1//===-- ABISysV_s390x.h -----------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_SOURCE_PLUGINS_ABI_SYSTEMZ_ABISYSV_S390X_H
10#define LLDB_SOURCE_PLUGINS_ABI_SYSTEMZ_ABISYSV_S390X_H
11
12#include "lldb/Target/ABI.h"
13#include "lldb/lldb-private.h"
14
15class ABISysV_s390x : public lldb_private::RegInfoBasedABI {
16public:
17 ~ABISysV_s390x() override = default;
18
19 size_t GetRedZoneSize() const override;
20
21 bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
22 lldb::addr_t functionAddress,
23 lldb::addr_t returnAddress,
24 llvm::ArrayRef<lldb::addr_t> args) const override;
25
26 bool GetArgumentValues(lldb_private::Thread &thread,
27 lldb_private::ValueList &values) const override;
28
29 lldb_private::Status
30 SetReturnValueObject(lldb::StackFrameSP &frame_sp,
31 lldb::ValueObjectSP &new_value) override;
32
33 lldb::ValueObjectSP
34 GetReturnValueObjectImpl(lldb_private::Thread &thread,
35 lldb_private::CompilerType &type) const override;
36
37 bool
38 CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
39
40 bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
41
42 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
43
44 bool GetFallbackRegisterLocation(
45 const lldb_private::RegisterInfo *reg_info,
46 lldb_private::UnwindPlan::Row::RegisterLocation &unwind_regloc) override;
47
48 bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
49 // Make sure the stack call frame addresses are 8 byte aligned
50 if (cfa & (8ull - 1ull))
51 return false; // Not 8 byte aligned
52 if (cfa == 0)
53 return false; // Zero is not a valid stack address
54 return true;
55 }
56
57 bool CodeAddressIsValid(lldb::addr_t pc) override {
58 // Code addressed must be 2 byte aligned
59 return (pc & 1ull) == 0;
60 }
61
62 const lldb_private::RegisterInfo *
63 GetRegisterInfoArray(uint32_t &count) override;
64
65 // Static Functions
66
67 static void Initialize();
68
69 static void Terminate();
70
71 static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
72
73 static llvm::StringRef GetPluginNameStatic() { return "sysv-s390x"; }
74
75 // PluginInterface protocol
76
77 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
78
79protected:
80 void CreateRegisterMapIfNeeded();
81
82 lldb::ValueObjectSP
83 GetReturnValueObjectSimple(lldb_private::Thread &thread,
84 lldb_private::CompilerType &ast_type) const;
85
86 bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
87
88private:
89 using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead.
90};
91
92#endif // LLDB_SOURCE_PLUGINS_ABI_SYSTEMZ_ABISYSV_S390X_H
93

source code of lldb/source/Plugins/ABI/SystemZ/ABISysV_s390x.h