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deps: V8: cherry-pick aa0b288f87cc #62136

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deps: V8: cherry-pick aa0b288f87cc #62136

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2 changes: 1 addition & 1 deletion common.gypi
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@

# Reset this number to 0 on major V8 upgrades.
# Increment by one for each non-official patch applied to deps/v8.
'v8_embedder_string': '-node.12',
'v8_embedder_string': '-node.13',

##### V8 defaults for Node.js #####

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9 changes: 6 additions & 3 deletions deps/v8/src/wasm/jump-table-assembler.cc
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Expand Up @@ -426,7 +426,8 @@ void JumpTableAssembler::EmitFarJumpSlot(Address target) {
// static
void JumpTableAssembler::PatchFarJumpSlot(WritableJitAllocation& jit_allocation,
Address slot, Address target) {
Address target_addr = slot + 8;
// See {EmitFarJumpSlot} for the offset of the target.
Address target_addr = slot + kFarJumpTableSlotSize - kSystemPointerSize;
jit_allocation.WriteValue(target_addr, target, kRelaxedStore);
}

Expand Down Expand Up @@ -636,7 +637,7 @@ bool JumpTableAssembler::EmitJumpSlot(Address target) {

CHECK_EQ(0, relative_target & (kAAMask | kLKMask));
// The jump table is updated live, so the write has to be atomic.
emit<uint32_t>(inst[0] | relative_target, kRelaxedStore);
emit<uint32_t>(inst[0] | (relative_target & kImm26Mask), kRelaxedStore);
return true;
}

Expand Down Expand Up @@ -671,7 +672,9 @@ void JumpTableAssembler::EmitFarJumpSlot(Address target) {
// static
void JumpTableAssembler::PatchFarJumpSlot(WritableJitAllocation& jit_allocation,
Address slot, Address target) {
Address target_addr = slot + kFarJumpTableSlotSize - 8;
// See {EmitFarJumpSlot} for the offset of the target.
Address target_addr =
slot + kFarJumpTableSlotSize - (2 * kInstrSize) - kSystemPointerSize;
jit_allocation.WriteValue(target_addr, target, kRelaxedStore);
}

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