201a40d216
R=clemensh@chromium.org BUG=v8:6792 Change-Id: Ida4a0c063232a01c9526d478530fc9adf1e6ee24 Reviewed-on: https://chromium-review.googlesource.com/756740 Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#49181}
81 lines
2.2 KiB
C++
81 lines
2.2 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"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
namespace wasm {
|
|
|
|
#define __ assm.
|
|
|
|
static int32_t DummyStaticFunction(Object* result) { return 1; }
|
|
|
|
TEST(WasmRelocationArmContextReference) {
|
|
Isolate* isolate = CcTest::i_isolate();
|
|
HandleScope scope(isolate);
|
|
v8::internal::byte buffer[4096];
|
|
DummyStaticFunction(nullptr);
|
|
int32_t imm = 1234567;
|
|
|
|
Assembler assm(isolate, buffer, sizeof buffer);
|
|
|
|
__ mov(r0, Operand(imm, RelocInfo::WASM_CONTEXT_REFERENCE));
|
|
__ mov(pc, Operand(lr));
|
|
|
|
CodeDesc desc;
|
|
assm.GetCode(isolate, &desc);
|
|
Handle<Code> code =
|
|
isolate->factory()->NewCode(desc, Code::STUB, Handle<Code>());
|
|
|
|
compiler::CSignature0<int32_t> csig;
|
|
compiler::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
|
|
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);
|
|
}
|
|
|
|
// 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
|
|
}
|
|
|
|
#undef __
|
|
|
|
} // namespace wasm
|
|
} // namespace internal
|
|
} // namespace v8
|