365 lines
12 KiB
C++
365 lines
12 KiB
C++
#include "Elf.h"
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#include "spdlog/spdlog.h"
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#include "spdlog/sinks/basic_file_sink.h"
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#include <spdlog/sinks/stdout_color_sinks.h>
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Elf::~Elf()
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{
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Reset();
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}
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static self_header* load_self(FsFile& f)
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{
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//read self header
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auto* self = new self_header;
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f.Read(self, sizeof(self_header));
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return self;
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}
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static self_segment_header* load_self_segments(FsFile& f, u16 num)
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{
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auto* segs = new self_segment_header[num];
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f.Read(segs, sizeof(self_segment_header) * num);
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return segs;
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}
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static elf_header* load_elf_header(FsFile& f)
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{
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auto* m_elf_header = new elf_header;
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f.Read(m_elf_header, sizeof(elf_header));
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return m_elf_header;
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}
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static elf_program_header* load_program_header(FsFile& f, u64 offset, u16 num)
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{
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auto* phdr = new elf_program_header[num];
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f.Seek(offset,fsSeekMode::fsSeekSet);
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f.Read(phdr, sizeof(elf_program_header) * num);
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return phdr;
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}
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static elf_section_header* load_section_header(FsFile& f, u64 offset, u16 num)
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{
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if (num == 0)//just in case we don't have section headers
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{
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return nullptr;
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}
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auto* shdr = new elf_section_header[num];
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f.Seek(offset,fsSeekMode::fsSeekSet);
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f.Read(shdr, sizeof(elf_section_header) * num);
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return shdr;
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}
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void Elf::Reset()//reset all variables
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{
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if (m_f != nullptr)
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{
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m_f->Close();
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delete m_f;
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}
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delete m_self;
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delete m_elf_header;
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delete m_self_id_header;
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delete[] m_self_segments;
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delete[] m_elf_phdr;
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delete[] m_elf_shdr;
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m_self = nullptr;
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m_self_segments = nullptr;
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m_elf_header = nullptr;
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m_elf_phdr = nullptr;
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m_elf_shdr = nullptr;
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m_self_id_header = nullptr;
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}
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void Elf::Open(const std::string& file_name)
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{
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Reset();//reset all variables
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m_f = new FsFile;
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m_f->Open(file_name, fsOpenMode::fsRead);
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m_self = load_self(*m_f);
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bool isself = isSelfFile();
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if (!isself)
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{
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delete m_self;
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m_self = nullptr;
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m_f->Seek(0,fsSeekMode::fsSeekSet); //it is not an self file move to the start of file
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}
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else
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{
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m_self_segments = load_self_segments(*m_f, m_self->segment_count);
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}
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auto elfheader_pos = m_f->Tell();//get the entry pos for elf file
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m_elf_header = load_elf_header(*m_f);
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if (!isElfFile())
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{
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delete m_elf_header;
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m_elf_header = nullptr;
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}
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if (m_elf_header != nullptr)
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{
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m_elf_phdr = load_program_header(*m_f, elfheader_pos + m_elf_header->e_phoff, m_elf_header->e_phnum);
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m_elf_shdr = load_section_header(*m_f, elfheader_pos + m_elf_header->e_shoff, m_elf_header->e_shnum);
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}
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if (isself && m_elf_header != nullptr)
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{
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u64 header_size = 0;
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header_size += sizeof(self_header);
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header_size += sizeof(self_segment_header) * m_self->segment_count;
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header_size += sizeof(elf_header);
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header_size += m_elf_header->e_phnum * m_elf_header->e_phentsize;
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header_size += m_elf_header->e_shnum * m_elf_header->e_shentsize;
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header_size += 15; header_size &= ~15; // align
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if (m_elf_header->e_ehsize - header_size >= sizeof(elf_program_id_header))
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{
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m_f->Seek(header_size, fsSeekMode::fsSeekSet);
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m_self_id_header = new elf_program_id_header;
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m_f->Read(m_self_id_header, sizeof(elf_program_id_header));
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}
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}
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DebugDump();
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}
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bool Elf::isSelfFile() const
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{
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if (m_f == nullptr)
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{
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return false;
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}
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if (m_self == nullptr)
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{
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return false;//if we can't load self header return false
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}
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if (m_self->magic != self_header::signature)
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{
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printf("Not a SELF file. Magic file mismatched! current = 0x%08X required = 0x%08X\n", m_self->magic, self_header::signature);
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return false;
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}
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if (m_self->version != 0x00 || m_self->mode != 0x01 || m_self->endian != 0x01 || m_self->attributes != 0x12)
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{
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printf("Unknown SELF file\n");
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return false;
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}
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if (m_self->category != 0x01 || m_self->program_type != 0x01)
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{
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printf("Unknown SELF file\n");
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return false;
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}
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return true;
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}
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bool Elf::isElfFile() const
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{
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if (m_f == nullptr)
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{
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return false;
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}
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if (m_elf_header == nullptr)
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{
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return false;
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}
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if (m_elf_header->e_ident[EI_MAG0] != ELFMAG0 || m_elf_header->e_ident[EI_MAG1] != ELFMAG1 || m_elf_header->e_ident[EI_MAG2] != ELFMAG2 ||
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m_elf_header->e_ident[EI_MAG3] != ELFMAG3)
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{
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printf("ERROR:Not an ELF file magic is wrong!\n");
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return false;
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}
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if (m_elf_header->e_ident[EI_CLASS] != ELFCLASS64)
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{
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printf("ERROR:e_ident[EI_CLASS] expected 0x02 is (0x%x)\n", m_elf_header->e_ident[EI_CLASS]);
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return false;
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}
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if (m_elf_header->e_ident[EI_DATA] != ELFDATA2LSB)
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{
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printf("ERROR:e_ident[EI_DATA] expected 0x01 is (0x%x)\n", m_elf_header->e_ident[EI_DATA]);
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return false;
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}
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if (m_elf_header->e_ident[EI_VERSION] != EV_CURRENT)
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{
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printf("ERROR:e_ident[EI_VERSION] expected 0x01 is (0x%x)\n", m_elf_header->e_ident[EI_VERSION]);
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return false;
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}
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if (m_elf_header->e_ident[EI_OSABI] != ELFOSABI_FREEBSD)
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{
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printf("ERROR:e_ident[EI_OSABI] expected 0x09 is (0x%x)\n", m_elf_header->e_ident[EI_OSABI]);
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return false;
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}
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if (m_elf_header->e_ident[EI_ABIVERSION] != ELFABIVERSION_AMDGPU_HSA_V2)
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{
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printf("ERROR:e_ident[EI_ABIVERSION] expected 0x00 is (0x%x)\n", m_elf_header->e_ident[EI_ABIVERSION]);
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return false;
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}
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if (m_elf_header->e_type != ET_DYNEXEC && m_elf_header->e_type != ET_DYNAMIC)
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{
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printf("ERROR:e_type expected 0xFE10 OR 0xFE18 is (%04x)\n", m_elf_header->e_type);
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return false;
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}
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if (m_elf_header->e_machine != EM_X86_64)
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{
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printf("ERROR:e_machine expected 0x3E is (%04x)\n", m_elf_header->e_machine);
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return false;
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}
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if (m_elf_header->e_version != EV_CURRENT)
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{
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printf("ERROR:m_elf_header->e_version expected 0x01 is (0x%x)\n", m_elf_header->e_version);
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return false;
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}
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if (m_elf_header->e_phentsize != sizeof(elf_program_header))
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{
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printf("ERROR:e_phentsize (%d) != sizeof(elf_program_header)\n", m_elf_header->e_phentsize);
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return false;
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}
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if (m_elf_header->e_shentsize > 0 && m_elf_header->e_shentsize != sizeof(elf_section_header)) //commercial games doesn't appear to have section headers
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{
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printf("ERROR:e_shentsize (%d) != sizeof(elf_section_header)\n", m_elf_header->e_shentsize);
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return false;
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}
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return true;
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}
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void Elf::DebugDump() {
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std::vector<spdlog::sink_ptr> sinks;
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sinks.push_back(std::make_shared<spdlog::sinks::stdout_color_sink_mt>());
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sinks.push_back(std::make_shared<spdlog::sinks::basic_file_sink_mt>("output.log", true));
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spdlog::set_default_logger(std::make_shared<spdlog::logger>("shadps4 logger", begin(sinks), end(sinks)));
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auto f = std::make_unique<spdlog::pattern_formatter>("%v", spdlog::pattern_time_type::local, std::string("")); // disable eol
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spdlog::set_formatter(std::move(f));
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spdlog::info("SELF header:\n");
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spdlog::info(" magic ..............: 0x{:x}\n", m_self->magic);
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spdlog::info(" version .........: {}\n", m_self->version);
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spdlog::info(" mode .........: {:#04x}\n", m_self->mode);
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spdlog::info(" endian .........: {}\n", m_self->endian);
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spdlog::info(" attributes .........: {:#04x}\n", m_self->attributes);
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spdlog::info(" category .........: {:#04x}\n", m_self->category);
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spdlog::info(" program_type........: {:#04x}\n", m_self->program_type);
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spdlog::info(" padding1 ...........: {:#06x}\n", m_self->padding1);
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spdlog::info(" header size ........: {}\n", m_self->header_size);
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spdlog::info(" meta size .....: {}\n", m_self->meta_size);
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spdlog::info(" file size ..........: {}\n", m_self->file_size);
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spdlog::info(" padding2 ...........: {:#010x}\n", m_self->padding2);
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spdlog::info(" segment count ......: {}\n", m_self->segment_count);
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spdlog::info(" unknown 1A .........: {:#06x}\n", m_self->unknown1A);
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spdlog::info(" padding3 ...........: {:#010x}\n", m_self->padding3);
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spdlog::info("\n");
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spdlog::info("SELF segments:\n");
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for (int i = 0; i < m_self->segment_count; i++)
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{
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auto segment_header = m_self_segments[i];
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spdlog::info(" [{}]\n", i);
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spdlog::info(" flags ............: {:#018x}\n", segment_header.flags);
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spdlog::info(" file offset ......: {:#018x}\n", segment_header.file_offset);
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spdlog::info(" file size ........: {}\n", segment_header.file_size);
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spdlog::info(" memory size ......: {}\n", segment_header.memory_size);
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}
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spdlog::info("\n");
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spdlog::info("Elf header:\n");
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spdlog::info(" ident .........: 0x");
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for (auto i : m_elf_header->e_ident)
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{
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spdlog::info("{:02x}", i);
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}
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spdlog::info("\n");
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spdlog::info(" type .........: {:#06x}\n", m_elf_header->e_type);
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spdlog::info(" machine .......: {:#06x}\n", m_elf_header->e_machine);
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spdlog::info(" version .......: {:#010x}\n", m_elf_header->e_version);
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spdlog::info(" entry .........: {:#018x}\n", m_elf_header->e_entry);
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spdlog::info(" phoff .........: {:#018x}\n", m_elf_header->e_phoff);
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spdlog::info(" shoff .........: {:#018x}\n", m_elf_header->e_shoff);
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spdlog::info(" flags .........: {:#010x}\n", m_elf_header->e_flags);
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spdlog::info(" ehsize ........: {}\n", m_elf_header->e_ehsize);
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spdlog::info(" phentsize .....: {}\n", m_elf_header->e_phentsize);
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spdlog::info(" phnum .........: {}\n", m_elf_header->e_phnum);
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spdlog::info(" shentsize .....: {}\n", m_elf_header->e_shentsize);
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spdlog::info(" shnum .........: {}\n", m_elf_header->e_shnum);
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spdlog::info(" shstrndx ......: {}\n", m_elf_header->e_shstrndx);
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if (m_elf_header->e_phentsize > 0)
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{
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spdlog::info("Program headers:\n");
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for (u16 i = 0; i < m_elf_header->e_phnum; i++)
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{
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spdlog::info("--- phdr [{}] ---\n", i);
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spdlog::info("p_type ....: {:#010x}\n", (m_elf_phdr+i)->p_type);
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spdlog::info("p_flags ...: {:#010x}\n", (m_elf_phdr + i)->p_flags);
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spdlog::info("p_offset ..: {:#018x}\n", (m_elf_phdr + i)->p_offset);
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spdlog::info("p_vaddr ...: {:#018x}\n", (m_elf_phdr + i)->p_vaddr);
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spdlog::info("p_paddr ...: {:#018x}\n", (m_elf_phdr + i)->p_paddr);
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spdlog::info("p_filesz ..: {:#018x}\n", (m_elf_phdr + i)->p_filesz);
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spdlog::info("p_memsz ...: {:#018x}\n", (m_elf_phdr + i)->p_memsz);
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spdlog::info("p_align ...: {:#018x}\n", (m_elf_phdr + i)->p_align);
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}
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}
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if (m_elf_header->e_shentsize > 0)
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{
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spdlog::info("Section headers:\n");
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for (u16 i = 0; i < m_elf_header->e_shnum; i++)
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{
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spdlog::info("--- shdr {} --\n", i);
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spdlog::info("sh_name ........: {}\n", (m_elf_shdr + i)->sh_name);
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spdlog::info("sh_type ........: {:#010x}\n", (m_elf_shdr + i)->sh_type);
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spdlog::info("sh_flags .......: {:#018x}\n", (m_elf_shdr + i)->sh_flags);
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spdlog::info("sh_addr ........: {:#018x}\n", (m_elf_shdr + i)->sh_addr);
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spdlog::info("sh_offset ......: {:#018x}\n", (m_elf_shdr + i)->sh_offset);
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spdlog::info("sh_size ........: {:#018x}\n", (m_elf_shdr + i)->sh_size);
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spdlog::info("sh_link ........: {:#010x}\n", (m_elf_shdr + i)->sh_link);
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spdlog::info("sh_info ........: {:#010x}\n", (m_elf_shdr + i)->sh_info);
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spdlog::info("sh_addralign ...: {:#018x}\n", (m_elf_shdr + i)->sh_addralign);
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spdlog::info("sh_entsize .....: {:#018x}\n", (m_elf_shdr + i)->sh_entsize);
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}
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}
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if (m_self_id_header != nullptr)
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{
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spdlog::info("SELF info:\n");
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spdlog::info("auth id ............: {:#018x}\n", m_self_id_header->authid);
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spdlog::info("program type .......: {:#018x}\n", m_self_id_header->program_type);
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spdlog::info("app version ........: {:#018x}\n", m_self_id_header->appver);
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spdlog::info("fw version .........: {:#018x}\n", m_self_id_header->firmver);
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spdlog::info("digest..............: 0x");
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for (int i = 0; i < 32; i++) spdlog::info("{:02x}", m_self_id_header->digest[i]);
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spdlog::info("\n");
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}
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} |