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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 "include/v8stdint.h" | 8 #include "include/v8stdint.h" |
9 | 9 |
10 #include "src/base/build_config.h" | 10 #include "src/base/build_config.h" |
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146 const int kRegisterSize = kPointerSize; | 146 const int kRegisterSize = kPointerSize; |
147 const int kPCOnStackSize = kRegisterSize; | 147 const int kPCOnStackSize = kRegisterSize; |
148 const int kFPOnStackSize = kRegisterSize; | 148 const int kFPOnStackSize = kRegisterSize; |
149 | 149 |
150 const int kDoubleSizeLog2 = 3; | 150 const int kDoubleSizeLog2 = 3; |
151 | 151 |
152 #if V8_HOST_ARCH_64_BIT | 152 #if V8_HOST_ARCH_64_BIT |
153 const int kPointerSizeLog2 = 3; | 153 const int kPointerSizeLog2 = 3; |
154 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000); | 154 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000); |
155 const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF); | 155 const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF); |
156 const bool kRequiresCodeRange = true; | 156 const bool kIs64BitArch = true; |
157 const int kMaximalCodeRangeSize = 512 * MB; | |
158 #else | 157 #else |
159 const int kPointerSizeLog2 = 2; | 158 const int kPointerSizeLog2 = 2; |
160 const intptr_t kIntptrSignBit = 0x80000000; | 159 const intptr_t kIntptrSignBit = 0x80000000; |
161 const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu; | 160 const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu; |
162 const bool kRequiresCodeRange = false; | 161 const bool kIs64BitArch = false; |
163 const int kMaximalCodeRangeSize = 0 * MB; | |
164 #endif | 162 #endif |
165 | 163 |
166 const int kBitsPerByte = 8; | 164 const int kBitsPerByte = 8; |
167 const int kBitsPerByteLog2 = 3; | 165 const int kBitsPerByteLog2 = 3; |
168 const int kBitsPerPointer = kPointerSize * kBitsPerByte; | 166 const int kBitsPerPointer = kPointerSize * kBitsPerByte; |
169 const int kBitsPerInt = kIntSize * kBitsPerByte; | 167 const int kBitsPerInt = kIntSize * kBitsPerByte; |
170 | 168 |
171 // IEEE 754 single precision floating point number bit layout. | 169 // IEEE 754 single precision floating point number bit layout. |
172 const uint32_t kBinary32SignMask = 0x80000000u; | 170 const uint32_t kBinary32SignMask = 0x80000000u; |
173 const uint32_t kBinary32ExponentMask = 0x7f800000u; | 171 const uint32_t kBinary32ExponentMask = 0x7f800000u; |
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759 enum MinusZeroMode { | 757 enum MinusZeroMode { |
760 TREAT_MINUS_ZERO_AS_ZERO, | 758 TREAT_MINUS_ZERO_AS_ZERO, |
761 FAIL_ON_MINUS_ZERO | 759 FAIL_ON_MINUS_ZERO |
762 }; | 760 }; |
763 | 761 |
764 } } // namespace v8::internal | 762 } } // namespace v8::internal |
765 | 763 |
766 namespace i = v8::internal; | 764 namespace i = v8::internal; |
767 | 765 |
768 #endif // V8_GLOBALS_H_ | 766 #endif // V8_GLOBALS_H_ |
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