--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <gr_cpu.h>
+
+/*
+ * execute CPUID instruction, return EAX, EBX, ECX and EDX values in result
+ */
+extern "C" {
+void cpuid_x86 (unsigned int op, unsigned int result[4]);
+};
+
+/*
+ * CPUID functions returning a single datum
+ */
+
+static inline unsigned int cpuid_eax(unsigned int op)
+{
+ unsigned int regs[4];
+ cpuid_x86 (op, regs);
+ return regs[0];
+}
+
+static inline unsigned int cpuid_ebx(unsigned int op)
+{
+ unsigned int regs[4];
+ cpuid_x86 (op, regs);
+ return regs[1];
+}
+
+static inline unsigned int cpuid_ecx(unsigned int op)
+{
+ unsigned int regs[4];
+ cpuid_x86 (op, regs);
+ return regs[2];
+}
+
+static inline unsigned int cpuid_edx(unsigned int op)
+{
+ unsigned int regs[4];
+ cpuid_x86 (op, regs);
+ return regs[3];
+}
+
+// ----------------------------------------------------------------
+
+bool
+gr_cpu::has_mmx ()
+{
+ unsigned int edx = cpuid_edx (1); // standard features
+ return (edx & (1 << 23)) != 0;
+}
+
+bool
+gr_cpu::has_sse ()
+{
+ unsigned int edx = cpuid_edx (1); // standard features
+ return (edx & (1 << 25)) != 0;
+}
+
+bool
+gr_cpu::has_sse2 ()
+{
+ unsigned int edx = cpuid_edx (1); // standard features
+ return (edx & (1 << 26)) != 0;
+}
+
+bool
+gr_cpu::has_3dnow ()
+{
+ unsigned int extended_fct_count = cpuid_eax (0x80000000);
+ if (extended_fct_count < 0x80000001)
+ return false;
+
+ unsigned int extended_features = cpuid_edx (0x80000001);
+ return (extended_features & (1 << 31)) != 0;
+}
+
+bool
+gr_cpu::has_3dnowext ()
+{
+ unsigned int extended_fct_count = cpuid_eax (0x80000000);
+ if (extended_fct_count < 0x80000001)
+ return false;
+
+ unsigned int extended_features = cpuid_edx (0x80000001);
+ return (extended_features & (1 << 30)) != 0;
+}
+
+bool
+gr_cpu::has_altivec ()
+{
+ return false;
+}