[haiku-commits] haiku: hrev44217 - src/tools
- From: kallisti5@xxxxxxxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Fri, 1 Jun 2012 18:02:24 +0200 (CEST)
hrev44217 adds 1 changeset to branch 'master'
old head: c84fd0f0fecfe6a153d57e7e9aa67206712b1b81
new head: d995d3c634421f74061bcd6225e3ee9fb25f7194
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d995d3c: intelcpuid: A small tool for OS.h
* Takes an Intel CPUID and converts it to a number for OS.h
[ Alexander von Gluck IV <kallisti5@xxxxxxxxxxx> ]
----------------------------------------------------------------------------
Revision: hrev44217
Commit: d995d3c634421f74061bcd6225e3ee9fb25f7194
URL: http://cgit.haiku-os.org/haiku/commit/?id=d995d3c
Author: Alexander von Gluck IV <kallisti5@xxxxxxxxxxx>
Date: Fri Jun 1 16:01:29 2012 UTC
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1 file changed, 96 insertions(+)
src/tools/intelcpuid.c | 96 ++++++++++++++++++++++++++++++++++++++++++++
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diff --git a/src/tools/intelcpuid.c b/src/tools/intelcpuid.c
new file mode 100644
index 0000000..44e3e4c
--- /dev/null
+++ b/src/tools/intelcpuid.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2012 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ * Alexander von Gluck, kallisti5@xxxxxxxxxxx
+ */
+
+/*
+ * Pass an Intel CPUID in hex, and get out a CPUID for OS.h
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+
+#define INTEL_VENDOR 0x100000
+
+#define EXT_FAMILY_MASK 0xF00000
+#define EXT_MODEL_MASK 0x0F0000
+#define FAMILY_MASK 0x000F00
+#define MODEL_MASK 0x0000F0
+#define STEPPING_MASK 0x00000F
+
+
+// Converts a hexadecimal string to integer
+static int xtoi(const char* xs, unsigned int* result)
+{
+ size_t szlen = strlen(xs);
+ int i, xv, fact;
+
+ if (szlen > 0) {
+ // Converting more than 32bit hexadecimal value?
+ if (szlen>8) return 2; // exit
+
+ // Begin conversion here
+ *result = 0;
+ fact = 1;
+
+ // Run until no more character to convert
+ for (i = szlen - 1; i>=0 ;i--) {
+ if (isxdigit(*(xs+i))) {
+ if (*(xs+i)>=97) {
+ xv = ( *(xs+i) - 97) + 10;
+ } else if ( *(xs+i) >= 65) {
+ xv = (*(xs+i) - 65) + 10;
+ } else {
+ xv = *(xs+i) - 48;
+ }
+ *result += (xv * fact);
+ fact *= 16;
+ } else {
+ // Conversion was abnormally terminated
+ // by non hexadecimal digit, hence
+ // returning only the converted with
+ // an error value 4 (illegal hex character)
+ return 4;
+ }
+ }
+ }
+
+ // Nothing to convert
+ return 1;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ if (argc != 2) {
+ printf("Provide the Intel cpuid in hex, and you will get how we
id it\n");
+ printf("usage: intelcpuid <cpuid_hex>\n");
+ return 1;
+ }
+
+ unsigned int cpuid;
+ xtoi(argv[1], &cpuid);
+
+ printf("cpuid: 0x%X\n", cpuid);
+
+ unsigned int extFam = (cpuid & EXT_FAMILY_MASK) >> 20;
+ unsigned int extMod = (cpuid & EXT_MODEL_MASK) >> 16;
+ unsigned int family = (cpuid & FAMILY_MASK) >> 8;
+ unsigned int model = (cpuid & MODEL_MASK) >> 4;
+ unsigned int stepping = (cpuid & STEPPING_MASK);
+
+ // Haiku INTEL cpuid format: VVEFEM
+ unsigned int intelHaiku = INTEL_VENDOR + ((extFam & 0xF) << 12)
+ + (family << 8) + (extMod << 4) + model;
+
+ printf("Haiku CPUID: 0x%lX\n", intelHaiku);
+
+ return 0;
+}
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