diff options
Diffstat (limited to 'tests/gdbserver.py')
| -rwxr-xr-x | tests/gdbserver.py | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/tests/gdbserver.py b/tests/gdbserver.py deleted file mode 100755 index f16a3cc..0000000 --- a/tests/gdbserver.py +++ /dev/null @@ -1,225 +0,0 @@ -#!/usr/bin/python - -import os -import testlib -import unittest -import tempfile -import time -import random -import binascii - -class DeleteSpike(unittest.TestCase): - def tearDown(self): - del self.spike - -class InstantHaltTest(DeleteSpike): - def setUp(self): - self.binary = testlib.compile("debug.c") - self.spike = testlib.Spike(self.binary, halted=True) - self.gdb = testlib.Gdb() - self.gdb.command("file %s" % self.binary) - self.gdb.command("target extended-remote localhost:%d" % self.spike.port) - - def test_instant_halt(self): - self.assertEqual(0x1000, self.gdb.p("$pc")) - # For some reason instret resets to 0. - self.assertLess(self.gdb.p("$instret"), 8) - self.gdb.command("stepi") - self.assertNotEqual(0x1000, self.gdb.p("$pc")) - - def test_change_pc(self): - """Change the PC right as we come out of reset.""" - # 0x13 is nop - self.gdb.command("p *((int*) 0x80000000)=0x13") - self.gdb.command("p *((int*) 0x80000004)=0x13") - self.gdb.command("p *((int*) 0x80000008)=0x13") - self.gdb.command("p $pc=0x80000000") - self.gdb.command("stepi") - self.assertEqual(0x80000004, self.gdb.p("$pc")) - self.gdb.command("stepi") - self.assertEqual(0x80000008, self.gdb.p("$pc")) - -class DebugTest(DeleteSpike): - def setUp(self): - self.binary = testlib.compile("debug.c") - self.spike = testlib.Spike(self.binary, halted=False) - self.gdb = testlib.Gdb() - self.gdb.command("file %s" % self.binary) - self.gdb.command("target extended-remote localhost:%d" % self.spike.port) - - def test_turbostep(self): - """Single step a bunch of times.""" - self.gdb.command("p i=0"); - last_pc = None - for _ in range(100): - self.gdb.command("stepi") - pc = self.gdb.command("p $pc") - self.assertNotEqual(last_pc, pc) - last_pc = pc - - def test_exit(self): - self.gdb.command("p i=0"); - output = self.gdb.command("c") - self.assertIn("Continuing", output) - self.assertIn("Remote connection closed", output) - - def test_breakpoint(self): - self.gdb.command("p i=0"); - self.gdb.command("b print_row") - # The breakpoint should be hit exactly 10 times. - for i in range(10): - output = self.gdb.command("c") - self.assertIn("Continuing", output) - self.assertIn("length=%d" % i, output) - self.assertIn("Breakpoint 1", output) - output = self.gdb.command("c") - self.assertIn("Continuing", output) - self.assertIn("Remote connection closed", output) - - def test_registers(self): - self.gdb.command("p i=0"); - # Try both forms to test gdb. - for cmd in ("info all-registers", "info registers all"): - output = self.gdb.command(cmd) - self.assertNotIn("Could not", output) - for reg in ('zero', 'ra', 'sp', 'gp', 'tp'): - self.assertIn(reg, output) - # mcpuid is one of the few registers that should have the high bit set - # (for rv64). - # Leave this commented out until gdb and spike agree on the encoding of - # mcpuid (which is going to be renamed to misa in any case). - #self.assertRegexpMatches(output, ".*mcpuid *0x80") - - # The instret register should always be changing. - last_instret = None - for _ in range(5): - instret = self.gdb.p("$instret") - self.assertNotEqual(instret, last_instret) - last_instret = instret - self.gdb.command("stepi") - - def test_interrupt(self): - """Sending gdb ^C while the program is running should cause it to halt.""" - self.gdb.c(wait=False) - time.sleep(0.1) - self.gdb.interrupt() - self.gdb.command("p i=123"); - self.gdb.c(wait=False) - time.sleep(0.1) - self.gdb.interrupt() - self.gdb.command("p i=0"); - output = self.gdb.c() - self.assertIn("Continuing", output) - self.assertIn("Remote connection closed", output) - -class RegsTest(DeleteSpike): - def setUp(self): - self.binary = testlib.compile("regs.s") - self.spike = testlib.Spike(self.binary, halted=False) - self.gdb = testlib.Gdb() - self.gdb.command("file %s" % self.binary) - self.gdb.command("target extended-remote localhost:%d" % self.spike.port) - - def test_write_gprs(self): - # Note a0 is missing from this list since it's used to hold the - # address. - regs = ("ra", "sp", "gp", "tp", "t0", "t1", "t2", "fp", "s1", - "a1", "a2", "a3", "a4", "a5", "a6", "a7", "s2", "s3", "s4", - "s5", "s6", "s7", "s8", "s9", "s10", "s11", "t3", "t4", "t5", - "t6") - - self.gdb.command("p $pc=write_regs") - for i, r in enumerate(regs): - self.gdb.command("p $%s=%d" % (r, (0xdeadbeef<<i)+17)) - self.gdb.command("p $a0=data") - self.gdb.command("b all_done") - output = self.gdb.command("c") - self.assertIn("Breakpoint 1", output) - - # Just to get this data in the log. - self.gdb.command("x/30gx data") - self.gdb.command("info registers") - for n in range(len(regs)): - self.assertEqual(self.gdb.x("data+%d" % (8*n), 'g'), - (0xdeadbeef<<n)+17) - - def test_write_csrs(self): - # As much a test of gdb as of the simulator. - self.gdb.p("$mscratch=0") - self.gdb.stepi() - self.assertEqual(self.gdb.p("$mscratch"), 0) - self.gdb.p("$mscratch=123") - self.gdb.stepi() - self.assertEqual(self.gdb.p("$mscratch"), 123) - - self.gdb.command("p $fflags=9") - self.gdb.command("p $pc=write_regs") - self.gdb.command("p $a0=data") - self.gdb.command("b all_done") - self.gdb.command("c") - - self.assertEqual(9, self.gdb.p("$fflags")) - self.assertEqual(9, self.gdb.p("$x1")) - self.assertEqual(9, self.gdb.p("$csr1")) - -class DownloadTest(DeleteSpike): - def setUp(self): - length = 2**20 - fd = file("data.c", "w") - fd.write("#include <stdint.h>\n") - fd.write("uint32_t length = %d;\n" % length) - fd.write("uint8_t d[%d] = {\n" % length) - self.crc = 0 - for i in range(length / 16): - fd.write(" /* 0x%04x */ " % (i * 16)); - for _ in range(16): - value = random.randrange(1<<8) - fd.write("%d, " % value) - self.crc = binascii.crc32("%c" % value, self.crc) - fd.write("\n"); - fd.write("};\n"); - fd.write("uint8_t *data = &d[0];\n"); - fd.close() - - self.binary = testlib.compile("checksum.c", "data.c", "start.S", - "-mcmodel=medany", - "-T", "standalone.lds", - "-nostartfiles" - ) - self.spike = testlib.Spike(None, halted=True) - self.gdb = testlib.Gdb() - self.gdb.command("file %s" % self.binary) - self.gdb.command("target extended-remote localhost:%d" % self.spike.port) - - def test_download(self): - output = self.gdb.command("load") - self.assertNotIn("failed", output) - self.assertIn("Transfer rate", output) - self.gdb.command("b done") - self.gdb.c() - result = self.gdb.p("$a0") - self.assertEqual(self.crc, result) - -class MprvTest(DeleteSpike): - def setUp(self): - self.binary = testlib.compile("mprv.S", "-T", "standalone.lds", - "-nostartfiles") - self.spike = testlib.Spike(None, halted=True) - self.gdb = testlib.Gdb() - self.gdb.command("file %s" % self.binary) - self.gdb.command("target extended-remote localhost:%d" % self.spike.port) - self.gdb.command("load") - - def test_mprv(self): - """Test that the debugger can access memory when MPRV is set.""" - self.gdb.c(wait=False) - self.gdb.interrupt() - output = self.gdb.command("p/x *(int*)(((char*)&data)-0x80000000)") - self.assertIn("0xbead", output) - -if __name__ == '__main__': - # TROUBLESHOOTING TIPS - # If a particular test fails, run just that one test, eg.: - # ./tests/gdbserver.py MprvTest.test_mprv - # Then inspect gdb.log and spike.log to see what happened in more detail. - unittest.main() |