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| author | iximeow <me@iximeow.net> | 2021-07-03 13:42:30 -0700 |
|---|---|---|
| committer | iximeow <me@iximeow.net> | 2021-07-03 13:43:39 -0700 |
| commit | e02b7c2c5cfc5ff55f725b00039c8f81be8229f0 (patch) | |
| tree | 4eb37ddab0ebd6ef59b5cb9adb6c2023065068ef | |
| parent | b20147079dec8cdfcd70d23edccf1e1d08ecb962 (diff) | |
defer checking invalid lengths for multi-prefix instructions
this profiles slightly better? not entirely sure why...
| -rw-r--r-- | src/long_mode/mod.rs | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/long_mode/mod.rs b/src/long_mode/mod.rs index b75f354..8ed68fb 100644 --- a/src/long_mode/mod.rs +++ b/src/long_mode/mod.rs @@ -7024,9 +7024,6 @@ fn read_instr<T: Reader<<Arch as yaxpeax_arch::Arch>::Address, <Arch as yaxpeax_ break record; } else { let b = nextb; - if words.offset() >= 15 { - return Err(DecodeError::TooLong); - } if b == 0x0f { let b = words.next().ok().ok_or(DecodeError::ExhaustedInput)?; if b == 0x38 { @@ -7088,6 +7085,9 @@ fn read_instr<T: Reader<<Arch as yaxpeax_arch::Arch>::Address, <Arch as yaxpeax_ next_rec = unsafe { core::ptr::read_volatile(&OPCODES[nextb as usize]) }; + if words.offset() >= 15 { + return Err(DecodeError::TooLong); + } prefixes.rex_from(0); match b { 0x26 | |