IAR Embedded Workbench for Renesas V850

Updated IDE look and feel

The IDE has new artwork, enhancements to window management and docking, customizable toolbars, revised Information Center, and new tutorials.

Enhanced Registers and Symbols windows in C-SPY

The C-SPY Symbols and Registers windows have been re-designed with new features. The Symbols window now has a filtering function and a new column displaying to which program module a certain symbol belongs. Some of the new features in the Registers window are drag-and-drop support from source code windows, detailed register tool-tip information, and improved handling of user-defined registers groups.

Improved C-STAT Static analysis

• New checks have been added including about 20 new checks in the MISRA C 2004 package.
• Improved analysis engine which increases the analysis precision.
• The time-consuming false-positive analysis is now disabled by default but can be enabled by an option in the IAR Embedded Workbench IDE or on the command line.
• A new option in the IAR Embedded Workbench IDE makes it possible to limit the number of messages generated per check and per file.
• C-STAT message suppression can now be controlled by directives placed in comments in the source files.
• A new option --deterministic has been added to ensure a deterministic amount of messages when running icstat with multiple threads, so that the amount of messages stays approximately the same from one analysis run to another. This option puts a limit on the option --parallel.

Updated user documentation

The IDE Project Management and Building Guide has been updated to reflect the product changes.

C-STAT

The add-on product C-STAT for static analysis is now supported. C-STAT features innovative static analysis that can detect defects, bugs, and security vulnerabilities as defined by CERT and the Common Weakness Enumeration, as well as help keeping code compliant to coding standards like MISRA C:2012/2004 or MISRA C++:2008. 

Parallel build

IAR Embedded Workbench can now build projects using multiple parallel processes. This can improve build performance significantly on multi-core or multiple processor computers. To enable parallel build, select Tools>Options>Project>Enable parallel build.

Custom argument variables

Custom argument variables can be used in IAR Embedded Workbench whenever there is a need for a macro-like expansion that depends on the current context. This could for example be in arguments to an external build tool.

Saving C-SPY Watch window content

In the C-SPY Watch window family, you can now choose Save All to File from the context menu to save the contents of the current window to a text file.

Updated device support

SFR header files, linker configuration files, and device description files have been added for the latest Renesas devices.

Updated user documentation

The IDE Project Management and Building Guide, and the C-SPY Debugging Guide have been updated to reflect the product changes.

• IAR Embedded Workbench IDE Project Management and Building Guide
• IAR C/C++ Compiler Reference Guide for V850
• IAR Assembler Reference Guide for V850
• IAR Linker and Library Tools Reference Guide
• IAR Embedded Workbench C-SPY Debugging Guide for V850
• IAR Embedded Workbench® MISRA C:1998 Reference Guide
• IAR Embedded Workbench® MISRA C:2004 Reference Guide
• IAR Embedded Workbench Migration Guide

IAR C/C++ 编译器提供 C 和 C++ 编程语言的不同方言，以及针对嵌入式编程的不同扩展（请注意，并非所有语言标准都支持所有目标实现）。编译器可以被指示禁用扩展，以严格遵守标准。

支持多种行业标准的调试和映像格式，与大多数流行的调试器和模拟器兼容。其中包括 ELF/DWARF（如适用）。

符合 ISO/ANSI C/C++ 标准

IAR C/C++ 编译器遵守以下 C 语言编程标准的独立实现：

• INCITS/ISO/IEC 9899:2018，即 C18（仅限最新版本）

• 编译器支持所有 C++17 功能。C++ 库支持 C++14，没有补充 C++17（仅限最新版本）

• ISO/IEC 14882:2015，即 C++14

• INCITS/ISO/IEC 9899:2012，即 C11

• ANSI X3.159-1989，即 C89

不同编译器的 ISO/ANSI C/C++ 兼容性水平存在差异。如需了解完整信息，请参考您所选产品中的 IAR C/C++ 编译器用户文档。

IEEE 754 标准

IAR Embedded Workbench 支持 IEEE 754 标准的浮点运算。

MISRA C

MISRA C 是由 MISRA（汽车工业软件可靠性协会）制定的 C 编程语言的软件开发标准。它的目的是促进嵌入式系统中的代码安全、可移植性和可靠性，特别是那些用 ISO C 语言编程的系统。

MISRA C 标准的第一版是《汽车软件中 C 语言的使用指南》，诞生于 1998 年。2004 年该协会发布了第二版指南，其中进行了许多重大修改，包括对规则进行了全面的重新编号。此外，MISRA C:2012 的扩展支持和 MISRA C++:2008 用于识别 C++ 标准中的不安全代码结构也被添加到标准中。

IAR Embedded Workbench 包含一个插件产品 C-STAT，因此您可以检查应用是否符合 MISRA C:2004、MISRA C++:2008 和 MISRA C:2012 定义的规则。

测试验证

我们使用以下商业测试套件来测试我们的工具是否符合标准：

• 适于 ISO/IEC C 标准一致性的 Plum Hall 验证测试套件

• 适于测试 C++ 标准一致性的 Perennial EC++ 验证套件

• Dinkum C++ Proofer 测试我们的库是否符合 C 和 C++ 标准，并根据 C++ 标准测试我们的 STL 实现

除商业套件外，我们还使用一些内部测试套件来测试新功能、执行回归测试、纠正错误等。