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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.
/*****************************************************************************/
#ifndef _ERROR_H_
#define _ERROR_H_
/*****************************************************************************/
#include <corjit.h> // for CORJIT_INTERNALERROR
#include <safemath.h> // For FitsIn, used by SafeCvt methods.
#define FATAL_JIT_EXCEPTION 0x02345678
class Compiler;
struct ErrorTrapParam
{
int errc;
ICorJitInfo* jitInfo;
EXCEPTION_POINTERS exceptionPointers;
ErrorTrapParam()
{
jitInfo = nullptr;
}
};
// Only catch JIT internal errors (will not catch EE generated Errors)
extern LONG __JITfilter(PEXCEPTION_POINTERS pExceptionPointers, LPVOID lpvParam);
#define setErrorTrap(compHnd, ParamType, paramDef, paramRef) \
struct __JITParam : ErrorTrapParam \
{ \
ParamType param; \
} __JITparam; \
__JITparam.errc = CORJIT_INTERNALERROR; \
__JITparam.jitInfo = compHnd; \
__JITparam.param = paramRef; \
PAL_TRY(__JITParam*, __JITpParam, &__JITparam) \
{ \
ParamType paramDef = __JITpParam->param;
// Only catch JIT internal errors (will not catch EE generated Errors)
#define impJitErrorTrap() \
} \
PAL_EXCEPT_FILTER(__JITfilter) \
{ \
int __errc = __JITparam.errc; \
(void)__errc;
#define endErrorTrap() \
} \
PAL_ENDTRY
#define finallyErrorTrap() \
} \
PAL_FINALLY \
{
/*****************************************************************************/
// clang-format off
extern void debugError(const char* msg, const char* file, unsigned line);
extern void DECLSPEC_NORETURN badCode();
extern void DECLSPEC_NORETURN badCode3(const char* msg, const char* msg2, int arg, __in_z const char* file, unsigned line);
extern void DECLSPEC_NORETURN noWay();
extern void DECLSPEC_NORETURN NOMEM();
extern void DECLSPEC_NORETURN fatal(int errCode);
extern void DECLSPEC_NORETURN noWayAssertBody();
extern void DECLSPEC_NORETURN noWayAssertBody(const char* cond, const char* file, unsigned line);
// Conditionally invoke the noway assert body. The conditional predicate is evaluated using a method on the tlsCompiler.
// If a noway_assert is hit, we ask the Compiler whether to raise an exception (i.e., conditionally raise exception.)
// To have backward compatibility between v4.5 and v4.0, in min-opts we take a shot at codegen rather than rethrow.
extern void ANALYZER_NORETURN noWayAssertBodyConditional(
#ifdef FEATURE_TRACELOGGING
const char* file, unsigned line
#endif
);
extern void ANALYZER_NORETURN noWayAssertBodyConditional(const char* cond, const char* file, unsigned line);
// Define MEASURE_NOWAY to 1 to enable code to count and rank individual noway_assert calls by occurrence.
// These asserts would be dynamically executed, but not necessarily fail. The provides some insight into
// the dynamic prevalence of these (if not a direct measure of their cost), which exist in non-DEBUG as
// well as DEBUG builds.
#ifdef DEBUG
#define MEASURE_NOWAY 1
#else // !DEBUG
#define MEASURE_NOWAY 0
#endif // !DEBUG
#if MEASURE_NOWAY
extern void RecordNowayAssertGlobal(const char* filename, unsigned line, const char* condStr);
#define RECORD_NOWAY_ASSERT(condStr) RecordNowayAssertGlobal(__FILE__, __LINE__, condStr);
#else
#define RECORD_NOWAY_ASSERT(condStr)
#endif
#ifdef DEBUG
#define NO_WAY(msg) (debugError(msg, __FILE__, __LINE__), noWay())
// Used for fallback stress mode
#define NO_WAY_NOASSERT(msg) noWay()
#define BADCODE(msg) (debugError(msg, __FILE__, __LINE__), badCode())
#define BADCODE3(msg, msg2, arg) badCode3(msg, msg2, arg, __FILE__, __LINE__)
// Used for an assert that we want to convert into BADCODE to force minopts, or in minopts to force codegen.
#define noway_assert(cond) \
do \
{ \
RECORD_NOWAY_ASSERT(#cond) \
if (!(cond)) \
{ \
noWayAssertBodyConditional(#cond, __FILE__, __LINE__); \
} \
} while (0)
#define unreached() noWayAssertBody("unreached", __FILE__, __LINE__)
#define NOWAY_MSG(msg) noWayAssertBodyConditional(msg, __FILE__, __LINE__)
#else // !DEBUG
#define NO_WAY(msg) noWay()
#define BADCODE(msg) badCode()
#define BADCODE3(msg, msg2, arg) badCode()
#ifdef FEATURE_TRACELOGGING
#define NOWAY_ASSERT_BODY_ARGUMENTS __FILE__, __LINE__
#else
#define NOWAY_ASSERT_BODY_ARGUMENTS
#endif
#define noway_assert(cond) \
do \
{ \
RECORD_NOWAY_ASSERT(#cond) \
if (!(cond)) \
{ \
noWayAssertBodyConditional(NOWAY_ASSERT_BODY_ARGUMENTS); \
} \
} while (0)
#define unreached() noWayAssertBody()
#define NOWAY_MSG(msg) noWayAssertBodyConditional(NOWAY_ASSERT_BODY_ARGUMENTS)
#endif // !DEBUG
// IMPL_LIMITATION is called when we encounter valid IL that is not
// supported by our current implementation because of various
// limitations (that could be removed in the future)
#define IMPL_LIMITATION(msg) NO_WAY(msg)
#if 1 // All platforms currently enable NYI; this should be a tighter condition to exclude some platforms from NYI
#if defined(ALT_JIT)
// This guy can return based on Config flag/Debugger
extern void notYetImplemented(const char* msg, const char* file, unsigned line);
#define NYIRAW(msg) notYetImplemented(msg, __FILE__, __LINE__)
#else // !defined(ALT_JIT)
#define NYIRAW(msg) NOWAY_MSG(msg)
#endif // !defined(ALT_JIT)
#define NYI(msg) NYIRAW("NYI: " msg)
#define NYI_IF(cond, msg) if (cond) NYIRAW("NYI: " msg)
#ifdef _TARGET_AMD64_
#define NYI_AMD64(msg) NYIRAW("NYI_AMD64: " msg)
#define NYI_X86(msg) do { } while (0)
#define NYI_ARM(msg) do { } while (0)
#define NYI_ARM64(msg) do { } while (0)
#elif defined(_TARGET_X86_)
#define NYI_AMD64(msg) do { } while (0)
#define NYI_X86(msg) NYIRAW("NYI_X86: " msg)
#define NYI_ARM(msg) do { } while (0)
#define NYI_ARM64(msg) do { } while (0)
#elif defined(_TARGET_ARM_)
#define NYI_AMD64(msg) do { } while (0)
#define NYI_X86(msg) do { } while (0)
#define NYI_ARM(msg) NYIRAW("NYI_ARM: " msg)
#define NYI_ARM64(msg) do { } while (0)
#elif defined(_TARGET_ARM64_)
#define NYI_AMD64(msg) do { } while (0)
#define NYI_X86(msg) do { } while (0)
#define NYI_ARM(msg) do { } while (0)
#define NYI_ARM64(msg) NYIRAW("NYI_ARM64: " msg)
#else
#error "Unknown platform, not x86, ARM, or AMD64?"
#endif
#else // NYI not available; make it an assert.
#define NYI(msg) assert(!msg)
#define NYI_AMD64(msg) do { } while (0)
#define NYI_ARM(msg) do { } while (0)
#define NYI_ARM64(msg) do { } while (0)
#endif // NYI not available
// clang-format on
#if defined(_HOST_X86_) && !defined(FEATURE_PAL)
// While debugging in an Debugger, the "int 3" will cause the program to break
// Outside, the exception handler will just filter out the "int 3".
#define BreakIfDebuggerPresent() \
do \
{ \
__try \
{ \
__asm {int 3} \
} \
__except (EXCEPTION_EXECUTE_HANDLER) \
{ \
} \
} while (0)
#else
#define BreakIfDebuggerPresent() \
do \
{ \
if (IsDebuggerPresent()) \
DebugBreak(); \
} while (0)
#endif
#ifdef DEBUG
DWORD getBreakOnBadCode();
#endif
// For narrowing numeric conversions, the following two methods ensure that the
// source value fits in the destination type, using either "assert" or
// "noway_assert" to validate the conversion. Obviously, each returns the source value as
// the destination type.
// (There is an argument that these should be macros, to let the preprocessor capture
// a more useful file/line for the error message. But then we have to use comma expressions
// so that these can be used in expressions, etc., which is ugly. So I propose we rely on
// getting stack traces in other ways.)
template <typename Dst, typename Src>
inline Dst SafeCvtAssert(Src val)
{
assert(FitsIn<Dst>(val));
return static_cast<Dst>(val);
}
template <typename Dst, typename Src>
inline Dst SafeCvtNowayAssert(Src val)
{
noway_assert(FitsIn<Dst>(val));
return static_cast<Dst>(val);
}
#endif
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