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initial PT_TLS support

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This commit is contained in:
georgemoralis 2023-11-21 17:27:11 +02:00
parent b6d98d4b72
commit af18453950
2 changed files with 15 additions and 20 deletions
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28
src/core/linker.cpp
View file

@ -158,29 +158,17 @@ void Linker::LoadModuleToMemory(Module* m)
LOG_ERROR_IF(debug_loader, "p_filesz==0 in type {}\n", m->elf.ElfPheaderTypeStr(elf_pheader[i].p_type));
}
break;
case PT_TLS:
m->tls.image_virtual_addr = elf_pheader[i].p_vaddr + m->base_virtual_addr;
m->tls.image_size = get_aligned_size(elf_pheader[i]);
LOG_INFO_IF(debug_loader, "tls virtual address ={:#x}\n", m->tls.image_virtual_addr);
LOG_INFO_IF(debug_loader, "tls image size ={}\n", m->tls.image_size);
break;
default:
LOG_ERROR_IF(debug_loader, "Unimplemented type {}\n", m->elf.ElfPheaderTypeStr(elf_pheader[i].p_type));
}
}
LOG_INFO_IF(debug_loader, "program entry addr ..........: {:#018x}\n", m->elf.GetElfEntry() + m->base_virtual_addr);
auto* rt1 = reinterpret_cast<uint8_t*>(m->elf.GetElfEntry() + m->base_virtual_addr);
ZyanU64 runtime_address = m->elf.GetElfEntry() + m->base_virtual_addr;
// Loop over the instructions in our buffer.
ZyanUSize offset = 0;
ZydisDisassembledInstruction instruction;
while (ZYAN_SUCCESS(ZydisDisassembleIntel(
/* machine_mode: */ ZYDIS_MACHINE_MODE_LONG_64,
/* runtime_address: */ runtime_address,
/* buffer: */ rt1 + offset,
/* length: */ sizeof(rt1) - offset,
/* instruction: */ &instruction
))) {
fmt::print("{:#x}" PRIX64 " {}\n", runtime_address, instruction.text);
offset += instruction.info.length;
runtime_address += instruction.info.length;
}
}
void Linker::LoadDynamicInfo(Module* m)
@ -316,7 +304,7 @@ void Linker::LoadDynamicInfo(Module* m)
break;
case DT_SCE_IMPORT_LIB_ATTR:
//The upper 32-bits should contain the module index multiplied by 0x10000. The lower 32-bits should be a constant 0x9.
LOG_INFO_IF(debug_loader, "unsupported DT_SCE_IMPORT_LIB_ATTR value = ..........: {:#018x}\n", dyn->d_un.d_val);
LOG_INFO_IF(debug_loader, "unsupported DT_SCE_IMPORT_LIB_ATTR value = ......: {:#018x}\n", dyn->d_un.d_val);
break;
case DT_SCE_ORIGINAL_FILENAME:
m->dynamic_info.filename = m->dynamic_info.str_table + dyn->d_un.d_val;
@ -507,7 +495,7 @@ static void relocate(u32 idx, elf_relocation* rel, Module* m, bool isJmpRel) {
case R_X86_64_RELATIVE:
if (symbol != 0) // should be always zero
{
LOG_INFO_IF(debug_loader, "R_X86_64_RELATIVE symbol not zero = {:#010x}\n", type, symbol);
//LOG_INFO_IF(debug_loader, "R_X86_64_RELATIVE symbol not zero = {:#010x}\n", type, symbol);//found it openorbis but i am not sure it worth logging
}
rel_value = rel_base_virtual_addr + addend;
rel_isResolved = true;

7
src/core/linker.h
View file

@ -43,6 +43,11 @@ struct LibraryInfo {
std::string enc_id;
};
struct PS4ThreadLocal {
u64 image_virtual_addr = 0;
u64 image_size = 0;
u64 handler_virtual_addr = 0;
};
struct DynamicModuleInfo {
void* hash_table = nullptr;
u64 hash_table_size = 0;
@ -99,6 +104,8 @@ struct Module {
Loader::SymbolsResolver export_sym;
Loader::SymbolsResolver import_sym;
PS4ThreadLocal tls;
};
class Linker {