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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/arm/assembler-arm-inl.h"
#include "src/arm/simulator-arm.h"
#include "src/disassembler.h"
#include "src/factory.h"
#include "src/ostreams.h"
#include "test/cctest/compiler/c-signature.h"
#include "test/cctest/compiler/call-tester.h"
using namespace v8::base;
using namespace v8::internal;
using namespace v8::internal::compiler;
#define __ assm.
static int32_t DummyStaticFunction(Object* result) { return 1; }
TEST(WasmRelocationArmMemoryReference) {
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
v8::internal::byte buffer[4096];
DummyStaticFunction(NULL);
int32_t imm = 1234567;
Assembler assm(isolate, buffer, sizeof buffer);
__ mov(r0, Operand(imm, RelocInfo::WASM_MEMORY_REFERENCE));
__ mov(pc, Operand(lr));
CodeDesc desc;
assm.GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
CSignature0<int32_t> csig;
CodeRunner<int32_t> runnable(isolate, code, &csig);
int32_t ret_value = runnable.Call();
CHECK_EQ(ret_value, imm);
#ifdef DEBUG
OFStream os(stdout);
code->Print(os);
::printf("f() = %d\n\n", ret_value);
#endif
size_t offset = 1234;
// Relocating references by offset
int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE);
for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
RelocInfo::Mode mode = it.rinfo()->rmode();
if (RelocInfo::IsWasmMemoryReference(mode)) {
// Dummy values of size used here as the objective of the test is to
// verify that the immediate is patched correctly
it.rinfo()->update_wasm_memory_reference(
it.rinfo()->wasm_memory_reference(),
it.rinfo()->wasm_memory_reference() + offset, 1, 2,
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() = %d\n\n", ret_value);
#endif
}
TEST(WasmRelocationArmMemorySizeReference) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
v8::internal::byte buffer[4096];
DummyStaticFunction(NULL);
int32_t size = 512;
Label fail;
Assembler assm(isolate, buffer, sizeof buffer);
__ mov(r0, Operand(size, RelocInfo::WASM_MEMORY_SIZE_REFERENCE));
__ cmp(r0, Operand(size, RelocInfo::WASM_MEMORY_SIZE_REFERENCE));
__ b(ne, &fail);
__ mov(pc, Operand(lr));
__ bind(&fail);
__ mov(r0, Operand(0xdeadbeef));
__ mov(pc, Operand(lr));
CodeDesc desc;
assm.GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
CSignature0<int32_t> csig;
CodeRunner<int32_t> runnable(isolate, code, &csig);
int32_t ret_value = runnable.Call();
CHECK_NE(ret_value, 0xdeadbeef);
#ifdef DEBUG
OFStream os(stdout);
code->Print(os);
::printf("f() = %d\n\n", ret_value);
#endif
size_t diff = 512;
int mode_mask = (1 << RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
RelocInfo::Mode mode = it.rinfo()->rmode();
if (RelocInfo::IsWasmMemorySizeReference(mode)) {
it.rinfo()->update_wasm_memory_reference(
reinterpret_cast<Address>(1234), reinterpret_cast<Address>(1234),
it.rinfo()->wasm_memory_size_reference(),
it.rinfo()->wasm_memory_size_reference() + diff, SKIP_ICACHE_FLUSH);
}
}
ret_value = runnable.Call();
CHECK_NE(ret_value, 0xdeadbeef);
#ifdef DEBUG
code->Print(os);
::printf("f() = %d\n\n", ret_value);
#endif
}
#undef __
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