From: Tim Newsome <tim@sifive.com>
Date: Thu, 20 Oct 2016 21:49:44 +0000 (-0700)
Subject: Test OpenOCD step and resume.
X-Git-Url: https://git.libre-soc.org/?p=riscv-tests.git;a=commitdiff_plain;h=30d113085a08b0cde585c7e0d8b19e0cc6cbc046

Test OpenOCD step and resume.
---

diff --git a/debug/openocd.py b/debug/openocd.py
index 4a71035..3807210 100755
--- a/debug/openocd.py
+++ b/debug/openocd.py
@@ -7,7 +7,7 @@ import sys
 
 import targets
 import testlib
-from testlib import assertRegexpMatches
+from testlib import assertIn, assertEqual
 
 class OpenOcdTest(testlib.BaseTest):
     def __init__(self, target):
@@ -20,13 +20,42 @@ class OpenOcdTest(testlib.BaseTest):
     def setup(self):
         # pylint: disable=attribute-defined-outside-init
         self.cli = testlib.OpenocdCli()
+        self.cli.command("halt")
 
 class RegTest(OpenOcdTest):
     def test(self):
-        self.cli.command("halt")
-        output = self.cli.command("reg")
-        assertRegexpMatches(output, r"x18 \(/%d\): 0x[0-9A-F]+" %
-                self.target.xlen)
+        regs = self.cli.reg()
+        assertIn("x18", regs)
+
+class StepTest(OpenOcdTest):
+    def test(self):
+        # 0x13 is nop
+        for address in range(self.target.ram, self.target.ram + 16, 4):
+            self.cli.command("mww 0x%x 0x13" % address)
+
+        self.cli.command("step 0x%x" % self.target.ram)
+        for i in range(4):
+            pc = self.cli.reg("pc")
+            assertEqual(pc, self.target.ram + 4 * (i+1))
+            self.cli.command("step")
+
+class ResumeTest(OpenOcdTest):
+    def test(self):
+        # 0x13 is nop
+        for address in range(self.target.ram, self.target.ram + 32, 4):
+            self.cli.command("mww 0x%x 0x13" % address)
+
+        self.cli.command("bp 0x%x 4" % (self.target.ram + 12))
+        self.cli.command("bp 0x%x 4" % (self.target.ram + 24))
+
+        self.cli.command("resume 0x%x" % self.target.ram)
+        assertEqual(self.cli.reg("pc"), self.target.ram + 12)
+
+        self.cli.command("resume")
+        assertEqual(self.cli.reg("pc"), self.target.ram + 24)
+
+        self.cli.command("resume 0x%x" % self.target.ram)
+        assertEqual(self.cli.reg("pc"), self.target.ram + 12)
 
 def main():
     parser = argparse.ArgumentParser(
diff --git a/debug/testlib.py b/debug/testlib.py
index 100b124..a38b99b 100644
--- a/debug/testlib.py
+++ b/debug/testlib.py
@@ -173,9 +173,23 @@ class OpenocdCli(object):
 
     def command(self, cmd):
         self.child.sendline(cmd)
+        self.child.expect(cmd)
         self.child.expect("\n")
         self.child.expect("> ")
-        return self.child.before.strip()
+        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):
@@ -372,6 +386,8 @@ class BaseTest(object):
         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"
@@ -403,6 +419,11 @@ class TestFailed(Exception):
         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))