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// Copyright 2015 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 <iostream> // NOLINT(readability/streams)
#include "src/v8.h"
#include "test/cctest/cctest.h"
#include "src/arm64/assembler-arm64-inl.h"
#include "src/arm64/macro-assembler-arm64-inl.h"
#include "src/arm64/simulator-arm64.h"
#include "src/arm64/utils-arm64.h"
#include "src/disassembler.h"
#include "src/factory.h"
#include "src/macro-assembler.h"
#include "src/objects-inl.h"
#include "src/ostreams.h"
#include "test/cctest/compiler/c-signature.h"
#include "test/cctest/compiler/call-tester.h"
namespace v8 {
namespace internal {
namespace wasm {
#define __ masm.
static int64_t DummyStaticFunction(Object* result) { return 1; }
TEST(WasmRelocationArm64ContextReference) {
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
v8::internal::byte buffer[4096];
DummyStaticFunction(nullptr);
int64_t imm = 1234567;
MacroAssembler masm(isolate, buffer, sizeof buffer,
v8::internal::CodeObjectRequired::kYes);
__ Mov(x0, Immediate(imm, RelocInfo::WASM_CONTEXT_REFERENCE));
__ Ret();
CodeDesc desc;
masm.GetCode(isolate, &desc);
Handle<Code> code =
isolate->factory()->NewCode(desc, Code::STUB, Handle<Code>());
compiler::CSignatureOf<int64_t> csig;
compiler::CodeRunner<int64_t> runnable(isolate, code, &csig);
int64_t ret_value = runnable.Call();
CHECK_EQ(ret_value, imm);
#ifdef DEBUG
OFStream os(stdout);
code->Print(os);
::printf("f() = %" PRIx64 "\n\n", ret_value);
#endif
int offset = 1234;
// Relocating reference by offset
int mode_mask = (1 << RelocInfo::WASM_CONTEXT_REFERENCE);
for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
// TODO(6792): No longer needed once WebAssembly code is off heap.
CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
DCHECK(RelocInfo::IsWasmContextReference(it.rinfo()->rmode()));
it.rinfo()->set_wasm_context_reference(
isolate, it.rinfo()->wasm_context_reference() + offset,
SKIP_ICACHE_FLUSH);
}
// Call into relocated code object
ret_value = runnable.Call();
CHECK_EQ((imm + offset), ret_value);
#ifdef DEBUG
code->Print(os);
::printf("f() = %" PRIx64 "\n\n", ret_value);
#endif
}
#undef __
} // namespace wasm
} // namespace internal
} // namespace v8
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