Add implementation of Fib in ASM.

A-ee · web-flow · commit cf2669e0ab0f · 2020-03-30T21:15:10.000+08:00
diff --git a/fib.S b/fib.S
@@ -0,0 +1,32 @@
+        .intel_syntax noprefix
+        .global    main
+        .extern    printf
+
+        .text
+main:
+        push      rdi
+        mov       r12, 0
+        mov       r13, 1
+        mov       r14, 0
+
+loop:
+        lea       rdi, formatstr
+        mov       rsi, r12
+        call      printf
+
+        lea       rdi, formatstr
+        mov       rsi, r13
+        call      printf
+
+        lea       r12, [r12+r13]
+        lea       r13, [r12+r13]
+
+        inc       r14
+        cmp       r14, 1000001
+        jle       loop
+
+        pop       rdi
+        ret
+
+formatstr:
+        .asciz    "%llu\n"
