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KytyPS5/tests/VirtualMemoryAllocationTests.cpp
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nmzik 4532883b83 add unknwon flag
2026-07-31 02:33:00 +02:00

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#include "common/commonSubsystem.h"
#include "common/emulatorConfig.h"
#include "common/file.h"
#include "common/logging/log.h"
#include "common/subsystems.h"
#include "common/threads.h"
#include "common/virtualMemory.h"
#include "kernel/memory.h"
#include "kernel/pthread.h"
#include "libs/errno.h"
#include "loader/runtimeLinker.h"
#include "loader/systemContent.h"
#include <cinttypes>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <filesystem>
#include <string>
namespace {
using Libs::LibKernel::Memory::VirtualQueryInfo;
// Prospero ABI?
constexpr uint64_t SceKernelPageSize = 0x4000;
constexpr uint64_t SceKernelTotalPhysicalSize = 13824ull * 1024ull * 1024ull;
constexpr uint64_t TestFlexibleMemorySize = 3072ull * 1024ull * 1024ull;
constexpr int SceKernelProtCpuRead = 0x01;
constexpr int SceKernelProtCpuRw = 0x02;
constexpr int SceKernelProtCpuExec = 0x04;
constexpr int SceKernelMapFixed = 0x10;
constexpr int SceKernelMapNoOverwrite = 0x80;
constexpr int SceKernelMapDmemCompat = 0x400;
constexpr int SceKernelMapNoCoalesce = 0x400000;
constexpr int SceKernelMapAligned64Kb = 16 << 24;
constexpr int SceKernelVqFindNext = 1;
constexpr int SceKernelMtypeC = 11;
constexpr uint64_t SceKernelDirectMemoryStart = 0;
constexpr uint64_t SceKernelMemoryPoolReserveLen = 0x200000;
constexpr uint64_t SceKernelMemoryPoolCommitLen = 0x10000;
constexpr uint64_t SceKernelMemoryPoolExpandLen = 0x400000;
constexpr uint64_t SceKernelMemoryPoolAlignment = 0x10000;
constexpr int ErrorAccess = Libs::LibKernel::KERNEL_ERROR_EACCES;
struct TestFailure {};
int g_failed_tests = 0;
[[noreturn]] void Fail(const char* test, const std::string& message) {
std::fflush(stdout);
std::fprintf(stderr, "VirtualMemoryAllocationTests: %s failed: %s\n", test, message.c_str());
g_failed_tests++;
throw TestFailure {};
}
void Check(const char* test, bool value, const std::string& message) {
if (!value) {
Fail(test, message);
}
}
void CheckOk(const char* test, int result, const char* action) {
if (result != OK) {
char buffer[256] = {};
std::snprintf(buffer, sizeof(buffer), "%s returned 0x%08" PRIx32, action,
static_cast<uint32_t>(result));
Fail(test, buffer);
}
}
void CheckFailed(const char* test, int result, const char* action) {
if (result >= OK) {
char buffer[256] = {};
std::snprintf(buffer, sizeof(buffer), "%s returned success, expected negative error",
action);
Fail(test, buffer);
}
}
void InitSubsystems() {
static bool initialized = false;
if (initialized) {
return;
}
static char arg0[] = "virtual_memory_allocation_tests";
static char* argv[] = {arg0};
auto* slist = Common::SubsystemsList::Instance();
auto* core = Common::CommonSubsystem::Instance();
auto* config = Config::ConfigSubsystem::Instance();
auto* log = Log::LogSubsystem::Instance();
auto* memory = Libs::LibKernel::Memory::MemorySubsystem::Instance();
auto* thread = Common::ThreadsSubsystem::Instance();
slist->SetArgs(1, argv);
slist->Add(thread, {});
slist->Add(core, {});
slist->Add(config, {core});
Check("InitSubsystems", slist->InitAll(false), "failed to initialize base subsystems");
Config::ConfigOptions options;
options.printf_direction = Config::OutputDirection::Silent;
Config::Load(options);
slist->Add(log, {core, config});
Check("InitSubsystems", slist->InitAll(false), "failed to initialize logging subsystem");
const auto param_json =
std::filesystem::temp_directory_path() /
("kyty_virtual_memory_" +
std::to_string(reinterpret_cast<uintptr_t>(&initialized)) + ".json");
constexpr char json[] = R"({"kernel":{"flexibleMemorySize":3221225472}})";
Common::File param_file;
Check("InitSubsystems", param_file.Create(param_json), "failed to create temporary param.json");
uint32_t bytes_written = 0;
param_file.Write(json, sizeof(json) - 1, &bytes_written);
param_file.Close();
Check("InitSubsystems", bytes_written == sizeof(json) - 1,
"failed to write temporary param.json");
Loader::SystemContentLoadParamSfo(param_json);
const auto flexible_memory_size = Loader::SystemContentGetFlexibleMemorySize();
Check("InitSubsystems", Common::File::DeleteFile(param_json),
"failed to remove temporary param.json");
Check("InitSubsystems", flexible_memory_size == TestFlexibleMemorySize,
"failed to read flexible memory size from param.json");
Libs::LibKernel::Memory::SetFlexibleMemorySize(flexible_memory_size);
slist->Add(memory, {core, log, thread});
Check("InitSubsystems", slist->InitAll(false), "failed to initialize memory subsystem");
initialized = true;
}
void RunTest(void (*test_func)()) {
if (g_failed_tests != 0) {
return;
}
try {
test_func();
} catch (const TestFailure&) {
}
}
VirtualQueryInfo Query(const char* test, uint64_t addr, int flags = 0) {
VirtualQueryInfo info {};
const int ret = Libs::LibKernel::Memory::KernelVirtualQuery(reinterpret_cast<const void*>(addr),
flags, &info, sizeof(info));
CheckOk(test, ret, "KernelVirtualQuery");
return info;
}
int QueryResult(uint64_t addr, int flags = 0) {
VirtualQueryInfo info {};
return Libs::LibKernel::Memory::KernelVirtualQuery(reinterpret_cast<const void*>(addr), flags,
&info, sizeof(info));
}
size_t AvailableFlexibleMemory(const char* test) {
size_t size = 0;
const int ret = Libs::LibKernel::Memory::KernelAvailableFlexibleMemorySize(&size);
CheckOk(test, ret, "KernelAvailableFlexibleMemorySize");
return size;
}
size_t ConfiguredFlexibleMemory(const char* test) {
size_t size = 0;
CheckOk(test, Libs::LibKernel::Memory::KernelConfiguredFlexibleMemorySize(&size),
"KernelConfiguredFlexibleMemorySize");
return size;
}
uint64_t MapNamedFlexible(const char* test, uint64_t size, int prot, const char* name) {
void* addr = nullptr;
const int ret =
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(&addr, size, prot, 0, name);
CheckOk(test, ret, "KernelMapNamedFlexibleMemory");
Check(test, addr != nullptr, "flexible mapping returned null");
return reinterpret_cast<uint64_t>(addr);
}
void ExpectRange(const char* test, const VirtualQueryInfo& info, uint64_t start, uint64_t end,
int prot, uint32_t flexible, uint32_t direct, uint32_t pooled, uint32_t committed,
const char* name = nullptr, uint64_t offset = 0) {
Check(test, info.start == start, "unexpected range start");
Check(test, info.end == end, "unexpected range end");
Check(test, info.protection == prot, "unexpected range protection");
Check(test, info.is_flexible == flexible, "unexpected flexible flag");
Check(test, info.is_direct == direct, "unexpected direct flag");
Check(test, info.is_pooled == pooled, "unexpected pooled flag");
Check(test, info.is_committed == committed, "unexpected committed flag");
Check(test, info.offset == offset, "unexpected range offset");
if (name != nullptr) {
Check(test,
std::strncmp(info.name, name, Libs::LibKernel::Memory::KERNEL_MAXIMUM_NAME_LENGTH) ==
0,
"unexpected range name");
}
}
void ExpectUnmapped(const char* test, uint64_t addr) {
const int ret = QueryResult(addr);
if (ret != ErrorAccess) {
char buffer[256] = {};
std::snprintf(buffer, sizeof(buffer), "KernelVirtualQuery(unmapped) returned 0x%08" PRIx32,
static_cast<uint32_t>(ret));
Fail(test, buffer);
}
}
void TestProsperoArgumentAndInfoSizeContracts() {
const char* test = "ProsperoArgumentAndInfoSizeContracts";
void* addr = nullptr;
Check(test, sizeof(VirtualQueryInfo) == 72, "SceKernelVirtualQueryInfo layout drifted");
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(&addr, 0, SceKernelProtCpuRw,
0, "zero_len"),
"KernelMapNamedFlexibleMemory(len=0)");
CheckFailed(test, QueryResult(0), "KernelVirtualQuery(null)");
VirtualQueryInfo info {};
CheckFailed(test,
Libs::LibKernel::Memory::KernelVirtualQuery(nullptr, 0, &info, sizeof(info) - 1),
"KernelVirtualQuery(short info)");
CheckFailed(test, Libs::LibKernel::Memory::KernelVirtualQuery(nullptr, 2, &info, sizeof(info)),
"KernelVirtualQuery(unknown flags)");
std::printf("[host] %-48s ok\n", test);
}
void TestGuestAddressSpaceOwnsReservationsBeforeBacking() {
const char* test = "GuestAddressSpaceOwnsReservationsBeforeBacking";
void* addr = nullptr;
Check(test, Libs::LibKernel::Memory::TestGuestBackingOutsideAddressSpace(),
"boot-time shared backing alias overlaps an owned guest interval");
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&addr, SceKernelPageSize, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(addr);
Check(test, Libs::LibKernel::Memory::TestGuestAddressRangeIsOwned(base, SceKernelPageSize),
"guest reservation was allocated outside the early owner");
Check(test, Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base, SceKernelPageSize),
"semantic reservation replaced the owner's placeholder");
Check(test,
Libs::LibKernel::Memory::ProtectGuestHostMemory(
base, SceKernelPageSize, Common::VirtualMemory::Mode::NoAccess),
"owner rejected a sparse placeholder protection no-op");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize), "KernelMunmap");
Check(test, Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base, SceKernelPageSize),
"released semantic reservation escaped owner control");
std::printf("[host] %-48s ok\n", test);
}
void TestGuestAddressSpaceHasNoFixedFallback() {
const char* test = "GuestAddressSpaceHasNoFixedFallback";
const auto unowned_address = reinterpret_cast<void*>(0x10000);
void* addr = unowned_address;
CheckFailed(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&addr, SceKernelPageSize, SceKernelMapFixed | SceKernelMapNoOverwrite,
SceKernelPageSize),
"KernelReserveVirtualRange(unowned fixed address)");
Check(test, reinterpret_cast<uint64_t>(addr) == 0x10000,
"failed fixed reservation unexpectedly moved");
addr = unowned_address;
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&addr, SceKernelPageSize, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoOverwrite, "unowned_flexible"),
"KernelMapNamedFlexibleMemory(unowned fixed address)");
int64_t phys_addr = -1;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
addr = unowned_address;
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&addr, SceKernelPageSize, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoOverwrite, phys_addr, SceKernelPageSize,
"unowned_direct"),
"KernelMapNamedDirectMemory(unowned fixed address)");
CheckOk(test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(phys_addr, SceKernelPageSize),
"KernelCheckedReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestGuestFreeRangeSearchDoesNotUnderflow() {
const char* test = "GuestFreeRangeSearchDoesNotUnderflow";
Check(test, Libs::LibKernel::Memory::TestGuestFreeRangeBounds(),
"free-range containment accepted a candidate beyond the range end");
std::printf("[host] %-48s ok\n", test);
}
void TestFlexibleMemoryCapacityIsBootFixed() {
const char* test = "FlexibleMemoryCapacityIsBootFixed";
const auto configured = ConfiguredFlexibleMemory(test);
const auto baseline = AvailableFlexibleMemory(test);
const auto backing = Libs::LibKernel::Memory::TestGuestBackingSize();
Check(test, configured == TestFlexibleMemorySize,
"boot flexible pool did not use the param.json value");
Check(test, configured == baseline, "boot flexible pool did not start at configured capacity");
Check(test, backing == SceKernelTotalPhysicalSize,
"boot backing is not the single 13.5 GiB physical file");
Check(test, backing == Libs::LibKernel::Memory::KernelGetDirectMemorySize() + configured,
"direct and flexible regions do not partition the boot backing");
const auto address =
MapNamedFlexible(test, SceKernelPageSize, SceKernelProtCpuRw, "boot_fixed_flexible");
Check(test, ConfiguredFlexibleMemory(test) == configured,
"configured flexible capacity changed after allocation");
Check(test, Libs::LibKernel::Memory::TestGuestBackingSize() == backing,
"shared backing size changed after allocation");
Check(test, AvailableFlexibleMemory(test) == baseline - SceKernelPageSize,
"flexible allocation did not consume the boot-time pool");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(address, SceKernelPageSize),
"KernelMunmap");
Check(test, ConfiguredFlexibleMemory(test) == configured,
"configured flexible capacity changed after release");
Check(test, AvailableFlexibleMemory(test) == baseline,
"flexible release did not restore the boot-time pool");
std::printf("[host] %-48s ok\n", test);
}
void TestFlexibleMemoryUsesSharedBacking() {
const char* test = "FlexibleMemoryUsesSharedBacking";
const auto baseline = AvailableFlexibleMemory(test);
void* address = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&address, SceKernelPageSize * 2, SceKernelProtCpuRw, 0, "shared_flexible"),
"KernelMapNamedFlexibleMemory");
const auto base = reinterpret_cast<uint64_t>(address);
Check(test, Libs::LibKernel::Memory::TestGuestAddressRangeIsOwned(base, SceKernelPageSize * 2),
"flexible mapping escaped the guest owner");
constexpr uint64_t first_value = 0x464c45584241434bull; // "FLEXBACK"
constexpr uint64_t second_value = 0x534841524544464cull; // "SHAREDFL"
*reinterpret_cast<uint64_t*>(base) = first_value;
uint64_t value = 0;
Check(test, Libs::LibKernel::Memory::TryReadBacking(base, &value, sizeof(value)),
"TryReadBacking did not resolve flexible memory");
Check(test, value == first_value, "backing did not observe a flexible-memory CPU write");
Check(test,
Libs::LibKernel::Memory::TryWriteBacking(base + SceKernelPageSize, &second_value,
sizeof(second_value)),
"TryWriteBacking did not resolve flexible memory");
Check(test, *reinterpret_cast<uint64_t*>(base + SceKernelPageSize) == second_value,
"flexible-memory view did not observe a backing write");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize * 2),
"KernelMunmap");
Check(test, AvailableFlexibleMemory(test) == baseline,
"flexible backing offsets were not returned to the boot-time pool");
Check(test, !Libs::LibKernel::Memory::TryReadBacking(base, &value, sizeof(value)),
"unmapped flexible memory remained registered in the backing owner");
std::printf("[host] %-48s ok\n", test);
}
void TestFlexibleDmemCompatAndAlignmentFlags() {
const char* test = "FlexibleDmemCompatAndAlignmentFlags";
const auto baseline = AvailableFlexibleMemory(test);
void* address = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&address, SceKernelPageSize, SceKernelProtCpuRw,
SceKernelMapDmemCompat | SceKernelMapAligned64Kb, "dmem_compat"),
"KernelMapNamedFlexibleMemory(DMEM_COMPAT|ALIGNED_64KB)");
const auto base = reinterpret_cast<uint64_t>(address);
Check(test, (base & (0x10000 - 1u)) == 0, "SDK alignment flag was not honored");
const auto info = Query(test, base);
Check(test, info.is_flexible == 1 && info.is_stack == 0,
"SCE_KERNEL_MAP_DMEM_COMPAT was misclassified as MAP_STACK");
Check(test, AvailableFlexibleMemory(test) + SceKernelPageSize == baseline,
"DMEM_COMPAT mapping did not consume boot-time flexible backing");
void* stack_start = reinterpret_cast<void*>(UINT64_MAX);
void* stack_end = reinterpret_cast<void*>(UINT64_MAX);
CheckOk(test,
Libs::LibKernel::Memory::KernelIsStack(reinterpret_cast<void*>(base), &stack_start,
&stack_end),
"KernelIsStack");
Check(test, stack_start == nullptr && stack_end == nullptr,
"DMEM_COMPAT flexible mapping was reported as a stack");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap");
Check(test, AvailableFlexibleMemory(test) == baseline,
"DMEM_COMPAT cleanup did not restore flexible capacity");
void* opaque = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&opaque, SceKernelPageSize, SceKernelProtCpuRw, 0x8000, "opaque_runtime_flag"),
"KernelMapNamedFlexibleMemory(opaque runtime flag)");
Check(test, AvailableFlexibleMemory(test) + SceKernelPageSize == baseline,
"opaque runtime flag mapping did not consume boot-time flexible backing");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(opaque),
SceKernelPageSize),
"KernelMunmap(opaque runtime flag)");
Check(test, AvailableFlexibleMemory(test) == baseline,
"opaque runtime flag cleanup did not restore flexible capacity");
void* invalid_flag = nullptr;
CheckFailed(
test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&invalid_flag, SceKernelPageSize, SceKernelProtCpuRw, 0x10000, "unsupported_flag"),
"KernelMapNamedFlexibleMemory(unsupported flag)");
void* invalid_alignment = nullptr;
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&invalid_alignment, SceKernelPageSize, SceKernelProtCpuRw, 13 << 24,
"invalid_alignment"),
"KernelMapNamedFlexibleMemory(invalid alignment)");
std::printf("[host] %-48s ok\n", test);
}
void TestFlexibleNoCoalescePreservesBoundaries() {
const char* test = "FlexibleNoCoalescePreservesBoundaries";
const auto baseline = AvailableFlexibleMemory(test);
void* reserve = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&reserve, SceKernelPageSize * 2, 0, SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(reserve);
void* left = reinterpret_cast<void*>(base);
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&left, SceKernelPageSize, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoCoalesce, "no_coalesce"),
"KernelMapNamedFlexibleMemory(left)");
void* right = reinterpret_cast<void*>(base + SceKernelPageSize);
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&right, SceKernelPageSize, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoCoalesce, "no_coalesce"),
"KernelMapNamedFlexibleMemory(right)");
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize, SceKernelProtCpuRw, 1, 0,
0, 1, "no_coalesce");
ExpectRange(test, Query(test, base + SceKernelPageSize), base + SceKernelPageSize,
base + SceKernelPageSize * 2, SceKernelProtCpuRw, 1, 0, 0, 1, "no_coalesce");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize * 2),
"KernelMunmap");
Check(test, AvailableFlexibleMemory(test) == baseline,
"NO_COALESCE cleanup did not restore flexible capacity");
std::printf("[host] %-48s ok\n", test);
}
void TestFlexibleMemoryReuseIsZeroFilled() {
const char* test = "FlexibleMemoryReuseIsZeroFilled";
const auto baseline = AvailableFlexibleMemory(test);
const auto first =
MapNamedFlexible(test, SceKernelPageSize, SceKernelProtCpuRw, "flexible_zero_source");
std::memset(reinterpret_cast<void*>(first), 0xa5, SceKernelPageSize);
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(first, SceKernelPageSize),
"KernelMunmap(source)");
const auto reused =
MapNamedFlexible(test, SceKernelPageSize, SceKernelProtCpuRw, "flexible_zero_reuse");
const auto* bytes = reinterpret_cast<const uint8_t*>(reused);
Check(test,
std::all_of(bytes, bytes + SceKernelPageSize, [](uint8_t value) { return value == 0; }),
"reused flexible backing exposed stale bytes");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(reused, SceKernelPageSize),
"KernelMunmap(reuse)");
Check(test, AvailableFlexibleMemory(test) == baseline,
"zero-fill test leaked flexible backing capacity");
std::printf("[host] %-48s ok\n", test);
}
void TestGuestStackUsesPrivateOwnerMemoryAndCache() {
const char* test = "GuestStackUsesPrivateOwnerMemoryAndCache";
const auto baseline = AvailableFlexibleMemory(test);
uint64_t first = 0;
uint64_t second = 0;
uint64_t map_size = 0;
Check(test, Libs::LibKernel::TestGuestStackOwnerLifecycle(&first, &second, &map_size),
"guest stack owner lifecycle failed");
Check(test, first != 0 && first == second, "guest stack cache did not reuse its owner mapping");
Check(test, map_size != 0 && (map_size & (SceKernelPageSize - 1u)) == 0,
"guest stack mapping is not 16 KiB aligned");
Check(test, AvailableFlexibleMemory(test) == baseline,
"private guest stack changed flexible backing capacity");
std::printf("[host] %-48s ok\n", test);
}
void TestMainEntryUsesGuestStackAndDisablesHostChecks() {
const char* test = "MainEntryUsesGuestStackAndDisablesHostChecks";
Check(test, Loader::TestMainEntryUsesGuestStack(),
"main-entry stack switch did not preserve the guest/host stack invariants");
std::printf("[host] %-48s ok\n", test);
}
void TestFragmentedBackingUnmapRollback() {
const char* test = "FragmentedBackingUnmapRollback";
const auto baseline = AvailableFlexibleMemory(test);
const auto left =
MapNamedFlexible(test, SceKernelPageSize, SceKernelProtCpuRw, "backing_hole_left");
const auto blocker =
MapNamedFlexible(test, SceKernelPageSize, SceKernelProtCpuRw, "backing_blocker");
const auto right =
MapNamedFlexible(test, SceKernelPageSize, SceKernelProtCpuRw, "backing_hole_right");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(left, SceKernelPageSize),
"KernelMunmap(left hole)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(right, SceKernelPageSize),
"KernelMunmap(right hole)");
const auto fragmented =
MapNamedFlexible(test, SceKernelPageSize * 2, SceKernelProtCpuRw, "fragmented_backing");
auto* first_word = reinterpret_cast<uint64_t*>(fragmented);
auto* last_word =
reinterpret_cast<uint64_t*>(fragmented + SceKernelPageSize * 2 - sizeof(uint64_t));
*first_word = 0x465241474c454654ull; // "FRAGLEFT"
*last_word = 0x4652414752474854ull; // "FRAGRGHT"
Libs::LibKernel::Memory::TestFailGuestBackingStoreUnmapAfter(1);
CheckFailed(test, Libs::LibKernel::Memory::KernelMunmap(fragmented, SceKernelPageSize * 2),
"KernelMunmap(injected second-view failure)");
ExpectRange(test, Query(test, fragmented), fragmented, fragmented + SceKernelPageSize * 2,
SceKernelProtCpuRw, 1, 0, 0, 1, "fragmented_backing");
Check(test, *first_word == 0x465241474c454654ull && *last_word == 0x4652414752474854ull,
"transactional backing-unmap rollback lost mapped contents");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(fragmented, SceKernelPageSize * 2),
"KernelMunmap(retry)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(blocker, SceKernelPageSize),
"KernelMunmap(blocker)");
Check(test, AvailableFlexibleMemory(test) == baseline,
"fragmented backing rollback test leaked flexible capacity");
std::printf("[host] %-48s ok\n", test);
}
void TestRuntimeMemoryOwnerLifecycle() {
const char* test = "RuntimeMemoryOwnerLifecycle";
Check(test,
Libs::LibKernel::Memory::AllocateRuntimeMemory(0x10000, SceKernelPageSize,
Common::VirtualMemory::Mode::ReadWrite,
"runtime_outside_owner", true) == 0,
"fixed runtime allocation escaped the guest owner");
const auto base = Libs::LibKernel::Memory::AllocateRuntimeMemory(
0, SceKernelPageSize * 2, Common::VirtualMemory::Mode::ReadWrite, "runtime_lifecycle");
Check(test, base != 0, "runtime allocation failed");
Check(test, Libs::LibKernel::Memory::TestGuestAddressRangeIsOwned(base, SceKernelPageSize * 2),
"runtime allocation is outside the owner");
*reinterpret_cast<uint64_t*>(base) = 0x52554e54494d454full; // "RUNTIMEO"
Check(test,
Libs::LibKernel::Memory::ProtectGuestMemory(base, SceKernelPageSize,
Common::VirtualMemory::Mode::Read),
"runtime protection failed");
Check(test, Libs::LibKernel::Memory::FreeGuestMemory(base, SceKernelPageSize * 2),
"runtime free failed");
Check(test, Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base, SceKernelPageSize * 2),
"runtime free did not restore the owner placeholder");
const auto reused = Libs::LibKernel::Memory::AllocateRuntimeMemory(
base, SceKernelPageSize * 2, Common::VirtualMemory::Mode::ReadWrite, "runtime_reuse", true);
Check(test, reused == base, "fixed runtime allocation did not reuse the owner placeholder");
Check(test, Libs::LibKernel::Memory::FreeGuestMemory(reused, SceKernelPageSize * 2),
"reused runtime free failed");
const auto adjacent_first = Libs::LibKernel::Memory::AllocateRuntimeMemory(
0, SceKernelPageSize, Common::VirtualMemory::Mode::ReadWrite, "runtime_adjacent_first");
Check(test, adjacent_first != 0, "first adjacent runtime allocation failed");
const auto adjacent_second = Libs::LibKernel::Memory::AllocateRuntimeMemory(
adjacent_first + SceKernelPageSize, SceKernelPageSize,
Common::VirtualMemory::Mode::ReadWrite, "runtime_adjacent_second", true);
Check(test, adjacent_second == adjacent_first + SceKernelPageSize,
"second adjacent runtime allocation failed");
Check(test,
Libs::LibKernel::Memory::FreeGuestMemory(adjacent_first, SceKernelPageSize * 2),
"combined adjacent runtime free failed");
Check(test,
Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(adjacent_first,
SceKernelPageSize * 2),
"combined adjacent runtime free did not restore one owner placeholder");
std::printf("[host] %-48s ok\n", test);
}
void TestFlexibleMapQueryAndWholeMunmap() {
const char* test = "FlexibleMapQueryAndWholeMunmap";
const auto baseline = AvailableFlexibleMemory(test);
const auto size = SceKernelPageSize * 2;
const auto base = MapNamedFlexible(test, size, SceKernelProtCpuRw, "prospero_flex");
ExpectRange(test, Query(test, base), base, base + size, SceKernelProtCpuRw, 1, 0, 0, 1,
"prospero_flex");
Check(test, AvailableFlexibleMemory(test) + size == baseline,
"flexible allocation should consume Prospero-reported flexible budget");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, size), "KernelMunmap");
ExpectUnmapped(test, base);
Check(test, AvailableFlexibleMemory(test) == baseline,
"whole munmap should return flexible memory to Prospero-reported budget");
std::printf("[host] %-48s ok\n", test);
}
void TestPartialFlexibleMunmapAndFindNext() {
const char* test = "PartialFlexibleMunmapAndFindNext";
const auto baseline = AvailableFlexibleMemory(test);
const auto base =
MapNamedFlexible(test, SceKernelPageSize * 3, SceKernelProtCpuRw, "prospero_part");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize, SceKernelPageSize),
"KernelMunmap(middle page)");
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize, SceKernelProtCpuRw, 1, 0,
0, 1, "prospero_part");
ExpectUnmapped(test, base + SceKernelPageSize);
ExpectRange(test, Query(test, base + SceKernelPageSize, SceKernelVqFindNext),
base + SceKernelPageSize * 2, base + SceKernelPageSize * 3, SceKernelProtCpuRw, 1,
0, 0, 1, "prospero_part");
Check(test, AvailableFlexibleMemory(test) + SceKernelPageSize * 2 == baseline,
"partial munmap should return only the unmapped flexible page");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap(left cleanup)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize * 2, SceKernelPageSize),
"KernelMunmap(right cleanup)");
Check(test, AvailableFlexibleMemory(test) == baseline,
"cleanup should return all flexible memory to Prospero-reported budget");
std::printf("[host] %-48s ok\n", test);
}
void TestReserveMapFixedAndNoOverwrite() {
const char* test = "ReserveMapFixedAndNoOverwrite";
void* addr = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&addr, SceKernelPageSize * 3, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(addr);
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize * 3, 0, 0, 0, 0, 0);
void* fixed = reinterpret_cast<void*>(base + SceKernelPageSize);
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&fixed, SceKernelPageSize, SceKernelProtCpuRead, SceKernelMapFixed, "fixed_mid"),
"KernelMapNamedFlexibleMemory(fixed)");
Check(test, reinterpret_cast<uint64_t>(fixed) == base + SceKernelPageSize,
"MAP_FIXED mapping moved");
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize, 0, 0, 0, 0, 0);
ExpectRange(test, Query(test, base + SceKernelPageSize), base + SceKernelPageSize,
base + SceKernelPageSize * 2, SceKernelProtCpuRead, 1, 0, 0, 1, "fixed_mid");
ExpectRange(test, Query(test, base + SceKernelPageSize * 2), base + SceKernelPageSize * 2,
base + SceKernelPageSize * 3, 0, 0, 0, 0, 0);
void* blocked = reinterpret_cast<void*>(base + SceKernelPageSize);
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&blocked, SceKernelPageSize, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoOverwrite, "blocked"),
"KernelMapNamedFlexibleMemory(MAP_FIXED|MAP_NO_OVERWRITE)");
ExpectRange(test, Query(test, base + SceKernelPageSize), base + SceKernelPageSize,
base + SceKernelPageSize * 2, SceKernelProtCpuRead, 1, 0, 0, 1, "fixed_mid");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap(left reserve cleanup)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize, SceKernelPageSize),
"KernelMunmap(fixed cleanup)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize * 2, SceKernelPageSize),
"KernelMunmap(right reserve cleanup)");
std::printf("[host] %-48s ok\n", test);
}
void TestFixedNoOverwriteRejectsReservedRange() {
const char* test = "FixedNoOverwriteRejectsReservedRange";
void* addr = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&addr, SceKernelPageSize, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(addr);
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize, 0, 0, 0, 0, 0);
void* fixed = reinterpret_cast<void*>(base);
const int ret = Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&fixed, SceKernelPageSize, SceKernelProtCpuRw, SceKernelMapFixed | SceKernelMapNoOverwrite,
"reserved_blocked");
const bool rejected = ret < OK;
if (ret == OK) {
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(fixed),
SceKernelPageSize),
"KernelMunmap(unexpected fixed map cleanup)");
if (reinterpret_cast<uint64_t>(fixed) != base) {
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap(reserve cleanup)");
}
} else {
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap(reserve cleanup)");
}
Check(test, rejected,
"MAP_FIXED|MAP_NO_OVERWRITE should reject an already reserved virtual "
"range");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectMapQueryOffsetAndPartialMunmap() {
const char* test = "DirectMapQueryOffsetAndPartialMunmap";
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
SceKernelPageSize * 4, SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* addr = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&addr, SceKernelPageSize * 4, SceKernelProtCpuRw, 0, phys_addr, SceKernelPageSize,
"prospero_direct"),
"KernelMapNamedDirectMemory");
const auto base = reinterpret_cast<uint64_t>(addr);
const auto phys = static_cast<uint64_t>(phys_addr);
Check(test, Libs::LibKernel::Memory::TestGuestAddressRangeIsOwned(base, SceKernelPageSize * 4),
"direct mapping escaped the guest owner");
void* alias = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&alias, SceKernelPageSize * 4, SceKernelProtCpuRw, 0, phys_addr, SceKernelPageSize,
"prospero_direct_alias"),
"KernelMapNamedDirectMemory(alias)");
const auto alias_base = reinterpret_cast<uint64_t>(alias);
constexpr uint64_t alias_test_value = 0x4b595459444d454dull; // "KYTYDMEM"
*reinterpret_cast<uint64_t*>(base) = alias_test_value;
Check(test, *reinterpret_cast<const uint64_t*>(alias_base) == alias_test_value,
"direct mappings of the same physical offset must share backing storage");
uint64_t backing_read = 0;
Check(test, Libs::LibKernel::Memory::TryReadBacking(base, &backing_read, sizeof(backing_read)),
"TryReadBacking should resolve a direct mapping");
Check(test, backing_read == alias_test_value,
"TryReadBacking should observe the physical backing bytes");
constexpr uint64_t backing_write = 0x524541444241434bull; // "READBACK"
Check(test,
Libs::LibKernel::Memory::TryWriteBacking(alias_base + sizeof(uint64_t), &backing_write,
sizeof(backing_write)),
"TryWriteBacking should resolve a direct alias");
backing_read = 0;
Check(test,
Libs::LibKernel::Memory::TryReadBacking(base + sizeof(uint64_t), &backing_read,
sizeof(backing_read)),
"TryReadBacking should resolve an aliased physical offset");
Check(test, backing_read == backing_write,
"backing reads and writes should preserve direct-memory aliasing");
auto info = Query(test, base);
ExpectRange(test, info, base, base + SceKernelPageSize * 4, SceKernelProtCpuRw, 0, 1, 0, 1,
"prospero_direct", phys);
Check(test, info.memory_type == SceKernelMtypeC, "unexpected direct memory type");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize, SceKernelPageSize),
"KernelMunmap(direct middle page)");
ExpectUnmapped(test, base + SceKernelPageSize);
constexpr uint64_t transaction_sentinel = 0x5452414e53414354ull; // "TRANSACT"
constexpr uint64_t rejected_write = 0x4e4f504152544941ull; // "NOPARTIA"
const auto crossing_address = base + SceKernelPageSize - sizeof(uint32_t);
std::memcpy(reinterpret_cast<void*>(alias_base + SceKernelPageSize - sizeof(uint32_t)),
&transaction_sentinel, sizeof(transaction_sentinel));
Check(test,
!Libs::LibKernel::Memory::TryWriteBacking(crossing_address, &rejected_write,
sizeof(rejected_write)),
"TryWriteBacking should reject a range crossing an unmapped span");
uint64_t backing_after_rejected_write = 0;
std::memcpy(&backing_after_rejected_write,
reinterpret_cast<const void*>(alias_base + SceKernelPageSize - sizeof(uint32_t)),
sizeof(backing_after_rejected_write));
Check(test, backing_after_rejected_write == transaction_sentinel,
"failed backing writes must not modify a validated prefix");
uint64_t rejected_read = transaction_sentinel;
Check(test,
!Libs::LibKernel::Memory::TryReadBacking(crossing_address, &rejected_read,
sizeof(rejected_read)),
"TryReadBacking should reject a range crossing an unmapped span");
Check(test, rejected_read == transaction_sentinel,
"failed backing reads must not modify a destination prefix");
Check(test,
Libs::LibKernel::Memory::ClampRangeSize(base + SceKernelPageSize - 0xf30, 0x1560) ==
0xf30,
"ClampRangeSize did not stop at an unmapped span");
info = Query(test, base + SceKernelPageSize, SceKernelVqFindNext);
ExpectRange(test, info, base + SceKernelPageSize * 2, base + SceKernelPageSize * 4,
SceKernelProtCpuRw, 0, 1, 0, 1, "prospero_direct", phys + SceKernelPageSize * 2);
Check(test, info.memory_type == SceKernelMtypeC, "unexpected right direct memory type");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap(direct left cleanup)");
CheckOk(
test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize * 2, SceKernelPageSize * 2),
"KernelMunmap(direct right cleanup)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(alias_base, SceKernelPageSize * 4),
"KernelMunmap(direct alias cleanup)");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, SceKernelPageSize * 4),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectPartialProtectUnmapPreservesNeighbors() {
const char* test = "DirectPartialProtectUnmapPreservesNeighbors";
const auto size = SceKernelPageSize * 3;
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), size, SceKernelPageSize,
SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* address = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(&address, size, SceKernelProtCpuRw,
0, phys_addr, SceKernelPageSize,
"partial_protect_direct"),
"KernelMapNamedDirectMemory");
const auto base = reinterpret_cast<uint64_t>(address);
CheckOk(
test,
Libs::LibKernel::Memory::KernelMprotect(reinterpret_cast<void*>(base + SceKernelPageSize),
SceKernelPageSize, SceKernelProtCpuRead),
"KernelMprotect(middle)");
Check(test,
Libs::LibKernel::Memory::ProtectGuestHostMemory(
base, size, Common::VirtualMemory::Mode::Read),
"owner could not protect fragmented backing views");
Check(test,
Libs::LibKernel::Memory::ProtectGuestHostMemory(
base, size, Common::VirtualMemory::Mode::ReadWrite),
"owner could not restore fragmented backing views");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelPageSize, SceKernelPageSize),
"KernelMunmap(middle)");
Common::VirtualMemory::Mode old_left {};
Common::VirtualMemory::Mode old_right {};
Check(test,
Common::VirtualMemory::Protect(base, SceKernelPageSize,
Common::VirtualMemory::Mode::ReadWrite, &old_left),
"could not inspect left-page protection");
Check(test,
Common::VirtualMemory::Protect(base + SceKernelPageSize * 2, SceKernelPageSize,
Common::VirtualMemory::Mode::ReadWrite, &old_right),
"could not inspect right-page protection");
Check(test, old_left == Common::VirtualMemory::Mode::ReadWrite,
"partial unmap changed the left neighbor protection");
Check(test, old_right == Common::VirtualMemory::Mode::ReadWrite,
"partial unmap changed the right neighbor protection");
*reinterpret_cast<uint64_t*>(base) = 0x4c45465450524f54ull; // "LEFTPROT"
*reinterpret_cast<uint64_t*>(base + SceKernelPageSize * 2) =
0x5247485450524f54ull; // "RGHTPROT"
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, size),
"KernelReleaseDirectMemory");
ExpectUnmapped(test, base);
ExpectUnmapped(test, base + SceKernelPageSize * 2);
std::printf("[host] %-48s ok\n", test);
}
void TestDirectMapValidationBeforeOwnerMutation() {
const char* test = "DirectMapValidationBeforeOwnerMutation";
int64_t invalid = -1;
CheckFailed(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize + 1,
SceKernelPageSize, SceKernelMtypeC, &invalid),
"KernelAllocateDirectMemory(unaligned size)");
Check(test, invalid == -1, "invalid direct allocation changed the output address");
CheckFailed(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
0x1000, SceKernelMtypeC, &invalid),
"KernelAllocateDirectMemory(sub-page alignment)");
Check(test, invalid == -1, "invalid alignment changed the output address");
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize * 2,
SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
auto expect_invalid = [&](size_t len, int prot, int flags, int64_t phys, size_t alignment,
const char* action) {
void* address = nullptr;
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapDirectMemory(&address, len, prot, flags, phys,
alignment),
action);
Check(test, address == nullptr, "invalid direct map changed the output address");
};
expect_invalid(SceKernelPageSize + 1, SceKernelProtCpuRw, 0, phys_addr, SceKernelPageSize,
"KernelMapDirectMemory(unaligned size)");
expect_invalid(SceKernelPageSize, SceKernelProtCpuRw, 0, phys_addr + 1, SceKernelPageSize,
"KernelMapDirectMemory(unaligned physical address)");
expect_invalid(SceKernelPageSize, SceKernelProtCpuExec, 0, phys_addr, SceKernelPageSize,
"KernelMapDirectMemory(executable)");
void* aligned = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapDirectMemory(
&aligned, SceKernelPageSize, SceKernelProtCpuRw, 0, phys_addr, 0xc000),
"KernelMapDirectMemory(16K-multiple alignment)");
Check(test, reinterpret_cast<uint64_t>(aligned) % 0xc000 == 0,
"non-power-of-two 16K alignment was not honored");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(aligned),
SceKernelPageSize),
"KernelMunmap(16K-multiple alignment)");
void* ignored_flag = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapDirectMemory(&ignored_flag, SceKernelPageSize,
SceKernelProtCpuRw, 0x08, phys_addr,
SceKernelPageSize),
"KernelMapDirectMemory(ignored flag)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(ignored_flag),
SceKernelPageSize),
"KernelMunmap(ignored flag)");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, SceKernelPageSize * 2),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectReleaseRollbackRestoresOwnerMapping() {
const char* test = "DirectReleaseRollbackRestoresOwnerMapping";
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* address = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&address, SceKernelPageSize, SceKernelProtCpuRw, 0, phys_addr, SceKernelPageSize,
"release_rollback"),
"KernelMapNamedDirectMemory");
const auto base = reinterpret_cast<uint64_t>(address);
*reinterpret_cast<uint64_t*>(base) = 0x52454c524f4c4c42ull; // "RELROLLB"
Libs::LibKernel::Memory::TestFailNextPhysicalMemoryUnmap();
CheckFailed(
test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(phys_addr, SceKernelPageSize),
"KernelCheckedReleaseDirectMemory(injected failure)");
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize, SceKernelProtCpuRw, 0, 1,
0, 1, "release_rollback", static_cast<uint64_t>(phys_addr));
Check(test, *reinterpret_cast<uint64_t*>(base) == 0x52454c524f4c4c42ull,
"release rollback lost the shared-backing contents");
CheckOk(test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(phys_addr, SceKernelPageSize),
"KernelCheckedReleaseDirectMemory(retry)");
ExpectUnmapped(test, base);
std::printf("[host] %-48s ok\n", test);
}
void TestDirectReleaseContracts() {
const char* test = "DirectReleaseContracts";
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(0, 0),
"KernelReleaseDirectMemory(zero length)");
CheckOk(test, Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(0, 0),
"KernelCheckedReleaseDirectMemory(zero length)");
CheckFailed(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(1, SceKernelPageSize),
"KernelReleaseDirectMemory(unaligned start)");
CheckFailed(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(0, SceKernelPageSize + 1),
"KernelReleaseDirectMemory(unaligned size)");
const auto free_offset = static_cast<int64_t>(
Libs::LibKernel::Memory::KernelGetDirectMemorySize() - SceKernelPageSize);
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(free_offset, SceKernelPageSize),
"KernelReleaseDirectMemory(unallocated range)");
Check(test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(
free_offset, SceKernelPageSize) == Libs::LibKernel::KERNEL_ERROR_ENOENT,
"checked release did not report an unallocated range");
std::printf("[host] %-48s ok\n", test);
}
void TestReleasedReserveCanBeReused() {
const char* test = "ReleasedReserveCanBeReused";
void* addr = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&addr, SceKernelPageSize, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(addr);
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize), "KernelMunmap");
void* reused = reinterpret_cast<void*>(base);
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&reused, SceKernelPageSize, SceKernelMapFixed | SceKernelMapNoOverwrite,
SceKernelPageSize),
"KernelReserveVirtualRange(reuse)");
Check(test, reinterpret_cast<uint64_t>(reused) == base,
"released host reservation was not reusable at the same address");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize),
"KernelMunmap(reuse cleanup)");
std::printf("[host] %-48s ok\n", test);
}
void TestMunmapAcrossAdjacentFlexibleMappings() {
const char* test = "MunmapAcrossAdjacentFlexibleMappings";
const auto baseline = AvailableFlexibleMemory(test);
void* reserve = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&reserve, SceKernelPageSize * 2, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(reserve);
void* left = reinterpret_cast<void*>(base);
void* right = reinterpret_cast<void*>(base + SceKernelPageSize);
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&left, SceKernelPageSize, SceKernelProtCpuRw, SceKernelMapFixed, "adjacent_left"),
"KernelMapNamedFlexibleMemory(left)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&right, SceKernelPageSize, SceKernelProtCpuRw, SceKernelMapFixed, "adjacent_right"),
"KernelMapNamedFlexibleMemory(right)");
Check(test,
Libs::LibKernel::Memory::ClampRangeSize(base + SceKernelPageSize - 0x100, 0x200) == 0x200,
"ClampRangeSize did not cross adjacent committed mappings");
Check(test,
Libs::LibKernel::Memory::ProtectGuestHostMemory(
base, SceKernelPageSize * 2, Common::VirtualMemory::Mode::Read),
"owner could not protect adjacent backing mappings");
Check(test,
Libs::LibKernel::Memory::ProtectGuestHostMemory(
base, SceKernelPageSize * 2, Common::VirtualMemory::Mode::ReadWrite),
"owner could not restore adjacent backing mappings");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize * 2),
"KernelMunmap(adjacent mappings)");
Check(test, AvailableFlexibleMemory(test) == baseline,
"multi-range unmap leaked flexible-memory budget");
ExpectUnmapped(test, base);
ExpectUnmapped(test, base + SceKernelPageSize);
std::printf("[host] %-48s ok\n", test);
}
void TestNonzeroDirectOffsetAliasesSharedBacking() {
const char* test = "NonzeroDirectOffsetAliasesSharedBacking";
int64_t first = 0;
int64_t second = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
SceKernelPageSize, SceKernelMtypeC, &first),
"KernelAllocateDirectMemory(first)");
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
SceKernelPageSize, SceKernelMtypeC, &second),
"KernelAllocateDirectMemory(second)");
Check(test, second == first + static_cast<int64_t>(SceKernelPageSize),
"second allocation should use a nonzero 16 KiB offset");
void* first_alias = nullptr;
void* second_alias = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&first_alias, SceKernelPageSize, SceKernelProtCpuRw, 0, second, SceKernelPageSize,
"prospero_nonzero_a"),
"KernelMapNamedDirectMemory(first alias)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&second_alias, SceKernelPageSize, SceKernelProtCpuRw, 0, second, SceKernelPageSize,
"prospero_nonzero_b"),
"KernelMapNamedDirectMemory(second alias)");
*reinterpret_cast<uint64_t*>(first_alias) = 0x4b59545931364b42ull; // "KYTY16KB"
Check(test, *reinterpret_cast<const uint64_t*>(second_alias) == 0x4b59545931364b42ull,
"nonzero-offset mappings must share backing storage");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(first_alias),
SceKernelPageSize),
"KernelMunmap(first alias)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(second_alias),
SceKernelPageSize),
"KernelMunmap(second alias)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(second, SceKernelPageSize),
"KernelReleaseDirectMemory(second)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(first, SceKernelPageSize),
"KernelReleaseDirectMemory(first)");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectMapAcrossContiguousAllocations() {
const char* test = "DirectMapAcrossContiguousAllocations";
const auto end = Libs::LibKernel::Memory::KernelGetDirectMemorySize();
int64_t first = 0;
int64_t second = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, end, SceKernelPageSize, SceKernelPageSize, SceKernelMtypeC, &first),
"KernelAllocateDirectMemory(first)");
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, end, SceKernelPageSize, SceKernelPageSize, SceKernelMtypeC, &second),
"KernelAllocateDirectMemory(second)");
Check(test, second == first + static_cast<int64_t>(SceKernelPageSize),
"test allocations are not physically contiguous");
void* mapping = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&mapping, SceKernelPageSize * 2, SceKernelProtCpuRw, 0, first, SceKernelPageSize,
"contiguous_allocations"),
"KernelMapNamedDirectMemory");
auto* words = reinterpret_cast<uint64_t*>(mapping);
words[0] = 0x434f4e5449474c46ull; // "CONTIGLF"
*reinterpret_cast<uint64_t*>(reinterpret_cast<uint64_t>(mapping) + SceKernelPageSize) =
0x434f4e5449475254ull; // "CONTIGRT"
CheckOk(test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(first, SceKernelPageSize * 2),
"KernelCheckedReleaseDirectMemory(contiguous span)");
ExpectUnmapped(test, reinterpret_cast<uint64_t>(mapping));
int64_t reclaimed = -1;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, end, SceKernelPageSize * 2, SceKernelPageSize, SceKernelMtypeC, &reclaimed),
"KernelAllocateDirectMemory(reclaimed)");
Check(test, reclaimed == first, "released contiguous span was not coalesced");
CheckOk(
test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(reclaimed, SceKernelPageSize * 2),
"KernelCheckedReleaseDirectMemory(reclaimed)");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectPhysicalFreeRangeReuseAndCoalescing() {
const char* test = "DirectPhysicalFreeRangeReuseAndCoalescing";
const auto end = Libs::LibKernel::Memory::KernelGetDirectMemorySize();
int64_t first = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, end, SceKernelPageSize * 3, SceKernelPageSize, SceKernelMtypeC, &first),
"KernelAllocateDirectMemory(first)");
const auto middle = first + static_cast<int64_t>(SceKernelPageSize);
const auto last = middle + static_cast<int64_t>(SceKernelPageSize);
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(middle, SceKernelPageSize),
"KernelReleaseDirectMemory(middle split)");
int64_t reused = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, end, SceKernelPageSize, SceKernelPageSize, SceKernelMtypeC, &reused),
"KernelAllocateDirectMemory(reused)");
Check(test, reused == middle, "released physical gap was not reused");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(first, SceKernelPageSize),
"KernelReleaseDirectMemory(left split)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(reused, SceKernelPageSize),
"KernelReleaseDirectMemory(reused)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(last, SceKernelPageSize),
"KernelReleaseDirectMemory(right split)");
int64_t coalesced = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, end, SceKernelPageSize * 3, SceKernelPageSize, SceKernelMtypeC, &coalesced),
"KernelAllocateDirectMemory(coalesced)");
Check(test, coalesced == first, "adjacent released physical ranges were not coalesced");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(coalesced, SceKernelPageSize * 3),
"KernelReleaseDirectMemory(coalesced)");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectAlignmentStaysWithinSearchRange() {
const char* test = "DirectAlignmentStaysWithinSearchRange";
constexpr int64_t search_start = SceKernelPageSize * 2;
constexpr uint64_t alignment = SceKernelPageSize * 3;
const auto search_end = Libs::LibKernel::Memory::KernelGetDirectMemorySize();
int64_t phys_addr = -1;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(search_start, search_end,
SceKernelPageSize, alignment,
SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory(non-power-of-two alignment)");
Check(test, phys_addr >= search_start, "aligned allocation escaped below search_start");
Check(test, static_cast<uint64_t>(phys_addr) % alignment == 0,
"allocation did not honor the requested alignment");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, SceKernelPageSize),
"KernelReleaseDirectMemory");
constexpr size_t out_of_range_alignment = UINT64_MAX - (SceKernelPageSize - 1);
phys_addr = -1;
const int result = Libs::LibKernel::Memory::KernelAllocateDirectMemory(
search_start, search_end, SceKernelPageSize, out_of_range_alignment, SceKernelMtypeC,
&phys_addr);
CheckFailed(test, result, "KernelAllocateDirectMemory(out-of-range alignment)");
Check(test, phys_addr == -1, "failed allocation modified physAddrOut");
std::printf("[host] %-48s ok\n", test);
}
void TestDefaultDirectMapUsesSystemAddressRange() {
const char* test = "DefaultDirectMapUsesSystemAddressRange";
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* address = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(&address, SceKernelPageSize,
SceKernelProtCpuRw, 0, phys_addr,
SceKernelPageSize, "system_direct"),
"KernelMapNamedDirectMemory");
Check(test, address != nullptr, "direct mapping returned null");
#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
constexpr uint64_t SystemManagedMin = 0x0000040000ull;
constexpr uint64_t SystemManagedMax = 0x07fffeffffull;
const auto mapped = reinterpret_cast<uint64_t>(address);
Check(test, mapped >= SystemManagedMin && mapped + SceKernelPageSize - 1 <= SystemManagedMax,
"default direct mapping fell outside the system-managed host range");
#endif
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(address),
SceKernelPageSize),
"KernelMunmap");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, SceKernelPageSize),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestLargeDirectMapAliasesAcrossChunks() {
const char* test = "LargeDirectMapAliasesAcrossChunks";
constexpr uint64_t size = 0x400000;
constexpr uint64_t boundary = 0x200000;
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), size, 0x10000,
SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* first_alias = nullptr;
void* second_alias = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&first_alias, size, SceKernelProtCpuRw, 0, phys_addr, 0x10000, "large_direct_a"),
"KernelMapNamedDirectMemory(first alias)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&second_alias, size, SceKernelProtCpuRw, 0, phys_addr, 0x10000, "large_direct_b"),
"KernelMapNamedDirectMemory(second alias)");
auto* first = static_cast<uint8_t*>(first_alias);
auto* second = static_cast<uint8_t*>(second_alias);
*reinterpret_cast<uint64_t*>(first) = 0x1111222233334444ull;
*reinterpret_cast<uint64_t*>(first + boundary - 8) = 0x5555666677778888ull;
*reinterpret_cast<uint64_t*>(first + boundary) = 0x9999aaaabbbbccccull;
*reinterpret_cast<uint64_t*>(first + size - 8) = 0xddddeeeeffff0001ull;
Check(test,
*reinterpret_cast<const uint64_t*>(second) == 0x1111222233334444ull &&
*reinterpret_cast<const uint64_t*>(second + boundary - 8) == 0x5555666677778888ull &&
*reinterpret_cast<const uint64_t*>(second + boundary) == 0x9999aaaabbbbccccull &&
*reinterpret_cast<const uint64_t*>(second + size - 8) == 0xddddeeeeffff0001ull,
"large direct aliases diverged at a mapping chunk boundary");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(first_alias), size),
"KernelMunmap(first alias)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(second_alias), size),
"KernelMunmap(second alias)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, size),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestDirectMapUnmapReusesHostAddress() {
const char* test = "DirectMapUnmapReusesHostAddress";
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
SceKernelPageSize, SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
uint64_t first_address = 0;
for (int iteration = 0; iteration < 64; iteration++) {
void* address = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&address, SceKernelPageSize, SceKernelProtCpuRw, 0, phys_addr,
SceKernelPageSize, "reuse_direct"),
"KernelMapNamedDirectMemory");
const auto current_address = reinterpret_cast<uint64_t>(address);
if (iteration == 0) {
first_address = current_address;
} else {
char message[160] = {};
std::snprintf(message, sizeof(message),
"direct map address changed from 0x%016" PRIx64 " to 0x%016" PRIx64,
first_address, current_address);
Check(test, current_address == first_address, message);
}
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(current_address, SceKernelPageSize),
"KernelMunmap");
}
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, SceKernelPageSize),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestFixedReserveReplacesPartialDirectMapping() {
const char* test = "FixedReserveReplacesPartialDirectMapping";
constexpr uint64_t page_count = 13;
constexpr uint64_t keep_pages = 5;
constexpr uint64_t total_size = SceKernelPageSize * page_count;
constexpr uint64_t keep_size = SceKernelPageSize * keep_pages;
constexpr uint64_t replace_size = total_size - keep_size;
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
total_size, SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* alias = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&alias, total_size, SceKernelProtCpuRw, 0, phys_addr, SceKernelPageSize,
"partial_replace_alias"),
"KernelMapNamedDirectMemory(alias)");
*reinterpret_cast<uint64_t*>(reinterpret_cast<uint64_t>(alias) + keep_size) =
0x4b595459414c4941ull; // "KYTYALIA"
void* reserve = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&reserve, total_size, 0,
SceKernelPageSize),
"KernelReserveVirtualRange(container)");
const auto base = reinterpret_cast<uint64_t>(reserve);
void* mapped = reserve;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&mapped, total_size, SceKernelProtCpuRw, SceKernelMapFixed | SceKernelMapNoCoalesce,
phys_addr, SceKernelPageSize, "partial_replace_direct"),
"KernelMapNamedDirectMemory");
Check(test, mapped == reserve, "fixed direct mapping moved");
*reinterpret_cast<uint64_t*>(base) = 0x4b5954594b454550ull; // "KYTYKEEP"
void* replacement = reinterpret_cast<void*>(base + keep_size);
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&replacement, replace_size, SceKernelMapFixed | SceKernelMapNoCoalesce,
SceKernelPageSize),
"KernelReserveVirtualRange(partial replacement)");
Check(test, reinterpret_cast<uint64_t>(replacement) == base + keep_size,
"partial fixed reservation moved");
Check(test, *reinterpret_cast<uint64_t*>(base) == 0x4b5954594b454550ull,
"partial replacement damaged the neighboring direct mapping");
ExpectRange(test, Query(test, base), base, base + keep_size, SceKernelProtCpuRw, 0, 1, 0, 1,
"partial_replace_direct");
ExpectRange(test, Query(test, base + keep_size), base + keep_size, base + total_size, 0, 0, 0,
0, 0);
void* remapped = replacement;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&remapped, replace_size, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoCoalesce, phys_addr + keep_size,
SceKernelPageSize, "partial_replace_remap"),
"KernelMapNamedDirectMemory(replacement reuse)");
Check(test, remapped == replacement, "replacement reservation was not reusable in place");
Check(test, *reinterpret_cast<uint64_t*>(remapped) == 0x4b595459414c4941ull,
"replacement remap did not preserve its direct-memory backing offset");
*reinterpret_cast<uint64_t*>(remapped) = 0x4b59545952455553ull; // "KYTYREUS"
Check(test,
*reinterpret_cast<uint64_t*>(reinterpret_cast<uint64_t>(alias) + keep_size) ==
0x4b59545952455553ull,
"replacement remap did not alias the original direct-memory backing");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, keep_size),
"KernelMunmap(direct remainder)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base + keep_size, replace_size),
"KernelMunmap(reused replacement)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(alias), total_size),
"KernelMunmap(alias)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, total_size),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestFixedReserveRollbackSkipsUntouchedChunks() {
const char* test = "FixedReserveRollbackSkipsUntouchedChunks";
constexpr uint64_t part_size = SceKernelPageSize * 2;
constexpr uint64_t total_size = part_size * 2;
int64_t left_phys = 0;
int64_t right_phys = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
part_size, SceKernelPageSize, SceKernelMtypeC, &left_phys),
"KernelAllocateDirectMemory(left)");
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
part_size, SceKernelPageSize, SceKernelMtypeC, &right_phys),
"KernelAllocateDirectMemory(right)");
void* reserve = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&reserve, total_size, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(reserve);
void* left = reserve;
void* right = reinterpret_cast<void*>(base + part_size);
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&left, part_size, SceKernelProtCpuRw, SceKernelMapFixed | SceKernelMapNoCoalesce,
left_phys, SceKernelPageSize, "rollback_left"),
"KernelMapNamedDirectMemory(left)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&right, part_size, SceKernelProtCpuRw, SceKernelMapFixed | SceKernelMapNoCoalesce,
right_phys, SceKernelPageSize, "rollback_right"),
"KernelMapNamedDirectMemory(right)");
*reinterpret_cast<uint64_t*>(left) = 0x4b5954594c454654ull; // "KYTYLEFT"
*reinterpret_cast<uint64_t*>(right) = 0x4b59545952474854ull; // "KYTYRGHT"
Libs::LibKernel::Memory::TestFailPhysicalMemoryUnmapAfter(1);
void* replacement = reserve;
CheckFailed(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&replacement, total_size, SceKernelMapFixed | SceKernelMapNoCoalesce,
SceKernelPageSize),
"KernelReserveVirtualRange(second-chunk rollback)");
Check(test, *reinterpret_cast<uint64_t*>(left) == 0x4b5954594c454654ull,
"rollback did not restore the mutated first chunk");
Check(test, *reinterpret_cast<uint64_t*>(right) == 0x4b59545952474854ull,
"rollback damaged the failing second chunk");
Check(test, !Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base, part_size),
"first restored mapping remained recorded as a free placeholder");
Check(test, !Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base + part_size, part_size),
"second restored mapping remained recorded as a free placeholder");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, part_size), "KernelMunmap(left)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base + part_size, part_size),
"KernelMunmap(right)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(left_phys, part_size),
"KernelReleaseDirectMemory(left)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(right_phys, part_size),
"KernelReleaseDirectMemory(right)");
std::printf("[host] %-48s ok\n", test);
}
void TestFixedReserveRollbackConsumesRestoredPlaceholder() {
const char* test = "FixedReserveRollbackConsumesRestoredPlaceholder";
constexpr uint64_t total_size = SceKernelPageSize * 4;
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
total_size, SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* reserve = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&reserve, total_size, 0,
SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(reserve);
void* mapped = reserve;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&mapped, total_size, SceKernelProtCpuRw, SceKernelMapFixed | SceKernelMapNoCoalesce,
phys_addr, SceKernelPageSize, "rollback_direct"),
"KernelMapNamedDirectMemory");
*reinterpret_cast<uint64_t*>(base) = 0x4b595459524f4c4cull; // "KYTYROLL"
Libs::LibKernel::Memory::TestFailNextPhysicalMemoryUnmap();
void* replacement = reserve;
CheckFailed(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&replacement, total_size, SceKernelMapFixed | SceKernelMapNoCoalesce,
SceKernelPageSize),
"KernelReserveVirtualRange(injected rollback)");
Check(test, *reinterpret_cast<uint64_t*>(base) == 0x4b595459524f4c4cull,
"rollback did not restore direct-memory contents");
Check(test, !Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base, total_size),
"rollback left a mapped direct range recorded as a free placeholder");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, total_size), "KernelMunmap");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, total_size),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestFixedReserveRangeAddRollbackKeepsPlaceholder() {
const char* test = "FixedReserveRangeAddRollbackKeepsPlaceholder";
constexpr uint64_t size = SceKernelPageSize * 4;
int64_t phys_addr = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
SceKernelDirectMemoryStart, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
size, SceKernelPageSize, SceKernelMtypeC, &phys_addr),
"KernelAllocateDirectMemory");
void* reserve = nullptr;
CheckOk(
test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&reserve, size, 0, SceKernelPageSize),
"KernelReserveVirtualRange");
const auto base = reinterpret_cast<uint64_t>(reserve);
void* mapped = reserve;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&mapped, size, SceKernelProtCpuRw, SceKernelMapFixed | SceKernelMapNoCoalesce,
phys_addr, SceKernelPageSize, "range_add_rollback"),
"KernelMapNamedDirectMemory");
*reinterpret_cast<uint64_t*>(mapped) = 0x4b59545952414e47ull; // "KTYRANG"
Libs::LibKernel::Memory::TestFailNextFixedReserveRangeRegistration();
void* replacement = mapped;
CheckFailed(
test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(
&replacement, size, SceKernelMapFixed | SceKernelMapNoCoalesce, SceKernelPageSize),
"KernelReserveVirtualRange(range-add rollback)");
Check(test, *reinterpret_cast<uint64_t*>(mapped) == 0x4b59545952414e47ull,
"range-add rollback did not restore direct-memory contents");
Check(test, !Libs::LibKernel::Memory::TestPlaceholderRangeIsFree(base, size),
"range-add rollback left the restored mapping recorded as free");
ExpectRange(test, Query(test, base), base, base + size, SceKernelProtCpuRw, 0, 1, 0, 1,
"range_add_rollback");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, size), "KernelMunmap");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys_addr, size),
"KernelReleaseDirectMemory");
std::printf("[host] %-48s ok\n", test);
}
void TestLargeHintedReserveHostsSmallDirectMap() {
const char* test = "LargeHintedReserveHostsSmallDirectMap";
constexpr uint64_t arena_base = 0x1000000000ull;
constexpr uint64_t arena_size = 0x04000000ull;
constexpr uint64_t window_size = 0x00200000ull;
void* arena = reinterpret_cast<void*>(arena_base);
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&arena, arena_size, 0, 0x200000),
"KernelReserveVirtualRange(arena)");
const auto actual_arena = reinterpret_cast<uint64_t>(arena);
Check(test, actual_arena >= arena_base && (actual_arena & (0x200000 - 1u)) == 0,
"large hinted reserve violated its search start or alignment");
void* window = reinterpret_cast<void*>(arena_base);
CheckOk(test,
Libs::LibKernel::Memory::KernelReserveVirtualRange(&window, window_size, 0,
SceKernelPageSize),
"KernelReserveVirtualRange(window)");
Check(test, reinterpret_cast<uint64_t>(window) >= actual_arena + arena_size,
"second hinted reserve overlaps the large arena");
int64_t phys = 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize * 2,
SceKernelPageSize, SceKernelMtypeC, &phys),
"KernelAllocateDirectMemory");
void* mapped = window;
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedDirectMemory(
&mapped, SceKernelPageSize * 2, SceKernelProtCpuRw,
SceKernelMapFixed | SceKernelMapNoCoalesce, phys, 0, "prospero_large_reserve"),
"KernelMapNamedDirectMemory");
Check(test, mapped == window, "fixed direct mapping moved away from the reserved window");
*reinterpret_cast<uint64_t*>(mapped) = 0x4b59545952455356ull; // "KYTYRESV"
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(mapped),
SceKernelPageSize * 2),
"KernelMunmap(direct)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(phys, SceKernelPageSize * 2),
"KernelReleaseDirectMemory");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(window) +
SceKernelPageSize * 2,
window_size - SceKernelPageSize * 2),
"KernelMunmap(window reserve remainder)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(reinterpret_cast<uint64_t>(arena), arena_size),
"KernelMunmap(arena reserve)");
std::printf("[host] %-48s ok\n", test);
}
void TestMemoryPoolAlignmentContracts() {
const char* test = "MemoryPoolAlignmentContracts";
void* addr = nullptr;
CheckFailed(
test,
Libs::LibKernel::Memory::KernelMemoryPoolReserve(nullptr, SceKernelPageSize, 0, 0, &addr),
"KernelMemoryPoolReserve(16KiB len)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolReserve(nullptr, SceKernelMemoryPoolReserveLen,
0, 0, &addr),
"KernelMemoryPoolReserve");
const auto base = reinterpret_cast<uint64_t>(addr);
CheckFailed(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(reinterpret_cast<void*>(base),
SceKernelPageSize, SceKernelMtypeC,
SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(16KiB len)");
CheckFailed(test,
Libs::LibKernel::Memory::KernelMemoryPoolDecommit(reinterpret_cast<void*>(base),
SceKernelPageSize, 0),
"KernelMemoryPoolDecommit(16KiB len)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelMemoryPoolReserveLen),
"KernelMunmap(pool reserve cleanup)");
std::printf("[host] %-48s ok\n", test);
}
void TestProsperoSampleMemoryPoolExpandCommit() {
const char* test = "ProsperoSampleMemoryPoolExpandCommit";
int64_t pool_offset = -1;
CheckFailed(test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), SceKernelPageSize,
SceKernelMemoryPoolAlignment, &pool_offset),
"KernelMemoryPoolExpand(16KiB len)");
CheckFailed(test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
SceKernelMemoryPoolExpandLen, SceKernelPageSize, &pool_offset),
"KernelMemoryPoolExpand(16KiB alignment)");
CheckFailed(test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
SceKernelMemoryPoolExpandLen, SceKernelMemoryPoolAlignment * 3, &pool_offset),
"KernelMemoryPoolExpand(non-power-of-two alignment)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
SceKernelMemoryPoolExpandLen, SceKernelMemoryPoolAlignment, &pool_offset),
"KernelMemoryPoolExpand");
Check(test,
pool_offset >= 0 &&
(static_cast<uint64_t>(pool_offset) & (SceKernelMemoryPoolAlignment - 1u)) == 0,
"expanded physical range is not 64 KiB aligned");
void* direct_alias = nullptr;
CheckFailed(test,
Libs::LibKernel::Memory::KernelMapDirectMemory(
&direct_alias, SceKernelMemoryPoolCommitLen, SceKernelProtCpuRw, 0, pool_offset,
SceKernelMemoryPoolAlignment),
"KernelMapDirectMemory(pool expansion)");
Libs::LibKernel::Memory::KernelMemoryPoolBlockStats stats {};
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolGetBlockStats(&stats, sizeof(stats)),
"KernelMemoryPoolGetBlockStats(expanded)");
Check(test,
stats.available_flushed_blocks ==
static_cast<int32_t>(SceKernelMemoryPoolExpandLen / SceKernelMemoryPoolAlignment),
"expanded pages were not added to the pool budget");
void* arena = reinterpret_cast<void*>(0x1000000000ull);
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolReserve(arena, SceKernelMemoryPoolReserveLen,
0, 0, &arena),
"KernelMemoryPoolReserve");
const auto base = reinterpret_cast<uint64_t>(arena);
const auto flexible_baseline = AvailableFlexibleMemory(test);
const auto commit_len = SceKernelMemoryPoolCommitLen * 2;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(arena, commit_len, SceKernelMtypeC,
SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit");
ExpectRange(test, Query(test, base), base, base + commit_len, SceKernelProtCpuRw, 0, 0, 1, 1);
Check(test, Libs::LibKernel::Memory::TestGuestAddressRangeIsOwned(base, commit_len),
"pooled commit escaped the guest owner");
Check(test, AvailableFlexibleMemory(test) == flexible_baseline,
"pooled commit consumed flexible memory instead of expanded direct "
"backing");
CheckFailed(test,
Libs::LibKernel::Memory::KernelCheckedReleaseDirectMemory(
pool_offset, SceKernelMemoryPoolExpandLen),
"KernelCheckedReleaseDirectMemory(committed pool expansion)");
constexpr uint64_t first_value = 0x504f4f4c4241434bull; // "POOLBACK"
constexpr uint64_t second_value = 0x5348415245444d45ull; // "SHAREDME"
*reinterpret_cast<uint64_t*>(base) = first_value;
*reinterpret_cast<uint64_t*>(base + SceKernelMemoryPoolCommitLen) = second_value;
uint64_t backing_read = 0;
Check(test, Libs::LibKernel::Memory::TryReadBacking(base, &backing_read, sizeof(backing_read)),
"TryReadBacking did not resolve pooled memory");
Check(test, backing_read == first_value,
"shared backing did not observe a pooled-memory CPU write");
CheckOk(
test,
Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, SceKernelMemoryPoolCommitLen, 0),
"KernelMemoryPoolDecommit(first page)");
ExpectRange(test, Query(test, base), base, base + SceKernelMemoryPoolCommitLen, 0, 0, 0, 1, 0);
ExpectRange(test, Query(test, base + SceKernelMemoryPoolCommitLen),
base + SceKernelMemoryPoolCommitLen, base + commit_len, SceKernelProtCpuRw, 0, 0, 1,
1);
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolGetBlockStats(&stats, sizeof(stats)),
"KernelMemoryPoolGetBlockStats(partially decommitted)");
Check(test,
stats.available_flushed_blocks ==
static_cast<int32_t>(SceKernelMemoryPoolExpandLen / SceKernelMemoryPoolAlignment -
1) &&
stats.allocated_flushed_blocks == 1,
"partial decommit returned the wrong number of pages to the expanded "
"pool");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(arena, SceKernelMemoryPoolCommitLen,
SceKernelMtypeC, SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(first-page recommit)");
Check(test,
*reinterpret_cast<const uint64_t*>(base) == first_value &&
*reinterpret_cast<const uint64_t*>(base + SceKernelMemoryPoolCommitLen) ==
second_value,
"partially recommitted pooled pages did not retain shared-backing "
"contents");
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, commit_len, 0),
"KernelMemoryPoolDecommit(cleanup)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelMemoryPoolReserveLen),
"KernelMunmap(pool reserve cleanup)");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(pool_offset,
SceKernelMemoryPoolExpandLen),
"KernelReleaseDirectMemory(pool expansion)");
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolGetBlockStats(&stats, sizeof(stats)),
"KernelMemoryPoolGetBlockStats(released)");
Check(test, stats.available_flushed_blocks == 0 && stats.allocated_flushed_blocks == 0,
"released expansion remained in the pool budget");
std::printf("[host] %-48s ok\n", test);
}
void TestFragmentedMemoryPoolBacking() {
const char* test = "FragmentedMemoryPoolBacking";
int64_t first_pool = -1;
int64_t direct_gap = -1;
int64_t second_pool = -1;
const auto direct_end =
static_cast<int64_t>(Libs::LibKernel::Memory::KernelGetDirectMemorySize());
CheckOk(
test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(0, direct_end, SceKernelMemoryPoolCommitLen,
SceKernelMemoryPoolAlignment, &first_pool),
"KernelMemoryPoolExpand(first)");
CheckOk(test,
Libs::LibKernel::Memory::KernelAllocateDirectMemory(
0, direct_end, SceKernelMemoryPoolCommitLen, SceKernelMemoryPoolAlignment,
SceKernelMtypeC, &direct_gap),
"KernelAllocateDirectMemory(gap)");
CheckOk(
test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(0, direct_end, SceKernelMemoryPoolCommitLen,
SceKernelMemoryPoolAlignment, &second_pool),
"KernelMemoryPoolExpand(second)");
Check(test,
first_pool + static_cast<int64_t>(SceKernelMemoryPoolCommitLen) == direct_gap &&
direct_gap + static_cast<int64_t>(SceKernelMemoryPoolCommitLen) == second_pool,
"test setup did not create nonadjacent pool expansions");
void* arena = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolReserve(nullptr, SceKernelMemoryPoolReserveLen,
0, 0, &arena),
"KernelMemoryPoolReserve");
const auto base = reinterpret_cast<uint64_t>(arena);
const auto commit_len = SceKernelMemoryPoolCommitLen * 2;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(arena, commit_len, SceKernelMtypeC,
SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(fragmented)");
CheckFailed(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(
reinterpret_cast<void*>(base + commit_len), SceKernelMemoryPoolCommitLen,
SceKernelMtypeC, SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(exhausted)");
ExpectRange(test, Query(test, base + commit_len), base + commit_len,
base + SceKernelMemoryPoolReserveLen, 0, 0, 0, 1, 0);
*reinterpret_cast<uint64_t*>(base) = 0x465241474d454e54ull; // "FRAGMENT"
*reinterpret_cast<uint64_t*>(base + SceKernelMemoryPoolCommitLen) = 0x504f4f4c50414745ull;
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, commit_len, 0),
"KernelMemoryPoolDecommit(fragmented)");
Libs::LibKernel::Memory::KernelMemoryPoolBlockStats stats {};
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolGetBlockStats(&stats, sizeof(stats)),
"KernelMemoryPoolGetBlockStats(fragmented decommit)");
Check(test, stats.available_flushed_blocks == 2 && stats.allocated_flushed_blocks == 0,
"fragmented decommit did not restore both pool pages");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(arena, commit_len, SceKernelMtypeC,
SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(fragmented recommit)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, commit_len),
"KernelMunmap(fragmented commit)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + commit_len,
SceKernelMemoryPoolReserveLen - commit_len),
"KernelMunmap(fragmented reserve remainder)");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(first_pool,
SceKernelMemoryPoolCommitLen),
"KernelReleaseDirectMemory(first pool)");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(second_pool,
SceKernelMemoryPoolCommitLen),
"KernelReleaseDirectMemory(second pool)");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(direct_gap,
SceKernelMemoryPoolCommitLen),
"KernelReleaseDirectMemory(gap)");
std::printf("[host] %-48s ok\n", test);
}
void TestMemoryPoolMultiRangeDecommit() {
const char* test = "MemoryPoolMultiRangeDecommit";
const auto expand_len = SceKernelMemoryPoolCommitLen * 2;
int64_t pool_offset = -1;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(), expand_len,
SceKernelMemoryPoolAlignment, &pool_offset),
"KernelMemoryPoolExpand");
void* arena = nullptr;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolReserve(nullptr, SceKernelMemoryPoolReserveLen,
0, 0, &arena),
"KernelMemoryPoolReserve");
const auto base = reinterpret_cast<uint64_t>(arena);
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(arena, SceKernelMemoryPoolCommitLen,
SceKernelMtypeC, SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(read-write)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(
reinterpret_cast<void*>(base + SceKernelMemoryPoolCommitLen),
SceKernelMemoryPoolCommitLen, SceKernelMtypeC, SceKernelProtCpuRead, 0),
"KernelMemoryPoolCommit(read-only)");
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, expand_len, 0),
"KernelMemoryPoolDecommit(different protections)");
const auto decommitted = Query(test, base);
Check(test,
decommitted.start <= base && decommitted.end >= base + expand_len &&
decommitted.is_pooled == 1 && decommitted.is_committed == 0,
"multi-range decommit did not restore the reserved pool span");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(
reinterpret_cast<void*>(base + SceKernelMemoryPoolCommitLen),
SceKernelMemoryPoolCommitLen, SceKernelMtypeC, SceKernelProtCpuRead, 0),
"KernelMemoryPoolCommit(mixed span)");
CheckOk(test, Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, expand_len, 0),
"KernelMemoryPoolDecommit(reserved and committed span)");
const auto mixed_decommitted = Query(test, base);
Check(test,
mixed_decommitted.start <= base && mixed_decommitted.end >= base + expand_len &&
mixed_decommitted.is_pooled == 1 && mixed_decommitted.is_committed == 0,
"mixed reserved/committed decommit left committed pages behind");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(arena, SceKernelMemoryPoolCommitLen,
SceKernelMtypeC, SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit(preflight prefix)");
CheckOk(test,
Libs::LibKernel::Memory::KernelMunmap(base + SceKernelMemoryPoolCommitLen,
SceKernelMemoryPoolCommitLen),
"KernelMunmap(preflight tail reserve)");
void* flexible_tail = reinterpret_cast<void*>(base + SceKernelMemoryPoolCommitLen);
CheckOk(test,
Libs::LibKernel::Memory::KernelMapNamedFlexibleMemory(
&flexible_tail, SceKernelMemoryPoolCommitLen, SceKernelProtCpuRead,
SceKernelMapFixed, "pool_invalid_tail"),
"KernelMapNamedFlexibleMemory(preflight tail)");
CheckFailed(test, Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, expand_len, 0),
"KernelMemoryPoolDecommit(invalid tail)");
ExpectRange(test, Query(test, base), base, base + SceKernelMemoryPoolCommitLen,
SceKernelProtCpuRw, 0, 0, 1, 1);
ExpectRange(test, Query(test, base + SceKernelMemoryPoolCommitLen),
base + SceKernelMemoryPoolCommitLen, base + expand_len, SceKernelProtCpuRead, 1, 0,
0, 1, "pool_invalid_tail");
CheckOk(
test,
Libs::LibKernel::Memory::KernelMemoryPoolDecommit(arena, SceKernelMemoryPoolCommitLen, 0),
"KernelMemoryPoolDecommit(preflight prefix cleanup)");
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelMemoryPoolReserveLen),
"KernelMunmap(pool reserve cleanup)");
CheckOk(test, Libs::LibKernel::Memory::KernelReleaseDirectMemory(pool_offset, expand_len),
"KernelReleaseDirectMemory(pool expansion)");
std::printf("[host] %-48s ok\n", test);
}
void TestMemoryPoolCommitDecommitQueryFlags() {
const char* test = "MemoryPoolCommitDecommitQueryFlags";
void* addr = nullptr;
int64_t pool_offset = -1;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolExpand(
0, Libs::LibKernel::Memory::KernelGetDirectMemorySize(),
SceKernelMemoryPoolCommitLen, SceKernelMemoryPoolAlignment, &pool_offset),
"KernelMemoryPoolExpand");
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolReserve(nullptr, SceKernelMemoryPoolReserveLen,
0, 0, &addr),
"KernelMemoryPoolReserve");
const auto base = reinterpret_cast<uint64_t>(addr);
const auto reserved = Query(test, base);
const bool reserved_ok = reserved.start <= base && base < reserved.end &&
reserved.is_pooled == 1 && reserved.is_committed == 0;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolCommit(reinterpret_cast<void*>(base),
SceKernelMemoryPoolCommitLen,
SceKernelMtypeC, SceKernelProtCpuRw, 0),
"KernelMemoryPoolCommit");
const auto committed = Query(test, base);
const bool committed_ok = committed.start == base &&
committed.end == base + SceKernelMemoryPoolCommitLen &&
committed.protection == SceKernelProtCpuRw &&
committed.is_pooled == 1 && committed.is_committed == 1;
CheckOk(test,
Libs::LibKernel::Memory::KernelMemoryPoolDecommit(reinterpret_cast<void*>(base),
SceKernelMemoryPoolCommitLen, 0),
"KernelMemoryPoolDecommit");
const auto decommitted = Query(test, base);
const bool decommitted_ok = decommitted.start <= base && base < decommitted.end &&
decommitted.is_pooled == 1 && decommitted.is_committed == 0;
CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelMemoryPoolReserveLen),
"KernelMunmap(pool reserve cleanup)");
Check(test, reserved_ok, "pool reserve should query as pooled/uncommitted");
Check(test, committed_ok, "pool commit should query as pooled/committed");
Check(test, decommitted_ok, "pool decommit should return to pooled/uncommitted");
CheckOk(test,
Libs::LibKernel::Memory::KernelReleaseDirectMemory(pool_offset,
SceKernelMemoryPoolCommitLen),
"KernelReleaseDirectMemory(pool expansion)");
std::printf("[host] %-48s ok\n", test);
}
void TestProgramMemoryAllocationAndProtection() {
const char* test = "ProgramMemoryAllocationAndProtection";
const auto size = SceKernelPageSize * 3;
const auto base = Libs::LibKernel::Memory::AllocateProgramMemory(
0x900000000, size, Common::VirtualMemory::Mode::ReadWrite, "program_test");
Check(test, base != 0, "program guest allocation failed");
Check(test, Libs::LibKernel::Memory::TestGuestAddressRangeIsOwned(base, size),
"program allocation escaped the guest owner");
ExpectRange(test, Query(test, base), base, base + size,
SceKernelProtCpuRead | SceKernelProtCpuRw, 0, 0, 0, 1, "program_test");
Check(test,
Libs::LibKernel::Memory::ProtectGuestMemory(base, SceKernelPageSize,
Common::VirtualMemory::Mode::Read),
"ProtectGuestMemory(first page) failed");
ExpectRange(test, Query(test, base), base, base + SceKernelPageSize, SceKernelProtCpuRead, 0, 0,
0, 1, "program_test");
Common::VirtualMemory::Mode previous_mode = Common::VirtualMemory::Mode::NoAccess;
Check(test,
Libs::LibKernel::Memory::ProtectGuestMemory(
base, SceKernelPageSize, Common::VirtualMemory::Mode::ReadWrite, &previous_mode),
"ProtectGuestMemory(tracked restore) failed");
Check(test, previous_mode == Common::VirtualMemory::Mode::Read,
"semantic guest protection did not preserve its tracked old mode");
CheckOk(test,
Libs::LibKernel::Memory::KernelMprotect(
reinterpret_cast<void*>(base + SceKernelPageSize - 0x10), 0x20,
SceKernelProtCpuRead | SceKernelProtCpuRw),
"KernelMprotect(program split span)");
ExpectRange(test, Query(test, base), base, base + size,
SceKernelProtCpuRead | SceKernelProtCpuRw, 0, 0, 0, 1, "program_test");
Check(test,
Libs::LibKernel::Memory::ProtectGuestMemory(
base + SceKernelPageSize * 2, SceKernelPageSize, Common::VirtualMemory::Mode::Read),
"ProtectGuestMemory(last page) failed");
ExpectRange(test, Query(test, base + SceKernelPageSize * 2), base + SceKernelPageSize * 2,
base + size, SceKernelProtCpuRead, 0, 0, 0, 1, "program_test");
Check(test, Libs::LibKernel::Memory::FreeGuestMemory(base, size), "program guest free failed");
ExpectUnmapped(test, base);
std::printf("[host] %-48s ok\n", test);
}
void TestModuleRelocationUsesWritableHostMapping() {
const char* test = "ModuleRelocationUsesWritableHostMapping";
Check(test, Loader::TestModuleRelocationUsesWritableHostMapping(),
"module relocation did not retain writable host memory and semantic guest protection");
std::printf("[host] %-48s ok\n", test);
}
} // namespace
int main() {
InitSubsystems();
RunTest(TestProsperoArgumentAndInfoSizeContracts);
RunTest(TestGuestAddressSpaceOwnsReservationsBeforeBacking);
RunTest(TestGuestAddressSpaceHasNoFixedFallback);
RunTest(TestGuestFreeRangeSearchDoesNotUnderflow);
RunTest(TestFlexibleMemoryCapacityIsBootFixed);
RunTest(TestFlexibleMemoryUsesSharedBacking);
RunTest(TestFlexibleDmemCompatAndAlignmentFlags);
RunTest(TestFlexibleNoCoalescePreservesBoundaries);
RunTest(TestFlexibleMemoryReuseIsZeroFilled);
RunTest(TestGuestStackUsesPrivateOwnerMemoryAndCache);
RunTest(TestMainEntryUsesGuestStackAndDisablesHostChecks);
RunTest(TestFragmentedBackingUnmapRollback);
RunTest(TestRuntimeMemoryOwnerLifecycle);
RunTest(TestFlexibleMapQueryAndWholeMunmap);
RunTest(TestPartialFlexibleMunmapAndFindNext);
RunTest(TestReserveMapFixedAndNoOverwrite);
RunTest(TestFixedNoOverwriteRejectsReservedRange);
RunTest(TestReleasedReserveCanBeReused);
RunTest(TestMunmapAcrossAdjacentFlexibleMappings);
RunTest(TestDirectMapQueryOffsetAndPartialMunmap);
RunTest(TestDirectPartialProtectUnmapPreservesNeighbors);
RunTest(TestDirectMapValidationBeforeOwnerMutation);
RunTest(TestDirectReleaseRollbackRestoresOwnerMapping);
RunTest(TestDirectReleaseContracts);
RunTest(TestNonzeroDirectOffsetAliasesSharedBacking);
RunTest(TestDirectMapAcrossContiguousAllocations);
RunTest(TestDirectPhysicalFreeRangeReuseAndCoalescing);
RunTest(TestDirectAlignmentStaysWithinSearchRange);
RunTest(TestDefaultDirectMapUsesSystemAddressRange);
RunTest(TestLargeDirectMapAliasesAcrossChunks);
RunTest(TestDirectMapUnmapReusesHostAddress);
RunTest(TestFixedReserveReplacesPartialDirectMapping);
RunTest(TestFixedReserveRollbackConsumesRestoredPlaceholder);
RunTest(TestFixedReserveRollbackSkipsUntouchedChunks);
RunTest(TestFixedReserveRangeAddRollbackKeepsPlaceholder);
RunTest(TestLargeHintedReserveHostsSmallDirectMap);
RunTest(TestMemoryPoolAlignmentContracts);
RunTest(TestProsperoSampleMemoryPoolExpandCommit);
RunTest(TestFragmentedMemoryPoolBacking);
RunTest(TestMemoryPoolMultiRangeDecommit);
RunTest(TestMemoryPoolCommitDecommitQueryFlags);
RunTest(TestProgramMemoryAllocationAndProtection);
RunTest(TestModuleRelocationUsesWritableHostMapping);
if (g_failed_tests != 0) {
std::printf("VirtualMemoryAllocationTests: %d case(s) failed\n", g_failed_tests);
return 1;
}
std::printf("VirtualMemoryAllocationTests: all cases passed\n");
return 0;
}
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