diff options
| author | NeilBrown <neilb@suse.com> | 2017-10-12 14:22:04 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-10-12 12:26:52 -0700 |
| commit | 2aab9c3ca47dd4fcc19a8743c6e4d348640dd3fa (patch) | |
| tree | 9cbb926764c55f857ea6a367c96514a53d4b8897 /scripts/faddr2line | |
| parent | 3206e7d5e25ef94b5a29e2c81e6fb8d5fb48422f (diff) | |
| download | lwn-2aab9c3ca47dd4fcc19a8743c6e4d348640dd3fa.tar.gz lwn-2aab9c3ca47dd4fcc19a8743c6e4d348640dd3fa.zip | |
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>
Diffstat (limited to 'scripts/faddr2line')
| -rwxr-xr-x | scripts/faddr2line | 5 |
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 |