qemu-e2k/target
David Hildenbrand df192fbc51 s390x: Add floating-point extension facility to "qemu" cpu model
The floating-point extension facility implemented certain changes to
BFP, HFP and DFP instructions.

As we don't implement HFP/DFP, we can ignore those completely. Related
to BFP, the changes include
- SET BFP ROUNDING MODE (SRNMB) instruction
- BFP-rounding-mode field in the FPC register is changed to 3 bits
- CONVERT FROM LOGICAL instructions
- CONVERT TO LOGICAL instructions
- Changes (rounding mode + XxC) added to
-- CONVERT TO FIXED
-- CONVERT FROM FIXED
-- LOAD FP INTEGER
-- LOAD ROUNDED
-- DIVIDE TO INTEGER

For TCG, we don't implement DIVIDE TO INTEGER, and it is harder to
implement, so skip that. Also, as we don't implement PFPO, we can skip
changes to that as well. The other parts are now implemented, we can
indicate the facility.

z14 PoP mentions that "The floating-point extension facility is installed
in the z/Architecture architectural mode. When bit 37 is one, bit 42 is
also one.", meaning that the DFP (decimal-floating-point) facility also
has to be indicated. We can ignore that for now.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190218122710.23639-16-david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-03-04 11:49:31 +01:00
..
alpha avoid TABs in files that only contain a few 2019-01-11 15:46:56 +01:00
arm target/arm: Enable ARMv8.2-FHM for -cpu max 2019-02-28 11:03:05 +00:00
cris avoid TABs in files that only contain a few 2019-01-11 15:46:56 +01:00
hppa target/hppa: fix dcor instruction 2019-02-12 08:59:21 -08:00
i386 qapi: make query-cpu-definitions depend on specific targets 2019-02-18 14:44:05 +01:00
lm32
m68k target/m68k: Fix LGPL information in the file headers 2019-01-30 14:20:13 +01:00
microblaze target/microblaze: Add props enabling exceptions on failed bus accesses 2019-01-22 03:17:34 -08:00
mips target/mips: Preparing for adding MMI instructions 2019-02-27 14:26:14 +01:00
moxie target/moxie: Fix LGPL information in the file headers 2019-02-06 15:46:11 +01:00
nios2
openrisc target/openrisc: Fix LGPL version number 2019-01-30 11:01:36 +01:00
ppc target/ppc: Basic POWER9 bare-metal radix MMU support 2019-02-26 09:21:25 +11:00
riscv target/riscv: fix counter-enable checks in ctr() 2019-02-11 15:56:22 -08:00
s390x s390x: Add floating-point extension facility to "qemu" cpu model 2019-03-04 11:49:31 +01:00
sh4
sparc qdev-props: remove errp from GlobalProperty 2019-01-07 16:18:42 +04:00
tilegx avoid TABs in files that only contain a few 2019-01-11 15:46:56 +01:00
tricore target/tricore: Fix LGPL version number 2019-01-30 11:01:46 +01:00
unicore32 target/unicore32: remove tlb_flush from uc32_init_fn 2018-10-18 18:58:10 -07:00
xtensa target/xtensa: implement PREFCTL SR 2019-02-28 04:43:22 -08:00