| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # Disassemble a single function. |
| # |
| # usage: objdump-func <file> <func> |
| |
| set -o errexit |
| set -o nounset |
| |
| OBJDUMP="${CROSS_COMPILE:-}objdump" |
| |
| command -v gawk >/dev/null 2>&1 || die "gawk isn't installed" |
| |
| usage() { |
| echo "usage: objdump-func <file> <func>" >&2 |
| exit 1 |
| } |
| |
| [[ $# -lt 2 ]] && usage |
| |
| OBJ=$1; shift |
| FUNC=$1; shift |
| |
| # Secret feature to allow adding extra objdump args at the end |
| EXTRA_ARGS=$@ |
| |
| # Note this also matches compiler-added suffixes like ".cold", etc |
| ${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; } }' |
