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Some more work

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This commit is contained in:
Subv 2015-12-25 16:06:17 -05:00
parent e77943c7de
commit bab307b1f4
1 changed files with 70 additions and 19 deletions
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89
src/core/hle/service/ldr_ro.cpp
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@ -311,22 +311,35 @@ static void ApplyPatch(Patch* patch, u32 patch_base, u32 patch_address, u32* pat
}
static void ApplyImportPatches(CROHeader* header, u32 base) {
SegmentTableEntry* base_segment = header->GetSegmentTableEntry(header->GetImportPatchesTargetSegment());
u32 patch_base = base_segment->segment_offset + header->GetImportPatchesSegmentOffset();
u32 patch_base = 0;
if (header->GetImportPatchesTargetSegment() < header->segment_table_num) {
SegmentTableEntry* base_segment = header->GetSegmentTableEntry(header->GetImportPatchesTargetSegment());
patch_base = base_segment->segment_offset + header->GetImportPatchesSegmentOffset();
}
u32 v10 = 1;
for (int i = 0; i < header->import_patches_num; ++i) {
Patch* patch = header->GetImportPatch(i);
SegmentTableEntry* target_segment = header->GetSegmentTableEntry(patch->GetTargetSegment());
ApplyPatch(patch, patch_base, target_segment->segment_offset + patch->GetSegmentOffset());
if (v10)
patch->unk2 = 0;
v10 = patch->unk;
}
}
static void ApplyListPatches(CROHeader* header, Patch* first_patch, u32 patch_base, bool relocated = false) {
Patch* current_patch = first_patch;
do {
while (1) {
SegmentTableEntry* target_segment = header->GetSegmentTableEntry(current_patch->GetTargetSegment(), relocated);
ApplyPatch(current_patch, patch_base, target_segment->segment_offset + current_patch->GetSegmentOffset());
} while (!(current_patch++)->unk);
if (current_patch->unk)
break;
++current_patch;
}
first_patch->unk2 = 1;
}
@ -424,24 +437,59 @@ static void ApplyUnk2Patches(CROHeader* header, u32 base, bool relocated) {
// Apply the patches from the first table
for (int j = 0; j < entry->table1_num; ++j) {
Unk2TableEntry* table1_entry = entry->GetTable1Entry(j);
u32 unk1_table_entry = header->GetUnk1TableEntry(table1_entry->offset_or_index);
u32 target_segment_id = unk1_table_entry & 0xF;
u32 target_segment_offset = unk1_table_entry >> 4;
SegmentTableEntry* target_base_segment = patch_cro->GetSegmentTableEntry(target_segment_id, relocated);
u32 unk1_table_entry = patch_cro->GetUnk1TableEntry(table1_entry->offset_or_index);
u32 base_segment_id = unk1_table_entry & 0xF;
u32 base_segment_offset = unk1_table_entry >> 4;
SegmentTableEntry* base_segment = patch_cro->GetSegmentTableEntry(base_segment_id, true);
Patch* first_patch = reinterpret_cast<Patch*>(Memory::GetPointer(base + table1_entry->patches_offset));
ApplyListPatches(header, first_patch, target_base_segment->segment_offset + target_segment_offset, relocated);
ApplyListPatches(header, first_patch, base_segment->segment_offset + base_segment_offset, relocated);
}
// Apply the patches from the second table
for (int j = 0; j < entry->table2_num; ++j) {
Unk2TableEntry* table2_entry = entry->GetTable2Entry(j);
u32 target_segment_id = table2_entry->offset_or_index & 0xF;
u32 target_segment_offset = table2_entry->offset_or_index >> 4;
SegmentTableEntry* target_base_segment = patch_cro->GetSegmentTableEntry(target_segment_id, true);
u32 base_segment_id = table2_entry->offset_or_index & 0xF;
u32 base_segment_offset = table2_entry->offset_or_index >> 4;
SegmentTableEntry* base_segment = patch_cro->GetSegmentTableEntry(base_segment_id, true);
Patch* first_patch = reinterpret_cast<Patch*>(Memory::GetPointer(table2_entry->patches_offset));
ApplyListPatches(header, first_patch, target_base_segment->segment_offset + target_segment_offset, relocated);
ApplyListPatches(header, first_patch, base_segment->segment_offset + base_segment_offset, relocated);
}
}
}
static void BackApplyUnk2Patches(CROHeader* header, u32 base, CROHeader* new_header, u32 new_base) {
for (int i = 0; i < header->unk2_num; ++i) {
Unk2Patch* entry = header->GetUnk2PatchEntry(i);
char* old_cro_name = reinterpret_cast<char*>(Memory::GetPointer(entry->string_offset));
char* new_cro_name = reinterpret_cast<char*>(Memory::GetPointer(new_base + new_header->name_offset));
if (strcmp(old_cro_name, new_cro_name) != 0)
continue;
CROHeader* patch_cro = new_header;
// Apply the patches from the first table
for (int j = 0; j < entry->table1_num; ++j) {
Unk2TableEntry* table1_entry = entry->GetTable1Entry(j);
u32 unk1_table_entry = patch_cro->GetUnk1TableEntry(table1_entry->offset_or_index);
u32 base_segment_id = unk1_table_entry & 0xF;
u32 base_segment_offset = unk1_table_entry >> 4;
SegmentTableEntry* base_segment = patch_cro->GetSegmentTableEntry(base_segment_id, false);
Patch* first_patch = reinterpret_cast<Patch*>(Memory::GetPointer(base + table1_entry->patches_offset));
ApplyListPatches(header, first_patch, base_segment->segment_offset + base_segment_offset, true);
}
// Apply the patches from the second table
for (int j = 0; j < entry->table2_num; ++j) {
Unk2TableEntry* table2_entry = entry->GetTable2Entry(j);
u32 base_segment_id = table2_entry->offset_or_index & 0xF;
u32 base_segment_offset = table2_entry->offset_or_index >> 4;
SegmentTableEntry* base_segment = patch_cro->GetSegmentTableEntry(base_segment_id, false);
Patch* first_patch = reinterpret_cast<Patch*>(Memory::GetPointer(table2_entry->patches_offset));
ApplyListPatches(header, first_patch, base_segment->segment_offset + base_segment_offset, true);
}
}
}
@ -543,19 +591,18 @@ static void LoadCRO(u32 base, u8* cro, bool relocate_segments, u32 data_section0
// Retroactively apply import table 1 patches to the previous CROs
// Retroactively apply unk2 patches to the previous CROs
for (u32 cro_base : loaded_cros) {
for (auto itr = loaded_cros.rbegin(); itr != loaded_cros.rend(); ++itr) {
u32 cro_base = *itr;
CROHeader* cro_header = reinterpret_cast<CROHeader*>(Memory::GetPointer(cro_base));
ApplyImportTable1Patches(cro_header, cro_base, true);
ApplyUnk2Patches(cro_header, cro_base, true);
BackApplyUnk2Patches(cro_header, cro_base, header, base);
}
// Relocate all offsets
header->RelocateOffsets(base);
if (!crs) {
// Link the CROs
LinkCROs(header, base);
}
// Link the CROs
LinkCROs(header, base);
loaded_cros.push_back(base);
@ -659,6 +706,7 @@ static void UnloadCRO(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 address = cmd_buff[1];
CROHeader* unload = reinterpret_cast<CROHeader*>(Memory::GetPointer(address));
u32 size = unload->file_size;
for (auto itr = loaded_cros.begin(); itr != loaded_cros.end(); ++itr) {
if (*itr == address)
continue;
@ -683,6 +731,9 @@ static void UnloadCRO(Service::Interface* self) {
loaded_cros.erase(std::remove(loaded_cros.begin(), loaded_cros.end(), address), loaded_cros.end());
std::memset(Memory::GetPointer(address), 0, size);
Kernel::g_current_process->vm_manager.UnmapRange(address, size);
// TODO(Subv): Unload symbols and unmap memory
cmd_buff[1] = RESULT_SUCCESS.raw;