linux-imx

#!/bin/bash

# SPDX-License-Identifier: GPL-2.0

#

# Translate stack dump function offsets.

#

# addr2line doesn't work with KASLR addresses.  This works similarly to

# addr2line, but instead takes the 'func+0x123' format as input:

#

#   $ ./scripts/faddr2line ~/k/vmlinux meminfo_proc_show+0x5/0x568

#   meminfo_proc_show+0x5/0x568:

#   meminfo_proc_show at fs/proc/meminfo.c:27

#

# If the address is part of an inlined function, the full inline call chain is

# printed:

#

#   $ ./scripts/faddr2line ~/k/vmlinux native_write_msr+0x6/0x27

#   native_write_msr+0x6/0x27:

#   arch_static_branch at arch/x86/include/asm/msr.h:121

#    (inlined by) static_key_false at include/linux/jump_label.h:125

#    (inlined by) native_write_msr at arch/x86/include/asm/msr.h:125

#

# The function size after the '/' in the input is optional, but recommended.

# It's used to help disambiguate any duplicate symbol names, which can occur

# rarely.  If the size is omitted for a duplicate symbol then it's possible for

# multiple code sites to be printed:

#

#   $ ./scripts/faddr2line ~/k/vmlinux raw_ioctl+0x5

#   raw_ioctl+0x5/0x20:

#   raw_ioctl at drivers/char/raw.c:122

#

#   raw_ioctl+0x5/0xb1:

#   raw_ioctl at net/ipv4/raw.c:876

#

# Multiple addresses can be specified on a single command line:

#

#   $ ./scripts/faddr2line ~/k/vmlinux type_show+0x10/45 free_reserved_area+0x90

#   type_show+0x10/0x2d:

#   type_show at drivers/video/backlight/backlight.c:213

#

#   free_reserved_area+0x90/0x123:

#   free_reserved_area at mm/page_alloc.c:6429 (discriminator 2)

​

​

set -o errexit

set -o nounset

​

READELF="${CROSS_COMPILE:-}readelf"

ADDR2LINE="${CROSS_COMPILE:-}addr2line"

SIZE="${CROSS_COMPILE:-}size"

NM="${CROSS_COMPILE:-}nm"

​

command -v awk >/dev/null 2>&1 || die "awk isn't installed"

command -v ${READELF} >/dev/null 2>&1 || die "readelf isn't installed"

command -v ${ADDR2LINE} >/dev/null 2>&1 || die "addr2line isn't installed"

command -v ${SIZE} >/dev/null 2>&1 || die "size isn't installed"

command -v ${NM} >/dev/null 2>&1 || die "nm isn't installed"

​

usage() {

    echo "usage: faddr2line [--list] <object file> <func+offset> <func+offset>..." >&2

    exit 1

}

​

warn() {