michaelkuc6/blog_os
1
0
Fork 0
mirror of https://github.com/phil-opp/blog_os.git synced 2025-12-17 23:07:50 +00:00
Code Issues Projects Releases Wiki Activity

Improve indentation, line length, and syntax highlighting

Browse Source
This commit is contained in:
Philipp Oppermann
2016-04-25 21:57:56 +02:00
parent 7b2bdf5c3c
commit 7b2d40d3f0
7 changed files with 103 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
blog/post/2015-11-15-allocating-frames.md
View File

@@ -68,11 +68,13 @@ To print all available memory areas, we can use the `multiboot2` crate in our `r
```rust
let boot_info = unsafe{ multiboot2::load(multiboot_information_address) };
let memory_map_tag = boot_info.memory_map_tag().expect("Memory map tag required");
let memory_map_tag = boot_info.memory_map_tag()
.expect("Memory map tag required");
println!("memory areas:");
for area in memory_map_tag.memory_areas() {
println!(" start: 0x{:x}, length: 0x{:x}", area.base_addr, area.length);
println!(" start: 0x{:x}, length: 0x{:x}",
area.base_addr, area.length);
}
```
The `load` function is `unsafe` because it relies on a valid address. Since the memory tag is not required by the Multiboot specification, the `memory_map_tag()` function returns an `Option`. The `memory_areas()` function returns the desired memory area iterator.
@@ -397,7 +399,7 @@ The [next post] will be about paging again. We will use the frame allocator to c
[next post]: {{% relref "2015-12-09-modifying-page-tables.md" %}}
## Recommended Posts
Eric Kidd started the [Bare Metal Rust] series last week. Like this post, it builds upon the code from [Printing to Screen], but tries to support keyboard input instead of wrestling through memory management details ;).
Eric Kidd started the [Bare Metal Rust] series last week. Like this post, it builds upon the code from [Printing to Screen], but tries to support keyboard input instead of wrestling through memory management details.
[Bare Metal Rust]: http://www.randomhacks.net/bare-metal-rust/
[Printing to Screen]: {{% relref "2015-10-23-printing-to-screen.md" %}}