X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=debug%2Ftestlib.py;h=86095e38c8fc88cd4f4889f2deb904c3adbd8801;hb=e341f6ceb8f2de55c60a56ce36ab5b021d569457;hp=e749a1a7919bbf2827559e098fc187657ee7aa69;hpb=36b305709080d84b5d4516ab344acb09349ae6d8;p=riscv-tests.git

diff --git a/debug/testlib.py b/debug/testlib.py
index e749a1a..86095e3 100644
--- a/debug/testlib.py
+++ b/debug/testlib.py
@@ -1,72 +1,107 @@
 import os.path
-import pexpect
+import re
 import shlex
 import subprocess
-import tempfile
-import testlib
-import unittest
+import sys
+import time
+import traceback
+
+import pexpect
 
 # Note that gdb comes with its own testsuite. I was unable to figure out how to
 # run that testsuite against the spike simulator.
 
 def find_file(path):
-    for directory in (os.getcwd(), os.path.dirname(testlib.__file__)):
+    for directory in (os.getcwd(), os.path.dirname(__file__)):
         fullpath = os.path.join(directory, path)
         if os.path.exists(fullpath):
             return fullpath
     return None
 
-def compile(args, xlen=32):
-    """Compile a single .c file into a binary."""
-    dst = os.path.splitext(args[0])[0]
-    cc = os.path.expandvars("$RISCV/bin/riscv%d-unknown-elf-gcc" % xlen)
-    cmd = [cc, "-g", "-o", dst]
+def compile(args, xlen=32): # pylint: disable=redefined-builtin
+    cc = os.path.expandvars("$RISCV/bin/riscv64-unknown-elf-gcc")
+    cmd = [cc, "-g"]
+    if (xlen == 32):
+        cmd.append("-march=rv32imac")
+        cmd.append("-mabi=ilp32")
+    else:
+        cmd.append("-march=rv64imac")
+        cmd.append("-mabi=lp64")        
     for arg in args:
         found = find_file(arg)
         if found:
             cmd.append(found)
         else:
             cmd.append(arg)
-    cmd = " ".join(cmd)
-    result = os.system(cmd)
-    assert result == 0, "%r failed" % cmd
-    return dst
+    process = subprocess.Popen(cmd, stdout=subprocess.PIPE,
+                               stderr=subprocess.PIPE)
+    stdout, stderr = process.communicate()
+    if process.returncode:
+        print
+        header("Compile failed")
+        print "+", " ".join(cmd)
+        print stdout,
+        print stderr,
+        header("")
+        raise Exception("Compile failed!")
 
 def unused_port():
     # http://stackoverflow.com/questions/2838244/get-open-tcp-port-in-python/2838309#2838309
     import socket
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-    s.bind(("",0))
+    s.bind(("", 0))
     port = s.getsockname()[1]
     s.close()
     return port
 
 class Spike(object):
-    def __init__(self, cmd, binary=None, halted=False, with_gdb=True, timeout=None,
-            xlen=64):
-        """Launch spike. Return tuple of its process and the port it's running on."""
-        if cmd:
-            cmd = shlex.split(cmd)
+    logname = "spike.log"
+
+    def __init__(self, sim_cmd, binary=None, halted=False, with_jtag_gdb=True,
+            timeout=None, xlen=64):
+        """Launch spike. Return tuple of its process and the port it's running
+        on."""
+        if sim_cmd:
+            cmd = shlex.split(sim_cmd)
+        else:
+            spike = os.path.expandvars("$RISCV/bin/spike")
+            cmd = [spike]
+        if xlen == 32:
+            cmd += ["--isa", "RV32G"]
         else:
-            cmd = ["spike"]
-        if (xlen == 32):
-            cmd += ["--isa", "RV32"]
+            cmd += ["--isa", "RV64G"]
 
         if timeout:
             cmd = ["timeout", str(timeout)] + cmd
 
+        cmd += ["-m0x10000000:0x10000000"]
+
         if halted:
             cmd.append('-H')
-        if with_gdb:
-            self.port = unused_port()
-            cmd += ['--gdb-port', str(self.port)]
-        cmd.append('pk')
+        if with_jtag_gdb:
+            cmd += ['--rbb-port', '0']
+            os.environ['REMOTE_BITBANG_HOST'] = 'localhost'
+        cmd.append('programs/infinite_loop')
         if binary:
             cmd.append(binary)
-        logfile = open("spike.log", "w")
+        logfile = open(self.logname, "w")
         logfile.write("+ %s\n" % " ".join(cmd))
-        self.process = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=logfile,
-                stderr=logfile)
+        logfile.flush()
+        self.process = subprocess.Popen(cmd, stdin=subprocess.PIPE,
+                stdout=logfile, stderr=logfile)
+
+        if with_jtag_gdb:
+            self.port = None
+            for _ in range(30):
+                m = re.search(r"Listening for remote bitbang connection on "
+                        r"port (\d+).", open(self.logname).read())
+                if m:
+                    self.port = int(m.group(1))
+                    os.environ['REMOTE_BITBANG_PORT'] = m.group(1)
+                    break
+                time.sleep(0.11)
+            assert self.port, "Didn't get spike message about bitbang " \
+                    "connection"
 
     def __del__(self):
         try:
@@ -78,21 +113,130 @@ class Spike(object):
     def wait(self, *args, **kwargs):
         return self.process.wait(*args, **kwargs)
 
+class VcsSim(object):
+    def __init__(self, sim_cmd=None, debug=False):
+        if sim_cmd:
+            cmd = shlex.split(sim_cmd)
+        else:
+            cmd = ["simv"]
+        cmd += ["+jtag_vpi_enable"]
+        if debug:
+            cmd[0] = cmd[0] + "-debug"
+            cmd += ["+vcdplusfile=output/gdbserver.vpd"]
+        logfile = open("simv.log", "w")
+        logfile.write("+ %s\n" % " ".join(cmd))
+        logfile.flush()
+        listenfile = open("simv.log", "r")
+        listenfile.seek(0, 2)
+        self.process = subprocess.Popen(cmd, stdin=subprocess.PIPE,
+                stdout=logfile, stderr=logfile)
+        done = False
+        while not done:
+            line = listenfile.readline()
+            if not line:
+                time.sleep(1)
+            match = re.match(r"^Listening on port (\d+)$", line)
+            if match:
+                done = True
+                self.port = int(match.group(1))
+                os.environ['JTAG_VPI_PORT'] = str(self.port)
+
+    def __del__(self):
+        try:
+            self.process.kill()
+            self.process.wait()
+        except OSError:
+            pass
+
 class Openocd(object):
-    def __init__(self, cmd=None, config=None, debug=True):
-        if cmd:
-            cmd = shlex.split(cmd)
+    logname = "openocd.log"
+
+    def __init__(self, server_cmd=None, config=None, debug=False):
+        if server_cmd:
+            cmd = shlex.split(server_cmd)
         else:
-            cmd = ["openocd"]
+            openocd = os.path.expandvars("$RISCV/bin/riscv-openocd")
+            cmd = [openocd]
+            if (debug):
+                cmd.append("-d")
+        
+        # This command needs to come before any config scripts on the command
+        # line, since they are executed in order.
+        cmd += [
+            # Tell OpenOCD to bind gdb to an unused, ephemeral port.
+            "--command",
+            "gdb_port 0",
+            # Disable tcl and telnet servers, since they are unused and because
+            # the port numbers will conflict if multiple OpenOCD processes are
+            # running on the same server.
+            "--command",
+            "tcl_port disabled",
+            "--command",
+            "telnet_port disabled",
+        ]
+
         if config:
-            cmd += ["-f", find_file(config)]
+            f = find_file(config)
+            if f is None:
+                print("Unable to read file " + config)
+                exit(1)
+
+            cmd += ["-f", f]
         if debug:
             cmd.append("-d")
-        logfile = open("openocd.log", "w")
-        self.process = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=logfile,
-                stderr=logfile)
-        # TODO: Pick a random port
-        self.port = 3333
+
+        logfile = open(Openocd.logname, "w")
+        logfile.write("+ %s\n" % " ".join(cmd))
+        logfile.flush()
+        self.process = subprocess.Popen(cmd, stdin=subprocess.PIPE,
+                stdout=logfile, stderr=logfile)
+
+        # Wait for OpenOCD to have made it through riscv_examine(). When using
+        # OpenOCD to communicate with a simulator this may take a long time,
+        # and gdb will time out when trying to connect if we attempt too early.
+        start = time.time()
+        messaged = False
+        while True:
+            log = open(Openocd.logname).read()
+            if "Ready for Remote Connections" in log:
+                break
+            if not self.process.poll() is None:
+                raise Exception(
+                        "OpenOCD exited before completing riscv_examine()")
+            if not messaged and time.time() - start > 1:
+                messaged = True
+                print "Waiting for OpenOCD to examine RISCV core..."
+
+        self.port = self._get_gdb_server_port()
+
+    def _get_gdb_server_port(self):
+        """Get port that OpenOCD's gdb server is listening on."""
+        MAX_ATTEMPTS = 50
+        PORT_REGEX = re.compile(r'(?P<port>\d+) \(LISTEN\)')
+        for _ in range(MAX_ATTEMPTS):
+            with open(os.devnull, 'w') as devnull:
+                try:
+                    output = subprocess.check_output([
+                        'lsof',
+                        '-a',  # Take the AND of the following selectors
+                        '-p{}'.format(self.process.pid),  # Filter on PID
+                        '-iTCP',  # Filter only TCP sockets
+                    ], stderr=devnull)
+                except subprocess.CalledProcessError:
+                    output = ""
+            matches = list(PORT_REGEX.finditer(output))
+            matches = [m for m in matches
+                    if m.group('port') not in ('6666', '4444')]
+            if len(matches) > 1:
+                print output
+                raise Exception(
+                    "OpenOCD listening on multiple ports. Cannot uniquely "
+                    "identify gdb server port.")
+            elif matches:
+                [match] = matches
+                return int(match.group('port'))
+            time.sleep(1)
+        raise Exception("Timed out waiting for gdb server to obtain port.")
 
     def __del__(self):
         try:
@@ -101,11 +245,43 @@ class Openocd(object):
         except OSError:
             pass
 
+class OpenocdCli(object):
+    def __init__(self, port=4444):
+        self.child = pexpect.spawn(
+                "sh -c 'telnet localhost %d | tee openocd-cli.log'" % port)
+        self.child.expect("> ")
+
+    def command(self, cmd):
+        self.child.sendline(cmd)
+        self.child.expect(cmd)
+        self.child.expect("\n")
+        self.child.expect("> ")
+        return self.child.before.strip("\t\r\n \0")
+
+    def reg(self, reg=''):
+        output = self.command("reg %s" % reg)
+        matches = re.findall(r"(\w+) \(/\d+\): (0x[0-9A-F]+)", output)
+        values = {r: int(v, 0) for r, v in matches}
+        if reg:
+            return values[reg]
+        return values
+
+    def load_image(self, image):
+        output = self.command("load_image %s" % image)
+        if 'invalid ELF file, only 32bits files are supported' in output:
+            raise TestNotApplicable(output)
+
+class CannotAccess(Exception):
+    def __init__(self, address):
+        Exception.__init__(self)
+        self.address = address
+
 class Gdb(object):
     def __init__(self,
-            path=os.path.expandvars("$RISCV/bin/riscv64-unknown-elf-gdb")):
-        self.child = pexpect.spawn(path)
-        self.child.logfile = file("gdb.log", "w")
+            cmd=os.path.expandvars("$RISCV/bin/riscv64-unknown-elf-gdb")):
+        self.child = pexpect.spawn(cmd)
+        self.child.logfile = open("gdb.log", "w")
+        self.child.logfile.write("+ %s\n" % cmd)
         self.wait()
         self.command("set confirm off")
         self.command("set width 0")
@@ -115,17 +291,17 @@ class Gdb(object):
 
     def wait(self):
         """Wait for prompt."""
-        self.child.expect("\(gdb\)")
+        self.child.expect(r"\(gdb\)")
 
-    def command(self, command, timeout=-1):
+    def command(self, command, timeout=6000):
         self.child.sendline(command)
         self.child.expect("\n", timeout=timeout)
-        self.child.expect("\(gdb\)", timeout=timeout)
+        self.child.expect(r"\(gdb\)", timeout=timeout)
         return self.child.before.strip()
 
-    def c(self, wait=True):
+    def c(self, wait=True, timeout=-1):
         if wait:
-            output = self.command("c")
+            output = self.command("c", timeout=timeout)
             assert "Continuing" in output
             return output
         else:
@@ -133,8 +309,8 @@ class Gdb(object):
             self.child.expect("Continuing")
 
     def interrupt(self):
-        self.child.send("\003");
-        self.child.expect("\(gdb\)")
+        self.child.send("\003")
+        self.child.expect(r"\(gdb\)", timeout=6000)
         return self.child.before.strip()
 
     def x(self, address, size='w'):
@@ -142,18 +318,32 @@ class Gdb(object):
         value = int(output.split(':')[1].strip(), 0)
         return value
 
+    def p_raw(self, obj):
+        output = self.command("p %s" % obj)
+        m = re.search("Cannot access memory at address (0x[0-9a-f]+)", output)
+        if m:
+            raise CannotAccess(int(m.group(1), 0))
+        return output.split('=')[-1].strip()
+
     def p(self, obj):
         output = self.command("p/x %s" % obj)
+        m = re.search("Cannot access memory at address (0x[0-9a-f]+)", output)
+        if m:
+            raise CannotAccess(int(m.group(1), 0))
         value = int(output.split('=')[-1].strip(), 0)
         return value
 
+    def p_string(self, obj):
+        output = self.command("p %s" % obj)
+        value = shlex.split(output.split('=')[-1].strip())[1]
+        return value
+
     def stepi(self):
         output = self.command("stepi")
-        assert "Cannot" not in output
         return output
 
     def load(self):
-        output = self.command("load", timeout=60)
+        output = self.command("load", timeout=6000)
         assert "failed" not in  output
         assert "Transfer rate" in output
 
@@ -168,3 +358,260 @@ class Gdb(object):
         assert "not defined" not in output
         assert "Hardware assisted breakpoint" in output
         return output
+
+def run_all_tests(module, target, parsed):
+    good_results = set(('pass', 'not_applicable'))
+
+    start = time.time()
+
+    results = {}
+    count = 0
+
+    global gdb_cmd  # pylint: disable=global-statement
+    gdb_cmd = parsed.gdb
+
+    todo = []
+    if (parsed.misa):
+        self.target.misa = parsed.misa
+    else:
+        todo.append(("ExamineTarget", ExamineTarget))
+
+    for name in dir(module):
+        definition = getattr(module, name)
+        if type(definition) == type and hasattr(definition, 'test') and \
+                (not parsed.test or any(test in name for test in parsed.test)):
+            todo.append((name, definition))
+
+    for name, definition in todo:
+        instance = definition(target)
+        result = instance.run()
+        results.setdefault(result, []).append(name)
+        count += 1
+        if result not in good_results and parsed.fail_fast:
+            break
+
+    header("ran %d tests in %.0fs" % (count, time.time() - start), dash=':')
+
+    result = 0
+    for key, value in results.iteritems():
+        print "%d tests returned %s" % (len(value), key)
+        if key not in good_results:
+            result = 1
+            for test in value:
+                print "   ", test
+
+    return result
+
+def add_test_run_options(parser):
+    parser.add_argument("--fail-fast", "-f", action="store_true",
+            help="Exit as soon as any test fails.")
+    parser.add_argument("test", nargs='*',
+            help="Run only tests that are named here.")
+    parser.add_argument("--gdb",
+            help="The command to use to start gdb.")
+    parser.add_argument("--misa", "-m",
+            help="Don't run ExamineTarget, just assume the misa which is specified.")
+
+def header(title, dash='-'):
+    if title:
+        dashes = dash * (36 - len(title))
+        before = dashes[:len(dashes)/2]
+        after = dashes[len(dashes)/2:]
+        print "%s[ %s ]%s" % (before, title, after)
+    else:
+        print dash * 40
+
+def print_log(path):
+    header(path)
+    lines = open(path, "r").readlines()
+    if len(lines) > 1000:
+        for l in lines[:500]:
+            sys.stdout.write(l)
+        print "..."
+        for l in lines[-500:]:
+            sys.stdout.write(l)
+    else:
+        for l in lines:
+            sys.stdout.write(l)
+
+class BaseTest(object):
+    compiled = {}
+
+    def __init__(self, target):
+        self.target = target
+        self.server = None
+        self.target_process = None
+        self.binary = None
+        self.start = 0
+        self.logs = []
+
+    def early_applicable(self):
+        """Return a false value if the test has determined it cannot run
+        without ever needing to talk to the target or server."""
+        # pylint: disable=no-self-use
+        return True
+
+    def setup(self):
+        pass
+
+    def compile(self):
+        compile_args = getattr(self, 'compile_args', None)
+        if compile_args:
+            if compile_args not in BaseTest.compiled:
+                # pylint: disable=star-args
+                BaseTest.compiled[compile_args] = \
+                        self.target.compile(*compile_args)
+        self.binary = BaseTest.compiled.get(compile_args)
+
+    def classSetup(self):
+        self.compile()
+        self.target_process = self.target.target()
+        self.server = self.target.server()
+        self.logs.append(self.server.logname)
+
+    def classTeardown(self):
+        del self.server
+        del self.target_process
+
+    def run(self):
+        """
+        If compile_args is set, compile a program and set self.binary.
+
+        Call setup().
+
+        Then call test() and return the result, displaying relevant information
+        if an exception is raised.
+        """
+
+        print "Running", type(self).__name__, "...",
+        sys.stdout.flush()
+
+        if not self.early_applicable():
+            print "not_applicable"
+            return "not_applicable"
+
+        self.start = time.time()
+
+        self.classSetup()
+
+        try:
+            self.setup()
+            result = self.test()    # pylint: disable=no-member
+        except TestNotApplicable:
+            result = "not_applicable"
+        except Exception as e: # pylint: disable=broad-except
+            if isinstance(e, TestFailed):
+                result = "fail"
+            else:
+                result = "exception"
+            print "%s in %.2fs" % (result, time.time() - self.start)
+            print "=" * 40
+            if isinstance(e, TestFailed):
+                header("Message")
+                print e.message
+            header("Traceback")
+            traceback.print_exc(file=sys.stdout)
+            for log in self.logs:
+                print_log(log)
+            print "/" * 40
+            return result
+
+        finally:
+            self.classTeardown()
+
+        if not result:
+            result = 'pass'
+        print "%s in %.2fs" % (result, time.time() - self.start)
+        return result
+
+gdb_cmd = None
+class GdbTest(BaseTest):
+    def __init__(self, target):
+        BaseTest.__init__(self, target)
+        self.gdb = None
+
+    def classSetup(self):
+        BaseTest.classSetup(self)
+        self.logs.append("gdb.log")
+
+        if gdb_cmd:
+            self.gdb = Gdb(gdb_cmd)
+        else:
+            self.gdb = Gdb()
+
+        if self.binary:
+            self.gdb.command("file %s" % self.binary)
+        if self.target:
+            self.gdb.command("set arch riscv:rv%d" % self.target.xlen)
+            self.gdb.command("set remotetimeout %d" % self.target.timeout_sec)
+        if self.server.port:
+            self.gdb.command(
+                    "target extended-remote localhost:%d" % self.server.port)
+
+        # FIXME: OpenOCD doesn't handle PRIV now
+        #self.gdb.p("$priv=3")
+
+    def classTeardown(self):
+        del self.gdb
+        BaseTest.classTeardown(self)
+
+class ExamineTarget(GdbTest):
+    def test(self):
+        self.target.misa = self.gdb.p("$misa")
+
+        txt = "RV"
+        if (self.target.misa >> 30) == 1:
+            txt += "32"
+        elif (self.target.misa >> 62) == 2:
+            txt += "64"
+        elif (self.target.misa >> 126) == 3:
+            txt += "128"
+        else:
+            txt += "??"
+
+        for i in range(26):
+            if self.target.misa & (1<<i):
+                txt += chr(i + ord('A'))
+        print txt,
+
+class TestFailed(Exception):
+    def __init__(self, message):
+        Exception.__init__(self)
+        self.message = message
+
+class TestNotApplicable(Exception):
+    def __init__(self, message):
+        Exception.__init__(self)
+        self.message = message
+
+def assertEqual(a, b):
+    if a != b:
+        raise TestFailed("%r != %r" % (a, b))
+
+def assertNotEqual(a, b):
+    if a == b:
+        raise TestFailed("%r == %r" % (a, b))
+
+def assertIn(a, b):
+    if a not in b:
+        raise TestFailed("%r not in %r" % (a, b))
+
+def assertNotIn(a, b):
+    if a in b:
+        raise TestFailed("%r in %r" % (a, b))
+
+def assertGreater(a, b):
+    if not a > b:
+        raise TestFailed("%r not greater than %r" % (a, b))
+
+def assertLess(a, b):
+    if not a < b:
+        raise TestFailed("%r not less than %r" % (a, b))
+
+def assertTrue(a):
+    if not a:
+        raise TestFailed("%r is not True" % a)
+
+def assertRegexpMatches(text, regexp):
+    if not re.search(regexp, text):
+        raise TestFailed("can't find %r in %r" % (regexp, text))