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-rw-r--r--src/core/loader/linker.cpp147
-rw-r--r--src/core/loader/linker.h36
-rw-r--r--src/core/loader/nro.h4
-rw-r--r--src/core/loader/nso.h4
4 files changed, 4 insertions, 187 deletions
diff --git a/src/core/loader/linker.cpp b/src/core/loader/linker.cpp
deleted file mode 100644
index 57ca8c3ee..000000000
--- a/src/core/loader/linker.cpp
+++ /dev/null
@@ -1,147 +0,0 @@
-// Copyright 2018 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <vector>
-
-#include "common/common_funcs.h"
-#include "common/logging/log.h"
-#include "common/swap.h"
-#include "core/loader/linker.h"
-#include "core/memory.h"
-
-namespace Loader {
-
-enum class RelocationType : u32 { ABS64 = 257, GLOB_DAT = 1025, JUMP_SLOT = 1026, RELATIVE = 1027 };
-
-enum DynamicType : u32 {
- DT_NULL = 0,
- DT_PLTRELSZ = 2,
- DT_STRTAB = 5,
- DT_SYMTAB = 6,
- DT_RELA = 7,
- DT_RELASZ = 8,
- DT_STRSZ = 10,
- DT_JMPREL = 23,
-};
-
-struct Elf64_Rela {
- u64_le offset;
- RelocationType type;
- u32_le symbol;
- s64_le addend;
-};
-static_assert(sizeof(Elf64_Rela) == 0x18, "Elf64_Rela has incorrect size.");
-
-struct Elf64_Dyn {
- u64_le tag;
- u64_le value;
-};
-static_assert(sizeof(Elf64_Dyn) == 0x10, "Elf64_Dyn has incorrect size.");
-
-struct Elf64_Sym {
- u32_le name;
- INSERT_PADDING_BYTES(0x2);
- u16_le shndx;
- u64_le value;
- u64_le size;
-};
-static_assert(sizeof(Elf64_Sym) == 0x18, "Elf64_Sym has incorrect size.");
-
-void Linker::WriteRelocations(std::vector<u8>& program_image, const std::vector<Symbol>& symbols,
- u64 relocation_offset, u64 size, VAddr load_base) {
- for (u64 i = 0; i < size; i += sizeof(Elf64_Rela)) {
- Elf64_Rela rela;
- std::memcpy(&rela, &program_image[relocation_offset + i], sizeof(Elf64_Rela));
-
- const Symbol& symbol = symbols[rela.symbol];
- switch (rela.type) {
- case RelocationType::RELATIVE: {
- const u64 value = load_base + rela.addend;
- if (!symbol.name.empty()) {
- exports[symbol.name] = value;
- }
- std::memcpy(&program_image[rela.offset], &value, sizeof(u64));
- break;
- }
- case RelocationType::JUMP_SLOT:
- case RelocationType::GLOB_DAT:
- if (!symbol.value) {
- imports[symbol.name] = {rela.offset + load_base, 0};
- } else {
- exports[symbol.name] = symbol.value;
- std::memcpy(&program_image[rela.offset], &symbol.value, sizeof(u64));
- }
- break;
- case RelocationType::ABS64:
- if (!symbol.value) {
- imports[symbol.name] = {rela.offset + load_base, rela.addend};
- } else {
- const u64 value = symbol.value + rela.addend;
- exports[symbol.name] = value;
- std::memcpy(&program_image[rela.offset], &value, sizeof(u64));
- }
- break;
- default:
- LOG_CRITICAL(Loader, "Unknown relocation type: {}", static_cast<int>(rela.type));
- break;
- }
- }
-}
-
-void Linker::Relocate(std::vector<u8>& program_image, u32 dynamic_section_offset, VAddr load_base) {
- std::map<u64, u64> dynamic;
- while (dynamic_section_offset < program_image.size()) {
- Elf64_Dyn dyn;
- std::memcpy(&dyn, &program_image[dynamic_section_offset], sizeof(Elf64_Dyn));
- dynamic_section_offset += sizeof(Elf64_Dyn);
-
- if (dyn.tag == DT_NULL) {
- break;
- }
- dynamic[dyn.tag] = dyn.value;
- }
-
- u64 offset = dynamic[DT_SYMTAB];
- std::vector<Symbol> symbols;
- while (offset < program_image.size()) {
- Elf64_Sym sym;
- std::memcpy(&sym, &program_image[offset], sizeof(Elf64_Sym));
- offset += sizeof(Elf64_Sym);
-
- if (sym.name >= dynamic[DT_STRSZ]) {
- break;
- }
-
- std::string name = reinterpret_cast<char*>(&program_image[dynamic[DT_STRTAB] + sym.name]);
- if (sym.value) {
- exports[name] = load_base + sym.value;
- symbols.emplace_back(std::move(name), load_base + sym.value);
- } else {
- symbols.emplace_back(std::move(name), 0);
- }
- }
-
- if (dynamic.find(DT_RELA) != dynamic.end()) {
- WriteRelocations(program_image, symbols, dynamic[DT_RELA], dynamic[DT_RELASZ], load_base);
- }
-
- if (dynamic.find(DT_JMPREL) != dynamic.end()) {
- WriteRelocations(program_image, symbols, dynamic[DT_JMPREL], dynamic[DT_PLTRELSZ],
- load_base);
- }
-}
-
-void Linker::ResolveImports() {
- // Resolve imports
- for (const auto& import : imports) {
- const auto& search = exports.find(import.first);
- if (search != exports.end()) {
- Memory::Write64(import.second.ea, search->second + import.second.addend);
- } else {
- LOG_ERROR(Loader, "Unresolved import: {}", import.first);
- }
- }
-}
-
-} // namespace Loader
diff --git a/src/core/loader/linker.h b/src/core/loader/linker.h
deleted file mode 100644
index 107625837..000000000
--- a/src/core/loader/linker.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2018 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <map>
-#include <string>
-#include "common/common_types.h"
-
-namespace Loader {
-
-class Linker {
-protected:
- struct Symbol {
- Symbol(std::string&& name, u64 value) : name(std::move(name)), value(value) {}
- std::string name;
- u64 value;
- };
-
- struct Import {
- VAddr ea;
- s64 addend;
- };
-
- void WriteRelocations(std::vector<u8>& program_image, const std::vector<Symbol>& symbols,
- u64 relocation_offset, u64 size, VAddr load_base);
- void Relocate(std::vector<u8>& program_image, u32 dynamic_section_offset, VAddr load_base);
-
- void ResolveImports();
-
- std::map<std::string, Import> imports;
- std::map<std::string, VAddr> exports;
-};
-
-} // namespace Loader
diff --git a/src/core/loader/nro.h b/src/core/loader/nro.h
index 013d629c0..85b0ed644 100644
--- a/src/core/loader/nro.h
+++ b/src/core/loader/nro.h
@@ -4,10 +4,10 @@
#pragma once
+#include <memory>
#include <string>
#include <vector>
#include "common/common_types.h"
-#include "core/loader/linker.h"
#include "core/loader/loader.h"
namespace FileSys {
@@ -21,7 +21,7 @@ class Process;
namespace Loader {
/// Loads an NRO file
-class AppLoader_NRO final : public AppLoader, Linker {
+class AppLoader_NRO final : public AppLoader {
public:
explicit AppLoader_NRO(FileSys::VirtualFile file);
~AppLoader_NRO() override;
diff --git a/src/core/loader/nso.h b/src/core/loader/nso.h
index 135b6ea5a..167c8a694 100644
--- a/src/core/loader/nso.h
+++ b/src/core/loader/nso.h
@@ -6,8 +6,8 @@
#include <optional>
#include "common/common_types.h"
+#include "common/swap.h"
#include "core/file_sys/patch_manager.h"
-#include "core/loader/linker.h"
#include "core/loader/loader.h"
namespace Kernel {
@@ -26,7 +26,7 @@ struct NSOArgumentHeader {
static_assert(sizeof(NSOArgumentHeader) == 0x20, "NSOArgumentHeader has incorrect size.");
/// Loads an NSO file
-class AppLoader_NSO final : public AppLoader, Linker {
+class AppLoader_NSO final : public AppLoader {
public:
explicit AppLoader_NSO(FileSys::VirtualFile file);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 09:28:46 +0100