| //===-- ABISysV_riscv.h -----------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef liblldb_ABISysV_riscv_h_ |
| #define liblldb_ABISysV_riscv_h_ |
| |
| // Other libraries and framework includes |
| #include "llvm/TargetParser/Triple.h" |
| |
| // Project includes |
| #include "lldb/Target/ABI.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Utility/Flags.h" |
| #include "lldb/lldb-private.h" |
| |
| class ABISysV_riscv : public lldb_private::RegInfoBasedABI { |
| public: |
| ~ABISysV_riscv() override = default; |
| |
| size_t GetRedZoneSize() const override { return 0; } |
| |
| bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, |
| lldb::addr_t functionAddress, |
| lldb::addr_t returnAddress, |
| llvm::ArrayRef<lldb::addr_t> args) const override; |
| |
| // Special thread plan for GDB style non-jit function calls. |
| bool |
| PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, |
| lldb::addr_t functionAddress, lldb::addr_t returnAddress, |
| llvm::Type &prototype, |
| llvm::ArrayRef<ABI::CallArgument> args) const override; |
| |
| bool GetArgumentValues(lldb_private::Thread &thread, |
| lldb_private::ValueList &values) const override; |
| |
| lldb_private::Status |
| SetReturnValueObject(lldb::StackFrameSP &frame_sp, |
| lldb::ValueObjectSP &new_value) override; |
| |
| lldb::ValueObjectSP |
| GetReturnValueObjectImpl(lldb_private::Thread &thread, |
| lldb_private::CompilerType &type) const override; |
| |
| // Specialized to work with llvm IR types. |
| lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread, |
| llvm::Type &type) const override; |
| |
| bool |
| CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; |
| |
| bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; |
| |
| bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override; |
| |
| bool CallFrameAddressIsValid(lldb::addr_t cfa) override { |
| // The CFA must be 128 bit aligned, unless the E ABI is used |
| lldb_private::ArchSpec arch = GetProcessSP()->GetTarget().GetArchitecture(); |
| lldb_private::Flags arch_flags = arch.GetFlags(); |
| if (arch_flags.Test(lldb_private::ArchSpec::eRISCV_rve)) |
| return (cfa & 0x3ull) == 0; |
| return (cfa & 0xfull) == 0; |
| } |
| |
| void SetIsRV64(bool is_rv64) { m_is_rv64 = is_rv64; } |
| |
| bool CodeAddressIsValid(lldb::addr_t pc) override { |
| // Calls can use the least significant bit to store auxiliary information, |
| // so no strict check is done for alignment. |
| |
| lldb_private::ArchSpec arch = GetProcessSP()->GetTarget().GetArchitecture(); |
| |
| // <addr> & 2 set is a fault if C extension is not used. |
| lldb_private::Flags arch_flags(arch.GetFlags()); |
| if (!arch_flags.Test(lldb_private::ArchSpec::eRISCV_rvc) && (pc & 2)) |
| return false; |
| |
| // Make sure 64 bit addr_t only has lower 32 bits set on riscv32 |
| llvm::Triple::ArchType machine = arch.GetMachine(); |
| if (llvm::Triple::riscv32 == machine) |
| return (pc <= UINT32_MAX); |
| |
| return true; |
| } |
| |
| const lldb_private::RegisterInfo * |
| GetRegisterInfoArray(uint32_t &count) override; |
| |
| //------------------------------------------------------------------ |
| // Static Functions |
| //------------------------------------------------------------------ |
| |
| static void Initialize(); |
| |
| static void Terminate(); |
| |
| static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, |
| const lldb_private::ArchSpec &arch); |
| |
| static llvm::StringRef GetPluginNameStatic() { return "sysv-riscv"; } |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| |
| llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); } |
| |
| protected: |
| void AugmentRegisterInfo( |
| std::vector<lldb_private::DynamicRegisterInfo::Register> ®s) override; |
| |
| bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info); |
| |
| private: |
| lldb::ValueObjectSP |
| GetReturnValueObjectSimple(lldb_private::Thread &thread, |
| lldb_private::CompilerType &ast_type) const; |
| |
| using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance |
| // instead. |
| bool m_is_rv64; // true if target is riscv64; false if target is riscv32 |
| }; |
| |
| #endif // liblldb_ABISysV_riscv_h_ |