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#!/bin/bash -e
#
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script is used to compare vpx_config.h and vpx_config.asm to
# verify the two files match.
#
# Arguments:
#
# -h - C Header file.
# -a - ASM file.
# -p - Print the options if correct.
# -o - Output file.
#
# Usage:
#
# # Compare the two configuration files and output the final results.
# ./lint_config.sh -h vpx_config.h -a vpx_config.asm -o libvpx.config -p
export LC_ALL=C
print_final="no"
while getopts "h:a:o:p" flag
do
if [ "$flag" = "h" ]; then
header_file=$OPTARG
elif [ "$flag" = "a" ]; then
asm_file=$OPTARG
elif [ "$flag" = "o" ]; then
out_file=$OPTARG
elif [ "$flag" = "p" ]; then
print_final="yes"
fi
done
if [ -z "$header_file" ]; then
echo "Header file not specified."
false
exit
fi
if [ -z "$asm_file" ]; then
echo "ASM file not specified."
false
exit
fi
# Concat header file and assembly file and select those ended with 0 or 1.
combined_config="$(cat $header_file $asm_file | grep -E ' +[01] *$')"
# Extra filtering for known exceptions.
combined_config="$(echo "$combined_config" | grep -v WIDE_REFERENCE)"
combined_config="$(echo "$combined_config" | grep -v ARCHITECTURE)"
combined_config="$(echo "$combined_config" | grep -v DO1STROUNDING)"
# Remove all spaces.
combined_config="$(echo "$combined_config" | sed 's/[ \t]//g')"
# Remove #define in the header file.
combined_config="$(echo "$combined_config" | sed 's/.*define//')"
# Remove equ in the ASM file.
combined_config="$(echo "$combined_config" | sed 's/\.equ//')" # gas style
combined_config="$(echo "$combined_config" | sed 's/equ//')" # rvds style
combined_config="$(echo "$combined_config" | sed 's/\.set//')" # apple style
# Remove %define in YASM ASM files.
combined_config="$(echo "$combined_config" | sed 's/%define\s *//')" # yasm style
# Remove useless comma in gas style assembly file.
combined_config="$(echo "$combined_config" | sed 's/,//')"
# Substitute 0 with =no.
combined_config="$(echo "$combined_config" | sed 's/0$/=no/')"
# Substitute 1 with =yes.
combined_config="$(echo "$combined_config" | sed 's/1$/=yes/')"
# Find the mismatch variables.
odd_config="$(echo "$combined_config" | sort | uniq -u)"
odd_vars="$(echo "$odd_config" | sed 's/=.*//' | uniq)"
for var in $odd_vars; do
echo "Error: Configuration mismatch for $var."
echo "Header file: $header_file"
echo "$(cat -n $header_file | grep "$var[ \t]")"
echo "Assembly file: $asm_file"
echo "$(cat -n $asm_file | grep "$var[ \t]")"
echo ""
done
if [ -n "$odd_vars" ]; then
false
exit
fi
if [ "$print_final" = "no" ]; then
exit
fi
# Do some additional filter to make libvpx happy.
combined_config="$(echo "$combined_config" | grep -v ARCH_X86=no)"
combined_config="$(echo "$combined_config" | grep -v ARCH_X86_64=no)"
# aom_dsp_rtcd_defs.h checks for definition here, not value.
combined_config="$(echo "$combined_config" | grep -v CONFIG_EXT_PARTITION_TYPES=no)"
# Print out the unique configurations.
if [ -n "$out_file" ]; then
echo "$combined_config" | sort | uniq > $out_file
else
echo "$combined_config" | sort | uniq
fi
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