- 08 Nov, 2019 1 commit
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David Carlier authored
Using proper register (RIP) on this platform. Change-Id: Iaa0a25e328bd82c152db0ef3632523fd7d621020 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1857221Reviewed-by: Michael Achenbach <machenbach@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#64863}
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- 03 Jun, 2019 1 commit
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Yang Guo authored
R=rmcilroy@chromium.org NOPRESUBMIT=true Bug: v8:9247 Change-Id: I355ac92c323ab34e1898c0764856ebadc3357dcc Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1635691 Commit-Queue: Yang Guo <yangguo@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#61960}
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- 24 May, 2019 1 commit
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Yang Guo authored
TBR=mvstanton@chromium.org,neis@chromium.org,ahaas@chromium.org Bug: v8:9247 Change-Id: I5433c863a54f3412d73df0d38aba3fdbcfac7ebe Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627973 Commit-Queue: Yang Guo <yangguo@chromium.org> Auto-Submit: Yang Guo <yangguo@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#61830}
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- 15 Apr, 2019 1 commit
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Bill Ticehurst authored
Check if storage for thread_local variables has been allocated before attempting to access such variables, as exceptions may be raised in the thread before this initializion is complete, causing an infinite loop. Bug: v8:8966 Change-Id: Ifc6223b74999a55bfd0ed2d6ebf054bbffd7e809 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1507714 Commit-Queue: Ben Titzer <titzer@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Cr-Commit-Position: refs/heads/master@{#60852}
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- 29 Jan, 2019 1 commit
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Andreas Haas authored
In the trap handler we validate the list of registered code objects every time we register or de-register a new code object. The complexity of this validation is O(num-code-objects * num-instructions). For big WebAssembly modules with several hundred thousand code objects, this validation causes significant overhead (we saw up to 10x) and makes debugging very tedious. With this CL I mark the validation as slow. Thereby it is still enabled in most tests on our bots, but it is possible to disable validation when debugging large web applications. The referenced bug issue was created by developers who had problems with debugging because of this issue. R=mark@chromium.org Bug: v8:8536 Change-Id: If7ecb554eebcb04eb43a1f791b96c7a42a47e60f Reviewed-on: https://chromium-review.googlesource.com/c/1442634Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Commit-Queue: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#59181}
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- 04 Jan, 2019 1 commit
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Clemens Hammacher authored
This reverts commit 26a78061. Reason for revert: Not all fuzzers support custom segfault handlers yet, see https://crbug.com/918949 Original change's description: > Remove trap handler fallback for sanitizers > > Since https://crrev.com/c/1335572, our sanitizers allow to set custom > segfault handlers. Thus remove special code that was added to handle > sanitizers that prevent installation of segfault handlers. Instead, > CHECK that the signal handler was installed correctly. > > R=ahaas@chromium.org, mseaborn@chromium.org, mark@chromium.org > > Bug: chromium:830894 > Change-Id: I3bd66e33efdceb3e8469f3f4a09fbde90cb3d7ec > Reviewed-on: https://chromium-review.googlesource.com/c/1392199 > Reviewed-by: Andreas Haas <ahaas@chromium.org> > Commit-Queue: Clemens Hammacher <clemensh@chromium.org> > Cr-Commit-Position: refs/heads/master@{#58513} TBR=mseaborn@chromium.org,ahaas@chromium.org,mark@chromium.org,clemensh@chromium.org # Not skipping CQ checks because original CL landed > 1 day ago. Bug: chromium:830894, chromium:918949 Change-Id: Ide545860cf7729139ac50c0dd2e85facca49b0b1 Reviewed-on: https://chromium-review.googlesource.com/c/1396277Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#58556}
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- 03 Jan, 2019 1 commit
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Clemens Hammacher authored
Since https://crrev.com/c/1335572, our sanitizers allow to set custom segfault handlers. Thus remove special code that was added to handle sanitizers that prevent installation of segfault handlers. Instead, CHECK that the signal handler was installed correctly. R=ahaas@chromium.org, mseaborn@chromium.org, mark@chromium.org Bug: chromium:830894 Change-Id: I3bd66e33efdceb3e8469f3f4a09fbde90cb3d7ec Reviewed-on: https://chromium-review.googlesource.com/c/1392199Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#58513}
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- 30 Nov, 2018 1 commit
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Clemens Hammacher authored
Building on linux x64 with "is_component_build = true" currently fails with linker errors (undefined references). This CL fixes that. R=ahaas@chromium.org TBR=mseaborn@chromium.org,mark@chromium.org Bug: v8:8532 Change-Id: I6b32c00bd974a22268ad1f161ce06a9ebe47c805 Reviewed-on: https://chromium-review.googlesource.com/c/1356505Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#57960}
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- 29 Nov, 2018 1 commit
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Andreas Haas authored
The problem were missing V8_EXPORT_PRIVATE and V8_EXPORT. The unittests test if the trap handler only handles those traps it is supposed to handle: * Only handle traps when the thread-in-wasm flag is set. * Only handle traps of the right type, i.e. memory access violations. * Only handle traps at recorded instructions. The tests also test the consistency of the thread-in-wasm flag. I made one change in the trap handler where that consistency could be violated. All tests are executed with the default trap handler provided by V8, and with the trap handler callback installed in a test signal/exception handler. Patchset 1 is the original CL. R=mstarzinger@chromium.org Change-Id: I172d94f24cdba4c3a1f7f344825b059dbb59da79 Reviewed-on: https://chromium-review.googlesource.com/c/1351024Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Commit-Queue: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#57947}
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- 27 Nov, 2018 2 commits
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Clemens Hammacher authored
This reverts commit 4644b32e. Reason for revert: Link errors on win64: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Win64%20-%20debug/25950 Original change's description: > [wasm] Add more unit tests for trap handler > > The unittests test if the trap handler only handles those traps it > is supposed to handle: > * Only handle traps when the thread-in-wasm flag is set. > * Only handle traps of the right type, i.e. memory access violations. > * Only handle traps at recorded instructions. > > The tests also test the consistency of the thread-in-wasm flag. I made > one change in the trap handler where that consistency could be > violated. > > All tests are executed with the default trap handler provided by V8, > and with the trap handler callback installed in a test signal/exception > handler. > > Change-Id: I03904bb6effd2e8694d3f4d1fbf62bc38002646e > Reviewed-on: https://chromium-review.googlesource.com/c/1340246 > Commit-Queue: Andreas Haas <ahaas@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Cr-Commit-Position: refs/heads/master@{#57858} TBR=mstarzinger@chromium.org,ahaas@chromium.org,mark@chromium.org Change-Id: Iac2f20c73744226885ea1810813863a21c5faf8c No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/1351021Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#57861}
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Andreas Haas authored
The unittests test if the trap handler only handles those traps it is supposed to handle: * Only handle traps when the thread-in-wasm flag is set. * Only handle traps of the right type, i.e. memory access violations. * Only handle traps at recorded instructions. The tests also test the consistency of the thread-in-wasm flag. I made one change in the trap handler where that consistency could be violated. All tests are executed with the default trap handler provided by V8, and with the trap handler callback installed in a test signal/exception handler. Change-Id: I03904bb6effd2e8694d3f4d1fbf62bc38002646e Reviewed-on: https://chromium-review.googlesource.com/c/1340246 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#57858}
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- 20 Nov, 2018 1 commit
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Andreas Haas authored
In the chrome-side implementation I currently use the default trap handlers of V8, see https://crrev.com/c/1290955 Bug: chromium:906565 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I74c5a18c479ad1c69303d104ad4f040de436c4e7 Reviewed-on: https://chromium-review.googlesource.com/c/1282960 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#57636}
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- 30 Oct, 2018 1 commit
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Andreas Haas authored
This is the V8 side of the implementation. You can take a look at a prototype of the Chrome side changes in https://crrev.com/c/1273043. Chrome could also use V8's default implementation of the trap handler, see https://crrev.com/c/1290952. Bug: v8:6743 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I9bb3e717db17a4f30bbb8acfd80a1f6510d463ff Reviewed-on: https://chromium-review.googlesource.com/c/1283111 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#57117}
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- 26 Oct, 2018 1 commit
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Andreas Haas authored
This CL refactors the existing trap handler code for Linux to allow a cleaner extension to Windows. 1) The CL extracts platform-specific code into separate files, see https://docs.google.com/document/d/1HCgKIpdjy_CEodTLvZ5VuykDI6gGTHrTtau2j0zwm28. Specifically this means: * Move posix-specific API functions from v8.h to v8-wasm-trap-handler-posix.h. Deprecate the existing TryHandleSignal API function. * Move posix-specific function declarations from trap-handler-internal.h to handler-inside-posix.h * Move posix-specific function definitions from handler-shared.cc to handler-outside-posix.cc 2) The CL changes filenames from *-linux.* to *-posix.*. I expect that most of the implementation for MacOS will be the same as for Linux. Bug: v8:6743 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I4bb7f199564a2f01042084d15a82311d11a93c7b Reviewed-on: https://chromium-review.googlesource.com/c/1280324 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#57028}
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- 20 Sep, 2018 1 commit
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Florian Sattler authored
Fixing clang-tidy warning. Bug: v8:8015 Change-Id: I5686fa0c1ed73b17f592a012b00c08c575ae5387 Reviewed-on: https://chromium-review.googlesource.com/1234234Reviewed-by: Andreas Haas <ahaas@chromium.org> Reviewed-by: Hannes Payer <hpayer@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Florian Sattler <sattlerf@google.com> Cr-Commit-Position: refs/heads/master@{#56062}
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- 29 Aug, 2018 1 commit
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Andreas Haas authored
{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}
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- 22 Aug, 2018 1 commit
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Andreas Haas authored
As far as I understand the TODO, it has been resolved already some lines below: if (kEnableDebug) { VerifyCodeRangeIsDisjoint(data); } bug: v8:8015 R=titzer@chromium.org Change-Id: I3686ad609b7c04e56b14ad2d1ccb265ac260bac7 Reviewed-on: https://chromium-review.googlesource.com/1185012Reviewed-by: Ben Titzer <titzer@chromium.org> Commit-Queue: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#55311}
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- 18 Jul, 2018 1 commit
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Clemens Hammacher authored
Avoid the C-call to switch the flag, just store to the address directly. Since js-to-wasm wrappers are still isolate dependent, we just store the address of the thread-local flag in the isolate (in ThreadLocalTop) and update it if threads are switched. R=ahaas@chromium.org, mstarzinger@chromium.org Bug: chromium:862123, v8:5277 Change-Id: I9e8a40094f11a8b3ba6701dfa7fa026a2d052cb1 Reviewed-on: https://chromium-review.googlesource.com/1136299 Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#54531}
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- 13 Jul, 2018 1 commit
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Clemens Hammacher authored
R=bradnelson@chromium.org, titzer@chromium.org CC=ahaas@chromium.org No-Try: true Change-Id: I0843b33f04861b8c829fac27231a39452db9f7a6 Reviewed-on: https://chromium-review.googlesource.com/1136443Reviewed-by: Brad Nelson <bradnelson@chromium.org> Commit-Queue: Brad Nelson <bradnelson@chromium.org> Cr-Commit-Position: refs/heads/master@{#54445}
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- 07 May, 2018 2 commits
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Clemens Hammacher authored
We had four files in git which used CRLF. After adding a .gitattributes file with "* text=auto", we should not get any new ones. This CL converts the four existing files to LF. R=mathias@chromium.org Bug: v8:7570 Change-Id: Ia9c92f4bed14c6669de7d60390627a11de6450b8 Reviewed-on: https://chromium-review.googlesource.com/1047611 Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org> Reviewed-by: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#53046}
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Clemens Hammacher authored
If trap handlers cannot be installed, we printed two lines to stdout and stderr, both not terminated by a newline. This CL adds a newline to one output and uses the FATAL macro for the other, highlighting the error better and showing the location where it happens. R=eholk@chromium.org Bug: v8:7570 Change-Id: Ic24f48f92b87528e0fd5889badf2c90d765e451a Reviewed-on: https://chromium-review.googlesource.com/1047606Reviewed-by: Eric Holk <eholk@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#53043}
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- 04 May, 2018 1 commit
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Eric Holk (eholk) authored
In preparing for adding trap-based bounds checking to Windows, this change refactors the code to separate the platform-specific portions from that which can be shared between platforms. Internally, we've renamed `RegisterDefaultSignalHandler` to `RegisterDefaultTrapHandler` to more accurately represent the difference in terminology between Linux (signals) and Windows (exceptions). The external API is left the same so as not to break downstream clients. This CL is primarily to make room for Windows support. Future CLs will begin adding support for Windows. This is a reincarnation of https://crrev.com/c/626558. Bug: v8:6743 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: Iaa8bfd68c14cd1d17933b12c24cb8dd5ee8a21d6 Reviewed-on: https://chromium-review.googlesource.com/998829 Commit-Queue: Eric Holk <eholk@chromium.org> Reviewed-by: Brad Nelson <bradnelson@chromium.org> Cr-Commit-Position: refs/heads/master@{#53006}
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- 14 Apr, 2018 1 commit
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Jakob Kummerow authored
The "Address" type is V8's general-purpose type for manipulating memory addresses. Per the C++ spec, pointer arithmetic and pointer comparisons are undefined behavior except within the same array; since we generally don't operate within a C++ array, our general-purpose type shouldn't be a pointer type. Bug: v8:3770 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel Change-Id: Ib96016c24a0f18bcdba916dabd83e3f24a1b5779 Reviewed-on: https://chromium-review.googlesource.com/988657 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#52601}
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- 09 Apr, 2018 1 commit
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Eric Holk authored
Bug: chromium:813376 Change-Id: I7d32f2ea09f7e8a4b75b9826695e129adac69e50 Reviewed-on: https://chromium-review.googlesource.com/987628 Commit-Queue: Eric Holk <eholk@chromium.org> Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#52495}
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- 04 Apr, 2018 1 commit
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Eric Holk authored
The first part of this change updates StoreMem_offset_oob_i64 to use one page of Wasm memory, rather than just a few bytes. Using less than a page was out of spec for Wasm anyway, so this is better. This required a small change in the test runner to set and clear the thread_in_wasm flag around Wasm calls. This was accomplished by a ThreadInWasmScope convenience class. The majority of the changes are because the cctest environment does not support runtime exceptions. In the code generator, where we used to throw a WasmMemOutOfBounds exception, we now need to call out to the test hook instead if runtime exceptions are not supported. This involved plumbing the runtime_exception_support flag down to the code generator. Rather than adding and shuffling around extra parameters everywhere, this CL packages the previous protected instruction list in a new WasmCompilationData object that now includes the runtime_exception_support flag as well. Bug: v8:5277 Change-Id: Ic9c9e5a53a07a7773b58c0aee7c26bbd2ddf82f3 Reviewed-on: https://chromium-review.googlesource.com/989017 Commit-Queue: Eric Holk <eholk@chromium.org> Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#52368}
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- 26 Mar, 2018 1 commit
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Michael Starzinger authored
Now that WebAssembly code has moved off the garbage collected heap, it is no longer subject to relocation and support for updating the base address for the purposes of trap handling can be removed. R=eholk@chromium.org BUG=v8:7549 Change-Id: I7a98f192e0c91274fa2ccdb59cdd106da6217948 Reviewed-on: https://chromium-review.googlesource.com/978248Reviewed-by: Eric Holk <eholk@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#52207}
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- 22 Mar, 2018 1 commit
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Eric Holk authored
This CL also deprecates V8::RegisterDefaultSignalHandler. Now instead of using the old API, clients should call V8::EnableWebAssemblyTrapHandler. Just setting the --wasm-trap-handler flag will no longer have any effect. Bug: v8:5277 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: Idd862185af9abcd4a3c845c02f9e916e8b56f114 Reviewed-on: https://chromium-review.googlesource.com/965005Reviewed-by: Karl Schimpf <kschimpf@chromium.org> Commit-Queue: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#52126}
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- 20 Mar, 2018 1 commit
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Eric Holk authored
The new API supersedes the old `RegisterDefaultSignalHandler` and flag combination. Now the embedder must explicitly call `EnableWebAssemblyTrapHandler` to activate the trap handler and optionally install the default signal handler. The old flag is now used only by D8 to decide whether to call this function. Bug: v8:5277 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I05fbb2138138bfc95b14361aabd712db84789b4a Reviewed-on: https://chromium-review.googlesource.com/963179 Commit-Queue: Eric Holk <eholk@chromium.org> Reviewed-by: Adam Klein <adamk@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Cr-Commit-Position: refs/heads/master@{#52081}
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- 27 Feb, 2018 1 commit
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Clemens Hammacher authored
The type std::enable_if<cond> does always exist, it only makes sense to check for std::enable_if<cond>::type. But the way this is used here we also cannot do that, so just replace this by a good old "#ifdef DEBUG". Drive-by: Minor unrelated cleanup (constexpr and ifdef). R=eholk@chromium.org Change-Id: I6bc27ee3adfd3ec3d38d61df67dd9cdff0faf2f7 Reviewed-on: https://chromium-review.googlesource.com/939387Reviewed-by: Eric Holk <eholk@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#51612}
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- 21 Feb, 2018 1 commit
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Eric Holk authored
There were two failure paths where the CodeProtectionInfo object would not be freed. This adds a free() on those paths to prevent a memory leak. Bug: v8:7434 Change-Id: I48d60aee3255d829bf39b51cc30fabaf76b1fb07 Reviewed-on: https://chromium-review.googlesource.com/927746Reviewed-by: Brad Nelson <bradnelson@chromium.org> Commit-Queue: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#51408}
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- 02 Feb, 2018 1 commit
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jgruber authored
This check verifies that all .h files in the src/ directory have an include guard of the form #ifndef V8_PATH_TO_FILE_H_ #define V8_PATH_TO_FILE_H_ // ... #endif // V8_PATH_TO_FILE_H_ The check can be skipped with a magic comment: // PRESUBMIT_INTENTIONALLY_MISSING_INCLUDE_GUARD Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;master.tryserver.blink:linux_trusty_blink_rel Change-Id: I0a7b96abec289ad60f64ba8418f1892a6969596d Reviewed-on: https://chromium-review.googlesource.com/897487Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Reviewed-by: Georg Neis <neis@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#51079}
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- 07 Dec, 2017 1 commit
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Karl Schimpf authored
The previous code assumed that trap handling was a global concept, defined by function trap_handler::UseTrapHandler(). This CL does the first step in changing the decision to be specifiable at a module level. Therefore trap_handler::UseTrapHandler() is replaced by trap_handler::IsTrapHandlerEnabled(), and communicates if compilation supports the use of trap handlers (but still allowing the use of bounds checking on memory accesses). It then refactors the classes ModuleEnv and WasmCompiledModule to have a field "use_trap_handler" that specifies if traps should be used for the memory accesses in the module being compiled. Bug: v8:7143 Change-Id: I9844842d5721c86c2dd55e911b42bf8b9922cf63 Reviewed-on: https://chromium-review.googlesource.com/802322 Commit-Queue: Eric Holk <eholk@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Reviewed-by: Mircea Trofin <mtrofin@chromium.org> Reviewed-by: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#49915}
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- 28 Nov, 2017 3 commits
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Mircea Trofin authored
This reverts commit b301203e. Reason for revert: Fixed issues on arm. Original change's description: > Revert "[wasm] JIT using WasmCodeManager" > > This reverts commit d4c8393c. > > Reason for revert: Breaks ARM hardware: > https://build.chromium.org/p/client.v8.ports/builders/V8%20Arm%20-%20debug/builds/5268 > > Original change's description: > > [wasm] JIT using WasmCodeManager > > > > This is the first step towards wasm code sharing. This CL moves wasm > > code generation outside the JavaScript GC heap using the previously - > > introduced WasmCodeManager (all this, behind the --wasm-jit-to-native > > flag). > > > > See design document: go/wasm-on-native-heap-stage-1 > > > > This CL doesn't change other wasm architectural invariants. We still > > have per-Isolate wasm code generation, and per-wasm module instance > > code specialization. > > > > Bug:v8:6876 > > > > Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng > > Change-Id: I1e08cecad75f93fb081545c31228a4568be276d3 > > Reviewed-on: https://chromium-review.googlesource.com/674086 > > Reviewed-by: Ben Titzer <titzer@chromium.org> > > Reviewed-by: Eric Holk <eholk@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#49689} > > TBR=bradnelson@chromium.org,titzer@chromium.org,mtrofin@chromium.org,eholk@chromium.org > > Change-Id: I89af1ea5decd841bc12cd2ceaf74d32bc4433885 > No-Presubmit: true > No-Tree-Checks: true > No-Try: true > Bug: v8:6876 > Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng > Reviewed-on: https://chromium-review.googlesource.com/794690 > Reviewed-by: Michael Achenbach <machenbach@chromium.org> > Commit-Queue: Michael Achenbach <machenbach@chromium.org> > Cr-Commit-Position: refs/heads/master@{#49691} TBR=bradnelson@chromium.org,machenbach@chromium.org,titzer@chromium.org,mtrofin@chromium.org,eholk@chromium.org Change-Id: I1b07638d1bb2ba0664305b4b2dcfc1342dc8444f No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:6876 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Reviewed-on: https://chromium-review.googlesource.com/794434 Commit-Queue: Mircea Trofin <mtrofin@chromium.org> Reviewed-by: Mircea Trofin <mtrofin@chromium.org> Cr-Commit-Position: refs/heads/master@{#49692}
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Michael Achenbach authored
This reverts commit d4c8393c. Reason for revert: Breaks ARM hardware: https://build.chromium.org/p/client.v8.ports/builders/V8%20Arm%20-%20debug/builds/5268 Original change's description: > [wasm] JIT using WasmCodeManager > > This is the first step towards wasm code sharing. This CL moves wasm > code generation outside the JavaScript GC heap using the previously - > introduced WasmCodeManager (all this, behind the --wasm-jit-to-native > flag). > > See design document: go/wasm-on-native-heap-stage-1 > > This CL doesn't change other wasm architectural invariants. We still > have per-Isolate wasm code generation, and per-wasm module instance > code specialization. > > Bug:v8:6876 > > Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng > Change-Id: I1e08cecad75f93fb081545c31228a4568be276d3 > Reviewed-on: https://chromium-review.googlesource.com/674086 > Reviewed-by: Ben Titzer <titzer@chromium.org> > Reviewed-by: Eric Holk <eholk@chromium.org> > Cr-Commit-Position: refs/heads/master@{#49689} TBR=bradnelson@chromium.org,titzer@chromium.org,mtrofin@chromium.org,eholk@chromium.org Change-Id: I89af1ea5decd841bc12cd2ceaf74d32bc4433885 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:6876 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Reviewed-on: https://chromium-review.googlesource.com/794690Reviewed-by: Michael Achenbach <machenbach@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#49691}
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Mircea Trofin authored
This is the first step towards wasm code sharing. This CL moves wasm code generation outside the JavaScript GC heap using the previously - introduced WasmCodeManager (all this, behind the --wasm-jit-to-native flag). See design document: go/wasm-on-native-heap-stage-1 This CL doesn't change other wasm architectural invariants. We still have per-Isolate wasm code generation, and per-wasm module instance code specialization. Bug:v8:6876 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Change-Id: I1e08cecad75f93fb081545c31228a4568be276d3 Reviewed-on: https://chromium-review.googlesource.com/674086Reviewed-by: Ben Titzer <titzer@chromium.org> Reviewed-by: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#49689}
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- 16 Oct, 2017 1 commit
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Clemens Hammacher authored
Instead of modifying this flag in compiled wasm code, we can just change it in the caller / called code. This saves code space and compilation time and fixes the referenced bug. R=titzer@chromium.org, eholk@chromium.org Bug: chromium:773631, v8:5277 Change-Id: I095158ac01eecd21a92649a3990e8d7c593db912 Reviewed-on: https://chromium-review.googlesource.com/712597Reviewed-by: Ben Titzer <titzer@chromium.org> Reviewed-by: Eric Holk <eholk@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#48602}
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- 11 Oct, 2017 3 commits
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Eric Holk (eholk) authored
This is a reland of cc237d87 Original change's description: > Reland "[wasm] trap handlers: fall back on old signal handler" > > This is a reland of ee4fe896 > Original change's description: > > [wasm] trap handlers: fall back on old signal handler > > > > This is primarily needed to test D8 under ASan. ASan installs a signal handler > > early in the process startup to show stack traces from crashes. We need to make > > sure that if V8 does not handle a signal then the existing handler gets a > > chance. > > > > This change only applies when using V8's default signal handler. When > > integrating with the embedder's signal handler the behavior is unchanged. > > > > Bug: chromium:771948 > > Change-Id: Ifd560acf9700ec5f714f009530258fa92c83cabe > > Reviewed-on: https://chromium-review.googlesource.com/705823 > > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > > Commit-Queue: Eric Holk <eholk@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#48429} > > Bug: chromium:771948 > Change-Id: Ide307091c432fd933c48f89c51851b8dce44dd30 > Reviewed-on: https://chromium-review.googlesource.com/710114 > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > Commit-Queue: Eric Holk <eholk@chromium.org> > Cr-Commit-Position: refs/heads/master@{#48435} Bug: chromium:771948 Change-Id: I781dfe356a728760090b6ccfa58212096e8f20c8 Reviewed-on: https://chromium-review.googlesource.com/713956Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> Commit-Queue: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#48474}
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Michael Achenbach authored
This reverts commit cc237d87. Reason for revert: breaks win clang: https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang/builds/8538 Original change's description: > Reland "[wasm] trap handlers: fall back on old signal handler" > > This is a reland of ee4fe896 > Original change's description: > > [wasm] trap handlers: fall back on old signal handler > > > > This is primarily needed to test D8 under ASan. ASan installs a signal handler > > early in the process startup to show stack traces from crashes. We need to make > > sure that if V8 does not handle a signal then the existing handler gets a > > chance. > > > > This change only applies when using V8's default signal handler. When > > integrating with the embedder's signal handler the behavior is unchanged. > > > > Bug: chromium:771948 > > Change-Id: Ifd560acf9700ec5f714f009530258fa92c83cabe > > Reviewed-on: https://chromium-review.googlesource.com/705823 > > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > > Commit-Queue: Eric Holk <eholk@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#48429} > > Bug: chromium:771948 > Change-Id: Ide307091c432fd933c48f89c51851b8dce44dd30 > Reviewed-on: https://chromium-review.googlesource.com/710114 > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > Commit-Queue: Eric Holk <eholk@chromium.org> > Cr-Commit-Position: refs/heads/master@{#48435} TBR=mseaborn@chromium.org,bradnelson@chromium.org,gdeepti@chromium.org,eholk@chromium.org,mark@chromium.org Change-Id: If71f61ae186fc6be2006edeb2dffd7e2b6827d91 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:771948 Reviewed-on: https://chromium-review.googlesource.com/711854Reviewed-by: Michael Achenbach <machenbach@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#48436}
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Eric Holk authored
This is a reland of ee4fe896 Original change's description: > [wasm] trap handlers: fall back on old signal handler > > This is primarily needed to test D8 under ASan. ASan installs a signal handler > early in the process startup to show stack traces from crashes. We need to make > sure that if V8 does not handle a signal then the existing handler gets a > chance. > > This change only applies when using V8's default signal handler. When > integrating with the embedder's signal handler the behavior is unchanged. > > Bug: chromium:771948 > Change-Id: Ifd560acf9700ec5f714f009530258fa92c83cabe > Reviewed-on: https://chromium-review.googlesource.com/705823 > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > Commit-Queue: Eric Holk <eholk@chromium.org> > Cr-Commit-Position: refs/heads/master@{#48429} Bug: chromium:771948 Change-Id: Ide307091c432fd933c48f89c51851b8dce44dd30 Reviewed-on: https://chromium-review.googlesource.com/710114Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> Commit-Queue: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#48435}
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- 10 Oct, 2017 1 commit
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Eric Holk authored
This reverts commit ee4fe896. Reason for revert: <INSERT REASONING HERE> Original change's description: > [wasm] trap handlers: fall back on old signal handler > > This is primarily needed to test D8 under ASan. ASan installs a signal handler > early in the process startup to show stack traces from crashes. We need to make > sure that if V8 does not handle a signal then the existing handler gets a > chance. > > This change only applies when using V8's default signal handler. When > integrating with the embedder's signal handler the behavior is unchanged. > > Bug: chromium:771948 > Change-Id: Ifd560acf9700ec5f714f009530258fa92c83cabe > Reviewed-on: https://chromium-review.googlesource.com/705823 > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > Commit-Queue: Eric Holk <eholk@chromium.org> > Cr-Commit-Position: refs/heads/master@{#48429} TBR=mseaborn@chromium.org,bradnelson@chromium.org,gdeepti@chromium.org,eholk@chromium.org,mark@chromium.org Change-Id: Ib43b096831b15c312b3b460e59f268d5ea903f21 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:771948 Reviewed-on: https://chromium-review.googlesource.com/710034Reviewed-by: Eric Holk <eholk@chromium.org> Commit-Queue: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#48430}
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