If Svnapot is not implemented, skip the test.

If Svnapot is not implemented, a page fault will occur when accessing a page with napot specified.
In this case, let the test pass.

Uses appropriate addi instruction in lrsc test.

debug: use TCL-RPC to fetch results of OpenOCD commands instead of parsing log file

Quick and dirty fix for https://github.com/riscv-software-src/riscv-tests/issues/520

Support limits_icount_to_one in IcountTest

This is taking into account that the hardware limits count to 1.

Signed-off-by: liangzhen <zhen.liang@spacemit.com>

Make the non-existent csr configurable

Make CLINT address configurable

debug: Add UnavailableHaltedTest

Signed-off-by: liangzhen <zhen.liang@spacemit.com>

Signed-off-by: liangzhen <zhen.liang@spacemit.com>

Test behavior when a hart becomes unavailable while halted.

debug: Document that pexpect is needed.

Resolves #510.

Disable timer interrupt to fix some bugs

Signed-off-by: liangzhen <zhen.liang@spacemit.com>

debug: Add Openocd.set_available()

debug: Better interlock when interacting with gdb CLI.

This helper uses dmi_write commands to mark harts
available/unavailable.

debug: Make Openocd.targets() tolerate blank lines.

debug: Fix interrupt_all() to restore state.

debug: Add --hart command line option to gdbserver.py

Actually wait for the command to be echoed back. This means we won't be
confused if there are extra newlines in gdb output.

This lets you reproduce a test running on a specific hart.

debug: Re-enable unavailable tests, and fix them for github

During the github workflow this character is \n, while on my computer
it's ' '. I'm sure there's a good reason for that, but it doesn't seem
worth figuring out what that reason is.

debug: Actually run tests in github workflow.

This should avoid problems like we just had where bad tests can break
the OpenOCD workflow. These tests only run if any debug files are
changed, so should have no impact at all on non-debug tests in this
repo.

This file is copied and then slightly changed from riscv-openocd. New
changes are that cacheable steps (building spike, OpenOCD) are stored to
the cache even if running the tests fails.

debug: Only run pylint if debug files changed.

Just doing this to make a change in the debug files, which should now
cause the pylint workflow to execute.

debug: Disable unavailable tests.

They have issues when run in a github workflow.

debug: Test OpenOCD behavior when harts become unavailable, using new spike mechanism

Use new spike mechanism to test OpenOCD behavior when a hart becomes
unavailable, and then available again.