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authorLiu, Changcheng <changcheng.liu@intel.com>2017-11-29 16:10:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-29 18:40:42 -0800
commit95a87982541932503d3f59aba4c30b0bde0a6294 (patch)
treeac5ac2252da47a37b67881641b2af0a75a15ea28
parent5c9d2d5c269c498aa9a546e8d2158a3e4142a1a2 (diff)
download96b-common-95a87982541932503d3f59aba4c30b0bde0a6294.tar.gz
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>
-rwxr-xr-xscripts/faddr2line21
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