Because these are being included across subdir boundaries, the name
"decode" is potentially pretty overloaded. Instead, prefix them with
"isaspec_". Also, since they're both weird includes now and not really
complete files in their own right, give them a descriptive suffix.
Acked-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20525>
The way the isaspec decoder used to work was that it would generate a
header and a C file, each with ISA-specific stuff in it. Then that would
get built together with a stand-alone decode.c file which lives in the
isaspec folder, not the driver's folder. In order for decode.c to find
the ISA-specific headers, it would also generate a glue header which had
to be named isaspec-isa.h. This effectively meant that you can't have
multiple isaspec definitions in the same folder.
To solve this, we make do it the other way around and make the generated
header and C files include the stand-alone files. This is a bit awkward
because it means including a C file from another C file but it's better
for the build system.
Acked-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20525>
This also cleans up some of our python script execution conventions and
handles mako errors better. Copied a bit from vk_entrypoints_gen.py.
Acked-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20525>
We really shouldn't rely on these being global variables. Pass them
along instead.
Acked-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20525>
Without this change a fieldname like '{DST::align=12}' was not used for
encoding. Change the regex to include such fieldnames and remove the fieldname
property in a later step.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20462>
The implementation of isa_decode(..) is already part of isaspec. So lets
move the function declaration and some related structs to a src/isaspec.
Also make the header C++ safe.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18403>
Currently uint64_t_to_bitmask(..) is used in combination with
the pattern 'match'. This only works for values smaller then
64 bit. Add support for bigger isa sizes.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16996>
util_cpu_detect is an anti-pattern: it relies on callers high up in the call
chain initializing a local implementation detail. As a real example, I added:
...a Mali compiler unit test
...that called bi_imm_f16() to construct an FP16 immediate
...that calls _mesa_float_to_half internally
...that calls util_get_cpu_caps internally, but only on x86_64!
...that relies on util_cpu_detect having been called before.
As a consequence, this unit test:
...crashes on x86_64 with USE_X86_64_ASM set
...passes on every other architecture
...works on my local arm64 workstation and on my test board
...failed CI which runs on x86_64
...needed to have a random util_cpu_detect() call sprinkled in.
This is a bad design decision. It pollutes the tree with magic, it causes
mysterious CI failures especially for non-x86_64 developers, and it is not
justified by a micro-optimization.
Instead, let's call util_cpu_detect directly from util_get_cpu_caps, avoiding
the footgun where it fails to be called. This cleans up Mesa's design,
simplifies the tree, and avoids a class of a (possibly platform-specific)
failures. To mitigate the added overhead, wrap it all in a (fast) atomic
load check and declare the whole thing as ATTRIBUTE_CONST so the
compiler will CSE calls to util_cpu_detect.
Co-authored-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15580>
This is necessary for some ops which have slightly different encoding on
a4xx/a5xx, but are otherwise identical. This helps keeping the compiler
from having to worry about these details and creating separate ops.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14789>
The minus sign has higher preference than shift:
>>> 1 << 32 - 1
2147483648
>>> (1 << 32) - 1
4294967295
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14789>
Make it possible to just do alignment handling without an
actual field to print.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14668>
Fix defect reported by Coverity Scan.
Structurally dead code (UNREACHABLE)
unreachable: This code cannot be reached: return val;.
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Rob Clark <robclark@freedesktop.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14350>
Add function prototypes for generated expr evaluators, to avoid a use-
before-declaration issue if an expression references a derived field.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13787>
We forgot to set this. It starts to matter in the next patch, otherwise
pre-pass to detect branch targets (needed for backwards jumps/branches)
will not work.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13300>
If an <override> overrides the definition of a field, don't emit
encoding for both the override's definition and the fallback. (See
"SAMP" in #cat5-src3). It is harmless currently, because (in this
case) it will just re-encode the low bits of "SAMP". But when we
start asserting on that the field being encoded fits in the allowed
number of bits, the re-encoding of the fallback field definition
will start triggering asserts.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13353>
bitset encoding tends to have a lot of duplication, for ex. many
instructions with the same encoding modulo the fixed pattern. Now that
encode_bitset is split out into it's own template, so that we can
capture the result, use a hash table to de-duplicate the bitset encoding
into "snippet" functions so that bitset cases with identical encoding
can re-use the same generated code.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13049>
In the next patch, we are going to want to be able to capture the result
of rendering the template as a py variable, which I don't think you can
do otherwise with a <%def>.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13049>
This helps to get a really nice and aligend disasm output.
Just use :align=X to define where in the line the field
should be printed.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11321>
To support field alignment we need to keep track of how much
data we have printed to our out FILE. This is a prep commit.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11321>
This commit moves isaspec out of freedreno into a more
generic new home - src/compiler/isaspec.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11321>
Amber
Mary
Jason Ekstrand
Christian Gmeiner
Ilia Mirkin
Emma Anholt
Vinson Lee
Rob Clark
Danylo Piliaiev