Ayosher contributed to the riscv-unified-db repository by developing and refining YAML-based definitions for RISC-V ISA extensions, including the C, Zcb, Xqci, Xqccmp, and Zcmp extensions. Leveraging expertise in assembly language, embedded systems, and instruction set architecture design, Ayosher implemented new instruction encodings, enhanced interrupt handling, and improved cross-extension consistency. The work included schema updates, documentation, and maintenance fixes to ensure data reliability and portability across RV32 and RV64 architectures. By addressing both feature development and bug fixes, Ayosher established a robust, extensible foundation that supports downstream tooling and future RISC-V extension integration within the database.
January 2025 monthly summary for riscv-unified-db: Consolidated major ISA extension work with Xqci core and sub-extensions, Xqcisync, Xqccmp, and Zcmp enhancements, plus robust interrupt handling. Aligned instruction naming with the Xqci/RISC-V ISA, improved device IO and simulation hints, strengthened mutual exclusion across extensions, and implemented maintenance fixes that improve regression reliability and portability across RV32/RV64.
January 2025 monthly summary for riscv-unified-db: Consolidated major ISA extension work with Xqci core and sub-extensions, Xqcisync, Xqccmp, and Zcmp enhancements, plus robust interrupt handling. Aligned instruction naming with the Xqci/RISC-V ISA, improved device IO and simulation hints, strengthened mutual exclusion across extensions, and implemented maintenance fixes that improve regression reliability and portability across RV32/RV64.
December 2024: Delivered initial Zcb code-size reduction extension support and released the RISC-V Unified Database v0.5.0 with Xqci updates. Implemented targeted instruction corrections to enhance data quality and consistency. These efforts improve downstream tooling readiness, enable code-size optimizations, and establish a stable foundation for future RISC-V extensions.
December 2024: Delivered initial Zcb code-size reduction extension support and released the RISC-V Unified Database v0.5.0 with Xqci updates. Implemented targeted instruction corrections to enhance data quality and consistency. These efforts improve downstream tooling readiness, enable code-size optimizations, and establish a stable foundation for future RISC-V extensions.
November 2024 monthly summary: Delivered RISC-V C extension support to the riscv-unified-db repository, expanding the database with YAML-based definitions for the RISC-V C (compressed) extension, including arithmetic, logical, load/store, and control-flow instructions, along with their encodings and operational semantics. This work enhances validation, tooling compatibility, and future extensibility for the RISC-V instruction set.
November 2024 monthly summary: Delivered RISC-V C extension support to the riscv-unified-db repository, expanding the database with YAML-based definitions for the RISC-V C (compressed) extension, including arithmetic, logical, load/store, and control-flow instructions, along with their encodings and operational semantics. This work enhances validation, tooling compatibility, and future extensibility for the RISC-V instruction set.
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