Split kernel32 into separate files (part 1)

dll/kernel32/sysinfoapi.cpp

@@ -0,0 +1,58 @@
+#include "common.h"
+#include "kernel32.h"
+
+#include <cstring>
+
+namespace {
+constexpr WORD PROCESSOR_ARCHITECTURE_INTEL = 0;
+constexpr DWORD PROCESSOR_INTEL_PENTIUM = 586;
+
+DWORD_PTR computeSystemProcessorMask(unsigned int cpuCount) {
+	const auto maskWidth = static_cast<unsigned int>(sizeof(DWORD_PTR) * 8);
+	if (cpuCount >= maskWidth) {
+		return static_cast<DWORD_PTR>(~static_cast<DWORD_PTR>(0));
+	}
+	DWORD_PTR mask = (static_cast<DWORD_PTR>(1) << cpuCount) - 1;
+	return mask == 0 ? 1 : mask;
+}
+} // namespace
+
+namespace kernel32 {
+
+void WIN_FUNC GetSystemInfo(LPSYSTEM_INFO lpSystemInfo) {
+	DEBUG_LOG("GetSystemInfo(%p)\n", lpSystemInfo);
+	if (!lpSystemInfo) {
+		return;
+	}
+
+	std::memset(lpSystemInfo, 0, sizeof(*lpSystemInfo));
+	lpSystemInfo->wProcessorArchitecture = PROCESSOR_ARCHITECTURE_INTEL;
+	lpSystemInfo->dwOemId = lpSystemInfo->wProcessorArchitecture;
+	lpSystemInfo->dwProcessorType = PROCESSOR_INTEL_PENTIUM;
+	lpSystemInfo->wProcessorLevel = 6; // Pentium
+
+	long pageSize = sysconf(_SC_PAGESIZE);
+	if (pageSize <= 0) {
+		pageSize = 4096;
+	}
+	lpSystemInfo->dwPageSize = static_cast<DWORD>(pageSize);
+
+	lpSystemInfo->lpMinimumApplicationAddress = reinterpret_cast<LPVOID>(0x00010000);
+	if (sizeof(void *) == 4) {
+		lpSystemInfo->lpMaximumApplicationAddress = reinterpret_cast<LPVOID>(0x7FFEFFFF);
+	} else {
+		lpSystemInfo->lpMaximumApplicationAddress = reinterpret_cast<LPVOID>(0x00007FFFFFFEFFFFull);
+	}
+
+	unsigned int cpuCount = 1;
+	long reported = sysconf(_SC_NPROCESSORS_ONLN);
+	if (reported > 0) {
+		cpuCount = static_cast<unsigned int>(reported);
+	}
+	lpSystemInfo->dwNumberOfProcessors = cpuCount;
+	lpSystemInfo->dwActiveProcessorMask = computeSystemProcessorMask(cpuCount);
+
+	lpSystemInfo->dwAllocationGranularity = 0x10000;
+}
+
+} // namespace kernel32