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243 Commits

Author SHA1 Message Date
Charles Davis
925eab3fd7 Implement the Win64 EH prolog instruction methods on the base MCStreamer. 
I had to change the API slightly to avoid overloading issues.

llvm-svn: 131666
 2011-05-19 19:35:55 +00:00
Charles Davis
bb99a68546 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.

llvm-svn: 131652
 2011-05-19 17:46:39 +00:00
Charles Davis
844da78338 Remove comments as Chris requested. 
llvm-svn: 131590
 2011-05-18 22:13:51 +00:00
Cameron Zwarich
e410478ca7 Fix an obvious typo in r131572. 
llvm-svn: 131579
 2011-05-18 21:29:07 +00:00
Charles Davis
48ea9389dc 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).

llvm-svn: 131572
 2011-05-18 20:54:10 +00:00
Charles Davis
2e7d0eef98 Implement the Win64 EH directive methods for the assembly language streamer. 
GAS has no such directives (not even mingw-w64 GAS has them), so I took
creative license with their names in assembly. I prefixed them all with
"w64_" to avoid namespace collisions, for example. If I discover that GAS
has taken a different approach, I'll change ours to match.

llvm-svn: 131525
 2011-05-18 04:58:05 +00:00
Rafael Espindola
e0b15205c1 sets bit 0 of the function address of thumb function in .symtab 
("T is 1 if the target symbol S has type STT_FUNC and the
symbol addresses a Thumb instruction ;it is 0 otherwise."
from "ELF for the ARM Architecture" 4.7.1.2)

Patch by Koan-Sin Tan!

llvm-svn: 131406
 2011-05-16 16:17:21 +00:00
Rafael Espindola
33cc7a8f74 Add CFIStartSections to the asm printer. Add an assert that at least 
one of the sections is created.

llvm-svn: 131124
 2011-05-10 13:39:48 +00:00
Rafael Espindola
3d5f7d1fc1 Factor some code into a new EmitFrames method. 
llvm-svn: 131119
 2011-05-10 03:14:15 +00:00
Rafael Espindola
eb5d0cb4f4 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637
 2011-05-01 04:49:54 +00:00
Rafael Espindola
2f2c3bf31f 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.

llvm-svn: 130634
 2011-05-01 03:50:49 +00:00
Rafael Espindola
886aa563be Revert the previous patch while I figure out how to make llvm-gcc 
less agressive about disabling cfi on linux :-(

llvm-svn: 130626
 2011-04-30 23:03:44 +00:00
Rafael Espindola
9455887b10 Enable CFI on OS X. 
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
Rafael Espindola
dfbd3e7412 Implement MCAsmStreamer::EmitEHSymAttributes. Doing this in the asm streamer 
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
Rafael Espindola
7901d3790e Add all the plumbing needed for MC to expand cfi to the old tables in 
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
Rafael Espindola
17e6a392af Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr. 
llvm-svn: 130585
 2011-04-30 03:21:04 +00:00
Rafael Espindola
c4e90a84c4 Implement MCAsmStreamer::EmitCFIDefCfa. 
llvm-svn: 130543
 2011-04-29 21:41:06 +00:00
Devang Patel
acce3eb6b2 Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries. 
PR 9810

llvm-svn: 130518
 2011-04-29 18:00:54 +00:00
Rafael Espindola
133c684456 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.

llvm-svn: 130305
 2011-04-27 15:21:19 +00:00
Rafael Espindola
856ed14418 Remove unused argument. 
llvm-svn: 129955
 2011-04-21 23:39:26 +00:00
Devang Patel
7220c1a021 Reduce clutter in asm output. Do not emit source location as comment for each instruction. 
llvm-svn: 129715
 2011-04-18 20:26:49 +00:00
Rafael Espindola
63f8a9ad72 Be consistent about being virtual and returning void in the cfi methods. 
Implement the ones that were missing in the asm streamer.

llvm-svn: 129413
 2011-04-12 23:59:07 +00:00
NAKAMURA Takumi
dcd45bec2e Fix whitespace. 
llvm-svn: 128370
 2011-03-27 01:44:40 +00:00
Anton Korobeynikov
917ca94111 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.

llvm-svn: 127101
 2011-03-05 18:43:32 +00:00
Anton Korobeynikov
62e48532b9 Some first rudimentary support for ARM EHABI: print exception table in "text mode". 
llvm-svn: 127099
 2011-03-05 18:43:15 +00:00
Cameron Zwarich
974208a607 Roll out r126425 and r126450 to see if it fixes the failures on the buildbots. 
llvm-svn: 126488
 2011-02-25 16:30:32 +00:00
Devang Patel
f2b2417c2c Enable DebugInfo support for COFF object files. 
Patch by Nathan Jeffords!

llvm-svn: 126425
 2011-02-24 21:04:00 +00:00
Rafael Espindola
b59fdeb3de Add support for pushsection and popsection. Patch by Joerg Sonnenberger. 
llvm-svn: 125629
 2011-02-16 01:08:29 +00:00
Anton Korobeynikov
aeeec825cd Use common style for .cfi directives 
llvm-svn: 123472
 2011-01-14 21:57:39 +00:00
Evan Cheng
579f2b17bf Add comment about Thumb2 fixup comments being completely bogus. 
llvm-svn: 123411
 2011-01-13 23:27:39 +00:00
Evan Cheng
cf9949ddbd 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. 
llvm-svn: 123403
 2011-01-13 21:45:26 +00:00
Rafael Espindola
12c30aed07 Add support for .cfi_lsda. 
llvm-svn: 122584
 2010-12-27 15:56:22 +00:00
Rafael Espindola
e7e67fce10 Add support for the same encodings of the personality function that gnu as 
supports.

llvm-svn: 122577
 2010-12-27 00:36:05 +00:00
Nick Lewycky
c85935836b Add missing standard headers. Patch by Joerg Sonnenberger! 
llvm-svn: 122193
 2010-12-19 20:43:38 +00:00
Daniel Dunbar
fc14f1e5f6 MC: Move target specific fixup info descriptors to TargetAsmBackend instead of 
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
Daniel Dunbar
8ab9be2005 MC: Make TargetAsmBackend available to the AsmStreamer. 
- Treaty talks on the non-proliferation of MC objects broke down.

llvm-svn: 121949
 2010-12-16 03:05:59 +00:00
Rafael Espindola
0e665e502d Fixed version of 121434 with no new memory leaks. 
llvm-svn: 121471
 2010-12-10 07:39:47 +00:00
Rafael Espindola
011e168728 Revert my previous patch to make the valgrind bots happy. 
llvm-svn: 121461
 2010-12-10 04:01:09 +00:00
Rafael Espindola
03ad1e8f1f Initial support for the cfi directives. This is just enough to get 
f:
        .cfi_startproc
        nop
        .cfi_endproc

assembled (on ELF).

llvm-svn: 121434
 2010-12-09 23:48:29 +00:00
Rafael Espindola
3e954d16f4 Second try at making direct object emission produce the same results 
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
Rafael Espindola
9215947c83 There are two reasons why we might want to use 
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
Rafael Espindola
50b6170457 Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid 
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
Rafael Espindola
ec560cdae3 Make EmitIntValue more efficient and more like what we do for leb128. The 
difference is much smaller (about 0.3s) but significant.

llvm-svn: 120787
 2010-12-03 02:54:21 +00:00
Rafael Espindola
dc103b1755 Do with uleb the same trick we now do with dwarf line/address advances. This 
avoids creating leb128 fragments and speeds up the test in PR8711 to 33s.

llvm-svn: 120774
 2010-12-03 01:19:49 +00:00
Rafael Espindola
3e119b0bb4 Try to resolve symbol differences early, and if successful create a plain 
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
Devang Patel
77a1457f1a 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. 
llvm-svn: 120760
 2010-12-03 00:10:48 +00:00
Devang Patel
822facd787 Use set directive for StartMinusEndExpr. 
This is a fix for llvm-gcc-i386-darwin9 buildbot failure.

llvm-svn: 120742
 2010-12-02 21:32:30 +00:00
Devang Patel
525de51e78 If tehre are not any line entry then do not try to emit .debug_line section. 
llvm-svn: 120637
 2010-12-02 01:17:51 +00:00
Rafael Espindola
d5f118a011 Make EmitIntValue non virtual. 
llvm-svn: 120271
 2010-11-28 23:22:44 +00:00
Rafael Espindola
e20c3d7c26 Add basic CFI methods to the streamer interface. 
llvm-svn: 119972
 2010-11-22 14:27:24 +00:00
Kevin Enderby
214e641d8d Added support for the Mach-O .symbol_resolver directive. rdar://8673046 
llvm-svn: 119816
 2010-11-19 18:39:33 +00:00
Rafael Espindola
921ef0c471 Fix llvm-gcc boostrap on OS X by avoiding printing sleb and uleb when 
possible.

llvm-svn: 119785
 2010-11-19 04:10:13 +00:00
Rafael Espindola
b33e5e07e1 Change some methods in MCDwarf.cpp to be able to handle an arbitrary 
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
Rafael Espindola
283e6bd938 Add .loc methods to the streamer. 
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
Chris Lattner
3b5f2a871a correct the fixup comment printer to work on big endian platforms. 
llvm-svn: 119122
 2010-11-15 05:56:19 +00:00
Rafael Espindola
d2ff64abae Fix warning and add support for printing gnu_unique_object. 
llvm-svn: 118981
 2010-11-13 04:55:06 +00:00
Jim Grosbach
a98b9ba916 Add '.code 32' assembler directive to MC streamers. 
llvm-svn: 118309
 2010-11-05 22:40:09 +00:00
Jim Grosbach
bbef2c5fcc MC'ize the '.code 16' and '.thumb_func' ARM directives. 
llvm-svn: 118301
 2010-11-05 22:08:08 +00:00
Rafael Espindola
3f4a79b243 Add 118023 back, but with proper spelling for .uleb128/.sleb128. 
llvm-svn: 118254
 2010-11-04 18:17:08 +00:00
Rafael Espindola
1db6a21aff Add support for expressions in .sleb/.uleb directives. 
llvm-svn: 118023
 2010-11-02 17:22:24 +00:00
Rafael Espindola
7a38cb0144 Implement .weakref. 
llvm-svn: 117911
 2010-11-01 14:28:48 +00:00
Jason W Kim
7822e6aab5 Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile() 
Small test for sanity check of resulting ARM .s file.
Tested against -r115129.

llvm-svn: 115133
 2010-09-30 02:45:56 +00:00
Chris Lattner
04d9e1641f allow target-specific label suffixes, patch by Yuri Gribov! 
llvm-svn: 114592
 2010-09-22 22:19:53 +00:00
Jim Grosbach
8899a330c7 grammar tweakage 
llvm-svn: 114561
 2010-09-22 18:18:30 +00:00
Jim Grosbach
f8956463a7 remove trailing whitespace 
llvm-svn: 114560
 2010-09-22 18:16:55 +00:00
Rafael Espindola
8a987c002e Add a InitSections method to the streamer interface. 
The ELF implementation now creates text, data and bss to match the gnu as
behavior.

The text streamer still has the old MachO specific behavior since
the testsuite checks that it will error when a directive is given
before a setting the current section for example.

A nice benefit is that -n is not required anymore when producing
ELF files.

llvm-svn: 114027
 2010-09-15 21:48:40 +00:00
Benjamin Kramer
dd16ed1618 Add AsmParser support for the ELF .previous directive. Patch by Roman Divacky. 
llvm-svn: 112849
 2010-09-02 18:53:37 +00:00
Benjamin Kramer
d1340209a1 Plug the remaining MC leaks by giving MCObjectStreamer/MCAsmStreamer ownership of the TargetAsmBackend and the MCCodeEmitter. 
llvm-svn: 109767
 2010-07-29 17:48:06 +00:00
Kevin Enderby
9bf8ee521c Added the darwin .weak_def_can_be_hidden directive. 
llvm-svn: 107886
 2010-07-08 17:22:42 +00:00
Chris Lattner
dbea6d7acb "This is just a cosmetic change in MCAsmStreamer.cpp/EmitSymbolAttribute: all attributes have now a \t before and after, as done for '.type'. 
This makes the output look consistent, as well as help some third party assemblers expecting the attributes to be in the second column."

Patch by Arnaud de Grandmaison!

llvm-svn: 106469
 2010-06-21 20:35:01 +00:00
Dan Gohman
940f8f3947 Don't call flush() at a library level which isn't checking for errors 
and doesn't know where the output is going.

llvm-svn: 105274
 2010-06-01 16:31:34 +00:00
Daniel Dunbar
f50c283a31 MC: Change MCInst::dump_pretty to not include a trailing newline. 
llvm-svn: 104696
 2010-05-26 15:18:13 +00:00
Eric Christopher
4a9013f115 Make EmitTBSSSymbol take a section argument so that we can find it later. 
Fix up callers and users.

llvm-svn: 104057
 2010-05-18 21:16:04 +00:00
Eric Christopher
950f0d7892 Assume that we'll handle mangling the symbols earlier and just put the 
symbol to the file as we have it.  Simplifies out tbss handling.

llvm-svn: 103928
 2010-05-17 02:13:02 +00:00
Eric Christopher
ebea91f168 Add AsmParser support for darwin tbss directive. 
Nothing uses this yet.

llvm-svn: 103757
 2010-05-14 01:50:28 +00:00
Chris Lattner
568058ef71 break coff symbol definition stuff out into proper MCStreamer callbacks, 
patch by Nathan Jeffords!

llvm-svn: 103346
 2010-05-08 19:54:22 +00:00
Daniel Dunbar
9a3d46162f MC/Mach-O: Mark absolute variable's appropriately, and add Mach-O support for 
writing them.
 - <rdar://problem/7885351> integrated assembler broken for i386 objc code

llvm-svn: 103112
 2010-05-05 19:01:05 +00:00
Daniel Dunbar
139bd85642 MC: Reject attempts to define a variable symbol. 
llvm-svn: 103111
 2010-05-05 19:01:00 +00:00
Daniel Dunbar
d2ac9dc48b MC: Rename MCSymbol::{g,s}etValue -> MCSymbol::{g,s}etVariableValue. 
llvm-svn: 103095
 2010-05-05 17:41:00 +00:00
Chris Lattner
8fb6be1886 fix an ugly wart in the MCInstPrinter api where the 
raw_ostream to print an instruction to had to be specified
at MCInstPrinter construction time instead of being able
to pick at each call to printInstruction.

llvm-svn: 100307
 2010-04-04 05:04:31 +00:00
Chris Lattner
fad8688f5d allow attaching comments to raw text. 
llvm-svn: 100292
 2010-04-03 22:06:56 +00:00
Chris Lattner
4e8e791414 add a new EmitInlineAsm function to asmprinter to handle inline asm. 
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
Daniel Dunbar
38fd48e06b MCInst: Add ::dump_pretty. 
llvm-svn: 99216
 2010-03-22 21:49:34 +00:00
Chris Lattner
32452cf12f fix an MCInstPrinter leak that jyasskin pointed out: 
createAsmStreamer now takes ownership of the instprinter.

llvm-svn: 98939
 2010-03-19 05:48:53 +00:00
Chris Lattner
f4dce6a6d8 remove MAI argument from createAsmStreamer since it 
can get it from the context now.

llvm-svn: 98361
 2010-03-12 18:28:53 +00:00
Chris Lattner
405e4a1d63 genericize MCAsmStreamer::EmitCodeAlignment to support other targets 
so that it doesn't break them when the code generator starts using it.

llvm-svn: 96966
 2010-02-23 18:44:31 +00:00
Kevin Enderby
c11390f758 This is the first patch to put the needed bits in place to eventually allow code 
to be aligned with optimal nops.  This patch does not change any functionality
and when the compiler is changed to use EmitCodeAlignment() it should also not
change the resulting output.  Once the compiler change is made and everything
looks good the next patch with the table of optimal X86 nops will be added to
WriteNopData() changing the output.  There are many FIXMEs in this patch which
will be removed when we have better target hooks (coming soon I hear).

llvm-svn: 96963
 2010-02-23 18:26:34 +00:00
Chris Lattner
144a1b7a24 add a new MCInstPrinter::getOpcodeName interface, when it is 
implemented, llvm-mc --show-inst now uses it to print the
instruction opcode as well as the number.

llvm-svn: 95929
 2010-02-11 22:39:10 +00:00
Chris Lattner
b82b965968 make getFixupKindInfo return a const reference, allowing 
the tables to be const.  Teach MCCodeEmitter to handle
the target-indep kinds so that we don't crash on them.

llvm-svn: 95924
 2010-02-11 21:27:18 +00:00
Daniel Dunbar
d2035fb242 MC: Switch MCFixup to just hold an MCExpr pointer instead of index into the 
MCInst it came from.

llvm-svn: 95767
 2010-02-10 04:47:08 +00:00
Daniel Dunbar
75df429af0 llvm-mc: Remove --show-fixups and always show as part of --show-encoding. 
Also, fix a silly memory leak.

llvm-svn: 95752
 2010-02-10 01:41:14 +00:00
Chris Lattner
477ce1773c daniel *really* likes fixups! 
llvm-svn: 95742
 2010-02-10 01:05:28 +00:00
Chris Lattner
ca01d26903 Add ability for MCInstPrinters to add comments for instructions. 
Enhance the x86 backend to show the hex values of immediates in
comments when they are large.  For example:

        movl    $1072693248, 4(%esp)    ## imm = 0x3FF00000

llvm-svn: 95728
 2010-02-10 00:10:18 +00:00
Daniel Dunbar
1b050afd4e llvm-mc: Add --show-fixups option, for displaying the instruction fixup information in the asm comments. 
llvm-svn: 95710
 2010-02-09 23:00:14 +00:00
Daniel Dunbar
ddfda89472 MC: First cut at MCFixup, for getting fixup/relocation information out of an MCCodeEmitter. 
llvm-svn: 95708
 2010-02-09 22:59:55 +00:00
Chris Lattner
18fed3c934 make -show-inst be formatted a bit nicer. Before: 
movl	$3735928559, a          ## inst: <MCInst 1273 <MCOperand Reg:0> <MCOperand Imm:1> <MCOperand Reg:0> <MCOperand Expr:(a)> <MCOperand Reg:0> <MCOperand Expr:(3735928559)>>

after:

	movl	$3735928559, a          ## <MCInst #1273
                                        ##   <MCOperand Reg:0>
                                        ##   <MCOperand Imm:1>
                                        ##   <MCOperand Reg:0>
                                        ##   <MCOperand Expr:(a)>
                                        ##   <MCOperand Reg:0>
                                        ##   <MCOperand Expr:(3735928559)>>

llvm-svn: 95637
 2010-02-09 00:54:51 +00:00
Chris Lattner
b79cdb101f print encodings like this: 
pslld	69, %mm3                ## encoding: [0x0f,0xf2,0x1c,0x25,0x45,0x00,0x00,0x00]

instead of like this:
	pslld	69, %mm3                ## encoding: [0x0f,0xf2,0x1c,0x25,0x45,0000,0000,0000]

this only affects 0.

llvm-svn: 95441
 2010-02-05 22:20:08 +00:00
Dan Gohman
05d47a0cf5 Use a tab instead of space after .type, for consistency. 
llvm-svn: 95272
 2010-02-04 01:42:13 +00:00
Daniel Dunbar
d997cd69cd llvm-mc: Add --show-inst option, for showing the MCInst inline with the assembly 
output.

llvm-svn: 95227
 2010-02-03 18:18:30 +00:00
Chris Lattner
6fe16de58e print instruction encodings with the existing comment facilities, 
so that llvm-mc -show-encoding prints like this:

	hlt                                                 ## encoding: [0xf4]

instead of like this:

	hlt
                     # encoding: [0xf4]

llvm-svn: 95207
 2010-02-03 06:28:13 +00:00