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authorNeilBrown <neilb@suse.com>2017-10-12 14:22:04 +1100
committerLinus Torvalds <torvalds@linux-foundation.org>2017-10-12 12:26:52 -0700
commit2aab9c3ca47dd4fcc19a8743c6e4d348640dd3fa (patch)
tree9cbb926764c55f857ea6a367c96514a53d4b8897
parent3206e7d5e25ef94b5a29e2c81e6fb8d5fb48422f (diff)
downloadlinux-sh-2aab9c3ca47dd4fcc19a8743c6e4d348640dd3fa.tar.gz
scripts: fix faddr2line to work on last symbol
If faddr2line is given a function name which is the last one listed by "nm -n", it will fail because it never finds the next symbol. So teach the awk script to catch that possibility, and use 'size' to provide the end point of the last function. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rwxr-xr-xscripts/faddr2line5
1 files changed, 3 insertions, 2 deletions
diff --git a/scripts/faddr2line b/scripts/faddr2line
index 29df825d375c..2f6ce802397d 100755
--- a/scripts/faddr2line
+++ b/scripts/faddr2line
@@ -103,11 +103,12 @@ __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 $2}')
while read symbol; do
local fields=($symbol)
local sym_base=0x${fields[0]}
local sym_type=${fields[1]}
- local sym_end=0x${fields[3]}
+ local sym_end=${fields[3]}
# calculate the size
local sym_size=$(($sym_end - $sym_base))
@@ -157,7 +158,7 @@ __faddr2line() {
addr2line -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;"
DONE=1
- done < <(nm -n $objfile | awk -v fn=$func '$3 == fn { found=1; line=$0; start=$1; next } found == 1 { found=0; print line, $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; }')
}
[[ $# -lt 2 ]] && usage