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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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| 263 | 263 |
| 264 const Instr kSwRegFpNegOffsetPattern = SW | (Register::kCode_fp << kRsShift) | | 264 const Instr kSwRegFpNegOffsetPattern = SW | (Register::kCode_fp << kRsShift) | |
| 265 (kNegOffset & kImm16Mask); // NOLINT | 265 (kNegOffset & kImm16Mask); // NOLINT |
| 266 // A mask for the Rt register for push, pop, lw, sw instructions. | 266 // A mask for the Rt register for push, pop, lw, sw instructions. |
| 267 const Instr kRtMask = kRtFieldMask; | 267 const Instr kRtMask = kRtFieldMask; |
| 268 const Instr kLwSwInstrTypeMask = 0xffe00000; | 268 const Instr kLwSwInstrTypeMask = 0xffe00000; |
| 269 const Instr kLwSwInstrArgumentMask = ~kLwSwInstrTypeMask; | 269 const Instr kLwSwInstrArgumentMask = ~kLwSwInstrTypeMask; |
| 270 const Instr kLwSwOffsetMask = kImm16Mask; | 270 const Instr kLwSwOffsetMask = kImm16Mask; |
| 271 | 271 |
| 272 Assembler::Assembler(IsolateData isolate_data, void* buffer, int buffer_size) | 272 Assembler::Assembler(IsolateData isolate_data, void* buffer, int buffer_size) |
| 273 : AssemblerBase(isolate_data, buffer, buffer_size), | 273 : AssemblerBase(isolate_data, buffer, buffer_size) { |
| 274 recorded_ast_id_(TypeFeedbackId::None()) { | |
| 275 reloc_info_writer.Reposition(buffer_ + buffer_size_, pc_); | 274 reloc_info_writer.Reposition(buffer_ + buffer_size_, pc_); |
| 276 | 275 |
| 277 last_trampoline_pool_end_ = 0; | 276 last_trampoline_pool_end_ = 0; |
| 278 no_trampoline_pool_before_ = 0; | 277 no_trampoline_pool_before_ = 0; |
| 279 trampoline_pool_blocked_nesting_ = 0; | 278 trampoline_pool_blocked_nesting_ = 0; |
| 280 // We leave space (16 * kTrampolineSlotsSize) | 279 // We leave space (16 * kTrampolineSlotsSize) |
| 281 // for BlockTrampolinePoolScope buffer. | 280 // for BlockTrampolinePoolScope buffer. |
| 282 next_buffer_check_ = FLAG_force_long_branches | 281 next_buffer_check_ = FLAG_force_long_branches |
| 283 ? kMaxInt : kMaxBranchOffset - kTrampolineSlotsSize * 16; | 282 ? kMaxInt : kMaxBranchOffset - kTrampolineSlotsSize * 16; |
| 284 internal_trampoline_exception_ = false; | 283 internal_trampoline_exception_ = false; |
| 285 last_bound_pos_ = 0; | 284 last_bound_pos_ = 0; |
| 286 | 285 |
| 287 trampoline_emitted_ = FLAG_force_long_branches; | 286 trampoline_emitted_ = FLAG_force_long_branches; |
| 288 unbound_labels_count_ = 0; | 287 unbound_labels_count_ = 0; |
| 289 block_buffer_growth_ = false; | 288 block_buffer_growth_ = false; |
| 290 | |
| 291 ClearRecordedAstId(); | |
| 292 } | 289 } |
| 293 | 290 |
| 294 void Assembler::GetCode(Isolate* isolate, CodeDesc* desc) { | 291 void Assembler::GetCode(Isolate* isolate, CodeDesc* desc) { |
| 295 EmitForbiddenSlotInstruction(); | 292 EmitForbiddenSlotInstruction(); |
| 296 DCHECK(pc_ <= reloc_info_writer.pos()); // No overlap. | 293 DCHECK(pc_ <= reloc_info_writer.pos()); // No overlap. |
| 297 // Set up code descriptor. | 294 // Set up code descriptor. |
| 298 desc->buffer = buffer_; | 295 desc->buffer = buffer_; |
| 299 desc->buffer_size = buffer_size_; | 296 desc->buffer_size = buffer_size_; |
| 300 desc->instr_size = pc_offset(); | 297 desc->instr_size = pc_offset(); |
| 301 desc->reloc_size = | 298 desc->reloc_size = |
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| 3921 DCHECK(RelocInfo::IsDebugBreakSlot(rmode) || RelocInfo::IsComment(rmode)); | 3918 DCHECK(RelocInfo::IsDebugBreakSlot(rmode) || RelocInfo::IsComment(rmode)); |
| 3922 // These modes do not need an entry in the constant pool. | 3919 // These modes do not need an entry in the constant pool. |
| 3923 } | 3920 } |
| 3924 if (!RelocInfo::IsNone(rinfo.rmode())) { | 3921 if (!RelocInfo::IsNone(rinfo.rmode())) { |
| 3925 // Don't record external references unless the heap will be serialized. | 3922 // Don't record external references unless the heap will be serialized. |
| 3926 if (rmode == RelocInfo::EXTERNAL_REFERENCE && | 3923 if (rmode == RelocInfo::EXTERNAL_REFERENCE && |
| 3927 !serializer_enabled() && !emit_debug_code()) { | 3924 !serializer_enabled() && !emit_debug_code()) { |
| 3928 return; | 3925 return; |
| 3929 } | 3926 } |
| 3930 DCHECK(buffer_space() >= kMaxRelocSize); // Too late to grow buffer here. | 3927 DCHECK(buffer_space() >= kMaxRelocSize); // Too late to grow buffer here. |
| 3931 if (rmode == RelocInfo::CODE_TARGET_WITH_ID) { | 3928 DCHECK(rmode != RelocInfo::CODE_TARGET_WITH_ID); |
| 3932 RelocInfo reloc_info_with_ast_id(pc_, rmode, RecordedAstId().ToInt(), | 3929 reloc_info_writer.Write(&rinfo); |
| 3933 NULL); | |
| 3934 ClearRecordedAstId(); | |
| 3935 reloc_info_writer.Write(&reloc_info_with_ast_id); | |
| 3936 } else { | |
| 3937 reloc_info_writer.Write(&rinfo); | |
| 3938 } | |
| 3939 } | 3930 } |
| 3940 } | 3931 } |
| 3941 | 3932 |
| 3942 | 3933 |
| 3943 void Assembler::BlockTrampolinePoolFor(int instructions) { | 3934 void Assembler::BlockTrampolinePoolFor(int instructions) { |
| 3944 CheckTrampolinePoolQuick(instructions); | 3935 CheckTrampolinePoolQuick(instructions); |
| 3945 BlockTrampolinePoolBefore(pc_offset() + instructions * kInstrSize); | 3936 BlockTrampolinePoolBefore(pc_offset() + instructions * kInstrSize); |
| 3946 } | 3937 } |
| 3947 | 3938 |
| 3948 | 3939 |
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| 4085 | 4076 |
| 4086 if (icache_flush_mode != SKIP_ICACHE_FLUSH) { | 4077 if (icache_flush_mode != SKIP_ICACHE_FLUSH) { |
| 4087 Assembler::FlushICache(isolate, pc, 4 * Assembler::kInstrSize); | 4078 Assembler::FlushICache(isolate, pc, 4 * Assembler::kInstrSize); |
| 4088 } | 4079 } |
| 4089 } | 4080 } |
| 4090 | 4081 |
| 4091 } // namespace internal | 4082 } // namespace internal |
| 4092 } // namespace v8 | 4083 } // namespace v8 |
| 4093 | 4084 |
| 4094 #endif // V8_TARGET_ARCH_MIPS64 | 4085 #endif // V8_TARGET_ARCH_MIPS64 |
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