[riscv] refactor functions that register read/write via progbuf #599

	on: pull_request

	name: Linux Build

	jobs:
	# 32-bit, clang
	build32:
	runs-on: ubuntu-20.04
	env:
	CFLAGS: -m32
	CC: clang
	steps:
	- name: Checkout Code
	uses: actions/checkout@v2
	- name: Install required packages (apt-get)
	run: \|
	sudo apt-get update
	sudo apt-get install clang gcc-multilib
	- run: ./bootstrap
	- run: ./configure --enable-remote-bitbang --enable-jtag_vpi --disable-target64
	- run: make -j`nproc`
	- run: file src/openocd \| grep 32-bit
	- run: src/openocd --version

	# 64-bit, gcc
	build64:
	runs-on: ubuntu-latest
	env:
	CFLAGS: -m64
	CC: gcc
	steps:
	- name: Checkout Code
	uses: actions/checkout@v3
	- name: Configure environment
	run: \|
	TAG=$(git rev-parse --short HEAD)
	echo "TAG=$TAG" >> $GITHUB_OUTPUT
	echo "NAME=openocd64-$TAG" >> $GITHUB_ENV
	- name: Install required packages (apt-get)
	run: \|
	sudo apt-get update
	sudo apt-get install libusb-1.0-0 libusb-1.0-0-dev
	- run: ./bootstrap
	- run: ./configure --enable-remote-bitbang --enable-jtag_vpi --enable-ftdi-cjtag --prefix /tmp/${{ env.NAME }}
	- run: make -j`nproc`
	- name: Check that we built something
	run: \|
	file src/openocd \| grep 64-bit
	src/openocd --version
	- name: Package
	# Package into tgz so that github stores a compressed artifact, even
	# though it zips that artifact again before it sends it back to be
	# downloaded.
	run: \|
	make install
	tar zcvf ${{ env.NAME }}.tgz -C /tmp ${{ env.NAME }}
	- name: Upload Artifact
	uses: actions/upload-artifact@v3
	with:
	name: ${{ env.NAME }}
	path: ${{ env.NAME }}.tgz

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