riscv-software-src/riscv-unified-db
Jun 2025 – Sep 2025
3 Months active
Languages Used
DockerfileRubyC++RakeYAML
Technical Skills
Build SystemsCI/CDContainerizationBit ManipulationC++Software Testing
Henrik Gustafsson
PROFILE
Henrik Gustafsson
Henrik worked on the riscv-software-src/riscv-unified-db repository, where he developed and enhanced core infrastructure for RISC-V simulator testing and validation. He implemented a containerized build workflow using Dockerfile and YAML, enabling reproducible CI runs for ISA tests and improving build consistency. Henrik expanded simulator capabilities by adding Sv32 virtual memory and S-Mode support in C++, while also strengthening test infrastructure with comprehensive bit manipulation test suites and robust test harness integration. His work included configuration management, regression test orchestration, and systematic refactoring, resulting in improved reliability, maintainability, and early bug detection across production-like RISC-V workloads.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
4Total
Bugs
1
Commits
4
Features
3
Lines of code
44,893
Activity Months3
Your Network
135 people
Work History
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for riscv-unified-db: Key progress focused on expanding simulator capabilities and stabilizing test infrastructure. Delivered Sv32 virtual memory support and S-Mode in the RISC-V simulator, with enhanced instruction tracing and expanded regression tests to cover multiple RV extensions. This work improves correctness, performance modeling fidelity, and early bug detection in production-like workloads. Major bug fix: Corrected test configuration references by renaming mc100-32-riscv-tests.yaml to rv32-riscv-tests.yaml and updating all test tasks to use the new name, reducing CI friction and ensuring consistent test execution. Overall impact: Enhanced feature parity for the simulator (Sv32 VM and S-Mode), broader regression coverage, and more reliable CI/testing pipelines, enabling safer deployments and faster iteration. Technologies/skills demonstrated: Virtual memory management (Sv32), S-Mode integration, advanced tracing instrumentation, regression test orchestration, YAML/config maintenance, and Git-based change traceability.
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for riscv-unified-db: Key progress focused on expanding simulator capabilities and stabilizing test infrastructure. Delivered Sv32 virtual memory support and S-Mode in the RISC-V simulator, with enhanced instruction tracing and expanded regression tests to cover multiple RV extensions. This work improves correctness, performance modeling fidelity, and early bug detection in production-like workloads. Major bug fix: Corrected test configuration references by renaming mc100-32-riscv-tests.yaml to rv32-riscv-tests.yaml and updating all test tasks to use the new name, reducing CI friction and ensuring consistent test execution. Overall impact: Enhanced feature parity for the simulator (Sv32 VM and S-Mode), broader regression coverage, and more reliable CI/testing pipelines, enabling safer deployments and faster iteration. Technologies/skills demonstrated: Virtual memory management (Sv32), S-Mode integration, advanced tracing instrumentation, regression test orchestration, YAML/config maintenance, and Git-based change traceability.
September 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025Month: 2025-08 – Concise monthly summary for riscv-unified-db focused on validating core bit manipulation logic and strengthening test infrastructure. Key features delivered: - Implemented a comprehensive test suite for the udb::bits library, covering bitwise-related operations (addition, subtraction, multiplication, division, modulo, left shift, and arithmetic right shift) across multiple data types to ensure correctness and robustness of bit manipulation logic. Major bugs fixed: - Enabled robust test execution by implementing a test-harness fix that allows running riscv-tests for a defined configuration (ISS working, per (#951)), improving reproducibility and feedback for test failures. Overall impact and accomplishments: - Increased code reliability for core bit manipulation pathways, reducing risk in release readiness and providing stronger validation for critical arithmetic/bitwise paths. - Strengthened test infrastructure with cross-type coverage, enabling faster detection of edge-case issues and easier future extensions. Technologies/skills demonstrated: - Test-driven development and test suite design for low-level libraries - Cross-type, data-driven testing approaches for bit manipulation logic - Test harness integration and issue-driven debugging (RISC-V test suite integration and config-based test runs) - Clear commit-driven workflow with focused fixes and feature work
August 2025
1 Commits • 1 Features
Aug 1, 2025Month: 2025-08 – Concise monthly summary for riscv-unified-db focused on validating core bit manipulation logic and strengthening test infrastructure. Key features delivered: - Implemented a comprehensive test suite for the udb::bits library, covering bitwise-related operations (addition, subtraction, multiplication, division, modulo, left shift, and arithmetic right shift) across multiple data types to ensure correctness and robustness of bit manipulation logic. Major bugs fixed: - Enabled robust test execution by implementing a test-harness fix that allows running riscv-tests for a defined configuration (ISS working, per (#951)), improving reproducibility and feedback for test failures. Overall impact and accomplishments: - Increased code reliability for core bit manipulation pathways, reducing risk in release readiness and providing stronger validation for critical arithmetic/bitwise paths. - Strengthened test infrastructure with cross-type coverage, enabling faster detection of edge-case issues and easier future extensions. Technologies/skills demonstrated: - Test-driven development and test suite design for low-level libraries - Cross-type, data-driven testing approaches for bit manipulation logic - Test harness integration and issue-driven debugging (RISC-V test suite integration and config-based test runs) - Clear commit-driven workflow with focused fixes and feature work
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for riscv-unified-db: Delivered a containerized build workflow for RISCV ISA tests within the riscv-unified-db repository, enabling reproducible builds and safer CI runs. This work focuses on tests for hart models with the ISS (benchmarks not yet included).
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for riscv-unified-db: Delivered a containerized build workflow for RISCV ISA tests within the riscv-unified-db repository, enabling reproducible builds and safer CI runs. This work focuses on tests for hart models with the ISS (benchmarks not yet included).
June 2025
Activity
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Quality Metrics
Correctness92.6%
Maintainability90.0%
Architecture92.6%
Performance85.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++DockerfileRakeRubyYAML
Technical Skills
Bit ManipulationBuild SystemsC++CI/CDConfiguration ManagementContainerizationRISC-V ArchitectureRefactoringSimulator DevelopmentSoftware TestingSystem ProgrammingTesting and ValidationUnit TestingVirtual Memory
Repositories Contributed To
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