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137 Commits

Author SHA1 Message Date
Evan Cheng f02ca16ba7 Convert MC tests to .s so codegen changes won't break them. 
llvm-svn: 122786
 2011-01-03 23:47:14 +00:00
Rafael Espindola 3686473578 Fix PR8878. 
llvm-svn: 122658
 2011-01-01 19:05:35 +00:00
Rafael Espindola 46a5b05207 Correctly encode pcrel|indirect. 
llvm-svn: 122624
 2010-12-29 04:31:26 +00:00
Rafael Espindola 563301dfdb Fix bug when trying to output uint16_t or uint32_t. 
llvm-svn: 122615
 2010-12-29 02:30:49 +00:00
Rafael Espindola 290d71671e Implement cfi_def_cfa. Also don't convert to dwarf reg numbers twice. Looks 
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
Rafael Espindola 426e68f793 Implement cfi_def_cfa_register. 
llvm-svn: 122612
 2010-12-29 00:26:06 +00:00
Rafael Espindola 86d347dd31 Initial .cfi_offset implementation. 
llvm-svn: 122611
 2010-12-29 00:09:59 +00:00
Rafael Espindola 6bbfb6c06c Don't produce a "DW_CFA_advance_loc 0". 
llvm-svn: 122609
 2010-12-28 23:38:03 +00:00
Rafael Espindola 85d91982ca Implement .cfi_remember_state and .cfi_restore_state. 
llvm-svn: 122602
 2010-12-28 18:36:23 +00:00
Rafael Espindola 736a35d9ab Relax address updates in the eh_frame section. 
llvm-svn: 122591
 2010-12-28 05:39:27 +00:00
Rafael Espindola a75b87b55a Start adding basic support for emitting the call frame instructions. 
llvm-svn: 122590
 2010-12-28 04:15:37 +00:00
Rafael Espindola 1de2dd0e5e Add support for .cfi_lsda. 
llvm-svn: 122584
 2010-12-27 15:56:22 +00:00
Rafael Espindola 8fc59a682f Handle reloc_riprel_4byte_movq_load. Should make the bots happy. 
llvm-svn: 122579
 2010-12-27 02:03:24 +00:00
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
Rafael Espindola 9ae2d05d45 Add support for @note. Patch by Jörg Sonnenberger. 
llvm-svn: 122568
 2010-12-26 21:30:59 +00:00
Rafael Espindola 9141b611ad Add basic support for .cfi_personality. 
llvm-svn: 122566
 2010-12-26 20:20:31 +00:00
Rafael Espindola 73c0ae77ca Simplify the handling of .size expressions. 
llvm-svn: 122404
 2010-12-22 16:03:00 +00:00
Roman Divacky 55184ddd35 Set the value of absolute symbols. 
llvm-svn: 122268
 2010-12-20 21:14:39 +00:00
Roman Divacky e15f591de4 Print all 64bits for st_value and st_size. Adjust tests accordingly. 
llvm-svn: 122263
 2010-12-20 20:49:43 +00:00
Rafael Espindola 2140ff508f Add a test that shows that we produce no fixups when computing the difference 
of two symbols in the same fragment.

llvm-svn: 122145
 2010-12-18 05:07:45 +00:00
Rafael Espindola af5ab7ad26 Test for push being relaxed. 
llvm-svn: 122124
 2010-12-18 01:16:59 +00:00
Rafael Espindola 32c74ea3ab "Fix" FDE alignment to match what gas does. 
llvm-svn: 122006
 2010-12-17 00:28:02 +00:00
Rafael Espindola 654cc4a81c Make pushq produce signed relocations. 
llvm-svn: 122005
 2010-12-16 22:50:01 +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 1048e75fb9 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
Benjamin Kramer e6840ef4b3 Fix some broken CHECK lines. 
llvm-svn: 120332
 2010-11-29 22:34:55 +00:00
Rafael Espindola f8e127eaf6 Factor some code to parseSectionFlags and fix the default type of a section. 
llvm-svn: 120145
 2010-11-25 15:32:56 +00:00
Rafael Espindola 9f75d5df0b Behave a bit more like gnu as and use the symbol (instead of the section) 
for any relocation to a symbol defined in a tls section.

llvm-svn: 120121
 2010-11-24 21:57:39 +00:00
Rafael Espindola 708ac4d6ad Relocate with the symbol if the relocation is of kind NTPOFF. 
Patch by David Meyer, I added the test.

llvm-svn: 120104
 2010-11-24 19:23:50 +00:00
Rafael Espindola e98d483b71 Fix and add tests for all cases in x86 and x86_64 where gnu as implicitly 
sets the type of a symbol to STT_TLS.

llvm-svn: 120100
 2010-11-24 18:51:21 +00:00
Rafael Espindola 4e70ac7b68 If a symbol is used as tls, mark it as tls even if not declare as so. Probably 
fixes PR8659.

llvm-svn: 120076
 2010-11-24 02:19:40 +00:00
Rafael Espindola 3c7cab1402 Produce a relocation for pcrel absolute values. Based on a patch by David Meyer. 
llvm-svn: 120006
 2010-11-23 07:20:12 +00:00
Rafael Espindola 26cb15a549 Handle PCRel relocations with absolute values. Fixes PR8656. 
llvm-svn: 119917
 2010-11-21 00:48:25 +00:00
Rafael Espindola b67912d5cd Add support for .int. 
llvm-svn: 119512
 2010-11-17 16:24:40 +00:00
Rafael Espindola 5c996894bd Add support for .2byte, .4byte and .8byte. 
Fixes PR8631.

llvm-svn: 119511
 2010-11-17 16:15:42 +00:00
Rafael Espindola 7d19efd6ff A bit more of gnu as compatibility when handling relocations with aliases. 
llvm-svn: 119328
 2010-11-16 04:11:46 +00:00
Rafael Espindola 8c3039b67b Change MCExpr::EvaluateAsRelocatableImpl of variables to return the original 
variable if recursing fails to simplify it.

Factor AliasedSymbol to be a method of MCSymbol.

Update MCAssembler::EvaluateFixup to match the change in
EvaluateAsRelocatableImpl.

Remove the WeakRefExpr hack, as the object writer now sees the weakref with
no extra effort needed.

Nothing else is using MCTargetExpr, but keep it for now.

Now that the ELF writer sees relocations with aliases, handle

    .weak    foo2
foo2:
    .weak    bar2
    .set    bar2,foo2
    .quad    bar2

the same way gas does and produce a relocation with bar2.

llvm-svn: 119152
 2010-11-15 16:33:49 +00:00
Rafael Espindola 46c79ef113 Fix PR8565. 
This moves most of the isUsed logic to the MCSymbol itself. With this we
get a bit more relaxed about allowing definitions after uses: uses that
don't evaluate their argument immediately (jmp foo) are accepted.

ddunbar, this was the smallest compromise I could think of that lets us
accept gcc (and clang!) assembly.

llvm-svn: 119144
 2010-11-15 14:40:36 +00:00
Rafael Espindola 240028d11d Move the logic to decide with which symbol we produce a relocation (if any) to 
a central location. This also makes us a bit more compatible with gas.

llvm-svn: 119094
 2010-11-14 23:53:26 +00:00
Rafael Espindola a7d0bed336 Fix another case of a .comm directive without a corresponding .type 
directive.

llvm-svn: 119073
 2010-11-14 21:11:16 +00:00
Rafael Espindola b05ef7377a Fix the type of a symbol created with .comm and no corresponding .type. 
llvm-svn: 119060
 2010-11-14 19:40:55 +00:00
Rafael Espindola 7d0ba3464e Handle a peculiar comdat case: Creating a section with an undefined 
signature symbol causes a local symbol to be created unless there is
some other use of the symbol.

llvm-svn: 119026
 2010-11-14 04:17:37 +00:00
Rafael Espindola 4bcf94c75a Parse and record the gnu_unique_object type. 
llvm-svn: 118980
 2010-11-13 04:51:02 +00:00
Rafael Espindola 1d37f35eea Fix the encoding of negative line deltas. 
llvm-svn: 118962
 2010-11-13 01:06:27 +00:00
Rafael Espindola de990b270d gnu as support both % and @ before types, do the same. 
llvm-svn: 118893
 2010-11-12 15:47:08 +00:00
Rafael Espindola 84d031870c Mark labels declared in tls sections as STT_TLS. This matches the behavior of 
gas.

llvm-svn: 118818
 2010-11-11 19:04:55 +00:00
Rafael Espindola a3e9a2298d Initial comdat implementation. 
llvm-svn: 118805
 2010-11-11 18:13:52 +00:00
Rafael Espindola fb6540c112 Make AliasedSymbol able to handle MCTargetExpr. They can get here if 
a weakref is used with a VariantKind.

llvm-svn: 118798
 2010-11-11 17:24:43 +00:00