+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.
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. */
{
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);
#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
/* 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
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>
projects / platform / upstream / linaro-glibc.git / commitdiff