diff options
| author | Willy Tarreau <w@1wt.eu> | 2021-10-24 19:28:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 09:19:27 +0100 |
| commit | 2e83886c042080259f0e09733a4fd4b74288b68c (patch) | |
| tree | 3fc72f65b1df1c91701c0ef45fb581f302630545 /drivers | |
| parent | aca2988eddb9be0faa3f4c67dc7b4a59397541f4 (diff) | |
tools/nolibc: i386: fix initial stack alignment
commit ebbe0d8a449d183fa43b42d84fcb248e25303985 upstream.
After re-checking in the spec and comparing stack offsets with glibc,
The last pushed argument must be 16-byte aligned (i.e. aligned before the
call) so that in the callee esp+4 is multiple of 16, so the principle is
the 32-bit equivalent to what Ammar fixed for x86_64. It's possible that
32-bit code using SSE2 or MMX could have been affected. In addition the
frame pointer ought to be zero at the deepest level.
Link: https://gitlab.com/x86-psABIs/i386-ABI/-/wikis/Intel386-psABI
Cc: Ammar Faizi <ammar.faizi@students.amikom.ac.id>
Cc: stable@vger.kernel.org
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions