1 files changed, 35 insertions, 0 deletions
diff --git a/usr/klibc/arch/sh/pipe.S b/usr/klibc/arch/sh/pipe.S
new file mode 100644
index 0000000..01b055b
--- /dev/null
+++ b/usr/klibc/arch/sh/pipe.S
@@ -0,0 +1,35 @@
+/*
+ * arch/sh/pipe.S
+ *
+ * The pipe system call is special on sh: it returns
+ * the two file descriptors in r0 and r1.
+ */
+
+#include <asm/unistd.h>
+
+	.section ".text.syscall","ax"
+	.align	2
+	.globl	pipe
+	.type	pipe,@function
+pipe:
+	mov	#__NR_pipe, r3
+	trapa	#0x10
+	mov.l	1f,r2
+	cmp/hs	r0,r2
+	bt/s	3f
+	  neg	r0,r2
+	mov.l	2f,r3
+	mov.l	r2,@r3
+	rts
+	  mov	#-1,r0
+3:
+	mov.l   r0, @r4
+	mov.l   r1, @(4, r4)
+	rts
+	  mov	#0,r0
+
+	.align 2
+1:	.long	-4096		/* Errno limit */
+2:	.long	errno
+
+	.size	pipe,.-pipe