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| author | Liu, Changcheng <changcheng.liu@intel.com> | 2017-11-29 16:10:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-29 18:40:42 -0800 |
| commit | 95a87982541932503d3f59aba4c30b0bde0a6294 (patch) | |
| tree | ac5ac2252da47a37b67881641b2af0a75a15ea28 /scripts/faddr2line | |
| parent | 5c9d2d5c269c498aa9a546e8d2158a3e4142a1a2 (diff) | |
| download | lwn-95a87982541932503d3f59aba4c30b0bde0a6294.tar.gz lwn-95a87982541932503d3f59aba4c30b0bde0a6294.zip | |
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>
Diffstat (limited to 'scripts/faddr2line')
| -rwxr-xr-x | scripts/faddr2line | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/scripts/faddr2line b/scripts/faddr2line index 1f5ce959f596..39e07d8574dd 100755 --- a/scripts/faddr2line +++ b/scripts/faddr2line @@ -44,9 +44,16 @@ set -o errexit set -o nounset +READELF="${CROSS_COMPILE}readelf" +ADDR2LINE="${CROSS_COMPILE}addr2line" +SIZE="${CROSS_COMPILE}size" +NM="${CROSS_COMPILE}nm" + command -v awk >/dev/null 2>&1 || die "awk isn't installed" -command -v readelf >/dev/null 2>&1 || die "readelf isn't installed" -command -v addr2line >/dev/null 2>&1 || die "addr2line isn't installed" +command -v ${READELF} >/dev/null 2>&1 || die "readelf isn't installed" +command -v ${ADDR2LINE} >/dev/null 2>&1 || die "addr2line isn't installed" +command -v ${SIZE} >/dev/null 2>&1 || die "size isn't installed" +command -v ${NM} >/dev/null 2>&1 || die "nm isn't installed" usage() { echo "usage: faddr2line <object file> <func+offset> <func+offset>..." >&2 @@ -69,10 +76,10 @@ die() { find_dir_prefix() { local objfile=$1 - local start_kernel_addr=$(readelf -sW $objfile | awk '$8 == "start_kernel" {printf "0x%s", $2}') + local start_kernel_addr=$(${READELF} -sW $objfile | awk '$8 == "start_kernel" {printf "0x%s", $2}') [[ -z $start_kernel_addr ]] && return - local file_line=$(addr2line -e $objfile $start_kernel_addr) + local file_line=$(${ADDR2LINE} -e $objfile $start_kernel_addr) [[ -z $file_line ]] && return local prefix=${file_line%init/main.c:*} @@ -104,7 +111,7 @@ __faddr2line() { # Go through each of the object's symbols which match the func name. # In rare cases there might be duplicates. - file_end=$(size -Ax $objfile | awk '$1 == ".text" {print $2}') + file_end=$(${SIZE} -Ax $objfile | awk '$1 == ".text" {print $2}') while read symbol; do local fields=($symbol) local sym_base=0x${fields[0]} @@ -156,10 +163,10 @@ __faddr2line() { # pass real address to addr2line echo "$func+$offset/$sym_size:" - addr2line -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;" + ${ADDR2LINE} -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;" DONE=1 - 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"$1 } END {if (found == 1) print line, end; }') + done < <(${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; }') } [[ $# -lt 2 ]] && usage |