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...lib/ExecutionEngine/JIT/JITEmitter.cpp (working copy) > > > > @@ -974,14 +974,24 @@ > > > > SavedBufferBegin = BufferBegin; > > > > SavedBufferEnd = BufferEnd; > > > > SavedCurBufferPtr = CurBufferPtr; > > > > + uint8_t *FrameRegister; > > > > > > > > - BufferBegin = CurBufferPtr = > > > > MemMgr->startExceptionTable(F.getFunction(), > > > > - ActualSize); > > > > - BufferEnd = BufferBegin+ActualSize...

...=================================== --- lib/ExecutionEngine/JIT/JITEmitter.cpp (revision 162311) +++ lib/ExecutionEngine/JIT/JITEmitter.cpp (working copy) @@ -974,14 +974,24 @@ SavedBufferBegin = BufferBegin; SavedBufferEnd = BufferEnd; SavedCurBufferPtr = CurBufferPtr; + uint8_t *FrameRegister; - BufferBegin = CurBufferPtr = MemMgr->startExceptionTable(F.getFunction(), - ActualSize); - BufferEnd = BufferBegin+ActualSize; - EmittedFunctions[F.getFunction()].ExceptionTable = BufferBegin; - uint8_t *EhStart; -...

On Aug 21, 2012, at 2:12 PM, Michael Muller <mmuller at enduden.com> wrote: > > Hi, I found a bug in the code that generates exception tables, I've attached > what I think is the correct fix. > > When you run out of space writing to a buffer, the buffer management code > simply stops writing at the end of the buffer. It is the responsibility of > the caller to

Eric Christopher wrote: > > On Aug 21, 2012, at 2:12 PM, Michael Muller <mmuller at enduden.com> wrote: > > > > > Hi, I found a bug in the code that generates exception tables, I've attached > > what I think is the correct fix. > > > > When you run out of space writing to a buffer, the buffer management code > > simply stops writing at the

...Size) { return mgr()->startExceptionTable(F, ActualSize); } virtual void endExceptionTable(const llvm::Function *F, uint8_t *TableStart, uint8_t *TableEnd, uint8_t *FrameRegister) { return mgr()->endExceptionTable(F, TableStart, TableEnd, FrameRegister); } virtual void deallocateExceptionTable(void *ET) { mgr()->deallocateExceptionTable(ET); } #endif virtual bool CheckInvariants(std::...

...urn mgr()->startExceptionTable(F, ActualSize); > } > virtual void endExceptionTable(const llvm::Function *F, > uint8_t *TableStart, > uint8_t *TableEnd, > uint8_t *FrameRegister) { > return mgr()->endExceptionTable(F, TableStart, TableEnd, > FrameRegister); > } > virtual void deallocateExceptionTable(void *ET) { > mgr()->deallocateExceptionTable(ET); > } > #endif > v...

...xceptionTable(F, ActualSize); >> } >> virtual void endExceptionTable(const llvm::Function *F, >> uint8_t *TableStart, >> uint8_t *TableEnd, >> uint8_t *FrameRegister) { >> return mgr()->endExceptionTable(F, TableStart, TableEnd, >> FrameRegister); >> } >> virtual void deallocateExceptionTable(void *ET) { >> mgr()->deallocateExceptionTable(ET); >> }...

...HasVariableSizeAlloca bool : HasStackRealignment bool : HasLiveOutInfo bool : Reserved [12] } uint16 : Frame Base Register Dwarf RegNum uint16 : Num Frame Registers uint16 : Frame Register Index uint16 : Num StackMap Records uint16 : StackMap Record Index } align to 4 bytes FrameRegister[] { uint16 : Dwarf RegNum int16 : Offset uint8 : Size in Bytes uint8 : Flags { bool : IsSpilled bool : Reserved [7] } } align to 8 bytes StackMapRecord[] { uint64 : PatchPoint ID uint32 : Instruction Offset uint8 : Call size (bytes) uint8 : Flags { bool : HasLi...

...is method is called when the JIT is > done emitting > + /// the exception table. > + virtual void endExceptionTable(const Function *F, unsigned char > *TableStart, > + unsigned char *TableEnd, > + unsigned char* FrameRegister) = 0; > }; > > } // end namespace llvm. > Index: include/llvm/CodeGen/MachineCodeEmitter.h > =================================================================== > --- include/llvm/CodeGen/MachineCodeEmitter.h (revision 46612) > +++ include/llvm/CodeGen/MachineCodeEmitter.h (w...

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:

...bool : HasLiveOutInfo > bool : Reserved [12] > } > uint16 : Frame Base Register Dwarf RegNum > uint16 : Num Frame Registers > uint16 : Frame Register Index > uint16 : Num StackMap Records > uint16 : StackMap Record Index > } > > align to 4 bytes > FrameRegister[] { > uint16 : Dwarf RegNum > int16 : Offset > uint8 : Size in Bytes > uint8 : Flags { > bool : IsSpilled > bool : Reserved [7] > } > } > > align to 8 bytes > StackMapRecord[] { > uint64 : PatchPoint ID > uint32 : Instruction Offset...

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 --------------

...r- >> >>> startExceptionTable(F.getFunction(), >>> >> >> ActualSize); >> BufferEnd = BufferBegin+ActualSize; >> @@ -598,11 +639,10 @@ >> TheJIT->RegisterTable(FrameRegister); >> } >> MMI->EndFunction(); >> - >> return false; >> } >> >> -void JITEmitter::emitConstantPool(MachineConstantPool *MCP) { >> +void JITEmitter::initConstantPool(MachineConstantPool *MCP) { >> const std::vector<MachineConstantP...

...> - > + > BufferBegin = CurBufferPtr = MemMgr- > >startExceptionTable(F.getFunction(), > > ActualSize); > BufferEnd = BufferBegin+ActualSize; > @@ -598,11 +639,10 @@ > TheJIT->RegisterTable(FrameRegister); > } > MMI->EndFunction(); > - > return false; > } > > -void JITEmitter::emitConstantPool(MachineConstantPool *MCP) { > +void JITEmitter::initConstantPool(MachineConstantPool *MCP) { > const std::vector<MachineConstantPoolEntry> &Constants = MCP-...

...>> BufferBegin = CurBufferPtr = MemMgr- >>> >>>> startExceptionTable(F.getFunction(), >>>> >>> >>> ActualSize); >>> BufferEnd = BufferBegin+ActualSize; >>> @@ -598,11 +639,10 @@ >>> TheJIT->RegisterTable(FrameRegister); >>> } >>> MMI->EndFunction(); >>> - >>> return false; >>> } >>> >>> -void JITEmitter::emitConstantPool(MachineConstantPool *MCP) { >>> +void JITEmitter::initConstantPool(MachineConstantPool *MCP) { >>> const...

...;>> >>>>> startExceptionTable(F.getFunction(), >>>>> >>>>> >>>> ActualSize); >>>> BufferEnd = BufferBegin+ActualSize; >>>> @@ -598,11 +639,10 @@ >>>> TheJIT->RegisterTable(FrameRegister); >>>> } >>>> MMI->EndFunction(); >>>> - >>>> return false; >>>> } >>>> >>>> -void JITEmitter::emitConstantPool(MachineConstantPool *MCP) { >>>> +void JITEmitter::initConstantPool(MachineConstant...

...t;>>>>>> >>>>>>> >>>>>>> >>>>>> ActualSize); >>>>>> BufferEnd = BufferBegin+ActualSize; >>>>>> @@ -598,11 +639,10 @@ >>>>>> TheJIT->RegisterTable(FrameRegister); >>>>>> } >>>>>> MMI->EndFunction(); >>>>>> - >>>>>> return false; >>>>>> } >>>>>> >>>>>> -void JITEmitter::emitConstantPool(MachineConstantPool *MCP) { >>>&g...

...gt;>>>> >>>>>>>> >>>>>>>> >>>>>>> ActualSize); >>>>>>> BufferEnd = BufferBegin+ActualSize; >>>>>>> @@ -598,11 +639,10 @@ >>>>>>> TheJIT->RegisterTable(FrameRegister); >>>>>>> } >>>>>>> MMI->EndFunction(); >>>>>>> - >>>>>>> return false; >>>>>>> } >>>>>>> >>>>>>> -void JITEmitter::emitConstantPool(MachineConstan...

...gt; >>>>>> startExceptionTable(F.getFunction(), >>>>>> >>>>>> >>>>> ActualSize); >>>>> BufferEnd = BufferBegin+ActualSize; >>>>> @@ -598,11 +639,10 @@ >>>>> TheJIT->RegisterTable(FrameRegister); >>>>> } >>>>> MMI->EndFunction(); >>>>> - >>>>> return false; >>>>> } >>>>> >>>>> -void JITEmitter::emitConstantPool(MachineConstantPool *MCP) { >>>>> +void JITEmitter::ini...

...;>>> >>>>>>>>> >>>>>>>> ActualSize); >>>>>>>> BufferEnd = BufferBegin+ActualSize; >>>>>>>> @@ -598,11 +639,10 @@ >>>>>>>> TheJIT->RegisterTable(FrameRegister); >>>>>>>> } >>>>>>>> MMI->EndFunction(); >>>>>>>> - >>>>>>>> return false; >>>>>>>> } >>>>>>>> >>>>>>>> -void JITEmitter::emi...