suyu/src/core/file_sys/program_metadata.cpp
Markus Wick 6755025310 Fix GCC undefined behavior sanitizer.
* Wrong alignment in u64 LOG_DEBUG -> memcpy.
* Huge shift exponent in stride calculation for linear buffer, unused result -> skipped.
* Large shift in buffer cache if word = 0, skip checking for set bits.

Non of those were critical, so this should not change any behavior.
At least with the assumption, that the last one used masking behavior, which always yield continuous_bits = 0.
2021-06-10 21:07:27 +02:00

162 lines
6.4 KiB
C++

// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstddef>
#include <vector>
#include "common/logging/log.h"
#include "core/file_sys/program_metadata.h"
#include "core/file_sys/vfs.h"
#include "core/loader/loader.h"
namespace FileSys {
ProgramMetadata::ProgramMetadata() = default;
ProgramMetadata::~ProgramMetadata() = default;
Loader::ResultStatus ProgramMetadata::Load(VirtualFile file) {
const std::size_t total_size = file->GetSize();
if (total_size < sizeof(Header)) {
return Loader::ResultStatus::ErrorBadNPDMHeader;
}
if (sizeof(Header) != file->ReadObject(&npdm_header)) {
return Loader::ResultStatus::ErrorBadNPDMHeader;
}
if (sizeof(AcidHeader) != file->ReadObject(&acid_header, npdm_header.acid_offset)) {
return Loader::ResultStatus::ErrorBadACIDHeader;
}
if (sizeof(AciHeader) != file->ReadObject(&aci_header, npdm_header.aci_offset)) {
return Loader::ResultStatus::ErrorBadACIHeader;
}
if (sizeof(FileAccessControl) != file->ReadObject(&acid_file_access, acid_header.fac_offset)) {
return Loader::ResultStatus::ErrorBadFileAccessControl;
}
if (sizeof(FileAccessHeader) != file->ReadObject(&aci_file_access, aci_header.fah_offset)) {
return Loader::ResultStatus::ErrorBadFileAccessHeader;
}
aci_kernel_capabilities.resize(aci_header.kac_size / sizeof(u32));
const u64 read_size = aci_header.kac_size;
const u64 read_offset = npdm_header.aci_offset + aci_header.kac_offset;
if (file->ReadBytes(aci_kernel_capabilities.data(), read_size, read_offset) != read_size) {
return Loader::ResultStatus::ErrorBadKernelCapabilityDescriptors;
}
return Loader::ResultStatus::Success;
}
/*static*/ ProgramMetadata ProgramMetadata::GetDefault() {
ProgramMetadata result;
result.LoadManual(
true /*is_64_bit*/, FileSys::ProgramAddressSpaceType::Is39Bit /*address_space*/,
0x2c /*main_thread_prio*/, 0 /*main_thread_core*/, 0x00100000 /*main_thread_stack_size*/,
0 /*title_id*/, 0xFFFFFFFFFFFFFFFF /*filesystem_permissions*/,
0x1FE00000 /*system_resource_size*/, {} /*capabilities*/);
return result;
}
void ProgramMetadata::LoadManual(bool is_64_bit, ProgramAddressSpaceType address_space,
s32 main_thread_prio, u32 main_thread_core,
u32 main_thread_stack_size, u64 title_id,
u64 filesystem_permissions, u32 system_resource_size,
KernelCapabilityDescriptors capabilities) {
npdm_header.has_64_bit_instructions.Assign(is_64_bit);
npdm_header.address_space_type.Assign(address_space);
npdm_header.main_thread_priority = static_cast<u8>(main_thread_prio);
npdm_header.main_thread_cpu = static_cast<u8>(main_thread_core);
npdm_header.main_stack_size = main_thread_stack_size;
aci_header.title_id = title_id;
aci_file_access.permissions = filesystem_permissions;
npdm_header.system_resource_size = system_resource_size;
aci_kernel_capabilities = std ::move(capabilities);
}
bool ProgramMetadata::Is64BitProgram() const {
return npdm_header.has_64_bit_instructions;
}
ProgramAddressSpaceType ProgramMetadata::GetAddressSpaceType() const {
return npdm_header.address_space_type;
}
u8 ProgramMetadata::GetMainThreadPriority() const {
return npdm_header.main_thread_priority;
}
u8 ProgramMetadata::GetMainThreadCore() const {
return npdm_header.main_thread_cpu;
}
u32 ProgramMetadata::GetMainThreadStackSize() const {
return npdm_header.main_stack_size;
}
u64 ProgramMetadata::GetTitleID() const {
return aci_header.title_id;
}
u64 ProgramMetadata::GetFilesystemPermissions() const {
return aci_file_access.permissions;
}
u32 ProgramMetadata::GetSystemResourceSize() const {
return npdm_header.system_resource_size;
}
const ProgramMetadata::KernelCapabilityDescriptors& ProgramMetadata::GetKernelCapabilities() const {
return aci_kernel_capabilities;
}
void ProgramMetadata::Print() const {
LOG_DEBUG(Service_FS, "Magic: {:.4}", npdm_header.magic.data());
LOG_DEBUG(Service_FS, "Main thread priority: 0x{:02X}", npdm_header.main_thread_priority);
LOG_DEBUG(Service_FS, "Main thread core: {}", npdm_header.main_thread_cpu);
LOG_DEBUG(Service_FS, "Main thread stack size: 0x{:X} bytes", npdm_header.main_stack_size);
LOG_DEBUG(Service_FS, "Process category: {}", npdm_header.process_category);
LOG_DEBUG(Service_FS, "Flags: 0x{:02X}", npdm_header.flags);
LOG_DEBUG(Service_FS, " > 64-bit instructions: {}",
npdm_header.has_64_bit_instructions ? "YES" : "NO");
const char* address_space = "Unknown";
switch (npdm_header.address_space_type) {
case ProgramAddressSpaceType::Is36Bit:
address_space = "64-bit (36-bit address space)";
break;
case ProgramAddressSpaceType::Is39Bit:
address_space = "64-bit (39-bit address space)";
break;
case ProgramAddressSpaceType::Is32Bit:
address_space = "32-bit";
break;
case ProgramAddressSpaceType::Is32BitNoMap:
address_space = "32-bit (no map region)";
break;
}
LOG_DEBUG(Service_FS, " > Address space: {}\n", address_space);
// Begin ACID printing (potential perms, signed)
LOG_DEBUG(Service_FS, "Magic: {:.4}", acid_header.magic.data());
LOG_DEBUG(Service_FS, "Flags: 0x{:02X}", acid_header.flags);
LOG_DEBUG(Service_FS, " > Is Retail: {}", acid_header.is_retail ? "YES" : "NO");
LOG_DEBUG(Service_FS, "Title ID Min: 0x{:016X}", acid_header.title_id_min);
LOG_DEBUG(Service_FS, "Title ID Max: 0x{:016X}", acid_header.title_id_max);
u64_le permissions_l; // local copy to fix alignment error
std::memcpy(&permissions_l, &acid_file_access.permissions, sizeof(permissions_l));
LOG_DEBUG(Service_FS, "Filesystem Access: 0x{:016X}\n", permissions_l);
// Begin ACI0 printing (actual perms, unsigned)
LOG_DEBUG(Service_FS, "Magic: {:.4}", aci_header.magic.data());
LOG_DEBUG(Service_FS, "Title ID: 0x{:016X}", aci_header.title_id);
LOG_DEBUG(Service_FS, "Filesystem Access: 0x{:016X}\n", aci_file_access.permissions);
}
} // namespace FileSys