src/libexec/rtld-elf/xmalloc.c, branch upstream/11.2.0

Increase alignment to size of pointer if the alignment is too small.

2014-02-22T11:06:48Z

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.

malloc_aligned() may not leave enough space for pointer to allocated memory,

2014-02-21T03:36:16Z

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 >

Build an allocator for the aligned memory on top of the rtld-private

2013-12-06T21:30:31Z

malloc. Reviewed by: kan Sponsored by: The FreeBSD Foundation MFC after: 1 week

Implement xstrdup() using strlen()/xmalloc()/memcpy() already

2012-03-23T12:04:44Z

presented in rtld, instead of pulling in libc strdup(). Submitted by: bde MFC after: 2 weeks

Use xmalloc() instead of malloc() in the places where malloc() calls

2012-03-22T14:20:51Z

are assumed to not fail. Make the xcalloc() calling conventions follow the calloc(3) calling conventions and replace unchecked calls to calloc() with calls to xcalloc(). Remove redundand declarations from xmalloc.c, which are already present in rtld.h. Reviewed by: kan Discussed with: bde MFC after: 2 weeks

Rtld links with the specially built pic static libc library to get some

2011-08-24T20:05:13Z

C runtime services, like printf(). Unfortunately, the multithread-safeness measures in the libc do not work in rtld environment. Rip the kernel printf() implementation and use it in the rtld instead of libc version. This printf does not require any shared global data and thus is mt-safe. Systematically use rtld_printf() and related functions, remove the calls to err(3). Note that stdio is still pulled from libc due to libmap implementaion using fopen(). This is safe but unoptimal, and can be changed later. Reported and tested by: pgj Diagnosed and reviewed by: kan (previous version) Approved by: re (bz)

Add function prototypes.

2003-06-19T05:28:26Z

$Id$ -> $FreeBSD$

1999-08-28T00:22:10Z

Import the ELF dynamic linker. This is the ElfKit version with

1998-03-07T19:24:35Z

quite a few enhancements and bug fixes. There are still some known deficiencies, but it should be adequate to get us started with ELF. Submitted by: John Polstra