https://bugs.kde.org/show_bug.cgi?id=432809
Mark Wielaard <m...@klomp.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REPORTED |CONFIRMED
Ever confirmed|0 |1
--- Comment #3 from Mark Wielaard <m...@klomp.org> ---
I checked. PUSH and POP do always upgrade sz == 4 to sz = 8 but allow sz == 8
too. PUSHF actually has a note about having seen a dedundant REX prefix:
case 0x9C: /* PUSHF */ {
/* Note. There is no encoding for a 32-bit pushf in 64-bit
mode. So sz==4 actually means sz==8. */
/* 24 July 06: has also been seen with a redundant REX prefix,
so must also allow sz==8. */
We don't handle sz == 8 for LEAVE. But reading the instruction manual that
seems tricky since it has to match the size operand of the corresponding ENTER
(where we also don't handle sz == 8).
In summary, I think the patch is correct.
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