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Commits on Feb 4, 2026

• Merge pull request #77 from HeatCrab/syscall/general-fixes

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Commits on Feb 3, 2026

• Fix POSIX syscall handling for consistency

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Commits on Jan 31, 2026

• Merge pull request #32 from HeatCrab/pmp/memory-isolation

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• Add PMP test application and documentation

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• Implement PMP fault handling with task termination

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• Implement PMP context switching for task isolation

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• Implement PMP subsystem with driver and memory abstraction

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Commits on Jan 29, 2026

• Merge pull request #72 from sysprog21/isr-safe

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• Merge pull request #75 from HeatCrab/u-mode/basic-support

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• Simplify U-mode validation test output format

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• Merge pull request #62 from HeatCrab/u-mode/basic-support

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• Implement kernel stack isolation for U-mode tasks

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• Fix ISR-safe critical sections and document APIs

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• Merge pull request #74 from sysprog21/syscall-refine

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• Fix concurrency bug and use uintptr_t for ABI

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Commits on Jan 28, 2026

• Merge pull request #70 from sysprog21/refine-task-spawn

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• Refine task_spawn with defense-in-depth security

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• Merge pull request #71 from sysprog21/ci-refine

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• CI: Refine workflows

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Commits on Jan 27, 2026

• Merge pull request #69 from HeatCrab/umode/configurable-privilege

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• Add configurable privilege mode for application entry

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Commits on Jan 25, 2026

• Merge pull request #68 from HeatCrab/fix-makefile-build-dirs

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Commits on Jan 24, 2026

• Fix build directory creation in rebuild target

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Commits on Dec 7, 2025

• Merge pull request #53 from HeatCrab/u-mode/basic-support

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Commits on Dec 4, 2025

• Merge pull request #59 from visitorckw/fix-timer-drift

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• Fix cumulative drift in periodic timers

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Commits on Dec 2, 2025

• Update HAL documentation for dual-mode support

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• Add U-mode test to functional test suite

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• Add U-mode validation test

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• Add U-mode safe output syscall

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• Fix preemptive mode task initialization

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• Add user mode task spawning interface

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• Handle user mode ecall for syscall dispatch

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• Add ecall-based syscall entry point

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• Add syscall dispatcher abstraction layer

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