SBInstruction.cpp revision 7fb143064009e34dbb7a602924e9807375f72a46 
1//===-- SBInstruction.cpp ---------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "lldb/API/SBInstruction.h"
11
12#include "lldb/API/SBAddress.h"
13#include "lldb/API/SBFrame.h"
14#include "lldb/API/SBInstruction.h"
15#include "lldb/API/SBStream.h"
16#include "lldb/API/SBTarget.h"
17
18#include "lldb/Core/ArchSpec.h"
19#include "lldb/Core/DataBufferHeap.h"
20#include "lldb/Core/Disassembler.h"
21#include "lldb/Core/EmulateInstruction.h"
22#include "lldb/Core/StreamFile.h"
23#include "lldb/Target/ExecutionContext.h"
24#include "lldb/Target/StackFrame.h"
25#include "lldb/Target/Target.h"
26
27using namespace lldb;
28using namespace lldb_private;
29
30SBInstruction::SBInstruction ()
31{
32}
33
34SBInstruction::SBInstruction (const lldb::InstructionSP& inst_sp) :
35    m_opaque_sp (inst_sp)
36{
37}
38
39SBInstruction::SBInstruction(const SBInstruction &rhs) :
40    m_opaque_sp (rhs.m_opaque_sp)
41{
42}
43
44const SBInstruction &
45SBInstruction::operator = (const SBInstruction &rhs)
46{
47    if (this != &rhs)
48        m_opaque_sp = rhs.m_opaque_sp;
49    return *this;
50}
51
52SBInstruction::~SBInstruction ()
53{
54}
55
56bool
57SBInstruction::IsValid()
58{
59    return (m_opaque_sp.get() != NULL);
60}
61
62SBAddress
63SBInstruction::GetAddress()
64{
65    SBAddress sb_addr;
66    if (m_opaque_sp && m_opaque_sp->GetAddress().IsValid())
67        sb_addr.SetAddress(&m_opaque_sp->GetAddress());
68    return sb_addr;
69}
70
71const char *
72SBInstruction::GetMnemonic(SBTarget target)
73{
74    if (m_opaque_sp)
75    {
76        Mutex::Locker api_locker;
77        ExecutionContext exe_ctx;
78        TargetSP target_sp (target.GetSP());
79        if (target_sp)
80        {
81            api_locker.Lock (target_sp->GetAPIMutex().GetMutex());
82            target_sp->CalculateExecutionContext (exe_ctx);
83            exe_ctx.SetProcessSP(target_sp->GetProcessSP());
84        }
85        return m_opaque_sp->GetMnemonic(exe_ctx.GetBestExecutionContextScope());
86    }
87    return NULL;
88}
89
90const char *
91SBInstruction::GetOperands(SBTarget target)
92{
93    if (m_opaque_sp)
94    {
95        Mutex::Locker api_locker;
96        ExecutionContext exe_ctx;
97        TargetSP target_sp (target.GetSP());
98        if (target_sp)
99        {
100            api_locker.Lock (target_sp->GetAPIMutex().GetMutex());
101            target_sp->CalculateExecutionContext (exe_ctx);
102            exe_ctx.SetProcessSP(target_sp->GetProcessSP());
103        }
104        return m_opaque_sp->GetOperands(exe_ctx.GetBestExecutionContextScope());
105    }
106    return NULL;
107}
108
109const char *
110SBInstruction::GetComment(SBTarget target)
111{
112    if (m_opaque_sp)
113    {
114        Mutex::Locker api_locker;
115        ExecutionContext exe_ctx;
116        TargetSP target_sp (target.GetSP());
117        if (target_sp)
118        {
119            api_locker.Lock (target_sp->GetAPIMutex().GetMutex());
120            target_sp->CalculateExecutionContext (exe_ctx);
121            exe_ctx.SetProcessSP(target_sp->GetProcessSP());
122        }
123        return m_opaque_sp->GetComment(exe_ctx.GetBestExecutionContextScope());
124    }
125    return NULL;
126}
127
128size_t
129SBInstruction::GetByteSize ()
130{
131    if (m_opaque_sp)
132        return m_opaque_sp->GetOpcode().GetByteSize();
133    return 0;
134}
135
136SBData
137SBInstruction::GetData (SBTarget target)
138{
139    lldb::SBData sb_data;
140    if (m_opaque_sp)
141    {
142        DataExtractorSP data_extractor_sp (new DataExtractor());
143        if (m_opaque_sp->GetOpcode().GetData (*data_extractor_sp))
144        {
145            sb_data.SetOpaque (data_extractor_sp);
146        }
147    }
148    return sb_data;
149}
150
151
152
153bool
154SBInstruction::DoesBranch ()
155{
156    if (m_opaque_sp)
157        return m_opaque_sp->DoesBranch ();
158    return false;
159}
160
161void
162SBInstruction::SetOpaque (const lldb::InstructionSP &inst_sp)
163{
164    m_opaque_sp = inst_sp;
165}
166
167bool
168SBInstruction::GetDescription (lldb::SBStream &s)
169{
170    if (m_opaque_sp)
171    {
172        // Use the "ref()" instead of the "get()" accessor in case the SBStream
173        // didn't have a stream already created, one will get created...
174        m_opaque_sp->Dump (&s.ref(), 0, true, false, NULL, false);
175        return true;
176    }
177    return false;
178}
179
180void
181SBInstruction::Print (FILE *out)
182{
183    if (out == NULL)
184        return;
185
186    if (m_opaque_sp)
187    {
188        StreamFile out_stream (out, false);
189        m_opaque_sp->Dump (&out_stream, 0, true, false, NULL, false);
190    }
191}
192
193bool
194SBInstruction::EmulateWithFrame (lldb::SBFrame &frame, uint32_t evaluate_options)
195{
196    if (m_opaque_sp)
197    {
198        lldb::StackFrameSP frame_sp (frame.GetFrameSP());
199
200        if (frame_sp)
201        {
202            lldb_private::ExecutionContext exe_ctx;
203            frame_sp->CalculateExecutionContext (exe_ctx);
204            lldb_private::Target *target = exe_ctx.GetTargetPtr();
205            lldb_private::ArchSpec arch = target->GetArchitecture();
206
207            return m_opaque_sp->Emulate (arch,
208                                         evaluate_options,
209                                         (void *) frame_sp.get(),
210                                         &lldb_private::EmulateInstruction::ReadMemoryFrame,
211                                         &lldb_private::EmulateInstruction::WriteMemoryFrame,
212                                         &lldb_private::EmulateInstruction::ReadRegisterFrame,
213                                         &lldb_private::EmulateInstruction::WriteRegisterFrame);
214        }
215    }
216    return false;
217}
218
219bool
220SBInstruction::DumpEmulation (const char *triple)
221{
222    if (m_opaque_sp && triple)
223    {
224        lldb_private::ArchSpec arch (triple, NULL);
225
226        return m_opaque_sp->DumpEmulation (arch);
227
228    }
229    return false;
230}
231
232bool
233SBInstruction::TestEmulation (lldb::SBStream &output_stream,  const char *test_file)
234{
235    if (!m_opaque_sp.get())
236        m_opaque_sp.reset (new PseudoInstruction());
237
238    return m_opaque_sp->TestEmulation (output_stream.get(), test_file);
239}
240
241lldb::AddressClass
242SBInstruction::GetAddressClass ()
243{
244    if (m_opaque_sp.get())
245        return m_opaque_sp->GetAddressClass();
246    return eAddressClassInvalid;
247}
248