41b2d783e5
Internal references create absolute pointers within the code and must therefore be disallowed for embedded builtins to remain position-independent. Drive-by: remove related cctest. This test used to be relevant before embedding was fully implemented, but by now it is useless and rather misleading since it gives a false sense of safety. Bug: v8:6666 Change-Id: I57a62274b57c3ef1303d5114c68e2a9b1f92bda4 Reviewed-on: https://chromium-review.googlesource.com/1092732 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#53623}
206 lines
6.1 KiB
C++
206 lines
6.1 KiB
C++
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "test/cctest/cctest.h"
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#include "src/assembler-inl.h"
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#include "src/handles-inl.h"
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#include "src/isolate.h"
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#include "src/macro-assembler-inl.h"
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#include "src/simulator.h"
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#include "src/snapshot/macros.h"
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#include "src/snapshot/snapshot.h"
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// To generate the binary files for the test function, enable this section and
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// run GenerateTestFunctionData once on each arch.
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#define GENERATE_TEST_FUNCTION_DATA false
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namespace v8 {
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namespace internal {
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namespace test_isolate_independent_builtins {
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// V8_CC_MSVC is true for both MSVC and clang on windows. clang can handle
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// __asm__-style inline assembly but MSVC cannot, and thus we need a more
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// precise compiler detection that can distinguish between the two. clang on
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// windows sets both __clang__ and _MSC_VER, MSVC sets only _MSC_VER.
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#if defined(_MSC_VER) && !defined(__clang__)
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#define V8_COMPILER_IS_MSVC
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#endif
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#ifndef V8_COMPILER_IS_MSVC
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#if GENERATE_TEST_FUNCTION_DATA
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// Arch-specific defines.
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#if V8_TARGET_ARCH_IA32
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#define TEST_FUNCTION_FILE "f-ia32.bin"
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#elif V8_TARGET_ARCH_X64 && _WIN64
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#define TEST_FUNCTION_FILE "f-x64-win.bin"
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#elif V8_TARGET_ARCH_X64
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#define TEST_FUNCTION_FILE "f-x64.bin"
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#elif V8_TARGET_ARCH_ARM64
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#define TEST_FUNCTION_FILE "f-arm64.bin"
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#elif V8_TARGET_ARCH_ARM
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#define TEST_FUNCTION_FILE "f-arm.bin"
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#elif V8_TARGET_ARCH_PPC
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#define TEST_FUNCTION_FILE "f-ppc.bin"
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#elif V8_TARGET_ARCH_MIPS
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#define TEST_FUNCTION_FILE "f-mips.bin"
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#elif V8_TARGET_ARCH_MIPS64
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#define TEST_FUNCTION_FILE "f-mips64.bin"
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#elif V8_TARGET_ARCH_S390
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#define TEST_FUNCTION_FILE "f-s390.bin"
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#else
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#error "Unknown architecture."
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#endif
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#define __ masm.
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TEST(GenerateTestFunctionData) {
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CcTest::InitializeVM();
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Isolate* isolate = CcTest::i_isolate();
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HandleScope scope(isolate);
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#if V8_TARGET_ARCH_IA32
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v8::internal::byte buffer[256];
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Assembler masm(isolate, buffer, sizeof(buffer));
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__ mov(eax, Operand(esp, 4));
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__ add(eax, Operand(esp, 8));
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__ ret(0);
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#elif V8_TARGET_ARCH_X64
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size_t allocated;
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byte* buffer = AllocateAssemblerBuffer(&allocated);
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Assembler masm(isolate, buffer, static_cast<int>(allocated));
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#ifdef _WIN64
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static const Register arg1 = rcx;
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static const Register arg2 = rdx;
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#else
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static const Register arg1 = rdi;
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static const Register arg2 = rsi;
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#endif
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__ movq(rax, arg2);
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__ addq(rax, arg1);
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__ ret(0);
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#elif V8_TARGET_ARCH_ARM64
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MacroAssembler masm(isolate, nullptr, 0,
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v8::internal::CodeObjectRequired::kYes);
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__ Add(x0, x0, x1);
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__ Ret();
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#elif V8_TARGET_ARCH_ARM
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Assembler masm(isolate, nullptr, 0);
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__ add(r0, r0, Operand(r1));
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__ mov(pc, Operand(lr));
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#elif V8_TARGET_ARCH_PPC
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Assembler masm(isolate, nullptr, 0);
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__ function_descriptor();
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__ add(r3, r3, r4);
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__ blr();
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#elif V8_TARGET_ARCH_MIPS
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MacroAssembler masm(isolate, nullptr, 0,
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v8::internal::CodeObjectRequired::kYes);
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__ addu(v0, a0, a1);
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__ jr(ra);
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__ nop();
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#elif V8_TARGET_ARCH_MIPS64
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MacroAssembler masm(isolate, nullptr, 0,
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v8::internal::CodeObjectRequired::kYes);
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__ addu(v0, a0, a1);
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__ jr(ra);
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__ nop();
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#elif V8_TARGET_ARCH_S390
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Assembler masm(isolate, nullptr, 0);
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__ agr(r2, r3);
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__ b(r14);
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#else // Unknown architecture.
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#error "Unknown architecture."
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#endif // Target architecture.
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CodeDesc desc;
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masm.GetCode(isolate, &desc);
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std::ofstream of(TEST_FUNCTION_FILE, std::ios::out | std::ios::binary);
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of.write(reinterpret_cast<char*>(desc.buffer), desc.instr_size);
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}
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#undef __
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#endif // GENERATE_TEST_FUNCTION_DATA
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#if V8_TARGET_ARCH_IA32
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#define FUNCTION_BYTES \
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".byte 0x8b, 0x44, 0x24, 0x04, 0x03, 0x44, 0x24, 0x08, 0xc3\n"
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#elif V8_TARGET_ARCH_X64 && _WIN64
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#define FUNCTION_BYTES ".byte 0x48, 0x8b, 0xc2, 0x48, 0x03, 0xc1, 0xc3\n"
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#elif V8_TARGET_ARCH_X64
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#define FUNCTION_BYTES ".byte 0x48, 0x8b, 0xc6, 0x48, 0x03, 0xc7, 0xc3\n"
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#elif V8_TARGET_ARCH_ARM64
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#define FUNCTION_BYTES ".byte 0x00, 0x00, 0x01, 0x8b, 0xc0, 0x03, 0x5f, 0xd6\n"
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#elif V8_TARGET_ARCH_ARM
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#define FUNCTION_BYTES ".byte 0x01, 0x00, 0x80, 0xe0, 0x0e, 0xf0, 0xa0, 0xe1\n"
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#elif V8_TARGET_ARCH_PPC
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#if defined(V8_OS_AIX)
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#define FUNCTION_BYTES ".byte 0x7c, 0x64, 0x1a, 0x14, 0x4e, 0x80, 0x00, 0x20\n"
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#else
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#define FUNCTION_BYTES ".byte 0x14, 0x22, 0x63, 0x7c, 0x20, 0x00, 0x80, 0x4e\n"
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#endif
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#elif defined(V8_TARGET_ARCH_MIPS) || defined(V8_TARGET_ARCH_MIPS64)
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#if defined(V8_TARGET_BIG_ENDIAN)
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#define FUNCTION_BYTES \
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".byte 0x00, 0x85, 0x10, 0x21, 0x03, 0xe0, 0x00, " \
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"0x08, 0x00, 0x00, 0x00, 0x00\n"
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#else
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#define FUNCTION_BYTES \
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".byte 0x21, 0x10, 0x85, 0x00, 0x08, 0x00, 0xe0, " \
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"0x03, 0x00, 0x00, 0x00, 0x00\n"
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#endif
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#elif V8_TARGET_ARCH_S390
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#define FUNCTION_BYTES \
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".byte 0xb9, 0x08, 0x00, 0x23, 0x07, 0xfe\n"
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#else
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#error "Unknown architecture."
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#endif
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V8_EMBEDDED_RODATA_HEADER(test_string0_bytes)
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__asm__(".byte 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37\n"
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".byte 0x38, 0x39, 0x0a, 0x00\n");
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extern "C" V8_ALIGNED(16) const char test_string0_bytes[];
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V8_EMBEDDED_TEXT_HEADER(test_function0_bytes)
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__asm__(FUNCTION_BYTES);
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extern "C" V8_ALIGNED(16) const char test_function0_bytes[];
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// clang-format on
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// A historical note: We use .byte over .incbin since the latter leads to
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// complications involving generation of build-time dependencies. Goma parses
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// #include statements, and clang has -MD/-MMD. Neither recognize .incbin.
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TEST(ByteInRodata) {
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CHECK_EQ(0, std::strcmp("0123456789\n", test_string0_bytes));
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}
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TEST(ByteInText) {
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CcTest::InitializeVM();
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Isolate* isolate = CcTest::i_isolate();
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auto f = GeneratedCode<int(int, int)>::FromAddress(
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isolate, reinterpret_cast<Address>(&test_function0_bytes[0]));
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CHECK_EQ(7, f.Call(3, 4));
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CHECK_EQ(11, f.Call(5, 6));
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}
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#endif // #ifndef V8_COMPILER_IS_MSVC
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#undef V8_COMPILER_IS_MSVC
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#undef FUNCTION_BYTES
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#undef GENERATE_TEST_FUNCTION_DATA
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#undef TEST_FUNCTION_FILE
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} // namespace test_isolate_independent_builtins
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} // namespace internal
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} // namespace v8
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