diff options
| author | David Hildenbrand <david@redhat.com> | 2017-06-14 15:38:19 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-23 08:40:46 -0700 |
| commit | 3e7e5e0bc10d32d7cc41d0a39113473a3abfc657 (patch) | |
| tree | d5385e9f8fdea4de9663176ddc0eb14298a6f2fa /target/s390x/insn-data.def | |
| parent | c8bd95377babc3bd60f86cb3e5b24e74097cf6a9 (diff) | |
target/s390x: implement mvcos instruction
This adds support for the MOVE WITH OPTIONAL SPECIFICATIONS (MVCOS)
instruction. Allow to enable it for the qemu cpu model using
qemu-system-s390x ... -cpu qemu,mvcos=on ...
This allows to boot linux kernel that uses it for uacccess.
We are missing (as for most other part) low address protection checks,
PSW key / storage key checks and support for AR-mode.
We fake an ADDRESSING exception when called from problem state (which
seems to rely on PSW key checks to be in place) and if AR-mode is used.
user mode will always see a PRIVILEDGED exception.
This patch is based on an original patch by Miroslav Benes (thanks!).
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170614133819.18480-3-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/s390x/insn-data.def')
| -rw-r--r-- | target/s390x/insn-data.def | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index d089707073..aa4c5b255c 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -590,6 +590,8 @@ C(0xb254, MVPG, RRE, Z, r1_o, r2_o, 0, 0, mvpg, 0) /* MOVE STRING */ C(0xb255, MVST, RRE, Z, r1_o, r2_o, 0, 0, mvst, 0) +/* MOVE WITH OPTIONAL SPECIFICATION */ + C(0xc800, MVCOS, SSF, MVCOS, la1, a2, 0, 0, mvcos, 0) /* MOVE WITH OFFSET */ /* Really format SS_b, but we pack both lengths into one argument for the helper call, so we might as well leave one 8-bit field. */ |