SBInstruction.cpp revision 334d33a19fd28cf41cba74cc61cf149e7101a603 
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.Reset (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.Reset (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.Reset (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        const Opcode &opcode = m_opaque_sp->GetOpcode();
143        const void *opcode_data = opcode.GetOpcodeBytes();
144        const uint32_t opcode_data_size = opcode.GetByteSize();
145        if (opcode_data && opcode_data_size > 0)
146        {
147            ByteOrder data_byte_order = opcode.GetDataByteOrder();
148            TargetSP target_sp (target.GetSP());
149            if (data_byte_order == eByteOrderInvalid && target_sp)
150                data_byte_order = target_sp->GetArchitecture().GetByteOrder();
151            DataBufferSP data_buffer_sp (new DataBufferHeap (opcode_data, opcode_data_size));
152            DataExtractorSP data_extractor_sp (new DataExtractor (data_buffer_sp,
153                                                                  data_byte_order,
154                                                                  target_sp ? target_sp->GetArchitecture().GetAddressByteSize() : sizeof(void*)));
155            sb_data.SetOpaque (data_extractor_sp);
156        }
157    }
158    return sb_data;
159}
160
161
162
163bool
164SBInstruction::DoesBranch ()
165{
166    if (m_opaque_sp)
167        return m_opaque_sp->DoesBranch ();
168    return false;
169}
170
171void
172SBInstruction::SetOpaque (const lldb::InstructionSP &inst_sp)
173{
174    m_opaque_sp = inst_sp;
175}
176
177bool
178SBInstruction::GetDescription (lldb::SBStream &s)
179{
180    if (m_opaque_sp)
181    {
182        // Use the "ref()" instead of the "get()" accessor in case the SBStream
183        // didn't have a stream already created, one will get created...
184        m_opaque_sp->Dump (&s.ref(), 0, true, false, NULL, false);
185        return true;
186    }
187    return false;
188}
189
190void
191SBInstruction::Print (FILE *out)
192{
193    if (out == NULL)
194        return;
195
196    if (m_opaque_sp)
197    {
198        StreamFile out_stream (out, false);
199        m_opaque_sp->Dump (&out_stream, 0, true, false, NULL, false);
200    }
201}
202
203bool
204SBInstruction::EmulateWithFrame (lldb::SBFrame &frame, uint32_t evaluate_options)
205{
206    if (m_opaque_sp)
207    {
208        lldb::StackFrameSP frame_sp (frame.GetFrameSP());
209
210        if (frame_sp)
211        {
212            lldb_private::ExecutionContext exe_ctx;
213            frame_sp->CalculateExecutionContext (exe_ctx);
214            lldb_private::Target *target = exe_ctx.GetTargetPtr();
215            lldb_private::ArchSpec arch = target->GetArchitecture();
216
217            return m_opaque_sp->Emulate (arch,
218                                         evaluate_options,
219                                         (void *) frame_sp.get(),
220                                         &lldb_private::EmulateInstruction::ReadMemoryFrame,
221                                         &lldb_private::EmulateInstruction::WriteMemoryFrame,
222                                         &lldb_private::EmulateInstruction::ReadRegisterFrame,
223                                         &lldb_private::EmulateInstruction::WriteRegisterFrame);
224        }
225    }
226    return false;
227}
228
229bool
230SBInstruction::DumpEmulation (const char *triple)
231{
232    if (m_opaque_sp && triple)
233    {
234        lldb_private::ArchSpec arch (triple, NULL);
235
236        return m_opaque_sp->DumpEmulation (arch);
237
238    }
239    return false;
240}
241
242bool
243SBInstruction::TestEmulation (lldb::SBStream &output_stream,  const char *test_file)
244{
245    if (!m_opaque_sp.get())
246        m_opaque_sp.reset (new PseudoInstruction());
247
248    return m_opaque_sp->TestEmulation (output_stream.get(), test_file);
249}
250