4e71f81ec2
* sysdeps/unix/sysv/linux/dl-librecon.h (EXTRA_LD_ENVVARS): Refer to and move contents to ... (EXTRA_LD_ENVVARS_LINUX): ... this new macro. Add break for nonmatch. * sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS): Use it instead of duplicating its contents. (EXTRA_LD_ENVVARS): Likewise. Add break for nonmatch. 2002-12-09 Jakub Jelinek <jakub@redhat.com> * elf/dl-support.c (_dl_non_dynamic_init): Add DL_OSVERSION_INIT if defined. * sysdeps/unix/sysv/linux/dl-librecon.h (_dl_osversion_init): New function. (EXTRA_LD_ENVVARS): Use it. (DL_OSVERSION_INIT): Define. * sysdeps/unix/sysv/linux/i386/dl-librecon.h: Include linux dl-librecon.h. (EXTRA_LD_ENVVARS): Undef before defining. Use _dl_osversion_init.
62 lines
2 KiB
C
62 lines
2 KiB
C
/* Optional code to distinguish library flavours.
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Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _DL_LIBRECON_H
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#define _DL_LIBRECON_H 1
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static inline void __attribute__ ((unused, always_inline))
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_dl_osversion_init (char *assume_kernel)
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{
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unsigned long int i, j, osversion = 0;
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char *p = assume_kernel, *q;
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for (i = 0; i < 3; i++, p = q + 1)
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{
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j = __strtoul_internal (p, &q, 0, 0);
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if (j >= 255 || p == q || (i < 2 && *q && *q != '.'))
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{
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osversion = 0;
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break;
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}
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osversion |= j << (16 - 8 * i);
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if (!*q)
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break;
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}
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if (osversion)
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GL(dl_osversion) = osversion;
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}
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/* Recognizing extra environment variables. */
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#define EXTRA_LD_ENVVARS EXTRA_LD_ENVVARS_LINUX
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#define EXTRA_LD_ENVVARS_LINUX \
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case 13: \
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if (memcmp (envline, "ASSUME_KERNEL", 13) == 0) \
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_dl_osversion_init (&envline[14]); \
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break; \
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#define DL_OSVERSION_INIT \
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do { \
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char *assume_kernel = getenv ("LD_ASSUME_KERNEL"); \
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if (assume_kernel) \
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_dl_osversion_init (assume_kernel); \
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} while (0)
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#endif /* dl-librecon.h */
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