OLD | NEW |
1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
(...skipping 198 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
209 } | 209 } |
210 | 210 |
211 | 211 |
212 void MacroAssembler::Move(Register dst, Register src) { | 212 void MacroAssembler::Move(Register dst, Register src) { |
213 if (!dst.is(src)) { | 213 if (!dst.is(src)) { |
214 mov(dst, src); | 214 mov(dst, src); |
215 } | 215 } |
216 } | 216 } |
217 | 217 |
218 | 218 |
| 219 void MacroAssembler::And(Register dst, Register src1, const Operand& src2, |
| 220 Condition cond) { |
| 221 if (!CpuFeatures::IsSupported(ARMv7) || src2.is_single_instruction()) { |
| 222 and_(dst, src1, src2, LeaveCC, cond); |
| 223 return; |
| 224 } |
| 225 int32_t immediate = src2.immediate(); |
| 226 if (immediate == 0) { |
| 227 mov(dst, Operand(0), LeaveCC, cond); |
| 228 return; |
| 229 } |
| 230 if (IsPowerOf2(immediate + 1) && ((immediate & 1) != 0)) { |
| 231 ubfx(dst, src1, 0, WhichPowerOf2(immediate + 1), cond); |
| 232 return; |
| 233 } |
| 234 and_(dst, src1, src2, LeaveCC, cond); |
| 235 } |
| 236 |
| 237 |
| 238 void MacroAssembler::Ubfx(Register dst, Register src1, int lsb, int width, |
| 239 Condition cond) { |
| 240 ASSERT(lsb < 32); |
| 241 if (!CpuFeatures::IsSupported(ARMv7)) { |
| 242 int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); |
| 243 and_(dst, src1, Operand(mask), LeaveCC, cond); |
| 244 if (lsb != 0) { |
| 245 mov(dst, Operand(dst, LSR, lsb), LeaveCC, cond); |
| 246 } |
| 247 } else { |
| 248 ubfx(dst, src1, lsb, width, cond); |
| 249 } |
| 250 } |
| 251 |
| 252 |
| 253 void MacroAssembler::Sbfx(Register dst, Register src1, int lsb, int width, |
| 254 Condition cond) { |
| 255 ASSERT(lsb < 32); |
| 256 if (!CpuFeatures::IsSupported(ARMv7)) { |
| 257 int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); |
| 258 and_(dst, src1, Operand(mask), LeaveCC, cond); |
| 259 int shift_up = 32 - lsb - width; |
| 260 int shift_down = lsb + shift_up; |
| 261 if (shift_up != 0) { |
| 262 mov(dst, Operand(dst, LSL, shift_up), LeaveCC, cond); |
| 263 } |
| 264 if (shift_down != 0) { |
| 265 mov(dst, Operand(dst, ASR, shift_down), LeaveCC, cond); |
| 266 } |
| 267 } else { |
| 268 sbfx(dst, src1, lsb, width, cond); |
| 269 } |
| 270 } |
| 271 |
| 272 |
219 void MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { | 273 void MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { |
220 // Empty the const pool. | 274 // Empty the const pool. |
221 CheckConstPool(true, true); | 275 CheckConstPool(true, true); |
222 add(pc, pc, Operand(index, | 276 add(pc, pc, Operand(index, |
223 LSL, | 277 LSL, |
224 assembler::arm::Instr::kInstrSizeLog2 - kSmiTagSize)); | 278 assembler::arm::Instr::kInstrSizeLog2 - kSmiTagSize)); |
225 BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); | 279 BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); |
226 nop(); // Jump table alignment. | 280 nop(); // Jump table alignment. |
227 for (int i = 0; i < targets.length(); i++) { | 281 for (int i = 0; i < targets.length(); i++) { |
228 b(targets[i]); | 282 b(targets[i]); |
(...skipping 1515 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1744 | 1798 |
1745 void CodePatcher::Emit(Address addr) { | 1799 void CodePatcher::Emit(Address addr) { |
1746 masm()->emit(reinterpret_cast<Instr>(addr)); | 1800 masm()->emit(reinterpret_cast<Instr>(addr)); |
1747 } | 1801 } |
1748 #endif // ENABLE_DEBUGGER_SUPPORT | 1802 #endif // ENABLE_DEBUGGER_SUPPORT |
1749 | 1803 |
1750 | 1804 |
1751 } } // namespace v8::internal | 1805 } } // namespace v8::internal |
1752 | 1806 |
1753 #endif // V8_TARGET_ARCH_ARM | 1807 #endif // V8_TARGET_ARCH_ARM |
OLD | NEW |