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| author | Ajax <commial@gmail.com> | 2017-07-21 18:59:33 +0200 |
|---|---|---|
| committer | Ajax <commial@gmail.com> | 2017-07-21 18:59:33 +0200 |
| commit | d1d3fdf6904b800f2864a3c364054ad4ff841463 (patch) | |
| tree | 10df015ae407821b0a544c9c2839992ad4b6bba3 | |
| parent | 4dfca940e75ad8af65b69dd9bab9ff503141984b (diff) | |
| download | miasm-d1d3fdf6904b800f2864a3c364054ad4ff841463.tar.gz miasm-d1d3fdf6904b800f2864a3c364054ad4ff841463.zip | |
Aarch64: mask ROR/ROL result to avoid overflow
Diffstat (limited to '')
| -rw-r--r-- | miasm2/arch/aarch64/arch.py | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/miasm2/arch/aarch64/arch.py b/miasm2/arch/aarch64/arch.py index 7c8f22ef..fc481698 100644 --- a/miasm2/arch/aarch64/arch.py +++ b/miasm2/arch/aarch64/arch.py @@ -1066,11 +1066,13 @@ class aarch64_gpreg_sftimm(reg_noarg, m_arg): def ror(value, amount, size): - return (value >> amount) | (value << (size - amount)) + mask = (1 << size) - 1 + return ((value >> amount) | (value << (size - amount))) & mask def rol(value, amount, size): - return (value << amount) | (value >> (size - amount)) + mask = (1 << size) - 1 + return ((value << amount) | (value >> (size - amount)) & mask) UINTS = {32: uint32, 64: uint64} |