lume/build/src/kernel/trap/handler.o, branch masterA general-purpose operating system with Linux ABI compatibility
https://git.richardqin.org/lume/atom?h=master2026-01-04T10:06:31Zdev(shell): implement basic shell tools2026-01-04T10:06:31ZRichard Qinrichard.qin.x@gmail.com2026-01-04T10:06:31Zurn:sha1:3886749b1c8d79d4701bf6b8e66249c4e1491648
fixed(file-system): fixed read and write bugs
feat(file-system): implement read and write FAT32 File System and basic shell2026-01-04T06:05:49ZRichard Qinrichard.qin.x@gmail.com2026-01-04T06:05:49Zurn:sha1:d3cf3f08d1343d6b265516d5a79ce2d197b59d26Fix: critical malloc size calculation bug2026-01-02T18:13:08ZRichard Qinrichard.qin.x@gmail.com2026-01-02T18:13:08Zurn:sha1:10614e04929a6d109a5e90524e446b637aaf0c13
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 shell2026-01-02T02:09:37ZRichard Qinrichard.qin.x@gmail.com2026-01-02T02:09:37Zurn:sha1:1c8e37f63d413a559825020289178d442537449e
please see the log for detail.
dev(device): implement VirtIO2026-01-01T07:04:47ZRichard Qinrichard.qin.x@gmail.com2026-01-01T07:04:47Zurn:sha1:2dde56422dcfb94affee2baffc8d240ad16ad4b2
See dev log for detail
dev: PILC implementation2025-12-31T11:00:20ZRichard Qinrichard.qin.x@gmail.com2025-12-31T11:00:20Zurn:sha1:0a6815b7143a8ffd0e09777b5fbd12098d8884c2dev:Refactor Memory Management and Process Management2025-12-31T10:00:55ZRichard Qinrichard.qin.x@gmail.com2025-12-31T10:00:55Zurn:sha1:dbba25aa24f86c1f8c3a0589c82985840adc1b6bfeat(syscall): Implement syscall dispatch and process lifecycle (exit/wait/sleep)2025-12-27T16:48:24ZRichard Qinrichard.qin.x@gmail.com2025-12-27T16:48:24Zurn:sha1:a82ab8ad6d277ededc128678aebabf5fbdb01c45feat: Implement the first user program of the lume OS2025-12-27T13:56:42ZRichard Qinrichard.qin.x@gmail.com2025-12-27T13:56:42Zurn:sha1:7ececbe2818510a8acaa2a2e513085c768b14d15feat: add preemptive scheduling, SBI timer support and FDT parser.2025-12-13T15:21:03ZRichard Qinrichard.qin.x@gmail.com2025-12-13T15:21:03Zurn:sha1:28fd88e0dd66728b22cd792deb5a1e8636f36ed3