diff options
| author | David Hildenbrand <david@redhat.com> | 2017-09-27 19:00:27 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2017-10-06 10:53:02 +0200 |
| commit | 86b5ab390992fd57f3a23764994a7e082bcc2fc4 (patch) | |
| tree | 1570306d38b7d38701b8dd5884f725c6d23fc544 /target | |
| parent | f42dc44a1481949e900cd50846a42c60d756758e (diff) | |
s390x/tcg: make STFL store into the lowcore
Using virtual memory access is wrong and will soon include low-address
protection checks, which is to be bypassed for STFL.
STFL is a privileged instruction and using LowCore requires
!CONFIG_USER_ONLY, so add the ifdef and move the declaration to the
right place.
This was originally part of a bigger STFL(E) refactoring.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170927170027.8539-4-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/helper.h | 2 | ||||
| -rw-r--r-- | target/s390x/misc_helper.c | 7 |
2 files changed, 7 insertions, 2 deletions
diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 75ba04fc15..52c2963baa 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -104,7 +104,6 @@ DEF_HELPER_FLAGS_5(calc_cc, TCG_CALL_NO_RWG_SE, i32, env, i32, i64, i64, i64) DEF_HELPER_FLAGS_2(sfpc, TCG_CALL_NO_RWG, void, env, i64) DEF_HELPER_FLAGS_2(sfas, TCG_CALL_NO_WG, void, env, i64) DEF_HELPER_FLAGS_1(popcnt, TCG_CALL_NO_RWG_SE, i64, i64) -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) @@ -153,6 +152,7 @@ DEF_HELPER_FLAGS_3(sturg, TCG_CALL_NO_WG, void, env, i64, i64) DEF_HELPER_1(per_check_exception, void, env) DEF_HELPER_FLAGS_3(per_branch, TCG_CALL_NO_RWG, void, env, i64, i64) DEF_HELPER_FLAGS_2(per_ifetch, TCG_CALL_NO_RWG, void, env, i64) +DEF_HELPER_FLAGS_1(stfl, TCG_CALL_NO_RWG, void, env) DEF_HELPER_2(xsch, void, env, i64) DEF_HELPER_2(csch, void, env, i64) diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 293fc8428a..0b93381188 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -541,13 +541,18 @@ static unsigned do_stfle(CPUS390XState *env, uint64_t words[MAX_STFL_WORDS]) return max_bit / 64; } +#ifndef CONFIG_USER_ONLY void HELPER(stfl)(CPUS390XState *env) { uint64_t words[MAX_STFL_WORDS]; + LowCore *lowcore; + lowcore = cpu_map_lowcore(env); do_stfle(env, words); - cpu_stl_data(env, 200, words[0] >> 32); + lowcore->stfl_fac_list = cpu_to_be32(words[0] >> 32); + cpu_unmap_lowcore(lowcore); } +#endif uint32_t HELPER(stfle)(CPUS390XState *env, uint64_t addr) { |