IAR Embedded Workbench for Renesas RL78

• The Renesas RL78/G24 Flexible Application Accelerator (FAA) co-processor is supported
  

  • The Renesas FAA assembler is incorporated in the IAR Embedded Workbench
  • FAA assembler-generated output is linked with the IAR linker
  • The IAR C-SPY debugger supports multicore debugging for the FAA core

• Improved compliance with the CC-RL ABI specification
  

  Additional standard library functions and runtime routines have been implemented.

• Debugging support for flash self-programming
  

  Debugging support while self-programming is in progress has been added for G2x and F2x devices.

• Program corrections
  

  Errors have been corrected in the compiler, linker, and in IAR C-STAT.

• Library support for the C++17 language standard
  The toolset includes a new C++ library that supports C++17 library features. 
• Additional GNU C language extensions
  The IAR C/C++ Compiler supports a number of new GCC-style operators, attributes and expressions in extended language mode. 
• Editor and IDE enhancements
  • Editor themes - a new way to set up the colors and fonts in the text editor
  • Syntax feedback - instant syntax suggestions while typing
  • Improved parameter hints
  • Window color themes - dark mode
  • Gray out inactive code support
• Iarbuild enhancements
  The iarbuild command line build utility now supports:
• Generating a Ninja build file based on the IAR Embedded Workbench project format
• Generating a JSON description of the Embedded Workbench project
• More C-STAT reporting and configuration methods
• 64-bit Windows application
  IAR Embedded Workbench now runs as a 64-bit Windows application.
• Visual Studio Code support
  The IAR Build and IAR C-SPY Debug extensions available on Microsoft Marketplace enable you to work in Visual Studio Code (with IAR Embedded Workbench installed) to:
• Build IAR Embedded Workbench projects
• Run the C-STAT static analysis tool
• Debug applications using the same range of hardware/debug probes as in IAR Embedded Workbench. (An initial debug session with IAR Embedded Workbench is required to fill in the settings in the Hardware setup dialog box, prior to debugging in Visual Studio Code)
• C-STAT enhancements
• MISRA C:2012 Amendment 1
  The static analysis tool C-STAT has extended its coverage of the MISRA C:2012 Coding Standard and now fully supports MISRA C:2012 Amendment 1. This amendment adds 14 additional rules to MISRA C:2012 with a focus on security concerns highlighted by the ISO C Secure Guidelines. Several of these address specific issues pertaining to the use of untrustworthy data, a well-known security vulnerability.
• MISRA C:2012 Amendment 2
  

  The static analysis tool C-STAT has extended its coverage of the MISRA C:2012 Coding Standard and now fully supports MISRA C:2012 Amendment 2. This Amendment adds two additional rules to MISRA C:2012 and introduces support for ISO/IEC 9899:2011, commonly referred to as "C11".

• Improved performance
  Depending on the project, the analysis can be up to 40% faster and memory consumption reduced by up to 20%, compared to the previous version of C-STAT.
• Updated device support
  The device support files have been updated to the most recent version from Renesas.
• Updated user documentation
  The C/C++ Development Guide, C-SPY Debugging Guide, and IDE Project Management and Building Guide have been updated to reflect the product changes.

• RL78/G23 microcontroller group support
  The RL78/G23 group of microcontrollers is now supported.
• IAR Build Tools for Linux
  A new product, IAR Build Tools for Renesas RL78, is available. It requires a separate product license and is distributed as a Debian package for Ubuntu containing the IAR C/C++ Compiler, IAR Assembler, Linker and library tools, C-STAT, IARBuild, and runtime libraries. Get product info
• C-STAT enhancements
  • Extended coverage of CERT C
    The static analysis tool C-STAT has extended its coverage of the SEI CERT C Coding Standard. The SEI CERT C Coding Standard's goal is to provide rules for developing safe, reliable, and secure systems in the C programming language, with support for C11 constructs. C-STAT covers all rules in the different CERT C sections listed on the CERT C wiki as of January 2020, with the exception of the API, CON, POS, and WIN sections, which are not applicable to IAR Systems products, yielding a total of 90 covered rules.
  • Link analysis trace information
    The link analysis messages now display trace information when relevant. For checks looking for conflicting symbol names, all conflicting declarations are now listed in the trace information instead of each pair of conflicts being described in a separate message. This might lead to fewer reported messages for the same number of found issues.
• Renesas Smart Configurator included
  The Renesas RL78 Smart Configurator V1.0.1 has been included.

C18 support
The default Standard C is now C18 (ISO/IEC 9899:2018).

C++17 support
The compiler now supports almost all C++17 features. The C++ library supports C++14 with no C++17 additions.

Improved Source Browser
The following improvements have been made to the Source Browser:

• The source browser data is generated faster as it is now running as a separate thread.
• New Source Browser Log window.
• Status indicator in the status bar.
• Enhanced feedback in case source browsing data cannot be generated.

EZ-CUBE2 On-Chip Debug Emulator support
The EZ-CUBE2 On-Chip Debug Emulator, primarily targeted for the Chinese market, is now supported.

E2 emulator power debugging in C-SPY
The E2 emulator allows you to measure the dynamically changing current drawn by the user system. This is visualized as a graph in the C-SPY Timeline window as well as a list of time-current value pairs in the Power Log window. It is also possible to stop execution when the current goes above or below a certain user-defined threshold value.

Documentation Comments support in the editor
The editor can distinguish comments that start with /**, /*!, /// or //! as Documentation Comments. Inside a Documentation Comment, the editor can recognize keywords that begin with \ or @. If the keyword is recognized as a doxygen keyword, the Documentation Comment will appear in tooltips and parameter hints for variables and functions. See IAR Embedded Workbench IDE Project Management and Building Guide for more information.

Updated user documentation
The IDE Project Management and Building Guide, C-SPY Debugging Guide and C/C++ Development Guide have been updated to reflect the product changes.

• IAR Embedded Workbench IDE Project Management and Building Guide
• IAR C/C++ Development Guide
• IAR Assembler Reference Guide
• IAR Linker and Library Tools Reference Guide
• C-SPY Debugging Guide
• IAR Embedded Workbench MISRA C:2004 Reference Guide
• IAR Embedded Workbench MISRA C:1998 Reference Guide
• Migration Guide from the CS+ CA78K0R toolchain for RL78 to IAR Embedded Workbench
• Migration Guide from Renesas toolchain for M16C/R8C to IAR Embedded Workbench

Hardware debugging support

• Renesas E2 Emulator
• Renesas E1 Emulator
• Renesas E2 Emulator Lite
• Renesas EZ-Cube
• Renesas IECUBE
• Renesas E20
• Renesas TK

RTOS support

• Micrium μC/OS-II
• OSEK Run Time Interface (ORTI)
• embOS
• Express Logic
• FreeRTOS
• CMX

Each RTOS plugin installs a number of new windows in C-SPY, most importantly the task or thread list windows where task-specific breakpoints can be specified and task-specific steps executed. Different inspector windows display the contents of the internal data structures of the RTOS such as timers, queues, semaphores, resources and mailboxes.

IAR C/C++ Compilerは、CおよびC++プログラム言語の各種方言や、組込みプログラミング用の様々な拡張機能に対応します（あらゆる実装に対応する言語規格をすべてサポートしているわけではありません）。厳格な規格コンプライアンスに対応するために拡張機能を禁止することも可能です。

一般的なデバッガやエミュレータのほとんどと互換性のある業界標準のデバッグおよびイメージフォーマットを幅広くサポートしています。これにはELF/DWARFなどが含まれます。

ISO/ANSI C/C++ へのコンプライアンス

IAR C/C++ Compilerは、次のようなCプログラム言語規格をフリースタンディングに実装しています。

• INCITS/ISO/IEC 9899:2018、別名C18 (最新バージョンのみ)

• IAR C/C++ CompilerはC++17のすべての機能に対応。C++ライブラリはC++14に対応、C++17追加機能のサポートなし。(最新バージョンのみ)

• ISO/IEC 14882:2015、別名C++14

• INCITS/ISO/IEC 9899:2012、別名C11

• ANSI X3.159-1989、別名C89

IEEE 754規格

IAR Embedded Workbenchは浮動小数点演算のIEEE 754規格に対応しています。

MISRA C

MISRA Cは、MISRA (自動車産業ソフトウェア信頼性協会) が開発したCプログラム言語のためのソフトウェア開発規格で、SO規格のC言語で記述する組込みシステムでのコードの安全性、可搬性、信頼性を確保することを主な目的としています。

MISRA C規格の初版「自動車用ソフトウェアでC言語を利用するための手引き(Guidelines for the use of the C language in vehicle based software)」は、1998年に策定されました。2004年には第2版が作成され、規則番号の全面的な見直しなどの重要な変更が数多く行われました。さらに、拡張サポート付きのMISRA C:2012および安全でないコード構造を識別するためのMISRA C++:2008も規格に追加されました。

IAR Embedded Workbenchの特長であるアドオン製品 C-STATによって、MISRA C:2004、MISRA C++:2008、MISRA C:2012が策定した規則への準拠をチェックすることができます。

テスト検証

IARは、次のような市販のテストスイートを使って、IARのツールが規格に準拠していることを確認しています。

• ISO/IEC Cへの準拠を確認するPlum Hall Validationテストスイート

• C++への準拠を確認するPerennial EC++ Validation Suite

• IARライブラリのC/C++規格への準拠およびC++規格に対するSTL実装を検証するDinkum C++ Proofer

上記の市販スイーツに加えて、いくつかの内製テストスイートを使用して、新機能の検証、リグレッションテスト、エラー修正に対する検証などを実施しています。