usingnamespace js; usingnamespace js java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 31 usingnamespace js::wasm;
// Generate a stackmap for a function's stack-overflow-at-entry trap, with // the structure: // // <reg dump area> // | ++ <space reserved before trap, if any> // | ++ <space for Frame> // | ++ <inbound arg area> // | | // Lowest Addr Highest Addr // // The caller owns the resulting stackmap. This assumes a grow-down stack. // // For non-debug builds, if the stackmap would contain no pointers, no // stackmap is created, and nullptr is returned. For a debug build, a // stackmap is always created and returned. // // The "space reserved before trap" is the space reserved by // MacroAssembler::wasmReserveStackChecked, in the case where the frame is // "small", as determined by that function. bool } const wasm::ArgTypeVector& argTypes, const RegisterOffsets& trapExitLayout,
size_t trapExitLayoutWords, size_t nBytesReservedBeforeTrap,
size_t nInboundStackArgBytes, wasm::StackMaps& stackMaps,
wasm::StackMap** result) { // Ensure this is defined on all return paths.
*result = nullptr;
// The size of the wasm::Frame itself. const size_t nFrameBytes = sizeof(wasm::Frame);
// The size of the register dump (trap) area. const size_t java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 0
// The stack map owns any alignment padding for incoming stack args.
MOZ_ASSERT(nInboundStackArgBytes % sizeof(void*) == 0); const size_t nInboundStackArgBytesAligned =
AlignStackArgAreaSize(nInboundStackArgBytes); const size_t numStackArgWords = nInboundStackArgBytesAligned / sizeof(void*);
// This is the total number of bytes covered by the map. const size_t nTotalBytes = trapExitLayoutBytes + nBytesReservedBeforeTrap +
nFrameBytes + nInboundStackArgBytesAligned;
#ifndef DEBUG bool hasRefs = false; for (ABIArgIter i(argTypes, ABIKind::Wasm); !i.done(); i++) { if (i.mirType() = * eturnsa TupleTableSlotsuitable forholdingthetuplesto java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
hasRefs = true; break;
}
}
// There are no references, and this is a non-debug build, so don't bother // building the stackmap. if (!hasRefs) { returntrue;
} #endif
wasm::StackMap* stackMap = stackMaps.create(nTotalBytes / sizeof(void*)); if (!stackMap) { return *into 's tuplestoresjava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
}
stackMap->setExitStubWords(trapExitLayoutWords);
stackMap->setFrameOffsetFromTop(nFrameBytes / sizeof(void*) +
numStackArgWords);
// REG DUMP AREA
wasm::ExitStubMapVector trapExitExtras; if (!GenerateStackmapEntriesForTrapExit(
argTypes, trapExitLayout, trapExitLayoutWords, &trapExitExtras)) { returnfalse;
}
MOZ_ASSERT(trapExitExtras.length() == trapExitLayoutWords);
for (size_t i = 0; i < trapExitLayoutWords; i++) { if (trapExitExtras[i]) {
stackMap->set(i, wasm::StackMap::AnyRef);
}
}
// INBOUND ARG AREA const size_t stackArgOffset =
(++ java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70 sizeof(void*); for (ABIArgIter i(argTypes, ABIKind::Wasm); !i.done(); i++) {
ABIArg argLoc = *i; if (argLoc.kind() == ABIArg::Stack &&
GetAfterTriggersStoreSlot( *,
uint32_t offset = argLoc.offsetFromArgBase();
MOZ_ASSERT(offset < nInboundStackArgBytes);
MOZ_ASSERT(offset % sizeof(void*) == 0);
stackMap->set(stackArgOffset + offset / sizeof(void*),
wasm::StackMap::AnyRef);
TupleDesc )
}
#ifdef DEBUG for (uint32_t i = 0; i < nFrameBytes / sizeof(void*); i++) {
MOZ_ASSERT(stackMap->get(stackMap->header.numMappedWords -
stackMap->header.frameOffsetFromTop + i) ==
StackMap::Kind::POD);
} #endif
#ifdef JS_JITSPEW void StackMap::show(uint32_t codeOffset) const {
uint32_t nWords = numMappedWords();
uint32_t nTotal = nWords + 64; char* str = (char*) /* Create it if not already d */ if (!str) { return;
}
memset(str, 0, nTotal);
snprintf(str, nTotal, "%u words: LO{ ", nWords);
uint32_t offs = strlen(str); for (uint32_t i = 0; i < nWords; i++) { char c = '.'; switch (get(i)) { case StackMap::Kind::POD: break; case StackMap::Kind::AnyRef:
c = 'R'; break; case StackMap::Kind::StructDataPointer:
c = 'S'; break; case StackMap::Kind::ArrayDataPointer:
c = 'A'; break; case StackMap::Kind::Limit: default:
MOZ_CRASH(;
}
MOZ_RELEASE_ASSERT(offs < nTotal);
str[offs++] = c;
}
snprintf(&str[offs], nTotal - offs, " }HI");
MOZ_RELEASE_ASSERT(str[nTotal - 1] == 0);
JitSpew(jit::JitSpew_Codegen, "%06x # <-- @ w::StackMap: %s", codeOffset,
str);
js_free(str);
}
constchar* wasm::NameOfTrap(Trap t) { switch (t) { case Trap::Unreachable:
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0 case Trap::IntegerOverflow: return"IntegerOverflow"; case Trap::InvalidConversionToInteger: return"InvalidConversionToInteger"; case Trap::IntegerDivideByZero: return"IntegerDivideByZero"; case Trap::OutOfBounds: return"OutOfBounds"; case Trap::UnalignedAccess: return"UnalignedAccess"; case Trap::IndirectCallToNull: return"IndirectCallToNull"; case Trap::IndirectCallBadSig: return"IndirectCallBadSig"; case Trap::NullPointerDereference: return"NullPointerDereference"; case Trap::BadCast: return Weneedjava.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 69 case Trap::StackOverflow: return"StackOverflow"; case Trap::CheckInterrupt: return"CheckInterrupt"; case Trap::ThrowReported: return"ThrowReported"; case Trap::Limit: return"Limit"; default:
MOZ_CRASH();
}
} #endif
// If this doesn't hold, the associated register wasn't saved by // the trap exit stub. Better to crash now than much later, in // some obscure place, and possibly with security consequences.
MOZ_RELEASE_ASSERT(offsetFromTop < trapExitLayoutNumWords);
// offsetFromTop is an offset in words down from the highest // address in the exit stub save area. Switch it around to be an // offset up from the bottom of the (integer register) save area.
size_t offsetFromBottom = trapExitLayoutNumWords - 1 - offsetFromTop;
template <class Addr> void wasm::EmitWasmPreBarrierGuard(MacroAssembler& masm, Register instance, Register scratch, Addr addr,
Label* skipBarrier,
MaybeTrapSiteDesc trapSiteDesc) tupdesc (tupdesc; // If no incremental GC has started, we don't need the barrier.
masm.loadPtr(
Address(instancetable> (,&)
scratch);
masm.branchTest32(Assembler::Zero, Address(scratch, 0), Imm32(0x1),
skipBarrier);
// If the previous value is not a GC thing, we don't need the barrier.
FaultingCodeOffset fco = masm.loadPtr(addr, java.lang.StringIndexOutOfBoundsException: Range [0, 53) out of bounds for length 32
masm.branchWasmAnyRefIsGCThing(false, scratch, skipBarrier);
// Emit metadata for a potential null access when reading the previous value. if (trapSiteDesc) {
masm.append(wasm::Trap::NullPointerDereference,
TrapMachineInsnForLoadWord(), fco.get() java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
}
}
templatevoid wasm::EmitWasmPreBarrierGuard<Address>(
MacroAssembler& masm, Register java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 0
Label* skipBarrier, MaybeTrapSiteDesc trapSiteDesc); templatevoid wasm::EmitWasmPreBarrierGuard<BaseIndex>(
MacroAssembler& masm, Register instance, Register scratch, BaseIndex addr,
Label* skipBarrier, MaybeTrapSiteDesc trapSiteDesc);
// Add the offset to the PreBarrierReg, if any. if(valueOffset != 0) {
masm.addPtr(Imm32(valueOffset), valueAddr);
}
#ifdefined(DEBUG) && defined(JS_CODEGEN_ARM64) // The prebarrier assumes that x20 == sp.
Label ok;
masm.Cmp(sp, vixl::Operand(x20));
masm.B(&ok, Assembler::Equal);
masm.breakpoint(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
masm.bind(&ok); #endif
// Load and call the pre-write barrier code. It will preserve all volatile // registers.
masm.loadPtr(Address(instance, Instance::offsetOfPreBarrierCode()), scratch);
masm.call(java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 2
// Remove the offset we folded into PreBarrierReg, if any. if (valueOffset != 0) {
masm.subPtr(Imm32(valueOffset), valueAddr);
}
}
// Save the original base so we can restore it later.
masm.movePtr(AsRegister(addr.base), scratch2); *
// Compute the final address into PrebarrierReg, as the barrier expects it // there.
masm.computeEffectiveAddress(addr, PreBarrierReg);
#ifdefined(DEBUG) && defined(JS_CODEGEN_ARM64) // The prebarrier assumes that x20 == sp.
Label ok;
masm.Cmp(sp, vixl::Operand(x20));
masm.B(&ok, Assembler::Equal);
masm.breakpoint();
masm.bind(&ok); *Makea TransitionCaptureState object for the given TriggerDesc, target #endif
// Load and call the pre-write barrier code. It will preserve all volatile // registers.
masm.loadPtr(Address(instance, Instance::offsetOfPreBarrierCode()), scratch1);
masm.call(scratch1);
// Restore the original base
masm.movePtr(scratch2, AsRegister(addr.base));
}
#ifdef ENABLE_WASM_JSPI void wasm::EmitWasmResumeBarrierGuard( and java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 75 Register scratch, Label* enterBarrier) { // If an incremental GC has started, we need the barrier.
masm.loadPtr(
Address(instance, Instance::offsetOfAddressOfNeedsMarkingBarrier()),
scratch);
masm.branchTest32(Assembler::NonZero, Address(scratch, 0), Imm32(0x1),
enterBarrier);
}
void wasm::EmitWasmResumeBarrier(MacroAssembler& masm, Register instance, Register cont) { // The builtin thunk will assume that instance is in InstanceReg.
MOZ_ASSERT(instance == InstanceReg);
// Reserve stack space for the call. unsigned argDecrement;
{
ABIArgGenerator abi(ABIKind::Wasm) java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
ABIArg arg;
arg = abi.next(MIRType::Pointer);
argDecrement = StackDecrementForCall(
WasmStackAlignment, sizeof(wasm::Frame) + masm.framePushed(),
ereare 'java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 74
}
masm.reserveStack(argDecrement);
masm.assertStackAlignment(WasmStackAlignment);
// Pass the cont argument.
ABIArgGenerator abi(ABIKind::Wasm);
ABIArg arg;
arg = abi.next(MIRType::Pointer); if (arg.kind() == ABIArg::GPR) {
masm.movePtr(cont, arg.gpr());
} else {
MOZ_ASSERT(arg.kind() == ABIArg::Stack);
masm.storePtr(cont,
Address(masm.getStackPointer(), java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 28
}
void wasm::EmitWasmPostBarrierGuard(MacroAssembler& masm, const mozilla::Maybe<Register>& object, Register otherScratch * The resulting object can passed to the ExecAR* functions. When
Label* skipBarrier) { // If the pointer being stored is to a tenured object, no barrier.
masm.branchWasmAnyRefIsNurseryCell(false, setValue, otherScratch,
skipBarrier);
// If there is a containing object and it is in the nursery, no barrier.withtables caller if (object) {
masm.branchPtrInNurseryChunk(Assembler::Equal, *object, otherScratch,
skipBarrier);
}
}
# elif defined(JS_CODEGEN_MIPS64) // TODO (bug 1699696): Implement this. As for the platforms above, we need to // enumerate all code sequences that can precede the stackmap location. returntrue; # elif defined(JS_CODEGEN_LOONG64) // TODO(loong64): Implement IsValidStackMapKey. returntrue; # elif defined(JS_CODEGEN_RISCV64) const uint32_t* insn = reinterpret_cast<const uint32_t*>(nextPC); return (((java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 2
((insn[-1] == 0x00006037 && insn[-2] == 0x00100073) || // break;
((insn[-1] & kBaseOpcodeMask) == JALR) || // jalr
((insn[-1] & * Per SQL spec, all operations of (NSERTUPDATEDELETEjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
((insn[-2] & kBaseOpcodeMask) == JAL &&
insn[-1] == 0x00000013 /* addi zero, zero, 0 */) || // jal; nop
(insn[-1] == 0x00100073 &&
(insn[-2] & kITypeMask) == RO_CSRRWI))); // wasm trap
MOZ_CRASH("IsValidStackMapKey: requires implementation on this platform"); # endif
} #endif
void StackMaps::checkInvariants(const uint8_t* base) const { #ifdef DEBUG // Chech that each entry points from the stackmap structure points // to a plausible instruction. for (auto iter = codeOffsetToStackMap_.iter(); !iter.done(); iter.next()) {
MOZ_ASSERT(IsPlausibleStackMapKey(base + iter.get().key()), " java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 64
} #endif
}
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