From: Martin Mares <mj@ucw.cz>
Date: Mon, 11 Sep 2006 19:04:48 +0000 (+0200)
Subject: Added automatic configuration for Prescott, Nocona, Pentium-M and amd64 CPU's.
X-Git-Tag: holmes-import~555^2~3
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=c982ab2e7563eb425bb198a8aa051d46fcb2895c;p=libucw.git

Added automatic configuration for Prescott, Nocona, Pentium-M and amd64 CPU's.
---

diff --git a/lib/autoconf.cfg b/lib/autoconf.cfg
index 668c83ea..39317a25 100644
--- a/lib/autoconf.cfg
+++ b/lib/autoconf.cfg
@@ -48,6 +48,22 @@ Test("ARCH", "Checking for machine architecture", sub {
 	}
 });
 
+sub parse_cpuinfo() {
+	IsSet("CONFIG_EXACT_CPU") && IsSet("CONFIG_LINUX") && open X, "/proc/cpuinfo" || undef;
+	my %pc = ();
+	while (<X>) {
+		chomp;
+		/^$/ && last;
+		/^([^\t]+)\t+:\s*(.*)$/ and $pc{$1}=$2;
+	}
+	close X;
+
+	my $vendor = $pc{'vendor_id'} || "";
+	my $family = $pc{'cpu family'} || 0;
+	my $model  = $pc{'model'} || 0;
+	return ($vendor, $family, $model);
+}
+
 Test("CPU_ARCH", "Checking for CPU architecture", sub {
 	my $mach = Get("ARCH");
 	if ($mach eq "i386") {
@@ -58,19 +74,8 @@ Test("CPU_ARCH", "Checking for CPU architecture", sub {
 		Set("CPU_ALLOW_UNALIGNED");
 		Set("CPU_STRUCT_ALIGN" => 4);
 		my $arch = "";
-		if (IsSet("CONFIG_EXACT_CPU") && IsSet("CONFIG_LINUX") && open X, "/proc/cpuinfo") {
-			my %pc = ();
-			while (<X>) {
-				chomp;
-				/^$/ && last;
-				/^([^\t]+)\t+:\s*(.*)$/ and $pc{$1}=$2;
-			}
-			close X;
-
+		if (my ($vendor, $family, $model) = parse_cpuinfo()) {
 			# Try to understand CPU vendor, family and model [inspired by MPlayer's configure script]
-			my $vendor = $pc{'vendor_id'} || "";
-			my $family = $pc{'cpu family'} || 0;
-			my $model  = $pc{'model'} || 0;
 			if ($vendor eq "AuthenticAMD") {
 				if ($family >= 6) {
 					if ($model >= 31 && $gccver >= 3004) { $arch = "athlon64"; }
@@ -78,10 +83,13 @@ Test("CPU_ARCH", "Checking for CPU architecture", sub {
 					else { $arch = "athlon"; }
 				}
 			} elsif ($vendor eq "GenuineIntel") {
-				# We don't recognize Prescott and Nocona cores yet (gcc-3.4+)
-				if ($family >= 15 && $gccver >= 3003) { $arch = "pentium4"; }
-				elsif ($family >= 6 && $gccver >= 3003) {
-					if ($model >= 7) { $arch = "pentium3"; }
+				if ($family >= 15 && $gccver >= 3003) {
+					if ($model >= 4) { $arch = "nocona"; }
+					elsif ($model >= 3) { $arch = "prescott"; }
+					else { $arch = "pentium4"; }
+				} elsif ($family == 6 && $gccver >= 3003) {
+					if (($model == 9 || $model == 13) && $gccver >= 3004) { $arch = "pentium-m"; }
+					elsif ($model >= 7) { $arch = "pentium3"; }
 					elsif ($model >= 3) { $arch = "pentium2"; }
 				}
 			}
@@ -94,11 +102,7 @@ Test("CPU_ARCH", "Checking for CPU architecture", sub {
 					$arch = "i${family}86";
 				}
 			}
-			if ($arch ne "") {
-				Log "(using /proc/cpuinfo) ";
-			} else {
-				Log "(don't understand /proc/cpuinfo) ";
-			}
+			Log (($arch ne "") ? "(using /proc/cpuinfo) " : "(don't understand /proc/cpuinfo) ");
 		}
 		return $arch ? $arch : "i386";
 	} elsif ($mach eq "amd64") {
@@ -108,7 +112,16 @@ Test("CPU_ARCH", "Checking for CPU architecture", sub {
 		UnSet("CPU_BIG_ENDIAN");
 		Set("CPU_ALLOW_UNALIGNED");
 		Set("CPU_STRUCT_ALIGN" => 8);
-		return "x86-64";
+		if (my ($vendor, $family, $model) = parse_cpuinfo()) {
+			# In x86-64 world, the detection is somewhat easier so far...
+			if ($vendor eq "AuthenticAMD") {
+				$arch = "athlon64";
+			} elsif ($vendor eq "GenuineIntel") {
+				$arch = "nocona";
+			}
+			Log (($arch ne "") ? "(using /proc/cpuinfo) " : "(don't understand /proc/cpuinfo) ");
+		}
+		return $arch ? $arch : "x86-64";
 	} else {
 		return undef;
 	}