Merge pull request riscv-collab#1132 from en-sc/en-sc/from_upstream

Merge up to fd7b66c from upstream

Document how to get code coverage. (riscv-collab#339)

* Document how to get code coverage.

Change-Id: If7eae6008ad0394490885f88b6edb8436d9f54f3

* Remove (hopefully insignificant) whitespace.

Change-Id: Ie4079dd2998c616ae5b6e5b031e29cea5f11d9f8

Clean up fespi flashing code (riscv-collab#313)

* WIP upstream review feedback.

See http://openocd.zylin.com/#/c/4656/

The main change is to get rid of macros that contain a return statement.

Change-Id: Iff79a8aa7c40ee04a8d1f07d973f9b29d4899d5c

* Remove unaligned head/tail code.

From inspection it's not clear to me that this is necessary at all. I've
been unable to make a test case that results in anything besides a
4-byte aligned flash to happen. Sections that aren't multiples of 4 are
common, and appear to work fine.

Change-Id: Idb6109ca015ae06b9d8f16bd883f9c8f5c51087d

* Move fespi native code into contrib/loaders

As suggested by http://openocd.zylin.com/#/c/4656/

Change-Id: I275012aa8a1ef6a0e8a2ec8ebe8643d87de24407

* Reenable hw mode if errors happen without it.

Change-Id: I1220033c13d02e8a441992bd6daa0ec3b5acbfca

* Default flash to not protected.

Requested by upstream review.

Change-Id: I61753bd9909d7f21ef6624037a865072c18bd1d8

Moved comment and added initial buffer clearing

June 29th OpenOCD Release

This release mostly contains bug fixes and reflects updates to the debug
specification as it proceeds through ratification.

December 31st OpenOCD Release

It's been quite a while since the last tagged RISC-V OpenOCD release, so
there have been many changes.  These include:

* Bugfixes throughout the tree.
* Support for systems with two word program buffers
* Support for GDB XML register list passing

August 18th OpenOCD Release

This release mostly consists of bug fixes:

* Error checking when reading CSRs.
* s0 is no longer trashed when examining 32-bit harts.
* Some trigger fixes.
* The build is fixed on some Windows platforms.
* Reads no longer access an extra word.

June 21st 2017 OpenOCD Release

We've made a handful of changes since the last release:

 * We are based on a more recent OpenOCD master.
 * 64-bit physical addresses are supported.
 * One GDB instance per hart is supported again.

While it hasn't been long since the last release, these changes are pretty
significant so I thought it'd be best to do an intermediate release here.

June 12th 2017 OpenOCD Release

Since we're versioning the RISC-V toolchain, I thought it would be good to
version OpenOCD as well.  This is a day late, but nothing has changed for a
bit.

June 8th 2017 OpenOCD Release

Since we're versioning the RISC-V toolchain, I thought it would be good to
version OpenOCD as well.  This is a day late, but nothing has changed for a
bit.