489b7d4bfc
1998-03-01 09:11 Richard Henderson <rth@cygnus.com> * sysdeps/unix/sysv/linux/sparc/bits/ioctls.h: Don't include kernel_termios.h. * sysdeps/unix/sysv/linux/sparc/bits/termios.h (CBAUD, CIBAUD): Fix. Clean up random whitespace. * sysdeps/unix/sysv/linux/sparc/sparc32/brk.c: Tidy the asm. * sysdeps/unix/sysv/linux/sparc/sparc32/socket.S: Use std on the args. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.S: Fix use of .bss. * sysdeps/unix/sysv/linux/sparc/sparc32/sys/ucontext.h: New file. 1998-03-01 08:31 Richard Henderson <rth@cygnus.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* brk system call for Linux/SPARC.
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Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx)
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 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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/* 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 *newbrk, *scratch;
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{
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register void *o0 __asm__("%o0") = addr;
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register int g1 __asm__("%g1") = __NR_brk;
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__asm ("t 0x10" : "=r"(o0) : "r"(g1), "0"(o0) : "cc");
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newbrk = o0;
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}
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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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