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Commit Graph

402 Commits

Author SHA1 Message Date
Rafael Espindola
56c64fd6fd Convert getFileOffset to getOffset and move it to its only user.
We normally don't drop functions from the C API's, but in this case I think we
can:

* The old implementation of getFileOffset was fairly broken
* The introduction of LLVMGetSymbolFileOffset was itself a C api breaking
  change as it removed LLVMGetSymbolOffset.
* It is an incredibly specialized use case. The only reason MCJIT needs it is
  because of its odd position of being a dynamic linker of .o files.

llvm-svn: 206750
2014-04-21 13:45:32 +00:00
Craig Topper
c2260fc0ab [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.
llvm-svn: 206252
2014-04-15 06:32:26 +00:00
Craig Topper
bd0a634bba [C++11] More 'nullptr' conversion or in some cases just using a boolean check instead of comparing to nullptr.
llvm-svn: 206129
2014-04-13 04:57:38 +00:00
Saleem Abdulrasool
c43f9261a0 tools: teach objdump about FILE aux records
Add support for file auxiliary symbol entries in COFF symbol tables.  A COFF
symbol table with a FILE entry is followed by sizeof(__FILE__) / 18 auxiliary
symbol records which contain the filename.  Read them and form the original
filename that the record contains.  Then display the name in the output.

llvm-svn: 206126
2014-04-13 03:11:08 +00:00
Simon Atanasyan
129c45d10c [yaml2obj][ELF] ELF Relocations Support.
The patch implements support for both relocation record formats: Elf_Rel
and Elf_Rela. It is possible to define relocation against symbol only.
Relocations against sections will be implemented later. Now yaml2obj
recognizes X86_64, MIPS and Hexagon relocation types.

Example of relocation section specification:
Sections:
- Name: .text
  Type: SHT_PROGBITS
  Content: "0000000000000000"
  AddressAlign: 16
  Flags: [SHF_ALLOC]

- Name: .rel.text
  Type: SHT_REL
  Info: .text
  AddressAlign: 4
  Relocations:
    - Offset: 0x1
      Symbol: glob1
      Type: R_MIPS_32
    - Offset: 0x2
      Symbol: glob2
      Type: R_MIPS_CALL16

The patch reviewed by Michael Spencer, Sean Silva, Shankar Easwaran.

llvm-svn: 206017
2014-04-11 04:13:39 +00:00
David Majnemer
60de53a3e4 YAMLIO: Allow scalars to dictate quotation rules
Introduce ScalarTraits::mustQuote which determines whether or not a
StringRef needs quoting before it is acceptable to output.

llvm-svn: 205955
2014-04-10 07:37:33 +00:00
David Majnemer
247d9155db obj2yaml: Use the correct relocation type for different machine types
The IO normalizer would essentially lump I386 and AMD64 relocations
together.  Relocation types with the same numeric value would then get
mapped in appropriately.

For example:
IMAGE_REL_AMD64_ADDR64 and IMAGE_REL_I386_DIR16 both have a numeric
value of one.  We would see IMAGE_REL_I386_DIR16 in obj2yaml conversions
of object files with a machine type of IMAGE_FILE_MACHINE_AMD64.

llvm-svn: 205746
2014-04-07 23:12:20 +00:00
Rafael Espindola
c4dd200975 Implement getRelocationAddress for MachO and ET_REL elf files.
With that, fix the symbolizer to work with any ELF file.

llvm-svn: 205588
2014-04-03 23:54:35 +00:00
Rafael Espindola
0ab1b9941a Remove section_rel_empty. Just compare begin() and end() instead.
llvm-svn: 205577
2014-04-03 22:42:22 +00:00
Rafael Espindola
44e832f9f7 Reuse existing variable.
llvm-svn: 205572
2014-04-03 21:48:41 +00:00
Rafael Espindola
2c9ebadfdc Handle getting UnknownAddressOrSize or section_end().
These should probably be error conditions.

llvm-svn: 205509
2014-04-03 03:57:03 +00:00
Rafael Espindola
f4157b844b Implement get getSymbolFileOffset with getSymbolAddress.
This has the following advantages:
* Less code.
* The old ELF implementation was wrong for non-relocatable objects.
* The old ELF implementation (and I think MachO) was wrong for thumb.

No current testcase since this is only used from MCJIT and it only uses
relocatable objects and I don't think it supports thumb yet.

llvm-svn: 205508
2014-04-03 03:13:33 +00:00
Rafael Espindola
b4418f30c1 Remove getSymbolValue.
All existing users explicitly ask for an address or a file offset.

llvm-svn: 205503
2014-04-03 02:32:47 +00:00
Rafael Espindola
f9c7d92ebc Add support for the R_ARM_ABS32 relocation.
This should bring the arm buildbots back.

llvm-svn: 205502
2014-04-03 02:27:00 +00:00
Rafael Espindola
7752d2f349 Only clear the thumb bit from function addresses.
llvm-svn: 205500
2014-04-03 02:20:43 +00:00
Rafael Espindola
edcad2493a Simplify ELFObjectFile<ELFT>::getSymbolAddress.
In particular, we only need to fetch the section if this is a relocatable
object.

No functionality change.

llvm-svn: 205499
2014-04-03 01:51:15 +00:00
Rafael Espindola
1cc921e760 Revert "Fix a nomenclature error in llvm-nm."
This reverts commit r205479.

It turns out that nm does use addresses, it is just that every reasonable
relocatable ELF object has sections with address 0. I have no idea if those
exist in reality, but it at least it shows that llvm-nm should use the name
address.

The added test was includes an unusual .o file with non 0 section addresses. I
created it by hacking ELFObjectWriter.cpp.

Really sorry for the churn.

llvm-svn: 205493
2014-04-03 00:19:35 +00:00
Rafael Espindola
23a6de77e7 Fix a nomenclature error in llvm-nm.
What llvm-nm prints depends on the file format. On ELF for example, if the
file is relocatable, it prints offsets. If it is not, it prints addresses.
Since it doesn't really need to care what it is that it is printing, use the
generic term value.

Fix or implement getSymbolValue to keep llvm-nm working.

llvm-svn: 205479
2014-04-02 22:52:46 +00:00
Rafael Espindola
fc351c0ca9 Add back an assert that was lost in the ELFObjectFile.h split.
llvm-svn: 205456
2014-04-02 20:00:33 +00:00
Daniel Sanders
9a1bf52b88 [yaml2obj] Add support for ELF e_flags.
Summary:
The FileHeader mapping now accepts an optional Flags sequence that accepts
the EF_<arch>_<flag> constants. When not given, Flags defaults to zero.

Reviewers: atanasyan

Reviewed By: atanasyan

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3213

llvm-svn: 205173
2014-03-31 09:44:05 +00:00
Juergen Ributzka
5b666f23fd [RuntimeDyld] Allow processRelocationRef to process more than one relocation entry at a time.
Some targets require more than one relocation entry to perform a relocation.
This change allows processRelocationRef to process more than one relocation
entry at a time by passing the relocation iterator itself instead of just
the relocation entry.

Related to <rdar://problem/16199095>

llvm-svn: 204439
2014-03-21 07:26:41 +00:00
Rui Ueyama
14b8467bd2 Object/COFF: Support large relocation table.
NumberOfRelocations field in COFF section table is only 16-bit wide. If an
object has more than 65535 relocations, the number of relocations is stored
to VirtualAddress field in the first relocation field, and a special flag
(IMAGE_SCN_LNK_NRELOC_OVFL) is set to Characteristics field.

In test we cheated a bit. I made up a test file so that it has
IMAGE_SCN_LNK_NRELOC_OVFL flag but the number of relocations is much smaller
than 65535. This is to avoid checking in a large test file just to test a
file with many relocations.

Differential Revision: http://llvm-reviews.chandlerc.com/D3139

llvm-svn: 204418
2014-03-21 00:44:19 +00:00
David Majnemer
5717204ae7 Object: Abstract out the determination of function line symbols
No functionality change.

llvm-svn: 204313
2014-03-20 06:28:55 +00:00
David Majnemer
f7f0856774 COFF: Fix a typo
Introduced when I rebased my changes to use isReservedSectionNumber.

llvm-svn: 204260
2014-03-19 20:16:23 +00:00
David Majnemer
4534e0a71a Object: Provide a richer means of describing auxiliary symbols
The current state of affairs has auxiliary symbols described as a big
bag of bytes. This is less than satisfying, it detracts from the YAML
file as being human readable.

Instead, allow for symbols to optionally contain their auxiliary data.
This allows us to have a much higher level way of describing things like
weak symbols, function definitions and section definitions.

This depends on D3105.

Differential Revision: http://llvm-reviews.chandlerc.com/D3092

llvm-svn: 204214
2014-03-19 04:47:47 +00:00
David Majnemer
7df7aea167 Object: Move auxiliary symbol definitions from llvm-readobj
Summary: These definitions are useful to other aspects of LLVM, move them out.

Reviewers: rafael, nrieck, ruiu

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3105

llvm-svn: 204213
2014-03-19 04:33:27 +00:00
David Majnemer
f6984af2ab Object: Clean up COFF.h
The file violated the coding standard.  Make it conform.

No functionality change.

llvm-svn: 204212
2014-03-19 02:37:19 +00:00
Jim Grosbach
7f5f32ad56 Darwin: Add assembler directives to create version-min load commands.
Allow object files to be tagged with a version-min load command for iOS
or MacOSX.

Teach macho-dump to understand the version-min load commands for
testcases.

rdar://11337778

llvm-svn: 204190
2014-03-18 22:09:05 +00:00
Alexey Samsonov
c29886ea05 [C++11] Change the interface of getCOFF{Section,Relocation,Symbol} to make it work with range-based for loops.
Reviewers: ruiu

Reviewed By: ruiu

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3097

llvm-svn: 204120
2014-03-18 06:53:02 +00:00
Alexey Samsonov
d507177bf9 [C++11] Introduce ObjectFile::symbols() to use range-based loops.
Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3081

llvm-svn: 204031
2014-03-17 07:28:19 +00:00
Rui Ueyama
0acac7750e Object/COFF: change data type of SymbolNumber from int16 to uint16.
Microsoft PE/COFF Spec clearly states that the field is of signed interger
type. However, in reality, it's unsigned. If cl.exe needs to create a large
number of sections for COMDAT sections, it will just create more than 32768
sections. Handling large section number as negative number is not correct.
I think this is a spec bug.

Differential Revision: http://llvm-reviews.chandlerc.com/D3088

llvm-svn: 203986
2014-03-15 00:04:08 +00:00
Alexey Samsonov
74b6db47a0 Delete unused ObjectFile::{begin,end}_symbols()
llvm-svn: 203928
2014-03-14 14:52:03 +00:00
Alexey Samsonov
c7665b69a6 [C++11] Introduce SectionRef::relocations() to use range-based loops
Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3077

llvm-svn: 203927
2014-03-14 14:22:49 +00:00
Alexey Samsonov
5eeea0b023 [C++11] Introduce ObjectFile::sections().
Summary:
This adds ObjectFile::section_iterator_range, that allows to write
range-based for-loops running over all sections of a given file.
Several files from lib/ are converted to the new interface. Similar fixes
should be applied to a variety of llvm-* tools.

Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3069

llvm-svn: 203799
2014-03-13 13:52:54 +00:00
Benjamin Kramer
c4a4a8061a Remove copy ctors that did the same thing as the default one.
The code added nothing but potentially disabled move semantics and made
types non-trivially copyable.

llvm-svn: 203563
2014-03-11 11:32:49 +00:00
Benjamin Kramer
c92e236041 [C++11] Replace LLVM-style type traits with C++11 standard ones.
No functionality change.

llvm-svn: 203242
2014-03-07 14:42:25 +00:00
Ahmed Charles
52ce0c101e Replace OwningPtr<T> with std::unique_ptr<T>.
This compiles with no changes to clang/lld/lldb with MSVC and includes
overloads to various functions which are used by those projects and llvm
which have OwningPtr's as parameters. This should allow out of tree
projects some time to move. There are also no changes to libs/Target,
which should help out of tree targets have time to move, if necessary.

llvm-svn: 203083
2014-03-06 05:51:42 +00:00
Ahmed Charles
afa05d8aeb [C++11] Add overloads for externally used OwningPtr functions.
This will allow external callers of these functions to switch over time
rather than forcing a breaking change all a once. These particular
functions were determined by building clang/lld/lldb.

llvm-svn: 202959
2014-03-05 10:27:34 +00:00
Craig Topper
7208edb1c2 [C++11] Add 'override' keyword to virtual methods that override their base class.
llvm-svn: 202946
2014-03-05 07:52:44 +00:00
Craig Topper
b0056a4ca7 Switch all uses of LLVM_OVERRIDE to just use 'override' directly.
llvm-svn: 202621
2014-03-02 09:09:27 +00:00
Alp Toker
e89523ae73 [C++11] Expand and eliminate the LLVM_ENUM_INT_TYPE() macro
llvm-svn: 202607
2014-03-02 03:20:38 +00:00
Alexey Samsonov
3fe9f1666d Turn static inline functions to inline, following Rafael's suggestion
llvm-svn: 202473
2014-02-28 08:23:09 +00:00
Rafael Espindola
e3d6551059 Now that it is possible, use the mangler in IRObjectFile.
A really simple patch marks the end of a lot of yak shaving :-)

llvm-svn: 202463
2014-02-28 02:17:23 +00:00
Rui Ueyama
0210a6b162 Rename coff_pdata_x64 -> coff_runtime_function_x64.
llvm-svn: 202460
2014-02-28 01:18:58 +00:00
Rui Ueyama
6dfb036b86 Object/COFF: Add a struct for the function table in .pdata.
This is the data structure listed on Microsoft PE/COFF Spec Revision 8.3, p. 80.
The name of the struct is not mentioned in the Microsoft PE/COFF spec, so I made
it up.

llvm-svn: 202438
2014-02-27 22:20:07 +00:00
Alexey Samsonov
dbc8026a28 Move getELFDynamicSymbolIterators to a public header.
llvm-svn: 202264
2014-02-26 12:51:19 +00:00
Rafael Espindola
43f88a22f0 Add a SymbolicFile interface between Binary and ObjectFile.
This interface allows IRObjectFile to be implemented without having dummy
methods for all section and segment related methods.

Both llvm-ar and llvm-nm are changed to use it. Unfortunately the mangler is
still not plugged in since it requires some refactoring to make a Module hold
a DataLayout.

llvm-svn: 201881
2014-02-21 20:10:59 +00:00
Rui Ueyama
c5b4b6b30f Object/COFF: Fix possible truncation bug.
VA can be 64 bit, as the image base can be larger than 4GB, so we need to
handle 64 bit VAs properly.

llvm-svn: 201803
2014-02-20 19:14:56 +00:00
Rui Ueyama
c9f1e84a78 llvm-objdump/COFF: Print SEH table addresses.
SEH table addresses are VA in COFF file. In this patch we convert VA to RVA
before printing it, because dumpbin prints them as RVAs.

llvm-svn: 201760
2014-02-20 06:51:07 +00:00
Rui Ueyama
e9728e0d5b Object/COFF: Fix padding between CSDVersion and EditList.
llvm-svn: 201756
2014-02-20 06:02:09 +00:00