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Issue 9227007: Version 3.8.6 (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 8 years, 11 months ago
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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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343 343
344 // Clear the buffer in debug mode unless it was provided by the 344 // Clear the buffer in debug mode unless it was provided by the
345 // caller in which case we can't be sure it's okay to overwrite 345 // caller in which case we can't be sure it's okay to overwrite
346 // existing code in it; see CodePatcher::CodePatcher(...). 346 // existing code in it; see CodePatcher::CodePatcher(...).
347 #ifdef DEBUG 347 #ifdef DEBUG
348 if (own_buffer_) { 348 if (own_buffer_) {
349 memset(buffer_, 0xCC, buffer_size); // int3 349 memset(buffer_, 0xCC, buffer_size); // int3
350 } 350 }
351 #endif 351 #endif
352 352
353 // Setup buffer pointers. 353 // Set up buffer pointers.
354 ASSERT(buffer_ != NULL); 354 ASSERT(buffer_ != NULL);
355 pc_ = buffer_; 355 pc_ = buffer_;
356 reloc_info_writer.Reposition(buffer_ + buffer_size, pc_); 356 reloc_info_writer.Reposition(buffer_ + buffer_size, pc_);
357 357
358 #ifdef GENERATED_CODE_COVERAGE 358 #ifdef GENERATED_CODE_COVERAGE
359 InitCoverageLog(); 359 InitCoverageLog();
360 #endif 360 #endif
361 } 361 }
362 362
363 363
364 Assembler::~Assembler() { 364 Assembler::~Assembler() {
365 if (own_buffer_) { 365 if (own_buffer_) {
366 if (isolate()->assembler_spare_buffer() == NULL && 366 if (isolate()->assembler_spare_buffer() == NULL &&
367 buffer_size_ == kMinimalBufferSize) { 367 buffer_size_ == kMinimalBufferSize) {
368 isolate()->set_assembler_spare_buffer(buffer_); 368 isolate()->set_assembler_spare_buffer(buffer_);
369 } else { 369 } else {
370 DeleteArray(buffer_); 370 DeleteArray(buffer_);
371 } 371 }
372 } 372 }
373 } 373 }
374 374
375 375
376 void Assembler::GetCode(CodeDesc* desc) { 376 void Assembler::GetCode(CodeDesc* desc) {
377 // Finalize code (at this point overflow() may be true, but the gap ensures 377 // Finalize code (at this point overflow() may be true, but the gap ensures
378 // that we are still not overlapping instructions and relocation info). 378 // that we are still not overlapping instructions and relocation info).
379 ASSERT(pc_ <= reloc_info_writer.pos()); // No overlap. 379 ASSERT(pc_ <= reloc_info_writer.pos()); // No overlap.
380 // Setup code descriptor. 380 // Set up code descriptor.
381 desc->buffer = buffer_; 381 desc->buffer = buffer_;
382 desc->buffer_size = buffer_size_; 382 desc->buffer_size = buffer_size_;
383 desc->instr_size = pc_offset(); 383 desc->instr_size = pc_offset();
384 desc->reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos(); 384 desc->reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos();
385 desc->origin = this; 385 desc->origin = this;
386 } 386 }
387 387
388 388
389 void Assembler::Align(int m) { 389 void Assembler::Align(int m) {
390 ASSERT(IsPowerOf2(m)); 390 ASSERT(IsPowerOf2(m));
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2450 } else { 2450 } else {
2451 desc.buffer_size = 2*buffer_size_; 2451 desc.buffer_size = 2*buffer_size_;
2452 } 2452 }
2453 // Some internal data structures overflow for very large buffers, 2453 // Some internal data structures overflow for very large buffers,
2454 // they must ensure that kMaximalBufferSize is not too large. 2454 // they must ensure that kMaximalBufferSize is not too large.
2455 if ((desc.buffer_size > kMaximalBufferSize) || 2455 if ((desc.buffer_size > kMaximalBufferSize) ||
2456 (desc.buffer_size > isolate()->heap()->MaxOldGenerationSize())) { 2456 (desc.buffer_size > isolate()->heap()->MaxOldGenerationSize())) {
2457 V8::FatalProcessOutOfMemory("Assembler::GrowBuffer"); 2457 V8::FatalProcessOutOfMemory("Assembler::GrowBuffer");
2458 } 2458 }
2459 2459
2460 // Setup new buffer. 2460 // Set up new buffer.
2461 desc.buffer = NewArray<byte>(desc.buffer_size); 2461 desc.buffer = NewArray<byte>(desc.buffer_size);
2462 desc.instr_size = pc_offset(); 2462 desc.instr_size = pc_offset();
2463 desc.reloc_size = (buffer_ + buffer_size_) - (reloc_info_writer.pos()); 2463 desc.reloc_size = (buffer_ + buffer_size_) - (reloc_info_writer.pos());
2464 2464
2465 // Clear the buffer in debug mode. Use 'int3' instructions to make 2465 // Clear the buffer in debug mode. Use 'int3' instructions to make
2466 // sure to get into problems if we ever run uninitialized code. 2466 // sure to get into problems if we ever run uninitialized code.
2467 #ifdef DEBUG 2467 #ifdef DEBUG
2468 memset(desc.buffer, 0xCC, desc.buffer_size); 2468 memset(desc.buffer, 0xCC, desc.buffer_size);
2469 #endif 2469 #endif
2470 2470
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2613 fprintf(coverage_log, "%s\n", file_line); 2613 fprintf(coverage_log, "%s\n", file_line);
2614 fflush(coverage_log); 2614 fflush(coverage_log);
2615 } 2615 }
2616 } 2616 }
2617 2617
2618 #endif 2618 #endif
2619 2619
2620 } } // namespace v8::internal 2620 } } // namespace v8::internal
2621 2621
2622 #endif // V8_TARGET_ARCH_IA32 2622 #endif // V8_TARGET_ARCH_IA32
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