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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/wasm/memory-tracing.h"
#include <cinttypes>
#include "src/base/memory.h"
#include "src/base/strings.h"
#include "src/base/vector.h"
namespace v8 {
namespace internal {
namespace wasm {
void TraceMemoryOperation(base::Optional<ExecutionTier> tier,
const MemoryTracingInfo* info, int func_index,
int position, uint8_t* mem_start) {
base::EmbeddedVector<char, 91> value;
auto mem_rep = static_cast<MachineRepresentation>(info->mem_rep);
Address address = reinterpret_cast<Address>(mem_start) + info->offset;
switch (mem_rep) {
#define TRACE_TYPE(rep, str, format, ctype1, ctype2) \
case MachineRepresentation::rep: \
base::SNPrintF(value, str ":" format, \
base::ReadLittleEndianValue<ctype1>(address), \
base::ReadLittleEndianValue<ctype2>(address)); \
break;
TRACE_TYPE(kWord8, " i8", "%d / %02x", uint8_t, uint8_t)
TRACE_TYPE(kWord16, "i16", "%d / %04x", uint16_t, uint16_t)
TRACE_TYPE(kWord32, "i32", "%d / %08x", uint32_t, uint32_t)
TRACE_TYPE(kWord64, "i64", "%" PRId64 " / %016" PRIx64, uint64_t, uint64_t)
TRACE_TYPE(kFloat32, "f32", "%f / %08x", float, uint32_t)
TRACE_TYPE(kFloat64, "f64", "%f / %016" PRIx64, double, uint64_t)
#undef TRACE_TYPE
case MachineRepresentation::kSimd128:
SNPrintF(value, "s128:%d %d %d %d / %08x %08x %08x %08x",
base::ReadLittleEndianValue<uint32_t>(address),
base::ReadLittleEndianValue<uint32_t>(address + 4),
base::ReadLittleEndianValue<uint32_t>(address + 8),
base::ReadLittleEndianValue<uint32_t>(address + 12),
base::ReadLittleEndianValue<uint32_t>(address),
base::ReadLittleEndianValue<uint32_t>(address + 4),
base::ReadLittleEndianValue<uint32_t>(address + 8),
base::ReadLittleEndianValue<uint32_t>(address + 12));
break;
default:
SNPrintF(value, "???");
}
const char* eng =
tier.has_value() ? ExecutionTierToString(tier.value()) : "?";
printf("%-11s func:%6d:0x%-6x%s %016" PRIuPTR " val: %s\n", eng, func_index,
position, info->is_store ? " store to" : "load from", info->offset,
value.begin());
}
} // namespace wasm
} // namespace internal
} // namespace v8
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