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ee_il_dll.cpp
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ee_il_dll.cpp
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XX XX
XX ee_jit.cpp XX
XX XX
XX The functionality needed for the JIT DLL. Includes the DLL entry point XX
XX XX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
*/
#include "jitpch.h"
#ifdef _MSC_VER
#pragma hdrstop
#endif
#include "emit.h"
#include "corexcep.h"
#if !defined(PLATFORM_UNIX)
#include <io.h> // For _dup, _setmode
#include <fcntl.h> // For _O_TEXT
#include <errno.h> // For EINVAL
#endif
/*****************************************************************************/
FILE* jitstdout = nullptr;
ICorJitHost* g_jitHost = nullptr;
static CILJit* ILJitter = nullptr; // The one and only JITTER I return
bool g_jitInitialized = false;
#ifndef FEATURE_MERGE_JIT_AND_ENGINE
HINSTANCE g_hInst = nullptr;
#endif // FEATURE_MERGE_JIT_AND_ENGINE
/*****************************************************************************/
#ifdef DEBUG
JitOptions jitOpts = {
nullptr, // methodName
nullptr, // className
0.1, // CGknob
0, // testMask
(JitOptions*)nullptr // lastDummyField.
};
#endif // DEBUG
/*****************************************************************************/
extern "C" void __stdcall jitStartup(ICorJitHost* jitHost)
{
if (g_jitInitialized)
{
return;
}
g_jitHost = jitHost;
assert(!JitConfig.isInitialized());
JitConfig.initialize(jitHost);
#if defined(PLATFORM_UNIX)
jitstdout = procstdout();
#else
if (jitstdout == nullptr)
{
int stdoutFd = _fileno(procstdout());
// Check fileno error output(s) -1 may overlap with errno result
// but is included for completness.
// We want to detect the case where the initial handle is null
// or bogus and avoid making further calls.
if ((stdoutFd != -1) && (stdoutFd != -2) && (errno != EINVAL))
{
int jitstdoutFd = _dup(_fileno(procstdout()));
// Check the error status returned by dup.
if (jitstdoutFd != -1)
{
_setmode(jitstdoutFd, _O_TEXT);
jitstdout = _fdopen(jitstdoutFd, "w");
assert(jitstdout != nullptr);
// Prevent the FILE* from buffering its output in order to avoid calls to
// `fflush()` throughout the code.
setvbuf(jitstdout, nullptr, _IONBF, 0);
}
}
}
// If jitstdout is still null, fallback to whatever procstdout() was
// initially set to.
if (jitstdout == nullptr)
{
jitstdout = procstdout();
}
#endif // PLATFORM_UNIX
#ifdef FEATURE_TRACELOGGING
JitTelemetry::NotifyDllProcessAttach();
#endif
Compiler::compStartup();
g_jitInitialized = true;
}
void jitShutdown()
{
if (!g_jitInitialized)
{
return;
}
Compiler::compShutdown();
if (jitstdout != procstdout())
{
fclose(jitstdout);
}
#ifdef FEATURE_TRACELOGGING
JitTelemetry::NotifyDllProcessDetach();
#endif
}
#ifndef FEATURE_MERGE_JIT_AND_ENGINE
extern "C" BOOL WINAPI DllMain(HANDLE hInstance, DWORD dwReason, LPVOID pvReserved)
{
if (dwReason == DLL_PROCESS_ATTACH)
{
g_hInst = (HINSTANCE)hInstance;
DisableThreadLibraryCalls((HINSTANCE)hInstance);
#if defined(SELF_NO_HOST) && COR_JIT_EE_VERSION <= 460
jitStartup(JitHost::getJitHost());
#endif
}
else if (dwReason == DLL_PROCESS_DETACH)
{
jitShutdown();
}
return TRUE;
}
HINSTANCE GetModuleInst()
{
return (g_hInst);
}
extern "C" void __stdcall sxsJitStartup(CoreClrCallbacks const& cccallbacks)
{
#ifndef SELF_NO_HOST
InitUtilcode(cccallbacks);
#endif
#if COR_JIT_EE_VERSION <= 460
jitStartup(JitHost::getJitHost());
#endif
}
#endif // !FEATURE_MERGE_JIT_AND_ENGINE
/*****************************************************************************/
struct CILJitSingletonAllocator
{
int x;
};
const CILJitSingletonAllocator CILJitSingleton = {0};
void* __cdecl operator new(size_t, const CILJitSingletonAllocator&)
{
static char CILJitBuff[sizeof(CILJit)];
return CILJitBuff;
}
ICorJitCompiler* g_realJitCompiler = nullptr;
ICorJitCompiler* __stdcall getJit()
{
if (ILJitter == nullptr)
{
ILJitter = new (CILJitSingleton) CILJit();
}
return (ILJitter);
}
/*****************************************************************************/
// Information kept in thread-local storage. This is used in the noway_assert exceptional path.
// If you are using it more broadly in retail code, you would need to understand the
// performance implications of accessing TLS.
//
// If the JIT is being statically linked, these methods must be implemented by the consumer.
#if !defined(FEATURE_MERGE_JIT_AND_ENGINE) || !defined(FEATURE_IMPLICIT_TLS)
__declspec(thread) void* gJitTls = nullptr;
static void* GetJitTls()
{
return gJitTls;
}
void SetJitTls(void* value)
{
gJitTls = value;
}
#else // !defined(FEATURE_MERGE_JIT_AND_ENGINE) || !defined(FEATURE_IMPLICIT_TLS)
extern "C" {
void* GetJitTls();
void SetJitTls(void* value);
}
#endif // // defined(FEATURE_MERGE_JIT_AND_ENGINE) && defined(FEATURE_IMPLICIT_TLS)
#if defined(DEBUG)
JitTls::JitTls(ICorJitInfo* jitInfo) : m_compiler(nullptr), m_logEnv(jitInfo)
{
m_next = reinterpret_cast<JitTls*>(GetJitTls());
SetJitTls(this);
}
JitTls::~JitTls()
{
SetJitTls(m_next);
}
LogEnv* JitTls::GetLogEnv()
{
return &reinterpret_cast<JitTls*>(GetJitTls())->m_logEnv;
}
Compiler* JitTls::GetCompiler()
{
return reinterpret_cast<JitTls*>(GetJitTls())->m_compiler;
}
void JitTls::SetCompiler(Compiler* compiler)
{
reinterpret_cast<JitTls*>(GetJitTls())->m_compiler = compiler;
}
#else // defined(DEBUG)
JitTls::JitTls(ICorJitInfo* jitInfo)
{
}
JitTls::~JitTls()
{
}
Compiler* JitTls::GetCompiler()
{
return reinterpret_cast<Compiler*>(GetJitTls());
}
void JitTls::SetCompiler(Compiler* compiler)
{
SetJitTls(compiler);
}
#endif // !defined(DEBUG)
//****************************************************************************
// The main JIT function for the 32 bit JIT. See code:ICorJitCompiler#EEToJitInterface for more on the EE-JIT
// interface. Things really don't get going inside the JIT until the code:Compiler::compCompile#Phases
// method. Usually that is where you want to go.
CorJitResult CILJit::compileMethod(
ICorJitInfo* compHnd, CORINFO_METHOD_INFO* methodInfo, unsigned flags, BYTE** entryAddress, ULONG* nativeSizeOfCode)
{
if (g_realJitCompiler != nullptr)
{
return g_realJitCompiler->compileMethod(compHnd, methodInfo, flags, entryAddress, nativeSizeOfCode);
}
CORJIT_FLAGS jitFlags = {0};
DWORD jitFlagsSize = 0;
#if COR_JIT_EE_VERSION > 460
if (flags == CORJIT_FLG_CALL_GETJITFLAGS)
{
jitFlagsSize = compHnd->getJitFlags(&jitFlags, sizeof(jitFlags));
}
#endif
assert(jitFlagsSize <= sizeof(jitFlags));
if (jitFlagsSize == 0)
{
jitFlags.corJitFlags = flags;
}
int result;
void* methodCodePtr = nullptr;
CORINFO_METHOD_HANDLE methodHandle = methodInfo->ftn;
JitTls jitTls(compHnd); // Initialize any necessary thread-local state
assert(methodInfo->ILCode);
result = jitNativeCode(methodHandle, methodInfo->scope, compHnd, methodInfo, &methodCodePtr, nativeSizeOfCode,
&jitFlags, nullptr);
if (result == CORJIT_OK)
{
*entryAddress = (BYTE*)methodCodePtr;
}
return CorJitResult(result);
}
/*****************************************************************************
* Notification from VM to clear any caches
*/
void CILJit::clearCache(void)
{
if (g_realJitCompiler != nullptr)
{
g_realJitCompiler->clearCache();
// Continue...
}
return;
}
/*****************************************************************************
* Notify vm that we have something to clean up
*/
BOOL CILJit::isCacheCleanupRequired(void)
{
BOOL doCleanup;
if (g_realJitCompiler != nullptr)
{
if (g_realJitCompiler->isCacheCleanupRequired())
{
return TRUE;
}
// Continue...
}
return FALSE;
}
void CILJit::ProcessShutdownWork(ICorStaticInfo* statInfo)
{
if (g_realJitCompiler != nullptr)
{
g_realJitCompiler->ProcessShutdownWork(statInfo);
// Continue, by shutting down this JIT as well.
}
#ifdef FEATURE_MERGE_JIT_AND_ENGINE
jitShutdown();
#endif
Compiler::ProcessShutdownWork(statInfo);
}
/*****************************************************************************
* Verify the JIT/EE interface identifier.
*/
void CILJit::getVersionIdentifier(GUID* versionIdentifier)
{
if (g_realJitCompiler != nullptr)
{
g_realJitCompiler->getVersionIdentifier(versionIdentifier);
return;
}
assert(versionIdentifier != nullptr);
memcpy(versionIdentifier, &JITEEVersionIdentifier, sizeof(GUID));
}
/*****************************************************************************
* Determine the maximum length of SIMD vector supported by this JIT.
*/
unsigned CILJit::getMaxIntrinsicSIMDVectorLength(DWORD cpuCompileFlags)
{
if (g_realJitCompiler != nullptr)
{
return g_realJitCompiler->getMaxIntrinsicSIMDVectorLength(cpuCompileFlags);
}
#ifdef _TARGET_AMD64_
#ifdef FEATURE_AVX_SUPPORT
if (((cpuCompileFlags & CORJIT_FLG_PREJIT) == 0) && ((cpuCompileFlags & CORJIT_FLG_FEATURE_SIMD) != 0) &&
((cpuCompileFlags & CORJIT_FLG_USE_AVX2) != 0))
{
if (JitConfig.EnableAVX() != 0)
{
return 32;
}
}
#endif // FEATURE_AVX_SUPPORT
return 16;
#else // !_TARGET_AMD64_
return 0;
#endif // !_TARGET_AMD64_
}
void CILJit::setRealJit(ICorJitCompiler* realJitCompiler)
{
g_realJitCompiler = realJitCompiler;
}
/*****************************************************************************
* Returns the number of bytes required for the given type argument
*/
unsigned Compiler::eeGetArgSize(CORINFO_ARG_LIST_HANDLE list, CORINFO_SIG_INFO* sig)
{
#if defined(_TARGET_AMD64_)
// Everything fits into a single 'slot' size
// to accommodate irregular sized structs, they are passed byref
CLANG_FORMAT_COMMENT_ANCHOR;
#ifdef FEATURE_UNIX_AMD64_STRUCT_PASSING
CORINFO_CLASS_HANDLE argClass;
CorInfoType argTypeJit = strip(info.compCompHnd->getArgType(sig, list, &argClass));
var_types argType = JITtype2varType(argTypeJit);
if (varTypeIsStruct(argType))
{
unsigned structSize = info.compCompHnd->getClassSize(argClass);
return structSize; // TODO: roundUp() needed here?
}
#endif // FEATURE_UNIX_AMD64_STRUCT_PASSING
return sizeof(size_t);
#else // !_TARGET_AMD64_
CORINFO_CLASS_HANDLE argClass;
CorInfoType argTypeJit = strip(info.compCompHnd->getArgType(sig, list, &argClass));
var_types argType = JITtype2varType(argTypeJit);
if (varTypeIsStruct(argType))
{
unsigned structSize = info.compCompHnd->getClassSize(argClass);
// make certain the EE passes us back the right thing for refanys
assert(argTypeJit != CORINFO_TYPE_REFANY || structSize == 2 * sizeof(void*));
// For each target that supports passing struct args in multiple registers
// apply the target specific rules for them here:
CLANG_FORMAT_COMMENT_ANCHOR;
#if FEATURE_MULTIREG_ARGS
#if defined(_TARGET_ARM64_)
// Any structs that are larger than MAX_PASS_MULTIREG_BYTES are always passed by reference
if (structSize > MAX_PASS_MULTIREG_BYTES)
{
// This struct is passed by reference using a single 'slot'
return TARGET_POINTER_SIZE;
}
else
{
// Is the struct larger than 16 bytes
if (structSize > (2 * TARGET_POINTER_SIZE))
{
var_types hfaType = GetHfaType(argClass); // set to float or double if it is an HFA, otherwise TYP_UNDEF
bool isHfa = (hfaType != TYP_UNDEF);
if (!isHfa)
{
// This struct is passed by reference using a single 'slot'
return TARGET_POINTER_SIZE;
}
}
// otherwise will we pass this struct by value in multiple registers
}
#elif defined(_TARGET_ARM_)
// otherwise will we pass this struct by value in multiple registers
#else
NYI("unknown target");
#endif // defined(_TARGET_XXX_)
#endif // FEATURE_MULTIREG_ARGS
// we pass this struct by value in multiple registers
return (unsigned)roundUp(structSize, TARGET_POINTER_SIZE);
}
else
{
unsigned argSize = sizeof(int) * genTypeStSz(argType);
assert(0 < argSize && argSize <= sizeof(__int64));
return (unsigned)roundUp(argSize, TARGET_POINTER_SIZE);
}
#endif
}
/*****************************************************************************/
GenTreePtr Compiler::eeGetPInvokeCookie(CORINFO_SIG_INFO* szMetaSig)
{
void *cookie, *pCookie;
cookie = info.compCompHnd->GetCookieForPInvokeCalliSig(szMetaSig, &pCookie);
assert((cookie == nullptr) != (pCookie == nullptr));
return gtNewIconEmbHndNode(cookie, pCookie, GTF_ICON_PINVKI_HDL);
}
//------------------------------------------------------------------------
// eeGetArrayDataOffset: Gets the offset of a SDArray's first element
//
// Arguments:
// type - The array element type
//
// Return Value:
// The offset to the first array element.
unsigned Compiler::eeGetArrayDataOffset(var_types type)
{
return varTypeIsGC(type) ? eeGetEEInfo()->offsetOfObjArrayData : offsetof(CORINFO_Array, u1Elems);
}
//------------------------------------------------------------------------
// eeGetMDArrayDataOffset: Gets the offset of a MDArray's first element
//
// Arguments:
// type - The array element type
// rank - The array rank
//
// Return Value:
// The offset to the first array element.
//
// Assumptions:
// The rank should be greater than 0.
unsigned Compiler::eeGetMDArrayDataOffset(var_types type, unsigned rank)
{
assert(rank > 0);
// Note that below we're specifically using genTypeSize(TYP_INT) because array
// indices are not native int.
return eeGetArrayDataOffset(type) + 2 * genTypeSize(TYP_INT) * rank;
}
/*****************************************************************************/
void Compiler::eeGetStmtOffsets()
{
ULONG32 offsetsCount;
DWORD* offsets;
ICorDebugInfo::BoundaryTypes offsetsImplicit;
info.compCompHnd->getBoundaries(info.compMethodHnd, &offsetsCount, &offsets, &offsetsImplicit);
/* Set the implicit boundaries */
info.compStmtOffsetsImplicit = (ICorDebugInfo::BoundaryTypes)offsetsImplicit;
/* Process the explicit boundaries */
info.compStmtOffsetsCount = 0;
if (offsetsCount == 0)
{
return;
}
info.compStmtOffsets = new (this, CMK_DebugInfo) IL_OFFSET[offsetsCount];
for (unsigned i = 0; i < offsetsCount; i++)
{
if (offsets[i] > info.compILCodeSize)
{
continue;
}
info.compStmtOffsets[info.compStmtOffsetsCount] = offsets[i];
info.compStmtOffsetsCount++;
}
info.compCompHnd->freeArray(offsets);
}
/*****************************************************************************
*
* Debugging support - Local var info
*/
void Compiler::eeSetLVcount(unsigned count)
{
assert(opts.compScopeInfo);
JITDUMP("VarLocInfo count is %d\n", count);
eeVarsCount = count;
if (eeVarsCount)
{
eeVars = (VarResultInfo*)info.compCompHnd->allocateArray(eeVarsCount * sizeof(eeVars[0]));
}
else
{
eeVars = nullptr;
}
}
void Compiler::eeSetLVinfo(unsigned which,
UNATIVE_OFFSET startOffs,
UNATIVE_OFFSET length,
unsigned varNum,
unsigned LVnum,
VarName name,
bool avail,
const Compiler::siVarLoc& varLoc)
{
// ICorDebugInfo::VarLoc and Compiler::siVarLoc have to overlap
// This is checked in siInit()
assert(opts.compScopeInfo);
assert(eeVarsCount > 0);
assert(which < eeVarsCount);
if (eeVars != nullptr)
{
eeVars[which].startOffset = startOffs;
eeVars[which].endOffset = startOffs + length;
eeVars[which].varNumber = varNum;
eeVars[which].loc = varLoc;
}
}
void Compiler::eeSetLVdone()
{
// necessary but not sufficient condition that the 2 struct definitions overlap
assert(sizeof(eeVars[0]) == sizeof(ICorDebugInfo::NativeVarInfo));
assert(opts.compScopeInfo);
#ifdef DEBUG
if (verbose)
{
eeDispVars(info.compMethodHnd, eeVarsCount, (ICorDebugInfo::NativeVarInfo*)eeVars);
}
#endif // DEBUG
info.compCompHnd->setVars(info.compMethodHnd, eeVarsCount, (ICorDebugInfo::NativeVarInfo*)eeVars);
eeVars = nullptr; // We give up ownership after setVars()
}
void Compiler::eeGetVars()
{
ICorDebugInfo::ILVarInfo* varInfoTable;
ULONG32 varInfoCount;
bool extendOthers;
info.compCompHnd->getVars(info.compMethodHnd, &varInfoCount, &varInfoTable, &extendOthers);
#ifdef DEBUG
if (verbose)
{
printf("getVars() returned cVars = %d, extendOthers = %s\n", varInfoCount, extendOthers ? "true" : "false");
}
#endif
// Over allocate in case extendOthers is set.
SIZE_T varInfoCountExtra = varInfoCount;
if (extendOthers)
{
varInfoCountExtra += info.compLocalsCount;
}
if (varInfoCountExtra == 0)
{
return;
}
info.compVarScopes = new (this, CMK_DebugInfo) VarScopeDsc[varInfoCountExtra];
VarScopeDsc* localVarPtr = info.compVarScopes;
ICorDebugInfo::ILVarInfo* v = varInfoTable;
for (unsigned i = 0; i < varInfoCount; i++, v++)
{
#ifdef DEBUG
if (verbose)
{
printf("var:%d start:%d end:%d\n", v->varNumber, v->startOffset, v->endOffset);
}
#endif
if (v->startOffset >= v->endOffset)
{
continue;
}
assert(v->startOffset <= info.compILCodeSize);
assert(v->endOffset <= info.compILCodeSize);
localVarPtr->vsdLifeBeg = v->startOffset;
localVarPtr->vsdLifeEnd = v->endOffset;
localVarPtr->vsdLVnum = i;
localVarPtr->vsdVarNum = compMapILvarNum(v->varNumber);
#ifdef DEBUG
localVarPtr->vsdName = gtGetLclVarName(localVarPtr->vsdVarNum);
#endif
localVarPtr++;
info.compVarScopesCount++;
}
/* If extendOthers is set, then assume the scope of unreported vars
is the entire method. Note that this will cause fgExtendDbgLifetimes()
to zero-initalize all of them. This will be expensive if it's used
for too many variables.
*/
if (extendOthers)
{
// Allocate a bit-array for all the variables and initialize to false
bool* varInfoProvided = (bool*)compGetMemA(info.compLocalsCount * sizeof(varInfoProvided[0]));
unsigned i;
for (i = 0; i < info.compLocalsCount; i++)
{
varInfoProvided[i] = false;
}
// Find which vars have absolutely no varInfo provided
for (i = 0; i < info.compVarScopesCount; i++)
{
varInfoProvided[info.compVarScopes[i].vsdVarNum] = true;
}
// Create entries for the variables with no varInfo
for (unsigned varNum = 0; varNum < info.compLocalsCount; varNum++)
{
if (varInfoProvided[varNum])
{
continue;
}
// Create a varInfo with scope over the entire method
localVarPtr->vsdLifeBeg = 0;
localVarPtr->vsdLifeEnd = info.compILCodeSize;
localVarPtr->vsdVarNum = varNum;
localVarPtr->vsdLVnum = info.compVarScopesCount;
#ifdef DEBUG
localVarPtr->vsdName = gtGetLclVarName(localVarPtr->vsdVarNum);
#endif
localVarPtr++;
info.compVarScopesCount++;
}
}
assert(localVarPtr <= info.compVarScopes + varInfoCountExtra);
if (varInfoCount != 0)
{
info.compCompHnd->freeArray(varInfoTable);
}
#ifdef DEBUG
if (verbose)
{
compDispLocalVars();
}
#endif // DEBUG
}
#ifdef DEBUG
void Compiler::eeDispVar(ICorDebugInfo::NativeVarInfo* var)
{
const char* name = nullptr;
if (var->varNumber == (DWORD)ICorDebugInfo::VARARGS_HND_ILNUM)
{
name = "varargsHandle";
}
else if (var->varNumber == (DWORD)ICorDebugInfo::RETBUF_ILNUM)
{
name = "retBuff";
}
else if (var->varNumber == (DWORD)ICorDebugInfo::TYPECTXT_ILNUM)
{
name = "typeCtx";
}
printf("%3d(%10s) : From %08Xh to %08Xh, in ", var->varNumber,
(VarNameToStr(name) == nullptr) ? "UNKNOWN" : VarNameToStr(name), var->startOffset, var->endOffset);
switch ((Compiler::siVarLocType)var->loc.vlType)
{
case VLT_REG:
case VLT_REG_BYREF:
case VLT_REG_FP:
printf("%s", getRegName(var->loc.vlReg.vlrReg));
if (var->loc.vlType == (ICorDebugInfo::VarLocType)VLT_REG_BYREF)
{
printf(" byref");
}
break;
case VLT_STK:
case VLT_STK_BYREF:
if ((int)var->loc.vlStk.vlsBaseReg != (int)ICorDebugInfo::REGNUM_AMBIENT_SP)
{
printf("%s[%d] (1 slot)", getRegName(var->loc.vlStk.vlsBaseReg), var->loc.vlStk.vlsOffset);
}
else
{
printf(STR_SPBASE "'[%d] (1 slot)", var->loc.vlStk.vlsOffset);
}
if (var->loc.vlType == (ICorDebugInfo::VarLocType)VLT_REG_BYREF)
{
printf(" byref");
}
break;
#ifndef _TARGET_AMD64_
case VLT_REG_REG:
printf("%s-%s", getRegName(var->loc.vlRegReg.vlrrReg1), getRegName(var->loc.vlRegReg.vlrrReg2));
break;
case VLT_REG_STK:
if ((int)var->loc.vlRegStk.vlrsStk.vlrssBaseReg != (int)ICorDebugInfo::REGNUM_AMBIENT_SP)
{
printf("%s-%s[%d]", getRegName(var->loc.vlRegStk.vlrsReg),
getRegName(var->loc.vlRegStk.vlrsStk.vlrssBaseReg), var->loc.vlRegStk.vlrsStk.vlrssOffset);
}
else
{
printf("%s-" STR_SPBASE "'[%d]", getRegName(var->loc.vlRegStk.vlrsReg),
var->loc.vlRegStk.vlrsStk.vlrssOffset);
}
break;
case VLT_STK_REG:
unreached(); // unexpected
case VLT_STK2:
if ((int)var->loc.vlStk2.vls2BaseReg != (int)ICorDebugInfo::REGNUM_AMBIENT_SP)
{
printf("%s[%d] (2 slots)", getRegName(var->loc.vlStk2.vls2BaseReg), var->loc.vlStk2.vls2Offset);
}
else
{
printf(STR_SPBASE "'[%d] (2 slots)", var->loc.vlStk2.vls2Offset);
}
break;
case VLT_FPSTK:
printf("ST(L-%d)", var->loc.vlFPstk.vlfReg);
break;
case VLT_FIXED_VA:
printf("fxd_va[%d]", var->loc.vlFixedVarArg.vlfvOffset);
break;
#endif // !_TARGET_AMD64_
default:
unreached(); // unexpected
}
printf("\n");
}
// Same parameters as ICorStaticInfo::setVars().
void Compiler::eeDispVars(CORINFO_METHOD_HANDLE ftn, ULONG32 cVars, ICorDebugInfo::NativeVarInfo* vars)
{
printf("*************** Variable debug info\n");
printf("%d vars\n", cVars);
for (unsigned i = 0; i < cVars; i++)
{
eeDispVar(&vars[i]);
}
}
#endif // DEBUG
/*****************************************************************************
*
* Debugging support - Line number info
*/
void Compiler::eeSetLIcount(unsigned count)
{
assert(opts.compDbgInfo);
eeBoundariesCount = count;
if (eeBoundariesCount)
{
eeBoundaries = (boundariesDsc*)info.compCompHnd->allocateArray(eeBoundariesCount * sizeof(eeBoundaries[0]));
}
else
{
eeBoundaries = nullptr;
}
}
void Compiler::eeSetLIinfo(
unsigned which, UNATIVE_OFFSET nativeOffset, IL_OFFSET ilOffset, bool stkEmpty, bool callInstruction)
{
assert(opts.compDbgInfo);
assert(eeBoundariesCount > 0);
assert(which < eeBoundariesCount);
if (eeBoundaries != nullptr)
{
eeBoundaries[which].nativeIP = nativeOffset;
eeBoundaries[which].ilOffset = ilOffset;
eeBoundaries[which].sourceReason = stkEmpty ? ICorDebugInfo::STACK_EMPTY : 0;
eeBoundaries[which].sourceReason |= callInstruction ? ICorDebugInfo::CALL_INSTRUCTION : 0;
}
}
void Compiler::eeSetLIdone()
{
assert(opts.compDbgInfo);
#if defined(DEBUG)
if (verbose)
{
eeDispLineInfos();
}
#endif // DEBUG
// necessary but not sufficient condition that the 2 struct definitions overlap
assert(sizeof(eeBoundaries[0]) == sizeof(ICorDebugInfo::OffsetMapping));
info.compCompHnd->setBoundaries(info.compMethodHnd, eeBoundariesCount, (ICorDebugInfo::OffsetMapping*)eeBoundaries);
eeBoundaries = nullptr; // we give up ownership after setBoundaries();
}
#if defined(DEBUG)
/* static */
void Compiler::eeDispILOffs(IL_OFFSET offs)
{
const char* specialOffs[] = {"EPILOG", "PROLOG", "NO_MAP"};
switch ((int)offs) // Need the cast since offs is unsigned and the case statements are comparing to signed.
{
case ICorDebugInfo::EPILOG:
case ICorDebugInfo::PROLOG:
case ICorDebugInfo::NO_MAPPING:
assert(DWORD(ICorDebugInfo::EPILOG) + 1 == (unsigned)ICorDebugInfo::PROLOG);
assert(DWORD(ICorDebugInfo::EPILOG) + 2 == (unsigned)ICorDebugInfo::NO_MAPPING);
int specialOffsNum;
specialOffsNum = offs - DWORD(ICorDebugInfo::EPILOG);
printf("%s", specialOffs[specialOffsNum]);
break;
default:
printf("0x%04X", offs);
}
}
/* static */
void Compiler::eeDispLineInfo(const boundariesDsc* line)
{
printf("IL offs ");
eeDispILOffs(line->ilOffset);
printf(" : 0x%08X", line->nativeIP);
if (line->sourceReason != 0)
{
// It seems like it should probably never be zero since ICorDebugInfo::SOURCE_TYPE_INVALID is zero.
// However, the JIT has always generated this and printed "stack non-empty".
printf(" ( ");
if ((line->sourceReason & ICorDebugInfo::STACK_EMPTY) != 0)
{
printf("STACK_EMPTY ");
}
if ((line->sourceReason & ICorDebugInfo::CALL_INSTRUCTION) != 0)
{
printf("CALL_INSTRUCTION ");
}
if ((line->sourceReason & ICorDebugInfo::CALL_SITE) != 0)
{
printf("CALL_SITE ");
}
printf(")");
}
printf("\n");
// We don't expect to see any other bits.
assert((line->sourceReason & ~(ICorDebugInfo::STACK_EMPTY | ICorDebugInfo::CALL_INSTRUCTION)) == 0);
}
void Compiler::eeDispLineInfos()
{
printf("IP mapping count : %d\n", eeBoundariesCount); // this might be zero
for (unsigned i = 0; i < eeBoundariesCount; i++)
{