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/*
* Copyright (C) 2017-2023 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 "AirDisassembler.h"
#if ENABLE(B3_JIT)
#include "AirBasicBlock.h"
#include "AirCode.h"
#include "AirInst.h"
#include "CCallHelpers.h"
#include "Disassembler.h"
#include "LinkBuffer.h"
#include <wtf/TZoneMallocInlines.h>
namespace JSC { namespace B3 { namespace Air {
WTF_MAKE_TZONE_ALLOCATED_IMPL(Disassembler);
void Disassembler::startEntrypoint(CCallHelpers& jit)
{
m_entrypointStart = jit.labelIgnoringWatchpoints();
}
void Disassembler::endEntrypoint(CCallHelpers& jit)
{
m_entrypointEnd = jit.labelIgnoringWatchpoints();
}
void Disassembler::startLatePath(CCallHelpers& jit)
{
m_latePathStart = jit.labelIgnoringWatchpoints();
}
void Disassembler::endLatePath(CCallHelpers& jit)
{
m_latePathEnd = jit.labelIgnoringWatchpoints();
}
void Disassembler::startBlock(BasicBlock* block, CCallHelpers& jit)
{
UNUSED_PARAM(jit);
m_blocks.append(block);
}
void Disassembler::addInst(Inst* inst, MacroAssembler::Label start, MacroAssembler::Label end)
{
auto addResult = m_instToRange.add(inst, std::make_pair(start, end));
RELEASE_ASSERT(addResult.isNewEntry);
}
void Disassembler::dump(Code& code, PrintStream& out, LinkBuffer& linkBuffer, const char* airPrefix, const char* asmPrefix, const ScopedLambda<void(Inst&)>& doToEachInst)
{
void* codeStart = linkBuffer.entrypoint<DisassemblyPtrTag>().untaggedPtr();
void* codeEnd = bitwise_cast<uint8_t*>(codeStart) + linkBuffer.size();
auto dumpAsmRange = [&] (CCallHelpers::Label startLabel, CCallHelpers::Label endLabel) {
RELEASE_ASSERT(startLabel.isSet());
RELEASE_ASSERT(endLabel.isSet());
CodeLocationLabel<DisassemblyPtrTag> start = linkBuffer.locationOf<DisassemblyPtrTag>(startLabel);
CodeLocationLabel<DisassemblyPtrTag> end = linkBuffer.locationOf<DisassemblyPtrTag>(endLabel);
RELEASE_ASSERT(end.dataLocation<uintptr_t>() >= start.dataLocation<uintptr_t>());
disassemble(start, end.dataLocation<uintptr_t>() - start.dataLocation<uintptr_t>(), codeStart, codeEnd, asmPrefix, out);
};
for (BasicBlock* block : m_blocks) {
block->dumpHeader(out);
if (code.isEntrypoint(block))
dumpAsmRange(m_entrypointStart, m_entrypointEnd);
for (Inst& inst : *block) {
doToEachInst(inst);
out.print(airPrefix);
inst.dump(out);
out.print("\n");
auto iter = m_instToRange.find(&inst);
if (iter == m_instToRange.end()) {
RELEASE_ASSERT(&inst == &block->last());
continue;
}
auto pair = iter->value;
dumpAsmRange(pair.first, pair.second);
}
block->dumpFooter(out);
}
// FIXME: We could be better about various late paths. We can implement
// this later if we find a strong use for it.
out.print(tierName, "# Late paths\n");
dumpAsmRange(m_latePathStart, m_latePathEnd);
{
CodeLocationLabel<DisassemblyPtrTag> start = linkBuffer.locationOf<DisassemblyPtrTag>(m_latePathEnd);
size_t dumpedSize = start.dataLocation<uintptr_t>() - linkBuffer.entrypoint<DisassemblyPtrTag>().dataLocation<uintptr_t>();
if (dumpedSize < linkBuffer.size()) {
out.print(tierName, "# Remaining\n");
disassemble(start, linkBuffer.size() - dumpedSize, codeStart, codeEnd, asmPrefix, out);
}
}
}
} } } // namespace JSC::B3::Air
#endif // ENABLE(B3_JIT)
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