aboutsummaryrefslogtreecommitdiff
path: root/include/llvm/MC/MCObjectStreamer.h
AgeCommit message (Collapse)Author
2013-04-17Add support for subsections to the ELF assembler. Fixes PR8717.Peter Collingbourne
Differential Revision: http://llvm-reviews.chandlerc.com/D598 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179725 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31Give the MCStreamer class hierarchy LLVM RTTI facilities for use withChandler Carruth
isa<> and dyn_cast<>. In several places, code is already hacking around the absence of this, and there seem to be several interfaces that might be lifted and/or devirtualized using this. This change was based on a discussion with Jim Grosbach about how best to handle testing for specific MCStreamer subclasses. He said that this was the correct end state, and everything else was too hacky so I decided to just make it so. No functionality should be changed here, this is just threading the kind through all the constructors and setting up the classof overloads. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174113 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09These functions have default arguments of 0 for the last arg. UseEric Christopher
them and add one where it seemed obvious that we wanted one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171932 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Add the align_to_end option to .bundle_lock in the MC implementation of alignedEli Bendersky
bundling. The document describing this feature and the implementation has also been updated: https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171797 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-20Aligned bundling support. Following the discussion here:Eli Bendersky
http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-December/056754.html The proposal and implementation are fully documented here: https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm Tests will follow shortly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170718 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-16This patch is needed to make c++ exceptions work for mips16.Reed Kotler
Mips16 is really a processor decoding mode (ala thumb 1) and in the same program, mips16 and mips32 functions can exist and can call each other. If a jal type instruction encounters an address with the lower bit set, then the processor switches to mips16 mode (if it is not already in it). If the lower bit is not set, then it switches to mips32 mode. The linker knows which functions are mips16 and which are mips32. When relocation is performed on code labels, this lower order bit is set if the code label is a mips16 code label. In general this works just fine, however when creating exception handling tables and dwarf, there are cases where you don't want this lower order bit added in. This has been traditionally distinguished in gas assembly source by using a different syntax for the label. lab1: ; this will cause the lower order bit to be added lab2=. ; this will not cause the lower order bit to be added In some cases, it does not matter because in dwarf and debug tables the difference of two labels is used and in that case the lower order bits subtract each other out. To fix this, I have added to mcstreamer the notion of a debuglabel. The default is for label and debug label to be the same. So calling EmitLabel and EmitDebugLabel produce the same result. For various reasons, there is only one set of labels that needs to be modified for the mips exceptions to work. These are the "$eh_func_beginXXX" labels. Mips overrides the debug label suffix from ":" to "=." . This initial patch fixes exceptions. More changes most likely will be needed to DwarfCFException to make all of this work for actual debugging. These changes will be to emit debug labels in some places where a simple label is emitted now. Some historical discussion on this from gcc can be found at: http://gcc.gnu.org/ml/gcc-patches/2008-08/msg00623.html http://gcc.gnu.org/ml/gcc-patches/2008-11/msg01273.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170279 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Make the MCStreamer have a reset method and call that after finalization of ↵Pedro Artigas
the asm printer, also changed MCContext to a single reset only method for simplicity as requested on the list git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170041 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Lift EmitAssignment into MCObjectStreamer which gets rid of at least threeEli Bendersky
duplicate implementations in format-specific streamers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169613 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-04Hoist some grossly duplicated code from the COFF/ELF/MachO streamers into ↵Benjamin Kramer
MCObjectStreamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165225 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-01Provide a shortcut for MCObjectStreamer when emitting fills.Benjamin Kramer
Reduces runtime of i386-large-relocations.s by 10x in Release builds, even more in Debug+Asserts builds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164945 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-22For mips64 switch statements in subroutines could generate Jack Carter
within the codegen EK_GPRel64BlockAddress. This was not supported for direct object output and resulted in an assertion. This change adds support for EK_GPRel64BlockAddress for direct object. One fallout from this is to turn on rela relocations for mips64 to match gas. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162334 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27Better diagnostic for malformed .org assembly directive.Jim Grosbach
Provide source line number information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149101 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-09Don't print an unused label before .cfi_endproc.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147763 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-07Don't print a label before .cfi_startproc when we don't need to. This makesRafael Espindola
the produce assembly when using CFI just a bit more readable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-07Split Finish into Finish and FinishImpl to have a common place to do end ofRafael Espindola
file error checking. Use that to error on an unfinished cfi_startproc. The error is not nice, but is already better than a segmentation fault. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147717 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23This patch addresses gp relative fixups/relocations for jump tables.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145112 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-25Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to ↵Evan Cheng
createMCAsmBackend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136010 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14Unfortunately several files in MC are badly violating layering rule by usingEvan Cheng
TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are other cases of violations, but this is probably the worst. This patch is but one small step towards fixing this. 500 more steps to go. :-( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135131 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01Simplify the handling of pcrel relocations on ELF. Now we do the right thingRafael Espindola
for all symbol differences and can drop the old EmitPCRelSymbolValue method. This also make getExprForFDESymbol on ELF equal to the one on MachO, and it can be made non-virtual. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130634 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-21Remove unused argument.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129955 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-09Add constructors to MCElfStreamer and MCObjectStreamer to take an extra ↵Jan Sjödin
MCAssembler * argument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127343 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16Add support for pushsection and popsection. Patch by Joerg Sonnenberger.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125629 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28Relax address updates in the eh_frame section.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122591 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Fixed version of 121434 with no new memory leaks.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121471 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Revert my previous patch to make the valgrind bots happy.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121461 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-09Initial support for the cfi directives. This is just enough to getRafael Espindola
f: .cfi_startproc nop .cfi_endproc assembled (on ELF). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121434 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07Sorry for such a large commit. The summary is that only MachO cares about theRafael Espindola
actuall addresses in a .o file, so it is better to let the MachO writer compute it. This is good for two reasons. First, areas that shouldn't care about addresses now don't have access to it. Second, the layout of each section is independent. I should use this in a subsequent commit to speed it up. Most of the patch is just removing the section address computation. The two interesting parts are the change on how we handle padding in the end of sections and how MachO can get the address of a-b when a and b are in different sections. Since now the expression evaluation normally doesn't know the section address, it will think that a-b needs relocation and let the MachO writer know. Once it has computed the section addresses, it calls back the expression evaluation with the section addresses to resolve these expressions. The remaining problem is the handling of padding. Currently it will create a special alignment fragment at the end. Since that fragment doesn't update the alignment of the section, it needs the real address to be computed. Since now the layout will not compute a-b with a and b in different sections, the only effect that the special alignment fragment has is update the address size of the section. This can also be done by the MachO writer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121076 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04There are two reasons why we might want to useRafael Espindola
foo = a - b .long foo instead of just .long a - b First, on darwin9 64 bits the assembler produces the wrong result. Second, if "a" is the end of the section all darwin assemblers (9, 10 and mc) will not consider a - b to be a constant but will if the dummy foo is created. Split how we handle these cases. The first one is something MC should take care of. The second one has to be handled by the caller. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120889 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-03Try to resolve symbol differences early, and if successful create a plainRafael Espindola
data fragment. This reduces the time to assemble the test in 8711 from 60s to 54s. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120767 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02Use set directive for StartMinusEndExpr.Devang Patel
This is a fix for llvm-gcc-i386-darwin9 buildbot failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02Move EmitValueToOffset to the ObjectStreamer.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120691 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02Add EmitInstToFragment to the generic object streamer.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-28Move EmitValue to MCObjectStreamer.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120269 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-28Fixed verson of r120245.Rafael Espindola
Factor some duplicated code into MCObjectStreamer::EmitLabel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120248 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-28Revert previous patch while I debug the darwin bootstrap failure.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120246 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-28Factor some duplicated code into MCObjectStreamer::EmitLabel.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120245 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-02Add support for expressions in .sleb/.uleb directives.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118023 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-01Move EmitInstruction to MCObjectStreamer so that ELF and MachO can share it.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-01Implement .weakref.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117911 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-22Avoid some Mach-O specific alignment being done on ELF.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114594 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19MC: Add WinCOFFStreamer implementation and merge common code from MachOMichael J. Spencer
into MCObjectStreamer. Origonal Windows COFF implementation by Nathan Jedffords. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108678 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16MC: Lift SwitchSection() and Finish() into MCObjectStreamer.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106141 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16MC: Factor out an MCObjectStreamer class, which will be shared by the concreteDaniel Dunbar
object file format writers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106140 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-08-06 05:40:26 +0000