[dynarmic] use ARCHITECTURE_ macros instead of MCL ones

Signed-off-by: lizzie <lizzie@eden-emu.dev>

src/dynarmic/src/dynarmic/backend/exception_handler.h

@@ -15,15 +15,15 @@
 #include <mcl/macro/architecture.hpp>
 #include "dynarmic/common/common_types.h"
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 namespace Dynarmic::Backend::X64 {
 class BlockOfCode;
 }  // namespace Dynarmic::Backend::X64
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 namespace oaknut {
 class CodeBlock;
 }  // namespace oaknut
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
 namespace Dynarmic::Backend::RV64 {
 class CodeBlock;
 }  // namespace Dynarmic::Backend::RV64
@@ -33,16 +33,16 @@ class CodeBlock;
 
 namespace Dynarmic::Backend {
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 struct FakeCall {
     u64 call_rip;
     u64 ret_rip;
 };
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 struct FakeCall {
     u64 call_pc;
 };
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
 struct FakeCall {
 };
 #else
@@ -54,11 +54,11 @@ public:
     ExceptionHandler();
     ~ExceptionHandler();
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
     void Register(X64::BlockOfCode& code);
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
     void Register(oaknut::CodeBlock& mem, std::size_t mem_size);
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
     void Register(RV64::CodeBlock& mem, std::size_t mem_size);
 #else
 #    error "Invalid architecture"

src/dynarmic/src/dynarmic/backend/exception_handler_generic.cpp

@@ -13,15 +13,15 @@ struct ExceptionHandler::Impl final {
 ExceptionHandler::ExceptionHandler() = default;
 ExceptionHandler::~ExceptionHandler() = default;
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 void ExceptionHandler::Register(X64::BlockOfCode&) {
     // Do nothing
 }
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 void ExceptionHandler::Register(oaknut::CodeBlock&, std::size_t) {
     // Do nothing
 }
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
 void ExceptionHandler::Register(RV64::CodeBlock&, std::size_t) {
     // Do nothing
 }

src/dynarmic/src/dynarmic/backend/exception_handler_macos.cpp

@@ -25,7 +25,7 @@
 
 #include "dynarmic/backend/exception_handler.h"
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 
 #    include "dynarmic/backend/x64/block_of_code.h"
 #    define mig_external extern "C"
@@ -36,7 +36,7 @@
 
 using dynarmic_thread_state_t = x86_thread_state64_t;
 
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 
 #    include <oaknut/code_block.hpp>
 #    define mig_external extern "C"
@@ -133,7 +133,7 @@ void MachHandler::MessagePump() {
     }
 }
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 kern_return_t MachHandler::HandleRequest(x86_thread_state64_t* ts) {
     std::lock_guard<std::mutex> guard(code_block_infos_mutex);
 
@@ -151,7 +151,7 @@ kern_return_t MachHandler::HandleRequest(x86_thread_state64_t* ts) {
 
     return KERN_SUCCESS;
 }
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 kern_return_t MachHandler::HandleRequest(arm_thread_state64_t* ts) {
     std::lock_guard<std::mutex> guard(code_block_infos_mutex);
 
@@ -269,13 +269,13 @@ private:
 ExceptionHandler::ExceptionHandler() = default;
 ExceptionHandler::~ExceptionHandler() = default;
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 void ExceptionHandler::Register(X64::BlockOfCode& code) {
     const u64 code_begin = mcl::bit_cast<u64>(code.getCode());
     const u64 code_end = code_begin + code.GetTotalCodeSize();
     impl = std::make_unique<Impl>(code_begin, code_end);
 }
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 void ExceptionHandler::Register(oaknut::CodeBlock& mem, std::size_t size) {
     const u64 code_begin = mcl::bit_cast<u64>(mem.ptr());
     const u64 code_end = code_begin + size;

src/dynarmic/src/dynarmic/backend/exception_handler_macos_mig.c

@@ -5,9 +5,9 @@
 
 #include <mcl/macro/architecture.hpp>
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 #    include "dynarmic/backend/x64/mig/mach_exc_server.c"
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 #    include "dynarmic/backend/arm64/mig/mach_exc_server.c"
 #else
 #    error "Invalid architecture"

src/dynarmic/src/dynarmic/backend/exception_handler_posix.cpp

@@ -7,36 +7,20 @@
  */
 
 #include <cstring>
-#include <functional>
-#include <memory>
 #include <mutex>
-#include <shared_mutex>
 #include <optional>
-#include <sys/mman.h>
-#ifdef __APPLE__
-#    include <signal.h>
-#    include <sys/ucontext.h>
-#else
-#    include <signal.h>
-#    ifndef __OpenBSD__
-#        include <ucontext.h>
-#    endif
-#    ifdef __sun__
-#        include <sys/regset.h>
-#    endif
-#endif
-
-#include <ankerl/unordered_dense.h>
-
 #include "dynarmic/backend/exception_handler.h"
+#include "dynarmic/common/assert.h"
+#include "dynarmic/common/context.h"
+#include <mcl/bit_cast.hpp>
 #include "dynarmic/common/common_types.h"
-#if defined(MCL_ARCHITECTURE_X86_64)
-#    include "dynarmic/backend/x64/block_of_code.h"
-#elif defined(MCL_ARCHITECTURE_ARM64)
-#    include <oaknut/code_block.hpp>
 
+#if defined(ARCHITECTURE_x86_64)
+#    include "dynarmic/backend/x64/block_of_code.h"
+#elif defined(ARCHITECTURE_arm64)
+#    include <oaknut/code_block.hpp>
 #    include "dynarmic/backend/arm64/abi.h"
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
 #    include "dynarmic/backend/riscv64/code_block.h"
 #else
 #    error "Invalid architecture"
@@ -127,41 +111,68 @@ void RegisterHandler() {
     }
 }
 
-void SigHandler::SigAction(int sig, siginfo_t* info, void* raw_context) {
-    DEBUG_ASSERT(sig == SIGSEGV || sig == SIGBUS);
-#ifndef MCL_ARCHITECTURE_RISCV
-    ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(raw_context);
-#ifndef __OpenBSD__
-    auto& mctx = ucontext->uc_mcontext;
-#endif
-#endif
+SigHandler::SigHandler() {
+    const size_t signal_stack_size = std::max<size_t>(SIGSTKSZ, 2 * 1024 * 1024);
 
-#if defined(MCL_ARCHITECTURE_X86_64)
-#    if defined(__APPLE__)
-#        define CTX_RIP (mctx->__ss.__rip)
-#        define CTX_RSP (mctx->__ss.__rsp)
-#    elif defined(__linux__)
-#        define CTX_RIP (mctx.gregs[REG_RIP])
-#        define CTX_RSP (mctx.gregs[REG_RSP])
-#    elif defined(__FreeBSD__)
-#        define CTX_RIP (mctx.mc_rip)
-#        define CTX_RSP (mctx.mc_rsp)
-#    elif defined(__NetBSD__)
-#        define CTX_RIP (mctx.__gregs[_REG_RIP])
-#        define CTX_RSP (mctx.__gregs[_REG_RSP])
-#    elif defined(__OpenBSD__)
-#        define CTX_RIP (ucontext->sc_rip)
-#        define CTX_RSP (ucontext->sc_rsp)
-#    elif defined(__sun__)
-#        define CTX_RIP (mctx.gregs[REG_RIP])
-#        define CTX_RSP (mctx.gregs[REG_RSP])
-#    else
-#        error "Unknown platform"
-#    endif
+    signal_stack_memory = std::malloc(signal_stack_size);
+
+    stack_t signal_stack;
+    signal_stack.ss_sp = signal_stack_memory;
+    signal_stack.ss_size = signal_stack_size;
+    signal_stack.ss_flags = 0;
+    if (sigaltstack(&signal_stack, nullptr) != 0) {
+        fmt::print(stderr, "dynarmic: POSIX SigHandler: init failure at sigaltstack\n");
+        supports_fast_mem = false;
+        return;
+    }
+
+    struct sigaction sa;
+    sa.sa_handler = nullptr;
+    sa.sa_sigaction = &SigHandler::SigAction;
+    sa.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_RESTART;
+    sigemptyset(&sa.sa_mask);
+    if (sigaction(SIGSEGV, &sa, &old_sa_segv) != 0) {
+        fmt::print(stderr, "dynarmic: POSIX SigHandler: could not set SIGSEGV handler\n");
+        supports_fast_mem = false;
+        return;
+    }
+#ifdef __APPLE__
+    if (sigaction(SIGBUS, &sa, &old_sa_bus) != 0) {
+        fmt::print(stderr, "dynarmic: POSIX SigHandler: could not set SIGBUS handler\n");
+        supports_fast_mem = false;
+        return;
+    }
+#endif
+}
+
+SigHandler::~SigHandler() {
+    std::free(signal_stack_memory);
+}
+
+void SigHandler::AddCodeBlock(CodeBlockInfo cbi) {
+    std::lock_guard<std::mutex> guard(code_block_infos_mutex);
+    if (auto const iter = FindCodeBlockInfo(cbi.code_begin); iter != code_block_infos.end())
+        code_block_infos.erase(iter);
+    code_block_infos.push_back(cbi);
+}
+
+void SigHandler::RemoveCodeBlock(u64 host_pc) {
+    std::lock_guard<std::mutex> guard(code_block_infos_mutex);
+    const auto iter = FindCodeBlockInfo(host_pc);
+    if (iter != code_block_infos.end())
+        code_block_infos.erase(iter);
+}
+
+void SigHandler::SigAction(int sig, siginfo_t* info, void* raw_context) {
+    ASSERT(sig == SIGSEGV || sig == SIGBUS);
+    CTX_DECLARE(raw_context);
+#if defined(ARCHITECTURE_x86_64)
     {
-        std::shared_lock guard(sig_handler->code_block_infos_mutex);
-        if (auto const iter = sig_handler->FindCodeBlockInfo(CTX_RIP); iter != sig_handler->code_block_infos.end()) {
-            FakeCall fc = iter->second.cb(CTX_RIP);
+        std::lock_guard<std::mutex> guard(sig_handler->code_block_infos_mutex);
+
+        const auto iter = sig_handler->FindCodeBlockInfo(CTX_RIP);
+        if (iter != sig_handler->code_block_infos.end()) {
+            FakeCall fc = iter->cb(CTX_RIP);
             CTX_RSP -= sizeof(u64);
             *mcl::bit_cast<u64*>(CTX_RSP) = fc.ret_rip;
             CTX_RIP = fc.call_rip;
@@ -169,58 +180,19 @@ void SigHandler::SigAction(int sig, siginfo_t* info, void* raw_context) {
         }
     }
     fmt::print(stderr, "Unhandled {} at rip {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_RIP);
-#elif defined(MCL_ARCHITECTURE_ARM64)
-#    if defined(__APPLE__)
-#        define CTX_PC (mctx->__ss.__pc)
-#        define CTX_SP (mctx->__ss.__sp)
-#        define CTX_LR (mctx->__ss.__lr)
-#        define CTX_X(i) (mctx->__ss.__x[i])
-#        define CTX_Q(i) (mctx->__ns.__v[i])
-#    elif defined(__linux__)
-#        define CTX_PC (mctx.pc)
-#        define CTX_SP (mctx.sp)
-#        define CTX_LR (mctx.regs[30])
-#        define CTX_X(i) (mctx.regs[i])
-#        define CTX_Q(i) (fpctx->vregs[i])
-    [[maybe_unused]] const auto fpctx = [&mctx] {
-        _aarch64_ctx* header = (_aarch64_ctx*)&mctx.__reserved;
-        while (header->magic != FPSIMD_MAGIC) {
-            ASSERT(header->magic && header->size);
-            header = (_aarch64_ctx*)((char*)header + header->size);
-        }
-        return (fpsimd_context*)header;
-    }();
-#    elif defined(__FreeBSD__)
-#        define CTX_PC (mctx.mc_gpregs.gp_elr)
-#        define CTX_SP (mctx.mc_gpregs.gp_sp)
-#        define CTX_LR (mctx.mc_gpregs.gp_lr)
-#        define CTX_X(i) (mctx.mc_gpregs.gp_x[i])
-#        define CTX_Q(i) (mctx.mc_fpregs.fp_q[i])
-#    elif defined(__NetBSD__)
-#        define CTX_PC (mctx.mc_gpregs.gp_elr)
-#        define CTX_SP (mctx.mc_gpregs.gp_sp)
-#        define CTX_LR (mctx.mc_gpregs.gp_lr)
-#        define CTX_X(i) (mctx.mc_gpregs.gp_x[i])
-#        define CTX_Q(i) (mctx.mc_fpregs.fp_q[i])
-#    elif defined(__OpenBSD__)
-#        define CTX_PC (ucontext->sc_elr)
-#        define CTX_SP (ucontext->sc_sp)
-#        define CTX_LR (ucontext->sc_lr)
-#        define CTX_X(i) (ucontext->sc_x[i])
-#        define CTX_Q(i) (ucontext->sc_q[i])
-#    else
-#        error "Unknown platform"
-#    endif
+#elif defined(ARCHITECTURE_arm64)
+    CTX_DECLARE(raw_context);
     {
-        std::shared_lock guard(sig_handler->code_block_infos_mutex);
-        if (const auto iter = sig_handler->FindCodeBlockInfo(CTX_PC); iter != sig_handler->code_block_infos.end()) {
-            FakeCall fc = iter->second.cb(CTX_PC);
+        std::lock_guard<std::mutex> guard(sig_handler->code_block_infos_mutex);
+        const auto iter = sig_handler->FindCodeBlockInfo(CTX_PC);
+        if (iter != sig_handler->code_block_infos.end()) {
+            FakeCall fc = iter->cb(CTX_PC);
             CTX_PC = fc.call_pc;
             return;
         }
     }
     fmt::print(stderr, "Unhandled {} at pc {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_PC);
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
     ASSERT_FALSE("Unimplemented");
 #else
 #    error "Invalid architecture"
@@ -269,15 +241,15 @@ private:
 ExceptionHandler::ExceptionHandler() = default;
 ExceptionHandler::~ExceptionHandler() = default;
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 void ExceptionHandler::Register(X64::BlockOfCode& code) {
     impl = std::make_unique<Impl>(mcl::bit_cast<u64>(code.getCode()), code.GetTotalCodeSize());
 }
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 void ExceptionHandler::Register(oaknut::CodeBlock& mem, std::size_t size) {
     impl = std::make_unique<Impl>(mcl::bit_cast<u64>(mem.ptr()), size);
 }
-#elif defined(MCL_ARCHITECTURE_RISCV)
+#elif defined(ARCHITECTURE_riscv64)
 void ExceptionHandler::Register(RV64::CodeBlock& mem, std::size_t size) {
     impl = std::make_unique<Impl>(mcl::bit_cast<u64>(mem.ptr<u64>()), size);
 }

src/dynarmic/src/dynarmic/backend/exception_handler_windows.cpp

@@ -5,9 +5,9 @@
 
 #include <mcl/macro/architecture.hpp>
 
-#if defined(MCL_ARCHITECTURE_X86_64)
+#if defined(ARCHITECTURE_x86_64)
 #    include "dynarmic/backend/x64/exception_handler_windows.cpp"
-#elif defined(MCL_ARCHITECTURE_ARM64)
+#elif defined(ARCHITECTURE_arm64)
 #    include "dynarmic/backend/exception_handler_generic.cpp"
 #else
 #    error "Invalid architecture"

src/dynarmic/src/dynarmic/common/context.h

@@ -0,0 +1,120 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#ifdef __APPLE__
+#    include <signal.h>
+#    include <sys/ucontext.h>
+#else
+#    include <signal.h>
+#    ifndef __OpenBSD__
+#        include <ucontext.h>
+#    endif
+#    ifdef __sun__
+#        include <sys/regset.h>
+#    endif
+#    ifdef __linux__
+#       include <sys/syscall.h>
+#    endif
+#endif
+
+#ifdef ARCHITECTURE_x86_64
+#   ifdef __OpenBSD__
+#       define CTX_DECLARE(raw_context) ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(raw_context);
+#   else
+#       define CTX_DECLARE(raw_context) \
+        ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(raw_context);  \
+        [[maybe_unused]] auto& mctx = ucontext->uc_mcontext;
+#   endif
+#elif defined(ARCHITECTURE_arm64)
+#   ifdef __OpenBSD__
+#       define CTX_DECLARE(raw_context) ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(raw_context);
+#   else
+#       define CTX_DECLARE(raw_context) \
+        ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(raw_context);  \
+        [[maybe_unused]] auto& mctx = ucontext->uc_mcontext; \
+        [[maybe_unused]] const auto fpctx = GetFloatingPointState(mctx);
+#   endif
+#endif
+
+#if defined(ARCHITECTURE_x86_64)
+#    if defined(__APPLE__)
+#        define CTX_RIP (mctx->__ss.__rip)
+#        define CTX_RSP (mctx->__ss.__rsp)
+#    elif defined(__linux__)
+#        define CTX_RIP (mctx.gregs[REG_RIP])
+#        define CTX_RSP (mctx.gregs[REG_RSP])
+#    elif defined(__FreeBSD__)
+#        define CTX_RIP (mctx.mc_rip)
+#        define CTX_RSP (mctx.mc_rsp)
+#    elif defined(__NetBSD__)
+#        define CTX_RIP (mctx.__gregs[_REG_RIP])
+#        define CTX_RSP (mctx.__gregs[_REG_RSP])
+#    elif defined(__OpenBSD__)
+#        define CTX_RIP (ucontext->sc_rip)
+#        define CTX_RSP (ucontext->sc_rsp)
+#    elif defined(__sun__)
+#        define CTX_RIP (mctx.gregs[REG_RIP])
+#        define CTX_RSP (mctx.gregs[REG_RSP])
+#    else
+#        error "Unknown platform"
+#    endif
+#elif defined(ARCHITECTURE_arm64)
+#    if defined(__APPLE__)
+#        define CTX_PC (mctx->__ss.__pc)
+#        define CTX_SP (mctx->__ss.__sp)
+#        define CTX_LR (mctx->__ss.__lr)
+#        define CTX_PSTATE (mctx->__ss.__cpsr)
+#        define CTX_X(i) (mctx->__ss.__x[i])
+#        define CTX_Q(i) (mctx->__ns.__v[i])
+#        define CTX_FPSR (mctx->__ns.__fpsr)
+#        define CTX_FPCR (mctx->__ns.__fpcr)
+#    elif defined(__linux__)
+#        define CTX_PC (mctx.pc)
+#        define CTX_SP (mctx.sp)
+#        define CTX_LR (mctx.regs[30])
+#        define CTX_PSTATE (mctx.pstate)
+#        define CTX_X(i) (mctx.regs[i])
+#        define CTX_Q(i) (fpctx->vregs[i])
+#        define CTX_FPSR (fpctx->fpsr)
+#        define CTX_FPCR (fpctx->fpcr)
+#    elif defined(__FreeBSD__)
+#        define CTX_PC (mctx.mc_gpregs.gp_elr)
+#        define CTX_SP (mctx.mc_gpregs.gp_sp)
+#        define CTX_LR (mctx.mc_gpregs.gp_lr)
+#        define CTX_X(i) (mctx.mc_gpregs.gp_x[i])
+#        define CTX_Q(i) (mctx.mc_fpregs.fp_q[i])
+#    elif defined(__NetBSD__)
+#        define CTX_PC (mctx.mc_gpregs.gp_elr)
+#        define CTX_SP (mctx.mc_gpregs.gp_sp)
+#        define CTX_LR (mctx.mc_gpregs.gp_lr)
+#        define CTX_X(i) (mctx.mc_gpregs.gp_x[i])
+#        define CTX_Q(i) (mctx.mc_fpregs.fp_q[i])
+#    elif defined(__OpenBSD__)
+#        define CTX_PC (ucontext->sc_elr)
+#        define CTX_SP (ucontext->sc_sp)
+#        define CTX_LR (ucontext->sc_lr)
+#        define CTX_X(i) (ucontext->sc_x[i])
+#        define CTX_Q(i) (ucontext->sc_q[i])
+#    else
+#        error "Unknown platform"
+#    endif
+#else
+#    error "unimplemented"
+#endif
+
+#ifdef ARCHITECTURE_arm64
+#ifdef __APPLE__
+inline _STRUCT_ARM_NEON_STATE64* GetFloatingPointState(mcontext_t& host_ctx) {
+    return &(host_ctx->__ns);
+}
+#elif defined(__linux__)
+inline fpsimd_context* GetFloatingPointState(mcontext_t& host_ctx) {
+    _aarch64_ctx* header = reinterpret_cast<_aarch64_ctx*>(&host_ctx.__reserved);
+    while (header->magic != FPSIMD_MAGIC)
+        header = reinterpret_cast<_aarch64_ctx*>(reinterpret_cast<char*>(header) + header->size);
+    return reinterpret_cast<fpsimd_context*>(header);
+}
+#endif
+#endif