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LDR fixup relocation

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This commit is contained in:
wwylele 2016-08-16 12:04:37 +08:00
parent f1f940d8d7
commit 1ddbb7f6df
1 changed files with 241 additions and 241 deletions
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474
src/core/hle/service/ldr_ro.cpp
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@ -99,8 +99,8 @@ class CROHelper final {
ImportModuleTableOffset,
ImportModuleNum,
ExternalPatchTableOffset,
ExternalPatchNum,
ExternalRelocationTableOffset,
ExternalRelocationNum,
ImportNamedSymbolTableOffset,
ImportNamedSymbolNum,
ImportIndexedSymbolTableOffset,
@ -112,10 +112,10 @@ class CROHelper final {
StaticAnonymousSymbolTableOffset,
StaticAnonymousSymbolNum,
InternalPatchTableOffset,
InternalPatchNum,
StaticPatchTableOffset,
StaticPatchNum,
InternalRelocationTableOffset,
InternalRelocationNum,
StaticRelocationTableOffset,
StaticRelocationNum,
Fix0Barrier,
Fix3Barrier = ExportNamedSymbolTableOffset,
@ -188,7 +188,7 @@ class CROHelper final {
/// Identifies a named symbol imported from another module.
struct ImportNamedSymbolEntry {
u32_le name_offset; // pointing to a substring in ImportStrings
u32_le patch_batch_offset; // pointing to a patch batch in ExternalPatchTable
u32_le relocation_batch_offset; // pointing to a relocation batch in ExternalRelocationTable
static constexpr HeaderField TABLE_OFFSET_FIELD = ImportNamedSymbolTableOffset;
};
@ -197,7 +197,7 @@ class CROHelper final {
/// Identifies an indexed symbol imported from another module.
struct ImportIndexedSymbolEntry {
u32_le index; // index of an ExportIndexedSymbolEntry in the exporting module
u32_le patch_batch_offset; // pointing to a patch batch in ExternalPatchTable
u32_le relocation_batch_offset; // pointing to a relocation batch in ExternalRelocationTable
static constexpr HeaderField TABLE_OFFSET_FIELD = ImportIndexedSymbolTableOffset;
};
@ -206,7 +206,7 @@ class CROHelper final {
/// Identifies an anonymous symbol imported from another module.
struct ImportAnonymousSymbolEntry {
SegmentTag symbol_position; // in the exporting segment
u32_le patch_batch_offset; // pointing to a patch batch in ExternalPatchTable
u32_le relocation_batch_offset; // pointing to a relocation batch in ExternalRelocationTable
static constexpr HeaderField TABLE_OFFSET_FIELD = ImportAnonymousSymbolTableOffset;
};
@ -234,7 +234,7 @@ class CROHelper final {
};
ASSERT_CRO_STRUCT(ImportModuleEntry, 20);
enum class PatchType : u8 {
enum class RelocationType : u8 {
Nothing = 0,
AbsoluteAddress = 2,
RelativeAddress = 3,
@ -245,50 +245,50 @@ class CROHelper final {
AlignedRelativeAddress = 42,
};
struct PatchEntry {
SegmentTag target_position; // to self's segment as an ExternalPatchEntry; to static module segment as a StaticPatchEntry
PatchType type;
struct RelocationEntry {
SegmentTag target_position; // to self's segment as an ExternalRelocationEntry; to static module segment as a StaticRelocationEntry
RelocationType type;
u8 is_batch_end;
u8 is_batch_resolved; // set at a batch beginning if the batch is resolved
INSERT_PADDING_BYTES(1);
u32_le shift;
u32_le addend;
};
/// Identifies a normal cross-module patch.
struct ExternalPatchEntry : PatchEntry {
static constexpr HeaderField TABLE_OFFSET_FIELD = ExternalPatchTableOffset;
/// Identifies a normal cross-module relocation.
struct ExternalRelocationEntry : RelocationEntry {
static constexpr HeaderField TABLE_OFFSET_FIELD = ExternalRelocationTableOffset;
};
ASSERT_CRO_STRUCT(ExternalPatchEntry, 12);
ASSERT_CRO_STRUCT(ExternalRelocationEntry, 12);
/// Identifies a special static patch (no game is known using this).
struct StaticPatchEntry : PatchEntry {
static constexpr HeaderField TABLE_OFFSET_FIELD = StaticPatchTableOffset;
/// Identifies a special static relocation (no game is known using this).
struct StaticRelocationEntry : RelocationEntry {
static constexpr HeaderField TABLE_OFFSET_FIELD = StaticRelocationTableOffset;
};
ASSERT_CRO_STRUCT(StaticPatchEntry, 12);
ASSERT_CRO_STRUCT(StaticRelocationEntry, 12);
/// Identifies a in-module patch.
struct InternalPatchEntry {
/// Identifies a in-module relocation.
struct InternalRelocationEntry {
SegmentTag target_position; // to self's segment
PatchType type;
RelocationType type;
u8 symbol_segment;
INSERT_PADDING_BYTES(2);
u32_le shift;
u32_le addend;
static constexpr HeaderField TABLE_OFFSET_FIELD = InternalPatchTableOffset;
static constexpr HeaderField TABLE_OFFSET_FIELD = InternalRelocationTableOffset;
};
ASSERT_CRO_STRUCT(InternalPatchEntry, 12);
ASSERT_CRO_STRUCT(InternalRelocationEntry, 12);
/// Identifies a special static anonymous symbol (no game is known using this).
struct StaticAnonymousSymbolEntry {
SegmentTag symbol_position; // to self's segment
u32_le patch_batch_offset; // pointing to a patch batch in StaticPatchTable
u32_le relocation_batch_offset; // pointing to a relocation batch in StaticRelocationTable
static constexpr HeaderField TABLE_OFFSET_FIELD = StaticAnonymousSymbolTableOffset;
};
ASSERT_CRO_STRUCT(StaticAnonymousSymbolEntry, 8);
/**
* Entry size of each table, from Code to StaticPatchTable.
* Entry size of each table, from Code to StaticRelocationTable.
* Byte string contents (such as Code) are treated with entries of size 1.
* This is used for verifying the size of each table and calculating the fix end.
*/
@ -395,30 +395,30 @@ class CROHelper final {
}
/**
* Applies a patch
* @param target_address where to apply the patch
* @param patch_type the type of the patch
* @param shift address shift apply to the patched symbol
* @param symbol_address the symbol address to be patched with
* Applies a relocation
* @param target_address where to apply the relocation
* @param relocation_type the type of the relocation
* @param addend address addend applied to the relocated symbol
* @param symbol_address the symbol address to be relocated with
* @param target_future_address the future address of the target.
* Usually equals to target_address, but will be different for a target in .data segment
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ApplyPatch(VAddr target_address, PatchType patch_type, u32 shift, u32 symbol_address, u32 target_future_address) {
switch (patch_type) {
case PatchType::Nothing:
ResultCode ApplyRelocation(VAddr target_address, RelocationType relocation_type, u32 addend, u32 symbol_address, u32 target_future_address) {
switch (relocation_type) {
case RelocationType::Nothing:
break;
case PatchType::AbsoluteAddress:
case PatchType::AbsoluteAddress2:
Memory::Write32(target_address, symbol_address + shift);
case RelocationType::AbsoluteAddress:
case RelocationType::AbsoluteAddress2:
Memory::Write32(target_address, symbol_address + addend);
break;
case PatchType::RelativeAddress:
Memory::Write32(target_address, symbol_address + shift - target_future_address);
case RelocationType::RelativeAddress:
Memory::Write32(target_address, symbol_address + addend - target_future_address);
break;
case PatchType::ThumbBranch:
case PatchType::ArmBranch:
case PatchType::ModifyArmBranch:
case PatchType::AlignedRelativeAddress:
case RelocationType::ThumbBranch:
case RelocationType::ArmBranch:
case RelocationType::ModifyArmBranch:
case RelocationType::AlignedRelativeAddress:
// TODO(wwylele): implement other types
UNIMPLEMENTED();
break;
@ -429,24 +429,24 @@ class CROHelper final {
}
/**
* Clears a patch to zero
* @param target_address where to apply the patch
* @param patch_type the type of the patch
* Clears a relocation to zero
* @param target_address where to apply the relocation
* @param relocation_type the type of the relocation
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ClearPatch(VAddr target_address, PatchType patch_type) {
switch (patch_type) {
case PatchType::Nothing:
ResultCode ClearRelocation(VAddr target_address, RelocationType relocation_type) {
switch (relocation_type) {
case RelocationType::Nothing:
break;
case PatchType::AbsoluteAddress:
case PatchType::AbsoluteAddress2:
case PatchType::RelativeAddress:
case RelocationType::AbsoluteAddress:
case RelocationType::AbsoluteAddress2:
case RelocationType::RelativeAddress:
Memory::Write32(target_address, 0);
break;
case PatchType::ThumbBranch:
case PatchType::ArmBranch:
case PatchType::ModifyArmBranch:
case PatchType::AlignedRelativeAddress:
case RelocationType::ThumbBranch:
case RelocationType::ArmBranch:
case RelocationType::ModifyArmBranch:
case RelocationType::AlignedRelativeAddress:
// TODO(wwylele): implement other types
UNIMPLEMENTED();
break;
@ -457,42 +457,42 @@ class CROHelper final {
}
/**
* Applies or resets a batch of patch
* @param batch the virtual address of the first patch in the batch
* @param symbol_address the symbol address to be patched with
* Applies or resets a batch of relocations
* @param batch the virtual address of the first relocation in the batch
* @param symbol_address the symbol address to be relocated with
* @param reset false to set the batch to resolved state, true to reset the batch to unresolved state
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ApplyPatchBatch(VAddr batch, u32 symbol_address, bool reset = false) {
ResultCode ApplyRelocationBatch(VAddr batch, u32 symbol_address, bool reset = false) {
if (symbol_address == 0 && !reset)
return CROFormatError(0x10);
VAddr patch_address = batch;
VAddr relocation_address = batch;
while (true) {
PatchEntry patch;
Memory::ReadBlock(patch_address, &patch, sizeof(PatchEntry));
RelocationEntry relocation;
Memory::ReadBlock(relocation_address, &relocation, sizeof(RelocationEntry));
VAddr patch_target = SegmentTagToAddress(patch.target_position);
if (patch_target == 0) {
VAddr relocation_target = SegmentTagToAddress(relocation.target_position);
if (relocation_target == 0) {
return CROFormatError(0x12);
}
ResultCode result = ApplyPatch(patch_target, patch.type, patch.shift, symbol_address, patch_target);
ResultCode result = ApplyRelocation(relocation_target, relocation.type, relocation.addend, symbol_address, relocation_target);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation %08X", result.raw);
return result;
}
if (patch.is_batch_end)
if (relocation.is_batch_end)
break;
patch_address += sizeof(PatchEntry);
relocation_address += sizeof(RelocationEntry);
}
PatchEntry patch;
Memory::ReadBlock(batch, &patch, sizeof(PatchEntry));
patch.is_batch_resolved = reset ? 0 : 1;
Memory::WriteBlock(batch, &patch, sizeof(PatchEntry));
RelocationEntry relocation;
Memory::ReadBlock(batch, &relocation, sizeof(RelocationEntry));
relocation.is_batch_resolved = reset ? 0 : 1;
Memory::WriteBlock(batch, &relocation, sizeof(RelocationEntry));
return RESULT_SUCCESS;
}
@ -584,14 +584,14 @@ class CROHelper final {
ExportIndexedSymbolTableOffset,
ExportStringsOffset,
ImportModuleTableOffset,
ExternalPatchTableOffset,
ExternalRelocationTableOffset,
ImportNamedSymbolTableOffset,
ImportIndexedSymbolTableOffset,
ImportAnonymousSymbolTableOffset,
ImportStringsOffset,
StaticAnonymousSymbolTableOffset,
InternalPatchTableOffset,
StaticPatchTableOffset,
InternalRelocationTableOffset,
StaticRelocationTableOffset,
DataOffset,
FileSize
}};
@ -780,8 +780,8 @@ class CROHelper final {
ResultCode RebaseImportNamedSymbolTable() {
VAddr import_strings_offset = GetField(ImportStringsOffset);
VAddr import_strings_end = import_strings_offset + GetField(ImportStringsSize);
VAddr external_patch_table_offset = GetField(ExternalPatchTableOffset);
VAddr external_patch_table_end = external_patch_table_offset + GetField(ExternalPatchNum) * sizeof(ExternalPatchEntry);
VAddr external_relocation_table_offset = GetField(ExternalRelocationTableOffset);
VAddr external_relocation_table_end = external_relocation_table_offset + GetField(ExternalRelocationNum) * sizeof(ExternalRelocationEntry);
u32 num = GetField(ImportNamedSymbolNum);
for (u32 i = 0; i < num ; ++i) {
@ -796,10 +796,10 @@ class CROHelper final {
}
}
if (entry.patch_batch_offset != 0) {
entry.patch_batch_offset += module_address;
if (entry.patch_batch_offset < external_patch_table_offset
|| entry.patch_batch_offset > external_patch_table_end) {
if (entry.relocation_batch_offset != 0) {
entry.relocation_batch_offset += module_address;
if (entry.relocation_batch_offset < external_relocation_table_offset
|| entry.relocation_batch_offset > external_relocation_table_end) {
return CROFormatError(0x1B);
}
}
@ -814,18 +814,18 @@ class CROHelper final {
* @returns ResultCode RESULT_SUCCESS if all offsets are verified as valid, otherwise error code.
*/
ResultCode RebaseImportIndexedSymbolTable() {
VAddr external_patch_table_offset = GetField(ExternalPatchTableOffset);
VAddr external_patch_table_end = external_patch_table_offset + GetField(ExternalPatchNum) * sizeof(ExternalPatchEntry);
VAddr external_relocation_table_offset = GetField(ExternalRelocationTableOffset);
VAddr external_relocation_table_end = external_relocation_table_offset + GetField(ExternalRelocationNum) * sizeof(ExternalRelocationEntry);
u32 num = GetField(ImportIndexedSymbolNum);
for (u32 i = 0; i < num ; ++i) {
ImportIndexedSymbolEntry entry;
GetEntry(i, entry);
if (entry.patch_batch_offset != 0) {
entry.patch_batch_offset += module_address;
if (entry.patch_batch_offset < external_patch_table_offset
|| entry.patch_batch_offset > external_patch_table_end) {
if (entry.relocation_batch_offset != 0) {
entry.relocation_batch_offset += module_address;
if (entry.relocation_batch_offset < external_relocation_table_offset
|| entry.relocation_batch_offset > external_relocation_table_end) {
return CROFormatError(0x14);
}
}
@ -840,18 +840,18 @@ class CROHelper final {
* @returns ResultCode RESULT_SUCCESS if all offsets are verified as valid, otherwise error code.
*/
ResultCode RebaseImportAnonymousSymbolTable() {
VAddr external_patch_table_offset = GetField(ExternalPatchTableOffset);
VAddr external_patch_table_end = external_patch_table_offset + GetField(ExternalPatchNum) * sizeof(ExternalPatchEntry);
VAddr external_relocation_table_offset = GetField(ExternalRelocationTableOffset);
VAddr external_relocation_table_end = external_relocation_table_offset + GetField(ExternalRelocationNum) * sizeof(ExternalRelocationEntry);
u32 num = GetField(ImportAnonymousSymbolNum);
for (u32 i = 0; i < num ; ++i) {
ImportAnonymousSymbolEntry entry;
GetEntry(i, entry);
if (entry.patch_batch_offset != 0) {
entry.patch_batch_offset += module_address;
if (entry.patch_batch_offset < external_patch_table_offset
|| entry.patch_batch_offset > external_patch_table_end) {
if (entry.relocation_batch_offset != 0) {
entry.relocation_batch_offset += module_address;
if (entry.relocation_batch_offset < external_relocation_table_offset
|| entry.relocation_batch_offset > external_relocation_table_end) {
return CROFormatError(0x17);
}
}
@ -863,7 +863,7 @@ class CROHelper final {
/**
* Gets the address of OnUnresolved function in this module.
* Used as the applied symbol for reset patch.
* Used as the applied symbol for reset relocation.
* @returns the virtual address of OnUnresolved. 0 if not provided.
*/
VAddr GetOnUnresolvedAddress() {
@ -871,79 +871,79 @@ class CROHelper final {
}
/**
* Resets all external patches to unresolved state.
* Resets all external relocations to unresolved state.
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ResetExternalPatches() {
ResultCode ResetExternalRelocations() {
u32 unresolved_symbol = GetOnUnresolvedAddress();
u32 external_patch_num = GetField(ExternalPatchNum);
ExternalPatchEntry patch;
u32 external_relocation_num = GetField(ExternalRelocationNum);
ExternalRelocationEntry relocation;
// Verifies that the last patch is the end of a batch
GetEntry(external_patch_num - 1, patch);
if (!patch.is_batch_end) {
// Verifies that the last relocation is the end of a batch
GetEntry(external_relocation_num - 1, relocation);
if (!relocation.is_batch_end) {
return CROFormatError(0x12);
}
bool batch_begin = true;
for (u32 i = 0; i < external_patch_num; ++i) {
GetEntry(i, patch);
VAddr patch_target = SegmentTagToAddress(patch.target_position);
for (u32 i = 0; i < external_relocation_num; ++i) {
GetEntry(i, relocation);
VAddr relocation_target = SegmentTagToAddress(relocation.target_position);
if (patch_target == 0) {
if (relocation_target == 0) {
return CROFormatError(0x12);
}
ResultCode result = ApplyPatch(patch_target, patch.type, patch.shift, unresolved_symbol, patch_target);
ResultCode result = ApplyRelocation(relocation_target, relocation.type, relocation.addend, unresolved_symbol, relocation_target);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation %08X", result.raw);
return result;
}
if (batch_begin) {
// resets to unresolved state
patch.is_batch_resolved = 0;
SetEntry(i, patch);
relocation.is_batch_resolved = 0;
SetEntry(i, relocation);
}
// if current is an end, then the next is a beginning
batch_begin = patch.is_batch_end != 0;
batch_begin = relocation.is_batch_end != 0;
}
return RESULT_SUCCESS;
}
/**
* Clears all external patches to zero.
* Clears all external relocations to zero.
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ClearExternalPatches() {
u32 external_patch_num = GetField(ExternalPatchNum);
ExternalPatchEntry patch;
ResultCode ClearExternalRelocations() {
u32 external_relocation_num = GetField(ExternalRelocationNum);
ExternalRelocationEntry relocation;
bool batch_begin = true;
for (u32 i = 0; i < external_patch_num; ++i) {
GetEntry(i, patch);
VAddr patch_target = SegmentTagToAddress(patch.target_position);
for (u32 i = 0; i < external_relocation_num; ++i) {
GetEntry(i, relocation);
VAddr relocation_target = SegmentTagToAddress(relocation.target_position);
if (patch_target == 0) {
if (relocation_target == 0) {
return CROFormatError(0x12);
}
ResultCode result = ClearPatch(patch_target, patch.type);
ResultCode result = ClearRelocation(relocation_target, relocation.type);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error clearing patch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error clearing relocation %08X", result.raw);
return result;
}
if (batch_begin) {
// resets to unresolved state
patch.is_batch_resolved = 0;
SetEntry(i, patch);
relocation.is_batch_resolved = 0;
SetEntry(i, relocation);
}
// if current is an end, then the next is a beginning
batch_begin = patch.is_batch_end != 0;
batch_begin = relocation.is_batch_end != 0;
}
return RESULT_SUCCESS;
@ -955,8 +955,8 @@ class CROHelper final {
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ApplyStaticAnonymousSymbolToCRS(VAddr crs_address) {
VAddr static_patch_table_offset = GetField(StaticPatchTableOffset);
VAddr static_patch_table_end = static_patch_table_offset + GetField(StaticPatchNum) * sizeof(StaticPatchEntry);
VAddr static_relocation_table_offset = GetField(StaticRelocationTableOffset);
VAddr static_relocation_table_end = static_relocation_table_offset + GetField(StaticRelocationNum) * sizeof(StaticRelocationEntry);
CROHelper crs(crs_address);
u32 offset_export_num = GetField(StaticAnonymousSymbolNum);
@ -964,18 +964,18 @@ class CROHelper final {
for (u32 i = 0; i < offset_export_num; ++i) {
StaticAnonymousSymbolEntry entry;
GetEntry(i, entry);
u32 batch_address = entry.patch_batch_offset + module_address;
u32 batch_address = entry.relocation_batch_offset + module_address;
if (batch_address < static_patch_table_offset
|| batch_address > static_patch_table_end) {
if (batch_address < static_relocation_table_offset
|| batch_address > static_relocation_table_end) {
return CROFormatError(0x16);
}
u32 symbol_address = SegmentTagToAddress(entry.symbol_position);
LOG_TRACE(Service_LDR, "CRO \"%s\" exports 0x%08X to the static module", ModuleName().data(), symbol_address);
ResultCode result = crs.ApplyPatchBatch(batch_address, symbol_address);
ResultCode result = crs.ApplyRelocationBatch(batch_address, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -983,42 +983,42 @@ class CROHelper final {
}
/**
* Applies all internal patches to the module itself.
* Applies all internal relocations to the module itself.
* @param old_data_segment_address the virtual address of data segment in CRO buffer
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ApplyInternalPatches(u32 old_data_segment_address) {
ResultCode ApplyInternalRelocations(u32 old_data_segment_address) {
u32 segment_num = GetField(SegmentNum);
u32 internal_patch_num = GetField(InternalPatchNum);
for (u32 i = 0; i < internal_patch_num; ++i) {
InternalPatchEntry patch;
GetEntry(i, patch);
VAddr target_addressB = SegmentTagToAddress(patch.target_position);
u32 internal_relocation_num = GetField(InternalRelocationNum);
for (u32 i = 0; i < internal_relocation_num; ++i) {
InternalRelocationEntry relocation;
GetEntry(i, relocation);
VAddr target_addressB = SegmentTagToAddress(relocation.target_position);
if (target_addressB == 0) {
return CROFormatError(0x15);
}
VAddr target_address;
SegmentEntry target_segment;
GetEntry(patch.target_position.segment_index, target_segment);
GetEntry(relocation.target_position.segment_index, target_segment);
if (target_segment.type == SegmentType::Data) {
// If the patch is to the .data segment, we need to patch it in the old buffer
target_address = old_data_segment_address + patch.target_position.offset_into_segment;
// If the relocation is to the .data segment, we need to relocate it in the old buffer
target_address = old_data_segment_address + relocation.target_position.offset_into_segment;
} else {
target_address = target_addressB;
}
if (patch.symbol_segment >= segment_num) {
if (relocation.symbol_segment >= segment_num) {
return CROFormatError(0x15);
}
SegmentEntry symbol_segment;
GetEntry(patch.symbol_segment, symbol_segment);
LOG_TRACE(Service_LDR, "Internally patches 0x%08X with 0x%08X", target_address, symbol_segment.offset);
ResultCode result = ApplyPatch(target_address, patch.type, patch.shift, symbol_segment.offset, target_addressB);
GetEntry(relocation.symbol_segment, symbol_segment);
LOG_TRACE(Service_LDR, "Internally relocates 0x%08X with 0x%08X", target_address, symbol_segment.offset);
ResultCode result = ApplyRelocation(target_address, relocation.type, relocation.addend, symbol_segment.offset, target_addressB);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation %08X", result.raw);
return result;
}
}
@ -1026,23 +1026,23 @@ class CROHelper final {
}
/**
* Clears all internal patches to zero.
* Clears all internal relocations to zero.
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ClearInternalPatches() {
u32 internal_patch_num = GetField(InternalPatchNum);
for (u32 i = 0; i < internal_patch_num; ++i) {
InternalPatchEntry patch;
GetEntry(i, patch);
VAddr target_address = SegmentTagToAddress(patch.target_position);
ResultCode ClearInternalRelocations() {
u32 internal_relocation_num = GetField(InternalRelocationNum);
for (u32 i = 0; i < internal_relocation_num; ++i) {
InternalRelocationEntry relocation;
GetEntry(i, relocation);
VAddr target_address = SegmentTagToAddress(relocation.target_position);
if (target_address == 0) {
return CROFormatError(0x15);
}
ResultCode result = ClearPatch(target_address, patch.type);
ResultCode result = ClearRelocation(target_address, relocation.type);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error clearing patch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error clearing relocation %08X", result.raw);
return result;
}
}
@ -1056,8 +1056,8 @@ class CROHelper final {
ImportAnonymousSymbolEntry entry;
GetEntry(i, entry);
if (entry.patch_batch_offset != 0) {
entry.patch_batch_offset -= module_address;
if (entry.relocation_batch_offset != 0) {
entry.relocation_batch_offset -= module_address;
}
SetEntry(i, entry);
@ -1071,8 +1071,8 @@ class CROHelper final {
ImportIndexedSymbolEntry entry;
GetEntry(i, entry);
if (entry.patch_batch_offset != 0) {
entry.patch_batch_offset -= module_address;
if (entry.relocation_batch_offset != 0) {
entry.relocation_batch_offset -= module_address;
}
SetEntry(i, entry);
@ -1090,8 +1090,8 @@ class CROHelper final {
entry.name_offset -= module_address;
}
if (entry.patch_batch_offset) {
entry.patch_batch_offset -= module_address;
if (entry.relocation_batch_offset) {
entry.relocation_batch_offset -= module_address;
}
SetEntry(i, entry);
@ -1178,11 +1178,11 @@ class CROHelper final {
for (u32 i = 0; i < symbol_import_num; ++i) {
ImportNamedSymbolEntry entry;
GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
if (!patch_entry.is_batch_resolved) {
if (!relocation_entry.is_batch_resolved) {
ResultCode result = ForEachAutoLinkCRO(crs_address, [&](CROHelper source) -> ResultVal<bool> {
std::string symbol_name = Memory::ReadCString(entry.name_offset, import_strings_size);
u32 symbol_address = source.FindExportNamedSymbol(symbol_name);
@ -1191,9 +1191,9 @@ class CROHelper final {
LOG_TRACE(Service_LDR, "CRO \"%s\" imports \"%s\" from \"%s\"",
ModuleName().data(), symbol_name.data(), source.ModuleName().data());
ResultCode result = ApplyPatchBatch(patch_addr, symbol_address);
ResultCode result = ApplyRelocationBatch(relocation_addr, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
@ -1221,13 +1221,13 @@ class CROHelper final {
for (u32 i = 0; i < symbol_import_num; ++i) {
ImportNamedSymbolEntry entry;
GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
ResultCode result = ApplyPatchBatch(patch_addr, unresolved_symbol, true);
ResultCode result = ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error reseting patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error reseting relocation batch %08X", result.raw);
return result;
}
@ -1246,13 +1246,13 @@ class CROHelper final {
for (u32 i = 0; i < import_num; ++i) {
ImportIndexedSymbolEntry entry;
GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
ResultCode result = ApplyPatchBatch(patch_addr, unresolved_symbol, true);
ResultCode result = ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error reseting patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error reseting relocation batch %08X", result.raw);
return result;
}
}
@ -1270,13 +1270,13 @@ class CROHelper final {
for (u32 i = 0; i < import_num; ++i) {
ImportAnonymousSymbolEntry entry;
GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
ResultCode result = ApplyPatchBatch(patch_addr, unresolved_symbol, true);
ResultCode result = ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error reseting patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error reseting relocation batch %08X", result.raw);
return result;
}
}
@ -1308,9 +1308,9 @@ class CROHelper final {
source.GetEntry(im.index, ex);
u32 symbol_address = source.SegmentTagToAddress(ex.symbol_position);
LOG_TRACE(Service_LDR, " Imports 0x%08X", symbol_address);
ResultCode result = ApplyPatchBatch(im.patch_batch_offset, symbol_address);
ResultCode result = ApplyRelocationBatch(im.relocation_batch_offset, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1321,9 +1321,9 @@ class CROHelper final {
entry.GetImportAnonymousSymbolEntry(j, im);
u32 symbol_address = source.SegmentTagToAddress(im.symbol_position);
LOG_TRACE(Service_LDR, " Imports 0x%08X", symbol_address);
ResultCode result = ApplyPatchBatch(im.patch_batch_offset, symbol_address);
ResultCode result = ApplyRelocationBatch(im.relocation_batch_offset, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1351,18 +1351,18 @@ class CROHelper final {
for (u32 i = 0; i < target_symbol_import_num; ++i) {
ImportNamedSymbolEntry entry;
target.GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
if (!patch_entry.is_batch_resolved) {
if (!relocation_entry.is_batch_resolved) {
std::string symbol_name = Memory::ReadCString(entry.name_offset, target_import_strings_size);
u32 symbol_address = FindExportNamedSymbol(symbol_name);
if (symbol_address != 0) {
LOG_TRACE(Service_LDR, " exports symbol \"%s\"", symbol_name.data());
ResultCode result = target.ApplyPatchBatch(patch_addr, symbol_address);
ResultCode result = target.ApplyRelocationBatch(relocation_addr, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1385,18 +1385,18 @@ class CROHelper final {
for (u32 i = 0; i < target_symbol_import_num; ++i) {
ImportNamedSymbolEntry entry;
target.GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
if (patch_entry.is_batch_resolved) {
if (relocation_entry.is_batch_resolved) {
std::string symbol_name = Memory::ReadCString(entry.name_offset, target_import_strings_size);
u32 symbol_address = FindExportNamedSymbol(symbol_name);
if (symbol_address != 0) {
LOG_TRACE(Service_LDR, " unexports symbol \"%s\"", symbol_name.data());
ResultCode result = target.ApplyPatchBatch(patch_addr, unresolved_symbol, true);
ResultCode result = target.ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1430,9 +1430,9 @@ class CROHelper final {
GetEntry(im.index, ex);
u32 symbol_address = SegmentTagToAddress(ex.symbol_position);
LOG_TRACE(Service_LDR, " exports symbol 0x%08X", symbol_address);
ResultCode result = target.ApplyPatchBatch(im.patch_batch_offset, symbol_address);
ResultCode result = target.ApplyRelocationBatch(im.relocation_batch_offset, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1444,9 +1444,9 @@ class CROHelper final {
entry.GetImportAnonymousSymbolEntry(j, im);
u32 symbol_address = SegmentTagToAddress(im.symbol_position);
LOG_TRACE(Service_LDR, " exports symbol 0x%08X", symbol_address);
ResultCode result = target.ApplyPatchBatch(im.patch_batch_offset, symbol_address);
ResultCode result = target.ApplyRelocationBatch(im.relocation_batch_offset, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1478,9 +1478,9 @@ class CROHelper final {
for (u32 j = 0; j < entry.import_indexed_symbol_num; ++j) {
ImportIndexedSymbolEntry im;
entry.GetImportIndexedSymbolEntry(j, im);
ResultCode result = target.ApplyPatchBatch(im.patch_batch_offset, unresolved_symbol, true);
ResultCode result = target.ApplyRelocationBatch(im.relocation_batch_offset, unresolved_symbol, true);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1490,9 +1490,9 @@ class CROHelper final {
for (u32 j = 0; j < entry.import_anonymous_symbol_num; ++j) {
ImportAnonymousSymbolEntry im;
entry.GetImportAnonymousSymbolEntry(j, im);
ResultCode result = target.ApplyPatchBatch(im.patch_batch_offset, unresolved_symbol, true);
ResultCode result = target.ApplyRelocationBatch(im.relocation_batch_offset, unresolved_symbol, true);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
}
@ -1506,15 +1506,15 @@ class CROHelper final {
* @param crs_address the virtual address of the static module.
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ApplyExitPatches(VAddr crs_address) {
ResultCode ApplyExitRelocations(VAddr crs_address) {
u32 import_strings_size = GetField(ImportStringsSize);
u32 symbol_import_num = GetField(ImportNamedSymbolNum);
for (u32 i = 0; i < symbol_import_num; ++i) {
ImportNamedSymbolEntry entry;
GetEntry(i, entry);
VAddr patch_addr = entry.patch_batch_offset;
ExternalPatchEntry patch_entry;
Memory::ReadBlock(patch_addr, &patch_entry, sizeof(ExternalPatchEntry));
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
if (Memory::ReadCString(entry.name_offset, import_strings_size) == "__aeabi_atexit"){
ResultCode result = ForEachAutoLinkCRO(crs_address, [&](CROHelper source) -> ResultVal<bool> {
@ -1524,9 +1524,9 @@ class CROHelper final {
LOG_DEBUG(Service_LDR, "CRO \"%s\" import exit function from \"%s\"",
ModuleName().data(), source.ModuleName().data());
ResultCode result = ApplyPatchBatch(patch_addr, symbol_address);
ResultCode result = ApplyRelocationBatch(relocation_addr, symbol_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying patch batch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying relocation batch %08X", result.raw);
return result;
}
@ -1536,7 +1536,7 @@ class CROHelper final {
return MakeResult<bool>(true);
});
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying exit patch %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying exit relocation %08X", result.raw);
return result;
}
}
@ -1618,9 +1618,9 @@ public:
return result;
}
result = ResetExternalPatches();
result = ResetExternalRelocations();
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error resetting all external patches %08X", result.raw);
LOG_ERROR(Service_LDR, "Error resetting all external relocations %08X", result.raw);
return result;
}
@ -1656,16 +1656,16 @@ public:
}
}
result = ApplyInternalPatches(prev_data_segment_address);
result = ApplyInternalRelocations(prev_data_segment_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying internal patches %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying internal relocations %08X", result.raw);
return result;
}
if (!is_crs) {
result = ApplyExitPatches(crs_address);
result = ApplyExitRelocations(crs_address);
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error applying exit patches %08X", result.raw);
LOG_ERROR(Service_LDR, "Error applying exit relocations %08X", result.raw);
return result;
}
}
@ -1720,10 +1720,10 @@ public:
if (link_on_load_bug_fix) {
// this is a bug fix introduced by 7.2.0-17's LoadCRO_New
// The bug itself is:
// If a patch target is in .data segment, it will patch to the
// If a relocation target is in .data segment, it will relocate to the
// user-specified buffer. But if this is linking during loading,
// the .data segment hasn't been tranfer from CRO to the buffer,
// thus the patch will be overwritten by data transfer.
// thus the relocation will be overwritten by data transfer.
// To fix this bug, we need temporarily restore the old .data segment
// offset and apply imported symbols.
@ -1835,19 +1835,19 @@ public:
}
/**
* Clears all patches to zero.
* Clears all relocations to zero.
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
ResultCode ClearPatches() {
ResultCode result = ClearExternalPatches();
ResultCode ClearRelocations() {
ResultCode result = ClearExternalRelocations();
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error clearing external patches %08X", result.raw);
LOG_ERROR(Service_LDR, "Error clearing external relocations %08X", result.raw);
return result;
}
result = ClearInternalPatches();
result = ClearInternalRelocations();
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error clearing internal patches %08X", result.raw);
LOG_ERROR(Service_LDR, "Error clearing internal relocations %08X", result.raw);
return result;
}
return RESULT_SUCCESS;
@ -2037,14 +2037,14 @@ const std::array<int, 17> CROHelper::ENTRY_SIZE {{
1, // export strings
sizeof(ExportTreeEntry),
sizeof(ImportModuleEntry),
sizeof(ExternalPatchEntry),
sizeof(ExternalRelocationEntry),
sizeof(ImportNamedSymbolEntry),
sizeof(ImportIndexedSymbolEntry),
sizeof(ImportAnonymousSymbolEntry),
1, // import strings
sizeof(StaticAnonymousSymbolEntry),
sizeof(InternalPatchEntry),
sizeof(StaticPatchEntry)
sizeof(InternalRelocationEntry),
sizeof(StaticRelocationEntry)
}};
const std::array<CROHelper::HeaderField, 4> CROHelper::FIX_BARRIERS {{
@ -2576,12 +2576,12 @@ static void UnloadCRO(Service::Interface* self) {
return;
}
// If the module is not fixed, clears all external/internal patches
// If the module is not fixed, clears all external/internal relocations
// to restore the state before loading, so that it can be loaded again(?)
if (!cro.IsFixed()) {
result = cro.ClearPatches();
result = cro.ClearRelocations();
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error clearing patches %08X", result.raw);
LOG_ERROR(Service_LDR, "Error clearing relocations %08X", result.raw);
cmd_buff[1] = result.raw;
return;
}