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bors[bot] 35e9857dcc
Merge #88 
88: crt0.s removed redundant lines, added comments r=Lokathor a=felixjones

The flags of `cpsr_cf` are left untouched, so `cpsr_c` is used instead.

Line 102 was redundant:
```asm
bic r2, r2, #0x1F
orr r2, r2, #0x1F
```
Now it explicitly switches from incoming IRQ mode to system mode.

The same type of explicit switch is done for system mode to IRQ mode (only clearing bits necessary), however the IRQ mode bits are or'd also just-in-case the user has modified `cpsr_c` in their IRQ handler.

The IRQ disable bit is also set, again, just in-case the user changed it.

Hopefully I've managed to communicate the behaviour in the ASM comments.

Co-authored-by: Felix Jones <felix@felixjones.co.uk>
2019-09-19 02:34:12 +00:00
book Add __IRQ_HANDLER from hello_magic.rs to setup doc 2019-07-29 23:43:26 -07:00
examples Update IME to be u16 sized, avoid newtype_enum 2019-02-14 22:11:23 -07:00
examples-bak Get all the code lined up 2019-02-14 19:39:34 -07:00
src typo 2019-03-06 19:41:03 -07:00
.gitignore Revert "Deploy rust-console/gba to github.com/rust-console/gba.git:master" 2018-11-13 12:47:52 -07:00
.travis.yml bors setup 2019-02-14 21:30:51 -07:00
bors.toml no approvals! 2019-02-14 21:33:06 -07:00
Cargo.toml commit the changes 2019-02-14 19:16:09 -07:00
crt0.s crt0.s removed redundant instructions and added more asm comments 2019-09-17 23:25:51 +01:00
init.sh Fixed dead link + convenience additions 2018-12-13 14:31:11 +01:00
LICENSE-APACHE2.txt Revert "Deploy rust-console/gba to github.com/rust-console/gba.git:master" 2018-11-13 12:47:52 -07:00
linker.ld Add symbol for the end of the .bss section 2019-01-09 04:00:36 +00:00
Makefile.toml Remove dependency on gbafix 2019-06-02 13:27:35 +01:00
README.md cut this 2019-02-14 19:16:33 -07:00
rustfmt.toml Fix rustfmt to get things a little more compact 2019-02-12 10:00:16 -07:00
thumbv4-none-agb.json Add the agb env value, we might cfg on it somehow 2018-12-30 20:01:58 -07:00
todo_check.bat fixed point stuff 2018-12-18 02:05:59 -07:00

README.md

License:Apache2 travis.ci crates.io docs.rs

  • Built with cargo-make
  • Stability:None

gba

Eventually there will be a full Tutorial Book that goes along with this crate. However, currently the development focus is leaning towards having minimal coverage of all the parts of the GBA. Until that's done, unfortunately the book will be in a rather messy state.

What's Missing

The following major GBA features are still missing from the crate:

  • Affine Graphics
  • Interrupt Handling
  • Serial Communication

First Time Setup

Writing a Rust program for the GBA requires a fair amount of special setup. All of the steps are detailed for you in the Development Setup part at the start of the book.

If you've done the described global setup once before and just want to get a new project started quickly we got you covered:

curl https://raw.githubusercontent.com/rust-console/gba/master/init.sh -sSf | bash -s APP_NAME

Contribution

This crate is Apache2 licensed and any contributions you submit must also be Apache2 licensed.