Commit Graph

12 Commits

Author SHA1 Message Date
Stephen Wilson 499b40e8a7 elf: synthesize symbols for PLT entries
When populating symbol tables ObjectFileELF now generates a set of synthetic
trampoline symbols.  These new symbols correspond to entries in the program
linkage table and have a (possibly mangled) name identifying the corresponding
symbol in some DSO.  These symbols will be used by the DynamicLoader loader
plugin on Linux to provide thread plans when execution flows from one DSO to
another.

llvm-svn: 128550
2011-03-30 16:07:05 +00:00
Greg Clayton e996fd30be LLDB now has "Platform" plug-ins. Platform plug-ins are plug-ins that provide
an interface to a local or remote debugging platform. By default each host OS
that supports LLDB should be registering a "default" platform that will be
used unless a new platform is selected. Platforms are responsible for things
such as:
- getting process information by name or by processs ID
- finding platform files. This is useful for remote debugging where there is 
  an SDK with files that might already or need to be cached for debug access.
- getting a list of platform supported architectures in the exact order they
  should be selected. This helps the native x86 platform on MacOSX select the
  correct x86_64/i386 slice from universal binaries.
- Connect to remote platforms for remote debugging
- Resolving an executable including finding an executable inside platform
  specific bundles (macosx uses .app bundles that contain files) and also
  selecting the appropriate slice of universal files for a given platform.

So by default there is always a local platform, but remote platforms can be
connected to. I will soon be adding a new "platform" command that will support
the following commands:
(lldb) platform connect --name machine1 macosx connect://host:port
Connected to "machine1" platform.
(lldb) platform disconnect macosx

This allows LLDB to be well setup to do remote debugging and also once 
connected process listing and finding for things like:
(lldb) process attach --name x<TAB>

The currently selected platform plug-in can now auto complete any available
processes that start with "x". The responsibilities for the platform plug-in
will soon grow and expand.

llvm-svn: 127286
2011-03-08 22:40:15 +00:00
Jim Ingham bd3f260698 I didn't notice there was already an ObjectFile::GetEntryPoint. Move that over to GetEntryPointAddress 'cause that's more consistent with other functions in ObjectFile, do the mutatis mutandi and also in the ELF case I return a section offset address rather than a bare load address.
llvm-svn: 127205
2011-03-08 01:54:01 +00:00
Jim Ingham 672e6f59c5 Add a method "GetEntryPoint" to the ObjectFile class, and implement it on MachO & ELF - though the ELF implementation is probably a little weak. Then use this method in place of directly looking for "start" in the ThreadPlanCallFunction constructor to find the stopping point for our function evaluation.
llvm-svn: 127194
2011-03-07 23:44:08 +00:00
Stephen Wilson 3f4200fd9d linux: Remove a local ObjectFileELF version of GetArchitecture.
Also fix a bug where we were not lazily parsing the ELF header and thus
returning an ArchSpec with invalid cpu type components.  Initialize the cpu
subtype as LLDB_INVALID_CPUTYPE for compatibility with the new ArchSpec
implementation.

llvm-svn: 126405
2011-02-24 19:16:15 +00:00
Greg Clayton 514487e806 Made lldb_private::ArchSpec contain much more than just an architecture. It
now, in addition to cpu type/subtype and architecture flavor, contains:
- byte order (big endian, little endian)
- address size in bytes
- llvm::Triple for true target triple support and for more powerful plug-in
  selection.

llvm-svn: 125602
2011-02-15 21:59:32 +00:00
Greg Clayton 53239f00b5 Moved FileSpec into the Host layer since it will vary from host to host.
We have a common unix implementation in lldb/source/Host/common/FileSpec.cpp.

llvm-svn: 125078
2011-02-08 05:05:52 +00:00
Stephen Wilson 2ab0a5858f Implement GetEntryPoint, GetImageInfoAddress and GetArchitecture for ObjectFileELF.
llvm-svn: 123496
2011-01-15 00:08:44 +00:00
Greg Clayton 710dd5aebf Spelling changes applied from lldb_spelling.diffs from Bruce Mitchener.
Thanks Bruce!

llvm-svn: 123083
2011-01-08 20:28:42 +00:00
Jim Ingham 5aee162f97 Change Target & Process so they can really be initialized with an invalid architecture.
Arrange that this then gets properly set on attach, or when a "file" is set.
Add a completer for "process attach -n".

Caveats: there isn't currently a way to handle multiple processes with the same name.  That
will have to wait on a way to pass annotations along with the completion strings.

llvm-svn: 110624
2010-08-09 23:31:02 +00:00
Stephen Wilson f325ba9d45 Combine 32 and 64 bit ELF readers.
This patch provides a generic ELF reader plugin to handle both 32 and 64 bit
formats.

llvm-svn: 108292
2010-07-13 23:07:23 +00:00
Chris Lattner 30fdc8d841 Initial checkin of lldb code from internal Apple repo.
llvm-svn: 105619
2010-06-08 16:52:24 +00:00