1 files changed, 33 insertions, 0 deletions
diff --git a/cpu_mode_x86.c b/cpu_mode_x86.c
new file mode 100644
index 0000000..322018e
--- /dev/null
+++ b/cpu_mode_x86.c
@@ -0,0 +1,33 @@
+/* Determine CPU support for SIMD
+ * Copyright 2004 Phil Karn, KA9Q
+ */
+#include <stdio.h>
+#include "fec.h"
+
+/* Various SIMD instruction set names */
+char *Cpu_modes[] = {"Unknown","Portable C","x86 Multi Media Extensions (MMX)",
+		   "x86 Streaming SIMD Extensions (SSE)",
+		   "x86 Streaming SIMD Extensions 2 (SSE2)",
+		   "PowerPC G4/G5 Altivec/Velocity Engine"};
+
+enum cpu_mode Cpu_mode;
+
+void find_cpu_mode(void){
+
+  int f;
+  if(Cpu_mode != UNKNOWN)
+    return;
+
+  /* Figure out what kind of CPU we have */
+  f = cpu_features();
+  if(f & (1<<26)){ /* SSE2 is present */
+    Cpu_mode = SSE2;
+  } else if(f & (1<<25)){ /* SSE is present */
+    Cpu_mode = SSE;
+  } else if(f & (1<<23)){ /* MMX is present */
+    Cpu_mode = MMX;
+  } else { /* No SIMD at all */
+    Cpu_mode = PORT;
+  }
+  fprintf(stderr,"SIMD CPU detect: %s\n",Cpu_modes[Cpu_mode]);
+}