NetBSD

History

jonathan fd7cb41920 gdb's shared-lib mapping code in solib.c has #ifdef dependencies on DT_MIPS_RLD_MAP being defined on mips targets with shared libs. Since netbsd's gdb config.h defines HAVE_LINK_H, link.h is expected to provide it. So #include <machine/elf_machdep.h> to make it so.		1998-10-30 05:43:40 +00:00
..
alpha	use CPPFLAGS instead of CFLAGS	1997-10-22 05:45:08 +00:00
arch	${DESTDIR} isn't needed - which isn't what the example in	1998-05-11 19:30:15 +00:00
mips	${DESTDIR} isn't needed - which isn't what the example in	1998-05-11 19:30:15 +00:00
Makefile	remove MD asm as(1) comments from sysident.h, placing them in a comment	1998-09-13 03:50:31 +00:00
README	Add support for mips.	1998-03-25 04:12:32 +00:00
debug.c	First cut at an ELF shared loader. Originally from John Polstra's FreeBSD elf	1996-12-16 20:37:55 +00:00
debug.h	First cut at an ELF shared loader. Originally from John Polstra's FreeBSD elf	1996-12-16 20:37:55 +00:00
headers.c	Add support for mips.	1998-03-25 04:12:32 +00:00
link.h	gdb's shared-lib mapping code in solib.c has #ifdef dependencies on	1998-10-30 05:43:40 +00:00
load.c	First cut at an ELF shared loader. Originally from John Polstra's FreeBSD elf	1996-12-16 20:37:55 +00:00
malloc.c	WARNS?=1	1997-10-08 08:55:35 +00:00
map_object.c	Fill in missing (default) mmap(2) flags.	1998-02-20 09:27:18 +00:00
paths.c	WARNS?=1	1997-10-08 08:55:35 +00:00
reloc.c	Add support for mips.	1998-03-25 04:12:32 +00:00
rtld.c	Rewrite AuxInfo handling to track AuxID changes in sys/exec_elf.h.	1998-10-07 02:53:27 +00:00
rtld.h	Allow PAGESIZE to be set via a -D option to cc (CLBYTES not a constant on	1998-07-01 20:42:47 +00:00
rtldenv.h	WARNS?=1	1997-10-08 08:55:35 +00:00
search.c	use 'normal' ELF library lookup rules	1997-02-17 19:32:05 +00:00
symbol.c	Add support for mips.	1998-03-25 04:12:32 +00:00
sysident.h	At least make the comments accurate.	1998-09-13 05:53:34 +00:00
xmalloc.c	First cut at an ELF shared loader. Originally from John Polstra's FreeBSD elf	1996-12-16 20:37:55 +00:00
xprintf.c	First cut at an ELF shared loader. Originally from John Polstra's FreeBSD elf	1996-12-16 20:37:55 +00:00

README

$NetBSD: README,v 1.2 1998/03/25 04:13:01 mhitch Exp $

BUGS/PROBLEMS:

* rtld.c around line 147:

	#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.

* Formerly, _DYNAMIC was _GLOBAL_OFFSET_TABLE_[0], but that isn't true with
  newer snapshots of gas/binutils (at least on the Alpha), which support
  multiple GOTs.  That's what the OLD_GOT #ifdefs are about.
  
* The method used to relocate ld.so is shoddy and fragile.  Currently it's
  something like:

	(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.

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

  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 other platforms

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

* KNF

* Possible support for ldd (standalone operation) and program loading
  a la the glibc shared loader.

* Support for relocating ld.elf_so on mips