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  1. 30 Aug, 2016 1 commit
  3. 29 Aug, 2016 2 commits
    • mtrofin's avatar
      [wasm] Use weak reference for wasm deopt data. · b9eb9ee7
      mtrofin authored 
      This unblocks moving off having to hold on to a compiled module
template.

Once we don't have the template, when we have a single instance, the
instance and wasm module share the same compiled code. We will want
to clear that code off instance-specific stuff, when the instance is
unreferenced and should be GC-ed (stuff like the instance heap, for
instance). However, the deopt data will maintain a strong reference,
blocking the GC: the module object strongly references the compiled
code, which strongly references the instance object through the deopt
data.

This change addresses that by making that last reference weak.

BUG=v8:5316

Review-Url: https://codereview.chromium.org/2284683005
Cr-Commit-Position: refs/heads/master@{#38990}
      b9eb9ee7
    • bradnelson's avatar
      [WASM] Adding fuzzing binaries for wasm, and script to update them. · 08639b5b
      bradnelson authored 
      This adds:
* A script (tools/update-wasm-fuzzers.sh), which creates a new fuzzing seed
  corpus and uploads to google storage (you must have the right credentials).
* A new pair of DEPS entries to pull in the current version of the corpus
  based on a checked in pair of hash files.

BUG=None
TEST=None
R=ahaas@chromium.org,kcc@chromium.org,mvstanton@chromium.org

Review-Url: https://codereview.chromium.org/2273303002
Cr-Commit-Position: refs/heads/master@{#38987}
      08639b5b
  5. 26 Aug, 2016 1 commit
  7. 24 Aug, 2016 1 commit
    • mtrofin's avatar
      [wasm] Remember import indices · 5524cbf5
      mtrofin authored 
      When compiling a wasm module, we initially generate placeholders for
imports, which store the index corresponding to that import. Later,
at instantiation time, we use that index to correctly link the
provided import.

In this scheme, supporting multiple instantiations requires we
preserve a template (set of unlinked compiled wasm functions) which
we clone for each instance. To avoid holding on to this template,
which may be large (wasm compiled code should be expected to be in
the order of tens of MB), we must enable cloning from an instance's
linked wasm functions.

This change is a step in that direction. Instead of assuming the wasm
functions reference placeholders, we store a table of the code objects
used for imports together with the compiled module, and use that
information to determine the index of the import. Initially, that
table contains placeholders. For instances, however, that table contains
their actual imports.

BUG=

Review-Url: https://codereview.chromium.org/2269323002
Cr-Commit-Position: refs/heads/master@{#38848}
      5524cbf5
  9. 23 Aug, 2016 4 commits
  11. 22 Aug, 2016 2 commits
  13. 19 Aug, 2016 2 commits
  15. 16 Aug, 2016 2 commits
  17. 11 Aug, 2016 2 commits
    • jpp's avatar
      [WASM] Exception handling prototype. · b2b40134
      jpp authored 
      ------------------------------------------------------------------------

This CL adds support for decoding eh-related wasm opcodes:
* Throw: used for raising an exception; the thrown value lives on top of
         the evaluation stack;
* TryCatch: used to start a try block that has a catch clause;
* TryFinally: used to start a try block that has a finally clause;
* TryCatchFinally: used to start a try block that has both catch and
                   finally clauses;
* Catch <local>: used to start the catch block of a
                 TryCatch/TryCatchFinally block; the thrown value is
                 stored in local <local>; and
* Finally: used to start a finally block of TryFinally/TryCatchFinally.

Three different opcodes are used to start a try block to simplify the
AST construction during bytecode parsing.

BUG=

Review-Url: https://codereview.chromium.org/2222193004
Cr-Commit-Position: refs/heads/master@{#38579}
      b2b40134
    • ahaas's avatar
      [wasm] Allow import function to be any kind of callables. · 8d491089
      ahaas authored 
      With this CL all kinds of Callable can imported into wasm. Please take a special look at the context that is used now in the WasmToJSWrapper.

BUG=633895
TEST=mjsunit/wasm/ffi.js

Review-Url: https://codereview.chromium.org/2208703002
Cr-Commit-Position: refs/heads/master@{#38569}
      8d491089
  19. 09 Aug, 2016 1 commit
  21. 08 Aug, 2016 3 commits
  23. 04 Aug, 2016 2 commits
  25. 03 Aug, 2016 2 commits
  27. 02 Aug, 2016 2 commits
  29. 28 Jul, 2016 2 commits
    • cbruni's avatar
      [api] Introduce fast instantiations cache · f3f738fe
      cbruni authored 
      This CL introduces a new fast flat instantiations cache for the first 1024 object templates.
After that we fall back to the existing slower dictionary cache.

Drive-by-fix: de-handlify and clean up some code in api-natives.cc

BUG=chromium:630217

Review-Url: https://codereview.chromium.org/2170743003
Cr-Commit-Position: refs/heads/master@{#38146}
      f3f738fe
    • ddchen's avatar
      [wasm] Add support for multiple indirect function tables · 0a9d4003
      ddchen authored 
      This patch updates internal data structures used by V8 to support
multiple indirect function tables (WebAssembly/design#682). But, since
this feature is post-MVP, the functionality is not directly exposed and
parsing/generation of WebAssembly is left unchanged. Nevertheless, it
is being used in an experiment to implement fine-grained control flow
integrity based on C/C++ types.

BUG=

Review-Url: https://codereview.chromium.org/2174123002
Cr-Commit-Position: refs/heads/master@{#38110}
      0a9d4003
  31. 26 Jul, 2016 1 commit
  33. 25 Jul, 2016 2 commits
  35. 22 Jul, 2016 1 commit
  37. 21 Jul, 2016 3 commits
  39. 20 Jul, 2016 1 commit
  41. 16 Jul, 2016 1 commit
  43. 15 Jul, 2016 2 commits