Merge #176

176:  implement RFCs 147 and 155, fix #141, etc. r=japaric a=japaric

This PR:

- Implements RFC 147: "all functions must be safe"

- Implements RFC 155: "explicit Context parameter"

- Implements the pending breaking change #141: reject assign syntax in `init`
  (which was used to initialize late resources)

- Refactors code generation to make it more readable -- there are no more random
  identifiers in the output -- and align it with the book description of RTFM
  internals (see PR #175).

- Makes the framework hard depend on `core::mem::MaybeUninit` and thus will
  require nightly until that API is stabilized.

- Fixes a ceiling analysis bug where the priority of the system timer was not
  considered in the analysis (TODO backport this into the v0.4.x branch).

- Shrinks the size of all the internal queues by turning `AtomicUsize` indices
  into `AtomicU8`s.

- Removes the integration with `owned_singleton`.

closes #141
closes #147
closes #155

Additionally:

- This changes CI to push v0.5.x docs to
  https://japaric.github.io/rtfm5/book/en/ -- we need to do this because our
  official docs are hosted on https://japaric.github.io/cortex-m-rtfm and we
  need to keep them on v0.4.x until we release v0.5.0

- I propose that we use the master branch to develop the upcoming v0.5.0.

- I have created a branch v0.4.x for backports; new v0.4.x releases will come
  from that branch.

r? @korken89 @texitoi, sorry for doing all the impl work in a single commit --
I know that makes things harder to review for you.

Suggestions for compile-pass and compile-fail tests are welcome


Co-authored-by: Jorge Aparicio <jorge@japaric.io>

1 files changed, 0 insertions, 45 deletions

diff --git a/tests/cpass/unsafe.rs b/tests/cpass/unsafe.rs
deleted file mode 100644
index b6996ad..0000000
--- a/tests/cpass/unsafe.rs
+++ /dev/null
@@ -1,45 +0,0 @@
-//! Check code generation of `unsafe` `init` / `idle` / `exception` / `interrupt` / `task`
-#![no_main]
-#![no_std]
-
-extern crate lm3s6965;
-extern crate panic_halt;
-extern crate rtfm;
-
-use rtfm::app;
-
-unsafe fn foo() {}
-
-#[app(device = lm3s6965)]
-const APP: () = {
-    #[init]
-    unsafe fn init() {
-        foo();
-    }
-
-    #[idle]
-    unsafe fn idle() -> ! {
-        foo();
-
-        loop {}
-    }
-
-    #[exception]
-    unsafe fn SVCall() {
-        foo();
-    }
-
-    #[interrupt]
-    unsafe fn UART0() {
-        foo();
-    }
-
-    #[task]
-    unsafe fn bar() {
-        foo();
-    }
-
-    extern "C" {
-        fn UART1();
-    }
-};