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
130
131
132
133
134
135
136
137
138
| //===-- DynamicLoaderHexagonDYLD.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_DynamicLoaderHexagonDYLD_h_
#define liblldb_DynamicLoaderHexagonDYLD_h_
#include "lldb/Breakpoint/StoppointCallbackContext.h"
#include "lldb/Target/DynamicLoader.h"
#include "HexagonDYLDRendezvous.h"
class DynamicLoaderHexagonDYLD : public lldb_private::DynamicLoader {
public:
DynamicLoaderHexagonDYLD(lldb_private::Process *process);
~DynamicLoaderHexagonDYLD() override;
static void Initialize();
static void Terminate();
static lldb_private::ConstString GetPluginNameStatic();
static const char *GetPluginDescriptionStatic();
static lldb_private::DynamicLoader *
CreateInstance(lldb_private::Process *process, bool force);
// DynamicLoader protocol
void DidAttach() override;
void DidLaunch() override;
lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread,
bool stop_others) override;
lldb_private::Status CanLoadImage() override;
lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module,
const lldb::ThreadSP thread,
lldb::addr_t tls_file_addr) override;
// PluginInterface protocol
lldb_private::ConstString GetPluginName() override;
uint32_t GetPluginVersion() override;
protected:
/// Runtime linker rendezvous structure.
HexagonDYLDRendezvous m_rendezvous;
/// Virtual load address of the inferior process.
lldb::addr_t m_load_offset;
/// Virtual entry address of the inferior process.
lldb::addr_t m_entry_point;
/// Rendezvous breakpoint.
lldb::break_id_t m_dyld_bid;
/// Loaded module list. (link map for each module)
std::map<lldb::ModuleWP, lldb::addr_t, std::owner_less<lldb::ModuleWP>>
m_loaded_modules;
/// Enables a breakpoint on a function called by the runtime
/// linker each time a module is loaded or unloaded.
bool SetRendezvousBreakpoint();
/// Callback routine which updates the current list of loaded modules based
/// on the information supplied by the runtime linker.
static bool RendezvousBreakpointHit(
void *baton, lldb_private::StoppointCallbackContext *context,
lldb::user_id_t break_id, lldb::user_id_t break_loc_id);
/// Helper method for RendezvousBreakpointHit. Updates LLDB's current set
/// of loaded modules.
void RefreshModules();
/// Updates the load address of every allocatable section in \p module.
///
/// \param module The module to traverse.
///
/// \param link_map_addr The virtual address of the link map for the @p
/// module.
///
/// \param base_addr The virtual base address \p module is loaded at.
void UpdateLoadedSections(lldb::ModuleSP module, lldb::addr_t link_map_addr,
lldb::addr_t base_addr,
bool base_addr_is_offset) override;
/// Removes the loaded sections from the target in \p module.
///
/// \param module The module to traverse.
void UnloadSections(const lldb::ModuleSP module) override;
/// Callback routine invoked when we hit the breakpoint on process entry.
///
/// This routine is responsible for resolving the load addresses of all
/// dependent modules required by the inferior and setting up the rendezvous
/// breakpoint.
static bool
EntryBreakpointHit(void *baton,
lldb_private::StoppointCallbackContext *context,
lldb::user_id_t break_id, lldb::user_id_t break_loc_id);
/// Helper for the entry breakpoint callback. Resolves the load addresses
/// of all dependent modules.
void LoadAllCurrentModules();
/// Computes a value for m_load_offset returning the computed address on
/// success and LLDB_INVALID_ADDRESS on failure.
lldb::addr_t ComputeLoadOffset();
/// Computes a value for m_entry_point returning the computed address on
/// success and LLDB_INVALID_ADDRESS on failure.
lldb::addr_t GetEntryPoint();
/// Checks to see if the target module has changed, updates the target
/// accordingly and returns the target executable module.
lldb::ModuleSP GetTargetExecutable();
/// return the address of the Rendezvous breakpoint
lldb::addr_t FindRendezvousBreakpointAddress();
private:
const lldb_private::SectionList *
GetSectionListFromModule(const lldb::ModuleSP module) const;
DISALLOW_COPY_AND_ASSIGN(DynamicLoaderHexagonDYLD);
};
#endif // liblldb_DynamicLoaderHexagonDYLD_h_
|