Merged features/mp-sched -r8915:9335 into the trunk. The trunk now

[debian/gnuradio] / gnuradio-core / src / lib / filter / gr_cpu_x86.cc

diff --git a/gnuradio-core/src/lib/filter/gr_cpu_x86.cc b/gnuradio-core/src/lib/filter/gr_cpu_x86.cc
new file mode 100644 (file)
index 0000000..a13a69c
--- /dev/null
+++ b/gnuradio-core/src/lib/filter/gr_cpu_x86.cc
@@ -0,0 +1,113 @@
+/* -*- 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;
+}