1 //===-- lib/CodeGen/ELFCodeEmitter.h ----------------------------*- 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 #ifndef ELFCODEEMITTER_H
11 #define ELFCODEEMITTER_H
13 #include "llvm/CodeGen/ObjectCodeEmitter.h"
20 /// ELFCodeEmitter - This class is used by the ELFWriter to
21 /// emit the code for functions to the ELF file.
22 class ELFCodeEmitter : public ObjectCodeEmitter {
25 /// Target machine description
28 /// Section containing code for functions
31 /// Relocations - Record relocations needed by the current function
32 std::vector<MachineRelocation> Relocations;
34 /// JTRelocations - Record relocations needed by the relocation
36 std::vector<MachineRelocation> JTRelocations;
38 /// FnStartPtr - Function offset from the beginning of ELFSection 'ES'
41 explicit ELFCodeEmitter(ELFWriter &ew) : EW(ew), TM(EW.TM) {}
43 /// addRelocation - Register new relocations for this function
44 void addRelocation(const MachineRelocation &MR) {
45 Relocations.push_back(MR);
48 /// emitConstantPool - For each constant pool entry, figure out which
49 /// section the constant should live in and emit data to it
50 void emitConstantPool(MachineConstantPool *MCP);
52 /// emitJumpTables - Emit all the jump tables for a given jump table
53 /// info and record them to the appropriate section.
54 void emitJumpTables(MachineJumpTableInfo *MJTI);
56 void startFunction(MachineFunction &F);
57 bool finishFunction(MachineFunction &F);
59 /// emitLabel - Emits a label
60 virtual void emitLabel(MCSymbol *Label) {
61 assert("emitLabel not implemented");
64 /// getLabelAddress - Return the address of the specified LabelID,
65 /// only usable after the LabelID has been emitted.
66 virtual uintptr_t getLabelAddress(MCSymbol *Label) const {
67 assert("getLabelAddress not implemented");
71 virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) {}
73 }; // end class ELFCodeEmitter
75 } // end namespace llvm