Commit Graph

22 Commits

Author SHA1 Message Date
Rafael Espindola 1675d51eac Run llvm/utils/sort_includes.py in a few files.
This will reduce the noise in a followup patch.

llvm-svn: 210800
2014-06-12 17:12:28 +00:00
Nick Kledzik 936d5205bb [mach-o] fix use of resolver functions to not cause duplicate sections.
The previous commit uncovered a bug in the mach-o writer whereby two __text
sections were created.  But the test case did not catch that.  So I updated
the test case to run the linker a second time, reading the output of the
first pass.  

llvm-svn: 210624
2014-06-11 01:30:55 +00:00
Nick Kledzik 6085539bed [mach-o] add support for parsing resolver functions
llvm-svn: 210612
2014-06-11 00:24:16 +00:00
Nick Kledzik ec140834d4 [mach-o] refactor mach-o output section selection to be table driven.
In -r mode the sections use the table used to parse .o files.  Otherwise
use final exectuable table.  No functionality change.

llvm-svn: 210506
2014-06-10 01:50:00 +00:00
Nick Kledzik acfad80250 [mach-o] Add support for custom sections
llvm-svn: 209928
2014-05-30 22:51:04 +00:00
Nick Kledzik f317d66c31 [mach-0] Add support for parsing compact unwind info section
llvm-svn: 209865
2014-05-29 23:50:48 +00:00
Nick Kledzik b367c25f28 [mach-o] Add support for parsing __eh_frame section. Generalize support for whether symbols in a section are ignored or illegal
llvm-svn: 209858
2014-05-29 23:07:20 +00:00
Nick Kledzik 9ede702bc4 [mach-o] Add support for parsing CFString sections
llvm-svn: 209844
2014-05-29 20:44:21 +00:00
Nick Kledzik a4a08d31cf [mach-o] Add support for initializers and terminators in object files
llvm-svn: 209700
2014-05-27 23:20:52 +00:00
Nick Kledzik 3e90e5f187 [mach-o] Add support for reading utf16 string literal sections
llvm-svn: 209684
2014-05-27 20:25:06 +00:00
Nick Kledzik a0c13a2420 [mach-o] parse literal sections into atoms
llvm-svn: 209379
2014-05-22 01:42:06 +00:00
Nick Kledzik 61fdef6086 [mach-o] Add support and test cases for parsing tentative definitions
llvm-svn: 208919
2014-05-15 20:59:23 +00:00
Rui Ueyama b461b1c785 s/llvm::dyn_cast/dyn_cast/
llvm-svn: 205404
2014-04-02 06:54:46 +00:00
Shankar Easwaran 3d8de47f76 Fix trailing whitespace.
llvm-svn: 200182
2014-01-27 03:09:26 +00:00
Nick Kledzik 6edd722a2c [mach-o] enable mach-o and native yaml to be intermixed
The main goal of this patch is to allow "mach-o encoded as yaml" and "native
encoded as yaml" documents to be intermixed.  They are distinguished via 
yaml tags at the start of the document.  This will enable all mach-o test cases
to be written using yaml instead of checking in object files.

The Registry was extend to allow yaml tag handlers to be registered.  The
mach-o Reader adds a yaml tag handler for the tag "!mach-o". 

Additionally, this patch fixes some buffer ownership issues.  When parsing
mach-o binaries, the mach-o atoms can have pointers back into the memory 
mapped .o file.  But with yaml encoded mach-o, name and content are ephemeral, 
so a copyRefs parameter was added to cause the mach-o atoms to make their
own copy.  

llvm-svn: 198986
2014-01-11 01:07:43 +00:00
Joey Gouly ceb16dedef [MachO] Begin to add some MachO specific File/Atoms, and add the start of
normalizedToAtoms.

llvm-svn: 198459
2014-01-03 23:12:02 +00:00
Joey Gouly 9d263e0afe Fix some indentation issues, I saw while reading this file.
llvm-svn: 198024
2013-12-25 19:39:08 +00:00
Rui Ueyama 170a1a892e Run clang-format on r197727.
llvm-svn: 197788
2013-12-20 07:48:29 +00:00
Nick Kledzik e555277780 [lld] Introduce registry and Reference kind tuple
The main changes are in:
  include/lld/Core/Reference.h
  include/lld/ReaderWriter/Reader.h
Everything else is details to support the main change.

1) Registration based Readers
Previously, lld had a tangled interdependency with all the Readers.  It would
have been impossible to make a streamlined linker (say for a JIT) which
just supported one file format and one architecture (no yaml, no archives, etc).
The old model also required a LinkingContext to read an object file, which
would have made .o inspection tools awkward.

The new model is that there is a global Registry object. You programmatically 
register the Readers you want with the registry object. Whenever you need to 
read/parse a file, you ask the registry to do it, and the registry tries each 
registered reader.

For ease of use with the existing lld code base, there is one Registry
object inside the LinkingContext object. 


2) Changing kind value to be a tuple
Beside Readers, the registry also keeps track of the mapping for Reference
Kind values to and from strings.  Along with that, this patch also fixes
an ambiguity with the previous Reference::Kind values.  The problem was that
we wanted to reuse existing relocation type values as Reference::Kind values.
But then how can the YAML write know how to convert a value to a string? The
fix is to change the 32-bit Reference::Kind into a tuple with an 8-bit namespace
(e.g. ELF, COFFF, etc), an 8-bit architecture (e.g. x86_64, PowerPC, etc), and
a 16-bit value.  This tuple system allows conversion to and from strings with 
no ambiguities.

llvm-svn: 197727
2013-12-19 21:58:00 +00:00
Nick Kledzik 020fa7f080 [mach-o] add llvm_unreachable
llvm-svn: 194172
2013-11-06 22:18:09 +00:00
Nick Kledzik 020a49c95d [mach-o] fix DEBUG_WITH_TYPE to compile without warnings in non-debug case
llvm-svn: 194171
2013-11-06 21:57:52 +00:00
Nick Kledzik e34182f396 [mach-o] binary reader and writer
This patch adds support for converting normalized mach-o to and from binary
mach-o. It also changes WriterMachO (which previously directly wrote a 
mach-o binary given a set of Atoms) to instead do it in two steps. The first 
step uses normalizedFromAtoms() to convert Atoms to normalized mach-o, and the
second step uses writeBinary() which to generate the mach-o binary file.  

llvm-svn: 194167
2013-11-06 21:36:55 +00:00