initial import

1 files changed, 67 insertions, 0 deletions

diff --git a/sysdeps/unix/mips/brk.S b/sysdeps/unix/mips/brk.S
new file mode 100644
index 0000000000..1754c0c4de
--- /dev/null
+++ b/sysdeps/unix/mips/brk.S
@@ -0,0 +1,67 @@
+/* Copyright (C) 1992, 1995 Free Software Foundation, Inc.
+   Contributed by Brendan Kehoe (brendan@zen.org).
+
+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
+.sdata
+ENTRY(__curbrk)
+	.word __end
+
+.text
+.set noreorder
+.set noat
+
+ENTRY(__brk)
+	/* Minimum is one page.  */
+	lui v0, 4096
+	lw v0, __end
+	nop
+
+	/* If they ask for less than a page, givvem the whole
+	   thing anyway.  */
+	sltu AT, a0, v0
+	beq AT, zero, down1
+	nop
+	move a0, v0
+down1:
+	li v0, SYS_brk
+	syscall
+	bne a3, zero, error
+
+	/* Update __curbrk and exit cleanly.  */
+	lui AT, 4096
+	sw a0, __curbrk
+	j ra
+	move v0, zero
+
+	/* What a horrible way to die.  */
+error:	j syscall_error
+	nop
+	nop
+	nop
+
+weak_alias (__brk, brk)