public static unsafe void DumpElfInfo()
{
var secLength = OriginalKernelElf.SectionHeaderCount;
KernelMessage.WriteLine("Found {0} Kernel Sections:", secLength);
for (uint i = 0; i < secLength; i++)
{
var sec = OriginalKernelElf.GetSectionHeader(i);
var name = OriginalKernelElf.GeSectionName(sec);
var sb = new StringBuffer(name);
KernelMessage.WriteLine(sb);
}
}
private static unsafe Process StartProcessFromElf(ElfSections elf, string path, uint argumentBufferSize = 0)
{
var proc = CreateEmptyProcess(new ProcessCreateOptions()
{
User = true
});
KernelMessage.WriteLine("Create proc: {0}, PID: {1}", path, proc.ProcessID);
proc.Path = path;
proc.PageTable = PageTable.CreateInstance();
var allocator = new UserInitialPageAllocator()
{
DebugName = "UserInitial"
};
allocator.Setup(new MemoryRegion(500 * 1024 * 1024, 60 * 1024 * 1014), AddressSpaceKind.Virtual);
proc.UserPageAllocator = allocator;
// Setup User PageTable
proc.PageTableAllocAddr = VirtualPageManager.AllocatePages(
KMath.DivCeil(proc.PageTable.InitalMemoryAllocationSize, 4096),
new AllocatePageOptions {
Pool = PageAllocationPool.Identity
});
PageTable.KernelTable.SetWritable(proc.PageTableAllocAddr, proc.PageTable.InitalMemoryAllocationSize);
proc.PageTable.UserProcSetup(proc.PageTableAllocAddr);
proc.PageTable.Map(proc.PageTableAllocAddr, proc.PageTableAllocAddr, proc.PageTable.InitalMemoryAllocationSize);
proc.PageTable.MapCopy(PageTable.KernelTable, BootInfoMemoryType.KernelTextSegment);
proc.PageTable.SetExecutable(BootInfoMemoryType.KernelTextSegment);
proc.PageTable.MapCopy(PageTable.KernelTable, Address.InterruptControlBlock, 4096);
proc.PageTable.MapCopy(PageTable.KernelTable, KernelMemoryMapManager.Header->Used.GetMap(BootInfoMemoryType.GDT));
proc.PageTable.MapCopy(PageTable.KernelTable, KernelMemoryMapManager.Header->Used.GetMap(BootInfoMemoryType.IDT));
proc.PageTable.MapCopy(PageTable.KernelTable, KernelMemoryMapManager.Header->Used.GetMap(BootInfoMemoryType.TSS));
var tmpKernelElfHeaders = SetupElfHeader(proc, elf);
// Setup ELF Sections
for (uint i = 0; i < elf.SectionHeaderCount; i++)
{
var section = elf.GetSectionHeader(i);
var name = elf.GeSectionName(section);
var size = section->Size;
var virtAddr = section->Addr;
var srcAddr = elf.GetSectionPhysAddr(section);
if (size == 0)
{
continue;
}
if (virtAddr == Addr.Zero)
{
var mem = allocator.AllocatePagesAddr(KMath.DivCeil(size, 4096));
tmpKernelElfHeaders[i].Addr = mem;
virtAddr = mem;
}
var sb = new StringBuffer();
sb.Append("Map section ");
sb.Append(name);
sb.Append(" virt={0:X8} src={1:X8} size={2:X8}", virtAddr, srcAddr, size);
KernelMessage.WriteLine(sb);
//MemoryOperation.Copy4(elf.GetSectionPhysAddr(section), section->Addr, section->Size);
// Map the Sections
proc.PageTable.MapCopy(PageTable.KernelTable, srcAddr, virtAddr, size);
if (name->Equals(".text"))
{
proc.PageTable.SetExecutable(virtAddr, size);
}
}
KernelMessage.WriteLine("proc sections are ready");
// Detect Thread-Main
var entryPoint = GetEntryPointFromElf(elf);
KernelMessage.WriteLine("EntryPoint: {0:X8}", entryPoint);
var mainThread = Scheduler.CreateThread(proc, new ThreadStartOptions(entryPoint)
{
ArgumentBufferSize = argumentBufferSize,
AllowUserModeIOPort = true,
DebugName = "UserProcMainThread",
});
KernelMessage.WriteLine("Starting {0} on Thread {1}", path, mainThread.ThreadID);
proc.Start();
return(proc);
}