1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// 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 <stdlib.h>
#include "src/v8.h"
#include "src/debug/debug.h"
#include "src/disasm.h"
#include "src/disassembler.h"
#include "src/ic/ic.h"
#include "src/macro-assembler.h"
#include "src/x87/frames-x87.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/c-signature.h"
#include "test/cctest/compiler/call-tester.h"
using namespace v8::internal;
using namespace v8::internal::compiler;
#define __ assm.
static int32_t DummyStaticFunction(Object* result) { return 1; }
TEST(WasmRelocationIa32) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Zone zone(isolate->allocator());
HandleScope scope(isolate);
v8::internal::byte buffer[4096];
Assembler assm(isolate, buffer, sizeof buffer);
DummyStaticFunction(NULL);
int32_t imm = 1234567;
__ mov(eax, Immediate(reinterpret_cast<Address>(imm),
RelocInfo::WASM_MEMORY_REFERENCE));
__ nop();
__ ret(0);
CSignature0<int32_t> csig;
CodeDesc desc;
assm.GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
USE(code);
CodeRunner<int32_t> runnable(isolate, code, &csig);
int32_t ret_value = runnable.Call();
CHECK_EQ(ret_value, imm);
#ifdef OBJECT_PRINT
OFStream os(stdout);
code->Print(os);
byte* begin = code->instruction_start();
byte* end = begin + code->instruction_size();
disasm::Disassembler::Disassemble(stdout, begin, end);
#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);
}
}
// Check if immediate is updated correctly
ret_value = runnable.Call();
CHECK_EQ(ret_value, imm + offset);
#ifdef OBJECT_PRINT
// OFStream os(stdout);
code->Print(os);
begin = code->instruction_start();
end = begin + code->instruction_size();
disasm::Disassembler::Disassemble(stdout, begin, end);
#endif
}
#undef __
|
