CSE2410 Fall 2014 Bounce

// Copyright 2006-2008 the V8 project authors. All rights reserved.

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// met:

//

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#include <stdlib.h>

#include "v8.h"

#include "disassembler.h"

#include "factory.h"

#include "macro-assembler.h"

#include "platform.h"

#include "serialize.h"

#include "cctest.h"

using namespace v8::internal;

typedef int (*F0)();

typedef int (*F1)(int x);

typedef int (*F2)(int x, int y);

static v8::Persistent<v8::Context> env;

static void InitializeVM() {

  if (env.IsEmpty()) {

    env = v8::Context::New();

  }

}

#define __ assm.

TEST(AssemblerIa320) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  __ mov(eax, Operand(esp, 4));

  __ add(eax, Operand(esp, 8));

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Object* code = Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value()));

  CHECK(code->IsCode());

#ifdef DEBUG

  Code::cast(code)->Print();

#endif

  F2 f = FUNCTION_CAST<F2>(Code::cast(code)->entry());

  int res = f(3, 4);

  ::printf("f() = %d\n", res);

  CHECK_EQ(7, res);

}

TEST(AssemblerIa321) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  Label L, C;

  __ mov(edx, Operand(esp, 4));

  __ xor_(eax, Operand(eax));  // clear eax

  __ jmp(&C);

  __ bind(&L);

  __ add(eax, Operand(edx));

  __ sub(Operand(edx), Immediate(1));

  __ bind(&C);

  __ test(edx, Operand(edx));

  __ j(not_zero, &L, taken);

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Object* code = Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value()));

  CHECK(code->IsCode());

#ifdef DEBUG

  Code::cast(code)->Print();

#endif

  F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());

  int res = f(100);

  ::printf("f() = %d\n", res);

  CHECK_EQ(5050, res);

}

TEST(AssemblerIa322) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  Label L, C;

  __ mov(edx, Operand(esp, 4));

  __ mov(eax, 1);

  __ jmp(&C);

  __ bind(&L);

  __ imul(eax, Operand(edx));

  __ sub(Operand(edx), Immediate(1));

  __ bind(&C);

  __ test(edx, Operand(edx));

  __ j(not_zero, &L, taken);

  __ ret(0);

  // some relocated stuff here, not executed

  __ mov(eax, Factory::true_value());

  __ jmp(NULL, RelocInfo::RUNTIME_ENTRY);

  CodeDesc desc;

  assm.GetCode(&desc);

  Object* code = Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value()));

  CHECK(code->IsCode());

#ifdef DEBUG

  Code::cast(code)->Print();

#endif

  F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());

  int res = f(10);

  ::printf("f() = %d\n", res);

  CHECK_EQ(3628800, res);

}

typedef int (*F3)(float x);

TEST(AssemblerIa323) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));

  { CpuFeatures::Scope fscope(CpuFeatures::SSE2);

    __ cvttss2si(eax, Operand(esp, 4));

    __ ret(0);

  }

  CodeDesc desc;

  assm.GetCode(&desc);

  Code* code =

      Code::cast(Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value())));

  // don't print the code - our disassembler can't handle cvttss2si

  // instead print bytes

  Disassembler::Dump(stdout,

                     code->instruction_start(),

                     code->instruction_start() + code->instruction_size());

  F3 f = FUNCTION_CAST<F3>(code->entry());

  int res = f(static_cast<float>(-3.1415));

  ::printf("f() = %d\n", res);

  CHECK_EQ(-3, res);

}

typedef int (*F4)(double x);

TEST(AssemblerIa324) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));

  CpuFeatures::Scope fscope(CpuFeatures::SSE2);

  __ cvttsd2si(eax, Operand(esp, 4));

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Code* code =

      Code::cast(Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value())));

  // don't print the code - our disassembler can't handle cvttsd2si

  // instead print bytes

  Disassembler::Dump(stdout,

                     code->instruction_start(),

                     code->instruction_start() + code->instruction_size());

  F4 f = FUNCTION_CAST<F4>(code->entry());

  int res = f(2.718281828);

  ::printf("f() = %d\n", res);

  CHECK_EQ(2, res);

}

static int baz = 42;

TEST(AssemblerIa325) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  __ mov(eax, Operand(reinterpret_cast<intptr_t>(&baz), RelocInfo::NONE));

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Code* code =

      Code::cast(Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value())));

  F0 f = FUNCTION_CAST<F0>(code->entry());

  int res = f();

  CHECK_EQ(42, res);

}

typedef double (*F5)(double x, double y);

TEST(AssemblerIa326) {

  InitializeVM();

  v8::HandleScope scope;

  CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));

  CpuFeatures::Scope fscope(CpuFeatures::SSE2);

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  __ movdbl(xmm0, Operand(esp, 1 * kPointerSize));

  __ movdbl(xmm1, Operand(esp, 3 * kPointerSize));

  __ addsd(xmm0, xmm1);

  __ mulsd(xmm0, xmm1);

  __ subsd(xmm0, xmm1);

  __ divsd(xmm0, xmm1);

  // Copy xmm0 to st(0) using eight bytes of stack.

  __ sub(Operand(esp), Immediate(8));

  __ movdbl(Operand(esp, 0), xmm0);

  __ fld_d(Operand(esp, 0));

  __ add(Operand(esp), Immediate(8));

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Code* code =

      Code::cast(Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value())));

#ifdef DEBUG

  ::printf("\n---\n");

  // don't print the code - our disassembler can't handle SSE instructions

  // instead print bytes

  Disassembler::Dump(stdout,

                     code->instruction_start(),

                     code->instruction_start() + code->instruction_size());

#endif

  F5 f = FUNCTION_CAST<F5>(code->entry());

  double res = f(2.2, 1.1);

  ::printf("f() = %f\n", res);

  CHECK(2.29 < res && res < 2.31);

}

typedef double (*F6)(int x);

TEST(AssemblerIa328) {

  InitializeVM();

  v8::HandleScope scope;

  CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));

  CpuFeatures::Scope fscope(CpuFeatures::SSE2);

  v8::internal::byte buffer[256];

  Assembler assm(buffer, sizeof buffer);

  __ mov(eax, Operand(esp, 4));

  __ cvtsi2sd(xmm0, Operand(eax));

  // Copy xmm0 to st(0) using eight bytes of stack.

  __ sub(Operand(esp), Immediate(8));

  __ movdbl(Operand(esp, 0), xmm0);

  __ fld_d(Operand(esp, 0));

  __ add(Operand(esp), Immediate(8));

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Code* code =

      Code::cast(Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value())));

  CHECK(code->IsCode());

#ifdef DEBUG

  Code::cast(code)->Print();

#endif

  F6 f = FUNCTION_CAST<F6>(Code::cast(code)->entry());

  double res = f(12);

  ::printf("f() = %f\n", res);

  CHECK(11.99 < res && res < 12.001);

}

typedef int (*F7)(double x, double y);

TEST(AssemblerIa329) {

  InitializeVM();

  v8::HandleScope scope;

  v8::internal::byte buffer[256];

  MacroAssembler assm(buffer, sizeof buffer);

  enum { kEqual = 0, kGreater = 1, kLess = 2, kNaN = 3, kUndefined = 4 };

  Label equal_l, less_l, greater_l, nan_l;

  __ fld_d(Operand(esp, 3 * kPointerSize));

  __ fld_d(Operand(esp, 1 * kPointerSize));

  __ FCmp();

  __ j(parity_even, &nan_l, taken);

  __ j(equal, &equal_l, taken);

  __ j(below, &less_l, taken);

  __ j(above, &greater_l, taken);

  __ mov(eax, kUndefined);

  __ ret(0);

  __ bind(&equal_l);

  __ mov(eax, kEqual);

  __ ret(0);

  __ bind(&greater_l);

  __ mov(eax, kGreater);

  __ ret(0);

  __ bind(&less_l);

  __ mov(eax, kLess);

  __ ret(0);

  __ bind(&nan_l);

  __ mov(eax, kNaN);

  __ ret(0);

  CodeDesc desc;

  assm.GetCode(&desc);

  Code* code =

      Code::cast(Heap::CreateCode(desc,

                                  NULL,

                                  Code::ComputeFlags(Code::STUB),

                                  Handle<Object>(Heap::undefined_value())));

  CHECK(code->IsCode());

#ifdef DEBUG

  Code::cast(code)->Print();

#endif

  F7 f = FUNCTION_CAST<F7>(Code::cast(code)->entry());

  CHECK_EQ(kLess, f(1.1, 2.2));

  CHECK_EQ(kEqual, f(2.2, 2.2));

  CHECK_EQ(kGreater, f(3.3, 2.2));

  CHECK_EQ(kNaN, f(OS::nan_value(), 1.1));

}

#undef __