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started elf loader

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This commit is contained in:
georgemoralis 2023-03-31 08:59:19 +03:00
parent be996892a9
commit 730f9ecdbb
2 changed files with 80 additions and 0 deletions
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36
emulator/Loader/Elf.cpp
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@ -19,12 +19,48 @@ static self_segment_header* load_self_segments(FsFile& f, u16 num)
return segs;
}
static elf_header* load_elf_header(FsFile& f)
{
auto* ehdr = new elf_header;
f.Read(ehdr, sizeof(elf_header));
return ehdr;
}
static elf_program_header* load_program_header(FsFile& f, u64 offset, u16 num)
{
auto* phdr = new elf_program_header[num];
f.Seek(offset,fsSeekMode::fsSeekSet);
f.Read(phdr, sizeof(elf_program_header) * num);
return phdr;
}
static elf_section_header* load_section_header(FsFile& f, u64 offset, u16 num)
{
if (num == 0)//just in case we don't have section headers
{
return nullptr;
}
auto* shdr = new elf_section_header[num];
f.Seek(offset,fsSeekMode::fsSeekSet);
f.Read(shdr, sizeof(elf_section_header) * num);
return shdr;
}
void Elf::Open(const std::string& file_name)
{
m_f = new FsFile;
m_f->Open(file_name, fsOpenMode::fsRead);
m_self = load_self(*m_f);
if (!isSelfFile())
{
delete m_self;