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

sha1.py (2256B)

      1from __future__ import print_function
      2#
      3# A very simple smoke test for debugging the SHA1 userspace test on
      4# each target.
      5#
      6# This is launched via tests/guest-debug/run-test.py
      7#
      8
      9import gdb
     10import sys
     11
     12initial_vlen = 0
     13failcount = 0
     14
     15def report(cond, msg):
     16    "Report success/fail of test"
     17    if cond:
     18        print("PASS: %s" % (msg))
     19    else:
     20        print("FAIL: %s" % (msg))
     21        global failcount
     22        failcount += 1
     23
     24def check_break(sym_name):
     25    "Setup breakpoint, continue and check we stopped."
     26    sym, ok = gdb.lookup_symbol(sym_name)
     27    bp = gdb.Breakpoint(sym_name)
     28
     29    gdb.execute("c")
     30
     31    # hopefully we came back
     32    end_pc = gdb.parse_and_eval('$pc')
     33    report(bp.hit_count == 1,
     34           "break @ %s (%s %d hits)" % (end_pc, sym.value(), bp.hit_count))
     35
     36    bp.delete()
     37
     38def run_test():
     39    "Run through the tests one by one"
     40
     41    check_break("SHA1Init")
     42
     43    # Check step and inspect values. We do a double next after the
     44    # breakpoint as depending on the version of gdb we may step the
     45    # preamble and not the first actual line of source.
     46    gdb.execute("next")
     47    gdb.execute("next")
     48    val_ctx = gdb.parse_and_eval("context->state[0]")
     49    exp_ctx = 0x67452301
     50    report(int(val_ctx) == exp_ctx, "context->state[0] == %x" % exp_ctx);
     51
     52    gdb.execute("next")
     53    val_ctx = gdb.parse_and_eval("context->state[1]")
     54    exp_ctx = 0xEFCDAB89
     55    report(int(val_ctx) == exp_ctx, "context->state[1] == %x" % exp_ctx);
     56
     57    # finally check we don't barf inspecting registers
     58    gdb.execute("info registers")
     59
     60#
     61# This runs as the script it sourced (via -x, via run-test.py)
     62#
     63try:
     64    inferior = gdb.selected_inferior()
     65    arch = inferior.architecture()
     66    print("ATTACHED: %s" % arch.name())
     67except (gdb.error, AttributeError):
     68    print("SKIPPING (not connected)", file=sys.stderr)
     69    exit(0)
     70
     71if gdb.parse_and_eval('$pc') == 0:
     72    print("SKIP: PC not set")
     73    exit(0)
     74
     75try:
     76    # These are not very useful in scripts
     77    gdb.execute("set pagination off")
     78    gdb.execute("set confirm off")
     79
     80    # Run the actual tests
     81    run_test()
     82except (gdb.error):
     83    print ("GDB Exception: %s" % (sys.exc_info()[0]))
     84    failcount += 1
     85    pass
     86
     87print("All tests complete: %d failures" % failcount)
     88exit(failcount)