jit: add compile option

CMakeLists.txt

@@ -14,6 +14,42 @@ if (NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Release)
 endif()
 
+include(CheckSymbolExists)
+function(detect_architecture symbol arch)
+    if (NOT DEFINED ARCHITECTURE)
+        set(CMAKE_REQUIRED_QUIET 1)
+        check_symbol_exists("${symbol}" "" ARCHITECTURE_${arch})
+        unset(CMAKE_REQUIRED_QUIET)
+
+        # The output variable needs to be unique across invocations otherwise
+        # CMake's crazy scope rules will keep it defined
+        if (ARCHITECTURE_${arch})
+            set(ARCHITECTURE "${arch}" PARENT_SCOPE)
+            set(ARCHITECTURE_${arch} 1 PARENT_SCOPE)
+            add_definitions(-DARCHITECTURE_${arch}=1)
+        endif()
+    endif()
+endfunction()
+
+detect_architecture("__x86_64__" x86_64)
+detect_architecture("__i386__" x86)
+detect_architecture("__arm__" ARM)
+detect_architecture("__aarch64__" ARM64)
+
+if (ARCHITECTURE STREQUAL x86_64)
+	option(ENABLE_JIT "Enable x64 JIT recompiler" ON)
+endif()
+
+if (ENABLE_JIT)
+	add_definitions(-DJIT_ENABLED)
+endif()
+
+if (CMAKE_BUILD_TYPE STREQUAL Release)
+	option(ENABLE_LTO "Enable link-time optimization" ON)
+else()
+	option(ENABLE_LTO "Enable link-time optimization" OFF)
+endif()
+
 if (CMAKE_BUILD_TYPE STREQUAL Debug)
 	add_compile_options(-Og)
 endif()

src/ARM.cpp

@@ -81,15 +81,8 @@ ARMv4::ARMv4() : ARM(1)
     //
 }
 
-namespace ARMJIT {extern int instructionPopularityARM[ARMInstrInfo::ak_Count];}
-
 void ARM::Reset()
 {
-    FILE* blabla = fopen("fhhg", "w");
-    for (int i = 0; i < ARMInstrInfo::ak_Count; i++)
-        fprintf(blabla, "%d -> %dx\n", i, ARMJIT::instructionPopularityARM[i]);
-    fclose(blabla);
-
     Cycles = 0;
     Halted = 0;
 
@@ -591,6 +584,7 @@ void ARMv5::Execute()
         Halted = 0;
 }
 
+#ifdef JIT_ENABLED
 void ARMv5::ExecuteJIT()
 {
     if (Halted)
@@ -642,6 +636,7 @@ void ARMv5::ExecuteJIT()
     if (Halted == 2)
         Halted = 0;
 }
+#endif
 
 void ARMv4::Execute()
 {
@@ -720,6 +715,7 @@ void ARMv4::Execute()
         Halted = 0;
 }
 
+#ifdef JIT_ENABLED
 void ARMv4::ExecuteJIT()
 {
     if (Halted)
@@ -771,4 +767,5 @@ void ARMv4::ExecuteJIT()
 
     if (Halted == 2)
         Halted = 0;
-}
+}
+#endif

src/ARM.h

@@ -52,7 +52,9 @@ class ARM
     }
 
     virtual void Execute() = 0;
+#ifdef ENABLE_JIT
     virtual void ExecuteJIT() = 0;
+#endif
 
     bool CheckCondition(u32 code)
     {
@@ -160,7 +162,9 @@ class ARMv5 : public ARM
     void DataAbort();
 
     void Execute();
+#ifdef JIT_ENABLED
     void ExecuteJIT();
+#endif
 
     // all code accesses are forced nonseq 32bit
     u32 CodeRead32(u32 addr, bool branch);
@@ -283,7 +287,9 @@ class ARMv4 : public ARM
     void JumpTo(u32 addr, bool restorecpsr = false);
 
     void Execute();
+#ifdef JIT_ENABLED
     void ExecuteJIT();
+#endif
 
     u16 CodeRead16(u32 addr)
     {

src/ARMJIT_x64/ARMJIT_Compiler.cpp

@@ -4,7 +4,10 @@
 
 #include <assert.h>
 
+#include "../dolphin/CommonFuncs.h"
+
 #ifdef _WIN32
+#include <windows.h>
 #else
 #include <sys/mman.h>
 #include <unistd.h>
@@ -32,8 +35,6 @@ const int RegisterCache<Compiler, X64Reg>::NativeRegsAvailable =
 #endif
 ;
 
-int instructionPopularityARM[ARMInstrInfo::ak_Count];
-
 /*
     We'll repurpose this .bss memory
 
@@ -42,29 +43,33 @@ u8 CodeMemory[1024 * 1024 * 32];
 
 Compiler::Compiler()
 {
-#ifdef _WIN32
-#else
-    u64 pagesize = sysconf(_SC_PAGE_SIZE);
-#endif
-
-    u8* pageAligned = (u8*)(((u64)CodeMemory & ~(pagesize - 1)) + pagesize);
-    u64 alignedSize = (((u64)CodeMemory + sizeof(CodeMemory)) & ~(pagesize - 1)) - (u64)pageAligned;
-
-#ifdef _WIN32
-#else
-    mprotect(pageAligned, alignedSize, PROT_EXEC | PROT_READ | PROT_WRITE);
-#endif
-
-    region = pageAligned;
-    region_size = alignedSize;
-    total_region_size = region_size;
+    {
+    #ifdef _WIN32
+        SYSTEM_INFO sysInfo;
+        GetSystemInfo(&sysInfo);
+
+        u64 pageSize = (u64)sysInfo.dwPageSize;
+    #else
+        u64 pageSize = sysconf(_SC_PAGE_SIZE);
+    #endif
+
+        u8* pageAligned = (u8*)(((u64)CodeMemory & ~(pageSize - 1)) + pageSize);
+        u64 alignedSize = (((u64)CodeMemory + sizeof(CodeMemory)) & ~(pageSize - 1)) - (u64)pageAligned;
+
+    #ifdef _WIN32
+        DWORD dummy;
+        VirtualProtect(pageAligned, alignedSize, PAGE_EXECUTE_READWRITE, &dummy);
+    #else
+        mprotect(pageAligned, alignedSize, PROT_EXEC | PROT_READ | PROT_WRITE);
+    #endif
+
+        region = pageAligned;
+        region_size = alignedSize;
+        total_region_size = region_size;
+    }
 
     ClearCodeSpace();
 
-    SetCodePtr(pageAligned);
-
-    memset(instructionPopularityARM, 0, sizeof(instructionPopularityARM));
-
     for (int i = 0; i < 3; i++)
     {
         for (int j = 0; j < 2; j++)
@@ -118,7 +123,7 @@ Compiler::Compiler()
         SetJumpTarget(und);
         MOV(32, R(ABI_PARAM3), MComplex(RCPU, ABI_PARAM2, SCALE_4, offsetof(ARM, R_UND)));
         RET();
-        }
+    }
     {
         // RSCRATCH  mode
         // ABI_PARAM2 reg n
@@ -163,7 +168,10 @@ Compiler::Compiler()
         RET();
     }
 
-    ResetStart = (void*)GetWritableCodePtr();
+    // move the region forward to prevent overwriting the generated functions
+    region_size -= GetWritableCodePtr() - region;
+    total_region_size = region_size;
+    region = GetWritableCodePtr();
 }
 
 void Compiler::LoadCPSR()
@@ -338,7 +346,7 @@ const Compiler::CompileFunc T_Comp[ARMInstrInfo::tk_Count] = {
 
 void Compiler::Reset()
 {
-    SetCodePtr((u8*)ResetStart);
+    ClearCodeSpace();
 }
 
 CompiledBlock Compiler::CompileBlock(ARM* cpu, FetchedInstr instrs[], int instrsCount)
@@ -375,9 +383,6 @@ CompiledBlock Compiler::CompileBlock(ARM* cpu, FetchedInstr instrs[], int instrs
             ? T_Comp[CurInstr.Info.Kind]
             : A_Comp[CurInstr.Info.Kind];
 
-        if (!Thumb)
-            instructionPopularityARM[CurInstr.Info.Kind] += comp == NULL;
-
         if (comp == NULL || i == instrsCount - 1)
         {
             MOV(32, MDisp(RCPU, offsetof(ARM, R[15])), Imm32(R15));

src/ARMJIT_x64/ARMJIT_Compiler.h

@@ -132,7 +132,6 @@ class Compiler : public Gen::X64CodeBlock
         return Gen::R(RegCache.Mapping[reg]);
     }
 
-    void* ResetStart;
     void* MemoryFuncs9[3][2];
     void* MemoryFuncs7[3][2][2];
 

src/CMakeLists.txt

@@ -49,19 +49,22 @@ add_library(core STATIC
 	WifiAP.cpp
 
 	tiny-AES-c/aes.c
+)
 
-	ARMJIT.cpp
-	ARMJIT_x64/ARMJIT_Compiler.cpp
-	ARMJIT_x64/ARMJIT_ALU.cpp
-	ARMJIT_x64/ARMJIT_LoadStore.cpp
-	ARMJIT_x64/ARMJIT_Branch.cpp
+if (ENABLE_JIT)
+	target_sources(core PRIVATE
+		ARMJIT.cpp
+		ARMJIT_x64/ARMJIT_Compiler.cpp
+		ARMJIT_x64/ARMJIT_ALU.cpp
+		ARMJIT_x64/ARMJIT_LoadStore.cpp
+		ARMJIT_x64/ARMJIT_Branch.cpp
 
-	dolphin/CommonFuncs.cpp
-	dolphin/x64ABI.cpp
-	dolphin/x64CPUDetect.cpp
-	dolphin/x64Emitter.cpp
-	dolphin/MemoryUtil.cpp
-)
+		dolphin/CommonFuncs.cpp
+		dolphin/x64ABI.cpp
+		dolphin/x64CPUDetect.cpp
+		dolphin/x64Emitter.cpp
+	)
+endif()
 
 if (WIN32)
 	target_link_libraries(core ole32 comctl32 ws2_32 opengl32)

src/CP15.cpp

@@ -813,7 +813,9 @@ void ARMv5::DataWrite8(u32 addr, u8 val)
     {
         DataCycles = 1;
         *(u8*)&ITCM[addr & 0x7FFF] = val;
+#ifdef JIT_ENABLED
         ARMJIT::cache.ARM9_ITCM[(addr & 0x7FFF) >> 1] = NULL;
+#endif
         return;
     }
     if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
@@ -835,7 +837,9 @@ void ARMv5::DataWrite16(u32 addr, u16 val)
     {
         DataCycles = 1;
         *(u16*)&ITCM[addr & 0x7FFF] = val;
+#ifdef JIT_ENABLED
         ARMJIT::cache.ARM9_ITCM[(addr & 0x7FFF) >> 1] = NULL;
+#endif
         return;
     }
     if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
@@ -857,8 +861,10 @@ void ARMv5::DataWrite32(u32 addr, u32 val)
     {
         DataCycles = 1;
         *(u32*)&ITCM[addr & 0x7FFF] = val;
+#ifdef JIT_ENABLED
         ARMJIT::cache.ARM9_ITCM[(addr & 0x7FFF) >> 1] = NULL;
         ARMJIT::cache.ARM9_ITCM[((addr + 2) & 0x7FFF) >> 1] = NULL;
+#endif
         return;
     }
     if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
@@ -880,8 +886,10 @@ void ARMv5::DataWrite32S(u32 addr, u32 val)
     {
         DataCycles += 1;
         *(u32*)&ITCM[addr & 0x7FFF] = val;
-        ARMJIT::cache.ARM9_ITCM[(addr & 0x7FFF) / 2] = NULL;
-        ARMJIT::cache.ARM9_ITCM[(addr & 0x7FFF) / 2 + 1] = NULL;
+#ifdef JIT_ENABLED
+        ARMJIT::cache.ARM9_ITCM[(addr & 0x7FFF) >> 1] = NULL;
+        ARMJIT::cache.ARM9_ITCM[((addr & 0x7FFF) >> 1) + 1] = NULL;
+#endif
         return;
     }
     if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))

src/Config.cpp

@@ -37,8 +37,10 @@ char DSiBIOS7Path[1024];
 char DSiFirmwarePath[1024];
 char DSiNANDPath[1024];
 
+#ifdef JIT_ENABLED
 bool JIT_Enable = false;
 int JIT_MaxBlockSize = 12;
+#endif
 
 ConfigEntry ConfigFile[] =
 {
@@ -51,8 +53,10 @@ ConfigEntry ConfigFile[] =
     {"DSiFirmwarePath", 1, DSiFirmwarePath, 0, "", 1023},
     {"DSiNANDPath", 1, DSiNANDPath, 0, "", 1023},
 
+#ifdef JIT_ENABLED
     {"JIT_Enable", 0, &JIT_Enable, 0, NULL, 0},
     {"JIT_MaxBlockSize", 0, &JIT_MaxBlockSize, 10, NULL, 0},
+#endif
 
     {"", -1, NULL, 0, NULL, 0}
 };

src/Config.h

@@ -51,8 +51,10 @@ extern char DSiBIOS7Path[1024];
 extern char DSiFirmwarePath[1024];
 extern char DSiNANDPath[1024];
 
+#ifdef JIT_ENABLED
 extern bool JIT_Enable;
 extern int JIT_MaxBlockSize;
+#endif
 
 }