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Fix context saving (#1335)

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* Fix context size

* Make UcContext convertible to bytes and picklable

Fix when updaing context

* Test context pickling

* Fix double free when the context is pickled from bytes
This commit is contained in:
lazymio
2020-09-24 00:53:23 +08:00
committed by GitHub
parent 21235916b9
commit 4441394258
3 changed files with 39 additions and 9 deletions
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8
bindings/python/sample_x86.py
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@ -4,7 +4,7 @@
from __future__ import print_function
from unicorn import *
from unicorn.x86_const import *
import pickle
X86_CODE32 = b"\x41\x4a\x66\x0f\xef\xc1" # INC ecx; DEC edx; PXOR xmm0, xmm1
X86_CODE32_LOOP = b"\x41\x4a\xeb\xfe" # INC ecx; DEC edx; JMP self-loop
@ -453,11 +453,17 @@ def test_i386_context_save():
print(">>> Saving CPU context")
saved_context = mu.context_save()
print(">>> Pickling CPU context")
pickled_saved_context = pickle.dumps(saved_context)
print(">>> Running emulation for the second time")
mu.emu_start(address, address+1)
print(">>> Emulation done. Below is the CPU context")
print(">>> EAX = 0x%x" %(mu.reg_read(UC_X86_REG_EAX)))
print(">>> Unpickling CPU context")
saved_context = pickle.loads(pickled_saved_context)
print(">>> CPU context restored. Below is the CPU context")
mu.context_restore(saved_context)
print(">>> EAX = 0x%x" %(mu.reg_read(UC_X86_REG_EAX)))