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/helper.h | |
| 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/helper.h')
| -rw-r--r-- | target/s390x/helper.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 69249a5249..b268367e92 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -105,6 +105,7 @@ DEF_HELPER_FLAGS_1(stfl, TCG_CALL_NO_RWG, void, env) DEF_HELPER_2(stfle, i32, env, i64) DEF_HELPER_FLAGS_2(lpq, TCG_CALL_NO_WG, i64, env, i64) DEF_HELPER_FLAGS_4(stpq, TCG_CALL_NO_WG, void, env, i64, i64, i64) +DEF_HELPER_4(mvcos, i32, env, i64, i64, i64) #ifndef CONFIG_USER_ONLY DEF_HELPER_3(servc, i32, env, i64, i64) |