The section headers for XCOFF files have a subtype flag for Dwarf
sections. This PR updates obj2yaml, yaml2obj, and llvm-readobj so that
they recognize the subtype.
yaml2obj creates invalid object files even when the input was created by
obj2yaml using a valid object file. On the other hand, yaml2obj is used
to intentionally create invalid object files for testing purposes.
This update balances using specified input values when provided and
computing file offsets and sizes if necessary.
XCOFF encodes a symbol type and alignment in a single 8-bit field. It is
easier to read and write YAML files if the fields can be specified
separately. This PR causes obj2yaml to write the fields separately and
allows yaml2obj to read either the single combined field or the separate
fields.
Note that llvm::support::endianness has been renamed to
llvm::endianness while becoming an enum class as opposed to an
enum. This patch replaces support::{big,little,native} with
llvm::endianness::{big,little,native}.
Summary: The patch adds support for yaml2obj parsing auxiliary
symbols for XCOFF. Since the test cases of this patch are
interdependent with D113825 ([llvm-readobj][XCOFF] dump
auxiliary symbols), test cases of this patch will be committed
after D113825 is committed.
Reviewed By: jhenderson, DiggerLin
Differential Revision: https://reviews.llvm.org/D113552
Summary: Fix the build failure on MSVC by making the `T` and `U` of the function
'T llvm::Optional<T>::getValueOr<llvm::yaml::Hex32>(U &&) const &' the same.
Differential Revision: https://reviews.llvm.org/D111487
Summary:
This patch adds yaml2obj supporting for the auxiliary
file header of XCOFF.
Reviewed By: DiggerLin, jhenderson
Differential Revision: https://reviews.llvm.org/D111487
Summary: Add the SectionIndex field for symbol.
1: a symbol can reference a section by SectionName or SectionIndex.
2: a symbol can reference a section by both SectionName and SectionIndex.
3: if both Section and SectionIndex are specified, but the two values refer
to different sections, an error will be reported.
4: an invalid SectionIndex is allowed.
5: if a symbol references a non-existent section by SectionName, an error will be reported.
Reviewed By: jhenderson, Higuoxing
Differential Revision: https://reviews.llvm.org/D109566
Summary: The patch adds support for yaml2obj customizing the string table.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D107421
Summary: yaml2obj shouldn't create the string table that isn't needed
- doing so wastes time and disk space.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D106420
Summary: This patch, as a follow-up of D95505, adds
support for writing the long symbol name by implementing
the StringTable. Only XCOFF32 is suppoted now.
Reviewed By: jhenderson, shchenz
Differential Revision: https://reviews.llvm.org/D103455
Summary: Some structs like FileHeader32/SectionHeader32
defined in llvm/include/llvm/BinaryFormat/XCOFF.h seem
unnecessary, because we only need their size. So this
patch removes them and defines size constants directly.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D103901
Summary: The patch implements the mapping of the Yaml
information to XCOFF object file to enable the yaml2obj
tool for XCOFF. Currently only 32-bit is supported.
Reviewed By: jhenderson, shchenz
Differential Revision: https://reviews.llvm.org/D95505
