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 X64TargetBuilder final : public LLVMTargetBuilder { 22 public: 23 ~X64TargetBuilder() override = default; 24 GetASMBarrierCall(LLVMModule * llvmModule)25 LLVMValueRef GetASMBarrierCall(LLVMModule* llvmModule) override 26 { 27 std::string asmCall = "call *${0:c}"; // call to the first input register. 28 std::string constraints = "r,{rdi},{rsi},{rdx},{rcx}," 29 // input registerds, first is the runtime check barrier stub. 30 // others are same with the sign of runtime check barrier stub. 31 "~{r11},~{dirflag},~{fpsr},~{flags}," 32 // r11 will be used as scratch register, so mark it as clobbered, all the flag registers are also clobbered. 33 "~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7}," 34 "~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15}"; 35 // can't promise the vector registers are preserved, so mark them clobbered. 36 // NOTE: if AVX512 or more vector registers are enabled, need add them to clobber list. 37 const CallSignature* cs = RuntimeStubCSigns::Get(RuntimeStubCSigns::ID_ASMFastWriteBarrier); 38 std::vector<LLVMTypeRef> paramTys; 39 paramTys.push_back(llvmModule->GetRawPtrT()); // add the runtime check barrier stub as the first arg. 40 const size_t count = cs->GetParametersCount(); 41 const VariableType* originParamType = cs->GetParametersType(); 42 for (size_t i = 0; i < count; i++) { 43 paramTys.push_back(llvmModule->ConvertLLVMTypeFromVariableType(originParamType[i])); 44 } 45 LLVMTypeRef functype = LLVMFunctionType(llvmModule->GetVoidT(), paramTys.data(), paramTys.size(), false); 46 #if defined(PANDA_TARGET_MACOS) 47 return LLVMGetInlineAsm(functype, asmCall.data(), asmCall.size(), constraints.data(), 48 constraints.size(), true, true, LLVMInlineAsmDialectATT); 49 #else 50 return LLVMGetInlineAsm(functype, asmCall.data(), asmCall.size(), constraints.data(), 51 constraints.size(), true, true, LLVMInlineAsmDialectATT, false); 52 #endif 53 } 54 }; 55 56 class X64TargetBuilderRegistry { 57 public: X64TargetBuilderRegistry()58 X64TargetBuilderRegistry() 59 { 60 LLVMIRBuilder::RegisterTargetBuilder(TARGET_X64, []()-> LLVMTargetBuilder* { 61 return new X64TargetBuilder(); 62 }); 63 } 64 }; 65 66 X64TargetBuilderRegistry g_x64Registry; 67 } 68