extended windows support cpuFlags() (partially)

2017-10-15 11:49:19 +02:00
parent ba8743f3a6
commit 43bddba27d
4 changed files with 39 additions and 5 deletions
@@ -394,10 +394,30 @@ function cpuFlags(callback) {
    process.nextTick(() => {
      let result = '';
      if (_windows) {
-        if (callback) { callback(result) }
-        resolve(result);
+        exec(`reg query "HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0" /v FeatureSet`, function (error, stdout) {
+          if (!error) {
+            let flag_hex = stdout.split("0x").pop().trim();
+            let flag_bin_unpadded = parseInt(flag_hex, 16).toString(2);
+            let flag_bin = "0".repeat(32 - flag_bin_unpadded.length) + flag_bin_unpadded;
+            // empty flags are the reserved fields in the CPUID feature bit list
+            // as found on wikipedia:
+            // https://en.wikipedia.org/wiki/CPUID
+            let all_flags = [
+              "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic",
+              "", "sep", "mtrr", "pge", "mca", "cmov", "pat", "pse-36", "psn", "clfsh",
+              "", "ds", "acpi", "mmx", "fxsr", "sse", "sse2", "ss", "htt", "tm", "ia64", "pbe"
+            ]
+            for (let f = 0; f < all_flags.length; f++) {
+              if (flag_bin[f] === "1" && all_flags[f] !== "") {
+                result += " " + all_flags[f];
+              }
+            }
+            result = result.trim();
+          }
+          if (callback) { callback(result) }
+          resolve(result);
+        });
      }
-
      if (_linux) {
        exec("lscpu", function (error, stdout) {
          if (!error) {