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108c838093
way for each TargetJITInfo subclass to allocate its own stubs. This means stubs aren't as exactly-sized anymore, but it lets us get rid of TargetJITInfo::emitFunctionStubAtAddr(), which lets ARM and PPC support the eager JIT, fixing http://llvm.org/PR4816. * Rename the JITEmitter's stub creation functions to describe the kind of stub they create. So far, all of them create lazy-compilation stubs, but they sometimes get used when far-call stubs are needed. Fixing http://llvm.org/PR5201 will involve fixing this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89715 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
//===- AlphaJITInfo.h - Alpha impl. of the JIT interface ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the Alpha implementation of the TargetJITInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef ALPHA_JITINFO_H
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#define ALPHA_JITINFO_H
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#include "llvm/Target/TargetJITInfo.h"
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#include <map>
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namespace llvm {
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class TargetMachine;
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class AlphaJITInfo : public TargetJITInfo {
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protected:
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TargetMachine &TM;
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//because gpdist are paired and relative to the pc of the first inst,
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//we need to have some state
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std::map<std::pair<void*, int>, void*> gpdistmap;
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public:
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explicit AlphaJITInfo(TargetMachine &tm) : TM(tm)
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{ useGOT = true; }
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virtual StubLayout getStubLayout();
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virtual void *emitFunctionStub(const Function* F, void *Fn,
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JITCodeEmitter &JCE);
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virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
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virtual void relocate(void *Function, MachineRelocation *MR,
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unsigned NumRelocs, unsigned char* GOTBase);
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/// replaceMachineCodeForFunction - Make it so that calling the function
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/// whose machine code is at OLD turns into a call to NEW, perhaps by
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/// overwriting OLD with a branch to NEW. This is used for self-modifying
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/// code.
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///
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virtual void replaceMachineCodeForFunction(void *Old, void *New);
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private:
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static const unsigned GOToffset = 4096;
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};
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}
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#endif
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