search for: startfunctionstub

On Fri, 12 May 2006, Ralph Corderoy wrote: >> If you don't *know* that all (e.g.) function pointers to this code are >> dead (which means that execution could come back to the function), you >> should use the ExecutionEngine::recompileAndRelinkFunction(F) method. > > recompileAndRelinkFunction() overwrites the old machine code with a > branch to the new. Is it

...its 16 bytes. AtI[0] = BUILD_LIS(12, Addr >> 16); // lis r12, hi16(address) AtI[1] = BUILD_ORI(12, 12, Addr); // ori r12, r12, low16(address) AtI[2] = BUILD_MTCTR(12); // mtctr r12 AtI[3] = BUILD_BCTR(isCall); // bctr/bctrl but I understand now how startFunctionStub() is given StubSize and on PowerPC it's 16 so there's no problem. Cheers, Ralph.

...et!"); > + return 0; > + } > + > + virtual void EmitLabel(uint64_t LabelID) { > + } > + > + > + virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { } > + > + > /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE! > void startFunctionStub(unsigned StubSize, unsigned Alignment = > 1) { > assert(0 && "JIT specific function called!"); > Index: lib/CodeGen/MachOWriter.cpp > =================================================================== > --- lib/CodeGen/MachOWriter.cpp (revision 44794) >...

...} >> + >> + virtual void EmitLabel(uint64_t LabelID) { >> + } >> + >> + >> + virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { } >> + >> + >> /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE! >> void startFunctionStub(unsigned StubSize, unsigned Alignment = >> 1) { >> assert(0 && "JIT specific function called!"); >> Index: lib/CodeGen/MachOWriter.cpp >> =================================================================== >> --- lib/CodeGen/MachOWriter.cpp (...

Hi everyone, Here's a patch that enables exception handling when jitting. I've copy/pasted _many_code from lib/Codegen/DwarfWriter.cpp, so we may need to factorize it, but the functionality is there and I'm very happy with it :) lli should now be able to execute the output from llvm-gcc when using exceptions (the UnwindInst instruction is not involved in this patch). Just add the

Hi everyone, vmkit requires to know the size of a jitted method before emitting the method. This allows to allocate the correct size for the method. The attached patch creates this functionality when the flag SizedMemoryCode is on. In order to implement this functionality, i had to virtualize some MachineCodeEmitter functions. Is it OK to commit the patch? Thanks, Nicolas --------------

...; + JumpTableBase = (void*)(((uintptr_t) JumpTableBase) + >> CurBufferPtr); >> + } >> + >> + virtual bool finishFunction(MachineFunction &F) { >> + MCE->setCurrentPtr(CurBufferPtr); >> + return false; >> + } >> + virtual void startFunctionStub(unsigned StubSize, unsigned >> Alignment) {} >> + virtual void *finishFunctionStub(const Function *F) { return 0; } >> + virtual void addRelocation(const llvm::MachineRelocation&) { } >> + virtual void emitByte(unsigned char B) { >> + CurBufferPtr++; >&g...

...ase) + > CurBufferPtr); > + JumpTableBase = (void*)(((uintptr_t) JumpTableBase) + > CurBufferPtr); > + } > + > + virtual bool finishFunction(MachineFunction &F) { > + MCE->setCurrentPtr(CurBufferPtr); > + return false; > + } > + virtual void startFunctionStub(unsigned StubSize, unsigned > Alignment) {} > + virtual void *finishFunctionStub(const Function *F) { return 0; } > + virtual void addRelocation(const llvm::MachineRelocation&) { } > + virtual void emitByte(unsigned char B) { > + CurBufferPtr++; > + } > + virtual...

...lID) { > + assert(0 && "emit Label not implementated yet!"); > + abort(); > + } > + > + > + virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { } > + > + > /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE! > void startFunctionStub(unsigned StubSize, unsigned Alignment = > 1) { > assert(0 && "JIT specific function called!"); > Index: lib/CodeGen/MachOWriter.cpp > =================================================================== > --- lib/CodeGen/MachOWriter.cpp (revision 46612) >...

...id*)(((uintptr_t) JumpTableBase) + >>> CurBufferPtr); >>> + } >>> + >>> + virtual bool finishFunction(MachineFunction &F) { >>> + MCE->setCurrentPtr(CurBufferPtr); >>> + return false; >>> + } >>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>> Alignment) {} >>> + virtual void *finishFunctionStub(const Function *F) { return 0; } >>> + virtual void addRelocation(const llvm::MachineRelocation&) { } >>> + virtual void emitByte(unsigned char B) { >>> + CurB...

Dear all, Here's a new patch with Evan's comments (thx Evan!) and some cleanups. Now the (duplicated) exception handling code is in a new file: lib/ExecutionEngine/JIT/JITDwarfEmitter. This patch should work on linux/x86 and linux/ppc (tested). Nicolas -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: jit-exceptions.patch URL:

...+ >>>> CurBufferPtr); >>>> + } >>>> + >>>> + virtual bool finishFunction(MachineFunction &F) { >>>> + MCE->setCurrentPtr(CurBufferPtr); >>>> + return false; >>>> + } >>>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>>> Alignment) {} >>>> + virtual void *finishFunctionStub(const Function *F) { return 0; } >>>> + virtual void addRelocation(const llvm::MachineRelocation&) { } >>>> + virtual void emitByte(unsigned char B) { >&g...

...gt; + } >>>>>> + >>>>>> + virtual bool finishFunction(MachineFunction &F) { >>>>>> + MCE->setCurrentPtr(CurBufferPtr); >>>>>> + return false; >>>>>> + } >>>>>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>>>>> Alignment) {} >>>>>> + virtual void *finishFunctionStub(const Function *F) { return >>>>>> 0; } >>>>>> + virtual void addRelocation(const llvm::MachineRelocation&) { } >>>>...

...;>>> + >>>>>>> + virtual bool finishFunction(MachineFunction &F) { >>>>>>> + MCE->setCurrentPtr(CurBufferPtr); >>>>>>> + return false; >>>>>>> + } >>>>>>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>>>>>> Alignment) {} >>>>>>> + virtual void *finishFunctionStub(const Function *F) { return >>>>>>> 0; } >>>>>>> + virtual void addRelocation(const llvm::MachineRelocation&) >...

...rPtr); >>>>> + } >>>>> + >>>>> + virtual bool finishFunction(MachineFunction &F) { >>>>> + MCE->setCurrentPtr(CurBufferPtr); >>>>> + return false; >>>>> + } >>>>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>>>> Alignment) {} >>>>> + virtual void *finishFunctionStub(const Function *F) { return >>>>> 0; } >>>>> + virtual void addRelocation(const llvm::MachineRelocation&) { } >>>>> + virtual...

...>>>>>>> + virtual bool finishFunction(MachineFunction &F) { >>>>>>>> + MCE->setCurrentPtr(CurBufferPtr); >>>>>>>> + return false; >>>>>>>> + } >>>>>>>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>>>>>>> Alignment) {} >>>>>>>> + virtual void *finishFunctionStub(const Function *F) { return >>>>>>>> 0; } >>>>>>>> + virtual void addRelocation(const llvm::MachineRelocat...

...>>> + virtual bool finishFunction(MachineFunction &F) { >>>>>>>>> + MCE->setCurrentPtr(CurBufferPtr); >>>>>>>>> + return false; >>>>>>>>> + } >>>>>>>>> + virtual void startFunctionStub(unsigned StubSize, unsigned >>>>>>>>> Alignment) {} >>>>>>>>> + virtual void *finishFunctionStub(const Function *F) >>>>>>>>> { return >>>>>>>>> 0; } >>>>>>>>> +...