ld-elf2flt

embedded system 檔案格式轉換工具源代碼

#!/bin/sh
#
# allow us to do flat processing if the flag -Welf2flt (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
#
# Install by renaming all m68k-elf-ld/ld to XXX.real, and put this
# script in their place.
#
# Copyright (C) 2000, Lineo.
# [e-mail]
#

LINKER="$0.real"            # the original renamed-linker
ELF2FLT="`expr $0 : '\(.*\)ld'`elf2flt"
TOOLDIR="`dirname $0`"      # let gcc find the tools for us

#
# if we have the elf2flt options, run it
#

if expr "$*" : ".*-elf2flt.*" > /dev/null
then
	ARG1=
	ARG2=
	OFILE=
	PIC=
	SDIRS=
	LDSCRIPT=
	FINAL="yes"

	while [ $# -ne 0 ]
	do
		case "$1" in

		-elf2flt) ;;                           # we already know this
		-elf2flt*)FLTFLAGS="`expr \"$1\" : '-elf2flt=\(.*\)'` $FLTFLAGS";; 

		-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

		-r|-Ur)   FINAL=""                     # this is not a final link
		          ARG1="$ARG1 $1"
				  ;;

		*)        ARG1="$ARG1 $1"
				  ;;
		esac
		shift
	done

	if [ "$FINAL" = "yes" ]
	then
		[ -z "$LDSCRIPT" ] && LDSCRIPT="elf2flt.ld"
		$LINKER -r -d -o $OFILE.elf2flt $ARG1                        || exit $?
		$LINKER $SDIRS -T $LDSCRIPT -Ur -o $OFILE.elf $OFILE.elf2flt || exit $?
		$LINKER $SDIRS -T $LDSCRIPT -o $OFILE.gdb $OFILE.elf2flt     || exit $?
		rm -f $OFILE.elf2flt
		if grep _GLOBAL_OFFSET_TABLE_ $OFILE.gdb > /dev/null 
		then
			$ELF2FLT $FLTFLAGS -o $OFILE -p $OFILE.gdb $OFILE.elf || exit $?
		else
			$ELF2FLT $FLTFLAGS -o $OFILE -r $OFILE.elf || exit $?
		fi
		rm -f $OFILE.elf  # not needed for any reason
		exit 0
	fi

	exec $LINKER -o $OFILE $ARG1
fi

#
# otherwise pretend we aren't here
#

exec $LINKER "$@"