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242 Commits

Author SHA1 Message Date
David Meyer 44ec69efe0 For ELF, also call fixSymbolsInTLSFixups() on expressions passed to EmitValue (literal values). Previously only called on expressions in instructions. New test cases added to tls.s, tls-i386.s. Resolves PR11981. 
llvm-svn: 150582
 2012-02-15 15:09:06 +00:00
Rafael Espindola 3c47e37387 Add support for .cfi_signal_frame. Fixes pr11762. 
llvm-svn: 148733
 2012-01-23 21:51:52 +00:00
Rafael Espindola 4ea99816ef Implement cfi_restore. Patch by Brian Anderson! 
llvm-svn: 147356
 2011-12-29 21:43:03 +00:00
Rafael Espindola ef4aa35164 Implement .cfi_escape. Patch by Brian Anderson! 
llvm-svn: 147352
 2011-12-29 20:24:47 +00:00
Roman Divacky 735cb8bcdc Add support for gnu_indirect_function. 
llvm-svn: 146377
 2011-12-12 17:34:04 +00:00
Rafael Espindola c7f355b8e1 Handle expressions of the form _GLOBAL_OFFSET_TABLE_-symbol the same way gas 
does. The _GLOBAL_OFFSET_TABLE_ is still magical in that we get a R_386_GOTPC,
but it doesn't change the immediate in the same way as when the expression
has no right hand side symbol.

llvm-svn: 146311
 2011-12-10 02:28:43 +00:00
Rafael Espindola 7e0a793183 Handle reloc_signed_4byte in here. Not doing so was a regression from my 
previous commit. It is strange that we see it in 32 bits. We already
have a fixme about it.

llvm-svn: 146273
 2011-12-09 19:57:29 +00:00
Rafael Espindola 0a7f336475 Handle the case of the magical _GLOBAL_OFFSET_TABLE_ showing up in a 
symbol difference. This matches gas behavior and fixes PR11513.

We still don't handle _GLOBAL_OFFSET_TABLE_ in data sections.

llvm-svn: 146238
 2011-12-09 03:03:58 +00:00
Nick Lewycky 3e01bd3b60 Apparently, sometimes llvm-nm doesn't put the undefined symbol at the top. Take 
that into account and test for no U's showing up in the middle, which is what
we really wanted to test for.

llvm-svn: 141653
 2011-10-11 06:58:11 +00:00
Nick Lewycky 29e7b315ac Also create a shndx even if there are no symbols. This lets us test 
.symtab_shndx reading and writing together, and finally we have a testcase for
r141440.

llvm-svn: 141641
 2011-10-11 03:54:50 +00:00
Rafael Espindola 77dde89b90 Fix the bitwidth of the remaining fields. 
llvm-svn: 136884
 2011-08-04 17:00:11 +00:00
Rafael Espindola 9bc32a96be print st_shndx with the correct number of bits. 
llvm-svn: 136880
 2011-08-04 15:50:13 +00:00
Rafael Espindola 9528995e3f print st_other with the correct number of bits. 
llvm-svn: 136877
 2011-08-04 15:38:19 +00:00
Rafael Espindola 96df560ce1 print st_type with the correct number of bits. 
llvm-svn: 136875
 2011-08-04 15:24:00 +00:00
Rafael Espindola 79ef75dc49 Print st_bind with the correct number of bits. 
llvm-svn: 136874
 2011-08-04 15:10:35 +00:00
Rafael Espindola 1848231ad1 Print r_sym with the correct number of bits. 
llvm-svn: 136873
 2011-08-04 14:48:27 +00:00
Rafael Espindola 260af5cef6 Print r_type with the correct number of bits. 
llvm-svn: 136872
 2011-08-04 14:39:30 +00:00
Rafael Espindola 1b282e7e49 Another counter goes decimal. 
llvm-svn: 136871
 2011-08-04 14:27:46 +00:00
Rafael Espindola 65c559c5fb Change anther counter to decimal. 
llvm-svn: 136870
 2011-08-04 14:01:03 +00:00
Rafael Espindola cad9e7f094 Don't print a counter in hex. 
llvm-svn: 136869
 2011-08-04 13:39:15 +00:00
Rafael Espindola 69c67d3b18 Print all the bits in the addend. 
llvm-svn: 136867
 2011-08-04 13:00:24 +00:00
Jason W Kim e4df09f7ba Fix http://llvm.org/bugs/show_bug.cgi?id=10568 
Move the reloc size assert into AsmBackend - where it is more apropos.

llvm-svn: 136855
 2011-08-04 00:38:45 +00:00
Eli Friedman ae60b6b008 Extend the hack for _GLOBAL_OFFSET_TABLE_ slightly; PR10389. 
llvm-svn: 135607
 2011-07-20 19:36:11 +00:00
Eli Friedman 3846acc98e PR10370: Make sure we know how to relax push correctly on x86-64. 
llvm-svn: 135303
 2011-07-15 21:28:39 +00:00
Kevin Enderby 6aac575c9f Update MC/ELF/relocation.s with change to X86 PUSH64i8 in r134501. 
llvm-svn: 134511
 2011-07-06 17:55:20 +00:00
Nick Lewycky 34fa1684e7 Add support for @GOTPTOFF in i386 mode. 
llvm-svn: 132643
 2011-06-04 17:38:07 +00:00
Rafael Espindola 2e84c82750 Use %rbp on a 64 bit test. 
llvm-svn: 132279
 2011-05-29 04:04:50 +00:00
Benjamin Kramer 41112a1703 Move ARM specific test into the ARM subdir. 
llvm-svn: 132255
 2011-05-28 11:01:30 +00:00
Rafael Espindola 0fc5e89c82 ADD64ri32 sign extends its argument, so we need to use a R_X86_64_32S. 
Fixes PR9934.

We really need to start tblgening the relocation info :-(

llvm-svn: 131669
 2011-05-19 20:32:34 +00:00
Rafael Espindola e90c1cb221 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 27390b4a0e In a debug_frame the cfi offset is to the start of the debug_frame section! 
llvm-svn: 131129
 2011-05-10 15:20:23 +00:00
Rafael Espindola 1ecb12fc57 Add support for producing .deubg_frame sections. 
llvm-svn: 131121
 2011-05-10 03:54:12 +00:00
Rafael Espindola 1ec0f46169 Fix the case of a .cfi_rel_offset before any .cfi_def_cfa_offset. 
llvm-svn: 129362
 2011-04-12 16:12:03 +00:00
Rafael Espindola 2e1c9d2188 Implement .cfi_same_value. 
llvm-svn: 129361
 2011-04-12 15:31:05 +00:00
Rafael Espindola 82065cb6cf Implement cfi_rel_offset 
llvm-svn: 129306
 2011-04-11 21:49:50 +00:00
Rafael Espindola 4f46abc15e Add test for previous commit. 
llvm-svn: 129304
 2011-04-11 21:41:34 +00:00
Rafael Espindola 9a1a34b105 Update tests 
llvm-svn: 129116
 2011-04-07 23:51:25 +00:00
Rafael Espindola 1557fd6d39 Write the section table and the section data in the same order that 
gun as does. This makes it a lot easier to compare the output of both
as the addresses are now a lot closer.

llvm-svn: 127972
 2011-03-20 18:44:20 +00:00
Joerg Sonnenberger 07de07eeea Fix handling of @IDNTPOFF relocations, they need to get STT_TLS. 
While here, add VK_ARM_TPOFF and VK_ARM_GOTTPOFF, too.

llvm-svn: 127780
 2011-03-17 00:35:10 +00:00
Joerg Sonnenberger 62f759791a Be nice to Xcore and the XMOS assembler and avoid quoting section names 
that contain only letters, digits and the characters "_" and ".".

llvm-svn: 127028
 2011-03-04 20:03:14 +00:00
Joerg Sonnenberger 852ab890b5 Bug#9033: For the ELF assembler output, always quote the section name. 
llvm-svn: 126963
 2011-03-03 22:31:08 +00:00
Eli Friedman d92d17bf67 PR9352: Always emit a relocation for weak symbols. Not emitting relocations 
for calls to weak symbols with a definition has the appearance of working
with LLVM-generated code because weak symbol definitions are put in their
own sections.

llvm-svn: 126933
 2011-03-03 07:24:36 +00:00
Chris Lattner 78178749e9 split this test into arch specific pieces, so the ARM 
test isn't run when the arm backend isn't built.  This
fixes PR9327

llvm-svn: 126500
 2011-02-25 19:06:35 +00:00
Joerg Sonnenberger afb36fad99 Restore r125595 (reverted in r126336) with modifications: 
Introduce a variable in the AsmParserExtension whether [] is valid in an
expression. If it is true, parse them like (). Enable this for ELF only.

llvm-svn: 126443
 2011-02-24 21:59:22 +00:00
Rafael Espindola 9e18e96264 Put in the symbol table symbols only used in a .globl statement. 
Fixes PR9292.

llvm-svn: 126330
 2011-02-23 20:22:07 +00:00
Joerg Sonnenberger 37d5484d18 Handle FK_PCRel_1 and add a test case for this and FK_PCRel_4. 
llvm-svn: 126157
 2011-02-21 23:25:41 +00:00
Rafael Espindola f849bf81bd Add some limited support for labels in org directives. Hopefully enough to fix 
PR9245.

llvm-svn: 126091
 2011-02-20 20:20:07 +00:00
Rafael Espindola 490d02a334 Gas is very inconsistent about when a relaxation/relocation is needed. Do 
the right thing and stop trying to copy it. Fixes PR8944.

llvm-svn: 125648
 2011-02-16 03:25:55 +00:00
Roman Divacky ed5efb4053 Add support for specifying register name in cfi-register/offset/def 
as well as register number.

llvm-svn: 124379
 2011-01-27 17:16:37 +00:00
Rafael Espindola 78c9f78fc9 Jörg Sonnenberger noticed that we were missing this test. 
llvm-svn: 124139
 2011-01-24 19:40:38 +00:00
Rafael Espindola 689939e648 Handle strings in section names the same way as gas: 
* If the name is a single string, we remove the quotes
* If the name starts without a quote, we include any quotes in the name

llvm-svn: 124127
 2011-01-24 18:02:54 +00:00
Rafael Espindola b3eca9bb71 Add support for the --noexecstack option. 
llvm-svn: 124077
 2011-01-23 17:55:27 +00:00
Rafael Espindola 8bac423ddb Add support for lowercase variants. 
llvm-svn: 124071
 2011-01-23 16:11:25 +00:00
Rafael Espindola 4b7b7fba38 Delay the creation of eh_frame so that the user can change the defaults. 
Add support for SHT_X86_64_UNWIND.

llvm-svn: 124059
 2011-01-23 05:43:40 +00:00
Rafael Espindola ec517cdf24 Update tests. 
llvm-svn: 123591
 2011-01-16 18:02:57 +00:00
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