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-rwxr-xr-xchromium/third_party/libvpx/source/libvpx/build/make/rtcd.pl420
1 files changed, 420 insertions, 0 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/build/make/rtcd.pl b/chromium/third_party/libvpx/source/libvpx/build/make/rtcd.pl
new file mode 100755
index 00000000000..f5f59b14655
--- /dev/null
+++ b/chromium/third_party/libvpx/source/libvpx/build/make/rtcd.pl
@@ -0,0 +1,420 @@
+#!/usr/bin/env perl
+
+no strict 'refs';
+use warnings;
+use Getopt::Long;
+Getopt::Long::Configure("auto_help");
+
+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_/;
+ 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
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+EOF
+
+process_forward_decls();
+print "\n";
+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_${opt_uc}\"";
+ }
+
+ common_top;
+ print <<EOF;
+#include "vpx_config.h"
+
+#ifdef RTCD_C
+#include "vpx_ports/arm.h"
+static void setup_rtcd_internal(void)
+{
+ int flags = arm_cpu_caps();
+
+ (void)flags;
+
+EOF
+
+ set_function_pointers("c", @ALL_ARCHS);
+
+ print <<EOF;
+}
+#endif
+EOF
+ common_bottom;
+}
+
+sub mips() {
+ determine_indirection("c", @ALL_ARCHS);
+ common_top;
+
+ print <<EOF;
+#include "vpx_config.h"
+
+#ifdef RTCD_C
+static void setup_rtcd_internal(void)
+{
+EOF
+
+ set_function_pointers("c", @ALL_ARCHS);
+
+ print <<EOF;
+#if HAVE_DSPR2
+#if CONFIG_VP8
+void dsputil_static_init();
+dsputil_static_init();
+#endif
+#if CONFIG_VP9
+void vp9_dsputil_static_init();
+vp9_dsputil_static_init();
+#endif
+#endif
+}
+#endif
+EOF
+ common_bottom;
+}
+
+sub unoptimized() {
+ determine_indirection "c";
+ common_top;
+ print <<EOF;
+#include "vpx_config.h"
+
+#ifdef RTCD_C
+static void setup_rtcd_internal(void)
+{
+EOF
+
+ set_function_pointers "c";
+
+ print <<EOF;
+}
+#endif
+EOF
+ common_bottom;
+}
+
+#
+# Main Driver
+#
+
+&require("c");
+if ($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') {
+ @ALL_ARCHS = filter(qw/mips32/);
+ open CONFIG_FILE, $opts{config} or
+ die "Error opening config file '$opts{config}': $!\n";
+ while (<CONFIG_FILE>) {
+ if (/HAVE_DSPR2=yes/) {
+ @ALL_ARCHS = filter(qw/mips32 dspr2/);
+ last;
+ }
+ }
+ close CONFIG_FILE;
+ mips;
+} elsif ($opts{arch} eq 'armv5te') {
+ @ALL_ARCHS = filter(qw/edsp/);
+ arm;
+} elsif ($opts{arch} eq 'armv6') {
+ @ALL_ARCHS = filter(qw/edsp media/);
+ arm;
+} elsif ($opts{arch} eq 'armv7') {
+ @ALL_ARCHS = filter(qw/edsp media neon_asm neon/);
+ arm;
+} elsif ($opts{arch} eq 'armv8') {
+ @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
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 18:40:19 +0000