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DT_SCE_IMPORT_LIB,DT_SCE_ORIGINAL_FILENAME,DT_SCE_MODULE_INFO added. Dynamic loader should be ok for now

This commit is contained in:
georgemoralis 2023-06-12 08:16:20 +03:00
parent 6fcfe38e26
commit 0682830e2f
3 changed files with 90 additions and 32 deletions
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38
src/Core/PS4/Linker.cpp
View File

@ -163,7 +163,6 @@ void Linker::LoadModuleToMemory(Module* m)
void Linker::LoadDynamicInfo(Module* m)
{
m->dynamic_info = new DynamicModuleInfo;
std::vector<ModuleInfo> needed_modules;
for (const auto* dyn = static_cast<elf_dynamic*>(m->m_dynamic); dyn->d_tag != DT_NULL; dyn++)
{
@ -270,14 +269,47 @@ void Linker::LoadDynamicInfo(Module* m)
LOG_ERROR_IF(debug_loader, "DT_NEEDED str table is not loaded should check!");
}
break;
case DT_OS_NEEDED_MODULE:
case DT_SCE_NEEDED_MODULE:
{
ModuleInfo info{};
info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset;
needed_modules.push_back(info);
m->dynamic_info->import_modules.push_back(info);
}
break;
case DT_SCE_IMPORT_LIB:
{
LibraryInfo info{};
info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset;
m->dynamic_info->import_libs.push_back(info);
}
break;
case DT_SCE_FINGERPRINT:
//The fingerprint is a 24 byte (0x18) size buffer that contains a unique identifier for the given app.
//How exactly this is generated isn't known, however it is not necessary to have a valid fingerprint.
//While an invalid fingerprint will cause a warning to be printed to the kernel log, the ELF will still load and run.
LOG_INFO_IF(debug_loader, "unsupported DT_SCE_FINGERPRINT value = ..........: {:#018x}\n", dyn->d_un.d_val);
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);
break;
case DT_SCE_ORIGINAL_FILENAME:
m->dynamic_info->filename = m->dynamic_info->str_table + dyn->d_un.d_val;
break;
case DT_SCE_MODULE_INFO://probably only useable in shared modules
{
ModuleInfo info{};
info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset;
m->dynamic_info->export_modules.push_back(info);
}
break;
case DT_SCE_MODULE_ATTR:
//TODO?
LOG_INFO_IF(debug_loader, "unsupported DT_SCE_MODULE_ATTR value = ..........: {:#018x}\n", dyn->d_un.d_val);
break;
default:
LOG_INFO_IF(debug_loader, "unsupported dynamic tag ..........: {:#018x}\n", dyn->d_tag);
}

20
src/Core/PS4/Linker.h
View File

@ -32,6 +32,21 @@ struct ModuleInfo
};
};
struct LibraryInfo
{
std::string name;
union
{
u64 value;
struct
{
u32 name_offset;
u16 version;
u16 id;
};
};
};
struct DynamicModuleInfo
{
void* hash_table = nullptr;
@ -67,6 +82,11 @@ struct DynamicModuleInfo
u64 flags = 0;
std::vector<const char*> needed;
std::vector<ModuleInfo> import_modules;
std::vector<ModuleInfo> export_modules;
std::vector<LibraryInfo> import_libs;
std::string filename;//filename with absolute path
};

8
src/Loader/Elf.h
View File

@ -338,7 +338,13 @@ constexpr s64 DT_FINI_ARRAYSZ = 0x0000001c;
constexpr s64 DT_FLAGS = 0x0000001e;
constexpr s64 DT_PREINIT_ARRAY = 0x00000020;
constexpr s64 DT_PREINIT_ARRAYSZ = 0x00000021;
constexpr s64 DT_OS_NEEDED_MODULE= 0x6100000f;
constexpr s64 DT_SCE_FINGERPRINT = 0x61000007;
constexpr s64 DT_SCE_ORIGINAL_FILENAME = 0x61000009;
constexpr s64 DT_SCE_MODULE_INFO = 0x6100000d;
constexpr s64 DT_SCE_NEEDED_MODULE = 0x6100000f;
constexpr s64 DT_SCE_MODULE_ATTR = 0x61000011;
constexpr s64 DT_SCE_IMPORT_LIB = 0x61000015;
constexpr s64 DT_SCE_IMPORT_LIB_ATTR = 0x61000019;
constexpr s64 DT_SCE_HASH = 0x61000025;
constexpr s64 DT_SCE_PLTGOT = 0x61000027;
constexpr s64 DT_SCE_JMPREL = 0x61000029;