1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
//===-- 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_
|
