diff foosdk/sdk/pfc/cpuid.cpp @ 1:20d02a178406 default tip

*: check in everything else yay
author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/pfc/cpuid.cpp	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,73 @@
+#include "pfc-lite.h"
+#include "cpuid.h"
+
+
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
+
+#if PFC_HAVE_CPUID
+namespace pfc {
+
+	bool query_cpu_feature_set(unsigned p_value) {
+
+#ifdef __AVX__
+		// AVX implies all supported values are set
+		return true;
+#else
+
+#if _M_IX86_FP >= 2 || defined(_M_X64)
+		// don't bother checking for SSE/SSE2 if compiled to use them
+		p_value &= ~(CPU_HAVE_SSE | CPU_HAVE_SSE2);
+		if (p_value == 0) return true;
+#endif
+
+#ifdef _MSC_VER
+		__try {
+#endif
+			if (p_value & (CPU_HAVE_SSE | CPU_HAVE_SSE2 | CPU_HAVE_SSE3 | CPU_HAVE_SSSE3 | CPU_HAVE_SSE41 | CPU_HAVE_SSE42 | CPU_HAVE_AVX)) {
+				int buffer[4];
+				__cpuid(buffer,1);
+				if (p_value & CPU_HAVE_SSE) {
+					if ((buffer[3]&(1<<25)) == 0) return false;
+				}
+				if (p_value & CPU_HAVE_SSE2) {
+					if ((buffer[3]&(1<<26)) == 0) return false;
+				}
+				if (p_value & CPU_HAVE_SSE3) {
+					if ((buffer[2]&(1<<0)) == 0) return false;
+				}
+				if (p_value & CPU_HAVE_SSSE3) {
+					if ((buffer[2]&(1<<9)) == 0) return false;
+				}
+				if (p_value & CPU_HAVE_SSE41) {
+					if ((buffer[2]&(1<<19)) == 0) return false;
+				}
+				if (p_value & CPU_HAVE_SSE42) {
+					if ((buffer[2]&(1<<20)) == 0) return false;
+				}
+				if (p_value & CPU_HAVE_AVX) {
+					if ((buffer[2] & (1 << 28)) == 0) return false;
+				}
+			}
+			return true;
+#ifdef _MSC_VER
+		} __except(1) {
+			return false;
+		}
+#endif
+#endif
+	}
+}
+
+#endif
+
+namespace pfc {
+	const char* cpuArch() {
+#ifdef PFC_CPU_ARCH
+		return PFC_CPU_ARCH;
+#else
+		return "Unknown";
+#endif
+	}
+}