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Implement syncOnAddress ABIs (perf improvement)

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This commit is contained in:
nmzik
2026-08-04 21:24:12 +02:00
parent a9ddd44d73
commit 00a5dd32c0
5 changed files with 617 additions and 19 deletions
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src/libs/libKernel.cpp
+33 -19
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@@ -13,6 +13,7 @@
#include "kernel/memory.h"
#include "kernel/pthread.h"
#include "kernel/semaphore.h"
#include "kernel/syncOnAddress.h"
#include "libs/errno.h"
#include "libs/libs.h"
#include "libs/network.h"
@@ -2134,26 +2135,37 @@ uint64_t KYTY_SYSV_ABI cfwBSQyr5Ys(uint64_t a1, uint64_t a2, uint64_t a3, uint64
return 0;
}
uint64_t KYTY_SYSV_ABI KernelSyncOnAddressV1(uint64_t op, uint64_t address, uint64_t value,
uint64_t size, uint64_t timeout, uint64_t flags) {
static std::atomic_uint32_t log_count = 0;
const auto index = log_count.fetch_add(1, std::memory_order_relaxed);
if (index < 16) {
LOGF("\t libkernel_sync_on_address_v1: op=0x%016" PRIx64 ", address=0x%016" PRIx64
", value=0x%016" PRIx64 ", size=0x%016" PRIx64 ", timeout=0x%016" PRIx64
", flags=0x%016" PRIx64 "\n",
op, address, value, size, timeout, flags);
static void LogExperimentalSyncOnAddress(std::atomic_bool& logged, const char* function_name) {
if (!logged.exchange(true, std::memory_order_relaxed)) {
::printf("WARNING: %s is experimental\n", function_name);
LOGF("WARNING: %s is experimental\n", function_name);
}
}
if (op != 0 && address == 0 && value == 0 && size == 0) {
// This unsupported form is used as a yield/wait by some Unity jobs.
// SleepMicro() uses a sub-millisecond busy wait on Windows, which can
// pin every worker thread when the guest polls this path.
Common::Thread::Sleep(timeout == 0 ? 1 : 2);
}
int KYTY_SYSV_ABI KernelSyncOnAddressWait(volatile uint32_t* address, uint32_t expected,
const uint32_t* timeout_micros) {
return LibKernel::SyncOnAddress::Wait32(address, expected, timeout_micros,
LibKernel::KernelDispatchPendingSignalForCurrentThread);
}
return 0;
int KYTY_SYSV_ABI KernelSyncOnAddressWait32(volatile uint32_t* address, uint32_t expected,
const uint32_t* timeout_micros) {
static std::atomic_bool logged {false};
LogExperimentalSyncOnAddress(logged, "sceKernelSyncOnAddressWait32");
return LibKernel::SyncOnAddress::Wait32(address, expected, timeout_micros,
LibKernel::KernelDispatchPendingSignalForCurrentThread);
}
int KYTY_SYSV_ABI KernelSyncOnAddressWait64(volatile uint64_t* address, uint64_t expected,
const uint32_t* timeout_micros) {
static std::atomic_bool logged {false};
LogExperimentalSyncOnAddress(logged, "sceKernelSyncOnAddressWait64");
return LibKernel::SyncOnAddress::Wait64(address, expected, timeout_micros,
LibKernel::KernelDispatchPendingSignalForCurrentThread);
}
int KYTY_SYSV_ABI KernelSyncOnAddressWake(volatile void* address, int32_t count) {
return LibKernel::SyncOnAddress::Wake(address, count);
}
LIB_DEFINE(InitLibKernel_1_Posix) {
@@ -3405,8 +3417,10 @@ LIB_DEFINE(InitLibKernel_1) {
LIB_FUNC("Xjoosiw+XPI", LibKernel::KernelUuidCreate);
LIB_FUNC("DLORcroUqbc", LibKernel::KernelGetOpenPsId);
LIB_FUNC("zE-wXIZjLoM", LibKernel::KernelDebugRaiseExceptionOnReleaseMode);
LIB_FUNC("Hc4CaR6JBL0", Posix::KernelSyncOnAddressV1);
LIB_FUNC("q2y-wDIVWZA", Posix::KernelSyncOnAddressV1);
LIB_FUNC("Hc4CaR6JBL0", Posix::KernelSyncOnAddressWait);
LIB_FUNC("B2n8aDorSH4", Posix::KernelSyncOnAddressWait32);
LIB_FUNC("PZQhiiLXRFs", Posix::KernelSyncOnAddressWait64);
LIB_FUNC("q2y-wDIVWZA", Posix::KernelSyncOnAddressWake);
AddLibkernelUnityFunc(s, "Qhv5ARAoOEc",
reinterpret_cast<uint64_t>(LibKernel::KernelRemoveExceptionHandler),