coreboot-kgpe-d16/util/xcompile/xcompile
Vadim Bendebury a6b220d8f8 Allow for different BFD elf formats per architecture
The upcoming MIPS toolchain inside chroot generates elf images of
elf32-tradlittlemips format, whereas readily available tools outside
of chroot generate images of elf32-littlemips format. Both of these
formats are perfectly fine, but xcompile accepts only one format per
CPU architecture.

This patch allows to specify multiple formats per architecture, any
matching format will suffice.

BUG=chrome-os-partner:31438
TEST=emerged arm, x86 and mips targets inside chroot

Change-Id: I2c6b8e46b9299059b8e099b93c8c3dcf0a569899
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 7f2f1d51643f33b72ac5e4091669f38662e5b9ce
Original-Change-Id: I22405e71ac72b985fad51e2f5d7cc014107b8a9e
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/214599
Original-Reviewed-by: Stefan Reinauer <reinauer@google.com>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8823
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-03-21 16:57:27 +01:00

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#!/bin/bash
#
# 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
# the Free Software Foundation; version 2 of the License.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
TMPFILE=""
XGCCPATH=${1:-"`pwd`/util/crossgcc/xgcc/bin/"}
die() {
echo "ERROR: $*" >&2
exit 1
}
clean_up() {
if [ -n "$TMPFILE" ]; then
rm -f "$TMPFILE" "$TMPFILE.c" "$TMPFILE.o"
fi
}
# Create temporary file(s).
TMPFILE="$(mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz)"
touch "$TMPFILE"
trap clean_up EXIT
program_exists() {
type "$1" >/dev/null 2>&1
}
if [ "$(${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI)" -gt 0 ]; then
IASL=${XGCCPATH}iasl
elif [ "$(iasl 2>/dev/null | grep -c ACPI)" -gt 0 ]; then
IASL=iasl
else
die "no iasl found"
fi
if program_exists gcc; then
HOSTCC=gcc
elif program_exists cc; then
HOSTCC=cc
else
die "no host compiler found"
fi
cat <<EOF
# platform agnostic and host tools
IASL:=${IASL}
HOSTCC:=${HOSTCC}
EOF
testcc() {
local tmp_c="$TMPFILE.c"
local tmp_o="$TMPFILE.o"
rm -f "$tmp_c" "$tmp_o"
echo "void _start(void) {}" >"$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 $full_arch"
fi
# Special parameters only available in dash_twidth mode.
[ -n "$use_dash_twidth" ] && case "$full_arch" in
"elf32-i386" )
LDFLAGS="$LDFLAGS -melf_i386"
CFLAGS="$CFLAGS -Wl,-b,elf32-i386 -Wl,-melf_i386"
;;
esac
return 0
}
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" "$CFLAGS -fno-stack-protector"&&
CFLAGS="$CFLAGS -fno-stack-protector"
testcc "$CC" "$CFLAGS -Wl,--build-id=none" &&
CFLAGS="$CFLAGS -Wl,--build-id=none"
case "$architecture" in
x86)
testcc "$CC" "$CFLAGS -Wa,--divide" &&
CFLAGS="$CFLAGS -Wa,--divide"
# Always build for i686 -- no sse/mmx instructions since SMM
# modules are compiled using these flags. Note that this
# doesn't prevent a project using xcompile to explicitly
# specify -mmsse, etc flags.
CFLAGS="$CFLAGS -march=i686"
;;
esac
}
report_arch_toolchain() {
cat <<EOF
# elf${TWIDTH}-${TBFDARCH} toolchain (${GCCPREFIX}gcc)
ARCH_SUPPORTED+=${TARCH}
SUBARCH_SUPPORTED+=${TSUPP-${TARCH}}
CC_${TARCH}:=${GCCPREFIX}gcc
CFLAGS_${TARCH}:=${CFLAGS}
CPP_${TARCH}:=${GCCPREFIX}cpp
AS_${TARCH}:=${GCCPREFIX}as ${ASFLAGS}
LD_${TARCH}:=${GCCPREFIX}ld${LINKER_SUFFIX} ${LDFLAGS}
NM_${TARCH}:=${GCCPREFIX}nm
OBJCOPY_${TARCH}:=${GCCPREFIX}objcopy
OBJDUMP_${TARCH}:=${GCCPREFIX}objdump
READELF_${TARCH}:=${GCCPREFIX}readelf
STRIP_${TARCH}:=${GCCPREFIX}strip
AR_${TARCH}:=${GCCPREFIX}ar
EOF
}
# Architecture definition
SUPPORTED_ARCHITECTURE="x86 arm arm64 riscv mipsel"
arch_config_arm() {
TARCH="arm"
TBFDARCHS="littlearm"
TCLIST="armv7a armv7-a"
TWIDTH="32"
TSUPP="arm armv4 armv7"
TABI="eabi"
}
arch_config_arm64() {
TARCH="arm64"
TBFDARCHS="littleaarch64"
TCLIST="aarch64"
TWIDTH="64"
TSUPP="arm64 armv8_64"
TABI="elf"
}
arch_config_riscv() {
TARCH="riscv"
TBFDARCHS="littleriscv"
TCLIST="riscv"
TWIDTH="64"
TABI="elf"
}
arch_config_x86() {
TARCH="x86_32"
TBFDARCHS="i386"
TCLIST="i386 x86_64"
TWIDTH="32"
TABI="elf"
}
arch_config_mipsel() {
TARCH="mipsel"
TBFDARCHS="tradlittlemips littlemips"
TCLIST="mipsel"
TWIDTH="32"
TABI="elf"
}
test_architecture() {
architecture=$1
GCCPREFIX="invalid"
unset TARCH TBFDARCH TCLIST TWIDTH TSUPP TABI
if type arch_config_$architecture > /dev/null; then
arch_config_$architecture
else
die "no architecture definition for $architecture"
fi
# To override toolchain, define CROSS_COMPILE_$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-$TABI-"
search="$search $toolchain-$TABI-"
search="$search $toolchain-linux-gnu-"
search="$search $toolchain-"
done
echo "# $architecture TARCH_SEARCH=$search"
# Search toolchain by checking assembler capability.
for TBFDARCH in $TBFDARCHS; do
for gccprefixes in $search ""; do
program_exists "${gccprefixes}as" || continue
testas "$gccprefixes" "$TWIDTH" "$TBFDARCH" "" && break
testas "$gccprefixes" "$TWIDTH" "$TBFDARCH" "TRUE" && break
done
[ "$GCCPREFIX" = "invalid" ] || break
done
if [ "$GCCPREFIX" = "invalid" ]; then
echo "Warning: no suitable GCC for $architecture." >&2
continue
fi
CC="${GCCPREFIX}"gcc
detect_special_flags "$architecture"
report_arch_toolchain
}
# This loops over all supported architectures.
for architecture in $SUPPORTED_ARCHITECTURE; do
test_architecture $architecture
done