Summary: This patch refactors the DWARFYAML code for dumping compile units to use a visitor pattern. Using this design will, in the future, enable the DWARF YAML code to perform analysis and mutations of the DWARF DIEs. An example of such mutations would be calculating the length of a compile unit and updating the CU's Length field before writing the DIE. This support will make it easier to craft or modify DWARF tests by hand.
Reviewers: lhames
Subscribers: mgorny, fhahn, jgosnell, aprantl, llvm-commits
Differential Revision: https://reviews.llvm.org/D30357
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297067 91177308-0d34-0410-b5e6-96231b3b80d8
This patch pulls the yaml2dwarf code out of yaml2obj into a new set of DWARF emitter functions in the DWARFYAML namespace. This will enable the YAML->DWARF code to be used inside DWARF tests by populating the DWARFYAML structs and calling the Emitter functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291828 91177308-0d34-0410-b5e6-96231b3b80d8
Since DWARF formatting is agnostic to the object file it is stored in, it doesn't make sense for this to be in the MachOYAML implementation. Pulling it into its own namespace means we could modify the ELF and COFF YAML tools to emit DWARF as well.
In a follow-up patch I will better abstract this in obj2yaml and yaml2obj so that the DWARF bits in the tools can be re-used too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288984 91177308-0d34-0410-b5e6-96231b3b80d8
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273915 91177308-0d34-0410-b5e6-96231b3b80d8
