+++ /dev/null
-#!/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()
projects / riscv-isa-sim.git / commitdiff