media/libvpx/lint_config.sh

   1 #!/bin/bash -e
   2 #
   3 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 # This script is used to compare vpx_config.h and vpx_config.asm to
   8 # verify the two files match.
   9 #
  10 # Arguments:
  11 #
  12 # -h - C Header file.
  13 # -a - ASM file.
  14 # -p - Print the options if correct.
  15 # -o - Output file.
  16 #
  17 # Usage:
  18 #
  19 # # Compare the two configuration files and output the final results.
  20 # ./lint_config.sh -h vpx_config.h -a vpx_config.asm -o libvpx.config -p
  21
  22 export LC_ALL=C
  23 print_final="no"
  24
  25 while getopts "h:a:o:p" flag
  26 do
  27   if [ "$flag" = "h" ]; then
  28     header_file=$OPTARG
  29   elif [ "$flag" = "a" ]; then
  30     asm_file=$OPTARG
  31   elif [ "$flag" = "o" ]; then
  32     out_file=$OPTARG
  33   elif [ "$flag" = "p" ]; then
  34     print_final="yes"
  35   fi
  36 done
  37
  38 if [ -z "$header_file" ]; then
  39   echo "Header file not specified."
  40   false
  41   exit
  42 fi
  43
  44 if [ -z "$asm_file" ]; then
  45   echo "ASM file not specified."
  46   false
  47   exit
  48 fi
  49
  50 # Concat header file and assembly file and select those ended with 0 or 1.
  51 combined_config="$(cat $header_file $asm_file | grep -E ' +[01] *$')"
  52
  53 # Extra filtering for known exceptions.
  54 combined_config="$(echo "$combined_config" | grep -v WIDE_REFERENCE)"
  55 combined_config="$(echo "$combined_config" | grep -v ARCHITECTURE)"
  56 combined_config="$(echo "$combined_config" | grep -v DO1STROUNDING)"
  57
  58 # Remove all spaces.
  59 combined_config="$(echo "$combined_config" | sed 's/[ \t]//g')"
  60
  61 # Remove #define in the header file.
  62 combined_config="$(echo "$combined_config" | sed 's/.*define//')"
  63
  64 # Remove equ in the ASM file.
  65 combined_config="$(echo "$combined_config" | sed 's/\.equ//')" # gas style
  66 combined_config="$(echo "$combined_config" | sed 's/equ//')" # rvds style
  67 combined_config="$(echo "$combined_config" | sed 's/\.set//')" # apple style
  68
  69 # Remove %define in YASM ASM files.
  70 combined_config="$(echo "$combined_config" | sed 's/%define\s *//')" # yasm style
  71
  72 # Remove useless comma in gas style assembly file.
  73 combined_config="$(echo "$combined_config" | sed 's/,//')"
  74
  75 # Substitute 0 with =no.
  76 combined_config="$(echo "$combined_config" | sed 's/0$/=no/')"
  77
  78 # Substitute 1 with =yes.
  79 combined_config="$(echo "$combined_config" | sed 's/1$/=yes/')"
  80
  81 # Find the mismatch variables.
  82 odd_config="$(echo "$combined_config" | sort | uniq -u)"
  83 odd_vars="$(echo "$odd_config" | sed 's/=.*//' | uniq)"
  84
  85 for var in $odd_vars; do
  86   echo "Error: Configuration mismatch for $var."
  87   echo "Header file: $header_file"
  88   echo "$(cat -n $header_file | grep "$var[ \t]")"
  89   echo "Assembly file: $asm_file"
  90   echo "$(cat -n $asm_file | grep "$var[ \t]")"
  91   echo ""
  92 done
  93
  94 if [ -n "$odd_vars" ]; then
  95   false
  96   exit
  97 fi
  98
  99 if [ "$print_final" = "no" ]; then
 100   exit
 101 fi
 102
 103 # Do some additional filter to make libvpx happy.
 104 combined_config="$(echo "$combined_config" | grep -v ARCH_X86=no)"
 105 combined_config="$(echo "$combined_config" | grep -v ARCH_X86_64=no)"
 106
 107 # Print out the unique configurations.
 108 if [ -n "$out_file" ]; then
 109   echo "$combined_config" | sort | uniq > $out_file
 110 else
 111   echo "$combined_config" | sort | uniq
 112 fi