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scripts/dump-guest-memory.py: fix int128_get64 on recent gcc

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The Int128 is no longer a struct, reaching a python exception:
Python Exception <class 'gdb.error'> Attempt to extract a component of a value that is not a (null).:

Replace struct access with a cast to uint64[] instead.

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1427466

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170310112819.16760-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-03-10 15:28:19 +04:00 committed by Paolo Bonzini
parent ca2edcd35c
commit 9b4b157ef6
1 changed files with 12 additions and 2 deletions
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10
scripts/dump-guest-memory.py
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@ -314,8 +314,18 @@ def get_arch_phdr(endianness, elfclass):
def int128_get64(val):
"""Returns low 64bit part of Int128 struct."""
try:
assert val["hi"] == 0
return val["lo"]
except gdb.error:
u64t = gdb.lookup_type('uint64_t').array(2)
u64 = val.cast(u64t)
if sys.byteorder == 'little':
assert u64[1] == 0
return u64[0]
else:
assert u64[0] == 0
return u64[1]
def qlist_foreach(head, field_str):