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
|
//===-- NativeRegisterContextLinux.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 lldb_NativeRegisterContextLinux_h
#define lldb_NativeRegisterContextLinux_h
#include "Plugins/Process/Utility/NativeRegisterContextRegisterInfo.h"
#include "lldb/Host/common/NativeThreadProtocol.h"
namespace lldb_private {
namespace process_linux {
class NativeRegisterContextLinux
: public virtual NativeRegisterContextRegisterInfo {
public:
// This function is implemented in the NativeRegisterContextLinux_* subclasses
// to create a new instance of the host specific NativeRegisterContextLinux.
// The implementations can't collide as only one NativeRegisterContextLinux_*
// variant should be compiled into the final executable.
static std::unique_ptr<NativeRegisterContextLinux>
CreateHostNativeRegisterContextLinux(const ArchSpec &target_arch,
NativeThreadProtocol &native_thread);
// Invalidates cached values in register context data structures
virtual void InvalidateAllRegisters(){}
struct SyscallData {
/// The syscall instruction. If the architecture uses software
/// single-stepping, the instruction should also be followed by a trap to
/// ensure the process is stopped after the syscall.
llvm::ArrayRef<uint8_t> Insn;
/// Registers used for syscall arguments. The first register is used to
/// store the syscall number.
llvm::ArrayRef<uint32_t> Args;
uint32_t Result; ///< Register containing the syscall result.
};
/// Return architecture-specific data needed to make inferior syscalls, if
/// they are supported.
virtual llvm::Optional<SyscallData> GetSyscallData() { return llvm::None; }
struct MmapData {
// Syscall numbers can be found (e.g.) in /usr/include/asm/unistd.h for the
// relevant architecture.
unsigned SysMmap; ///< mmap syscall number.
unsigned SysMunmap; ///< munmap syscall number
};
/// Return the architecture-specific data needed to make mmap syscalls, if
/// they are supported.
virtual llvm::Optional<MmapData> GetMmapData() { return llvm::None; }
protected:
lldb::ByteOrder GetByteOrder() const;
virtual Status ReadRegisterRaw(uint32_t reg_index, RegisterValue ®_value);
virtual Status WriteRegisterRaw(uint32_t reg_index,
const RegisterValue ®_value);
virtual Status ReadRegisterSet(void *buf, size_t buf_size,
unsigned int regset);
virtual Status WriteRegisterSet(void *buf, size_t buf_size,
unsigned int regset);
virtual Status ReadGPR();
virtual Status WriteGPR();
virtual Status ReadFPR();
virtual Status WriteFPR();
virtual void *GetGPRBuffer() = 0;
virtual size_t GetGPRSize() const {
return GetRegisterInfoInterface().GetGPRSize();
}
virtual void *GetFPRBuffer() = 0;
virtual size_t GetFPRSize() = 0;
virtual uint32_t GetPtraceOffset(uint32_t reg_index) {
return GetRegisterInfoAtIndex(reg_index)->byte_offset;
}
// The Do*** functions are executed on the privileged thread and can perform
// ptrace
// operations directly.
virtual Status DoReadRegisterValue(uint32_t offset, const char *reg_name,
uint32_t size, RegisterValue &value);
virtual Status DoWriteRegisterValue(uint32_t offset, const char *reg_name,
const RegisterValue &value);
};
} // namespace process_linux
} // namespace lldb_private
#endif // #ifndef lldb_NativeRegisterContextLinux_h
|
GitWeb