a740255899
Now that instruction cache flushing is process-wide and no longer bound
to a specific {Isolate}, we can also make setters on the {RelocInfo}
structure equally independent of the {Isolate} and remove the respective
parameter everywhere.
R=ahaas@chromium.org
Change-Id: I7b21f6f79d0d6cf73424019b9e808c3ec76de08e
Reviewed-on: https://chromium-review.googlesource.com/915922
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51269}
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
// Copyright 2015 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 <stdlib.h>
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#include "src/v8.h"
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#include "src/debug/debug.h"
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#include "src/disasm.h"
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#include "src/disassembler.h"
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#include "src/ic/ic.h"
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#include "src/macro-assembler.h"
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#include "src/objects-inl.h"
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#include "src/ostreams.h"
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#include "test/cctest/cctest.h"
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#include "test/cctest/compiler/c-signature.h"
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#include "test/cctest/compiler/call-tester.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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#define __ assm.
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static int32_t DummyStaticFunction(Object* result) { return 1; }
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TEST(WasmRelocationX64ContextReference) {
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Isolate* isolate = CcTest::i_isolate();
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HandleScope scope(isolate);
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v8::internal::byte buffer[4096];
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Assembler assm(isolate, buffer, sizeof buffer);
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DummyStaticFunction(nullptr);
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int64_t imm = 1234567;
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__ movq(rax, imm, RelocInfo::WASM_CONTEXT_REFERENCE);
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__ nop();
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(isolate, &desc);
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Handle<Code> code =
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isolate->factory()->NewCode(desc, Code::STUB, Handle<Code>());
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USE(code);
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CSignatureOf<int64_t> csig;
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CodeRunner<int64_t> runnable(isolate, code, &csig);
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int64_t ret_value = runnable.Call();
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CHECK_EQ(ret_value, imm);
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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byte* begin = code->instruction_start();
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byte* end = begin + code->instruction_size();
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disasm::Disassembler::Disassemble(stdout, begin, end);
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#endif
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int offset = 1234;
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// Relocating references by offset
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int mode_mask = (1 << RelocInfo::WASM_CONTEXT_REFERENCE);
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for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
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// TODO(6792): No longer needed once WebAssembly code is off heap.
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CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
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DCHECK(RelocInfo::IsWasmContextReference(it.rinfo()->rmode()));
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it.rinfo()->set_wasm_context_reference(
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it.rinfo()->wasm_context_reference() + offset, SKIP_ICACHE_FLUSH);
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}
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// Check if immediate is updated correctly
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ret_value = runnable.Call();
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CHECK_EQ(ret_value, imm + offset);
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#ifdef OBJECT_PRINT
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code->Print(os);
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begin = code->instruction_start();
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end = begin + code->instruction_size();
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disasm::Disassembler::Disassemble(stdout, begin, end);
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#endif
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}
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#undef __
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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