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Add two utility functions to lldbutil.py:

Browse Source 
o int_to_bytearray()
o bytearray_to_int()

They return/interpret the bytearray in the little endian format.
For big endian, simply perform ba.reverse() on the bytearray object.

And modify TestProcessAPI.py to take advantage of the functions.

llvm-svn: 126813
This commit is contained in:
Johnny Chen
2011-03-02 01:36:45 +00:00
parent 7290868a1b
commit 43766d6f12
2 changed files with 70 additions and 13 deletions
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26
lldb/test/python_api/process/TestProcessAPI.py
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@@ -174,20 +174,18 @@ class ProcessAPITestCase(TestBase):
# OK, let's get the hex location of the variable.
location = int(val.GetLocation(frame), 16)
from lldbutil import int_to_bytearray, bytearray_to_int
byteSize = val.GetByteSize()
byteOrder = self.process.GetByteOrder()
bytes = bytearray(byteSize)
bytes = int_to_bytearray(256, byteSize)
byteOrder = self.process.GetByteOrder()
if byteOrder == lldb.eByteOrderBig:
# 256 in big endian => 0x00000100
# the second byte counted from the end is to be 0b00000001
bytes[-2] = 0b00000001
bytes.reverse()
elif byteOrder == lldb.eByteOrderLittle:
# 256 in little endian => 0x00010000
# the second byte counted from the start is to be 0b00000001
bytes[1] = 0b00000001
pass
else:
# Neither big endian nor little endian? Return for now.
# Add more logic here if we want to handle other types.
return
# The program logic makes the 'my_int' variable to have int type and value of 0.
@@ -211,12 +209,14 @@ class ProcessAPITestCase(TestBase):
if not error.Success():
self.fail("SBProcess.ReadMemory() failed")
new_bytes = bytearray(content, "ascii")
# The bytearray_to_int utility function expects a little endian bytearray.
if byteOrder == lldb.eByteOrderBig:
if new_bytes[-2] != 0b00000001:
self.fail("Memory content read from 'my_int' does not match (int)256")
elif byteOrder == lldb.eByteOrderLittle:
if new_bytes[1] != 0b00000001:
self.fail("Memory content read from 'my_int' does not match (int)256")
new_bytes.reverse()
new_value = bytearray_to_int(new_bytes, byteSize)
if new_value != 256:
self.fail("Memory content read from 'my_int' does not match (int)256")
# Dump the memory content....
for i in new_bytes: