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| 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 2 // All Rights Reserved. | 2 // All Rights Reserved. |
| 3 // | 3 // |
| 4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
| 5 // modification, are permitted provided that the following conditions | 5 // modification, are permitted provided that the following conditions |
| 6 // are met: | 6 // are met: |
| 7 // | 7 // |
| 8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
| 9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
| 10 // | 10 // |
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| 382 | 382 |
| 383 | 383 |
| 384 void Assembler::Align(int m) { | 384 void Assembler::Align(int m) { |
| 385 ASSERT(m >= 4 && IsPowerOf2(m)); | 385 ASSERT(m >= 4 && IsPowerOf2(m)); |
| 386 while ((pc_offset() & (m - 1)) != 0) { | 386 while ((pc_offset() & (m - 1)) != 0) { |
| 387 nop(); | 387 nop(); |
| 388 } | 388 } |
| 389 } | 389 } |
| 390 | 390 |
| 391 | 391 |
| 392 void Assembler::CodeTargetAlign() { |
| 393 Align(16); // Tentative value. |
| 394 } |
| 395 |
| 396 |
| 392 bool Assembler::IsNop(Instr instr, int type) { | 397 bool Assembler::IsNop(Instr instr, int type) { |
| 393 // Check for mov rx, rx. | 398 // Check for mov rx, rx. |
| 394 ASSERT(0 <= type && type <= 14); // mov pc, pc is not a nop. | 399 ASSERT(0 <= type && type <= 14); // mov pc, pc is not a nop. |
| 395 return instr == (al | 13*B21 | type*B12 | type); | 400 return instr == (al | 13*B21 | type*B12 | type); |
| 396 } | 401 } |
| 397 | 402 |
| 398 | 403 |
| 399 bool Assembler::IsBranch(Instr instr) { | 404 bool Assembler::IsBranch(Instr instr) { |
| 400 return (instr & (B27 | B25)) == (B27 | B25); | 405 return (instr & (B27 | B25)) == (B27 | B25); |
| 401 } | 406 } |
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| 2333 | 2338 |
| 2334 // Since a constant pool was just emitted, move the check offset forward by | 2339 // Since a constant pool was just emitted, move the check offset forward by |
| 2335 // the standard interval. | 2340 // the standard interval. |
| 2336 next_buffer_check_ = pc_offset() + kCheckConstInterval; | 2341 next_buffer_check_ = pc_offset() + kCheckConstInterval; |
| 2337 } | 2342 } |
| 2338 | 2343 |
| 2339 | 2344 |
| 2340 } } // namespace v8::internal | 2345 } } // namespace v8::internal |
| 2341 | 2346 |
| 2342 #endif // V8_TARGET_ARCH_ARM | 2347 #endif // V8_TARGET_ARCH_ARM |
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