Greg Fitzgerald 148c7f286c Fix inline assembly that switches between ARM and Thumb modes ... This patch restores the ARM mode if the user's inline assembly does not. In the object streamer, it ensures that instructions following the inline assembly are encoded correctly and that correct mapping symbols are emitted. For the asm streamer, it emits a .arm or .thumb directive. This patch does not ensure that the inline assembly contains the ADR instruction to switch modes at runtime. The problem we need to solve is code like this: int foo(int a, int b) { int r = a + b; asm volatile( ".align 2 \n" ".arm \n" "add r0,r0,r0 \n" : : "r"(r)); return r+1; } If we compile this function in thumb mode then the inline assembly will switch to arm mode. We need to make sure that we switch back to thumb mode after emitting the inline assembly or we will incorrectly encode the instructions that follow (i.e. the assembly instructions for return r+1). Based on patch by David Peixotto Change-Id: Ib57f6d2d78a22afad5de8693fba6230ff56ba48b git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199818 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-22 18:32:35 +00:00
..
MCDisassembler	For the 'C' disassembler API, add a new ReferenceType for the	2014-01-06 22:08:08 +00:00
MCParser	Fix parsing of .symver directive on ARM	2014-01-15 22:40:02 +00:00
CMakeLists.txt	Add a MCAsmInfoELF class and factor some code into it.	2013-10-16 01:34:32 +00:00
ELFObjectWriter.cpp	Force emit a relocation for @gnu_indirect_function symbols so that the indirect	2014-01-08 18:50:32 +00:00
LLVMBuild.txt
MachObjectWriter.cpp	Correct word hyphenations	2013-12-05 05:44:44 +00:00
Makefile
MCAsmBackend.cpp	Use llvm::array_lengthof to replace sizeof(array)/sizeof(array[0]).	2013-07-15 04:27:47 +00:00
MCAsmInfo.cpp	CommentColumn is always 40. Simplify.	2014-01-16 07:04:11 +00:00
MCAsmInfoCOFF.cpp	Make the llvm mangler depend only on DataLayout.	2014-01-03 19:21:54 +00:00
MCAsmInfoDarwin.cpp	Make the llvm mangler depend only on DataLayout.	2014-01-03 19:21:54 +00:00
MCAsmInfoELF.cpp	Refactor the setting of PrivateGlobalPrefix.	2013-12-02 23:39:26 +00:00
MCAsmStreamer.cpp	Add an emitRawComment function and use it to simplify some uses of EmitRawText.	2014-01-16 16:28:37 +00:00
MCAssembler.cpp	Fix indentation.	2014-01-13 15:50:36 +00:00
MCAtom.cpp	[weak vtables] Remove a bunch of weak vtables	2013-11-19 00:57:56 +00:00
MCCodeEmitter.cpp
MCCodeGenInfo.cpp
MCContext.cpp	Re-sort all of the includes with ./utils/sort_includes.py so that	2014-01-07 11:48:04 +00:00
MCDisassembler.cpp	Follow up of the introduction of MCSymbolizer.	2013-05-24 22:51:52 +00:00
MCDwarf.cpp	[patch] Adjust behavior of FDE cross-section relocs for targets that don't support abs-differences.	2014-01-08 10:22:54 +00:00
MCELF.cpp	[mc] Fix ELF st_other flag.	2013-12-05 00:34:11 +00:00
MCELFObjectTargetWriter.cpp	Provide basic type safety for array_pod_sort comparators.	2013-09-22 14:09:50 +00:00
MCELFStreamer.cpp	Re-sort all of the includes with ./utils/sort_includes.py so that	2014-01-07 11:48:04 +00:00
MCExpr.cpp	ARM: add tlsldo relocation	2014-01-20 11:00:40 +00:00
MCExternalSymbolizer.cpp	Tweak the MCExternalSymbolizer to not use the SymbolLookUp() call back	2014-01-21 00:23:17 +00:00
MCFunction.cpp	Style cleanup following David's review for r188876.	2013-08-21 19:40:25 +00:00
MCInst.cpp
MCInstPrinter.cpp	[MC] When MCInstPrint::printAnnotation uses a comment stream, it has to ensure	2013-10-01 19:21:24 +00:00
MCInstrAnalysis.cpp	MC: Disassembled CFG reconstruction.	2013-05-24 01:07:04 +00:00
MCLabel.cpp
MCMachObjectTargetWriter.cpp
MCMachOStreamer.cpp	Move .ident handling to MCStreamer.	2013-10-16 01:05:45 +00:00
MCModule.cpp	MC CFG: Split MCBasicBlocks to mirror atom splitting.	2013-08-21 07:28:24 +00:00
MCModuleYAML.cpp	MC CFG: Add YAML MCModule representation to enable MC CFG testing.	2013-08-21 07:29:02 +00:00
MCNullStreamer.cpp	Add a MCTargetStreamer interface.	2013-10-08 13:08:17 +00:00
MCObjectDisassembler.cpp	Create an atom with just the data that failed to disassemble.	2013-10-16 19:03:14 +00:00
MCObjectFileInfo.cpp	Revert "Revert r198851, "Prototype of skeleton type units for fission""	2014-01-10 01:38:41 +00:00
MCObjectStreamer.cpp	Re-sort all of the includes with ./utils/sort_includes.py so that	2014-01-07 11:48:04 +00:00
MCObjectSymbolizer.cpp	Re-sort all of the includes with ./utils/sort_includes.py so that	2014-01-07 11:48:04 +00:00
MCObjectWriter.cpp
MCPureStreamer.cpp	Move .ident handling to MCStreamer.	2013-10-16 01:05:45 +00:00
MCRegisterInfo.cpp	Make SubRegIndex size mandatory, following r183020.	2013-05-31 23:45:26 +00:00
MCRelocationInfo.cpp	Re-sort all of the includes with ./utils/sort_includes.py so that	2014-01-07 11:48:04 +00:00
MCSection.cpp
MCSectionCOFF.cpp	MC COFF: Emit the 'b' section flag for .bss sections in GNU assembly	2013-12-17 22:12:40 +00:00
MCSectionELF.cpp	Remove AllowQuotesInName and friends from MCAsmInfo.	2013-11-13 14:01:59 +00:00
MCSectionMachO.cpp	Correct word hyphenations	2013-12-05 05:44:44 +00:00
MCStreamer.cpp	Fix inline assembly that switches between ARM and Thumb modes	2014-01-22 18:32:35 +00:00
MCSubtargetInfo.cpp	MC: Don't assume incoming StringRef's are null terminated.	2013-10-13 22:09:26 +00:00
MCSymbol.cpp	Don't mangle \n and "	2013-11-14 06:05:49 +00:00
MCSymbolizer.cpp	Add MCSymbolizer for symbolic/annotated disassembly.	2013-05-24 00:39:57 +00:00
MCValue.cpp
MCWin64EH.cpp	Fix alignment of unwind data.	2013-09-15 18:01:09 +00:00
SubtargetFeature.cpp	MC: Don't assume incoming StringRef's are null terminated.	2013-10-13 22:09:26 +00:00
WinCOFFObjectWriter.cpp	MC: Fatally error if subtraction operand is bad	2014-01-06 07:39:46 +00:00
WinCOFFStreamer.cpp	clang-format a couple of mis-formatted functions	2013-12-20 20:16:51 +00:00