NationalSecurityAgency/ghidra
Jun 2026 – Jun 2026
1 Month active
Languages Used
No languages
Technical Skills
AARCH64 ArchitectureProcessor EmulationReverse EngineeringSleighSleigh Language
valium007
PROFILE
Valium007
Worked on the NationalSecurityAgency/ghidra repository to enhance the correctness of AArch64 support, focusing on zero-extension semantics for SIMD and floating-point reductions. Addressed a bug where upper bits of destination registers were not properly cleared during across-lane operations and scalar FMADD/FMSUB instructions, aligning behavior with ARM architecture requirements. Utilized expertise in AARCH64 architecture, processor emulation, and the Sleigh language to implement targeted fixes and improve test coverage. These changes reduced the risk of inaccurate analysis results, ensuring more reliable ARM code decompilation and downstream analysis for users working with advanced ARM workflows in reverse engineering contexts.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
0
Lines of code
30
Activity Months1
Your Network
66 peopleShared Repositories
66
MetalliCMember
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inferenceMember
Andrew StrelskyMember
Andras GemesMember
Kurt MillerMember
burninrubber0Member
Shawn HoffmanMember
brandonMember
Work History
June 2026
2 Commits
Jun 1, 2026June 2026 monthly summary: Focused on correctness in the AArch64 path for ghidra's ARM support. Delivered targeted zero-extension fixes for across-lane SIMD/FP reductions (ADDV, SMAXV, SMINV, UMAXV, UMINV) and for scalar FMADD/FMSUB constructors, ensuring upper bits of destination registers are cleared per element size as per ARM semantics. These changes align with existing zero-extension-on-write rules and reduce risk of inaccurate analysis results in ARM workflows. Business value: improved reliability and accuracy of ARM code analysis, decompiler results, and downstream analyses for users targeting AArch64 architectures. Technologies/skills demonstrated: low-level architecture knowledge, SIMD/FP semantics, zero-extension patterns, patch hygiene, commit-based changes, regression awareness.
2 Commits
Jun 1, 2026June 2026 monthly summary: Focused on correctness in the AArch64 path for ghidra's ARM support. Delivered targeted zero-extension fixes for across-lane SIMD/FP reductions (ADDV, SMAXV, SMINV, UMAXV, UMINV) and for scalar FMADD/FMSUB constructors, ensuring upper bits of destination registers are cleared per element size as per ARM semantics. These changes align with existing zero-extension-on-write rules and reduce risk of inaccurate analysis results in ARM workflows. Business value: improved reliability and accuracy of ARM code analysis, decompiler results, and downstream analyses for users targeting AArch64 architectures. Technologies/skills demonstrated: low-level architecture knowledge, SIMD/FP semantics, zero-extension patterns, patch hygiene, commit-based changes, regression awareness.
June 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance90.0%
AI Usage60.0%
Skills & Technologies
Programming Languages
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Technical Skills
AARCH64 ArchitectureProcessor EmulationReverse EngineeringSleighSleigh Language
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