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parsing elf header and improved debug printing

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This commit is contained in:
georgemoralis 2023-03-31 20:27:06 +03:00
parent 730f9ecdbb
commit e37e047c0e
2 changed files with 89 additions and 22 deletions
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93
emulator/Loader/Elf.cpp
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@ -1,6 +1,11 @@
#include "Elf.h"
Elf::~Elf()
{
Reset();
}
static self_header* load_self(FsFile& f)
{
//read self header
@ -22,11 +27,11 @@ static self_segment_header* load_self_segments(FsFile& f, u16 num)
static elf_header* load_elf_header(FsFile& f)
{
auto* ehdr = new elf_header;
auto* m_elf_header = new elf_header;
f.Read(ehdr, sizeof(elf_header));
f.Read(m_elf_header, sizeof(elf_header));
return ehdr;
return m_elf_header;
}
static elf_program_header* load_program_header(FsFile& f, u64 offset, u16 num)
@ -54,8 +59,25 @@ static elf_section_header* load_section_header(FsFile& f, u64 offset, u16 num)
return shdr;
}
void Elf::Reset()//reset all variables
{
if (m_f != nullptr)
{
m_f->Close();
delete m_f;
}
delete m_self;
delete m_elf_header;
delete[] m_self_segments;
m_self = nullptr;
m_self_segments = nullptr;
m_elf_header = nullptr;
}
void Elf::Open(const std::string& file_name)
{
Reset();//reset all variables
m_f = new FsFile;
m_f->Open(file_name, fsOpenMode::fsRead);
@ -72,6 +94,10 @@ void Elf::Open(const std::string& file_name)
m_self_segments = load_self_segments(*m_f, m_self->segment_count);
}
auto elfheader_pos = m_f->Tell();//get the entry pos for elf file
m_elf_header = load_elf_header(*m_f);
DebugDump();
}
@ -110,21 +136,21 @@ bool Elf::isSelfFile() const
void Elf::DebugDump() {
printf("SELF header:\n");
printf(" magic ..............: 0x%08X\n", m_self->magic);
printf(" version .........: %d\n", m_self->version);
printf(" mode .........: 0x%X\n", m_self->mode);
printf(" endian .........: %d\n", m_self->endian);
printf(" attributes .........: 0x%X\n", m_self->attributes);
printf(" category .........: 0x%X\n", m_self->category);
printf(" program_type........: 0x%X\n", m_self->program_type);
printf(" padding1 ...........: 0x%04X\n", m_self->padding1);
printf(" header size ........: 0x%X\n", m_self->header_size);
printf(" meta size .....: %u\n", m_self->meta_size);
printf(" file size ..........: %u\n", m_self->file_size);
printf(" padding2 ...........: 0x%08X\n", m_self->padding2);
printf(" segment count ......: %u\n", m_self->segment_count);
printf(" unknown 1A .........: 0x%04X\n", m_self->unknown1A);
printf(" padding3 ...........: 0x%04X\n", m_self->padding3);
printf(" magic ..............: 0x%08" PRIx32 "\n", m_self->magic);
printf(" version .........: %" PRIu8 "\n", m_self->version);
printf(" mode .........: 0x%02" PRIx8 "\n", m_self->mode);
printf(" endian .........: %" PRIu8 "\n", m_self->endian);
printf(" attributes .........: 0x%02" PRIx8 "\n", m_self->attributes);
printf(" category .........: 0x%02" PRIx8 "\n", m_self->category);
printf(" program_type........: 0x%02" PRIx8 "\n", m_self->program_type);
printf(" padding1 ...........: 0x%04" PRIx16 "\n", m_self->padding1);
printf(" header size ........: %" PRIu16 "\n", m_self->header_size);
printf(" meta size .....: %" PRIu16 "\n", m_self->meta_size);
printf(" file size ..........: %" PRIu32 "\n", m_self->file_size);
printf(" padding2 ...........: 0x%08" PRIx32 "\n", m_self->padding2);
printf(" segment count ......: %" PRIu16 "\n", m_self->segment_count);
printf(" unknown 1A .........: 0x%04" PRIx16 "\n", m_self->unknown1A);
printf(" padding3 ...........: 0x%04" PRIx16 "\n", m_self->padding3);
printf("\n");
printf("SELF segments:\n");
@ -133,10 +159,33 @@ void Elf::DebugDump() {
{
auto segment_header = m_self_segments[i];
printf(" [%d]\n", i);
printf(" flags ............: 0x%llx\n", segment_header.flags);
printf(" file offset ......: 0x%llx\n", segment_header.file_offset);
printf(" file size ........: %llu\n", segment_header.file_size);
printf(" memory size ......: %llu\n", segment_header.memory_size);
printf(" flags ............: 0x%016" PRIx64 "\n", segment_header.flags);
printf(" file offset ......: 0x%016" PRIx64 "\n", segment_header.file_offset);
printf(" file size ........: %" PRIu64 "\n", segment_header.file_size);
printf(" memory size ......: %" PRIu64 "\n", segment_header.memory_size);
}
printf("\n");
printf("Elf header:\n");
printf(" ident .........: 0x");
for (auto i : m_elf_header->e_ident)
{
printf("%02x", i);
}
printf("\n");
printf(" type .........: 0x%04" PRIx16 "\n", m_elf_header->e_type);
printf(" machine .......: 0x%04" PRIx16 "\n", m_elf_header->e_machine);
printf(" version .......: 0x%08" PRIx32 "\n", m_elf_header->e_version);
printf(" entry .........: 0x%016" PRIx64 "\n", m_elf_header->e_entry);
printf(" phoff .........: 0x%016" PRIx64 "\n", m_elf_header->e_phoff);
printf(" shoff .........: 0x%016" PRIx64 "\n", m_elf_header->e_shoff);
printf(" flags .........: 0x%08" PRIx32 "\n", m_elf_header->e_flags);
printf(" ehsize ........: 0x%04" PRIx16 "\n", m_elf_header->e_ehsize);
printf(" phentsize .....: 0x%04" PRIx16 "\n", m_elf_header->e_phentsize);
printf(" phnum .........: %" PRIu16 "\n", m_elf_header->e_phnum);
printf(" shentsize .....: 0x%04" PRIx16 "\n", m_elf_header->e_shentsize);
printf(" shnum .........: %" PRIu16 "\n", m_elf_header->e_shnum);
printf(" shstrndx ......: %" PRIu16 "\n", m_elf_header->e_shstrndx);
}