Initial macOS port bringup (#52)

src/Common/unix/platform.cpp

@@ -0,0 +1,23 @@
+#include <stdint.h>
+#include <time.h>
+
+uint32_t GetTickCount()
+{
+        struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+        return (1000 * ts.tv_sec + ts.tv_nsec / 1000000);
+}
+
+#include <cpuid.h>
+
+void (__cpuid)(int __cpuVal[4], unsigned int __leaf)
+{
+	__cpuid(__cpuVal[0], __cpuVal[1], __cpuVal[2], __cpuVal[3], __leaf);
+}
+#undef __cpuid
+
+void __cpuidex (int __cpuid_info[4], int __leaf, int __subleaf)
+{
+  __cpuid_count (__leaf, __subleaf, __cpuid_info[0], __cpuid_info[1],
+		 __cpuid_info[2], __cpuid_info[3]);
+}

src/Common/unix/platform.h

@@ -0,0 +1,93 @@
+#include <shared_mutex>
+
+class SlimRWLock
+{
+public:
+	void LockRead()
+	{
+		m_sm.lock_shared();
+	}
+
+	void UnlockRead()
+	{
+		m_sm.unlock_shared();
+	}
+
+	void LockWrite()
+	{
+		m_sm.lock();
+	}
+
+	void UnlockWrite()
+	{
+		m_sm.unlock();
+	}
+
+private:
+	std::shared_mutex m_sm;
+};
+
+inline uint32_t GetExceptionError() 
+{
+    return errno;
+}
+
+#undef False
+#undef True
+#undef None
+#undef Bool
+#undef Status
+#undef Success
+#undef ClientMessage
+
+// cpu id (somewhat hacky, reorganize later)
+void (__cpuid)(int __cpuVal[4], unsigned int __leaf);
+void __cpuidex (int __cpuid_info[4], int __leaf, int __subleaf);
+
+// placeholder
+uint32_t GetTickCount();
+
+// strcpy_s and strcat_s implementations
+template<size_t N> 
+void strcpy_s(char (&dst)[N], const char* src)  
+{
+	if(N == 0)
+		return;
+	char* dstP = dst;
+	const char* end = src + N - 1;
+	while(src < end)
+	{
+		char c = *src;
+		*dstP = c;
+		if(c == '\0')
+			return;
+		dstP++;
+		src++;
+		c++;
+	}
+	*dstP = '\0';
+	return;
+}
+
+template<size_t N> 
+void strcat_s(char (&dst)[N], const char* src)  
+{
+	if(N == 0)
+		return;
+	char* dstP = dst;
+	const char* end = dstP + N - 1;
+	while(dstP < end && *dstP != '\0')
+		dstP++;
+	while(dstP < end)
+	{
+		char c = *src;
+		*dstP = c;
+		if(c == '\0')
+			return;
+		dstP++;
+		src++;
+		c++;
+	}
+	*dstP = '\0';
+	return;
+}