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package/wpewebkit: fix aarch64 renderer process crash

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We need to backport an aarch64 patch to prevent a crash.

Fixes:
==654== Conditional jump or move depends on uninitialised value(s)
==654==    at 0x68CF9D0: contains (Range.h:115)
==654==    by 0x68CF9D0: mark (JITStubRoutineSet.h:57)
==654==    by 0x68CF9D0: mark (ConservativeRoots.cpp:127)
==654==    by 0x68CF9D0: genericAddPointer<JSC::CompositeMarkHook> (ConservativeRoots.cpp:69)
==654==    by 0x68CF9D0: genericAddSpan<JSC::CompositeMarkHook> (ConservativeRoots.cpp:101)
==654==    by 0x68CF9D0: JSC::ConservativeRoots::add(void*, void*, JSC::JITStubRoutineSet&, JSC::CodeBlockSet&) (ConservativeRoots.cpp:147)
==654==    by 0x68EA5BB: JSC::MachineThreads::gatherConservativeRoots(JSC::ConservativeRoots&, JSC::JITStubRoutineSet&, JSC::CodeBlockSet&, JSC::CurrentThreadState*, WTF::Thread*) (MachineStackMarker.cpp:202)
==654==    by 0x68D885B: _ZZN3JSC4Heap18addCoreConstraintsEvENUlRT_E0_clINS_11SlotVisitorEEEDaS2_ (Heap.cpp:2740)
==654==    by 0x68EFF7B: JSC::MarkingConstraint::execute(JSC::SlotVisitor&) (MarkingConstraint.cpp:58)
==654==    by 0x68F3D83: JSC::MarkingConstraintSolver::runExecutionThread(JSC::SlotVisitor&, JSC::MarkingConstraintSolver::SchedulerPreference, WTF::ScopedLambda<WTF::Optional<unsigned int> ()>) (MarkingConstraintSolver.cpp:237)
==654==    by 0x68D4413: JSC::Heap::runTaskInParallel(WTF::RefPtr<WTF::SharedTask<void (JSC::SlotVisitor&)>, WTF::RawPtrTraits<WTF::SharedTask<void (JSC::SlotVisitor&)> >, WTF::DefaultRefDerefTraits<WTF::SharedTask<void (JSC::SlotVisitor&)> > >) (Heap.cpp:3061)
==654==    by 0x68F3E9F: runFunctionInParallel<JSC::MarkingConstraintSolver::execute(JSC::MarkingConstraintSolver::SchedulerPreference, WTF::ScopedLambda<WTF::Optional<unsigned int>()>)::<lambda(JSC::SlotVisitor&)> > (Heap.h:397)
==654==    by 0x68F3E9F: JSC::MarkingConstraintSolver::execute(JSC::MarkingConstraintSolver::SchedulerPreference, WTF::ScopedLambda<WTF::Optional<unsigned int> ()>) (MarkingConstraintSolver.cpp:66)
==654==    by 0x68F4033: JSC::MarkingConstraintSolver::drain(WTF::BitVector&) (MarkingConstraintSolver.cpp:97)
==654==    by 0x68F4B2F: JSC::MarkingConstraintSet::executeConvergenceImpl(JSC::SlotVisitor&) (MarkingConstraintSet.cpp:114)
==654==    by 0x68F4C6B: JSC::MarkingConstraintSet::executeConvergence(JSC::SlotVisitor&) (MarkingConstraintSet.cpp:83)
==654==    by 0x68D9BC7: JSC::Heap::runFixpointPhase(JSC::GCConductor) (Heap.cpp:1378)
==654==    by 0x68D9E93: runCurrentPhase (Heap.cpp:1208)
==654==    by 0x68D9E93: JSC::Heap::runCurrentPhase(JSC::GCConductor, JSC::CurrentThreadState*) (Heap.cpp:1176)
==654==  Uninitialised value was created by a stack allocation
==654==    at 0x5AC3E80: JSC::ARM64Assembler::linkJump(JSC::AssemblerLabel, JSC::AssemblerLabel, JSC::ARM64Assembler::JumpType, JSC::ARM64Assembler::Condition) [clone .isra.0] (ARM64Assembler.h:2556)

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
James Hilliard 2021-07-23 20:05:33 -06:00 committed by Thomas Petazzoni
parent d7d23710fa
commit 8e436b6bfd
1 changed files with 382 additions and 0 deletions
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382
package/wpewebkit/0001-Add-ldp-and-stp-support-for-FP-registers-plus-some-b.patch Normal file
View File

@ -0,0 +1,382 @@
From 05f6ba814422a392d59037ebe4412168da0e44db Mon Sep 17 00:00:00 2001
From: Mark Lam <mark.lam@apple.com>
Date: Tue, 15 Jun 2021 01:04:01 +0000
Subject: [PATCH] Add ldp and stp support for FP registers, plus some bug
fixes. https://bugs.webkit.org/show_bug.cgi?id=226998 rdar://79313717
Reviewed by Robin Morisset.
This patch does the following:
1. Add ldp and stp support for FP registers.
This simply entails providing wrappers that take FPRegisterID and passing true
for the V bit to the underlying loadStoreRegisterPairXXX encoding function.
V is for vector (aka floating point). This will cause bit 26 in the instruction
to be set indicating that it's loading / storing floating point registers.
2. Add ARM64 disassembler support ldp and stp for FP registers.
This includes fixing A64DOpcodeLoadStoreRegisterPair::mask to not exclude the
FP versions of the instructions.
3. Add ARM64Assembler query methods for determining if an immediate is encodable
as the signed 12 bit immediate of ldp and stp instructions.
4. Fix ldp and stp offset form to take an int instead of an unsigned. The
immediate it takes is a 12-bit signed int, not unsigned.
5. In loadStoreRegisterPairXXX encoding functions used by the forms of ldp and stp,
RELEASE_ASSERT that the passed in immediate is encodable. Unlike ldur / stur,
there is no form of ldp / stp that takes the offset in a register that can be
used as a fail over. Hence, if the immediate is not encodable, this is a
non-recoverable event. The client is responsible for ensuring that the offset
is encodable.
6. Added some testmasm tests for testing the offset form (as opposed to PreIndex
and PostIndex forms) of ldp and stp. We currently only use the offset form
in our JITs.
* assembler/ARM64Assembler.h:
(JSC::ARM64Assembler::isValidLDPImm):
(JSC::ARM64Assembler::isValidLDPFPImm):
(JSC::ARM64Assembler::ldp):
(JSC::ARM64Assembler::ldnp):
(JSC::ARM64Assembler::isValidSTPImm):
(JSC::ARM64Assembler::isValidSTPFPImm):
(JSC::ARM64Assembler::stp):
(JSC::ARM64Assembler::stnp):
(JSC::ARM64Assembler::loadStoreRegisterPairPostIndex):
(JSC::ARM64Assembler::loadStoreRegisterPairPreIndex):
(JSC::ARM64Assembler::loadStoreRegisterPairOffset):
(JSC::ARM64Assembler::loadStoreRegisterPairNonTemporal):
* assembler/AssemblerCommon.h:
(JSC::isValidSignedImm7):
* assembler/MacroAssemblerARM64.h:
(JSC::MacroAssemblerARM64::loadPair64):
(JSC::MacroAssemblerARM64::storePair64):
* assembler/testmasm.cpp:
(JSC::testLoadStorePair64Int64):
(JSC::testLoadStorePair64Double):
* disassembler/ARM64/A64DOpcode.cpp:
(JSC::ARM64Disassembler::A64DOpcodeLoadStoreRegisterPair::format):
* disassembler/ARM64/A64DOpcode.h:
Canonical link: https://commits.webkit.org/238801@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@278856 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
[james.hilliard1@gmail.com: backport from upstream commit
05f6ba814422a392d59037ebe4412168da0e44db]
---
Source/JavaScriptCore/ChangeLog | 61 +++
.../JavaScriptCore/assembler/ARM64Assembler.h | 104 ++++-
.../assembler/AssemblerCommon.h | 11 +-
.../assembler/MacroAssemblerARM64.h | 20 +
Source/JavaScriptCore/assembler/testmasm.cpp | 437 ++++++++++++++++++
.../disassembler/ARM64/A64DOpcode.cpp | 8 +-
.../disassembler/ARM64/A64DOpcode.h | 4 +-
7 files changed, 630 insertions(+), 15 deletions(-)
diff --git a/Source/JavaScriptCore/assembler/ARM64Assembler.h b/Source/JavaScriptCore/assembler/ARM64Assembler.h
index 2cc53c8ccda5..758cbe402779 100644
--- a/Source/JavaScriptCore/assembler/ARM64Assembler.h
+++ b/Source/JavaScriptCore/assembler/ARM64Assembler.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012-2020 Apple Inc. All rights reserved.
+ * Copyright (C) 2012-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -1114,6 +1114,20 @@ public:
insn(0x0);
}
+ template<int datasize>
+ ALWAYS_INLINE static bool isValidLDPImm(int immediate)
+ {
+ unsigned immedShiftAmount = memPairOffsetShift(false, MEMPAIROPSIZE_INT(datasize));
+ return isValidSignedImm7(immediate, immedShiftAmount);
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE static bool isValidLDPFPImm(int immediate)
+ {
+ unsigned immedShiftAmount = memPairOffsetShift(true, MEMPAIROPSIZE_FP(datasize));
+ return isValidSignedImm7(immediate, immedShiftAmount);
+ }
+
template<int datasize>
ALWAYS_INLINE void ldp(RegisterID rt, RegisterID rt2, RegisterID rn, PairPostIndex simm)
{
@@ -1129,17 +1143,45 @@ public:
}
template<int datasize>
- ALWAYS_INLINE void ldp(RegisterID rt, RegisterID rt2, RegisterID rn, unsigned pimm = 0)
+ ALWAYS_INLINE void ldp(RegisterID rt, RegisterID rt2, RegisterID rn, int simm = 0)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairOffset(MEMPAIROPSIZE_INT(datasize), false, MemOp_LOAD, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void ldnp(RegisterID rt, RegisterID rt2, RegisterID rn, int simm = 0)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairNonTemporal(MEMPAIROPSIZE_INT(datasize), false, MemOp_LOAD, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void ldp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, PairPostIndex simm)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairPostIndex(MEMPAIROPSIZE_FP(datasize), true, MemOp_LOAD, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void ldp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, PairPreIndex simm)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairPreIndex(MEMPAIROPSIZE_FP(datasize), true, MemOp_LOAD, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void ldp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, int simm = 0)
{
CHECK_DATASIZE();
- insn(loadStoreRegisterPairOffset(MEMPAIROPSIZE_INT(datasize), false, MemOp_LOAD, pimm, rn, rt, rt2));
+ insn(loadStoreRegisterPairOffset(MEMPAIROPSIZE_FP(datasize), true, MemOp_LOAD, simm, rn, rt, rt2));
}
template<int datasize>
- ALWAYS_INLINE void ldnp(RegisterID rt, RegisterID rt2, RegisterID rn, unsigned pimm = 0)
+ ALWAYS_INLINE void ldnp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, int simm = 0)
{
CHECK_DATASIZE();
- insn(loadStoreRegisterPairNonTemporal(MEMPAIROPSIZE_INT(datasize), false, MemOp_LOAD, pimm, rn, rt, rt2));
+ insn(loadStoreRegisterPairNonTemporal(MEMPAIROPSIZE_FP(datasize), true, MemOp_LOAD, simm, rn, rt, rt2));
}
template<int datasize>
@@ -1743,6 +1785,18 @@ public:
smaddl(rd, rn, rm, ARM64Registers::zr);
}
+ template<int datasize>
+ ALWAYS_INLINE static bool isValidSTPImm(int immediate)
+ {
+ return isValidLDPImm<datasize>(immediate);
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE static bool isValidSTPFPImm(int immediate)
+ {
+ return isValidLDPFPImm<datasize>(immediate);
+ }
+
template<int datasize>
ALWAYS_INLINE void stp(RegisterID rt, RegisterID rt2, RegisterID rn, PairPostIndex simm)
{
@@ -1758,17 +1812,45 @@ public:
}
template<int datasize>
- ALWAYS_INLINE void stp(RegisterID rt, RegisterID rt2, RegisterID rn, unsigned pimm = 0)
+ ALWAYS_INLINE void stp(RegisterID rt, RegisterID rt2, RegisterID rn, int simm = 0)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairOffset(MEMPAIROPSIZE_INT(datasize), false, MemOp_STORE, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void stnp(RegisterID rt, RegisterID rt2, RegisterID rn, int simm = 0)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairNonTemporal(MEMPAIROPSIZE_INT(datasize), false, MemOp_STORE, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void stp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, PairPostIndex simm)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairPostIndex(MEMPAIROPSIZE_FP(datasize), true, MemOp_STORE, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void stp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, PairPreIndex simm)
+ {
+ CHECK_DATASIZE();
+ insn(loadStoreRegisterPairPreIndex(MEMPAIROPSIZE_FP(datasize), true, MemOp_STORE, simm, rn, rt, rt2));
+ }
+
+ template<int datasize>
+ ALWAYS_INLINE void stp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, int simm = 0)
{
CHECK_DATASIZE();
- insn(loadStoreRegisterPairOffset(MEMPAIROPSIZE_INT(datasize), false, MemOp_STORE, pimm, rn, rt, rt2));
+ insn(loadStoreRegisterPairOffset(MEMPAIROPSIZE_FP(datasize), true, MemOp_STORE, simm, rn, rt, rt2));
}
template<int datasize>
- ALWAYS_INLINE void stnp(RegisterID rt, RegisterID rt2, RegisterID rn, unsigned pimm = 0)
+ ALWAYS_INLINE void stnp(FPRegisterID rt, FPRegisterID rt2, RegisterID rn, int simm = 0)
{
CHECK_DATASIZE();
- insn(loadStoreRegisterPairNonTemporal(MEMPAIROPSIZE_INT(datasize), false, MemOp_STORE, pimm, rn, rt, rt2));
+ insn(loadStoreRegisterPairNonTemporal(MEMPAIROPSIZE_FP(datasize), true, MemOp_STORE, simm, rn, rt, rt2));
}
template<int datasize>
@@ -3544,6 +3626,7 @@ protected:
ASSERT(opc == (opc & 1)); // Only load or store, load signed 64 is handled via size.
ASSERT(V || (size != MemPairOp_LoadSigned_32) || (opc == MemOp_LOAD)); // There isn't an integer store signed.
unsigned immedShiftAmount = memPairOffsetShift(V, size);
+ RELEASE_ASSERT(isValidSignedImm7(immediate, immedShiftAmount));
int imm7 = immediate >> immedShiftAmount;
ASSERT((imm7 << immedShiftAmount) == immediate && isInt<7>(imm7));
return (0x28800000 | size << 30 | V << 26 | opc << 22 | (imm7 & 0x7f) << 15 | rt2 << 10 | xOrSp(rn) << 5 | rt);
@@ -3575,6 +3658,7 @@ protected:
ASSERT(opc == (opc & 1)); // Only load or store, load signed 64 is handled via size.
ASSERT(V || (size != MemPairOp_LoadSigned_32) || (opc == MemOp_LOAD)); // There isn't an integer store signed.
unsigned immedShiftAmount = memPairOffsetShift(V, size);
+ RELEASE_ASSERT(isValidSignedImm7(immediate, immedShiftAmount));
int imm7 = immediate >> immedShiftAmount;
ASSERT((imm7 << immedShiftAmount) == immediate && isInt<7>(imm7));
return (0x29800000 | size << 30 | V << 26 | opc << 22 | (imm7 & 0x7f) << 15 | rt2 << 10 | xOrSp(rn) << 5 | rt);
@@ -3592,6 +3676,7 @@ protected:
ASSERT(opc == (opc & 1)); // Only load or store, load signed 64 is handled via size.
ASSERT(V || (size != MemPairOp_LoadSigned_32) || (opc == MemOp_LOAD)); // There isn't an integer store signed.
unsigned immedShiftAmount = memPairOffsetShift(V, size);
+ RELEASE_ASSERT(isValidSignedImm7(immediate, immedShiftAmount));
int imm7 = immediate >> immedShiftAmount;
ASSERT((imm7 << immedShiftAmount) == immediate && isInt<7>(imm7));
return (0x29000000 | size << 30 | V << 26 | opc << 22 | (imm7 & 0x7f) << 15 | rt2 << 10 | xOrSp(rn) << 5 | rt);
@@ -3609,6 +3694,7 @@ protected:
ASSERT(opc == (opc & 1)); // Only load or store, load signed 64 is handled via size.
ASSERT(V || (size != MemPairOp_LoadSigned_32) || (opc == MemOp_LOAD)); // There isn't an integer store signed.
unsigned immedShiftAmount = memPairOffsetShift(V, size);
+ RELEASE_ASSERT(isValidSignedImm7(immediate, immedShiftAmount));
int imm7 = immediate >> immedShiftAmount;
ASSERT((imm7 << immedShiftAmount) == immediate && isInt<7>(imm7));
return (0x28000000 | size << 30 | V << 26 | opc << 22 | (imm7 & 0x7f) << 15 | rt2 << 10 | xOrSp(rn) << 5 | rt);
diff --git a/Source/JavaScriptCore/assembler/AssemblerCommon.h b/Source/JavaScriptCore/assembler/AssemblerCommon.h
index a594823d6a4d..2e50ffdbc82a 100644
--- a/Source/JavaScriptCore/assembler/AssemblerCommon.h
+++ b/Source/JavaScriptCore/assembler/AssemblerCommon.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012-2019 Apple Inc. All rights reserved.
+ * Copyright (C) 2012-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -74,6 +74,15 @@ ALWAYS_INLINE bool isValidSignedImm9(int32_t value)
return isInt9(value);
}
+ALWAYS_INLINE bool isValidSignedImm7(int32_t value, int alignmentShiftAmount)
+{
+ constexpr int32_t disallowedHighBits = 32 - 7;
+ int32_t shiftedValue = value >> alignmentShiftAmount;
+ bool fitsIn7Bits = shiftedValue == ((shiftedValue << disallowedHighBits) >> disallowedHighBits);
+ bool hasCorrectAlignment = value == (shiftedValue << alignmentShiftAmount);
+ return fitsIn7Bits && hasCorrectAlignment;
+}
+
class ARM64LogicalImmediate {
public:
static ARM64LogicalImmediate create32(uint32_t value)
diff --git a/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h b/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
index f86aec1c5400..14e477fde3b8 100644
--- a/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
+++ b/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
@@ -1244,6 +1244,16 @@ public:
m_assembler.ldnp<64>(dest1, dest2, src, offset.m_value);
}
+ void loadPair64(RegisterID src, FPRegisterID dest1, FPRegisterID dest2)
+ {
+ loadPair64(src, TrustedImm32(0), dest1, dest2);
+ }
+
+ void loadPair64(RegisterID src, TrustedImm32 offset, FPRegisterID dest1, FPRegisterID dest2)
+ {
+ m_assembler.ldp<64>(dest1, dest2, src, offset.m_value);
+ }
+
void abortWithReason(AbortReason reason)
{
// It is safe to use dataTempRegister directly since this is a crashing JIT Assert.
@@ -1568,6 +1578,16 @@ public:
m_assembler.stnp<64>(src1, src2, dest, offset.m_value);
}
+ void storePair64(FPRegisterID src1, FPRegisterID src2, RegisterID dest)
+ {
+ storePair64(src1, src2, dest, TrustedImm32(0));
+ }
+
+ void storePair64(FPRegisterID src1, FPRegisterID src2, RegisterID dest, TrustedImm32 offset)
+ {
+ m_assembler.stp<64>(src1, src2, dest, offset.m_value);
+ }
+
void store32(RegisterID src, ImplicitAddress address)
{
if (tryStoreWithOffset<32>(src, address.base, address.offset))
diff --git a/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.cpp b/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.cpp
index 247c79dcb428..dfe09b671470 100644
--- a/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.cpp
+++ b/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012, 2016 Apple Inc. All rights reserved.
+ * Copyright (C) 2012-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -72,6 +72,8 @@ static const OpcodeGroupInitializer opcodeGroupList[] = {
OPCODE_GROUP_ENTRY(0x0a, A64DOpcodeLogicalShiftedRegister),
OPCODE_GROUP_ENTRY(0x0b, A64DOpcodeAddSubtractExtendedRegister),
OPCODE_GROUP_ENTRY(0x0b, A64DOpcodeAddSubtractShiftedRegister),
+ OPCODE_GROUP_ENTRY(0x0c, A64DOpcodeLoadStoreRegisterPair),
+ OPCODE_GROUP_ENTRY(0x0d, A64DOpcodeLoadStoreRegisterPair),
OPCODE_GROUP_ENTRY(0x11, A64DOpcodeAddSubtractImmediate),
OPCODE_GROUP_ENTRY(0x12, A64DOpcodeMoveWide),
OPCODE_GROUP_ENTRY(0x12, A64DOpcodeLogicalImmediate),
@@ -1363,9 +1365,9 @@ const char* A64DOpcodeLoadStoreRegisterPair::format()
appendInstructionName(thisOpName);
unsigned offsetShift;
if (vBit()) {
- appendFPRegisterName(rt(), size());
+ appendFPRegisterName(rt(), size() + 2);
appendSeparator();
- appendFPRegisterName(rt2(), size());
+ appendFPRegisterName(rt2(), size() + 2);
offsetShift = size() + 2;
} else {
if (!lBit())
diff --git a/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.h b/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.h
index e071babb8e01..fd9db7cae58e 100644
--- a/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.h
+++ b/Source/JavaScriptCore/disassembler/ARM64/A64DOpcode.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012-2019 Apple Inc. All rights reserved.
+ * Copyright (C) 2012-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -787,7 +787,7 @@ public:
class A64DOpcodeLoadStoreRegisterPair : public A64DOpcodeLoadStore {
public:
- static constexpr uint32_t mask = 0x3a000000;
+ static constexpr uint32_t mask = 0x38000000;
static constexpr uint32_t pattern = 0x28000000;
DEFINE_STATIC_FORMAT(A64DOpcodeLoadStoreRegisterPair, thisObj);
--
2.25.1