1 files changed, 28 insertions, 0 deletions
diff --git a/src/u_print.S b/src/u_print.S
new file mode 100644
index 0000000..3866868
--- /dev/null
+++ b/src/u_print.S
@@ -0,0 +1,28 @@
+.text
+.extern	u_strlen
+.globl	u_pout
+.globl	u_perr
+
+u_pout:
+	movq	$0x1, %r11	# stdout
+	jmp		u_print
+
+u_perr:
+	movq	$0x2, %r11	# stderr
+	jmp		u_print
+
+u_print:
+	callq	u_strlen
+	movq	%rax, %rdx
+	movq	%rdi, %rsi
+	movq	%r11, %rdi
+	movq	$0x4, %rax	# SYS_write
+	syscall
+	leaq	nl, %rsi
+	movq	$0x1, %rdx
+	movq	$0x4, %rax	# SYS_write
+	syscall
+	retq
+
+.data
+nl: .asciz "\n"