358 lines
8.9 KiB
Bash
Executable File
358 lines
8.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# This file is part of the coreboot project.
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#
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# Copyright (C) 2007-2010 coresystems GmbH
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# Copyright (C) 2012 Google Inc
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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TMPFILE=""
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XGCCPATH=$1
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# libpayload crossgcc path
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if [ -d "`pwd`/../../util/crossgcc/xgcc/bin/" ]
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then
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XGCCPATH=${XGCCPATH:-"`pwd`/../../util/crossgcc/xgcc/bin/"}
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fi
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# coreboot crossgcc path
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if [ -d "`pwd`/util/crossgcc/xgcc/bin/" ]
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then
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XGCCPATH=${XGCCPATH:-"`pwd`/util/crossgcc/xgcc/bin/"}
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fi
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die() {
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echo "ERROR: $*" >&2
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exit 1
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}
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clean_up() {
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if [ -n "$TMPFILE" ]; then
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rm -f "$TMPFILE" "$TMPFILE.c" "$TMPFILE.o"
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fi
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}
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# Create temporary file(s).
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TMPFILE="$(mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz)"
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touch "$TMPFILE"
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trap clean_up EXIT
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program_exists() {
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type "$1" >/dev/null 2>&1
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}
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if [ "$(${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI)" -gt 0 ]; then
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IASL=${XGCCPATH}iasl
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elif [ "$(iasl 2>/dev/null | grep -c ACPI)" -gt 0 ]; then
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IASL=iasl
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else
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die "no iasl found"
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fi
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if program_exists gcc; then
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HOSTCC=gcc
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elif program_exists cc; then
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HOSTCC=cc
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else
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die "no host compiler found"
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fi
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cat <<EOF
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# platform agnostic and host tools
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IASL:=${IASL}
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HOSTCC?=${HOSTCC}
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EOF
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testcc() {
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local tmp_c="$TMPFILE.c"
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local tmp_o="$TMPFILE.o"
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rm -f "$tmp_c" "$tmp_o"
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echo "void _start(void) {}" >"$tmp_c"
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$1 -nostdlib -Werror $2 -c "$tmp_c" -o "$tmp_o" >/dev/null 2>&1
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}
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testld() {
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local gcc="$1"
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local cflags="$2"
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local ld="$3"
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local ldflags="$4"
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local tmp_o="$TMPFILE.o"
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local tmp_elf="$TMPFILE.elf"
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rm -f "$tmp_elf"
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testcc $1 $2 &&
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$3 -nostdlib -static $4 -o "$tmp_elf" "$tmp_o" >/dev/null 2>&1
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}
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testas() {
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local gccprefix="$1"
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local twidth="$2"
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local arch="$3"
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local use_dash_twidth="$4"
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local endian="$5"
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local obj_file="$TMPFILE.o"
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local full_arch="elf$twidth-$arch"
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rm -f "$obj_file"
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[ -n "$use_dash_twidth" ] && use_dash_twidth="--$twidth"
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[ -n "$endian" ] && endian="-$endian"
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${gccprefix}as $use_dash_twidth $endian -o "$obj_file" $TMPFILE \
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2>/dev/null || return 1
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# Check output content type.
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local obj_type="$(LANG=C LC_ALL= ${gccprefix}objdump -p $obj_file)"
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local obj_arch="$(expr "$obj_type" : '.*format \(.[a-z0-9-]*\)')"
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[ "$obj_arch" = "$full_arch" ] || return 1
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# Architecture matched.
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GCCPREFIX="$gccprefix"
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unset ASFLAGS LDFLAGS
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unset CFLAGS_GCC CFLAGS_CLANG
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if [ -n "$use_dash_twidth" ]; then
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ASFLAGS="--$twidth"
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CFLAGS_GCC="-m$twidth"
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CFLAGS_CLANG="-m$twidth"
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LDFLAGS="-b $full_arch"
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fi
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# Special parameters only available in dash_twidth mode.
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[ -n "$use_dash_twidth" ] && case "$full_arch" in
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"elf32-i386" )
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LDFLAGS="$LDFLAGS -melf_i386"
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CFLAGS_GCC="$CFLAGS_GCC -Wl,-b,elf32-i386 -Wl,-melf_i386"
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CFLAGS_CLANG="$CFLAGS_GCC -Wl,-b,elf32-i386 -Wl,-melf_i386"
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;;
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esac
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return 0
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}
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detect_special_flags() {
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local architecture="$1"
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# GCC 4.6 is much more picky about unused variables.
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# Turn off it's warnings for now:
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testcc "$GCC" "$CFLAGS_GCC -Wno-unused-but-set-variable " &&
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CFLAGS_GCC="$CFLAGS_GCC -Wno-unused-but-set-variable "
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# Check for an operational -m32/-m64
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testcc "$GCC" "$CFLAGS_GCC -m$TWIDTH " &&
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CFLAGS_GCC="$CFLAGS_GCC -m$TWIDTH "
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# Use bfd linker instead of gold if available:
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testcc "$GCC" "$CFLAGS_GCC -fuse-ld=bfd" &&
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CFLAGS_GCC="$CFLAGS_GCC -fuse-ld=bfd" && LINKER_SUFFIX='.bfd'
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testcc "$GCC" "$CFLAGS_GCC -fno-stack-protector"&&
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CFLAGS_GCC="$CFLAGS_GCC -fno-stack-protector"
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testcc "$GCC" "$CFLAGS_GCC -Wl,--build-id=none" &&
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CFLAGS_GCC="$CFLAGS_GCC -Wl,--build-id=none"
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case "$architecture" in
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x86)
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# Always build for i686 -- no sse/mmx instructions since SMM
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# modules are compiled using these flags. Note that this
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# doesn't prevent a project using xcompile to explicitly
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# specify -mmsse, etc flags.
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CFLAGS_GCC="$CFLAGS_GCC -march=i686"
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;;
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x64)
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;;
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arm64)
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testld "$GCC" "$CFLAGS_GCC" "${GCCPREFIX}ld${LINKER_SUFFIX}" \
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"$LDFLAGS --fix-cortex-a53-843419" && \
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LDFLAGS_ARM64_A53_ERRATUM_843419+=" --fix-cortex-a53-843419"
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;;
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mipsel)
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testcc "$GCC" "$CFLAGS_GCC -mno-abicalls -fno-pic" && \
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CFLAGS_GCC+=" -mno-abicalls -fno-pic"
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# Enforce little endian mode.
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testcc "$GCC" "$CFLAGS_GCC -EL" && \
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CFLAGS_GCC+=" -EL"
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;;
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esac
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}
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detect_compiler_runtime() {
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test -z "$CLANG" || \
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CC_RT_CLANG="`${CLANG} ${CFLAGS_CLANG} -print-librt-file-name 2>/dev/null`"
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test -z "$GCC" || \
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CC_RT_GCC="`${GCC} ${CFLAGS_GCC} -print-libgcc-file-name`"
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}
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report_arch_toolchain() {
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cat <<EOF
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# elf${TWIDTH}-${TBFDARCH} toolchain (${GCC})
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ARCH_SUPPORTED+=${TARCH}
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SUBARCH_SUPPORTED+=${TSUPP-${TARCH}}
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ifeq (\$(CONFIG_COMPILER_GCC)\$(CONFIG_LP_COMPILER_GCC),y)
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CC_${TARCH}:=${GCC}
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CFLAGS_${TARCH}:=${CFLAGS_GCC}
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COMPILER_RT_${TARCH}:=${CC_RT_GCC}
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COMPILER_RT_FLAGS_${TARCH}:=${CC_RT_EXTRA_GCC}
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else
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CC_${TARCH}:=${CLANG}
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CFLAGS_${TARCH}:=${CFLAGS_CLANG}
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CFLAGS_${TARCH}+=-no-integrated-as -Qunused-arguments -m${TWIDTH}
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# tone down compiler warnings
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CFLAGS_${TARCH}+=-Wno-unused-variable -Wno-unused-function -Wno-tautological-compare -Wno-shift-overflow
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COMPILER_RT_${TARCH}:=${CC_RT_CLANG}
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COMPILER_RT_FLAGS_${TARCH}:=${CC_RT_EXTRA_CLANG}
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endif
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CPP_${TARCH}:=${GCCPREFIX}cpp
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AS_${TARCH}:=${GCCPREFIX}as ${ASFLAGS}
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LD_${TARCH}:=${GCCPREFIX}ld${LINKER_SUFFIX} ${LDFLAGS}
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ifeq (\$(CONFIG_ARM64_A53_ERRATUM_843419)\$(CONFIG_LP_ARM64_A53_ERRATUM_843419),y)
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LD_${TARCH}+=${LDFLAGS_ARM64_A53_ERRATUM_843419}
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endif
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NM_${TARCH}:=${GCCPREFIX}nm
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OBJCOPY_${TARCH}:=${GCCPREFIX}objcopy
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OBJDUMP_${TARCH}:=${GCCPREFIX}objdump
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READELF_${TARCH}:=${GCCPREFIX}readelf
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STRIP_${TARCH}:=${GCCPREFIX}strip
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AR_${TARCH}:=${GCCPREFIX}ar
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CROSS_COMPILE_${TARCH}:=${GCCPREFIX}
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EOF
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}
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# Architecture definitions
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SUPPORTED_ARCHITECTURES="arm arm64 mipsel riscv x64 x86"
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arch_config_arm() {
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TARCH="arm"
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TBFDARCHS="littlearm"
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TCLIST="armv7-a armv7a"
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TWIDTH="32"
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TSUPP="arm armv4 armv7 armv7_m"
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TABI="eabi"
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}
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arch_config_arm64() {
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TARCH="arm64"
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TBFDARCHS="littleaarch64"
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TCLIST="aarch64"
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TWIDTH="64"
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TSUPP="arm64 armv8_64"
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TABI="elf"
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}
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arch_config_riscv() {
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TARCH="riscv"
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TBFDARCHS="littleriscv"
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TCLIST="riscv"
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TWIDTH="64"
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TABI="elf"
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}
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arch_config_x64() {
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TARCH="x86_64"
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TBFDARCHS="x86-64"
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TCLIST="x86_64"
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TWIDTH="64"
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TABI="elf"
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}
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arch_config_x86() {
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TARCH="x86_32"
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TBFDARCHS="i386"
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TCLIST="i386 x86_64"
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TWIDTH="32"
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TABI="elf"
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CC_RT_EXTRA_GCC="--wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3"
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}
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arch_config_mipsel() {
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TARCH="mips"
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TBFDARCHS="tradlittlemips littlemips"
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TCLIST="mipsel"
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TWIDTH="32"
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TSUPP="mips mipsel"
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TABI="elf"
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TENDIAN="EL"
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}
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test_architecture() {
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local architecture=$1
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local endian gccprefix search
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GCCPREFIX="invalid"
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unset TABI TARCH TBFDARCH TCLIST TENDIAN TSUPP TWIDTH
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unset CC_RT_EXTRA_GCC CC_RT_EXTRA_CLANG
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unset GCC CLANG
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if type arch_config_$architecture > /dev/null; then
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arch_config_$architecture
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else
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die "no architecture definition for $architecture"
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fi
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# To override toolchain, define CROSS_COMPILE_$arch or CROSS_COMPILE as
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# environment variable.
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# Ex: CROSS_COMPILE_arm="armv7a-cros-linux-gnueabi-"
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# CROSS_COMPILE_x86="i686-pc-linux-gnu-"
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search="$(eval echo \$CROSS_COMPILE_$architecture 2>/dev/null)"
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search="$search $CROSS_COMPILE"
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for toolchain in $TCLIST; do
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search="$search $XGCCPATH$toolchain-$TABI-"
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search="$search $toolchain-$TABI-"
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search="$search $toolchain-linux-gnu-"
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search="$search $toolchain-"
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done
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echo "# $architecture TARCH_SEARCH=$search"
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# Search toolchain by checking assembler capability.
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for TBFDARCH in $TBFDARCHS; do
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for gccprefix in $search ""; do
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program_exists "${gccprefix}as" || continue
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for endian in $TENDIAN ""; do
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testas "$gccprefix" "$TWIDTH" "$TBFDARCH" \
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"" "$endian" && break 3
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testas "$gccprefix" "$TWIDTH" "$TBFDARCH" \
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"TRUE" "$endian" && break 3
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done
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done
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done
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if [ "invalid" != "$GCCPREFIX" ]; then
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GCC="${GCCPREFIX}gcc"
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fi
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for clang_arch in $TCLIST invalid; do
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testcc "clang" "-target ${clang_arch}-$TABI -c" && break
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done
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if [ "invalid" != "$clang_arch" ]; then
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# FIXME: this may break in a clang && !gcc configuration,
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# but that's more of a clang limitation. Let's be optimistic
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# that this will change in the future.
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CLANG="clang -target ${clang_arch}-${TABI} -ccc-gcc-name ${GCC}"
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fi
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if [ -z "$GCC" -a -z "$CLANG" ]; then
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echo "Warning: no suitable compiler for $architecture." >&2
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return 1
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fi
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}
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# This loops over all supported architectures.
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for architecture in $SUPPORTED_ARCHITECTURES; do
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if test_architecture $architecture; then
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detect_special_flags "$architecture"
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detect_compiler_runtime "$architecture"
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report_arch_toolchain
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fi
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done
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