1 //===-- llvm/CodeGen/BinaryObject.h - Binary Object. -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines a Binary Object Aka. "blob" for holding data from code
11 // generators, ready for data to the object module code writters.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_CODEGEN_BINARYOBJECT_H
16 #define LLVM_CODEGEN_BINARYOBJECT_H
23 class MachineRelocation;
24 typedef std::vector<uint8_t> BinaryData;
32 std::vector<MachineRelocation> Relocations;
35 /// Constructors and destructor
38 BinaryObject(bool isLittleEndian, bool is64Bit)
39 : IsLittleEndian(isLittleEndian), Is64Bit(is64Bit) {}
41 BinaryObject(const std::string &name, bool isLittleEndian, bool is64Bit)
42 : Name(name), IsLittleEndian(isLittleEndian), Is64Bit(is64Bit) {}
46 /// getName - get name of BinaryObject
47 inline std::string getName() const { return Name; }
49 /// get size of binary data
55 BinaryData& getData() {
59 /// get machine relocations
60 const std::vector<MachineRelocation>& getRelocations() const {
64 /// emitByte - This callback is invoked when a byte needs to be
65 /// written to the data stream.
66 inline void emitByte(uint8_t B) {
70 /// emitWord16 - This callback is invoked when a 16-bit word needs to be
71 /// written to the data stream in correct endian format and correct size.
72 inline void emitWord16(uint16_t W) {
79 /// emitWord16LE - This callback is invoked when a 16-bit word needs to be
80 /// written to the data stream in correct endian format and correct size.
81 inline void emitWord16LE(uint16_t W) {
82 Data.push_back((W >> 0) & 255);
83 Data.push_back((W >> 8) & 255);
86 /// emitWord16BE - This callback is invoked when a 16-bit word needs to be
87 /// written to the data stream in correct endian format and correct size.
88 inline void emitWord16BE(uint16_t W) {
89 Data.push_back((W >> 8) & 255);
90 Data.push_back((W >> 0) & 255);
93 /// emitWord - This callback is invoked when a word needs to be
94 /// written to the data stream in correct endian format and correct size.
95 inline void emitWord(uint64_t W) {
102 /// emitWord32 - This callback is invoked when a 32-bit word needs to be
103 /// written to the data stream in correct endian format.
104 inline void emitWord32(uint32_t W) {
111 /// emitWord64 - This callback is invoked when a 32-bit word needs to be
112 /// written to the data stream in correct endian format.
113 inline void emitWord64(uint64_t W) {
120 /// emitWordLE - This callback is invoked when a 32-bit word needs to be
121 /// written to the data stream in little-endian format.
122 inline void emitWordLE(uint32_t W) {
123 Data.push_back((W >> 0) & 255);
124 Data.push_back((W >> 8) & 255);
125 Data.push_back((W >> 16) & 255);
126 Data.push_back((W >> 24) & 255);
129 /// emitWordBE - This callback is invoked when a 32-bit word needs to be
130 /// written to the data stream in big-endian format.
132 inline void emitWordBE(uint32_t W) {
133 Data.push_back((W >> 24) & 255);
134 Data.push_back((W >> 16) & 255);
135 Data.push_back((W >> 8) & 255);
136 Data.push_back((W >> 0) & 255);
139 /// emitDWordLE - This callback is invoked when a 64-bit word needs to be
140 /// written to the data stream in little-endian format.
141 inline void emitDWordLE(uint64_t W) {
142 Data.push_back(unsigned(W >> 0) & 255);
143 Data.push_back(unsigned(W >> 8) & 255);
144 Data.push_back(unsigned(W >> 16) & 255);
145 Data.push_back(unsigned(W >> 24) & 255);
146 Data.push_back(unsigned(W >> 32) & 255);
147 Data.push_back(unsigned(W >> 40) & 255);
148 Data.push_back(unsigned(W >> 48) & 255);
149 Data.push_back(unsigned(W >> 56) & 255);
152 /// emitDWordBE - This callback is invoked when a 64-bit word needs to be
153 /// written to the data stream in big-endian format.
154 inline void emitDWordBE(uint64_t W) {
155 Data.push_back(unsigned(W >> 56) & 255);
156 Data.push_back(unsigned(W >> 48) & 255);
157 Data.push_back(unsigned(W >> 40) & 255);
158 Data.push_back(unsigned(W >> 32) & 255);
159 Data.push_back(unsigned(W >> 24) & 255);
160 Data.push_back(unsigned(W >> 16) & 255);
161 Data.push_back(unsigned(W >> 8) & 255);
162 Data.push_back(unsigned(W >> 0) & 255);
165 /// fixByte - This callback is invoked when a byte needs to be
166 /// fixup the buffer.
167 inline void fixByte(uint8_t B, uint32_t offset) {
171 /// fixWord16 - This callback is invoked when a 16-bit word needs to
172 /// fixup the data stream in correct endian format.
173 inline void fixWord16(uint16_t W, uint32_t offset) {
175 fixWord16LE(W, offset);
177 fixWord16BE(W, offset);
180 /// emitWord16LE - This callback is invoked when a 16-bit word needs to
181 /// fixup the data stream in little endian format.
182 inline void fixWord16LE(uint16_t W, uint32_t offset) {
183 Data[offset++] = W & 255;
184 Data[offset] = (W >> 8) & 255;
187 /// fixWord16BE - This callback is invoked when a 16-bit word needs to
188 /// fixup data stream in big endian format.
189 inline void fixWord16BE(uint16_t W, uint32_t offset) {
190 Data[offset++] = (W >> 8) & 255;
191 Data[offset] = W & 255;
194 /// emitWord - This callback is invoked when a word needs to
195 /// fixup the data in correct endian format and correct size.
196 inline void fixWord(uint64_t W, uint32_t offset) {
198 fixWord32(W, offset);
200 fixWord64(W, offset);
203 /// fixWord32 - This callback is invoked when a 32-bit word needs to
204 /// fixup the data in correct endian format.
205 inline void fixWord32(uint32_t W, uint32_t offset) {
207 fixWord32LE(W, offset);
209 fixWord32BE(W, offset);
212 /// fixWord32LE - This callback is invoked when a 32-bit word needs to
213 /// fixup the data in little endian format.
214 inline void fixWord32LE(uint32_t W, uint32_t offset) {
215 Data[offset++] = W & 255;
216 Data[offset++] = (W >> 8) & 255;
217 Data[offset++] = (W >> 16) & 255;
218 Data[offset] = (W >> 24) & 255;
221 /// fixWord32BE - This callback is invoked when a 32-bit word needs to
222 /// fixup the data in big endian format.
223 inline void fixWord32BE(uint32_t W, uint32_t offset) {
224 Data[offset++] = (W >> 24) & 255;
225 Data[offset++] = (W >> 16) & 255;
226 Data[offset++] = (W >> 8) & 255;
227 Data[offset] = W & 255;
230 /// fixWord64 - This callback is invoked when a 64-bit word needs to
231 /// fixup the data in correct endian format.
232 inline void fixWord64(uint64_t W, uint32_t offset) {
234 fixWord64LE(W, offset);
236 fixWord64BE(W, offset);
239 /// fixWord64BE - This callback is invoked when a 64-bit word needs to
240 /// fixup the data in little endian format.
241 inline void fixWord64LE(uint64_t W, uint32_t offset) {
242 Data[offset++] = W & 255;
243 Data[offset++] = (W >> 8) & 255;
244 Data[offset++] = (W >> 16) & 255;
245 Data[offset++] = (W >> 24) & 255;
246 Data[offset++] = (W >> 32) & 255;
247 Data[offset++] = (W >> 40) & 255;
248 Data[offset++] = (W >> 48) & 255;
249 Data[offset] = (W >> 56) & 255;
252 /// fixWord64BE - This callback is invoked when a 64-bit word needs to
253 /// fixup the data in big endian format.
254 inline void fixWord64BE(uint64_t W, uint32_t offset) {
255 Data[offset++] = (W >> 56) & 255;
256 Data[offset++] = (W >> 48) & 255;
257 Data[offset++] = (W >> 40) & 255;
258 Data[offset++] = (W >> 32) & 255;
259 Data[offset++] = (W >> 24) & 255;
260 Data[offset++] = (W >> 16) & 255;
261 Data[offset++] = (W >> 8) & 255;
262 Data[offset] = W & 255;
265 /// emitAlignment - Pad the data to the specified alignment.
266 void emitAlignment(unsigned Alignment) {
267 if (Alignment <= 1) return;
268 unsigned PadSize = -Data.size() & (Alignment-1);
269 for (unsigned i = 0; i<PadSize; ++i)
273 /// emitULEB128Bytes - This callback is invoked when a ULEB128 needs to be
274 /// written to the data stream.
275 void emitULEB128Bytes(uint64_t Value) {
277 unsigned char Byte = Value & 0x7f;
279 if (Value) Byte |= 0x80;
284 /// emitSLEB128Bytes - This callback is invoked when a SLEB128 needs to be
285 /// written to the data stream.
286 void emitSLEB128Bytes(int64_t Value) {
287 int Sign = Value >> (8 * sizeof(Value) - 1);
291 unsigned char Byte = Value & 0x7f;
293 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
294 if (IsMore) Byte |= 0x80;
299 /// emitString - This callback is invoked when a String needs to be
300 /// written to the data stream.
301 void emitString(const std::string &String) {
302 for (unsigned i = 0, N = static_cast<unsigned>(String.size()); i<N; ++i) {
303 unsigned char C = String[i];
309 /// getCurrentPCOffset - Return the offset from the start of the emitted
310 /// buffer that we are currently writing to.
311 uintptr_t getCurrentPCOffset() const {
315 /// addRelocation - Whenever a relocatable address is needed, it should be
316 /// noted with this interface.
317 void addRelocation(const MachineRelocation& relocation) {
318 Relocations.push_back(relocation);
322 } // end namespace llvm