zig build qemu -Dgdb=true
gdb/gdb.sh
Ext2 FS:
- GOAL:
treeall test disk images -- Add support for outputting to something formattable? "{}", .{inode} -- Nested folders, -- Improve the iterator -- Reading file data - API? (How do I read X amount of data)
Cleanup
-
Prekernel: Load kernel elf, enable MMU, jump to kernel main
-
Move StackFrame and hardware dependent context switching into aarch ELF loading
-
Can we use a linker symbol as a proxy for kernel elf size?
Need a panic fn
https://dwarfstd.org/doc/Debugging%20using%20DWARF-2012.pdf
https://eli.thegreenplace.net/2011/02/07/how-debuggers-work-part-3-debugging-information
Move StackFrame and hardware dependent context switching into aarch Single threaded spinlock
- Build an auto-release mechanism?
- Detect context switch when spinlock held (panic)
- Recursive spinlock? (Counter?)
- Save, Disable + Restore interrupts
Proper init of the Kernel Allocator How is the Kernel Allocator used? Globally accessible? USE A BIG KERNEL LOCK!
Page Frame Allocator
- Needs its own memory
- Gives pages to things
- Doesn't know anything about kernel allocator (things above it)
Single threaded spinlock
- Build an auto-release mechanism?
- Detect context switch when spinlock held (panic)
- Recursive spinlock? (Counter?)
- Save, Disable + Restore interrupts
Bootstrap Kernel Allocator
- Relies on the Page Frame Allocator for its memory
- Build initial kernel page tables -- As an address space that we can map ranges of memory into and build ---- Kernel vs Arch tables -- How do we bootstrap the memory for this? [Special process for VM bootstrap?]
Build some better register access code? More readable? Safer?