SBInstruction.cpp revision 23b8abbe214c252028f6e09f79169529c846409d 
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::GetOpcodeName(SBTarget target)
73{
74    if (m_opaque_sp)
75    {
76        Mutex::Locker api_locker;
77        ExecutionContext exe_ctx;
78        if (target.IsValid())
79        {
80            api_locker.Reset (target->GetAPIMutex().GetMutex());
81            target->CalculateExecutionContext (exe_ctx);
82            exe_ctx.SetProcessSP(target->GetProcessSP());
83        }
84        return m_opaque_sp->GetOpcodeName(exe_ctx.GetBestExecutionContextScope());
85    }
86    return NULL;
87}
88
89const char *
90SBInstruction::GetMnemonics(SBTarget target)
91{
92    if (m_opaque_sp)
93    {
94        Mutex::Locker api_locker;
95        ExecutionContext exe_ctx;
96        if (target.IsValid())
97        {
98            api_locker.Reset (target->GetAPIMutex().GetMutex());
99            target->CalculateExecutionContext (exe_ctx);
100            exe_ctx.SetProcessSP(target->GetProcessSP());
101        }
102        return m_opaque_sp->GetMnemonics(exe_ctx.GetBestExecutionContextScope());
103    }
104    return NULL;
105}
106
107const char *
108SBInstruction::GetComment(SBTarget target)
109{
110    if (m_opaque_sp)
111    {
112        Mutex::Locker api_locker;
113        ExecutionContext exe_ctx;
114        if (target.IsValid())
115        {
116            api_locker.Reset (target->GetAPIMutex().GetMutex());
117            target->CalculateExecutionContext (exe_ctx);
118            exe_ctx.SetProcessSP(target->GetProcessSP());
119        }
120        return m_opaque_sp->GetComment(exe_ctx.GetBestExecutionContextScope());
121    }
122    return NULL;
123}
124
125size_t
126SBInstruction::GetByteSize ()
127{
128    if (m_opaque_sp)
129        return m_opaque_sp->GetOpcode().GetByteSize();
130    return 0;
131}
132
133SBData
134SBInstruction::GetData (SBTarget target)
135{
136    lldb::SBData sb_data;
137    if (m_opaque_sp)
138    {
139        const Opcode &opcode = m_opaque_sp->GetOpcode();
140        const void *opcode_data = opcode.GetOpcodeBytes();
141        const uint32_t opcode_data_size = opcode.GetByteSize();
142        if (opcode_data && opcode_data_size > 0)
143        {
144            ByteOrder data_byte_order = opcode.GetDataByteOrder();
145            if (data_byte_order == eByteOrderInvalid)
146                data_byte_order = target->GetArchitecture().GetByteOrder();
147            DataBufferSP data_buffer_sp (new DataBufferHeap (opcode_data, opcode_data_size));
148            DataExtractorSP data_extractor_sp (new DataExtractor (data_buffer_sp,
149                                                                  data_byte_order,
150                                                                  target.IsValid() ? target->GetArchitecture().GetAddressByteSize() : sizeof(void*)));
151            sb_data.SetOpaque (data_extractor_sp);
152        }
153    }
154    return sb_data;
155}
156
157
158
159bool
160SBInstruction::DoesBranch ()
161{
162    if (m_opaque_sp)
163        return m_opaque_sp->DoesBranch ();
164    return false;
165}
166
167void
168SBInstruction::SetOpaque (const lldb::InstructionSP &inst_sp)
169{
170    m_opaque_sp = inst_sp;
171}
172
173bool
174SBInstruction::GetDescription (lldb::SBStream &s)
175{
176    if (m_opaque_sp)
177    {
178        // Use the "ref()" instead of the "get()" accessor in case the SBStream
179        // didn't have a stream already created, one will get created...
180        m_opaque_sp->Dump (&s.ref(), 0, true, false, NULL, false);
181        return true;
182    }
183    return false;
184}
185
186void
187SBInstruction::Print (FILE *out)
188{
189    if (out == NULL)
190        return;
191
192    if (m_opaque_sp)
193    {
194        StreamFile out_stream (out, false);
195        m_opaque_sp->Dump (&out_stream, 0, true, false, NULL, false);
196    }
197}
198
199bool
200SBInstruction::EmulateWithFrame (lldb::SBFrame &frame, uint32_t evaluate_options)
201{
202    if (m_opaque_sp && frame.get())
203    {
204        lldb_private::ExecutionContext exe_ctx;
205        frame->CalculateExecutionContext (exe_ctx);
206        lldb_private::Target *target = exe_ctx.GetTargetPtr();
207        lldb_private::ArchSpec arch = target->GetArchitecture();
208
209        return m_opaque_sp->Emulate (arch,
210                                     evaluate_options,
211                                     (void *) frame.get(),
212                                     &lldb_private::EmulateInstruction::ReadMemoryFrame,
213                                     &lldb_private::EmulateInstruction::WriteMemoryFrame,
214                                     &lldb_private::EmulateInstruction::ReadRegisterFrame,
215                                     &lldb_private::EmulateInstruction::WriteRegisterFrame);
216    }
217    return false;
218}
219
220bool
221SBInstruction::DumpEmulation (const char *triple)
222{
223    if (m_opaque_sp && triple)
224    {
225        lldb_private::ArchSpec arch (triple, NULL);
226
227        return m_opaque_sp->DumpEmulation (arch);
228
229    }
230    return false;
231}
232
233bool
234SBInstruction::TestEmulation (lldb::SBStream &output_stream,  const char *test_file)
235{
236    if (!m_opaque_sp.get())
237        m_opaque_sp.reset (new PseudoInstruction());
238
239    return m_opaque_sp->TestEmulation (output_stream.get(), test_file);
240}
241