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04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* brk system call for Linux/i386.
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Copyright (C) 1995-2019 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, see
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<http://www.gnu.org/licenses/>. */
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#if BUILD_PIE_DEFAULT
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/* Can't use "call *%gs:SYSINFO_OFFSET" during statup in static PIE. */
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# define I386_USE_SYSENTER 0
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#endif
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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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/* 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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INTERNAL_SYSCALL_DECL (err);
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void *newbrk = (void *) INTERNAL_SYSCALL (brk, err, 1, addr);
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__curbrk = newbrk;
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if (newbrk < addr)
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return INLINE_SYSCALL_ERROR_RETURN_VALUE (ENOMEM);
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return 0;
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}
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weak_alias (__brk, brk)
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