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/*
* Copyright (C) 2015-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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 "MacroAssemblerPrinter.h"
#if ENABLE(ASSEMBLER)
#include "MacroAssembler.h"
#include <inttypes.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
namespace Printer {
using CPUState = Probe::CPUState;
using RegisterID = MacroAssembler::RegisterID;
using FPRegisterID = MacroAssembler::FPRegisterID;
template<typename T> T nextID(T id) { return static_cast<T>(id + 1); }
void printAllRegisters(PrintStream& out, Context& context)
{
auto& cpu = context.probeContext.cpu;
unsigned charsToIndent = context.data.as<unsigned>();
auto indent = [&] () {
for (unsigned i = 0; i < charsToIndent; ++i)
out.print(" ");
};
#define INDENT indent()
INDENT; out.print("cpu: {\n");
#if USE(JSVALUE32_64)
#define INTPTR_HEX_VALUE_FORMAT "0x%08" PRIxPTR
#else
#define INTPTR_HEX_VALUE_FORMAT "0x%016" PRIxPTR
#endif
for (auto id = MacroAssembler::firstRegister(); id <= MacroAssembler::lastRegister(); id = nextID(id)) {
intptr_t value = static_cast<intptr_t>(cpu.gpr(id));
INDENT; out.printf(" %6s: " INTPTR_HEX_VALUE_FORMAT " %" PRIdPTR "\n", cpu.gprName(id).characters(), value, value);
}
for (auto id = MacroAssembler::firstSPRegister(); id <= MacroAssembler::lastSPRegister(); id = nextID(id)) {
intptr_t value = static_cast<intptr_t>(cpu.spr(id));
INDENT; out.printf(" %6s: " INTPTR_HEX_VALUE_FORMAT " %" PRIdPTR "\n", cpu.sprName(id).characters(), value, value);
}
#undef INTPTR_HEX_VALUE_FORMAT
for (auto id = MacroAssembler::firstFPRegister(); id <= MacroAssembler::lastFPRegister(); id = nextID(id)) {
uint64_t u = std::bit_cast<uint64_t>(cpu.fpr(id));
double d = cpu.fpr(id);
INDENT; out.printf(" %6s: 0x%016" PRIx64 " %.13g\n", cpu.fprName(id).characters(), u, d);
}
INDENT; out.print("}\n");
#undef INDENT
}
void printPCRegister(PrintStream& out, Context& context)
{
auto cpu = context.probeContext.cpu;
void* value = cpu.pc();
out.printf("pc:<%p %" PRIdPTR ">", value, std::bit_cast<intptr_t>(value));
}
void printRegisterID(PrintStream& out, Context& context)
{
RegisterID regID = context.data.as<RegisterID>();
const char* name = CPUState::gprName(regID);
intptr_t value = context.probeContext.gpr(regID);
out.printf("%s:<%p %" PRIdPTR ">", name, std::bit_cast<void*>(value), value);
}
void printFPRegisterID(PrintStream& out, Context& context)
{
FPRegisterID regID = context.data.as<FPRegisterID>();
const char* name = CPUState::fprName(regID);
double value = context.probeContext.fpr(regID);
out.printf("%s:<0x%016" PRIx64 " %.13g>", name, std::bit_cast<uint64_t>(value), value);
}
void printAddress(PrintStream& out, Context& context)
{
MacroAssembler::Address address = context.data.as<MacroAssembler::Address>();
RegisterID regID = address.base;
const char* name = CPUState::gprName(regID);
intptr_t value = context.probeContext.gpr(regID);
out.printf("Address{base:%s:<%p %" PRIdPTR ">, offset:<0x%x %d>", name, std::bit_cast<void*>(value), value, address.offset, address.offset);
}
void printMemory(PrintStream& out, Context& context)
{
const Memory& memory = context.data.as<Memory>();
uint8_t* ptr = nullptr;
switch (memory.addressType) {
case Memory::AddressType::Address: {
ptr = reinterpret_cast<uint8_t*>(context.probeContext.gpr(memory.u.address.base));
ptr += memory.u.address.offset;
break;
}
case Memory::AddressType::AbsoluteAddress: {
ptr = static_cast<uint8_t*>(const_cast<void*>(memory.u.absoluteAddress.m_ptr));
break;
}
}
if (memory.dumpStyle == Memory::SingleWordDump) {
if (memory.numBytes == sizeof(int8_t)) {
auto p = reinterpret_cast<int8_t*>(ptr);
out.printf("%p:<0x%02x %d>", p, *p, *p);
return;
}
if (memory.numBytes == sizeof(int16_t)) {
auto p = std::bit_cast<int16_t*>(ptr);
out.printf("%p:<0x%04x %d>", p, *p, *p);
return;
}
if (memory.numBytes == sizeof(int32_t)) {
auto p = std::bit_cast<int32_t*>(ptr);
out.printf("%p:<0x%08x %d>", p, *p, *p);
return;
}
if (memory.numBytes == sizeof(int64_t)) {
auto p = std::bit_cast<int64_t*>(ptr);
out.printf("%p:<0x%016" PRIx64 " %" PRId64 ">", p, *p, *p);
return;
}
// Else, unknown word size. Fall thru and dump in the generic way.
}
// Generic dump: dump rows of 16 bytes in 4 byte groupings.
size_t numBytes = memory.numBytes;
for (size_t i = 0; i < numBytes; i++) {
if (!(i % 16))
out.printf("%p: ", &ptr[i]);
else if (!(i % 4))
out.printf(" ");
out.printf("%02x", ptr[i]);
if (i % 16 == 15)
out.print("\n");
}
if (numBytes % 16 < 15)
out.print("\n");
}
void SYSV_ABI printCallback(Probe::Context& probeContext)
{
auto& out = WTF::dataFile();
PrintRecordList& list = *probeContext.arg<PrintRecordList*>();
for (size_t i = 0; i < list.size(); i++) {
auto& record = list[i];
Context context(probeContext, record.data);
record.printer(out, context);
}
}
} // namespace Printer
} // namespace JSC
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ENABLE(ASSEMBLER)
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