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#include "src/mips64/macro-assembler-mips64.h" 35#include "src/mips64/simulator-mips64.h" 36 37 38using namespace v8::internal; 39 40typedef void* (*F)(int64_t x, int64_t y, int p2, int p3, int p4); 41 42#define __ masm-> 43 44 45static byte to_non_zero(int n) { 46 return static_cast<unsigned>(n) % 255 + 1; 47} 48 49 50static bool all_zeroes(const byte* beg, const byte* end) { 51 CHECK(beg); 52 CHECK(beg <= end); 53 while (beg < end) { 54 if (*beg++ != 0) 55 return false; 56 } 57 return true; 58} 59 60 61TEST(CopyBytes) { 62 CcTest::InitializeVM(); 63 Isolate* isolate = Isolate::Current(); 64 HandleScope handles(isolate); 65 66 const int data_size = 1 * KB; 67 size_t act_size; 68 69 // Allocate two blocks to copy data between. 70 byte* src_buffer = 71 static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0)); 72 CHECK(src_buffer); 73 CHECK(act_size >= static_cast<size_t>(data_size)); 74 byte* dest_buffer = 75 static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0)); 76 CHECK(dest_buffer); 77 CHECK(act_size >= static_cast<size_t>(data_size)); 78 79 // Storage for a0 and a1. 80 byte* a0_; 81 byte* a1_; 82 83 MacroAssembler assembler(isolate, NULL, 0); 84 MacroAssembler* masm = &assembler; 85 86 // Code to be generated: The stuff in CopyBytes followed by a store of a0 and 87 // a1, respectively. 88 __ CopyBytes(a0, a1, a2, a3); 89 __ li(a2, Operand(reinterpret_cast<int64_t>(&a0_))); 90 __ li(a3, Operand(reinterpret_cast<int64_t>(&a1_))); 91 __ sd(a0, MemOperand(a2)); 92 __ jr(ra); 93 __ sd(a1, MemOperand(a3)); 94 95 CodeDesc desc; 96 masm->GetCode(&desc); 97 Handle<Code> code = isolate->factory()->NewCode( 98 desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); 99 100 ::F f = FUNCTION_CAST< ::F>(code->entry()); 101 102 // Initialise source data with non-zero bytes. 103 for (int i = 0; i < data_size; i++) { 104 src_buffer[i] = to_non_zero(i); 105 } 106 107 const int fuzz = 11; 108 109 for (int size = 0; size < 600; size++) { 110 for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) { 111 for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) { 112 memset(dest_buffer, 0, data_size); 113 CHECK(dest + size < dest_buffer + data_size); 114 (void) CALL_GENERATED_CODE(f, reinterpret_cast<int64_t>(src), 115 reinterpret_cast<int64_t>(dest), 116 size, 0, 0); 117 // a0 and a1 should point at the first byte after the copied data. 118 CHECK_EQ(src + size, a0_); 119 CHECK_EQ(dest + size, a1_); 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)); 125 } 126 } 127 } 128 129 // 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)); 132 } 133} 134 135 136TEST(LoadConstants) { 137 CcTest::InitializeVM(); 138 Isolate* isolate = Isolate::Current(); 139 HandleScope handles(isolate); 140 141 int64_t refConstants[64]; 142 int64_t result[64]; 143 144 int64_t mask = 1; 145 for (int i = 0; i < 64; i++) { 146 refConstants[i] = ~(mask << i); 147 } 148 149 MacroAssembler assembler(isolate, NULL, 0); 150 MacroAssembler* masm = &assembler; 151 152 __ mov(a4, a0); 153 for (int i = 0; i < 64; i++) { 154 // Load constant. 155 __ li(a5, Operand(refConstants[i])); 156 __ sd(a5, MemOperand(a4)); 157 __ Daddu(a4, a4, Operand(kPointerSize)); 158 } 159 160 __ jr(ra); 161 __ nop(); 162 163 CodeDesc desc; 164 masm->GetCode(&desc); 165 Handle<Code> code = isolate->factory()->NewCode( 166 desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); 167 168 ::F f = FUNCTION_CAST< ::F>(code->entry()); 169 (void) CALL_GENERATED_CODE(f, reinterpret_cast<int64_t>(result), 170 0, 0, 0, 0); 171 // Check results. 172 for (int i = 0; i < 64; i++) { 173 CHECK(refConstants[i] == result[i]); 174 } 175} 176 177 178TEST(LoadAddress) { 179 CcTest::InitializeVM(); 180 Isolate* isolate = Isolate::Current(); 181 HandleScope handles(isolate); 182 183 MacroAssembler assembler(isolate, NULL, 0); 184 MacroAssembler* masm = &assembler; 185 Label to_jump, skip; 186 __ mov(a4, a0); 187 188 __ Branch(&skip); 189 __ bind(&to_jump); 190 __ nop(); 191 __ nop(); 192 __ jr(ra); 193 __ nop(); 194 __ bind(&skip); 195 __ li(a4, Operand(masm->jump_address(&to_jump)), ADDRESS_LOAD); 196 int check_size = masm->InstructionsGeneratedSince(&skip); 197 CHECK_EQ(check_size, 4); 198 __ jr(a4); 199 __ nop(); 200 __ stop("invalid"); 201 __ stop("invalid"); 202 __ stop("invalid"); 203 __ stop("invalid"); 204 __ stop("invalid"); 205 206 207 CodeDesc desc; 208 masm->GetCode(&desc); 209 Handle<Code> code = isolate->factory()->NewCode( 210 desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); 211 212 ::F f = FUNCTION_CAST< ::F>(code->entry()); 213 (void) CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0); 214 // Check results. 215} 216 217#undef __ 218