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path: root/lib/MC/MCDwarf.cpp
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2011-09-06As a first step, emit both the compact unwind and CIE/FDEs for a function.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139152 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24Some autoconf tests use module level inline asm to test compiler's handling ofEvan Cheng
.cfi_startproc. e.g. libffi: $ cat confopt.c asm (".cfi_startproc\n\t.cfi_endproc"); int main () { return 0; } Teach MC / dwarf emission to handle these cfi directives which essentially create an empty frame. rdar://10017184 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138504 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-22Emit the __compact_unwind section first. If there are any frames which weren'tBill Wendling
emitted, emit them next as CIE/FDEs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135807 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20Goodbye TargetAsmInfo. This eliminate last bit of CodeGen and Target in llvm-mc.Evan Cheng
There is still a bit more refactoring left to do in Targets. But we are now very close to fixing all the layering issues in MC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135611 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20Add MCObjectFileInfo and sink the MCSections initialization code fromEvan Cheng
TargetLoweringObjectFileImpl down to MCObjectFileInfo. TargetAsmInfo is done to one last method. It's *almost* gone! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135569 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-19Micro-opt: Only emit compact unwind if there is a compact unwind encoding to ↵Bill Wendling
emit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135452 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-19Use the CompactUnwindEncoding from the Frame, if it's defined.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135451 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions forEvan Cheng
better location welcome). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135438 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo downEvan Cheng
to MCRegisterInfo. Also initialize the mapping at construction time. This patch eliminate TargetRegisterInfo from TargetAsmInfo. It's another step towards fixing the layering violation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135424 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Move some parts of TargetAsmInfo down to MCAsmInfo. This is not the greatestEvan Cheng
solution but it is a small step towards removing the horror that is TargetAsmInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135237 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Remove setting the bit for personality function. It should be set by the linker.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135236 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Encode that we have a personality function.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135227 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14* If we have an LSDA, we need to mark it in the encoding.Bill Wendling
* The personality function should be encoded as an absolute pointer to the function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135215 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
2011-07-13Don't emit the FDE end label if the last thing emitted was a compact unwind andBill Wendling
not the FDE git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135020 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-07Add a target hook to encode the compact unwind information.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134577 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-06Clean up the #includes.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134557 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Remove tabs.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134212 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Improve comment: Show the register the DWARF label is added to.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134209 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Add one more comment to the FDE verbose asm output.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134200 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Add comments to the FDE.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134196 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Add more comments to the ASM output for the CIE's "moves".Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134194 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Add comments to the ASM output to help understand the compact unwind and CIE ↵Bill Wendling
tables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134191 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30* Use the proper size to output the range size.Bill Wendling
* Rough in the compact encoding part. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134119 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29Stupid error: If the LSDA and Personality functions aren't there, emit 0 insteadBill Wendling
of the encoding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134117 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29We don't want to use relocations inside the compact unwind section. Just use theBill Wendling
symbols instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134115 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23Use a reference. Don't make a useless copy of the vector.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133707 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23Formatting changes. No functionality change.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133706 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23Use the presence of the __compact_unwind section to indicate that a targetBill Wendling
supports compact unwind info instead of having a separate flag indicating this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133685 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23Some skeleton code to emit the compact unwind. If the information is unable toBill Wendling
be emitted in a compact way, we then default to emitting a CIE and FDE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133676 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18Directly print to a raw_ostream instead of printing to a buffer first.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133352 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20No reason not to allow defining the CFA as a reg w/ offset zero.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131760 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Avoid a gcc warning.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131161 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10On MachO, unlike ELF, there should be no relocation to produce the CIE pointer.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131149 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10The EH symbols are only needed in eh_frame, not debug_frame.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131146 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10In a debug_frame the cfi offset is to the start of the debug_frame section!Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131129 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Add support for producing .deubg_frame sections.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131121 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Small cleanups.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131120 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Remove unused argument.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131118 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-08Eliminate an unused line to fix a warning.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131078 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-08Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy withRafael Espindola
the smaller encoding and this cuts 270336 bytes from a release version of clang and 1246272 bytes from a debug build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131067 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Switch Darwin to the generic CIE/FDE printer.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131031 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03MCDwarf: Don't save Twine to local variable, this is almost never safe to doDaniel Dunbar
(and should thus never be done). - Should fix a crash on win32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130793 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01GCC uses a different encoding of pointers in the FDE when usingRafael Espindola
-fno-dwarf2-cfi-asm. Implement the same behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130637 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
2011-04-29Avoid some uses of .uleb128. This is a small speedup and more importantlyRafael Espindola
lets this code be used when producing assembly code for old assemblers without uleb support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130544 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29Last bit by bit compatibility patch to MCDwarf.cpp: If a FDE with no LSDA isRafael Espindola
assigned to a CIE that requires one, just output a 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130472 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29Add an alternative implementation of CIE and FDE emission that outputs themRafael Espindola
in the same order as the one in CodeGen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130471 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28Add the getExprForFDESymbol method that responsible for computing theRafael Espindola
expressions used in the FDE to refer to symbols. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130437 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it whenRafael Espindola
converting the symbol passed to .cfi_personality into bytes is the file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130400 91177308-0d34-0410-b5e6-96231b3b80d8
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