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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 are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // 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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228 } | 228 } |
229 #endif | 229 #endif |
230 | 230 |
231 | 231 |
232 bool CpuFeatures::initialized_ = false; | 232 bool CpuFeatures::initialized_ = false; |
233 unsigned CpuFeatures::supported_ = 0; | 233 unsigned CpuFeatures::supported_ = 0; |
234 unsigned CpuFeatures::icache_line_size_ = 0; | 234 unsigned CpuFeatures::icache_line_size_ = 0; |
235 unsigned CpuFeatures::dcache_line_size_ = 0; | 235 unsigned CpuFeatures::dcache_line_size_ = 0; |
236 | 236 |
237 // ----------------------------------------------------------------------------- | 237 // ----------------------------------------------------------------------------- |
238 // Implementation of Label | |
239 | |
240 int Label::pos() const { | |
241 if (pos_ < 0) return -pos_ - 1; | |
242 if (pos_ > 0) return pos_ - 1; | |
243 UNREACHABLE(); | |
244 return 0; | |
245 } | |
246 | |
247 | |
248 // ----------------------------------------------------------------------------- | |
249 // Implementation of RelocInfoWriter and RelocIterator | 238 // Implementation of RelocInfoWriter and RelocIterator |
250 // | 239 // |
251 // Relocation information is written backwards in memory, from high addresses | 240 // Relocation information is written backwards in memory, from high addresses |
252 // towards low addresses, byte by byte. Therefore, in the encodings listed | 241 // towards low addresses, byte by byte. Therefore, in the encodings listed |
253 // below, the first byte listed it at the highest address, and successive | 242 // below, the first byte listed it at the highest address, and successive |
254 // bytes in the record are at progressively lower addresses. | 243 // bytes in the record are at progressively lower addresses. |
255 // | 244 // |
256 // Encoding | 245 // Encoding |
257 // | 246 // |
258 // The most common modes are given single-byte encodings. Also, it is | 247 // The most common modes are given single-byte encodings. Also, it is |
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1936 | 1925 |
1937 | 1926 |
1938 void Assembler::DataAlign(int m) { | 1927 void Assembler::DataAlign(int m) { |
1939 DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m)); | 1928 DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m)); |
1940 while ((pc_offset() & (m - 1)) != 0) { | 1929 while ((pc_offset() & (m - 1)) != 0) { |
1941 db(0); | 1930 db(0); |
1942 } | 1931 } |
1943 } | 1932 } |
1944 } // namespace internal | 1933 } // namespace internal |
1945 } // namespace v8 | 1934 } // namespace v8 |
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