Test access exception behavior for illegal addresses (#111)

[riscv-tests.git] / debug / README.md

diff --git a/debug/README.md b/debug/README.md
index 3fa43c767a4e786c9c7a3fa46b9eedbdd84a93b0..1a802cfe0a63fe58ec7c734602fb933c6ffd6cad 100644 (file)
--- a/debug/README.md
+++ b/debug/README.md
@@ -1,15 +1,58 @@
-Debugging requires many of a system components to all work together.  The goal
-is to collect some tests that test gdb with spike, and gdb talking to real
-hardware through openocd.
+Debug Tests
+===========
+
+Debugging requires many system components to all work together. The tests here
+perform an end-to-end test, communicating with gdb and OpenOCD.
+If a simulator or hardware passes all these tests, then you can be pretty
+confident that the actual debug interface is functioning correctly.
+
+Targets
+=======
+
+64-bit Spike
+------------
+
+`./gdbserver.py targets/RISC-V/spike64.py`
+
+32-bit Spike
+------------
+
+`./gdbserver.py targets/RISC-V/spike32.py`
+
+32-bit SiFive Core on Supported FPGA Boards & Hardware
+------------------------------------------------------
+
+`./gdbserver.py targets/SiFive/E300.py`
+`./gdbserver.py targets/SiFive/HiFive1.py`
+
+Custom Target
+-------------
+
+For custom targets, you can create a .py file anywhere and pass its path on the
+command line. The Targets class in `targets.py` contains documentation on what
+every variable means.
+
+
+Log Files
+=========
+
+All output from tests ends up in the `logs/` subdirectory, with one log file
+per test. If a test fails, this is where to look.
 
 Debug Tips
+==========
+
+You can run just a single test by specifying any part of its name on the
+command line, eg: `./gdbserver.py targets/RISC-V/spike64.py S0` runs
+SimpleS0Test.  Once that test has failed, you can look at the log file to get
+an idea of what might have gone wrong.
+
+You can see what spike is doing by adding `-l` to the spike command, eg.:
+`./gdbserver.py --sim_cmd "$RISCV/bin/spike -l" targets/RISC-V/spike32.py Breakpoint`
 
-You can run just a single test by specifying <class>.<function> on the command
-line, eg: `./gdbserver.py --spike --cmd $RISCV/bin/spike
-SimpleRegisterTest.test_s0`.
-Once that test has failed, you can look at gdb.log and (in this case) spike.log
-to get an idea of what might have gone wrong.
+You can see what OpenOCD is doing by adding `-d` to the OpenOCD command, eg.:
+`./gdbserver.py --server_cmd "openocd -d" targets/RISC-V/spike32.py Breakpoint`
 
-You can see what spike is doing by add `-l` to the spike command, eg.:
-`./gdbserver.py --spike32 --cmd "$RISCV/bin/spike -l"
-DebugTest.test_breakpoint`. (Then look at spike.log.)
+You can run gdb under valgrind by passing --gdb, eg.: `./gdbserver.py
+--gdb "valgrind riscv64-unknown-elf-gdb" targets/RISC-V/spike64.py
+DownloadTest`