mirror of
https://github.com/Fennix-Project/Kernel.git
synced 2025-05-28 15:34:33 +00:00
510 lines
26 KiB
C++
510 lines
26 KiB
C++
#include <exec.hpp>
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#include <memory.hpp>
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#include <lock.hpp>
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#include <msexec.h>
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#include <cwalk.h>
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#include <elf.h>
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#include <abi.h>
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#include "../kernel.h"
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#include "../Fex.hpp"
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using namespace Tasking;
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namespace Execute
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{
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SpawnData Spawn(char *Path, const char **argv, const char **envp)
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{
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SpawnData ret = {.Status = ExStatus::Unknown,
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.Process = nullptr,
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.Thread = nullptr};
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FileSystem::FILE *ExFile = vfs->Open(Path);
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if (ExFile->Status == FileSystem::FileStatus::OK)
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{
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if (ExFile->Node->Flags == FileSystem::NodeFlags::FS_FILE)
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{
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BinaryType Type = GetBinaryType(Path);
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switch (Type)
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{
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case BinaryType::BinTypeFex:
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{
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#if defined(__amd64__)
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Fex *FexHdr = (Fex *)ExFile->Node->Address;
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if (FexHdr->Type == FexFormatType::FexFormatType_Executable)
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{
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const char *BaseName;
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cwk_path_get_basename(Path, &BaseName, nullptr);
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PCB *Process = TaskManager->CreateProcess(TaskManager->GetCurrentProcess(), BaseName, TaskTrustLevel::User);
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void *BaseImage = KernelAllocator.RequestPages(TO_PAGES(ExFile->Node->Length));
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memcpy(BaseImage, (void *)ExFile->Node->Address, ExFile->Node->Length);
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Memory::Virtual pva = Memory::Virtual(Process->PageTable);
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for (uint64_t i = 0; i < TO_PAGES(ExFile->Node->Length); i++)
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pva.Map((void *)((uint64_t)BaseImage + (i * PAGE_SIZE)), (void *)((uint64_t)BaseImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
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Vector<AuxiliaryVector> auxv; // TODO!
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TCB *Thread = TaskManager->CreateThread(Process,
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(IP)FexHdr->Pointer,
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argv, envp, auxv,
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(IPOffset)BaseImage,
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TaskArchitecture::x64,
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TaskCompatibility::Native);
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ret.Process = Process;
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ret.Thread = Thread;
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ret.Status = ExStatus::OK;
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#elif defined(__i386__)
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if (1)
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{
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#elif defined(__aarch64__)
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if (1)
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{
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#endif
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goto Exit;
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}
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ret.Status = ExStatus::InvalidFileHeader;
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goto Exit;
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}
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case BinaryType::BinTypeELF:
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{
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#if defined(__amd64__)
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const char *BaseName;
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cwk_path_get_basename(Path, &BaseName, nullptr);
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void *BaseImage = KernelAllocator.RequestPages(TO_PAGES(ExFile->Node->Length));
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memcpy(BaseImage, (void *)ExFile->Node->Address, ExFile->Node->Length);
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debug("Image Size: %#lx - %#lx (length: %ld)", BaseImage, (uint64_t)BaseImage + ExFile->Node->Length, ExFile->Node->Length);
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PCB *Process = TaskManager->CreateProcess(TaskManager->GetCurrentProcess(), BaseName, TaskTrustLevel::User, BaseImage);
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Memory::Virtual pva = Memory::Virtual(Process->PageTable);
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for (uint64_t i = 0; i < TO_PAGES(ExFile->Node->Length); i++)
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pva.Remap((void *)((uint64_t)BaseImage + (i * PAGE_SIZE)), (void *)((uint64_t)BaseImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
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Elf64_Ehdr *ELFHeader = (Elf64_Ehdr *)BaseImage;
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TaskArchitecture Arch = TaskArchitecture::x64;
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TaskCompatibility Comp = TaskCompatibility::Native;
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if (ELFHeader->e_machine == EM_386)
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Arch = TaskArchitecture::x32;
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else if (ELFHeader->e_machine == EM_AMD64)
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Arch = TaskArchitecture::x64;
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else if (ELFHeader->e_machine == EM_AARCH64)
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Arch = TaskArchitecture::ARM64;
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else
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Arch = TaskArchitecture::UnknownArchitecture;
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// TODO: Should I care about this?
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if (ELFHeader->e_ident[EI_CLASS] == ELFCLASS32)
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{
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if (ELFHeader->e_ident[EI_DATA] == ELFDATA2LSB)
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fixme("ELF32 LSB");
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else if (ELFHeader->e_ident[EI_DATA] == ELFDATA2MSB)
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fixme("ELF32 MSB");
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else
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fixme("ELF32 Unknown");
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}
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else if (ELFHeader->e_ident[EI_CLASS] == ELFCLASS64)
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{
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if (ELFHeader->e_ident[EI_DATA] == ELFDATA2LSB)
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fixme("ELF64 LSB");
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else if (ELFHeader->e_ident[EI_DATA] == ELFDATA2MSB)
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fixme("ELF64 MSB");
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else
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fixme("ELF64 Unknown");
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}
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else
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fixme("Unknown ELF");
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if (ELFHeader->e_type == ET_EXEC)
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{
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trace("Executable");
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Elf64_Phdr *ProgramHeader = (Elf64_Phdr *)(((char *)BaseImage) + ELFHeader->e_phoff);
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debug("p_paddr: %#lx | p_vaddr: %#lx | p_filesz: %#lx | p_memsz: %#lx | p_offset: %#lx", ProgramHeader->p_paddr, ProgramHeader->p_vaddr, ProgramHeader->p_filesz, ProgramHeader->p_memsz, ProgramHeader->p_offset);
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uintptr_t BaseAddress = UINTPTR_MAX;
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uint64_t ElfAppSize = 0;
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Elf64_Phdr ItrProgramHeader;
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for (Elf64_Half i = 0; i < ELFHeader->e_phnum; i++)
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{
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memcpy(&ItrProgramHeader, (uint8_t *)BaseImage + ELFHeader->e_phoff + ELFHeader->e_phentsize * i, sizeof(Elf64_Phdr));
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BaseAddress = MIN(BaseAddress, ItrProgramHeader.p_vaddr);
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}
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debug("BaseAddress %#lx", BaseAddress);
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for (Elf64_Half i = 0; i < ELFHeader->e_phnum; i++)
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{
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memcpy(&ItrProgramHeader, (uint8_t *)BaseImage + ELFHeader->e_phoff + ELFHeader->e_phentsize * i, sizeof(Elf64_Phdr));
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uintptr_t SegmentEnd;
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SegmentEnd = ItrProgramHeader.p_vaddr - BaseAddress + ItrProgramHeader.p_memsz;
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ElfAppSize = MAX(ElfAppSize, SegmentEnd);
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}
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debug("ElfAppSize %ld", ElfAppSize);
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uint8_t *MemoryImage = nullptr;
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// check for TEXTREL
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for (Elf64_Half i = 0; i < ELFHeader->e_phnum; i++)
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{
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memcpy(&ItrProgramHeader, (uint8_t *)BaseImage + ELFHeader->e_phoff + ELFHeader->e_phentsize * i, sizeof(Elf64_Phdr));
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if (ItrProgramHeader.p_type == DT_TEXTREL)
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{
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warn("TEXTREL ELF is not fully tested yet!");
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MemoryImage = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(ElfAppSize));
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memset(MemoryImage, 0, ElfAppSize);
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for (uint64_t i = 0; i < TO_PAGES(ElfAppSize); i++)
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{
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pva.Remap((void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), (void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
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debug("Mapping: %#lx -> %#lx", (uint64_t)MemoryImage + (i * PAGE_SIZE), (uint64_t)MemoryImage + (i * PAGE_SIZE));
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}
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break;
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}
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}
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if (!MemoryImage)
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{
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debug("Allocating %ld pages for image", TO_PAGES(ElfAppSize));
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MemoryImage = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(ElfAppSize));
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memset(MemoryImage, 0, ElfAppSize);
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for (uint64_t i = 0; i < TO_PAGES(ElfAppSize); i++)
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{
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uint64_t Address = (uint64_t)ProgramHeader->p_vaddr;
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Address &= 0xFFFFFFFFFFFFF000;
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pva.Remap((void *)((uint64_t)Address + (i * PAGE_SIZE)), (void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
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debug("Mapping: %#lx -> %#lx", (uint64_t)Address + (i * PAGE_SIZE), (uint64_t)MemoryImage + (i * PAGE_SIZE));
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}
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}
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debug("BaseAddress: %#lx | ElfAppSize: %#lx (%ld, %ld KB)", BaseAddress, ElfAppSize, ElfAppSize, TO_KB(ElfAppSize));
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for (Elf64_Half i = 0; i < ELFHeader->e_phnum; i++)
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{
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memcpy(&ItrProgramHeader, (uint8_t *)BaseImage + ELFHeader->e_phoff + ELFHeader->e_phentsize * i, sizeof(Elf64_Phdr));
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uintptr_t MAddr;
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switch (ItrProgramHeader.p_type)
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{
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case PT_NULL:
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fixme("PT_NULL");
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break;
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case PT_LOAD:
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{
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debug("PT_LOAD - Offset: %#lx VirtAddr: %#lx FileSiz: %ld MemSiz: %ld Align: %#lx",
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ItrProgramHeader.p_offset, ItrProgramHeader.p_vaddr,
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ItrProgramHeader.p_filesz, ItrProgramHeader.p_memsz, ItrProgramHeader.p_align);
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MAddr = (ItrProgramHeader.p_vaddr - BaseAddress) + (uintptr_t)MemoryImage;
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debug("MAddr: %#lx", MAddr);
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memcpy((void *)MAddr, (uint8_t *)BaseImage + ItrProgramHeader.p_offset, ItrProgramHeader.p_filesz);
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debug("memcpy operation: %#lx to %#lx for length %ld", (uint8_t *)BaseImage + ItrProgramHeader.p_offset, MemoryImage + MAddr, ItrProgramHeader.p_filesz);
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break;
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}
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case PT_DYNAMIC:
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{
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debug("PT_DYNAMIC - Offset: %#lx VirtAddr: %#lx FileSiz: %ld MemSiz: %ld Align: %#lx",
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ItrProgramHeader.p_offset, ItrProgramHeader.p_vaddr,
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ItrProgramHeader.p_filesz, ItrProgramHeader.p_memsz, ItrProgramHeader.p_align);
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Elf64_Dyn *Dynamic = (Elf64_Dyn *)((uint8_t *)BaseImage + ItrProgramHeader.p_offset);
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for (uint64_t i = 0; i < ItrProgramHeader.p_filesz / sizeof(Elf64_Dyn); i++)
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{
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switch (Dynamic[i].d_tag)
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{
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case DT_NULL:
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debug("DT_NULL");
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break;
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case DT_NEEDED:
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{
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fixme("DT_NEEDED - Name: %s", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_PLTRELSZ:
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{
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fixme("DT_PLTRELSZ - Size: %ld", Dynamic[i].d_un.d_val);
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}
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case DT_PLTGOT:
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{
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fixme("DT_PLTGOT - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_HASH:
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{
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fixme("DT_HASH - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_STRTAB:
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{
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fixme("DT_STRTAB - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_SYMTAB:
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{
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fixme("DT_SYMTAB - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_RELA:
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{
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fixme("DT_RELA - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_RELASZ:
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{
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fixme("DT_RELASZ - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_RELAENT:
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{
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fixme("DT_RELAENT - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_STRSZ:
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{
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fixme("DT_STRSZ - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_SYMENT:
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{
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fixme("DT_SYMENT - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_INIT:
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{
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fixme("DT_INIT - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_FINI:
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{
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fixme("DT_FINI - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_SONAME:
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{
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fixme("DT_SONAME - Name: %s", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_RPATH:
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{
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fixme("DT_RPATH - Name: %s", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_SYMBOLIC:
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{
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fixme("DT_SYMBOLIC - Name: %s", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_REL:
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{
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fixme("DT_REL - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_RELSZ:
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{
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fixme("DT_RELSZ - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_RELENT:
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{
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fixme("DT_RELENT - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_PLTREL:
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{
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fixme("DT_PLTREL - Type: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_DEBUG:
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{
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fixme("DT_DEBUG - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_TEXTREL:
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{
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fixme("DT_TEXTREL - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_JMPREL:
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{
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fixme("DT_JMPREL - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_BIND_NOW:
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{
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fixme("DT_BIND_NOW - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_INIT_ARRAY:
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{
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fixme("DT_INIT_ARRAY - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_FINI_ARRAY:
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{
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fixme("DT_FINI_ARRAY - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_INIT_ARRAYSZ:
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{
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fixme("DT_INIT_ARRAYSZ - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_FINI_ARRAYSZ:
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{
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fixme("DT_FINI_ARRAYSZ - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_RUNPATH:
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{
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fixme("DT_RUNPATH - Name: %s", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_FLAGS:
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{
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fixme("DT_FLAGS - Flags: %#lx", Dynamic[i].d_un.d_val);
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break;
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}
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case DT_PREINIT_ARRAY:
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{
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fixme("DT_PREINIT_ARRAY - Address: %#lx", Dynamic[i].d_un.d_ptr);
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break;
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}
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case DT_PREINIT_ARRAYSZ:
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{
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fixme("DT_PREINIT_ARRAYSZ - Size: %ld", Dynamic[i].d_un.d_val);
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break;
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}
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/* ... */
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default:
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fixme("DT: %ld", Dynamic[i].d_tag);
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break;
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}
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if (Dynamic[i].d_tag == DT_NULL)
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break;
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}
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break;
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}
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case PT_INTERP: // Do I have to do anything here?
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{
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debug("PT_INTERP - Offset: %#lx VirtAddr: %#lx FileSiz: %ld MemSiz: %ld Align: %#lx",
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ItrProgramHeader.p_offset, ItrProgramHeader.p_vaddr,
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ItrProgramHeader.p_filesz, ItrProgramHeader.p_memsz, ItrProgramHeader.p_align);
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char *Interpreter = (char *)KernelAllocator.RequestPages(TO_PAGES(ItrProgramHeader.p_filesz));
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memcpy(Interpreter, (uint8_t *)BaseImage + ItrProgramHeader.p_offset, ItrProgramHeader.p_filesz);
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fixme("Interpreter: %s", Interpreter);
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KernelAllocator.FreePages(Interpreter, TO_PAGES(ItrProgramHeader.p_filesz));
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break;
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}
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/* ... */
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case PT_PHDR:
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{
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debug("PT_PHDR - Offset: %#lx VirtAddr: %#lx FileSiz: %ld MemSiz: %ld Align: %#lx",
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ItrProgramHeader.p_offset, ItrProgramHeader.p_vaddr,
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ItrProgramHeader.p_filesz, ItrProgramHeader.p_memsz, ItrProgramHeader.p_align);
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break;
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}
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default:
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{
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warn("Unknown or unsupported program header type: %d", ItrProgramHeader.p_type);
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break;
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}
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}
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}
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debug("Entry Point: %#lx", ELFHeader->e_entry);
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Vector<AuxiliaryVector> auxv;
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auxv.push_back({.archaux = {.a_type = AT_PHDR, .a_un = {.a_val = (uint64_t)ELFHeader->e_phoff}}});
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auxv.push_back({.archaux = {.a_type = AT_PHENT, .a_un = {.a_val = (uint64_t)ELFHeader->e_phentsize}}});
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auxv.push_back({.archaux = {.a_type = AT_PHNUM, .a_un = {.a_val = (uint64_t)ELFHeader->e_phnum}}});
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auxv.push_back({.archaux = {.a_type = AT_PAGESZ, .a_un = {.a_val = (uint64_t)PAGE_SIZE}}});
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auxv.push_back({.archaux = {.a_type = AT_BASE, .a_un = {.a_val = (uint64_t)MemoryImage}}});
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auxv.push_back({.archaux = {.a_type = AT_ENTRY, .a_un = {.a_val = (uint64_t)ELFHeader->e_entry + (uint64_t)ProgramHeader->p_offset}}});
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auxv.push_back({.archaux = {.a_type = AT_PLATFORM, .a_un = {.a_val = (uint64_t) "x86_64"}}});
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auxv.push_back({.archaux = {.a_type = AT_EXECFN, .a_un = {.a_val = (uint64_t)Path}}});
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TCB *Thread = TaskManager->CreateThread(Process,
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(IP)ELFHeader->e_entry,
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argv, envp, auxv,
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(IPOffset)ProgramHeader->p_offset,
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Arch,
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Comp);
|
|
ret.Process = Process;
|
|
ret.Thread = Thread;
|
|
ret.Status = ExStatus::OK;
|
|
goto Exit;
|
|
}
|
|
else if (ELFHeader->e_type == ET_DYN)
|
|
{
|
|
fixme("Shared Object");
|
|
}
|
|
else if (ELFHeader->e_type == ET_REL)
|
|
{
|
|
trace("Relocatable");
|
|
void *EP = ELFLoadRel(ELFHeader);
|
|
if (EP == (void *)0xdeadbeef || EP == 0x0)
|
|
{
|
|
ret.Status = ExStatus::InvalidFileEntryPoint;
|
|
goto Exit;
|
|
}
|
|
|
|
Vector<AuxiliaryVector> auxv;
|
|
fixme("auxv");
|
|
|
|
TCB *Thread = TaskManager->CreateThread(Process,
|
|
(IP)EP,
|
|
argv, envp, auxv,
|
|
(IPOffset)BaseImage,
|
|
Arch,
|
|
Comp);
|
|
ret.Process = Process;
|
|
ret.Thread = Thread;
|
|
ret.Status = ExStatus::OK;
|
|
goto Exit;
|
|
}
|
|
else if (ELFHeader->e_type == ET_CORE)
|
|
{
|
|
fixme("Core");
|
|
}
|
|
else
|
|
{
|
|
fixme("Unknown");
|
|
}
|
|
ret.Status = ExStatus::InvalidFileHeader;
|
|
#elif defined(__i386__)
|
|
#elif defined(__aarch64__)
|
|
#endif
|
|
goto Exit;
|
|
}
|
|
default:
|
|
ret.Status = ExStatus::Unsupported;
|
|
goto Exit;
|
|
}
|
|
goto Exit;
|
|
}
|
|
}
|
|
else if (ExFile->Status == FileSystem::FileStatus::NOT_FOUND)
|
|
{
|
|
ret.Status = ExStatus::InvalidFilePath;
|
|
goto Exit;
|
|
}
|
|
else
|
|
{
|
|
ret.Status = ExStatus::InvalidFile;
|
|
goto Exit;
|
|
}
|
|
|
|
Exit:
|
|
if (ret.Status != ExStatus::OK)
|
|
if (ret.Process)
|
|
ret.Process->Status = TaskStatus::Terminated;
|
|
vfs->Close(ExFile);
|
|
return ret;
|
|
}
|
|
}
|