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Author SHA1 Message Date
Chris Bieneman 8ff0c11357 [yaml2obj] Remove --format option in favor of YAML tags 
Summary:
Our YAML library's handling of tags isn't perfect, but it is good enough to get rid of the need for the --format argument to yaml2obj. This patch does exactly that.

Instead of requiring --format, it infers the format based on the tags found in the object file. The supported tags are:

!ELF
!COFF
!mach-o
!fat-mach-o

I have a corresponding patch that is quite large that fixes up all the in-tree test cases.

Reviewers: rafael, Bigcheese, compnerd, silvas

Subscribers: compnerd, llvm-commits

Differential Revision: http://reviews.llvm.org/D21711

llvm-svn: 273915
 2016-06-27 19:53:53 +00:00
Simon Atanasyan 2c5b22ab81 [ELF] Explicitly configure sections alignment in the tests. NFC 
llvm-svn: 241834
 2015-07-09 18:22:55 +00:00
Simon Atanasyan 99cd1fb012 [ELFYAML] Provide default value 0 for YAML relocation addendum field 
Follow up to r227318.

llvm-svn: 227422
 2015-01-29 06:56:24 +00:00
Simon Atanasyan e13a9624c2 [ELFYAML] Provide explicit value for relocation addendums in the test 
The `Addend` is an optional field of the `Relocation` YAML record. But
we do not provide its default value while reading it from a YAML file
and so it might keep uninitialized.

I am going to fix the code by a separate commit. We might either make
this field mandatory (at least for .rela sections) or specify 0 as
a default value explicitly.

llvm-svn: 227318
 2015-01-28 16:22:50 +00:00
Simon Atanasyan 5d19c67a68 [ELFYAML] Support mips64 relocation record format in yaml2obj/obj2yaml 
MIPS64 ELF file has a very specific relocation record format. Each
record might specify up to three relocation operations. So the `r_info`
field in fact consists of three relocation type sub-fields and optional
code of "special" symbols.

http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf
page 40

The patch implements support of the MIPS64 relocation record format in
yaml2obj/obj2yaml tools by introducing new optional Relocation fields:
Type2, Type3, and SpecSym. These fields are recognized only if the
object/YAML file relates to the MIPS64 target.

Differential Revision: http://reviews.llvm.org/D7136

llvm-svn: 227044
 2015-01-25 13:29:25 +00:00