1 files changed, 35 insertions, 0 deletions
diff --git a/usr/klibc/arch/sh/syscall.S b/usr/klibc/arch/sh/syscall.S
new file mode 100644
index 0000000..77245b7
--- /dev/null
+++ b/usr/klibc/arch/sh/syscall.S
@@ -0,0 +1,35 @@
+/*
+ * arch/sh/syscall.S
+ *
+ * On sh, r3 contains the syscall number (set by generated stub);
+ * r4..r7 contain arguments 0-3 per the standard calling convention,
+ * and arguments 4-5 are passed in r0 and r1.
+ *
+ * The return value is in r0.
+ */
+
+	.section ".text.syscall","ax"
+	.align	2
+	.globl	__syscall_common
+	.type	__syscall_common,@function
+__syscall_common:
+	mov.l	@(0,sp),r0
+	mov.l	@(4,sp),r1
+	trapa	#0x15
+	mov.l	1f,r1
+	cmp/hs	r0,r1
+	bt/s	3f
+	  neg	r0,r1
+	mov.l	2f,r2
+	mov.l	r1,@r2
+	rts
+	  mov	#-1,r0
+3:
+	rts
+	  nop
+
+	.align 2
+1:	.long	-4096		/* Errno limit */
+2:	.long	errno
+
+	.size	__syscall_common,.-__syscall_common