Model these off the aa64 read/write_vec_element functions.
Use it within translate-neon.c.inc. The new functions do
not allocate or free temps, so this rearranges the calling
code a bit.
Backports a712266f5d5a36d04b22fe69fa15592d62bed019
This function makes it clear that we're talking about the whole
register, and not the 32-bit piece at index 0. This fixes a bug
when running on a big-endian host.
Backports 015ee81a4c06b644969f621fd9965cc6372b879e
The VCMLA and VCADD insns have a size field which is 0 for fp16
and 1 for fp32 (note that this is the reverse of the Neon 3-same
encoding!). Convert it to MO_* values in decode for consistency.
Backports d186a4854c04e9832907b0b4240a47731da20993
Convert the insns using the 2reg_vcvt and 2reg_vcvt_f16 formats
to pass the size through to the trans function as a MO_* value
rather than the '0==f32, 1==f16' used in the fp 3-same encodings.
Backports commit 0ae715c658a02af1834b63563c56112a6d8842cb
In the Neon instructions, some instruction formats have a 2-bit size
field which corresponds exactly to QEMU's MO_8/16/32/64. However the
floating-point insns in the 3-same group have a 1-bit size field
which is "0 for 32-bit float and 1 for 16-bit float". Currently we
pass these values directly through to trans_ functions, which means
that when reading a particular trans_ function you need to know if
that insn uses a 2-bit size or a 1-bit size.
Move the handling of the 1-bit size to the decodetree file, so that
all these insns consistently pass a size to the trans_ function which
is an MO_8/16/32/64 value.
In this commit we switch over the insns using the 3same_fp and
3same_fp_q0 formats.
Backports commit 6cf0f240e0b980a877abed12d2995f740eae6515
Convert the Neon floating-point VMUL, VMLA and VMLS to use gvec,
and use this to implement fp16 support.
Backports fc8ae790311882afa3c7816df004daf978c40e9a
Convert the Neon VRINT-with-specified-rounding-mode insns to gvec,
and use this to implement the fp16 versions.
Backports 18725916b1438b54d6d6533980833d2251a20b7c
Convert the Neon VCVT with-specified-rounding-mode instructions
to gvec, and use this to implement fp16 support for them.
Backports ca88a6efdf4ce96b646a896059f9bd324c2cebc4
Convert the Neon VCVT float<->fixed-point insns to a
gvec style, in preparation for adding fp16 support.
Backports 7b959c5890deb9a6d71bc6800006a0eae0a84c60
Convert the Neon float-integer VCVT insns to gvec, and use this
to implement fp16 support for them.
Note that unlike the VFP int<->fp16 VCVT insns we converted
earlier and which convert to/from a 32-bit integer, these
Neon insns convert to/from 16-bit integers. So we can use
the existing vfp conversion helpers for the f32<->u32/i32
case but need to provide our own for f16<->u16/i16.
Backports 7782a9afec81d1efe23572135c1ed777691ccde5
Convert the Neon pairwise fp ops to use a single gvic-style
helper to do the full operation instead of one helper call
for each 32-bit part. This allows us to use the same
framework to implement the fp16.
Backports 1dc587ee9bfe804406eb3e0bacf47a80644d8abc
Convert the Neon VRSQRTS insn to using a gvec helper,
and use this to implement the fp16 case.
As with VRECPS, we adjust the phrasing of the new implementation
slightly so that the fp32 version parallels the fp16 one.
Backports 40fde72dda2da8d55b820fa6c5efd85814be2023
Convert the Neon VRECPS insn to using a gvec helper, and
use this to implement the fp16 case.
The phrasing of the new float32_recps_nf() is slightly different from
the old recps_f32() so that it parallels the f16 version; for f16 we
can't assume that flush-to-zero is always enabled.
Backports ac8c62c4e5a3f24e6d47f52ec1bfb20994caefa5
Convert the neon floating-point vector compare-vs-0 insns VCEQ0,
VCGT0, VCLE0, VCGE0 and VCLT0 to use a gvec helper, and use this to
implement the fp16 case.
Backport 635187aaa92f21ab001e2868e803b3c5460261ca
Convert the neon floating-point vector operations VFMA and VFMS
to use a gvec helper, and use this to implement the fp16 case.
This is the last use of do_3same_fp() so we can now delete
that function.
Backports commit cf722d75b329ef3f86b869e7e68cbfb1607b3bde
Convert the Neon floating-point VMLA and VMLS insns over to using a
gvec helper, and use this to implement the fp16 case.
Backports e5adc70665ecaf4009c2fb8d66775ea718a85abd
Convert the Neon floating point VMAXNM and VMINNM insns to
using a gvec helper and use this to implement the fp16 case.
Backports e22705bb941d82d6c2a09e8b2031084326902be3
Convert the Neon float-point VMAX and VMIN insns over to using
a gvec helper, and use this to implement the fp16 case.
Backport e43268c54b6cbcb197d179409df7126e81f8cd52
Convert the neon floating-point vector absolute comparison ops
VACGE and VACGT over to using a gvec hepler and use this to
implement the fp16 case.
Backports bb2741da186ebaebc7d5189372be4401e1ff9972
Convert the Neon floating-point vector comparison ops VCEQ,
VCGE and VCGT over to using a gvec helper and use this to
implement the fp16 case.
(We put the float16_ceq() etc functions above the DO_2OP()
macro definition because later when we convert the
compare-against-zero instructions we'll want their
definitions to be visible at that point in the source file.)
Backports ad505db233b89b7fd4b5a98b6f0e8ac8d05b11db
Rewrite Neon VABS/VNEG of floats to use gvec logical AND and XOR, so
that we can implement the fp16 version of the insns.
Backport 2b70d8cd09f5450c15788acd24f6f8bc4116c395
We already have gvec helpers for floating point VRECPE and
VRQSRTE, so convert the Neon decoder to use them and
add the fp16 support.
Backports 4a15d9a3b39d4d161d7e03dfcf52e9f214eef0b8
Implement FP16 support for the Neon insns which use the DO_3S_FP_GVEC
macro: VADD, VSUB, VABD, VMUL.
For VABD this requires us to implement a new gvec_fabd_h helper
using the machinery we have already for the other helpers.
Backport e4a6d4a69e239becfd83bdcd996476e7b8e1138d
When we implemented the VCMLA and VCADD insns we put in the
code to handle fp16, but left it using the standard fp status
flags. Correct them to use FPST_STD_F16 for fp16 operations.
Bacports commit b34aa5129e9c3aff890b4f4bcc84962e94185629
Make A32/T32 code use the new fpstatus_ptr() API:
get_fpstatus_ptr(0) -> fpstatus_ptr(FPST_FPCR)
get_fpstatus_ptr(1) -> fpstatus_ptr(FPST_STD)
Backports a84d1d1316726704edd2617b2c30c921d98a8137
The functions neon_element_offset(), neon_load_element(),
neon_load_element64(), neon_store_element() and
neon_store_element64() are used only in the translate-neon.inc.c
file, so move their definitions there.
Since the .inc.c file is #included in translate.c this doesn't make
much difference currently, but it's a more logical place to put the
functions and it might be helpful if we ever decide to try to make
the .inc.c files genuinely separate compilation units.
Backports commit 6fb5787898aab6aa04887fed9cf3220dd4c3f36a from qemu
Convert the Neon VTRN insn to decodetree. This is the last insn in the
Neon data-processing group, so we can remove all the now-unused old
decoder framework.
It's possible that there's a more efficient implementation of
VTRN, but for this conversion we just copy the existing approach.
Backports commit d4366190f84fe89cc5d46da995dac1e7d541b98e from qemu
Convert the Neon VSWP insn to decodetree. Since the new implementation
doesn't have to share a pass-loop with the other 2-reg-misc operations
we can implement the swap with 64-bit accesses rather than 32-bits
(which brings us into line with the pseudocode and is more efficient).
Backports commit 8ab3a227a0f13f0ff85846f36f7c466769aef4fc from qemu
Convert the Neon 2-reg-misc VRINT insns to decodetree.
Giving these insns their own do_vrint() function allows us
to change the rounding mode just once at the start and end
rather than doing it for every element in the vector.
Backports commit 128123ea34e9e6afe4842aefcb9cf84b9642ac22 from qemu
Convert the Neon 2-reg-misc insns which are implemented with
simple calls to functions that take the input, output and
fpstatus pointer.
Backports commit 3e96b205286dfb8bbf363229709e4f8648fce379 from qemu
Convert the Neon VQABS and VQNEG insns to decodetree.
Since these are the only ones which need cpu_env passing to
the helper, we wrap the helper rather than creating a whole
new do_2misc_env() function.
Backports commit 4936f38abe6db0a9d23fd04e4cb0cf4d51cff174 from qemu
Convert the remaining ops in the Neon 2-reg-misc group which
can be implemented simply with our do_2misc() helper.
Backports commit 84eae770af69c37a92496a4c4248875c070d5ee3 from qemu
Make gen_swap_half() take a source and destination TCGv_i32 rather
than modifying the input TCGv_i32; we're going to want to be able to
use it with the more flexible function signature, and this also
brings it into line with other functions like gen_rev16() and
gen_revsh().
Backports commit 8ec3de7018a8198624aae49eef5568256114a829 from qemu
All the other typedefs like these spell "Op" with a lowercase 'p';
remane the NeonGenTwoSingleOPFn and NeonGenTwoDoubleOPFn typedefs to
match.
Backports commit 5de3fd045be11b74cd0fbf36c6d4fb8387d5463b from qemu
Convert to decodetree the insns in the Neon 2-reg-misc grouping which
we implement using gvec.
Backports commit 75153179e9928775d5333243ea4b278f438d75ae from qemu
Convert the Neon insns in the 2-reg-misc group which are
VCVT between f32 and f16 to decodetree.
Backports commit 654a517355e249435505ae5ff14a7520410cf7a4 from qemu
Convert the Neon narrowing moves VMQNV, VQMOVN, VQMOVUN in the 2-reg-misc
group to decodetree.
Backports commit 3882bdacb0ad548864b9f2582a32bb5c785e3165 from qemu
Convert the pairwise ops VPADDL and VPADAL in the 2-reg-misc grouping
to decodetree.
At this point we can get rid of the weird CPU_V001 #define that was
used to avoid having to explicitly list all the arguments being
passed to some TCG gen/helper functions.
Backports commit 6106af3aa2304fccee91a3a90138352b0c2af998 from qemu
Convert the Neon VDUP (scalar) insn to decodetree. (Note that we
can't call this just "VDUP" as we used that already in vfp.decode for
the "VDUP (general purpose register" insn.)
Backports commit 9aaa23c2ae18e6fb9a291b81baf91341db76dfa0 from qemu
Convert the Neon VTBL, VTBX instructions to decodetree. The actual
implementation of the insn is copied across to the new trans function
unchanged except for renaming 'tmp5' to 'tmp4'.
Backports commit 54e96c744b70a5d19f14b212a579dd3be8fcaad9 from qemu
