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linker: Eliminate orphan news 

* Most of these can just be on the stack, with the rest being std::vectors
This commit is contained in:
GPUCode 2023-10-26 23:07:15 +03:00
parent ca564b928c
commit 7cbe7c762a
2 changed files with 175 additions and 194 deletions
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263
src/Core/PS4/Linker.cpp
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@ -1,7 +1,7 @@
#include "Linker.h" #include "Linker.h"
#include "../virtual_memory.h" #include "../virtual_memory.h"
#include <Util/log.h> #include <Util/log.h>
#include "../../Util/Disassembler.h" #include "Zydis.h"
#include <Util/string_util.h> #include <Util/string_util.h>
#include "Util/aerolib.h" #include "Util/aerolib.h"
#include "Loader/SymbolsResolver.h" #include "Loader/SymbolsResolver.h"
@ -12,15 +12,6 @@ constexpr bool debug_loader = true;
static u64 g_load_addr = SYSTEM_RESERVED + CODE_BASE_OFFSET; static u64 g_load_addr = SYSTEM_RESERVED + CODE_BASE_OFFSET;
Linker::Linker()
{
m_HLEsymbols = new SymbolsResolver;
}
Linker::~Linker()
{
}
static u64 get_aligned_size(const elf_program_header& phdr) 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); return (phdr.p_align != 0 ? (phdr.p_memsz + (phdr.p_align - 1)) & ~(phdr.p_align - 1) : phdr.p_memsz);
@ -28,78 +19,78 @@ static u64 get_aligned_size(const elf_program_header& phdr)
static u64 calculate_base_size(const elf_header& ehdr, std::span<const elf_program_header> phdr) static u64 calculate_base_size(const elf_header& ehdr, std::span<const elf_program_header> phdr)
{ {
u64 base_size = 0; u64 base_size = 0;
for (u16 i = 0; i < ehdr.e_phnum; i++) 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)) 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]); u64 last_addr = phdr[i].p_vaddr + get_aligned_size(phdr[i]);
if (last_addr > base_size) if (last_addr > base_size)
{ {
base_size = last_addr; base_size = last_addr;
} }
} }
} }
return base_size; return base_size;
} }
static std::string encodeId(u64 nVal) static std::string encodeId(u64 nVal)
{ {
std::string enc; std::string enc;
const char pCodes[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-"; const char pCodes[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-";
if (nVal < 0x40u) if (nVal < 0x40u)
{ {
enc += pCodes[nVal]; enc += pCodes[nVal];
} }
else else
{ {
if (nVal < 0x1000u) if (nVal < 0x1000u)
{ {
enc += pCodes[static_cast<u16>(nVal >> 6u) & 0x3fu]; enc += pCodes[static_cast<u16>(nVal >> 6u) & 0x3fu];
enc += pCodes[nVal & 0x3fu]; enc += pCodes[nVal & 0x3fu];
} }
else else
{ {
enc += pCodes[static_cast<u16>(nVal >> 12u) & 0x3fu]; enc += pCodes[static_cast<u16>(nVal >> 12u) & 0x3fu];
enc += pCodes[static_cast<u16>(nVal >> 6u) & 0x3fu]; enc += pCodes[static_cast<u16>(nVal >> 6u) & 0x3fu];
enc += pCodes[nVal & 0x3fu]; enc += pCodes[nVal & 0x3fu];
} }
} }
return enc; return enc;
} }
Linker::Linker() = default;
Linker::~Linker() = default;
Module* Linker::LoadModule(const std::string& elf_name) Module* Linker::LoadModule(const std::string& elf_name)
{ {
std::scoped_lock lock{m_mutex}; std::scoped_lock lock{m_mutex};
auto* m = new Module;
m->linker = this;
m->elf.Open(elf_name);
if (m->elf.isElfFile()) auto& m = m_modules.emplace_back();
{ m.linker = this;
LoadModuleToMemory(m); m.elf.Open(elf_name);
LoadDynamicInfo(m);
LoadSymbols(m);
Relocate(m);
}
else
{
return nullptr;//it is not a valid elf file //TODO check it why!
}
m_modules.push_back(m);//added it to load modules
return m; 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*/) Module* Linker::FindModule(/*u32 id*/)
{ {
//find module . TODO atm we only have 1 module so we don't need to iterate on vector // TODO atm we only have 1 module so we don't need to iterate on vector
Module* m = m_modules.at(0); if (m_modules.empty()) [[unlikely]] {
return nullptr;
if (m) }
{ return &m_modules[0];
return m;
}
return nullptr;
} }
void Linker::LoadModuleToMemory(Module* m) void Linker::LoadModuleToMemory(Module* m)
@ -146,9 +137,8 @@ void Linker::LoadModuleToMemory(Module* m)
case PT_DYNAMIC: case PT_DYNAMIC:
if (elf_pheader[i].p_filesz != 0) if (elf_pheader[i].p_filesz != 0)
{ {
void* dynamic = new u08[elf_pheader[i].p_filesz]; m->m_dynamic.resize(elf_pheader[i].p_filesz);
m->elf.LoadSegment(reinterpret_cast<u64>(dynamic), elf_pheader[i].p_offset, 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);
m->m_dynamic = dynamic;
} }
else else
{ {
@ -158,9 +148,8 @@ void Linker::LoadModuleToMemory(Module* m)
case PT_SCE_DYNLIBDATA: case PT_SCE_DYNLIBDATA:
if (elf_pheader[i].p_filesz != 0) if (elf_pheader[i].p_filesz != 0)
{ {
void* dynamic = new u08[elf_pheader[i].p_filesz]; m->m_dynamic_data.resize(elf_pheader[i].p_filesz);
m->elf.LoadSegment(reinterpret_cast<u64>(dynamic), elf_pheader[i].p_offset, 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);
m->m_dynamic_data = dynamic;
} }
else else
{ {
@ -194,107 +183,105 @@ void Linker::LoadModuleToMemory(Module* m)
void Linker::LoadDynamicInfo(Module* m) void Linker::LoadDynamicInfo(Module* m)
{ {
m->dynamic_info = new DynamicModuleInfo; for (const auto* dyn = reinterpret_cast<elf_dynamic*>(m->m_dynamic.data()); dyn->d_tag != DT_NULL; dyn++)
for (const auto* dyn = static_cast<elf_dynamic*>(m->m_dynamic); dyn->d_tag != DT_NULL; dyn++)
{ {
switch (dyn->d_tag) switch (dyn->d_tag)
{ {
case DT_SCE_HASH: //Offset of the hash table. case DT_SCE_HASH: //Offset of the hash table.
m->dynamic_info->hash_table = reinterpret_cast<void*>(static_cast<uint8_t*>(m->m_dynamic_data) + dyn->d_un.d_ptr); m->dynamic_info.hash_table = reinterpret_cast<void*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break; break;
case DT_SCE_HASHSZ: //Size of the hash table case DT_SCE_HASHSZ: //Size of the hash table
m->dynamic_info->hash_table_size = dyn->d_un.d_val; m->dynamic_info.hash_table_size = dyn->d_un.d_val;
break; break;
case DT_SCE_STRTAB://Offset of the string table. case DT_SCE_STRTAB://Offset of the string table.
m->dynamic_info->str_table = reinterpret_cast<char*>(static_cast<uint8_t*>(m->m_dynamic_data) + dyn->d_un.d_ptr); m->dynamic_info.str_table = reinterpret_cast<char*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break; break;
case DT_SCE_STRSZ: //Size of the string table. case DT_SCE_STRSZ: //Size of the string table.
m->dynamic_info->str_table_size = dyn->d_un.d_val; m->dynamic_info.str_table_size = dyn->d_un.d_val;
break; break;
case DT_SCE_SYMTAB://Offset of the symbol table. case DT_SCE_SYMTAB://Offset of the symbol table.
m->dynamic_info->symbol_table = reinterpret_cast<elf_symbol*>(static_cast<uint8_t*>(m->m_dynamic_data) + dyn->d_un.d_ptr); m->dynamic_info.symbol_table = reinterpret_cast<elf_symbol*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break; break;
case DT_SCE_SYMTABSZ://Size of the symbol table. case DT_SCE_SYMTABSZ://Size of the symbol table.
m->dynamic_info->symbol_table_total_size = dyn->d_un.d_val; m->dynamic_info.symbol_table_total_size = dyn->d_un.d_val;
break; break;
case DT_INIT: case DT_INIT:
m->dynamic_info->init_virtual_addr = dyn->d_un.d_ptr; m->dynamic_info.init_virtual_addr = dyn->d_un.d_ptr;
break; break;
case DT_FINI: case DT_FINI:
m->dynamic_info->fini_virtual_addr = dyn->d_un.d_ptr; m->dynamic_info.fini_virtual_addr = dyn->d_un.d_ptr;
break; break;
case DT_SCE_PLTGOT: //Offset of the global offset table. case DT_SCE_PLTGOT: //Offset of the global offset table.
m->dynamic_info->pltgot_virtual_addr = dyn->d_un.d_ptr; m->dynamic_info.pltgot_virtual_addr = dyn->d_un.d_ptr;
break; break;
case DT_SCE_JMPREL: //Offset of the table containing jump slots. case DT_SCE_JMPREL: //Offset of the table containing jump slots.
m->dynamic_info->jmp_relocation_table = reinterpret_cast<elf_relocation*>(static_cast<uint8_t*>(m->m_dynamic_data) + dyn->d_un.d_ptr); m->dynamic_info.jmp_relocation_table = reinterpret_cast<elf_relocation*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break; break;
case DT_SCE_PLTRELSZ: //Size of the global offset table. case DT_SCE_PLTRELSZ: //Size of the global offset table.
m->dynamic_info->jmp_relocation_table_size = dyn->d_un.d_val; m->dynamic_info.jmp_relocation_table_size = dyn->d_un.d_val;
break; break;
case DT_SCE_PLTREL: //The type of relocations in the relocation table. Should be DT_RELA 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; m->dynamic_info.jmp_relocation_type = dyn->d_un.d_val;
if (m->dynamic_info->jmp_relocation_type != DT_RELA) if (m->dynamic_info.jmp_relocation_type != DT_RELA)
{ {
LOG_WARN_IF(debug_loader, "DT_SCE_PLTREL is NOT DT_RELA should check!"); LOG_WARN_IF(debug_loader, "DT_SCE_PLTREL is NOT DT_RELA should check!");
} }
break; break;
case DT_SCE_RELA: //Offset of the relocation table. case DT_SCE_RELA: //Offset of the relocation table.
m->dynamic_info->relocation_table = reinterpret_cast<elf_relocation*>(static_cast<uint8_t*>(m->m_dynamic_data) + dyn->d_un.d_ptr); m->dynamic_info.relocation_table = reinterpret_cast<elf_relocation*>(m->m_dynamic_data.data() + dyn->d_un.d_ptr);
break; break;
case DT_SCE_RELASZ: //Size of the relocation table. case DT_SCE_RELASZ: //Size of the relocation table.
m->dynamic_info->relocation_table_size = dyn->d_un.d_val; m->dynamic_info.relocation_table_size = dyn->d_un.d_val;
break; break;
case DT_SCE_RELAENT : //The size of relocation table entries. case DT_SCE_RELAENT : //The size of relocation table entries.
m->dynamic_info->relocation_table_entries_size = dyn->d_un.d_val; 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 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!"); LOG_WARN_IF(debug_loader, "DT_SCE_RELAENT is NOT 0x18 should check!");
} }
break; break;
case DT_INIT_ARRAY:// Address of the array of pointers to initialization functions 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; m->dynamic_info.init_array_virtual_addr = dyn->d_un.d_ptr;
break; break;
case DT_FINI_ARRAY: // Address of the array of pointers to termination functions 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; m->dynamic_info.fini_array_virtual_addr = dyn->d_un.d_ptr;
break; break;
case DT_INIT_ARRAYSZ://Size in bytes of the array of initialization functions case DT_INIT_ARRAYSZ://Size in bytes of the array of initialization functions
m->dynamic_info->init_array_size = dyn->d_un.d_val; m->dynamic_info.init_array_size = dyn->d_un.d_val;
break; break;
case DT_FINI_ARRAYSZ://Size in bytes of the array of terminationfunctions case DT_FINI_ARRAYSZ://Size in bytes of the array of terminationfunctions
m->dynamic_info->fini_array_size = dyn->d_un.d_val; m->dynamic_info.fini_array_size = dyn->d_un.d_val;
break; break;
case DT_PREINIT_ARRAY://Address of the array of pointers to pre - initialization functions 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; m->dynamic_info.preinit_array_virtual_addr = dyn->d_un.d_ptr;
break; break;
case DT_PREINIT_ARRAYSZ://Size in bytes of the array of pre - initialization functions 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; m->dynamic_info.preinit_array_size = dyn->d_un.d_val;
break; break;
case DT_SCE_SYMENT: //The size of symbol table entries case DT_SCE_SYMENT: //The size of symbol table entries
m->dynamic_info->symbol_table_entries_size = dyn->d_un.d_val; 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 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!"); LOG_WARN_IF(debug_loader, "DT_SCE_SYMENT is NOT 0x18 should check!");
} }
break; break;
case DT_DEBUG: case DT_DEBUG:
m->dynamic_info->debug = dyn->d_un.d_val; m->dynamic_info.debug = dyn->d_un.d_val;
break; break;
case DT_TEXTREL: case DT_TEXTREL:
m->dynamic_info->textrel = dyn->d_un.d_val; m->dynamic_info.textrel = dyn->d_un.d_val;
break; break;
case DT_FLAGS: case DT_FLAGS:
m->dynamic_info->flags = dyn->d_un.d_val; m->dynamic_info.flags = dyn->d_un.d_val;
if (m->dynamic_info->flags != 0x04) //this value should always be DF_TEXTREL (0x04) 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!"); LOG_WARN_IF(debug_loader, "DT_FLAGS is NOT 0x04 should check!");
} }
break; break;
case DT_NEEDED://Offset of the library string in the string table to be linked in. 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 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); m->dynamic_info.needed.push_back(m->dynamic_info.str_table + dyn->d_un.d_val);
} }
else else
{ {
@ -305,18 +292,18 @@ void Linker::LoadDynamicInfo(Module* m)
{ {
ModuleInfo info{}; ModuleInfo info{};
info.value = dyn->d_un.d_val; info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset; info.name = m->dynamic_info.str_table + info.name_offset;
info.enc_id = encodeId(info.id); info.enc_id = encodeId(info.id);
m->dynamic_info->import_modules.push_back(info); m->dynamic_info.import_modules.push_back(info);
} }
break; break;
case DT_SCE_IMPORT_LIB: case DT_SCE_IMPORT_LIB:
{ {
LibraryInfo info{}; LibraryInfo info{};
info.value = dyn->d_un.d_val; info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset; info.name = m->dynamic_info.str_table + info.name_offset;
info.enc_id = encodeId(info.id); info.enc_id = encodeId(info.id);
m->dynamic_info->import_libs.push_back(info); m->dynamic_info.import_libs.push_back(info);
} }
break; break;
case DT_SCE_FINGERPRINT: case DT_SCE_FINGERPRINT:
@ -330,15 +317,15 @@ void Linker::LoadDynamicInfo(Module* m)
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; break;
case DT_SCE_ORIGINAL_FILENAME: case DT_SCE_ORIGINAL_FILENAME:
m->dynamic_info->filename = m->dynamic_info->str_table + dyn->d_un.d_val; m->dynamic_info.filename = m->dynamic_info.str_table + dyn->d_un.d_val;
break; break;
case DT_SCE_MODULE_INFO://probably only useable in shared modules case DT_SCE_MODULE_INFO://probably only useable in shared modules
{ {
ModuleInfo info{}; ModuleInfo info{};
info.value = dyn->d_un.d_val; info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset; info.name = m->dynamic_info.str_table + info.name_offset;
info.enc_id = encodeId(info.id); info.enc_id = encodeId(info.id);
m->dynamic_info->export_modules.push_back(info); m->dynamic_info.export_modules.push_back(info);
} }
break; break;
case DT_SCE_MODULE_ATTR: case DT_SCE_MODULE_ATTR:
@ -349,9 +336,9 @@ void Linker::LoadDynamicInfo(Module* m)
{ {
LibraryInfo info{}; LibraryInfo info{};
info.value = dyn->d_un.d_val; info.value = dyn->d_un.d_val;
info.name = m->dynamic_info->str_table + info.name_offset; info.name = m->dynamic_info.str_table + info.name_offset;
info.enc_id = encodeId(info.id); info.enc_id = encodeId(info.id);
m->dynamic_info->export_libs.push_back(info); m->dynamic_info.export_libs.push_back(info);
} }
break; break;
default: default:
@ -363,9 +350,9 @@ void Linker::LoadDynamicInfo(Module* m)
const ModuleInfo* Linker::FindModule(const Module& m, const std::string& id) const ModuleInfo* Linker::FindModule(const Module& m, const std::string& id)
{ {
const auto& import_modules = m.dynamic_info->import_modules; const auto& import_modules = m.dynamic_info.import_modules;
int index = 0; int index = 0;
for (auto mod : import_modules) for (const auto& mod : import_modules)
{ {
if (mod.enc_id.compare(id) == 0) if (mod.enc_id.compare(id) == 0)
{ {
@ -373,9 +360,9 @@ const ModuleInfo* Linker::FindModule(const Module& m, const std::string& id)
} }
index++; index++;
} }
const auto& export_modules = m.dynamic_info->export_modules; const auto& export_modules = m.dynamic_info.export_modules;
index = 0; index = 0;
for (auto mod : export_modules) for (const auto& mod : export_modules)
{ {
if (mod.enc_id.compare(id) == 0) if (mod.enc_id.compare(id) == 0)
{ {
@ -388,9 +375,9 @@ const ModuleInfo* Linker::FindModule(const Module& m, const std::string& id)
const LibraryInfo* Linker::FindLibrary(const Module& m, const std::string& id) const LibraryInfo* Linker::FindLibrary(const Module& m, const std::string& id)
{ {
const auto& import_libs = m.dynamic_info->import_libs; const auto& import_libs = m.dynamic_info.import_libs;
int index = 0; int index = 0;
for (auto lib : import_libs) for (const auto& lib : import_libs)
{ {
if (lib.enc_id.compare(id) == 0) if (lib.enc_id.compare(id) == 0)
{ {
@ -398,9 +385,9 @@ const LibraryInfo* Linker::FindLibrary(const Module& m, const std::string& id)
} }
index++; index++;
} }
const auto& export_libs = m.dynamic_info->export_libs; const auto& export_libs = m.dynamic_info.export_libs;
index = 0; index = 0;
for (auto lib : export_libs) for (const auto& lib : export_libs)
{ {
if (lib.enc_id.compare(id) == 0) if (lib.enc_id.compare(id) == 0)
{ {
@ -413,19 +400,17 @@ const LibraryInfo* Linker::FindLibrary(const Module& m, const std::string& id)
void Linker::LoadSymbols(Module* m) 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) 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"); LOG_INFO_IF(debug_loader, "Symbol table not found!\n");
return; return;
} }
m->export_sym = new SymbolsResolver;
m->import_sym = new SymbolsResolver;
for (auto* sym = m->dynamic_info->symbol_table; 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; reinterpret_cast<uint8_t*>(sym) < reinterpret_cast<uint8_t*>(m->dynamic_info.symbol_table) + m->dynamic_info.symbol_table_total_size;
sym++) sym++)
{ {
std::string id = std::string(m->dynamic_info->str_table + sym->st_name); std::string id = std::string(m->dynamic_info.str_table + sym->st_name);
auto ids = StringUtil::split_string(id, '#'); auto ids = StringUtil::split_string(id, '#');
if (ids.size() == 3)//symbols are 3 parts name , library , module if (ids.size() == 3)//symbols are 3 parts name , library , module
{ {
@ -489,11 +474,11 @@ void Linker::LoadSymbols(Module* m)
if (is_sym_export) if (is_sym_export)
{ {
m->export_sym->AddSymbol(sym_r, sym->st_value + m->base_virtual_addr); m->export_sym.AddSymbol(sym_r, sym->st_value + m->base_virtual_addr);
} }
else else
{ {
m->import_sym->AddSymbol(sym_r,0); m->import_sym.AddSymbol(sym_r,0);
} }
@ -506,8 +491,8 @@ static void relocate(u32 idx, elf_relocation* rel, Module* m, bool isJmpRel) {
auto type = rel->GetType(); auto type = rel->GetType();
auto symbol = rel->GetSymbol(); auto symbol = rel->GetSymbol();
auto addend = rel->rel_addend; auto addend = rel->rel_addend;
auto* symbolsTlb = m->dynamic_info->symbol_table; auto* symbolsTlb = m->dynamic_info.symbol_table;
auto* namesTlb = m->dynamic_info->str_table; auto* namesTlb = m->dynamic_info.str_table;
u64 rel_value = 0; u64 rel_value = 0;
u64 rel_base_virtual_addr = m->base_virtual_addr; u64 rel_base_virtual_addr = m->base_virtual_addr;
@ -580,12 +565,12 @@ static void relocate(u32 idx, elf_relocation* rel, Module* m, bool isJmpRel) {
void Linker::Relocate(Module* m) void Linker::Relocate(Module* m)
{ {
u32 idx = 0; 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++) 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); relocate(idx, rel, m, false);
} }
idx = 0; 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++) 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); relocate(idx, rel, m, true);
} }
@ -610,10 +595,8 @@ void Linker::Resolve(const std::string& name, int Symtype, Module* m, SymbolReco
sr.type = Symtype; sr.type = Symtype;
const SymbolRecord* rec = nullptr; const SymbolRecord* rec = nullptr;
rec = m_hle_symbols.FindSymbol(sr);
if (m_HLEsymbols != nullptr) {
rec = m_HLEsymbols->FindSymbol(sr);
}
if (rec != nullptr) { if (rec != nullptr) {
*return_info = *rec; *return_info = *rec;
} else { } else {
@ -679,6 +662,6 @@ void Linker::Execute()
p.argc = 1; p.argc = 1;
p.argv[0] = "eboot.bin"; //hmm should be ok? p.argv[0] = "eboot.bin"; //hmm should be ok?
run_main_entry(m_modules.at(0)->elf.GetElfEntry()+m_modules.at(0)->base_virtual_addr, &p, ProgramExitFunc); const auto& module = m_modules.at(0);
run_main_entry(module.elf.GetElfEntry() + module.base_virtual_addr, &p, ProgramExitFunc);
} }

106
src/Core/PS4/Linker.h
View File

@ -14,23 +14,6 @@ struct EntryParams {
const char* argv[3]; const char* argv[3];
}; };
// This struct keeps neccesary info about loaded modules. Main executeable is included too as well
struct Module
{
Elf elf;
u64 aligned_base_size = 0;
u64 base_virtual_addr = 0; // Base virtual address
Linker* linker = nullptr;
void* m_dynamic = nullptr;
void* m_dynamic_data = nullptr;
DynamicModuleInfo* dynamic_info = nullptr;
SymbolsResolver* export_sym = nullptr;
SymbolsResolver* import_sym = nullptr;
};
struct ModuleInfo struct ModuleInfo
{ {
std::string name; std::string name;
@ -66,50 +49,65 @@ struct LibraryInfo
struct DynamicModuleInfo struct DynamicModuleInfo
{ {
void* hash_table = nullptr; void* hash_table = nullptr;
u64 hash_table_size = 0; u64 hash_table_size = 0;
char* str_table = nullptr; char* str_table = nullptr;
u64 str_table_size = 0; u64 str_table_size = 0;
elf_symbol* symbol_table = nullptr; elf_symbol* symbol_table = nullptr;
u64 symbol_table_total_size = 0; u64 symbol_table_total_size = 0;
u64 symbol_table_entries_size = 0; u64 symbol_table_entries_size = 0;
u64 init_virtual_addr = 0; u64 init_virtual_addr = 0;
u64 fini_virtual_addr = 0; u64 fini_virtual_addr = 0;
u64 pltgot_virtual_addr = 0; u64 pltgot_virtual_addr = 0;
u64 init_array_virtual_addr = 0; u64 init_array_virtual_addr = 0;
u64 fini_array_virtual_addr = 0; u64 fini_array_virtual_addr = 0;
u64 preinit_array_virtual_addr = 0; u64 preinit_array_virtual_addr = 0;
u64 init_array_size = 0; u64 init_array_size = 0;
u64 fini_array_size = 0; u64 fini_array_size = 0;
u64 preinit_array_size = 0; u64 preinit_array_size = 0;
elf_relocation* jmp_relocation_table = nullptr; elf_relocation* jmp_relocation_table = nullptr;
u64 jmp_relocation_table_size = 0; u64 jmp_relocation_table_size = 0;
s64 jmp_relocation_type = 0; s64 jmp_relocation_type = 0;
elf_relocation* relocation_table = nullptr; elf_relocation* relocation_table = nullptr;
u64 relocation_table_size = 0; u64 relocation_table_size = 0;
u64 relocation_table_entries_size = 0; u64 relocation_table_entries_size = 0;
u64 debug = 0; u64 debug = 0;
u64 textrel = 0; u64 textrel = 0;
u64 flags = 0; u64 flags = 0;
std::vector<const char*> needed; std::vector<const char*> needed;
std::vector<ModuleInfo> import_modules; std::vector<ModuleInfo> import_modules;
std::vector<ModuleInfo> export_modules; std::vector<ModuleInfo> export_modules;
std::vector<LibraryInfo> import_libs; std::vector<LibraryInfo> import_libs;
std::vector<LibraryInfo> export_libs; std::vector<LibraryInfo> export_libs;
std::string filename;//filename with absolute path
std::string filename; // Filename with absolute path
}; };
class Linker // This struct keeps neccesary info about loaded modules. Main executeable is included too as well
struct Module
{ {
Elf elf;
u64 aligned_base_size = 0;
u64 base_virtual_addr = 0; // Base virtual address
Linker* linker = nullptr;
std::vector<u08> m_dynamic;
std::vector<u08> m_dynamic_data;
DynamicModuleInfo dynamic_info{};
SymbolsResolver export_sym;
SymbolsResolver import_sym;
};
class Linker {
public: public:
Linker(); Linker();
virtual ~Linker(); virtual ~Linker();
@ -119,16 +117,16 @@ public:
void LoadModuleToMemory(Module* m); void LoadModuleToMemory(Module* m);
void LoadDynamicInfo(Module* m); void LoadDynamicInfo(Module* m);
void LoadSymbols(Module* m); void LoadSymbols(Module* m);
SymbolsResolver* getHLESymbols() { return m_HLEsymbols; } SymbolsResolver& getHLESymbols() { return m_hle_symbols; }
void Relocate(Module* m); void Relocate(Module* m);
void Resolve(const std::string& name, int Symtype, Module* m, SymbolRecord* return_info); void Resolve(const std::string& name, int Symtype, Module* m, SymbolRecord* return_info);
void Execute(); void Execute();
private: private:
const ModuleInfo* FindModule(const Module& m, const std::string& id); const ModuleInfo* FindModule(const Module& m, const std::string& id);
const LibraryInfo* FindLibrary(const Module& program, const std::string& id); const LibraryInfo* FindLibrary(const Module& program, const std::string& id);
std::vector<Module*> m_modules; std::vector<Module> m_modules;
SymbolsResolver* m_HLEsymbols = nullptr; SymbolsResolver m_hle_symbols{};
std::mutex m_mutex; std::mutex m_mutex;
}; };