Commit | Line | Data |
---|---|---|
21e35023 JP |
1 | #!/bin/bash |
2 | # SPDX-License-Identifier: GPL-2.0 | |
3 | # | |
4 | # Disassemble a single function. | |
5 | # | |
6 | # usage: objdump-func <file> <func> | |
7 | ||
8 | set -o errexit | |
9 | set -o nounset | |
10 | ||
11 | OBJDUMP="${CROSS_COMPILE:-}objdump" | |
12 | ||
13 | command -v gawk >/dev/null 2>&1 || die "gawk isn't installed" | |
14 | ||
15 | usage() { | |
16 | echo "usage: objdump-func <file> <func>" >&2 | |
17 | exit 1 | |
18 | } | |
19 | ||
20 | [[ $# -lt 2 ]] && usage | |
21 | ||
22 | OBJ=$1; shift | |
23 | FUNC=$1; shift | |
24 | ||
25 | # Secret feature to allow adding extra objdump args at the end | |
26 | EXTRA_ARGS=$@ | |
27 | ||
28 | # Note this also matches compiler-added suffixes like ".cold", etc | |
29 | ${OBJDUMP} -wdr $EXTRA_ARGS $OBJ | gawk -M -v f=$FUNC '/^$/ { P=0; } $0 ~ "<" f "(\\..*)?>:" { P=1; O=strtonum("0x" $1); } { if (P) { o=strtonum("0x" $1); printf("%04x ", o-O); print $0; } }' |