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31 #include "test/cctest/cctest.h"
33 #include "src/macro-assembler.h"
35 #include "src/arm/macro-assembler-arm.h"
36 #include "src/arm/simulator-arm.h"
39 using namespace v8::internal;
41 typedef void* (*F)(int x, int y, int p2, int p3, int p4);
46 static byte to_non_zero(int n) {
47 return static_cast<unsigned>(n) % 255 + 1;
51 static bool all_zeroes(const byte* beg, const byte* end) {
63 CcTest::InitializeVM();
64 Isolate* isolate = Isolate::Current();
65 HandleScope handles(isolate);
67 const int data_size = 1 * KB;
70 // Allocate two blocks to copy data between.
72 static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
74 CHECK(act_size >= static_cast<size_t>(data_size));
76 static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
78 CHECK(act_size >= static_cast<size_t>(data_size));
80 // Storage for R0 and R1.
84 MacroAssembler assembler(isolate, NULL, 0);
85 MacroAssembler* masm = &assembler;
87 // Code to be generated: The stuff in CopyBytes followed by a store of R0 and
89 __ CopyBytes(r0, r1, r2, r3);
90 __ mov(r2, Operand(reinterpret_cast<int>(&r0_)));
91 __ mov(r3, Operand(reinterpret_cast<int>(&r1_)));
92 __ str(r0, MemOperand(r2));
93 __ str(r1, MemOperand(r3));
98 Handle<Code> code = isolate->factory()->NewCode(
99 desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
101 F f = FUNCTION_CAST<F>(code->entry());
103 // Initialise source data with non-zero bytes.
104 for (int i = 0; i < data_size; i++) {
105 src_buffer[i] = to_non_zero(i);
110 for (int size = 0; size < 600; size++) {
111 for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) {
112 for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) {
113 memset(dest_buffer, 0, data_size);
114 CHECK(dest + size < dest_buffer + data_size);
115 (void) CALL_GENERATED_CODE(f, reinterpret_cast<int>(src),
116 reinterpret_cast<int>(dest), size, 0, 0);
117 // R0 and R1 should point at the first byte after the copied data.
118 CHECK_EQ(src + size, r0_);
119 CHECK_EQ(dest + size, r1_);
120 // Check that we haven't written outside the target area.
121 CHECK(all_zeroes(dest_buffer, dest));
122 CHECK(all_zeroes(dest + size, dest_buffer + data_size));
123 // Check the target area.
124 CHECK_EQ(0, memcmp(src, dest, size));
129 // Check that the source data hasn't been clobbered.
130 for (int i = 0; i < data_size; i++) {
131 CHECK(src_buffer[i] == to_non_zero(i));
136 typedef int (*F5)(void*, void*, void*, void*, void*);
139 TEST(LoadAndStoreWithRepresentation) {
140 // Allocate an executable page of memory.
142 byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
143 Assembler::kMinimalBufferSize, &actual_size, true));
145 Isolate* isolate = CcTest::i_isolate();
146 HandleScope handles(isolate);
147 MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size));
148 MacroAssembler* masm = &assembler; // Create a pointer for the __ macro.
149 __ sub(sp, sp, Operand(1 * kPointerSize));
153 __ mov(r0, Operand(1)); // Test number.
154 __ mov(r1, Operand(0));
155 __ str(r1, MemOperand(sp, 0 * kPointerSize));
156 __ mov(r2, Operand(-1));
157 __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8());
158 __ ldr(r3, MemOperand(sp, 0 * kPointerSize));
159 __ mov(r2, Operand(255));
162 __ mov(r2, Operand(255));
163 __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8());
168 __ mov(r0, Operand(2)); // Test number.
169 __ mov(r1, Operand(0));
170 __ str(r1, MemOperand(sp, 0 * kPointerSize));
171 __ mov(r2, Operand(-1));
172 __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer8());
173 __ ldr(r3, MemOperand(sp, 0 * kPointerSize));
174 __ mov(r2, Operand(255));
177 __ mov(r2, Operand(-1));
178 __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer8());
183 __ mov(r0, Operand(3)); // Test number.
184 __ mov(r1, Operand(0));
185 __ str(r1, MemOperand(sp, 0 * kPointerSize));
186 __ mov(r2, Operand(-1));
187 __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16());
188 __ ldr(r3, MemOperand(sp, 0 * kPointerSize));
189 __ mov(r2, Operand(65535));
192 __ mov(r2, Operand(65535));
193 __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16());
198 __ mov(r0, Operand(4)); // Test number.
199 __ mov(r1, Operand(0));
200 __ str(r1, MemOperand(sp, 0 * kPointerSize));
201 __ mov(r2, Operand(-1));
202 __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer16());
203 __ ldr(r3, MemOperand(sp, 0 * kPointerSize));
204 __ mov(r2, Operand(65535));
207 __ mov(r2, Operand(-1));
208 __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer16());
212 __ mov(r0, Operand(0)); // Success.
214 __ add(sp, sp, Operand(1 * kPointerSize));
218 masm->GetCode(&desc);
219 Handle<Code> code = isolate->factory()->NewCode(
220 desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
222 // Call the function from C++.
223 F5 f = FUNCTION_CAST<F5>(code->entry());
224 CHECK_EQ(0, CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));