7d932d43b3
- Add a Pandoc defaults file - Add a Pandoc template based on the default one - Add chapter headers to each section ### Usage To use, install Pandoc and ConTeXt, then simply run `pandoc -d ./pandoc.yaml` from the repo root. ### Maintenance When new chapters get added, the `pandoc.yaml` will need to be updated to include each new chapter's markdown file(s). ### Miscellaneous Notes - The PDF generated complies with PDF/A 1b:2005 by default. - The PDF also contains the source markdown files as attachments - All links are fully functional! - Includes a table of contents! With links to each section! ### Conclusion Enjoy! |
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| cpu | ||
| drivers | ||
| kernel | ||
| libc | ||
| boot | ||
| Makefile | ||
| README.md | ||
malloc
Concepts you may want to Google beforehand: malloc
Goal: Implement a memory allocator
We will add a kernel memory allocator to libc/mem.c. It is
implemented as a simple pointer to free memory, which keeps
growing.
The kmalloc() function can be used to request an aligned page,
and it will also return the real, physical address, for later use.
We'll change the kernel.c leaving all the "shell" code there,
Let's just try out the new kmalloc(), and check out that
our first page starts at 0x10000 (as hardcoded on mem.c) and
subsequent kmalloc()'s produce a new address which is
aligned 4096 bytes or 0x1000 from the previous one.
Note that we added a new strings.c:hex_to_ascii() for
nicer printing of hex numbers.
Another cosmetic modification is to rename types.c to
type.c for language consistency.
The rest of the files are unchanged from last lesson.