For memory64, the init expressions for data segments provide a 64-bit
value. This CL adds a new {EvalUint64InitExpr} function alongside
{EvalUint32InitExpr}. It supports i64.const and global.get operations.
R=manoskouk@chromium.org
Bug: v8:10949
Change-Id: I58acbb28acb8771a0947f9d5df1c14e6ca0f79cf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2632589
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72131}
`0x12345678` will be written to memory in the same order on BE
machines however, as Wasm is LE enforced, a memory load will
force a byte reverse operation on BE machines which changes the value.
To fix the problem, we write the reversed value to memory.
Change-Id: I0d562768d5cef823cb918ed1b57a2a41e404ffc6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2622927
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72041}
... and fix an issue in TurboFan and issues in Liftoff.
R=manoskouk@chromium.org
Bug: v8:10949
Change-Id: I3493205ab56a4ded550af6fcd75c465f7d8894ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2618246
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72035}
In memory64, the index is a 64-bit value even on 32 bit. Thus the bounds
check needs to check explicitly that the high word is zero. The (pointer
sized) low word is then checked against the actual memory size.
R=manoskouk@chromium.org
Bug: v8:10949
Change-Id: I311664ccadaec44a6c88777a60b1a3b45b6c0642
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2617088
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72016}
This adds a first execution test for memory64 in the form of a cctest.
Several things are still not working correctly, hence this test only
checks TurboFan on 64-bit systems, and Liftoff.
Bounds checks in Liftoff are fixed to work correctly on 32-bit.
Follow-up CLs will extend the test to also test TurboFan on 32-bit, the
interpreter, and traps. All of those features still have issues.
R=manoskouk@chromium.org
Bug: v8:10949
Change-Id: Ic7edcf3783421634fe2ec99eac6f257c557a29b5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2610968
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72014}
