search for: dw_eh_pe_omit

...not check the instructions in the test case for now, but commit the code again with all the other check lines in place. Then we can work on the instruction issue independently of everything else. Note, I did take a look at the fixes you proposed. I need to write a test to ensure your handling of DW_EH_PE_omit is correct, but I think the changes are good. We can work on integrating those after landing the original patch (assuming its eventually ok to do so). Thanks, Pete > On Jan 20, 2016, at 6:58 AM, Rafael Espíndola via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > On 20 January 20...

...iterEiA_l .Lfunc_end153: .Leh_func_end153: .section .gcc_except_table,"a", at progbits .align 4 GCC_except_table153: .byte 0x0 # Padding .Lexception153: .byte 0xFF # @LPStart format (DW_EH_PE_omit) .byte 0x0 # @TType format (DW_EH_PE_absptr) .uleb128 28 # @TType base offset .byte 0x3 # Call site format (DW_EH_PE_udata4) .uleb128 26...

...end153: > .section .gcc_except_table,"a", at progbits > .align 4 > GCC_except_table153: > .byte 0x0 # Padding > .Lexception153: > .byte 0xFF # @LPStart format > (DW_EH_PE_omit) > .byte 0x0 # @TType format > (DW_EH_PE_absptr) > .uleb128 28 # @TType base offset > > .byte 0x3 # Call site format > (DW_EH_PE_udata4) > ....

> On 20 January 2016 at 09:21, Igor Laevsky via llvm-dev > <llvm-dev at lists.llvm.org> wrote: >> Hi all, >> >> Not so long ago we have found ourselves in need of a robust _eh_frame parser. All we wanted is the ability to parse .eh_frame section emitted by LLVM's MCJIT. Considering this, LLVM would be a natural place for implementing such parser. >>

Hi James, > I've been trying to get a minimal test function to work, which simply > invokes _Unwind_RaiseException with a single clean-up landing pad. > However. when I run it my personality function is not getting called - > _Unwind_RaiseException simply returns apparently doing nothing. Looking > at the x86-64 assembly output from llc, I can see this is happening >

...(unsigned i = 0; i != SizeAlign; ++i) { > + MCE->emitByte(0); > + // Asm->EOL("Padding"); > + } > + > + unsigned char* DwarfExceptionTable = (unsigned char*)MCE- > >getCurrentPCValue(); > + > + // Emit the header. > + MCE->emitByte(dwarf::DW_EH_PE_omit); > + // Asm->EOL("LPStart format (DW_EH_PE_omit)"); > + MCE->emitByte(dwarf::DW_EH_PE_absptr); > + // Asm->EOL("TType format (DW_EH_PE_absptr)"); > + MCE->emitULEB128Bytes(TypeOffset); > + // Asm->EOL("TType base offset"); > + MC...

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:

Hi, I'm trying to get exception handling working in my compiler targetting LLVM. I've been working from the LLVM exception handling documentation (including http://llvm.org/docs/ExceptionHandling.html and http://wiki.llvm.org/HowTo:_Build_JIT_based_Exception_mechanism) and looking at g++-llvm's output. I've been trying to get a minimal test function to work, which simply invokes

Thx again Evan for the review. Here's a new patch for the JIT in itself. The major changes are: 1) A JITMemoryManager now has a flag saying "I require to know the size of what you want to emit" 2) DwarfJITEmitter is augmented with GetSize* functions 3) JITEmitter::startFunction checks if the JITMemoryManager requires to know the size. If so, it computes it and gives it through the

...exception table. > + EmitAlignment(4); > + for (unsigned i = 0; i != SizeAlign; ++i) { > + EmitInt8(0); > + // Asm->EOL("Padding"); > + } > + > + unsigned char* DwarfExceptionTable = CurBufferPtr; > + > + // Emit the header. > + EmitInt8(dwarf::DW_EH_PE_omit); > + // Asm->EOL("LPStart format (DW_EH_PE_omit)"); > + EmitInt8(dwarf::DW_EH_PE_absptr); > + // Asm->EOL("TType format (DW_EH_PE_absptr)"); > + EmitULEB128Bytes(TypeOffset); > + // Asm->EOL("TType base offset"); > + EmitInt8(dwarf::DW...

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