diff options
| author | Richard Henderson <rth@twiddle.net> | 2017-05-21 09:50:00 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-06 14:34:32 -0700 |
| commit | 303c681a8f50eb88fbafc2bf6a7e4c5813ac2be0 (patch) | |
| tree | 73c0154cfb153d248aaa6a50db1dbd4e774c8495 /target/s390x/helper.c | |
| parent | 06fc03486cf9b825f8afd9defe80a255364ed02c (diff) | |
target/s390x: Implement EXECUTE via new TranslationBlock
Previously, helper_ex would construct the insn and then implement
the insn via direct calls other helpers. This was sufficient to
boot Linux but that is all.
It is easy enough to go the whole nine yards by stashing state for
EXECUTE within the cpu, and then rely on a new TB to be created
that properly and completely interprets the insn.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/s390x/helper.c')
| -rw-r--r-- | target/s390x/helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target/s390x/helper.c b/target/s390x/helper.c index 4f8aadf305..291db720fb 100644 --- a/target/s390x/helper.c +++ b/target/s390x/helper.c @@ -642,6 +642,11 @@ bool s390_cpu_exec_interrupt(CPUState *cs, int interrupt_request) S390CPU *cpu = S390_CPU(cs); CPUS390XState *env = &cpu->env; + if (env->ex_value) { + /* Execution of the target insn is indivisible from + the parent EXECUTE insn. */ + return false; + } if (env->psw.mask & PSW_MASK_EXT) { s390_cpu_do_interrupt(cs); return true; |