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Issue 1808823002: Revert of Assembler changes for enabling GrowHeap in Wasm (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 9 months ago
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1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <iostream> // NOLINT(readability/streams)
6
7 #include "src/v8.h"
8 #include "test/cctest/cctest.h"
9
10 #include "src/arm/assembler-arm-inl.h"
11 #include "src/arm/simulator-arm.h"
12 #include "src/disassembler.h"
13 #include "src/factory.h"
14 #include "src/ostreams.h"
15 #include "test/cctest/compiler/c-signature.h"
16 #include "test/cctest/compiler/call-tester.h"
17
18 using namespace v8::base;
19 using namespace v8::internal;
20 using namespace v8::internal::compiler;
21
22 #define __ assm.
23
24 static int32_t DummyStaticFunction(Object* result) { return 1; }
25
26 TEST(WasmRelocationArm) {
27 CcTest::InitializeVM();
28 Isolate* isolate = CcTest::i_isolate();
29 HandleScope scope(isolate);
30 v8::internal::byte buffer[4096];
31 DummyStaticFunction(NULL);
32 int32_t imm = 1234567;
33
34 Assembler assm(isolate, buffer, sizeof buffer);
35
36 __ mov(r0, Operand(imm, RelocInfo::WASM_MEMORY_REFERENCE));
37 __ mov(pc, Operand(lr));
38
39 CodeDesc desc;
40 assm.GetCode(&desc);
41 Handle<Code> code = isolate->factory()->NewCode(
42 desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
43
44 CSignature0<int32_t> csig;
45 CodeRunner<int32_t> runnable(isolate, code, &csig);
46 int32_t ret_value = runnable.Call();
47 CHECK_EQ(ret_value, imm);
48
49 #ifdef DEBUG
50 OFStream os(stdout);
51 code->Print(os);
52 ::printf("f() = %d\n\n", ret_value);
53 #endif
54 size_t offset = 1234;
55
56 // Relocating references by offset
57 int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE);
58 for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
59 RelocInfo::Mode mode = it.rinfo()->rmode();
60 if (RelocInfo::IsWasmMemoryReference(mode)) {
61 // Dummy values of size used here as the objective of the test is to
62 // verify that the immediate is patched correctly
63 it.rinfo()->update_wasm_memory_reference(
64 it.rinfo()->wasm_memory_reference(),
65 it.rinfo()->wasm_memory_reference() + offset, 1, 2,
66 SKIP_ICACHE_FLUSH);
67 }
68 }
69
70 // Call into relocated code object
71 ret_value = runnable.Call();
72 CHECK_EQ((imm + offset), ret_value);
73
74 #ifdef DEBUG
75 code->Print(os);
76 ::printf("f() = %d\n\n", ret_value);
77 #endif
78 }
79
80 #undef __
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