This makes sure the language mode of the module is correctly propagated
through the WebAssembly module, so that exported functions are allocated
with the correct language mode. It extends the existing {ModuleOrigin}
enum to consist of three values now.
R=clemensh@chromium.org
TEST=mjsunit/regress/wasm/regress-985154
BUG=chromium:985154
Change-Id: Id7b566738b1e710cc5001b894022bcd0f2c01bc3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1708484
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62826}
v8memory.h does not have V8 specific definitions, and having it in base
makes it clear that every component may include the file. It also
ensures that including it does not create spurious dependencies on
v8_base.
Change-Id: I565f63b25f33a9ada19d7b2ac5990863ab17f4a7
Bug: v8:9183, v8:8855
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1657923
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62309}
This CL was generated by an automatic clang AST rewriter using this
matcher expression:
callExpr(
callee(
cxxMethodDecl(
hasName("operator->"),
ofClass(isSameOrDerivedFrom("v8::internal::Object"))
)
),
argumentCountIs(1)
)
The "->" at the expression location was then rewritten to ".".
R=jkummerow@chromium.orgTBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org
Bug: v8:9183, v8:3770
No-Try: true
No-Tree-Checks: true
Change-Id: I0a7ecabdeafe51d0cf427f5280af0c7cab96869e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624209
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61764}
Up until now, we cached export wrappers per export index. With the
anyref proposal potentially many more functions will need export
wrappers, e.g. any function that is stored in a table, and any
function accessed by the new ref.func instruction.
With this CL, we change the caching scheme an do the caching per
signature. Thereby we can guarantee that any export wrapper which
potentially exists can be stored in the cache.
For cctests which use wasm-run-utils, we don't know the size of the
cache anymore ahead of time. However, we assume that no more than
5 signatures will be used in any cctest. If this assumption is not
true, we can just adjust the number.
The cache is now accessed in all code paths where we need an export
wrapper.
Bug: chromium:962850
Change-Id: I32df60dfa7801d1e71f7d837da091f388198af1f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1615247
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61752}
GraphBuilderTester was introduced at a time where RawMachineAssembler
was going to be deprecated (https://codereview.chromium.org/1423923003/).
Now we know that it's not going to happen any time soon.
Since GraphBuilderTester it's only used in one test which can use
RawMachineAssembler, I updated it and removed the class.
Now the .h file had another class, which is now the only class in the file.
Therefore, I renamed it and updated the include calls to it.
Also updated the include commands: some were not necessary, and some others
could be moved to more aptly places.
Bug: v8:9183
Change-Id: I44bf16090c0515b1b9ff6cbded1bdb0adb4e44e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1594563
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61269}
The {code_table_} in {NativeModule} is protected by the
{allocation_mutex_}. The {code} and {code_table} accessors did not
acquire this lock though.
This CL removes the unsafe {code_table} accessor, renames {code} to
{GetCode} and protects it by a lock.
R=mstarzinger@chromium.org
Bug: v8:9112
Change-Id: Id2df68460b4c10291a49b4016b9574e02744e8b9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1561315
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60779}
This is a reland of 63608968b6
The previous CL failed on Windows, but it was a general bug. The
dropped_elem_segments was not being set on the instance properly in
cctests, so`table.init` instructions would fail by reading uninitialized
data.
I took this opportunity to also add an implementation of
`elem.drop` in the interpreter, and ported the JS tests for those too.
Original change's description:
> [wasm] Implement table.init for interpreter
>
> This also fixes CheckCallViaJS when a trap occurs. In that case, the
> trap callback is called instead of an exception being thrown, so if it
> isn't handled, a bogus result will be returned instead.
>
> Bug: v8:8965
> Change-Id: I560e89f353756df23c062fb8c9484d9971c19253
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1539078
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Ben Smith <binji@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60473}
Bug: v8:8965
Change-Id: Ia547d9530b7ca67fde5bd94539f49153b796e82d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1547142
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60664}
This CL adds all the necessary {WasmCodeRefScope}s in the code base, or
at least a good approximation. A follow-up CL will enable a check that
a {WasmCodeRefScope} exists whenever a pointer to a {WasmCode} object
is returned from the {NativeModule}. This should flush out any missing
scopes.
R=titzer@chromium.org
Bug: v8:8217
Change-Id: I54c7eb39aeb1acde38273c399396e6b1390a4cb2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1533860
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60566}
This reverts commit 63608968b6.
Reason for revert:
https://ci.chromium.org/p/v8/builders/ci/V8%20Win32%20-%20debug/19535
Original change's description:
> [wasm] Implement table.init for interpreter
>
> This also fixes CheckCallViaJS when a trap occurs. In that case, the
> trap callback is called instead of an exception being thrown, so if it
> isn't handled, a bogus result will be returned instead.
>
> Bug: v8:8965
> Change-Id: I560e89f353756df23c062fb8c9484d9971c19253
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1539078
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Ben Smith <binji@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60473}
TBR=binji@chromium.org,mstarzinger@chromium.org
Change-Id: Iee528ac2f16988b25579af3555e6f17974cb0b05
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8965
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1539498
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60474}
This also fixes CheckCallViaJS when a trap occurs. In that case, the
trap callback is called instead of an exception being thrown, so if it
isn't handled, a bogus result will be returned instead.
Bug: v8:8965
Change-Id: I560e89f353756df23c062fb8c9484d9971c19253
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1539078
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60473}
Most of the mjsunit/wasm/table-copy.js tests have been ported to
cctests, so they can be tested with all execution tiers.
Bug: v8:8965
Change-Id: I448719be30a4b2bddb9e2cffb4c74d3134db2f50
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529548
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60396}
When running wasm tests, the interpreter previously used a static
collection of function indexes stored in WasmTable to perform
call_indirect calls internal to that module. This has the wrong behavior
if the table is changed (via WasmTableObject::Set, `table.copy`, or
`table.init`).
This CL changes the cctests to always generate an intepreter entry for
all functions, and stores those entries in the dispatch table. This
allows us to use the same execution path as for non-testing code.
The interpreter entry compiler needed to be changed to support
multi-value returns too, since a 64-bit integer return value may be
lowered to two 32-bit integer returns.
Bug: v8:9016
Change-Id: I277df21ffde5c2eee0b691fcc9bab2b1a43eeffc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1531137
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60380}
WasmRunner provides CheckCallViaJS, which calls a wasm function through
JS and checks its result.
There are currently two overloads, one that takes a variable number of
arguments, and another more general 4-argument version that takes an
array of arguments. This means if you run code like:
r.CheckCallViaJS(0, 0, 0, 0);
The overload resolution kicks in, and chooses the general version, which
will always segfault.
This CL renames the general version to `CheckCallApplyViaJS` so the
above example will call the variable-argument version instead.
Change-Id: I14a742c467692e09e84f03504cec2306a794fc24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529990
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60345}
This CL only provides the implementation of memory.{init,copy,fill} and
data.drop.
Bug: v8:8965
Change-Id: I439f2520bfee8f147e4b0d1d31f954aaad2e14ad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1510575
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60253}
In some test-run-wasm-js cctests we want to call wasm code through the
js-to-wasm wrapper. This did not work if we wanted to run the wasm code
in the interpreter, because we never compiled a WasmInterpreterEntry,
and we did not patch the jump table.
With this CL we do both now.
R=clemensh@chromium.orgCC=fgm@chromium.org
Change-Id: I49971c5079053ed572928da7eab3e6ea3cb57c25
Reviewed-on: https://chromium-review.googlesource.com/c/1435941
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59170}
There is no linking stage any more, and all the {Link} method did was
to set the module to executable. Thus rename the method to reflect that.
R=ahaas@chromium.org
Bug: v8:8562
Change-Id: Ifc83b5cbbb1377312d7c318e50a0f9d1ede45aa6
Reviewed-on: https://chromium-review.googlesource.com/c/1439237
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59167}
Numeric conversions are defined behavior iff the value is in the
range of what the target type can represent.
Bug: v8:3770
Change-Id: Ic6f2276c64cb39345a45d8e37e604c28ecca34c2
Reviewed-on: https://chromium-review.googlesource.com/c/1436216
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59144}
This adds preliminary support for exception handling to the interpreter.
Note that due to missing reference type support, the exception object is
not yet correctly put onto the operand stack. Also exceptions raised by
call operations are not handled properly yet.
R=clemensh@chromium.org
TEST=cctest/test-run-wasm-exceptions
BUG=v8:8091
Change-Id: Ie68ca9448c7beafe8967dff5bb5de6642edcc9e4
Reviewed-on: https://chromium-review.googlesource.com/c/1436017
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59131}
C++ introduces the {alignas} keyword, which can be used with types or
integral constant expressions. Use this instead of the V8_ALIGNAS (for
types) or V8_ALIGNED (for integral constants) macros.
R=ulan@chromium.org
Bug: v8:8562
Change-Id: I54999b56a5715237f88c63d8543ef728a5b2eff5
Reviewed-on: https://chromium-review.googlesource.com/c/1379935
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58290}
This is a reland of f849396c3a
Original change's description:
> [nojit] Remove code stubs
>
> All stubs have been migrated to builtins. This CL removes most related
> code.
>
> Bug: v8:7777, v8:5784
> Change-Id: I4470cfef34788e6c8e0fd5fd09e40e250d088dad
> Reviewed-on: https://chromium-review.googlesource.com/c/1365284
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58093}
Tbr: mstarzinger@chromium.org,yangguo@chromium.org,jkummerow@chromium.org,bmeurer@chromium.org
Bug: v8:7777, v8:5784
Change-Id: I005ee2a820d49a75a90481d262a310e4ccfd1391
Reviewed-on: https://chromium-review.googlesource.com/c/1367746
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58101}
All stubs have been migrated to builtins. This CL removes most related
code.
Bug: v8:7777, v8:5784
Change-Id: I4470cfef34788e6c8e0fd5fd09e40e250d088dad
Reviewed-on: https://chromium-review.googlesource.com/c/1365284
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58093}
The relocation mode in question was by now only used in tests to model a
wrapper call from wrapper code (on the GC'ed heap) to a non-movable wasm
code object. Instead of using a special relocation mode, we switch to
using the existing {EXTERNAL_REFERENCE} mode similar to other static C++
functions called from generated code.
R=sigurds@chromium.org
BUG=v8:8238
Change-Id: I30af98b92aed207c52ccccaf018a455ecac39c2b
Reviewed-on: https://chromium-review.googlesource.com/c/1309821
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57239}
{ThreadInWasmScope} in only used in a single location, which is in a
test. It does not look like many more such places will show up.
R=titzer@chromium.org,
Bug: v8:8015
Change-Id: I89f6f7e2bd13e2882e65f7657d73ba59a6c71757
Reviewed-on: https://chromium-review.googlesource.com/1193446
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55486}
This CL introduces a set of configuration options implemented as
a struct of booleans that together comprise the set of enabled
or detected features. The configuration options replace command-line
flags that were checked deep in the implementation. As such, it is
necessary to plumb them through multiple levels of abstraction.
R=ahaas@chromium.orgCC=mstarzinger@chromium.org
BUG=chromium:868844
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I1b82f5826e4fd263f68e8cafcd923bac5818a637
Reviewed-on: https://chromium-review.googlesource.com/1163670
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55018}
The wasm/ directory is inconsistent in many places, often within the
same file. For all code that exists in a v8::internal::wasm namespace,
this CL removes any wasm:: qualifiers, which is especially helpful
since most types are already Wasm-named, such as WasmCode, WasmModule,
etc. Namespace qualifiers are redundant inside the wasm:: namespace and
thus go against the main point of using namespaces. Removing the
qualifiers for non Wasm-named classes also makes the code somewhat more
future-proof, should we move some things that are not really WASM-specific
(such as ErrorThrower and Decoder) into a higher namespace.
R=clemensh@chromium.org,mstarzinger@chromium.org
Change-Id: Ibff3e1e93c64c12dcb53c46c03d1bfb2fb0b7586
Reviewed-on: https://chromium-review.googlesource.com/1160232
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54862}
An unordered_map typically provides better performance. Instead of a
compare function, we now need a hash function and equality defined on
{Signature<T>}.
R=mstarzinger@chromium.org
Bug: chromium:862123
Change-Id: Iba71030f91949d7453740c884de1d8a4f921c618
Reviewed-on: https://chromium-review.googlesource.com/1131182
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54404}
Our tests currently don't set {WasmModule::num_declared_functions}
correctly. This CL fixes that.
This enables the use of {WasmModule::num_declared_functions} instead of
{NativeModule::num_functions_ - NativeModule::num_imported_functions_}.
Drive-by: Fix {std::vector} reservation to reserve enough space for all
functions during decoding.
R=titzer@chromium.org
Change-Id: I6d7783aed1c0de3275fc72787dec17c38ff8c73b
Reviewed-on: https://chromium-review.googlesource.com/1106166
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53857}
This is a reland of 733b7c8258.
The arm64 bug was fixed in https://crrev.com/c/1105051.
Original change's description:
> [wasm] Introduce jump table
>
> This introduces the concept of a jump table for WebAssembly, which is
> used for every direct and indirect call to any WebAssembly function.
> For lazy compilation, it will initially contain code to call the
> WasmCompileLazy builtin, where it passes the function index to be
> called.
> For non-lazy-compilation, it will contain a jump to the actual code.
> The jump table allows to easily redirect functions for lazy
> compilation, tier-up, debugging and (in the future) code aging. After
> this CL, we will not need to patch existing code any more for any of
> these operations.
>
> R=mstarzinger@chromium.org, titzer@chromium.org
>
> Bug: v8:7758
> Change-Id: I45f9983c2b06ae81bf5ce9847f4542fb48844a4f
> Reviewed-on: https://chromium-review.googlesource.com/1097075
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53805}
TBR=titzer@chromium.org,mstarzinger@chromium.org
Bug: v8:7758
Change-Id: I68555230c6db97e70f0b8fef784188f55ee04794
Reviewed-on: https://chromium-review.googlesource.com/1105158
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53829}
TurboFan returned null handles if compilation did not succeed. This CL
changes that to a MaybeHandle to make it explicit that client code needs
to handle the error.
Bug: v8:7856
Change-Id: I6087e6263faa1150b9788213dd22c398b4a2fc2d
Reviewed-on: https://chromium-review.googlesource.com/1104688
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53824}
This reverts commit 733b7c8258.
Reason for revert: breaks arm64 gc-stress: https://ci.chromium.org/buildbot/client.v8.ports/V8%20Linux%20-%20arm64%20-%20sim%20-%20gc%20stress/11659
Original change's description:
> [wasm] Introduce jump table
>
> This introduces the concept of a jump table for WebAssembly, which is
> used for every direct and indirect call to any WebAssembly function.
> For lazy compilation, it will initially contain code to call the
> WasmCompileLazy builtin, where it passes the function index to be
> called.
> For non-lazy-compilation, it will contain a jump to the actual code.
> The jump table allows to easily redirect functions for lazy
> compilation, tier-up, debugging and (in the future) code aging. After
> this CL, we will not need to patch existing code any more for any of
> these operations.
>
> R=mstarzinger@chromium.org, titzer@chromium.org
>
> Bug: v8:7758
> Change-Id: I45f9983c2b06ae81bf5ce9847f4542fb48844a4f
> Reviewed-on: https://chromium-review.googlesource.com/1097075
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53805}
TBR=mstarzinger@chromium.org,titzer@chromium.org,clemensh@chromium.org,sreten.kovacevic@mips.com
Change-Id: Iea358db2cf13656a65cf69a6d82cbbc10d3e7e1c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7758
Reviewed-on: https://chromium-review.googlesource.com/1105157
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53807}
This introduces the concept of a jump table for WebAssembly, which is
used for every direct and indirect call to any WebAssembly function.
For lazy compilation, it will initially contain code to call the
WasmCompileLazy builtin, where it passes the function index to be
called.
For non-lazy-compilation, it will contain a jump to the actual code.
The jump table allows to easily redirect functions for lazy
compilation, tier-up, debugging and (in the future) code aging. After
this CL, we will not need to patch existing code any more for any of
these operations.
R=mstarzinger@chromium.org, titzer@chromium.org
Bug: v8:7758
Change-Id: I45f9983c2b06ae81bf5ce9847f4542fb48844a4f
Reviewed-on: https://chromium-review.googlesource.com/1097075
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53805}
1) The code table never grows, so store it in a heap-allocated byte
array instead of an std::vector.
2) Rename {functions_count} to {num_functions} for consistency with
{num_imported_functions} and occurences in other data structures.
R=mstarzinger@chromium.org
Bug: v8:7754
Change-Id: Id9d66545ed7aa675d663dad5936a9ef6d44ace7d
Reviewed-on: https://chromium-review.googlesource.com/1066014
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53488}
This makes stack checks in WasmCode independent of the underlying
Isolate by loading the limit address from the WasmInstanceObject instead
of embedding it into the instruction stream. It hence removes the last
use of the Isolate field from WasmGraphBuilder.
Additionally this introduces the notion of a "runtime stub" which
represents stub code global to the NativeModule that can be directly
called from each WasmCode in the same module. These stubs can act as
trampolines via which Isolate-independent WasmCode can enter other V8
builtins or runtime functions that remain Isolate-dependent. They will
eventually replace the current "trampoline" in a NativeModule.
R=titzer@chromium.org
BUG=v8:7424
Change-Id: Ie1f5582ee656b1ab7716ea06316d6e21a0268e74
Reviewed-on: https://chromium-review.googlesource.com/1078732
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53487}
This makes the fact that export wrapper code is shared across instances
explicit by hanging the {export_wrappers} array off the module object
instead of the instance-specific {WasmCompiledModule} object.
R=titzer@chromium.org
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Ic5c73bcc17f759e520c105317361e5654628b99e
Reviewed-on: https://chromium-review.googlesource.com/1051987
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53131}
Define simple accessors in the header and give them lower case names.
R=mstarzinger@chromium.org
Bug: v8:7570
Change-Id: I2914013fdea2218189275bbaa9f98ea5de0ccd7c
Reviewed-on: https://chromium-review.googlesource.com/1046546
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53024}
