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Account for branch delay slot in depth map

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This commit is contained in:
Tim Becker 2015-08-16 18:09:54 -04:00
parent ae6116fe23
commit 1eeedd2eed
1 changed files with 14 additions and 2 deletions
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16
middleware/qira_analysis.py
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@ -424,6 +424,8 @@ def get_hacked_depth_map(flow, program):
return_stack = []
ret = [0]
last_clnum = None
branch_delay = False
for (address, length, clnum, ins) in flow:
# handing missing changes
if last_clnum != None and clnum != last_clnum+1:
@ -434,11 +436,21 @@ def get_hacked_depth_map(flow, program):
if address in return_stack:
return_stack = return_stack[:rindex(return_stack, address)]
# ugh, so gross
ret.append(len(return_stack))
if branch_delay:
ret.append(len(return_stack)-1)
branch_delay = False
else:
ret.append(len(return_stack))
instr = program.static[address]['instruction']
if instr.is_call():
return_stack.append(address+length)
if program.tregs[3][:4] == "mips":
# branch delay slot
branch_delay = True
ret_offset = length*2
else:
ret_offset = length
return_stack.append(address+ret_offset)
if (time.time() - start) > 0.01:
time.sleep(0.01)