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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 <stdlib.h>
#include "src/v8.h"
#include "src/debug/debug.h"
#include "src/disasm.h"
#include "src/disassembler.h"
#include "src/frame-constants.h"
#include "src/ic/ic.h"
#include "src/macro-assembler.h"
#include "src/objects-inl.h"
#include "src/ostreams.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/c-signature.h"
#include "test/cctest/compiler/call-tester.h"
namespace v8 {
namespace internal {
namespace wasm {
#define __ assm.
static int32_t DummyStaticFunction(Object* result) { return 1; }
TEST(WasmRelocationIa32ContextReference) {
Isolate* isolate = CcTest::i_isolate();
Zone zone(isolate->allocator(), ZONE_NAME);
HandleScope scope(isolate);
v8::internal::byte buffer[4096];
Assembler assm(isolate, buffer, sizeof buffer);
DummyStaticFunction(nullptr);
int32_t imm = 1234567;
__ mov(eax, Immediate(reinterpret_cast<Address>(imm),
RelocInfo::WASM_CONTEXT_REFERENCE));
__ nop();
__ ret(0);
compiler::CSignature0<int32_t> csig;
CodeDesc desc;
assm.GetCode(isolate, &desc);
Handle<Code> code =
isolate->factory()->NewCode(desc, Code::STUB, Handle<Code>());
USE(code);
compiler::CodeRunner<int32_t> runnable(isolate, code, &csig);
int32_t ret_value = runnable.Call();
CHECK_EQ(ret_value, imm);
#ifdef OBJECT_PRINT
OFStream os(stdout);
code->Print(os);
byte* begin = code->instruction_start();
byte* end = begin + code->instruction_size();
disasm::Disassembler::Disassemble(stdout, begin, end);
#endif
int offset = 1234;
// Relocating references 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);
}
// Check if immediate is updated correctly
ret_value = runnable.Call();
CHECK_EQ(ret_value, imm + offset);
#ifdef OBJECT_PRINT
code->Print(os);
begin = code->instruction_start();
end = begin + code->instruction_size();
disasm::Disassembler::Disassemble(stdout, begin, end);
#endif
}
#undef __
} // namespace wasm
} // namespace internal
} // namespace v8
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