[llvm-bugs] [Bug 21640] X86 disassembler skips over some bytes

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Oct 12 02:57:52 PDT 2017


Andrew V. Tischenko <andrew.v.tischenko at gmail.com> changed:

           What    |Removed                     |Added
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #4 from Andrew V. Tischenko <andrew.v.tischenko at gmail.com> ---
I reopen the bug because we still have some issues here:

0x2e 0x89 0x1c
0x2e 0x66 0x89 0x1c
0x2e 0x67 0x89 0x1c
0x2e 0x67 0x66 0x89 0x1c

        movl    %ebx, %cs:(%esi,%ebp)
        movw    %bx, (%esi,%ebp)
        movl    %ebx, (%si)
        movw    %bx, %cs:(%si)

As you see 2 middle lines don't have prefix cs: but they should if I understand
correctly. I suppose it's because of revert of D36788 but I see the same
behaviour in D27262. I'll try to fix it there.

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