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RegisterContextFreeBSDKernel_x86_64.cpp
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1//===-- RegisterContextFreeBSDKernel_x86_64.cpp ---------------------------===//
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
10
11#include "lldb/Target/Process.h"
12#include "lldb/Target/Thread.h"
14#include "llvm/Support/Endian.h"
15
16using namespace lldb;
17using namespace lldb_private;
18
20 Thread &thread, RegisterInfoInterface *register_info, lldb::addr_t pcb_addr)
21 : RegisterContextPOSIX_x86(thread, 0, register_info), m_pcb_addr(pcb_addr) {
22}
23
25
27
29 assert(0);
30 return false;
31}
32
34 assert(0);
35 return false;
36}
37
39 const RegisterInfo *reg_info, RegisterValue &value) {
41 return false;
42
43 struct {
44 llvm::support::ulittle64_t r15;
45 llvm::support::ulittle64_t r14;
46 llvm::support::ulittle64_t r13;
47 llvm::support::ulittle64_t r12;
48 llvm::support::ulittle64_t rbp;
49 llvm::support::ulittle64_t rsp;
50 llvm::support::ulittle64_t rbx;
51 llvm::support::ulittle64_t rip;
52 } pcb;
53
55 size_t rd =
56 m_thread.GetProcess()->ReadMemory(m_pcb_addr, &pcb, sizeof(pcb), error);
57 if (rd != sizeof(pcb))
58 return false;
59
60 uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
61 switch (reg) {
62#define REG(x) \
63 case lldb_##x##_x86_64: \
64 value = pcb.x; \
65 break;
66
67 REG(r15);
68 REG(r14);
69 REG(r13);
70 REG(r12);
71 REG(rbp);
72 REG(rsp);
73 REG(rbx);
74 REG(rip);
75
76#undef REG
77
78 default:
79 return false;
80 }
81
82 return true;
83}
84
86 const RegisterInfo *reg_info, const RegisterValue &value) {
87 return false;
88}
static llvm::raw_ostream & error(Stream &strm)
#define REG(x)
bool WriteRegister(const lldb_private::RegisterInfo *reg_info, const lldb_private::RegisterValue &value) override
bool ReadRegister(const lldb_private::RegisterInfo *reg_info, lldb_private::RegisterValue &value) override
RegisterContextFreeBSDKernel_x86_64(lldb_private::Thread &thread, lldb_private::RegisterInfoInterface *register_info, lldb::addr_t pcb_addr)
RegisterInfo interface to patch RegisterInfo structure for archs.
An error handling class.
Definition: Status.h:44
lldb::ProcessSP GetProcess() const
Definition: Thread.h:153
#define LLDB_INVALID_ADDRESS
Definition: lldb-defines.h:74
A class that represents a running process on the host machine.
Definition: SBAddress.h:15
uint64_t addr_t
Definition: lldb-types.h:83
@ eRegisterKindLLDB
lldb's internal register numbers