Commit Graph

92 Commits

Author SHA1 Message Date
Benjamin Kramer
3f4c979e1b Twinify.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143811 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-05 13:11:25 +00:00
Benjamin Kramer
c25c908977 Add an option to pad an uleb128 to MCObjectWriter and remove the uleb128 encoding from the DWARF asm printer.
As a side effect we now print dwarf ulebs with .ascii directives.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-05 11:52:44 +00:00
Nick Lewycky
44d798d976 Add support for a new extension to the .file directive:
.file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142300 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-17 23:05:28 +00:00
Owen Anderson
2fec6c5ff1 Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141135 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 23:26:17 +00:00
Benjamin Kramer
2df9f8df95 Initialize member variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138548 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 04:04:18 +00:00
Evan Cheng
5fbe5e783e Some autoconf tests use module level inline asm to test compiler's handling of
.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
2011-08-24 22:31:37 +00:00
Rafael Espindola
49cb9b8886 Assume .cfi_startproc is the first thing in a function. If the function is
externally visable, create a local symbol to use in the CFE. If not, use the
function label itself.

Fixes PR10420.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136716 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-02 20:24:22 +00:00
Bill Wendling
d967578a8c Add a method to set compact unwind encoding information in a frame.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135449 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-19 00:01:42 +00:00
Evan Cheng
1be0e271a0 Move some parts of TargetAsmInfo down to MCAsmInfo. This is not the greatest
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
2011-07-15 02:09:41 +00:00
Roman Divacky
65891533a3 Make EmitIntValue() work properly on big-endian targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132715 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-07 17:31:02 +00:00
Charles Davis
c4cbf9b6aa Start keeping track of where the various unwind instructions are in the prolog.
Use them to calculate the offset inside the prolog. Emit this value when
emitting the unwind codes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132177 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27 03:25:01 +00:00
Charles Davis
4eeb7b662b My attempt at fixing the leak reported by the valgrind buildbots. Valgrind will
still report leaks, but they're spurious now. Valgrind cannot peer into
std::vector objects--or any dynamic array, for that matter--because it doesn't
know how big the array is.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132174 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27 02:01:08 +00:00
Charles Davis
c2d3022aa6 Fix inverted conditional in SaveReg and SaveXMM. Err when the frame pointer is
already defined, and err when the PushMachFrame operation isn't the first
operation (if specified at all).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132173 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27 01:42:17 +00:00
Charles Davis
ca93138e11 Test .seh_startchained and .seh_endchained parsing.
Rework how the MCWin64EHUnwindInfo instances are stored. Fix issues with
chained unwind areas exposed by the test that were related to this.

The ChainedParent field had the wrong address, because when the chained unwind
info was added, the addresses shifted around. Now we store the pointers to the
structures, which are now allocated from the MC heap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132106 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26 02:45:47 +00:00
Charles Davis
40de0e013a Test basic SEH directive-parsing functionality. Fix a latent bug exposed by
this test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132004 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24 21:22:53 +00:00
Charles Davis
fbc539ff37 Add methods to parse the SEH directives to the COFFAsmParser. Implement some
of them, particularly the ones that don't take arguments. Also implement
.seh_proc and .seh_handler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131866 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-22 21:12:15 +00:00
Charles Davis
38ea9eecd7 Implement emission of all Win64 exception tables. Make the COFF streamer emit
these tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-22 04:15:07 +00:00
Charles Davis
edeecbff0e Don't allow unaligned offsets and sizes in the Win64 EH directives.
Also, fix threshold for 'Big' register saves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131830 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-22 00:56:20 +00:00
Charles Davis
81f3830f2e Don't allow .seh_handler and .seh_handlerdata directives inside chained
unwind areas.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131795 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-21 17:36:25 +00:00
Charles Davis
321fe74b2d A handler for a function in the Win64 EH scheme can be both an unwind handler
and an exception handler. Handle that case.

Also, add an 'Emitted' member to the MCWin64EHUnwindInfo struct. It will be
needed later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131791 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-21 15:57:49 +00:00
Charles Davis
5c2256a571 Set the "LastFrameInst" field when streaming a .seh_setframe directive. This
is needed for an upcoming patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131772 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-21 00:09:04 +00:00
Charles Davis
d0b76d0004 "Implement" the HandlerData Win64 EH method in the base MCStreamer.
There's really nothing to implement. All this really does is swap to a
pseudo-section that later gets written to the unwind info struct. That
needs to be implemented in the object streamers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131734 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20 16:06:22 +00:00
Rafael Espindola
78ff647e44 Looks like OS X assemblers (including MC) don't like
foo:
bar = foo
.quad bar

Avoid producing it. Fixes PR9951.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131687 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 22:05:56 +00:00
Rafael Espindola
a6f2678f08 Misc code refactorings:
* Remove unnecessary arguments now that ForceExpAbs is a method.
* Use ForceExpAbs in EmitAbsValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131683 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 21:40:34 +00:00
Charles Davis
61558aaf4f Implement the EndProlog Win64 EH method on the base MCStreamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131679 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 21:24:54 +00:00
Charles Davis
c3b162857a Implement the Win64 EH prolog instruction methods on the base MCStreamer.
I had to change the API slightly to avoid overloading issues.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131666 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 19:35:55 +00:00
Charles Davis
440596ffe5 Turns out GAS does have Win64 EH directives. (It also supports WinCE EH.) Make
ours compatible with GAS.

In retrospect, I should have emailed binutils about this earlier. Thanks to
Kai Tietz for pointing out that GAS already had SEH directives.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131652 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 17:46:39 +00:00
Charles Davis
91d9a1c0f7 Implement the StartChained and EndChained Win64 EH methods on MCStreamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131629 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 04:04:13 +00:00
Charles Davis
0855bc5b97 Implement the StartProc and EndProc Win64 EH methods on the base MCStreamer.
Based largely on Rafael Espindola's work on CFI. Other methods soon to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131623 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19 02:49:00 +00:00
Charles Davis
f07090134d Add some more Win64 EH directives:
- StartChained and EndChained delimit a chained unwind area, which can contain
  additional operations to be undone if an exception occurs inside of it.
- UnwindOnly declares that this function doesn't handle any exceptions. If it
  has a handler, it's an unwind handler instead of an exception handler.
- Lsda declares the location and size of the LSDA, which in the Win64 EH
  scheme is kept inside the UNWIND_INFO struct. Windows itself ignores the
  LSDA; it's used by the Language-Specific Handler (the "Personality Function"
  from DWARF).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131572 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-18 20:54:10 +00:00
Charles Davis
9c77398d1c While thinking about how to know where the functions' boundaries are for
the purposes of the Win64 EH tables, I realized we had no way to tell where
the function ends. (MASM bounds functions with PROC and ENDP keywords.)
Add a directive to delimit the end of the function, and rename the 'frame'
directive to more accurately reflect its duality with the new directive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131522 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-18 04:47:22 +00:00
Charles Davis
cacdc4fc41 Add a method I forgot in the last commit. Don't worry, this one passed
self-host :).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131421 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-16 21:13:58 +00:00
Charles Davis
baaa320168 Fix copy-pasto.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131384 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-15 17:28:27 +00:00
Charles Davis
ff96a12db6 Add stub methods to MCStreamer for emitting Win64 exception-handling
information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131382 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-15 17:20:01 +00:00
Rafael Espindola
713c4bfc36 Add CFIStartSections to the asm printer. Add an assert that at least
one of the sections is created.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131124 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10 13:39:48 +00:00
Rafael Espindola
40a7dbbeff Add support for producing .deubg_frame sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131121 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10 03:54:12 +00:00
Rafael Espindola
c25dad8750 Factor some code into a new EmitFrames method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131119 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10 03:14:15 +00:00
Rafael Espindola
f9efd83166 Parsing and plumbing for .cfi_sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131117 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10 01:10:18 +00:00
Rafael Espindola
debd7e4e8b Simplify the handling of pcrel relocations on ELF. Now we do the right thing
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
2011-05-01 03:50:49 +00:00
Rafael Espindola
a37bd1d02c Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130585 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 03:21:04 +00:00
Rafael Espindola
8bca4106df Mark the EH symbol global or weak if the corresponding function is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130397 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28 12:50:37 +00:00
Rafael Espindola
ed708f9c1f Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last
non private symbol. This will be use for handling

foo:
  .cfi_startproc
  ...

On OS X where we have to create a foo.eh symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130305 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-27 15:21:19 +00:00
Devang Patel
3f3bf9387b Reduce clutter in asm output. Do not emit source location as comment for each instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129715 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-18 20:26:49 +00:00
Rafael Espindola
066c2f495a Be consistent about being virtual and returning void in the cfi methods.
Implement the ones that were missing in the asm streamer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129413 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12 23:59:07 +00:00
Rafael Espindola
5d7dcd3335 Remove LastOffset from the asm parser.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129378 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12 18:53:30 +00:00
Rafael Espindola
25f492e778 Fix the case of a .cfi_rel_offset before any .cfi_def_cfa_offset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129362 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12 16:12:03 +00:00
Rafael Espindola
c57543964d Implement .cfi_same_value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129361 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12 15:31:05 +00:00
Anton Korobeynikov
57caad7a33 Preliminary support for ARM frame save directives emission via MI flags.
This is just very first approximation how the stuff should be done
(e.g. ARM-only for now). More to follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127101 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-05 18:43:32 +00:00
Anton Korobeynikov
b5e16af9ea Some first rudimentary support for ARM EHABI: print exception table in "text mode".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127099 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-05 18:43:15 +00:00
Joerg Sonnenberger
7d0805dcb8 Use a vector of pairs to implement the section stack, not two
independent vectors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126099 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21 01:07:42 +00:00