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spinlocks, annoyances with organistaion
spinlocks, annoyances with organistaion
Signed-off-by: lizzie <lizzie@eden-emu.dev>dynarmic-ppc64
lizzie
2 months ago
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GPG Key ID: 287378CADCAB13
16 changed files with 356 additions and 135 deletions
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107externals/powah/data2code.c
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14externals/powah/powah_emit.hpp
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20externals/powah/powah_gen_base.hpp
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4src/dynarmic/src/dynarmic/CMakeLists.txt
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4src/dynarmic/src/dynarmic/backend/ppc64/a32_core.h
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16src/dynarmic/src/dynarmic/backend/ppc64/a32_interface.cpp
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15src/dynarmic/src/dynarmic/backend/ppc64/a64_core.h
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84src/dynarmic/src/dynarmic/backend/ppc64/a64_interface.cpp
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8src/dynarmic/src/dynarmic/backend/ppc64/abi.h
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2src/dynarmic/src/dynarmic/backend/ppc64/emit_ppc64_data_processing.cpp
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50src/dynarmic/src/dynarmic/backend/ppc64/exclusive_monitor.cpp
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26src/dynarmic/src/dynarmic/backend/ppc64/hostloc.h
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43src/dynarmic/src/dynarmic/backend/ppc64/reg_alloc.cpp
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14src/dynarmic/src/dynarmic/backend/ppc64/reg_alloc.h
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71src/dynarmic/src/dynarmic/common/spin_lock_ppc64.cpp
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13src/dynarmic/src/dynarmic/common/spin_lock_ppc64.h
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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include "dynarmic/interface/exclusive_monitor.h"
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#include <algorithm>
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#include "dynarmic/common/assert.h"
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namespace Dynarmic { |
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ExclusiveMonitor::ExclusiveMonitor(std::size_t processor_count) |
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: exclusive_addresses(processor_count, INVALID_EXCLUSIVE_ADDRESS), exclusive_values(processor_count) {} |
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size_t ExclusiveMonitor::GetProcessorCount() const { |
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return exclusive_addresses.size(); |
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} |
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void ExclusiveMonitor::Lock() { |
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lock.Lock(); |
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} |
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void ExclusiveMonitor::Unlock() { |
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lock.Unlock(); |
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} |
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bool ExclusiveMonitor::CheckAndClear(std::size_t processor_id, VAddr address) { |
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const VAddr masked_address = address & RESERVATION_GRANULE_MASK; |
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Lock(); |
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if (exclusive_addresses[processor_id] != masked_address) { |
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Unlock(); |
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return false; |
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} |
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for (VAddr& other_address : exclusive_addresses) |
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if (other_address == masked_address) |
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other_address = INVALID_EXCLUSIVE_ADDRESS; |
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return true; |
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} |
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void ExclusiveMonitor::Clear() { |
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Lock(); |
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std::fill(exclusive_addresses.begin(), exclusive_addresses.end(), INVALID_EXCLUSIVE_ADDRESS); |
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Unlock(); |
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} |
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void ExclusiveMonitor::ClearProcessor(size_t processor_id) { |
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Lock(); |
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exclusive_addresses[processor_id] = INVALID_EXCLUSIVE_ADDRESS; |
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Unlock(); |
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} |
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} // namespace Dynarmic
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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project |
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// SPDX-License-Identifier: GPL-3.0-or-later |
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#pragma once |
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#include "dynarmic/common/common_types.h" |
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namespace Dynarmic::Backend::PPC64 { |
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enum class HostLoc : uint8_t { |
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R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, |
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R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, |
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R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, |
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R30, R31, |
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FR0, FR1, FR2, FR3, FR4, FR5, FR6, FR7, FR8, FR9, |
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FR10, FR11, FR12, FR13, FR14, FR15, FR16, FR17, FR18, FR19, |
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FR20, FR21, FR22, FR23, FR24, FR25, FR26, FR27, FR28, FR29, |
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FR30, FR31, |
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VR0, VR1, VR2, VR3, VR4, VR5, VR6, VR7, VR8, VR9, |
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VR10, VR11, VR12, VR13, VR14, VR15, VR16, VR17, VR18, VR19, |
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VR20, VR21, VR22, VR23, VR24, VR25, VR26, VR27, VR28, VR29, |
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VR30, VR31, |
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FirstSpill, |
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}; |
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} // namespace Dynarmic::Backend::PPC64 |
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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include <mutex>
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#include <sys/mman.h>
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#include <powah_emit.hpp>
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#include "dynarmic/backend/ppc64/abi.h"
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#include "dynarmic/backend/ppc64/hostloc.h"
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#include "dynarmic/common/spin_lock.h"
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#include "dynarmic/common/assert.h"
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namespace Dynarmic { |
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/*
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void acquire(atomic_flag* lock) { |
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while(atomic_flag_test_and_set_explicit( lock, memory_order_acquire)) |
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; |
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} |
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*/ |
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void EmitSpinLockLock(powah::Context& code, powah::GPR const ptr, powah::GPR const tmp) { |
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} |
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/*
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void release(atomic_flag* lock) { |
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atomic_flag_clear_explicit(lock, memory_order_release); |
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} |
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*/ |
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void EmitSpinLockUnlock(powah::Context& code, powah::GPR const ptr, powah::GPR const tmp) { |
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} |
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namespace { |
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struct SpinLockImpl { |
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void Initialize(); |
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powah::Context code; |
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void* page = nullptr; |
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void (*lock)(volatile int*); |
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void (*unlock)(volatile int*); |
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}; |
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std::once_flag flag; |
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SpinLockImpl impl; |
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void SpinLockImpl::Initialize() { |
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page = mmap(nullptr, 4096, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0); |
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ASSERT(page != nullptr); |
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code = powah::Context(page, 4096); |
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lock = reinterpret_cast<void (*)(volatile int*)>(code.base); |
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EmitSpinLockLock(code, Backend::PPC64::ABI_PARAM1, Backend::PPC64::ABI_PARAM2); |
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code.BLR(); |
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unlock = reinterpret_cast<void (*)(volatile int*)>(code.base); |
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EmitSpinLockUnlock(code, Backend::PPC64::ABI_PARAM1, Backend::PPC64::ABI_PARAM2); |
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code.BLR(); |
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// TODO: free the page, rework the stupid spinlock API
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} |
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} // namespace
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void SpinLock::Lock() noexcept { |
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std::call_once(flag, &SpinLockImpl::Initialize, impl); |
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impl.lock(&storage); |
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} |
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void SpinLock::Unlock() noexcept { |
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std::call_once(flag, &SpinLockImpl::Initialize, impl); |
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impl.unlock(&storage); |
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} |
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} // namespace Dynarmic
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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project |
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// SPDX-License-Identifier: GPL-3.0-or-later |
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#pragma once |
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#include <powah_emit.hpp> |
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namespace Dynarmic { |
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void EmitSpinLockLock(powah::Context& code, powah::GPR const ptr, powah::GPR const tmp); |
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void EmitSpinLockUnlock(powah::Context& code, powah::GPR const ptr, powah::GPR const tmp); |
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} // namespace Dynarmic |
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