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shadPS4/src/core/linker.cpp
georgemoralis ae12f351f8 better posix errors
2023-11-12 13:23:35 +02:00

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#include <fmt/core.h>
#include <Zydis/Zydis.h>
#include "common/log.h"
#include "common/string_util.h"
#include "core/aerolib/aerolib.h"
#include "core/aerolib/stubs.h"
#include "core/hle/libraries/libkernel/thread_management.h"
#include "core/linker.h"
#include "core/virtual_memory.h"
namespace Core {
constexpr bool debug_loader = true;
static u64 g_load_addr = SYSTEM_RESERVED + CODE_BASE_OFFSET;
static u64 get_aligned_size(const elf_program_header& phdr)
{
return (phdr.p_align != 0 ? (phdr.p_memsz + (phdr.p_align - 1)) & ~(phdr.p_align - 1) : phdr.p_memsz);
}
static u64 calculate_base_size(const elf_header& ehdr, std::span<const elf_program_header> phdr)
{
u64 base_size = 0;
for (u16 i = 0; i < ehdr.e_phnum; i++)
{
if (phdr[i].p_memsz != 0 && (phdr[i].p_type == PT_LOAD || phdr[i].p_type == PT_SCE_RELRO))
{
u64 last_addr = phdr[i].p_vaddr + get_aligned_size(phdr[i]);
if (last_addr > base_size)
{
base_size = last_addr;
}
}
}
return base_size;
}
static std::string encodeId(u64 nVal)
{
std::string enc;
const char pCodes[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-";
if (nVal < 0x40u)
{
enc += pCodes[nVal];
}
else
{
if (nVal < 0x1000u)
{
enc += pCodes[static_cast<u16>(nVal >> 6u) & 0x3fu];
enc += pCodes[nVal & 0x3fu];
}
else
{
enc += pCodes[static_cast<u16>(nVal >> 12u) & 0x3fu];
enc += pCodes[static_cast<u16>(nVal >> 6u) & 0x3fu];
enc += pCodes[nVal & 0x3fu];
}
}
return enc;
}
Linker::Linker() = default;
Linker::~Linker() = default;
Module* Linker::LoadModule(const std::string& elf_name)
{
std::scoped_lock lock{m_mutex};
auto& m = m_modules.emplace_back();
m.linker = this;
m.elf.Open(elf_name);
if (m.elf.isElfFile()) {
LoadModuleToMemory(&m);
LoadDynamicInfo(&m);
LoadSymbols(&m);
Relocate(&m);
} else {
m_modules.pop_back();
return nullptr; // It is not a valid elf file //TODO check it why!
}
return &m;
}
Module* Linker::FindModule(/*u32 id*/)
{
// TODO atm we only have 1 module so we don't need to iterate on vector
if (m_modules.empty()) [[unlikely]] {
return nullptr;
}
return &m_modules[0];
}
void Linker::LoadModuleToMemory(Module* m)
{
//get elf header, program header
const auto elf_header = m->elf.GetElfHeader();
const auto elf_pheader = m->elf.GetProgramHeader();
u64 base_size = calculate_base_size(elf_header, elf_pheader);
m->aligned_base_size = (base_size & ~(static_cast<u64>(0x1000) - 1)) + 0x1000;//align base size to 0x1000 block size (TODO is that the default block size or it can be changed?
m->base_virtual_addr = VirtualMemory::memory_alloc(g_load_addr, m->aligned_base_size, VirtualMemory::MemoryMode::ExecuteReadWrite);
LOG_INFO_IF(debug_loader, "====Load Module to Memory ========\n");
LOG_INFO_IF(debug_loader, "base_virtual_addr ......: {:#018x}\n", m->base_virtual_addr);
LOG_INFO_IF(debug_loader, "base_size ..............: {:#018x}\n", base_size);
LOG_INFO_IF(debug_loader, "aligned_base_size ......: {:#018x}\n", m->aligned_base_size);
for (u16 i = 0; i < elf_header.e_phnum; i++)
{
switch (elf_pheader[i].p_type)
{
case PT_LOAD:
case PT_SCE_RELRO:
if (elf_pheader[i].p_memsz != 0)
{
u64 segment_addr = elf_pheader[i].p_vaddr + m->base_virtual_addr;
u64 segment_file_size = elf_pheader[i].p_filesz;
u64 segment_memory_size = get_aligned_size(elf_pheader[i]);
auto segment_mode = m->elf.ElfPheaderFlagsStr(elf_pheader[i].p_flags);
LOG_INFO_IF(debug_loader, "program header = [{}] type = {}\n",i,m->elf.ElfPheaderTypeStr(elf_pheader[i].p_type));
LOG_INFO_IF(debug_loader, "segment_addr ..........: {:#018x}\n", segment_addr);
LOG_INFO_IF(debug_loader, "segment_file_size .....: {}\n", segment_file_size);
LOG_INFO_IF(debug_loader, "segment_memory_size ...: {}\n", segment_memory_size);
LOG_INFO_IF(debug_loader, "segment_mode ..........: {}\n", segment_mode);
m->elf.LoadSegment(segment_addr, elf_pheader[i].p_offset, segment_file_size);
}
else
{
LOG_ERROR_IF(debug_loader, "p_memsz==0 in type {}\n", m->elf.ElfPheaderTypeStr(elf_pheader[i].p_type));
}
break;
case PT_DYNAMIC:
if (elf_pheader[i].p_filesz != 0)
{
m->m_dynamic.resize(elf_pheader[i].p_filesz);
m->elf.LoadSegment(reinterpret_cast<u64>(m->m_dynamic.data()), elf_pheader[i].p_offset, elf_pheader[i].p_filesz);
}
else
{
LOG_ERROR_IF(debug_loader, "p_filesz==0 in type {}\n", m->elf.ElfPheaderTypeStr(elf_pheader[i].p_type));
}
break;
case PT_SCE_DYNLIBDATA:
if (elf_pheader[i].p_filesz != 0)
{
m->m_dynamic_data.resize(elf_pheader[i].p_filesz);
m->elf.LoadSegment(reinterpret_cast<u64>(m->m_dynamic_data.data()), elf_pheader[i].p_offset, elf_pheader[i].p_filesz);
}
else
{
LOG_ERROR_IF(debug_loader, "p_filesz==0 in type {}\n", m->elf.ElfPheaderTypeStr(elf_pheader[i].p_type));
}
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)
{
for (const auto* dyn = reinterpret_cast<elf_dynamic*>(m->m_dynamic.data()); dyn->d_tag != DT_NULL; dyn++)
{
switch (dyn->d_tag)
{
case DT_SCE_HASH: //Offset of the hash table.
m->dynamic_info.hash_table = reinterpret_cast<void*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break;
case DT_SCE_HASHSZ: //Size of the hash table
m->dynamic_info.hash_table_size = dyn->d_un.d_val;
break;
case DT_SCE_STRTAB://Offset of the string table.
m->dynamic_info.str_table = reinterpret_cast<char*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break;
case DT_SCE_STRSZ: //Size of the string table.
m->dynamic_info.str_table_size = dyn->d_un.d_val;
break;
case DT_SCE_SYMTAB://Offset of the symbol table.
m->dynamic_info.symbol_table = reinterpret_cast<elf_symbol*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break;
case DT_SCE_SYMTABSZ://Size of the symbol table.
m->dynamic_info.symbol_table_total_size = dyn->d_un.d_val;
break;
case DT_INIT:
m->dynamic_info.init_virtual_addr = dyn->d_un.d_ptr;
break;
case DT_FINI:
m->dynamic_info.fini_virtual_addr = dyn->d_un.d_ptr;
break;
case DT_SCE_PLTGOT: //Offset of the global offset table.
m->dynamic_info.pltgot_virtual_addr = dyn->d_un.d_ptr;
break;
case DT_SCE_JMPREL: //Offset of the table containing jump slots.
m->dynamic_info.jmp_relocation_table = reinterpret_cast<elf_relocation*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break;
case DT_SCE_PLTRELSZ: //Size of the global offset table.
m->dynamic_info.jmp_relocation_table_size = dyn->d_un.d_val;
break;
case DT_SCE_PLTREL: //The type of relocations in the relocation table. Should be DT_RELA
m->dynamic_info.jmp_relocation_type = dyn->d_un.d_val;
if (m->dynamic_info.jmp_relocation_type != DT_RELA)
{
LOG_WARN_IF(debug_loader, "DT_SCE_PLTREL is NOT DT_RELA should check!");
}
break;
case DT_SCE_RELA: //Offset of the relocation table.
m->dynamic_info.relocation_table = reinterpret_cast<elf_relocation*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break;
case DT_SCE_RELASZ: //Size of the relocation table.
m->dynamic_info.relocation_table_size = dyn->d_un.d_val;
break;
case DT_SCE_RELAENT : //The size of relocation table entries.
m->dynamic_info.relocation_table_entries_size = dyn->d_un.d_val;
if (m->dynamic_info.relocation_table_entries_size != 0x18) //this value should always be 0x18
{
LOG_WARN_IF(debug_loader, "DT_SCE_RELAENT is NOT 0x18 should check!");
}
break;
case DT_INIT_ARRAY:// Address of the array of pointers to initialization functions
m->dynamic_info.init_array_virtual_addr = dyn->d_un.d_ptr;
break;
case DT_FINI_ARRAY: // Address of the array of pointers to termination functions
m->dynamic_info.fini_array_virtual_addr = dyn->d_un.d_ptr;
break;
case DT_INIT_ARRAYSZ://Size in bytes of the array of initialization functions
m->dynamic_info.init_array_size = dyn->d_un.d_val;
break;
case DT_FINI_ARRAYSZ://Size in bytes of the array of terminationfunctions
m->dynamic_info.fini_array_size = dyn->d_un.d_val;
break;
case DT_PREINIT_ARRAY://Address of the array of pointers to pre - initialization functions
m->dynamic_info.preinit_array_virtual_addr = dyn->d_un.d_ptr;
break;
case DT_PREINIT_ARRAYSZ://Size in bytes of the array of pre - initialization functions
m->dynamic_info.preinit_array_size = dyn->d_un.d_val;
break;
case DT_SCE_SYMENT: //The size of symbol table entries
m->dynamic_info.symbol_table_entries_size = dyn->d_un.d_val;
if (m->dynamic_info.symbol_table_entries_size != 0x18) //this value should always be 0x18
{
LOG_WARN_IF(debug_loader, "DT_SCE_SYMENT is NOT 0x18 should check!");
}
break;
case DT_DEBUG:
m->dynamic_info.debug = dyn->d_un.d_val;
break;
case DT_TEXTREL:
m->dynamic_info.textrel = dyn->d_un.d_val;
break;
case DT_FLAGS:
m->dynamic_info.flags = dyn->d_un.d_val;
if (m->dynamic_info.flags != 0x04) //this value should always be DF_TEXTREL (0x04)
{
LOG_WARN_IF(debug_loader, "DT_FLAGS is NOT 0x04 should check!");
}
break;
case DT_NEEDED://Offset of the library string in the string table to be linked in.
if (m->dynamic_info.str_table != nullptr)//in theory this should already be filled from about just make a test case
{
m->dynamic_info.needed.push_back(m->dynamic_info.str_table + dyn->d_un.d_val);
}
else
{
LOG_ERROR_IF(debug_loader, "DT_NEEDED str table is not loaded should check!");
}
break;
case DT_SCE_NEEDED_MODULE:
{
ModuleInfo info{};
info.value = dyn->d_un.d_val;
info.name = m->dynamic_info.str_table + info.name_offset;
info.enc_id = encodeId(info.id);
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;
info.enc_id = encodeId(info.id);
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;
info.enc_id = encodeId(info.id);
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;
case DT_SCE_EXPORT_LIB:
{
LibraryInfo info{};
info.value = dyn->d_un.d_val;
info.name = m->dynamic_info.str_table + info.name_offset;
info.enc_id = encodeId(info.id);
m->dynamic_info.export_libs.push_back(info);
}
break;
default:
LOG_INFO_IF(debug_loader, "unsupported dynamic tag ..........: {:#018x}\n", dyn->d_tag);
}
}
}
const ModuleInfo* Linker::FindModule(const Module& m, const std::string& id)
{
const auto& import_modules = m.dynamic_info.import_modules;
int index = 0;
for (const auto& mod : import_modules)
{
if (mod.enc_id.compare(id) == 0)
{
return &import_modules.at(index);
}
index++;
}
const auto& export_modules = m.dynamic_info.export_modules;
index = 0;
for (const auto& mod : export_modules)
{
if (mod.enc_id.compare(id) == 0)
{
return &export_modules.at(index);
}
index++;
}
return nullptr;
}
const LibraryInfo* Linker::FindLibrary(const Module& m, const std::string& id)
{
const auto& import_libs = m.dynamic_info.import_libs;
int index = 0;
for (const auto& lib : import_libs)
{
if (lib.enc_id.compare(id) == 0)
{
return &import_libs.at(index);
}
index++;
}
const auto& export_libs = m.dynamic_info.export_libs;
index = 0;
for (const auto& lib : export_libs)
{
if (lib.enc_id.compare(id) == 0)
{
return &export_libs.at(index);
}
index++;
}
return nullptr;
}
void Linker::LoadSymbols(Module* m)
{
if (m->dynamic_info.symbol_table == nullptr || m->dynamic_info.str_table == nullptr || m->dynamic_info.symbol_table_total_size==0)
{
LOG_INFO_IF(debug_loader, "Symbol table not found!\n");
return;
}
for (auto* sym = m->dynamic_info.symbol_table;
reinterpret_cast<uint8_t*>(sym) < reinterpret_cast<uint8_t*>(m->dynamic_info.symbol_table) + m->dynamic_info.symbol_table_total_size;
sym++)
{
std::string id = std::string(m->dynamic_info.str_table + sym->st_name);
const auto ids = Common::SplitString(id, '#');
if (ids.size() == 3)//symbols are 3 parts name , library , module
{
const auto* library = FindLibrary(*m, ids.at(1));
const auto* module = FindModule(*m, ids.at(2));
auto bind = sym->GetBind();
auto type = sym->GetType();
auto visibility = sym->GetVisibility();
if (library != nullptr || module != nullptr)
{
switch (bind)
{
case STB_GLOBAL:
case STB_WEAK:
break;
default:
LOG_INFO_IF(debug_loader, "Unsupported bind {} for name symbol {} \n", bind,ids.at(0));
continue;
}
switch (type)
{
case STT_OBJECT:
case STT_FUN:
break;
default:
LOG_INFO_IF(debug_loader, "Unsupported type {} for name symbol {} \n", type, ids.at(0));
continue;
}
switch (visibility)
{
case STV_DEFAULT:
break;
default:
LOG_INFO_IF(debug_loader, "Unsupported visibility {} for name symbol {} \n", visibility, ids.at(0));
continue;
}
//if st_value!=0 then it's export symbol
bool is_sym_export = sym->st_value != 0;
std::string nidName = "";
auto aeronid = AeroLib::FindByNid(ids.at(0).c_str());
if (aeronid != nullptr)
{
nidName = aeronid->name;
}
else
{
nidName = "UNK";
}
Loader::SymbolRes sym_r{};
sym_r.name = ids.at(0);
sym_r.nidName = nidName;
sym_r.library = library->name;
sym_r.library_version = library->version;
sym_r.module = module->name;
sym_r.module_version_major = module->version_major;
sym_r.module_version_minor = module->version_minor;
sym_r.type = type;
if (is_sym_export)
{
m->export_sym.AddSymbol(sym_r, sym->st_value + m->base_virtual_addr);
}
else
{
m->import_sym.AddSymbol(sym_r,0);
}
LOG_INFO_IF(debug_loader, "name {} function {} library {} module {} bind {} type {} visibility {}\n", ids.at(0),nidName,library->name, module->name, bind, type, visibility);
}
}
}
}
static void relocate(u32 idx, elf_relocation* rel, Module* m, bool isJmpRel) {
auto type = rel->GetType();
auto symbol = rel->GetSymbol();
auto addend = rel->rel_addend;
auto* symbolsTlb = m->dynamic_info.symbol_table;
auto* namesTlb = m->dynamic_info.str_table;
u64 rel_value = 0;
u64 rel_base_virtual_addr = m->base_virtual_addr;
u64 rel_virtual_addr = m->base_virtual_addr + rel->rel_offset;
bool rel_isResolved = false;
u08 rel_sym_type = 0;
std::string rel_name;
switch (type) {
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);
}
rel_value = rel_base_virtual_addr + addend;
rel_isResolved = true;
break;
case R_X86_64_64:
case R_X86_64_JUMP_SLOT: // similar but addend is not take into account
{
auto sym = symbolsTlb[symbol];
auto sym_bind = sym.GetBind();
auto sym_type = sym.GetType();
auto sym_visibility = sym.GetVisibility();
u64 symbol_vitrual_addr = 0;
Loader::SymbolRecord symrec{};
switch (sym_type) {
case STT_FUN: rel_sym_type = 2; break;
case STT_OBJECT: rel_sym_type = 1; break;
default: LOG_INFO_IF(debug_loader, "unknown symbol type {}\n", sym_type);
}
if (sym_visibility != 0) // should be zero log if else
{
LOG_INFO_IF(debug_loader, "symbol visilibity !=0\n");
}
switch (sym_bind) {
case STB_GLOBAL:
rel_name = namesTlb + sym.st_name;
m->linker->Resolve(rel_name, rel_sym_type, m, &symrec);
symbol_vitrual_addr = symrec.virtual_address;
rel_isResolved = (symbol_vitrual_addr != 0);
rel_name = symrec.name;
if (type == R_X86_64_JUMP_SLOT) {
addend = 0;
}
rel_value = (rel_isResolved ? symbol_vitrual_addr + addend : 0);
if (!rel_isResolved) {
LOG_INFO_IF(debug_loader, "R_X86_64_64-R_X86_64_JUMP_SLOT sym_type {} bind STB_GLOBAL symbol : {:#010x}\n", sym_type, symbol);
}
break;
default: LOG_INFO_IF(debug_loader, "UNK bind {}\n", sym_bind);
}
} break;
default: LOG_INFO_IF(debug_loader, "UNK type {:#010x} rel symbol : {:#010x}\n", type, symbol);
}
if (rel_isResolved) {
VirtualMemory::memory_patch(rel_virtual_addr, rel_value);
}
else
{
LOG_INFO_IF(debug_loader, "function not patched! {}\n",rel_name);
}
}
void Linker::Relocate(Module* m)
{
u32 idx = 0;
for (auto* rel = m->dynamic_info.relocation_table; reinterpret_cast<u08*>(rel) < reinterpret_cast<u08*>(m->dynamic_info.relocation_table) + m->dynamic_info.relocation_table_size; rel++, idx++)
{
relocate(idx, rel, m, false);
}
idx = 0;
for (auto* rel = m->dynamic_info.jmp_relocation_table; reinterpret_cast<u08*>(rel) < reinterpret_cast<u08*>(m->dynamic_info.jmp_relocation_table) + m->dynamic_info.jmp_relocation_table_size; rel++, idx++)
{
relocate(idx, rel, m, true);
}
}
void Linker::Resolve(const std::string& name, int Symtype, Module* m, Loader::SymbolRecord* return_info) {
const auto ids = Common::SplitString(name, '#');
if (ids.size() == 3) // symbols are 3 parts name , library , module
{
const auto* library = FindLibrary(*m, ids.at(1));
const auto* module = FindModule(*m, ids.at(2));
if (library != nullptr && module != nullptr) {
Loader::SymbolRes sr{};
sr.name = ids.at(0);
sr.library = library->name;
sr.library_version = library->version;
sr.module = module->name;
sr.module_version_major = module->version_major;
sr.module_version_minor = module->version_minor;
sr.type = Symtype;
const Loader::SymbolRecord* rec = nullptr;
rec = m_hle_symbols.FindSymbol(sr);
if (rec != nullptr) {
*return_info = *rec;
} else {
auto aeronid = AeroLib::FindByNid(sr.name.c_str());
if (aeronid) {
return_info->name = aeronid->name;
return_info->virtual_address = AeroLib::GetStub(aeronid->nid);
} else {
return_info->virtual_address = AeroLib::GetStub(sr.name.c_str());
return_info->name = "Unknown !!!";
}
LOG_ERROR_IF(debug_loader, "Linker: Stub resolved {} as {} (lib: {}, mod: {}) \n", sr.name, return_info->name, library->name, module->name);
}
}
else
{
__debugbreak();//den tha prepei na ftasoume edo
}
}
else
{
__debugbreak();//oute edo mallon
}
}
using exit_func_t = PS4_SYSV_ABI void (*)();
using entry_func_t = PS4_SYSV_ABI void (*)(EntryParams* params, exit_func_t atexit_func);
static PS4_SYSV_ABI void ProgramExitFunc() {
fmt::print("exit function called\n");
}
static void run_main_entry(u64 addr, EntryParams* params, exit_func_t exit_func) {
//reinterpret_cast<entry_func_t>(addr)(params, exit_func); // can't be used, stack has to have a specific layout
asm volatile (
"andq $-16, %%rsp\n"// Align to 16 bytes
"subq $8, %%rsp\n" // videoout_basic expects the stack to be misaligned
// Kernel also pushes some more things here during process init
// at least: environment, auxv, possibly other things
"pushq 8(%1)\n" // copy EntryParams to top of stack like the kernel does
"pushq 0(%1)\n" // OpenOrbis expects to find it there
"movq %1, %%rdi\n" // also pass params and exit func
"movq %2, %%rsi\n" // as before
"jmp *%0\n" // can't use call here, as that would mangle the prepared stack.
// there's no coming back
:
: "r"(addr), "r"(params), "r"(exit_func)
: "rax", "rsi", "rdi", "rsp", "rbp"
);
}
void Linker::Execute() {
Core::Libraries::LibKernel::pthreadInitSelfMainThread();
EntryParams p{};
p.argc = 1;
p.argv[0] = "eboot.bin"; //hmm should be ok?
const auto& module = m_modules.at(0);
run_main_entry(module.elf.GetElfEntry() + module.base_virtual_addr, &p, ProgramExitFunc);
}
} // namespace Core
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