riscv-tests.git
5 years agoMake DownloadTest properly park other harts.
Tim Newsome [Mon, 14 May 2018 22:14:47 +0000 (15:14 -0700)]
Make DownloadTest properly park other harts.

5 years ago[rv64ua/lrsc] Initialize memory read out. (#135)
Christopher Celio [Tue, 1 May 2018 00:03:50 +0000 (17:03 -0700)]
[rv64ua/lrsc] Initialize memory read out. (#135)

* [rv64ua/lrsc] Initialize memory read out.

Even though the load contents are discarded, this un-initialized memory value
can lead to a divergence for co-simulation between two different RISC-V designs.

* [rv64ua/lrsc] Use .skip instead of .align.

5 years agoFix formatting to make pylint happy.
Tim Newsome [Mon, 30 Apr 2018 19:54:03 +0000 (12:54 -0700)]
Fix formatting to make pylint happy.

6 years agoMerge pull request #132 from riscv/debug-clear-satp
Megan Wachs [Sun, 29 Apr 2018 03:38:37 +0000 (20:38 -0700)]
Merge pull request #132 from riscv/debug-clear-satp

debug: need to clear satp before changing priv

6 years agodebug: need to clear satp before changing priv
Megan Wachs [Fri, 27 Apr 2018 23:52:43 +0000 (16:52 -0700)]
debug: need to clear satp before changing priv

ISA Manual does not require this register to be reset, and attempting to execute code with VM on when VM hasn't been set up is going to just lead to sadness.

6 years agoMerge pull request #125 from riscv/debug-delete-sim
Megan Wachs [Fri, 27 Apr 2018 22:18:57 +0000 (15:18 -0700)]
Merge pull request #125 from riscv/debug-delete-sim

Delete E300Sim.py

6 years agoMerge pull request #130 from riscv/trap_entry_align-1
Megan Wachs [Fri, 27 Apr 2018 22:18:44 +0000 (15:18 -0700)]
Merge pull request #130 from riscv/trap_entry_align-1

debug: add missing align directive on trap_entry

6 years agodebug: add missing align directive on trap_entry
Megan Wachs [Fri, 27 Apr 2018 21:42:34 +0000 (14:42 -0700)]
debug: add missing align directive on trap_entry

6 years agoFix race when making logs directory
Tim Newsome [Tue, 24 Apr 2018 18:21:27 +0000 (11:21 -0700)]
Fix race when making logs directory

6 years agoDelete E300Sim.py
Megan Wachs [Thu, 19 Apr 2018 17:46:23 +0000 (10:46 -0700)]
Delete E300Sim.py

This file is wrong (the .cfg file isn't right) and not used by anything.

6 years agoMerge pull request #123 from riscv/gdb_timeout
Tim Newsome [Mon, 16 Apr 2018 19:14:13 +0000 (12:14 -0700)]
Merge pull request #123 from riscv/gdb_timeout

Compute gdb command timeout based on ops estimate

6 years agoCompute gdb command timeout based on ops estimate
Tim Newsome [Mon, 9 Apr 2018 20:09:55 +0000 (13:09 -0700)]
Compute gdb command timeout based on ops estimate

The caller of gdb.command() should estimate how much work gdb needs to
do, and testlib then scales this up proportional to the general gdb
timeout we configured. This hopefully allows us to configure a tighter
timeout, so we don't have to have a multi-hour timeout just for
something that takes long like `load` on a really slow simulator.

Hopefully this addresses #122.

6 years agoFix #120: Instructions 'sll' are replaced with 'slli' in rv64ui/slli.S (#121)
Andrei Tatarnikov [Mon, 9 Apr 2018 18:24:04 +0000 (21:24 +0300)]
Fix #120: Instructions 'sll' are replaced with 'slli' in rv64ui/slli.S (#121)

6 years agoUse `gdb_report_register_access_error enable`
Tim Newsome [Mon, 2 Apr 2018 21:56:45 +0000 (14:56 -0700)]
Use `gdb_report_register_access_error enable`

6 years agoTest debug authentication.
Tim Newsome [Tue, 27 Feb 2018 22:28:26 +0000 (14:28 -0800)]
Test debug authentication.

Also halt instead of reset spike targets, which tests a more complicated
code path.

6 years agoPrint log filename at the end of the log.
Tim Newsome [Fri, 23 Mar 2018 20:27:52 +0000 (13:27 -0700)]
Print log filename at the end of the log.

This makes it much easier to look at a log if you see a failure
scrolling by on your terminal.

6 years agoMake misa.C test conform to Hauser proposal
Andrew Waterman [Wed, 21 Mar 2018 23:54:08 +0000 (16:54 -0700)]
Make misa.C test conform to Hauser proposal

See https://github.com/riscv/riscv-isa-manual/commit/0472bcdd166f45712492829a250e228bb45fa5e7

6 years agoMerge pull request #119 from rishikhan/master
Palmer Dabbelt [Wed, 21 Mar 2018 01:14:18 +0000 (18:14 -0700)]
Merge pull request #119 from rishikhan/master

Update Makefile to allow for RISCV_PREFIX to be set by the configure

6 years agoUpdate Makefile to allow for RISCV_PREFIX to be set by the configure --target
rishi [Mon, 19 Mar 2018 16:02:53 +0000 (12:02 -0400)]
Update Makefile to allow for RISCV_PREFIX to be set by the configure --target

6 years agoTest debugging with/without a program buffer
Tim Newsome [Mon, 19 Feb 2018 21:31:40 +0000 (13:31 -0800)]
Test debugging with/without a program buffer

6 years agoEnsure an error when reading a non-existent CSR.
Tim Newsome [Thu, 1 Mar 2018 23:05:45 +0000 (15:05 -0800)]
Ensure an error when reading a non-existent CSR.

6 years agoAdd test for clearing misa.C while PC is misaligned (#117)
Andrew Waterman [Tue, 27 Feb 2018 07:25:34 +0000 (01:25 -0600)]
Add test for clearing misa.C while PC is misaligned (#117)

See https://github.com/riscv/riscv-isa-manual/pull/139

6 years agoTest resuming from a trigger.
Tim Newsome [Fri, 9 Feb 2018 16:54:59 +0000 (08:54 -0800)]
Test resuming from a trigger.

6 years agoLink scripts shouldn't be executable.
Tim Newsome [Wed, 7 Feb 2018 21:48:54 +0000 (13:48 -0800)]
Link scripts shouldn't be executable.

6 years agoDeal with gdb reporting pmpcfg0 not existing.
Tim Newsome [Mon, 8 Jan 2018 20:36:49 +0000 (12:36 -0800)]
Deal with gdb reporting pmpcfg0 not existing.

It's an optional register.

6 years agoAdd test for multicore failure
Tim Newsome [Fri, 5 Jan 2018 22:25:57 +0000 (14:25 -0800)]
Add test for multicore failure

Specifically, make sure that after resuming all cores, and halting core
0, that OpenOCD's poll() doesn't mess up the currently selected hart to
the point where memory accesses intended for core 0 go to core 1.

6 years agoTest access exception behavior for illegal addresses (#111)
Andrew Waterman [Wed, 3 Jan 2018 05:13:38 +0000 (21:13 -0800)]
Test access exception behavior for illegal addresses (#111)

OK'd by @palmer-dabbelt

6 years agoTest FPRs that aren't XLEN in size.
Tim Newsome [Wed, 27 Dec 2017 23:41:45 +0000 (15:41 -0800)]
Test FPRs that aren't XLEN in size.

Cover all combinations of 32,64 bit XLEN with F and FD extensions.

Finishes Issue https://github.com/riscv/riscv-openocd/issues/110

6 years agoAdd all-tests target.
Tim Newsome [Fri, 22 Dec 2017 00:00:01 +0000 (16:00 -0800)]
Add all-tests target.

I hope to use this in riscv-tools' regression.sh.

6 years agoMerge pull request #110 from riscv/bump_env
Megan Wachs [Thu, 21 Dec 2017 23:35:15 +0000 (15:35 -0800)]
Merge pull request #110 from riscv/bump_env

tests: bump env to pick up new names for CSRs

6 years agotests: bump env to pick up new names for CSRs
Megan Wachs [Thu, 21 Dec 2017 23:23:38 +0000 (15:23 -0800)]
tests: bump env to pick up new names for CSRs

6 years agoRemove `set arch riscv:rv%d`
Tim Newsome [Wed, 20 Dec 2017 23:00:01 +0000 (15:00 -0800)]
Remove `set arch riscv:rv%d`

gdb gets target XLEN from register width now, so this is taken care of
automatically.

6 years agoVerify that F18 does not exist on FPU-less targets
Tim Newsome [Wed, 20 Dec 2017 20:17:05 +0000 (12:17 -0800)]
Verify that F18 does not exist on FPU-less targets

6 years agoDisplay env variables used when invoking OpenOCD
Tim Newsome [Tue, 12 Dec 2017 16:02:38 +0000 (08:02 -0800)]
Display env variables used when invoking OpenOCD

This makes it a little easier to just cut and paste from the log when
reproducing a failure. (The port number still needs changing though.)

6 years agoEnsure there are no unnamed registers.
Tim Newsome [Fri, 1 Dec 2017 22:29:11 +0000 (14:29 -0800)]
Ensure there are no unnamed registers.

6 years agoMerge pull request #109 from riscv/vcssim
Tim Newsome [Thu, 30 Nov 2017 20:24:32 +0000 (12:24 -0800)]
Merge pull request #109 from riscv/vcssim

Clean up VcsSim init()

6 years agoClean up VcsSim init()
Tim Newsome [Thu, 30 Nov 2017 19:50:18 +0000 (11:50 -0800)]
Clean up VcsSim init()

Use a unique log file, so you can run multiple instances at once.
Add time out to waiting for the simulator to be ready.

6 years agoRename sbadaddr to satp
Andrew Waterman [Mon, 27 Nov 2017 22:37:58 +0000 (14:37 -0800)]
Rename sbadaddr to satp

6 years agoRv32ud tests (#108)
Torbjørn [Mon, 27 Nov 2017 05:56:53 +0000 (06:56 +0100)]
Rv32ud tests (#108)

* Probably implemented the changes required to support fadd test for rv32ud

* Created test files in rv32ud, implemented working(?) test for ldst

* fclass, fcvt_w, fmin and recoding seem to be working now

* Got fdiv (and sqrt) tests working

* fmadd tests seem to work

* fcmp works

* [WIP] fcvt working, but lacks a 32-bit implementation of the final test

* Renamed macro TEST_LDST_D32 to TEST_CASE_D32 to indicate that it can be used for more than just LDST

* Added Makefrag for rv32ud tests and included in main isa Makefile

* Don't run 64-bit tests if the defined XLEN is 32

6 years agoCheck sepc for rv64si/scall test. (#107)
Christopher Celio [Wed, 22 Nov 2017 22:01:26 +0000 (14:01 -0800)]
Check sepc for rv64si/scall test. (#107)

Closes #105.

6 years agoCheck mtval in rv64mi-p-illegal (#104)
Andrew Waterman [Mon, 20 Nov 2017 19:59:28 +0000 (11:59 -0800)]
Check mtval in rv64mi-p-illegal (#104)

Closes #103

6 years agoEnsure log file is fully written before reading it
Tim Newsome [Mon, 20 Nov 2017 04:54:33 +0000 (20:54 -0800)]
Ensure log file is fully written before reading it

Fixes --print-failures sometimes not actually printing out details about
failures.

6 years agoMake pylint happy.
Tim Newsome [Mon, 20 Nov 2017 04:54:14 +0000 (20:54 -0800)]
Make pylint happy.

6 years agoMerge pull request #102 from riscv/xlen_fix
Megan Wachs [Fri, 17 Nov 2017 21:43:33 +0000 (13:43 -0800)]
Merge pull request #102 from riscv/xlen_fix

debug: Fix the XLEN command line check

6 years agodebug: Fix the XLEN command line check
Megan Wachs [Fri, 17 Nov 2017 19:27:04 +0000 (11:27 -0800)]
debug: Fix the XLEN command line check

6 years agoDebug: Use the --32 and --64 command line arguments (#97)
Megan Wachs [Fri, 17 Nov 2017 00:34:02 +0000 (16:34 -0800)]
Debug: Use the --32 and --64 command line arguments (#97)

* Debug: Actually use the --32 and --64 command line arguments

* debug: make XLEN mismatch message clearer

6 years agoDisable PMP for PrivRw test.
Tim Newsome [Thu, 16 Nov 2017 23:40:27 +0000 (15:40 -0800)]
Disable PMP for PrivRw test.

6 years agoClarify PrivTest detail.
Tim Newsome [Thu, 16 Nov 2017 00:51:49 +0000 (16:51 -0800)]
Clarify PrivTest detail.

6 years agoMake sure that code is 4-byte aligned before disabling rvc (#100)
Andrew Waterman [Sun, 12 Nov 2017 00:15:22 +0000 (16:15 -0800)]
Make sure that code is 4-byte aligned before disabling rvc (#100)

6 years agoMake rv64mi-p-ecall work when U-mode is not present
Andrew Waterman [Fri, 10 Nov 2017 03:25:22 +0000 (19:25 -0800)]
Make rv64mi-p-ecall work when U-mode is not present

6 years agoUse mstatus.MPP to check existence of U-mode
Andrew Waterman [Fri, 10 Nov 2017 01:12:49 +0000 (17:12 -0800)]
Use mstatus.MPP to check existence of U-mode

misa is allowed to be hardwired to 0, so checking its U bit could
incorrectly suggest that U-mode is not supported.

6 years agoAdd --print-log-names to print temp log names ASAP
Tim Newsome [Thu, 2 Nov 2017 22:14:40 +0000 (15:14 -0700)]
Add --print-log-names to print temp log names ASAP

When not passed, they are no longer printed out.

6 years agoEnsure gdb connection failures end up in main log.
Tim Newsome [Thu, 2 Nov 2017 20:11:50 +0000 (13:11 -0700)]
Ensure gdb connection failures end up in main log.

6 years agodebug: Need to apply remotetimeout before connecting to remote target (#94)
Megan Wachs [Thu, 2 Nov 2017 15:46:24 +0000 (08:46 -0700)]
debug: Need to apply remotetimeout before connecting to remote target (#94)

* debug: Need to apply remotetimeout before connecting to remote target

* debug: whitespace cleanup

6 years agoSBREAK test now checks EPC value. (#92)
Christopher Celio [Wed, 1 Nov 2017 20:46:34 +0000 (13:46 -0700)]
SBREAK test now checks EPC value. (#92)

Closes #89

6 years agoMake pylint 1.6.5 happy.
Tim Newsome [Wed, 1 Nov 2017 19:36:36 +0000 (12:36 -0700)]
Make pylint 1.6.5 happy.

6 years agoTest register aliases in the simple register tests
Tim Newsome [Wed, 1 Nov 2017 19:19:16 +0000 (12:19 -0700)]
Test register aliases in the simple register tests

6 years agoFix MulticoreRegTest.
Tim Newsome [Wed, 1 Nov 2017 18:43:04 +0000 (11:43 -0700)]
Fix MulticoreRegTest.

This test would fail intermittently if gdb on the first hart managed to
set a breakpoint, resume, halt, and clear the breakpoint before the
second hart got a chance to resume.

6 years agoMerge pull request #90 from richardxia/comment-out-multicore-reg-test
Palmer Dabbelt [Tue, 31 Oct 2017 23:07:21 +0000 (16:07 -0700)]
Merge pull request #90 from richardxia/comment-out-multicore-reg-test

Temporarily comment out MulticoreRegTest due to flakiness.

6 years agoTemporarily comment out MulticoreRegTest due to flakiness.
Richard Xia [Tue, 31 Oct 2017 20:19:21 +0000 (13:19 -0700)]
Temporarily comment out MulticoreRegTest due to flakiness.

6 years agoRemove cache miss test from last AMO test. (#88)
Richard Xia [Mon, 30 Oct 2017 22:44:21 +0000 (15:44 -0700)]
Remove cache miss test from last AMO test. (#88)

Follow-up to b68b39031a730ecc155ed87fba2ed5f111d0ab07.

The 64KiB allocated by the code to force a cache miss makes it impossible to run
the test from any memories that are smaller 64KiB, such as scratchpad memories
or LIMs. Since this is trying to test microarchitectural behavior, they don't
belong in these ISA tests anyway.

6 years agoDeclare trap handlers as global symbols. (#87)
Richard Xia [Mon, 30 Oct 2017 19:18:49 +0000 (12:18 -0700)]
Declare trap handlers as global symbols. (#87)

This allows them to be referenced by other files, such as a test environment
that lives in a separate compilation unit.

6 years agoVerify that mtval/stval is written correctly on misaligned fetch
Andrew Waterman [Wed, 20 Sep 2017 17:47:11 +0000 (10:47 -0700)]
Verify that mtval/stval is written correctly on misaligned fetch

6 years agoFix rv64mi-csr for the case where U-mode is not available. (#86)
Richard Xia [Fri, 27 Oct 2017 04:33:49 +0000 (21:33 -0700)]
Fix rv64mi-csr for the case where U-mode is not available. (#86)

6 years agoIncrease dual-core RV64 timeouts.
Tim Newsome [Tue, 24 Oct 2017 18:55:01 +0000 (11:55 -0700)]
Increase dual-core RV64 timeouts.

I need this for CompareSections to pass when I instrument spike to be
really slow.

6 years agoGet helpful gdb output in MemTestBlock.
Tim Newsome [Thu, 19 Oct 2017 20:21:26 +0000 (13:21 -0700)]
Get helpful gdb output in MemTestBlock.

6 years agoPay attention to server_timeout_sec
Tim Newsome [Thu, 12 Oct 2017 18:53:22 +0000 (11:53 -0700)]
Pay attention to server_timeout_sec

Fixes #83.

6 years agoResurrect priv tests.
Tim Newsome [Sat, 30 Sep 2017 21:48:15 +0000 (14:48 -0700)]
Resurrect priv tests.

6 years agoMerge pull request #79 from riscv/multigdb
Tim Newsome [Wed, 4 Oct 2017 19:40:30 +0000 (12:40 -0700)]
Merge pull request #79 from riscv/multigdb

Multigdb support

6 years agoMake ExamineTarget multi-core aware.
Tim Newsome [Fri, 29 Sep 2017 22:41:30 +0000 (15:41 -0700)]
Make ExamineTarget multi-core aware.

Now on multi-core targets it only runs once, wasting less time.

6 years agoFix tests to work in multi-gdb mode.
Tim Newsome [Fri, 29 Sep 2017 20:20:30 +0000 (13:20 -0700)]
Fix tests to work in multi-gdb mode.

The Gdb class now can handle connecting to more than one gdb. It
enumerates the harts across all connections, and when asked to select a
hart, it transparently sends future gdb commands to the correct
instance.

Multicore tests still have to be aware of some differences. The main one
is that when executing 'c' in RTOS mode, all harts resume, while in
multi-gdb mode only the current one resumes. Additionally, gdb doesn't
set breakpoints until 'c' is issued, so the hart where breakpoints are
set needs to be resumed before other harts might see them.

6 years agoRemove unused function.
Tim Newsome [Fri, 22 Sep 2017 19:57:51 +0000 (12:57 -0700)]
Remove unused function.

6 years agoAdd coverage for single-core non-rtos OpenOCD.
Tim Newsome [Thu, 21 Sep 2017 22:19:47 +0000 (15:19 -0700)]
Add coverage for single-core non-rtos OpenOCD.

6 years agoAllow multiple reset vectors.
Tim Newsome [Wed, 20 Sep 2017 00:10:36 +0000 (17:10 -0700)]
Allow multiple reset vectors.

Some boards have jumpers that control the reset vector, and forcing them
one way or another is more annoying than dealing with it in software.

6 years agoLink against libm for fma()
Andrew Waterman [Tue, 19 Sep 2017 21:34:42 +0000 (14:34 -0700)]
Link against libm for fma()

6 years agoMerge pull request #76 from riscv/multicore
Tim Newsome [Tue, 19 Sep 2017 21:12:12 +0000 (14:12 -0700)]
Merge pull request #76 from riscv/multicore

Add interrupts to MulticoreRunHaltStepiTest.

6 years agoForgot to commit this earlier.
Tim Newsome [Tue, 19 Sep 2017 18:23:35 +0000 (11:23 -0700)]
Forgot to commit this earlier.

Fixes #77.

6 years agoAdd interrupts to MulticoreRunHaltStepiTest.
Tim Newsome [Mon, 18 Sep 2017 18:31:08 +0000 (11:31 -0700)]
Add interrupts to MulticoreRunHaltStepiTest.

Just to hammer on anything at once, and hopefully catch weird
interactions if they exist.

6 years agoDon't read entire log into RAM just to print it.
Tim Newsome [Fri, 15 Sep 2017 19:03:52 +0000 (12:03 -0700)]
Don't read entire log into RAM just to print it.

6 years agomisa is stored in the hart now, not the target
Tim Newsome [Thu, 14 Sep 2017 23:26:51 +0000 (16:26 -0700)]
misa is stored in the hart now, not the target

6 years agoWhen spike fails to launch, display its output.
Tim Newsome [Thu, 14 Sep 2017 19:59:08 +0000 (12:59 -0700)]
When spike fails to launch, display its output.

6 years agoTest debugging code with interrupts.
Tim Newsome [Wed, 13 Sep 2017 01:48:44 +0000 (18:48 -0700)]
Test debugging code with interrupts.

6 years agoCall postMortem() when a test fails.
Tim Newsome [Tue, 12 Sep 2017 18:21:06 +0000 (11:21 -0700)]
Call postMortem() when a test fails.

6 years agoClarify timeout units.
Tim Newsome [Tue, 12 Sep 2017 18:20:27 +0000 (11:20 -0700)]
Clarify timeout units.

6 years agoMove link options to end of gcc command line
Andrew Waterman [Thu, 14 Sep 2017 18:11:44 +0000 (11:11 -0700)]
Move link options to end of gcc command line

6 years agoMerge pull request #69 from riscv/multicore
Tim Newsome [Tue, 12 Sep 2017 16:36:34 +0000 (09:36 -0700)]
Merge pull request #69 from riscv/multicore

Proper multicore support for debug tests

6 years agoImprove ma_fetch test to cover JAL and branches
Andrew Waterman [Fri, 1 Sep 2017 18:15:44 +0000 (11:15 -0700)]
Improve ma_fetch test to cover JAL and branches

6 years agoAdd some infrastructure for multicore tests.
Tim Newsome [Fri, 1 Sep 2017 19:31:15 +0000 (12:31 -0700)]
Add some infrastructure for multicore tests.

When compiling, define the number of harts. This means we only need to
allocate a lot of stack if there are a lot of harts.

6 years agoUse 32-bit link script for 32-bit target.
Tim Newsome [Fri, 1 Sep 2017 19:03:40 +0000 (12:03 -0700)]
Use 32-bit link script for 32-bit target.

6 years agoThis file isn't ready yet.
Tim Newsome [Mon, 28 Aug 2017 20:40:15 +0000 (13:40 -0700)]
This file isn't ready yet.

6 years agoForgot to add this file.
Tim Newsome [Mon, 28 Aug 2017 19:43:08 +0000 (12:43 -0700)]
Forgot to add this file.

6 years agoIncrease remotetimeout for spike targets.
Tim Newsome [Mon, 28 Aug 2017 19:17:37 +0000 (12:17 -0700)]
Increase remotetimeout for spike targets.

On overloaded systems, when executing compare-sections, otherwise gdb
might hit a timeout and the compare-sections code doesn't deal with it.
(You get an error message complaining that 130 is not a valid hex
digit.)

6 years agoFix rebase bug.
Tim Newsome [Tue, 15 Aug 2017 22:32:24 +0000 (15:32 -0700)]
Fix rebase bug.

6 years agoMake MemTestBlock output a more descriptive error.
Tim Newsome [Sun, 13 Aug 2017 20:56:44 +0000 (13:56 -0700)]
Make MemTestBlock output a more descriptive error.

6 years agoFix MemTest* after sloppy rebase.
Tim Newsome [Sun, 13 Aug 2017 19:50:39 +0000 (12:50 -0700)]
Fix MemTest* after sloppy rebase.

6 years agoRename test to MulticoreRunHaltStepiTest.
Tim Newsome [Fri, 11 Aug 2017 20:25:06 +0000 (13:25 -0700)]
Rename test to MulticoreRunHaltStepiTest.

6 years agoMake pylint happy.
Tim Newsome [Fri, 11 Aug 2017 19:55:25 +0000 (12:55 -0700)]
Make pylint happy.

6 years agoWIP multicore testing.
Tim Newsome [Thu, 10 Aug 2017 18:27:04 +0000 (11:27 -0700)]
WIP multicore testing.

6 years agoWIP towards multiple gdb instances.
Tim Newsome [Mon, 7 Aug 2017 22:13:09 +0000 (15:13 -0700)]
WIP towards multiple gdb instances.

6 years agoMake the debug tests aware of multicore.
Tim Newsome [Mon, 7 Aug 2017 19:51:42 +0000 (12:51 -0700)]
Make the debug tests aware of multicore.

Targets now contain an array of harts. When running a regular test, one
hart is selected to run the test on while the remaining harts are parked
in a safe infinite loop.

There's currently only one test that tests multicore behavior, but there
could be more.

The infrastructure should be able to support heterogeneous multicore,
but I don't have a target like that to test with.