1 files changed, 69 insertions, 0 deletions
diff --git a/libc/arch-sh/bionic/syscall.S b/libc/arch-sh/bionic/syscall.S
new file mode 100644
index 0000000..7e9f307
--- /dev/null
+++ b/libc/arch-sh/bionic/syscall.S
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/linux-syscalls.h>
+
+.text
+.type syscall, @function
+.globl syscall
+.align 4
+
+/*
+ * Current implementation assumes that the all syscall
+ * has maximum 7 arguments.
+ */
+syscall:
+    /* get args */
+    mov     r4, r3      /* system call number */
+    mov     r5, r4
+    mov     r6, r5
+    mov     r7, r6
+    mov.l   @r15, r7
+    mov.l   @(4, r15), r0
+    mov.l   @(8, r15), r1
+    mov.l   @(12, r15), r2
+
+    /* invoke trap */
+    trapa   #(7 + 0x10) /* assuming 7 arguments */
+
+    /* check return value */
+    cmp/pz  r0
+    bt      end
+
+    /* keep error number */
+    mov.l   r0, @-r15
+    mov.l   0f, r1
+    jsr     @r1
+    mov     r0, r4
+    mov.l   @r15+, r0
+
+end:
+    rts
+    nop
+
+    .align  2
+0:  .long   __set_errno