From 7cc95c3a57a79864fa60de4827193fa7aadac92c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= Date: Mon, 1 Jan 2018 21:29:37 +0100 Subject: Simplify how we define exceptions Exceptions definition was pretty much just copy and past. That can do preprocessor for us too so use it for it. --- qtmips_machine/qtmipsexception.h | 115 +++++++++++++++++---------------------- 1 file changed, 50 insertions(+), 65 deletions(-) (limited to 'qtmips_machine/qtmipsexception.h') diff --git a/qtmips_machine/qtmipsexception.h b/qtmips_machine/qtmipsexception.h index 8cfc9be..db8cf5e 100644 --- a/qtmips_machine/qtmipsexception.h +++ b/qtmips_machine/qtmipsexception.h @@ -6,81 +6,66 @@ namespace machine { -#define QTMIPS_EXCEPTION(TYPE, REASON, EXT) (machine::QtMipsException ## TYPE (QString(REASON), QString(EXT), QString(__FILE__), __LINE__)) -#define QTMIPS_ARGS_COMMON QString reason, QString ext, QString file, int line +#define QTMIPS_EXCEPTION(TYPE, REASON, EXT) (machine::QtMipsException##TYPE (QString(REASON), QString(EXT), QString(__FILE__), __LINE__)) // Base exception for all machine ones class QtMipsException : public std::exception { public: - QtMipsException(QTMIPS_ARGS_COMMON); + QtMipsException(QString reason, QString ext, QString file, int line); const char *what() const throw(); QString msg(bool pos) const; protected: - QString reason, ext, file; + QString name, reason, ext, file; int line; }; -// Exception durring input loading -class QtMipsExceptionInput : public QtMipsException { -public: - QtMipsExceptionInput(QTMIPS_ARGS_COMMON); -}; - -// Exceptions caused by machine invalid input or unsupported action -class QtMipsExceptionRuntime : public QtMipsException { -public: - QtMipsExceptionRuntime(QTMIPS_ARGS_COMMON); -}; - -// Decoded instruction is not supported. -// This can be cause by really using some unimplemented instruction or because of problems in instruction decode. -class QtMipsExceptionUnsupportedInstruction : public QtMipsExceptionRuntime { -public: - QtMipsExceptionUnsupportedInstruction(QTMIPS_ARGS_COMMON); -}; - -// Decoded ALU operation is not supported -// This is basically same exception as QtMipsExceptionUnsupportedInstruction but it is emmited from ALU when executed and not before that. -class QtMipsExceptionUnsupportedAluOperation : public QtMipsExceptionRuntime { -public: - QtMipsExceptionUnsupportedAluOperation(QTMIPS_ARGS_COMMON); -}; - -// Integer operation resulted to overflow (or underflow as we are working with unsigned values) -// This is for sure caused by program it self. -class QtMipsExceptionOverflow : public QtMipsExceptionRuntime { -public: - QtMipsExceptionOverflow(QTMIPS_ARGS_COMMON); -}; - -// Instruction is jumping to unaligned address (ADDR%4!=0) -// This can be caused by bug or by user program as it can be jumping relative to register -// This shouldn't be happening with non-register jumps as those should be verified by compiler -class QtMipsExceptionUnalignedJump : public QtMipsExceptionRuntime { -public: - QtMipsExceptionUnalignedJump(QTMIPS_ARGS_COMMON); -}; - -// Used unknown MemoryAccess control value (write_ctl or read_ctl) -// This can be raised by invalid instruction but in such case we shoul raise UnknownInstruction instead -// So this should signal just some QtMips bug. -class QtMipsExceptionUnknownMemoryControl : public QtMipsExceptionRuntime { -public: - QtMipsExceptionUnknownMemoryControl(QTMIPS_ARGS_COMMON); -}; - -// Trying to access address outside of the memory -// As we are simulating whole 32bit memory address space then this is most probably QtMips bug if raised not program. -class QtMipsExceptionOutOfMemoryAccess : public QtMipsExceptionRuntime { -public: - QtMipsExceptionOutOfMemoryAccess(QTMIPS_ARGS_COMMON); -}; - -// This is sanity check exception -class QtMipsExceptionSanity : public QtMipsException { -public: - QtMipsExceptionSanity(QTMIPS_ARGS_COMMON); -}; +/* This is list of all QtMips specific exceptions + * + * Input: + * Exception durring input loading + * Runtime: + * Exceptions caused by machine invalid input or unsupported action + * UnsupportedInstruction: + * Decoded instruction is not supported. + * This can be cause by really using some unimplemented instruction or because of problems in instruction decode. + * UnsupportedAluOperation: + * Decoded ALU operation is not supported + * This is basically same exception as QtMipsExceptionUnsupportedInstruction but it is emmited from ALU when executed and not before that. + * Overflow: + * Integer operation resulted to overflow (or underflow as we are working with unsigned values) + * This is for sure caused by program it self. + * UnalignedJump: + * Instruction is jumping to unaligned address (ADDR % 4 != 0) + * This can be caused by bug or by user program as it can be jumping relative to register + * This shouldn't be happening with non-register jumps as those should be verified by compiler + * UnknownMemoryControl: + * Used unknown MemoryAccess control value (write_ctl or read_ctl) + * This can be raised by invalid instruction but in such case we shoul raise UnknownInstruction instead + * So this should signal just some QtMips bug. + * OutOfMemoryAccess: + * Trying to access address outside of the memory + * As we are simulating whole 32bit memory address space then this is most probably QtMips bug if raised not program. + * Sanity: + * This is sanity check exception + */ +#define QTMIPS_EXCEPTIONS \ + EXCEPTION(Input,) \ + EXCEPTION(Runtime,) \ + EXCEPTION(UnsupportedInstruction, Runtime) \ + EXCEPTION(UnsupportedAluOperation, Runtime) \ + EXCEPTION(Overflow, Runtime) \ + EXCEPTION(UnalignedJump, Runtime) \ + EXCEPTION(UnknownMemoryControl, Runtime) \ + EXCEPTION(OutOfMemoryAccess, Runtime) \ + EXCEPTION(Sanity,) + +#define EXCEPTION(NAME, PARENT) \ + class QtMipsException##NAME : public QtMipsException##PARENT { \ + public: \ + QtMipsException##NAME(QString reason, QString ext, QString file, int line); \ + }; +QTMIPS_EXCEPTIONS +#undef EXCEPTION #define SANITY_ASSERT(COND, MSG) do { if (!(COND)) throw QTMIPS_EXCEPTION(Sanity, "Sanity check failed (" #COND ")", MSG); } while (false) -- cgit v1.2.3