| #!/usr/bin/env perl |
| |
| no strict 'refs'; |
| use warnings; |
| use Getopt::Long; |
| Getopt::Long::Configure("auto_help") if $Getopt::Long::VERSION > 2.32; |
| |
| my %ALL_FUNCS = (); |
| my @ALL_ARCHS; |
| my @ALL_FORWARD_DECLS; |
| my @REQUIRES; |
| |
| my %opts = (); |
| my %disabled = (); |
| my %required = (); |
| |
| my @argv; |
| foreach (@ARGV) { |
| $disabled{$1} = 1, next if /--disable-(.*)/; |
| $required{$1} = 1, next if /--require-(.*)/; |
| push @argv, $_; |
| } |
| |
| # NB: use GetOptions() instead of GetOptionsFromArray() for compatibility. |
| @ARGV = @argv; |
| GetOptions( |
| \%opts, |
| 'arch=s', |
| 'sym=s', |
| 'config=s', |
| ); |
| |
| foreach my $opt (qw/arch config/) { |
| if (!defined($opts{$opt})) { |
| warn "--$opt is required!\n"; |
| Getopt::Long::HelpMessage('-exit' => 1); |
| } |
| } |
| |
| foreach my $defs_file (@ARGV) { |
| if (!-f $defs_file) { |
| warn "$defs_file: $!\n"; |
| Getopt::Long::HelpMessage('-exit' => 1); |
| } |
| } |
| |
| open CONFIG_FILE, $opts{config} or |
| die "Error opening config file '$opts{config}': $!\n"; |
| |
| my %config = (); |
| while (<CONFIG_FILE>) { |
| next if !/^(?:CONFIG_|HAVE_)/; |
| chomp; |
| my @pair = split /=/; |
| $config{$pair[0]} = $pair[1]; |
| } |
| close CONFIG_FILE; |
| |
| # |
| # Routines for the RTCD DSL to call |
| # |
| sub vpx_config($) { |
| return (defined $config{$_[0]}) ? $config{$_[0]} : ""; |
| } |
| |
| sub specialize { |
| my $fn=$_[0]; |
| shift; |
| foreach my $opt (@_) { |
| eval "\$${fn}_${opt}=${fn}_${opt}"; |
| } |
| } |
| |
| sub add_proto { |
| my $fn = splice(@_, -2, 1); |
| $ALL_FUNCS{$fn} = \@_; |
| specialize $fn, "c"; |
| } |
| |
| sub require { |
| foreach my $fn (keys %ALL_FUNCS) { |
| foreach my $opt (@_) { |
| my $ofn = eval "\$${fn}_${opt}"; |
| next if !$ofn; |
| |
| # if we already have a default, then we can disable it, as we know |
| # we can do better. |
| my $best = eval "\$${fn}_default"; |
| if ($best) { |
| my $best_ofn = eval "\$${best}"; |
| if ($best_ofn && "$best_ofn" ne "$ofn") { |
| eval "\$${best}_link = 'false'"; |
| } |
| } |
| eval "\$${fn}_default=${fn}_${opt}"; |
| eval "\$${fn}_${opt}_link='true'"; |
| } |
| } |
| } |
| |
| sub forward_decls { |
| push @ALL_FORWARD_DECLS, @_; |
| } |
| |
| # |
| # Include the user's directives |
| # |
| foreach my $f (@ARGV) { |
| open FILE, "<", $f or die "cannot open $f: $!\n"; |
| my $contents = join('', <FILE>); |
| close FILE; |
| eval $contents or warn "eval failed: $@\n"; |
| } |
| |
| # |
| # Process the directives according to the command line |
| # |
| sub process_forward_decls() { |
| foreach (@ALL_FORWARD_DECLS) { |
| $_->(); |
| } |
| } |
| |
| sub determine_indirection { |
| vpx_config("CONFIG_RUNTIME_CPU_DETECT") eq "yes" or &require(@ALL_ARCHS); |
| foreach my $fn (keys %ALL_FUNCS) { |
| my $n = ""; |
| my @val = @{$ALL_FUNCS{$fn}}; |
| my $args = pop @val; |
| my $rtyp = "@val"; |
| my $dfn = eval "\$${fn}_default"; |
| $dfn = eval "\$${dfn}"; |
| foreach my $opt (@_) { |
| my $ofn = eval "\$${fn}_${opt}"; |
| next if !$ofn; |
| my $link = eval "\$${fn}_${opt}_link"; |
| next if $link && $link eq "false"; |
| $n .= "x"; |
| } |
| if ($n eq "x") { |
| eval "\$${fn}_indirect = 'false'"; |
| } else { |
| eval "\$${fn}_indirect = 'true'"; |
| } |
| } |
| } |
| |
| sub declare_function_pointers { |
| foreach my $fn (sort keys %ALL_FUNCS) { |
| my @val = @{$ALL_FUNCS{$fn}}; |
| my $args = pop @val; |
| my $rtyp = "@val"; |
| my $dfn = eval "\$${fn}_default"; |
| $dfn = eval "\$${dfn}"; |
| foreach my $opt (@_) { |
| my $ofn = eval "\$${fn}_${opt}"; |
| next if !$ofn; |
| print "$rtyp ${ofn}($args);\n"; |
| } |
| if (eval "\$${fn}_indirect" eq "false") { |
| print "#define ${fn} ${dfn}\n"; |
| } else { |
| print "RTCD_EXTERN $rtyp (*${fn})($args);\n"; |
| } |
| print "\n"; |
| } |
| } |
| |
| sub set_function_pointers { |
| foreach my $fn (sort keys %ALL_FUNCS) { |
| my @val = @{$ALL_FUNCS{$fn}}; |
| my $args = pop @val; |
| my $rtyp = "@val"; |
| my $dfn = eval "\$${fn}_default"; |
| $dfn = eval "\$${dfn}"; |
| if (eval "\$${fn}_indirect" eq "true") { |
| print " $fn = $dfn;\n"; |
| foreach my $opt (@_) { |
| my $ofn = eval "\$${fn}_${opt}"; |
| next if !$ofn; |
| next if "$ofn" eq "$dfn"; |
| my $link = eval "\$${fn}_${opt}_link"; |
| next if $link && $link eq "false"; |
| my $cond = eval "\$have_${opt}"; |
| print " if (${cond}) $fn = $ofn;\n" |
| } |
| } |
| } |
| } |
| |
| sub filter { |
| my @filtered; |
| foreach (@_) { push @filtered, $_ unless $disabled{$_}; } |
| return @filtered; |
| } |
| |
| # |
| # Helper functions for generating the arch specific RTCD files |
| # |
| sub common_top() { |
| my $include_guard = uc($opts{sym})."_H_"; |
| print <<EOF; |
| #ifndef ${include_guard} |
| #define ${include_guard} |
| |
| #ifdef RTCD_C |
| #define RTCD_EXTERN |
| #else |
| #define RTCD_EXTERN extern |
| #endif |
| |
| EOF |
| |
| process_forward_decls(); |
| print <<EOF; |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| EOF |
| declare_function_pointers("c", @ALL_ARCHS); |
| |
| print <<EOF; |
| void $opts{sym}(void); |
| |
| EOF |
| } |
| |
| sub common_bottom() { |
| print <<EOF; |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif |
| EOF |
| } |
| |
| sub x86() { |
| determine_indirection("c", @ALL_ARCHS); |
| |
| # Assign the helper variable for each enabled extension |
| foreach my $opt (@ALL_ARCHS) { |
| my $opt_uc = uc $opt; |
| eval "\$have_${opt}=\"flags & HAS_${opt_uc}\""; |
| } |
| |
| common_top; |
| print <<EOF; |
| #ifdef RTCD_C |
| #include "vpx_ports/x86.h" |
| static void setup_rtcd_internal(void) |
| { |
| int flags = x86_simd_caps(); |
| |
| (void)flags; |
| |
| EOF |
| |
| set_function_pointers("c", @ALL_ARCHS); |
| |
| print <<EOF; |
| } |
| #endif |
| EOF |
| common_bottom; |
| } |
| |
| sub arm() { |
| determine_indirection("c", @ALL_ARCHS); |
| |
| # Assign the helper variable for each enabled extension |
| foreach my $opt (@ALL_ARCHS) { |
| my $opt_uc = uc $opt; |
| # Enable neon assembly based on HAVE_NEON logic instead of adding new |
| # HAVE_NEON_ASM logic |
| if ($opt eq 'neon_asm') { $opt_uc = 'NEON' } |
| eval "\$have_${opt}=\"flags & HAS_${opt_uc}\""; |
| } |
| |
| common_top; |
| print <<EOF; |
| #include "vpx_config.h" |
| |
| #ifdef RTCD_C |
| #include "vpx_ports/arm.h" |
| static void setup_rtcd_internal(void) |
| { |
| int flags = arm_cpu_caps(); |
| |
| (void)flags; |
| |
| EOF |
| |
| set_function_pointers("c", @ALL_ARCHS); |
| |
| print <<EOF; |
| } |
| #endif |
| EOF |
| common_bottom; |
| } |
| |
| sub mips() { |
| determine_indirection("c", @ALL_ARCHS); |
| common_top; |
| |
| print <<EOF; |
| #include "vpx_config.h" |
| |
| #ifdef RTCD_C |
| static void setup_rtcd_internal(void) |
| { |
| EOF |
| |
| set_function_pointers("c", @ALL_ARCHS); |
| |
| print <<EOF; |
| #if HAVE_DSPR2 |
| void vpx_dsputil_static_init(); |
| #if CONFIG_VP8 |
| void dsputil_static_init(); |
| #endif |
| |
| vpx_dsputil_static_init(); |
| #if CONFIG_VP8 |
| dsputil_static_init(); |
| #endif |
| #endif |
| } |
| #endif |
| EOF |
| common_bottom; |
| } |
| |
| sub unoptimized() { |
| determine_indirection "c"; |
| common_top; |
| print <<EOF; |
| #include "vpx_config.h" |
| |
| #ifdef RTCD_C |
| static void setup_rtcd_internal(void) |
| { |
| EOF |
| |
| set_function_pointers "c"; |
| |
| print <<EOF; |
| } |
| #endif |
| EOF |
| common_bottom; |
| } |
| |
| # |
| # Main Driver |
| # |
| |
| &require("c"); |
| if ($opts{arch} eq 'x86') { |
| @ALL_ARCHS = filter(qw/mmx sse sse2 sse3 ssse3 sse4_1 avx avx2/); |
| x86; |
| } elsif ($opts{arch} eq 'x86_64') { |
| @ALL_ARCHS = filter(qw/mmx sse sse2 sse3 ssse3 sse4_1 avx avx2/); |
| @REQUIRES = filter(keys %required ? keys %required : qw/mmx sse sse2/); |
| &require(@REQUIRES); |
| x86; |
| } elsif ($opts{arch} eq 'mips32' || $opts{arch} eq 'mips64') { |
| @ALL_ARCHS = filter("$opts{arch}"); |
| open CONFIG_FILE, $opts{config} or |
| die "Error opening config file '$opts{config}': $!\n"; |
| while (<CONFIG_FILE>) { |
| if (/HAVE_DSPR2=yes/) { |
| @ALL_ARCHS = filter("$opts{arch}", qw/dspr2/); |
| last; |
| } |
| if (/HAVE_MSA=yes/) { |
| @ALL_ARCHS = filter("$opts{arch}", qw/msa/); |
| last; |
| } |
| } |
| close CONFIG_FILE; |
| mips; |
| } elsif ($opts{arch} eq 'armv6') { |
| @ALL_ARCHS = filter(qw/media/); |
| arm; |
| } elsif ($opts{arch} =~ /armv7\w?/) { |
| @ALL_ARCHS = filter(qw/media neon_asm neon/); |
| @REQUIRES = filter(keys %required ? keys %required : qw/media/); |
| &require(@REQUIRES); |
| arm; |
| } elsif ($opts{arch} eq 'armv8' || $opts{arch} eq 'arm64' ) { |
| @ALL_ARCHS = filter(qw/neon/); |
| arm; |
| } else { |
| unoptimized; |
| } |
| |
| __END__ |
| |
| =head1 NAME |
| |
| rtcd - |
| |
| =head1 SYNOPSIS |
| |
| Usage: rtcd.pl [options] FILE |
| |
| See 'perldoc rtcd.pl' for more details. |
| |
| =head1 DESCRIPTION |
| |
| Reads the Run Time CPU Detections definitions from FILE and generates a |
| C header file on stdout. |
| |
| =head1 OPTIONS |
| |
| Options: |
| --arch=ARCH Architecture to generate defs for (required) |
| --disable-EXT Disable support for EXT extensions |
| --require-EXT Require support for EXT extensions |
| --sym=SYMBOL Unique symbol to use for RTCD initialization function |
| --config=FILE File with CONFIG_FOO=yes lines to parse |
