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Diffstat (limited to 'libc/sysdeps/linux/xtensa/brk.c')
-rw-r--r--libc/sysdeps/linux/xtensa/brk.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/xtensa/brk.c b/libc/sysdeps/linux/xtensa/brk.c
new file mode 100644
index 000000000..51f610b70
--- /dev/null
+++ b/libc/sysdeps/linux/xtensa/brk.c
@@ -0,0 +1,43 @@
+/* brk system call for Linux/Xtensa.
+ Copyright (C) 1996, 1997, 2005, 2007 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+/* This must be initialized data because commons can't have aliases. */
+void *__curbrk attribute_hidden = 0;
+
+libc_hidden_proto(brk)
+int
+brk (void *addr)
+{
+ void *newbrk;
+
+ __curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
+
+ if (newbrk < addr)
+ {
+ __set_errno (ENOMEM);
+ return -1;
+ }
+
+ return 0;
+}
+libc_hidden_def(brk)