x86: Add optimized popcnt variants
[linux-2.6.git] / scripts / config
index 68b9761..608d7fd 100755 (executable)
@@ -9,8 +9,10 @@ config options command ...
 commands:
        --enable|-e option   Enable option
        --disable|-d option  Disable option
-       --module|-m option      Turn option into a module
-       --state|-s option       Print state of option (n,y,m,undef)
+       --module|-m option   Turn option into a module
+       --set-str option value
+                            Set option to "value"
+       --state|-s option    Print state of option (n,y,m,undef)
 
        --enable-after|-E beforeopt option
                              Enable option directly after other option
@@ -26,8 +28,6 @@ options:
 
 config doesn't check the validity of the .config file. This is done at next
  make time.
-The options need to be already in the file before they can be changed,
-but sometimes you can cheat with the --*-after options.
 EOL
        exit 1
 }
@@ -45,8 +45,18 @@ checkarg() {
        ARG="`echo $ARG | tr a-z A-Z`"
 }
 
-replace() {
-       sed -i -e "$@" $FN
+set_var() {
+       local name=$1 new=$2 before=$3
+
+       name_re="^($name=|# $name is not set)"
+       before_re="^($before=|# $before is not set)"
+       if test -n "$before" && grep -Eq "$before_re" "$FN"; then
+               sed -ri "/$before_re/a $new" "$FN"
+       elif grep -Eq "$name_re" "$FN"; then
+               sed -ri "s:$name_re.*:$new:" "$FN"
+       else
+               echo "$new" >>"$FN"
+       fi
 }
 
 if [ "$1" = "--file" ]; then
@@ -54,37 +64,52 @@ if [ "$1" = "--file" ]; then
        if [ "$FN" = "" ] ; then
                usage
        fi
-       shift
-       shift
+       shift 2
 else
        FN=.config
 fi
 
+if [ "$1" = "" ] ; then
+       usage
+fi
+
 while [ "$1" != "" ] ; do
        CMD="$1"
        shift
        case "$CMD" in
-       --enable|-e)
+       --refresh)
+               ;;
+       --*-after)
+               checkarg "$1"
+               A=$ARG
+               checkarg "$2"
+               B=$ARG
+               shift 2
+               ;;
+       --*)
                checkarg "$1"
-               replace "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
                shift
                ;;
+       esac
+       case "$CMD" in
+       --enable|-e)
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=y"
+               ;;
 
        --disable|-d)
-               checkarg "$1"
-               replace "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
-               shift
+               set_var "CONFIG_$ARG" "# CONFIG_$ARG is not set"
                ;;
 
        --module|-m)
-               checkarg "$1"
-               replace "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
-                       -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=m"
+               ;;
+
+       --set-str)
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=\"$1\""
                shift
                ;;
 
        --state|-s)
-               checkarg "$1"
                if grep -q "# CONFIG_$ARG is not set" $FN ; then
                        echo n
                else
@@ -97,44 +122,18 @@ while [ "$1" != "" ] ; do
                                echo "$V"
                        fi
                fi
-               shift
                ;;
 
        --enable-after|-E)
-               checkarg "$1"
-               A=$ARG
-               checkarg "$2"
-               B=$ARG
-               replace "/CONFIG_$A=[my]/aCONFIG_$B=y" \
-                       -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=y" \
-                       -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
-               shift
-               shift
+               set_var "CONFIG_$B" "CONFIG_$B=y" "CONFIG_$A"
                ;;
 
        --disable-after|-D)
-               checkarg "$1"
-               A=$ARG
-               checkarg "$2"
-               B=$ARG
-               replace "/CONFIG_$A=[my]/a# CONFIG_$B is not set" \
-               -e "/# CONFIG_$ARG is not set/a/# CONFIG_$ARG is not set" \
-               -e "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
-               shift
-               shift
+               set_var "CONFIG_$B" "# CONFIG_$B is not set" "CONFIG_$A"
                ;;
 
        --module-after|-M)
-               checkarg "$1"
-               A=$ARG
-               checkarg "$2"
-               B=$ARG
-               replace "/CONFIG_$A=[my]/aCONFIG_$B=m" \
-                       -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=m" \
-                       -e "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
-                       -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
-               shift
-               shift
+               set_var "CONFIG_$B" "CONFIG_$B=m" "CONFIG_$A"
                ;;
 
        # undocumented because it ignores --file (fixme)