new development tools

2016-11-25 13:41:57 +00:00 · 2016-11-25 13:41:57 +00:00 · 1ba806ca1b
commit 1ba806ca1b
parent 6cc262b43b
42 changed files with 2346 additions and 44 deletions
--- a/QA.sh
+++ b/QA.sh
@ -1,7 +1,13 @@
 #!/bin/bash
+
+if [ "$JEHANNE" = "" ]; then
+        echo ./hacking/QA.sh requires the shell started by ./hacking/devshell.sh
+        exit 1
+fi
+
 trap : 2

-$JEHANNE/hacking/bin/ufs -root=$JEHANNE &
+$JEHANNE/hacking/bin/ufs -d=0 -root=$JEHANNE &
 ufspid=$!

 export machineflag=pc
@ -14,23 +20,41 @@ if [ "$(uname)" = "Linux" ] && [ -e /dev/kvm ]; then
        fi
 fi

-cd $JEHANNE/arch/$ARCH/kern/
+if [ "$DISK" = "" ]; then
+	export DISK=$JEHANNE/hacking/sample-disk.img
+fi
+
+if [ -a $DISK ]; then
+	bootDisk="-device ahci,id=ahci -drive id=boot,file=$DISK,index=0,cache=writeback,if=none -device ide-drive,drive=boot,bus=ahci.0"
+fi
+
+if [ "$KERNDIR" = "" ]; then
+	KERNDIR=$JEHANNE/arch/$ARCH/kern/
+fi
+if [ "$KERNEL" = "" ]; then
+	KERNEL=jehanne.32bit
+fi
+
+cd $KERNDIR
 read -r cmd <<EOF
 $kvmdo qemu-system-x86_64 -s -cpu Opteron_G1 -smp 1 -m 2048 $kvmflag \
 -serial stdio \
 --nographic \
 --monitor /dev/null \
 --machine $machineflag \
+$bootDisk \
 -net nic,model=rtl8139 \
 -net user,hostfwd=tcp::5555-:1522 \
 -net dump,file=/tmp/vm0.pcap \
 -redir tcp:9999::9 \
 -redir tcp:17010::17010 \
 -redir tcp:17013::17013 \
-append "nobootprompt=tcp maxcores=1024 fs=10.0.2.2 auth=10.0.2.2 nvram=/boot/nvram nvrlen=512 nvroff=0" \
-kernel jehanne.32bit $*
+-append "nobootprompt=tcp maxcores=1024 fs=10.0.2.2 auth=10.0.2.2 nvram=/boot/nvram nvrlen=512 nvroff=0 $KAPPEND" \
+-kernel $KERNEL $*
 EOF

+#-no-reboot -D $JEHANNE/../qemu.log -d int,cpu_reset,in_asm \
+
 echo $cmd
 eval $cmd

--- a/buildtools.sh
+++ b/buildtools.sh
@ -1,12 +1,67 @@
 #!/bin/bash
+
+BUILD_GO_TOOLS=true
+BUILD_DRAWTERM=true
+
+while test $# -gt 0
+do
+    case "$1" in
+        --help) echo "$0 [ --no-tools | --no-drawterm | --help ]"
+		exit 0
+            ;;
+        --no-tools) BUILD_GO_TOOLS=false
+            ;;
+        --no-drawterm) BUILD_DRAWTERM=false
+            ;;
+        --*) echo "bad option $1" && exit 1
+            ;;
+        *) echo "unexpected argument $1" && exit 1
+            ;;
+    esac
+    shift
+done
+
 cd `dirname $0`
 if [ -z "$UTILITIES" ]; then
 	UTILITIES=`pwd`
 fi
-git clean -x -d -f $UTILITIES
-echo -n Building development tools...
-GOBIN="$UTILITIES/bin" GOPATH="$UTILITIES/third_party:$UTILITIES" go get -d jehanne/cmd/...
-GOBIN="$UTILITIES/bin" GOPATH="$UTILITIES/third_party:$UTILITIES" go install jehanne/cmd/...
-GOBIN="$UTILITIES/bin" GOPATH="$UTILITIES/third_party:$UTILITIES" go install github.com/lionkov/ninep/srv/examples/ufs
+if [ "$BUILD_GO_TOOLS$BUILD_DRAWTERM" = "truetrue" ]; then
+	git clean -x -d -f $UTILITIES/bin
+fi
+if [ "$BUILD_GO_TOOLS" = "true" ]; then
+	echo -n Building development tools...
+	(
+		GOBIN="$UTILITIES/bin" GOPATH="$UTILITIES/third_party:$UTILITIES" go get -d jehanne/cmd/... &&
+		GOBIN="$UTILITIES/bin" GOPATH="$UTILITIES/third_party:$UTILITIES" go install jehanne/cmd/... &&
+		GOBIN="$UTILITIES/bin" GOPATH="$UTILITIES/third_party:$UTILITIES" go install github.com/lionkov/ninep/srv/examples/ufs
+	)
+	STATUS="$?"
+	if [ ! $STATUS -eq "0" ]
+	then
+		echo "FAIL"
+		exit $STATUS
+	else
+		echo "done."
+	fi
+fi

-echo " DONE."
+if [ "$BUILD_DRAWTERM" = "true" ]; then
+	echo -n Building drawterm...
+	(
+		cd $UTILITIES/third_party/src/github.com/0intro/drawterm/ && 
+		git clean -xdf > ../drawterm.build.log 2>&1 &&
+		CONF=unix make >> ../drawterm.build.log 2>&1 &&
+		mv drawterm $UTILITIES/bin
+	)
+	STATUS="$?"
+	if [ $STATUS -eq "0" ]
+	then
+		rm $UTILITIES/third_party/src/github.com/0intro/drawterm.build.log
+		echo "done."
+	else
+		echo "FAIL"
+		cat $UTILITIES/third_party/src/github.com/0intro/drawterm.build.log
+		exit $STATUS
+	fi
+fi
+exit $STATUS
--- a/cross/init.sh
+++ b/cross/init.sh
@ -0,0 +1,192 @@
+#!/bin/bash
+
+# This file is part of Jehanne.
+#
+# Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
+#
+# Jehanne is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, version 2 of the License.
+#
+# Jehanne is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+
+if [ "$JEHANNE" = "" ]; then
+        echo $0 requires the shell started by ./hacking/devshell.sh
+        exit 1
+fi
+
+#
+# WELLCOME TO HELL ! ! !
+#
+
+# If you want to understand _WHY_ Jehanne exists, you should try to
+# create a GCC crosscompiler in Debian without requiring root access or Tex.
+# And this despite the extreme quality of Debian GNU/Linux!
+
+# fetch all sources
+(cd src && fetch)
+
+# To create a Jehanne version of GCC, we need specific OUTDATED versions
+# of Autotools that won't compile easily in a modern Linux distro.
+
+function failOnError {
+	# $1 -> exit status on a previous command
+	# $2 -> task description
+	if [ $1 -ne 0 ]; then
+		echo "ERROR $2"
+		exit $1
+	fi
+}
+
+
+# build m4 1.4.14
+# - workaround a bug in lib/stdio.in.h, see http://lists.gnu.org/archive/html/bug-m4/2012-08/msg00008.html
+# - workaround a bug in src/m4.h, see https://bugs.archlinux.org/task/19829
+# both bugs exists thanks to changes in external code
+if [ ! -f tmp/bin/m4 ]; then
+(
+	cd src/m4 &&
+	sed -i '/_GL_WARN_ON_USE (gets/d' lib/stdio.in.h &&
+	( grep -q '#include <sys/stat.h>'  src/m4.h || sed -i 's:.*\#include <sys/types\.h>.*:&\n#include <sys/stat.h>:g' src/m4.h ) &&
+	./configure --prefix=$JEHANNE/hacking/cross/tmp &&
+	make && make install
+)
+failOnError $? "building m4"
+fi
+# build autoconf 2.64
+# - hack git-version-gen to avoid the -dirty flag in version on make
+# - autoreconf
+# - disable doc build
+# - disable man build
+if [ ! -f tmp/bin/autoconf ]; then
+(
+	cd src/autoconf &&
+	cp ../../patch/autoconf/build-aux/git-version-gen build-aux/git-version-gen &&
+	autoreconf &&
+	./configure --prefix=$JEHANNE/hacking/cross/tmp &&
+	cp ../../patch/MakeNothing.in ../autoconf/doc/Makefile.in &&
+	cp ../../patch/MakeNothing.in ../autoconf/man/Makefile.in &&
+	make && make install
+)
+failOnError $? "building autoconf"
+fi
+# build automake 1.11.1
+# - autoreconf to avoid conflicts with installed automake
+# - automake; configure; make (that will fail) and then automake again
+#   to workaround this hell
+# - disable doc build
+# - disable disable tests build
+if [ ! -f tmp/bin/automake ]; then
+(
+	cd src/automake &&
+	echo > doc/Makefile.am &&
+	touch NEWS AUTHORS && autoreconf -i && 
+	automake &&
+	(./configure --prefix=$JEHANNE/hacking/cross/tmp && make; automake) &&
+	./configure --prefix=$JEHANNE/hacking/cross/tmp &&
+	cp ../../patch/MakeNothing.in doc/Makefile.in &&
+	cp ../../patch/MakeNothing.in tests/Makefile.in &&
+	make && make install
+)
+failOnError $? "building automake"
+fi
+# build libtool 2.4
+if [ ! -f tmp/bin/libtool ]; then
+(
+	cd src/libtool &&
+	./configure --prefix=$JEHANNE/hacking/cross/tmp &&
+	make && make install
+)
+failOnError $? "building libtool"
+fi
+
+# FINALLY! We have our OUTDATED autotools in tmp/bin
+export PATH=$JEHANNE/hacking/cross/tmp/bin:$PATH
+export CROSS_DIR=$JEHANNE/hacking/cross
+if [ "$BUILD_DIRS_ROOT" = "" ]; then
+	export BUILD_DIRS_ROOT=$JEHANNE/hacking/cross/src
+fi
+if [ ! -d $BUILD_DIRS_ROOT ]; then
+	mkdir $BUILD_DIRS_ROOT
+fi
+
+function dynpatch {
+	# $1 -> path from cross/src
+	# $2 -> string to search
+	( cd $JEHANNE/hacking/cross/src &&
+	  grep -q jehanne $1 ||
+	  sed -n -i -e "/$2/r ../patch/$1" -e '1x' -e '2,${x;p}' -e '${x;p}' $1
+	)
+}
+
+# Patch and build binutils
+if [ "$BINUTILS_BUILD_DIR" = "" ]; then
+	export BINUTILS_BUILD_DIR=$BUILD_DIRS_ROOT/build-binutils
+fi
+if [ ! -d $BINUTILS_BUILD_DIR ]; then
+	mkdir $BINUTILS_BUILD_DIR
+fi
+if [ ! -f toolchain/bin/x86_64-jehanne-ar ]; then
+(
+	sed -i '/jehanne/b; /ELF_TARGET_ID/,/elf_backend_can_gc_sections/s/0x200000/0x1000 \/\/ jehanne hack/g' src/binutils/bfd/elf64-x86-64.c &&
+	sed -i '/jehanne/b; s/| -tirtos/| -tirtos* | -jehanne/g' src/binutils/config.sub &&
+	dynpatch 'binutils/bfd/config.bfd' '\# END OF targmatch.h' &&
+	dynpatch 'binutils/gas/configure.tgt' '  i860-\*-\*)' &&
+	( grep -q jehanne src/binutils/ld/configure.tgt || patch -p1 < patch/binutils/ld/configure.tgt ) &&
+	cp patch/binutils/ld/emulparams/elf_x86_64_jehanne.sh src/binutils/ld/emulparams/ &&
+	cp patch/binutils/ld/emulparams/elf_i386_jehanne.sh src/binutils/ld/emulparams/ &&
+	dynpatch 'binutils/ld/Makefile.am' 'eelf_x86_64.c: ' &&
+	(grep 'eelf_i386_jehanne.c \\' src/binutils/ld/Makefile.am || sed -i 's/.*ALL_EMULATION_SOURCES = \\.*/&\n\teelf_i386_jehanne.c \\/' src/binutils/ld/Makefile.am) &&
+	(grep 'eelf_x86_64_jehanne.c \\' src/binutils/ld/Makefile.am || sed -i 's/.*ALL_64_EMULATION_SOURCES = \\.*/&\n\teelf_x86_64_jehanne.c \\/' src/binutils/ld/Makefile.am) &&
+	cd src/binutils/ld && automake && cd ../ &&
+	cd $BINUTILS_BUILD_DIR &&
+	$CROSS_DIR/src/binutils/configure --disable-shared --enable-static --prefix=$JEHANNE/hacking/cross/toolchain --with-sysroot=$JEHANNE --target=x86_64-jehanne --enable-interwork --enable-multilib --disable-nls --disable-werror &&
+	cp $CROSS_DIR/patch/MakeNothing.in $CROSS_DIR/src/binutils/bfd/doc/Makefile &&
+	cp $CROSS_DIR/patch/MakeNothing.in $CROSS_DIR/src/binutils/bfd/po/Makefile &&
+	cp $CROSS_DIR/patch/MakeNothing.in $CROSS_DIR/src/binutils/gas/doc/Makefile &&
+	cp $CROSS_DIR/patch/MakeNothing.in $CROSS_DIR/src/binutils/binutils/doc/Makefile &&
+	make MAKEINFO=true MAKEINFOHTML=true TEXI2DVI=true TEXI2PDF=true DVIPS=true && 
+	make MAKEINFO=true MAKEINFOHTML=true TEXI2DVI=true TEXI2PDF=true DVIPS=true install
+)
+failOnError $? "building binutils"
+fi
+
+# Patch and build gcc
+if [ "$GCC_BUILD_DIR" = "" ]; then
+	export GCC_BUILD_DIR=$BUILD_DIRS_ROOT/build-gcc
+fi
+if [ ! -d $GCC_BUILD_DIR ]; then
+	mkdir $GCC_BUILD_DIR
+fi
+(
+	pwd &&
+	( grep -q jehanne src/gcc/gcc/config.gcc || patch -p1 < patch/gcc/gcc/config.gcc ) &&
+	cd src &&
+	cp ../patch/gcc/contrib/download_prerequisites gcc/contrib/download_prerequisites && 
+	( cd gcc && ./contrib/download_prerequisites ) &&
+	dynpatch 'gcc/config.sub' '-none)' &&
+	cp ../patch/gcc/gcc/config/jehanne.h gcc/gcc/config &&
+	dynpatch 'gcc/libstdc++-v3/crossconfig.m4' '  \*)' &&
+	cd gcc/libstdc++-v3 && autoconf -i && cd ../../ &&
+	( pwd && grep -q jehanne gcc/libgcc/config.host ||
+	  sed  -i -f ../patch/gcc/libgcc/config.host.sed gcc/libgcc/config.host 
+	) &&
+	dynpatch 'gcc/fixincludes/mkfixinc.sh' 'i\?86-\*-cygwin\*' &&
+	cd $GCC_BUILD_DIR &&
+	$CROSS_DIR/src/gcc/configure --disable-shared --enable-static --target=x86_64-jehanne --prefix=$JEHANNE/hacking/cross/toolchain --with-sysroot=$JEHANNE --enable-languages=c,c++ &&
+	make MAKEINFO=true MAKEINFOHTML=true TEXI2DVI=true TEXI2PDF=true DVIPS=true all-gcc all-target-libgcc && 
+	make MAKEINFO=true MAKEINFOHTML=true TEXI2DVI=true TEXI2PDF=true DVIPS=true install-gcc install-target-libgcc
+#	 &&
+#	make MAKEINFO=true MAKEINFOHTML=true TEXI2DVI=true TEXI2PDF=true DVIPS=true all-target-libstdc++-v3 &&
+#	make MAKEINFO=true MAKEINFOHTML=true TEXI2DVI=true TEXI2PDF=true DVIPS=true install-target-libstdc++-v3
+)
+failOnError $? "building gcc"
+
+# add sh
+ln -sf /bin/bash $JEHANNE/hacking/cross/toolchain/bin/x86_64-jehanne-sh
--- a/cross/patch/MakeNothing.in
+++ b/cross/patch/MakeNothing.in
@ -0,0 +1,4 @@
+all:
+	echo "make all does nothing HERE"
+install:
+	echo "make install does nothing HERE"
--- a/cross/patch/autoconf/build-aux/git-version-gen
+++ b/cross/patch/autoconf/build-aux/git-version-gen
@ -0,0 +1,2 @@
+#!/bin/sh
+echo "2.64" | tr -d '\012'
--- a/cross/patch/binutils/bfd/config.bfd
+++ b/cross/patch/binutils/bfd/config.bfd
@ -0,0 +1,7 @@
+#ifdef BFD64
+  x86_64-*-jehanne*)
+    targ_defvec=x86_64_elf64_vec
+    targ_selvecs=i386_elf32_vec
+    want64=true
+    ;;
+#endif
--- a/cross/patch/binutils/gas/configure.tgt
+++ b/cross/patch/binutils/gas/configure.tgt
@ -0,0 +1,3 @@
+  i386-*-jehanne*)			fmt=elf em=gnu ;;
+
+
--- a/cross/patch/binutils/ld/Makefile.am
+++ b/cross/patch/binutils/ld/Makefile.am
@ -0,0 +1,8 @@
+eelf_i386_jehanne.c: $(srcdir)/emulparams/elf_i386_jehanne.sh \
+  $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+	${GENSCRIPTS} elf_i386_jehanne "$(tdir_elf_i386_jehanne)"
+
+eelf_x86_64_jehanne.c: $(srcdir)/emulparams/elf_x86_64_jehanne.sh \
+  $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+	${GENSCRIPTS} elf_x86_64_jehanne "$(tdir_elf_x86_64_jehanne)"
+
--- a/cross/patch/binutils/ld/configure.tgt
+++ b/cross/patch/binutils/ld/configure.tgt
@ -0,0 +1,25 @@
+diff --git a/src/binutils/ld/configure.tgt b/src/binutils/ld/configure.tgt
+index 6b6bbf2..29b5f30 100644
+--- a/src/binutils/ld/configure.tgt
+++ b/src/binutils/ld/configure.tgt
+@@ -383,6 +383,9 @@ x86_64-*-nacl*)		targ_emul=elf32_x86_64_nacl
+ 			targ_extra_libpath=$targ_extra_emuls
+ 			tdir_elf_i386_nacl=`echo ${targ_alias} | sed -e 's/x86_64/i386/'`
+ 			;;
+x86_64*-jehanne*)	targ_emul=elf_x86_64_jehanne
+			targ_extra_emuls="elf_i386_jehanne elf_x86_64 elf_i386"
+			;;
+ i860-*-coff)		targ_emul=coff_i860 ;;
+ i860-stardent-sysv4* | i860-stardent-elf*)
+ 			targ_emul=elf32_i860
+@@ -852,6 +855,10 @@ ia64-*-aix*)
+   NATIVE_LIB_DIRS='/usr/local/lib /usr/lib/ia64l64 /lib /usr/lib'
+   ;;
+ 
+x86_64-*-jehanne*)
+  NATIVE_LIB_DIRS='/arch/amd64/lib'
+  ;;
+
+ sparc*-*-solaris2*)
+   NATIVE_LIB_DIRS='/usr/local/lib /usr/ccs/lib /lib /usr/lib'
+   ;;
--- a/cross/patch/binutils/ld/emulparams/elf_i386_jehanne.sh
+++ b/cross/patch/binutils/ld/emulparams/elf_i386_jehanne.sh
@ -0,0 +1,4 @@
+. ${srcdir}/emulparams/elf_i386.sh
+GENERATE_SHLIB_SCRIPT=
+GENERATE_PIE_SCRIPT=yes
+ENTRY=_main
--- a/cross/patch/binutils/ld/emulparams/elf_x86_64_jehanne.sh
+++ b/cross/patch/binutils/ld/emulparams/elf_x86_64_jehanne.sh
@ -0,0 +1,4 @@
+. ${srcdir}/emulparams/elf_x86_64.sh
+GENERATE_SHLIB_SCRIPT=
+GENERATE_PIE_SCRIPT=yes
+ENTRY=_main
--- a/cross/patch/gcc/config.sub
+++ b/cross/patch/gcc/config.sub
@ -0,0 +1,3 @@
+	-jehanne*)
+		os=-jehanne
+		;;
--- a/cross/patch/gcc/contrib/download_prerequisites
+++ b/cross/patch/gcc/contrib/download_prerequisites
@ -0,0 +1,71 @@
+#! /bin/sh
+
+# Download some prerequisites needed by gcc.
+# Run this from the top level of the gcc source tree and the gcc
+# build will do the right thing.
+#
+# (C) 2010 Free Software Foundation
+#
+# 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 of the License, 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 this program. If not, see http://www.gnu.org/licenses/.
+
+# If you want to build GCC with the Graphite loop optimizations,
+# set GRAPHITE_LOOP_OPT=yes to download optional prerequisties
+# ISL Library and CLooG.
+GRAPHITE_LOOP_OPT=yes
+
+if [ ! -e gcc/BASE-VER ] ; then
+	echo "You must run this script in the top level GCC source directory."
+	exit 1
+fi
+
+# Necessary to build GCC.
+MPFR=mpfr-2.4.2
+GMP=gmp-4.3.2
+MPC=mpc-0.8.1
+
+if [ ! -d $MPFR ]; then
+	wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$MPFR.tar.bz2 || exit 1
+	tar xjf $MPFR.tar.bz2 || exit 1
+	ln -sf $MPFR mpfr || exit 1
+fi
+
+if [ ! -d $GMP ]; then
+	wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$GMP.tar.bz2 || exit 1
+	tar xjf $GMP.tar.bz2  || exit 1
+	ln -sf $GMP gmp || exit 1
+fi
+
+if [ ! -d $MPC ]; then
+	wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$MPC.tar.gz || exit 1
+	tar xzf $MPC.tar.gz || exit 1
+	ln -sf $MPC mpc || exit 1
+fi
+
+# Necessary to build GCC with the Graphite loop optimizations.
+if [ "$GRAPHITE_LOOP_OPT" = "yes" ] ; then
+	ISL=isl-0.12.2
+	CLOOG=cloog-0.18.1
+
+	if [ ! -d $ISL ]; then
+		wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$ISL.tar.bz2 || exit 1
+		tar xjf $ISL.tar.bz2  || exit 1
+		ln -sf $ISL isl || exit 1
+	fi
+
+	if [ ! -d $CLOOG ]; then
+		wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$CLOOG.tar.gz || exit 1
+		tar xzf $CLOOG.tar.gz || exit 1
+		ln -sf $CLOOG cloog || exit 1
+	fi
+fi
--- a/cross/patch/gcc/fixincludes/mkfixinc.sh
+++ b/cross/patch/gcc/fixincludes/mkfixinc.sh
@ -0,0 +1 @@
+    *-jehanne* | \
--- a/cross/patch/gcc/gcc/config.gcc
+++ b/cross/patch/gcc/gcc/config.gcc
@ -0,0 +1,31 @@
+diff --git a/src/gcc/gcc/config.gcc b/src/gcc/gcc/config.gcc
+index f02ddbd..e5ebfe0 100644
+--- a/src/gcc/gcc/config.gcc
+++ b/src/gcc/gcc/config.gcc
+@@ -862,6 +862,16 @@ case ${target} in
+     tmake_file="$tmake_file vms/t-vmsnative"
+   fi
+   ;;
+*-*-jehanne*)
+  gas=yes
+  gnu_ld=yes
+  default_use_cxa_atexit=yes
+  case $target in
+  x86_64-*)
+    native_system_header_dir="/arch/amd64/include"
+    ;;
+  esac
+  ;;
+ *-*-vxworks*)
+   tmake_file=t-vxworks
+   xm_defines=POSIX
+@@ -1347,6 +1357,9 @@ x86_64-*-darwin*)
+ i[34567]86-*-elf*)
+ 	tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h newlib-stdint.h i386/i386elf.h"
+ 	;;
+x86_64-*-jehanne*)
+	tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h glibc-stdint.h i386/i386elf.h i386/x86-64.h jehanne.h"
+	;;
+ x86_64-*-elf*)
+ 	tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h newlib-stdint.h i386/i386elf.h i386/x86-64.h"
+ 	;;
--- a/cross/patch/gcc/gcc/config/jehanne.h
+++ b/cross/patch/gcc/gcc/config/jehanne.h
@ -0,0 +1,88 @@
+/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne 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, version 2 of the License.
+ *
+ * Jehanne 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 Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#undef TARGET_JEHANNE
+#define TARGET_JEHANNE 1
+
+/* Default arguments you want when running x86_64-jehanne-gcc */
+#undef LIB_SPEC
+#define LIB_SPEC "-lc"
+
+#undef STANDARD_STARTFILE_PREFIX
+#define STANDARD_STARTFILE_PREFIX "/arch/amd64/lib/"
+
+#undef MD_STARTFILE_PREFIX
+#define MD_STARTFILE_PREFIX "/arch/amd64/lib/"
+
+#undef GPLUSPLUS_INCLUDE_DIR
+#define GPLUSPLUS_INCLUDE_DIR "/posix/include/g++"
+
+#undef GCC_INCLUDE_DIR
+#define GCC_INCLUDE_DIR "/posix/include/gcc"
+
+/* Architecture specific header (u.h) goes here (from config.gcc) */
+#define ARCH_INCLUDE_DIR NATIVE_SYSTEM_HEADER_DIR 
+
+/* The default include dir is /sys/include but... */
+#define PORTABLE_INCLUDE_DIR "/sys/include"
+
+/* ...we have to wrap libc.h and stdio.h with POSIX headers */
+#define POSIX_INCLUDE_DIR "/sys/include/apw"
+
+#undef INCLUDE_DEFAULTS
+#define INCLUDE_DEFAULTS				\
+  {							\
+    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, 1, 0 },	\
+    { GCC_INCLUDE_DIR, 0, 0, 0, 1, 0 },			\
+    { POSIX_INCLUDE_DIR, 0, 0, 0, 1, 0 },		\
+    { ARCH_INCLUDE_DIR, 0, 0, 0, 1, 0 },		\
+    { PORTABLE_INCLUDE_DIR, 0, 0, 0, 1, 0 },		\
+    { ".", 0, 0, 0, 1, 0 },				\
+    { 0, 0, 0, 0, 0, 0 }				\
+  }
+
+/* Files that are linked before user code.
+   The %s tells gcc to look for these files in the library directory. */
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
+ 
+/* Files that are linked after user code. */
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
+ 
+/* Don't automatically add extern "C" { } around header files. */
+#undef  NO_IMPLICIT_EXTERN_C
+#define NO_IMPLICIT_EXTERN_C 1
+
+/* Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67132 */
+#undef	WCHAR_TYPE
+#define WCHAR_TYPE "unsigned int"
+#undef	WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef  LINK_GCC_C_SEQUENCE_SPEC
+#define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
+
+/* Additional predefined macros. */
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS()      \
+  do {                                \
+    builtin_define ("__jehanne__");      \
+    builtin_assert ("system=jehanne");   \
+  } while(0);
+
--- a/cross/patch/gcc/libgcc/config.host
+++ b/cross/patch/gcc/libgcc/config.host
@ -0,0 +1,4 @@
+x86_64-*-jehanne*)
+	extra_parts="$extra_parts crtbegin.o crtend.o"
+	tmake_file="$tmake_file i386/t-crtstuff t-crtstuff-pic t-libgcc-pic"
+	;;
--- a/cross/patch/gcc/libgcc/config.host.sed
+++ b/cross/patch/gcc/libgcc/config.host.sed
@ -0,0 +1,3 @@
+/enable_execute_stack=enable-execute-stack-empty.c;/,/Configuration ${host} not supported/{
+	/^case ${host} in$/r ../patch/gcc/libgcc/config.host
+}
--- a/cross/patch/gcc/libstdc++-v3/crossconfig.m4
+++ b/cross/patch/gcc/libstdc++-v3/crossconfig.m4
@ -0,0 +1,6 @@
+  *-jehanne*)
+    GLIBCXX_CHECK_COMPILER_FEATURES
+    GLIBCXX_CHECK_LINKER_FEATURES
+    GLIBCXX_CHECK_MATH_SUPPORT
+    GLIBCXX_CHECK_STDLIB_SUPPORT
+    ;;
--- a/cross/src/.gitignore
+++ b/cross/src/.gitignore
@ -0,0 +1,7 @@
+gcc
+binutils
+autoconf
+automake
+libtool
+m4
+build-*
--- a/cross/src/fetch.json
+++ b/cross/src/fetch.json
@ -0,0 +1,62 @@
+{
+	"autoconf" : {
+		"Upstream":"https://ftp.gnu.org/gnu/autoconf/autoconf-2.64.tar.bz2",
+		"Digest": {
+			"sha256":"872f4cadf12e7e7c8a2414e047fdff26b517c7f1a977d72433c124d0d3acaa85"
+		},
+		"Compress":"bzip2",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
+	},
+	"m4": {
+		"Upstream":"https://ftp.gnu.org/gnu/m4/m4-1.4.14.tar.bz2",
+		"Digest": {
+			"sha256":"0885ffa93256353a96b1cf0bcbc4d639ed09953b687e6cc412c4048e656f4dd2"
+		},
+		"Compress":"bzip2",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
+	},
+	"automake": {
+		"Upstream":"https://ftp.gnu.org/gnu/automake/automake-1.11.1.tar.bz2",
+		"Digest": {
+			"sha256":"5b159d3c0e0a1f87de71b68bcb9f1a1c49e9e71749c9b723f17e2e1e0295c7ae"
+		},
+		"Compress":"bzip2",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
+	},
+	"libtool": {
+		"Upstream":"https://ftp.gnu.org/gnu/libtool/libtool-2.4.tar.gz",
+		"Digest": {
+			"sha256":"13df57ab63a94e196c5d6e95d64e53262834fe780d5e82c28f177f9f71ddf62e"
+		},
+		"Compress":"gzip",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
+	},
+	"binutils": {
+		"Upstream":"https://ftp.gnu.org/gnu/binutils/binutils-2.26.tar.bz2",
+		"Digest": {
+			"sha256":"c2ace41809542f5237afc7e3b8f32bb92bc7bc53c6232a84463c423b0714ecd9"
+		},
+		"Compress":"bzip2",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
+	},
+	"gcc": {
+		"Upstream":"https://ftp.gnu.org/gnu/gcc/gcc-4.9.4/gcc-4.9.4.tar.bz2",
+		"Digest": {
+			"sha256":"6c11d292cd01b294f9f84c9a59c230d80e9e4a47e5c6355f046bb36d4f358092"
+		},
+		"Compress":"bzip2",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
+	}
+}
--- a/cross/tmp/.gitignore
+++ b/cross/tmp/.gitignore
@ -0,0 +1,2 @@
+*
+!.gitignore
--- a/cross/toolchain/.gitignore
+++ b/cross/toolchain/.gitignore
@ -0,0 +1,3 @@
+*
+!.gitignore
+
--- a/devshell.sh
+++ b/devshell.sh
@ -1,6 +1,10 @@
 #!/bin/bash
 export JEHANNE=`git rev-parse --show-toplevel`
 export PATH="$JEHANNE/hacking/bin:$PATH"
+export PATH="$JEHANNE/hacking/third_party/src/github.com/JehanneOS/devtools-kencc/bin:$PATH"
+export PATH="$JEHANNE/hacking/cross/toolchain/bin:$PATH"
 export ARCH=amd64

+export TOOLPREFIX=x86_64-jehanne-
+
 bash --rcfile <(cat ~/.bashrc; echo 'PS1="JehanneDEV $PS1"')
--- a/disk-boot-update.sh
+++ b/disk-boot-update.sh
@ -0,0 +1,50 @@
+#!/bin/bash
+
+if [ "$JEHANNE" = "" ]; then
+	echo $0 requires the shell started by ./hacking/devshell.sh
+	exit 1
+fi
+
+if [ "$SYSLINUXBIOS" == "" ]; then
+	export SYSLINUXBIOS=/usr/lib/syslinux/modules/bios/ # GNU/Linux Debian way
+fi
+if [ ! -d "$SYSLINUXBIOS" ]; then
+	echo 'Missing $SYSLINUXBIOS: install syslinux-utils or set it to the proper path.'
+	exit 1
+fi
+
+if [ -d $JEHANNE/hacking/disk-setup/bios/ ]; then
+	rm $JEHANNE/hacking/disk-setup/bios/*
+else
+	mkdir $JEHANNE/hacking/disk-setup/bios/
+fi
+cp $SYSLINUXBIOS/lib* $JEHANNE/hacking/disk-setup/bios/
+cp $SYSLINUXBIOS/elf.c32 $JEHANNE/hacking/disk-setup/bios/
+cp $SYSLINUXBIOS/mboot.c32 $JEHANNE/hacking/disk-setup/bios/
+cp $SYSLINUXBIOS/menu.c32 $JEHANNE/hacking/disk-setup/bios/
+
+# Locate the disk
+if [ "$DISK" == "" ]; then
+	export DISK=$JEHANNE/hacking/sample-disk.img
+fi
+
+if [ ! -b $DISK ] && [ ! -f $DISK ]; then
+	echo "Cannot find DISK to update ($DISK): set the DISK variable"
+	exit 1
+fi
+
+export KERNEL=$JEHANNE/hacking/bin/workhorse.32bit
+export KERNDIR=$JEHANNE/hacking/bin/
+
+# install everything
+cat << EOF | runqemu
+disk/fdisk -p /dev/sdE0/data >> /dev/sdE0/ctl
+disk/prep -p /dev/sdE0/plan9 >> /dev/sdE0/ctl
+cat /dev/sdE0/ctl
+
+disk/format -d /dev/sdE0/dos /hacking/disk-setup/syslinux.cfg /hacking/disk-setup/bios/* /arch/amd64/kern/initrd /arch/amd64/kern/jehanne.32bit
+
+EOF
+syslinux --offset $((2048*512)) $DISK
+dd bs=440 count=1 conv=notrunc if=/usr/lib/syslinux/mbr/mbr.bin of=$DISK
+
--- a/disk-create.sh
+++ b/disk-create.sh
@ -0,0 +1,124 @@
+#!/bin/bash
+
+if [ "$JEHANNE" = "" ]; then
+	echo $0 requires the shell started by ./hacking/devshell.sh
+	exit 1
+fi
+
+if [ "$SYSLINUXBIOS" == "" ]; then
+	export SYSLINUXBIOS=/usr/lib/syslinux/modules/bios/ # GNU/Linux Debian way
+fi
+if [ ! -d "$SYSLINUXBIOS" ]; then
+	echo 'Missing $SYSLINUXBIOS: install syslinux-utils or set it to the proper path.'
+	exit 1
+fi
+
+if [ -d $JEHANNE/hacking/disk-setup/bios/ ]; then
+	rm $JEHANNE/hacking/disk-setup/bios/*
+else
+	mkdir $JEHANNE/hacking/disk-setup/bios/
+fi
+cp $SYSLINUXBIOS/lib* $JEHANNE/hacking/disk-setup/bios/
+cp $SYSLINUXBIOS/elf.c32 $JEHANNE/hacking/disk-setup/bios/
+cp $SYSLINUXBIOS/mboot.c32 $JEHANNE/hacking/disk-setup/bios/
+cp $SYSLINUXBIOS/menu.c32 $JEHANNE/hacking/disk-setup/bios/
+
+# Create the data disk
+if [ "$DISK" == "" ]; then
+	export DISK=$JEHANNE/hacking/sample-disk.img
+fi
+
+
+if [ ! -f $DISK ]; then
+	qemu-img create $DISK 4G
+
+	sed -e 's/^\s*\([\+0-9a-zA-Z]*\)[ ].*/\1/' << EOF | /sbin/fdisk $DISK
+    o     #clear partition table
+    n     #new partition
+    p     #primary partition
+    1     #partition 1
+          #start at beginning of disk
+    +40M  #reserve 40 megabytes
+    t     #change type
+    c     #W95 FAT32 (LBA)
+    a     #make it bootable
+    n     #new partition
+    p     #primary partition
+    2     #partition 2
+          #start at first free sector
+          #end at the end of disk
+    t     #change type
+    2     #partition 2
+    39    #Plan 9
+    p     #print partition table
+    w     #write partition table
+    q     #quit
+EOF
+
+export KERNEL=$JEHANNE/hacking/bin/workhorse.32bit
+export KERNDIR=$JEHANNE/hacking/bin/
+
+	# install everything
+	cat << EOF | runqemu
+disk/fdisk -p /dev/sdE0/data >> /dev/sdE0/ctl
+disk/prep -w -a nvram -a fs /dev/sdE0/plan9
+disk/prep -p /dev/sdE0/plan9 >> /dev/sdE0/ctl
+cat /dev/sdE0/ctl
+
+disk/format -d /dev/sdE0/dos /hacking/disk-setup/syslinux.cfg /hacking/disk-setup/bios/* /arch/amd64/kern/initrd /arch/amd64/kern/jehanne.32bit
+
+dd -if /hacking/nvram -of /dev/sdE0/nvram
+
+hjfs -n hjfs -Srf /dev/sdE0/fs
+/hacking/disk-setup/configure-hjfs >>/srv/hjfs.cmd
+hjfs -n hjfs -Sf /dev/sdE0/fs
+mount -c /srv/hjfs /n/newfs
+cd /n/newfs
+cd cfg
+dircp /root/cfg .
+cd /n/newfs
+mkdir arch
+cd arch
+dircp /root/arch .
+cd /n/newfs
+mkdir lib
+cd lib
+dircp /root/lib .
+cd /n/newfs
+mkdir mnt
+cd mnt
+mkdir temp
+mkdir term
+mkdir acme
+mkdir wsys
+cd /n/newfs
+mkdir usr
+cd usr
+dircp /root/usr .
+cd /n/newfs
+mkdir sys
+cd sys
+mkdir include
+mkdir src
+dircp /root/sys/src src/
+dircp /root/sys/include include/
+mkdir log
+cd /n/newfs
+mkdir qa
+cd qa
+dircp /root/qa .
+cd /n/newfs
+lc
+unmount /n/newfs
+echo df >> /srv/hjfs.cmd
+echo sync >> /srv/hjfs.cmd
+sleep 60
+echo halt >> /srv/hjfs.cmd
+sleep 20
+EOF
+	syslinux --offset $((2048*512)) $DISK
+	dd bs=440 count=1 conv=notrunc if=/usr/lib/syslinux/mbr/mbr.bin of=$DISK
+else
+	echo Root disk already exists: $DISK
+fi
+
--- a/disk-get.sh
+++ b/disk-get.sh
@ -0,0 +1,48 @@
+#!/bin/bash
+
+if [ "$JEHANNE" = "" ]; then
+	echo $0 requires the shell started by ./hacking/devshell.sh
+	exit 1
+fi
+
+if [ "$DISK" == "" ]; then
+	export DISK=$JEHANNE/hacking/sample-disk.img
+fi
+
+if [ ! -f $DISK ] && [ ! -b $DISK ]; then
+	echo "Cannot find DISK to update ($DISK): set the DISK variable"
+	exit 1
+fi
+
+export KERNEL=$JEHANNE/hacking/bin/workhorse.32bit
+export KERNDIR=$JEHANNE/hacking/bin/
+
+# install everything
+cat > $JEHANNE/tmp/files.list << EOF
+disk/fdisk -p /dev/sdE0/data >> /dev/sdE0/ctl
+disk/prep -p /dev/sdE0/plan9 >> /dev/sdE0/ctl
+cat /dev/sdE0/ctl
+
+hjfs -n hjfs -Sf /dev/sdE0/fs
+mount -c /srv/hjfs /n/newfs
+
+EOF
+
+for var in "$@"
+do
+    echo "cp /n/newfs/$var /tmp/$var" >> $JEHANNE/tmp/files.list
+done
+
+cat >> $JEHANNE/tmp/files.list << EOF
+
+unmount /n/newfs
+echo df >> /srv/hjfs.cmd
+echo sync >> /srv/hjfs.cmd
+sleep 60
+echo halt >> /srv/hjfs.cmd
+sleep 20
+
+EOF
+
+cat $JEHANNE/tmp/files.list | runqemu
+rm $JEHANNE/tmp/files.list
--- a/disk-setup/configure-hjfs
+++ b/disk-setup/configure-hjfs
@ -0,0 +1,15 @@
+#!/cmd/rc
+
+echo echo on
+echo create /dist sys sys 775 d
+echo create /tmp sys sys 775 d
+echo create /usr sys sys 775 d
+echo newuser glenda
+echo newuser adm +glenda
+echo newuser sys +glenda
+echo newuser upas +glenda
+echo sync
+echo echo off
+echo halt
+sleep 2
+
--- a/disk-setup/flproto
+++ b/disk-setup/flproto
@ -0,0 +1,6 @@
+srv -p fscons
+srv fossil
+fsys main config /dev/sdE1/fossil
+fsys main open -AWP
+fsys main
+
--- a/disk-setup/syslinux.cfg
+++ b/disk-setup/syslinux.cfg
@ -0,0 +1,19 @@
+DEFAULT menu.c32
+
+# to force boot jump to a rc shell (without executing /lib/namespace, thus no command in /cmd), add 
+#   init='/arch/amd64/cmd/rc -i'
+# to the APPEND line (before ---)
+# NOTE: double quotes won't work, only singe quotes are accepted
+
+LABEL FromUSB
+	KERNEL mboot.c32
+	APPEND jehanne.32bit nobootprompt=local!/shr/usb/sdU67d95 maxcores=1024 auth=10.0.0.203 nvram=/shr/usb/sdU67d95/nvram nvrlen=512 nvroff=0 --- initrd
+
+LABEL FromAHCI
+	KERNEL mboot.c32 
+	APPEND jehanne.32bit nobootprompt=local!#S/sdE0 maxcores=1024 auth=10.0.0.1 nvram=#S/sdE0/nvram nvrlen=512 nvroff=0 --- initrd
+
+LABEL FromIDE
+	KERNEL mboot.c32 
+	APPEND jehanne.32bit nobootprompt=local!#S/sdC0 maxcores=1024 auth=10.0.0.1 nvram=#S/sdC0/nvram nvrlen=512 nvroff=0 --- initrd
+
--- a/disk-setup/venti.conf
+++ b/disk-setup/venti.conf
@ -0,0 +1,4 @@
+index main
+isect /dev/sdE1/isect
+arenas /dev/sdE1/arenas
+
--- a/disk-update.sh
+++ b/disk-update.sh
@ -0,0 +1,48 @@
+#!/bin/bash
+
+if [ "$JEHANNE" = "" ]; then
+	echo $0 requires the shell started by ./hacking/devshell.sh
+	exit 1
+fi
+
+if [ "$DISK" == "" ]; then
+	export DISK=$JEHANNE/hacking/sample-disk.img
+fi
+
+if [ ! -f $DISK ] && [ ! -b $DISK ]; then
+	echo "Cannot find DISK to update ($DISK): set the DISK variable"
+	exit 1
+fi
+
+export KERNEL=$JEHANNE/hacking/bin/workhorse.32bit
+export KERNDIR=$JEHANNE/hacking/bin/
+
+# install everything
+cat > $JEHANNE/tmp/files.list << EOF
+disk/fdisk -p /dev/sdE0/data >> /dev/sdE0/ctl
+disk/prep -p /dev/sdE0/plan9 >> /dev/sdE0/ctl
+cat /dev/sdE0/ctl
+
+hjfs -n hjfs -Sf /dev/sdE0/fs
+mount -c /srv/hjfs /n/newfs
+
+EOF
+
+for var in "$@"
+do
+    echo "cp /$var /n/newfs/$var" >> $JEHANNE/tmp/files.list
+done
+
+cat >> $JEHANNE/tmp/files.list << EOF
+
+unmount /n/newfs
+echo df >> /srv/hjfs.cmd
+echo sync >> /srv/hjfs.cmd
+sleep 60
+echo halt >> /srv/hjfs.cmd
+sleep 20
+
+EOF
+
+cat $JEHANNE/tmp/files.list | runqemu
+rm $JEHANNE/tmp/files.list
--- a/drawterm.sh
+++ b/drawterm.sh
@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [ "$JEHANNE" = "" ]; then
+	echo ./hacking/drawterm.sh requires the shell started by ./hacking/devshell.sh
+	exit 1
+fi
+drawterm -a 127.0.0.1 -c 127.0.0.1 -u glenda
--- a/290
+++ b/290
@ -0,0 +1,290 @@
+set pagination off
+set logging file ../qemu-gdb.log
+set logging overwrite on
+set logging on
+
+define log_mach_proc
+	if up != 0 
+		printf "%s %d ", up->text, up->pid
+	end
+	if m != 0
+		printf "(mach %d) ", m->machno
+	end
+end
+
+define log_syscall
+	log_mach_proc
+	printf "\n"
+	c
+end
+
+define log_syscalls
+
+	# sysbind
+	b ../port/sysfile.c:1167
+	commands
+	log_syscall
+	end
+
+	# syschdir
+	b ../port/sysfile.c:1027
+	commands
+	log_syscall
+	end
+
+	# sysclose
+	b ../port/sysfile.c:375
+	commands
+	log_syscall
+	end
+
+	# syscreate
+	b ../port/sysfile.c:1263
+	commands
+	log_syscall
+	end
+
+	# sysdup
+	b ../port/sysfile.c:263
+	commands
+	log_syscall
+	end
+
+	# sysfd2path
+	b ../port/sysfile.c:191
+	commands
+	log_syscall
+	end
+
+	# sysfstat
+	b ../port/sysfile.c:999
+	commands
+	log_syscall
+	end
+
+	# sysfwstat
+	b ../port/sysfile.c:1371
+	commands
+	log_syscall
+	end
+
+	# sysmount
+	b ../port/sysfile.c:1192
+	commands
+	log_syscall
+	end
+
+	# sysopen
+	b ../port/sysfile.c:311
+	commands
+	log_syscall
+	end
+
+	# syspipe
+	b ../port/sysfile.c:214
+	commands
+	log_syscall
+	end
+
+	# syspread
+	b ../port/sysfile.c:787
+	commands
+	log_syscall
+	end
+
+	# syspwrite
+	b ../port/sysfile.c:857
+	commands
+	log_syscall
+	end
+
+	# sysremove
+	b ../port/sysfile.c:1293
+	commands
+	log_syscall
+	end
+
+	# sysseek
+	b ../port/sysfile.c:929
+	commands
+	log_syscall
+	end
+
+	# sysunmount
+	b ../port/sysfile.c:1210
+	commands
+	log_syscall
+	end
+
+	# sysfversion
+	b ../port/sysauth.c:50
+	commands
+	log_syscall
+	end
+
+	# sysfauth
+	b ../port/sysauth.c:83
+	commands
+	log_syscall
+	end
+
+	# sysrfork
+	b ../port/sysproc.c:36
+	commands
+	log_syscall
+	end
+
+	# sysalarm
+	b ../port/sysproc.c:656
+	commands
+	log_syscall
+	end
+
+	# sysawake
+	b ../port/sysproc.c:682
+	commands
+	printf "sys->ticks %lld ms %lld \n", sys->ticks, ms
+	log_syscall
+	end
+
+	# sysawait
+	b ../port/sysproc.c:729
+	commands
+	log_syscall
+	end
+
+	# syserrstr
+	b ../port/sysproc.c:791
+	commands
+	log_syscall
+	end
+
+	# sysnotify
+	b ../port/sysproc.c:809
+	commands
+	log_syscall
+	end
+
+	# sysexec
+	b ../port/sysproc.c:284
+	commands
+	log_syscall
+	end
+
+	# sysexits
+	b ../port/sysproc.c:702
+	commands
+	if status != 0
+		printf "status: %s", status
+	else
+		printf "status: (nil)"
+	end
+	log_syscall
+	end
+
+	# sysnoted
+	b ../port/sysproc.c:840
+	commands
+	log_syscall
+	end
+
+	# sysrendezvous
+	b ../port/sysproc.c:861
+	commands
+	printf "tag %llu rendval %llu\n", tag, rendval
+	printf "sys->ticks %lld lastWakeup %lld pendingWakeup %lld \n", sys->ticks, up->lastWakeup, up->pendingWakeup
+	log_syscall
+	end
+
+	# sysnotify
+	b ../port/sysproc.c:820
+	commands
+	log_syscall
+	end
+
+	# sysnsec
+	b ../port/sysproc.c:1233
+	commands
+	log_syscall
+	end
+
+	# syssemacquire
+	b ../port/sysproc.c:1167
+	commands
+	log_syscall
+	end
+
+	# syssemrelease
+	b ../port/sysproc.c:1222
+	commands
+	log_syscall
+	end
+
+	# syssleep
+	b ../port/sysproc.c:640
+	commands
+	printf "ms %lld\n", ms
+	log_syscall
+	end
+
+	# systsemacquire
+	b ../port/sysproc.c:1193
+	commands
+	log_syscall
+	end
+
+end
+
+define debug_awake
+	# awakekproc
+	b ../port/awake.c:139
+	commands
+		printf "%s %d ", p->text, p->pid
+		printf "p->state %d p->lastWakeup %lld toAwake->time %d \n", p->state, p->lastWakeup, toAwake->time
+		c
+	end
+
+	# sysawake
+	b ../port/sysproc.c:682
+	commands
+	printf "sys->ticks %lld ms %lld \n", sys->ticks, ms
+	log_syscall
+	end
+
+	# sysrendezvous
+	b ../port/sysproc.c:861
+	commands
+	printf "ENTER: \n tag %llu rendval %llu\n", tag, rendval
+	printf "sys->ticks %lld lastWakeup %lld pendingWakeup %lld \n", sys->ticks, up->lastWakeup, up->pendingWakeup
+	log_syscall
+	end
+
+	# sysrendezvous
+	b ../port/sysproc.c:879
+	commands
+	printf "EXIT on match: \n tag %llu rendval %llu\n", tag, rendval
+	printf "sys->ticks %lld lastWakeup %lld pendingWakeup %lld \n", sys->ticks, up->lastWakeup, up->pendingWakeup
+	log_syscall
+	end
+
+	# sysrendezvous
+	b ../port/sysproc.c:886
+	commands
+	printf "EXIT on awaken: \n tag %llu rendval %llu\n", tag, rendval
+	printf "sys->ticks %lld lastWakeup %lld pendingWakeup %lld \n", sys->ticks, up->lastWakeup, up->pendingWakeup
+	log_syscall
+	end
+
+	# sysrendezvous
+	b ../port/sysproc.c:902
+	commands
+	printf "EXIT after wait: \n tag %llu rendval %llu\n", tag, rendval
+	printf "sys->ticks %lld lastWakeup %lld pendingWakeup %lld \n", sys->ticks, up->lastWakeup, up->pendingWakeup
+	log_syscall
+	end
+
+end
+
+#log_syscalls
+
+
--- a/runDisk.sh
+++ b/runDisk.sh
@ -0,0 +1,74 @@
+#!/bin/sh
+
+export SDL_VIDEO_X11_DGAMOUSE=0 # see https://wiki.archlinux.org/index.php/QEMU#Mouse_cursor_is_jittery_or_erratic
+
+if [ "$JEHANNE" = "" ]; then
+        echo $0 requires the shell started by ./hacking/devshell.sh
+        exit 1
+fi
+
+trap : 2
+
+export machineflag=pc
+if [ "$(uname)" = "Linux" ] && [ -e /dev/kvm ]; then
+        export kvmflag='-enable-kvm'
+        export machineflag='pc,accel=kvm'
+        if [ ! -w /dev/kvm ]; then
+                # we don't have access as a regular user
+                export kvmdo=sudo
+        fi
+fi
+
+if [ "$1" = "" ]; then
+	if [ "$DISK" = "" ]; then
+		if [ -f $JEHANNE/hacking/sample-disk.img ]; then
+			export DISK=$JEHANNE/hacking/sample-disk.img
+		else
+			echo No disk image provided: usage: $0 path/to/disk
+			exit 1
+		fi
+	else
+		echo No disk image provided: usage: $0 path/to/disk
+		exit 1
+	fi
+else
+	export DISK="$1"
+fi
+
+case "$DISK" in
+	*:*)
+		bootDisk="-usb -usbdevice host:$DISK"
+		;;
+	*)
+		bootDisk="-drive if=none,id=usbstick,file=$DISK -usb -readconfig /usr/share/doc/qemu-system-x86/common/ich9-ehci-uhci.cfg -device usb-host,bus=usb-bus.0,hostbus=3,hostport=1 -device usb-host,bus=usb-bus.0,hostbus=3,hostport=1 -device usb-storage,bus=ehci.0,drive=usbstick "
+		;;
+esac
+#bootDisk="-device ahci,id=ahci -drive id=boot,file=$DISK,index=0,cache=writeback,if=none -device ide-drive,drive=boot,bus=ahci.0"
+bootDisk="-global ide-drive.physical_block_size=4096 -drive file=$DISK,if=ide,index=0,media=disk"
+
+cd $JEHANNE/arch/$ARCH/kern/
+read -r cmd <<EOF
+$kvmdo qemu-system-x86_64 -s -cpu Haswell -smp 2 -m 2048 $kvmflag \
+-serial stdio \
+--machine $machineflag \
+$bootDisk \
+-net nic,model=rtl8139 \
+-net user,hostfwd=tcp::5555-:1522 \
+-net dump,file=/tmp/vm0.pcap \
+-redir tcp:9999::9 \
+-redir tcp:17010::17010 \
+-redir tcp:17013::17013
+EOF
+
+# To enable qemu log:
+#-no-reboot -D $JEHANNE/../qemu.log -d int,cpu_reset,in_asm \
+
+# To wait for a gdb connection prepend to -append "waitgdb"
+# then from gdb:
+#     (gdb) target remote :1234
+#     (gdb) p at=1
+# now you can set your breakpoints and continue
+
+echo $cmd
+eval $cmd
+
--- a/runOver9P.sh
+++ b/runOver9P.sh
@ -1,5 +1,15 @@
 #!/bin/sh

+export SDL_VIDEO_X11_DGAMOUSE=0 # see https://wiki.archlinux.org/index.php/QEMU#Mouse_cursor_is_jittery_or_erratic
+
+if [ "$JEHANNE" = "" ]; then
+        echo $0 requires the shell started by ./hacking/devshell.sh
+        exit 1
+fi
+if [ "$KERNEL" = "" ]; then
+	KERNEL="jehanne.32bit"
+fi
+
 trap : 2

 $JEHANNE/hacking/bin/ufs -root=$JEHANNE &
@ -15,21 +25,45 @@ if [ "$(uname)" = "Linux" ] && [ -e /dev/kvm ]; then
        fi
 fi

+export NVRAM=/boot/nvram
+export FS="nobootprompt=tcp fs=10.0.2.2 auth=10.0.2.2"
+
+if [ "$DISK" = "" ]; then
+	export DISK=$JEHANNE/hacking/sample-disk.img
+fi
+
+if [ -f $DISK ]; then
+	usbDev="-drive if=none,id=usbstick,file=$DISK -usb -device nec-usb-xhci,id=xhci -device usb-storage,bus=xhci.0,drive=usbstick"
+	usbDev="-drive if=none,id=usbstick,file=$DISK -usb -readconfig /usr/share/doc/qemu-system-x86/common/ich9-ehci-uhci.cfg -device usb-host,bus=usb-bus.0,hostbus=3,hostport=1 -device usb-host,bus=usb-bus.0,hostbus=3,hostport=1 -device usb-storage,bus=ehci.0,drive=usbstick "
+fi
+
 cd $JEHANNE/arch/$ARCH/kern/
 read -r cmd <<EOF
-$kvmdo qemu-system-x86_64 -s -cpu Opteron_G1 -smp 1 -m 2048 $kvmflag \
-serial stdio \
+$kvmdo qemu-system-x86_64 -s -cpu Haswell -smp 4 -m 2048 $kvmflag \
+-no-reboot -serial mon:stdio \
 --machine $machineflag \
+$bootDisk \
 -net nic,model=rtl8139 \
 -net user,hostfwd=tcp::5555-:1522 \
 -net dump,file=/tmp/vm0.pcap \
 -redir tcp:9999::9 \
 -redir tcp:17010::17010 \
 -redir tcp:17013::17013 \
-append "nobootprompt=tcp maxcores=1024 fs=10.0.2.2 auth=10.0.2.2 nvram=/boot/nvram nvrlen=512 nvroff=0" \
-kernel jehanne.32bit $*
+$usbDev \
+-append "maxcores=1024 nvram=$NVRAM nvrlen=512 nvroff=0 $FS $KAPPEND" \
+-initrd ./initrd \
+-kernel $KERNEL $*
 EOF

+# To enable qemu log:
+#-D $JEHANNE/../qemu.log -d int,cpu_reset,in_asm \
+
+# To wait for a gdb connection prepend to -append "waitgdb"
+# then from gdb:
+#     (gdb) target remote :1234
+#     (gdb) p at=1
+# now you can set your breakpoints and continue
+
 echo $cmd
 eval $cmd

--- a/src/jehanne/cmd/build/build.go
+++ b/src/jehanne/cmd/build/build.go
@ -29,6 +29,7 @@ import (
 	"path"
 	"path/filepath"
 	"regexp"
+	"sort"
 	"strings"
 )

@ -43,6 +44,7 @@ type kernconfig struct {
 }

 type kernel struct {
+	CodeFile string
 	Systab   string
 	Config   kernconfig
 	Ramfiles map[string]string
@ -89,9 +91,9 @@ func (bf *buildfile) UnmarshalJSON(s []byte) error {
 		b.Projects = adjust(b.Projects)
 		b.Libs = adjust(b.Libs)
 		b.Cflags = adjust(b.Cflags)
-		b.SourceFiles = adjust(b.SourceFiles)
-		b.SourceFilesCmd = adjust(b.SourceFilesCmd)
-		b.ObjectFiles = adjust(b.ObjectFiles)
+		b.SourceFiles = b.SourceFiles
+		b.SourceFilesCmd = b.SourceFilesCmd
+		b.ObjectFiles = b.ObjectFiles
 		b.Include = adjust(b.Include)
 		b.Install = fromRoot(b.Install)
 		for i, e := range b.Env {
@ -138,6 +140,15 @@ func failOn(err error) {
 	}
 }

+func isValueInList(value string, list []string) bool {
+	for _, v := range list {
+		if v == value {
+			return true
+		}
+	}
+	return false
+}
+
 func adjust(s []string) []string {
 	for i, v := range s {
 		s[i] = fromRoot(v)
@ -145,6 +156,18 @@ func adjust(s []string) []string {
 	return s
 }

+func buildEnv(b *build) func(string) string{
+	return func(v string) string {
+		search := v + "="
+		for _, s := range b.Env {
+			if strings.Index(s, search) == 0 {
+				return strings.Replace(s, search, "", 1)
+			}
+		}
+		return os.Getenv(v)
+	}
+}
+
 // return the given absolute path as an absolute path rooted at the jehanne tree.
 func fromRoot(p string) string {
 	p = os.ExpandEnv(p)
@ -179,6 +202,40 @@ func sh(cmd *exec.Cmd) {
 	failOn(shell.Run())
 }

+func mergeKernel(k *kernel, defaults *kernel) *kernel {
+	if k == nil {
+		return defaults
+	}
+	if defaults == nil {
+		return k
+	}
+
+	// The custom kernel Code will be added after the default from includes
+	// so that it has a chance to change de default behaviour.
+	k.Config.Code = append(defaults.Config.Code, k.Config.Code...)
+
+	k.Config.Dev = append(k.Config.Dev, defaults.Config.Dev...)
+	k.Config.Ip = append(k.Config.Ip, defaults.Config.Ip...)
+	k.Config.Link = append(k.Config.Link, defaults.Config.Link...)
+	k.Config.Sd = append(k.Config.Sd, defaults.Config.Sd...)
+	k.Config.Uart = append(k.Config.Uart, defaults.Config.Uart...)
+	k.Config.VGA = append(k.Config.VGA, defaults.Config.VGA...)
+
+	if k.CodeFile == "" {
+		k.CodeFile = defaults.CodeFile
+	}
+	if k.Systab == "" {
+		k.Systab = defaults.Systab
+	}
+	for name, path := range defaults.Ramfiles {
+		if _, ok := k.Ramfiles[name]; ok == false {
+			k.Ramfiles[name] = path
+		}
+	}
+
+	return k
+}
+
 func include(f string, b *build) {
 	if b.jsons[f] {
 		return
@ -203,6 +260,7 @@ func include(f string, b *build) {
 		b.SourceFilesCmd = append(b.SourceFilesCmd, build.SourceFilesCmd...)
 		b.Program += build.Program
 		b.Library += build.Library
+		b.Kernel = mergeKernel(b.Kernel, build.Kernel)
 		if build.Install != "" {
 			if b.Install != "" {
 				log.Fatalf("In file %s (target %s) included by %s (target %s): redefined Install.", f, n, build.path, build.name)
@ -244,7 +302,16 @@ func process(f string, r []*regexp.Regexp) []build {
 	d, err := ioutil.ReadFile(f)
 	failOn(err)
 	failOn(json.Unmarshal(d, &builds))
-	for n, build := range builds {
+
+	// Sort keys alphabetically (GoLang does not preserve the JSON order)
+	var keys []string
+	for n := range builds {
+		keys = append(keys, n)
+	}
+	sort.Strings(keys)
+
+	for _, n := range keys {
+		build := builds[n]
 		build.name = n
 		build.jsons = make(map[string]bool)
 		skip := true
@ -281,8 +348,15 @@ func buildkernel(b *build) {
 	if b.Kernel == nil {
 		return
 	}
+	envFunc := buildEnv(b)
+	for name, path := range b.Kernel.Ramfiles {
+		b.Kernel.Ramfiles[name] = os.Expand(path, envFunc);
+	}
 	codebuf := confcode(b.path, b.Kernel)
-	failOn(ioutil.WriteFile(b.name+".c", codebuf, 0666))
+	if b.Kernel.CodeFile == "" {
+		log.Fatalf("Missing Kernel.CodeFile in %v\n", b.path)
+	}
+	failOn(ioutil.WriteFile(b.Kernel.CodeFile, codebuf, 0666))
 }

 func wrapInQuote(args []string) []string {
@ -297,24 +371,57 @@ func wrapInQuote(args []string) []string {
 	return res
 }

+func convertLibPathsToArgs(b *build) []string {
+	libLocations := make([]string, 0)
+	args := make([]string, 0)
+	defaultLibLocation := fromRoot("/arch/$ARCH/lib")
+	for _, lib := range b.Libs {
+		ldir := filepath.Dir(lib)
+		if ldir != defaultLibLocation {
+			if !isValueInList(ldir, libLocations) {
+				libLocations = append(libLocations, ldir)
+				args = append(args, "-L", ldir)
+			}
+		}
+		lib = strings.Replace(lib, ldir + "/lib", "-l", 1)
+		lib = strings.Replace(lib, ".a", "", 1)
+		args = append(args, lib)
+	}
+	return args
+}
+
 func compile(b *build) {
 	log.Printf("Building %s\n", b.name)
 	// N.B. Plan 9 has a very well defined include structure, just three things:
 	// /amd64/include, /sys/include, .
-	args := b.Cflags
+	args := b.SourceFiles
+	args = append(args, b.Cflags...)
+	if !isValueInList("-c", b.Cflags) {
+		args = append(args, convertLibPathsToArgs(b)...)
+		args = append(args, b.Oflags...)
+	}
 	if len(b.SourceFilesCmd) > 0 {
 		for _, i := range b.SourceFilesCmd {
-			cmd := exec.Command(tools["cc"], append(args, i)...)
+			largs := make([]string, 3)
+			largs[0] = i
+			largs[1] = "-o"
+			largs[2] = strings.Replace(filepath.Base(i), filepath.Ext(i), "", 1)
+			cmd := exec.Command(tools["cc"], append(largs, args...)...)
 			run(b, *shellhack, cmd)
 		}
 		return
 	}
-	args = append(args, b.SourceFiles...)
+	if !isValueInList("-c", b.Cflags) {
+		args = append(args, "-o", b.Program)
+	}
 	cmd := exec.Command(tools["cc"], args...)
 	run(b, *shellhack, cmd)
 }

 func link(b *build) {
+	if !isValueInList("-c", b.Cflags) {
+		return
+	}
 	log.Printf("Linking %s\n", b.name)
 	if len(b.SourceFilesCmd) > 0 {
 		for _, n := range b.SourceFilesCmd {
@ -329,7 +436,6 @@ func link(b *build) {
 			o := f[:len(f)] + ".o"
 			args := []string{"-o", n, o}
 			args = append(args, b.Oflags...)
-			args = append(args, "-L", fromRoot("/arch/$ARCH/lib"))
 			args = append(args, b.Libs...)
 			run(b, *shellhack, exec.Command(tools["ld"], args...))
 		}
@ -338,7 +444,6 @@ func link(b *build) {
 	args := []string{"-o", b.Program}
 	args = append(args, b.ObjectFiles...)
 	args = append(args, b.Oflags...)
-	args = append(args, "-L", fromRoot("/arch/$ARCH/lib"))
 	args = append(args, b.Libs...)
 	run(b, *shellhack, exec.Command(tools["ld"], args...))
 }
@ -412,12 +517,12 @@ func projects(b *build, r []*regexp.Regexp) {
 	for _, v := range b.Projects {
 		f, _ := findBuildfile(v)
 		log.Printf("Doing %s\n", f)
-		project(f, r)
+		project(f, r, b)
 	}
 }

 // assumes we are in the wd of the project.
-func project(bf string, which []*regexp.Regexp) {
+func project(bf string, which []*regexp.Regexp, container *build) {
 	cwd, err := os.Getwd()
 	failOn(err)
 	debug("Start new project cwd is %v", cwd)
@ -430,11 +535,25 @@ func project(bf string, which []*regexp.Regexp) {
 	debug("Processing %v: %d target", root, len(builds))
 	for _, b := range builds {
 		debug("Processing %v: %v", b.name, b)
+		if container != nil {
+			b.Env = append(container.Env, b.Env...)
+		}
 		projects(&b, regexpAll)
 		for _, c := range b.Pre {
 			// this is a hack: we just pass the command through as an exec.Cmd
 			run(&b, true, exec.Command(c))
 		}
+		envFunc := buildEnv(&b);
+		b.Program = os.Expand(b.Program, envFunc)
+		for i, s := range b.SourceFiles {
+			b.SourceFiles[i] = fromRoot(os.Expand(s, envFunc));
+		}
+		for i, s := range b.SourceFilesCmd {
+			b.SourceFilesCmd[i] = fromRoot(os.Expand(s, envFunc));
+		}
+		for i, s := range b.ObjectFiles {
+			b.ObjectFiles[i] = fromRoot(os.Expand(s, envFunc));
+		}
 		buildkernel(&b)
 		if len(b.SourceFiles) > 0 || len(b.SourceFilesCmd) > 0 {
 			compile(&b)
@ -511,7 +630,7 @@ func main() {
 			re = append(re, rx)
 		}
 	}
-	project(bf, re)
+	project(bf, re, nil)
 }

 func findTools(toolprefix string) {
@ -520,7 +639,10 @@ func findTools(toolprefix string) {
 		if x := os.Getenv(strings.ToUpper(k)); x != "" {
 			v = x
 		}
-		v, err = exec.LookPath(toolprefix + v)
+		if v != "sh" {
+			v = toolprefix + v;
+		}
+		v, err = exec.LookPath(v)
 		failOn(err)
 		tools[k] = v
 	}
--- a/src/jehanne/cmd/build/codegen.go
+++ b/src/jehanne/cmd/build/codegen.go
@ -98,20 +98,6 @@ VGAcur* vgacur[] = {
 	nil,
 };

-Physseg physseg[8] = {
-	{
-		.attr = SG_SHARED,
-		.name = "shared",
-		.size = SEGMAXPG,
-	},
-	{
-		.attr = SG_BSS,
-		.name = "memory",
-		.size = SEGMAXPG,
-	},
-};
-int nphysseg = 8;
-
 {{ range .Config.Code }}{{ . }}
 {{ end }}

--- a/src/jehanne/cmd/fetch/fetch.go
+++ b/src/jehanne/cmd/fetch/fetch.go
@ -0,0 +1,197 @@
+package main
+
+import (
+	"archive/tar"
+	"bytes"
+	"compress/bzip2"
+	"compress/gzip"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/hex"
+	"encoding/json"
+	"hash"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"path"
+	"strings"
+)
+
+const (
+	dirPermissions   = 0755
+)
+
+type Fetch struct {
+	Upstream     string
+	Digest       map[string]string
+	Compress     string
+	RemovePrefix bool
+	Exclude      []string
+}
+
+func main() {
+
+	j, err := ioutil.ReadFile("fetch.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fetches := make(map[string]Fetch)
+	if err := json.Unmarshal(j, &fetches); err != nil {
+		log.Fatal(err)
+	}
+
+	for name, f := range(fetches) {
+		if _, err := os.Stat(name); err == nil {
+			log.Printf("Fetch: skip %v (already present)", name)
+		} else {
+			log.Printf("Fetch: %v from %v", name, f.Upstream)
+			if err := do(&f, name); err != nil {
+				log.Fatal(err)
+			}
+		}
+	}
+}
+
+func do(f *Fetch, name string) error {
+	fname := fetch(f)
+	s, err := os.Open(fname)
+	if err != nil {
+		return err
+	}
+	defer os.Remove(fname)
+
+	os.MkdirAll(name, dirPermissions)
+
+	var unZ io.Reader
+	switch f.Compress {
+	case "gzip":
+		unZ, err = gzip.NewReader(s)
+		if err != nil {
+			return err
+		}
+	case "bzip2":
+		unZ = bzip2.NewReader(s)
+	default:
+		unZ = s
+	}
+
+	ar := tar.NewReader(unZ)
+	h, err := ar.Next()
+untar:
+	for ; err == nil; h, err = ar.Next() {
+		n := h.Name
+		if f.RemovePrefix {
+			n = strings.SplitN(n, "/", 2)[1]
+		}
+		for _, ex := range f.Exclude {
+			if strings.HasPrefix(n, ex) {
+				continue untar
+			}
+		}
+		n = path.Join(name, n)
+		if h.FileInfo().IsDir() {
+			os.MkdirAll(n, dirPermissions)
+			continue
+		}
+		os.MkdirAll(path.Dir(n), dirPermissions)
+		out, err := os.Create(n)
+		if err != nil {
+			log.Println(err)
+			continue
+		}
+
+		if n, err := io.Copy(out, ar); n != h.Size || err != nil {
+			return err
+		}
+		out.Close()
+		if err := os.Chmod(n, h.FileInfo().Mode()); err != nil {
+			return err;
+		}
+	}
+	if err != io.EOF {
+		return err
+	}
+	return nil
+}
+
+type match struct {
+	hash.Hash
+	Good []byte
+	Name string
+}
+
+func (m match) OK() bool {
+	return bytes.Equal(m.Good, m.Hash.Sum(nil))
+}
+
+func fetch(v *Fetch) string {
+	if len(v.Digest) == 0 {
+		log.Fatal("no checksums specifed")
+	}
+
+	f, err := ioutil.TempFile("", "cmdVendor")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer f.Close()
+
+	req, err := http.NewRequest("GET", v.Upstream, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+	client := &http.Client{
+		Transport: &http.Transport{
+			Proxy:              http.ProxyFromEnvironment,
+			DisableCompression: true,
+		},
+	}
+	res, err := client.Do(req)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer res.Body.Close()
+
+	var digests []match
+	for k, v := range v.Digest {
+		g, err := hex.DecodeString(v)
+		if err != nil {
+			log.Fatal(err)
+		}
+		switch k {
+		case "sha224":
+			digests = append(digests, match{sha256.New224(), g, k})
+		case "sha256":
+			digests = append(digests, match{sha256.New(), g, k})
+		case "sha384":
+			digests = append(digests, match{sha512.New384(), g, k})
+		case "sha512":
+			digests = append(digests, match{sha512.New(), g, k})
+		}
+	}
+	ws := make([]io.Writer, len(digests))
+	for i := range digests {
+		ws[i] = digests[i]
+	}
+	w := io.MultiWriter(ws...)
+
+	if _, err := io.Copy(f, io.TeeReader(res.Body, w)); err != nil {
+		log.Fatal(err)
+	}
+	for _, h := range digests {
+		if !h.OK() {
+			log.Fatalf("mismatched %q hash\n\tWanted %x\n\tGot %x\n", h.Name, h.Good, h.Hash.Sum(nil))
+		}
+	}
+	return f.Name()
+}
+
+func run(exe string, arg ...string) error {
+	cmd := exec.Command(exe, arg...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
--- a/src/jehanne/cmd/ksyscalls/ksyscalls.go
+++ b/src/jehanne/cmd/ksyscalls/ksyscalls.go
@ -0,0 +1,374 @@
+/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne 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, version 3 of the License.
+ *
+ * Jehanne 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 Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"text/template"
+)
+
+type SyscallConf struct {
+	Ret     []string
+	Args    []string
+	Name    string
+	Id      uint32
+}
+
+type Sysconf struct {
+	Syscalls  []SyscallConf
+}
+
+func usage(msg string) {
+	fmt.Fprint(os.Stderr, msg)
+	fmt.Fprint(os.Stderr, "Usage: ksyscalls path/to/sysconf.json\n")
+	flag.PrintDefaults()
+	os.Exit(1)
+}
+
+type SyscallWrapper struct {
+	Id			uint32
+	Name    	string
+	Vars		[]string
+	CommonCode	string
+	ExecCode	string
+	EntryPrint	string
+	ExitPrint	string
+	SysRetField	string
+	DefaultRet	string
+}
+
+type KernelCode struct {
+	Externs			[]string
+	Wrappers		[]SyscallWrapper
+}
+
+func uregArg(index int) string{
+	switch(index){
+		case 0:
+			return "di";
+		case 1:
+			return "si";
+		case 2:
+			return "dx";
+		case 3:
+			return "r10";
+		case 4:
+			return "r8";
+		case 5:
+			return "r9";
+	}
+	return ""
+}
+
+func sysret(t string) string {
+	switch(t){
+	case "int", "int32_t":
+		return "i"
+	case "long", "int64_t":
+		return "vl"
+	case "uintptr_t", "void":
+		return "p"
+	case "void*", "char*", "char**", "uint8_t*", "int32_t*", "uint64_t*", "int64_t*":
+		return "v"
+	}
+	return " [?? " + t + "]"
+}
+
+func formatArg(i int, t string) string{
+	switch(t){
+	case "int", "int32_t":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%d\", a%d);\n", i)
+	case "unsigned int", "uint32_t":
+		/* unsigned int is reserved for flags */
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#ux\", a%d);\n", i)
+	case "long", "int64_t":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%lld\", a%d);\n", i)
+	case "unsigned long", "uint64_t":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#lud\", a%d);\n", i)
+	case "void*", "uint8_t*", "const void*", "const uint8_t*":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#p\", a%d);\n", i)
+	case "int32_t*", "int*", "const int32_t*", "const int*":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#p(%%d)\", a%d, a%d);\n", i, i)
+	case "const char*", "char*":
+		return fmt.Sprintf("\tfmtuserstring(fmt, a%d);\n", i)
+	case "const char**", "char**":
+		return fmt.Sprintf("\tfmtuserstringlist(fmt, a%d);\n", i);
+	}
+	return " [?? " + t + "]"
+}
+
+func formatRet(t string) string{
+	switch(t){
+	case "int", "int32_t":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%d\", ret->%s);\n", sysret(t))
+	case "unsigned int", "uint32_t":
+		/* unsigned int is reserved for flags */
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#ux\", ret->%s);\n", sysret(t))
+	case "long", "int64_t":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%lld\", ret->%s);\n", sysret(t))
+	case "unsigned long", "uint64_t", "void":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#llud\", ret->%s);\n", sysret(t))
+	case "void*", "uintptr_t", "const void*", "const uintptr_t":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#p\", ret->%s);\n", sysret(t))
+	case "int32_t*", "int*",  "const int32_t*", "const int*":
+		return fmt.Sprintf("\tfmtprint(fmt, \" %%#p(%%d)\", ret->%s, *ret->%s);\n", sysret(t), sysret(t))
+	}
+	return " [?? " + t + "]"
+}
+
+func generateKernelCode(calls []SyscallConf){
+	code := new(KernelCode)
+	
+	for _, call := range(calls) {
+		/* extern definitions */
+		ext := "extern " + call.Ret[0] + " sys" + call.Name + "("
+		if len(call.Args) == 0 {
+			ext += "void";
+		} else {
+			for i, a := range(call.Args){
+				if i > 0 {
+					ext += ", "
+				}
+				ext += fmt.Sprintf("%s", a)
+			}
+		}
+		ext += ");\n"
+
+		wcall := new(SyscallWrapper)
+		wcall.Id = call.Id
+		wcall.Name = call.Name
+		wcall.SysRetField = sysret(call.Ret[0])
+		wcall.DefaultRet = fmt.Sprintf("ret.%s = (%s)-1;", wcall.SysRetField, call.Ret[0])
+
+		for i, a := range(call.Args){
+			wcall.Vars = append(wcall.Vars, fmt.Sprintf("%s a%v;",  a, i))
+			wcall.CommonCode += fmt.Sprintf("\ta%v = (%s)ureg->%s;\n", i,  a, uregArg(i))
+		}
+		wcall.ExecCode += "\tret->" + wcall.SysRetField + " = sys" + call.Name + "("
+		for i, _ := range(call.Args){
+			if i > 0 {
+				wcall.ExecCode += ", "
+			}
+			wcall.ExecCode += fmt.Sprintf("a%v", i)
+		}
+		wcall.ExecCode += ");"
+		
+		if call.Name == "pwrite"{
+			wcall.EntryPrint += formatArg(0, call.Args[0])
+			wcall.EntryPrint += "\tfmtrwdata(fmt, (char*)a1, MIN(a2, 64));\n"
+			wcall.EntryPrint += formatArg(2, call.Args[2])
+			wcall.EntryPrint += formatArg(3, call.Args[3])
+		} else {
+			for i, a := range(call.Args){
+				wcall.EntryPrint += formatArg(i, a)
+			}
+		}
+
+		wcall.ExitPrint += formatRet(call.Ret[0])
+		if call.Name == "pread"{
+			wcall.ExitPrint += fmt.Sprintf("\tfmtrwdata(fmt, (char*)ureg->%s, MIN(ureg->%s, 64));\n", uregArg(1), uregArg(2))
+		}
+
+		code.Wrappers = append(code.Wrappers, *wcall)
+		code.Externs = append(code.Externs, ext)
+	}
+	
+	tmpl, err := template.New("systab.c").Parse(`/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne 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, version 3 of the License.
+ *
+ * Jehanne 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 Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/* automatically generated by ksyscalls */
+#include "u.h"
+#include "../port/lib.h"
+#include "mem.h"
+#include "dat.h"
+#include "fns.h"
+#include "../port/error.h"
+#include "ureg.h"
+
+extern void fmtrwdata(Fmt* f, char* a, int n);
+extern void fmtuserstring(Fmt* f, const char* a);
+extern void fmtuserstringlist(Fmt* f, const char** argv);
+
+{{ range .Externs }}{{.}}{{ end }}
+{{ range .Wrappers }}
+static void
+wrap_{{ .Name }}(ScRet* ret, Ureg* ureg)
+{
+	{{ range .Vars }}{{.}}
+	{{ end }}
+{{ .CommonCode }}
+{{ .ExecCode }}
+}
+{{ end }}
+int nsyscall = {{len .Wrappers}};
+
+ScRet
+default_syscall_ret(int syscall)
+{
+	static ScRet zero;
+	ScRet ret = zero;
+	switch(syscall){
+	{{ range .Wrappers }}case {{ .Id }}:
+		{{ .DefaultRet }}
+		break;
+	{{ end }}
+	default:
+		ret.vl = -1;
+		break;
+	}
+	return ret;
+}
+
+char*
+syscall_name(int syscall)
+{
+	switch(syscall){
+	{{ range .Wrappers }}case {{ .Id }}:
+		return "{{ .Name }}";
+	{{ end }}
+	default:
+		return nil;
+	}
+}
+
+void
+dispatch_syscall(int syscall, Ureg* ureg, ScRet* ret)
+{
+	switch(syscall){
+	{{ range .Wrappers }}case {{ .Id }}:
+		wrap_{{ .Name }}(ret, ureg);
+		break;
+	{{ end }}
+	default:
+		panic("dispatch_syscall: bad sys call number %d pc %#p\n", syscall, ureg->ip);
+	}
+}
+
+{{ range .Wrappers }}
+static void
+enter_{{ .Name }}(Fmt* fmt, Ureg* ureg)
+{
+	{{ range .Vars }}{{.}}
+	{{ end }}
+{{ .CommonCode }}
+	fmtprint(fmt, "{{ .Name }} %#p > ", ureg->ip);
+{{ .EntryPrint }}
+}
+{{ end }}
+
+char*
+syscallfmt(int syscall, Ureg* ureg)
+{
+	Fmt fmt;
+	fmtstrinit(&fmt);
+	fmtprint(&fmt, "%d %s ", up->pid, up->text);
+
+	switch(syscall){
+	{{ range .Wrappers }}case {{ .Id }}:
+		enter_{{ .Name }}(&fmt, ureg);
+		break;
+	{{ end }}
+	default:
+		panic("syscallfmt: bad sys call number %d pc %#p\n", syscall, ureg->ip);
+	}
+
+	return fmtstrflush(&fmt);
+}
+
+{{ range .Wrappers }}
+static void
+exit_{{ .Name }}(Fmt* fmt, Ureg* ureg, ScRet* ret)
+{
+	fmtprint(fmt, "{{ .Name }} %#p < ", ureg->ip);
+{{ .ExitPrint }}
+}
+{{ end }}
+
+char*
+sysretfmt(int syscall, Ureg* ureg, ScRet* ret, uint64_t start, uint64_t stop)
+{
+	Fmt fmt;
+	fmtstrinit(&fmt);
+	fmtprint(&fmt, "%d %s ", up->pid, up->text);
+
+	switch(syscall){
+	{{ range .Wrappers }}case {{ .Id }}:
+		exit_{{ .Name }}(&fmt, ureg, ret);
+		break;
+	{{ end }}
+	default:
+		panic("sysretfmt: bad sys call number %d pc %#p\n", syscall, ureg->ip);
+	}
+
+	if(0 > ret->vl){
+		fmtprint(&fmt, " %s %#llud %#llud\n", up->syserrstr, start, stop-start);
+	} else {
+		fmtprint(&fmt, " \"\" %#llud %#llud\n", start, stop-start);
+	}
+
+	return fmtstrflush(&fmt);
+}
+
+`)
+	err = tmpl.Execute(os.Stdout, code)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func main() {
+
+	flag.Parse()
+
+	if flag.NArg() != 1 {
+		usage("no path to sysconf.json")
+	}
+	
+	buf, err := ioutil.ReadFile(flag.Arg(0))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var sysconf Sysconf
+	err = json.Unmarshal(buf, &sysconf)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	generateKernelCode(sysconf.Syscalls)
+
+}
--- a/src/jehanne/cmd/mksys/mksys.go
+++ b/src/jehanne/cmd/mksys/mksys.go
@ -258,9 +258,9 @@ const(
 #include "mem.h"
 #include "dat.h"
 #include "fns.h"
-#include "../../libc/9syscall/sys.h"
+#include <9syscall/sys.h>

-{{ range . }}extern void {{ .Sysname }}(Ar0*, ...);
+{{ range . }}extern void {{ .Sysname }}(ScRet*, ScArg, ScArg, ScArg, ScArg, ScArg, ScArg);
 {{ end }}
 Systab systab[] = {
 {{ range . }}[{{ .Define }}] { "{{ .Name }}", {{ .Sysname }}, {{ .Fudge }} },
--- a/src/jehanne/cmd/usyscalls/usyscalls.go
+++ b/src/jehanne/cmd/usyscalls/usyscalls.go
@ -0,0 +1,291 @@
+/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne 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, version 3 of the License.
+ *
+ * Jehanne 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 Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+	"text/template"
+)
+
+const gplHeader string = `/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne 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, version 3 of the License.
+ *
+ * Jehanne 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 Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/* automatically generated by usyscalls */
+`
+
+type SyscallConf struct {
+	Ret     []string
+	Args    []string
+	Name    string
+	Id      uint32
+}
+
+type Sysconf struct {
+	Syscalls  []SyscallConf
+}
+
+type SyscallWrapper struct {
+	Id			uint32
+	Name    	string
+	FuncArgs	string
+	MacroArgs	string
+	VarValues	[]string
+	Vars		[]string
+	AsmArgs		string
+	AsmClobbers	string
+	RetType		string
+}
+
+type HeaderCode struct {
+	Wrappers		[]SyscallWrapper
+}
+
+
+func usage(msg string) {
+	fmt.Fprint(os.Stderr, msg)
+	fmt.Fprint(os.Stderr, "Usage: usyscalls header|code path/to/sysconf.json\n")
+	flag.PrintDefaults()
+	os.Exit(1)
+}
+
+func argTypeName(t string) string{
+	switch(t){
+	case "int", "int32_t":
+		return "i"
+	case "unsigned int", "uint32_t":
+		/* unsigned int is reserved for flags */
+		return "ui"
+	case "long", "int64_t":
+		return "l"
+	case "unsigned long", "uint64_t":
+		return "ul"
+	case "void*", "uint8_t*", "const void*", "const uint8_t*":
+		return "p"
+	case "int32_t*", "int*", "const int32_t*", "const int*":
+		return "p"
+	case "const char*", "char*":
+		return "p"
+	case "const char**", "char**":
+		return "p"
+	}
+	return " [?? " + t + "]"
+
+}
+
+func argRegister(index int, t string) string{
+	prefix := ""
+	switch(t){
+		case "int", "unsigned int", "uint32_t", "int32_t":
+			prefix = "e"
+		default:
+			prefix = "r"
+	}
+	switch(index){
+		case 0:
+			return prefix + "di";
+		case 1:
+			return prefix + "si";
+		case 2:
+			return prefix + "dx";
+		case 3:
+			return "r10";
+		case 4:
+			return "r8";
+		case 5:
+			return "r9";
+	}
+	return ""
+}
+
+func getHeaderData(calls []SyscallConf) *HeaderCode {
+	code := new(HeaderCode)
+	for _, call := range(calls) {
+		wcall := new(SyscallWrapper)
+		wcall.Id = call.Id
+		wcall.Name = call.Name
+		wcall.RetType = call.Ret[0]
+
+		clobberMemory := false
+		wcall.AsmClobbers = "\"cc\", \"rcx\", \"r11\""
+		wcall.AsmArgs = fmt.Sprintf("\"0\"(%d)", wcall.Id)
+		for i, a := range(call.Args){
+			if i > 0 {
+				wcall.FuncArgs += ", "
+				wcall.MacroArgs += ", "
+			}
+			if strings.HasSuffix(a, "*") && !strings.HasPrefix(a, "const"){
+				clobberMemory = true
+			}
+			wcall.FuncArgs += fmt.Sprintf("%s a%d", a, i) 
+			wcall.MacroArgs += fmt.Sprintf("/* %s */ a%d", a, i)
+			wcall.VarValues = append(wcall.VarValues, fmt.Sprintf("_sysargs[%d].%s = (a%d); \\\n\t", i, argTypeName(a), i))
+			wcall.Vars = append(wcall.Vars, fmt.Sprintf("register %s __r%d asm(\"%s\") = _sysargs[%d].%s; \\\n\t", a, i, argRegister(i, a), i, argTypeName(a)))
+			wcall.AsmArgs += fmt.Sprintf(", \"r\"(__r%d)", i)
+		}
+		if clobberMemory {
+			wcall.AsmClobbers += ", \"memory\""
+		}
+		code.Wrappers = append(code.Wrappers, *wcall)
+	}
+
+	return code	
+}
+
+func generateSyscallTable(calls []SyscallConf){
+	code := getHeaderData(calls)
+	tmpl, err := template.New("tab.c").Parse(`
+{{ range .Wrappers }}"{{ .Name }}", (int(*)()) {{ .Name }},
+{{ end }}
+`)
+	err = tmpl.Execute(os.Stdout, code)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func generateLibcCode(calls []SyscallConf){
+	code := getHeaderData(calls)
+	tmpl, err := template.New("syscalls.c").Parse(gplHeader + `
+#define PORTABLE_SYSCALLS
+#include <u.h>
+
+{{ range .Wrappers }}
+{{ .RetType }}
+{{ .Name }}({{ .FuncArgs }})
+{
+	register {{ .RetType }} __ret asm ("rax");
+	__asm__ __volatile__ (
+		"movq %%rcx, %%r10" "\n\t"
+		"movq ${{ .Id }}, %%rax" "\n\t"
+		"syscall"
+		: "=r" (__ret)
+		: /* args are ready */
+		: {{ .AsmClobbers }}
+	);
+	return __ret;
+}
+{{ end }}
+`)
+	err = tmpl.Execute(os.Stdout, code)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func generateSyscallHeader(calls []SyscallConf){
+	funcMap := template.FuncMap{
+        "title": strings.Title,
+    }
+	code := getHeaderData(calls)
+	tmpl, err := template.New("syscall.h").Funcs(funcMap).Parse(gplHeader + `
+typedef enum Syscalls
+{
+{{ range .Wrappers }}	Sys{{ .Name|title }} = {{ .Id }},
+{{ end }}} Syscalls;
+
+#ifndef KERNEL
+{{ range .Wrappers }}
+#define sys_{{ .Name }}({{ .MacroArgs }}) ({ \
+	{{ range .VarValues }}{{.}}{{end}}{{ range .Vars }}{{.}}{{end}}register {{ .RetType }} __ret asm ("rax"); \
+	__asm__ __volatile__ ( \
+		"syscall" \
+		: "=&r" (__ret) \
+		: {{ .AsmArgs }} \
+		: {{ .AsmClobbers }} \
+	); \
+	__ret; })
+{{ end }}
+
+#ifdef PORTABLE_SYSCALLS
+
+{{ range .Wrappers }}extern {{ .RetType }} {{ .Name }}({{ .FuncArgs }});
+{{ end }}
+extern int32_t read(int, void*, int32_t);
+extern int32_t write(int, const void*, int32_t);
+
+#else
+
+{{ range .Wrappers }}# define {{ .Name }}(...) sys_{{ .Name }}(__VA_ARGS__)
+{{ end }}
+#define read(fd, buf, size) pread(fd, buf, size, -1)
+#define write(fd, buf, size) pwrite(fd, buf, size, -1)
+
+#endif
+
+#endif
+`)
+	err = tmpl.Execute(os.Stdout, code)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func main() {
+
+	flag.Parse()
+
+	if flag.NArg() != 2 {
+		usage("no path to sysconf.json")
+	}
+	
+	buf, err := ioutil.ReadFile(flag.Arg(1))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var sysconf Sysconf
+	err = json.Unmarshal(buf, &sysconf)
+	if err != nil {
+		log.Fatal(err)
+	}
+	mode := flag.Arg(0)
+	switch(mode){
+		case "header":
+			generateSyscallHeader(sysconf.Syscalls)
+			break
+		case "code":
+			generateLibcCode(sysconf.Syscalls)
+			break
+		case "tab":
+			generateSyscallTable(sysconf.Syscalls)
+			break
+	}
+	
+	
+
+}