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-rw-r--r--package/elf2flt/src/ld-elf2flt.in219
1 files changed, 219 insertions, 0 deletions
diff --git a/package/elf2flt/src/ld-elf2flt.in b/package/elf2flt/src/ld-elf2flt.in
new file mode 100644
index 000000000..b87663600
--- /dev/null
+++ b/package/elf2flt/src/ld-elf2flt.in
@@ -0,0 +1,219 @@
+#!/bin/sh
+#
+# allow us to do flat processing if the flag -Wl,-elf2flt or -elf2flt to
+# the 'C' compiler or linker respectively
+#
+# uses the env. var FLTFLAGS as extra parameters to pass to elf2flt
+# arguments given like -Wl,-elf2flt="-b 10000 -v" are given before FLTFLAGS
+#
+# Copyright (C) 2002,2003 David McCullough <davidm@snapgear.com>
+# Copyright (C) 2000, Lineo. davidm@lineo.com
+#
+# This is Free Software, under the GNU Public Licence v2 or greater.
+#
+
+LINKER="$0.real" # the original renamed-linker
+ELF2FLT="`expr $0 : '\(.*\)ld'`elf2flt"
+NM="`expr $0 : '\(.*\)ld'`nm"
+TOOLDIR="`dirname $0`" # let gcc find the tools for us
+OBJCOPY="`expr $0 : '\(.*\)ld'`objcopy"
+[ -f "$OBJCOPY" ] || OBJCOPY="$TOOLDIR/../../bin/@target_alias@-objcopy"
+OBJDUMP="`expr $OBJCOPY : '\(.*\)objcopy'`objdump"
+LDSCRIPTPATH="@binutils_ldscript_dir@" # and the scripts
+SHARED_ID=""
+NEWLDSCRIPT=""
+
+# check TOOLDIR from prefix/bin/ or prefix/target-alias/bin/
+[ -d "${LDSCRIPTPATH}" ] || LDSCRIPTPATH="${TOOLDIR}/../lib"
+
+#
+# if we have the elf2flt options, run it
+#
+
+if expr "$*" : ".*-elf2flt.*" > /dev/null
+then
+ ARG1=
+ ARG2=
+ OFILE="a.out"
+ PIC=
+ SDIRS=
+ LDSCRIPT=
+ FINAL="yes"
+ FINAL_ONLY=
+ MOVDAT=
+ VERBOSE=
+
+ while [ $# -ne 0 ]
+ do
+ case "$1" in
+
+ -elf2flt) ;; # we already know this
+ -elf2flt*)FLTFLAGS="`expr \"$1\" : '-elf2flt=\(.*\)'` $FLTFLAGS";;
+
+ -move-rodata)
+ MOVDAT="y";; # Put rodata in ROM if possible
+
+ -shared-lib-id)
+ shift; SHARED_ID="$1";; # Shared library ID
+
+ -o) shift; OFILE="$1";; # the final outfile
+ -o*) OFILE="`expr \"$1\" : '-o\(.*\)'`";;
+
+ -T) shift; LDSCRIPT="$1";; # they have a linker script
+ -c) shift; LDSCRIPT="$1";;
+
+ -L) ARG1="$ARG1 $1" # remember search dirs
+ shift;
+ ARG1="$ARG1 $1"
+ SDIRS="$SDIRS -L$1"
+ ;;
+ -L*) ARG1="$ARG1 $1"; SDIRS="$SDIRS $1";;
+
+ -EB) ARG1="$ARG1 $1"; SDIRS="$SDIRS $1";; # arm big endian
+
+ -relax) ;; # eat this for microblaze
+
+ -r|-Ur) FINAL="" # this is not a final link
+ ARG1="$ARG1 $1"
+ ;;
+
+ -v) ARG1="$ARG1 $1"
+ VERBOSE="y"
+ ;;
+
+ -m) shift; EMUL="-m $1";; # ld emulations for h8300
+ -m*) EMUL=$1;;
+
+ *) ARG1="$ARG1 $1"
+ ;;
+ esac
+ shift
+ done
+
+ if [ "$FINAL" = "yes" ]
+ then
+ [ "$VERBOSE" = "y" ] && set -x
+ ARG1="$ARG1 $FINAL_ONLY"
+ NEWLDSCRIPT=`mktemp /tmp/flt-XXXXXX`
+ SEDOP=" -e s/^R_RODAT// -e /^W_RODAT/d"
+ OBJCOPYOP=""
+ if [ "$MOVDAT" ]
+ then
+ $LINKER -r -d -o "$OFILE.elf2flt" $ARG1 || exit $?
+ if [ "`$OBJDUMP -h "$OFILE.elf2flt" | \
+ egrep -A1 '[.]rodata' | grep RELOC`" ]
+ then
+ echo "warning: .rodata section contains relocations"
+ else
+ SEDOP="-e /^R_RODAT/d -e s/^W_RODAT//"
+ fi
+ fi
+ if [ "$SHARED_ID" ]
+ then
+ # Massage the linker script into something useful. These
+ # regexps are ugly due to some bizzare shell quoting rules.
+ # SEDOP="$SEDOP -e \"s/ORIGIN = 0x0,/ORIGIN = 0x${SHARED_ID}000000,/\""
+ # SEDOP="$SEDOP -e \"s/.text 0x0 :/.text 0x${SHARED_ID}000000 :/\""
+ SEDOP="$SEDOP -e s/\\(ORIGIN.=.0\\)x0,/\\1x${SHARED_ID}000000,/"
+ SEDOP="$SEDOP -e s/\\([.]text.0\\)x0[^0-9]:/\\1x${SHARED_ID}000000:/"
+
+ if [ "$SHARED_ID" -gt 0 ]
+ then
+ # Non application modules enter via main not _start
+ # SEDOP="$SEDOP -e 's/ENTRY (_start)/ENTRY (main)/'"
+ SEDOP="$SEDOP -e s/\\(ENTRY.\\)(_start)/\1(lib_main)/"
+ OBJCOPYOP="--localize-hidden --weaken"
+ fi
+
+ # Provide the magic parameter that defines the library data segment pointer offset
+ case "@target_cpu@" in
+ h8300) GOT_OFFSET="__current_shared_library_er5_offset_";;
+ *) GOT_OFFSET="_current_shared_library_a5_offset_";;
+ esac
+ ARG1="$ARG1 -defsym $GOT_OFFSET=`expr ${SHARED_ID} '*' -4 - 4`"
+ fi
+ if [ "@emit_relocs@" = "yes" ]
+ then
+ SEDOP="$SEDOP -e s/^SINGLE_LINK://"
+ else
+ SEDOP="$SEDOP -e /^SINGLE_LINK:/d"
+ fi
+
+ # provide a default linker script, we usually need one
+ [ -z "$LDSCRIPT" ] && LDSCRIPT="${LDSCRIPTPATH}/elf2flt.ld"
+
+ # if we can find the linker script we preprocess it, otherwise
+ # we assume the user knows what they are doing
+ if [ -f "$LDSCRIPT" ]; then
+ sed $SEDOP < "$LDSCRIPT" > "$NEWLDSCRIPT"
+ LDSCRIPT="$NEWLDSCRIPT"
+ elif [ -f "${LDSCRIPTPATH}/$LDSCRIPT" ]; then
+ sed $SEDOP < "${LDSCRIPTPATH}/$LDSCRIPT" > "$NEWLDSCRIPT"
+ LDSCRIPT="$NEWLDSCRIPT"
+ elif [ -f "${LDSCRIPTPATH}/ldscripts/$LDSCRIPT" ]; then
+ sed $SEDOP < "${LDSCRIPTPATH}/ldscripts/$LDSCRIPT" > "$NEWLDSCRIPT"
+ LDSCRIPT="$NEWLDSCRIPT"
+ fi
+
+ if [ "@emit_relocs@" = "yes" ]
+ then
+ $LINKER $EMUL $SDIRS -T $LDSCRIPT -q -o "$OFILE.gdb" $ARG1 ||exit $?
+ RFILE="$OFILE.gdb"
+ FLTFLAGS="$FLTFLAGS -a"
+ else
+ if [ "@got_check@" = "no" ]
+ then
+ $LINKER $EMUL $SDIRS -T $LDSCRIPT -Ur -d -o "$OFILE.elf" $ARG1 ||exit $?
+ $LINKER $EMUL $SDIRS -T $LDSCRIPT -o "$OFILE.gdb" $ARG1 ||exit $?
+ else
+ $LINKER $EMUL -r -d -o "$OFILE.elf2flt" $ARG1 ||exit $?
+ $LINKER $EMUL $SDIRS -T $LDSCRIPT -Ur -o "$OFILE.elf" "$OFILE.elf2flt" ||exit $?
+ $LINKER $EMUL $SDIRS -T $LDSCRIPT -o "$OFILE.gdb" "$OFILE.elf2flt" ||exit $?
+ rm -f "$OFILE.elf2flt"
+ fi
+ RFILE="$OFILE.elf"
+ fi
+ if $NM "$OFILE.gdb" | grep _GLOBAL_OFFSET_TABLE_ > /dev/null
+ then
+ $ELF2FLT $FLTFLAGS -o "$OFILE" -p "$OFILE.gdb" "$RFILE" || exit $?
+ else
+ $ELF2FLT $FLTFLAGS -o "$OFILE" -r "$RFILE" || exit $?
+ fi
+ if [ "$OBJCOPYOP" ]
+ then
+ if $OBJCOPY $OBJCOPYOP --help > /dev/null 2>&1
+ then
+ $OBJCOPY $OBJCOPYOP "$OFILE.gdb" ||exit $?
+ else
+ case " $OBJCOPYOP " in
+ *" --localize-hidden "*)
+ SYMS=`mktemp /tmp/flt-XXXXXX`
+ $OBJDUMP --syms "$OFILE.gdb" > "$SYMS" ||exit $?
+ sed -n 's/.*\(\.hidden\|\.internal\) \(.*\)/-L \2/p' < "$SYMS" > "$SYMS.hidden" ||exit $?
+ if [ -s "$SYMS.hidden" ]
+ then
+ xargs ${VERBOSE:+-t} $OBJCOPY "$OFILE.gdb" < "$SYMS.hidden" ||exit $?
+ fi
+ rm -f "$SYMS" "$SYMS.hidden"
+ ;;
+ esac
+ case " $OBJCOPYOP " in
+ *" --weaken "*)
+ $OBJCOPY --weaken "$OFILE.gdb" ||exit $?
+ ;;
+ esac
+ fi
+ fi
+ [ "$RFILE" = "$OFILE.gdb" ] || rm -f "$RFILE" # not needed for any reason
+ rm -f "$NEWLDSCRIPT"
+ exit 0
+ fi
+
+ exec $LINKER -o "$OFILE" $ARG1
+fi
+
+#
+# otherwise pretend we aren't here
+#
+
+exec $LINKER "$@"
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