1 // Copyright 2017 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "src/wasm/memory-tracing.h"
6
7 #include <cinttypes>
8
9 #include "src/base/memory.h"
10 #include "src/base/strings.h"
11 #include "src/base/vector.h"
12
13 namespace v8 {
14 namespace internal {
15 namespace wasm {
16
TraceMemoryOperation(base::Optional<ExecutionTier> tier,const MemoryTracingInfo * info,int func_index,int position,uint8_t * mem_start)17 void TraceMemoryOperation(base::Optional<ExecutionTier> tier,
18 const MemoryTracingInfo* info, int func_index,
19 int position, uint8_t* mem_start) {
20 base::EmbeddedVector<char, 91> value;
21 auto mem_rep = static_cast<MachineRepresentation>(info->mem_rep);
22 Address address = reinterpret_cast<Address>(mem_start) + info->offset;
23 switch (mem_rep) {
24 #define TRACE_TYPE(rep, str, format, ctype1, ctype2) \
25 case MachineRepresentation::rep: \
26 base::SNPrintF(value, str ":" format, \
27 base::ReadLittleEndianValue<ctype1>(address), \
28 base::ReadLittleEndianValue<ctype2>(address)); \
29 break;
30 TRACE_TYPE(kWord8, " i8", "%d / %02x", uint8_t, uint8_t)
31 TRACE_TYPE(kWord16, "i16", "%d / %04x", uint16_t, uint16_t)
32 TRACE_TYPE(kWord32, "i32", "%d / %08x", uint32_t, uint32_t)
33 TRACE_TYPE(kWord64, "i64", "%" PRId64 " / %016" PRIx64, uint64_t, uint64_t)
34 TRACE_TYPE(kFloat32, "f32", "%f / %08x", float, uint32_t)
35 TRACE_TYPE(kFloat64, "f64", "%f / %016" PRIx64, double, uint64_t)
36 #undef TRACE_TYPE
37 case MachineRepresentation::kSimd128:
38 SNPrintF(value, "s128:%d %d %d %d / %08x %08x %08x %08x",
39 base::ReadLittleEndianValue<uint32_t>(address),
40 base::ReadLittleEndianValue<uint32_t>(address + 4),
41 base::ReadLittleEndianValue<uint32_t>(address + 8),
42 base::ReadLittleEndianValue<uint32_t>(address + 12),
43 base::ReadLittleEndianValue<uint32_t>(address),
44 base::ReadLittleEndianValue<uint32_t>(address + 4),
45 base::ReadLittleEndianValue<uint32_t>(address + 8),
46 base::ReadLittleEndianValue<uint32_t>(address + 12));
47 break;
48 default:
49 SNPrintF(value, "???");
50 }
51 const char* eng =
52 tier.has_value() ? ExecutionTierToString(tier.value()) : "?";
53 printf("%-11s func:%6d:0x%-6x%s %016" PRIuPTR " val: %s\n", eng, func_index,
54 position, info->is_store ? " store to" : "load from", info->offset,
55 value.begin());
56 }
57
58 } // namespace wasm
59 } // namespace internal
60 } // namespace v8
61