1#!/bin/bash -e
2
3# Copyright 2019 Google Inc. All rights reserved.
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17# Script to generate a symbol ordering file that sorts bss section symbols by
18# their sizes.
19# Inputs:
20#  Environment:
21#   CLANG_BIN: path to the clang bin directory
22#  Arguments:
23#   $1: Input ELF file
24#   $2: Output symbol ordering file
25
26set -o pipefail
27
28${CLANG_BIN}/llvm-nm --size-sort $1 | awk '{if ($2 == "b" || $2 == "B") print $3}' > $2
29