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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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2260 stub->CompilingCallsToThisStubIsGCSafe(isolate())); | 2260 stub->CompilingCallsToThisStubIsGCSafe(isolate())); |
2261 Jump(stub->GetCode(isolate()), RelocInfo::CODE_TARGET, cond); | 2261 Jump(stub->GetCode(isolate()), RelocInfo::CODE_TARGET, cond); |
2262 } | 2262 } |
2263 | 2263 |
2264 | 2264 |
2265 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { | 2265 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { |
2266 return ref0.address() - ref1.address(); | 2266 return ref0.address() - ref1.address(); |
2267 } | 2267 } |
2268 | 2268 |
2269 | 2269 |
2270 void MacroAssembler::CallApiFunctionAndReturn(ExternalReference function, | 2270 void MacroAssembler::CallApiFunctionAndReturn( |
2271 int stack_space) { | 2271 void* function_address, |
| 2272 ExternalReference::Type function_type, |
| 2273 int stack_space, |
| 2274 int return_value_operand, |
| 2275 int return_value_offset) { |
2272 ExternalReference next_address = | 2276 ExternalReference next_address = |
2273 ExternalReference::handle_scope_next_address(isolate()); | 2277 ExternalReference::handle_scope_next_address(isolate()); |
2274 const int kNextOffset = 0; | 2278 const int kNextOffset = 0; |
2275 const int kLimitOffset = AddressOffset( | 2279 const int kLimitOffset = AddressOffset( |
2276 ExternalReference::handle_scope_limit_address(isolate()), | 2280 ExternalReference::handle_scope_limit_address(isolate()), |
2277 next_address); | 2281 next_address); |
2278 const int kLevelOffset = AddressOffset( | 2282 const int kLevelOffset = AddressOffset( |
2279 ExternalReference::handle_scope_level_address(isolate()), | 2283 ExternalReference::handle_scope_level_address(isolate()), |
2280 next_address); | 2284 next_address); |
2281 | 2285 |
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2293 PrepareCallCFunction(1, r0); | 2297 PrepareCallCFunction(1, r0); |
2294 mov(r0, Operand(ExternalReference::isolate_address(isolate()))); | 2298 mov(r0, Operand(ExternalReference::isolate_address(isolate()))); |
2295 CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1); | 2299 CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1); |
2296 PopSafepointRegisters(); | 2300 PopSafepointRegisters(); |
2297 } | 2301 } |
2298 | 2302 |
2299 // Native call returns to the DirectCEntry stub which redirects to the | 2303 // Native call returns to the DirectCEntry stub which redirects to the |
2300 // return address pushed on stack (could have moved after GC). | 2304 // return address pushed on stack (could have moved after GC). |
2301 // DirectCEntry stub itself is generated early and never moves. | 2305 // DirectCEntry stub itself is generated early and never moves. |
2302 DirectCEntryStub stub; | 2306 DirectCEntryStub stub; |
2303 stub.GenerateCall(this, function); | 2307 { |
| 2308 Address address = |
| 2309 v8::ToCData<Address>(reinterpret_cast<Object*>(function_address)); |
| 2310 ApiFunction fun(address); |
| 2311 ExternalReference ref(&fun, function_type, isolate()); |
| 2312 stub.GenerateCall(this, ref); |
| 2313 } |
2304 | 2314 |
2305 if (FLAG_log_timer_events) { | 2315 if (FLAG_log_timer_events) { |
2306 FrameScope frame(this, StackFrame::MANUAL); | 2316 FrameScope frame(this, StackFrame::MANUAL); |
2307 PushSafepointRegisters(); | 2317 PushSafepointRegisters(); |
2308 PrepareCallCFunction(1, r0); | 2318 PrepareCallCFunction(1, r0); |
2309 mov(r0, Operand(ExternalReference::isolate_address(isolate()))); | 2319 mov(r0, Operand(ExternalReference::isolate_address(isolate()))); |
2310 CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1); | 2320 CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1); |
2311 PopSafepointRegisters(); | 2321 PopSafepointRegisters(); |
2312 } | 2322 } |
2313 | 2323 |
2314 Label promote_scheduled_exception; | 2324 Label promote_scheduled_exception; |
2315 Label delete_allocated_handles; | 2325 Label delete_allocated_handles; |
2316 Label leave_exit_frame; | 2326 Label leave_exit_frame; |
| 2327 Label return_value_loaded; |
2317 | 2328 |
2318 // If result is non-zero, dereference to get the result value | 2329 if (!CallbackTable::ReturnsVoid(isolate(), function_address)) { |
2319 // otherwise set it to undefined. | 2330 Label load_return_value; |
2320 cmp(r0, Operand::Zero()); | 2331 cmp(r0, Operand::Zero()); |
2321 LoadRoot(r0, Heap::kUndefinedValueRootIndex, eq); | 2332 b(eq, &load_return_value); |
2322 ldr(r0, MemOperand(r0), ne); | 2333 // derefernce returned value |
2323 | 2334 ldr(r0, MemOperand(r0)); |
| 2335 b(&return_value_loaded); |
| 2336 bind(&load_return_value); |
| 2337 } |
| 2338 // load value from ReturnValue |
| 2339 ldr(r0, MemOperand(sp, return_value_operand*kPointerSize)); |
| 2340 ldr(r0, MemOperand(r0, return_value_offset*kPointerSize)); |
| 2341 bind(&return_value_loaded); |
2324 // No more valid handles (the result handle was the last one). Restore | 2342 // No more valid handles (the result handle was the last one). Restore |
2325 // previous handle scope. | 2343 // previous handle scope. |
2326 str(r4, MemOperand(r7, kNextOffset)); | 2344 str(r4, MemOperand(r7, kNextOffset)); |
2327 if (emit_debug_code()) { | 2345 if (emit_debug_code()) { |
2328 ldr(r1, MemOperand(r7, kLevelOffset)); | 2346 ldr(r1, MemOperand(r7, kLevelOffset)); |
2329 cmp(r1, r6); | 2347 cmp(r1, r6); |
2330 Check(eq, "Unexpected level after return from api call"); | 2348 Check(eq, "Unexpected level after return from api call"); |
2331 } | 2349 } |
2332 sub(r6, r6, Operand(1)); | 2350 sub(r6, r6, Operand(1)); |
2333 str(r6, MemOperand(r7, kLevelOffset)); | 2351 str(r6, MemOperand(r7, kLevelOffset)); |
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3858 void CodePatcher::EmitCondition(Condition cond) { | 3876 void CodePatcher::EmitCondition(Condition cond) { |
3859 Instr instr = Assembler::instr_at(masm_.pc_); | 3877 Instr instr = Assembler::instr_at(masm_.pc_); |
3860 instr = (instr & ~kCondMask) | cond; | 3878 instr = (instr & ~kCondMask) | cond; |
3861 masm_.emit(instr); | 3879 masm_.emit(instr); |
3862 } | 3880 } |
3863 | 3881 |
3864 | 3882 |
3865 } } // namespace v8::internal | 3883 } } // namespace v8::internal |
3866 | 3884 |
3867 #endif // V8_TARGET_ARCH_ARM | 3885 #endif // V8_TARGET_ARCH_ARM |
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