cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

test-sve-ioctl.py (2653B)

      1from __future__ import print_function
      2#
      3# Test the SVE ZReg reports the right amount of data. It uses the
      4# sve-ioctl test and examines the register data each time the
      5# __sve_ld_done breakpoint is hit.
      6#
      7# This is launched via tests/guest-debug/run-test.py
      8#
      9
     10import gdb
     11import sys
     12
     13initial_vlen = 0
     14failcount = 0
     15
     16def report(cond, msg):
     17    "Report success/fail of test"
     18    if cond:
     19        print ("PASS: %s" % (msg))
     20    else:
     21        print ("FAIL: %s" % (msg))
     22        global failcount
     23        failcount += 1
     24
     25class TestBreakpoint(gdb.Breakpoint):
     26    def __init__(self, sym_name="__sve_ld_done"):
     27        super(TestBreakpoint, self).__init__(sym_name)
     28        # self.sym, ok = gdb.lookup_symbol(sym_name)
     29
     30    def stop(self):
     31        val_i = gdb.parse_and_eval('i')
     32        global initial_vlen
     33        try:
     34            for i in range(0, int(val_i)):
     35                val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
     36                report(int(val_z) == i, "z0.b.u[%d] == %d" % (i, i))
     37            for i in range(i + 1, initial_vlen):
     38                val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
     39                report(int(val_z) == 0, "z0.b.u[%d] == 0" % (i))
     40        except gdb.error:
     41            report(False, "checking zregs (out of range)")
     42
     43        # Check the aliased V registers are set and GDB has correctly
     44        # created them for us having recognised and handled SVE.
     45        try:
     46            for i in range(0, 16):
     47                val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
     48                val_v = gdb.parse_and_eval("$v0.b.u[%d]" % i)
     49                report(int(val_z) == int(val_v),
     50                       "v0.b.u[%d] == z0.b.u[%d]" % (i, i))
     51        except gdb.error:
     52            report(False, "checking vregs (out of range)")
     53
     54
     55def run_test():
     56    "Run through the tests one by one"
     57
     58    print ("Setup breakpoint")
     59    bp = TestBreakpoint()
     60
     61    global initial_vlen
     62    vg = gdb.parse_and_eval("$vg")
     63    initial_vlen = int(vg) * 8
     64
     65    gdb.execute("c")
     66
     67#
     68# This runs as the script it sourced (via -x, via run-test.py)
     69#
     70try:
     71    inferior = gdb.selected_inferior()
     72    arch = inferior.architecture()
     73    report(arch.name() == "aarch64", "connected to aarch64")
     74except (gdb.error, AttributeError):
     75    print("SKIPPING (not connected)", file=sys.stderr)
     76    exit(0)
     77
     78try:
     79    # These are not very useful in scripts
     80    gdb.execute("set pagination off")
     81
     82    # Run the actual tests
     83    run_test()
     84except:
     85    print ("GDB Exception: %s" % (sys.exc_info()[0]))
     86    failcount += 1
     87    import code
     88    code.InteractiveConsole(locals=globals()).interact()
     89    raise
     90
     91print("All tests complete: %d failures" % failcount)
     92exit(failcount)