1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include "ecmascript/compiler/codegen/llvm/llvm_ir_builder.h" 17 18 19 namespace panda::ecmascript::kungfu { 20 21 class Aarch64TargetBuilder final : public LLVMTargetBuilder { 22 public: 23 ~Aarch64TargetBuilder() override = default; 24 GetASMBarrierCall(LLVMModule * llvmModule)25 LLVMValueRef GetASMBarrierCall(LLVMModule* llvmModule) override 26 { 27 std::string asmCall = "blr $0"; // call to the first input register. 28 std::string constraints = "r,{x0},{x1},{x2},{x3}," 29 // input registerds, first is the runtime check barrier stub. 30 // others are same with the sign of runtime check barrier stub. 31 "~{x15},~{nzcv},~{fpsr},~{x30}" 32 // x15 will be used as scratch register, so mark it as clobbered, all the flag registers are also clobbered. 33 // lr will be early clobbered at call. 34 "~{v0},~{v1},~{v2},~{v3},~{v4},~{v5},~{v6},~{v7},~{v8},~{v9},~{v10},~{v11},~{v12},~{v13},~{v14},~{v15}," 35 "~{v16},~{v17},~{v18},~{v19},~{v20},~{v21},~{v22},~{v23},~{v24},~{v25},~{v26},~{v27},~{v28},~{v29},~{v30}," 36 "~{v31}," 37 "~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15}," 38 "~{q16},~{q17},~{q18},~{q19},~{q20},~{q21},~{q22},~{q23},~{q24},~{q25},~{q26},~{q27},~{q28},~{q29},~{q30}," 39 "~{q31}"; 40 const CallSignature* cs = RuntimeStubCSigns::Get(RuntimeStubCSigns::ID_ASMFastWriteBarrier); 41 std::vector<LLVMTypeRef> paramTys; 42 paramTys.push_back(llvmModule->GetRawPtrT()); // add the runtime check barrier stub as the first arg. 43 const size_t count = cs->GetParametersCount(); 44 const VariableType* originParamType = cs->GetParametersType(); 45 for (size_t i = 0; i < count; i++) { 46 paramTys.push_back(llvmModule->ConvertLLVMTypeFromVariableType(originParamType[i])); 47 } 48 LLVMTypeRef functype = LLVMFunctionType(llvmModule->GetVoidT(), paramTys.data(), paramTys.size(), false); 49 #if defined(PANDA_TARGET_MACOS) 50 return LLVMGetInlineAsm(functype, asmCall.data(), asmCall.size(), constraints.data(), 51 constraints.size(), true, true, LLVMInlineAsmDialectATT); 52 #else 53 return LLVMGetInlineAsm(functype, asmCall.data(), asmCall.size(), constraints.data(), 54 constraints.size(), true, true, LLVMInlineAsmDialectATT, false); 55 #endif 56 } 57 }; 58 59 class Aarch64TargetBuilderRegistry { 60 public: Aarch64TargetBuilderRegistry()61 Aarch64TargetBuilderRegistry() 62 { 63 LLVMIRBuilder::RegisterTargetBuilder(TARGET_AARCH64, []()-> LLVMTargetBuilder* { 64 return new Aarch64TargetBuilder(); 65 }); 66 } 67 }; 68 69 Aarch64TargetBuilderRegistry g_aarch64Registry; 70 } 71