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Commit Graph

58 Commits

Author SHA1 Message Date
Oliver Stannard
9efd6f7301 Emit DWARF info for all code section in an assembly file
Currently, when using llvm as an assembler, DWARF debug information is only
generated for the .text section. This patch modifies this so that DWARF info
is emitted for all executable sections.

llvm-svn: 211273
2014-06-19 15:52:37 +00:00
Saleem Abdulrasool
4d36bdc570 MC: make ELF .type handling more GNU AS compatible
GAS documents the .type directive as having an optional comma following the key
symbol name when using the STT_<TYPE_IN_UPPER_CASE> form.  However, it treats
the comma as optional in all cases.  This makes the IAS support both forms of
inputs.  Furthermore, the prefixed forms take either the upper case name or the
lower case alias.

The tests are split into two separate sets as the hash character serves as a
comment character on x86, which is tested in the second set by using arm-elf
which uses the at symbol as a comment character.

llvm-svn: 210407
2014-06-08 00:34:34 +00:00
Craig Topper
c7c3a99ec2 [C++] Use 'nullptr'.
llvm-svn: 207083
2014-04-24 06:44:33 +00:00
Rafael Espindola
b5253f1b62 Map ELf flags back to more specific section kinds.
With that, convert another llc -filetype=obj test.

llvm-svn: 205031
2014-03-28 19:14:08 +00:00
Craig Topper
abf457f661 [C++11] Add 'override' keyword to virtual methods that override their base class.
llvm-svn: 203342
2014-03-08 07:14:16 +00:00
Venkatraman Govindaraju
78e98664c7 Add support for parsing sun-style section flags in ELFAsmParser.
llvm-svn: 202573
2014-03-01 06:21:00 +00:00
David Peixotto
5d70ac3303 Fix parsing of .symver directive on ARM
ARM assembly syntax uses @ for a comment, execpt for the second
parameter of the .symver directive which requires @ as part of the
symbol name. This commit fixes the parsing of this directive by
adding a special case for ARM for this one argumnet.

To make the change we had to move the AllowAtInIdentifier variable
to the MCAsmLexer interface (from AsmLexer) and expose a setter for
the value.  The ELFAsmParser then toggles this value when parsing
the second argument to the .symver directive for a target that
uses @ as a comment symbol

llvm-svn: 199339
2014-01-15 22:40:02 +00:00
Rafael Espindola
6f6b3d032c Move .ident handling to MCStreamer.
No functionality change, but exposes the API so that codegen can use it too.

Patch by Katya Romanova.

llvm-svn: 192757
2013-10-16 01:05:45 +00:00
David Majnemer
c1bd9963f1 ELF: Parse types in directives like binutils gas
Allow binutils .type and .section directives to take the following
forms:
- @<type>
- %<type>
- "<type>"

llvm-svn: 191134
2013-09-21 05:25:12 +00:00
Benjamin Kramer
e8d495c088 ELF: Add support for the exclude section bit for gas compat.
llvm-svn: 190769
2013-09-15 19:53:20 +00:00
David Majnemer
29e93ff017 MC: Add support for '?' flags in .section directives
Summary:
The '?' flag uses the last section group if the last had a section
group.  We treat combining an explicit section group and the '?' as a
hard error.

This fixes PR17198.

Reviewers: rafael, bkramer

Reviewed By: bkramer

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1686

llvm-svn: 190768
2013-09-15 19:24:16 +00:00
Benjamin Kramer
7df265741c Remove unused StringRef that no compiler warned about, I wonder why.
llvm-svn: 190759
2013-09-14 22:55:54 +00:00
Peter Collingbourne
a0d11d0e11 Add support for subsections to the ELF assembler. Fixes PR8717.
Differential Revision: http://llvm-reviews.chandlerc.com/D598

llvm-svn: 179725
2013-04-17 21:18:16 +00:00
Jim Grosbach
89c0252c2a MCParser: Update method names per coding guidelines.
s/AddDirectiveHandler/addDirectiveHandler/
s/ParseMSInlineAsm/parseMSInlineAsm/
s/ParseIdentifier/parseIdentifier/
s/ParseStringToEndOfStatement/parseStringToEndOfStatement/
s/ParseEscapedString/parseEscapedString/
s/EatToEndOfStatement/eatToEndOfStatement/
s/ParseExpression/parseExpression/
s/ParseParenExpression/parseParenExpression/
s/ParseAbsoluteExpression/parseAbsoluteExpression/
s/CheckForValidSection/checkForValidSection/

http://llvm.org/docs/CodingStandards.html#name-types-functions-variables-and-enumerators-properly

No functional change intended.

llvm-svn: 175675
2013-02-20 22:21:35 +00:00
Joerg Sonnenberger
e67dea422d Derive ELF section type from the name in some cases where GNU as does
so.

llvm-svn: 175327
2013-02-16 00:32:53 +00:00
Eli Bendersky
039d07cadd Use the ExtensionDirectiveHandler type in other places where it makes sense.
Since we already have this type it's a shame to keep dragging a pair of object
and method around explicitly.

llvm-svn: 172584
2013-01-16 00:50:52 +00:00
Eric Christopher
38c8e00aa9 These functions have default arguments of 0 for the last arg. Use
them.

llvm-svn: 171933
2013-01-09 01:57:54 +00:00
Dmitri Gribenko
1d75adbbb2 Remove redundant semicolons which are null statements.
llvm-svn: 163547
2012-09-10 21:26:47 +00:00
Benjamin Kramer
b778bbd91b ELF: Add support for the asm .version directive.
llvm-svn: 156712
2012-05-12 14:30:47 +00:00
Roman Divacky
a450b8b2c8 Add support for gnu_indirect_function.
llvm-svn: 146377
2011-12-12 17:34:04 +00:00
Jim Grosbach
2f728674cf Move some ELF directives into ELF asm parser.
The .local, .hidden, .internal, and .protected are not legal for all supported
file formats (in particular, they're invalid for MachO). Move the parsing for
them into the ELF assembly parser since that's the format they're for.
Similarly, .weak is used by COFF and ELF, but not MachO, so move the parsing
to the COFF and ELF asm parsers. Previously, using any of these directives
on Darwin would result in an assertion failure in the parser; now we get
a diagnostic as we should.

rdar://9827089

llvm-svn: 135921
2011-07-25 17:55:35 +00:00
Jim Grosbach
feb91f5361 Tidy up. 80 columns.
llvm-svn: 135917
2011-07-25 17:11:29 +00:00
Joerg Sonnenberger
9c30c492df 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
Joerg Sonnenberger
cbdd830a75 Bug#9172: Don't use static in file scope, use an attribute on the
parser.

llvm-svn: 126225
2011-02-22 16:53:11 +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
Rafael Espindola
ead58a5259 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
aefd549139 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
492ad6ca06 Remove more duplicated code.
llvm-svn: 124056
2011-01-23 04:43:11 +00:00
Rafael Espindola
59c1246cee Remove duplicated code.
llvm-svn: 124054
2011-01-23 04:28:49 +00:00
Rafael Espindola
2ebe553431 Add support for @note. Patch by Jörg Sonnenberger.
llvm-svn: 122568
2010-12-26 21:30:59 +00:00
Rafael Espindola
a8488b04e1 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
1a81f03f87 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
9cd0fd30e0 Parse and record the gnu_unique_object type.
llvm-svn: 118980
2010-11-13 04:51:02 +00:00
Rafael Espindola
dc54b2b285 gnu as support both % and @ before types, do the same.
llvm-svn: 118893
2010-11-12 15:47:08 +00:00
Rafael Espindola
8555d32c9e Initial comdat implementation.
llvm-svn: 118805
2010-11-11 18:13:52 +00:00
Rafael Espindola
3c0f11a265 Fixed version of 118639 with an extra assert to catch similar problems
earlier. Implicit bool -> int conversions are evil!

llvm-svn: 118651
2010-11-09 23:42:07 +00:00
Rafael Espindola
a16ec0145e Revert previous patch. Missed a case.
llvm-svn: 118645
2010-11-09 22:54:38 +00:00
Rafael Espindola
5e39a6d951 Remove IsExplicit. It was always false.
llvm-svn: 118639
2010-11-09 22:37:44 +00:00
Rafael Espindola
1602d991d5 Set default flags for .rodata.
llvm-svn: 118395
2010-11-08 02:47:59 +00:00
Rafael Espindola
7a38cb0144 Implement .weakref.
llvm-svn: 117911
2010-11-01 14:28:48 +00:00
Rafael Espindola
913ce7ebc8 Improvements to .section parsing:
* If we have a M or a G, reject sections without the type
* Only parse the flag specific arguments if we have M or G
* Parse the corresponding arguments for M and G

We ignore the G arguments and flag for now.

llvm-svn: 117608
2010-10-28 21:33:33 +00:00
Rafael Espindola
4db628cd34 Set default type and flags for .init and .fini.
llvm-svn: 117471
2010-10-27 18:45:20 +00:00
Rafael Espindola
23d05a8675 Add support for the .symver directive. This is really ugly, but most of it is
contained in the ELF object writer.

llvm-svn: 117448
2010-10-27 15:18:17 +00:00
Rafael Espindola
50d3c29c30 Add support for .ident.
llvm-svn: 117389
2010-10-26 19:35:47 +00:00
Michael J. Spencer
a2f33dfddc MC: Move ParseDirectiveELFType into ELFAsmParser. COFF uses .type for something else.
llvm-svn: 116142
2010-10-09 03:47:55 +00:00
Jan Wen Voung
0d25ddb1de Have ELFAsmParser.cpp use the already parsed "Size" (entry size) when
constructing a section. Test for a few cases also included.

llvm-svn: 115132
2010-09-30 02:41:46 +00:00
Rafael Espindola
442f81681e Make sure .text doesn't produce extra alignment.
llvm-svn: 114895
2010-09-27 21:40:27 +00:00
Rafael Espindola
fa964e153e Make sure that names like .note.GNU-stack are accepted as valid section names.
llvm-svn: 114091
2010-09-16 17:05:55 +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
Rafael Espindola
ce9b27497e Add support for leb128 of absolute expressions.
llvm-svn: 113691
2010-09-11 16:45:15 +00:00