1) DIContext is now able to return function name for a given instruction address (besides file/line info).
2) llvm-dwarfdump accepts flag --functions that prints the function name (if address is specified by --address flag).
3) test case that checks the basic functionality of llvm-dwarfdump added

llvm-svn: 159512

Still not fixed in the standard ;)

llvm-svn: 154044

llvm-svn: 148578

llvm-svn: 146960

llvm-svn: 146409

llvm-svn: 145420

llvm-svn: 143814

that breaks on big-endian machines.

I have to clean up the 32/64 bit confusion in libDebugInfo some day.

llvm-svn: 143812

llvm-svn: 143799

llvm-svn: 143634

llvm-svn: 141484

llvm-svn: 141483

llvm-svn: 140260

llvm-svn: 139892

llvm-svn: 139859

llvm-svn: 139846

DWARF: Put all the pieces we have together and provide a single accessor to DIContext that provides line information when given an address.

llvm-svn: 139836

DWARF: Remove accessors that parse the whole line table section in one go, this can't possibly work.

The address size is specified by the compile unit associated with a line table, there is no global address size.

llvm-svn: 139835

llvm-svn: 139808

llvm-svn: 139799

llvm-svn: 139786

Thanks Nick!

llvm-svn: 139778

llvm-svn: 139777

llvm-svn: 139776

llvm-svn: 139775

llvm-svn: 139774

llvm-svn: 139773

The llvm-dwarfdump output isn't very verbose yet.

llvm-svn: 139771

Ported from LLDB.

llvm-svn: 139732

llvm-svn: 139712

llvm-svn: 139705

llvm-dwarfdump: Make the "is debug info section" heuristic stricter so it doesn't accidentaly picks up the wrong section.

Also add some validation code to the aranges section parser.

Fixes PR10926.

llvm-svn: 139701

llvm-svn: 139684

This is only one half of it, the part that caches address ranges from the DIEs when .debug_aranges is
not available will be ported soon.

llvm-svn: 139680

llvm-svn: 139671

llvm-svn: 139646

llvm-svn: 139628

This introduces a new library to LLVM: libDebugInfo. It will provide debug information
parsing to LLVM. Much of the design and some of the code is taken from the LLDB project.

It also contains an llvm-dwarfdump tool that can dump the abbrevs and DIEs from an
object file. It can be used to write tests for DWARF input and output easily.

llvm-svn: 139627