riscv-software-src/riscv-unified-db
Jun 2025 – Mar 2026
7 Months active
Languages Used
DockerfileRubyC++RakeYAMLShellJSONMakefile
Technical Skills
Build SystemsCI/CDContainerizationBit ManipulationC++Software Testing
Henrik Gustafsson
PROFILE
Henrik Gustafsson
Henrik G. developed core infrastructure and testing features for the riscv-software-src/riscv-unified-db repository, focusing on RISC-V simulator enhancements, test automation, and debugging workflows. He implemented containerized build systems, expanded simulator support for Sv32 virtual memory and S-Mode, and introduced JSON-driven memory mapping. Using C++, Shell, and YAML, Henrik built comprehensive test suites for bit manipulation and regression, improved CI/CD reliability, and integrated GDB server support with VSCode debugging. His work addressed environment-specific bugs, streamlined configuration management, and ensured compatibility with evolving RISC-V test suites, demonstrating depth in system programming, DevOps, and embedded systems engineering across multiple release cycles.
Overall Statistics
Feature vs Bugs
70%Features
Repository Contributions
10Total
Bugs
3
Commits
10
Features
7
Lines of code
48,092
Activity Months7
Your Network
212 peopleSame Organization
@qti.qualcomm.com172
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026: Implemented robust RISC-V debugging enhancements in riscv-unified-db, enabling GDB Server support for ISS, VSCode integration, and standalone GDB debugging for RV64. These changes streamline debugging workflows, improve IDE visibility into registers and memory, and lay groundwork for broader toolchain integration, delivering measurable business value in faster issue resolution and developer productivity.
1 Commits • 1 Features
Mar 1, 2026March 2026: Implemented robust RISC-V debugging enhancements in riscv-unified-db, enabling GDB Server support for ISS, VSCode integration, and standalone GDB debugging for RV64. These changes streamline debugging workflows, improve IDE visibility into registers and memory, and lay groundwork for broader toolchain integration, delivering measurable business value in faster issue resolution and developer productivity.
March 2026
January 2026
3 Commits • 2 Features
Jan 1, 2026Month: 2026-01 | Repository: riscv-software-src/riscv-unified-db. This monthly summary highlights features delivered, critical fixes, and overall impact on reliability and business value, based on the January 2026 work.
January 2026
3 Commits • 2 Features
Jan 1, 2026Month: 2026-01 | Repository: riscv-software-src/riscv-unified-db. This monthly summary highlights features delivered, critical fixes, and overall impact on reliability and business value, based on the January 2026 work.
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary: Addressed a critical environment-specific bug in riscv-unified-db that blocked Gemfile discovery when the repository resided under the user's home directory. Implemented a robust fix by explicitly setting GEM_HOME and GEM_PATH to ensure Ruby gem resolution works consistently across home-directory layouts, improving local development and CI reliability.
1 Commits
Dec 1, 2025December 2025 monthly summary: Addressed a critical environment-specific bug in riscv-unified-db that blocked Gemfile discovery when the repository resided under the user's home directory. Implemented a robust fix by explicitly setting GEM_HOME and GEM_PATH to ensure Ruby gem resolution works consistently across home-directory layouts, improving local development and CI reliability.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for riscv-unified-db: Delivered RV64 RISC-V ISS Test Suite and complete regression integration, expanding RISCV-ISS capabilities and test coverage. Implemented RV64 tests, updated configuration to build/test RV64, corrected 64-bit instruction implementations, strengthened the page walker and address translation, and wired RV64 tests into the regression framework for end-to-end validation. This work increases RV64 coverage, reduces regression risk, and accelerates release readiness.
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for riscv-unified-db: Delivered RV64 RISC-V ISS Test Suite and complete regression integration, expanding RISCV-ISS capabilities and test coverage. Implemented RV64 tests, updated configuration to build/test RV64, corrected 64-bit instruction implementations, strengthened the page walker and address translation, and wired RV64 tests into the regression framework for end-to-end validation. This work increases RV64 coverage, reduces regression risk, and accelerates release readiness.
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
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Quality Metrics
Correctness91.0%
Maintainability86.0%
Architecture87.0%
Performance84.0%
AI Usage26.0%
Skills & Technologies
Programming Languages
C++DockerfileJSONMakefileRakeRubyShellYAML
Technical Skills
Bit ManipulationBuild SystemsC++C++ developmentCI/CDCommand line interface (CLI)Configuration ManagementContainerizationDevOpsEnvironment ConfigurationGDB integrationJSON handlingRISC-V ArchitectureRISC-V architectureRefactoring
Repositories Contributed To
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