lume - A general-purpose operating system with Linux ABI compatibility

	Commit message (Collapse)	Author	Age	Files	Lines
*	refactor: promote new architecture to repository root	Richard Qin	2026-07-10	19	-1101/+0
\| \| \| \|	Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.
*	feat: implement FDT-based memory discovery and add comprehensive debug ↵	Richard Qin	2026-04-14	4	-33/+132
\| \| \| \|	logging to exec syscalls
*	Important: License changed from MIT to GPL.	Richard Qin	2026-01-05	17	-0/+85
\| \| \| \|	Rewrote the README based on the actual project.
*	feat(file-system): implement read and write FAT32 File System and basic shell	Richard Qin	2026-01-04	5	-24/+57
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*	Fix: critical malloc size calculation bug	Richard Qin	2026-01-03	2	-1/+6
\| \| \| \| \| \| \| \| \| \|	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 shell	Richard Qin	2026-01-02	2	-0/+3
\| \| \| \|	please see the log for detail.
*	dev(file-system): establish VFS and Read-only FAT32 File System	Richard Qin	2026-01-02	5	-0/+89
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*	dev(device): implement VirtIO	Richard Qin	2026-01-01	2	-0/+3
\| \| \| \|	See dev log for detail
*	dev:Refactor Memory Management and Process Management	Richard Qin	2025-12-31	11	-86/+162
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*	dev(spinlock): refactoring the implementation of locks	Richard Qin	2025-12-30	2	-15/+61
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*	dev(pmm.h): refactor header file	Richard Qin	2025-12-30	1	-4/+44
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*	feat(user): add user-space build system and init process to test fork/wait	Richard Qin	2025-12-28	1	-1/+3
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*	feat(syscall): Implement syscall dispatch and process lifecycle ↵	Richard Qin	2025-12-28	3	-2/+56
\| \| \| \|	(exit/wait/sleep)
*	feat: Implement the first user program of the lume OS	Richard Qin	2025-12-27	4	-15/+28
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*	feat: Encapsulates the low-level hardware details of the RISC-V ↵	Richard Qin	2025-12-25	1	-0/+400
\| \| \| \| \| \|	architecture, providing interfaces for the rest of the kernel to operate CPU registers and manage memory Copied from the xv-6 source code.
*	feat: add preemptive scheduling, SBI timer support and FDT parser.	Richard Qin	2025-12-13	1	-0/+7
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*	feat:Cooperative Multitasking	Richard Qin	2025-12-11	2	-0/+62
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*	feat: Add initial Supervisor Mode Trap Handler	Richard Qin	2025-12-10	1	-0/+50
\| \| \| \| \| \| \| \| \| \|	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.
*	feat: Initial PMM implementation	Richard Qin	2025-12-09	2	-0/+34
	Introduce the foundational Physical Memory Manager (PMM) and restructure the project for modularity. Implemented basic PMM and related memory management headers (mm/pmm.h, mm/vm.h). Updated Makefile and build process to support new modular structure.