Initial Cortex-A AArch64 support. #149

	name: File header

	on:
	pull_request:
	branches: [ develop ]
	paths:
	- 'CMSIS/Core/**'
	- 'CMSIS/Core_A/**'
	- 'CMSIS/RTOS2/Include/**'
	- 'CMSIS/RTOS2/Source/**'
	- 'Device/**'

	permissions:
	contents: read
	pull-requests: write

	jobs:
	check:
	name: Check file header
	runs-on: ubuntu-latest
	steps:
	- name: Calculate depth
	id: depth
	run: \|
	echo ::set-output name=GIT_COMMITS::$((${{ github.event.pull_request.commits }} + 1))
	- name: Checkout repository
	uses: actions/checkout@v2
	with:
	ref: ${{ github.event.pull_request.head.sha }}
	fetch-depth: ${{ steps.depth.outputs.GIT_COMMITS }}
	- id: files
	uses: jitterbit/get-changed-files@v1
	- name: Check changed files
	run: \|
	echo "GIT_COMMITS=${{ steps.depth.outputs.GIT_COMMITS }}"
	echo "::add-matcher::.github/fileheader.json"
	RC=0
	for changed_file in ${{ steps.files.outputs.added_modified }}; do
	./CMSIS/Utilities/check_header.sh -v -b HEAD~${{ github.event.pull_request.commits }} ${changed_file} \|\| RC=1
	done
	echo "::remove-matcher owner=fileheader::"
	exit $RC

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