Add package sys/cpu - implements processor feature detection

core/sys/cpu/cpu.odin

@@ -0,0 +1,35 @@
+package sys_cpu
+
+#assert(ODIN_USE_LLVM_API);
+
+Cache_Line_Pad :: struct {_: [_cache_line_size]byte};
+
+initialized: bool;
+
+x86: struct {
+	_: Cache_Line_Pad,
+	has_aes:       bool, // AES hardware implementation (AES NI)
+	has_adx:       bool, // Multi-precision add-carry instruction extensions
+	has_avx:       bool, // Advanced vector extension
+	has_avx2:      bool, // Advanced vector extension 2
+	has_bmi1:      bool, // Bit manipulation instruction set 1
+	has_bmi2:      bool, // Bit manipulation instruction set 2
+	has_erms:      bool, // Enhanced REP for MOVSB and STOSB
+	has_fma:       bool, // Fused-multiply-add instructions
+	has_os_xsave:  bool, // OS supports XSAVE/XRESTOR for saving/restoring XMM registers.
+	has_pclmulqdq: bool, // PCLMULQDQ instruction - most often used for AES-GCM
+	has_popcnt:    bool, // Hamming weight instruction POPCNT.
+	has_rdrand:    bool, // RDRAND instruction (on-chip random number generator)
+	has_rdseed:    bool, // RDSEED instruction (on-chip random number generator)
+	has_sse2:      bool, // Streaming SIMD extension 2 (always available on amd64)
+	has_sse3:      bool, // Streaming SIMD extension 3
+	has_ssse3:     bool, // Supplemental streaming SIMD extension 3
+	has_sse41:     bool, // Streaming SIMD extension 4 and 4.1
+	has_sse42:     bool, // Streaming SIMD extension 4 and 4.2
+	_: Cache_Line_Pad,
+};
+
+
+init :: proc() {
+	_init();
+}