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Update. 

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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10
ChangeLog
View File

@ -1,3 +1,13 @@
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.
2000-4-10 kaz Kojima <kkojima@rr.iij4u.or.jp>
* sysdeps/sh/stackinfo.h: New file.

9
elf/elf.h
View File

@ -893,6 +893,15 @@ typedef struct
performed by the kernel. */
#define AT_FPUCW 18 /* Used FPU control word. */
/* Cache block sizes. */
#define AT_DCACHEBSIZE 19 /* Data cache block size. */
#define AT_ICACHEBSIZE 20 /* Instruction cache block size. */
#define AT_UCACHEBSIZE 21 /* Unified cache block size. */
/* A special ignored value for PPC, used by the kernel to control the
interpretation of the AUXV. Must be > 16. */
#define AT_IGNOREPPC 22 /* Entry should be ignored */
/* Note section contents. Each entry in the note section begins with
a header of a fixed form. */

39
sysdeps/generic/dl-sysdep.c
View File

@ -226,27 +226,30 @@ _dl_show_auxv (void)
{
static const struct
{
const char label[16];
const char label[20];
enum { dec, hex, str } form;
} auxvars[] =
{
[AT_EXECFD - 2] = { "AT_EXECFD: ", dec },
[AT_PHDR - 2] = { "AT_PHDR: 0x", hex },
[AT_PHENT - 2] = { "AT_PHENT: ", dec },
[AT_PHNUM - 2] = { "AT_PHNUM: ", dec },
[AT_PAGESZ - 2] = { "AT_PAGESZ: ", dec },
[AT_BASE - 2] = { "AT_BASE: 0x", hex },
[AT_FLAGS - 2] = { "AT_FLAGS: 0x", hex },
[AT_ENTRY - 2] = { "AT_ENTRY: 0x", hex },
[AT_NOTELF - 2] = { "AT_NOTELF: ", hex },
[AT_UID - 2] = { "AT_UID: ", dec },
[AT_EUID - 2] = { "AT_EUID: ", dec },
[AT_GID - 2] = { "AT_GID: ", dec },
[AT_EGID - 2] = { "AT_EGID: ", dec },
[AT_PLATFORM - 2] = { "AT_PLATFORM: ", str },
[AT_HWCAP - 2] = { "AT_HWCAP: ", hex },
[AT_CLKTCK - 2] = { "AT_CLKTCK: ", dec },
[AT_FPUCW - 2] = { "AT_FPUCW: ", hex }
[AT_EXECFD - 2] = { "AT_EXECFD: ", dec },
[AT_PHDR - 2] = { "AT_PHDR: 0x", hex },
[AT_PHENT - 2] = { "AT_PHENT: ", dec },
[AT_PHNUM - 2] = { "AT_PHNUM: ", dec },
[AT_PAGESZ - 2] = { "AT_PAGESZ: ", dec },
[AT_BASE - 2] = { "AT_BASE: 0x", hex },
[AT_FLAGS - 2] = { "AT_FLAGS: 0x", hex },
[AT_ENTRY - 2] = { "AT_ENTRY: 0x", hex },
[AT_NOTELF - 2] = { "AT_NOTELF: ", hex },
[AT_UID - 2] = { "AT_UID: ", dec },
[AT_EUID - 2] = { "AT_EUID: ", dec },
[AT_GID - 2] = { "AT_GID: ", dec },
[AT_EGID - 2] = { "AT_EGID: ", dec },
[AT_PLATFORM - 2] = { "AT_PLATFORM: ", str },
[AT_HWCAP - 2] = { "AT_HWCAP: ", hex },
[AT_CLKTCK - 2] = { "AT_CLKTCK: ", dec },
[AT_FPUCW - 2] = { "AT_FPUCW: ", hex },
[AT_DCACHEBSIZE - 2] = { "AT_DCACHEBSIZE: 0x", hex },
[AT_ICACHEBSIZE - 2] = { "AT_ICACHEBSIZE: 0x", hex },
[AT_UCACHEBSIZE - 2] = { "AT_UCACHEBSIZE: 0x", hex }
};
unsigned int idx = (unsigned int) (av->a_type - 2);

5
sysdeps/unix/sysv/linux/kernel-features.h
View File

@ -163,3 +163,8 @@
#if __LINUX_KERNEL_VERSION >= 132097
# define __ASSUME_AT_PAGESIZE 1
#endif
/* Starting with 2.4.? kernels PPC passes the AUXV in the standard way. */
#if __LINUX_KERNEL_VERSION >= (132096+99) && defined __powerpc__
# define __ASSUME_STD_AUXV 1
#endif

55
sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c
View File

@ -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>