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Merge pull request #1521 from ucgJhe/qdb

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Qdb bug fix missing function `handle_bnj_arm`
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xwings
2025-01-20 21:53:48 +08:00
committed by GitHub
parent 6c1d77c11b d0cd4eaddc
commit aa59bce166
1 changed files with 3 additions and 5 deletions
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qiling/debugger/qdb/branch_predictor/branch_predictor_arm.py
+3 -5
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@@ -40,13 +40,11 @@ class BranchPredictorARM(BranchPredictor, ArchARM):
bits & 0x80000000 != 0, # N, sign flag
)
def predict(self):
def predict(self, pref_addr=None):
prophecy = self.Prophecy()
cur_addr = self.cur_addr
cur_addr = self.cur_addr if pref_addr is None else pref_addr
line = self.disasm(cur_addr)
prophecy.where = cur_addr + line.size
if line.mnemonic == self.CODE_END: # indicates program exited
prophecy.where = True
return prophecy
@@ -160,7 +158,7 @@ class BranchPredictorARM(BranchPredictor, ArchARM):
next_addr = cur_addr + self.THUMB_INST_SIZE
for each in it_block_range:
_insn = self.read_insn(next_addr)
n2_addr = handle_bnj_arm(ql, next_addr)
n2_addr = self.predict(ql, next_addr)
if (cond_met and each == "t") or (not cond_met and each == "e"):
if n2_addr != (next_addr+len(_insn)): # branch detected