750cb61553
GCC uses a different encoding of pointers in the FDE when using
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-fno-dwarf2-cfi-asm. Implement the same behavior.
llvm-svn: 130637
2011-05-01 04:49:54 +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
b7c2286055
Revert the previous patch while I figure out how to make llvm-gcc
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less agressive about disabling cfi on linux :-(
llvm-svn: 130626
2011-04-30 23:03:44 +00:00
5265bc483e
Enable CFI on OS X.
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Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.
The only two differences I know of are:
* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.
llvm-svn: 130623
2011-04-30 22:29:54 +00:00
bde52bca69
Implement MCAsmStreamer::EmitEHSymAttributes. Doing this in the asm streamer
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is a bit ugly, but doing it on the base MCStreamer would be redundant
with the object streamer which does it using SD.
llvm-svn: 130611
2011-04-30 16:34:57 +00:00
a3181d12c6
Add all the plumbing needed for MC to expand cfi to the old tables in
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the final assembly. It is the same technique used when targeting
assemblers that don't support .loc.
llvm-svn: 130587
2011-04-30 03:44:37 +00:00
1d1eced025
Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
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llvm-svn: 130585
2011-04-30 03:21:04 +00:00
6c961e1b75
Implement MCAsmStreamer::EmitCFIDefCfa.
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llvm-svn: 130543
2011-04-29 21:41:06 +00:00
124ae13421
Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries.
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PR 9810
llvm-svn: 130518
2011-04-29 18:00:54 +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
6aea59268a
Remove unused argument.
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llvm-svn: 129955
2011-04-21 23:39:26 +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
af66980d8a
Fix whitespace.
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llvm-svn: 128370
2011-03-27 01:44:40 +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".
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llvm-svn: 127099
2011-03-05 18:43:15 +00:00
fcf51fd298
Roll out r126425 and r126450 to see if it fixes the failures on the buildbots.
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llvm-svn: 126488
2011-02-25 16:30:32 +00:00
b037383a35
Enable DebugInfo support for COFF object files.
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Patch by Nathan Jeffords!
llvm-svn: 126425
2011-02-24 21:04:00 +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
e2bea1c82e
Use common style for .cfi directives
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llvm-svn: 123472
2011-01-14 21:57:39 +00:00
52899a9c34
Add comment about Thumb2 fixup comments being completely bogus.
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llvm-svn: 123411
2011-01-13 23:27:39 +00:00
0447d30939
Relax an assertion. On archs like ARM, an immediate field may be scattered. So it's possible for some bits of every 8 bits to be encoded already, and the rest still needs to be fixed up.
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llvm-svn: 123403
2011-01-13 21:45:26 +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
0de20af7ba
Add missing standard headers. Patch by Joerg Sonnenberger!
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llvm-svn: 122193
2010-12-19 20:43:38 +00:00
0c9d9fdd81
MC: Move target specific fixup info descriptors to TargetAsmBackend instead of
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the MCCodeEmitter, which seems like a better organization.
- Also, cleaned up some magic constants while in the area.
llvm-svn: 121953
2010-12-16 03:20:06 +00:00
ecd0c8a557
MC: Make TargetAsmBackend available to the AsmStreamer.
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- Treaty talks on the non-proliferation of MC objects broke down.
llvm-svn: 121949
2010-12-16 03:05:59 +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
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
1c8ac8f027
There are two reasons why we might want to use
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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.
llvm-svn: 120889
2010-12-04 03:21:47 +00:00
1048e75fb9
Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid
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doing that if the target is darwin10 or newer.
This fixes
*) Direct object emission was producing objects without the workaround on
darwin9.
*) Assembly printing was producing objects with the workaround on linux.
llvm-svn: 120866
2010-12-04 00:31:13 +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
5eed2e63f8
It may not be an option to skip .debug_line if there are file reference in already emitted debug info. So, for now, emit dummy line table entry to make older linker and assemblers happy. This is not a new behavior, original AsmPrinter emitted similar line table entries.
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llvm-svn: 120760
2010-12-03 00:10:48 +00:00
8cabd938ed
Use set directive for StartMinusEndExpr.
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This is a fix for llvm-gcc-i386-darwin9 buildbot failure.
llvm-svn: 120742
2010-12-02 21:32:30 +00:00
87b9114f49
If tehre are not any line entry then do not try to emit .debug_line section.
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llvm-svn: 120637
2010-12-02 01:17:51 +00:00
e5e1f9ad0f
Make EmitIntValue non virtual.
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llvm-svn: 120271
2010-11-28 23:22:44 +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
8be14414f6
Added support for the Mach-O .symbol_resolver directive. rdar://8673046
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llvm-svn: 119816
2010-11-19 18:39:33 +00:00
92ca933f6e
Fix llvm-gcc boostrap on OS X by avoiding printing sleb and uleb when
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possible.
llvm-svn: 119785
2010-11-19 04:10:13 +00:00
b58867ccba
Change some methods in MCDwarf.cpp to be able to handle an arbitrary
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MCStreamer instead of just MCObjectStreamer. Address changes cannot
be as efficient as we have to use DW_LNE_set_addres, but at least
most of the logic is shared.
This will be used so that, with CodeGen still using EmitDwarfLocDirective,
llvm-gcc is able to produce debug_line sections without needing an
assembler that supports .loc.
llvm-svn: 119777
2010-11-19 02:26:16 +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
9e7d8c0313
correct the fixup comment printer to work on big endian platforms.
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llvm-svn: 119122
2010-11-15 05:56:19 +00:00
2d006b1ade
Fix warning and add support for printing gnu_unique_object.
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llvm-svn: 118981
2010-11-13 04:55:06 +00:00
cbdf7efe1c
Add '.code 32' assembler directive to MC streamers.
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llvm-svn: 118309
2010-11-05 22:40:09 +00:00
5a2c68d308
MC'ize the '.code 16' and '.thumb_func' ARM directives.
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llvm-svn: 118301
2010-11-05 22:08:08 +00:00
38d0756b88
Add 118023 back, but with proper spelling for .uleb128/.sleb128.
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llvm-svn: 118254
2010-11-04 18:17:08 +00:00
Rafael Espindola