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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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| 542 inline static void deserialization_set_special_target_at( | 542 inline static void deserialization_set_special_target_at( |
| 543 Address instruction_payload, Code* code, Address target) { | 543 Address instruction_payload, Code* code, Address target) { |
| 544 set_target_address_at( | 544 set_target_address_at( |
| 545 instruction_payload - kInstructionsFor32BitConstant * kInstrSize, | 545 instruction_payload - kInstructionsFor32BitConstant * kInstrSize, |
| 546 code, | 546 code, |
| 547 target); | 547 target); |
| 548 } | 548 } |
| 549 | 549 |
| 550 // This sets the internal reference at the pc. | 550 // This sets the internal reference at the pc. |
| 551 inline static void deserialization_set_target_internal_reference_at( | 551 inline static void deserialization_set_target_internal_reference_at( |
| 552 Address pc, Address target); | 552 Address pc, Address target, |
| 553 RelocInfo::Mode mode = RelocInfo::INTERNAL_REFERENCE); |
| 553 | 554 |
| 554 // Size of an instruction. | 555 // Size of an instruction. |
| 555 static const int kInstrSize = sizeof(Instr); | 556 static const int kInstrSize = sizeof(Instr); |
| 556 | 557 |
| 557 // Difference between address of current opcode and target address offset. | 558 // Difference between address of current opcode and target address offset. |
| 558 static const int kBranchPCOffset = 4; | 559 static const int kBranchPCOffset = 4; |
| 559 | 560 |
| 560 // Here we are patching the address in the LUI/ORI instruction pair. | 561 // Here we are patching the address in the LUI/ORI instruction pair. |
| 561 // These values are used in the serialization process and must be zero for | 562 // These values are used in the serialization process and must be zero for |
| 562 // MIPS platform, as Code, Embedded Object or External-reference pointers | 563 // MIPS platform, as Code, Embedded Object or External-reference pointers |
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| 1184 void EndBlockGrowBuffer() { | 1185 void EndBlockGrowBuffer() { |
| 1185 DCHECK(block_buffer_growth_); | 1186 DCHECK(block_buffer_growth_); |
| 1186 block_buffer_growth_ = false; | 1187 block_buffer_growth_ = false; |
| 1187 } | 1188 } |
| 1188 | 1189 |
| 1189 bool is_buffer_growth_blocked() const { | 1190 bool is_buffer_growth_blocked() const { |
| 1190 return block_buffer_growth_; | 1191 return block_buffer_growth_; |
| 1191 } | 1192 } |
| 1192 | 1193 |
| 1193 private: | 1194 private: |
| 1195 inline static void set_target_internal_reference_encoded_at(Address pc, |
| 1196 Address target); |
| 1197 |
| 1194 // Buffer size and constant pool distance are checked together at regular | 1198 // Buffer size and constant pool distance are checked together at regular |
| 1195 // intervals of kBufferCheckInterval emitted bytes. | 1199 // intervals of kBufferCheckInterval emitted bytes. |
| 1196 static const int kBufferCheckInterval = 1*KB/2; | 1200 static const int kBufferCheckInterval = 1*KB/2; |
| 1197 | 1201 |
| 1198 // Code generation. | 1202 // Code generation. |
| 1199 // The relocation writer's position is at least kGap bytes below the end of | 1203 // The relocation writer's position is at least kGap bytes below the end of |
| 1200 // the generated instructions. This is so that multi-instruction sequences do | 1204 // the generated instructions. This is so that multi-instruction sequences do |
| 1201 // not have to check for overflow. The same is true for writes of large | 1205 // not have to check for overflow. The same is true for writes of large |
| 1202 // relocation info entries. | 1206 // relocation info entries. |
| 1203 static const int kGap = 32; | 1207 static const int kGap = 32; |
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| 1394 class EnsureSpace BASE_EMBEDDED { | 1398 class EnsureSpace BASE_EMBEDDED { |
| 1395 public: | 1399 public: |
| 1396 explicit EnsureSpace(Assembler* assembler) { | 1400 explicit EnsureSpace(Assembler* assembler) { |
| 1397 assembler->CheckBuffer(); | 1401 assembler->CheckBuffer(); |
| 1398 } | 1402 } |
| 1399 }; | 1403 }; |
| 1400 | 1404 |
| 1401 } } // namespace v8::internal | 1405 } } // namespace v8::internal |
| 1402 | 1406 |
| 1403 #endif // V8_ARM_ASSEMBLER_MIPS_H_ | 1407 #endif // V8_ARM_ASSEMBLER_MIPS_H_ |
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