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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_GLOBALS_H_ | 5 #ifndef V8_GLOBALS_H_ |
6 #define V8_GLOBALS_H_ | 6 #define V8_GLOBALS_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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67 #define USE_SIMULATOR 1 | 67 #define USE_SIMULATOR 1 |
68 #endif | 68 #endif |
69 #if (V8_TARGET_ARCH_MIPS && !V8_HOST_ARCH_MIPS) | 69 #if (V8_TARGET_ARCH_MIPS && !V8_HOST_ARCH_MIPS) |
70 #define USE_SIMULATOR 1 | 70 #define USE_SIMULATOR 1 |
71 #endif | 71 #endif |
72 #if (V8_TARGET_ARCH_MIPS64 && !V8_HOST_ARCH_MIPS64) | 72 #if (V8_TARGET_ARCH_MIPS64 && !V8_HOST_ARCH_MIPS64) |
73 #define USE_SIMULATOR 1 | 73 #define USE_SIMULATOR 1 |
74 #endif | 74 #endif |
75 #endif | 75 #endif |
76 | 76 |
77 // Determine whether the architecture uses an out-of-line constant pool. | 77 // Determine whether the architecture uses an embedded constant pool |
78 #define V8_OOL_CONSTANT_POOL 0 | 78 // (contiguous constant pool embedded in code object). |
| 79 #if V8_TARGET_ARCH_PPC |
| 80 #define V8_EMBEDDED_CONSTANT_POOL 1 |
| 81 #else |
| 82 #define V8_EMBEDDED_CONSTANT_POOL 0 |
| 83 #endif |
79 | 84 |
80 #ifdef V8_TARGET_ARCH_ARM | 85 #ifdef V8_TARGET_ARCH_ARM |
81 // Set stack limit lower for ARM than for other architectures because | 86 // Set stack limit lower for ARM than for other architectures because |
82 // stack allocating MacroAssembler takes 120K bytes. | 87 // stack allocating MacroAssembler takes 120K bytes. |
83 // See issue crbug.com/405338 | 88 // See issue crbug.com/405338 |
84 #define V8_DEFAULT_STACK_SIZE_KB 864 | 89 #define V8_DEFAULT_STACK_SIZE_KB 864 |
85 #else | 90 #else |
86 // Slightly less than 1MB, since Windows' default stack size for | 91 // Slightly less than 1MB, since Windows' default stack size for |
87 // the main execution thread is 1MB for both 32 and 64-bit. | 92 // the main execution thread is 1MB for both 32 and 64-bit. |
88 #define V8_DEFAULT_STACK_SIZE_KB 984 | 93 #define V8_DEFAULT_STACK_SIZE_KB 984 |
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503 // ParseRestriction is used to restrict the set of valid statements in a | 508 // ParseRestriction is used to restrict the set of valid statements in a |
504 // unit of compilation. Restriction violations cause a syntax error. | 509 // unit of compilation. Restriction violations cause a syntax error. |
505 enum ParseRestriction { | 510 enum ParseRestriction { |
506 NO_PARSE_RESTRICTION, // All expressions are allowed. | 511 NO_PARSE_RESTRICTION, // All expressions are allowed. |
507 ONLY_SINGLE_FUNCTION_LITERAL // Only a single FunctionLiteral expression. | 512 ONLY_SINGLE_FUNCTION_LITERAL // Only a single FunctionLiteral expression. |
508 }; | 513 }; |
509 | 514 |
510 // A CodeDesc describes a buffer holding instructions and relocation | 515 // A CodeDesc describes a buffer holding instructions and relocation |
511 // information. The instructions start at the beginning of the buffer | 516 // information. The instructions start at the beginning of the buffer |
512 // and grow forward, the relocation information starts at the end of | 517 // and grow forward, the relocation information starts at the end of |
513 // the buffer and grows backward. | 518 // the buffer and grows backward. A constant pool may exist at the |
| 519 // end of the instructions. |
514 // | 520 // |
515 // |<--------------- buffer_size ---------------->| | 521 // |<--------------- buffer_size ----------------------------------->| |
516 // |<-- instr_size -->| |<-- reloc_size -->| | 522 // |<------------- instr_size ---------->| |<-- reloc_size -->| |
517 // +==================+========+==================+ | 523 // | |<- const_pool_size ->| | |
518 // | instructions | free | reloc info | | 524 // +=====================================+========+==================+ |
519 // +==================+========+==================+ | 525 // | instructions | data | free | reloc info | |
| 526 // +=====================================+========+==================+ |
520 // ^ | 527 // ^ |
521 // | | 528 // | |
522 // buffer | 529 // buffer |
523 | 530 |
524 struct CodeDesc { | 531 struct CodeDesc { |
525 byte* buffer; | 532 byte* buffer; |
526 int buffer_size; | 533 int buffer_size; |
527 int instr_size; | 534 int instr_size; |
528 int reloc_size; | 535 int reloc_size; |
| 536 int constant_pool_size; |
529 Assembler* origin; | 537 Assembler* origin; |
530 }; | 538 }; |
531 | 539 |
532 | 540 |
533 // Callback function used for iterating objects in heap spaces, | 541 // Callback function used for iterating objects in heap spaces, |
534 // for example, scanning heap objects. | 542 // for example, scanning heap objects. |
535 typedef int (*HeapObjectCallback)(HeapObject* obj); | 543 typedef int (*HeapObjectCallback)(HeapObject* obj); |
536 | 544 |
537 | 545 |
538 // Callback function used for checking constraints when copying/relocating | 546 // Callback function used for checking constraints when copying/relocating |
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962 inline FunctionKind WithObjectLiteralBit(FunctionKind kind) { | 970 inline FunctionKind WithObjectLiteralBit(FunctionKind kind) { |
963 kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral); | 971 kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral); |
964 DCHECK(IsValidFunctionKind(kind)); | 972 DCHECK(IsValidFunctionKind(kind)); |
965 return kind; | 973 return kind; |
966 } | 974 } |
967 } } // namespace v8::internal | 975 } } // namespace v8::internal |
968 | 976 |
969 namespace i = v8::internal; | 977 namespace i = v8::internal; |
970 | 978 |
971 #endif // V8_GLOBALS_H_ | 979 #endif // V8_GLOBALS_H_ |
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