src/libexec/rtld-elf, branch release/10.1.0

MFC r270798:

2014-09-12T16:22:01Z

Process STT_GNU_IFUNC when doing non-plt relocations. MFC r270802: Only do the second pass over non-plt relocations when the first pass found IFUNCs. Approved by: re (gjb)

MFC r270803:

2014-09-01T08:02:23Z

Document the whole settings needed to build a debug version of rtld.

MFC r270256:

2014-08-28T18:11:05Z

Always check the limits of array index variables before using them. Obtained from: DragonFlyBSD

MFC r265456, r265578:

2014-08-07T18:36:47Z

Add a postinit debugger hook to rtld. This will be used by dtrace(1) to halt the victim process before its entry point is called, at which point probes and DOF data are registered with the kernel. The r_debug_state hook cannot be used for this purpose, as it is called before the program's init routines are invoked and in particular before DOF data is registered (via drti.o).

MFC r266609:

2014-06-07T02:45:24Z

Change the _rtld_atfork() to lock the bind lock in write mode.

MFC r266411:

2014-05-25T00:57:07Z

Fix LD_LIBMAP.

MFC r264481:

2014-04-21T02:55:27Z

Add dwarf annotations to the amd64 _rtld_bind_start to allow debuggers to unwind around the calls from PLT to binder.

MFC r262277:

2014-02-27T02:36:09Z

malloc_aligned() may not leave enough space for pointer to allocated memory, saving the pointer will overwrite bytes belongs to another memory block unexpectly, to fix the problem, use (allocated address + sizeof(void *)) as initial value, and slip to next aligned address, so maximum extra bytes is sizeof(void *) + align - 1. Tested by: Andre Albsmeier < mail at ma17 dot ata dot myota dot orgndre > MFC r262334: Increase alignment to size of pointer if the alignment is too small. Some modules do not align data at least to size of pointer, they uses a smaller alignment, but our pointer should be aligned to its native boundary, otherwise on some platforms, hardware alignment checking will cause bus error.

MFC: r262136

2014-02-24T08:21:49Z

Remove the 3rd clause ("advertising clause") of the BSD license as permitted by the University of Berkeley on July 22, 1999. Reviewed by: imp

MFC r259044:

2013-12-13T06:06:08Z

For variant II static TLS, properly align tls segments. MFC r259072: Cast Elf_Addr to void * to match the free_aligned() argument type.