bc2daa0f93
Implement emission of all Win64 exception tables. Make the COFF streamer emit
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these tables.
llvm-svn: 131833
2011-05-22 04:15:07 +00:00
e636022b4d
Don't allow unaligned offsets and sizes in the Win64 EH directives.
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Also, fix threshold for 'Big' register saves.
llvm-svn: 131830
2011-05-22 00:56:20 +00:00
6879634efd
Don't allow .seh_handler and .seh_handlerdata directives inside chained
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unwind areas.
llvm-svn: 131795
2011-05-21 17:36:25 +00:00
8e8f59bdfb
A handler for a function in the Win64 EH scheme can be both an unwind handler
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and an exception handler. Handle that case.
Also, add an 'Emitted' member to the MCWin64EHUnwindInfo struct. It will be
needed later.
llvm-svn: 131791
2011-05-21 15:57:49 +00:00
54254008ba
Set the "LastFrameInst" field when streaming a .seh_setframe directive. This
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is needed for an upcoming patch.
llvm-svn: 131772
2011-05-21 00:09:04 +00:00
24b31b6b7d
"Implement" the HandlerData Win64 EH method in the base MCStreamer.
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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.
llvm-svn: 131734
2011-05-20 16:06:22 +00:00
1edfb17bc2
Looks like OS X assemblers (including MC) don't like
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foo:
bar = foo
.quad bar
Avoid producing it. Fixes PR9951.
llvm-svn: 131687
2011-05-19 22:05:56 +00:00
8e129296fe
Misc code refactorings:
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* Remove unnecessary arguments now that ForceExpAbs is a method.
* Use ForceExpAbs in EmitAbsValue.
llvm-svn: 131683
2011-05-19 21:40:34 +00:00
de745ba396
Implement the EndProlog Win64 EH method on the base MCStreamer.
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llvm-svn: 131679
2011-05-19 21:24:54 +00:00
7e6e8951af
Implement the Win64 EH prolog instruction methods on the base MCStreamer.
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I had to change the API slightly to avoid overloading issues.
llvm-svn: 131666
2011-05-19 19:35:55 +00:00
4cd8856704
Turns out GAS does have Win64 EH directives. (It also supports WinCE EH.) Make
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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.
llvm-svn: 131652
2011-05-19 17:46:39 +00:00
b4222589bf
Implement the StartChained and EndChained Win64 EH methods on MCStreamer.
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llvm-svn: 131629
2011-05-19 04:04:13 +00:00
d991ec4e68
Implement the StartProc and EndProc Win64 EH methods on the base MCStreamer.
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Based largely on Rafael Espindola's work on CFI. Other methods soon to follow.
llvm-svn: 131623
2011-05-19 02:49:00 +00:00
77e0610d7c
Add some more Win64 EH directives:
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- 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).
llvm-svn: 131572
2011-05-18 20:54:10 +00:00
384041d0dc
While thinking about how to know where the functions' boundaries are for
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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.
llvm-svn: 131522
2011-05-18 04:47:22 +00:00
2701815ed8
Add a method I forgot in the last commit. Don't worry, this one passed
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self-host :).
llvm-svn: 131421
2011-05-16 21:13:58 +00:00
2f10078ae7
Fix copy-pasto.
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llvm-svn: 131384
2011-05-15 17:28:27 +00:00
af18d07ed6
Add stub methods to MCStreamer for emitting Win64 exception-handling
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information.
llvm-svn: 131382
2011-05-15 17:20:01 +00:00
ec53aa9485
Add CFIStartSections to the asm printer. Add an assert that at least
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one of the sections is created.
llvm-svn: 131124
2011-05-10 13:39:48 +00:00
1ecb12fc57
Add support for producing .deubg_frame sections.
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llvm-svn: 131121
2011-05-10 03:54:12 +00:00
b6089d6cac
Factor some code into a new EmitFrames method.
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llvm-svn: 131119
2011-05-10 03:14:15 +00:00
74b101f3e3
Parsing and plumbing for .cfi_sections.
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llvm-svn: 131117
2011-05-10 01:10:18 +00:00
fd05785324
Simplify the handling of pcrel relocations on ELF. Now we do the right thing
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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.
llvm-svn: 130634
2011-05-01 03:50:49 +00:00
1d1eced025
Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
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llvm-svn: 130585
2011-04-30 03:21:04 +00:00
349c3298da
Mark the EH symbol global or weak if the corresponding function is.
...
llvm-svn: 130397
2011-04-28 12:50:37 +00:00
27c0c9bb87
Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last
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non private symbol. This will be use for handling
foo:
.cfi_startproc
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On OS X where we have to create a foo.eh symbol.
llvm-svn: 130305
2011-04-27 15:21:19 +00:00
17740e70d5
Reduce clutter in asm output. Do not emit source location as comment for each instruction.
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llvm-svn: 129715
2011-04-18 20:26:49 +00:00
539d96f01d
Be consistent about being virtual and returning void in the cfi methods.
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Implement the ones that were missing in the asm streamer.
llvm-svn: 129413
2011-04-12 23:59:07 +00:00
fd794affe5
Remove LastOffset from the asm parser.
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llvm-svn: 129378
2011-04-12 18:53:30 +00:00
1ec0f46169
Fix the case of a .cfi_rel_offset before any .cfi_def_cfa_offset.
...
llvm-svn: 129362
2011-04-12 16:12:03 +00:00
2e1c9d2188
Implement .cfi_same_value.
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llvm-svn: 129361
2011-04-12 15:31:05 +00:00
e7410dd0d5
Preliminary support for ARM frame save directives emission via MI flags.
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This is just very first approximation how the stuff should be done
(e.g. ARM-only for now). More to follow.
llvm-svn: 127101
2011-03-05 18:43:32 +00:00
a7ec2dcefd
Some first rudimentary support for ARM EHABI: print exception table in "text mode".
...
llvm-svn: 127099
2011-03-05 18:43:15 +00:00
eef2f9009d
Use a vector of pairs to implement the section stack, not two
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independent vectors.
llvm-svn: 126099
2011-02-21 01:07:42 +00:00
58ac6e1677
Add support for pushsection and popsection. Patch by Joerg Sonnenberger.
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llvm-svn: 125629
2011-02-16 01:08:29 +00:00
2ae93b2c9c
Remove second return.
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llvm-svn: 122616
2010-12-29 02:42:33 +00:00
290d71671e
Implement cfi_def_cfa. Also don't convert to dwarf reg numbers twice. Looks
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like 6 is a fixed point of that and so the previous tests were OK :-)
llvm-svn: 122614
2010-12-29 01:42:56 +00:00
426e68f793
Implement cfi_def_cfa_register.
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llvm-svn: 122612
2010-12-29 00:26:06 +00:00
86d347dd31
Initial .cfi_offset implementation.
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llvm-svn: 122611
2010-12-29 00:09:59 +00:00
85d91982ca
Implement .cfi_remember_state and .cfi_restore_state.
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llvm-svn: 122602
2010-12-28 18:36:23 +00:00
a75b87b55a
Start adding basic support for emitting the call frame instructions.
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llvm-svn: 122590
2010-12-28 04:15:37 +00:00
1de2dd0e5e
Add support for .cfi_lsda.
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llvm-svn: 122584
2010-12-27 15:56:22 +00:00
2ac8355ecd
Add support for the same encodings of the personality function that gnu as
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supports.
llvm-svn: 122577
2010-12-27 00:36:05 +00:00
a6cd2d821a
Rename NeedsSetToChangeDiffSize to HasAggressiveSymbolFolding which is a much
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better name and matches what is used in the MachO writer.
llvm-svn: 122443
2010-12-22 21:51:29 +00:00
f991d4f587
Better fix for opt build
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llvm-svn: 121910
2010-12-15 23:14:45 +00:00
15f96baa01
Fix opt -Werror build
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llvm-svn: 121904
2010-12-15 22:21:20 +00:00
f80f18a11a
Generalize an assert.
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llvm-svn: 121851
2010-12-15 07:12:24 +00:00
0a017a6db2
Fixed version of 121434 with no new memory leaks.
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llvm-svn: 121471
2010-12-10 07:39:47 +00:00
a945a34c73
Revert my previous patch to make the valgrind bots happy.
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llvm-svn: 121461
2010-12-10 04:01:09 +00:00
56eb741237
Initial support for the cfi directives. This is just enough to get
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f:
.cfi_startproc
nop
.cfi_endproc
assembled (on ELF).
llvm-svn: 121434
2010-12-09 23:48:29 +00:00
3ebe3defe3
Add assert to catch an attempt to emit .byte 256
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llvm-svn: 121402
2010-12-09 19:26:21 +00:00
44bbe36de6
Second try at making direct object emission produce the same results
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as llc + llvm-mc. This time ELF is not changed and I tested that llvm-gcc
bootstrap on darwin10 using darwin9's assembler and linker.
llvm-svn: 121006
2010-12-06 17:27:56 +00:00
dee3062373
Revert previous two patches while I try to find out how to make both
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linux and darwin assemblers happy :-(
llvm-svn: 121004
2010-12-06 15:35:15 +00:00
34a06a0802
Add an EmitAbsValue helper method and use it in cases where we want to be sure
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that no relocations are used (on MochO).
Fixes llc producing different output from llc + llvm-mc.
llvm-svn: 121000
2010-12-06 14:53:14 +00:00
4c70eeaf33
Make EmitIntValue more efficient and more like what we do for leb128. The
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difference is much smaller (about 0.3s) but significant.
llvm-svn: 120787
2010-12-03 02:54:21 +00:00
675fbb2ad1
Do with uleb the same trick we now do with dwarf line/address advances. This
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avoids creating leb128 fragments and speeds up the test in PR8711 to 33s.
llvm-svn: 120774
2010-12-03 01:19:49 +00:00
57ab708bdd
Try to resolve symbol differences early, and if successful create a plain
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data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.
llvm-svn: 120767
2010-12-03 00:55:40 +00:00
b746531c2c
Avoid code duplication in the many unsupported EmitGPRel32Value implementations.
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llvm-svn: 120243
2010-11-28 15:09:24 +00:00
3c227b0b89
Add basic CFI methods to the streamer interface.
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llvm-svn: 119972
2010-11-22 14:27:24 +00:00
c653a895c8
Add .loc methods to the streamer.
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Next: Add support for the !HasDotLocAndDotFile case to the MCAsmStreamer
and then switch codegen to use it.
llvm-svn: 119384
2010-11-16 21:20:32 +00:00
5e874982f2
Add support for expressions in .sleb/.uleb directives.
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llvm-svn: 118023
2010-11-02 17:22:24 +00:00
1614597873
Implement .weakref.
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llvm-svn: 117911
2010-11-01 14:28:48 +00:00
e46564a4a8
This is the last major patch to implement support for the .loc directive
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and output the dwarf line number tables. This contains the code to emit and
encode the dwarf line tables from the previously gathered information in the
MCLineSection objects. This contains all the details to encode the line and
address deltas into the dwarf line table.
To do this an MCDwarfLineAddrFragment has been added.
Also this moves the interface code out of Mach-O streamer into
MCDwarf so it should be useable by other object file formats.
There is now one call to be made from an MCObjectStreamer
EmitInstruction() method:
MCLineEntry::Make(this, getCurrentSection());
to create a line entry after each instruction is assembled.
And one call call to be made from an MCObjectStreamer Finish() method:
MCDwarfFileTable::Emit(this, DwarfLineSection);
when getContext().hasDwarfFiles() is true and is passed a object file specific
MCSection where to emit the dwarf file and the line tables.
This appears to now be correct for 32-bit targets, at least x86. But the
relocation entries for 64-bit Darwin needs some further work which is next
up to work on. So for now the 64-bit Mach-O target does not output the
dwarf file and line tables.
llvm-svn: 115157
2010-09-30 16:52:03 +00:00
e39017cb97
Add AsmParser support for the ELF .previous directive. Patch by Roman Divacky.
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llvm-svn: 112849
2010-09-02 18:53:37 +00:00
2ed9f4bd39
_[A-Z] identifiers are reserved for the implementation.
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llvm-svn: 108682
2010-07-19 06:26:19 +00:00
141791c6d1
Grammar fix. This is a test commit.
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llvm-svn: 104264
2010-05-20 19:45:09 +00:00
1716721df1
add a twine form of MCStreamer::EmitRawText, and mc'ize
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a few more things in AsmPrinter.cpp.
llvm-svn: 100294
2010-04-03 22:12:35 +00:00
6ec72d2e8f
add <cstdlib> header for abort() on linux builders.
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llvm-svn: 100290
2010-04-03 21:48:59 +00:00
8a87fb7633
add a new EmitInlineAsm function to asmprinter to handle inline asm.
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If we have an MCAsmStreamer, we continue to emit asm textually,
otherwise we (currently) emit an error to errs and ignore it.
llvm-svn: 100289
2010-04-03 21:35:55 +00:00
b14490d912
add a EmitSymbolValue convenience method to MCStreamer.
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llvm-svn: 98017
2010-03-09 00:39:24 +00:00
8fa0e35f97
add a new MCAsmStreamer::GetCommentOS method to simplify stuff
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that doesn't want to use twines.
llvm-svn: 94199
2010-01-22 19:17:48 +00:00
dc50e5d128
add a new EmitIntValue method that MCStreamer impls can optionally define
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and that clients can use.
llvm-svn: 93923
2010-01-19 22:03:38 +00:00
c35681b298
Generalize mcasmstreamer data emission APIs to take an address space
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identifier. There is no way to work around it.
llvm-svn: 93896
2010-01-19 19:46:13 +00:00
0c65fd4902
add a "MCStreamer::EmitFill" method, and move the default implementation
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(which just iteratively emits bytes) to MCStreamer.
llvm-svn: 93888
2010-01-19 18:45:47 +00:00
0adae25ec1
Make AsmStreamer maintain a notion of the current section, pushing it up from the
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MCAsmStreamer. Based on this, eliminate the current section from AsmPrinter.
While I'm at it, clean up the last of the horrible "switch to null section" stuff
and add an assert. This change is in preparation for completely eliminating
asmprinter::switchtosection.
llvm-svn: 79324
2009-08-18 06:15:16 +00:00
9faf273fc4
Start MCAsmStreamer implementation.
...
llvm-svn: 74044
2009-06-24 01:03:06 +00:00
Charles Davis