Stub Precode variant for DynamicHelpers

src/coreclr/clrdefinitions.cmake

@@ -213,6 +213,9 @@ if (CLR_CMAKE_TARGET_WIN32 AND (CLR_CMAKE_TARGET_ARCH_AMD64 OR CLR_CMAKE_TARGET_
   add_definitions(-DFEATURE_SPECIAL_USER_MODE_APC)
 endif()
 
+if (FEATURE_STUBPRECODE_DYNAMIC_HELPERS)
+  add_definitions(-DFEATURE_STUBPRECODE_DYNAMIC_HELPERS)
+endif()
 
 # Use this function to enable building with a specific target OS and architecture set of defines
 # This is known to work for the set of defines used by the JIT and gcinfo, it is not likely correct for

src/coreclr/clrfeatures.cmake

@@ -70,3 +70,7 @@ if (CLR_CMAKE_HOST_UNIX AND CLR_CMAKE_HOST_ARCH_AMD64)
   # Allow 16 byte compare-exchange (cmpxchg16b)
   add_compile_options($<${FEATURE_CORECLR_CACHED_INTERFACE_DISPATCH}:-mcx16>)
 endif()
+
+if (CLR_CMAKE_TARGET_ARCH_AMD64 OR CLR_CMAKE_TARGET_ARCH_ARM64)
+  set(FEATURE_STUBPRECODE_DYNAMIC_HELPERS 1)
+endif()

src/coreclr/vm/CMakeLists.txt

@@ -639,6 +639,7 @@ if(CLR_CMAKE_TARGET_ARCH_AMD64)
         ${ARCH_SOURCES_DIR}/ExternalMethodFixupThunk.asm
         ${ARCH_SOURCES_DIR}/UMThunkStub.asm
         ${ARCH_SOURCES_DIR}/VirtualCallStubAMD64.asm
+        ${ARCH_SOURCES_DIR}/StubPrecodeDynamicHelpers.asm
     )
 
     set(VM_HEADERS_WKS_ARCH_ASM
@@ -666,7 +667,8 @@ elseif(CLR_CMAKE_TARGET_ARCH_ARM64)
         ${RUNTIME_DIR}/${ARCH_SOURCES_DIR}/StubDispatch.asm
         ${ARCH_SOURCES_DIR}/thunktemplates.asm
         ${ARCH_SOURCES_DIR}/CachedInterfaceDispatchCoreCLR.asm
-    )
+        ${ARCH_SOURCES_DIR}/StubPrecodeDynamicHelpers.asm
+        )
 
     set(VM_HEADERS_WKS_ARCH_ASM
         ${ARCH_SOURCES_DIR}/asmconstants.h
@@ -697,6 +699,7 @@ else(CLR_CMAKE_TARGET_WIN32)
             ${ARCH_SOURCES_DIR}/unixasmhelpers.S
             ${ARCH_SOURCES_DIR}/umthunkstub.S
             ${ARCH_SOURCES_DIR}/virtualcallstubamd64.S
+            ${ARCH_SOURCES_DIR}/StubPrecodeDynamicHelpers.S
         )
     elseif(CLR_CMAKE_TARGET_ARCH_I386)
         set(VM_SOURCES_WKS_ARCH_ASM
@@ -725,6 +728,7 @@ else(CLR_CMAKE_TARGET_WIN32)
             ${ARCH_SOURCES_DIR}/pinvokestubs.S
             ${RUNTIME_DIR}/${ARCH_SOURCES_DIR}/StubDispatch.S
             ${ARCH_SOURCES_DIR}/thunktemplates.S
+            ${ARCH_SOURCES_DIR}/StubPrecodeDynamicHelpers.S
         )
     elseif(CLR_CMAKE_TARGET_ARCH_LOONGARCH64)
         set(VM_SOURCES_WKS_ARCH_ASM

src/coreclr/vm/amd64/StubPrecodeDynamicHelpers.S

@@ -0,0 +1,264 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+.intel_syntax noprefix
+#include "unixasmmacros.inc"
+#include "asmconstants.h"
+
+#ifdef FEATURE_STUBPRECODE_DYNAMIC_HELPERS 
+
+#define SecretArg_Reg r10
+#define FirstArg_Reg rdi
+#define SecondArg_Reg rsi
+#define SecondArg_DwordReg esi
+#define ThirdArg_Reg rdx
+#define ThirdArg_DwordReg edx
+#define FourthArg_Reg rcx
+
+#define DATA_SLOT(field) r10 + OFFSETOF__DynamicHelperStubArgs__ ## field
+#define GENERIC_DICT_DATA_SLOT(field) r10 + OFFSETOF__GenericDictionaryDynamicHelperStubData__ ## field
+
+LEAF_ENTRY DynamicHelper_CallHelper_1Arg, _TEXT
+        mov    FirstArg_Reg, QWORD PTR [DATA_SLOT(Constant1)]
+        jmp    QWORD PTR [DATA_SLOT(Helper)]
+LEAF_END DynamicHelper_CallHelper_1Arg, _TEXT
+
+LEAF_ENTRY DynamicHelper_CallHelper_AddSecondArg, _TEXT
+        mov    SecondArg_Reg, QWORD PTR [DATA_SLOT(Constant1)]
+        jmp    QWORD PTR [DATA_SLOT(Helper)]
+LEAF_END DynamicHelper_CallHelper_AddSecondArg, _TEXT
+
+LEAF_ENTRY DynamicHelper_CallHelper_2Arg, _TEXT
+        mov    FirstArg_Reg, QWORD PTR [DATA_SLOT(Constant1)]
+        mov    SecondArg_Reg, QWORD PTR [DATA_SLOT(Constant2)]
+        jmp    QWORD PTR [DATA_SLOT(Helper)]
+LEAF_END DynamicHelper_CallHelper_2Arg, _TEXT
+
+LEAF_ENTRY DynamicHelper_CallHelper_ArgMove, _TEXT
+        mov    SecondArg_Reg, FirstArg_Reg
+        mov    FirstArg_Reg, QWORD PTR [DATA_SLOT(Constant1)]
+        jmp    QWORD PTR [DATA_SLOT(Helper)]
+LEAF_END DynamicHelper_CallHelper_ArgMove, _TEXT
+
+LEAF_ENTRY DynamicHelper_Return, _TEXT
+        ret
+LEAF_END DynamicHelper_Return, _TEXT
+
+LEAF_ENTRY DynamicHelper_ReturnConst, _TEXT
+        mov    rax, SecretArg_Reg
+        ret
+LEAF_END DynamicHelper_ReturnConst, _TEXT
+
+LEAF_ENTRY DynamicHelper_ReturnIndirConst, _TEXT
+        mov    rax, QWORD PTR [SecretArg_Reg]
+        ret
+LEAF_END DynamicHelper_ReturnIndirConst, _TEXT
+
+LEAF_ENTRY DynamicHelper_ReturnIndirConstWithOffset, _TEXT
+        mov    rax, QWORD PTR [DATA_SLOT(Constant1)]
+        mov    rax, QWORD PTR [rax]
+        add    rax, QWORD PTR [DATA_SLOT(Constant2)]
+        ret
+LEAF_END DynamicHelper_ReturnIndirConstWithOffset, _TEXT
+
+LEAF_ENTRY DynamicHelper_CallHelper_AddThirdArg, _TEXT
+        mov    ThirdArg_Reg, QWORD PTR [DATA_SLOT(Constant1)]
+        jmp    QWORD PTR [DATA_SLOT(Helper)]
+LEAF_END DynamicHelper_CallHelper_AddThirdArg, _TEXT
+
+LEAF_ENTRY DynamicHelper_CallHelper_AddThirdAndFourthArg, _TEXT
+        mov    ThirdArg_Reg, QWORD PTR [DATA_SLOT(Constant1)]
+        mov    FourthArg_Reg, QWORD PTR [DATA_SLOT(Constant2)]
+        jmp    QWORD PTR [DATA_SLOT(Helper)]
+LEAF_END DynamicHelper_CallHelper_AddThirdAndFourthArg, _TEXT
+
+// Generic dictionaries can have 2 or 3 indirections  (5 indirs of 32bit size, and 2 8 byte quantities)  = 40 bytes
+// If it has 2 its for a Method, and the first indirection is always offsetof(InstantiatiedMethodDesc, m_pPerInstInfo)
+// If it has 3 its for a Class, and the first indirection is always MethodTable::GetOffsetOfPerInstInfo
+// It can also have 0, 0, to just return the class type
+// Test For Null Or Not (If not present, cannot have a size check)
+// SizeCheck or not (Only needed if size > Some number)
+//
+// Also special case where we just return the TypeHandle or MethodDesc itself
+// Should probably have special case for 1, 2, 3 generic arg of MethodDesc/MethodTable
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class_SizeCheck_TestForNull, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SecondIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // SizeCheck
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SizeOffset)]
+        mov    ThirdArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SlotOffset)]
+        cmp    qword ptr[rax + SecondArg_Reg], ThirdArg_Reg
+        jle    LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Class_SizeCheck_TestForNull_HelperCall)
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(LastIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // Null test
+        test   rax, rax
+        je     LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Class_SizeCheck_TestForNull_HelperCall)
+        ret
+LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Class_SizeCheck_TestForNull_HelperCall):
+        mov    SecondArg_Reg, QWORD PTR [GENERIC_DICT_DATA_SLOT(HandleArgs)]
+        PREPARE_EXTERNAL_VAR g_pClassWithSlotAndModule, rax
+        jmp    [rax]
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class_SizeCheck_TestForNull, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class_TestForNull, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SecondIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(LastIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // Null test
+        test   rax, rax
+        je     LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Class_TestForNull_HelperCall)
+        ret
+LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Class_TestForNull_HelperCall):
+        mov    SecondArg_Reg, QWORD PTR [GENERIC_DICT_DATA_SLOT(HandleArgs)]
+        PREPARE_EXTERNAL_VAR g_pClassWithSlotAndModule, rax
+        jmp    [rax]
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class_TestForNull, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SecondIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(LastIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method_SizeCheck_TestForNull, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // SizeCheck
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SizeOffset)]
+        mov    ThirdArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(SlotOffset)]
+        cmp    qword ptr[rax + SecondArg_Reg], ThirdArg_Reg
+        jle    LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Method_SizeCheck_TestForNull_HelperCall)
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(LastIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // Null test
+        test   rax, rax
+        je     LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Method_SizeCheck_TestForNull_HelperCall)
+        ret
+LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Method_SizeCheck_TestForNull_HelperCall):
+        mov    SecondArg_Reg, QWORD PTR [GENERIC_DICT_DATA_SLOT(HandleArgs)]
+        PREPARE_EXTERNAL_VAR g_pMethodWithSlotAndModule, rax
+        jmp    [rax]
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method_SizeCheck_TestForNull, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method_TestForNull, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(LastIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        // Null test
+        test   rax, rax
+        je     LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Method_TestForNull_HelperCall)
+        ret
+LOCAL_LABEL(DynamicHelper_GenericDictionaryLookup_Method_TestForNull_HelperCall):
+        mov    SecondArg_Reg, QWORD PTR [GENERIC_DICT_DATA_SLOT(HandleArgs)]
+        PREPARE_EXTERNAL_VAR g_pMethodWithSlotAndModule, rax
+        jmp    [rax]
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method_TestForNull, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // Standard Indirection
+        mov    SecondArg_DwordReg, DWORD PTR [GENERIC_DICT_DATA_SLOT(LastIndir)]
+        mov    rax, QWORD PTR [SecondArg_Reg+rax]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class_0_0, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class_0_0, _TEXT
+
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class_0_1, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax + 0x8]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class_0_1, _TEXT
+
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class_0_2, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax + 0x10]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class_0_2, _TEXT
+
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Class_0_3, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__MethodTable__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax + 0x18]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Class_0_3, _TEXT
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method_0, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method_0, _TEXT
+
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method_1, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax + 0x8]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method_1, _TEXT
+
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method_2, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax + 0x10]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method_2, _TEXT
+
+
+LEAF_ENTRY DynamicHelper_GenericDictionaryLookup_Method_3, _TEXT
+        // First indirection
+        mov    rax, QWORD PTR [FirstArg_Reg+OFFSETOF__InstantiatedMethodDesc__m_pPerInstInfo]
+        // Standard Indirection
+        mov    rax, QWORD PTR [rax + 0x18]
+        ret
+LEAF_END DynamicHelper_GenericDictionaryLookup_Method_3, _TEXT
+
+#endif //// FEATURE_STUBPRECODE_DYNAMIC_HELPERS