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47 Commits

Author SHA1 Message Date
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
Daniel Dunbar ba2f4c3884 MC/Mach-O/x86_64: Add a new hook for checking whether a particular section can 
be diced into atoms, and adjust getAtom() to take this into account.
 - This fixes relocations to symbols in fixed size literal sections, for
   example.

llvm-svn: 103532
 2010-05-12 00:38:17 +00:00
Daniel Dunbar 358b29c855 MC/X86: Error out if we see a non-constant FK_Data_1 or FK_Data_2 fixup, since 
we don't currently support relaxing them.

llvm-svn: 103195
 2010-05-06 20:34:01 +00:00
Chris Lattner 2104b8d36e rename llvm::llvm_report_error -> llvm::report_fatal_error 
llvm-svn: 100709
 2010-04-07 22:58:41 +00:00
Daniel Dunbar 86face8333 MC: Add TargetAsmBackend::MayNeedRelaxation, for checking whether a particular instruction + fixups might need relaxation. 
llvm-svn: 99249
 2010-03-23 03:13:05 +00:00
Daniel Dunbar a9ae3ae698 MC: Add TargetAsmBackend::WriteNopData and use to eliminate some target dependencies in MCMachOStreamer and MCAssembler. 
llvm-svn: 99248
 2010-03-23 02:36:58 +00:00
Daniel Dunbar e0c43577c1 MC: Add TargetAsmBackend::RelaxInstruction callback, and custom X86 implementation. 
llvm-svn: 99245
 2010-03-23 01:39:09 +00:00
Daniel Dunbar 4d7c8645fd MC: Add TargetAsmBackend::createObjectWriter. 
- MCAssembler is now object-file independent, although we will surely need more work to fully support ELF/COFF.

llvm-svn: 98955
 2010-03-19 10:43:26 +00:00
Daniel Dunbar c5084cccc8 MC: Add TargetAsmBackend::isVirtualSection hook. 
llvm-svn: 98950
 2010-03-19 09:29:03 +00:00
Daniel Dunbar f0517efc6c MCAssembler: Move ApplyFixup to the TargetAsmBackend, this is a target specific not object writer specific task. 
llvm-svn: 98947
 2010-03-19 09:28:12 +00:00
Daniel Dunbar 6544baff6f MC/Darwin: Add a new target hook for whether the target uses "reliable" symbol differences, basically whether the assembler should attempt to understand atoms when using scattered symbols. 
Also, avoid some virtual call overhead.

llvm-svn: 98789
 2010-03-18 00:58:53 +00:00
Daniel Dunbar fe8d866fc7 MC/Mach-O/x86_64: Temporary labels in cstring sections require symbols (and external relocations, but we don't have x86_64 relocations yet). 
llvm-svn: 98583
 2010-03-15 21:56:50 +00:00
Daniel Dunbar 77c4141c8f MC: Sketch some TargetAsmBackend hooks we are going to need. 
llvm-svn: 98221
 2010-03-11 01:34:21 +00:00
Daniel Dunbar 245f5b2810 MC: Provide the target triple to AsmBackend constructors. 
llvm-svn: 98220
 2010-03-11 01:34:16 +00:00
Daniel Dunbar 40eb7f0991 MC/X86: Add stub AsmBackend. 
llvm-svn: 96763
 2010-02-21 21:54:14 +00:00