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1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 //     * Redistributions of source code must retain the above copyright
7 //       notice, this list of conditions and the following disclaimer.
8 //     * Redistributions in binary form must reproduce the above
9 //       copyright notice, this list of conditions and the following
10 //       disclaimer in the documentation and/or other materials provided
11 //       with the distribution.
12 //     * Neither the name of Google Inc. nor the names of its
13 //       contributors may be used to endorse or promote products derived
14 //       from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
28 #include <stdlib.h>
29 
30 #include "v8.h"
31 
32 #include "macro-assembler.h"
33 #include "factory.h"
34 #include "platform.h"
35 #include "serialize.h"
36 #include "cctest.h"
37 
38 using namespace v8::internal;
39 
40 #if __GNUC__
41 #define STDCALL  __attribute__((stdcall))
42 #else
43 #define STDCALL  __stdcall
44 #endif
45 
46 typedef int STDCALL F0Type();
47 typedef F0Type* F0;
48 
49 #define __ masm->
50 
51 
TEST(LoadAndStoreWithRepresentation)52 TEST(LoadAndStoreWithRepresentation) {
53   v8::internal::V8::Initialize(NULL);
54 
55   // Allocate an executable page of memory.
56   size_t actual_size;
57   byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
58                                                  &actual_size,
59                                                  true));
60   CHECK(buffer);
61   Isolate* isolate = CcTest::i_isolate();
62   HandleScope handles(isolate);
63   MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size));
64   MacroAssembler* masm = &assembler;  // Create a pointer for the __ macro.
65   __ push(ebx);
66   __ push(edx);
67   __ sub(esp, Immediate(1 * kPointerSize));
68   Label exit;
69 
70   // Test 1.
71   __ mov(eax, Immediate(1));  // Test number.
72   __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
73   __ mov(ebx, Immediate(-1));
74   __ Store(ebx, Operand(esp, 0 * kPointerSize), Representation::UInteger8());
75   __ mov(ebx, Operand(esp, 0 * kPointerSize));
76   __ mov(edx, Immediate(255));
77   __ cmp(ebx, edx);
78   __ j(not_equal, &exit);
79   __ Load(ebx, Operand(esp, 0 * kPointerSize), Representation::UInteger8());
80   __ cmp(ebx, edx);
81   __ j(not_equal, &exit);
82 
83 
84   // Test 2.
85   __ mov(eax, Immediate(2));  // Test number.
86   __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
87   __ mov(ebx, Immediate(-1));
88   __ Store(ebx, Operand(esp, 0 * kPointerSize), Representation::Integer8());
89   __ mov(ebx, Operand(esp, 0 * kPointerSize));
90   __ mov(edx, Immediate(255));
91   __ cmp(ebx, edx);
92   __ j(not_equal, &exit);
93   __ Load(ebx, Operand(esp, 0 * kPointerSize), Representation::Integer8());
94   __ mov(edx, Immediate(-1));
95   __ cmp(ebx, edx);
96   __ j(not_equal, &exit);
97 
98   // Test 3.
99   __ mov(eax, Immediate(3));  // Test number.
100   __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
101   __ mov(ebx, Immediate(-1));
102   __ Store(ebx, Operand(esp, 0 * kPointerSize), Representation::Integer16());
103   __ mov(ebx, Operand(esp, 0 * kPointerSize));
104   __ mov(edx, Immediate(65535));
105   __ cmp(ebx, edx);
106   __ j(not_equal, &exit);
107   __ Load(edx, Operand(esp, 0 * kPointerSize), Representation::Integer16());
108   __ mov(ebx, Immediate(-1));
109   __ cmp(ebx, edx);
110   __ j(not_equal, &exit);
111 
112   // Test 4.
113   __ mov(eax, Immediate(4));  // Test number.
114   __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
115   __ mov(ebx, Immediate(-1));
116   __ Store(ebx, Operand(esp, 0 * kPointerSize), Representation::UInteger16());
117   __ mov(ebx, Operand(esp, 0 * kPointerSize));
118   __ mov(edx, Immediate(65535));
119   __ cmp(ebx, edx);
120   __ j(not_equal, &exit);
121   __ Load(edx, Operand(esp, 0 * kPointerSize), Representation::UInteger16());
122   __ cmp(ebx, edx);
123   __ j(not_equal, &exit);
124 
125   __ xor_(eax, eax);  // Success.
126   __ bind(&exit);
127   __ add(esp, Immediate(1 * kPointerSize));
128   __ pop(edx);
129   __ pop(ebx);
130   __ ret(0);
131 
132   CodeDesc desc;
133   masm->GetCode(&desc);
134   // Call the function from C++.
135   int result = FUNCTION_CAST<F0>(buffer)();
136   CHECK_EQ(0, result);
137 }
138 
139 #undef __
140