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Issue 1759873002: Assembler changes for enabling GrowHeap in Wasm (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix compile 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 <stdlib.h>
6
7 #include "src/v8.h"
8
9 #include "src/debug/debug.h"
10 #include "src/disasm.h"
11 #include "src/disassembler.h"
12 #include "src/ia32/frames-ia32.h"
13 #include "src/ic/ic.h"
14 #include "src/macro-assembler.h"
15 #include "test/cctest/cctest.h"
16 #include "test/cctest/compiler/c-signature.h"
17 #include "test/cctest/compiler/call-tester.h"
18
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(WasmRelocationIa32) {
27 CcTest::InitializeVM();
28 Zone zone;
29 Isolate* isolate = CcTest::i_isolate();
30 HandleScope scope(isolate);
31 v8::internal::byte buffer[4096];
32 Assembler assm(isolate, buffer, sizeof buffer);
33 DummyStaticFunction(NULL);
34 int32_t imm = 1234567;
35
36 __ mov(eax, Immediate(reinterpret_cast<Address>(imm),
37 RelocInfo::WASM_MEMORY_REFERENCE));
38 __ nop();
39 __ ret(0);
40
41 CSignature0<int32_t> csig;
42 CodeDesc desc;
43 assm.GetCode(&desc);
44 Handle<Code> code = isolate->factory()->NewCode(
45 desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
46 USE(code);
47
48 CodeRunner<int32_t> runnable(isolate, code, &csig);
49 int32_t ret_value = runnable.Call();
50 CHECK_EQ(ret_value, imm);
51
52 #ifdef OBJECT_PRINT
53 OFStream os(stdout);
54 code->Print(os);
55 byte* begin = code->instruction_start();
56 byte* end = begin + code->instruction_size();
57 disasm::Disassembler::Disassemble(stdout, begin, end);
58 #endif
59
60 size_t offset = 1234;
61
62 // Relocating references by offset
63 int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE);
64 for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
65 RelocInfo::Mode mode = it.rinfo()->rmode();
66 if (RelocInfo::IsWasmMemoryReference(mode)) {
67 // Dummy values of size used here as the objective of the test is to
68 // verify that the immediate is patched correctly
69 it.rinfo()->update_wasm_memory_reference(
70 it.rinfo()->wasm_memory_reference(),
71 it.rinfo()->wasm_memory_reference() + offset, 1, 2,
72 SKIP_ICACHE_FLUSH);
73 }
74 }
75
76 // Check if immediate is updated correctly
77 ret_value = runnable.Call();
78 CHECK_EQ(ret_value, imm + offset);
79
80 #ifdef OBJECT_PRINT
81 // OFStream os(stdout);
82 code->Print(os);
83 begin = code->instruction_start();
84 end = begin + code->instruction_size();
85 disasm::Disassembler::Disassemble(stdout, begin, end);
86 #endif
87 }
88
89 #undef __
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