117a56b7c2
- Add new RelocInfo mode WASM_MEMORY_SIZE_REFERENCE in the assembler and add relocation information to immediates in compare instructions. - Use relocatable constants for MemSize/BoundsCheck in the wasm compiler R=titzer@chromium.org, yangguo@chromium.org, bradnelson@chromium.org Review-Url: https://codereview.chromium.org/1921203002 Cr-Commit-Position: refs/heads/master@{#36044}
135 lines
3.8 KiB
C++
135 lines
3.8 KiB
C++
// 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 __
|