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2001-04-10  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	* elf/elf.h (AT_DCACHEBSIZE, AT_ICACHEBSIZE, AT_UCACHEBSIZE,
	AT_IGNOREPPC): New defines.
	* sysdeps/generic/dl-sysdep.c (_dl_show_auxv): Print them.
	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_STD_AUXV):
	Define for newer powerpc kernels.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Use the standard
	DL_FIND_ARG_COMPONENTS if __ASSUME_STD_AUXV is defined.
This commit is contained in:
Ulrich Drepper
2001-04-11 04:42:14 +00:00
parent 07bccb4670
commit 390911beb3
5 changed files with 75 additions and 43 deletions
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55
sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c
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@ -1,5 +1,5 @@
/* Operating system support for run-time dynamic linker. Linux/PPC version.
Copyright (C) 1997, 1998 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -18,33 +18,38 @@
Boston, MA 02111-1307, USA. */
#include "config.h"
#include "kernel-features.h"
#ifndef __ASSUME_STD_AUXV
/* The PowerPC's auxiliary argument block gets aligned to a 16-byte
boundary. This is history and impossible to change compatibly. */
#define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \
do { \
char **_tmp; \
size_t _test; \
(argc) = *(long *) cookie; \
(argv) = (char **) cookie + 1; \
(envp) = (argv) + (argc) + 1; \
for (_tmp = (envp); *_tmp; ++_tmp) \
continue; \
/* The following '++' is important! */ \
++_tmp; \
\
_test = (size_t)_tmp; \
_test = (_test + 0xf) & ~0xf; \
/* Under some circumstances, MkLinux (up to at least DR3a5) \
omits the padding. To work around this, we make a \
basic sanity check of the argument vector. Of \
course, this means that in future, the argument \
vector will have to be laid out to allow for this \
test :-(. */ \
if (((ElfW(auxv_t) *)_test)->a_type <= 0x10) \
_tmp = (char **)_test; \
(auxp) = (ElfW(auxv_t) *) _tmp; \
#define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \
do { \
char **_tmp; \
size_t _test; \
(argc) = *(long int *) cookie; \
(argv) = (char **) cookie + 1; \
(envp) = (argv) + (argc) + 1; \
for (_tmp = (envp); *_tmp; ++_tmp) \
continue; \
/* The following '++' is important! */ \
++_tmp; \
\
_test = (size_t)_tmp; \
_test = (_test + 0xf) & ~0xf; \
/* Under some circumstances, MkLinux (up to at least DR3a5) \
omits the padding. To work around this, we make a \
basic sanity check of the argument vector. Of \
course, this means that in future, the argument \
vector will have to be laid out to allow for this \
test :-(. */ \
if (((ElfW(auxv_t) *)_test)->a_type <= 0x10) \
_tmp = (char **)_test; \
(auxp) = (ElfW(auxv_t) *) _tmp; \
} while (0)
#endif
#include <sysdeps/unix/sysv/linux/dl-sysdep.c>