add CI

Author: japaric

.gitignore

@@ -2,3 +2,5 @@
 .#*
 /target
 Cargo.lock
+bin/*.after
+bin/*.before

.travis.yml

@@ -0,0 +1,69 @@
+language: rust
+
+matrix:
+  include:
+    - env: TARGET=x86_64-unknown-linux-gnu
+      rust: 1.31
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armv7r-none-eabi
+      rust: 1.31
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armv7r-none-eabihf
+      rust: 1.31
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armebv7r-none-eabi
+      rust: 1.31
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armebv7r-none-eabihf
+      rust: 1.31
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=x86_64-unknown-linux-gnu
+      rust: nightly
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armv7r-none-eabi
+      rust: nightly
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armv7r-none-eabihf
+      rust: nightly
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armebv7r-none-eabi
+      rust: nightly
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+    - env: TARGET=armebv7r-none-eabihf
+      rust: nightly
+      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
+
+before_install: set -e
+
+install:
+  - bash ci/install.sh
+  - export PATH="$PATH:$PWD/gcc/bin"
+
+script:
+  - bash ci/script.sh
+
+after_script: set +e
+
+cache: cargo
+
+before_cache:
+  - chmod -R a+r $HOME/.cargo;
+
+branches:
+  only:
+    - master
+    - staging
+    - trying
+
+notifications:
+  email:
+    on_success: never

check-blobs.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Checks that the blobs are up to date with the committed assembly files
+
+set -euxo pipefail
+
+for lib in $(ls bin/*.a); do
+    filename=$(basename $lib)
+    arm-none-eabi-objdump -Cd $lib > bin/${filename%.a}.before
+done
+
+./assemble.sh
+
+for lib in $(ls bin/*.a); do
+    filename=$(basename $lib)
+    arm-none-eabi-objdump -Cd $lib > bin/${filename%.a}.after
+done
+
+for cksum in $(ls bin/*.after); do
+    diff -u $cksum ${cksum%.after}.before
+done

ci/install.sh

@@ -0,0 +1,15 @@
+set -euxo pipefail
+
+main() {
+    case $TARGET in
+        arm*v7r-none-eabi*)
+            rustup target add $TARGET
+            ;;
+        *)
+            mkdir gcc
+            curl -L https://developer.arm.com/-/media/Files/downloads/gnu-rm/7-2018q2/gcc-arm-none-eabi-7-2018-q2-update-linux.tar.bz2?revision=bc2c96c0-14b5-4bb4-9f18-bceb4050fee7?product=GNU%20Arm%20Embedded%20Toolchain,64-bit,,Linux,7-2018-q2-update | tar --strip-components=1 -C gcc -xj
+            ;;
+    esac
+}
+
+main

ci/script.sh

@@ -0,0 +1,22 @@
+set -euxo pipefail
+
+main() {
+    cargo check --target $TARGET
+
+    if [ $TRAVIS_RUST_VERSION = nightly ]; then
+        cargo check --target $TARGET --features inline-asm
+    fi
+
+    case $TARGET in
+        arm*v7r-none-eabi*)
+            ;;
+
+        *)
+            cargo test --target $TARGET
+
+            ./check-blobs.sh
+            ;;
+    esac
+}
+
+main