Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 "src/v8.h" |
| 31 | #include "test/cctest/cctest.h" |
| 32 | |
| 33 | #include "src/macro-assembler.h" |
| 34 | |
| 35 | #include "src/arm/macro-assembler-arm.h" |
| 36 | #include "src/arm/simulator-arm.h" |
| 37 | |
| 38 | |
| 39 | using namespace v8::internal; |
| 40 | |
| 41 | typedef void* (*F)(int x, int y, int p2, int p3, int p4); |
| 42 | |
| 43 | #define __ masm-> |
| 44 | |
| 45 | |
| 46 | static byte to_non_zero(int n) { |
| 47 | return static_cast<unsigned>(n) % 255 + 1; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | static bool all_zeroes(const byte* beg, const byte* end) { |
| 52 | CHECK(beg); |
| 53 | CHECK(beg <= end); |
| 54 | while (beg < end) { |
| 55 | if (*beg++ != 0) |
| 56 | return false; |
| 57 | } |
| 58 | return true; |
| 59 | } |
| 60 | |
| 61 | |
| 62 | TEST(CopyBytes) { |
| 63 | CcTest::InitializeVM(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 64 | Isolate* isolate = CcTest::i_isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 65 | HandleScope handles(isolate); |
| 66 | |
| 67 | const int data_size = 1 * KB; |
| 68 | size_t act_size; |
| 69 | |
| 70 | // Allocate two blocks to copy data between. |
| 71 | byte* src_buffer = |
| 72 | static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0)); |
| 73 | CHECK(src_buffer); |
| 74 | CHECK(act_size >= static_cast<size_t>(data_size)); |
| 75 | byte* dest_buffer = |
| 76 | static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0)); |
| 77 | CHECK(dest_buffer); |
| 78 | CHECK(act_size >= static_cast<size_t>(data_size)); |
| 79 | |
| 80 | // Storage for R0 and R1. |
| 81 | byte* r0_; |
| 82 | byte* r1_; |
| 83 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 84 | MacroAssembler assembler(isolate, NULL, 0, |
| 85 | v8::internal::CodeObjectRequired::kYes); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 86 | MacroAssembler* masm = &assembler; |
| 87 | |
| 88 | // Code to be generated: The stuff in CopyBytes followed by a store of R0 and |
| 89 | // R1, respectively. |
| 90 | __ CopyBytes(r0, r1, r2, r3); |
| 91 | __ mov(r2, Operand(reinterpret_cast<int>(&r0_))); |
| 92 | __ mov(r3, Operand(reinterpret_cast<int>(&r1_))); |
| 93 | __ str(r0, MemOperand(r2)); |
| 94 | __ str(r1, MemOperand(r3)); |
| 95 | __ bx(lr); |
| 96 | |
| 97 | CodeDesc desc; |
| 98 | masm->GetCode(&desc); |
| 99 | Handle<Code> code = isolate->factory()->NewCode( |
| 100 | desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| 101 | |
| 102 | F f = FUNCTION_CAST<F>(code->entry()); |
| 103 | |
| 104 | // Initialise source data with non-zero bytes. |
| 105 | for (int i = 0; i < data_size; i++) { |
| 106 | src_buffer[i] = to_non_zero(i); |
| 107 | } |
| 108 | |
| 109 | const int fuzz = 11; |
| 110 | |
| 111 | for (int size = 0; size < 600; size++) { |
| 112 | for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) { |
| 113 | for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) { |
| 114 | memset(dest_buffer, 0, data_size); |
| 115 | CHECK(dest + size < dest_buffer + data_size); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 116 | (void)CALL_GENERATED_CODE(isolate, f, reinterpret_cast<int>(src), |
| 117 | reinterpret_cast<int>(dest), size, 0, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 118 | // R0 and R1 should point at the first byte after the copied data. |
| 119 | CHECK_EQ(src + size, r0_); |
| 120 | CHECK_EQ(dest + size, r1_); |
| 121 | // Check that we haven't written outside the target area. |
| 122 | CHECK(all_zeroes(dest_buffer, dest)); |
| 123 | CHECK(all_zeroes(dest + size, dest_buffer + data_size)); |
| 124 | // Check the target area. |
| 125 | CHECK_EQ(0, memcmp(src, dest, size)); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | // Check that the source data hasn't been clobbered. |
| 131 | for (int i = 0; i < data_size; i++) { |
| 132 | CHECK(src_buffer[i] == to_non_zero(i)); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | |
| 137 | typedef int (*F5)(void*, void*, void*, void*, void*); |
| 138 | |
| 139 | |
| 140 | TEST(LoadAndStoreWithRepresentation) { |
| 141 | // Allocate an executable page of memory. |
| 142 | size_t actual_size; |
| 143 | byte* buffer = static_cast<byte*>(v8::base::OS::Allocate( |
| 144 | Assembler::kMinimalBufferSize, &actual_size, true)); |
| 145 | CHECK(buffer); |
| 146 | Isolate* isolate = CcTest::i_isolate(); |
| 147 | HandleScope handles(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 148 | MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size), |
| 149 | v8::internal::CodeObjectRequired::kYes); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 150 | MacroAssembler* masm = &assembler; // Create a pointer for the __ macro. |
| 151 | __ sub(sp, sp, Operand(1 * kPointerSize)); |
| 152 | Label exit; |
| 153 | |
| 154 | // Test 1. |
| 155 | __ mov(r0, Operand(1)); // Test number. |
| 156 | __ mov(r1, Operand(0)); |
| 157 | __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| 158 | __ mov(r2, Operand(-1)); |
| 159 | __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8()); |
| 160 | __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| 161 | __ mov(r2, Operand(255)); |
| 162 | __ cmp(r3, r2); |
| 163 | __ b(ne, &exit); |
| 164 | __ mov(r2, Operand(255)); |
| 165 | __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8()); |
| 166 | __ cmp(r3, r2); |
| 167 | __ b(ne, &exit); |
| 168 | |
| 169 | // Test 2. |
| 170 | __ mov(r0, Operand(2)); // Test number. |
| 171 | __ mov(r1, Operand(0)); |
| 172 | __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| 173 | __ mov(r2, Operand(-1)); |
| 174 | __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer8()); |
| 175 | __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| 176 | __ mov(r2, Operand(255)); |
| 177 | __ cmp(r3, r2); |
| 178 | __ b(ne, &exit); |
| 179 | __ mov(r2, Operand(-1)); |
| 180 | __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer8()); |
| 181 | __ cmp(r3, r2); |
| 182 | __ b(ne, &exit); |
| 183 | |
| 184 | // Test 3. |
| 185 | __ mov(r0, Operand(3)); // Test number. |
| 186 | __ mov(r1, Operand(0)); |
| 187 | __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| 188 | __ mov(r2, Operand(-1)); |
| 189 | __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16()); |
| 190 | __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| 191 | __ mov(r2, Operand(65535)); |
| 192 | __ cmp(r3, r2); |
| 193 | __ b(ne, &exit); |
| 194 | __ mov(r2, Operand(65535)); |
| 195 | __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16()); |
| 196 | __ cmp(r3, r2); |
| 197 | __ b(ne, &exit); |
| 198 | |
| 199 | // Test 4. |
| 200 | __ mov(r0, Operand(4)); // Test number. |
| 201 | __ mov(r1, Operand(0)); |
| 202 | __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| 203 | __ mov(r2, Operand(-1)); |
| 204 | __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer16()); |
| 205 | __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| 206 | __ mov(r2, Operand(65535)); |
| 207 | __ cmp(r3, r2); |
| 208 | __ b(ne, &exit); |
| 209 | __ mov(r2, Operand(-1)); |
| 210 | __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer16()); |
| 211 | __ cmp(r3, r2); |
| 212 | __ b(ne, &exit); |
| 213 | |
| 214 | __ mov(r0, Operand(0)); // Success. |
| 215 | __ bind(&exit); |
| 216 | __ add(sp, sp, Operand(1 * kPointerSize)); |
| 217 | __ bx(lr); |
| 218 | |
| 219 | CodeDesc desc; |
| 220 | masm->GetCode(&desc); |
| 221 | Handle<Code> code = isolate->factory()->NewCode( |
| 222 | desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| 223 | |
| 224 | // Call the function from C++. |
| 225 | F5 f = FUNCTION_CAST<F5>(code->entry()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 226 | CHECK(!CALL_GENERATED_CODE(isolate, f, 0, 0, 0, 0, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | #undef __ |