NetBSD

History

abs c2fcad8607 If /etc/ld.so.conf contains an invalid sysctl name any dynamically executable that uses the library on that line has the rather cryptic "sysctl" printed when it starts executing. Switch to (_PATH_LD_HINTS": unknown sysctl for %s", name); Discovered after someone copied /etc from an i386 to a sparc64 box.		2002-07-18 14:46:11 +00:00
..
arch	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
Makefile	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
README	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
debug.c	__STDC__ is always defined on NetBSD.	2002-05-26 00:02:06 +00:00
debug.h	KNF	1999-03-01 16:40:07 +00:00
headers.c	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
ld.elf_so.1	Generate <>& symbolically. I'm avoiding .../dist/... directories for now.	2002-02-08 01:21:55 +00:00
load.c	If /etc/ld.so.conf contains an invalid sysctl name any dynamically	2002-07-18 14:46:11 +00:00
malloc.c	MAP_COPY -> MAP_PRIVATE	1999-06-17 21:09:47 +00:00
map_object.c	SIMPLEQ rototill:	2002-06-01 23:50:52 +00:00
paths.c	Don't include <uvm/uvm_param.h>. It does not appear to be needed by anything.	2001-05-24 17:41:42 +00:00
reloc.c	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
rtld.c	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
rtld.h	Add support for dynamic linking on HP PA-RISC.	2002-07-10 15:12:33 +00:00
rtldenv.h	KNF	1999-03-01 16:40:07 +00:00
search.c	Adjust a comment after the Great Renaming.	2000-07-27 10:44:39 +00:00
symbol.c	SIMPLEQ rototill:	2002-06-01 23:50:52 +00:00
sysident.h	Don't use multi-line string literals.	2001-06-19 12:07:21 +00:00
xmalloc.c	KNF	1999-03-01 16:40:07 +00:00
xprintf.c	__STDC__ is always defined on NetBSD.	2002-05-26 00:02:06 +00:00

README

$NetBSD: README,v 1.9 2002/07/10 15:12:34 fredette Exp $

BUGS/PROBLEMS:

* rtld.c around line 184:

	#iffdef __alpha__
	/* XXX XXX XXX */
	_rtld_objself.pltgot = NULL;
	#endif

  It's a workaround for a linker bug, and will go away when the linker is
  fixed.

* The method used to relocate ld.so is shoddy and fragile.  Currently it's
  something like:

  alpha, hppa, powerpc:
	(1) assembly code relocates RELATIVE relocations in the GOT
	    (on some ports, all relative relocations; this will probably
	    have to be #ifdef'd in reloc.c), assuming that everything
	    in the GOT is a RELATIVE relocation.  On the hppa, this
	    is actually done in C code.

	(2) alpha, hppa only: C code relocates the rest of the loader,
	    excluding those RELATIVE relocations already done (via an ...
	    iffy heuristic).

  arm, i386, m68k, sparc:
	(1) C code relocates the loader in _rtld_init() carefully so that
	    it does not touch any globals.

  mips:
	(1) loads ld.elf_so at 0, so no relocating is necessary.

  Something better (like that the glibc ELF ld.so does) should be done
  eventually, where a single set of C code is compiled twice, once for
  normal use, and once to be used to relocate the shared linker.  No
  relocations should be processed in assembly language.

* On the Alpha, this code Really needs to be checked to be sure that
  it doesn't make calls that could use FP, while doing lazy binding.

TO DO:

* Support for coexistance of 32-bit and 64-bit ELF on platforms that can
  do that.

* Support for relocating ld.elf_so on mips