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
+    . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xc
+  rm -f ${COMBRELOC}
+  COMBRELOC=
+fi
+
+if test -n "$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
+    . ${srcdir}/scripttempl/${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
+    ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
+      . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xsc
+    rm -f ${COMBRELOC}
+    COMBRELOC=
+  fi
+fi
+
+case " $EMULATION_LIBPATH " in
+    *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
+esac
 
-# Generate em_${EMULATION_NAME}.c.
+# Generate e${EMULATION_NAME}.c.
 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em