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scripts/faddr2line: extend usage on generic arch
When cross-compiling, fadd2line should use the binary tool used for the target system, rather than that of the host. Link: http://lkml.kernel.org/r/20171121092911.GA150711@sofia Signed-off-by: Liu Changcheng <changcheng.liu@intel.com> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: NeilBrown <neilb@suse.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 14 additions and 7 deletions
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@ -44,9 +44,16 @@
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set -o errexit
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set -o nounset
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READELF="${CROSS_COMPILE}readelf"
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ADDR2LINE="${CROSS_COMPILE}addr2line"
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SIZE="${CROSS_COMPILE}size"
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NM="${CROSS_COMPILE}nm"
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command -v awk >/dev/null 2>&1 || die "awk isn't installed"
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command -v readelf >/dev/null 2>&1 || die "readelf isn't installed"
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command -v addr2line >/dev/null 2>&1 || die "addr2line isn't installed"
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command -v ${READELF} >/dev/null 2>&1 || die "readelf isn't installed"
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command -v ${ADDR2LINE} >/dev/null 2>&1 || die "addr2line isn't installed"
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command -v ${SIZE} >/dev/null 2>&1 || die "size isn't installed"
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command -v ${NM} >/dev/null 2>&1 || die "nm isn't installed"
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usage() {
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echo "usage: faddr2line <object file> <func+offset> <func+offset>..." >&2
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@ -69,10 +76,10 @@ die() {
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find_dir_prefix() {
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local objfile=$1
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local start_kernel_addr=$(readelf -sW $objfile | awk '$8 == "start_kernel" {printf "0x%s", $2}')
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local start_kernel_addr=$(${READELF} -sW $objfile | awk '$8 == "start_kernel" {printf "0x%s", $2}')
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[[ -z $start_kernel_addr ]] && return
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local file_line=$(addr2line -e $objfile $start_kernel_addr)
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local file_line=$(${ADDR2LINE} -e $objfile $start_kernel_addr)
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[[ -z $file_line ]] && return
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local prefix=${file_line%init/main.c:*}
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@ -104,7 +111,7 @@ __faddr2line() {
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# Go through each of the object's symbols which match the func name.
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# In rare cases there might be duplicates.
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file_end=$(size -Ax $objfile | awk '$1 == ".text" {print $2}')
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file_end=$(${SIZE} -Ax $objfile | awk '$1 == ".text" {print $2}')
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while read symbol; do
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local fields=($symbol)
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local sym_base=0x${fields[0]}
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@ -156,10 +163,10 @@ __faddr2line() {
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# pass real address to addr2line
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echo "$func+$offset/$sym_size:"
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addr2line -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;"
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${ADDR2LINE} -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;"
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DONE=1
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done < <(nm -n $objfile | awk -v fn=$func -v end=$file_end '$3 == fn { found=1; line=$0; start=$1; next } found == 1 { found=0; print line, "0x"$1 } END {if (found == 1) print line, end; }')
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done < <(${NM} -n $objfile | awk -v fn=$func -v end=$file_end '$3 == fn { found=1; line=$0; start=$1; next } found == 1 { found=0; print line, "0x"$1 } END {if (found == 1) print line, end; }')
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}
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[[ $# -lt 2 ]] && usage
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