Change the CC handling to be more like TEST UNDER MASK, with val & mask.
This lets us handle ICMH much more like ICM.
Signed-off-by: Richard Henderson <rth@twiddle.net>
I'm resonably certain that the carry/borrow-out condition for both
helpers was incorrect, failing to take into account the carry-in.
Adding the new CC_OP codes also allows removing the awkward interface
we used for the slb helpers.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Use a new "retxl" member of CPUS290XState to return the "eXtra Low" part
of a 128-bit value. That said, this will get used when two independent
values need returning (e.g. quotient+remainder) as well.
At the same time, shuffle the elements of CPUS390XState to get this new
space from existing padding in the structure.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Make the user path more like the system path. Prepare for more kinds
of runtime exceptions. Rename ILC to ILEN to make it clear that we
want to pass around a full instruction length, rather than a "code"
that happens to be stored one bit left in a larger field.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Lots of duplicated code replaced with a couple of tables. We no longer
attempt to manually invert the logic operation: the comments now match
the code. In the fully general test, constant propagate (1 << (3 - cc))
into (8 >> cc).
The new function will be usable by non-branch insns as well.
Signed-off-by: Richard Henderson <rth@twiddle.net>
We were treating psw.mask as the 32-bit quantity it is in ESA mode.
In particular, the CC field was at the wrong place.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Yes, we're about to rewrite all of this, but having this unconditional
jump recompute cc_op is a large source of "false diff errors" when
trying to examine before and after dumps.
Signed-off-by: Richard Henderson <rth@twiddle.net>
DISAS_EXCP is exit via exception; we wanted DISAS_JUMP.
This matters when we start cleaning up the TB exit paths.
Signed-off-by: Richard Henderson <rth@twiddle.net>
At the same time, tidy other usages of tcg_gen_deposit_i64.
In some cases we can "type cast" rather than extend, and in
others we can allow tcg_gen_deposit_i64 itself to optimize
the HOST_LONG_BITS==32 case.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Pass around CPUArchState instead of using global cpu_single_env.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Acked-by: Richard Henderson <rth@twiddle.net>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
The blank lines inside the single dump make it difficult for the
eye to pick out the block. Worse, with interior newlines, but
no blank line following, the PSW line appears to belong to the
next dump block.
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This is already handled generically in cpu_exec.
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Richard Henderson