H. Peter Anvin ab94fcf528 x86: allow "=rm" in native_save_fl() ...

This is a partial revert of f1f029c7bf.

"=rm" is allowed in this context, because "pop" is explicitly defined
to adjust the stack pointer *before* it evaluates its effective
address, if it has one.  Thus, we do end up writing to the correct
address even if we use an on-stack memory argument.

The original reporter for f1f029c7bf was
apparently using a broken x86 simulator.

[ Impact: performance ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Gabe Black <spamforgabe@umich.edu>

2009-08-25 16:47:16 -07:00

4.1 KiB

Raw Blame History

View Raw