Add call pseudo instruction

1 files changed, 29 insertions, 0 deletions

diff --git a/tools/builtin.s b/tools/builtin.s
new file mode 100644
index 0000000..6fc43f6
--- /dev/null
+++ b/tools/builtin.s
@@ -0,0 +1,29 @@
+.global printi
+.type printi, @function
+
+.text
+printi:
+    addi sp, sp, -8
+    sw s0, 0(sp)
+    sw ra, 4(sp)
+    addi s0, sp, 8
+
+    addi t0, a0, 0
+    addi a0, a0, '0'
+    sw a0, 0(s0)
+    addi a0, x0, 1
+    addi a1, s0, 0
+    addi a2, x0, 1
+    addi a7, x0, 64
+    ecall
+
+    addi t1, x0, '\n'
+    sw t1, 0(s0)
+    ecall
+
+    addi a0, t0, 0
+
+    lw s0, 0(sp)
+    lw ra, 4(sp)
+    addi sp, sp, 8
+    ret