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* feat(file-system): implement read and write FAT32 File System and basic shellRichard Qin2026-01-041-1/+2
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* Fix: critical malloc size calculation bugRichard Qin2026-01-031-7/+11
| | | | | | | | | | Summary: - Fixed an integer arithmetic error in malloc() where 'nunits' was initialized to 0, causing incorrect heap sizing. - This bug caused malloc to return pointers pointing to unmapped memory pages, leading to Store Page Fault (scause 15) at process boundaries. - Switched memory allocator logic to use byte-based size calculation instead of K&R style units to prevent off-by-one errors. Improvements: - Shell now starts successfully without segfaults.
* dev(sell): add simple libc and implement shellRichard Qin2026-01-021-0/+6
| | | | please see the log for detail.
* dev(device): implement VirtIORichard Qin2026-01-011-4/+9
| | | | See dev log for detail
* dev: PILC implementationRichard Qin2025-12-311-0/+17
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* dev:Refactor Memory Management and Process ManagementRichard Qin2025-12-311-123/+119
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* feat(syscall): Implement syscall dispatch and process lifecycle ↵Richard Qin2025-12-281-17/+18
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* feat: Implement the first user program of the lume OSRichard Qin2025-12-271-0/+50
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* feat: add preemptive scheduling, SBI timer support and FDT parser.Richard Qin2025-12-131-2/+1
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* feat:Cooperative MultitaskingRichard Qin2025-12-111-1/+5
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* feat: Add initial Supervisor Mode Trap HandlerRichard Qin2025-12-101-0/+123
Implement the initial mechanism for handling traps and exceptions in Supervisor Mode. Set up the stvec Control and Status Register (CSR) to direct all S-Mode Traps (Interrupts and Exceptions) to a unified assembly entry point. Implemented assembly code for saving and restoring the Trap Context (register state). Provides the foundational framework necessary for future Timer Interrupts and System Calls.
generated by cgit v1.2.3 (git 2.46.0) at 2026-10-29 18:36:04 +0000