--- /dev/null
+/*
+ * Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "FTLStackMaps.h"
+
+#if ENABLE(FTL_JIT)
+
+#include "FTLLocation.h"
+#include <wtf/CommaPrinter.h>
+#include <wtf/DataLog.h>
+#include <wtf/ListDump.h>
+
+namespace JSC { namespace FTL {
+
+template<typename T>
+T readObject(StackMaps::ParseContext& context)
+{
+ T result;
+ result.parse(context);
+ return result;
+}
+
+void StackMaps::Constant::parse(StackMaps::ParseContext& context)
+{
+ integer = context.view->read<int64_t>(context.offset, true);
+}
+
+void StackMaps::Constant::dump(PrintStream& out) const
+{
+ out.printf("0x%016llx", static_cast<unsigned long long>(integer));
+}
+
+void StackMaps::StackSize::parse(StackMaps::ParseContext& context)
+{
+ switch (context.version) {
+ case 0:
+ functionOffset = context.view->read<uint32_t>(context.offset, true);
+ size = context.view->read<uint32_t>(context.offset, true);
+ break;
+
+ default:
+ functionOffset = context.view->read<uint64_t>(context.offset, true);
+ size = context.view->read<uint64_t>(context.offset, true);
+ break;
+ }
+}
+
+void StackMaps::StackSize::dump(PrintStream& out) const
+{
+ out.print("(off:", functionOffset, ", size:", size, ")");
+}
+
+void StackMaps::Location::parse(StackMaps::ParseContext& context)
+{
+ kind = static_cast<Kind>(context.view->read<uint8_t>(context.offset, true));
+ size = context.view->read<uint8_t>(context.offset, true);
+ dwarfReg = DWARFRegister(context.view->read<uint16_t>(context.offset, true));
+ this->offset = context.view->read<int32_t>(context.offset, true);
+}
+
+void StackMaps::Location::dump(PrintStream& out) const
+{
+ out.print("(", kind, ", ", dwarfReg, ", off:", offset, ", size:", size, ")");
+}
+
+GPRReg StackMaps::Location::directGPR() const
+{
+ return FTL::Location::forStackmaps(nullptr, *this).directGPR();
+}
+
+void StackMaps::Location::restoreInto(
+ MacroAssembler& jit, StackMaps& stackmaps, char* savedRegisters, GPRReg result) const
+{
+ FTL::Location::forStackmaps(&stackmaps, *this).restoreInto(jit, savedRegisters, result);
+}
+
+void StackMaps::LiveOut::parse(StackMaps::ParseContext& context)
+{
+ dwarfReg = DWARFRegister(context.view->read<uint16_t>(context.offset, true)); // regnum
+ context.view->read<uint8_t>(context.offset, true); // reserved
+ size = context.view->read<uint8_t>(context.offset, true); // size in bytes
+}
+
+void StackMaps::LiveOut::dump(PrintStream& out) const
+{
+ out.print("(", dwarfReg, ", ", size, ")");
+}
+
+bool StackMaps::Record::parse(StackMaps::ParseContext& context)
+{
+ int64_t id = context.view->read<int64_t>(context.offset, true);
+ ASSERT(static_cast<int32_t>(id) == id);
+ patchpointID = static_cast<uint32_t>(id);
+ if (static_cast<int32_t>(patchpointID) < 0)
+ return false;
+
+ instructionOffset = context.view->read<uint32_t>(context.offset, true);
+ flags = context.view->read<uint16_t>(context.offset, true);
+
+ unsigned length = context.view->read<uint16_t>(context.offset, true);
+ while (length--)
+ locations.append(readObject<Location>(context));
+
+ if (context.version >= 1)
+ context.view->read<uint16_t>(context.offset, true); // padding
+
+ unsigned numLiveOuts = context.view->read<uint16_t>(context.offset, true);
+ while (numLiveOuts--)
+ liveOuts.append(readObject<LiveOut>(context));
+
+ if (context.version >= 1) {
+ if (context.offset & 7) {
+ ASSERT(!(context.offset & 3));
+ context.view->read<uint32_t>(context.offset, true); // padding
+ }
+ }
+
+ return true;
+}
+
+void StackMaps::Record::dump(PrintStream& out) const
+{
+ out.print(
+ "(#", patchpointID, ", offset = ", instructionOffset, ", flags = ", flags,
+ ", locations = [", listDump(locations), "], liveOuts = [",
+ listDump(liveOuts), "])");
+}
+
+RegisterSet StackMaps::Record::locationSet() const
+{
+ RegisterSet result;
+ for (unsigned i = locations.size(); i--;) {
+ Reg reg = locations[i].dwarfReg.reg();
+ if (!reg)
+ continue;
+ result.set(reg);
+ }
+ return result;
+}
+
+RegisterSet StackMaps::Record::liveOutsSet() const
+{
+ RegisterSet result;
+ for (unsigned i = liveOuts.size(); i--;) {
+ LiveOut liveOut = liveOuts[i];
+ Reg reg = liveOut.dwarfReg.reg();
+ // FIXME: Either assert that size is not greater than sizeof(pointer), or actually
+ // save the high bits of registers.
+ // https://bugs.webkit.org/show_bug.cgi?id=130885
+ if (!reg) {
+ dataLog("Invalid liveOuts entry in: ", *this, "\n");
+ RELEASE_ASSERT_NOT_REACHED();
+ }
+ result.set(reg);
+ }
+ return result;
+}
+
+RegisterSet StackMaps::Record::usedRegisterSet() const
+{
+ RegisterSet result;
+ result.merge(locationSet());
+ result.merge(liveOutsSet());
+ return result;
+}
+
+bool StackMaps::parse(DataView* view)
+{
+ ParseContext context;
+ context.offset = 0;
+ context.view = view;
+
+ version = context.version = context.view->read<uint8_t>(context.offset, true);
+
+ context.view->read<uint8_t>(context.offset, true); // Reserved
+ context.view->read<uint8_t>(context.offset, true); // Reserved
+ context.view->read<uint8_t>(context.offset, true); // Reserved
+
+ uint32_t numFunctions;
+ uint32_t numConstants;
+ uint32_t numRecords;
+
+ numFunctions = context.view->read<uint32_t>(context.offset, true);
+ if (context.version >= 1) {
+ numConstants = context.view->read<uint32_t>(context.offset, true);
+ numRecords = context.view->read<uint32_t>(context.offset, true);
+ }
+ while (numFunctions--)
+ stackSizes.append(readObject<StackSize>(context));
+
+ if (!context.version)
+ numConstants = context.view->read<uint32_t>(context.offset, true);
+ while (numConstants--)
+ constants.append(readObject<Constant>(context));
+
+ if (!context.version)
+ numRecords = context.view->read<uint32_t>(context.offset, true);
+ while (numRecords--) {
+ Record record;
+ if (!record.parse(context))
+ return false;
+ records.append(record);
+ }
+
+ return true;
+}
+
+void StackMaps::dump(PrintStream& out) const
+{
+ out.print("Version:", version, ", StackSizes[", listDump(stackSizes), "], Constants:[", listDump(constants), "], Records:[", listDump(records), "]");
+}
+
+void StackMaps::dumpMultiline(PrintStream& out, const char* prefix) const
+{
+ out.print(prefix, "Version: ", version, "\n");
+ out.print(prefix, "StackSizes:\n");
+ for (unsigned i = 0; i < stackSizes.size(); ++i)
+ out.print(prefix, " ", stackSizes[i], "\n");
+ out.print(prefix, "Constants:\n");
+ for (unsigned i = 0; i < constants.size(); ++i)
+ out.print(prefix, " ", constants[i], "\n");
+ out.print(prefix, "Records:\n");
+ for (unsigned i = 0; i < records.size(); ++i)
+ out.print(prefix, " ", records[i], "\n");
+}
+
+StackMaps::RecordMap StackMaps::computeRecordMap() const
+{
+ RecordMap result;
+ for (unsigned i = records.size(); i--;)
+ result.add(records[i].patchpointID, Vector<Record>()).iterator->value.append(records[i]);
+ return result;
+}
+
+unsigned StackMaps::stackSize() const
+{
+ RELEASE_ASSERT(stackSizes.size() == 1);
+
+ return stackSizes[0].size;
+}
+
+} } // namespace JSC::FTL
+
+namespace WTF {
+
+using namespace JSC::FTL;
+
+void printInternal(PrintStream& out, StackMaps::Location::Kind kind)
+{
+ switch (kind) {
+ case StackMaps::Location::Unprocessed:
+ out.print("Unprocessed");
+ return;
+ case StackMaps::Location::Register:
+ out.print("Register");
+ return;
+ case StackMaps::Location::Direct:
+ out.print("Direct");
+ return;
+ case StackMaps::Location::Indirect:
+ out.print("Indirect");
+ return;
+ case StackMaps::Location::Constant:
+ out.print("Constant");
+ return;
+ case StackMaps::Location::ConstantIndex:
+ out.print("ConstantIndex");
+ return;
+ }
+ dataLog("Unrecognized kind: ", static_cast<int>(kind), "\n");
+ RELEASE_ASSERT_NOT_REACHED();
+}
+
+} // namespace WTF
+
+#endif // ENABLE(FTL_JIT)
+
projects / apple / javascriptcore.git / blobdiff