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64 Commits

Author SHA1 Message Date
Rafael Espindola 2ac8355ecd 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
Daniel Dunbar 7da045e59f X86/MC/Mach-O: Split out createX86MachObjectWriter(). 
llvm-svn: 122246
 2010-12-20 15:07:39 +00:00
Rafael Espindola 8396dd0893 Remove the MCObjectFormat class. 
llvm-svn: 122147
 2010-12-18 05:37:28 +00:00
Rafael Espindola fdaae0d16f Move some data to the TargetWriter. 
llvm-svn: 122134
 2010-12-18 03:27:34 +00:00
Rafael Espindola 625ccf8222 Relax push instructions. 
llvm-svn: 122121
 2010-12-18 01:01:34 +00:00
Rafael Espindola 6b5e56c2b1 Stub out explicit MCELFObjectTargetWriter interface. 
llvm-svn: 122067
 2010-12-17 17:45:22 +00:00
Rafael Espindola f0e24d426a Move createELFObjectWriter to its own header. 
llvm-svn: 122064
 2010-12-17 16:59:53 +00:00
Daniel Dunbar 2ee6c9b8c9 MC/Mach-O: On second thought, use a custom hook for enabling aggressive 
IsSymbolRefDifferenceFullyResolved, it turns out this does change behavior on
enough cases for x86-32 that I would rather wait a bit on it.
 - In practice, we will want to change this eventually because it only means we
   generate less relocations (it also eliminates the need for the horrible
   '.set' hack that Darwin requires in some places).

llvm-svn: 122042
 2010-12-17 05:50:29 +00:00
Daniel Dunbar d2867f13a0 MC/Target: Remove HasScatteredSymbols target hook variable, which has been 
superceded and was effectively dead.

llvm-svn: 122024
 2010-12-17 02:06:08 +00:00
Daniel Dunbar 03fcccbb47 MC/Mach-O: Lift some MachObjectWriter arguments into the target specific 
interface.

llvm-svn: 121981
 2010-12-16 17:21:02 +00:00
Daniel Dunbar 8888a9604d MC/Mach-O: Stub out explicit MCMachObjectTargetWriter interface. 
llvm-svn: 121973
 2010-12-16 16:09:19 +00:00
Daniel Dunbar 73b8713d7c MC/Mach-O: Move createMachObjectWriter into MCMachObjectWriter.h. 
llvm-svn: 121971
 2010-12-16 16:08:33 +00:00
Daniel Dunbar 0c9d9fdd81 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
Rafael Espindola 0a017a6db2 Fixed version of 121434 with no new memory leaks. 
llvm-svn: 121471
 2010-12-10 07:39:47 +00:00
Rafael Espindola a945a34c73 Revert my previous patch to make the valgrind bots happy. 
llvm-svn: 121461
 2010-12-10 04:01:09 +00:00
Rafael Espindola 56eb741237 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 0f30fec0bd Remove the instruction fragment to data fragment lowering since it was causing 
freed data to be read. I will open a bug to track it being reenabled.

llvm-svn: 121028
 2010-12-06 19:08:48 +00:00
Rafael Espindola 8a3a7923eb Define generic 1, 2 and 4 byte pc relative relocations. They are common 
and at least the 4 byte one will be needed to implement the .cfi_* directives.

llvm-svn: 120240
 2010-11-28 14:17:56 +00:00
Daniel Dunbar a5f50c16f7 MC/Mach-O: Switch to using MachOFormat.h. 
- I'm leaving MachO.h, because I believe it has external consumers, but I would really like to eliminate it (we have stylistic disagreements with one another).

llvm-svn: 120187
 2010-11-27 04:38:36 +00:00
Rafael Espindola bf4a4e4ad9 Remove the unused TheTarget member. 
llvm-svn: 120168
 2010-11-26 04:24:21 +00:00
Rafael Espindola 7c2acd022e Use multiple 0x66 prefixes so that all nops up to 15 bytes are a single instruction. 
llvm-svn: 120147
 2010-11-25 17:14:16 +00:00
Rafael Espindola 7a2cd8b540 make isVirtualSection a virtual method on MCSection. Chris' suggestion. 
llvm-svn: 119547
 2010-11-17 20:03:54 +00:00
Rafael Espindola d1993eb2a4 Change the 11 byte nop to be a single instruction. 
llvm-svn: 119286
 2010-11-15 23:10:30 +00:00
Daniel Dunbar fe0c28f4db MC: Simplify Mach-O and ELF object writer implementations. 
- What was I thinking?????

llvm-svn: 118992
 2010-11-13 07:33:40 +00:00
Jim Grosbach 46c2acbcb4 Allow targets to specify the MachO CPUType/CPUSubtype information. 
llvm-svn: 118288
 2010-11-05 18:48:58 +00:00
Rafael Espindola e8ae98817a Implement some relaxations for arithmetic instructions. The limitation 
on RIP relative relocations looks artificial, but this is a superset of
what we were able to do before.

llvm-svn: 117364
 2010-10-26 14:09:12 +00:00
Rafael Espindola 800fd3533c Add X86::reloc_global_offset_table and use it to have a single place where 
we check for _GLOBAL_OFFSET_TABLE_.

llvm-svn: 117241
 2010-10-24 17:35:42 +00:00
Wesley Peck 1851090515 Making the e_machine configurable by the target backend in ELFObjectWriter. 
llvm-svn: 117099
 2010-10-22 15:52:49 +00:00
Rafael Espindola e3dc9e2ea1 Produce ELF::R_386_GOTPC relocations. 
llvm-svn: 116728
 2010-10-18 18:36:12 +00:00
Rafael Espindola 4262a22225 Add a MCObjectFormat class so that code common to all targets that use a 
single object format can be shared.

This also adds support for

mov zed+(bar-foo), %eax

on ELF and COFF targets.

llvm-svn: 116675
 2010-10-16 18:23:53 +00:00
Michael J. Spencer bee1f7f5ba Fix Whitespace. 
llvm-svn: 116173
 2010-10-10 22:04:20 +00:00
Kevin Enderby bad267fa05 Adds getPointerSize() to the AsmBackend which will be needed by the final patch 
for the dwarf .loc support to emit dwarf line number tables.

llvm-svn: 115153
 2010-09-30 16:38:07 +00:00
Rafael Espindola 70d6e0e0ff Correctly produce R_X86_64_32 or R_X86_64_32S. 
With this patch in

movq    $foo, foo(%rip)
foo:
.long   foo

We produce a R_X86_64_32S for the first relocation and R_X86_64_32 for the
second one.

llvm-svn: 115134
 2010-09-30 03:11:42 +00:00
Rafael Espindola 75d65b9a03 Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put 
symbols defined in merge sections in independent atoms.

llvm-svn: 114786
 2010-09-25 05:42:19 +00:00
Roman Divacky 3b727f55aa Make ELF OS ABI dependent on the OS from target triple. 
llvm-svn: 113508
 2010-09-09 17:57:50 +00:00
Michael J. Spencer 377aa20e6e MC: Add partial x86-64 support to COFF. 
llvm-svn: 111728
 2010-08-21 05:58:13 +00:00
Matt Fleming f751d856f0 Hookup ELF support for X86. 
llvm-svn: 111173
 2010-08-16 18:36:14 +00:00
Benjamin Kramer a53a4eefa6 Enable COFF writer on mingw32 and cygwin. 
llvm-svn: 110200
 2010-08-04 15:32:40 +00:00
Michael J. Spencer ed80f361b3 MC: Remove HasAbsolutizedSet from WindowsX86AsmBackend. 
llvm-svn: 109949
 2010-07-31 07:21:44 +00:00
Michael J. Spencer f8270bdb2d Make MC use Windows COFF on Windows and add tests. 
llvm-svn: 109494
 2010-07-27 06:46:15 +00:00
Chris Lattner 88c185617c have the mc lowering process handle a few tail call forms, lowering them to 
jumps where possible and turning the TAILCALL marker in the instruction
asm string into a proper comment.

This eliminates a FIXME and is on the path to finishing:
rdar://7639610 - eliminate encoding and asm info for TAILJMPd TAILJMPr TAILJMPn, etc.

However, I can't eliminate the encodings for these instructions because the JIT
still exists and has its own copy of the encoder, sigh.

llvm-svn: 107946
 2010-07-09 00:49:41 +00:00
Chris Lattner ac5881295c Implement the major chunk of PR7195: support for 'callw' 
in the integrated assembler.  Still some discussion to be
done.

llvm-svn: 107825
 2010-07-07 22:27:31 +00:00
Daniel Dunbar 7c8bd0fc98 MC: Change RelaxInstruction to only take the input and output instructions. 
llvm-svn: 104713
 2010-05-26 18:15:06 +00:00
Daniel Dunbar a19838e107 MC: Simplify MayNeedRelaxation to not provide the fixups, so we can query it 
before encoding.

llvm-svn: 104707
 2010-05-26 17:45:29 +00:00
Daniel Dunbar b34440a6a8 MC: Eliminate MCAsmFixup, replace with MCFixup. 
llvm-svn: 104699
 2010-05-26 15:18:56 +00:00
Daniel Dunbar 353a91ff76 MC: Use accessors for access to MCAsmFixup. 
llvm-svn: 104697
 2010-05-26 15:18:31 +00:00
Daniel Dunbar 3627af5da4 MC: Change MCInst::dump_pretty to not include a trailing newline. 
llvm-svn: 104696
 2010-05-26 15:18:13 +00:00
Matt Fleming 5abb6dd61e Split out the x86_32 an x86_64 ELF backends as they handle ELF 
differently. This will make adding ELF support easier in the long run.

llvm-svn: 104317
 2010-05-21 11:39:07 +00:00
Daniel Dunbar 52e37becf6 MC/X86: Add missing entry for TAILJMP_1 to getRelaxedOpcode(). 
llvm-svn: 104122
 2010-05-19 17:20:58 +00:00
Eric Christopher bf79238599 Add some section and constant support for darwin TLS. 
llvm-svn: 103974
 2010-05-17 21:02:07 +00:00