Ronald G. Minnich (rminnich@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1915
-gerrit
commit 79c49390ebd42956b5cb20b2a85d6133a9968a7e Author: Ronald G. Minnich rminnich@gmail.com Date: Mon Nov 26 14:33:09 2012 -0800
Make xcompile support multiple architectures
With this change the the xcompile script now creates environment variables for more than one architecture.
Signed-off-by: David Hendricks dhendrix@chromium.org Signed-off-by: Hung-Te Lin hungte@chromium.org Signed-off-by: Stefan Reinauer stepan@coresystems.de
Change-Id: I349a1fd1d865ef16979f1dfd6aeca12b1ee2eed6 Signed-off-by: Ronald G. Minnich rminnich@gmail.com --- util/xcompile/xcompile | 257 ++++++++++++++++++++++++++++++++++--------------- 1 file changed, 178 insertions(+), 79 deletions(-)
diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile index 3930460..084587e 100644 --- a/util/xcompile/xcompile +++ b/util/xcompile/xcompile @@ -3,6 +3,7 @@ # This file is part of the coreboot project. # # Copyright (C) 2007-2010 coresystems GmbH +# Copyright (C) 2012 Google Inc # # 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 @@ -18,104 +19,202 @@ # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #
-testcc() -{ - echo "_start(void) {}" > .$$$$.c - $1 -nostdlib -Werror $2 .$$$$.c -o .$$$$.tmp 2>/dev/null >/dev/null - ret=$? - rm -f .$$$$.c .$$$$.tmp - return $ret +TMPFILE="" + +die() { + echo "ERROR: $*" >&2 + exit 1 }
-for make in make gmake gnumake; do - if [ "`$make --version 2>/dev/null | grep -c GNU`" -gt 0 ]; then - MAKE=$make - break +clean_up() { + if [ -n "$TMPFILE" ]; then + rm -f "$TMPFILE" "$TMPFILE.c" "$TMPFILE.o" fi -done +}
-GCCPREFIX=invalid -XGCCPATH=${1:-"`pwd`/util/crossgcc/xgcc/bin/"} -echo '# XGCCPATH='${XGCCPATH} -TMPFILE=`mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz` -touch $TMPFILE - -# This loops over all supported architectures in TARCH -TARCH=('i386' 'x86_64') -TWIDTH=32 -for search_for in "${TARCH[@]}"; do - TARCH_SEARCH=("${TARCH_SEARCH[@]}" ${XGCCPATH}${search_for}-elf- ${search_for}-elf-) -done -echo '# TARCH_SEARCH='${TARCH_SEARCH[@]} +program_exists() { + type "$1" >/dev/null 2>&1 +}
-for gccprefixes in "${TARCH_SEARCH[@]}" ""; do - if ! which ${gccprefixes}as 2>/dev/null >/dev/null; then - continue - fi - rm -f ${TMPFILE}.o - if ${gccprefixes}as -o ${TMPFILE}.o ${TMPFILE}; then - TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o` - if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then - GCCPREFIX=$gccprefixes - ASFLAGS= - CFLAGS= - LDFLAGS= - break - fi - fi - if ${gccprefixes}as --32 -o ${TMPFILE}.o ${TMPFILE}; then - TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o` - if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then - GCCPREFIX=$gccprefixes - ASFLAGS=--32 - CFLAGS="-m32 -Wl,-b,elf32-i386 -Wl,-melf_i386 " - LDFLAGS="-b elf32-i386 -melf_i386" - break +find_gnu_make() { + for make in make gmake gnumake; do + if [ "$($make --version 2>/dev/null | grep -c GNU)" -gt 0 ] + then + echo "$make" + return fi + done +} + +testcc() { + local tmp_c="$TMPFILE.c" + local tmp_o="$TMPFILE.o" + rm -f "$tmp_c" "$tmp_o" + echo "_start(void) {}" >"$tmp_c" + "$1" -nostdlib -Werror $2 "$tmp_c" -o "$tmp_o" >/dev/null 2>&1 +} + +testas() { + local gccprefixes="$1" + local twidth="$2" + local arch="$3" + local use_dash_twidth="$4" + local obj_file="$TMPFILE.o" + local full_arch="elf$twidth-$arch" + + rm -f "$obj_file" + [ -n "$use_dash_twidth" ] && use_dash_twidth="--$twidth" + ${gccprefixes}as $use_dash_twidth -o "$obj_file" $TMPFILE 2>/dev/null || + return 1 + + # Check output content type. + local obj_type="$(${gccprefixes}objdump -p $obj_file)" + local obj_arch="$(expr "$obj_type" : '.*format (.[a-z0-9-]*)')" + [ "$obj_arch" = "$full_arch" ] || return 1 + + # Architecture matched. + GCCPREFIX="$gccprefixes" + + if [ -z "$use_dash_twidth" ]; then + ASFLAGS="" + CFLAGS="" + LDFLAGS="" + else + ASFLAGS="--$twidth" + CFLAGS="-m$twidth" + LDFLAGS="-b $full_arch" + fi -done -rm -f $TMPFILE ${TMPFILE}.o
-if [ "$GCCPREFIX" = "invalid" ]; then - echo '$(error no suitable gcc found)' - exit 1 -fi + # Special parameters only available in dash_twidth mode. + [ -n "$use_dash_twidth" ] && case "$full_arch" in + "elf32-i386" ) + LDFLAGS="$LDFLAGS -melf_i386" + CFLAGS="$CFLAGS -Wl,-b,elf32-i386 -Wl,-melf_i386" + ;; + esac
-CC="${GCCPREFIX}gcc" -testcc "$CC" "$CFLAGS-Wa,--divide " && CFLAGS="$CFLAGS-Wa,--divide " -testcc "$CC" "$CFLAGS-fno-stack-protector " && CFLAGS="$CFLAGS-fno-stack-protector " -testcc "$CC" "$CFLAGS-Wl,--build-id=none " && CFLAGS="$CFLAGS-Wl,--build-id=none " -# GCC 4.6 is much more picky about unused variables. Turn off it's warnings for -# now: -testcc "$CC" "$CFLAGS-Wno-unused-but-set-variable " && \ - CFLAGS="$CFLAGS-Wno-unused-but-set-variable " + return 0 +}
-if which gcc 2>/dev/null >/dev/null; then - HOSTCC=gcc -else - HOSTCC=cc -fi +detect_special_flags() { + local architecture="$1" + # GCC 4.6 is much more picky about unused variables. + # Turn off it's warnings for now: + testcc "$CC" "$CFLAGS -Wno-unused-but-set-variable " && + CFLAGS="$CFLAGS -Wno-unused-but-set-variable " + + # Use bfd linker instead of gold if available: + testcc "$CC" "$CFLAGS -fuse-ld=bfd" && + CFLAGS="$CFLAGS -fuse-ld=bfd" && LINKER_SUFFIX='.bfd' + + testcc "$CC" "$CFLAGS -Wa,--divide" && + CFLAGS="$CFLAGS -Wa,--divide" + testcc "$CC" "$CFLAGS -fno-stack-protector"&& + CFLAGS="$CFLAGS -fno-stack-protector" + testcc "$CC" "$CFLAGS -Wl,--build-id=none" && + CFLAGS="$CFLAGS -Wl,--build-id=none" + + case "$architecture" in + arm ) + # testcc "$CC" "$CFLAGS -mcpu=cortex-a9" && + # CFLAGS="$CFLAGS -mcpu=cortex-a9" + testcc "$CC" "\ +$CFLAGS -ffixed-r8 -msoft-float -marm -mabi=aapcs-linux \ +-mno-thumb-interwork -march=armv7 -mno-thumb-interwork" && CFLAGS="\ +$CFLAGS -ffixed-r8 -msoft-float -marm -mabi=aapcs-linux \ +-mno-thumb-interwork -march=armv7 -mno-thumb-interwork" + ;; + esac +} + +report_arch_toolchain() { + cat <<EOF +# elf${TWIDTH}-${TARCH} toolchain (${GCCPREFIX}gcc) +CC_${TARCH}:=${GCCPREFIX}gcc ${CFLAGS} +AS_${TARCH}:=${GCCPREFIX}as ${ASFLAGS} +LD_${TARCH}:=${GCCPREFIX}ld ${LDFLAGS} +NM_${TARCH}:=${GCCPREFIX}nm +OBJCOPY_${TARCH}:=${GCCPREFIX}objcopy +OBJDUMP_${TARCH}:=${GCCPREFIX}objdump +READELF_${TARCH}:=${GCCPREFIX}readelf +STRIP_${TARCH}:=${GCCPREFIX}strip +AR_${TARCH}:=${GCCPREFIX}ar + +EOF +} + +# Create temporary file(s). +TMPFILE="$(mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz)" +touch "$TMPFILE" +trap clean_up EXIT + +# Architecture definition +SUPPORTED_ARCHITECTURE="x86 arm" + +# ARM Architecture +TARCH_arm="littlearm" +TCLIST_arm="littlearm" +TWIDTH_arm="32" + +# X86 Architecture +TARCH_x86="i386" +TCLIST_x86="i386 x86_64" +TWIDTH_x86="32"
-if [ "`${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI`" -gt 0 ]; then +# This loops over all supported architectures. +for architecture in $SUPPORTED_ARCHITECTURE; do + GCCPREFIX="invalid" + TARCH="$(eval echo $TARCH_$architecture)" + TCLIST="$(eval echo $TCLIST_$architecture)" + TWIDTH="$(eval echo $TWIDTH_$architecture)" + [ -z "$TARCH" -o -z "$TCLIST" -o -z "$TWIDTH" ] && + die "Missing architecture definition for $architecture." + + # To override toolchain, define CROSS_COMPILE_$arch or CROSS_COMPILE as + # environment variable. + # Ex: CROSS_COMPILE_arm="armv7a-cros-linux-gnueabi-" + # CROSS_COMPILE_x86="i686-pc-linux-gnu-" + search="$(eval echo $CROSS_COMPILE_$architecture 2>/dev/null)" + search="$search $CROSS_COMPILE" + for toolchain in $TCLIST; do + search="$search $XGCCPATH$toolchain-elf-" + search="$search $toolchain-elf-" + done + echo "# $architecture TARCH_SEARCH=$search" + + # Search toolchain by checking assembler capability. + for gccprefixes in $search ""; do + program_exists "${gccprefixes}as" || continue + testas "$gccprefixes" "$TWIDTH" "$TARCH" "" && break + testas "$gccprefixes" "$TWIDTH" "$TARCH" "TRUE" && break + done + + if [ "$GCCPREFIX" = "invalid" ]; then + echo "Warning: no suitable GCC for $architecture." >&2 + continue + fi + CC="${GCCPREFIX}"gcc + + detect_special_flags "$architecture" + report_arch_toolchain +done + +if [ "$(${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI)" -gt 0 ]; then IASL=${XGCCPATH}iasl else IASL=iasl fi
-cat << EOF -# elf${TWIDTH}-${TARCH} toolchain -AS:=${GCCPREFIX}as ${ASFLAGS} -CC:=${GCCPREFIX}gcc ${CFLAGS} -AR:=${GCCPREFIX}ar -LD:=${GCCPREFIX}ld ${LDFLAGS} -STRIP:=${GCCPREFIX}strip -NM:=${GCCPREFIX}nm -OBJCOPY:=${GCCPREFIX}objcopy -OBJDUMP:=${GCCPREFIX}objdump +if program_exists gcc; then + HOSTCC=gcc +else + HOSTCC=cc +fi
+cat <<EOF IASL:=${IASL}
# native toolchain HOSTCC:=${HOSTCC} EOF -