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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // | 2 // |
3 // Redistribution and use in source and binary forms, with or without | 3 // Redistribution and use in source and binary forms, with or without |
4 // modification, are permitted provided that the following conditions are | 4 // modification, are permitted provided that the following conditions are |
5 // met: | 5 // met: |
6 // | 6 // |
7 // * Redistributions of source code must retain the above copyright | 7 // * Redistributions of source code must retain the above copyright |
8 // notice, this list of conditions and the following disclaimer. | 8 // notice, this list of conditions and the following disclaimer. |
9 // * Redistributions in binary form must reproduce the above | 9 // * Redistributions in binary form must reproduce the above |
10 // copyright notice, this list of conditions and the following | 10 // copyright notice, this list of conditions and the following |
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182 Address RelocInfo::wasm_memory_reference() { | 182 Address RelocInfo::wasm_memory_reference() { |
183 DCHECK(IsWasmMemoryReference(rmode_)); | 183 DCHECK(IsWasmMemoryReference(rmode_)); |
184 return Memory::Address_at(Assembler::target_pointer_address_at(pc_)); | 184 return Memory::Address_at(Assembler::target_pointer_address_at(pc_)); |
185 } | 185 } |
186 | 186 |
187 uint32_t RelocInfo::wasm_memory_size_reference() { | 187 uint32_t RelocInfo::wasm_memory_size_reference() { |
188 DCHECK(IsWasmMemorySizeReference(rmode_)); | 188 DCHECK(IsWasmMemorySizeReference(rmode_)); |
189 return Memory::uint32_at(Assembler::target_pointer_address_at(pc_)); | 189 return Memory::uint32_at(Assembler::target_pointer_address_at(pc_)); |
190 } | 190 } |
191 | 191 |
| 192 Address RelocInfo::wasm_global_reference() { |
| 193 DCHECK(IsWasmGlobalReference(rmode_)); |
| 194 return Memory::Address_at(Assembler::target_pointer_address_at(pc_)); |
| 195 } |
| 196 |
192 void RelocInfo::update_wasm_memory_reference( | 197 void RelocInfo::update_wasm_memory_reference( |
193 Address old_base, Address new_base, uint32_t old_size, uint32_t new_size, | 198 Address old_base, Address new_base, uint32_t old_size, uint32_t new_size, |
194 ICacheFlushMode icache_flush_mode) { | 199 ICacheFlushMode icache_flush_mode) { |
195 DCHECK(IsWasmMemoryReference(rmode_) || IsWasmMemorySizeReference(rmode_)); | 200 DCHECK(IsWasmMemoryReference(rmode_) || IsWasmMemorySizeReference(rmode_)); |
196 if (IsWasmMemoryReference(rmode_) && old_base != new_base) { | 201 if (IsWasmMemoryReference(rmode_) && old_base != new_base) { |
197 Address updated_memory_reference; | 202 Address updated_memory_reference; |
198 DCHECK(old_base <= wasm_memory_reference() && | 203 DCHECK(old_base <= wasm_memory_reference() && |
199 wasm_memory_reference() < old_base + old_size); | 204 wasm_memory_reference() < old_base + old_size); |
200 updated_memory_reference = new_base + (wasm_memory_reference() - old_base); | 205 updated_memory_reference = new_base + (wasm_memory_reference() - old_base); |
201 DCHECK(new_base <= updated_memory_reference && | 206 DCHECK(new_base <= updated_memory_reference && |
202 updated_memory_reference < new_base + new_size); | 207 updated_memory_reference < new_base + new_size); |
203 Assembler::set_target_address_at( | 208 Assembler::set_target_address_at( |
204 isolate_, pc_, host_, updated_memory_reference, icache_flush_mode); | 209 isolate_, pc_, host_, updated_memory_reference, icache_flush_mode); |
205 } else if (IsWasmMemorySizeReference(rmode_)) { | 210 } else if (IsWasmMemorySizeReference(rmode_)) { |
206 uint32_t updated_size_reference; | 211 uint32_t updated_size_reference; |
207 DCHECK(wasm_memory_size_reference() <= old_size); | 212 DCHECK(wasm_memory_size_reference() <= old_size); |
208 updated_size_reference = | 213 updated_size_reference = |
209 new_size + (wasm_memory_size_reference() - old_size); | 214 new_size + (wasm_memory_size_reference() - old_size); |
210 DCHECK(updated_size_reference <= new_size); | 215 DCHECK(updated_size_reference <= new_size); |
211 Memory::uint32_at(Assembler::target_pointer_address_at(pc_)) = | 216 Memory::uint32_at(Assembler::target_pointer_address_at(pc_)) = |
212 updated_size_reference; | 217 updated_size_reference; |
213 } else { | 218 } else { |
214 UNREACHABLE(); | 219 UNREACHABLE(); |
215 } | 220 } |
216 } | 221 } |
217 | 222 |
| 223 void RelocInfo::update_wasm_global_reference( |
| 224 Address old_base, Address new_base, ICacheFlushMode icache_flush_mode) { |
| 225 DCHECK(IsWasmGlobalReference(rmode_)); |
| 226 Address updated_reference; |
| 227 DCHECK(old_base <= wasm_global_reference()); |
| 228 updated_reference = new_base + (wasm_global_reference() - old_base); |
| 229 DCHECK(new_base <= updated_reference); |
| 230 Assembler::set_target_address_at(isolate_, pc_, host_, updated_reference, |
| 231 icache_flush_mode); |
| 232 } |
| 233 |
218 Register GetAllocatableRegisterThatIsNotOneOf(Register reg1, Register reg2, | 234 Register GetAllocatableRegisterThatIsNotOneOf(Register reg1, Register reg2, |
219 Register reg3, Register reg4) { | 235 Register reg3, Register reg4) { |
220 CPURegList regs(reg1, reg2, reg3, reg4); | 236 CPURegList regs(reg1, reg2, reg3, reg4); |
221 const RegisterConfiguration* config = | 237 const RegisterConfiguration* config = |
222 RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); | 238 RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
223 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { | 239 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
224 int code = config->GetAllocatableDoubleCode(i); | 240 int code = config->GetAllocatableDoubleCode(i); |
225 Register candidate = Register::from_code(code); | 241 Register candidate = Register::from_code(code); |
226 if (regs.IncludesAliasOf(candidate)) continue; | 242 if (regs.IncludesAliasOf(candidate)) continue; |
227 return candidate; | 243 return candidate; |
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3239 movk(scratch, (target_offset >> 32) & 0xFFFF, 32); | 3255 movk(scratch, (target_offset >> 32) & 0xFFFF, 32); |
3240 DCHECK((target_offset >> 48) == 0); | 3256 DCHECK((target_offset >> 48) == 0); |
3241 add(rd, rd, scratch); | 3257 add(rd, rd, scratch); |
3242 } | 3258 } |
3243 | 3259 |
3244 | 3260 |
3245 } // namespace internal | 3261 } // namespace internal |
3246 } // namespace v8 | 3262 } // namespace v8 |
3247 | 3263 |
3248 #endif // V8_TARGET_ARCH_ARM64 | 3264 #endif // V8_TARGET_ARCH_ARM64 |
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