| 1 | //===-- ABIMacOSX_arm.h ----------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #ifndef LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H |
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| 10 | #define LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H |
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| 11 | |
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| 12 | #include "lldb/Target/ABI.h" |
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| 13 | #include "lldb/lldb-private.h" |
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| 14 | |
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| 15 | class ABIMacOSX_arm : public lldb_private::RegInfoBasedABI { |
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| 16 | public: |
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| 17 | ~ABIMacOSX_arm() override = default; |
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| 18 | |
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| 19 | size_t GetRedZoneSize() const override; |
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| 20 | |
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| 21 | bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, |
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| 22 | lldb::addr_t func_addr, lldb::addr_t returnAddress, |
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| 23 | llvm::ArrayRef<lldb::addr_t> args) const override; |
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| 24 | |
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| 25 | bool GetArgumentValues(lldb_private::Thread &thread, |
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| 26 | lldb_private::ValueList &values) const override; |
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| 27 | |
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| 28 | lldb_private::Status |
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| 29 | SetReturnValueObject(lldb::StackFrameSP &frame_sp, |
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| 30 | lldb::ValueObjectSP &new_value) override; |
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| 31 | |
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| 32 | lldb::UnwindPlanSP CreateFunctionEntryUnwindPlan() override; |
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| 33 | |
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| 34 | lldb::UnwindPlanSP CreateDefaultUnwindPlan() override; |
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| 35 | |
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| 36 | bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override; |
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| 37 | |
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| 38 | bool CallFrameAddressIsValid(lldb::addr_t cfa) override { |
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| 39 | // Make sure the stack call frame addresses are 4 byte aligned |
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| 40 | if (cfa & (4ull - 1ull)) |
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| 41 | return false; // Not 4 byte aligned |
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| 42 | if (cfa == 0) |
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| 43 | return false; // Zero is not a valid stack address |
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| 44 | return true; |
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| 45 | } |
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| 46 | |
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| 47 | bool CodeAddressIsValid(lldb::addr_t pc) override { |
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| 48 | // Just make sure the address is a valid 32 bit address. Bit zero |
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| 49 | // might be set due to Thumb function calls, so don't enforce 2 byte |
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| 50 | // alignment |
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| 51 | return pc <= UINT32_MAX; |
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| 52 | } |
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| 53 | |
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| 54 | lldb::addr_t FixCodeAddress(lldb::addr_t pc) override { |
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| 55 | // ARM uses bit zero to signify a code address is thumb, so we must |
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| 56 | // strip bit zero in any code addresses. |
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| 57 | return pc & ~(lldb::addr_t)1; |
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| 58 | } |
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| 59 | |
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| 60 | const lldb_private::RegisterInfo * |
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| 61 | GetRegisterInfoArray(uint32_t &count) override; |
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| 62 | |
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| 63 | bool IsArmv7kProcess() const; |
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| 64 | |
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| 65 | // Static Functions |
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| 66 | |
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| 67 | static void Initialize(); |
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| 68 | |
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| 69 | static void Terminate(); |
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| 70 | |
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| 71 | static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch); |
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| 72 | |
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| 73 | static llvm::StringRef GetPluginNameStatic() { return "macosx-arm" ; } |
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| 74 | |
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| 75 | // PluginInterface protocol |
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| 76 | |
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| 77 | llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); } |
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| 78 | |
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| 79 | protected: |
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| 80 | lldb::ValueObjectSP |
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| 81 | GetReturnValueObjectImpl(lldb_private::Thread &thread, |
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| 82 | lldb_private::CompilerType &ast_type) const override; |
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| 83 | |
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| 84 | private: |
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| 85 | using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead. |
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| 86 | }; |
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| 87 | |
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| 88 | #endif // LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H |
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| 89 | |
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