[wasm] Fix br_table in the wasm interpreter to use varuint32.

[wasm] Fix br_table in the wasm interpreter to use varuint32.

The wasm interpreter crashed because it interpreted the table of
br_table as a table of uint8, but according to the spec it is a table of
varint32. Therefore the wasm interpreter misinterpreted 0x80 0x00 as 128
and not as 0, which caused a crash.

R=tizer@chromium.org
BUG=chromium:660262
TEST=cctest/test-run-wasm/RunWasmInterpreted_Regression_660262

Committed: https://crrev.com/a3b77d560e245ee04cdc254e033ff29e55a7cf86
Cr-Commit-Position: refs/heads/master@{#40708}

[ahaas, 2016-10-31 15:39:45]

The CQ bit was checked by ahaas@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-31 15:39:47]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-31 15:43:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-31 15:43:01]

Dry run: Try jobs failed on following builders:
  v8_win64_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win64_rel_ng/builds/16984)
  v8_win_nosnap_shared_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_nosnap_shared_rel_ng...)

[ahaas, 2016-10-31 15:46:03]

The CQ bit was checked by ahaas@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-31 15:46:08]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-31 15:50:59]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-31 15:50:59]

Dry run: Try jobs failed on following builders:
  v8_linux64_gyp_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_gyp_rel_ng/build...)

[ahaas, 2016-11-02 08:44:18]

The CQ bit was checked by ahaas@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-02 08:44:30]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-02 09:08:54]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-11-02 09:08:55]

Dry run: This issue passed the CQ dry run.

[ahaas, 2016-11-02 12:09:41]

ahaas@chromium.org changed reviewers:
+ rossberg@chromium.org

[rossberg, 2016-11-02 12:27:55]

lgtm

[ahaas, 2016-11-02 17:04:36]

The CQ bit was checked by ahaas@chromium.org

[commit-bot: I haz the power, 2016-11-02 17:04:43]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-02 17:06:47]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-11-17 22:19:45]

Description was changed from

==========
[wasm] Fix br_table in the wasm interpreter to use varuint32.

The wasm interpreter crashed because it interpreted the table of
br_table as a table of uint8, but according to the spec it is a table of
varint32. Therefore the wasm interpreter misinterpreted 0x80 0x00 as 128
and not as 0, which caused a crash.


R=tizer@chromium.org
BUG=chromium:660262
TEST=cctest/test-run-wasm/RunWasmInterpreted_Regression_660262
==========

to

==========
[wasm] Fix br_table in the wasm interpreter to use varuint32.

The wasm interpreter crashed because it interpreted the table of
br_table as a table of uint8, but according to the spec it is a table of
varint32. Therefore the wasm interpreter misinterpreted 0x80 0x00 as 128
and not as 0, which caused a crash.

R=tizer@chromium.org
BUG=chromium:660262
TEST=cctest/test-run-wasm/RunWasmInterpreted_Regression_660262

Committed: https://crrev.com/a3b77d560e245ee04cdc254e033ff29e55a7cf86
Cr-Commit-Position: refs/heads/master@{#40708}
==========

[commit-bot: I haz the power, 2016-11-17 22:19:47]

Patchset 3 (id:??) landed as
https://crrev.com/a3b77d560e245ee04cdc254e033ff29e55a7cf86
Cr-Commit-Position: refs/heads/master@{#40708}