diff options
| author | David Hildenbrand <david@redhat.com> | 2017-08-18 13:43:46 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2017-08-30 18:23:25 +0200 |
| commit | c07a1009669ebf7ed91b131a857eed6ea9a08115 (patch) | |
| tree | 4404da31e21db3792871f4a09253087e0bce5762 /target/s390x/mem_helper.c | |
| parent | 12e1e8f1aa3e79f408adadaaaff2148e56ba5068 (diff) | |
target/s390x: move psw_key_valid() to mem_helper.c
Only used in that file.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170818114353.13455-12-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target/s390x/mem_helper.c')
| -rw-r--r-- | target/s390x/mem_helper.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index c71dce4b1e..b91c7402c4 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -56,6 +56,17 @@ void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type, #define HELPER_LOG(x...) #endif +static inline bool psw_key_valid(CPUS390XState *env, uint8_t psw_key) +{ + uint16_t pkm = env->cregs[3] >> 16; + + if (env->psw.mask & PSW_MASK_PSTATE) { + /* PSW key has range 0..15, it is valid if the bit is 1 in the PKM */ + return pkm & (0x80 >> psw_key); + } + return true; +} + /* Reduce the length so that addr + len doesn't cross a page boundary. */ static inline uint32_t adj_len_to_page(uint32_t len, uint64_t addr) { |