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  1. 13 Sep, 2016 1 commit
    • jpp's avatar
      [V8][Wasm] Removes references to finally in wasm. · ee8ae932
      jpp authored 
      The initial support for low level exception handling in Wasm will not
support finally blocks. This decision is taken for both simplicity (
handling finallys is not straightforward if we want try blocks to yield
values), and lack of good use case (clang++ does not need them.) They
may be added in the future once we understand the implications of
having them.

BUG=

Review-Url: https://codereview.chromium.org/2336303002
Cr-Commit-Position: refs/heads/master@{#39393}
      ee8ae932
  3. 12 Sep, 2016 1 commit
  5. 06 Sep, 2016 1 commit
  7. 02 Sep, 2016 1 commit
  9. 01 Sep, 2016 2 commits
  11. 26 Aug, 2016 2 commits
  13. 16 Aug, 2016 1 commit
  15. 11 Aug, 2016 1 commit
    • 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
  17. 02 Aug, 2016 1 commit
  19. 28 Jul, 2016 1 commit
    • 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
  21. 21 Jul, 2016 2 commits
  23. 13 Jul, 2016 2 commits
  25. 11 Jul, 2016 1 commit
  27. 01 Jul, 2016 1 commit
  29. 29 Jun, 2016 2 commits
  31. 27 Jun, 2016 1 commit
    • ddchen's avatar
      [wasm] improve handling of malformed inputs · fd2bf837
      ddchen authored 
      When reading malformed input, the length of variable-length types can be very large. Computing operand length with this and adding it to PC will overflow and screw up decode.

This patch switches to unsigned int for arity and lengths, terminates loop analysis on error, adds overflow checking to BranchTableOperand, and adds a unit test.

Review-Url: https://codereview.chromium.org/2052623003
Cr-Commit-Position: refs/heads/master@{#37301}
      fd2bf837
  33. 21 Jun, 2016 1 commit
    • rossberg's avatar
      Upgrade Wasm JS API, step 1 · 386c747b
      rossberg authored 
      Implements:
- WebAssembly object,
- WebAssembly.Module constructor,
- WebAssembly.Instance constructor,
- WebAssembly.compile async method,
- and Module and Instance instance objects.

Also, changes ErrorThrower to support capturing errors in a promise reject.

Since we cannot yet compile without fixing the Wasm memory, and cannot validate a module without compiling, the Module constructor and compile method don't do anything yet but checking that their argument is a suitable BufferSource. Instead of a compiled module, the hidden state of a Module object currently is just that buffer.

BUG=

Review-Url: https://codereview.chromium.org/2084573002
Cr-Commit-Position: refs/heads/master@{#37143}
      386c747b
  35. 20 Jun, 2016 2 commits
    • jpp's avatar
      V8. ASM-2-WASM. Another asm-types.h revision. · 4257fdea
      jpp authored 
      BUG=

Review-Url: https://codereview.chromium.org/2078053002
Cr-Commit-Position: refs/heads/master@{#37110}
      4257fdea
    • mtrofin's avatar
      [wasm] Separate compilation from instantiation · c1d01aea
      mtrofin authored 
      Compilation of wasm functions happens before instantiation. Imports are linked afterwards, at instantiation time. Globals and memory are also
allocated and then tied in via relocation at instantiation time.

This paves the way for implementing Wasm.compile, a prerequisite to
offering the compiled code serialization feature.

Currently, the WasmModule::Compile method just returns a fixed array
containing the code objects. More appropriate modeling of the compiled module to come.

Opportunistically centralized the logic on how to update memory
references, size, and globals, since that logic is the exact same on each
architecture, except for the actual storing of values back in the
instruction stream.

BUG=v8:5072

Review-Url: https://codereview.chromium.org/2056633002
Cr-Commit-Position: refs/heads/master@{#37086}
      c1d01aea
  37. 14 Jun, 2016 1 commit
  39. 13 Jun, 2016 1 commit
  41. 07 Jun, 2016 1 commit
  43. 25 May, 2016 2 commits
  45. 24 May, 2016 1 commit
  47. 17 May, 2016 1 commit
  49. 13 May, 2016 2 commits
  51. 11 May, 2016 1 commit
  53. 09 May, 2016 2 commits
  55. 06 May, 2016 1 commit
  57. 03 May, 2016 1 commit
  59. 02 May, 2016 1 commit
  61. 29 Apr, 2016 1 commit
    • titzer's avatar
      [wasm] Binary 11: Bump module version to 0xB. · ee03b721
      titzer authored 
      [wasm] Binary 11: Swap the order of section name / section length.
[wasm] Binary 11: Shorter section names.
[wasm] Binary 11: Add a prefix for function type declarations.
[wasm] Binary 11: Function types encoded as pcount, p*, rcount, r*
[wasm] Fix numeric names for functions.

R=rossberg@chromium.org,jfb@chromium.org,ahaas@chromium.org
BUG=chromium:575167
LOG=Y

Review-Url: https://codereview.chromium.org/1896863003
Cr-Commit-Position: refs/heads/master@{#35897}
      ee03b721