df45b31e81
2002-12-18 Ulrich Drepper <drepper@redhat.com> * descr.h (struct pthread) [NEED_DL_SYSINFO]: Add sysinfo member. * sysdeps/i386/tls.h (tcbhead_t): Add sysinfo member. Define SYSINFO_OFFSEET if NEED_DL_SYSINFO is defined. (INIT_SYSINFO): New #define. (TLS_TP_INIT): Use INIT_SYSINFO. * sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init): At test to make sure SYSINFO_OFFSET value is correct. * sysdeps/unix/sysv/linux/i386/dl-sysdep.h: New file.
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* brk system call for Linux/i386.
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Copyright (C) 1995, 1996, 2000, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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#include <errno.h>
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#include <unistd.h>
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#include <sysdep.h>
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#include <bp-checks.h>
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/* This must be initialized data because commons can't have aliases. */
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void *__curbrk = 0;
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/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
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to work around different old braindamage in the old Linux ELF dynamic
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linker. */
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weak_alias (__curbrk, ___brk_addr)
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int
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__brk (void *addr)
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{
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void *__unbounded newbrk;
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newbrk = INLINE_SYSCALL (brk, 1, __ptrvalue (addr));
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__curbrk = newbrk;
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if (newbrk < addr)
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{
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__set_errno (ENOMEM);
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return -1;
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}
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return 0;
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}
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weak_alias (__brk, brk)
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