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711 Commits

Author SHA1 Message Date
Lang Hames
ce8287db09 [RuntimeDyld] Make LoadedObjectInfo::getLoadedSectionAddress take a SectionRef 
rather than a string section name.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243456 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-28 17:52:11 +00:00
Rafael Espindola
826e95913b Delete dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243015 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 13:42:16 +00:00
Rafael Espindola
a7616cd14c Add a version of getSymbol with an explicit symbol table. Use it. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243011 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 12:49:40 +00:00
Rafael Espindola
a95022a4f3 Refactor duplicated code and check for invalid symbol table size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242981 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 03:24:22 +00:00
Rafael Espindola
9db135a5f1 Fix fetching the symbol table of a thin archive. 
We were trying to read it as an external file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242926 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-22 19:34:26 +00:00
Rafael Espindola
55b052ae66 Delete ELFEntityIterator. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242901 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-22 14:09:20 +00:00
Michael J. Spencer
3f6881efa5 [Object][ELF] Handle files with no section header string table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242839 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 21:40:33 +00:00
Rafael Espindola
c22eb2bea6 Don't iterate over the program headers in the constructor of ELFFile. 
Not every program needs this information.

In particular, it is necessary and sufficient for a static linker to scan the
section table.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242833 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 20:50:53 +00:00
Rafael Espindola
961b7c2b52 Remove always null argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242828 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 19:38:32 +00:00
Rafael Espindola
d8a62d931e Remove getDynamicSymbolName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242821 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 18:20:17 +00:00
Rafael Espindola
9ed0d629ce Remove getStaticSymbolName. 
Every user now keeps track of the correct string table to use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242818 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 18:04:29 +00:00
Rafael Espindola
746609067c Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242804 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 16:50:57 +00:00
Rafael Espindola
7eeb71ddc3 Replace the last uses of ELF::getSymbolName in llvm-readobj. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242798 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 16:26:21 +00:00
Rafael Espindola
fcadda639e llvm-readobj: use the associated string table to print symbols. NFI. 
This just removes some cases that require ELFFile to eagerly parse the ELF
file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242794 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 16:02:10 +00:00
Rafael Espindola
ab466de617 Remove unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242789 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 14:45:56 +00:00
Rafael Espindola
04d208815c Don't do a walk over the dynamic table just to find DT_SONAME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242752 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 01:01:29 +00:00
Rafael Espindola
bb418bc23b Remove duplicated code. 
Both ELFObjectFile and ELFFile had an implementation of getLoadName.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242725 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 22:41:44 +00:00
Rafael Espindola
0377a22491 Simplify now that we can iterate backwards. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242715 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 21:45:56 +00:00
Rafael Espindola
d94e17bde9 Simplify iterating over the dynamic section and report broken ones. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242712 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 21:23:29 +00:00
Rafael Espindola
1c12cc02fd Remove Elf_Rela_Iter and Elf_Rel_Iter. 
Use just the pointers and check for invalid relocation sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242700 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 20:07:50 +00:00
Rafael Espindola
96d9043a78 Report errors an invalid virtual addresses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242676 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 14:45:03 +00:00
Rafael Espindola
3c7642e230 Remove unnecessary code. 
We were locating the dynamic string table via both the section and segment
headers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242674 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 14:29:00 +00:00
Rafael Espindola
96a1f00376 Simplify the search for which segment has a virtual address. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242672 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 14:15:38 +00:00
Rafael Espindola
9a4133e1ee Simplify iterating over program headers and detect corrupt ones. 
We now use a simple pointer and have range loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242669 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 13:35:33 +00:00
Rafael Espindola
ba7661d294 For new archive member we only need to store the full path. 
We were storing both the path and the file name, which was redundant
and easy to get confused up with.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242347 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-15 22:46:53 +00:00
Rafael Espindola
8d1daf644b Handle the error of trying to convert a regular archive to a thin one. 
While at it, test that we can add to a thin archive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242330 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-15 20:45:56 +00:00
Rafael Espindola
4c9cd28947 Initial support for writing thin archives. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242269 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-15 05:47:46 +00:00
Rafael Espindola
7a6e3434ba Add support for reading members out of thin archives. 
For now the Archive owns the buffers of the thin archive members.
This makes for a simple API, but all the buffers are destructed
only when the archive is destructed. This should be fine since we
close the files after mmap so we should not hit an open file
limit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242215 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-14 22:18:43 +00:00
Rafael Espindola
6e9f427cb2 llvm-ar: Don't try to extract from thin archives. 
This matches the gnu ar behavior.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242162 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-14 16:55:13 +00:00
Hans Wennborg
a69b1311b2 Allocate the IntervalMap in ELF.h on the heap to work around MSVC alignment bug (PR24113) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242157 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-14 16:27:16 +00:00
Rafael Espindola
ec6cc055ce Add a herper function. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242100 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-14 01:06:16 +00:00
Rafael Espindola
168b1bebf0 Add support deterministic output in llvm-ar and make it the default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242061 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-13 20:38:09 +00:00
Michael J. Spencer
d37a9dfc0b [Object][ELF] Handle the dynamic string table in files without a section table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241937 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-10 20:11:57 +00:00
NAKAMURA Takumi
89a6fba75e llvm/Object/ELF.h: Appease g++-4.7.2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241895 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-10 08:43:41 +00:00
Michael J. Spencer
478d483d7e Fix shadowing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241870 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 22:42:21 +00:00
Michael J. Spencer
8109763d68 [Object][ELF] Support dumping hash-tables from files with no section table. 
This time without breaking the bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241869 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 22:32:24 +00:00
Adrian Prantl
2efb9f7c3e Temporarily reverting 241765, 241768, and 241772 to unbreak the build bots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241781 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 02:14:49 +00:00
Davide Italiano
776151f085 Silence a warning, trying to unbreak the build after r241765. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241772 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 01:45:02 +00:00
Michael J. Spencer
43dce9c732 Fix typename issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241768 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 00:46:24 +00:00
Michael J. Spencer
7d0e4c73d4 [Object][ELF] Support dumping hash-tables from files with no section table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241765 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 00:21:06 +00:00
Rafael Espindola
c155a415e8 Revert part of "Disallow Archive::child_iterator that don't point to an archive." 
This reverts parts of commit r241747. MSVC doesn't like it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241753 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-08 22:41:41 +00:00
Rafael Espindola
bf4296f2c0 Disallow Archive::child_iterator that don't point to an archive. 
NFC, just less error prone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241747 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-08 22:15:07 +00:00
Rafael Espindola
b13e877e27 Start adding support for writing archives in BSD format. 
No support for the symbol table yet (but will hopefully add it today).
We always use the long filename format so that we can align the member,
which is an advantage of the BSD format.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241721 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-08 20:47:32 +00:00
Rui Ueyama
c011edf224 Object/COFF: Fix import library's getNameType method. 
This expression to extract bits were simply wrong.
I'm going to test this functionality from LLD.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241703 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-08 18:21:09 +00:00
Rafael Espindola
7b7c81cd35 Delete UnknownAddress. It is a perfectly valid symbol value. 
getSymbolValue now returns a value that in convenient for most callers:
* 0 for undefined
* symbol size for common symbols
* offset/address for symbols the rest

Code that needs something more specific can check getSymbolFlags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241605 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-07 17:12:59 +00:00
Rafael Espindola
078442e9d4 Inline function into single use. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241453 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-06 15:36:50 +00:00
Rafael Espindola
c2966a3ac7 Remove getRelocationAddress. 
Originally added in r139314.

Back then it didn't actually get the address, it got whatever value the
relocation used: address or offset.

The values in different object formats are:

* MachO: Always an offset.
* COFF: Always an address, but when talking about the virtual address of
  sections it says: "for simplicity, compilers should set this to zero".
* ELF: An offset for .o files and and address for .so files. In the case of the
  .so, the relocation in not linked to any section (sh_info is 0). We can't
  really compute an offset.

Some API mappings would be:

* Use getAddress for everything. It would be quite cumbersome. To compute the
  address elf has to follow sh_info, which can be corrupted and therefore the
  method has to return an ErrorOr. The address of the section is also the same
  for every relocation in a section, so we shouldn't have to check the error
  and fetch the value for every relocation.

* Use a getValue and make it up to the user to know what it is getting.

* Use a getOffset and:
 * Assert for dynamic ELF objects. That is a very peculiar case and it is
   probably fair to ask any tool that wants to support it to use ELF.h. The
   only tool we have that reads those (llvm-readobj) already does that. The
   only other use case I can think of is a dynamic linker.
 * Check that COFF .obj files have sections with zero virtual address spaces. If
   it turns out that some assembler/compiler produces these, we can change
   COFFObjectFile::getRelocationOffset to subtract it. Given COFF format,
   this can be done without the need for ErrorOr.

The getRelocationAddress method was never implemented for COFF. It also
had exactly one use in a very peculiar case: a shortcut for adding the
section value to a pcrel reloc on MachO.

Given that, I don't expect that there is any use out there of the C API. If
that is not the case, let me know and I will add it back with the implementation
inlined and do a proper deprecation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241450 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-06 14:55:37 +00:00
Rafael Espindola
a25ee390b5 Fix handling of ELF::R_MIPS_32 on Mips64. 
Thanks to Aboud, Amjad for reporting the regression and providing the testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241440 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-06 12:18:44 +00:00
Simon Atanasyan
afc0340d96 [ELFYAML] Fix handling SHT_NOBITS sections by obj2yaml/yaml2obj tools 
SHT_NOBITS sections do not have content in an object file. Now the yaml2obj
tool does not accept `Content` field for such sections, and the obj2yaml
tool does not attempt to read the section content from a file.

Restore r241350 and r241352.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241377 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-03 23:00:54 +00:00
Benjamin Kramer
c9a5964ea2 Delete dead code. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241367 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-03 19:10:09 +00:00