Device files for Renesas R9A02G021.

Highlights

• Scalar Cryptography (Zkn, Zks) Instruction Set Extensions
  The Zkn and Zks RISC-V extensions implement Scalar Cryptography instructions aimed at accelerating the NIST and ShangMi cryptographic standards, respectively. Both these standards describe algorithms for, given input data, encrypting/decrypting the input, as well as computing unique hash values from the input.

• Code Size Reduction (Zcb, Zcmp) Instruction Set Extensions
  The Zcb standard extension provides compressed variants of a number of existing extensions. When this extension is enabled, both the compiler and assembler use those instructions. The Zcmp extension is a set of instructions (including push/pop) that can be executed as a series of existing 32-bit RISC-V instructions.

• Improved code generation for the Bitmanip extensions (rotate)

• Optimized ceil, floor, and round libraries for soft-float and Zfinx

• Support for misaligned data access
  When supported by the core, the compiler can generate code to read and write packed data using large instructions, instead of performing byte-by-byte accesses.

• New compiler GCC extensions
  The following GCC extensions are now supported by the compiler:

  • the __auto_type specifier

  • the format function attribute

  • the warn_unused_result function attribute

  • structures with a flexible array member allowed as an array type

• IDE Build Actions improvements
  Build actions are a flexible design, to which you can inject and chain commands as part of the build. Build actions replace the previous pre- and post-build actions with a more intuitive mechanism, to which multiple actions can be executed before compilation and before/after linking.

• Breakpoints
  Breakpoints can now be set during application execution, even when there is no hardware support for it.