mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 09:56:40 +00:00
422 lines
18 KiB
C++
422 lines
18 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "ldr_capabilities.hpp"
|
|
|
|
namespace ams::ldr {
|
|
|
|
namespace {
|
|
|
|
/* Types. */
|
|
enum class CapabilityId {
|
|
KernelFlags = 3,
|
|
SyscallMask = 4,
|
|
MapRange = 6,
|
|
MapPage = 7,
|
|
MapRegion = 10,
|
|
InterruptPair = 11,
|
|
ApplicationType = 13,
|
|
KernelVersion = 14,
|
|
HandleTable = 15,
|
|
DebugFlags = 16,
|
|
|
|
Empty = 32,
|
|
};
|
|
|
|
template<size_t Index, size_t Count, typename T = u32>
|
|
using CapabilityField = util::BitPack32::Field<Index, Count, T>;
|
|
|
|
#define DEFINE_CAPABILITY_FIELD(name, prev, ...) \
|
|
using name = CapabilityField<prev::Next, __VA_ARGS__>; \
|
|
constexpr ALWAYS_INLINE typename name::Type Get##name() const { return this->Get<name>(); }
|
|
|
|
constexpr ALWAYS_INLINE CapabilityId GetCapabilityId(util::BitPack32 cap) {
|
|
return static_cast<CapabilityId>(util::CountTrailingZeros<u32>(~cap.value));
|
|
}
|
|
|
|
constexpr inline util::BitPack32 EmptyCapability = {~u32{}};
|
|
static_assert(GetCapabilityId(EmptyCapability) == CapabilityId::Empty);
|
|
|
|
#define CAPABILITY_CLASS_NAME(id) Capability##id
|
|
|
|
#define DEFINE_CAPABILITY_CLASS(id, member_functions) \
|
|
class CAPABILITY_CLASS_NAME(id) { \
|
|
public: \
|
|
static constexpr CapabilityId Id = CapabilityId::id; \
|
|
using IdBits = CapabilityField<0, static_cast<size_t>(Id) + 1>; \
|
|
static constexpr u32 IdBitsValue = (static_cast<u32>(1) << static_cast<size_t>(Id)) - 1; \
|
|
private: \
|
|
util::BitPack32 m_value; \
|
|
private: \
|
|
template<typename FieldType> \
|
|
constexpr ALWAYS_INLINE typename FieldType::Type Get() const { return m_value.Get<FieldType>(); } \
|
|
template<typename FieldType> \
|
|
constexpr ALWAYS_INLINE void Set(typename FieldType::Type fv) { m_value.Set<FieldType>(fv); } \
|
|
constexpr ALWAYS_INLINE u32 GetValue() const { return m_value.value; } \
|
|
public: \
|
|
constexpr ALWAYS_INLINE CAPABILITY_CLASS_NAME(id)(util::BitPack32 v) : m_value{v} { /* ... */ } \
|
|
\
|
|
static constexpr CAPABILITY_CLASS_NAME(id) Decode(util::BitPack32 v) { return CAPABILITY_CLASS_NAME(id)(v); } \
|
|
\
|
|
member_functions \
|
|
}; \
|
|
static_assert(std::is_trivially_destructible<CAPABILITY_CLASS_NAME(id)>::value)
|
|
|
|
/* Class definitions. */
|
|
DEFINE_CAPABILITY_CLASS(KernelFlags,
|
|
DEFINE_CAPABILITY_FIELD(MaximumThreadPriority, IdBits, 6);
|
|
DEFINE_CAPABILITY_FIELD(MinimumThreadPriority, MaximumThreadPriority, 6);
|
|
DEFINE_CAPABILITY_FIELD(MinimumCoreId, MinimumThreadPriority, 8);
|
|
DEFINE_CAPABILITY_FIELD(MaximumCoreId, MinimumCoreId, 8);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
if (this->GetMinimumThreadPriority() < restriction.GetMinimumThreadPriority() ||
|
|
this->GetMaximumThreadPriority() > restriction.GetMaximumThreadPriority() ||
|
|
this->GetMinimumThreadPriority() > this->GetMaximumThreadPriority()) {
|
|
return false;
|
|
}
|
|
|
|
if (this->GetMinimumCoreId() < restriction.GetMinimumCoreId() ||
|
|
this->GetMaximumCoreId() > restriction.GetMaximumCoreId() ||
|
|
this->GetMinimumCoreId() > this->GetMaximumCoreId()) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(SyscallMask,
|
|
DEFINE_CAPABILITY_FIELD(Mask, IdBits, 24);
|
|
DEFINE_CAPABILITY_FIELD(Index, Mask, 3);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
if (this->GetIndex() == restriction.GetIndex() && this->GetMask() == restriction.GetMask()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(MapRange,
|
|
DEFINE_CAPABILITY_FIELD(AddressSize, IdBits, 24);
|
|
DEFINE_CAPABILITY_FIELD(Flag, AddressSize, 1, bool);
|
|
static constexpr size_t SizeMax = 0x100000;
|
|
|
|
bool IsValid(const util::BitPack32 next_cap, const util::BitPack32 *kac, size_t kac_count) const {
|
|
if (GetCapabilityId(next_cap) != Id) {
|
|
return false;
|
|
}
|
|
|
|
const auto next = Decode(next_cap);
|
|
const u32 start = this->GetAddressSize();
|
|
const u32 size = next.GetAddressSize();
|
|
const u32 end = start + size;
|
|
if (size >= SizeMax) {
|
|
return false;
|
|
}
|
|
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i++]);
|
|
if (i >= kac_count || GetCapabilityId(kac[i]) != Id) {
|
|
return false;
|
|
}
|
|
const auto restriction_next = Decode(kac[i]);
|
|
const u32 restriction_start = restriction.GetAddressSize();
|
|
const u32 restriction_size = restriction_next.GetAddressSize();
|
|
const u32 restriction_end = restriction_start + restriction_size;
|
|
|
|
if (restriction_size >= SizeMax) {
|
|
continue;
|
|
}
|
|
|
|
if (this->GetFlag() == restriction.GetFlag() && next.GetFlag() == restriction_next.GetFlag()) {
|
|
if (restriction_start <= start && start <= restriction_end && end <= restriction_end) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(MapPage,
|
|
DEFINE_CAPABILITY_FIELD(Address, IdBits, 24);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
if (this->GetValue() == restriction.GetValue()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
enum class MemoryRegionType : u32 {
|
|
None = 0,
|
|
KernelTraceBuffer = 1,
|
|
OnMemoryBootImage = 2,
|
|
DTB = 3,
|
|
};
|
|
|
|
DEFINE_CAPABILITY_CLASS(MapRegion,
|
|
DEFINE_CAPABILITY_FIELD(Region0, IdBits, 6, MemoryRegionType);
|
|
DEFINE_CAPABILITY_FIELD(ReadOnly0, Region0, 1, bool);
|
|
DEFINE_CAPABILITY_FIELD(Region1, ReadOnly0, 6, MemoryRegionType);
|
|
DEFINE_CAPABILITY_FIELD(ReadOnly1, Region1, 1, bool);
|
|
DEFINE_CAPABILITY_FIELD(Region2, ReadOnly1, 6, MemoryRegionType);
|
|
DEFINE_CAPABILITY_FIELD(ReadOnly2, Region2, 1, bool);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
if (this->GetValue() == restriction.GetValue()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(InterruptPair,
|
|
DEFINE_CAPABILITY_FIELD(InterruptId0, IdBits, 10);
|
|
DEFINE_CAPABILITY_FIELD(InterruptId1, InterruptId0, 10);
|
|
static constexpr u32 EmptyInterruptId = 0x3FF;
|
|
|
|
bool IsSingleIdValid(const u32 id, const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
if (restriction.GetInterruptId0() == EmptyInterruptId && restriction.GetInterruptId1() == EmptyInterruptId) {
|
|
return true;
|
|
}
|
|
|
|
if (restriction.GetInterruptId0() == id || restriction.GetInterruptId1() == id) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
return IsSingleIdValid(this->GetInterruptId0(), kac, kac_count) && IsSingleIdValid(this->GetInterruptId1(), kac, kac_count);
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(ApplicationType,
|
|
DEFINE_CAPABILITY_FIELD(ApplicationType, IdBits, 3);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
return restriction.GetValue() == this->GetValue();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static constexpr util::BitPack32 Encode(u32 app_type) {
|
|
util::BitPack32 encoded{IdBitsValue};
|
|
encoded.Set<ApplicationType>(app_type);
|
|
return encoded;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(KernelVersion,
|
|
DEFINE_CAPABILITY_FIELD(MinorVersion, IdBits, 4);
|
|
DEFINE_CAPABILITY_FIELD(MajorVersion, MinorVersion, 13);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
return restriction.GetValue() == this->GetValue();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(HandleTable,
|
|
DEFINE_CAPABILITY_FIELD(Size, IdBits, 10);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
return this->GetSize() <= restriction.GetSize();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
);
|
|
|
|
DEFINE_CAPABILITY_CLASS(DebugFlags,
|
|
DEFINE_CAPABILITY_FIELD(AllowDebug, IdBits, 1, bool);
|
|
DEFINE_CAPABILITY_FIELD(ForceDebug, AllowDebug, 1, bool);
|
|
|
|
bool IsValid(const util::BitPack32 *kac, size_t kac_count) const {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
if (GetCapabilityId(kac[i]) == Id) {
|
|
const auto restriction = Decode(kac[i]);
|
|
|
|
return (restriction.GetValue() & this->GetValue()) == this->GetValue();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static constexpr util::BitPack32 Encode(bool allow_debug, bool force_debug) {
|
|
util::BitPack32 encoded{IdBitsValue};
|
|
encoded.Set<AllowDebug>(allow_debug);
|
|
encoded.Set<ForceDebug>(force_debug);
|
|
return encoded;
|
|
}
|
|
);
|
|
|
|
}
|
|
|
|
/* Capabilities API. */
|
|
Result TestCapability(const util::BitPack32 *kacd, size_t kacd_count, const util::BitPack32 *kac, size_t kac_count) {
|
|
for (size_t i = 0; i < kac_count; i++) {
|
|
const auto cap = kac[i];
|
|
const auto id = GetCapabilityId(cap);
|
|
|
|
#define VALIDATE_CASE(id) \
|
|
case CapabilityId::id: \
|
|
R_UNLESS(Capability##id::Decode(cap).IsValid(kacd, kacd_count), ldr::ResultInvalidCapability##id()); \
|
|
break
|
|
switch (id) {
|
|
VALIDATE_CASE(KernelFlags);
|
|
VALIDATE_CASE(SyscallMask);
|
|
VALIDATE_CASE(MapPage);
|
|
VALIDATE_CASE(MapRegion);
|
|
VALIDATE_CASE(InterruptPair);
|
|
VALIDATE_CASE(ApplicationType);
|
|
VALIDATE_CASE(KernelVersion);
|
|
VALIDATE_CASE(HandleTable);
|
|
VALIDATE_CASE(DebugFlags);
|
|
case CapabilityId::MapRange:
|
|
{
|
|
/* Map Range needs extra logic because there it involves two sequential caps. */
|
|
i++;
|
|
R_UNLESS(i < kac_count, ldr::ResultInvalidCapabilityMapRange());
|
|
R_UNLESS(CapabilityMapRange::Decode(cap).IsValid(kac[i], kacd, kacd_count), ldr::ResultInvalidCapabilityMapRange());
|
|
}
|
|
break;
|
|
default:
|
|
R_UNLESS(id == CapabilityId::Empty, ldr::ResultUnknownCapability());
|
|
break;
|
|
}
|
|
#undef VALIDATE_CASE
|
|
}
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
u16 MakeProgramInfoFlag(const util::BitPack32 *kac, size_t count) {
|
|
u16 flags = 0;
|
|
|
|
for (size_t i = 0; i < count; ++i) {
|
|
const auto cap = kac[i];
|
|
|
|
switch (GetCapabilityId(cap)) {
|
|
case CapabilityId::ApplicationType:
|
|
{
|
|
const auto app_type = CapabilityApplicationType::Decode(cap).GetApplicationType() & ProgramInfoFlag_ApplicationTypeMask;
|
|
if (app_type != ProgramInfoFlag_InvalidType) {
|
|
flags |= app_type;
|
|
}
|
|
}
|
|
break;
|
|
case CapabilityId::DebugFlags:
|
|
if (CapabilityDebugFlags::Decode(cap).GetAllowDebug()) {
|
|
flags |= ProgramInfoFlag_AllowDebug;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return flags;
|
|
}
|
|
|
|
void UpdateProgramInfoFlag(u16 flags, util::BitPack32 *kac, size_t count) {
|
|
for (size_t i = 0; i < count; ++i) {
|
|
const auto cap = kac[i];
|
|
switch (GetCapabilityId(cap)) {
|
|
case CapabilityId::ApplicationType:
|
|
kac[i] = CapabilityApplicationType::Encode(flags & ProgramInfoFlag_ApplicationTypeMask);
|
|
break;
|
|
case CapabilityId::DebugFlags:
|
|
kac[i] = CapabilityDebugFlags::Encode((flags & ProgramInfoFlag_AllowDebug) != 0, CapabilityDebugFlags::Decode(cap).GetForceDebug());
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void PreProcessCapability(util::BitPack32 *kac, size_t count) {
|
|
for (size_t i = 0; i < count; ++i) {
|
|
const auto cap = kac[i];
|
|
switch (GetCapabilityId(cap)) {
|
|
case CapabilityId::MapRegion:
|
|
{
|
|
/* MapRegion was added in 8.0.0+, and is only allowed under kernels which have the relevant mappings. */
|
|
/* However, we allow it under all firmwares on mesosphere, to facilitate KTrace usage by hbl. */
|
|
if (!svc::IsKTraceEnabled()) {
|
|
kac[i] = EmptyCapability;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|