about summary refs log tree commit diff
path: root/sysdeps/unix/bsd/sun/m68k/brk.S
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/unix/bsd/sun/m68k/brk.S')
-rw-r--r--sysdeps/unix/bsd/sun/m68k/brk.S49
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/unix/bsd/sun/m68k/brk.S b/sysdeps/unix/bsd/sun/m68k/brk.S
new file mode 100644
index 0000000000..114fa73c85
--- /dev/null
+++ b/sysdeps/unix/bsd/sun/m68k/brk.S
@@ -0,0 +1,49 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <sysdep.h>
+
+#ifndef	SYS_brk
+#define	SYS_brk	17
+#endif
+
+#ifndef	HAVE_GNU_LD
+#define	__end	_end
+#endif
+
+.data
+.globl ___curbrk
+___curbrk:
+	.long __end
+
+.text
+ENTRY (__brk)
+	movel __end, d0
+	cmpl sp@(4), d0
+	ble 0f
+	movel d0, sp@(4)
+0:	pea SYS_brk
+	trap #0
+	bcs 1f
+	movel sp@(4), ___curbrk
+	clrl d0
+	rts
+1:
+	jmp syscall_error
+
+weak_alias (__brk, brk)