Initial piece of unified syscall support from Brecis Communications

1 files changed, 45 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/mips/__uClibc_syscall.S b/libc/sysdeps/linux/mips/__uClibc_syscall.S
new file mode 100644
index 000000000..9993976d4
--- /dev/null
+++ b/libc/sysdeps/linux/mips/__uClibc_syscall.S
@@ -0,0 +1,45 @@
+/*
+ * $Id: __uClibc_syscall.S,v 1.1 2002/08/09 13:43:21 andersen Exp $
+ *
+ * __uClibc_syscall.S - MIPS version.
+ *
+ * Derived from x86 implementation to reduce memory footprint
+ * for syscalls.
+ *
+ * Mark Rustad, 03/21/2002
+ * Copyright 2002 BRECIS Communications Corp.
+ *
+ * uClibc 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 uClibc; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA.
+ */
+
+ #include <sys/regdef.h>
+
+	.text
+	.align  4
+	.globl  __uClibc_syscall
+	.ent    __uClibc_syscall,0
+	.type   __uClibc_syscall,@function
+__uClibc_syscall:
+	syscall
+	.set    noreorder
+	beqz    a3, 1f
+	lui     t3, %hi(errno)
+	.set    reorder
+	negu    a1, v0
+	sw      a1, %lo(errno)(t3)
+	li      v0, -1
+1:
+	j       ra
+	.end    __uClibc_syscall
+
+.Lsize:
+	.size   __uClibc_syscall,.Lsize-__uClibc_syscall
+