1 /* Copyright (C) 1997, 2008 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 /* __brk is a special syscall under Linux since it never returns an
21 error. Instead, the error condition is indicated by returning the old
22 break value (instead of the new, requested one). */
26 #include <bits/errno.h>
33 .type __curbrk,@object
36 .common __curbrk, 8, 8
42 cfi_def_cfa_register(%fp)
44 cfi_register(%o7, %i7)
47 sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7
48 2: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7
57 /* All the ways we can fail... */
65 /* Update __curbrk and return cleanly. */
66 .Lok: sethi %hi(__curbrk), %g1
67 or %g1, %lo(__curbrk), %g1
74 /* Don't use "ret" cause the preprocessor will eat it. */
78 /* What a horrible way to die. */
79 .Lerr0: set ENOMEM, %o0
81 #ifndef _LIBC_REENTRANT
83 or %g1, %lo(errno), %g1
90 call HIDDEN_JUMPTARGET(__errno_location)
102 weak_alias (__brk, brk)