diff options
| -rwxr-xr-x | scripts/create_lk_drm.sh | 44 | ||||
| -rwxr-xr-x | scripts/drm-scripts-gentree.pl | 254 |
2 files changed, 266 insertions, 32 deletions
diff --git a/scripts/create_lk_drm.sh b/scripts/create_lk_drm.sh index ddfbf499..b18a9514 100755 --- a/scripts/create_lk_drm.sh +++ b/scripts/create_lk_drm.sh @@ -2,10 +2,10 @@ # script to create a Linux Kernel tree from the DRM tree for diffing etc.. # # Original author - Dave Airlie (C) 2004 - airlied@linux.ie -# +# kernel_version to remove below (e.g. 2.6.24) -if [ $# -lt 1 ] ;then - echo usage: $0 output_dir +if [ $# -lt 2 ] ;then + echo usage: $0 output_dir kernel_version exit 1 fi @@ -15,43 +15,23 @@ if [ ! -d shared-core -o ! -d linux-core ] ;then fi OUTDIR=$1/drivers/char/drm/ - +KERNEL_VERS=$2 echo "Copying kernel independent files" -mkdir -p $OUTDIR +mkdir -p $OUTDIR/.tmp ( cd linux-core/ ; make drm_pciids.h ) -cp shared-core/*.[ch] $OUTDIR -cp linux-core/*.[ch] $OUTDIR -cp linux-core/Makefile.kernel $OUTDIR/Makefile +cp shared-core/*.[ch] $OUTDIR/.tmp +cp linux-core/*.[ch] $OUTDIR/.tmp +cp linux-core/Makefile.kernel $OUTDIR/.tmp/Makefile echo "Copying 2.6 Kernel files" -cp linux-core/Kconfig $OUTDIR/ +cp linux-core/Kconfig $OUTDIR/.tmp +./scripts/drm-scripts-gentree.pl $KERNEL_VERS $OUTDIR/.tmp $OUTDIR cd $OUTDIR +rm -rf .tmp rm via_ds.[ch] -for i in via*.[ch] -do -unifdef -D__linux__ -DVIA_HAVE_DMABLIT -DVIA_HAVE_CORE_MM $i > $i.tmp -mv $i.tmp $i -done - rm sis_ds.[ch] -for i in sis*.[ch] -do -unifdef -D__linux__ -DVIA_HAVE_DMABLIT -DSIS_HAVE_CORE_MM $i > $i.tmp -mv $i.tmp $i -done - -for i in i915*.[ch] -do -unifdef -D__linux__ -DI915_HAVE_FENCE -DI915_HAVE_BUFFER $i > $i.tmp -mv $i.tmp $i -done - -for i in drm*.[ch] -do -unifdef -UDRM_ODD_MM_COMPAT -D__linux__ $i > $i.tmp -mv $i.tmp $i -done + cd - diff --git a/scripts/drm-scripts-gentree.pl b/scripts/drm-scripts-gentree.pl new file mode 100755 index 00000000..cbc10175 --- /dev/null +++ b/scripts/drm-scripts-gentree.pl @@ -0,0 +1,254 @@ +#!/usr/bin/perl +# +# Original version were part of Gerd Knorr's v4l scripts. +# +# Several improvements by (c) 2005-2007 Mauro Carvalho Chehab +# +# Largely re-written (C) 2007 Trent Piepho <xyzzy@speakeasy.org> +# Stolen for DRM usage by airlied +# +# Theory of Operation +# +# This acts as a sort of mini version of cpp, which will process +# #if/#elif/#ifdef/etc directives to strip out code used to support +# multiple kernel versions or otherwise not wanted to be sent upstream to +# git. +# +# Conditional compilation directives fall into two catagories, +# "processed" and "other". The "other" directives are ignored and simply +# output as they come in without changes (see 'keep' exception). The +# "processed" variaty are evaluated and only the lines in the 'true' part +# are kept, like cpp would do. +# +# If gentree knows the result of an expression, that directive will be +# "processed", otherwise it will be an "other". gentree knows the value +# of LINUX_VERSION_CODE, BTTV_VERSION_CODE, the KERNEL_VERSION(x,y,z) +# macro, numeric constants like 0 and 1, and a few defines like MM_KERNEL +# and STV0297_CS2. +# +# An exception is if the comment "/*KEEP*/" appears after the expression, +# in which case that directive will be considered an "other" and not +# processed, other than to remove the keep comment. +# +# Known bugs: +# don't specify the root directory e.g. '/' or even '////' +# directives continued with a back-slash will always be ignored +# you can't modify a source tree in-place, i.e. source dir == dest dir + +use strict; +use File::Find; +use Fcntl ':mode'; + +my $VERSION = shift; +my $SRC = shift; +my $DESTDIR = shift; + +if (!defined($DESTDIR)) { + print "Usage:\ngentree.pl\t<version> <source dir> <dest dir>\n\n"; + exit; +} + +my $BTTVCODE = KERNEL_VERSION(0,9,17); +my ($LINUXCODE, $extra) = kernel_version($VERSION); +my $DEBUG = 0; + +my %defs = ( + 'LINUX_VERSION_CODE' => $LINUXCODE, + 'MM_KERNEL' => ($extra =~ /-mm/)?1:0, + 'DRM_ODD_MM_COMPAT' => 0, + 'I915_HAVE_FENCE' => 1, + 'I915_HAVE_BUFFER' => 1, + 'VIA_HAVE_DMABLIT' => 1, + 'VIA_HAVE_CORE_MM' => 1, + 'VIA_HAVE_FENCE' => 1, + 'VIA_HAVE_BUFFER' => 1, + 'SIS_HAVE_CORE_MM' => 1, + 'DRM_FULL_MM_COMPAT' => 1, + '__linux__' => 1, +); + +################################################################# +# helpers + +sub kernel_version($) { + $_[0] =~ m/(\d+)\.(\d+)\.(\d+)(.*)/; + return ($1*65536 + $2*256 + $3, $4); +} + +# used in eval() +sub KERNEL_VERSION($$$) { return $_[0]*65536 + $_[1]*256 + $_[2]; } + +sub evalexp($) { + local $_ = shift; + s|/\*.*?\*/||go; # delete /* */ comments + s|//.*$||o; # delete // comments + s/\bdefined\s*\(/(/go; # defined(foo) to (foo) + while (/\b([_A-Za-z]\w*)\b/go) { + if (exists $defs{$1}) { + my $id = $1; my $pos = $-[0]; + s/$id/$defs{$id}/; + pos = $-[0]; + } elsif ($1 ne 'KERNEL_VERSION') { + return(undef); + } + } + return(eval($_) ? 1 : 0); +} + +################################################################# +# filter out version-specific code + +sub filter_source ($$) { + my ($in,$out) = @_; + my $line; + my $level=0; + my %if = (); + my %state = (); + + my @dbgargs = \($level, %state, %if, $line); + sub dbgline($\@) { + my $level = ${$_[1][0]}; + printf STDERR ("/* BP %4d $_[0] state=$_[1][1]->{$level} if=$_[1][2]->{$level} level=$level (${$_[1][3]}) */\n", $.) if $DEBUG; + } + + open IN, '<', $in or die "Error opening $in: $!\n"; + open OUT, '>', $out or die "Error opening $out: $!\n"; + + print STDERR "File: $in, for kernel $VERSION($LINUXCODE)/\n" if $DEBUG; + + while ($line = <IN>) { + chomp $line; + next if ($line =~ m/^#include \"compat.h\"/o); +# next if ($line =~ m/[\$]Id:/); + + # For "#if 0 /*KEEP*/;" the ; should be dropped too + if ($line =~ m@^\s*#\s*if(n?def)?\s.*?(\s*/\*\s*(?i)keep\s*\*/;?)@) { + $state{$level} = "ifother"; + $if{$level} = 1; + dbgline "#if$1 (keep)", @dbgargs; + $line =~ s/\Q$2\E//; + $level++; + } + # handle all ifdef/ifndef lines + elsif ($line =~ /^\s*#\s*if(n?)def\s*(\w+)/o) { + if (exists $defs{$2}) { + $state{$level} = 'if'; + $if{$level} = ($1 eq 'n') ? !$defs{$2} : $defs{$2}; + dbgline "#if$1def $2", @dbgargs; + $level++; + next; + } + $state{$level} = "ifother"; + $if{$level} = 1; + dbgline "#if$1def (other)", @dbgargs; + $level++; + } + # handle all ifs + elsif ($line =~ /^\s*#\s*if\s+(.*)$/o) { + my $res = evalexp($1); + if (defined $res) { + $state{$level} = 'if'; + $if{$level} = $res; + dbgline '#if '.($res?'(yes)':'(no)'), @dbgargs; + $level++; + next; + } else { + $state{$level} = 'ifother'; + $if{$level} = 1; + dbgline '#if (other)', @dbgargs; + $level++; + } + } + # handle all elifs + elsif ($line =~ /^\s*#\s*elif\s+(.*)$/o) { + my $exp = $1; + $level--; + $level < 0 and die "more elifs than ifs"; + $state{$level} =~ /if/ or die "unmatched elif"; + + if ($state{$level} eq 'if' && !$if{$level}) { + my $res = evalexp($exp); + defined $res or die 'moving from if to ifother'; + $state{$level} = 'if'; + $if{$level} = $res; + dbgline '#elif1 '.($res?'(yes)':'(no)'), @dbgargs; + $level++; + next; + } elsif ($state{$level} ne 'ifother') { + $if{$level} = 0; + $state{$level} = 'elif'; + dbgline '#elif0', @dbgargs; + $level++; + next; + } + $level++; + } + elsif ($line =~ /^\s*#\s*else/o) { + $level--; + $level < 0 and die "more elses than ifs"; + $state{$level} =~ /if/ or die "unmatched else"; + $if{$level} = !$if{$level} if ($state{$level} eq 'if'); + $state{$level} =~ s/^if/else/o; # if -> else, ifother -> elseother, elif -> elif + dbgline '#else', @dbgargs; + $level++; + next if $state{$level-1} !~ /other$/o; + } + elsif ($line =~ /^\s*#\s*endif/o) { + $level--; + $level < 0 and die "more endifs than ifs"; + dbgline '#endif', @dbgargs; + next if $state{$level} !~ /other$/o; + } + + my $print = 1; + for (my $i=0;$i<$level;$i++) { + next if $state{$i} =~ /other$/o; # keep code in ifother/elseother blocks + if (!$if{$i}) { + $print = 0; + dbgline 'DEL', @{[\$i, \%state, \%if, \$line]}; + last; + } + } + print OUT "$line\n" if $print; + } + close IN; + close OUT; +} + +################################################################# + +sub parse_dir { + my $file = $File::Find::name; + + return if ($file =~ /CVS/); + return if ($file =~ /~$/); + + my $f2 = $file; + $f2 =~ s/^\Q$SRC\E/$DESTDIR/; + + my $mode = (stat($file))[2]; + if ($mode & S_IFDIR) { + print("mkdir -p '$f2'\n"); + system("mkdir -p '$f2'"); # should check for error + return; + } + print "from $file to $f2\n"; + + if ($file =~ m/.*\.[ch]$/) { + filter_source($file, $f2); + } else { + system("cp $file $f2"); + } +} + + +# main + +printf "kernel is %s (0x%x)\n",$VERSION,$LINUXCODE; + +# remove any trailing slashes from dir names. don't pass in just '/' +$SRC =~ s|/*$||; $DESTDIR =~ s|/*$||; + +print "finding files at $SRC\n"; + +find({wanted => \&parse_dir, no_chdir => 1}, $SRC); |