#!/bin/bash
#
# Barrelfish x86-64 cross compilation wrapper
# Copyright (c) 2011 Simon Peter <speter@inf.ethz.ch>
#
# Set SRCPATH and BUILDPATH to your Barrelfish source and build paths,
# respectively, and create symlinks to this file, like this:
#
# ln -s barrelfish-cc-wrapper x86_64-barrelfish-none-gcc
#
# You can set EXTRALIBS to link to libraries needed on Barrelfish that
# are not easily figured out by Autoconf or passable as LDFLAGS on the
# commandline.

# echo "invoked with: $*" >> debug.out

SRCPATH=/home/simpeter/projects/arrakis/src
BUILDPATH=/home/simpeter/projects/arrakis/qemu
EXTRALIBS="$BUILDPATH/x86_64/lib/libposixcompat.a $BUILDPATH/x86_64/lib/libvfs.a $BUILDPATH/x86_64/lib/libahci.a $BUILDPATH/x86_64/lib/libnfs.a $BUILDPATH/x86_64/lib/libarranet.a $BUILDPATH/x86_64/lib/libe1000n.a"
#EXTRALIBS="$BUILDPATH/x86_64/lib/libposixcompat.a $BUILDPATH/x86_64/lib/libvfs.a $BUILDPATH/x86_64/lib/libahci.a $BUILDPATH/x86_64/lib/libnfs.a $BUILDPATH/x86_64/lib/liblwip.a $BUILDPATH/x86_64/lib/libcontmng.a $BUILDPATH/x86_64/lib/liboctopus.a"

mode=unknown
prog=${0##*-}

# Copy commandline arguments
argi=0
for a in "$@"; do
    args[$argi]=$a
    argi=$((argi + 1))
done

case $prog in
    g++)
	mode=compilelink++
	;;
    gcc)
	mode=compilelink
	;;
    ld)
	mode=link
	;;

    ar)
	mode=archive
	;;

    ranlib)
	mode=ranlib
	;;

    *)
	echo "$0: Unknown program ($prog)" > /dev/stderr
	exit 1
	;;
esac

argi=0
for arg in "$@"; do
    case $arg in
	-print-prog-name=*)
	    # Print executable name for cross compiler if asked to do so
	    echo x86_64-barrelfish-none-${arg#-print-prog-name=}
	    exit 0
	    ;;

	-c)
	    # We solely compile when -c is given
	    if [ $mode = compilelink ]; then
		mode=compile
	    elif [ $mode = compilelink++ ]; then
		mode=compile++
	    fi
	    ;;

	-lm)
	    args[$argi]="$BUILDPATH/x86_64/lib/libm.a"
	    ;;

	-shared)
	    echo $0: Shared objects not supported by Barrelfish! >/dev/stderr
	    exit 1
	    ;;
    esac

    argi=$((argi + 1))
done

case $mode in
    compile)
	gcc -nostdinc -nostdlib -static -fno-builtin -m64 -mno-red-zone -U__linux__ -Ulinux -DBARRELFISH -DCONFIG_QEMU_NETWORK -DTRACE_DISABLE_LRPC -DCONFIG_LAZY_THC -DCONFIG_NEWLIB -DUSE_KALUGA_DVM -DCONFIG_INTERCONNECT_DRIVER_LMP -DCONFIG_INTERCONNECT_DRIVER_UMP -DCONFIG_INTERCONNECT_DRIVER_MULTIHOP -DCONFIG_FLOUNDER_BACKEND_LMP -DCONFIG_FLOUNDER_BACKEND_UMP -DCONFIG_FLOUNDER_BACKEND_MULTIHOP -I$SRCPATH/include -I$SRCPATH/include/arch/x86_64 -I$SRCPATH/lib/newlib/newlib/libc/include -I$SRCPATH/include/c -I$SRCPATH/include/target/x86_64 -I$SRCPATH/lib/lwip-1.4.1/src/include/ipv4 -I$SRCPATH/lib/lwip-1.4.1/src/include -I$BUILDPATH/x86_64/include -I$BUILDPATH/x86_64/include/dev "${args[@]}"
	;;

    compilelink)
	gcc $BUILDPATH/x86_64/lib/crt0.o $BUILDPATH/x86_64/lib/crtbegin.o -Wl,-z,max-page-size=0x1000 -nostdinc -nostdlib -static -fno-builtin -m64 -mno-red-zone -U__linux__ -Ulinux -DBARRELFISH -DCONFIG_QEMU_NETWORK -DTRACE_DISABLE_LRPC -DCONFIG_LAZY_THC -DCONFIG_NEWLIB -DUSE_KALUGA_DVM -DCONFIG_INTERCONNECT_DRIVER_LMP -DCONFIG_INTERCONNECT_DRIVER_UMP -DCONFIG_INTERCONNECT_DRIVER_MULTIHOP -DCONFIG_FLOUNDER_BACKEND_LMP -DCONFIG_FLOUNDER_BACKEND_UMP -DCONFIG_FLOUNDER_BACKEND_MULTIHOP -I$SRCPATH/include -I$SRCPATH/include/arch/x86_64 -I$SRCPATH/lib/newlib/newlib/libc/include -I$SRCPATH/include/c -I$SRCPATH/include/target/x86_64 -I$SRCPATH/lib/lwip-1.4.1/src/include/ipv4 -I$SRCPATH/lib/lwip-1.4.1/src/include -I$BUILDPATH/x86_64/include -I$BUILDPATH/x86_64/include/dev "${args[@]}" $EXTRALIBS $BUILDPATH/x86_64/lib/libbarrelfish.a $BUILDPATH/x86_64/lib/liboctopus_parser.a $BUILDPATH/x86_64/errors/errno.o $BUILDPATH/x86_64/lib/libnewlib.a $BUILDPATH/x86_64/lib/crtend.o $BUILDPATH/x86_64/lib/libcollections.a
	;;

    link)
	ld "${args[@]}"
	;;

    archive)
	ar "${args[@]}"
	;;

    ranlib)
	ranlib "${args[@]}"
	;;

    *)
	echo "$0: Internal cross-compilation wrapper error (mode $mode)!" > /dev/stderr
	exit 1
	;;
esac