// Copyright 2016 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 <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "src/wasm/wasm-macro-gen.h"
#include "src/wasm/wasm-interpreter.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/value-helper.h"
#include "test/cctest/wasm/test-signatures.h"
#include "test/cctest/wasm/wasm-run-utils.h"
using namespace v8::base;
using namespace v8::internal;
using namespace v8::internal::compiler;
using namespace v8::internal::wasm;
namespace v8 {
namespace internal {
namespace wasm {
TEST(Run_WasmInt8Const_i) {
WasmRunner<int32_t> r(kExecuteInterpreted);
const byte kExpectedValue = 109;
// return(kExpectedValue)
BUILD(r, WASM_I8(kExpectedValue));
CHECK_EQ(kExpectedValue, r.Call());
}
TEST(Run_WasmIfElse) {
WasmRunner<int32_t> r(kExecuteInterpreted, MachineType::Int32());
BUILD(r, WASM_IF_ELSE(WASM_GET_LOCAL(0), WASM_I8(9), WASM_I8(10)));
CHECK_EQ(10, r.Call(0));
CHECK_EQ(9, r.Call(1));
}
TEST(Run_WasmIfReturn) {
WasmRunner<int32_t> r(kExecuteInterpreted, MachineType::Int32());
BUILD(r, WASM_IF(WASM_GET_LOCAL(0), WASM_RETURN1(WASM_I8(77))), WASM_I8(65));
CHECK_EQ(65, r.Call(0));
CHECK_EQ(77, r.Call(1));
}
TEST(Run_WasmNopsN) {
const int kMaxNops = 10;
byte code[kMaxNops + 2];
for (int nops = 0; nops < kMaxNops; nops++) {
byte expected = static_cast<byte>(20 + nops);
memset(code, kExprNop, sizeof(code));
code[nops] = kExprI8Const;
code[nops + 1] = expected;
WasmRunner<int32_t> r(kExecuteInterpreted);
r.Build(code, code + nops + 2);
CHECK_EQ(expected, r.Call());
}
}
TEST(Run_WasmConstsN) {
const int kMaxConsts = 10;
byte code[kMaxConsts * 2];
for (int count = 1; count < kMaxConsts; count++) {
for (int i = 0; i < count; i++) {
code[i * 2] = kExprI8Const;
code[i * 2 + 1] = static_cast<byte>(count * 10 + i);
}
byte expected = static_cast<byte>(count * 11 - 1);
WasmRunner<int32_t> r(kExecuteInterpreted);
r.Build(code, code + (count * 2));
CHECK_EQ(expected, r.Call());
}
}
TEST(Run_WasmBlocksN) {
const int kMaxNops = 10;
const int kExtra = 4;
byte code[kMaxNops + kExtra];
for (int nops = 0; nops < kMaxNops; nops++) {
byte expected = static_cast<byte>(30 + nops);
memset(code, kExprNop, sizeof(code));
code[0] = kExprBlock;
code[1 + nops] = kExprI8Const;
code[1 + nops + 1] = expected;
code[1 + nops + 2] = kExprEnd;
WasmRunner<int32_t> r(kExecuteInterpreted);
r.Build(code, code + nops + kExtra);
CHECK_EQ(expected, r.Call());
}
}
TEST(Run_WasmBlockBreakN) {
const int kMaxNops = 10;
const int kExtra = 6;
byte code[kMaxNops + kExtra];
for (int nops = 0; nops < kMaxNops; nops++) {
// Place the break anywhere within the block.
for (int index = 0; index < nops; index++) {
memset(code, kExprNop, sizeof(code));
code[0] = kExprBlock;
code[sizeof(code) - 1] = kExprEnd;
int expected = nops * 11 + index;
code[1 + index + 0] = kExprI8Const;
code[1 + index + 1] = static_cast<byte>(expected);
code[1 + index + 2] = kExprBr;
code[1 + index + 3] = ARITY_1;
code[1 + index + 4] = 0;
WasmRunner<int32_t> r(kExecuteInterpreted);
r.Build(code, code + kMaxNops + kExtra);
CHECK_EQ(expected, r.Call());
}
}
}
TEST(Run_Wasm_nested_ifs_i) {
WasmRunner<int32_t> r(kExecuteInterpreted, MachineType::Int32(),
MachineType::Int32());
BUILD(r, WASM_IF_ELSE(
WASM_GET_LOCAL(0),
WASM_IF_ELSE(WASM_GET_LOCAL(1), WASM_I8(11), WASM_I8(12)),
WASM_IF_ELSE(WASM_GET_LOCAL(1), WASM_I8(13), WASM_I8(14))));
CHECK_EQ(11, r.Call(1, 1));
CHECK_EQ(12, r.Call(1, 0));
CHECK_EQ(13, r.Call(0, 1));
CHECK_EQ(14, r.Call(0, 0));
}
// Make tests more robust by not hard-coding offsets of various operations.
// The {Find} method finds the offsets for the given bytecodes, returning
// the offsets in an array.
SmartArrayPointer<int> Find(byte* code, size_t code_size, int n, ...) {
va_list vl;
va_start(vl, n);
SmartArrayPointer<int> offsets(new int[n]);
for (int i = 0; i < n; i++) {
offsets[i] = -1;
}
int pos = 0;
WasmOpcode current = static_cast<WasmOpcode>(va_arg(vl, int));
for (size_t i = 0; i < code_size; i++) {
if (code[i] == current) {
offsets[pos++] = static_cast<int>(i);
if (pos == n) break;
current = static_cast<WasmOpcode>(va_arg(vl, int));
}
}
va_end(vl);
return offsets;
}
TEST(Breakpoint_I32Add) {
static const int kLocalsDeclSize = 1;
static const int kNumBreakpoints = 3;
byte code[] = {WASM_I32_ADD(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1))};
SmartArrayPointer<int> offsets =
Find(code, sizeof(code), kNumBreakpoints, kExprGetLocal, kExprGetLocal,
kExprI32Add);
WasmRunner<int32_t> r(kExecuteInterpreted, MachineType::Uint32(),
MachineType::Uint32());
r.Build(code, code + arraysize(code));
WasmInterpreter* interpreter = r.interpreter();
WasmInterpreter::Thread* thread = interpreter->GetThread(0);
for (int i = 0; i < kNumBreakpoints; i++) {
interpreter->SetBreakpoint(r.function(), kLocalsDeclSize + offsets[i],
true);
}
FOR_UINT32_INPUTS(a) {
for (uint32_t b = 11; b < 3000000000u; b += 1000000000u) {
thread->Reset();
WasmVal args[] = {WasmVal(*a), WasmVal(b)};
thread->PushFrame(r.function(), args);
for (int i = 0; i < kNumBreakpoints; i++) {
thread->Run(); // run to next breakpoint
// Check the thread stopped at the right pc.
CHECK_EQ(WasmInterpreter::PAUSED, thread->state());
CHECK_EQ(kLocalsDeclSize + offsets[i], thread->GetBreakpointPc());
}
thread->Run(); // run to completion
// Check the thread finished with the right value.
CHECK_EQ(WasmInterpreter::FINISHED, thread->state());
uint32_t expected = (*a) + (b);
CHECK_EQ(expected, thread->GetReturnValue().to<uint32_t>());
}
}
}
TEST(Step_I32Mul) {
static const int kTraceLength = 4;
byte code[] = {WASM_I32_MUL(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1))};
WasmRunner<int32_t> r(kExecuteInterpreted, MachineType::Uint32(),
MachineType::Uint32());
r.Build(code, code + arraysize(code));
WasmInterpreter* interpreter = r.interpreter();
WasmInterpreter::Thread* thread = interpreter->GetThread(0);
FOR_UINT32_INPUTS(a) {
for (uint32_t b = 33; b < 3000000000u; b += 1000000000u) {
thread->Reset();
WasmVal args[] = {WasmVal(*a), WasmVal(b)};
thread->PushFrame(r.function(), args);
// Run instructions one by one.
for (int i = 0; i < kTraceLength - 1; i++) {
thread->Step();
// Check the thread stopped.
CHECK_EQ(WasmInterpreter::PAUSED, thread->state());
}
// Run last instruction.
thread->Step();
// Check the thread finished with the right value.
CHECK_EQ(WasmInterpreter::FINISHED, thread->state());
uint32_t expected = (*a) * (b);
CHECK_EQ(expected, thread->GetReturnValue().to<uint32_t>());
}
}
}
TEST(Breakpoint_I32And_disable) {
static const int kLocalsDeclSize = 1;
static const int kNumBreakpoints = 1;
byte code[] = {WASM_I32_AND(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1))};
SmartArrayPointer<int> offsets =
Find(code, sizeof(code), kNumBreakpoints, kExprI32And);
WasmRunner<int32_t> r(kExecuteInterpreted, MachineType::Uint32(),
MachineType::Uint32());
r.Build(code, code + arraysize(code));
WasmInterpreter* interpreter = r.interpreter();
WasmInterpreter::Thread* thread = interpreter->GetThread(0);
FOR_UINT32_INPUTS(a) {
for (uint32_t b = 11; b < 3000000000u; b += 1000000000u) {
// Run with and without breakpoints.
for (int do_break = 0; do_break < 2; do_break++) {
interpreter->SetBreakpoint(r.function(), kLocalsDeclSize + offsets[0],
do_break);
thread->Reset();
WasmVal args[] = {WasmVal(*a), WasmVal(b)};
thread->PushFrame(r.function(), args);
if (do_break) {
thread->Run(); // run to next breakpoint
// Check the thread stopped at the right pc.
CHECK_EQ(WasmInterpreter::PAUSED, thread->state());
CHECK_EQ(kLocalsDeclSize + offsets[0], thread->GetBreakpointPc());
}
thread->Run(); // run to completion
// Check the thread finished with the right value.
CHECK_EQ(WasmInterpreter::FINISHED, thread->state());
uint32_t expected = (*a) & (b);
CHECK_EQ(expected, thread->GetReturnValue().to<uint32_t>());
}
}
}
}
} // namespace wasm
} // namespace internal
} // namespace v8