init: raw cpuid/rdtsc access via ctypes

tests/test_rawcpu.py

@@ -0,0 +1,32 @@
+import rawcpu
+
+
+def test_vendor_not_empty():
+    assert len(rawcpu.vendor()) > 0
+
+
+def test_brand_not_empty():
+    assert len(rawcpu.brand()) > 0
+
+
+def test_rdtsc_moves_forward():
+    a = rawcpu.rdtsc()
+    b = rawcpu.rdtsc()
+    assert b >= a
+
+
+def test_cpuid_leaf_zero_reports_max_leaf():
+    eax, _ebx, _ecx, _edx = rawcpu.cpuid(0)
+    assert eax >= 1
+
+
+def test_has_feature_sse2_true_on_any_modern_x86():
+    assert rawcpu.has_feature("sse2") is True
+
+
+def test_has_feature_unknown_raises():
+    try:
+        rawcpu.has_feature("not-a-real-feature")
+        assert False, "expected ValueError"
+    except ValueError:
+        pass