wkern.git/kernel/mem.c, branch mastera UNIX-like RISC-V kernel written from scratch
https://git.itsnat.dev/wkern.git/atom?h=master2026-07-12T17:45:05Zcreate elf.h2026-07-12T17:45:05ZNathan Leeme@nwlee.tech2026-07-12T17:42:31Zurn:sha1:24fdac29fb8a1c7766869b05e7a17b2c4cc98ce1
The ELF parser needs more work, there are more structs to be added.
memcpy was refactored from mem.h into common.h
endianness conversions were standardized in types.h
create kzalloc2026-06-25T15:08:12ZNathanme@nwlee.tech2026-06-25T15:08:12Zurn:sha1:5d9942d70ca61af4d12cd2a531a190c98052c9c4fix memory allocator logic2026-06-25T15:03:22ZNathanme@nwlee.tech2026-06-25T15:03:22Zurn:sha1:27a91e1d9d6d312c519429965b201dd294065085
- fixed an edge case in `kmalloc` where the broken block from a split
may be too small to accomodate another `struct page`. this was fixed
such that if we do not have enough room to allocate another `struct
page` then `kmalloc` simply returns the entire page.
- fixed empty and single-element `free_list` edge cases in `kfree`
update kmalloc2026-06-25T04:06:44ZNathan Leeme@nwlee.tech2026-06-25T04:06:44Zurn:sha1:746212c43067836488b77b146c01852eafe07b14create kmalloc and km_init2026-06-24T17:55:38ZNathan Leeme@nwlee.tech2026-06-24T17:55:38Zurn:sha1:95e5618b0e4cf354c80d75b00b60539b5ed47150create dtb allocator2026-06-20T00:05:01ZNathan Leeme@nwlee.tech2026-06-20T00:05:01Zurn:sha1:5c15e93fa87800b1f8fae7ef688a9d41221526f1
the parent commit (b106df2447d23d6b3fcffa7cc87edde218d054f3) discussed
the possibility of creating dtb device discovery. for that, we have
replaced wdt device discovery with dtb device discovery. in the future,
we will use the pci kernel module to use device discovery via a PCI
controller
create wdt device discovery2026-06-17T18:05:15ZNathan Leeme@nwlee.tech2026-06-17T18:05:15Zurn:sha1:b106df2447d23d6b3fcffa7cc87edde218d054f3
discuss: per wrv32em status, consider moving custom wdt format to dtb or
pci device discovery (potentially both: we have the framework for pci.ko
extension after using dtb to discover memory and pci devices)