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import os.path
import pexpect
import subprocess
import tempfile
import testlib
import unittest
# 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__)):
fullpath = os.path.join(directory, path)
if os.path.exists(fullpath):
return fullpath
raise ValueError("Couldn't find %r." % path)
def compile(src, dst):
"""Compile a single .c file into a binary."""
cc = os.path.expandvars("$RISCV/bin/riscv64-unknown-elf-gcc")
return os.system("%s -g -o %s %s" % (cc, dst, find_file(src)))
def spike(binary, halted=False):
cmd = [find_file("spike")]
if halted:
cmd.append('-H')
cmd += ['pk', binary]
logfile = open("spike.log", "w")
return subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=logfile, stderr=logfile)
class Gdb(object):
def __init__(self):
path = os.path.expandvars("$RISCV/bin/riscv64-unknown-elf-gdb")
self.child = pexpect.spawn(path)
self.child.logfile = file("gdb.log", "w")
self.wait()
self.command("set width 0")
self.command("set height 0")
def wait(self):
"""Wait for prompt."""
self.child.expect("\(gdb\)")
def command(self, command):
self.child.sendline(command)
self.child.expect("\n")
self.child.expect("\(gdb\)")
return self.child.before.strip()
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