mirror of
https://github.com/cea-sec/miasm
synced 2026-06-21 13:48:18 +00:00
Fabrice Desclaux
68 lines
1.3 KiB
Python
68 lines
1.3 KiB
Python
from miasm2.core.cpu import parse_ast, ast_id2expr
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from miasm2.arch.x86.arch import mn_x86, base_expr
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from miasm2.core import parse_asm
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from miasm2.expression.expression import *
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from miasm2.core import asmbloc
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from miasm2.arch.x86.ira import ir_a_x86_32
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from pdb import pm
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def my_ast_int2expr(a):
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return ExprInt32(a)
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my_var_parser = parse_ast(ast_id2expr, my_ast_int2expr)
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base_expr.setParseAction(my_var_parser)
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# First, asm code
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blocs, symbol_pool = parse_asm.parse_txt(mn_x86, 32, '''
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main:
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MOV EAX, 1
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MOV EBX, 2
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MOV ECX, 2
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MOV DX, 2
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loop:
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INC EBX
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CMOVZ EAX, EBX
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ADD EAX, ECX
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JZ loop
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RET
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''')
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blocs = blocs[0]
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symbol_pool.set_offset(symbol_pool.getby_name("main"), 0x0)
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for b in blocs:
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print b
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print "symbols:"
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print symbol_pool
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resolved_b, patches = asmbloc.asm_resolve_final(mn_x86, blocs, symbol_pool)
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# Translate to IR
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ir_arch = ir_a_x86_32(symbol_pool)
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for b in blocs:
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print 'add bloc'
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print b
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ir_arch.add_bloc(b)
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# Display IR
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for lbl, b in ir_arch.blocs.items():
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print b
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# Dead propagation
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ir_arch.gen_graph()
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out = ir_arch.graph()
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open('graph.txt', 'w').write(out)
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print '*' * 80
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ir_arch.dead_simp()
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out2 = ir_arch.graph()
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open('graph2.txt', 'w').write(out2)
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# Display new IR
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print 'new ir blocs'
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for lbl, b in ir_arch.blocs.items():
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print b
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