1 files changed, 60 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/modules/cpuid.c b/contrib/syslinux-4.02/com32/modules/cpuid.c
new file mode 100644
index 0000000..78cb3f5
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/modules/cpuid.c
@@ -0,0 +1,60 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2010 Intel Corporation; author: H. Peter Anvin
+ *
+ *   This program 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, Inc., 51 Franklin St, Fifth Floor,
+ *   Boston MA 02110-1301, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/cpu.h>
+#include <console.h>
+#include <com32.h>
+
+static void dump_reg(const char *name, uint32_t val)
+{
+    int i;
+
+    printf("%-3s : %10u 0x%08x ", name, val, val);
+
+    for (i = 3; i >= 0; i--) {
+	uint8_t c = val >> (i*8);
+	putchar((c >= ' ' && c <= '~') ? c : '.');
+    }
+    putchar('\n');
+}
+
+int main(int argc, char *argv[])
+{
+    uint32_t leaf, counter;
+    uint32_t eax, ebx, ecx, edx;
+
+    openconsole(&dev_null_r, &dev_stdcon_w);
+
+    if (argc < 2 || argc > 4) {
+	printf("Usage: %s leaf [counter]\n", argv[0]);
+	exit(1);
+    }
+
+    leaf = strtoul(argv[1], NULL, 0);
+    counter = (argc > 2) ? strtoul(argv[2], NULL, 0) : 0;
+
+    if (!cpu_has_eflag(EFLAGS_ID)) {
+	printf("The CPUID instruction is not supported\n");
+	exit(1);
+    }
+
+    cpuid_count(leaf, counter, &eax, &ebx, &ecx, &edx);
+
+    dump_reg("eax", eax);
+    dump_reg("ebx", ebx);
+    dump_reg("ecx", ecx);
+    dump_reg("edx", edx);
+
+    return 0;
+}