error in parsing opcodes with certain prefixes

[GoogleCodeExporter]

What steps will reproduce the problem?

from miasm.arch.ia32_arch import x86_mn
from miasm.core import parse_asm
from miasm.core import asmbloc
from elfesteem.pe_init import PE

e=PE()
s_text= e.SHList.add_section(name='.text',addr=0x1000,rawsize=0x1000)
t='''
entry_point:
                repz movsb
                ret
'''
all_bloc, symbol_pool = parse_asm.parse_txt(x86_mn,t)
symbol_pool.set_offset(symbol_pool.getby_name("entry_point"), 
e.rva2virt(s_text.addr))
resolved_b, patches = asmbloc.asm_resolve_final(x86_mn, all_bloc[0], 
symbol_pool)
for p in patches:
    e.virt[p] = patches[p]
e.Opthdr.AddressOfEntryPoint = 0x1000
open ('bug.exe','wb').write(str(e))



What is the expected output? What do you see instead?
Traceback (most recent call last):
  File "beta.py", line 13, in <module>
    all_bloc, symbol_pool = parse_asm.parse_txt(x86_mn,t)
  File "/usr/local/lib/python2.7/dist-packages/miasm/core/parse_asm.py", line 164, in parse_txt
    c+=mnemo.prefix2hex(prefix)
  File "/usr/local/lib/python2.7/dist-packages/miasm/arch/ia32_arch.py", line 1397, in prefix2hex
    return reduce(lambda x,y:x+chr(y), prefix, "")
  File "/usr/local/lib/python2.7/dist-packages/miasm/arch/ia32_arch.py", line 1397, in <lambda>
    return reduce(lambda x,y:x+chr(y), prefix, "")
TypeError: an integer is required



Please provide any additional information below.
miasm/core/parse_asm.py
comment out line 164
 c+=mnemo.prefix2hex(prefix)
for a quick fix

Original issue reported on code.google.com by christos...@gmail.com on 17 Mar 2014 at 7:50

[GoogleCodeExporter]

Hi
The commit c9bbdcd3d9cc (major commit) should fix the issue.
Warning, API have changed, see example/asm_box_x86_32.py for API usage

Original comment by serpilli...@gmail.com on 7 Jun 2014 at 11:57