jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
scripts/qemugdb/mtree.py: fix up mtree dump
Since QEMU has been able to build with native Int128 support this was
broken as it attempts to fish values out of the non-existent
structure. Also the alias print was trying to make a %x out of
gdb.ValueType directly which didn't seem to work.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
+10
-2
+10
-2
scripts/qemugdb/mtree.py
+10
-2
scripts/qemugdb/mtree.py
···
21
21
return ptr == gdb.Value(0).cast(ptr.type)
22
22
23
23
def int128(p):
24
-
return int(p['lo']) + (int(p['hi']) << 64)
24
+
'''Read an Int128 type to a python integer.
25
+
26
+
QEMU can be built with native Int128 support so we need to detect
27
+
if the value is a structure or the native type.
28
+
'''
29
+
if p.type.code == gdb.TYPE_CODE_STRUCT:
30
+
return int(p['lo']) + (int(p['hi']) << 64)
31
+
else:
32
+
return int(("%s" % p), 16)
25
33
26
34
class MtreeCommand(gdb.Command):
27
35
'''Display the memory tree hierarchy'''
···
69
77
gdb.write('%s alias: %s@%016x (@ %s)\n' %
70
78
(' ' * level,
71
79
alias['name'].string(),
72
-
ptr['alias_offset'],
80
+
int(ptr['alias_offset']),
73
81
alias,
74
82
),
75
83
gdb.STDOUT)