[v24.x backport] deps: V8: cherry-pick 1158ae719749#64498
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Original commit message:
[wasm] Fix jump table slot overflow on x64 with CET enabled
JumpTableAssembler::EmitJumpSlot for x64 was advancing the PC before
checking if the target was reachable via a 32-bit displacement when CET
was enabled. This caused a slot overflow when the far-jump fallback was
triggered, as the second attempt to emit the slot would start at an
incorrect offset.
This CL ensures that the displacement check is performed before any
instructions are emitted, making the function side-effect-free on
failure. It also introduces kJumpTableSlotEntryMarkerSize to clarify
the displacement calculation, following the pattern used on ARM64.
Reported-by: Fabien Romano <fabienromano@gmail.com>
TAG=agy
R=jkummerow@chromium.org
Fixed: 532112743
Change-Id: Iaf6f15b51a66a45711e8556972ac0d353e6117c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/8063803
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#108556}
Refs: v8/v8@1158ae7
PR-URL: nodejs#64432
Fixes: nodejs#64424
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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Backports #64432 to v24.x.
Original commit message:
Refs: v8/v8@1158ae7
PR-URL: #64432
Fixes: #64424
Reviewed-By: Michaël Zasso targos@protonmail.com
Reviewed-By: Richard Lau richard.lau@ibm.com