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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_ARM64) | 6 #if defined(TARGET_ARCH_ARM64) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
10 #include "vm/compiler.h" | 10 #include "vm/compiler.h" |
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2066 } | 2066 } |
2067 | 2067 |
2068 | 2068 |
2069 // Called from megamorphic calls. | 2069 // Called from megamorphic calls. |
2070 // R0: receiver | 2070 // R0: receiver |
2071 // R5: MegamorphicCache (preserved) | 2071 // R5: MegamorphicCache (preserved) |
2072 // Passed to target: | 2072 // Passed to target: |
2073 // CODE_REG: target Code | 2073 // CODE_REG: target Code |
2074 // R4: arguments descriptor | 2074 // R4: arguments descriptor |
2075 void StubCode::GenerateMegamorphicCallStub(Assembler* assembler) { | 2075 void StubCode::GenerateMegamorphicCallStub(Assembler* assembler) { |
2076 __ NoMonomorphicCheckedEntry(); | |
2077 | |
2078 // Jump if receiver is a smi. | 2076 // Jump if receiver is a smi. |
2079 Label smi_case; | 2077 Label smi_case; |
2080 __ TestImmediate(R0, kSmiTagMask); | 2078 __ TestImmediate(R0, kSmiTagMask); |
2081 __ b(&smi_case, EQ); | 2079 __ b(&smi_case, EQ); |
2082 | 2080 |
2083 // Loads the cid of the object. | 2081 // Loads the cid of the object. |
2084 __ LoadClassId(R0, R0); | 2082 __ LoadClassId(R0, R0); |
2085 | 2083 |
2086 Label cid_loaded; | 2084 Label cid_loaded; |
2087 __ Bind(&cid_loaded); | 2085 __ Bind(&cid_loaded); |
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2141 } | 2139 } |
2142 | 2140 |
2143 | 2141 |
2144 // Called from switchable IC calls. | 2142 // Called from switchable IC calls. |
2145 // R0: receiver | 2143 // R0: receiver |
2146 // R5: ICData (preserved) | 2144 // R5: ICData (preserved) |
2147 // Passed to target: | 2145 // Passed to target: |
2148 // CODE_REG: target Code object | 2146 // CODE_REG: target Code object |
2149 // R4: arguments descriptor | 2147 // R4: arguments descriptor |
2150 void StubCode::GenerateICCallThroughFunctionStub(Assembler* assembler) { | 2148 void StubCode::GenerateICCallThroughFunctionStub(Assembler* assembler) { |
2151 __ NoMonomorphicCheckedEntry(); | |
2152 | |
2153 Label loop, found, miss; | 2149 Label loop, found, miss; |
2154 __ ldr(R4, FieldAddress(R5, ICData::arguments_descriptor_offset())); | 2150 __ ldr(R4, FieldAddress(R5, ICData::arguments_descriptor_offset())); |
2155 __ ldr(R8, FieldAddress(R5, ICData::ic_data_offset())); | 2151 __ ldr(R8, FieldAddress(R5, ICData::ic_data_offset())); |
2156 __ AddImmediate(R8, R8, Array::data_offset() - kHeapObjectTag); | 2152 __ AddImmediate(R8, R8, Array::data_offset() - kHeapObjectTag); |
2157 // R8: first IC entry | 2153 // R8: first IC entry |
2158 __ LoadTaggedClassIdMayBeSmi(R1, R0); | 2154 __ LoadTaggedClassIdMayBeSmi(R1, R0); |
2159 // R1: receiver cid as Smi | 2155 // R1: receiver cid as Smi |
2160 | 2156 |
2161 __ Bind(&loop); | 2157 __ Bind(&loop); |
2162 __ ldr(R2, Address(R8, 0)); | 2158 __ ldr(R2, Address(R8, 0)); |
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2178 | 2174 |
2179 __ Bind(&miss); | 2175 __ Bind(&miss); |
2180 __ LoadIsolate(R2); | 2176 __ LoadIsolate(R2); |
2181 __ ldr(CODE_REG, Address(R2, Isolate::ic_miss_code_offset())); | 2177 __ ldr(CODE_REG, Address(R2, Isolate::ic_miss_code_offset())); |
2182 __ ldr(R1, FieldAddress(CODE_REG, Code::entry_point_offset())); | 2178 __ ldr(R1, FieldAddress(CODE_REG, Code::entry_point_offset())); |
2183 __ br(R1); | 2179 __ br(R1); |
2184 } | 2180 } |
2185 | 2181 |
2186 | 2182 |
2187 void StubCode::GenerateICCallThroughCodeStub(Assembler* assembler) { | 2183 void StubCode::GenerateICCallThroughCodeStub(Assembler* assembler) { |
2188 __ NoMonomorphicCheckedEntry(); | |
2189 | |
2190 Label loop, found, miss; | 2184 Label loop, found, miss; |
2191 __ ldr(R4, FieldAddress(R5, ICData::arguments_descriptor_offset())); | 2185 __ ldr(R4, FieldAddress(R5, ICData::arguments_descriptor_offset())); |
2192 __ ldr(R8, FieldAddress(R5, ICData::ic_data_offset())); | 2186 __ ldr(R8, FieldAddress(R5, ICData::ic_data_offset())); |
2193 __ AddImmediate(R8, R8, Array::data_offset() - kHeapObjectTag); | 2187 __ AddImmediate(R8, R8, Array::data_offset() - kHeapObjectTag); |
2194 // R8: first IC entry | 2188 // R8: first IC entry |
2195 __ LoadTaggedClassIdMayBeSmi(R1, R0); | 2189 __ LoadTaggedClassIdMayBeSmi(R1, R0); |
2196 // R1: receiver cid as Smi | 2190 // R1: receiver cid as Smi |
2197 | 2191 |
2198 __ Bind(&loop); | 2192 __ Bind(&loop); |
2199 __ ldr(R2, Address(R8, 0)); | 2193 __ ldr(R2, Address(R8, 0)); |
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2218 __ ldr(CODE_REG, Address(R2, Isolate::ic_miss_code_offset())); | 2212 __ ldr(CODE_REG, Address(R2, Isolate::ic_miss_code_offset())); |
2219 __ ldr(R1, FieldAddress(CODE_REG, Code::entry_point_offset())); | 2213 __ ldr(R1, FieldAddress(CODE_REG, Code::entry_point_offset())); |
2220 __ br(R1); | 2214 __ br(R1); |
2221 } | 2215 } |
2222 | 2216 |
2223 | 2217 |
2224 // Called from switchable IC calls. | 2218 // Called from switchable IC calls. |
2225 // R0: receiver | 2219 // R0: receiver |
2226 // R5: SingleTargetCache | 2220 // R5: SingleTargetCache |
2227 void StubCode::GenerateUnlinkedCallStub(Assembler* assembler) { | 2221 void StubCode::GenerateUnlinkedCallStub(Assembler* assembler) { |
2228 __ NoMonomorphicCheckedEntry(); | |
2229 | |
2230 __ EnterStubFrame(); | 2222 __ EnterStubFrame(); |
2231 __ Push(R0); // Preserve receiver. | 2223 __ Push(R0); // Preserve receiver. |
2232 | 2224 |
2233 __ Push(ZR); // Result slot. | 2225 __ Push(ZR); // Result slot. |
2234 __ Push(R0); // Arg0: Receiver | 2226 __ Push(R0); // Arg0: Receiver |
2235 __ Push(R5); // Arg1: UnlinkedCall | 2227 __ Push(R5); // Arg1: UnlinkedCall |
2236 __ CallRuntime(kUnlinkedCallRuntimeEntry, 2); | 2228 __ CallRuntime(kUnlinkedCallRuntimeEntry, 2); |
2237 __ Drop(2); | 2229 __ Drop(2); |
2238 __ Pop(R5); // result = IC | 2230 __ Pop(R5); // result = IC |
2239 | 2231 |
2240 __ Pop(R0); // Restore receiver. | 2232 __ Pop(R0); // Restore receiver. |
2241 __ LeaveStubFrame(); | 2233 __ LeaveStubFrame(); |
2242 | 2234 |
2243 __ ldr(CODE_REG, Address(THR, Thread::ic_lookup_through_code_stub_offset())); | 2235 __ ldr(CODE_REG, Address(THR, Thread::ic_lookup_through_code_stub_offset())); |
2244 __ ldr(R1, FieldAddress(CODE_REG, Code::checked_entry_point_offset())); | 2236 __ ldr(R1, FieldAddress(CODE_REG, Code::checked_entry_point_offset())); |
2245 __ br(R1); | 2237 __ br(R1); |
2246 } | 2238 } |
2247 | 2239 |
2248 | 2240 |
2249 // Called from switchable IC calls. | 2241 // Called from switchable IC calls. |
2250 // R0: receiver | 2242 // R0: receiver |
2251 // R5: SingleTargetCache | 2243 // R5: SingleTargetCache |
2252 // Passed to target: | 2244 // Passed to target: |
2253 // CODE_REG: target Code object | 2245 // CODE_REG: target Code object |
2254 void StubCode::GenerateSingleTargetCallStub(Assembler* assembler) { | 2246 void StubCode::GenerateSingleTargetCallStub(Assembler* assembler) { |
2255 __ NoMonomorphicCheckedEntry(); | |
2256 | |
2257 Label miss; | 2247 Label miss; |
2258 | |
2259 __ LoadClassIdMayBeSmi(R1, R0); | 2248 __ LoadClassIdMayBeSmi(R1, R0); |
2260 __ ldr(R2, FieldAddress(R5, SingleTargetCache::lower_limit_offset()), | 2249 __ ldr(R2, FieldAddress(R5, SingleTargetCache::lower_limit_offset()), |
2261 kUnsignedWord); | 2250 kUnsignedWord); |
2262 __ ldr(R3, FieldAddress(R5, SingleTargetCache::upper_limit_offset()), | 2251 __ ldr(R3, FieldAddress(R5, SingleTargetCache::upper_limit_offset()), |
2263 kUnsignedWord); | 2252 kUnsignedWord); |
2264 | 2253 |
2265 __ cmp(R1, Operand(R2)); | 2254 __ cmp(R1, Operand(R2)); |
2266 __ b(&miss, LT); | 2255 __ b(&miss, LT); |
2267 __ cmp(R1, Operand(R3)); | 2256 __ cmp(R1, Operand(R3)); |
2268 __ b(&miss, GT); | 2257 __ b(&miss, GT); |
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2312 } | 2301 } |
2313 | 2302 |
2314 | 2303 |
2315 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { | 2304 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { |
2316 __ brk(0); | 2305 __ brk(0); |
2317 } | 2306 } |
2318 | 2307 |
2319 } // namespace dart | 2308 } // namespace dart |
2320 | 2309 |
2321 #endif // defined TARGET_ARCH_ARM64 | 2310 #endif // defined TARGET_ARCH_ARM64 |
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