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- #!/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; } }'
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