sys: Refactor GDT initialization, enhance syscall handling, and improve user mode entry

Browse Source

Finally we got usermode working again, It took awhile but we got it done. A few things we did in this commit:

- Simplified GDT entry initialization in gdt.c for kernel and user segments.
- Fixed TSS structure for task switching.
- Implemented cr2 handling in a page fault.
- Enhanced user stack setup in usermode.c to return the correct RSP.
- Improved syscall implementation in syscall.c, including new syscall numbers.
- Updated syscall entry to correctly handle context switching and argument passing.
- Refactored init.c to demonstrate file operations using syscalls.
- Added new syscalls for file operations in syscalls.h.
- Modified VFS to handle leading slashes in paths correctly.

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

...

This commit is contained in:

kaguya

2026-04-26 02:06:28 -04:00

parent 3b6e68bc16

commit e6e8b1209b

19 changed files with 263 additions and 266 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

user/build/crt0.o

BIN

Binary file not shown.

user/build/init.elf

BIN

Binary file not shown.

user/build/init.o

BIN

Binary file not shown.