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v8/test/cctest/test-isolate-independent-builtins.cc
jgruber f45eca794c [builtins] Disable embedded builtins on mips and mips64 
Mips big-endian builders don't like embedded builtins. Disable embedded
builtins on mips for now and defer investigation for when there's time.

Example failures:
https://build.chromium.org/p/client.v8.ports/builders/V8%20Mips%20-%20big%20endian%20-%20nosnap%20-%201/builds/6666
https://build.chromium.org/p/client.v8.ports/builders/V8%20Mips%20-%20big%20endian%20-%20nosnap%20-%202/builds/5188

Two issues: test failures due to big-endianness and mismatches in the
isolate-independence list.

TBR=yangguo@chromium.org

Bug: v8:6666
Change-Id: I73750668c03c132a9bb4d4ae9ed2bafd6d91f816
Reviewed-on: https://chromium-review.googlesource.com/955699
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51848}
2018-03-09 15:39:37 +00:00

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// Copyright 2018 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 "test/cctest/cctest.h"
#include "src/assembler-inl.h"
#include "src/handles-inl.h"
#include "src/isolate.h"
#include "src/macro-assembler-inl.h"
#include "src/simulator.h"
#include "src/snapshot/macros.h"
#include "src/snapshot/snapshot.h"
// To generate the binary files for the test function, enable this section and
// run GenerateTestFunctionData once on each arch.
#define GENERATE_TEST_FUNCTION_DATA false
namespace v8 {
namespace internal {
namespace test_isolate_independent_builtins {
#ifdef V8_EMBEDDED_BUILTINS
UNINITIALIZED_TEST(VerifyBuiltinsIsolateIndependence) {
FLAG_stress_off_heap_code = false; // Disable off-heap trampolines.
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* v8_isolate = v8::Isolate::New(create_params);
{
v8::Isolate::Scope isolate_scope(v8_isolate);
v8::internal::Isolate* isolate =
reinterpret_cast<v8::internal::Isolate*>(v8_isolate);
HandleScope handle_scope(isolate);
Snapshot::EnsureAllBuiltinsAreDeserialized(isolate);
// TODO(jgruber,v8:6666): Investigate CONST_POOL and VENEER_POOL kinds.
// CONST_POOL is currently relevant on {arm,arm64,mips,mips64,ppc,s390}.
// Rumors are it will also become relevant on x64. My
// understanding is that we should be fine if we ensure it
// doesn't contain heap constants and we use pc-relative
// addressing.
// VENEER_POOL is arm64-only. From what I've seen, jumps are pc-relative
// and stay within the same code object and thus should be
// isolate-independent.
// Build a white-list of all isolate-independent RelocInfo entry kinds.
constexpr int all_real_modes_mask =
(1 << (RelocInfo::LAST_REAL_RELOC_MODE + 1)) - 1;
constexpr int mode_mask =
all_real_modes_mask & ~RelocInfo::ModeMask(RelocInfo::COMMENT) &
~RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE) &
~RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE_ENCODED) &
~RelocInfo::ModeMask(RelocInfo::CONST_POOL) &
~RelocInfo::ModeMask(RelocInfo::VENEER_POOL);
STATIC_ASSERT(RelocInfo::LAST_REAL_RELOC_MODE == RelocInfo::VENEER_POOL);
STATIC_ASSERT(RelocInfo::ModeMask(RelocInfo::COMMENT) ==
(1 << RelocInfo::COMMENT));
STATIC_ASSERT(
mode_mask ==
(RelocInfo::ModeMask(RelocInfo::CODE_TARGET) |
RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) |
RelocInfo::ModeMask(RelocInfo::WASM_CONTEXT_REFERENCE) |
RelocInfo::ModeMask(RelocInfo::WASM_FUNCTION_TABLE_SIZE_REFERENCE) |
RelocInfo::ModeMask(RelocInfo::WASM_GLOBAL_HANDLE) |
RelocInfo::ModeMask(RelocInfo::WASM_CALL) |
RelocInfo::ModeMask(RelocInfo::JS_TO_WASM_CALL) |
RelocInfo::ModeMask(RelocInfo::RUNTIME_ENTRY) |
RelocInfo::ModeMask(RelocInfo::EXTERNAL_REFERENCE)));
constexpr bool kVerbose = false;
bool found_mismatch = false;
for (int i = 0; i < Builtins::builtin_count; i++) {
Code* code = isolate->builtins()->builtin(i);
if (kVerbose) {
printf("%s %s\n", Builtins::KindNameOf(i),
isolate->builtins()->name(i));
}
bool is_isolate_independent = true;
for (RelocIterator it(code, mode_mask); !it.done(); it.next()) {
is_isolate_independent = false;
#ifdef ENABLE_DISASSEMBLER
if (kVerbose) {
RelocInfo::Mode mode = it.rinfo()->rmode();
printf(" %s\n", RelocInfo::RelocModeName(mode));
}
#endif
}
// Relaxed condition only checks whether the isolate-independent list is
// valid, not whether it is complete. This is to avoid constant work
// updating the list.
bool should_be_isolate_independent = Builtins::IsIsolateIndependent(i);
if (should_be_isolate_independent && !is_isolate_independent) {
found_mismatch = true;
printf("%s %s expected: %d, is: %d\n", Builtins::KindNameOf(i),
isolate->builtins()->name(i), should_be_isolate_independent,
is_isolate_independent);
}
}
CHECK(!found_mismatch);
}
v8_isolate->Dispose();
}
// V8_CC_MSVC is true for both MSVC and clang on windows. clang can handle
// __asm__-style inline assembly but MSVC cannot, and thus we need a more
// precise compiler detection that can distinguish between the two. clang on
// windows sets both __clang__ and _MSC_VER, MSVC sets only _MSC_VER.
#if defined(_MSC_VER) && !defined(__clang__)
#define V8_COMPILER_IS_MSVC
#endif
#ifndef V8_COMPILER_IS_MSVC
#if GENERATE_TEST_FUNCTION_DATA
// Arch-specific defines.
#if V8_TARGET_ARCH_IA32
#define TEST_FUNCTION_FILE "f-ia32.bin"
#elif V8_TARGET_ARCH_X64 && _WIN64
#define TEST_FUNCTION_FILE "f-x64-win.bin"
#elif V8_TARGET_ARCH_X64
#define TEST_FUNCTION_FILE "f-x64.bin"
#elif V8_TARGET_ARCH_ARM64
#define TEST_FUNCTION_FILE "f-arm64.bin"
#elif V8_TARGET_ARCH_ARM
#define TEST_FUNCTION_FILE "f-arm.bin"
#elif V8_TARGET_ARCH_PPC
#define TEST_FUNCTION_FILE "f-ppc.bin"
#elif V8_TARGET_ARCH_MIPS
#define TEST_FUNCTION_FILE "f-mips.bin"
#elif V8_TARGET_ARCH_MIPS64
#define TEST_FUNCTION_FILE "f-mips64.bin"
#elif V8_TARGET_ARCH_S390
#define TEST_FUNCTION_FILE "f-s390.bin"
#else
#error "Unknown architecture."
#endif
#define __ masm.
TEST(GenerateTestFunctionData) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
#if V8_TARGET_ARCH_IA32
v8::internal::byte buffer[256];
Assembler masm(isolate, buffer, sizeof(buffer));
__ mov(eax, Operand(esp, 4));
__ add(eax, Operand(esp, 8));
__ ret(0);
#elif V8_TARGET_ARCH_X64
size_t allocated;
byte* buffer = AllocateAssemblerBuffer(&allocated);
Assembler masm(isolate, buffer, static_cast<int>(allocated));
#ifdef _WIN64
static const Register arg1 = rcx;
static const Register arg2 = rdx;
#else
static const Register arg1 = rdi;
static const Register arg2 = rsi;
#endif
__ movq(rax, arg2);
__ addq(rax, arg1);
__ ret(0);
#elif V8_TARGET_ARCH_ARM64
MacroAssembler masm(isolate, nullptr, 0,
v8::internal::CodeObjectRequired::kYes);
__ Add(x0, x0, x1);
__ Ret();
#elif V8_TARGET_ARCH_ARM
Assembler masm(isolate, nullptr, 0);
__ add(r0, r0, Operand(r1));
__ mov(pc, Operand(lr));
#elif V8_TARGET_ARCH_PPC
Assembler masm(isolate, nullptr, 0);
__ function_descriptor();
__ add(r3, r3, r4);
__ blr();
#elif V8_TARGET_ARCH_MIPS
MacroAssembler masm(isolate, nullptr, 0,
v8::internal::CodeObjectRequired::kYes);
__ addu(v0, a0, a1);
__ jr(ra);
__ nop();
#elif V8_TARGET_ARCH_MIPS64
MacroAssembler masm(isolate, nullptr, 0,
v8::internal::CodeObjectRequired::kYes);
__ addu(v0, a0, a1);
__ jr(ra);
__ nop();
#elif V8_TARGET_ARCH_S390
Assembler masm(isolate, nullptr, 0);
__ agr(r2, r3);
__ b(r14);
#else // Unknown architecture.
#error "Unknown architecture."
#endif // Target architecture.
CodeDesc desc;
masm.GetCode(isolate, &desc);
std::ofstream of(TEST_FUNCTION_FILE, std::ios::out | std::ios::binary);
of.write(reinterpret_cast<char*>(desc.buffer), desc.instr_size);
}
#undef __
#endif // GENERATE_TEST_FUNCTION_DATA
#if V8_TARGET_ARCH_IA32
#define FUNCTION_BYTES \
".byte 0x8b, 0x44, 0x24, 0x04, 0x03, 0x44, 0x24, 0x08, 0xc3\n"
#elif V8_TARGET_ARCH_X64 && _WIN64
#define FUNCTION_BYTES ".byte 0x48, 0x8b, 0xc2, 0x48, 0x03, 0xc1, 0xc3\n"
#elif V8_TARGET_ARCH_X64
#define FUNCTION_BYTES ".byte 0x48, 0x8b, 0xc6, 0x48, 0x03, 0xc7, 0xc3\n"
#elif V8_TARGET_ARCH_ARM64
#define FUNCTION_BYTES ".byte 0x00, 0x00, 0x01, 0x8b, 0xc0, 0x03, 0x5f, 0xd6\n"
#elif V8_TARGET_ARCH_ARM
#define FUNCTION_BYTES ".byte 0x01, 0x00, 0x80, 0xe0, 0x0e, 0xf0, 0xa0, 0xe1\n"
#elif V8_TARGET_ARCH_PPC
#define FUNCTION_BYTES ".byte 0x14, 0x22, 0x63, 0x7c, 0x20, 0x00, 0x80, 0x4e\n"
#elif V8_TARGET_ARCH_MIPS
#define FUNCTION_BYTES \
".byte 0x21, 0x10, 0x85, 0x00, 0x08, 0x00, 0xe0, " \
"0x03, 0x00, 0x00, 0x00, 0x00\n"
#elif V8_TARGET_ARCH_MIPS64
#define FUNCTION_BYTES \
".byte 0x21, 0x10, 0x85, 0x00, 0x08, 0x00, 0xe0, " \
"0x03, 0x00, 0x00, 0x00, 0x00\n"
#elif V8_TARGET_ARCH_S390
#define FUNCTION_BYTES \
".byte 0xb9, 0x08, 0x00, 0x23, 0x07, 0xfe\n"
#else
#error "Unknown architecture."
#endif
V8_EMBEDDED_RODATA_HEADER(test_string0_bytes)
__asm__(".byte 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37\n"
".byte 0x38, 0x39, 0x0a, 0x00\n");
extern "C" V8_ALIGNED(16) const char test_string0_bytes[];
V8_EMBEDDED_TEXT_HEADER(test_function0_bytes)
__asm__(FUNCTION_BYTES);
extern "C" V8_ALIGNED(16) const char test_function0_bytes[];
// clang-format on
// A historical note: We use .byte over .incbin since the latter leads to
// complications involving generation of build-time dependencies. Goma parses
// #include statements, and clang has -MD/-MMD. Neither recognize .incbin.
TEST(ByteInRodata) {
CHECK_EQ(0, std::strcmp("0123456789\n", test_string0_bytes));
}
TEST(ByteInText) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
auto f = GeneratedCode<int(int, int)>::FromAddress(
isolate, const_cast<char*>(test_function0_bytes));
CHECK_EQ(7, f.Call(3, 4));
CHECK_EQ(11, f.Call(5, 6));
}
#endif // #ifndef V8_COMPILER_IS_MSVC
#undef V8_COMPILER_IS_MSVC
#endif // V8_EMBEDDED_BUILTINS
#undef FUNCTION_BYTES
#undef GENERATE_TEST_FUNCTION_DATA
#undef TEST_FUNCTION_FILE
} // namespace test_isolate_independent_builtins
} // namespace internal
} // namespace v8
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