diff options
| author | Thomas Huth <thuth@redhat.com> | 2022-12-05 13:58:52 +0100 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2022-12-15 15:02:34 +0100 |
| commit | 3ef473e52e5c3232ff1a93787d00ef400a7db4fc (patch) | |
| tree | 903caa7942f78d4d52e360be3315168389ca64ed /target/s390x/tcg/mem_helper.c | |
| parent | 5e275ca6fb32bcb4b56b29e6acfd3cf306c4a180 (diff) | |
target/s390x: The MVCP and MVCS instructions are not privileged
The "MOVE TO PRIMARY/SECONDARY" instructions can also be called
from problem state. We just should properly check whether the
secondary-space access key is valid here, too, and inject a
privileged program exception if it is invalid.
Message-Id: <20221205125852.81848-1-thuth@redhat.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target/s390x/tcg/mem_helper.c')
| -rw-r--r-- | target/s390x/tcg/mem_helper.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/target/s390x/tcg/mem_helper.c b/target/s390x/tcg/mem_helper.c index 006b6798a7..cb82cd1c1d 100644 --- a/target/s390x/tcg/mem_helper.c +++ b/target/s390x/tcg/mem_helper.c @@ -2295,7 +2295,8 @@ uint32_t HELPER(rrbe)(CPUS390XState *env, uint64_t r2) return re >> 1; } -uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) +uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2, + uint64_t key) { const uint8_t psw_as = (env->psw.mask & PSW_MASK_ASC) >> PSW_SHIFT_ASC; S390Access srca, desta; @@ -2310,6 +2311,10 @@ uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) s390_program_interrupt(env, PGM_SPECIAL_OP, ra); } + if (!psw_key_valid(env, (key >> 4) & 0xf)) { + s390_program_interrupt(env, PGM_PRIVILEGED, ra); + } + l = wrap_length32(env, l); if (l > 256) { /* max 256 */ @@ -2319,14 +2324,14 @@ uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) return cc; } - /* TODO: Access key handling */ srca = access_prepare(env, a2, l, MMU_DATA_LOAD, MMU_PRIMARY_IDX, ra); desta = access_prepare(env, a1, l, MMU_DATA_STORE, MMU_SECONDARY_IDX, ra); access_memmove(env, &desta, &srca, ra); return cc; } -uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) +uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2, + uint64_t key) { const uint8_t psw_as = (env->psw.mask & PSW_MASK_ASC) >> PSW_SHIFT_ASC; S390Access srca, desta; @@ -2341,6 +2346,10 @@ uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) s390_program_interrupt(env, PGM_SPECIAL_OP, ra); } + if (!psw_key_valid(env, (key >> 4) & 0xf)) { + s390_program_interrupt(env, PGM_PRIVILEGED, ra); + } + l = wrap_length32(env, l); if (l > 256) { /* max 256 */ @@ -2350,7 +2359,6 @@ uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) return cc; } - /* TODO: Access key handling */ srca = access_prepare(env, a2, l, MMU_DATA_LOAD, MMU_SECONDARY_IDX, ra); desta = access_prepare(env, a1, l, MMU_DATA_STORE, MMU_PRIMARY_IDX, ra); access_memmove(env, &desta, &srca, ra); |