[LoongArch64] coreclr-vm directory (#62885)

* Part6-2: -add the coreclr-vm directory for LoongArch64. (#59561)

Co-authored-by: Loongson's .NET-teams

* [LoongArch64] revert the syncblk.cpp.

* [LoongArch64] delete some unused codes.

* [LoongArch64] add vm/CMakeLists.txt from #62889.

* [LoongArch64] add related files from #62886 and #62893.

* [LoongArch64] moved vm/jitinterface.cpp from #62893.
moved inc/corinfo.h from #6288.

* [LoongArch64] run the file `src/coreclr/tools/Common/JitInterface/ThunkGenerator/gen.sh`
and merge the patch from #62893.

* [LoongArch64] revert vm/ceeload.h.
amend the `ToolBox/superpmi/superpmi-shared/agnostic.h`

* [LoongArch64] add empty interfaces within `CorInfoImpl.cs`.

* [LoongArch64] Fix the compiling error on Windows.

* [LoongArch64] Fix the compiling error for memory unaligned m_currentByteStackIndex.

* [LoongArch64] Delete the !TARGET_LOONGARCH64 for m_currentByteStackIndex.

* [LoongArch64] move ToolBox from #62886.

* [LoongArch64] amend the args when needs unsigned extending within CallTargetWorker.

* [LoongArch64] add bool type for args' unsigned extention.

* [LoongArch64] adding char type for args' unsigned extention.
Also rename `TARGET_LOONGARCH64` to `UNIX_LOONGARCH64_ABI` within ABI.

* [LoongArch64] amend renaming `TARGET_LOONGARCH64` to `UNIX_LOONGARCH64_ABI` within ABI.

* [LoongArch64] remove the JIT/EE interface to #62893.

* [LoongArch64] revert the rename `TARGET_LOONGARCH64` to `UNIX_LOONGARCH64_ABI`.
Also add unsigned extend for CHAR type.

* [LoongArch64] refactor the `ArgDestination and ArgLocDesc`.

* [LoongArch64] rename the `m_flag` and `getFieldTypeByHnd`.

* [LoongArch64] add `NATIVE_SYMBOL_READER_DLL` for compiling error.

* [LoongArch64] update the version of the `LICENSE description`.

* [LoongArch64] keep same with the comment in `jit/targetloongarch64.h`

* [LoongArch64] amend the code for reviewing.

* [LoongArch64] refactor LoongArch64-ABI within `vm`,
and also amend some code for review.

* [LoongArch64] delete unused codes.

* [LoongArch64] merge main for #65869.

* [LoongArch64] amend the format for reviewing.

* [LoongArch64] delete some unused code for reviewing.

* [LoongArch64] amend code for CR feedback @jkotas @janvorli

* [LoongArch64] add class type for LoongArch64-ABI.

* [LoongArch64] Amend the LoongArch64's ABI
after merged `MethodTable::GetLoongArch64PassStructInRegisterFlags()`
and `CEEInfo::getLoongArch64PassStructInRegisterFlags()`

* [LoongArch64] Fix the assert error
when running hello-world within debug-mode after refacting.

Co-authored-by: qiaopengcheng <qiaopengcheng-hf@loongson.cn>

Author: shushanhf

src/coreclr/inc/clrnt.h

@@ -1069,14 +1069,6 @@ RtlVirtualUnwind(
     IN OUT PKNONVOLATILE_CONTEXT_POINTERS ContextPointers OPTIONAL
     );
 
-#ifndef IMAGE_REL_LOONGARCH64_PC
-#define IMAGE_REL_LOONGARCH64_PC  0x0003
-#endif
-
-#ifndef IMAGE_REL_LOONGARCH64_JIR
-#define IMAGE_REL_LOONGARCH64_JIR  0x0004
-#endif
-
 #endif // TARGET_LOONGARCH64
 
 #endif  // CLRNT_H_

src/coreclr/inc/eetwain.h

@@ -211,9 +211,9 @@ virtual bool UnwindStackFrame(PREGDISPLAY     pContext,
 virtual bool IsGcSafe(EECodeInfo     *pCodeInfo,
                       DWORD           dwRelOffset) = 0;
 
-#if defined(TARGET_ARM) || defined(TARGET_ARM64)
+#if defined(TARGET_ARM) || defined(TARGET_ARM64) || defined(TARGET_LOONGARCH64)
 virtual bool HasTailCalls(EECodeInfo *pCodeInfo) = 0;
-#endif // TARGET_ARM || TARGET_ARM64
+#endif // TARGET_ARM || TARGET_ARM64 || TARGET_LOONGARCH64
 
 #if defined(TARGET_AMD64) && defined(_DEBUG)
 /*
@@ -455,10 +455,10 @@ virtual
 bool IsGcSafe(  EECodeInfo     *pCodeInfo,
                 DWORD           dwRelOffset);
 
-#if defined(TARGET_ARM) || defined(TARGET_ARM64)
+#if defined(TARGET_ARM) || defined(TARGET_ARM64) || defined(TARGET_LOONGARCH64)
 virtual
 bool HasTailCalls(EECodeInfo *pCodeInfo);
-#endif // TARGET_ARM || TARGET_ARM64
+#endif // TARGET_ARM || TARGET_ARM64 || TARGET_LOONGARCH64
 
 #if defined(TARGET_AMD64) && defined(_DEBUG)
 /*

src/coreclr/inc/jithelpers.h

@@ -320,7 +320,7 @@
 
     JITHELPER(CORINFO_HELP_GVMLOOKUP_FOR_SLOT, NULL, CORINFO_HELP_SIG_NO_ALIGN_STUB)
 
-#ifndef TARGET_ARM64
+#if !defined(TARGET_ARM64) && !defined(TARGET_LOONGARCH64)
     JITHELPER(CORINFO_HELP_STACK_PROBE, JIT_StackProbe, CORINFO_HELP_SIG_REG_ONLY)
 #else
     JITHELPER(CORINFO_HELP_STACK_PROBE, NULL, CORINFO_HELP_SIG_UNDEF)

src/coreclr/inc/stdmacros.h

@@ -111,6 +111,20 @@
 #define NOT_ARM64_ARG(x)    , x
 #endif
 
+#ifdef TARGET_LOONGARCH64
+#define LOONGARCH64_FIRST_ARG(x)  x ,
+#define LOONGARCH64_ARG(x)        , x
+#define LOONGARCH64_ONLY(x)       x
+#define NOT_LOONGARCH64(x)
+#define NOT_LOONGARCH64_ARG(x)
+#else
+#define LOONGARCH64_FIRST_ARG(x)
+#define LOONGARCH64_ARG(x)
+#define LOONGARCH64_ONLY(x)
+#define NOT_LOONGARCH64(x)        x
+#define NOT_LOONGARCH64_ARG(x)    , x
+#endif
+
 #ifdef TARGET_64BIT
 #define LOG2_PTRSIZE 3
 #else

src/coreclr/tools/superpmi/superpmi-shared/compileresult.cpp

@@ -862,6 +862,11 @@ void CompileResult::applyRelocs(RelocContext* rc, unsigned char* block1, ULONG b
             }
         }
 
+        if (targetArch == SPMI_TARGET_ARCHITECTURE_LOONGARCH64)
+        {
+            Assert(!"FIXME: Not Implements on loongarch64");
+        }
+
         if (IsSpmiTarget64Bit())
         {
             if (relocType == IMAGE_REL_BASED_DIR64)

src/coreclr/tools/superpmi/superpmi-shared/spmiutil.cpp

@@ -251,6 +251,8 @@ static SPMI_TARGET_ARCHITECTURE SpmiTargetArchitecture = SPMI_TARGET_ARCHITECTUR
 static SPMI_TARGET_ARCHITECTURE SpmiTargetArchitecture = SPMI_TARGET_ARCHITECTURE_ARM;
 #elif defined(TARGET_ARM64)
 static SPMI_TARGET_ARCHITECTURE SpmiTargetArchitecture = SPMI_TARGET_ARCHITECTURE_ARM64;
+#elif defined(TARGET_LOONGARCH64)
+static SPMI_TARGET_ARCHITECTURE SpmiTargetArchitecture = SPMI_TARGET_ARCHITECTURE_LOONGARCH64;
 #else
 #error Unsupported architecture
 #endif

src/coreclr/tools/superpmi/superpmi-shared/spmiutil.h

@@ -53,15 +53,16 @@ enum SPMI_TARGET_ARCHITECTURE
     SPMI_TARGET_ARCHITECTURE_X86,
     SPMI_TARGET_ARCHITECTURE_AMD64,
     SPMI_TARGET_ARCHITECTURE_ARM64,
-    SPMI_TARGET_ARCHITECTURE_ARM
+    SPMI_TARGET_ARCHITECTURE_ARM,
+    SPMI_TARGET_ARCHITECTURE_LOONGARCH64
 };
 
 SPMI_TARGET_ARCHITECTURE GetSpmiTargetArchitecture();
 void SetSpmiTargetArchitecture(SPMI_TARGET_ARCHITECTURE spmiTargetArchitecture);
 
 inline bool IsSpmiTarget64Bit()
 {
-    return (GetSpmiTargetArchitecture() == SPMI_TARGET_ARCHITECTURE_AMD64) || (GetSpmiTargetArchitecture() == SPMI_TARGET_ARCHITECTURE_ARM64);
+    return (GetSpmiTargetArchitecture() == SPMI_TARGET_ARCHITECTURE_AMD64) || (GetSpmiTargetArchitecture() == SPMI_TARGET_ARCHITECTURE_ARM64) || (GetSpmiTargetArchitecture() == SPMI_TARGET_ARCHITECTURE_LOONGARCH64);
 }
 
 inline size_t SpmiTargetPointerSize()

src/coreclr/tools/superpmi/superpmi/superpmi.cpp

@@ -53,6 +53,10 @@ void SetSuperPmiTargetArchitecture(const char* targetArchitecture)
         {
             SetSpmiTargetArchitecture(SPMI_TARGET_ARCHITECTURE_ARM64);
         }
+        else if (0 == _stricmp(targetArchitecture, "loongarch64"))
+        {
+            SetSpmiTargetArchitecture(SPMI_TARGET_ARCHITECTURE_LOONGARCH64);
+        }
         else
         {
             LogError("Illegal target architecture '%s'", targetArchitecture);

src/coreclr/vm/CMakeLists.txt

@@ -762,6 +762,14 @@ else(CLR_CMAKE_TARGET_WIN32)
             ${ARCH_SOURCES_DIR}/pinvokestubs.S
             ${ARCH_SOURCES_DIR}/thunktemplates.S
         )
+    elseif(CLR_CMAKE_TARGET_ARCH_LOONGARCH64)
+        set(VM_SOURCES_WKS_ARCH_ASM
+            ${ARCH_SOURCES_DIR}/asmhelpers.S
+            ${ARCH_SOURCES_DIR}/calldescrworkerloongarch64.S
+            ${ARCH_SOURCES_DIR}/crthelpers.S
+            ${ARCH_SOURCES_DIR}/pinvokestubs.S
+            ${ARCH_SOURCES_DIR}/thunktemplates.S
+        )
     endif()
 
 endif(CLR_CMAKE_TARGET_WIN32)
@@ -864,6 +872,21 @@ elseif(CLR_CMAKE_TARGET_ARCH_ARM64)
             ${ARCH_SOURCES_DIR}/arm64singlestepper.cpp
         )
     endif(CLR_CMAKE_HOST_UNIX)
+elseif(CLR_CMAKE_TARGET_ARCH_LOONGARCH64)
+    set(VM_SOURCES_DAC_AND_WKS_ARCH
+        ${ARCH_SOURCES_DIR}/stubs.cpp
+        exceptionhandling.cpp
+    )
+
+    set(VM_HEADERS_DAC_AND_WKS_ARCH
+        ${ARCH_SOURCES_DIR}/virtualcallstubcpu.hpp
+        exceptionhandling.h
+    )
+
+    set(VM_SOURCES_WKS_ARCH
+        ${ARCH_SOURCES_DIR}/profiler.cpp
+        gcinfodecoder.cpp
+    )
 endif()
 
 if(CLR_CMAKE_HOST_UNIX)

src/coreclr/vm/argdestination.h

@@ -29,8 +29,8 @@ class ArgDestination
         LIMITED_METHOD_CONTRACT;
 #if defined(UNIX_AMD64_ABI)
         _ASSERTE((argLocDescForStructInRegs != NULL) || (offset != TransitionBlock::StructInRegsOffset));
-#elif defined(TARGET_ARM64)
-        // This assert is not interesting on arm64. argLocDescForStructInRegs could be
+#elif defined(TARGET_ARM64) || defined(TARGET_LOONGARCH64)
+        // This assert is not interesting on arm64/loongarch64. argLocDescForStructInRegs could be
         // initialized if the args are being enregistered.
 #else
         _ASSERTE(argLocDescForStructInRegs == NULL);
@@ -83,6 +83,67 @@ class ArgDestination
 #endif // !DACCESS_COMPILE
 #endif // defined(TARGET_ARM64)
 
+#if defined(TARGET_LOONGARCH64)
+    bool IsStructPassedInRegs()
+    {
+        return m_argLocDescForStructInRegs != NULL;
+    }
+
+#ifndef DACCESS_COMPILE
+    void CopyStructToRegisters(void *src, int fieldBytes)
+    {
+        _ASSERTE(IsStructPassedInRegs());
+        _ASSERTE(fieldBytes <= 16);
+
+        int argOfs = TransitionBlock::GetOffsetOfFloatArgumentRegisters() + m_argLocDescForStructInRegs->m_idxFloatReg * 8;
+
+        if (m_argLocDescForStructInRegs->m_structFields == STRUCT_FLOAT_FIELD_ONLY_TWO)
+        { // struct with two floats.
+            _ASSERTE(m_argLocDescForStructInRegs->m_cFloatReg == 2);
+            _ASSERTE(m_argLocDescForStructInRegs->m_cGenReg == 0);
+            *(INT64*)((char*)m_base + argOfs) = *(INT32*)src;
+            *(INT64*)((char*)m_base + argOfs + 8) = *((INT32*)src + 1);
+        }
+        else if ((m_argLocDescForStructInRegs->m_structFields & STRUCT_FLOAT_FIELD_FIRST) != 0)
+        { // the first field is float or double.
+            if ((m_argLocDescForStructInRegs->m_structFields & STRUCT_FIRST_FIELD_SIZE_IS8) == 0)
+                *(INT64*)((char*)m_base + argOfs) = *(INT32*)src; // the first field is float
+            else
+                *(UINT64*)((char*)m_base + argOfs) = *(UINT64*)src; // the first field is double.
+            _ASSERTE(m_argLocDescForStructInRegs->m_cFloatReg == 1);
+            _ASSERTE(m_argLocDescForStructInRegs->m_cGenReg == 1);
+            _ASSERTE((m_argLocDescForStructInRegs->m_structFields & STRUCT_FLOAT_FIELD_SECOND) == 0);//the second field is integer.
+            argOfs = TransitionBlock::GetOffsetOfArgumentRegisters() + m_argLocDescForStructInRegs->m_idxGenReg * 8;
+            if ((m_argLocDescForStructInRegs->m_structFields & STRUCT_HAS_8BYTES_FIELDS_MASK) != 0)
+                *(UINT64*)((char*)m_base + argOfs) = *((UINT64*)src + 1);
+            else
+                *(INT64*)((char*)m_base + argOfs) = *((INT32*)src + 1); // the second field is int32.
+        }
+        else if ((m_argLocDescForStructInRegs->m_structFields & STRUCT_FLOAT_FIELD_SECOND) != 0)
+        { // the second field is float or double.
+            *(UINT64*)((char*)m_base + argOfs) = *(UINT64*)src; // NOTE: here ignoring the first size.
+            if ((m_argLocDescForStructInRegs->m_structFields & STRUCT_HAS_8BYTES_FIELDS_MASK) == 0)
+                *(UINT64*)((char*)m_base + argOfs) = *((INT32*)src + 1); // the second field is int32.
+            else
+                *(UINT64*)((char*)m_base + argOfs) = *((UINT64*)src + 1);
+            _ASSERTE(m_argLocDescForStructInRegs->m_cFloatReg == 1);
+            _ASSERTE(m_argLocDescForStructInRegs->m_cGenReg == 1);
+            _ASSERTE((m_argLocDescForStructInRegs->m_structFields & STRUCT_FLOAT_FIELD_FIRST) == 0);//the first field is integer.
+            argOfs = TransitionBlock::GetOffsetOfArgumentRegisters() + m_argLocDescForStructInRegs->m_idxGenReg * 8;
+        }
+        else
+            _ASSERTE(!"---------UNReachable-------LoongArch64!!!");
+    }
+#endif // !DACCESS_COMPILE
+
+    PTR_VOID GetStructGenRegDestinationAddress()
+    {
+        _ASSERTE(IsStructPassedInRegs());
+        int argOfs = TransitionBlock::GetOffsetOfArgumentRegisters() + m_argLocDescForStructInRegs->m_idxGenReg * 8;
+        return dac_cast<PTR_VOID>(dac_cast<TADDR>(m_base) + argOfs);
+    }
+#endif // defined(TARGET_LOONGARCH64)
+
 #if defined(UNIX_AMD64_ABI)
 
     // Returns true if the ArgDestination represents a struct passed in registers.